US1444873A - Heel-breast-scouring machine - Google Patents

Description

Feb. 13, 1923. I 1,444,873..

\ E. GRUSH.

HEEL BREAST scoumNG MACHINE.

HLED DEC.I2.V1917.

www 70 Patented Feb. 13, 1923.

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ELI/IER B. GRUSH, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEv MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF- NEW JERSEY.

HEEL-BREAST-SCOURING MACHINE.

Application filed Decemberk 12, 1917. Serial No. 206,774.

T0 @ZZ culi-0m t muy concern.'

Be it known that I, Emmi: B. GRUsi-r, a citizen of the United States, residing` at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Heel-Bfeast-Securing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to abrading machines and is herein illustrated as embodied in a machine for scouring the breasts of heels of boots and shoes.

Ordinarily a. rotary wheel of frusto-coni.- cal shape is used for performing this operation. lVith high-heeled shoes, however, the difficulty arises that it is impractical or impossible to scour that portion of the breast of the heel which is adjacent to the shank of the sole by reason of the fact that the edge of the scouring wheel remote from the heel is liable to strike the shank of the sole thereby either preventing the edge of the scouring' wheel from operating upon the breast close to the shank or disfiguring the shank or producing both of these undesirable results.

In order to overcome this diliiculty as well as to provide an improved machine for general use, one feature of thel present invention comprises, in a machine of the class described, 'a frusto conical scouring tool open at the small end to receive the forepart of av shoe and having an outer abrasive surface with ar concave edge to conform substantially to the shank of the shoe and means for operating said tool. Conveniently the scouring tool is in the form of a hollow frustum of al cone having a thin wall and adapted to permit the forepart of the shoe to Abe thrust through the small end of the frustum so that the breast of the heel may readily be scoured up to its junction with the shank.

It is desirable that the work be protected from the abrading tool and from the dust genera-tedv by the abrading operation and another feature of the invention comprises a fixed hollou7 guard to enclose part of the work and a rotary tool surrounding the guard for operating on the u nenclosed part of the` work. )onveniently the tool is enclosed by a blower casing except' for an yopening to permit present-ation of the heel of the longitudinal section, showing a machine in which the present invention is embodied, a shoe being illustrated in position yto have' the breast of its heel scoured;

Fig. 2 is al front elevation of the machine p and the shoe;

Fig. 3 is a section in detail on the same plane as the section in F ig..1 showing a por-4 tion ofthe scouring tool .and a portion of the shoe, the latter' being shown in full lines Fig. 4L is an elevation ofa part ofthe scouring tool; y

Figp is a. section Fig. 3, and

Fig. 6 is a section on the line 6 6v of Fig. 3. f y' f The casing 7 of the blower by which the dust is removed is formed in two parts hinged together at 9 and held inthe lposition shown by a spring latch 11 which is fastened by screws 13 to the immovable section of the casing and engages a pinv 15 on the movable or swinging section. "This movable section is provided with an openingy 17, to expose a port-ion of the scouring tool and has projecting from it into the axial space or chamber which is surrounded. by the fan blades or vanes 19 of the blower a hollow guard or shield 21 to receive the forepart of the shoe and thereby to protect it from the `dust generated by the scouringv or abrading operation. This shield serves anotherimportant purpose in that it guards against lia.-

on the line 5-5 of bility of vinjury by the vanes to that portion of the shoe which necessarily enters said axial chamber. `The outer ends of the vanes 19 are connected by an annular holder 23 having a countersunk portion to receive the ring-shaped base. of the'frusto-conical'scouring tool, said tool comprising acountersunk portion 25, a felt pad27 `(located inthe countersink and an abrasive cover 20. A clamping ring 3l carried by bolts 33 which are threaded into the holder 23 is adapted to grip the abrasive cover and hold it t'irmly in place. Fig. d shows certain of these parts on a. larger scale and illustrates hcw the ends of the cover overlap.

Referring to Fig. 5, it will be noted that the radius of curvature of conical face of the scouring tool is less than that of the breast of the heel, this proportion of parts being provided since a single tool is in practice used to scour heels the breasts of which have different radii of curvature. rlurning now to Figo, it will be seen that the radius of curvature of the edge of the opening in the smaller end of the truste-conical scouring tool is greater than that of the transverse curvature of the .shank of the sole, this proportion ofparts being provided. in order that the localities at the base of the breast of the heel adjacent the corners thereof may be properly scoured. rl`his relation of the curvature of the face of the tool and of the opening in the smaller end of the tool to the curvature of the breast of the heel and that of the shank of the sole respectively is important since it makes possible the scouring of the Whole breast of the heel and at the *same time greatly facilitates t-he scouring operation. To scour the breast, the operator merely presents the breast to the tool, as shown inllig. l, and then rocks the shoe slightly, first on an axis substantially perpendicular to the shank of the shoe, and then on an aXis substantially perpendicular to the breast of the heel, thereby presenting every part of the breast to the tool.

Although, as stated above, a single tool is used to scour heels the breasts of which have different radii of curvature, it becomes necessary to remove the tool and replace it by one of different shape when heels are encountered the breasts of which differ greatly in curvature. It has been explained above that the screw-bolts 33 act upon the clamping ring 31 to hold the abrasive cover in place. It should now be noted that these screw-bolts serve also to hold the tool in place and provide ready means for making use of a plurality of interchangeable tools.

The direction of rotation of a scouring tool is indicated by the arrow in Fig. 2; and in order to aid the operator in holding the shoe firmly in place With its breast in contact With the abrading face of the scouring tool,`a rest 35 is provided, said rest h aving a stem which passes through a perforated lug 37 on the blower casing and is held in adjusted position by means of a thumb screw 39. This rest has a curved operative face to permit sidewise rocking of the shoe in a path substantially perpendicular to the breast of the heel, as has been described above.

ln the operation of the machine the vanes with the tool attached are rotated in any suitable manner, as for example by means of the tight and loose pulleys 41, 43. The shoe is presented to the operating tool in the manner illustrated in F ig. l and is rocked slightly first on an axis perpendicular to the shank of the shoe (this movement being perlnitted by the proportion of parts Which is illustrated in Fig. and second on an axis which is perpendicular to the breast of the heel (this movement being permitted by the proportion of parts Which is illustrated in Fig. 6). ln this Way the Whole surface of the bre-ast of the heel is thoroughly scoured. lt will be noted that because of the peculiar shape of the scouring tool there is no difficulty in scouring the breast of 'the heel close to the shank of the sole, since there is nothing to strike the shank of the sole and thereby disfigure the shank or interfere With the operation of the tool. lt will be understood, of course, that the guard 21 is so shaped as not to touch the shoe during the scouring operation, that is, its shape is such as to present no obstacle to the manipulation of the shoe for the purpose of bringing the breast of the heel into proper position against the abrading sur-v face of the tool. At the saine time, the guard serves to prevent contact of the shoe With the revolving fan vanes at all times, Whether the shoe heel is being presented to the tool for operation or is being removed. T he current of air dravvn through the opening 17 passes out through the pipe l5 carrying the dust with it.

Although the invention has been set forth as embodied in a particular machine, v.it should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

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

l. A machine of the class described, having in combination, a frusto-eonical scouring tool open at the small end to receive the forepart of a shoe and having an outer abrasive surface With a concave edge eX- tending entirely to the edge of the opening to conform substantially to the shank of the shoe, and means for operating` .said tool.

2. A machine for scouring the breast of the heel of a shoe, having in combination, a hollow conical abrasive member having a free and unobstructed space in its center adapted to receive the forepart of the shoe With the heel breast against the abrasive surface of the conical member, a 'rotary shaft, and means mounted on the shaft and engaging the larger end of the cone to support it.

3. In a machine of the class described, a blower casing having a central hollow shield to protect the forepart of a shoe, fan vanes rotatable around the shield, and a hollow tool secured to the fan vanes and having a portion projecting through an opening in the casing.

4f. In a machine of the class described, a blower casing, an annular series of fan vanes rotatable near the periphery of the casing to leave an unobstructed central space to receive a portion of the work, and a hollow7 tool secured to the fan blades and having a portion projecting through an opening in the casing.

5. A machine of the class described, having, in combina-tion a hollow abrading tool for operating upon a part of a piece of work, means for operating said tool, and means located within the hollow tool J)tor protecting the remaining part of the work from the dus-t generated by the abrading operation.

6. A machine of the class described, havg, in combination, a hollow abrading tool through which the orepart of the shoe may be inserted, a hollow dust guard extending into the tool and in which the orepart of the shoe is held during the scouring operation, and means for operating said tool.

7. A heel breast scouring tool comprising a hollow frusto-conical, cover-supporting portion, a ring-shaped base ast to the larger end of the rusto-conical portion, an abrasive cover.I means co-operating vwith said base for fastening said cover in place, and rotary means tast to the base to support and rotate the tool.

8. A heel breast scouring tool in the form of a frustum of a hollow cone open at both ends, the construction being such that the 'orepart of a shoe may be thrust through the rustum from the smaller end to present the breast of the heel oi the shoe to the tool, the conical abrasive surface extending to the edge of the opening at the smaller end of the frustum.

9. A heel breast scouring tool comprising an annular, frusto-conical member open at both ends the radius of curvature of the f conical face thereof being less than that of.

the breast of the heel and the radius of curvature of the edge of the opening in the Vsmaller end of the frustum being greater than that of the transverse curvature of the shank of the sole of the shoe to which the z heel is attached.

10. A machine of the class described having, in combination, an annular holder open at both ends to receive part of the work, a hollow frusto-conical member, an abrasive cover for said member, and a common means for fastening the cover to the member and the member to the holder.

lL'A heel breast scouring tool compris` ing a rigid member hollow and open at both ends to provide space to permit the forepart of a shoe to be thrust through it and having a thin wall to permit scouring of the breast of a heel close -to the shank of the sole of a shoe, a removable abrasive cover for said tool, means for fastening the cover in place, and means for rotating the tool.

12. In a machine of the class described, a

blower casing having a central hollow shield ELMER B. lGnusn.

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