US276128A - Automatic crayon-holder - Google Patents

Description

(No Model.)

C. ANDREW.

`AUTOMATIG CRAYON HOLDER.

Patented Apr. 17,1883.

. IXIIIIIIII PATENT Orrrce.

CHARLES ANDREW, OF CINCINNATI, OHIO.

AUTOMATIC CRAYON-HOLDER.

SPECIFICATION forming' part 0f Letters Patent No. 276,128, dated April 17, 1883,

Application filed June 19, 1882. (No model.)

To all whom 15mm/concern.-

Be it known that I, CHARLES ANDREW, a citizen of the United States, residing at Oincinnati, Ohio, have invented new and useful Improvements in Crayon-Holders, of' which the following is a specification.

My invention relates to that class of pencils or crayon-holders in which the clamping-jaws are actuated to close upon and. retain the lead or crayon by the movement ofthe crayon-holding tube within a sheath, and are allowed to spring apart and release the crayon by a contrary movement. i

As ordinarily constructed and used, one form or style of such crayon -holder consists essentially of a hollow containing case, usually of wood, forming the body of the pencil, within which a tube containing the crayon has a longitudinal movement. The crayon-tube is split at the end to form two jaws, which are somewhat expanded near their extremities to form a taper, which is suddenly contracted at the ends to form a holding or clamping edge when compressed against the crayon. The contraction or forcing together 0f the taper jaws is effected by withdrawing the crayontube within its sheath, the containing-case acting upon the taper expansion of thejaws as a ca m. The outward movementis effected by pressure of the linger against the projecting end ofthe crayon-tube, which is provided with a suitable cap and a spiral spring to return it to its proper normal position. The principal objection to the pencil thus constructed is that when thejaws are open to allow the crayon to move forward there is nothing to prevent the crayon from passing entirely out of its containing-tube except the pencil be held near the table or some other object and the eXit of the crayon prevented. rIhis objection is more serious than might at first appear, and my invention is directed to its removal, to which end it consists in combining with the longitudinallymovable crayon-tube means for limiting its travel, and thereby regulating the degree of opening ofthe clamping-jaws, so as to'permit only the conical point of the pencil to protrude, and in the construction and arrangement of the particular means, hereinafter set forth, for this purpose.

accompanying and illustrating this specification,in which- Figures l and2 are sectional views, showing the pencil with the crayon-tube in its ultimate positions, respectively-that is to say, with its terminal clamping-jaws retracted in one case and protruded in the other. larged sectional view, showing the relations of the sheath, clamping-jaws, and crayon when in position for use. Fig. Aexhibits a modified construction of the crayon-holder.

In the drawings, A designates the body or containing-case of the pencil; B, its terminal sheath; and C thcorayon-tube, terminatingin the clamping-jaws c c; D, a cap secured to the end ofthe crayon-tube and inclosing the spiral springs. These parts are constructed and operate in the usual manner, and require no further description. My improvements consist in adding thereto and combining therewith means for limiting and regulating the forward thrust ofthe crayon-tube, so as to permit the jaws c c to separate when in ordinary use only far enough to allow the point of the pencil to protrude. The preferable device for this purpose consists in the following construction I provide at the end of the body or containingcase A a i'errule, b, arranged to fit snugly within the terminal sheath B, and form for it a sliding bearing-surface, on which the sheath B may move forward a short distance, or as far' as may be necessary. The movement is regulated by means of a small stud or protrusion, 1,0m theinner periphery of the sheath B, moving in a slot, e, of regulated length in the ferrule b.

It will be readily understood that the sheath B can move forward only so far as allowed by the slot e, and by this movement of the sheath the protrusion of the clamping-jaws through the same is relatively lessened, hence limiting the expansion of the latter. The movement of the shea-th B forward is effected by the outward pressure and consequent friction of the clamping-jaws, which, as the crayon tube is driven forward, carry forward the sheath B to the regulated limit of its travel. The end of the crayon a having been previously sharpened to a conical point, the same is permitted to project beyond the jaws, as clearly exhibllly invention is embodied in the drawings ited in Fig. 3. Whenever it is desired to pro- Fig. 3 is an en- ICO trude the crayon-tube C to the full limit ofits travel the sheath B may be held stationary and the tube forced through, as usual, when the crayon may be removed or replaced in the ordinary manner.

The modified means of limiting the movement of the crayon-tube C and itsjawsce with respect to the sheath B (shown in Fig. 4) consists in providing a slot,f, in the cap D of the necessary length, and a pin or stud, g, in the containing-case A. The stud g, acting as a stop in connection with the slotf, limits the protrusion of the jaws c through the sheath B and operates, as before described, upon the crayon. By making a lateral odset and further extension ofthe slotf, as shown atf, the cap may be rotated to bring the pin or stud g opposite to the extension f, and the crayontube then may be forced to the utmost limit of its travel, so as to open the jaws for the removal or replacing of the crayon.

Having described my invention, I claim and desire to secure by Letters Patent 1. The combination, With an automatic crayon-holdcr such as described, of means, substantially as described, for limiting. the protrusion of the crayon-tube and regulating the dilation of the clamping-jaws so as to prevent the entire withdrawal ofthe crayon, substantially as set forth.

2. The combinatiolnwith an automatic crayon-holder such as described, of means, substantially such as described, for automatically limiting the protrusion of the crayon, but permitting the entire dilation of' the clampingjaws when required to remove or replace the crayon, substantially as set forth.

3. In combination with the containing-case A, crayon-tube C, terminating iu Vtaper jaws c c, and sheath B, provided with stud d, the ferrule b, provided with slot e, arranged and operating substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

. CHAS. ANDREW.

Witnesses L. M. HosEA, W. HOFFMAN.

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