Section III. PRINCIPLES OF OPERATION
1-11. SYSTEM TECHNICAL PRINCIPLES OF OPERATION.
The Clothing Repair Shop is trailer mounted (figure 1-0) and is complete with all equipment necessary for the
repair of clothing, and is designed for field use where it is normally set up in tents or temporary shelters. The
clothing repair shop is rated for 208 Vac, 60 Hertz input power. Individual components are all rated for 105 Vac
to 120 Vac, 60 Hertz input power.
1-12. COMPONENT PRINCIPLES OF OPERATION.
Clothing Sewing Machine.
The clothing sewing machine is designedfor stitching clothing, coats, suits, skirts, and shirts. Each time
the arm shaft rotates, the oscillating shuttle catches the needle thread, loops it around the bobbin
thread, and forms a lockstitch. The clutch allows the operator to control the speed.
Button Sewing Machine.
The button sewing machine makes a single -thread chain stitch and sews on buttons with sixteen
stitches, including a cross-over stitch and a knotting stitch. It can be adjusted for buttons with holes
7/64 inch to 7/32 inch apart from center. It is equipped with a vibrating needle bar, and is equipped
with a clamp for sewing two hole and four hole flat buttons, from 20 to 45 ligne, close to the material,
with through and through stitching.
Darning Sewing Machine.
The darning sewing machine is a single needle heavy duty, cylinder arm, lockstitch machine with a
vertical axis rotary sewing hook. It is designed for darning and mending all types of medium to heavy
weight materials, including cloth, vinyl, leather, canvas, denim and various coated and laminated
materials. It is suitable for repairing such products as overalls, work shirts, uniforms, tents, tarpaulins,
marine and truck covers and numerous other articles. Tubular and curved articles such as sleeves and
pants legs are easily handled on the cylindrical bed of the machine.
The grommet press is a small, hand operated machine consisting of a metal frame that houses the
plunger. The press comes equipped with assorted sets of chucks and dies that are easily interchanged.
The chucks are installed in the plunger and dies are installed in the lower portion. When the hand lever
is pushed down, the chuck presses upon the die, molding the separate metal snap fastener parts into
the finished fastener and attaching the fastener to the material.
Tack-Button Attaching Machine.
The tack-button attaching machine is a small, hand operated machine consisting of a plunger housed in
a metal frame. With a set of dies installed that match the tack-button, the handle is pushed down. The
dies press upon the separate button parts into a finished tack and attach the fastener to the material.
Heat Sealing Machine.
The heat sealing machine is designed to handle any type of transfer and fusing operation from plastisol
and ink transfers to sublimation and heat activated embroidery.