US291380A - Drafting implement - Google Patents

Description

(No Model.) I

N. MILLOY.

I DRAFTING IMPLEMENT.

Patented Jan. 1

Fig 1 trio.

NEVIN MILLOY, OF CINCINNATI, OHIO.

DRAFTING IMPLEMENT.

SPEGIFICATION forming part of Letters PatentNo. 291,880, dated January 1, 18(4. Application filed May 31, 1883. (N model.)

T0 (ZZZ whom itmay concern:

Be it known that I, NEVIN MILLoY, a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Drafting Implements, of which the following is a specification.

The object of my invention is to provide a cheap and convenient rule for draftsmen, by

the aid of which any desired curve maybe laid off on the drawing. 1

Referring to the drawings forming part of this specification, Figure 1 represents a side materials.

elevation of the rule when not in use. Fig. 2 represents in perspective the rule connected to doublecurve. Fig. 3 represents a transverse section of the rule, showing one of the pins for connecting the same to the drawing-board. Fig. 4 is a view of the top edge of a portion of the rule,. and representing slight modification of my invention, an eye being connected to one side of the rule. Figs. 5 and 6, respectively, represent a section of the rule shown in Fig. i, Fig. 5 showing a fastening-pin of one style, and Fig. 6 showing a fasteningpin of another style, applied in connection with said rule.

A is a rule, made of any thin flexible ma terial, preferably elastic.

The material prefcrably employed is steel or brass. VVhalebone and gutta-percha are also among the available The rule may be made of any clei sired length. Each end of this rule is prefthe point of the pen or pencil.

ing left between the two legs.

erably provided with an eye, a, through which a pm, 0, may be inserted. A number of pins,

B. are employed for retaining the rule on the board at the desired curvature, and these pins are each so constructed that an unbroken line may be made by a pencil or pen against one side of the rule, the pins not interfering with Each of these pins B consists of a pointed leg, I), to be driven into the board, and a shorter leg, I), which, when theleg b is driven into the board, will not extend down to the board. Both of these legs are secured to a single head, d, a space equal to the thickness of the rule A be- The pins 0, which are to be inserted through the eyes a, consist of a single pointed leg having a suitable head. XVhen the rule A is to be connected to the board, one of the pins 0 ispassed through one of the eyes a anddriven into the board, and the rule is then bent around to the 5 5 desired curvature, and the required number of the pins 13 employed, as shown in Fig. 2, (the same being placed at suitable intervals apart,) to retain the rule at the proper curvature, the short leg 0 of each pin resting against the side of the rule against which the pen or pencil is to rest, and as these legs I) do not extend down to the board no obstruction is presented to the point of the pen or pencil, and a continuous unbroken curved line may be thus made. If desired, one side of the rule A may be provided with a number of eyes, e, extending, preferably, only partly across the width of the rule, in which event pins consisting of a single leg, similar to the pins'O, may be used instead of double pins, like the pins 13, one of said pins 0 being inserted in one of said eyes and driven into the board,

as shown in Fig. 6. It may sometimes be desirable to draw the pen or pencil along both 7 5 sides of the rule, in which event a double pin, like that shown in Fig. 5, will be found advantageous. This pin consists of two points or legs, f, connected together by a cross-piece,

f, from which projects a pin, f, which latter pin can be inserted in one of the eyes e,when present, or placed against the concave side of the rule when the eyes are not present. The pin f 2 is shorter than the points f, and therefore does not reach down to the board, and the 8 5 points f being separated, as shown in Fig. 5, the pen or pencil may be drawn along the rule,

at both sides of the lower edges instead of the eyes 0. Suitable offsets may, when desired,

be connected to the rule and serve in lieu go thereof.

The rule is to be varied in width and thickness, as well as in length, to suit the size of the curves to be. made and the character of the work to be performed. a

This rule will be found very convenient for railroad'platting, and is very much cheaper than the system of curved rules heretofore employed for this purpose. It is not alone applicable to railroad-plattin but is equally ap- 10o plicable to any other description of platting or drawing in which curved lines are to be made.

Having thus described my invention, what I 2 aemso claim as new, and desire to secure by Letters Patent, is as follows:

1. A drafting-rule consisting of a flexible elastic strip, in combination with a series of pins for retaining said rule in contact with the drawing, and at any desired curvature, said pins being so constructed as to leave the bottom portion of one side of the rule unobstructed, substantially as and for the purposes described.

2. A ruler, A, consisting of a strip of flexible elastic material, in combination with a series of pins, B, consisting of two legs or branches, b b, the leg 1) adapted to be driven into the drawing, the leg I) being shorter than the leg b,and adapted to engage with the face of the ruler at its upper portion only when the ruler is in position on the drawing, substantially as and for the purposes described. 3. The ruler A, consisting of a strip of flexible elastic material, and provided with the eyes a, in combination with the pins 0 and a series of pins located between said eyes a, and constructed so as to leave the bottom portion of one side of the rule unobstructed, substantially as and for the purposes described.

4. The ruler consisting of a strip of flexible elastic material, and provided with the eyes a, in combination with the pins 0 and a series of pins, B, substantially as and for the purposes described.

5. The combination, substantially as hereinbefore set forth, of the elastic flexible strip A, provided with eyes rigidly attached to said strip, and fastening-pins adapted to penetrate the substance upon which the drawingis to be made, and hold said strip in position.

NEVIN MILLOY.

W'itnesses:

J. WM. STREHLI, A. B. KURTZ.

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