US1635874A - Combination cut-off scriber and bevel square - Google Patents

Description

- July 12, 1927. 1,635,874

R. A. WYNKOOF COMBINATION CUT-OFF SCRIBER AND YBEVEL SQUARE Filed Sept. 2'7, 1926 JNVENTOR.

A TTORNE Y.

Patented July 12, 1927.

UNITED STATES PATENT OFFICE.

ROY A. WYNKOOP, 013 DETROIT, MICHIGAN.

COMBINATION ,CUT-OFF- SCRIBER AND BEVEL SQUARE.

Application filed September 27, 1926. Serial No. 137,914.

The object of my invention is to produce a cut-off scribing tool adapted for carpenter work, and especially for joinery in Window A further ob ect is to produce a combina* tion tool in the form of a cut-off scriber and having a detachable blade thereon adapted for use as a bevel square.

A still further object is to produce a com-l bination cut-off and bevel square gage that is simple in construction, easily and ethciently operated'and can be manufactured at a. low cost.

These several objects are attained inthe} preferred form by the construction and arrangement of parts more fully hereinafter set forth. I

Similar parts on the drawings are marked by similar numerals.

. Fig. 1, is aside view of my device showing the general combination of the working parts. c

Fig. 2, is a top view of the device showing the attached blade for converting the device into a bevel square. v

Fig. 3, is a bottom view showing the angle bars, and means of attaching same thereon.

Fig. 4 is an end view of the gage bar showing the means of attaching the adjustable member thereon.

Fig. 5, is an illustration of the use and application of the tool when applied to casing joinery. j

I will now describe more fully the detailed construction of my device, referring to the drawings and the marks thereon.

The gage bar -1- is made of a thin, flat sheet metal bar, preferably of steel, and is provided with a slotted recess -2- for nearly the entire length thereof. One end of the gage angles to said bar, forming an angle bar -3- projecting therefrom, and of a length slightly greater than the thickness of the casing on which the device is to be used. Preferably projection 3 is about one inch long, that being greater than the thickness of the ordinary casing material. Slidably mounted on the gage bar 1 is an adjustable angle bar t-, also made of thin sheet bar -1- is formed at right .metal and bent in a right angle, and having edge guides --5 formed thereon for engaging the edges of the gage blade 1-. The adjustable angle bar 4: is fixedly clamped to the gage bar '1 by means of the bolt -*(3 and the thumb nut 7 screwed thereon. The bolt -6 is passed through a central hole in the angle bar and engages the slotted recess 2 of the gage bar, but free to slide and adjust thereon. In all cases the projecting legs -a of the angle bars 3 and -l are made flush with the edges of the gage bar 1, in order to bring the edge of said gage bar in true alignment for scribing the joinery line;

Attached to the bolt 6 isia detachable blade 8, also formed of a thin meta bar, preferably of a width and length equal to that of the gage bar 1, and is provided with a pivot slot 9 in one end thereof, said slot being ofa design and size to allow same torbe hooked over the bolt 6 when the nut7- is loosened thereon, said blade 8 being capable of swinging to any desired angle with the attached gage blade -1, and thus converting the tool into a bevel square to be used and operated in the ordinary manner of bevel squares. The angle bars 3 and -l acting as the edge guides for the blade -8 when used as a bevel square.

Fig. 5 illustrates the application of my device to joinery in a window or door casing member, where jointing the vertical casing -10 to the topcasing member 11- already in place. The gage bar 1- being placed over the casing member -10- and the angle bars --3 and -4 fitted or 'ad justed along the edges thereof, and the whole device adjusted along the casing member until the edges of the said angle bars engage the edge of the top casing member 11,

Along the opposite edge of the gage blade --1-- are a series of angle points 21 formed thereon, for indicating the position of the detachable blade 8, when the connecting pivot -6- is at the extreme end of the slot 2--, for determining approxiniate angles therewith, thus converting the tool into a protractor suitable for carpenter work.

It will be noticed that by the construction as hereinbefore set forth, and by providing the slot 2- to extend nearly the entire length of the gage blade 1-, that the adjustable angle bar 4-- may be moved to coincide with the fixed angle bar 3 at the end, and the detachable blade 8- reversed to coincide with the said gage blade, that the tool will close into a comparatively small place for convenience in packing.

Having fully described my scriber and bevel square, what I claim as my invention and desire to secure by Latters Patent is;

1. A combination cut-off scriber and bevel square adapted to use for carpenter joinery, comprising a thin metal gage blade having a slotted recess formed "nearly the entire length thereof and having one end oi said blade bent at right angles to the side of said blade, and forming an end angle bar thereby, an adjustable angle bar slidably mounted on said gage blade, capable of being moved to any desired position thereon, bolt n'ieans engaging said adjustable angle bar and the slotted recess of the gage bar, and a detachable blade ineinber engaging said bolt, said detachable blade being capable of turning to any desired angle with said gage blade.

2. A combination cut-off scriber and bevel square adapted for carpentry joinery, comprising a thin metal gage blade having a slotted recess formed for nearly the entire length thereof and having one end of said blade bent and forming a right angle therewith, an adjustable angle bar slidably mounted on said gage bar and capable of sliding substantially the entire length of said gage bar, a bolt for clamping said adjustable angle bar in any desired position thereon, a detachable blade pivotally mounted on said bolt and capable of turning to any desired angle thereon, both of said blades being provided with graduations along one edge thereof for forming a continuous linear scale when extended in a straight line about the connecting bolt, and the opposite edge of the gage bar graduated with angle points for setting the detachable blade to any desired approximate angle with the said gage blade.

I In Witness whereof I sign these specificm tions.

ROY A. WYNKOOP.

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