US1425323A

US1425323A - Pencil

Info

Publication number: US1425323A
Application number: US474395A
Authority: US
Inventors: Frederick H Kay
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-06-02
Filing date: 1921-06-02
Publication date: 1922-08-08
Anticipated expiration: 1939-08-08

Description

F. H. KAY.

PENCIL.

APPLICATION FILED JUNE 2. 1921.

Patented Aug. 8, 1922.

Izzflegfiaf ZCZZTZCK; ,Kay

UNITE ATE"? FEQ FREDERICK H. KAY, OF CHICAGO, ILLINOIS.

PENCIL.

Application filed June 2,1921. Serial No. 474,395.

To all whom it may concern Be it known that I, FREDERICK H. KAY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pencils, of which the following is a specification.

This invention relates to a pencil having within its body a removable lead and means for advancing the same as desired.

It is a primary object of this invention to produce an inexpensive pencil which will utilize all the lead that is contained within its body, and further to provide a propelling means for the lead which is very simple and certain in its operation. These and other objects will more fully hereinafter appear from the specification and claims, and from the accompanying drawing wherein is shown a preferred embodiment of my invention in the manner following:

Figure 1 is a longitudinal section through the pencil;

Fig. 2 is a similar view, enlarged, of the block which lies rearwardly of the lead, the adjoining parts also being shown;

Fig. 3 is a similar view showing the relation of the parts at the moment the lead is advanced; and

Fig. 4 is a transverse section taken on line eL-:t of Fig. 3.

The present pencil comprises a body A having therein a lead B which is slidingly received within a central bore or aperture 0 which, as shown, may be square in cross section. At the upper or rear end of the pencil is a plug D which closes the bore.

The means for propelling the lead comprise a slidable impeller E which may be caused to move lengthwise in the pencil by properly manipulating the same and a blocl; F adjacent the rear end of the lead B adapt ed to be driven forward by impact from the impeller. In order that the lead may be held against retraction within the pencil, I have provided means associated with the block for assuring its movement in one direction only. As appears best in Figs. 2 and 3, the block is formed with a transverse cut 5 that extends from one side of the block close to its other side, being bordered by a transverse wall 6, an oblique wall 7, and an angular wall 8, as shown. Arranged within the cut thus formed is a dog 9 which is generally cubical in shape so as to be capable of lying either against the transverse wall 6 or the oblique wall 7, while resting at the same time against the angular wall 8.

In advancing the lead the pencil is properly shaken or otherwise manipulated to drive the impeller forward against the block, whose end 10 abutting the lead is preferably oblique, as shown. During forward movement of the lead thedog assumes an uppermost position against the wall 6 so as to present one of its sides squarely against the walls of the bore C. The moment that the pencil is put to use, pressure applied to the writing end of the lead will be communicated to the oblique end 10 of the block so that with very slight movement the dog 9 is caused to tilt to the position shown in Fig. 2 where one of its corners bites into the wall surrounding the bore C. With the parts so related the block will be held against a retractive movement, thus maintaining the lead in its advanced position.

The construction heretofore described is very simple and may be produced at small cost. The invention is characterized by the use of an impeller device which acts to ad vance the lead through impact delivered to a block which lies rearwardly of the lead, there being associated with the block means for preventing retraction of the lead when pressure is applied to its writing point.

I claim: v

1. A pencil having a body within which is a bore, a lead slidingly held within the bore, a block within the bore arranged rearwardly of the lead and provided with a cut therein which faces one of the walls surrounding the bore, a dog mounted within the block out and arranged to tilt therein to present its acting edge against the walls surrounding the bore whereby the block is locked against movement in a rearward direction, and a device arranged to slide freely within the bore and associated with the block for ad-, vancing the same in a forward direction to thereby move the lead, substantially as described.

2. A pencil having a body in which is a bore, a lead slidingly held within the bore, a block within the bore arranged rearwardly of the lead, friction means associated with the block adapted to wedgingly engage the walls surrounding the bore only when a retractive pressure is applied to the block, and a device freely s'lidable within the bore for advancing the block a forward direction to thereby move the lead, substantially as described. 3. A pencll having Within its body a bore,

a lead slidingly arranged Within the bore,

means slidingly secured Within the bore at the rear end of the lead adapted to move ment in, a rearward direction whereby the impeller may move the: lead. through the medium of the block by impact in a forward direetiononly, substantially as described.

5. A pencil haying alead and an impeller therefor, each arranged slidingly and Wholly Within the pencil body, and means interposed between the lead and impeller and adapted to move only in a forward direction;

whereby the lead is held against retraction,

substantially as described.

6. A pencil havinga lead and an impeller therefor, each arranged slidingly and, Wholly Within the pencil b0dy,the impeller being adapted to advance the lead by impact" thereupon, substantially as described.

' FREDERICK HZ KAY.

Witness:

EPHRAIM BANNING.