US1950834A - Harrow tooth - Google Patents

Description

March 13, 1934. c wyss 1,950,834

HARROW TOOTH Filed March 27, 1933 f1 llorney Patented Mar. 13, 1934 STATES PATENT OFFICE 1 Claim.

The present invention relates to a harrow tooth and has for its prime object to provide a tooth of this nature which will efficiently pulverize soil in which it works, break up crust, kill weeds and perform other similar functions in an efiicient and reliable manner.

Another important object of the invention resides in the provision of a spring harrow tooth of this nature which is exceedingly simple in its construction, inexpensive to manufacture, easy to mount and dismount, strong and durable, and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention consists in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure l is a front elevation of a tooth einbodying the features of my invention showing the same mounted on a bar.

Figure 2 is a side elevation thereof showing the bar in section.

Figure 3 is a sectional view therethrough taken substantially on the line 3-3 of Figure 1.

Figure 4 is a similar view showing the tooth swung to an up out of the way position.

Figure 5 is a perspective View of the tooth.

Figure 6 is a perspective view of the bolt, and

Figure '7 is a fragmentary perspective view showing a portion of a bar.

Referring to the drawing in detail it will be seen that numeral 5 denotes a channel bar of a narrow with the flanges disposed in substantially horizontal plane while the bight portion is in a vertical plane. The juncture of the upper flange with the bight portion is provided with a plurality of openings 6.

I shall describe out a single tooth as this will suiiice for all. The tooth is denoted generally by the letter T and is preferably constructed of spring steel wire. Numerals 7 denote two ooaxially arranged coils connected together at adjacent ends by a bight 8, it being noted that the coils are oppositely wound. The other ends of the coils terminate in elongated shanks 9 disposed in substantially the same plane but diverg ing downwardly from each other. The coils 7 are disposed circumjacent the bar 5. A bolt 10 is extended through the opening 6 with its head 11 projecting upwardly to function as a stop with which the bight 8 engages. However it will be seen that from the position shown in Figures 2 and 3 the tooth may be swung to the position shown in Figure 4 at which time the bight engages the other end of the bolt. The bolt is held in place by a nut 12.

It is thought that the construction, operation, utility and advantages of this invention will now be quite apparent to those skilled in this art without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

In combination, a channel bar provided at the junction of the web and one side flange of the bar with an aperture, a bolt extending through said aperture and having one end bearing against the free edge of the other side flange of said bar, and a harrow. tooth comprising a pair of tines, each tine formed with a coil through which said bar extends, and a bight connecting adjacent ends of the coils and engageable with either end of said bolt whereby the tooth may be adjusted in a rotary direction relative to said bar.

CHRIS WYSS.

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