US633610A - Cultivator. - Google Patents

Description

No. 633,6!0. Patented Sept. 26, I899. F. E. PEARSON.

BULTIVATOR.

(Application filed Aug. 7, 1899.)

tlo Model.)

ITED STATES ATENT Prion.

FRANK E. PEARSON, OF ROCKFORD, ILLINOIS.

CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 633,610, dated September 26, 1899.

Application filed August 7, 1899. Serial No.726,407. (N model.)

To all whont it ntaz concern:

Be it known that I, FRANK E. PEARSON, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Cultivators, of which the following is a specification.

The obj eet of this invention is to construct a cultivator in which a spring is employed to counterbalance the weight of the drag-bar and provisions for holding the drag-bar elevated, also for adjusting the drag-bars to vary the width between them.

In the accompanying drawings, Figure 1 is a side elevation of a cultivator embodying my improvements, the axle being in section. Fig. 2 is a vertical section on dotted line a, Fig. 1. Fig. 3 is an isometrical representation of the block employed in adjusting the dra -bars. Fig. 4 is an isometrical representation of the pivoted latch. Figs. 5 and 6 are isometrical representations of the pivoted block supported by the hand-lever.

The main frame of the cultivator consists of the axle 1, the supporting-wheels 2, and tongue 3, joined together in the usual manner. To the rear end of the tongue-frame is secured a toothed segment 4, to which is pivoted a hand-lever 5 having the usual thumblever and spring-actuated plunger arrangement for engaging the toothed segment. This hand-lever has an extension 6, its lower end being perforated. A block 7 (shown at Figs. 5 and G) has a lengthwise groove S'and a stud 9, extending at right angles therefrom. This stud is located in the opening in the extension of the hand-lever, thereby forming a pivotal connection between the parts. To the sides of the tongue-frame is secured a bracket 10, having a projection 11 extending at right angles thereto. A shelf 12 extends from the bracket, also a perforated ear 13, to which is pivoted a latch 14, when turned down rests upon the shelf, as shown at Fig. 4. Upon the projection 11 of the bracket is pivoted a bell-crank lever 15, its longer arm having a curved extension 16 in the form of a hook. A spring 17 has one end connected with the hook 16, its other end adjustably connected with a projection 18, extending from the bracket 4. A rod 19 is located in the groove 8 in the under face of the block 7, one end connected to the long arm of the bell-crank lever and the other end 20 bent in the form of a handle. The short arm of the bell-crank lever has a linked connection 21 with the drag-bar 22. From the main frame depends a hanger 23, to the lower end of which is pivotally supported a bracket, between the branches 24 of which is located the forward end of the drag-bar 22. A bolt 25 serves to connect the parts. The space between the branches 24 is greater than is necessary to receive the forward end of the drag-bar, and a block 26 (shown at Fig. 3) is supported to fill the space, the slot 27 in the block receiving the bolt 25. By means of this block the distance between the drag-bars can be varied. This is accomplished by placing the block against either side of the forward end of the drag-bar. Through the hand-lever 5, rod 19, bell-crank lever 15, and linked connection 21 a connection is formed between the hand-lever and drag-bar and by means of which the working depth of the shovels can be regulated, raised, and lowered. When the pivoted latch 14 is in the position shown in the drawings, the hook 16 of the bell-crank lever will strike the latch when the drag-bar is elevated and prevent the linked connection 21 passing over the pivotal center of the bellcrank lever; but if the latch be thrown over and the drag-bar raised the hook will rest upon the arm 12 and carry the linked connection past the pivotal center of the bellcrank lever, thereby holding the drag-bar locked in its elevated position. This lock can be broken by pushing on the rod 19, which will move the bell-crank lever sufficiently to allow the drag-bar to fall. By the employment of the bell-crank lever as the spring loses force it gains leverage, so that the same tension is exerted upon the dragbar at all times.

I claim as my invention 1. In a cultivator, the combination of a main frame, a bell-crank lever having a pivotal connection with the frame, a connection between one arm of the bell-crank lever and drag-bar, a spring connecting the other arm of the bell-crank lever and main frame, a lifting-lever and a connection between the bellerank lever and lifting-lever.

2. In a cultivator, the combination of a main frame, a bell-crank lever having a pivotal connection with the frame, a connection between one arm of the bell-crank lever and drag-bar, a spring connecting the other arm of the bell-crank lever and main frame, a lifting-lever and a rod connected with the bellcrank leverhaving a movable connection with the hand-lever.

3. In a cultivator, the combination of a main frame, a toothed segment, a hand-lever engaging the toothed segment, a drag-bar, a block pivotally supported by the hand-lever, a bell-crank lever, one arm connected with the drag-bar and a rod connected with the bell-crank lever and having a sliding engagement with the pivoted block.

4. In a cultivator, the combination of a main frame, a bell-crank lever having a pivotal connection with the frame, a toothed segment,-a hand-lever, connections between the bell-crank lever, drag-bar and hand-lever, and a movable stop limiting the movement of the bell-crank lever.

5. In a cultivator, the combination of a main frame, a drag-bar having a pivotal connection with the main frame, and a removable block located at the pivotal connection between the drag-bar and main frame.

FRANK E. PEARSON. lVitnesses:

M. J. YORK, A. O. BEHEL.

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