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1. 发明专利

CA9886S ELECTRIC LAMP 未知
公开(公告)号：CA9886S
公开(公告)日：1933-02-21
申请号：CA9886
申请人： HARRY FORD , LOUIS ALFRED RAMSDEN

2. 发明专利

DE653486C 未知
公开(公告)号：DE653486C
公开(公告)日：1937-11-25
申请号：DER0088047
申请日：1933-05-31
申请人： LOUIS ALFRED RAMSDEN , HARRY FORD
IPC分类号： F16H61/02 , H01H50/88

3. 发明专利

AU2509330B Improvements in electrical illuminating apparatus 未知
公开(公告)号：AU2509330B
公开(公告)日：1931-02-19
申请号：AU2509330
申请日：1931-02-11
申请人： LOUIS ALFRED RAMSDEN
发明人： LOUIS ALFRED RAMSDEN
IPC分类号： G09F19/20 , H01H19/12 , H01H19/54 , H01H67/06

4. 发明专利

GB401390A Improvements in electro-magnetically-operable electric switches 未知
公开(公告)号：GB401390A
公开(公告)日：1933-11-16
申请号：GB1558432
申请日：1932-06-02
申请人： LOUIS ALFRED RAMSDEN
IPC分类号： F16H61/02 , H01H50/88
摘要： 401,390. Electromagnetic interrupters. RAMSDEN, L. A., 80, St. Ives Road, Platt Lane, Rusholme, Manchester. June 2, 1932, No. 15584. [Class 38 (v).] An electromagnetic interrupter has a spring- operated contact member arranged to energise alternately two operating electromagnets or solenoids, to operate a contact lever or switch arm the speed of movement of the contact lever or switch arm being controlled by an escapement mechanism, adjustable fixed contacts being provided to vary the duration of travel of the contact lever. As shown in Fig. 1 the solenoids B, B are energised alternately by the movements of a spring-operated contact-member a which oscillates between relatively fixed contacts a , a . The movement of the contact member is effected through a reciprocating core b having a pin b engaging a slot d in a pivoted arm D which bears a pin d engaging a slot a in a lever A pivoted at a . The outer end of the lever A is connected by a dead-centre spring a to a pin and lever A also pivoted at a and carrying at its free end the movable contact a . The lever A is connected by a link c and gearing c ... c to an escapement c . On energisation of an electromagnet B the core b is attracted and the consequent swinging over of lever D brings the spring a across the dead-centre position. The contact a is moved slowly across towards the other fixed contact under the control of the escapement, its engagement therewith serving to complete the circuit of the other electromagnet B and thus to initiate a succeeding operating cycle. The oscillation of the lever D may be utilised to operate controlled circuits by means of pins d (Fig. 7), which engage and step round a star wheel D driving around cams F, F (Fig. 8), these cams being arranged to operate rollers g carried by pivoted cams g to which are attached spring contact blades G co-operating with fixed contacts 6. A spring detent e engaging the pin d holds the lever D in its displaced positions. The fixed contacts a are carried on an insulated plate A adapted to be adjusted by a screw a to vary the frequency of operation of the interrupter by increasing or decreasing the distance of travel of the movable contact a under the control of the escapement retarding device.

5. 发明专利

DE574856C 未知
公开(公告)号：DE574856C
公开(公告)日：1933-04-25
申请号：DE574856D
申请日：1930-01-15
申请人： LOUIS ALFRED RAMSDEN
IPC分类号： H05B37/02

6. 发明专利

GB348258A Improvements in multiple-way electric controllers or switches 未知
公开(公告)号：GB348258A
公开(公告)日：1931-05-14
申请号：GB663630
申请日：1930-02-28
申请人： LOUIS ALFRED RAMSDEN
IPC分类号： H05B37/02
摘要： 348,258. Regulating switches. RAMSDEN, L. A., 75, North Street, Cheetham, Manchester. Feb. 28, 1930, No. 6636. [Class 38 (v).] A switch comprises an insulating drum A having on its circumference a number of metal strips C which short-circuit contact arms B which are arranged in groups, adjacent arms in adjacent groups being connected together at b . The strips C are so arranged that a predetermined number of the arms B are always short-circuited in all positions of the drum. Fig. 4 shows an arrangement for raising and lowering the arms B in any one group independently of the remaining groups ; Cams d are mounted on loose sleeves D on a shaft D which sleeves when rotated by a knob D4 cause the cams to raise the arms B out of contact with the drum. Fig. 5 shows a modification in which the drum is provided with metal strips C . . C arranged in groups both longitudinally and circumferentially whereby the external circuits can be joined in series or parallel. Contact makers B are arranged on a terminal block B and current is led to the various groups through the circumferential conductors C . A second terminal block F carries contacts F which are connected by bars f to provide a path for the current to the circumferential strips C , C . The switch may be used for obtaining colour effects as described in Specification 328,201, [Class 38 (v), Electric switches &c.].

7. 发明专利

GB328201A Improvements in electrical illuminating apparatus 未知
公开(公告)号：GB328201A
公开(公告)日：1930-04-16
申请号：GB150929
申请日：1929-01-16
申请人： LOUIS ALFRED RAMSDEN
IPC分类号： F21S8/00 , G09F13/00
摘要： 328,201. Ramsden, L. A. Jan. 16, 1929. Supplying and controlling consuming devices.- Varying effects are obtained with clear or coloured lamps. Each lamp has a single filament connected at intervals to separate contacts and the lamps are connected in series. A controller is arranged to apply the supply pressure to a selected and variable portion of the series of filament sections so that dimming, flashing and gradual colour change effects may be obtained. Alternatively the series connected lamps may be connected across the supply circuit and a controller may short-circuit a varying portion of the series of filament sections. Fig. 8 to 11 show a globular lamp and its holder an insulating peg n in the latter co-operating with a recess in the lamp cap to correctly position the lamp and lamp-holder contacts. Fig. 13 shows a tubular lamp and a holder comprising a spring contact n for engagement with each filament tapping. Each lamp comprises a single filament with connections to external contacts at equidistant parts of the filament. The controller shown in Fig. 1 comprises contacts in a ring, each in turn connected to a filament tapping in the series circuit of lamps L - - L . The supply circuit is connected through a switch B to contact A , A and contact-arms A , A coupled by an adjustable device A may be rotated simultaneously to illuminate different sections of series of filaments. The lamps may be variously coloured thus enabling different colour combinations to be obtained. The angle between the arms A , A may be changed to give dimming or flashing effects. A switch C is provided to con. nect the ends of the filament series when required The controller shown in Figs. 5 to 7 and developed in Fig. 4 comprises a rotatable drum of insulating material D carrying conducting bars, of varying length and variable as to their arrangement, adapted to co-operate with contact springs D connected to the filament tappings to short-circuit different portions of the filaments, which are in series between the supply conductors a , a , Fig. 4, so that varying colour combinations may be obtained as the drum D is rotated according to the disposition of the conducting bars. Beneath the spring contacts lie regulators H separately rotatable on a shaft H by means of worms engaging toothed quadrants on the regulators. The regulators have raised circumferential strips of varying lengths each adapted to lift a contact strip so that dimming effects may be obtained. Rapid rotation of the drum D may produce flashing effects.

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