US589037A - Charles s - Google Patents

Description

(No Model.)

C. S. SHARP. HARROW.

No. 589,037. Patented Aug. 31, 1897.v

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' bodying this invention; Fig. 2, a side eleva- UNITED STATES f PATENT EErCE.

cnARLEs s. sHARP, or AUBURN, NEw YORK, AssrcNoR To TnE D. M. osBoRNE a COMPANY, or SAME PLACE.

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SPECIFIATION forming part of Letters lJPatent No. 589,037, dated August 31 Application filet". January 5 18794:.

Serial No. l1=95,826. (No model.)

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Be it known that I, CHARLES S. SHARP, of Auburn,county of Cayugatate of New York, have invented an Improvement in Harrows, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings Yrepresenting like parts."

This invention has for its object to improve the construction of harrows; .and it consists in details of construction to he'hereinafterpointed out and claimed.

Figure l shows in plan view a harrow emtion of the harrow shown in Fig. l; Fig. 3.a. detail to be referred to.

The side bars a l?, arranged in parallelism, have secured to them at suitable points depending hangers a' b', recessed at their lower ends or otherwise constructed and arranged to afford bearings for the shafts c. There are herein represented three suchV shafts, and for lightness and other reasons they are made cylindrical and hollow. The hangers each have an annular flange l?? upon the inner sidesurrounding a circular hole made in said hanger,

although said flanges are somewhat larger in diameter thanV said holes and receive within them the ends of the shafts c. A headed stud or pin b3 is driven through the hole in each hanger andpinto the bore of the shaft, and a split pin b4 or equivalent passes through the shaft and shank of the stud at the inner side of the hanger, so that by means of said headed stud b3 and pint4 the end of each shaft cY is y securely connected'with, but free to rotate in',

the hanger, or any other means may be employed for accomplishingthis result.. Then constructed ingthis manner, it Vwill be seen that said'shafts c likewiseserveias connections between the side bars a b, and unless deemed desirable no other connection is absolutely necessary.

To the shafts c any usual or suitable form of spring-teeth are secured, as shown at c.

To two of the shafts c an upwardly-extended arm c2 is secured, they being connected together by a connecting rod or bar c3, arranged in parallelism with the side bars a D, and extending rearwardly over' the next tooth-carrying bar, and bearing at 1said rear end a of the quadrant c5. VBy means of this set-ley '.ver the shafts c maybe rocked in unison to raise and lower the points ofthe teeth c and thereby vary the depth that they shall enter the soil, as well as the angle of said teeth.

By providing depending hangers for the tooth-carrying rock-shafts the s ide bars a I) may be supportedV in aA sufficiently-elevated position to enableany clods or rubbish to pass freely beneath them.

At the front ends of the side bars a b one or more shoes d are secured, two being herein represented attached to a cross-bar e, which is connected with the front ends of the side bars a b, and said shoes are mader of fiat pieces of metal curved rearwardly, yet so far asmy inventi'onis' concerned they may be Vconstructe'diand supported in any suitable way. Y

When the set-lever is adjusted so that the points of the harrow-teeth c are in their elevated positions, (see dotted lines, Fig. 2,) the forward end of the hai-row is supported solely bysaid shoes CZ.

At the rear end of the harrow shoes are also provided which support said rear end when the harrow-teeth c are out of use, and, as hereinv shown, said shoes or supports are formed as spike barrow-teeth f, attached to an adjustable rod or shaft,whereby their relative angle to the harroW-fra'me maybe varied,

but normall 'reclininfr rearward] f. These Y sV Y l spike-teeth fserve two important functions- Viz., to act as rear shoes 'for the harrow and also to act as trailingpteeth back of the springteeth c to additionally break up the ksoil and level it.` As herein shown, these spike-teeth f pass through holes in .therodor shaft f', which is herein made L shape in cross-section, and clips f2 are bolted to 'said rod or shaft, having recesses which embrace the sh'anks of said teeth andv thereby secu relyl1ol`d them in place, yet permitting longitudinal adj ustment thereof. The rod or shaft f', which may, if desired, be differently constructed and yet Sov IOO

adj ustably hold said spike-teeth so as to permit longitudinal adjustment thereof, has journals f3 at the ends, which are supported in depending hangers f4, made similar to the hangers b', and an arm f5 is secured to and projects upwardly from said rod or shaft, the upper end of which is connected by bar f with an arm f7, loosely mounted upon the rear tooth-carrying rock-shaft c. One of the partsas f5, for instance-is provided with a series of holes 2, any one of which may receive an adjusting or clamping screw or bolt 3 ou the part f to thereby adjust the position of the rod or shaft j" so as to vary the angle of the spike or trailing teeth, thereby raising or lowering the points thereof.

Any desired number of spike or trailing teeth may be arranged upon the bar j" and disposed thereon as deemed best.

The front end of the harrowl`rame, which frame maybe composed of the side bars a b, with or without the front connecting-bar e, is provided with any suitable draft connection.

As herein represented two sections similarly constructed are shown independent of each other, but they maybe pivotally connected together, as is common in harrows of this character. Furthermore, I desire it to be understood that ou the front rod or shaft in place of the shoes d, herein shown, I may provide a series of spike-teeth reclining rearwardly, like the teeth f, and in such event they will possess all the functions of the shoes d,with the additional function which is inherent thereto, although they will not act as trailing or le\\*eling teeth, as do the teeth f, because of their location with reference tothe spring-teeth.

The shoes d and f,which serve as supporting devices for the front and rear ends of-the harrow when the teeth are elevated,also serve as supports for the harrow-frame when the teeth are in use to elevate it above the ground, preventing the collection of rubbish ahead 0f the tooth-bearing shafts, and said shoes also serve as gages by means of which the distance that the teeth shall penetrate the soil i may be determined.

I claim-- l. In a harrow, the combination of a frame, shoes at the front end thereof, and a set of rearwardly-deelining spike-teeth at the rear end thereof which terminate substantially in a plane with said shoes, and a set of spring harrow-teeth supported by said frame, and means for adj listing said spring harrow-teeth whereby their ends terminate in aplane with said shoes and spike-teeth, or above or below said plane, substantially as described.

2. In a harrow, the combination of a frame, shoes at the front end thereof, and a set of rearwardly-declining spike-teeth at the rear end thereof which terminate substantially in a plane with said shoes, a shaft from which said spike-teeth rearwardly project, and an adjusting device for adjusting said shaft on its axis, and a set of spring barrow-teeth supported by said frame, and means for adjusting said spring harrow-teeth independently of the supporting spike-teeth whereby their ends terminate in a plane with said shoes an d spike-teeth, or above or below said plane, substantially as described.

In a harrow, the combination of a frame, shoes at the front end thereof, spring harrowteeth secured to rock-shafts supported by said frame. means for rocking said shafts to raise and lower said teeth, and for holding them in their diiferent adj usted positions, the shaft f loosely supported by and at the rear end of said frame, spike-teeth secured to and projecting rearwardly from said shaft, and means for holding said shaft f aud adjusting it on its axis consisting of the arm f' projecting from the shaft, arm f7 loosely supported on the rear rock-shaft and connecting-rod f, one of said members being provided with aseries of holes andthe bolt 3, su bstantiallyas described.

In testimony whereof l have signed my name to this specification in the presence of two subscribin g witnesses.

CHARLES S. SHARP.

Witnesses:

WALTER Il. BECK, M. J. Lownn.

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