US735641A - Feeding device for sewing-machines. - Google Patents

Description

PATENTED AUG. 4, 1903.

E. F. WILSON. FEEDING DEVICE FOR SEWING MACHINES.

APPLIOATION FILED SEPT. 29. 1902.

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f ,Ma-M- No. 735,641. PATENTED AUG. 4, 1903; E. F. WILSON. I

FEEDING DEVICE FOR SEWING MACHINES.

APPLICATION FILED SEPT. 29, 1902.

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Wan 6W 3 WAR/1m null, msnmcmw n c U IT D STATES Patented August 4, 1903.

PATENT OFFIcE- EDWARD F. WILSON, OF CHICAGO, ILLINOIS, AssIcNoR TO H. OHANNON COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FEEDING DEVICE FOE SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 735,641, dated August 4, 1903.

Application filed September 29, 1902- Serial'No. 125,219. (No model.) I

Machines; 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 an improved auxiliary feeding device for sewing-machines, the object being to provide a device of this character which will draw the cloth away from the sewing-machine after it has passed under the needle, which will be positive in its action, simple in construction, and easily operated for entering the cloth between its gripping members; and .it consists in the features of construction and combinations of parts hereinafter fully described and claimed. I

In the accompanying drawings, illustrating my invention, Figure 1 is an end elevation of a device made in accordance with my invention shown mounted on the table of asewing machine. Fig. 2 is a side elevation of my device, part-1y in section. Fig. 3 is a detail vertical section, enlarged, on. line 3 3 of Figs. 1 and 4. Fig. 4 is a detail vertical section, enlarged, on line 4 4 of Figs. 2 and 3. Fig, 5 is a detail cross-section, enlarged, on line 5 5, Fig. 4. Fig. 6 is a detail cross-section on line 6 6, Fig. 5. Fig. 7 is a top plan View of the guard-plate.

My device comprises a pair of rollers set in line with the seam as it leaves the sewingmachine, operated by power from the sewingmachine and designed to pull on the material being sewed. It will thus carry the goods away from the machine and prevent the clogging of the sewing-machine by reason of the goods accumulating at the rear of the needle.

Referring now to said drawings, l'represeuts a toothed roller mounted on a shaft 2, by which it is revolved. It is nearly inclosed in a pocket 3 in a frame 4 and is partly covered bya plate 5. Said frame 4 isadapfed to carry the working parts of my device and is mounted on'the sewing-machine table'6 at the rear of the sewing-machine 7, with the roller 1 in line with the needle 8 of the sewing-machine. Said shaft 2 is mounted in bearings on said frame 4 andcarries a pulley 9, by

means of which it is revolved. Said shaft 2 is revolved at a suitable speed in reference to the speedof the sewing-machine by means of pulleys and belts which connect said shaft with the power-shaft 9 of the sewing-machine.

A second roller 10 is mounted in a frame 11 above said toothed roller 1, said frame being carried on the lower end of a tube 12. Said tube is slidingly mounted in the outer end of an overhanging arm 13 of said frame 4 and is yieldingly held at the lower limit of its 1110- tion by means ofa mechanism to be described later. Said roller 10 is preferably made of a metal spool 14, the face 15 of the spool being covered with a comparatively soft material, I such asfairly-hard vulcanized ru bber or other suitable material. This is done in order that the teeth or pins 16 of said roller 1 may not be worn or dulledshould the device be operated .without any material between the rollers and also that the friction of the soft roller may add to the pullingeffect of the device. Said roller 10 is revolubly. mounted on a pin 16, which is rigidly moun ted in said frame 11, said frame being pivotally mounted on the lower end ofsaid tube 12. Said roller 10 is revolved on account of being pressed against the cloth pinched between the two rollers, and its bearing is oiled through the oil-hole 17, which is drilled into the middle of said pin 16, and thence out to its lower surface by the hole 18. Said frame 11 is pivotally mounted in order that the material between the rollers maybe held with equal pressure the whole length of the rollers, even when the material may be of varying thickness from end to end of said roll- Returning now to the means of holding down said roller 12 upon said roller 1, a spiral push-spring 19 is mounted around said tube 12 and within a pocket 20 within said frame 4, its upper end bearing against said; frame 5 and its lower end against an adjustable collar 21, which surrounds said tube 12. The tension of said springis adjusted by'means of a screw 22, which is mounted within said tube 12, its upper end being provided with a moo suitable head 23, which is adapted to rest on the upper end of said tube 12, and its lower end being threaded through a nut 24, mounted within said tube 12. The upper face of said nut 24 bears against the lower face of a crossbar 25, which fits loosely around said screw 22 and within said tube 12 and is provided with two diametrically opposite arms 26, which are adapted to project through two longitudinal slots 27 and 28 in the walls of said tube 12. Said collar 21 is provided with a gain or depression 28 in its lower surface to receive the upper portion of the arms 26 of said cross-bar 25 to prevent same from turning. Said tube 12 is prevented from turning, and thus moving said roller 10 out of its proper position in relation to roller 1, by means of apin or screw'29, which is mounted in said frame 4 and projects into said slot 27 in said tube 12. Said nut 24 is prevented from turning by means of a dowel-pin 30, connecting said nut and said cross-bar 25. In order to facilitate the raising of said roller 10 that the goods to be operated upon may be entered between the rollers, a shaft 31 is mounted in suitable bearings at the top of said arm 13, and a forked lever 32 is rigidly mounted on one end of said shaft adapted to bear on rounded projections 33, provided on the lower face of a collar 34, which is rigidly mounted on the upper end of said tube 12. The opposite end of said shaft 31 is provided with a long lever 35, by means of which said shaft may be partly rotated and said tube 12, withthe roller 10,lifted against the pressure of said spring 19. A plate 36 is provided which connects said frame 4 with the work-plate of the sewing-machine, covering said shaft 3 and making a smooth surface, over which the work being operated upon may be drawn. In order to prevent the cloth from being wound upon said roller 1, I provide the plate 5, which has an opening 37 adapted to fit closely around said roller, the roller projecting above the plate a small fraction of its diameter. Recesses 38 are provided in the longitudinal sides of said opening 37 to allow the teeth or pins 16 on said rollers 1 to pass freely.

I claim as my invention In a feeding device for sewing-machines, the combination with a frame, a roller journaled in said frame, means for revolving said roller, and projections on said roller adapted to engage the fabric after it has passed the needle of the sewing-machine, of means for yieldingly holding the fabric in contact with said roller, comprising a plunger vertically movable in said frame, above said roller, a U-shaped frame pivotally mounted on the lower end of said plunger, a second roller revolubly mounted in said U-shaped frame and adapted to bear on said first-mentioned roller, said second roller having a surface which is softer than the projections on said first-mentioned roller, and a spiral pushspring surrounding said plunger and adapted to normally hold same at the lower limit of its movement.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD F. WILSON. Witnesses:

RUDOLPH WM. LOTZ, B. C. TRUMAN.

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