Page:Federal Reporter, 1st Series, Volume 7.djvu/217

CROMPTON v KNOWLES. In Equity.

"Causten Browne, for complainant.

Chauncey Smith and B. F: Thurston, for defendants.

LOWELL, C. J. "The parties to this suit are the same as those in No. 308,* and the plaintiff, as in that suit, relies upon a patent which he has re-issued. In this case he complains that the defendants have adopted a compound lever to operate the drop-boxes or shuttle-boxes of their loom. These shuttle-boxes are required to assume different position, three, four, and so on, according to the number of colors which are wanted in the weft. The Khowles loom of 1863, referred to 'in the last case, con- tained two trains of mechanism, such as there described, con- sisting of fingers and jacks, as one party called them, or ex- tensible and contractible links, as they were termed by thể other, which reciprocated up and down, under the influence of a pattern, and by gravity, to engage with constantly rotating cylinders. In case 808 the motion given by the cylinders to the fack was used to move the levers which carrier' the Hea ales this bur attention is calfeď to kŸffär bekäm which is adéu to actuate a compound Tever, through which the rod which holds the shuttle-boxes is shifted into several poki tions! In the patent of 1868 there were described the simple levers operating with a cord and pulley, and at the probent time the defendants use, as I have said, a compound ever, which admits of a greater variety of motions that could be bb- tained by the two levers ilggs as won on 18 29979 of boilqqa The complainant is the owner of the patent of Horace Wy: man, dated in 1867, and re-issued in 1875; for an improvement in shuttle box mechanisms for looms. The specification de- scribes levers with movable fulcrums, or a compound lever, for imparting the necessary motion to the shuttle boxes. In the drawing, six boxes are represented. Each lever has its connecting rod, which is actuated by a crank-pin mounted on a shaft having a toothed wheel. These wheels are connected with toothed racks, which slide back and forth under the im- pulse of pawls which are governed by a pattern. "Each crank- pin can revolve from the upper center to the lower one inde-
 * Ante, 199.