US1050969A - Framing-tool or protractor. - Google Patents

Description

D. C. McLEOD.

FRAMING TOOL 0R PROTRAUTOR.

I ,APPLIOATION FILED MAR. 30, 1911.

1,050,969. Patented Jan. 21, 1913.

Witnesses Inventor 'I I I Attorneys DANIEL O. IVIoLEOD, OF CEDAR RAPIDS, IOWA.

FRAMING-TOOL OR PROTRACTOR.

Specification of Letters Patent.

Patented Jan. 21,1913.

Application filed March 30, 1911. Serial No. 617,956.

To all whom it may concern:

Be it known that I, DANIEL C. MoLEon, a citizen of the United States, residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented a new and useful Framing-Tool or Protractor, of which the following is a specification.

This invention relates to framing tools or protractors for use in laying out roofs, stairs, etc, the principal object of the invention being to provide a simple and com pact device of this type which can be readily manipulated and by means of which various angles found necessary in structures of the type mentioned, can be quickly obtained without the necessity of mental calculation.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings, the preferred form of the invention has been shown.

In said drawings :Figure l is a plan view of the framing tool or protractor. Fig. 2 is a section of line AB of Fig. 1.

Referring to the figures by characters of reference 1 designates a plate preferably of metal and in the form of a right angle triangle the hypotenuse of which can be at any desired angle or angles relative to the two sides. Each side of the triangle is graduated to indicate inches and fractions thereof, these graduations being preferably arranged on both faces of the plate and the zero point of the two scales being located at the point of conjunction of the two sides. A slot 2 is arranged close to and parallel with one side of the triangle while another slot 3 is arranged close to and parallel with the other side thereof.

A rule 4 is mounted on each face of the triangle, each rule having alining slots 5 extending longitudinally therein. The two rules are preferably graduated throughout their lengths so as to indicate inches and fractions thereof. A set screw 6 is loosely mounted in each of the slots 5, one of these screws being slidable within the slot 3 while the other one is slidably mounted within the slot 2, each screw 6 having a head 7 at one end, while its other end is adapted to be engaged by a nut 8 by means of which the screw can be tightened for the purpose of securing the rules in any positions to which they may be adjusted relative to the triangle 1.

Straight slots 9 are formed within the triangle 1 and cooperate with the adjacent edges of the triangle for indicating the angles to be laid out for producing an octagon out, each of these slots being preferably designated by the words Octagon cut. Additional slots 10, designated by the words Miter out are formed within the triangle and cooperate with the adjacent edges thereof to indicate the angles to be laid off when it is desired to produce a miter out.

In addition to the slots hereinbefore mentioned, two additional series of slots are formed within the triangle, one series being designated by the numeral 11 while the other series has been indicated at 12. The slots 11 are designated by the words Hip bevel. These slots 11 are further designated by the numbers 3 to 12 inclusive, these designating numerals indicating rise in inches. The slots 12 are designated by the words Jack rafter bev. and the several slots are further designated by numerals ranging from 3 to 12 inclusive and which indicate the rise in inches.

Should it be desired to get the proper cut for hip or valley rafters for half pitch roofs, the rules t are adjusted to the proper graduations on the side edges of the triangle and are then placed against the edge of the rafter. The top and bottom cuts of the rafter can thus be laid off by marking along the graduated edges of the triangle. After the rafter has thus been laid off the cuts on the edges of the rafter can be laid off by using the proper slots indicated by the words Jack rafter bev. rise. For example if the rafter has a twelve inch rise, the triangle is placed on the edge of the rafter with the rules 4 against one side thereof and a line is drawn across the rafter by placing a pencil or other marking device in the slot indicated by 12. The line thus drawn should be extended from the end of the line previously drawn on one side of can be readily obtained by shifting the rules t to other graduations upon the sides of the triangle. Miter and, octagon cats can be laid out by using the slots designated as Octagon out and Miter c'iit respectively.

Should; it be'desir'ed to lay out the face' string for stairs having, tor example a ten inch run and a inches rise, the rulesv le are shifted to the 1Q inehand the 7g} inghes gra dna'tiens upon the respe'etive "side's. 0f the triangle mea as" indicated" i If 1g; 1; rile; m les 4 are then; "plaedf against the edge? of S fi nd n 'd v a n flig aixi; ated edges Q'f' the triangle ti indi ajte Where" the" cutsare td'be' made in'layingont the said string. N

As shdi'i n in Fig; 1,;a' e ssai-ymemlfl may be removed, sb 'asftereduce' the Cost of the" toel and alse lighten the saine".

What is claimed is i 1. 'tdel ineluding' a right "angle" triangle having graduated sides; a rule ad justab'le'npon the triangle to different angles relative t0 said sides to indicate the runs and r1ses er side bevels of rafters, and said tr'iafigle'1iaVing a series of slots coiiperating With the rules to indicate the top and hotujl es"td'indieatthe tep bevels of the rafters at predetermined: rises;

tu r'e in the resent ,of two Witnesses DANIEL c. MOLEOD. Witnesses;

B QNEL E, Lofns' 'NYERE.

001115; of this p atent may be obtained for fiiie centsheach; b of'Patents shin on

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