US988698A - Pencil-sharpener. - Google Patents

Description

- F. A. EASTMAN.

PENGIL- SHARPENER.

Arrmornon rum) APB.27, 1909 988,698. Patented Apr. 4, 1911'.

FREDERICK A. EASTMAN, OF ROCKFORD, ILLINOIS.

PENCIL-SHARPENER.

Specification of Letters Patent.

Application filed April 27, 1909.

Patented Apr. 4, 1911.

Serial No. 492,590.

To all whom it may concern:

Be it known that I, Fnnnnmou A. EAST- MAN, a citizen of the United States, residingat Rockford, in the county of lVinnebago and State of Illinois, have invented certain new and useful Improvements in Pencil-Sharpeners, of which the following is a specification.

The object of this invention is to construct a pencil sharpener in which knives are employed to sharpen the lead only, such knives being supported by two plates which have a movable connection, and the knives converging toward the pencil entrance.

In the accompanying drawings, Figure 1 is an underface representation. Figs. 2 and 3 are transverse sections on dotted line a a Fig. 1. Fig. 4 is a partial view. Fig. 5 is a section on dotted line b b Fig. 1.

The plate 1 has one end 2 turned at substantially right angles thereto and formed with an elongated opening 3. The other end of this plate is formed with a conical projection 4 having a lengthwise extending slot 5. A knife 6 is adjustably connected with the plate 1 and its cutting edge is located adjacent to the slot 5. A plate 7 is located adjacent the plate 1 and is connected thereto by the lips 8 extending throughopenings 9 in the plate 1. From the plate 7 extends a projection 10 which contacts with the plate 1 and forms a stop to the opening movement of the plate 7.

The plate 1.is formed with an inclined lip 11. To this lip is connected a knife 12 by the screw 13. This knife conforms to the inclination of the lip. Over the knife 12 is located a curved plate 14 which is held in place by the screw 13. The plate 7 is formed with an inclined lip 15. To the li is connected a knife 16 by the screw 1 This knife conforms to the inclination of the lip. Over the knife 16 is located a curved late 18 which is held in place by the screw 1%.

In use the wood portion of the pencil 19 is removed by turning it in the conical proj ection 4 against the knife 6 until the lead 20 is sufficiently exposed. The knife 6 is not intended to sharpen the lead, as the opening at the smaller end of the conical projection 4: will admit the projection of the uncut lead through it. The exposed lead end of the pencil is inserted through the opening 3 in the end 2 and in contact with the inner faces of the plates 1 and 7 which will separate the knives 12 and 16 and admit the entrance of the lead between them. Each time the lead is forced against these knives some of the lead will be removed until a point will result. The pencil is partially rotated between the cuts. Should it be desir* able to produce a flat point to the pencil, it will not be rotated, as the two knives 12 and 16 will remove equal quantities from opposite sides of the lead.

The curved plates prevent the lead dust or particles from soiling the fingers.

The knives 12 and 16 point toward the throat or pencil entrance between the plates 1 and 7.

So far as I am aware, I am the first to construct a pencil sharpener in which the lead only is sharpened point first against a knife. By this construction, the point of the lead is not broken as the last of the cutting action is adjacent the wood portion of the pencil.

The curved plates serve as a rest for the thumb and fore finger of the hand of the operator in using the sharpener, and the pressure exerted on the knives 12 and 16 can be regulated at will. The opening 3 in the end 2 is of a size to limit the entrance of the pencil between the plates, by coming in contact with the angle of the wood portion of the pencil that has been cut away by the knife 6.

I claim as my invention.

1. In a pencil sharpener, the combination of a lead receptacle, and a knife located in the receptacle, said knife located transverse to the length of the receptacle and pointing toward the lead entrance.

2. In a pencil sharpener, the combination of a lead receptacle, and knives held by the receptacle and located transverse to the length of the receptacle and pointing toward the lead entrance.

3. In a pencil sharpener, the combination of a lead receptacle having yieldin sides, and a knife held by one of the si es and pointing toward the lead entrance.

4. In a pencil sharpener, the combination of a lead receptacle having yielding sides, means for limiting the opening movements of the sides, and a knife supported by one of the sides and pointing toward the lead entrance.

15. In a pencil sharpener, the combination of a lead receptacle having yielding sides, a knife supported by one of the sides and pointing toward the lead entrance, and a plate overlying the knife.

6. In a pencil sharpener, the combination of a lead receptacle having yielding sides,

means for limiting the opening movement of the sides, a knife supported by one of the sides and pointing toward the lead entrance, and a plate overlying the knife.

7. In a pencil sharpener, the combination of two plates movably connected, and aknife supported by one of the plates, the end of one of the plates formed with an opening.

8. In a pencil sharpener, the combination of two plates, movably connected, and a knife supported by one of the plates, the

end of one of the plates formed with an elongated opening.

9. In a pencil sharpener, the combination of sides yieldingly connected, and a knife held by one of the sides and pointing toward the lead entrance.

10. In a pencil sharpener, the combination of sides yieldingly connected, and a knife held by each side and pointing toward the lead entrance.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FREDERICK A. EASTMAN.

Witnesses IX. 0. BEI-IEL,

E. D. E. N. BEHEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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