US1835364A - Paper-hanger's straightedge and cutter guide - Google Patents

Description

Patented Dec. 8, 1931 UNITED STATES EMANUEL J. WOERNER, OF CHICAGO, ILLINOIS PAPER-HANGERS STRAIGHTEDGE AND CUTTER GUIDE Application'filcd March 27, 1928.

This invention relates in general to implements employed in the paper-hangers trade and more especially to improvements in straightedges and cutter guides.

One object of this invention is the construction of a straightedg-e preferably from extruded duralumin to form acne-piece structure, thereby causing the structure to remain true under all conditions and as long as it may be used, since it is unaffected by heat or humidity or any atmospheric or climatic condition. y

Another object of this invention is the formation of a specially formed groove running longitudinally of the body portion to form a cutter guide, whereby when the straightedge is in use it canbe placed in the desired position upon the paper to be trimmed and a suitable form of cutter or trimmer may be passed along one side edge portion of the straightedge, being guided by the groove, thereby trimming the paper.

Another object of this invention is the construction of a straightedge in such manner that although a one-piece structure is pre sented, it has reinforcing members formed as parts of the straightedge to prevent the structure from warping and at the same'time constituting supports upon which the structure rests when it is in use.

With the foregoing and similar objects in view, this invention consists of combinations, arrangements and assembly of parts as will be more fully set forth herein and will be fully illustrated in the drawings, wherein like reference numerals will indicate like parts in the several views, in which Fig. 1 is a top plan view of the improved paper-hange1"s straightedge and cutter guide, partly broken away;

Fig. 2 is a fragmentary bottom plan view of the device; and

Fig. 3 is an end view of the instrument.

Referring more specifically to the. drawings, in which like reference numerals indicate like parts in the several views, 5 indicates the elongated and comparatively narrow body portion, which is thickened as indicated at 6. This thickened portion 6 extends from a point near the center of the body por- Serial No. 350,311.

groove This formation of the groove and flange prov'des a structure'for receiving and retaining the carriage of a suitable cutter or trimmer during its movement alone the straightedge. It is not deemed necessary to illustrate the cutter or trimmer, since such contrivance is not a part of this invention and any suitable cutter may be employed. The

face 12 of the thickened portion is even and perpendicular to form a cutter edge, since the cutter or trimmer disk will move along this face.

Reinforcing ribs .13, 14, and 15 are formed upon the body portion 5 and extend longitudinally thereof, asillnstrated in Fig. 2. It is desired to make this straightedge as, light as possible, consistent with durability and trueness under ll conditions. Therefore the body portion 5 is comparatively thin, except at the thickened portion 6 and this portion is only thick enough to have the groove '7 formed therein. Consequently, owing to 'th rather thin construction of this straightedge, as illustrated Fig. 8, the provision of the ribs will reinforce the body portion and will prevent warping. The rib 13 is broader than the 14%, but the lower edges of these two ribs terminate in the same horizontal plane and thus furnish firm supports for the straightedge when it is placed upon a table for use. 7 The r'b 15 is solely for strengthening the central portion of the body portion 5, since it tern -i ates above the plane of the lower edges of the ribs 13 and 1e thus any chance of a. rocker c ice is eliminated.

In the formation of this straightcdn e extruded duralumin is employed, which, as is known, is the forcing of soft metal into a form. The normal composition of duralumin is-1nagnesium 0.6, silicon 1.0, aluminummin. 96.5. Thus the several elements of the straightedge are formed in a single operation and the structure is therefore produced at a very reasonable expense. Because of the unitary construction of the device it is rigid and true at all times and will last indefinitely, owing to the reinforcements.

In operation the straightedge and cutter guide is placed upon a table supporting the wall paper and it will rest upon the ribs 13 and 14. The face 12 will be in alignment with the portion of the wall paper to be cut. The cutter .or trimmer is then moved within the groove and the movement of the cutter or trimmer will be true, owing to the manner in which it will be held upon the straightedge.

The straightedge should be about six feet long and is rather narrow, although it is obvious that I do not limit myself to any dimensions. While I have specifically described and illustrated the present invention, changes may be made in the detail arrangements and assembly without departing from-the spirit of the discovery, as long as such changes do not exceed the scope of the invention as claimed.

Having described the present invention, what I claim is new and desire to protect by Letters Patent is:

As an article of manufacture, aone piece straight-edge formed from metal and comprising a comparatively thin body which is thickened at one side portion thereof, said thickened portion having an implement groove formed therein and extending longitudinally thereof, whereby the greater width of the thickened portion is finally thinned to the same thickness as the other side portion of the body, said body having an un der side provided with longitudinally extending ribs, said ribs being comparatively thin but elongated perpendicularly, thereby reinforcing said body and forming supports therefor, thus forming a light but strong metal straight-edge, as and for the purposes set forth.

In testimony whereof I hereto affix my signature.

EMANUEL J. .VOERNER.

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