US298364A - Le eoy w - Google Patents

Description

(No Model.)

LE ROY W. PAIRGHILD.

CASE FOR PENOILS.

M, ,364. Patented May 13, 1884'.

WITNESSES:

N. PETERS. Pholoulhagdphur. Washinghm 0. c4

UNr'rn Sra'rns A'IENT rrron.

LE ROY XV. FAIRGHILD, OF NEW YORK, N. Y.

CASE FOR PENCIITS.

SPECIFICATION forming part of Letters Patent No. 298,364, dated May 13, 1884.

Application filed February 28, 1884. (No model.)

To all whom it may concern.-

Be it known that I, Ln Roy W. FAIROHILD, of New York, in the county of New York and State of New York, have invented certain Improvements in Cases for Pencils and Similar Implements, of which the following is a specification.

My invention relates to improvements in that class of cases known as the magic movement, and theinvention consists in combining with said magic movement a spring, a catch, and a releasing device, as hereinafter more fully explained, whereby the pencil or implement carrying point will be automatically pro- 1 jected when released, and can be held within the case when not wanted for use.

Figures 1 and 2 are perspective views of portions shown detached. Fig. 3 is a longitudinal section, showing the point projected; and Fig. 4 is a similar view, showing the parts closed and locked in position.

The so-called magic movement for pencils consists of two tubes working one within the other, each having a spiral slot, but running in opposite directions, thereby combining the operation or effect of both simulta neously in projecting the lead-carrying point. There are various ways of constructing these movements, so far as the details are concerned, the principle of operation being the same in all, and as their construction is well understood by those skilled in the art, and as my improvement is equally applicable to all the various styles of magic movements, it is not necessary to further describe their construction in detail.

In the drawings, A represents a tube having a straight slot for the pin of the lead-carrying tube, and 13 indicates one of the spirallyslotted tubes of the magic movement, of a proper size to fit on the tube A, as shown in Figs. 3 and 4. The tube B carries a pin, Z, which works in the reverse spiral slot of the other tube,-O, of said movement.

As shown in Fig. 1, the tube A has at its upper end a collar or enlargement, b, which is ribbed longitudinally, and the inner side of the outer tube, 0, is grooved longitudinally, as shown in Fig. 3, so that when the tube A is shoved up or down in tube 0 it is prevented from turning therein, and is made to move in a right line, thus overcoming the tendency of the pin Z, which works in the spiral slot of tube 0, to cause the tube A to turn in said tube as it is moved in or out. I

WVithin the tube 0, I secure a collar, cl, near its upper end, as shown in Figs. 3 and 4, this collar having a conical hole at its center, as shown, the purpose of which will be hereinafter explained. Instead of this collar (1, any form of shoulder or projections which will operate to produce the same results maybe substituted for it. Between this collard and the inner end of tube A, within the tube 0, I place a spiral spring, D, as shown in Fig. 3, and to the inner end of tube A, I secure a spring-hook, c, the projecting end of which is beveled or inclined, as shown in Figs. '1, 3, and 4. If, now, the pencil has its point placed on a desk or against any stationary object and pressure be applied, the tubes A and B will be shoved up into the tube 0, compressing the spring D and thrusting the hook 0 up through the hole in collar (2, when the hook will spring laterally and engage upon the upper face or side of the collar, as shown in Fig. 4, thereby locking the parts in position, with the pencil closed. In order to disengage this hook c, and thus release the pencil when wanted for use, I provide a sliding head-piece, E, and secure it within the upper end of tube 0, as shown in Figs. 3 and 4. Its body within the tube 0 is reduced in diameter, so as to permit it to slide freely in a collar, m, which is secured within the tube 0, a short distance above the collar (1, as shown in Figs. 3 and 4, the lower end of said head-piece E being made conical internally, as shown.

Between the collar m and the shoulder of the head-piece E, within the tube 0, I place another spiral spring, h, as shown in Figs. 3 and 4, this spring tending to keep the piece E projected as far as the collar m, which surrounds its enlarged or conical mouth, as shown in Fig. 3, will permit it to go. Supposing the pencil to be closed and locked fast by the hook c, as represented in Fig. 4, it will only be necessary to press upon the head E sufficiently to compress the spring h, w en e conical mouth of the part E coming down, so as to bear on the inclined end of, the hook a, will at once shove it sidewise, thereby releasing its hold on the collar d, and leaving the spring D free to expand, which will instantly project the tube A, and

thereby the pencil-point p, as represented in Fig. 3. The spring h may be omitted; but I prefer to use it, as it renders the device more complete. It will of course be understood that an outer shell or tube will be fitted over these parts, as is usual in the construction of these cases, and that it will be made of metal, hard rubber, or any suitable material, and be rendered ornamental by any of the well-known means. 'Ihisouter case has been purposely omitted in the drawings, in order to more clearly represent the working parts and prevent confusion. As these magic movements have been constructed heretofore, both hands were required to extend or contract the same one hand to hold the case and the other to opcrate the movement; but it will at once be seen that by my improvement one hand only is required to produce these results. Supposing it to be open, as represented in Fig. 3, it

is only necessary to hold the case with one hand, place the point against any object and press on it, when the case will be closed and automatically locked. To open it while held in one hand, it is only necessary to press the head E against an object, or press on it with one of the fingers of the hand in which it is held, and it will be instantly unlocked and the pencil automatically projected.

hook, or any implement of a size that can be fitted to slide freely in the case.

Having thus fully described my invention, what I claim is-.

1. In an extension case provided with a magic movement, the combination of the magic movement, the propellin g-sprin g D, the springcatch a, and collar d, said parts being constructed and arranged to operate substantially as shown and described.

2. In combination with the tube 0, provided with the collar (1, the sliding tube A, provided with the spring-catch 0, spring D, and the sliding head E, all arranged to operate substantially as and for the purpose set forth.

3. In an extension-case, the combination of.

the spring-hook c, the collar (1, or an equivalent shoulder for the hook to engage with, and a releasing device arranged to come in contact with the hook 0 and release it from its hold upon the locking-shoulder, substantially as herein set forth.

LE BOY \V. FAIRGHILD.

\Vitnesses:

VICTOR W. BRUNDAGE, FRED. A. HAPPY.

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