US669641A - Plow. - Google Patents

Description

Patented Mar. l2, IQOI. E. M. HEYLMAN,

No. 669,64L

PLOW.

(Application filed Aug. 80, .1900.)

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No. 669,64l. Patented Mar. l2, l90l.

. E. M. HEYLMAN.

PLOW.

(Application filed Aug. 80, 1900.)

(.No Ibdel.) 3 Sheets-Shoal! 2Q EDWVARD M. HEYLMAN, OF CANTON, ILLINOIS.

PLOW.

SPEGIFIGATION formingpart of Letters Patent No. 669,641, dated March 12, 1 901.

Application tiled August 30, 1900. Serial No. 28,580. llo model.)

To all whom it may concern:

Be it known that I, EDWARD M. HEYLMAN, of the cit-y of Canton, county of Fulton, and State of Illinois, have invented certain new and useful Improvements in Plows, of which the following is a specification.

This invention relates to means for con trolling the rear caster-wheels of wheel-plows. It is exemplified in the structure hereinafter described, audit is defined in the appended claims.

In the drawings, forming part of this specification, Figure l is a plan showing the general configuration of a wheel-plow in dotted lines and representing the features to which my invention pertains in solid lines. Fig. 2 is a detail plan illustrating the action of the controller for the rear caster-wheel. Fig. 3 is an enlarged detail of a part of the castercontroller. Fig. 4 is a detail in side elevation of the part of the caster-controller shown in Fig. 3. Fig. 5 is a side elevation of the coltershank clamp. Fig. 6 is a section through Fig. 5 on broken line 0:. of the plow raising and lowering mechanism, showing the plow-beam lowered. Fig. 8 is a similar View showing the plow-beam raised.

At 1 is shown the bent axle of the front furrow-wheel of the plow. At 2 is shown a short horizontal shaft with which the tongue 3 is pivot-ally connected, and this shaft is fastened onto the upper end of the vertical extension of axle 1 by means of a bracket 2 (Seen only in Fig. 4.) A cross-arm 4 has a forward extension 4, which is fastened to the bracket 2, and one end of the cross-arm is slotted longitudinally, as shown at 5. An arm 11 is fas tened onto the upper end of the vertical extension of the bent axle 10 of the rear casterwheel, and such arm extends horizontally sidewise away from the land. A rod 8 connects pivotally with arm 11, and its opposite end connects both pivotally and slidably with cross-arm 4. The forward end of rod 8 is bent vertically to extend through slot 5, as shown at 9. A collar or slide 6 is attached to end 9 of the rod, and a spring 6 connects at one end with the collar and at the other end with a pin or bolt 7 in the end of the cross-arm 0pposite the slot. The inner end of slot 5 is approximately in line with the vertical extension of axle 1, and when the plow is operating Fig. 7 is a side elevation the bearing of rod Sis not far from the pivot of the tongue. The slotted end of the cross arm extends landward while the plow is in I operation, and the spring tends to hold the rod from moving out of alinement with the front post-i. a, the pivot of the tongue and of the front furrow-wheel. The action of the soil on the moldboard of the plow tends to carry the plow to land and swing the rear caster-wheel forward; but the arm 11 imparts such tendency to rod 8, and forward movement of the rod is resisted by the cross-arm on the front post. So long as the tongue is presented forward the forward thrust of arm 11 is taken by arm 4 at a point in line or approximately in line with the vertical extension of axle 1, and so the team wabble is not imparted through the tongue to the rear caster-wheel and the thrust of the arm of the caster-wheel is not imparted to the tongue.

In turning a right-hand plow to the right, as shown in Fig. 2, the slotted end of crossarm 4 swings forward, the thrust of the rod stretches spring 6, and the arm 11 swings forward and permits a similar swing in the rear caster-wheel. In turning the plowaround in the opposite direction the slotted end of arm 4 is presented rearward and the rod stretches spring 6 by a backward pull to permit the caster-wheel to swing in a direction opposite to that represented in Fig. 2. In either case the spring carries the bearing 9 of rod 8 to the inner end of slot 5, in line with the forward post, as soon as the tongue assumes the position shown in Fig. 1, with the resulthereinbefore described.

The clamp for the colter-shank comprises a plate 13, a bar 24, a disk 19, and a gib 14. The plate 13 is circularly recessed .and undercut, it has lugs through which the securing-bolts 17 and 18 extend, and it has teeth or corrugations 16 around the edge of its circular recess. The disk 19 is shaped to conform to the undercut recess of plate 13, and it has a lip 20 on one of its sides which bears against a part of the corrugated surface of plate 13.- Flanges 21 on the face of disk 19 are concaved to form bearings for the coltershank 12. The gib 14 has one end shaped to bear against the corrugations of plate 13, and its other end 14 is shaped to embrace the A bolt 22 extends through the colter-shank.

disk 19 and through the gib, between the ends thereof, and a nut 23 on bolt 22 provides means for clamping the undercut edge of plate 13 between the disk and the gib, while at the same time clamping the colter-shank between bearings 21 of the disk and extension 14 of the gib. The plate 13 is secured to a plow-beam 15. The disk is turned to give the colter-shank the required pitch with relation to the beam and the colter-shank is turned on its longitudinal axis to bring the colter into proper position, and both adj ustments are made secure by tightening the single bolt 22.

The plow raising and lowering mechanism is shown in detail in Figs. 7 and 8, and its construction is as follows: A shaft 25 is journaled in a sleeve-bracket attached'to a side of the plow-frame, aquadra'nt 26 is fixed onto the outer end of the shaft, and a hand-lever 27 is fulcrumed on the shaft in position to engage a notch of the quadrant when swung forward. On the inner end of shaft 25 is fixed an arm 28, having a bell-crank extension 29, and a link 33 connects the swinging end of the arm with the plow-beam 15. A finger 34 on arm 28 extends above the link 33, and a set-screw provides means for limiting the swing of the arm with relation to the link. A foot-lever 31 is pivoted to the frame on the same side thereof as the arm 28, butin front of such arm a bell-crank extension 32 is formed on foot-lever 31, and a stiff linkbar 30 connects pivotally at one end with bell-crank extension 29 of arm 28 and at the other end with extension 32 of foot-lever 31. These parts constitute the lifting mechanism for the plow-beam, and they are so disposed that when the plow is lowered, as shown inFig. 7, the arm 28 and the link 33 are approximately in line. Whether or not the arm and the link establish a dead-center lock to hold the plow lowered depends on the adjustment of set-screw 35, and the plow may be locked firmly in the ground or the centers may be held out offline sufficiently to permit the plow to rise on encountering an immovable obstruction. When the plow is lowered, the foot-lever 31 inclines backward, and when it is desired to raise the plow forward pressure on the foot-lever carries arm needed it lies in the position shown in the drawings, and whenever it is needed it is eat n swung forward until a tooth or bolt engages the notch of the quadrant, the plow being lowered, and backward pull on the lever will then be transmitted to the plow-beam through the quadrant, the arm, and the link. This provision enables the application of foot-pressure 01}- hand-pressure or both hand-pressure and foot-pressure to the raising of the plow.

To hold the plow raised and provide for lowering the plow by foot action, a second foot-lever 37 is fulcrumed in the plow-frame opposite lever 31 and a bell-crank extension 38 of lever 37 is connected with the rear bailbracket 36 of the plow-beam through a stiff link-bar 40. The link 40 has a finger 41 extending forward beyond its pivot with the foot-lever, and a stop-block 39 on extension 38 of the lever limits the swing of the link on the lever. When the plow is raised, the footlever 37 swings rearward, as shown in Fig. 8, and the extension 38 and link 40 form a deadcenter lockto hold the beam raised. When the beam is to be lowered, the foot-lever is pushed forward sufficiently far to break the dead-center lock and permit the plow to descend.

The plow-raising mechanism and the colter-clamp described herein have been claimed in separate applications filed November 16, 1900, and serially numbered 35,729 and 35,730,

. respectively.

I claim 1. A caster-controller for plows, comprising an arm fixed on the vertical extension of the caster-axle and extended sidewise therefrom, an arm crosswise of the front post or vertical pivot of the tongue and partaking of the side swing of the tongue, a rod connecting pivotally with the arm of the caster-wheel at one end and connecting both pivotally and slidably with the cross-arm at the other end, and a spring tending to hold the connection of the rod with the cross-arm approximately in line with the vertical pivot of the tongue.

2. In a caster-controller for plows, the combination of an arm fixed on the vertical extension of the caster-axle and extended sidewise therefrom, a slotted arm connected with the tongue crosswise of the vertical pivot thereof and extended horizontally therefrom, a rod pivotally connected at one end with the arm of the caster-wheel and at the other end with the slot of the tongue-arm and a spring tending to hold the connection of the rod with the cross-arm at a point approximately in line with the pivot of the tongue.

In testimony whereof I sign my name in the presence of two subscribing witnesses.

EDWARD M. HEYLMAN.

Witnesses:

R. A. HALL, W. O. JONES.

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