US1134036A - Guide for sole-sewing machines. - Google Patents

Description

G. L. CORGORAN & G. A. DOBYNE. GUIDE FOR SOLE SEWING MACHINES.

APPLICATION FILED JULY 11, 1911.

1,134,036, Patented Mar. 30, 1915.

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G. L. OOROO RAN & G. A. DOBYNE.

GUIDE FOR SOLE SEWING MACHINES.

APPLICATION FILED JULY 11, 1911.

1,134,036. Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

GEORGE L. CORCORAN AND GEORGE A. DOBYNE, OF ST. LOUIS, MISSOURI, ASSIGNORS T0 CHAMPION SHOE MACHINERY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORA- TION OF MISSOURI.

GUIDE FOR SOLE-SEWING MACHINES.

Specification of Letters Patent.

Patented Mar. 30, 1915.

To all whom it may concern:

Be it known that we, Gnonen L. CORGORAN and GEORGE A. DOBYNE, citizens of the United States, and residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Guides for Sole-Sewing Machines, of which the following is a specification.

This invention relates to shoe sewing machines, and particularly to that type known as welt outsole stitchers. In sewing welt shoes it is customary to run the line of stitches close to the sole edge when sewing around the fore part, and to run the stitches farther in at a greater distance from the edge when sewing along the shank. In some shoes the outside edge of the sole also projects a greater distance from the upper than the inside edge. In all cases however it is desirable to locate the seam at a uniform distance from the sole edge around the fore part, while at the shank the seam is located farther in. In present machines two guides are provided, one of these guides the shoe along the shank and the other guides the shoe along the fore part. The fore part guide is a sole edge guide while the shank guide engages the upper or the crease between the upper and welt. The sole edge guide is thrown completely out of the way when operating along the shank so that the shoe is at this time guided entirely by the crease guide. Due to irregularities in the upper and the inseam at the shank, the outseam is irregular and can not be accurately located in the channel in the outsole, thereby causing the stitches to show on the surface of the outsole when the channel flap is turned down and the sole leveled.

With the above in view, the objects of this invention are to construct work guiding means which will guide the shoe in order to accurately locate the seam; to combine the work guiding means with the stitch varying mechanism in such a manner that said means and mechanism may be controlled and operated independently or in unison; and to improve the mechanism as to details.

The invention will be described in connec tion with the accompanying drawings in which:

Figure 1 is a front elevation of an outsole sewing machine embodying this invention, Fig. 2 is a plan view, Fig. 3 is a section on the line 33 Fig. 1, Fig. 4: is a view similar to Flg. 3, but showing the guide in another position, Fig. 5 is a section on the line 55 Fig. 3, and Fig. 6 is a section on the line 66, Fig. 3.

In accordance with this invention the machlne is provided with a work table for supporting the sole at its edge. A guide is provided which engages the edge of the sole supported on the table, and this guide is adapted to continuously engage and externally guide the shoe during the sewing operation. The guide is arranged to be moved during the sewing operation to two positions, in one of these positions it guides the shoe along the shank, and in the other position it guides the shoe along the fore part. The shoe is thus continuously guided by the sole edge, and thus the seam can be located a correct distance from the sole edge whether operatmg along the shank or around the fore part.

In machines of this type, means are pr0- vided for varying the length of stitches, and it is customary to make the stitches longer along the shank than around the fore part. Both the stitches and the guide must be varied during the operation of sewing a shoe, and the operating mechanism must therefore be arranged so that it can be operated during the operation of the machine. It is however sometimes desirable to make the length of the stitches uniform all around the shoe. In accordance with this invention therefore, the operating levers for the guide and the stitch varying mechanism are so arranged that they can be operated independently or in unison.

The machine to which this invention is shown as applied is shown and described in application Serial No. 631,290, filed June 5, 1911. The machine may however be a well known form of outsole stitcher, such as is shown and described in Patent No. 473,870, granted April 26, 1892.

Referring to the accompanying drawings, 10 designates the machine frame which has mounted upon it a feed slide guideway 11.. A lug 12 on the machine frame supports the needle segment 13, its curved needle, and the table or work support 1 1 which has a slot for the awl and needle. A feed slide 15 is supported to slide in the guideway and is provided with a vertical post 16 for pivotally supporting the usual awl segment 17 and its curved awl. A forwardly extending bracket 18 forms a pivot bearing for the actuating lever 19 which is provided with a segmental. guideway. A link or lever 20 is pivoted at one end to a block 21 mount ed in the post 16, and is provided at its other end with a block 22 sliding in the guideway in the actuating lever. The block21 is slid ably mounted in the post 16, -a'ndis arranged to be adjusted thereinby means of the adjusting shaft'23 having-an eccentric pin 119 engaging a slot 1 18 in the block, and the block i-s'loc'ked in position by means of the locking pin 24. Both of the adjusting and locking devices extend forwardly so as to be accessible for adjustment from "the front of the machine, as'fully described in United. States Patent N 0. 1,032,303, granted July 9., 191-2. The link 20 is provided with a handle 25 "extending over the actuating lever 19 so that the block 22 may be adjusted in its guideway to vary the length of the stitches. The actuating lever is provided with a plurality of holes adapted to receive pins or stops 26 "arranged to arrest the handle and the block in adjusted position. The usual Presser-foot is shown at 27. The construction so far described is fully shown and described in the application referred to, to which reference is had for the details of construction.

j The post 16 is machined to form a horizontal-'guideway 30 for a slide'or guide carrie'r'3 l. This slide has an upwardly extending arm 32 provided with a guide member 33 'which extends over and upon the upper f'ac'eof the work table 14. The slide 31 is provided with a slot 34 which receives a pin 35 screwed into the post, and a friction washer 36 is mounted upon this pin and bears against the outer face ofthe slide to frictionally hold thesame in adjusted position. The lug 37 forming the upper face of the gui'deway is bored to receive a pin or stop 38 which is provided with a threaded and slotted head 39 so that thestop may be adjusted in the lug. This stop is arranged to be engaged by a lug 40 formed on the 'slide'31to locate the slide and its attached "guide'i'n one of its positions. A second stop 41 slot-ted at its forward end, is threaded into the slide 31, and is provided with a lock nut 42. This stop is arranged to cooperate with the front face of the post 16 to locate the slide and its guide in another position. 'The slide 31 is provided with a rack 43 arranged to mesh with teeth 44 on a lever 45 pivoted at 46 upon the pivot bolt 47 for the link 20. The lever 45 is provided with a handle 48 located above and adjacent to the handle 25 but slightly shorter.

The guide 33can be moved to any desired position by means of its operating lever 48. The'stops 38 and 41 are arranged to posi- -ently adjusted bya'djustingthe stops. The

friction washer36 is arranged to 'frictionally hold the slide 31 and the guide 33 mounted thereon-in its forward position. The tension of this washer can be made suflieiently great to accomplish this, since the leverage ofhandle 48 is great enough to enable the slide to beea'sily shiftedfeven though the resistance to movement offered by the washer is great. It will also be noted 'thatthe guide 33 isat a considerable dist'ance above the guideway "30 so that any pressure exerted thereon will cause "binding of the "slide in its guide'w'ay and thusfserve to p'revent retrograde movementof the 'guide. It -will thus'be seen that the guide can be shifted to two positions with respect to the stitch-forming mechanism, =a 'nd tha t the guide 'will be maintained and held in-either o-f said positions. The two positions are illustrated in Figs. 3 and 4.

I In theoperation of sewing a shoe the projecting "edge of the welt is supported-upon the table 14. When starting to sew along the shank the guide is thrown back 'to the position shown in -Fig. '4, by moving the lever 48 forwa rd-ly from the position shown in Fig. 2 "until the stop 41 arrests its movemerit. The shoe is then guided by the guide engaging the sole edge of "the shoe. WVhen sewing around the fore part, the lever 48 will be moved ba'ck'to the posit-ion shown in 'Fig. 2- so as to "bring the slide up against the stop 38 to locate the guide in-its forward position ass'howvn in Fig. 3. At this time tlie shoeavi-l l also be guided by its-sole edge. It will therefore be seen thatthe sole edge guide -'continuously engages and externally guides the shoe during the sewing operation performed upon the entire shoe, and that this guide is thrown "to its two positions when operating along the shank 'and around the fore part respectively. V] hen operating along the shank the guide is thrown back so that the seam can be located farther in from'the edge, while when operating around the fore part the seam is located closer to the-edge.

As pointed outit is sometimes desirable to lengthen the stitches when sewing along the shank. In order 'to lengthen the stitches the handle 25 is 'pulled forward against the forward stop -26. 'It WVlllEL'lSO be noted that in orderto t'hrow the-guideback when sewing along the shank the handle '48 is also pulled forward. In vie'w'of the fact that the hanclles'25 and 48 are located adjacent and one above the othenthe operator can move both in unison and with one hand in order to adjust both the stitch varying mechanism and the guide. The handles may how- "ever be moved independentlyfto independently adjust the stitch varyingmechanism and the guide. g

It will thus be seen that the invention accomplishes its objects. Since the shoe is guided continuously during the sewing operation by the sole edge guide, the seam may be located a correct distance from the sole edge, whether sewing along the shank or around the fore part. The line of stitches may therefore be accurately located in the channel formed in the outsole, so that when this channel is laid there will be no undesirable hump of the line of stitches appearing on the outsole. The adjustable stops provide means for adjusting the seam with respect to the sole edge for individual shoes, and these adjusting means as well as the adjusting devices for the feed slide are accessible from the front of the machine so that it is not necessary to use a wrench in the crowded space adjacent the feed slide. The guide 33 is located and positioned by stops on and engaging the slide or guide carrier 31. By locating the stops in the manner described, the guide will always be located accurately irrespective of lost motion between the operating lever 45 and the carrier, which is not the case if the stops cooperate with the lever. It will be noted that the adjustment of the block 21 will slightly vary the lost motion, but this has no effect upon the adjustment of the guide carrier since the stops cooperate with the guide carrier itself.

It is obvious that various changes may be made in the details of construction without departing from this invention, and it is therefore to be understood that this invention is not to be limited to the specific construction shown and described.

Having thus described the invention what is claimed is:

1. In a sole-sewing machine, the combination of stitch-forming mechanism, a table adapted to receive upon it and externally support the projecting edge of the welt of a lasted shoe, a sole edge guide adapted to con tinuously engage and externally guide the shoe during the sewing operation, said guide being movable during the operation of the stitch-forming mechanism to one predetermined adjusted position to guide the shoe, by engagement with its sole edge, along the shank, and movable to another predetermined adjustable position to guide the shoe, by engagement with its sole edge, around the fore part.

2. In a sole-sewing machine, the combination of stitch-forming mechanism, a table adapted to receive upon it and externally support the projecting edge of the welt of a lasted shoe, a sole edge guide adapted to continuously engage and externally guide the shoe during the sewing operation, said guide being movable during the operation of the stitch-forming mechanism to vary the position of the shoe with relation to the stitch-forming mechanism, and two adjustable stops adapted to adj ustably position the guide when sewing along the shank and around the fore part respectively.

8. In a sole-sewing machine, the combina tion of stitch-forming mechanism, a table adapted to receive upon it and externally support the projecting edge of the welt of a lasted shoe, a feed slide, a guide mounted on said slide and adapted to engage and externally guide the shoe during the sewing operation, operating means for said slide, and means for positioning said guide in two positions, said operating and positioning means having forwardly extending operating heads so as to be adjustable from the front of the machine.

4. In a sole-sewing machine, the combination of stitch-forming mechanism, a table adapted to receive upon it and externally support the projecting edge of the welt of a lasted shoe, a feed slide, a gage slidably mounted upon and movable with said slide and adapted to engage and externally guide the shoe during the sewing operation, and stops on said feed slide adapted to position said gage in two positions on said feed slide.

5. In a sole-sewing machine, the combination of stitch-forming mechanism, a table adapted to receive upon it and externally support the projecting edge of the welt of a lasted shoe, a sole edge guide adapted to continuously engage and externally guide the shoe during the sewing operation, said guide being movable during the operation of the stitch-forming mechanism to vary the position of the shoe with relation to the stitch-forming mechanism, a stop adapted to position the guide in one predetermined adjusted position when sewing along the shank, a second stop adapted to position the guide in another predetermined adjusted position when sewing around the forepart, and means for holding the guide when positioned by said second stop.

In testimony whereof we affix our signa' tures in presence of two witnesses.

' GEORGE L. CORCORAN.

GEORGE A. DOBYNE. Witnesses:

J. V. MANNING, J. H. BRUNINGA,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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