US1166591A - Guard for presses. - Google Patents

Description

n. F. IDE & M. WEST.

GUARD ron PRESSES. APPLICATION FILED MM- 7, 19:4.

Patented Jan. 4, 1916.

2 SHEETS-SHEET l n. F. lDE & n. M.WEST.

GUARD FOR PRESSES. APPLICATION man MAR. 1, m4.

1,166,591. Pate ntedflJ'zinA, 1916.

2 SHEIETSSHEET 2.

WWW 5 7' W ROY F. for: AND ROBERT M. w'nsr, or DETROIT, MI HIGAN.

GUARD son rnnssns.

Application filed March 7, 1914. Serial No. 823,070.

To all whom it may concern:

Be it known that we, ROY F. Inn and ROB- nn'r M. V fns'r, citizens of the United States of America, residing at Detroit, inthe county of \Vayne and State of Michigan, have invented certain new and useful Improvements in Guards for Presses, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a guard for presses or similar machinery for the purpose of protecting the hand and arm of the operator thereof from accidental injury.

The particular form herein disclosed is shown in conjunction with a printing press although it may be adapted for use with 'tremities of the latter.

any machine which has cooperating plates or jaws which swing or move the one toward the other. l I

The invention consists in the matters hereinafter set forth and more particularly.

pointed out in the appended claims.

Figure 1 is a view of a press provided with a guard embodying features of the invention; and Fig. 2 is a View in detail of the guard removed from the members.

Referring to the drawings a pair of oppositely disposed bars 1 of any convenient type that afford proper guidance for a pair of reciprocating members 2, arranged to be secured as by cap screws 3 or the like on the margins of a platen 4 of standard type.

printing press 5 that is herein shown dia grammatically with parts omitted. A pair of lever arms 6 are pivoted at their inner ends to suitable blocks 7 which are arranged to be adjustably clamped as by set screws 8 to a suitable part of the press. Links 9 articulate the guide members 2 to the lever arms 6, pivotal connection 10 between the' links and levers being between the ex- Anti-friction rollers 11 or other suitable means are arranged on the levers to lie in the planes of movement ofa pair of knock off arms 12 each of which is clamped to a moving member 13 of the press. This member may be any part which is so disposed that when the platen 4 approaches its cooperating member indicated at 14, the engagement of the arms with the rolls 11 operates the levers 6 and the guides 2 to move the latter up and thereby raise a guard 15 which connects the correspond ing portions of the guides 2. This guard rod is so actuated that it underlies the. arm

effect this operation.

of the operator whenthe latter is engaged in feeding the press and thereby throws the same upwarda sufficient distance to. withdraw the hand from the space between the platen 4: and the cooperating member 14:

when the press is about to make an impress, the device being so timed that removal of the operators hand is effected in ample season to prevent ln ury. The parts are here shown as if returning by gravity to the original position when the press opens. understood that springs or counterweights It is to be Specification ofIIette'rs Patent. l Patfited Janfli, l l i may be added if desired to more positively construction a machine of this type which 1S equipped .wlth a guard of this character cannot injure the operator when the latter.

is feeding the machine in the usual manner as the device pushes the hand away and positively prevents admission or retention of the hand in the danger zone.

As a result of this One feature of the device isits adjustabill ity to, presses and machines of difierent types, the disposition of the parts being such that adjustments to obtain different speeds of movement arejfeasiblea Obviously, changes in the details of construction may be made without departing from thespirit of our invention and we do not care to limit ourselves to any particular form or arrangement of l parts. What we claim is 1. A guard for presses and similar inachines that have cooperating members reciprocable toward and from each other comprising guides adapted to be secured to one of the cooperating members, an arm lifting guard bar, members reciprocating in the.

guides and carrying the guard bar, members adapted'to be pivotally attached adjustably to a press or the like and articulated to the reciprocating members, and lznock off mem bers adjustably secured to the other cooperating member and adapted to intermittently move the members articulated to the reciprocating members.

2. The combination with a machine having cooperating members that move to and from each other on a main frame with guides adapted to be secured to one of the cooperating members, an arm lifting guard bar, members reciprocating in the guide and carrying the guard bar, pivot blocks adapt- 'li ed to be a'djustably secured to astationary part of the machine, lever arms pivoted at their inner ends to said blocks, links connecting the reciprocating members each In testimony whereof We a'lfix our signa- With a companion lever, antifriction rollers tures in presence of two Witnesses. acljustably mounted on the outer ends of the ROY F. IDE. levers, and knock off arms carried by the ROBERT M. NEST.

" other reciprocating member adapted to in Witnesses:

termittently oscillate the levers simulta- G. R. STICKNEY, neously. A. M. DORR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images