US992771A - Stamping and other press. - Google Patents

Description

W.-H. HIBBARD.

STAMPING AND OTHER PRESS.

APPLICATION FILED JUNE 4, 1909.

Patented May 23, 1911.

5, h "Arro/m r UNITED STATES OFFICE.

WILLIAM H. HIBBARD, or BROOKLYN, NEW YORK, AssIGNon .To w. H. 3131mm) MFG CO., OF BROOKLYN, NEW YORK, A. CORPORATION OF NEW YORK.

( STAMPING AND OTHER PRESS.

To all whom it may concern:

Be it known that I, WILLIAM H. HlBBARD,

a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and'useful Improvements in Stamping and other Presses, of which the following is a specification.

The invention relates to improvements in 5 presses, such as are employed for stamping up metal and the like, and it consists in the novel features, arrangements and combinations of parts hereinafter described, and

particularly pointed out in the claim.

The object of; this invention is to provide the presses with safety devices for prevent-j ingthe operatives from having their hands or armsdnjured, as so frequently happens, bynot removing them quickly enough from below the slide of the press.

In carrying out my invention,-I provide the press with a rod or guard in other form for pushing outwardly from below the slide,

the hand or arm of the operative, should.

the same bejleft. below the slide, said means moving across under the slide and toward movementof the slide returning to a tion in rear of the vertical planeofthe same.

The means forcarrying out my invention may be modified in some respects without departing from the spirit and scope of the invention, since the purpose is to equip presses. with means which will pass below the slide and drive from such location. the hand or arm of an operative, if left there, during each downward movement of the slide, and recede to its inoperative or rear position during each upward movement of the slide.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, inwhich: 1

Figure l is a rear elevation, partly broken away, of a pressof ordinary construction equipped with safety devices embodying my invention; and Fig. 2 is a vertical section of the same on the dotted line 22 of Fig. 1, the safety devices being shown in their normal inoperative position by full linesand in their operated-position by dotted lines.

Specification of Letters Patent. Application filed June 4,-1909. Serial No. 500,084.

Patented May 23, 1911.

Int-he drawings, ,10designates the frame of a press, 1l't he bed-plate thereof and 12 the usual sl-ide, adapted to carry the male die. Thepress need not be specifically described since it is of usual construction and my invention has to do with safety-devices adapted for applicat on to presses already in use or to presses to be built for use.

Referring to Figs. 1 and 2, 14, 15 designate two corresponding pivotally mounted crank-arms connected at their lower portions by a transverse rod 16 which constitutes the medium for pushing from below the slide 12, on its descent, the hand of the operative should the same be left below the slide. The crank-arms 14, 15 are pivotally secured by bolts 17 to rearwardly ex-;

tending arms 18 of a bracket 19 carried by the "slide 12, said bracket being secured to. the slideby means of a bolt 20 and preferably being rendered vertically adjustable by having a slot 21 through which said bolt passes. The crank-arms 14, 15 are of irregular shape and considering them in their no mal inoperated position shown by solid 'lines in Fig. 2, they each have a vertical section 22 extending downwardly from the bolt" 17 a rearwardly'and downwardly inclined section 23 of less width than the sec tion 22, a downwardly and forwardly in 1 c'lined section 24, a laterally extendingsection 25, and a downwardly extending terminal section 26. The transverse .rod 16 is adjustably secured on the sections 26 of the crank-arms 14, 15. The crank-arms 14,

15 at the lower ends of their upper sections 22, are pivotally secured, by bolts 27, to the upper ends of the links 28, whose lower ends are pivotally secured, by bo 29, to the side frames of the press'in res j-of the vertical plane of said bolts 27.

It may be seen onreference to Fig. 2that the transverse rod 16,when the slide 12 is up, stands in rear of the vertical plane of the same and suitably above the bed-plate 11,

When the slide 12 descends to perform its' work, the bracket 19 and arms 14,15 are carried downwardly by the same, and at such I time said arms are rocked forwardly by the turning toward the front of the upper ends of the links 28, as indicated by the dotted.

lines in Fig. 2, with the result that during the descent of the slide, the rod 16 isdriven forwardly below thesamein a path to force the hand of the operative, should it have been left there, forwardly from the danger zone. Upon the return of the slide 12 to its upper position, the arms 14:, 15 are carried upwardly thereby and at the same time rocked rearwardly to their initial position, carrying the-rod 16 to a location in rear of the vertical plane of the slide, by the links 28. With each downward movement of the slide 12 the rod 16 is driven forwardly below and beyond the same, and with each upward movement of the slide said rod is carried rearwardly below the same to its initial position. The forward movement of the rod 16 is to prevent the hands of the operative from remaining below the descending slide and to thereby avoid the accidents which have so frequently occurred by the carelessness of operatives in not withdrawing their hands clear of the descending slide and die carried thereby.

What I claim as my invention and desire to secure by Letters-Patent, is;

Incombination with a stamping press and the like, a safety device comprising two' crank-arms pivotally secured at their upper ends to the slide and carrying at their lower ends a connecting transverse rod, and links pivotally securedat their lower ends to fixed parts of the press and at their upper ends to said arms, whereby on the descent of the slide said rod will-be rocked forwardly below the same and on the ascent of the slide returned to its initial position; substantially as set forth.

Signed at New York city, in the county of New York and State of New York, this 3rd day of June A. D. 1909.

WILLIAM H. HIBBARD.

Witnesses:

ARTHUR MARION, CHAS. G. GILL.

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