US2752772A - Shoe upper roughing machine - Google Patents

Description

July 3, 1956 F. HLOBIL 2,752,772

SHOE UPPER ROUGHING MACHINE Filed April 4, 1955 4 Sheets-Sheet l A ram/5Y5.

July 3, 1956 F. HLOBIL 2,752,772

SHOE UPPER ROUGHING MACHINE Filed April 4, 1955 4 Sheets-Sheet 2 A TORNEYS.

July 3, 1956 F. HLOBIL SHOE UPPER ROUGHING MACHINE 4 Sheets-Sheet 3 Filed April 4, 1955 ....ii.:-i-,, W M y m July 3, 1956 F. HLOBIL 2,752,772

SHOE UPPER ROUGHING MACHINE Filed April 4, 1955 4 Sheets-Sheet 4 TOP/V575.

United States Patent SHOE UPPER ROUGHING MACHINE Frantisek Hlohil, Astoria, N. Y., assignorto General Shoe Machinery Corporation, New York, N. Y., a corporation of New York Application April 4, 1955, Serial No. 498,799 28 Claims. (Cl. 69-6-5) This invention relates to shoe machines, and more particularly to a shoe upper roughing machine.

The primary object of the present invention is to generally improve shoe upper roughing machines. A more particular object is to provide such a machine which is easy to operate, and which permits of rapid work for high output. Still another object is to provide such a machine which readily and safely provides a margin of uniform width which is not roughened, and the Width of which may be changed when desired by changing a part of the machine.

A further object of the invention is to provide means for precision adjustment of the depth or bite of the roughing tool, thus afiording accurate control of the degree of roughness produced. This same adjustment is also useful to compensate for wear of the roughing wheel. Another object is to provide for a side-to-side or axial adjustment of the roughing wheel, this being desirable in order to center the roughing wheel with respect to the guide Wheel of the machine, thus making it possible to employ roughing wheels of differing widths, particularly when of different type.

Still another object of the invention is to facilitate handling the lasted shoe upper during the roughing operation, thereby making it possible for unskilled help to successfully operate the machine and to produce good quality work. For this purpose I provide both a flanged guide wheel and a depth gauge to fix the height of the upper relative to the roughing tool, and I provide two separate but cooperating feed means which at least partially hold as well as feed the upper relative to the roughing tool.

A still further object is to provide an improved exhaust fan and filter system to carry away the material abraded from the upper. Another object is to provide means for sharpening the roughing tool as it is being used. Still another object is to provide means for dressing the sharpening wheel itself when desired. A further general object is to provide a machine which is adapted for use on substantially all styles and sizes of cemented shoes. In addition it is so designed as to afford ready change of the roughing wheel and the main guide wheel, thus further increasing the universal adaptability of the machine.

To accomplish the foregoing objects, and. other more specific objects which will hereinafter appear, my invention resides in the shoe upper roughing, machine and the elements thereof, and their relation. one to another, as are hereinafter more particularly described in the following specification. The specification is accompanied by drawings, in which:

Fig. 1 is a perspective view showing a machine embcdying certain features of the invention;

Fig. 2 is a side elevation of the upper part of the machine, with the exhaust duct removed to better show the other parts;

Fig. 3 is a partially sectioned elevation, drawn to larger 2,752,772 Patented July 3, 1956:

scale, with the top feed wheel removed in order to better show the end of the exhaust duct;

Fig. 4 is a transverse section through the roughing wheel and guide wheel, taken approximately in the plane of the line 4-4 of Fig. 3;

Fig. 5 is a fragmentary section similar to a part of Fig. 4 but showing a modified form of guide Wheel;

Fig. 6 is a plan view of a shoe upper after it has been partially roughened in the machine;

Fig. 7 is a transverse section looking in the same general direction as Fig. 4, but with the section taken through the axis of the top feed wheel;

Fig. 8 is a perspective view of the upper part of the machine with the exhaust duct turned back, and the front cover raised, but with the top feed wheel in normal posi= tion;

Fig. 9 is a front elevation of the upper part of the machine, with a part of the feed wheel cut away;

Fig. 10 is a fragmentary plan view showing the relation of the exhaust duct to the top feed wheel; and

Fig. 11 is explanatory of the mechanism for automatically reciprocating the sharpening wheel as it rotates.

Referring to the drawing, and more particularly to Fig. l, the machine comprises a base 12 and an upright pedestal 14 carrying upper and lower head portions 16 and 18. The roughing wheel is located at 20. The exhaust duct is shown at 22, and leads to a filter contained in a housing 24, to which there is also connected an exhaust fan or blower 26. The main driving motor is shown at 28. The work may be temporarily rested on. a table 30 before or after operating on the same.

Referring now to Figs. 2 and 3 of the drawing, the main operating parts of the machine comprise a roughing wheel 32, a guide wheel 34, a top feed wheel 36 (shown in Fig. 2 but omitted in Fig. 3), and a gauge in the form. of a roller 38 (shown in Fig. 3 but omitted in Fig. 2).. It will be understood that the inverted lasted upper 40 (Fig. 2) is held against the guide Wheel 34 and. upward against the depth gauge roller 38 and feed wheel 36.. The guide wheel 34 acts also as a margin shield, and preferably is driven to act also as an additional feed wheel.

Referring now to Figs. 2, 4 and 7, the guide wheel 34 is mounted at the upper end of a shaft 42, which is generally upright but preferably slants forwardly at a substantial angle as shown. In this case the forward tilt is 30 from the vertical.

Referring to Fig. 4, it will be seen that the guide wheel 34 is concavo-convexv in configuration, with the concavesurface on top. This has a number of advantages, one being that the peripheral portion of the guide wheel. which is in actual contact with. the shoe upper 40 is disposed in a substantially horizontal plane, so that the top of the inverted shoe may be held substantially horizontally, much as though the shaft 42 were vertical. and car is driven by a worm 46 carried by a shaft 48, which in.

this case is the main drive shaft of the machine.

Reverting to Fig. 4, it will be seen that another advantage of the concave shape of guide wheel 34 is that it provides clearance for the roughing wheel 32, which otherwise would interfere with the guide wheel.

Because the guide wheel desirably is used also as a feed wheel, in such case it preferably is made of a frictional material, typically rubber, as indicated at 50. The wheel has a metal top disc 52, and a metal bottomv disc 54, both formed integrallywith or secured to a hub 56..

The rubber material 50 (which may also be artificial rubber or other suitable frictional plastic) is molded in place in the wheel, and is bonded to the metal surfaces.

The bottom disc 54 is somewhat smaller in diameter than the frictional portion 50 of the wheel, but the top disc 52 maybe made larger in diameter by an amount sutficient to form a margin shield which will prevent roughing the upper too close to the edge of the shoe. Referring to Fig. 6, it will bee seen that about half the peripheral portion 58 of the upper has been roughened, as shown at 60, but that a marginal or edge portion 62 has not been roughened. This portion 62 is protected by the margin shield or projecting flange portion of the top disc 52.

. If it be desired to change thewidth of the shielded margin it is merely necessary to remove the guide wheel 34 and to substitute another guide Wheel with a flange portion of different width. For this purpose the Wheel 34- is held on the upper end of shaft 42 by means of a mounting screw 64 (Fig. 4). The wheel is keyed to rotate with the shaft by one or more keys 66 on the upper end of the shaft, mating with notches at the lower end of the hub 56 of the wheel.

A modified guide wheel is shown in Fig. 5, in which the upper disc 68 is formed integrally with the hub 70, while the lower disc 72 is a separate element. The rubber friction wheel 74 may be made separately, and is then clamped between the discs 68 and 72, these being assembled by means of threads shown at 76, and the assembly being locked by a set screw 78. The hub portion mates with the upper end of shaft 42 at its keys 66 as previously described, and the parts are held together by means of a screw 80. Here again the top disc 68 is of increased diameter in order to act as a margin shield. To change the margin width the entire wheel may be changed as, previously described, or, if desired, the same lower disc 72 and friction portion 74- may be assembled and used with a different top disc 68.

The roughing wheel may be a wheel carrying emery paper or sand paper, or it may be a wire brush, or it may be a grater. I prefer to use either a wire brush or a grater, the former being shown in Fig. 1, and the latter in the remaining figures of the drawing. The wheel may be made of felt, when working with plastic covered materials which are affected by heat.

Referring to Figs. 3, 9 and 10 of the drawing, the roughing Wheel 32 is carried in overhung relation at one end of a shaft 82. The wheel comprises an outer body part 84 (Fig. 3), an inner body part 86, and a g'rater part 88. The surface of the latter has teeth 90 struck therefrom, forming a hole at each tooth, as is the case with an ordinary kitchen grater. The side edges of the grater portion 88 are preferably reduced in di ameter, to be received in grooves in the body parts 84 and 86, as shown at 92 and 94. These parts are clamped together axially and may be held in assembled relation in any desired fashion, as by means of screws (not shown), welding, soldering or the like. A preferred as sembly is separable for replacement of the greater portion 88 when worn. The wheel assembly is held on shaft 82 by means of a main mounting screw 96, which may serve also as an assembly screw.

The cylindrical re-entrant surface of the inner member 86 is largely cut away to form a series of passages 98. The starting end of the exhaust duct 100 is brought immediately adjacent the open side of the roughing wheel 32, and it will be seen that particles cut by the teeth 90 are sucked through the openings of the teeth, then through the passages 98, and thence into the exhaust duct 100, which leads to the exhaust pipe 22 shown in Fig. l, and so to the filter casing 24.

Depth gauge 38 is best shown in Figs. 3, 7 and 9 of the drawing, referring to which it will be seen that there is an idle roller 38 rotatably mounted at the bifurcated lower end of a support arm 102, which in turn is fixedly secured on a part 104 of the exhaust duct 100. The

is a resulting side-to-side movement.

depth gauge 38 is immediately adjacent the roughing wheel, the blocks 103 being omitted. They are shown here merely to illustrate how a roughing wheel of greater axial width may be accommodated by using one or more of the spacers 103, if needed. The depth gauge 38 is set at a height consistent with that of the margin flange of the guide wheel 34.

One feature of the present invention is the provision for easy and precise adjustment of the height of the roughing wheel relative to the guide wheel 34 and relative to the gauge 38. This is important for two reasons. One is to control the depth or degree of roughness, and the other is to compensate for wear of the roughing wheel. Referring to Fig. f the drawing, the portion 106 (and with it the subjacent portion 108) of the head of the machine is vertically movable on the main body of the head. This movement is controlled by means of a vertical screw, operated by a handle 110 projecting at the top of the machine. This handle is also shown in Fig. 2, and the resulting adjnstmentmay be locked, as by means of a locking handle shown at 112 in Figs. 8 and 9.

It will be understood that the rear surface of the part 106 of the head and the mating front surface of the stationary part of the head, that is, the relatively slidable vertical surfaces, are provided with appropriate guides or ways, for example dovetail-shaped slots or other such means commonly employed in the milling machine art, and in other machinery. The adjusting screw 110 and lock 112 similarly may be of conventional character used in other machines. The resulting movement of the roughing wheel is a movement relative to the guide wheel 34 and the gauge 38, and thus directly changes the depth of cut or degree of roughness.

The roughing wheel also may be adjusted from side to side, that is, axially. Referring to Figs. 8 and 9, it will be seen that the part 108 is slidable relative to the part 106, along a surface or plane 114. The adjustment is made by means of a screw 116 turned by a handle 118 (Fig. 9), and the adjustment may be locked by means of a handle 1 20. Inasmuch as the roughing wheel and its shaft are carried by the part 108 of the head, there I The side-to-side movement does not affect the drive mechanism because the chain sprocket gear 122 (Fig. 9) which drives shaft 82, is splined to and slidable on the shaft. The side-toside adjustment is convenient in order to center the roughing wheel relative to the guide wheel 34, particularly when changing the type or width of wheel. The sliding plane 114 may be made truly horizontal, or it may be sloped somewhat as here shown. A horizontal plane has obvious advantages, and the main reason a sloping plane was here employed is that .machine partsof the indicated character were already available. The change in height caused by the slope 114 may be compensated by adjusting screw 110. The sliding surfaces at 114 have dovetail shaped slots or like guides, as is known.

It has already been mentioned that there is a top feed wheel 36. This is best shown in Fig. 7, and is preferably an inverted toothed crown wheel, so shaped that the teeth bear against the top surface of the inverted upper. The wheel is mounted at the lower end of a generally upright shaft 124, carried in a generally upright bearing arm 126. Referring now to Fig. 2, the arm 126 projects downward from and may be formed integrally with a part 128 of the head, the latter being covered by a cover 130 (shown raised in Figs. 8 and 9). The arm 126 may be swung upwardly about the axis of its horizontal drive shaft 132 (Fig. 2). The shaft carries a worm 134 meshing with a worm gear 136 at the upper end of the. feed wheel shaft 124 previously referred to. Worm shaft 132 is driven by a sprocket gear 138 and chain 140.

The ability to swing the arm 126 forwardly and upwardly is of convenience not only for servicing or for changing the toothed feed wheel, but also to facilitate swinging the exhaust duct out of the way, as shown in Fig. 8, for access to the roughing wheel. The flanged ends 142 and 144 are hinged at 146, and when the duct 100 is swung back again on its pin 146, a stud or lock pin 148 isreturned to a position to be engaged and clamped by a camming hook 150 operated bya locking lever 152. At such time arm 1 26 is raised, though shown down in Fig. 8.

Referring now to Fig. 10, which is a plan view, the exhaust duct 100 is offset rearwardly as indicated at 154, in order to clear the feed wheel arm 126. It will be evident that with this particular arrangement the arm 126 must be swung forward and upward out of the way before the exhaust duct 100 can be turned counterclockwise out of the way about its pin 146, thus exposing the open side of the roughing wheel 32 for servicing or for removal.

The exhaust duct 108- is itself removable by removal of the pin 146, held by a cotter pin at the bottom (see Fig. 8), it being understood that when a wire brush is substituted for the grating wheel here shown, the exhaust duct section 100 is also changed to another in which the starting or lefthand end opens downward at a point immediately adjacent the roughing point. This modification of the invention is shown in Fig. l of the drawing, in which it will be seen that exhaust duct 100' differs from exhaust duct 100 in being turned down :at its lefthand or starting end.

The shaft 124 of the toothed feed wheel 36 is generally upright, but actually slopes somewhat, both forwardly toward its lower end, and sidewardly from right to left toward its lower end as viewed from the front of the machine. The purpose of the first slope is to bring the teeth of the feed wheel 36 into engagement with the 'shoe at one part only of the feed wheel. If the shaft were truly vertical, and if the top of the inverted shoe were truly horizontal, all of the teeth would engage the shoe simultaneously, with no feed action. The forward slope provides an effective engagement as shown in Fig. 7.

The sideward slope is intended to bring the feed wheel 36 fairly close to the roughing wheel, or very close when the latter is of maximum width. Ideally the feed point might be at the center plane of roughing wheel, as can be the case with the guide wheel 34, but when the roughing wheel is disposed in a plane transverse to the direction of movement of the edge of the shoe, as here shown, that is not possible for the feed wheel 36. The roughing wheel is put in the plane here shown because it then more readily accommodates shoes of different type, particularly ladies high heeled shoes in which there is a very sharp curvature between the forward and rear portions of the shoe.

The sideward angular slope of the shaft has an additional advantage, in that it provides a component of feed force in a direction away from the operator and toward the flanged periphery of the guide wheel 34. Thus the machine itself actually assists the operator, and practically locks the shoe in proper position to roughen the upper uniformly around its periphery, while maintaining a protected margin of uniform width outside the roughened portion. This also counteracts the effect of the roughing tool, which preferably brushes in. a direction away from the guide wheel (clockwise as viewed in Figs. 2, 4, and 7 in order todraw the leather onto the last, instead of away from the last.

In accordance with a further feature of the present invention, the roughing wheel may be continuously or occasionally sharpened by a suitable sharpening wheel. In the present case this is an abrasive grinding, wheel, made of stone or Carborundum or other appropriate material. Referring to Fig. 2, the. sharpening wheel is shown at 156, and. is disposed generally behind and may be in contact with the roughing wheel 32. The sharpening wheel is itself driven by a pulley I58, belt 160, and pulley 6 162, which in turn is driven by a pulley 164, belt 166, and pulley 168, mounted on the horizontal shaft 132 previously referred to. Pulleys 162 and 164 are made fast or loose by a clutch handle 184.

The shaft 170 of the sharpeningwheel 156 carried in a gear housing 172 which is pivoted at its lower end as shown at 174. This affords radial movement of the sharpening wheel toward and away from the roughing wheel, and the resulting movement is controlled by means of a suitable threaded rod 176 and control knob 178. The adjustment may be locked by means of a lock nut 180. At its forward end the rod 176 is rotatable but not axially movable in a rearward extension of the gear housing 172. The body of the rod is threaded in the machine frame. The belt accommodates such movement without loss of friction because of an idler 172 yieldably bearing against the belt 160.

The parts last referred to are also shown in Fig. 8 of the drawing, which shows clutch handle 184 which controls the operation of the sharpening wheel. It does this by connecting pulley 164 to, or freeing it from, pulley 162. Fig. 8 also shows the considerable axial spacing between the sharpening wheel 156 and its pulley 158, which are on opposite sides of the gear housing 172.

The gear housing preferably contains mechanism for automatically reciprocating the sharpening wheel from side to side as it rotates. Mechanism of this type is already known, and probably requires no detailed description, but the principle involved will be clear from examination of Fig. 11. The sharpening wheel 156 is driven by shaft and pulley 1'58. Within the gear box 172 the shaft 170 carries a worm 186 meshing with a worm gear 188 pivoted at 190. The worm gear has an offset or crank pin 192 carrying a bearing block 194 vertically slidable in a vertical slot 196 formed in a member 198 which cannot move up and down, but which is slidable horizontally at appropriate guides or ways 2%, formed on a stationary member 202, which in turn is pivoted at 174 (Figs. 2 and 8) as previously described. It will be evident on reflection that with this arrangement the rotation of shaft 170 is accompanied by an axial reciprocation of the gear housing 172 and with it the sharpening wheel 156.

The sharpening wheel itself may be dressed on occasion, and for this purpose the machine includes a dressing tool shown at 204 in Fig. 2. It is carried at the forward end of an arm 206 mounted on a shaft 208. Referring to Fig. 9 of the drawing, the other end of shaft 208 carries a control arm 210 (Figs. 8 and 9) which may be pulled forward when it is desired to raise the dressing tool into engagement with the sharpening wheel. It might also be moved from side to side axially across the face of the sharpening wheel, but that is not necessary because the sharpening wheel itself moves axially.

The drive of the machine may be explained with reference to Fig. 2 of the drawing. The main shaft 48 in the lower part of the head of the machine carries a sprocket gear 212 which drives the sprocket chain 140 previously referred to. This runs over an idle sprocket gear 214 and around sprocket gear 138 previously referred to as driving the top feed Wheel 26. The chain runs around a sprocket gear 216 which drives the roughing wheel 32, and which preferably is freely slidably splined on its shaft, as previously explained. The chain then comes back around and idler 218 and thence back to the sprocket gear 212. It will be noted that the idlers and the horizontal portions of the chain are so disposed as to accommodate upward or downward adjustment of the roughing wheel 32.

In that connection attention may be directed to the fact that there is appreciable clearance at 220 (Fig. 3) between the exhaust duct 100 and the roughing wheel 84, to accommodate vertical movement of the roughing wheel relative to the exhaust duct. When using a grating wheel the movement to be accommodated is small. When using a wire brush the sharpening wheel may be used to maintain the brush in good condition over a more substantial change in radius, but then the configuration of the end of the exhaust duct is changed as previously described, to reach a point adjacent the bottom of the wire brush. In that case the vertical adjustment of the wire brush is not limited by the fixed position of the exhaust duct.

The main shaft 48 is itself provided with a pulley or pair of pulleys shown at 226 in Fig. 9. Referring to Fig. 1, these are driven by motor 23, through belts which are concealed by a belt guard or housing 228.

It will be understood that the gear ratios between the main shaft 48, the guide wheel 34, and the top feed wheel 36 are appropriately chosen to feed the shoe upper at the same rate, allowance being made for the fact that the grid wheel 34 is of relatively large diameter, while the feed wheel 36 is of small diameter. Much of the periphery of the shoe upper is curved, and the guide wheel 34 is further out on the curve than the feed wheel 36. It will be evident that the optimum speed ratio may be a compromise between equality for a straight-sided portion of the shoe upper, on the one hand, and inequality for a sharply curved portion of the shoe upper, for example the toe or heel portion of a small size shoe, on the other hand. Inasmuch as one only of the two feed wheels is toothed, while the other is frictional, no difiiculty arises over any small discrepancy in linear feed speed which may exist at one point or another around the shoe upper.

Referring to Fig. 2, it will be seen that the entire head portion of the machine is carried on a post 222, which is vertically slidable in pedestal 14, thus making it possible to raise or lower the head of the machine to suit the comfort of the operator. The adjustment may be locked, as by means of bolt 224.

It is believed that the construction and method of use of my improved shoe upper roughing machine, as Well as the advantages thereof, will be apparent from the foregoing detailed description. The machine shields a margin around the periphery of the shoe accurately and safely. The depth or degree of roughing is accurately adjustable in a very precise manner. The position of the roughing wheel may be adjusted from side to side, which is of assistance in balancing its action and the action of the two feed wheels of the machine on a shoe upper as it is held in the hands of the operator, and which is further valuable in affording change from one type and/or width of roughing wheel to another. I have mentioned putting the roughing wheel on center with the guide wheel, but this is approximate, for the optimum position may differ and may come somewhat between the center of the two feed wheels.

The roughing wheel is preferably covered by a stationary cover, but the cover may be conventional and has been omitted in the drawings, for clarity. There is automatic continuous exhaust of abraded particles with consequent comfort and safety for the operator. The cover relps the exhaust pipe pull all dust, splinters, brush particles, etc. away from the operator. The shoe is locked or held in position to a considerable degree by the cooperative action of the flanged guide wheel and the top feed wheel, and even a relatively unskilled operator has little difficulty in producing good work, for henecd merely hold the shoe upward in position against the depth gauge roller and the flange of the guide wheel. Thus the machine is easy to operate and will yield high production without requiring an expert operator. The machine may be used with substantially all types of cemented shoes, and may be used with substantially all shoe materials including leather, plastics, and other imitation leathers. A change of margin width may be made by changing the guide wheel. A change of roughing wheel may be made by swingingthe top feed wheel upward and the exhaust 8 duct sideward, thus exposing the roughing wheel for remoyal. Provision is made for automatic grinding (continuous or intermittent) of the roughing Wheel, whether a grater or a steel wire brush. Provision is also made for readily changing the adjacent section of the exhaust duct when changing from a grater to a wire brush.

Itwill be understood that it is not essential to drive the guide wheel 34. It will fulfill its guiding function and its margin shield function, and will assist the depth gauge in establishing the proper height at which the shoe upper is held, even when used as an idle wheel instead of being driven. Onthe other hand, the feed wheel 36 may be omitted, and reliance may be had on the guide wheel34 alone for feed purposes, it then being driven as here described. Indeed it is not essential to power feed the shoe upper, and if desired the feed wheel 36 may be omitted and the guide wheel 34 may be idle, in which case the shoe upper is moved entirely by hand. However, it speeds the Work and lessens operator fatigue to provide power feed as here disclosed.

It will be apparent, therefore, that while I have shown and described my shoe upper roughing machine in preferred forms, changes may be made in the structures shown without departing from the scope of the invention, as soughtto be defined in the following claims.

I claim:

1. A shoe upperlroughing machine comprising a guide wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of theshoe, a roughing wheel carried on a generally horizontal shaft, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, and means to drive said roughing wheel.

2. A shoe upper roughing machine comprising a guide and feed wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the, shoe, a roughing wheel carried on a generally horizontal shaft extending from side to side, precision adjustment means to raise orlower the horizontal shaft slightly relative to the guide wheel, means to drive said guide wheel, and means to drive said roughing wheel.

3. A shoe upper roughing machine comprising a static-nary frame having a lower head portion, a guide wheel carried by said lower head. portion on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, an upper head portion, a roughing wheel carried by said upper head portion, precision adjustment means to raise or lower the upper head portion'slightly relative to the lower head portion, and means to drive said roughing wheel.

4. A shoe upper roughing machine comprising a stationary frame having a lower head portion, a guide and feed wheel carriedby said lower head portion on a gen erally upright shaft, said wheel having a margin flange at the top which also helps determine the height of the shoe, an upper head portion, a roughing wheel carried by said upper head portion on a shaft extending from side to side, precision adjustment means to raise or lower the upper head portion slightly relative to the lower head portion, means to drive said guide wheel, and means to drive said roughing wheel.

5. A shoe upper roughing machine comprising a guide wheel carried on a generally upright shaft, said shaft sloping forwardly and upwardly toward the guide wheel, and said guide wheel being concave on its upper face whereby the periphery will engage the edge of an inverted lasted upper, said wheel comprising a peripheral'fiange acting as a margin shield,. a roughing wheel carried on a generally horizontal shaft extending fromside to side, precision adjustment means to raise or lower the horizontal shaft slightlyrelative to the guide wheel, and means to drive said roughing wheel.

6. A shoe upper roughing machine comprising a guide and feed wheel carried on a generally upright shaft, said shaft sloping forwardly and upwardly toward the guide wheel, and said guide wheel being concave on its upper face whereby the periphery will engage the edge of an inverted lasted upper, said wheel comprising frictional material held between top and bottom discs made of metal, said top disc being larger in diameter than the frictional material in order to provide a peripheral flange acting as a margin shield, a roughing wheel carried on a generally horizontal shaft extending from side to side, a part of the roughing wheel being received in the concavity of the guide wheel, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said guide wheel, and means to drive said roughing wheel.

7. A shoe upper roughing machine comprising a guide wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said roughing wheel, and an exhaust fan and filter system for removing and trapping material abraded by said roughing wheel.

8. A shoe upper roughing machine comprising a guide wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said roughing wheel, and an exhaust fan and filter system for removing and trapping material abraded by said roughing wheel, said roughing wheel being in the form of a hollow grater having teeth, and having holes passing therethrough at said teeth, said roughing wheel being mounted in overhung relation at one end of its driving shaft, and said exhaust system starting at the opposite side face of said roughing wheel to exhaust abraded material through the holes into the wheel and thence to the filter.

9. A shoe upper roughing machine comprising a guide feed wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft extending from side to side, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said guide wheel, means to drive said roughing wheel, and an exhaust fan and filter system for removing and trapping material abraded by said roughing wheel.

10. A shoe upper roughing machine comprising a guide and feed wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft extending from side to side, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide Wheel, means to drive said guide wheel, means to drive said roughing wheel, and an exhaust fan and filter system for removing and trapping material abraded by said roughing wheel, said roughing wheel being in the form of a hollow grater having teeth, and having holes passing therethrough at said teeth, said roughing wheel being mounted in overhung relation at one end of its driving shaft, and said exhaust system starting at the opposite side face of said roughing wheel to exhaust abraded material through the holes into the wheel and thence to the filter.

11. A shoe upper roughing machine comprising a guide wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said roughing wheel, and

10 additional means for side to side adjustment of the rough in wheel.

12. A shoe upper roughing machine comprising a guide and feed wheel carried on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, a roughing wheel carried on a generally horizontal shaft extending from side to side, precision adjustment means to raise or lower the horizontal shaft slightly relative to the guide wheel, means to drive said guide wheel, means to drive said roughing wheel, and additional means for side to side adjustment of the roughing wheel.

'13. A shoe upper roughing machine comprising a stationary frame having a lower head portion, a guide wheel carried by said lower head portion on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, an upper head portion, a roughing wheel carried by said upper head portion, precision adjustment means to raise or lower the upper head portion slightly relative to the lower head portion, means to drive said roughing wheel, and said upper head portion having additional means for side to side adjustment of the roughing wheel.

14. A shoe upper roughing machine comprising a stationary frame having a lower head portion, a guide and feed wheel carried by said lower head portion on a generally upright shaft, said wheel having a margin shield flange at the top which also helps determine the height of the shoe, an upper head portion, a roughing wheel carried by said upper head portion on a shaft extending from side to side, precision adjustment means to raise or lower the upper head portion slightly relative to the lower head portion, means to drive said guide wheel, means to drive said roughing wheel, and said upper head portion having additional means for side to side adjustment of the roughing wheel.

15. A shoe upper roughing machine comprising a guide wheel for engaging the edge of an inverted lasted upper, a roughing wheel, a feed wheel for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, and means to drive the guide wheel to act also as a feed wheel.

16. A shoe upper roughing machine comprising a guide wheel mountedon a generally upright shaft for engaging the edge of an inverted lasted upper, a roughing Wheel carried and driven by a shaft extending generally horizontally, a toothed feed wheel mounted on the lower end of a generally upright shaft for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, and means to drive the feed wheel.

17. A shoe upper roughing machine comprising a guide wheel mounted at the upper end of a generally upright shaft for engaging the edge of an inverted lasted upper, a roughing wheel carried and driven by a shaft extending generally horizontally from side to side, a toothed feed wheel of inverted crown shape mounted on the lower end of a generally upright shaft for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, and means to drive the guide wheel so that it acts also as a feed wheel.

18. A shoe upper roughing machine comprising guide means, a roughing wheel carried and driven by a shaft, an exhaust fan and filter system cooperating with said roughing wheel, an abrasive wheel engaging and acting to sharpen said roughing wheel, and means to drive said sharpening wheel.

19. A shoe upper roughing machine comprising guide means, a roughing wheel carried and driven by a shaft, an exhaust fan and filter system cooperating with said roughing wheel, an abrasive wheel engaging and acting to sharpen said rough-ing wheel, means to drive said sharpening wheel, and means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated.

20. -A shoe upper roughing machine comprising guide means, a roughing wheel carried and driven by a shaft,

an exhaust fan and filter system cooperating with said roughing wheel, an abrasive wheel engaging and acting to sharpen said roughing wheel, means to drive said sharpening wheel, means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated, a dressing tool for dressing the sharpening wheel, and nor mally operable means to move said dressing tool into or out of engagement with the sharpening wheel when desired.

21. A shoe upper roughing machine comprising a guide means, a roughing wheel carried and driven by a shaft, said wheel being hollow and provided with teeth and with holes through its periphery at the teeth, an exhaust fan and filter system cooperating with said roughing Wheel, said roughing wheel being mounted in overhung fashion at one end of its driving shaft, said exhaust system being connected to the opposite face of the roughing wheel, an abrasive wheel engaging and acting to sharpen the teeth of said roughing wheel, and means to drive said sharpening wheel.

22. A shoe upper roughing machine comprising a guide means, a roughing wheel carried and driven by a shaft, said wheel being hollow and provided with teeth and with holes through its periphery at the teeth, an exhaust fan and filter system cooperating with said roughing wheel, said roughing wheel being mounted in overhung fashion at one end of its driving shaft, said exhaust system being connected to the opposite face of the roughing Wheel, an abrasive Wheel engaging and acting to sharpen the teeth of said roughing wheel, means to drive said sharpening wheel, and means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated.

, erally horizontally from side to side, a toothed feed 23. A shoe upper roughing machine comprising a guide wheel for engaging the edge of an inverted lasted upper, a roughing wheel, a feed wheel for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, an exhaust fan and filter system cooperating with said roughing wheel, an abrasive wheel engaging and acting to sharpen said roughing wheel, and means to drive said sharpening wheel.

24. A shoe upper roughing machine comprising a guide wheel for engaging the edge of an inverted lasted upper, a roughing wheel, a feed wheel for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, an

exhaust fan and filter system cooperating with said roughing wheel, an'abrasive wheel engaging and acting to sharpen said roughing Wheel, means to drive said sharpening wheel, and means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated.

25. A shoe upper roughing machine comprising a guide wheel disposed on a generally upright shaft for engaging the edge of an inverted lasted upper, a roughing wheel carried and driven by a shaft extending generally horizontally from side to side, a toothed feed wheel mounted on the lower end of a generally upright shaft Wheel mounted on the lower end of a generally upright shaft for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, an exhaust fan and filter system cooperating with said roughing wheel, an abrasive wheel engaging and acting to sharpen said roughing wheel, means to drive said sharpening wheel, and means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated.

27. A shoe upper roughing machine comprising a guide Wheel disposed on a generally upright shaft for engaging the edge of an inverted lasted upper, a roughing wheel carried and driven by a shaft extending generally horizontally from side to side, said wheel being hollow and provided with teeth, and holes through its periphery at said teeth, a toothedfeed wheel of inverted crown shape mounted on the lower end of a generally upright shaft for engaging the top surface of the inverted lasted upper, means to drive the roughing Wheel, means to drive the feed wheel, means to drive the guide wheel to act also as a feed wheel, an exhaust fan and filter system cooperating with said roughing wheel, said roughing wheel being mounted in overhung fashion at one end of its driving shaft, said exhaust system being connected to the opposite face of the roughing wheel, an abrasive wheel engaging and acting to sharpen the teeth of said roughing wheel, and means to drive said sharpening wheel.

28. A shoe upper roughing machine comprising a guide wheel disposed on a generally upright shaft for engaging the edge of an inverted lasted upper, a roughing wheel carried and driven by a shaft extending generally horizontally from side to side, said wheel being hollow andprovided with teeth, and holes through its periphery at said teeth, a toothed feed wheel of inverted crown shape mounted on the lower end of a generally upright shaft for engaging the top surface of the inverted lasted upper, means to drive the roughing wheel, means to drive the feed wheel, means to drive the guide wheel to act also asa feed wheel, an exhaust fan and filter system cooperating with said roughing wheel, said roughing wheel being mounted in overhung fashion at one end of its driving shaft, said exhaust system being connected to the opposite face of the roughing wheel, an abrasive wheel engaging and acting to sharpen the teeth of said roughing wheel, means to drive said sharpening wheel, and means for automatically moving said sharpening wheel axially from side to side relative to the roughing wheel as the sharpening wheel is rotated.

No references cited.

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