baber/WOPTO huggingface dataset:
Patent GB-1041026-A (GB)
Title: Ar-poly(hydroxymethyl) diphenyl ethers and their method of preparation
Inventor: TRAPP WALTER BERNARD
IPC: C07C41/26
Filed: 1963-06-24
Abstract: Poly(hydroxymethyl) diphenyl ethers having from 2 to 4 hydroxymethyl groups per molecule of ether, are made by hydrolysing a polyhalomethyl diphenyl ether having from 2 to 4 halomethyl groups or mixtures of diphenyl ethers containing from 1 to 4 halomethyl groups per molecule of said ether, not more than two of said groups being attached to the same benzene nucleus, and wherein said halogen is bromine or chlorine, with a hydrolysing agent consisting of sodium hydroxide, sodium carbonate or sodium bicarbonate for a time sufficient to substantially replace said halogen groups with hydroxyl groups, and separating the poly-(hydroxymethyl) diphenyl ether product from the reaction mixture.  The reaction may be effected in solution in acetone, methylethyl ketone, dioxane or t-butyl alcohol, at a temperature between 60 DEG  and 65 DEG  C., or in oil-in-water emulsion at a temperature of 80 DEG  to 100 DEG  C.
Patent GB-916174-A (GB)
Title: Assembly process for semiconductor device
IPC: H01L21/60
Filed: 1959-07-21
Abstract: 916,174. Semi-conductor devices. TEXAS INSTRUMENTS Inc. July 21, 1959 [July 25, 1958], No. 24981/59. Class 37. In a process for making a semi-conductor device a lead wire is bent into a closed straightsided loop with its ends in alignment and under compression, and a semi-conductor body inserted between its ends to form a self-supporting sub-assembly. In the embodiment a split loop 22 (Fig. 2) of tinned copper or silver wire is sprung open and a moulded nylon cup 18 threaded over one of its ends. A diffused junction silicon wafer 14 with nickel-plated faces is slipped between the ends of the loop which is then released to clamp the wafer in position. A number of such loops are then hung on a rack and after dipping in flux are dipped in molten solder to join the wafers to the ends of the loop. The joints are cleaned by successive etchings in a phosphate solution and nitric acid after which the nylon cups are slipped over the joints and filled with epoxy resin which is afterwards heathardened.
Patent GB-600181-A (GB)
Title: Improvements in and relating to battery charging equipments
IPC: H02J7/04
Filed: 1945-09-27
Abstract: 600,181. Charging batteries. CRYPTON EQUIPMENT, Ltd., SQUIRE, R., and WHELLER, A. G. Sept. 27, 1945, No. 25124. [Class 38 (iv)] In a battery charging equipment wherein upon the battery being charged to a predetermined voltage a thermal or other voltage relay sets in motion a timing device which after a predetermined time automatically switches off the charging current, the voltage relay, by closing its contacts, also moves a change-over switch to reduce the charging current by tap changing, either on a choke coil or like currentreducing - device in the primary circuit of a transformer used for charging the battery through a rectifier, or on the primary winding itself. When the battery b, charged by transformer c<SP>1</SP> and rectifier a, reaches a voltage determined by the adjustable resistance h, the thermal type voltage relay g energises the coil q of the tilting mercury type change-over switch p and the winding s of the motor operating the timing device. The change-over switch p reduces the charging current by changing the connection to the tapped choke coil e (or a tapped resistance) in the primary circuit of the transformer c<SP>1</SP> or by changing primary tappings on the transformer ; also this switch, by its contacts r, closes a maintaining circuit for windings q and s. Charging continues at reduced rate until the timing device opens the micro-switch m either to interrupt the supply directly or open the main contactor f. Charging is re-started by again setting the timing device for the desired time, which re-closes switch m.
Patent GB-954630-A (GB)
Title: Improvements relating to steam generating equipment
Inventor: THOMAS TERENCE FELIX
IPC: F22D11/00
Filed: 1959-07-22
Abstract: 954,630. Feedwater supply and heating systems for steam boilers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 15, 1960 [July 22, 1959], No. 25189/59. Heading F4A. In means for disposing of the heat in, and recovering the condensate from, surplus steam, e.g. during starting up and energency shutdown periods of nuclear power plant, the surplus steam is passed through an automatic supply valve AV, which can be overridden by a manually-operable valve MV, to an ejector condenser EC which entrains cooling water supplied from a storage tank through a pipe WL having a non-return valve NRV. The mixture of cooling water and condensate flows along a pipe CL and into the tank. As the stored water gradually heats up it is circulated through pipes with thermostatically controlled valves to the steam condensers of turbo-generators where it is cooled by flashing off steam at low temperature and high vacuum. The water, which is deaerated in the process, is fed partly to the boiler, the remainder being pumped back to the tank through a pipe with a valve controlled by the water level in the condenser or, through water coolers.
Patent GB-1299054-A (GB)
Title: An x-ray pulse tube
Inventor: ALEXANDROVICH EDUARD-GELY VITA
IPC: H01J35/22
Filed: 1971-04-19
Abstract: 1299054 X-ray tubes E V ALEXANDROVICH N V BELKIN A A RAZIN M A KANUNOV VA TSUKERMAN G N SLOEVA L V TSVETKOV and N A DRON 19 April 1971 [23 March 1970] 25223/71 Heading H1D The envelope of a pulsed X-ray tube comprises a hollow metal member 1 carrying one of the electrodes, and a conical insulating member 2 disposed inside the metal member and supporting another electrode. In the example illustrated a conical glass portion 2 is sealed at one end to the member 1 and at the other to a metal tube 7 which supports the cold cathode 6 and acts as a lead-in conductor, the members 1 and 7 forming a coaxial line. A flange 9 protects the glass from charged particles and sputtered metal, and a metal exhaust tube 8 extends into the end of the lead 7. The end of the cylindrical member 1 is closed by a metal cover 4 which may be hemispherical and which is coated with a target material 5 such as a tungsten foil, or alternatively rhenium or gold.
Patent GB-963311-A (GB)
Title: Bathroom scale
Inventor: MATTSON HARRY LEROY
IPC: G01G19/46
Filed: 1962-07-02
Abstract: 963,311. Weighing apparatus. BREARLY CO. July 2, 1962, No. 25304/62. Heading G1W. A weighing scale comprises a base 12, a platform 13 movably above the base on weighing levers 14, 15, a coiled tension spring 19 serving as the weighing spring suspended on the base and connected with the levers 14, 15 to resist downward deflection of the levers as weight is applied to the platform, weight indicating means e.g. a dial 32, means for operating the indicating means including a vertical follower pin 52 fulcrumed at its lower end to the lever 14 to which the lower end of the spring 19 is connected, the pin extending centrally through the spring to move endwise with the spring as it is extended, and a cylindrical guide member 62 carried on the pin intermediate the ends of the spring 19 and maintained in concentric relation thereto by a loose telescoping fit therein so as to keep the pin 52 in its position centrally of the spring. The levers 14, 15 are of sheet metal and are pivoted on supports 16, 16<1> respectively on the base 12. The platform 13 has downwardly projecting legs 18, 18<1> which rest on hangers 17, 17<1> on the levers 14, 15. The weight carried by the lever 15 is transmitted to the lever 14 via a lug 22 and a hanger 21. The end 20 of the lever 14 remote from its support 16 has a slot 54 to receive the lower end of the spring 19. The upper end of the spring 19 is supported by a cupped washer 27 on a tubular screw 25 suspended on a hand nut 29 accessible for manual adjustment through an opening 30 in the platform 13. The end 20 of the lever 14 has a conical depression 66 to receive the lower end of the pin 52, the upper end of which contacts a conical depression 59 in one arm 60 of a bell crank lever 38 pivoted at 40. The bell crank lever 38 is pivotably connected to a rack 35 which meshes with a pinion 34 on a vertical shaft 33 carrying the dial 32. The rack is held in engagement with the pinion 34, and the pin 52 is held between the depressions 59, 66 by the effect of a coil spring 36. The scale is calibrated during manufacture by adjustment of the position of the washer 27 relative to the spring 19, and the zero of the dial may be set by rotation of the hand nut 29. The pin 52 is held in position by the effect of the guide member 62, and by the fact that the pin 52 is a loose sliding fit in the tubular screw 25.
Patent GB-1388470-A (GB)
Title: Brake operating cylinders
IPC: B60T17/08
Filed: 1972-05-30
Abstract: 1388470 Brake actuators WABCO WESTINGHOUSE GmbH 30 May 1972 [29 May 1971] 25336/72 Heading F2F A brake operating cylinder 1 has a piston 2 in the cylinder defining a pressure chamber for a pressure medium, brake actuating means 13 coupled to the piston and a spring 4 effective on the piston to tend to apply the brakes by means of the brake actuating means if the pressure in the pressure chamber should fall below a particular level, the pressure chamber being divided by a movable wall 7 into two sub-chambers 8, 9 each connectible to a separate source of pressurized medium. As shown, pressure medium is received in the chamber 9 via bores 11 and 12 in the rod 13. If the supply of pressure medium fails in either chamber the piston 2 is maintained against the pressure of the spring 4, and a relaxation of the pressure in the chamber 8 due to operation of a hand-brake causes the spring to move the piston and rod in a direction to apply the brake. The device may be fitted concentrically to a cylinder-piston or diaphragm main brake actuator, Fig. 2 (not shown) or Fig. 3.
Patent GB-389131-A (GB)
Title: Improvements in golf practising appliances
IPC: A63B69/36
Filed: 1931-09-10
Abstract: 389,131. Golf-practising appliances. WIGHTMAN, M. B., 937, View Street, Victoria, British Columbia, Canada. Sept. 10, 1931, No. 25395. Convention date, Sept. 18, 1930. [Class 132 (ii).] Comprises a target 7 made of pliable material and spaced therefrom at a convenient distance a tee switch 20 upon which a ball may be placed, which when the ball is struck trips to make an electric circuit and start a timing device which is stopped when the circuit is broken by the ball striking the target. The lower edge 12 of the target is anchored by springs 14 which prevents wind action opening the target switch. When the target bulges on being struck, the springs 14 give and the switch 15 opens. When the ball leaves the tee the spring 25 forces contacts 23, 24 together to make a circuit and energize a solenoid which releases a timing device in the form of a weight attached to a drum which is arrested when the target is struck. A pointer on the drum spindle moves over a scale. In front of the target is a screen 18 with an aperture 17 smaller than the target through which aperture the ball has to pass.
Patent GB-696434-A (GB)
Title: Improvements in or relating to inspection means for viewing the interiors of combustion chambers
Inventor: ZOLLER RONALD ERNEST
IPC: F23M11/04
Filed: 1950-10-18
Abstract: 696,434. Combustion chamber observation devices. BABCOCK & WILCOX, Ltd. Oct. 17,1951 (Oct. 18, 1950], No. 25419/50. Class 51(i) Inspection means for viewing the interior of a combustion chamber during operation thereof comprises a pin-hole aperture for the passage of radiation from the interior of the chamber and viewing means including a screen adapted to receive radiation transmitted through the aperture. As shown, Fig. 1, applied to a pressure-operated tube lined combustion chamber 1 of a doubled cased boiler in which a pressure is maintained between the outer casing 9 and the chamber 1 which is greater than that within the chamber, the inspection means comprises a ground glass-screen 15 arranged behind a pin-hole 16. The means, Fig. 2, are located in a box 17 an aperture 22 in the end plate 21 coinciding with an aperture 23 in the chamber wall. A disc 24 having an aperture 25 registering with hole 22 is secured to the plate 21 and an annular rotatable plate 28 carried on the front face of a spur wheel 26 is provided with a series of differently sized pin-holes 16 each of which is capable of being brought into register with the aperture 25 by rotation of wheel 26, and exerts a slight sealing pressure against the disc 24. Rotation of 26 is effected by pinion 43, shaft 33 and handwheel 34. The glass-screen 15 is mounted in a U-shaped holder the sides of which are provided with blocks 36 for sliding in slots 37 in the side walls of the box 17 whilst the bottom is formed with a tapped boss 32 engaging with a threaded part of the shaft 33 so that longitudinal movement of the screen may be effected by rotation of the handwheel 34. The screen 15 is viewed through a glass sheet 44. The screen 15 or sheet 44 may be of green tinted glass. The screen may be a reflecting surface arranged outside the boiler or apparatus at an angle of 45 degrees so as to be visible from the front of the apparatus.
Patent GB-140021-A (GB)
Title: Improvements relating to detachable wheels for motor and like vehicles
IPC: B60B3/18
Filed: 1919-10-17
Abstract: 140,021. Owen, A., Beveridge, D., Coupe, H., and Johnston, J. Oct. 17, 1919. Detaching from, and attaching to, permanent hubs.-The detachable wheel c fits over a squared shoulder b on the axle-sleeve a, and carries a plate h having a square aperture adapted to clear, or be blocked by a rotary member e. The latter is mounted on the cylindrical portion of the sleeve a, and has a square external periphery corresponding to the aperture in the plate h. An operating handle fitted to the member c works in a slot in the plate h, and may be locked by a spring-pressed pin j. A sleeve f recessed into the wheel has a square aperture fitting over the member e, a screwed-on flange k securing the latter when the wheel is removed.
Patent GB-966156-A (GB)
Title: Dynamo-electric machines
Inventor: SMITH ARTHUR NIEL
IPC: H02K5/128
Filed: 1962-07-03
Abstract: 966,156. Dynamo - electric machines. ENGLISH ELECTRIC CO. Ltd. July 2, 1963 [July 3, 1962], No. 25514/62. Heading H2A. In a dynamo-electric machine, e.g. the motor of a domestic heating system circulating pump unit, which includes an unwound, e.g. squirrelcage rotor member 26 arranged for operation submerged in near-boiling water and a stator member 19 whose wire 20 and electrical winding 21 are enveloped in an electrically-insulating resin mass 23, a tubular shielding member 24 for protecting the mass against exposure to the water is disposed in the air gap between the rotor and stator members and is formed of a plastics material which is resistant to degradation by prolonged exposure to the water. The mass 23 may be on either epoxy or polyester resin, and the shielding member 24 may be of polypropylene, high density polyethylene, or P.T.F.E.; the two extend across one end of the stator member and support one rotor bearing 25 the other 16, being carried in a pump end wall 15.
Patent GB-776228-A (GB)
Title: Improvements in or relating to frequency doubling circuit arrangement
IPC: H01J17/44
Filed: 1955-09-06
Abstract: 776,228. Frequency doubling circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 6, 1955 [Sept. 9, 1954], No- 25522/55. Class 40(6) A frequency doubler comprises two valves having a common cathode resistor and having the anode of the first valveconnected to a tapping on the anode load of the second, the input signal being applied to the grid of the first valve and the grid of the second being earthed. It. is explained that as the instantaneous voltage Ui on the first grid increases from cut off value V1 (Fig. 2) the anode current of the first value increases and that of the second decreases so that the anode voltage Va of the second valve increases until at the point Vo the current in the second valve cuts off whereupon the increasing current in the first valve causes the voltage to decrease again. Accordingly if the first valve is biased to the point Vo, frequency doubling of the input signal takes place. It is stated that by suitable choice of valves the characteristic of the circuit may be made symmetrical and a substantial sinusoidal voltage output may be obtained.
Patent GB-500304-A (GB)
Title: Improvements in or relating to foldable photographic cameras
IPC: G03B13/20
Filed: 1937-09-21
Abstract: 500,304. Photographic cameras with range-finders. KODAK, Ltd. Sept. 21, 1937, No. 25567. Convention date, Sept. 21, 1936. [Class 98 (i)] The movable mirror 25 of the range-finder is operated through an arm 23, by a bar 18 slidable on pins 20 and actuated by a rotatable cam 13. A flexible member 16 attached to and wrapped around the axle 14 on which the cam is mounted is attached to a slide member 8 mounted on pins 10. A hook portion 11 of this member engages in a hole in the part 12 of the slidable focusing bed 4 to communicate tho focusing movement to the mirror 25. Specification 489,900 is referred to.
Patent GB-1147446-A (GB)
Title: Improvements in or relating to educational devices
Inventor: MILLER ERIC GEORGE
IPC: G09B17/02
Filed: 1965-06-17
Abstract: 1,147,446. Copy-holders. E. G. MILLER. 17 June, 1966 [17 June, 1965], No. 25595/65. Heading B6W. An educational device for masking different parts of a word or sentence when placed on a text-bearing sheet comprises a support 1 on which are slidable two carriages 2a, 2b each carrying a chamfered masking device 5, the carriages being urged together by a rubber band 10 and separated to adjust the distance between the devices 5 by finger pressure on finger rests 4. Each carriage can be fixed in a desired position by a screw 8. Seven alternative forms of construction are described, five of them respectively with reference to Figs. 1-3, Figs. 4-6, Fig. 7, Fig. 8, Fig. 9 of the drawings. In the construction of Figs. 4-6, the masking device can be retracted to inoperative position within the support, and in those of Figs. 8 and 9 can be raised out of contact with the mask.
Patent GB-1513884-A (GB)
Title: Liquid fuel and air mixing and modulating device
IPC: F02M9/10
Filed: 1975-06-16
Abstract: 1513884 Adjustable chokes for IC engines DRESSER INVESTMENTS NV 16 June 1975 [18 July 1974] 25613/75 Heading F1B A Venturi flow passage supplying fuel/air mixture to an I.C. engine comprises pivoted members 20, 22 which are rotated simultaneously to maintain the area ratio between the exit and throat within a predetermined range. The exit area Aep varies with rotation about shaft 34 of member 20 and the throat area At varies with rotation about shaft 36 of member 22, the area ratio being given by:- where L, H o , α and # are defined in Fig. 2. In one embodiment, Fig. 3, the simultaneous rotation is effected by throttle valve linkage via a cam 50 keyed to shaft 36 which engages a spring- biased follower 42 keyed to shaft 34. In another embodiment, Fig. 6, the rotation is effected by a pantograph mechanism 62 connected to the throttle valve linkage via a shaft 56.
Patent GB-1068523-A (GB)
Title: Dibenzothiepin derivatives
IPC: C07D337/12
Filed: 1963-12-13
Abstract: The invention comprises compounds having the general formula <FORM:1068523/C2/1> wherein R represents a C1- 5 alkyl radical and each of X and X1 is a hydrogen or halogen atom or a C1- 5 alkyl, perfluoroalkyl, alkoxy, alkyl-mercapto, alkylsulphonyl, sulphamoyl, alkyl-sulphamoyl, dialkylsulphamoyl or acyl radical. The compounds are prepared by condensing a compound of the formula <FORM:1068523/C2/2> with a compound of the formula HalMgCH2CH2CH2N(R)2 where Hal is halogen, and hydrolysing the resulting adduct.  The ketone starting materials may be prepared by dehydration of the appropriately substituted 2-benzylthio-benzoic acids with a polyphosphoric acid, or by treating the 2-benzylthio-benzoic acid with an inorganic acid halide to form the corresponding carboxylic acid halide and then effecting ring closure by a Friedel-Crafts reaction.  Reference has been directed by the Comptroller to Specifications 1,001,823 and 1,001,824.
Patent GB-786199-A (GB)
Title: Improvements in or relating to information storage devices and materials handling apparatus including same
Inventor: DENNY RONALD JOHN STEPHEN
IPC: B65G47/48
Filed: 1954-09-06
Abstract: 786,199. Conveyers. GENERAL ELECTRIC CO., Ltd. Sept. 6, 1955 [Sept. 6, 1954], No. 25793/54. Class 78 (1). Apparatus for predetermining one of a number of operations to be performed on each of successive batches of material fed on a conveyer comprises storage means for containing a plurality of differing tokens each having a characteristic corresponding to a particular operation, means for selecting from the storage means in respect of each batch of material a token corresponding to the particular operation required to be performed, means for causing the selected tokens to be delivered in the selected order to an identifying device, and means responsive to the identifying device for causing the selected operations to be performed on the successive batches as they leave the conveyer. As shown, waggons each carrying one of three different grades of coal are emptied in turn by a tippler 2 on to a conveyer belt 1 provided with feelers 22, 23 for detecting the presence of a tipped batch of coal. The feelers 22, 23 operate in conjunction with a gap timer 21 to prevent a second actuation of the tippler until the first tipped batch of coal has passed the second feeler. This results in spaced batches of coal being delivered to a conveyer belt 3. As each batch is tipped on to belt 1, an operator depresses a switch 12, 13 or 14 according to the grade of coal so as to cause the release of a ball 8 of appropriate size from one of three hoppers 9, 10, 11 into a tube 18. The balls in tube 18 form themselves into a line against an outlet gate 19, the number of balls in the line corresponding to the number of batches of coal on the belt 3 so that the first ball in the line corresponds to the batch approaching the delivery end of belt 3. This batch now passes under feelers 24, 25 which, when both are raised, are adapted to operate the outlet gate 19 to release the corresponding ball, which passes to a shoot 26 the floor of which has a slot of gradually increasing width to gauge the ball, which passes to a corresponding chamber 27, 28 or 29, and in so doing, closes an appropriate switch 30, 31 or 32 in the controlling circuit of a system of delivery flaps, whereby the batch, after leaving belt 3, is delivered down the appropriate one of three shoots 4, 5. or 6. The balls, after actuating the switches 30-32, are returned to their respective hoppers 9-11 by an elevator 34 delivering to a shoot 35 having a gauging slot similar to that of shoot 26. Instead of gauging the size of the balls, their weight may be determined. Cylindrical rollers of differing lengths may be used in place of the balls.
Patent GB-770960-A (GB)
Title: Improvements in or relating to automatic cut-off devices particularly for electric smoothing irons
IPC: H01H37/22
Filed: 1954-09-07
Abstract: 770,960. Thermal switches. HECLA ELECTRICS PROPRIETARY, Ltd. Sept. 7, 1954 [April 29, 1954], No. 25949/54. Class 38(5) A control device especially for electric irons comprises a bimetal or other thermal element arranged to act on the contacts through an adjustable wedge-shaped intermediate member. As shown, the bimetal  14 is secured to a base plate 7 in contact with the sole plate 2 and heating element 4. Non-resilient and resilient members 11, 12, respectively carry contacts 8, 9, the member 12 also carrying a factory-adjustable screw 27 bearing on the intermediate member 18. The latter has side flanges loosely held in claws 19 provided on the bimetal 14 and is connected by a link 23 to an adjusting spindle 22 carrying a setting pointer 26. Specification 762,712 [Group VIII] is referred to.