US1187893A - Edge-finishing machine. - Google Patents

Description

H. E. ENSLIN.

EDGE FINISHING MACHINE.

APPLICATION msn MAY1,1915.

Patented J une 20, 1916.

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H. E. ENSLIN.

EDGE FINISHING MACHINE. APPLICATION FILED MAY I. 1915` Patented June 20, 1916.

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I LIL H. E. ENSLIN.

EDGE FINISHING MACHINE.

APPLICATION FILED MAY I, IsI5.

Patented June 20, 1916.

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H. E. ENsuN.

l EDGE FINISHING MACHINE.

APPLICATION FILED MAY l 1915.

Patented June 20, 1916.

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H. E. ENSLIN.

EDGE FINISHING MACHINE.

APPLICATION FILED MAY I, I9I5.

1,91 @R393 n A l Patented June 20, 1916.

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HERBERT ELLIOTENSLIN, 0F MALDEN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CQMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

EDGE-FINISHINGI MACHINE.

To. all whom t may concern:

Be it known that I, Hna-BERT E. ENsLIN a citizen of the United States, residing at,

Malden, in, the county of Middlesex and State of Massachusetts, having invented certain Improvements in Edge-Finishing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to finishing the edge of a piece of stock by the method disclosed in the patent to Halsey and Perkins No. 1,047,211; and is herein illustrated in connection with a machine for finishing the edge of a piece of upper leather which is to be used in the manufacture of boots and shoes.

As is explained in the patent referred to above the edge of a piece of leather may be finished by applying a shrinking agent to the margin on one sidecof a piece of leather so as to shrink that side more than the other side. For example if heat of a proper degree is applied to the margin of the flesh side of a piece of leather, said flesh side will be shrunk and the grain side caused to curl toward the flesh side with the result that the grain is drawn over to form the finished edge.y Y

ln the application of Halsey & Perkins Serial No. 670,801 a machine for accomplishing this result is shown in which the hot tool is held from movement in the line of feed and the stock is f'ed over a support and past said tool in such a manner as to cause the margin of the stock to be traversed by the tool. In a machine of this type certain difficulties arise particularly when a piece of stock having'a curved edge is being operated upon since in making the turn the action of the tool upon the stock is liable not to be the same as upon a straight edge.

One feature of the present invention comprises a support for a piece of stock, a templet adapted to rest upon the stock so as to leave the margin exposed, and means for shrinking one side of said exposed margin. lith this construction the area acted upon by the shrinking agent is of uniform width throughout and the shrinking e'ect likewise uniform irrespective of the radins specification of Letters Patent. Patntd Jun@ 2U,- 191g Application led May 1, 1915,.

Serial No. 25,237.

of curvature o-f any curve or curves which may be present.

Another feature of the invention comprises a machine of the type last referred to in which the templet is held stationary during the shrinking operation, while the member which applies the shrinking agent moves along said templet and over the margin of the stock.

These and other features of the invention including certain details of construction and combinations of parts will be described 1n connection with an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings, Figure 1 is a side elevation of a machine in which the present invention is embodied; Fig. 2 is a front elevation with part of the work support broken away; Fig. 3 is a section on the line 3--3 of Fig. 1; Figs. 4, 5 and 6 are a detail elevation, plan and section respectively of theheating tool and its mounting; Fig. 7 is a perspective showing more particularly the mechanismv for raising and lowering the gages; Fig. 8 is a detail showing the mechanism for controlling the movement of the tool around or along the templet.

Slidably mounted in the base of the frame 1 of the machine is a work support 5 having a flat top upon which the piece of leather is held during the shrinking operation. This support is slidable on rods 9 and has fast to it a rack-bar 11 which meshes with a pinion 13 fast to a shaft 15.

.Loose upon said shaft are two bevel gears 17 either of which may be connected with the shaft by a sliding clutch member 19 which is held first to the right and then to the left by a yoke 21 in a manner presently to be described. The bevel gears 17 are driven continually in opposite directions by a large bevel gear 23 so that by varying the position of the clutch member 21 the position of the work support may be controlled.

As will presently be explained the movements of the clutch member are controlled automatically so that` with the parts of the machine in the positions shown in Fig. 2, the work support 5 is held in its extreme left hand position as shown while a piece of leather placed upon its right hand end is being operated upon, is then moved to its port and replace it by a'blank while the preceding blank is being operated upon at the other end of the support. Y

It is desirable that gages be provided for aiding in the proper placing of the pieces of leather on the table, that these gages be iiush With or below the surface of the table when they arebeneath or adjacent to the shrinking tool and that they be raised into operative position when that end of the support by which they are carried is exposed for removal of the finishedpiece and its replacement by a blank Vwhich is to be operated f Thevpurpose of these flanges is to space the -upon. In the present machine two sets of `25to facilitate adjusting the two sets of gages as willV presently be described. In Fig. 2 the left hand endof the work support is exposed while the right hand end is beneath the operating tool, the gages 25 extending above the surface of the work support so that a piece of leather may be properly located by placing its edge against them. If the machine were being operated the gages 27 would at this time be flush with the surface of the work support, but in this figure these gages 27 are vshown raised temporarily into the plane of the templet 29 so that both sets of gages may be simultane- V ously adjusted in accordance with the contour of the templet preparatory to starting the machine. Y

The gages 27 are surrounded by sleeves 31 which yhave flanges 33 at their upper ends.

i Y gages V27 a'proper distance from the inner wall of the templet during the adjusting operation.A As soon as the adjustment has been made the sleeves and' gages are permitted to be v'forced downwardly by the springs 35 l vfast in cylindrical blocks 37 which are horizontally slidable in cylinders 39, said cylinders in turn being formed in a rectangular frame 40Y (see Fig. 3) which is vertically slidable on the Shanks of screws 41- threaded into the under side of the table or support 5. The sleeves 31 are vertically slidable through bores in the blocks 43 which are horizontally slidable in the table. Springs v45 located between the'under surface of the table and the upper surface of bosses on the frame 40, through which the Shanks of the screws 41 pass,V tend to hold said cylinders down against the heads of said screws. When, therefore` the springs 35 and 45 are free to act, the tops of the flanges 33 as well as the tops of the gages 27 are fiush with the upper surface of the table. Vhen now it is desired to adjust these gages in accordance with the contour of the inner wall of the particular templet which is to be used, the frame 40 in which the bores 39 are formed is pushed upwardly into the position shown by depressing a handle 47 and locking it with a detent 49. This brings the lianges 33 into register with the templet, and then the operator moves the sleeves 31 manually until the flanges contact with the inner wall of the templet. When this has been done, the parts are in the position shown. The handle 47 is then raised and the detent 49 allowed to slip into the socket 51 whereupon the springs 35 and 45 depress respectively the sleeves 31 and gages 27 until the tops of the flanges and of the gages are fiush with the upper surface of the table.

In, order that each pair of the gages 25 may be automatically adjusted when the corresponding pair 27 are adjusted, the left hand gage of each pair of the gages 25 is connected bv a link 53 with the left hand gage 27 of the corresponding pair, this connection being effected through screws 55 which lpass through the ends of the link into the sliding blocks 143. Similarly the right hand one of each pair of the gages 25 is connected by a link 59 with the right hand one of the corresponding pair of the gages 27.

The left hand gage mechanism except for the sleeves 31 and the handle 47 is substantially identical with that of t-he right hand gage mechanism which has just been described and the corresponding parts are indicated by reference numerals which difler by one hundred from those of t-he right hand mechanism.

The frames 40, and with them the gages 25, 27 are alternately raised against the tension of the springs 45, by means of arms 161, 61. Referring to Figs. 2, 3 and 7 the arms 161 are pinned to a shaft 163 which is rotatably mounted in the work support. Depending from a hub on said shaft is a tail 165 which is forked to embrace a rod 169 said rod heilig supported at its ends in bearings in the sliding work support 5. Collars 171 and 71 fast to said rod near its ends permit a slight longitudinal movement of said rod with respect to said support. The frame 1 of the machine is provided with two vertical walls 175, 75 the wall 175 being provided with a groove 179 in its top through which the rod 169 passes, the groove in the wall being suliillO ciently large to permit the tail 165 to pass through it but sufliciently small to Prevent' the collar 171 from sopassing. Upon arod 63 which corresponds to the rod 163 are mounted arms 61, a hub on said sha-ft being provided with a tail 65 which is forked to embrace the rod 169, the vertical wallfl 75 having a. groove 79 in its top similar to the groove 179 in the wall 175;

Ordinarily the handle 49 is in its raised inoperative position, and when it is soheld the alternate raising and lowering of the gages 25 and 27 as the work support reciprocates takes place as follows: In the position of parts shown in Figs. 2, 3 and 7 when the work support 5 is at the extreme left hand limit of its movement the gages 2'5 are held up as shown by the arms 61, said arms in turn being held by the pressure of the collar 171 on the forked tai-l 165 due to the fact that just before the eXtreme left hand limit of movement of they work support wasl reached the collar 71 contacted with the wall 75 thereby stopping the movement of the rod 169 with the work support. The last part of the movement of the work support to the left thus brought the forked tail 165 against the collar 171 whereby the shaft 163 was rocked and the arms 161 swung up into" the position shown. lhen, now, movement to the right takes place, the first effect, as the collar 71 moves away from the wall 75, is to permit the rod 169 to move slightly to the left with respect to the work support 5, thereby releasing the forked tail 165 and permitting the frame 140 and with itv the gages 25 to drop. Then the work support approaches the limit of its right hand movement the collar 171 contacts with the wall 175 thereby preventing further movement of the rod 169 to the right. The last part of the movement of the work support 5 to the right forces the forked tail 65 against the collar 71, and swings the arms 61 upwardly, thereby raising the gages 27. 1n

order to clamp the pieces of leather in position on the work support when the gages are moved down to inoperative position two U-shaped spring arms S1, 181 are provided, the ends of the legs of which pass down through the top of the work support and are fastened to the frames 4:0, 1410 so that these clamps have the same vertical movements as their respective gages.

Turning now to Figs. 2 and 7 the handle 17 is integral with a hub which is rotatably mounted on the rod 63, said hub having a depending arm S3 provided with a pin 85 which extends beneath the arm 61. When, therefore, the handle 17 is in the position shown in Fig. 2 the gages 27 with their sleeves 31 will be raised into the positionA shown while when the handle is raised and the detent 49 in Vengagement with the socket 51, the tops of the flanges 33 will be iiush .will be described.

with the top of the work support and the vertical position of the gages 27 at any time will depend upon the relative positions of the tail 65 and collar 71 as has been eX- plained above.

Referring now more particularly to Fig. 1 the operation in timed relation of the work support, the templet and the shrinking tool The templet 29 is provided at each end with square sockets to receive -square pins S7 and 89 the pin 87 being integral with the templet carrier 91 and the pin 89 being integral with an arm 93 pivoted at 95 to said carrier, a spring 97 serving to hold said arm as shown while a handle 99 furnisl'ies means for swinging the arm outwardly to permit the templet to be removed and replaced by one of different form if desired.

The carrier 91 is provided with two bosses 101 which are vertically slidable on rods 103 fast to an overhanging arm of the frame of the machine. Rotatably mounted 1n the carrier 91 is an upright stud 105 having a.

large sprocket wheel 107 fast to the upper end thereof and a smaller sprocket wheel 109 fast to the lower end thereof. A chain 111 passes around the wheel 109 and around a sprocket wheel 113 of the same size rotatably mounted on an upright stud also carried by the carrier 91. Running across the longitudinal center of the carrier 91 is a track 115 comprising a rabbeted slot. Through the slot passes the cylindrical stem of a bearing member 117, the rectangular head of said member being slidable in the track formed by the rabbeted upper portion of said slot, The tool holder carrier 119 is clamped to the lower end of a rod 121 to the upper end of which `is fastened an arm 123; and the upwardly extending end of this arm 'is fastened to a link of the chain 111. Consequently when the chain is set in motion the bearing member 117 travels back and forth in the track 115 while the rod 121 is free to turn in said bearing member.

Referring now more particularly to Figs. f1, 5 and 6, an endless band of insulating material 126 is held by depending portions ef the templet carrier 91, and to the insulating material are fastened the leads 129 of a transformer 131. The tool holder carrier 119 is made in two parts separated by insulating material 133 and provided with a horizontally disposed passage rectangular in cross-section in which the steln of tool holder 135 is slidable, said tool holder being made in two parts separated by insulating material 183 which registers with the insulating material by which the parts of the tool holder are separated. At one end of the upper part of the tool holder 135 are mounted two rolls 185 located one on each side of the templet 29 so that when the bearing member 117 is reciprocated the tool will follow the contour of the templet. The illustrative tool 187 consists of a loop of wire of high resistance material such, for eXample, as platinum. One end of the wire is attached by a screw 189 to the lower member of the toolrholder 135, and the other end of the wire is attached by the screw 191 to the upper member of the tool holder, Brushes 193 connect the upper part ofthe member 119 with the upper lead 129, and the lower member of the tool 'holder 135 with the lower head 129. /With this construction a current of electricity may be passed through the loop of wire which forms the tool, and as this tool travels around the inside of the' templet 29 the margin of the leather 200 which projects beyond the inner wall of said templet. will be subjected to the action ofsaid tool, and the edge of the leather finished as described in the Halsey 8a Perkins patent referred to above. A plow 'or similar member 190 holds the edge of the stock 200 upagainst the tool.

Referring now to Fig. 1 once more, the templet carrier 91 is connected with the y overhanging part of the frame 1 by toggle levers 201 which may be straightened and broken by a two-part link 203, the parts ofvwhich are. connected byV a spring 205. This two-part link is pivoted at 207 to a bell crank lever`209 having a roll 211 at the end of its horizontal arm which runs in a track 213 in a cam which is fast to the shaft 215. Fast to the shaft 215 is a gear Y217 which meshes with a spiral gear 219 107 through which the chain 111 is driven, 'meshes with a wide gear 227 which rotates on astud carried by the frame of the machine, said wide gear'meshing in turn with I vaA gear 229 which is loose on the vertical Y shaft 221 but may be clutched to said shaft by a slidable clutch member 231. A spring 233 Vnormally holds the clutch member 231 y in inoperative position as shown; and a Alever 235 pivoted-'to the frame of the ma= chine isv arranged to raise said clutch member to clutch the gear 229 to the shaft 221.

' This lever has pivoted at 237 near its right hand end-v a stop 239 which is normally held upright by means of a spring but may be swung about the pivot 237. An actuating member 241 fast to the templet carrier 91 the heated tool has completed the circuit of the inside wall of the templet 29 and has therefore passed once over the margin of the piece or pieces of leather The operation of the machine is as follows: Power having been applied to the pulley 251 the shaft 253 is rotated said shaft operating through the gears 255, 257 to rotate the shaft 221 continuously; and this shaft, through the spiral gear 219, rotates the member 220 having the cam tracks 213 and 225. Through the action of the cam track 225 the work support 5 is moved alternately from the extreme left-hand position shown in Fig. 3 to the extreme righthand .position and then back again and is held in each extreme position until the templet 29 has been brought down upon the stock, the tool has traversed its margin, and the templet has risen. During these dwells the operator removes the piece or pieces of stock which have previously been operated upon and places a new piece or pieces in position against the gages 25 or 27 as the case may be. The templet 29 is brought down upon the stock and raised from it, as has been explained, by the action of the cam track 213. The same track also causes the shrinking tool to complete the circuit of the templet and come to rest. The templet 29 in the illustrated embodiment of the invention has been shown as of a contour suitable for operation on four toe tips at each operation of the burning tool, but it should be understood that a set of templets is provided with each machine which have contours suitable for operating upon Vamps, button-flies and articles of any contour which may be encountered.

. Referring to Fig. 2, a series of cams 259, one of which is shown, are formed upon hubs 261 which are loosely mounted on a shaft 263 carried by the support 5, each hub having a tail to which is pivoted one end of a link264 the other end of which is pivoted to the casting 40 in which the bores 39 are formed, springs 265 tending to swing the tails to theleft. The purpose of the cams 259 is to lock the gages 25 and 27 in position after they have been adjusted by pressing against the under side of the bars 53, 59 which connect said gages. In the position shown, with the gages 27 raised,

the cams are inoperative, but when said gages have been drawn down by the springs 45 the hubs 261 will be swung to cause the cams 259 to force the bars 53, 59 against bosses formed on the under side of the flat top of the work support 5.

Although the invention has been set forth in connection with a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine shown and described. ,Y Having thus described my invention, I

claim as new and desire to secure by Letters Patent of the United States:

l. A machine for finishing the edge of a piece of stock, having, in combination, a support for a piece of stock, a templet adapted to rest upon the stock so as to leave the margin exposed, and means for shrinking one side of said exposed margin.

2. A machine for finishing the edge of a piece of stock, having, in combination, a support for the piece, a templet the contour of a portion ofl which` corresponds to the contour of that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for applying a shrinking agent to said exposed margin.

A machine for finishing the edge of a .aiece of stock havine in combination a support for the piece, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for shrinking one side of said margin more than the other side to finish the edge.

t. A machine for finishing the edge of a piece of stock, having, in combination, a support for the stock, a member for applying a shrinking agent to said stock, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for causing said exposed margin to be acted upon by said member.

5. A machine for finishing the edge of a piece of stock, having, in combination, a support for the stock, a4 member for applying a shrinking agent to said stock, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for causing said exposed margin to be acted upon progressively by said member.

6. A machine for finishing the edge of a piece of stock, having, in combination, a support for the stock, a tool, means for heating said tool, atemplet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be iinished, means for clamping said piece between said support and templet with the margin of said piece exposed, and lneans for causing said exposed margin to be acted upon by said tool. i

7. A machine for finishing the edge of a piece of stock, having, in combination, a support for the stock, a tool, means for heatcausing relative movement between said ing the tool, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for causingsaid exposed margin to be acted upon progressively by said member.

8. A machine for finishing the edge of a piece of stock, having, in combination, a support for the stock, a member for applying a shrinking agent to said stock, a templet the contour of a portion of which corresponds to the contourof that edge of the piece which is to be finished, means for clamping said piece between said support and templet with the margin of said piece exposed, and means for causing said' member to travel along said templet in operative relation to said exposed margin.

9. A machine for finishing the edge of a piece of stock, having, in combination, a support for a piece of' stock, a member for applying a shrinking agent to said stock, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for causing relative movement between said support and templet to bring said templet and piece into register, means for causing relative movement between said support and templet in another direction to bring said templet into contact with the piece in such a manner as to leave the margin of said piece exposed, and means for causing said exposed margin to be acted upon by said member.

l0. A machine for finishing the edge of a piece of stock, having, in combination, a support for a piece of' stock, a member for applying a shrinking agent to said stock, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is tobe finished, means for support and templet to bring said templet and piece into register, means for causing relative movement between said support and templet in another direction to bring said templet into contact with the piece in such a manner as to leave the margin of said piece exposed, and means for causing said exposed margin to be acted upon progressively by said member,

- 11. A machine for finishing the edge of a piece of' stock, having, in combination, a support for a piece of stock, a tool, means for heating the tool, a templet the contour of a portion of which corresponds to the contour of that edge of the piece which is to be finished, means for causing relative movement between said support and templet to bring said templet and piece into register, means for causing relative movement between said support and templetV in an- 1M other direction to bring said templet into contact with the piece in such `a manner as to leave the margin ofsaid piece exposed,

and means for causing said exposed margin to be acted upon by said tool. A

12.1 A machine for finishing the edge of a piece of stock, having, in combination, a

support for a piece of stock, a tool, means for heating vthe tool, a templet the contour of a portion of which corresponds to the contour of Vthat edge of the piece which is to be iinished, means for causing relative movement between said support and templet Yto bring said templet and piece into register,

means for causing relative movement between said support and templet in another Aao causing relative movementJ between said support and templet to bring said templet and piece into register, means for causing relative 'movement between said support and templet in another direction'to bring said templet into contact with the piece in Ysuchra manner yas'to leave the margin of said piece exposed, and means for causing said member to travel along said templet in operative relation to said exposed margin.

14. A machine for iinishing the edge of 'a piece of stock, having, in combination, a

templet the contour of a portion of which Vcorresponds to that ofthe edge of the piece which is to be nished, a tool, means for heating the tool, means for causing said tool to travel along the edge of said templet, a support for a plurality of pieces of stock, means for reciprocating said support be- Y neath said templet and tool to successively bring into register with said tool iand templet the different pieces of stock lying on .'"said support, and means for bringing said templet and tool into contact with said pieces of stock as each piece comes into register and for causing said tool to travel along said templet.

15. A machine for finishing the edge of a piece of stock, having, in combination, a templet and` a tool, means for heating the tool, .a support for pieces of stock located beneath said templet and tool, means for moving said support to bring one piece after another :intoy register with said tool and templet, means for bringing said templet down upon each piece as it comes into register to clamp it temporarily to the support,

means for causing the tool to travel along the edge of the templet and in contact with the margin of the piece, and means for raising the templet and tool at the completion of travel of the tool.

16. A machine for inishing the edge of a piece of stock, having, in combination, a support provided with a plurality of localities in which pieces of stock may be placed, a shrinking tool, means for moving said support to bring said localities successively into register with said tool, and means for causing said tool to act upon each piece when properly located.

17. A machine for finishing the edge of a piece of stock, having, in combination, a support provided With a plurality of localities in which pieces of stock may be placed, a shrinking tool, means for moving said support to bring said localities successively into register With said tool, and means for causing said tool to act progressively upon each piece when properly located.

18. A machine for finishing the edge of a piece of stock, having, in combination, a support provided with a plurality of 1ocalities in which pieces of stock may be placed, a templet the contour of a portion of which corresponds to the contour of that edge of the pieces which is to be finished a tool, means for heating the tool, means or moving said support to bring said localities successively into register With said tool, means including said templet for clamping each piece, las it comes into proper position between said templet and said support, with the margin of said piece left exposed and means for causing said tool to act upon said margin.

19. A machine for finishing the edge 0f a piece of stock, having, in combination, a support provided with a plurality of localities in which pieces of stock may be placed, a templet the contour of a portion of which corresponds to the contour of that edge of the pieces which is to be finished, a tool, means for heating the tool, means for moving said support to bring said localities successively into register with said tool, means for clamping each piece, as it comes into proper position between said templet and said support, the margin of said piece being exposed and means for causing said tool to act progressively upon said margin.

20. A machine for iinishing the edge of a piece of stock, having, in combination, a support for a piece of stock, a templet adapted to rest upon the stock so as to leave the margin exposed, a tool, means for heating the tool, means for moving said tool along said templet in operative relation to said exposed margin, and means for holding the edge of the stock against the tool.

21. A machine for iinishing the edge of a piece of stock, having, in combination, a templet the contour of which corresponds to that of the edge of the piece which is to be finished, a tool, means for heating the tool, a support for a plurality of pieces of stock, gages mounted in said support, means for reciprocating said support beneath said templet and tool to bring into register with said tool and templet the different pieces of stock lying on said support, means for alternately raising and lowering said gages, and means for bringing said templet and tool into contact with said pieces of stock as each piece comes into register therewith.

22. A machine for operating upon pieces of stock, having, in combination, a tool, a support located beneath said tool, two sets of gages vertically movable with respect to` said support, means for reciprocating said support to bring the pieces of stock located by said gages alternately into register with said tool, and means for causing relative movement between said tool and support to cause said tool to act upon said pieces.

23. A machine for operating upon pieces of stock, having, in combination, a tool, a support located beneath said tool, two sets of gages vertically movable with respect to said support, means for reciprocating said support to bring pieces of stock located by said gages alternately into register with said tool, connecting means between the members of the sets of gages, and means for causing relative movement between said tool and support to cause said tool to act upon said pieces.

In testimony whereof I have signed my name to this specification.

HERBERT ELLIOT ENSLIN.

@oplet of this patent may be obtained for ve cents each, by addressing the Commissioner of Patente, Washington, D. C."

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