US1263738A

US1263738A - Pencil-sharpener.

Info

Publication number: US1263738A
Application number: US5692415A
Authority: US
Inventors: James H Boye
Original assignee: Boye Needle Co
Current assignee: Boye Needle Co
Priority date: 1915-10-20
Filing date: 1915-10-20
Publication date: 1918-04-23
Anticipated expiration: 1935-04-23

Description

I. H. BOYE.

PENCIL SHARPENER.

APPLICATION FILED OCT. 20. 1915.

I. Qfm Patented Apr. 23, 1918.

taper end of the tube`4 (see Fi 10) has an ylnner arc-form wall 9, con orming to The wall is recessed,K grooved, or cut away, as indicated at 9", to

the lead of the pencil.

afford clearance back of the knife, so that any shavings which may chance to be drawn p' into the gulde (slipping between the knife-- ed e and the taper-portion of the pencil) wil be afforded egress through the recess, 9* and casing-opening 8.

The lead-pointing device C, in the form illustrated, comprises a pair of le-toothed, spring-held, jaws 10 and 11 which are disposed beneath or suspended from the top vwall of the casing-member 2. The file-members 10 and 11 have 'curved shank portions securely fastened-to the spring arms of a member 12 which has an attaching portion 13 secured to the top wall of the casingmember 2, as by rivets 13a. The springarms and the clipmay be integrally formed. The file-members 10 and 11 are made concavo-convex, with their'convex portions opposed to each other and the extremities sep-- arated, to afford between them a space l: which registers withA a hollow'l tapermg guide-member 15 carried by one of the lateral flanges of the cover 2. The corresponding flange of the box 1 is recessed to accommodate theguide-member 1,5. After the pencil D has been inserted in the guide B andturned therein to pare away the wood and leave-the lead d projecting through the small openin 8, the pencilis withdrawn from the device B and the lead is .then insertedthrough the guide 15, and the lead is pointed by a reciprocating motion thereof between the spring-held file-members 10 and 11. The divergent end-portions of the ilemembers are preferably smooth and the pointing of the lead is effected between the roughened convex portions. By the use of opposed, spring-held file-members it is possible to secure a rapid sharpening operation by a simple longitudinal reciprocation of the pencil, accompanied by occasional slight rotary oscillation.

The ine shavings, or wood-parin s, and the particles. of lead removed by a rasion are received in the same chamber. In practice, the lead particles are sifted through and mixed with the parings, and there is sufiicient aiinity between the wood and lead particles to prevent the lead filings from sifting out through the openings of the casin On occasion, when it may be necessary, the container may be opened by pressing together the rear end of the box-form memcesses laf embra e the guide-tube 4. Thel bers comprising the casing, thus permitting the contents to be dropped into a waste basket. The device may be freely handled, and the pencil-sharpening operatlon may be performed without soiling the hands.

A device of the character described may be manufactured cheaply and ,sold at a popular price.' Such a device may sell at the price of ten cents for instance, is highly satisfactory and fairly effective for the purpose intended, enabling even better results to be obtained than can be secured by the use of pencil-sharpening devices now on the market costing several dollars.

The feature of substantially preserving the lead in the wood-paring operation and performing the lead-pointing operation separately is an 'important one, as 1t enables the best results to be secured. Moreover, the feature of permittin the lead to protrude through the side of t e container-holder enables the length of the lead point to be gaged accurately and avoids unnecessary waste.' As

is well known, in machines 1n common use a very great waste of the pencil occurs through the inability of the operator to observe the result of the sharpemn operation and because of the fact also t at where the cutter operates directly on the lead, the lead is frequently broken over and over again before a satisfactory lpoint is obtained.

. bination of a container-holder and a pencilguide therein having a taper portion equipped with a knife so disposed with relation to the axis of the guide as to pare the wood and substantially preserve the lead, said container having openings within and registering with the ends of said guide.

2. A device of the character set forth,

comprising a pair of box-form Containern members liavingtelescopic relation, and a pencil-guide extending between the flanges of one of said members and having its ends registering with openings in said ianges, said pencll-guide having a taper portion equipped with a knife so disposed with relation to the axis of the guide as to pare the wood and substantially preserve the lead.

3. A device of the character set forth, comprising Va pair of telescopically-related box-form members having pivotal connections near one end, and a pencil-guide disposed between the lateral flanges of one of `said members and having its ends registering With openings in said flanges, said its ends registering with perror-ations in said pencil-guide havingataperportion equipped flanges, said pencil-guide having a taper With a knife. 1 portion equipped with a knife so disposed 4. A device of the character set forth, with relation to the axisiof the guide as to 5 comprising a air of telescopicallyfrelated pare the Wood and substantially preserve 15 box-form mem ers, one of which is larger the lead.

\ than and receives theother, pivotal connec- JS H. BUYlE. tions between saifl members near one end In presence ory Y thereof, and a pencil-guide extending between n 0. C. AvIsUs,

10 the lateral flanges ofsaid cover and having F. E. KAYLoR.