US2567234A - Machine for coating insole blanks - Google Patents

Description

Sept. 11, 1951 H. PHILLIPS MACHINE FOR COATING INSOLE BLANKS Filed Dec. 15," 1948 6 Sheets-Sheet 1 Invenior Harry Phillips 6 Sheets-Sheet 2 Sept. 11, 1951, H. PHILLIPS MACHINE FOR COATING INSOLE BLANKS Filed Dec. 15, 1948 Sept. 11, 1951 H. PHILLIPS 2,567,234

MACHINE FOR COATING INSOLE BLANKS Filed Dec. 15, 1948 6 Sheets-Sheet 5 Invenior Harry PhLZZZPS .ZZQL, I

Sept. 11, 1951 H. PHILLIPS 2,567,234

MACHINE FOR COATING INSOLE BLANKS Filed Dec. 15, 1948 6 Sheets-Sheet 5 122219722 02 Harry Phillips B hi Aiorney Sept. 11, 1951 H. PHILLIPS 2,567,234

MACHINE FOR COATING INSOLE BLANKS Filed Dec. 15, 1948 6 Sheets-Sheet 6 Invanior Harry Phillips Patented Sept. 11, 1951 MACHINE FOR COATING INSOLE BLANKS Harry Phillips, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application December 15, 1948, Serial No. 65,325

This invention relates to machines for coating pieces of relatively thin material and is herein illustrated as embodied in a machine for applying acoating of adhesive, hereinafter termed cement, to the whole of one face of an insole blank.

In the making of many insoles it is desired to adhesively secure a reinforcing canvas to an insole blank, which is sometimes made of wood fibre and sometimes of leather, in order to give it greater strength. For reasons of economy these insole blanks are sometimes quite thin and flexible and it is impossible to apply a satisfactory coating of cement to them by utilizing the well-known sole-cementer in which a presser roll is employed to hold the work in contact with the applying roll because of the danger of the transfer of cement to the presser roll from which it will be later transferred to the clean surface of pieces of work. The general problem of avoiding this difficulty while coating thin material was solved in a machine which is illustrated in Letters Patent of the United States No. 2,318,600, granted May 11, 1943, upon the application of P. H. Dixon, in which the ma chine has a pair of coacting feed rolls in advance of the applying roll and arranged to present the end of the incoming work to the upgoing side of the app-lying roll near the top thereof. The resistance of the work to bending is effective to hold it in firm contact with the applying roll. The angular arrangement of the plane of the axes of these feed rolls may be varied in accordance with the particular work to be treated and furthermore the grip on the work and the minimum spacing of the feed rolls may be adjusted.

With some types of material a satisfactory coating of cement can be applied by means of a roll traveling in the same direction as the work; in other cases, where a heavier coating is desired, it is found preferable to reverse the rotation of the applying roll so that it is rubbed across the undersurface of the work as it is moved positively forward by the feed rolls. The quantity of cement carried up to the insole by the applying roll is usually determined by a stripper associated with the upgoing side of the roll. With solventcut rubber cement, such a stripper may comprise a plate or a bar, but when latex cements are used it is preferable or necessary to employ a driven roll for stripping or controlling the quantity of cement carried to the insole by the applying roll. It will be readily understood that when the direction of rotation of the applying roll is reversed the position of the stripper must be also changed from one side to the other of the applying roll.

Accordingly, one object of the invention is to 11 Claims. (Cl. 9151) provide an improved machine of the above type in which provision is made for easier adjustment of the feed rolls.

To that end, and in accordance with a feature of the invention, the two feed rolls are mounted in a tiltable carrier the position of which may be readily adjusted without interfering with the drive of the rolls. Combined with this arrangement is a provision for adjusting the spacing of the rolls and the tension of the spring which urges them together.

Still another feature of the invention resides in an improved arrangement for supporting the stripper which, while avoiding extreme niceties of machine work, permits exact positioning thereof at either side of an applying roll. To that end, the illustrated arrangement includes a stripper carried by arms which are clamped to a pivot rod. After the adjacent faces of the stripper and applying roll have been set parallel, clamping of the arms to the pivot rod is eifected by draw bolts, thus maintaining their parallelism throughout adjustment of the stripper by swinging its support on the pivot rod.

Other features of the invention relate to the support of the cage for a bottle which is used for a barometric feed to an open tray carrying the cement to the underside of the applying roll. A novel arrangement for supporting the cage is such that it may be tilted to an inoperative position with the supply bottle above the edges of the tray, to facilitate removal of the latter.

These and other features of the invention will be best understood from a consideration of the following specification and accompanying drawings, in which:

Fig. l is a plan view of a machine embodying the present invention, parts being removed and broken away to show the applying roll arranged to be driven in a direction opposite to the direction of movement of the work;

Fig. 2 is a similar View, with the drive of the applying roll reversed;

Fig. 3 is a side elevation of the delivery end of the machine, the rolls being arranged as in Fig. 2;

Fig. 4 is a fragmentary view of the feed roll carrier;

Fig. 5 is a front elevation;

Fig. 6 is a detail in plan of the mounting for the applying roll and its stripper roll, with parts in section on the line VIVI of Fig. 5;

Fig. 7 is a detail view showing a pivot stud for the applying roll, taken partly in section on the line VII-VII of Fig. 5;

Fig. 8 is a vertical section through the operating rolls taken on the line VIII-VIII of Fig. 2;

Fig. 9 is a fragmentary vertical section on the line IXIX of Fig. 2; and

Fig. 10 is a similar section on the line X-X of Fig. l.

The machine comprises a frame I (Fig. 3) supported upon legs I2 and provided with a back flange I4 (Figs. 1 and 8) which interconnects an end flange I6 (Fig. 3) and a gear box I8. This box is provided with a removable cover 20 and has a forward extension 22 for a purpose which will later appear.

The operating parts of the machine include an applying roll 24 (Fig. 8), a stripper here shown as a roll 26, and feed rolls 28 and 30. These rolls are all driven, and their arrangement is such that an operator facing the front of the machine (Fig. presents with his right hand the end of an insole blank, for example, to the right side of the feed rolls which carry it against and then over the top of the applying roll to receive a coating of cement on the under surface thereof, after which the operator grasps the edges of the insole with his left hand, and places it in a rack (not shown) for drying.

Assisting in the presentation of the work is an inclined trough-like table 32 (Figs. 5 and 8) which is carried by a pivot 34 positioned at the upper end of a bracket 36 which is clamped against a key 38 on the back flange I4 of the frame and is held there by a screw 40. The screw passes through a slot 42 in the bracket to permit vertical adjustment thereof, and the bracket has an extension 44 in which is threaded a set screw 45 for adjustably clamping a post 45 piv0tally connected to the underside of the table. By this arrangement, the height and inclination of the table may be varied to suit the needs of the particular work or the habits of the operator.

The underside of the applying roll dips in a coating material, such as latex, contained in a tray 50. One portion of this tray (Fig. 5) rests upon the frame extension 22 and is clamped thereagainst by a swinging bolt 52 associated with forked lugs on the tray. A cover plate 54 having an upstanding flange 56 is used to keep any foreign matter out of the tray as well as to catch the work if it accidentally drops before the operator grasps it. At its remote end, the tray is provided with a cup-like portion 58 (Fig. 3) above which is a cage 60 for an inverted bottle having at its mouth 62 a valve 64 of the type shown in the U. S. Letters Patent 2,013,853, granted September 10, 1935, upon the application of E. J. Ray. By this means the level of the liquid in the tray is kept substantially constant.

In order to facilitate the removal of the tray for cleaning, the cage 60 is secured to a block 66 by means of a screw 68 (Figs. 1 and 5) passing through a slot 69 in the block. This block is pivoted for tilting movement about a screw stud I0 threaded in the ear box I8. The normal vertical position of the block is determined by a hook-like flange I3 upon a plate I2 which is attached by screws to the gear box I8 between it and the tiltable block 66. This plate 12 has a recess '54 cooperating with a spring stud I6 which holds the block and the cage in a tilted position indicated in broken lines in Fig. 3, thus raising the end of the bottle above the level of the tray to permit the easy removal of the latter when the clamp bolt 52 is released.

The applying roll 24, the surface of which may be either smooth or rough, has gudgeons 80 and 82 (Fig. 1). The gudgeon (Fig. 7) is provided with a conical recess to receive the yieldably mounted pivot stud 84 which has a flangeBIi on its inner end and is hollow to receive a spring 88 which urges the pivot stud toward the endgeon. A cover plate 90 attached by screws to the frame holds the spring in position and is provided with an inturned lip 92 which engages a notch in the flange 86 of the pivot stud to prevent the latter from turning with the roll.

The other gudgeon 82 is coupled at 94 (Fig. 1) to an enlargement at the end of a driven shaft 96 journaled in the gear box and connected by gears 98 and I00 to a shaft I02 joined by miter gears I04 to a drive shaft I06 on which there are mounted fast and loose pulleys I08 and III].

This shaft is driven by a belt II2 which may be moved from one pulley to another by means of a shifter fork II4 (Fig. 2) clamped to a pcripheral flange I I6 on a disk-shaped member IIB hanging from a pivot I20 carried in lugs on top of a housing I22. The flange I I6 extends around the circumference of the member I I8 thus allowing the belt to be led in at any desired angle. A swinging movement of the belt shifter member I I8 is obtained by means of a crank I24 upon the end of a rod I26 which is jouraled in a bracket I28 attached to the housing I22.

At the front of the machine this rod I26 is provided with a handle I30 and it will be seen from Fig. 5 that the crank I24 cooperates with a slot I32 in a flange I34 formed upon the member II8. When the handle I30 is in the position shown in Fig. 5, the belt shifter member 0 is held in its outer position where the belt II2 encircles the idler pulley. A counterclockwise movement of this handle I30 moves the belt shifter inwardl to transfer the belt to the pulley I08 which is fast upon the drive shaft I06. Inasmuch as the crank I24 rests at the bottom of the slot I32 in either'extreme position of the handle, it functions to lock the belt shifter in one position or the other without any effort on the part of the operator.

In the arrangement shown in Figs. 1 and 10, the applying roll is so rotated that its upper surface moves in a direction opposite to the direction of movement of the work W as the latter is pushed along by the feed rolls 28 and 30. This is done where it is desired to apply a large quantity of cement. If, on the other hand, a lesser amount of cement is desired, then a driving arrangement shown in Figs. 2 and 9 will be utilized in which an idler gear I32 is interposed between a gear 88' upon the shaft and a gear I00 upon the shaft I82.

The control of the quantity of cement carried by the applying roll to the work is effected by means of the stripper roll 26, having gudgeons I36, I38. This roll is mounted in a U-shaped carrier comprising arms I40, I42 (Fig. 3) clamped on a pivot rod I44 journaled in the gear box I8 and the end flange I6. It is essential that the surface of the stripper roll should be exactly parallel to the surface of the applying roll and, hence, to avoid extreme niceties of machine work, it has been found more practical to clamp the arms I40, I42 separately on the pivot rod by means 'of draw bolts I46 (Fig. 8) which grip the rod M4 at any point on its circumference and this is done after the stripper roll has been moved into contact with the applying roll. The assembly is then positioned to adjust the quantity of cement on the applying roll '5 by swinging the U-shaped carrier for the stripper roll about the axis of the pivot rod I44.

As may be seen from Fig. 1, the inner gudgeon I36 of the stripper roll is provided with a couplin I48 to a stub shaft I50 which is journaled in the arm I42, and which passes through a slightly larger hole in the wall of the gear box. When the applying roll is being driven counterclockwise with its upper surface moving in a forward direction, as in Fig. 2, the stripper roll is associated with the upgoing side of the applying roll by moving the carrier arms to the position shown in Figs; 5, 8 and 9. Inside this stub shaft I50 is a centering pin I52. The near gudgeon I38 of the stripper roll rotates upon a spring-controlled conical stud I54'like the stud 84 shown in Fig. 7 for supporting the adjacent applying roll. An enlargement, at the upper end of the arm I40, containing the stud I54, is received in an opening I55 in the end plate It of the frame.

The stripper roll is driven oppositely to the applying roll and, in the relation shown in Figs. 2 and 8, a gear I55 on the stripper roll shaft and within the gear box IE meshes with a gear I58 on the shaft 95 which drives the applying roll. These gears are shown in dotted lines in Fig. 9. If the arrangement of the stripper roll is that shown in Fig. 1 then the gear I56 on the stripper roll shaft meshes with the opposite side of the gear I58 on the shaft that drives the applying roll, as shown in Fig. 10.

Adjustment of the position of the U-shaped stripper carrier, with its arms I40, M2, is effected by'means of a bar I50 (Figs. and 6) which is connected to the arm I40 by means of a screw stud I62 and is provided with a reduced portion, surrounded by a spring I54, and has a still further reduced portion I65 extending through the back flange I4 of the frame and on which there is an adjusting nut I68. In order that the same adjusting bar I85 may be utilized in both positions of the stripper roll, the arm I40 is provided with similar, oppositely extending, lugs I'I0 (Fig. 5) and H2 (Fig. 3). It will be understood that this reversal of the position of the stripper roll may not be effected without moving the stub shaft I50 (Fig. 1) from one position to another in the gear box, and that when this is to be done, the stripper roll is removed by depressing its conical stud I54 and separatingdihe coupling I40.

It will be noted from Figs. 5 and 6 that an extension of the screw stud I52, which connects the adjuster I60 to the ram I40, projects into a slot I14 in the end frame I6 of the machine and opposite ends of this slot are so positioned as to serve as stops, each to limit the movement of the stripper roll toward the applying roll. The lefthand end of the slot serves for this purpose in the arrangement in Fig. 5 where the applying roll is driven counterclockwise, and the other end of the slot serves a similar purpose when the roll is driven clockwise as in Fig. 2.

Presentation of the insole blanks to the applying roll 24 is effected, as noted above, by the coacting feed rolls 28 and 30. Inasmuch as the thickness of the sheet material used for such blanks varies considerably so that some are very limp and others are relatively stiff, it becomes desirable to arrange these feed rolls in such a way that the angle of the presentation of the work may be varied. To this end, a feed roll carrier I80 is made up of a cross bar I82 (Fig. 8) joining two end plates I84 and I85 (Fig. 4). The first of these is recessed at I88 adjacent to the gear box to provide space for driving gears, and

the carrier as a whole is tiltable on the shaft I02 which serves also as a support for the lower feed roll 28. Thus the position of the axis of the lower roll 28 with respect to the axis of the applying roll 24 is unchanged by tilting movements of the carrier I80.

A clamp screw I90 is provided to hold the car rier in adjusted position and this screw extends through an arcuate slot I92 (Fig. 5) in the end plate I6 of the main frame. The upper feed roll 30 is carried upon a shaft I94 which extends between the arms of a yoke I96 (Figs. 4 and 6),

said yoke being tiltably mounted in the carrier 580 by means of a shaft I9! journaled in the end members of the carrier and held endwi'se of such yoke by set screws. Tilting movement of the yoke carrying this upper roll 30 is permitted by an arcuate slot I98 in the end plate 84, and the upper roll is pressed toward the lower roll, to grip the work, by means of a spring 200.

Thus a forwardly tilted position of the carrier is used when limp pieces are to be coated, so as to hold them more firmly in contact with the cement roll and to insure that all of the surface of the work will be coated. When the work pieces are stiffer, the carrier may be tilted to the right where the feed rolls "are more nearly above one another. It is also possible to control the feeding of pieces which are not of equal thickness across their width, by tilting the rolls forwardly thereby to twist the pieces into firm contact.

This spring 205 is mounted upon an extension of a screw 252 threaded in a split lug 204 which is provided with a clamp screw 255 so that after the position of the screw 202 has been adjusted. it may be clamped in position. The screw 252 is provided with an abutment 258 against which an upstanding arm 2H) upon the yoke I96 rests. The arm is bifurcated to receive the extension of the screw and the spring 250 bears against a washer resting against the other face of the arm 2I0 The tension of this spring may be independently adjusted by a nut 2 which is held in adjusted position by a lock nut 254. A cover 2I6 hinged upon a cross bar 2I5 extending between the sides of the table 32 rests against the upper side of the cross bar I82 of the carrier regardless of the adjusted position of the-latter and prevents the operator from getting his fingers between the feed rolls.

As was noted above, the lower feed roll 28 is secured to the driven shaft Hi2 and in order that the upper feed roll may be driven in any position of the yoke with respect to the carrier or in any position of the carrier with respectjto the applying roll, a driving arrangement shown in Figs. 9 and 10 is utilized from which it is evident that the pinions are located in a recess I88 of the end plate I84 of the carrier. Starting with the driven shaft I02, it will be seen that a pinion 220 thereon meshes with an idler 222 on a stub shaft 223 carried in the end plate I84, which idler 222 turns another idler 224 loose upon the pivot shaft I01 of the yoke. This last idler 225 serves to drive a pinion 226 upon the shaft I94 of the upper feed roll and, since the movement of the yoke is around the center of the shaft I91, the meshing of the latter two pin ions is not disturbed by any movementof the yoke and, hence, of the upper feed roll 30.

With some kinds of insole blanks, there is a tendency of the trailing end to tip up after it leaves the feed rolls and before the whole end or heel area has been coated by the applying roll. This difiiculty is avoided by the action of apressr plate 230 which is secured to the cross bar I82 of the carrier by screws extending through vertical slots in the presser plate and which thus can be adjusted into the best position for preventing the tilting action just described.

In operating the machine it will first be decided whether it is desired to employ the arrangement shown in Fig. 1, where the top of the applying roll 24 moves oppositely to the surface of the work W, or the arrangement shown in Fig. 2, where it moves with the work. Having reached that decision, the driving gears in the gear box 18 will be set up in one or the other of these illustrated arrangements and the stripper roll 26 and its U-shaped carrier will be positioned accordingly so that the stripper roll cooperates with the upgoing side of the applying roll and either lug I10 or I72 on the carrier arm N59 is connected to the adjuster I60. Then the feed roll carrier will be adjusted by means of the clamp screw i 95 so as to direct the work downwardly more or less, against the surface of the applying roll to cause it to hug the upper surface of the applying roll thereby to receive a, complete and uniform coating. The degree of tipping of the feed roll carrier will depend largely upon the thickness and flexibility of the work.

The position of the abutment 208, by means of which the approach of the upper feed roll to the lower feed roll is determined will be reset if necessary; also, the tension of the spring 200 may be adjusted. The tilt of the table 232 having been set for greatest convenience in accordance with the particular work, the operator will hold an insole blank in the right hand and slide it down the table until it reaches the bite of the feed rolls which will carry it into contact with the applying roll and thence under the plate 230, and when it projects far enough, it will be grasped by its periphery in the operators left hand and transferred to a drying rack.

When removing the tray 50 for any desired purpose, after loosening the clamp bo1t52 therefor, the bottle cage 60 will be tilted to the inclined position shown in Fig. 3 where it will be held by the engagement of the friction pin 16 in the recess 14. When the tray has been replaced in its position the cage may be tilted back until the block 66 to which it is attached engages the flange 13 on the small plate 12. It will then be in operating position ready for use.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination, a coating-applying roll, means for supplying coating material to that roll, a tiltable carrier adjacent to said applying roll, feed rolls in said carrier coacting to grip a piece of work, said carrier being tiltable about the axis of one feed roll, means for clamping the carrier in any of a plurality of angularly related operating positions, thereby to determine the angle of presentation of the work to the applying roll,

by said feed rolls, and means for driving said feed rolls in any operating position.

2. In combination, a coating-applying roll, means for supplying coating material to that roll, a tiltable carrier adjacent to said applying roll, coacting feed rolls in said carrier, spring means for pressing one of said rolls against a piece of work resting on the other roll, means for clamping the carrier in any one of a plurality of operating positions, and means mounted on the carrier for determining the limit of approach of one of said feed rolls to the other.

3. In combination, a coating-applying roll, means for supplying coating material to that roll, a tiltable carrier adjacent to said applying roll, feed rolls on said carrier coacting with opposite sides of a piece of work, means for pressing one of said rolls against the work, means for clamping the carrier in adjusted position, and adjustable means mounted on the carrier for adjustably determining the pressure of said rolls in gripping the work.

4. In combination, a coating-applying roll, means for supplying coating material to that roll, a tiltable carrier adjacent to said applying roll, a pivoted yoke on said carrier, a feed roll mounted in said yoke, another feed roll mounted on said carrier to cooperate with the first feed roll, means for driving said feed rolls in any position, and means mounted on the carrier for adjusting the position of the yoke to determine the minimum spacing between said rolls when no work is present.

5. In combination, a coating-applying roll, means for supplying coating material to that roll, a tiltable carrier adjacent to said applying roll, a pivoted yoke on said carrier, a feed roll mounted in said yoke, another feed roll mounted on said carrier to cooperate with the first feed roll, and a screw threaded in the carrier having an abutment coacting with said yoke for determining the approach of the feed rolls to each other, and having a spring for urging the feed rolls toward each other.

6. In combination, an applying roll, means for carrying a piece of work over said applying roll, means for driving the applying roll, a stripper associated with the upgoing side of said applying roll, means for supporting said stripper comprising a rod supported for turning below the applying roll to move the stripper toward and away from the applying roll, arms on the rod providing bearings for the ends of the stripper, a single device for turning the rod and both arms as a unit, and drawbolts for clamping said arms to said rod in plural positions around its periphery with the adjacent faces of said stripper and said applying roll parallel.

'7. In combination, a frame, a driven applying roll therein, means for supplying coating material to the underside of said roll, a U-shaped support pivoted to the frame at the base of the U, a stripper roll removably mounted therein, means connected to the frame for adjusting the U- shaped support, and means for connecting said adjusting means to said stripper-roll-support at either of a plurality of positions, thereby permitting the stripper roll to be positioned on the upgoing side of the applying roll regardless of the direction in which the latter is driven.

8. In combination, a frame having spaced stops, an applying roll on said frame, means for supplying coating material to said applying roll, a stripper roll associated with the upgoing side of the applying roll, a pivoted carrier removably supporting said stripper roll, a rod connected to the frame for adjusting the position of said pivoted carrier, and a member for connecting the adjusting rod to the carrier, said connecting member extending into a position between said stops with the stops positioned to determine the limit of approach of the stripper roll toward opposite sides of the applying roll.

9. In combination, a frame having spaced stops and, a driven applying roll rotatably mounted in said frame, a supply tray beneath said applying roll, a stripper roll adapted to be associated with the upgoing side of the applying r011 regardless of the direction in which the latter is driven, a movable carrier removably supporting said stripper roll, a spring urging said stripper roll carrier toward the applying roll, means connected to the frame for adjusting the position of said carrier, a stud for connecting said adjusting means to the carrier upon opposite sides of the latter, said connecting stud being positioned between and engageable with said stops, the latter serving as limiting means to determine the limit of movement of the stripper roll toward one side or the other of the applying roll.

10. In combination, an applying roll, a tray for supplying coating material to the underside of said roll, an inverted bottle for supplying coating material to said tray and extending below the sides thereof, a valve closing the mouth of the bottle, a pivoted support for said bottle, and friction means for holding said support in a tilted 20 position such that the bottle mouth is then above the sides of the tray.

11. In combination, a frame, an applying roll journaled in said frame, an open tray underlying said applying roll to supply coating material to the underside thereof, a pivoted bottle support on said frame, a bottle supported thereby in inverted position to maintain a constant level in the tray, a valve closing the mouth of the bottle, rigid means for limiting the tilting movement of said support into its normal operating position, and friction means for holding the said support in an inoperative position which facilitates withdrawal of the tray.

HARRY PHILLIPS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,053,730 Minkow Sept. 8, 1936 2,225,457 Langener Dec. 17, 1940 2,318,600 Dixon May 11, 1943

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