US570617A - Pencil-sharpener - Google Patents

Pencil-sharpener Download PDF


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US570617A US570617DA US570617A US 570617 A US570617 A US 570617A US 570617D A US570617D A US 570617DA US 570617 A US570617 A US 570617A
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    • B43L23/00Sharpeners for pencils or leads
    • B43L23/08Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades


(No Model.)
' PENCIL SHARPBNER. NO- 570,617- y Patent-ed Nov. 3,-1896- f wifljzsse's UNITED STATES PATENT OEEICE. l
SPECIFICATION forming part of Letters Patent No. 570,617, dated November 3, 1896.
Application filed October 22, 1894;. Serial No. 526,656. (No model.)
To a/ZZ whom it may concern:
Be it known that I, LEONA A. STOUGH, a
citizen of the United States, residing at Durango, county of La Plata, and State of Colorado, have invented a new and useful Pencil- Sharpener, of which the following is a specification.
The invention relates to improvements in pencil-Sharpeners.
The object of the present invention is to provide a combined pencil-Sharpener and paper-weight adapted to be placed on a desk or other suitable support and capable of rapidly sharpeninga pencil and of collecting the shavings and preventing the accumulation of the same on the desk or other support.
The invention consists in the construction and novel combination and arrangement of parts, hereinafter fully described, illustrated in the drawings, and pointed out in the claims hereto appended.
In the drawings, Figure 1 is a side elevation of a pencil-Sharpener constructed in accordance with this invention. Fig. 2 is a vert-ical sectional view of the same.
Like numerals of reference designate corresponding parts in both the iigures of the drawings.
l designates a base from which rises a centrally-arran ged screw 2, having a spiral groove 3, and receiving a nut 4 of a vertically-reciprocating rotary pencil-holder 5. The pencilholder 5 consists of a head 6 and a tubular shank 7 ,carrying the nut 4 at its lower end,and
adapted, when the holder is depressed, to receive the screw 2. The head is provided with a conical cavity 8 for the reception of the end of apencil, and it is open at one sidefor the discharge of shavings, and it has mounted on it at the opening an inclined blade 9. The blade 9 is provided with an inner cutting-edge, and is adjustable by any suitable means, preferably slots 10 and screwsll, and it is capable of being readily detached for grinding or otherwise sharpening. As-the pencil-holder is forced downward, the screw causes it to rotate, the pencil being held stationary by the operator, and the knife is thus carried around the pencil and effects a sharpening of the latter. After the holder has been depressed it is raised automatically by a coiled spring l2, disposed on the screw and interposed between the base and the lower face of the nut. The screw is preferably provided with a groove and the nut has a thread 13 but the construction may be reversed, if desired.
In order to collect the shavings and prevent them from becoming scattered over a desk or other support, a substantially cylindrical receptacle 14: is employed and is mounted on the base and surrounds the screw and the lower portion of the pencil-holder, and it is provided with a central tubular portion 15, which forms a casing for the screw and the nut and which prevents any shavings or pencil dust accumulating on the screw and clogging the device. The central tubular portion 15 is provided at its top with an inwardly-extendin g horizontal ange 16, which forms a stop for the screw to limit the upward movement of the pencilholder. The device may be readily inverted to discharge the contents of the receptacle.
It will be seen that the combined pencil- Sharpener and paper-weight is exceedingly simple and inexpensive in construction, that it is capable of rapidly sharpening a pencil, and that -it is adapted to collect the shavings, dust, and the like and will prevent the same from becoming scattered over a desk or other support.
Changes in the form, proportion, and minor details of construction may be resorted to without departing from the principle or sacrificing any advantages of the invention.
l. In a pencil-Sharpener, the combination of a screw, a rotary vertical movable pencilholder provided with a nut engaging the screw, a blade mounted on the pencil-holder and arranged to discharge pencil shavings exteriorly of the holder, and a receptacle receiving the screw, open at its top and adapted to receive such shavings, substantially as described.
2. A pencil-Sharpener comprising a base, a screw mounted on the base, a pencil-holder having a tubular shank and provided with a nut engaging the screw and adapted to be rotated by the same, a blade carried by the pencil-holder, a spring for raising the pencilholder, and a receptacle mounted on the base and provided with a central tubular portion receiving the screw and nut and forming a casing for the same, substantially as described.
1o Lnd adapted to receive the shavings, said reeeptaele being provided with L central tubulair portion housing the screw Lnd the nut md forming L stop for the nut, Lnd L spring disposed on the screw and engaging the nut, substantially Ls described.
LEONA A. STOUGII. lVitnesses:
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237607A (en) * 1964-11-09 1966-03-01 Patrick R O'brien Pencil sharpener
US4231405A (en) * 1978-06-05 1980-11-04 Vila Jose F Pencil driven mechanical pencil sharpener
GB2414714A (en) * 2004-06-02 2005-12-07 Azhar Ali Shah Pencil sharpener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237607A (en) * 1964-11-09 1966-03-01 Patrick R O'brien Pencil sharpener
US4231405A (en) * 1978-06-05 1980-11-04 Vila Jose F Pencil driven mechanical pencil sharpener
GB2414714A (en) * 2004-06-02 2005-12-07 Azhar Ali Shah Pencil sharpener

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