US1420539A - Pencil sharpener - Google Patents

Description

A. J. FUNSCH. PENCIL S HARPENER.

APPLICATION FILED SEPT. 2. I920 PatentedJune 20, 1922 3 SHEETS-SHEET v A. 1. FUNSCH.

PENCIL SHARPENER. APPLlCATlON FILED SEPT. 2, 1920.

Patented June 20, 1922.

A. 1. FUNS C H PENCIL SHARPENER. i I

. APPLICATIQN FILED SEPT. 2, 19 20- 1,4 2 O,539. Patented June 20, 1922.

. 3, SHEETS-SHEET 3f TET orricai AnAr/ J. FUNSCI-I or BROOKLYN, NEW YORK.

PENCIL SI-IARPENER.

' Application filed September T 0 all whom it may concern:

Be it known that I, ADAM J, F NsoH, a citizen of the United States of America, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Pencil Sharpeners, of which the following is a specification. I

The object of the invention is to provide a pencil sharpening device particularly adapted for use in drafting oflices or rooms wherein pencil points of different forms or types.

are necessary in connection with the work which involves the'use not only of pencils but of leads for compasses and the like, and with this object in view, the invention consists in a construction and combination of parts, of which a preferred embodiment is shown in the accompanying drawings, wherein i Figure 1, is a plan view of an apparatus embodying the invention with the covering or casing omitted. s

Figure 2, is a horizontal sectional View of the same.

Figure 3, is a vertical sectional view on i the plane indicated by the line 33 of Figure 2.

Figure 4, is a view partly broken away of the outer casing. of a lead holder adapted for use in connection with the apparatus.

Figure 5, is a view of the interior lead holding tube.

lVithin a suitable casing or housing 10 which is preferably divided by transverse partitions 11 into compartments there is mounted the stock sharpening mechanism consisting of a stationary master gear 12 supported by a partition 13 and a revolvable yoke 14 upon the parallel arms of which are revolvably mounted the conical cutters 15 having pinions 16 which mesh with the master gear 12 which is internally toothedto the end that when the yoke is rotated by means of its spindle 17 mounted in a suitable bearing in the front wall of the casing as by means of a detachable crank 18, the cutters are rotated to act upon the wooden stock of a pencil indicated at 19. The cutters 15 are spaced apart at their bases sufliciently to avoid the contact with the lead 20 of the pencil which is thus left unsharpened or unreduced as indicated in Figure 2, the partition 13 being provided with a suitable opening 21 in which the pencil may be pro- Spccification of Letters Patent. 'Patgnted 20 2, 1920; Serial No. 407,716.

the. stock. The pencil is held in proper position in relation to the cutters by means of a clamp of which the jaws are held in engagement with the inserted pencil by means of a spring 23, said jaws being operable by the manipulation of a finger hold 24 projecting to the exterior of the casing. r

The rear ends ofthe yoke 14 are headed as shown at 25 for engagement with a guide 26 secured to the rear Wall of the casing and the arms of the yoke are connected at intermediate points by a transversely disposed bar 27 provided. with a seat 28 in registration with. an opening 29 in the rear wall of the casing to receive the pencil and hold it against vibration during the cutters thereon. i I a In one of the adjacent compartments of the casing there is located a pencil point sharpening means consisting of the, oppositely revolvable cylindrical members or rolls 30 having roughened surfaces, the spindles 31 of said rolls being provided. with intermeshing gears 32 serving to cause rotation of the rolls in opposite directions, there being an operating crank 33 connecte'd'with one of the spindles to permit of imparting rotary motion to thesame. Carried by the lid or cover 34 of the casing in operative relation to an opening 35 therein, is a penthe operation of I oil clamp 36 and a limiting bracket 37 having a guide opening 38 for the reception of independently of the pencil is to be sharpi ened, it should be arranged in a holder such as indicated in Figures 4 and 5, consisting of a shell 39 having an encased tube 40 provided with the spring jaws 41 for clamping the lead when forced into the tapered portion 42 ofthe shell. The tube is threaded as at 43 for engagement with corresponding interior thread 44 in the shell and the turning of the tube may be effected by means of a thumb head 45 milled as indicated.

In another compartment of the casing there is arranged a lead reducing or sharpening device consisting of a revolvable yoke 46 having a spindle 47 to which is attached an operating crank 48, the arms of the yoke being headed as indicated at 4:9 for engagement with an annular guide 50 supported by a partition 51 in the con'ipartn'ient. The arms of said yoke carry the coned abrading or sharpening elements 52 disposed in such relation that when the yoke is turned. a pencil 53 being arranged in the holding clamp 54, a sharp or cone point is formed thereon; while in still another compartment of the casing there is mounted a spindle 55 also having an operating crank 56 and carrying a single abrading cone 57 disposed in operative relation with a pencil socket 58 arranged in registration with a pencil clampr59 for holding the pencil as indicated at 60 and designed to form a chisel point on the lead portion of the pencil.

Means for preventing the insertion 01" the pencil far enough tobring the point or lead sharpening means into engagement with the stock of the pencil, or in other words, the wooden bark thereof, are provided in connection with the device above described.- For instance, in transverse relation of; the arms of the yoke 46 there is employed a limiting bar 61 having a tapered opening 62 which receives the tapered portion ot the stock while a similar bar 63 is carried by the casing in operative relation with, the pencil socket 558 for a similar purpose.

Thus by means of the mechanism described, the wooden stock of the pencil may be sharpened without affecting the shape of the lead after which the lead may be reduced to a point of the desired shape, that -is to say, either wedge-shaped or coned or chiselled to suit the purpose for which the pencil is to be employed and the independent lead intended for use in connection with compasses. and the like maybe correspondingly reduced or pointed by first positioning the same in the holder provided as a substitute for the usual pencil stock and adapted to maintain the lead in proper relation to the cutting means. 1

The operating cranks or handles by which the spindles of the different parts of the apparatus are adapt-ed to be rotated are preterably detachably secured to the spindles by means of removable pins 64 engaging bifurcated extremities 65 of the spindle oi the is claimed as new and useful is 1. A pencil sharpening apparatus having a revolvable yoke provided at one end with a spindle and having parallel arms engaged at their free ends with an annular guide, rotatable cutters mounted upon the arms of said yoke, and means for communicating rotary motion to the spindle of the yoke.

2. A pencil sharpening apparatus having a revolvable yoke provided at one end with a spindle and having parallel arms engaged at their tree ends with an annular guide, rotatable cutters mounted upon the arms of said yoke, a limiting bar disposed in transverse relation with the arms of the yoke and having a taper opening which receives the tapered portion ot the pencil stock, and means for communicating rotary motion to the spindle of the yoke.

A pencil sharpening apparatus having a revol'vable yoke provided with spaced parallel arms formed at their extremities with heads, an annular guide with which said heads engage, a transverse element spanning the arms of the yoke intermediate their length, cutters mounted on the arms of the yoke, a spindle extending from the yoke in a direction opposite the arms, and a crank for imparting rotary motion to the spindle.

A pencil sharpening apparatus having a revolvable yoke provided at one end with a spindle having its parallel arms engaged at their free ends with an annular guide, rotatable cutters mounted upon the arms of said yoke, means for communicating rotary motion to the spindle ot the yoke, and pencil holding means including a clamp for supporting a pencil with its extremity in coextensive relation with the axes of the orbits of said cutters. V

In testimony whereof he afiixes his signature.

: ADAM J. FUNSCH,

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