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Publication numberUS270681 A
Publication typeGrant
Publication dateJan 16, 1883
Filing dateFeb 1, 1882
Publication numberUS 270681 A, US 270681A, US-A-270681, US270681 A, US270681A
InventorsWilliam H. H. Knight
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
William h
US 270681 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(N Model.)



No. 270,681. Patented Ja,11.16,""l883 N, Punks. Pmwumugmpmr, washing n. s;




SPECIFICATION forming part of Letters Patent No. 270,681, elated January 16, 1883.

Application tiled February 1, 1882. (No model.)

Iocll lwhom it may concern Be itknown that I, WILLIAM H. H. KNIGHT, a citizen of the United States, residing at 'ashiugton, in the District ot' Columbia, have invented a new useful Improvement in Lead orCr-ayon Holders, of which the following is a specication.

In the drawings, Figure 1 is a longitudinal section ofa pencil or crayon holder embodying my invention. Fig. 2 is a detail perspective view ot one of the springs for operating the clamping-jaws. Fig. 3 is a detail perspective view ofthe lower end ot' aplnnger. Fig. 4 is a sectional view wherein but one clampingspring is employed.

My invention has for its object the'provision of a pencil or crayon holder wherein the lead or crayon is firmly held in position within the sheath by springs, which springs also operate to return the plunger to its normal position after the end ot' the lead or crayon has been propelled forward or outward through the tip or nozzle ot' said sheath.

To the accomplishment of `this purpose it consists in a pencil-case having an interior hollowed plunger, preferably.cylindrical in form,

said plunger provided at its lower end with a collar or ferrule, which engages with the upper ends of leaf-springs, the lower ends of which springs are attached to the inside of the nozzleor tip of the sheath, and which springs are also provided at or about their Iniddle and at the inner sides thereof' with clampingjaws that grasp the lead or crayon, all arranged and operating substantially as hereinafter described and claimed.

,Referring to the accompanying drawings, in which similar letters of reference denote like parts on each gure, A represents the sheath, provided at its lowerend with the nozzle or tip B.

U represents a plunger having an interior hollow, as shown at c', for the reception of the lead or crayon D. v l

E represents a collar or ferrule at the lower end of the plunger C, said ferrule being provided at its oppositersides with apertures e, that receive lugs f, made or formed upon the upper ends of leaf-springs F.

f represents shoulders upon the upper ends ot said springs F, upon which shoulders the lower edge ot' tllevferrule E normally rests.

f2 represents clamping-jaws attached to the inner surface of the springs F at or near the lniddle thereof. Ihe lower ends ofsaid springs are attached in any suitable manner to the upper end of' the tip or nozzle B, within said nozzle, as shown in Fig. 1.

1n Fig. et I have shown 'a device wherein but one spring, F, is used, in which construction A represents an immovable or Xed jaw or block, attached to the inner side of the sheath and opposite to the movable clamping-jaw f2, attached to the spring. In this view the ferrule is dispensed with, the upper end of the spring being inserted in a suitable recess in the lower endet' the plunger, and retained therein in any suitable manner.

The arrows in Figs. l and 2 indicate the direction in which the springs willbend when force is applied tothe cap G, which is attached by a screw or rivet, c, to the head of the plunger C. f

It will be understood that when downward pressure is applied to the plunger such pressure will cause the springs Fto move outward, as indicated in the arrows, Fig. l, and thus release the lead or crayon from .the grip ofthe clam ping-jaws, permitting said lead or crayon to move longitudinally within the hollow c', and when said pressure is' withdrawn from the plunger the force of the springs F will operate to return said plunger to its normal condition, while at the same time the lead or crayon will be grasped by the clamping-jawsf2.

It will be readily seen that the pressure upon the springs Fis longitudinal and not lateral, as has been heretofore practiced when leafsprings have been applied to lead or crayon holders, such longitudinal pressure resulting in a twofold action, as hereinbefore described, thus utilizing the full force of said springs, causing themto operate not only as gripping but also as retracting springs.

It will also be readily understood that, the plungers being continuous from end to end, the manufacture of this device is simplilied over all others of the class to which my device is allied, and rendered more durable and effective.

Having now fully described my invention, what I claim isl. In a lead or crayon holder, the combination ofthe leaf-gripping and retractin g sprin gs F with thc hollow plunger() and tip or nozzle B, substantially as described.

2. In a lead or crayon holder, the combination of the sheath A, having tip or nozzle B, with the hollow plunger C, provided at its lower end with ferrule or collar E, havin g' aper tures e,springs F, havinglugs f and shoulders f', adapted to engage with said ferrule, and clamping-jaws f 2, substantially as described. 15

3. In a lead or crayon holder, the springs F,

provided at their upper ends with lugs f and shoulders f and at or near their middle 'and on their inner sides with clamping-jawsf2,

adapted to release and hold a lead or crayon zo when force is applied to the upper ends of said springs, substantially as described.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2464484 *Feb 9, 1945Mar 15, 1949Irving BlechmanAdjustable joint for garment stretchers
US4627420 *Oct 31, 1983Dec 9, 1986Katz Harry RNeedle inserting instrument for interstitial radiotherapy
Cooperative ClassificationB43K21/22