US2296232A

US2296232A - Scribing tool for wall linoleum and similar coverings

Info

Publication number: US2296232A
Application number: US312331A
Authority: US
Inventors: Herbert D Drain
Original assignee: ROY F HULL
Current assignee: ROY F HULL
Priority date: 1940-01-04
Filing date: 1940-01-04
Publication date: 1942-09-15
Anticipated expiration: 1959-09-15

Description

Sept. 15, 1942. H. D. DRAIN 2,296,232 4 SCRIBING TOOL FOR WALL LINOLEUM AND SIMILAR COVERINGS Filed Jan. 4, 1940 INVENTQR. Heme/"5H fl/cum ATTORNEY5 Patented Sept. 15, 1942 SCRIBING TOOL FOR WALL LINOLEUM AND SIDIEAR COVERINGS Herbert D. Drain, Chicago, Ill., assignor of oner half to Roy F. Hull, Chicago, Ill.

Application January 4, 1940, Serial No. 312,331

3 Claims.

In applying linoleum and similar coverings to the surfaces of walls it is important that the edges of the material which are located in corners and about window casings and other cabinet work be cut with the utmost accuracy, as any irregularities or gaps along such edges will spoil the appearance of the work.

The object of this invention is to provide a simple, easily manipulated tool which will accurately mark the material, so that when the material is thereafter out along the marked line the cut edge will fit snugly and evenly into the corner for which cut. The improved tool is light, strong and inexpensive, requires no special skill in its use, and can be readily adjusted to compensate for corners having different angles.

While the foregoing Statements are indicative in a general way of the nature of the invention, other more specific objects and advantages will be apparent to those skilled in the art upon a full understanding of the construction and manner of use of the improved tool.

A preferred embodiment of the invention is presented herein for the purpose of exemplification, but it will of course be appreciated that the invention is capable of being embodied in other structurally modified forms coming equally within the scope of the appended claims.

In the accompanying drawing:

Fig. 1 is a perspective view of the tool, showing the way in which it is used in marking the upper edge of a sheet of linoleum applied to a wall, so that when the linoleum is subsequently out along the marked line the cut edge will fit snugly into the corner present between the wall and the ceiling;

Fig. 2 is a view of one side of the tool;

Fig. 3 is a view of the other side of the tool;

Fig. 4 is a top view of the tool;

Fig. 5 is a bottom view; and

Fig. 6 is a front edge view.

As will be observed in the drawing, the tool is characterized by a small thin flat sided frame H], which is preferably about the size of the palm of ones hand. The bottom edge I l of the frame 4 is straight; the front edge 12 extends upwardly and rearwardly at an acute angle to the bottom edge; the rear edge I3 extends straight up; and the top edge l4 extends rearwardly and downwardly at a slight inclination from the upper end of the front edge to the upper end of the rear edge. The top edge ll of the frame is shaped to provide a hand grip [5. The other edges of the frame, and particularly the bottom enable the tool to mark the material accurately even though the tool be tilted slightly with respect to the surface of the material.

The lower front corner l6 of the frame is curved on an are, about a center [1, and a disk l8 of the same size and curvature as the noselike corner [6 is set into a recess I9 formed in one side of the corner I6, in a position flush with such corner. The disk I8 is mounted at its center on an adjusting screw 20, which screw when loosened permits the disk to be rotated through a small angle. The disk l8 contains a socket 2| in which a small marking pin 22 is secured by a set screw 23. The pin 22 projects from the curved corner l6 of the frame above the plane of the bottom edge II, the distance above such plane being determined by adjustment of the disk l8, as indicated on a scale 24 provided on the meeting edges of the frame and disk.

The rim of the disk I8 is preferably provided with a small horizontally extending groove 25 at the point of entry of the pin 22, which groove tends to prevent the pin from becoming clogged with fine pieces of the material being marked. The bottom edge H of the frame is provided with anti-friction rollers 26. These rollers project slightly below the bottom edge ll into engagement with the surface of the material being marked.

The tool may be used in the following manner: In applying a piece of linoleum 21 to a side wall 28, and in preparing to cut the upper edge of the linoleum to fit accurately into the corner between the wall 28 and ceiling 29, the

'tool is slid horizontally along the upper portion of the linoleum in the corner after all but the upper edge of the linoleum has been cemented in place. The curved nose [6 of the tool is pressed tightly against the outwardly turned margin 30 of the linoleum and at the same time the tool is moved horizontally. As this movement takes place the pin 22 cuts a fine groove 31 in the linoleum. As soon as the linoleum has been 5 marked in this manner for the full length of the corner the tool is removed and the linoleum is out along the marked line 3|. The resulting edge, when pressed back into the corner will accurately fit the same, without any irregularities or gaps. The pin 22 is preferably set, in all positions of the latter, at an angle to the radius of the nose l6 at the location of the pin, with the result that the groove 3| will extend at an angle into the surface of the linoleum, thereby producand front edges II and 12, are rounded off to ing a reverse beveling or undercutting of the edge, which further aids in the production of a tight and practically invisible joint.

In marking material for a corner in which the two meeting surfaces do not come together at a right angle, the position of the disk I8 is changed to compensate for the particular angle encountered, the pin 22 being moved further away from the bottom edge H when the angle is found to be less than a right angle and being moved closer to the bottom edge when the angle is found to be more than a right angle, the proper position of the disk I 8 for any particular angle being indicated on the scale 24.

I claim:

1. A scribing tool for wall linoleum and similar coverings, characterized by a substantially rigid frame having bottom and front edges arranged at an acute angle to each other, a hand grip above the bottom edge, a curved nose at the junction of said edges for engagement with the material to be marked, and a stationary marking pin projecting from the nose with its tip above the plane of the bottom edge.

2. A scribing tool for wall linoleum and similar coverings, characterized by a substantially rigid frame having bottom and front edges arranged at an acute angle to each other, a hand grip above the bottom edge, a curved nose at the junction of said edges for engagement with the material to be marked, and a stationary marking pin projecting from the nose with its tip above the plane of the bottom edge, said pin being disposed at an angle to the radius of the nose at the location of the pin.

3. A scribing tool for wall linoleum and similar coverings, characterized by a substantially rigid frame having transversely rounded bottom and front edges arranged at an acute angle to each other, a hand grip above the bottom edge, a curved nose at the junction of said edges for engagement with the material to be marked, and a stationary marking pin projecting from the nose with its tip above the plane of the bottom edge, said pin being adjustable in an arc about the center of curvature of the nose for use in marking material to fit into corners having different angles.

HERBERT D. DRAIN.