US1265979A - Harrow. - Google Patents

Description

mu. WAKEFIELD HARROW,

APPLICATION FILED DEC-27, I911.

1,265,979. Patented Mayl l, 1918.

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HARRY URBAN WAKEFIELD, 0F DARKS MILL, TENNESSEE. I

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Specification of Letters Patent. Patented May 14, 1918.

Application filed December 27, 1917. Serial No 209,061.

To all whom it may concern: Be it known that I, HARRY U. WVAKE- FIELD, a citizen of the United States, residing at Darks Mill, in the county of Maury and State of Tennessee, have invented a new and useful Harrow, of which the following is a specification.

The subject of this invention is a harrow, and the invention relates more particularly to that class of harrow in which a plurality of bars provided with downwardly projecting teeth are connected by links so that the bars and their teeth may be set at various angles of inclination.

The main object contemplated by the invention is the provision of means for tilting the bars so that the teeth may be inclined to discharge trash which may have accumulated thereon.

The invention further contemplates -the provision of a riding platform for the harrow. Y

A further object in contemplation of the invention is the provision of a simple, du-

rable, and eflicient harrow.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is shown in the accompanying drawing, wherein Figure l is a plan View of a harrow constructed in accordance with the invention;

Fig. 2 is a central longitudinal section;

Fig.3 is a detail view in side elevation of the lever arm and its connecting rod;

Fig. 4 is a fragmentary detail in plan view of the foremost harrow bar and the element for connecting the lever arm thereto;

Fig. 5 is a view in side elevation of the sliding block;

Fig. 6 is a rear elevation of the same, the lever arm and connecting rod being shown in section.

Referring to the drawing by numerals of reference In carrying out the invention there is provided a plurality of bars 1 ineach of which are secured, in the usual and ordinary manner, the spaced, downwardly pro- 7 jecting teeth 2. Eye-bolts 3 are secured in transverse apertures formed in the bars 1 and forma connecting means for the ends of links 4:, the ends of which are looped or bent through the eyesof the bolts. Olevises 5 are pivotally engaged to the foremost bar 1 and serve as a connecting means for the chain 6 which constitutes the draft rigging for the harrow.

Other eye-bolts 7-7 are secured to the foremost bar 1 from which they extend forwardly and are spaced to each side of the longitudinal center of the bar. 'An aperturcd block 8 has its trunnions 8 rocking in the eyes of the eye-bolts 7 and through the aperture of this block passes the downwardly bent end 9 of the lever arm 1O, a split pin or key 11 being used to secure the end 9 within the aperture of the block 8.

A connecting rod 12 has its forward end pivotally connected to the lever arm 10, at substantially the center of said arm, and its rear end has a sliding fit in the longitudinal channel of a block 13. The block 13 has a transversely arranged inclined groove in which is secured by rivets or otherwise a'bar 14: which terminates in a hooked end 15. A pin 16 is adapted to enter an aperture 17 formed near the rear end of the block 13 and any one of a series of apertures 18 formed in the connecting rod 12 for the purpose of securing the rod in an adjusted position to the block 13. As will be seen most clearly in Fig. 6, the longitudinal channel of the block 13 is of suflicient depth to allow the rod 12 to pass between the bottom of the channel and the bar 14:.

The hook 15 is adapted to take into the eye of an eye-bolt 19 which is secured in the rearmost bar 1 at the longitudinal center of said bar. The end of the lever arm 10 may be thrown into the channel of the block 13, without the bar 14:,when the lever arm is in horizontal position to hold the harrow in extended, operative position.

A riding platform is provided which consists of boards. 20 arranged longitudinally of the harrow and connected by underlying cleats 21, to which the boards are secured by nailing or otherwise. An open space extends longitudinally of the center of the platform, and the forward end of this space is bridged by the spaced rods 22 which are adapted to lie, the one in front and the other behind the downwardly bent end of the lever arm 10.

In practice, the block 13 is adjusted to the desired position on the rod 12 and the pin 16 inserted in the alining apertures 17 and 18. T he heel: 15 is then engaged in the eye of the eye-bolt 19 and the lever arm 10 thrown down to horizontal position and its free end engaged in the channel of the block 13. This extends the harrow to operative position.

Should the teeth of the harrow become clogged with grass, weeds, or other trash, the lerer arm 10 is disengaged from the channel of the block 13 and throvn to the position shown in Fig. 3, thereby tilting the bars 1 and inclining the teeth 2 rearwardly to a sufticient extent to allow the trash to slip therefrom as the harrow is drawn forwardly.

The platter) may be utilized for the operator to ride on, or wei hts may be placed thereon when desired or necessary.

By this arrangement of the lever and connee-ring rod it is possible to stretch or eX- tend the harrow with great ease and without the necessity of lifting the rear end of the harrow, as is now necessary with most harrows of tiis character.

Having thus described the invention, what is claimed as new and sought by Letters Patent, is:-

1. A harrow including a plurality of toothed bars linked together, a lever arm having a downwardly bent end connected to the foremost bar, a connecting rod pivot-ally secured to the lever arm,.a block having a longitudinal channel slidable on the connecting rod means for securing the block in adjusted position on the rod, a bar depending fronr the block, a hook at the end of the bar, and a looped member secured to the rearmost toothed bar and engageable by the hook.

2. A harrow including a plurality of tootned bars linked together a lever arm having a downwardly bent end connected to the foremost bar a connecting 'rod piv0t ally secured to the lever arm, a block slidable on the connecting rod, means for securing the block to the rod, means for pivotally connecting the block to the rcarmost toothedbar, and means for detachably securing the lever arm to the block.

In testimony that I claim the foregoing as my own, I have hereto atlixed my signature in the presence of two witnesses.

HARRY URBAN WAKEFIELD. lVitnesses W. B. GnEENLAw, H. H. Hrsn.

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

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