US1479190A - Sharpening device - Google Patents

Description

G. B. LINDSAY SHARPENING DEVICE Filed July 1921 2 Sheets-Sheet 1 Jan, 1', 1924 1,479,190 I G. B. LINDSAY SHARPENING DEVICE z I v v i F764. 5 m... 4. A

u 4 a mam may 6 mun 1 Patented Jan. 1, 1224.

uarraa stares tie earner oaaic GEORGE BENJAMIN LINDSAY, or KoKoMo, INDIANA.

SHARPENING- DEVICE.

Application filed July a, 1921.- Serial No. 483,440.

ful Improvements in Sharpening Devices, of

which the following isa specificatiom'the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to sharpening devices adapted to sharpening disk harrow blades or the like. The object of the invention is to provide a device of the above described character which may be mounted upon a harrow and so arranged as to exercise its sharpening function during the ordinary operation of the harrow.

The said invention consists of means hereinafter fully described and particularly set forth in the claims.

More specifically, the invention comprises a suitable sharpener frame which carries an abrading member, together with an auxil iary frame-bar which may be detachably secured to the harrow frame adjacent to the disk, the arrangement being such as will permit the sharpening device to be secured at various positions along said bar, whereby its sharpening function may be directed to any one of the disks which may require such sharpening. Y

.The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of the various mechanical forms in which the principle of the invention may be applied.

In said annexed drawings:

Figure 1 represents a plan of a disk harrow to which my invention has been applied;

Fig. 2 represents, upon an enlarged scale, a front elevation of the sharpening device;

Fig. 3 represents, upon such enlarged scale, a side elevation of said device, a part of one jaw being broken away to disclose an abrading member and its mounting;

Fig. 4 represents a section taken upon the plane indicated by the line IV-IV, Fig. 3;

Fig. 5 represents a section taken upon the plane indicated by line V-V, Fig. 3; and

Fig. 6 represents a detail section taken upon the plane indicated by the line VIVI,

5 Fig. 4.

tion includes a frame-bar 1, Fig. 1, which is detachably securable by means of suitable bolts 2 to any one of the cross-members 3 forming part of the auxiliary harrow frame upon which'the disks are directly mounted.

Thisbar when secured in place as shown, extends backwardly and parallel with the disk axis, and is provided with a multiplicity of holes 4, two of theseholes being located above and adjacent to the rear por' tion of the peripherv in each disk. These holes are adapted to receive the upper ends of two angle rods 5-5, Figs. 2 and 8. The upper ends of the vertical members of rods 5-5 are threaded and provided with the jam-nuts 66. These upper ends are securable to bar 1 by means of thumb-nuts 7 co-operating with the jam-nuts 6.

The ends of the horizontal members of rods 55 are flattened as at 8, Figs. 3 and 4,

and are bolted to opposite sides of a block 9 through which extends vertically a pivot pin 10. This pin forms a journal for two jaws 11 and 12. The horizontal arms of the rod 5 extend as shown in Fig. 1, backwardly {and perpendicularly to the frame bar 1.

Intermediate of their ends and in these jaws are formed two apertures through which extends abolt 13, whose ends are threaded and provided with nuts 14 -14. Intermediately of these nuts and around the bolt, are interposed two coiled springs 1515 whose inner ends bear against the outer surface of the jaws and whose outer end surfaces bear against the nuts 14. These nuts may therefore be adjusted so as to cause the coil springs to actuate the outer or free ends of the jaws toward each other. The outer or free end of jaw 11 is formed with a bifurcated boss 16 in the open space of which is mounted a carrier 17 for the cutting member 18 consisting preferably of an ordinary file of a character suitable for cutting the periphery of a harrow disk. This carrier 17 is pivotally secured in this boss by means of pivotal screw-pins 1919, as shown in Figs. 3 and 4, and consists of a block provided with a rectangular way 20 into which the cutting member or file 18 may be inserted, its position in this way being secured by means of a set screw 21, shown in dotted lines in Fig. 4.

The jaw 11 is furthermore provided with a laterally extending boss 22 in which is mounted an oscillatory pin 23, Figure 6. This pin is provided with a threaded openlit) ing '24 which is engaged by a screw 25 hav-.

ing its outer end provided withja thumb piece 26 and also passing through a laterally enlarged opening 27 formed in the boss. It will be noted that the screw may, as a result of the above described structure, have,

a limited amount of oscillation imparted to it. The inner end of this? screw articulates with a boss 28 formed upon the block 17, being longitudinally. secured therein. by means of a pin 29 engaging-a groove 30 formed in the engaging end of saidscrew,

. also as clearly shown in Fig. 6;

By turning the screw25, it Willbe seen that the block 17 and hence the eutti-ng mem-v ber 18 may be'adjusted upon their common.

axis of oscillation.

The outer or free end of the other-jaw 12 is 'also provided with a bifurcated boss- 31 in which is mounted an anti-friction roller 82 having an axis at right angles with the axis of oscillation of the block- 17.

The above described device is secured in the desired position upon the haul, the nuts 14 having first been turned so as to permit;-

the jaws 11 and 12 to become separatedso. as to allow their outer ends to enclose the ads jacent harrovv disk. The nuts lt'now being turned so as to compress the springs 15...1 5,v

the jaws, close until the anti-friction roller 32 comes into contact with the concave side of the disk and the cutting member 18 into contact. "with that portion of the disks pe riphery which it is desired to. cut and so effect the required sharpening, The screwv 25 is turned so as to im part tov thecuttin member the desired angular;positi on a1l as will be readily understoodby those skilled in the art. 7

In addition, to the above deseribedparts, I have alsogprovided a resilient, member 33 which is. secured to that side of the. block 9 adjacent tothe jaw 11, by means of suitable screws 34, Fig. 2, and whose outer end portion is adaptedto lie; against the convex side of the disk, as shown in Fig. 4, and act' the combination of a suitable frame-member two' relatively movable jaws mounted uponthe latter; can abradingmember pivotally. mountedupon one of said jaws;

means tending to close-the latter; and means foradjusting: said abrading member upon spiwt -l. s-

A disk-sharpening device comprising the combination of a suitable frame-member,;two jawspivotally mounted upon the latte 1 an abrad'i -ng member pivotally mounted upon one of said jaws, an antifriction; roller. mounted upon the other of said-,,j;a ws, means tending to close the latter, and means for adjusting said abrading n'ieinber upon its pivotal axis.

3. A disk sharpening device comprising thecombinati n of a suitable support a bloclrsecured to said'supportk; two jaws pivotally mounted upon the same block; a cutting member oscillatorily mounted in the free endoifone of said jaws soas to permit;;,it to bemovedtoward and from the other jaw end a pivotally mounted adjusting screw carried by the jaw upon which said cutting member is. mounted, and havg" ne and nssa eg't l te d a s tendingtoqclose said two. jaws. H Signed byme this28 day of June, 1921.

eEoneE BnNJa-MINfLiNDsi-ir;

Images