US831861A - Pencil-sharpener. - Google Patents

Pencil-sharpener. Download PDF

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Publication number
US831861A
US831861A US29630106A US1906296301A US831861A US 831861 A US831861 A US 831861A US 29630106 A US29630106 A US 29630106A US 1906296301 A US1906296301 A US 1906296301A US 831861 A US831861 A US 831861A
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pencil
sharpener
worm
disk
frame
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US29630106A
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Heinrich Friedrich Hambruch
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L23/00—Sharpeners for pencils or leads
    • B43L23/008—Sharpeners for pencils or leads with rotating cutting bodies

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  • HEINRICH FRIEDRICH HAINIBRUCH OF HAMBURG, GERMANY, ASSIGNOR OF ONE-HALF TO FRANZ IVILHELM GEORGE HARRY FISCHER, OF
  • This invention relates to improvements in i machines for sharpening pencils and the like and the object 1s to construct a machine which will speedily and economically sharpenv a pencil.
  • the invention consists in means for rotating and gradually 'feeding the pencil against a rotating drum or disk which is provided on its periphery with cutting means, and, further, in constructing this disk so as to allow for easily redressing its cutting means-that is, for sharpening the same.
  • FIG. 1 a side view of the machine is shown, partly in section.
  • Fig. 2 shows an end view, partly in section, and
  • Fig. 3 a top view.
  • Fig. 4 a side view, and in Fig. 5 an end view, of a modilication is shown, partly in section.
  • the machine is supported in a frame A, to which a pivot-pin a is horizontally attached.
  • This pin is surrounded by a sleeve a', carrying a cutting disk or drum l) and a toothwheel d, gearing with a pinion f, the shaft c of which is j ournaled in a small movable frame m.
  • This frame m is pivotally attached to the main frame A by a pin z and is provided with a socket i, into which the pencil to be sharpened is placedl
  • a spiral spring h bears with one end against a lug 7L on the main frame A and with its other end against a lug h2 on the movable frame m, thus tending to force the latter downward and the point of the pencil against the cutting-surface of the disk or drum b.
  • This cuttingsurface may be obtained by covering the periphery of the disk with any cutting material, such as emery, glass, flint, sandpaper, perforated sheet metal, (steek) knife-blades, &c.
  • a worm e is iixed, the helical thread of which has a gripping edge contacting with the pencil, so as to rotate and at the same time feed the pencil forward when the worm is turning.
  • This is done by means of a handle g, attached to the disk b, the rotation of which is transported to the shaft c of the worm e by the gearings d andf.
  • the sharp or gripping edge of the worm-thread partly enters the material of the pencil, thus securing a good grip on the same.
  • a plate Z is attached adjustably to the frame m.
  • the disk is of the shape of a drum, provision may be made to shift it axially on the sleeve d, so as to bring a new part of the surface opposite the pencil when the part in use is worn out or has become blunt.
  • This adjusting may be done by providing the sleeve a with an outer and the boss of the disk I) with an inner thread and by arranging Va lock-nut B on the sleeve a for rigidly locking the disk b to the sleeve a when the adjusting is carried out.
  • the worm is to be made of a suitable length, and a corresponding number of sockets i would have to be fastened to the frame m.
  • the disk b is of the shape of a circular cutter or saw, which easily can be sharpened similar to an ordinary saw.
  • This cutter-disk may be made of steel plate and is preferably rigidly attached to the sleeve a2. It is about of such small breadth as may correspond with the contact-surface of the pencil.
  • the socket i2 has a thicker wall than in the first-shown construction and is provided with a slot into which the cutter b projects, thus forming a guide for the same.
  • the frame m may be rigidly attached or, if desired, adjustably attached to the main frame A, in the latter instance for permittinfr an adjustment of the position ofthe pencil when the teeth of the cutter are worn out and shortened by sharpening. The teeth are so directed that the cutter may rotate in the direction of the arrow.
  • the frame fm forming the pencil-holder, is attached to the main frame by means of a screw z.
  • a pencil-Sharpener comprising a worm for rotating and feeding the pencil, the thread of which worm having a sharp edge for partly entering the material of the pencil IOC -in combination With a rotatable cutter against the periphery of which the pencil bears.
  • a pencil-sharpener comprising a Worm directly engaging the pencil for rotating and feeding the same and a frame on which the shaft carrying such Worm is journaled and Which is provided With a socket for carrying and guiding the pencil in combination With a rotatable cutter against the periphery of which the pencil bears.
  • a pencil-sharpener comprising a Worm directly engaging the pencil for rotating and feeding the same and a movable frame on Which the shaft carrying the Worm is journaled and which is provided With a socket forcarrying and guiding the pencil in combination with a rotatable cutter and a spring tending to force the movable frame in such direction as to press the pencil against the periphery of the cutting-disk.
  • a pencil-Sharpener comprising a Worm for rotating and feeding the pencil and a rotatable cutting-disk of small breadth having 25 j teeth onits periphery for operating upon the point of the pencil, When the latter is fed and rotated.

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Description

PATENTED SEPT. 25, 1906.
H. F. HAMBRUGH.
PENCIL SHARPENER.
APPLICATION FILED JAN. 1s, 190e.
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No. 831,861. PATENTED SEPT. 25, 1906.
H. F. HAMBRUGH.
PENCIL SHARPENER.`
APPLICATION FILED JAN. 16, 1906.
2 SHEETS-SHEET 2.
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UNTTED STATES PATENT OFFICE.
HEINRICH FRIEDRICH HAINIBRUCH, OF HAMBURG, GERMANY, ASSIGNOR OF ONE-HALF TO FRANZ IVILHELM GEORGE HARRY FISCHER, OF
HAMBURG, GERMANY.
PENCIL-SHARPENER.
Specification of Letters Patent.
Patented Sept. 25, 1906.
This invention relates to improvements in i machines for sharpening pencils and the like and the object 1s to construct a machine which will speedily and economically sharpenv a pencil.
The invention consists in means for rotating and gradually 'feeding the pencil against a rotating drum or disk which is provided on its periphery with cutting means, and, further, in constructing this disk so as to allow for easily redressing its cutting means-that is, for sharpening the same.
In the drawings, in which two modifications are shown,similar letters refer to similar parts.
In Figure I a side view of the machine is shown, partly in section. Fig. 2 shows an end view, partly in section, and Fig. 3 a top view. In Fig. 4 a side view, and in Fig. 5 an end view, of a modilication is shown, partly in section.
The machine is supported in a frame A, to which a pivot-pin a is horizontally attached. This pin is surrounded by a sleeve a', carrying a cutting disk or drum l) and a toothwheel d, gearing with a pinion f, the shaft c of which is j ournaled in a small movable frame m. This frame m is pivotally attached to the main frame A by a pin z and is provided with a socket i, into which the pencil to be sharpened is placedl A spiral spring h bears with one end against a lug 7L on the main frame A and with its other end against a lug h2 on the movable frame m, thus tending to force the latter downward and the point of the pencil against the cutting-surface of the disk or drum b. This cuttingsurface may be obtained by covering the periphery of the disk with any cutting material, such as emery, glass, flint, sandpaper, perforated sheet metal, (steek) knife-blades, &c. To the shaft c a worm e is iixed, the helical thread of which has a gripping edge contacting with the pencil, so as to rotate and at the same time feed the pencil forward when the worm is turning. This is done by means of a handle g, attached to the disk b, the rotation of which is transported to the shaft c of the worm e by the gearings d andf. In contacting with the pencil the sharp or gripping edge of the worm-thread partly enters the material of the pencil, thus securing a good grip on the same.
To prevent the point of the pencil from breaking, a plate Z is attached adjustably to the frame m. If the disk is of the shape of a drum, provision may be made to shift it axially on the sleeve d, so as to bring a new part of the surface opposite the pencil when the part in use is worn out or has become blunt. This adjusting may be done by providing the sleeve a with an outer and the boss of the disk I) with an inner thread and by arranging Va lock-nut B on the sleeve a for rigidly locking the disk b to the sleeve a when the adjusting is carried out. Should it be desired to operate upon several pencils or the like at the same time, one beside the other, the worm is to be made of a suitable length, and a corresponding number of sockets i would have to be fastened to the frame m.
In the modification shown in Fig. 4 the disk b is of the shape of a circular cutter or saw, which easily can be sharpened similar to an ordinary saw. This cutter-disk may be made of steel plate and is preferably rigidly attached to the sleeve a2. It is about of such small breadth as may correspond with the contact-surface of the pencil. The socket i2 has a thicker wall than in the first-shown construction and is provided with a slot into which the cutter b projects, thus forming a guide for the same. In this modification the frame m may be rigidly attached or, if desired, adjustably attached to the main frame A, in the latter instance for permittinfr an adjustment of the position ofthe pencil when the teeth of the cutter are worn out and shortened by sharpening. The teeth are so directed that the cutter may rotate in the direction of the arrow.
The frame fm, forming the pencil-holder, is attached to the main frame by means of a screw z.
I claiml. A pencil-Sharpener comprising a worm for rotating and feeding the pencil, the thread of which worm having a sharp edge for partly entering the material of the pencil IOC -in combination With a rotatable cutter against the periphery of which the pencil bears.
2. A pencil-sharpener comprising a Worm directly engaging the pencil for rotating and feeding the same and a frame on which the shaft carrying such Worm is journaled and Which is provided With a socket for carrying and guiding the pencil in combination With a rotatable cutter against the periphery of which the pencil bears.
3. A pencil-sharpener comprising a Worm directly engaging the pencil for rotating and feeding the same and a movable frame on Which the shaft carrying the Worm is journaled and which is provided With a socket forcarrying and guiding the pencil in combination with a rotatable cutter and a spring tending to force the movable frame in such direction as to press the pencil against the periphery of the cutting-disk.
4. A pencil-Sharpener comprising a Worm for rotating and feeding the pencil and a rotatable cutting-disk of small breadth having 25 j teeth onits periphery for operating upon the point of the pencil, When the latter is fed and rotated.
5. In a pencil-Sharpener, the combination of a rotatable member having a peripheral 3o i abrading-surface7 a Worm adapted to rotate and feed the pencil and means for preventing lateral displacement of the latter.
6. yIn a pencil-Sharpener the combination With a main frame and a rotatable member 3 5 in the last-named frame directly engaging 4o the pencil.
HEINRICH FRIEDRICH HAMBRUCH.
Witnesses:
MAX KAEMPFF, OTTO WV. HELLMRICH.
US29630106A 1906-01-16 1906-01-16 Pencil-sharpener. Expired - Lifetime US831861A (en)

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