US1495664A - Pencil - Google Patents

Description

G. B. BERGEN PENCIL Filed may 20. 1920 llllh I Patented May 27, 1924.

GEORGE E. BERGEN, OF MILWAUKEE, WISCONSIN.

PENCIL)- Application filed May 20, 1920. Serial No. 382,782.

To all whom it may concern:

Be it known that I, GEORGE a citizen of of Milwaukee, in the county B. BERGEN,

the United States, and resident of Milwaukee and State of Wisconsin, have invented cer- Improvements in a following is a speciils and parto be very One of the objects of my invention is to provide a pencil of the utmost simphcity,

both as to manufacture and use,

and one which may be manufactured relatively very cheaply. In the pencil here disclosed I provide means for securely retaining short sections of lead and for feeding gravity following a very of the tip.

the lead by simple movement Means are also provided for readily removing the tip in order to enable the removal of any refractory leads which may become wedged or otherwise held within the lead tube.

A further object is to pro vide. simple means for retaining the reserved supply of leads, such means being so constructed as to permit of the removal of but a single lead one time and arrai'iged single lead will not whereby the fall out but will merely project, permitting the grasping of the lead by the fingers.

This element is so constructed that the desired action will talre place held. A further object is to pr in whatever position the pencil 1S ovide a simple and practical form of an eraser-holder, the construction being such that the eraser may be caused to project the required distance beyond the holder as the rubber is worn away.

The invention will be more re stood by reference to the ac drawing in which:

adily under-- comp anyin g Fig. 1 is a side elevation partly in section showing a pencil constructed in accordance with my invention;

Fig 2 is a bottom plan view of one end thereof Fig. 3 is a sectional view somewhat en- .il arged on the line 33 of Fig. 1;

' Fig. l is a sectional view on the line 44 of Fig. 1; and

Fig. 5 is a composite view showing the various parts in perspective, sh relative positions.

owing their Figure 6 is a plan View of the cylindrical portion 20 of the tip showing the grooves 24, 25.

In the drawings it will be seen that 1 provide a body 10, which is preferably composed of wood, or other fiber, in order to give the required lightness. The body has a tapered end 11 provided with a concentric circular recess 12 therein. The formation of this recess results in the production of a reduced tapered portion 13 having a central longitudinal opening 14 therein. Within the recess 12 is mounted a sleeve 15 having a projection 16 which is pressed in the side thereof and also provided with a backwardly bent flange or skirt 17 which overlies the thinned ed ge of the wood, which surrounds'the recess 12. Mounted within the central opening 141 is a split tube 18, of spring metal, having a slightly tapered end portion 19. Mounted within the sleeve is a tip having a cylindrical portion 20 and a tapered portion 21. The tip is hollow and the opening 22, in the end thereof, is of less diameter than the normal diameter of the tube 18 and of substantially the diameter 01 the leads employed, one of which is indicated at 23. The tip is provided with a helical groove 24, in the cylindrical portion thereof, and with a longitudinal groove 25 which commliinicates with the helical groove at the center thereof.

The arrangement is such that as the tip is pressed within the sleeve 15 the groove 25 is caused to register with the projection 16, thereby guiding the projection into the helical groove 24. During normal operation the tip is not removed but is merely rotated to clamp and release a lead by contracting and permitting the expansion of the slotted tube 18. However, should it become necessary to inspect the tube for the purpose of removing any leads which may have been retained therein the tip is rotated and pulled slightly. This will insure the engagement of the projection 16 with the exit portion of the groove 24 and permit of the ready removal of the tip.

The opposite end of the pencil is constructed to provide a cylinder 26 which is crimped as at 26 into engagement with the wood body of the pencil, the cylinder having an open end. Mounted upon the cylinder is a sleeve 27, the end 28 of which is cr1mped into engagement with the groove formed at 26* by crimping the cylinder into engagement With the body. Both the cylinder and sleeve are provided With elongated slots 29, 30, adapted to he brought into, register by the rotation of the sleeve. These slots are of a Width less than the di ameter of tWo leads and thereby insure that but a single lead may he removed or inserted at one time. lhe slots are so positioned with relation to the ends of the chainher and With relation to the length oi the leads that when the pencil is tilted Wi' h the slots open the point of a single lead will drog through the opening hut Will not all out. This requires that the slots shall he properly positioned in the relation described.

In order to insure the tiltii'ig action l. provide ledges on short transverse ribs 30, 30 at opposite ends of the slot 530 in the cylinder 26. it will he apparent that it is .in'rniaterial in which direction the pencil is tilted When a lead is to he iviihdrr m'n as the construction at both ends of the slot the same; a lead is shown in dotted lines in a reverse position to those in full lines.

The end 31, oi the cylinder 96. is threaded as shown, and provides'a sent or socket for a rubber eraser, indicated at 32. A threaded sleeve 33 surrounds the eraser and ei'igages With the threaded end and by rotating this sleeve it will he seen that more or less of the eraser may be exposed as desired. It Will he noted also that the eraser forms the closure for the otherwise open end of the cylinder. This however, may he varied. it desired. by providing; an end wall for the cylinder.

Obviously modifications niav he made in the construction shown but I do not Wish to be limited except as indicated in the appended claims.

I claim:

1. In a pencil, the combination of a slotted t'iher hotly having 2. tapered end, a rclati .l" irt slotted tnhe composed oi" pringz rm and seated Witlii'z'l a concentric. aperture in said tapered end, and a coi'iicnl tip n'ionnted on said t )ered end the t ing' an opening oi" iess diameter than normal diameter said tip the tube hit-J- ing a CLUE). groove and a projection fixed with rela n to said hod and adapted coopernte i1 "lie p'roo' e whereby to cause lofted tube.

motion of a ho nil sleeve seated sxaio sleeve hav n into said a prqgcctnnn dricai portion s eeve and j and v.: l groove cmnmnnieating with the helical groove saith grooves li ing adapted to cooperate with said promounted within end oi the liodv the tnhe he iig toin c-scd of spring metal and being; adapted t o he compressed hy the rotation of tee t to clamp it lead Within said till i snhstantinll as dew-rihed.

3 in a pencil. the roinhimition 0'? a. liher hotly having a tapered ene. 1 provided with it concentric circular recess, a metal. sleeve mounted in said z hollow tip hnvino' a cylindrical portion adapted to he received Within said sleeve. the tip "ind sleeve heinp; provided with a i-miperat no groove and projection so constructed as to enable the removal of the tip. end a slotted tnhe mounted Within the ta pered end. the (nine and. tip being so constrncted that a lead is adapted to he clamped Within the tube h the rotation o't said tip snh hentially as descrilwd.

Signed at Chicago. lll. this %th day oi i lav, 1920.

'JEORGE B,

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