US732814A - Machine for scouring heels. - Google Patents

Description

1 PATENTED JULY 7, 190's. W. BrARNOLD; momma FOR scotmme HEELS. 5 ,mmmomm1.11.1901.

UNITED STATES Patented m *7, 1903.

-ATEi\ T OFF CE.

MACHINE FOR SCOURING HEELS.

SPECIFICATION forming part of Letters Patent N 0. 732,814, dated July '7, 1903. Application filed April 11 1901. Serial No. 55,361. (No model.)

Machines for Scouring Heels, of which the fol:

lowing description, in connection with the accompanying drawings, is a specification,

like letters on the drawings representing like parts.

Considerable expense, time, and labor are at present consumed in the necessary operation of preparing leather heels for the finishing operation, this being usually done by scouring them on sandpaper buffing-Wheels.

My invention comprises in its general embodiment a series of flexible abrading-disks of sandpaper of large area, which, although individually very flexible and frail, are used in considerable. numbers superimposed directly upon each other and secured at their center only, being entirely unrestrained at all other points and free to stand more or less apart excepting at the center.

One object of my invention is to prevent as far as possible the-rapid wearing out or.

tearing of the sandpaper, or, in other words, to lengthen its lifeand jefficiency while obtaining a quick and rapid "abrading-surface,

and I have found. that by employing a hum-, ber of sheets of sandpaper mounted as above 1 explained on a shaft at one sideor support- I ing-face of a back or disk the active sheet will stand out firmly and stronglywith much less liability to tear thanif used singly, so that when a top lift of a heel is pressed against' the same the nails or the like therein may be pressed firmly againstthe face of the sandpaper without materially disturbing its path of rotation and without tearing it, the sandpaper at the point of pressure yielding inwardly slightly, but resuming at once its'circular path of rotation upon passing the nail or other article pressed against it, the body of slightly-separated and rapidly-revolving sheets of-sandpaper before mentioned providing a resilient cushion and permitting the abrading-sheet to yield under the pressure of thework and yet supporting the same and reinforcing the natural tendency of the sandpaper to maintain its path of rotation, whereas when used alone a single sheet of sandpaper would in special cushion-like backings.

be disturbed in its 'rotative movement and actually torn or destroyed under the same pressure.

The constructional details and further advantages of my invention will be pointed out in the course of the following description,

reference being bad to the accompanying drawings, illustrative of one form of my invention, and the latter will be more particularly defined in the appended claims, also forming a part of this specification.

In the drawings, Figure lshows my invention in front elevation. Fig. 2 is a vertical sectional view thereof, taken on the line 2 2, Fig. 1. Fig. 3 is a horizontal sectional view taken on the line 3, Fig. 2.

It will be understood that my invention may be mounted and operated by any convenient means, being herein shown as mounted on a stand (1., having a bearing a. at its up per end in which is journaled a shaft 19, driven by a high-speed pulley 19, secured thereto at one side of the bearing, while at the other side of the bearing is a disk 0, having a shoulder or flange c for holding an operating member 12 of the clamping device. On the face of the disk 0 is preferably mounted a felt pad 0 and in front of this are the sheets of sandpaper c, it being usual to secure a large number of sheets in place atthe start and remove them one by one as they becomeworn.

his not new to use sandpaperfor scouring heels; but as heretofore used in rotary{scourers it has been used a singlesheet at a time,

being pressed directly on the smooth and usually hard carrying-surface, so that when in use the heel, and especially the nails thereof, have been shoved against the sandpaper, the latter has worn away rapidly, and ac c'ordingly various inventions have been made I have found, however, that I can get all the cushion required and-can produce a yielding and yet durable and permanent abrading-surface simply by securing a plurality'of sheets at their center to a highspeed disk. .The high speed of rotation of the wheel. or disk will maintain the sheets of sandpaper perfectly flat and sufficiently stiff to endure theheavy pressure brought upon them'in scou ring heels and shoe-bottoms, the several sheets: of sandpaper being free and unrestrained excepting at their center, whereby they may separate sufficiently to give a superior cushioning effect, permittingthe sandpaper surface to conform instantly to the changing surface of the heels while scouring the leather and nails thereof down smooth and even. Not only is the scouring effect rendered extremely sensitive and rapid, thereby permitting a large number-of heels to be done in agiven length of time, but the life of the sandpaper is increased, as it does not wear away so rapidly when it can give slightly. When a sheet becomes smooth, the operator simply catches the sheet at its edge and tears it off instantly, without any manipulation of the clamp, and if a ragged edge should project slightly from the center it is of little importance, as the area at the center is necessarily small.

Any kind of suitable clamp may be employed; but I prefer to use the form herein shown, which consists of a washer or circular clamping-plate 0 having a hole at one side of the center to fit over the securing button or head 0 of the clamping-bolt, and a neck a to slip down over the neck a of said bolt behind said head, as will be clearly understood viewing Fig. l in connection with Fig. 2. The bolt is provided with an elongated opening 0 in which an eccentric hub c from the operating member 0 rests, there being preferably a spring 0 clamped behind the clamping-bolt in a recess provided axially of the shaft '1) for normally maintaining the bolt under a tendency to move out- Wardly to the dotted-line posit-ion, Fig. 3.

I am aware that it is not new to provide a central clamp for clamping a plurality of parts together, and I am also aware that this has been done in buffing-wheels in which the peripheral edge of the wheel constitutes the buffing-surface, said wheels being made of such material as sheets of leather and cloth, and therefore I wish it clearly understood that I do not in any sense intend to claim such construction; but rather my invention resides in the discovery that by employing a central clamp for a plurality of disk-face scouringsheets for shoe bottoms and heels and leaving claim as new, and desire to secure by Letters Patent, is

1. A machine for scouring heels and shoebottoms, comprising a stand, a shaft, a disk mounted on said shaft, a plurality of sheets of sandpaper secured on one face of said disk, a single clamping device for said sheets, said clamping device being located at the center of said disk, and the sheets extending without constraint from said clamping device to their extremeperipheral edges, and means for rotating said disk and sheets at high speed.

2. A machine for securing heels and shoebottonis, comprising a stand, a shaft, a disk mounted on said shaft, a plurality of sheets of sandpaper secured on one face of said'disk, a single clamping device for said sheets, said clamping device being located at the center of said disk, and the sheets extending Without constraint from said clamping device to their extreme peripheral edges, and means for rotating said disk and sheets at high speed, said clamping device consisting of a bolt held axiallyin the end of said shaft, and provided with a quick-acting operating member for moving it in and out, and at its outer end having a removable Washer or clamping-plate. 4

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM B. ARNOLD.

Witnesses:

GEO. H. MAXW'ELL, GEO. W. GREGORY.

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