Class 11.

THE Cylindrical Bed or Work-supporting Arm of the machines of Class 11 is distinguished for its unusual length; it readily enables the stitching of long boot legs, leather and canvas mail bags, coal bags and other long tubular or cylindrical articles. The great length of the bed from needle to base of arm is also of special advantage in quilt- ing comfortables, mattresses and similar work.

These machines are fitted as ordered for either Cloth or Leather stitching and are extensively and successfully used for felling up trouser legs made of canvas, heavy denim, etc. The bed is 3 1/2 inches in diameter at its outer end, which incloses mechanism carrying a long-beak oscillating shuttle. A hand-wheel is located on the arm in front of the operator, to 'enable convenient starting and stopping of the machine.

The points of difference in the machines of Class 11 are described as follows:

Machine No. 11-1 and No. 11-9, arranged, respectively, for leather and cloth, feed across the arm; Machines No. 11-2 (for leather) and No. 11-5 (for cloth) feed up the arm; Machines No. 11-1 and No. 11-2 can be fitted with Roller Presser it desired, but, in the regular course, all four machines have the Yielding Presser.

Machines No. 11-3 and No. 11-6, arranged, respectively, for leather and cloth, feed across the arm and have the Alternating Presser.

The Alternating Presser device comprises two pressers, acting separately and alternately; the first moves forward with the feed and is then lifted and returned to its position; the other holds the material down while the first rises and until it again descends upon the fabric, but is raised while the fabric is moved forward by the feed. Each presser, while resting upon the work, forms a fulcrum upon which the other is raised, consequently the height of their movement always corresponds to the thickness of the material, thus allowing the free passage of material having varying thicknesses, without affecting the perfect uniformity and integrity of the stitch. These pressers have a high lift, and are especially efficient in the quilting or stitching of thick cotton comfortables, felt goods or similar thick and soft material.

No. 11-4, which for leather, moves with also feeds across the arm, but is fitted with the Vibrating Machine Presser, which moves the material and secures the uniform movement of two or more thicknesses or plies of fabric; it is especially effective on material having rough, uneven or adhesive surfaces.

Machine No. 11-7 feeds up the arm, making any length of stitch up to one half inch; Machine No. 11-8 is precisely similar to No. 11-7, excepting that the feed is reversible, which enables tying the end or any other point on the seam. The reverse stitch can be arranged to carry thread through the same needle-hole as the forward stitch, or it can be brought between the forward stitch, as desired.

Machine No. 11-10, for seaming long boot legs, feeds up the arm and makes the overseaming stitch; the arm is 30 inches long from needle to its inner end.

The following is lifted from John Langdon's Comprehensive Model List

11FS-1		Industrial	(Deerborn) Cylinder bed; blindstitch machines. Upper feed. Extra long arm. Single thread chainstitch. Stitch length 4 to 8 SPI. For staying and padding on fur coats.
11- (class)		Industrial	Cylinder bed 3 3/8" diameter at end. Long arm. Space to right of needle 21". Side wheel on right of arm. Drop feed. Cylinder oscillating shuttle. For stitching heavy tubular work - mail bags; coal bags; making grommet holes and overseaming or zigzag stitching on canvas, leather and heavy goods, etc.	128x3 (1653)
11-1		Industrial	Drop feed across the arm. For leather. Yielding presser but can be fitted with roller presser.
11W1		Industrial
11-2			Drop feed up the arm. For leather. Yielding presser but can be fitted with roller presser.
11W2	(Cancelled Feb. 1947)	Industrial	For light and medium weight fabrics. For foot power. Bobbin winder on arm. Stationary bobbin case. Drop feed.
11-3		Industrial	Drop feed across the arm; alternating presser. For leather.
11-4		Industrial	Drop feed across the arm; vibrating presser. For leather
11-5		Industrial	Drop feed up the arm. For cloth.
11-6		Industrial	Drop feed across the arm; alternating presser. For cloth.
11W6	(Cancelled Dec. 1949)	Industrial
11-7		Industrial	Drop feed up the arm. Max stitch length 1/2".
11W7	(Cancelled July 1938)	Industrial
11-8	(Cancelled Jan. 1949)	Industrial	Same as 11-7 but with reversible drop feed, up or off the arm; stitch length 1/8" to 1/2". For cloth.	7x1 or 7x2
11-9		Industrial	Drop feed across the arm. For cloth.
11-10		Industrial	For seaming long boot legs. Feeds up the arm and makes overseaming stitch. Arm is 30" from needle to its "inner end".
11-11		Industrial	Drop feed, across the arm; speed 650. For leather.	7x1 or 7x2
11-12		Industrial	Drop feed, across the arm; speed 650. For cloth.	7x1 or 7x2
11-13		Industrial	Drop feed, up the arm; speed 650. For leather.	7x1 or 7x2
11-14		Industrial	Drop feed, up the arm; speed 650. For cloth.	7x1 or 7x2
11-15		Industrial	30" space to right of needle. Drop feed across the arm. Vibrating presser, SDA and column stand. For buggy and carriage dashes.	7x1 or 7x2
11-16		Industrial	30" space to right of needle. For overseaming up the arm. or straight stitches feeding across the arm. Drop feed; vibrating presser, SDA and column stand. Speed 650. For long boot legs. (02/1952)	7x1 or 7x2
11-17		Industrial	Drop feed up the arm; overseaming; with parts to adapt for feed across the arm for plain stitching. Speed 650. For military boot legs, etc. (02/1952)	7x1 or 7x2
11-18		Industrial	Drop feed across the arm. Alternating pressers. Speed 650. For leather.	7x1 or 7x2
11-19		Industrial	Drop feed across the arm. Alternating pressers. Speed 650. For leather.	7x1 or 7x2
11-20		Industrial	Drop feed across the arm. Alternating pressers. Speed 650. Foot lifter. For cloth.	7x1 or 7x2
11-21		Industrial	Drop feed up the arm. Makes 1/2" stitch or less. Speed 650. For leather or cloth.	7x1 or 7x2
11-22		Industrial	Drop feed across the arm. 30" needle to base of arm. Vibrating presser. For carriage and buggy dashes; leather, etc.	7x1 or 7x2
11-23		Industrial	Drop feed up the arm. Cylinder 2 1/2" diameter. Alternating pressers. Speed 650. For stitching fine boot legs, etc.	16x2
11-24		Industrial	For making eyelets or grommet holes with or without metal rings in canvas and heavy fabrics. 30" space to the right of the needle.	7x1 or 7x5
11-26		Industrial
11-29		Industrial	For general work in canvas. Feed ACROSS the cylinder. Cylinder diameter 3 3/8" at end. Space at right of needle 21". Maximum stitch length 2 2/3 to the inch. Alternating pressers. Cylinder shuttle. Speed <650. (02/1952)
11-30		Industrial	Two needles, two shuttles. Cylinder bed. Very long arm - 30" space to the right of needle. For stitching rubberised material in the manufacture of aeroplanes and balloons.	29x3
11-32		Industrial
11-37		Industrial	For stitching tubular articles of light and medium leather. Feed UP the the cylinder. Cylinder diameter 2 1/2" at end. Space at right of needle 21". Maximum stitch length 4 to the inch. High point shuttle. Speed <650. (02/1952)
11-38		Industrial	(Formerly 11SV46). For general work in canvas or leather. Diameter of bed 5" at end. Feed UP the arm. Clearance under presser foot 3/4". Alternating pressers, Reversible feed. Speed <500. (02/1952)