US1189007A - Puller-machine. - Google Patents

Description

.0 s. SEYMOUR. FULLER MACHINE. APPLICATION FILED FEB. 10. 191-3.

I V PatentedJuneW, 1916.

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v PULLER MACHINE. APPLIATION'F1LED FEB. 10. 1913.

l 1 89,007 Patented June 27, 1916.

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DUDLEY S. SEYMOUR, OF OAK PARK, ILIIINOIS, ASSIGNOR TO UN ION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FULLER-MACHINE.

Specification of Letters Patent.

Patented June 27', 1916.

To all whom it may concern.

Be itknown that I, DUDLEY S. SEYMOUR,

a citizen of the United States, residing at Oak Park. in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Puller-Machines, of which the following is a description, reference being had to the accompanying draw ing andto the figures of reference marked thereon. M

The invention relates to new and useful improvements in puller machines which are adapted to be used in connection with a. sew ing machine, and which operate in unison with the feed of the sewing machine to exert an intermittent pull or feed on the material being stitched, in order to relieve the strain on the sewing machine feed when operating upon heavy materials.

The invention is an improvement upon the puller machine shown and described in my co-pending application, Serial No. 379,218, filed June 15, 1907. In the mechanism shown in the application referred to, the puller wheels are operated by a roller friction clutch, the rollers of which bear directly upon the surfaces of the clutch members. It has been found in practice that in a device of this character the rollers will at times wear grooves in the faces of the clutch members. which prevent the proper clutching of the parts so as to maintain a proper timing between the feed of the puller and the feeding of the sewing machine.

An object of the present invention is to provide a clutch mechanism which is so constructed that the clutching rollers rest upon hardened plates so as to avoid the objectionable wear above referred to.

In the drawings, which show by way of illustration one embodiment of the inventionzFigure 1 is a plan view of a puller and a sewing machine with which it cooperates, the view being taken directly above the work support, and parts being broken away in section to show the manner of operating the puller mechanism from the main shaft of the sewing machine; Fig. 2 is an enlarged detail partly in section and partly in end elevation showing the relation of the feeding mechanism to the puller wheels; Fig. 3 is an enlarged detail partly in section showing the main shaft of the puller mechanism 'and the clutch members for operating the same; Fig. 4 is a sectional view on the line as clearly shown in Fig. 2.

4, 4 of Fig. 3; Fig. 5 is a longitudinal sectlonal view through the clutch members;. Flg. 6 is a perspective View of one of the clutch members detached from its operating parts. I

I The puller machine to which my invention 1s appliedconsists of a work support 1, and

a standard 2 carrying an overhanging arm (not shown), both of which are carried by a supporting bed 3, which is adapted to be attached to and held in fixed relation to the supporting bed 4 of the sewing machine. The sewing machine is provided with a cloth plate or work support 5, and a standard 6 carrying the usual overhanging arm. The main. shaft 7 of the sewing machine is mounted in suitable bearings beneath the work support 5, and is operated from the belt wheel 8.

The sewing machine is provided with a feed dog 9, which is carried by the usual feed bar 10 pivoted to the feed rocker 11, which is oscillated from the main shaft 7' through an arm 12 which is pivotally connected to an eccentric strap 13, cooperating with the eccentric on the main shaft. This feed dog is raised and lowered by an eccentric 14: also carried by the main shaft 7. Cooperating with the main feed dog 9 is a presser foot 15, which is mounted in the overhanging arm carried by the standard 6. The stitching mechanism is indicated by the needles 16, and may be of any desired with an intermittently operated feed dog which acts to present the material to be stitched to the stitching mechanism.

The work support 5 of the sewing machine and the work support 1 of the puller machine are substantially on the same level, Mounted in suitable bearings beneath the work support 1 of the puller machine is a shaft 17 which carries a roller 18 having spaced projections 19. This roller 18 is so proportioned that the projections extend through a slot 20 in the work support 1, and engage the, lower face of the material passing over the work support 1. Cooperating with this roller 19 is a roller 21 which is mounted in a suitable roller .33 for each pocket or recess.

excess-of the effective feeding movement, of

the feed dog 90f the sewing machine.

As a means for intermittently rotating the shaft 17, I have provided a friction clutch. Rigidly fixed to the shaft 17 is av This sleeve is bored at the cen-' sleeve 25. ter part thereof so as to fit over the shaft and is locked thereto by set screws 26. At the sides of the center portion of the sleeve are formedenlarged cylindrical recesses 27 and 28. The driving clutch member 29 isin the form of a collar which freely engages the shaft 17, and is supported thereby. This collar at its inner end is formed with three spaced projections 30, the outer faces 31 of which are curved so as to fit freely Within the cylindrical recess 27 These projections are practically the same width as the depth of the cylindrical recess. A washer 32 fits the collar 29 and is fixed thereto. This washer is substantially of the same diameter as the sleeve 25 and serves to close the cylindrical recess 27. Between the projections on the collar 29 are cut-away parts forming pockets for the gripping roller 33. The flat surface. 34 of the projection 30, above which the gripping the face 34 by suitable screws 36. The roller 33 rests on this hardened plate. It will be understood that there is a recess or pocket between each of the projections 30 and a The other face 36 of the projection 30 is bored to form a pocket in which a spring 37 is "seated. This spring bears against the roller 33 and forces the same outwardly along the wear plate therefor. The operation of this driving clutch member will be apparent from Figs. 4 and 6. When the driving member or clutclrcollar 29 is moved in the direction of the arrow as shown in Fig. 4:, the roller 33 will at once move outwardly on the wear plate and be forced by the wear plate into gripping contact with the sleeve 25, and thus the sleeve 25 will be caused to move with the collar 29 in the direction of the arrow, as long as said collar 29 is moved in this direction. movement of the collar 29 in the opposite direction will cause the roller 33 to move inwardly on the wear plate and out of gripping contact with the sleeve 25. This collar 29 is rovided with an arm 38 which is clamped thereto, and projects downwardly beneath the shaft 17 The arm at its lower end carries a ball stud which is connected to a link 39. The other end of the link 39 cooperates with'an eccen tricon the main shaft 7 of the sewing ma chine, so that as said shaft is rotated the I projections on the collar 29, and said 001- lars are also provided with wear plates a1, similar to the wear plates 35, and with rollers 42, similar to the rollers 33. Thd

driving clutch and the holding clutch are similarly disposed and, therefore, when the driving clutch is moved so as to cause the rollers to move outwardly on the wear plates and to grip the sleeve and turn said sleeve, the rollers of the holding clutch will be moved inwardly along the wear plates therefor, and out of engagement with the sleeve,

and thus permit the sleeve to freely turn. NVhen the driving clutch is moved in the opposite direction, the rollers will be moved out of contact with the sleeve and any tendency of the sleeve to turn in a rearward direction will be prevented by the rollers of the holding clutch engaging the sleeve and preventing any movement of the sleeve, relative to the holding clutch. The holding clutch is fixedly secured to a bracket 43 by suitable screws 44, and the bracket 43 is secured to the base plate 1 of the puller machine by a suitable screw 45. The springs 37 which engage the rollers 33 and 42 force these rollers outwardly along the wear plates, so that the rollers are held in position to at once grip the sleeve when the driving clutch member is moved in the proper direction, or when there is any tendency of the sleeve to move rearwardly rela tive to the holding clutch, and, therefore, all false movements are prevented. These rollers rest are subject tolittle wear, and if there should be any wear on the surface contacting with the roller, the plates may be readily removed and reversed so as to bring the opposite face thereof into contact with the gripping roller.

\Vhen the pulling machine is used in connection with the sewing machine it is essential that the feed rollers of the pulling machine shall move in unison and in timing with the feed. of the sewing machine. It is preferred that this feeding movement of the puller shall be such as to exert a slight strain on the material passing through hardened steel wear plates on which the Y the stitching mechanism. Whenever timing of the parts may be desired, it is essential that this timing shall be maintained. If the puller should get out of timing with the feed of the sewing mechanism 'and the maoperating with the feed of'the sewing 'ma-.

chine in handling the fabric. For the above reasons it is absolutely necessary that the driving clutch and holding clutch for the puller shall be such that there is no lost motion in the parts. orfailure on the part of the clutch members to grip the member cooperating therewith at the proper time. The above construction of clutch, which includes the hardened wear plate, accomplishes this result.

From the above construction it will. be noted thatI have provided a clutch where in there are-three equally spaced rollers. Therefore, when the clutch members are inserted in the sleeve these rollers with the springs which force the rollers outward on the hardened plates, will'cause a self-centering of the clutch member in the sleeve.

This self-centering of the clutch does awaywith any fine adjustment which might otherwise be necessary to bring the parts into proper cooperative relation.

It is obvious that minor changes in the details of construction and the arrangement of parts may be made without departing from the spirit of the invention, asset forth in the appended claims.

" Having thus described my invention,

what I claim is: V 1. The combination of a sewing machine having a feeding mechanismiand a puller machine located in rear of the sewing machine, said puller machine having a feeding memberand means for operating the feeding member of the pulling machine, including a driving clutch and cooperating member. clutching devices located between the driving clutch and cooperating member, said clutching member having a hardened face on which the clutching devices rest. 2. The combination o a sewing machine having a feeding mechanism and a puller machinelocated in rear of the sewing machine. said puller machine having a feeding member and means for operating the feeding member of the pulling machine, including a driving clutch member, and a member cooperating therewith, clutching devices between the clutch member and the coopcrating member, said clutch member having hardened plates on which the clutching devices rest.

The combination of a sewing machine having a feeding mechanism and a puller machine located in rear of the sewing machine, said puller machine having afeeding member and means for operating the feeding member of the pulling machine,including a driving clutch member, and a member cooperating therewith. clutching devices between the clutch member and the cooperating member, said clutch member having hardened plates on which the clutching. devices rest, and means for securing saidwearing plates to the clutch members, whereby aid plates may be removed and reversed.

4. The combination of a sewing machine having a feeding mechanism, of a'pulling machine located in rear of the sewing ma chine, and having a feeding member, a shaft supporting the feeding member of the pulling machine, a shaft for operating the feeding mechanism of the sewing machine, and means for intermittently rotating the shaft of the pulling machine from the shaft of thesewing machine, including a sleevev fixed to the shaft of the pulling machine, a clutch member free on said shaft and extending into said sleeve, clutching rollers located between the clutch member and the sleeve, wear plates carried by said clutch member, on which said rollers rest, an arm rigidly attached to said clutch member, an eccentric on the shaft of the sewing machine, and 95 means for oscillating said arm from said eccentric. i

5. The combination of a sewing machine having a feeding mechanism, of a pulling machine located in rear of the sewing ma- 100 chine, and having a feeding member, a shaft supporting the feeding member of the pull ing machine, a shaftfor operating the feed 'ing mechanism of the sewing machine, and

-- to the shaft of the pulling machine, a clutch member free on said shaft and extending into said sleevc clutching rollers located between the clutch member and the sleeve, wear plates carried by said clutch member, on which said rollers rest, an arm rigidly attached to said clutch mcmljier, an eccentric on the shaft of the sewing machine, means for oscillating said arm from said eccentric; and means for preventing the shaft of the puller from turning in the opposite direction, including a holding clutch member extending into said sleeve, clutching rollers 110 between the holding member and the sleeve, wear platescarried by the holdingniember, on which the rollers rest, and means for preventing the holding member from turning with the shaft.

6. The combination of a sewing machine having a feeding mechanism, of a pulling machine located in rear of the sewing'maing machine, a shaft for operating the feeding mechanism of the sewing machine, and meansforintermittently rotating the shaft. of the pulling machine from the shaft of the sewing machine, including a sleeve fixed to the shaft of the pulling machine, a clutch member free on the shaft and extending,

. arm to said eccentric, whereby said arm is oscillated therefrom. i

7. The combination of a sewing machine having a feeding mechanism, of a pulling machine located in rearof the sewing -machine, and having a feeding member, a shaft supporting the feeding member of the pulling machine, a shaft for operating the feeding mechanism of the sewing machine, and means for intermittently rotating the shaft of the ulling machine from the shaft of the sewing machine, including a sleeve fixed to theshaft of the pulling machine,,a clutch member free on the shaft and extending into said sleeve, hardened plates'fixed to the clutch member within the sleeve, rollers resting on the hardened plates andadapted to grip the sleeve, springs normally pressing-the rollers into contact with the sleeve, an arm carried by the clutch member, an eccentric on the main shaft of the sewing machine, means for connecting said arm to said eccentric, whereby'said arm is oscil lated therefrom, and means for preventing said shaft of the puller from turning in the opposite direction, including a holding clutch member extending into said sleeve, hardened plates carried thereby within the sleeve, rollers resting on said plates, and

1 adapted to grip said sleeve, springs for forcing said rollers upwardly on the plates into contact with the sleeve, and means for preventing said holding member from rotating r In testimony whereof, I aflix my signature, in the presence of two witnesses;

DUDLEY S. SEYMOUR.

Witnesses:

C. MoNEIL, A. B. GLOTHIER.

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