baber/WOPTO huggingface dataset:
Patent GB-1134256-A (GB)
Title: Improvements in and relating to a hydraulically operated opening and closing device for doors or the like
Inventor: YOKOTA KATUTARO
IPC: E05F15/04
Filed: 1966-11-11
Abstract: 1,134,256. Hydraulically operated door operating device. ZENTSU DENKI KOGYO K.K. 11 Nov., 1966, No. 50667/66. Heading E2M. An hydraulically operated opening and closing device for doors as illustrated with reference to Fig. 1, comprises a cylinder 16, a pair of pistons 14, 14' interconnected by a piston rod 12 reciprocable in said cylinder, a lug 10 formed centrally of said piston rod, a bifurcated lever 11 engaging at the forked end thereof with said lug and the other end being connected to door-moving means, a pump 32 for supplying pressure fluid to the cylinder and having a pair of discharge ports 21, 31 each communicating with one of a pair of pressure fluid chambers 1, 17 formed between the opposite wall members of the cylinder and said pistons, and a motor 23 for reversibly driving said pump, wherein each of said pistons has a one-way control valve 26 operative to discharge part of the pressure fluid from one of said pressure chambers 1 into an intermediate chamber 29 formed in the cylinder by said pistons as percussive force is applied to the piston from the side of said pressure chamber, and wherein each of said pistons has another one-way control valve 5 operative to release the pressure fluid stored in the intermediate chamber into said pressure chamber when said chamber is under reduced pressure, and wherein the cylinder is formed with a longitudinal groove 13 along the inner wall member 16 thereof, said groove being operative to communicate one of said pressure chambers with said intermediate chamber as the piston is displaced in one direction or the other and to discharge part of the pressure fluid therethrough to adjust the speed of displacement of the pistons.
Patent GB-1118220-A (GB)
Title: Process for the dyeing of synthetic polyamides
Inventor: GUNTHARD JACQUES
IPC: C09B1/34
Filed: 1965-11-30
Abstract: Hydrophobic synthetic linear polyamides are dyed from a weakly acid to neutral dyebath with acid dyes of formula:- <FORM:1118220/D1-D2/1> in which R is an alkyl group of 1-6 carbon atoms, or a cycloalkyl group which may be substituted, X is hydrogen, halogen or alkyl or alkoxy group containing 1-6 carbon atoms which may be substituted and n is 1 or 2, and at least one of the ortho positions of the phenyl radical relative to the -NH- group being unsubstituted. In Examples Nylon 66 is dyed in torquoise, green-blue shades.
Patent GB-1172672-A (GB)
Title: Improvements relating to the Manufacture of Percussive Drill Rods.
Inventor: SHUTE DONALD HENRY
IPC: C21D9/14
Filed: 1965-12-02
Abstract: 1,172,672. Percussive tools. PADLEY & VENABLES Ltd. 6 Jan., 1967 [2 Dec., 1965], No. 51178/65. Heading B4C. [Also in Divisions C7 and E1 Steel rods or tubes, particularly percussive drill rods, containing 0-1% to 0'9% of carbon, are heated to a temperature in the range 850‹ C. to 900‹ C., held at that temperature and then slowly cooled to produce a grain structure having not more than 48 grains per square inch. The heat treatment may be combined with, or followed by, carburization of the outer surface, possibly producing a layer between 0-01 inch and 0-1 inch deep. The whole of the outer surface may be carburized, or only the threaded ends; alternatively the whole of the outer surface may be initially carburized, after which the shank may be given a protective layer, and then the ends further carburized to a greater depth.
Patent GB-518079-A (GB)
Abstract: 518,079. Totalizators. SETRIGHT, H. R. Aug. 12, 1938, No. 23820. [Class 40 (i)] In a system in which, as described in Specification 307,818, [Class 40 (i)], an indicator element is periodically driven by a constantly rotating shaft into a position corresponding with that of a master registering member of a totalisator with the help of an electrically operated control member, the latter has alternative " starting " and " stopping " positions and is actuated by magnets, the stopping magnet opening its own circuit and the starting magnet being operated only momentarily. The invention is described with reference to the control of an indicator in which flat plates marked with parts of figures are carried by endless bands. A constantly driven wiper arm 86 makes contact in turn with springy 'contact members 69, each of which is connected to the starting magnet of a particular indicator element. The wiper shaft is geared to. a switch' 67 which periodically opens and closes the circuit to the wiper, the closure periods allowing at least one complete rotation of the wiper shaft. If, when the circuit of its starting magnet 39 is completed; the position of the indicator element corresponds with that of the corresponding, master registering member, a circuit is made at the same time via switches 99, 103, controlled by the indicator and the register respectively, for the stopping magnet 38 and the control member 31 is not moved. If the positions do not agree however the control member is moved clear of the stopping wheel 36 to allow a permanent frictional coupling of the indicator with a constantly running shaft to become effective. When correspondence is achieved, the stopping magnet 38 replaces the control member and so opens its own circuit. The control member is latched in one or other position by a resiliently mounted roller 53, and is helped to resist the wheel 36 by a fixed post 42. A disc marked with numbers and geared to the indicator co-operates with a pointer to show the number being displayed.
Patent GB-1100429-A (GB)
Title: Circular function generator
Inventor: REDMAN DEREK HARRY
IPC: G05B19/4105
Filed: 1965-12-08
Abstract: 1,100,429. Linkwork. HANCOCK & CO. (ENGINEERS) Ltd. Dec., 1966 [8 Dec., 1965], No. 52048/65. Heading F2K. [Also in Divisions B3 and G1] Apparatus for driving a tool, such as a flamecutter, in a circular path consists of a motor 12, Fig. 1, which rotates an arm 16 carrying a crank-pin 18, the pin 18 being engaged by both the longitudinal slot 19 in an arm 21 which is' slidable along a bar 23, and by the longitudinal slot 20 in a second, perpendicularly arranged, bar 22 slidable on an arm 29, the positions of the arms being signalled respectively by synchros 34, 36 which control respective servomotors driving the tool in mutually perpendicular directions. The radial position of the pin 18 is adjusted by a knob 45 to vary the size of the circle described by the tool, and the knob 45 also adjusts a potentiometer (41, Fig. 2, not shown) in a speed control circuit for the motor 12, to ensure a constant peripheral speed of the tool for any circle radius. The speed is manually adjusted by a second potentiometer (39) in the speed control circuit, which circuit further comprises an amplifier (43) and a velocity feedback circuit (32). The outputs of the two synchros 34, 36 representing the co-ordinates of the circle, are fed to similar servomotor drive circuits (Figs. 3, 4, not shown) each of which includes a synchro receiver (47, 55), an amplifier (48, 56), a servomotor (49, 57), and a rack (51, 58) connected to the tool and engaging a pinion (52, 60) connected to the receiver synchro (47, 55). Velocity feedback is provided (53, 62).
Patent GB-1412976-A (GB)
Title: Temperature indicating compositions
Inventor: GODSEY JR F W
IPC: C09K5/06
Filed: 1972-11-10
Abstract: 1412976 Thermometers BIO-MEDICAL SCIENCES Inc 10 Nov 1972 [11 Nov 1971 5 Oct 1972] 52067/72 Heading G1D A temperature indicating composition comprises (a) a solid solution capable of undergoing repeated changes of state between liquid and solid phases and (b) from 0.1 to 50 by wt per cent, based upon the weight of the solid solution, of a resolidification nucleating agent which is chemically inert with respect to the solid solution and has a melting point higher than the temperature at which the solid solution melts, the nucleating agent having a monoclinic structure and at least one a/b, a/c or c/b unit cell ratio and a space group substantially equal to that of those of the solid solution. The solid solution is one of the following binary mixtures: o-chloronitrobenzene, o-bromonitrobenzene; 1-menthol, dl-menthol; 4-chloropropiophenone, 4-bromopropiophenone; 4-chloro-2- methylaniline, 4-bromo-2-methylaniline; n-butylsulphoxide, n-butylsulphone; and α chlorocinnamaldehyde, α-bromocinnamaldehyde. Numerous examples of possible nucleating agents are given in the Specification, and the agent may be supported on a carrier such as bismuth trioxide, hygroscopic and hydrophobic fumed silica, alumina and mixtures thereof. The composition is for use in thermometers as disclosed in U.K. Specification 1360861, the nucleating agent increasing the rate of resolidification of the solid solution after premature exposure to elevated temperatures thereby resulting in the thermometer being more accurate since it will fail to register premature temperature rises.
Patent GB-1086278-A (GB)
Title: Improved mechanical unstacking apparatus for plate type filter presses
IPC: B01D25/172
Filed: 1965-12-09
Abstract: 1,086,278. Filter presses. SOC. ANON. DES FONDERIES ET ATELIERS L. CHOQUENET. Dec. 9, 1965 [Jan. 26, 1965], No. 52257/65. Heading BID. [Also in Division B8] The plates of a filter press are unstacked by means of catches carried by a pair of reciprocating endless chains 4, 5 driven through a pneumatic clutch by a rotary hydraulic motor 20, which is caused to oscillate by a reversing valve 28, located in the motor supply lines 32..35 and itself shifted between its two positions by abutments 24, 25, carried on rack 23 which is driven by the motor output shaft 19. Abutments 24, 25 may be adjustable on rack 23 to vary the amplitude of oscillation of the motor. Motor output shaft 19 drives a gear wheel 16, through an elastic coupling 18. which drives shaft 1, carrying chain sprockets 2, 3, through pneumatically operated clutch 7. Clutch 7 permits slip whereby while motor 20 oscillates through a fixed angle, chains 4, 5 move forward only until they engage the end plate of the stack and subsequently bring it back. Plates may be slowed down towards the end of their travel by a throttle valve 39, 40 in the supply line to motor 20, actuated by a cam 38 carried by rack 23. In addition, switches 41, 42, operated by rack 23, may be used to actuate clutch 7, through solenoid valve 9..14, in only one direction of traverse of motor 20, so as to cause chains 4, 5 to move in one direction for re-stacking the plates.
Patent GB-1440664-A (GB)
Title: Device for automatic exposure control in a camdra used with a  surgical microscope
IPC: G03B15/14
Filed: 1973-11-12
Abstract: 1440664 Automatic exposure control CARL ZEISS-STIFTUNG [trading as CARL ZEISS] 12 Nov 1973 [18 Nov 1972] 52369/73 Heading G2A A system adapted to be connected to a camera 3 and to a microscope has an image-forming lens 1 through which light from the microscope enters the system, and a beam-splitter 2 which directs part of the light towards the camera and part to a photo-electric detector 5, the ouput from the detector being amplified and used to drive a motor 7 which controls an iris diaphragm 11 behind lens 1. A potentiometer 8 may be adjusted according to film speed. The detector output passes through an amplifier 6 to the motor 7, powered from batteries 13, which controls the diaphragm 11. Thus the light intensity reaching the film 20 is automatically adjusted to the correct value. The electrical parts are housed in one sub-assembly 19, which fits on to another sub-assembly 18 housing the optical parts, sub-assembly being attachable directly to the camera when its objective is removed. The camera 3 may be a television camera.
Patent GB-1084413-A (GB)
Title: Improvements in or relating to internal shoe-drum brakes
IPC: F16D65/52
Filed: 1964-12-28
Abstract: 1,084,413. Internal shoe-drum brakes. BENDIX CORPORATION. Dee. 28, 1964 [Jan. 6, 1964], No. 52569/64. Heading F2E.  In an internal shoe-drum brake having a pair of brake shoes 12, 14 with one pair of adjacent shoe ends connected to an hydraulic brake actuator 30, the other pair of adjacent shoe ends being mounted on an anchoring means 32 carried by the stationary back plate 10, an adjusting lever 40 is pivotally mounted on one of the brake shoes 12 and connected to the second shoe 14 by means of a strut 62 whereby the position of the brake shoes with respect of the rotatable drum 20 is adjusted by pivotal movement of the adjusting lever which is held in the adjusted position by means of a pawl 46 co-operating with teeth 44 on the adjusting lever, resilient means 74 and 80 being provided for urging the shoes into a release position and for maintaining an operating connection between the strut 62 and the second brake shoe 14 respectively, a lost motion being provided between the adjusting lever 40 and the strut 62 in order to enable a predetermined amount of shoe movement to take place prior to the pivoting of the adjusting lever 40 by the struts 62 so that when the shoes are spread apart beyond the predetermined amount the adjusting lever:40 is pivoted relative to the shoe 12 to assume a new position to adjust the release position of the brake shoes. The strut 62 has at each end thereof an open-ended slot 64, 66, one of which (66) receives the adjusting lever 40 and the web 22 of the shoe 12 which takes support on the closed end 78 of the slot through the intermediary of the adjusting lever and the other slot 64 receives the web 28 of the second .shoe 14. A projection 68 on the strut 62 extends into an opening 70 formed in the adjusting lever 40 and is spaced from the inner edge 72 of the opening opposite to the respective closed end 78 of the adjacent slot 66 and the projection for a distance corresponding to the lost motion. The end of the strut 62 associated with the second shoe 14 is connected to a mechanically actuated parking brake lever 54 pivotally mounted at 56 on the second shoe 14 and which takes support on the closed end of the slot 64 of the strut 62 through the intermediary of the mechanically actuated parking brake lever. A resilient member 34 is operatively connected to each of the brake shoe webs to hold the ends of the webs in engagement with the surfaces 36 and 38 of the anchoring means 32.
Patent GB-1132116-A (GB)
Title: A process for the chloromethylation and crosslinking of vinyl aromatic polymers or copolymers
Inventor: CORTE HERBERT
IPC: C08J5/22
Filed: 1965-12-16
Abstract: 1,132,116. Chloromethylating and crosslinking vinyl aromatic polymers. FARBENFABRIKEN BAYER A.G. 16 Dec., 1965 [16 Dec., 1964], No. 53467/65. Heading C3P. A vinyl aromatic polymer is chloromethylated and cross-linked by reaction with methylol, a chlorosulphonic acid and sulphuryl chloride. The polymer may be polystyrene or polyvinyl toluene or a copolymer of styrene and diisopropenylbenzene, divinylbenzene or triacryloyl hexahydrotriazine. The reaction may be carried out in a solvent or swelling agent, e.g. carbon tetrachloride, ethylene chloride or 1,2-dichloropropane.
Patent GB-1379727-A (GB)
Title: Production of cores for use in the production of metal castings
IPC: C08G18/54
Filed: 1970-11-12
Abstract: 1379727 Foundry moulds FORDATH Ltd 3 Feb 1972 [12 Nov 1970] 53780/70 Addition to 1269203 Heading C3N  A method for producing foundry moulds and cores comprises mixing a foundry aggregate with a polyisocyanate and an organic solvent solution of a polyhydroxy polymer, introducing the mixture so prepared into a core box to form a " green " core or mould, and passing a tertiary amine into the core box to effect curing of the core or mould, wherein said polymer is prepared by condensing a ketone with an aldehyde under alkaline conditions. The polyhydroxy polymer is preferably prepared by condensing formaldehyde and cyclohexanone but acetone, methylethyl ketone, methyl cyclohexanone and acetaldehyde may be used. The organic solvent is preferably cyclohexanone. Additional blending ingredients are white spirit and m-cresol. The alkaline catalyst may be an alkali metal hydroxide, ammonia or an alkyl amine, e.g. triethylamine. A phenolic novolak resin may also be present. Acid may be added to the product of the condensation reaction before such product is mixed with the foundry aggregate to reduce the pH value of the reaction product to a value below 7.
Patent GB-1139238-A (GB)
Title: Water distillation plant
Inventor: RANDELL FORREST THOMPSON
IPC: B01D1/00
Filed: 1966-12-07
Abstract: 1,139,238. Distillation apparatus, control; desalination of water. G. & J. WEIR Ltd. 13 Sept., 1967 [7 Dec., 1966], No. 54704/66. Heading B1B. In distillation apparatus comprising an evaporator 1, condenser 2, distillate-conduit 13, and a pump 15 for discharging the required distillate from the apparatus, the quality of the distillate is measured by sensing- means 19 which sends a signal to stop the pump when the quality of the distillate is below the required value, the unsatisfactory distillate then flows to the evaporator through conduit 6, but when the quality of the distillate is at or above the required value, the pump is restarted and the distillate is discharged from the apparatus through non-return valve 17. The pump 15 is driven by motor 18, and controlled by an on-off switch communicating with sensing-means 19. During normal operation when the distillate is of the desired quality and pump 15 is in operation, conduit 6 acts as a gas-seal between conduit 13 and the evaporator. The apparatus is suitable for the production of distilled water from salt water which is fed to the evaporator through conduit 5, excess brine being withdrawn by jet-pump 10.
Patent GB-1254526-A (GB)
Title: Device for use when performing a function in response to changes in the values of two parameters
Inventor: COWELL BRIAN TERENCE
IPC: G05D23/275
Filed: 1967-12-01
Abstract: 1,254,526. Drying grain. JOHN WILDER Ltd. 29 Nov., 1968 [1 Dec., 1967], No. 54750/67. Heading F4G. [Also in Division G3] In a programmed control system for drying grain in a continuous or batch drier a thermometer 41 has a bulb 40 in a duct 20 for the air leaving a drying chamber. The stem of the thermometer has a number of contacts 46 embedded in it which are successively connected to a contact 45 as the mercury column moves with increase in temperature in the duct. The contacts are connected to cross-bars 18 of a plug-board 15 through terminals 14. Cross-bars 17 are connected to cross-bars 18 by screws, such as 19, 22, 24, 25 and a circuit through a relay Q is completed to programmed pairs of cross-bars by a stepping switch 21 actuated at set time intervals by a pulser 36. The energization of the relay Q terminates the drying operation. At the start of a drying cycle the temperature in the duct will be low and, for a dry grain, on application of heat, the mercury column reaches the lowest contact before the pulser steps the switch 21 to a higher contact. With increase of moisture content the slow rise in temperature of the air in the duct allows the pulser to step to a higher thermometer contact, so that the grain is heated for a longer time and to a higher temperature with increase in moisture content.
Patent GB-1070440-A (GB)
Title: Improvements relating to press-filters ensuring against accidental displacement of a plate or frame from its own seat
IPC: B01D25/172
Filed: 1965-12-30
Abstract: Accidental displacement of filter plates or frames in a filter press causing them to drop is prevented by a projection (c) underneath each plate pivot bar (b), which projection engages in a mating recess with an inclined surface which recess extends continuously along each tie rod.
Patent GB-1376793-A (GB)
Title: Frequency modulation telemeter for measuring speed
IPC: G01S17/34
Filed: 1972-11-29
Abstract: 1376793 Wave-energy echo systems COMPAGNIE GENERALE D'ELECTRICITE 29 Nov 1972 [3 Dec 1971] 55205/72 Heading H4D The speed of a target is determined by transmitting an F.M. wave of average frequency f r  towards it, obtaining the beat-frequency signals f echo -f r  (where f echo  is the instantaneous echo signal frequency) and measuring the time interval being the instants at which f echo -f r  is zero. Due to the Doppler frequency shift such interval will vary with target speed. In the embodiment the emission from a laser L is frequency modulated in linear triangular manner by a Bragg-effect device M. A frequency discriminator D produces a "pass" pulse each time f echo  = fr and a comparator C affords signal amplitude variation with variation in interval between "pass" pulses. To assess the sense of radial speed alternative oscillations G1, G2 can be switched in to afford auxiliary frequencies to replace the reference frequency from the laser. U.H.F. radio, or sound waves, are mentioned to replace light waves.
Patent GB-1362041-A (GB)
Title: Manufacture of a vinyl sulphonate or vinylsulphonic acid from carbyl sulphate
IPC: C07C309/20
Filed: 1971-11-29
Abstract: 1362041 Vinyl sulphonates and vinylsulphonic acid BADISCHE ANILIN- & SODA-FABRIK AG 29 Nov 1971 [30 Nov 1970] 55269/71 Heading C2C Vinyl sulphonates or vinylsulphonic acid are made by treating carbyl sulphate under alkaline conditions optionally followed by liberation of vinylsulphonic acid by treatment of the resulting vinyl sulphonate with acid. The vinyl sulphonate is prepared in two stages, in the first of which there is added to an aqueous basic solution or suspension, e.g. of sodium or calcium hydroxide, an amount of carbyl sulphate which is equivalent to the hydroxyl ion portion of the solution or suspension, the addition being effected at such a rate that the pH of the mixture during the addition remains in the range 9 to 12 and the temperature remains in the range 30 to 50 C., and in the second stage the mixture is heated to from 70 to 150 C.
Patent GB-1247610-A (GB)
Title: Alternating current resistance box
Inventor: KRASNOV ANDREI KUZMICH
IPC: G01R1/20
Filed: 1969-11-12
Abstract: 1,247,610. Resistance networks. KISHINEVSKY ZAVOD MIKROPROVOD. 12 Nov., 1969, No. 55399/69. Heading H3U. A decade resistance box for A.C. measuring circuits comprises lower, middle, and upper resistor decades 3, 4, 5, respectively, mounted in a screen 1 connected to a terminal 2, the terminal 2 being connected to a terminal 8 connected to the lower end of decade 3. The external circuit is connected to terminal 8 and to a selected one of terminals 9, 10, 11 in dependence upon whether decade 3 or decades 3, 4 or decades 3, 4, 5 are required for the measurement. Terminals 10, 11 are formed by plug contacts which make electrical contact with sockets 13, 12 when they are depressed, the plug contacts also serving to operate switches 6, 7 connected between the decades. As shown, only decade 3 is required for the measurement and plug contact 11 is depressed to open switch 6 whereby decades 4, 5 are disconnected. The disconnection of the unused higher decades prevents their capacitance affecting the measurement and the measuring accuracy is improved by a factor of 4.
Patent GB-1059258-A (GB)
Title: Polymerisation of unsaturated polyester resins
IPC: C08F283/01
Filed: 1965-12-31
Abstract: Unsaturated polyester resins are polymerized using as initiator 1-hydroxy-11-hydroperoxy-bis -(3,3,5-trimethyl-cyclohexyl-peroxide). The peroxide may be employed in plasticizers in solution or in the form of a paste, in an amount up to 5 parts of peroxide per 100 parts of unsaturated polyester resin.