US714401A - Punching-machine. - Google Patents

Description

UNITED STATES JULIUS SADOWSKY, OF PITTSBURG, PENNSYLVANIA.

PuNcHlNc-NIACHINE.

SP11."CIFIGATION forming part of Letters Patent No. 714,401, dated November 25, 1902.

' Application lod August 6, 1992. Serial No. 118,566. (No model.)`

To all whom it may concern:

Be it known thatl, JULIUs SADowsKY, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Punching- Machines, of which the following is a specili-` cation.

In the accompanying drawings,which make part of this specification, Figure I is a plan of my invention, portions being in horizontal section; Fig. II,an end elevation thereof looking toward the left-hand end of Fig. I, the stop-gage being in vertical section; and Fig. III, a perspective of the right-hand end ofthe stop-gage as seen in Fig. I.

My invention relates to punching-machines for punching holes in structural and other iron. Its object is to provide therefor mechanism for accurately and quickly punching a number of holes, Whether alined or staggered,

at regular or irregular distances apart. It isv necessary that the holes in structural iron and the like shall be precisely located, so that the various pieces thereof shall have the holes in exact register for the rivets and bolts. I have provided a machine thatwill fulfil this requirement and that does not need a skilled person to operate it.

1 represents the horizontal stationary block, that carries the female dies 2 and 3, secured to the blockby the bolt 4.

. 5 is the reciprocating block, that carries the punches 6 `and 7. Seated on block 5 are the guide-blocks 8 for the punches 6 and 7 and the gag-blocks 9, only one of which is shown. The guide-block 8 carries mechanism for controlling both punches; but as the mechanism is the same for both that of one only will beV described.

The gag-block 9 reciprocates transversely of the punch in the slot 10. At one end of its reciprocation it stands,'as shown in Fig. I, With its inner end out of the path of the punchstem 11, which reciprocates in the extension 12 of the slot 10 and the hole 13 in the guideblock 8. The extension 12 is larger than the hole 13 and receives the head 14 of the stem 11 of the punch, which head prevents the separation of the punch from the block 8. Surrounding the stem 11 and located between the block 11 and the shoulder 15, at the outer end of the stem, is a spring 16, which normally holds the head 14 out of the path of the gagblock 9. In the position of the parts in Fig. I either the head 14 or the gag-block 9 is free to enter the left-hand end of slot 10.

The block 5 is carried by the bar 17, slidable in the bearing 18.

19 19 represent the rails on which the wheels 2O of the carriage 21 travel. The carriage has at its advanced end a pair of jaws 22, closed by the cam 23. A cord 24 is attached to the rear end of the carriage and passing over the sheaves 25 is secured to the drum or spool 26, loose on the shaft 27. cated between the collar 28, fixed on the shaft 27 by the set-screw 29, and the collar 30,which rotates with the shaft and is by reason of the spline 31 slidable thereon into engagement with the one end of the drum and away therefrom. The collar 30 has a peripheral groove in which is seated the ring 32, Within which the collar may turn. Pivotally secured at 33 to the ring 32 Ais a foot-lever 34, pivoted at 35.

Bolted to the under side of the carriage 21 is the stop-gage, having a set of long arms or bars 36 extending alongside the machine under the block 5. The arms have their outer ends secured by the tie-plate 37 and are spaced apart so as to form long slots 38, in which the headed bolts 39 may be adj ustably secured by'the nuts 40. The arms are rabbeted at 41 along their outer faces adjacent to the slots 38, and theY heads of the bolts 39 have corre- 1 spending lugs 42, fitting in the rabbets. There will be as many horizontal rows of bolts 39, hereinafter called stops, as may be required to produce the desired holes. stops or, what is the same thing, the number of slots 38 will in general correspond to the number of independent punches.' The upper and lower bars 36 are provided and supported vertically on spool-shaped rollers 43 and horizontally by the roller 44, supported on braced standard 45.

46 is a U-shaped support for the catches The drum is lo- The rows of have long slots 54 for the reception of the pin, so as to provide for the arc movement of the levers, which are pivoted above the pin. Lever 51 is pivotally attached to the pin 55 on the catch 47, and lever 52 is pivotally attached to the pin 56 on the catch 48.

Pivotally secured above the support 46 are two bell-crank levers 56 and 57, to the short arms of which the levers 5l and 52 are respectively pivotally connected by means of the slots 58. The lon g arms of the bell- cranks 56 and 57 are pivotally connected to the links 59 and 60, respectively, secured pivotally to the gag-blocks. The links are slotted to secure the pins 61 on the bell-cranks. The block 5 is provided with a plate 62, through which the links pass and to which one end of the retractile springs 63 are attached. The other ends of the springs are attached so as to travel with the links.

The piece of iron 64 to be punched lrests and travels on the gage 65, provided with the roller 66 and the rack 67. A pinion 68 meshes with the rack and serves to raise and lower the gage, so that the iron may be punched on the proper horizontal line.

The operation is as follows: The stops 39 are set at distances apart corresponding to the distances between the centers of the holes to be punched. The iron having been laid on the gage between the punches and their dies and clamped by the jaws 22, the operator presses his foot on the lever 34. This brings the constantlyrunning collar against the drum 26 and causes the carriage to move to the left. The lever 51 having been previously pushed forward slightly, as shown in Figs. I and II, the catch 47 has been set in the path of the first stop 39 of the upper row of stops. During this operation the punch has been reciprocating, but has not entered the iron, because the gag-block has not been thrust behind the head 14 of the punch-stem, as shown in Fig. I. This is due to the fact that the pin 61 normally rests at the right-hand end of the slot in the link4 59. When the lever is pushed forward slightly, the catch is projected into the path of the stop, but the pin 61 has at the same time traveled in the slot of the link. When the pin has reached the left-hand end of the slot, further pushing in of the lever drives the gag-block behind the head 14 of the punch, and the punch and its supporting-blocks all move together rigidly, and when the punch engages the iron it passes through it into the female die. The lever 51 is then pulled forward, withdrawing the gag-block from behind the punch-stem and the catch from the stop, whereupon the carriage 21 moves to the left until the lever 51 or 52 is again pushed forward, so as to cause the catch 47 or 48 to engage a stop in the upper or the lower slot 38, according to the predetermined disposition of the stops.

When the lever 52 is operated, the operation is precisely the same as when lever 51 is operated, except that the catch 48 and the other gag-block are operated, so as` to make punch 7 operative.

The foot-lever 34'may be pressed all the time the machine is running, and when a catch engages a stop the shaft 27 will turn within the drum 26, or the lever may be pressed at each step of feeding the carriage, or the pressure may be partly taken off at the close of each step.

The dies may both be adjusted by means of the bolts shown.

This invention is applicable to machines for drilling, dac., in which the punching-die may be exchanged for other machine-tools, as drills, dac. It is also clear that my gagblock may be adapted for use with stationary punch-holders.

Having described my invention, I claim- 1. In a punching-machine or the like, a carriage for the work, a slotted gage thereon, stops adjustable in the slots of the gage, and means adapted to engage the stops.

2. In a punching-machine or the like, a carriage for the work, a gage secured thereto and having two or more spaced hars, stops adjustable in the spaces, and means adapted to engage the stops.

5. In a punching-machine or the like, a carriage for the Work, a gage secured thereto and having two or more spaced and rabbeted bars, stops adjustable in the spaces and rabbets, and means adapted to engage the stops.

4. In a punching-machine or the like, adieactuator, a die reciprocable relatively thereto, a gag-block adapted to rigidly connect the actuator and the die, a carriage for the work, a series of stops carried thereby, a catch adapted to engage the stops and a single means for moving the gag-block and the catch into operative positions.

5. In a punching-machine or the like, a dieactuator, a die reciprocahle relatively thereto, a gag-block adapted to rigidly connect the actuator and the die, a carriage for the work, a series of stops carried thereby, a catch adapted to engage the stops, and means adapted to move the catch and gag-block successively into operative positions.

6. In a punching-machine or the like, a dieactuator, a die reciprocable relatively thereto, a gag-block adapted to rigidly connect the die and the actuator and means for holding the die so that the gag-block may so connect the said parts.

7. In a punching-machine or the like, a traveling die-holder, a die reciprocable therein, a gag-block carried by the holder and adapted to rigidly connectthe die and the holder, a link flexibly connected to said gagblock, and means having a fixed support and connected to said link for moving the gagblock so as to connect said die and holder.

8. In a punching-machine or the like, a carriage, a stop therefor, a gag-block, a catch for engaging the stop, and a lever adapted to operate the catch and the gag-block.

9. In a punching-machine or the like, a car- IOO IIO

catch and stop may come into mutual con-` tact. A

11. In a punching-machine or the like,a carrlage, al feeding mechanism therefor, comprising a constantly-running shaft, a drum loose on the shaft, a cord connecting the carriage and the drum, a collar turnable with the shaft and slidable thereon into engagement with the drum, a ring on the collar, and means connected to the ring and under control of the operator for so sliding said collar.

12. In a punching-machine or the like,a carriage,.a stop therefor, a catch to engage the stop, means for normally holding said stop and catch disengaged, and means for causing said stop and catch to engage at will.

Signed at Pittsburg this 26th day of July,

J ULIUS SADOWSKY. WVitnesses:

GEO. H. HARVEY, G. W. LERGH.

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