US1085400A - Holddown. - Google Patents

Description

L. M. BROWN.

HOLDDOWN.

APPLICATION FILED MAB.1,1911.

Patented J an. 27, 1914.

2 SHEETS-SHEET 1.

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L. M. BROWN.

HOLDDOWN APPLICATION FILED MAR.1,1911.

1,085,400, Patented Jan. 27, 1914..

2 SHEETS-SHEET 2.

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LOUIS M. BROWN, 01: BEVERLY, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HOLDDOWN.

Specification of Letters Patent.

Patented Jan; 2 7, 1914.

Application filed March 1, 1911. Serial No. 611,854.

.citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Holddowns, 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.

This invention relates to machines for use in the manufacture of boots and shoes and is herein shown as embodied in a lasting machine of the bed type which is equipped with means for holding down the shoe upon the toe rest. In the use of the particular ma chine shown for exemplifying the invention the shoe is intended to be held stationary while the toe embracin wipers are raised in rubbing contact wit the upper on the side faces of the last and wipe the upper smoothly toward and finally over the edge of the shoe bottom. \Vhile in machines of this type, as shown for example in U. S.

Letters Patent, No. 1,018,477, dated February 27, 1912, the shoe is clamped by the jacking apparatus with considerable security it has been found that in lasting difficult styles of shoes there is an objectionable lifting of the toe end of the shoe from the toe rest by the upward rubbing action of the wipers. 'There is also some tendency for the wipers, as they rise and close over the edge of the shoe bottom, to crowd back the innersole which should extend fully to the edge of the last.

It is the general object of this invention to provide means for holding down the shoe and means for pressing and holding the innersole forwardly 011 the last during the toe lasting operation.

An important feature of this invention consists in means for automatically applying the hold down to the shoe. This is preferably embodied in mechanism operating in time relation to jack the shoe and to apply the hold down. One of the main features of the jacking operation of this particular machine is the raising of the toe end of the shoe whereby the heel end is forced firmly back into and against the heel embracing band at the edge of the shoe bottom. As herein shown the toe end of the shoe is raised by the toe rest of the machine and the hold down is brought down to clamp the shoe upon the toe rest in a single operation.

Shoes vary in thickness or height according to the size and the style of the last and another important feature of this invention consists in the provision of supplemental means for forcing the hold down down, or for applying pressure to the shoe through the hold down, after the automatically effected movement thereof. Stated in a' different way this invention may be said to comprise means actuated without special attention from the operator to produce movement of the hold down from an inoperative position to an operative position and effect an application of the hold down to the shoe which may bean initial or proximate one, in combination with. manually operated means which may be employed if necessary to effect final down holding application or further clamping pressure. Provision is made for adjustment of the hold down with relation to its actuating means to cause more or less close application or pressure to be initially effected by the automatically acting mechanism and to compensate for variations in last thicknesses. By this provision either full or proximate pressure may be obtained initially. Preferably adjustment will be made to produce a light automatically effected engagement which will permit inspection of the work and adjustment of the hold down foot before final clamping pressure is applied. For this latter purpose the hold down foot is mounted on a lever which is engaged eccentrically by a hand lever to rock the foot down and lock it automatically.

Other features of the invention are found in the holddown foot. This foot has a tip end adapted to engage the innersole on the rear or inner side of the channel lip at the toe. The foot is normally positioned with this end inclined downwardly for initial contact with the innersole and its lip before the body of the foot comes down upon the work, and for movement forwardly into firm pressing engagement with said lip as thebody portion does come down. The foot is laterally movable slightly on its carrying lever to allow the tip end to be positioned laterally for location of the right or left toe of the shoe that is in the machine before the final pressure is applied manually. The foot also comprises a heel or rear end bearing face to engage the shoe over the ball of the last and substantially over the toe restof the jacking apparatus. Between the tip and the heel, the foot is bowed upwardly or otherwise formed to present only the tip and heel bearing points so that differences in longitudinal curvature of last bottoms are accommodated. Preferably the tip is held down for initial engagement and for pressure yieldingly at the toe of the shoe while the heel comes down unyieldingly and effects the rigid clamping of the shoe down upon the toe rest. It is important that the holddown shall rigidly resist upward displacement of the shoe and it is an advantageous feature in an automatically apphed holddown that the initial engagement shall be proximate only and that manually operated means, the extent of movement of which can be regulated according to each individual shoe, shall be employed for effecting the final holding pressure.

It is also a feature of this invention that the holddown is made automatically to release the shoe and is removed to its inoper ative position ready to permit the shoe to be taken from the machine. This is done as an incident to the unjacking operation. This inoperative position of the holddown is an upright position in which the hand lever by which final shoe clamping ressure was ap-' plied can return automatica ly by gravity to its starting relation to the holddown lever.

It sometimes happens that an operator will wish to get the holddown away from the shoe after it has served its main purpose and before he is ready to unjack the shoe. To provide for this is another feature of this invention. To this end as here shown the train of mechanism by which the holddown is operated from the power shaft includes a detachable or a lost mot-ion connection which can be manually operated at any time to allow the holddown to be lifted from the shoe. A spring is provided for so lifting the holddown.

These and other features of this invention, including certain details of construc tion and more important combinations of parts will appear in connection with the following description of the machine in which a preferred embodiment of the machine is explained.

Figure 1 represents a vertical cross-sec tion of a lasting machine provided with my invention, taken just to the rear of the holddown device. Fig. 2 is a perspective view of an embodiment of my invention, only the supporting portions of the machine frame being shown. Fig. 3 is. a sectional detail on the line 3-3 of Fig. 1. Fig. 4 is a sectional detail on the line 4-'-4 of Fig. 1.

Referring first to Fig; 1, the numeral 1 indicates the main frame of the machine in which is journaled a cam shaft 2. The cam shaft carries a series of cams from which the shoe jacking devices and, it may be, various other parts of the machine are oper ated and the shaft is rotated either by connection with a pedal or by power means as ing wipers and is adjustable longitudinally of the machine by'a screw operated from the hand wheel 4 all as set forth in the patent above referredto.

ably held thereto by screws passing through the block into the body of the toe head. The block 5 carries/a pin 6, the free end of which engages a groove 7 in the hold-down carriage 8 which is mounted for sliding movement with the toe head longitudinally of the machine upon the T-shaped bracket 12 which is secured to the frame of the machine. The lower portion of the groove 7 in stantially the width of the pin so that the hold-down carriage is accurately positioned lengthwise of the. machine and the shoe by the adjustment of the toe lasting head 3. The rear side of the groove is formed by a lasting head and the pin 6 to be advanced relatively to the hold-down when said head has been lifted into the position for the wipers to close over the shoe bottom. This provision permits the head 3 to be advanced by the hand wheel 4 for causing the wipers to seat the upper snugly against the lip or rib of the insole while the hold-down is stationary and firmly clamps the shoe down upon the toe rest. Screws 11 and slots in the plate 10 permit vertical adj list-ment of the plate.

The carriage 8 has a socket in which is vertically movable the depending stem of a T-shaped block 36. To the inner lateral arm of this block 36 a link 34 is pivotally connected at and at 33 said link has a pivotal connection with the lever 32 which is fulcrumed at 26 to the upper end of the hold-down carriage 8. By means of this connection the lever 32 is adaptcdto be turned upwardly about the pivot 26 from the position shown in Fig. 1 when the block 36 is raised. The hold-down is supported on the inner end of this lever as will be dedown is moved from the operative position shown in Fig. 1 into a substantially vertical removed therefrom. Connections are provided which will shortly be described for swinging the lever 32 and the hold-down from the upright position above mentioned into approximately the osition shown in Fig. 1 simultaneously Wit the shoe jacking Mounted upon the vertically movable and horizontally adjustable toe head 3 to the right in Fig. 1 is a block 5 which is adjustwhich the pin 6 normally stands is of sub scribed so that by this movement the hold-.

is usual. The toe head 3 carries the toe-last plate 10 which is shaped to allow the toe inoperative position which it occupies while the shoe is being put into the machine and operation and reversely moving said parts when the shoe is unjacked.

The inner or left hand end of the lever 32 has a smooth bearing for an internally threaded nut which is confined on the lever by the collar 341 and set screw as shown in Fig. 3. This nut 30 adjustably supports the threaded post 25 to the head of which is pivoted at 29 a lever 19. Upon the upper face of this lever 19 a hold-down arm 16 is rigidly mounted for adjustment by a tongue and groove connection and is secured in adjusted position by a clamping screw 23. The hold-down arm extends transversely of the machine and shoe and its inner end is bent forwardly. Upon this forwardly bent portion of the arm the holddown finger 15, which is the element of the hold-down that directly engages the shoe, is secured by the headed stud 18. The connection effected by this stud is a somewhat loose one that ermits the finger to be turned laterally or positioning its tip end centrally over the particular shoe that is in the machine. This loose connection also permits a slight pivotal movement of the finger about a horizontal axis extending transversely of the shoe. The rear end of the finger 15 is provided with a downwardly extending protuberance or heel located under the forwardly bent portion of the rigid arm 16. The tip end of the finger is depended upon for holding down the end of the innersole upon the last bottom to prevent it from being lifted by the action of the wipers. The heel end of the finger is dependedupon for the downward clamping pressure by which the shoe is held down upon the toe rest C. A spring 14: is secured to the top face of the arm 16 by the screw 17 and the bolt 18 and has a downwardly bent end that rests upon the finger 15 to keep its tip end normally turned down as shown in full lines in Fig. 4.. It is with the finger in this relation to the arm 16 and the shoe that the initial engagement of the finger with the shoe is made. The finger is of appropriate length to engage the rear face of the channel lip or rib of a welt innersole and when the hold-down is forced downwardly into shoe clamping position shown in dotted lines in Fig. 4 the tip end of the finger has a slight forward movement to press firmly against the rib of the innersole. This movement straightens or slightly presses the inner sole forwardly and brings the finger into firm abutting relation to the lip or rib. As above suggested, the hold-down is moved into clamping relation to the shoe by an initial movement effected automatically during the jacking operation and provision is made for a final manually efiected movement. For these purposes the rearwardly projecting lateral arm of the block 36 is connected by a link 38 having a bearing 40 with a rod 42 upon which the bearing slides lengthwise of the machine in the adjustment of the hold-down carriage with the toe lasting head by means of the hand wheel 4. The rod 42 is carried on the head 46 of the hold-down post 48 which is movable vertically in the sleeve 52 formed on a bracket 56 carried by a bracing rod 54 of the machine frame. The post 48 has a foot 58 to which is pivotally connected at 66 a link 62 the lower end of which is pivoted at 61 to the bifurcated end 71 of a lever 74 which is fulcrumed at its left hand end, Fig. 2, to the frame hangers 100 at 102. The lever 74 has a cam roll 106 in position to be engaged by a cam projection 113 on the cam shaft 2. This cam turns in time relation to the shoe jacking apparatus which includes the cam 115 connected through the lever 116 and link connections 120, 121 with the heel jacking devices and the cam 125, slide 126, and rod 128 which engages the post of the toe rest C, all as more fully explained in said prior patent.

The cam 113 depresses the lever 74 and the hold-down post to swing the lever 32 and the hold-down from the vertical inoperative position into the horizontal position indicated approximately by the full line representing the hold-down arm 16 and lever 19 in Fig. 1. This full line position of the hold-down is approximately its operative position and permits the adjustment of the finger 15 into desired relation tothe innersole for forcing the hold-down into shoe clamping position. The rear end of the lever 19 is slotted to receive the hand lever 28 which is fulcrumed on the pin 26 that carries the lever 32 and said hand lever has a cross pin 27 that stands in a slot in the lever 19. This arrangement is such that the movement of the lever 28 by the operator from the full line osition in Fig. 1 to the dotted line position lifts the right hand end of the lever 19 and depresses the hold-down. As this depression occurs the finger 15 moves against, the resistance of the spring 1-l until the heel portion, as well as the tip end, is brought into firm clamping position. 'hen the cam shaft is again rotated for unjacking the shoe the cam 113 allows the lever 74 and hold-down post 48 to rise and tip the hold-down lever 32 in the directionfor ele vating the hold-down from the shoe and turning it to its inoperative position where it is not in the way of the operator during the removal of the shoe from the machine.

Provision for allowing release of the holddown before the unjacking operation comprises a knee pad 86 on a push rod 87 which is guided at 111 in the lever 74. The rod acts through an arm 88 of a lever 82 to turn the lever about its fulcrum 8.4 and retract a locking bar 75, which is connected with the lever at 85, from a notch in the link 62.

The locking bar slides in a boss 78 in the lever 74 and by its connection 75, with the link 62 the cam movement is transmitted to the hold-down post 48. Pressure on the knee pad 86 effects withdrawal of theloeking bar 75 from the notch 80' and allows the link 62 and the hold-down to rise with relation to the lever 74, a slot 69 being provided in the lower end of the link 62 to permit this movement. If the knee pad and its connections are not to be employed the slot '69 will be omitted and the lever 74 will be connected at 61 with the link 62 without any lost motion.

A spring 90 extends from a stud 92 on the foot 58 of the hold-down post to a stud on the frame bracket 52 and effects the lift ing of the hold-down from the work when the turning of cam 113 or the withdrawal of locking bar 75 permits the spring to act. A second spring 117 exte ding between a lug 135 on the lever 74 an a. stud 119 on the frame normally maintains the rear or right hand end of the lever 74 and its attached parts in elevated position.

In the use of the machine the shoe will'be applied to the machine and will be jacked in the usual way as described in said prior patent. This jacking operation includes the lifting of the toe rest C by 'the connection 128. 126 with the cam 125. Simultaneously with the lifting of the toe end of the shoe by the toe rest the hold-down is swung down upon the shoe bottom by the action of the cam 113 so that the machine efi'ects automatically a lifting of the shoe from below and a clamping of it from above. The firm-. ness of this automatically effected clamping by the hold-down will be regulated by ad justing the hold-down vertically with rela-' tion to lever by manipulation of the adjusting device 30. Preferably this adjustment will he made to cause the shoe to be clamped yieldingly from above by the front end of the spring finger 15. Thereafter the operator will effect any positioning-of thefinger 15 which may be desired and then actuate the lever 28 to rock the holddown into firm clamping engagement. of the shoe at the heel as well as at the tip of the finger 15.

lo will then proceed with the lasting operallOH including the stretching and overwiping of the upper by means of the wiper plates B actuated by the land lever A and the lifting of the wiper plates in rubbing contact with the upper along the sides of the toe by the usual lifting treadle, all as fully described in said prior specification. 'hen the shoe has been lasted the hold-down will be automatically released and lifted from the shoe simultaneously with or as a part of the unjacking operation. If, however, the operator desires to remove the hold-down from the shoe bottom before the shoe is to be unjaclzed as sometimes will occur he will effeet this result by pressure upon the knee pad 86 to withdraw the locking bar 75 and secure by Letters Patent of the United States is: I

l. A lasting machine having, in combination, toe lasting means, shoe resting'means, devices for actuating said two means, and a hold-down which is moved automatically transversely of the shoe in a plane perpendicular to the shoe bottominto and out of operative position, substantially as and for the purpose described.

2,. A lasting machine having, in combination,. toe lasting means, a hold-down occupying normally a position at one lateral side of the shoe and movable over the shoe bottom and also downwardly toward the shoe bot tom for engagement with the work, a toe rest, means for raising the -toe rest, and means for automatically imparting the described movements to the hold-down when the toe rest is raised.

3. A lasting machine having, in combination, toe lasting means, a hold-down occupying normally a 'positionvat one lateral side of the shoe and movable over the shoe bottom and also downwardly toward the shoe bottom for engagement with the work, a toe rest, means for. raising the toe rest, means for automatically imparting the describedlock for completing the downward movement of the hold-down and fastening it after said automatic actuation.

4. A lasting machine having, in combination, toe lasting means, a hold-down mounted to occupy normally a position at one lateral side of the shoe and movable over the shoe bottom and also downwardly toward the shoe bottom for engagement with the work, a toe rest, means for raising the toe rest, means for automatically imparting the described movements to the hold-down, and a locker 28 formanual manipulation to fasten the hold-downagainst upward displacement and by which complete depression of the hold-down is effected after approximate positioning antomatically has taken place.

5. A lasting machine having, in combination, toe lasting means, shoe jacking means, a hold-down, actuating means for effecting jacking and unjacking of the shoe and simultaneous application and release of the holddown, and additional means for disconnecting the hold-down from the unjacking means for effecting release of the hold-down at the will of the operator.

6. A lasting machine having, in combination, toe lasting means, a toe rest for the last, a hold-down, jacking means for moving the shoe vertically through a predetermined distance and automatically moving the holddown toward the plane of the shoe bottom,

and manual locking means for the holda hold.down, a single actuating means for effecting the jacking of the shoe and the application of the hold-down, and additional means for moving the hold-down independently for the purpose described.

8. A lasting machine having, in combination, toe lasting means, shoe jacking means, a hold-down, actuating means for eficcting jacking of the shoe and movement of the hold-down transversely across the shoe bottom from the position it occupies during the presentation of the shoe to the machine into approximate shoe clamping position, and supplemental means for thereafter actuating the hold-down perpendicularly to the shoe bottom to, apply shoe clamping pressure.

9. A lasting machine having, in combination, toe lasting means, a toe rest for the last, a hold-down, connected mechanism for raising the toe rest and automatically moving the hold-down downwardly toward shoe clamping position and manual means for thereafter further actuating the hold-down independently in the direction to apply shoe clamping pressure.

10. A lasting machine having, in combination, toe lasting means, a toe rest for the last, a hold-down, connected mechanism for raising the toe rest and automatically moving the hold-down downwardly toward shoe clamping position, said hold-down comprising a foot that can be adjusted for positioning it relatively to the particular shoe after such automatic actuation, and manual means for thereafter further actuating the holddown independently in the directlon to apply shoe clamping pressure.

11. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down for clamping the shoe down upon the resting means prior to the lasting operation and which is adapted to engage the shoe bottom centrally of the width of the shoe, and means actuated in time relation with the operation of one of said other means and without attention from the operator to produce movement of the holddown transversely of the shoe from an inoperative position to an operative position.

12. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down, means actuated automat-ically to effect positioning of the holddown transversely of the shoe and a proximate application of the hold-down to the shoe, and additional manually operated means which may be employed if necessary to effect final down holding application or further clamping pressure of the holddown.

13. A lasting machine having, in combination, toe lasting means, shoe resting 1: cans, a hold-down, means for actuating the hold-down transversely of the shoe and also perpendicularly to the shoe bottom into operative relation to the shoe automatically, and means for adjusting the holddown with relation to the actuating means to cause more of less close application of the hold-down to the shoe bottom to be effected by the automatically acting means.

14. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down, means actuated withoutspecial attention from the operator to move the hold-down from a position in which it is not over the shoe to a position over the shoe bottom, said hold-down comprising a foot, a lever carrying the foot, and a hand lever eccentrically engaging the carrying lever to rock the foot down and lock it.

15. A bed lasting machine having, in combination, toe lasting means, a cam shaft, a toe rest located directly above the cam shaft to be lifted thereby, a hold-down, a lever under the cam shaft in position to be actuated thereby, and a connection from the lever to the hold-down to pull the holddown toward the shoe bottom when the toe rest is lifted.

16. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down comprising a foot having a tip end adapted to engage the innersole on the inner side of the channel lip at the toe, a support on which the foot is carried for limited lateral turning movement and with its tip end inclined downwardly to engage the shoe first, a spring 14 attached to the support and overlying the foot to give rigidity thereto, and means for actuating the support downwardly to cause the foot to straighten toward horizontal posi- 1t i0n and press forwardly against the channel 17. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down comprising a foot having a tip end adapted to engage the innersole on the inner side of the channel lip at the toe and a heel end to engage the shoe at the ball. a support on which the foot is carried with its tip end yieldingly inclined downwardly, actuating means for effecting movement of the hold-down to present the tip end in engagement with the shoe, and additional means for forcing the heel into clamping engagement with the shoe.

18. A lasting machine having, in combination, toe lasting means, shoe resting means, a hold-down, automatic means for actuating the hold-down automatically to approximate shoe clamping position, and manually operated means for thereafter further actuating the hold-down, said holddown comprising a foot and a support on which the foot is movably-mounted to permit adjustment relatively tothe shoe between the automatic and the manual actuation thereof.

19. A lasting machine having, in .combination, toe lasting means, shoe resting means, a hold-down, means for actuating the hold-down automatically to approximate shoe clamping position, and manually operated means for thereafter further actuating the hold-down, said parts being constructed and arranged to cause the hold-down to exert a slight forward pressure against the innersole without special attention from the operator during the final manually effected actuation.

20. A lasting machine having, in combination, toe' lasting means, a toe rest, a hold down, a cam shaft, means for actuating the cam shaft, and connections from the cam shaft to the toe rest and to the hold-down arranged to raise the rest and to swing the hold-down from an inoperative position on one side of the shoe to a position over the shoe.

21. A lasting machine having, in combination, toe lasting means, a toe rest movable to jack the shoe, a hold-down, manual means to actuate the hold-down to clamp the shoe on the rest, a cam shaft, and connections to release the hold-down and move its actuating means in a direction reverse to that in which it was manually moved.

22. A lasting machinehaving, in combination, toe lasting means, a hold-down, actuating means to move the hold-down from an inoperative position approximately to shoe clamping position, additional means to move the hold-down to clamp the shoe, and one returning means arranged to move the holddown to initial position and to reset the said additional means.

23. A lasting machine having, in combination, toe lasting means, a hold-down and op erating means therefor including a cam shaft, a lever, a hold-down post, a latch carried by the lever and engaging the post, means for actuating said cam shaft, connections to move the hold-down toward operative relation to the shoe and maintain it for the toe lasting operation, and means to withdraw the latch for releasing the hold-down at will.

24. A hold-down foot comprising a" depressed tip-end adapted to engage the innersole on the rear side of the channel lip at the toe and a heel or rear end bearing face to engage the shoe over the ball; and a resilient backing engaging said foot between its ends.

25. A hold-down comprising a foot having a depressed toe engaging portion and an unyieldingly supported ball engaging portion, a support for said ball engaging portion and a resilient backing secured to said support and bearing on said foot between said toe engaging and ball engaging portions.

26. A hold-down comprising a foot having a toe for engaging the innersole at the toe 'behind the channel lip and a heel for engaging the ball of the innersole, said toe being depressed to engage at the toe before the heel engages at the ball, unyielding means for supporting said foot, and means aside from the foot itself for rendering the pressure of the toe resilientl 27. A hold-down comprising a lever, a resilient hold-down finger 15 mounted on the under side of the lever, and a leaf spring 14 carried on the upper side of said lever and adapted to engage the finger between its ends to reinforce the finger.

28. A lasting machine, having, in combination, toe lasting means, shoe resting means, a hold down, and means for actuating the hold down toward the shoe resting.

means to cause it to clamp the shoe on said resting means, said parts being constructed and arranged to cause the hold down to exert automatically a slight forward pressure against the innersole during its final shoe clamping movement and without special at tention from the operator.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS M. BROWN.

Witnesses:

CHESTER E. Rooms, LAURA M. Goomunon.

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