US1824064A - Feeding mechanism - Google Patents

Description

Sept. 22, 1931.

F. ASHWORTH FEEDING MECHANISM Original Filed May 19, 1920 3 Sheets-Sheet 1 Sept. 22, 1931. s wo 1,824,064

FEEDING MECHANISM Original Filed ma 19, 1920 s Sheets-Sheet 2 Sept.22,1931. F. ASHWbRTH 1,824,064

FEEDING MECHANI S M Original Filed May 19, 1920 s Sheets-Sheet 3 Patented Sept. 22, 1931 STATES FRED ASHWORTI-I, OF BEVERLY, MASSACHUSETTS, ASSIGrITOlR. TO UNITED SHOE ML.-

GI-IINERY CORPORATION, OF PATTERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY FEEDING MECHANISM Original application filed. May 19, 1920, Serial No. 382,558. Divided and this application filed November 23,

The object of the lnvention is to simplify and improve the construction and mode of support and presser through the work.

A on the work support.

operation of feeding mechanism for sewing machines and more particularly to improve the construction and arrangement of the parts which move the work feeding devices in the line of feed. The several features of the invention are designed primarly for use in look stitch outsole shoe sewing machines and are herein illustrated and described as embodied in the lock stitch outsole shoe sewing machine fully disclosed in applicants pending application Serial No. 382,558, filed May 19, 1920, of which the present application is a division;

In the drawings illustrating tion to beunderstood, Fig. 1 is a right side elevation of the head portion of the machine; Figs. 2 and 8 are sectional plan views taken on the lines 2-2 and 3 -3 respectively of Fig- 1;*and'Fig. 4 is a detail sectional view of a portion of the work feeding mechanism taken on theline 4- 1; of Fig. 2,.

In the sewing machine-illustrated in the drawings, the work is fed by means of a work foot while the needle and awl are out of the work. At the completion of the feeding operation the awl'is actuated to pierce the work and as the awl retracts the needle closely follows the awl During the feeding operation and during the described movements of the awl and needle, the work is firmly clamped on the work support by the presser foot. At the limit of the work piercing stroke of the needle, the pressure of the presser foot on the work is relieved and the presser foot and work support are returned to their initial position whereupon the presser foot is again caused to clamp the work firmly As the needle is in the work during the back feeding or retraction of the work'support and presser foot, there is no danger of the work becoming dislodged by the work support and presser foot being dragged over the work, andthe needle is supported at this time a sufiicient portion of the machine to enable the lnven-' Serial No. 676,535. Renewed February 10, '1931.

by the needle guide which is advanced to a position in engagement with the work. When the work support and presser foot have been retracted and the presser foot is caused to clamp the work on the work support, the

loop drawing stroke of the needle is initiated. The construction of the work support and presser foot and their actuating mechanism is such that there is no danger of any back lash occurring even when these partsibecome worn with use. The feeding of the work by means of the work support and presser foot perm-its the awl and needle to be in alinementat all times so that there is no danger of the needle failing to accurately enter the hole made by the awl as frequently occurs in machines in which the awl is employed to feed "the work.

7 The work support is indicated at 2 and the presserfoot is indicated at 4: (Figs. 1 and 3). The work support is shaped as usual to enter the crease between the welt and the upper and to cooperate with an edge gage 6 to guide the work. The work sup 7 port is provided with the usual slot 8 through which the needle and awl work and through which a fudge or channel knife 10 for the welt extends. The work support is centrally former on a curved bar 12, the ends of which are secured to arms 1 f projecting forwardly from a work support carrier-16. The arms 1& are spaced a distance apart to permit the looper 20 and parts of the actuating mechanisms for the needle and awl to operate between them.

In order that the work support may be actuated to feed the work, the carrier 16 is pivotally mounted ona vertical pin 22 supported by the frame of the machine and spaced at a distance from the end of the work support. The forward end of the carrier 16 is sup-- ported by means vided with a flattened surface with which flattened surfaces formed on the under sides of the arms 14 are in sliding engagement. In order to move the presser foot 4 laterally with the work support to feed the'work, it is formed on the end of a lever 26 which is pivotally mounted on an upright bracket 28 projecting from one of the arms 14.

of a bracket 24 that is proengages a groove 36 in a relatively fixedblock 38, the groove 36 being at anan le to the groove 34. lVith this construction, it will be understood that by actuating the pivot pin 32 to move the blocks 30 longitudinally of the grooves a lateral feeding movement will be imparted to the worksupport and presser foot. The pivotpin'32 is actuated to impart the desired feeding move ments to the work support and presser foot by means of a link 40 on the forward end of which the pivot pin is formed. The rear end of the link 40 is pivotally connected to an arm 41 secured to the upper end of a vertical rock shaft 42 mounted in the frame. An arm 43 is securedto the lower end of the rock shaft 42 andis provided 'ith a cam roll which engages a groove in a cam disk 253 44 carried by a driving shaft 46 of the machine.

In order to adjust the length of the feed. the grooved block 38 is adjustable to vary the relative angular positions of the grooves 34 303 and 36. The block 38, is pivotally mounted by means of a stud 48 projectingfromthe top thereof engaging a socket bearing in the frame of the machine, and its rear endis pivotally connected to the bifurcated end 35;? of a sleeve 50. The other end of the sleeve as? rock shaft 64 mounted in the frame.

50 is split and embraces the-rear end ofa rod 52, the sleeve being securely clamped to the rod by means of abolt 54. The rod 52 is screw-threaded through a sleeve 56 mounted i} toturn in a bearing in the frame'and held fromlongitudinal movement by nuts 58 threaded on its inner end and by a pinion 60 secured to its forward end. Byturning the sleeve 56, the block '38 may be adjusted to 452 vary the length of the feed. In order that the operator may conveniently effect such adjustment of the block 38, the sleeve is adapted to be turned by means of a hand lever 62 .secured to the right hand end of a The connection between the sleeve 56 and the hand lever 62 comprises a gear segment 66 engaging the pinion 60, which gear segment is formed on the end of an arm secured to ithe rock shaft 64. Thegrooved block 38 is adapted to be adjusted independently of the hand lever 62 to vary the length of the feed. This may be accomplished by loosening the clamping'bolt 54 and turning the rod 52 in at the sleeve 56, a screw-driver slot being provided in the end of the rod for this purpose. The invention having been thus, described, what is claimed is i i i "l. A: sewing, machine having, in combina- Ition, stitch forming devices, work feeding means comprising a laterally movable work support, a presser foot cooperating therewith, and means for moving the work support laterally to feed the work comprising a member having a groove, a block moving back and forth lengthwise in said groove,

'means for moving said carrier to feed the work comprising a reciprocating member, a pair of blocks actuated by said reciprocating member, one of the block being mounted to slide in the groove in the carrier, and a memher having a groove extending angularly to he groove in the carrier and engaged by the other block.

3. A sewing machine having, in combination, work feeding means comprising a laterally movable work support having a groove, a presser foot cooperating with the work support, and means for moving the work support to feed the work comprising a reciprocating member, a pair of blocks actuated by the reciprocating member, one of the blocks being mounted to slide in the groove in the work support, a guiding member having a groove extending angularly to the groove in the work support and engaged by the other block, and means for adjusting the guiding member to vary the angular position of its groove. 7

4. A sewing machine having, in combination, work feeding means comprising a laterally movable work support having a groove,

a presser foot cooperating with the work support,.and means for moving the work support to feed the work comprising a reciprocating member, a pair of blocks actuated by the reciprocating member, one of the blocks being mounted to slide in the groove in the work support, and a guiding member having a groove extending angularly to the groove in the work support and engaged by the other block.

5. A sewing machine having, in combination, work feeding means comprising a pivotally mounted work support, a presser foot cooperating therewith, and means for moving the work support laterally about its pivotto feed the work comprising a member havin a groove inclined to the radius of the work support, a block working lengthwise in said groove, and connections between said block and work support for transmitting the lengthwise movement of the block to the work support. a

6. A sewing machine having, in combination, work feeding means comprising a pivotally mounted work support, a presser foot cooperating therewith, means for moving the work support about its pivot to feed the work comprising a member having a groove inclined to the radius of the work support, a block working lengthwise in said groove, and connections between said block and work support, and means for adjusting said grooved member to vary the inclination of its groove relatively to the radius of the work support.

7. A sewing machine having, in combination, work feeding means comprising a pivotally mounted work support, a presser foot cooperating therewith, means for moving the work support about its pivot to feed the work comprising amember having a groove inclined to the radius of the work support, a block working lengthwise in said groove, connections between said block and work support, a manually operable lever, and connections between the lever and said grooved member to vary the inclination of said groove relatively to the radius of the work support upon movement of the lever.

8. A sewing machine having, in combination, work feeding means comprising a pivotally mounted work support, a presser foot cooperating therewith, means for moving the work support about its pivot to feed the work comprising a member having a groove inclined to the radius of the work support, a block working lengthwise in said groove, connections between said block and work support, a manually operable lever, and connections between the lever and said grooved member to vary the inclination of said groove relatively to the radius of the work support upon movement of the lever, the connection between the lever and said grooved member having provision for adjustment to vary said inclination of said groove independently of the lever.

9. A sewing machine having, in combination, stitch forming devices, work feeding means comprising a laterally movable carrier having a groove, a stationary member having a groove set at an angle to the groove in the carrier, means engaging both grooves, and mechanism acting automatically during each stitch forming cycle of the machine to reciprocate said means in the grooves. to move the carrier laterally to feed the work.

10. A sewing machine having, in combination, work feeding means comprising a work support, a carrier for the work support pivotally mounted to permit a feeding movement of the work support, a presser foot cooperating therewith,a support for the carrier intermediate the pivot and the work support on which the carrier slides. and means for imparting a swinging movement to the carrier about its pivot to feed the work.

11. A sewing machine having, in combination, work feeding means comprising a Work support, a carrier for the work support pivotally mounted to permit a feeding movement of the work support, a presser foot mounted on the carrier to cooperate with the work support, and a support for the carrier intermediate the pivot and the work support on which the carrier slides.

FRED ASHVORTH.

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