US1204473A - Safety-guard for cutting-machines. - Google Patents

Description

. J. A. MOORE.

SAEETY GUARD FOR CUTTING MACHINES.

APPLICATION man APR. 14. 1915.

Pat-nted Nov. 14,1916.

$13 11% ation 1c v State'of New FEE.

JAMES anrnun Moons, or new v'onK, N. Y.

SAFETY-GUARD FQB CUTTING-MACHINES.

rename.

taken out first papers and resident of New in thec'ounty of New York and York, .have invented certain new and'useful Improvements in Safety- Guards for Cutting-Machines, of which the following is a specification.

This invention relates to improvements in safety guards for cutting machines with particular reference to machines for cutting paper or cardboard in which the cutting member is operated in a vertical plane.

The object of the invention is to provide a safety device comprising a guard and suitable operating means therefor adapted to be attached to the cutting machine to prevent injury to the hands of the operator as the cutting member descends to cut the paper or cardboard.

One object of the invention is to provide a safety device or guard for the purpose set forth of simple, practical construction and adapted to bemanufactured at a low cost.

Another object is to provide a safety guard adapted to be attached to the cutting York city,

machine without requiring any material alteration thereof.

Other objects will appear as this specification proceeds while reference is had to the accompanying drawing-illustrating the preferred form of my invention and in Whichv Figure 1 is a front view of a cutting machine equipped with a safety guard embodying my invention, and Fig. 2 shows a modification. 1

In the drawing the reference numeral 1 denotes the frame of the machine.

2 is the knife operated by means of the connecting rods 3, 3 which are actuated in any usual and suitable manner from the driving shaft 4. I v

5 is the bed plate upon which the cutting is done. I

The safety guard maybe made of any suitable form and material. In the present instance it comprises a frame 6 fitted with a wire mesh 7 and provided with guiding lugs 8, 8 which slide upon the guiding rods 9, 9 suitably mounted upon the bed plate The guard is pivoted at 10 to a link 11 whichin turn is pivoted to an arm 12. [lhe latter is pivoted at 13 to the frame.

14: indicates a pin secured to the cutting I Specification of Letters Patent.

Application filed April 14, 1916. Serial No. 91,011.

PatentedNov. l4, i916.

member and whichcarrics a roller .15 upon which the arm 12 and thoguard rest. The various parts are so proportioned and a:- sembled that the lower edge of the guard prbjects below the knife, so that the guard precedes the knife in the descent as is obvious.

In Fig. 1 the parts are shown in their upper position when it will be seen that the guard is elevated siifiiciently above the bed plate to permit the operator to handle the paper and adjust it under the knife. When the machine is operated to cut, the knife descends and consequently the pin 14L is lowered, permitting the guard to fall. If now the operator should have his hands under or close to the knife, the guard will,

as it descends, fall upon his hands which he will instinctively withdraw, thus saving himself from injury. Upon the upward movement of the knife, the pin 14: lifts the guard and returns it to the position shown in the drawing. The position of the guard with respect to the knife may be adjusted for the particular machine by mounting the pivot 13 and the pin 14 at the proper places for hanging the guard so that its lower edge projects a predetermined distance below the knife. The guard may be lifted easily by the operator in working the machine as it has no direct connection with the knife. The lateral distance between the latter and the guard maybe adjusted by a'washer l6 on the pivot 13. if desired, the guard may have a lower edging 17 of rubber or like soft material and springs 19,19 may be provided to break the-fall. of the guard.

Fig. 2 shows amodification in which the guard 20 is hungdirectly on pins 21, 21 secured. to the knife. The guard is guided by lugs 8 sliding on the guiding rods 9 the same as in Fig. l. The range (if adjustment and the freedom with which the guard is lifted and operated is more limited by the construction in Fig. 2, yet this manner of supporting and operating the guard may prove sufficient for many types of machines.

' The guard 20 must of necessity be provided with cut out portions 22 or similar means to permit the pins 21 to follow the knife in its inclined movements. However, it will be seen that the invention as disclosed in the foregoing and as illustrated in the drawing, provides a guard mounted to move with the knife in advance thereof on the cutting stroke and be lifted by the knife on the re the form, material and operation of the guard Without departing from-the spirit of the invention. I do not, therefore, Wish to be limited to the exact disclosure, but

.claim all such changes and modifications as come properly Within the scope of the appended claim.

I claim r The combination with acutting machine,

the vertically movable knife thereof and its operating means, of a guard, vertical guide rods for said guard mounted upon the machine, guiding roller on said knife adapted to eng lugs on the guardadapted to slide upon said guide rods, supporting meansfor said guard arranged. to per the same to descend in advanceoii the knife and comprising a lever pivoted at its one end to the said machine, a, link pivotally connected to the other free end of said lever and to the said guard, and a said lever to lift the guard, sprin s gulde rodsfor breakmg the fail th guard and a soft rubber edge member secured'to the lower edge of the said guard.

Signed at 4219 3rd ave, in the county of Bronx, New York, and State of New York, this 8th day of April A. l). 1916:.

' JAMES ARTHUR MGGEE.

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