US1200605A - Blade-sharpening device. - Google Patents

Description

CHRISTOPH GLECKLER, EARLHAM, IOWA.

BLADE-SI-IARPENING DEVICE.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed July 12, 1916. Serial No. 108,889.

To all whom t may concern.'

Be it known that I, CHRISTOPH GLECKLER, a citizen of the United States, residing at Earlham, in the county of Madison and State of Iowa, have invented certain new and useful Improvements in Blade-Sharpening Devices, of which the following is a speciiication, reference being had to the accompanying drawings.

This invention relates to devices for sharpening blades, particularly scissor blades, and the invention particularly relates to devices whereby the sharpening is done by hand, the blade being held against a whet stone.

The general object of my invention is to provide a device of this character which shall so support the blade that it shall always have a proper relation to the face of the whet stone.

A further object of the invention is to provide a very simple and easily operated device, including a base having thereon a whet stone or other abrasive element, a blade clamp whose angle to the base is always the same, and, operative means for supporting the blade clamp so that the blade clamp may have motion in practically all directions over the face of the whet stone except a movement which would change the angle of the blade with relation to the whet stone.

Still another object is to provide a device of this character comprising a base, an arm formed of a plurality of sections hingedly or pivotally connected to the base for movement in a plurality of directions, and a blade clamp connected to one section for pivotal movement toward or away from the base, this blade clamp, however, being supported at a predetermined angle to the base.

Other objects will appear in the course of the following description.

One embodiment of my invention is illustrated in the accompanying drawings, wherein- Figure 1 is a perspective view of my sharpening device; Fig. 2 is an elevation with the blade in section and the whetstone and the base being partly broken away; and Fig. 3 is a section across the arm 20 looking toward the angular member 17; Fig. 4 is a transverse sectional view through the plate 10 and the stone 13, showing the blade holder 22 in an upwardly turned position so as to sharpen the point of the blade A.

Referring to these figures, 10 designates a base which may be conveniently made of sheet metal, this base at one end being upwardly turned as at 11 and then inwardly bent as at 12. Mounted upon the base in any suitable manner is a whet stoneior like abrasive element 13, this stone being held in place upon the base by lugs 11 and the upwardly turned end iiange 15. I do not of course wish to be limited to this particular 1gianner of mounting the whet stone upon the ase.

Pivotally mounted upon the seat 12 for movement in a plane approximately parallel to the face of the whet stone 13 is an Yarm 16 and pivotally mounted upon the free extremity of this arm is an angular member 17 formed with two wings disposed at right angles to each other, the wing 18 being pivoted to the extremity of the arm 16. Pivoted to the upwardly extending wing 19 is an arm 20 and it will be noticed that this arm is slightly deflected and does not lie in the same plane for its entire length. The free extremity of this arm, therefore, is not disposed at a right angle to the face of the abrasive element 13 but at an acute angle thereto. Pivotally connected to the extremity of this arm 20 for movement in the plane of the arm 2O is a blade clamp designated generally 21, the inner face of this blade clamp having an angle corresponding to the angle of the free end of the arm 20. The blade clamp is U-shaped or V -shaped in cross section to provide a portion 22 against which the blade rests, and which I will hereafter term a blade seat, and a portion 23 through which clamp screws 24 pass which engage the face of the blade. The blade may be delicately shifted vertically in the blade clamp by means of adjusting screws 25 which extend downward through the upper end. of the clamp, there being preferably a plurality of these screws.

As illustrated, this sharpening device is particularly adapted for sharpening the blades of shears, scissors, or other implements having a beveled edge and where it is a necessity in sharpening that the blade be held so that the beveled edge has the same angle throughout rits length.

In thev actual operation of my invention the blade which' is designated A in Fig. 1 is disposed in the blade clamp and then, holding the blade `clamp in the fingers, it is an easy matter to give the blade a proper movement against the face of the'whetstone. The blade may be given a circular motion or reciprocating movement or it may be brought against the whet stone only on a movement in one direction longitudinally of the whet stone. In all movements, however, and in all positions of the blade, and of the blade clamp, the angle of the blade to the whet stone will be constantly maintained. Further, inasmuch as the blade clamp is pivoted to the arm Q0, the rounded end of the blade may also be sharpened by turning the blade clamp gradually upward on its pivot, as illustrated in Fig. el. -Thus any desired point may be given to the blade and this point properly beveled.

It will be seen that I have provided a sharpening device wherein a blade is supported upon a base by members having a universal joint, said members being arranged, however, to hold the blade in predetermined angular relation to the abrasive element.

It will further bev seen that while I have illustrated a. form of my device which I find very effective, yet the details of this device may be varied in many different ways without departing' from the spirit of the invention.

T he device may be made from sheet metal, round iron tubing, or it may be cast or otherwise formed and it is obvious that it may have various styles of hinged joints.

Having described my invention, what I claim is:

l. A sharpening device including a base, a whet stone mounted thereon, said base having at the end opposite the whet stone an upwardly extending portion, an arm pivotally connected to the upwardly extending portion of the base for movement parallel to the face of the whet stone, an arm pivotally connected to the first named arm for movement parallel to the plane thereof and at right angles to the plane thereof, the free end of said arm being deiiected into predetermined angular relation to the base, and a blade clamp pivotally mounted upon the extremity of said arm.

2. A sharpening device including a base, a. whet stone mounted thereon, said base having at the end opposite the whet stone an upwardly extending portion, an arm pivotally connected to the upwardly extending portion of the base for movement parallel to the face of the whet stone, an arm pivctally connected to the first named arm for movement parallel to the plane thereof and at right angles to the plane thereof, the free end of said arm being deflected into predetermined angular relation to the base, and a blade clamp pivotally mounted upon the extremity of said arm, said clamp including an approximately U-shaped member having blade binding screws and blade adjusting screws.

3. A sharpening device of the character described including a base, an abrasive element mounted upon the base at one end, the opposite end of the base being upwardly eX- tended and then laterally bent to form a seat, an arm pivotally mounted upon said seat for movement in a plane approximately parallel to the face of the abrasive element, an angularly bent member pivoted to the extremity of said arm and having an upwardly extending wing, an arm pivoted to said last named wing for movement in a plane perpendicular to the face of the abrasive element, said arm at its free end being deflected so as to be disposed at an acute angle to the face of the abrasive element, and a blade clamp pivotally connected to the free end of the arm.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

CHRISTOPH GLECKLER.

IVitnesses C. C. CoUoH, IVALLACE G. JACKSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner o! Patents. Washington, D. C.

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