baber/WOPTO huggingface dataset:
Patent GB-777238-A (GB)
Title: Structural units and structures made from them
IPC: E04B7/10
Filed: 1953-04-24
Abstract: 777.238. Arches; roofs; structural units. DALE. T. S. S. Dec. 11, 1953 [April 24, 1953], No. 14938/56. Divided out of 777,237. Classes 20(4) and 87(1) A structural unit forming an arch or vault comprises a resilient member 10 held in a stressed bowed condition by a tension cord between its ends, the resilient member being tapered so that it is thicker at its mid-length than towards the ends. The resilient member may be a rib, e.g. comprising a hollow member of triangular or D-section, or a panel or a series of ribs with a panel or panels bent between them. Materials used for the resilient member include high-tensile steels, resilient alloys, plastics and wood in solid or laminated form. The resilient member may consist of shorter component lengths, suitably jointed together and the member may also be held in a stressed bowed condition by setting it in between solid abutments. Joints between panels may be made as described with reference to Figs. 12, 13 ana 14 of Specification 777,237. A roof structure may be made by erecting a series of arches suitably spaced from each other and securing roofing material over the framework so formed.
Patent GB-1520985-A (GB)
Title: Internal combustion engine having an aftercombustion chamber
IPC: F02F1/42
Filed: 1976-04-13
Abstract: 1520985 Exhaust passages NISSAN MOTOR CO Ltd 13 April 1976 [15 April 1975]  15009/76 Heading F1B [Also in Division F4] An I.C. engine comprises siamesed exhaust passages 22, Fig. 1, each communicating with two combustion chambers C 1 , C 2  and each having a single discharge at 32a into an exhaust manifold 32 containing an aftercombustion chamber 34. An insulating layer of air trapped between the outer surface of liners 28, 36 and the inner surface of the exhaust passage and exhaust manifold keeps the temperature of the exhaust gases high enough to ensure sufficient burning of the remaining combustible products in the aftercombustion chamber 34. Additional air may be supplied to complete the burning. Double lines providing two layers of air may be provided. As shown in Fig. 5, the junction 40 between the two portions of each siamesed passage may occur in the exhaust manifold rather than in the cylinder head. As shown in Fig. 10, heat insulation material such as glass wool may be provided between the exhaust manifold 32 and its liner 36. The time during which the exhaust gases are retained in the exhaust manifold for aftercombustion is increased by means of an inner casing 56 into which siamesed exhaust passages 22, 24 discharge via guide tubes 64, 66. The outlet opening 62 of the inner casing 56 is at the end remote from the outlet opening 32c of the exhaust manifold, to increase the flow-path length within the manifold. As shown, the guide tube 64 may be bent away from the outlet opening 62 to ensure that the exhaust gases from the exhaust passage 22 do not pass directly to the outlet opening.
Patent GB-119711-A (GB)
Title: Improvements in the Manufacture of a White Pigment.
Inventor: MORRIS EDGAR FORD
IPC: C01G30/00
Filed: 1917-10-17
Abstract: 119,711. Morris, E. F., and Nevill, T. N. C., (trading as St. Helens Smelting Co.). Oct 17, 1917. Antimony oxide for use as a pigment is rendered free from acid substance by treating it in water with an acid-neutralizing substance such as sodium carbonate, borax, precipitated chalk, or a mixture of these. As an example, a thin mixture of antimony oxide and water is treated with milk of lime and boric acid in such proportions as to leave the resulting solution alkaline to litmus but not sufficiently alkaline to give a precipitate of chalk on breathing into it. The quantity of lime required is about one half per cent. of the quantity of antimony oxide.
Patent GB-1022441-A (GB)
Title: Improvements in or relating to liquid fuel burners
Inventor: RICHARDSON ARTHUR WHITTAKER
IPC: F23D3/00
Filed: 1961-04-26
Abstract: 1,022,441. Liquid fuel burners. KARMA (NEW MALDEN) Ltd. April 26, 1962 [April 26, 1961], No. 15050/61. Heading F4T. In a heating appliance including a perforated shell or short drum burner 1 fed from a reservoir 7 in which a constant level 10 is maintained by a bird-fountain supply, fitting of the appliance towards the burner automatically reduces the fuel supply to the burner. Fuel from the reservoir 7 passes through a vertical slot 9 in a partition 8 to a chamber 6 and thence via a supply pipe 5 to the burner trough 3. On tilting the appliance towards the burner the area of the slot 9 through which fuel can pass is reduced and on tilting the appliance away from the burner an increased supply of fuel is permitted. In modifications (not shown) a plurality of slots or other shaped apertures may be provided and the apertures may be tapering and/or inclined and may overlap. In a further construction (not shown) the feed pipe 5 extends upwardly into the chamber 6 above the normal level of fuel therein and apertures are provided in the extension.
Patent GB-291397-A (GB)
Title: Improved method of and apparatus for comparing and recording relative intensity of radiant energy
IPC: G01J3/42
Filed: 1928-05-23
Abstract: 291,397. Hardy, A. C., and Cunning- ham, F. W. June 1, 1927, [Convention date]. Colorimeters; photometric apparatus; spectroscopes.-Apparatus for comparing or measuring and recording radiant energy is described with reference to its use for the comparison of colour samples with one another or with a standard of comparison. A spectrophotometric analysis of the light reflected from the samples and standard is made and recorded. Light from a source 3 passes through condensers 10, 11 and cooling cells 12, 13 to a standard material 7, such as a block of magnesium carbonate, and to a sample 9 to be tested. Adjustable shutters 14, 15 are placed between the source of light 3 and the specimens 7, 9 to regulate the relative intensity of the incident light. The light reflected from the surfaces 6, 8 passes to a rotating disc 27, having transparent and reflecting sectors so that the beam L reaching the prism 34 through the lens 35 is alternately composed of reflected rays from the sample 9 and direct rays from the standard 7. The prism 7 disperses the beam, which passes through the lens 36 and forms a spectrum band S on a shield 37<a> carried by a sliding shaft 37 and having a slit 38 against which is a rod or tube 39 of quartz by which the light is directed on to a photo-electric cell 40. The rod 39 is shown directed to the red end of the spectrum and the shutters 14, 15 are initially adjusted so that a greater amount of red light is reflected from the standard 7 than from the sample 9. A pulsating current is thus set up in the cell 40, which is amplified by the thermionic amplifier 42, and passed through the rectifier 45, mounted on the same shaft as the disc 27, to the galvanometer a. According to the direction of the current the galvanometer closes the circuit either through leads 54, 55, or the leads 54, 57. As shown, the circuit through the leads 54, 57 is closed completing a circuit from the mains by means of the relay R<2> through the motor M<2> in a direction to close the shutter 14 by means of the rotation of the shaft 19 and worm gearing on the movable part of the shutter 14, until the light is reduced to the point at which the rays from the standard 7 are equal in strength to the rays from the sample 9. The amplifier 42 is then ineffective and the relay R<2> opens, thus stopping the motor M<2>. The rotation ot the motor M<2> also causes a marker on the bar 98<a> to be traversed across the drum 85 in accordance with the adjustment of the shutter. Simultaneously the motor M<1> drives a shaft 65 carrying the recording drum 85, a circuit breaker 64 and a cam 81, by which the position of the bar 37 is determined. Should the galvanometer G close the circuit through the leads 54, 55 the relay R' would cause the motor M<2> to rotate in the opposite direction, opening the shutter 14. The combined effect of the rotation by the motors of the shafts 19, 65 is to record on the drum 85 for all wave-lengths the reflection factor of the sample under test.
Patent GB-1141468-A (GB)
Title: Improvements in or relating to carburettors
Inventor: O'NEILL CORMAC GARRETT
IPC: F02M7/17
Filed: 1965-04-09
Abstract: 1,141,468. Spray carburetters. BENDIX CORP. Feb. 15, 1966 [April 9, 1965], No. 15172/65. Heading F1B. In a constant suction carburetter, the fuel-air ratio is adjusted in accordance with temperature at idling or slow running conditions by a temperature responsive device 40 which opens the air valve 26 slightly as temperature increases. The device 40 comprises a bi-metallic ring or strip situated between the piston 26 and its casing. In Fig. 5 (not shown) the piston position is adjusted by a bellows type thermostat (48) and in Fig. 6 a bi-metallic spring 60 controlling a stop 54 for the piston 26d has an abutment 57 adjusted by a lever 63 connected to the throttle valve.
Patent GB-793894-A (GB)
Title: Photographic stripping film
IPC: G03C1/805
Filed: 1956-05-16
Abstract: Maleic anhydride and 2-decene are heated together in the presence of catechol to give a  - (2 - decenyl) - succinic anhydride.  The product is then treated with b -diethylaminoethanol to give the mono-diethylaminoethyl ester of 2-decenyl succinic acid.  It is stated that, in general, succinic anhydrides substituted in the a -position by an alkenyl chain of 8-18 carbon atoms, may be condensed with secondary or tertiary alkylolamines.  Specifications 555,383, 632,402, 640,270, [all in Group XX], and U.S.A. Specification 2,089,212 are referred to.
Patent GB-403295-A (GB)
Title: Power plant for side paddle wheel ships
IPC: B63H23/00
Filed: 1933-05-26
Abstract: 403,295. Paddle-wheel ships. BAUER, G., 82, Mittelweg, Hamburg, and BROSE, W., 9, Gabriel Seidlstrasse, Bremen, both in Germany. May 26, 1933, No. 15282. [Class 114.] Plant for driving paddle-wheel ships includes two parallel internal-combustion engines A which each drive through an hydraulic coupling B and reduction gear C on to a countershaft F which is coupled by a reduction gearing D to the paddle-wheel shaft E. The engines are arranged symmetrically about the longitudinal axis of the ship so that the centre of gravity of the plant lies in the vertical plane containing this axis.
Patent GB-329167-A (GB)
Title: Improvements relating to the control of gas making plants
IPC: C10B27/06
Filed: 1929-05-16
Abstract: 329,167. Glover, W. T., and Toogood, H. J. May 16, 1929. Hydraulic mains.-The flow of gas in the hydraulic main is controlled by causing the level of the liquor in the main to be varied by means operating due to variations in the gas pressure at the inlet side of a flow area regulator in the main. Gas in a main a flows under a plate b, which extends across the upper part of the main, and through a gap c the area of which is varied according to the depth of the liquor which overflows through an outlet e in an adjacent chamber d. The liquor reaches this outlet through a hole f in a bell g, which is attached by a rod to an upper floating bell i, the upper surface of which is subjected by a pipe k to the pressure at the inlet side of the partition b. The interior of the bell communicates with the atmosphere through a pipe m, and an annular chamber n vented by a pipe o acts as a float to the bell. When the gas pressure rises the bell i falls and lowers the bell g, which lowers the level of the liquor by allowing this to flow out through the hole f, thus increasing the area of the gap c. If gas generation ceases, the bell i rises to such a height that the plate b dips into the liquor.
Patent GB-1429771-A (GB)
Title: Control systems for fuel systems for engines
IPC: F02D41/40
Filed: 1972-04-04
Abstract: 1429771 Automatic control of speed CAV Ltd 21 March 1973 [4 April 1972(2)] 15339/72 and 15341/72 Heading G3R [Also in Division H3] In a system for controlling the fuel supply of an I.C. engine, the speed of the engine is detected by an A.C. tachometer whose output is converted to a D.C. voltage proportional to the frequency of the A.C. signal by means of a diode pump circuit including a capacitor connected across the input and output terminals of an operational amplifier. The control systems described are similar to those disclosed in Specifications 1416861 and 1416862. The A.C. signal is passed through a shaping circuit, Fig. 8 (not shown) to produce a squarewave between terminal 46 and line 23. The voltage developed across the capacitor 96 is proportional to the frequency of the input signal at terminal 46 by reason of its connection across the input and output terminals of operational amplifier 95. The resistor 98 provides a bias so that the zero frequency voltage is high. In a further construction both the pulse shaping and diode pump circuits are modified so that both positive and negative half cycles of the input waveform can be used, Figs. 8 and 11 (not shown). In a modification of the diode pump circuit, Fig. 12 (not shown) an exponentially rising and linearly falling output waveform is obtained, Fig. 15 (not shown) with the maximum and minimum engine speeds forming the end points of the linear portion so that under fault conditions a low output is provided and the circuit thus fails safe.
Patent GB-955117-A (GB)
Title: Preparation of silicate hydrosols
IPC: C01G43/025
Filed: 1961-04-27
Abstract: Silicate sols of metals forming salts with strong monobasic acids which can be hydrolysed in acid solution the sol particles of which have the crystal structure of the orthosilicate of the metal, may be prepared by hydrolysing in aqueous medium a salt of the metal with a strong inorganic monobasic acid together with an organic compound yielding silica on hydrolysis. Aluminium, iron, titanium, zirconium, uranium and plutonium are mentioned as metals but the details and examples are given in relation to thorium, salts specified being the nitrate, chloride and chlorate.  The preferred organic compound is ethyl orthosilicate but alkoxysilanes, preferably having alkoxy groups smaller than butoxy, are mentioned.  In examples, thorium nitrate and ethyl orthosilicate are co-hydrolysed in aqueous medium (1) by electrodialysis (see Division C7), (2) by refluxing in the presence of urea, and (3) by refluxing in the absence of hydrolytic agents. After formation of the silicate sol, further addition of the organic silica-yielding compound followed by refluxing yields sols having silica-clad particles.  The sols are said (in addition to displaying the orthosilicate crystal structure), to be generally spherical and of particle size 20-300 mm  and may be treated by autoclaving, deionizing, addition of bases, e.g. sodium hydroxide, and evaporative concentration to have a conductance below 10-3 mhos./ cm., a pH of 7-10 and a total solids concentration of 4-5%.ALSO:In Example 1 a thorium silicate sol is prepared in a similar manner to the thoria sol described in Specification 924,235, employing a solution of thorium nitrate to which ethyl orthosilicate is added incrementally during electrodialysis.
Patent GB-574674-A (GB)
Title: Radio communicating system
IPC: H03K9/04
Filed: 1941-11-28
Abstract: 574,674. Pulse modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 28, 1941, No. 15380. Convention date, Nov. 29, 1940. [Class 40 (v)] A transmitter of a modulated pulse train, in which production of a pulse is advanced or retarded in accordance with a modulating wave form and its polarity, comprises a radiofrequency power amplifier RT having its anode connected over a choke X to a constant source T of direct current and shunted to earth by pair of valves 1, 2 arranged to be non-conductive only over short periods in cycles of con stant frequency alternating current from source 3, the timing of which periods is varied by the modulating source 4. The valves are fed in push-pull from source 3 of half the required pulse frequency and are normally biassed so that they are conductive alternately on the major portions of successive half-cycles, but are non-conductive simultaneously for short periods when the oscillatory potential passes through zero, pulses of radio-frequency being transmitted during these periods. The modulating wave from 4 is also applied to the grids in push-pull over a transformer secondary connected between the two secondaries which apply the potentials from 3 with a result that the production of the pulses is advanced or retarded in accordance with the modulating wave. The pulse frequency may be 15,000 p.p.s. and the modulating wave may be of telephonic, telegraphic or' other signalling current. A receiver is referred to in which the pulses in the output of a superheterodyne receiver are applied to two pulsing oscillators triggered in synchronism with the pulses to produce an output corresponding to the original modulating wave.
Patent GB-170041-A (GB)
Title: Improvements in cash tills or registers
IPC: G07G1/10
Filed: 1921-04-01
Abstract: 170,041. Ead, R. H. April 1, 1921. Tills.-Relates to an improved cash-register with a sliding-cover, and sets of sliding blades each representing certain coin values arranged so that on actuation of a blade to close the till the amount is registered on a disc through a flexible shaft. A cash-box 3<a> has a lid 3 sliding on rollers 16 on a fixed part of the frame and carries an upstanding arm 15 which, when the lid 3 is in open position, abuts against the lowest-valued actuating key b. Loosely sliding within the frame are similar set of blades 8, 9 for copper and silver, successive blades of each set being graduated in half-pence &c. in arithmetical progression and carry a single tooth 9<a> meshing with a gear 10<a> connected to a registering dial 13 by a flexible shaft 11. The blades of each set show their values back and front and overlap so that if the blade of any value is transversely moved by its actuating key b the whole of the blades of lower value are moved also. In operation if the value oi a transaction is 3d. the lid 3 is manually moved to open the till until the arm 15 on the lid stands in front of the lowest valued key, the money is then put into the till and the three-penny key transversely actuated to move the 3d., 2¢d., 2d., 1¢d., 1d., and ¢d. blades and the arm 15 in order to close the till. Six blades actuate the pinion 10<a> and a value of 3d. is shown by the dial 13 moving past a fixed pointer 12. On opening the till for a subsequent transaction the gear 10<a> is held by a ratchet the blades jumping over the teeth of the gear to prevent actuation of the register. A set of blades for gold values can be added and a transfer mechanism fitted to the registers. Different toned bells are rung on opening and closing the till.
Patent GB-1091388-A (GB)
Title: Circumferential lip seal for a rotary shaft
IPC: F16J15/32
Filed: 1966-04-06
Abstract: 1,091,388. Shaft seals. TIMKEN ROLLER BEARING CO. April 6, 1966 [Oct. 29, 1965], No. 15465/66. Heading F2B. In a shaft seal 1 comprising an elastomer sealing ring 4 housed in a casing 2 and having a sealing lip 7 urged against the shaft by a garter spring 12 seated in a groove 10 in the lip, the groove is traversed by spaced slots 11. The ring 4 is bonded to the casing 2 and has a grit excluding lip 6 engaging the shaft.
Patent GB-540478-A (GB)
Title: Improvements in electric timing devices
IPC: H03K17/28
Filed: 1940-10-21
Abstract: 540,478. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 21, 1940. No. 15530. Convention date, Oct. 21, 1939. [Class 38 (v)] Closure of a switch 17 energizes a coil 11 and charges a condenser 12 ; when the switch 17 is opened, ,the condenser 12 discharges through the coil 11 and delays the release of its armature till after a pre-determined time interval ; so that the time delay may be independent of the voltage supply, an opposition coil 14 is energized through contacts 16 when the coil 11 attracts its armature. Release is arranged to occur just when the coils 11, 14 balance each other. The time delay may be varied by adjusting resistance 30. The contacts 17 may be closed and opened by a limit device 21 as shown, the limit device also closing contacts 20 so that a resistance 13 is temporarily short-circuited to enable the condenser 12 to be charged rapidly.
Patent GB-1200515-A (GB)
Title: Expansion chamber device for warm-water heating systems
IPC: F24D3/10
Filed: 1968-04-01
Abstract: 1,200,515. Hydraulic accumulators. ATROL ARMATUREN G.m.b.H. April 1, 1968 [April 1, 1967], No. 15563/68. Heading F1P. Expansion tank device for hot water heating systems, comprises two or several chambers 1 housed within a common casing 2, each chamber being divided by a flexible membrane 3 into one part which is connected at 7, 8 to the system and another part which is in open communication, e.g. through perforations 9, with the interior of the casing 2. The casing is gas-pressurized through a filling connection 10.
Patent GB-1339942-A (GB)
Title: Gas-fired water heater
IPC: F24H1/14
Filed: 1971-05-19
Abstract: 1339942 Water heater JUNKERS & CO GmbH 19 May 1971 [25 June 1970] 15755/71 Heading F4A A gas fired water heater comprises a burner 10, and a combustion chamber 11 having a lamellar block 12 at one end thereof, the block having a serpentine pipe 121 for water passing therethrough, the surfaces of the block contacting the combustion gases being coated with aluminium by flame spraying in the direction in which the combustion gases flow. The aluminium may be thicker on the surfaces 122 of the block adjacent the pipe and further the coating may be thicker on the surfaces of the block adjacent the burner than on those remote therefrom. The wall portions of the combustion chamber may also be protectively coated.
Patent GB-333319-A (GB)
Title: Improvements in the valves of hand bellows
IPC: F04B39/10
Filed: 1929-05-22
Abstract: 333,319. Hughes, A. May 22, 1929. Check elastic valves. - A valve for hand bellows is secured to the exterior and comprises a flexible member formed as a ring c<1> to which a loose tongue c<2> is connected; the seat in which the flexible member is clamped consists of a plate a with a recess to take the flexible member and an orifice against which the tongue is seated, crossed by a bridge piece a<2>.
Patent GB-1119693-A (GB)
Title: Improvements relating to screen printing apparatus
Inventor: WATKIN KENNETH
IPC: B41F15/08
Filed: 1966-04-12
Abstract: 1,119,693. Screen-printing; printing on curved surfaces. FERRANTI Ltd. 11 April, 1967 [12 April, 1966], No. 15837/66. Heading B6C. The inner surface of a cylindrical body 10 is screen-printed by a stencilling apparatus which comprises a cylindrical screen 11 held in a tensionally adjustable manner between two supporting wheels 12 and 13 and axially traversed by a squeegee mechanism incorporating main and secondary squeegees 16 and 19. The squeegee mechanism is fixedly mounted on a rod 15 movable axially of the concentrically arranged screen and body, a movable deflector plate 20 forming part of the mechanism for flexing the main squeegee 16 away from the screen 11 after the printing stroke which takes place during the upward movement of the mechanism. The deflector plate 20 is actuated by twisting a tube 22 surrounding the rod 15, such actuation simultaneously causing the secondary squeegee 19 to contact the screen for scraping purposes during the downward movement of the mechanism. Fig. 3 (not shown), shows an adaptation of the invention for screen-printing on the external surface of the body 10.