US1543661A

US1543661A - Punch-holder jack

Info

Publication number: US1543661A
Application number: US757456A
Authority: US
Inventors: Emil A Baumbach
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-12-22
Filing date: 1924-12-22
Publication date: 1925-06-30
Anticipated expiration: 1942-06-30

Description

June 30, 19.25.

, ZI j E. A.' BAUMBACHv mmm:v Homan Jkcx s Fi1eamc.2. 1924 Patented .une 30, 1,925.

AUNITEDs'rni'riisl PATENT OFFICE.

EMIL A. BAUMBAGH, or CHICAGO, ILLINOIS.

`PUNCH-IjIOLlDEllR JACK. v

Application filed December 22, y192A'. YSerial.1\To.1757,1156.

To al whom t may concern.' l

Be it lznown that I, EMILA. BAUMBACH, a citizen of the United States., residing lat Chicago, in the county of Cool: and-:State of Illinois, have invented new and useful Improvements inV Punch-Holder Jacks, of which the following is a full, clear, concise, and exact description, reference being had to the-'accompanying drawing, forming a part of this specification.

Myinvention relates to a punch holder 'aclnmf i One lof ythe objects of` my invention is to provide a jack for separating the punch holder from the die-shoe. l f

A further object is to providezsuch a jack which will be easy to manipulate and by meansrof `which the punchv holder can be raised by successive steps to separate it from the die shoe.

Further objects will appear Afrom the description and claims.

In the drawings, in which my invention is shown Figure 1 is a perspective view showingv being inserted into position to lift from the die shoe; View showing the Jack the ack the punch holder Fig. 2 is a side in lifting position;

Iig, 3 is a plan View of the jack with parts broken away. A

The construction shown comprises the punch holder jack for lifting the punch holder 11 awa)7 from the die shoe 12. In making dies, the die maker has to do a good deal of cut and try work and in doing this it is often necessary to bring the punch holder up to the die shoe and lift it up again and repeat this until the punch and die have been fitted and adjusted so as to cooperate properly. If the die shoe is provided with leader pins cooperating with holes in the punch holder, it may require considerable force to separate the punch holder from the die shoe, particularly if the punch holder is heavy. Often a crowbar is used for this work which is awkward and takes considerable time.

My improved jack comprises a lever .13 having lifting arms 14 insertable under the punch holder 11 between the punch holder and die shoe and a pendant supporting dog 15 pivotally connected to the lever intermediate the lifting arm and handle, this pendant having a series of foot portions 16 anyynected to said lever one of which canengage the dievslioe whereby the punch vholder can be raised step by stepV by successively engaging Succeeding foot lportions with the3die shoe.V y j K' y The jack is provided with Vstop meansffor limiting the distance to `,which'the` lifting arms can be inserted b etweenfthey punch holder and the die shoe. In the form shown, these meanscomprise an upward extension 17 of the pendant dogfwhich up\ v ard extension engages the distancepto which the lifting arm can be fin'- serted. This. serves to definitely position the lifting armand insure the properI positioning of the lever and ldog with respect tothe die shoe and punch holder. The upward extensionis so designed that whenV the lifting arms are insertedl as far as they will go, the point of engagement f the engaging foot portion with the die shoe will be substantially underneath the pivot pin 18 connecting the lever and pendant or nearly enough so that the pendant and lifting arms will not be forced to slip when pressure is insert-ed on the handle.

p unch holder and liini'ts the l. y

The pendant dog may be provided with a sary.

lVhile I have shown but one form of my invention, it is to be understood that I do not desire to limit myself to this particular construction since many changes and modications may be Amade therein without departure from the scope of the following claims.

I claim:

1. A punch punch holder a lever having a lifting arm insertable under the punch holder between the punch holder and die shoe and a handle portion, and a pendant supporting dog pivotally conintermediate the liftingV arm and handle and having a series of foot portions, any one of which can engage the die shoe whereby the punch holder can be raised step byV step by successively engaging succeedingr foot portions withv the die shoe, said jack being provided with a stop for limiting the distance to which the lifting arm can be inserted between the punch holder and die shoe. f

holder jack for separating the from the die shoe comprising 2. A punch holder jack for separating the punch holder from the die shoe comprising a lever having a lifting arm insertable under the punch holder between the punch holder and die shoe and a handle portion, and a pendant supporting dog pivotally connected to said lever intermediate the lifting arm and handle and having a series of foot portions, any one of which can engage the die shoe whereby the punch holder can be raised step by step by successively engaging succeeding foot portions with the die shoe, said supporting dog having a stop portion extending above said lever for limiting the distance which the lifting armv can be inserted between the punch holder and die shoes. 3. A punch holder jack for separating the punch holder from the die shoe comprising a lever having a lifting arm insertable under the punch holder between the punch holder and die shoe and a handle portion, and a pendant supporting dog Vpivotally connected to said lever intermediate the lifting arm and handle and having a series of foot portions, any one of which can engage the die shoe whereby the punch holder can be raisedstep bystep by successively engaglng succeeding foot portions with the die shoe, said supporting dog having a stop portion extending above said lever for limiting the distance which the lifting arm can be inserted between the punch holder and die shoe, the portion of said dog above the lever extending away from the punch holder to serve as a counterweight to hold the foot portion toward the die shoe.

4. A punch-holder jack Afor separating a punch holder from a die shoe comprising a lever having two spaced lifting arms to be inserted under the punched holder between the punch holder and die shoe, and a handle portion, and a pendant supporting dog pivotally connected to said lever between said lifting arms and having a series of foot portions, any one of which can engage the die shoe, whereby the punch holder can be raised step by step to successively engage succeeding foot portions with the die s oe.

In witness whereof, I have hereunto subscribed my name. Y

EMIL A. BAUMBACH.