US1498235A - Pencil sharpener - Google Patents

Description

June 17, 1924.

C. CLEVELAND PENCIL SHARPENER Filed May 19, 1922 I Ito 812221: (Ye/7181136260195 flyfla s M22 Patented June 17, 1924. l

UNITED STATES 1 1,498,235 PATENT OFFICE.

CLEMENT GLEVELAND, or nawxoaan. r.

:EENGIL SHARPENER.

im m" area May is, 1922. Serial No. 562,183.

To all whom it may concern Be it known thatI, CLEMENT CLEVELAND, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Pencil Sharpeners, of which the following is a specification.

My present invention relates to that class of pencil Sharpeners which usually have a substantially conical form, and are made of small dimensions convenient for carrying in the pocket, and are, arranged for first reducing the wood and next, by a separate operation, for sharpening the point of the lead, thus effecting the complete sharpening operation by a two-stage process.

The present invention is, inthe nature of an improvement upon the pencil sharpener described and claimed in the prior Letters Patent, No. 1,327,459, granted to me January 6, 1920, and which may be referred to for a more extended description of the manner in whichflthe cutting edge is arranged for performing the two sharpening operations;

Also, some features herein illustrated are shown in another Patent, No, 1,417,034, dated May 23, 1922.

In the accompanying drawing forming a part of this specification, Fig. 1 is aside view of a pencilsharpener embodying my present improvements. ina preferred form thereof." I

Fig.2 is an end view ofa completely assembled sharpener as seen from the right handinFigl. N

Fig. 3 is a plan or top view showing the sharpener as seen from above in Figs. 1 and 2.

Figs. 4 and 5; are, respectively, a side view and amend view ofthe side portion G of the sharpener shown in the preceding views; and Fig. 6 illustrates approximately a form of plate, suit-ablefor being shaped up by.

proper die methods into the completed form illustrated in the preceding views. Figs. 7, 8 and 9 are, respectively, a side view as seen from the left hand in Fig. 2) of the'side po'rtionC ofthe sharpener; an end view ofsaid portion as seen from the right hand in Fig. 7; and, a plate of an outline suitable for being formed into the completed side portions shown in the preceding views.

Fig. lOillustrates, in a separate view, an

improved arrangement and device for guiding the woodportion of the pencil when inserting the same into the sharpener for reducing the conical wood portion thereof, and for convenience of illustration this view shows a longitudinal vertical section of the sharpener, and, in dotted lines, the position of a pencilintroduce'd thereinto.

Fig.,11 shows the said pencil-guiding device drawn'in alinement with Fig. 10, and as seen from the right hand in Fig. 1, and also as seen in Fig. 2.. I I

Similar characters designate like parts in allof the views. A leading feature of the present improvements will be understood by a comparison of the several figures of the present drawing, and especially by comparison of the same with the illustrations in my. said prior patents, to which reference may be had.

Inv the present v instance, the conical portion of the sharpener, instead of beingmade of a singlepiece, is formed of two side-portions, herein designated as C and 0 each of these portions being provided with an extended flange or plate as 2, 3, respectively, and being adapted tobe aiiixed each to the other by a simple die process and a braz ing or spot welding action accomplished in connection therewith.

The aforesaid method of construction renders available another improvement which is a particular feature of the sharpener herein illustrated,which consists in making the guiding side portion C relatively thicker, or relatively more rigid, or both, than the opposite and coacting portion C the latter beingthelknife-edge member of the pairv of side portions or'plates. Thus, in the operation of the sharpener the flexing of the conical portion whereby the operation of the knife maybe automatically self-limited under some. of the conditions (as explained and illustrated in xmy. aforesaid Letters guiding springs in accordance with the construction specially illustrated in Figs. 1 'to 4 inclusive of said patent, and these pencil guiding devices are adapted to be used in connection with the present improvements, and as regards the principal featureshereof are considered to be, broadly, an equivalent for the specific improvement in pencil-guiding means herein specially shown in Figs. 10 and 11, and illustrated in the assembled sharpener-asshown in Figs. 1 and 2. I

Since the conical z'portion comprising the two sides C and C is herein shown provided, when assembled, with the plate-form extension I), having an openingnear one end thereof which constitutes a holding means whereby the operatorxmay grasp ;the sharpener and whereby the sharpener may be suspended on a watchchain or key chain, and since ,this extended plate portion furnishes means for attaching and ,properly supporting an improved pencil-guiding device, it is therefore deemed preferable to use, in the presentinstance, aipencil-guiding spring, S, and .a preferred form of this is shown in the drawings. This guiding device, see Fig. 11, may .consist of a narrow ribbon of steel, or other suitable metal, formed with the two pencil bearings S and S and with a shank portion S of U-shape which may be inserted throughincisions cut at 4 and 5 (Figs. 6 and 9), so that the said shank portion will overlap andma-y be properly afiixed to the narrowerrend portion 2 of said sideplate E, .as will be more clearly understood by a comparison of Figs. 1, 2 and 10. Said spring member '8 having been preliminarily prepared, and the two side portions O and C of the sharpener having been affixed to gether, (preferably by surface adhesion or welding alreadyreferred to), said spring device-may'then be slipped into place and affixed by riveting in an obvious manner not shown), or, preferably, by a soldering on brazing operation, or .by a directly applied spot-welding process, which, in the present state of that art, is readily employed and will be understood by those familiar therewith without a further description.

In the accompanying drawing the socket D for the end of the lead of the pencil to be sharpened, is illustrated in accordance with the construction set forth in said patent, No. 1,327,459, but itwi-ll be understood that in place thereof this socket and .provision therefor may be in accordance with the special construction thereof described, illustrated and claimed'insaid LettersPatent No. 1,417,034 issued .May 23, 1922, in which.instance the members C and C herein shown in Figs. Land .7, will be preliminarily shaped in accordance with'the construction which is fully illustrated in said patent of May 23, 1922.

For convenience of description, the two ,mally have those respective modes of action relative to each other while the sharpener in being used is subjected only to asufficient force, or pressure, for doing the work for which the sharpener may have been zproper-ly designed, in any particular instance;-

but, of course, it will be understoodtha't any part of the devicemay be flexed, or bent,*b,y subjecting it to a-wrong treatment, or-to =2. force relatively abnormal therefor. V

7 Having (thus described ,my invention, I claim:

-1. A pencil ssharpener, comprising ?two semiconical members each having a flange portion alongone (longitudinal edge thereof, said [flanged portions beingjoined together to form a tubular cone and with the free edges of said semiconical Fmembers spaced apart and spring .tensioned pencil encircling-guiding means withinsai'd cone.

2. A pencil sharpener, comprising airesilient semic'onical sidejmember-a-nd a non-resilient semiconical side member joined together to form a split tubular .expansible cone for receiving the lead pencil therein, the free edge of said non-resilient member. being a plane ledge and-the free edge of said resilient member being akni-fe edge, and

means for positioning the plane edge and a knife edge for coactio'n therebetween for cutting by the knife edge, 8. .A pencil sharpener, comprising a resilient 'semiconical side member and a nonresilient semiconic-al side member joined together to :form a split ntubularfiexpansible cone for receiving the lead pencil :therein, the free edge of said non-resilient member being a plane edge and the free edge of said resilient fmember being a knife ed ge, means for positioning the plane edgeand knife edge for coactiontherebetween for cutting by the knife edge, and spring-tension pencilencirclingeguiding means within said cone.

4. A pencil sharpener for two-stage 'operation, comprising semiconical members joined together to form a split tubularcone, one of said members having a knife-edge located "longitudinally on one side thereof, said knife-edge being arranged near the smaller end of the cone for sharpening the wood of a pencil, aleadsupportingzsocket formed of the other of said .semiconical members and located within the largernend of said cone and in position ;for coacting with said knife-ledge, and s'pring-tenlsioned pencil-encircling guiding means within said cone. r

-5. A pencil sharpener for two-stage operation, comprising a resilient .-seiniconlical side member and a noneresilients'semiconical side member joined together to form a split tubular expansible cone for receiving the lead pencil therein, the free edge 01": said non-res1l1ent member being a plane edge and 4 the free edge of said resilient member being a knife edge means for positioning the plane edge and knife edge for coaction therebetween for cutting by the knife edge, a leadsupporting socket formed of said non-resilient member and located Within the larger 10 end of said cone and in position for coacting with said knife edge, and spring ten sion pencil-encircling-guiding means Within said cone arranged to maintain the pencil in axial alinement therewith during the 15 Wood-removing first-stage operation.

CLEMENT CLEVELAND.

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