US2466357A - Try square scriber attachment - Google Patents

Description

April 5, 1949. w. K. BEITH 2,466,357

- TRY SQUARE SCRIBER ATTACHMENT Filed=Sept 5, 1944 2 Sheets-Sheet 1 vFIB.

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g E 'ttorneys v Patented Apr. 5, 1949 UNITED STATES PATENT OFFICE TRY SQUARE SCRIBER ATTACHMENT William Kirk Beith, Joseph, Oreg. Application September 5, 1944, Serial No. 552,750

1 Claim.

This invention relates to a novel and improved attachment for a conventional try square, said attachment being adapted to hold and carry either a scribing instrument or pencil, whereby, when the attachment is in place, it may be conveniently and expeditiously employed to mark straight lines on a piece of work, to thus lay out the work for accurate cutting and other purposes.

Briefly, the preferred embodiment of the invention is characterized by a sheath-like adapter which slidably receives the coasting part of the try square, this adapter having an accommodation wing perpendicularly arranged, said wing provided with a latch-like detent and a clip, the latter to accommodate the marking pencil.

In carrying out the principles of the invention, I have perfected a simple, practicable, readily attachable and detachable scriber, this of such form and construction as to aptly achieve the desired ends.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the same:

Figure 1 is a top plan view of a conventional try square, the novel attachment being mounted thereon, and the method of use being suitably illustrated.

Figure 2 is a top plan view of the scriber attachment per se.

Figure 3 is a side elevational view of the same.

Figure 4 is an end elevation of said attachment observing it in a direction from right to left in Figure 3.

Figure 5 is an end view of the same in an opposite direction, that is, from left to right in Figure 3.

Figure 6 is a section taken on the plane of the line 6-6 of Figure 2, looking in the direction of the arrows.

Reference being had to Figure 1, the work is denoted by the reference character A, the try square being differentiated by the reference character B. This try square is conventional and includes the customary handling frame C and ruler or scale D.

The attachment, as a unitary device, is denoted by the numeral 1. This part is best illustrated in Figures 2 to 6, inclusive. Reference being had to these particular figures, it will be seen that the adapter for fitting the device on the scale D is denoted by the numeral 8. This is in the form of a rectangular sheath and comprises a top plate 9, a bottom plate Ill and transverse end spacing members or shims H, the three parts fastened together to form the sleeve or sheath. The upper plate is provided with a slot l2. Also mounted on this is a perpendicular wing I3 having an extension, that is, an elevated extension, l4 joined to the wing proper by an ofiset web or angular portion l5. This extension I4 is provided with a clip l6 having its end portions fastened to the plate, as at H, said clip constituting a socket for the pencil 48. A latch is provided as a retainer and an adjuster for the attachment. The latch comprises a finger piece l9 provided with a laterally directed cam-like detent 20, this pivoted in place, as at 2|, on the wing l3. The cam is of a length and shape that its binding nose projects down through and beyond the slot 12. Thus, the nose projects into the space between the two plates 9 and Ill where it is engageable with the scale D, as is evident from the drawings.

In Figure 3 we see the latch in open position in dotted lines and in closed position in full line. This serves to bring out the mounting and functioning of said latch. In Figure 1 we see the attachment on the try square, specifically on the part D of said try square. It is evident from these figures combined that the detent 20 is frictionally bound against the scale D, whereby to temporarily fasten the attachment on the same at the desired point. It is further evident that the pencil is adjusted in the clip or socket i6 and held by a thumb screw 22. Consequently, as the try square is shifted back and forth, the pencil marks the lay-out line E.

A careful consideration of the foregoing description in conjunction with the invention as illustrated in the drawings will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty suflicient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size, materials and rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention as claimed.

I claim:

An attachment for a try square comprising a sheath-like adapter open at opposite ends and. designed to be fitted and slidably mounted on the ruled part of a conventional type try square, one wall of said adapter having a detent accommodation slot, a lateral wing mounted rigidly on the slotted wall of said adapter, said wing having an end extension projecting outwardly beyond the adapter and said extension being provided on one REFERENCES CITED side adJacent 1ts outer end with a pencil holding clip, a cam-like detent; pivotally m unt d on i The following references are of record in the wing and projectable into and ooacting with said file of this patent! slot and adapted to engage the aforementioned UNITED STATES PATENTS part of the try square to lock the adapter on sad part, said detent being provided with a lateral Number Name Date finger-piece disposed alongside of the wing and 805216 Lynch 21, 1905 over the adapter and located inwardly of the outer 1 l g end of said extension for conveniently accessible 10 Phillips 1944 and operational purposes.

WIILIAM KIRK BE-ITH.

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