US1284864A - Work-support. - Google Patents

Description

C. C. BLAKE.

WORK SUPPORT- APPLICATION FILED 05c. 30. 19:5.

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C. C. BLAKE.

WORK SUPPORT.

APPLICATION FILED DEC. 30 L915.

1,284,640 Patented Nov. 12, 1918.

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WORK SUPPORT.

APPLICATION FILED DEC-30,1915.

1,28%,M, Patented Nov. 12, 1918.

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I haw??? C. BLAKE WORK SUPPORT.

APPLICATION FILED 050. so

Patented Nov. 12,1918.

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WORK SUPPORT.

APPLICATION FILED 050.30. r915.

Patented Nov. 12; 1918.

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CHARLES C. BLAKE, OF BROOKLINE, MASSACHUSETTS, ASSIGNOR TO C. C. BLAKE, INCORPORATED, 013 BOSTON, MASSACHUSETTS, A CORPORATION OF NEW YORK.

woaK-surron'r.

Specification of Letters Patent.

I Patented Nov. 12, 19118.

Application filed December 30, 1915. Serial No. 69,375

To all whom it may concern:

Be it known that I, CHARLES C. BLAKE, a citizen of the United States, residing at Brookline. in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvement in Work-Supports, of which the following is a specificatlon.

The present invention relates to shoe machines and more particularly to automatic shoe machines for use in the manufacture of Blake welt shoes.

The object of the present invention is to provide automatic shoe machines with a work support of improved constructlon whereby the proper relation between the op erating tools and the work may be secured with but little care and skill upon the part of the operative.

To the accomplishment of this object, and such others as may hereinafter appear, the features of the invention relate to certain devices, combinations and arrangements of parts, hereinafter described and then set forth broadly and in detail in the claims appended.

The various features of the present invention will be best understood from an inspection of the accompanying drawings illustrating the best form of the invention at present advised, in which,

Figure 1 is a right side elevation of the machine;

Fig. 2 is a front elevation;

Fig. 3 is a plan of the jack attachedto the leader but removed from the machine;

Fig. 4 is a plan, partly in' section, of the leader and its associated parts;

Fig. 5 is a sectional elevation of the jack and its supporting, actuating and guiding mechanisms; and

Fig. 6 is a sectional elevation on the line 6-6, Fig. 5.

The machine illustrated in the drawings comprises a straight eye-pointedneedle 1, an awl 2, a gage 3, a pair of gages or feet 4, a looper 5, a knife or gouge 6 and a welt guide 7, all of which are supported on a slide 8 mounted to slide vertically in the machine head. The parts above briefly referred to are constructed and arranged in the same manner and operated by the same mechanism as the corresponding parts of the machine disclosed in application for Letters Patent of the United States filed by me of a chambered post 16.

convenience the shoe, is mounted upon a jack 9 (Fig. 5) having a spindle 10 and saddle 11. The spindle 10 is secured to a boss 12 (Fig. 3) formed on a plate 13 carried by two vertical plates 14 rising from a base 15. The saddle 11 consists of apad of yielding material mounted upon the upper end The post 16 is mounted on a standard 17 and is guided to slide vertically therein by a screw 18 which is arranged to engage a slot 19 formed in the post 16. The saddle 11 is normally held elevated by a coiled spring 20 which is interposed between the bottom of the standard 17 and the top ofthe chamber in the post 16. To permit the saddle 11 to be forced upwardly to jack the shoe the post 16 carries a rack 21 which, when the saddle is under the influence of the spring 20, registers with an opening 22 formed in the worm 23. This worm is mounted in a housing 24 on a vertical shaft 25 journaled in the standard 17 and is provided with a handle 26 by means of which the operative may engage the worm with the rack 21 and force the saddle 11 upwardly to jack the shoe. To permit the jack to accommodate different sizes of shoes the standard 17 is mounted to slide on ways 27 formed on the plates 14. The plates 14 are provided with a frame 28 (Fig. 3) projecting laterally on both sides thereof. The frame 28 is provided with a pair of runners 29 depending vertically therefrom. The runners 29 slide over the smooth upper surface of a platen 30 (Figs. 4 and 5). The platen is provided with a pair of dowel pins 31 arranged to engage sockets formed in the upper surface of a bracket 32 which is bolted (Fig. 1) to the leg frame 33 of the machine. The platen 30 is additionally secured to the bracket 32 by means of a pair of screws 34 (Fig. 4).

In order to automatically slide the jack over the platen to transfer the points of operation of the tools around the shoe the jack is secured to a leader 35 (Figs. 5 and 6) which has a. guiding flange 36 the internal periphe of which has the same contour order to permit the peripheries of the insole and the guiding flange of the leader to be vertically aline so that the projections of the edge of the insole curved laterally and longitudinally on the bottom of the jack upon the plane of the leader will coincide with the inside face of the guidin flange, the leader is provided with a pair 0 buttonhole slots 37 (Fig. 4) which receive headed bolts 38 (Fig 5) carried by the base 15 of the jack. With this construction the jack may be placed upon the-leader by passing the heads of the bolts 38 through the large ends of the buttonhole slots 37. The jack is then shifted on the leader until the edge of the insole is vertically alined with the inside face of the guiding flange. This movement of the jack brings the shanks of the bolts within the small ends of the buttonhole slots 37. To clamp the jack to the leader the ends of the shanks of the bolts are provided with pins 39 engaged by the opposite ends of a leaf spring 40 arranged to embrace the shanks of the bolts. The spring is bowed to exert clamping pressure on the bolts and thus clamp the jack by a trianlar cam 41 secured to a shaft 42 journaled 1n the plates 14 and actuated through a handle 43 (Figs. 2 and 3) carried by the shaft. The base 15 carries a pair of pins 44 which act as fulcrums for the leaf spring 40 during the bowing thereof.

The leader is actuated to transfer the point of operation of the tool around the shoe by a pin wheel 45 which engages a series of holes 46 (Fig. 6) bored in the guiding flange 36. The pm wheel 45 is secured to the upper end of a vertical shaft 47 journaled in bearings formed in. the bracket 32. The shaft 47 is driven from a horizontal shaft 48, (Figs. 1 and 5), one

end of which is journaled in the bracket 32 gears 52 (Fig. 1)

and the other end of which is journaled in a boss 49 suitably formed on a head 50 for the operating tools, through bevel gears 51. The shaft 48 is driven through bevel from a vertical shaft 53 journaled in the head 50. The shaft 53 is alternately driven and locked from movement by a mechanical movement 54 which is illustrated and described in Letters Patent of the United States No. 1,241,911, October 2, 1917.

In order to swing the jack laterally as the points of operation of the tools are transferred around the shoeto maintain the edge of the shoe insole in proximity to the tools in the line of feed, the guiding flange 36 on the leader .is engaged by a guide roll 55 (Figs. 4 and 5 arranged to engage inside the flange and y guide rolls 56 and 57 arranged to engage outside the flange. The uide roll 55 is carried on the upper end 0 a vertical pin 58 (Fig. 5) which is rotatably mounted on a bearing formed in the bracket 32. The pin 58 carries a plane surfaced sleeve 59 between the bracket 32 and a collar 60 on the pin, which is provided with a roll 61 embraced by a cam slot 62 (Fig. 6)' formed in a slide 63 slidably mounted in a bracket 32. The slide 63 is connected to an arm 64 projecting from a rock shaft 65 (Fig. 1) journaled in the leg frame 33. A second arm 66 projecting from the rock shaft 65 is provided with a handle 67 by means of which the -slide 63 may be actuated to cause the cam -shoe insole into the desired position with relation to the line of feed. In order to enable the rolls to engage the flange at all times without binding as they traverse the reverse curves of the flange at the shank and around the toe, the guide rolls 56 and 57 are journaled respectively, in arms 68 and 69 which are tied together by a pair of tie-pieces 70 and 71 (Fig. 5). The arms 68 and 69 reciprocate in guideways 72 (Fig. 6) formed in the frame 32 and are actuated in a direction to press the guide rolls 56 and 57 a ainst the flange 36 by means of a spring 73 loosely coiled around a, guiding pin 74 on the bracket 32 and interposed between the bracket and a tension ad usting screw 75 carried by a chamber 76 secured to the tie-piece 71. T0 withdraw the guide rolls 56 and 57 from the guiding flange 36 at the same time as the guide roll 55 is withdrawn therefrom the slide 63 is provided with a horizontal extension 77 (Figs. 4 and 6). This extension is provided with a cam slot 78 which embraces a roll 79 carried by the tie-piece 70. With this construction a downward movement of the handle 67 simultaneously depresses the guide roll 55 and withdraws the guide rolls 56 and 57 from the flange 36 against the tension of the actuating springs 73. It will be noticed from an inspection of Fig. 4 that the cam slot 78 is wide enough to permit the roll 79 to move freely therein as the guide rolls 56 and 57 yield to the curves of the leader; The movement of the slide 63 is limited in both directions by a pair of pins 80 and 81 (Fig. 4) arranged to alternately engage the opposite sides of the bracket 32. A

In order to permit the slide 8 to be ele vated into an inoperative position to permit the insertion and removal of the work with-' asaeea is loosely connected to the upper end of av rod 85 which is loosely connected at its lower end to a perforated lug 86 loosely mounted on the arm 66. With this construction the operative may by manipulation of the handle 67 simultaneously unclamp the jack and elevate the tools. To remove the weight of the handle lever 67 and its connected parts from the rod 85 so that the slide 8 may-.move freely vertically while adapting itself to the height of the work the arm 64 is connected to the leg frame 33 by a counterbalancing spring 87 (Fig. 1).

In one type of automatic shoe machine heretofore devised it was proposed to swing the shoe about the point of operation of the tool. This point varies with relation to the edge of the insole in the diflerent machines used in bottoming welt shoes so that a leader, which guided the work through an automatic inseam sewing machine in which the work swings about the point of opera tion of the tool at some distance inside the edge of the insole, is not adapted to guide the same work through the old type of automatic outseam sewing machine, or rough rounding,'or sole edge finishing machine, in all of which the work swings about an axis passing through the work at some distance outside the edge of the insole. I have discovered that by swinging the work about an axis coinciding with the edge of the insole, I can use the same leader in all the diflerent machines used to bottom a welt shoe as the variation between the point of operation of thetools, located both within and outside the edge of the insole, and the edge of the insole is not suficient to affect the different shoe operations. Stated in another way, I have discovered that if an axis, which passes through the work at a mean distance between the extreme positions ofthe paths of the tools used in the diflerent shoe bottoming operations, is selected, a single leader may then be used to guide the work through all the automatic bottoming machines.

It will be clear to those skilled in this art, and with the general objects of the present invention in view, that changes may be made in the details of structure, the described and illustrated embodiment thereof being in tended as an exploitation of its underlying essentials, the features whereof are definltely stated in their true scope in the claims herewith.

, What is claimed as new, is

tion, a leader, a work support carried thereby, and means permitting the support to be shifted on the leader to bring a contour on the work in alinement with a contour on the leader, substantially as described.

3. A work support, having, in combination, a leader, and a shoe supporting jack carried thereby and provided with runners extendin laterally of the jack, substantially as described.

4:. A work support, having, in combination, a leader, a shoe supporting jack carried thereby, a frame extending laterally on both sides of the jack, and a pair of runners vertically depending from the frame, substantially as described.

5, A work support, having, in combination, a leader provided with buttonhole slots. a shoe supporting jack carrying headed bolts arranged to cooperate with the slots in the leader and means for clamping the heads of the bolts against the leader comprising a leaf spring arranged to engage pins carried by the bolts, a cam plate arranged to engage the spring, and mechanism for actuating the cam plate to bow the spring to exert clamping pressure on the heads of the bolts, sub stantially as described.

6. The combination with an operating tool of a shoe supporting jack, a leader secured thereto and provided with a guiding flange, means for relativelyactuating the tool and jack to transfer the tool around the shoe, guides engaging said flange and cooperating therewith to swing the jack laterally as the tool is transferred around the shoe, and means for relatively actuating the guides in two planes to release the flange therefrom, substantially as described.

7. The combination with an operating tool of a shoe supporting jack, a leader secured thereto provided with a guiding flange, a pair of rolls arranged to engage the outside face of the flange, a slide for the rolls, a cam roll carried by the slide, and a second slide mounted transversely to the firstslide and provided with a slot constructed to permit movement of the cam roll therein when the second slide is in one position and to move the cam roll and the first slide when the second slide is moved into another position,-substantially as described.

8. The combination ith an operating tool of a shoe supporting jack, a leader secured thereto provided with: a guiding flange, means for relatively actuatingthe tool and the jack to transfer the tool around the shoe, guides engaging said flange and cooperating therewith to swing the jack laterally as the tool is transferred around the shoe, and means for separating the tool and the shoe and releasing the guides from the flange, substantially as described.

9. The combination with an opera-ting tool of a leader having, when positioned in the machine, a definite relation to the tool, a shoe supporting jack carried by the leader, and means permitting the jack to be shifted on the leader to bring the shoe insole into alinement with the leader, substantially as described.

10. The combination with an operating tool of a shoe supporting jack, a leader secured thereto and provided with a guiding flange, means for relatively actuating the tool and jack to transfer the tool around the shoe, a guide engaging inside the flange and a pair of guides engaging outside the flange cooperating with the flange to swing the ack laterally about an axis coinciding with the edge of the insole of the shoe mounted on the jack as the tool is transferred around the shoe, and means for lowering the inside guide vertically, substantially as described.

tively yielding guides cooperating with the flange to swing the jack laterally about an axis coinciding with the edge of the insole of the shoe mounted on the jack.

12. A work support comprising a flat leader having a depending guiding flange,

and a shoe supporting jack having an msole, curved laterally and longitudinally, thereon mounted on the leader, the rejections of the edge of the insole .on the p ane of the leader coinciding with the inside face of the guiding flange.

CHARLES C. BLAKE.

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