US1549243A - Sole-pressing machine - Google Patents

Description

Aug. 11, 1925. 1,549,243

E. E. WINKLEY SOLE PRESSING MACHINE Filed April 30, 1923 Z'Sheets-Sheet 1 Aug 11, 1925.

E. E. WINKLEY SOLE PRESSING MACHINE Filed April 30, 1923 2 Sheets-Sheet 2 NVEA/TUR.

O fllfllrffl lllfilfll Patented Aug. 11 1925.

1,549,243 r orrics. 1

ERASTUS E. WINKLEY, F LYNN, MASSACHUSETTS, ASSIGNOR 1'0 UNITED SHOE HA- CHINEKY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-PRESSING MACHINE.

Application filed April 80, 1923. Serial No. 635,594.

. To all whom it may concern:

Be it known'that I, ERASTUS E. WINKLEY a citizen of the .United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain Improvementsin Sole-Pressing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. v

This invention relates to sole pressing machines and is illustratively disclosed as embodied in a sole laying machine.

Sole laying machines are in general equipped with a jack for supporting a shoe on a last, and a pressing pad for exerting pressure upon a cemented sole placed in contact with the shoe in order tosecure suflicient adhesion between the sole and the shoe to hold the parts in proper position during a fastening operation which unites the sole to the shoe. It has been found advisable to providein such machines a so-called measuring apparatus which permits the pad and the jack to be moved toward operativerelation so that the pad contacts with the sole, prior to the exertion of the operating force of the machine. when applied can be made substantially uniform for all sorts or thicknesses of work. These measuring "devices all involve some sort of lost motion mechanism which permits substantially free relative movement of the pad and jack toward one another, and also some sort of holding mechanism to maintain-the measured position and to en able the operating force of the machine to be exerted through the pad or jackas may be. These devices are quite expensive to build and while such devices have been produced which are perfectly successful, it has been found that under certain conditions of modern shoemaking and with some kinds of work, a fundamentally simpler device is practicable and advantageous.

It is therefore an object of the present invention to provide new and improved sole laying means for dealing with certain conditions of work without foregoing the advantage of the substantial uniformity of working pressure attained in prior machines while at the same time securing radical economies in manufacturing costs and fundamental improvements in the direction of Thus the operating force simplicity in construction. To this end the invention provides a power mechanism for exerting pressure upon one of the members of. the shoe pressing mechanism (pad box,

or jack, as the case may be), this power mechanism resting against a flexible abutment arranged to absorb substantially the variation in thickness in the work without substantially altering the pressure exerted by the power mechanism. More precisely described, the embodiment illustrated oomprises a toggle mechanism the straightening of which provides the requisite movement of approach between the pad box and jack, the lower link of the toggle being supported by a heavy spring whose pressure is great as compared with the changes in pressure produced by linear variations in position of the point where the toggle mechanism abuts against it. Thus such changes in length as the spring undergoes in response to varying characteristics of the work will change the pressure exerted by the spring by only a small percentage of itself and will therefore alter the force exerted by the toggle mechanism on the work by similarly only a small percentage of itself.

lthas come to be regarded as indispensable in the modern sole pressing machine that the machine possess a twin or double organization whereby the operator can be unloading and loading one side of the machine while the other is exerting pressure on the work. It is highly desirable also that these twin mechanisms be dependent so that a single operating movement on the part of the operator will reverse their relative conditions, releasing the work in one at the same time that it compresses the work in the other; It is therefore a further object of the present invention to simplifyand improve sole pressing machines in this respect, and accordingly the invention provides a twin sole laying machine having twin operating mechanisms for its respective pairs of pad box and jack, operating in alternation through a simple connection comprising a single link extending fromone operating mechanism to the other. The illustrated machine provides twin toggle mechanisms for actuating thepressure mechanisms in alternation so arranged that the making of one toggle breaks the other, this result being effected by a single link connecting the toggles.

The twin mechanisms are also advantageously combined with the resilient support used in connection with the first described feature of the invention, and accordingly mechanism is provided whereby both toggle mechanisms are supported at the r lower ends by a single heavy sprmg which exerts the re uisite. pressure through the toggle which 15 in extended posit1on.

These and other features of the mvention comprising certain combinations and arrangements of parts will be understood from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanyin drawings in which,

iig. 1 is a front elevation of the machine, partly broken away; and. I Fig. 2 is a rear perspective also largely broken away. p

The machine has a base 10 upon which are bolted two standards 12, each having two pillars 14. These pillars are substantially alike and equally spaced from "eachother in front and side elevation, and are located substantially at the four corners of the machine. From each pillar rises a rod 16 and at the upper end of each pair of rods associated with each end of the machine is placed a jack 18 of any convenient construction, which is vertically adjustable by means of a screw or other equivalent device at 20. Pad boxes 22 car-- rying resilient pads 24 both of desired or convenient construction are pivoted at 25 in sliding frames 26 on the rods 16 for vertical movement along the rods to move toward and from shoes supported upon the jacks 18. Each sliding frame 26 is moved up and down through a mechanism comprising, as shown, an upper toggle link 28 and a lower toggle link 30 pivoted at 32 to each other, the upper link being pivoted at 34 to the sliding frame 26 and the lower link being pivoted at its lower end 36 to the end of a lever 38 mounted upon a pin 39 extending from a supporting rib 40 at the rear of the machine to a plate 42 supported upon adjustable studs 44 at the front of the machine. There are two pins 39 and levers 38, one set being associated with each set of toggle mechanism. 7/ It will be noticed by reference to Fig. 1 that the members of the toggle mechanisms are oppositely arranged so that they break as their pivots 32 move toward the center of the machine and make as the pivots move outwardly. These toggles are further connected by a single link 46 uniting their lower links in the machine shown so that the operation of one toggle will cause reverse operation of the other, or in another way of putting it, movement of the link 46 in either direction will cause reverse operation of the two toggles. This link is operated to the range in the position of the abutments by a link 48 connected at one end to the link 46 (Fig. 2) and connected at the other end to an eccentric wrist pin upon a our 50 which is turned by a pinion 52 whic in turn is operated throu h a clutch 54 by a receiving pulley 56. The clutch 54 is 50 arranged that it causes an exact half revolution of the gear 50 and then automatically disconnects the ear 50 from the pulley 56. Thus the operation of the clutch through a treadle 58 will cause the link 46 to move from one extreme position at the right or the left to its other extreme position at the left or right causing one of the two toggles to break and the other to make. The inner ends of the levers 38 overlap each other asseen in front elevation, at 6Q (Fig. 1), and the ends 60 are arranged to cooperate'with an abutment 62 mounted in the end of a heavy spring 64. VVithiu 35 this spring isa cylinder 66 which assists it to maintain its form under compression andat the upper end of the spring is a similar abutment 68 above which is a screwthreaded member 70 with which it contacts 90 through a ball bearing 72. This screwthreaded member 70 is mounted in a nut 72 which is mounted on stout trunnions 74 in a standard 76 which is mounted as shown at 78 between the four standards 14. The rear side of the support 76 is supported by a rod 80 connected with the base of the machine. A rod 82 having a nut 84 is anchored firmly in the lower abutment 62 and passes through the center of the spring,

the upper abutment 68 and the. threaded member 70. The threaded member 70 is revoluble, for example by a pin thrust into a hole 86, to adjust the pressure exerted by the spring between thenut- 72 and the abutm5 ment 62 and the nut 84 when screwed down to contact with the threaded member 70 will hold the spring definitely; in compressed position so that the spring may be removed from the machine or replaced without per mitting full extension thereof, which would make it unwieldly and hard to manage, since the spring is normally under substantial v compression.

It is clear that any variation in thickness of the work will be transmitted unchanged to the outside end of the corresponding lever 38 through the corres ondingtoggle and through the lever 38 will be transmitted to the spring 34 from which the entire operative pressure is obtained. The spring 64 under normal sole laying conditions is inwardly compressed -to exert a pressure between 500 and 1000 pounds, and it is so designed that a change in length of a quarter or a half inch willvalter its pressure by a small percentage of this amount. This is easily obtainable by making the unstressed length of the spring 64 long in comparison -More exactly stated, the variation in length due to varying thickness of the .work' should be small as compared with the difference between the unstressed length and the normally stressed length of the spring. This difference which may be called the operative deformation is a measure of the force exerted by the spring.

A further advantage of considerable importance is due to'the construction of the toggle mechanisms themselves. It will be observed that they both make and break in a plane containing the pad boxes and jacks,

that is, in a plane parallel to the front ofthe machine. Thus no part of them moves toward and from the operator as he stands at his work, their movements having no componehts perpendicular to the front of the machine. Thus no clearance has to be provided for such movement and the machine can be made of minimum dimensions measured toward and from the operator, so that he does not have to reach over very much mechanism in order to do his work. This makes the machine convenient for him and minimizes the risk of injury to him. The link 46 which connects the toggles and causes reverse operation thereof also-moves in the same vertical plane containingthe pad boxes. I do not claim broadly herein that improvement which comprises twin operating mechanisms and a connection between them operating entirely in a vertical plane containing the pad boxes, this being the invention of George F. Stewart and described and claimed in United States Letters Patent No. 1,464,888, granted Aug. 14, 1923 on his application. My invention provides for the construction and arrangement of the toggles so that they are governed for the shoe and assists it in settling firmly into operative position.

'Having described my invention, what I claim as new and desire to secure by Letters liPatent of the United States is:

1. In a sole pressing machine, twin mechanisms COIHPIISlIIg each a jack, a pressing pad and a device for effecting relative movement of approach bet ween the pads and jacks, and a resilient device for supplying operative pressure to both mechanisms.

2. In a sole pressing machine, twin mechanisms comprising each a ack, a pressing pad and a device for 'efi'ecting relative movement of approach between the pads and jacks, in alternation, and a single spring for supplying operative pressure to both mechanisms.

3. In a sole pressing machine, twin mechanisms comprising each a jack, a pressing pad and a device for effecting relative movement of approachbetween the pads and jacks, and a lever associated with each device and a single spring operatively connected with both levers.

l. In a sole pressing machine, twin mechanisms comprising each a jack, a pressing pad and a device for effecting relative movement of approach between the pads and jacks, in alternation, and a lever associated with one of said devices and a spring for exerting pressure through the device by means of the lever.

5. In a sole pressing machine, twin mechanisms comprising each a jack, a pressing pad and a device for effecting relative movement of approach between the pads and jacks, and toggles each connected at one end with one member of the jack-pad pairs and a single spring supporting the other ends of both toggles.

6. In a sole pressing machine, twin mechanisms comprising each a jack, a pressing pad and a device for efi'ecting relative movement of approach between the pads and jacks, and toggles each connected at one end with one member of the jack-pad pairs, levers associated one with the other end of each toggle and a single spring cooperating with both levers to'efi'ect operating pressure.

7 In a sole pressing machine, a pressure mechanism comprising a jack and a pressing pad, a power mechanism for effecting relative pressing movement between the jack and pad, and a resilient abutment for transmitting pressure through the power mechanism constructed and arranged to transmit substantially uniform pressure irrespective of irregular thicknesses of work placedin the machine.

8. In a sole pressing machine, a pressure 9. In a sole pressin machine, a pressure 12. In a sole'pressing machine, twin pres--30 device comprising a 'ac and s ad, a mecha- 1 nism arranged to extend by a fixed amount and connected at one end to one of 5 the members of the pressure device, and a spring supporting the other end of the extensible mechanism, and exerting the o erative pressure, the unstressed len th the ring being great as compar with its 1 c ange in length 'due to' variation in the thickness of the work.

10. In a sole: pressi machine, a pressure device comprising a iac and a pad, a mechanism arranged to be extended by a fixed amount'and connected at-one end to one of the members of the pressure device, and a spring supporting the other end of the extensible mechanism and exerting the operative pressure, the operative deformation of 2 the spring being great as compared with the variation in deformation due to variation in the thickness of-the work. 11. In a sole pressing machine, twin pressure devices each comprising a jack and a pad, toggle mechanisms associated one with each pr ssure device and a single link connecting the toggles arranged to cause reverse operation of one when, the other is operated.

sure devices, each comprising a jack and a pad, toggle mechanisms assoclated one with ach pressure device and arran d to bend in a vertical plane parallel to t e fr9nt ,o,...

' the machine and a single link connecting the toggles arrangedto cause reverse operation of one when the other is operated.

13. In a sole pressing machine, twin pressure devices, each-comprising a jack and a pad, toggle mechanisms associated one with each pressure device and arranged to bend in a vertical plane passing through the jacks, and a single link lying in the said vertical plane, connecting the toggles and arranged to cause reverse operation of one when the other is operated.

14. In asole pressing machine, twin pressure devices, each comprising a jack and a pad, toggle mechanisms associated 'one with each pressure device and arranged to bend in the same plane by moving their knees in opposite directions, and a single link con necting the toggles arranged to cause re- Verse :seration of one when the other is operat In testimony whereof I have signed my name to this specification.

ERASTUS E. WINKLEY.

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