PORTLAND BREWING CO /OR/
SC 13D, 1998-09-03
MALT BEVERAGES
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934


                            PORTLAND BREWING COMPANY
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                   736 420 100
                                 (CUSIP Number)

                             John D. Guinasso, Esq.
                           Schwabe, Williamson & Wyatt
                     1211 SW Fifth Avenue, Suites 1600-1800
                           Portland, Oregon 97204-3795
                                  503-222-9981
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 August 26, 1998
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box. [ ]

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits.  See ss.240.13d-7 for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
 to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB control number.

<PAGE>

CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.   Names of Reporting Persons.
     I.R.S. Identification Nos. of above persons (entities only)

         Harmer Mill & Logging Supply Co.  EIN 93-0401358
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

             (a) X
                ----------------------------------------------------------------
             (b)
                ----------------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.       Sole Voting Power          765,162
Shares Beneficially        -----------------------------------------------------
Owned by                   8.       Shared Voting Power      1,107,784.5
Each Reporting             -----------------------------------------------------
Person With                9.       Sole Dispositive Power     765,162
                           -----------------------------------------------------
                           10.      Shared Dispositive Power 1,107,784.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
     Instructions)
- --------------------------------------------------------------------------------

13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  CO
- --------------------------------------------------------------------------------
                                       2
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Harco Products, Inc.  EIN 93-0323617
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power            30,000
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power       1,842,946.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power       30,000
                           -----------------------------------------------------
                           10.  Shared Dispositive Power 1,842,946.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person  1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  CO
- --------------------------------------------------------------------------------
                                       3
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Black Lake Investments  EIN 93-1036865
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power            73,335
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power       1,799,611.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power       73,335
                           -----------------------------------------------------
                           10.  Shared Dispositive Power 1,799,611.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  PN
- --------------------------------------------------------------------------------
                                       4
<PAGE>

CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         MacTarnahan Limited Partnership  EIN 93-1133339
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power            43,848.75
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power       1,829,097.75
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power       43,848.75
                           -----------------------------------------------------
                           10. Shared Dispositive Power  1,829,097.75
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  PN
- --------------------------------------------------------------------------------
                                       5
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Robert Malcolm MacTarnahan
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
Number of                  7.  Sole Voting Power             28,860
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power        1,844,086.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power        28,860
                           -----------------------------------------------------
                           10.  Shared Dispositive Power  1,844,086.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  IN
- --------------------------------------------------------------------------------
                                       6
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Robert Scott MacTarnahan
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
Number of                  7.  Sole Voting Power             6,000
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power       1,866,946.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power        6,000
                           -----------------------------------------------------
                           10.  Shared Dispositive Power 1,866,946.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  IN
- --------------------------------------------------------------------------------
                                       7
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Electra Partners, Inc.  EIN 93-0844341
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power             180,300
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power         1,692,646.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power        180,300
                           -----------------------------------------------------
                           10.  Shared Dispositive Power   1,692,646.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  CO
- --------------------------------------------------------------------------------
                                       8
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.  Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Charles A. Adams Family Trust  EIN ###-##-####
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    Oregon, United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power             666,192
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power         1,206,754.5
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power        666,192
                           -----------------------------------------------------
                           10.  Shared Dispositive Power   1,206,754.5
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  OO
- --------------------------------------------------------------------------------
                                       9
<PAGE>


CUSIP No.  736 420 100
- --------------------------------------------------------------------------------
1.   Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only)

         Charles Anthony Adams
- --------------------------------------------------------------------------------
2.  Check the Appropriate Box if a Member of a Group (See Instructions)

                  (a)  X
                     -----------------------------------------------------------
                  (b)
                     -----------------------------------------------------------
- --------------------------------------------------------------------------------
3.  SEC Use Only
- --------------------------------------------------------------------------------
4.  Source of Funds (See Instructions)  OO
- --------------------------------------------------------------------------------
5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) 
    or 2(e)
- --------------------------------------------------------------------------------
6.  Citizenship or Place of Organization    United States of America
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Number of                  7.  Sole Voting Power              77,598.75
Shares Beneficially        -----------------------------------------------------
Owned by                   8.  Shared Voting Power         1,795,347.75
Each Reporting             -----------------------------------------------------
Person With                9.  Sole Dispositive Power         77,598.75
                           -----------------------------------------------------
                           10.  Shared Dispositive Power   1,795,347.75
- --------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially Owned by Each Reporting Person   1,872,946.5
- --------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions)
- --------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)   53.5%
- --------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)
                  IN
- --------------------------------------------------------------------------------
                                       10
<PAGE>

Item 1. Security and Issuer

         This statement relates to the common stock, no par value ("Common
Stock"), of Portland Brewing Company (the "Company"). The address of the
principal executive offices of the Company is 2730 NW 31st Avenue, Portland,
Oregon 97210.

Item 2. Identity and Background

         (a) - (f)

         This statement is being filed on behalf of a group consisting of the
following nine reporting persons (each a "Reporting Person" and collectively,
the "Reporting Persons"):

         1) Harmer Mill & Logging Supply Co. 
            -------------------------------  Harmer Mill & Logging Supply Co.
("Harmer") is an Oregon corporation with its principal office located at 11416
SW Lynnridge, Portland, Oregon 97225. Harmer's principal business is real estate
investment. Robert Malcolm MacTarnahan is a director and President of Harmer and
Robert Scott MacTarnahan is a director and Vice President of Harmer. Ruth A.
MacTarnahan, 11416 SW Lynnridge, Portland, Oregon 97225 (business address), is a
director of Harmer. Andrea J. MacTarnahan, 11416 SW Lynnridge, Portland, Oregon
97225 (business address), is a director and employee of Harmer. Sarah A.
Whitworth, 11416 SW Lynnridge, Portland, Oregon 97225 (business address), is a
director of Harmer and is employed by Harco (defined below). Each of Ruth A.
MacTarnahan, Andrea J. MacTarnahan and Sara A. Whitworth are citizens of the
United States of America.

         2) Harco Products, Inc. 
            -------------------  Harco Products, Inc. ("Harco") is an Oregon
corporation with its principal office located at 11416 SW Lynnridge, Portland,
Oregon 97225. Harco's principal business is the manufacturing of aluminum hand
trucks and carts. Robert Malcolm MacTarnahan is a director and President of
Harco and Robert Scott MacTarnahan is a director and Vice President of Harco.
Ruth A. MacTarnahan, Andrea J. MacTarnahan and Sarah A.
Whitworth are each directors of Harco.

         3) Black Lake Investments. 
            ----------------------  Black Lake Investments ("Black Lake") is a
general partnership formed under the laws of the State of Oregon with its
principal office located at 11416 SW Lynnridge, Portland, Oregon 97225. The
principal business of Black Lake is to invest in the Common Stock of the
Company. Robert Malcolm MacTarnahan and Robert Scott MacTarnahan are the general
partners of Black Lake.

         4) MacTarnahan Limited Partnership. 
            -------------------------------  MacTarnahan Limited Partnership is
an Oregon limited partnership with its principal office located at 11416 SW
Lynnridge, Portland, Oregon 97225. The principal business of the MacTarnahan
Limited Partnership is investments. The general partner is Harmer and the
limited partners are Robert Malcolm MacTarnahan and Ruth A. MacTarnahan.

         5) Robert Malcolm MacTarnahan. 
            --------------------------  Robert Malcolm MacTarnahan's business
address is 11416 SW Lynnridge, Portland, Oregon 97225. Robert Malcolm
MacTarnahan is a director of the Company and is a director and President of 
Harmer and Harco. Robert Malcolm MacTarnahan is a citizen of the United States 
of America.

         6) Robert Scott MacTarnahan. 
            ------------------------  Robert Scott MacTarnahan's business
address is 11416 SW Lynnridge, Portland, Oregon 97225. Robert Scott MacTarnahan
is a director of the Company and is a 

                                       11
<PAGE>

director and Vice President of Harmer and Harco. Robert Scott MacTarnahan is a 
citizen of the United States of America.

         7) Electra Partners, Inc. 
            ---------------------  Electra Partners, Inc. ("Electra") is an
Oregon corporation with its principal office located at 17675 Farmington Road,
Aloha, Oregon 97007-3216 Electra's principal business is owning and operating a
landfill. Charles Anthony Adams is a director and President of Electra. Each of
Peter Francis Adams, 3011 SW Nottingham Drive, Portland, Oregon 97201, and Carol
Crampton Adams, 3011 SW Nottingham Drive, Portland, Oregon 97201, is a Vice
President and director of Electra. Peter Francis Adams and Carol Crampton Adams
are citizens of the United States of America.

         8) Adams Family Trust. 
            ------------------  Adams Family Trust ("Trust") is a trust formed
under the laws of the State of Oregon with its principal office located at 1539
SW Elizabeth Ct., Portland, Oregon 97201. The trustee of the Trust is Charles A.
Adams and the principal business of the Trust is to hold and manage investments
for its beneficiaries.

         9) Charles Anthony Adams. 
            ---------------------  Charles Anthony Adams' business address is
2730 NW 31st Avenue, Portland, Oregon 97210. Mr. Adams is a director and
President of the Company and is a director and President of Electra.
Mr. Adams is a citizen of the United States of America.

         No Reporting Person or other person identified above or in Item 5(b)
has, during the last five years, been convicted in a criminal proceeding
(excluding traffic violations and misdemeanors). No Reporting Person or other
person identified above or in Item 5(b) has been a party to a civil proceeding
of a judicial or administrative body of competent jurisdiction as a result of
which any Reporting Person or other person identified above or in Item 5(b) has
been subject to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or state
securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration

         The acquisition of Common Stock to which this statement relates was
made in connection with a restructuring of the Company's outstanding debt. This
statement relates to the acquisition of 645,162 shares of Common Stock by each
of Harmer and the Trust in exchange for the cancellation by each of Harmer and
the Trust of a 10% Amortizing Subordinated Note (the two notes are referred to
collectively as the "Notes"), Due June 1, 2002, in the principal sum of
$200,000. The Company was the maker of the Notes and the Notes were secured by
accounts receivable and inventory of the Company.

         In addition to the conversion of the Notes to Common Stock, the
MacTarnahan Limited Partnership purchased approximately $3.5 million of secured
Company debt held by Bank of America, NT&SA ("Debt"). In connection with the
purchase of the Debt, Electra and the Trust entered into a letter voting
agreement with Robert Malcolm MacTarnahan and Robert Scott MacTarnahan pursuant
to which Electra and the Trust agreed to vote their 846,492 shares of Common
Stock at the direction of Robert Malcolm MacTarnahan and Robert Scott
MacTarnahan prior to or at the 1998 Annual Meeting of Shareholders.

         Because of the transactions described above and the relationships
between the parties, Robert Malcolm MacTarnahan, Robert Scott MacTarnahan,
Charles Anthony Adams, Harmer, Harco, Black Lake, the MacTarnahan Limited
Partnership, Electra and the Trust (the "Group") are a "group" within the
meaning of Rule 13d-5.

                                       12
<PAGE>

Item 4. Purpose of the Transaction

         The Common Stock to which this statement relates was acquired for
investment purposes and for purposes of obtaining control of the Company.
Control of the Company was a prerequisite to the Group entering into the
transactions described in Item 3 above.

         The MacTarnahan Limited Partnership is currently negotiating with the
Company with respect to the possible conversion of a portion of the Debt into
Common Stock of the Company. No commitment or agreement has been reached at this
time.

         There are no other current plans or proposals which would relate to or
result in any transaction described in items (a) through (j) of the instructions
to Item 4 of Schedule 13D.

Item 5.  Interests in Securities of the Issuer

         (a) Pursuant to Rule 13d-5(b)(1), each member of the Group is deemed to
be the beneficial owner of 1,872,946.5 shares of Common Stock, 133,447.5 of
which shares are beneficially owned as members of the Group have the right to
acquire such shares pursuant to options or warrants. The shares of Common Stock
beneficially owned by the Group represent 53.5% of the outstanding Common Stock
of the Company.

         (b) The members of the Group together have the sole power to vote and
the sole power dispose of 1,871,296.5 shares of Common Stock. The Group shares
the power to vote and the power to dispose of 1,650 shares of Common Stock, 600
shares of which are owned by Jean R. MacTarnahan (Robert Scott MacTarnahan's
spouse) and 1,050 shares of which are owned by Charles Francis Adams III and
Katherine Maxwell Adams (Charles Anthony Adams' children). Jean R. MacTarnahan
is a citizen of the United States of America and her business address is 11416
SW Lynnridge, Portland, Oregon 97225. Each of Charles Francis Adams III and
Katherine Maxwell Adams is a citizen of the United States of America and their
residential address is 1401 SW Spring Garden Road, Portland, Oregon 97219.

     See Items 7-10 on each of the cover pages to this Schedule 13d for specific
information as to the voting and dispositive power of each of the Reporting 
Persons.

         (c) Harmer and the Trust each acquired 645,162 shares of Common Stock
directly from the Company on August 25, 1998 pursuant to the conversion of the
Notes as described in Item 3 above. The purchase price was based on a conversion
ratio of approximately $.31 per share.

         (d) Not applicable.

         (e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
Securities of the Issuer

         Electra and the Trust entered into a letter voting agreement with
Robert Malcolm MacTarnahan and Robert Scott MacTarnahan pursuant to which
Electra and the Trust agreed to vote their 846,492 shares of Common Stock at the
direction of Robert Malcolm MacTarnahan and Robert Scott MacTarnahan prior to or
at the 1998 Annual Meeting of Shareholders.

                                       13
<PAGE>

Item 7. Material to Be Filed as Exhibits

         1) Letter agreement dated August 26, 1998, among Electra, the Trust,
Robert Malcolm MacTarnahan and Robert Scott MacTarnahan.

         2) Joint Filing Agreement dated August 31, 1998.


                                       14
<PAGE>

                                    Signature

         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.



                                           Harmer Mill & Logging Supply Co.

                                           By: /s/ Robert Scott MacTarnahan
                                               ---------------------------------
/s/ Robert Malcolm MacTarnahan                 Robert Scott MacTarnahan, Vice
- -----------------------------                  President
Robert Malcolm MacTarnahan  

                                           Harco Products, Inc.

                                           By: /s/ Robert Scott MacTarnahan
                                               ---------------------------------
 /s/ Robert Scott MacTarnahan                  Robert Scott MacTarnahan, Vice
- -------------------------                  President
Robert Scott MacTarnahan

                                           Black Lake Investments

                                           By: /s/ Robert Malcolm MacTarnahan
                                              ----------------------------------
                                              Robert Malcolm MacTarnahan,Partner

 /s/ Charles Anthony Adams                 By:/s/ Robert Scott MacTarnahan
- -----------------------------                 ----------------------------------
Charles Anthony Adams                         Robert Scott MacTarnahan, Partner

                                           MacTarnahan Limited Partnership

                                           By:  Harmer Mill & Logging Supply Co.

                                              By: /s/ Robert Scott MacTarnahan
                                                  ------------------------------
                                                  Robert Scott MacTarnahan, Vice
                                                  President

                                           Electra Partners, Inc.

                                           By: /s/ Charles Anthony Adams
                                               ---------------------------------
                                               Charles Anthony Adams, President

                                           Charles A. Adams Family Trust

                                           By: /s/ Charles Anthony Adams
                                               ---------------------------------
                                               Charles Anthony Adams, Trustee

                                       15


VIA TELEFAX

August 17, 1998

Mr. R. M. MacTarnahan
Mr. R. Scott MacTarnahan
Honeyman Aluminum Products Co.
4670 SW Pacific St.
Beaverton, OR 97006

Dear Mac and Scott:

We all appreciate greatly your efforts and commitment for the company.  I want 
to assure you we all are on the same page going forward, so I propose that you 
accept this letter as my agreement to vote the Portland Brewing Company shares
held by Electra Partners, Inc., and the Adams Family Trust at your direction 
prior to or at the annual meeting to ensure that your loan purchase from the 
Bank of America results in the level of control you desire.  I will also sign 
the proxy on behalf of Electra and the Adams Family Trust when it arrives to 
confirm this agreement.

If the above is acceptable, please indicate your acceptance by signing below.

Thank you again.

Very truly yours,

/s/ Charles A. Adams
Charles A. Adams

Accepted and Agreed:

/s/ R.M. MacTarnahan
- ------------------------
R.M. MacTarnahan         Dated:  August 26, 1998


/s/ R. Scott MacTarnahan
- ------------------------
R. Scott MacTarnahan     Dated:  August 26, 1998



                             JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934,
as amended, each of the person named below agrees to the joint filing of a 
Statement on Schedule 13D (including amendments thereto) with respect to the 
common stock of Portland Brewing Company, an Oregon corporation, and further 
agrees that this Joint Filing Agreement be included as an exhibit to such 
filings provided that, as contemplated by Section 13d-1(k)(l)(ii), no person 
shall be responsible for the completeness or accuracy of the information 
concerning the other persons making the filing, unless such person knows or has 
reason to believe that such information is inaccurate.  This Joint Filing 
Agreement may be executed in any number of counterparts, all of which together
shall constitute one and the same instrument.

1 - JOINT FILING AGREEMENT

<PAGE>

DATED:  August 31, 1998.

                                           Harmer Mill & Logging Supply Co.

                                           By: /s/ Robert Scott MacTarnahan
                                               ---------------------------------
/s/ Robert Malcolm MacTarnahan                 Robert Scott MacTarnahan, Vice
- -----------------------------                  President
Robert Malcolm MacTarnahan  

                                           Harco Products, Inc.

                                           By: /s/ Robert Scott MacTarnahan
                                               ---------------------------------
 /s/ Robert Scott MacTarnahan                  Robert Scott MacTarnahan, Vice
- -------------------------                  President
Robert Scott MacTarnahan

                                           Black Lake Investments

                                           By: /s/ Robert Malcolm MacTarnahan
                                              ----------------------------------
                                              Robert Malcolm MacTarnahan,Partner

 /s/ Charles Anthony Adams                 By:/s/ Robert Scott MacTarnahan
- -----------------------------                 ----------------------------------
Charles Anthony Adams                         Robert Scott MacTarnahan, Partner

                                           MacTarnahan Limited Partnership

                                           By:  Harmer Mill & Logging Supply Co.

                                              By: /s/ Robert Scott MacTarnahan
                                                  ------------------------------
                                                  Robert Scott MacTarnahan, Vice
                                                  President

                                           Electra Partners, Inc.

                                           By: /s/ Charles Anthony Adams
                                               ---------------------------------
                                               Charles Anthony Adams, President

                                           Charles A. Adams Family Trust

                                           By: /s/ Charles Anthony Adams
                                               ---------------------------------
                                               Charles Anthony Adams, Trustee


2 - JOINT FILING AGREEMENT


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