US2160775A - Counter rolling machine - Google Patents

Description

May 30, 1939.

w. BAILEY COUNTER momma mcaium Filed Dec. 29, 19:57

'3 Sheets-Sheet 1 May 30, 1939. c. w BAILEY COUNTER ROLLING MACHINE Filed Dec. 29, 1937 3 SheetsajSheet 3 Patented May 30, 1939 I UNITED STATES PATENT OFFlCE 2,160,775 COUNTER ROLLING MACHINE Charles W. Bailey, Lynn, Mass, assignor to Stewart Bros., Inc. of Lynn, Lynn, Mass, a corporation of Massachusetts Application December 29, 1937, Serial No. 182,284 '7 Claims. (01. 12-65) This invention relates to machines for rolling inasmuch as the wings of the quarters or straps counter blanks to impart to themv a rounded concould not be passed through the counter rolling tour as a preliminary step in the molding process. machine. Furthermore, the solid molding cup The general objects of the invention are to imwhich cooperates with the forming rolls was likeprove machines of this class in efficiency and to ly to stretch and distort the leather parts of the 5 increase their field of use by adapting them for quarters.

the treatment not only of counter blanks, but of To secure the foregoing objects, I have proassembled quarter or quarter blanks of shoes, that vided a machine wherein the forming rolls are is to say, the lined quarter or counter portion of disposed upon the free ends ofadjacent shafts,

1 the upper with or without an enclosed counter the frame of the machine being shaped to make stiffener therein. I space for the wings of quarters passing between In one aspect the invention consists in a countthem. Moreover, the molding cup is furnished er rolling machine having overhanging or openwith freely turning rolls which eliminate the end counter forming rolls so arranged that stretching or distortion of the leather parts of quarters having wings or other extensions therethe qu AS herein Shown, the relative D on may be passed between the forming -0115 tion of the rolls may be varied at Will, and the without obstruction. The invention contemplates pp r011 m y be Yieldingly mounted 0 hat it also the provision of corrugating or crimping rolls will compensate Variations in the thickness which may be employed for an auxiliary operaof the material bein dtion of crimping the lower edge of the counter These and other features of the invention will or quarter when this is desired. be best understood and appreciated from the The invention includes within itsscope an imfollowing description of a preferred embodiment proved counter-concaving mold or cup for use in thereof, selected for purposes of illustration and cooperation with the convex counter forming roll shown in the accompanying drawings in which,

of the machine. The cup is provided ith n Fig. 1 is a view in front elevation of a counter tended concave face disposed substantially conrolling machi e Constructed according to y centric with respect to the convex roll andacts Vehtion,

to shape and iron the counter or other upper ma- F 2 iS a V ew i S d eleva on of the material as it is carried about the circumference of C e Shown in the roll. As herein shown I have reduced the 3 is a View in detail of the p, 30 frictional drag of the cup upon the material, and Fig iS a View in perspective o a Counter asthus prevent objectionable distortion or stretchsembled with the quarters v an pp a t r it ing, by providing anti-friction means at spaced has been operated on y the machine, d

areas in the contour of the concave face of the 5 is a p View Of the Counter rolling cup. Such means may conveniently take the chine. 35 shape of concave rolls arranged with their sur- Before proceeding to a detailed description of faces substantially in the contour of the cup and the machine it will be convenient first to refer spaced from each other by solid segments. The to its principal operating instrumentalities.

machine is thus adapted to handle a quarter of These comprise oppositely driven cooperating substantial thickness or 'one comprising outer rolls of which the roll 60 is convex in contour and 40 and lining plies enclosing a fibre counter stiffthe roll 58 concave in contour. The counter is ener. passed into the bite of these rolls and thus given It has been found profitable to use stiffened a preliminary curvature. It is carried about the quarters molded to shape in the manufacture of rear side of the roll 60 and drawn over the con novelty shoes, sandals and strap sandals. In the cave face of a mold or cup having a concave face 45 manufacture of sandals, for example, it has been made up by the rolls 89, 90 and 9! and the solid necessary heretofore to last the upper material segments 92, 94 and 96. The cup or mold is chiefly to form the heel pocket or quarter section yieldingly and adjustably maintained in coopof the sandal. By the use of my invention it has erative relation with respect to the convex roll 66.

now been made possible to eliminate the step of A pair of geared crimping or corrugating rolls 50 lasting strap sandals by providing preformed heel I08 and H2 provided with a guard are mounted pockets which can be attached to the sole within front of the rolls 58 and til and offset someout the necessity of using lasts, thus considerwhat toward one side in position to engage the ably reducing the cost of production. In the past edge of the counter or quarter which is to it has not been possible to accomplish this result be eventually flanged inwardly in the finished 55 article. In the usual operation of the machine the flat counter blank or quarter is fed to the corrugating rolls with its lower edge against the face of the guard plate. As the blank leaves the corrugating rolls it passes to the forming rolls and is carried around by them emerging in the condition shown in Fig. 4, that is to say, with one edge crimped and having a pronounced curvature imparted thereto.

Referring first to Figs. 1 and 5, it will be seen that the machine comprises a flat base I0 with spaced standards II and I2 which contain bearings for a horizontal driving shaft E3 upon'which is keyed a driving pulley I 4. Also keyed to the driving shaft I3 is a hand wheel I5; a loose pulley I6 is carried on the shaft I3 adjacent the driven pulley I4. Keyed on the shaft I3 near the inner end thereof is a pinion IT in constant mesh with a large external gear I8 keyed .to a horizontal main shaft I9 journalled in a bearing 20 disposed in the standard II. The main shaft I0 is also journalled in a support 24 on the base it. Carried on the shaft I9 adjacent the gear if; is a small gear 26. Also on the shaft I9, between the bearing 20 and the support 274, is a pinion 28 which is constantly in mesh with a gear 30 keyed to a countershaft 32 journalled above the main shaft I9 in bearings 34 and 35. The bearings 34 and 36 are formed in rectangular blocks each of which is mounted in a guideway for vertical movement, the guideways being formed in the supports 24 and II and comprising vertical walls 54, 55, 56 and 5? and caps 38 and 40 bolted to the upper surfaces of the vertical walls. Helical compression springs 32 and 54 rest against the upper surface of the blocks 34 and 33 and the lower ends of the bolts 25 and 40 abut against washers 50 and 52 resting on the upper ends of the springs 42 and 44. The bolts 45 and 48 are threaded into the caps 30 and 40, and it will be apparent that the counter shaft 3?. its bearings 34 and 36 may be adjusted upwardly by pressure from beneath sufficient to overcome the downward force exerted by the springs 42 and 44. The tension may be varied by manipulation of the bolts 46 and 40.

On the outer or overhanging end of the shaft 32 is keyed a concave forming roll 53 which fits over the curve of the convex forming roll 60 keyed to the end of the shaft I0. Surrounding the rear portion of the rolls 58 and 30 and integral with the support 24 is a rectangular frame 62 having .a semi-circular recess in its end wall adjacent the bite of the rolls 58 and 60 and substantially concentric with the shaft I0 as shown at B4. Threaded through the back of the frame 32 are bolts 66 and 68, the inner ends of which abut against washers I0 and 12 seated against the outer ends of helical compression springs I4 and I5 which fit around lugs '18 and 80 on the rear wall 82 of a cup or mold 84. The cup 34 comprises a rectangular frame 86 in which are journalled freely turning concave rolls 80, 00, and 3!. Integral with the frame 30 and disposed adjacent the roll 89 is .a curved shield 32 having its upper surface substantially flush with the top of the roll 80. In the spaces between the rolls 89, 00 and III are segments 94 and 9'5, which have their upper surfaces substantially fiush with the top of the rolls. The cup as a whole is designated by the reference character 84 and is disposed in the frame 62 as above explained so that the shield 92 lies directly behind the bite of the forming rolls 58 and B0. The rear wall 82 of the cup 84 is wedge-shaped so that the lowor end of the cup extends farther forward than the upper end thereof. The surface of the cup 84 lying adjacent the forming roll 60 is curved to fit the contour thereof. Cylindrical lugs 98 and 99 integral with the frame 62 are disposed to abut against the upper and lower forward ends of the cup 84 and limit the position of the cup 84.

Bolted to the standard 24 is a frame I00 which carries the bearing IIII for a counter shaft I02. The inner or right hand end of the counter shaft I02 is journalled in a removable bearing I04 secured to the standard II of the frame. Adjacent to the bearing member I04 and on the counter shaft I02 is a gear I06, secured to the counter shaft by a screw I05 in an integral hub I 3?, and in mesh with the gear 26. On the other end of the shaft I02 is an upper toothed corrugating roll I08, the latter being located opposite to the inner ends of the forming rolls 58-60. In mesh with the roll I00 and mounted for rotation about a stud H0 is a lower corrugating roll II 2. The stud H0 is rigidly mounted in a yoke H4 pivotally mounted to the frame I00 on a pivot pin II8. A set screw IIS holds the stud III] against rotation. A helical compression spring I20 bears against the bottom of the yoke H4, .and a washer I2! seats against the lower end of the spring I20 to form an abutment for a bolt I22 threaded through a lug I24 made integral with the frame I00. The frame I00 is adjustable horizontally inasmuch as the attaching bolts I20 pass through elongated slots in the frame I00 and thus the Width of the corrugated margin of the counter may be adjustably controlled.

In front of the frame I00 is a safety guard and gauge unit comprising converging plates I32 and I33, located just in front of the bite of the rolls I08 and H2, and a vertical gauge plate I34. The space between the adjacent ends of the plates I32 and I33 is small enough to prevent the entrance of a human finger. The guard is bolted to the frame I 00 by the bolts I30 which work in elongated horizontal slots in the guard I28. By loosening the bolts I30 and shifting the unit the gauge may be adjusted horizontally and the transverse position of the counter with respect to the forming rolls thus adjustably controlled. It will be noted that the corrugating rolls and the gauge plate I34 are located substantially opposite to the inner ends of the forming rolls and that the gauge is engaged by that edge of the counter or assembly counter blank which is to be lowermost when incorporated in' the finished shoe.

The machine may be operated by hand by utilizing the hand wheel I5 or may be driven by a belt encircling the driving pulley I4. In either case, when power is applied the shaft I3 rotates and causes rotation of the lower convex forming roll 30 through the pinion I? and the gear I8. Similarly the upper forming roll 58 is caused to rotate by the shaft I3 through the pinion II, the gear I8, the pinion 2B, the gear 30 and the shaft 32. At the same time the gear 26 on the main shaft I3 causes the upper corrugating roll I08 to rotate, the power being transmitted through the gear I03 and the counter shaft I02. A counter is fed between the corrugating rolls I08 and H2 with its lower edge against the gauge plate I34.

Subsequently the counter is automatically fed between the forming rolls 58 and 60 which impart to it a rounded contour. After the counter has passed between the bite of the rolls 58 and 60 it is pressed against the rear portion of the roll 60 by the cup 84, the friction rolls 89, 90, and 9| serving to ease the path of the counter between the roll 60 and the cup 84 while the shield 92 deflects the counter between the cup 84 and the roll 60. When it is desired to roll counters enclosed in quarters a similar operation is performed by the machine, with the exception that the effective distance between the rolls 58 and 60 is widened by reducing the pressure exerted by the springs 42 and 44 (by loosening the bolts 46 and 48). Similarly the bolts 66 and 88 are loosened to reduce the pressure exerted by the springs 14 and 16 against the back of the cup 84. Furthermore, the bolt I22 is loosened to reduce the pressure exerted by the spring 520 against the yoke H4 which actuates the lower corrugating roll H2. Having thus increased the clearances between the operating elements of the machine, it is possible to pass through the machine a counter enclosed between the upper and lining of the quarter section of a shoe. The result is shown in Fig. 4, where it will be seen that the corrugating rolls I08 and H2 act upon the lower margin of the assembled quarters and counter and that a pronounced curve has been imparted to the entire assembly. The curve shown in Fig. 4 is a trifle exaggerated, a fact necessitated by space limitations in the drawings. The assembled shoe parts may be used in the construction of shoes after the unit has been curved and crimped or corrugated as shown in Fig. 4' or it may be molded, prior to being assembled with the other elements in the shoe, so that the corrugated portion of the margin is bent inwardly to form a flange destined to rest upon the bottom of the last. In machines heretofore used it would be impossible to roll an assembly such as that shown in Fig. 4 for the reason that the extending wings I36 would become damaged between the frame of the machine and the forming rolls or caught in the bearings for the forming rolls shafts, since it has been the practice to mount the forming rolls between bearings rather than on free ends of the shafts.

It will now be apparent that I have provided a machine which produces a result long sought after by those skilled in the art, Such persons will readily appreciate the fact that numerous variations from the structure disclosed above will be possible and practical. However, the above description merely relates to one preferred embodiment of the essential concept underlying my invention, and it should be understood that the scope and spirit of the invention is limited only by the extent of the appended claims.

I claim:

1. In a counter rolling machine the combination of corrugating rolls, forming rolls, and a cup disposed behind said forming rolls and including a shield, a plurality of freely turning rolls, and a plurality of stationary segments.

2. A cup for a counter rolling machine, comprising a bodily movable unit including a backing frame, a plurality of freely turning rolls journaled in said frame in an arcuate pattern, a plurality of segments disposed in said cup and having their surfaces substantially flush with the surfaces of the rolls, a shield on one end of said frame adjacent one of said rolls .and yielding means for pressing the unit into operative position.

3. A counter rolling machine, which comprises a main shaft, and two adjacently disposed countershafts, all three shafts being supported by bearings spaced from their ends, a convex roll on the end of said main shaft and a concave roll carried on the end of the one countershaft anddisposed adjacent said convex roll; an upper corrugating roll on the end of the second countershaft, a stud disposed below said secondcountershaft, a lower corrugating roll disposed for rotation about said stud, and an adjustably mounted cup disposed behind said convex and concave rolls and comprising a plurality of freely rotating rollers and solid segments arranged in alternating series.

4. A machine for rollingcounters and the like, which comprises a pair of corrugating rolls, an adjustable work guide and safety guard disposed before said corrugating rolls, convex and concave forming rolls disposed behind said corrugating rolls, and a curved cup cooperating with said forming rolls, means for regulating the distance between said corrugating rolls, means for varying the distance between said forming rolls, and means for controlling the distance between said forming rolls and said cup.

5. A counter rolling machine which comprises a base, a frame in said base, a plurality of hearing standards integral with said base, a driving shaft journaled in two of said bearing standards, a pinion on said driving shaft, a main shaft supported by two of said bearing shafts and having one endfree, a gear on said main shaft in mesh with said pinion, a countershaft supported for limited upward movement by two of said bearing standards and having one end free, a spur gear on said main shaft, a gear on said countershaft in mesh with said spur gear, a convex roll in the free end of said main'shaft, a concave roll on the free end of said countershaft, a pair of corrugating rolls driven by gearing from said main shaft, and a cup disposed in said frame adjacent said convex and concave rolls and having a plurality of freely turning rolls and stationary segments adjacent said rolls.

6. In a machine for forming shoe counter blanks having projecting wings, cooperating forming rolls supported in open-ended relation, a'spring pressed forming cup having spaced antifriction rolls therein associated with the forming rolls and arranged to yield bodily to accommodate variation in thickness of the blanks, and a gauge located in position to line the lower edge of the blanks with the inner ends of the forming rolls while the wings of the blanks are free to pass beyond the outer ends of the rolls.

'7. In a machine for forming shoe counter blanks and including driven convex and concave forming rolls, a forming unit comprising a frame having alternate anti-friction rolls and curved spacing segments therein, and means for supporting the unit for bodily yielding retracting movement in the machine with respect to the convex forming roll.

CHARLES W. BAILEY.

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