Improvements in the Presser Rollers of Drawing and Roving Frames or similar Machines for Preparing Flax, Hemp, Jute and other Fibres for Spinning

摘要

7643. Fraser, J., Fraser, P., and Fraser, N. April 2. Rollers and roller heads.-Relates to the presser rollers of drawing and roving frames &c., for preparing flax, hemp, jute, &c. for spinning. The leather covering A, built up of sections A', fits on the tapered periphery B1 of the flanged disc B2. Pointed pins C1 on the flange B3 and cover C, which is screwed up by a bolt C2, are forced into the leather, which is thus secured tightly. In a modification, applicable to broader rollers, transverse grooves or preferably dovetail recesses D', Fig. 3, are formed in the inside surface of each section of the ring A and also in the periphery B', which is made without taper. Type metal or other cement is run into these grooves &c. and the cover screwed on as before. In other modifications, a groove is also left between the leather and the periphery B1, and this is also filled with cement &c. Leather rings can be fixed to separate iron cylinders by the methods described and the combinations used as replacements. Or separate cylinder parts G, Fig. 7, formed of type metal may be used and are preferably cast between the leather covering A and a taper mandril, having the same taper as the boss B'.