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Publication numberUS1827619 A
Publication typeGrant
Publication dateOct 13, 1931
Filing dateMay 24, 1930
Priority dateMay 24, 1930
Publication numberUS 1827619 A, US 1827619A, US-A-1827619, US1827619 A, US1827619A
InventorsAlbert Raddatz, Fred Schroeder
Original AssigneeSchroeder
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1827619 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

1931. F. SCHROEDERETAL 1,827,519

PENCIL Filed May 24 1930 IN VEN TOR. FfiD SCHFOEDE? ALBERT 17/400/4 TZ Patented Oct. 13, 1931 FRED VSCHROEDER, or wnsrs'r. PAUL, AND


This invention appertains to pencils of the so-called'automatic type and has for one of its primary objects the provision of an automatic pencil which can be collapsed or folded so as to occupy a minimum amount of space in the pocket and'which can be extended to the length of afull size pencil for writing purposes.

Another important object of our invention is the provision of. a collapsible automatic pencil embodying a main barrel section carrying the lead feed mechanism and telescoping barrel or handle sections with novel means for connecting the said sect ons together.

A further object of our invention is the provision of a novel means for advancing the lead in the'main barrel section, said means embodying a minimum number of parts and being positive in operation and permitting the actuation thereof when the pencil is in its collapsed position. I I.

A still further object of OHIiIlVBIltlOIl 1s r to provide a collapsible automatic pencil of the above character, which will be durable and efiicient in use, one that will be simple and easy to manufacture and one which can be placed upon the market at a reasonable cost. 7

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, aswill be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings, in which'drawings:

Figure 1 is a side elevation of our improved pencil showing the same in its collapsed position;

Figure 2 is a longitudinal section through the same taken on the line 2-2 of Figure 1 looking in the direction of the arrows;

Figure 3 is a side elevation of our improved pencil showing the same in its extended form with the closing cap removed;

Figure 4 is a longitudinal section through the pencil taken on the line 14 of Figure 3 looking in the direction of the arrows;

Figure 5 is an enlarged longitudinal section through the forward end of thepencil showing the lead advancing mechanism in the main barrel section;

Figure 6 is a detail transverse section through the main barrel section taken on the line 66 of Figure 5 looking in the direction of the arrows;

Figure 7 is a detail perspective view of the lead advancing mechanism removed from the barrel;

Figure 8 is a detail fragmentary perspective view showing the intermediate barrel section connected with the main barrel section, and

Figure 9 is a detail perspective view of the end barrel section.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter A generally indicates our improved pencil which comprises a main barrel section 10, an intermediate barrel section 11 and an end barrel section 12. The barrel sections 11 and 12 are in the nature of sleeves and the barrel section 11 telescopes within the barrel section 12, while the main barrel section 10 telescopes within the intermediate barrel section 11, forming a compact device when the three barrel sections are in their collapsed condition, as shown in Figures 1 and 2 of the drawings. When the sections are extended a full sized pencil is presented, as shown in Figures 3 and 4 of the drawings. The sections are connected together by means of bayonet slot joints and the intermediate barrel section 11 is provided with a bayonet slot 13 while the end barrel section is provided with a similar bayonet slot 14. The slots 13 and 14 open out through the rear ends of the sleeve or barrel sections and have their angular portions arranged innermost. The main barrel section 10 carries a radially extending pin 15 and the sleeve or intermediate barrel section 11 is slipped over the forward end of the main barrel section 10 with the pin 15 in the bayonet slot 13. The rear end of the intermediate section 11 carries a pin 16 and the end barrel section 12 is slipped over the forward end of the main and intermediate barrel sections with the pin 16 in the slot 14. When the end barrel section 12 is slipped over the intermediate barrel section 11, the outward movement thereof is limited by the pin 16 and this section closes the bayol land holds the various sections in their .net slot 13 and forms means for limiting the sliding movement of the pin 15 in the bayo- 'net slot 13. The outer end or rear end o-f the end barrel section 12 receives a threaded closure cap 17 which closes the bayonet slot assembled "position; againstaccident'al' withdrawal one from the. other.

The main barrel section 10 carries a novel mechanism 20 for advancing the lead andthis mechanism will nowbe described. It is to be noted that the forwardend: of'the main barrel [section 10 iscontracted as at. 18 and forms a guide outlet 19 for. the lead 21 The opposite end. of. the main barrel section 10 is :open. andthisibarrel is provided with internal. threads 22 substantially throughout 1 itsentire length. Threaded into the barrel 10. is. the carrier 23 for the. lead: 21 and this 2 carrier includesa cylindrical threaded base 2 1 and a sleeve 25 which can be of any construction to frictionally. hold the lead 21. Theibase 24:"Of the lead carrier 23 is provided with a slot 26which slidably receives a'flat opera-ting rod 27 formed on or securedto the.

disk. 28. This diskis. keyed 'or. otherwise secured to an operating shaft: 29. rotatably mountedin a closing. plug 30 threaded into the inner end of the barrel. The outer. endofftheshaft29 is provided witha manipulating. thumb-piecefil for. facilitating. the turn.- ingof the shaft. It can be seen that. when the thumb piece. isturned, the operating rod. 27 will'be-turned therewith, .thus. turningthe lead carrier v23 which'willthread the. same forwardly or rearwardly of the barrel according. to the directionin which the'thumb piece isturned; Y v

In operation of the mechanism the thumb piece 31 is turned so .asto advancethe-carrier. 23'to thecontractedend 18 ofthe mainbarrel 10 and the. lead 21 is insertedv therein. The thumb piece-31 is now turned the reverse direction untilijust sufficient lead is protruding.

from the-barrel for writing purposes. It is obvious that this thumb piece can nowbe turned to advance the lead as the. same is used.

When the pencil isin its collapsed condition a closure cap 32 can be providedfor the front end thereof so as to complete. the pencil and to "protect the lead against breakage. When it is desired to advance the lead',.it is merely necessaryto collapse the pencil, as shown in Figure 2ofthedrawii1gs, and then remove the closure cap 17' whereupon. the 'thumbipiece 31: can be readily grasped for mu.

turning. in either direction.

Wheniit is desired to extend thepencil, the section 12 is pulled. outward. and; when the." same reaches its limit. of sliding move.- ment. the same. willipull out on. the. intermediate section 11..- Thesesections are' then turned so as to position the pins 15 and 16 in the angular portions ofthe bayonet slots 13 and 14. When. it is desired to again collapse the pencil," the sections are again turned until the'pins aline with the elongated portions of the bayonet slots and the sections are then pushed i'nwardluntil the same assume their coll apsjed'fposition.

Changes in'details may be made without departing from. the spirit .orsthev scopeof this invention, but 1 WVhat we claim as new is:

1. An automatic collapsible pencil comprising a nainbarrel section, an intermedi-- ate barrel section, and an end barrelsection,

the main; barrel. section telescoping: within the intermediate barrelsectiomandthe:intermediate barrel. section: telescopin within the. end barreli section, the intermediate, and

end? barrel" sections" being.v provided with longitudinally extending. bayonetslots open.- ing out through; the outer ends thereof, means carried respectively. by themainbarrel; section. and the intermediate? barrel. sec

'tion. for engaging in; saidl bayonet. slots, the

end. barrel section forming astop. for the bayonet slot inv the intermediate barrel sec.- tion, and .a closure cap for the end barrel section forming astop. for thefbayonet slot ofsaidend section.

2. Inanautomatic pencil, a barrel having its forward. end contracted to provide-a lead guide opening-and its, rear'end open, the barrel; being internally threaded substantially throughout its entire length, a lead carrier in. said. barrel including a threaded baseengaging said threads and a sleeve for receiving. the lead, the basehaving; a slot therein, a closure plug; for the rear end of tures.


afli x our signa-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3174461 *May 2, 1963Mar 23, 1965Joseph B PompaMiniaturized extensible and retractable pen
US3759622 *Aug 10, 1971Sep 18, 1973N MiyamotoWriting instrument
US6273627 *Oct 16, 2000Aug 14, 2001A.T.X. International, Inc.Expandable writing instrument
US6921225 *Nov 2, 2004Jul 26, 2005Yung-Ching HsuStructure of a ballpoint pen with extensible closing top
WO2013101558A1 *Dec 18, 2012Jul 4, 2013Parker Pen ProductsMagnetic-mechanical connection assembly and writing instrument comprising same
U.S. Classification401/62, 401/98, 401/75, 401/95
International ClassificationB43K21/00, B43K21/08
Cooperative ClassificationB43K21/08
European ClassificationB43K21/08