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11. 发明专利

GB761682A Improvements in rotary magnetic transmissions 未知
公开(公告)号：GB761682A
公开(公告)日：1956-11-21
申请号：GB947054
申请日：1954-03-31
申请人： TRIST & CO LTD RONALD
发明人： CHAMBERS WILLIAM ARNOLD
IPC分类号： H01F7/14
摘要： 761,682. Electromagnetic couplings. TRIST & CO., Ltd., R. June 3, 1955 [March 31, 1954], No. 9470/54. Class 35. A magnetic clutch comprises a rotating permanent magnet bar 14 co-operating with and partitioned from a rotating ring 24 of magnetic material, e.g. mild steel having two diametrically opposed salient poles 26. The magnet 14 is mounted on a carrier 16 having at one end a recess engaging a needle bearing 18 and at the other end a shaft 20 journalled in a plug 6. The latter fits into the open end of the hollow cylindrical partition 2. The ring 24 is supported on a carrier 28 having a hub 30 rotatable on a stub shaft 32 projecting from the partition 2. The ring speed can be determined by providing therein two permanent magnet inserts 38 which, when rotated with the ring 24, generates an A.C. voltage in a winding mounted on a fixed core 34.

12. 发明专利

GB723905A Improvements in photo-electric detecting apparatus 未知
公开(公告)号：GB723905A
公开(公告)日：1955-02-16
申请号：GB465152
申请日：1953-01-28
申请人： TRIST & CO LTD RONALD
发明人： CLARKE ALFRED GORDON
IPC分类号： G01J1/16 , G08B17/103 , G08B17/107
摘要： 723,905. Photo-electric smoke detectors. TRIST & CO., Ltd., R. Jan. 28, 1953 [Feb. 21, 1952], No. 4651/52. Class 40 (3). In a balanced photo-electric cell arrangement which may be used for smoke detection and in which an electrical signal indicative of the condition to be detected operates a warning device, spurious signals produced by changes in the values of components, dirt on lenses, &c., are eliminated by a device responsive to signals below the minimum level to which the warning device is required to respond and serving to adjust the balance of the system so as to cancel out the spurious signals. In the smoke detecting system shown in Fig. 1 light from a source 3 passes direct to a reference cell 1 and across a space to be guarded to a cell 2. The two cells form arms of a combined bridge and amplifier circuit 6 which energizes a polarized relay 7 according to the direction of the unbalance. Smoke in the beam closes contacts 8, 10 to energize a warning relay 28. Periodically constantly rotating cams 22, 25, 13, 30 disconnect this warning relay, increase the sensitivity of relay 7 by removing a shunt 11 and close contacts in series with relays 14, 23. Any unbalance below the normal level to which relay 28 will respond now closes one pair of contacts of relay 7, energizing one of relays 14, 23 to drive a permanent magnet field motor 17. The motor through reduction gearing inserts an optical wedge 33 into the radiation path, and rebalances the system. Continued rotation of the cams disconnects relays 14, 23 and reduces the sensitivity of relay 7 and re-connects warning relay 28. In a modification (Fig. 3, not shown) instead of positioning an optical wedge, motor 17 may adjust the angular position of a drum, part of the surface of which is silvered. This silver portion reflects light on to a balancing cell situated to one side of the beam. In the arrangement of Fig. 4 (not shown), the system is continuously rebalanced. The switch cams are omitted and a less sensitive relay is provided in series with polarized relay 7 to operate a warning device. The polarized relay rebalances the systems continuously as in the arrangement of Fig. 1, previously described, but the balancing motor is so geared that the rate of rebalancing is too slow to cancel out the genuine signal due to smoke &c.

13. 发明专利

FR1073488A 未知
公开(公告)号：FR1073488A
公开(公告)日：1954-09-27
申请号：FR1073488D
申请日：1953-01-06
申请人： TRIST & CO LTD RONALD
IPC分类号： G05D9/12

14. 发明专利

GB703210A Improvements relating to apparatus for controlling the movement of one member in accordance with the movement of another 未知
公开(公告)号：GB703210A
公开(公告)日：1954-01-27
申请号：GB50952
申请日：1952-01-07
申请人： TRIST & CO LTD RONALD
发明人： THOMAS HERBERT BERNARD
IPC分类号： F22D5/10 , G05D9/04
摘要： 703,210. Fluid-pressure servomotor-control systems. TRIST & CO., Ltd., R. Dec. 31, 1952 [Jan. 7, 1952, No. 509/52. Class 135. [Also in Groups XXXV and XXXVIII] A relay device comprising controlling and controlled members, two relay parts moved by the controlling and, controlled, members, respectively, and change in the relative position of the two. parts causing movement of the controlled member and, hence, of the part connected thereto in the direction, to restore the initial relative position of the two parts, is characterized in that the part moved' by the controlled member is a carriage for means through which the movement of the controlled member is controlled, and which is actuated magnetically by the part moved by the controlling member. As applied to a boiler feed-water control, the steam and water spaces of. the boiler 2 communicate with a subsidiary chamber containing a float 20. The stem of the latter carries two permanent magnets. 24 which, as the float moves up or down from a neutral position relative to two pivoted permanent magnets 38, 39, causes one or other of the latter. to snap over into its. other limiting position. Each of the magnets 38, 39 actuates a switch controlling separate electromagnets 56 1 , 58 1 and the armatures of these electromagnets carry lift valves 56, 58, respectively. When valve 56 is raised, it allows a hydraulic or pneumatic pressure supply 62 to flow to exhaust at 64, but when the valve is closed, the pressure builds up and opens: a valve 66 and the supply flows to a singleacting piston 52 which actuates a valve 10 controlling the flow of feed water to the boiler. Valve 58, when opened, allows the fluid in the cylinder containing piston 52 to flow to exhaust. The movement of valve. 10 is fed back through a lever 46, cable 44, and a lever 42 with an adjustable fulcrum, to a frame 26 which carries the magnets 38; 39 with their associated switches and which slides on the tube 18 of non-magnetic material surrounding the magnets 24. In the: operation of this particular construction, valve 10 moves with a step-by-step motion the cessation of each movement corresponding to the frame 26 occupying a neutral position relative to the magnets 24. The two magnets 38, 39 may be replaced by a single magnet, but this will eliminate the neutral position and cause the valve 10 to hunt. The apparatus is applicable to controlling the supply of sugar juice to an evaporator.

15. 发明专利

GB688402A Improvements relating to magnetic devices 未知
公开(公告)号：GB688402A
公开(公告)日：1953-03-04
申请号：GB1642150
申请日：1950-06-30
申请人： TRIST & CO LTD RONALD
发明人： NEWBOULT HENRY GRATTAN
IPC分类号： H01F7/02
摘要： 688,402. Magnetic switches. TRIST & CO., Ltd., R. Oct. 1, 1951 [June 30, 1950], No. 16421/50. Class 38 (v) [Also in Groups XXIX and XXXV] In a magnetic coupling device wherein movement of one magnet effects the movement of another by magnetic attraction or repulsion each magnet is mounted in a tube such as 1 or 14 and held therein by magnetic attraction between the magnet and the tube or an element such as 15 or 21 inside the tube. The invention is shown applied to an arrangement similar to that disclosed in Specification 679,308. Movement of a pivoted magnet 2 operates magnets 12, 13 about their pivot 7, the magnet 13 operating in turn by repulsion a pivoted magnet 17 which operates a switch. The elements 15, 21 receive the pivot pins, holes for the latter not being readily borable in the hard material of the magnets. In the case of the magnet 17 two pivot pins engage holes in the tube 20.

16. 发明专利

FR1012247A 未知
公开(公告)号：FR1012247A
公开(公告)日：1952-07-07
申请号：FR1012247D
申请日：1950-02-08
申请人： TRIST & CO LTD RONALD
IPC分类号： F22D5/08 , G01F23/32

17. 发明专利

CH281916A Dispositif détecteur à au moins une cellule photo-électrique. 未知
公开(公告)号：CH281916A
公开(公告)日：1952-03-31
申请号：CH281916D
申请日：1950-03-14
申请人： TRIST & CO LTD RONALD
发明人： CO LIMITED RONALD TRIST
IPC分类号： H01J40/14

18. 发明专利

GB664189A Improvements relating to valves 未知
公开(公告)号：GB664189A
公开(公告)日：1952-01-02
申请号：GB416649
申请日：1949-02-15
申请人： TRIST & CO LTD RONALD , HERBERT BERNARD THOMAS
摘要： 664,189. Valves; fluid-pressure servomotor control systems. TRIST & CO., Ltd., R., and THOMAS, H. B. Jan. 19, 1950 [Feb. 15, 1949], No. 4166/49. Class 135. A valve for controlling the flow of fuel gas to heat a boiler comprises a ported plate 16 situated at the end of a gas passage and adjustable in position to vary the datum point by means of a pull-rod 42, and a disc 22 rotatable over the plate 16 to control the flow of fuel, the disc 22 being connected to and under the control of a Bourdon tube 34 communicating with the interior of the boiler. As shown, the Bourdon tube is situated in a chamber inserted in the gas supply line 8, 10, and the movable end of the Bourdon tube is connected by a link 30 to the disc 22. Plate 16 and disc 22 are pivoted on a common pin and are urged by a spring against the base-plate. The valve might control the flow through a bye-pass acting on the actuating diaphragm of a valve controlling the main gas supply to the boiler.

19. 发明专利

GB622850A Improvements relating to stuffing boxes or glands 未知
公开(公告)号：GB622850A
公开(公告)日：1949-05-09
申请号：GB648647
申请日：1947-03-07
申请人： TRIST & CO LTD RONALD , ALEXANDER CUMMING MCLACHLAN
IPC分类号： F16J15/20
摘要： 622,850. Stuffing-boxes. TRIST & CO., Ltd., R., and McLACHLAN, A. C. March 7, 1947, No. 6486. Drawings to Specification. [Class 122(v)] A stuffing-box for a rotary shaft is packed by one or more axially split cup leather packing rings which fit closely around the shaft but are of such external diameter that when placed in the box they do not contact the wall of the box, but are expanded into contact with the box by axial pressure. A soft impregnated packing is interposed between the end rings and the housing and the gland.

20. 发明专利

GB602746A Improvements in oil and like seals 未知
公开(公告)号：GB602746A
公开(公告)日：1948-06-02
申请号：GB1405745
申请日：1945-06-04
申请人： TRIST & CO LTD RONALD , LEONARD BOMYER
IPC分类号： F16J15/32
摘要： 602,746. Oil seals. TRIST & CO., Ltd., R., and BOMYER, L. June 4, 1945, No. 14057. [Class 122 (v)] An oil seal comprises a rubber sealing ring 2, a rubber backing ring 4 of greater resilience, deformed when the seal is applied to the shaft 5, and a rigid dished ring 9 to pre-deform the sealing ring. In an alternative construction the ring 9 is omitted. As shown in Fig. 3 the backing ring 4 is originally flat and there may be one on each side of the sealing ring 2. The seal may be double comprising two sealing rings extending away from one another and two backing rings, with or without two deforming rigid rings. Specification 602,792 is referred to.

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