PRODUCTION OF ELECTRIC DRIVES FOR MOLDING MACHINES AND VERTICAL LATHES AT MEZ VSETIN

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00046R000500010005-0
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 27, 2016
• Document Release Date: May 22, 2013
• Sequence Number: 5
• Publication Date: April 26, 1955
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/05/22 : CIA-RDP82-00046R000500010005-0
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
This material contains information affecting the Na-
tional Defense of the United States within the mean-
ing of the Espionage Laws, Title 18, V.S.C. Secs. 793
and 794, the transmission or revelation of which in
any manner to an unauthorized person is prohibited
by law.
C-O-N -'-I-D-E-N-T-I-A-L
Production of Electric Drives
for Molding Machines and Vertical
Lathes at MEZ Vsetin
REPORT NO.
DATE DISTR.
NO. OF PAGES
REQUIREMENT NO.
REFERENCES
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
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Attached isl las received
LIBRARY SUBJECT AND AREA CODES (C2)
3-02-o4o6 4/55
2 -5/74 I .72
741 .42 27M
3-5/7)+(.72 27M
2.5/741.42 27M
C-O-N-F-I-D-E-N-T-I-A-L
STATE 1fX ARMY 1TX NAVY
Fdx
k' '81 I I AEC I I ORR Ely x I
AIR
'NOTE: Washington distribution indicated by "X"; Field distribution by "#".)
26 April 1955
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CONFIDENTIAL
COUNTRY Czechoslovakia DATE DISTR. 11 Mar. 1955
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SUBJECT Production of Electric Drives for Molding NO. OF PAGES 2
Machines and Vertical Lathes at MEZ Vsetin
DATE OF INFORMATION
THIS IS UNEVALUATED INFORMATION'.
1. In 1949, TOS (Factory for Production of Machine Tools), National
Enterprise, in Kurim (N 49-18, E 16=32) ordered three identically
designed electric drive units.from MEZ Vsetin.in Vsetin (N 49-20,,
E 18-00). They were to be used in molding machines produced at
TOS. The first unit was delivered at the end of 1950 and was for
the molding machine which TOS Kurim used in its plant. The second
and third units were delivered during 1951. The'second unit was
for a molding machine destined for the V.I. Lenin.Works in Pilsen, 50X1
Vehicle Division. it was to be used in Department
83 which was the department for tank production. An official from
the Vehicle Division visited MEZ Vsetin in early spring 1951 to
urge soonest possible delivery because of the importance of the
unit.
The electric drive was a Ward-Leonard type; its moor delivered 50X1
an output of 30 kw. at,1,500 rpm. The revolutions could be
regulated down to 50 rpm by means of an amplidyne. The top bench
speed was 1,500 millimeters per minute at 1,500 rpm; the lowest
speed.was 50 millimeters per minute at 50 rpm. The regulation of
speed was very accurate; the lowest speed could actually be achieved
at from 49 to 51 rpm in both directions and with no load. The entire
electric drive was completed and installed by the TOS plant itself.
2. In 1950, TOS in.Kurim ordered 36 electric drive units for another
type of molding machine which source was unable to describe.
Deliveries of these units started in 1952 and there were still
.1 some units to be delivered as of late summer 1954. The DC drive
was rated for 15 kw. at from 750 to 1,500 rpm. The motor was of
the same type as mentioned in paragraph 1 above, but the generator
was only rated for one half as much output as the generator in the
above-mentioned drive.
3. TOS Kurim produced molding machines for both domestic and Satellite
markets. Around 1952, the plant manufactured several planing
machines with thyratron feeding. This was for experimental purposes
only. The machines developed an output o;. 7.5 kw. at from 750 to
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Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/05/22 : CIA-RDP82-00046R000500010005-0
 Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/05/22 : CIA-RDP82-00046R000500010005-0
CONFIDENTIAL
1,500 rpm.
e TOS development plant in.'
Prague-Liben, Na Zertvach Street, was also engaged.in experiments
with thyratron feeding.
4. As of late summer 1954, the Specifications.Department of MEZ,'Vsetin
worked on the electric drive for a molding machine which was-
developed in ZPS (Precision Machinery Works) in.Gottwaldov,; The
bench width of this machine was 3,150 mm. The bench.wae.to fie
driven by two DC motors, each of which was rated for an output
of 15 kw. at from 750 to 1,500 rpm. The generators were to be
regulated by an amplidyne. Only this one unit had been ordered
as of late -summer 1954.
5. Some of the, mechanical parts of the molding machines mentioned
in this report were the same size as mechanical parts of the*
planing machines for which MEZ Vsetin delivered the electric,
drives.1 The ZPS aottwaldov molding machine, mentioned`in.
paragraph 4 above, was of the same size as the H 31 50 planing
machine.1 There was an agreement between Czechoslovakia and
Hungary to the effect that the production of molding machines
with a single cutting-tool support would be Hungary's responsibility
while Czechoslovakia would produce molding machines with a frame
cutting tool support.; These were usually larger machines than those
with the single support.
6. MEZ Vsetin also supplied electric drives for very large vertical.
lathes produced by CKD in Blansko (N 4.9-229 E 16-40). They were
of two types.-- 2,500 and 4,ooo -- the figures representing the.
diameter of the rotating base.in millimeters, The same electric
drive was used for both types of machines, i.e., a DC drive?mhotor
which had an output of 45 kw., and a maximum of '1, 800 rpm. 'The
number of revolutions was regulated by field weakening. The field
could be weakened to less than ?,.5p% of its maximum value. The
electric drive was calculated 40.nd 'designed 'by the V.I. Lenin'Works
and the.first few units were produced by them, MEZ Vsetin took over
the production in 1951 using the original design, except that they
equipped the drive with rototrol control. MEZ Vsetin started
deliveries in 1953 and about 20 units were delivered asp"?f l.te
summer 1954. Some of the first units were considered ur eb't"And
were destined for the USSR.
.the 2,500 than a 9000 t more of
ype were produced. #:.was believed that
deliveries would continue for an indefinite. period.
In 1953, ZPS Hulin (N 49-19, E 17-28) ordered an electric drive
for a type 'of vertical lathe which was to be produced in that
plant. The driving motor was to be rated for approximately 25 kw.
As of late summer 1954, the prototype was still in the Specifications
Department of MEZ Vsetin. ZPS Hulin considered this type of
vertical lathe to be one of its. main items of production and, as
a result, rather large continuous orders for these electric drives
were expected at MEZ Vsetin.
CONFIDENTIAL
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