baber/WOPTO huggingface dataset:
Patent GB-1321339-A (GB)
Title: Television systems
IPC: H04N7/087
Filed: 1971-04-19
Abstract: 1321339 Multiplex pulse signalling INTERNATIONAL STANDARD ELECTRIC CORP 19 April 1971 [14 March 1970] 23870/71 Addition to 1306467 Heading H4L In the television transmission system disclosed in the parent Specification, in which a time-compressed audio signal is transmitted during a predetermined number of line periods between the end of each frame and the start of the next frame, the bandwidth of the audio signal is restricted at the receiver and the storage element capacity of the storage device at the receiver is correspondingly reduced to provide a simplified receiver at the expense of audio bandwidth. This is achieved by passing the received signal through a low pass filter and reducing the write-in frequency to the storage device, thus ensuring a corresponding reduction of the number of storage elements, and correspondingly reducing the read-out frequency whilst ensuring that the ratio of these frequencies is the inverse of the compression ratio at the transmitter.
Patent GB-953270-A (GB)
Title: A separated oil return system for a compressor
IPC: F04C29/02
Filed: 1962-06-21
Abstract: 953,270. Separating liquids from gases. GARDNER-DENVER CO. June 21, 1962 [March 14, 1962], No. 23914/62. Heading BIT. [Also in Division F1] A gravity oil collecting chamber 30 in the discharge duct 32 of a rotary compressor has a vertical cylindrical oil agglomerating screen 78 suspended from the cover plate 46 of a housing 44 and the air-oil so formed is forced by the prevailing air pressure through said screen and through an inner perforated backing screen 80 down which the foam flows and through apertures 72 near the base of a closedended axial tube 62 having a branch duct 86 which is connected by a duct 88 to a closed pressure chamber 22c, Fig. 5 (not shown), of the compressor. Loss at the compressed air component of the foam is thus avoided. Oil is withdrawn from the base of chamber 30 through a duct 32 and is returned by a pump to the compressor. Oil-free compressed air traverses an aperture hollow stem 58 leading to an outlet 38.
Patent GB-585001-A (GB)
Title: Improvements in and relating to variable-pitch propellers
IPC: B64C11/38
Filed: 1944-11-30
Abstract: 585,001. Fluid-pressure servomotorcontrol systems. ESCHER WYSS MASCHINENFABRIKEN AKT.-GES. Nov. 30, 1944, No. 23938. Convention date, Nov. 26, 1943. [Class 135] In a hydraulically-actuated variable-pitch propeller, the pressure liquid applied to the mechanism to effect a change of pitch is also applied to a restoring device for the controlling mechanism. In an embodiment, a pump 5 with a relief valve 6 supplies pressure liquid through a control valve 32 to a servo-piston 31 connected to the variable-pitch blades 7 of the propeller. Valve 32 is actuated by a centrifugal governor 1 and is provided with an air dashpot 30, the latter comprising a spring-suspended piston 11 working in a cylinder of which the two ends are connected by throttled passage 15. Tappings of the pressure liquid, after having passed the control valve, are led through pipes 12, 13 to opposite ends of the valve piston to provide a follow-up or restoring movement. Throttles 35, 36 permit adjustment of the speed of the follow-up action. In modifications, the follow-up is obtained by applying the tappedoff pressure fluids to the two ends of piston 11. Where the motive fluid is at very high pressures, pipes 12, 13 are interconnected by a throttled passage to allow of proportional but reduced pressures being applied to piston 11.
Patent GB-930905-A (GB)
Title: Electric cable with pressure compensating means
IPC: H01B9/06
Filed: 1959-07-13
Abstract: 930,905. Gas-pressure cables. T. F. PETERSON. July 13, 1959, No. 23948/59. Class 36. Pressure variations in a fluid insulated cable 13 are compensated by providing within the sheath 19 a tube 11 containing gas and having openings which communicate with the insulating fluid. Within the tube 11 are freely slidable seals 20 which may be slugs fitted with piston-rings or balls of impermeable material greased to provide a gas-tight fit. These seals are each located between an opening 22 and means whereby gas-pressure within the tube may be built up, such means being, e.g. a plug 30 secured by crimping the tube, or another slidable slug or ball, the movement of which is limited by some form of stop. The same or similar means are used to prevent the movable seals from being blown out through the openings 22 when cable fluid pressure drops. The pocket of gas trapped between the movable seal 20 and the plug 30 or other stop absorbs variations in fluid-pressure of the insulation. The tube 11 may be in one length or a series of shorter tubes arranged end-to-end may be used; it may be laid up either axially or helically, or may be contained within a conductor; a plurality of such tubes may be provided.
Patent GB-1306152-A (GB)
IPC: A01D87/00
Filed: 1970-05-18
Abstract: 1306152 Implement for chopping and collecting crops MASCHINENFABRIK FAHR AG 18 May 1970 [6 June 1969] 23965/70 Heading A4C [Also in division B8] A field implement for picking up and chopping crops comprises a frame 1 which carries crop pick up and chopping means 23 and is provided with means for carrying a separatable container 3 for the chopped crop. The frame 1 is U-shaped in plan, fig 2 (not shown), the container 3 fitting between the limbs 2 of the V. Each side of the container 3 is supported by two intersecting levers 8 and 9 whose top ends are connected to the container by means of a roller 18 and pin 11 respectively. The lower ends of the levers 8 and 9 are connected to a beam 5 by a pivot 10 and a lockable sliding pivot 15 respectively. The beam 5 is connected to the frame member 2 by a pivot 6 and a catch 7. Hydraulic cylinders 19 either tip the container 3 when pivot 15 is locked and catch 7 released or raise and lower it when pivot 15 is released and catch 7 engaged. The implement may either be tractor drawn, fig 1 (not shown), or self-propelled by an engine 26 and steered by the front wheels 24. At least one wheel 20 is disposed under one of the limbs 2 of the frame 1.
Patent GB-501752-A (GB)
Title: Improvements in and relating to compositions for treating the scalp
IPC: A61K8/23
Filed: 1937-09-03
Abstract: 501,752. Preparations for treating the scalp. OVERILL, S. Sept. 3, 1937, No. 24103. [Class 81 (i)] A preparation for promoting the growth of hair comprises an animal fat (or fats), an extract of bran, vegetable oil, finely divided sulphur and a volatile solvent. The animal fat may be mixed with the bran and cooked with a small proportion of water. The fatty fraction so obtained being separated and mixed with vegetable oil, sulphur and the solvent. A proportion of hard wax, e.g. paraffin wax, and essential oil may be added. In an example, the fat comprises a mixture of beef and pig fat, the oil is castor oil and the solvent absolute alcohol.
Patent GB-664681-A (GB)
Title: Improvements relating to electric motor control systems
IPC: H02P7/282
Filed: 1948-09-14
Abstract: 664,681. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., FORSTER, E. W., and FARMER, W. J. R. Sept. 14, 1948. No. 24115/48. Addition to 613,917. Class 38 (iii). [Also in Group XXXV] The system described in parent Specification is modified by having a common capacitor 55 connected in the return conductor to the cathodes in the control circuits of the main rectifying valves 3, 4, so that the alternating potentials applied to the valves is similarly influenced by a component of direct voltage appearing across the capacitor. The armature of motor 1 is supplied from transformer 5 through valves 3, 4, which may be thyratrons. A potential of fixed phase relation to that of the anode voltages of the valves is supplied to such control electrode through transformer 16 and resistor-reactance network 52 which is connected to tappings in the secondary winding of the transformer and to the grids of the valves. The capacitor 55 is connected between the centre-tap of the transformer secondary winding and the cathodes of the main valves, a direct voltage control component being developed across the capacitor by control valves 23, 24, which are respectively connected in parallel with parts of the control circuits of the valves 3, 4, those parts each including the capacitor. The valves 23, 24 are connected in series so that, when the impedance of each of the parallel circuits in which they are connected is equal, no resultant direct potential appears on the capacitor 55. If the impedances become unequal, a direct potential appears across the capacitor by rectification of the secondary voltage of the transformer 16, which potential varies the conductivity of the main valves. Any alteration of the direct potential equally affects both main valves, so providing stable operation. The control valve 23 has its impedance varied in response to a control potential developed between its cathode and grid whereby to determine the value of direct potential across capacitor 55 and thus to control the conductivity of the main valves. The control potential has a motor-speed setting component derived from potentiometer 25, a potential component dependent on the motor armature current applied across potentiometer 37, and a component dependent upon the motor armature terminal voltage from potentiometer 34. The second and third components are simultaneously adjusted in value with the first so that the motor speed remains substantially constant at any setting from no-load to fullload. The control voltage derived from the potentiometer 37 is modified by one obtained from a potentiometer 57 so as to be proportionately higher for a given armature current at high speeds. A two-phase supply source may be used.
Patent GB-1511957-A (GB)
Title: Container base for the pneumatic discharge of fine material
IPC: B01F33/40
Filed: 1976-06-10
Abstract: 1511957 Discharging hoppers POLYSIUS AG 10 June 1976 [23 July 1975] 24136/76 Heading B8S In order to provide for the pneumatic discharge of material from a silo 2 a container base 1 is provided in the silo, the base 1 being provided with pneumatic feed channels 6 extending radially from the periphery of the base 1 to a central material outlet located below a conical discharge cap 5, the region above each channel 6 being empty and bounded by two oblique surfaces 7a, 7b, and at the junction of each pair of oblique surfaces with the associated channel 6 there is located a downwardly and outwardly shaping cover 9 which has two material discharge apertures 11, 11a and which is adapted for aeration.
Patent GB-878866-A (GB)
Title: Improvements in or relating to apparatus for measuring fluid flow
Inventor: MACLENNAN GEORGE
IPC: G01F1/48
Filed: 1959-07-14
Abstract: 878,866. Measuring fluid-flow. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 4, 1960 [July 14, 1959], No. 24149/59. Class 69 (1). [Also in Group XL (a). An apparatus for measuring fluid flow comprises a coiled pipe 2 with means for measuring the pressure difference set up across the pipe when fluid flows in it. The coiled pipe is steamjacketed at 5 and has connections 8 and 9 at each end connecting with either side of a diaphragm 11 in a casing 10. A soft iron core 12 moves with the diaphragm to excite a coil 13 and send signals to an amplifier 14 and a suitably calibrated flow recorder 15. In the example described the apparatus measures the rate of evolution of gas flowing from a uranium dissolver through pipes 1 to a scrubber (apparatus not shown). A dimensional example is given.
Patent GB-1062426-A (GB)
Title: Improvements in valve control arrangements in particular for gas turbine power plants
IPC: B03D1/24
Filed: 1964-06-11
Abstract: 1,062,426. Turbines; engine stop gear. SOCIETE D'ETUDES ET DE PARTICIPATIONS, EAU, GAZ, ELECTRICITE ENERGIE S.A. June 11, 1964 [July 3, 1963], No.24224/64. Headings F1K and F1T. [Also in Division G3] A valve for dividing the flow from a free piston gas generator between an outlet 2 to a turbine and an exhaust outlet 3, is positioned normally in response to a control pressure at 10 which varies with the regulation of the turbine. An overriding control is operative to close the outlet 2 in response to some exceptional perturbation affecting the turbine. Valve 4 is carried by a piston rod 16 of which the differential piston 15 is mounted in a movable cylinder 17 fast with a second piston 11 in a fixed cylinder 12. Pneumatic pressure is applied to one end of cylinder 17 at 19 and equalizes on both sides of the piston through a restriction 15a. The piston is thus held normally against an abutment 22 on cylinder 17. An electromagnetically controlled valve 21 opens a vent below piston 15 in response to the perturbation. The normal control pressure 10, through the spring-loaded piston and link shown connected to the piston rod 16 and to a control valve 9, positions this control valve to control the supply and exhaust of pressure fluid to and from opposite ends of cylinder 12. Thus under normal conditions cylinder 17 is positioned by the control pressure at 10 and carries with it piston and rod 15, 16 and valve 4. On opening of valve 21, the lower end of cylinder 17 is vented and piston 15 is moved by the pressure at 19 so that valve 4 closes outlet 2. The vent opening of valve 21 is placed so that, in co-operation with a passage 23 in piston 15, closing of valve 4 is cushioned.
Patent GB-399008-A (GB)
Title: Liquid dispensing apparatus
IPC: B67D1/14
Filed: 1932-08-31
Abstract: 399,008. Dispensing liquids ; doors for resisting fluid pressure. SAWTELL, A. B., Maryvale Street, Toowong, near Brisbane, Australia. Aug. 31, 1932, No. 24273. Convention date, Aug. 31, 1931. [Classes 116 and 123 (i).] In an apparatus for dispensing sweetened and/or flavoured carbonated beverages, the beverage is supplied from a container A, Fig. 1, to a dispensing chamber N fitted with a float-controlled valve O<3> to which the supply is governed by a manually-operated valve H, which normally connects the container with the valve O<3>, but shuts off this connection during snifting of and discharge from the chamber. The vessel A communicates with the carbonating-gas supply through a pipe D<1>, and an outlet pipe D leads to a tee-piece F communicating with a cock G for direct draught and the valve H. The latter comprises a body H<1>, Fig. 6, accommodating a truncated conical plug H2, Figs. 8 and 9, capable of rotation by a handle K fitted with a pin co-operating with stops or the like on the valve cover. The ports of the valve members are of the shape shown ; ports J, J, when in register permit supply to the vessel N through a pipe D and the valve O<3>; ports J<2>, J<2>, snifting through a pipe Q, and ports J<1>, J<1> delivery to a nozzle L through a pipe P, the ports J<2> being elongated so that they remain in register when the delivery ports are open. The container A is provided with a filling aperture covered by a plate A<2>, Fig. 3, and is provided with an extension having a cover A<8> and a ring A<7> against which bears a yoke A<6> which co-operates with a screw A<4> and a washer A<5> to keep the plate A<2> tightly closed. The pipes D, D<1> are fitted with valves C, C<1>, and the chamber N is surrounded by a bowl M<2> adapted to receive ice and secured to a closure plate S by hollow studs also serving for communication of the bowl with a drainagepipe R, which discharges on to the container A. '
Patent GB-937012-A (GB)
Title: Hot tops for use in the production of ingots and other castings
Inventor: MOORE ROY SPENCER
IPC: B22D7/10
Filed: 1961-07-05
Abstract: 937,012. Ingot moulds. FOSECO INTERNATIONAL Ltd. June 27, 1962 [July 5, 1961], No. 24297/61. Class 83 (1). A mould head, or head box, is lined by applying to a lining 8 of refractory already present in the mould head &c., a layer 7 of corrugated paper, card or like combustible material with the corrugations facing the interior of the mould &c., and applying a layer 6 of mouldable exothermic composition to the said corrugated surface. The exothermic composition contains a thermo-setting resin binder which is set by the residual heat from a previous casting operation, and is rammed into the annular space between the corrugated layer 7 and a core 4 on which are located thin metal sheets 5 which may be peeled away from the exothermic layer after removal of the core. Specification 627,678 is referred to.
Patent GB-716405-A (GB)
Title: Improvements in and relating to electron targets
IPC: H01J35/12
Filed: 1952-09-29
Abstract: 716,405. X-ray tubes. GENERAL ELECTRIC CO. Sept. 29, 1952 [Sept. 27, 1951], No. 24342/52. Class 39(1) An X-ray tube anode is cooled by the circulation therein of a metallic medium in liquid form, the anode incorporating a heater to maintain the medium as a liquid. A block 23 forms the base of the anode structure, to which is brazed two concentric shells 27, 28 having parallel end walls 29, 30. The outer wall 30 forms the target surface, and the space between the walls forms a cooling chamber 22. The cooling medium is led through a duct 24 into this chamber and flows out again through an opening 36. It consists of a comparatively low melting-point metal such as sodium, potassium, lead, bismuth, tin, or alloys thereof. As these are solid at normal temperatures a heater 50 is incorporated in order to maintain them in the liquid state during inactive periods. The ducts and other parts in contact with the circulating metallic liquid should be of resistant material such as iron, nickel, molybdenum, tungsten, tantalum, or stainless steel. If non-resistant metals such as copper, silver or gold are used, they should be isolated from the circulating metal, as in Fig. 4 (not shown), where the target mounting is of copper, which is protected from the cooling metal by a molybdenum shell.
Patent GB-375609-A (GB)
Title: Improved manufacture of condensation products of urea, thiourea and formaldehyde
IPC: C08G12/12
Filed: 1931-08-31
Abstract: Synthetic resins are prepared by adding a neutral or alkaline condensation product of urea and thiourea with formaldehyde to a hot acid condensation solution of urea with formaldehyde, and continuing the heating until a resinous product precipitates on cooling. Preferably a non-acid solution containing urea, thiourea, and formaldehyde in the molecular proportions of 1 : 1 : 2 is introduced into an acid solution containing at least 2 molecular proportions of formaldehyde to 1 of urea until 1 molecular proportion of combined urea and thiourea corresponds to 1,4-1,8 of formaldehyde.  In its simplest form, the process comprises the addition of a neutral solution of monomethylolurea and monomethylolthiourea to a hot acid solution of dimethylolurea. Examples are given.  The precipitated products of the examples are mixed, either in their acid condition or after neutralization, with cellulose, dried at a low temperature, ground and moulded under heat and pressure.  Specifications 213,567, 248,729, and 339,601, [all in Class 2 (iii), Dyes &c.], are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of aldehydes in general and of derivatives of urea and thiourea, and includes an example according to which a solution of urea and thiourea in neutral formaldehyde is added to hot acidified formaldehyde alone and the products which precipitate on boiling then dried.  This subject-matter does not appear in the Specification as accepted.ALSO:Synthetic resins are prepared by adding a neutral or alkaline condensation product of urea and thiourea with formaldehyde to a hot acid condensation solution of urea with formaldehyde and continuing the heating until a resinous product precipitates on cooling.  Examples are given.  The precipitated products of the examples are mixed, either in their acid condition or after neutralization, with cellulose, dried at a low temperature, ground and moulded under heat and pressure.  The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of aldehydes in general and of derivatives of urea and thiourea; this subject-matter does not appear in the Specification as accepted.
Patent GB-277506-A (GB)
Title: Improvements relating to automatically closed hydraulic valves
IPC: F16K17/32
Filed: 1926-10-04
Abstract: 277,506. Boving &. Co., Ltd., and Cook, H. D. Oct. 4, 1926. Safety cut-off valves.- A valve device adapted to close automatically in the event of an abnormal flow, of the kind comprising a butterfly valve held in the open position by a catch released by a falling weight itself released by a catch actuated by a paddle in the main conduit, is provided with means whereby the opening or closing movement of the main valve resets the catch mechanism. The control paddle d is carried by a spindle d<2> mounted in bearings in the bye-pass conduit c and is provided with a weighted lever e having a claw e<1> adapted to engage a lug f<1> on a weighted lever f freely pivoted on a spindle g. The boss of the lever f has a shoulder f<2> adapted when the lever falls to engage a corresponding shoulder h<1> on the catch h and disengage it from the sector i secured to the valve spindle b<1>. The sector i is provided with a segmental sheave i<1> wrapped by a wire rope connected to the valve-closing weight and with a second smaller segmental sheave wrapped by a wire rope connected to the piston l of a dashpot l<1>. The sector i is formed with cam surfaces m<1>, m<2> adapted to engage a roller n on an extension of the lever f to reset the catches as the main valve moves to its open or closed position. The main valve is re-opened by means of an auxiliary pump adapted to restore the liquid to the top of the dash-pot piston, during this operation a valve in the leakage passage is closed by a Bowden-wire mechanism actuated by a grip lever q<1> on the pump actuating lever q. This valve may be actuated directly by a treadle mechanism. A remote control for the device comprises an electric solenoid s adapted to actuate a catch t to release a weighted lever u connected. by a slotted link v to the catch lever e.
Patent GB-697771-A (GB)
Title: Iris diaphragm shutter for photographic objectives
IPC: G03B9/20
Filed: 1951-10-19
Abstract: 697,771. Photographic shutters. JUNGHANS, H., and JUNGHANS AKT.-GES., GEB. Oct. 19, 1951 [Oct, 30, 1950], No. 24507/51. Class 98 (i). In an iris diaphragm type of shutter having blades which move in the same direction to open and close, the blades which are symmetrical are pivoted at the edge of the exposure aperture and are reinforced around their pivots by a small extension of the blade which projects over the exposure aperture when the blades are open. Each projection which is covered at least during the last part of the closing movement by peripheral parts of a neighbouring blade serves as a guiding support for that blade to ensure proper interleaving. As shown, symmetrical blades 2 pivoted at 3 are reinforced by plates 8 and at 2h, this integral reinforcement projecting a distance s over the exposure aperture 1a in the open position. The blades move successively in opposite directions to make successive exposures under the control of a blade ring (not shown) which carries pins 11 that engage in slots 10 formed in the blades 2 and reinforcing plates 8.
Patent GB-730044-A (GB)
Title: Improvements in shuttlecocks and in the method of manufacture thereof
IPC: A63B67/18
Filed: 1952-10-01
Abstract: 730,044. Shuttlecocks. LASHLEY, C. J. W. Sept. 29, 1953 [Oct. 1, 1952], No. 24585/52. Class 132(3). A shuttlecock having a moulded plastic top and a cork base is characterised in that the end of the top adjacent the base is formed as a disc having a depending ring seated in a peripheral step in the wall of the base, the ring being secured to the base by an inturned anchoring member interlocking with a recess in the vertical wall or riser of'the step. In the construction shown in Fig. 1, a ring 7 has an anchoring member in the form of an inturned lip 7a which interlocks with a recess 8a. In a modification Figs. 3, 4 (not shown), the anchoring member comprises toothed prongs.