baber/WOPTO huggingface dataset:
Patent GB-649438-A (GB)
Title: Improvements in variable electric resistances or potentiometers
IPC: H01F21/00
Filed: 1948-11-26
Abstract: 649,438. Variable-contact resistances; wire and ribbon resistances; resistance coatings and deposits. FOX, P. X. Nov. 26, 1948, No. 30742. [Class 37] The roller 22, Figs. 1 and 3, is axially slidable and freely rotatable on a conducting rod 20 which fits loosely into radial slots 21 formed in moulded arms 18 secured on and one at each end of the operating shaft 16, whereby with rotation of the latter the roller 22 is constrained to run along the winding path of a helical resistance element 13 formed on a mandrel 12 and seated in a helical indentation 14 in a sleeve 15 secured within the casing 10. The sleeve 15 is longitudinally split into two parts, Fig. 2 (not shown), to facilitate assembly. The mandrel 12 may be formed of copper wire coated with insulating material. Two wire springs 23, one at each end of the rod 20 and each secured between the adjacent arm 18 and rod 20, Fig. 3, maintain the roller 22 in resilient contact with the resistance element 13. The roller 22 is connected to an external tag through the rear wire spring 23 and compression spring 19 arranged between two washers 27, 28, Fig. 1. The roller 22 comprises an inner conducting disc bounded by insulating discs 42, Fig. 3, which form guiding flanges. Alternatively, a roller as described in Specification 582,476 may be utilized. In a modification, Figs. 6 and 7 (not shown), the moulded arms 18 are replaced by two phosphor bronze springs bent in towards one another. A carbon track may be used instead of the wire-wound element shown.
Patent GB-307816-A (GB)
Abstract: 307,816. Hamilton, R. M. Dec. 14, 1927. Totalizators.-Logarithmic scales or logarithmically moved elements are used to determine and indicate the odds by relative movement. Referring to Figs. 1 and 2 the logarithmically graduated scale 11 (the pool scale) is moved with reference to a fixed pointer 13 in accordance with the bets laid on all the horses. A similar scale 12 and pointer 14 serve for registering the individual horse bets. On the other side of the scale members are respectively a logarithmic scale 15 and an index 16 to indicate the odds. In the form shown in Fig. 3, the total and individual wagers are registered by means of logaritmically graduated drums connected together differentially by an endless belt 25 which passes over pulleys 27, 31 suspended by a cord 36 carrying a pointer 37 moving over a stationary logarithmic odds scale 39. If a customer wishes to have his ticket endorsed with the odds prevailing at any moment, the operator shifts both scales back through the same distance equivalent to the amount of the bet, thus maintaining the odds at the same figure and providing for the necessary paying-out on the stamped ticket if the horse wins. If it is desired to show bookmakers' odds instead of totalizator odds the markings on the odds scale or the position of the pointer 16 may be altered, or alternatively the apparatus may be worked so that the registration of a bet is not accompanied by any movement of the pool scale for the horse concerned.
Patent GB-227101-A (GB)
Title: Means for establishing or breaking the connection of two electric conductors
IPC: H01R13/33
Filed: 1924-12-23
Abstract: 227,101. Coenraads, J. D. Jan. 5, 1924, [Convention date]. Plug connectors. - The socket on the plug member is formed by one or more springs, helically wound with a pitch substantially equal to the inner diameter, which, in the act of coupling and uncoupling are strained in the direction required to facilitate the operation. The socket 1 shown in Fig. 1 is compressed longitudinally by the insertion and withdrawal of the plug 2, and the plug 4 in Fig. 2 is stretched when coupling by the pin 6 engaging its bottom coil and again when uncoupling.
Patent GB-534909-A (GB)
Title: Improvements in or relating to antenna
IPC: H01Q5/48
Filed: 1939-11-27
Abstract: 534,909. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd: Nov. 27, 1939, No. 30921. Convention date, Nov. 26, 1938. [Class 40 (v)] A short-wave aerial, particularly suitable for receiving broadcast television signals, comprises a pair of L-shaped wires 1, 3 and 2, 4 arranged horizontally. Each wire has an overall length of half the shortest working wave-length, and each is connected to one side of a transmission line TL. The figure-of-eight response of the two quarterwave dipoles 1, 2 when combined with the out-of-phase signals from the two quarter-wave dipoles 3, 4 produces a substantially-circular or non-directional response. A second pair of aerials, dimensioned for a shorter wave-length, may be connected in parallel with the first, in order to enable the aerial system to cover a wider range of frequencies.
Patent GB-189342-A (GB)
Title: Method of making driving belts
IPC: F16G1/04
Filed: 1921-11-19
Abstract: 189,342. Rothmund, G., and Kohlschutter, E. W. Nov. 19, 1921. Fabrics with multiple superposed coatings; treatment prior to coating.-Fabric which has been saturated with rubber solution is dried in air and coated with a paste of rapidly vulcanizing india-rubber mixture which is afterwards dried at moderate heat without damaging the fabric. The fabric is then coated with rapidly vulcanizing rubber which is then vulcanized at a moderate heat. The solution of rubber may comprise a 3 per cent solution of varnish, waste from balata or caoutchouc masses, oil residues known as bottom still, or asphalt, dissolved in benzol or like solvent. The rubber mixture contains a vul-- canization accelerator such as urea, or thiourea in combination with litharge, lead, red lead or magnesia, or nitrosodimethyl-aniline in combination with zinc oxide which tends to act as a preservative particularly against tropical influences.
Patent GB-707054-A (GB)
Title: Improvements in or relating to discontinuous drying
Inventor: GEIJERSTAM ERIK OLOF EMANUEL A
IPC: F26B21/08
Filed: 1950-12-19
Abstract: 707,054. Drying systems etc.; drying air. AKTIEBOLAGET ENKOPINGS VERKSTADER. Dec. 19, 1950, No. 30930/50. Classes 34(1) and 34(2) In a method of drying material in batches. a stream of air which circulates through the material in a chamber 2 is heated and passed through an adsorbent 7 located downstream of the material to dry the adsorbent and the heating is then discontinued, the adsorbent drying the circulating stream of air so that drying of the material continues under falling temperature and the material is cooled as drying is completed. The drying air is circulated by a fan 1, 'and heated by heater 3, damp air withdrawn through a duct 4 passing through a heat-exchanger 5 to preheat fresh replacement air entering through a duct 6. Thermostats 8 or 9 control the supply of heat and a timing device or thermostat 10 determines the cooling period. In a modification of the apparatus two or more heaters 3a, 3b and a corresponding number of containers of adsorbent are used and in a further modification, Fig. 4, a container 11 of adsorbent is located between chamber 2 and outlet 4 and another container between the duct 6 and chamber 2. In the first part of the heating period valve 13 in duct 6 is closed and adsorbent 11 takes up water evaporated from adsorbent 7 and the material in chamber 2 and in the last part of the heating period and the cooling period valve 13 is opened and moisture taken up by adsorbent 11 evaporates as the fresh air entering is cooler and drier. The valve 13 is opened at a moment determined by means of a thermostat 14. As the entering air becomes cooler its drying capacity is lowered and this is compensated for by the adsorbent 12 which takes up water as the temperature decreases. In a modification of the method the air, which is initially heated, passes through adsorbent 7, Fig. 6, upstream of the chamber 2 and once through the chamber then passing to exit duct 4. A simpler form of the apparatus (not shown), does not have adsorbent 11 as shown in Fig. 6, and has a fixed partition instead of the shutters 16. In the apparatus of Fig. 6, some air may be recirculated by opening shutter 16 during the initial heating period and the outgoing air passes through adsorbent 11.
Patent GB-341416-A (GB)
Title: An improved paraffin emulsion, method of making the same and use therefor
IPC: C09K23/00
Filed: 1929-10-11
Abstract: Aqueous emulsions of paraffin wax are prepared by the use as emulsifying agent of saponified Montan wax.  For example 100 lbs. of Montan wax and 300 lbs. of paraffin wax are melted in 900-1000 lbs. of hot water with stirring and 7 lbs. of caustic soda in solution are added with continued stirring.  The resulting emulsion is diluted either immediately with 600-700 lbs. of hot water or gradually with sufficient cold water to maintain the original viscosity: alternatively it may be passed through a colloid mill.  The paste-like product may be added to paper pulp or fibre in a beater and subsequently precipitated to produce waterproof pulp boards, cardboard or paper, or may first be transformed into a fine storable suspension by the addition of a precipitant such as aluminium or magnesium sulphate.
Patent GB-1262674-A (GB)
Title: Pressure operated electrical switch
IPC: B66C23/90
Filed: 1969-07-16
Abstract: 1,262,674. Fluid actuation of switches. GROVE MFG. CO. 16 July, 1969 [19 Dec., 1968], No. 30986/71. Divided out of 1,262,673. Heading H1N. A cylinder 80 having a closed end portion with fluid inlet port 85 is mounted with a piston 81 therein engaging a base member 83 such that changes in fluid pressure move the cylinder 80 under action of a spring 91 to cause the closed end portion to act on an intermediate portion of a lever 95, pivoted at 96, whereby a slide 100, pivotally coupled to the free end of lever 95, is moved in guides 101 to operate switch means arranged in its path. As shown, the spring 91 is located between a crosshead 87 on cylinder 80 and a top plate 90 which is adjustable by nuts 92 to set the operating pressure. The lever 95 is connected to the slide 100 by a drag link 98 and hinge 99 and is adjustable in length at 114 to compensate for inaccuracy in spring rate of the spring 91. A plurality of switch units (Figs. 3 and 4, not shown) are carried in staggered formation on plates 103, 104 mounted on the guides 101 to be responsive to calibrated increments of fluid pressure.
Patent GB-263126-A (GB)
Title: Improved means for preventing deposits on the pistons of internal combustion engines
IPC: F02B3/06
Filed: 1926-12-07
Abstract: 263,126. Maschinenfabrik Augsburg- Nurnberg Akt.-Ges. Dec. 21, 1925, [Convention date]. Pistons. - One or more rows of auxiliary ports c, connected to the exhaust pipe or atmosphere by a pipe d, are arranged on the opposite side of the cylinder of a two-stroke double-acting internalcombustion engine to the ordinary inlet and exhaust ports a, b, to enable gases, blown past the piston rings, to escape. The piston comprises two discpistons e, e1 connected by a tubular member g which is set back from the cylinder wall. The invention prevents the formation of carbon deposit on the side of the piston away from the ports a, b which causes uneven wear of the cylinder.
Patent GB-248513-A (GB)
Title: Improvements in processes and apparatus for distilling petroleum oils and other liquids under high vacuum
IPC: B01D3/10
Filed: 1924-12-24
Abstract: 248,513. Imray, O. Y., (Zieley Processes Corporation). Dec. 24, 1924. Hydrocarbons, distilling; progressive evaporators.-In the vacuum distillation of liquids, such as petroleum oils to obtain lubricating oils, the oil is subjected to a progressively increasing temperature while passing along a conduit in a shallow stream under a pressure of 50 mm. of mercury or less. The different fractions are flashed into vapour in succession and are drawn off and separately condensed. The still comprises a series of inclined conduits 5, 7 - - connected to headers 6, 8 - - at opposite sides of the furnace chamber which is heated by burners 25 and contains baffle plates 26. In order to separate vapour from entrained liquid, pipes closed at their upper ends and perforated along the upper sides are placed in the conduits, The headers 6 at one side of the furnace chamber lead to separating condensing devices evacuated by a two-stage steam-jet ejector 61. The vapours pass through lagged towers 46 to separate particles of liquid and through a series of condensers 50, 50<1>, 50<11> to separate fractions. Each condenser is fitted with duplicate receiving vessels 53. 54. Light vapours are prevented from condensing in the condensates obtained from the lower headers or are removed from the condensates by maintaining the condensers at sufficiently high temperatures and by passing the condensates through heated conduits 86 on their way to the receiving vessels. The light vapours are passed by pipes 80. 81, 82 to the condensers connected to the first header.
Patent GB-426698-A (GB)
Title: Apparatus for simulating movement for publicity panels and other objects
IPC: G09F19/10
Filed: 1934-10-29
Abstract: 426,698. Changing signs. NAAMLOOZE VENNOOTSCHAP HANDEL-MAATSCHAPPIJ DELMA, 108, Avenue des Nations, Brussels. Oct. 29, 1934, No. 31018. Convention date, Jan. 26. [Class 3 (i)] A transparency 2 is illuminated by the light of a lamp 4 reflected by a rapidly vibrated mirror 3 bearing markings on its surface. The lamp 4 is surrounded by a slotted cylindrical screen 6 rotated either by convection currents or by a motor. A cut-out opaque silhouette 9 conceals the screen 6 from view, and other silhouettes 13 may be mounted on the transparency 2. The mirror 3 is vibrated either by a motor 11 operating an eccentric 12 or by an electric trembler or other means. Fig. 6 shows a brake applied to the screen 6 and consisting of a feather &c. 20 adjustably mounted on an arm 18 pivoted or otherwise fixed to the casing 1. The feather 20 bears on an even or uneven cap 22 carried by the screen 6 to give the latter a continuous or intermittent braking effect. A band 23 prevents accidental displacement of the screen 6 from its pivot, the band being mounted on an arm 25 pivoted at 26 to allow of its being raised when required. The device may give the effect of flames and be used as a warning sign on gates, vehicles, &c.
Patent GB-611316-A (GB)
Title: Process for the preparation of diarylamines
IPC: C07C209/18
Filed: 1945-11-19
Abstract: Diphenylamine or nucleus alkylated diphenylamines are prepared by condensing aniline and phenol or aniline and an alkylated phenol or a nucleus alkylated aniline and phenol or an alkylated phenol and a nucleus alkylated aniline, wherein at least one of the reactants is present as its aluminium or magnesium compound, e.g. aluminium phenolate or magnesium anilide.  In examples, diphenylamine and 4-methyldiphenylamine are prepared.  The Specification as open to inspection under Sect. 91 refers to the preparation of amines of the general formula R1-NR-R11, wherein R represents hydrogen or an alkyl group and R1 and R11 are benzene nuclei which may carry substituents, by the method given above employing an aromatic nucleus linked monohydric or polyhydric compound and a primary or secondary arylamine.  A catalyst such as iodine may be employed to assist the reaction.  In additional examples, diphenylamine is prepared by heating aluminium anilide and aluminium phenate in a Carius tube, methyl-N-diphenylamine by reacting aluminium derivatives of phenol and monomethylaniline and N : N1-diphenyl-p-phenylenediamine by reacting the aluminium derivatives of aniline and hydroquinone.  This subject-matter does not apear in the Specification as accepted.
Patent GB-1121473-A (GB)
Title: Apparatus for measuring and/or controlling the level of liquid in a tank
IPC: G01F23/16
Filed: 1965-07-22
Abstract: 1,121,473. Indicating and controlling liquid level. P.R. SUNDBY. July 22, 1965 [July 22, 1964; Sept. 14, 1964], No. 31197/65. Heading G1H. Apparatus for measuring and/or controlling the level of liquid in a tank comprises a pair of pressure sensing devices in the tank at vertical distances in the ratio of 10:1 relatively to a selected liquid level and actuating signalling devices to provide signals in the inverse ratio, i.e. 1:10, when the liquid in the tank is at the selected level. In the apparatus illustrated pipes a, b depending into a tank 1 at distances a and b, respectively beneath a desired level 98 to which the tank is to be filled, and supplied with gas from a compressor 10, are connected to manometers 14, 15 and 26, 27, respectively. The manometer 14, 15 contains mercury of specific gravity 13À6 and the manometer 26, 27 a liquid of specific gravity 1À36, whilst the ratio a:b is 10:1. The manometers are disposed side by side so that when the liquids therein are at the same level the liquid in the tank is at the desired level 98. The manometer scales are graduated to indicate the liquid level in the tank in percentages of the vertical distance a, and include vertical graduations representing specific gravities of tank liquid and intersected by transverse curves to enable correction of the scale readings in accordance with the specific gravity of the liquid in the tank. In alternative embodiments the manometers are replaced by pressure sensitive devices operating electric switches to stop a pump supplying liquid to the tank; and in a further embodiment pressure sensitive impedances are disposed in the tank at distances in the ratio 1:10 beneath the desired liquid level and are connected through amplifiers having amplifications in the ratio 10:1 to a control circuit which stops the liquid supply pump when the outputs from the two amplifiers are equal.
Patent GB-507482-A (GB)
Title: Improvements in or relating to wireless receivers
IPC: H03J7/16
Filed: 1937-11-15
Abstract: 507,482. Automatic tuning correction. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 15, 1937, No. 31318. Convention date, Nov. 13, 1936. [Class 40 (v)] In a wireless receiver having automatic tuning correction, some or all of the tune-correcting circuit elements are employed for normal reception after the tuning correction has been effected. With switches .S1-6 in the positions shown, the circuit of Fig. 1 is arranged for tune correcting, intermediate frequency signals from 1 providing a differential D.C. control voltage across resistances 4, 17 from diodes 2, 13, and a phase variation type of discriminator network 3. The input to amplifier 7 is shortcircuited by S4 and the control potential is supplied over filter 19, 20 to the grid of the output valve 8. Variation of the anode current of valve 8 through coil 21, which is normally balanced by the current through coil 22, causes rotation of a tune-correcting condenser. When tuning is accomplished, switches S1-6 are changed from the positions shown and the L.F. output from resistance 4 only, is passed via condenser 5 and volume control 6 to the amplifier valve 7. Details of an arrangement of tune-correcting condenser and switchoperating mechanism are shown in Figs. 3, 4. In the position shown, contacts S1-6 are set for tune correction and the rotor n of the condenser is held in its zero position by a control coil 26. When coarse tuning is accomplished by rotation of the spindle a and pulley h, the knob b is released and the spindle moves axially under the control of spring d and dashpot f. Contacts S26 first operate, shortcircuiting coil 26 and permitting the condenser to adjust its position in accordance with the control current in coils 21, 22, the brake p, spring mounted on the spindle, then clamps the condenser rotor n in position and the final movement of the spindle operates switches S1-6 to condition the circuits for reception. In a modification employing a push-pull output stage, the low-frequency is supplied in normal manner from one diode load resistance; but for tune correction each valve is fed from one of the diode loads and has one of the coils 21, 22 in its anode circuit. The switch arrangement may be modified so that the receiver is operating during coarse tuning. Instead of the adjusting arrangements of Figs. 3 and 4, a small motor, which has sufficient friction or inertia to be immovable unless actuating current is flowing, may be employed to rotate the small variable condenser; the brake p of Fig. 4 may then be omitted. The driving- motor may be connected to the condenser through a friction or other coupling which can be disengaged during coarse tuning and the restoring arrangements comprising coil 26 can also be omitted. When the frequency discriminator circuits are of the type detuned from the operating frequency in opposite senses they are brought to the same frequency for reception and in some circumstances their coupling varied by the connection or dis. connection of circuit elements.
Patent GB-246646-A (GB)
Title: Apparatus for recording telephone messages
IPC: H04M1/65
Filed: 1924-12-31
Abstract: 246,646. O'Dell, A. E., (Naamlooze Vennootschap Financ Maatschaappij Driebergen). Dec. 31, 1924. Phonographic dictation, electric installations for.-A number of stations A, B, which may also be connected over lines 5 to a telephone exchange, have access over lines 6 to a common phonographic recording mechanism T to which any station may connect itself to the exclusion of all others by the operation of an individual relay 9. This relay is first energized over its left-hand winding by a hand switch 12 or a foot switch 12a and locks up over its right hand winding in series with a common relay 13 which at its armature 14 breaks the initial energizing circuit of the connecting-relays 9 of all other stations. This locking-circuit may include the conductor 24 and the switch 12 in which case the switch must be continuously depressed during the recording operation. Preferably, however, the locking circuit includes the slow-release armature 17 of a relay 16 which may be kept energized either over lead 41 by the intermittent operation of switch 12 or automatically over lead 29 by a phonic relay 26 in series with the recorder 2 and operated by the speech currents. The starting circuit for the motor 3 is completed by relay 13 which also energizes visual signals 33 to indicate at the sending station, that the recording mechanism is operative and, at the other stations, that the mechanism is busy. This signal circuit includes contacts 34 intermittently opened by the recorder 2 when nearing the end of the record to indicate this fact to the sender. A signal 38 individual to the relay 9 informs an attendant which station is connected to the recorder. The conductors 6 also include contacts 35 which may either be controlled by an additional relay 36 or, if the switch 12 is to be pressed continuously, may be combined with the switch contacts.
Patent GB-421689-A (GB)
Title: Improvements in or relating to electrical timing circuits
IPC: H03K4/86
Filed: 1933-11-10
Abstract: 421,689. Valve generating circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c/o General Electric Co., Wembley, Middlesex. Nov. 10, 1933, No. 31391. Drawings to Specification. [Class 40 (v)] In an electrical timing circuit of the condenser-relaxation type, such as is used as a timebase in a cathode-ray oscillograph, the electric discharge device, which may be a gas-filled triode having a thermionic cathode, is placed in a magnetic field with the object of decreasing the fly-back time. The field should have a component perpendicular to the electron paths. The condenser-relaxation circuit may be of either of the usual types, i.e. with the electric discharge device either in the discharging circuit or in the charging circuit of a condenser. Specification 418,828 is referred to.