US2098641A - Strip cutter - Google Patents

Description

Nov. 9, 1937. J. E. COOK 2,098,641.

STRIP CUTTER Filed April 15, 1936 2 Sheets-Sheet 1 nlmfi'iil'l lil Ill 1 A a mmum H llll"llmm!!!llmlmlllllllllilHm ./N VENTOR. IQTO Q cook ATTORNEY Nov. 9, 1937. J COOK 2,098,641

STRIP CUTTER Filed April 15, 1936 2 Sheets-Sheet 2 l/VVENTOR j -vowz E C k A-r'roRNz Y Patented Nov. 9, 1937 STRIP CUTTER Jerome Cook, Larchmont, N. Y., assignor to Bigelow-Sanford Carpet Co. Inc., Thompsonville. Conn, a corporationof Massachusetts Application April 15-, 1936, .Serial No. 74,397 210mm.- (01. 30-293 This invention relates to cutters particularly of the type adapted for cutting strips fromcarpets and the. like.

The cost of manufacture ofassembled rugs :constructed of strips of .pile fabric joined with seams at abutting edges is excessive in comparison with the cost of weaving the fabric from which the rug is made, due to the relatively high costs of trimming, assembling, etc., and an obwill appear, I preferably provide a pair of such presser feet, one adjacent the edge abutting gauge and-the other. spaced from it a distancesomewhat greater than the width of the strip to be 25:.cut, with the blade interposed between the two presser feet and in approximate alignment therewith.

1 As a. modified embodiment of my invention, I provide a cutter with gauge of novel construc- 30;;tion adapted for measuring the width of cut on straight and curved strips interchangeably.

These and further objects and advantages of my invention will appear from a more detailed description thereof in connection with the aca sgcompanying drawings, in whichr Fig. 1 is a plan View of the preferred embodiment of my invention;

Fig. 2 is a side elevation view thereof; Fig. 3 is a detail vertical section taken on the 40 line 3-3 of Fig. 2;

Fig. 4 is a detail section taken on the line 4-4 of Fig. 2;

Fig. 5 is a detail perspective view of the blade supporting sleeve member; 45 Fig. 6 is a plan view of a modification;

Fig. 7 is an elevation view of the device of Fig. 6;

Fig. 8 is a perspective unassembled view of the blade securing means for the modified embodi- 50 ment; and' Fig. 9 is a perspective view illustrating the manner of use of either embodiment of my cutter. Referring to Figs. 1 and 2, the carriage of the cutter therein illustrated comprises a gauge plate 55 I connected by a rod 3 extending perpendicular to the rug engaging surface of the gauge plate and also by a cross bar 4, with a presser foot 2, which may be arcuate in its rug contacting surface, as indicated in Figs. 2 and 9. The rod 3 has reduced screw threaded ends 5 and 6, one of 5 which passes through the gauge plate I and is secured by the nut l0 and the other of which passes through the presser foot 2 and is secured by the nut l I. The cross bar 4 may have a flange l2 at one end drilled to receive the reduced end 6 10 ofthe rod 3 and to be secured upon tightening of the nut l l by abutment of the adjacent shoulder on the rod 3 and at its other end may have a flange l4 secured to the gauge l by a suitable bolt or rivet I5.

A second. presser foot in the form of a flanged plate is preferably secured to the gauge I, as by screws 2|, at a sufficient distance above the lower surface of the gauge to leave a rug edge abutting surface on the gauge as indicated in 20 Fig. 3.

Slidably mounted on the rod 3 is a sleeve member 25, the details of which are illustrated in Fig.

5, which has a centrally disposed bore 26 to receive the rod 3 and which is provided with parallei spaced arms 30. The blade holder '35 is piv-- oted between the arms 30 by a pivot 36 passing through the apertures 32 in arms 30 in alignment with an aperture extending through the holder 35. low to receive spare blades 38 and the end is closed by a screw threaded plug ,39.

The blade 40, which may be a razor blade of common type havinga central elongated aperture 4| (Fig. 2) is secured between the end 42 of the holder and a plate 43 having lugs 45 (Fig. 4) of a shape and size to be received by the slot 4| v of theblade to secure the blade against turning in the holder. A bolt 52 with wing nut 53 secures the parts together.

The width of the strip being cut is indicated by graduations on a flattened surface 60 of the rod 3 and the edge 6| of the sleeve member 25 may effectively act as a cross-bar co-operating with the scale to indicate the reading. Obviously, the distance between the edge 6i and the cutting blade 40 should be compensated for by commencing the scale graduations with the appropriate number at the gauge l. The sleeve member 25 is moved along the rod 3 until the desired width is indicated and the sleeve is secured in this position by a thumb bolt 65 passing through the wall of the sleeve and abutting the flat portion 60 of the rod 3, as indicated in Fig. 2.

To aid in propelling the device over the sur- The holder may conveniently be holface of the rug, which is inverted for cutting as indicated at A in Fig. 9, a second handle I0 is secured to the gauge I.

For cutting strips of narrower widths than those for which the cutter just described is usually employed, or for cutting strips having curved edges, I have indicated as a modification in Figs. 6-8, a device in which the gauge plate, instead of being formed with av continuous surface as in the gauge plate I, comprises a strip of sheet metal IOI cut away at I04 and bent inwardly at I;

to form the presser foot. The depending strips I0'Ia and Hill) on both sides of the cut away portion are bent into semi-circular form to provide companion gauge members. The rod I03 is secured perpendicular to the upstanding portion of the strip I M by the nut H0 and lock nut II I and has a wheel I02 mounted on a bearing 80 suitably secured to its opposite end. In this embodiment the cross member 4 of the carriage is omitted.

As a modification of the manner of adjustably mounting the blade holder I35 on the rod I03, I dispense with the sleeve of the other embodiment and pass the rod I03 directly through the aperture I46 (Fig. 8) in the extension I42 of the blade holder I35, aperture I 41 in plate I43 and aperture MI in the blade I40. For a purpose which will appear, in this embodiment I eliminate the pivotal mounting of the blade holder I relative to the rod I03 and rigidly secure the blade holder to dispose the blade I at a predetermined angle relative to the surface of the rug A to be 35 cut, as indicated in Fig. 7. For this purpose the rod I03 is provided with oppositely disposed flat surfaces I60 and I6I and the aperture I46 through the holder extension I42 has correspondingly flattened opposite surfaces, as indicated in Fig. 8. To change the inclination of the angle of the blade I40 the nut and lock nut H0 and III are loosened to permit rotation of the rod I03 to the position necessary for the desired inclination.

In this embodiment, I have adopted a different means for clamping together the plate I43 and extension I42 between which the blade I40 is secured. In this instance a screw thread 200 is formed on the round surfaces of the rod I03 and a knurled nut 20I and knurled nut 202 with collar 203 are threaded onto the rod I03 on opposite sides of the blade holder to secure the blade and holder. Adjustment of the blade I40 along the rod I03 fordifferent widths of the strip to be cut, as indicated by the scale, may be efiected by backing off and tightening the nuts 2M and 202.

In using my modified embodiment to cut narrow straight strips from the edge of a rug, the

rug is placed tangentially of the semi-circular guide members IO'Ia and Ifllb and an accurate cut is obtained. When the cutter is used to cut a convex curved strip, such as is indicated at A, the open portion I04 between the semi-circular gauge members I010. and I011) permits the curved rug edge to protrude between the gauge members and the semi-circular formation of the gauge members permits them to follow the curved outer edge of the rug in an obvious manner to make a'cut such as indicated at B. Similarly, the gauge members IBM and. ID") are effective for cutting strips from carpeting having a concave edge such as indicated at A".

It is primarily for the purpose of assuring accuracy in making such curved cuts that I secure the blade edge at a predetermined angle relative to the surface of the rug in this embodiment of my cutter.

In making a concave cut, if the tip end of the blade be adjusted at an angle such that the cut commences at a point about opposite the gauge member mm, the scale I03 will indicate with sumcient accuracy the width of the curved strip to be out whether it be convex curved as at A or concave as at A".

Iclaim:

1. In a rug strip cutter, the combination of a gauge adapted to abut the edge of the rug to be cut, a presser member adjacent the gauge adapted to bear on the upper surface of the rug adjacent the said edge, a second presser member, means connecting the two presser members to space the second presser member a predetermined distance from the first presser member, a blade holder and means for mounting the blade holder on said connecting means intermediate said presser members, the said'blade holder being pivotally mounted to afford a free swinging movement of the blade toward and away from the work as the cut progresses.

2. In a rug strip cutter for cutting curved strips,

the combination of a plurality of gauge members adapted to abut the edge of the rug to be cut and spaced from each other to allow protrusion, between the gauge members, of curved rug edges, a presser member remote from said gauge members, means connecting the presser member and the gauge members, a blade holder, means for mounting the blade holder on said connecting means intermediate said presser member and said gauge members, and means for adjustably fixing the inclination of the blade holder relative to the surface of the work, whereby to gauge the depth of cut.

JEROME E. COOK.

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