US748768A - Disk-sharpener - Google Patents

Description

. PATENTED JAN. 5, 1904. F. MELVIN & E. BRUSSEAU.

DISK SHARPENER.

7 APPLICATION FILED SEPT. 21, 1903.

N0 MODEL.

t 6-474" I!! 'II &

No. waves.

UNITED STATES Patented January 5, 1904.

PATENT OFFICE,

FRED MELVIN AND EDWARD BRUSSEAU, OF JEFFERSON, SOUTH DAKOTA, ASSIGNORS OF ONE-HALF TO PHILIP BERNARD AND WILL R. MELVIN,

OF JEFFERSON, SOUTH DAKOTA.

DISK-SHARPENERQ SPECIFICATION forming part of Letters Patent No. 748,768, dated January 5,1904. Application filed September 21, 1903. Serial No. 174,070. (No model.)

To aZZ whom it may concern.-

Be it known that we, FRED MELVIN and EDWARD BRUSSEAU, citizens of the United States, residing at Jefferson, in the county of Union and State of South Dakota, have invented a new and useful Disk-Sharpener, of which the following is a specification.

This invention relates to that class of disksharpeners which consists of holding devices ro serving to support disks, such as are com.-'

monly used in various agricultural implements, adjustably and revolubly while such disks are being exposed to the grinding action of a grindstone or emery-wheel.

I 5 The invention has for its object to provide a device of this class which shall consist of but few parts,w'hich may be convenientlyconnected'or put together for operation, which shall be of such a nature that the disk which is to be operated upon may be easily and quickly connected therewith,the construction of which shall be such as to admit of the use of the device in connection with disks of various sizes and shapes, and which, generally speaking, shall be simple, durable, and efficient.

With these and other ends in View the invention consists in the improved construction, arrangement, and combination of parts, 0 which will be hereinafter fully described, and

particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view showing our improved disk-sharpening device in position for opera- 3 5 tion, the disk being indicated in dotted lines. Fig. 2 is a longitudinal vertical sectional view of a device with the disk mounted in position and shown in full lines. Fig. 3 is a perspective view illustrating a modified 'form. of one 0 of the members of our improved disk-sharpening device.

Corresponding parts in the several figures are indicated by similar numerals-of reference.

' 4 5 1 designates a base or pedestal provided at its lower edge with a flange 2, having perforations 3 to receive screws or bolts, by means of which the said base may be connected with a supporting-bench 4. The base or pedestal at its upper end has a recess or socket 5 to re- .ceive a spindle 6, depending from a laterallyextending bracket or frame '7, having at its outer end a cylindrical boxing 8, from which a handle 9 extends in an outward direction. The bore 10 of the cylindrical boxing is for the reception of a spindle 11, formed at the apex of a conical or funnel-shaped member 12, against the rim or edge of which the disk 13 which is to be operated upon is placed, said disk being secured in position by means of a rod or shaft 14. The. latter is provided with a flange 15, which bears against the inner side of the funnel-shaped member 12. Said shaft extends through a bore 16 in the spindle 11 and is threaded at its rear end for the reception of a nut 17, by means of which the shaft 14 is mounted in said spindle and which also serves to secure the spindle 11 in its boxing 8. It will be observed that the spindle 11 is of a length slightly exceeding that of the boxing 8, so that when the nut 17 is screwed down tightly against the end of the spindle 11 the latter may still freely rotate in the boxing 8.

The shaft 14 is extended in front of the flange15, as shown at 18, and the extension 18 is threaded at its front end, as indicated at 19, for the'reception of a crank 20, having a handle 21, whereby it may be manipulated. The inner end of the crank 20 has a rounded, 8o reinforced, ordisk-shaped member 22, which is adapted to bear against the front side of the disk which is being operated upon, thereby mounting and holding the said disk securely with relation to the funnel -shaped member 12.

The operation of this device will be readily understood. In order to place the disk in position for being operated upon by a grindstone or emery-wheel, the crank 20 is removed from the projecting end of the shaft or spindle, the disk is mounted upon the said stem or projecting portion 18 and centered with relation to the funnel-shaped member 12, after which the crank is replaced, with the disk or 5 button 22 pressing against the dished side of the disk 13, which latter is thereby retained securely in position. After the crank has been tightened sufficiently it may be rotated to cause the rotation of the funnel-shaped mo member 12 by its spindle 11 in the boxing 8, the bracket carrying said boxing being axially revoluble upon the approximately vertical spindle 6. It will thus be seen that by placing the bench upon the devices mounted in proximity to the grindstone or emerywheel the bracket 7 may be swung into position to cause the edge of the disk to be engaged by the said grinding-wheel, with which it may be held in contact with any desired degree of pressure applied to the arm 9. The disk thus exposed to the grinding action of the grinding-wheel may be rotated by means of the crank 20, so as to expose all parts of its periphery equally to the grinding action of such wheel.

In Fig. 3 of the drawings there is illustrated a modification of ourinvention which consists in substituting for the funnel-shaped member 12 a member having a plurality of prongs 25, extending from a spindle 11, which is longitudinally perforated, as shown at 16 for the passage of the shaft 14 and its related parts. It is thought that sometimes the disk may be more readily centered and properly adjusted against the points of the fork members 25 than against a complete funnel-shaped member having a continuous rim.

We desire it to be understood that we do not necessarily limit ourselves to the precise structural details shown and described in the foregoing description,but reserve to ourselves the right to anychanges and modifications within the scope of our invention which may be resorted to without departing from the spirit or sacrificing the utility of the same.

Having thus described our invention, we claim- 4 1. In a device of the class described, a socketed base, a laterally-extending bracket member having a pintle engaging said base and provided with a boxing having an outwardly-extending handle and a disk-holding member revoluble in said boxing.

2. In a device of the class described, a socketed base member, a laterally-extending bracket member having a pintle engaging the socketed base and provided with a boxing and with an arm extending outwardly from the latter, a disk-holding member having a spindle seated in said socket, and means for connecting said socket and disk-holding member with a disk to be operated upon.

3. In a device of the class described, a socketed base, a laterally-extending bracket member, a boxing and a handle member sup ported by said bracket member, a disk-holding member having a longitudinally-perforated spindle journaled in said boxing and a shaft extending through said spindle and having a flange bearing against the disk-holding member, and a nut bearing against the spindle and supporting the latter revolubly in the boxing.

4. In a device of the class described, a bracket member supporting a boxing and a handle, said bracket member being provided with a pintle, wherebyit is supported revoluoly, a disk-holding member journaled in the boxing of the bracket member, a stem connected with said disk-holding member, and a crank mounted upon said stern and adapted to bear against the face of the disk and to press against the same to support it upon the disk-holding member.

5. In a device of the class described, a disk-holding memberhaving alongitudinallyperforated spindle revolubly supported, a shaft extending through the spindle and diskholding member and having a flange bearing against the inner side of the latter and screwthreaded ends, a nut mounted upon the rear end of the shaft and bearing against the rear end of the spindle, forcing the collar upon the shaft into contact with the disk-carrying member, and means for clamping the disk to be sharpened upon the screw-threaded front end of the shaft against the disk-holding member.

6. In a device of the class described, a bracket member having a downward-extending pintle and carrying at its outer end a boxing and a handle, means for rotatably supporting the said bracket member and a diskholding member, having a longitudinallyperforated spindle journaled in said boxing, a shaft having a flange interiorly engaging the spindle of the disk-holding member and provided at its rear end with a nut engaging the rear end of said spindle, a stem extendin g forwardly from said shaft beyond the face of the disk holding member, and a diskclamping device engaging said stem and having an operating crank and handle.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of two witnesses.

FRED MELVIN.

EDWARD BRUSSEAU.

Witnesses:

C. R. LANCASTER, MIL'I HAVILAND.

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