US1840899A - Weeder tooth and mount - Google Patents

Description

Jan. 12, 1932. s. 1.. HALL 1,340,899

WEEDER TOOTH AND-MOUNT Filed Oct. 17, 1950 Patented Jan. 12,1932

UNrr n STAT-ES SAMUEL L. HALL, or BELLEF'ONTAINE, 'oHIo WEEDER TOOTH AND MOUNT Application filed. October 17, 1930.1.Seria1 No.

The invention relates to weeder teeth and mounts particularly adapted for use in the cultivation of corn without plowing, and particularly for working clay soil after it has become crusted. r

A further object is to mount the tooth on a spring arm having a loop for increasing the means whereby the double pointed tooth may be easily and quickly removed for sharpening purposes or reversed for using either sharpened end thereof.

A further object is to provide a tooth which may be easily sharpened, will not become bevelled or blunt, as is now the difliculty wlth weeder teeth as at present constructed where the body of the tooth is relatively heavy, and

one which may be formed from a relatively hard metal, and as a separate part from the arm, thereby allowing the arm to be formed from a softer and cheaper metal.

A further object is to provide the lower end of the spring arm with a sleeve having an apertured boss, through which the double ended tooth extends and a set screw carried by the boss and cooperating with the tooth for holding the same in various adjusted positions.

A further object is to provide the upper end of the spring arm with a horizontal arm extending through an aperture in the down wardly extending flange of the angle bar of the machine, and terminating in a U-shaped member engaging the under side of the horizontal flangeof the angle bar and held by a plate. bolted to the under side of the'hori- V zontal flange and having a portion arching the transverse portion of the U-shaped member. V V V A further object is to provide the portion of the plate, which arches the transverse por-' tion of the U-shaped member with an up-i In weeder teeth x the"teeth have been formed as anintegral I portion'of the tooth arm' andthe armshave movement on its single bolt.

' Afurther object is to dispose the arms of the U-shaped portion of the horizontal portion ofthe spring arm in engagement with. opposite sides of the plateffor preventing l pivotal movement in a; horizontal plane of the range of flexibility of the arm and to provide Wardly extending flange.

spring arms in the aperture of: the down- With the above and other objects in view the invention resides in the combination and 1 arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being understood that changes in Figure 2 isfa vertical transverse sectional View through the angle bar of the spring arm mounting.

Figure 3i's a Figure 4 is'a verticallongitudinal section al view through 'thetooth mounting.

Referring to the drawings, the numeral 1 designates the horizontal angle bar ofa conventional form of, weeder, 2 the horizon tal flange thereof and 3 I g the, downwardly extending flange. V

heretofore constructed,

been formed from flat material, however it has been found that the teeth soonbeeome blunt on their forward edges and will not I [penetrate hardsurfaces, such for instance as thecrust formed on clay soil. To form the teeth'from material ,which; will not easily would be necessary to form the entire tooth arm from high grade expensive steel. 7 g

the precise embodiment of the inventionmay I bottom plan view of the angle bar showing the spring arm mounting.

i V jwear would be an expensive operation, as it wardly extending flange, engaging the for ward edge of the horizontal flangeof the ana the set screw 12. It will be seen that by Ina nipulating the set screw, the tooth 11 may be adjusted upwardly or downwardly in relation to the ground or reversed, or when deslred, removed for resharpemng purposes.

, The ends of the hard steel point 11 are sharpened as shown at 13, and as the point 11 is of relatively small diameter, it is obvious the points will easily pierce the ground and when they hit an obstruction, the spring arms 4 will fieX, allowing the points to pass ,over the obstruction but to be immediately forced into the ground through the hard crusts after passing'the obstruction, which is not possible with weeder teeth as at present constructed which will not pierce the hard crust of clay soil. It will be noted by making the teeth 11 removable, when it is desired to sharpen the teeth they may be easily removed without removing the entire arm from the weeder, therefore the present device overcomes another objection to weeder teeth as at present constructed.

The forward end of the arm 5 extends through an enlarged aperture 14 in the downwardly extending flange of the angle bar 1 and terminates in a U-shaped portion 15 having its transverse portion 16 with its forward side 17 in registration with the forward edge 18 of the flange 2 of the bar, so

that the upwardly extending flange 19 of the clamping plate 20 will engage the arm 16 and the edge 18 of the bar flange for preventing movement of plate 20 on bolt 21.

It will be noted that arm 5 engages one side of the clamping plate 20 and the arm 22 of the U-shaped member engages the opposite side of the plate 20, therefore it will be seen that in combination with the single securing bolt 21, the arm 5 is rigidly anchored by a single clamping plate and bolt, thereby reducing the cost of manufacture to a minimum and simplifying the anchoring of the spring arm.

From the above it will be seen that a weeder tooth and mounting is provided, which is simple in construction, may be easily reversed or removed for resharpening or changing the point, and a weeder tooth is provided which will easily and positively puncture hard crusts formed on hard clay soil, thereby allowing cultivation of corn and other plants.

his signature.

' SAMUEL L. HALL.

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