US1409076A - Plow - Google Patents

Description

J. BUCHANAN.

PLOW.

APPLICATION FILED OCT! 31. me.

1,409,076, Patented Mar. 7, 1922.

2 SHEETS-SHEET I.

J. BUCHANAN.

PLOW.

APPLICATION FILED OCT. 3|. ms.

1,409,076. Pat nt d Mar 7, 1922.

2 SHEETS-SHEET 2.

Qwueutoz UNITED STATES PATENT OFFICE.

JUDSON BUCHANAN, OF CHATTANOOGA, TENNESSEE,

ASSIGNOR,- BY MESNE ASSIGN- CORPORATION OF NEW JERSEY.

PLOW.

To all whom it may concern:

Be it known that I, Jonson BUCHANAN, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented a new and useful Improvement in Plows, of which the following is a specification, reference being had to the accompanying drawing.

My improvement relates particularly to plows having curved mold boards intended to turn-the slice of earth which is cut by the plow.

The object of my invention is to provide a practical mold board which is slotted lengthwise, in order that there may be a reduced area making contact with the slice of earth, whereby frictional resistance to the forward movement of the plow is reduced and whereby the pressure on a given area of the scouring surface may be increased and better shedding may be produced in consequence of such increased pressure. A further object of the invention is to secure the rear ends of the fingers or bars of the mold board detachably and in such manner as to avoid interfering with the shedding, and to form large clearance for material falling over the upper edge of the mold board.

In the accompanying drawings,

Fig. l is a side elevation of a plow embodying my improvement, the mold board being slotted and the handles and the beam being broken off;

Fig. 2 is a similar view with the mold board removed;

Fig. 3 is an elevation of the slotted mold board removed from the plow;

Fig. 4 is a section on the line, 44, of Fi 1' Igigf5 is a section Fig. 6 is a rear view of the lower portion of the structure shown in the lower portion of Fig. l.

Referrin to Figs. 1 to 6, inclusive of said drawings, 3 is the beam, B is the frog secured to the beam by bolts, A, C is the land side secured to the frog by bolts, C The land side is of the usual form. D is the share; This is of usual form and secured to the frog by a bolt, D extending through the share and the fro Rearward of the share is the shin piece, E, secured to the fro by means of a bolt, E.

sea a d of the furrow side of th sh n on the line, 5-5, of

Specification of Letters Patent.

Patented Mar. 7, 1922.

Application filed October 31, 1916. Serial No. 128,701.

piece and the share, the forward portion of the one piece slatted mold board, F, is secured to the frog by means of two bolts, F extending through that portion of the mold board and the frog.

The handle H adjacent the mold board extends only to the rear edge of the mold board and a T-form member G has its shank secured to the end of the handle by spaced bolts G, a slot being provided in the shank for reception of the upper bolt to allow for any necessary adjustment of the handle H. Said member, G, may be regarded as a part of said handle. The head of the member, G, is at the front of said handle, H, and opposite the inner face of the mold board and at a distance of a few inches therefrom. A stay rod, I, has one end secured to the lower part of the head of the member, G, by means of a bolt, I and has its other end secured to the land side, C, by means of a bolt, I that end of the stay rod being bent downward parallel to the land side.

To the lower end of the other handle, H a metal bar, H is secured by means of bolts, H and the lower end of said bar is secured to the land side, C, by means of a bolt, H

Rearward of the frog, B, the mold board has slots, F which are approximately horizontal but are curved to conform approximately to the course traversed bythe land slice in moving rearward over the mold board. Furthermore said slots are widened going from the front to the rear. The drawings show three such slots, the mold board having four fiat bars or fingers directed rearward and terminatingnear the head of the T-form member, G. The moldboard has a closedor solid forward portion and its longitudinal or upper and lower edges are substantially parallel, the outer bars or fingers are somewhat shorter than any intermediate bar and they all increase in width as they approach the solid portion, the upper bar having the greatest width. Between each such bar or finger and said head is a tubular spacing member, G and a bolt, G extends through said head and each such member and the adjacent mold board bar or finger. By this means, the mold board bars and the member, G, are securely bound to each other; and the member, G, is firmly stayed through the stay rod, I.

The gradual widening of the mold board slots, F facilitates the mo em n o earth and trash rearward over the mold board, the earth and trash, entering such slots, being made free by the widening of the slot. Furthermore, by setting the member, G, lnward away from the rear inner face of the mold board and using spacing members, G to 'join said member, G, and the mold board fingers or bars, the clearance between the bars is extended rearward entirely. to the rear ends of said bars, so that earth and trash extending to said slots may move rearward without hindrance until it is discharged from engagement with the mold board.

If the bars were not tapered and the mold or hang. On the contrary, the tendency is to remove and release earth and trash from the edge. It will be observedthat by tapering the bars, the reversely tapering slots can be provided while the bars are set substantially into parallel with the relative travel of the land slice.

It is also to be observed that the two handles, H, and the member, G, and the stay rod, I, are so placed with reference to the, land side and the mold board as to form ample clearance for material (earth or trash) falling over or through the mold board, whereby clogging or choking of said material between the mold board and the land side is prevented.

The rear end of the mold board is out of alignment with the forward end of the adjacent handle and the head ofthe member, G, and the spacing members, G and bolts, G form a lateral structure located between the rear end of the mold board to the adjacent handle, II, and connecting said members. By thus using said transverse structure extending laterally from the rear end of the mold board, extending the handle,

forward and downward until it substantiallymeetstheinner face of the mold board is avoided. Thus the presence of the handle in the throat between the mold board and the landside at the rear of the frog is avoided.

. This facilitates the passage of'earth and trash, accidentally falling over the upper edge of the mold board, through said throat.

IVhile the general outline or form of the mold board is left as large as usual, the actual area making contact with the earth is much reduced, whereby frictional resistance to the forward movement of the "plow is reduced. At the same time the pressure of the earth against the mold board is applied to a smaller aggregate area. Hence more power is applied on a given area tending to make the earthslide rearward on the mold board. This means more effective action to compel the plow to scour in ground that tends to stick to the mold board;

7 I claim as my invention,

1. In a plow structure, a slotted 1nol.d

board comprising bars tapering from the front rearward and separated by slots which are tapered inversely to the taper of the bars, and the bars being .set substantially parallel to'the' relative travel of the land slice, and means for supporting the rear ends of said bars, comprising a T-shaped member with its shank secured to a part. of theplow frame and having its head eX-Z tendlng across the rear end of the mold board and spaced therefrom, and supporting elements connecting the end of each bar with the head of said member, substantially as described. ,7 Y

.2. In a plow structure, a slotted mold board comprising bars tapering.fromthe front rearward and separated by slots which 7 are tapered inversely to the taper of the bars, and the bars being set substantially parallelwto the relative travel ofthe land slice, a handle having its lower end adjacent to andspaced inwardly from the rear endof thenioldboard, and a transverse memberjoined to said end of the handle and having supportingelements extending tolthe rear end of each of said bars, whereby clearance space is left behind the mold board and between the rear ends of the bars, 'substantially as described.-

3. As an article of board consisting of an integral-plate having a solid forward portion adapted to be connected .to a p'lowshare, and a longitudinally slotted rear portion forming outer andinner pairs of tapering flat bars, the upper bar of the outer pair being substantially twice.

as wide as the other bars where it merges with the solid forward portion of the plate,

and the longitudinal edges of the moldboar 7 being substantially parallel. r

In testimony whereof I have signed my manufacture, a mold name, in presence of two witnesses, this 17th 7 day of October, in the yearone thousand nine hundred and sixteen. 1 :7 "JUDSON BUG ANAN.

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