US849265A

US849265A - Draft-compensating device.

Info

Publication number: US849265A
Application number: US28690205A
Authority: US
Inventors: Milton Ives Parkhurst
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-11-11
Filing date: 1905-11-11
Publication date: 1907-04-02
Anticipated expiration: 1924-04-02

Description

- PATENTBD APR. 2, 1907. M. 1.-.PARKHURST. r

DRAFT GOMPENSATING DEVICE.' APPLIoATIorf 4FILED Nov.11. 1905.

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ailment MILTON IVES PARKHURST, OF FANCY PRAIRIE, ILLINOIS.

DRAFT-COMPENSATING DEVICE.

Specification of Letters Patent.

Patented April 2, 1907.

Application led November 11, 1905. Serial No. 286,902.

To MZ whom t may concern:

Be it known that I, MILTON IvEs PARK- HURsT, a citizen of the United States, residing at Fancy Prairie, in the county of Menard and State of Illinois, have invented new and useful Improvements in Draft-Oompensating Devices, of which the following is a specification.

The invention relates to an improvement in draft-compensating devices for use in connection with binders, harvesters, or the like.

The main object of the present invention is the production of means for equalizing the draft and supporting the weight of the frame; and to this end the invention consists in certain details of construction and combinations of parts, which will be described in the following specification, reference being had to the accompanying drawings, in which- Figure 1 is a plan view illustrating the application of my improved compensating device to the binder. Fig. 2 is an enlarged side elevation, partly in section, illustrating means for coupling the tongue to the binder and the adjustability of said tongue with relation to the frame. Fig. 3 is a vertical sectional view of the tongue-coupling. Fig. 4 is a longitudinal section of the tongue drawhead, the latter being shown in place therein. Fig. 5 is a vertical sectional view, partly in elevation, of one of the spring compensating members. Fig. 6 is a view in elevation, partly in section, of the truck-support for the frame.

Referring to the drawings, wherein like reference-numerals indicate like parts throughout the several views, 1 represents the binder, which so far as the purposes of the present invention are concerned may be made of any desired construction.

2 represents what I term a "tongue-coupling, comprising a box-like member having laterally-projecting plates 3, designed to be bolted or otherwise secured to the side bar 4 of the binder-frame. The coupling is set, preferably, vertical relative to the normal position of the frame and is preferably open at top to permit the ready introduction of the tongue. The side walls of the coupling are formed with a series of alined openings 5, designed to receive a coupling-pin 6, adapted for passage through an opening in the tongue, as hereinafter explained, whereby said tongue is secured to the coupling.

The tongue 7, which may be of any length desired or necessary, is designed to be inserted laterally within the coupling 2 and to be secured therein by the pin 6 passing through the alined holes of the coupling and through an opening 9, formed in the tongue, thereby supporting the tongue at the height desired. The rear end of the tongue is provided with an arm 10, removably secured by a bolt 11 and formed with an arrow-head end. This arm is arranged for cooperation with a guide- 14 represents what I term the draw-v head, being a rectangular box-like structure open at the ends and designed-to slidably embrace the tongue 7. The draw-head is connected with the tongue and limited in its movement thereon through the medium of a pin 15 passing through the upper and lower walls of said draw-head and engaging a longitudinally-arranged slot 16, formed in the tongue. From the rear end of the drawhead arms 17 and 1S are projected in opposite direction, preferably inclining toward the rear of the tongue. These arms are exact duplicates in length and inclination and are each formed with a series of holes 19, extending longitudinally of the arms. An arm 20 projects laterally from the forward end of the coupling 2 and is formed frwith a series of openings 21, spaced longitudinally thereof.

The compensating devices proper comprise duplicate casings, each including cylindrical members 22 23, arranged for threaded connection end to end, as at 24, the adjacent ends of the members being open, While their remote ends are closed or headed. This construction provides a cylindrical casing having closed ends, in which is mounted springs 25 26. Each of the springs encircle rods 27 28, respectively, which at their inner or adjacent ends are provided with heads 29, against which the inner ends of the springs bear, the outer or remote ends of the springs bearing against the respective heads of the casing. The outer or remote ends of the rods 27 28 project, respectively, through the IOO IIO

opposite headsof the casing and are terminally provided with hooks 30 31.

In my invention I utilize one of the compensating devices described on each side of the tongue, the forward end of the device on the side of the tongue next the binder-frame being removably connected in one of the openings 19 in the arm 17 through the junction of the hook 31 therewith, while the rear end of said device is connected, through the medium of the hook 30, to an eyebolt 32, secured to the forward frame-bar of the binder. The opposite compensating device is similarly connected, through the medium of its hooks 30 and 31, to the arms 20 and 18, projecting, respectively, from the coupling 2 and draw-head 14. By virtue of the openings 19, formed in the arms 17 and 18, the forward ends of the compensating devices may be adjusted relative to the draw-head, thus increasing or decreasing the tension of the springs 25 26 within the casings in an obvious manner. By preference the spring 25 on the same side of the tongue as the evener is of materially greater strength than the spring on the opposite side, as it is at once obvious that the compensating strain of said former spring is necessarily greater than that of the latter spring.

The four-horse evener 33 is secured to the draw-head 14 preferably through the medium of a pin 15, and to the free ends of the evener are secured the usual two-horse eveners 34. L

In connection with the equalizer described I arrange a truck for supporting the frame of the binder when the same is not under draft, said truck comprising a casting 35, lsecured to the forward frame-bar of the binder and formed with a vertically-arranged opening 36, in which is revolubly and slidably mounted a stem 7, carrying at its lower end a yoke 38, in which is mounted a ground-wheel 39. Adjacent the yoke the stem 37 is provided with a collar 40, between which and the lower end of the casting is secured a coilspring 41. This truck is primarily designed for supporting the front of the binder when the team is standing or turning and at no other time, as the springs will support all the weight when in motion. The spring on the truck will prevent the contact of the truckwheel from elevating the machine by contacting with an elevation on the ground while the machine is in motion, as said spring will permit a yielding of the wheel without affecting the frame of the binder.

In operation the compensating devices are to4 be` adjusted by changing the connection of the hooks 81 with the arms 17 and 18 until the tongue is free of binding contact with the draw-head, it being obvious that if such compensating devices are of equal tension the forward draft of the teams will cause a lateral binding of the draw-heads upon the tongue. The hooks 31 may be engaged with one or the other of the holes 19 in the arms 18, so that the draw-head will move without lateral binding on the tongue. The tongue isunow adjusted longitudinally to give it such elevation as will compensate for the pull of the springs and insure that the weight of the binder is carried by the draft of the team.

From the construction described it will be seen that the compensating springs compensate for the draft of the binder and that the longitudinal adjustment of the tongue practically supports the weight of the machine by the draft of the team.

Having thus described the invention, what I claim as new is- 1. The combination with a binder or the like, of a tongue movably secured thereto, a draw-head movably mounted on the tongue and supporting the draft-eveners, and compensating devices on opposite sides of said tongue and connected to the draw-head and to the binder, said compensating devices being respectively of normally unequal strengths.

2. The combination with a binder, of a coupling secured thereto, a tongue adjustably supported in the coupling, a draw-head slidably engaging the tongue and supporting the draft-eveners, and compensating devices connected to the binder and to the drawhead, said compensating devices being respectively of normally unequal strengths.

3. The combination with a binder, of a coupling secured thereto, a tongue adjustably supported in the coupling, a draw-head slidably engaging the tongue and supporting the draft-eveners, and compensating devices connected to the binder and to the drawhead, each of said devices comprising a casing, and independent springs mounted within the casing.

4. The combination with a binder, of a coupling secured thereto and inclined with relation to the binder, a tongue having an inclined portion slidably supported in said coupling, means for adjustably securing the tongue with relation to the coupling, a drawhead slidably engaging the tongue, means for limiting the movement of the draw-head with relation to the tongue, arms projecting laterally and in opposite directions from the draw-head, and compensating devices adjustably connected with said arms at their forward ends, the rear end of one of said devices being connected with the binder, and an arm projecting laterally from the coupling toy receive the rear end of the other compensating device.

5. The combination with a binder, of a coupling secured thereto, a tongue adjustably supported in the coupling, a draw-head slidably engaging the tongue and supporting the draft-eveners, and compensating devices connected to the binder and to the draw- IOO `IIC) head, and a truck connected to the binder and adapted to support the same in the absence of draft on the tongue.

6. The combination with a binder, of a coupling secured theretoj a tongue supported in the coupling, draft-evener-suppor'ting means carried by the tongue, a compensating device connected to said means and to the binder7 and a second compensating device connected to said means and to the coupling, the latter compensating device being of relatively less normal strength than the first-mentioned compensating device.

7. The combination With a binder, of a coupling secured thereto, a tongue adjustably supported in the coupling and projecting rearwardly therebeyond, draft-evenersupporting. means carried by the tongue, a guide carried by the binder and formed with a curved guideWay of approximately triangular shape in transverse section, and an arm carried by the rear end of the tongue and formed With a projection for movable reception Within said guideWay.

In testimony whereof I aHiX my signature in presence of tWo Witnesses.

MILTON IVES PARKHURST. Witnesses:

i CrLAs. H. DERRY,

J. E. JACKSON.