US1417034A

US1417034A - Pencil sharpener

Info

Publication number: US1417034A
Application number: US342891A
Authority: US
Inventors: Cleveland Clement
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-12-06
Filing date: 1919-12-06
Publication date: 1922-05-23
Anticipated expiration: 1939-05-23

Description

CLEMENT CLEVELAND, 'or Yoia, iv. Y.

PENCIL snanrnnnn.

specuiffcatn of Letters Pttntel 23, 1922.

appiicationined December' e, 191e, serial No. 342,891. Renewed Arglist so, 1921.` serial No. 493,962.

To all whom t may concerne:

Be it known that l, CLEMENT CLnvnLAND, a citizen or the United States, residing in New York, in the county of New York State of New York, have invented certain new and useful Improvements in Pencil Sharpeners, of which the followingl is a specification.

My present invention relates to that class of pencil Sharpeners which usually have a substantially conical form and are provided with a longitudinally disposed knife-edge and an adjoining chip-space, and which sharpeners'being of small dimensions are convenient for carrying in the pocket, my present invention being in part an improve ment on the pencil Sharpener described in my copending application Serial No; 303,- 473, (renewal) filed June 11th, 1919.

An object of my present invention is to furnish such an improved pencil` Sharpener in which the `sevenal details shall be so organized that the entire Sharpener may be manufactured at aA relatively low cost.

A further object is to furnish a highly effective pencil Sharpener arranged for first reducing' the wood'o`r lead-encasingV portion ot' the pencil, and Jfor next sharpening or pointing the lead by a separate operation, thus effecting the sharpening of the pencil by ,a two-member process.

A further object is to furnish a hiohly effective pencil sharpener vof conical form having a plane-edge and ay kniie-edge arranged for first reducing the "wood or lea d-encasing portion of the pencil, the lead` ofA the pencil `next being sharpened or pointed by the knife-edge ina socket for receiving and positioning the lead for sharpening or pointing, which socket is "Formed by a member which also acts as a `means for separating the plane-edge and the `knife-edge so that the knife-edge'is brought into proper position for coaction with the plane-edge for cutting purposes, the knifeedge reacting on the separating member as a binding-spring for holding4 this member in position in the Sharpener.

Furthe;` objects and advantageswill be filiiointed out in the course of the following description.

`In the accompanying drawings forming part of this specilication,- i

Figure l is a perspective view of a pencil Sharpener made in accordance with, and

illustrating a preferred embodiment of, my present invention.

Fig. 2 is a longitudinal sectional view of the conicalportion of the pencil Sharpener and the member for separating the planeedge and the kniferedge of the Sharpener.

Fig'. `3 is a` detail end view of the pencil Sharpener.

Fig. 4t is a longitudinal sectional view on the line 4r-4: 'of Fig.- 3, looking in thedirectionlo the'arrow, showing the' guide-springs.

Fig. 5 is a plan view showing the knifeedge e, the plane-edf'o'e f, and in outline the separating member Fig. 6 isf a view of the blank from which the conical portion of the pencil Sharpener is formed.

Fig. 7 `is aV plan view of the separating memberD.

Fig.' B is an end View of the separating member ID looking in theV direction of `the arrow Fig. 7, this figure being arranged in alin'ed projection with Fig. 7, for purposes of comparison.

Fig. 9 is a side View of the separating memberhD: arranged in lower projection with Fig. 7. Y i

Fig. 10# is an end view ot the conical por` tion of the pencil Sharpener on the line lO-f l0 of Fig.Y 2, looking in the direction of the: arrow, the separating member D being removed. i

Fig. l1 is an enlarged cross-sectional vand fragmentary view of the upper portion oi?V the assembled parts as shown in Fig. 2 and taken on the line 11-11 of Fig. 7, or illustrating the relationof the several coac-ting faces whereby the cutting-edge is held under proper adjustment for use and for acting as a spring for tensioning the socket member D inl working position.

Similar characters designate like parts in all the views.` l A My present invention comprises the conical portion or cone C of the Sharpener, the separating member D, and the guide-springs or guide-

fingers

3d, 3f.

The cone C is formed by a blank B, of resilient metal or material lsuitable 'for the purpose, of the shape shown in the drawings; tha't is, the blank B is a truncated seg ment of a circle, the arc, as n2, at the truncated end being concave, and the greater arc, as n.5, at the other end of the segment being convex, the edges or sides of the .seg-

ment -converging from the greater arc a5 towards the lesser arc n2, one of the sides or edges as e, and herein termed the knifeedge, being provided with a cutting edge e, and.` the other side or edge, as f, and

herein termed the plane-edge, having` a non`r vof diameter and the respective edges or sides of the segment adjacent to the guide-spring or guide-finger blanks. y

The sides or edges of the blank B are rolled or pressed together by suitable means into the tubular cone C, the plane-edge f and the knife-edge e assuming, when the cone is viewed from the greater end thereof as on the line 10-10 Fig. 2, in the directioiiof the arrow, the positions shown in Fig. l0, that. is, the knife-edge e lies slightly interiorly of the plane-edge f. The guide-spring or guide-

finger blanks

3d, 3f, are forced or pressed inwardly to position for properly engaging or guiding the pencil E when( the same is inserted in the cone. C for sharpening.

The separating member D, is of the shape indicated in the drawings, that is, it is a reversely curved member, when viewed from the side as in Fig.Y l, having a somewhat curved end CZ and an end (Z2, of greater curvature than the end ci", the purpose of which is hereinafter stated. The separating member D is provided with arib or fin d3, Figs. 7, 8 and 9, which is intended to engage or be inserted in the recess g in the plane-edge fiof the cone C, and to engage the interior surface of said plane-edge.

To assemble thepencil Sharpener the separatingv member Dis engaged or inserted in the recess 8 of the cone C, engaging the interior surf-ace of the plaiie-edge f, the end d of the separating member'lying over or engagingthe exterior surface of the planeedge f of the cone, and the end Z2 of the separating member lying under or engaging the interior surface of the knife-edge e of the cone.v The, end Z2 thus springs outwardly .orl presses outwardly the knife-edge and vwith it the cutting-edge e from the position relative to the straight-face f of the plane-edge fas shown in Fig. l0, to a position where the cutting-edge c will coactwith the straight ,face f', as lshown in Figs. l and 3, so .that thecutting-edge e will cut -the woodor lead encasing portion of the pencil evenly and regularly, and will not gouge Vorbite into the-w0od or lead encasing portion. This adjustment is further illusll, 2, v3 and 5.

trated by Fig. 10, where the face of the v separating member D is shown engaging the straight surface f of the plane-edge f,

Vwhile the face y engages the under surface of the knife edge c to support or press outwardly the knife-edge, and the face en` gages, as a stop face, the cutting edge e Vof the kiiife-edge.

V'llie material of the cone C being of coiisiderable resiliency the knife-edge c when so sprung or forced outwardly reacts or presses inwardly and downwardly on 'the end Z2 of the separating member D and provides a binding-spring for retaining the separating member D in position iii the cone C.

When the separating member D is iii the above described position in theJ cone C, the end Z2 of greater curvature than the end d forms with the adjacent portion of the kiiife-edge e, a socket or means for receiving therein the lead-end of the pencil E for sharpening or pointing the lead by means of the cutting-edge c of the knife-edge c, this socket /c being of substantially cone shape due to the curvature of the knife-edge and the tapering of the cone C and the curvature of the eiid d2 of the separating member substantially as indicated in Figs. It will be understood, of course, that in practice the exact shape, proportions and position of the point socket of said member D should be made iii accordance with the requirements in any particular case as regards the shape, or particular conical formation, of pencil point which may be desired. An advantage of this forni of expanding or separating member is, that while it provides for sharpening or pointing the lead of the that cuts the wood or lead-eiicasing portion of the pencil, and also acts as a means for separating the knife-edge and plane-edge of the cone, it is simple in construction and can be easily and cheaply made.

Having thus described my invention, l claim:

l. A pencil Sharpener comprising a split tubular cone for receiving the lead pencil therein, the split edge portions of the cone lproviding a binding spring for retaining the means for positioning iii the tubular cone.

3. A pencil sliarpeiier comprising a split pencil by the saine cutting-edge tubular coney for receiving the lead pencil` therein, the spilt edgeiportions of the cone providing a plane edge and a knife edge, and means for positioning the plane edge and knife edge for co-action therebetween for cutting the encased end ofthe lead pencil by the knifcledge, said means forL positioning the knife edge forming an opening at the mouth of the tubular cone for inserting therein the unencased lead of the pencil for pointing saidflead by the knife edge.

Il, A pencil sharpener comprising a split tubular cone for `receiving the lead pencil therein, thev split edge portions of the cone providing a plane edge and a knife edge, and means for positioning the plane edge and knife edge for coaction therebetween for cutting the encased `end of the lead pencil by the knife edge, the knife edge providing a binding spring for retaining the means for positioning in the tubular cone, and said means for positioning and theknife edge forming an opening at the mouth of the tubular cone for insertion therein of the nnencased leadend of the pencil for pointing said end by the knife edge.

5. ik pencil sharpener comprising a split tubular cone for receiving the lead pencil therein, the splitedge portions of 'the cone `providing a plane edge and a knife edge, and means located between the plane edge andthe knife edge havingends engaging the plane edge and knife edge for; positioning said edges for coaction therebetween for cutting bythe knife edge.

n. pencil sharpener comprising a split tubular cone for receiving the lead pencil tliereiii, the split edge portions of the cone providing a plane edge and a knife edge, and means located between the plane edge and the knife edge `having ends engaging the plane edge and lknife edge forpositioning said edgesy for coaction therebetween for ciittingby the knife edge, the knife edge providing a binding spring for retaining the means for" positioning in the tubular cone.

7. A pencil Sharpener comprising a split tubular cone for receiving the lead pencil therein, the split edge portions of the conel t OT.

Cir

providing a plane edge and a knife edge, and means located between the plane edge and the knife edge having endsengaging the plane "edge and knife edgefor positioning said edges for coaction therebetween for cutting the encased end of the lead pencilby "the knife edge, said means for positioning `and the knife edge forming an opening at the mouth of the tubular cone for insertion 4therein of the iinencased lead end of the therein, the split edge portions of the cone arovidino a ilaneed e and a knife ed ev and l o l i means `located between the plane edge and the knife edge having ends engaging the plane edge and knife edge for positioning said edges for coaction therebetween for cutting the encased end of the lead pencil by the knife edge, the knife edge providing a bind- .ing spring for retaining the means for positioning in the tubular cone, and said means for positioning and the knife edge forming an opening at the mouth of the tubular cone for insertion therein of the nnencased lead end of the pencil for pointing said end by the .knife end.

9. A pencil sharpeiier comprising an eX- pansively resilient tubular cone for receiving the lead pencil therein provided with a plane-edge having a recess therein and provided with a knife-edge for cutting the leadencasing'pcrtion of the pencil, a separating member provided with curved ends and provided with means for engaging said recess between the blank and edge, one of said ends when said member is in engagement with said recess being in engagement with the exterior 'surface of said plane -edge and the other of said ends being in engagement with the interior surface of said knife-edge for pressing the knife-edge outwardly, and means for guiding the lead pencil inthe tubular cone for cutting the lead-encasing portion thereof.

l0. A, pencil sharpener comprising an eX- pansively resilient tubular cone for receiving the lead pencil therein provided with a plane-edge having a recess therein and provided with a knife-edge for cutting the lead-eiicasing portion of the pencil, a separating member provided with curved ends and provided with means for engaging said recess, one of said ends `when said member is in engagement with said recess being in engagement with the exterior surface of said plane-edge, and the other of said ends being in engagement Awith the interior surface of said knife-edge for pressing the knife-edge outwardly, and means for` guiding the lead pencil in the tubular cone for cutting the lead-encasing portion thereof; said outwardly pressing end and said knife-edge when said member is in engagement with saidrecess providing a socket for receiving the lead-end of the pencil for pointing the leadend by said knife-edge.

ll. A. pencil sharpener comprising an eX- 'pansively resilient Vtubular cone "forwreceiving the lead pencil therein provided with a plane-edge having a straight face and having a recess therein and provided with a knife-edge having a cutting-edge for cutting the lead-encasing portion of the pencil, a separating member provided with curved ends and provided with a rib for engaging said recess and the interior surface of said plane-edge, one of said curved ends when said rib is in engagement with said recess and the interior surface of said plane-edge kbeing inV engagement with the exterior surface of the plane-edge and a first face of the other of Vsaid curved ends being in engagement with said straight face of theplaneedge and a second face thereof being in engagement with the interior surface of said yknife-edge for pressing the same outwardly and a third face thereof being in engagement with said cutting-edge as a stop-face for said cutting-edge, and guide-springs in the tubular cone for the lead pencil.

12. A pencil sharpener comprising an expansively resilient tubular cone for receiving the lead pencil therein provided with a plane-edge having a straight face and having a recess therein and provided with a knife-edge having a cutting-edge for cutting the lead-encasing portion of the pencil, a separating member provided with curved ends and provided with a rib for engaging said recess and the interior surface of said plane-edge, one of said curved ends when said rib is in engagement with said recess and the interior surface of said plane-edge being in engagement with the exterior surface of said plane-edge, and a first face of the other of said curved ends being in engagement with said straight face of the plane-edge and a second face thereof being in engagement with the interior surface of said knife-edge for pressing` the same outwardly and a third face thereof being in engagement with said cutting-edge as a stopface for said cutting-edge, and guide-springs in the tubular cone for the lead pencil; said outwardly pressing face and said knife-edge when said rib is in engagement `with said recess and the interior surface of said planeedge providing a socket for receiving the leadV of the pencil for pointing the lead by said cutting-edge. A

13. A pencil Sharpener comprising an expansively resilient tubular cone for receiving the lead pencil therein provided with a Vplane-edge having a straight face and having a recess therein and'provided with a knife-edge having a cutting-edge for cutting the lead-encasing portion of the pencil, a separating member provided with reversely curved ends and provided with a rib for engaging said recess and the interior surface of said plane-edge, one of said curved ends when said rib is in engagement with said recess and the interior surface of said planeedge being in engagement with theV exterior -surface of said plane-edge, and a first face of the other of said curved ends being in engagement with said straight face of the plane-edge and a second face thereof being in engagement with the interior surface of lsaidknife-edge for-pressing the Same outwardly and a third face thereof being in enf gagement with said cutting-edge as stopface for said cutting-edge, and guide-springs in the tubular cone for the lead pencil, said guide-springs being integral with the tubular cone.

11i. A pencil Sharpener comprising an expansively resilient tubular cone for receiving the lead pencil therein provided with a plane-edge having a straight face and having a recess therein and provided with a knife-edge having a cutting-edge for cutting the lead-encasing portion of the pencil, a separating member provided with reversely curved ends and provided with a rib for engaging said recess and the interior surface of said plane-edge, one of said curved ends when said rib .is in engagement with said recess and the interior surface of said plane-edge being in engagement with the exteriorsurface of said plane-edge, and a first face of the other of said curved ends being in engagement with said straight face of the plane-edge and a second face thereof being in engagement with the interior surface of said knife-edge for pressing the same outwardly and a third face thereof being in engagement with said cutting-edge as a stop-face for said cutting-edge. and guidesprings in the tubular cone for the lead pencil, said guide-springs being integral with the tubular cone; said outwardly pressing face and said knife-edge when said rib is in engagement with said recess and the interior -surface of said plane-edge providing a socliet for receiving the lead-end of the pencil for pointing the lead-end by said cuttingedge.

15. A pencil Sharpener comprising a resilient split cone, the split edge portions thereof providing a plane-edge and a cutting-edge, said cone being formed for said Cutting-edge to have'a position within the circle of its proper cutting position, and a cone-expanding member interlocked with said edge and provided with faces for locating said cutting-edge in cutting position.

A16. A pencil Sharpener comprising a resilient split cone, the split edge portions thereof providing a plane-edge and a cutting-edge, said cone being initially formed for said cutting-edge to have a position within the ciicle of its proper cutting position` and a cone-expanding member inter-locked with said edge and provided with faces for locating said cutting-edge inv proper cutting position.

17. A pencil Sharpener comprising a resilient split cone, the split edge portions thereof providing a plane-edge and a cut'- ting-edge, said cone being formed for said cutting-edge to have a cutting position within the cone circle, and a cone-expa n ding member separable from the cone interlocked with said edge and provided with faces for locating said cutting-edge in normal cutting position.

1S. A pencil Sharpener blank of resilient metal of truncated segment of a circle shape, one edge of said segmentbeing non-cutting andprovided with a recess therein adjacent to the periphery of the segment, the other edge thereof being a knife edge, and the blank being provided with a pair of cuttings therethrough having parallel sides extending longitudinally of the blank, the cuttings at one end of the sides thereof being connected to the blank, for forming cooperating guide-springs- 19. A pencil Sharpener blank of resilient metal of truncated segment of a circle shape, the truncated end of the segment being concave, one edge 0f said segment being noncutting and provided with a recess therein adjacent to the periphery of the segment, the

' other edge thereof being a knife edge and ythe blank being provided With a pair of cuttinge therethrough, each cutting having parallel sides extending longitudinally of the blank, the cuttings at one end of the sides thereof heilig lconnected to the blank, for forming cooperating guidesprings.

20. A. pencil Sharpener blank of resilient metal of truncated segment of a circle shape, one edge of said segment being provided with a straight face having a recess therein adjacent to the periphery of the segment, and the other edge thereof being a knife edge having a cutting edge thereon, and the blank being provided with cuttings therethrough having rounded ends and parallel sides, the cuttings at the ends of the sides thereof opposite to said rounded ends being connected to the blank, for forming cooperating guide-springe.

CLEMENT CLE VELAND.

l/Vitnesses c H. D. PENNEY, FREDERIGH T. f'lAss.