US1756242A - Writing tool - Google Patents

Description

April 29, 1930. c. F. DoEBLr-:R

WRITING TOOL Filed Sept. 26, 1922 @Mew fr/SMM 3511 LA Git/komaf @MTW fi/W v Patented Apr. 29, 1930 UNITEDI STATES CHARLES F. DOEBLER, F NEW PATENT oFi-i-ca WRITING 'rooL Application led September 2Q, 1922. Serial No. 590,598.

This invention relates .to pencils. More specifically it relates to pencils in which the lead or other-crayon may be renewed when consumed.

One of the objects of the invention is to Aimprove the appearance of rellable pencils. Other objects are to improve the construction, reliability of'operation and convenience in operation of rellable pencils.

Another object is to provide a refillable pencil which is comfortable in use. A further object is to provide a reillable pencil having a novel form of storage magazine for leads, or other crayons, and from which the latter may readily be withdrawn., Other objectsand advantages will appear as the 1nvention is hereinafter disclosed.

Referring to the drawin s which illustrate what I now consider a pre erred form of the invention Fig. 1 is an elevation of one form of pencil embodying the features of inventlon.v v

Fig. 2`is a sectional elevation. of the pencil shown in Fig. 1.

' Figs. 3, 4, 5 and 6 are enlarged sections taken on the lines 3-3, 4-4,'55, and (5f-6, res ectively, of Fig. 2.

eferring to the drawings, it will be seen that the refillable vpencil there illustrated comprises a tubular body portion 10 which may have any desired shape 1n cross-section, depending upon the design of the pencil. In the form selected for illustration the body portion 10 is a hollow cylinder. T he body portion 10 is provided at one end with a tip 11, preferably detachably connected thereto as by means of cooperating screwthreads 12 provided on the interior of the member 10 and on the reduced upper end vof the tip 11. It will be noted that the tip 11 is provided with a shoulder 13 Which not only serves to limit the movement of the tip into the body portion 10, byengaging or abutting the latter, but which projects beyond the body portion for a purpose which will hereinafter appear.

Adjacent the vend opposite the tip, the body portion 10 is provided with a second shoulder or flange 14, This shoulder or flange 1s shown conveniently provided by the clip by which the pencil is secured tothe pocket or garment of the user. The clip illustrated is of the .same form as the clip disclosed and claimed in my copending application Serial No. 589,754, executed by me on September 5, 1922, and entitled Clips for writing tools, to which reference may be had for a fuller disclosure. Suffice it here to say that the laminee 17, 18, of the clip are each integrally secured to the ring portions 15, 16, respectively, and the latter surround and are rigidly secured to the body portion 10 as by mea-ns of a driving fit, soldering, brazing vor in any other suitable manner.

, An outer .casing is provided on the body portion 10 between the shoulders 13 and 14. While this outer casing may assume various forms, [prefer to provide a multi-section casing such, for example, as the one illustrated. This outer casing, which may be referred to generally at 20, is shown in four sections 20, 20", 20, and 20d, it being understood that more or less sections may be employed.- Each such section is substantially in the form of a hollow cylinder adapted to be slid onto or off the body portion 10. It will be notedthat the sections are held in position on the body portion between the shoulders 13 and 14. The sections of the outer casing 2O may be made of hard rubber, Celluloid, erinoid, metal, fibre or other suitable substances. Some of the sectionsmay be made of a material of one color while others may be of the same or dierent m9.--

terials differently colored so that there is a wide choice in the selection of design of the outer casing with a minimum number of stock parts. Pencils of very attractive and digniied"appearance are therefore possible and the varying tastes and individualdesires of prospective purchasers may be met with a minimum number of stock parts' on hand by the manufacturers or dealers. Thus, one user may prefer a pencil having a section20a of green erinoid, a section 20b of black hard rubber, a section 20 of green erinoid, and a section 20d of black hard rubber. Other users may desire different combinations of materials and color schemesin-the design of the outerv casing. These various distinctive designs may readily be attained by selecting the Veo desired sections from stock, mounting them in the desired sequence upon the body portion 10, and securing them in assembled position by screwing the tip 11 home in the body por- Preferably the section 20d, or that portion of the outer casing nearest the tip, should be designed to provide a comfortable grlpplng portion for the fingers of the user. I therefore shape the end of the casing 20, ad] acent tip 11, as shown in Figs. 1 and 2. rIhe shape of the outside of the section 2Od may be generally described as convergent-divergent, i. e., tapers toward the tip end of the pencll and then diverges or flares outwardly. For comfort the section 20d is preferably constructed of hard rubber or similar material.

While the pencil thus far described may be provided with other forms of crayonholding and crayon-feeding mechanisms, I prefer at present to provide the mechanism shown in the drawings which may be constructed substantially as follows:

The tip 11 is provided with a substantially smooth-walled cylindrical bore 21, which communicates with an internally threaded cylindrical bore 22, which in turn communicates with a tapering or conical bore 23. A collet 24 is mounted within the tip and is provided with an axial bore slightly larger than the crayons to be employed in the pencilL The cylindrical head portion 25 ofthe collet 24 is adapted to slide into the lower end of the body portion 10, the cylindrical body portion 24 of the sleeve is slidable in the bore 21 of the tip, the collet 24 is externally screw-threaded at 26 to screw into and out of the screw-threaded portion 22 of the tip and lower end 27 ofthe collet is tapered or conical so as to enter the tapered bore 23 of the tip. The tapered end 27 of the collet 24 is provided with one or more longitudinal slots 28 which extend from the base of the screw threaded portion 26 to the outerend of the collet, and preferably the apex angle of the cone 27 is slightly greater than that of the bore 23. By removing the tip 11 from the body portion 10 of the pencil androtating the members 24 and 11 with respect to each other and in the proper direction the interior diameter of the collet 24 may be adjusted at will and any desired degree of friction imposed upon the crayon in the collet. After the desired adjustment has been effected the tip and its collet may be again connected to the encil by screwing the tip home into the bo y portion 10. I shall now proceed to describe the mechanism for feeding crayons through the sleeve and tip.

A nut 30 is rotatably mounted within the body portion or barrel 10 and may be rotated from the upper end of the barrel. by'

means of a sleeve 3 1 rigidly secured (by solder or other suitable means) at its lower end to said nut, and projecting at its upper end l beyond the barrel 10. In-order to prevent longitudinal movement of the sleeve 31 and nut 30 with respect to the barrel 10, the nut is provided with an annular groove and the arrel 10 and sleeve 31 are spun into this groove as clearly indicated at 32 in Fig. 2. A screw 33 extends through the internally threaded nut 30 so as to be moved longitudinally of the barrel 10 upon rotation of the nut. To prevent rotation of the screw with respect to the barrel 10, the latter is provided with a key 34 which engages in the notch 35 (see Figs. 2 and 5) provided in a disc 36 rigidly secured to the llower end of the screw 33. A cylindrical plunger 37 of slightly less diameter than that of the crayons to be ernployed is adapted to enter the bore inthe sleeve 24 and is curved at its upper end as shown in Figs. 2 and 4 so as to be uided in its longitudinal movement in the arrel 10. It will be noted that downward movement of the screw 33 will cause the disc 36 to engage the head of the plunger 37 and push the plunger through the sleeve 24 to push a crayon ahead of it.

The upper end of the sleeve 31 is externally screw-threaded to screw into the internally threaded flanged-in or spun-in, portion 40 of a sleeve 41. A rubber or-eraser 42 is shown mounted in the upper portion of the sleeve 41. A sleeve 43 is rotatably mounted on the upper end of the barrel 10 and is connected by means of a pin 44 (see Fig. 6) to the sleeve 31 to rotate the latter upon rotation of said sleeve 43. rIhe pencil is provided with a cap 45 which frictionally engages the sleeve 43 so as to be detachably held thereby and so as to rotate said sleeve 43 (and the sleeve 31 and nut 30) upon rotation of the cap.

Obviously by rotating the cap 45 in the proper direction the sleeve 43 will be rotated and rotate the sleeve 31 and nut 30 to cause the screw 33 and disc 36 to move downwardly in the barrel 10. Such movement of the disc 36 causes the plunger 37 to propel the crayon through the bore of the sleeve 24 and through the tip of the pencil. After a crayon has been consumed reverse rotation of the cap 445 will move the disc upwardly. The plunger 37 may then be forced upwardly and a new crayon inserted in the sleeve 24 and tip.

I have devised also a novel form of means for storing and gaining access to extra crayons carried in the pencil. A sleeve 50 is loosely mounted around the screw 33 and is provided at its lower end with a flange 51. Thus, there is provided an annular chamber 52, of which the sleeve 50 constitutes the inner wall, the sleeve 31 the outer wall, and the flange 51 the bottom. Extra crayons 53 may be conveniently stored in this chamber 52 and may be conveniently withdrawn. To obtain an extra crayon, the cap 45 is pulled off the pencil, the sleeve 41 unscrewed from sleeve 31 (the sleeve 43 being gripped by the operator and prevented from rotating with respect to the sleeve 41), and the sleeve 50 pulled out of the pencil raising the extra crayons 53 with it. One vof the projecting ends of the extra crayons 53 may then be readily grasped and the selected crayon withdrawn trom the pencil. The acts in restoring the parts will now be obvious. It will be further noted that access may be had to the eraser 42 at any time simply by pulling the cap 4'5 olf the pencil.

Preferably, all parts of the pencil above described, with the exception o the eraser and possibly some, or all, of the sections of the outer casing, are constructed of metal or metals most suitable in view of the functions intended and performed.

In view of the foregoing description, the operation and advantages of my improved pencil will now be apparent to those skilled in the art. In accordance with the patent statutesI have described the principles of operation of my invention, together with the apparatus which I now consider to represent the best embodiment. thereof, but I desire to have it. understood that the construction shown isA only illustrative and that the invention can-be carried out by other means within the scope of the appended claims.

What I claim is Y 1. A pencil comprising in combination, a substantially tubular body portion, a tip at one end thereof, a cap at the opposite end, and a hollow outer casing comprising a plurality of. separate removable tubular sections surrounding said body portion, said sections forming a cylinder tapering towards said tip and having annular depression near its junction therewith to facilitate the handling of said pencil during operation.

2. A pencil comprising in combination, a substantially tubular'body portion, a tip at one end of said body portion, a cap at the opposite end of said body portion, and a hollow outer casing comprislng a plurality of separate tubular sections detachably connected to said body portion between said cap and tip and through which said body portion extends;

3. A pencil comprising in combination, a substantially tubular body portion, means forming a shoulder adjacent one end of said body portion, means formin` a shoulder adjacent the opposite end of said body portion,

- a hollow outer casing comprising a plurality of separate tubular sec-tions and held against longitudinal movement between said shoulders, and means detachably connecting at least one of said shoulder-forming means to said body portion whereby said outer casing may be removed from said body portion.

4. A pencil comprising in combination, a substantially tubular body portion, means forming a shoulder adjacent one and of said body portion, a tip detachably connected to said body portion at the opposite end thereof, and provided with a shoulder extending beyond outside of'said body portion, and a hollow outer casing comprising a plurality of separate tubular sections and abutting said shoulder at its opposite ends, said casing being removable from said body portion upon detachment of said tip from said body portlOIl.

5. A pencil as set forth in claim 2 in which the section of the outer casing adjacent the tip tapers towards said tip and forms an annular depression near its junction 'therewith with to facilitate the handling of said pencil during operation. -v

8. A writing tool comprising in combination, a substantially tubular portion, a tip at one end thereof, a cap at the opposite end, and a removable hollow outer casing forming a cylinder tapering towards said tip and having an annular depression near its junction therewith to facilitate the handling of said tool during operation.

9. A writing tool comprising in combination, a substantially tubular body portion, a tip at one end thereof, a cap at the opposite end, and a hollow outer casing detachably connected to said body portion between saidl cap and said tip and through which said body portion extends, said outer casing forming a cylinder tapering towards said tip and having an annular depression near its junction therewith to facilitate the handling of said tool during operation.

10. A writing tool comprising in con1bina tion, a substantially tubular body portion,

means forming a shoulder adjacent one end thereof, means forming a second shoulder adjacent the opposite end, an outer casing held against longitudinal movement between said shoulders, and means detachably' connecting at least one of said shoulder forming means to said body portion Whereb said outer casing may be removed there rom, said outer casing forming a cylinder tapering towards one of said ends and having an annular de? pression near the shoulder corresponding thereto to facilitate the handling 'of said tool during operation. 11. A writing tool comprising in combination, a substantially tubular body portion, means forming a shoulder adjacent one end thereof, a tip detachably connected to said- .'body ortionq at the opposite-end thereof and provi ed with a shoulder, and an outer casing v abutting said shoulders at its opposite ends and removable from said body portion upon detachment of said tip, said outer casing forming a cylinder tapering towards said tip and having an annular depression near the shoulder thereof to facilitate the handling of said tool during operation.

12. A encil comprisin in combination, a substantlally tubular bo y portion, a tip at one end thereof, a cap at the opposite end, and an outer casing comprising a plurality of removable tubular sectlons.

In testimony whereof I hereto aHix my signature.

CHARLES F. DOEBLER.

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