(359) The taking-in or scroll shaft is operated from the rod =R=, which is fitted with one spring only at its back end. This is compressed by the intervention of a second lever, fastened on the same shaft on which the rocking lever =T= oscillates, the compression taking place during the outward run of the carriage. The spring is held in compression by a latch =P=, which engages with a lug on the rod =R=. When the carriage runs in, a boss on the faller shaft releases the latch, and the extension of the spring disengages the taking-in friction clutch. The latter is put into gear by the locking of the faller in the ordinary manner, and is held in gear until the latches =O= and =P= are tripped in the manner described. The spring =R= presses on a collar carried by the lever =H=, and the releasing of the friction is aided by the lever =L=, which comes against the head of =H= when the spring =M^{ 2}= is extended. The levers =H= and =L= are so arranged that they cannot both act together, so that the two motions of taking-in and drawing-out cannot be in action at the same time.
(360) The angle of the spindle relatively to the vertical line is such as is necessary to suit the material being spun, but there is another feature which it is necessary to mention. As the point of the spindle moves in a horizontal plane, it is obvious that the yarn will pass on to it from the rollers at an angle varying with its distance from them. That is to say, the angle formed by the yarn, in passing on to the spindle, will be more acute when the carriage is near to the rollers than it will be when it is further away. This has a little influence upon the problem of spinning, and an arrangement exhibited at the Manchester Jubilee Exhibition, applied to Messrs. Asa Lees and Co.’s mule, is shown in Fig. 184. In this case there are two carriage slips instead of only one, and these are inclined so as to compensate for the difference in angle. On one of the slips =A= the front carriage runner =D= travels, and on the other the back one =C=. The result is that the inclination of the spindles is slowly altered, with the result that the angle formed by the yarn and the spindle in each case, is nearly the same in all positions. This device worked well, but the difficulty existing does not appear to be great enough to lead to any wide adoption of it.