US2934774A - Machines for shaping uppers over lasts - Google Patents

Description

May 3, 1960 A. J. GILBRIDE ETAL 2,934,774

MACHINES FOR SHAPING UPPERS OVER LASTS Original Filed Feb. 14, 1957 5 Sheets-Sheet 1 Inventors Andrw J fiilbride Adelbert WRoc/vwelLfi- By their Attorney M7 611! Wu! y 1960 A. J. GILBRIDE ET AL 2,934,774

MACHINES FOR SHAPING UPPERS OVER LASTS Original Filed Feb. 14, 1957 5 Sheets-Sheet 2 4&2

5Z6 Inventors Andrew J Gilbride Adelberz Wfioc/ruzelljr By their Attorney y 3, 1960 A. J. GILBRIDE ETAL 2,934,774

MACHINES FOR SHAPING UPPERS OVER LAS'I'S Original Filed Feb. 14, 1957 5 Sheets-Sheet 3 M W i z %w 5 1 %m m 1 9 o o o w [J n 9 II\..\|\\ llll II 5 6 M MM 5 Q j Inven tors Andrew J Gilbr'ide Adelbert WRockwe/Ld'r By their Attorney ZrM-M/ j May 3, 1960 A. .LGILBRIDE ET AL 2,934,774

MACHINES FOR SHAPING UPPERS OVER LASTS Original Filed Feb. 14, 1957 5 Sheets-Sheet 4 Inventors Andrew J Gz'lbrz'de 7 Adelberz WfFOCAU/QZZ J" By their Azzomey May 3, 1960 A. J. GILBRIDE ET AL 2,934,774

MACHINES FOR SHAPING UPPERS OVER LASTS Original Filed Feb. 14, 1957 5 Sheets-Sheet 5 .w l e a l J n w w w 1! 6 R m n J W m w w n 0 e e h I w M t n e H M A m B J 8 J 0 1. my L W 2 x/ W 2, 5 7 0 d, w U111 0 W 9M W WM ML? A7 w w r 0 4 m w 4 Z Z M T- X 3 H lllmgz .I II .rfFrrnL I I U I w I I I I I ll O- w United States Patent MACHINES FOR SHAPING UPPERS OVER LASTS Andrew J. Gilbride, Swampscott, and Adelbert W. Rockwell, In, Beverly, Mass., assignors to United Shoe Machinery Corporation, Flemington, N.J., a corporation of New Jersey Original application February 14, 1957, Serial No. 640,106. Divided and this application November 25, 1958, Serial No. 776,279

Claims. (Cl. 12-127) This invention relates to lasting machines and particularly to a novel and improved means for supporting and securely clamping a shoe on the supporting means with its toe end located in proper position to be acted upon by the wipers of a toe lasting machine. As herein illustrated, this improved shoe supporting means is shown as associated with a toe lasting machine of the novel type disclosed and claimed in a copending application for United States Letters Patent Serial No. 640,106, filed February 14, 1957, in the names of the present applicants, of which the present application is a division. It will, of course, be understood that the improved shoe supporting means of this invention is of general utility and not limited to use in a machine of that particular type or to the exact mechanical construction illustrated.

During the toe lasting operation the shoe is mounted on a support and the upper materials are shaped to the toe end of the last by means of the wipers which move relatively to the toe end of the shoe. Because of the forces applied by the wipers, it is essential that the shoe be quite firmly clamped on the support, and in order to facilitate the toe lastingoperation, it is especially desirable that the toe end of each shoe occupy substantially the same longitudinal position relatively to the wipers and also that it be exposed so that the operator may readily observe the progress of the lasting operation and, if he so desires, supplement the action of the wipers by means of hand pincers or other suitable lasting tool. Therefore, an object of this invention is to provide a novel and improved arrangement for supporting and securely clamping the shoe with its toe end located in proper position to be acted on by the wipers and wholly exposed to the view of the operator.

'With this object in view, there is provided, in the herein illustrated machine, which has the usual toe rest for engaging and supporting the toe end of the shoe being lasted, a heel abutment and a last spindle mounted for movement to press the heel end of a shoe mounted thereon against the heel abutment, and as a result of such pressure to cause the spindle and shoe to be swung in a direction to clamp the toe end of the shoe firmly against the toe rest. More particularly, the heel abutment and the mentioned spindle are mounted for adjusting movements, toward and away from the toe rest, to accommodate shoes of dilferent sizes; heightwise relatively to the toe rest to accommodate shoes on lasts of different heel heights, and angularly about a vertical axis extending through the toe rest to accommodate right and left shoes, as well as shoes on lasts of different styles, and fluid pressure operated means are provided for effecting movement of the last spindle to press the heel end of a shoe thereon against the heel abutment. In the herein illustrated machine, a manually operable valve is provided for controlling the flow of fluid under pressure to the last-mentioned fluid pressure operated device and preferably this valve is also adapted to control the flow of lipid under pressure to the three other control valves ice provided for controlling power movements of the wipers, as fully disclosed in the above-identified parent application.

The above and other objects and features of the invention will appear in the following detailed description of a preferred embodiment thereof which is illustrated in the accompanying drawings and will be pointed out in the claims.

In the drawings,

Fig. 1 is a view in perspective of a toe lasting machine provided with a shoe support embodying the features of this invention;

Fig. 2 is another perspective view of the machine showing only a portion thereof and at a somewhat enlarged scale;

Fig. 3 is a view similar to that of Fig. 2, but with a number of the parts omitted or broken away and with a shoe shown in the machine;

Fig. 4 is still another perspective view of the machine looking at the rear portion thereof; and

Fig. 5 is a view in side elevation of the improved shoe support with some parts omitted and others shown in vertical section.

Referring to these drawings, and particularly to Fig. l, the toe lasting machine which is therein illustrated is provided with shoe supporting means comprising a toe rest 20 on which the toe end of a shoe to be lasted is clamped by means of a shoe supporting last pin 22 and a heel abutment 24, see also Fig. 5, while the operating elements of the machine comprise two wipers 26, 26 mounted for advancing and closing movements in a wiper carrying head 28 which is movable heightwise relatively to the toe end of the shoe being lasted.

In common with toe lasting machines of this general type, the herein illustrated machine has manually operated means for advancing and closing the wipers and also for moving the wiper carrying head heightwise relatively to a shoe being lasted, the former comprising a hand lever including an operating arm 30 having a handle 32 mounted thereon while the latter includes a foot treadle 34. The aforementioned parts of the machine are associated with and supported on a main frame construction comprising an upper portion indicated generally by the reference character 40 and a lower portion indicated generally by the reference character 42. As is shown in Fig. 1, there is secured to the lower frame portion 42 a bracket 43 on which thefoot treadle 34 is pivotally supported and an auxiliary platform 44 adjacent to the treadle. Q 7

The wiper carrier 28, which contains a well-known type of mechanism for advancing and closing the wipers 26, 26 in response to axial movement of an operating rod 50, Figs. 2 and 3, is mounted for angular adjusting movements about a longitudinal axis, in the usual manner by means including a handle 52, on a supporting frame 54, which, in turn, is slidably mounted on a guide member 56, see also Fig. 4. This guide member is pivotally supported on a cross shaft 58 which extends through an up standing hub portion 60 formed on the guide member and which is supported at its opposite ends on a bracket member 62 secured to the upper side of the frame con struction 40. For effecting relative movement between the guide member 56 and the wiper head supporting frame 54, for the purpose of adjusting the position of the wipers in a longitudinal direction relatively to the toe end of a shoe being lasted, an adjusting screw 64 is provided and arranged to be rotated by meansincluding two spiral gears 66, 68 and a hand wheel 70 carried on the outer end of a shaft 72 which extends outwardly through an opening in the frame construction 40, which opening accommodates movements of this shaft transversely to its own axis when the guide member 56, frame member 54,

and the wiper carrier 28 which is mounted thereon are swung about the pivotal axis provided by the shaft 58.

The wiper operating rod 50 is connected to the upper end of an upwardly extending arm 80 of a bell-crank lever 82 which has a rearwardly extending arm 84, Fig. 4, this bell-crank lever being secured to a cross shaft 86 which is journaled in suitable hearings in bosses 88, 88 formed on the frame construction 40. Also secured to this cross shaft is a downwardly extending arm 90 which is connected, by means of a link 92, to another downwardly extending arm 94, which is secured to the inner end of a shaft 96. The shaft 96, which is journaled in a suitable bearing bore in a bos 98 formed on the frame construction 40, projects outwardly therebetween, and secured to this outwardly projecting portion of the shaft 96 in a hub 188 formed integrally with the above-mentioned arm 39. As will be apparent, the operator may manually advance and close or retract and open the wipers 26, 26 by grasping the handle 32 and swinging the arm 30 toward or away from the front of the machine.

Connected to a forwardly extending portion of the guide member 56 and extending downwardly therefrom is an operating link, indicated generally by the reference character 118, Fig. 5, and comprising an upper portion 112 which is substantially square in cross section, and a lower rod-like portion 114 joined together by a threaded adjusting sleeve 116. The rod 114 is connected to one arm 118 of a three-armed lever, indicated generally by the reference character 120, and having two other arms 122 and 124. This three-armed lever has a hub portion 126 by means of which it is rotatably mounted on a fixed cross shaft 128 associated with the frame construction 40. Extending between the arm 124 of the lever 120 and the foot treadle 34 i an adjustable link 130, Fig. 1. With the arrangement which has so far been described, the herein illustrated machine may be operated to last the toe end of a shoe in exactly the same manner as is done in prior manually operated machines of this general type, eifecting the heightwise movement of the wiper carrying head 28 and wipers 26, 26 by means of the foot treadle 34 and advancing and closing or retracting and opening the wipers 26, 26 by means of the arm 30 and handle 32 thereon.

The last pin 22 has a base portion 450 and is pivotally mounted on the upper end of a lever 452, by means of a pin 453, Fig. 5. This lever, in turn, is pivotally mounted on a cross shaft 454 carried by forwardly extending portions 456 formed on a frame-like member 458 which is shaped as shown in Figs. 1, 2, 3 and 5. The frame-like member 458 is mounted for sliding movement on two spaced supporting arms 460, 460 which are joined together at their outer ends by a cross piece 462 and which carry at their inner ends arm extensions 464, 464, see Figs. 2 and 3. Pivoted at its upper ends on two studs 466, 466, mounted on the opposite sides of the member 458, is a yoke-like member 470, Fig. 2. Rotatably mounted in the lower'end of this yoke-like member and held against axial movement relatively thereto by means of a collar 472 and a bevel gear 474 is a supporting and adjusting screw 476 which is threaded through a block 480, Fig. 5. This block is mounted for swinging movement about a substantially horizontal axis by means of trunnions 482 on an intermediate member 484 which, in turn, is mounted for swinging movement about a substantially vertical axis, by means of a pin 486, on a supporting member 488. This supportingmember is mounted on the cross shaft 128, on the opposite sides of the lever 120, and is held against rotation thereon by means of a sleeve 490 carried by a second cross shaft 492 and engaging a recess 494 formed in the member 488. At their outer ends, the arm extensions 464 are pivotally mounted, by means of stub shafts 496, 496 on the oppositely extending arms of a yoke 498 for swinging movement about a horizontal axis extending substantially transversely of the machine and tangent to the operating surface on the toe rest. This yoke is journaled for swinging movement about a substantially vertical axis on a transversely extending portion 500 of the upper frame construction 40 by means of a post 502 which is keyed to the yoke member and rotatably mounted in a bore 504 formed in the frame portion 500. Supported on an upwardly extending portion of the post 502 is the toe rest 20.

For swinging the yoke 498 about the axis of the post 582, thereby to locate the last pin 22 and heel abutment 24, which, as will be presently explained, is supported on the frame-like member 458, in different lateral positions to accommodate shoes on lasts of different styles and/or rights and lefts, there is pivoted on the under side of one of the arm of the yoke a threaded block 510 which receives an adjusting screw 512, Fig. 5. The inner end of this adjusting screw is rotatably mounted and held against axial movement in a block 514, pivotally mounted on the aforementioned frame portion 500, and secured to the outer end of this screw is a hand wheel 516, Fig. 2, by means of which the screw may be rotated. The frame-like member 458 may be raised or lowered in order to accommodate shoe on lasts of various different heel heights, by rotating the supporting and adjusting screw 476 by means of a bevel gear 520 which is in mesh with the bevel gear 474, mentioned above, and which is secured to the lower end of a shaft 522, Fig. 5. This, shaft is journaled in an offset portion formed integrally with one side of the yoke-like member 470 and carried at its upper end is a hand wheel 524, Figs. 2 and 3. The frame-like member 458 may also be moved toward or away from the toe rest 20 to accommodate shoes of diiferent sizes by means of an adjusting screw 526 which is threaded through a portion of the frame-like member 458, Fig. 5. At one end, this adjusting screw is journaled and held against axial movement in the cross member 462 and secured to this end of the shaft is a hand wheel 528.

As shown in Fig. 5, the heel abutment is mounted for swinging movement, about a substantially horizontal axis extending transversely of a shoe in the machine, on a carrier block 530 by means of a pivot pin 532 and a spring-pressed plunger 534 is provided for holding the heel abutment in the mid position in which it is shown in Fig. 5. The block 530 has flanges 536 formed thereon by means of which it is mounted for vertical adjusting movement in guideways' 538 formed in the frame-like member 458 when a clamp screw 539 is loosened, see Figs. 2 and 3.

The shoe to be lasted is clamped against the toe rest 20 by moving the last pin 22 rearwardly to bring the heel end of the shoe against the heel abutment 24, this abutment being shaped to receive the heel end of the shoe, see Figs. 2 and 3, and provided with a resilient shoe engaging pad 540. For thus moving the last pin, the lever 452 is swung about the axis of shaft 454 by means of a fluid pressure operated device, indicated generally by the reference character 550, and comprising a cylinder 552 containing a diaphragm 554 having an operating rod 556 which is connected to' the lower end of the lever 452. A branch of a main pressure pipe is connected to the cylinder 552. Accordingly, when a valve is operated to connect a supply pipe to the main pressure pipe, the diaphragm 554 will be moved to the left, Fig. 5, against the slight resistance of a return spring 558, thereby swinging the lever 452 about the axis of shaft 454 in a clockwise direction and moving the last pin 22, carried by the upper end of the lever 452, and with it the shoe mounted thereon, to the right, Fig. 5, to press the heel end' of the shoe against the stationary heel abutment 24.

about the pivotal axis provided by pin 453 to clamp its forepart firmly against the toe rest 20.

Although the operation of the improved shoe support should be apparent from the above description of its various elements, it will be briefly outlined below. Assuming that the last pin 22 and heel abutment 24 have been initially adjusted laterally, heightwise and lengthwise respectively, by means of the hand wheels 516, 524 and 528, to positions suitable for the shoe to be lasted, the shoe is placed on the last pin by the operator who then actuates the mentioned valve to admit air under pressure to the main pressure pipe thereby causing the shoe to be clamped in place on the toe rest 20 and at the same time located in a definite lengthwise position in the machine by virtue of the engagement of its heel end with the abutment 24. If desired, additional adjusting movements may be imparted to the shoe by means of the aforementioned hand wheels. However, once the correct positions of the last pin and heel abutment have been determined for one size of shoe of a particular style, successive shoes of the same size and style will each be. located in the correct lengthwise position in the machine regardless of variations in the location of the last pin hole inasmuch as the lengthwise position of the shoe is determined by the fixed heel abutment 24.

With further reference to the shoe supporting means, as just noted, the positions of the last pin 22 and heel abutment 24 may be varied, by means of the hand wheels 524 or 528 if desired, even after the shoe has been clamped against the toe rest 20. Thus, the hand wheel 516 may be rotated to shift the last pin and heel abut ment laterally of the machine and during such adjusting movement the toe rest will turn with the shoe thereby avoiding any danger of scufiing or otherwise marking the upper materials. Also the hand wheel 524 may be rotated to raise or lower the last pin and heel abutment and as this adjusting movement is being effected the arms 460, 460 will swing about an axis extending substantially transversely of the machine and tangent to the operating surface of the toe rest so that the toe end of the shoe in effect will roll on the toe rest without any tendency for the upper materials to be stressed or otherwise disturbed. Preferably, the various parts of the shoe supporting means are so proportioned, see Fig. 5, that for any given style of last and within certain limits, as the heel abutment is adjusted by means of the hand wheel 528 to accommodate shoes of different sizes, the last pin and heel abutment will be automatically raised or lowered, relatively to the toe rest, to accommodate the corresponding change in the heightwise position of the top cone of the last. It will also be observed that during the upwiping and overwiping operations, the shoe being lasted is very securely held against rearward movement in response to the substantial forces exerted thereon by the wipers by virtue of the rigid and substantially unyielding support which is provided for its heel end by the heel abutment 24.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame, a bracket mounted on the frame for angular adjusting movements about a vertical axis extending through said toe rest and about a horizontal axis extending substantially transversely of the machine, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

2. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for ashoe on its last comprising a toe rest mounted on the frame, a bracket mounted on the frame for angular adjusting movements about a vertical axis extending through said toe rest and about a horizontal axis extending substantially transversely of the machine and tangent to the operating surface on the toe rest, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and fluid pressure operated means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

3. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame, a yoke member mounted on the frame for angular adjusting movements about a vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

4. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame, a yoke member mounted on the frame for angular adjusting'movements about a vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis ex tending transversely of the machine and substantially tangent to the operating surface on the toe rest, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and fluid pressure operated means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

5. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support forja shoe on its last comprising a toe rest mounted on the frame for rotation about a vertical axis extending therethrough, a yoke member mounted on the frame for angular adjusting movements about the vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjust-ing movements about a horizontal axis extending transversely of the machine, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

6. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame for rotation about a vertical axis extending therethrough, a yoke member mounted on the frame for angular adjusting movements about the vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine and 7 V substantially tangent to the operating surface on the toe rest, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and fluid pressure operated means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

7. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame, a

yoke member mounted on the frame for angular adjust-' ing movements about a vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine, means for supporting the bracket member in different positions of angular adjustment including a supporting member of variable length operatively associated with said bracket at its upper end and connected at its lower end to a block mounted on the frame for angular movement about the vertical axis through said toe rest, a carriage mounted on said bracket for adjusting movement toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement With the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

8. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame, a yoke member mounted on the frame for angular adjusting movements about a vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine and substantially tangent to the operating surface on the toe rest, means for supporting the bracket member in different positions of angular adjustment including a supporting member of variable length operatively associated with said bracket at its upper end and connected at its lower end to a block mounted on the frame for angular movement about the vertical axis through said toe rest, a carriage mounted on said bracket for adjusting movement toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and fluid pressure operated means for moving said last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and 8 thereby to swing the toe end of the shoe into firm contact with the toe rest.

9. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame for rotation about a vertical axis extending therethrough, a yoke member mounted on the frame for angular adjusting movements about the vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine, means for supporting the bracket member in different positions of angular adjustment including a supporting member of variable length operatively associated with said bracket at its upper end and connected at its lower end to a block mounted on the frame for angular movement about the vertical axis extending through said toe rest, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and means for moving said last supporting spin dle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

10. In a machine for shaping uppers over lasts having a main frame and toe lasting wipers, a support for a shoe on its last comprising a toe rest mounted on the frame for rotation about a vertical axis extending therethrough, a yoke member mounted on the frame for angular adjusting movements about the vertical axis extending through said toe rest, a bracket mounted on the yoke member for angular adjusting movements about a horizontal axis extending transversely of the machine, means for supporting the bracket member in different positions of angular adjustment including a supporting member of variable length operatively associated with said bracket at its upper end and connected at its lower end to a block mounted on the frame for angular movement about the vertical axis extending through said toe rest, a carriage mounted on said bracket for adjusting movements toward and away from the toe rest, a heel abutment and a pivotal last supporting spindle on said carriage, and fluid pressure operated means for moving the last supporting spindle toward said heel abutment to force the heel end of a shoe thereon into engagement with the heel abutment and thereby to swing the toe end of the shoe into firm contact with the toe rest.

No references cited.

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