US2547249A - Strip cutter - Google Patents

Description

R. E. BELL STRIP CUTTER April 3, 1951 Filed Jan. 3, 1950 Roger E. Bell 4 INVENTOR.

Patented Apr. 3, 1951 1 UNITED STATES PATENT; OFFICE i H 2,547,249 I A I STRIP CUTTER Roger E. Bell, Natick, Mass. Application January 3, 1950, Serial No. 136,619

tain' the web in contact with the blades, while guiding it'laterally thereof {and which is of simple construction yet durable and highly efiicient for Variousi iiportant featuresof this invention by 1 which the above objects are attained and j by whichthis'invention is characterized reside inth purposes" intended.

the provision for a strip cutting device in which the top wall, the front wall, andthe bottom wall formthe sole means for supporting the cutter blades in their operative position; which has a guide overlying the projecting cutter blades to shield the user therefrom and guide the web into contact with the cutter blades, and which has means for attaching it to a fixed object so that the bottom will be urged in a direction to press the blades against the top, to thereby lock them therebetween.

These, together with various ancillary objects and features are attained by this device, a preferredembodiment of which has been illustrated by way of example only in the accompanying drawings, wherein:

Figure 1 is a perspective view of the strip cutting device, a web shown in dotted lines being drawn over the cutting blades.

Figure 2 is a vertical longitudinal sectional view of the device taken substantially on the plane 2-2 of Figure 1.

Figure 3 is a vertical transverse sectional view of a strip cutting device taken on the plane 33 of Figure 1.

Referring now more specifically to the accompanying drawings, wherein like numerals designate similar parts throughout the various views, it will be seen that there is provided a strip cut ting device indicated generally by the numeral III which may eflicaciously be used to out a web [2 into strips of varying widths, such as are neccessary in the making of hooked and braided rugs, and the like.

As will be appreciated from a consideration of the accompanying drawings; the cutting device In consists of a top wall M and a front wall [6, of either planar or arcuate contour, the front wall having transversely extending slots l8 therein. Extending through the slots l8, and into the path of travel of the web I2 are the externally projecting ends 20 of the blade 22, which blades can obviously eficaciously consist of conventional razor blades. Attached to the top wall 14 and the front wall I 5 are end walls and 26, and the .rear wall 28, which walls may be so proportioned as to form an enclosure which is substantially. rectangular in form. For purposes which will later become apparent, the front Wall 15 may have an angularly inclined portion 32 depending I, therefrom, which portion may conveniently be A bottom wall 30,- preferably having a flanged edge 34 attachedparallel to the rear wall 28.

thereto, or formed as part thereof, is detachably received within the confines of; the side,front and rear walls, thereby completing the enclosure.

As is believed readily apparent from a consideration of Figure 2, the spacing between therear wall 28, and the downwardly depending flange 32 of the front wall may be such that it is greater than the length of a razor blade 22 which is placed therebetween, so that the razor blade may be adjusted longitudinally of the casing so as to selectively expose the unused edge of the razor blade as the exposed edge becomes dull. An alternate means of adjustment may be provided by so dimensioning the flanges 34 so that vertical reciprocatory movement of the blade. within the casing is possible. However, if the latter construction is used, it will obviously be desirable to continue the rear flanged portion of the bottom wall upwardly a sufficient distance so that a lug which is attached thereto may either overlie the top edge of the blade or be received in the notch 36 which is provided in most conventional razor blades, so that the blade will be lockedrelative to the casing, even though it is not in contact with the upper wall l4.

Any means may be provided for attaching the casing to a fixed support, one such means being shown as an L-shaped yoke 38, the vertical leg 40 being fastened, as by rivets A2 or welding or the like, to the side wall 26 of 'the casing. The horizontal leg 44 of the yoke 38 has a screw-threaded bore 35 therein, which bore receives the thumb screw 48, a washer 5B or the like being attached to the upper end of the thumb screw 48 so as to prevent marring of the surface into which the thumb screw comes in contact. As in readily apparent, upward adjustment of the thumb screw 48 will cause the bottom 30 to be urged upward- 1y, through the medium of the fixed object which lies between the washer 50 and the bottom 30, so

that the bottom will retain the blade 22 in locking engagement with the top M.

The vertical leg 40 of the yoke 38 may conveniently extend beyond the top and front walls 14 and I6, respectively, of the casing so as to provide a longitudinal guide 52 for the web I2. In order to retain the web l2 in contact with the exposed portion 29 of the cutting blade 22, transversely extending guide 5d may be provided, the guide 54 lying substantially parallel to the inclined front wall 16 of the casing, and in spaced relation to the cutting edges of the blade 22. It is to be understood, however, that the guide 54 may have transverse slots provided therein, which slots will receive the exposed portions 20 of the blade 22 so as to laterally space and reinforce the blades 22. Further, the guide 54 may either be rigidly secured to the vertical leg 35 of the yoke 38, or may be adjustably mounted thereon.

In operation, blades 22 are positioned in the slots IS in the front wall i 6, which correspond to the width of strips it is desired to have cut, and the web 52 is then drawn downwardly over the exposed portions 28 of the blades 22, and under the guide 54, to thereby cut the web 12 into strips of the desired width. As the blades 22 become dull, they may either be replaced, or if the cas ing is made so that the blades are adjustable relative thereto, the blades may be adjusted so as to expose a sharp unused edge.

When not in use, the blades 22 may be removed from their positions in the slots, and placed wholly within the confines of the Wells so that the casing will thereby provide a container for the blades of such a nature that no sharp edges are exposed.

From the foregoing, it is believed that the construction and operation of the device will be readily understood, and further discussion is therefore believed to be unnecessary. However, since numerous modifications will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not desired to limit the invention to that shown and described, but all suitable modifications may be resorted to, falling within the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A strip cutting device comprising a casing having top wall, a downwardly and outwardly extending front wall attached thereto and having transversely extending slots therein, cutter blades extending through said slots and underlying said upper wall, means attaching said casing to a, fixed support, said blades extending below said casing and engaging said fixed support to be thereby locked between the support and said top wall when said casing is locked to the support.

2. A strip cutting device comprising a casing having a top wall, a downwardly and outwardly extending front wall attached thereto and having'transversely extending slots therein, cutter blades extending through said slots and engaging the under surface of said upper wall, a bottom wail attached to said casing and engaging the under edge of said blades selectively locking said blades in said casing, means attaching said means extending casing to a fixed support, parallel to said slots for guiding a strip relative to said blades.

wall attached to said casing and engaging the under edge of said blades selectively locking said blades ins-aid casingfmetms attaching said cas ing to a fixed support, means extending parallel v to said slots for guiding a strip relative to said blades, means extending parallel to said front wall and overlying the projecting ends of said blades to guidably retain a strip in contact with said blades.

ROGER E. BELL. No references cited.

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