US1078879A - Flexible templet. - Google Patents

Description

T. A. ROY & J. H. HINDLEY. FLEXIBLE TEMPLET. APPLICATION FILED NOV. 4, 1912.

1,078,879. Patented Nov. 18,1913.

ATTORNEY ins12171511) STAWENT FIO E1.

THOMAS A. BOY, 0F DORGHESTER, AND J OI-IN H. HINDLEY, 0F MALDENfMASSACHU- SETTS, ASSIGNORS 0F QNE-T'HIRD TO JAMES PRICE, OF MALDEN, MASSACHUSETTS. L

FLEXIBLE TEMPLET.

Specification of Letters Patent.

Patented Nov. 18, 1913.

Application filed November 4, 1912. Serial No. 729,493.

To all whom it may concern:

Be it known that we, THOMAS A. ROY, a citizen of the Dominion of Canada, residing at Dorchester, in the county of Suffolk and State of Massachusetts, and JOHN H. HIND- LEY, residing at Malden, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Flexible Templets, of which the following is a specification.

Our invention relates to the tools used by wood workers, iron workers and draftsmen for laying out and duplicating various simple and compound curves.

Our objects are: First, to provide a tool or instrument capable of being set to any desired or existing curve, whether composed of portions of .thearc of a circle or any othei' geometrical curve. Second, provlde means of fixing the curve so formed rigidly and positively. Third, to provide adjustable means for accurately locating said curvev with reference to any straight line contiguous to it, or forming a part in connection with it, in a manner similar to the use of the wood workers square. or his bevel. We attain these objects by the mechanism illustrated in the accompanying drawing, in which:

Figure 1 is a lan view of our flexible templet, arranged as a square; Fig. 2 is a similar view of a portion of the tool arranged as a bevel; Fig. 3 is an edge view showing the square attachment; and Fig. 4 is an edge view showing the connection of the flexible bar, and rigid bar by means of the'adjustable connecting bars.

Similar-letters refer to similar parts in the several views.

The construction of our device lows:

A is a flexible bar of metal, preferably steel, to which is riveted a number, (in this case ten) of right angle pieces a a. Riveted loosely or pivoted to these are the slotted adj usting bars B B. The bar C is rigid, preferis as folably of steel, and has tapped into it theithumb bars B B are the ordinates. The rigid bar C is slightly checked, or formed in fine 'rid 'es at right angles .to each other as shown in igs. 1 and 2, for the purpose of afi'ording a firmer grip to the adjusting bars B B 7 barC. Itis obvious, however, that the bars B B being pivoted, practicall at both ends, may be placed in. any angu ar position to the rigid bar 0. This would place the right angle piece D in the same angular position and thus form a bevel instead of a square. A right angle piece similar to D may be used on the opposite end of the device by makingthe pivot hole for the thumb screw 0 in the opposite end..

Fig. 2 shows the right angle piece D detached from the right angle piece a and placed under the rigid bar C, where it is secured by the thumb screw 0 and adjusted to form a bevel while the adjusting bars B B remain at substantially right angles to the rigid bar C. I

In using our device, say for fitting wood or metal parts to existing curved portions, all the thumb screws 0 0 'on the rigid bar C are loosened, the rigid bar placed in the desired position, and the adjusting bars B B pushed out, one at a time, forcing the flexible bar-- A against the existing curved surface, and fastenin them by -the thumb screws 6 c. To render the curve accurate it may be necessary to go through this operation more than once, but it is obvious that a very accurate curve may be thus formed, and that when so formed may be rigidly maintained. For instance; in fitting flooring incurved corners or around the base of a column, or in similar places, not only can an accurate counterpart of the existing curve be made, but by the use of the right angle piece D, set against the edge of the portion of floor already laid, and then applied in the same manner to the portion for the use of draftsmen, but the are not of' suflicient rigidity, when adjuste to be useful' to woodworkers or iron Workers. There is no provision made for a square or bevel attachment whereby the curve to be made may be fornied with reference to any straight edge or surface connected with it or related to it.

Our device fulfils these conditions and is in actual, practical, and successful use for these purposes.

We therefore claim: In a flexible templet, the combination 01 a flexible bar, a rigid bar, a multiplicity of adjusting bars pivoted to said flexible bar and slidabiy attachable to said rigid bar,

and a right angle bar adjustably connected to said rigid bar to form therewith a square or a bevelv substantially as described.

THOMAS A. BOY. JOHN H. HINDLEY.

Witnesses:

\ OSCAR E. PERRIGO,

MARY E. MGPHERSON.

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