US2202514A - Portable punch - Google Patents

Description

May 28, 1940( D. A. BENNER PORTABLE PUNCH Filed Nov. 4, 1939 his l/ii'orvwg.

i. Fig. 515

Patented May 28, 1940 a v This invention relates "to the type specially adapted holes through the webs other. metal shapes where forces are utilized in the ES PATE-NT10 -1 j PORTABLEIPUNCI'I Dale A. Benner, Alton,

Application November 4, 1939, Serial No. 302,816

7 Claims. mer -pun 5 portable punches of for use in punching of metallic rails and :Objects of the invention are to provide a punch comprisinga strong metallic frame constructed and arranged to tortion by the compressive sustain and resist disforces to which the punch is' subjected when used; to provide a punch of this type having means'for supporting removable, replaceable andinterchangeable dies in a fixed position in relationship with a shaft the frame in cooperative for operating a punch to form holes through'rails and other elements interposed between the punch and any selected die; and to provide a novel form of mechanism for operating the punch Another object of shaft.

the invention is to provide a portable punch of this type'havinga sleeve attached to its outer'end andprovided with a circumferential series of teeth supported by said sleeve thereon, means for securnation with a frame for relative rotation splines, in combiing the frame on and about the sleeve for indesupported by said frame pendent rotary movements, and a reversible pawl and arranged to engage with the teeth or splines on said sleeve to rotate said sleeve and thereby said shaft when,

the frame is turned in one direction, and to escape over said teeth or splines when the frame is turned in the opposite direction, means for reversing the position of said pawl whereby turnbe and ing movements may in either direction,

with said frame'for engaging a turn said shaft.

actuating said frame to imparted to the shaft means in connection bar or lever for I Other'objects and advantages of the invention will be readily apparent from the following description, reference being made to the annexed drawing, in which- Fig. 1 is a side elevation of my improved portable punch, the ratchet thereof being omitted.

operating mechanism Fig. 2 is an outer end of side elevation of the ratchet operating mechanism Fig. 3 is a longitudinal for the punch. sectional view showing the cooperative relationship of the parts of the operating mechanism.

cooperating sleeve direction.

Fig. '4 is a cross-sectional View of the operatpawl engaging the a similar sectional View showing the pawldisengaged from the, operating sleeve and high compressive. operation of the punch.

ential'groove I9 is a polygonal portion turnedto position to engage and rotate the sleeve in the oppositedirection.

for engaging the ratchet sleeve.

The frame of my improved punch may be of the same light weight and extremely strongconstruction-"as that disclosed in my-copending application'Serial No. 302,815 filed on even date herewith. As disclosed'in said application, the

metallic frame isgenerally of C-shape, including a fiat portion I, outer marginal reinforcing flanges 2 terminating at the opposite axially alined portions 3 and}, and also provided at its inner margin with opposite curved flanges 5 united attheir ends with the portions 3 and 4, and a plurality ,ofputwa'rdly' diverging flanges 6 connectingthe flanges 2 and 5, as shown. The device is formed with a suitablehandle I. The waste discharge hole 9 communicates with a recess lfl' adapted to receive and support interchangeable dies H each of which has a bore l2 therethrough. As in my said companion application, this construction permits the interchange and substitution of different dies for different types of work. The shaft a threaded hole in the supporting portion 4 for longitudinal movements toward and from the die HQ A punch body {8 formed with a circumferrotatively supported within the inner end of the ing end. These pins 2| may be removed and replaced to permit th removal and substitution of one punch-for another. c

The outer end of the shaftlB is formed with 26. A sleeve 21' is mounted on or attached to the polygonal portion 26 and. isformed with a circumferential series of teeth or splines 28. The endsof the sleeve 21 extend beyond the teeth 28. An annular frame 29 has an internal diameter slightly in excess of the diameter of the sleeve 21 including the teeth'28, and has at one end a flange 30 enclosing one projecting end .of the sleeve. 2! beyond the ends of the teeth 28. A ring 3| is pressed into the opposite end of the frame 29 and is complementary to the flange '30. The distance between the flange 30 and the ring 2| is slightly greater than the length of theteeth 28.. The flange 30 and the ring 31 cooperate to holdthe frame 29 in assembled connection w'th' the sleeve 21 and-to prevent detachment or separation of said parts.-

7H shaft l6 by pins 2|, and isformed with a punchextension 22 on its project- I6 is screwed through If desired, one or more set screws 32 engaged in threaded holes in the frame with the ring 3! to cooperate with the pressed fit of said ring to prevent detachment or separation thereof from the frame 29 and to leave said frame 29 freely rotative on and about the sleeve 27. The frame 29 is formed with an integral radial tubular extension 33 in which a ratchet head or pawl 34 is mounted for longitudinal and turning movements.

A tooth 35 is formed integral with the inner end of the head 34, and is provided with one abrupt wall 35 and an oppositely formed inined wall 31. The head 34 is formed rigid with a stem 38 extending outwardly through a combined bearing and latch block 39 fitted and secured within the outer end of the tubular part 355 by a retaining pin 40. A combined selector and latch device M is rigidly attached to the outer end of the stem 38 and is formed with a tooth d2 adapted to engage in notches 43 in the outer end of the part 33 and in the block 39. A spring i iencircles the stem 38 between the head 3 and the block 39 and functions to press the head 3 in a direction to engage the tooth 35 with the teeth 28. I

When there is resistance to rotation of the shaft 95, as when the punch 22 is in contact with the work, the frame 29 may be turned in one direction without turning said shaft Hi. This is because the inclined wall 31 of the tooth 35 will slide against and over the teeth 28, the spring 44 yielding to permit necessary movement of the ratchet device. However, when the frame 29 is turned in the opposite direction, the abrupt wall 35 will positively engage the respective teeth 28 and thereby turn the shaft it.

As may be understood by a comparison of Figs. 4 and 5, the position of the ratchet device may be reversed in order to rotate the shaft I B in reverse directions. In the adjustment shown in 4, the shaft !6 will be rotated in a clockwise direction; and, in the adjustment shown in Fig. 5, the shaft will be rotated in a counterclockwise direction when the ratchet device engages the teeth 28 of the sleeve 21.

A radial socket 65 is formed integral with the frame 29 and preferably adjacent to and integral with the extension 33, and is designed and adapted to receive one end of an operating lever or bar for actuating the operating mechanism to rotate the shaft it. By oscillation of such an operating lever or bar, the frame 29 may be rocked about the sleeve 21 to impart successive turning movements to said sleeve and thereby to the shaft it, the ratchet device escaping over the teeth 28 of the sleeve 27 during return or ineffective movement of the parts.

In this device, the operating mechanism may be permanently or detachably secured to the polygonal portion 26 of the shaft l6. Preferably, the operating mechanism is detachable from said shaft in order to facilitate carrying of the device from place to place.

It should be apparent that the invention attains all of its intended objects and purposes very efficiently and. satisfactorily, and may be varied within the scope of equivalent limits without departure from the nature and principle of the invention as defined by the appended claims.

I claim:

1. In a portable punch comprising a metallic frame of approximately C-shape having enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supportmay be 29 and ing portion; a shaft screwed through said punch supporting portion for movement toward and from said die and having a punch attached to the inner end thereof for cooperation with said die, a ratchet sleeve attached to the outer end of said shaft for rotating the same, an annular frame enclosing and rotative about said ratchet sleeve, a pawl supported by said frame for engaging and turning said sleeve and thereby said shaft in one direction by turning movements of said frame and arranged to escape about and leave said sleeve stationary when said frame is turned in the oposite direction, a device for moving said pawl to reverse position to turn said sleeve and thereby said shaft in the opposite direction, and means rigid with said frame for engaging a lever bar for operating said frame to rotate said shaft.

2. In a portable punch comprising a metallic frame having enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supporting portion; a. shaft screwed through said punch suporting portion for movement toward and from said die and having a punch attached to the inner end thereof for cooperation with said die, a sleeve attached to the outer end of said shaft, a circumferential series of teeth integral with said sleeve, an annular frame enclosing and wholly supported by said sleeve, means in conection with said frame 00- operating with said teeth to prevent displacement of said frame relative to said sleeve, a pawl supported by said frame for engaging and turning said sleeve in one direction by turning movements of said frame in said direction and arranged to escape about and leave said sleeve stationary when said frame is turned in the opposite direction, a spring for engaging said pawl with said teeth on said sleeve, and means for manually turning said pawl to and latching said pawl in diiferent adjusted positions for operation to turn said sleeve in either direction as desired.

3. In a portable punch comprising a metallic frame having enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supporting portion; a shaft screwed through said punch supporting portion and having a punch attached to the inner end thereof for cooperation with said die, a sleeve attached to the outer end of said shaft for retating the same, a series of circumferential ratchet teeth integral with said sleeve, a frame enclosing and rotative about said sleeve, means rigid with said frame engaging the ends of said teeth and holding said frame about said sleeve, a tubular radial extension integral with said frame, a pawl mounted in said extension for engaging and turning said sleeve in one direction by turning movements of said frame in one di rection and leaving said sleeve stationary when said frame is turned in the opposite direction, a spring for actuating said pawl into engagement with said sleeve, and a manually adjustable latch device for holding said pawl in adjusted position to turn said sleeve in either direction as desired by operation of said frame. I

4. In a portable punch comprising a metallic frame having enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supporting portion; a shaft screwed through said punch supporting portion and having a punch attached to the inner end thereof for cooperation with said die, a sleeve attached to the outer end of said shaft, a circumferential series of ratchet teeth integral with said sleeve, an annular frame enclosing and rotative about said sleeve, a flange integral with said frame engaging one end of said ratchet teeth, a ring secured within the opposite'end of said frame engaging the opposite end of said teeth from said flange, a tube integral with said frame'pawl mechanism supported in said tube for engagingv deintegral with said frame and tube for engagement with an and turning said sleeve in either direction as sired, and a socket disalined from said operating lever.

5. In a portable punch comprising a metallic frame having enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supporting portion; a shaft screwed through said punch supporting portion for operating a punch toward and from said die,

' a ratchet sleeve attached to the outer end of said shaft, a frame wholly supported by and rotative about said sleeve, a radial tube integral with said frame having a plug mounted in its outer end, a pawl device mounted for sliding and turning movements in said tube for engaging and 'turning said ratchet sleeve and thereby said shaft in desired, a spring enclosed in either direction as said tube between said pawl device and said plug, a stem attached to said pawl device and extending through said plug for longitudinal and turning movements, and a latch member attached to the outer end of said stem for engaging said plug to hold said pawl device in position to turn said ratchet sleeve in either direction as desired. 1

6. In a portable punch comprising a frame having enlarged axially alined punch supporting portions at itsends, attached to said die supporting portion;

die and a shaft screwed through said punch'supporting portion for operating a punch toward and from said die, a ratchetsleeve attached to the outer end of said shaft, a frame wholly supported by and ro tative about said'sleeve, a radial tube integral said tube between said pawl and having a punch for metallic and a die with said frame havinga plugmounted in its outer I j end-, a pawl device mounted for sliding and turning movements in said tube for engaging and turning said ratchet sleeve and thereby said shaft in either direction as desired, a spring enclosed in device and said plug, a stemattached to said pawl device and extending through said plug for longitudinal and turning movements, a combined handle and latch member attached to said stem for manual adjustment of said pawl device in positions for engagement. withsaid plug to hold said pawl device in position to turn said ratchet sleeve in either direction as desired, and a socketfintegral with said frame arranged to engage a lever for operating said frame.

7.. In a portable punch comprising a metallic framefhaving enlarged axially alined die and punch supporting portions at its ends, and a die attached to said die supporting portion; a shaft screwed through said punch supporting portion different adjusted positions, a tooth in connection with said pawl device for engaging and turning said ratchet sleeve in either. direction as desired accordingto the adjustment of said pawl device, means'for latching said pawl device in position to turn said ratchet sleeve in either direction as desired and leaving said pawl device free for longitudinal movements in said tube, and a socket rigid with said frame for en-.

gaging a lever to operate said frame.

DALE A. BENNER. 40 L cooperating with said

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