ENGINEERING INSPECTION REPORT - (SANITIZED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A000400060007-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 1
• Document Creation Date: December 23, 2016
• Document Release Date: March 5, 2014
• Sequence Number: 7
• Publication Date: October 24, 1952
• Content Type: MEMO

Declassified in Part - Sanitized Copy Approved for Release 2014/03/05: CIA-RDP78-03424A000400060007-6
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24 October 1952
: Contract
Task 1
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MEMORANDUM FOR lab FILES
FROM
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SUBJECT
: Engineering Inspection
Report -
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1. A visit was made
to the plant of the
Contractor
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on 15 and 16 of
October for the purpose
of monitoring the
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progress on the subject contract. The following persons were present
and took part in the discussion:
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2. The most important development on this project is the contractor's
decision to replace the spring power drive with a small D. C. motor. This
change has resulted in a small size and weight reduction of the unit. The
motor is manufactured by the A. W. Hayden Company and provides constant
torque output due to. the incorporation of a Geneva Escapement device. The
power requirements for this device are quite low, being in the order of 6
volts D. C. at 100 milliamperes. The D. C. is obtained by rectifying the
output of a 6.3 volt transformer winding. The incorporation of this motor
provides better performahce of the unit from the standpoint that any given
recorded message may be played over and over without having to rewind a
spring drive element.
3. A power potentiometer and tap switch has been added to the unit to
allow operation over an input voltage range of 70-270 volts A. C. A neon
voltage indicator will be used to indicate' when the proper voltage is being
applied to the unit. There is no provision for automatic voltage regulation
in the event of mains voltage fluctuations.
4. Difficulty was encountered in devising satisfactory magnetic recording
and reading techniques and this has delayed the program. However this problem
has now been solved and the final size and weight of the unit is expected to
meet or excel the specified values. It is now estimated that the development
model will be completed sometime in December.
5. A progress report summarizing the work performed during the months
of July, August and September was reported to have been mailed.
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Declassified in Part - Sanitized Copy Approved for Release 2014/03/05.: CIA-RDP78-03424A000400060007-6
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