US1427729A

US1427729A - Pencil

Info

Publication number: US1427729A
Application number: US469295A
Authority: US
Inventors: Howard L Fischer
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-05-13
Filing date: 1921-05-13
Publication date: 1922-08-29
Anticipated expiration: 1939-08-29

Description

H. L. FISCHER.

PENCIL.

APPLICAUON HLEQ MAY13,1921.

Patented Aug. 29, 1922 l UNITED STATES PATENToFI-Ica HQWARD L. FISCHER, 0F ST. PAUL, MINNESOTA.

PENCIL.

mechanical pencils using a precious metalr barrel or casing to provide means which allows the propelling means to be entirely separable from the casing, so that should the propelling mechanism need to be repaired or replaced, this can be readily accomplished without making it necessary to send the pencil back to the factory or in any way a'ecting the enclosing casing.

It is essential that a pencilof this nature be so designed as to give the user continuous service and tofaccomplish this l have made my pencil with the parts of the propelling means separable from each other. The propellingl meansconsists of only a small partor partsl the operation of which is apparent to the user on taking the mechanism apart thus allowing one to use =the pencil in a more intelligent manner.

A feature of the invention is in the means for locking the parts of the propelling.,

mechanism together to hold them firmly 1n position in the casing in position ,for use. This lockin means is associated between the magazine c osure and the operating head of the-pencil while theclosure forms means for holding the entire operatin mechanism positioned within the casing. he locking means is rotatably'secured to the magazine closure and is attached to the same so as not to be separated therefrom. The locking member is adapted to rotate with the operating head when'the mechanism is operated. In the drawings forming part of this specification: v

Figure 1 is an enlarged longitudinal cross 4 sectional view of the/pencil.

Specifica/cien of Letters Patent. Patented Allg'. 29, 1922 Application filed May 13, 1921. Serial No. 469,295. A

whlch 1s provided with an enclosing casing or barrel 10 preferably of a precious metal tubing such as gold or silver which is adapted to house the lead operating mechanism B. The forward end 11 of the pencil casing l0 1s wedged to simulate the conical end of the ordlnary writing pencil and is provided with an opening 12 in the apex through whlch the marking lead 13 passes as it is promted by the lead propelling mechamsm The lead propelling mechanism B coni sists of a tubular threaded member 14e to one end of which isf secured a spacing or stop washer l5, while a closure collar 16 is secured to the other end of the member 14C. lt 1s obvious that these

members

15 and 16 can be secured or attached to the member 14 rigidly in any suitable manner.

- The washer member 15 forms a shoulder and spacing element to hold the inner member 14 spaced from the casing 10 and the closure 16 which is formed with a threaded portion 17 engages a threaded collar .18 positloned in' the rear of thelarge end 19 of the barrel or casing 1 0, thus the member 14 is held lirmlyv in the casing of the pencil A against rotation Vor longltudinal movement and in position to form an annular space or magazine 20 for extra marking lead between the member 14 and the wal of the casing 10.' i Y y A collar 21 is rotatably secured to the closure member 16 by means of a projectf in'g portion having an inturnedv end 22 which is formed integral with the body portion 1,6 to hold the collar 21 freely rotatable in relation to the member 16. The outer surfaces ofthe

1members

16 and 21 are covered by

annular bands

23 and 24 respectively which are formed of tubing of the same metal as the casing 10 so that if the casing 10 is of gold, the bands 23 and 2t would be of gold while. the

parts

16 and 21 canA beVV formed 'of any suitable cheaper material. The

bands

23 and 24 are securely attached to the

members

16 and 21 While the band 23 is adapted toproject over the edge ofthe member 2l sol as to? cover the joint between these 'two members. This allows for the; forming of a practically invisible joint between these members.

rlhe operating memberY 25 of the mechanism B extends axially through the member 14 and is held centrally positioned at its forward end therein by the opening 26 in v the projected end of the same.

`forminga rictional engagement between the members 14C and 25 and to compensate for any wear between these members. The resilient ends of the lead carrier C also allow the marking lead to be slipped back into the casing by direct pressure against Such pressure causing the lead carrier to slip over the threads and allow the lead to be protected.

The operating member is rigidly attached to the nipple 28 which projects from the operating head 29 and the operating head is rigidly attached and secured te the connect the cap and the operating head to,

collar 2l by the. .threaded portion 30 formed thereon which engages with internal y threads 3l formed in the outer end ol the collar. By firmly engaging collars 23 and` 24e, the operating head 29 can be attached or disengaged from the member 2l. When the operating head 29 is secured tothe member 2l and the mechanism B is operated, the member 21 and its collar 24 is adapted to operate with the operating head 29.

A suitable recess 32 is formed in the operating head29 which is adapted to receive an eraser 33. lln order that the eraser may be enclosed and protected, a suitable cap 34 is provided, if it is desired, which engages the outer surface of the operating head frictionally or otherwise in a manner to rigidly gether, so that by rotating the cap 3fl`it will rotate the operating head29 and thus operate the mechanism of the propelling means B of the pencil A.

Theessential features of this invention reside 'in means for locking the operating parts of the lead propelling mechanism together at the rear end of the pencil casing 10 in va manner so that the parts of the propeiling mechanism can be separated when desired from each other and also so that theinner parts can be covered by a suitable tubing or incasing bands f the same metal as the casing of the pencil A, still allowing the parts to be freely operated and disengaged from each other when it is desired. This construction allows the entire propellingY mechanism to bereinoved from the pencil casing to leave the same entirely empty by firmly engaging the

bands

23 and 24 and disengaging the threaded portion 17 of the member 16 from the collar 18 of the pencil.

When the parts are so engaged the magazine chamber 20 is also opened so as to expose the extra marking lead therein. It is, however. unnecessary to remove the entire lead pro-I pelling mechanism'to refill the pencil, but

by separatingthe inner or operating mein@ ygra-gement to one part of said propelling means in a manner to hold the parts as a unit in or out of said casing, and permit separation of the parts from each other.

2. A pencil comprising a casing, a separable lead propelling means spaced from saidcasing to form a lead maga-zine about said propelling means, a magazine closure 'secured to one member of said propelling means, an operating head secured to another member of said propellingl means, and 'a connecting member forming an` extension of said closure adapted to secure thevmeml bers of said propelling means together.

3. A pencil including a casing, a lead propeiling means *formed of sections removable selectively or collectively from said casing, and means adapted to lock the sections ol said propelling means together, exposed at the rear end of said casing between the rear ends vof the lead propelling sections.

4. A pencil including a casing, a sectional lead propelling unit, means for holding said unit collectively within said casing,- an operating head and means interposed and eX- posed between said unit holding means and said head, adapted to separably lock the sections of said unit together.

5. A connecting means for the sections of a mechanical pencil having a separable lead propelling unit including a closure collar secured to the outer section of said unit, and a collar inseparably connected to said closure .adapted to engage the inner section of said unit to hold the sections operatively together and separable Jfrom each other.

6. vA connecting means lorv a separable lead propelling mechanism of a mechanical pencil, comprising a member inseparably secured to one` portion of said propelling mechanism adapted "to rele'asably engage the other portion of said propelling mechanism to hold the portions freely rotatable in operating position.

7. A mechanical pencil, having a casing, a lead propelling unit formed of separable sections adapted to be enclosed in said casing, means for spacing said propelling unit from said casing to form a magazine space thereabout about said propelling unit, a closure for the mazagine, a sleeve extending from and secured to said closure adapted to hold the operating sections ol said unit in position in said pencil. v I

8. A pencil including a casing, a removable sectional lead propelling means, and a sleeve extending from the rear of said pencil and interposed between said casing and the operating end of said propelling means adapted to secure the sections of said propelling` means together for operation and to permit the parts to be removed collectively or selectively from said casing.

9. A pencil comprising a casing, a sec tional lead propelling unit, and means for collectively and selectively securing The sec.

tions of said propelling unitv'vithin said casing, said securing means extending from the rear end of said casing.

10. A pencil having a sectional lead propelling unit, a casing for enclosing saidY unit, means at the rear of said casing for securing said unit in said casing with its sections collectively or selectively removable, an eraser recess in one of the sections, and a cap adapted to form the operating head for said unit and to conceal the eraser.

11. A pencil comprising a casing, a

threaded member means fixed to the ends Aof said threaded member adapted to space it in said casing to form a circular magazlne thereabout, said spacing means on the outer end of said threaded member being adapted to detachably secure said threaded member in said casing, an operating member, having a lead carrier, adapted to extend through said threaded member, an engaging head formed on said operating member, an eraser recess formed on said engaging head, a cap adapted to removably engage said head to conceal the eraser, and a locking sleeve adapted to engage said hea'd, secured to said rear spacing means on said threaded member.

12. A pencil including, a sectional lead propelling means, a casing for enclosing said propellin means, and means secured to one of the sections adapted to secure the sections in said casing selectively and collectively removable, said means forming an extension of said easing and adapted to be engaged to remove the sections.

HOWARD L. FISCHER,