baber/WOPTO huggingface dataset:
Patent GB-758023-A (GB)
Title: Improvements in or relating to flowmeters
IPC: G01F1/26
Filed: 1953-12-17
Abstract: 758,023. Measuring mass How of liquids. GLOSTER AIRCRAFT CO., Ltd., and LONGFORD, C. G. Dec. 17, 1954 [Dec. 17, 1953], No. 35157/53. Class 69 (1). A flowmeter for indicating the mass rate of flow of a liquid has a disc biased to a position closing its inlet, the movement of which serves to indicate the rate of flow, and means for compensating for variations in density of the liquid. As shown, the disc 5 is biased to close the inlet 1 by means of a spring 6, its position being indicated at 21 by means responsive to the ratio of alternating currents in coils 17 and 17a, this ratio being dependent on the position of armature 15 secured to a rod 9 carrying the disc 5. The force with which the rod 9 resists movement of the disc 5 is derived from the pressure in a chamber 25 which is made to depend on the density of the liquid by providing a float 33 coupled to a plate 28 partially closing the outlet 27 of chamber 25, liquid being supplied to the chamber through by-pass tube 23. The effect of acceleration of the flowmeter in the direction of guide 38 is compensated by making the effective length of crank arm 31, through which the float 33 acts on plate 28, vary by attaching this arm to a sleeve 37 movable on the guide according to the acceleration effect on weight 39 attached to the sleeve; thus the effect of the acceleration on the float is neutralized. Alternative methods of biasing and mounting the disc 5, and of supplying liquid to the chamber 25, are described and illustrated.
Patent GB-305347-A (GB)
Title: Improvements in or relating to chain or sprocket wheels and the like
IPC: F16H55/30
Filed: 1927-12-30
Abstract: 305,347. Tucker, R. A. Dec. 30, 1927. Chain - wheels.-Chain-wheels or the like have teeth 4, 5 upon the edges of their peripheries either in the same plane or staggered as shown and bent or splayed outwardly from the central plane of the wheel. The wheel may be turned, cast, stamped, pressed, &c. in one piece or may be built up from separate members 2, 3 bolted, pinned, brazed, &c. together. The number of teeth on one side may be greater than that on the other. Intermediate discs, such as 1, Fig. 2, which may have plain or toothed peripheries and may be arranged in any number or order, may be arranged between the outer discs 2, 3. The chains are made to appropriate form.
Patent GB-619294-A (GB)
Title: Improvements in, or relating to, tractor ploughs
IPC: A01B15/14
Filed: 1946-11-30
Abstract: 619,294. Agricultural implements. BRANDON, H. J., and TILDESLEY, R. Nov. 30, 1946, No. 35553. [Class 6 (i)] A multi-furrow plough may be converted into a plough for cuttmg one less furrow by removing two adjacent plough bodies and replacing them by a single body carried in a position intermediate between the previous positions of the bodies removed. A three-furrow plough comprises a wheeled frame 12 carrying plough bodies arranged in echelon at 13, 14 and 15. Two bodies 14 and 15 may be removed and replaced by the framework shown in Fig. 4 in which the U-shaped member 37 is secured to the frame in place of the body 15 and the bent-over end 35 of the limb 32 replaces the body 14. The limb 32 is provided with fixing holes to receive one of the removed plough bodies.
Patent GB-819647-A (GB)
Title: Improvements in or relating to circuit-arrangements for automatic frequency stabilization of an oscillator relative to the frequency of a pilot wave
IPC: H03L7/20
Filed: 1955-12-13
Abstract: 819,647. Automatic frequency and phase control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 13, 1955 [Dec. 16' 1954; July 7, 1955], No. 35748/55. Class 38 (4). A high-frequency oscillator 3 is synchronized relative to an oscillator 1 of sub-multiple frequency by having its output and that of a pulse generator 2 synchronized with the oscillator 1 applied to a phase discriminator 4 whose output is applied retroactively through a low pass filter 6 to stabilize the oscillator 3, and the discriminator output is also applied at 7 to phase modulate the output of the standard oscillator 1 so that the pulses follow, almost to the same extent, any phase shift of the oscillator 3. The catching range of the system is thereby increased by a factor n where n is the ratio of the frequencies of the oscillators 3, 1, provided this increase in catching range lies within the holding range. Spurious distortion of the control voltage by modulation or other products is also reduced, as when (Fig. 5, not shown), the oscillator 3 is bent with an interpolation oscillator of adjustable frequency and the sum or difference frequency is stabilized. The phase modulator 7 and pulse generator 2 may be a single valve 8 with earthed cathode, grid current cutting off the positive half-cycles of the oscillator input and an anode circuit inductor 12, critically damped by a shunt resistor 14, differentiating the commencement of saturation, i.e. cut off of the half cycles, so that if the resulting sawtooth D.C. voltage d from the discriminator is added to the oscillator input a the time of the sum voltage cutting the commencement of limiting is varied and the differentiated output pulses are time, i.e. phase, modulated. Specifications 640,351, 679,767 and 724,942 are referred to.
Patent GB-394665-A (GB)
Title: Jointing of wood and other materials by a dry process
IPC: C09J7/10
Filed: 1931-12-28
Abstract: Films for uniting wood and other materials are made from aqueous solutions containing albuminous substances such as glue, blood, casein, and isinglass, formaldehyde or compounds yielding formaldehyde, additional tanning substances such as tannin, chrome alum and sodium bichromate and softening agents such as glycol and glycerine to which ammonia or organic solvents such as acetone, methyl alcohol and lower fatty acid esters, for example methyl and ethyl acetate may be added.ALSO:Wood and other materials are united by dry films made from aqueous solutions containing albuminous substances such as glue, blood, casein, and isinglass, formaldehyde or compounds yielding formaldehyde, additional tanning substances such as tannin, chrome alum, and sodium bichromate and softening-agents such as glycol and glycerine, to which ammonia or organic solvents such as acetone, methyl alcohol and lower fatty acid esters for example methyl and ethyl acetate may be added. Alternatively, a paper sheet coated on both sides with the solution by means of rolls and dried may be used.  Adhesion is effected by pressure at a temperature of about 70 DEG  C.
Patent GB-1134376-A (GB)
Title: Multilayer printed circuit assemblies
IPC: H01R12/58
Filed: 1967-08-04
Abstract: 1,134,376. Electric couplings. INTERNATIONAL STANDARD ELECTRIC CORP. 4 Aug., 1967 [10 Aug., 1966], No. 35861/67. Heading H2E. [Also in Division H1] Printed circuit boards are stacked one above another and are provided with aligned holes some or all of which pass through printed lands (e.g. of copper) and desired interconnections, between circuits on the boards, are made by pins N (Fig. 1) which are larger in diameter than the holes into which they are pressed. Both the pins and lands C1, C2 may be gold-plated. The pins protrude from the holes in a top cover plate having recesses in which " flat packs " of components are mounted and the packs are soldered to the pins (Figs. 2, 3, not shown). A base plate of the stacked assembly is larger in area than the boards and has a terminal strip along one side, which strip protrudes from the stack and is connected to the pins by a printed circuit on the base plate.
Patent GB-1299977-A (GB)
Title: Improvements in and relating to the formation of membranes
IPC: B01D63/06
Filed: 1970-07-27
Abstract: 1299977 Reverse osmosis module HYDRONAUTICS Inc 27 July 1970 [31 July 1969] 36250/70 Headings B1X and B2E A process for forming a tubular structure comprising a permeable membrane and a tubular support comprises introducing a casting liquid which comprises a film forming material and a carrier liquid into the tubular support in quantity exceeding the amount necessary to wet the entire interior wall surface of the support, draining excess casting liquid from the support and removing the carrier liquid from the film of casting liquid remaining on the support to cure the film by passing a column of liquid axially through the support. The casting liquid preferably comprises cellulose acetate, acetone and formamide; the carrier liquid is then removed to cure the membrane film by passing cold saline or cold water through the tubular support. Other casting liquid components are mentioned. A reverse osmosis module comprises (Fig. 2) parallel porous tubular supports 30, headers 32, 34 and 4-way valves 42, 52 for successive introduction and removal of casting liquid, curing liquid, hot water (to form an "active skin" on the membrane) and cold water, for preparation of the membrane film. In use, saline under pressure is supplied through line 40 and purer water is collected from the outside of tubes 30. When the module needs servicing, the membranes are dissolved away by a solvent and fresh membranes formed in the module as before.
Patent GB-825383-A (GB)
Title: Improvements in or relating to klystron oscillator tubes
Inventor: RUGGLES PERCY CHARLES
IPC: H04N5/208
Filed: 1957-11-22
Abstract: 825,383. Velocity-modulated tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Aug. 14, 1958 [Nov. 22, 1957], No. 36464/57. Class 39(1). In a klystron tube, which comprises an electron beam source 1, a collector electrode 9 and two resonators 3, 4 positioned in succession along the beam path and having apertures through which the beam passes, a grid electrode 11 is provided across the aperture nearest the beam source and has a central hole 12 having an area at least one ninth of that of the aperture. This arrangement is said to reduce undesired frequency modulation noise effects. As shown, similar grids 13, 15, 16 are also provided across the ends of the drift tube 6 and across the aperture most remote from the cathode 1, the central hole in each grid preferably having an area at least one quarter of that of the aperture in which the grid is situated. The resonator structure, drift tube 6 and collector electrode 9, provided with cooling fins 10, are united to form a single structure which is part of the vacuum -tight envelope of the oscillator tube.
Patent GB-335822-A (GB)
Title: Improvements in and relating to heated windshield wipers
IPC: B60S1/54
Filed: 1929-11-28
Abstract: 335,822. Colley, R. N. Nov. 28, 1929. Windows, cleaning.- A windscreen wiper is provided with spaced wiping strips between which a heating medium is supplied to keep the windscreen free from ice &c. The strips 10, 10<a> are mounted in a casing fitted with a baffle 16 arranged in a gap in a. central strip 12, the casing being supplied with exhaust gases through a central orifice 15. Discharge openings 15a are provided at the bottom of the casing, the ends of which are fitted with packing strips 13, 13a. The wiper is oscillated about a centre, and is supplied with exhaust gases through a handcontrolled valve.
Patent GB-804523-A (GB)
Title: Steroids and the preparation thereof
IPC: C07J75/00
Filed: 1955-05-17
Abstract: The invention comprises 21-hydroxypregnane-3,20-dione and the corresponding allopregnane compound and a process for preparing a steroid compound by hydrogenating desoxycorticosterone to produce 21-hydroxypregnane-3,20-dione, the hydrogenation being effected as described in Example (1).  21-Hydroxyallopregnane is obtained by hydrolysing 21-acetoxy-allopregnane, which has been produced by hydrogenating 21-acetoxy- D 5-pregnen-3b -ol-20-one and oxidizing the resulting 21-acetoxyallopregnan-3b -ol-20-one.  In Example (1) desoxycorticosterone is hydrogenated in the presence of a palladium/calcium carbonate catalyst to produce 21-hydroxypregnane-3,20-dione; in Example (2) 21-acetoxyallopregnane is hydrolized to 21-hydroxyallopregnane. The 21-acetoxyallopregnane is obtained as described above or by hydrogenating desoxycorticosterone acetate over a palladium calciumcatalyst. Specification 804,522 is referred to.
Patent GB-1152475-A (GB)
Title: Improvements In Getter-Ion Vacuum Pumps
IPC: H01J41/20
Filed: 1966-08-16
Abstract: 1,152,475. Ion pumps. LEYBOLDHEREAUS - VERWALTUNG G.m.b.H. 16 Aug., 1966 [17 Aug., 1965], No. 36706/66. Heading H1D. Cells of at least two different configurations having optimum performance characteristics in different pressure ranges are combined in a multi-cell anode of a getter-ion vacuum pump to provide a high performance over a wide pressure range. Several cells of 10 mm. diameter may be arranged around each of several cells of 50 mm. diameter. Alternatively, the cells may differ in length, and may in additon be of different materials. Provision may be made for vamping the operating voltage and/or the magnetic field strength of the pump, and cells of one configuration may be rendered inactive. The cells may be exchangeable, a stock of cells of different configurations being accommodated in an evacuated magazine associated with the pump.
Patent GB-1098425-A (GB)
Title: Improvements in or relating to automatic analysis apparatus
IPC: B01L99/00
Filed: 1965-08-26
Abstract: 1,098,425. Automatic titrator. K. LADENDORF, E. LADENDORF, W. LADENDORF, P. LADENDORF, E. LADENDORF, and K. F. LADENDORF [trading as BRAN & LUBBE KOMM GES]. Aug. 26, 1965 [Aug. 26, 1964], No. 36758/65. Heading B1X. In an automatic titrator, the liquid to be analysed is conveyed by valve 2 and line 12, and reagent from vessel 9 by valve 1 and line 11, successively through line 10, peristaltic pump 3 and line 14 to vessel 4 which is provided with means 5 for determining the end point of the titration. Vessel 4 may be provided with overflow 8, and with a line 13 containing valve 7 to empty the vessel. Pump 3 has means for determining the volume of liquid passed through and is controlled by a limit relay from the end-point determination means 5. The valves 1, 2, and 7 may be controlled by solenoids. End-point determinations mentioned are by pH or by redox potential.
Patent GB-1518219-A (GB)
Title: Tunnel kilns
IPC: F27B9/32
Filed: 1976-09-06
Abstract: 1518219 Tunnel kiln construction KERAMAG KERAMISCHE WERKE AG and ADOLF A FLEISCHMANN 6 Sept 1976 [11 Sept 1975] 36797/76 Heading F4B A tunnel kiln is constructed in a number of sections, each formed by two side walls and at least one roof slab carried in a stationary supporting frame. The side slabs comprise layers of refractory and/or insulating materials 2a, 2b, 2c, Fig. 2, held together by ties 4 and supported by the uprights 1 of the frame and flanges 1c projecting from the pillars and linked by longitudinal member 1d. The roof slabs 3 are formed of layers of material 3a, 3b held by the tie-rods 4 secured to supporting beams 5 forming a framework resting on the side bars 1b of the frame, and provided with hooks 6 to enable a roof strut to be lifted and placed on rails 7 on an adjacent roof portion. Labyrinth type seals are formed between adjacent struts, and the longitudinal member 1d carry a sand seal trough 10 engaging a flange depending from the kiln trucks 9. Part of the frame may be used to form air supply ducts 11, Fig. 2.
Patent GB-1057460-A (GB)
Title: Improvements in or relating to pillows
IPC: A47G9/10
Filed: 1964-09-08
Abstract: 1,057,460. Pillows. T. T. MARU. Sept. 8, 1964 [Sept. 23, 1963], No. 36817/64. Heading A4M. A pillow consists of two triangular supports 1 having incurved sides and connected by three bars 2 which may be chromium-plated brass tubes filled with plaster of paris and may be padded.
Patent GB-1038342-A (GB)
Title: Process for the production of picolinic acid derivatives
IPC: C07D213/81
Filed: 1963-09-19
Abstract: 3-Hydroxypicolinamide and novel 3-hydroxy-picolinonitrile are prepared by reacting chlorine or bromine in an aqueous acid medium with a compound of the formula <FORM:1038342/C2/1> wherein Y represents a cyano radical and Z represents a hydrogen atom or the carbamoyl radical and 3-hydroxypicolinamide is prepared by the above process when (a) Y represents the carbamoyl radical and Z represents a hydrogen atom; or (b) Y and Z together represent the diradical -CO-NH-CO-.  a  - Ureido - 2 furanacetonitrile is prepared by reacting furfural with sodium cyanide to give 2-furanglyconitrile which is subsequently heated to 100 DEG  C.  a  - Amino - 2 - furanacetonitrile hydrochloride is prepared by reactin 2-furanglyconitrile with liquid ammonia and neutralizing the resultant base with ethanolic hydrogen chloride.  a  - Amino - 2 - furanacetamide hydrochloride is prepared by treating a -amino-2-furanaceto-nitrile with conc. hydrochloric acid.  2H - Pyrido[2,3 - e][1,3] oxazine - 2,4(3H)-dione is formed by the reaction of a lower chloroformic alkyl ester with 3-hydroxypicolinamide in the presence of quinoline or symmetrical collidine.
Patent GB-924355-A (GB)
Title: Improvements in or relating to braking systems for rail vehicles
IPC: B60T13/68
Filed: 1959-10-30
Abstract: 924,355. Electrically-actuated braking systems. KNORR-BREMSE G.m.b.H. Oct. 30, 1959 [Oct. 31, 1958], No. 36948/59. Class 103 (1). An electropneumatic brake system has an electrical conductor movable in a magnetic field to adjust a control valve which controls the brakes through a triple valve. The driver of a driving vehicle adjusts a resistance 3 to set up a corresponding voltage in a conductor loop 13 rotatably mounted in the field of permanent magnet 15 on a trailer vehicle, the loop rotating in the direction of the arrow to raise a member 19 of a supervisory device 21 against spring 24 and control pressure in chamber 25. The valve 29 is closed to close the connection of supply line 39 with chamber 27; on further rising of member 19, chamber 27 is connected to atmosphere via member 19 and port 35, the member 19 being returned to a lap position when the pressure difference in chambers 25 and 27, and spring 24 overcome the force exerted by loop 13. The drop in pressure in chamber 27 is communicated to chamber 43 of triple valve 49 to cause this valve to supply compressed-air from reservoir 87, charged from line 39 via one-way valve 91, to the brake cylinder 81, until the triple valve is also returned to a lap position. Adjustment of resistance 3 will increase or decrease the force exerted by loop 13 on device 21 to produce a stronger brake application or produce brakerelease wherein the line 39 is connected to device 21 and valve 49, and brake cylinder 81 is vented via port 65 as shown in Fig. 1. The permanent magnets may be replaced by electromagnets.
Patent GB-903329-A (GB)
Title: Improvements in or relating to push door mechanism
IPC: E05F15/02
Filed: 1960-10-27
Abstract: 903,329. Door operating appliances. NATIONAL PNEUMATIC CO. Inc. Oct. 27, 1960 [Nov. 6, 1959], No. 36965/60. Class 65 (1). A door is controlled by a differential piston- and-cylinder assembly the control means of which either connect fluid at high pressure to the large side of the assembly and fluid at low pressure to the small side so that the door is held closed with a large locking force or connect fluid at a low pressure above atmospheric pressure to the large side of the assembly and fluid at low pressure to the small side so that the door is held closed with a reduced force which can be overcome by manually pushing on the door. The assembly may also be employed to open the door. High-pressure fluid (e.g. air at 85-90 p.s.i.) is supplied through a pipe 24 to a solenoidoperated control-valve 32 and an adjustable pressure regulator 58 which reduces the pressure at its outlet to a desired lower value, e.g. 25 p.s.i. When the door (not shown) is to be subjected to the large locking force the valve 32 is set to apply the high pressure to one inlet port 48 of a shuttle valve 46, the other inlet port 50 of which is connected to the outlet of the pressure regulator 58, so that the high pressure is applied to the large side 4 of the assembly A through a speed fitting 56. The small side 2 of the assembly is permanently connected to the outlet of the pressure regulator 58 through a relief valve 72 so that the pistons 8, 10, which are operatively linked to the door by an arm 18 are held in the left-hand position with a very large force. When this force is to be reduced to permit the door to be manually opened the valve 32 is operated to vent the port 48 of the shuttle valve and the shuttle 54 then moves under the action of the pressure from the regulator 58 and applies this pressure to the large side 4 of the assembly. When the opened door is released it will re-close under the reduced differential force acting on the pistons, the speed of re-closing being controlled by the speed fitting 56. In an alternative arrangement (Fig. 2, not shown) in which the assembly A is also employed to open the door, the small side 2 is normally subjected to atmospheric pressure but may be subjected to the high pressure in the pipe 24, when the door is unlocked, by the actuation of a second solenoidoperated control valve electrically interlocked with the valve 32. The high pressure acting on the piston 8 and the low pressure from the regulator 58 acting on the piston 10 provide a resultant force acting in the door-opening direction. The second valve may be actuated by the user of the door through a treadle switch or a switch incorporated in the door handle. U.S.A. Specification 2,419,964 is referred to.
Patent GB-1403548-A (GB)
Title: Thermal compensator valves
IPC: F15B21/045
Filed: 1972-08-09
Abstract: 1403548 Fluid-pressure servomotor systems CATERPILLAR TRACTOR CO 9 Aug 1972 37195/72 Heading G3P [Also in Division F2] A thermal compensator valve 30, which is  designed to stabilize the operating characteristics of a hydraulic differential pressure generating device 10 over a broad temperature range, comprises inlet and outlet passages 39 and 41, an intermediate passage 37, a spool 45 which is formed with two sets of ports 48 and 49, and a thermal element 50. At all operating states of the valve, at least a small flow takes place between the inlet 39 and outlet 41, such flow being by way of ports 48 and passage 37 when the spool is positioned as shown. Accordingly, the thermal element can respond to increases in temperature of the controlled fluid, such increases resulting in the spool 45 being moved to the left by piston rod 55 whereupon the inlet and outlet are brought into communication by way of ports 49 and passage 37. When connected to the device 10, the valve is located in parallel to a Venturi 13 which in turn is connected to the opposite sides of a transducer 19. The transducer piston 17 moves in response to a pressure differential thereacross, which differential is proportional to the speed of a displacement pump 11 feeding the Venturi. Thus a signal is generated proportional to the speed of the positive displacement pump, and such signal can be used in conventional servo control loop incorporating the pump drive.
Patent GB-1142742-A (GB)
Title: Device for continuous mixing
Inventor: HENZLER HANS-JURGEN
IPC: B01F5/00
Filed: 1966-08-19
Abstract: 1,142,742. Mixing in conduits. INSTITUT FUR CHEMIEANLAGEN. 19 Aug., 1966, No. 37280/66. Heading B1C. A fluid mixing device comprises a mixing pipe 1, a coaxial internal feedpipe 2, and two external feed lines which lead tangentially into the mixing pipe in the same cross-sectional plane as each other and are parallel as at 3, 4 or coaxial as at 4, 5 but arranged so that one carries fluid to rotate clockwise and the other anti-clockwise in the pipe so that elliptical eddies in cross-sectional planes are formed.