| 摘要 |
1,070,470. Winding webs. HONEYWELL Inc. Nov. 25, 1963 [Nov. 27, 1962], No. 46481/63. Heading B6B. [Also in Division G1] Take-up mechanism for the record paper or film 9 of an oscillographic recorder comprises an idler roller 8 sensing the tension in a web of paper 9 being taken up by a spool 12 and linkage 6, 624, 13 amplifying the movement of the roller 8 mounted on link 6 to cause a control pulley 4 mounted on link 13 to vary its pressure on the slack side of a belt 11 and thus to maintain the tension in the paper 9 constant by controlling the driving torque applied through the belt 11, by a driving drum 2 to a pulley 10 mounted on spool 12. The roller 8 and pulley 4 are urged against the paper 9 and belt 11, respectively, by a spring 7, whose tension can be adjusted to vary this bias. The belt 11 may be composed of woven glass fibres impregnated with nylon or it may be woven nylon. The belt is trained over the smooth outer surface of drum 2, conveniently made of stainless steel and co-operates therewith to form a slipping clutch. The amount of the belt 11 in contact with the drum 2 may be increased by the use of an idler roller 15 and the angle the paper 9 takes as it leaves roller 8 can be held constant by the use of another idler roller 14. |
