WINDING MACHINE FOR SMALL TOROIDAL CORES

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A005600540003-8
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 21, 2016
• Document Release Date: November 25, 2008
• Sequence Number: 3
• Publication Date: February 19, 1959
• Content Type: REPORT

Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
 Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
Y
Lc~ 1 c-tee .~' "~~
The machine Is designed for winding of mul-
tilayer coils of enamel or enamel plus silk insulated wires
of 0.05 to 0.11 mm in diameter on toroidal cores of 2 to 3 mm
inside diameter.
The winding is done by two rocking needles and two
sliders drawing the free end of the wire around the core
in successive steps.
The other parts of the machine serve for core rotation,
winding direction change and winding pitch control.
The feeding of cores Into roller bed is done by a maga-
zine feeder.
The machine is equipped with a counter switching off
the machine on completion of the preset number of turns.
The machine design permits to modify it for simultaneous
winding of two toroidal cores by one end of wire. In that
case two operating and two feeding systems are mounted
on one machine.
Main Technical Data
1. Speed of winding . . . . from. 120 to
200 turns per
minute
2. Maximum length of free
end of wire . . . . . . . 350 mm
3. Magazine capacity . . 50-70 cores
4. Production rate (for cores
with two 50 turn windings) 40 cores
per hour
5. Motor . . . . . . . . . 10 W,
2,000 r.p.m.
6. Power supply . . . . . 110V d.c.
or 127V,
50 C.P.S.
7. Dimensions . . . . . . . 36OX29OX
X355 mm
8. Weight . . . . . . . . 12 kg
Printed in
Soviet Union
Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
 Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
All Electrical Connections
are IMPORTANT!
Too often electrical connections are taken for
granted. Too often we do not realize that no elec-
trically operated or electrically controlled device is
any better than its poorest electrical connection.
Failure analysis of any component or any elec-
tronic system can be reduced to four fundamental
points:
1. Defective or improper material;
2. Improper processing;
3. Improper design; or
4. Faulty workmanship.
It is suggested you set up a Reliable Electrical Con-
nection Program and follow it all the way through
by critically analyzing the functions of all electrical
connections in terms of:
1. The materials which are to be joined together;
2. The method and equipment to be used to pre-
pare them for joining;
3. The method and equipment used to join them;
4. The materials and methods which must be used
to protect the points;
5. The usage or the environment of the finished
part or system; and
6. The servicing and maintenance of the part or
system.
Whether or not the connection is in plain sight or
concealed within a component part, such as in a
relay, tube or diode, is immaterial.
The foregoing is an abstract of an article originally
published in the Syracuse Scanner (i.R.E.) and re-
printed in The Eraser Company's Bulletin No. 14.
Copies may be had on request, no charge.
Needles Wind Russian Cores
Size of demonstration toroids (1/8 in o.d.) in-
dicates USSR's miniaturization progress.
Miniature Toroidal Core Winder shown at the Inter-
national Automation Exhibition in New York recently
did not require the wire to be prewound on ring
bobbins.
The machine was part of the USSR Chamber of
Commerce exhibit. Several electronics firms em-
ployees who saw it remarked that the size of the
demonstration cores ('ie in. o.d.) and the machines
existence testified to Russian miniaturization progress.
The machine winds insulated wires of 0.05 to 0.11
mm diameter on cores with inside diameters of 2 -to
3 mm (0.08" to 0.12"). It occupied little more than
a square foot of bench space, winds at 120 to 200
Approved For Release 2008/11/25: CIA-RDP80T00246AO05600540003-8
TOP-
ROCKING
NEEDLE
WIRE
CORE \/ DOT TOM SLIDER
HDI F TO PFRMIT
NEEDLE OVERTRAVEL
TO TCP
ROCKING
NEEDLE
Fig 1
Sliders working in unison with "crocheting needles" pull free
end of fine magnet wire around and through miniature cores of
120 to 200 turns a minute.
turns a minute and will turn out 40 cores with two
50-turn windings in one hour.
Winding is done with two rocking needles, similar
to crochet needles, and two sliders. The top slider has
a notch to push the wire over the top of the core. The
bottom slider has a semicircular end to pull the wire
under the bottom of the core.
The basic motion of the machine is shown in figures
1, 2, 3 and 4. The free end of the wire is drawn
around the core in discrete steps during each cycle
of the machine.
The rocking needles ride almost a full circle in
the drum of the machine case. The drum is 6 or 7
inches in diameter in the model shown. Full circle,
rather than reciprocating, action apparently gives
enough travel to the free end of the wire. Maximum
length of wire is 350 mm (14 inches).
The toroids lay on a roller bed consisting of 3
rotating pins with formed rubber heads. The rollers
rotate the cores during the winding. A lever system
will spread the pins to accept several sizes of cores.
Cores are fed to the roller bed by a tube in which
50 to 70 cores are loaded on a center post. Finger
presure on top of the tube extends the post to the
roller bed. The rollers grasp the bottom core and it
slips over springs on the post as the post retracts.
After loading a core, the operator strips sufficient
wire off a supply spool in the machine. He turns the
winding mechanism with a hand wheel until the rock-
ing needles engage the wire, then turns on the 10,
2,000 rpm drive motor. A counter switches off the
machine on completion of a preset number of turns.
By doubling up the mechanism, 2 cores may be
wound with one end of wire.
Reprinted, by permission, from the July 4, 1958 issue of
ELECTRONICS, a McGraw-Hill Publication, copyright 1958.
it