US86768A - Improvement in rotary harrows - Google Patents

Description

sa ital tait/ra @anni (niita r Leners Patent No. 86,768, dated Febmwry 9, 1869.

IMPROVEMENT IN ROTARY HARROWS.

The schedule referred m in time Letters Patent and making pm ofthe uma.

To all whom 'it may concern:

Be it known that we, SAMUEL LUBL'r and JACOB TROUT, of Lykehs, in the county of Dauphin, and State of Pennsylvania, have invented a new and improved Rotary Harrow; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of two harrows by means of gear-wheels affixed to thel sides ofthe vertical wheel, and operating against a cog-rim at the inner or adjacent edges ofthe harrows, whereby the long shaft heretofore employed is dispensed with, and a different and better motion is im parted to the two harrows, and whereby the form and construction of the frame of the instrument, and the various details of its several parts, can he greatly sim# plified, so as materially to reduce it in size and weight.

In the drawings, A A represent the two Vrevolving harrows, attached by vertical journals, or spindles, to a cross-bar, B, which is drawn along by means of a tongue, O, the barrow being guided and controlled by means of two handles, D D.

The cross-bar B is made in two parts, separated a few inches at the centre of the machine, directly behind the tongue, the two parts being connected by an arched metallic yoke, E.

This arragementis for the purpose of accommodating a vertical spur-wheel, F, which rotates upon a short, stout shaft, havingits bearings in lugs depending irom the under surface of the `cross-bar B, directly over the inner edge of the rims of the wheels A A'.

The rims of said wheels are, on their upper side and at their outer edge, provided with a row of cogs, r r, which gear with small pinions c c, attached to the shaft of wheel F, on each side oi' the latter, and close t0 it, or attached tothe side of the wheel F itself.

Braces h h may be employed to strengthen the apparatus, and more innly connect the cross-beam and tongue.

The great advantage in this construction consists in dispensing with a long shaft, and employing the short one, which carries wheel F, for the purposes almve described. This enables the frame to be so simplified as to consistmerely of a single cross-beam, with a tongue tohaul it, and handles to guide it, and, at the same time, it dispenses with the greater part of the weight of the old` shaft.

There is another and very important advantage gained by arranging the gear-wheels e e at the inner edges of the cog-rim` lr, instead of at the outer edges, as heretofore, namely, tlvat, in the old Vinstrument, the wheel F, moving, at x, in a forward direction, caused the two harrows to move, at z a, in the opposite direction. The consequence was that, when thev latter caught a stick, stone, 85e., and movedit back, the obstructiouwas liable to meet the harrpwteeth moving forward, and to break either them or the teeth of the central wheel.

In our improved harrow, however, the teeth of wheel F, on its under side, move in the same direction as the teeth on the adjacent edges of the tvvodiai'rows, and any obstruction caught by one set of the teeth is impelled to the rear by each of the othern sets also, instead of having its progress resisted by the others.

Having thus described our invention,

What we claim as new, and desire to secure by Letters Patent, is-

l. The an'angement of the two horizontal rotary harrows A A,.veitical wheel F, and two pinions e e, close at. the sides of the wheel F, and gearing with cog-rims on the wheels A A in such a manner that, as the instrument is drawn forward, the under side of wheel F and the inner edges of wheels A A all move in one and the same direction.

2. The arrangement of the cross-beam EB, united, at the centre, by the arch E, the handles D D, the tongue C, and-the braces li h, substantially as and for the purpose above described.

Tothe above specification of our improvement, we have set our hands, this 12th day of October, 1868.

SAMUEL LUBOLT. JACOB TROUT. Witnesses:`

C. A. HARPER, H. B. GARDNER.

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