US1400362A - Charles r - Google Patents

Description

C."R. KEERAN AND M. M. KAUFMANN.

PENClL.

APPLICATION FILED JUNE 9,1919.

Patented Doc. 13, 1921.

Vso

UNITED STATES PATENT OFFICE.

CHARLES R. KEERAN AND MICHAEL M. KAUFMANN, 0F CHICAGO, ILLINOIS, ASSIGNORS, BY MESNE ASSIGNMENTS, TO AUTOPOINT PENCIL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PENCIL.

Application led June 9,

T o @ZZ whom t may concern:

Be it known that we, CHARLES R. KEE- RAN and MICHAEL M. KAUFMANN, both citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pencils, of which the following is a specification.

This invention relates to a pencil equipped with propelling mechanism interiorly of its body, and operable by means eXteriorly thereof, for advancing into operative position a lead at one end, and an eraser at the other.

In many Ways the present pencil is similar to the constructions already disclosed in certain applications now pending as Serial Nos. 213,241, 272,054, and 291,494; it eX.- hibits, however, certain distinct improvements, particularly as to details of manufacture and assembly. It is to be understood, therefore, that the pencil to be herein described embodies many of the features claimed in the applications aforesaid, as well as certain other improvements to which speciiic reference will hereinafter be made.

In the accompanying drawing certain eXempliications of this invention are shown in the manner following:

Figure 1 is a longitudinal section through a pencil whose body is solid, the operating parts being shown in elevation;

Fig. 2 is a similar view through a pencil having a hollow tubular body, the operating parts being shown partly in section;

Fig. 3 is an enlarged detail, in longitudinal section, exhibiting the parts in the upper end of the pencil illustrated in Fig. 1, the propelling plunger being shown as retracted close to its limit;

Figs. 4, 5, and 6 are transverse sections through the pencil, taken respectively on line 4 4 of Fig. 3, line 5-5 of Fig. 2, and line 6-6 of Fig. 3;

Fig. 7 is an elevation of the upper portion of the tube by which the propelling plunger is operated; and

Fig. 8 is a perspective view of the clip, detached from the pencil body.

In the use that is herein made of the terms upper and lower, it should be Specicaton of Letters Patent.

Patented Dec. 13, 1921.

1919. Serial No. 302,757.

understood that we are referring to the pencil as it is pointed in use-that is, with the eraser end up, and the writing end down.

As illustrative of a desirable construction, there is shown in Fig. 1 a pencil having a solid body 11 which is provided with central bore adapted to receive a tube 12 in which propelling mechanism is contained. At the lower extremity of the tube is a tip 13 provided with an axial bore, and arranged to abut a ferrule 14 that caps over the lower end of the pencil body. The bore within the tip is suitably constricted to provide a passage of proper size to frictionally engage a lead A that may be used in the pencil.

`Ihroughout the lower portion of the tube which is non-rotatably secured within the pencil, are one or more internal ribs, preferably in the form of flutings 15. A plunger 16 having a threaded body is arranged for longitudinal travel within the tube, being formed with a lateral iin 17 adapted to lie adjacent one or more of the flutings. In such a construction the plunger is guided non-rotatably, as it travels longitudinally through the pencil, to propel in advance of itself a lead. Cverlying the upper end of the body is a cap 18 having its sides olfset, as shown, to provide an upper part 19 that is externally threaded to receive in flush relation with the body a collar 20; the lower portion 21 of the cap, by preference, lies flush with the collar, and with the body as well, which is suitably recessed for this purpose. The top side of the cap is centrally apertured to receive the upper eX- tremity of the tube 12 whose end may conveniently be upset, or hammered down, or spun out, as at 22, to overlie the cap. It will be noted that through the medium of the ferrule and tip at the lower end, and the cap at the other, the tube is lirmly secured against longitudinal movement within the body.

A magazine is arranged within the pencil which, in the form shown, consists of a plurality of chambers 23, preferably four in number, arranged in radial relation to the tube 12. Each chamber is in the form` of a slot extending from the upper end of the body down for a distance about equal to the length of one or more leads. lllhen the cap 18 is arranged in place, the upper ends of these slots are closed, except lor the openings that are arranged in the cap, one in vregister With each slot to permit reserve leads B to enter and leave the chambers oi! the magazine. l

Means are provided tor locking the cap against rotation relative to the body consisting preferably of a'plurality oil' ribs`24l arranged parallel to the airis of the pencil and projecting interiorly ot the cap into substantial alinernent with the `interior surtace of its upper portion 1.9. rllhese ribs cooperate with complementary grooves or channels 'formed exteriorly ot the pencily body, the relation et the parts being such as to provide an interlock Which positively prevents rotation oit the cap upon the peraY l. Upon the cap so mounted in. place? the c 2O may be threaded. lt Will be noted l the upper end of the collar is returned. provide a tlange 25, Whose upper F ailords a bearing 'for a sleeve 2G in vvl L is retained an eraser 27. llnteriorly or llig. 3. it the lotver'end olf the sleeve is transverse ivall 29 having' central aperH ture troni Whose periphery depends a 80. The shutting' portions oit the collar "nd sleeve are so t'orined that the collar ll 25 will underlie the sleeve Wall the saine time present its inner cent the flange 30 dependiV f.. ein. lly this means the parte are co ctly centered, and permitted to rotate9 ivitl respect to the other.

A connection is provided between the collar 2G and sleeve 26 which, according to the forni shownj consists solely oit a tube 31 `which serves also as the operative connecti1 n between propelling); plunger i6 and its actuating4 nienahe the eraser sleeve. the

lower end oit this tube 31 are interiorly formed threads 32 arranged to cooperate with the threaded body ci the plunger. The ripper end of the tube 3l, however. so terrified as to establish an insefliarable, but tr ely rotatable., connection between the collar 20 and sleeve 26, and also an inseparableS but non-rotatable, connection bevtvveen itsell2 and the eraser sleeve. ,-.hese ends are a, ined by slightly expanding the tube as 9" oo, forming thereon an annular bead B-l: upon Whichniay res Washer 3o,

and reshapingA the Walls above the bead as at 3G.) to talre on cross section that is polygonalj and by this term We mean some torina tion other than round. should be inentioned that the aperture formed Within the transverse Wall 29 and depending flange 30 is also polygonal so as. to cooperate with the 'complementary Walls 36 et the tube 3.1, the effect being to prevent relative rotation beminirnuin oil cost9 as well tween the collar and eraser sleeve. When the parts are related in. this manner, the end of the tube 31 may be upset7 spun out, or otherwise deformed as at 37, to overlie the transverse Wall 29, an annular` groove beinzgr preferably provided to receive the turned ont end of the tube. The use of the Washer l5 which is intended primarily to abut the lower end ot the depending- .tlange 30, prevents binding; between the collar and eraser sleeve, so that these two parts may at all times be freely rotatable one with respect to the other. The connection thus made is inseparable, it answers fully the requirements oit our invention., and represents a certainty in. operation. The collar and eraser sleeve thus Vmaintained in connected relation constitute ior the pencil a head, one elenient whereot serves` the nieans tor detzchably connecting with the pencil body, and the other as the means for actuating throueh the medium of the tube 31j the propelling mechanism Within the pencil.

- irea et., Wi Ann Ae s eeve is a Jian f having; a soclreted boss 39 interiorly threaded L j u o is thereupon helden einst further rotatione continued turning ,noveinent ol the eraser sleeve will then resulty in relative rotation between itsel'l1 and the plate such that the in advance of itself' the eraser.

Reference Will noiv be made to a clip which. is cln'zrarterized by several Yfeatures of novelty. is best shown in llig. 8, this clip is formed with the usualhody portion 4l() having a toot l1 adapted to press against the side 'oil' the pencil, the upper end oit the clip body beingl curved to provide a shoulder portion upon which is carried a head lil on either sideas at de. clip so forrned may heconveniently attached to the pencil of 1 by providing; in the Vall ofi its body iinrnediately beloiv the cap 18 a slit l5 coinrnunieating` with one of the chambers 23 therein, which is also recessed back to the cap Well 21 as shown in Fig. 3; Within such a recess the head of the clip may lie between two of the ribs 28 With its 'tl-anges 44; in abutting; relation. to the tube 12j and in countersunlr relation to the walls et the chamber 23 so as not to obstruct the space thereinl afforded for reserve leads, the shoulder portion .l2 of theV clip lying 'Within the slit L1-5 adjacent the lower edge of the cap Wall 21 to present the clip latter is caused to nieve outwardly to propel Y' lll() body exteriorly of the pencil. It Will be manifest that a clip of such formation when secured to the pencil as explained, Will be immovably held in place, and the manner of its attachment Will also be effectually concealed.

The preceding description has been concerned in large part with a pencil having a relatively solid body, as dietinguished- 'trom a hollow tubular body, such as is generally formed of metal. rlhe pencil may be formed, however, with tubular body such as is X- hibited in Fig. 2, having operating parts in all respects the same as those described in connection with the remaining figures. ficcordingly, the same reference numerals have. been applied to the corresponding parts, and it is unnecessary to specilically advert to them again.

Referring noiv to the construct-ion shown in Fig. 2, the body, designated as G, is tubular in form, being provided with a tapered lovver end 51 having at its extremity a tip 52 Which may conveniently be connected to the tube Within the` body. ln the region Where the taper commences, is a transverse brace plate 53 which atlords a bottom tor the magazine of the pencil, which, by preference, is divided into tour compartments (see Fig. 5) through the use ol suitable partition members. Each ot' these partition niembers may consist ol' radially disposed Walls 54 connected by an arc shaped Wall 55 extending from the upper end oft the pencil down close to the brace plate 5S. ln practice, it is preferred that these partition members should be formed ot :me material that is light, thin, and slightly resilient, such as aluminum, so that they may be sprung into place and be held firmly therein against movement by their oivn spring action. The upper end of the bot y may be capped over, its Walls adjacent thereto boing` preferably inset and threaded as at 56 to receive the pen cil head which is formed in all respects the same as has been described in connection With Fig. 3.

According to our invention certain economies are effected in the manufacture and assembly of this pencil, it being una Jsarv to resort to soldering in any instance or the. purpose et establishing permaent connec tions. All the requirements of present pencil are fully satisned by utilizin,

- this invention which is productive oi? economies both in time and labor.

We claim:

l. A pencil having Within its body lead propelling mechanism, and exteriorly of its body a rotatable. actuating means therefor including a collar and sleeve arranged end to end, the former stationary and the latter rotatable with respect to the body, the adjacent ends ol the collar and sleeve being formed with transverse Walls each having a central aperture, one such Wall being` flanged to lie Within the aperture of the other, and having its inner periphery polygonal in character, and a tube extending through the polygonal aperture of the hanged Wall having its surface adjacent thereto ot like onal formation, the tube Walls adjacent ea i end ot the flanged Wall being outwardly ea:H tended to hold the collar and sleeve in inseparable relation, the tube being extended Within the pencil to maintain operative relation with the propelling mechanism, substantially as described.

2. A pencil having Within its body lead propelling mechanism and actuating means therefor including a sleeve and collar in end to end relation, the former having an inwardly extending flange, and the latter being arranged to detachably connect with the body, and a single means ot connection between the sleeve, collar, and propelling mechanism consisting olf a member having cross section that engages non-rotatably with the sleeve flange, rotatably with the collar, and operatively with the propelling mechanism, the longitudinal conguration of the member being such as to lock the sleeve and collar inseperably together, substantially as described.

3. A pencil having a body at the upper end of Which is a cap Whose cylindrical Walls are provided with inwardly projecting ribs adapted, when iitted upon the pencil, to enter the pencil body to interlock therewith, and a head rotatably mounted on the pencil adapted to actuate lead propelling mechanism interiorly thereof, there being means provided fith a threaded connection for securing the head tothe cap substantially as described.

oi-nlnLns n. nennen. MICHAEL M. KAUFMANN. Witness:

EPHRAIM BANNING.

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