US1740721A - Metal-working machine - Google Patents

Description

S. A. ASQUITH METAL wpRxINe MACHINE Dec. 24, 1929.

"Filed May 25 1927 5 Sheets-Sheet 2 INVENTOR. 5A. ASOU/TH I A TTORNE Y.

Dec. 24, 1929. s. A. ASQUITH METAL WORKING MACHINE Filed May 25, 1927 5 Sheets-Sheet 5 i mm IIIIIIIIL I N V EN TOR. 5. A. HSQU/ TH A TTORNE Y.

Dec.v24, 1929. s. A. ASQUITH METAL WORKING MACHINE 5 Sheets-Sheet 4 Filed May 25, 1927 7 ul l INVENTOR. 5. r9. fiSQU/TH A TTORNEY.

Dec. 24, 1929. s. A. ASQUITH METAL WORKING MACHINE Filed May 25, 1927 5 Sheets-Sheet 5 V I m, r l W:

INVENTOR. 5. A. FISQU TH Patented Dec. 24, 1929 UNITED STATES PATENT OFFICE METAL-WORKING MACHINE Application filed May 25, 1927. Serial No. 194,092.

This invention relates to improvements in metal working machines.

The general object of this invention is to provide a metal working machine having a work support which is movably supported by a system of parallel links.

A more specific object of my invention is to provide ametal working machine having a movable work support and wherein a pantograph mechanism may be attached for imvide in combination with a metal working machine a movable work support means whereby a pattern may be clamped on the work support and moved relative to an indicator, thereby causing the work to move relative to the punch along the same lines as the pattern moves relative to the indicator.

Another object of this invention is to provide a novel metal working machine having a reciprocating plunger and a rotatable spindle driven independently from the same source of power.

Another object of this invention is to provide a novel system of quick change pulleys for varying the actuating speed of a metal working machine.

Other objects and advantages of this invention will be apparent from the following description taken in connection with the accompanying drawings wherein:

Fig. 1 is a side elevation of a machine embodying the features of my invention.

Fig. 2 is a front view of the machine.

Fig. 3 is a side elevation of the machine showing the side opposite to that shown in Fig. 1.

Fig. 4 is a section of my device taken on line l of Fig. 1, showing the parallel link support for the work supporting table.

Fig. 5 is a top plan view of the device showing the pantograph machine operably attached to the work supporting table.

Fig. '6 is an enlarged section of the punch mechanism taken on line 66 of Fig. 1.

Fig. 7 is aside elevation partly in section of the punch mechanism shown in Fig. 6.

Fig. 8 is an enlarged fragmentary side elevation partly in section of the vertical rotatable spindle mechanism of my device.

Fig. 9 is an enlarged section taken on line 99 of Fig. 8.

Fig. 10 is an enlarged side elevation of the electric motor for driving my device.

Fig. 11 is a section of the motor raising and lowering mechanism taken on line 11-11 of Fig. 10.

Fig. 12 is a front elevation of the motor raising and lowering mechanism.

Fig. 13 is an enlarged top plan view partly in section of a catch mechanism for retaining the motor in an adjusted horizontal position.

Fig. 14 is a fragmentary section taken on line 14:14 of Fig. 10 showing the motor pivot and clamping means.

Fig. 15 is an enlarged sectional view of one of the work supporting table bearings showing the means for detachably securing the pantograph machine thereto.

Fig. 16 is a section taken on line 16-16 of Fig. 15.

Fig. 17 is an enlarged view of the pantoframe 11 supported on a base 12 which may 0 be of any desired form. The U-frame 11. supports a punching mechanism shown in detail in Figs. 6 and 7 as comprising a reciprocating plunger 13 adapted to actuate the male die 14, a female die 15 and a stripper 16. The male die member 14 is preferably detachably secured to the plunger 13 as by set screws 17 or in any other suitable manner. The female die portion 15 is shown as detachably secured to the -Uirame 11 by bolts 18.

The particular construction and manner of securing the various die members may be changed to suit various sizes of machines and forms no immediate part of this invention.

The stripper 16 may be rigid or it may be mounted to swing as shown in Figs. 6 and 7. The stripper 16 shown is pivotally secured to the frame 11 by a bolt 19 and to clamp the stripper in a rigid position I provide another bolt 20. To allow for a pivotal movement of the stripper about the bolt 19 I provide in the stripper a radial slot 21 through which the clamping bolt passes.

To allow for a vertical adjustment of the stripper to accommodate various thicknesses of metal, I may if desired provide elongated slots 22 adjacent to the bolts 19 and 20. A slot 23 is also provided in the stripper through which the punch 14 passes. This allows the stripper to swing out of the way of the punch when the latter is being detached or attached to the plunger 13.

Vertical reciprocating movement may be imparted to the plunger 13 from a fly Wheel 26in any desired manner. As shown in the accompanying drawings the plunger '13 is pivotally connected as at 27 to a member 28 which is mounted on an eccentrically arranged reduced'end portion 29 of a shaft 30. As the-shaft 30 revolves the eccentric end portion 29 imparts oscillating motion to the member 28 which in turn causes the plunger 13 to reciprocate.

The reduced end portion 29 may be mounted in anti-friction bearings 31 in the member 28 and the shaft 30 may be mounted in antifriotion bearings 32 in the frame 11. The fly wheel 26 and the shaft 30 are shown as connected through the medium of a punch press trip 33 which may be of any desired 7 standard form. For actuating the trip pin 34 of the trip mechanism 33 I have shown in Figs. 1 and 3 a foot lever 35 pivoted to the base 12 and connected to the pin 34 by a 'cord 36. The free end of the foot lever 35 is shown as resiliently supported'by a coiled spring 36 attached thereto and anchored to the base 12. The fly wheel 26 is shown as driven by a belt 37 from a pulley 38 on the shaft of a motor 39.

The motor 39 is supported by a bracket 40 to which it is pivotally secured by a stud 41 and anut 42 (see Figs. 10 and 14). For retaining the motor 39 in an adjusted position relative to the bracket 40 I have shown a" pair 49 is supported by the bracket 40 and is provided with a crank arm 50 for rotating the same and turning the pinion 48 to cause the bracket 40 to move either up or down the rod 46. For retaining the bracket 40 at the desired height I provide a ratchet wheel 51 secured to the shaft 49 and engaged by a spring pressed pawl 52 which prevents movement of the ratchet wheel 51 in the direction to cause the bracket to be lowered, until it is moved out of engagement with the ratchet wheel.

With this construction the motor 39 may be raised to tighten the belt 37 or adjusted to Various heights to compensate for the clifference in sizes of my quick change pulleys which will be more fully explainedhereinafter.

The rod 46 is preferably rotatably mounted in a bearing 53 integral with the frame 11. This allows the motor 39 to have horizontal movement about the axis of the rod 46 for a purpose to be hereinafter more fully explained. For retaining the motor in an adjusted horizontal position I provide a novel form of latch mechanism indicated generally at 54' and shown in detail in Fig. 13.

This latch mechanism comprises a pair of arms 55 pivotally supported on a member 56 and provided with apertures 57 through which a rod 58 passes. The member 56 is pivotally connected as at 59 to a yoke 60 which is in turn supported and pivotally secured to the motor-39 by a screw 61. This mounting of the member 56 allows the arms to have a universal movement. The arms 55 are adapted to be normally urged apart by a coiled spring 62 arranged about'the rod 58. The end of the rod 58 farthest from the motor is provided with an eye 63 which fits around a reduced end portion 64 of a vertical rod65' supported in a bearing 66 integral with the frame 11. The rod 58 is supported by the shoulder at the juncture of the reduced end portion 64 and may be prevented from becoming displaced by a cotter pin 67 or in any other suitable manner.

Normally the edges of the apertures 57 in the pivoted arms 55'are caused to be wedged against the rod 58 by the coiled spring 63 and thus be immovable along the rod 58 thereby preventing horizontal movement of the motor 39.

To swing the motor 39 horizontally about the axis of the rod 46 it is only necessary to compress the pivoted arms 55 to the dotted line position shown 'in Fig. 13, and then the motor may-be moved to the desired position. Upon a release 'of the arms 55they will again grasp the rod 58' and retain the motor in a fixed horizontal position.

For supporting the material to be operated upon by the punch I provide a work support or table 68. This work support or table 68 is supported by a parallel link means through the medium of which the table 68 may be moved to any desired position and yet retain the parallel relation to the punch machine. This parallel link means comprises a pair of arms 69 each of which have pivotal engagement with one of a pair of spaced trunnions 70 secured to the table 68 (see Fig. 15).

Anti-friction bearings 71 are preierably provided for ease of operation and durability. The arms 69 are pivotally connected as at 72 to an annulus 73 which is supported by a pair of arms 74 with which it has pivotal en gagementas at 75.

The arms 74 are pivotally mounted on a pair of spindles 76 (see 4) which are mounted in bearings integral with the base 12. Anti-friction bearings may be provided at the pivotal points 72, and 7 6. for durability and ease of operation. The ends of the arms 7 1 adjacent the pivotal. points 75 may be sup ported by a ball 77 (Fig. 2) in a groove 78 of the arms and adapted to operate in other grooves 79 in a track 80 (see Figs. 2 and 1). Qn the smaller machines of this class it is not necessary to support the outer ends of the arms 74 andtherefore the track 79 and its component parts may be eliminated.

A piece of work 81 which is to be operated upon by the punch is shown as secured to the table 68 by a plurality of hand clamps 82 and a pattern 83 of the design to be punched in the work 81 is also shown as secured to the table 68 by the clamps 82. Any suitable manner of securing the work and the pattern to the table 68 may be employed to meet various requirements.

For moving the work 81 below the punch in accordance with the design of the pattern I provide an indicator 8& loosely mounted ina hollow stem 85 of which is supported by a rod 86. The rod 86 is reciprocatably and rotatably mounted in bearings 87 integral with the frame 11 and is adapted to be retained in a fixed position by a hand clamp 88.

. As both the work 81 and the pattern 83 are clamped to the table 68 the work will be moved beneath the punch when the pattern is shifted beneath the indicator 8 1 in accordance with the design of the pattern. Vhen the work and the pattern are both clamped to the table A 68 the design punched in the work will be I 1dent1cal in size to the design on the pattern.

For the purpose of punching the design in the work on a larger or smaller scale than the size of the design on the pattern I have provided a scale changing device shown as a ,pantograph i'nachine 89 in Fig. 0.

7 This pantograph machine 89 is of the usual type having a tracer arm 90 pivotally and directly connected to an operating arm 91 and further connected to the operating arm 91 through the medium of an adjustable link 98 and a i link 93.

The link 93 is dovetailed and is sli'dable within dovetailed groove in a membert e which is pivotally secured to the base 12. The link 93 is adapted to be clamped in fixed relationship relative to the member 94 by a set screw 95. Anti-friction bearings 96 may be provided for the member 9 1 to pivot on as shown in Big. 17.

The link 93 has pivotally secured to one of its ends a member 97 similar to the member 9%, having therein a dovetailed groove within which the dovetailed sides of the operating arm 91are slidably mounted. The member 97 is shown as adapted to be retained in a fixed position along the arm 91 by a set screw 98. The arm 91 is shown as detachably secured to one of the trunnions 70 of the table 68. As shown in 15 and 16 the arm 91 is provided with a pair of members 99 and 100 pivoted thereto at 101. The members 99 and 100 are adapted to surround an antifriction bearing 102 on the trunnion 70 and be secured together by a bolt 103 and a nut 10%. With this construction the pantograph machine 69 may be readily attached to and detached from the work table 68 of my device.

When the pantograph machine 89 is used the work 81 is clamped to the movable table 68 as previously described, while the pattern 88 is secured to a stationary table 104. As the indicator 1041 on the tracer arm 90 is moved to follow the design of the pattern 83 the work table 68 will be moved accordingly, hereby moving the work thereupon below the punch along the same lines as the lines of the design and cause the design to be punched in the work either on a smaller or larger scale, depending on the set given to the pantograph arms.

I may also provide my improved device with a rotatable spindle 105 which may be used either for drilling or milling. The spindle 105 is adapted to rotate by means of a spline 106 a sleeve 107 to which a tool holding chuck 108 is secured. The sleeve 107 is mounted in and supported by antifriction bearings 109 in a reciprocatable sleeve 110. The sleeve 110 is mounted in a bearing 111 of a bracket 112 integral with the frame 11 and is prevented from turning by a pin 113 which works in a groove 11% of the sleeve. The sleeve 110 is provided with gear teeth 115 and is adapted to be reciprocated by a pinion 116 in mesh with the gear teeth 115. The pinion 116 is secured to a shaft 117 having a handle 118 thereon by which it may beturned to rotate the pinion 116. For normally retaining the sleeve 110 in a raised position I provide a. coiled spring 119.

When milling out a piece of work the lat ter may be clamped to the table 68 and the When milling work isthus set the work will be moved heneaththe milling cutter along the same lines as the design of the pattern. For milling or drilling a stationary piece of work I provide a bracket 120 (see Fig. 3) secured to the frame 11 below the rotatable spindle 105.

For rotating the spindle 105 I provide on the upper end thereof a pulley 121 which may be identical with the pulley 38 on the motor shaft. To rotate the spindle 105 the motor 39 is swung on its pivot 41 from the position shown in Fig. 1 to the position shown in Fig. 3 and a belt 122 is run from the motor to the pulley 121 to rotate the same.

For changing the speed at which either the punch or the spindle 105 is operated I provide a plurality of various sized pulleys 123 preferably of the construction shown in Fig. 18. The hubs of these pulleys 123 are all bored to fit over the belt carrying portion of either the pulleys 38 or 121. These pulleys 123 are adapted to be secured to the pulleys 38 or 123 by a novel form of set screws 124. Vith a set of pulleys of this type a great variety of speeds may be obtained and they are quickly attached and detached.

Although I have shown and'described certain minor details in the construction of my device I wish it to be understood that the details of construction may be varied to suit various requirements within the scope of my invention.

From the foregoing description it will be apparent that I have provided a device 1ncluding many new and novel features which is simple in construction, sturdy and efficient in operation.

What I claim is:

1. In combination with a device having a vertical reciprocatable plunger, a fly wheel for drivin said plunger, a rotatable spindle, means to cfrive said fly wheel, said means being also adapted to rotate said spindle, said drive means including an electric motor, a bracket, means to pivotally mount said motor on said bracket, means to mount said bracket for vertical movement, means to retain said motor in a fixed relationship to said bracket when the motor is moved on its pivot, means to vertically move said bracket and means to retain said bracket in adjusted position.

2. A machine including a tool holder, means to drive said tool holder, a movable table adapted to support work to be operated upon by said tool holder, an indicator, and means whereby when a piece of work and a pattern are secured to said table and said table is moved to cause said pattern to move relative to said indicator said work will be correspondingly moved relative to said tool holder.,

3. A machine including a reciprocatable tool holder and a rotatable tool holder, means to drive said reciprocatable tool holder and said rotatable tool holder, amovable table adapted to support work to be operated upon by either of said tool holders, an indicator, and means whereby when a piece of work and a pattern are secured to said table and said table is moved to cause said pattern to move relative to said indicator said work will be correspondingly moved relative to either of said tool holders.

41:. A machine including a frame, a tool holder on said frame, a tool in said holder,

.caused to correspondingly move relative to said tool carried by said tool holder.

5; A machine including a frame, a tool holder on the frame, a motor, means to drive said tool holder from said motor, means to support said motor for vertical movement and for adjustment about a horizontal axis, a movable work table, means to support said table, said means including a pair of spaced parallel arms, said table and said arms being pivotally connected, an element pivotally connected to said pair of arms, a second pair of spaced apart arms pivotally connected to said element, said second pair of arms being supported by said frame and pivotally connected thereto, an indicator adjacent to said table to register with a pattern on said table whereby when said table ismoved to cause said pattern to move relative to the indicator the work secured to said table will be caused to correspondingly move relative to said tool carried by said tool holder.

6. A machine including a frame, a reciprocatable plunger associated with said frame, means on said plunger for securing a tool thereto, means for reciprocating said plunger, a movable work table, a pair of spaced parallel arms supporting said table and pivotally connected thereto, an element pivotally connected to said arms, a second pair of spaced arms and pivotally connected to said element said second pair of arms being pivotally connected to said frame, a bar supported on said frame, said bar being movably mounted, means for retaining said bar in a fixed position relative to said bearings, an indicator supported adjacent one end of said bar, said indicator adapted to register with a pattern secured to said table whereby when said table is moved to cause said pattern to move relative .to said indicator the work secured to said table willbecaused to correspondingly move relative to said tool carried by said reciprocatable plunger.

7 A machine including a frame, a tool holder, a motor, means to drive said tool holder from said motor, a vertical rod rotatable on said frame, a bracket adjustable on said rod, means to mount said motor on said bracket for movement about a horizon tal axis, means for retaining said motor in ri id relationship to said bracket, means to normally prevent movement of said motor about the axis of said vertical rod said means being releasable to allow such movement of said motor, a movable work table, means to support said table said means including a pair of spaced apart parallel arms, said table and said arms bein pivotally connected, an element pivotally connected to said pair of arms, asecond pair of spaced apart arms pivotally connected to said element, said second pair of arms being supported by said frame and pivotally connected thereto, an indicator adjacent to said table to register with a pattern on said table whereby when said table is moved to cause said pattern to move relative to said indicator the work secured to said table will be caused to correspondingly move relative to said tool carried by'said tool holder.

8. A machine including a frame, a tool holder associated with said frame, a motor, means to drive said tool holder from said motor, a bearing on said frame, a vertical rod in said bearing, a bracket on said rod, means to mount said motor on said bracket for movement about a horizontal axis, means for retaining said motor in rigid relationship to said bracket, a second vertical rod rigidly supported by said frame, a horizontal rod supported at one end on said second rod, means on said motor engaging said horizon tal rod adjacent its other end, means to normally tightly engage said rod to prevent movement of said motor about the axis of said vertical rod said means being releasable to allow such movement of said motor, said means at all times allowing said motor to swing about its said horizontal pivotal axis on said bracket, a movable work table, means to support said table said means including a pair of spaced apart parallel arms, said table and saidarms being pivotally connected, an element pivotally connected to said pair of arms,'a second pair of arms being supported by said frame and pivotally connected thereto. l

9. A machine including a frame, a tool holder, a motor, means to drive said tool holder from said motor, a vertical rod on said frame, a. bracket adjustable on said rod, means to hold said bracket in adjusted position on said rod, means to mount said motor on said bracket for v movement about a horizontal axis, means for retaining said motor in rigid relationship to said bracket, a second vertical rod rigidly supported on said frame, a horizontal rod supported at one end on said second rod, means on said motor adjustably engaging said horizontal rod to prevent movement of said motor about the axis of said vertical rod, a movable work table, means to support said table said means including a pair of spaced apart parallel arms, said table and said arms being pivotally connected, an element pivotally connected to said pair of arms, a second pair of spaced apart arms pivotally connected to said element, said second pair of arms being supported by said frame and pivotally connected thereto, an indicator supported adjacent-to said stool holder, said indicator adapted to register with a pattern secured to said table whereby when said table is moved to cause said pattern to move relative to said indicator the work secured to said table will be caused to correspondingly move relative to a tool carried by said tool holder.

10. A machine including a frame, a reciprocatable plunger associated with said frame, means on said plunger for removably securing a tool thereto, a rotatable shaft supported by said frame, means connecting said shaft and saidreciprocatable plunger whereby upon the rotation of said shaft said plunger will be reciprocated, a fly wheel adapted to drive said shaft, clutch means between said shaft and said fly wheel and means to actuate said clutch, a motor, a ulley on the shaft of said motor, means to cli ivesaid fly wheel from said pulley, a bearing on said frame, a vertical rod in said bearing, a bracket on said rod for supporting said motor, means to mount said motor on said bracket, for movement about a horizontal axis, means for retaining said motor in rigid relationship to said bracket, said rod having a rack thereon, a gear secured to a shaft supported by said bracket, said rack and'said gear being in engagement, means for rotating said gear shaft, releasable means on said shaft coacting with means on said bracket for normally preventing rotation of said shaft in one direction, a second vertical rod rigidly supported by said frame, a horizontal rod supported at one end on said second rod, means on said motor engaging said horizontal rod adjacent its other end, said last mentioned means being adapted to normally'tightly engage said rod to prevent movement of said motor about the axis of said vertical rod, said means being releasable to allow such inovement of said motor, said means at all times allowing said motor to swing about its horizontal pivotal axis on said bracket, a movable work .table, means to support said table said means including a pair of spaced apart parallelarms, said table and said arms being pivotally connected, an element pivotally connectedto said pair of arms, a second pair of spaced apart arms pivotallyconnected to said element, said second pair of arms being supported by said frame and pivotally connected thereto, a horizontal bar supported in bearings integral with said frame, said bar being mounted for rotation and horizontal reciprocation in said bearings, means for retaining said bar in a fixed position relative to said bearings, an indicator supported adjacent one end of said bar, said indicator adapted to register with a pattern secured to said table whereby when said table is moved to cause said pattern to move relative to said indicator the work secured to said table will be caused to correspondingly move relative to said tool carried by said reciprocatable plunger.

11. In combination with a punch press including a frame and a vertical reciprocatable punch member, a stripper adjacent said punch member, said stripper including a horizontal foothaving an a Jerture therein through which said punch ember passes, said stripper being mounted for pivotal movement about a horizontal axis and means to retain said stripper in a fixed position.

12. In combination with a punch press including a frame and a vertical reciprocatable punch member, a stripper adjacent said punch member, said stripper including a horizontal foot and a vertical portion, said foot having an aperture therein through which said punch member may pass, said vertical portion be ing pivotally secured to said frame and adapted' to be swung about a horizontal pivot, and means whereby said stripper may be vertically adjusted. v

' 13. In combination with a stationary frame a movable tool holding means supported by the stationary frame, a movable table adapted to support work to be operated upon by a tool associated with said tool holding means, a pair of spaced parallel arms supporting said table and an element pivotally connected to said arms, a second pair of spaced arms pivotally connected adjacent one of their ends to said element and said second pair of arms pivotally secured adjacent their other ends to said stationary frame, and means for supporting said second pair of arms adjacent their conenction to said element, said means comprising tracks supported by said frame, a groove in each track and a groove in each of saidsecond arms and a movable member in each of said grooves in said arms and adapted to move in a groove in one track.

I 14 In combination with a metal working machine including a frame, a motor arranged to drive said machine and supported by said frame, said motor being movable horizontally and means to retain said motor in an adjusted horizontal position, said means comprising a bracket pivotally mounted on said motor, another bracket pivotally mounted on said first mentioned bracket, a pair of spaced arms pivotally mounted on said second bracket, each of said arms having an aperture therethrough, a horizontal rod passing through said apertures in said arms and resilient means normally urging said arms apart to cause the edges of said apertures to grip said rod and prevent horizontal movement of said motor, said arms upon a movement towards each other being adapted to release their grip on said rod whereby said motor may be moved horizontally, said rod supported at one end by an element supported by said frame, and said rod being movable relative to said element.

15. Incombination witha metal working machine, a support, a tool holding member on said support, a motor for driving said tool holding member, means to drive said member from said motor, said means including spaced pulleys, and a series of various sizedinterchangeable auxiliary pulleys adapted to fit on said first pulleys to vary the speed of the driven member, a single one of said auxiliary pulleys including a belt carrying portion and a central aperture, said central aperture being of a size to fit over the belt carrying portion of either said first mentioned pulleys or said auxiliary pulleys and meansto hold said auxiliary pulleys in place. 7 V

16. In combination with a metal working machine, a support, a reciprocatable tool holding means and a rotatable tool holding means on said support, a common drive means for said reciprocatable toolholder and said rotatable tool holder, said common drive means comprising an electric motor having a pulley on the drive shaft thereof, a fly wheel for driving said reciprocatable tool holder adapted to be driven from said pulley on said motor shaft, a second shaft adapted to drive said rotatable tool holder and a pulley on said second shaft driven from said motor shaft, the belt carrying portion of said first mentioned pulley and said second mentioned pul-, ley being of the same diameter, a series of interchangeable auxiliary pulleys adapted to fit on the belt carrying portion of each of said first mentioned or said second mentioned pulleys to Vary the speed of the driven member, a single one of said auxiliary pulleys including a belt carrying portion and a central aperture, said central aperture being of a size to fit over the belt carrying portion of either said first mentioned pulley or said second mentioned pulley, a screw threaded bore in said auxiliary pulley communicating with said central bore, a screw threaded spindle in said screw threaded bore and an annulus on said spindle by which said spindle is adapted to be rotated, said annulus extending out from either side of the body portion of; said pulley intermediate said belt carrying portion and said central'bore.

17. In combination with a device including a vertical reciprocatable plunger having a tool holder associated therewith, a fly wheel, means connecting said fly wheel and plunger to reciprocate the latter, a vertical rotatable spindle having a tool holder associated therewith, means to rotate said spindle, a motor mounted for swinging movement to either of two positions, means to drive said fly wheel from the motor when the motor is in one position, and means to rotate said spindle from the motor when in another position.

18. In a metal working machine, a reciprocatable tool holding means, a rotatable tool holding means associated with said first means, a common means to drive said reciprocatable tool holder and said rotatable tool holder, a work table for supporting work to I be operated upon by either of said tool holding means, a parallel link construction for movably supporting said table whereby said table may be moved relative to either of said tool holding means and still retain its same relative relationship to both of said tool holding means, an indicator means whereby when a piece of work and a pattern are secured to said table and said table is moved to cause said pattern to move relative to said indicator said work will be correspondingly moved relative to each of said tool holding means.

In testimony whereof, I hereunto aflix my signature.

STEAD A. ASQUITH.

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