US2270399A - Roughing machine - Google Patents

Description

E. E. WINKLEY RoUn'ING MACHINE Jan. 20, 1942;

Filed Feb. 5 1940 2 Sh eets-Sheet l Jan. 20, 1942.- E. E. WINKLEY Romaine MACHINE Filed Feb. 5, '1940 2 Sheets-Sheet 2 Fig.4

Patented Jan. 20, 1942 i BJOUGIHNG MACHINE;

Erastus. E. Winkley, Lynn, Mass, assignor to United: Shoe Machinery Corporation, Borough of Flemington, N: J., a corporation of New Jersey Application February 5, 1940,.Serial No. 817,290

(or. ee -1 Claims;

This invention relates to; roughing machines and will. be. described herein: as embodiedin a machine. for" toughening; the-woverlasted margin of the upper of a lastedzshoein. order to prepare ityfor the reception: of cement. The invention, however, is..notlimitedainzallits aspects to embodiment. in-anupper roughing machine, certain features thereof being. readily adaptable to roughing machines used for other purposes such, for example, ,asrougheningoutsolesor other shoe parts.

When roughening the overlasted margin of a shoe upper, it is desirablethata uniformly thin layer of material be removed from the-surface of the work and experience has'taught that this operation is most satisfactorily performed with a rotary tool such aswa-.wire:b rush.. Inasmuch? as there: are: usually radial. pleats and: wrinkles. in the; overlastedmargin: of the; upper; it is necessary; in order toinsuretreatment of. all ofthe exposed surfaces, that. the direction of action of the.- tool be. transverse to the overlastedmargin of theshoe upper,; from the outer. edge of the shoe bottom. inward.

In order to avoidtheformation of a-substantial concavity'orv trough in the roughened band or stripe witha brush-which rotatesand cutscrosswise of theband, it is'customary to use abrush of rather large diameter since the. greater the diameter of the brush. the less'the" amount of convexity in its face in a segment of a given width. Large brushes are expensive. and their accommodation in a machine. sometimes imposes inconvenient limitations upon the machine design.

It is anobject of the present inventionto provide a. compactly; designed roughingv machine in which can be used. arotary roughing. tool of relatively small. diameter,, which tool,. however,

operates in a path that approaches a straight line as closely as would the. operative, face of a tool of, a diameter so greatvas to exceed practical limits,

With the above stated'object in view, a feature of .the invention consists in thecombination, with a rotary roughingtool and driving means for rotating said tool, of means for oscillatingsaid' tool bodily while it is. rotating. In. the illustrated machine, the tool. is rotated" at a substantially constant. speed. and. is1'simult'aneously. oscillated bodily at. alower. speed" about an axis outsidev of the; tool itselfflthe oscillatory movement of'the toolbeing in the same. direction as the movement of its periphery resulting, from the. continuous rotation aboutits own axis. movement is. preferably obtained" by journaling the toolat the free end. of a swinging arm of substantial; length and continually oscillating the arm about a; fixed" pivot while the tool rotates. Theresult. of. this is. that. the cutting face of the This. compound tool. at. the place where: it acts upon the. work moveslin. a nearly, flat arc, theradiusof-which is the distance-fromthe peripheryof the toollto the; pivot about which. the arm oscillates, and this radius can have any desired: magnitude within reason.

A further feature of the inventionv is to be recognized. in the. combination. with the above described roughing tool. of a shoe support positioned to'sustain alasted shoe withtheoverlasted margin of its upper disposed across the path of action of the tool. Theshoe. support preferably comprises a roll mounted belowthe level of the roughing tool with means for rotatingthe roll about a horizontal axis perpendicularto-the axis of rotation ofthetool and means for raising and lowering the roll at will to cause the shoe to be presented properly to the tool asthe-roughing operation progresses around the margin. of the shoe bottom.

These and other advantageous features. ofth invention, including a. novel structure for retaining the roughing toolupon itssupportbut permitting itsinstantaneous removal therefrom, will be better understood and appreciated upon readingthe following detailed description of amachine embodying the invention in connection withthe accompanying drawingsin which.

Fig. 1 is a side elevation with parts of. the housing removed. to revealv the operating mechanism;

Fig. 2 is a'front elevation;

Fig. 3 is a plan view of thatpart ofthemechanism which imparts combined rotary, and oscillatory movement to the roughing tool; and

Fig. 4is asectional view of thetooL.

Referring tothe drawings, lllindicates ahousing of which parts.v are removed to reveal the mechanism therein. Power is. transmitted. from a. motor l2 by a belt [4 to theroughing tool. rotating mechanism, and by a belt. I6. to a pulley l8 aifixed to a. shaft 20. from which. are derived the rotary motionot the work'supportingroll and the oscillatory movement of, the roughing tool.

The roughing tool, as illustrated, consistsof a wire brush 22 rotatably sustained upon astud 24 secured inthe outer end of an arm-26, which is pivotally mounted upon a shaft 28-, about the axis of which the armcan oscillate. Afiixed'to the shaft 28 is a pulley 30 aroundwhich thebelt l4 passes and by which the shaft 28 is rotated. Also affixed to the shaft 28 is a pulley connected by a belt to a pulley 36 bywhich the roughing brush is rotated. Thus, whenthe motor I2 is running, the roughing brush will be rotated continuously by power transmitted through the belts I4, 34. r

The mounting of the tool-carrying arm 26 1mm? prises a sleeve 38 which isloose upon their shaft 28 and to which the-arm 26 is-se'cured. Thelarm;

as shown, is made in two sections connected together by bolts st, passing through slots $2 in one of the sections, to provide for adjustment of the length of the arm in order to obtain the proper tension in the belt 34.

Projecting rearward from the sleeve 33 i an arm 44 having a longitudinal hole in which a rod 46 is slidable. The outer ende of the rod 46 carries an eccentric strap it which surrounds an eccentric i] fixed upon the shaft 28 When the motor i2 is running, this shaft 28 which is driven by the belt it also rotates continuously and, consequently, the eccentric 56 will cause continual oscillation of the sleeve 33 and up and down movement of the tool-supporting arm 26. The radius of the arc, in which the operative portion of the roughing brush 22 oscillates, is equal to the distance between the center of the shaft 28 and the point where the brush engages the shoe. It will be apparent from an inspection of Fig. 1 that the effect will be the same as if a brush rotating about a fixed axis and having that large a radius were being used.

In order to facilitate the proper presentation of the shoe to the roughing brush, a large, work supporting roll 52 is provided. This roll is carried by a shaft 54 journaled in a housing 56, the rear portion of which is formed to enclose a worm gear 58 secured to the shaft E l. The worm gear 58 meshes with a worm 6b fixed upon the shaft and the housing 55 carries bearings which are supported by and freely rotatable upon the said shaft so that the housing, together with the worm iii;

gear 58 and the shaft 54 contained therein, can

swing about the axis of the shaft 253. The purpose of this arrangement is to permit the roll 52 to be raised or lowered at will while the machine is running, in order thatt he shoe may be presented accurately to the roughing brush. The housing 55 is connected by a rod 62 to a treadle 64, which is normally elevated by a spring 68 to sustain the work-supporting roll 52 in the position shown in full lines in Fig. 1. By depressing the treadle, the roll may be lowered to the position indicated by dotted lines or to any intermediate position.

In order to predetermine the upper and lower limits of movement of the roll 52, upper and lower adjustable stops 63, Til are provided. These stops are mounted in a slot 72 in a stationary guide 'Mbetween which and a similar parallel stationaryguide 16 a suitably formed portion it of the housing 56 is vertically movable.

The structure and mounting of the roughing brush 22 are best illustrated in Figs. 3 and 4. .The active elements of the brush consist of the usual wire bristles arranged in the form of an annulus and secured in a ring which is pushed upon a sleeve 82 having a flange 84 for confining the bristles at one side of th brush. A rubber washer 86 is pressed against the other side of the brush by a metallic washer 88 engaged by a nut 90 threaded upon the end of the sleeve 82.

The'pulley 36 has a hollow hub 92 upon which the sleeve 82 has an easy, sliding fit, and a pin 9-4 projecting from the side of the pulley enters .a holein the fiange 845 to prevent relative rotation of the brush and th pulley. The brush,

although it is positively driven by the pulley 36,

is entirely unsecured and can be instantly removed from the hub of the pulley without the use of tools.

Inorderto retain the roughing brush in operativeposition upon the pulley hub 92, there is provided, for closing an opening in the side of the. housing Iii, a closure member 95 which is hinged to the rest of thehousing at 93. An abutment disk lilil is adjustably secured in the closure member 96 and is arranged to engage the end of the sleeve 32 when the member 96 is in closed position, as illustrated in Figs. 2 and 3, thus retaining the roughing tool and its pulley upon the stud 24., The upper hinge portion of the closure member 96 has a square corner I02 (Fig. 3) against one or the other of the two sides of which bears a spring pressed pin W4 serving to retain the closure member in either closed or open position but permitting said member to be moved instantly from one position to the other. This construction permits the roughing tool to be removed for sharpening or replacement by merely opening the closure member 95 and picking the unsecured tool off its support.

In order to aid the operator in controlling the presentation of the shoe to the roughing tool, there is provided a gage Elli, the shank portion tilt of which is slidably mounted in a portion iii) of the housing I!) and threaded for the reception of an adjusting nut H2 by means of which the position of the gage may be varied as desired. A set screw l M serves to clamp the gage rigidly in adjusted position.

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

1. In a shoe roughing machine, the combination of a rotary roughing tool, driving means for rotating said tool, means for oscillating said tool bodily in a plane at right angle to its axis of rotation while it is rotating, and a shoe support so positioned relatively to the tool that a lasted shoe may be sustained upon said support with the overlasted margin of the shoe upper properly presented to the action of the roughing tool.

2. In a roughing machine, the combination of a rotary roughing tool; driving means for rotating said tool, a shoe support positioned to sustain a lasted shoe with the overlasted margin of it u per disposed across the path of action of the tool, and means for oscillating the tool bodily across said overlasted margin.

3. In a shoe roughing machine, the combination of a rotary roughing tool, driving means for rotating said tool about a horizontal axis, a shoe supporting roll mounted below the level of the roughing tool and offset horizontally from the axis thereof a distance approximately equal to the radius of the tool, and means for rotating said r011 about a horizontal axis perpendicular to the axis of rotation of the tool.

4. In a shoe roughing machine, the combination of a rotary roughing tool, driving means for rotating said tool, a shoe supporting roll mounted below the level of the roughing tool and ofiset horizontally from the axis thereof a distance approximately equal to th radius of the tool, power means for rotating said roll about a horizontal axis, and means for raising and lowering said roll at will during operation of the tool and roll..

5. In a roughing machine, the combination of a housing having an opening therein, a stud within the housing near said opening, a pulley having a hub rotatably sustained on the stud, an unsecured roughing tool sustained on said hub, and a movable closure member for said opening adapted to engage and retain the tool upon the hub when said member is in position to close the opening. v 1

' ERASTUS E. WINKLEY.

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