US1192865A - Grinder. - Google Patents

Description

W. W. CHENEY.

GRINDER.

APPLICATION FILED NOV. 1. 1915.-

Patented Aug. 1, 1916.

19 TTOfl/YEY W Z i INVENTOF? WALTER W. CHENEY, OF MANLIUS, NEW YORK, ASSIGNOR TO S. CHENEY & SON, OF

MANLIUS, NEW YORK, A CORPORATION OF NEW YORK.

GRINDER.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application filed November 1, 1915. Serial No. 59,040.

T 0 all whom it may concern:

Be it known that I, WALTER WV. CHENEY, a citizen of the United States of America, and resident of Manlius, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Grinders, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in grinders, of the type disclosed in Letters Patent of the United States to George H. Fowler numbered 629,069, dated July 18, 1899.

The primary object of the invention is to produce a grinder of this type having adjustable means for accommodating the same for grinding mowing machine cutter bars of various lengths, and for varying the angle at which said bar is supported relative to the grinding wheel.

Other objects relate to improvements in details of construction and operation, as will appear from the following description taken in connection with the accompanying drawings, in which Figure 1 is a top plan View of the grinder. Fig. 2 is a side elevation, partly in section, of the same. Fig. 3 is a central vertical sectional View of the grinder.

The invention comprises an uprightpost -lcarrying a stub shaft 2 upon which is rotarily mounted a relatively large gear wheel 3 adapted to mesh with a relatively small gear wheel 4- mounted upon a shaft -5- journaled in a bearing -6 supported on the post 1. The gear wheel -3 is provided with a handle -7 for rotating the same, whereby the gear wheel 4 is reversely rotated at a relatively high rate of speed. The post 1 also carries a ball 8 having a transverse passage. The ball 8 is adapted to fit into a split, substantially spherical socket formed by two separate members 9 and 10 secured to each other and to the ball by bolt -11 passed through said members and through the opening in the ball, and provided with a suitable locking nut 12.

A suitable platform 13 is secured tothe ends of the members 9- and l0 by bolts 14. and 15, the platform being similar to that shown in the patent relative to the bearing 6.

above identified and adapted to fit and be secured to the wheel of a mowing machine or any suitable bench or table.

The shaft 5 projects inwardly some distance from the post 1- and has journaled thereon a suitable grinding wheel l(3 of emery or other desirable material, and upon the intermediate portion of the platform l3- and adjacent the grinding wheel -16 a suitable bracket 17 is mounted, adapted to carry a movable knife rest 18. The opposite ends of the platform -13 are provided with openings -19] for the reception ofone end of a suitable supplemental knife support -20 hav ing its end 21- bent in such shape that when engaged with the openings 19, the knife rest is inclined upwardly at an angle to the platform -13. The opposite end 22 of rest 20' isbent in the form of a loop adapted to receive and hold the cutter bar. The rest 20 is formed of two parallel extending members 23 and 24 in this specific illustration of substantially equal length, the member 23 having its end portion 21 adapted to engage the openings --19, and the member 2 lhaving its end formed in the loo-p 22. The oppositely disposed ends of members -23 and 24 are threaded for engagement with internally threaded openings in suitable clips 25, the intermediate portion of such bars being slidably passed through the clip with which the other bar has a threaded relation, and a suitable set screw 26--- is provided in connection with one of said clips for adjustably holding the clip in fixed position with respect to the bar with which it has a slidable relation.

The device embodies also a tool rest 27 having a substantially semi-circular hub 28- mounted upon bearing 6- and provided with a set screw 29 for looking it in any desired position of adjustment The tool rest comprises a finger 30 extending substantially parallel with the axis of the grinding wheel -16- and spaced a short distance therefrom, and this finger forms a rest for the tool.

In operation, the cutter bar may rest at spaced points upon the pivoted knife sup port 18 and the loop 22 upon the supplemental knife bar support. The operator can then manipulate the knives with one hand While turning the gear 3 by handle 7 with the other hand.

In order that the knives may be supported at the prpe1-position with respect to grinding wheel l( and for the purpose of adapting the device particularly to knife bars of various lengths, the supplementary knife support is, as shown and described, inclined upwardly with respect to the plane of the platform -13, and by adjusting the two parts 23 and 24. of the support relative to each other the dis tance between the knife rest 18 and the loop -22 may be varied and automatically with the variance of the spaced distance of the said two members the angle at which the cutter bar is supported islikewise varied, due to the inclination of the supplemental knife bar support.

Although I have shown and described one particular construction and method of ac complishing the objects herein described, I do not desire to limit myself to the same, as

" many changes may be made in the details of construction, arrangement and operation without departing from the spirit of this invention as set forth in the appended claims.

Vhat I claim is 1. In a grinder, a grinding wheel, means for rotating the same, a platform, a longi tudinally adjustable supplemental knife bar support mounted on said platform and inclined upwardly at an angle to said platform, and means for holding said support in any desired position of adjustment.

2. In a grinder, a grinding wheel, means for rotating the same, a pivoted knife support adjacent the grinding wheel, and a supplemental knife bar rest having a knife receiving portion, and means for varying the distance between the knife bar rest and the receiving portion of said supplemental knife bar support.

3. In a grinder, a grinding wheel, a platform, a knife support pivotally mounted on the platform, and a longitudinally adjustable supplemental knife rest mounted upon one end of said platform.

4.. In a grinder, a grinding wheel, a platform, a knife support pivotally mounted on the platform, a longitudinally adjustable supplemental knife rest mounted upon one end of said platform and inclined at an angle to the plane of said platform.

In witness whereof I have hereunto set my hand this th day of October, 1915.

IV ALTER W. CHENEY.

lVitnesses:

ETI-IEL E. A. TEMPLAR, F. F. CURTIS.

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

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