Measuring-tool.

Application filed April 20,1905. Serial No. 256,525.

Be it known that I, Oscar Osmonsox, a citizen of the United States, residing at Grand Forks, in the county of Grand Forks and State of North Dakota, have invented a new and useful Measuring-Tool, of which the following is a specification.

This invention relates to an improved measuring-tool designed especially for the use of carpenters in the framing of rafters and other timbers in the construction of buildings, bridges, and the like; a„„ ... ...invention is to enable such timbers to be easily, ends by spacing- blocks 3. The said bottom and top members 1 and 2, which consist of relative long narrow strips of suitable dimensions, may be made of wood, metal, or any ; other suitable material, the top members 2 being provided with longitudinal slots 4, extending almost through the entire lengths thereof. The inner ends of the members A and B are interlapped, as wjll be clearly seen

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3° in Fig. 1, and are beveled so as to present ueiauii ui uiu.uiugo, acute angles, as at 5, said members being pivand the object of the otally connected, as by a pin 6, extending .... vx.v.-..____________________ , through the members 1 1 and 2 2 near theexconvcnienti.v, and accurately framed without ' tremities thereof. By this construction the ’ ’ ' ' members A and B may be folded together at a very acute angle, and the range of efficiency

The member U consists of a straight-edge of wood or metal having therein a longitudinal slot 7, said straight-edge being laid out with any suitable measuring-scale, as at 8. The members A and B are likewise provided with suitable scales, as 9 and 10, upon the upper or side faces thereof, or both.

In practice the member C is adjusted in the spaces between the bottom and top members of the members A and B and is secured at any desired adjustment by means of bindingscrews 11, extending through the slot 7 in the member (J and through the slot 4 in the members A and B, said screws being provided \vith

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5° resorting to tedious calculations, the construction of the improved tool being such as to enable the hypotenuse of any 1 „ triangle to be immediately ascertained without calculation.

The invention consists, with these ends in vie w, in tlie improved construction of a measuring-tool and in the novel arrangement and combination of parts constituting the same, which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of embodiment of the improved measuring-tool, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that the right is reserved to any changes, alterations, and modifications to which recourse may be had within the scope of the invention and without departing from the spirit or sacrificing the efficiency of the same.

In said drawings, Figure 1 is a perspective view of the improved measuring-tool complete. Fig. 2 is a side elevation showing the same folded together. Fig. 3 is a perspective detail view of the angle-block employed in connection with the tool for the purpose of adjusting two of its members at right angles to one another. Figs. land 5 are sectional detail views taken, respectively, on the lines 4 4 and 5 5 in Fig. 1.

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

The improved tool is composed, essentially, of three members, (designated, respectively,

J SUCH US IO <1 VlT,y UUUl.Ddit^iv,aiiuuuv iiuigv right-angled of the implement is thereby greatly increased.

8o thumb-nuts 12. The binding-screws 11 being freely slidable in the respective slots when the nuts 12 are loosened, it is obvious that the three members A, B, and C may be adjusted with relation to each other to present the sides of any desired triangle and that they maybe secured with relation to each other by simply tightening the nuts. The.measuringscales upon the faces of the respective memberswill instantly indicate the relative lengths of the sides of such triangle, thus enabling all kinds of framing to be done without computation.

For the purpose of enabling the implement to be accurately adjusted with two of its members at right angles to one another a block 13 is provided, said block having two sides 14 15 at right angles to each other and provided at one of said sides with an L-shaped flange 16, adapted to engage the slot 7 in the member C, upon which it may be clamped securely When the block

A and B are each composed ] by means of a set-screw li.

2, 13 has been thus secured upon the member C, spaced it is only necessary to place one of the niemThe members A of a bottom member 1 and a top member 2. said bottom and top members beingj^ apart at what may be termed their “outer” bers A B in engagement with the side of said

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798,696 block which is at right angles to the side in engagement with the member C and to there secure such member by means of its bindingscrew 12, as will be seen in Fig. 1 of the 5 drawings.

The uses and advantages of this implement will be readily understood by those skilled in the art to which it appertains. Thus, for instance, when the members A and C have been το adjusted at right angles to each other the hypotenuse of any desired right-angled triangle may be instantly determined by adjusting the member B to the desired angle.

The construction of the improved imple15 ment is simple and inexpensive, and it will be found thoroughly efficient for the purposes indicated.