General Notes on Data 

1

._ (A) Long title ls given first, followed bv was assigned). ., s-hort title (when one 

(B) The total quantity may have been procured under one or more contracts. · · 

·cc) Where two or mor_e contracts were involved, the unit co·st is the 

.average of unit costs of the separate contracts. 

(D) Bollow1ng key numbers signify following p~oduc1ng or manufacturint; f!;gencies. "\, .... 

l. Signal Corps Laboratories, Fort Monmouth,•· J. 

2. Wallace and Tiernan Products, Inc., Belleville, N. J. 

3. Teletype Corporation, Chicago, Illinois. 

4. L. C. Smith-Corona Typewriter Co., Syracuse, New York. 

5. Fournier Institute, Chicago, ·Illinois. 

(E} Only such technical literature and/or manuals as contain information describing the equipment are included. • 

(F) Under "Patent Status" are given only data relative to any patents 

or patent applic,tions filed by u. s. employees covering the specific item or applicable to specific features thereof. 

Special notes on· the items listed 

(1) Item 1 was purely an experimental model and was never put into 

service; aa.a.ilable in ASA museum. Cost of development unknown but 

might be obtained from old records of Signal Corps Laboratories. 

(2) The two ma.chines constituting Item 2 were pilot models for Item 

3; av_ailable in ASA museum. Cost or development unknown but might be obtained from old records of Signal Corps Laboratories. 

(3) These,ma.chines were delivered in August 1938 and-were in service 

until superseded by Item 7; then destroyed except for one is ASA 

museum. 

(4) These ma.chines incorporated some minor modifications in Item 3. 

•ight ma.chi:ae·s were purchased from the War Department by the. State 

Department. All 56 machines were in service for several years. 

(5) This served as pilot model for Item 6; aaailable in ASA museum. 

( 6) Keying Unl t M-229 replt1.ced the Key-tape transmitter of Iteps 3 

and 4 and served as controlling element for stepping the rotors. 

(7) This ma.chine constituted the principal one used by A!'m.Y and Navy for intra and inter-service high and medium-echelon classified 

communicatton.s. Preliminary models and pre-production models developed by Teletype Corp.; available in Navy museum. . It is believed 

that certain pa~ent applications have been filed by u. s. Navy per- sonne~ to cover_ certain special features of this equipment. 

(8) Thes-e were experimental models constructed in an attempt to 

produce a smaller a.•d lighter version of Converter M-134-C; available in ASA museum. 

Declassified and approved for release by NSA on 11-14-2013 pursuant to E .0. 1352a 

SECRET ... I 
~D:A273732 

(9) These special cipher units were purchased from the Navy. They 

made Converter M-134-C (Item No. 7) utilizable for combined communications (with British only) as one version of a cryptographic 

machine designated as the CCM (Combined Cipher Machine). 

(10) These were development models for Item No. 11. 

(11) These machines were employed for on-line and off-line teletype 

and radioteletype communications; machines available in ASA museum. 

(12) Development model, followed by an additional development model 

before standardizing; available in ASA museum. 

(13) These were delivered too late to be employed during actual 

hostilities; now in storage. A few were used in service tests. 

(14) Development model, followed by an additional development model 

before standardizing, available in ASA museum. 

(15) The State Department received 1000 of these machines, put a 

number of them into service for a short period. The Army used them 

briefly in service tests but the machine was never used extensively 

because of poor performance. 

(16) Developmental model; available in ASA museum. 

(17) This item was the one forming the subject matter of Project C-52, 

Contra.ct OEMsr-542, of Office of Scientific Research and Development, 

National Defense Research Council, Division 13, NDRC, Washington, l'.146, pp 120--22. Developmental work done by Fournier Institute at 

no cost to the Government. 

(18) Rotors of several types were made. The type used with items 2, 

3, and 4 were Enigma Style, not reversible or invertible; other rotors 

were all of invertible type. 

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REF ID:A273732 

I . ~ ' I (See Note A) (See Note B) (See Note C) (See Note D) (See Note E) (See Note F) I Item Nomenclature Total Unit Cost Prod. Agencr Technical Patent 

No. or Quantity or Literature Status 

Designation Procured Manufacturer 

1. Converter M-134-T-l l Unknown l Exhibit No. l U.S.Patent 

#2,028,772, 

issued 28 Jan 36 

2. Converter M-134-T-2 2 Unknown 1 Exhibits Nos. U.S. Patent 

2 and 3 Application 

#682, 096,, filed 

25 July 33; in 

secrecy status 

3. Converter M-134 (SIGH~C) 

12 $2,135. 2 E.xhibi t No. 4 See Item 1/2 

4. Converter M-134-A 56 $2,400. 2 Exhibits Nos. See Item #2 

(SIGMYC) 5 and 6 

5. Keying Unit M-229 1 $2,955. 1 None Basic principles covered by appl1-

cation under Item 

7 

6. Keying Unit M-229 75 $500. 2 Exhibit No. 7 See Item #5 

(SIGGOO) 

7. . Converter M-134-C 3,330 $1,567. 3 Exhibit No • 8 U .s. Patent 

(SIGABA) Application 

#70,412, filed .. 23 March 36; in 

secrecy status. 

(Some have been 

filed by Navy) 

8. Convertvr M-161-C 2· $12,132. 3 Exhibit No. 9 Covered under 

'·' Item #7 .. ·- __ ,.,,,eel 

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REF ID:A273732 

Nomenclature Total Producing Item or Quantity Unit Agency or Technical Patent 

No. Designation (l) Procedured 2) Cost (3) Ma~u:f'acturer Literature 4) Status 

Sec Note A See Note B See Note c See Note D See Note E See Note F 

... 18. Rotors 

a. ABA tjpe 431,500 $6.66 3 None None 

b. NIN type 8,000 $13.80 3 None Unlmown 

c. FOY type 192,000 $6.00 4 None Unlmown 

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