US1061982A - Cloth or fabric cutter. - Google Patents

Description

M. z.' CLAVANS. CLOTH 0R FABRIC CUTTER. APPLIOATION FILED 00124, 1911.

Patented May 20, 1913.

2 SHEETS-SHEET 1.

WITNESSES when SEATES rarnn'r ourice.

MORRIS Z. CLAVANS, F lI-IILADELPHIA, PENNSYLVANIA, ASSIGNQIR- 6h ONE-EAL T0 WILLIAM GOLDSTEIN, OF PHILADELPHIA. PENNSYLVANIA crown on, FABRIC CUTTER.

menses.

a citizen of the United States, residing inthe city and county of Philadelphia and F tat'e of Pennsylvania, have invent; d a new and useful improvementin, Cloth or Fabric Cutters, of which the folloiving is aispecification.

My invention relates-to a: cloth or fabric cutter, and consists of mean? whereby the edge of the base plate may bedirought down closely to the table. and underneath the material to be cut.

it further consists of other novel featu *es 0t construction, all as will be hereinafter fully set fort-h The invention is satisfactorily illustrated in the accompanying drawing, but-the important 'instrumentalities thereof may be varied, and so it tobe understood that the invention is not limited to the specilic ar-- rangement and organization shown and de scribed.-

Figure 1 represents a front elevation of a 2 represents a side elevation of the cutter, partly in section. Fig. 3 represents a horizontal sectional detail view on the line w-r.-:

device for the Wrist-pin. v a top planview on a diminished scale of the in Fig. 1. Fig. 4: represents a vertical sectional detail view on an enlarged scale of part of the cross-head and the'ant-hfriction Flg. 5 represents are provided beneath the forward end of the central portion, and the rear edge of said portion is hinged at. 8, to the frame-portion which. is supported to the rear oi said hinge upon ball-casters, 9.

upon the ball-casters and its front.- ed ge may drop to contact with the surface of the table upon which the pile of cloth or fabric to be Specification of Letters Patent.

Application filed October 24, 1911.

The baseqplatc may thus be guided to travel in any direction li a'tented May 2%, 1913,

Serial No. 656,5(32';

cut rests, so as to enable the beveled edgeto engage beneath very thin fabric.

The standard has the usual guide 10, in

which the knife, 11, is guided, and an electric motor 12 is'supported upon the upper end of the'standard'. The throat-plate hus the usual slot, 13, for the passage OlT tlIQ lower end of the knife. The shaft, 14; or the motor has peripherally grooved collars 15' and 16. secured upon it, at its forward and rear ends, and said collars are journaled in ball-races, 17 and 18, in the motor casing, having balls 19 and 20. A controlling-switch 21 is supported upon the motor to be within-convenient reach of a finger or thumb ofthe hand of the operator grasping the handle, 22, which projects rearward from the standard andby which. the cutter is guided. A disk or fiy-wheel, 23, is secured upon the forward end of the motor-shaft, and said disk has a wrist-pin, 24,

in its outer facc,'to which pin a periph--- erally grooved collar, 25, is secured. An internally, grooved, annular disk 26 surrounds casing, 32, secured upon the front of the motor casing. "lhe cross-head has a clamping-strap 33, upon its closed outer side, and said strap clasps around -a rod, 3%, guided to reciprocate vertically in the casing, and a screw, 35 through the end of said strap serves to draw the strap against the rod to tightly clamp the latter.. The knife 11 is secured to the lower end of said rod. 1%. presscr foot, 3G," is secured to a rod 37, adjustably supported upon the forward face of an extension, 38 of the rectangular casing. The rod to which the knife is se cured is guided in said extension, and the upper portion. 39. of said rod is tubular and is Vertically movable upon a guide-rod, 4-0, secured to project downward from the upper end of the rectangular casing.

In practice, the presser foot is adjusted above the base-plate to a height corresponding to the thickness of the pile of fabric to he cut, and after the motor has been started to reciprocate the knife by means of the anti-friction Wrist-pin and the cross-head, the cutter is guided by the handle to have the base-plate slip beneath the pile of fabric, thereciprocating knife cutting through such pile, following the pattern outlined upon the same. character have been mounted upon rollers in the base-plate traveling upon the cutting table, but such rollers being only capable of rotating in a substantially straight line, would drag when the cutter was moved lat erally. The ball-casters of my cutter admit of the machine traveling with ease in all directions. The hinged frame-portion oi' the base-plate admits of the forward edge of the same bearing directly upon the surfaceof the cutting-table, thereby admitting of the base-plate engaging beneath the bottom layeraof the pile of fabric irrespective of the thinness and softness of such fabric.

Vibration of the machine by the rapid reciprocation of the knife when the latter is reciprocated by pit-man-connection to a cranli upon. the motor-shaft, such as is Heretofore, cutters of this usuallyemployed in machines of this character, is avoided by the Wrist-pin and slotted cross-head, and the anti-friction ballbearings for the motor-shaft and Wrist-pin reduce friction of the parts, avoid excessive lubrication and reduce vibration.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent,- is

In a cloth-cutter, a central base-platonortion, universally movable casters beneath I MORRIS Z. onavans.

Witnesses THOS. SECHER, C. D. MoVAY.

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