US1994469A - Machine for treating shoe parts - Google Patents

Description

March 19, 1935. G. GODDU MACHINE FOR TREATING SHOE PARTS Filed May 16, 1935 Patented Mar. 19, 1935 UNITED STATES MACHINE FOR TREATING SHOE PARTS George Goddu, deceased, late of Winchester,

Mass, by Isabelle W. Goddu, executrix, 'Winchester, Mass assignor to United Shoe Machinery Corporati ration of New Jersey on, Paterson, N. J., a corpo Application May 16, 1933, Serial No.-671, 377

'16 Claims.

This invention relates to improvements in machines for surface treating shoe parts, as by roughing, to prepare them, for example, for the reception of adhesive for securing them to other shoe parts, and to improvements intools for use in such machines. The invention is herein illustrated as especially adapted for roughing the overlasted margins of shoe uppers preparatory to coating them with cement for attaching outsoles thereto.

Satisfactory roughing of the overlasted' mar gins of shoe uppers has been accomplished by the use of rotary roughing brushes having radially disposed wire bristles. In the use of roughing tools of this type as heretofore generallyemployed, however, diificulty has often been experienced in roughing the upper margins of shoes having steep shank portions for accommodating high heels because of the inability of the tool-to operate properly upon the steep shank portions of the shoes. Moreover, roughing brushes of the type referred to wear out'quickly and consequent? 1y have to be frequently replaced.

In view of the foregoing, one object of the present invention is to provide an improved tool for surface treating shoe parts and'particularly the overlasted margins of shoe uppers which will be especially adapted to operate upon steep shank portions of shoe bottoms where the surface to be acted upon has a short radius of longitudinal curvature, and which will be capable ofoperating effectively for a'much longer period of time than has heretofore been practicable.

In the roughing tool herein illustrated a multitude oflong wire bristles are arranged in a plurality of groups extending axially within a holder adapted to be secured upon a rotary shaft, the several groups of bristles being closeto and equidistant from the axis of the holder and projecting beyond one end thereof for engagement with the work. As shown, the projecting ends of the bristles are ground orotherwise shaped so that rotation of the tool will generate aconical surface of revolution of small outside-diameter and of such form as to insure a substantial area of contact of the bristles with the work even in the shank portions of shoe bottoms where the longitudinal slope or curve is unusuallysteep. More over, the illustrated holder comprises a member which is adjustable lengthwise of the shaft to which it is secured so that the bristles maybe fed forwardly to compensatefor wear at their operative extremities. Inasmuch as thev illustrated bristles are of substantial length many such adjustmentsmay be made before it is necessary to replace the toolwith a new tool.

The improved roughing tool is herein shown as embodied in a machine provided with a driven rotary shaft upon which the tool is mounted, and which is inclined at a substantial angle to the horizontalto enable the operator to have-a better view of the portion of the work which is being acted upon'by the tool, a work rest or gage which is so positioned in front of the operative extremity of the tool as to serve as a steady rest for the work and to facilitate the presentment of the work to the tool and'to insure better control of the roughing operation by the operator. The illustrated work rest is so positioned and shaped as to support the work in one position for presentmerit to the 'tool when the tool is being rotated in one direction and to support the work in an- .other direction for presentment to the tool when the tool is being rotated in the opposite direction. Theillustrated machine is further provided with a dust hoodshaped to enclose all but the operative portion of the tool and to provide formost effectively receiving the dust caused by the roughing operation. Further features of the present invention are concerned with the work rest or gage to. a is The invention will be explainnedwith reference to the accompanying "drawing, in which Fig. 1 is a view partially in side elevation and partially in section of an improved machine for roughing the overlastedmargins of shoe uppers;

Fig. 2 is a front elevational view of 'the roughing tool and work gage shown in Fig. 1;

Fig. 3 is a sectional view taken along the line III--III of Fig; 2;

'- Fig. 4 is a front or end elevational view of a modified form of roughing tool; and r Fig. 5 is-a detail sectional view illustrating a further modification in the construction of the roughing tool.

Referring tothe drawing, the illustrated machine comprises a head 10 having bearings 12 and 14 for a shaft 16; [The head 10 is secured to the top of a pedestal 18 in such a position as ,to support the shaft 16 at an angle hereinshownas approximately 25 to the horizontal. The shaft, 16 is held against endwise'displacement in its bearings by means of a collar 20 which is fixed to the shaft in position to engage the inner end of the bearing 12 and a pulley 22 which is fixed to the shaft in a position adjacentto the outer end of the bear-.

and. dust hood above referred V and over an idler pulley 26 is adapted to be connected with a suitable source of power for the purpose of driving the shaft 16. The shaft 16 extends forwardly and downwardly beyond the bearing 14 to receive a roughing tool such as the tool 30. V s

As herein shown, the roughing tool 30, which is in the nature of a brush, comprises a 'multiplicity of long wire bristles or strands which are arranged side-by-side in a plurality of groups or units 32 which are firmly secured at their rear extremities within circumferentially spaced sockets 34 (Fig. 3) in a holder or hub 36 which is fixedly secured to the shaft 16 by means of a set screw 38. The several groups of bristles ex- 1 tend forwardly from the holder 36 in directions substantially parallel to the shaft 16 and the forward portions of the bristles extend through and are supported within circumferentially spaced circular apertures 42 in a collar 44 which is fixedly secured to the front extremity-of the shaft 16. The forward portion of theshaft is split, as shown at 46, and is also axially bored and tapped to receive a conical screw 48 by means of which the split portion of the shaft is radially expandedgto clamp the collar 44 to the shaft. The groups of bristles 32 extend forwardly a slight distance beyond the collar 44 and are ground or otherwise shaped, as best shown in Fig. ,3, so that, as the tool rotates, the ends of the wire bristles will generate a frustoe conical surface of revolution or, in other words, an annular surface like an outwardly beveled and of a thick-walled tube. As shown, the outer lateral face of the collar 44 is of a frustoconical contour corresponding to the frusto conical surface of revolution generated by the operative extremities of the bristles, this construction insuring that all. the bristles in each group will project a uniform distance beyond the supporting collar 44 and thus will be adapted to operate in a uniform manner upon the work. The portions of the bristles which extend between the hub 36 and the collar 44 are enclosed' and protected by a cylindricaL-shell or housing 50 which fits over and is supported by the peripheries ,of the hub and the collar and which is fixedly secured at its rear end to a collar 52 which is secured by a set screw 54 to the shaft 16 so that the shell 50 will rotatewith the shaft and with the groups of bristles 32. As shown, the shell 50 is provided with two elongated slots 56 which extend lengthwise of the shell at diametrically. opposite sides thereof and one or the other of which is adapted to be alined with the set screw 38 in the-holderv 36, thereby rendering the set screw accessible for manipulation so that the holder 36, together with the groups of bristles 32, may be adjusted lengthwise of the shaft 16, as will hereinafter be described.

The roughing tool 30 is enclosed laterally with-' in a dust hood 58 formed of sheet metal and having riveted to its upper side a supporting bar 60 the rear of which is bent upwardly and bolted to an upward extension 62 of a casting 64'which is secured to the head 10. The casting 64, which is apertured to permit the passage of the shaft 16 therethrough, 'fits closely around the shaft and is formed with an outer circular flange 66 which fits tightly within the rear end of the sheet metal hood 58. The sides of the hood 58 are located close to the tool 30 at the top and sides ofthe latter but the'lower portion of the hood is spaced a substantial distance from the tool and away the dust produced by the tool. An elon gated slot 70in the upper portion of the 'dust' hood extends in a direction parallel to the axis of the shaft 16 to render the set screw 38 in the holder 36aocessible from the outside of theme.- chine. V

Asshown, a v work rest and gage 72 is provided for assisting in holding the work and presenting it properly to the action of the roughing tool 30.. Thegage '72 isin the form of an angle bar the upper arm of whichis secured by means of screws 74 to the bar 60 on the dust hood. The screws 74 extend through a slot 76 in the work gage which provides for adjustment of the work.

gage toward, and from the operative extremity of the roughing tool. The lower arm of thework gage '72 extends diametricallyacross the front.

end of the roughing tool, the outer surface of the gage armbeing rounded, as-best shown in Fig.

3,; to facilitate the manual feeding of v the workpast the gage and to insure against any possibility. of damaging the workr vThe forward portions of the wire bristles constituting the roughingtoolinstead of extending through circumferentially spaced aperturesin a holder, such as the collar 52 already described,

may be spread; apart so as to occupy practically the entire space between the shell 50 and the outer periphery of a collar or holder of modified construction such, for example, as the collar shown at "78 in Fig. 4.- In order to pre vent lateral displacement of the bristles as-a result of their engagement with thework the .collar' .78

may be provided, as herein shown, with a series of radial ribs 80 which serve to receivethe lateral thrust of the bristles. As indicated in Fig.

5 the bristles or if desired the forward portions only of the bristles, may be embedded-'inand 13 eraly supported by rubber or other yielding material 82 whichis adapted to be worn away with the bristles by engagement with the work. 1 v

In theuse of the above-described roughing machine a shoe, the'overlasted upper margins of which are to be roughened, is held by thev oper-.

ator in both hands in a substantially horizontal. position with the bottom of the shoepbe'aring against the steady rest and gage 72,: the shoe being tilted transversely, if necessary, to present the overlasted margin of the upper at theupper-- most sideof the shoe, to the action of the tool 30. If the tool is being rotated ina clock; wise direction, viewed from the front of the Inachine, the work is positioned so thatit is presented to the lower righthand portion of the tool. If the tool is being rotated-in a counter clockwise direction, viewed from the front of the, machine, the work willbe positioned so that it' will engage the lowerleft-hand portion of the tool. In either case the roughingbristles'will move inwardly from'the outer extremity of the overlasted upper margin and they will 'traveleach in a curved path which is or may be subj-f stantialy perpendicular to the edge of the shoe bottom where it first engages the work' butwhich extends in a direction substantially V or more nearly lengthwise of the upper margin as it ap-" proaches the inner edge thereof. Thus'tlie direction of movementof the bristles along the inner extremity of the upper margin. is such that they will have little, if any, tendency to pull out any lasting staples which-may be used for securing the upper margins to the insole. Moreover, because of thecurvatures of the scratches or furrowsproduced in the upper-margins by the bristles, adjacent furrows'will intersect such a manner as to produce a roughened-sur face of a character which will insure the obtaining of a satisfactory'bond between the" cement and the upper material. The frusto-conical form of the work-engaging portion of the tool and its axial angular positionare suchthat the work, when properly presented to the tool, will be so positioned that the operator will'be able' conveniently to observe that portion of the work which is being acted upon and thus to control accurately the operation of the tool and the location of the outer boundary: of the'roughened area so as to insure that no roughing action shall take place upon any portien of' the upper 'which is to be exposed to view in the finished shoe: The

form of the tool is further such that it will have a. substantial area of contact withthe Work and will operate effectively, even in steep orabruptly curved shank portions,- without danger of bridging across the curve in a manner tending to lessen the eflectiveness of its operation.

After the projecting portions of the bristles have become worn too short for effective action upon work they may be fed'forwardly within the tubular housing 50 to restore the desired amount of projectionand thus renderthetool capable of again operating with maximum eificiency. The action of the tool may also be regulated by longitudinal adjustment of the bristles, for example, a gentler and more sensitive action may be obtained by increasing the extent of projection of the bristles and thereby rendering them more flexible. Because of the length of the bristles within the housing a great many adjustments may be made, the tool functioning after each adjustment with the same effectiveness as a new tool. After the bristles have been entirely worn away the old holder 36 may be removed and a new holder with a new set of bristles may be substituted therefor. Adjustment and removal or insertion of the holder may be readily accomplished by merely loosening the set screw 38 by means of a screw driver inserted through the slot 70 in the dust hood.

Having described the invention, what is claimed as new-and desired to secure by Letters Patent of the United States is:

1. A rotary roughing brush having its bristles extending in directions substantially parallel to its rotational axis and having the work-engaging ends of the bristles arranged to generate a frusto-conical surface of revolution, said bristles being embedded in yielding material for supporting them against lateral thrust resulting from operation of the bristles upon the work.

2; A rotary roughing brush comprising a holder adapted to be adjustably secured upon a rotary shaft, a plurality of groups of bristles extending in directions substantially parallel to the rotational axis of the brush and secured at one end to said holder, and means adapted to be secured to the shaft for supporting the opposite end portions of said groups of bristles andmaintaining them in circumferentially spaced relation.

3. A rotary roughing tool of tubular form shaped to generate an annular surface of revolution, and a housing for the tool arranged to expose only one end portion of the tool for engagement with the work, the tool and the housing being relatively adjustable to compensate for wear of the tool.

4. A rotary roughing tool of tubular form shaped to generate an annular surface-of'revolution, and a housing for the tool arranged to expose only one end portion of the tool forengagement with the work, the tool being adjustablerelatively to the housing to compensate for wear'of the toolf YR -5. Atool for roughing shoe parts comprising a rotary roughing element of elongated tubular form having an operative portion shaped to generate an annular surface of revolution, and a housing for said roughing element arranged to e-Xposeonly theoperative portion of the element,

said element and said housing being relatively adjustableto compensatefor wear of said element.' j a 1 6. A rotary roughing brush having its bristles extending indirections substantially parallel to the rotational axis of the brush, and a tubular housing for the brush, the brush and the housing being relatively adjustable to compensate for wear of the brush. a

'7. A tool for roughing shoe parts comprising a rotary brushof cylindrical formhaving its bristles extending in directions substantially parallel to the axis of the brush, and a tubular housing arranged to expose only the operative extremities of the "bristles," the bristles being adjustable lengthwise relatively to the housing to compen sate for wear.

8. A tool for roughing shoe parts comprising a rotary brush of cylindricalform having its bristles extending in directions substantially parallel to the axis of the brush, a tubular housing arranged 10. A tool for roughing shoe parts comprising a rotary brush of tubular form having its bristles extending in directions substantially parallel to the axis of the brush and arranged to generate an annular surface of revolution, and-a housing for said brush constructed and arranged to provide lateral support for the bristles and to expose only the operative extremities thereof for engagement with the work, said bristles being adjustable lengthwise relatively to said housing to compensate for wear.

11. A tool for roughing shoe parts comprising a rotary brush of tubular form having its bristles extending in directions substantially parallel to the axis of the brush and arranged to generate an annular surface of revolution, a housing for said brush constructed and arranged to provide lateral support for the bristles and to expose only the operative extremities thereof for engagement with the work, and means for adjusting said bristles lengthwise of said housing to compensate for.

wear of said bristles.

12. A machine for roughing shoe parts comprising, in combination, a driven shaft, a multiplicity of elongatedroughi'ng strands extending lengthwise of said shaft and arranged-in the form of a tube surrounding the shaft, said strands having operative end portions projecting beyond said shaft for engagement with the work and opposite end portions secured to said shaft, a tubular housing secured to said shaft in coaxial relation therewith arranged to prevent outward lateral displacement of said strands, and means for adjusting said strands lengthwiserelatively to said shaft and housing to compensate for wear of the strands. r

13. A roughing machine comprising, in combination, a driven-shaft, a roughing brush having a hub secured to said shaft, a multiplicity of bristles surrounding the shaft and extending lengthwise thereof with their free extremities projecting beyond the shaft for engagement with the work, means for preventing outward lateral displacement of said bristles, and means for adjusting the bristles lengthwise relatively to the shaft to compensate for wear of the bristles.

14. A machine for roughing shoe parts ,comprising, in combination, a driven shaft, a plurality of groups of wire bristles surrounding said shaft in circumferential spaced relation, said bristles extending lengthwiseof the shaft and being secured at one end to the shaft, the 0pposite ends of said bristles extending beyond the shaft for engagement with the work, means for spacing apart said groups of bristles and sup porting their operative end portions against lateral displacement, and v a gage for, determining the angle of presentmentof a shoe part to'saidf bristles.

15. A machine for 'roughingshoe parts coinprising, in combination, a driven shaft, a: rough-. ing brush comprising a'multiplicity of bristles surrounding said shaft, said bristles extending lengthwise of the shaft and being securedat one end to the shaft and the opposite ends' of saidbristles extending beyond the, shaft for engage-,

ment with the work, and a steadyrest comprising a bar extending diametrically across the workengaging end of said brush for determining the angle of presentment of a shoe part tosaidy bristles.

' 16. A machine for roughing shoe partscom prising, in combination, adriven shaft, a multiplicity of elongated-roughing strands extending tubular housingsecured to said shaft in coaxial relation therewith arranged to prevent outward. lateral displacement of said strands, and a dusthoo'd surrounding said housing and spaced therefrom to provide anannularentrance opening ad- 7 I jacent to'the operative portions of said roughing strands for receiving dust.-

. ISABELLE-W. q0DDU,- J

Executrz'x of the Will of George Goddu, Deceased.

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