US2745179A - Scoring tool - Google Patents

Description

May 15, 1956 o. D. JENSEN ET AL 2,745,179

SCORING TOOL Filed July 15 1953 vsF'i'mZg [l4 3' OD. Jensen ATTORNEY SCORING TOOL Ole D. Jensen and Victor S. Fleming, Omaha, Nebn; said Fleming assignor to said Jensen Application July 13, 1953, Serial No. 367,654

Claims. (Cl. 30-304) This invention relates to tools particularly adapted for removing wall-paper from walls and of the type adapted to be used in the palm of a hand, and in particular a tool using used safety razor blades for forming serrations in wall-paper to facilitate penetration of moisture, such as steam, to the adhesive between the wall-paper and surface of a wall, or wall-board, upon which the wall-paper is mounted.

The purpose of this invention is to expedite the removal of wall-paper from a wall where the wall-paper is being removed by being saturated with moisture to loosen the glue or other adhesive by which the wallpaper is secured to the wall.

Removing wall-paper has always been a difficult problem as the glue or other adhesive securing the wall-paper to a wall must be dissolved and as paper, particularly when glazed with glue, turns water and steam it is difficult to penetrate the surface and saturate the paper sufiiciently to loosen the adhesive. Furthermore, many types of wall-paper are chemically treated and in some rooms the wall-paper is coated with grease and the like, which makes it very difficult to reach the adhesive under the wall-paper.

With this thought in mind this invention contemplates a scraping or scratching tool in which a plurality of blades having sharp cutting edges and particularly corners are removably mountedin an end of a handle whereby with the handle gripped in a hand the blades extend for engagement with wall-paper on a wall upon which the tool is used wherein the blades may cut through the outer surface and into the body of the wall-paper.

The object of this invention is, therefore, to provide means for forming a tool thatis adapted to cut into wallpaper to facilitate saturating the paper with moisture.

Another object of the invention is to provide a tool for cutting serrations into wall-paper in which used safety razor blades are used as the cutting elements.

Another important object of the invention is to provide a hand actuated tool for opening up wall-paper tofacilitate removing the paper with which the wall-paper may be cut in crisscross lines or serrations.

In instances where wall-paper has been placed over wall-paper on a wall, and in some instances several layers, one over another, are used on walls, it is difficult, if not impossible for steam and the like to penetrate to the first coat of adhesive between the layer of wall-paper next to the wall and the surface of the wall. For this reason it is another object of this invention to provide a tool for serrating wall-paper in which the cutting elements are adapted to cut through several layers of Wall-paper in order to expose the adhesive between the layer of paper against the wall surface and the surface of the wall to steam and the like.

A further object of the invention is to provide a tool for serrating wall-paper on a wall in which the cutting elements, being used safety razor blades, may be removed and replaced, substantially without cost, when the blades become dull or broken.

" nited States Patent 0 ice A still further object of the invention is to provide a wallpaper cutting tool which facilitates saturating the paper with steam and the like, in which the tool is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a blade mounting cylinder having diagonally disposed blade receiving slots therein with blades having cutting edges removably mounted in said slots, a handle formed with two substantially complementary sections having cylinder gripping elements in one of the ends thereof, and bolts extended through the sections of the handle for clamping the cylinder in the handle and the blades in the cylinder;

Other and further objects and advantages of the invention will become readily apparent from the following detailed description. 2

The views used to illustrate the new hand tool are as follows:

Figure l is a plan view of the improved scoring tool with parts of the upper section of the handle broken away to illustrate the clamping parts thereof.

Figure 2 is a side elevational view of the scoring tool showing the means for clamping the blade holding element in the handle, and with part of the upper section of the handle broken away and shown in section.

Figure 3 is an end elevational view of the improved wall-paper scoring tool, looking toward the end in which the cutting blades are positioned. I While one embodiment of the invention is illustrated in the above referred to drawings, it is to be understood that they are merely for the purpose of illustration and that various changes in construction may be resorted to in the course of manufacture in order that the invention may be utilized to the best advantage according to the circumstances which may arise, without in any way departing from the spirit and intention of the device, which is to be limited only in accordance with the appended claims. And while there is stated the primary field of utility of the invention it remains obvious that it may be employed in any other capacity wherein it may be found applicable.

In the accompanying drawings, and in the following specification, the same reference characters are used to designate the same parts and elements throughout and in which the numeral 8, refers to the invention in its entirety, theinvention including a handle having a lower section it an upper section 12, and bolts 14 and 16 which clamp the sections of the handle around a cylinder or tube 18 of resilient material in which blades 20 are secured in slots 22. I

The sections of the handle are substantially triangular shaped in plan being formed with wide ends 24 and 26 and arcuate ends 28 and 30, the ends 28 and 30 forming substantially a semi-circle. The section 10 is provided with an arcuate flange 32 that extends along the sides and around the end 28, and the section 12 is provided with a similar flange, as indicated by the numeral 34. As illustrated in Figure 2, the flange 34 of the upper section 12 over-laps the flange 32 of the lower section 10 at the extended end of the handle.

Also, as illustrated in Figure 2, the wide end 24 of the section it is bent under from the point 36, providing an arcuate cylinder gripping flange 33, and the wide end 26 of the upper section is provided with a similar arcuate flange 4t), being bent under at the point 42.

The bolts 14 and 16 extend through aligned openings .in the upper and lower sections of the handle and the 3. able material and, as shown in Figure 3, the blade holding slots 22 are diagonally positioned whereby sharp cutting edges 48 of the blades extend downwardly. It will be understood that as many cutting blades may be used as may be desired, and the length of the cylinder may be regulated to correspond with the number of blades.

The improved scoring tool of this invention provides a device that is particularly adapted for cutting serrations in. wall-paper, and although the most eflicient motion is suggested. as being crisscross it will be understood that the serrations may be cut in any suitable pattern. The shaip edges of safety razor blades cut through the Wallpaper, even though several thicknesses of paper are on the wall, and. with the wall-paper cut through in this manner water, steam, and the like may penetrate through the body of the wall-paper, saturating the same and, thereby, reaching. the glue or other adhesive between the paper and surface of a wall.

From the foregoing specification it will become apparent that the invention disclosed will adequately accomplish the functions for which it has been designed and in an economical manner and that its simplicity, accuracy and ease of operation are such as to provide a relatively inexpensive device considering what it will accomplish and that it will find an important place in the art to which it appertains when once placed on the market.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description. in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Changes in shape, size, and arrangement of detailsand parts such as come within the purview of the invention claimed may be resorted to in actual practice, if desired.

Having now described the invention that which is claimed to be new and desired to be procured by Letters Patent, is:

1. A scoring tool comprising a handle having a lower section and a complementary upper section, said sections having opposed coacting arcuate flanges extended inwardly from corresponding ends thereof at one end of the handle, a tube of resilient material having spaced diagonally positioned cutting blade holding slots extended therethrough, safety razor blades retained in said slots by resiliency inherent in the material of the tube, said tube being nested in the opposed flanges of the sections of the handle, and bolts having nuts thereon extended through the sections of the handle for clamping the said sections against the tube.

2. In a wall-paper cutting tool, the combination which comprises a pair of substantially complementary handle sections having opposed arcuate gripping elements on their inner surfaces and positioned at one end of the tool, a tube of resilient material nested in said arcuate gripping elements said tube having spaced diagonally positioned slots extended therethrough, blades having sharp cutting edges positioned in said slots, the resiliency inherent in the tube providing means for holding the cutting blades in said tube, and means for clamping the tube between the sections and in said arcuate elements.

d 3. In a wall-paper scoring tool, the combination which comprises a handle having a lower section, one end of which is bent inwardly providing an arcuate flange on the inner surface of said one end of the section, and a complementary upper section also having an inwardly bent arcuate flange on the inner surface of the one end corresponding to the said one end of the lower section,

a tube of resilient material having diagonally disposed slots extended therethrough positioned between said arcuate flanges of the lower and upper sections, blades having sharp cutting edges positioned in said slots, and means for clamping said tube in position between the said arcuate flanges of the sections.

4. In a scoring tool, the combination which comprises a handle having a lower section, one end of which is bent inwardly providing an arcuate gripping flange on the'inner surface of one end thereof, a complementary upper section also having one end bent inwardly providing an arcuate gripping flange on the inner surface and at one end thereof, said sections having arcuate overlapping flanges on edges of the ends thereof opposite to the ends on which the arcuate gripping flanges are positioned, and belts with nuts thereon extended through said sections for clamping the sections together, a rubber tube having diagonally disposed slots extended therethrough secured in said arcuate flanges of the sections, and safety razor blades extended through the slots of said rubber tube.

5. In a wall-paper scoring tool, the combination which comprises a pair of complementary hollow handle sections substantially triangular-shaped in plan and having arcuate over-lapping edges at the small ends thereof, said sections being turned under at the wide ends providing arcuate opposed gripping flanges between the said wide ends, a tube of elastic material having diagonally disposed slots therein extended through said wide ends of the handle sections and nested in said arcuate gripping flanges, safety razor blades having beveled corners on extended ends mounted in said diagonally disposed slots and retained in the tube by resiliency inherent in the material thereof, and bolts extended through the handle sections for retaining the arcuate flanges of the sections in gripping relation with said tube.

References Cited in the file of this patent UNITED STATES PATENTS 559,838 Black May 12, 1896 797,857 Kulenkamptf Aug. 22, 1905 1,176,257 Velcansky Mar. 21, 1916 1,620,138 Sokolowski Mar. 8, 1927 1,838,752 Elfstedt Dec. 29, 1931 1,903,877 Potter Apr. 18, 1933 1,943,252 Abrahamsen Ian. 9, 1934 2,084,570 Beck June 22, 1937 2,435,349 Hall Feb. 3, 1948 2,471,763 Merrick May 31, 1949 2,590,966 Heller Apr. 1, 1952 FOREIGN PATENTS 217,499 Great Britain June 19, 1924

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