US1841099A - Cutting device - Google Patents

Description

Jan. 12, 1932. FAASE 1,841,099

CUTTING DEVICE Filed Sept. 27, 1929 Z Sheets-Sheet 1 jg, l

IN VENTOR.

m, warm A TTORNE Y5 F. J. FAASE CUTTING DEVIC Jan. 12, 1932,

Filed Sept. 27, 1929 2 Sheets-Sheet 2 INVENTOR.

ZA N Z/% w w% I ATTORNEYS Patented Jan. 12, 1932 PATENT OFFICE FRANK FAASE, OF MILWAUKEE, WISCONSIN co'r'rme nnvron Application filed September 27, 1929. Serial No. 395,536.

My invention relates toimprovements in cutting devices.

The object of my invention is to provide a device for accurately cutting grooves, chan nels or strips in and from the surfaces of floors or materials where moldings or inserts are desired to be inlaid.

More specifically stated it is an object of niy invention to provide adevice for cutting strips from pliable floor materials to make way for inlay strips wherewith to form decorative and useful borders and color combinations. v r I Another object of my invention is to prol5 vide a device for the purposes above set forth which may adj ustably and accurately accomplish those purposes with a minimum of effort and with a minimum requirement for skill and experience in the operator thereof. In the drawings: I "Figure 1 is a isometric 'view' of the lower sideand one end of my device. Figure 2 is a section on line 22 of Figure 1.

Figure 3 is a section ure'2. r Figure 4 is an isometric view of my device in operation upon a linoleum floor. Figure 5. shows my device mounted for cutting a circular channel, using my centering head.

Like parts are identified by the same reference characters throughout the several views. V I i My cutting device as described and shown herein is made for the purpose of cutting channels, grooves or strips in and from linoleum flooring or flooring of similar consistency but it will be obvious after an examination that my device may be used as well for any cutting process where cuts'or kerfs of predetermined depth or size are desired and where accuracy in the width of cut for the channel or groove is a paramount requiremerit.

' It is of advantage where flooring has already been laid or where flooring must first be laid before decorative features therein may beapplied to layout upon-sucha floor any desired design of inlay decoration for on line 33 of Figwhatever purpose and to be able to accurately and easily cut channels for the reception of inlay material and have the work rapidly done. My cutting device is best adpated to this type of work and consists of the following parts which make up my preferred structure.

Fundamentally my device comprises a knife or knives 10 which are so mounted within a frame 11 as to be adjustable in a plurality of directions with accuracy and with ease. The frame 11 comprises a block 12 and end pieces 13 and 14 providing an interior space which is divided into two sections by a partition 15. Across one of these sections'and mounted in the end pieces 13 and lei is a shaft 16 having portions 17 and 18 which are oppositely threaded and portions 19 outside the end pieces 13 and 14 which are squared to receive a wrench for purposes of adjustment.

- Mounted upon threaded portion 17 of the shaft is a knife block 20 which comprises a holder for the knife 10 best shown in Figure 2 where it will be seen that this knife com- 7 prises a unitary screw threaded portion and a sharpened edged tool portion receivable in a threaded aperture 22 in the block 20. A set screw 23 mounted in an aperture as in the side of the knife block 20 provides means 90 whereby the unitary knife element 10 may be set and prevented from turning in the knife block.

Upon portion 18 of the threaded shaft 16 another knife block 25 is mounted and comprises a counterpart of the knife block 20 except that its threaded mounting upon the portion 18 of the shaft 16 necessitates a threaded aperture at 26 adapted to receive there'versely contoured threads of the portion 18. This knife block is likewise provided with a set screw at 27 for the purpose of securing the knife 10 against rotation.

It will be seen from an examination particularly of Figures 1 and 3 that the knife blocks are securely held against rotation with the shaft 16 by reason of their position between the frame 11 and the partition 15 since these blocks have a sliding fit to permit their traverse from the middle'of the shaft 16 outwardly to the respective ends 13 and 14 of the frame. I

Extending through either end of the frame and into the end pieces 13 and 14 I have pro vided set screws 28 and 29 which, when turned within their threaded mountings'set against the ournalled portions of the shaft 33-and 34 so as to accuratelysecure the guide bar in said apertures for circular cutting. At 37 I haveprovided an aperture for con-- venience in handlingmy cutting device since it is preferable that the frame of my device be made heavy and therefore somewhat un-' wieldly and a hand hold'most conveniently positioned in the frame is shown at 37. a

As stated above my cutting device is of par,-

ticular importance and of great usefulness in the cutting of channels in linoleum that has already been laidupon a floor and I have shown my device in Figures2 to 5, inclusive, in various positions of adjustment and in various uses in such an operation. As shown in Figure 2 my device is placed upon a linoleum surfacing 40 which is laid upon an ordinary concrete or wood floor 41 and my guide bar 32 has been positioned midway of a strip 42 thatis to be cut from thegeneral body of linoleum. 1 i v Since the linoleum is resting upon material which is. apt to dull the knives of my cutting device I have rotated the knives 10 in their respective knife blocks 22 and 25 only sufliciently to project the knife edges into the V linoleum a substantial distance but not sufiishown in-Figure 4 the guide bar 32 is secured to the linoleum surfacing and if necessary secured to the flooring 41 beneath'said surfacing by hardened steel pegs 43 so that the frame 11 of my cutting device together with its accurately spaced knives 10 is guided along the guide bar 32 according to any desired pattern as'laid out by the guide bar. j

H a circular pattern is to be formedlset up my cutting device as indicated in Figure 5 with the guide bar 32 inserted through apertures 33 and 34, secured at aiproper radius upon a peg 44, and the knives-have been set a proper distance from each other by rotation of the shaft 16 so as to cut a strip 45 of the desired width. 7

As a practical matter I have found in the use of my device that in setting the knives and knife blocks upon the shaft 16 it is preferable toplace the proposed inlaystrip between the knives 1O and to rotatethe shaft 16 soas to bring the knives snugly'against the sides of such proposed inlay strip; then upon removal of the inlay stripan additional slight turn of the shaft may be made before the set screws 28 and 29 are turned down upon said shaft thereby providing for a channel slightly less wide than the proposed inlay strip. By this means I have found that a smooth fit for the inlay strip is positively secured and that by reason of the accuracy of the cut made by my device the inlay strip will be received uniformly throughout the design cut in the floor in a satisfactory manner. Obviously after the cutting operation has been completed a slight tearing of the linoleum at the bottom of the cut is necessary but I have found that this is only suflicient toform rough edge which will receive glue in a most satisfactory manner in gluing in aninlay strip as a final operation.

In orderto provide for the cutting of an inlay groove which is narrower than a straight edge which may be laid in the groove 30-, I provide an additional off set groove 30 in which the straight edge may be lodged so as to provide for guiding ofmy device at a time when the knives must necessarily be set closer together than would be permissible if the straight edge were lodgedin the chan- 32 may be inserted and locked by means of.

set screw 38. The centering head may then be placed at the proper point in a linoleum floor and a'workman may stand upon the centering head to locate it positively in that position; while 1 my device is being rotated aboutthat center so as to cut acircular groove for an'inlay. V

It will likewise be apparent from the above description thatmy-device may be used not only for cutting a channel from a laid floor so that an inlay strip may be insertedbut the same device with the knives set at the position may be used to cutmaterial from-a stock piece of linoleum so that this outstrip will accurately fit the groove o'rchannel which has been cut in the laid floor, thus obviating the necessity for accurate measu-rement of a channel that has already been cutor obviating the V necessity. for, being extremely accurate in I" claim: 1. A cutting device including a guide, a frame fitted to the guide, a screw having its end portions threaded oppositely, a knife for reception within the ways whereby to guide the frame and knife.

3. A cutting device comprising a frame including end pieces and a partition, a threaded shaft receivable in the end pieces across the frame, portions of said shaft being oppositely threaded, knife blocks threaded upon 7 said portions of the shaft and engaging said partition, whereby they are prevented from rotation with the shaft and a knife adjustably receivable within each block.

4t. A cutting device comprising a channeled frame including end pieces and a partition. of knife blocks within the frame and provided with knives, connections between the frame and the blocks for adjustment of the blocks within the frame, and a guide bar for reception in the channels of the frame.

5. A cutting device including an apertured frame, knives adjustable in the frame in a plurality of directions, and a guide bar receivable in one of said frame apertures to guide the frame on a circular path and receivable inranother of said apertures to guide the frame along a path parallel with the axis of the guide bar. 7

FRANK J. FAASE.

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