US1846350A - Rotary sole laying machine - Google Patents

Description

Feb. 23, 1932. c. L. M OYER 1,846,350

ROTARY SOLE LAYING MACHINE Filed Oct. 21, 1929 4 Sheets-Sheet l V57 243g 6%ar 661i:- yer J Feb; 23, 1932.

C. L. MQYER ROTARY SOLE LAYING MACHINE Filed Oct. 21, 1929 4 sneets sheet 2 5 11 g- B t I 1 b l I I I 1 1 ,LH I

1/5 57 aMesii fi yer C. L. M OYER ROTARY SOLE LAYING MACHINE Filed Oct. 21, 1929..

4 Sheets-Sheet 5 Feb. 23, 1932. c. L. MOYER 1,846,350

ROTARY SOLE LAYING MACHINE Filed Oct. 21, 1929 4 ShGGtS-Shfit 4 T1 V I %55 29\ 27 as 6 WW Patented Feb. 23, 1932 UNITED STATES PATENT OFFICE CHARLES L. MQ'YER, OF CHICAGO, ILLINOIS, ASSIGNOR TO QUALITY HARDWARE AND MACHINE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS ROTARY SOLE LAYING MACHINE Application filed October 21, 1929. Serial No. 401,050.

My invention relates to solo laying machines, particularly to that type in which pressure units or structures are carried with a rotary table through fields of operation.

In general, the object of the invention is to simplify the construction and operation of the machine and to reduce the cost of manufacture. More in detail, one of the important objects is to provide an arrangement in which a jack structure for each unit is reciprocable vertically above a pad structure, together with toggle mechanism above the jack structure for exerting powerful downward pressure against the jack structure when a shoe upper thereon is to be forced against the pad for applying a sole thereto.

Another important object is to provide an improved mechanism for functioning, during rotation of the carrier with the units, to move the toggle mechanism into pressure applying position or to relax them.

A further object is to provide cam extensions on the toggle mechanism for cooperating with stationary abutments during travel of the carrier to efi'ect extension or relaxation of the toggle mechanism.

A further object is to adapt the jack structure for easier and speedier removal therefrom or application thereto of the lasted uppers to which soles are to be applied, the heel pin in my improved arrangement being adapted to swing transversely relative to the jack structure so that it may assume a forwardly swung position to facilitate the application thereto of the upper supporting last.

Another important object is to provide a yieldable link in the toggle mechanism for each unit so that the pressure applied to the jack structure will be powerful but yielding.

Another important object is to reduce to a minimum the number of parts in the machine and to so construct them that they may be readily assembled and adjusted, or removed for repairs.

The above and other features of my invention are incorporated in the machine disclosed on the drawings, in which drawings Figure 1 is afront elevation of the machine,

Figure 2 is a side elevation,

Figure 3 is a plan view,

Figure t is an enlarged section on line IVIV of Figure 1,

Figure 5 is an enlarged section on line V-V of Figure 2,

Figure 6 is a section on line VI-VI of Figure 5, and

Figure 7 is an enlarged front elevation of the upper end of one of the jack supporting rames.

As shown on the drawings:

Tie machine comprises a supporting base or pedestal 1 upon which rises a vertical post or shaft 2. Receiving the shaft 2 at its axis is the work supporting bed plate or table 3 which may be cylindrical and which has a supporting hub 4t resting on the pedestal to be rotatable thereon. A bevel gear 5 is secured on the hub and the hub has strengthening ribs 6 on its lower sides. A supporting bracket 7 secured to the pedestal journals a horizontal. shaft 8 at right angles With-the pedestal axis, and another horizontal shaft 9 below the shaft 8 and at right angles therewith. The shaft 8 carries a worm wheel 10 and the shaft 9 carries a worm 11 and a pulley 12, the worm 11 meshing with the worm wheel 10. The pulley 12 is connected by a belt 13 with the driving pulley 14 of a suitable motor 15. At its inner end, the shaft 8 carries the gear 16 which meshes with the gear wheel 5, so that, when the motor operates, the table 3 will be rotated slowly by virtue of the Worm and worm wheel reduction gearing.

Generally speaking, the sole laying apparatus comprises a plurality of sole laying structures or units space-d on the table 3 around the axis thereof. Each unit comprises a pad structure and above it a jack structure which is vertically reciprocable toward and away from the pad. The jack structurereceives a lasted shoe upper and a sole which is to be cemented to the upper under pressure. Toggle mechanism supported above each jack structure and connected therewith is first cammed into one position to apply the jack structure to the pad under pressure and at a later period in the operation of the machine is released to allow the soled upper to be withdrawn from the raised jack structure.

The jack structures are operated consecutively, and successively come into position in front of the operator at one side of the machine for the removal therefrom of a finished 3' ob and the application of new work thereto.

There may be any number of sole laying units, the drawings showing four such units A, B, C and D spaced 90 apart. The units are alike and each comprises a rectangular box or holder 17 for a suitable pad structure 18 which is shaped to conform with the shape of the shoe bottom to which a sole is to be cemented. Formed integral with or otherwise secured to the table 3 is the sleeve or hub 19, which receives the shaft 2 extending from the pedestal 1. Near its upper end, the sleeve 19 has four radially extending arms 20, one vertically above each of the pad holders 17. Between the sleeve 19 and each of the pad holders 17 a vertical supporting and guide frame 22 is seated on and secured to the table 3. Each of these frames has a vertical rectangular groove 23 in its outer side overi laid by retainer plates 24 to form a T-shaped guideway, as clearly shown in Figure 7. The retainer plates may be detachable. This guideway receives and confines the rectangular guide head 25 at the inner end of a horizontal shaft 26 which supports the jack structure and guides the vertical reciprocation thereof.

Each jack structure comprises a body 27 having the base flanges 28 and 28 at its ends,

the flange 28 being a distance higher than the flange 28. The body 27 has a transverse pivot opening 29, as best shown in Figure 5, for receiving the shaft 26 on the guide head 25. Each jack body carries a toe post 30 and a frame 31 for supporting the heel pin 32,

the post and pin engaging respectively with the toe and heel of the upper supporting last carried by the jack.

Each toggle mechanism comprises upper I and lower link structures T and T pivoted together by a pin 33. Each upper link terminates at its upper end in a hub 34 receiving the stub shaft 35 extending radially from the respective arm 20 on the sleeve 19. Re

fering particularly to Figure 4, the lower toggle link T comprises the upper and lower members 36 and 37, the member 37 having a spring pocket- 38 into which telescopes the lower end of the upper member 36, the compression spring 39 in the pocket being interposed between the members and extending into the recess 40 of the upper member. Pins 41 threadedly engage in the opposite side walls of the lower member 37 and extend into vertical slots 42in the adjacent walls of the upper member 36, to thereby limit the relative movement of the members. The spring 39 is preferably of such original length that, when the members are interlocked by the pins, the spring will be given an initial compression, the reaction of said initial compression tending to always hold the link members extended.

The upper end of the link member 36 is bifurcated to receive the lower end of the upper link T, the bifurcation walls having the openings 43 for receiving the pivot or hinge pin 33. The lower end of the link member 37 is also bifurcated to straddle and receive the jack body 27, and the bifurcation walls have openings 44 for registering with the opening 29 of he jack structure and for also receiving the stub shaft 26 already referred to hereinbefore. The jack body and the lower link ofthe toggle structure are thus adapted to rock on the shaft 26 independently of each other. When a toggle structure is swung to bring its members into vertical alinement, or nearly so, as shown in Figure 2, its spring 39 will be further compressed, and the shoe supported on the jack structure will be pressed against its pad 18, the pivot or hinge connection on shaft 26 permitting the jack body to rock and to uniformly distribute the pressure against the shoe upper supporting last, so that the sole will be uniformly and securely cemented to the shoe bottom. \Vhen the toggle structure is relaxed, as shown in Figure 1, the associated jack structure is held in its upperposition by means of a spring 45 which encircles a rod 46 extending upwardly from the corresponding guide head 25, the spring abutting against the top of the bracket structure 22 and a washer 47 adjustably held on the rod 46 by nuts 48. i

The hub 34 of each upper toggle link Thas two cam arms 49 and 50 extending therefrom in opposite directions. Each arm extends in the arc of a circle centered at the axis of the post 2, the arc radius of the inner arm 49 being less than that of the outer arm 50. The arms 49 and 50 are respectively in the paths of cam rollers 51 and journalled at the ends of the arms 53 and 54 extending from a hub. 55 rigidly secured to the upper end of the post 2. The supporting table 3 rotates in the direction of the arrow indicated in Figure 3. The arms 53 and 54 supporting the cam rollers 51 and 52 are spaced apart, as shown on the drawings, and, when the table revolves, the cam arms 49 of the ack units will be brought successively into cooperation with the cam rollers 51 and the cam arms 50 the machine stands at thev side thereof in front of the cam roller arms 53 and 54., the drawing then showing unit A in front of the operator. The cam arm 49 of the toggle mechanism at this unit has com pleted engagement with cam roller 51 and the upper toggle link was by such engagement swung toward the right to relax the toggle mechanism, and spring -15 has raised the released jack structure. The operator applies to the jack structure a last with the shoe upper thereon and applies and temporarily holds to the bottom of the upper a sole S to which cement has been applied. As the table 3 continues to revolve, the cam arm 50 will come into engagement with the cam roller 52 and the toggle links will be swung into alignment and thereby shift the jack structure to carry the supported shoe with strong but yiehling pressure against the pad 18 by virtue of the spring 39 in the lower toggle link. The engagement of the cam arm 50 with the roller 52 is gauged so that the toggle links will be swung a short distance beyond the vertical line through the link pivot centers 35, 33 and E26, stop lug 7 9 on the lower end oi. link T then engaging with the link T to hold the toggle mechanism locked after the cam arm leaves the roller. The toggle structures are thus self-locking to maintain the jack pressure.

The cam arms have each approximately extent and, referring to Figures 1 and 3, the cam arm at station A will not encounter the cam roller 52 until the table 3 has rotated about 415, and then during the apply another shoe for a sole applying open ation.

After the table has rotated 90, the toggle structure at station A will be in pressure ap,

plying position and will have reached the position which the unit B now occupies on the drawings. he toggle structure will remain in locked pressure applying position for the next 180 rotation of the table and until its cam arm 49 comes into engagement with the cam roller 51, the cam rollers be ing spaced 90, as already explained. After 270 rotation from the starting point in front of the operator, the conditions at unit A will be the same as those now indicated on the drawings for unit D, the cam arm 49 just coming into engagement with the cam roller 51. As the cam arm travels against the cam roller 51, the toggle links will be swung to the right through and beyond the neutral line and the spring 39 will then throw the toggle open and the associated spring 45 will raise the released jack, and in this condition the unit A returns to its starting position. The operator withdraws the finished shoe from the raised jack and applies another thereto. The other units B, O and D follow the same cycle of operation justdescribed in connection with unit A. As the units reach the operator their toggle structures are released and the jacks raised for the removal of a finished shoe and the application of another shoe and, as the units travel away from the operator, the toggle structures are summed into pressure position, and the clamped shoe is carried around approximately 180 and, during such time, pressure is maintained on the sole and the sole is securely and permanently cemented to the upper. The shoes with the soles cemented thereto are then taken to a trimming machine and eventually to a sewing machine, where the soles are permanently sewed to the insole of the upper.

The toe post 80 has a T channel 56 in its upper end for receiving the base 28 of the jack body, so that the post may be ad justed longitudinally on the jack body. At its lower end, the post may journal a roller 57 or other abutment arrangement for engaging with the toe part of the lasted upper during application of pressure by the toggle mechanism. Referring particularly to Figures 5 and 6, the heel pin supporting frame 31 has a T channel 58 in its upper end for receiving the base 28 of the jack body, in order to be adjustable longitudinally thereon. The frame 31 has depending transverse walls 59 and 60 between which engages the block 61 having the cylindrical pocket 62 for receiving the heel pin 32. The pin has the longitudinal bore 63 in its upper end for receiving a compression spring 64 which tends to push the pin outwardly, such outward movement being limited by a pin 65 threaded through the block 61 and engaging in the channel 66 in the side of the pin. The outer end of the heel pin is tapered in order that it may readily enter into the heel hole of the last to be applied to the jack structure.

In order that the heel pin may swing forwardly toward the operator to facilitate the application and removal of lasts to and from the jack structure, the pin supporting block 61 is pivoted on pins 67 and 68 extending through the walls 59 and 60 and engaging in the openings 69 in the pin supportingblock, the pivot pins being locked in position by set screws 70. A latch pin 71 is pressed by a spring 72 against the side of the block 61 and, when the last engaging pin is vertical, the pin will engage in the depression 73 formed in the block 61 and will tend to hold the block in vertical position, as clearly shown in Figure 6. To assist in aligning the pin block 61 in vertical position, an abutment post 74 is provided on wall 60 against which the pin block will abut when the block is rotated rearwardly from forwardly inclined position, as shown in Figure 5.

To facilitate adjustment of the toe post and heel pin supporting frame on the jack structure, they are connected respectively by links and 76 with a cross link 77 secured to a shaft 78 extending transversely of and journalled on the jack structure body.

Briefly summing up the operation of the machine, the station of the operator is at the side of the machine in front of the cam rollers. If the unit A which is shown at said station has a last with an upper thereon to which a sole has been cemented, the operator swings the last forwardly and removes the last with the upper, the pivoted heel pin block readily permitting such forward swing. He then applies another last with an upper thereon to the heel pin with the pin just partly inserted in the last heel hole. He also holds against the bottom of the upper a sole S which has had cement applied thereto, and he then swings the last structure into vertical position with the sole against the pad 18, the weight of the last then holding the sole in place ready for the final cementing pressure. During the first 45 travel of the unit A from its loading point, the toggle mechanism will be inoperative, but during the next 45 travel, and up to the point, the cam arm 50 will be in cooperation with the cam roller 52 to operate the toggle mechanism to shift the jack downwardly to first fully apply the last to the heel pin and then to exert full pressure. When the toggle mechanism is forced across its neutral line, the stop lug 79 on the upper link of the toggle mechanism engages with the upper wall of the lower link, and the toggle mechanism is securely locked in pressure applying position.

lVhen the unit A has reached its 90 position, its cam arm 50 will have left the cam roller 52, and, as the unit travels through the 180 position and into the 270 position, there will be no change in its condition, but the toggle mechanism will remain in locked position to hold the shoe firmly pressed against the pad to give the sole a chance to be firmly set and cemented in position.

At the 270 point, the conditions will be as indicated in connection with the unit D on the drawings, the cam arm 49 being ready to cooperate with the cam roller 51, this cam roller being 45 in advance of the 270 position. During the next 45 travel of the unit A from the 270 position, the cam arm 49 engages the roller 51 and the toggle mechanism will be unlocked and moved beyond the neutral line until the spring 39 becomes effective to swing the toggle links into open position, and the associated spring 45 will then raise the released jack structure with the finished work thereon. During the next 45 travel of the unit A, back to its starting position at the operators station, the jack structure will be raised and the operator has this additional time for removing the finished work and applying another shoe upper and sole to be cemented thereto. As before stated, the jack remains in-eleva-ted position until the cam arm 50 encounters the cam roller 52, so that, during substantially 90 movement of the table 3, the jack structure is up and the operator effects his manipulation to unload and reload the particular unit. The operation of all the units is precisely the same, the units coming successively within the operators range to be unloaded and reloaded. When a unit has traveled from the reloading position to the 90 position, its toggle mechanism will have applied full pressure to the jack, and such full pressure is maintained for 180 travel and until the 270 position has been passed and the toggle mechanism released, the unit being then returned to the starting position for unloading, and then reloading.

The laterally rockable jack body and the forwardly swingable heel pin enable the operator to very readily and quickly apply the lasted uppers below the toe post and to the heel pin, or to remove a finished work.

At the upper end of each supporting frame 22 is a set screw 80 forming an abutment for the head 25 which carries the jack structure. By means of this screw adjustment can be made for the height of the jack structure, and consequently the last heel pin, above the pad when the jack is raised for loading, so as to insure sufiicient entry of the heel pin into the last hole to hold the last in position ready for the application of pressure.

The machine which I have shown and described is of simple design and construction. The number of parts has been reduced to a minimum and they can be quickly assembled and adjusted, or removed for repairs.

The toggle mechanisms apply powerful but yielding pressure to the work and automatically lock themselves to maintain the pressure during travel of the units around the machine.

It is, of course, understood that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles and scope of the invention, and I do not, therefore, desire to be limited to the exact structure shown and described.

I claim as my invention:

1. In a sole laying machine, the combination of a supporting frame, a pressure mechanism comprising a pad member and a lastsupporting member, a toggle pivoted at its outer end on the supporting frame and at its inner end to one of said members, cam arms extending laterally in opposite directions from the upper end of said toggle, and means for engaging with one of said arms to cause swing of the toggle links into pressure posi-' tion to thereby bring said members into pressure engagement and for engaging with the other cam arm to swing the toggle links into pressure releasing position.

2, In a sole laying machine, the combination of a supporting table, a pressure pad on said table, a supporting frame on said table, a last-stuaporting jack structure vertically reciprocable on said frame above said pad, a toggle connecting at its lower end with said jack structure and pivoted at its upper end 011 said supporting frame, cam arms extending laterally in opposite directions from the upper end of said toggle, and means for successively engaging with said cam arms to first swing said toggle to shift said jack structure into pressure applying position relative to said pad and then to return said toggle to relaxed position to raise the jack structure away from said pad.

3. In a sole laying machine, the combination of a supporting frame, a pressure pad on said frame, a support guided on said frame for vertical reciprocation above said pad, a last-supporting jack structure carried by said support, a toggle having pivotal connection at its lower end with said support and at its upper end being pivoted on said frame, cam arms extending in opposite directions from the upper end of said toggle, and means cooperable with said cam arms to operate said toggle, cooperation of said means with one of said arms resulting in setting of the toggle to pressure position to thereby shift said support downwardly to bring the jack structure into pressure cooper ation with the pad, and the cooperation of said means with the other cam arm causing swing of the tog le into relaxed position to permit separation of the ack structure from the pad.

4. In a sole laying machine, the combination of supporting framework, a pressure pad mounted on said framework, said frame work having a vertical guide channel, a head reciprocable in said channel and having a shaft extending therefrom, a jack structure supported on said shaft to reciprocate with said head above said pad, a toggle pivoted at its upper end to said framework and connected at its lower end with said shaft, cam extensions at the upper end of said toggle, and means for cooperating with said cam eX- tensions to cause movement of said toggle to force said i ack structure toward said pad and to release said jack structure for separation from said pad.

5. In a sole laying machine, the combination of supporting framework, a pressure pad mounted on said. framework, said framework having a vertical guideway, a head slidable in said guideway, a shaft extending from said head, a jack structure receiving said shaft whereby to move with said head and to be rockable on said shaft, a toggle recelving said shaft at its lower end and pivoted at its upper end to said framework, cam arms eX- tending laterally in opposite dlrections from the upper end of said toggle, and means coaway from the other member, one of the links of said toggle comprising two members separated by a compression spring whereby the pressure exerted by said toggle will be yielding, and cam mechanism for operating said toggle.

7. I11 a sole laying machine, the combination of a pad member and a jack member, means for causing relative movement of said members, a toe post on said jack member, a last-engaging heel pin 011 said jack member, yielding means tending to shift said pin axially outwardly, and means permitting swing of said pin in a direction transversely of said jack member whereby to facilitate the application of a last to said pin.

8. In a sole laying machine, the combination of a supporting structure rotatable on a vertical axis, a plurality of sole laying units on said supporting structure, a pad for each unit, a jack above each pad, a support for each jack .reciprocable vertically on said supporting structure, a toggle for each unit connected at its lower end with said support and pivoted at its upper end to said supporting structure, and actuating mechanism comprising lever extensions on each toggle and stationary abutments, said mechanism being operable during rotation of said supportingstruc ture with said units to successively actuate said toggles to shift the corresponding jacks toward their pad and to withdraw them therefrom.

9. In a sole laying machine, the combination of a stationary supporting structure, a Carrier mounted on said supporting structure for rotation on a vertical axis, a plurality of sole laying units supported on said carrier,

each unlt comprising a pad, a jack reciprocable on said carrier above said pad, a toggle connected with said jack and with said carrier and cam arms extending laterally from the upper end of the toggle, and stationary cam abutments on said supporting structure adapted during rotation of said carrier with said unit to cooperate with said cam arms to effect pressure applying operation of said toggles and relaxation thereof.

10. In a sole laying machine, the combination of a stationary supporting structure, a

carrier mounted on said structure for rotation on-a vertical axis, a plurality of sole laying units on said carrier, each unit comprising a pad mounted on the carrier and a jack reciprocable vertically above the pad, a toggle connected at its lower end with the jack and at its upper end being pivoted to the supporting structure and two cam arms at the upper end of the toggle extending in opposite directions, and cam rollers supported on said supporting structure in the paths of said cam arms, said cam arms during rotation of said carrier with said units cooperating with said cam rollers to cause said toggles to move into position to shift the corresponding jacks toward the corresponding pads and then to cause relaxation of said toggles and withdrawal of the jacks from the pads.

11. In a sole laying machine, the combination of a stationary supporting structure, a carrier mounted on said supporting structure for rotation on a vertical axis, a plurality of sole laying units on said carrier, each unit comprising a pad and a jack reciprocable vertically thereabove, a toggle connected at its lower end with the jack and at its upper end with said carrier and arcuate cam arms extending in opposite directions from the upper end of the toggle and centered in the axis of said carrier, and a set of cam rollers mounted on said supporting structure to be in the path of said cam arms, whereby upon rotation of said carrier with said units said cam arms will cooperate with said cam rollers to automatically effect pressure movement of the toggles against the jacks and relaxing movement to withdraw the jacks from the pads.

12. In a sole laying machine, the combination of a carrier rotatable on a vertical axis, a pad on said carrier, a jack shiftable vertically on said carrier above the pad and having means for supporting a last to which pressure is to be applied, a toggle above the jack and connecting between the jack and the carrier, a cross arm at the upper end of said toggle having cam surfaces, and abutment structure supported in the paths of said cam surfaces when said carrier is rotated, engagement of one cam surface with said abutment structure causing pressure applying movement of the toggle and jack, and engagement of the other cam surface with said abutment structure causing relaxation of said toggle and withdrawal of the jack.

13. In a sole laying machine, the combination of a carrier rotatable on avertical axis, a plurality of sole laying units mounted on and spaced circumferentially around said carrier. each unit comprising a pad, a jack vertically reciprocable over the pad, a toggle connected at its lower end with the jack and at its upper end being hinged to the carrier and inner and outer arcuate arms at the upper end of the toggle extending in opposite directions and centered at the axis of the carrier, and inner and outer cam rollers stationarily supported in the paths of said inner and outer cam arms when the carrier rotates, co-

operation of the outer cam arm of the togglesupporting member, a toggle pivoted at oneend on said supporting frame and at its other end to one of said members, an arm rigid on one of the links of said toggle and extending at an angle from the outer end of the link, and means for engaging said arm to cause swinging of the toggle links into pressure position to thereby bring said members into pressure engagement or to swing said links into pressure releasing position.

15. In a sole laying machine, the combination of a supporting frame, pressure mechanism comprising apad member and a last supporting member, a toggle comprising an upper link pivoted at its outer end to said supporting frame and a lower link pivoted at its outer end to one of said members, an arm rigid on said upper link and extending from said link where it is pivoted to said frame, and means for exerting vertical pressure against said arm to swing the toggle links to bring said members into pressure engagement or to swing said links into pressure releasing position.

In testimony whereof I have hereunto sub scribed my name at Chicago, Cook county,

Illinois.

CHARLES L. MOYER.

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