US1692113A - Draft equalizer - Google Patents

Description

Nov. 20, 1928. r 1,692,113

G. W. CULP DRAFT EQUALI Z ER Filed Afi 26, 1926 Patented Nov. 20, 1928.

UNITED STATES GEORGE VTESLEY GULF, OF MAGRATH, ALBERTA, CANADA.

DRAFT EQUALIZER.

Application filed August 26, 1926.

This invention relates to improvements in draft equalizers, and the objects of the invention are to provide means which will equalize the draft between horses hitched tandem and in which therear doubletree is free to move laterally and longitudinally.

lVith these and other objects inview, which will appear in the following complete description, the invention consists essentially in attaching a pulley behind the doubletree whereby the team next the load is closer to the load. thus allowing for a longer range and whereby there is less likelihood of a team rid of its load by lagging behind.

Referring now to the drawings, in which like characters of reference indicate corresponding parts in each figure,

Figure 1 is a plan view of'iny improved draft equalizer,

Figure 2 is a side view,

Figure 3 is a side elevation of an alternative form with double pulley,

Figure 4 is a plan view of Figure 3,

Figure 5 is a top plan view of a further modified form of the double pulley construction,

Figure 6 is a side elevation of Figure 5,

Figure 7 is a front elevation of the guide rollers shown in plan in Figure 1.

Referring now more particularly to the drawings and to the preferred form of my invention as illustrated in Figure 1, 1O designates an equalizer bar adapted to be secured to the load to be hauled. This bar 10 is designed to extend through a frame member 11 and to be bolted therein by a bolt 12. The frame 11 extends back of the equalizer 10 and has rotatably mounted therein a pulley 13, the front sides of the frame converging as at 14 to be secured by the bolt 15. This bolt is de signed to extend outwardly from the frame 11 and support the guide pulleys 15 mounted in the frame 15 The end of a chain 16 is engaged by the bolt 15 at 16 and thence travels over a pulley 17, one of a pair, and back under said pulley to pass between the guide pulleys 15 and under and over the pulley 13 to connect with a clevis 18 of a doubletree 19 on which are mounted at each end the whiflletrees 20 and 21. With this construction the two horse doubletree 19 can go clear back to Serial No. 131,754.

the back part of the pulley, making it more difficult for the rear team to shirk the load.

Furthermore by means of the chain 16 anchored to the frame 11 and travelling over the pulley 17 and back under and over the pulley 13 to ultimately engage with the clevis 18, the frame is held even and prevented from tipping sideways on'a pull being exerted, friction being thus reduced while automatically retaining the mechanism in alignment.

In Figures 3 and l a slightly modified form of construction is shown in which, in addition to the pulley 13 behind the equalizer, apair of pulleys 22 and 23 are shown in a frame in front of the equalizer, these pulleys being designed to engage with the chain 16 connected at 16 to the frame 11 and travelling thence over one of the pulleys 23 and back under the 4 said pulley and around the pulley 24, which is set at an angle of from 30 to 50 to the horizontal in the twisted portion 11 of the frame 11, thence forward over the pulley 22, and back under said pulley to the pulley 13, anc over to the clevis on the doubletree 19.

In Figures 5 and 6 a further modification is shown in which the chain passes under and over the pulley 13, and when both teams are pulling entirely on the pulley 13, behind the doubletree 10, the chain in this case passes between the pulleys 25 and 26, to hold the pulleys 17, 22 and 23 and-clevises in alignment.

From the foregoing it will be seen that the chain 16 passing down the centre and between the pulleys 13 and 15 and 17 will reduce the friction that would result as compared with that which would result if the chain were passed through an eye or support.

As many changes could be made in the above construction and many apparently widely different embodiments of my invened in said bracket behind the bar, a floating bracket member, a pulley rotatably mounted on each end thereof, the sides of the rigid bracket being tapered outwardly and bolted 5 together at their extremity, a chain anchored to the bolt securing the sides of the rigid bracket together, said chain travelling over and under one of the pulleys in the floating bracket and under and over the rear pulley in the rigid bracket behind the equalizer bar, 1 an auxiliary pulley rotatablv associated With the outward extremity of the rigid bracket.

In Witness whereof I have hereunto set my hand.

GEORGE VESLEY CULP.

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