US1181523A - Sewing-machine power-bench. - Google Patents

Description

LHALL.

SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB-21. l9l5.

Patented May 2, 1916. j 5 SHEETS-SHEET 1.

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J. HALL.

SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB.27. I915.

1,181,523. Patented May 2,1916.

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SEWING MACHINE POWER BENCH.

APPLICATION FILED 8.27.1915.

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j. HALL.

SEWING MACHINE POWER BENCH.

APPLICATION mm 5.21. 1915.

1,181,523. Patented May 2,1916.

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SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB. 27. 1915.

Patented May 2,1916.

5 SHEETS-SHEET 5 UNITED STATES PATENT OFFICE.

JAMES HALL, OF GUIDE BRIDGE, NEAR MANCHESTER, ENGLAND, ASSIGNOR T0 JONES SEWING MACHINE COMPANY, LIMITED, OF GUIDE BRIDGE, NEAR MANCHESTER,

ENGLAND.

SEWING-MACHINE POWEKBEN CH.

Specification of Letters Patent.

Patented May 2, 1916.

To all whom it may concern:

Be it known that I, JAMEs HALL, a subject of the King of Great Britain, residing at Guide Bridge, near Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Sewing-Machine Power-Benches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in that type of sewing machine power benches in which a number of sewing machines are employed upon the bench, driven direct from a continuous shaft coupled together in sections which passes through the various transmitting pulleys and friction clutch members connected therewith so arranged that any of the machines may be stopped or started without affecting the adjacent machines, and when any particular machine is stopped, the pulley which drives that ma chine will also be stopped, and all moving parts are fully incased so that there is no risk of accident to the operator working the machine.

My invention has chiefly for its object in the first place, to provide means whereby the said shaft is so journaled or mounted that the friction clutch drive will work with a minimum loss of power and the wear will be equally divided between the driven friction clutch pulley and the driving shaft, in lieu of being continuous on the latter throughout as hitherto has been the case. Further, the said driven friction clutch pulley may be so constructed as to be capable of carrying pulley rims of various diameters, to permit of driving the sewing machines at different speeds and the hub or boss of the pulley which carries the said rims I may groove to form itself one of the said pulley. rims.

My invention has chiefly for its object in the second place to so arrange the said protecting casings that they may be fixed or detached without interfering with or the necessity of taking down any of the driving arrangements.

I attain these objects by the mechanism illustrated in the accompanying five sheets of drawings, in which Figure 1 is an elevation, Fig. 1* a perspective View of a detail, Fig. 2 a plan, and Fig. 3 a longitudinal section of a power bench transmitter and easing enshrouding the same constructed in accordance with one embodiment of my invention. Figs. 4 and 5 are sectional end views of the transmitter casing. Fig. 6 is an elevation, Fig. 7 a plan, and Fig. 8 a longitudinal section of a power bench transmitter and easing enshrouding the same constructed in accordance with another embodiment of my invention. Figs. 9 and 10 are sectional end views of the transmitter casing. Fig. 11 is an elevation of a sewing machine power bench provided with a plurality of the transmitters shown on Sheet 1.

Similar letters refer to similar parts throughout the several views.

Referring to the figures generally, the bench a is mounted upon standards or legs b which are of ordinary construction and spaced a suitable distance apart, each section carrying a sewing machine.

Referring to Sheets I and II, according to one embodiment of my invention, to the cross rail a, which is bolted to the upper portion of the standards 6, I secure a bracket 0 having a two part boss d in which is journaled the boss 6 of a driven clutch pulley f in which runs the driving shaft 9, which extends forward and is coupled up to the other transmitters or friction clutch devices h, f, spaced along the bench as shown in Fig. 11. The boss of the driven clutch pulley f is bored so as to fit and form a bearing for the driving shaft 9 which extends through it forward to the next transmitter or friction clutch device. On this shaft, alongside the driven clutch pulley f, is secured the driving clutch disk h which revolves continuously with the shaft 9 and between the said driven clutch pulley and clutch disk a coiled spring i is employed. Pivoted to the bracket 0 is a lever is which is arranged to press onto the end of the boss 6 of the driven clutch pulley f, through the medium of an anti-friction ball case Z interposed between the end of the boss 6 and the lever 70. The lever is is connected by a wire m to an ordinary treadle plate (not shown) secured to the floor and pressed by the foot of the operator.

WVhen the sewing machine is required to be put in operation, the lever is actuated so as to move the driven clutch pulley f toward and bring the same in driving contact withthe driving clutch disk It secured on the driving shaft g. The bracket 0 is also provided with a circular braking face n, positioned so as to face a similar braking face 0 on the driven clutch pulley f which may consist of a rim of leather or similar material. Immediately the pressure is taken away from the said treadle plate by the operator, the driven clutch pulley f is pressed back by the spring i which causes the driven clutch pulley f to come in contact with the braking face n on the bracket 0 and thereby to be stopped immediately. The bracket 0 is also provided with a second boss 29 through which the driving shaft 9 passes. Beyond this boss is placed another anti-friction ball case Q, adjacent to the back face of the said boss and behind this boss a collar '7 is secured to the driving shaft 9. This arrangement prevents the driving shaft g from moving laterally when pressure is applied by the lever In to bring the driven clutch pulley f in contact with the driving clutch disk It. The anti-friction ball cases Z, q will take up all lateral thrust caused by the clutch drive and thus enable the latter to work with a minimum loss of power. Another advantage of this arrangement is that when the driven clutch pulley f is brought into contact with the driving clutch disk h, the whole is journaled or run on the boss or bearing d of the driven clutch pulley f while immediately the driving clutch disk h is released from the driven clutch pulley f, the latter ceases to run and the driving shaft 9 runs in the bearing formed by the boss e of the driven clutch pulley f. Hence, as a great proportion of the operators time is taken up by arranging the work, it will be readily seen. that the wear will be equally divided between the driven clutch pulley f and the driving shaft g.

The driven clutch pulley f and driving clutch disk It I inclose by a casing s secured underneath the sewing machine bench which casing is open at the top and has a slot 15 in the right and a slot in in the left hand side. See also Fig. 11. The said slots are made wide and deep enough to respectively admit the adjacent boss (Z and end of the bracket 0 and the driving shaft 9 and when it is desired to remove the casing to allow of readily withdrawing it after having unscrewed it from the sewing machine bench.

The lower end of the slot u is formed with an annular rim 2) open at the top and adapted to carry one end of a longitudinally divided tubular casing 11;, see Fig. 1* enshrowding the driving shaft between the transmitters or friction clutch devices, the other end of the said tubular casing being carried by an annular rim 1 on the boss .2 of the bracket 2 in which the end of the driving shaft 9 is mounted, while the end of the next sectional tubular casing to is carried by an annular rim at on the second boss 19 of the bracket 0.

Referring to Sheets III and IV, according to another embodiment of my invention, I may construct the hub or boss (2 of the driven clutch pulley 7' so as to carry or be provided with pulley rims of various diameters, see more particularly Fig. 8, to permit of driving the sewing machine at different speeds and the hub or boss 0 which carries the said rims I may groove as shown to form itself one of the said pulley rims. For; this purpose the hub or boss 6 is formed with a flange 10 to which the said pulley rims are secured by screws 12. In this embodiment, the driven clutch pulley f has its boss 6 also journaled in the boss (Z of the bracket 0 in which runs the driving shaft 9 and the driving clutch disk It is also secured upon the driving shaft g. The boss J of the bracket 0 is also formed with a circular braking surface nand the driven clutch pulley f with braking faces 0 of leather or similar material. The spring located in the former embodiment between the driven clutch pulley f and the driving clutch disk It I dispense with in the present instance while the boss e of the said driven clutch pulley f I extend some distance beyond the boss (Z of the bracket 0 in which it is journaled. The extended part is reduced in diameter so as to form a shoulder 13 against which abuts an antifriction ball case q while on the free end of the said extended part is secured a longitudinally adjustable collar 1", between which and the anti-friction ball case 9 engages the lever is pivoted to the boss at of the said bracket 0, which lever I place under the influence of a spring 14:.

hen it is desired to operate the sewing machine, the lever I: is actuated by the usual foot pedal (not shown) and thereby pressed against the anti-friction ball case 9 which causes the driven clutch pulley f to be forced into driving contact with the driving clutch disk It secured on the driving shaft g and be rotated thereby while when releasing the said foot pedal, the spring 14 will cause the lever A; to press against the collar r on the extended hub or boss part e and thereby bring the driven clutch pulley f out of v the sewing machine inoperative. This backward movement of the driven clutch pulley 7' causes it to be pressed against the braking face a and thus stop instantly as is the case in the former embodiment described. The bracket or is also provided with a second boss see also Fig. 11 which carries one end of the sectional tubular casing to through which the driving shaft 9 extends to the adjacent transmitter or friction clutch device while the other end of the sectional tubular casing is carried by the boss "(1 of the casing s inclosing the latter. In this instance the end of the tubular casing w adjacent to the end bracket 2 is carried by means of a cap 11 fitted onto the boss of the bracket In this embodiment the driving shaft bracket employed at the end of the sewing machine bench is provided with an anti-friction ball case 15 located between the end of the boss 2 and a collar 16 secured on the driving shaft 7 and adapted to take up the end thrust eX- crted on the driving shaft 9 when the lever ll? is actuated to bring the driven clutch pulley into driving contact with the driving clutch disk h secured on the driving shaft 9. The casing s in this case may be such as described in the former embodiment or formed so as to cover only the front part of the transmitter or clutch device as shown and have in one side a slot u to permit of removing it sidewise.

I claim:

1. In a sewing machine power bench in combination. a hanger bearing, a driven clutch pulley with boss journaled in the said bearing and peripheral driving means. a driving shaft longitudinally stationary journaled in said driven clutch pulley. a driving clutch disk adjacent to the said driven clutch pulley secured to and rotating with the said shaft, the ends of the latter extending beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon and means in operative connection with the rear end of the boss of the said driven clutch pulley for bringing the driven clutch pulley into contact with the said driving clutch disk.

2. In a sewing machine power bench in combination, a plurality of hanger bearings, a driven clutch pulley with boss journaled in each of the said hanger bearings and peripheral driving means, a driving shaft journaled in and extending through all of the said driven clutch pulleys, a driving clutch disk adjacent to each of the said driven clutch pulleys secured to and rotating with said shaft, and means in operative connection with the rear end of each of the bosses of the said driven clutch pulleys for bringing the said driven clutch pulleys independently in and out of contact with the said drii'ing clutch disk.

3. In a sewing machine power bench in combination. a hanger bearing, a driven clutch pulley with boss journaled in the boss of the said bearing and peripheral driving means. a driving shaft journaled in the boss of the said driven clutch pulley. a driving clutch disk secured to the said shaft and adapted to rotate independently from the said driven clutch pulley, the ends of the shaft extending beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon, and a lever pivoted to the said bearing and with upper end in operative connection with the rca r end of the boss of the said driven clutch pulley to bring the said driven clutch pulley in and out of contact with the said driving clutch disk.

l. In a sewing machine power bench in combination. a bearing, a driven clutch pulley journaled in the said bearing with boss extending rearwardly through the said bean ing, two collars fixed on the said extended boss, a shaft journaled in the said driven clutch pulley with both ends extending through and beyond it, a driving clutch disk secured to the said shaft, a lever pivoted to the said bearing and with upper end located between the said two collars to move the said driven clutch pulley in and out of contact with the said driving clutch disk.

5. In a sewing machine power bench in combination, a hanger bearing, a driven pulley with boss journaled in the said bearing and peripheral driving means, the said bearing having in front a braking face and the said pulley being provided on its face adjacent to the said bearing with a brake rim to come into contact with the said braking face, a driving shaft journaled in the said driven clutch pulley, a driving clutch disk secured to the said shaft and adapted to rotate independently from the said driven clutch pulley, the ends of the said shaft eX- tending beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon, and a lever pivoted to the said bearing and its upper end adapted to press the said driven clutch pulley alternately into contact with the driving clutch disk and the said braking face to instantly stop the rotation of the said driven clutch pulley.

6. In a sewing machine power bench in combination. a hanger bearing, a driven clutch pulley with boss ournaled in the said hanger bearing, a rim with peripheral driving means rendered interchangeable on the body of the said driven clutch pulley and the said body having circumferentially a groove adapted to receive the driving band when the said rim has been removed, a driving shaft longitudinally stationary journaled in the said driven clutch pulley, a driving clutch disk adjacent to the said driven clutch pulley secured to and rotating with the said shaft, the ends of which eX- tend beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon.

7. In a sewing machine power bench in combination, a plurality of separate hanger bearings, a driven clutch pulley with boss journaled in each of the said bearings and peripheral driving means, a driving shaft journaled in each of the said driven clutch pulleys, a driving clutch disk secured to the said shaft adjacent to each of the said driven clutch pulleys. the ends of the said shaft extending beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon, a casing co"- ering said driven clutch pulley and driving clutch disk. a laterally extending boss on the said bearing, a casing covering the said shaft and carried at one end by the said laterally extending boss and a boss on the side of the adjacent clutch casing for carrying the other end of the said sectional tubular casing.

8. In a sewing machine power bench in combination, a plurality of separate hanger bearings, a driven clutch pulley ournaled in each of the said bearings, a driving shaft journaled in each of the said driven clutch pulleys, a driving clutch disk secured to the said shaft adjacent to each of the said driven clutch pulleys, the ends of the said shaft extending beyond the said clutch disk and pulley to permit of rotating by the said shaft a series of the said clutch disks and pulleys in alinement thereon, a casing cov ering the said driven clutch pulley and driw ing clutch disk, a laterally extending boss on said bearing, a :asing covering the said shaft and carried at one end by the said laterally extending boss and a boss on the side of the adjacent clutch casing for carrying the other end of the said casing.

Signed at Manchester, England, this 16th day of. February. 1915.

J AMES HALL.

'itnesses FERDINAND B, Bossirmo'r, STANLEY E. BRAMALL.

Qopies 01 this patent may be obtained for five cents each, by addressing th Commissioner of Patents, Washington, D. 0."

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