US2323942A - Machine for operating upon shoes - Google Patents

Description

July 13, 1943. H. F. SMITH 7 2,323,942

MACHINE FOR OPERATING UPON SHOES FiledMa'rch 24, 1942 3 Sheets-Sheet 1 July 13, 1943. H. F. SMITH 2,323,942

MACHINE FOR OPERATING UPON SHOES Filed March 24, 1942 3 Sheets-Sheet 2 July 13, 1943. H. F. SMITH I 2,323,942

MACHINE FOR OPERATING UPON SHOES Filed March 24; 1942 s Sheets-Sheet s Patented July 13, 1943 UNETED STATES PATENT OFFICE Shoe Machinery Corporation,

Flemington,

N. J., a corporation of New Jersey Application March 24, 1942, Serial No. 436,017

18 Claims.

This invention relates to machines for operating upon shoes, and is herein illustrated as embodied in a machine for operating upon the inseam materials and welts of lasted shoes.

In the manufacture of welt shoes, after the upper has been lasted and the welt has been attached thereto, the materials of the inseam are usually trimmed close to the row of stitches connecting the welt, the upper and the channel flap, after which it is desirable to pound down the inseam materials and flatten out the welt prior to a sole attaching operation, in order that the sole will fit closely on the bottom of the lasted shoe. It is an object of the present invention to provide an improved machine of the type referred to, which will be especially adapted to facilitate the presentation of the work to the machine and to guide it past the operating instrumentalities, as well as being rapid and smooth in its operation.

To this end and as illustrated, the invention provides, in a machine of the type referred to, a rotatable beating tool, and a pair of members arranged to engage therebetween the welt of a lasted shoe to be operated upon to feed the shoe past the beating tool. Preferably and as shown, the members are rolls which operate to flatten the welt, and the beating tool is arranged to engage the inseam materials to beat them down as a shoe is advanced past the tool. Preferably, too, and as shown, one of the rolls is resiliently mounted for movement toward or away from the other, thereby to facilitate positioning of the work in the machine, and is so shaped as to enter the welt crease of a shoe for positioning and guiding the shoe relatively to the beating tool.

These and other features of the invention are disclosed in the following specification and in the accompanying drawings, and are pointed out in the claims.

In the drawings,

Fig. 1 is a view in side elevation of a beating machine constructed in accordance with the invention;

Fig. 2 is a vertical cross sectional view of the upper portion of the machine shown in Fig. 1;.

Fig. 3 is a vertical cross sectional view of the upper portion of the machine showing certain of the operating instrumentalities on an enlarged scale;

Fig. 4 is an end view of a portion of the machine, showing the relation of the operating tool to the work;

Fig. 5 is an end view, partly in section, of the beating tool in engagement with work positioned in the machine;

Fig. 6 is a side view, partly in section, illustrating the operation of a slashing knife forming part of the mechanism of the machine; and

Fig. 7 is a plan view of a portion of a lasted shoe after the welt ha been slashed.

The invention is illustrated in connection with a machine for performing beating operations upon a shoe, such as a lasted shoe I0, Fig. 5, having a welt .l2 and trimmed inseam materials l4. The operating instrumentalities comprise a combined feed roll and work support 16 and a combined feed and backing roll l8 arranged frictionally to engage opposite sides of the welt l2 for flattening the welt and for advancing the shoe past a rotary beating tool l9 arranged to pound down the inseam materials of the shoe.

The backing or feed roll l8 comprises'a ring 20, Figs. 2 and 3, secured to an enlarged head 22 on a hollow shaft 24, positioned in a bearing 26 in an arm 28 of the machine frame 30. The roll is arranged for rotation about the axis of the shaft, and cooperates with the work support Hi to advance a shoe past the work support and the beating tool, and at the same time exerting pressure upon the welt to flatten it.

The work support I6 is in the form of a conical roll, Figs. 2 and 4, the outer surface 29 of which extends tangentially of the outer surface of the roll I8. The work support is beveled as shown at 3| to facilitate the engagement of the roll in the welt crease of a shoe in positioning the shoe relatively to the tool l9 and in guiding the shoe past the tool. The work support It is pivoted upon a bracket 32, mounted for vertical movement in a collar 34 and held against rotation by a key 35. The bracket is normally urged upwardly toward the roll 18 by a stiff spring 36 located within the collar, and having its lower end bearing upon a bushing 38 threaded into the collar. The pressure of the spring is readily adjusted by rotating the bushing 38 in the collar 34, the bushing being secured in adjusted position by a lock nut 39.

The work support 16 is rotated by means of a shaft 40 extending through a sleeve 4| carried by the bushing 38 and positioned centrally of the collar 34, the shaft having at its upper end a gear 42 in mesh with a pinion 44, carried by the bracket 32 and which, in turn, is in mesh with a gear 46 mounted upon a stud 48 and meshing with teeth 50 on the work support. The shaft 40 has at its lower end splines 52 slidably connecting the shaft with a gear 53 which meshes with a pinion '54, mounted upon a horizontal shaft 56 and is arranged to be rotated by means of a sprocket 58 engaging splines 59 on shaft 56 and driven by a chain 60.

In order to provide for adjustment of the work support I6 laterally of the feed roll I6, to support welts of various widths, the sleeve 34 is mounted upon a base 62 having a dovetailed portion 64, resting upon a horizontal projection 66 on the machine frame. The base with the sleeve and work support can be adjusted laterally of the feed roll by means of a screw 68, carried by the projection 66 and making threaded engagement with the lower portion of the base.

To provide for depressing the work support I6, to permit the insertion between the support and the feed roll I8 of the welt of a shoe to be operated upon, there is provided a treadle I connected by rods I2 and I3 to the lower end of the shaft 40, so arranged that upon depression of the treadle the work support will be lowered against the resistance exerted by the spring 36.

The beating tool I9 comprises a hub I4, Figs. 2, 3 and 4, formed upon one end of a shaft I5, and having four guideways 'I6 spaced 90 apart and in which are positioned beating members I8 having curved work engaging surfaces 80 which are generally circular in cross section, but are slightly relieved in the direction of rotation of the tool which, as shown in Fig. 4, is in a clockwise direction. The beating members are provided with slots 82 extending diagonally across the axes of the members, each slot having positioned therein a pin 84 carried by a plate 86 secured by a bolt 88 to the shaft I5. In order simultaneously to adjust the beating members outwardly of the axis of the shaft, the bolt 88 is loosened and the plate is turned, thereby causing the pins 84 to force the beating, members inwardly or outwardly, depending upon the direction of rotation of the plate. After the members have been adjusted, the bolt 88 is tightened, and the members are held in their adjusted position by bolts 90 extending through elongated slots 92 in the members and into the hub. The outer end of the shaft I5 is supported by ball bearings 94 positioned Within the head 22 of the shaft 24, the other end of the shaft I5 being supported in a ball bearing 96 supported upon the frame 30.

Various parts of the machine are driven from a pulley 98 through a belt I60 which passes over an idler II and over a pulley I02 on a shaft I04 which carries a pinion I66 meshing with a gear I08. The last-mentioned gear has secured thereto a pinion H0 in mesh with a gear II2 secured I to the sleeve 24 for rotating the feed roll I8. The gear II2 carries a sprocket II4, which drives the chain 60 to effect rotation of the work support I6. The gears are so selected that the pressure roll I8 and work support 16 are driven at substantially the same surface speed, the rotation of the pressure roll being approximately 60 R. P. M. The beating tool I9 is driven by a separate belt II6, which passes over an idler II! and over a driving pulley I I8 to effect rotation of the shaft I5 at a rate of about 2500 R. P. M.

When the welt is attached to the shoe upper, portions of the welt passing around the toe portion of the shoe are usually puckered, due to the sharp curve along which the welt is bent. Consequently, in order to cause the welt to lie fiat, it is customary to slash it alon the toe, after which it can be more readily flattened out. Accordingly, there is provided a slashing knife I20, which can be operated under manual control to produce slashes in the toe portions of the welt, such as slashes I22 in Fig. 7. Preferably, the knife has a thin tapered end portion I24. The knife is arranged to slide along a bracket I26 positioned adjacent to and slightly above the work table I6, and is carried by a lever I28 pivoted thereto at one end, and having upon its other end a stud I30. This stud is positioned in a groove I32 in an oscillating member I34, pivoted on the frame and connected to an arm I36 mounted upon an eccentric I38. Connected to the lever I28 is a link I40 pivoted upon a bell crank lever I42 arranged to be actuated by a rod I44 operatively connected to a treadle I46 (Fig. 1) by a system of pivoted links I48, I50 and I52, and a rod I54. continuously rotated by means of a belt I56 driven by the pulley H8. When the parts are in the positions show-n in Fig. 3 in which the stud #30 is at the axis of the pivot of the member I34, movement of the arm I36 under action of the eccentric causes the member I34 to be oscillated about the stud I38 without producing any movement of the knife. However, upon depression of the treadle I46, the roll is shifted along the groove I32 into a position such that the eccentric will impart a reciprocating movement to the knife to produce one or more slashes I22. The length of the stroke of the slashing knife I20 is controlled by the amount which the stud I30 is shifted along the groove I32 in the oscillating member I34, which, in turn, is proportional to the distance the rod I 44 is depressed. In order to restrict the stroke of th knife to a predetermined length, there is provided a screw stop I58 (Fig. 1) adapted to be engaged by an abutment I60 on the link I58 when the treadle I45 is depressed, thereby limiting downward movement of the rod I44 and consequently limiting the movement of the stud I30 to control the length of stroke of the slashing knife.

In the operation of the mechanism above described, the treadle I0 is depressed to lower the work supporting roll I6. The shoe to be operated upon is then positioned with the welt thereof resting upon the work support I6, with the beveled portion of the support extending into the welt crease of the shoe, after which the treadle is released, and the spring 36 forces the work support with the work in position thereon up against the pressure feed roll I8. Upon rotation of the rolls I6 and I8, the shoe is moved between the rolls past the beating tool I9, the operator exerting a light pressure upon the shoe to maintain it in contact with the work support I6. During the operation, the pressure exerted by the rolls is effective to flatten out the welt of the shoe, and the beating members I8 of the beating tool I9 are effective to pound down the inseam materials of the shoe. As the shoe is advanced past the rolls and the toe portion thereof is reached, the operator may depress the treadle I49 to cause the slashing knife I28 to produce one or more slashes in the toe portion of the welt. The construction and arrangement of the parts above described thus provides mechanism by which a shoe can be readily presented to operating instrumentalities and advanced automatically past such instrumentalities at a substantially uniform speed, which ensures uniform operation of the instrumentalities upon the work.

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

Th eccentric I38 is arranged to be 1. A machine for operating upon shoes comprising a pressure roll, a work supporting roll adjacent to the pressure roll, means mounting the work supporting roll for movement toward and away from the pressure roll and for movemerit laterally thereof, a beating member adjacent to the pressure roll, and means for driving the rolls in a direction to advance a shoe to be operated upon past the beating roll.

, 2. A machine for operating upon shoes comprising a work support, a pressure roll located adjacent to the work support, resilient means normally operable to force the work support toward the pressure roll for gripping between them the welt of a shoe to be operated upon, a

beating tool located adjacent to the pressure roll, and means for rotating the pressure roll and the work support in a direction to advance a shoe past the beating tool.

3. A machine for operating upon shoes comprising a rotary toothed tool for beating down the inseam materials of a shoe, two rolls for engaging the welt of the shoe to be operated upon, and means for rotating the rolls to advance the shoe past the beating tool.

4. A machine for operating upon shoes comprising two pressure rolls adapted to engage opposite sides of the welt of a lasted shoe to be operated upon, a beating tool located adjacent to the rolls, and means for rotating the rolls in a direction to advance the shoe past the beating tool.

5. A machine for operating upon shoes comprising a rotary beating tool, a pair of rolls located adjacent to the beating tool and constructed and arranged to engage opposite sides of a welt of a shoe to be operated upon, resilient means for forcing the rolls toward each other to grip the welt between them, and means for rotating the rolls to advance the shoe past the beating tool, thereby to flatten out the welt and beat down the inseam materials of the shoe.

6. A machine for operating upon shoes comprising a beating tool, a conical work support adapted to enter the welt crease of a shoe presented to the machine with the inseam materials of the shoe located in engagement with the beating tool, a pressure roll cooperable with the work support to frictionally engage the welt of the shoe, and means for rotating the rolls in the direction to advance the shoe past the beating tool.

'7. A machine for operating upon shoes comprising a rotary beating tool, a pressure roll and a conical work support located adjacent to the beating tool, the pressure roll and the work support being in alinement for the purpose of engaging opposite sides of a welt of a shoe to be operated upon, means for rotating the pressure roll and the work support in a direction to advance the shoe past the beating tool, and means for operating the beating tool independently of the pressure roll and the work support.

8. A machine for operating upon shoes comprising a conical work support adapted to enter the welt crease of a lasted shoe, a pressure roll eated adjacent to the work support, means for forcing the pressure roll and the work support toward each other to grip between them the welt of the shoe presented to the machine, a beating tool located adjacent to the pressure roll, and means for rotating the pressure roll and the work support in a direction to advance the shoe past the beating tool.

9. A machine for operating upon shoes comprising a rotary beating tool, a pair of rolls located adjacent to the beating tool, one of said rolls having a conical portion adapted to enter the welt crease of the shoe to guide the shoe, and means for rotating the rolls in a direction to advance the shoe past the beating tool.

10. A machine for operating upon shoes comprising a rotary beating tool, a pair of rolls located adjacent to the beating tool, one of said rolls having a conical portion adapted to enter the welt crease of a shoe to guide the shoe, means for rotating the rolls in a direction to advance the shoe past the beating tool, and means for moving the rolls relatively to each other to pro,- vide for the location of the welt of the shoe between the rolls.

11. A machine for operating upon shoes comprising a beating tool, a pair of rolls located adjacent to the beating tool, one of the rolls having a conical portion adapted to enter the welt crease of a shoe for guiding the shoe, means for rotating the rolls in a direction to advance a shoe past the beating tool, means for moving the rolls relatively to each other to provide for the location of the welt of the shoe between the rolls, and means mounting the conical roll for movement laterally of the beating tool for locating the shoe in predetermined operative relation relatively to the tool.

12. A machine for operating upon shoes comprising a beating tool, a pair of rolls located adjacent to the beating tool, one of the rolls having a conical portion adapted to enter the welt crease of a shoe for guiding the shoe, means for rotating the rolls in a direction to advance a shoe past the beating tool, means for moving the rolls relatively to each other to provide for the location of the welt of the shoe between the rolls, means mounting the conical roll for movement laterally of the beating tool for locating the shoe in predetermined operative relation relatively to the tool, and means for rotating the beating tool at a high speed relatively to the speed of the rolls.

13. A machine for operating upon shoes comprising a rotary beating tool, a pair of rolls located adjacent to the beating tool, one of said rolls having a conical portion adapted to engage the welt crease of a shoe to guide the shoe, means for rotating the rolls in a direction to advance the shoe past the beating tool, means for moving the rolls relatively to each other to provide for the location of the welt of the shoe between the rolls, and means for shifting the position of one of the rolls relatively to the other for locating the shoe in operative position with trimmed inseam materials in alinement with the beating tool.

14. In a machine for operating upon shoes, a beating tool comprising a plurality of arms, each of which terminates in a curved beating member, a pair of rolls adjacent to the beating tool, one of said rolls having a portion constructed and arranged to engage the welt crease of a shoe to be operated upon to locate the shoe in predetermined position relatively to the beating members, and means for rotating the rolls in a direction to advance the shoe past the tool.

15. In a machine for operating upon shoes, a hollow shaft, a pressure roll carried upon the shaft at one end thereof, a second shaft extending through the hollow shaft and having a beating member located on one end thereof adjacent to the pressure roll, a work supporting roll adjacent to the pressure roll, means for driving the pressure roll and the work supporting roll at substantially the same speed, and means for driving the beating tool at a comparatively high speed relatively to the rolls.

16. In a machine for operating upon shoes, a beating tool comprising a hub having a plurality of radially extending grooves formed therein, a plurality of beating members located in the grooves, each of the beating members having a slot inclined relatively to the groove in which it is positioned, and a plate carried by the hub and having a plurality of pins extending into the grooves in the members, whereby upon rotation of the plate the members are adjusted simultaneously along the grooves.

17. A machine for operating upon shoes comprising a beating tool, two feed rolls constructed and arranged to engage opposite sides of the welt of a shoe presented to the machine, means for driving the rolls in a direction to advance the shoe past the beating tool, a welt slashing knife located adjacent to the rolls, and means for reciprocating the slashing knife comprising an arm arranged to be continuously oscillated about a fixed axis, a link having its inner end pivoted to the knife and its outer end slidably connected to the arm, and means for shifting the position of the outer end of the link relatively to the arm for varying the stroke of the knife.

18. A machine for operating upon shoes comprising a beating tool, means adapted to engage the welt of a shoe to be operated upon for feeding the shoe past the beating tool, a welt slashing knife located adjacent to the feeding means, and means for reciprocating the knife comprising an arm arranged to be oscillated about a fixed axis, a link having its inner end pivoted to the knife and its outer end slidably connected to the arm, and manually operated means for shifting the position of the outer end of the link along the arm for varying the length of stroke of the knife.

HOMER F. SMTLTH.

Images