US1959226A - Pencil - Google Patents

Description

E. R. BARANY May 15, 1934.

PENCIL Filed June 10, 1933 ffl Patented May 15, 1934 UNITED STATES PENCIL Edmund R. Barany, North Bergen, N. J., assignor of one-half to Howard M. Morse, New York,

Application June 10, 1933, Serial No. 675,148v

14 Claims.

This invention relates to pencils of the so,

called mechanical type, which are characterized by a lead propelling mechanism by which the lead is projected at the writing end of the pencil and by which such lead may be retracted to a p0 sition wholly within the pencil body or casing when not desiredA for use.

Pencils of the above character have been provided with extra-lead magazines, but this has been made possible only by using comparatively short leads, or by increasing the length and diameter of the pencil or at the sacrice of certain structural features which have been generally adopted in the art because of their recognized merit.

An object of the present invention is to provide a generally improved pencil of the character mentioned, in which the structure is such that it not only makes possible the use of relatively long leads and the provision of an extra-lead magazine for such leads, but is also such that the aforementioned desirable structural features may be included without necessitating either a greater diameter or a greater overall length of the pencil than has been required in the past of mechanical pencils of the short-lead magazine type.

The invention will be understood from the following description, taken in connection with the accompanying drawing, in which- Fig. 1 is a view in elevation of a pencil embodying one form of the invention; Fig. 2 is an enlarged fragmental, longitudinal, central, sectional view of the pencil shown in Fig. 1; Fig. 3 is a transverse, sectional view taken on line 3--3 of 35 Fig. 2, and showing a corrugated driving sleeve conned between the intermediate body section of the pencil and the rotatable lead-screw of the.

lead-propelling mechanism; Fig. 4 is a diagrammatic view illustrating (in a somewhat exaggerated way) the approximate shape of each of the outwardly extending corrugations of the driving sleeve prior to the insertion of the sleeve and the lead-screw of the lead-propelling mechanism in the intermediate section of the pencil casing; Fig. 5 is a view similar to Fig. 1, showing a modified form of the invention in which the pencil casing consists of a single body section; Fig. 6 is an enlarged fragmental, longitudinal, sectional view of the pencil shown in Fig. 5; Fig. 'I is a view, similar to Fig. 6, showing another modied form of the invention, wherein the driving sleeve, although not corrugated, forms with the pencil casing a plurality of lead magazines; Fig. 8 is a fragmental transverse, sectional view taken on line 8-8 of Fig. 7; and Fig. 9 is afragmental,

transverse, sectional view taken on line 9-9 of Fig. 7.

The pencil embodying the present invention which is shown in Figs. 1 to 4 inclusive presents an outward appearance, as will be readily appreciated from the full-size View of Fig. 1, which is identical with many makes of mechanical pencil now on the market, in that its casing includes a pair of relatively rotatable body sections 10 and 11, the latter of which is provided at its end adjacent the section l0 with a decorating and reinforcing band 12, and the former of which is provided with a conventional form of guide 14 through which the pencil lead 15 may be projected and retracted by a standard` form of leadactuating mechanism 16. Said lead-actuating mechanism 16 includes the usual slotted runner tube 17 within which the lead 15 is adapted to be moved longitudinally under the action of a rotatable actuating screw 18, the lead 15 being held 75 or gripped within the tube 17 by a standard form of gripping mechanism, not shown, which cooperates with the screw 18 and is moved longitudinally as the screw 18 rotates, in a manner which is well understood in the art.

In the form of the invention shown in detail in Figs. 2, 3 and 4, the actuating screw 18 carries a special form of driving sleeve indicated by the numeral 20 which serves as a drivingconnection between said screw 18 and the rotatable body section 11 of the pencil. The form of said driving sleeve 20 is best shown in Figs. 3 and 4 from which it will be apparent that it has a plurality of yieldable or resilient corrugations 21. The corrugated sleeve 20 throughout the major portion of its length frictionally engages and drives the actuating screw 18; and on the l outside throughout a considerable portion of its length lengages and is driven by the body section 11. The driving sleeve 20 rotates freely within the body section 10 due to a substantial clearance between it and the inner wall of that section, as shown at 22. As will be apparent from Fig. 3, the corrugated driving sleeve 20 serves not only as a driving connection between the body section 1l 100 and the actuating screw 18, butA also forms between the casing sections and the actuating screw a plurality of lead magazines 23 which are adapted to receive a plurality of reserve leads L, herein shown as twelve in number, which are substan- 105 tially as long as the lead screw 18. As shown in Fig. 2, the bottom of these lead magazines 'is formed by a washer-like element 24 which surrounds the screw 18.

To the upper end of the corrugated driving no sleeve 20 there is rigidly attached, as by a drive or friction fit, an eraser holder 26, in the outer end of which is inserted a suitable eraser 27. The lower portion of the eraser holder 26 is housed within the upper portion of the body section 1l, as shown at 28. On the upper end of the eraser holder 26, is carried a removable cap 30, provided at its lower end with an ornamental and reinforcing band 31. The internal diameter of the cap 3G is such that when the cap is applied to the eraser holder a driving connection is afforded between itself and that holder.

`'.hus the cap 30, the eraser holder 26, the body section 11, and the actuating screw 18 all rotate in unison in the use of the pencil; and it will be understood that the rotating force may be applied either to the body section 11 or to the cap 30.

It is to be noted that the inner diameter of the corrugated driving sleeve 20 is such that the sleeve, when placed on the screw 18 of the leadactuating mechanism, will intimately engage that screw, and that the intimacy of such contact is increased when the body section l1 is forced onto the driving sleeve, because the outwardly projecting corrugations are distorted from their original shape, shown in Fig. 4, and are caused to assume a somewhat attened condition, as shown in Fig. 3. Thus the inherent resiliency of the distorted corrugations will cause the inwardly projecting corrugations to intimately grip the screw 18, and will cause the outwardly projecting corrugtion to firmly impinge the inner wall of the body section 11. Inasmuch as the inner diameter of the eraser holder 26 is the same as the inner diameter of the body section 11, it will be understood that the driving sleeve 20 will likewise effectively grip the upper end of the actuating screw 18 and impinge the inner wall of the eraser holder.

The form of the invention shown in Figs. 5 and 6 is substantially identical with that of Figs. l to i hereinbefore described, except that the pencil casing includes a single body section 10', which is of substantially the combined length of the body sections 10 and 11 of the pencil shown in Fig. l; and except that the running clearance provided between the driving sleeve 20 and the inner wall of the pencil casing extends throughout substantially the length of that casing as shown at 22. In this form of the invention the screw 18 of the lead-actuating mechanism 16 is actuated through only the cap 30' and its associated eraser holder 26 between the lower end of which and upper end of the body section 10' a running fit is provided, due to the presence there of a clearance as shown at 28. It is, of course, understood that the lower end of the eraser holder 26' is maintained in rm gripping engagement with the upper end of the driving sleeve 20', as explained in connection with the eraser holder 26, and its associated driving sleeve 20 and that the internal diameter of the removable cap 30' is such with respect to the external diameter of the upper end of the eraser holder 26' that an effective driving connection is afforded between the cap and eraser holder.

In the form of the invention shown in Fig. '7, the pencil casing also comprises only a single body section l0, the inner wall of which, instead of presenting a plain cylindrical surface as in Fig. 6, is broached or otherwise provided with a plurality of longitudinal grooves 32, which extend from the washer 24" to the eraser-end of the pencil. It will also be noted that in this form of the invention the driving sleeve 20", instead of being corrugated, is cylindrical and is maintained throughout its length in gripping engagement with the screw 18" of the lead-actuating mechanism 16", the relation of the driving sleeve to the body section 10" being such as to form a plurality of lead magazines 23 extending longitudinally of the pencil. Although the driving sleeve 20 employed in this form of the invention is cylindrical rather than corrugated, a driving connection is afforded between it and its associated removable cap 30, as in the forms of the invention shown in Figs. 1 to 6 inclusive, through the medium of an eraser holder 26", which at its lower end is attached, as by a drive t, to the upper end of the driving sleeve 20, and which at its upper end is adapted to provide a driving connection with the removable cap 30". The eraser holder 26 further dilfers from the eraser holders 26 and 26 already described, in that it is provided intermediate its ends with a division wall 35 which serves as a bottom for the cup-like end of the holder within which the eraser 27 is removably held. It will be noted that the division wall 35 overlies and serves as a closure for the lead magazines 23, access to which may be had, when the cap 30" and the eraser 2'7" are removed, through an opening 36 provided in the division wall 35--it being understood that the opening 36 may be brought into registration with any one of the magazines by turning the eraser holder in either direction.

From the foregoing description, when taken in connection with the accompanying drawing, it will be understood that the driving sleeve in each embodiment of the invention forms with its associated pencil casing a plurality of magazines adapted for the reception of a reserve supply of leads L, each of which is only slightly shorter than the lead-actuating mechanism which extends throughout the major portion of the overall length of the pencil; and that the driving sleeve is connected through the medium of its associated eraser holder to a removable cap which serves not only as'a protective housing for the eraser but also as a convenient means by which the lead-actuating mechanism may be operated.

Although several forms of the invention are herein shown and described, it will be understood that other modifications may be made without departing from the spirit of the invention or the scope of the following claims:

What is claimed is:

1. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and forming with said casing a plurality of lead magazines extending longitudinally thereof.

2. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and forming with said casing a plurality' of lead magazines extending longitudinally thereof, and means carried by said driving sleeve and adapted when rotated to rotate said screw.

3. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and forming with said casing a plurality of lead magazines extending longitudinally thereof, and an eraser holder carried by said driving sleeve and adapted when rotated to rotate said screw.

4. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and forming with said casing a plurality of lead magazines extending longitudinally thereof, an eraser holder carried by said driving sleeve and adapted when rotated to rotate said screw,

'- and a removable cap carried by said eraser holder and adapted to serve as a means external of the pencil casing for rotating said eraser holder and said screw through the medium of its associated driving sleeve.

5. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines, said actuating screw together with its associated driving sleeve being rotatable from without said casing to eiect the operation of said lead-actuating mechanism.

6. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines, an eraser holder carried by said driving sleeve, said screw, driving sleeve, and eraser holder being rotatable from without said casing to eiect the operation of said lead-actuating mechanism.

7. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and having a plurality of corrugations extending longitudinally thereof and forming with said casing a. plurality of lead magazines, an eraser holder carried by said driving sleeve, and a removable cap carried by said eraser holder and adapted to serve as a means external of the pencil casing for rotating said eraser holder and said screw through the medium of its associated driving sleeve.

8. In a mechanical pencil characterized by a casing comprising a pair of body sections disposed end-to-end within which is disposed a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines, said driving sleeve having a running t with respect to one of said body sections and having a driving fit with respect to the other of said sections whereby said actuating screw may be rotated to effect the operation of the lead-actuating mechanism upon relative rotation of said sections.

9. In a mechanical pencil characterized by a casing comprising a pair of body sections disposed end-to-end within which is disposed a leadactuating mechanism including an actuating screw, a driving sleeve carried by said screw and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines, said driving sleeve having a running fit with respect to one of said body sections and having a driving fit with respect to the other of said sections whereby said actuating screw may be rotated'to effect the operation of the lead-actuating mechanism upon relative rotation of said sections, andan eraser holder carried by said driving sleeve, said screw, driving sleeve, and eraser holder being rotatable from without said casing to effect the operation of said lead-actuating mechanism.

10. In a mechanical pencil characterized by a casing comprising a pair of body sections disposed end-to-end within which is disposed a `lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines, said driving sleeve having a running t with respect to one of said body sections and having a driving fit with respect to the other of said sections whereby said actuating screw may be rotated to effect the operation of the lead-actuating mechanism upon relative rotation of said sections, an eraser holder carried by said driving sleeve, said screw, driving sleeve, and eraser holder being rotatable from without said casing to effect the operation of said lead-actuating mechanism, and a removable cap carried by said eraser holder and adapted to serve as a means external of the pencil casing for rotating said eraser holder and said screw through the medium of its associated driving sleeve.

11. In a mechanical pencil characterized by a casing having therein a lead-actuating mechanism 'including an actuating screw, a driving 115 sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and having a plurality of corrugations extending longitudinally thereof and forming with said casing a plurality of lead magazines and having throughout its length a running t with respect to said casing, said actuating screw together with its associated driving sleeve being rotatable from without said casing to effect the operation of said lead-actuating mechanism.

12. In a mechanical pencil characterized 'by a casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect thereto and having a plurality of corrugations extending longitudinally thereof and forming with .said casing a plurality oflead magazines, said driving sleeve having throughout its length a running t with respect to said casing, and an eraser holder carried by said driving sleeve, saidl screw, driving sleeve and eraser holder being rotatable from without said casing to effect the operation of said lead-actuating mechanism.

13. In a mechanical pencil characterized by a '.e' casing having therein a lead-actuating mechanism including an actuating screw, a driving sleeve carried by said screw and held against both rotary and longitudinal movement with respect A, l thereto and having a plurality of corrugations -fff extending longitudinally thereof and forming with said casing a plurality of lead magazines,

said driving sleeve having throughout its length a running fit with respect to said casing, an ,n eraser holder carried by said driving sleeve, said UL screw, driving sleeve and eraser holder being rotatable from without said casing to effect the operation of said lead-actuating mechanism, and a removable cap carried by said eraser holder and adapted to serve as a means external of the pencil casing for rotating said eraser holder and said screw through the medium of its associated driving sleeve.

14. In a mechanical pencil characterized by a casing having internally thereof a plurality of

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