US2524090A - Safety guard for foot presses, power presses, and die sets - Google Patents

Description

o 1950 J. SWAN v SAFETY GUARD FOR FOOT PRESSES, POWER PRESSES, AND DIE SETS Flled Jan 8 1948 Emwm.

an 3 w a thereof.

i atented Oct. 3, 1950 "UNITED STATES PATENT OFFICE SAFETYGUARD FOR FOOT PRESSES, 1 POWER PRESSES, AND DIE SETS w Jacob Swan, Brooklyn, N. Y. 4 v Application January 8, 1948, Serial No. 1,118

2 Claims. (Cl. 74-614) This invention relates to a safety guard for 7 foot and power presses and die sets.

' It is an object of the present invention to provide a. guard which will be automatically swung outwardly each time the press is brought down so as tomove the hand and fingers of the operator outwardly automatically and at the same time to provide a guard to prevent the inward movement of the fingers or hand while the device is being operated.

Other objects of the present invention are to provide a safety guard for power and foot presses and die sets which is of simple construction, inexpensive to manufacture and efficient in operation.

For other objects and for a better understanding of the invention, reference m-ay be had to the following detailed description taken in connection with the accompanying drawing, in which Fig. 1 is a perspective view of a press ordie set having the safety guard of the present invention associated therewith.

Fig. 2 is a cross-sectional view, in elevation, taken through the connection of the swing safety guard with the press.

Fig. 3 is a top plan view of the safety guard showing the positions of the same when extended over the work and when swung therefrom.

Fig. 4 is a top plan view of a modified form of safety guard used for protecting two hands.

Referring now particularly to Figs. 1, 2 and 3, represents a press on which there is a movable member I I serving to perform work upon a work piece which may be extended under the same and upon a support 12, lying on the bed l3. Extend ing laterally from the press and from a fixed portion [3 thereof is an arm 14 which has a spring l5 on its enlargement I6 at the outer end This spring serves to angle a rod I1 extending upwardly through the enlargement I6 so as to bias an arm l8 towards an operative position. The arm l8 has an adjustable guard device l9 thereon which is secured by screws 21. These screws extend through an elongated slot 22 and can be loosened to permit the readjustment of the guard formation 19.

The work member I l is fixed to a slide 23 from which there is connected a strap 24 which in turn has an angle strap 25 adjustably connected to it. From the outer end of the angle strap 25 is a cam 26 which cooperates with the arm l8 to cause the outward movement of the arm l8 as the slide 23 is lowered. As the arm I8 is swung outwardly, the guard formation l9 will cause the fingers of the operator to be ejected from the region of the work element i1.

The guard formation I9 comprises spring strap pieces 28 and 29 which are secured together by fastening elements 3|. The strap 29 extends forwardly above the strap 28.

In Fig. 4, there is shown a modified form of the invention wherein the guard formation asindicated at 33 is designed to protect two hands. The guard formation 33 can be secured to the arm 18 in a similar manner to that in which the guard I9 is secured to the arm H3. The guard formation 33 has an additional arm 34 which extends to the opposite side of the working element. A portion 35 extends rearwardly tohave the same efiect as the portion or strap 29.

As the slide '23 moves downwardly, the arm I8 is automatically swung outwardly by the cam 26 so that the hands and fingers are displaced from the region of the working element H.

The portion 29 of the guard formation 28 is elevated from the main portion thereof so that protection will be given during the initial movement of the work element II. With the arm l8 being swung in and the member ll starting its downward movement, protection will be given by the portion or strap 29. As the arm l8 moves outwardly, the work element II will have been lowered sufiiciently so as to be guided by the lower or main portion of the strap 28.

The same effect is had with the guard formation 33, the part 35 being elevated and the guard 33 having the additional arm 34 at the same elevation as the lower portions of the guard formation 33.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

Having thus set forth and disclosed'the nature of my invention, what is claimed is:

1. A guard arrangement for foot presses and the like having a slide for reciprocating movement comprising a first arm extending from a fixed portion of the press, a second arm pivotally connected to said first arm for swinging movement of the second arm, a guard device secured to the free end of the second arm and means for adjusting the guard device in longitudinal direction on said second arm, one strap member secured to the slide of the press, a second strap member secured to said first strap member and both said strap members being disposed substantially in a horizontal plane, means for adjusting the second strap member on said first strap memher in longitudinal direction, a cam member se- 3 cured to said second strap member for adjustment on said second strap member in vertical and horizontal direction, said cam member being adapted to engage said second arm, and said guard device comprising a first strap element and a second strap element extending forwardly from and above the first strap elements, said strap elements being curved inwardly toward the work element and about one side thereof.

2. The guard arrangement, as set forth in claim 1, the guard device of which includes a third strap element which is secured to said first strap element and extends outwardly on the other sid of the work element.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 899,131 Pearson Sept. 22, 1908 1,164,943 Legat Dec. 21, 1915 1,659,974 Guyot Feb. 21, 1928 Grover July 25, 1944

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