US1060099A - Pencil. - Google Patents

Description

PENCIL. APPLICATION FILED SEPT. 23, 1907.

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A'LBERT J'. HECK, OF ST. PAUL, MINNESOTA PENCIL.

Specification of Letters Patent.

Patented Apr. 29, lgvll.

Application filed September 23, 1907. ySerial No. 394,095.

To all 'whoml it may concern:

i Be it known that I. ALBERT J. Knorr, a citizen of the United States, residing at St. Paul7 in the county of Ramsey and State of Minnesota. have invented a new and uscful Improvement in Pencils.` of which the `following is a specification.

This invention relates to a pencil having a tubular holder in which a series of marking points is held longitudinally by a fangible projector or filler said parts being so constructed as to permit the projector being ad Tanced to expose a fresh marking point at the writing end of the pencil as required.

As distinguished from prior inventions this device is provided with means where by the projector filled with points may be directly engaged and advanced by hand at or near the writing end ofthe pencil instead of by the use of mechanical means such as disclosed in Patent No. 050,078 granted to me on lfayQQ, 1900. c

My invent-ion further consists of features of construction and combinations of parts which will be hereinafter more fully described and claimed. j

In the accompanying drawing, forming part of this specication, Figure l is a side view of my invention; 2. is a longitudinal section with the marking points and the projector in which they are fastened shown in full; Fig. 3 is a longitudinal section -through a detail of the marking end of the pencil, and Figs. et and 5 are enlarged views of details of the projector and the marking points therein.

In the drawings A indicates a magazine which is in the form of a casing or cylin der having on one end a removable cap B which may or may not support an eraser 2 as desired. ln the longitudinal passage 3 of the casing is a projector C which sup ports oa series or string of individual marking points 4 made out of graphite or other suitable material. The projector as shown is made out of a thin strip of metal or other suitable frangible material having notches cut therein forming arms 5 and 6 which are lateral to the longitudinal axis of the filler and have their ends bent to form tight bands or gripping means around the bodies or butts of the points et and thus support said points rigidly. 'The notches also serve to p weaken theyprojector at al point adjoining the forward edge of each band. This weakcned part referred to is produced by tapering the web 7 between cach pair ofbands from the forward bandA to the one immediately back of it. By tapering the web from a forward band to one immediately back of it and by forming arms 5 and 6 of substantially equal length as shown a stronger and more rigid construction of filler is produced with a minimum amount of material and the points are more tightly held to prevent lateral and rearward movement` thereof in the filler when in use.

At the writing end of the pencil is a tubular holder D made out of Vthin metal or other suitable material and providing a passage through which the projector with the marking points is adapted to pass. The inner end of the holder is seated in and supported by the casing and its outer end is somewhat reduced in size to form acollar 8 in which a band A5 with the body of a marking point within is firmly supported against lateral movement as each new marking point is advanced from the casing. mmediately back of the collar 8 the sides of the holder are cut away at 9 to form an opening so that the projector can be engaged and moved forward by hand a step at a time to advancean unused marking point on the outer end of theholder when the one preceding it has worn out. As the projector is moved forward, a pair of spring dogs l0 engage the inner edges of the bands 5 and prevent the projector from moving back into the magazine. These dogs are struck in from the shell of the holder D and their free ends project into the holder and toward Vthe writing end of the pencil. The holder D may be held in the casing by making a tight fit betweenthe partsor it may be otherwise suitably fastened in place.

In use the projector holding .a series or string of individual marking points is placed in the magazine by removing the cap B and as each marking point wears away'a new point can be brought into service by moving the projector forward by hand and breaking od that portion of the projector extending beyond the holder D.`

lt is obvious that when a projector has been used and the magazine is exhausted, anew projector with a charge of unused points can. be placed in the casing and. used.l

In accordance with the patent statutes, I

have described thel principle of operation of my invention, vtogether with the con-- j j vstruction which I now consider to represent the best embodiment thereof, but I desire to have it understood that the device shown is only illustrative and that the invention can be carried out byA other means and ap-. plied to uses other than those above set forth, within the scope' of the following claims. I

Having described my invention, what I claim as new and desire to protect by Let# ters Patent, is r' v 1. A device fof the class set forth, comprising, a hollow pencil casing, aprojector having a seriesof pairs of laterally extending arms and a series of webs each converging inwardly between the pairs of arms, a marking point embraced by each pair of arms and a holder at the writing end of said casing having an opening in its end in which the forward marking point and its arms are heldand an opening in its side beyond the casing through which the holder can be engaged to move it forward a step at a time to'project a fresh marking point when.

the one preceding it has worn out.

A pencil comprising a casing, a frangible projector containing a series of individual marking points fixed thereon, and means for preventing said projector from returning into said casing but permitting its advance through the casing in the writing end of said pencil, said casing being formed to fit the projector closely at the writing end of the pencil and apertured to permit the projector in writing position to be engaged by hand and moved forward to expose a new marking point on the `writing end4 of the pencil.

3. A pencil, comprising, a casing, -a itubuf'l lar holder projecting from the writing end of said casing and having an opening Iin its side and a collar on its outer end, and a projector adapted to .hold markin points and having a gripping means or each point,.said grippin means being adapted to be securely held .whereby alllateral play of saidprojector is aterally by said collar V prevented ,on the writing end. of said pencil..

4:. In a pencil of thefclass set forth, a frangible projector having a series of marking points comprising a seriesof pairs'ofarms each pair being adaptedV to embrace the butt of one ofsa'id points and the arms of each pair being of substantially equallength and a web between the pairs of arms having its edges converging from one pair of arms to the next preceding pair, whereby the projector is weakened at a. point adjoining the forward edge of each pair of arms and av strong rigid point holding structure is produced.

5. A frangible projector having a series.

of marking points, bands embracing said points and weakened webs disposed between said bands, and a tubular holder in. which said projector is carried and held against lateral play having a space in its side through which said projector may be engaged by hand and moved forward toexpose a fresh marking point beyond one end-thereof, and a stationary dog automatically engaging said projector to prevent its return into said holder. l

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. ALBERT JAKECK. vWitnesses:

R. A. FISCHER, F. Gr. BRADBURY.

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