baber/WOPTO huggingface dataset:
Patent GB-501586-A (GB)
Title: Improvements in or relating to photographic cameras incorporating photoelectric exposure meters
IPC: G03B7/04
Filed: 1937-08-23
Abstract: 501,586. Photographic cameras with exposure meters. ZEISS IKON AKT.-GES. Aug. 23, 1937, No. 23076. Convention date, Aug. 21, 1936. [Class 98 (i)] In a camera incorporating an exposure meter the controlling resistance of which is adjusted by movements of the lens diaphragm and shutter spool adjusting members, each of which operates over scale of equally-spaced divisions representing equal effects on the exposure time, the speed adjustment member is connected to the resistance and the diaphragm adjustment member to the sliding contact, or vice versa, and transmission gears are provided between the speed adjusting momber and the speed setting mechanism, and between the diaphragm adjusting member and the diaphragm setting mechanism so that equal relative movements of the resistance and slider may be produced by both controls when moved through one scale division.' In the construction shown, the resistance 1 and its sliding contact 10 are carried in the mounting of an exchangeable lens. The plate 2 on which the resistance is mounted carries a pin 3 engaging the speed adjustment lever 4 which operates the speed-adjusting ring 9 through gears 5 ... 8. The slider 10 is carried by a ring 13 connected by a claw coupling 12 to the diaphragm adjusting ring 11, which operates the diaphragm leaf ring 21 through gears 14-17 and a ring 18 coupled to the ring 21 by a pin 20. In a modification the resistance and sliding contact are carried on the camera body, the resistance being directly mounted on the speed adjustment lever, and the sliding contact being mounted on a ring driven through a claw coupling as in the first embodiment.
Patent GB-778890-A (GB)
Title: Switching circuits employing transistors
IPC: H03K19/082
Filed: 1955-08-11
Abstract: 778,890. Transistor gating circuits. WESTERN ELECTRIC CO., Inc. Aug. 11, 1955 [Aug. 13, 1954], No. 23181/55. Class 40(6) In a circuit employing two transistors 2, 3 current flows in a load 7 only when control signals are applied to the base electrodes of both transistors. A further transistor 20 may be employed to maintain the circuit in its conducting state after the control signals have ceased. In the off state the bases of the transistors 2, 3 are maintained at earth potential while the emitter of transistor is held positively battery 5 to keep it in the non-conducting state. Since the emitter-collector paths are of a high resistance the potential of battery 9 is equally divided between them so that transistor 3 is also cut-off. When a signal 13 of frequency f1 is fed to the base of transistor 2 it renders the transistor conducting but due to the off state of transistor 3 no effective change is made in the circuit. A control signal 17 of frequency f2 fed to the base of transistor 3 causes it to conduct so that the combination 2, 3 has only a small resistance and current flows in resistor 7. Transistor 20 is; normally biased off by battery 22 but when transistors 2, 3, conduct, the potential drop across resistor 4 is sufficient to cause transistor 20 to conduct and the collector to pass current. The base currents of transistors 2, 3 are maintained by current flow through resistors 23, 24 even after the cessation of input signals 13, 17. The filters 18, 19 prevent operation of the circuit by spurious frequencies. The signals from sources 13, 17 may be rectified in the base circits of transistors 2. 3 since one half cycle drives the base into the cut-off region while the other half cycle causes the transistor to conduct. The circuit is reset by opening switch 25. In a modification Fig. 2 (not shown), the transistors 2, 3 are replaced by a single composite type. An output signal may be derived from resistors 4 or 6.
Patent GB-930366-A (GB)
Title: Stereophonic pick-up having a single stylus
IPC: H04R11/12
Filed: 1959-07-06
Abstract: 930,366. Stereophonic transducers. BANG & OLUFSEN PRODUKTIONSSELSKAB A.S. July 6, 1959 [Nov. 10, 1958], No. 23190/59. Class 40 (4). A variable reluctance stereophonic transducer comprises a ferromagnetic armature 20, Figs. 1, 2, having two opposite, substantially flat and parallel surfaces 20a, 20b from one of which, 20b, extends a stylus arm 16 carrying a stylus 18. Armature 20 is held against an elastic pad 21 having substantially equal elastic response in all directions. A magnetic structure includes a permanent magnet 1 and a casing of ferromagnetic material comprising a hollow portion 2, a base 3 and a cap 4. Magnet 1 is held by an annular member 11 of non-magnetic material. The magnet structure is such that magnetic flux is generated between surface 13a of cap 4 and the ends 7a of four pole members 7 and outputs are induced in coils 8, 8a on the four pole members 7 in response to oscillation of armature 20 as stylus 18 tracks a record groove. Armature 20 is a disc or is of cruciform configuration. The armature 20 is secured to a disc-shaped member 14 of insulating material by a cord 15 to provide a removable sub-assembly. One end of cord 15 is secured inside the stylus arm 16 and the other end passes through pad 21 and is secured to mounting member 14 to hold the centre of flat surface 20a in close contact with pad 21. A cap 19 of synthetic material protects stylus arm 16. Sili-cone damping fluid may fill gap 13b.
Patent GB-647576-A (GB)
Title: Improvements relating to pantograph type current collectors
Inventor: WILSON FREDERICK
IPC: B60L5/22
Filed: 1948-09-03
Abstract: 647,576. Current collectors for electric vehicles. ENGLISH ELECTRIC CO., Ltd. Sept. 3, 1948, No. 23254. [Class 104 (iii)] A pantograph current collector of the kind comprising a collector pan assembly supported on a jointed framework to allow perpendicular movement of the assembly relative to a supply conductor, is adapted also to allow limited movement in the fore-and-aft direction. In the example the collector pan 1 is pivoted on a pin 2 at the bifurcated upper end of a normally vertical link 3 disposed between fore and aft torque tubes 4, 5 which are pivoted within lugs 7a, 8a on the upper tubes 9, 10 of the pantograph framework at points near the common apex point. The link 3 is pivoted on a pin 12 which couples together the inner ends of a pair of oppositely-extending levers 13, 14, the end of lever 13 being forked to receive the end of 14, and the holes therethrough being elongated to allow a limited rotational movement of the levers. The levers 13, 14 are also pinned to the torque tubes 4, 5, respectively, and thus caused to rotate with those members. Tensioned helical springs 16, 17 connect the extremities 13a, 14a of the levers 13, 14 to the ends of a cross-piece 18 formed integrally with a screw which is screwed into the lower end of the link 3. Normally the springs are tensioned equally and the link 3 maintained in the vertical position shown. Upward movement of the collector pan is limited by the amount of clearance between the pin 12 and the holes in the levers 13, 14, and downward movement by a web 19 on the collector pan engaging the torque tubes 4, 5. When the collector pan is deflected by pressure opposing its forward movement along the wire' 15 the link 3 pivots about the pin 12, thereby increasing the tension in one of the springs, but the pan itself maintains a horizontal position. A similar mounting is provided at each side of the jointed framework. Specification 400,152 is referred to.
Patent GB-653731-A (GB)
Title: Improvements in vent plugs for electric accumulators
Inventor: GRAY ROBIN
IPC: H01M2/12
Filed: 1948-09-17
Abstract: 653,731. Batteries. CHLORIDE ELECTRICAL STORAGE CO., Ltd. Sept. 17. 1948, No. 23262/50. Divided out of 653,770. [Class 53] A gas vent for an accumulator consists of two moulded parts a, g which are cemented together at the joint where the lower part g sockets into the upper part a. The part a is formed with two chambers d, e, the chamber d being open to the atmosphere through a passage b and communicating with the chamber e through a slot f which is partly closed by the part g. The lower end of the chamber e is open and communicates with the tubular part of the member g into which gas passes from the battery through openings h. Any liquid which passes into the device returns to the battery through the lower end i of the part g.
Patent GB-1162831-A (GB)
Title: Strip Assemblies for use in the Mounting of Panels to form Building Walls
Inventor: HARDING BRIAN
IPC: E04B2/92
Filed: 1966-05-25
Abstract: 1,162,831. Weather sealing for panelled structure. METAL SECTIONS Ltd. 24 May, 1967 [25 May, 1966], No. 23350/66. Heading E1W. A strip assembly which forms a weather seal in external wall panelling comprises an axially aligned pair of lengths of stripping 14 spaced endwise from each other and connected by a bridging strip 15, to form an expansion joint, each length of stripping including a plurality of relatively angularly disposed flange and web portions 14a, b against which the bridging strip lies, and at least one web portion, for example the web forming the bottom of the channel 14c, which is slotted or out away at its end to receive the bridging strip. The assembly of Fig. 3 is adapted for use with a panel which underlies a floor slab. Fig. I (not shown) and co-operates therewith to form inner and outer seals. An assembly showing stripping 20 and bridging strip 26 in cross section, for use between upper and lower panels, which cover the edges of a floor slab 23 is shown in Fig. 2, in which a further section 25 secured to the floor slab 23, forms an inner seal.
Patent GB-650879-A (GB)
Title: Improvements relating to the recording of television pictures on film
Inventor: NEWTON GEORGE CHARLES
IPC: H04N3/40
Filed: 1948-08-05
Abstract: 650,879. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 26, 1947, No. 23502. [Class 40 (iii)] Successive frames of an interlaced television picture reproduced by a cathode-ray tube 1 are alternately photographed by motion picture cameras 2, 3, the film of each camera being advanced whilst the other, or another (if the interlace ratio is greater than 2), camera is recording. The film negatives produced in this manner, after developing, are fed together, and suitably staggered, through a printing device to produce a positive of a complete picture. In the application of the invention to the recording of colour television pictures the number of cameras employed is made equal to the number of colour component interlaced frames. If films of the " Kodachrome " (Registered Trade Mark) type are employed two cameras only are necessary.
Patent GB-937805-A (GB)
Title: Cinematographic apparatus
IPC: G03B1/56
Filed: 1962-06-19
Abstract: 937,805. Kiriematograph apparatus. AGFA A.G. June 19, 1962 [June 27, 1961], No. 23531/62. Class 97 (1) Cinematographic apparatus includes a device for automatically attaching to a take-up spool the leading end of a film which is urged or stressed in the advancing direction, said device having a confining guide channel for the film, which channel ends in a pivoted portion spring urged into a position in which its film exit aperture is presented to the periphery of the core of the take-up spool so that the leading end of the film is radial or approximately radial to the said core, this pivoted portion being located in the said position by co-operation thereof with the camera housing and the arrangement being such that the initial reaction exerted by the film in contact with the spool core upon the pivoted - portion of the channel is incapable of pivoting said portion against the spring. As shown, film 5 from a spool 6 is guided from between a gate plate 8 and a pressure plate 9 to a take-up spool 27 by means of fixed guide plates 10, 11, a friction roller 12 with co-operating spring plate 13 and a guide duct 19 which is pivoted about the axis 21 of the roller 12 and is urged by a spring 23 into the position shown in which a pin 25 engages the lower end of an arcuate slot 22. The outer portion of the roller 12 may be of rubber and the end 17 of the spring plate 13 is engaged by a blade spring 18. The arrangement is such that, when, during threading the leading end 5a of film passes through the duct 19 and engages the spool core periphery 28, the leading end is arrested in the position shown until the core slot comes into alignment whereupon the leading end automatically attaches itself to the said core. As film is wound on to the spool 27, the duct 19 rides on the outer convolution and pin 25 moves towards the upper end of the slot 22. In a modified arrangement (Fig. 4, not shown) this pivotal movement is utilized for indicating the length of film on the spool 27, a scale bearing plate visible through a window being formed integrally with the duct 19.
Patent GB-226287-A (GB)
Title: Improvements in or relating to the recovery of calcium oxalate and other oxalate from trees
IPC: C07C51/47
Filed: 1923-09-20
Abstract: Calcium oxalate and other insoluble or nearly insoluble organic salts, such as tartrates, citrates, and other oxalates, occurring in vegetable matter are recovered therefrom by a froth-flotation process in which air or gas charged with a suitable oil or other frothing agent is introduced into the mixture of vegetable matter and water. Petroleum may be used as frothing agent, the air or gas being charged therewith in any suitable manner. Alternatively, air or steam may be passed through an emulsion containing an essential or volatile oil, such as the emulsion obtained by grinding suitable seeds or fruits with water, with or without an alkali.  Emulsions of animal or mineral origin, obtained, for example, from whale blubber or oil shales respectively, may be similarly treated.  Instead of, or in addition to, frothing agents prepared as described above, the exhaust gases from gas, oil, or internal-combustion engines may be used.  The vegetable matter may be treated directly or after the complete or partial removal of tannins and other soluble materials, and reagents, such as alkali, may be added.  The invention is described by reference to the recovery of calcium oxalate from the bark of trees, such as the Terminalia Arjuna. Specification 208,684 is referred to.
Patent GB-898858-A (GB)
Title: Pulse counter apparatus
IPC: H03K21/00
Filed: 1960-07-06
Abstract: 898,858. Electronic counting-apparatus. WESTINGHOUSE ELECTRIC CORPORATION. July 6, 1960 [July 13, 1959], No. 23615/60. Class 106 (1). In a ring counter each stage comprises two " nor " gates connected together so that when the first " nor " gate has a one output, the second has a zero output, the stages being interconnected by control gates adapted to transfer information when opened. As described, a pulse source 10 supplies a terminal 14 of a bi-stable driver unit 16 comprising " nor " gates 18, 20 adapted to supply output pulses alternately to lines 22, 24. Each stage of the ring counter comprises " nor " gates such as 34, 36, the output of the gate 34 being connected to the input of the gate 36 and the output of the gate 36 being connected to the input of the gate 34. Further inputs to the gate 34 are from a control gate 30 and a reset terminal 62, and further inputs to the gate 36 are from the corresponding gate 44 in the next stage and from a reset terminal 60. The output from the gate 34 is also fed to a control gate 38 having further inputs from a terminal 40 and from the line 24. An output is taken from the output of the gate 38 at a terminal 52. The counter has an even number of stages and the gates 30, 38 &c. are connected alternately to the lines 22, 24. In operation, an initial reset pulse is applied to terminals 15, 58, 60, 64, 68, &c., to set the driver unit 16 to its initial state, the stage comprising gates 26, 28 to the one condition and the remaining stages to the zero condition. When the next input pulse is supplied from the source 10, the driver unit 16 is changed over to cause the line 22 to go to zero potential thus opening the gate 30 to provide an output to the gate 34. The gate 34 is thus switched to provide no output to cause the gate 36 to provide an output. The one state has thus been transferred to the stage comprising gates 34, 36. In this manner the one state is stepped round the ring. In an application, Fig. 2 (not shown), the counter is employed as a distributer to serialize binary information on a plurality of parallel lines, the number of ones being counted on a single-stage binary counter which lights one of two output lamps to provide a parity check for data read from a punched card.
Patent GB-501960-A (GB)
Title: Improved insecticidal composition and method of making same
IPC: A01N25/14
Filed: 1938-08-10
Abstract: 501,960. Warp beams. TOMKINSON & CO., Ltd., J., LEIGH, J. P., and LEIGH, W. R. Feb. 19,1938, No. 5225. [Class 142 (ii)] [Also in Group XXIV] An exteriorly - screw - threaded split sleeve B is clamped on the beam and an interiorlyscrew - threaded split boss c integral with the flange C is screwed on to the sleeve and secured thereto by tightening a bolt &c. passing through the ears c<1>. In a modification the boss c is separate from the flange but secured thereto by bolts. The split sleeve B may be made more secure by providing a locking pin a<1> engaging in one of a series of holes a drilled in the ends of the (hollow) beam and secured by grub screw a<2>.
Patent GB-237461-A (GB)
Title: Improvements in change speed gear mechanism for motor vehicles
IPC: F16H3/16
Filed: 1924-10-08
Abstract: 237,461. Triumph Cycle Co., Ltd., and Sykes, A. A. Oct. 8, 1924. Variable-speed gearing yielding three speeds comprises three pairs of toothed gears, the middle gears 13, 15 being splined on a driven shaft 5 and a countershaft 7 respectively, and being moved in opposite directions in changing speeds. The gear 13 has a clutch 14 on each face, the gear 15 no clutch, as the countershaft end gears 6, 10 are both fast. When the gear 13 is moved to the left, a clutch end 3 on the driving shaft 1 is engaged, yielding a solid drive. The countershaft is constantly driven from the shaft 1. The next speed is obtained when the gears 13, 15 intermesh. The third speed is obtained when a clutch face 14 engages a clutch 11 on a loose wheel 10. Striking-forks 16, 17 envelop the sliding gears as shown in Fig. 3, and slide on guide bars 18, 19 being engaged by the ends of a medially pivoted lever 20 actuated from a lever 27 outside the gear case. Locking in proper positions is effected by a spring bolt in the casing engaging recesses 24 in a plate 23 carried by a pivot. shaft 26.
Patent GB-321481-A (GB)
Title: Improvements relating to apparatus for delivering liquid in different quantities measured by volume
IPC: B67D7/16
Filed: 1928-08-21
Abstract: 321,481. Smale, N. E., and Wayne Tank & Pump Co., Ltd. Aug. 21, 1928. Fixed-chamber apparatus in which a supply pipe 4 fills the chamber 2 to the level A-A of an overflow pipe 6 and from which the amount delivered depends on the depression of a delivery pipe 9, is fitted with a valve which closes the upper end of the supply pipe unless the delivery pipe is raised above the level A-A, an arm on the valve forming a closure for the top of the delivery pipe in its raised position. The lower part of the pipe 9 after passing through a gland in the base 5 works within a well-plate 6 and communicates with the outlet 11 having a valve 12. A rack 13 is connected by a cross-piece 16 to a rod 14 passing by a gland into the well-pipe 10 and attached therein to the pipe 9. On the rack is a lug 20 adjacent to a series of dogs 21 on a rotatable shaft 22. The spindle 32 of the outlet valve 12 has a cam 33 which, during the first part of the movement of the handle 31 and before the valve 12 is opened, actuates a crank 35 to turn the shaft 22 and engage the lug 20 between the dogs 21. In order that the lug 20 may be appropriately placed to permit the delivery valve to be opened, an external pointer 25 corresponding to the quantity required is turned. The rack 13, accompanied by the pipe 9, may then be lowered until the lug 20 strikes a projection 23 on the spindle of the pointer which has been turned. This also leaves the lug in a position to engage between the dogs 21, and permit delivery from the valve 12. A spring-pressed bolt associated with the uppermost pointer 25 locks the delivery pipe and rack in the highest position and must be manually released. The spindle 32 also carries a plate 36 having a lock 40 the bolt off which, when the valve 12 is closed, is in alignment with an opening 37 and the spindle 38 of the drain valve 8. Two locking positions are provided. In the first the bolt engages the opening 37, in the second it pushes back the bolt 38 and opens the drain valve 8. A counter 46 is fitted having its operating member in the path of pins on the rack 13, and a liquid meter may be inserted in the outlet pipe 11.
Patent GB-815143-A (GB)
Title: Improvements in or relating to lifter mechanism of textile spinning, doubling and similar machines
IPC: D01H1/30
Filed: 1957-07-30
Abstract: 815,143. Lifter-mechanism for textile spinning &c. machines. WHITELEY. W. Nov. 13, 1957 [July 30, 1957], No. 24047/57. Class 120(2) For adjusting the lifter-rail of a textile spinning &c. machine, if desired while the machine is running, bushes 4, 5 are provided on the traverse-rail to one side of the cranked-arm which operates the pokers; the bushes have cam-shaped endfaces so that when one bush is rotated relatively to another, the position of the lever can be adjusted. The bush 4 is positioned by a nut 4a sunk to distinguish it from the nut 5a by which the other bush is secured. A collar 3 is provided on the other side of the lever.
Patent GB-1333849-A (GB)
Title: Spread-spectrum position monitoring system
IPC: H04W60/00
Filed: 1971-04-19
Abstract: 1333849 Radio direction-finding HAZELTINE CORP 19 April 1971 [6 May 1970] 24158/71 Heading H4D Relates to a system for determining the posi tion and identity of a mobile radio transmitter by ascertaining the differences in times of wave arrival at three spaced receiver stations. According to the invention the signal transmitted is a so-called " spread-spectrum " signal. The effects of multi-paths caused by reflectors, particularly in an urban environment, are thereby reduced. In one embodiment the transmitted signal is derived from a pseudo-random code generator which controls a bi-phase modulator, Fig. 2A (not shown); in another embodiment two such generators 25b, 27b are employed and the modulator 19b is quadri-phase. At one of the spaced receiving stations matched filters respectively start and stop an identity (recognition) circuit, and the outputs of matched filters at the two other receiving stations stop respective interval counters which have been started by the output of a matched filter at the first receiving station, Fig. 3 (not shown). The system caters for a plurality of mobile transmitters radiating at random; and only a low peak power, e.g. one watt is necessary.
Patent GB-1040944-A (GB)
Title: Improved built-in oven
IPC: F24C15/30
Filed: 1963-06-18
Abstract: 1,040,944. Withdrawing objectionable fumes. ELECTROLUX A.B. June 18, 1963 [June 18, 1962], No. 24174/63. Heading F4W. An oven 1 is mounted in and spaced from a recess in a wall or cupboard 3, an upper ventilation channel 5 housing a shield 6 provided with an inclined front flange 7, which shield is arranged to slide in the channel 5. The shield is provided with side edges or guide bars 8 extending perpendicularly of the shield. With the shield pulled out; Fig. 4 (not shown), vapours from the open oven are collected by the shield and delivered to a suction duct 9. Cooling air flows through channels 4 to the duct 9. In a modification, Figs. 1 and 2 (not shown), the suction duct is dispensed with and the shield is arranged with the flange 7 upwardly inclined so that the cooling air which flows through channels 4 and 5 is directed upwardly by flange 7 to protect the wall above the recess from oven vapours which are deflected outwardly by the flange 7.