US84307A - Improvement in paper-cutting machines - Google Patents

Description

Je UMCG-549 tluitd ,30 new -MMW eea-wmet GEORGE H. SANBORN, OE NEW YORK, N. Y.

Letters Patent N0. 84,307, lated November 24, 1868.

IMPROVEMENT PAPER-CUTTING MACHINES.

` The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it 'may concern. 1

Be it known that I, GEORGE H. SAXBORN, of the city, county, and State of New York, have invented a new and improved Paper-Cuttin g Machine; and'I do hereby declare, the following to be a full and corre-ct description ofthe same, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation of the machine, and Figure 2 is an end elevation of the saine.

The same letter marks the saine part in both figures. The nature of the invention consists in devices for .operating and checking the knife, and for giving it both an inclined and a draw cnt, as hereinafter more fully set forth.

In the accompanying drawingsa. marks the frame ofthe machine, to the upper part of which the knife c is suspended, in proper guiding-A suspension of the knife by the swinging arms secures i a draw ont, also, in the ordinary way.Y

"he knife-stock extends out beyond the frame, as seen in iig. l, and has a slot in its end for the reception of an adiustable block, d, which can be moved' up and down in it by means of the set-screws s s.- Pivoted to this nut is the rod p, by which the knife is operated. A rock-shaft, e, is hung in brackets, y g, attached to the lower part of the frame, .and is operated by the lever q, attached to its front end by its head, j'. To this shaft is fastened the librating-arm h, the lower branch 'of which is forked to receive the lower end of connect ing-rod p, which is pivoted to it. On the inner side of the upper end of the arm h., is attached a piece of rubber, r, adjusted by set-screw s', the office of the rubber being to check the descent of the knife, and keep it from being dulled by cutting into the table m when at the end of its stroke,

In rear of arm h, onrock-shaft e, is attached the segmental arm i, which has a grooved arc on its free end. To this is fastened a cord, n, which passes up over pulley f, and has a weight, l, attached to its end, as shown. The oice of this weight is to raise the knife after the completion of its downward stroke.

The operation of the machine is as follows:

The paper to be cut is placed on the table m, the knife c being in its highest position, as shown in red lines in fig. 1. The lever q is then depressed, when the knife enters-the paper at an angle with its surface, and, by a draw ut,`descends through it. Just as the knife reaches the table, the rubber -r comes into contact with the end ofthe frame, and checks its further descent. The' lever q being then released, the weight l draws up the knife to its initial position, ready for a repetition of the operation.

Having thus fully described my invention, I

What I claim, and desireto secure by Letters Patent, is

l. The combination of the knife c, and the swinging I arms b b', when the latter are arranged, relatively to each other, in the manner described, for the purpose specied.

2. The arrangement and combination of the rod 1J, arm` h, rock-shaft e, and lever q, as and for the purpose desciibed.

3. The rubber lr, attached and adj usted as describedl for the purpose of arresting theniotion of the knife, as set forth.

The above specification of my said invention signed and witnessed at Boston, this 22d day of September,- A. D. 1868.

GEO. H. SANBORN.

Witnesses; i

ALFRED HATHAWAY,

CHAs'. F. STANSBURY.

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