US404624A - Safety - Google Patents

Description

(No Model.) 4 T. J. HOLMES.

SAFETY APPLIANGE FOR STAMPING AND OTHER MACHINES. No. 404,624.. Patented June 4, 1889.

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UNITED STATES PATENT OFFICE.

THOMAS J. HOLMES, OF CHICAGO, ILLINOIS.

SAFETY APPLIANCE FOR STAMPING OR OTHER MACHINES.

SPECIFICATION forming part of Letters Patent No. 404,624, dated June 4, 1889.

Application filed August 9, 1888. Serial No. 282,306. (No model.)

To ail whom, it may concern.-

Be it known that I, THOMAS J. HOLMES, of Chicago, Illinois, have invented certain new and useful Improvements in Safety Appliances for Stamping or other Machines, of which the following is a specification.

The object of my invention is to provide for stamping or other machines, to which the material to be operated upon is fed by hand, suitable guards or appliances whereby the hand of the operator is forced out of the way of the moving parts of the machine without injury, and in time to prevent the hand being caught. I have selected, for the purpose of illustration and description, a soappress as a type of machines to which my appliances are peculiarly adapted.

In the accompanying drawing I have shown in perspective a soap-press and my safety device applied thereto.

In said drawing, 1 represents the base of the machine, 2 the table, 3 a bracket in which is formed vertical guides for a head-block or plunger 4, the latter carrying upon its lower end a die 5 adapted to enter a mold 6, which latter is secured upon the table 2, and in which mold a block of soap is intended to be placed. In this example the plunger and die are operated by means of aWorking-lever 7, having a foot-pedal 8, which is depressed by the operator to force the plunger down, and a weight 8 holds the plunger normally in its uplifted position.

In operating such a machine the attendant (usually a boy) places the blocks of soap one after another in the mold G, and'immediately strikes the pedal 8, depressing the plunger and forcing the die 5 into the mold. In this operation the attendant is required to get the thumb and one finger in line between the descendingdie and the edge of the mold; and as the movements are rapidly executed, he sometimes carelessly fails to remove the fingers until they are caught by the descending die, in which case they will either be cut off or mangled. To guard against this, I employ the safety device illustrated in the drawing, and which may consist, as there shown, of a rock-shaft 9, secured in suitable bearings upon the bracket 3, and carrying fenders 10, rigidly secured thereon. The rock-shaft has a rigid arm 11, and a link 12 is .pivoted thereto at one end, its other end being connected to the plunger 4 in any convenient manner, so that, as the plunger begins to descend, the arm will be rocked in its bearings and the fenders will be swung upward in the arc of a circle, indicated by dotted lines of the drawing, in time to force the hand of the operator out of the way before the descending die reaches the upper edge of the mold.

I do not limit my invention to the specific means above shown and described for operating the fenders, as it is evident that the rock-shaft may be connected to and operated by the operating-lever instead of by the plunger, or said fenders may be connected to and operated by other parts of the machinery with which they are designed to be used. It is also obvious that these safety appliances may be adapted to printing-presses, papercutters, and other machines of like character.

I claim A safety appliance for stamping or other machines having a reciprocating plunger, comprising, in combination with said plunger, a rock-shaft provided with fenders, a rock-arm rigidly secured to the rock-shaft, and a link pivotally connecting the rock-shaft arm with the plunger, whereby, when the plunger descends, the fenders are operated to force the hands of an attendant out of the path of the plunger, substantially as described.

THOMAS J. HOLMES.

Witnesses:

O. O. LINTHIOUM, T. D. BUTLER.

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