US1261033A - Punching-machine. - Google Patents

Description

A. KASSLER. PUNCHING MACHINE-l APPLICATION msu FEB.2'1.1915.

1,261,033. y1 ate1 11;@dAp1-. 2,1918.

2 SHEETS-SHEET l.

A TTO/UVEY A. KASSLER. PUNCHING MACHINE. APPLICATION min fm2?. |915.

Patented Apr. 2, 1918. 2 SHEETS-SHEET 2 www@ [Nl/'EN TOR.

A TTENEY ADOLPH xAssLEa, or NEW YORK, 1v. Y.

rUNcHINe-Mncnmn.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application led February 27, 1915 Serial No. 10,972.

y To all 'whom it may concern.'

y clear, and exact description, vsuch as will enable others skilled in the art to which it appertains to make and to use the same, reference being had to the accompanying drawings, which illustrate the preferred form of the invention, thoughit is to be understood that the invention is notilimited to the exact details of construction shown and described, as it is obvious that various modifications thereof will occur to persons skilled in the art.

In said drawings: y Figure 1 is a side elevational view of the tool showing in full lines the position of its parts and in dotted lines showing diagrammatically the position of some ofits movable parts, when its work is finished.

Fig. 2 is a vertical sectional view, the section being taken on line 2--2 of Fig.`1.

Fig. 3 is an inverted plan view of the stationary handle hereinafter described.

Fig. L1 is an enlarged detail fragmentary elevational view, partly in section, showing the tool head.

Fig. 5 is an end view of the parts shown in Fig. 4. y Fig. 6 is a diagrammatic illustration of a modification of the detail hereinafter described.

The object of the invention is to produce a portable punching tool which is of relatively simple construction, considering the class of work to be performed, and which will be light, strong, durable and possessed of maximum eliiciency.` y

This is accomplished by means of the structural arrangement and coordination of parts in the improved tool herein described to permit the utilization of cooperating levers and gearing in suchmanner as to secure maximum efficiency' when required with comparatively slight expenditure of manual force.

With the understanding that the device is movable as a unit, I will, for convenience of description, refer to one handle as a stationary handle, because during operation it is relativelystationary; and will refer to one handle as a movable handle, because, in operation, such handle is movable relatively to the, so-called, stationary handle.

Referring to the parts 1 is a stationary handle, provided at its forward end with a head 2, slotted as at 3, for the reception of the material to be operated upon.

The head is provided with an upper arm` 5 and a lower arm 6 which lie, respectively, above and below the slot 3, the upper arm being provided with a normally vertically disposed perforation 7, while the arm 6 has tapped therethrough, in vertical alinement with the perforation 7 an orifice 8 adapted to retain therein a female die member 9.

The head 2 extends upwardly as at 10 where it is perforated for the reception of a pivot 1l on which rocks the movable lever arm 12, said arm 12 being pivoted intermediate its ends as shown.

The shorter arm 13 of arm 12 is cut away in a curved line 14. thereby forming a curved bearing face adapted to engage the roller 15 which in turn bears on the upper end 0f the male die 16, orpunching tool holder, in which is removably seated the punch 17, which is held in working position by means of the set screw 18, as indicated in Fig. 1.

Connecting the'male die 16 with the movable arm portion 13 are companion links 18 which are pivotally connected with said male die and arm portion respectively by means of pivots 19 and 20.

From the foregoing description, it is evident that in movement of the arm 12 from the .position shown in full lines in Fig. 1

`a commercially rolled angle.

However, in punching such a member, a considerable degree of force is required and to provide such force special means are provided asfollows: y

The arm 12 is provided on its curved inner face with a rack 20.

The stationary arm 1 is provided with an olfsetextension 21 to which is pivotally connected an operating arm 23 which is bifurcated as shown in Fig. 2 to permit it to straddle the stationary handle to which it is secured by a pin 22. Secured to the arm 23 is a projecting gear casing 24 adaptedto inclose gearing hereinafter described, while machine screws 25 pass through flanges 2G oili' the gear casing 2a into the arm Q3 to secure said gear casing in position.

Within the gear case is a gear Wheel 27 mounted on the shaft 28, said shalt passing through the arm 9.3, and on the same shaft within a pocket 29 of the arm Q3 is a pinion 30 which is normally in mesh With the rack 2() on the arm 12 before identilied, so that, as the gear 27 is rotated, the pinion 30 will travel along the rack 2O of the movable arm, rock the lever arm 12-13 and actuate the punch 17.

To drive the gear 27, l prefer the ar-' rangement illustrated consisting of the pinions and 36 mounted on the shafts or pins 37 and 38 respectively.

The shaft 37 extends a suitable distance 4beyond the arm 23 and is provided With a non-circular portion on which is mounted a crank handle 39 held by suitable locking means as the nut 40.

It is evident that the pinion 35 may be driven by the crank handle thus actuating pinion 36, gear 27 and pinion 30 thereby actuating the movable lever arm 19. in the required direction.

To provide the proper movement o'l the short arm 13 of the movable arm 12 said arm 12 is pivoted at 11 so that its lower rack portion may move upwardly and remain in engagement with the pinion 30, before referred to, while said pinion moves in the arc represented by the dot and dash line in Fig. 1.

A' pair of pinions as 35 and 36 are preferred, but, as shown diagrammatically in Fig. 6 a plurality of pairs of intermeshing pinions as 35--3G, 35, Sand S51 36h may be employed of different sizes to drive the gear 27 so that more or less speed of operation may be secured, it being understood that the crank handle may be applied to the shafton which any ol the pinions 35 to 36h is carried, if desired, and if advisable but the one pinion 3G employed to actuate gear Wheel 27.

As speed of operation lends to elilciency, the operating arm 23 is provided at its upper end with a handle portion l5 which may be grasped by the hand of the operator to return the operating arm from the dotted cated may be effected Without causing actuation of the crank handle 39 which in such case would permit the shaft 37 to rotate freelyin the socket 46 of such cranlrhandle.

During punching movement, if but light Y Work is to be done, the operating arm may be actuated in both directions from the handle 45 or the gearing described may be portion being adapted to carry a movable punch, a punch carried by said head, a movable lever arm pivotally connected with said Y head intermediate its ends, one end of the lever arm extending in alinement with said punch, a rack on the portionof said lever arm'tha-t extends from its pivot to its oppo- Site end, an operating arm pivotally connected with said stationary handle intermediate its ends, a plurality of pinions carried by said arm one of which is operatively connected with the rack of said lever arm, a gear rotatably connected With bothsaid pinions, and means for actuating said gear.

2. ln a tool of the character described, a stationary handle, a movable lever arm pivoted intermediate its ends, a punch reciprocally actuated by one end of said lever arm, the portion oij' said arm that extends in the opposite direction 'from its pivot having a rack and said stationary handle having an oliset portion intermediate its ends, an operating arm pivotally connected with said offset portion, and lever-arm-operating-gears carried by` said operating arm adapted kto co-act with said rack to cause the operating arm to move longitudinally of and to actuate saidlever arm.

3. In a tool of the character described, a stationary handle having an offset portion intermediate its ends and terminating at one end in a head portion adapted to carry a punch, a movable lever arm pivoted intermediate its ends, one end thereof being alined with and adapted to actuate said punch, said lever arm having a rack on its portion that extends from its pivot toward its opposite end, a bifurcated operating arm pivoted to and straddling said odset portion of the stationary handle, a pinion carried Vin a pocket of the operating arm said pinion meshing with the rack on said lever arm and means carried by the operating arm adapted to rotate said pinion and thereby rock said lever arm to actuate said punch.

il, ln a deviceof the character described,

a stationary handle, a head, areciprocatory member in .said head, a rockable lever arm pivotally mounted on the headintermediate the ends of said lever arm, one end thereotl being alined with andadapted to actuate said member and the portion of saidarm that extends from its pivot toWardits opposite end having a rack, an odset portion on said stationary handle, a bifurcated operating armpivotallyconnected with said oilset portion there being a pocket in said operating arm through which said lever arm` extends and means carried by said operating` arm partly Within said pocket including a pinion engaging said rack and adapted to cause the operating arm to move longitndr nally of and thereby to rook said lever arm.

5. In a tool of the elass described, a stationary handle, a movable lever arm pivoted intermediate its ende and having,1 an end alined with and adapted to aetuate a reciprocatory member, an offset on said station ary handle, a rookable operating arm pivotally connected with said offset and extending beyond and embracing said movable lever arm and means comprising a pinion and a rack carried by said operatingrarm and 'the portion ol said lever arm on the side of the pivot thereof that is opposite its member-aetuatingl end, respectively, adapted to aotuate said lever arm from said operating arm, 'and to move the operating arm longitudinally of the movable lever arm.

ln Witness "whereof I have hereunto set my hand in the presence of two Witnesses. ADOLPH KASSLER. YVtnesses B, VANDER BENGLE, JOHN C. GALLAGHER.

Copies oi' this patent may be `obtained for five centseaeh, by addressing the Commissioner of Patents, Washington, D. C.

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