US238458A - Harrow - Google Patents

Description

(No Model.)

0. TOLLE. Harrow.

No. 238,458. Patented Marchi, issu...

N, PETERS, PHOTO-LITHOGRAPMER, WASMINGI'ONJL)` C'.

@UNITED STATES PATENT Ormea,

CHARLES TOLLE, OF GODFREY, ILLINOIS.

HARROW.

SPECIFICATION forming part of Letters Patent No. 238,458, dated March 1, 1881.

Application tiled August 13, 1880. (No model.)

To all whom lit may concern g Be it known that I, CHARLES TOLLE, of Godfrey, Madison county, and State of Illinois, have invented a new and useful Harrow, of which the following is a specitication.

This invention relates to that class of harrows which is represented by the patent of Charles rlolle and Christian Wirth, No. 198,710, December 25, 1877 and it consists ina certain novel combination of parts by means of which the construction is simplified and the.

capacity of the barrow for adjustment is increased, as will be fully described hereinafter.

Figure 1 is a top plan, showing duplicate sections of the harrow coupled together and ready for use. Fig. 2 is an enlarged side elevation of the lever attachment which I have provided at the top of the frame of the harrow to operate the trip levers or pawls, said parts shown being the turn-bars with catches, the lower parallel bars carrying the hand-lever and its connections to the top or lock bar, and the pawls pivoted to both tle lock-bar and bottom parallel bars, the dotted lines showing adjustability of the said parallel bars and their mounted parts. Fig. 3 is a top or plan view of Fig. 2; and Fig. 4 is lan enlarged detail, showing a pawl in engagement with its catch of a turn-bar securing its teeth in vertical condition. The dotted lines show adjustability of the same part-s.

Similar letters refer to similar parts throughout the several views.

As shown in Fig. 1, my harrowis composed of two parts or sections, each of which is a duplicate, complete in itself, can be used separately, or, when coupled together, used jointly.

A A A A represent the parts composing the main frame, and which is preferably of the shape shown in Fig. 1.

B B B represent the turn or toothed bars 5 b b b, Src., the series of teeth. These are passed through the turn-bars to project above and below, and are rigidly secured to the turn-bars. b b', &c., are a fewer number of similarly-ar ranged teeth, but secured at right angle to the remaining series. As soon as the lower portion of the teeth come out of the ground the upper end of the teeth catch into the ground, and this revolving action is achieved by the teeth b4, which, with the series of teeth b b, Ste., make the barrow rotary, if such action is desired.

I employ two parallel or adjusting bars, O C, in combination with the hand-lever and its arm d, connected to the top or lock bar, E, which carries the pivoted trip levers or pawls F, so that all'said justnamed parts are capable of an adjusting action either to the right or lett in a horizontal direction on top of the frame.

1t can be here stated that the handle and its connections to the lock-bar and pawls are shown in the patent above alluded to, and in the present case said parts are simply used to lift the pawls into or out of engagement with the catches on the toothed turn-bars.

To adj ustably secure the barrow-teeth in any position-that is to say, cause the teeth to back wardl y incline, be vertical, or incline forward, or occupy any intermediate position between those just named-I first partially turn the toothed bars B B to the desired point; secondly, I adjust the parallel bars C (carrying all the hand-lever attachment on top of the frame) to the same desired point, permitting the engagement of the pawls with the catches of the toothed bars, so that the latter cannot turn, and consequently its teeth will be made to occupy the position'desired. Each turn-bar (in line where the pivoted pawls are arranged) carries stops or catches b2. (See Figs. 2 and 4.) Each turn-bar B has its ends journaled in the parts of the frame A A, (see Fig. 1,) and hence can be turned round to give the barrow-teeth position at any point.

The parallel bars O C, as shown in the iigures, are arranged in the line of the catches of the turn-bars, and simply rest on top of the frame parts A A, so as to be capable of being moved back and forth, as indicated in Fig. 2. The said parallel bar C O can be made of a single bar of metal of sufficient length to be bent at the middle, (see Fig. 3 at the point marked X,) and the sides of said bar brought only so close together as to leave space sufficient for the operation of the pawls F, which are located between said parallel bars. (See Figs. 1, 2, 3.)

c c are screws that pass up through the frame IOO parts A A at both ends, or the front and rear parts, of the harrow. Said screws pass between the parallel bars C C.

vc' c are washers placed on the screws, and c2 c2 are tail-nuts to secure the said washers tightly against the ends of the adjusting-bars U C, and thus the latter, when properly adj usted, are secured immovably. By loosening only the tail-nuts the parallel bars are adjustable. I lay stress upon this manner ot' employing adjustable bars C C, as these carry the lever attachment that operates the pawls, and all said parts are adjustable together at one and the same time, as indicated by the dotted lines in Figs. 2 and 4.

The pawls F are preferably of the constructive shape shown in Figs. 2, 3. Said pawls are respectively pivoted to the lock-bar at f and parallel bars below at f', as shown, so that by moving the lock-bar the point f2 of each pawl can be made to engage or disengage from the catch b2.

Gr is the hand-lever. It is fulcrumed at gto the parallel bars, and the arm d is pivoted at g to the hand-lever.

The operation of the barrow is as follows: When used as a rotary harrow the pawls F are kept out of engagement with the catches on the turn-bars and the latter permitted simply to revolve. As before stated, the operator can adjust and secure the teeth in three dierent positions--viz., to baekwardly incline, be vertical, or incline forward, the said positions being indicated by the dotted lines in Fig. 4. To barrow deep, reach and break as well as level the lumps and heavier clods, the teeth are set to incline forward. To perform the work of an ordinary harrow, the teeth are set and held in a vertical position. For covering the seed, especially cultivating corn, clover-seed, 85e., place the teeth at an inclination backward. All the parts-viz., the parallel bars C C, carrying the hand-lever connected to lock-bar and pawls-can be adjusted to hold the turn-bars from turning, so that the teeth will be positioned at any intermediate point between the various changes above stated. To make, therefore, all the said various changes after the turn-bars with their teeth have been adjusted as desired, the parallel bars with mounted hand-lever attachment are likewise adjusted to the point to permit the pawls to engage the catches. The operator needs simply to unscrew each tail-nut, loosening the hold of the Washers, in order to slide or adjust the parallel bars and theirl parts and bring same in line with thepreviously-adj usted positionsofthecatches. Thus the teeth can be set and held in many more different positions, adapting my barrow the better to suit the nature of the work required.

ln combination with the main frame having the turn-bars B B, with the catches b2, the adjustable bars C C, and the bars E G, carrying the pawls F F, the construction being` such that the turn-bars may be heldin any desired position or be permitted to rotate, substantially as described.

CHARLES TOLLE.

Witnesses:

WILLIAM H. MARTIN, JArRUs B. TURNER.

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