US1575763A - Sole trimming and polishing wheel - Google Patents

Description

March 9, 1926. 1,5757% F. G. HOOKE ET AL.

SOLE TRIMMING AND POLISHING WHEEL Filed July 29, 1925 Patented Mar. 9, 1926.

UN! T El.) S FATE E NT IQ E.-

FRED G. H' oOKE-AND JAMES J. FLYNN, or "IlowELL, Ma ma-memes.

s'oL'n TRIMMING AND POLISHING WHEEL.

Application filed July 29, 1925. Serial No. 46,745.

' To all whom it may concern:

"either rubber or a composition of rubber which is resilient, and of such consistency that while it can be easily cut it is difficult to make a finished edge.

It is generally cemented or vulcanized to the bottom of the shoe and not stitched.

In order that it shall be firmly'attached it is found necessary to use an intermediate sole of such composition that it canxbe stitched to the upper, and so that theouter sole can 'be cemented to it.

J To providea suitable finishedappearance,

the side of the outer'sole and the other soles must lie in the'same'lines, and it is desirable that-the bottom edge of the outer sole should be rounded.

On account of the great nuniberoflstyles,

and the number of sizes of shoes, it is necessary or customary to use a blank for the outer sole which is larger all around than the other soles, and than the finished size, and after this is attached by suitable cement or vulcanized, to trim off the excess at the outer edge, and then polish the edge so that it will conform to the size of the intermediate sole.

In finishing, it is necessary to avoid injury to the upper.

The present methods known as roughrounding, edge setting, and edge trimming, include the cutting off the excess by hand, and then filing or grinding down, after w 'ch a polish is put on by a wooden wheel.

Vith our invention, after the first rough trimming, or rough-rounding, the trimming and polishing are combined in one process in which the leather and the crepe sole are finished together.

To avoid injury to the upper, we prefer to use a separate roll for the heel which is generally thicker, but we round the edge ofthe heel on the wheel used for finishing the rest of the outer and the inner soles.

Our invention substantially is a trimming and polishing wheel which will polish the outer rim or side, and round, and polish the bottom edge quickly "and efiiciently, and which will also keep the material -clean.

We do tliissubstan'tially by covering a wooden roll with compact felt, in which is an annular groove, and by tightly gluing or cementing ,while wet, a strip of emery cloth, with the emeryon the inside, to'this felt. In this way a small {part of the emery works through the cloth, but there is very little fly, and it isgenerally kept clean.

"Besides this, there is'none of. the tendency. to bounce off such asthere is with a wooden roll. 1

In the drawings, Fig. 1 is a side'elevation of a shoe as it appears when the outer sole has been attached, but before it has been trimmed.

c Fig. 2:'is a-sectional view on the line 2-2 I of Fig. 1 as viewed from the right. p

:Fig. 3 is a plan view of a form of'inter mediate sole which we p'refer to use showing the false stitching, and with filling.

Fig. 4 is a plan of the toepart of a shoe with part of the edge of the outer sole cut off, but before 'it 'is trimmed.v I

Fig. 5 is a side elevation showing .our trimming and finishing wheel. w

vFig. 6 is a section thereof on line 66.

Fig. 7 is a 'zplan view of our trimming wheel witha shoe in ,positionas it is being trimmed and polished.

Fig. 8 is a front view of a stand with a heel trimming roller and a finishing roller on the same shaft.

Fig. 9 is a detail of our wheel.

In the drawings, F, represents the upper of a shoe, to which by means of what is known as McKay through and through stitching 10 is stitched an intermediate sole A which may be an imperforate. sheet of leather, or which preferably is of the skeleton type indicated in Fig. 3, so cut out at 20 as to form substantially a skeleton front part and shank, while the heel 22 is not cut out. This can be filled with composition 30 of a well known character.

An inner sole Hmay be used inside the shoe, or where a skeleton intermediate sole is used, it may be stitched in as shown in Fig. 2, at 10.

To this intermediate sole A, preferably by means of eemengand also attached thereto by the stitching 101s retaining sole B made of suitable fiber or leather; It should be of such material that a thin holding sole C of the crepe material can be firmly Vulcanized thereto.

The stitches 10 extend through the soles A, B and C.

The outer sole D of the crepe material may be formed with a low heel 12, and is attached by cement to the sole C. It may be vulcanized thereto.

lVhen this is done, a rim of the outer sole D projects as shown in Fig. 2, and this must be cut off by a hand knife or in any suitable way to be nearly even with the outer side of the soles A, B and C. To trim and polish the side of this outer sole D, we use a wheel M.

This wheel M may be formed on a metal core l0 to which is permanently attached the wooden section 4-1, and the section 42 is attached by means of a tightening screw 43.

Around the circumference, we cement a strip of thick, compact felt L, and out of this we cut an annular groove of right angular cross section 50.

e then take a strip of emery cloth P, on one side of which is the emery 53, and after wetting this we glue it with the emery side in, around the felt band L.

The ends of the emery cloth may be brought down in together between two wooden sections 41 and 42, which are then brought tightly together by means of screw 48.

When the emery cloth dries, it shrinks on to the Jeriphery of the wheel, and at the inside e ge of the annular groove will become rounded as shown between the vertical and horizontal walls and 54.

After the outer sole has been properly trimmed, the side of the composite sole is brought up against the wheel M in the manner shown in Fig. 9 so that the horizontal wall 7 4 of the emery cloth P will engage the edge of the sole while the rounded part between the horizontal wall 74 and vertical wall 75 will round off the outer bottom edge 17 as desired.

The glue in the emery cloth is usually sulficient to stick the cloth to the felt and the weave of the cloth is open enough to allow some of the emery to go through and more to gradually work through. The cloth being wrong side in, our wheel is very clean and does not soil the shoes.

lVe prefer to use a stand such as R in Fig. 8 with bearings 60, 60, for a shaft 61, driven by a pulley 62. One end of shaft 61 carries a wheel M and the other end a wheel S, with no groove in its curred face. lVheel S is of wood with a felt periphery covered with emery cloth 63 stuck to the felt face downward, and we use this for trimming and polishing the heel part which is thicker than the sole.

lVe claim:

1. In a shoe sole trimming and polishing wheel the combination with a cylindrical body; of a felt band attached to the periphery thereof, said felt band having an annular groove of substantially right angular cross section; and a strip of emery cloth having emery on the inner side, which is remented and shrunk on to the felt band.

2. In a shoe sole polishing wheel the combination with a cylindrical body; of a felt band attached to the periphery thereof; and a strip of emery cloth having emery on the inner side, which is cement-ed and shrunk on to the felt band.

FRED G. HOOKE. JAMES J. FLYNN.

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