Page:Federal Reporter, 1st Series, Volume 9.djvu/773

 758 FEDERAL REPORTER. ; �weaving cloth. A "take-up" is a deviee for taking up or rolling the completed fabric upon an intermittingly-moving roller or cloth-beam. The improvement consisted in the arrangement of meohanism fpr regulating the tension of the cloth. The patented mechanism is described as follows: A ratohet-wheel is so connected with the cloth- beam that a movement of the wheel necessitates a revolution of the beam. This revolution imparts tension to the fabric. Mounted on the axis of this wheel there is an oscillating pawl- carrier, upon which is pivoted a pawl which engages with the teeth of the ratchet-wheel. Motion is imparted to the pawl and its carrier by means of a rod, one end of which is secured to the pawl-oarrier. The other end rests loosely in a sliding collar. Motion is imparted to the collar by the crank which turns the "lay," or "the wooden frame beam which forces up the weft." The intermediate meohanism between the crank and the collar is the leg of the lay and a pitman. �"Upon the rod and surrounding it there is a spiral spring, one end of which beats against the reoiprocating sliding collar, and the other end of which bears against an adjustable collar on the rod, which collar is termed a stop-nut in the patent. This collar or stop-nut eau be adjusted longitudinally on the rod, so as to compress the spring more or less, and iiicrease or diminish its tension as may be desired." �The operation of the mechanism is thus described in the specifica- tion of the reissue : �" It is obvioue that when a reciprocating motion is given to the sliding col- lar, m, the degree of compression of the spring, and the consequent extent of motion of the pawl and the ratchet-wheel, will depend upon the resistance or tension of the fabric. Thus, if the cloth is slack, the spring will be but slightly, if at all, affected by the movement of the sliding collar, m, the strength of the spring being sufflcient to move the pawl, and revolve the ratchet-wlieel and take up the fabric, in which case the collar, m, will luove with the rod, L, and not slide on it; but when there is suflicient tension on the cloth to over- come the power of the spring, the collar will slide on the rod and expend its blow or pressure in compressing the spring, and will not throw the pawl or move the ratchet." �In the language of the plaintifs expert— �" The collar reciprocates positively over a given distance, while the movement of the rod, the pawl-carrier, the ratchet-wheel, and the cloth-beam will vary fiera time to time, according to the tension of the fabric and the resistance which is oiiered thereby to the motion of the beam which takes up the fabric." �The original claim was in these words : ��� �