US12838A - Improvement in plows - Google Patents

Description

TAVNNER L NESMITH.

Y Plow. l

No. 12,838, Patented May 8,1855.

y 'UNITED STATES PATENT OFFICE.

lIIVIPROVEM ENT IN PLOWS.

`Specification forming part of Letters Patent No. 12,838, dated May 8, 1855.

To all whom t may concern.'

Be it known that we, E. C. TAVENNER and OSCAR NESMITH, of Hamilton', in the county of Loudoun and State' of Virginia, have invented and made certain new and useful Improvements in the Construction ot' Plows; and

wc do-hegeby declare that the following is a full-,.clear, and exact description of the method Y 0f construction and mode ot' operating the same, ref'erencebeing had to tlicaccompanying drawings, making a part of this specifical tion, in Whichy Figure l is a perspective vView of the plow complete: a, t ct et, the compound or solid landside-plate; b b, the lip-piece or holdfast; c, end 0f grooved rest-place; d, the front of grooved rest-place; e, the screw-rest; f, the tap or nut to brace or stay rod; g g, nuts and screw-bolts by which the colter. or cutter is confined `to plow or draft beam.; h, nut and screw-bolt confining the upper end of standard to the beam ofthe plow; t1, rivets or bolt-fastenings to the mold J J J; la 7c, the fend-off or coltercleaner; L L L, the colter or cutter; m m, the tightening or brace bar; n a, the share.

Fig. 2 shows the landsideplate detached from the plow; a* at, the standard; a a, the

landsidef; b b, the lip-piece; c c, the grooved rest-piece; d,'the vcatchplace; 'e-e ft, screwrests; s, the toe-point; q q, heel-plate.

Fig. 3 is the share, showing the clip glrt,

` the land edge; it, bolt or screw hole.

the weight of the mold-boardJ J and the landside and standard a a ct a, a* a* ai, Fig. 2, the center line of weight being at the standard a* ai, which should be midway between the ends ofthe beam O O and end ofhelves T T, by which arrangement, together with using a shorter beam than is ordinarily used, any undue leverage, draft, or strain forward from the point W l is diminished, and whereby also is prevented the irregulartilting or dipping forward while in draft, as well as affording uniformity in the depth of plowing.

The new features ot' invention presented in ourirnprovernents consist, first, in constructing a solid or compound landside and standard a a a aa* ai, Fig. 2, showing one pieceof metal,`

cast or formed in any suitable manner, and having constructed therewith a lip or bent piece, b b,and a grooved rest-place, c c, with'a holdfastplace, d, and bolt-rests 'e f?, and a flanged attachmentplate, P P, and toe point or rest s, Fig. 2. Now, the advantage of this l compound landside and standard et a a a* a* ait, Fig. 2, over other devices for a similarpurpose is that by not having the mold-board J J J cast or formed in one piece with the standard a* a* the mold-board, when Worn out, can be replaced by a new one, attached, as described, to the original standard and landside combined. Then, again,the advantageof having the standard c* a* a* cast on the landside part aa a a o o, Fig. 2, is that a projection or lipor ange, b b, is formed or cast therewith,

this lip-piece b b answering as one of the attachment devices by which the mold-board J J J and the landside a c act are connecte'dand made attachable or detachable at pleasure-a very important desideratuln, found essential by practical plowmen. Y

Another feature of our improvements is the construction of a share or wing similar. to the ordinary plowshare in general form, but hasa piece clipped out on its landside edge,h*, as at 9*, and as shown in Fig. 3. This share or wing is combined in use with the compoundstandard landside, Fig. v2, and the clipped piece gt, Fig. 3, conforms to the recess shape at d, Fig. 2; and c c of same gureis the toe'part or rest for the share, Fig. 3, and n n, Fig. L

The advantage of our form of wing or share is that the clip or barb-like formationl g* answers as a device for connection to landside a a a c, which connection is readilydone with out requiring bolts or rivets to confine the win g in its piace. Thus simplicity of construe tion and facility of attachment or detachment are produced,`together with less expense 'in construction, and greater strength is attained by the wing or share being confined by aid of .implement of the kind.

the catch-plate d and the being stayed by contact with the grooved rest-place or toe-plate c c, Fig. 2.

Another feature of our improvements is the construction, use, and application, in combination with the landside aa a, standard a* ai, and colter L L L, of a fend-oit` or cleaner, K K, formed cf a folded piece or a solid grooved piece of metal, conforming to the shape and lapping around or resting on each side of the front part or edge of the colter; and connected with this fend-off or cleaner is a stayrod or tightening-bar,m m, connecting by rests c c and taps f with the standard part a* a* a* of the landside, Fig. l.

It will be observed that the shank part L S ot' the colter L L L, Fig. 1, does not pass through a mortise formed in the draft-beam O, butinstrad thereof is attached to the landside of the beam and confined to its place by a yokestaple, Fig. 4, the screw ends of which pass transversely through the draft-beam, and are confined or held in place by nuts or screw-taps g g, Fig. l. This arrangement of the colter admits of graduating it either forward or backward to suit the depth of plowing. This adjustability orgraduating of the colter is admitted of through the loosening` ot' the'screwtaps g g, Fig. l, and the retightening thereof, which last operation draws theyoke-staple up so that it clamps vor holds the shank part'L S up against the landsi'de of the plow-beam.

Having established the utility of our improvements the past year by actual test, we deem it unnecessary to dwell in detail description of the minor partsv of our improvements, and will simply state that the construction of our plow iuvolvesless expense, affords greater strength in all its parts, operates with less strain or resistance in the draft, turns the soil and sod with more uniformity than any other It forlns a regular furrow, and from the manner of attaching the sharen a to the mold-b'oard'J J J and landside a a, Figs. 1, 2, 3, there is 'no danger of roots, stumps, rock, stones, or 'other natural ob- Another advantage of our improvements is that our mold-board is distinct from the landside and standard,and thus incase of wearing out ofthe mold-board a new one can readily be attached to the plow, which could not be done where the mold-board and standard are cast together solid. Again, much time is saved and expense obviated in the mechanical arrangement, because we dispense with a separated standard and landside, which are generall y used.

In the use of our compound solid-standard landside the wearing away of its surface is obviate'd by attaching an ordinary heel-plate, q q, to tlielandside, as shown in Fig. 2. In the use of our improved plow we have ascertained that as 'much and better plowing can be done by the aid of two horses as has heretofore been done by three with the use ot' other plows.

We do not claim the lip-piece b b, toe-piece s, or grooved rest-piece c; but

Having given as full and clear a description as is essential to a mechanical and practical knowledge of the construction, use, and operation of our plow, we will here set forth that what we claim as new and useful and of our own invention, and as entitled to the protection of Letters Patent of the United States, is as follows, viz:

The landside-plate a a a a, in combination with the fend-oft' or cleaner K K, constructed and arranged substantially in the mannerand for the purpose set forth.

lEDW. C. TAVENNER. OSCAR NESMITH. Witnesses:

H. N. TAVENNER, ADDISON GREAR.

Images