US1913661A - Pencil - Google Patents

Description

June 13, 1933. F. c. DELI ET AL PENCIL Filed May, 8,` 1930 is uw m 4:30 stood by reference to the Patented .lune 13, 19.33

' UNITED jsTA'rl-:s

PATENT OFFICE FRANK C. DELI AND FRED D. "WOODS, OF CHICAGO, ILLINOIS, ASSIGNOIIS TO AUTOIOINT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS PENCIL Application tiled Hay 8,

Our invention relates topencils andmore particularly to mechanical pencils of a novel construction. A number ofobjectionsliave arisen to the common form of mechanical pencil, the most prominent being lack of ease and economy of manufacture, a relatively large number of inter-fitting parts, and lack of eilicient means of securing the tip to the holder or barrel in a firm yet easily rotatable manner. An object of our invention is to provide a pencil that may be simply and economically manufactured, the tip body and barrel being preferably molded. y A

A further object of our invention is to provide a pencil with a minimum number of` parts, thus simplifying the operation thereof, as well as the replacement of the leads by a user.`

A f urtherobject is to provide means comprising stuck' out wings or ears on the tip sleeve to provide .resilient contact of the tip with the barrel. A still further object is to provide a molded tip", the molded material being allowed to flow into openings in the sleeve whereby the sleeve and tip body are permanently united in a simple, yet eflicient manner.

4The invention will be more readily underdrawing, in which Fig. lis a longitudinal sectional view of a pencil constructed in accordance with our invention; v. Fig. is a cross sectional view taken on the lines 2-2 of 1; v Fig. 3 is a cross `sectional view takenv on the lines 3-3 of Fig. 1;

Fig. 4 is a cross sectional view taken on the lines /L-4 of Fig. 1;

Fig. 5 is a perspective view of the sleeve i in he tip, showingthe tip body in section; an

a Fig.v 6 is a sectional view on the lines"6-6 of Fig. 5. Y By'referring to the drawing, it will be seen that our invention `comprises a barrel 10,-.

having a-central aperture 11 th'erein, the upper portion 12 of which is non-circular 1n .cross section, a cap 13 closing the upper end,

accompanying 1930. 'seran No. 450,747. i

Vand a tip, generally'indicated at 14. The

the slots 18 for a purpose to be later described.

At the upper end of the sleeve we provide the ears 19 formed out of the metal in the sleeve. The ears stand out slightly from thetube and are resilient, and provide resilient -frictional Contact of the sleeve with the inside wall ofthe circular opening 11 in the bary rel 10. Located within the sleeve 15- and extending B5 a substantial distance therein is the threaded tube 20 having a continuous -spiral external thread', adapted to register with the apertures 18 in the sleeve. The. tube 20 rests at the bottom against the conical sides ol the tip 16 of the sleeve 15 and is secured therein in a manner hereafter to be described. A plunger 21 is provided having cooperativefunction between the tube and barrel by means of the external threads 22 at the lower. 75 i end thereof, and the non-circular head 23. The head 23 is adapted to be slidable withinV the non-circular portion 12v of the barrel.

The tip body 24 is formed by molding the same on to the tip assembly, t e body being suitably shaped to conform to the desired, contour of the tip, and having the flange 25' overlying the lower end 26 of the pencil barrel. When the body 24 is molded, a portion of the moldable vmaterial will be forced into theslots 18 in the sleeve, thus anchoring the threaded tube 20, the sleeve 15, and the tip body 24 together and permanently prevents. ing the separation thereof.

It will thus be seen that we have provided a pencil 'that is simple in construction, eco: nomically manufactured, providing an elli.- cient resilient contact of the sleeve inside the body, and a large bearing-surface at the lower end of the barrel, as well as an integral tip 95 assembly, the various parts of which are simply and economically Joined together.

In operation,` assuming a lead 17in place as shown, in Fig. 1, the tip assembly includ- Y the barrel opening, the head 23 of the plunger tting into the non-circular recess. Thereafter by simply rotating the tip and holding the barrel, or vice versa, the plunger, cooperating with the threaded tube, will advance therein forcing the lead out. Obviously the tip can be replaced orI removed in an osition ofadjustment of the parts.

- viously modifications may be made within the skill of the mechanic, and we do not Wish to be limited excepting as indicated in the appended claims.

, We claim:

1. In a pencil of the type in which the contained leadA advancing mechanism is actuated by rotation of the tip portion relative to the body or barrel, the combinationI of a sleeve projecting axially through the ti portion and terminating in an exterior le ing portion, a threaded tube confined within the sleeve, a tapered non-metallic body of material overlying the sleeve and constituting the means for defining the contour of the ti portion, and means providing a mechanica connection between the sleeve and the nonmetallic body of material to prevent relative rotation.

2. A pencil as characterized in claim 1, in which the sleeve is provided with an opening and the non-metallic material projects into said opening and serves to bind the parts together. l

3. A pencil as characterized in claim 1, in which the sleeve has a struck out wing adapted to provide frictional resistance to turnlng of the tip in the body.

4. In a pencil of the type in which the contained lead advancing mechanism is actuated by rotation of the tip portion relative to the body or barrel, the combination of a sleeve embedded and anchored in a tapered body of non-metallic material, said sleeve having a portion projecting rearwardly beyond the tapered body and adapted to project into the pencil body, said rearwardly projecting ortion having a wing struck out to provide f rictional reslstance to turning of the. tip portion in said body, a threaded tube lcooperating with the sleeve, and mean's for securing the tube to the sleeve. f

In testimony whereof we have aiixed our signatures.

FRANK C. DELI.

`FRED D. WOODS.l

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