US1594978A - Pencil - Google Patents

Description

Aug. 3 1926. 1,594,978

c. E. PETERSON PENCIL Filed Oct. 23, 1924 leads 3 in position for use there is Patented Aug. 3, 1926. I UNITED STATES PATENT OFFICE.

, CHARLES E. PETERSON, OI IINNEAPOLIB, IINNESOTA, ASSIGNOB OF ONE-HALF T0 MERCHANT & KILGORE, 01' MINNEAPOLIS, MINNESOTA, A CORPORATION 01 MIN- rmrom Application fled Dotober 53, 1804. Serial Io. 745,507.

My invention provides an extremely simple and highly eflicient pencil of the type that utilize and feed thin leads, and, generally stated, the invention consists of the novel construction, combinations and arrangements of parts hereinafter. described and defined in the claims.

The casing or body of the pencil may be made of any suitable material, but the general character of the pencil is such that 1t is especially adapted to use ,of a wooden casing or body of the same or general char-. acter as that of an ordinary lead pencil, which may be equipped with the customary rubber. 1 I

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the ,several views.

Referring to the drawings Fig. 1 is a view chiefly in axial section but with some parts shown in full and with some parts broken away, showing the 1mproved pencil;

Fig. 2 is a transverse section on the line 2-2 of Fig. 1; Y Y

Fig. 3 is a transverse section on the line 3-3 of Fig. 1;

Fig. 4 is a transverse section on the hue 4-4 of Fig. 1; and

Fig. 5 is a plan view showing the feed tube and its head removed from the casing or body of the pencil and detached from the feed stem.

The wooden casing or body 6 ofthe pencil is preferably made of two half sections glued together, as is done in the manufac-,

ture of an ordinary lead pencil; but this wooden casing or body is provided with a quite large axial passagethatpreferably extends completely through the same. The said passage comprises a cylindrical portion 7 having diametrically opposite extension grooves 8, which latter are preferably located 90 from the joint between the two wooden bod sections, as best shown in Fig. 3. To the utt end of the pencil bod is or may be attached the customary rub rholding ferrule 9 eipliilpped with an ordinary rubber 10, wh atter closes the butt end passa For ho ding one of the small marking pro.-

vided a small metallic feed tube 11 that frictionally fits the cylindrical portion 7 of capable rtation or of movements, as best shown in Fig. 1. The

rear or.largestportion of the head 12 is preferably substantially the diameter of the exterior of the casing or pencil body and is preferably knurled so that the said head may be easily rotated.

Working within the feed table 11 is a feed stem or screw 15 that has threaded engagement with the inner end portion of said tube, the later being preferably somewhat contracted to better afford the said threaded engagement. The rear or outer end of the feed stem 15 is bent, flattened or otherwise formed so that it will slide in the groves 8 but will hold said feed stem against rotation. In the construction illustrated, the said rear end of the stem 15 is formed with a U-shaped bend 16, the bow of which works in one of the grooves 8 and the lon free end of which works in the other 0 said grooves. Extra leads are adapted to be contained within the butt end of the casing or body 6, and to prevent these from dro ping downward when the pencil is in use, t e on'g arm of the U-shaped bend 16 is flattened or widened at 16 so that it somewhat closely fills the cylindrical portion 7 of the passage formed within the casing, see particularly 1 and 2.

The feed tube 11 has frictional engaglement with th '?lindrical portion 7 o t axial p o the casing and, hence, is anal removal. To better insure the proper frictional contact and to perform another and highly im rtant function presently to be noted, the eed tube 11 is split at 11 see 1particularly Fig. 5, from its inner end wa u toward its head. This splits the tube an permits the tube sections-to be spre d or sprung apart so that it will have to ressed to ther for insertion into the cylin rical sur ace 7. Hence, when the split tube is inserted as at the same time,

stated it will maintain proper frictional contact with said cylindrical surface 7; but more important than this, it splits the threaded end of said tube so that when the tube 11, with the feed stem lfi, is drawn out of the casing, said stem 15 may be freely removed or inserted into the tube so as to quickly set the same in proper position for feeding action either on a newly inserted or on an old and shorter lead contained within the feed tube 11 and feed head. This enables the leads always to be inserted into the feed tube from the rear or split end and does not require the lead to be forced back through the prongs of the fee-:1 head.

When the lead is properly applied in the feed tube and head and the feed stem is set in the proper initial position and the tube is then reinserted into the casing with the head bearing against the end of said casing, a progressive feeding action of the lead may be produced simply by ap lying the fin er and thumb to the knurle portion of the head 12, thereby rotating the same and the tube 11, causing the latter to act asa nut on the non-rotary feed stem 15. Of course, when the split feed tube is inserted into the cylindrical surface 7, the threads of its inner end will be held in close contact with the threads of said feed stem 15. This pencil, as is obvious, is. pable of being quickly refilled with lead ind re-adjusted for use. It is of such construction that it may be very cheaply made and,

cient pencil. The adapted for use in casing or body is in itself highly important, for it is a well known fact. that a wooden casing has a better feeling in the hand than a casing or body made of metal. celluloid.

fact that it is so well said feed tube. and a feed will afford a highly; chi-'- connection with a woodenor any other material. and moreover, on a wooden body, advertising matter or other words or designs may be very readily applied by stamping, printing or otherwise.

What I claim is 1. A pencil comprising a casing, a feed tube rotatively mounted and detachably seated in said casing and provided with a head abutting the writing end of said casing, said head affording an extended guide for the lead and means for rotating said feedtube. a feed stem having threaded engagement with said tube, itself slidably and removably seated in said casing but held against rotation therein, the threaded portion of said feed tube being split so that when removed from said. casing said stem may he slid axially through said split threaded portion. the said casing, when said feed tube is inserted therein, serving to hold the split threaded portion of said feed tube engaged with the threads of said feed stem.

3. The structure defined in claim 1 in which the split portion of said feed tube is under spring tension to spread when removed from said casing. I

3. A pencil comprising a casing, a feed tube rotatively mounted and detachably seated in said casing and rovided with a feed head abutting the writing end of said casing, said head affording an extended guide for the lead and a means for rotating stem having threaded engagement with said feed tube, itself removably seated in said casing but held against rotation. said casing at the rear or said feed stein being formed with a leadholding chamber. the rear end of said feed screw being formed to close the front end of said lead-holding chamber.

In testimonv whereof I afiix my signature.

HARLES E. PETERSON.

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