baber/WOPTO huggingface dataset:
Patent GB-1379678-A (GB)
Title: Hydraulic coantrol systems of automatic transmission mechanisms
IPC: F16H47/08
Filed: 1972-06-21
Abstract: 1379678 Change-speed control REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 21 June 1972 [21 July 1971] 29182/72 Heading F2D In a torque-converter-driven automatic transmission on a motor-vehicle, wherein two friction clutches E1 E2 and two brakes F1, F2, introducing ratios in a planetary gear, are engaged under control of a manual valve 33, a solenoid valve 34 and three valves 35 ... 37, not described, the servo pressure being regulated in accordance with engine speed and load, the speed parameter is derived from the pressure drop #p across a calibrated orifice 38, in conjunction with a throttling valve 42 and a main pressure regulator 26, in the following manner. An engine-driven volumetric pump 20 supplies a pressure p + #p through a line 21 to the inlet side 38e of the orifice 38, the outlet 38s of which supplies a pressure p to a line 39, 31, feeding the manual selector valve 33 and also the main pressure-regulator 26. Pressure p + #p, assisted by a spring 47, produces a leftward load on the spool 420 of the throttling valve 42, whilst pressure p produces a rightward load. A throttled outlet pressure p<SP>1</SP>, in a chamber 426 and line 32, loading the main regulator 26, is controlled by the throttling valve lands 421, 422 as follows. On starting, engine speed is low and hence also is #p, whereby the throttling- valve spool 420 is maintained in its rightward position, shown, in which the chamber 426 is exhausted through a restrictor 46, so that p<SP>1</SP> is zero, and the regulator valve 26 regulates p to a maximum. With increase in speed #p increases, causing leftward shift of the valve-spool 420, which gradually throttles the restricted exhaust 46, and finally, at a predetermined speed, opening the chamber 426 and line 32, fully to the passage 39, so that pressure p<SP>1</SP> becomes equal to p and pressure regulated by the main regulator valve 26 falls to a constant value for any particular engine load. The load factor is manifested by engine intake depression acting at 25 on a throttle valve 23 which applies a pressure pc to the main regulator valve 26. A three-dimensional pressure diagram is provided in Fig. 5 (not shown).
Patent GB-870211-A (GB)
Title: Improvements in fabrication of magnetic material
IPC: H01F1/14
Filed: 1957-09-17
Abstract: In a method of producing polycrystalline sheet metal from alloys consisting of at least 92% iron and up to 5% molybdenum wherein each have the body centred cubic crystal lattice form the sheet is cold worked and caused to recrystallize in the (100)[001] orientation by annealing the sheet for about 8 hours at 800 DEG C. to 1200 DEG C.
Patent GB-1078409-A (GB)
Title: Process for preparing polyvinyl esters
IPC: C08F18/04
Filed: 1965-07-09
Abstract: Vinyl esters of aliphatic monocarboxylic acids are polymerized, optionally with minor proportions of copolymerizable monomers, in a homogeneous phase using diesters of peroxydicarbonic acid as catalyst and in the presence of 0.5 to 2 per cent by weight of the monomer of at least one monohydric, dihydric or trihydric aliphatic alcohol. Specified comonomers are acrylic and maleic esters and crotonic acid. Specified catalysts are diethyl, diisopropyl, dichloropropyl, dibenzyl and dicyclohexyl peroxydicarbonates. Specified alcohols are methanol, ethanol, ethylene glycol and glycerol.  The polymers may be used in adhesive and textile auxiliaries, and may be saponified to polyvinyl alcohols.  In examples vinyl acetate is polymerized in the presence of methanol and diisopropyl peroxydicarbonate.
Patent GB-261767-A (GB)
Title: Improvements in vessels for use in carrying out chemical or physical processes
IPC: B01J3/04
Filed: 1926-11-19
Abstract: 261,767. Trautmann, J. Nov. 19, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Resistance furnaces. - A double - walled vessel for carrying out chemical and physical reactions at high temperatures and pressures, has the outer pressure-sustaining wall protected against heat, for instance by a pressure-equalizing medium, while the inner wall, which is not affected by the pressure, is constructed to withstand the high temperature. The inner tubular wall a is electrically heated by means of a surrounding helix h. Between the inner and outer walls a, c is a space containing gas at the same pressure as that within the inner tube a. Further heat-insulation may be effected by a lining g or by packing the intermediate space with kieselguhr. In another arrangement, a part of the inner tube itself serves as heating-resistance, and is spaced at its ends from non- heated portions, so that pressure-equalization can take place through the gaps thus left, In a third construction, a narrow pressure-equalizing tube communicates with the outer jacket and with a non-heated external portion of the inner tube. In a fourth form, pressure is equalized between the same points by way of a cylinder containing a piston, diaphragm, or the like, so that reaction gases are excluded from the jacket.
Patent GB-534718-A (GB)
Title: Automatic control system for television receivers
IPC: H04N5/16
Filed: 1939-11-04
Abstract: 534,718. Television receivers. HAZELTINE CORPORATION. Nov. 4, 1939, No. 29393. Convention date, Dec. 6, 1938. [Class 40 (iii)] A television receiver comprising a signal reproducing device such as a cathode-ray tube 17, Fig. 1, having a cathode 19 and a control electrode 21, means such as the chain of devices 12, 13, 14, 15, 16 for applying to said control electrode 21 a television modulation signal having a periodically recurring level corresponding to a predetermined shade value such as the " black-level " B Fig. 2, means connected in circuit with said cathode 19 and responsive to the cathode current only during the occurrence of said level for developing a control effect, and means for utilizing said control effect for stabilizing said signal with respect to said level. As shown, the signal is fed to the control grid 21 of the cathode-ray tube through a condenser 28 in conjunction with a resistance 29 connected to a tapping point of a resistance 38 forming a bridge circuit with a tapped battery 37 and a triode 39. The grid of this triode is connected to a condenser 36 and resistance 35 and to one electrode of a diode 34, the other electrode of which is connected to the cathode 19 of the cathode-ray tube. This cathode is moreover connected to the anode of a triode 33, the grid of which is connected to line frequency generator 31 or frame frequency generator 32 or both. In addition the resistance 29 is bridged by a diode 40. The cathode-ray tube 17 should have a substantially linear response or signal-input brightness characteristic. The operation of the circuit is as follows. The television signals, Fig. 2, when rectified, are stabilized with respect to the peaks of the synchronizing pulses S by the rectifying effect of the diode 40 on these peaks producing a grid bias in the resistance 29. The triode 33 is so biassed that :it normally passes current and becomes non-conductive during the retrace periods when it receives a synchronizing pulse from the generators 31 or 32. Therefore current is passed through diode 34 only during the retrace periods. This current is smoothed by the resistance 35 and condenser 36 having a time constant greater than the line synchronizing intervals. The voltage derived therefrom is applied to the grid of triode 39 which by the effect of its anode current on the bridge circuit 37, 38 controls the grid bias of the cathode-ray tube to stabilize the black-level.
Patent GB-721836-A (GB)
Title: Improvements in or relating to process of preparing novolak resin derivatives
IPC: C14C3/20
Filed: 1951-12-17
Abstract: A synthetic tannin is made by condensing in aqueous alkaline medium (1) a novolak resin of molecular weight between 600 and 1800 obtained from phenol, cresol or xylenol and formaldehyde or a formaldehyde yielding compound; (2) an alkali metal salt of sulphurous acid (e.g. sodium or potassium sulphite, bisulphite or metabisulphite) in an amount to provide from 0.1 to 0.5 molecular proportions of combined sulphur dioxide for each aromatic ring in the novolak; and (3) formaldehyde or paraformaldehyde in an amount to provide 1-6 molecular proportions of formaldehyde for each molecular proportion of combined sulphur dioxide in said salt. Preferably the reaction mixture is heated at 30-130 DEG  C. (preferably 70-100 DEG  C.) for 75-360 minutes, after which it is cooled and acidified to pH 3.0-4.7 with glycollic plus sulphuric or phosphoric acid.  The novolaks are obtained by refluxing 2 mols. of phenol with 1.0-1.2 mols. of formaldehyde at 90-96 DEG  C. for 2-6 hours in presence of an acid catalyst, e.g. sulphuric acid.  In examples: (1), (3) and (4) a phenol-formaldehyde novolak was heated with formaldehyde and sodium sulphite; (2) a xylenol-formaldehyde novolak was heated with formaldehyde and sodium sulphite.
Patent GB-168542-A (GB)
Title: Improvements relating to duck bill and heater guards for looms
IPC: D03D49/68
Filed: 1920-10-20
Abstract: 168,542. Haworth, J. J. Oct. 20, 1920. Guards. - The ends of a duck-bill and heater guard A of the helically - coiled wire type are shaped to constitute holding-devices, which engage the heater bracket B, the resiliency of the wire enabling the ends to be displaced for attachment and detachment of the guard. The ends of the guard are shaped to suit the particular kind of heater bracket to which it is applied.
Patent GB-262110-A (GB)
Title: Improvements in and relating to methods of moulding silica
IPC: C03B23/26
Filed: 1926-11-23
Abstract: 262,110. British Thomson-Houston Co., Ltd., (Assignees of Miller, L. B.). Nov. 24, 1925, [Convention date]. Forming silica - glass articles. - Relates to a method of producing a tubular blank of silica having a thick wall and a smooth interior surface. The invention consists in heating the silica to plasticity, forcing a heated core or moulding-member into the silica to form the bore, and then immediately chilling the plastic mass in order to prevent chemical reaction between the silica and the material of the moulding- member. Apparatus for carrying out the method comprises an electric resistance furnace 1, of the kind described in Specification 189,926, surrounding a tubular container 2 within which a refractory crucible 3 is suspended. The crucible 3 is attached to a tubular support 5 having at its upper end a cap 7 which rests on the tube 2. After a charge 4 of silica has been heated to plasticity, a core member 8, having a smooth exterior surface, is pushed down into the plastic mass and the crucible is immediately removed from the furnace to allow the mass to chill. A cylindrical member, which fits into the interior of the crucible 3, may also be forced into the plastic silica in order to produce a blank having a smooth exterior surface. The blank is particularly adapted to be drawn cut into thin-walled tubing.
Patent GB-964019-A (GB)
Title: Improvements in or relating to the measurement of pressure differentials
Inventor: RICKARDS FRANCIS CECIL
IPC: G01L13/02
Filed: 1961-08-16
Abstract: 964,019. Pressure gauges. GEORGE KENT Ltd. Aug. 8,1962 [Aug. 16, 1961], No. 29636/61. Heading G1L. In a pressure differential measuring unit in which the fluid pressure difference in two chambers 3, 4 effects movement of a pair of liquid filled diaphragms or bellows 13, 14, interconnected through a passage 37, and which movement is transmitted to an indicator through a shaft 39 by a lever 40 connected to the bellows 14 the expansion and contraction with changes in the temperature and static pressure experienced by the liquid is taken up by a liquid filled diaphragm or bellows assembly 45 arranged between the bellows or diaphragm 14 and the end of the lever 40.
Patent GB-248844-A (GB)
Title: Improvements in and relating to pistons for internal combustion engines
IPC: F02F3/22
Filed: 1924-12-12
Abstract: 248,844. Richardsons, Westgarth & Co., Ltd., and Burn, W. S. Dec. 12, 1924. Pistons; cooling; attaching to rod.-In a piston of the type comprising two identical end portions 1, 2 supplied with cooling fluid through a hollow piston-rod, the water spaces of the two portions are separate, each being provided with an inlet 7 and an outlet 8. The end portions 1, 2 may be separated by a diaphragm 24 carrying packing rings engaging the ends of two trunk portions 3. In a modification the diaphragm 24 is formed integral with the trunk portions, and in a further modification the diaphragm is dispensed with and the trunk portions 3 are formed integral with the end portions 1, 2. The end portions are recessed to receive a conical collar 5 on the rod and a nut 6, cooling fluid to be supplied to the piston through the hollow piston-rod and is discharged through a pipe in the interior of the piston-rod.
Patent GB-670222-A (GB)
Title: Improvements in trawl nets
IPC: A01K73/045
Filed: 1949-11-22
Abstract: 670,222. Trawl nets. LARSSON, K. H. Nov. 22, 1949, No. 29932/49. Class 48. A floating trawl net towed by a single boat comprising two trawl doors 15 has a plurality of shearing boards 18 pulling upwardly on the head-rope 16 and spaced therealong each attached thereto by a single cord, and a plurality of shearing boards 19 exerting a downward pull attached by single cords at spaced points to the foot-rope 17. The doors, which may be rectangular or shaped as shown in Fig. 7, have a pressure surface of circular or varying curvature and floats or.hanging weights 20 or boards with an upwardly or downwardly shearing effect are attached to the doors; alternatively weights 21 which drag along the sea bed are attached by wires 22 of adjustable length to the doors. In order that the doors may be inclined at a variable angle to the vertical two equal cables 25, 26 leading from the rear edge of the door are secured to two holes 28, 29 in a ring 27 and the net warp 13 is selectively secured to any one of a number of holes 30 in the ring. The equal cables 25, 26 may also be selectively attached.to holes 31 in the rear edge of the board. The towing warp 14 is connected to the central horizontal line of the door by a crow's foot which is arranged substantially at right angles to the crow's foot formed by the equal cables 25, 26 connecting the door to the net warp and which comprises a front chain 32 fixed to the door and a back chain 33 fixed to a coupling plate 37 having a row of equally spaced holes which cooperate for the reception of a lock pin with spaced aligned holes 39 in parallel rails secured to the door to give a vernier adjustment. The struts 11 at the wings of the net have plain front surfaces and curved back surfaces and the two fastening rings 45, 46 at each end are positioned so that the struts shear apart.
Patent GB-250495-A (GB)
Title: Improvements in driving mechanisms for amusement devices
IPC: A63G7/00
Filed: 1925-11-27
Abstract: 250,495. Spillman, A. Nov. 27, 1925. Roundabouts.-In amusement apparatus of the type in which cars are engaged and propelled by an endless flexible driving means round a stationary platform, the means by which each car is engaged by the cable are released from the cable as the car approaches the cable-driving means and the car is propelled by its interconnection with the other cars. The cars 14a are mounted on trucks 4 from which studs 6 pass downwards through an endless slot 3 in the platform, and rollers 7 on the studs engage angleirons 8 under the platform. The lower ends of the studs 6 are connected by a bar 9 carrying forks 17 which engage an endless cable 28, a friction pad 19 being inserted at the root of each fork. Adjacent cars are connected by rods 13 having a ball-and-socket joint with the ends of the bars 19. The cable 28 is driven by a pulley 24, a tensioning pulley and a jockey pulley 27 being provided. A hook 20 on the fork 17 prevents the cable falling away from the fork. The cars 14a are free to swing round on the trucks 4, the rods 13 ensuring that they are kept sufficiently far apart. The platform 1 is oval, and is preferably undulating. Reference had been directed by the Comptroller to Specification 254,230.
Patent GB-806605-A (GB)
Title: Improvements in conveyor rollers
IPC: B65G39/04
Filed: 1955-10-20
Abstract: 806,605. Endless belt conveyers. KIDD, F., and KIDD, T. D. Oct. 19, 1956 [Oct. 20, 1955], No. 30009/55. Class 78 (1). The shaft 18 of a set of troughing rollers consists of a resilient bar or tube preformed to bowed configuration the ends of which extend slidably through an aperture formed diametrically in a cylindrical trunnion member 20 mounted in a yoke 22. Each end 19 is connected rigidly to a sleeve 21 on the outer end of which is threaded a nut 24. An adjustable compression spring 23 is placed between it and the recessed outer side of the trunnion. Each roller element 25 consists of sheets 26 of soft rubber, or a polyvinyl chloride plastic, which are secured together by rivets 27 passed through metal end-plates 28. The components may also be adhesively bonded. Each element is bored centrally to receive a bearing sleeve 29 of hard rubber or nylon which is prevented from moving longitudinally by a rib 30. This sleeve may be bonded to the sheets 26 and its ends may be flared so that it engages with the shaft near its centre only. Flexible dustexcluding sleeves 32 extend from each element 25 to the next and end caps 33 seal the gap between each sleeve 21 and the adjacent sleeve 29. Each sleeve 32 may be composed of two concentric tubular members which are spaced apart and between the end portions of which extends an annular flange provided at each end of the sleeve 29. In a modification, Fig. 5, each bearing sleeve is in two parts 38, each of which has a flange 39 at one end. In another modification, Fig. 6, a metal ferrule 40 is placed between the sheets 26 and the sleeve 29. The flanged ends of the ferrule may have inwardlyextending projections which prevent longitudinal movement of the sleeve, or pins may be passed through the flange for this purpose. In a further modification, Fig. 8, the roller elements 25 are formed of metal or other rigid material and may be bonded to non-metallic bearing sleeves 29. Dust-excluding sleeves 32 extend within recesses 48 at each side of the element. Each end member 49 has a helicallyarranged belt engaging rib 50 for maintaining the belt in central position.
Patent GB-617813-A (GB)
Title: Improvements in luggage carriers of the platform type as used on cycles
IPC: B62J7/08
Filed: 1946-10-09
Abstract: 617,813. Luggage carriers. MIDLAND GEAR CASE CO., Ltd., and SMITH, W. B. Oct. 9, 1946, No. 30090. [Class 136 (i)] [Also in Group XXV] A luggage carrier of the kind having a spring- loaded flap hinged to a mounting pivoted to the carrier to allow the hinged end to be raised or lowered has means for securing the mounting to the carrier in the adjusted position. As shown in Fig. 1, the flap 7 of the carrier 1 is hinged at the ends 7a to a cross-bar 6 to the ends of which arms 5 are connected. A torsion spring 8 passed round the bar 6 engages the arms 5 and an abutment rod 9. The arms 5 are pivoted to the carrier side-bars at 4, and each arm has a quadrant slot 10 with seatings 11 for adjustment of the mounting of the arms on the carrier. The side-bars 2 of the carrier are provided with a stud 13 which projects into a seating and is secured by a wing-nut, the boss of which fits into the seating.
Patent GB-883367-A (GB)
Title: Improvements in or relating to screened electrical apparatus
Inventor: DRYBROUGH DAVID ALLEN SCOTT
IPC: H05K9/00
Filed: 1959-09-03
Abstract: 883,367. Electrical screening. GENERAL ELECTRIC CO. Ltd. Sept. 12, 1960 [Sept. 3, 1959], No. 30112/59. Class 37. An electrical screening box, particularly for housing a filter, comprises a rigidly constructed shallow oblong metal box 13, divided into compartments 14 by metal partitions 15, the partitions being soldered to the box and each other. Each of the units 1, 2 comprising the filter is housed in a separate compartment, the input and output sections being separated by one empty compartment. The units are held in position by filling the compartments with potting composition and then the entrance to the compartment is closed by soldering metal foil 21 across it. A metal lid 22 is placed on box 13 and secured by soldering.
Patent GB-494622-A (GB)
Title: Improvements in steam generating systems
IPC: F22B35/10
Filed: 1937-11-03
Abstract: 494,622. Valves. CLARKSON, A. Nov. 3, 1937, No. 30152. [Class 135] [Also in Groups XII and XIII] In a steam generating apparatus comprising a generator A through which water is circulated and partially converted into steam, a pump F delivering an excess of feed water to the generator, and a separator C for separating the mixed steam and water, the water discharged from the separator regulates the fuel supplied by a pump D to the burner B heating the generator. The pump D supplies fuel to the burner through a pipe 61 having T-fittings 62, 63 communicating respectively with a chamber 65 normally closed by a spring-pressed valve 66 and a chamber 72 fitted with a manually operated escape valve 78 and a spring-pressed escape valve 83. The pump F supplies water to the generator through a casing K containing a diaphragm 92 operating a valve 93 formed with ducts 96, 97 communicating with the chamber below the diaphragm. If the feed water is under sufficient pressure the diaphragm opens the valve 93 and allows the water to pass through a pipe 99, heat-expansible tubes 103, 104 and a pipe 111 to a heat-exchanger tank 55 and then through a pipe 112 fitted with a restricting valve 113, a heat-expansible tube 115, and pipe 119 to the generator A. The steam from the separator C issues through a pipe 28 fitted with a pressure-reducing valve 29 and the water is conveyed to the tank 55 where it heats the feed water. The tubes 103, 104, are secured at their upper ends to a fitting 108 and at their lower ends to the casing 73 of the valve 83 while the tube 115 is secured at its upper end to the fitting 108 and at its lower end has a projecting stem engaging the valve 83. An increase in the temperature or quantity of the water discharged from the separator C to the tank 55 increases the temperature of the water passing through the tube 115 and causes the valve 83 to close, thereby increasing the supply of fuel to the burner B. When the feed water pressure fails the valve 93 is closed by a spring 101 and the lower pressure existing beyond the valve will be communicated by the ducts 96, 97 to the space below the diaphragm 92. The closure of the valve 93 lifts the valve 66 and bye-passes the fuel supply of the burner B which is of the type fitted with a valve opening at a predetermined minimum pressure. A restricted shunt pipe connection 122 allows part of the feed water leaving the tank 55 to be delivered to the generator without passing through the tube 115.
Patent GB-703515-A (GB)
Title: Improvements relating to coke extractors for vertical retorts for the carbonisation of coal and the like
IPC: C10B33/02
Filed: 1951-12-27
Abstract: 703,515. Discharging vertical retorts. WESTS GAS IMPROVEMENT CO., Ltd., WEST, F. J., and WEST, E. Nov. 14, 1952 [Dec. 27, 1951], No. 30192/51. Class 51 (2) A coke extractor for vertical retorts comprises a rotary pocketed drum formed with two pockets d and e having cylindrical walls f and g and carried by trunnions i and in the coke chamber walls, and a pivoted grid n closing a space in the floors of the pockets. A sprocket wheel drive secured to the pinion i turns the extractor intermittently or continuously, and the grid n is held by a bolt p carrying a plate r extending co-axially through the trunnion j to engage a hole o in said grid, the bolt p being released by .loosening screws q extending through holes in said plate r and engaging a fixed bearing member s. Each pocket has a leading wall t and a trailing wall u, the former being in vertical alignment with the retort side wall in the receiving position, Fig. 1, and the tops of the walls are inclined to the axis of the extractor giving a cutting action to the trailing wall as it turns. A gap v between the extractor and the retort wall, Fig. 1, is closed by an insert wand a bracket x.