US577472A

US577472A - white

Info

Publication number: US577472A
Authority: US
Publication date: 1897-02-23
Anticipated expiration: 1914-02-23

Description

(No Model.)

I J. H. WHITE. APPARATUS FOR DRAWING CURVES.

No. 577.472. Patented Feb. 23, 1897; A

WITNESSES:

NITE STATES JOSEPH H. IVHITE, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 577,472, dated February 23, 1897.

Application filed January 31, 1896- Serial No. 577.542- O model.)

To all whom it may concern:

Be it known that I, JOSEPH H. IVHITE, of the city of New York, in .the county and State of New York, have invented a new and useful Apparatus for Drawing Curves, particularly for use by dressmakers and tailors, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to provide a simple and efficient apparatus for drawing curves, which can be used, in particular, by dressmakers and tailors in drafting patterns for garments.

The invention will first be described in detail, and then set forth in the claims.

In the accompanying drawings, Figure 1 is a View in perspective of a curve-drawing device embodying my invention. Fig. 2 is a vertical section taken through Fig. 1 at the line 2 2. Fig. 3 shows in perspeotiveamodification of my invention.

In said figures the several parts are respectively indicated by reference-numbers, as follows: The number 1 indicates a drafting board or table, upon which is placed the sheet of drawin g-paper 2. Located within a recess formed in the board 1 is a plate 3, preferably square in form, which may, if desired, be secured in place by screws 4, as shown in Fig. 1, the top of said plate being flush with the top surface of the drafting-board. Mounted upon the plate 3 is a plate 5, preferably round in form, which is adapted to freely revolve upon the plate 3 by means of any suitable pivot, such as 6. A flexible tapeaneasure 7 passes over the upper surface of the rotary plate or member 5, andis wound upon a reel or roller 8, mounted in arms or brackets 9, secured to the plate 5. The reel 8 may, however, be omitted, if desired. The outer end of the tape 7 is provided with a spring-clamp 10, adapted to receive a pencil 11 and hold it in a vertical positon. Secured to the rotary plate 5 is a guide 12, through which passes vertically a set-screw 13, carrying on its lower end a plate 14, adapted to clamp the tape 7 in any desired position.

The operation of the device will be readily understood fromthe above description of its construction.

Heretofore in drafting patterns for gar- -plate or member 3.

ments d ressmakers and tailors have drawn the necessary curves, such, for example, as the neck-curve and side body curve, by holding the tape to the table at the desired point in its length with the hand, so as to permit the outer end to swing as if on a pivot, the outer end and a pencil being held in the other hand and moved so as to draw the required curve. In my device only one hand need be used to draw the curve. Thusif it be desired to draw from one point to another a curve such as shown and to hold the tape 7 at the five-andone-half-inch point the set-screw 13 is turned so as to cause the plate or clamp 14 to descend and clamp the tape 7 to therevolving member 5, as shown in Figs. 1 and 2. The outer end of the tape 7 can then be held with one hand and swung from side to side, so as to cause the pencil 11 to draw the desired curve upon the paper 2, the rotary plate 5 rotating on its pivot on top of the stationary It will thus be seen that by clamping the tape 7 at the desired point in its length and properly adjusting the sheet of drafting-paper 2 in relation to the curvedrawing device many different curves can be drawn upon the paper 2.

I do not confine myself to the precise construction shown, as it is obvious that such construction may be varied without departing from my invention. Instead of embedding the stationary plate 3 in the table 1, the whole device may be made as shown in Fig. 3, so as to rest upon the top of the table and be capable of being moved to different positions thereon, thus avoiding the necessity of adjusting the paper 2. The device should, however, be made sufficiently heavy to prevent it from being accidentally moved out of its proper position by the tension put upon the tape 7 in drawing the curve. The form of' clamp used for clamping the tape is also immaterial. In the construction shown in Fig. 3 a simple spring-clamp 15, secured to the revolving member 5, is substituted for the clamping device shown in Figs. 1 and 2, but whatever form of clamp is used it should be sufficiently strong to prevent slippage of the tape during the drawing of the curve.

Having thus fully described myinvention, I claim- 1. A device for drawing curves, consisting of a stationary member; a rotary member mounted upon the stationary member; a graduated measuring-tape; and a clamp for clamping said tape upon said rotary member.

2. A device for drawing curves, consisting of a drafting board or table; a stationary member embedded in said table; a rotary member mounted upon the stationary member; a graduated measuring-tape; and a clamp for clamping said tape upon said rotary member.

3. A device for drawing curves, consisting of a stationary member; a rotary member; a measuring-tape; a reel or roller for said tape, secured to the rotary member; and a clamp for elampin g said tape to said rotary member.

4. A device for drawing curves, consisting of a stationary member; a rotary member; a

graduated measuring-tape; and a setscrew located above the rotary member for clamping said tape to said rotary member.

5. A device for drawing curves, consisting of a stationary member; arotary member; a measuring-tape; a reel or roller for said tape, secured to said rotary member; and a setscrew for clamping said tape to said rotary member.

6. In a device for drawing curves, the combination of a stationary member; a rotary member; a flexible measuring-tape provided on its end with a pencil-holder; and a clamp for clamping said tape upon said rotary member.

7. In a device for drawing curves, the combination of a stationary member, as 3; a rotary member, as 5; a tape as 7, having a pencil-holder, as 10; a reel as 8; a guide as 12; and a set-screw clamp, as 13, 14; for the purposes set forth.

Lrosnrn 11. WHITE.

Witnesses: HENRY FROMME,

JAMES BURKE.