US2189742A - Perforating machine - Google Patents

Description

Feb. 6, 1940. RUPPERT 2,189,742

PERFORATING MACHINE Filed March 11, 1939 I 2 Sheets-Sheet 1 INVENTOR. fiflry [Zap 6677 7 W ATTORNEYS PERFORATING MACHINE A Henry Ruppert, Woodsidc, 4 N. Y., assignor, to Leedall Products, Inc., New York, N. Y., a core poration of New York Application March 11, 1939, Serial 11 Claims.

of material, whether a fabric, paper or leathers- One of the objects of the invention-is to provide a perforating machine of this general type which is completely mobile, so as tomake it possible to move the entire machine over an expansive surface or area in any direction so as to apply the perforations in any design, includ-..

6 ing those involving a curved alignment and abrupt changes in the direction of the line of perforations. Anyfof many complicated formsand therefore decorative designs are thus possible of application with my mobile type of perforating 55 machine, "which does not, as do certain structures of the prior art, embody a rigid frame associatedfiwith a stationary Work support and which are"characterized by the disadvantage that only'str aightdines of perforations are capable of 3f applicatiorito' the material treated.

A further object of. the invention is to provide a perforating-machine embodying ahammer operative upon the punch, which in turn is me chanically lifted by the hammer, as distinguished from prior art structures in which the punching V A still .further object of the invention is t provide a perforating machine embodying anadf' 6 justable. mechanism for regulating the pressure l of the hammer, so that the perforating machine may be appliedto produce perforations in differtype of control keeping the punchoperating hammer in upright position. r

A still further object of the invention is to 56 provide upon the perforating machine a recessed base plate'of such form and contouration as'ito make possible in conjunction with the mobility of the apparatus as a whole the-application of a variety of designs ofdifferent form to the ma- ::teria1operated. upon.-

A specific embodiment of my novel perforating machine is illustrated in the accompanying drawings, in which Fig. 1 is a vertical partially I sectional View through the machine, along the lines |l of Fig.2; Fig.2 is a plan view of the machine; Fig; 3 is a vertical section along the line-3 3 of Fig. 2; and Fig. 4 is a section along the line 4 '4 of Fig. 2.

6.;;.U'NITEIDQSTATES PATENT, OFFICE f -"Referring more particularly to the drawings, I

in; which similar reference characters identify similar'partsin the several views, mynovel perforating machine comprises a gripping handle of aficonflg'uration facilitating its grasping byone handof the-operator. The handle 5 is supportedupon afbase 6 of substantially oval form having a recess the forward portion thereof.

Supported upon the upper'edge of the handle 5 is a plate'8 through an aperture of which near the handle 5 is mounted a switch '9,the operating handle) of which" is thus positioned so as to be within easy reach of the thumbof the operato'r while the 'machine is being grasped by the hand, withthe palm encompassing the handle 5 andthe fingers in operative contact straddling the trigger I I. 'The trigger ll'is'pivoted upon a screw 12 passing through an upstanding projection l3-of. a vertically disposed block l4, which acts one of the bearin'gsfor a shaft I5 upon whichjthefulcmnnmember lfi of the hammer is mounted, The opposite end of the shaft I5 is supported, within a block extending from the Plate -.1. 1 1. v Supported upon the plate 8 is an electric motor 'l8,-to"the end of the shaft to whichis secured a pinion l9 meshing with a gear supported upon a shaft-2| within bearings 22, 23, extending upwardly from the'plate 8. Qperatively securedfl tothe gear-'20, and upon the shaft 2| is acam 24,;the highdwcll of which, up'onyrotation of the cam is adapted to press downwardly upon the rearwardlyfextending portion of the hammer to cause the hammer to be rotated about its ful crum l6,"the body of the hammer 2'1, extending forwardly of its furcurm thus being raised, carrying withit the integral hammer head 28.

Secured to the hammer body 21 is a stop plate 29 having a heel portion 30 which, upon rotation ofthe hammer about its fulcrum, engages arece'ss 3| in the trigger, thereby acting as a stop, so that when the trigger H isreleased by"th'e fingers 'of the operator, the hammer 21 ceases operating. 2in thismannen jfull control of the punching machine, even-when the switch 9 is on and current supplied to the motor, is had-byof the cam 24 to depress the heel portion of the cause the perforating in the material only during such times that the trigger is under pressure, and ceasing to operate immediately after pressure on such trigger is released, depending upon the exact position of the hammer arm 30.

When the hammer has been raised by the mechanism and in the manner hereinabove described, it is caused to descend by means of its own weight and a-spring 32 anchored at one end to the projection 33 extending downwardly from the fulcrum of the hammer and at its other end to a pin 34 extending from a block 35 mounted for linear movement upon a threaded shaft 36 which may be rotated, for adjustment of the tension of the spring 32, by a knob 31,

The electrical circuit to the motor includes a speed regulator generally designated at 38, which includes an ordinary rheostat 39 and a regulating knob 40.

Pivoted at the forward end of the block I4 is a lever 4| having a bifurcated end 42 straddling the shaft 43 of the punch between disc 44 and disc 45 at the upper end thereof. The element 4| at its rear end is engaged by the rear end of element 29. Surrounding the shaft 43 is the hollow punch 46 having the perforating nose 41. The punchings may be disposed of in any convenient manner, for instance, upon removal of punching 4S periodically from the hollow interior thereof. The punch is secured within a housing 48 preferably threaded into the plate 8 near the forward end thereof, with the punch extending downwardly immediately in advance of the opening of the recess 1 in the base plate 6 of the apparatus.

Extending and supported from the plate 8 there may be provided a lamp housing 49 in which may be secured an incandescent lamp 50 for illuminating the surface of the material being perforated. "The electrical connections, including the circuit from the switch to the motor, the speed regulator and the lamp are not shown as they may be conventional.

The operation of my novel perforating machine is as follows: i

The machine is grasped by the operator by the gripping handle 5, with the fingers of the same hand extending over the front portion of the trigger H and the thumb in substantial proximity to the switch lever Ill. The motor is then started by throwing the switch 9 by means of its controlling lever l0 and when the operation of perforating is to be begun, the trigger is pressed inwardly with the i'lngers. ,This operation will release the stop and cause the rotation hammer, thereby raising the head of such hammer. The spring 32 and the weight of the hammer head will then cause the lowering of said head, lowering the punch 4'! into the material. The next rotation of the cam 24 will then again cause the raising of the hammer at the same time pivoting the lever 4| to raise the punch and lift it out of the material to permit the proper spacing of the apertures. This operation of the mechanism continues, the operator moving the entire machine over the surface of the material to be perforated, following any particular design to be imparted to such material by the line of perforations to be made.

When the line of perforations is to be inter.- rupted, for instance for the purpose of moving the machine to a different portion of the surface of the material, to again impart a new line of perforations thereto, the trigger ll may be engaged with 30 by releasing the pressure of the fingers thereon, the hammer being then automatically interrupted in its operation by the stop mechanism. Upon again exerting pressure upon the trigger, the hammer may again be brought into operation.

The speed regulator 38 may be adjusted in well known fashion to cause a variance in the speed with which the hammer is raised and released. Depending upon the nature and thickness of the material operated upon, the operation of the hammer may be controlled by the tension imparted to the spring 32 by turning of the knob 31 to cause the block 35, to the pin 34 of which the spring is anchored, to move along the threaded shaft 36.

While I have described and illustrated a specific embodiment of my invention, it is obvious that various changes therein, particularly in the arrangement and configuration of the several parts thereof, may be made without departing from my invention.

I claim:

1. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending upwardly therefrom, a plate supported on said handle, a fulcrumed hammer mounted upon said plate, means for raising the forward end of said hammer by depressing the end thereof extending rearwardly of its fulcrum, a spring for lowering the forward portion of said hammer, and a perforating tool positioned for reciprocating movement beneath the hammer, said fulcrumed hammer having a separate movement from said perforating tool.

2. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending upwardly therefrom, a plate supported on said handle, a fulcrumed hammer mounted upon said plate, means for raising the forward end of said hammer by depressing the end thereof extending rearwardly of its fulcrum, a spring for lowering the forward portion of said hammer, and a perforating tool positioned for reciprocating movement beneath the hammer, said fulcrumed hammer having a separate movement from said perforating tool and means for interrupting the operation of said hammer.

3. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending upwardly therefrom, a plate supported on said handle, a fulcrumed hammer mounted upon said plate, means for raising the forward end of said hammer by depressing the end thereof extending rearwardly of its fulcrum, a spring for lowering the forward portion of said hammer, a perforating tool positioned for reciprocating movement beneath the hammer said fulcrumed hammer having a separate movement from said perforating tool, and means for adjusting the tension of said spring.

4. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending upwardly therefrom, a plate supported on said handle, a fulcrumed hammer mounted upon said plate, means for raising the forward end of said hammer by depressing the end thereof extending rearwardly of its fulcrum, a spring for lowering the forward portion of said hammer, a perforating tool positioned for reciprocating movement beneath the hammer, means for adjusting thetensionof said spring, and

means for interrupting the operation of said ally over the material to be perforated, a gripping handle extending upwardly, therefrom, a trigger extending along said handle, a plate supported on said handle, a pivoted hammer mounted upon said plate, means for raising the forward end of said hammer by depressing the end thereof extending rearwardly of its fulcrum, an adjustable spring for lowering the forward portion of said hammer, and a perforating tool positioned for reciprocating movement beneath the hammer said fulcrumed hammer having a. separate movement from said perforating tool, and said trigger being effective for interrupting the operation of said hammer.

6. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending upwardly therefrom, a trigger extending along said handle, a plate supported on said handle, a pivoted hammer mounted upon said plate, means for raising the forward; end of said hammer by depressing the end there-" of extending rearwardly of its fulcrum, an adjustable spring for lowering the forward portion of said hammer, a perforating tool positioned for reciprocating movement beneath the hammer, and means for interrupting the operation of said hammer, said means comprising a stop plate extending rearwardly of the hammer and having a portion engaging the trigger whereby when the trigger is released, the hammer will be in a position of rest.

'7. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle'extending from said base plate, a supporting plate disposed horizontally upon said gripping handle, an electric motor mounted upon said plate, a fulcrumed hammer having a head and a rearwardly extending projection, a cam rotated by means of said motor to fulcrum the hammer, a spring secured to the hammer to cause a lowering of the head thereof, a trigger mechanism for the fulcrumed hammer, secured to, and so as to partially enter, said gripping handle, and a perforating tool depending from said supporting plate to in front of said base plate, said fulcrumed hammer having a separate movement from said perforating tool.

8. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending from said base plate, a supporting plate disposed horizontally upon said gripping handle, an electric motor mounted upon said plate, a fulcrumedhammer having a head and a rearwardly extending projection, a cam rotated by means of said motor to fulcrum the hammen'a spring secured to the hammer to cause a lowering of the head thereof, a trigger mechanism for the fulcrumed hammer, secured to, and so as to partially enter said gripping handle, a perforating tool depending from said supporting plate to in front of said base plate, and a pivoted lever operated by the motorcontrolled mechanismand having a bifurcuated end for lifting the tool out of the material for the spacing of apertures therein.

, end of said pivoted lever.

9. A perforating machine of the type described comprising a mobile base plate slidable manually overthe material to be perforated-a gripping handleextending from said base plate, asupporting plate disposed horizontally upon said gripping handle, an electric motor mounted upon said plate, a fulcrumed hammer having a head a rearwardly extending projection, a cam rotated by means of said motor to fulcrum the hammer, a spring secured to the hammer to cause a lowering of the head thereof, a stop plate, upon one side of the hammer and having a rearwardly projecting nose, a trigger mechanism secured to,

and so as to partially enter said gripping handle and having a recess near the upper edge thereof within which the projecting nose of said stop plate is adapted to enter to prevent the hammer from operating, a perforating tool depending from said supporting plate to in front of I said base plate, and a pivoted lever having a bifurcated end for lifting the tool but of the material for the spacing of apertures therein, said lever being pivoted by the nose projecting rearwardly from the stop plate.

10. A perforating machine of the type described comprising a mobile base plate slidable manually over the material to be perforated, a gripping handle extending from said base plate, a supporting plate disposed horizontally upon said gripping handle, an electric motor mounted upon said plate, a fulcrumed hammer having a head and arearwardly extending-projection, a cam rotated by means of said motor to fulcrum the hammer, a spring secured to the hammer to cause a lowering of the head thereof, a trigger mechanism for the hammer secured to, and so as to partially enter, said gripping handle,and a perforating tool depending from said supporting plate to in front of said base plate, said fulcrumed'hammer having a separate movement from said perforating tool and means for adjusting the tension of said spring for regulating the pressure of the hammer.

1 1. A perforating machine of the type described comprising a mobile'base plate slidable manually over the material to' be perforated, a gripping handle extending from said base plate, a supporting plate disposed horizontally upon said gripping handle, an electric motor mounted upon said plate, a fulcrumed hammer having a head and a rearwardly extending projection, a cam rotated by means ofsaid motor to fulcrum the hammer, a spring secured to the hammer to cause a lowering of the head thereof, a stop plate upon one side of the hammer and having a rearwardly projecting nose, a trigger mechanism secured to, and so as to partially enter said gripping handle and having a recess near the upper edge thereof within which the projecting nose of said stop plate is adapted to enter to prevent the hammer from operating a perforating tool depending from said supporting plate to in front of said base plate, and a pivoted lever having a bifurcated end for lifting the tool out of the material for the spacing of apertures therein, said lever being pivoted by the nose projecting rearwardly from the stop plate, said perforating tool having a pair of horizontally disposed'discs near the upper extremity thereof, the portion of the tool between said discs being straddled by the bifurcated HENRY RUPPERT.

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