US1615288A - Cloth-cutting machine - Google Patents

Description

. 1615,288 25 D. s. MAIMIN CLOTH CUTTING MACHINE Filed Dec. 27, 1924 JuJATlORNEYJ Patented Jan. 25, 1927.

UNITED STATES 1,615,288 PATENT OFFICE.

DAVID S. MAIMIN', OF NEW YORK, N. Y., ASSIGNOR TO H. MAIMIN COMPANY INCOR- PORATED, A CORPORATION OF NEW YORK.

CLOTH-CUTTING MACHINE.

Application filed December 27, 1924-. Serial No. 758,390.

to draw a chalk guide line on the top of the lay and follow that line with the cutting knife. When only a single strip is to be cut, the drawing of a single chalk'line is no great hardship, but where, as is common,

a great number of strips are to be cut,

necessitating the drawing of a great number of lines, the time lost and labor expended are not inconsiderable. According to the present invention I provide means which will enable an operator to cut one strip or a succession of strips without the necessity for the separate drawing of guide lines. This means comprises a laterally adjustable gauge rod which can be set a predetermined distance from the plane of the knife and held against or just above the edge of the lay during the out. By means of this gauge, a strip or a succession of strips of the desired width can be cut. The arm which supports the gauge rod can be made to extend on either side of the knife, so that the out can be made from either the right or the left.

As a further improvement I provide a similar gauge rod carrying a piece of chalk which, as each cut is made, automatically draws a guide line on the cloth for the succeeding cut. This means for drawing the guide lines can, if desired, be used as auxiliary to the gauge rod first described.

In the accompanying drawings I have illustrated certain preferred embodiments of my invention, a study of which will make the principles involved clear. In these drawings Figure 1 is a front elevation. partly in section of a cloth-cutting machine of the rotary knife type equipped with a gauge of the present invention; Fig ure 2 is a detailed view of the vertical gauge rod showing the means for adjusting its position upon its supporting arm; and Figure 3 is a view similar to Figure 2 showing the rod equipped with a marker.

The cloth-cutting machine illustrated in these drawings comprises the usual base 1 carrying a standard 2 supporting a rotary knife 3 and a driving motor 1. This ma chine is provided above and in front of the knife with a pivoted yoke 5 which carries a pair of sharpening discs or wheels 6. This yoke is pivoted upon the frame'of the machine about a pin 7 andthe wheels swung into and out of contact with the knife by means of manually operated mechanism, not shown. The pin 7 is held fixed rela tive to the frame of the machine by means of a screw 8, and is provided at its outer ends with threaded portions 9. The pin is soplaced in the machine that the distances between the inner ends of each portion 9 and the plane of the knife are exactly the same.

In acordance with the present invention I provide a gauge carried by the machine for guiding the machine relative to the edge of the lay and thus making possible the cutting of a strip of a predetermined width without the necessity for previously drawing a guide line. This gauge comprises an arm 11 provided at one end with a threaded recess 10 which engages one of the threaded ends and the pin 7. As the threaded ends 9 of the pin are placed a predetermined distance from the plane of the knife, the arm 11 when in position is likewise a predetermined distance from'the knife and is provided with a series of graduations 12 indicating the distance in inches of any given point along the arm from the knife.

The other part of the gauge comprises a gauge rod 13 adjustably mounted upon the arm 11 by means of a universal connection 14 controlled by a set screw-15. It is thus possible to move the gauge rod 13 along the arm 11 and'set it at any desired distance from the knife so that a strip of exact and predetermined width can be cut.

The operation of a machine equipped with the gauge of the present invention will be clear from the foregoing but may be briefly reviewed. If it is desired to cut a strip of a given width, the set screw 15 is loosened and the rod 13 slid from the arm 11 until the proper graduation is reached when the set screw 15 is tightened and the rod clamped in position. For ordinary operations this position is vertical, but may be made inclined when necessary. The operator then places the gauge rod in contact with or just above the edge of the lay as illustrated in Figure 1 and proceeds with the cut always keeping the rod in contact with or just above the edge. As indicated in Figure 1, the gaugeimaybeon either tlreright or left of the machine.

In order to draw a guide line placed a predetermined distancefrom any cut as that out is made, thus preparing for the next succeeding out I may equip the gauge rod 13 with a marker at its lower end, this marker comprising a pair of plates 16 clamped upon the lower end of the'rod and holding between them a piece of marking chalk 17. Themannerotusing this marker will be evident Withoutfurther description.

By means of the gauges of the present invention I have provided simple and efficient means for guiding themachine relative to the cloth being cut, and have done away with the necessity for manually drawing guide lines upon the lay when a strip or series of strips are to be out.

I claim '1. In a cloth cutting machine of the rota-ry knifetype, the combination of a standard,

adjustablymounted onrthe arinfor contactingwith theedgeofthe cloth being cut or extending to just above that edge and guiding the 1 knife.

2. In a cloth cutting machine of the rotary iknifetypeythe combination of a standard, a

knife journaled thereon, a pivoted yoke for knife-sharpening" stones, a pin coaxial with the yOkeand extending oneither side thereof, threaded ends onthe pin, a graduated arm making threaded engagement with either end ofthepin, and a gauge rod adjustably mounted on the arm for contacting with the edge of the cloth being out or extending to just above that edge and guide ing the knife.

Intestimony whereof I afiiX mysignature.

DAVID S. MAE KIN.

Images