86 Tmnprovement of the Drill Plough.[Feb

time,-s0 ſixes the shafts to the axle-tree, that the wheels wil then follow in the same line with the horse. ee are wheels of four feet in diameter, the nave of one of which has on it a cast iron wheel at ft, for the purpose of turning the axis of the seed box, which has a sìimilar wheel of one-fourth its diameter, whence the axis of the seed box revolves four times to one revolution of the wheel.

Construction of the seed box. This consists of boards about an inch in thickness, is forty-eight inches long within, tvrelve inches deep, twelve inches wide at top, and six inches wide at bottom; 1t 1s divided into six cells, in which the corn is to be put, as represented in Fig. 2. and should also have a cover with hinges to keep out the rain, and 1s to be placed in part over and in part before the axle-tree of the carriage at gg, Fig. 1. Beneath the bottom of the seed box passes a wooden cylinder at hh, Fig. 2. with excavations in its periphery to receive the grain from the six cells of the seed box Il, m, n, o, p, q, and to deliver it into the sìx oblique lues tü, which are made of tin, and cross each other, as re- presented in the plate. The use of the seed fluecs thus in- tersecting each other 1s to increase the length of the inclined surſace on which the secd descends, that if six or eight grains be delivered together, they might separate by their friction in descending, as not to be sown together in one point, which might be liable to produce tussocks of corn. As these seed flues cross each other béfore they pass through the coulter- beam at ce, Fig 1. it was necessary to make three of the round holes of the coulter-beam at one end backwarder than those at the other, and on that account to use iron staples or rings at one end instead of perforations, as at ww, Fig. 1. These tin flues deliver the seed at the time of sowing into the small furrows or drills, which are made by the coulters before them. These seed flues have a joint at zz, where one part of the tin tubes slides into the other part, and they by this mneans can be occasionally shortened or lengthened to accommodate them to the coulters when placed at seven inches distance for sowing barley, or at nine for SOWINS wheat. At the bottom of this‘sced box are sì% holes, one in each cell, to deliver the corn uito the excavations of the cylinder which revolves beneath them. These holes are fur- nished on the descending sìde as the cylinder revolves with a strong brush of bristles about three-fourths of an inch long, which press Hard on the tin cylinder: on the ascend- ing side of the revolving cylinder, the holes at the bottom of the seed box are furnished with a piece of strong shoe-sole leather which rubs upon the ascending side of the cylinder. By these means the corn, whether beans ox wheat, is nicely