US396944A

US396944A - mcmahon

Info

Publication number: US396944A
Authority: US
Publication date: 1889-01-29
Anticipated expiration: 1906-01-29

Description

(No Model.)

- J. MOMAHON.

- HARROW FRAME. H No. 396,944. Patented Jan. 29, 1889.

UNITED rates IATENT FFICE.

JAMESMCMAIION, OF KAIIAMAZOO, MICHIGAN, ASSIGNOR TO D. U. & H. C.

REED & (.30., OF SAME PLACE.

HARRUW F'RAIV] E.

SPECIFICATION forming part of Letters Patent No. 396,944, dated January 29, 1889.

Application filed February 14, 1888. Serial No. 263 ,996. (No model.)

T (6 10710121. it may concern..-

.Be it known that I, JAMES MlfillAIHlN, a subject of the Queen of England, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented a new and useful Float ll arrow-llrame, of which the 'lollowing is a specification.

This invention has for its object to construct a float harrow-lramo in which the bars which are transverse to the wooden draft-bars consist of thin metal strips bolted to the draftbars on the under side. Other objects will appear in the description and claim.

In the drawings forming a part of this I 5 specification, liigure l is a plan of one-half of the harrow; Fig. 2, a, section on a line wit-h the edge of one of the curved harrow-teeth; Figs. 3, i, and 5, sections on line 2 2 in Fig. '1, showing changes. Figs. 6 and 7 are broken details in perspective, enlarged, and below described.

Referring to the letters of reference marked on the drawings, 1- are the ordinary wooden (or metal) draft-bars. To these bars, on the 2 5 under side, I attach the thin metal cross-bars c, and, if preferred, the barrow-teeth a may be clamped between the bars B c, as indicated in Figs. 2, 3, -l-, and 5. The advantage of haw ing the thin metal cross-bars c on the under 0 side of the draft-bars instead of on top is that the d raft is lessened, because the under beams are the ones that draw the dirt ahead of them when the barrow moves along, and by making the bars a of metal they will last 3 5 longer, and, being thin, they will rather scale through the dirt than draw the same in front of them.

Among the advantages of having the crossbars 0 thin metal and beneath the draft-bars B, instead of vice versa,maybe named cheap ness, greater strength, and, the cross-bars be ing much the shortest, there is less frictional surface of the barrow-frame in contact with the soil, and for this additional reason the draft is lessened.

The cross-bars 0 may be attached to the draft-bars B by an upper and lower clip plate and bolts, Figs. 2 and 3, or by passing the bolts through the bar 0, and thus dispensing with the lower clip, Fig. l, or by employing the U-bolt, Fig. 5, or in any other suitable manner desired.

In Fig. 6 the broken portion of the bar 0 shows gains e, which receive the clampingbolts and prevent the frame from twisting or drawing apart. The end of the bar 0 is turned up at as, this being the forward end or the upper left-hand end in Fig. 7. This prevents this end of the thin bars from catching against things. Fig. 7 also shows the end 00 and a broken part of a tooth, c.

Having thus described my invention, what I claim,'and desire to secure by Letters Patent,

A float harrowframe consisting of the wooden draft-beams, the straight solid thin metal cross-bars on the under side of the draft-beams, said cross-bars having the side gains and the upwardly-turned ends projecting beyond the draft-beams at the forward ends, and the clamping-bolts in the gains of said cross-bars, substantially as set forth.

In. testimony of the foregoing I have hereunto subscribed my name in presence of two witnesses.

JAMES Mc'MAl-ION.

Witnesses:

Moses HILL, Asa CLARK.