US2581179A

US2581179A - Pattern scribing tool

Info

Publication number: US2581179A
Application number: US737929A
Authority: US
Inventors: Clarence L Eldh
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-28
Filing date: 1947-03-28
Publication date: 1952-01-01
Anticipated expiration: 1969-01-01

Description

Jan. 1, 1952 C, L ELDH 2,581,179

PATTERN SCRIBING TOOL Filed March 28. 1947 2 SHEETS-SHEET l p J v 15 a 5 9 INVENITOR.

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H TTYS Jan. 1, 1952 c. L. ELDH 2,581,179

PATTERN SCRIBING TOOL Filed March 28, 1947 2 SHEETS-'SHEET 2 INVENTOR. C. L. EL 0']:

HTTYS Patented Jan. 1, 1952 UNITED STATES PATENT OFFICE PATTERN SCRIBING TOOL Clarence L. Eldh, Stockton, Calif.

Application March 28, 1947, Serial No. 737,929

3 Claims.

I This invention relates generally to a tool adapted for use by a workman cutting a floor covering to fit a room having an irregular floor pl I The invention is directed particularly to, and it is an object to provide, a novel hand tool for forming a pattern corresponding to a floor shape, and then transposing said pattern to a piece of linoleum or the like for cutting to fit such floor shape.

' Another object of the invention is to provide a hand tool arranged for use in one position to score a sheet of heavy paper, lying on a room floor, with the exact edge configuration of the floor shape; and in another position, working from the scored or patterned sheet of paper, to scribe such pattern on a piece of linoleum preparatory to cutting the same to shape.

A further object of the invention is to provide a hand tool, for the purpose described, which comprises an elongated body having a wall engaging guide nub projecting from one end and a sheet scoring blade depending, in longitudinally spaced relation, from the bottom of the body, and a guide fin and scribing point projecting, in longitudinally spaced relation, from one side of the body; the guide nub and scoring blade being usable to form the pattern on the paper sheet, and the guide fin and scribing point being usable to transpose the pattern onto the linoleum, all as hereinafter described in detail.

A further object of the invention is to provide a practical, convenient, and readily portable pattern tool, which will be exceedingly effective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings:

Fig. 1 is a perspective view from one side thereof.

Fig. 2 is a perspective View taken from the other side-of the tool.

Fig. 3 is a bottom plan view partly broken away.

Fig. 4 is a cross section on line 4-4 of Fig. 3.

Fig. 5 is a diagrammatic plan view illustrating the manner of use of the tool to score the pattern.

Fig. 6 is a diagrammatic plan view illustrating the manner of use of the tool to transpose the pattern to a piece of linoleum.

Referring now more particularly to the characters of reference on the drawings, and at present to Figs. 1-4, inclusive, the device comprises of the tool taken an elongated. body, indicated generally at I, rounded at its forward end on top, as at 2, for convenience of finger engagement.

At the front end portion thereof the bottom 3 of the body I is recessed for matching reception of a base plate 4 held in place by screws 5;

At one front corner the base plate 4 is formed with a forwardly and outwardly projecting guide nub 6.

At the rear edge of the base plate 4 the body I is fitted with a transversely extending, rigid cross strip 1 held in place in a transverse slot in said body by means of a tongue 8 on the rear edge of the base plate engaging in matching relation in a notched portion of the cross strip I.

At the end adjacent the guide nub 6 the cross strip l' is formed with a scoring blade 9 which depends some distance below the bottom 3 and base plate 4 of the body I; said scoring blade 9 being sharpened.

At the opposite end from the scoring blade 9 the cross strip I is formed with a laterally, outwardly projecting guide fin It.

A scribing point II is engaged in a transverse bore I2 and projects laterally outwardly from the same side of the body I as the guide fin II]; the scribing point II being spaced from said guide fin Ill lengthwise of the body in a rearward direction. The scribing point II is held in place by a set screw I3.

The body'I is formed with a cavity I4 initially open to the rear end of said body, but closed by a removable screw plug I5. The cavity I4 provides for the storage of extra scribing points II, and if desired, strips I with the blade 9 and fin I0 thereon. I

The above described hand tool is used by a workman, for patterning a floor covering to shape, in the following manner:

In Fig. 5 there is illustrated, by diagrammatic plan, an irregular wall IB, whose wall line is indicated generally at ii. The line I! may also represent the outline or'configuration of a floor supported room fixture.

The first step, to pattern a piece of linoleum for cutting to fit the edge I1, is to lay a rough cut sheet l8 of relatively heavy building paper or the like on the fioor I9. Then, with the tool in hand, bottom side down, the nub 6 is engaged with the wall line H, with the body I projecting outwardly therefrom at right angles. The tool is then drawn along the wall, transversely of said tool, in the direction indicated by the arrow in Fig. 5. With this motion of the tool, the then downwardly projecting blade 9 scores a line 20 on the pattern sheet 18 which exactly follows the configuration of the wall line or edge l7.

When the score line 26 is completed the pattern sheet I8 is removed from the room and, as shown in Fig. 6, is superimposed directly upon a piece of linoleum 21 which is to be out to fit the wall line H. This can be done outside the room, Where more space is available.

With the scored pattern sheet I8 on the piece of linoleum 2I,t he workman takes the tool in hand and disposes it in position with the guide fin H! and scribing point H projecting downwardly; such position being the reverse, endwise, relative to the position of the tool as in Fig. 5. In this relatively reverse position the guide fin I is disposed on the score line as with the scribing point I I bearing against the piece of linoleum 2|. With the tool in this position it is drawn in the direction indicated by the arrow in Fig. 6, with the guide fin i0 accurately following the score line 29 on the pattern sheet I 8. At the same time the scribing point ll cuts a line 22 on the piece of linoleum 2|, which line exactly corresponds to the wall line H. In this manner the piece of'linoleum 2| may be cut to exact floor shape outside of the room in which the floor covering is tobe used.

The tool thus provides a very practical, convenient, and easy-to-use means for the pattern cutting of fioor covering.

From the foregoing description it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention as defined by the appended claims.

Having thus described the invention, the following is claimed as new and useful, and upon which Letters Patent are desired:

1. A pattern scribing tool comprising an elongated body of polygonal cross section, the bottom of the body being provided with a substantially rectangular recess, a plate fitted into the recess and being detachably secured to the body, a guide nub on the plate projecting forwardly of the body, the body being provided with a transverse slot cut into its bottom side to the rear of the recess, a cross strip fitted into the slot, such cross strip being provided with a. notch in its bottom edge. a'tongue on the inner edge of the plate. such tongue projecting into said notch whereby to maintain the cross strip in position in the slot, and a scoring blade on the cross strip depending below the bottom of the body.

2. A tool for scribing a pattern on a piece of linoleum of a size and shape to fit a room floor surface, such tool comprising an elongated body of polygonal cross section, a first guide element at one end of the body adapted to be engaged with and moved along the side wall of the room, a scoring element depending from one surface of the body in spaced relation rearwardly of the first guide element and effective upon movement of the tool, with the guide element against the wall, to score a line pattern of the floor surfacev of the room upon a pattern sheet laid on the floor of the room, a second guide element projeoting laterally out from another surface of the body and adapted to be engaged with and moved along the line of the pattern found on the pattern sheet, a scribing point projecting outwardly from said last named surface and spaced a distance from the second guide element equal to the distance between the first guide element and the scoring element, whereby the second guide is adapted to be moved along the outline of the pattern scribed on the sheet, with the scribing element positioned to project beyond the outer edge of the pattern sheet and onto the surface of a piece of linoleum below the pattern sheet, and to scribe a pattern on the linoleum which will conform with the size and shape of the floor surface of the room; and a plate detachably mounted on said one surface of the body adjacent one end of the body, the first guide element being integral with said plate and projecting beyond said one end of the body.

3. A tool for scribinga pattern on a piece of linoleum of a size and shap to fit a. room floor surface, such tool comprising an elongated body of polygonal cross section, a first guide element at one end of the body adapted to be engaged with and moved along the side wall of .the room, a scoring element depending from one surface of the body in spaced relation rearwardly of the first guide element and effective upon movement of the tool, with the guide element against the wall, to score a line pattern of the floor surface of the room upon a pattern sheet'laid on the floor of the room, a second guide element projecting laterally out from another surface of the body and adapted to be engaged with and moved along the line of the pattern found on the pattern sheet, a scribing point projecting outwardly from said last named surface and spaced a distance from the second guide element equal to the distance between the first guide element and the scoring element, whereby the second guide is adapted to be moved along the outline of the pattern scribed on the sheet. with the scribing element positioned to project beyond the outer edge of the pattern sheet and onto the surface of a piece of linoleum below the pattern sheet, and to scribe a pattern on the linoleum which will conform with the size and shape of the floor surface of theroom; and a rigid cross'strip recessed into the'bod'y', the scoring element and the second guide element being integral with said cross strip, a removable plate on said one surface of the body adjacent one end of the body, the first guide element comprising a nub formed integral with said plate and projecting beyond said one end of the body, and means on the plate releasably maintaining the strip in position in the body.

CLARENCE L. ELDH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS