Textile Machinery; Cotton Mill Equipment (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ... for changing cans, cleaning, oiling, and stopping. This table is figured for frames made up of four delivery heads. An additional ten per cent should be deducted for frames of six delivery heads. EVENER DRAWING FRAMES Evener Drawing Frame S originally used in connection with the old-style cards, the functions of the railway head were: To take up a number of slivers directly from a line of cards, draw them to a single sliver of a given weight, and place the product in a can for convenient use on subsequent process. In case one or more slivers should break down at the cards, the evening mechanism operated to reduce the speed of the front roll, and when the slivers were again pierced up, operated in the reverse direction, increasing the speed of front roll again to compensate for the change in amount of stock fed into the rolls at back. The card doffers and railway head being driven from the same shaft, the relative speeds were of necessity maintained to enable the railway to take up the slivers at the rate given off by the doffers. Thus the back rolls were not available as eveners, and the evening mechanism had to operate through the front roll. Many experienced mill men have such a high opinion of the railway head that they employ it in connection with the modern revolving flat card, taking up the slivers from the card cans, instead of from the old card trough or apron. Practically all that was necessary to adapt the old-style railway head to take the slivers from the cans was to add a back-stop motion and sliver guides, the same as on a drawing frame. Although there has been a steady demand for this re-adapted old railway head, it has been apparent that a machine much better suited to modern requirements could be designed, and we have now placed on the mar...