US1437897A - Pencil - Google Patents

Description

J. L. KLEINMAN.

" PENCIL.

APPLICATION FILED JAN. 29,1921- Patented Dec. 5, 1922- amomtoz alias Dad a, lean Pmi'CILL.

Application filed January 291, 1921. Serial No. 4.403%? i To all whom it may concern:

Be it known that I, JACOBLJKLEINMAN, a citizen of the United States, and resident of the city of New York, in the county of New York and State of New York, have invented a certain new and useful Pencil, of which the following is a specification.

This invention relates to pencils, and particularly to a type provided with a lead magazine and mechanism for automatically receivin the lead directly "from the magazine and fee ing it forwardly as it wears away during use.

The principal object of my invention is to provide a simplified, inexpensive, conveniently and economically manntacturable, conveniently utilizahle, eiliciently operating, strong, durable, and improved pencil of this t e.

Another object is to provide a pencil of this type, wherein the lead may he at all times propelled inwardly, as well as fed forwardly, by the manipulation of the media nlsm.

Other objects and advantages will hereinafter appear. 4

In the accompanying drawings,

Fig. l is a general sectional elevation of the pencil.

fits the lead, in the upper part of the holder l is located a magazine 4, normally loaded with supply leads 5, which magazine comprises a tubular-shell that fits against the in- Lterior side of the holder 1, wherein it is rotatably mounted by means of an indentation '6-in the holder fitting into a similar annular indentation 7 in the shell 4. The bottom 8 of so the magazine l is thickened and is provided with a central opening 9, toward which the floor ll) of the magazine tapers downwardly Figs. 2'and 3 are respectively aplan and. elevation of a detail of the pencil mechanism.

and its exterior side 11 tapers. upwardly. Said magazine-shell projects aboye the upper extremity 12 of the holder, and a rubber plug 13 threads into the upper end of the shell 4, to ellectively bottle up the leads 5 and to serve the purpose of an eraser during writing. A cap 14 slips over the projecting end 15 of the magazine shell 4, and it emto braces the end 15 sdiiiciently firmly so that when the cap is rotated the magazine is carried around therewith and rotates within the holder 1. Y

To the bottom 8 of the ma azine are secured two guide-rods 16, 1'3 52% at are parallel to each other and project therefrom toward the writing end of the holder. Said rods pass through respective guide openings l8, 19 of a carriage 26 Figs. 1, 2, 3; that is pro- 7e vided with a threaded periphery which is in engagement with the tapped interior side 21 of the holder 1, whereby as the magazine .4

is rotated, by means of turning the cap 14,

said guide rods are carried around therewith and thecarriage 20 is in turn rotated and caused to thread forwardly'and backwardly, according to the direction of rotation of the cap 14, in which manner the carriage maybe thus advanced toward the writing end of the so pencil and retracted therefrom. The carriage 20 is provided with a central opening 22, adapted to let the, lead pass therethrough, and a transverse notch 23, wherein thereare located a pair of springs 24, 25 that are wound around the rod 16, with their extremi-v ties 26 hearing against the upright interior side 27 0f said notch and their ends 28 normally pressing against the rods 17 in such manner that their arms 29 are inthe path of the axis of the carriage opening 22'. When the carriage 20 is fully retracted to a position adjacent the magazine-bottom 8, a cam 30 formed upon the rod 17 bears against the springs 24, 25 and thereby forces their arms 29 away from the path of the opening 22, and when the carriage is advanced to the end of the holder 1, a cam 31 bears against the arm 29 and causes it to be held away from the path of the opening 22. When the carriage 2O clears the cams 30, 31 the springs 24, 25 fall back to their above mentioned normal position. I a

When it is-desired to use the pencil, the

cap 14 may be slipped ed and the rubber 13 unthreaded, and the magazine 4 may be then loaded with the leads 5 and said rubber and cap restored in place. lhe carriage 20 may be then retracted fully by turning of the through the carriage opening 22 until its sharp end 5* will strike the Writing terminal 3, which will arrest its fall, due to'the bore of the terminal being very slightly smaller than the diameter of the lead. The.

carriage may be then advanced, and the springs 24, caused to clear the cam and to fall back in their released state, whereupon the spring 25 will press the end of the lead 5*, against the notch-side 27 as shown in Fig. 5, and thereby secure the lead to the carriage, and the spring 24 will fall to the rear of this lead-terminal, as shown in Fig. 4, so that as the carriage is advanced furtherit will grip the lead and feed it forwardly through the writing terminal 3 to thereat provide the pencil writingspoint. And as the pencil point wears away during the use the lead may be fed forwardly or drawn back for adjustment of the point by advancing and retracting of the carriage, by means of merely turning the cap 14 in opposite directions. In the manipulation of the pencil. the spring 25 holds the lead in place and the spring 24 insures against any accidental longitudinal displacement of the lead during the writing. The elongated extremity 3 of the holder, the bore of which fits the lead serves to prevent any possible accidental breakage of the lead laterall at any pointbetween the extremity 3"an the carriage 20. When the carriage is advanced to the extreme end of its stroke, adjacent the end 2 of the holder, the cam 31 presses the sprin 25 away from the lead 5 and-thereby re cases it, so that the butt end'of the lead ma be then withdrawn with thefingers an removed from the pencil. f-Preferably the lead is manufactured with a rear end 5 of reduced diameter whereby as it wears down to the butt end the same will automatically fall through the writing end 3 of the holder, without requiring any pulling action thereon.

As the lead is thus used up another one of the leads, as the one shown at 5, makes its way through the opening 9 in the magazine floor and passes on toward the. carriage 21. And in order to feed this'lead on through the writing end of the pencil,-it merely requires to retract the carriage 20'to the limit ofits return stroke and to,advance it forwardly whereupon the new lead is gripped by ner described previously.

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the carriage and fed forwardly in the man While the carriage is being retracted, preliminarily to securing the new lead thereto, the new lead is prevented from passing through the opening 22 by the abutment of its forward 'point against the spring 24. The slopes 32, 33 of v the magazine 4 and carriage 20 serve to facilitate the direction of the leads into the openings 9, 22 and the slope 11 serves to return any lead back into the magazine that may accidentally fall back from the carriage 20 upon inverting of the during the taking up of a new lead.

It will be evident that by means of this mechanism wherein the lead is secured to the carriage 20, the lead may beat any time pencil propelled inwardly, by the mere back-rotation of the ca to havev been end.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim 1. A pencil having the combination with a holder, of a relatively rotatable lead magazine, guiding means rotated by said magazine, a carriage mounted upon said guiding 14 in case the lead appears .ed out too far atthe writing means and rotated thereby, means to advance and retract said carriage upon rotation, said magazine and carriage being adapted to permit the leads to pass singly from the magazine and through the carriage, means to secure one of the leads to said carriage when it is in retracted position, and means to bear upon the rear of the lead extremity when said carriage is advanced. x

2. A pencil having the combination with a holder, of a-relatively rotatable lead magazine, guiding means rotated by said magazine, a carriage mounted upon said guiding" means and rotated thereby, means to advance and retract said carriage upon rotation, said magazine and carriage being adapted to permit the leads to pass singly from the magazine and through the carriage, means to secure one of the leads to said carriage when it is in retracted posi-. tion, means to hear u on the rear of the lead extremity when sai carriage is advanced, and. means to release the lead when said carriage is in advanced position. 3. A pencil-having the combination with a holder, of a relatively rotatable lead magazine, guiding means rotated by said magazine, a carriage mounted upon said guiding hearse? riagewhen it is in retracted position, and said holder having an elongated tubular portion with a parallel bore adapted to lit against the lead.

4. A pencil having the combination with a holder, of a relatively rotatable lead magazine, guiding means rotated by said magazine a carriage mounted upon said guid mg means and rotated thereby, means to advance and retract said carriage upon rotation, said magazine and carriage being adapted to permit the. leads to pass singly from the magazine and through the carriage, means to secure one of the leads to said carriage when it is in retracted position, and said holder having an elongated tubular terminal with a parallel bore adapted to fit against the lead.

5. A pencil having the combination with a holder, of a relatively rotatable lead magazine, guiding means rotated by said maga zine, a carriage mounted upon said guiding means and rotated thereby, means to advance and retract said carriage upon rota- .tion, said magazine and carriage being adapted to permit 'theleads to pass singly from the magazine and through the carriage, means to secureone of the leads to said carriage when it IS in retracted pos tion, means to release the lead when said carriage isin advanced position, and the lead having its rear terminal of a reduced diameter to permit withdrawal thereof upon its release.

6. A pencil having the combination with a holder of a lead magazine, a carriage in said holder adapted to be advanced and retracted, said magazine and carriage being adapted to permit the leads to pass singly from the magazine and through said car-W riage, means to secure the lead to the carriage when it is in retracted position, and

means on said carriage to bear at the rear 'of the lead extremity as the carriage is advaneed.

7. A pencil having the combination with a holder, of ale-ad magazine, a carriage in said holder adapted to be advanced and retracted, said magazine and carriage being adapted to permit the leads to pass singly from the magazine and through said earriage, means to secure the lead to the carriage whenit is in retracted position, means on said carriage to bear at the rear of the lead extremity as the carria e is advanced, and means to release the lea when 1t IS in advanced position.

8. A pencil having the combination with a holder, of a lead magazine rotatable relatively thereto, a. guide-rod secured to said magazine,a carriage slidable over said rod, said holder being in threaded engagement with saidcarriage to advance and retract 1 it, said magazine and carriage havin openlugs to permit the leads to pass sing y from the magazine and through the carriage, and a spring on said carriage for securing one of the leads thereto when it is in retracted position, v

- 9. A pencil having the combination with a holder, o'i'a lead magazine rotatable rela tively thereto, a guide-rod secured to said magazine, a carriage slidable over said rod, said holder being in threaded engagement with said carriage to advance and retract it, said magazine and carriage having openings to permit the leads to pass singly from the magazine and through the carriage, a spring on said carriage for securing one of the leads thereto'when it is inretracted position, a cam on said rod to release said spring to permit the lead to pass through said carriage when it is in retracted position, and said spring securing the lead to said carriage when it is advanced from the cam.

'10. A pencil having the combination with a holder, of a lead magazine rotatable relatively thereto, a guide-rod secured to said magazine, a carriage slidable over said rod, saidholder being in threaded engagement with said carriage to advance and retract it, said magazine and'carriagehaving openings to permit f the leads to pass singly from the magazine and throu h the carriage, a spring on said carriage or securing one of the leads theretowhen it is in retracted position, a-cam on said rod to re lease said spring to permit the lead to pass through said carriage when it is in retracted position, said spring securing the lead to said carriage when it is advanced -from the cam, and a spring bearing upon the rear of the lead extremity when said carria e is advanced.

glL-ih pencil having the combination with a holder, of a lead magazine rotatable rela tively thereto, a guide-rod secured to said magazine, a carriage slidable over said rod, said holder being in threaded engagement with said carriage to advance and retract it, said magazine and carriage having openings to permit the leads to pass singly from the magazine and through the carriage, a

spring on said carriage for securingoneot the leads thereto when it is in retracted position, a cam on said rod to release said spring to permit the lea-d to pass through said carings topermit the leadis'to passsingly from leasa said: springs ami permit the leads ta the magazine and through thfi carriage a pass through said carriage when if; is in respring on said carrisige for securing one tracked position.

of the leacis thereto when it is in retracted; Signed at the city 01? New York, in the position, & springbearing upon the year cauuty 055 New York, and State ef New of the bead extremity when saidi camiage; York, this 28th day of January, A. D. 1921. is advancad and a", cam on said md to 1ne- JACGB L. KLEINMAN.

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