Patent GB-190611714-A (GB)
Title: Improvements in Multiplier Mechanism for Change-box Motions for Looms.
Inventor: WOOD ALBERT EDWARD
Filed: 1906-05-19
Granted: 1907-02-14
Abstract: 11,714. Wood, A. E., [Crompton & Knowles Loom Works]. May 19. Loom change-box motions; pattern chains and surfaces.-Multiplier mechanism is provided whereby any bar of the shuttle-box pattern-chain 5 may be repeated without the use of successive similar bars. The multiplier pattern surface consists of a drum 16 with helically - arranged holes, into which pattern pins 161 are inserted as desired. The drum is splined on a sleeve 17, so as to rotate therewith and be free to slide thereon, the sleeve being loosely mounted on the shaft 3 of the harness pattern barrel 2. The shuttle-box pattern barrel 4 is also loosely mounted on the shaft 3, and the chain 5 is made up of bars linked together and carrying rolls and tubes in the ordinary way. The barrel 4 and the sleeve 17 have attached star-wheels 6, 18 adapted to be rotated by pins on wheels 7, 19, which are splined to a driven shaft 8, so as to rotate therewith and slide thereon. The wheels 7, 19 have annular grooves engaged by levers 10, 20 on sliding shafts 11, 21, of which the positions are controlled by angle-levers 12, 22, pivoted at opposite ends of a fixed shaft 13. The levers 12, 22 are connected by links 14, 23 to pivoted levers 15, 24, which are adapted to be raised by a pin 16<1> on the drum 16 and a roller 5<1> on the chain 5 respectively against the action of springs 12", 26, to put the respective pin-wheels 7, 19 into operation as required. The drum 16 is gradually moved along its sleeve 17 to the left by means of a worm 30, which is geared to the sleeve and normally is engaged by the end of an arm extending downwards from a ring 35, which is loosely mounted in an annular groove in the drum. The arm is connected by a link to a lever 33, which is slidably mounted on a rockshaft 31 and has a recessed projection engaged by an extension on the ring 35. The worm 30 is loosely mounted in the shaft 8 but is prevented from moving along it. When the drum reaches the left end of the sleeve as shown, an extralong pin on the drum acts upon a lever 36 on the shaft 31, so that, through the lever 33 and the link, the arm on the ring 35 is disengaged from the room. At the same time, the end of a lever 44 on the shaft 31 moves a pin on the end of a pivoted lever 40 into a cam-groove in a collar 43 on the shaft 8, so that a lever 37, which is suitably connected to the lever 40 and has a pin engaging an annular groove 16<b1> at the end of the drum, moves the drum to the right along its sleeve into its initial position. When the lever 44 is moved, the end 49<11> of a lever, which is pivoted on an extension 44<a> of the lever 44, is moved between the end of the shaft 11 and the end 46<11> of a centrally-pivoted lever rocked by a cam-groove in a second collar on the shaft 8, so that the end 49<11> of the lever is moved by the lever-end 46<11> against the action of a spring, and in turn slides the shaft 11 to put the pin-wheel 7 into action, and cause the pattern barrel 4 to be rotated. When the drum has been moved to its initial position, the arm on the ring 35 again engages the worm, and the sequence of operations is repeated.