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1. 发明专利

GB435053A Improvement of optical apparatus for lighthouses 未知
公开(公告)号：GB435053A
公开(公告)日：1935-09-13
申请号：GB866334
申请日：1934-03-20
申请人： CHARLES ALEXANDER STEVENSON , DAVID ALAN STEVENSON
IPC分类号： F21V14/00
摘要： 435,053. Rotating projection-apparatus. STEVENSON, C. A., Radella, Fidra Road, North Berwick, and STEVENSON, D. A., 22, Glencairn Crescent, Edinburgh. March 20, 1934, No. 8663. [Class 75 (iv)] In a lighthouse with rotating projection apparatus for emitting flashes in groups, an illuminant F and two or more lightconcentrating reflectors M, or two or more illuminants and a light-concentrating reflector, are arranged so that the reflector or at least one of the reflectors is set with its focal axis passing to the side of the illuminant or illuminants so that the light beam or each light beam is reflected at an angle in the horizontal plane to the axis of the reflector. This causes the angle alpha between successive beams B of a group to be smaller than it would otherwise be, and so increases the ratio between alpha and #, the angle between successive groups. Specification 414,062 is referred to.

2. 发明专利

GB281972A Improvement on wireless distance finding apparatus 未知
公开(公告)号：GB281972A
公开(公告)日：1927-12-15
申请号：GB1963127
申请日：1927-06-02
申请人： CHARLES ALEXANDER STEVENSON , DAVID ALAN STEVENSON
IPC分类号： G01S11/16
摘要： 281,972. Stevenson, C. A., and Stevenson, D. A. June 2, 1927. Drawings to Specification. Distances, determining.-A wireless telephony transmitter is arranged close to, but is not otherwise coupled with, an audible fog signal, the microphone being operated by the emitted note. Modulated wireless signals are accordingly radiated simultaneously with the sound waves, and the distance of a ship can be estimated from the interval between the receipt of the audible note and the wireless signal. A stop-watch suitably graduated in nautical miles and cables and regulated to the velocity of sound-waves in air, or any other known method of co-ordinating the time interval with distance, may be used to facilitate the observation. The characteristic note of the original fog signal is preserved, a feature that assists the mariner in ascertaining his exact location.

3. 发明专利

FR421719A 未知
公开(公告)号：FR421719A
公开(公告)日：1911-03-03
申请号：FR421719D
申请日：1910-10-22
申请人： JOHN MOYES , CHARLES ALEXANDER STEVENSON
发明人： MOYES JOHN , STEVENSON CHARLES ALEXANDER
IPC分类号： G08B7/06

4. 发明专利

GB538066A Improvements in or relating to pyrometers and other measuring instruments of precision 未知
公开(公告)号：GB538066A
公开(公告)日：1941-07-18
申请号：GB234440
申请日：1940-02-07
申请人： HORACE ALEXANDER STEVENSON
IPC分类号： G01J5/48
摘要： 538,066. Indicating-apparatus. STEVENSON, H. A. Feb. 7, 1940, No. 2344. [Class 106 (iv)] A pyrometer device comprises a casing 1 in which a pyrometer 3 is housed so that the scale 4 is viewed at the front wall of the casing, a light source 13 at the rear of the case, and a mirror 5 on the pointer axis of the pyrometer galvanometer from which a pencil of light from the source 13 is reflected on to a second mirror 19 at the rear and from thence to a magnified " light scale " at the front of the casing. Both the rear mirror and the source of light are adjustably mounted in the casing while the ight scale is divided into a lower ground glass part 10 on which an illuminated arrow appears and an upper graduated and illuminated part 8.

5. 发明专利

DE547099C 未知
公开(公告)号：DE547099C
公开(公告)日：1932-03-31
申请号：DE547099D
申请日：1930-06-13
申请人： CHARLES ALEXANDER STEVENSON , DAVID ALAN STEVENSON
IPC分类号： G01S11/16

6. 发明专利

GB334927A Improvements in signalling apparatus for use in connection with marine and aerial navgation 未知
公开(公告)号：GB334927A
公开(公告)日：1930-09-15
申请号：GB1483129
申请日：1929-06-13
申请人： CHARLES ALEXANDER STEVENSON , DAVID ALAN STEVENSON
IPC分类号： G01S11/16
摘要： 334,927. Stevenson, C. A., and Stevenson, D. A. June 13, 1929. Locating sounds. - Wireless signals from a transmitter T, and sound signals from a fog-horn H, or light signals, are produced simultaneously, the transmitter T being so modulated by the currents from a gramophone pick-up P, actuated by a record X, as to broadcast at intervals between the production of the signals, and in synchronism therewith, speech or other signals indicating the name of the transmitting station and/or its distance or direction with respect to the receiving station. The timing-wheel S, driven by an air-turbine from the air supply to the fog-horn, or otherwise (as is also the gramophone turntable) carries cams C, C for actuating the valve controlling the horn H, and a cam G which operates contacts K, K to set the gramophone in operation. Contacts K, K close the circuits of electro-magnets E , E , the former operating a clutch which couples a stationary turntable X to a moving turntable Xa, and the latter attracting the armature R which lifts the track U, and raises the roller V and the pick-up P, returning the latter to the edge of the turntable, on to which it is lowered when the contacts K, K open. The pick-up P is in series with a microphone M energized by sound from the horn H, and a note-magnifier A feeding the transmitter T. The operation of the system is as follows :-Just previous to the three blasts of the horn produced by cams C, the gramophone announces the name of the station and/or the code signal. Then the three blasts are picked up by the microphone and broadcast, and immediately the gramophone starts counting out miles and cables in speech, the timing being determined by the rate of travel of sound in air. On hearing the sound of the horn directly, the observer notes the count received by wireless and is thus given his distance. Other sound records may be substituted for the disc shown, other horn signals may be substituted for those already described, and the microphone M may be omitted. Specification 281,972 is referred to.

7. 发明专利

GB319870A Improvements on road rollers 未知
公开(公告)号：GB319870A
公开(公告)日：1929-10-03
申请号：GB2165728
申请日：1928-07-26
申请人： CHARLES ALEXANDER STEVENSON
IPC分类号： E01C19/26
摘要： 319,870. Stevenson, C. A. July 26, 1928. Rollers, road.-The front or steering roller is made of two or more parts arranged. en echelon on separate axles set about 18 inches or two feet apart but on the same steering frame. This arrangement is stated to diminish or eliminate waves or corrugations on the road surface due to heavy traffic after rolling. The Provisional Specification states that the distance between the axles may be " the distance from the crest of the corrugation to the hollow of the corrugation or such other distance as is found suitable."

8. 发明专利

GB175043A An improved signalling apparatus 未知
公开(公告)号：GB175043A
公开(公告)日：1922-02-06
申请号：GB3142920
申请日：1920-11-06
申请人： CHARLES ALEXANDER STEVENSON , JOHN MOYES
IPC分类号： G08B3/14
摘要： 175,043. Stevenson, C. A., and Moyes, J. Nov. 6,1920. Fluid - actuated valves.-The valves of an air pump used to give an intermittent supply of air to a gasexplosion signalling device are positively operated with a quick throw-over movement by means controlled by the reciprocating member of an occulting device of ordinary type used to give an intermittent supply of gas to the signalling device. Adjustable tappets on a rod (not shown) reciprocated by the occulting device, serve to oscillate a shaft 58 actuating the valves in a chamber E. Chamber- E has two compartments 54, 56 communicating through a port 81 controlled by a valve 75, and has ports 78, 79, 80. Port 79 communicates with the pump. Port 80 communicates with the signalling device. Port 78 opens to atmosphere and is controlled by valve 74. Valves 74, 75 are opened alternately by an oscillating member 62 pivoted at 59 and given a quick throw-over movement. A member 61 secured to the shaft 58 haspins 67 adapted to engage pins 64 on a member 60 loosely mounted on shaft 58 by a slot connection allowing a limited vertical movement. A spring (not shown) tends to raise member 60, but when this member is rocked by member 61 it isdepressed as a projection 65 rides under a fixed adjustable stud 84, and then rises under the action of the spring. The side of a triangular opening 66 in member 60 engages a pin 82 secured to member 62, which is thereby moved over a dead-centre, and given a quick completion of this movement by an adjustable spring 85, thusquickly closing one of the valves 74, 75 and opening the other. In operation, air is drawn into the pump through ports 78, 79, and is then forced' to the signalling device through ports 79, 81, 80.

9. 发明专利

GB151489A Improvements in or relating to coal-cutting machines 未知
公开(公告)号：GB151489A
公开(公告)日：1920-09-30
申请号：GB2587919
申请日：1919-10-22
申请人： ALEXANDER STEVENSON , ARTHUR LOGAN
IPC分类号： E21C29/10
摘要： 151,489. Stevenson, A., and Logan, A. Oct. 22,1919. Coal-cutting machines.-In haulage gear for coal-cutting machines of the jib type wherein a motor 1 drives a winch drum 14 through a train of gearing 6, crank 10, link 11, rocking arm 12, a pawl 15, and ratchet-wheel 16, and an adjustable mask 19 controls the period of engagement of the pawl 15, bevel-gearing 5, 6 is provided between the motor and crank. When the mask throws the pawl 15 out of action, a projection 20 thereon also disengages the check pawl 17. By the aid of guide pulleys 23, the winch cable may be passed in any direction.

10. 发明专利

AU539317B A cane chipper and cultivator 未知
公开(公告)号：AU539317B
公开(公告)日：1918-08-20
申请号：AU539317
申请日：1917-10-08
申请人： I JOHN CLARENCE BURGESS ALEXANDER STEVENSON
发明人： I JOHN CLARENCE BURGESS ALEXANDER STEVENSON

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