US1368262A - johnson - Google Patents

Description

C. N. JOHNSON.

PENCIL.

APPLICATION FILEDVOCT-ZQ, 1919.-

" Patented Feb. 15,1921.

N-VENTUR' UNITED, smi es? PATIENT OFFICE.

CLIFFORD N. JOHNSON, 0F TOLEDO, OHIO, ASSIGNOR TO THE CONKLIN PEN MANU- l FAGTURINGCOMPANY, or TOLEDO. 0310, A CORPORATION or 01110.

PENCIL.

7 Specification o f Letters Patent. 7 Patentd F b; 15 192 Applicati on filed October29, 1919. Serial No. 334,109. i 1

To all whom it may concern.

Be it known that I, CLIFFORD N. J oH soN,

a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a certain newand useful Pencil; and I do hereby declare the following to be a full, clear, and exact:

description of the invention, such as will enable others skilled in theart towhichit' appertains to make and use the same, reference being-had to the accompanying draw ings, and to the characters of reference marked thereon, which form a part of'this specification.

This invention relates to pencils of the" lead feeding type, and has for its object to provide certain improvements therein whereby to enhance the practicability and commercial value thereof.

The invention is fully described the, following specification, and while, in its with parts infull. Fig. 3 is a cross-section on the line 3-3 in Fig. 2. "Fig. liS a plan view ofthe spidermember disposed in the rear end of theypencil barrel. ig. 5'isa perspective v ew of 'theferrule member'ab tached to the rear endof the spiral tube,

and Fig. 6 is a fragmentary side view, partially in central longitudinal section, of the lead receiving and feeding means.

Referring to the drawlngs, 11 deslgnates the barrel of'the pencil'which barrel is tubu lar in cross-section in" the present instance,

and is fixed at its inner or forward'endand.

has a collar or bushing 2 inserted within and rigidly secured to its inner orforward end with the outer end. of the collar prof jecting a short distance therefrom; The

tapered tip member 3 efthe pencil isj ro-" tatably mounted at its inner end on the projecting end of the collar or buslnng 2 to permit a relative turning of the barrel and tip as is customary in pencils of this type. The lead feeding tube 4.1sfixed at its forward or outer end to the contracted forward end of thetipB and projects rear wardly therefrom centrally through the tip of a pencil em- 7 latter, and terminates at its rear end ad acent to the rear end of the barrel 1.

A spiral tube 5, of the type customarily employed in pencils of this character, is disposed within the barrel land is fixedly con-' nectedthereto for turning movements there- 'with throughthe medium of the collar 2, the spiral tube in the present instance bemg fixed at its forward end in an enlarged portlonof the opening of the collar 2. The spiral tube 5 encircles the lead feed tube 4 for free turning movements relative there to and terminates at its rear end short of the rear end of the feed tube 4, as shown.

I Atubu'lar ferrule member 6 is fixed to and projects rearwardly from the rear end of the spiral tube 5, being of suitable size to fit over said tube, and has its rear end contracted and formed with a terminal nipple 7'into which a stem 8 fits and is rigidly secured by soldering, welding or any other suitable manner. The'rear end of the feed tube 4 has a pair of cylindrical nuts 9 threaded on its rear end without the tube 5 and within the enlarged portionof the ferrule 6 to. cooperate with the ferrule to rocooperate with the adjacent end of the spiral tube" 5 to preventa withdrawal of the tube 4 from the tube 5. Two nuts 9 are emposition. It is preferable to project the stem 'tatably center the feed tube therein and to v 8 a sufiicient distance into the ferrule to abut against the end of the tube 4 to oppose a rearward end thrust thereof.

A tube 10 of longitudinally corrugated form' is loosely inserted in the annular space between the barrel 1 and spiral tube 5 and cooperates with the barrel to form a magaof which maybe inserted in each of the pockets formed by the external recesses or corrugations of the tube. The tube 10 is retained within the .barrel by a collar 12 of spiderform, which is threaded on the stem within the barrel; The spaces between the arms of the spider 12 are intended to regis 'ter with the spaces or pockets in the magazinefor holding a plurality of leads 11, one

and collar 2, having a turning fit in the Zine tube in whichthe leads are disposed,

thus enabling the leads to be readily inserted into or moved from the magazine without removing the collar. The enlarged portion of the ferrule 6 is provided with a plurality of longitudinal slots 13 positioned to receive the inwardly projecting edge portions of the magazine tube so that the magazine and ferrule are prevented from relative turning movements. This also enables a magazine tube, having corrugations of greater depth than the space between the ferrule 6 and barrel 1, to be employed.

It is evident that the ferrule 6 and stem 8 form a ournal for the rear end of the spiral tube and a bearing for the inner tube 4,

and that the member 12 centers said journal relative to'thebarrel 1 or cooperates with the ferrule and stem to form a means for centering the tubes 4: and 5 at their rear ends within the barrel and carrying them for relative rotary movements.

A cap 14 is screwed onto the outer end of the stem Swithout the spider 12 and against the rear end of the barrel 1, thus serving to close the openings in the spider and access to the leads in the magazine.

The lead feeding and retracting means employed is similar to that used in pencils of this type and includes a plunger member 15, which is mounted for reciprocatory movements in the feed tube a and is located at its forward end to permit the rear end of a lead to be fitted therein. A stud 16 projects transversely from the plunger through a longitudinal slot 17 in a side of the feed tube 4 and thence into the spiral slot 18 formed in the tube 5. It is thus evident that upon a relative turning of the barrel l and tip 3 the tubes 4 and 5 will have corresponding relative turning movements imparted thereto thereby causing the spiral tube to impart either a lead feeding or retracting movement to the plunger lodepending on the direction of relative turning of the tubes. The barrel 1, tip 3 and tubes l and 5 are retained in assembled relation by reason of the rear end of the tube 1 being provided with a shoulder, which, in the present instance, is formed by the nuts 9, that is rot'atably'mounted and centered in the terrule 6 and in end abutment with the rear end or the spiral tube '5.

The ferrule 6 is not soldered or otherwise fixedly secured to the rear end or the tube 5 until the proper adjustment of the nuts 9 has been effected relative to the tubes 4 and 5 to take up any end play between the two and at the same time permitting free relative turning movement thereof. After such adjustment has been accomplished the terrule 6 is inserted over the rear ends ofthe tubes and fixedly secured by soldering or in any other suitable manner to the rear end of the tube 5.

I wish it understood that my invention is not limited to any specific construction, ar rangement or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit or" the claims.

Having thus described my invention, what I claim as new, and desire to secure by. Let ters Patent, is,

1. In a pencil of'th'e class described, a barrel and a tip mounted for relative rotary 7 movements, a spiral tube disposed within the barrel and fixed thereto, a ferrule fixed to the rear end o'f'said tube, means centering the ferrule in the barrel with a part thereof rei'novably engaged to the latter, a corrugated magazine tube disposed within the barrel in encircling relation to the spiral tube and in in'terengagement with the ferrule to prevent a relative turning of the ferrule and magazine tube, and a lead feed 35 tube 'fixedlyp'rojected from the tip through th'espiraltube and having its rear end j our na'led in "the ferruleand'shouldcred against the rear end of the spiral tube.

2. In ape'ncil of the class described, a barrel and tip mounted for relative rotary movements,a spiral tube disposed withi'nthe barrel and fixed thereto, a ferrule fitting over and fixed to the rear 'e'ndof said tube and having its 'oute'rjen'd reduced and its large portion longitudinally reces ed, a corrugated magazine tube disposed between the barrel and 's'pi'ral tube andlia'ving'theinner portions of as eo'rrug tiens fitting into the recesses of the ferrule top'revent' a relative turning of the ferrule and magazine tube,

'e'ans without the tube for centering the ferrule in the rear end of the barrel, said means havin openings -in register with the lead receiving pockets of the magazine, means for closingsaidopeiiings, and a lead feed tubefifXedtoa-nd projecting rearwardly from theti through the spiral tube and having its rearendj'ournaled in the ferrule and shouldered against'the rear end of the 110 s'pira'l'tu'be I 7 j v I 3. v A pencil the class described, having relatively rotatable barrel and tip members, lead-actuating mechanism, including a spirally-slotted tube 'fixe'd to the barrel and 115 an inner slotted tube fixed to'th'e tip, a j ournal 'for the rear end ofthe spirally slotted tube andcooperating with'said'tube-to form a bearing for the rear end of the inner slotted t'ube, means centering said journal withinthe rearend of the barrel, and amagazine jfor'extra leads disposed between the spirally slotted tube andbarrel.

4L A' pe'ncil ofthe class described, having relatively rotatable barrel and tip members, lead-actuating mechanism, including an inner longitudinally slotted tube fixed to the tip and an outer spirally slotted tube fixed to the barrel, a magazine for extra leads surrounding the outer tube, and means centen ing the rear ends of said tubes within the barrel and carrying them for relative rotary movements and having a part releasably engaging the magazine to prevent a turning thereof relative to said means. i

5. A pencil of the class described, having relatively rotatable barrel and tip members, lead-actuating mechanism, including a longitudinally slotted inner tube fixed to the tip and an outer spirally slotted tube fixed to the barrel, a corrugated magazinefor extra leads surrounding the outer tube within the barrel, a journal on the rear end of the outer tube cooperating with the tube end to form a bearing for the rear end of the inner tube and releasably engaging the magazine to prevent a relative turning thereof, means for centering the journal within the rear end of the barrel and having openings in communication with the lead holding recesses of the magazine.

6. A pencil of the class described, having relatively rotatable barrel and tip members, lead-actuating mechanism disposed therein and including an outer spirally' slotted tube fixed to the barrel and an inner longitudinally slotted tube fixed to the tip and having an end thrust bearing against the rear end of the outer tube, a mag lead-actuating mechanism disposed therein and including an outer spirally slotted tube,

fixed at its forward end to the barrel and an inner longitudinally slotted tube fixed at its 7 forward end to the tip, an outer tube having a journal at its rear end, a magazine having 7 extra leads surrounding the outer tube and engaged to said journal to prevent relative rotation thereof, and a collar threaded on the journal and engaging the rear end of the barrel to center the tubes and the journal therein, said collar having openings in register with the lead receiving pockets ofthe magazine.

o In testimony whereof I have hereunto signed my name to this s ecification.

OLIFFOR N. JOHNSON.

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