US26771A - Improvement in the moles of drain-plows - Google Patents

Description

J. LANE,

Mole-Plbw.

Patented Jan 10. 1860.

Inf/euro.

7122726556 5. Q WWW UNITED STATES PATENT OFFICE.

JOHN LANE, ()F LOOKPORT, ILLINOIS.

IMPROVEMENT IN THE MOLES OF DRAlN-PLOWS.

Specification forming part of Letters Patent No. 26,771, dated January 10, 1860.

To all whom it may concern: chance being allowed for the clay to give back Be it known. that I, JOHN LANE, of Lockand get out of the way of the mole. Hence port, in the county of Will and State of Illiit is that the desired density of compression nois,have invented a new and useful Improveat the sides of the drain by the mole is efmentintheShapeof the Moles of Undergroundfected, whereas the upward resistance of the Draining Flows; and I do hereby declare that clay is not so great, owing, first, to the existthe following is a full,clear, and exact descripence of the slit or crack formed by the colter tion of the same, reference being bad to the in the earth, and, secondly, to the clay yieldaccompanying drawings,forminga part of this ing upward. There is another diificulty with specification, in whichthe common-shaped mole making an arch- Figure 1 is a plan of my improved mole. Fig. drain. It is this: In turning corners, making 2 is a side view of the same; and Fig. 3 is a angles to the ditch, the mole-stem will leave a rear view of the mole as in use, an underground crack of some three times the thickness of itdrain being shown in its transverse section. self just at the pointof turning, and it is often Similar letters of reference in each of the necessary to dig down to the drain and repair several figures indicate corresponding parts. the corner with stone. Myinvention obviates It is very desirable in underground drains to a very great extent all difficulties experito have the sides and top of the same comenced in the use of the mole. pressed equally, while the bottom is left un- To enable others skilled in the art to make compressed; and in forming such drains with and use myinventionJwill proceed to describe any of the mole-plows heretofore devised the its construction and operation. clay is densely compressed on all sides, yet AA designate the mole; B,the mole-stem or the compression is not equal at the top and colter; and c c are the shoulders on the mole. sides,and hence the development of myinven- These shoulders are formed by enlarging the tion, which is designed to effect an equality of mole abruptly at the center of itslength. They compression at top and sides, and also to close commence at the base of the mole, forward of i up the slit made by the colter of the mole more the back of the stem or colter, slope back effectually than it can be done by simply formwardly as they rise, and come together at a ing conduits in the top of the mole on each side point midway between the stem or colter and of the colter. the rear end of the mole.

My invention consists in so constructing a In operation, the part A of the mole forms mole for underground-draining plows that the a minor drain with compacted walls, and then front half of it will first form what I shall the shoulders, by abruptly enlarging the minor term a minor arch-shaped drain with comdrain for the part A to enter and form what I pacted walls,and the rear half, following after, term the major drain, necessarily trim off a will abruptly, instead of gradually, convert the portion of the packed clay which forms the side same into a major drain or a drain of the dewalls of the minor drain and convey it up and sired size, and in doing this will, owing to its deposit it where it is wanted to stop the slit of abruptly commencing to increase the size of the mole stem or colter, and to compensate for the minor drain, cut away the compacted dirt the upward yield in the earth to the top of the which forms the walls of the minor drain from mole.

the base to the top of the drain, and conduct The main advantage resulting from my parh. the same in its compacted condition to the top ticular combination of the minor and main of the drain, behind the colter, and thus inmoles and conductors is this: The clay is comsure a more perfect packing of the top of the pressed before being conveyed to the top. drain and of the filling up of the slit formed Therefore a more perfect filling up of the top by the colter with dirt,which has already been of the drain and stem or colter slit is accomto a very great extent rendered compact. plished.

In forming a drain with a mole the lateral By referring to Fig. 3 a drain formed by my resistance of the clay is great, owing to no mole is shown. The dark lining upon the sides and top is the packed clay. The dotted linee e illustrates how the earth yields or rises when the mole is in action. It is to overcome the diflicult y resulting from the earth thus yielding as well as to fill up the colter-slit that I convey clay which is already partially compressed from the compacted sides of the minor drain and deposit it on top of the mole,in rear of the colter. Thus conveying up compressed clay enables me to make adrain with its sides and top of nearly equal density and with the colter slit or crack of the mole-stem more effectually closed.

Witnesses:

O. A, WELoH, J. D. LOOMER.

and'

Images