US701027A - Pencil-sharpener. - Google Patents

Description

No. 7o|,o27. Patented May 27,1902.

.1. H. FAssETT s. J. E. WARREN.

PENCIL SHABPENER.

(Application led Apr. 4, 1901.)

UNITEDl STATES PATENT OFFICE.n

JAMES H. FASSETT, OF NASI-IUA, AND JOHN E. \VARREN, OF GREENFIELD, NE\V HAMPSHIRE.

PENCIL-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 701,027, dated May 27, 1902. Application filed April4, 190i.. Serial'No.` 54,376- (Nomodel.)

To n/ZZ whom it may concern,.-

Bc it known that we, JAMES H. FASSETT, of Nashua, and J OHNE. WARREN, ofGreenfeld, in the county of Hillsboro and State of New Hampshire, have invented a new anduseful Improvement in Pencil-Sharpeners, of which the following is a specification, reference being had to the accompanying drawi-ngs,'in which- Figure lis a front elevation of our new pencil-Sharpener. Fig. 2 is a plan view of the same. Fig. 3 is a central longitudinal sectional view of the pencil-holding device. Fig. 4 is a sectional View on line A A, Fig. l; and Fig. 5 is a detail showing a modification hereinafter referredl to. Fig. 6 is a sectional View on line B B, Fig. 5. i

Our invention relates to improvements in machines for sharpening lead-pencils and for like purposes; and the object of our invention is to provide a machine which gives the wood a drawing cut-that is, a cnt along the grain of the wood.

Another object of our invention is to provide a machine in which the cutters may be readily changed, sharpened, or replaced.

A third object of our invention Lis to pro-f vide asimple and ei'licient means for holding the pencil.

A fourth object of our'invention isto pro-1 vide a machine which is of simple, durable,l

and cheap construction and of great capacity.

In the drawings illustrating the principle of our invention and the best mode in which we have contemplated applying that principle, a is the supporting-base, upon which are the standards ZJ and c. In standard b is journaled the shaftp of the pinion d, that meshes with the gear e, the shaft of which is journaled in the standard c. Fast upon the same shaft with the gear e is the bevel-gear f, that meshes with the bevel-gear g. The hollow shaft h of the bevelgear yg is journaled in the standard t', which is pivotally secured atj to the basca, so that the standard t' may be swung horizontally. The pencilY Zt' is held within a split sleeve ofVspring-metal Z, that passes vthrough the hollow shaft h. The nut m serves to lock the pencil k tightly within the sleeve. The cutter-plate n is detachably secured by the screw o to the shaft p, so that itrotates therewith. The knives q are twoedged, as shown in horizontal section in Fig. 4. When the knives are dulled, the cutterset of cutting edges into use.

Fig. 5 shows a modification in which the pieces fr," having file-surfaces, are inserted between the knives q near their bases. These .plate ,may be reversed, so as to bring a new tile-surfaces serve to grind the lead to a fine .6o

point.

The operation of our new pencil-Sharpener is as follows: The operator by means of the handle s turns the gear e, and thereby causes the pinion d and the bevel-gear g to rotate.

sleeve Z by the resiliency thereof and by the 7o nnt m. The rotation of pinion oZ causes the rotation of the cutter-plate n, secured to the shaftp by the screw o. The standard 'L' being pivotallyV mounted atj on the base, the pencil `is thrown into and out of contact with the knives q by rotating the standard t on its vertical pivot The ratio of the gearing is such that the number of revolutions of the cutterplate n is gmany times that of the pencil lc,

andthe number of' knives q on the plate n 8o being large it results that the number of cuts `made during one rotationv ofl the pencil is very large. Hence the number of pencils which may be sharpened in' a `given time or the capacity of the machine is large. the knives q are two-ed ged, a simple reversal of the cutter-plate n will present a new set of cutting edges. Since Ithe cutter-plate is detachably secured, it may be removed and the knives sharpened, a new or resharpened cntter-plate being substituted for the one dulled.

Machines of this class aregenerally used by olice help, school-teachers, pupils, and others little accustomed to mechanical de- Since vices. Therefore it is essential that the ma- 95 chines should' be simple in construction, not liable to get out of order, and easily repaired and adjusted. These requisites our machine meets completely.

Vhat we claim isl. A pencil-Sharpener comprising a sup porting-frame, mechanism for holding the pencil, a rotary cutter-plate havin g two-ed ged knives projecting radially therefrom and adapted to make a drawing cut along the pencil, said cutter-plate being detachably and reversibly secured to a shaft, and mechanism for rotating the cutter-plate.

2. A pencil-Sharpener comprising a supporting -frame, mechanism for holding the pencil, a rotary cutter-plate having two-edged knives projecting radially therefrom, said cutter-plate being detachably and reversibly secured to its shaft, and mechanism for rotating the cutterplate.

v cured to the shaft of said pinion; a drivinggea'r that meshes with said pinion; said gear having a shaft; a standard; a rotary pencilholder in said standard; and a pair of intermeshing bevel-gears, one fast upon the shaft of said driving-gear and the other fast to said rotary pencil-holder.

6. In a pencil-Sharpener, a device for holding the pencil comprising a spring-metal sleeve having a yielding annular projection ou its interior for securing the pencil near one end, and having its other end tapered and slitted and provided with screw-threads on its exterior, and a locking-nut which secures said screw-threaded end to secure the pencil at said end.

7. In a pencil-Sharpener, the combination of a supporting-frame; a driving-shaft rotatively mounted.A therein; a cutter provided with radially-projecting arms sharpened at both their edges and reversibly mounted on said driving-shaft; means for detachably securing said cutter to said driving-shaft; a pencil-holder mounted on said supportingframe; and means for revolving a pencil in cutting contact with said cutter.

In testimony whereof we have hereunto set our hands, in the presenceof two subscribing witnesses, at Nashua, county of Hillsboro, State of New Hampshire, this 19th day of March, A. D. 1901.

JAMES Il. FASSETT. JOHN E. WARREN. Witnesses:

THOMAS F. MoRAN, NELLY A. COURTNEY.

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