US2004070A - Heel breasting machine - Google Patents

Description

June 4, 1935. N. L. GULLIFORD 2,004,070

l A HEEL BREASTING MACHINE Original Filed May 25, 1931 5 Sheets-Sheet l /ea Iig-. 15

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June 4, 1935. l v N 1 GULUFORD 2,004,070

HEEL QSREASTING MACHINE Original Filed May 25, 1931 5 sheets-sheet 2 June 4,

N. L. GULLIFORD HEEL BREASTING MACHINE Original Filed May 25, 1931 5 Sheets-Sheet 5 y VM., fw

5 Sheets-Sheet `4 N. L. GULLIFORD HEEL BREASTING' MACHINE Griginal Filed May 25, 1931 /fle June 4, 1935.

June 4, 1935.

r-N. L.. GULLIFORD HEEL BREASTING MACHINE original Filed May 25, 1931 5 sheets-sheet `5 ai H4 Patented June 4, 1935 HEEL BREASTING MACHINE Nicholas L. Gulliford, deceased, late of Peabody, Mass., by Archibald T. Gulliford, administrator,

Lynn, Mass., assigner to Gulliford Wood Heel Company, a rm composed of Archibald T.

Gulliford and Pearce Lynn, Mass.

H. Gulliford, both of Application May 25, 1931, Serial No. 539,884

21 Claims.

This invention aims to provide a simple automatic heel grooving machine and in the accompanying drawings there is shown merely for illustrative purposes one embodiment of the invention, wherein:

Fig. 1 is a plan view of an improved heel block grooving machine constructed in accordance with this invention;

Fig. 2 is a perspective view of the heel blank;

Fig. 3 is a perspective view of a heel block after the heel breast-ing operation has been completed;

Fig. 4 is a section partly in elevation taken on the line 4 4 of Fig. 1;

Fig. 5 is a detail section on the line 5--5 ofY Fig. 4;

Fig. 6 is a diagrammatic view of the work and cutter blade, a portion of said cutter blade being shown in full lines in one operative position relatively to the work and in dotted lines in a different adjusted position relatively to said work;

Fig. 7 is a detail elevation of the work clamping device viewed in the direction of the arrow a, Fig. 1;

Fig. 8 is a detail view of the work clamping de- A vice shown in Fig. 7 and advanced one step from that shown in said gure; Y

Fig. 9 is a detail view similar to Fig. 8 but with the work clamping device `shown released;

Fig. 10 is a detail section on line Illl0 of Fig. 8;

Fig. 11 is a detail plan section taken on line II-II ofFig.8;

Fig. 12 is a detail sectional elevation taken on line I2-I2 of Fig. 1;

Fig. 13 is a plan section on line l3-I3 of Fig. 12;

Fig. 14 is a detail view partly in section showing the chain tightener; l l

Fig. 15 is a detail section on line l5-'I5 of Fig. 1;

Fig. 16 is a detail view of the means for adjusting the ring for carrying the clamping members;

Fig. 17 is a detail section on line Il-l 1 of Fig. 1; and

Fig. 18 is a detail plan view of the gauge for automatically positioning the heel blocks radially on the work carrier. a

In the particular embodiment of the invention selected for purposes of illustration and shown in the drawings, there is shown a continuously revolving work carrier consisting, for example, oi a ring 2 having an inside diameter of appropriate size to correspond in curvature with that required for the heel breast. This carrier 2 is rotatably supported by an annularktable 4 suitably face at 8 (see Figs. 4 and 15) to receive correspondingly curved flanges I0 constituting annular guides for guiding said ring 2 and members l0 during the feeding and shaping of the work. The ring 2 is hollowed out at 3 to contain a ring gear I2 carried by the ring Il), said ring gear having gear teeth i4 formed upon its inner face to mesh herein with the teeth I6 of a spur pinion I8 housed interiorly of the combined table 4 andl carrier ring 2 (see Fig. 1);. Y

A shaft 29 secured to rotate with the spur pinion i8 is preferably journaled to rotate in a bracket 22 secured to the under part of the table 4 and is enlarged to form a housing 24 for encasing gearing, herein consisting of a worm gear 26 secured to the shaft and meshing with avworm 23 arranged to rotate with a shaft 30 (see Fig. 17) The worm gear 2S and shaft 30 are herein shown driven by .a pulley 32, belt 34 and driving pulley 36 from the motor shaft 38, whereby the desired decreased speed may be imparted to the work table 4.

The motor 4Q from which the train of reducing gears driven by the shaft 38receives its motion is preferably secured to an appropriate part of the machine frame, desirably beneath the table 4 (see Fig. 17).

\ Thecarrier ring 2 is shown as having a flat top to receive or support the `base b of the heel blank B (see Fig. 4), and after the blanks have been properly positioned upon said ring, as will be more fully described, they are clamped in positions with their breast surfaces directed toward the inner face 42 of said ring 2, after which clamping means are brought into action rmly to clamp the blanks successively in positions for cutting or shaping operations. To this end there is employed a clamping member 44 having a roughened blank `engaging face 4S to engage the bottom face of the heel blank.

The clamping member 44 is mounted in a clamping head 48` to move up anddown bodily with said clamping head in the absence of a heel blank, but when the roughened end 46 of said clamping member engages the heel blank attoo high a point the said clamping member is adapted to yield slightly or the extent to which said heel block is set above the normal height of the heel. To provide for the above there is shown herein means comprising a cushioning spring 50 inserted in said clamping `member and which allows for the necessary yielding ofthe clamping member. To eiiect the clamping action of the clamping member automatically there is provided hereinl a pillow block 52. A cam member 54 is also provided which is rotatably mounted in said pillow block and engages a cam follower portion 55 of the clamping plunger. The follower 55 is arranged to be operated at the proper times bysaid cam during the rotation thereof, automatically to move the clamping member into Yengagement with the heel blank so as to clamp the work while the cutter is operating thereon. The cam member 54, shown most clearly in Figs. 7 to 10 inclusive, is so designed and operated. that rotation of said cam impartsk a step by step movement to the clamping membenand this step by step action is desirably instituted by means of a star-like wheel member 56 secured to one end of the cam 54 so as to rotate as one with said cam.

Each pillow block 52 is carried by a ring 58 mounted at a desired distance above the work supporting member 2 in adjusting devices hereinafter described, said adjusting devices being spaced circumferentially about said supporting member so as to provide uniform support therefor.

In the present example, the ring 58 is adjustablevertically upon a series of upright guide rods 60, shown most clearly in Fig. l2, said guide rods being spaced about and rigidly mounted in said work support 2 by screw threads $2 formed at their ends whichare screwed into tappedV holes 63 formed in the upper face of said work support. Shoulders 64 formed upon said rods engage theupper face of said work support and maintain said rods at a predetermined height relatively to said rods. Springs 55 encircle the guide rods E! and yieldingly support said ring 58 upon said rods. The upper ends of the guide rods 60 are further threaded at 63 and are engaged by nuts 12 made inthe form of sprocket wheels which engage spacing collars 'I4 arranged between the ring 58 and said sprockets.

Encircling the sprockets 12 and meshing with the teeth 13 of said sprockets is an endless sprocket chain 16, upon the revolving of which by any suitable means,'for example a wrench (not shown), the various sprockets 'l2 are simultane- 1 ously rotated and cause the threaded studs 6E! to be moved vertically in one direction or the other to effect a similar movement oi the ring 58 in constantly parallel relation with the work support l2. The springs S5 raise the ring 58 when the sprockets are rotated in one direction, and are compressed when said'ring is lowered by a reversal of movement of said sprockets under the action of the screw threads Si). Attached 'to one of the sprockets of said series, herein the sprocket A 12, is a hollow hub 18 provided with a squared endj to which said wrench may be fitted.

` By reason of theioregoing construction the clamping members 44 mounted upon said ring 58 at predetermined points may be adjusted at theproper times in the operation oi the machine to ,engage the heel block that is to be operated upon by the work member, as said carrier ring moves past said work member.

- 'Ifo render the machine automatic the clamping members are arranged to be set down automatically as said work carrier is revolved, so that no time will be lost between successive operations. Tothis end there is provided the step-by-step motion mechanism for operating said clamping device, hereinbefore mentioned, which preferably embodies a star wheel 82, which, as herein shown, has four arms 84, one face of each arm being camshaped as shown at 85. Cooperating with the arms 84 are cam rollers 88 two of which are carried upon a bracket 9@ secured by screws 92 to the stationary bed of the machine. In the present example there are two such brackets, as shown in plan view at B and B. The bracket B is arranged near and at one side of the cutting member S4, whereas the second bracket carrying cam rollers 88 is positioned near the opposite side of said cutting member, and these cam rollers being placed in the positions shown, for example in Figs. i, 7, 8 and 9, and arranged to engage the varms a., b, c and d, will be successively kicked previous rotation of the star wheel that it will,

just barely clear a heel blank upon the table 2, whereupon the rst kick of the star wheel by one of said cam rollers will cause the roughened end l5 of said clamping member to engage the bottom face of the heel ofthe blank positioned in the machine ready for operation. The next kick of said star wheel by the next cam roller to be engaged thereby merely effects an idle movement of the cam 54, for example approximately along the rest S5. This step does not change the position of the clamping member dii, but merely places the cam in. a position so that when the next cam roller is engaged by the arm c, said clamping member 45 will be raised to release the heel blank held thereby and permit the heel that was nished by the preceding cutting operation to be ejected from the machine. e The next movement of a star wheel, namely that caused by the engagement of the arm d with the next abutment, will cause the cam 54 to idle without effecting any movement of the clamping member d4, thereby placing said clamping memberin position to be moved intorengagement with the next heel block to be operated upon. I

As the work carrier 2 is circular in form and endless, said carrier will be moved continuously in one direction permitting the heel blanks W to be placed relatively close together, thereby eliminating all lost time in the operation of the machine and greatly speeding up the operation of the present machine over other machines now in use for this purpose. To facilitate the placing of the heel blank in alignment with the clamping members 54, there is desirably provideda gauge 98 adjustably secured in approximately radial relation to said work carrier and slightly at the left of eachV clamping member d4, so that when the block W is placed against the radial face ci said gauge S3, said blank will be positioned approximately centrally of the radial axial line of said blank. The gauge 953 is herein shown adjustable so that it may be moved to maintain blocks of different widths in central positions relatively to the axis of the cutter Sii when the heel blank is passing that point. Cooperating with the gauge 38 is a circumferentially arranged Work guide 55 (see particularly Figs. l, 15 and 18). The guide iii extends circumferentially of the carrier 2 a distance corresponding to a plurality of heel block positions, and in ad- Vance of the work cutting member gli, said guide being pivoted at H32 upon a bracket t secured to a fixed part or" the frame near the inner edge oi said carrier 2,

The outer edge IE6-of the guide |00 is desirably approximately concentric with the adjacent'edge |98 of said work carrier 2, but is adjustable about the aXis of the pivot I |12 sorthat the heel blocks, which are carried along by the carrier by means ci the gauges 93, will be engaged by the outer face E5 of said guide I9@ and moved radially to a position properly to align it with its respective clamping member. The heel blocks are naturally of varying designs andv shapes, consequently the devices for positioning said blocks relatively to their clamping members must be adjusted occasionally to fit the particular heel block to be acted upon, and to this end the guide It@ is provided with a downwardn ly extending lug Hs, and engages at its lower end the upper end il of an adjusting screw SI2 mounted in a iiXed part of the frame of the machine. A second adjusting screw I |3has a screw threaded stem lil for fitting a tapped hole in another fixed portion oi said machine, and extends radially into Contact with the downwardly projecting lug IIEE. A spring H5 is mounted between a xed abutment HG of the frame and said doumwardly projecting lug Illl, said spring normally tending to swing said guide outwardly about its pivot &2. 'I'iieadjusting screw M3 is arranged to be moved in or out radially of said carrier and during such movements to swing the guide it about its pivot H32 to ad just the position of said guide, and to'place `the end i il thereof in the desired relation to the work cutter, whereby the blocks W will leave the positioning devices at the exact location vdesired foraction upon it by the cutter head. The adjusting screw H2 is provided for securing and looking the guide Idil in its properly adjusted position.

To compensate for Wear and stretch in the endless chain lt provided for the adjustments of the studs which carry the ring 53, there is desirably provided an idler pulley' I I8 (seeFigs. l and 14), which is rotatably mounted upon an eccentric head HQ of `aV bracket I i9 (see Fig. 14), secured by a stud. H92 and a nut H93 in adjustable relation upon the ring 53, and being eccentrlcally mounted upon said stud H92 where-- by said idler pulley may be varied radiallyA of the carrier ring 2 between two adjacent sprocke ets 'l2 and thereby take up slack inV said chain 16.

The spring 5i), hereinbefore l referred to, is adapted to yield only slightly and has nothing to do withthe return of the clamping member to its upper position except insc far as the said slight yielding is concerned, but herein there are provided additional yielding means in the form'oi springs IES, threeoi which springs are circurnierentially spaced aS shown in Figs. l0 and l1 in recesses formed 'in the meinber and interposed between a shoulder or seat I 2| l near the lower Side of the ring 53, and a` flange |22 at the upper end of the movable member 44. By the foregoing arrangement the upper part or cam follower 55 and the clampingmember 45 with the spring 5b between them move in unison under the impelling action oi the cam 54, and when said clamping member 44 engages the hee` block; W (see Fig. lil), the spring 53 will be more or less compressed according to the height of the heel. Normally the upper end of the shouldered portion of the clamping member 45| vilbseat against the face |23 `in the clamping head and will be held in this position yieldingly by the springs |2il, butwhen said Vclamping .member is depressed by the-cam 54' the springs I2@ will be compressed as shown in said Fig. 10, through the spring 5B which latter will be compressedto a less extent than the springs |263 because larger and stronger.

It will be obvious that much dust will be created around the clamping heads of the device by the cutter head and that it will be desirable to provide means for preventing said dust from workingv into the crevices between thefrelatively sliding parts of said clamping head, and to this end means are provided, herein including dust washers which are inserted in an enlarged an. nular recess |24 in the member 58 containing said clamping members M. i

i The clamping member 44 is beveled on opposite sides |25 and 26, one of these bevels, herein the bevel |26, being beveled to a greater degree thanv the bevel |25, as indicated by the`distances e vand f (Fig. l0), These bevels provide clearance between the cutting member Vshown in dotted lines in Fig. l0, and opposite sides of the clamping member li, that is to say, when the clamping member e4 is tiuned with'its beveled side 52S toward the cutter 9e, as in Fig. l0, the latter may be tilted so as to produce a minimum offset or cant to the heel, as indicated at N, Fig. 6, without interfering with the clamping member, and when said clamping member is reversed so as to present the lesser beveled face |25 to the cutter it will produce a heel with a maximum offset or degree of' slant, as indicated at i. The machine however is not limited to degreesof bevel shown. To enable the clamping member to be readily changed from one of the foregoing positions to the other, said clamping member 34 has a cylindrical barrel to r'it withing the clamping head 48 and may be rotated so as to bring one or the other bevel |25 or |25 .face to face with the cutting faceoi the cutter. Oppositely disposed in the fia-nge |22 of the clamping member lid are two notches |'l and 28 and slidably mounted in said clamping head 48 is a key 29 which may be moved to Venter one or theother ofthe notches |21 and |23 and lock the clamping member from rotating in said clamping head. The key |29 is. notched at i3d to assist the operator in moving saidikey into and out of its notchengaging or clamping pesition `(see Figs; 8 and l1). A set screwV I3! is arranged normally to hold the key 29 in its adiusted positions.

The cutting member 94 is `herein arranged vto be rotated by means of a motor` 32, and said cutter head is capable of beingv tilted to a plurality of positions hereinbefore mentioned` for the purpose of changing the angle of the out in the breast of the heel as shown in Fig. 3 at 33. For the purpose of changing the angleior degree of cant of the out with respect to the bottom surface g of.' said heel (see Fig. 3), the motor iii-2, which rotates said cutter head, is adapted to be swung into a plurality of angular positions relatively to a horizontal piane. To accomplish this result said motor |32 is mounted upon a segmental frame |34 (see particularly Fig. 4) The center of the arc about which the motor casing I 32 and its cutter 94 are arranged to swing is indicated at |35 in Fig. said point being located desirably coincidentally with a point in the periphery of the cutter head fill, and in prorrimity to the deepest point of the cut to be made by said cutter in the face or breast of the heel block. The segmental frame |34 is providedin its `face with a segmental slot |36through which tok extend clamping screws |31, herein arranged on opposite sides of the motor casing |32. Also attached to said motor casing is a segmental rack 38 secured to the side of the motor casing by screws i3d, said rack having teeth to engage a worm itil rotatably mounted in a bearing Mi carried by the segmental frame i3d. The worm Mil is herein arranged to be rotated by a hand wheel M2 secured to the worm shaft in a convenient place to be operated from the operators position at the machine.

In addition to the segmental adjusting means for the cutter the latter is arranged to be moved bodily parallel with the face of the work support or carrier 2 and also in a direction perpendicularly to said face. To adjust the cutter head perpendicularly to face of said support said segmental frarne 34 has secured thereto, by means of the screws itl, a double faced plate M3 having tongues it@ arranged to operate in corresponding grooves lidformed respectively in the faces of the plate and i3d. Relative movement is effected between the plate M3 and the frame i3d along the lines of the abutting faces |41 by means, herein including a screw-threaded rod M8, having screw-threaded engagement with the plate i3d in a. tapped hole M29. The screw i238 is shouldered down at 255) to form opposed shoulders iiii and i552, between which is arranged a lug ist. The screw lill@ has a head i555 to which a wrench may be applied to rotate said scre-w and produce relative movement between the frame 34 and the plate M3. Screws 55 are provided between the frame i3d and the plate lri' in slots of one of said members to permit said relative movement when said screws are released, said screws being normally tight to hold said plate in stationary relation.

To adjust the cutter ed in a direction approximately parallel with the face of said work support 2 there are provided cooperating tongues and grooves 15% and E51 to cause the engaging surfaces represented by the line 53 to be properly guided, and this relative movement is herein effected by means of a screw 59, which is rotatably arranged between abutting shoulders lt!) and It! engaging a lug i552, the threaded end of said screw i523 having engagement with the slide i133. Screws 563 between the plates E43 and 1F32 and working in slots ltd in one oi said plates are provided for securinCr said plates in their adjusted positions by the screw B59. In addition to the cutter head 94, which is provided solely for cutting the breast of the heel, there is provided a second work member or cutter E14 (see Figs. l and l2). This cutter preferably has straight teeth, and is arranged to engage the lip it of the blank (see 1ig. 3) and concave said lip on an arc equivalent to one struck from the center ci said work support. The cutter E14 is secured by a nut te to the arbor |51 of a motor mounted in the casing ltd (see Fig. 12) The motor arbor |61 is rotatably mounted in a bearing I 69, the latter being eccentrically mounted in motor casing 15S by a clamping screw i153, said motor casing being mounted upon the stationary part 4 of the work carrier-support.

The cutter Hd is arranged to rotate about an axis approximately vertical with its cutting edge engaging the lip surface |65 of the heel, and in order to yadjust said cutter to conform` to the position of the block on the work carrier, the screw il@ is released and the eccentric lli carrying the bearing 68 is rotated by means of a handle |12 to bring the axis of the motor arbor I 61 to the right location relatively to the heel block.

The invention is not limited to the specific embodiment shown.

What is claimed is:

1. A machine for shaping heel breasts comprising a heel blank holder, a rotating cutter head, and means to rock said cutter head about a selected point in the heel breast to vary the inclination of the heel breast.

2. A machine for shaping heel breasts having, in combination, a heel blank holder for bodily moving a heel blank about an axis of rotation, a rotary cutter for operating upon said blank as it is so moved, the axis of rotation of said cutter and the axis of rotation of said heel blank intersecting, and means for adjustably tilting the axis or rotation of said cutter about an axis normal to the plane defined by said intersecting axes and approximately tangent to the portion of said cutter which forms the deepest part of the heel breast. Y

3. A machine for shaping heel breasts having, in combination, a heel blank holder for bodily moving a heel blank about an axis of rotation, a rotary cutter for operating upon said blank as it is so moved, the axis of rotation of said cutter and the axis of rotation of said heel blank intersecting, means for adjustably tilting the axis of rotation of said cutter about an axis normal to the plane dened by said intersecting axes and approximately tangent to the portion of said cutter which forms the deepest part of the heel breast, and means for adjusting said cutter relative to said holder for varying the position of the deepest part of the heel breast.

l. In combination, a heel blank holder, a cutter head, said holder being arranged to move a heel blank past said cutter head with the vertical axis of the heel describing a curved surface, means to effect rotation of said cutter head about its own axis, and means to tilt said cutter head about an axis parallel with the seat of said heel blank to vary the inclination of the heel breast.

5. In an apparatus of the character described, a heel blank support, means to secure the heel blank to said support, a cutter head, means r'elatively to move said cutter head and said support to form a breast which throughout is concave in horizontal planes of the heel, and means to vary the position of said cutter head transversely of said work support to vary the depth of the concavity of said heel breast.

6. A heel grooving machine comprising, in combination, a heel blank support, a cutter head, means relatively to move said heel blank support and said cutter head to form a heel breast which throughout is concave in horizontal planes of the heel, means to vary the position of said cutter head toward and away `from the breast of the heel to vary the depth of the breast concavity, and means to vary the position of said cutter head relatively to said heel blank to vary the location of the deepest point of the heel breast relatively to the heel lip.

7. A heel grooving machine comprising a rotary work support, means for clamping heel blanks to said work support, a rotary cutter arranged to operate upon the faces of said blanks opposed to the axis of rotation of said support for breasting said blanks, and means to adjust said rotary cutter relative to said support to a plurality of different angular positions relatively to said work support to vary the angle of the breast of the heel.

8. In combination, a heel blank support ar- Cil ranged to revolve about an axis, a rotary cutter head for breasting the faces of heel blanks opposed to said axis, and means to move said cutter head radially of said Work support to vary the depth of said out.

9. A machine for grooving heels comprising a Work support arranged to revolve about a vertical axis, means to clamp the Work on said support, a rotary cutter head, means relatively to rotate said cutter head and said Work support to concave the breast of the heel transversely in a plane parallel with the seat of said heel, and means to tilt the cutter head radially of said work support to vary the inclination of the heel breast.

10. A machine for breasting heels comprising a heel blank holder, a cutter head, means relatively to move said heel blank holder and said cutter head to concave the heel breast in horizontal planes of the heel, and means to tilt said cutter head to vary the inclination of said heel breast.

11. A machine of the class described comprising a revolving Work carrier, cutter means, means relatively to move said Work carrier and cutter means to shape the Work, and means automatically to clamp and release the Work on said work carrier including a star wheel mechanism operated during the rotation of said work carrier.

l2. A machine of the class described comprising a revolving Work carrier, cutter means, means relatively to move said Work carrier and cutter means to shape the Work, and means automatically to clamp and release the Work on said Work carrier including star wheel mechanism on said revolving Work carrier, and normally stationary means for operating said star wheel mechanism.

13. In a heel breasting machine, a circular heel carrier, heel clamping means on said carrier, a cutter arranged Within said circular carrier adapted to be tilted to vary the angle of the heel breast with respect to' the vertical axis of said heel, a clamping member for said heel, and means operated by said carrier automatically to operate said clamp to secure the heel blank to said heel carrier.l

1li. In a heel breasting machine, a heel holder, a rotatable heel clamping member, a cutter, means relatively to move said cutter and said heel holder to breast said heels, and means to adjust said cutter to different angular positions relatively to said heel, said clamping member having its opposite faces differently beveled respectively to clear said cutter during the breasting operation in different positions of angular adjustment of said cutter.

15. A machine of the character described having, in combination, a rotary holder for heel blanks arranged to move the blanks in an arcuate path with their breast portions facing the axis of rotation of said holder, a rotary cutter for operating upon said blanks for grooving the heel breasts, said cutter being Within the orbit followed by said holder and having its axis lying in a plane which includes the axis of said holder, and means for adjustably tilting the axis of said cutter in said plane.

16. A machine of the character described having, in combination, a rotary holder for heel blanks arranged to move the blanks in an arcuate path with their breast portions facing the axis of rotation of said holder, a rotary cutter for operating upon said blanks for grooving the heel breasts, said cutter being within the orbit followed by said holder and having its axis lying in a plane which includes the axis of said holder, means forl adiustably tilting the axis of said cutter in said plane, and means for adjustably moving it in said plane in directions parallel Awith the axis of said holder and perpendicularly` thereto.

17. A machine of the character described having, in combination, a heel blank holder mounted for rotation about a vertical axis, a rotary cutter for brea-sting the blank having' an axis in a vertical plane which includes the axis of `said holder, and

means for adjustably tilting said axis of said cutter in said plane about a horizontal axis normal to said plane and approximately tangent to that portion oi the face of said cutter which forms the deepest part of the breast.

18. A machine of the character described having, in combination, a heel blank holder mounted for rotation about a vertical axis, a rotary cutter Within the orbit followed by the heel blank When rotated by said holder, said cutter adapted to operate upon the blank for breasting it and having its axis in a vertical plane which includes the axis of said holder, and means for adjustably tilting said axis of said cutter in said plane for varying the inclination of the heel breast.

19. In a machine of the class described, a circular Work carrier, means to against 'the face o1" said Work carrier, a lip trimming cutter arranged Within said circular work carrier, and means to adjust said cutter radially of said Work carrier to vary the depth of out.

20. Ina machine of the class described, a circular Work carrier, means toclamp the Work against the face of said work carrier, a motor driven lip trimming cutter arranged Within said circular Work carrier, and means to move said cutter transversely of said Work carrier and radially thereof to Vary the depth of cut.

21. In combination, an annular heel blank holder arranged to carry heel blocks in a circular path With their seats arranged horizontally, a cutter head, means to rotate said cutter head about its axis, and means to tilt said cutter head to bring its axis of rotation in different angular positions relatively to the axis of movement of said heel blocks to vary the inclination of the breasts of the heel blocks.

ARCHIBALD T. GULLIFORD, Administrator of the Estate of Nicholas L. Gulliford, Deceased.

clamp the Work

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