US1614860A - Refillable pencil - Google Patents

Description

Patented Jan. 18, 1927.

manna m. maunr'rx, or new You my.

nsmmem rmrcm Application filed November 26, 198$.- Serlal No. 677,008.

This invention relates more particularly toa class ofjwriting devices.

1 My invent-ion has for its object primarily to provide a pencil in which graphite lead is preferably used for wr ting and marking purposes, and which is of aform hav ng a magazine adapted to hold a number of strips or pieces of the lead so that when each lead. is consumed it may be replenished from "within the pencil instead of requiring the new lead to be inserted in the pencil as is incident tothe re uirement of a number of ordinary types 0 pencils of this class, it being well known that owing to the fragility of such strips of lead they .arevery susceptiblev of being broken during the lnsert ing process. The invention consists essentially of a tubular casing divided into a rear compartment and a forward compartment or magazine for holding a number of strips of marking lead. On the magazine end of the casing is a cap which is removable for allowing access into the magazine, and in this cap is an opening or outlet through which i the marking lead is caused to protrude for use. Within the casing is a rooved bar for. holding a single stri of t e marking lead, and this bar leads mm the outlet of the cup, through the magazine and into the rear com m-rtnnent. Extendingfrom part of the wall of the grooved bar to the 0p osed part i of the casing is a deflecting dhnge against which the leads in the magazine will move when the casing is rcvolvably swung, and n turn one of the leads wlllmovc into the groove of the bar when the groove 18 omgty.

ther objccts'of the invention are to provide in the grooved bar a rod or feed propeller which is slidably adjustable toward and from the. cap for causing the marking lead to be adjustably, fed-through the outlet of the cap; tov provide in the rear compartment rotative means having a spiral groove engaged by the feed propeller so that said means when rotated willv cause the propeller to move in the grooved bar toward and from the ca for adjusting the marking lead outward y of the outlet of the cap when it isdesired to use the pencil for writing; and a further object of the invention is to provide a refillable pencil of a simple, eilicient and durable construction which may "be made in any appropriate size and shape.

\Vith these and other objects in view, thev invention will be hereinaftermore fully ex- Fig. 2 1s a detail sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is a sectional view taken through the gro'oved'bar used in the pencil.

Fig. 4 is an elevation of a slightly modified form of the pencil. v

Fig. 5 is, a detail sectional view taken on the line 55 of Fig. 4.

Fig. 6 is a sectional .view taken on the line 6-43 of Fig. 2, and

Fig. 7 is a sectional view taken on the line 7-7 of Fig. 2.

of anyappropriate shape and size, though the form of the casing illustrated has a tubular or cylindrical wall 11. Interiorly of the casing 10 at the'central part of its wall is a removable partition or circular plate 12 dividing the easing into a forward compartment or magazine 13 and a. roar coinpartment 14. The open forward end: of the magazine portion ofthe casing 10 is proforably exteriorly threaded, and on these threads is removably screwed the threaded end 15 of a cap, as 16. The cap 16 is tubular and may be of substantially u cone-shape with one end of its passage disposed through the apex of. the cap to provide an outlet 17 for marking lead, as 18, when it is desired to use the pencil for marking purposes. By removing the cap 16 from the casing 10 in the magazine 13 may be placed a suitable number of the. loads 18, and each lead is preferably in the .form of a strip of graph ite, such as is commonly used in pencils of this class. The'form of the casing, shown in'Figs. l and 2, has in its central part a transverse opening, as 19, which. leads into the rear compartment 14 at the partition 12, while in the form of thecasing, shown in Figs. 4 and 5, with. The rear end part of the casing may be interiorlythreaded, as at 20, and extend- I The pencil has a casing 10 which may be this opening is dispensed plained with reference to. the accompany, mg drawing forming a part of this specifi "the casing.

ing lengthwise of the interior of the casing through anopening in the dividing partition 12, and this partition is soldered or otherwise lixed'to the bar. Extending from part of the wall of the grooved bar 21 in the magazine 13 us well as abuttingagainst the partition .12 may be a flange 23 which terminates at an opposed part of the inner face of the wall of the casing 10, and on this flange is a short lug, as 24, which is disposed in a hole, as 25, provided in the wall of the casing in proximity to the cap 16. The grooved bar 21, and flange 23 are preferably made of yielding spring metal, and the lug 24'is of a size so thatwhen the bar and theflange are assembled in the'casing the bar will yield suiiiciently to allow the lug to be. admitted into the casing and sprung into the hole 25 for holding the grooved bar in a stationaryposition in the casing. The grooved bar 21 is of considerably smaller diameter than the diameter of the interior of the casing. The space in the magazine surrounding the grooved bar may thereb 1 hold a relatively largenumber of the marhing leads 18. The flange 23 is also of a width so that vits free edge is in close iroximity to the wall of the casing, and w ien it is desired to charge the groove of the bar 21 with one of the strips of marking lead the casing is swung to make approximately a half-turn. Thelead' in the magazine will then be moved against the flange 13 so that when the casing is slightly revolved reverscly one of the strips of the marking lead will move into the groove 22 of the bar. Leading from the end of the grooved bar 21 at the cap 16 may be a tubular-tip, as 26, of a length and diameter so that it reniovahly extends through the passage of the tubular rap-16, and the passage of the-tip 26 is of a diameter to receive each of the strips of the marking lead so that the strip may bereadily forced through the tip and outwardly of the outlet '17 of the cap 16, but will frictionally hold the strip of lead sufiicienlly to prevent it from tending to accidentally fall out of the tubular tip,

Serving toca-use the strip of marking lead in the groove of the bar 21 to be adjustably moved through the tubular tip 26 and outwardly of the cap 16, in the grooved bar is a slidable feed propeller or rod 27. This feed rod-is of greater length than the combined length of the magazine 17 and the tubular tip 2.6 of the grooved bar 21 so that the feed rod may be moved inthe rear compartment 14,- and in the magazine toward and The grooved bar21 passesfrom the cap 16. When the feed rod 27 is moved toward the cap the strip of marking lead 18 seated in the groove of the bar 21 will be moved into and outwardly of the tip 26 and outwardly of the cap 16.

The feed rod 27 is adjustably moved back and forth in the grooved bar 21 by means of a rotary element, as 28, which is preferably composed of a strip of wire bent in the form of a spiral spring having spaced convoluted members, as 29, and the space between the convolution provide a spiral groove, as 30, extendin throughout the length'ot the ele-v ment. The rotary element is of a length approximately similar to the length of the rear compartment 14 of the casing 10, and

the elei'nent surrounds the part of the grooved bar 21 and feed rod 27 in the rear compart'mentas well as being of a diameter to allow of being freely rotated. On the feed propeller or rod 27 is a 111 31 which is movably seated in the spiral groove 30 of the rotary element 28 so that when the ele ment is' revolved accordingly the lug 31 will likewise move in the. groove 3'0'and the feed rod will then be moved in the grooved bar 31 toward and from the tubular tip 26.

In the form of the pencil illustrated in Figs. 1 and 2, the threaded end 20 of the casing 10 may be closed by an exteriorly threaded cap, as 32, which may be of a form for carrying a block of erasing rubber, as 33. The rear end of the grooved bar 21 and rear end of the rotary element 28 may movably abut against the cap 32. In the rear compartment 14 of the casing at the opening 19 is a wheel, as 34, which is rotatably mounted on the grooved bar 21 at the dividing partition 12 of the casing, and the forward end of the rotary spiral element 28 is fastened, at 35, to this wheel. The wheel 34 is of a diameter so that part of its outer edge protrudes through the opening 19 of the casing, and by rotating this wheel the rotary element 28 will be revolved for moving the lug 31 and the feed rod 27, as above explained.

In the form of the pencil, shown in Figs 41 and 5, the threaded end 20 of the casing may have a threaded sleeve, as 36, screwed therein, and in this sleeve is rotatably held the annular flange or neck, as 37, of a cap. as 38, disposed exteriorly of the rear end of the casing. In the cap may be l'll'OVlllOfl an erasing rubber. as 39. The rear end of the grooved bar 21 and rear end of the rotary spiral element- 28 are seated in the rotatable sleeve 36, and the element 28 is'fastened, at

40, to the cap 38 so that by revolving the cap 38 and sleeve 36 the rotary element 28 will be revolved for adjustably moving the lug 31 and the feed rod 27 also as hereinbet'ore explained.

In the foregoing description, I have embodied the preferred form of my invention.

but I do not wish to be understood as limiting myself thereto, as I am aware that modifications may be made therein without departing from theprinci le or sacrificing any of the advantages of this invention, therefore, I reserve to myself the right to make such changes as fairly fall within the scope thereof.

Having thus described my invention, 1

claim as new and desire to secure by Letters Patent:-

1. In a pencil as characterized, the combination with a casing having a removable tip, of a, magazine in the casing adjacent the tip to receive marking leads, a grooved bar in the magazine having a tubular tip protruding through the tubular tip of the casing, said grooved bar having an internal diameter slightly larger than each of the leads and the bar being of considerably less diameter than the inner diameter of the magazine to provide a space for passage of the leads from the magazine into the groove of the bar, and a flange of approximately the length of the magazine extending from one of the edges of the groove of the bar to the casing, said flange having a lag protruding through an opening in the casing.

2. In a pencil as characterized, the combination with a casing having a removable tubular tip on its forward end and having a rear compartment, and having a magazine in the casing adjacent the tip to receive marking leads, of a groove bar in the magazine extending into the passage of the tubular tip and extending into the rear compartment of the casing, the groove of said bar being slightly larger than each of the leads and the bar being of considerably less diameter than the inner diameter of the magazine to provide a space for passage of the leads from the magazine into the groove of the bar, a flange of approximately the length of the ma azine extendin from one of the edges of the groove to the casing, a propelling rod in the groove of the bar, a rotatable spiral wire in the rear compartment of the casing surroundingthe grove bar and the propelling rod and having spaced convolutions, and a lug protruding from the propelling rod and movably disposed between the convolutions of the s iral wire.

3. In a pencil as c aracterized, the combination with a casing having a removable tubular tip on its forward end and having a rear compartment, and having a magazine in the casing adjacent the tip to ieceive marking leads, of a grooved bar in the magazine extending into the rear compartment of the casing and havmg a tubular tip protrading through the tubular tip of the cas- Y ing, said grooved bar having am internal diameter slightly larger than each of the leads and the bar being of considerably less diameter than the inner diameter of the magazine to rovide a space for assage of leads from tie magazine into tie groove of the bar, a flange of approximately the length of the magazine extending from one of the edges of the groove of the bar to the casing, means securingtl'ie flange to the casing, a pro lling rod in the groove of the bar, a rotata le spiral wire in the rear compartment of the casing surrounding the grooved bar and the propelling rod and having spaced convolutions, a 1n"- protruding from the propelling rod an movably disposed between the convolutions of the spiral wire, and means operative exteriorly of the casing for rotatably adjusting the spiral wire to'move the propelling rod in said grooved bar.

This specification signed and witnessed this 24th day of November, A. D., 1923.

JOSEPH M. ANGELETTI.

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