US1982889A - Pencil - Google Patents

Description

E. TU RNBERG E R Dec. 4, V11934.

' PIENCIL Filed Aug. 3, 1951 ArfroRNEY hameau 4, 1934' massa' 1 .Edward"Illrnlnerger,NowarhNJ.v

Anuman am s, 1m, sum Ng.- suses s Hy inventionrelatesto pencils and more particularly to mechanical pencils consisting of a holder provided with a compartment within which there is a container for holding a Supply of leads and for holding an eraser, together with mechanical means for holding and'feeding a lead at the writing end of a pencil. There are several distinct. features in my invention, all of which combine to produce a very simple, eifective and economical device. Y y

One object of the invention is to provide an inner tubular member adapted tobe held within the shell or barrel lof the pencil and to be an eraser ttached to one end thereof.

prevent them from adhering to the inner surface t removed therefrom and this member or magazine is adapted to hold a supply of leads and to hold This member has one or more apertures in the end opposite to that in which the eraser is held and l the end having the aperture or apertures is adapted to be inserted into one of the barrel members so that'the eraser may be used without removing the magazine from the barrel member. The leads maybe individually removed from the in conjunction with the tubular lead magazine,

an eraser as above described, against which the leads at 'one endmay rest and to provide a rubber or soft cushion within one of the barrel members and against which the oppositel ends of any I L of the leads which project through the aperture or apertures in. the magazine will strike or rest.

Thus, the opposite ends of the leadswill not strike or rub against hard or rigid materials and there is less likelihood cf their being broken.

Another object of my invention is to provide 'means for facilitating the removal of the individual leads from the lead magazine'. Thislis in the form of a sliding member, preferably in the.

nature of a metallic sleeve which may slide back and forth longitudinally within the lead. magazine and by disturbing the leads, tend to lead them toward one end of the lead holding member and of the magazine. This sliding sleeve is also adapt l ed to align the leads with the discharge aperture or apertures, the latter M1118 of!- the axis of the magazine so that the leads are by the Sleeve in line with the discharge aperture or apertures, By simply shaking or tilting the magazine, a single -lead will feed If there are two discharge apertures arranged opposite each other, each time the tube is shaken or tilted at least one lead will be projected through one of. the apertures and very often a lead'will be projected through each of the apertures, in which latter case one will be grasped and removed and the other being allowed to fall back into the magazine.4 Other advantages of the invention will be set forth in the following de tailed description. i 65 In the drawing forming part of this application,

Figure 1 is an elevational view of a pencil embodying. my invention, l Figure 2 is a longitudinal, sectional view taken '7o ontheline2-2ofIiigure1, f Figure 3 is an assembly view showing theseveral parts -of the device in the order of their assembly,

Figure 4 isa cross sectional view taken on the 1ine44 of Figure `2, and

Figure 5 is a cross sectional view takenon the line 5 5 of Figure 2.

As far as my present invention is concerned any mechanical device for projecting and retracting the lead at the writing end of the pencil may be used, and I have omitted showing details of this portion of the device. I have shown a barrel consisting of the section 1 to which theconical portion 2 of the lead operating device'is attached, together with a tubular member 3 which forms ythe upper or second section of the barrel. This latter'member usually has a solid or closed end 4 and it also has a longitudinal bore 5 into which tightly iits the metal sleeve 6 the latter projecting at 7 atA the open end of the barrel member so that it fits slidingly into the metal lining 8 which is fitted into the bore 9 of the iirst barrel section 1. 'Ihis metal sleeve 6 forms both a lining for the' bore of the member3 and a also as a means for detachably holding the barrel members together. vThe ring 10 shown surrounding the o'pen end of the barrel member 3 is partly for ornamental purposes and partly to prevent the barrel member from splitting near its open end. Within the metallining 6 of the barrel member 3 I have applied an abutment member 11 of 'soft material, preferably rubber, which is -pressed into the lining member and remains permanently in its inner end, as shown in Figure 2. y

The lead holding magazine is shown as a cylindrical member 12 having a longitudinal bore li3 and adapted to slide freely inn and out of 4the lining member 6. One end of this tube 12 110 lis, open and the eraser 14 is adapted to nt snugly .into this'open end and izo-project' partly beyond it so that it `may be used for erasing purposes.'

The opposite end of this tube has an end wall 15 'provided with one, or more apertures 16 of sufcommunicate with the bore' 13 of the magazine 12. The several leads 17 are adapted to be retained within the tubular member 12 between the eraser 14 and the end wall 15. To prevent the leads from adhering to the'interior surface of the magazine and entanglingwith each other and failing to feed down to the discharge aperturesl 16, I have provided a member' for urging the leads toward the latterV apertures; and this is shown in the form of a cylindrical sleeve 18, preferably made of metal and of sulcient weight to slide kfreely back and forth within the bore 13 fof the tube 12 when the latter is tilted.v The leads extend through the bore of this cylindrif calagitator as shown in Figure 2. 'I'he thickness of the wall of the agitator is such as to cause its inner surface to register with the outer portions of the 'apertures 16 so that wheny the agitator is resting against the end wall l5 ofthe tube 12 there will bea tendency for at least one lead to be presented in line with each discharge aperture 16, but` if leads are not presented to both apertures, at least one lead can generally be presented in line with one of they apertures.

It will be noted that rthe lead magazine is applied to thebarrel member 3 so that the end wall 15 having the lead discharge apertures -lil is enclosed within the barrel member, whereas the end having the' eraser projects from this barrel member. When the device is used for writing as shown in Figure 1, the two barrel membersv are fitted together withthe lining member 6 of one barrel member frictionally engaging within the bore'of the lining member 8. In this condition the pencil may be used for writing with one of the leads supplied to the mechanical feed device, as'shown at 19. It may be noted that this type of pencil belongs to the class wherein individual leads are supplied to the mechanical feeding device by withdrawing a lead from the magazine tube 12 and placing it into the mechanical feed device from the outside.

' If it is desired to use the eraser the barrel member 3 is simply detached from the barrel member 1 and the lead magazine tube. will remain with the `barrel member 3 and it maybe manipulated for the purpose of rubbing the projecting end of the'eraser over the pencil marks which are to be erased. After the eraser has been used the barrel members may be attached together as shown in Figure l. If it is desired to place a new lead in thernechanicai` feed device, the barrel members are separated and the lead magazine tube 1 2 ,is withdrawn from the lining member 6, or in other-words, it is detached from the remainder of the pencil. The lead magazine is then tilted so that the'end wall 15 is pointed down and this causes the slider .18 to move down towardv the end wail 15 and to urge the leads in the same direction.. t i

Usually, at least one lead, will line up with one of the discharge apertures 16 and will project partly through it so that the lead may begrssped in fthe fingers and entirely removed from the magazine.` 'This lead may be presented from the.

outside to the mechanical feed device in the usual way. .It will be noted that in removing the lead from the magazine it is unn to detach the eraser 14 from the end of the magazine.

When the magazine is in place within the bar rel, the leads at one end may rest against the eraser 14 which is soft and will not injure the leads. If a lead should extend through one or both ofthe apertures 16 it will rest 4'against the soft cushion 1l and this end of the lead will not be damaged.

Having described my invention, what I claim is: 1.- A barrel composed of separable hollow sections, one of said sections-having a closed end. a

lead magazine, a removable plug for closing one endI of said magazine and projecting beyond the end thereof, said 4magazine having its opposite end provided with an aperture to permit the individusl leads to be withdrawn therethrough, said` lead magazine being insertable into said second mentioned barrel section so that the plug projects from'said second barrel section and with its apertured end disposed toward the apertured end of said second mentioned barrel section.

2. A barrel composed of separable hollow sections, one of said sections having a closed end, a lead magazine, a removable plug for closing one end of said magazine and having its opposite end provided with an aperture to'permit the individual leads vto be withdrawn therethrough, said 101iA magazine being insertable into the said second mentioned barrel section with the apertured end directed toward the closed `end of said 'second mentioned barrel section.

3. A barrel composed of separable hollow sec- 110 tions, one of said sections having a closed end, a soft abutment member adjacent said closed 'end of said second mentioned section, a lead magazine, a removable plug for closing one end thereof, said magazine having its opposite end provided 116 with an aperture to permit the individualleads to be withdrawn therethrough, said lead maga-- zine being insertable into said second mentioned barrel section so that said abutment member will lie adjacent the apertured end of said magazine. 1W

4. A barrel composed of separable hollow sections, one of said sections having a closed end, a lead magazine, a removable plug for closing one end of said magazine and projecting from one end thereof, said magazine having its opposite end provided with an aperture disposed eccentric to the bore of said magazine to permit individual leads to be withdrawn-therethrough. said .lead magazine being insertable into said second mentioned barrel section whereby the lead discharging l end of said magazine is directed'toward the closed end of said second mentioned banel section.

5. A magazine for holdingfsupplyof leads and adapted to be inserted into the barrel of a' pencil, said magazine having 'a dischargeaperture for 135 the individual leads and a mnber freely slidable in said magazine for agitating the. leads.

6. A.` lead magazine f or pencils including a tubular body adapted to hold a supply of leads and having an end provided with an aperturefffor 140 relation to the axis of the magazine and the in- 150'- iccl for pencils, comprising s tubular terior surface of said sleeve substantially coincidingywith` theouter portion of said discharge aperture, whereby said sleeve vwill direct :the leads Itowards said discharge aperture.

8. A barrel composed ofv separable hollow sections, one of said sections having a-closed end, a

lead magazine; la'reioxmlole plugior closing lone end of said magazineiand projecting from one end thereof, said magazine having its`opposite' end provided withan aperture to permitindividual leads to be withdrawn therethrough, said a cylindrical sleeve disposed in lsaid magazine and adapted to slide freely therein co-operating to saltate the leads 1n said anato disaid discharge aperture.`

rect their; towards sul .I usw.

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