US1495689A - Pencil - Google Patents

Description

May 27, 1924.

H. s. HAs'sELQUlsT PENCIL Filed July 24; 1920 ParentalA May 27,1924.

uNiTED STA TES ifiir'isia'i ori-fica.

HUGO S. HASSELQUIST, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO AUTOPOINT MANUFACTURING COMPANY, 0F CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

' rENcIL.

Application led July 24, 1920. Serial No. 398,765.

Improvements in Pencils, of which the following is a specification. This invention relates to a pencil equipped with propelling mechanism interiorly of itsl body, and operable by means exterioily thereof, for advancing into operative' position a lead at one end, and an eraser at the other. In many respects the present pencil follows the constructions already disclosed.'

in certain applications of Charles R. Kee'ran now pending as Serial Nos. 213,241, et al.; it exhibits, however, vcertain improvements of my own which have to do particularly with details of manufactureand assembly.

- eraser end up It is` to -be understood, therefore, that the present pencil embodies a number of the features claimed in the applications aforesaid, as well as certain other improvements to which specic reference will hereinafter be made.

` In the accompanying drawing an exemplification of this invention is shown in the manner following:

Figure 1 is a longitudinal section through the pencil body which may be formed of some such material as wood, the` interior parts being shown in elevation; Fig. 2 vis an enlarged longitudinal section through the upper portion'of the pencil, the parts'interiorly of the body being represented mostly in elevation; and `Figs. 3, 4 and 5 are transverse sectionstaken, respectively, on lines 3-3, 4-4 and 5-5 of Fig. 2.

In the use that-is herein made' of the terms upper and lower, it should be understood that I am referring to the pencil as it is pointed in use-that is, with the and the writing end down.

In Fig. 1, the pencil body, designated as A, is represented as having a lower end 6 which terminates bluntly in the form of a truncated cone. Arranged within. an axial bore in the body is a tube 7 that is deformed throughout its lower portion 8 to present a cross section other than round. As shown in Fig.. 5, for example, the deformation of the tube may be such as to provide, in effect, A four fluted Walls. At its lower extremity 9 this tube may be reduced to fit within a combined ferrule and tip 10, screw threads being suggested" as a convenient means for connecting the one part to the other. By

forming the sides of the ferrule to align in flush relation with the tapered walls of the pencil, as shown, a smooth and neat appearance is presented. Within the tip end of the ferriile is an axial bore 11 whose walls are suitably constricted to frictionally engage with a lead B that is projected for use.

Interiorly of the pencil body may be arranged a number of slots 12 disposed radially of the bore containing the tube 7, these slots extending longitudinally of the pencil from its upper end downwardly for a desired distance to constitute chambers in each of which a reserve lead C may be accommodated. Attached to the upper end of the pencil is a 4cap 13 provided with a central aperture from which radiate slots 14 which are in register with the body slots 12 to thereby preserve open th'epassage into each reserve lead chamber. rDepending from the cap is a circular wall 15, exteriorly threaded, and offset as at 16 to provide a shoulder below which is a lower circular,

Wall 17 which may be interiorly serrated or otherwise formed to fit nonrotatably upon the upper end of the pencil which ispreferably reduced sufficiently toY permit the cap walls 17 to lie flush therewith. The cap may be received in position with the upper end of the tube 7 extended through its cen tral opening, the extremity of the tube being then upset or spun out, as at 18, to overlie the cap to thereby lock it in place.

The means for propelling a lead through the pencil may be of any suitable kind. As

shown inthe drawing, it is `preferred to use an operating sleeve 19 telescoped Within the tube 7 for, perhaps, half` its length, the lower end of the sleeve being formed with interior threads 20 which engage with the body of a threaded plunger 21 which isvilattened out at onel placev near its lowerv end to provide, in effect, a pair of laterally extending ins- 22. Under normal operating conditions, the lower end of the plunger is disposed within the deformed portion 8 of the tube, as shown in Fig. 2, wherein the fins act to prevent rotation of the plunger relative thereto. The plunger being free to move longitudinally, but not otherwise, it may be propelled by rotating the operating sleeve19 through" means presently to be de.

scribed so as. to project a lead B, as desired,

. may be titi ' als@ provided by the .propelling mechanism for the lead is of relatively minor importance to this invention, and may be varied, if desired, further explanation thereof is not deemed essential.

'lhe features of improvement that are novel to this invention are associated with the operating sleeve 19 for the purpose of roviding a rotating means therefor. Reerring now to Fig. 2, l have shown a collar 23 whose lower end is nteriorly threaded as at 24 to connect with the cap walls l5, `the collar being extended upwardly a desired distance and having an interior annular groove 25 within which may seat a split ring 26 preferably formed of spring material. Arranged to rotate freely upon the collar is a sleeve 27 whose upper end may be inturned as at 28 to frictionally engage with an eraser 29 that is adapted to be received within the sleeve. A means is provided for connecting the collar and eraser sleeve and forestablishinl rotative continuity between the eraser seeve and the propeiling sleeve, this means comprising a bushing 30 which may be formed with upwardly extending walls 3l that are lpreferably corrugated or grooved exteriorl'y, as at 32, so as to `engage non-rotatablyA with the eraser sleeve. ln the manufacture of these parts the walls 3l may be initially grooved or corrugated 4and thefter be driven to a tight tit within the sleeve, this movement of the one part relative to the other acting to form in the sleeve walls grooves or corrugations that are complementarv to those in the bushing. Exteriorly of the bushing is an annular groove 321 adapted to register with the groove 25 that is formed in the collar, the split ring 26 being disposed within both grooiies simultaneously. 'lhe bushing is further formed with an' axial opening 33 within' which is' received the upper end of the operating sleeve, anda stop. for the sleeve is turning inwardly, as at 3d, the walls of the bushing adjacent the upper end of its opening. llhen the parts are formed and related in this manner, the operating sleeve may be permanently oonnected to the bushing'as by means of solder 35 which is applied u on the under side of the bushing, preferab y within a slight annular bevel or groove 36, as shown.

According to this invention, the parts may be formed. inexpensivel and be assembled ,very expeditiously. e operating fsleeve is received within the bushing only to the distance that d is deteined by the stop 3ft, following which'the soldering operation movably together. The .bing may like wise be secured to the sleeve by a drive ht,

performed to secure these lpartsimthem in a freely rotate manner, said meniineaeee as already explained, so that these parte-.

the eraser sleeve, the bushing, and the operating sleeve-are maintained together in unitary relation. Thereafter the may be assembled upon the collar throng the meduim of the split ring 26 which provides a freel rotatably, but inseparable, connection. 'lhe collar in these circumstances operates merely as a medium for connecting the eraser sleeve, together with its associated parts, to the pencil body.

Within the eraser sleeve may be poeltioned a plate 37 in abutting relation to the bottom end of the eraser. Whenever desired, the eraser sleeve may be rotated in the direction requisite for. propelling the plunger in an upward direction so as to project its upper end against the plate 37 to thereby advance the eraser within its sleeve. ln Fig. 2, the upper end of the plunger is shown close to the plate in'the position that it would occupy gust preliminary to advancing the eraser. lt is thus apparent that this construction permits the parts herein described to operate as a means for advancing the eraser, as well as for advancing a lead.

l claim:-

l. A pencil having within its body a lead propellin mechanism with which is lixedly f cured in a freely rotatable relation to the collar, the bushing being provided with erterior corrugations adapted to enter grooves formed interiorl of the sleeve when the bushing isforce to a drive lit therewithin,

whereby the bushing and' sleeve are insep-x arably interlocked, the bushing being also connected lixedly with the lead propelling mechanism whereby the sleeve may serve as an operating means therefor, substantially as described.

2. A pencil having withinits body a lead propellin mechanism with which is hxedly associate an oper t unit therefor arranged exteriorly o the pencil body, the operating unit including one rotatable part with which is inseparably connected a collar having a detachable connection with the body, and a connection between the collar and the rotatable part comprising a member formed independently of each having a fast and inseparable connection with the rotatable part and a loose connection with the collar, the latter connection consisting of two grooves one formed in the member and the .other inithe-collar, within both of which is seated a resilient device adapted to connect ber also having' a fast and inseparable conlll iro

nection with the lead propelling mechanism, substantially as described.

3. A device having an interior lead propelling mechanism with which is fixedly associated an exterior 'operating unit comprising a collar and a sleeve arranged-end to end in inseparable relation, and a bushing connected inseparably to the collar and sleeve .and fast to one and loose to the other, the

loose connection consisting of a split ring that is Seated partly within each of two registering grooves, one formed in the bushing and the other in the part that is loosely connected therewith, substantially as described.

Il. A. pencil having Within its body a leadI propelling mechanism and exteriorly of its body an operating unit therefor including one rotatable part, and a coupling element for detachably securing the rotatable part to the bod by a screw thread connection, the means or securing the coupling element to the rotatable part comprising a member carried by the oneand spring pressedinto an annular groove thatis formed inthe other, said means also having an inseparable operating connection with the lead propelling y mechanism, substantially as described.

5. A pencil having in its assembly a lead propelling mechanism with which is tixedly associated an operating unit which includes a rotatable part and a bushing connected fast and inseparably to said part, loosely to the pencil, and operatively to the lead propelling mechanism, the loose connection consisting of a split ring that is seated partly within each of two registering grooves, one

formed in the bushing and the other interiorly of the pencil, substantially as described.

G. A pencil having in its assembly, a lead propelling mechanism with which is lixedly associated an operating unit including a rotatable part, a bushing interiorly thereof having adrive fit therewithin su'ch that the one is maintained in non-rotatable and inseparable relation to the other, and means providing a freely rotatable but inseparable connection between the bushing and the pencil, there being also an operative connection between the bushing and the lead propelling mechanism such that the rotatable part may serve as an operating means for the lead propelling mechanism, substantially l as described.

HUGO S. HASSELQUIST.

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