US846280A - Draft-equalizer. - Google Patents

Description

PATENTED MAR. 5, 1907;

V B. A; BARRY. DRAFT BQUALIZER. AEPLIOATION rum) me.29,19os.

THE NORRIS PETERS c UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed August 29, 1906. Serial No. 332.493.

To all whom, it may concern.-

Be it known that I, EDWIN A. BARRY, a citizen of the United States, residing at Sutherland, in the county of OBrien and State of Iowa, have invented new and useful Improvements in Draft-Equalizers, of which the following is a specification.

his invention relates to draft-equalizers which are intended and adapted especially to be used upon agricultural implements of various kinds, the object of the invention being to provide a simple and inexpensive device of this character, whereby the draft will be efiectively equalized between the animals on opposite sides of the tongue or pole.

Further objects of the invention are to simplify and improve the general construction and operation of the parts constituting the invention.

With these and other ends in view, which will readily appear as the nature of the in vention is better understood, the same consists in the improved construction and novel arrangement and combination ofparts, which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations, and modifications within the scope of the invention may be resorted to when desired.

In the drawings, Figure 1 is .a top plan view of a vehicle-tongue equipped with draftequalizing mechanism constructed in accordance with the principles of the invention. Fig. 2 is a bottom plan view of the same. Fig. 3 is a sectional view taken on the plane indicated by the line 3 3 in Fig. 1.

Corresponding parts in the several figures are denoted by like characters of reference.

1 designates a vehicle tongue or pole, upon which a cross-bar 2 is secured by means'of a keeper, clip, or staple, as 3, the cross-bar 2 consisting of a flat metal bar set on edge and bent at its ends to form rearward-extending arms 4 4. Said arms are connected with the tongue by forwardly-extending obliquelydisposed bars or braces 5 5, the rear ends of which are secured upon the arms 4 by means of rivets 6 or other suitable fastening device, the front ends of the braces 5 being connected with the tongue by means of a transverse pin or bolt 7. The braces 5 are connected with the tongue 1 by means of divergent braces 8, the front ends of which are secured upon the braces 5 intermediate the ends of the latter, while the rear ends of the braces 8 are connected with the pole or tongue by a transverse pin or bolt 9. The cross-bar 2, together with the braces 5 5 and 8 8, constitutes a frame to which the draft is applied, as will be now more fully described.

The doubletree or equalizer D is composed of two separate parts or members 10 10, formed of strap-metal, each of said members constituting a yoke, having an upper arm 11 and a lower arm 12, said arms being disposed 7 in an approximately vertical plane one above the other. The yokes or members 10 10 are pivoted upon the tongue by means of the hammer-bolt 13, the arms 11 overlapping one another above the tongue and the arms 12 of the two members being overlapped below the tongue. Upon each of the arms 11, near the. end thereof, is secured an angular or L-shaped plate or clip 14, which engages the rear edge of the corresponding arm of the other yoke or member, thereby preventing the said members from bending or flexing in a rearward direction. Each of the yokes or members 10 is provided near its end with a vertical pin 15, upon which is ournaled a pul- 8 ley 16, said pulleys being disposed between the arms 11 12 of each yoke. The pin 15 also serves for the attachment of links or straps 17, carrying the swingletree 18.

Flexible elements, such as chains 19, are 9 guided over the pulleys 16. The rear ends of said flexible elements are connected, by means of clevises 20, with the cross-bar 2 of the draft-frame. The forward ends of the flexible elements 19 are connected by means 5 of a rod 21, which extends across the tongue in front of and adjacent to the doubletree. Stop members 22 are secured adjustably upon the flexible elements in rear of the doubletree, as shown. 1 In practice the pulleys 16 will travel freely upon the flexible elements 19, thus permitting the doubletree or equalizer to swing freely upon the hammer-bolt constituting its pivot, it being evident that the parts or mem- I here 10 10 of the doubletree or equalizer are free to flex in a forward direction, so as to take up any slack that may possibly exist in the chains or flexible elements, with the obvious result that an undue strain exerted by I carried by said yokes,

one of the draft-animals will be transmitted through the draft elements to the other end of the equalizer. The stops 22 will serve to limit the rearward movement of the free ends of the member of the doubletrec or equalizer, and the clips or angular plates 14 will prevent the free ends of the members of the equalizer from flexing in a rearward direction.

Having thus described the invention, what is claimed is- 1. In a device of the class described a tongue or pole having a cross-bar, braces connecting said cross-bar with the tongue to constitute a draft-frame, a doubletree pivoted upon the frame and having guide members at the ends thereof, flexible elements guided over said members and connected at their rear ends with the cross-bar of the draftframe, and a rod connecting the forward ends of the flexible elements and extending across the tongue adjacent to and in front of the doubletree.

2. In a device of the class described a tongue having a cross-bar, braces connecting the ends of said cross-bar with the tongue, a doubletree composed of two yokes or members pivoted upon the tongue, guide-pulleys flexible elements guided over said pulleys and connected at their rear ends with the cross-bar, and a rod connecting the front ends oi said flexible elements and extending across the tongue in front of and adjacent to the doubletree.

3. In a device of the class described a tongue having a crossbar, a doubletree comprising two independent yokes or members pivoted upon the tongue and having overlapping arms each provided with a clip engaging the rear edge of the other, guide-pulleys carried by the yokes, and flexible elements connected at their iront ends adjacent to and in front of the doubletree and having their rear ends connected with. the cross-bar.

4. In a device of the class described a tongue having a crossbar, a doubletree comprising two independent yokes or members pivoted upon the tongue, guide-pulleys carried by said yokes or members, flexible elements guided over said pulleys and having their front ends connected in front of and adjacent to the doubletree, said flexible elements being connected at their rear ends with the crossbar, a stop member secured upon said flexible elements in rear of the ends of the yokes or members of the doubletree to limit the rearward movement of the latter.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWIN A. BARRY.

Witnesses:

- C. A. WAT'rs,

0.1 JORDAN.

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