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Publication numberUS2691960 A
Publication typeGrant
Publication dateOct 19, 1954
Filing dateFeb 23, 1952
Priority dateFeb 23, 1952
Publication numberUS 2691960 A, US 2691960A, US-A-2691960, US2691960 A, US2691960A
InventorsAlbert Leeds Walter, Sweete Norbert J
Original AssigneeAlbert Leeds Walter, Sweete Norbert J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Crayon sharpener
US 2691960 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Oct. 19,1954 w, LEEDS ETAL 2,691,960

CRAYON SHARPENER Filed Feb. 23, 1952 Patented Oct. 19, 1954 UNITED STATES PATENT OFFICE CRAYON SHARPENER Walter Albert Leeds and Norbert J. Sweete, Chicago, Ill.

Application February 23, 1952, Serial No. 273,062

2 Claims. I 1

This invention pertains to devices for sharpening or pointing the ends of crayons.

It is well known that due to the composition of crayons, the matter of Sharpening or pointing by usual means and methods presents a somewhat awkward and messy task. The shaved particles have a tendency to cling to the cutting implement employed and the small shavings are diificult to confine or accumulate for proper disposal and, further, the hands of the person performing the operation become soiled.

One of the objects of our invention is to provide a novel crayon sharpener that is simple in construction, easy to use, and which obviates the foregoing diiilculties.

Another object is to provide an improved crayon sharpener having a plurality of circumferentially spaced-apart cutter blades, arranged in converging relation to each other, for receiving the end of a crayon therein, with each blade having an inwardly facing cutting edge, together with relief portions adjacent said cutting edge to reduce the possibility of adherence of crayon shavings thereto.

A further object is to provide an improved crayon sharpener characterized by the provision of a cutter head and cutter blades, together with a shavings collector receptacle adapted to be detachably connected to the head in surrounding relation to the cutter blades.

Still another object is to provide an improved crayon sharpener having a cutter head formed with a guide opening, with the wall of the opening being of substantial length, together with a plurality of converging cutter blades connected to the head and disposed in registration with the guide opening.

Other objects and advantages of this invention will be apparent from the following description, taken in connection with the accompanying drawings, in which:

Figure l is a view, part in section and part in elevation, showing the crayon sharpener and shavings collector receptacle embodying the present invention.

Figure 2 is a plan view of the assembly of the crayon sharpener and shavings collector receptacle.

Figure 3 is a transverse sectional view, taken substantially as indicated at line 33 on Figure 1.

Figure 4 is an enlarged, fragmentary, axial section through the combined sharpener and shavings collector receptacle, taken substantially as indicated at line 44 on Figure 2.

Figure 5 is an enlarged, transverse, sectional view, taken substantially as indicated at line 5-5 on Figure 4.

The crayon sharpener embodying the present invention comprises a unitary device indicated at It, preferably molded from any suitable material such as, by way of example and not limitation, thermo-plastic material, such as polystyrene. Associated with the unitary sharpener device, in detachably connectable relation, is a shavings collector receptacle II, which likewise may be formed as a unitary molded product of any suitable material, such as thermo-plastic material.

As shown in the drawing, the unitary sharpener device It comprises a head member or plate I2, formed with an opening I4, for the reception of the end of a crayon, as indicated at I5. Surrounding said opening, on the underside of said head member, is a flange or collar I6, which, together with the thickness of the head member I2, provides a guide Wall of substantial length for insuring proper guidance for the end of the crayon when it is being inserted into the sharpener device preparatory to pointing or sharpening said crayon. The sharpening device I0 is provided with a plurality, herein shown as four, circumferentially spaced-apart cutter blades I 8, which converge together in a direction away from the head plate I2, as clearly seen in Figures 1 and 4 of the drawing. The inner edge of each of the cutter blades is formed to provide a knife edge or cutting edge, as indicated at I9. The sides of the cutter blades taper toward the cutting edge and thereby provide relief portions for the shavings cut from the end of the crayon as the crayon is rotated in contact with the converging cutting edges IQ of said blades. Due to the shape of the cutter blades in cross section, as may be seen in Figure 5 of the drawing, relief isprovided for such shavings when the crayon is rotated in either direction with respect to the cutter blades. By this arrangement, the shavings cut from the crayon tend to freely dislodge themselves from the cutter blades.

As herein shown, the upper ends of the cutter blades are formed integrally with the underside of the head plate I2 and the flange l6 thereof, and the lower or opposite ends of the cutter blades are preferably, but not necessarily, integrally connected together by a disk-like member indicated at 2 I.

The shavings collector receptacle Il may be of any desired contour and, as shown, is of circular cross section. Said receptacle is closed at one end and the opposite or open end is provided with an internal annular recess 23, dimensioned for a snug friction fit around an annular shoulder 25, formed on the undersid of the head plate l2, as clearly seen in Figure 4 of the drawing. By virtue of this construction, th shavings cut from the crayons are conveniently collected within the receptacle and when desired the receptacle may be quickly and easily detached from the unitary cutter device ID for disposal of the shavings-therefrom.

It will be zapparent'izhat, if desired, the :cutter device l may be utilized independently of a shavings collector receptacle.

Although We have herein shown and described a preferred embodiment of our invention, manifestly it is capable of modification without .oleparting from the spirit and scope thereof. We do not, therefore, wish to be understood as limiting this invention to the precise embodiment herein disclosed, except as we may be so limited by the appended claims.

We claim as our invention:

I. A unitary, molded crayon'sharpener "formed of thermo-plastic material comprising a head member provided with an opening for the recaption of a crayon therein, and a plurality of oircumferentially spaced-apart 'cutt'erb'lades secure'd'at one end to the "underside of said head member, in surrounding relation to said opening,

said 'cutter blades having cutting edges extendi-ng toward the axis of said opening and in converging relation to each other, in a direction away from said head member, the ends of said blades, remote from said head, being rigidly connected together.

2. A unitary, molded crayon sharpener formed of thermo-plastic material comprising a head member provided with an opening for the reception of a crayon therein, a plurality of circumferentially spaced-apart cutter blades secured at one end to the underside of saidhead-.member,

in surrounding relation to said opening, said cutter blades having cutting edges extending toward the axis of said opening and in converging relation to each other, in a direction away from said head member, the ends of said blades, remote from said head, being rigidly connected together, and a collar surrounding said opening and constituting a guide for centering the crayon with respect to said cutter blades.

References Cited in the file of this patent

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US857574 *Oct 4, 1906Jun 25, 1907Frederick Edward Vesey BainesPencil-sharpener.
US1920957 *Apr 14, 1932Aug 8, 1933Louis CassiniCrayon sharpener
US2221239 *Mar 11, 1940Nov 12, 1940Johnston Stafford HApparatus for pointing elongated material
GB359555A * Title not available
GB367629A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2803220 *Jun 24, 1953Aug 20, 1957Michael GeorgesLead sharpener
US4158912 *Nov 10, 1977Jun 26, 1979Hein Werner ErdmannCandle diameter reducer
US5002182 *Jun 7, 1990Mar 26, 1991Mcginnis Dale WCrayon holder and container
US5699620 *Dec 11, 1996Dec 23, 1997Pentech International Inc.Apparatus for sharpening crayon marking instruments to form an improved arcuate safety marking tip
US5774995 *Oct 24, 1996Jul 7, 1998Ross; Richard M.Candle sharpening system
US5802948 *Jan 15, 1997Sep 8, 1998The Little Tikes CompanyMethod for sharpening crayons
US5875555 *Feb 9, 1996Mar 2, 1999The Little Tikes CompanyCrayon sharpener assembly
US6709266 *Aug 28, 2002Mar 23, 2004Brian Vang JensenCandle holder and a method of securing a candle
US6944960 *Dec 30, 2003Sep 20, 2005Cosimex (H.K) LimitedCrayon sharpener
US7654179Feb 2, 2010Elmer's Products, Inc.Crayon sharpener
US7743515 *Jun 29, 2010Joe GreenPencil sharpening device
US8225516Jul 24, 2012Joe GreenPencil sharpening device
US8656600 *May 3, 2011Feb 25, 2014Walter F HammerPencil sharpener configured to work with a power drill
US20040111894 *Dec 12, 2002Jun 17, 2004Clifford BousadaDevice for trimming candles
US20050091857 *Nov 5, 2003May 5, 2005Penshar L.L.C.Carpenter's pencil sharpener
US20050138819 *Dec 30, 2003Jun 30, 2005Cosimex (H.K.) LimitedCrayon sharpener
US20050262711 *May 25, 2004Dec 1, 2005Joe GreenPencil sharpening device
US20050262712 *Jul 5, 2005Dec 1, 2005Joe GreenPencil sharpening device
US20070151113 *Mar 12, 2007Jul 5, 2007Joe GreenPencil sharpening device
US20080022538 *Jul 26, 2007Jan 31, 2008Elmer's Products, Inc.Crayon sharpener
US20110265911 *Nov 3, 2011Hammer Products International, LLCPencil Sharpener, Adapter, and Method of Making Same
Classifications
U.S. Classification30/454, D19/73, 30/451
International ClassificationB43L23/08, B43L23/00
Cooperative ClassificationB43L23/08
European ClassificationB43L23/08