US1953208A

US1953208A - Automatic harrow elevator

Info

Publication number: US1953208A
Application number: US658997A
Authority: US
Inventors: Franklin C Atkinson
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-02-28
Filing date: 1933-02-28
Publication date: 1934-04-03
Anticipated expiration: 1951-04-03

Description

April 3, 1934. E Q ATKINSQN 1,953,208

AUTOMATIC HARROW ELEVATOR Filed Feb. 28, 1935 llllllllllmii."lllllllllllllllllll lIlllIllllmflfi'lllllllflllllllllllIllIF INVENTOR A TTORNEY Patented Apr. 3, 1934 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to automatic harrow elevators, and more particularly to harrows or similar devices adapted to level rough ground and break earth clods, and the like.

One of the disadvantages in using the present harrow, especially on farms, is the clogging of the teeth by weeds, grass and similar objects. If the harrow is drawn upon the rough ground the teeth engage the earth and earth clods, and after a time they become clogged with weeds and the like.

One of the objects of this invention is the provision of a harrow having an automatic elevator thereon.

Another object of this invention is the provision of a harrow consisting of an automatic elevator for raising the harrow and teeth at an angle from the earth so as to permit the weeds engaged with said teeth to be released therefrom.

A further object of this invention is the provision of a harrow having auxiliary wheels for permitting the harrow teeth to be free from a road surface and thereby prevent the mutilation thereof.

Other objects and features will more fully appear from the following description and accompanying drawing in which Fig. 1 is a side view of a harrow provided with an elevational means, and Fig. 2 a top plan view of the harrow. Fig. 3

, shows diagrammatically two steps in the operation of the device.

Referring to the drawing, a harrow 1 is provided with a body 2 having teeth 3 in spaced relation to each other and secured into said body in any suitable manner. A pair of bearings 4 are secured, respectively, to either side of said body and are adapted to accommodate an axle 5, the ends of which are, respectively, provided with arms 6 terminating in points 7 and having semicircumferential members 8 extending therefrom. Wheels 9 are secured to, and rotatable in, bearings 9 on said members 8.

A portion of the body is provided with arms 10 projecting therefrom. A catch 11 extends from the axle and is adapted to rest upon a latch 12 disposed in

guide bearings

13 and 14 secured to said body. Fixed to the top of bearing 13 is a post 15 adapted to serve as an anchor for a spring 16, one end of which is secured thereto; the other end being secured to a handle 17 which is a part i of, and extends from, latch 12. An eye-bolt 18 is secured in the top of said handle 17 and adapted to accommodate a rope 18' or the like. Links 19 are respectively connected in pivotal fashion to each side of said body and have at the free end thereof Wheels 20. Stops 21 are located in close proximity to said links to prevent movement in one direction. Latching means 21 hold said Wheels in inoperative position. A coupler 22 is secured to the end of the body portion and adapted to receive any means for dragging said harrow.

The axle is also provided with a stop 23 adapted to engage a latch 24 disposed in a bearing 25 secured to one of the arms 10.

It is obvious from the foregoing that when the coupler is connected to drawing means and the latter is actuated, the harrow will move forward over the rough ground. The rope 18 extends to the drawing means (not shown) and when the harrow teeth are desired to be elevated from the ground so as to permit expulsion of the weeds and the like, that are clogged and engaged with said teeth, force is exerted on the rope which causes the latch to release the catch and due to gravity the semi-circumferential member 8 will fall in the direction of arrow 26 (due gravitation being exerted on arm 6 and points 7) and upon said member so falling, points 7 will engage the earth and the harrow will be gradually elevated due to the arm 6 causing the axis of said shaft to pivot about the center of points '7.

Member 8 will roll its entire length, over the ground, and spring 16, immediately when the rope is released, will cause the latch to resume its normal position. When the free end of member 8 contacts the ground arm 6 is off perpendicular center in the direction of travel of the harrow and gravitation will cause said member 8 to drop in direction of arrow, and latch 12 being repositioned (after being pulled out of the path of travel of catch 11) the latter will engage former and thus retard movement thereof.

If it is desired to convey :the harrow over a hard surface road or the like latch 24 may be positioned in the path of catch 23 thereby causing wheels 9 to remain in fixed position so as to serve for wheeling purposes. Wheels .19 may be released thereby completely elevating the teeth so as to prevent engagement thereof with the earth. Links 19 engage stops 21 in an angular manner so that when the harrow is drawn along the road a force will be exerted against said stops that tends to maintain such position of the links.

It is also obvious from the foregoing that the invention may be located on any part of the harrow body and be operated in a similar manner. As shown in the drawing, when the harrow is elevated a substantial portion of the teeth will be free from the earth while the anterior teeth will tilt at an angle thereby causing the grass to be removed therefrom, upon movement 1-10 of the harrow, since an angular tilt decreases friction between said Weeds and. the earth. Weeds and dirt engaging the teeth that are free from the ground (when harrovv is elevated) will fall therefrom (due to gravitation) and also such fall will be facilitated by earthclods (possibly) engaging said free teeth.

It is expressly understood that this invention may also be used for leveling purposes in other lines of endeavor as Well as farm work; such for instance, in road construction work, and the like.

Having described this invention, what is claimed is:

In a device of the character described consisting of a body portion having members projecting therefrom; a shaft disposed in bearings and provided with arms extending therefrom; semicircumferential members engaging said arms; a catch on said shaft; a latch adapted to engage said catch so as to prevent movement of said semi-circumferential members in one direction; a stop secured to said shaft; a second latch disposed on said body and adapted to be actuated in the path of said stop so as to prevent movement of said shaft in one direction; a spring engaging said first mentioned latch so as to cause the latter to obstruct the path of said catch; wheels respectively on said semi-circumferential members, and Wheels respectively secured to said body portion in pivotal fashion.

FRANKLIN C. ATKINSON.