US1682072A - Pencil - Google Patents

Description

Aii 2s, 192s.- 1,682,072

- H. L. FISCHER PENCIL Filed May 25, 1925 Patented Aug. 28, 1928 HOWARD L. FISCHER, OF ST. PAUL,-MINNESOTA, ASSIGNOR TO- BROWN & BIGELOW,

OF ST. PAUL, MINNESOTA, A CORI-QRATIONOF.MINNESOTA.

PENCIL.

Application filed May 25, 1925.

My invention relates to improvement in pencils and v is particularly adapted for a peculiar construction of the lead ma-gazlne for the pencils so as to provide means to permit the leads to-be readily accessible when desired, withoutinterfering with the other parts of the pencil.

A feature of the invention resides in means associated with thecenter tube of the pencil and adapted to cooperate with the lead magazine to provide a'sliding closure adapted to slide into position to open the lead magazine and permitthe leads to be discharged from the same.

It is also a feature of the invention to provide a closure in the form of a collar member which is frictionally attached to the reduced center portion of the pencil in a manner ,so that when the closure is in position to close the lead magazine the leads cannot fall out of the same and the closure does not interfere with the operation of the pencil. This permits thecenter tube, with the leadmagazine formed as a part thereof,- to be inserted into the pencil barrel r casing and provides a simple, inexpensive ,slidable collar closure which is efi'ective in opening or clOSlng the lead magazine.

These particular features, together with other objects and particular formation of design will he more fullyasetiorth 1n the specification and claims,

In the drawings-forming a part of this specification:

Figure 1 illustrates my pencil.

Figure 2 is a cross section of the barrel or casing.

Figure 3 illustrates the center tube and operating member with the lead tube removed from the casing,- inenlarged illustration.

Figure {tie a perspective V ew of the con i ter tube and leadmagazhm inoperation.

Figure 5 illustrates the perspective of a different forniof the closure for themagazine. Figure 6 is a cross section on the line 6-45 of Figure 4 butiillustrating the closure in closed position. v

, Figure 7 is a crosssection-on the line77 of Figure 5, but illustrating the closure in closed position.

Figure 8 isa cross section similar toFigures 6and. 7 of a different form of the closure. 7 In the: drawings A represents my pencil Serial No. 32,788.

which is provided with a barrel 10 of an suitable material, such as wood, or other ma terial, to provide a covering for the propelling mechanismand the magazine of the pencil. The barrel 10 is formed with a writing tip 11, through which the lead 12 projects in writing position. i

The propelling mechanism B consists of a center tube 13 which is formed with a for-- ward reduced end 14, having a longitudinal slot 15 through which the lead carrier 16 proiects to engage with the threads 17. The threads 17 are formed in a tubular member which is attached to the writing tip 11 and 'which is held in the forward end of the barrellO.

The center tube 13 is formed with an en larged portion 18on the rear of the same. which is adapted to provide the lead magazine for extra marking leads 12. i k

The propelling mechanism B is provided with an operating head 20 which may be re cessed to receive the eraser 21 and which carries a spring friction sleeve 22, which engages in the wall 23 at the rear end of the pencil barrel 10 to hold the center tube 13 freely rotatable in thebarrel 10, by holding it against free longitudinal movement. lVhen the center tube 13 is removed the head 20 is engaged in a manner to disengage the spring sleeve 22 from the wall 23, while thelead carrier16 disengage's automatically from the threads 17 as the ends of the lead carrier 16 are formed of a spring metal and are not illustrated in the drawings because this feature is covered by other patents that have been granted to me herebefore.

The lead magazine portion 18 is formed with a longitudinal lead discharging slot 24 through'which the leads 12 fall when the lead magazine portion 18 is opened. To prevent the leads from falling out of the slot 24 I provide a closure collar 25 which is adapted to frictionally engage around the center tube portion 14. and which is provided with a closure tongue 26. This tongue 26 extends from the collar 25 the desired amount to closethe end of the slot 24, as is illustrated in Figure 6, to prevent the leads 12 from dropping out of the'slot 24.

The collar 25 is held longitudinally movable and the closure tongue-26 is provided with a shoulder 28 which engages against the shoulder 29! formed atone end of the slot 24 to prevent the disengagement of the collar 25 and to limit the longitudinal movement in one direction of the collar. The collar is limited in movement in the other direction by the shoulder 30 formed at the juncture of the reduced portion 14 and the enlarged portion 18 of the center tube 13.

A wall 32 is formed in one end of the lead magazine portion 18 which prevents the leads from sliding from the lead magazine portion 18 into the reduced portion 14 of the center tube so that, in other words, the wall 32 forms one end of the lead magazine chamber in the member 18, the other end of the lead magazine chamber is closed by the eraser 21, as the portion 18 extends into the end 20 as illustrated at 33 in dotted outline. Y

In operation the leads 12 are removed from the magazine portion 18 by opening the slot 24, when the collar is drawn down on the portion 14 until the shoulder 28 strikes the shoulder 29. This draws the tongue 26, with its free end in line with the wall 32, as illustrated in Figure 4, which opens the slot 24 long enough to permit the leads 12 to drop out of the same. In Figure 6 the tongue 26 is moved into position to close the end of the slot 24 to prevent the leads 12 being discharged out of the magazine.

In Figure 7 I have illustrated the closure collar 35 with the closure tongue 36 having a hook end 37 which projects into the slot 24 sutficiently to form an inclined wall which takes the place of the wall 32 in the magazine chamber portion 18, as illustrated in Figure 7, to provide means for closing the slot 24 and forming an end wall by the hook 37 to hold the marking leads 12 in'the magazine chamber portion 18. This construction permits the tongue 36 to slide along in the slot 24 and the end 37 forms an end wall for the magazine which can abut against the leads to hold them firmly in the lead magazine chamber portion 18.

In Figure 8 I have illustrated a closure collar 40 which is provided with a closure tongue 41 adapted to slide in the slot 24 of the magazine portion 18 and in this construction the tongue 41 is formed with a shoulder end 42 which engages against the shoulder 49, on the end of the wall 32, and thus permits the tongue 41 to be made considerably longer so as to close the major portion of the slot 24. This construction permits the length of the tongue 41 to be arranged as maybe desired, either long or short, and to close the slot 24 suflicient to prevent the leads 12 from dropping out of the same.

In Figure 5 the slot 24 is illustrated shorter than in the illustration in Figure 4. This construction may be preferred where the collar 35 or the collar 40 is used, as in each or" these constructions the collar can move along the portion 14 farther than in the construction illustrated in Figures 4 and 6. The

shoulder 28 limits the movement, and the tongue 26 projects forwardly beyond the free end beyond the shoulder 28, whereas in the construction illustrated in Figures 5, 7 and 8, the collars '35 and 40 can be moved a greater length.

This closure for lead magazines for pencils oi this type is important, as it provides a simple, inexpensive means of opening the lead magazine and owing to the construction of the reduced end of the center tube 13, such a construction is very adaptable without materially changing the center tube of the pencil. In operation the leads fall out as illustrated in Figures 4 and 5, and this permits free access to the leads. This construction obviates the necessity of removing the leads through the opening in the eraser end of the magazine chamber 18 and as it is necessary to remove the center tube 13 to fill the lead carrier 16 with a new marking lead anyway, this makes a very practical means of getting a new lead from the magazine.

In accordance with the patent statutes I have described the principals of operation of my invention, together with the drawings illustrating the best embodiment thereof, however, I desire to have it understood that these drawings are only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth.

I claim:

1. A lead magazine closure for a pencil including a slidable collar having a closure tongue adapted to partially close a slot formed in the lead magazine in one position, and to open it in the other position.

2. A closure for a pencil lead magazine, including a spring collar, and a closure tongue formed on said collar.

3. A closure for a lead magazine comprising, a slot in said magazine a collar adapted to frictionally engage about one end of said lead magazine, tongue means formed onsaid collar whereby when said collar is moved longitudinally the lead magazine is opened to discharge marking leads out of the same.

4. A pencil including a barrel, a lead propelling means having a magazine adapted to be separated from the barrel, a closure for the magazine carried thereby, operable longit-udinally to open the magazine and drop a new marking lead out of the same.

5. A closure for a lead magazine for a pencil including a spring collar, a slot formed in the lead magazine through which the leads can be discharged and a tongue formed on said collar adapted to extend over a portion of said slot.

6. A closure for a pencil lead magazine consisting of a sleeve, a tongue projecting from said sleeve an opening in the magazine into which said tongue is adapted to extend to close one end of the samesaid sleeve being operable in a manner to move said tongue into open position so that leads may be discharged out of the lead magazine.

7. A pencil including a center tube opera-ting member, an enlarged end formed on said operating member to provide a lead magazine, a reduced end adapted to form a lead carrier for the Writing lead in marking position in said pencil, a lead discharge opening formed in the magazine portion of said center tube and means movable longitudinally to open and close said lead opening.

8. A pencil having a lead magazine an opening formed in said magazine and longitudinally reciprocable collar means associated with said lead magazine in a manner to open and close said opening.

HOWARD L. FISCHER.

Images