baber/WOPTO huggingface dataset:
Patent GB-1175350-A (GB)
Title: Floating Ring Seal for a Shaft.
IPC: F16J15/44
Filed: 1967-06-15
Abstract: 1,175,350. Shaft seals. BROWN, BOVERI & CO. Ltd. 15 June, 1967 [15 July, 1966], No. 26555/69. Divided out of 1,170,008. Heading F2B. A floating ring 2 is arranged to accommodate radial movements of a shaft 1 and operate under the influence of a barrier medium (e.g. hydraulic fluid) supplied through a duct 7 so as to be urged axially towards a housing 10, an annular space 14 provided between the sealing faces 8, 19 being divided into separate pressure chambers each having a duct 20 for the supply of barrier medium. The arrangement relieves axial thrust and permits radial movement at high pressures. The ducts 7 and 20 may be fed from the same source and the pressure in duct 7 reduced to that in duct 20. Throttles 21 or a volumetric pump may be employed for the supply of medium to the space 14, the delivery rate of the medium controlling the leakage gap across the sealing faces 8, 19.
Patent GB-1277346-A (GB)
Title: Devices for controlling the movement of doors
IPC: E05F3/10
Filed: 1970-06-02
Abstract: 1277346 Door closer SOC D'ETUDES VERRIERES APPLIQUEES 2 June 1970 [4 June 1969] 26584/70 Headings E2F and E2M A door closer for a two way swing door comprises a spring 13 acting on a lever 16 engaging a cam 19 on a door shaft 8, a damping piston 20 coupled to the lever 16 and a throttle orifice 30 for the damping fluid of length sufficiently less than its width so that fluid flow through the orifice is turbulent. As shown, Fig. 4, the orifice is formed in a chamber 28 having a screw 29, the screw-end having a conical cavity. The piston has a one-way ball valve and a spring loaded safety valve. The spring 13 may be connected to a casing 4 at 14 and articulated to the lever 16 by a knife edge in a groove 33, the lever being pivoted at 17; alternatively, Fig. 6 (not shown), the spring may be mounted between a pull rod connected to the casing and a stirrup pivoted to the lever 16 on the same side of the pivot 17 as the piston. Rollers 18 and 22 act respectively on cams 19 and 21 mounted on the shaft 8; only one cam 19 may be provided. The cam 19 may be so shaped that the theoretical restoring force acting on the cam when open to 20 and 90 is, respectively, less than 80% and 50% of its initial value. The casing 4 may be filled with oil and adjustably mounted in an outer casing embedded in the floor. The pivots 8, 17 and 18 may have ball-bearings. Resisting Hinging and Pivoting: The cam 19 may have a depression 34 corresponding to the closed position and depressions 36 symmetrically placed either side thereof engageable by roller 18 for holding the door open at an angle of 105. If only one cam is used (Fig. 6), roller 22 may engage the depressions 36.
Patent GB-735321-A (GB)
Title: Process for the preparation of 3-keto-bis-nor-4-cholen-22-al
IPC: C07J9/00
Filed: 1952-10-24
Abstract: 3 - Keto - bisnor - 4 - cholen - 22 - al is prepared by selectively ozonizing the 22-double bond of 4 : 22 - ergostadien - 3 - one, without concurrently ozonizing the 4-double bond thereof, to produce 4 : 22 - ergostadien - 3-one - 22(23) - mono - ozonide, and reductively decomposing said ozonide.  The required 4 : 22-ergostadien - 3 - one is obtained by selective hydrogenation of 4 : 6 : 22-ergostatrien-3-one in the presence of a palladium catalyst. Specified solvents for the ozonization are chloroform, carbon tetrachloride, ether, methanol, ethyl acetate, acetic acid and methylene chloride, and the reaction is preferably effected in the presence of an acid-binding agent, e.g. pyridine picoline, triethylamine or N-methyl piperidine.  In an example 4 : 6 : 22-ergostatrien-3-one is hydrogenated in methanol containing potassium hydroxide, using a palladium-charcoal catalyst, and the resultant 4 : 6-ergostadiene-3-one ozonized in methylene chloride containing pyridine to yield the mono-ozonide, which is decomposed with zinc dust and acetic acid to yield 3-keto-bisnor-4-cholen-22-al. Specification 679,775 is referred to.
Patent GB-1160132-A (GB)
Title: Method and apparatus for Recovery of Heat Values and Inorganic Chemicals from Waste Liquors
IPC: D21C11/12
Filed: 1966-06-15
Abstract: 1,160,132. Granulating apparatus. FABRICAS DE PAPEL LORETO Y PENA POBRE S.A. 15 June, 1966 [24 June, 1965], No. 26809/66. Heading B5A. [Also in Divisions B8, C1, D2 and F4] A device for forming dried solids into lumps comprises a screw-feeder 35. This feeder is cooled by the circulation of water through its hollow shell 37, and has bars 43, 45 and 47 secured to the surface of the helical screw and to the inner surface of its shell. The screw is driven by a motor 58, and the whole feeder can be moved by the pinions 68 and 69 running on the rack 67. It discharges the solids as a mound in the bottom part of a furnace.
Patent GB-1136059-A (GB)
Title: Integrator or synchronizer systems
IPC: H03L7/00
Filed: 1967-06-12
Abstract: 1,136,059. Integrator systems. BENDIX CORP. 12 June, 1967 [17 June, 1966], No. 26966/67. Heading G4H. [Also in Division H4] An integrator system (Fig. 3) includes a pulse generator 19 to which a sinusoidal voltage of variable amplitude is applied, the pulse generator providing at one output 30 a pulse train E 3 , the frequency of which corresponds to the amplitude of the input signal, the pulses being accumulated in a counter 32 and at a second output 62 a ramp voltage waveform E 4  which is applied to an inhibit circuit 67 and a command circuit 70, the former inhibiting the binary counter 32 when the input signal changes polarity and the second controlling the direction of count. In the embodiment described the input signal is demodulated and the resulting D.C. signal E 2  applied to a voltage to frequency converter 28 (see Division H4), the output from which controls the counter 32 which comprises interconnected flip-flops. The command circuit 70 (Fig. 6) includes an amplifier 180 in which the ramp voltage waveform is compared with a reference bias voltage from a circuit 183, the amplifier 180 operating in its linear range when the ramp voltage and the biased voltage are equal. When the ramp voltage is more positive than the positive bias provided by the circuit 183 the output signal E 6  is at a level to indicate "count down". When the ramp voltage reaches a predetermined negative level the output signal E 6  changes to give a "count-up" signal. The inhibit circuit 67 comprises an amplifier 181 which compares the ramp voltage E 4  with a positive bias voltage provided by a battery 186 and a negative bias voltage provided by a battery 188, the output signal from the amplifier having two levels, one of which is an inhibit level to stop the count when a change in the command signal E 6  occurs. The four most significant stages of the binary counter are connected to a limiting circuit 80 (Fig. 3) which gives an output signal E 9  on conductor 96 when the counter is reaching either its maximum or its minimum values. The outputs from the counter are each connected to a transistor pair e.g. the pair 220 (Fig. 7), the output from which is connected via a resistor 224 to a fixed amplitude sine wave signal. All the outputs of the transistor gates are connected to a summing amplifier 228 which sums the inputs thereto to give an A.C. output signal on conductor 230 the amplitude of which represents the input signal. When the device is used as a synchronizer the output signal is combined with the input signal at an adder (17, Fig. 2, not shown), preceding the pulse generator.
Patent GB-376560-A (GB)
Title: Improvements in or relating to alternating current motors
IPC: H02K17/34
Filed: 1931-09-30
Abstract: 376,560. Induction machines. BÍTTCHER, P., Bahrenfeld. Altona, near Hamburg, Germany. Sept. 30, 1931, No. 27254. Convention date, Oct. 25, 1930. [Class 35.] In a double-motor unit machine wherein one member of the second unit is driven by the squirrel-cage secondary of the first motor unit, the driven element of the second unit is fed at a higher frequency than that of the supply from the rotor of a frequency changer, thus eliminating slip rings. In the form shown the stationary primaries 13, 18 of the first motor unit and frequency changer respectively are connected to the supply, and their secondaries 14, 17, drive and feed respectively the primary 15 of the second motor unit. The squirrel-cage secondary 16 of the second motor unit is mounted on the driven shaft 5. The units may be superimposed, but are always coaxial.
Patent GB-816301-A (GB)
Title: Improvements relating to the control of electric appliances
IPC: H01H47/00
Filed: 1956-09-06
Abstract: 816,301. Switching systems for heating appliances. SCHOLES & CO. Ltd., G. H., PEARCE, F. J., and PEARCE, G. S. Aug. 8, 1957 [Sept. 6, 1956], No. 27294/56. Class 38 (4). In a switching system for controlling a electrica appliance b such as an immersion heater, from two or more positions by means of switches a, c, one switch a being adjacent to the appliance, an isolator d also positioned adjacent to the appliance disconnects the system from the incoming mains leads e, f. The isolator may be incorporated with the switch a. A lamp i indicates when the appliance is switched on.
Patent GB-784403-A (GB)
Title: Improvements in or relating to control systems for circuits including electromagnets
IPC: B66C13/18
Filed: 1954-09-22
Abstract: 784,403. Control systems for electromagnets. IGRANIC ELECTRIC CO., Ltd. Sept. 22, 1954 [Oct. 23, 1953], No. 27385/54. Class 38 (4). To increase the rate of build up of current in the coil 1 of a lifting magnet M supplied from a D.C. generator 24, 24a over a contactor 2 controlled by a switch 3, the circuit of the coil includes a current transformer 23, the voltage induced the secondary winding of which, whilst the current in the coil is building up, being injected over the potentiometer R4 into the field circuit of the generator to cause the generator to operate at increased voltage during this period. A rectifier 26 renders the transformer ineffective during switching off of the magnet. Upon closure of switch 3, contactor 2 responds, completing the circuit of the magnet winding over contacts 5, 6 and simultaneously operating (by an interlock 12) a further contactor 4 which then holds itself in over a circuit including resistors R1, R2. To release the load carried by the magnet, switch 3 is opened, whereupon contactor 2 drops out, opens the energizing circuit of the magnet winding at contacts 5, 6 and completes a reverse energizing circuit therefor over contacts 7, 8 of contactor 2 and contacts 9, 10 of contactor 4. The reverse current build up eventually causes contactor 4 to drop out and disconnect the magnet from the supply at about the time it becomes demagnetized. A discharge resistor R3 is provided to safeguard the magnet in event of failure of either of the resistors R1, R2. In a modified arrangement the voltage obtained from the transformer 23 is applied directly across the generator field 24a. Alternatively, the machine 24 may have fixed excitation and be in series with a booster machine which is excited from the transformer.
Patent GB-767545-A (GB)
Title: Improvements in or relating to lid stays
IPC: E05C17/30
Filed: 1954-09-22
Abstract: 767,545. Pneumatic dash pots. ADAMS, J. M. G. Sept. 14, 1955 [Sept. 22, 1954], No. 27396/54. Class 108(3). A lid stay comprises a cylinder A and piston B provided with means whereby air can flow freely past the piston in one direction only, the cylinder A having an air escape hole J controlled by an adjustable pressure release valve M comprising a resilient pad disposed in a chamber L2 into which the hole J opens, and adjusting means L for controlling the force of a spring N bearing on the pad M. In the construction shown, the piston B comprises a cupleather. It may however comprise a piston having a non-return valve. The chamber L2 is formed by a screw-threaded cap L enaging a threaded stem in which is formed the hole J. Alternatively the stem J2 may be hollowed out to form the chamber L2 which may be internally screwthreaded to receive a plug for adjusting the spring N. As applied to the lid of a cabinet, the piston rod C and cylinder A are connected to the relatively moving parts by means of a pivot pin on the end of the piston rod, Fig. 1 (not shown), and trunnion pins on the end of the cylinder. In operation, the cap L is adjusted so that valve M prevents escape of air from the cylinder when the piston B is bearing only the weight of the lid. Only a small additional force is thus necessary to close the lid.
Patent GB-1010513-A (GB)
Title: Improvements in or relating to crystalline glass and to methods of making the same
IPC: C03C10/00
Filed: 1962-07-17
Abstract: A transparent of translucent crystalline glass is made from materials comprising by weight: 59-75% SiO2, 12-27% Al2O3, 1.7-6.0% Li2O, 1.5-5% ZrO2, and no more than 1.9% of TiO2, in which the total of SiO2, Li2O and Al2O3 is more than 85%, the balance, if any, consisting of other compatible constituents. Other ingredients used in the examples are: As2O3, Sb2O3, K2O, MgO, Na2O, and ZnO.  The materials are melted at between 1500 DEG  and 1630 DEG  C., within which range of temperatures they are held for 12 hours, and subsequently heat treated by maintaining the melt at between 800 DEG and 950 DEG  C., for 2 hours.
Patent GB-853336-A (GB)
Title: Improvements in infra red heated brazing fixtures
Inventor: HOLT ALFRED
IPC: B23K1/005
Filed: 1957-09-02
Abstract: 853,336. Electric infra-red heating. ROE & CO. Ltd., A. V. Aug. 27, 1958 [Sept. 2, 1957], No. 27519/57. Class 39(3). [Also in Group XXII] In an infra red heated brazing fixture comprising two similar halves 1, 2 between which the article 3 to be brazed is held, each half comprises a bank of tubular infra red heating lamps 4 with reflector means 5 positioned behind the lamps in each half and a thin metallic diaphragm positioned between the lamps in each half and the article. In each half lamps 4, e.g. 1000 watt lamps, are attached to a reflector plate 5 attached to, but out of contact with, a steel plate 6 and the edges of the plate 6 are bolted to the sides of a box 9, the diaphragm forming the remaining surface of the box. The diaphragms are in contact with two perforated steel plates 12 between which a honeycomb panel 3 is sandwiched. The two halves are bolted together and a seal is made between them by a sand or liquid trap 15 formed by a channel 16 and a frame 17 carried by the bottom and top halves respectively. The spaces 13 each bounded by a diaphragm 11, sides of box 9 and plate 6 are purged and pressurised with inert gas through pipes 14. The space between the diaphragms may be purged with inert gas and then filled with reducing gas through a pipe 18.
Patent GB-651946-A (GB)
Title: Improvements in and relating to apparatus for equalizing electric potentials at adjacent points on the earth's surface
IPC: A61N1/16
Filed: 1948-10-25
Abstract: 651,946. Protective arrangements. MIEREMET, J. G. Oct. 25, 1948, No. 27638. [Class 38 (iv)] Apparatus for reducing potential difference in the earth's electric field at closely spaced points comprises two horizontally spaced stacks of conductive elements, one stack consisting of a copper or like metal plates 14, 11 separated by one or more bars or wires 15 of silver or other precious metal and the other stack consisting of metal plates 19, 16 (e.g. of copper) thinly coated with another metal (e.g. nickel) and separated by one or more precious metal wires or bars 20, the upper plates of both stacks being covered by lead 13, 18 which is insulated from the plates by fibre 12, 17. Copper strips 21, 22 may be disposed on either side of the plate 19, as shown, and brass strips similarly disposed in relation to the plate 14. The several elements of the stacks may be mounted in boards 5-10 carried within a vented plywood or " grandbassam " box which is free of nails or other metal fasteners. The apparatus is arranged with the common plane of symmetry of the two stacks perpendicular to the magnetic meridian plane, the uncoated being to the east of that plane.
Patent GB-1523047-A (GB)
Title: Cation exchange membrane preparation and use thereof
IPC: C08J5/22
Filed: 1976-07-02
Abstract: 1523047 Cation exchange membranes for brine electrolysis cells ASAHI KASEI KOGYO KK 2 July 1976 [9 July 1975(2) 31 March 1976] 27654/76 Heading C7B [Also in Divisions B5 and C3] Electrolytic cells, especially for brine, have the anode and cathode compartments separated by a cation exchange membrane comprising a fluorocarbon polymer containing pendant carboxylic groups of formula -OCF2COOM, where M is hydrogen, ammonium, quaternary ammonium or metal. The said groups are obtained by reduction of -OCF 2 CF 2 SO 3 X groups (see Division C3), and the membrane may contain residual groups of this type. Preferred membranes contain -OCF 2 COOM groups on one surface, which faces the cathode, and -OCF 2 CF 2 SO 3 M groups on the opposite surface. The membrane may be formed from a single film, or may be a composite of two polymeric films, and in either case it may further include a reinforcing layer, e.g. a fabric formed from PTFE fibres. The 27 specific examples describe a variety of such membranes and their application in the electrolysis of brine, the starting copolymers being of tetrafluoroethylene and perfluoro (3, 6-dioxa- 4-methyl-7-octene sulphonyl fluoride, in some cases with a further monomer which is hexafluoropropene, perfluoropropyl vinyl ether or perfluoro- 3, 6-dioxa-5-methyl-nonene-1.
Patent GB-1027161-A (GB)
Title: Hydrostatic transmission control apparatus
Inventor: MILBURN HERBERT
IPC: F16H61/46
Filed: 1961-08-01
Abstract: 1,027,161. Hydraulic transmission of power. DOWTY MINING EQUIPMENT Ltd. Oct. 30, 1962 [Aug. 1, 1961], No. 27806/61. Heading F2C. An hydrostatic transmission comprises a variable positive displacement pump driving a fixed or variable positive displacement motor in which the displacement of the pump is adjustable by a servomotor in response to the driving torque applied to the pump and the load driven by the motor. The servomotor comprises a differential piston 32, Fig. 3, carrying a member 30 connected to the pump displacement adjusting member, and an extension 33 which houses a spring-loaded piston member 37. The piston 37 houses a spring-loaded plunger 41 which is connected by a rod 36 to a control valve 35. A made-up pump (not shown) driven from the pump drive shaft supplies fluid to the system to make up for leakage and also supplies fluid through a valve which provides a constant pressure to a connection 34 to act on the smaller side of piston 32. The supply of fluid to a connection 46 to act on the plunger 41 is controlled by a valve, Fig. 4, which comprises a valve member 59, loaded by a spring 63, and moved to the left by the pressure difference across an orifice 61 when the speed of the makeup pump, supplying inlet 57, reaches a predetermined value. When the valve 59 moves to the left it closes the connection between a groove 64 and a drain line 66 and allows fluid to flow through a port 68 to groove 64 which leads to the connection 46 of the servomotor. In operation, with the servomotor in the position shown, the displacement of the pump is zero, this being the position when the driving torque to the pump is zero. When the pump is driven, for example by an electric motor, the make-up pump is also driven and when the speed of this latter pump reaches a predetermined value, the valve 59 moves to the left as above to supply fluid pressure to move the plunger 41 against the spring loading which moves valve 35 with corresponding movement of the piston 32, thus the displacement of the pump is proportional to the speed of its drive. If the load driven by the transmission rises to cause the pressure in the high pressure line to increase above a predetermined value, this pressure fed to a connection 55 acts to move piston 37 against the spring loading 48 which causes movement of the plunger 41 and valve 35 to the left to reduce the pump displacement. This action may alternatively be provided by a tapered valve 78 which is moved by the pressure in the high pressure line, fed to a connector 74, against a spring 76 to open the groove 64 to the drain line 66, thus reducing the fluid pressure acting on the plunger 41. A needle valve 69 may provide manual adjustment of the pump displacement. Sudden rises in pressure in the high pressure line are relieved by a pilot-operated relief valve in Fig. 2 (not shown). In a further modification a solenoid valve closes a by-pass from the make-up pump when the driving motor is switched on.
Patent GB-893803-A (GB)
Title: Improvements in or relating to electric circuit devices
Inventor: HYMAN ROBERT ANTHONY
IPC: H01L39/16
Filed: 1959-08-14
Abstract: 893,803. Superconductor circuits. STANDARD TELEPHONES & CABLES Ltd. Aug. 12, 1960 [Aug. 14, 1959], No. 27846/59. Class 40 (9). [Also in Group XXXVI] A superconductor circuit device consists of a substrate of a semi-conductor material which is insulating at the low operating temperature of the device and on which is electroplated a metal conductor portion forming part of the superconductor device. As shown in Fig. 1, a binary data storage device consists of a substrate 10 of mono-crystalline silicon which is suitably massed and acts as the cathode in an electroplating bath to deposit lead or indium sensing conductors 15 and areas 16 and 17 to connect the sensing conductors to the rear of the device. A silicon monoxide insulating layer 14 is then deposited from the vapour phase and a lead film evaporated. Holes with diametric bars across them act as the storage elements. Insulating layers 21, 22, 23 between which lie the drive conductors 19, 20 which may be of niobium are then deposited. Array of storage elements.-Figs. 2 and 3 show top and bottom views of an array of storage elements formed by lead films both above and below the substrate. Below and insulated from the lead films are the sensing conductors which extend along the surface of the substrate as 35a, 36a and are connected through the substrate to corresponding sensing conductors on the lower side. The drive conductors also extend along the top as 39a and 40a and are connected to corresponding row drive conductors 35b, 36b beneath. The column drive conductors 43a to 43 fare separate for all six columns of storage elements however and are connected to terminals 44 at the edge of the device.
Patent GB-956464-A (GB)
Title: Improvements in Detection of the Presence of Metals
IPC: G01V3/10
Filed: 1960-08-11
Abstract: 956,464. Locating conductive and magnetic bodies. D. E. P. HAYWARD. (Minneapolis-Honeywell Regulator Co.). Aug. 11, 1960, No. 27887/60. Heading G1N. In an apparatus for detecting metal objects, two coils, wound on a straight bar magnetic core to each occupy substantially half its length, are connected in series across an A.C. source and coupled by electrical circuit connections or electromagnetically, to an output circuit in which a signal is developed when an object having magnetic or low electrical resistance properties is brought into proximity with one end of the sensor bar. The coils 31-34, Fig. 5, on the laminated core 30 of a sensor are connected in a bridge circuit 25, Fig. 1, so that the change in inductance of the active coils 33, 34 in the presence of a metal, is additive. The rectified bridge output is applied to operate a relay 100 through a pair of magnetic amplifiers 60, 80 connected in tandem, windings 55, 56 effecting control of the former and windings 75, 76, control of the latter. In a modification described with reference to Fig. 2 (not shown) two windings 31, 33, are connected in series across the source, and the windings 32, 34, are connected in series opposition to give a null output, and in a modification of this arrangement, the outputs on windings 32, 34 are rectified before being opposed. In a further embodiment, two coils 130, 140, Fig. 4 only are provided on the sensor, and a pair of impedances 132, 142, are connected in parallel with them across the A. C. source, the output being taken from the junction of the coils and the junction of the impedances via a rectifier 146. The sensor head is encased by a shield 200 and a stainless steel and cap 101.