US1864631A - Sole slashing machine - Google Patents

Description

June 28, 1932. w Q BAXTER 1,864,631-

SOLE SLASHING MACHINE Filed July 21, 1930 67 1 W flu e J u kw 66 Patented June 28, 1932 UNITED STATES PATENT; OFFICE;

WILLIAM c. BAXTER, E EEvEELY, MASSACHUSETTS, AssIe voE 'ro UN ED sHoE MACHINERY CORPORATION, or IPATERSON, NEW JERSEY, A CORPORATION on? NEW JERSEY Application filed-July 21,

. January 5, 1915 on an application 'of W. C.

Stewart, wherein is represented a machine of well-known "commercial construction equipped with mechanism for predetermining the number of slashes to be imparted to a sole.

.. slashes from the knife.

2 operation. having connectlons for locating the sole-posi- An important field of use of my invention is in connection with machines of the type disclosed in Patent No.. 1,124,182 and for purposes of illustration it will be described in this connection. In such machines the sole is operatively positioned with respect to the slashing knife by being bent or deflected about a supporting member and thus held and positioned properly for receiving oblique The number of consecutive slashes imparted tothe sole'depends upon the length of time it ispositioned by the sole-deflecting means and in the machine of said patent automatic mechanism is provided for moving a sole-positioning element: to an 35 I inoperative position after a predetermined number of slashes, forthe purpose of releasing the sole and terminating the slashing Treadle mechanism is provided -soLE SLASHING MACHINE 1930. Seria1No.' 4 69,372. I

layed and the sole is subjected tosuperfluous slashes which may injure its usefulness.

My invention contemplates improved controllingmechanism for a sole'slashing machine characterizedby provision for interrupting the effective connection between the treadle mechanism and the movable element of the sole-deflecting meansafter-the clutch has been tripped, with the result that the sole-deflecting means is rendered independent in its sole-releasing movement of the treadle mechanism and free to be timed in itsmovement bythe action of the mechanism forautomatically determining thenumber of consecutive slashes to be imparted to the sole. By theprovision of such mechanism the operator is relievedof the exacting attention otherwise required in the operation of the machine and thedanger of soles damaged by excessive slashingv is practically eliminated. Y

'Another feature of the'invention consists in a novel end gage by, which the machine is adapted for handling soles of smaller sizes than heretofore and its range 'of usefulness thusincreased. The gage is so constructed that it may be located in close proximity to the.sole-deflecting elements of the machine and displaced temporarily in the bending operation. l i

These and otherfeatures of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which Fig. 1 is a View of the machinein side.

elevation, partly in section;

Fig; 2 is a sectional view of the clutch mechanism on the'line 22 of Fig. 1 and Fig. 3 is a fragmentary view of the end gage. v a As in the machine shown in the patent above identified, the head frame 10 is supported at a convenient height from the floor upon a column 12.- In thehead is journaled the main operatingshaft l luponwhich are mounted the pulleys, clutch and operatingcams. Inclined ways are provided within the i head for a 'reciprocatory cross-head -16 which is mounted the slashing knife 18. The cross-head is actuated by an eccentric on the main shaft 14 and connections, not shown. The sole to be slashed is initially presented to the machine upon a work table 22 and positioned lengthwise by an end gage 26 mounted upon a rear work table 24 suitably mounted in the machine head. Edge gage pins 27, one of which is shown, are provided for relatively locating the sole-and slashing knife in a transverse direction.

The sole is fed through the machine by an intermittently-operated toothed feed roll 28 against which it is pressed during the feeding movement by a presser roll 30 movably 'mounted beneathit. For the slashing operation the sole is bent or deflected about av stationary sole-supporting form 20 adjust-ablymounted in the head frame slightly above the position occupied by a sole as presented to the machine upon the work table 22. Cooperating with the stationary supporting member 20 is a movable. deflect ing roll 32 which is journaled to rotate in a yoke member 34 and is moved upwardly by the yoke tobend the sole against'the surface of the support 20.. The yoke 34 is pivotally mounted upon a transverse shaft 35 and at oneend carries a pivot pin 38, to which is connected'the upper end of an operating lever 36 pivotally mounted upon the head frame by a pivot 40. The yoke 34 is lifted to move the deflecting roll 32 into operative pos tion by the movement of the lever 36 in a clockwisedirection about the axis of the pivot 40, as will presently appear. 7 A

To the pivot pin 38 on the yoke 34 is also connected a toggle link 42 and this in turn is connected through a slip connection to a second toggle link 43 having a stationary pivot in ,the head 10. A spring 41 tends normally to straighten the toggle 4243 and thus to maintain the sole-deflecting roll 32 locked in its operative or elevated position. A tension spring 78 acts always to swing the lever 36in a counterclockwise direction and the spring 78 is strong enough to overcome the action of the toggle spring 41 whenever the toggle links are moved out of their Y straightened position and to cause them to assume the broken position shown in Fig. 1, in which the deflecting roll 32 is located in its inoperative position. v I

. The toggle 42- 43 is broken by the action of a striker head 44 carried by an inclined rod 45' at theupper end thereof. The rod 45 comprises a part of the mechanism for predetermining the number of consecutive slashing strokes to be made by the knife 18. Itv is provided witha collar and it is encircled by a compression spring 46 bearing against the collar on the rod, which tends always to retract the rod and maintain it in its lowermost position, as shown in Fig. 1. Thelowerend of the rod stands in the path above referred to.

l The clutch mechanism will nowbe briefly described. The main shaft 14, as shown in Fig. 2,.is provided with a longitudinallymovable bushing or sleeve 50 having a flange 51 at its left-hand end and furnishing a journal for the driving pulley 52. The hub of the driving pulley is extended to form a journa'l for the loose pulley 54 and the latter is retained in place upon the hub by a retaining collar. The head frame 10 is provided with an annular flange concentric with respect to the shaft 14 in which is adjustably mounted a stationary brake ring 60, and between the stationary brake ring and the driving pulley 52 is dis osed thefriction member 56 of the clutch. T e friction member is provided with a tapering clutch face 57 which cooperates with a corresponding annular clutch face of the driving pulley 52. At its other end it carries a ring member 59, to which is secured a brake ring 58 of friction material. The friction member 56 also includes a collar 62, in which are formed transverse ways for a bifurcated wedge member 64. The arms of the wedge member 64 are shown in cross .section in Fig. 2 and in dotted lines in Fig. 1. The hub of the driving pulley is chambered at its right-hand end to receive a washer 66and a compression spring 67 which bears against an adjustable collar 68 on the outer end of the shaft 14 and tends at all times to move the sleeve 50 and the dr1ving pulley toward the left or into clutching engagement with the friction member of the clutch. The flange 51 of the sleeve 50 isprovided with a pair of longitudinally-extending pins 53 which, through the medium of a hardened washer, bear against the collar 62 of the clutch friction member.

When the wedge member 64 is moved inwardly, as shown in Fig. 1, the collar 62 is pushed toward the right and the sleeve 50 with the driving pulley is moved toward the right through the flange 51, with the result that the clutch surfaces are separated and the pulley 52 may run freely. At thesame time, the wedge member 64 pushes the friction member through the ring 59 to the left to bring its brake. surface against the stationary brake ring and so bring the main shaft at rest and hold it in such position. When the wedge member is retracted, by mechanism which'will be presently described, the spring 67 acts to shift the sleeve and driving .9 is pivotally mounted a pawl 87 having a pulley toward the left until the clutch sur faces engage, thus setting the shaft in motion. At the same time, the pressurejof the pins against the collar 62 is relieved and the pressure of brake engagement thus relaxed. The mechanism above discussed corree sponds substantially to. that illustrated in detail in said Patent No. 1,124,182 and has beenherein described to assist in a clear understanding of the present invention. The novel mechanism for controlling the clutch and the movement of the sole-deflecting roll 32 will-now be explained. This-mechanism is carried in'part by a stationary bracket bolted to the head 10 and provided with an upper branch 72 and alower branch 71 which are provided with vertical aligned bearings. A short rod 74, which is in effect a part of the treadle rod, is mounted-for vertical movement in the upper branch 72 of the bracket and is provided at its upper end with a forked head 76 connected tothe lever 36 by means of a pivot 77. The tension spring 78 already referred to is connected at its upper end to the pivot pin 77 and at its lower end to a stationary pin projecting from the upper branch 72 of the bracket. At its lower end the short rod 74 carries a square block 80 and a transversely-extending pivot pin 81.

The lower branch 71 of the bracket 70 form a bearing for the upper end of a treadle rod 110 mounted forvertical movement in line with and below the short rod 74. The treadle rod 110 is connected at its lower end to a treadle 116. It is encircled by a compression spring 114 bearing against an'adjustable collar 112 and is thereby normally" urged downwardly. Near its upper end the treadle rod 110 carries an angular bracket 86 in which downwardly-extending tail 88 and being notched at its upper end to engage the block 80, which is secured to the lower end of the short rod 74. The pawl is normally moved into engaging position by a. compression spring received in the socket in the bracket 86 and bearing against the tail 88 of the pawl. It will be apparent that when the treadle 116 is'depressed by the operator and the treadle rod 110 lifted, the pawl 87 will afford an operative connection with the rod 74 so that it too will be lifted, swinging the lever 36 upwardly, straightening the toggle 42-43 and locating the sole-deflecting roll 32 in operative position.

Elevation of the treadle'rod 110 is also effective to tripthe clutch of the machine through mechanism which will now be described. The wedge member 64 is connected at its outer end to ashifting lever 94 pivotally mounted upon a pivot pin 95 projecting from the head frame. Suspended from the pivot stud 95 for free movement about the axis thereof is a cam arm 97 having in its lower end a cam roller which is arranged to run upon the periphery of a cam 96 on the friction member 64 of the clutch. The cam 96 has a single throw, as shown in dotted lines in Fig. 1, whichis arranged to swing the cam arm 97 toward the left at the proper point, tends always to swing the leverin a counterclockwise direction and retract the wedge member 64 of theclutch. Movement of the shifting lever 94 in the opposite direction, that is to say in a direction to'advance the wedge member 64, is effected by the cam 96 acting through the straightened toggle 98-99. I The toggle is shown in its straightened condition in Fig. 1, the wedge member being fully advanced and the inachine-in stopped position. hen the toggle is broken, the cam arm 97 is merely oscillated idly by the rotation of the cam 9 5 r .A horizontally-disposed lever 82 is pivot ally mounted upon astud 84 projecting outwardly from the bracket 70. This lever has a slot connection at itsleft-hand end with the pivot pin 81 of the block 80 on the lower end of the short rod 74. At its right-hand end it has a slot connection with the pivot pin of the toggle 9899. This lever is so proportioned that when the treadle is depressed it will be swung in a clockwise direction, breaking the straightenedtoggle 98-99 and will thus permit the spring 102 to swing the lever 94 and retract the wedge member, thus tripping the clutch in the manner already explained.

The pawl 87, as already explained, is normally held in position to engage the block 80 by the compression spring 85. It is moved in the opposite direction to disengage the block 80 by the action of an angular cam lever 90 pivotally mounted uponthe stud 84 and carrying an adjustable stop screw 89 which, when the treadle rod is elevated, is located opposite to the tail of the pawl 87. At its right-hand end the cam; lever 90 is pro-' vided with a cam roll which runs'upon the ifT-i periphery of a cam 92 located on the friction memberof the clutch. beside the cam 96 and having a throw in substantially the same an gular position as the cam 96. The lever 90 is held against the periphery of this cam by 7111 a tension spring 93 extending upwardly :from it to astationary' pin on the bracket'70. When the clutch hasbeen tripped to start the ma chine and the cam 92 rotated, the lever 90 is swung downwardly and the pawl rocked and disengagedfrom the block 80, thereby interrupting the effective connection between the treadle rod and-the movable element of" the sole-deflecting means and alsoits effective connection to the clutch-controlling lever.

That feature of the invention which relates more particularly to the novel end gage will now be described. Upon the rearwork table 24 is mounted a slide or carrier member 261 which is adjustable lengthwise of the sole or in a direction to locate the gage nearer to or further from the sole support 20. The slide 261 may be clamped in any position of adjustment by a clamping bolt passing through it and the table 24 and having a thumb nut conveniently disposed below the table. At its forward end the slide 261 is provided with a pair of spaced upstanding earsbetween which extends a horizontally-disposed shaft 260. The gage member 26 is substantially bailshaped and is mounted to swing up and down about the shaft 260 as an axis, its effective gaging surface being located beyond the end of the slide 261. The gage normally stands in the position shown in Fig. 1 with its gaging face substantially vertical, being yieldingly retained in that position by a torsion spring encircling the shaft 260 and bearing against the gage member 26. In Fig. 1 an ins-ole is shown as having been presented to the machine and gaged by the gage member 26.

In machines as heretofore constructed, it has been necessary to maintain the gage member in a position sufficiently remote from the sole-deflecting members to permit the movement of the sole-deflecting roll 32 into operative position. In the case of short soles, this has been inconvenient because when so limited the gage has not positioned a short sole properly for the first slashing operation. In accordance with the construct-ion of the present invention, however, the gage may be advanced to a position above the deflecting roll 32 and then when the latter is lifted to bend the sole about the sole support 20, the gage member 26 is displaced angula-rly about the shaft 260 and can freely assume an inclined position, such as'shown in Fig. 3.

The operation of the machine will be apparent from the foregoing description but for convenience may be summarized as follows. Having presented a sole and properly located it lengthwise upon the table by means of the gage, the operator will depress the treadle 116 and lift the treadle rod against the com pression of the spring 114. The pawl 87 being engaged with the block 80 will lift the short rod 7 4, swinging the lever 36 upwardlyand lifting the deflecting roll 32 so that the sole is bent against the sole support 20. In this movement the toggle links 42-l3 are straightened so that the deflecting roll is temporarily locked in its elevated and operative position. The liftingof the short rod 74 also swings the lever 82 to break the toggle 9899, whereupon the spring 102 i's'free to swing the lever 9 in a direction to retract the wedge member 64. The clutch is thus tripped and the main shaft it set in motion. In the.

first cycle of the machine the cam 96 acts to swing the lever 90, releasing the pawl 87 from its engagement with the block 80. The result i's that the effective connection between V the treadle rod 110 and the sole-deflecting roll 32 is broken and the latter is no longer under the control of the treadle rod but free to drop at the instant whenthe toggle 42-43 is broken by the action of the rod 45 and the timing mechanism The efiective communication between the treadle rod and the clutch-controlling lever 82 is also broken. \Vhether the operator holds the treadle down or not this is true and the possibility of sub- H jecting the'sole to an unnecessary and excessive slashing is thus avoided.

Vhen in the normal operation of the timing mechanism the striker 44 is advanced and the toggle 4243 broken, the tension spring 78 at once moves the short rod 7 L downwardly, swinging the sole-deflecting roll 32 to its inoperative position. It also swings the lever 82 downwardly at its'right-hand end, straightening the toggle 98- 99 so that in the proper point in the cycle the cam 96,

. roll'interferes in no way with the sensitive operation of the clutchtripping mechanism. Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: i V

1. A sole slashing machine, havingin combination, sole-supporting means, a movable sole-deflecting member cooperating with said supporting means, a reclprocatory slashing knife, actuating mechanism therefor including a clutch, and treadle-operated mecha- I nism for simultaneously moving the soledeflecting member to deflect the sole and for tripping the clutch, said mechanism being arranged to be disconnected from the deflecting member whereby the latter may be controlled independently of the treadle mechanism after the machine is started.

2. A sole slashing machine, having in combination, sole-deflecting means, a power-operated knife, actuating mechanism for the knife including a clutch, treadle mechanism for operating the sole-deflecting means and for tripping the clutch, and means for interrupting the eflective connection between the treadle mechanism and said sole-deflecting means when the clutch is tripped.

47 anism for operating the sole-deflecting means or: t

and for tripping the clutch, said mechanism including rods mounted for movement in aligned paths and connections whereby the two rods may be moved simultaneously in starting the machine and independently thereafter.

4. A sole slashing machine, having in combination, sole-deflecting means, a power-operated knife, actuating mechanism for the 1 knife including a clutch, and treadle mechanism for operating the sole-deflecting means and for tripping the clutch, said mechanism including a treadle rod, a pawl and connections to the sole-deflecting means arranged to be disengaged by a movement of the pawl after the treadle rod is moved to a predetermined position in starting the machine.

5. A sole slashing machine, having in combination, a power-operated knife. actuating mechanism therefor including a clutch, solepositioning means arranged to be moved to inoperative position after a predetermined number of slashing operations on the sole, treadle mechanism for locating the sole-positioning means and for tripping the clutch, and means for interrupting the effective connection between the treadle mechanism and said sole-positioning means after the clutch has been tripped.

6. A sole slashing machine, having in combination, a power-operated knife, actuating mechanism therefor including a clutch, a sole-positioning element arranged to be moved to inoperative position after a predetermined number of slashing operations on the sole, treadle mechanism for locating said sole-positioning element and for tripping the clutch, and trains of mechanism extending from the treadle mechanism to the sole-positioning, on the one hand, and to i the clutch on the other hand, both arranged to be interrupted after the machine has been started. Y

7. A sole slashing machine, having in combination, a power-operated knife, actuating mechanism therefor including a clutch, a sole-positioning element arranged to be moved to inoperative position after a predetermined number of slashing operations 011 the sole, an actuator for timing such move-- ment of said element, treadle mechanism for initially locating said sole-positioning element in operative position, and means for interrupting connection between said treadle mechanism and said sole-positioning, element after the clutch is tripped, for the purpose of placing thesole-locating element under the exclusive control of said actuator.

8. A sole slashing machine, having in combination, means for positioning and slashing a sole, including a sole-deflecting roll, treain operative sole-deflecting position, automatic means for disconnecting said treadle mechanism from the sole-deflecting roll after the r oll has been so established in operative position, and automatic mechanism operative to retract said roll at a predetermined point in the cycle of the machine after it has been so disconnected from thetreadle mechanism.

9. *A sole slashing machine, having in combination, means, including a sole-deflecting roll, for positioning a sole, a slashing knife, treadle mechanism operative to establish said roll in sole-deflecting position and then to be disconnected therefrom, and automatic mech anism'operative to cause the roll to move to an inoperativepositi0n when so disconnected and after a predetermined number of ma chine cycles have been completed.

l0. A sole slashing machine, having in combination, a sole-deflecting element movable to and from sole-deflecting position, a

slashing knife, actuating mechanism therefor including a clutch, a two-part treadle rod movable as a unit for establishing said soledefiecting eiementin operative position and for tripping the clutch, a releasable connection between the parts of the treadle rod, and

cam-operated means for breakingsaid connection andrendering one part of the rod independent of the other after the clutch hasi been'tripped.

i 11. A sole slashing machine, having in combination, a sole-deflectingelement movable to and from sole-deflecting position, a slashing knife, actuating mechanism therefor including a clutch, a two-part treadle rod movable as a unit for establishing said element in sole-deflecting position and for tripping said clutch, a pawl carried by one part of the treadle rod arranged to engage the other part thereof, a cam arranged to be rotated when the clutch is tripped, and a cam lever operated thereby for releasing said pawl.

12. A sole slashing machine, having in combination, a roll movable to and from soledeflecting position, a knife for slashing a sole while deflected thereby, actuating mechanism for said knife including a clutch, a two-part treadle rod having a pawl connection between its parts and being movable as a unit to establish said roll in sole-deflecting position and to trip the clutch, one part of said rod being connected to a. treadle, and cam-operated means for releasing said pawl after the clutch has been tripped thereby disconnecting the trea combination, a slashing knife, and means for positioning a sole for the knife, includiii ing a bodily movable soleedeflecting roll, and o a sole end gage arranged to be displaced by engagement with said roll. 7 I

14. A sole slashing machine, having in combination, a slashing knife, and means for positioning. a sole for the knife, including asole support, a sole-deflecting roll adjacent to the support and movable to bend asole thereupon, and a sole end gage normally 130- sitioned to locate a sole with respect to said support and movably mounted for displace-- ment by engagement with said roll in the soleas the sole is presented between said support,

deflecting operation. 7

15. A sole slashing machine, having in combination, a slashing knife. and means'for positioning a sole for the knife, including a sole support and a roll relatively movable to bend a sole between them, and a pivotally monntedend gage arranged to locate a sole and said roll and to be displaced by engagement with one of said parts in the sole-bend.- ing operation.

16. A sole slashing machine, having in combination, a slashing knife, and means for positioning a sole for the knife, including sole-deflecting members relatively movable to bend a sole between them, a gage carrier adjustably mounted for movement lengthwise of "a sole, and an end gage pivotally mounted upon said carrier and movable therewith into, position to be engaged and displaced by one of said sole-defiecting members, thereby permitting a short sole to be gaged at a point near thevsole-deflecting members without interfering with their sole-bending movement.

In testimony whereof I have signed my name to this specification.

VWILLIAM O. BAXTER.

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