US1729165A - Pencil - Google Patents

Description

Spt. 24, 1929. H. FISCHER PENCIL Filed Jan. 16, 1922 Mwmwwwwwmwmwmmmmmmmmm {rE-s rATENT. oFFlcsf Bowman L FISCHER, or s'r. PAUL, miNNEsorA '\l 1 PENCIL Application tiled January-16, 1922. Serial No. 529,753.

My invention relates to a pencil having a simple construction and consistingprimarily in a propelling means which is adapted to be contained wit 5 rel in a manner whereby the operating mechanism can be entirely removed, either collectively or selectively from the casing. The

pencil is designed to use a thin marking lead of a comparatively long length and the prom pelling means is positioned within the casing in amanner to form an annular magazine thereabout so that the body of the propelling means andthe casing together form a suitable circular compartment for .extra l5 marking leads, thus forming a magazine about the propelling mechanism, the contents of which is forced to bel exposed when a por-I tion of` the'propelling' mechanism is withdrawn from the pencil casing, propelling mechanism isremoved in itsl entirety. The sectional lead propelling mechanism provides a construction wherein poi'- tions of the same can be replaced by new parts, or an entirel new operating mechanism can be replaced in the casing, if it is desired. This feature is extremely important, particularly where gold and silver barrels are used, because the mechanism can be replaced by the dealer at any time n :w making 1t necessary to changet the casing which may be of gold or silver. The invention further provides frictional compensating means between the sections of the lead propelling mechanism which provides the necessary friction to prevent free rotation of the parts tutes the lead carrying means in the propelling mechanism.

This invention furtherincludes a spring sleeve lock between the operating parts of in operation -and which consti-- in the pencil casing or baror when' the the lead lpropelling mechanism which allows' the same to be freely operated, but prevents operation of the parts during operation and use of the pencil. l This invention also includes aparticularf ly designed head on the center'portion of the propelling mechanism. which is provided with an annular shoulder to limit the longitudinal movement o f the cap-which conceals the rubber and also provides a rouxghened to the surface which can be engaged by the fingers when the cap is removed.

` In the drawings forming a part of this specification Figure 1 isl an enlarged longitudinal cross sectional view of the pencil.

Flgure 2 is a longitudinal cross section of the pencil barrelor casing'. v

' Figure 3 illustrates one of the sections of the lead propelling mechanism, a pdrtion of which is broken away.

Flgure 4 illustrates' the other section of the lead propelling mechanism.

Figure 5 illustrates a portion of the operating `head which supports the eraser.

F 1gure 6 1s a perspective view of the sp1-mg locking sleeve removed from the head. l

Figure 7 is a perspective view of the lead carrier.

Figure 8 is a perspective viewof the penc1l illustrating theextra marking leads in the vmagazinedistended so that engaged and removed. The drawings illustrate the pencil A havmg a barrel or casing 10 formedof thin tubular material adapted to enclose the lead propelling mechanism B. The casing 1() is formed of any suitable material and is swaged to form a conical writing end 11, which is provided with a lead opening '12 in the apex of approximately the same size as the marking lead to be used inv the pencil. The opening 12 is suiiicientl large to allow the lead to be propelled an repelled therethrough. The inner chamber 13 of the casing 10 is of a smooth contour throughout its length,v while the ,rear3 end is open and threaded at 14.

The lead propelling mechanism B is sectional and made up of the members 15 and 16. The member 15 is formed of thin tubing and is held spaced from the casing by the collar 17, which is secured to its upper end and by the closure collar 18 which is secured to the rear end. v e f The member 15'isprovided with athread 2QY throu hout the greater ortion of its length an the members 17 an 18 are secured ends thereof in any suitable manner.

they can be y III ` provided with an operating head 22 which is `tending 'through the shank 23 of the head 22 formed with a projecting shank 23 having an annular recess 24 and a knurlediinger engaging surface 25. The rear end of the'member 16 is forced into the axial opening ex' to rigidly attach the member 16 to the head. f A spring sleeve 26 of steel or, other suitable material is adapted to'be .positioned'in the recess 24 on the shank 23 between the'shouh Al5 Yder ofthe head .22 and the annular shoulder 27 formed on theshank 23. i

WW----,"lhe member 16 carries the lead driver orA project through the slot 21 yto engage the threads 20'ofv the member15.' The spring. end -30 carries@l lead receiving socket 32 inte carrier 28 which isprovided with spring ends 29 and 30 and is formedwith -teeth 31 which which the buttvend ofthe marking lead l33 is The sprin ends 29 and 30 of the lead carrier 28' hold't rfeethl projecting tion to forma stop in -the `alot 21, thus pre` out of the slot 21 and-after the lead carrier,

28is inserted in thejslot21the' same is closed bythe tongues 34`which are bent into posi- Y ventin the removal`.o f the-'lead carrier 2'8 from t e slot of the 16.

- The-collar 18 is threaded exteriorly at 35 so as to engage with the threads 14 in the barrel 10 and a sleeve36 is rigidly secured to the -35 outer surface of the same metal as the barrel l 10'. If the barrel 1 0 is made of gold then the of the collar 18, which is covered by the sleevev 36, forms the engagingend of the collar so.

locks the member 16 in o erating positionr dowleaainst the projecting. end ofthe mark-v sleeve 36 is also of gold, or of the same material of'which thebarrel ismade. A portion moved from the casin 10.

' IA cylindricalcham r 37 is formed inthe collar 18,'which is ada ted to receive, under sprin tension, the`spr1ng sleeve 26 so as yto lock t e member 16 in operating position in the member V15. While the spring sleeve 26 that the vmember 15 can be disengaged and reextending through Athe mem er 15, it holds the member 16 freely rotatable so that when the head 22 is rotated the teeth 31 which engage the threads 20 will"cau se the lead carrier 28 to move in either direction.V loweven the member 16 ca n readily be removed from the member 15 b en aging the-head 22 landpnlling longitu inalfy on the same until the sprin `sleeve 26 isengages fromI the chamga ed from the threads 20 b unscrewing.` ''he' head 22 is formed with' an eraser receiving recess 38 in which the'eraser 89 is secured.

The cap 40 tubular shank'41 engages the circular which is provided with an oval hea'se2i2 with suicient friction to hold the cap formed with a conica at any time the marking lead'33 4should be,l broken, accidentally, and the, broken particles 40 against free disengagement fromthe'head Y 22. A reinforcing bead 42 is formed about the forward end of the shank 41=-.which engages the cap 40 on the head. This-shoulderA3 prevents the cap'from Abeing jammed too tightthe annular shoulder or ridge 43, formed on I 'the head 22 to limit the inward'movement of 70,

ly upon the head 22. The shank 41 ofthe cap 40 engages the head-22 with suicient friction se that whena longitudinal pull is effected on the cap 40 the memberf16 is withdrawn from the member 15, disen aging the sprin lock 26 from the chamber3 If itis desir to remove the cap 40 from the head 22, the member 16 is partially withdrawn andthe kriurled surface 25 is' enga ed with one hand while the cap 40 is engage with the other to remove the rap, thus making the removal of the cap 4() from the head 22 very easy and eztthe eraser for use.

parts, namely: the threaded member 15 and theoperating member-16. Further, the anf nular lead magazine formed by the casing and threaded member .15 is a very important part of this invention. It willbe readilyv apparent that v/vith this lead magazine the. extra marking leads can always be exposed ging the lclosure or collar 18 fromeasily int rchanged, individually removed' lor re lace by new parte, if desired, withl out c anging-the Its o'uld beborne in mind thatthe'primary features of my pencil are the extreme simplicity of the lead propelling mechanism. `which virtually is composed of'two -main' `In the operation of v.my pencil the marks r i ing 1ead 33 in use is pro lledv or repelled and the mechanism is protgceted ming in' the writing end 11 the rea ainst jamleasable lead carrie 28, the teeth 31 of which readily disengage from the threads 20 by ratcheting over the same when a sharp blow or .more than writing pressure is exerted while the pencil is "held, straight up and or crumbs collect'ln the 'conical vend.\1 ,1 by

removing the operating member 1 6`an`d holding the pencil point up the conical 4surface 45 will cause the particles to be readily discliarged out of the pencil through, the threaded member 15.. In this manner the conical surface 45 functions to cleanlthe barrel of any crumbs or broken articles of lead which might be collected in t e conical end and thus keeps the point of thepencil free of any obstructions and also prevents jammingof the same. i f

v4Heret'ofore mechanical encils/ have been very aptto get out of or er on account of jamming or clogging in the Writing tip and my invention entirely overcomes this undesirable feature.

- including a tubular threaded member,a tu-4k Iclaim:

' 11 A pencil comprising an enclosing casing, a sectional lead propelling mechanism,

bular operating member adapted to extend through said threaded member, ahead se propelling means, a'spring sleeve carried by said operating head, a. chambered member carried" by th'e other member of said propelling means adapted to receive said spring sleeve under tension to hold the parts of` said propelling means against free longitudinal separation, but freely-rotatable.'

'3. A pencilv including ak lead pr`opelli`n g\ means, an operating head on said'means,i an eraser recess, Within said head, a shoulder formed on said head andi a cap adapted tov engage 'said shoulder and concealing said eraser recess and shoulder. f

' 4. A mechanical pencilrhaving a casing, a separable lead propelling mechanism adapted to be contained in said` casing, said propelling mechanismv being composed of two main operating parts,a locking means carried by one ofsaid parts 4adapted to fit into rthe other of said parts `to hold the same rotatable and against free longitud' l separation, the member carrying saidlocki means having an eraser recess, a cap ada ted to cover said recess and member and a s oulder I' adapted to limit the longitudinal movement of said cap'on said member.

5. A mechanical pencil lhaving a casing, a

Y separable lead propellin -mechanism adapted to be contained in sai casing, said propelling mechanism comprising two main parts, a locking means carried by one of saidparts :adapted toV itinto the other of said parts to hold the -parts against free separation, an

eraser recess in the member vcarrying said' locking means, a cap for covering said recess,

and a finger engaging piece formed on the' member having the eraser recess, whereby engagement of the said finger piece allows a firm grip to hold the member While said cap isV re-y moved to expose the eraser;

6. A pencil comprising a casing, a tubular threaded member, a closure head secured to said tubularmember adapted to fix said tubular member in said casing in a manner to form a lead` magazine thereabout, a slotted 'operating member adapted.' to extend through said threaded member, an operatinghead secured to said slotted member, an eraser recess lformed in said head, a shank formed on said head, an annular recess formed 1n said shank,

a nger engaging portion adjacent said recess and a spring sleeve, said annular recess being adapted to receive said spring sleeve which is adapted to engage 1n `said closure head of said threaded' member to hold the operatingmember freely rotatable in said threaded member.

v 7. A pencil comprising a propelling mechanism formed of separable sections, amagazine closure head securedstoon'e section,and an operating head secured to the other section,

said operating head having means formed thereon adapted to carry a spring sleeve, a linger engaging portion formed on said head, an eraser recess formed in' said head, and a cap for covering said recess, said finger engaging portion providing a irmgripping means, While said cap is removed to expose the eraser.

8. A pencil havin a casing, a separable lead propelling mec ansm formed of sections, a magazine closure secured to one' of said sections, an operating head secured to the other of said sections, an eraser recess formed in said operating head, a cap for said head, an annular Ishoulder formed on said head adapted to be concealed by the annular forward edge of said /cap and to limit the inner position of said cap to facilitate the easy -removal of said cap from said head.

9. A mechanical pencil, including a casing, a lead propelling mechanism formed of separable sections, one of said sectonsforming anannular magazine with said casing, an operating head secured to the other section,

a cap adapted to cover the exposed portion ofy saidhead, a shank formed integral with said head, a recess formed in said shank, a spring said recessand a knurled ,finger engaging portion form d on said shank.

10. A sectional mechanical pencil, includ-A ing an operating head, a removable cap for said operating head, an annular shouldei` formed on said head adaptednto engage and lbe concealed by said cspla resilient locking member carried by sai ead, said head being'secured to one of the members of the pencil, a collar carried by another of the sections of. the pencil and a recess in said collar adaptedto receive said resilient locking member to hold the saine avainst rotation, allowin the free rotation ofn the operating parts o the' pencil.

locking member adapted tobe positioned in A pencil including a casing, a separable v lead propelling means, comprising an operat-` 'ing member and a tubular threadedY member,

. mechanism is with rawn and the point of the 4 sald operating member ada ted to extend "through said threaded mem er, means for separablylocking said members together and collar means secured to the forward endof said threaded member shaped vto cause any particles Vof broken lead to be readily discharged out of the pencil when the same is l' held point upward and thesaid operating member is removed.- g l 12. A' pencil including a separable saidA propelling meanssliaped to cause particles of-broken lead to be discharged from said pencil when a ortion of said propelling pencillisl held in anupward direction.

13.'A. pencil including a barrel5 a lead l propelling means in' said barrel, an operating head onsaid propelling means, an-annhlar shoulderformed about said head,an` eraser recess' within saidhead and a ca (engaging v and said barrel..

said shoulder and concealing sai eraser recess, shoulder and joint-between said' head 14. A pencil having a barrel, a propelling means in said Lbarrel, an operating head on said propelling means pro]ect1ng from said 4lll) barrel, a shoulder formed on said head and i capA adapted to engage said shoulder and coversaid shoulder and the joint between said head and said barrel.l t HOWARD FISCHER.

lead i propelling mean'sfand collar means associated wit

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