US1828527A

US1828527A - Pencil

Info

Publication number: US1828527A
Application number: US595606A
Authority: US
Inventors: Howard L Fischer
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-10-19
Filing date: 1922-10-19
Publication date: 1931-10-20
Anticipated expiration: 1948-10-20

Description

H. L. FISCHER PENCIL Filed Oct. 19. 1922 2 Sheets-Sheet l 31a/vento@ oct. 2o, 1931.

Oct. 20, `1931.

H. L. FISCHER' PENCIL Filed 0013- 19; 1922 2 Sheets-Sheet 2` me/nto@ Patented 'Oct 20, 1931 PATENT oFF-mE Howmn I.. rrscmm ors'r. rAUL, MINNESOTA.

PENCIL Application mea october is, was. serial no. 595,606.

le' manner to carry with it the lead holder and being vprovided with a frictional engaging means, of aresilient nature, which engages.

the barrel proper of the pencil to hold the operating member in posltionin the pencil against free longitudinal movement.

A feature of the invention resides in providing a tubular threaded member within thebarrel, or'casing of the pencil which lis formed with a writing point and a shoulder for engaging against the casing or barrel of the pencil so as to hold the threaded member fixed in the barrel against the writing pressure onl the marking lead.

The shoulder formed on the threaded mem.-

Si ber and the writing end are integral with the same and conform with the barrel, or casin so as to provide a writing end on the pencil of a uniform and attractive appearance so as to similate the ordinary writing end of a l0 sharpened pencil.

The threaded member of the pencil extends into the hollow barrel unsupported at its rear end, and a suitable means is provided for centering this free end when the pencil is in operation. the operating member or by suitable means which are brought into engagement with the `barrel and the threaded tube at its rear end. It isnot wholly essential that the inner free end of the center tube be secured excepting when the pencil is in use so as to cause it to operate properly. Obviously the operating member which extends axially into the barrel, from the rear end, will center the rear free end of the threaded member.

All of the features of the invention will be clearly defined and set `forth in the specification and claims.

In the drawings forming' a part of this 50 specification:

This is accomplished either with' `writing tip 16 which is provided with an Figure 1 is a longitudinal cross section of my pencil.A v

Figure 2 is a longitudinal cross section of my pencil with the operating member removed therefrom. Y

Figure 3 illustrates an alternative' con' struction of. my pencil where the different casing, or barrel is used.

Figure 4 illustrates a dierent form wherein the center threaded tube is independent from the writing tip.'

Figure 5 illustrates means for centering the rear end of the threaded tube.

Figure 6 is 'a detail of the threaded tube illustrated in Figure 5. Figure 7 is across section on the line 7-7 of Figure 5.

Figure 8 is a cross section similar to Figure 7, illustrating a means of centering the threaded member in the pencil.

Figure 9 is a lperspective view of the cenltering member used in Figure 8.

In the drawings the pencil A is illustrated witha composition barrel, or casing member 10 formed of wood, rubber, ivory, or a fibre 5 material, which is non-metallic.

The casing 10 is formed with a forward conical portion 11 having the same taper as that of the writing ,end of the pencil and is provided in the rear portion thereof with an enlarged chamber 12.

A tubular threaded member 13 is provided with threads 14 extending into the forward end 11 through the opening 15 in the casing 10, so as to frictionally engage the member 13 and hold it against freedisengagement from the casing. The forward end of the threaded' member 13 is formed conical to provide a opening 17 through the apex for the marking lead 18 held in writing position in the pencil.

A shoulder 19 is formed on the writing tip 16, which engages with the forward edge of the casing 10 in a manner to hold the threaded member in the pencil so that the writingv pressure on the lead will be transmitted from the shoulder to the orward'edge of the casin and thus provide a construction wherein only a minimum friction is required through 100 the opening to hold the threaded member in the barrel 10.

The threaded tubular member 13 extends into the chamber 12 of the casing 10 in a manner to provide a circular magazine chamber '20 forr extra marking leads 18.

An operating member 21, which carries the lead carrier 22, extends axially within the threaded member 13 and is provided with an operating head 23 which carries an eraser 24 with a cap'25 covering the eraser and forming a finger engaging end for operating the member 21. When the cap 25 is removed the head 23 proper can be engaged and operated to rotate the member 21 and thereby cause the lead carrier 22to be rotated over the threadsll and propel or repel the marking lead 18.

The head 23 is formed witha shank 26 which is provided with an annular recess 27, in which a spring friction sleeve 28 is held.

,The spring sleeve 28 is adaptedv to engage directly with the inner surface of the barrel, or casing 10 andto provide a locking means for holding the operating member 21 againstfree longitudinal movement, but in a manner so that it can be freely rotated to operate the writing lead in writing position.

The shank 26 is formedwith a recess 29 into which the free end of the threaded member 13 is adapted to extend in a manner so as to ward end of the same is held within the bore,

length within the barrel.

or opening 15. In this manner the threaded member is held centrally throughout its The recess 29 is formed with a bevelled edge so as to cause it to freely and readily engage the end 30 of the threaded member.

In Figure 3 a metallic, or thin wall casing 10 is provided, the forward end of which is swaged to form the writing tip and the threaded member 13 is fixed within the barrel by means of a collar31 which is fixed to the threaded lnember 13 and which frictionally engages the barrel to hold the threaded member within the same. The forward end of the threaded member 13 engages the inner conical surface of the writing tip.

In this construction the rear endof the threaded member 13 is held in exactly the same manner as illustrated in Figure 1, extending within the recess 29 of the shank 26, while the frictional spring sleeve 28 engages the casing to hold the operating member 21 within the barrel against free longitudinal movement.

vThe spring sleeve 28 holds the operating member against longitudinal movement when in operation in the pencil to propel, or repel the marking lead and permits the same to be withdrawn from the casing and threaded member so as to' insert a new marking lead in tho socket of the lead carrier 22. When the operating member 21 is removed from the casing the marking leads in the magazine chamber 20 can be freely withdrawn.

vThe construction illustrated in Figure 1 and Figure `2 permits the threaded member 13 to be withdrawn and replaced by a new ysimilar member by engaging the writing tipV '16 and lwithdrawing the same from the open- In the drawings, Figures 5, 6 and 7 illustrate spacing members 35, which are formed in the inner end of the member 13 and adapted to engage the casing y10 within the chamber 12 to\center the rear end 30 of the threaded member 13. In this construction it is not necessary to provide a recess 29 within the shank 26..

In Figure 4` a writing tip 36 is provided with a threaded end 37 which is adapted to engage within the forward end of the barrel 10 to/ hold the tip 36 independent of the threaded member 38 of the pencil. In this construction the tip 36 may be provided with a shell 39 of precious metal to cover the outer surface of the tip. In this construction the threaded member 38 is formed with an annular shoulder 4,0 on its forward end which engages against a complemental similar shoulder formed near the forward end of the opening 15 to hold the threaded member 38 against backward movement in the pencil casing. When the ti 36 is removed from the casing the threa` ed member 38 can be forced out of the opening 15 to remove it from the casing, thus the threaded end of the tip is adapted to engage the shoulder 40 and yassist in holding the threaded member 38 in the barrel in this construction.

The threaded tube 38 is formed with a shoulder 40 on its forward end and the rear end is slit as illustrated in Figure 6 so that after the threaded member 38 has been inserted through the opening 15 in the composition barrel and the tip 36 is screwed into the threaded portion 37 the spacing members 35 are bent up so as to project radially from the tube 38 and engage the inner surface of the barrel to form spacing members 35. The member 38 is formed of comparatively soft material and the members 35 can be easily en- `within the casing 10. These figures illustrate another manner in which the rear end of the threaded member can be held central within the casing. l

It is essential in making u a pencil to provide a construction which 1sV slmple and is composed of a very small number of parts. With this in mind I have endeavored to illustrate in Figures 1 and 2 a most simple construction, where a composition barrel can be used for the casing of a pencil. The parts are easily manufactured 'and readily as4-y sembled so as to provide a pencil with a nonby said operating member and frlctlonal metallic barrel and yet containing a ractical lead propelling mechanism so that t e marking lead will be held firmly in writing position and can be easily withdrawn or forced into the pencil casing to protectthe. same. The lead carrier 22 is provided with all of the features of my'Patent N o. 1,370,420 issued on March 1st, 1921. The frictional engagement of the sleeve 28 under spring tension, with the casing of a composition barrel, provides a very eiiicient means for holding the operating meni'berfof the encil in the casing.

The formatibn vof the t readed member of my encil is an important feature of the inventlon, as illustrated in Figures 1 and 2, as it provides an extremely simple, inexpensive construction; the writing tip is formed as an integral part with the threaded member, providing anannular shoulder to/ll'old it in position in 'the casin -It will be readily,l apparent that these eatures combine together to make up a pencil of a very desirable nature.

I claim:

1.' A pencil having a com ositionnon-'metallic casing, a tubular threa ed member having a writing tip formed on the forward end thereof, said threaded member extending inte said casing, an operating member and means associated with said operating member adapted to center the free end of said threaded member within said casing when said operating member is in position within said casin 2. pencil including, a non-metallic casing, a threaded member extended within and supported on its forward end by said casin lin a manner to project the rear end of sai threaded tube within said casing to form a circular chamber thereabout for extra marking leads, a writin tip associated with thev forward end of sai threaded member and a lead operating means adapted to enter the rear of said casing and to center the free rear end of said threaded member. v

3. Apencil including, a casing, a chamber formed in said casing, a threaded member having an integralwriting tip extending into said casing with its front end supported therein and the rear end unsupported by the 5. A pencil having a casin a lead propell ling means including a three ed member held within the barrel, a lead carrying operating member, an operating closure head carried meanscarried by said head adapted to engage said pencil casing and toA remain stationary while the operating head and member are rotated in operation of said pencil.

6. A pencil comprisin a composition barrel, a threaded member aving a writing tip 5 formed thereon adapted to be removably held in said barrel anda lead carrying operatin member removably heldin the rear end o said pencil adapted to cooperate with and hold said threaded member centrally within the rear end of said barrel.

7. A pencil including, a composition barrel, a threaded member adapted to be removably held Within said barrel, a writing tip on the forwardl end of said threaded member, a lead carrying operating member adapted to co-act with said threaded member in a 'manner to operate the marking leadtherein,

ment with the threads of the other tube and a head iixed to one end of the slotted tube telescopically engaged with one end of the barrel, whereby the slotted tube may be rotated in the barrel b means of said head or may be withdrawn with its head and plunger as a unit.

9. In a pencil comprising a barrel and a removable head thereon having a lead-propelling mechanism fixedly attached to said head,

an eraser pocketed in the head and an opening accesslble from the same side of the head to which the propelling mechanism is secured to permit the insertion of means for ejecting the eraser from the head.

10. In-a pencil comprising a barrel, a removable head thereon having lead-propelling mechanism attached to said head, said mecha-- nis'm co-operating with a threaded tube axially fxed in and spaced from said barrel,

'whereby to define an annular spare lead chamber thereabout.

11. In a pencil com rising a barrel, a rem'ovable head thereon aving lead propelling mechanism attached to said head, said mechanism having engagement with al threaded tube axially fixed in' and spaced from said barrel, whereby to define an annular spare lead chamber thereabout extending the length of the barrel.

l2. In a pencil comprising a barrel, an internally threaded tube spaced from and fixed l axially therein whereby to define an annular chamber about said tube, a longitudinally slotted tube rotatably carried in the threaded tube, a plunger in the slotted tube having a follower which projects through the slot for engagement with the Vthreads of the other tube, and a head fixed to one end of the slotted tube and removably engaged with one end of the barrel so that the slotted tube with its head and plunger may be Withdrawn as a unit from said barrel, said chamber being accessible by the removal of the slotted tube from the barrel.

13. ln a mechanical 4pencil having a barrel d. and a tapered tip, an internally threaded tube secured in said barrel in spaced relation to define an annular chamber about the tube, and extending into the tip, and mechanism cooperating with the tube for JEef-:ding a lead th ou hth t' r g B IUWARD L. FSCHER.