US1270319A - Machine for cutting soles. - Google Patents

Description

E. L. PATTEN.

MACHINE FOR CU'TTINGSOLES.

APPLICATION FILED FEB. 19. 1917.

Patented June 25, 1918.

4 SHEETS-SHEET I.

INVENTOR. Ermesfflffim;

RNEY.

E. L. PATTEN.

MACHINE FOR CUTTING SOLES.

APPLICATION FILED FEB. 19. 1917.

Patented June 25, mm

4 SHEETS-SHEET 2.

INVENTOR. TWES f .Z QJ L;

E. L. PATTEN.

MACHINE FOR CUTTING SOLES.

APPLICATION FILED FEB. 19, 1917.

Patented June 25, 1918.

4 SHEETS-SHEET 4.

IN VEN T OR. Erma fl .f%m; BY

l l It ERNEST L. PATTEN, 01F MADDEN, MACHUSETTS.

' MACHINE FUR CUTTING SOLES.

Specification of Letters Patent. I

Patented June as, rare.

a lication filed rem-nar 1a, 1917. Serial no. 149,412.

To all whom it may concern:

Be it known that T, ERNns'r 1L. PATTEN, a resident of the city of Maiden, in. the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Machines for Cutting Soles, of which the following is a specification.

My invention relates to that type of form cutting machines in which a knife is caused to traverse a sheet of rubber or the like for cutting soles therefrom, and .in which the knife-carrying instrumentalities are moved in an oblong path, while the knife itself is controlled by a leader, as set forth in my U. S. Patent 1,144,429, issued June 29, 1915.

.My present invention has for its objects, first, to give to the knife-carrying "instrumentalities a bodily motion of translation as a whole, in addition .to a similar motion "of the leader; second, to provide an im' proved means for adjusting the travel of the instrumentalities and leader; third, to

devise improved means whereby the work supporting table maybe kept entirely stationary, while the working parts are raised did lid

for the insertion of the sheets of rubber or leather; and to efiect other improvements in details of construction hereinafter set forth..-

In the drawings forming part. of this specification, Figure 1 isan elevation of a machine embodying my improvements,

parts being broken away and in section.

Fig. 2 is an end elevation of the same. Fig. 3 is an elevation on a larger scale of the knife carrying means. Fig. 4 is an elevation of the same from a difi'erent point of view, parts being in section. Fig. 5 is a perspective view of a group of allied parts. Fig. 6 is a perspective view of another group of allied parts. Fig, '7 is a plan view of the leader locking device. Fig. 8 is a cross section of the same.

The reference. numeral 1 designates the machine table upon which the sheet material to be out is laid; 2 is the knife by which the material is cut; and 3 is the form about whose periphery the knife is made to travel, the form being rigidly supported above the table by a stem 4 dependmgr from a suitable frame-member 5.

he knife 2 is held by a carrier-arm 6 pivotally supportedat the end opposite the knife on a vertical bolt 7 the carrier-arm being resiliently pressed against the stop 9 by a helical spring 10 whose torsional effect thereon is adjusted-by the knurled annulus 11 and set screw 12, as illustrated in Figs. 3 and 4. An anti-friction roll 13 carried by the arm 6 and bearing against the under surface of the plate 14, takes the upward strain given to the knife during its cutting action, and permits it to swing freely about the curves of the form 3.

The plate 14 is rigid with a spindle 15 turning in- bearings 17, 19, the latter being connected with a head slidably supported on ways 21. The upper part of the head 20 is provided with spaced antifriction rolls 22 movable in ways 23; the ways 21, 23 being united by posts 24. The ways 23 are formed with a faced plate 25"united by bolts 26 with an upper plate 27, which plates are slidable along the upper and under surfaces of the head 29, and the bolts are given anti-friction rolls '30 fitting the slot 3-1 in the head 29. An anti-friction roll 32 carried by the upper way membr 23 serves to withstand the lateral pressure given by the knife 2. Anti-friction rolls 33, 34 and 35, 36 bearing against the vertical flange 37 of the leader 39 further guide the knife in its travel.

For propelling the knife frame, com: posed of above recited parts, with its guide rolls traveling in the slot 31, sprocket chain 40 passing about sprocket wheels 41, 42 is connected to the upper plate 27 by a link 43. The sprocket wheel 42 is rotated by bevel gears 44, 45.

The head 29, with its bonnet 46, is slidably supported by the frame 7 9 to be moved to the two extremes indicated by dotted lines in Fig. 1, and the means for such actuation comprises a shaft 47 rotated by spiral gears 49, 50 (Fig.2), a face plate 51 (Fig. 5), a crank pin 52 whose head 53 is slidable in the dovetail roove 54 in the face plate, a block 55 on t e crank pin vertically slidable in the slot 56 of the pitman 57.

For adjusting the throw of the crank in 52, the face plate 51 has a rack 59 'astened thereto, with which meshes a pinion 60 mounted on a sleeve turning on the crank pin and fastened in the hub of the knurled wheel 61. The outer end of'the crank pin passes through a friction plate 62 and has a cam 63 pivoted thereon by a pin 64. By forcibly turning the wheel 61, the pinion 60 causes the crank pin to travel along the groove 54 until it reaches the desired throw, and then the cam 63 is turned down to press the friction plate 62 against the flanged rim of the wheel 61 hard enough to lock the latter against further movement.

To maintain the motion of the bevel gear 45, it is held against its associated gear 44 by havin its shaft 65 supported in bearings 66, 6 carried by the head 29, the shaft being suitably held against longitudinal displacement in said bearings. In alinement with the shaft 65 is a shaft 69 connected therewith by flexible couplings 70 (Fig. 1) and squared or otherwise made to be slid able in but to turn with a tubular shaft 71 which receives its power through a sprocket chain 72. Consequently, a continu 1, 4 and 7) is slidably supported by a-carrier 76 slidable in Ways 77 held by the depending frame members 79 (Fig. 2). This carrier is moved by means of a pitman 80, and adjustable crank pin 81 practically identical with those above described for the head 29; the shaft 82 carrying the face plate 83 which holds the crank pin 81, being provided with a gear 84 meshin with the gear 50.

For enabling t e table 1 to be absolutely stationary and yet to permit the sheet material M to be readily introduced thereon beneath the form 3 and knife 2, I have devised means for suitably raising and lowering the entire operating mechanism and the frame members 85, 79 and 5 carrying the mechanism, without interfering with the opera tions. To this end, the table supporting means 86 is formed with vertical ways 87 (Figs. 1 and 2) in which the frame member is slidable. Springs 89 resiliently support the frame members and operating mechanism in a normally elevated position to permit the easy introduction of the material M upon the table, and suitably actuated depressing. means acting through a link 90 serves to depress the mechanism. at the proper time and to the desired point for pressing the form 3 upon the material to be operated upon.

Inasmuch as the sprocket chain 72 connects with a suitable sprocket wheel 100 on a shaft 101 (Fig. 2) carried by the fixed framework 86, while the sprocket wheel engaged by the upper part of said chain is carried on the vertically movable frame 85, it is necessary to provide a means for periodically taking up the slack in the chain during the frames descent. For this purpose, an idler 102 is swung against the inner face of the sprocket chain by a bell-crank lever 103 pivotally supported at 104 and having its arm 105 met by the end of a stud 106 projecting from the frame member, the pivot 104 being supported by the frame 86. Consequently, as the frame members 85, 79, 5 and the mechanism supported thereby, begin to descend, the stud 106 swings the idler 102 outward, carrying with it the chain 72, and so takes up the slack which would otherwise occur therein.

Since there must be a frequent change in leaders 39 in order to enable the machine to out different sizes of shoe forms, it is essential that the locking means by which each leader is held in place shall be both sure in its grip, easy to manipulate, and in no way an obstruction'to the sheet rubber or other material being cut up. To this end, each side-member 76 of the leader carrier has an overhang 107 beneath which the corresponding edge of the leader is to fit, and a lug 109 upon which the said edge is supported, the edge being given a notch 110 so that the leader can be pushed up with the notch passing the lug and then be moved directly rear ward until the latter comes beneath the unbroken edge and supports the same.

The leader is fastened in place by the locking block 111 slidable in the slot 112 in the carrier 76, and actuated by a lever 113 pivoted at 114 and en aging a pin 115 rising from the block. The end of the block 111 being brought in front of the shoulder 116 of the leader, the latter is locked against withdrawal; and the block and lever are held in this position by a spring latch 117 adapted to enga e the corner of the carrier, as shown in Fig. I prefer to provide the end of the block 111 with lips 119,120 adapted to come above and below the surfaces of the carrier below the slot and thereby to support the end of the block thereat, the other end of the block coming between the leaves of the ways 77. The lower lip 120 is constructed to come beneath the edge of the shoulder 116 and so to support the leader thereat.

The employment of the anti-friction rolls 13 and 32, is very important, the roll 13 taking the pressure of the knife while in operation and permitting the free swing of the arm 6 as the knife follows the sinuosities of the leader flange 37;. and the roll 32 taking the strain of the lateral pressure against the entire knife carrying mechanism.

By having the leader frame 76 and the head 29 both made movable synchronously with thetravel of the knife frame as propelled by the chain 10, and such movements made adjustable both in extent and direction, the same machine is enabled to be used for cutting all sizes of soles. In actual practice, l find it desirable to adjust the throw of the leader carrier with every change in size of sole to be cut; but the adjustment of the reciprocation of the head 29 needs to be varied but three or four times. The crank pin 52 is set in alinement with the shaft 17, and hence with a zero-throw, when Womens sizes of soles are to be cut; for childrens and misses soles, the crank pin is set to give a minus throw,that is, to move the head toward the left (as viewed in Fig. 1) when the knife-carrieris' movingv toward the right, and thereb to diminish the total movement of the kni e.

For mens sizes of soles, the crank pin is adjusted to add its throw to that of the chain, instead of decreasing it as in childrens sizes.

In each case, the leader-carrier must have its throw correspondingly varied, and in addition, with each change in the sizes of childrens soles, with each change in sizes of ladies soles, and with each change is sizes of mens soles, the leader carrier must be adjusted.

My improvement whereby the entire operating machinery and its supporting frame are made to rise for permitting the sheet rubber to be introduced upon the work table beneath the form 3, is also an important one, since otherwise to arrange for the ascent and descent of the form will require a complication of parts which not only adds materially to the expense of the machine, but to the dimensions of it as well.

My leader locking means above referred to is of considerable importance, not alone because of its ease and certainty of operation, but because it does. not unduly rise above the surface of the leader and intercarrying direction of the major axis of the path, for lengthening and shortening the path of the knife. 1

2. A sole cutting machine comprising a work table, a knife, means for moving the knife in an oblong path, a leader controlling the path of the knife, and adjustable means for periodically shiftin the knife moving means in the direction 0 its major axis.

3. A sole cutting machine comprising a work table, a knife, means for moving the knife in an oblong path, a leader controlling the path of the knife, adjustable means for periodically shifting the knife moving means, and adjustable means for shifting the leader periodically.

4. A sole-cutting machine comprising a work table, a knife, means for moving the knife in an oblong path, and means for pcriodically shifting the knife moving means bodily, both said means moving in synchronism, and the second named means being capable of adjustment both in degree of movement and in direction.

5.A sole cutting machine comprising a work table, a knife, means for moving the knife in an oblong path and for controlling the course of the knife, and means for synchronously shifting said means comprising a shaft and face plate, the face plate having a dovetail groove diametrically therein, a dovetail block slidable in said groove, a crank pin projecting from said blockparallel with said shaft, a pinion turning on said pin, a rack carried by the face plate in mesh with said pinion, a pitman connected with said pin and said means, a hand wheel on said pin adapted for forcibly rotating said pinion, a friction plate resting against a face of said wheel, and a cam carried by the outer extremity of said pin and disposed for pressing said friction plate against the face of said wheel and thereby locking the pinion and hence the crank pin at any desired point of adjustment.

6. A sole cutting machine comprising a fixed work table provided with vertical ways at one end, a frame slidable in said ways, a knife, means for moving the knife in an oblong path, a leader controllin said path, and a form for guiding the knif ing the Work upon the table, and mechanism for actuating the knife moving means, said. knife moving means, leader, form and mechanism being supported by and rising and falling with said frame.

7. A sole cutting machine comprising a fixed work table having vertical ways, a frame slidable in said Ways, a knife, means for moving the knife in an oblong path, said means including a shaft and sprocket wheel, said knife and knife moving means, shaft and sprocket Wheel being supported by and. rising and falling with said frame, a power driven sprocket" Wheel having stationary bearings below said frame, a sprocket chain joining said sprocket wheels, an idler resting against said chain, a bell-crank lever carrying said idler and having a stationary pivot, and a projection from said frame adapted to engage said bell-crank lever and to cause its idler to flex said chain and thereby take up the slack therein as said frame descends, said frame having means for forcibly reciprocating it.

8. A sole cutting machine comprising a knife and knife operating mechanism, a

e and hold I leader controlling the knife, and a carrier supporting the leader, the leader having a notch in each of two opposing side edges, and the carrier having at each of said sides 5 of the carrier an overhung flange and an underhung lug, whereby the leader can be pressed up against the overhung flanges and thence backward to present its unbroken edges above said lugs.

In testimony that I claim the foregoing 10 invention, I have hereunto set my hand this 16th day of February, 1917.

ERNEST L. PATTEN.

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