US1729240A - Pencil - Google Patents

Description

Se t. 24, 1929. H. AUGENSTEIN PENCIL Filed Sept. 4, 1928 INVENTOR. flnzyflqyensfgz'iv,

ifflawa ATTORNEY Patented Sept. 24,- 1929 UNITED STATES HENRY AUGENSTEIN, OF NEWARK, NEW JERSEY PENCIL Application filed September 4, 1928. Serial No. 803,837.

This invention relates, generally, to improvements in lead pencils; and the invention has reference, more particularly to a novel construction of lead pencil from which .the leads are adapted to be fed by suitable One of the objects of this invention is to provide a novel lead pencil so constructed that pencil leads may be fed from both of the ends of the same, so that the same pencil may be furnished with two dilferently colored leads, if desired, for selective use as desired.

. Another object of the'invention is to provide a pencil of the above character that is of simple, compact construction and which is easily operated.

Other objects of this invention not at this time more particularly enumerated will be clearly understood from the following detailed description of the same.

With the various objects of this invention in view, the same consists, primarily, in the novel construction and arrangement of pencil hereinafter set forth; and the invention consists furthermore in the novel arrangements and combinations of the various devices and parts as well as in the details of the construction of the same, all of which will be hereinafter more fully described, and then finally embodied in the claims appended hereto.

The invention is clearly illustrated in the accompanying drawings, in which Fig. 1 is a plan View of the novel pencil of this invention, the pencil being illustrated as equipped with an end cap that is shown in section;

Fig. 2 is an enlarged sectional view taken along line 22 of Fig. 1 with the end cap omitted;

Fig. 3 is an enlarged sectional view taken along line 33 of Fig. 2; and

Fig. 4 is an enlarged sectional view taken along line 4-4 of Fig. 2.

Similar characters of reference are employed in all of the hereinabove described views, to indicate corresponding parts.

Referring now to said drawings, the reference numeral 1 indicates the novel pencil as a whole. Pencil 1 comprises a centrally posit oned junction member 2 having a substantially cylindrical central portion with radially extending flanges 4 and 5 at its ends. Similar oppositely extending barrels 6 and 7 have their inner end portions surrounding and frictionally or otherwise secured to the peripheries of the flanges 4 and 5 respectively. The outer end portions of barrels 6 and 7 are formed with inwardl extending annular heads 8 and 10 wh1ch provide external grooves 11 and 12 near the ends of these barrels. Split resilient thimbles l3 and l t have truncated conical portions 15 and 16 that are adapted to extend into the open outer ends of the barrels 6 and 7. The truncated conical portions 15 and 16 frictionally engage the interior surfaces of the outer end portions of barrels 6 and 7 and also engage the beads 8 and 10 respectively.

Pencil 1 has pencil points and 21 at its opposite ends. Pencil points 20 and 21 are formed with internal annular flanges 17 and 18 respectively. Flanges 17,.and 18 surround the thimbles 13 and 14 and these thimbles have outwardly extending end flanges which engage the flanges 17 and 18 and assist in positioning the pencil points 20 and 21 in abutting concentric relation with the outer ends of the barrels 6 and 7. Lugs or projections 28 and are formed on the junction member 2 and extend outwardly from the outer faces of flanges 4 and 5 respectively. Lead clamp guide members 22 and 23 have their inner ends overlying and rigidly secured to projections 28 and 30 and extend longitudinally within barrels 6 and 7. These guide members together with junction member 2 form in effect a single rigid body extending substantially the full length of the novel lead pencil. The outer end portions 24 and 25 of guide members 22 and 23 are of reduced dimensions and are of hollow cylindrical form. End portions 24 and 25 are .threaded into recesses provided in the pencil points 20 and 21 and act in conjunction with thiinbles 13 and 14 toretain these pencil points in abutting relation to the outer ends of the barrels 6 and 7. These pencil points have lead guiding apertures 26 and 27 in axial alignment with the end portions 24 and of the guide members. Since lead clamp guide members 22 and 23 and barrels 6 and 7 are rigidly secured to junction member 2 and as pencil points 20 and 21 are screwed upon the outer ends of the members 22 and 23, all of these members are rigidly and positively held together and in proper longitudinal alignment.

Projections 28 and 30 conform to the interior of guide members 22 and 23 and serve to align and position the inner ends of these guide members so that these members extend axially Within the barrels 6 and 7 The flanges 4 and 5 of the junction member 2 are provided with hearing apertures within which rods 31 and 32 are rotatably mounted. Rods 31 and 32 extend longitudinally of the barrels 6 and 7 and have their inner end portions extending inwardly, of the flanges 4 and 5. Pinions 33 and 34 are secured upon the inner end portions of the rods 31 and 32 adjacent the inner walls of the flanges 4 and 5. Collars 49 and 50 are secured upon the rods 31 and 32 adjacent the outer walls of the flanges 4 and 5. These collars together with pinions 33 and 34 prevent endwise movement of rods 31 and 32. Pinions 33 and 34 are adapted to mesh with an internal gear 35 secured as by a screw 36 to a sleeve 37 that surrounds and is rotatable upon the inner end portions of the barrels 6 and 7. The portions of rods 31 and 32 that extend externally ot' the junction member 2 are threaded and are adapted to drive pencil lead clamps 41 and 42 that carry pencil leads 43 and 44. The

threaded portions of the rods 30 and 31 extend through and cooperate with internally threaded lugs 38 and 40 formed on lead clamps 41 and 42. The lead clamps 41 and 42 are adapted to be moved longitudinally along the barrels 6 and 7 by the turning of the threaded rods 30 and 31 within these clamps. Guide members 22 and 23 conform to the lead clamps 41 and 42 and serve to guide these clamps during their longitudinal movements within the barrels 6 and 7. Clamps 41 and 42 grip the inner ends of pencil leads 43 and 44 respectively. Leads 43 and 44 extend within the guide members 22 and 23 and through the lead uiding apertures 26 and 27 in the pencil points 20 and 21.

The pencil may be equipped with one or more end caps 45. End ca' s 45 are adapted to cover and protect t e pencil points and pencil leads. These caps have their open ends 46 turned inward slightly and are provided with longitudinal slits 47 to permit the open ends of these caps to yield in passing over the pencil points 20 and 21. The ends 46 are adapted to snap into the grooves 11 and 12 near the ends of the barrels 6 and 7, thereby securing the caps to the pencil 1.

In operation, to feed the leads 43 and 44 out of the pencil points 20 and 21 it is merely necessary to position the sleeve 37 upon the barrels 6 and 7 so that the internal gear 35 meshes with one of the pinions 33 or 34. Then the turning of the sleeve 37 upon the barrels causes the internal gear to rotate the pinion with which it meshes, thereby turning one of the rods 31 or 32 and effecting the feeding of the corresponding pencil lead. It is merely necessary to shift the sleeve 37 slightly longitudinally upon the barrels to cause gear 35 to mesh with either one or the other of the pinions 33 and 34 preliminary to movin either of the leads outwardly .or inward y of these barrels. To insert new leads into the pencil, it is merely necessary to push such leads inwardly through the lead guiding apertures 26 and 27 until these leads are gripped by the lead clamps 41 and 42.

It will be noted that the pencil of this invention is very simple and compact in construction and is adapted to retain two ndependent leads ready for immediate use such as an ordinary black lead and a colored lead.

The end cap 45 fits either end of the pencil and is provided with a clip 48 which enables the ready carrying of the pencil from place to place.

The sleeve 37 is used to operate both leads and it is merely necessary to shift this sleeve slightly toward the lead which it is desired to move and then turn in order to move the lead.

the sleeve As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is 1. A lead pencil comprising, a barrel, a pencil point positioned in abutting relation to an end of said barrel, a lead clamp movable within said barrel for feeding a lead through said pencil point, motion transmitting means extending within said barrel and connected to said lead clamp, a sleeve surrounding said barrel, driving means secured to said sleeve and adapted to cooperate with said motion transmitting means, said sleeve being movable lengthwise of said barrel to eiiect the operative engagement and disengagement of said driving means with said motion transmitting means, said sleeve being rotatable about said barrel to cause said driving means to operate said motion transmitting means to effect movement of said lead clamp, and

means cooperative with said barrel, said pencil point, and said motion transmitting means for retaining these members in associated operative condition.

2. A pencil comprising,.a plurality of barrels, a member connecting said barrels, pencil points retained upon the ends of said barrels, lead clamps movable within said barrels for feeding leads through said pencil points, motion transmitting means carried by said connecting member and operatively connected to said lead clamps, a sleeve surrounding said barrels, driving means secured to said sleeve and adapted to cooperate with said motion transmitting means, said sleeve being movable lengthwise of said barrels to eil'ect operative engagement and disengagement of said driving means with said motion transmitting means, said sleeve being rotatable about said barrels to cause said driving means to operate said motion transmitting means to effect movement of said lead clamps, and

,means cooperative with said pencil points and said connecting member for retaining the parts of said pencil in assembled relation.

3. A pencil comprising, a member having end flanges, a-pair of aligned barrels extending opposite direction from said member, each of said barrels having its inner end socured to one of said endflanges, pencil points positioned in abutting relation to the outer ends of said barrels, lead clamps movable within said barrels for feeding leads through said pencil points, rods threaded through said lead clamps and having bearings in said flanges, pinions secured to said rods, a sleeve surrounding said barrels, a gear secured to said sleeve for cooperating with said pinions, said sleeve being movable lengthwise of said barrels to effect the meshing 0t said gear with either of said pinions, and said sleeve, with said gear in mesh with said pinions, being rotatable about said barrels to cause rotation of said pinion and its rod and effect movement of the lead clamp operatively connected to said rod, and means connecting said flanges with said encil points for retaining the parts of said pencil in assembled relation.

4. A pencil comprising, a pair of aligned barrels, a junction member 'oining the inner end portions of said barrels, thimbles frictionally engaging the outer end portions of said barrels, pencil points mounted upon said thimbles, said thimbles acting to assist in positioning said pencil points in concentric abutting relation with the outer ends of said barrels, lead clampsmovable within said barrels for feeding leads through said pencil points, and guide members positioned within said barrels for guiding said lead clamps dur in g their motion within said barrels, said guide members connecting said junction members to said pencil points, to thereby retain the parts of said pencil in assembled relation.

5. A lead pencil comprising, a junction member, oppositely extending barrels having their inner end portions secured to said junction member, a pencil point positioned at the outer end of one of said barrels, a second pencil point positioned at the outer end of the other of said barrels, said pencil points being adapted to support the projected ends of pencil leads, means for retaining said pencil points at the outer ends of said barrels, lead propulsion means extending within said barrels in opposite directions from said junction member, and means externally carried on said barrels and adapted to be manipulated to selectively actuate either one or the other of said lead propulsion means.

6. A lead pencil comprising, a junction member, oppositely extending barrels having their inner end portions secured to said junction member, oppositely extending lead clamp guide members positioned within said barrels and -having their inner end portions secured to said junction member, lead clamps positioned within said barrels and arranged to be guided by said guide members, pencil points positioned at the outer ends of said barrels and secured to said guide members, said pencil points being adapted to support the projected ends of pencil leads carried by said lead clamps, means extending within said barrels in opposite directions from said junction member for propelling said lead clan'ips, and means externally carried on said barrels and adapted to be manipulated to selectively actuate either one or the other of said propelling means.

In testimony that I claim the invention set forth above I have hereunto set my hand this 30th day of August, 1928.

HENRY AUGENSTEIN.

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