US1346711A - Pencil - Google Patents

Description

W. K. HOLMES.

PENCIL.

APPLICATION FILED MAY 7, 1919.

1,346,? 1 1, Patented July 13, 1920.

frffl I BY pa a A TTORNEY8 operation.

I ples of this invention.

UNITED'ST'ATES PATENT OFFICE.

WILLIA K. HOLMES, or ZBRiOOKLYN, NEW YORK.

PENCIL.

To all whom z't may concern:

' Be it known that I, WILLIAM K. HoLMEs,

Pencil, of which the following is a full, clear,

and exact description.

This invention relates to a pencil in which the lead is projected from a barrel by the relative rotation of the pencil parts.

The objective of the invention is to provide a pencil of this class which is simple and durable in construction and eflicient in The invention consists in the novel construction, combination and arrangement of the parts. i

In the accompanying dra-Wings- Figure 1 is a view in elevation of a pencil constructed in accordance with the princi- Fig. 2 is a sectional View.

Fig. 3 is a view in elevation of the 1nter1or parts. 1

Fig. 4 is a sectional view taken'on l1ne 4.'4 of Fig. 3; and

Fig. 5 is another view of the interior operating parts. y

In pencils of this kind it is usually the practice to have a lead-holding member which both projects and retracts the lead upon the relative rotation of the pencil parts in opposite directions. e present invention differs in the respect that while the lead is projected by the relative rotation of the pencil parts, it is not retracted thereby, but instead is provided with a yielding holder and upon the withdrawal of the pro jecting parts the lead, must be pushed in a bent extremity 9 of alead projector 10, having a centering projection 10, the ex- Other novel features will Specification of Letters Patent. Patented J uly 13 1920. Application filed May 7, 1919, Serial No. 295,416 I tremity 9 being engaged by a spiral formed on the inside face of the shell. 1s attached near the pointed portion of the pencil to a fitting 11 which is secured to the Extending from the tube 7 to the point of the barrel is another tubular member 12 which may be formed either as an integral orseparate part of the tube 7, but is preferably of a smaller internal diameter, just large enough to accommodate the ing member 10 and the lead 3. This tubular member 12 is formed with a beveled'extremity 13 which enables it to fit closely within the pointed tip 2 of the barrel, and in this extremity of the tubular vmember 12 is a tongue 14 which may be slightly spring thinner than the adjacent portion of the tubular member 12 and bent slightly inward at the tip 15 to grip and hold the lead 3 sothat it will not fall out of the barrel, nor slip inward. This springtongue, however..- is not sufiiciently strong-to support the lead for writing purposes unless the inner end thereof is backed up by the end of the projecting member 10. v

Attached to the rear endof the shell 5 is an integral or separate extension 16 which fits within the barrel more closely than the shell portion 5, but is freely rotatable therein. In this extension 16 area number of longitudinal slots 17 which permit the member 16 to be depressed, as shown more clearly in Figs. 3 and 4,'so that the slotted portion may be bent inwardly. nsertible within the shell portion 16 from the outside of the barrel 1, is a magazine 18 having an outer tip 19 whichbears against projectv The tube 7 the end of the barrel and having a removbe carried extra leads for use with the point,

and the magazine makes a tight fit within the shell portion 16 so that the rotation of the tip 19 relatively to the barrel will cause the rotation of the shell portion 16, and also the rotation of its connected part 5. The

plug 20 is easily removable from the magazine l8, and another plug may be substituted therefor so that the rubber eraser may be renewed as frequently as desired.

In operation, a lead 3 is inserted through the pointed tip 2 of the pencil and is held in place by the spring 14. To project the lead from the barrel, the barrel is grasped with one hand and the tip 19-is rotated with the other in a direction to advance the projector 10 by means of the spiral 6. In order to protect the tip of the lead when the pencil is not in use, the projecting means may be 'slightly withdrawn by the relative rotation of the barrel and tip, and then the lead is pressed in against the holding tongue 14 until it is within the tip of the barrel where it will be ready for further use when it is again projected. It is necessary that the magazine 18 be inserted to rotate the shell member and, therefore, after a new lead is taken from the magazine and placed in the tip of the pencil, the magazine must be replaced in the barrel before the parts can be relatively rotated. Because of the close engagement of the tip of thepencil and of the tubular member 12, a thin lead can be used without danger of breaking, and this obviates the necessity of sharpening the lead for ordinary use. To use the eraser 21, the magazine 18 must, of course, be withdrawn from the barrel. The projector 10 is of sufficient length to completely eject a lead with any portion thereof from the tip of the pencil so that there is no danger of a portion of a piece of lead becoming lodged within the barrel, or within the tubular part 12.

I claim:

1. In a pencil, the combination with a barrel and a shell entirely contained and freely rotatable therein, of means operated by the relative rotation of the barrel and shell to project lead from the tip of the pencil, and a member slidably insertible within the shell but projecting without and engaging the other end of the barrel for rotating the shell with respect to the barrel.

'2. In a pencil, the combination with a barrel and an inner rotatable shell entirely con tained within the barrel, of means operated by the relative rotation of the barrel and shell to project lead from one end of the barrel and a tubular memberslidably insertible within the shell but projecting without and abutting the other end'of the barrel for frictionally engaging the inside of theshell to rotate it with respect to the barrel.

3. In a pencil, the combination with a barrel and a shell contained and rotatable therein, of lead projecting means operated by the relative rotation of the barrel and shell, a member insertible within the shell, and a frictional clutch for said member and shell comprising a slotted portion forming inwardly bendable tongues, in the wall of the shell to engage the member.

4. In a pencil, the combination with a barrel and a shell contained and rotatable therein, of a grooved connection for preventing longitudinal movement of the shell in the barrel, means forming a spiral within the shell, a slotted tube attached to the barrel having a member slidable therein with a bent extremity for engaging the spiral, and a tubular member insertible within the shell, and projecting from the end of the barrel for engaging and rotating it relatively to the barrel. I

5. In a pencil, the combination with a barrel and a shell rotatable therein, of means actuated by the relative rotation of the shell and barrel for moving the lead, the shell being formed with longitudinal slots between which thematerial is bendable inwardly, and a tubular member insertible therein projecting from one end of the barrel and frictionally engaged by the shell adjacent the said slotted portion for rotating the shell relatively to the barrel.

G. In a pencil, the combination with a barrel and a shell contained and rotatable therein, of means for moving lead by the relative rotation of the shell and barrel, resilient means for opposing the movement of lead in the tip of the pencil, a hollow tubularmem ber insertible within the shell but projecting from the end of the barrel and frictionally engaging the shell for rotating it relatively to the barrel, and a plug including an eraser for closing the tubular member and forming -a magazine therewith.

7. In 'a pencil, the combination with a barrel and a lead-holding tube at the tip thereof, a longitudinally slotted tubular member alined with the lead-holding tube, a projector slidable in the slotted tube having a bent extremity which extends beyond the slot of the tube, a shell loosely mounted within the barrel having a spiral projection on the inner wall thereof to engage the bent extremity of the lead projector, a hollow tubular member inserted within the shell at the end of the barrel opposite the tip and projecting therefrom, and means forming a frictional engagement between this hollow tubular member and the inside wall of the shell for rotating the shell relatively to the barrel and thereby advancing andv retracting the lead projector in its tube.

8. In a pencil, the combination with a barrel, of a shell freely rotatable therein having a plurality of longitudinal slots a bent, extremity engaging the spiral of the shell and held against rotation by the slot of the tubular member in which it is longi-c tudi'nally movable, and a lead-holding tube into which the lead projector extends having a bent tongue adjacent the tip of the pencil for frictionally engaging a piece of lead contained therein.

9. In a pencil, the combination with a barrel pointed at one end, of a lead-holding tube secured in the barrel and extending close to the pointed tip of the pencil with an integral spring tongue to frictionally engage lead contained therein close to the extremity of the pencil tip, a shell contained within the barrel and freely rotatable therein but held against longitudinal movement and having a plurality of slots adjacent the end of the barrel opposite the tip, a hollow tubular member with an enlarged head insertible at the end of the barrel for engaging the slotted portion of the shell to form a frictional connection therewith, and means for projecting the lead outwardly from the pencil but not for retracting it, said means comprising a spirally arranged wire secured on the inside of the shell, a longitudinally slotted tubular member secured to the barrel in line with the lead-containing tube, and a projector movable in this tube having a bent extremity extending through the slot of the tube and into engagement with the spiral formed by the said wire so that the relative rotation of the shell and the barrel will cause the movement of the lead projector in one direction or the other.

10. In a pencil, the combination with a barrel and a shell formed with longitudinal slots between which the material is bendable inwardly, of means actuated by the relative rotation of the shell and barrel for moving the lead, and means insertible within the shell and into engagement with the inwardly bent portions thereof for frictionally engaging said shell to rotate the latter and advance the lead moving means. 11. In a pencil, the combination with a barrel, of a shell formed with longitudinal slots between which the material is bendable inwardly, means actuated by the relative rotation'of the shell and the barrel for moving the lead, and means for rotating the shell, said means being insertible in the open end thereof and projecting from the open end of the barrel, the inner end of said rotating means being frictionally engaged with the inwardly bent material between the slots whereby the rotating means is mov able relatively to the shell upon reaching the extent of movement of the lead moving means.

- WILLIAM K. HOLMES.

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