US2990560A - Machines for roughing outsoles - Google Patents

Description

July 4, 1961 H. c. PAULSEN MACHINES FOR ROUGHING OUTSOLES u Me n rwm m mfi M wmm e 8 n6 37 3 B NW Filed Feb. 15, 1960 July 4, 1961 H. c. PAULSEN 2,990,560

MACHINES FOR ROUGHING OUTSOLES Filed Feb. 15, 1960 3 SheetsSheet 2 Egg.

July 4, 1961 I c, u s 2,990,560

MACHINES FOR ROUGI-IING OUTSOLES Filed Feb. 15. 1960 3 Sheets-Sheet 3 g a /ll,

United States PatentO 2,990,560 MACHINES FOR ROUGHING OUTSOLES Hans C. Paulsen, Lexington, Mass, assignor to United Shoe Machinery Corporation, Boston, Mass, 21 corporation of New Jersey Filed Feb. 15, 1960, Ser. No. 8,890

' 16 Claims. (Cl. 12-17) This invention relates to machines for roughing premolded rubber composition outsoles, which have unitation storm welts, to prepare them for attachment to the the upper face of the outsole along a substantial wide r band arranged just inwardly of the rib. Machines com monly used for roughing outsoles are not satisfactory for this purpose because the feeding mechanism, and/ or the roughing tools, of these machines tends to damage the storm welt and to interfere with the feeding and guiding of the outsole past the roughing tools respectively of said machines.

It is an object of the present invention to provide a machine which will quickly and elfectively prepare rubber composition outsoles, which have simulated storm With the above object welts, for attachment to shoes. and considerations in view applicant has provided, in a machine for roughing the upper face of a rubber composition outsole having a simulated storm welt which comprises an upstanding rib having an inner face, spaced gages adapted to be engaged by the edge of theoutsole, an end mill roughing tool rotatable about an axis and spaced from said gages, an abutment arranged between the roughing tool and the gages and adapted to be engaged by the inner face of the storm welt rib of the outsole engaged by the gages, and power driven feed members for gripping upper and lower faces of the outsole just inwardly of the rib for advancing the outsole lengthwise of its margin and for cooperating with the gages and the abutment in the maintaining respectively of an outer edge of the outsole and an inner face of the rib of the ontsole in engagement respectively with the gages and the abutment along dilferently curved portions of the margin of the outsole as the outsole moves lengthwise of its margin whereby to control the direction of feed of the outsole past the roughing tool, said tool being adapted to remove a band of material from the upper face of the outsole just inside the rib and to cooperate with the feed members in the moving of the outsole lengthwise of this margin past the gages and the abutment.

In accordance with another feature of the present invention the end mill roughing tool is yieldable lengthwise of its axis of rotation under pressure of the outsole against it and comprises a plurality of cutting blades which are arranged side by side and are mounted for pivotal movement about an axis disposed at right angles to and passing through the axis of rotation of the tool, said blades having roughing teeth or sharp cutting projections which face generally lengthwise of the axis of rotation of the tool and orient themselves to differently. shaped marginal portions of the upper face of the out-' sole just inside the rib and free themselves in the out sole to provide a fine velvety band surface on the outsole. 1

The present invention in the above features -and in novel features hereinafterdescribed, reference bewidth than the width 2 ing had to the accompanying drawings which illustrate embodiments of the invention selected for purposes of illustration, said invention being fully disclosed in the following description and claims.

In the drawings,

FIG. 1 is a side view, partly broken away, of the illustrative machine provided with one form of end mill roughing tool;

FIG. 2 is a front view, partly broken away, and partly in section of'an operating head portion of the illustrative machine;

FIG. 3 is a detail view, partly in vertical section, showing the illustrated machine in the process of roughing an imitation storm welt rubber composition outsole;

FIG. 4 is a view on the line IV-IV of FIG. 1 showing a storm welt rubber composition outsole in the procms of having its upper face roughened by the use of the illustrative machine;

FIG. 5 is a view similar to FIG. 3 but showing a modified type of roughing tool; 7

FIG. 6 shows in perspective a blade of a roughing tool generally similar to the roughing tool disclosed in FIG. 3 by having a bottom face which comprises pieces of Carboloy embedded in metal;

FIG. 7 shows in perspective an outsole which has been roughened by the use of the illustrative machine; and

FIG. 8 is a sectional view of'a portion of a shoe to which the outsole shown in FIG. 7 has been attached.

The illustrative machine is described with reference to removing material from the upper face 20 of a rubber composition outsole 22 to form on said outsole a roughened band 24 of outsole material located just inside an inner wall or face 26 of an upstanding rib 28 of a simulated storm welt portion 30 of the outsole. The contour of the inner wall 26 of the upstanding rib'28 substantially complemental to a feather line 32 (FIG. 8) of an overlasted portion 34a of an upper 34 of a shoe 36 to which the outsole 22 has been secured. A bottom face 34b of the overlasted portion 34a of the shoe upper 34 is roughened before having the outsole 22 attached to it. Preparatory to attaching the outsole 22 to the shoe *36 the roughened overlasted portion 34a of the shoe upper 34, as well as the roughened band 24 formed on the upper face 20 of the outsole, have cement applied to them, said cement being allowed to dry and being activated by heat when the outsole is attached to the shoe bottom by a suitable press (not shown).

The illustrative machine comprises an end mill roughing or cutting tool 38 (FIGS. 1, 2, 3 and 4) rotatable about a fixed vertical axis '40, an idler roll 42 which, together with a table 44, serves as a support for the outsole and over which the outsole is fed, front and back edge rolls or gages 46, '48 which are adapted to be engaged by an edge or an edge face 50' of the outsole 22, oppositely disposed upper and lower feed wheels 5-2, 54 which are adapted to grip'the outsole just inwardly of its upstanding rib 28 to feed the outsole lengthwise of its margin along differently curved portions with cross feed action past the end mill roughing tool 38 and against the edge rolls, and an abutment 56 which is formed integral with the upper feed wheel 52 and is arranged opposite the edge rolls and forms a gap 58 with the front edge roll and which is adapted to be engaged by the inner wall of the rib 28 to assist in the guiding of the outsole past the end mill roughing tool and to insure that the rib is protected from being engaged by the upper feed wheel. The gap 58 is of slightly greater of the imitation storm welt. The machine has a main frame 60 (FIG. 1) into which is threaded a pair of bearing screws 62 (only one of which is illustrated) and mounted on these screws-is 3 a tilt bracket 64. Adjustably secured for forward and rearward movement with the tilt bracket 64 by the use of screws 66 is an angle bar 68 into which is threaded a screw 70' having attached to it a coil spring 72, a forward end of which is attached to a screw 74 threaded into a plate 76 secured by screws 78 to the main frame, said plate having threaded into it a stop screw 80 against which the tilt bracket is normally urged (when the machine is idle) by the spring 72. The tilt bracket 64 has a forwardly projecting portion to which is adjustably secured by screws 82 a housing 84 for ball bearings 86.

Rotatably supported by the bearings 86 is a vertical spindle 88 into the lower end of which is threaded a holder 90 the upper end of the spindle having secured to it a pulley 92 operatively connected by a belt 94 to a pulley (not shown) secured to a shaft of a motor (not shown) adjustably secured to the main frame 60.

The holder 90 has at its lower end a beveled flange 90a and arranged between the spindle and a ledge of said flange is a sleeve 96, the construction and arrangement being such that the holder 90 is threaded into a threaded bore 91 of the spindle until prevented by the engagement of the opposite ends of the sleeve with the spindle and the ledge of the flange 90a of the holder, said holder being secured against displacement on the spindle by a'setscrew 98 (FIG. 1). Supported in bores of the holder 90 is a fulcrum pin 100 and mounted side by side in engagement with each other on the pin are a plurality of blades 102 which extend transversely of the axis of rotation 40 of the end mill roughing tool 38 beyond the flanges 90a of the holder and have sharp teeth or cutting projections 102a at their lower edges.

When the machine is idle the tilt bracket 64 is held against the stop screw 80 by the action of the spring 72, the bracket together with the roughing tool 38 being adapted, as will appear later, to swing counterclockwise as viewed in FIG. 1 as the work is pressed against the tool.

Secured by screws to the main frame 60 is a bearing housing 104 having journaled in it a shaft 106 to the forward end of which the upper feed wheel 52 is secured. Fixed to the shaft 106 are pinions 108, 110, the pinion 108 meshing with a pinion 112 pinned to a shaft 114 which is rotatably mounted in a bearing housing 116 tiltably supported on hearing screws 119 carried by bosses of the main frame 60 and the pinion 110 meshing with a pinion 117 secured to a drive shaft 118 rotatably mounted in a bearing sleeve of the main frame 60. The drive shaft 118 has connected to its rear end a pulley 120 operatively connected by a belt 122 to a motor (not shown) adjustably secured to the base of the machine. The shaft 114 has secured to its forward end the lower feed wheel 54. The tiltable bearing housing 116 is mounted upon the bearing screws 119 which have a common axis included in the median plane of the pinions 108, 112 and passing approximately through the point of tangeney of the pitch diameters of said pinions.

As will appear later the bearing housing 116 is tilted through a slight angle during the operation of the machine, the construction and arrangement being such that the pinion 112 tilts, together with the housing 116, during the operation of the machine about the axis of the bearing pins 119, the pinions 108, 112 maintaining their proper driving relation. The main frame 60 has secured to it by a screw and slot connection 124 an arm 126 into which a stop screw 128 is threaded. The tiltable housing 116 has a yoke shaped central portion 116a for receiving the pinion 112 and has a rear arm 116b. When the machine is at rest the rear arm of the tiltable bearing housing 116 engages the stop screw 128, said arm being constantly urged toward this screw by reason of the normal tendency of the bearing housing to rotate clockwise upon the bearing screws 119, as viewed in FIG. 1, under the action of gravity.

The rear arm 116b of the tiltable bearing housing 116 has a vertical bore 130 and extending through the bore is a rod 132 having a collar 134 secured to it, a spring 136 surrounding the rod and having its upper and lower ends respectively in engagement with a washer backed up by the collar 134 and a washer 138 which bears constantly against the upper face of the rear arm of the tiltable bearing housing. The lower end of the rod 132 is pivotally connected to an arm 140 of a sleeve 142 pinned to a shaft 144 journaled in the main frame 60, another arm 146 of said sleeve being pivotally connected to a vertical rod 148 operatively connected to a treadle (not shown).

The forward arm of the tiltable bearing housing 116 carries a pin 150 upon which is pivotally mounted an arm 152. Adjustably secured to the arm 152 by a slot and screw connection 154 is a lug 156 provided with a bearing for the idler roll 42. A depending portion of the table 44 has formed in it a rectilinear guideway 158 in which an upstanding portion of the lug 156 fits, a screw 160 passing through a bifurcated portion of the table being threaded into said lug for maintaining the table in different heightwise operating positions upon said lug. The arm 152 has threaded in its a stop screw 162 and the forward arm of the tiltable bearing bracket 116 has threaded into it a screw 164, a spring 166 being interposed between the arm 152 and a washer in engagement with a nut threaded onto the screw 164 and serving constantly to raise the arm to an idle position determined by the engagement of the stop screw 162 with the tiltable bearing housing 116. The roll 42 may be considered as part of the table 44 and the table and the roll may be referred to as a support.

The forward arm of the tiltable bearing bracket 116 has mounted on it a plate 168 into which is threaded a shoulder bearing screw 170 (FIG. 4) for the back edge roll or gage 48, said plate having a depending flange provided with a slot 172 (FIG. 1). The plate 168 may be secured upon the bearing housing 116 in different adjusted positions lengthwise of the shaft 114 by the use of a screw 174 which passes through the slot 172 and is threaded into the bearing housing. The front edge roll or gage 46 is rotatably mounted on a depending bearing portion of a lug 176 which has a slot 178, a screw 180 serving adjustably to secure the lug to the plate 168. With the above construction the gages or rolls 46, 48 may be adjusted into different operating positions as a unit toward and away from the end mill roughing tool 38 and the roll 46 may be adjusted into different operating positions with relation to the roll or gage 48.

The lower end portion of the blade holder 90 has formed in it a notch 184 (FIG. 3) for receiving the upper portions of the blades 102 which are arranged side by side and are pivoted upon the fulcrum pin 100 carried by the blade holder. The lower faces of the blades 102 are provided with the roughing teeth or projections 102a which may be described as facing or as facing and projecting lengthwise of the axis of rotation 40 of the tool. An axis 194 (FIG. 4) of the bearing pin 100 is disposed at right angles to and intersects the axis of rotation 40 of the spindle 88. Although four baldes 102 have been illustrated it is also contemplated to use a single blade in place of the four blades. A single blade such as above referred to may be described as having a lower or operating face which is disposed generally at right angles to the axis of rotation 40 of the tool 38 and through a central portion of which the axis extends, said face being composed of sharp cutting projections.

If desirable, roughing baldes 196 (FIG. 6) may be substituted for the blades 102. The blades 196 have operating or roughing faces 198 provided with Carboloy chips or roughing projections 198a which are embedded in a metallic material, for example. Although four blades 196 arranged side by side have been illustrated, it is contemplated to use a single wide blade in place of these four blades. A unitary blade such as above referred to may be described as having a lower or-operating face which is disposed at generally right angles to the axis of rotation 40 of the tool and through a central portion of which the axis extends, said face being composed of a multitude of hard sharp chipsor cutting projections facing and extending generally lengthwise of the axis of rotation of the tool. Another type of roughing tool 200 which may be used, if desirable, is illustrated in FIG. and is made of an abrasive material such, for example, as Carborundum, and has a frusto-conical inner and outer face and a lower scalloped roughing edge 20011. The roughing tool 200 may have secured to it a threaded shank 200a which is screwed into a threaded recess at the lower end of a modified spindle 88a.

In roughing the molded storm welt rubber composition outsole 22 the outsole is placed bottom down upon the table 44, then in a lowered position, with the edge 50 of the outsole adjacent to one end of the rib 28 of the storm welt '30 of the outsole in engagement with the rolls 46, 48. The operator then depresses the treadle (not shown) causing the rod 148 to be lowered and, through the mechanism above described, the forward arm of the tiltable bearing bracket 116 to be raised yieldingly through the spring 136, causing the portion of the upper or top face of the outsole 20 just inside or inwardly of the rib 28 to be forced against the upper feed Wheel 52 and also against the teeth 102a of the blades 102 of the roughing tool 38 which, as above explained, rotates counterclockwise, as viewed from above. When this occurs, the inner face or wall 26 of the rib 28 of the storm welt 30 of the outsole 22 engages the frusto-conical abutment 56 and the upper and lower feed wheels 52, 54 grip opposite sides of the outsole just inside the rib and feed the outsole over the table 44, the edge rolls 46, 48,. the abutment 56, and the feed wheels 52, 54 cooperating in the guiding of the outsole lengthwise of its margin over the table. The end mill roughing tool 38,, by reason of its counterclockwise movement, as viewed from above, tends to swing the edge face of the outsole 50 against the edge rolls 46, 48 and to assist in the feeding of the outsole.

The end mill roughing tool 38 may be described as being yieldable lengthwise of its axis 40 of rotation under pressure of the outsole 22 against it and said axis may be, said to be disposed at right angles to a work engaging face of the table 44 and to a general plane'of the outsole being roughened; The axis 40 of the roughing tool 38 may be described as being arranged parallel to axes of the edge rolls 46, 48 and as being ofiset rearw'ardly in the direction of feed of the work from an axis of rotation of the upper feed wheel.

The frusto-conical abutment 56, if desirable, may be formed separately from the feed wheel 52 and may be described as being centered about the axis of said upper feed Wheel 52 and as having a base portion thereof generally flush with the periphery of the upper feed wheel. The feed wheels 52, 54 may be described as being adapted to move the outsole 22 over the table 44 and past the roughing tool 38 in a path controlled by the edge gages 46, 48. The abutment 56 may also be described as being positioned between the roughing tool 38 and the edge gages 46, 48. I

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

1. In a machine for roughing the upper faceof a rubber composition outsole having a storm welt portion including an upstanding rib having an inner face, a support adapted to be engaged by a lower'face of the outsole, spaced gages adapted to be engaged by the edge of the outsole mounted on the support, an end mill roughing tool spaced from said gages and arranged in front ofthe l gages and overlying the support, an abutment located between the roughing tool and the gages and adapted to be engaged by the inner face of therib; of the-outsole mounted on the support and engaged by said gages, and power driven feed members for gripping opposite sides of the outsole just inwardly of the rib for advancing the outsole lengthwise of its margin and for cooperating with the support, the gages and the abutment in the maintaining respectively of the outer edge of the outsole and the inner face of the rib of the outsole in engagement with the gages and the abutment along differently curved portions of the margin of the outsole as the outsole moves lengthwise of its margin over the support whereby to control the direction of feed of the outsole past the tool, said tool being adapted to remove a band of material from the upper surface of the outsole just inside the rib and to cooperate with said feed members in the moving of the outsole lengthwise of its margin past the gages and the abutment.

2. In a machine for roughing the upper face of a rubber composition outsole having a storm welt portion including an upstanding rib having an inner face, a support for an insole, front and rear edge rolls adapted to be engaged by the edge of the outsole upon the support, an end mill roughing tool spaced from and arranged in front of said rolls and overlying the outsole on the support, an abutment located between the roughing tool and the edge rolls and adapted to be engaged by the inner face of the rib of the outsole engaged by said rolls, and power driven feed wheels for gripping opposite sides of the outsole just inwardly of said rib for advancing the outsole lengthwise of its margin and for cooperating with the gages and the abutment in the maintaining respectively of an outer edge of the outsole in engagement with the rolls and the inner face of the rib of the welt portion in engagement with the abutment along dilferently curved portions of the margin of the outsole as the outsole moves lengthwise of its margin whereby to control the direction of feed of the outsole past the tool, said tool being adapted to remove a band of material from the upper surface of the outsole just inside the rib and to cooperate with said feed members in the moving of the outsole lengthwise of its margin past the edge'rolls and the abutment.

3. In a machine for roughing the upper face of a rubber composition outsole having a storm welt portion including an upstanding rib having an inner face, a support adapted to be engaged by the bottom face of the outsole, front and rear edge rolls rotatable respectively about parallel axes and adapted to be engaged by an outer edge of the outsole, a driven upper feed wheel rotatable about an axis disposed at right angles to the axis of said rear edge roll and adapted to be engaged by the upper face of the outsole just inside the rib, an abutment arranged between the upper feed wheel and the rear edge roll and adapted to be engaged by the inner face of the welt portion of the rib of the outsole, an end mill roughing tool rotatable about an axis, said upper feed wheel and said abutment being positioned between the edge rolls and the tool, and the axis of the tool being arranged parallel to the axis of the feed rolls and being olfset at one side of and arranged rearwardly in the direction of feed of the work from the axis of rotation of the upper feed wheel, a lower feed wheel adapted to be engaged by the lower face of the outsole and arranged opposite the upper feed 'wheel, said upper and lower feed wheels being adapted to advance the outsole lengthwise of its marginal edge and to cooperate with the edge rolls and the abutment in maintaining respectively the outer edge of the outsole in engagement with the rolls and the inner face of the rib in engagement with said abutment along differently curved portions of the margin of the outsole as the outsole moves lengthwise of its margin whereby to control the feeding of the outsole pastvthe tool, said tool being adapted to remove a band of material from the upper surface of the outsole just inside the rib and to cooperate with the feed wheels in the moving of the outsole lengthwise of, its margin past the edge rolls and the abutment.

4. In a machine for roughing the upper face of a rubber composition outsole having an imitation storm welt portion including an upstanding rib having an inner face, a table which is adapted to support an outsole and to be engaged by the bottom face of said outsole, a first edge gage, an abutment which is spaced from and opposite said first gage and forms a gap with said gage, said first edge gage and said abutment being adapted to be engaged respectively by a leading portion of the outer edge of the outsole and an opposite portion of the inner face of the rib of the outsole, a second edge gage spaced from the first edge gage and adapted to be engaged by a trailing portion of the outer edge of the outsole, an end mill roughing tool rotatable about an axis, and upper and lower feed wheels rotatable respectively about axes and adapted to engage top and bottom faces of the outsole inwardly of the rib and to feed the outsole lengthwise of its margin and to cooperate with the gages and the abutment in the guiding of the outsole in a predetermined path to cause said tool to roughen the upper face of the outsole adjacent to and inwardly of said rib, said upper feed roll being positioned between the edge gages and the tool and the axis of rotation of the tool being disposed at right angles to the table and to the axis of the upper feed wheel and being positioned at one side and in advance of the axis of said upper feed wheel.

5. In a machine for roughing the upper face of a rubber composition outsole having an imitation storm welt including an upstanding rib having an inner face, a table adapted to be engaged by the bottom face of the outsole, gages adapted to be engaged by an edge of the outsole mounted on the table, an end mill roughing tool spaced from said gages and arranged over the table, upper and lower feed wheels rotatable about axes respectively and having peripheries, and a frusto conical abutment which is centered about the axis of the upper feed wheel and the base of which is arranged generally flush with the periphery of the upper feed wheel, said feed wheels being adapted to grip opposite sides of the outsole just inwardly of the rib for advancing the outsole lengthwise of its edge and said abutment being adapted to be engaged by the inner face of the rib and to cooperate with the gages in the guiding of the margin of the outsole lengthwise past the roughing tool.

6. In a machine for roughing the upper face of a rubber composition outsole having an imitation storm welt portion including an upstanding rib having an inner face, a support adapted to be engaged by the bottom face of the outsole, spaced guide rolls rotatable about axes and adapted to be engaged by an edge of the outsole on said support, an end mill roughing tool spaced from the guide rolls and rotatable about an axis disposed at right angles to the support, and abutment which is arranged opposite one of said guide rolls and which forms therewith a gap of slightly greater width than that of the storm welt portion of the outsole, and a pair of feed wheels adapted to grip the top and bottom faces of the outsole just within the rib for advancing the outsole guided by said support, said guide rolls and said abutment lengthwise of its margin past the tool to roughen a portion of the upper face of the outsole just within said upstanding rib.

7. In a machine for roughing outsoles, a support for an outsole, means for feeding said outsole over the support, an end mill roughing tool rotatable about an axis, and gages which are adapted to be engaged by an edge of the outsole fed over said support and which are adapted to cooperate with said means for causing the outsole to be moved lengthwise of its edge past said tool to effect the roughing of said outsole, said tool comprising a roughing blade which is freely tiltable about an axis disposed at right angles to the axis of rotation of the tool and which has teeth facing generally lengthwise of the axis of rotation of said tool.

8. In a machine for roughing outsoles, a support for an outsole, means for feeding said outsole over the support, an end mill roughing tool rotatable about an axis,

and gages which are adapted to be engaged by an edge of the outsole and are adapted to cooperate with said means for causing the outsole to be moved lengthwise of its edge past the tool to effect the roughing of said outsole, said tool comprising a plurality of roughing blades which are arranged side by side and are adapted to tilt freely independently of each other about an axis disposed at right angles to the axis of rotation of the tool, each of said blades having cutting teeth facing gen erally lengthwise of the axis of rotation of the tool.

9. In an outsole roughing machine, a support for an outsole, an end mill roughing tool rotatable about an axis, edge gages adapted to be engaged by an edge of the outsole upon the support, feed wheels for moving the outsole over the support and past the roughing tool in a path controlled by said gages, means for yieldingly moving the support generally lengthwise of said axis of rotation of the tool toward said tool for rendering the tool effective to roughen said outsole, and means for causing the roughing tool to yield lengthwise of its axis under pressure of the outsole against it.

10. In an outsole rouhing machine, a support having a face adapted to be engaged by the bottom face of an outsole, an end mill roughing tool rotatable about an axis disposed at right angles to said face of the support, edge gages adapted to be engaged by an edge of the outsole on the support, said tool comprising a plurality of roughing blades which are rotatable about said axis and are independently tiltable about an axis arranged at right angles to and passing through the axis of rotation of the tool, feed wheels for moving the outsole over the face of the support and past the roughing tool in a path controlled by said gages, means for yieldingly moving the support generally lengthwise of said axis of rotation of the tool and toward said tool for rendering the tool effective to roughen said outsole, and means for causing the roughing tool to yield lengthwise of its axis under the pressure of the outsole against it.

11. In an outsole roughing machine, a support for an outsole, an end mill roughing tool rotatable about an axis, a pair of edge gages, and means for feeding the outsole, over the support and past the tool in a path controlled by said edge gages, said tool comprising a plurality of cutting blades which rotate about said axis and are tiltable about an axis disposed at right angles and intersecting the axis of rotation of the tool and which face lengthwise of said axis of rotation.

12. -In a machine for roughing outsoles, a support adapted to be engaged by a bottom face of an outsole, an end mill roughing tool rotatable about an axis disposed at substantially right angles to the general plane of the outsole mounted upon the support, a lower feed wheel which is adapted to be engaged by the bottom face of the outsole on the support, an upper feed wheel adapted to be engaged by an upper face of the outsole upon the support, edge gages adapted to be engaged by the marginal edge of the outsole upon the support, and means for moving the support, the lower feed wheel and the edge gages toward the upper feed wheel and the roughing tool and lengthwise of the axis of rotation of said tool whereby to cause said wheels to feed the outsole lengthwise of its marginal edge past the roughing tool in a path controlled by said edge gages to roughen the upper face of the outsole, said support as it is moved toward the upper feed wheel being adapted to yield lengthwise of the axis of rotation of the tool with relation to the lower feed wheel and the edge gages, and said roughing tool being yieldable lengthwise of its axis under pressure of the outsole against it.

13. In a machine for roughing outsoles, a support for an outsole, means for feeding said outsole over the support, an end mill roughing tool rotatable about an axis, and means adapted to be engaged by an edge of the outsole fed over the support and to cooperate with said firstnamed means for causing the outsole to be moved lengthwise of its edge past said tool to effect the roughing of the outsole, said tool comprising a bar shaped roughing blade provided with an operating face which is dis posed generally at right angles to the axis of rotation of the tool and through the central portion of which said axis extends, said operating face being composed of sharp cutting projections which face and extend generally lengthwise of the axis of rotation of the tool.

14. In a machine for roughing outsoles, a support for an outsole, means for feeding said outsole over the sup port, an end mill roughing tool rotatable about an axis, and means adapted to be engaged by an edge of the outsole fed over the support by said first-named means and to cooperate with said first-named means to cause the outsole to be moved lengthwise of its edge past said tool to effect the roughing of said outsole, said tool comprising a roughing blade which has an operating face composed of a multitude of hard sharp cutting chips which face and project generally lengthwise of the axis of rotation of the tool.

15. In an outsole roughing machine, a support for an outsole, means for feeding said outsole over the support, an end mill roughing tool rotatable about an axis, and

means adapted to be engaged by an edge of the outsole fed over the support by said first-named means and to cooperate with said first-named means to cause the outsole to be moved lengthwise of its edge past the tool to efiect the roughing of the outsole, said tool comprising a roughing blade which is freely tiltable about an axis disposed generally at right angles to the axis of rotation of the tool and which has cutting portions projecting generally lengthwise of the axis of rotation of the tool.

16. In an outsole roughing machine, a support for an outsole, an end mill roughing tool rotatable about an axis, a pair of edge gages, means for feeding the outsole over the support and past the tool in a path controlled by said edge gages, said tool comprising a plurality of roughing blades which are arranged side by side and tilt about an axis disposed generally at right angles to and passing approximately through the axis of rotation of the tool, each of said blades having a plurality of cutting portions facing and projecting generally lengthwise of the axis of 20 rotation of the tool.

No references cited.

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