US1430970A - A corposatiost - Google Patents

Description

H. L. FISCHER.

PENCIL.

APPLICATION FILED JULY 2,1920.

1,4k30,970; Patented 0st. 3, 1922.

Patented Oct. 3, 1922.

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- ST, PAUL, ivrrnnnso'ra n ootaronnrmn' on 'irrnn'nsorn.

PENCIL. v

Application filed Julyfl, 1920. Serial 1%. 393,681.

To all whom it may concern:

Be it known that I, l-lowann L. Freer-me, a citizen of the United States oi America, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Fencils, of which the following is a specification.

My invention relates to pencils, the primary object of which is to provide a pencil with a sectional lead-propelling means removably held in the pencil casing to allow thedift'erent sections of the pencil to be removed independently.

A further object of the invention is in means whereby the entire contents of the magazine can bewithdrawn and to leave the pencil casing entirely empty when the lead propelling mechanism in its entirety is with drawn from the casing.

The invention further provides means whereby the lead-prope].ling mechanism cooperates with the pencil casing to form a magazine for extra marking leads giving a pencil oi :rtremely simple construction. and wherein only a small number of parts are required.

i a It is also an object of the invention to provide frictional resilient means between the sections of the lead-propelling means to hold. the same against free movement and to take up the wear of the operating parts so that a uniform contact is provided between the parts.

In the drawings specification Figure 1 is my pencil Figure 2 is a perspective view illustrating the extra marking leads distended from the magazine when the same is opened Figure 3 is a perspective view of the operatingsection of the pro oellingmeans;

Figure 4 is a perspective view of the threaded section of the propelling meana Figure 5 is a cross section on the line VV of Figure 1,

Figure 6 is a detail of the forward. end oftheoperating section illustrating an alternative form,

Figure 7 is a perspective view 01 thelead carrier.

In the drawing the pencil A is provided with acasing 10 having a forward conical. end 11 with an opening 12, at the apex of forming a part of the a side sectional elevation oi? the same through which the marking lead 13 extends when in writing position.

The casing 10 is formed of thin tubing and houses the lead-propelling mechanism B which is made up of the sectional members let and 15. The member i l is formed of thin tubing and is spaced from the casino 1O bythe washer collar 16 attached to thl e forward or inner end oi the member 14 while the rear end of the member 1a is connected detachably with the casing by the closure head 17. Each of the meinbers 16 and 17 are rigidly attached in a suitable manner to the member 14;.

The member 14: is threaded througl iout its length, the threads 18 being formed therein by rolling or otherwise so as to form thread-pii'ojections on the inner surface of the member 14L. i

The member is tubular and is formed with a longitudinal slot 19. An operating head 20 is rigidly attached to the rear end oi the member 15, said member carrying the lead-carrier 21 which is :Eorn'ied with. aleadreceiving socket on its forward end adapted to receive the butt end of the mar-lo ing lea (113 while a spring tongue or arm 23 is formed projecting from the rear end of the carrier 21, the lead-carrier is held against disengagement from the slot 1.9 by the shoulder formed on the forward end oi the member 15. The member 15 together with the lead carrier 21 is similar in construction and lunction to the member. 16 and leadrarrier 155 in my patent application Fierial No. 891.409 filed June 24:, 19:20.

Lead-propelling mechanism being composed of the members 14 and 1.5, when put together appears in the assembled position as illustrated. in Figure 1. lln this position the member 15 extends through the threaded member ll, the. member 15 engaging the threads 18 of the member 14 "frictionally and the lead-carrier 21 forming frictional resilient means betweenthe members 14; and 15, the notches or threads 25 formed in the carrier 21 engage the threads 18 of the member 1n the assembled position of the leadpropelling mechanism longitudinal slot 19 allows the member 15 to be withdrawn from the member 14: to determine the remaining unused lead in the pencil A as illustrated in dotted outline in Figure 1. The lead-earrier 21 forms a stop to limit withdrawing or longitudinal movement of the member 15. by engaging withthe shoulder 24.

The lead-carrier 21 can be forced to slide longitudinally of the member 14 and in the I member 15 when more than writing pressure is exerted against the marking lead 13 to release the same into the casing 10 to pro tect the marking lead against being broken when the pencil falls on the point or if otherwise struck on the writing point. When the carrier 21 is slid over the threads 18 it 17 rigidly attaches the member 14 against rotation in the casing 10 and closes the rear endof the magazine 26 formed about the propelling mechanism B.

The sections 14 and 1 5 of the lead-proellin mechanism are se arable as illus- P e P tratedby Figures 3.and 4, thus the operating member 15 can be withdrawn and separated from the member 14 without opening or disengaging the magazine member 14.

.This is an important feature of the invention as it protectsthe marking leads against falling out of the pencil when the member 15 is partly withdrawn from the member 14, and a separate closure 17 is provided for the rear end of the magazine. When an extra or new marking lead is dc-' sired, the closure 17 1s disengaged from the rear end of the pencil casing and the member "tpa tialy withdrawn from the casing, to distend the extra marking leads 27 so they can be easily engaged and removed from the magazine.) By entirely withdrawing the op erating mechanism B or the member 14 from the casing 10, .the entire contents of the magazine is removed from the pencil casing... I

Figurefi illustrates an enlarged detail of the forward end of the member 15. The spring fingers v28 are formed integral with the member 15 and are adapted to engage against: the outer surface of the washer 16 to hold amember 15 in additionto the frictional engagementbetween the members 14 and 15 so as to prevent free longitudinal movement of the same but allowing a separation of the members 14 and 15 when it is desired.

What I claim as new is 1. In a pencil, a casing having an opening adjacent the writingpoint, and a removable lead-carrying unit formed of detachable sections, one of said sections being adapted tocooperatewith the casing to form a leadcarrying compartment, the other seetion cooperating with the first section to present a lead through said opening at the writing point at will.

2. In a pencil, a casing having an opening adjacent the Writing point, and a removable lead-carrying unit formed of separable sections, one of said sections being adapted to cooperate with the casing to form a circular lead-carrying compartment, the other section cooperating with the first section to propel and repel a lead in said unit and pencil.

3. In a pencil, a casing, and a lead carrying unit formed of sections, one of said sections being adapted to cooperate with the casing to form a lead carrying compartment, the other section being operative to present a lead at the writing point of the casing, said sections being removable from said casing collectively and selectively.

4. In a pencil, a casing, and a lead operating unit formed of sections normally held in said casing, said sections being removable from the casing selectively and collectively.

5. In a pencil, a casing having an opening adjacent the writing point, and a sectional lead-carrying unit, one of said sections being adapted to cooperate with the casing to form a lead-carrying compartment, the other section being operative to present a lead through said opening, said sections being removable from the casing collectively, said latter section being removable independently of the first section.

6. In a mechanical pencil, a casing. a removable sectional lead operating unit and means for releasably locking the sections of the unit against relative longitudinal movement to each other.

7. In a pencil, a casing having an opening adjacent the writing point, and a Sec-Q tional lead-carrying unit, forming a leadpropelling mechanism, one of said sections cooperating with the casing to form a leadcarrying compartment and having a closure for said compartment on its rear end and the other of said sections being independently separable from said casing without opening said lead compartment, said last section forming the operating means for said propelling mechanism, and adapted to carry the marking lead in writing position in said pencil.

8. In a pencil, a casing, a removable sectional lead operating unit, means for separably locking the sections of the unit against relative longitudinal movement to each other and means for locking the unit in said casing.

9. In a pencil, including a lead-propelling means comprising a removable tubular threaded member, a removable tubular operating member extending into said threaded member and separable therefrom and a lead carrier adapted to be operated by said operating member.

10. In a pencil, including a removable lead-propelling means, comprising a tubular threaded element detachably connected to the body of said pencil, a tubular longitudi nally slotted element rotatably and longitudinally slidable in said threaded element and a lead-carrier adapted to travel in said slotted element and to form frictional spring contact between said threaded element and said slotted element to prevent iree rotary or longitudinal movement of the same, said tubular slotted element being detachable in,- dependently from said threaded element.

11. In a pencil, a barrel, a threaded tubular member having a shoulder on one end freely contacting with the inner surface of said barrel, attaching means on the other end, to secure said threaded member against rotation through said barrel with a space forming a magazine about said threaded member, a tubular operating member detachably, rotatably and longitudinally slidable in said threaded member, and lead carrying means adapted to resiliently con nect said threaded and operating member to form frictional holding means between the same and a stop to limit longitudinal movement of said operating member.

12. In a pencil, including a removable and separable leadpropelling means, portion of said propelling means being adapted to cooperate with the pencil body to term a magazine about said propelling means, the operating member of said propelling means extending axially in said pencil being rotatably or longitudinally movable and separable without opening the magazine.

13. In a pencil, a casing having a forward conical end, and a rear open end, a tubular threaded member having a spacing washer on its forward end, and a closure attaching means on its other end, said tubular threaded member cooperating with said casing to form a lead magazine and attached to said casing at its rear open end by said closure, said threaded member being adapted to withdraw and expose marking leads held in said magazine when the same is withdrawn from said casing, and an operating member adapted to extend axially through said threaded member and detachably connected therewith to hold the marking lead in writing position in said pencil.

141-. In a pencil, having a casing, a sectional lead-operating unit adapted to be en closed in said casing, one at said sections being adapted to cooperate with the casing to form a lead compartment having a closure on its rear end adapted to attach said section to said casing and the other of said sections of said operating unit being inde pendently separable from the first section to insert a new marking lead in marking position in said last-named section without opening the lead compartment.

15. In a pencil, including a barrel, a removable lead-propelling means the outer wall of which forms the inner wall of a magazine about said propelling means, the rear end of the inner wall of the magazine forming a closure for the same, actuating means extending through the magazine closure detachably secured by spring tension and extending axially in said pencil, a magazine closure adapted to detachably engagethe inner wall of the magazine of said barrel to open the magazine and project the marking leads from the rear end when the magazine is opened.

16. A pencil, a casing, a removable lead operating unit formed of separable sections positioned in said casing to form a magazine thereabout, adapted to project the leads in the magazine out of the rear end thereof when said unit is partially withdrawn, and a resilient lead carrier adapted to form spring tension between said sections.

17. In a pencil, having a lead-propelling means detachable from the casing 01'? said pencil, attaching and spacing means at tached to said propelling means to form a magazine space about said propelling means in the pencil casing, 'an operating member extending axially through said propelling means and independently separable there from, said propelling means exposing the contents in the magazine and leaving the casing of the pencil. entirely empty when the same is withdrawn therefrom.

18. In a mechanical pencil, a casing, a

lead propelling mechanism formed of sepa-.

rable sections, means for holding said sections collectively in or out of said casing and compensating means adapted to term a uniform tension between said sections and to term the lead carrier for said pencil.

In testimony whereof I aiiix my signature.

HOWARD L. FISCHER.

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