US1241256A

US1241256A - Metal-working machine.

Info

Publication number: US1241256A
Authority: US
Inventors: Louis A Hawthorne
Original assignee: STEEL UTILITIES Inc
Current assignee: STEEL UTILITIES Inc
Priority date: 1914-05-16
Filing date: 1914-05-16
Publication date: 1917-09-25
Anticipated expiration: 1934-09-25

Description

L. A. HAWTHORNE.

METAL WORKING MACHINE.

APPLICATION FILED MAY I6. I9I4.

Iafened Sept. 25, 191?.

3 SHEETS-SHEET I.

n O Irlll A TTORVEY@ L. A. HAWTHORNE.

METAL WORKING MACHINE.

APPLICATION man MA1/16.1914.

Patented Sept. 25, 191?.

3 SHEETS-SHEET 2.

L. A. HAWTHORNE.

METAL WORKNG MACHINE.

APPLICATION HLED MAY|6.1914.

Patented Sept. 25, 1917.

3 SHEETS-SHEET 3.

UNTTE@ STATES PATENT FFTCE.

LOUIS A. HAWTHORNE, 0F NEWARK, NEIN JERSEY, ASSIGNOR TO STEEL UTILITIES,

INCORPORATED, A CORPORATION OF NEW YORK.

METAL-WORKING MACHINE.

Application led May 16, 1914.

To all whom t may concern:

Be it known that l, Louis A.. HAWTHORNE,

a citizen of the United States, residing at Newark, N. J., have made certain new and useful Improvements in Metal-Working Machines, of which the following is a specication.

T he invention relates to machines for punching structural shapes and other work, and in certain of its aspects the invention relates to the punching of shape flanges and like work. Various objects and advantages of the invention will be set forth in part hereinafter, and in part will be obvious herefrom, or may be learned by practice with the invention.

The invention consists in the novel parts, constructions, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and forming a part hereof illustrate one embodiment of the invention, and together with the description serve to explain the principles thereof.

Of the drawings: l

Figure 1 is a side elevation, with parts broken away and with parts in section, of a machine embodying the invention;

Fig. 2 is a top plan of the machine of Fig. 1, with parts of the casing broken away;

Fig. 3 is a section on the line A-B of Fig. 2, looking in the direction of the ar-y rows, with parts omitted;

Fig. 4 is a vertical section on the line C-D of Fig. 1 looking in the direction of the arrows.

Fig. 5 is a horizontal section on the line G-M of Fig. 3 looking in the direction of the arrows.

Fig. 6 is a vertical section on the line E-F of Fig. 1 looking in the direction of the arrows;

Fig. 7 is a fragmentary sectional view on an enlarged scale of the lower central partv of Fig. 6;

Fig. 8 is a bottom plan in detail of the adjusting nut of Fig. 7; p

Fig. 9 is a detail elevation of the punch actuating lever arm;

Fig. 10 is a detail of the die blocks;

Fig. 11 is a sectional detail on an enlarged scale of the lower central part of Fig. 1, showing the springs under compression; and

Fig. 12 is a similar view to Fig. 11, but

Specification of Letters Patent.

Patented Sept. 25, 1917.

serial No. 838,954..

showing the springs extended and the frame at its stop.

Referring by way of example to the illustrated embodiment of the invention, and in accordance with certain features of the invention, it is especially adapted and designed to punch beam flanges, and as embodied the machine is shown especially adapted to punch simultaneously, and symmetrically both ianges of an I-beam. The beam is run through the machine, and stopped from time to time and after the desired amount of travel, to be punched in the proper and desired positions for the rivet holes, to be used in fabrication.

So far as concerns many features of the invention, any desired form of traveling and stopping means may be utilized. As embodied, said means comprise devices for impellng the beam or shape forward, said devices acting either continuously or intermittently, in cooperation and conjunction with distance determining devices, manually settable or automatically controlled from a distance record sheet, there being connections from the distance determining means to the beam or shape whereby it is successively permitted to travel distances corresponding to the successive settings of the distance determining devices.

The beam or shape a; rests upon driven rolls 1, driven either continuously or intermittently in harmony with the successive settings of the distance determining means and the successive punchings of the beam. The forward end of the beam abuts upon a head 2 (Figs. 1 and 9.), which head is attached to a long bar or rail 3 extending horizontally backwardly along the shape ac. The rail 3 is connected to the distance determining means, not shown herein, but which may be substantially like that shown and described in copending application Serial No. 814,380, filed January 26, 1914, or in coe pending application Serial No. 842,231, led June 1, 1914', and need not be shown and described in detail herein.

In accordance with certain features of the invention, means are provided for clamping or firmly holding the beam iianges for punching and alternately freeing them to be fed forward between the succesive punches, and in connection therewith means for simultaneously punching both anges of the beam, and making such punching symmetrical, with a single punch or a plurality thereof on each side, and in accordance with one feature 4`of the invention single actuating means for operating the punches for lboth flanges are provided.

The embodied form of actuating means comprises devices for operating the punch after the shape 'has been brought to rest and for preventing another operation thereof until the shape has been traveled and stopped for the successive punching operations thereon. Suitable driving means, vsuch as an electric motor, are connected lto a shaft .10 having journals 11 in the machine frame, said shaft carrying a Vfly-wheel 112. vvFixed to shaft 1G is a pinion 13 in mesh with a vgear 14. The gear 14 is loosely sleeved upon a shaft 15 having journals 16 carried upon the machine frame. Fixed to the gear v14 is a clutch member 17. rlhe correspondv.ing or coperating clutch member 18 fis splined'to the shaft 15, and is iinpelled into engagement with the cooperating 'clutch member 17 by a spring 19 in compression between clutch member 18and a suitable head or washer '20. ln the external face iof the member 18 is a cam groove 21, in which works a cam finger 22. The cam finger or pin 22 connectsto the core of a solenoid :23. A spring k24 acts to press the cam pin22into thefgroove '21, the solenoid when .energized acting `against the springf24 to retract the finger or pin 22 out of the groove 21. :Formed in shaft 15 `between .its journal bearings 16 is a double crank 25 having Va connecting rod A26. Said connecting irod is pivotally connected to a wrist pin 27, 'which wrist pin is mounted in a lever arm 128. Said lever `arm l28 has pivotal mounting as by supporting shaft 29 upon a sliding frame 30. Said frame-30 is slidable in yguides32 upon the 'bed plate 31, and movable to and from 'a positioning stop 33 upon the -bed plate, with which stop a piece 34 on -the frame 30 contacts.

Slidably mounted in the frame30 isfa xreciprocable head l36 reciprocably mounted in

guides

37 and 38 formed in each side'ofl'the vertical walls of the slidable frame 30. Pivotally connected to the rear part of thereciprocable head 36, by means of a pivot Ipin 39, is a flat connecting rod or plate 40, having a bearing head 41 mounted in a socket 42 inthe upper end of the lever 28. The

punches

43 and 47 for one of the 'beam flanges are operated bythe head 36, andthe punches are relatively movable with respect to each other for the purpose of punching beams of different sizes, their movements for this'purpose in the present arrangement hing to and fro vertically, this being effected bv means'hereina fter to beldescribed. Thepunch 43 is reciprocably mounted in y'a ed to receive-the Vlower portion of the beam flange, and is shaped to accommodate between it and carrier 44the horizontally eX- tended 'web-of the beam. Carrier 48'iisf-likej wise 'vertically movable on guides 54.1onathe frame30.4

The fupper carrier 44 iis formed with la downwardly projecting portion 50 adapted to come within the beam flange and to lbe pressed 'firmly thereagainst during the punching. The die .51 for the punch V43 is formed lin the part 50 of the block. or carrier 44. The block or carrier 48 has a similar part '52 extending upwardly and behind the other part of the ybeam flange, Iand adapted to press thereagainst during the punching, said part 52 carrying the die-53 for the punch 47. v

The blocksor punch supports 44 land 48, as stated, are both movable-to and fro vertically on guides 54,l andare so -inovable 'relatively to -each other by. means hereinafter to be :described to properly position 'the punches for beams of dierent sizes and also for-the purpose of symmetrically locating the4 punches on both 'sides with respect to the web of the beam or shape.

Thepunches are detachably mounted `with respect tothe head 36, and as embodied the heads 42 'of the

punches

43 and 47 are flocated in a recess vformed partly in the :forward end oftheihead 36,*and formed partly within `a detachable holder 61, having a tongue and groove sliding yconnection 62 with the forward end ofthe head 36, and being held to position by suitable means such asa tap bolt or lag bolt 63.

Means are provided by the invention for selectively operating. one or more'of the punches, and as embodied herein, gags 64 cores of solenoids 67,1electrically controlled from the distance recordsheet. Springs 68 serve to restore'the gags when the solenoids 67vare denergized.

In accordance with certain features of'the invention,means are provided for simultaneously punching both flanges of the beam, and in the embodied form of such means, there is provided a sliding frame 80, carried in guides 81 upon the bed plates 31 of the machine.

Mounted reciprocably upon said sliding frame 80 is a reciprocable head 82, carrying

punches

83 and 84 for punching the opposite flange of the shape or beam The connections for operating togetherfthe heads 36 and 82 comprise a longitudinally sliding rod 85, said rod 85 being mounted upon supporting

blocks

86 and 87, on the bed plate of the machine.

Blocks

86 and 87 reciprocate, respectively, on

guide ways

88 and 89 formed in the bed plate. Extending from the block 86 are pivot pins 90 and 91, pivotally mounted on which pins are

blocks

92 and 93. The lower portion of the lever arm 28, below the wrist pin 27 is bifurcated into parts 94C and 95, each of said parts being yoked or recessed to straddle and engage the pivoted blocks 92 and 93.

On the opposite side of the machine, a lever arm 100 has its lower end 101 bifurcated and yoked similarly to the lower end of lever arm 28, to embrace and engage blocks 102, pivotally mounted on pins 103 carried by sliding block 87 (near the right hand end of rod 85 in Fig. 1).

Arm or lever 100 has a pivotal bearing on pin or shaft 104:, which is mounted on the slidable frame 80. A, link 105, similar to link 40, is pivotally connected to reciprocable head 82 and has a pivotal soclret connection with arm 100. The head 82 carries two punches 106 and 107, which are mounted in the same way, and have the same movements and relative movements as the punches L13 and 47, and therefore need not be described in detail. The punches 106 and 107 are reciprocably mounted, respectively, in

carriers

108 and 109. Said

carriers

108 and 109 work on vertical guides on frame 80, similar to the guides 54; on frame 30. Said carriers are movable to and fro vertically on said guides, and also are vertically movable relatively to each other to get the right amount of separation between the punches 106 and 107, and also to get both punches at the right height for beams or shapes of different sizes.

rllhe block 108 has a recess for the upper` half of the beam liange, as appears from Fig, 1, and it has a part 110 extending downwardly behind the beam fla-nge, and adapted to press tightly against the inner face of the flange during the punching operation. The block 109 is similarly recessed to receive the lower part of the beam or shape flange. The bloclr 109 has a part 111L extending upwardly behind the lower part of the beam flange, and likewise adapted to press against the inner face of the flange during the punching operation. rlhe parts 110 and 111 have dies therein, and suitable discharging ducts for the punchings as shown in F ig. 10.

Means are provided by the invention for increasing and decreasing the space or cegree of separation between the punches and dies for one flange of the beam and those for the other flange, to accommodate beams of different sizes. As embodied, the shaft 85 is made rotatable for this purpose, and by such rotation the slidable frames 30 and 80 are drawn together for smaller beams or are moved apart for larger beams. The shaft 85 has also, in the present embodiment, reciprocatory longitudinal movement during the punching operation to bring the die blocks up tight against the inside of the flanges of the beam. Encircling shaft 85, medially of its length, is a sleeve 120, splined to rotate with shaft 85 but permitting relative slidablemovement of the sleeve 120 and shaft 85. The sleeve 120 has on its exterior a screw thread 121 and encircling the screw thread 121 is a nut 122. Fixed to nut 122 are apertured wings 123, and through the apertures pass rods 124-, said rods 124 being fixed to a support 126 on the machine frame. @n the ends of rods 124,- are nuts 127, and springs 128 are in compression between the wings 123'and nuts 127. Sleeve 120 has an annular groove 130, with which groove engages a flange 131 fixed to slidable frame 80.

The end of the shaft 85 is held against longitudinal movement relatively to the sliding block 86, at the left in Fig. 1, by collars 112 and 113 fixed to the shaft at either side of the block. The slidable block 87 (at the right in Fig. 1) is apertured internally longitudinally thereof, said aperture being screw threaded to engage an external screw thread 114C on that portion of shaft 85. The shaft 85 has a journal bearing 132 at the right hand end in Fig. 1, and is thus rotatably journaled in bearing 132 and in the slidable blocks 86 and 87. Suitable means are provided for rotating the shaft 85, such as a hand wheel 133, although this could be effected automatically from a distance record sheet, or by other suitable means.

rlhe manner of operation of the mechanism so far described, is` substantially as follows ylfhe beam or shaper ai is traveled and stopped in accordance with the setting of the distance determining means, or bythe indications of the distance record sheet, or in other suitable manner so far as concerns many aspects of the invention. Vlhe clutch 17, 18 is released by the withdrawal of pin 22, by the solenoid 23 or otherwise. rlhis permits the shaft 1.5 to make one rotation,

the inside of the other flange.

as the retracted ypin 22 is.- released to enter the broad part of groove 21 and cam the rotating clutch member 18 against its spring and to hold it out until the pin 22 is again retracted.

When the shaft 15 begins to rotate, the arm 28 is rocked about 29 to bring the

punches

43 and 47 against the beam flange (Fig. 1) vand the shaft 85 is moved slightly to the left (Fig. 1) to rock arm 100 about 104 to bring the punches 106 and 107 against 1 the other flange. As the shaft 15 continues `its rotation, arm 28 rocks next about its A which later expand 'to restore the clearance between the beam flange and the die blocks 110 and 111.

The die blocks pressing firmly on the inside of the flanges stop the movement of

frames

30 and 80, and the

arms

28 and 100 again pivot, respectively about 29 and 104, and the

heads

36 and 82 are forced forward driving the punches through the flanges. As the shaft 15 continues to rotate, the punches are withdrawn, the

frames

30 and 80 move toward the center, easing the die blocks away from the flanges and leaving the beam free to be fed forward andto be positioned for the next punching. The springs 128 serve to move frame 80 and'ease its die blocks away from the inner flange of the beam.

Means are provided by the invention for automatically centering the punches for shapes of different sizes, so as to bring the openings in and between the die blocks or die carriers into alinement with the flanges and web of the beam or shape as it is fed in and traveled along upon the rollers 1. In accordance with one feature of the invention, the die blocks are automatically positioned by the fed in shape. In the embodied form, a shoe 140, has its end turned or flared upwardly in the direction of the approaching beam, as shown in Fig. 4. The shoe 140 is slidable to and fro vertically in guides 141 and 142 on the machine frame. Extending upwardly from the shoe 140 is a rod 143, pivotally connected at 147 to a lever 144. Lever 144 is pivotally supported at 146 within a double bracket 145 upon theVV top ofthe sliding frame30. Midwaybetween pivotpoints 146 and 147 is a pivotal support tical movement of said rod 149 will be one half that of the shoe 140, when the shoe is moved by engagement with the edge of the flange of a beam or shape. Thus the horizontal opening between the support 44 for' the upper punch and die and the support 48 for the lowerpunch and die will be correctly positioned to receive the web of the beam and to give the proper desired position of the holes in the flange.

Means are provided by the invention for simultaneously positioning the punch and die blocks for'both'flanges of the beam, and as embodied, a similar mechanism is provided for the other side of the machine,and it is operated simultaneously from the shoe 140. For this purpose, as embodied, a square shaft 150 is fixed to lever 144 at its pivotal bearing 146, said shaft 150 extending-horizontally and having a sleeved or bushed bearing in a bracket 151 mounted on'the top of the sliding frame 80. The bracket 151 is double, and between the two parts thereof is carried lever 152, like lever 144 by a pivotal bearing 153. The lever 152 is squared to lit shaft 150, while the lever and its lbracket 151 are slidable along shaft 150 with the sliding frame 80v to accommodate beams of varying size.

Pivotally supported from'lever 152 is a rod 154 distant from pivot point 158 by the same amount that pivot support for rod 149 is from the pivotal support 146 for llever y144. 'Supported on rod 154 are the

carriers

108 and 109 for the punches anddies for the opposite flange of the beam, already described as being vertically slidable in guides on sliding frame 80. Thus, these punches and dies are likewise centered from shoe 140 for the horizontally disposed web of the beam, as the

levers

144 and 152 will rock together, while lever 152 is at the same time movable longitudinally of the shaft 150 with the frame 80. The lever arms 14,4'and k152 extend backwardly from their pivot points to support counterweights 156 for balancing lthe weight of the punch and die carriers 44,

48, 108 and 109, 'thereby rendering the up and down movement thereof easier.

Means are provided by the invention for increasing or decreasing the distance between the punches. for a beam flange on one side of the web and those for said flange on the other side of the web. In practice the rivet holes are spaced apart variably with the differences in the width of the tread'of the flange. In the embodied form of such means, the rod 149 is screw threaded into the punch and die

carriers

44 and 48 by right and left handed screw threads, respectively, as shown in Fig. 6, whereby when rod 149 is rotated the

carriers

44 and 48 are moved toward or apart from each other. F or this purpose rod 149 is rotatably supported in its pivotal support 148, as shown at the top of Fig. 4, the piece 148 being pivotally mounted in the lever 144, and the rod 149 having a rotatable bearing in the piece 148, and being held in position by a nut 170.

A like arrangement is provided for the rod 154, which likewise has right and left hand screw thread connection with the punch and die

carriers

108 and 109. The rod 154 has likewise rotatable mounting in its pivotal bearing, similar to the rod 149, all of which need not be further described in detail.

Means are provided for rotating said

rods

149 and 154 together, and as embodied each of said

rods

149 and 154 carries splined thereon respectively a pinion 174, mounted in a bracket 175, which brackets are carried upon the corresponding sliding

frame

30 or 80. The pinion 174 has either helical or worm teeth. A shaft 176 extends horizontally past the respective pinions 174, said shaft having bearings in the

brackets

145 and 151 and being also journaled in a bearing 177 carried by the slidable frame 80. Suitable means such as

collars

178 and 179 serve to keep the shaft 176 from longitudinal movement. The shaft 17 6 is square or splined to carry worm er gear wheels 180, which mesh with the pinions .174. Thus the gear wheels 180 remain in mesh with the pinions 174, to rotate the

rods

149 and 154 with the rotation of the shaft 176, while gears 180 and the shaft 176 are relatively slidable during the movements of the sliding frames and 80. Suitable means for rotating the shaft 176 are provided, shown herein as a hand Wheel 182', although so far as concerns many features of the invention, other means for controlling the rotation of the shaft 176 may be provided controlled from the setting of a distance determining device or from an automatic distance record sheet.

Means are provided by the invention for vertically moving or adjusting the lower punch and die

carriers

48 and 109 to regulato or vary the distance of the lowermost rivet hole from the bottom edge of the beam liange, said means cooperating with the means for adjusting or regulating the spacing apart of the rivet holes for either side of the beam web. As embodied (see Figs. 6, 7 and 8), the lower end of the

rods

149 and 154 extend into apertures 188 in the lower portion of the

carriers

48 and 109. rEhe lower end of said rods have square portions 184 tting within internally square sleeves 185. Said sleeves 185 are externally threaded as shown at 186. The thread 186 engages the internal or tapped thread of a nut 187' fixed in the lower part of the

respective carriers

48 and 109 by suitable means such as a set screw 188. Thus when the

rods

149 and 154 are rotated, the nuts 187 and the corresponding

carriers

48 and 109 travel upwardly and downwardly, as the sleeve 185 rests upon a seat 190 formed in the machine frame.

The manner of operation of the mechanisms shown and described will be clearly understood from the descriptions or statements of operation already given in connection with the various groups of mechanism, and further description will be unnecessary.

From all the foregoing it will be understood that a machine has been provided embodying and realizing the objects and advantages herein set forth, together with other objects and advantages. lt will also be understood that changes may be made from the mechanisms shown and described within the scope i of the accompanying plans, without departing from the principles of the invention and without sacricing its chief advantage.

What l claim as my invention and desire to secure by Letters Patent, is

1. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices.

2. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and connections between said levers.

8. A punchin machine including in combination a slida `le punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable' punch actuating devices mounted on said slidable frames, actuating levers pivoted upon said slidable frames and to said punch actuating devices and connections between said levers.

4. A punching machine including in com-l bination a slidable punchy and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating ylevers connected to said slidable frames and able punch actuating device, an actuating lever' pivoted at one of its ends to the other sliding frame and connected at a medial pointl to the corresponding movable punch actuating device. 4

6. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an

,opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted cn said slidable frames, an actuating lever pivoted to one of said'sliding frames at a medial point and connected at one of its ends tothe corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial point to the corresponding movable punch actuating device, and means for moving said levers together.

7. A punching machine including in combination a slidable punch and die'carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted'tovreceive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivotedv to one of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other slidingframeand connected'at a medial point to the corresponding movable punch actuating device and connections between the free ends of said'two levers.

8. A punching machine including in combination a slidable punch `and die carrying frame adapted to receive a beam flange, an

opposed punch and die carrying frame adapted to receive the other Harige of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and tolsaid punch actuating devices and common actuating means for said levers.

9; A punching machine-including in com-1 bination a, slidable punch` and-die carrying.

frame kadapted to receive Va beam flange, anv

opposed punch and'v die carrying frame adapted to receive theother flange of` the beam, movable punch actuating devices, mounted on said slidable frames, actuating levers pivoted upon saidslidable frames and to said punch actuatingdevices and commonv beam, movable punch actuating devices' mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point and connected at one of its ends tothe corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other slid-l ing frame and connected at a medial point to the corresponding movable punch actuating device and common actuating means for said levers.

11. A punching machine including in combination a slidable punch and ,die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable 'frames and to said punch actuating devices and a crank shaftfor actuating said levers.

12. A punching machinev including in combination a slidable punch and die carrying frame adapted to receive a beam flange` an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable Ypunch actuating devices mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point andy connected at one of its ends tothe corresponding movable punch actuating device, an actuating lever pivoted at one of its ends tothe other sliding frame and connected at a medial point to the corresponding movable punch actuating device, and a crank shaft for actuating said levers.

13. A punching machine including in combination a slidable punch and die carrying frame Aadapted to receive a .beami flange an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial point to the corresponding movable punch actuating device, a crank shaft for actuating said levers, and means for causing a single rotation of said crank shaft.

15. A punching machine including in combination a slidable punch and die' carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receivey the other flange of the bea-m, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and means for causing a single actuation of said levers.

16. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivoted to onev of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a lmedial point to the corresponding movable punch actuating device and means for causing a single actuation of said levers.

17. i punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and common actuating -means for said levers for imparting a single actuation to said punches.

18. A lpunching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial point to the corresponding movable punch actuating device, and common actuating means for said levers for imparting a single actuation to said punches.

19. A punching machine including in combination a slidable punch and die carryn ing frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices, a crank shaft for actuating said levers and connections betvveen the free ends of said levers.

20. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at amedial point to the corresponding movable punch actuating device, a crank shaft for actuating said levers and connections between the free ends of said levers.

21. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and means for successively traveling and stopping a beam relatively to the punching means.

A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to saidslidable frames and to said punch actuating devices and means for successively traveling and stopping a beam relatively to the punching means and means for automatically centering the flange receiving devices for beams of' different sizes. v

23. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted 0n Said slidable frames', actuating lli) levers connected to said slidable frames and to said punch actuating devices, means for successively traveling and stopping a beam relatively to the punching means and means y controlledy automatically by the beam for centering the liange receiving devices for beams of' different sizes.

Q4. A punching machine including in` combination a slidable punch and die carrying Vframe adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said lslidable frames, actuating levers connected to said slidable frames and to said punch actuating devices, means for successively traveling and stopping a beam relatively to the punchingmeans andv means for automatically centering the punches and dies for beams of different sizes.

25. A punching machine including vin combination a slidable punch and die carrying frame adapted to receive a beam flange an o osed unch and die carr ino'y frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, ac-

ating lever pivoted to one of said sliding frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial point to the corresponding movable punch actuating device, means for successively traveling and stopping a beam relatively-to the punching means andmeans controlled automatically by the beam Afor centering the punches and dies for beams of different sizes.

27.. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the. other ange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to Said slidable-frames and to said punchactuating devices means for supporting abeamto be punched and means beam, movable punch actuating devices mounted on said .slidable frames, actuating levers connected to said slidable frames and.' to said punch actuating devices, means con-y trolled by the size of the beam for supporting a beam to be punched and means for centering the flange receiving devices for beams of different sizes.

29. A punching machine including in combination a slidable punch and die carry-k ing frame adapted to receive a beamflange, an opposed punch and die carrying frame adapted to receive the other flange of the` beam, movable punch actuatingv devices' mounted on said slidable frames, an actuating lever pivotedv to one. of said sliding' frames at a medial point and connected at one of its ends to the corresponding movable punch actuating device, an actuating'l lever pivoted' atone of its ends to the other sliding frame and connected. at a medial point to the corresponding movable punch actuating device, means for. supporting a beam to be punched and means for centering the flange receiving devices for .beams ofy diEerent sizes.

30. A punching machineincluding in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange ofthe beam, vmovable ypunch actuating devices mounted on said slidable frames, actuating levers pivoted upon said slidable frames and to said punch actuating devices, means controlled by the size of the beam' for lsupporting a beam to be punched and means for centering thel flange receiving devices for beams of different sizes. f

3l. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange,

an opposedpunch and die carrying frame adapted'to receive the other flange of the beam, movable punch actuating devicesv mounted on said slidable frames, actuatin#r leversy pivoted upon said slidable frames and toA said punch actuating devices, means controlled automatically by the size of the beam for supporting a beam to be punched;

and means for centering the flange receiving devices for beams of different sizes.

`82. A punching machine includ-ing in combination a slidable punch and die carrying frame adapted'to receive, al beam flange,A

an opposed; punch; andi diecarlying; frame iis adapted to receive the other-:flange of the beam, movable punch actuatingr devices mounted kon said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices, means for supporting a beam to be punched and means for centering the punches and dies for beams of different sizes.

33. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other `flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuatingl devices, means controlled by the size of the beams for supporting a beam to be punched and means for centering` the punches and dies for beams of' different sizes. v

34. A punching machine including in combination a slidable punch and die carto receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable y:frames and to said punch actuating devices, means controlled automatically by the size ofthe beams for supporting a beam to be punched and means for centering the punches and dies for beamsv of different sizes.

35. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, an actuating lever pivoted to one of said sliding frames at a medial point-and connected at one of its ends to the corresponding movable punch actuating device, an 'actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial point to the corresponding movable punch actuating device, means for supporting a beam to be punched andmeans for centering the punches and dies forfbeams of different sizes.

36. A punching machine including in combination a slidable punch `and die carrying frame `adapted to receive a beam flange, an opposed punch'and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers pivoted upon said slidable frames andA to ysaid punch actuating devices, means controlled automatically by the size of the beams for supporting a beam to be punched and means for centering the punches and dies for beams of different sizes.

37. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam llange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames, and to said punch actuating devices and means for varying the distance betvveen said flange receiving devicesl for beams of different depth.

38. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted lon said slidable frames, actuating levers pivoted upon said slidable frames and to said punch actuating devices and means for varying the distance between said slidable frames for beams of dierent depth.

39. A punching machine including in .combination a slidable punch .find die carrying frame adapted to receive a beam flange, an opposed punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and commonactuating means for said levers and means for varying the distancev between said vflange receiving devices for beams of different depth.

40. A punching machine including in combination a slidable punch and die carrying frame adapted to receive a beam flange, an opposed punch and die carrying` frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected to said slidable frames and to said punch actuating devices and means for bringing the die members firmly against the backs of the flanges preparatory to punching.

41. A punching machine including in combination a slidable punch and ydie carrying frame adapted to receive a beam flange, an opposed'l punch and die carrying frame adapted to receive the other flange of the beam, movable punch actuating devices mounted on said slidable frames. an actuating` lever pivoted to one of said sliding frames at a medial point and connected at one of its ends tothe corresponding movable punch actuating device, an actuating lever pivoted at one of its ends to the other sliding frame and connected at a medial -pointlto the corresponding movable punch actuating device and means for bringing the 5*die l.members firmly .against the backs of, the flanges preparatory tOpunchinO. v

n l 42. L :A .punching machine includingin combination a slidable punch and die carrying frame adapted to receive a beamflange, `an opposed punch .and die carrying frame adapted to .receive the other flange ofI the beam, ,movable punch actuating ldevices mounted on saidslidable. frames,.actuating levers connected :to said slidable frames and to said punch actuating'devicesand common actuating means for said levers and means for bringing-the die .members firmly against the backs of the flanges.;l :preparatory to punching.- Y u 4 43. `punching 4machine .includingin l combination a 'slidable `punch anddie carrying frame adapted to receivev a beam lange,van opposed ,punch .andy die carrying vframe adapted to -receive the-other-flange of the beam, .movable-j A punch actuating devices mounted on: said. slidableframes, actuating levers .connected yto said slidable frames and to said punch actuating devicesyand meansnor st lccessively travelingand stoppingv a beam relatively to. the punching means and means for bringing the die .members firmlyagainst the backs ofthe fianges preparatorylto the successive punchings.-

44. A punching ymachine including in combination a slidable .punch zand-.die 'carrying frame adapted to receive a beam flange, anoppo-sed punch .and ,die carrying frame adapted to receivetheother `flange-.of the beam, movable punch actuating 'devices mounted von said slidable frames,. actuating levers pivoted upon said slidable:v frames and tosaid punch actuatingdevices andimeans `for successively traveling and stopping ya beam relatively to the punchingfmeanspand for moving/them away preparatory. tothe forward travelof the beam. Y i

.45.. A lpunching machine including y in combination a slidable punchand. .die carrying` frame adapted to receive a beamflange, an ,opposed punch and `die carryingl frame adapted to receive the other .flange .of the beam, movable punch actuating devices mounted on said slidable frames, actuating levers connected tosaid slidable frames and to said punch actuating .devices and..means for successively traveling-and .stopping .a beamfrelatively tol the punchingm'eans and means for,V automatically .centering the flange receiving devices for beams of di'i'erent-sizes vand means for bringing the .die members firmly against the Abacks yof the flanges preparatory to the successive .punchings. -v u `-46..A punching machine y including in combination aslidable punch-and. die carrymenate mounted onvsaid slidable frames,.actuating levers connectedto said slidable frames and to-said punch actuating devicesand means for successively traveling and stopping -a beamy relatively to the punching means and means for automatically.centering the flange receiving devices for beams of dierentsizes and: for movingthem away preparatory .to thea forwarditravel .ofthe beam. u

-.47..A punching machine including f in combination a-vr slidable spunch. and. die carrying. framefadapted ltot receive. abeam flange, an .cpposed 'punchl and- .die earryingqframe adapted to receive the -other flange ofthe beam, ymovable punch actuating fdevices mountedon said-.slidable\frames., actuating levers connected to said slidable framesiand to saidl punch actuating devices, means tor successively traveling. :and stopping a 4-beam relatively. to. the v punching.. means, means controlled lby- .the-beam for centering .the

flange. .receiving .devices forv .beams of. difierent-sizes .and .means torbring-ing .the die members firmlyagains'tfthe backs of` the flanges preparatory to thesuccessive punchne's- 1 -4S.. A punching machine including in combination a-plurality ofsets of-punchesand dies foiysimultaneously, .punching groups of holes in both` flanges-of Aa Y'beam..means for varying the distance between'the, punches in eachwgreup. p

.49. f-A-.punchinganachine including in combmationa. plurality yoit-sets of-.punches and .cl-ies for.simultaneously punchinggroups of holesin bothfla-ngesof a beam,.means for varying the distance between the punchesin each;groupf..and means torvaryingthe distance.; ofthe holes from the. edges of. the flanges. u c

50. Apunching machine vincluding in combination a plurality of sets of' punches-and dies for .simultaneously punchingi groups of holes in both. fianges. .of a. beam, means for varying the distance. between. the punchesin each-grou:p,.meansfor varying the distance .ofthe holes from. the edges of the .flanges and means for .varying the distanceI between the setsbfpunchesand dies. for the Lrespective fianges. n r

.51; Apunchng machine includingincom- -bination a `pli'iralityof sets ofpunchesand dies. for simultaneously punching groups .of

.heles inboth flanges of .a beam, meansdfor varying ,the distance between. the punches. .in each'I group y.andmeans forpressing .the .die carrying. members. ifirmly'against the. backs of. the; flanges: preparatory tog' punching.

x52. A punching; machine `includ-ing.l incomassises bination a plurality of sets of punches and dies for simultaneously punching groups of' holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of the holes from the edges of the flanges and means for pressing the die carrying members firmly against the backs of the flanges preparatory to punching.

58. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of' the holes from the edges of the flanges, means for varying the distance between the sets of punches and dies for the respective flanges and means for pressing the die carrying members firmly against the backs of the flanges preparatory to the punching.

54. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

55. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of the holes from the edges of the flanges and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

56. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of the holes from the edges of the flanges and means for varying the distance between the sets of punches and dies for the respective flanges and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

57, A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for pressing the die carrying members firmly against the backs of the flanges preparatory to punching and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

58. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of the holes from the edges of the flanges, means for pressing the die carrying members firmly against the backs of the flanges preparatory to punching and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

59. A punching machine including in combination a plurality of sets of punches and dies for simultaneously punching groups of holes in both flanges of a beam, means for varying the distance between the punches in each group, means for varying the distance of the holes from the edges of the flanges, means for varying the distance between the sets of punches and dies for the respective flanges, means for pressing the die carrying members firmly against the backs of the flanges preparatory to punching and means for successively traveling and stopping a beam relatively to said punching devices to be punched thereby.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LOUIS A. HAWTHORNE.

Witnesses:

JOHN D. MORGAN, EDW. V. VVENTs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.