US2510248A

US2510248A - Portable pencil sharpener

Info

Publication number: US2510248A
Application number: US663919A
Authority: US
Inventors: Ira S Peightel
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-04-22
Filing date: 1946-04-22
Publication date: 1950-06-06
Anticipated expiration: 1967-06-06

Description

June 6, 1950 l. s. PEIGHTEL PORTABLE PENCIL SHARPENER 2 Sheets-Sheet l Filed April 22, 1946 ATTD RN EYS l. s. PEIGHTEL 2,510,248

PORTABLE` PENCIL SHARPENER `[une 64 1950 Filed April 22, 1946 2 Sheets-Sheet 2 y I INVENTORQ fra fz'fe/ ATTE! EN EYB Patented June 6, `1950 UNITED STATES PATENT OFFICE PORTABLE PENCIL SHARPENER Ira S. Peightel, Harrisburg, Pa. Application Aprilv 22, 1946, vSerial No. 663,919

The invention relates to a pencil Sharpener, and more especially to a portable hand supported pencil sharpener.

The primary object of the invention is the provision of a Sharpener of this character, wherein by use of a pair of milling cutters of the roller type, ball bearings and an automatic centering and feed control a pencil will be automatically held and fed to the cutters, which latter are manually actuated for the sharpening of the said pencil, the Sharpener being self-contained, and it is of novel construction and unique in the as- Sembly of the parts thereof which are few in number.

Another object of the invention is the provision of a Sharpener of this character, wherein a novel form of pencil feeding and gripping action is involved, self-contained in a case, which may be of unlimited design and constructed from plastic materials, chrome plated brass or silver finish or enamel, the cutttings being held within the case until discharged therefrom, and the Sharpener as a whole usable as a paper weight, and at all times handy for service as a Sharpener.

A further object of the invention is the provi- `Sion of a Sharpener of this character, wherein it is automatic in centering, feeding and the holding of a pencil therein during the sharpening operation, thus eliminating the manual holding and feeding of the pencil during the sharpening period, the centering, feeding and holding assembly being wholly conned within the case of the Sharpener.

A still further object of the invention is the provision of a Sharpener of this character, which is simple in construction, thoroughly reliable and 3 Claims. (Cl. 120-96) eiiicient in operation, strong, durable, readily and easily operated, portable, compact, neat in appearance, and inexpensive in manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter described, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention and pointed out in the claims hereunto appended.

In the accompanying drawings:

Figure 1 is a side elevation of the Sharpener constructed in accordance with the invention;

Figure 2 is a sectional view taken on the line 2-2 of Figure 1 looking in the direction of the arrows;

Figure 3 is a sectional view taken on the line 3-3 of Figure 2 lookingin the direction of the arrows.

Figure 4 is a sectional view taken on the line 4-4 of Figure 2 looking in the direction of the arrows;

Figure 5 is a sectional View taken on the line 5-5 of Figure 2 looking in the direction of the arrows but showing the device in position to receive a pencil;

Figure 6 is a sectional view taken on the line 6 6 of Figure 2 looking in the direction of the arrows; Y

Figure '7 is a perspective view of one spring retainer clip;

Figure 8 is a respective view of the feeder follower of the pencil clamp.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings, the pencil Sharpener constituting the present invention, comprisesa two part cylindrical casing denoted generally at A, having the aligned parts I IJ and I I respectively, which are closed permanently at their ends, While the inner meeting ends are fully open to each other, and in this aligned condition are movable relative to one another. Within each part I'I) and I I is a cylindrical shell I2 and I2', respectively, and the shell I2 within the part I0 being fixed thereto in any suitable manner when installed therein. The part II is removably fitted onto the shell I2 therein and these are frictionally held together when intertted with each other. l

In the part II is arranged a cutting mechanism, that is to say, the rotary roller-like cutting Wheels I3, which are located diametrically opposite each other, and are disposed eccentrically about a pencil guide I 4 centered thereto, and converge away from the latter. The guide I4 has oppositely extending arms I5 which with a pair of arms I6 form a cage for the cutters I3 in a manner to appear. The iitting I5 of the cage forms a bearing for the axles I'I of the cutters I3 (see Fig. 3), and this guide I4 is made fast by tie rods I8 (see Fig. 2) of such cage to a rotatable sleeve I9, Within the shell I2 in the part I0, the said shell I2 and sleeve I9 being formed with an annular ball bearing raceway 20, having therein the bearing balls 2I and in this manner the parts I 0 and II through their respective shells I2 and I2 are held coupled together for rotation with respect to each other.

The cutters I3 at their axles I1 are fitted with toothed gears 22, which mesh with an internally toothed driving ring-like gear 23, which is peripherally xed within the open end of the 'shell I2- within the part I0, so that byv turning 3 the latter relative to the part II, the cutters will rotate for the cutting or sharpening of a pencil, not shown, when inserted Within the guide I4 through a clearance therefor as at 24 in the outer end of the part I as -best seen in Figures 1 to 3 inclusive of the drawings.

Within the shell I2 in the part I0 of the casing A, there is arranged a pencil gripping feeder mechanism, which involves a feeder follower disk 25, Fig. 8, having a center clearance opening 25' aligned ywith'the guide I4 for the-pencil, and this disk 25 at its periphery has a mutilated rim 25, forming diametrically opposed cutaway areas 42-'1 through which are exposed the outer-ends `of intertted gripping frames 28 laterally biased by springs 29 and having at their inner .ends .gripping jaws 29, opposed to each .otherand inter.-

tted for embracing the pencil, when inserted in 33 will ride out of the grooves 34 by passing over the inclined surface 34". With the ends 33 out of their respective grooves 34, the springs 35 will continue to move the disk 25 toward the guide I4 feeding the pencil into the cutters I3. To withdraw the pencil from between the cutters, the direction of rotation of shell I2 relative to shell I2' is reversed. That is, shell I2, viewing Fig. 2, is turned toward the observer (counter-clockwise in Fig. 4) causing the ends 33 to ride in the grooves 34 and bearing against the perpendicular sides 34. This in turn results in the disk 25 `#being rotated and withdrawn to the top of the (Sharpener, compressing springs 35.

When the disk 25 reaches the top, or end of shell I2, the

' cams I38, Fig. 5, to cause separation of the jaws the guide I4, for holding it until releasedibysuchvv jaws, in a manner hereinafter described.

The vframes 28 -have connected thereto outwardlv bowed Springv Spreader leaves 30 with which engage actuator dogs 3| reversely pivoted at-32 .to .the disk 25 and tSuchdess'at their reversegends .extend through openings 3l and work within respective half `spiral camming grooves 34 disposed opposite each other ,within the sleeve .I9 which :is -turnable in the shell I2 in the part `,Ill .and in this -manner vthe jaws 2-9 are brought into gripping engagement with rthe pencil for the holding ithereof in sharpening position. Each groove 34, as shown Ain Figure 3, has one .of its .side walls 34 perpendicular toits bottom and its opposite wall 34" inclined thereto.. A cover `plate35 vfits within thedisk 25, Fig. 2, to retain .the .frames l28 in position.

The disk 25 is advanced or fed in ,the direction of the .guide .I4 under .the action of ,tensioning springs Y35, which .arecarried .on hanger arms or rods 36 .supported fromastationary bracket 31, which .is secured .in theshell .I 2 in the `part I9, IleXtto .its outer .closed end, .while .the frames 28 at ,their outer .exposedcnds are adapted to play against .releasingfcams 38, See Figs. ,3 and 5, pro.- vided -in .the vsleeve .|19 :and .at .diametrically op...- posite `area thereof, This .playof the frames 28 takes .place when the 4sleeve .I9 is turned `clockwise, as viewed zin Figs. 4 .and 5, .as a :result of ,whichthe `.jaws .29 .will release .the pencil. Turn.- ing .the .sleeve L9 ,in a counter-clockwise direc.- tion, Y as .viewed in ligs. 4 .and .5, will .cause the pencil to .b e sharpened bythe ,cutters 13.

.Theuttings or `shavings from the pencil when sharpened will be trapped in the .part II, which on removal thereof .from its ,shell I2 .permits dumping l.of such cuttings orshavingsout of .the Sharpener, as will .beobvious Thus, Yassuming the frames 2,8,are .against the releasing .-cams .38, Fig. .5, the .jaws ,29 `are thus separated preparatory to ,receiving `a pencil. After inserting a pencil, .the ,operator .turns .the shell `I2 in a clockwise ,direction relative to .shell 1,22, ,as -viewed ,in Fig. 5, causing theirames 28 to ,ride oi the cams 38 ,-and Ygrip the pencil through jaws 29. .C ontinued rotation of shell I2 Willcause the ends.3.3 .of..the;dogs 3f! .toride down the .grooves 3.4, moving .the .disk 25 Itoward the guide .I4 assisted Aby 4the springs 35, compressed from .a Yprevious .cycle of operation. .Movement of the disk 25 ,toward the guide I4 ladvances the pencil through the vcutting wheels I3. `In the .event the action .of Ythe grooves 34 land ends 33 tends to feed the `pencil more-.rapidly than it is ,cut by the wheels I3, the force exerted by the spreader leaves -30 will b e-overcomeand the ends 2.9 to release the pencil.

What is claimed is:

1. In e. lpencil sharpener having a frame r,structure, .cutting `rollers lcarried thereby `and .driving means for rotating said rollers, the combination therewith of an aui'matic pencil holding and feeding device for .advancing a pencil toward the cutting rollers, said devicecomprising a shell se.- cured .to the driving means, a sleeve secured to .the :frame structure, helical grooves in said sleeve and .each of said grooves having a Vwall norma-l to the base Lof .the groove and a wall inclined to .the jgroove base, .disk means rotatably and reciprocably ,mounted in said sleeve, .opposed gripping means slidably carried by said disk means and adapted to grip a pencil, dogs .pivoted on said .disk means .and adapted `to .engage said grooves, respectively, .compression vmeans .secured ,tozsalid shell and drivinglyconnected to said disk `means .whereby .rotation o f 4the .shell vin one direction .will rotate said means and .whereby said compression .means will advance said disk means ltoward .the cutting rollers, ,the vsaid walls inclined to the -base `of the .grooves .allowing said .dogs tobe movedout Aof said respective .grooves whereby said disk vmeans may be .advanced toward the cutting .rollers .independently .of said grooves, said dogs .being adapted .to engage `the walls .normal to the base of .saidrespective grooves `for ,moving said .disk means away from `the cutting rollers upon .rotation of fthelshell in adirection opposite to ,said one direction, and lcam means on .said ,sleeve adapted to .engage said gripping v means for .causing -the same to release the pencil for removal therefrom.

.-2. Ina pencil :Sharpener having `a. frame .structure, cutting rollers .carried thereby Aand `driving vmeans `-for rotating Vsaid rollers, the -combination therewith ,of an automatic pencil holding and feeding device for advancing apencil towardthe cutting rollers, said 4device comprising a ,shell secured to .thedriving-means, a sleeve secured to the iframe structure, ,disk lmeans rotatably and -reciprocably ,mounted ,in said sleeve, opposed gripping means Slidablv carried by YSaid disk means ,and adapted to gripa p encil, compression means YVsecured to said shell and .drivingly c onnected to said disk lmeans whereby rotation of the shell in one direction will ,rotate .said Ydisk means and .wherebysaid compression means will advance Asaid disk means toward the .cutting rollers, .means `between `said ,sleeve and disk means for withdrawing Vwsaiddisk mea-ns away iromithe cutting rollers upon rotation of the shell .in a direction opposite to 4said .one direction.

v3. 11n Ea .pencilsharpener fhaving a vframe struc;- ture, cutting rollers carried thereby and driving iiens for rotating said rollers, the combination therewith of an automatic pencil holding and feeding device for advancing a pencil toward the cutting rollers, said device comprising a shell secured to the driving means, a sleeve secured to the frame structure, disk means rotably and reciprocably mounted in said sleeve, opposed gripping means slidably carried by said disk means and adapted to grip a pencil, compression means secured to said shell and drivingly connected to said disk means and whereby rotation of the shell in one direction will rotate said disk means and whereby said compression means will advance said disk means toward the cutting rollers, means for moving said disk means away from the cutting rollers upon rotation of the shell in a direction opposite to said one direction, and cam means on said sleeve adapted to engage said gripping iiias for causing the same to release the pencil for removal therefrom.

IRA S. PEIGHTEL.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PA'I'ENTS Number Name Date 1,170,093 Myers Feb. 1, 1916 1,722,771 Spengler July 30, 1929 ,1,858,891 Harris May 17, 1932 i 2,307,119 Duany Jan. 5, 1943 FOREIGN PATENTS Number Country Date 408,488 Germany Jan. 20, 1925