US1752563A - Pencil tip - Google Patents

Description

Patented Apr. l, 1930 UNITED sTATEs'gPATENT osmet-: Y

FRANK J'. KRISTOFEK, OF ST. PAUL, MINNESOTA, ASSIGNOR TO BROWN & IBIGELOW, OF ST. PAUL, .MINNESOTA, .A CORPORATION OF MINNESOTA.

PENCIL TIP Application flled April 27, 1925. Serial No. 26,122.

My invention relates to pencils, as particularly designed to provide a tip for a pencll so as to'form a finished writing end. This construction provides means so' that 'if it is desired, precious metal can be attached overthe tip to cover the same.

It is also a feature of my invention to provide a writing tip for the pencil Which is provided with a shank attached to form the supporting end for the threaded tube of the pencil which forms a part'of the propelling means.. The tip thus supports the forward end of the threaded tube, holds it rigidly attached thereto and holds the tip in alignment .16 with the barrel of the pencil.

.My invention also includes a pencil Wherein a portion of the propelling means is held removable from the rear end of the pencil barrel. rThe forward end is reduced and extends into the writing tip member so as to form a bearing for the forwardend of the V center t'ube of the propelling means `to align the same with the tip and permit the lead in Writing position in the pencil to be carried centrally with respect to the writing tip.

These features, together with other objects of my invention, will be more fully set forth in the following specification and claims.

In the drawings forming a part of my specification:

Figure 1 is a longitudinal cross section ofy a portion of my pencil illustrating my improvement and showing the operating center tube of the pencil in full.

Figure 2 illustrates the threaded tube and Writing end removed from the pencil barrel in enlarged formation. 1

Figure 3 is an enlarged cross sectional view of the Writing Vtip and forward end of the threaded tube.

Figure 4 illustrates an enlarged view of my threadedmember 13 which is adapted to form -a portion of' the propelling means of my pncil A and which supports the writing tip The writing tip 14 is tapered in a mannerv to form a writmg point 15 thereon and to provide a shoulder 16 spaced'back of the point 15 which'engages with the shoulder 17 formed 'and holding the writing tip and the threaded member together.

The tip 14 is formed with an axial opening 20 which extends through the shank 18 and on the outer' end of the shank 18 a counter bored portion 21 is provided., The threaded portion 13 and the tip 14 form a unit which is 4placed into the forward end of the barrel 10 under friction in a manner to hold the same firmly therein. If it is desired the rear edge 22 of the threaded member 13 may be pressed out on either side to form ears 23, as illustrated in Figures 1 and 5, to lock this' unit, consisting of the threaded tip and unit 14, rigidly .in the pencil barrel 10. It is not necessary todo this if the frictional engagement of the threaded tube with the barrel is suificient to hold the same in place.

The writing tip unit and threaded member form one portion of the propelling means of the pencil A which is designed to be held in the pencil barrel 10 under ordinary conditions. If the unit is not looked by the ears 23 it may be removed as it is only held in the barrel under frictional tension.

The pencil A is provided with a center tube operating member B -which forms the other part of the pencil A and which is removable, being held by the friction slecve lockinY member 24 which is carried freely rotata le by the shoulder 25 formed on the member B. 'The member B is provided with an operating head 56 which is-rigidly conmaterial.

nected to the enlarged portion 27 which is formed on the rear portlon of the propelling member B and is adapted to form a lead magazine owing to its hollow tubular nature.

The head 26 is provided with an eraser 28 on the outer end'of the same.

The member B is provided with a forward center tube portion 29 Which is reduced in size as compared to the portion 27 and which is adapted to extend through the threaded tube 13 with the forward end 30 extencling into the opening 20 which forms a bearing for the forward end 30 of the center tube 29. The counter bored portion 21 of the tip 14 facilitates the end 30 freely entering the tip opening 20. The center tube portion 29 of the propelling member B of the pencil A is adapted to carry the writing lead 31. The writing lead 31 is carried by the pusher 32 which slides back and forth in the tube 29 and is operated by engagement with the threaded tube 13.

The Writing tip 14 may be provided with a swaged tapered end 33 to form the tip 15 of the pencil and in which instance the for- Ward portion of the tip 14 is cut away at 34 and the tapered end 33 forms the forward end of the same. This tapered end 33 would only be used when it is desired to have the tip covered with the precious metal such as silver, gold or other suitable material.

- The end 33 is secured to the core of the tip 14 by rolling the rear edge 35 over the shoulder 16. In rolling the edge 35 over the shoulder 16 it is desirable to provide a square shoulder and thus the barrel 10, which is indicated in dotted outline in Figure 3, fits against the inturned edge 35 to form a smooth connection between the tip and the barrel 10.

In this manner I provide a pencil and construction which is very desirable. particularly where it is designed to use the barrel made of wood or non-metallicmaterial, such as rubber, fiber or any other suitable 4non-metallic This 'form of barrel forms a'covering for the threaded tube 13 and the rear end of the operating member B 'of the pencil to provide a very attractive pencil, having a simple construction and of an inexpensive nature. It is important that the tip 14 be held firmly and in my construction-it is not necessary to solder the same onto the threaded tube 13 when it is desired to use a pre- 'cious metal tip. The covering 33 is attached in the manner described.

It is also an important feature of my invention to provide the bearing for the end 30 of the center tube of the operating propelling member B of the pencil. In this manner the operating parts of the propelling means align with the opening 20 at the tip and permit lthe writing lead 31 to pass freely through the same.

In accordance with the patent lstatutes I have described the principles of operation of my invention together with the illustrations which I now consider to be the best' embodiment thereof, however, I desire to have it understood that the drawings are only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth, within the scope of the following claims.

1. A writing end for a pencil including a tubular member, a tapered portion formed on the end of said member, an annular shoulder at the beginning of said tapered portion and a swaged tapered tip of precious metal adapted to be attached to said tapered portion by rolling the inner edge of said swaged tapered tip over said shoulder to rigidly attach said swaged tapered tip to said portion.

2. A pencil tip including a tubular core member, one end of which forms a shank for `attachment with the body of the pencil and the other being formed with a tapered portion having an annular shoulder projectiug about said shank and a precious metal swaged writing tip adapted to be rigidly attached to said core member by rolling the inner edge of the same over said annular shoulder.

- 3. A pencil tip including a core member adapted to receive a thin shell-like facing tip portion to rigidly support the same, the tip portioncovering the core member, having a different outer face metal than the core member and an annular shoulder 1on said core member over which said facing engages.

4. A pencil including a writing tip having a thin outer facing of precious metal. a barrel portion for supporting said tip of a nonmetallic nature, a core extending from said barrel at the tip end to support said outer facing and an annular shoulder on said core against Which the front end of said barrel engages.

5. A pencil including a barrel of nonmetallic Substance, a propelling means extending in said barrel, a metallic tip for said barrel including a shell-like sleeve of a conical nature, a core member for supporting said tip rigidly with said barrel, an annular shoulder on said core and an annular edge on said sleeve adapted to project inwardly over said shoulder to rigidly support said tip.

FRANK J. KRISTOFEK.

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