US1666405A - Magazine pencil - Google Patents

Description

April 17, 1928. 1,666,405

M. H. `CALDWELL ET AL MAGAZINE PENCIL Filed July 26. 1926 i Patented Apr. 17, 1928.

UNITED STATES PATENT oFFicE.

MYRoN H.

CALDWELL AND IDA GREEN, OF NEW YORK, N. Y.; SAID GREEN ASSIGNOR TO ARTHUR C. E. HAMILTON, OF MOUNT VERNON, NEW YORK.

MAGAZINE PENCIL.

Application mea .Tuiy as,

This invention relates generallyl to pencils of the magazine type` this inventionhaving more particular reference to a. novel type of magazine lead pencil. This invention has for an object the provision of an improved magazine lead pencil of novel construction and arrangement of parts.

For further comprehension ofthe invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims .1n which the various novel features of the invention are more particularly set forth.

Fig. 1 of the drawings, is a side elevational view of our improved magazine lead pencil.

Fig. 2 is an enlarged longitudinal central sectional view thereof, taken on the line 2 2 of Fig. 1.

Fig. 3 is an enlarged transverse sectional \view taken on the line 3-3 of Fig. 2.

Fig. 4 is a similar view taken on the line 4--4 of Fig. 2. f U

Fig. 5 is a similar view taken on the line 5 5 of Fig. 2.

Fig. 6 is a fragmentary sectionalview of our improved magazine lead pencil.

Fig. 7 is a detail sectional view of the lead receiving means, as embodied 1n our improved magazine lead pencil.

Fig. 8 is a side view of the ejecting'cyhnder and some correlated parts used in our invention.

Fig. 9 is a perspective view showing certain details of the pencil.

As here embodied our improved magazine lead pencil comprises a tip member 10, ot cone shaped construction, and provided with an axial aperture 11, adapted to slidably receive the lead 12. The tip member 10 is slotted, as at 13, at its extremity, which is bent or formed inwardly, so as to frictionally hold or retain the lead 12, as shown in' Fig. 6 of the accompanying drawings. The tip member 10 is threadedly attached to the bushing 14, of hollow cylindrical construction adapted to slidably receive the tube 15, which has an axial aperture adapted to receive the lead 12. The tube 15 is provided with a tapered enlargement 16, slotted as at 17. The receiving member 18, formed concave, as at 19, is threadedly attached to the tube 15. The receiving member 18 is provided with slots 18', adapted to receive a Spanner wrench or the like. The receiving f isnorma 1926. Serial N0. 124,813.

member 18 locks the limiting element 20 which has projecting elements 20', adapted to slidably engage in slots 14' formed in the bushing 14. The tube 15 has slidably positioned thereon, a locking sleeve 22, adjacent to the tapered enlargement 16. The tube 15 ly held in inwardly extended position by the expansion spring 23 positioned or wound on the tube 15.

The bushing 14 is threadedly attached to the barrel 24, of hollow cylindrical construction. The collar 25 is threadedly attached to the barrel 24, and is provided with an axial aperture, adapted to rotativel support the cylinder 26, which is rotative y held in the collar 25by means of snap rings 27 and 28, engaged 1n grooves formed on the periphery of the cylinder 26. The attaching collar 29 is positioned on the cylinder 26 adjacent to the said collar 25, and is held in position by the above mentioned snap ring 28. TheI collar 30 is threadedly attached to the cylinder 26, and secured by cementing to the end piece 31, of hollow cylindrical construction,

and which has attached thereto a cap member 32, adapted to enclose or cover the end of our improved magazine lead pencil. The cylinder 26 has formed or cut at its free extremity, projecting elements 33, curved at one side thereofy to form cams.

T he above described constructionis such as will permit the leads which are placed 1n the cylinder 26, to be shaken into the tube l5, by means of the concave portion 19, and which will permit the tube 15 when forced outwardly by the cylinder 26, when the end piece 31 is turned or rotated, to release the lead 12, and to force the said lead 12 forward, the lead 12 then being held in an extended or usable position by means of the tip member 10. .i

The clip 40 has attached or formed at its free extremity an enlarged portion 41, and is formed or bent as at 42, so as to engage in a slot 40 formed in the barrel 24, so as to have its extremity positioned inside the barrel 24, so as to engage in a recess or opening 29 provided in the above mentioned attaching collar 29,'so as to securely hold the enlarged portion 41 of the clip 40, the end of the bent portion 42 of the clip is beveled to engage the beveled end 25 of collar 25, thereby .forcing clip 40 against the barrel 24, as a means of permitting the clip 40 to hold our improved magazine lead pencil in a coat pocket or the like, when not in use.

While we have above described the preferred form, construction and arrangement of the several elements employed, it will be understood that the device is, nevertheless, susceptible of considerable modication therem, and we therefore reserve the privilege of resorting to all such changes as may be fairl embodied within the spirit and scope o the invention as claimed.

Having thus described our invention, what we claim as new and desire to protect by Letters Patent of the United States is as follows:

l. In a magazine lead pencil, the combination with a pencil casing having arranged therein a slidable tube provided with a tapered portion urged against a locking sleeve by a spring to clamp a lead in position, passing therethrough, oi a bushing attached to the casing, s'lidably supporting the tube,A

and formed with slots, a limiting element secured to the inner end of the tube, and provided with projecting elements slidably engaging in the said slots, and a cylinder formed with projecting curved cam elements 'engageable against the projecting elements ofthe limiting element, the said cylinder being rotatably mounted Within the pencil,

and adapted for manual turning, to move the tube against the action of its associated spring to unclamp the lead passing through the tube.

2. In a magazine lead pencil, the combination with a pencil casing having arranged therein a slidable tube provided with a tagered portion urged agalnst a locking sleeve y a spring to clamp a lead in position, passing therethrough, of a bushing attached to the casing, slidably supporting the tube, and formed, with slots, a limiting element secured to the inner end of the tube, and provided With projecting elements slidably engaging in the said slots, and a cylinder formed with projecting curved cam elements engageable against the projecting elements of the limiting element, the said cylinder being rotatably mounted Within the pencil, and connected with a rear cap rotatable on the end of the pencil, and adapted for manual turning, to move the tube against the action of its associated spring tobunclarnp the lead passing through the tue.l

in testimony Whereoie we have axed our

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