US1948673A - Shoe finishing tool - Google Patents

Description

' Feb. 27, 1934. w. A. REED SHOE FINISHING TOOL Original Filed March 26, 1929 Patented Feb. 27, 1934 UNITED STATES PATENT OFFICE SHOE FINISHING TOOL Original application March 26, 1929, Serial No.

350,081. Divided and this application May 27,

1932. Serial No. 613,885

8 Claims.

This invention relates to shoe finishing tools and is herein illustrated as embodied in a heel scouring wheel of the type disclosed in my copending application Serial No. 350,081, filed March 26, 1929, of Which this application is a division.

It is an object of the present invention to provide a finishing tool having improved means for securing a finishing cover upon the body portion of the tool.

In accordance with a well-known practice, the illustrated finishing tool is provided with a movable means which is operable upon retraction with respect to the body portion of the tool to clamp a finishing cover upon the tool body and which is operable upon outward movement with respect to the tool body to unclamp the finishing cover. In accordance with a feature of the present invention, the illustrated tool is provided with a carrier which, upon rotary move ment about an axis extending in the direction of operative movement of the cover clamping means, is moved axially by a cam to operate the clamping means. This construction has the advantages of simplicity and compactness, and it is easy to operate.

With the above and other objects and features in view the invention will now be described with reference to the accompanying drawing and pointed out in the claims.

In the drawing,

Fig. 1 is a side elevation of the finishing wheel;

Fig. 2 is a sectional view taken on the line IIII of Fig. 1;

Fig. 3 is a view in perspective of an abrasive cover clamping mechanism; and

Fig. 4 is a fragmentary front elevation showing the wheel illustrated in Fig. 1 in operation upon the heel of a shoe.

The body of the improved finishing tool consists of a hub 10, a core 14 consisting of a disk of hard material such as wood mounted upon the hub 10, and a yieldable support 16 surrounding the periphery of the core 14. The hub 10 may be mounted in any convenient manner upon a driven shaft 12, such shafts being commonly provided with a shoulder and a threaded thrust collar between which a finishing tool may be clamped. The periphery of the core 14 is herein shown as cylindrical, but it is to be understood that a core having any usual form of periphery, for example conical or bulged outwardly at the center, may equally well be employed. The core 14 is unitary, that is, it is either integral or built up of parts which are secured to each other in a manner to prevent relative movement. A finishing cover 18 of abrasive coated sheet material is secured, in a manner presently to be described, upon the periphery of the yieldable support 16. The yieldable support 16 is relatively thin with respect to the diameter of the core 14 and consists entirely of flannel wrapped in a plurality of layers directly upon the periphery of the hard core 14.

Upon each sideface of the body of the scouring wheel is secured a metal disk 20. The disks 20 are mounted upon the hub 10, each of the disks 20 abutting a shoulder 21 formed upon the ends of thehub 10 respectively, and the disks 20 are bolted together by a plurality of screw bolts 22 through the core 14, thus clamping the core 14 between them and binding together into a unitary structure the hub 10 and the core 14. The metal disks 20 thus serve to strengthen and to reinforce the core 14. The disks 20 are of such diameter that their rims 24 extend out- Wardly or radially beyond the periphery of the yieldable support 16 to such an extent, allowing for the thickness of the abrasive cover 18, that either of the rims 24 may serve conveniently as a guard to protect the upper of a shoe from the action of the abrasive cover 18. The use of the disks 20 in protecting the upper of a shoe is illustrated in Fig. 4, wherein is shown a portion of the scouring wheel in operation upon the side of a heel H attached to a shoe S. The rim 24 of either of the disks 20 may enter the crease between the heel H and the upper of the shoe S, thereby enabling an unskilled operator to avoid marring the upper. As shown in the drawing, the peripheral portions of the disks 20 are beveled to render the rims 24 relatively narrow, thereby facilitating their entry into the crease of the shoe S.

For securing the abrasive cover 18 upon the yieldable support 16, a double or T-shaped clamping hook 26 having a shank 28 is provided. The cross-bar or clamping portion of the hook 26 is herein shown as straight and at right angles to the shank 28 to accommodate a cylindrical scouring tool; but where the scouring tool has a periphery other than cylindrical, the cross-bar of the hook 26 will be shaped in accordance with the periphery of the scouring tool. The shank 28 of the hook 26 is threaded into a cylindrical carrier member or plunger 30 which fits loosely within a barrel 32 to permit free sliding and turning movement, i. e., free axial and rotary movement, of the plunger 30 within the barrel 32. The barrel 32 is secured to the body of the wheel,

being received within a cylindrical recess 34 in the core 14, and the inner end 36 of the barrel 32 being threaded into the hub 10. A slot or kerf 38 is formed across the outer end or" the barrel 32 to accommodate a screw driver for inserting and removing the barrel 32. A slot 40 is formed in the wall of the barrel 32 in a direction inclined to the direction of the axis of the barrel 32. A handle 42 consisting of a rod or bar is threaded at its inner end into the plunger and extends through the slot 42. A recess 44 in one side face of the core 14 and an opening 46 in one of the disks 20 and registering with the recess 44 affords access to the handle 42 and permits the operator to turn it about the axis of the barrel 32. The handle 42 engages the edges of the slot 40, and the latter functions as a cam, upon the turning of the handle 42, to move the handle 42, the plunger 30 and the hook 26 axially of the barrel 32. The axis of the barrel 32, and of the recess 34 within which the barrel 32 fits, intersects the periphery of the tool body and for convenience is made radial with respect thereto. The turning of the handle 42 in one direction will therefore retract the hook 26 to clamp the abrasive cover 18, while the turning of the handle 42 in the opposite direction will move the hook 26 outwardly to unclamp the abrasive cover. At

' each limit of its movement, corresponding, re-

spectively, to clamped and to unclamped positions of the hook 26, the handle 42 lies within the recess 44 and wholly beneath the outer surface of the disk 20, avoiding any undesirable possibilities which might result in having any member projecting from the body of the rapidly rotating wheel. A portion of one of the disks 20 is cut out, as indicated at 48, to compensate for the recesses 34 and 44 and the opening 46, thereby balancing the wheel.

" 1 receive the clip 50 and also the yieldable support 16 which is depressed into the recess beneath the clip 50, the entire clip 50, including its two uppermost edges, lying below the periphery of the adjacent undepressed portions of the yieldable support 16, or, in other Words, being countersunk into the yieldable support. The clip 50 is secured to the body of the wheel by a pair of screws 52 which extend through the yieldable support 16 into the core 14. A hole is formed in the center of the clip 50 to accommodate the shank 28 of the hook 26.

In the manufacture of the wheel, the hub 10, the core 14, the disks 20 and the barrel 32 are first assembled in the manner above described. The plunger 30, without the handle 42, is then inserted into the barrel 32, and the threaded end of the handle 42 is then inserted through the slot 40 and is tightly screwed into a threaded opening provided in the wall of the plunger 30. One end of the flannel support 16 is then tacked to the periphery of the core 14 and the support 16 is wrapped under moderate tension around the periphery of the core 14 until a layer of desired thickness has been obtained, the support 16 oocupying the full width of space between the inner surfaces of the disks 20 and covering the periphcry of the core 14. A support comprising about eight thicknesses of flannel has been found to give excellent results. More or less layers of flannel may be employed, however, to compen sate for variations in the thickness of the abrasive cover 18, so that the rims 24 of the disks 20 will extend sufiiciently beyond the periphery of the abrasive cover 18 to enter the crease of the shoe. The loose end of the support 16 is then temporarily tacked to the core 14. The clip 50 is then secured, as above described, in the groove provided for it in the core 14, depressing the flannel support 16 beneath it into the groove. The tack for temporarily securing the loose end of the support 16 is then removed, and the loose end cut off at the edge of the clip 50, which, together with the screws 52, retains the support 16 in posi tion. The shank 28 of the hook 26 is then inserted into the central hole of the clip 50, the support 16 having been punched through to permit the entry of the shank 28, and the threaded end of the shank 28 is screwed into the plunger 30.

The strip 18 of abrasive material is applied to the wheel by wrapping it about the periphery of the support 16, the ends of the abrasive strip 18 overlapping each other and being notched to accommodate the shank 28 of the hook 26, the adjacent portion of the shank 28 being flattened in a plane normal to the T bar of the hook 26 to enable the shank 28 to enter relatively narrow notches in the abrasive strip 18. The handle 42 is then turned to clamping position, thereby retracting the hook 26 while the operator holds the T bar of the hook 26 in position to enter the concavity of the clip 50 and to clamp both ends of the abrasive strip therein. The material of the abrasive strip 18 is supplied in various thicknesses, and to accommodate such variation in thickness, the hook 26 may be adjusted inwardly or outwardly with respect to the wheel, or axially with respect to the plunger 30, by reason of its threaded engagement with the latter. Such adjustment is effected by turning the hook 26 through one or more half turns in the desired direction. When the handle 42 is in clamping position, the T bar of the hook 26 lies substantially within the concavity of the clip 50 and wholly below the adjacent undepressed portions of the flannel support 16.

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

1. A rotary shoe finishing tool adapted to carry a finishing cover, comprising a tool body, movable means operable upon retraction with respect to said tool body to clamp the finishing cover upon said body and operable upon outward movement with respect to said body to unclamp the finishing cover, a carrier for said clamping means constructed and arranged for rotary movement about an axis which extends in the direction of operative movement of said clamping m ans, and a cam carried by said tool body, said cam and said carrier being constructed and arranged to move said extends in the direction of operative movement of said hook, and means carried by said tool body and constructed and arranged upon rotation of said carrier to move said carrier axially to operate said hook, said hook having a shank portion which engages the carrier to transmit the axial movement of the carrier to the hook but which is rotatable relatively to the carrier to enable the hook to be maintained in a desired angular position about the axis or" the carrier notwithstanding the rotation of the carrier about said axis.

3. A rotary shoe finishing tool adapted to carry a finishing cover, comprising a tool body, a hook operable upon retraction with respect to said tool body to clamp the finishing cover upon said body and operable upon outward movement with respect to said body to unclamp the finishing cover, a carrier for said hook constructed and arranged for rotary movement about an axis which extends in the direction of operative movement of said hook, and means carried by said tool body and constructed and arranged upon rotation of said carrier to move said carrier axially to operate said hook, said hook having a shank portion which is in threaded engagement with said carrier for relative rotation about the axis of said carrier whereby said hook may be adjusted inwardly and outwardly of said tool body and may also be maintained in a desired angular position about the axis of the carrier notwithstanding the rotation of the carrier about said axis.

4. A rotary shoe finishing tool adapted to carry a finishing cover, comprising a tool body, movable means operable upon retraction with respect to said body to clamp the finishing cover upon said body and operable upon outward movement with respect to said body to unclamp the finishing cover, and operating means for said clamping means comprising a barrel secured to said body and having an inclined cam slot in its wall, and a cylindrical member constructed and arranged for both turning and sliding within said barrel and having a handle extending through and engaging said cam slot, said clamping means being secured to said cylindrical member whereby said handle upon being turning in one direction will act upon said cam slot to retract said cylindrical member and said clamping means to cover clamping position, and upon being turned in the opposite direction will act upon said cam slot to move said member and said clamping means to unclamping position.

5. A rotary shoe scouring tool adapted to carry an abrasive cover, comprising a tool body, a barrel secured in said tool body and having its axis intersecting the periphery of said tool body, a cylindrical member within said barrel and both axially and rotatably movable with respect thereto, and a clamping hook for the abrasive cover having its shank secured to said member and extending axially with respect to said barrel and outwardly with respect to said tool body, said barrel having a cam slot formed in its wall in a direction inclined to the direction of the axis of said barrel, and said member having a handle extending through and engaging said cam slot whereby upon turning said handle in one direction said cam slot will cause said member to retract said hook to clamp the cover upon said tool body, and upon turning said handle in the opposite direction said cam slot will cause said member to extend said hook to unclamp the abrasive cover.

6. A rotary shoe scouring tool adapted to carry an abrasive cover, comprising a tool body, a hook having its shank extending inwardly with respect to said tool body, said hook being constructed and arranged upon retraction with respect to said body to clamp the abrasive cover thereto and upon reverse movement to unclamp the abrasive cover, a barrel secured within said tool body substantially in alinement with the shank of said hook, said barrel having an inclined cam slot formed in its wall, and a cylindrical member slidably and rotatably engaging the interior of said barrel and threadedly engaging the shank of said hook, said cylindrical member having a handle extending through and engaging said cam slot whereby, upon turning said handle in one direction said cam slot will cause said member to retract said hook to cover clamping position and upon turning said handle in the opposite direction said cam slot will cause said member to move said hook to unclamping position, said hook being adjustable inwardly and outwardly of said tool body to accommodate abrasive covers of various thicknesses by reason of its threaded connection to said cylindrical member.

7. A device for clamping an abrasive cover to a shoe scouring tool, comprising a barrel constructed and arranged to be secured to the tool body and having in its wall a cam slot inclined to the direction of the axis of said barrel, a cylindrical member slidably and rotatably engaging the interior of said barrel and having a handle extending through and engaging said cam slot, and a clamping hook for the abrasive cover having a threaded engagement with said cylindrical member, said clamping hook being movable axially of said barrel to clamping and unclamping position by the action of said inclined slot upon said handle when said handle is turned, and said clamping hook also being adjusted axially of said cylindrical member to accommodate abrasive covers of various thicknesses by reason of its threaded engagement with said cylindrical member.

8. A shoe scouring wheel adapted to carry an abrasive cover, comprising a hub, a core, a yieldable support mounted on the periphery of said core for carrying the abrasive cover, a T-shaped clamping hook for the abrasive cover, and a metal clip of concave cross-section disposed across the periphery of said wheel and secured to said core,

said clip being countersunk into said yieldable support and serving to receive the cross bar of said clamping hook within its concavity as a clamping abutment for said hook and serving also to retain said yieldable support upon said core.

WILLIAM A. REED.

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