US3005216A - Shoe machines - Google Patents

Description

Oct. 24, 1961 E. A. DESCHENES 3, 6

SHOE MACHINES Filed Oct. 1, 1959 3 Sheets-Sheet 1 [n be nfor E m z'le A.Desc/zenes [56, By his Afforney MW f-l/ Oct. 24, 1961 E. A. DESCHENES SHOE MACHINES 5 Sheets-Sheet 2 Filed Oct. 1. 1959 Oct. 24, 1961 A. DESCHENES SHOE MACHINES 3 Sheets-Sheet 3 Filed 001;. l, 1959 United States Patent ce 3,005,216 SHOE MACHINES Emile A. Desehenes, Danvers, Mass, assignor to United Shoe Machinery Corporation, Flemington, N.J., acorporafion of New Jersey Filed Oct. 1, 1959, Ser. No. 843,870 12 Claims. (Cl. 12-423) This invention relates to shoe machines, and particularly to means for presenting work in position to be operated upon, and for initiating an automatic operating cycle of instrumentalities associated with the machine. The invention is herein illustrated as embodied in a heel seat lasting machine of the type disclosed in United States Letters Patent No. 1,583,044, granted May 4, 1926 on an application filed in the name of Charles H. Hoyt, moditied in some respects in accordance with the disclosure of United States Letters Patent No. 1,770,976, granted July 22, 1930 on an application filed in the name of Joseph Fausse. It will be understood, however, that the invention is .not limited to machines of this particular type or to theexact mechanical construction shown.

In machines of the type disclosed in the above-mentioned patents, the shoe to be lasted is supported on a jack which is operable, .by means of a foot treadle, to effect movement of a shoe thereon first in a lengthwise direction and then in a heightwise direction to bring the heel end of the shoe into engagement with the heel band which constitutes one of the several heel seat lasting instrumentalities provided in the machine, and to cause the bottom of the heel end of the shoe to contact a holddown which limits heightwise movement of the shoe relatively to the heel band. After the shoe to be lasted has thus been presented in proper position to be operated upon by the heel seat lasting instrumentalities which may include, in addition to the heel band, heel seat wipers and fastener inserting devices, an automatic operating cycle of these instrumentalities-is initiated in response to movement by the operator of a manually movable control member. In order to facilitate the operationof machines" of this type, and especially with the view of relieving the operator ofthe effort involved in actuating the shoe sup. porting jack with his foot, it has already been proposed to provide power operated means for this purpose, together with power operated means for initiating an automatic operating cycle of the lasting, instrumentalities, see, for example, United States Letters Patent No. 2,143,881, granted January 17, 1939 on an application filed in the name of Jacob C. Jorgensen. It is an object of this invention to provide a novel and improved arrangement wherein the operation of the jack and the initiation of. the automatic operating cycle are each effected by fluid pressure operated means which is of relatively simple and inexpensive construction and yet, at the same time, is effective and dependable in operation.

With the aforementioned object in view, in the herein illustrated machine which has instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such automatic operating cycle, a support for a .shoe on its last which is movable first lengthwise and then heightwise of a shoe thereon to present the shoe in position. to be operated upon by the mentioned in'strumentalities, and an abutment member for engaging the shoe to limit heightwise movement thereof, there is also provided power operated means for moving the shoe suppont together with means which are responsive to the pressure of the shoe against the mentioned abutment for-moving the control member, thus to initiate an automatic operating cycle of the instrumentalities. More particularly, the shoe support of the herein illustrated machine comprises a jackhaving a body portion and a post including relatively movable parts with yield 3,005,216 Patented Oct. 24, 1961 able means tending to separate these parts and with shoe supporting means on the post, the body portion of the jack being pivotally supported to effect lengthwise movement of the shoe and the post being mounted on the body portion for vertical movement to effect heightwise movement of the shoe, while fluid pressure means are provided for first swinging the jack and then effecting vertical movement of the post, together with fluid pressure operatedmeans which are rendered operable as a result of relative approaching movements of the two post parts, in response to pressure of the shoe against the abutment member, for moving the mentioned control member. As will be apparent, with the foregoing relatively simple arrangement, premature initiation of the operating cycle of the heel seat lasting instrumentalities before a shoe on the jack has been presented in proper position to be operated upon by said instrumentalities and with its heel end in engagement with the heel band and against the holddown is effectively precluded.

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

In the drawings,

FIG. 1 is a view in side elevation of a portion of a heel seat lasting machine embodyingthe features of the invention;

FIG. 2 is another view in side elevation but at an en-j larged scale of certain portions of the machine shown in FIG. 1; and

FIG. 3 is a schematic view illustrating the fluid pressure system provided in the machine with certain operating elements thereof illustrated diagrammatically in different positions assumed during the operation of the machine.

Referring to these drawings, and particularly to FIG. 1 thereof, the partially illustrated heel seat lasting machine shown is substantially the same as the machine disclosed in United States Letters Patent No. 1,5 83,044, mentioned above, modified in some respects in accordance with the disclosure of United States Letters Patent No. 1,770,976,-

also mentioned above. Thus, the illustrated machine has lasting instrumentalities usually provided in machines of this type and including a heel band 10, lasting wipers 12., and fastener inserting drivers 14 carried by a driver head i 16. These lasting instrumentalities are, as in the prior machines, associated with a head casting, indicated generally by the reference character 20 and mounted on a supporting frame construction indicated generally by the reference character 22, and are arranged to be driven through an automatic operating cycle from a main cam shaft 24- by mechanism, not shown, but similar to that disclosed in the above-mentioned Hoyt patent and includinga single revolution clutch arranged to be tripped as the result of a lengthwise movement of a clutch trip finger 30 which corresponds to the finger 52 in the Hoyt machine.

For supporting a shoe in position to be operated on by the aforementioned lasting instriunentalities, the machine has a jack comprising a body portion 40, which is mounted for pivotal movement about the axis of a cross shaft 41 to move a shoe thereon in a lengthwise direction thereby to bring the heel end of the shoe into engagement with the heel band 10, and a jack post including upper and lower telescoping portions 42, 44, FIG. 2, the latter of which is mounted for vertical sliding movement1 in the spring 54, received within the lower post portion 44,

exerts a yielding force on the upper post portion 42 tending to separate these two jack post portions, and this spring is of sufficient strength to support the upper post portion, shoe support structure, and a shoe S thereon, in the position shown in the drawings. Secured to the lower end of the ,post portion 44 is a rack bar 60 against which one end of a lever 62 bears. This lever is pivotally mounted on the jack body portion 40 by means of a cross shaft 64 and has connected to its other end a block 66. This block is secured to the upper end of a piston rod 70 which extends through a gland 72 and into a cylinder 74 where it carries a piston 76, FIG. 2. The cylinder 74 is pivotally mounted by means of a pin 80 on a bracket 82 which is associated with the machine frame 22.

Mounted on the block 66 is a roll 8'4 which engages a control surface 86 formed on a member 88 adjustab'ly mounted on the machine frame. This control surface is so shaped that upon downward movement of the block 66 by the piston 76 against the resistance of a return spring 89 and in response to the admission of fluid under pressure into the cylinder 74 above the piston 76 through a flexible conduit 90, the body portion of the jack is first swung in a clockwise direction about the axis of the cross shaft 41 until the body portion reaches a substan tially vertical position, see FIG. 2, with the heel end portion of the shoe S thereon in engagement with the heel band 10, see right-hand part of FIG. 3, whereupon continued movement of the piston 76 swings the lever 62 in a clockwise direction, about the axis of the shaft 64, thereby moving the jack post portions 42, 44 as a unit and in a vertical direction to an extent determined by the engagement of the bottom of the shoe adjacent its heel end with a holddown 92.

During the automatic operating cycle of the machine, which foliows the aforementioned movements of the jack and which is automatically initiated in a manner to be explained below, the shoe S is brought into firmer engagement with the heel band and is urged more forcibly against'the holddown 92 by mechanism which is similar to that disclosed in the patent to F-ausse mentioned above. This mechanism includes a power operated bell-crank lever 100 from which there extends two rods 102, 104. The rod 102 is adapted to act, through a pawl 106, ratchet wheel 108 and pinion 110 on a rack bar 112 which is connected to the jack, to bring the shoe into more firm engagement with the heel band, while the rod 104 is adapted to act, through a yielding link 120', pawls 122, 122, ratchet wheel 124 and a pinion 126, on the rack bar 60 to urge the shoe more forcibly against the holddown, in a maner which will be readily understood by reference to the Fausse patent.

Referring to FIG. 3 of the drawings, the above-mentioned conduit 90 is connected to the discharge side of a valve 130 having a plunger 132 adapted to be moved downwardly, against the resistance of a return spring 134, to connect the conduit 90 to a main supply conduit 136. This main supply conduit is in communication with a source of fluid under pressure, not shown, through a suitable filter 138, pressure regulator valve 140, and a lubricating device 142. For moving the valve plunger 132 downwardly, thereby to cause the jack to move the shoe S thereon first lengthwise and into engagement with the heel band 10 and then heightwise into contact with the holddown 92, the following arrangement is provided. Pivotally mounted on the bracket 82, by means of a cross shaft 1'46, is a treadle 150 having afoot plate 152, FIG. 2, and two oppositely extending arms 154, 156, FIG. 3. Slida-bly mounted in the arm 154 is a plunger 160 which is urgeddownwardly, to the extent permitted by a stop nut 162, by a compression spring 164. The plunger 160 is directly in 'line with the valve plunger 132 so that when the treadle 150 is depressed, this valve plunger will be moved downwardly to admit fluid under pressure to the conduit 90 and-through this conduit to the cylinder 74. In order to control the speed of movement of the '4 piston 76 in either direction, suitable one-way check and throttle valves 166, 168 are associated with the conduit 90.

Referring to 'FIG. 1, the clutch trip finger is connected to an operating rod 180, which extends to the front of the machine and carries a hand operating knob 182, by means of a bell-crank lever 184, a compression spring 186 being interposed between the knob 182 and a part of the machine frame to hold the rod yieldingly in the position in which it is shown. It will be understood that rearward movement of the rod 180, which corresponds to the rod 54 of the Hoyt machine and to the rod 80 of the Fausse machine, by pressure of the operators hand on the knob 182, will trip the clutch (not shown) and effect an automatic operating cycle of the lasting instrumentalities as the result of a single revolution of the cam shaft 24. In the herein illustrated machine, such rearward movement of the rod 180 is effected in the following manner. Mounted in a cylinder 190, FIG. 1, which is supported on the machine frame 22, is a piston 192, FIG. 3, having a piston rod 194. This piston rod extends out through one end of the cylinder and carries an arm 196 having a notched end adapted to engage a collar 198 on the rod 180 when the piston 192 is moved upwardly, FIG. 3 (to the right as viewed in FIG. 1), as the result of the admission of fluid under pressure to the cylinder 190 through a flexible conduit 200, valve 202, flexible conduit 204, and valve 206.

The valve 206 has a plunger 208 which is adapted to be moved downwardly against the resistance of a return spring 210, thereby to connect the main supply conduit 136 to the conduit 204, while the valve 202, which is of similar construction, is provided with a plunger 212 7 adapted to be moved downwardly against the resistance of a return spring 214 to connect the conduit 204 to the conduit 200. Carried by the arm 1560f the treadle is an adjustable abutment screw 216 which is directly in line with the plunger 208 of the valve 206. Accordingly, as a result of the depression of the treadle 150, the valve 206 will be operated to admit fluid under pressure to the conduit 204. The valve 202 is secured to the enlarged upper portion 220 of the lower jack post portion 44, FIG. 2, which slidably, but nonrotatably, receives a block 222 carried on the lower part of the upper jack post portion 42. Secured to the block 222 is an arm 224 which carries an adjustable abutment screw 226, see FIG. 3.

When the jack has been swung inwardly, to bring the heel end of the shoe S thereon into engagement with the heel band 10 and the jack post portions have been moved upwardly to force the heel end of the shoe against the holddown 92, spring 54 will yield to permit relative approaching movements of the upper and lower jack post portions in a manner which will be readily apparent. Such relative approaching movements of these parts will cause the valve plunger 212 to be moved downwardly by the abutment screw 226 and to a position to connect the conduit 200 to the conduit 204. Now, as a result of the admission of fluid under pressure to the cylinder 190, the clutch will be tripped and an automatic operating cycle of the lasting instrumentalities initiated. However, inasmuch as the fluid-operated piston 192, which is provided for moving the control rod 180, also movable by the operator, is rendered operative only in response to the pressure of the shoe against the holddown, automatic tripping of the clutch and initiation of an automatic operating cycle, prior to the time when the shoe has been presented in proper position to be operated on by the lasting instrumentalities is eflectively prevented. Also, inasmuch as vertical movement of the rackbar 60 will be terminated by a stop surface 228 on the jack body portion 40, see FIG. 2, before the heel support 50 can l ment of the piston 192 is controlled by a one-way check and needle valve 230 associated with the conduit 200 to avoid a too rapid movement of the clutch trip finger 30.

Slidable within a cylinder 248, suitably supported on the machine frame, is a plunger 250 having a reduced rod portion 252 which extends through a coil spring 254 and through a resilient bushing 256 and then out through the right-hand end of the cylinder, FIG. 1. A check nut threaded on the right-hand end of the rod portion 252 limits movement of the plunger 250 to the left, as shown. Secured to the upper side of the rack bar 112 is an up standing stud 260 which is in line with the plunger 250. Thus, when the jack is swung inwardly from the position shown in FIG. 1 to the position shown in FIG. 2, this stud will strike the plunger 250 and move it to the right. Such movement of the plunger, however, will be resisted by the spring 254, as well as by the frictional resistance imposed on the rod portion 252 as it is forced through the bushing 256, which resistance will be steadily increased as spring 254 is compressed. This frictional resistance tends to eliminate any tendency for the jack to be bounced outwardly by the reaction of the spring.254 and instead, the movement of the jack isfirst slowed down by the plunger 250 and ultimately brought to a stop by the engagement of the heel end of the shoe with the heel band without any tendency for rebound. At the conclusion of the lasting operation the jack is returned to the position shown in FIG. 1 by a coil spring 262 and by gravity, whereupon the force exerted by the spring 254 is sufiicient gradually to move the plunger to the left to the position shown in FIG. 1.

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

1. In a machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a support for a shoe on its last movable first lengthwise and then heightwise of a shoe thereon to present the shoe in position to be operated on by said instrumentalities, and an abutment member for engaging the shoe to limit heightwise movement thereof by said support, power operated means for effecting such movements of the support in the mentioned sequence, and means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities,

2. In a machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a support for a shoe on its last movable first lengthwise and then heightwise of a shoe thereon to present the shoe in position to be operated on by said instrument alities, and an abutment member for engaging the shoe to limit heightweise movement thereof by said support, fiuid pressure operated means for effecting such movements of the support in the mentioned sequence, and means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities.

3. In a machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a support for a shoe on its last movable first lengthwise and then heightwise of a shoe thereon to present the shoe in position to be operated on by said instrumentalities, and an abutment member for engaging the shoe to limit heightwise movement thereof by said support, fluid pressure operated means for effecting such movements of the support in the mentioned sequence, and power operated means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities.

4. In a machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a support for a shoe on its last movable first lengthwise and then heightwise of a shoe thereon to present the shoe in position to be operated on by said instrumentalities, and an abutment member for engaging the shoe to limit heightwise movement thereof, by. said support, fluid pressure operated means for efiectin-gsuch movements of the support in the mentioned sequence, and fluid pressure operated means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle .of saidfinstrumentalities. r

5. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and 'a post, shoe supporting means on the post, said jack being pivotally mounted to effect lengthwise movement of a shoe on the supporting means and-said post being mounted for vertical" movement to eifect heighwise movement of the 'shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, power operated means for first swinging the jack andthen effecting vertical movement of the post to present a shoe on the supporting means in position to beoperated on by said instrumentalities, and means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities,

6. In a shoe machine having instrumentalities for operating on a shoe in anautomatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post, shoe supporting means on the post, said jack being pivotally mounted to elfect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement to efiect heightwise move-, ment of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for first swinging the jack and then effecting vertical movement of the postto present a shoe on the supporting means in position to be operated on by said instrumentalities, and means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities.

7. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post, shoe supporting means on the post, said jack being pivotally mounted to effect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement to efiect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for first swinging the jack and then effecting vertical movement of the post to present a shoe on the supporting means in position to be operated on by said instrumentalities, and power operated means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities.

8. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post, shoe supporting means on the post, said jack being pivotally mounted to effect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement to effect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for first swinging the jack and then efiecting vertical movement of the post to present a shoe on the supporting means in position to be operated on by said instrumentalities, and fluid pressure operated means responsive to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said'instrumentalities.

9. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post including relatively movable parts and yieldable means tending to separate said parts, shoe supporting means 'on the post, said jack being pivotally mounted to effect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement on the body portion to eifect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, power operated means for first swinging the jack and then effecting vertical movement of the post to present a shoe on the sup porting means in. position to be operated on by said instrumentalities, and means rendered operable as a result of relative approaching movements of said post parts in response to pressure of the shoe against said abutment for moving the control member to initiate'an automatic operating cycle of said instrumentalities.

10. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post including relatively movable parts and yieldable means tending to separate said parts, shoe supporting means on the post, said jack being pivotally mounted to efiect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement on the body portion to efiect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for first swinging the jack and then effecting vertical movement of the post to present a shoe on the supporting means in position to be operated on by said instrumentalities, and means rendered operable as a result of relative approaching movements of said post parts, in response to pressure of the shoe against said abutment for moving the control member to initiate an automatic operating cycle of said instrumentalities.

11. ha shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a

control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post including relatively movable parts and yieldable means tending to separate said parts, shoe supporting means on the post, said jack being pivotally mounted to eifect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement on the body portion to effect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for firs-t swinging the jack and then effecting vertical movement of the post to present a shoe on the supporting means in position to be operated on by said instrumentalities, and power operated means rendered operable as a result of relative approaching movements of said post parts, in response to pressure of the shoe against said abutment, for moving the control member to initiate an automatic operating cycle of said instrumentalities.

12. In a shoe machine having instrumentalities for operating on a shoe in an automatic operating cycle, a control member movable to initiate such an automatic operating cycle, a jack comprising a body portion and a post including relatively movable parts and yieldable means tending to separate said parts, shoe supporting means on the post, said jack being pivotally mounted to eiiect lengthwise movement of a shoe on the supporting means and said post being mounted for vertical movement on the body portion to eifect heightwise movement of the shoe, and an abutment for engaging the shoe to limit heightwise movement thereof, fluid pressure operated means for first swinging the jack and then efiectingverticalmovement of the post to present a shoe on the supporting means in position to be operated on by said instrumentalities, and fluid pressure operated means rendered operable as a result of relative approaching movements of said post parts in response to pressure of the shoe against said abutment, for moving the control member to initiate an automatic operating cycle of said instrumentalities.

References Cited in the file of this patent UNITED STATES PATENTS 1,583,044 Hoyt May 4, 1926 1,770,076 Fausse July 22, 1930 2,143,881 Jorge-nsen Jan. 17, ,1939 2,541,132 Thresh Feb. 13, 1951

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