US2128768A - Roughing machine - Google Patents

Description

' Aug. 30, 1938. N. v. DYx-:R

ROUGHING MACHINE Filed Aprjil 9, 1934 This invention Vrel Patented ug. 30, 1938 noUQHfNGI MACHINE Newell V. Dyer, Brockton, Mass., assigner `to Y United yShoe Machinery Corporation, Paterson,

a corporation of-New Jersey applicati@ Aprile, 1934, serial No. 719,635

V8 Claims. (Cl. -51-1-10) ates to abrading machines and'isjherein illustrated as embodied ina machine for roughing the margins of thin pieces of leather which are used for linings of bootsand shoes. f

`In the manufactureof cementflasted shoes, the ,overlasted margin of the lining is attached to ,the insole bycement; and it is desirable to rough the margin ofia leather lining before cement is applied thereto so `as to Aensure a Vfirm bond betweenfthe overlasted margin of such a lining and the insole. Such a lining is commonly'made of thin, very exible leather having a glaze on that fface which will contact with the foot of the wearer -in the flnishedshoe; land the roughing operation issufcient to remove vthis glaze from a narrow marginal portion of the lining and thereby expose ,a slightly roughened surface to the action of the cement. v 1 l Because of the nature of thematerial to be i operated upon this `roughing operation isa'rather v delicateone which has hitherto been performed by hand, the general object of the present invenution being to provide a machine by whichthis op- .,.eration may be quickly and accurately carried out.

`According to the present invention, the work is engaged on both sides and fed past a rotary abrasivedisk. In the illustrated machine the work is engaged on the under side by a feed roll and on the upper side lby a feed disk .and a presser and fed past a rotaryvabrasive disk carried at the lower end of a rotary shaft, the construction being such that the operative portion of the abrasive disk sweeps over the `work from the body `portion of the work outwardly to the edge thereof.

' Thesev and other features of the invention will `be described as embodied in an illustrated machine and pointed out in the appended claims.

Referring now to the accompanying drawing,

Fig. 1 is a front elevation of a portion of a machine in which thel present invention isembodied;

Fig. 2 is a section on the line II-II of Fig. 1, showing a vamp lining in process of being operated upon; and

Fig. 3` isa detail ,i of Fig. 2.

Certain parts of the machine are or may be the same as those of the skiving machine disclosed in United States Letters Patent No. 823,578, granted June 19, 1906, upon an application filed in the name of Charles H. Bayley, and these parts will be briefly described, reference being made to the patent for details of construcnsection on the line lII--III outer lend a fee ical portion at its inner portion at its outerA end. cylindrical portion isf a f .sea

Ayielding presser 2| Awith an edge guide 23, the construction of this vdisclosed in the patent to be described. VA ro shape of the presser chine is or may be th .the patent, referenc details including the driving mechanism not' herein Shown.

' corresponds to` th rigid supporting disk `the three disks firmly to tion. A horizontal rotary shaft 5 has fast to its d roll I which has a frusto-conend and a cylindrical Cooperating with the eed diskil mounted at 5 the lower end of an `upwardly extending rotary shaft I I which is normally held down in the position shown by afcoiled spring I3 but may yield upward, said shaft beingrotated through a spiral r I5 fast to the upper end of the shaft I Iwhich meshes with a spiral gear I1 on a rotary shaft I9. The margin of the work is held down upon the frusto-conical portion of the feed roll 1 by a vwith its edge in engagement being the same as that referred to above except ythat the presser iscut away at 2| on a curve to correspondto the curved` edge of ra disk 33 later tary shaft 25,'inclined, as V2'I fast toits upper end which presser and edge guide shown, has a pulley f is rotated by a belt 29 running in the direction shown, said shaft being rotatably and slidably vmounted in a. sleeve 5 3 which is adjustably held in two brackets 49, 5I. As thus far described, ex-

cept for the shape of the enlargement at the end of the shaft and except for the referred to above, the mae same as that disclosed in patent for lower Y ebeing made to the 30 The machine of the patent is a skiving machine', and to the lower end of the shaft which e inclined shaft 25 there is fastened a knife. In the present machine there is fastened to the lower end of the shaft 25 a Y 33, a flexible cushioning. disk 35, and a flexible abrasive disk 31. A headed screvv 39, which is threaded into the enlarged` lower end of theshaft 25 and a washer 4I, clamp the lower end of the shaft and to each other. The margin on the lower face of the rigid disk 33 is beveled at 43, asbest shown in Fig. 3, so that the outer margins l ofthe flexible disks 35, 3l may be bent upward by" pressure against theworkvfl. In order to cause the abrasive disk 31 to engage the work yieldingly,

be provided to supplement the weight of the shaft,

said spring being located between the enlarged lower end of the shaft 25 and the under side of the bracket 49. In either case, when the shaft is raised by insertion of a piece of work in the machine, the work-engaging marginal portion of the abrasive disk is held yieldingly against the Work.

With the construction which has been described above it will be noted that the thin and somewhat flimsy piece of work is engaged both on its upper and lower faces by the members which feed it, that by reason of the edge guide it may be guided accurately through the machine, .and that theV portion of the abrasive disk which is effective at any given moment to abrade the margin of the piece is moving in a direction from the body por-4 tion of the work toward the edge thereof. The

cushioning disk, which may be made of leather or may be merely an abrasive disk which has been more or less worn, and the beveling of the margin of the rigid supporting disk 33 render the machineparticularly effective to remove the glaze from light, flimsy material without damaging said material since the action of the abrasive disk is rendered less harsh when either or both of these features are present; but it should be understood that, if desired, the bevel may be omitted from the margin of the rigid disk 33 and the abrasive disk clamped directly to the rigid disk.

Although the invention has been set forth as embodied in a particular machine, 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 I claim as new and desire to secure by Letters Patent of the United States is:

1.,A machine for roughing the margin of a piece of sheet material having, in combination, means including a feed roll and a feed disk for feeding the work, an edge guide, a rotary abrasive disk arranged to engage the work and progressively abrade the margin thereof, said abrasive 'disk being bodily movable toward .and from the feed roll, and a stop for limiting its movement toward the roll.

2. A machine for roughing the margin of a piece of sheet material having, in combination,

means including a feed roll and va feed disk for feeding the work, an edge guide and presser for guiding the work and pressing it against the feed roll, a rotary abrasive disk arranged to engage the work .and progressively abrade the margin thereof, said abrasive disk being bodily movable toward and from the feed roll, and a stop for limiting its movement toward the roll.

3. A machine for roughing the margin of a piece of flexible sheet material having, in combination, a rotary feed roll over which the work is fed, an edge guide, a yielding presser, a rotary abrasive tool extending over the feed roll in proximity to the presser, a rotary member engaging the upper face of the work, said abrasive tool being mounted for bodily movement toward and from the feed roll, and a stop for limiting its movement toward the roll while permitting it to be moved away from the roll by engagement with the work.

4. A machine for roughing the margin of a Dieceof flexible sheet material having, in combination, a rotary feed roll over which the work is fed, an edge guide, a .yielding presser, a rotary abrasive disk havin-g its forward operative portion extending over the feed roll into proximity vto the presser, a rotary member engaging the upper face of the work, said abrasive disk being mounted for bodily movement toward and from the feed roll, and a stop for limiting its movement toward the roll while permitting it to be moved away from Vthe roll by engagement with the work.

' 5. A machine for roughing the margin of a piece of flexible sheet material having, in combination, a rotary feed roll, a yielding presser for holding the piece against the roll, an edge guide for engaging the edge of the work, a feed disk cooperating with the roll to feed the piece, a rotary abrasive disk arranged to engage the work and progressively abrade the margin thereof, said abrasive disk being movable toward and from the feed roll, a spring for urging the abrasive disk toward the feed roll, and a'stop for limiting said last-named movement.

6. VA machine for roughing the margin of a piece of flexible sheet material having, in combination, a rotary feed roll, a yielding presser for holding the piece against the roll, an edge guide for engaging the edge of the work, a feed disk cooperating witth the roll to feed the piece, a rotary abrasive disk arranged to engage the work and progressively abrade the margin thereof, said abrasive disk being movable toward and from the feed roll, a spring for urging the abrasive disk toward the feed roll, and .a stop for limiting said last-named movement, said stop being adjustable to provide for pieces of work of different thick- IleSSeS.

movable toward and from the feed roll. means cooperating with the feed roll for feeding the work, an edge guide for engaging the edge of the Work and guiding it so that the margin thereof is operated upon by the disk, a spring for urging the disk toward the feed roll, and a stop for limiting the extent of this movement.

8. A machine for roughing the margin of a piece of limp leather having, in combination, a

rotary feed roll over which the work is fed, a yielding presser, a rotary abrasive disk having its forward operative portion extending over the feed roll into proximity to the presser, said disk being movable toward .and from the feed roll, means cooperating with the feed roll for feeding the work, an edge guide for engaging theedge of the work and guiding it so that the margin thereof is operated upon by the disk, a spring for urging the disk toward the feed roll, and a stop for limiting the extent of this movement, said stop being adjustable to provide for diiferent thicknesses of work.

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