US2334130A

US2334130A - Safety device for foot kick presses

Info

Publication number: US2334130A
Application number: US477324A
Authority: US
Inventors: Christian J Schuhmann
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-02-26
Filing date: 1943-02-26
Publication date: 1943-11-09
Anticipated expiration: 1960-11-09

Description

9} 1943. c. J. SCHUHMANN SAFETY DEVICE FOR FOOT KICK PRESSES Filed Feb. 26. 1943 INVENTOR.

CHRIST/41V 7: SC UHMA/V/V BY 1 I a I I ATTO NEY Patented Nov. 9, 1943 SAFETY DEVICE FoRiFooT? KICK PRESVSES l Christian J.Schuhmann,lBrooklyri,N. Y. V Application-February:26, 1943,"Serial No. 477,324

3-Claims. (01. 1924-131) 5 i This invention relates to new and useful immovementsin foot kick presses, and has more particular reference to a safety device which makes it impossible for an operators hand 'to be caught in the press. 1 I l More particularly; the invention proposes to characterize the safety device by abolt which normally locks thehead of the press fromclosbolt M for retracting the bolt to free it from the head I l which then may be moved downwards.

A latch is provided for holding the handle I6 from being moved and this latchincludes an operator handle [1 adapted to be gripped with the other hand andmoved for releasing said handle IE.

Thehandle' lii is supported by a screw I8 01' other support element which passes through an ing, and handles which must be gripped by the operators hands and manipulatedto release the bolt for allowing closing of the press. 1 5

The "invention proposes anew construction in which one handle which must be gripped by one hand, and locks another handle which must be gripped by the other hand. The first referred to handle is first operated, releasing the second handle which is then operated to withdraw the bolt.

The invention also proposes an arrangement for.immediatelyre-locking the head of the press when it reaches its-raised position and when the operator releases the handles.

For further comprehension of the. invention, and of the objects and advantages thereof, reference will be had to the followingdescription and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a mate- 7 rial part of this disclosure:

Fig. 1 is a side elevational view of a foot kick press constructed in accordance with this invention.

Fig. 2 is a fragmentary enlarged elevational view looking in the direction of the line 2-2 of Fig. 1.

Fig. 3 is a plan view of Fig. 2 with certain parts broken away to disclose interior parts.

Fig. 4 is a fragmentary enlarged sectional view taken on the line 4-4 of Fig. 2.

Fig. 5 is a fragmentary enlarged sectional view taken on the line 5--5 of Fig.3.

The safety device for'foot kick presses, in accordance with this invention, is used in conjunction with a press Ill having'the usual vertically slidable head ll, slidable in the frame 12 of the press and controlled with a foot kick lever l3. Further details of the press will not be given in this specification as it forms no part of this invention.

The safety device includes a bolt M slidably mounted forwards and rearwards of and on the frame l2 of the press. This bolt engages a keeper or keeper opening 15 on the slidable head ll of the press for latching said head in its raised 13051". tion. A handle lBis provided connected with the the inner end of the handle 16 locking the latter from being moved. The handle I! may be pivotopening in the handle and which is mounted on a boss l9. This boss |9has an inclined outer end 20 which limits pivoting of the handle [6 from the full line position shown in Fig. 3 to the dot and dash line positionindicated by reference numeral IS. The inner end of the handle l6 has an elongated opening 2 l' which engages over the outer end of the bolt M. A pair of headed pins 22 are mounted upon the outer end of the bolt [4 and engage slots '23 formed in thesidesfof'the handle I6, Thebolt I4 is slidably mounted in a casing which is attached on the front of the frame l2. .Theconstruction is such that the free end of the handle lfi'may be pressed rearwards to.

pivot the handle so that its inner end moves outwards and thismotio'n will pull the bolt, M forwards, disengaging it from the head I l. A spring 25 is coaxially mounted on the bolt l4 and acts between the front wall of the casing 24 and a flange 26 mounted on the bolt M. This spring 25 resiliently urges the bolt to its rear operative position.

The latch for holding the handle l6 includes said handle I! which is swivelly mounted by a screw 28 or other fastening element. A spring 29 is connected between the handle I! and the-casing 24 and urges the handle I! into its operative position against a pin 30 mounted on the front wall of the casing 24. In this operative position, the inner end of the handle I1 is engaged over ed, as indicated by the dot and dash lines [1" in Fig. 2 so that its inner end is moved free from a The latter is the inner end of the handle l6. then free to be operated. 1 The operation of the safety device is as fol ows:

As-illustrated on the drawing, the head ll of the press is inits locked position. The material to be out or stamped out is engaged between the dies of the press. The operator cannot kick the lever I3 for operating the press because the head of the press is locked. The operator must now grip the handles l6 and IT. Then the ban dle I! must be pivoted to the position indicated by the line l1. This frees the handle l6 which must then be pushed to the position indicated by the dot and dash line Hi. This withdraws the bolt l4, and the operator may now kick the lever I3 to operate the press. It should be noted that it is impossible for the operator to catch his hands in the press since they are busy holding the handles l6 and I1 and are no place near the dies of the press.

After the lever Iii has been kicked and released the operator releases the handles l6 and I1 to move the material being stamped. The spring 25 immediately moves the bolt l4 rear! wards which catches into the key opening [5 j of the press head I I when the press head reaches its fully raised position, The spring 29 cannot return the lever I! to its initial position because its inner end will rest against the end of the handle I6, until such time that'lthe bolt [4' moves rearwards Then the spring 29 will. pivot the a handle against the inner end of the handle I6 and they safety device is now in "condition to op-' erateagain. I r

,While I" have illustrated and described the preferredembodiments of my invention, it, is to be understood that I do not limitmyself to the precise constructions herein disclosed and the right, is'reservedto all changes; and modifications coming within the scope of the invention as definedxin the-appended claims. 'c e 7 Having thusdescribedmy invention, what I claim as new, and desire to secure by United StatesJLettersPatent is: I p I.

-1. In combination vwith a foot-kickpresshaving a; slidable head working in' a frame. and controlled with a foot-kick lever, a bolt 'slidably mounted forwards and rearwards of and on said framejand engaging a keeper opening on said head for latching said head in its raised position, a, handle adapted to be gripped with one hand and moved for retracting said bolt, and a latch for holding said handle from beingmoved and having an operator handle adapted to be gripped with the other hand and moved for releasing said first named handle, said first named handle being supported by a supporting element on a I member having an inclined face which limits hinging of the handle on its support, the inner end of said first named handle having an opening engaged over the front end of said'bolt, and fastening elements mounted on the bolt and en gaging slots in the inner end of said handle.

2. In combination with a foot-kick press having a slidable head working in aframe and controlled with a foot-knick lever, a bolt slidably mounted on said frame to move forwards and v rearwards thereof and engaging a keeper open- :ing on said head for latching said head in its raised position; a handle having'one end attached to said keeper and pivotally mounted in- .termediateof its ends so that its attached end t'o withdraw said bolt, and a latch having one freeing it to be movable forwards, saidhandleibewill move forwardsand rearwards of said frame end engaged over the attached end of said handle preventing said handle from being pivoted forwards and being turnably mounted tomove laterally off the attachediend of 'said: handle freeing it"to be movableforwards; i

3'. In combination with a foot-kick press liav ing a slidable head Working in 'a'frame and controlled with a foot-kick lever, a bolt? slida'lily mounted on said frame to move forwards ln'd rearwards, thereof and engaging aikee'per opening on said head for latching said head in its raised position,:a handle having one 'endattached to said keeper and pivo'ta'lly mounted in termediate of its ends so that itsfattached endwill move forwards and rearwardsof saidfranic] to withdraw saidbolt and a latch havingc ine"",fv end engaged over the attached end of said han I dle preventing said handle from being pivoted forwards and being turnably mountedto move laterally off the attached end of said h'andle ing pivotally mounted on a member having'ita front face inclined slightly laterallyand lre'ar wards: limiting pivoting of said handle to a for- Wardand rearward directions. 1-,

CHRISTIAN J. SCHU- I