US933397A - Punch. - Google Patents

Description

J. 0. SMITH. PUNGH. APPLICATION FILED P3316, 1909.

33 Patented Sept. 7, 1909.

. To all whom it mag concern:

0. SMITH, a citioutrun emi e- PATENT OFFICE.

.ihv. c. samura cr'unamszoo, nronrenn, Assmnor. no man mnmonn sren COM- 'PAN'Y, or KALAmAzoqmcmeAn.

PUNCH.

' Ismael... of Letters Patent:

Be it known that I JAYI zen of the United States, residing at Kalamazoo, Michigan, have invented certain new and useful Improvements in Punches, of-

which the following is a specification.

This invention relates to improvements in punches.

' The main objects of this invention are: First, tosprovide'an improved punch which is capable of very rapid and easy manipulation. Second, to provide in a punch an improved stripper mechanism in combination with the operating mechanismof the punch. Third, to provide in a punch an improved die supporting means.

Further obyects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplishthe objectsotmy invention by the devices and means describedin the :Eollowmg specification.

The invention 1s clearlyidefined "and pointedout in the claims.

A structure embodying the features-of my invention is clearly illustrated .in the accompanying drawing, forming a part of this specification, in which:

Figure 1 is a, side elevation of my improved punch. Fig. 2 is ahorizontal -sec tion taken on a line corresponding to line 2-2 of Fig. 1. 3 is an enlarged detail vertical section taken on a line corresponding .to line 33 of Fig. 1. Fig.4 is a detail plan or" the stri. per. Fig. 5is ia side eleva tion thereof. .ig. 6 is a detail vertical; sec-- tion showin means for terchangeab e dies.

In the drawings, similar reference characters meter to similar parts throughout the several views, and the'sectional views. are

taken ieokii-ig in the direction of the ilittle arrows at the, ends of the section lines.

' Referring to the drawing, the frame of my improved punch comprises a base 1, an overhanging arm portion 2, there being an, openang 3 between .the over-hanging ortion and the base for the introduction o the work,

ethebase a'rest for the work. This base is'ipreferab y set so "that its work-sup porting face 4' is in'alinement with theplane improved unch is espeof 12.1 tabgpas {a f h ciay a ted or e pun mg 0 s eet l I The overhanging arm provided supporting the v inh1g6 being preferably provided for the bearing, see Fig. 3. The plunger is pivotally which is mounted on the forward end of the arm 2 by meansofthe link 8. The operating lever 9 is arranged above the plunger lever 7, the operatin lever being pivoted at 10 upon the u war -y-projectin post 11 at the rear end 0 the frame. The Te 9 are connected by the link 12. A coiled spring-13 is arranged under the plunger "lever .to hold it normally elevated, thereby holding the die plunger normally in its rethis arrangement of the levers,,a very ipowerful lever e is secured, so that the punch can be .efli'ectively operated by hand.

The die plunger .5' is preferably provided with a threaded socket .14 to receive the threaded stem 15 oat the, die member 16. 'The advantage 'of this means of securing the which. are likely to be stripped ed in the operation of the punch, 'e'itherby lifiting the plunger too high, or by the projections engaging with the work. I I Thebase li's grovided with a vertical hole 17, which is ;ra beted at itsupper end to form a seatlS for the female die member, .as i9. These die members are seated inthe sup cart and canine readily changed as desire and this, connection with the means fordetachablysecuring the male die member by threading into the die plunger is a veiy eatnadvantage. which-is provided with .a seat 21 to receive a'die 22 ct smaller size, the object being to lessen the'amount of material in the die of smaller size, and one holder is adapted for hQldin-g several of the smaller'sizes of dies, the holder 20 being in efi'ect a filler member. 1 I preferab 23,1;he one illustrated being shown in the form of a ring. This stripperis supported in a pair of levers 24., one arranged on each side of the arm :2,the levers being pivoted .at 25 ,'their rear ends being connected by thelmks :26 to .the operating 1ever'29.' By this connection, the stripper is actuated in a direction opposite to the direction .of movement elf-the plnnger so that it serves to strip work iromthe plunger when the plunger Patented Sept. 7, 1909.

with a hearingitor the die plunger 5, a bush-- connected .at its upper end .to-the lever 7 tracted position. It will be obvious that by:

die being that. there are no projections.

a so preferably provide a die holder 20,

y, provide a stripper, as

vers 7 and is retracted. The stripper is preferably mounted upon the levers so as to be thrown to one side. or removed to permit the changing of the die. This I preferably accomplish by securing the stripper to one lever by a pivot 31, and providing an ear 27 on the that it can be swung on its pivot out of the way to permit the changing of the dies.

By arranging the parts as I have illus trated and described, I secure a punch which is capable of very rapid manipulation, one

.operator being able to efi'ectively handle the -work and operate the punch. The structure has the further advantagelof being simple and economical in. structure and is not likely I "to'get out of repair in use"; I have illus- "trated and'described the same indetail in the, form preferred by me on account of its structural simplicity and convenience of operation.- I am,'howe'ver, aware that it can be considerably modified in structura de tails without departing from my invention,

but as these mod fications will be readily understood by those skilled in the art to which this invention relates, I have not attempted to illustrate or describe the same herein.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent: J

1. In a punch, the combination with the I frame comprising a base and an overhanging arm, said base being adapted'to support a d1e sald arm having a plunger bearing therein; a die plunger; a plunger lever to which said plunger is pivotally connected; a supporting link for said plunger lever 1 link therefor to said .normally supporting the plunger in its renecting for said stripper lovers to said operatmg lever.

arranged at the forward end of said frame arm; an operatin lever pivotally mounted at the rear endo said frame; a connecting plunger lever a spring tracted ositlon'; a stripper; a pair of levers on who SflltiStIlgJPGT is mounted, arranged one at eachside 0 said frame arm and con- 2. In a punch, the combination with the 'frame comprising a base and an overhanging arm, said base being adapted to support 'a'd1e, saidarm-having a p unger bearing therein; a dle plunger; a plunger lever to which said plunger is pivotally connected; a supporting zli'nk for-said plunger lever arranged at the forward end of said framearm; an operatin lever pivotally mounted at the rear end 0 said frame; a connecting link therefor to said plunger lever; a spring normallysupporting the plunger in its retracted POSltlOIl; a stripper; anda connecmovement of the plunger.

tion between said plungerand stripper for moving said stripper, in the direction opposite to the movement of said plunger.

In a punch, the combination with the frame comprising a base and an overhanging arm, said base being adapted to support a die, said arm having a plunger bearing therein; a die plunger; a plunger lever to which said plunger. is pivotally connected; ,a' supporting link for said ranged at the forward en of said frame arm; an operating. lever pivotally mounted at the rear end of said frame; a' connecting link therefor to said plunger lever; and a spring normally supportingthe plunger in its retracted position.

arranged one at each side of said arm; and

connecting links for said stripper levers to said operating lever.

overhanging member, said base being adapted to support a die, said overhanging member having a plunger bearing thereon; a die plunger; a lever to which said plunger. is connected; a second lever; a connecting link therefor to the free end of the other lever; a stripper; a lever on which said stripper is mounted; and a connecting link for said stripper lever to said second lever.

6. A punch comprising a base and an overhanging member, said base being adapted to support a die, said overhanging member having a' plunger bearing thereon; a die plunger; a lever to which said plunger is connected; a second lever; a connecting link therefor to the free 'end of the other lever; a stripper; and a connection between the said plunger and stripper for moving the stripper 1n the direction opposite to the movement of the plunger.-

7. A sheet metal punch comprising a base and an overhanging arm, said base having means for supporting a die; a plunger movable through said arm, said plunger having a die receiving opening; a lever hinged to the arm, at one end and connected with the plunger; a second lever hinged-by one end to the arm; a link connectingstid second lever'with the free end of the other lever; a spring normally retaining the plunger in elevated position; a stripper coiiperating with the plunger; and a connection between the plunger and the stripper for moving the stripper in the opposite direction to the 8. A punch comprisin a bracket, having a base portion provide with an opening 5. A-. punch comprising a base and an 'therethrougln the opening being rabbetedat its upper end erating the plunger; I tweenthe 'p'11 1n'gerand the stripper j'fon Op i a rmg through qwhmh the :plunger: moves 5 and a CODIIQCUIQII betxyeenthe plunger mov= mg means'alid the 7 able die die belowthe plunger;

ing for recelving adiegand means for supportlngaflle below the plungerhmeansifor tion 'wlth the plunger ing the lnovelnentiof thepl 40 I "porting a die to eoa'ct vi ith said plunger die;

registering wit-h theqopeningv through the; base; a plunger movabl'ein the'said opening or receiving a die, and an overlying portion. provided with :an opening for receivin a; punch;

1 afgstripper for. onoperating with" the pl unger; means .for' op- ;and.' a" conneetion bemovingthe striper infthe opposite direc tion to the-movement oi the pIunger; a

9. A punch omprising a vertically mov able "die plunger, providedwith a threaded to receive a ie, and'means for sup-\ porting ajdie belowthe plunger; means for moving the, plungerg a stripper comprising ma direction -0 the plunger p v 711. A punch comprising avertically mow able plunger, provided with a threaded open moyihg the plunger; a stripper'in eonnec .7 and a bonnectlon be tweenthe stripper and the .piunger for mov the strip per in the opposite direction? td unger. I I

[12. A punch comprising'fa die plunger provided .with 111ei1ns"for .detachably securinga die thereto means fofremovablysupmeans for actuatingthe plunger; a stripper a pair of stripper supporting member said be; released pivot; and eonneetions for the [supporting members to "the plunger-actuat ingnieahs for moving posits" direction to the movement o f t'he plunger.

hand and seal nesses.

-*Ztripper being connected toone of Said mme nect'edtov .be lreleased' and swung to one side onits said I pit-'otyandeolin'ections for-the said stripper 5,0

supporting members to theplnnger-actu'ating means for movingtthe' stripper in'the-"opposite direction to the movement rs by a plvot and being -de tachably con? the oth r member whereby itmay.

of the plunger.

13. Apuflch Comprising a die plunger I means for actuatingthe plunger; a'stripper 5* apa-lrf of stripper s'upporting members, said;

"strip erbeing- (eonneeted to one Ibers. y a I nected to the other" member 7 w of 'said mom pivot and being, detachabiy conwhereby it may to"o1 1 e side o'n its said-stripper and swung the stripper in-the op means for actuating the plunger-31a stripper a" .pair" of stripper supporting levers, said stripper being connected. to one of said levers y a pivot and being detach'ably connected to thexnther lever whereby it may be releasedand swung to'pn side g, and connections for ,the said stripper levers 'ating means for movingthe -stripper in the 1 opposite direction to the mov'ementof the to the plilnger-actw fplungerw ,7 15. A punch comprising a" die'plunger means for actuatingthe conneetions for thesaid; stripper levers :to ,the plunger-actuating V v stripper in the opposite direction to "the" movement of-thep 'lunger.

plunger; a stripper: pair of strippersupporting levers; and

means for moving the" lereof, I hate hereunto set-'1hy in the presenceof two ,w1t 8F gJAY. SMITH .[L. s.-] Witnesses; v

iCI iARA E.IIB RADEYN,5 v

- FWGIEIRTRUDE Tang/[An

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