USRE12949E - Dbaft-eqtjalizeb - Google Patents

Description

H. o. SCOTT. DRAFT EQUALIZER.- APPLIOATIOH FILED JUN}} 18,190B.

I Ressued Apr. 27, 1909.

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APILIOATIONTILED- JUNE 18, 1908. Reissued Apr; 27, 1909. 1 12,949; 2 SHEETS-SHEET 2.

ATTORNEYS W/ TNE SSE S another.

UNiTED sTATEs PATENT OFFICE.

HERMON C. SCOTT, OF RITZVILLE, WASHINGTON, ASSIGNOR TO HARRINGTON HITCI-I COMPANY, OF HARRINGTON, WASHINGTON.

DRAFT-EQUALI ZER.

To all whom it may concern:

Be it known that I, HERMON C. SCOTT, a citizen of the United States, and a resident of Ritzville, in the county of Adams and State of Washington, have invented a new and Improved Draft-Equalizer, of which the following is a full, clear, and exact description.

The invention relates to draft-equalizers designed for e ualizing the draft of large teams employe for hauling heavy, Wheeled machines, such as harvesters, vgang-plovvs, and the like.

The object of the invention is to provide a new and improved draft-equalizer arranged to distribute the load to be hauled equally to the animals in the team, to reduce the friction of the Working parts to a minimum, and to provide a comparatively short but very strong and durable equalizer not liable to get out of order nor cause entanglement of the animals When in use.

The invention consists of'novel features and parts and combinationsof the same, which Will be more particularly described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented rin the accompanying drawings, forming a )art of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view ofthe improvement as arranged for a tWenty-seven-horse team. Fig. 2 is an enlarged. plan view of the rearmost draft-bar and its equalizing-bars, parts being in section. Fig. 3 is an edge view of the same. Fig. 4 is a transverse section of the same on the line 4-4 of Fig. 3, and Fig. 5 is a similar View of the same on the line 5-5 of Fig. 8.

The draft-bars or doubletrees A, A', A3, A3, and A4 (shown in Fig. '1) are arranged one in front of the other, the rearmost draftbar A being connected in the usual manner With the running-gear of the machine or other device to be hauled from one place to On the outer ends of the draftbars are mounted to swing horizontally pairs of e ualizing-bars B B, B B', B2 B2, B3 B3, and 4 B4, and the outer ends of the equalizing-bars B B, B B', B2 B3, and B3 B3 are adapted to be hitched by the usual hitching devices C to the draft-animals preferably Specification of Reissued Letters Patent. Reissued April 27, 1909.

Original No. 819,463, dated May 1, 1906, Serial No. 280,556.

Serial No.

Application for reissue iled June 18, 1908.

three for each equaliZing-bar, so that six animals are abreast for each draft-bar A A' A3 A3. To the pair of equaliZing-bars B3 on the outermost draft-bar A4 are hitched three draft-animals by the use of swingletrees D, D', and D3, of which the sWingletrees D and D2 are connected by the attaching devices E and E' with the outermost ends of the equalizing-bars B, While the middle swingletree D' is connected by the iiexible connections E2 with the inner ends of the said equaliZing-bars B4. Each of the draft-bars A', A2, A3 and A4L is provided at its middle with a iixedclevis F, and each clevis projects rearwardly4 and carries a ring G, connected With one end of a chain H', provided at its other end with a branch chain H', connected with the inner ends of the neXt rear equaliZing-bars, .as Will be readily understood by reference to Fig. vl.

The fulcrum-points of the several pairs of equalizing-bars B B, B' B'B2 B2, B3 B3, and B"L B4L vary according as the. power in front diminishes relative to the drafts on the outer ends of the equaliZing-bars, so that iinally the three leading animals connected Witlrtlie swingletrees D, D', and D2 pull against the animals immediately behind.

The detail construction of each draft-bar A, A', A3, A3 and A4 is as follows: Each draftbar is 'formed of two members A5 and A3, connected With each other at the middle by bolts I, which extend through the said members and through the side arms of the corresponding U-shaped clevis F, (see Fig. 4,) a thimblc J beiner placed on each bolt I between the opposite races of the side arms of tire clevis F, so as to space the members A5 and A6 a desired distance apart and to allow of bending the members A3 and A3 into a curved or arched shape, as plainly indicated in Fig. 3 by the use of the bolts K, extending through the outer ends of the members A5 and A6 and forming the fulcrums for the corresponding equalizing-bars B B, B' B', B2 B3, B3 B3 and B4t B4. Each of the clevises F is provided at the terminals of its side arms with angular flanges F', abutting against the front edges of themeinbers A5 and A3 of the draft-bar to relieve the bolts as muchL as possible ofthe strain exerted on the clevis F. Each of the bolts K extends through rubbing-plates L on the members A'5 and A3 of the draft-bar, and also through rubbing-plates L' on the equaliZing-bars t0 reduce the friction of each equaliZing-bar to a minimum, it being understood that by adjusting the nuts on the bolts K the desired contact can be obtained between the rubbingplates L and L. By curving the members A5 and A, as described and shown in F ig. 3, suficient clearance is given for the inner ends of the equaliZing-bars to allow free swinging movement thereof without danger of producing undue friction. On the outer end of each equalizing-bar is arranged a clevis N for connection with the corresponding bitching device C or the swingletrees D and D2,'p1e viously described, and each clevis N is made U-shape (see Fig. 5) and straddles the corresponding equalizing-bar, and its rear endis ivotally connected at N with a strap N2,

tting against the rear edge of the equalizingbar and provided with a number of apertures N 3, one of which is engaged by a bolt N 4, employed for securing the strap N 2 to the equalizing-bar. By having the several apertures N3 the strap N 2 can be readily adjusted in a longitudinal direction on the equalizingbar to bring the clevis N into proper position. Thus a bitching device may be readily adjusted in a transverse direction by adjusting the strap N2 of the clevis N correspondingly, and without requiring detachment of the team connected at the time with the corresponding bitching device. As the outer portions of the rearmost equaliZing-bars B are of considerable length, I prefer to connect the outer portions of the said equaliZing-bars by braces O with eyes K, formed on the upper .ends of the pivot-bolts K, held on the rearmost draft-bar A. As each brace O is free to turn in the eye K, it is evident that it does not interfere with the free swinging movement of the corresponding' equalizing-bar B, and at the same time the latter is properly braced. The several equalizing-bars B', 132, and B3 are provided with tie-rings P for attaching the heads of horses which are imme- 1 diately in the rear of such bars. By arranging the equalizing-bars between the members A5 and A6 of a draft-bar and by connecting the equalizing-bars with the next clevis F ahead in the manner described it is evident that a comparatively short draft-equalizer is provided, even when a very nlarge number of draft-animals is employed. It will further be seen that by the arrangement described an entanglement of the draft-animals is not liable to take place, and an exceedingly strong and durable draft-equalizer is provided not liable to get out of order or be broken when in use.

What I claim is:

1. A draft-equalizer comprising a plurality of successively-arranged draft-bars, a air of equalizing-bars pivoted on each dra t-bar, exible connections between the inner ends of a pair of equaliZing-bars and the middle of the next draft-bar ahead, and braces connecting the rearmostV draft-bar with its equalizing-bars.

2. A draft-equalizer comprising a plurality of successively-arranged draft-bars, each made of a pair of spaced members, a clevis and means securing the clevis and members together at the middle thereof, pivots secured to the outer ends of the said members, a pair of equalizing-bars mounted to swing on the said pivots between the said spaced members, and chains connecting the inner ends of a pair of equalizing members with the clevis on the next draft-bar ahead.

3. A draft-equalizer provided with a draft-bar formed of spaced members, a clevis having its side arms engaging the inner opposite faces of the said members at the middle thereof, and bolts passing through the said members and the side arms of the said clevis.

4. A draft-equalizer pro vided with a draftbar formed of spaced members, a clevis having its side arms engaging the inner opposite faces of the said members at the middle thereof, bolts passing through the said menibers and the side arms of the said clevis, pivots held in the outer ends of the said spaced members, and equaliZing-bars extending between the said members and fulcrumed on the said pivots.

5. A draft-equalizer provided with a draftbar formed of spaced members, a clevis having its side arms engaging the inner opposite faces of the said members at the middle thereof, the terminals of the said clevis side arms having angular fianges engaging the front edges of the said members, and bolts passing through the said members and the side arms of the said clevis.

6. A draft-equalizer provided with a draftbar formed of spaced members, a clevis having its side arms engaging the inner opposite faces of the said members at the middle thereof, bolts passing through the said members and the side arms of the said clevis, and thimbles on the said bolts between the said side arms of the clevis, to spread the said members farther apart at the middle than at the ends.

7. A draft-equalizer provided with an equalizing bar and a clevis for the outer end of the said equaliZing-bar, the clevis being fulcrumed on an attaching-strap having a plurality of apertures, and a bolt on the said outer end of the equalizing-bar engaging one of the said apertures.

HERMON C. SCOTT.

Witnesses:

D. R. THRooP, CHAs. T. STANLEY.

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