US2243163A - Edge setting and inking machine - Google Patents

Description

May 27, 1941. G. w. LIBERTY ETAL EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1939 5 Sheets-Sheet 1 1941- e. w. LlB ERTY ETAL 2,243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1939 5 Sheets-Sheet 2 I L4: A Imviwijasz y 27, 19 1. G. w. LIBERTY ET AL 2 243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1959 5 Sheets-Sheet 3 y 1941- G. w. LIBERTY ETAL 52,243,163

EDGE SETTING AND INKING MAGI'IINE Filed NOV. 9, 1939 '5 Sheets-Sheet 4 y 1941- G. w. LIBERTY E1- 2,243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1 939 5 Sheets-Sheet 5 I N\/EN+EI RS:

Patented May 27, 1941 EDGE SETTING AND INKING MACHINE George W. Liberty and Gustaf Bratt, Lynn, Mass, assignors to National Development Company, Lynn, Mass, a corporation of Massachusetts Application November 9, 1939, Serial No. 303,630

4 Claims.

This invention relates to machines for finishing the edge of shoe treads, such as the edge of a toplift of a wood heel.

In finishing the edge of shoe treads, the edge is inked and waxed and then set to form a finishing bead along the tread portion. Machines have been provided for setting the edge of the tread portion of a shoe, but prior to the present invention, the inking operation has been performed by hand. Thus, the edge of each tread portion has been inked and waxed by a hand operation and thereafter has been set by machine.

It is an object of the present invention to provide a suitable machine for performing the inking and waxing operation upon the edge of the tread portion of a shoe.

The invention will be more clearly understood from the following description in conjunction with the accompanying drawings, in which,

Fig. 1 is a side elevational view of a machine embodying the invention;

Fig. 2 is a plan view of the same looking in the direction of the arrow in Fig. 1;

Fig. 3 is a view similar to Fig. 1, showing the waxing and inking mechanism detached;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2;

Fig. 5 is a plan view looking in the direction of the arrow in Fig. 3;

Fig. 6 is aperspective view of a wood heel showing the edge ofthe toplift after ithas been waxed or inked by the machine ofthe invention;

Fig. 7 is a perspective view of a wood heel showing the edge of the toplift set by the machine of the invention;

Fig. 8 is a side elevational view of a portion ofthe machine; and

Fig. 9 is a view similar to Fig. 3 showing the parts in difierent positions.

The machine illustrated in the accompanying drawings embodies the essential elements-of that described in the patent to Merton W. Howard, No; 1,829,800, dated November 3, 1931, which is arranged to roll in a joint a between the heel A and the toplift B (Fig. '1), and to form a bead 0 along the curved part of the toplift at its outer edge. In addition, the machine embodies other instrumentalities which function in timed relation to the edge setting mechanism for first inking the edge of the tread portion.

As illustrated in the accompanying drawings, particularly Figs. 1, 2, 3 and 4, the machine of the invention comprises a frame which is designed to provide the necessarybear-in'gs, sup

ports and guides for the various parts. A main driving shaft 21 is journalled in bearings in the frame 20 and is driven from a suitable source of power (not shown). Fast upon the shaft 21 is a pinion 30 which meshes'with a gear 3| on a cam shaft 32 journalled in suitable bearings in the frame 2!]. J ournalled respectively in bearings 33 and 34 in the frame 20 are the aligned sections 35 and 36 of a two-partjack shaft, the ends of said sections being spaced from one another and being connected by a yoke 31. The yoke 31 is formed at one end with a hub 38 keyed or. otherwise fixed to the end of the shaft section 35, and its opposite end with a split hub 39 abutting the bearing 34 and secured to the end of the shaft section 36 by a clamp bolt 4|! and spline- (not shown), thereby permitting longitudinal adjustment of the shaft section 36 in the hub 39.

Secured to one end of the main driving shaft 21 is a crank arm 42 having ways to receive a slide 43 adjustable therein by means of an adjusting screw 44. Pivoted to the slide 43 is one end of a pitman 45 the opposite end of which is pivoted to a block 46 slidable in a slot 41 in a gear segment 48 pivoted at.49 to the frame. 20 and:

meshing with a pinion 50 secured to the outerv end of the section 35 of the jack shaft. The. block 46 is normally held in the upper end of" the slot 41 to afford the driving connection be tween the pitman 45 and segment 48, by means of a dog 5| pivoted at 52 to said segment and normally held in operative position by a spring 53. The dog 5! is formed with a foot 4 which depends into the path of movement of a pin 55 projecting from the face of the gear 3| which thereby constitutes a controller for said dog.

It will be seen that with the block 46 locked in its operative position in the slot 41, the jack shaft and work holder will be oscillated from the main driving shaft 21 through the crank 42, pitman 45,

segment 48, and pinion 50, the amplitude of oscillation being determined, in accordance with the arcuate or circumferential length of the edge of the particular style of toplifts to be operated upon, by adjustment of the slide 43. After one revolution of the gear 3| which may be designed to correspond to any desired number of oscillations of the jack,.the foot 4 is engaged by thev pin 55, causing the dog 5| to be disengaged from the block 46 leaving the latter free to reciprocate in the slot 41. The jack, therefore, will remain idle during one complete rotation of the shaft 21-, this being the-unloading and loadingpcriodiin the cycle of operations of the machine which period one completed piece of work is removed from the machine and a new piece inserted. By the time shaft 21 has completed one revolution, the pin 55 has moved out of engagement with the foot 4, permitting the spring 53 to restore the dog to its normal position, thereby again locking the slide 46 to the segment 48, and the oscillation of the jack is resumed or continued.

The means for positioning and clamping the work in the jack comprises a toplift rest or plate 56 for engaging the outer face of the toplift B, a breast gauge 1 for engaging the breast of the heel A, a heel seat support 58-carrying a detachable positioning plate 59 for engaging the heel seat portion of the heel A.

The breast gauge 1 has a shank portion slidably received in the yoke 31 and suitably secured for adjustment therein, the means for adjusting not being shown. The breast gauge 1 positions the heel horizontally and its adjustment adapts the machine to heels of varying shapes in order that the axis of the curvature of the: toplift edge may substantially coincide with the axis of oscillation of the jack, that is to say, the common axis of the shaft sections 35 and 36. The vertical positioning of the heel in order to bring said axis substantially into coincidence in the vertical plane is effected by the sense of touch of the operator with the assistance of the heel seat centering plate 59 which is detachably secured to the heel seat support 58. The machine is provided with mechanism, not shown, for drawing the opposed clamping devices apart to permit the insertion of the heel.

A lever 15 (Figs. 1, 2 and is pivotally mounted at 16 to the frame 20. The lever is provided with a pair of spaced lateral projections 11 between which a rod 18 extends. An arm 19 is pivotally mounted upon the rod 18 and carries a holder 80 in which the edge-setting iron 8 is mounted. The iron 8 may be heated electrically by means in dicated at 14. An adjusting screw 8| is threaded in the arm 19 and is adapted to engage the surface of the lever 15. One end of a coil spring 65 is secured to a hook 66 fixed in the arm 19 and the other end of the spring 55 is secured to one arm of a bell crank 90 which is pivotally mounted at SI to the frame 20. The other end of the bell crank 90 carries a follower roll 82 engaging a cam 93 fixed upon the cam shaft 32. The spring 65 serves to maintain the screw 8| (Fig. 2) in engagement with the arm 15 and is adapted to cause the iron 8 to exert a heavy pressure upon the work. A short lever 83 (Fig. 8) is pivotally mounted intermediate its ends upon a stud 84 fixed in the lever 15. A stud 85 projecting laterally from near one end of the lever 83 carries a follower roll 86 engaging a cam 81 fixed upon the cam shaft 32. A hook 88 is fixed to the lever 83 near its other end and is adapted to receive one end of a coil spring 89, the other end of which is secured to the frame 20. The spring 89 maintains the opposite end of the lever 83 in engagement with the end of an adjusting screw 94 threaded in a lug projecting from the lever 15 and also causes the iron 8 to exert a light pressure upon the work.

A reservoir I00 (Figs. 3 and 9) adapted to receive colored wax or ink is mounted upon a bracket IOI fixed to the frame 210. If a colored wax is employed which is solid at normal temperatures, it may be liquefied by electrically heating means I0. An ink supply roll II is fixed upon a shaft I02 mounted for rotation in suitable bearings in the wall of the reservoir I00. Heating means I3 is provided for electrically heating the roll II. A pulley I03 is fixed upon the shaft I02 and is connected by a belt I04 with a pulley fixed upon the cam shaft 32. The roll II is positioned in a plane spaced from the plane in which the tool 8 is moved toward and away from the work.

A shaft II 6 is mounted for rotation in suitable bearings in the frame 20. An arm I I0 is fixed to the shaft H6 near one end thereof and carries a roll I I I adapted to engage a cam I I 2 fixed upon the shaft 32. The roll III is maintained in engagement with the cam H2 by a spring H1, one end of which engages a hook fixed in the arm I I0 and the other end of which is secured to the frame 20. A sleeve I I3 is slidably keyed upon the shaft H6 near its other end and is provided with an annular groove H4. An arm H9 is pivotally mounted upon the frame 20 and is provided with a fork H8 which straddles the sleeve H3. Wear resisting shoes H5 are pivotally mounted on the opposite arms of the fork H8 and engage the groove H4. A stud I2I is fixed in a lug projecting laterally from the arm H9 and carries a roll I22 positioned in the groove on the periphery of a cam I23 fixed upon the shaft 32.

The sleeve H3 is provided near one end with a radial projection I25, one face of which is provided with a recess I26. One end of an arm I21 projects into the recess I26 and is pivotally mounted upon a stud I28. Leaf springs I30 and I3I are fixed upon opposite edges of the arm I21 and project into the recess I26 between the ends of adjusting screws I32 and I33, which are threaded in the projection I25. An ink-transfer roll I4 is pivotally mounted upon the arm I21 near its other end and is adapted to be moved by the mechanism described between a position engaging the roll II and a position engaging the edge of the toplift B. Means generally indicated at I5 is provided for heating the roll I4.

During the unloading and loading period in the cycle of operations of the machine, as previously described, the oscillation of the jack is stopped so that one completed piece of work may be removed and a new piece inserted. At this time the iron 8 is retracted from the work to the position shown in Fig. 1 and the inktransfer roll I4 is in the dotted line position shown in Fig. 3 with its periphery engaging the periphery of the ink supply roll II. Near the end of the loading period, the cam I23 (Fig. 5) causes the arm H9 to swing and slide the sleeve H3 along the shaft H6. At the same time, the cam H2 (Fig. 3) swings the arm H0 to rotate the sleeve II 3 and swing the arm I21. As a result of the combined action of the cam I23 and the cam H2, the roll I4 is moved in a diagonal path from its dotted line position to its full line position shown in Figs. 3 and 5. The jack then starts its oscillation and, as it moves from one end of its amplitude of movement to its other end, ink is applied by the roll I4 to the edge of the toplift B. As the jack completes its other half of one oscillation, the cams I23 and H2 cooperate to move the roll I4 from its full line position shown in Fig. 3 to its dotted line position. At the same time, the cam 81 permits the spring 65 to swing the arm 15 so as to move the iron 8 from theposition shown in Fig. 1 to a position engaging the edge of the top lift B. The jack then completes its cycle of oscillations and the iron 8 sets the edge of the toplift B. The oscillation of the jack then stops to permit unloading of the completed piece of work and the insertion of a new piece. The iron 8 then is moved from its position engaging the edge of the toplift to its inoperative position as shown in Fig. 1.

The ink used in the preferred practice of the invention is a colored wax compound which is solid at normal temperature. It is liquefied by heat and applied while in its heated liquid state and dries and hardens almost instantly after application to the edge of the tread. Throughout this specification and appended claims the term ink is intended to mean either a wax or color or both.

I claim:

1. In a machine for finishing the edge of a portion of a shoe tread, such as the edge of a toplift attached to a heel, means for holding said tread, an edge setting iron, means for applying ink to said edge, means for moving said applying means from an operative position engaging said tread to an inoperative positioni while moving said iron from an inoperative position to an operative position engaging said tread, and means operative when said iron and said applying means are in their operative positions for causing relative movement between the same and said holding means whereby to ink and set the edge portion of said tread.

2. In a machine for finishing the edge of a portion of a shoe tread, such as the edge of a toplift attached to a heel, means for holding said tread, an edge setting iron, means for applying ink to said edge, means for moving said applying means from an operative position engaging said tread to an inoperative position while moving said iron from an inoperative position to an operative position engaging said tread,

and means for oscillating said holding means.

3. In a machine for finishing the edge of a portion of a shoe tread, such as the edge of a toplift attached to a heel, means for holding said tread, an edge setting iron, an ink reservoir, an ink supply roll depending into said reservoir, means for rotating said roll, a transfer r011, means for moving said transfer roll into and out of positions engaging said ink supply roll and said tread, means for moving said iron between an operative position engaging said tread and an inoperative position, and means for oscillating said holding means.

4. In a machine for finishing the edge of a portion of a shoe tread, such as the edge of a toplift attached to a heel, means for holding said tread in a fixed location, means for applying ink to said edge, means for moving said applying means from a position in engagement with said tread in said fixed location to a position out of engagement with said tread, an edge setting iron, means for moving said iron from a position in engagement with said tread in said fixed location to a position out of engagement with said tread, means for relatively moving,

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