baber/WOPTO huggingface dataset:
Patent GB-1481931-A (GB)
Title: Valve chests
IPC: F01L3/12
Filed: 1975-03-20
Abstract: 1481931 Valve chests; cooling SOC D'ETUDES DE MACHINES THERMIQUES 20 March 1975 11557/75 Heading F1B An overhead valve chest for an I.C. engine is of integral moulded construction and comprises a cage formed with an annular valve seat cooling chamber and having a plurality of arms or webs, a valve stem guide defining an annular cooling chamber which communicates with the valve seat cooling chamber through at least one duct formed in at least one of the webs, and defining at least one hole formed during the moulding of the valve chest and being located in an outer wall of at least one of the cooling chambers, the hole being closed off by a welded or brazed plug. The chest comprises a cage including a double-walled valve seat cooling chamber connected by four webs 3, 4, 5 and 6, to the outer wall 27 of a cooling chamber around the valve stem guide. The outer wall of the valve seat cooling chamber is cast with eight openings 8 - - - 15, which are used for removal of the cores, and through at least one of which a hole 42 is drilled through a web to provide a passage for flow of cooling fluid, before all the holes are sealed by plugs which are welded or brazed in. The valve guide cooling chamber includes a diametral partition 25 through which two holes 40 and 41 are drilled by inserting a drill through two of four holes 32 - - - 35, which are formed during casting and which are also sealed by welded or brazed plugs. In the upper end-wall of the valve guide cooling chamber two generally semi-circular apertures 36 and 37 are formed during casting and these are sealed by welded or brazed plugs 38 and 39.
Patent GB-633646-A (GB)
Title: Improvements in or relating to processes of preparing isopropenyldiphenyl and the improved products resulting therefrom
IPC: C07C1/24
Filed: 1947-04-30
Abstract: Copolymers of a resinous or rubbery type are prepared under polymerizing conditions from isopropenyldiphenyl and at least one other polymerizable compound having ethylenic unsaturation. Examples specified of the latter are styrene (with, for example, 0.01 to 65 per cent of p-isopropenyldiphenyl), acrylonitrile, methyl methacrylate, butadiene (with, e.g. 25 per cent of p-isopropenyldiphenyl), chloroprene, other substituted butadienes, nuclear substituted styrenes, acrylic and methacrylic acid and their derivatives, and vinyl ketones, ethers and esters. Non-rubbery polymers may be obtained by polymerization in mass with a butadiene compound.  Polymerization in general may be performed in mass, in emulsion, in aqueous dispersion, or in solution.  In the examples: (3), (4), butadiene is polymerized in emulsion with p- and o-isopropenyldiphenyl, respectively; (5), (7) p-isopropenyldiphenyl is emulsified in mass by heat with styrene and acrylonitrile, respectively; (6) styrene, acrylonitrile, and isopropenyldiphenyl are copolymerized in mass.  In the emulsion polymerization there are used, modifiers such as dodecyl mercaptan, carbon tetrachloride, or trichloropropionitrile, emulsifiers such as soap or lauryl sulphate, and polymerization catalysts such as potassium persulphate, and benzoyl or hydrogen peroxide.  The butadiene copolymer, containing an anti-oxidant, is milled and cured with carbon black, stearic acid, sulphur, and a vulcanization accelerator.ALSO:An o-, m-, or p-isopropenyldiphenyl is prepared by dehydration of the corresponding o-, m-, or p-a  : a -dimethylphenylbenzylcarbinol.  The carbinol is prepared by treatment of either o-, m-, or p-phenylacetophenone with a methyl magnesium halide, or an o-, m-, or p-diphenyl magnesium halide with acetone.  The dehydration is carried out in the vapour phase and in the presence of an extended-surface catalyst, e.g. alumina, aluminium phosphate or silicate, silica, calcium sulphate, boron or aluminium carbide, at temperatures above 225 DEG  C., e.g. 250-320 DEG  C.  A diluent gas, e.g. nitrogen, may be present in the dehydration, and the carbinol may be introduced mixed with a solvent, e.g. dioxan.  In the examples: (1) a  : a -dimethyl-p-phenylbenzyl alcohol is prepared from methyl magnesium bromide and p-acetyldiphenyl, and dehydrated to p-isopropenyldiphenyl; (2) a  : a -dimethyl-o-phenylbenzyl alcohol is prepared from diphenylmagnesium iodide and acetone, and dehydrated to o-isopropenyldiphenyl.
Patent GB-603438-A (GB)
Title: Improvements in or relating to electrical equipment on aircraft
IPC: B64C11/44
Filed: 1945-05-07
Abstract: 603,438. Variable-pitch propellers. FAIREY AVIATION CO., Ltd., and FORSYTH, A. G. May 7, 1945, No. 11621. [Class 114] [Also in Group XXXV] The propeller assembly carries the stator coils f of an electric generator attached to the engine casing, and the armature h attached to the propeller boss through an electromagnetic coupling t, u. When this is open, and current is supplied from the battery 34 the relative movement of the rotor and armature alters the blade pitch through epicyclic gearing and worms 16. Direction and rate of movement are controlled by hand-operated switches 40, 42 and 41, and governor controller switches 35 and 36, the latter maintaining constant engine speed. Limit switches 23, 24, 25 and 26 operated by cams on the worm shafts limit movements for fine, coarse, feather and reverse pitch positions. An auxiliary governor 37 prevents "overrevving " or " under-revving " of the engine by sudden throttle movements by the pilot, by cutting-out resistances 53 or 56 to obtain quick pitch-change movements. The switch 33 controls output of the electrical device when this is used, with the electro-magnetic coupling closed so that it operates as a generator to supply heating coils in the propeller or electric power for the cabin. Specification 603,456 is referred to.
Patent GB-270345-A (GB)
IPC: H01J19/66
Filed: 1927-05-02
Abstract: 270,345. Loewe, S. April 30, 1926, [Convention date]. Vacuum tubes.-A cap 1 for a multiple valve has contact pins 2 mounted at the periphery so as to separate them and reduce capacity. Bayonet pins 8, preferably unevenly spaced, are provided on the cap so as to ensure correct insertion of the valve in a holder. The cap is of insulating material, and is of large diameter, the valve being secured by cement 4, and the end closed by an insulating plate 6 with a central button 7. The pins may be spaced unevenly, and screwed or cast in the cap.
Patent GB-375473-A (GB)
Title: Friction clutches
IPC: F16D13/71
Filed: 1931-04-20
Abstract: 375,473. Helical springs. DEHN, F. B., 103, Kingsway, London.-(Borg & Beck Co.; 6558, South Menard Avenue, Chicago, U.S.A.) April 20, 1931, No. 11693. [Class 108 (iii).] To reduce heat flow through the helical springs of a friction clutch, the springs rest in cups 36, Fig. 6, bearing on conical bosses 35 of the presser-ring 4 of the clutch solely by points 37. In a modification, Fig. 10, the springs rest on and are air-spaced from the ring 4 by ribs 39, being located by external lugs 40.
Patent GB-988071-A (GB)
Title: Method and apparatus for false twisting yarn
Inventor: HUNT FRANCIS NEIL
IPC: D02G1/08
Filed: 1960-04-02
Abstract: False-twist is produced in a continuously travelling yarn which enters, pursues and emerges from a closed path.  At the region of entry and exit from the path, the entering and emerging portions of yarn pass at least part way around one another with each portion frictionally engaging the other so that in its forward travel each portion rotates or twists the other.  A twist-setting medium e.g. heat or a liquid, may be applied to the yarn approaching the entry and/or exit so that false-twisted monofilament or multifilament yarn will acquire twist liveliness or crimp.  The false-twist may be supplementary to a false-twist imparted to the yarn by its travel through the bore of a hollow rotating spindle which carries two pulleys, rollers, pegs or like guides rotating about two parallel axes and enabling the yarn to travel in a closed path at one end of the spindle and rotating therewith.  Setting medium may also be applied to the yarn on its approach to the spindle.
Patent GB-934103-A (GB)
Title: Automatic direct current voltage regulator
IPC: G05F1/33
Filed: 1960-04-04
Abstract: 934,103. Electricity supply; automatic voltage control systems. WESTINGHOUSE ELECTRIC CORPORATION. April 4, 1960 [April 13, 1959], No. 11767/60. Class 38 (4). The A.C. supply to a rectifier is controlled by a saturable reactor in series with the primary of a booster transformer, the secondary of which is in series with the rectifier. The bridge rectifier 70 is energized by the secondary of a main supply transformer 20 and by the secondary of the booster transformer 50. The primary of the booster transformer 50 is energized via a saturable reactor 40 from a tertiary winding on the main transformer 20. The D.C. control winding may be energized in an unspecified manner, or it may be energized by a magnetic amplifier 60 in accordance with the difference between the output voltage of the rectifier 70 and a reference voltage derived from an unspecified source 75. In another embodiment, Fig. 2 (not shown) a three-phase main transformer supplies threephase full-wave rectifier through three booster transformers, similarly controlled by three saturable reactors. In another three-phase embodiment, Fig. 3 (not shown), the booster is connected to the primary of the main supply transformer instead of to the secondary.
Patent GB-691576-A (GB)
Title: Improved mounting or connector strip
IPC: B60J10/02
Filed: 1951-05-21
Abstract: 691,576. Mounting strip for glass &c. panels. GENERAL MOTORS CORPORATION. May 21, 1951 [June 10, 1950], No. 11772/51. Classes 20(iii) and 20(iv) An integral resilient mounting strip for panes &c. 10, 11, comprises a main body portion 5 and two wing portions 15, 17 forming longitudinal grooves 12, 13 for the panel edges, a further longitudinal groove 25 into which one of the wing portions 17, can be bent. and a strut 40 which can be bent to close the groove 25 and to abut under compressive stress against a stiffened edge 30 of one wing portion, 17, and which is connected adjacent the groove 25 by a flexible neck 41 to the other wing portion 15, which also has a stiffened edge 31 against which the adjacent edge 42 of the strut bears when under stress. The glass pane 10 preferably fits snugly in groove 12 without spreading the wings 15, 16. Groove 13 tapers towards its base 14 which is of less width than panel 13 so that. the corners of the panel embed slightly in the rubber and force wing 17 outwardly into groove 25. The strut 40 is rounded and shaped at the end surfaces 42, 44 so as to conform with the rounded pockets 43, 45 of the portions 31, 30, and force the wings 15, 17 into panels 10, 11 in the direction of arrows X, Y, when the outer pointed edges 50, 51 are pressed into tight contact with the panes. Reference has been directed by the Comptroller to Specifications 529,527 and 635,443..
Patent GB-1065605-A (GB)
Title: Novel 5-propenylidene-debenzocycloheptatriene derivatives and a process for the preparation thereof
IPC: C07C49/697
Filed: 1964-06-26
Abstract: Novel compounds of formula <FORM:1065605/C2/1> wherein A1 represents a vinyl group which may contain one or more lower alkyl substituents, and Hal represents a 10- or 11-halogen substituent, and wherein the broken line denotes that the alkyl group attached thereby is optional, are prepared by reacting a 10- or 11-halodibenzo[a,d]cyclohepta[1,4,6] - trien - 5 - one with the appropriate Grignard reagent, hydrolysing the product, and dehydrading the 10- or 11-halo-5-hydroxy-5-alkenyl-dibenzo[a,d] cyclohepta[1,4,6]triene obtained.
Patent GB-330068-A (GB)
Title: Improvements in switch mechanism for electrically operated musical instruments
IPC: G10F1/18
Filed: 1929-04-17
Abstract: 330,068. Dehn, F. B., (Mills Novelty Co.). April 17, 1929. Organs combined with other instruments; keyboard stringed instruments. - Two electrical instruments are played from the same keyboard or the like, special switch mechanism being provided for throwing in the second instrument. The organ attached to a junction board 36 is played from a lowvoltage keyboard 37 which also controls, on operation of the switch device 38, a mechanical violin comprising fingering devices 23 and rotary bows 22 driven by a motor 28. To connect the violin, a starting switch 39 in a low-voltage circuit 42, 45 is closed, energizing a magnet 43 which closes contacts 55 in a high voltage alternating circuit 58, 61 provided with a rectifier 59. This energizes magnets 64 which close the special switch 38. The bow motor 28 is thereupon energized, through lead 62, end contact 78 of switch 38, and leads 81, 82, 63. Depression of a key 37 will then energize a magnet 83 (through leads 42, 89, a contact 78 of switch 38, and lead 45) which in turn closes a contact 115 in the high-voltage circuit operating fingering and bow-depressing magnets 35, 85 through lead 62, end contact 78, and leads 81, 80, 63. The switch 38 comprises a series of fixed contacts 66, mounted on pivots 98 on an insulating bar 99 and arranged between guides 103, and a series of contacts 78 carried by an insulating bar 96 which at one end is connected by links 76, 74 to a fixed pivot 75 and at the other is guided by a pin and slot. On energization of the magnets 64, the armature 67 by contact with a pin 71 on a bar 72 connected to the link 74, moves the contacts 78 into contact with the contacts 66. The magnets 83 (in two tiers), 43 and 64 are mounted on one frame. Specifications 234,258 and 235,410 are referred to.
Patent GB-1500345-A (GB)
Title: Vehicle control systems
IPC: G05D1/08
Filed: 1976-03-15
Abstract: 1500345 Automatic control of submersible craft BRITISH AIRCRAFT CORP Ltd 15 March 1976 [22 March 1975] 12070/75 Heading G3N A control system for a vehicle, e.g. a submersible having a plurality of thrust units which can be turned to vary the thrust direction and also have their thrust individually controlled has a first con-' troller for longitudinal and lateral movement which operates by controlling the direction and group thrust level and a second controller for yaw movement which controls the individual thrusts of each unit such that there is no effect in the longitudinal and lateral directions by a desired yawing movement is yielded. In the system shown the thrustors 1, 2, 3 are mounted at the corners of an equilateral triangle and can be bodily swivelled by actuators 4, 5, 6 under the control of valves 7, 8, 9. The thrust of each thrustor is varied by valves 10, 11, 12. In the remote console a joystick 23 operates on orthogonally mounted potentiometers 24, 25 to give fore and aft TF and sideways Ts demands which arc processed in 28 to control the thrust level and in 32 to control the angle of the thrustors. A feedback signal on line 17 provides the actual angle of the thrustors. A further channel controlled by potentiometer 34 provides a yaw rate demand which is compared with a yaw rate signal from a rate gyro and intigrated to give a yaw moment demand signal which passes through calculator 39 to provide thrust demand signals on lines 40, 41, 42 which are added to the demand from calculator 28 to give thrustor control signals on lines 20, 21, 22.
Patent GB-496483-A (GB)
Title: Portable electric drills and and the like
IPC: B23B45/00
Filed: 1937-04-28
Abstract: 496,483. Motors ; snap-action switches. DESOUTTER BROS., Ltd.,and DESOUTTER, C. April 28, 1937, No. 12113. [Class 38 (v)] [Also in Group XXXV] A snap - action toggle switch has common spring means operating the toggle and also effecting the return of the operating trigger 71 when pressure is released and is characterized in that the switch part is formed conductive and that one lead for the current passes to the pivotal means therefor. The trigger which embraces a brush-holder is pivoted at 72 ; depressions 63 in a contact member carried by a stationary part form the fulcrum points of the rocking switch plate and a spring member connected to the brush-holder forms the other contact member.
Patent GB-795042-A (GB)
Title: High speed, print-out emulsions
IPC: G03C1/49
Filed: 1956-04-20
Abstract: 795,042. Photographic emulsions. GENERAL ANILINE & FILM CORPORATION. April 20. 1956 [May 17, 1955], No. 12154/56. Class 98(2) A photographic print-out emulsion of particular use in radiation monitoring badges is prepared by reacting aqueous silver nitrate with aqueous potassium bromide and sodium chloride in aqueous gelatin, chilling the mixture to set it. washing out excess water-soluble salts, remelting the emulsion and adding either an aqueous citric acid solution followed by an aqueous silver nitrate solution or an aqueous solution containing both citric acid and silver nitrate. The emulsion produced may be held at 32‹C. for 1¢ hours and then coated on a paper base.
Patent GB-967079-A (GB)
Title: New steroid compounds and their preparation
IPC: C07J75/00
Filed: 1962-03-29
Abstract: The invention comprises compounds having the formula: <FORM:0967079/C1/1> (where R3O represents an hydroxyl group or an acyloxy residue derived from an inorganic mineral acid or an organic carboxylic acid), their non-toxic water-soluble salts, 3a -acyloxy-20, 20-bis-diaralkylphosphatomethylene-21-hydroxy -5b - pregnan -11- ones and processes for the preparation thereof in which a 3a -acyloxy-20, 20-bis-hydroxymethylene -21- hydroxy -5b - pregnan -11- one wherein the acyl radical is derived from an organic carboxylic acid, is reacted with an aralkyl halogenophosphate to form the corresponding 3a -acyloxy-20, 20-bis-diaralkylphosphato-methylene-21-hydroxy -5b - pregnan -11- one, which is then subjected to hydrogenolysis to yield the corresponding 3a -acyloxy-20, 20-bis phosphatomethylene -21- hydroxy -5b - pregnan -11- one. Alternatively a 3a -acyloxy-20, 20-bis-hydroxymethylene -21- hydroxy -5b - pregnan -11- one wherein the acyl radical is derived from an organic carboxylic acid is reacted with a functional derivative of phosphoric acid e.g. POCl3 to yield the corresponding 3a -acyloxy-20, 20-bis-phosphatomethylene -21- hydroxy -5b - pregnan -11- one. Specification 967,078 is referred to.
Patent GB-1073786-A (GB)
Title: Containers incorporating dehydrating devices
IPC: B65D75/34
Filed: 1965-03-23
Abstract: 1,073,786. Drying air in confined spaces. PARTICIPATIONS ET PROCEDES INDUSTRIELS S.A.H. March 23, 1965 [March 26, 1964; May 27, 1964], No. 12242/65. Heading B1L. [Also in Division B8] A container incorporating a dehydrating device e.g. for preserving medicinal products is formed of two layers of material, at least one of which is moisture in permeable, the major surfaces of the two layers being parallel and being sealed in face to face contact at the edges of the container, which edges are parallel to the major surfaces, one of the layers containing an identation in which a dehydrating device is contained. The containers may be manufactured continuously from webs with transverse and longitudinal welding. These webs of dehydrating devices, in the can where one layer is moisture permeable, may be used as the second impermeable layer in bands of medicinal products. The container may receive both a dehydrating agent and a product in which case both layers are moisture-impermeable and a rib or a layer moisture permeable material is provided internally of the container for keeping the product and dehydrating agent apart.
Patent GB-796290-A (GB)
Title: Improvements in or relating to fuel supply systems for engines
Inventor: SYSON RICHARD HENRY
IPC: F02D9/00
Filed: 1955-04-28
Abstract: 796,290. Spray carburetters. ENGLISH RACING AUTOMOBILES, Ltd. March 26, 1956 [April 28, 1955], No. 12270/55. Class 7(3) '[Also in Group XXIX] A device for controlling the supply of fuel from a pump to the induction tract of an engine utilizes an enginedriven air pump evacuating a chamber to produce a variable air pressure that varies approximately as the square of the engine speed. A fuel pump 17 operated by an engine driven eccentric 19 and pumping fuel from a tank 20 and filter 21 through a pipe 22, fuel metering unit 11 and pipe 53 to an injector 12 in the induction tract 15 has combined with it a pump comprising a diaphragm 25 which evacutes air from a vacuum bell 28. Atmospheric air enters the bell 28 through a hole 30. filter 31 and needle valve 29 which is adjusted by a capsule 32 in accordance with the temperature in the induction tract 15. The arrangement causes the pressure in the bell 28 to differ from that of the atmosphere by an amount proportional to the square of engine speed, with an adjustment for induction tract temperature. This pressure difference is applied to a diarhragm 34 which is connected to a second diaphragm 40 and a needle valve 50 in the fuel passage. The diaphragm 40 is subject to the pressure difference across a needle valve 42 whereby the valve 50 is adjusted in order to maintain a pressure drop across the valve. 42 proportional to the square of engine speed. The flow through the valve 42 is thus proportional to engine speed, and corrections are made for induction tract temperature as described above, induction pressure action on the outside of a bellows 56 which adjusts the valve 42, and exhaust back pressure acting within a lower compartment of the bellows 56 below a dividing wall 58. A spring-loaded blow-off valve 49 is situated just before the valve 50. An adjustable spring stop may be fitted to enable the diaphragm actuated fuel valve to be set for idling and for cold starting.
Patent GB-716067-A (GB)
Title: Improvements in or relating to disc brakes for vehicles
Inventor: MACE THOMAS KEMP
IPC: F16D55/228
Filed: 1952-05-15
Abstract: 716,067. Disc brakes. GIRLING, Ltd. May 14, 1953 [May 15, 1952], No. 12285/52. Class 103(1) In a spot-type disc brake the stationary housing comprises two arcuate steel forgings each incorporating bores forming cylinders on one side of the disc, the forgings being welded on copperbrazed together at their meeting faces which lie in the median plane of the brake disc, and two arcuate end plates welded or copper-brazed to the end surfaces of the respective forgings, one end plate being extended inwardly for securing the housing to a stationary part adjacent to the brake disc to take the torque on the housing when the brake is applied. Two arcuate steel forgings a and' b each incorporating three angularly spaced bores c forming the cylinders on one side of the brake disc d are welded or copper-brazed together at x. Arcuate end plates e and f, provided with openings h in axial alignment with the bores to facilitate machining of the said bores, are welded or copperbrazed to the end surfaces of the respective forgings, and the end plate f is secured to a non- rotatable portion of the axle casing. Friction pads k are operated to engage the rotatable disc d by hydraulic pressure acting on the pistons 1; each provided with a cup seal m. The pads may be renewed when worn by removal of the end plugs j. The outer ends of the cylinder bores are connected by slots n machined in the outer face of each forging and liquid is fed to the cylinders through a longitudinal bore p into which is fitted a liner q to avoid risk of leakage at the joint between the the forging. Specification 688,382 is referred to.