US1576091A - Sharpening device - Google Patents

Description

J. CHAN-TRY SHARPENING DEVICE mu March 9 1926 1,576,091

Filed July 5, 1923 Patented Mar. 9, 192%.

UNITED stares rarest A was]; T ser es.

JAMES CHANTRY, OF SHEFFIELD, ENGLAND.

SHARPENING DEVICE.

Application filed July 5,

" enabling the knife or the like to be set at the correct angle to the steel or sharpen ing medium.

According to this invention a device for sharpening knives, razors and other articles having a cutting edge, comprises a base,

an upstanding pivot fixedly secured to said base at right angles thereto, a sharpening medium resiliently mounted on said pivot and oscillatable over the base in a plane parallel thereto, and a support on the base disposed in a plane parallel thereto for holding an article in the operable position be tween the sharpening medium and the base.

Referring to the drawings filed herewith:

Fig. 1 is a perspective view of one form of device made in accordance with this invention.

Fig. 2 is a detail sectional View of a modification of the pivoted sharpening medium.

Fig. 3 is a similar view showing a further modification.

Fig. i is a detail view showing modified forms of grooves for positioning the knives.

Fig. 5 is a perspective view of the base with alternative devices for positioning the knives.

a is a base of any suitable material and having on its upper face, any number of grooves b, b for supporting a knife 0 at the requisite angle against a sharpening medium (Z pivoted at one end of'the base and in such a manner as to be adjustable in its height to suit different widths of blades. This is effected in the example shown through the medium of a spring 6 disposed on the pivot pin and bearing against the sharpening medium (Z and a Washer g on the pivot pin, said washer being adjustable on the pin f through the medium of a lock nut h on a threaded portion of said pin. This pivot pin is suitably secured to the base in any convenient manner.

in a universal swivel or 1923. Serial no. 649,690.

In operation, the blade of a knife is inserted in one of the grooves Z2, as shown, and the sharpening medium manipulated over it. in' a horizontal plane, that is by moving the said sharpening medium radially about its pivot, which thereby sharpens the blade on one side. The blade is then inserted in another of the grooves so as to dispose the blade with its other or un sharaened side against the sharpening medium and the manipulation thereof is repeated whereby the blade is completely sharpened.

Although I have illustrated a steel as the sharpening medium, any other suitable medium, -or example, a file, carborundum stick or other abrasive member, may be used.

Further, the sharpening medium can 56' pivoted in such a manner, say, for example, ball joint 9' asshown in Fig. 2, that it can be rotated *to con stantly vary its circumferential contact with the knife or it may be pivoted in any other suitable manner to achieve the same object.

It is also to be understood that this improved device is applicable for the use of existing steels by having a'pivoted and/or swivelling socket/ c for the reception of the point of an ordinary steel m which, when manipulated as before described, effectively sharpens a knife or the like.

Fig. 4 shows a modification in the form of groove. which may be employed, this being in the form ofa double groove, the one 0?. being smaller to take knives too narrow for the larger groove 0.

Any suitable form of handle or holder may be fitted to'the steel or other sharpening medium and any number of grooves may be provided. 7 I

l n the form shown, two grooves are shown on both sides of the pivoted sharpening medium, the two on one side crossing the two on the other side, but one groove only, or more than two grooves, may be provided as desired.

If desired, the base 03 may be provided with supports p, p as shown in Fig. 5 suitably shaped to position the knife, the blade being supported at each of its ends or other convenient points. l

Knives of all kinds, razor-s, scythes and in fact almost any tool having a cutting edge can be sharpened or dressed with a device made according to this invention.

It is to be understood that any number of either of the double or. single grooves or both may be employed and that they may be disposed at any angle to the axis of the base or holder and ivhere necessary, said grooves may cross one another at any point.

What I claim and desire to secure by Letters Patent is z- 1. A sharpening device comprising a base, an upstanding pivot fixedly secured to said base at right angles thereto, a sharpening medium resiliently mounted on said pivot and oscillatable over the base in a plane parallel thereto, and a support onthe base disposed in a plane parallel thereto for holding an article in the operable position between the sharpening medium and the base. i

2. A sharpening device comprising a base, anupstanding pivot fixedly secured to said base at right angles thereto, a sharpening medium resiliently mounted on said pivot and oscillatable over thebase in a plane parallel thereto so that it may be moved radially and circumferentially relatively to an article, and a grooved support onthe base disposed in a plane parallel thereto for holding an article in the operable position between the sharpening medium and the base.

3; A sharpening device comprising a base,

an upstanding pivot fixedlysecured to said base at right angles thereto, an oscillatory sharpening medium resiliently and rotatably mountedabout said pivot so that it may be passed over an article in a plane parallel to the base, and a grooved support on the base disposed in a plane parallel thereto for holding an article in the operable position between the sharpening meliuni and the base.

4:. A sharpening device comprising a base, an upstanding pivotvfixedly secured to said base at right angles thereto, a sharpening medium resiliently mounted on said pivot and oscillatable over the base in a plane parallel thereto, and a support having corelated grooves for holding articles of difi'en ent widths in the operable positionbetween the sharpening medium and thebase.

5. A shar-peningdeiuce comprising a base, an upstanding'pivotfixedly secured to said base at right angles thereto, a sharpening medium resiliently mount-ed" on said pivot and oscillatable over the base 111 a plane parallel thereto, and -a grooved support on the base disposed in aplane parallel thereto for holding an article in thefoperable position between the sharpening medium and thebase, and means for regulating the de gree of resilience to said sharpeningmedium. In testimony whereofil afiix my signature.

JAMES GHANTRY;

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