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Publication numberUS749011 A
Publication typeGrant
Publication dateJan 5, 1904
Filing dateFeb 14, 1903
Publication numberUS 749011 A, US 749011A, US-A-749011, US749011 A, US749011A
InventorsHarry L. Adams
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pencil-sharpener
US 749011 A
Images(1)
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Description  (OCR text may contain errors)

PATEN'VI'ED J'ANQ5, 1904.

6' lrK 7 H. L. ADAMS. PENCIL SHAR-PENER,

APPLICATION IILED FEB. 14. 1903.

m uonnn.

, PNDTO-LIK of sharpener.

UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

PENClL-SHARPENER.

SPECIFICATION formingpart of Letters Patent No. 749,011, dated J'anuary5, 1904. Application filed February 14, 1903. Serial No. 14:3,360. (No model.)

To all whom it may concern.-

Be it known that I, HARRY L. ADAMS, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented Improvements in Pencil Sharpeners, of which the fol-' The sharpener which I have devised is ar-- ranged to be carried in a suitable casing which may be formed directly in the end of the penoil when the latter is made of paper or in a supplementary-casing applicable to the end of said pencil when the latter is made of paper or other material.

My invention is fully shown in the accompanying drawings, in which- Figure 1 is a perspective view of a lead-pencil having the sharpening device forming the subject of my invention attached to the end of the same. Fig. 2 is a perspective view of the pencil, showing the sharpener in use. Fig. 3 is an enlarged perspective view of the sharpening device detached from the'pencil. Fig. 4 is a sectional elevation of the same on the line a a, Fig. 3, showing the application to apaper pencil. Fig. 5 is a partial sectional view on the line b b, Fig. 3, showing the application to a pencil having a metal sleeve. Fig. 6 is a perspective view of a modified form Fig. 7 is a view of another modified form in which a single blade is employed. Fig. 8 is an enlarged perspective view of one of the knives, and Figs. 9 and 10 illustrate further details of my invention.

As before noted, the sharpener which I have devised is particularly applicable for use with the paper pencils nowin common use and contains several features of especial advantage to such pencils. its complete form is in the nature of a plug or cork, and advantage is taken of the fact that the paper pencils are made of layers of paper and a hole is bored in the end of the Moreover, the structure in ther purpose of holding the particles of lead and preventing them soiling the fingers.

In the drawings herewith the pencil is indicated at 1 and may be of the paper form described, having the recessed end 2, or it may be any other form of pencil, as at l provided with a casing 3 at the end to receive the cork or plug forming the sharpening device. The sharpener device. (indicated at 4 in the perspective and other views) has the reduced portion 5'to fit within the casing and the enlarged'portion 6 to actas a stop, which enlarged portion is recessed at 7 to receive a section of rubber eraser 8. The reducedportion of this plug is slotted at 9, and in the slots thus formed the knives 10 are placed, being secured to said member by means of thread 11, wrapped around agroove 1 2 in the reduced portion of such member, which threadis then brought through a suitable slit 14L in the shell of the reduced portion 5, as clearly shown in Fig. 3, or it may be laid alongside one of the 'knife'blades in the slot provided for the same and is finally secured by dipping the structure in suitable varnish. The knives are clearly shown in Fig. 8 and comprise the body 10, having the'projecting ends 15, between which the V-shaped recess 16 is formed, and beyond the recess the ends 15 are sharpened for a purpose shortly to be described.

It will be noted that the reduced portion of the plug or cork for holding the blades and forming the sharpening device is internally recessed at 18, and the knives are so disposed within this recessed portion that their V-shaped openings are opposite each other, withthe ends 15 projecting beyond the end of the plug. These knives are placed equidistantly apart from end to end and with their V-shaped recesses provide for the sharpening of the lead to a satisfactory tapering point without danger of the same breaking oil. When through, the loose particles of lead may be shaken out of the cork or plug and the latter then inserted in the end of the pencil, and should any lead remain in the sharpener it will be held in the recess of the pencil when the sharpener is set in'place.

means to be carried with the pencil for the preliminary cuttingof the paper of which the pencil is composed in order to strip the same, and thereby secure an additional amount of lead for use.

When the rubbers are to be fitted to the plug carrying the knives, glue or other adhesive material is placed in the recess 7, which extends, as will be noted, to the knives, and the result is an additional securing means for the knives.

Instead of providing the blades within the recessed portion of the plug member I'may arrange such plug in the manner shown in Fig. 6, in which the blades projectentirely beyond the end of the plug, being spaced equidistantly apart and each having theV- shaped recesses before referred to. In some instances I may provide astraight tapered recess in the plug or cork and mount a single blade therein, as shown in Fig. 7, which when.

the pencil is held against the same insures its sharpening in a manner similar to the other devices.

Although I have shown and described the plug as being made ofwood and recessed to receive the rubber at one end and the knives at the other, it will be understood that such.

casing may be made of metal and the knives secured within the same in any suitable manner, the opposite end of such casing providing a receptacle for the rubber. Thus in Fig. 9 I have shown a shell 20 arranged to receive a pair of knives, such knives having projections 21 to enter recesses in the shell and be thereby held in place. The shell is then spun into the shape shown and the rubber held in by crimping. In Fig. 10

I have shown a form, in which the portion of the plug carrying the knives is forced into a tapered casing 22, which is then crimped around the rubber placed below the plug. In all instances I prefer that the blades shall have the projecting portions extending beyond the plug member in order to provide means for cutting the paper when the sharpener is employed with paper pencils. It will be understood, however, that this feature may be dispensed with and the knives carried wholly below the top level of the casing. Instead of arranging these knives to be carried by paper pencils other pencils may be provided with a tubular-casing at the end of the same, which serves to receive the plug carrying the sharpener.

Having thus described my invention,.Iv

claim and desire to secure by Letters Patent- 1. The combination of a pencil having a recessed end, and a plug arranged to be inserted in said end and carrying a pair of coacting sharpening members;

2. The combination of a pencil having a recessed end and a plug arranged to be inserted in said end and carrying a pair of coacting sharpening-blades.

3. The combination of a pencil having a recessed end, a plug arranged to be inserted in said recessed end, and a pair of coacting sharpening members carried at one end of said plug, the other end of said plug being recessed and adapted to contain an eraser.

4. As a new article of manufacture, a'penoil-sharpener, comprising a member insertible in the end of the lead-pencil, and carrying a pair of knives having V-shaped notches.

5. As a new article of manufacture a pencil-sharpener comprising a member insertible in the end of a lead-pencil and carrying a pair of knives arranged in parallel planes and having V-shapcd notches in the same.

6. As a new article of manufacture, a pencil-sharpener comprising a plug insertible in the end of a pencil, and knives carried'by said plug and projecting beyond, the end of the same.

7. As a new article of manufacture, apenoil-sharpener, comprising a recessed plug insertible in the end of a pencil, knives carried by the said plug, and having sharpening portions within said recess.

8. As a new article of manufacture, a penoil-sharpener member comprising a plug having a reduced portion internally recessed at one end and knives adapted to slots in said recessed end, said knives having projecting portions and the other end of said plug being recessed and adapted to contain an eraseia.

9. As a new article of manufacture, a pencil-sharpener member comprising a plug having a reduced portion internally recessed at one end, and knives having V-shaped notches adapted to slots in said recessed end, said knives havingprojecting portions, and the other end of said plug being recessed and adapted to contain an eraser.

10. A pencil-sharpener comprising a plug having a reduced portion, a pair of knives fixed in slots in said reduced portion and lying in parallel planes equidistantly from each other from end to end, with means for securing said blades in place.

11. A pencil-sharpener comprising a plug having a reduced portion, a pair of knives .with V-shaped notches fixed in slots, in said HARRY L. ADAMS.

Witnesses:

MURRAY 0. BOYER, J os. H. KLEIN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4755074 *Sep 17, 1986Jul 5, 1988Roberts Myrtle MPencil sharpener
US4934057 *Apr 27, 1988Jun 19, 1990Chao Wen KMulti-blade pencil-core sharpener
US8214961 *May 6, 2009Jul 10, 2012Innovative Products Of America, Inc.Apparatus for cleaning male electrical pins
US20100281639 *May 6, 2009Nov 11, 2010Innovative Products Of America, Inc.Apparatus for Cleaning Male Electrical Pins
Classifications
Cooperative ClassificationB43L23/08