US3276406A - Channel cutter for shoe sole stitching machines - Google Patents

Description

Oct. 4, 1966 Filed July 31,

J. FERRARA 3,276,406 CHANNEL CUTTER FOR SHOE SOLE STITCHING MACHINES 1963 5 Sheets-Sheet 1 FIG. 1

CHANNEL CUTTER FOR SHOE SOLE STITCHING MACHINES Filed July 31, 1963 J. FERRARA Oct. 4, 1966 5 Sheets-Sheet 2 a mm 1966 J. FERRARA 3,276,406

CHANNEL CUTTER FOR SHOE SOLE STITCHING MACHINES Filed July 31, 1963 5 Sheets-Sheet 5 United States Patent 3,276,406 CHANNEL CUTTER FUR SHOE SOLE STlTCHlNG MACHENES John Ferrara, 641 Park Ave, Rochester, N.Y.; Charles Ferrara, administrator of the estate of said John Ferrara, deceased Filed .luly 31, 1963, Ser. No. 298,960 9 Claims. ((11. 112-45) This invention relates to a channel cutter for shoe sole stitching machine, for the purpose of cutting a channel in the bottom of the sole for receiving the stitching which unites the sole to the rest of the shoe structure, so that upon completion of the stitching operation the stitching is more or less hidden in the channel, with the result of a neater and more attractive appearance of the finished article.

An object of the invention is the provision of a generally improved and more satisfactory channel cutter for this purpose.

Another object is the provision of a channel cutter which is useful both in resoling or repair operations, and in original shoe manufacturing operations.

Still another object is the provision of a channel cutter so designed and constructed as to offer minimum resistance to pulling the shoe sole along during the stitching operation, thereby eliminating the breakage of the awl which has frequently occured in the past, when the cutter has offered too great resistance to the feeding movement performed by the lateral movement of the awl.

A still further object is the provision of channel cut ting mechanism so designed and constructed as to be easily applied as an attachment to and existing shoe sole stitching machine already in use in the field, such as in a shoe repair shop.

These and other desirable objects may be attained in the manner disclosed as an illustrative embodiment of the invention in the following description and in the accompanying drawings forming a part hereof, in which:

FIG. 1 is a fragmentary schematic side elevation of a shoe sole stitching machine of a conventional kind widely used, with a preferred embodiment of the channel cutter applied thereto;

FIG. 2 is a fragmentary schematic front elevation of part of the stitching machine with the channel cutter applied thereto, parts of the channel cutter being broken away and parts being shown in vertical section;

FIG. 3 is a vertical section taken approximately on the line 3-3 of FIG. 2;

FIG. 4 is a top plan view of the channel cutter attachment; and

FIG. 5 is an elevational view thereof, viewed from the left end.

Many previous attempts have been made to develop satisfactory channel cutters of one kind or another, and the present applicant has secured several prior patents on various forms of cutters, including the following United States Patents: 1,924,737, August 29, 1933; 2,148,546, February 28, 1939; 2,197,796, August 23, 1940; 2,343,501, March 7, 1944; 2,523,948, September 26, 1950.

The prior developments, especially the present applicants most recent Patent 2,523,948, have been reasonably satisfactory under many circumstances, but still have left something to be desired in case of attachment to existing shoe sole stitching machines already in use in repair shops, and in reliability of speedy operation without breakage of the awl when the cutting mechanism hits a relatively hard portion of the leather. These disadvantages of prior constructions are overcome by the present improved construction.

The present construction may be applied to a variety "ice of stitching machines already well known and in use. A typical shoe sole sewing or stitching machine as commonly used in the industry includes the following parts:

(a) A stationary work support on which the marginal edge of the shoe is placed in an inverted or upside-down position, with the shoe sole uppermost and with the welt or other portion of the shoe to which the sole is to be stitched, underneath the sole and on top of the work support.

(b) A presser foot mechanism bearing down on the sole of the shoe (in the inverted position thereof) to hold the shoe firmly down on the stationary work support, the presser foot mechanism normally being pivoted on a horizontal axis so that it may be raised for easy insertion of the margin of the shoe between the work support and the presser foot, and then may be brought down onto the sole of the shoe with adequate pressure.

(c) A needle which moves upwardly and downwardly in an arc in a fixed plane extending in a general direction from front to back of the machine, the needle being mounted above the work support and presser foot and coming down through the sole of the shoe during the downward stroke of the needle, then returning upwardly to a position above the shoe sole.

((1) A feeding slide which reciprocates horizontally back and forth in a direction from side to side of the machine, approximately perpendicular to the plane in which the needle operates.

(e) An awl mounted below the work support for arcuate movement upwardly and downwardly to penetrate through the sole and the accompanying welt from beneath, the awl operating not in a fixed plane the Way the needle does, but rather in a plane which moves with the feeding slide, the awl mechanism either being mounted on or at least deriving a motion from the feeding slide.

As well understood in the art, the awl comes up from beneath, penetrates the sole of the shoe and the accompanying welt, and then while the sOle and welt are impaled on the awl, the awl moves bodily laterally through the space or distance of one stitch, which brings the awl to the same vertical plane in which the needle operates, and in direct alinement with the needle. Usually this feeding motion is to the left, when viewed from the standpoint of an operator standing in front of the machine. Then the awl is drawn downwardly, and the needle comes down into the same hole which has just been formed through the sole by the awl. When the awl has been completely withdrawn from the sole and the welt, the awl then moves back laterally in the opposite direction (normally to the right) through the distance of one stitch, and again comes upwardly to make a new hole through the sole and the welt. By the time the awl has penetrated upwardly through the Welt and the sole, the needle has completed its stitch and has been withdrawn upwardly from the sole, so that the awl then performs another leftward feeding motion (along with the feeding slide) to carry the shoe leftwardly through the space of another stitch, this operation being repeated indefinitely.

As above stated, these parts just mentioned are typical of shoe sole sewing machines of various models and makes. The channel cutting attachment of the present invention is adaptable to any conventional sewing machine having these parts just mentioned. Merely for the sake of a specific example, the present invention is shown as applied to a stitching machine of the kind d-isclosed in United States Patent 473,870, issued April 26, 1892, for an invention of French and Meyer. But those skilled in the art will readily understand, as the description of the exemplary embodiment of the present invention proceeds, that the invention may be readily applied to any other model or make of shoe sole stitching machine having the general characteristics briefly outlined above, simply by making appropriate changes in the shapes or dimensions of the various mounting brackets and connecting parts which serve to mount the attachment on the stitching machine.

Referring now to the drawings, certain parts of the basic stitching machine are shown in dot-dash lines, so as to differentiate more conspicuously between the basic machine known per se, and the attachment or accessory which constitutes the present invention. Thus the basic machine may comprise, for example, various stationary frame parts indicated at 11, and a feeding slide schematically shown at 13, corresponding for example to the feeding slide B3 in the above mentioned Patent 473,870 (hereafter sometimes referred to as said patent). There is an awl schematically shown at 15, corresponding to the awl a2 in said patent, the awl moving upwardly and downwardly in an arc, and also moving leftwardly and r-i-ghtwardly with the feeding slide 13. There is also a needle 17 which moves downwardly and upwardly in a fixed plane, and which corresponds to the needle b2 in said patent.

The work support is schematically indicated at 19. On it there are placed, in the usual inverted position, the marginal portions of the shoe sole 21 and the welt 23, with the sole uppermost and with the welt resting directly upon the work support 19. This work support corresponds, for example, to the work support d in said patent.

The basic machine also includes presser foot mechanism having a presser foot movable downwardly into engagement with the sole 21 to apply pressure thereto during the stitching operation, and movable upwardly away from the sole when the completed shoe is to be removed from the machine or a different shoe is to be placed on the Work support. The exact details of the presser foot mechanism of the basic machine are not important for purposes of the present invention, and it is suificient to say that in the basic machine as here partially illustrated, there is a horizontal shaft 25 on Which arms 27 and 29 are mounted for oscillation, corresponding respectively to the shaft 2 and the arms a and c in said patent. Spring mechanism of known form indicated in general at 31, without attempting to describe the details thereof, tends to turn the arms 27 and 29 in a counterclockwise direction when viewed as in FIG. 1, thereby tending to cause downward movement of the presser foot itself which is on the left or forward end of the arm 27, in a position over the work support 19.

The parts thus far described are the pertinent parts of one known form of basic machine, as above mentioned. Referring now to the parts which constitute the present accessory or attachment, this comprises a bracket 41 (FIG. 1) having its bottom shaped to fit on an appropriate part of the oscillatable presser foot mechanism, so that the bracket and the parts carried thereby will oscillate as a unit with the presser foot mechanism when the presser foot is raised or lowered. When the basic machine with which this accessory is to be used, is a machine of the general type shown in said Patent 473,870, it is convenient to remove and discard the handle ex shown in FIG. 3 of the drawings of said patent, and attach the lower end of the bracket 41 in the position where the lower end of the handle of lever ex is attached in said patent.

Mounted at the top of the bracket 41, and supported thereby, is the main part of the channel cutting mechanism of the present invention, and preferably also the driving motor for the same, although it is possible to place the driving motor in a different location and connect it to the channel cutter mechanism by a flexible driving shaft, if desired. In the preferred form of construction, the upper end of the bracket 41 carries a hollow housing indicated in general at 43, having an opening 45 of rectangular cross section in a horizontal plane, and

extending approximately vertically when the cutter mechanism is in its normal cutting position. Of course it will not be vertical but will 'be titlted, whenever the cutter mechanism is swung upwardly and rearwardly. This opening 45 constitutes a guideway for a movable block 47 which slides up and down in the guideway 45, as further explained below. The slide block 47 is held against forward displacement from the guideway 45 by means of a front plate 49 on the front face of the housing 43, held in place thereon by screws 51. The rear face and the left end face of the block 47 fit against corresponding faces of the guideway 45, the front face of the rblock fits against the inner face of the plate 49, and the righthand face of the block 47 fits against an adjustable gib member 55 preferably of tapered or wedge formation as shown in FIG. 2, so that a slight vertical adjustment of the gib 55 will produce the desired degree of tightness of the slide 47 in its guideway. The tapered gi-b 55 is held by clamping screws 57.

Extending horizontally through suitable openings in the housing 43 is a shaft 61, with its axis extending paral-' lel to the direction of motion of the feeding slide 13. This shaft 61 is supported for rotation in suitable bearings 63, one on either side of the slide block 47, roller bearings being convenient for this purpose and being illustrated. When necessary, the bearings are lubricated through conventional lubrication fittings 65 mounted on the top of the housing 43. The slide block 47 is formed with a slot extending through the full dimension of the block from left to right, and elongated from front to back and opening at the rear face of the block 47, and the shaft 61 passes through this slot 67. The portion 69 of the shaft which passes through the slot is eccentric With relation to the portions which are journaled in the bearings 613, and the slot 67 is dimensioned to have a snug fit in a vertical direction on this eccentric portion 69 of the shaft. Therefore, as the shaft rotates, the block 47 will be caused to slide upwardly and downwardly in the guideway 45.

In the preferred construction, the right end of the housing 43 is formed with fingers 71 which carry at their right ends a mounting ring 73. A small electric motor 75 is mounted on the ring 73 by means of bolts 77, with the armature shaft 79 of the motor preferably in direct alinement with the shaft 61 and coupled directly thereto by a sleeve coupling 81 held by set screws 83. Thus the operation of the motor will turn the shaft 61, and the eccentr-ic portion 69 on the shaft will cause vertical reciprocation of the slide block 47.

The slide block 47 is extended downwardly below the bottom of the housing 43, and there is expanded laterally to provide one or more bearing portions 91 furnishing a bearing for a shaft or rod 93 which is arranged parallel to the shaft 61 and which is longitudinally slidable in the bearing portion 91, but is made non-rotatable therein, either by making the shaft 93 of appropriate non-circular shape (e.g., triangular or square) or by using a spline 95. At the left end of the shaft 91 an arm 97 is clamped tightly to it, preferably in an adjustable manner by having the shaft-encircling portion of the arm split as indicated at 99 and contracted by a bolt 101 to clamp tightly on the shaft. At the lower end of the arm 97 there is an approximately vertical slot 103 in which is held the upper end or shank portion of the cutter 105 held in the slot 103 by a bolt 107. From this shank portion, the cutter extends angularly leftwardly as at 109 and terminates in a downwardly extending cutting blade portion 111 which has a sharp lower edge, slightly rounded upwardly to the right, when viewed from the front as in FIG. 2.

This knife blade or cutter member 109 works upwardly and downwardly in a vertical slot in the special presser foot indicated in general at 121 (FIG. 3), which replaces the regular presser foot e2 shown in said patent. This special presser foot has one presser foot portion 123 just behind the knife blade 109 and another presser foot portion 125 just in front of the knife blade 109, divided from each other by a slot 127 which form-s a guide for the upward and downward movements of the cutter blade. The main portion or body portion 121 of the presser foot may be secured to the front part 27a of the presser foot lever 27 by bolts or screws in the same locations as the presser foot mounting screws shown in FIG. 3 of said Patent 473,870 but not identified by reference numerals. Or, in addition to or as a substitute for such screws, the present presser foot may be held by bolts 129 (FIG. 3) which pass through an elongated slot 131 in a forwardly extending flange 133 formed integrally on the front of the lower part of the bracket 41. By loosening the bolts 129 and moving them in one direction or the other along the slot 131, the position of the special presser foot and therefore the position of the knife blade can be accurately adjusted so that the knife blade is directly in line (in the direction of feeding motion) with the awl and the needle 17, so that the cut made by the cutting portion 111 of the knife blade (as further explained below) will be in precisely the right position so that the stitching will occur in the cut, rather than to one side thereof.

Mounted on the feeding slide 13 by means of a bolt 141 (FIGS. 1 and 2) is an upwardly extending arm 143 which is suitably connected to the shaft 93 to cause longitudinal or axial movement of the shaft from the longitudinal movement of the feeding slide 13. Depending upon the position of the motor 75 and the available space between it and the housing 43 of the slide 47, the connection between the arm 143 and the shaft 93 may be at the right hand end of this shaft. But usually it is preferred to make the connection at an intermediate point in the length of the shaft. For this purpose, the bearing portion 91 of the slide block 47 is cut away or grooved intermediate its length, as seen at 145, and the rod or shaft 93 has a portion 147 of reduced diameter, lying in this cutaway notch 145. The upper end of the arm 143 is slotted at 151 and loosely embraces the reduced diameter part 147 of the shaft 93, sufficiently tightly to insure interengagement between the arm and the shaft during all parts of the upward and downward reciprocating strokes of the block or slide 47. Since the arm 143 is rigidly mounted on the feeding slide 13, it is seen that as the slide 13 makes its feeding movements rightwardly and leftwardly when viewed from the front as in FIG. 2, the upper end of the arm 143 will correspondingly move rightwardly and leftwardly (within the notch 145) and this will cause corresponding rightward and leftward motion of the shaft 93, in a direction longitudinally or axially of such shaft. This feeding motion is not very great in extent, being only the distance of one stitch.

Since the arm 143 is rigid on the feeding slide, and since the cutter assembly is mounted for limited oscillation on the shaft so as to be able to raise the presser foot from the work and to lower it again into contact with the work, it follows that there must be provision for relative upward and downward swinging movement between the arm 143 on the one hand and the shaft 93 on the other hand. Therefore, the above mentioned slot 151 which embraces the reduced diameter part 147 of the shaft 93, is formed as an arcuate slot, concentric with the shaft 25. Conveniently, the rear end of the slot is open as shown in FIG. 3, but the slot is long enough so that the shaft 93 remains embraced by the slot and does not escape from the open rear end of the slot even when the presser foot assembly is swung upwardly and rearwardly to its maximum extent, when raising the presser foot from the work.

To summarize briefly the operation of the present attachment or accessory, in connection with the stitching operations performed by the basic machine, the presser foot and the cutter are moved upwardly away from the work support 19, to enable the marginal edge of the shoe sole 21 and welt 23 to be placed on the work support. This upward movement is accomplished by pressing rearwardly and slightly upwardly on the main block or housing 43 of the cutter attachment, using this as an appropriate handle, since the original handle provided on the presser foot lever for this purpose, on the original machine, has been removed to allow space for mounting the lower end of the bracket 41. The usual conventional latch for holding the presser foot in its down position is released, of course, just as it would be if the present attachment were not on the machine.

After placing the edge of the sole and welt in proper position, the presser foot (together with the cutting blade 111) is brought downwardly onto the top of the inverted shoe sole, just as would be the case if the present attachment were not used. The electric motor is turned on if not previously running, although normally it is left running even when the presser foot is raised to permit removal of a shoe on which the stitching has been completed, and insertion of the next shoe.

The operation of the motor rotates the shaft 61, and the eccentric portion 69 thereof, rotating in the slot 67 of the slide block 47, causes the slide block to reciprocate upwardly and downwardly in the housing 43. This upward and downward motion is transmitted to the shaft or rod 93. It is a relatively slight upward and downward stroke, the distance of the stroke being only the relatively slight depth of the channel C which is to be cut in the shoe sole 21. The bracket 143, although it embraces the shaft or rod 93, does not interfere with these slight upward and downward reciprocations of the rod, because the slot 151 in the rod is made sufliciently wide (in a vertical direction) to permit the necessary upward and downward reciprocation of the rod or shaft.

When the stitching machine is started in its normal operation, it will make stitches in the normal manner, the awl 15 coming up through the welt 23 and sole 21 to make an opening therethrough, and then when the awl has penetrated the welt and sole, the feeding slide 13 will move leftwardly through the space of one stitch, moving the awl leftwardly with it, so that the awl pulls the welt and shoe along through the feeding motion. The bracket or arm 14 3 being attached to the feeding slide 13 parta'kes of the same leftward feeding motion, and causes corresponding leftward feeding motion of the shaft or rod 96, sliding the same axially in its bearing 91 in the bottom part of the slide block 47. This causes corresponding leftward motion of the upwardly and downwardly reciprocating cutter parts 97, 105, 199 and 11 1, so that during the feeding motion of the shoe sole, there is no relative lateral motion of the cutter blade relative to the shoe sole, but only an upward and downward motion. Consequently the cutter blade does not constitute any drag whatsoever on the feeding motion of the shoe sole, and does not increase the resistance to the feeding motion so that there is no increased resistance to the leftward feeding movement of the awl. This avoids the breakage of the aiwl which occurs so easily and so frequently when it is attempted to cut a channel by means of a stationary blade which is drawn through the sole as the sole performs its feeding movement.

At the end of one leftward feeding movement, the awl is withdrawn downwardly and the need-1e 17 comes downwardly into the hole previously made by the awl, and forms the stitch with the conventional thread (not shown). When the awl has cleared the bottom face of the welt 23, the feeding slide 13 moves rightwardly through the space of one stitch, to bring the awl to the position for its next penetration of the sole. During this rightward movement the sole is stationary, but the rightward movement of the feeding slide, transmitted through the member 143, causes corresponding rightward movement of the shaft or rod 93, thereby moving the cutter parts 97, 105, 109, and 11:1 rightwardly through the distance of one stitch. It will be remembered that the operation of the motor 75 is causing rapid upward and downward reciprocation of the cutter blade 199, 111 at this time, so that the channel C is easily formed in the sole during '2 the rightward movement of the cutter blade. At this time the sole 2/1 is stationary and the awl 15 is not even penetrating the sole, so that the formation of the channel C does not cause any stress or strain on the awl.

At the conclusion of the rightward feeding motion of the feeding slide 13 (accompanied, as above explained, by corresponding rightward motion of the cutter blade) the awl 15 once more comes up to penetrate the welt and the sole, and the upward motion of the awl brings it directly in to the channel C which has been formed. After penetrating, the awl moves leftwardly again as before, and then downwardly when the needle 1'7 comes down to form a stitch. The horizontal part of the stitch now lies in the channel C instead of protruding on the face of the shoe sole. This action of leftward feeding movement of the shoe sole, alternating with rightward movement of the rapidly reciprocating cutter blade while the shoe sole is stationary, is repeated indefinitely, as often as required in the sewing or stitching operation.

A very eifective and satisfactory channel is thus formed, for receiving the stitching on the exposed face of the sole. After completion of stitching, when the face of the sole is buffed or burnished this tends to mash down the edges of the channel and completely or partially covers the stitching which is in the channel, thus improving the appearance of the exposed face of the shoe sole.

'In some cases it may be desired to omit the right and left feeding motion of the cutter blade, and to utilize merely the upward and downward motion thereof. If this is desired, the feeding arm 143 may be removed, and the shaft or rod 93 may be anchored against longitudinal movement by tightening the set screws 161 (FIG. 2).

The motor 75 is preferably driven at such rate of speed that the cutter blade will make some six to twenty downward strokes during the formation of one stitch. A low speed in this range is sufficient when the cutter blade moves with the feeding slide, as preferred. A higher speed is preferably when the cutter blade is disconnected from the feeding slide.

It is seen from the foregoing disclosure that the objects and purposes of the invention are well fulfilled. It is to be understood that the foregoing disclosure is given by way of illustrative example only, rather than by way of limitation, and that without departing from the invention, the details may be varied within the scope of the appended claims.

What is claimed is:

1. A shoe sole channel cutter for a shoe sole stitching machine of the type including a work support for supporting a shoe sole in an inverted position, a feed member mounted for reciprocation approximately horizontally, and an awl mounted for upward and downward movement to penetrate a shoe sole on said work support and to be withdrawn therefrom and operatively connected to said feed member to move approximately horizontally therewith, said channel cutter including a cutter blade mounted for upward and downward reciprocation to cut a channel in a shoe sole resting on said work support, a reciprocating block, guide means for guiding said block for upward and downward movement while restraining it against substantial movement in an approximately horizontal direction, motor means for reciprocating said block upwardly and downwardly, means including a horizontally slidable connection for reciprocating said cutter blade upwardly and downwardly by the reciprocating movements of said block, and means operatively connecting said cutter blade to said feed member to move said cutter blade approximately horizontally by the reciprocating movements of said feed member, said horizontally slidable connection enabling said cutter blade to move horizontally without causing corresponding horizontal movement of said reciprocating block.

2. A shoe sole channel cutter for a shoe sole stitching machine of the type including a work support for supporting a shoe sole in an inverted position, presser foot means swingable upwardly and downwardly and including a presser foot for engaging a sole resting on said work support during a stitching operation, and a feed member mounted for reciprocation approximately horizontally, said channel cutter including a reciprocating member, guide means for guiding said reciprocating member for upward and downward movement said guide means being mounted on said presser foot means to swing bodily therewith when said presser foot means is swung to move said presser foot upwardly and downwardly, motor driven means for reciprocating said reciprocating member relative to its said guide means, said reciprocating member including means forming a guideway extending in a direction substantially parallel to the direction of reciproeating movement of said feed member, a cutter assembly including a first portion mounted for movement along said guideway of said reciprocating member and a second portion including a sharp cutting blade adjacent said presser foot and mounted for movement relative thereto in an upward and downward direction to act upon a shoe sole located between said presser foot and said work support and also for movement in a direction parallel to the direction of feeding movement of said feed member, and an arm operatively connecting said feed member to said cutter assembly to impart the approximately horizontal feeding movements of said feed member to said cutter assembly while said cutter assembly is also being moved upwardly and downwardly by the reciprocation of said reciprocating member.

3. A construction as defined in claim 2, wherein said means for reciprocating said reciprocating member in cludes an approximately horizontally extending shaft journ-alled in said guide means and having an eccentric portion, said reciprocating member acting as a follower engaged by said eccentric portion and moved thereby.

4. A construction as defined in claim 2, wherein said first portion of said cutter assembly includes a shaft slidable longitudinally but non-r'otatably in said guideway.

5. A construction as defined in claim 2, wherein said first portion of said cutter assembly includes a shaft slidable longitudinally but non-rotatably in said guideway and wherein said arm engages said shaft to move it longitudinally.

6. A construction as defined in claim 5, further including means for disconnecting said arm from said shaft and means for locking said shaft against longitudinal movement when it is desired to have said cutter assembly reciprocate upwardly and downwardly without moving approximately horizontally with said feed member.

7. Shoe sole channel cutter mechanism for use with a stitching machine of the type including presser foot means mounted for upward and downward swinging movement and feeding means including a part mounted for approximately horizontal reciprocation, said cutter mechanism comprising:

(a) guide means adapted to be mounted on said presser foot means to swing bodily upwardly and downwardly therewith, in such position that said guide means will be approximately vertical when said presser foot means is swung down to normal operative position engaging a shoe sole;

(b) a reciprocating member mounted for upward and downward movement along said guide means;

(c) rotary means for causing upward and downward ricprocation of said reciprocating member along said guide means;

(d) means on said reciprocating member forming a guideway extending approximately horizontally and approximately parallel to the direction of reciprocation of said part of said feeding means;

(e) slide means mounted for longitudinal sliding movement along said guideway means on said reciprocating member;

(f) a shoe sole channel cutting member rigidly connected to said slide means to partake of the longitudinal sliding movement of said slide means as well as the upward and downward movements thereof caused by the upward and downward reciprocation of said reciprocating member; and

(g) a connecting member adapted to be mounted on said part of said feeding means and to engage said slide means to impart to said slide means the approximately horizontal reciprocation movement of said part of said feeding means.

8. Shoe sole channel cutter mechanism for use with a stitching machine of the type including presser foot means mounted for upward and downward swinging movement and feeding means including a part mounted for approximately horizontal reciprocation, said cutter mechanism comprising:

(a) guide means adapted to be mounted on said presser foot means to swing bodily upwardly and downwardly therewith, in such position that said guide means will be approximately vertical when said presser foot means is swung down to normal operative position engaging a shoe sole;

(b) a reciprocating member mounted for upward and downward movement along said guide means;

(c) rotary means for causing upward and downward reciprocation of said reciprocating member along said guide means;

((1) a shoe sole channel cutting member; and

(e) means operatively connecting said cutting member to said reciprocating member to impart to said cutting member the upward and downward movements of said reciprocating member.

9. Shoe sole channel cutter mechanism for use with a stitching machine of the type including presser foot means mounted for upward and downward swinging movement and feeding means including a part mounted for approximately horizontal reciprocation, said cutter mechanism comprising:

(a) guide means adapted to be mounted on said presser foot means to swing bodily upwardly and downwardly therewith, in such position that said guide means will be approximately vertical when said presser foot means is swung down to normal operative position engaging a shoe sole;

(b) a reciprocating member mounted for upward and downward movement along said guide means;

(c) rotary means including a shaft and an eccentric for causing upward and downward reciprocation of said reciprocating member along said guide means;

(d) a motor mounting bracket connected to said guide means;

(e) an electric motor mounted on said bracket for driving said shaft;

(f) means on said reciprocating member forming a guideway extending approximately horizontally and approximately parallel to the direction of reciprocation of said part of said feeding means;

(g) slide means mounted for longitudinal sliding movement along said guideway means on said reciprocating member;

(h) a shoe sole channel cutting member rigidly connected to said slide means to partake of the longitudinal sliding movement of said slide means as well as the upward and downward movements there of caused by the upward and downward reciprocation of said reciprocating member; and.

(i) a connecting member adapted to be mounted on said part of said feeding means and to engage said slide means to impart to said slide means the approximately horizontal reciprocation movement of said part of said feeding means.

References fitted by the Examiner UNITED STATES PATENTS 1,924,737 8/1933 Ferrara 112-45 2,148,546 2/ 1939 Ferrara 112- 2,197,796 4/ 1940 Ferrara 1l245 2,343,501 3/ 1944 Ferrara 112-45 2,523,948 9/1950 Ferrara 112-45 FRANK J. COHEN, Primary Examiner. P. D. LAWSON, Assistant Examiner.

Claims (1)

1. A SHOE SOLE CHANNEL CUTTER FOR A SHOE SOLE STITCHING MACHINE OF THE TUPE INCLUDING A WORK SUPPORT FOR SUPPORTING A SHOE SOLE IN AN INVERTED POSITION, A FEED MEMBER MOUNTED FOR RECIPROCATION APPROXIMATELY HORIZONTALLY, AND AN AWL MOUNTED FOR UPWARD AND DOWNWARD MOVEMENT TO PENETRATE A SHOE SOLE ON SAID WORK SUPPORT AND TO BE WITHDRAWN THEREFROM AND OPERATIVELY CONNECTED TO SAID FEED MEMBER TO MOVE APPROXIMATELY HORIZONTALLY THEREWITH, SAID CHANNEL CUTTER INCLUDING A CUTTER BLADE MOUNTED FOR UPWARD AND DOWNWARD RECIPROCATION TO CUT A CHANNEL IN A SHOE SOLE RESTING ON SAID WORK SUPPORT, A RECIPROCATING BLOCK, GUIDE MEANS FOR GUIDING SAID BLOCK FOR UPWARD AND DOWNWARD MOVEMENT WHILE RESTRAINING IT AGAINST SUBSTANTIAL MOVEMENT IN AN APPROXIMATELY HORIZONTAL DIRECTION, MOTOR MEANS FOR RECIPROCATING SAID BLOCK UPWARDLY AND DOWNWARDLY, MEANS INCLUDING A HORIZONTALLY SLIDABLE CONNECTION FOR RECIPROCATING SAID CUTTER BLADE UPWARDLY AND DOWNWARDLY BY THE RECIPROCATING MOVEMENTS OF SAID BLOCK, AND MEANS OPERATIVELY CONNECTING SAID CUTTER BLADE TO SAID FEED MEMBER TO MOVE SAID CUTTER BLADE APPROXIMATELY HORIZONTALLY BY THE RECIPROCATING MOVEMENTS OF SAID FEED MEMBER, SAID HORIZONTALLY SLIDABLE CONNECTION ENABLING SAID CUTTER BLADE TO MOVE HORIZONTALLY WITHOUT CAUSING CORRESPONDING HORIZONTAL MOVEMENT OF SAID RECIPROCATING BLOCK.

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