|Publication number||US2077232 A|
|Publication date||Apr 13, 1937|
|Filing date||Oct 22, 1934|
|Priority date||Oct 22, 1934|
|Publication number||US 2077232 A, US 2077232A, US-A-2077232, US2077232 A, US2077232A|
|Inventors||Grahek Sr John|
|Original Assignee||Grahek Sr John|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (5), Classifications (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
April 3, 1937. J. G AHEK, Si; 2,077,232
TEMPLATE AND PUNCH THEREFOR Original Filed Dec. 4, 1931 fly- 5 f 5 :4 49
INVENTOR Patented Apr. 13, 1937 UNITED STATES PATENT OFFICE Substitute for application Serial No. 578,932, De-
cember 4, 1931. This application October 22,
1934, Serial No. 749,492
This invention relates to improvements in gasket or washer punching devices, and it is the principal object of my invention to provide a template for same accommodating small shop keepers and garages or repair plants with a handy outfit to make gaskets or washers for different purposes by hand and of any suitable sizes and materials.
This application is a substitute for one filed 1() December 4, 1931, Serial No. 578,932, which has become abandoned.
Another object of my invention is the provision of a template for punching gaskets and washers consisting of two plates hingedly connected at one end between which the gasket material is placed, and each provided with a plurality of holes of varying diameters according to the size of gaskets to be punched out of the material.
A further object of my invention is the provision of a template and punch of simple and inexpensive construction, and yet durable and efficient in operation.
A still further object of my invention is the provision of a template allowing the use of a plurality of punching tools for punching first the inside holes and then the entire gasket from the material.
These and other objects and advantages of my invention will become more fully known as the description thereof proceeds, and will then be specifically defined in the appended claims.
Referring now to the accompanying drawing, forming part of this application, and. wherein like reference characters indicate like parts:
Figure 1 is a top plan view of the assembled template in accordance with my invention.
Figure 2 is a vertical section on the line 22 of Figure 1.
Figure 3 is a top plan view of the bottom plate of the template.
Figure 4 is an elevation of one of the punch handles with a punch assembled therein.
Figure 5 is a similar View to Figure 4 with the punch omitted.
Figure 6 is a side elevation of one of the punches.
Figure '7 is a top plan view of Figure 6.
In the drawing, the numeral l2 represents the lowermost plate of the template upon one end of which are integrally formed two pairs of spaced upstanding ears or lugs 26 for the reception, between each pair, of the lugs l6 extending forwardly of and attached to one end of the upper plate ll] of the template. These lugs are providedwith elongated extensions l1 thereupon for more secure attachment to the plate and it will be noted that the bottom portion of these lugs extend downwardly beyond the end of the plate H! to a plane with the bottom thereof; this being for the purpose of insuring ample stock about the vertically elongated holes l5 in said lugs IS.
The pintle I4 is fixed within the two pairs of lugs 26 transverse the end of the template assembly and through the vertically elongated holes I5 in the lugs l6 so as to permit of vertical adjustment of the plates when prone upon a bench or the like for the insertion of the material from which the washers or gaskets are to be punched and yet not interfere with the proper alignment of the holes in the two template plates.
The punch handle, as illustrated in Figures 4 and 5, is preferably of cylindrical form, with an enlarged central portion I8, a reduced or stepped portion [9 for reception of the blow from a hammer or other tool used in energizing the punch, while at the opposite end the stepped portion is tapered as at 20 and hollow for the reception of the shank 2| of the punch. Transverse this tapered portion 20 and to one side of the bore therein, is a small pin or cotter hole 22 for the reception of a fixed cotter or pin, and the shank 2| of the different punches is flattened upon one side as indicated at 23 so that when the shank is positioned within the bore of the handle this fiat portion of the upper end of the shank will readily pass the pin in the hole 22, and as the lower end of the flattened portion is provided with an annular groove 24 about the punch shank, the punch may be readily turned one way or the other to prevent its accidental dislodgment from the handle. The punch head being circular and of a size to fit a correspondingly sized hole, if at all larger than the lowermost tapered portion 20 of the handle, provides a shoulder as at 25 for impingement of the terminal end of such tapered portion to take the blow of the punch when struck for example with a hammer. For the holes smaller than the terminal end of the tapered portion of the handle it is deemed that the blow received in the punching operation will be sufiiciently cared for upon the uppermost end of the shank 2|; the cutting end of the punch, of course, being of the diameter to register with the hole as predetermined.
Thus it will be seen that I have provided an exceedingly simple combination of template and punch for the making for examplev of sixteen different sizes of washers or gaskets, and resulting in a device occupying the least possible amount of space. The interchangeable feature of the punches provides for the making of gaskets with any size axial hole therein, and consequently an exceptionally convenient shop tool is provided.
In use I lay the template plates fiat on a workbench or the like and lift the top plate to allow the insertion of the material from which the gaskets or washers are to be punched. Then 10 lower the top plate against the material holding it between the plates. r
I now take a punch of the desired size and insert it into the punch handle, securing it therein as previously described. Then I punch the 15 inside hole of the gasket to be punched first, and then select a punch of the desired size of the outsideof the gasket, insert it into the punch handle, position the gasket material so that the hole punched is in the center of the hole to be 20 punched, and then punch out the latter, thereby forming the gasket.
Having thus described my invention, what I claim and desire to secure by Letters Patent, is:
1. An apparatus for punching gaskets by hand, comprising a lower base plate having a plurality of series of openings therethrough of progressively increasing diameters in opposite directions, an upper plate hinged to the lower plate and having corresponding openings adapted to register with the openings in the base plate and said hinge connection allowing for a slight vertical movement of the pivot of the upper plate relative to the lower plate to compensate for the thickness of the material between the plates, whereby the walls of the registering openings in the plates are in perfect parallel alinement.
2. An apparatus for punching gaskets by hand, comprising a lower base plate having a plurality of openings therethrough, an upper plate hinged to the lower plate and having corresponding openings therethrough adapted to register with the openings in the base plate, and said hinged connection allowing for a slight vertical movement of the pivot of the upper plate relative to the lower plate to compensate for the thickness of material placed between the plates, whereby the Walls of the registering openings in the plates are in perfect parallel alinement.
JOHN GRAHEK, SR.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2949292 *||Oct 29, 1957||Aug 16, 1960||Ibm||Perforating apparatus|
|US3727906 *||Nov 12, 1970||Apr 17, 1973||Warren J||Work holding fixture|
|US5156426 *||Apr 18, 1991||Oct 20, 1992||Graves Alice M||Needle guard|
|US6560891 *||Nov 21, 2001||May 13, 2003||Ek Success, Ltd.||Punch tool alignment device|
|EP1358975A2 *||May 23, 2002||Nov 5, 2003||DN Craft Corporation||Punching device|
|U.S. Classification||269/87.3, D19/39, 269/254.00R, D19/72, 269/254.0MW|
|International Classification||B21D53/16, B21D53/20|