US10132A - Implement foe cutting cloth - Google Patents

Description

IUNITED STATES `PATENT OFFICE'.

GEO. W. GRISWOLD, OF CARBONDALE, PENNSYLVANIA.

IMPLEMENT FOR CUTTING CLOTH.

Specification of Letters Patent No. 10,132, dated October 18, 1853.

To all whom t may concern.'

Be it known that I, GEORGE W. GRIswoLD, of the city of Carbondale, Luzerne county, Pennsylvania, have invented a new and useful Improvement in Cutting Apparatus for Drapers, Tailors, and Others; and I hereby declare that the following is a full and eX- act description thereof.

It is called George IV. Griswolds magic counter knife.

To enable others to make and use the apparatus I proceed to describe its construction and operation, reference being had to the drawings hereto annexed and making part of this specification.

Figure l is a plan of the apparatus or top view; Fig. 2 side elevation, when partially opened; Fig. 3 longitudinal vertical section showing the waved channel; Fig. 4 the top jaw of the apparatus; Fig. 5 the under portion; Fig. 6 enlarged view of the sliding knife, in perspective; Fig. 7 the apparatus with a piece of cloth in it to be cut.

The under portion, C, of the apparatus, is a strip, similar in form to a yard stick (longer or shorter as desired) with a longitudinal channel in the upper side of it. The channel is of unequal depth in its coursehthe bottom line being waved, as shown at Fig. 3. The bottom of the channel is made smooth, so that the foot F of the knife, G, will slide easily over it. The upper portion or jaw, A, is hinged upon the under part, C, in such a way that it will shut over it on each side. This upper jaw is seen at Fig. et, the under side of it being shown. This is channeled so as to clasp over the under piece, and has a narrow slot the greater part of its length. On each side of this upper jaw, A, there is a bevel or dovetail channel-see Fig. 2.

The sliding knife apparatus is seen, (under side of it) at Fig. 6. It is a piece B, aboutfour or five inches long, made to clasp the upper jaw, C, on its upper side. It is put on by squeezing together the upper piece, C, the sides of which then spring out to their places and this cap of the sliding knife (Fig. 6) is held in place by the beveled channels upon the sides of A. The knife is thus attached. A metallic piece is screwed upon the under side of the cap, B, having a slot in it in which is hinged the knife, G, with a spring under the end, F. The knife thus sets at an angle (see Fig. 2) with the upper jaw. There is a piece, D, attached to the under portion upon the side at right angles for Va square and measure. It may be marked with inches or portions of a yard. To cut off a piece of stuff with this knife the upper jaw, A, is raised, as seen Fig. 2 andthe cloth E, passed between the jaws and drawn to a right angle by the square, D, and the upper jaw shut down upon itas seen Fig. 7. The cap, B, of the sliding knife being at the end, as seen Fig. 7, is then pushed suddenly across the cloth, and cuts it off with perfect accuracy. The whole operation does not require a second of time.

The knife, if set firm in the cap, B, would always cut in one part of the blade and would grow dull. To obviate this the knife rises and falls; as t-he foot F of the knife, G, runs along the bottom of the waved channel (seen at Fig. 3) it is made to rise and fall with its inequalities.

The counter knives may be made of different sizes to suit different purposes.

The precision obtained is from clasping the cloth tight while it is being cut.

To hold the cloth firmly there are small projections, like pin head on the top of the under portion, with corresponding depressions on the under side of the upper jaw, A. The location of them may be in many or all parts-see Fig. 5.

I have described the knife of my apparatus as cut-ting downward, and as moving on an undulating surface. Now it is obvious that the knife may cut upward, and move upon a single inclined plane, instead of the series of curved planes, without in the least departing from the general features of the invention; and I so contemplate using it if found essential.

Having thus fully described the nature of my invention what I claim therein as new and desire to secure by Letters Patent, is.

Stretching the cloth or other material to be cut over the two jaws of the stock, and holding it firmly in place by the clamp, while the knife divides it with a draw cut, substantially as described.

G. W. GRISWOLD.

Titnesses OWEN E. WARREN, WILLIAM THOMPSON.

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