baber/WOPTO huggingface dataset:
Patent GB-984384-A (GB)
Title: Permselective membranes of anion exchange resins
IPC: C08J5/22
Filed: 1962-12-20
Abstract: A curable synthetic resin is obtained by condensing a glycydyl ether with an aliphatic, cycloaliphatic or aromatic compound containing at least two reactive amino hydrogen atoms, in such amounts that 0.5 to 1.5 amino hydrogen atoms are present for each epoxide group of the glycidyl ether. The resin is applied to a support and cured to give a permselective membrane.  The preferred glycidyl ethers are the glycidyl ethers of the hydroxy-alkylation products of polyhydric alcohols (including monosaccharides and disaccharides), polycarboxylic acids, polyamines (including polyethylene imine), alkanolamines, hydroxycarboxylic acids, aminocarboxylic acids, polyhydric phenols, phenolcarboxylic acids and aminophenols. The polyhydric compounds to be hydroxyalkylated may have had their total number of reactive hydrogen atoms reduced by the formation of esters, amides ethers or acetyl groups by means of carboxylic acids, alcohols, amines or aldehydes.  Amines specified are diethylenetriamine, triethylenetetramine, tetraethylenepentamine, methyl-bis-3-aminopropylamine, ethylenediamine, propylenediamine, butylenediamine, phenylenediamines, polyethyleneimine and dipropylenetriamine. The glycidyl ether may first be reacted with diethylamine.  A triglycidyl ether is prepared by heating 1 mol. of 1,1,1-trimethylolpropane and 3 mols. of 1,2-propylene oxide in the presence of small quantities of potassium, hydroxide in an autoclave at 140 DEG  C., reacting the product with 3 mols. of a -epichlorohydrin in the presence of boron trifluoride at 70-80 DEG C. and reacting the chlorohydrin obtained with sodium hydroxide at 50 DEG C. to give a product having a content of epoxy oxygen of 6-8% by weight.ALSO:A process for the preparation of permselective membranes comprises condensing a glycidyl ether with an aliphatic, cycloaliphatic or aromatic compound containing at least two reactive amino hydrogen atoms, in amounts such that 0,5-1,5 amino hydrogen atoms are present for each epoxide group of the glycidyl ether, to form a synthetic resin, applying the synthetic resin to a support and thereafter curing.  The supporting fabric can be formed from polyamide, polyacrylonitrile, polyvinyl chloride, glass fibres, viscose, staple rayon, cotton or linen fibres.  The composition is preferably applied by a doctor blade to one or both sides of the fabric.
Patent GB-1355696-A (GB)
Title: Blast furnace operation
IPC: C21B7/16
Filed: 1971-10-15
Abstract: 1355696 Blast furnace operation CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 15 Oct 1971 [15 Oct 1970 23 Oct 1970 30 Oct 1970 3 Nov 1970] 48166/71 Heading C7D [Also in Division F4] A method of operating a blast furnace comprises injecting a fluid hydrocarbon through one or more burners disposed in the tuyeres (see Division F3-4), the resultant combustion gases being at about 1600‹C-1800‹C and injecting a reducing gas into the lower part of the reserve zone of the furnace at a temperature substantially equal to that of the material in the furnace. The reserve zone is that zone of the furnace where the charge material and ascending gases are approximately at the same temperature. The reducing gas is mainly CO and H 2  and may be reformed gas, gas from a reactor or conventionally treated blast furnace gas or coke oven gas. The temperature of the reducing gas is controlled automatically or otherwise by the temperature of the rising gases at the injection point.
Patent GB-1367512-A (GB)
Title: Hydrostatic machines with cylinder capacity variation control by  distributor rotation
IPC: F01B3/10
Filed: 1971-10-15
Abstract: 1367512 Reciprocating pumps and motors SOC ANON AUTOMOBILES CITROEN 15 Oct 1971 [21 Oct 1970] 48182/71 Heading F1A [ Also in Division F2] In an hydraulic pump or motor comprising a rotary cylinder block 3 engaging a ported valve plate 4 which is angularly adjustable to adjust the cylinder capacity, openings 19, 20 are provided in the valve plate surface between the ports 12, 13 and communicate in turn with the adjacent port 12 on angular adjustment of the valve plate, so that the overlap angle traversed by the cylinder ports while out of communication with the valve plate ports decreases as the angular adjustment of the valve plate is increased from its maximum cylinder capacity to its minimum cylinder capacity setting. Openings 19 and 20 comprise straight and angled bores, respectively, cooperating with a groove 18 in head member 8. Valve plate adjustment of a pump or motor 50, 51 or a hydrostatic transmission, Fig. 7, is effected by a servomotor piston 34, acting via rack and pinion 33, 31, and controlled by a centrifugal regulator 41 operating a slide valve 40 which connects the right hand side of piston 34 either to the output of feedpump 37 or to reservoir 39, the left-hand side of piston 34 being connected to the feedpump output. When the righthand side of piston 34 is connected to the reservoir, the piston moves to the right until either valve 40 is operated to changeover the connection from the reservoir to the pump 37, or a slide valve 48 in the piston engages a member 43 and is moved to the left to cut-off communication between valve 40 and the right-hand side of the piston and establish communication between the right and left-hand sides of the piston. Member 43 has surfaces 52, 53 and 54 which are positioned for engagement by valve 48 according to the pressures in the high and low-pressure sides of the transmission to provide different cylinder capacity positions of the valve plate. A pressurelimiting valve 61 is provided in piston 34.
Patent GB-1203435-A (GB)
Title: Improvements in vehicle suspensions
Inventor: GEE DAVID WILLIAM
IPC: F16F9/36
Filed: 1967-10-24
Abstract: 1,203,435. Strut type suspensions. GIRLING Ltd. 9 Oct., 1968 [24 Oct., 1967], No. 48187/67. Addition to 1,073,473. Heading B7D. [Also in Division F2] In a suspension strut as described in Specification 1,073,473 the gas spring is formed by a volume of air or other gas under pressure above the fluid in the damper, and a reservoir 25 for fluid, which acts as a lubricant for the piston, is formed between the piston seal 22 and a bearing sleeve 17.
Patent GB-1444090-A (GB)
Title: Steadies for grinding machines
IPC: B24B41/06
Filed: 1972-10-19
Abstract: 1444090 Grinding machine steadies KEIGHLEY GRINDERS (MACHINE TOOLS) Ltd and R T SHACKLETON 16 Oct 1973 48287/72 Heading B3D A steady for a grinding machine comprises a frame, a pair of steady tips 7, 8 for contacting a workpiece 4 when in use, a lever 9 carrying one steady tip 7 and pivoted on the frame at a fixed point 11 remote from the tip, and means 12, 13 for displacing the tip by pivoting the lever, the displacing means having a plunger 12 bearing against the lever and displaceable longitudinally and the lever preventing substantial movement of the lip in a direction transverse the plunger. The frame has a base-plate 2 for clamping to the table of a grinding machine and has pivots 11, 15 for respective levers 9, 10, each of which has a lip 7, 8 for contacting the workpiece 4. The lever 9 is urged by a spring 14 against a plunger 12 which is adjustable by a screw mechanism or actuating piston 13 to displace the lever and engage the tip. 7 with the workpiece. The lever 10 has an arm enengaged by a contact surface 16 of a pivot member 17 which is also actuated by the mechanism 13. The lever 9 is disposed such that the frictional force applied by the workpiece to the tip 7 acts in a line joining the tip 7 to the pivot 11  so that the lever resists movement of the tip in the direction of that line.
Patent GB-1398430-A (GB)
Title: Process for reducing the level of contaminating mercury in aqueous solutions
IPC: C02F1/52
Filed: 1972-10-20
Abstract: 1398430 Reducing the mercury content of aqueous solutions TOMS RIVER CHEMICAL CORP 20 Oct 1972 [21 Oct 1971 8 Sept 1972] 48497/72 Heading C1C [Also in Division C2] A process for reducing the mercury content of an aqueous solution comprises treating the solution with a mercury reactive factor and an adsorbent, filtering and recovering a solution having a reduced mercury content. A mercury reactive factor is one or more materials which are capable of one or more of the following: (i) will reduce mercury to its metallic state, (ii) will precipitate mercury as an insoluble salt and (iii) will complex with mercury. Suitable such materials are (a) metals, e.g. Sn, Mg, Cu, Fe, Zn, Al, (b) sulphide-ion-generating agents such as alkali metal sulphides and thiosulphates, (c) thiocarbamyl derivatives, (d) thiols or mercapto compounds and (e) polysulphide compositions, i.e. compositions obtained by treating a porous or adsorbent substrate with a mixture of sulphur, sodium sulphide and water. The preferred adsorbent is activated carbon. The mercury reactive factor may be impregnated in the adsorbent. The process may be utilized in the removal of mercury catalyst from the product solution resulting from the anthraquinone sulphonation reaction.
Patent GB-1418456-A (GB)
Title: Steam boilers
IPC: F22B21/34
Filed: 1971-10-19
Abstract: 1418456 Steam boilers FOSTER WHEELER JOHN BROWN BOILERS Ltd 4 Dec 1972 [19 Oct 1971] 48620/71 Heading F4A In a water tube boiler in which a radiant heating furnace chamber 12 leads to an upright convection pass 14 provided with banks 50, 52 of substantially horizontal superheat tubes, upright evaporator tubes 62 are arranged in horizontally spaced groups 60 extending through the superheat tubes between headers 64, 66. The chamber 12 is lined with evaporator tube panels connected between steam drum 24 and water drum 26 and downcomer tubes line the convection pass. An economizer bank 54 is also provided in the pass 14 and tubes 60 may pass through this bank as shown or header 64 may be placed between the banks 50 and 54 to prevent overheating in the tubes 62 in the region of the economizer. In the embodiment shown one or more burners 34 are mounted in the roof of the furnace chamber and tubes 16 of dividing wall 18 are pulled apart to allow gases to flow up the convection pass. In another embodiment (Fig. 3, not shown) the furnace chamber is fired by burners (82) mounted in the lower end of a side wall and an outlet at the top of the dividing wall allows gases to flow down the pass 14. A modified arrangement of the tubes 62 is shown (90) in which they are bent out of the vertical at upper and lower ends to pass through the wall of the pass to connect with vertical headers (92, 94).
Patent GB-1410044-A (GB)
Title: Motorized drive and brake mechanism
IPC: B60T7/12
Filed: 1972-10-23
Abstract: 1410044 Winding gear SIGMA INSTRUMENTS Inc 23 Oct 1972 [10 Dec 1971] 48765/72 Heading B8B A brake and drive apparatus for a shaft 7 of winding gear, comprising an electrical stepping motor 6 which through a one-way clutch 22, screw brake mechanism 11, a gearing 13, 15, 14 drives the shaft 7 in a load lifting direction, sustains a load when the motor is stopped and permits lowering of the load upon motor reversal. During load lifting, the motor shaft 10 rotates to screw an internally threaded pinion 17 therealong, until a friction pad 18 thereon axially engages a friction pad 20 on a sleeve 21, which is axially forced into abutment with a shoulder 19 on the shaft 10, and the pinion 17 is therefore driven by the frictional engagement to power the shaft 7. With this direction of rotation, the one-way clutch 22 arranged between the sleeve 21 and the apparatus casing 12, freewheels. When the motor shaft 10 is stopped, the loaded shaft 7 drives back through the gearing 14, 15, 13, 17 to maintain the screw brake in engagement, but the opposite direction of rotation of the sleeve 21 is prevented by the clutch 22. For lowering the load, reversal by the motor 6 and shaft 10 tends to unscrew the brake plates 10, 20 permitting the load to lower until the load overruns the reversed shaft 10 whereby the brake screws up into engagement again. The one way clutch comprises a band of rollers axially parallel to the shaft 10 and housed in wedge-shaped casings.
Patent GB-1322929-A (GB)
Title: Short-radius squeeze bending apparatus
IPC: B21C37/28
Filed: 1970-10-14
Abstract: 1322929 Angular bending of tubes FOSTER WHEELER CORP 14 Oct 1970 [14 Oct 1969] 48877/70 Heading B3E A bent tube is further bent into a small radius between a pair of outer dies 12 and an inner die 14 which have cavities for receiving the tube and are movable in unison from an open to a closed position where the outer dies abut each other. The pair of outer dies 12 and the inner die 14 have co-ordinated movement by means of a pair of links 16 and a yoke 18 accommodating the outer dies in converging guideways 76, 78. The yoke is reciprocated along a pair of side supports 60 by a power cylinder 80, so that the outer dies and inner die are brought together at a uniform rate of movement. The tube is heated before bending.
Patent GB-1454501-A (GB)
Title: Transformer end platforms
IPC: H01F27/30
Filed: 1972-10-25
Abstract: 1454501 Laminates PERMALI Ltd 23 Oct 1973 [25 Oct 1972] 49094/72 Heading B5N [Also in Division H1] An insulating end platform 20 for a transformer comprises at least one composite structure of flat laminated composition the lamination planes being parallel to the general plane of the platform at least some of the laminations being formed of a polymeric material incorporating reinforcing strands or fibres of an inorganic or organic material, The reinforced laminations may be of epoxy resin, phenol formaldehyde, a silicone resin, a polyester resin or other thermosetting synthetic plastics, in which fibres of a non-hygroscopic material such as glass are bonded. A lamination may consist of regular sections, the fibres within any one section being parallel but varying regularly in direction from section to section as shown in Fig. 5b. Laminations may also be complete with the fibres being unidirectional (Figs. 4a, 4b, not shown). Each composite structure is formed by pressure curing stacks of reinforced with fibre directions regularly arranged from lamination to lamination. Lamination consisting of sections have a section in one lamination arranged to overlay the joint of sections in an adjacent lamination. Modifications to the composite structure include at least one intermediate layer of wood veneer impregnated with phenolformaldehyde or transformer oil, woven or felted fibrous material or paper all impregnated with phenolformaldehyde. Another embodiment (not shown) has two composite structures spaced by webs of the same composite structure material perpendicular thereto.
Patent GB-1479912-A (GB)
Title: Manufacture of lengths of coaxial products
IPC: H01B13/016
Filed: 1974-11-12
Abstract: 1479912 Extrusion coating ANDREW CORP 12 Nov 1974 [12 Nov 1973] 49244/74 Heading B5A [Also in Divisions B3 and B8] A method of making a length of coaxial product 10, e.g. tubing or electrical cable, having inner and outer members and an intermediate layer of material 16 between them comprises, advancing a length of inner member, e.g. conductor 11, forming a layer of the material on the surface of the inner member by passing it through an extrusion nozzle 20 while extruding the material 16, advancing a flat metal strip 14 alongside the inner member, shaping the strip around the extrusion nozzle to form it into the outer member and joining longitudinal edge portions of the shaped strip while it is still around the extrusion nozzle. As the conductor 11 passes through the nozzle 20 it is guided by an adjustable barrel 23 in a passageway 24. The conductor 11 is a solid conductor of copper or copper clad aluminium or it may be hollow or of multistrand construction while the strip 14 is of copper, copper clad aluminium or aluminium. The strip 14 passes through a preforming tool 40 and it is formed in a tapered bore 41a in a die 41. The material 16 is supplied in molten form from an extruder 17 and is maintained under pressure inside the nozzle. As it emerges from the nozzle it expands and fills the space between the inner and outer members. As the edges of the strip 14 converge, a tucking tool (43) engages the edges and overlaps them, Fig. 9 (not shown). The edges are joined before the material 16 expands by ultrasonically welding them with a portion of the nozzle forming an anvil 50 for the welding operation. A disc 52 is oscillated vertically at a frequency of about 15,000 Hz to effect the weld and a force F is applied to the disc coupler 53 at an acoustical node to increase the force of the disc against the workpiece. The disc is rotated at a peripheral speed equal to the speed of advance of the strip 14. The surface of the anvil 50 is formed with narrow grooves extending parallel to the axis of the finished cable. A corrugating station may be provided adjacent the nozzle 20 so that the material 16 can expand into the corrugations or the outer member may be heated so that the material is bonded to it as it expands. Alternatively a non-expandable material may be used in conjunction with a tapered extrusion nozzle that increases the thickness of the material downstream of the welding station.
Patent GB-1314759-A (GB)
Title: Membrane type storage device for low temperature liquefied gas
IPC: F17C3/02
Filed: 1971-10-26
Abstract: 1314759 Carrying liquefied gases BRIDGESTONE LIQUEFIED GAS CO Ltd 26 Oct 1971 [31 Oct 1970] 49566/71 Heading B7A [Also in Division F4]  The outer rigid shell la of a cold liquefied gas storage tank, e.g. the inner hull of a ship is lined internally with load-bearing heat insulation material 2, e.g., polyurethane foam which is itself lined with a first membrane tank 3 within which and in close proximity therewith is a second membrane tank 3a containing the stored liquefied gas, e.g. petroleum gas; the second tank being constructed of thinner plate than the first. Tanks 3, 3a are of nickel-steel or aluminium and the space between them is connected by a pipe 10 to a vacuum pump 9. A gas analyser (not shown) connected to pipe 10 serves to indicate leakage through tank 3a.
Patent GB-1132973-A (GB)
Title: Improvements in hydraulic transmission power plants
IPC: F01B11/08
Filed: 1965-11-23
Abstract: 1,132,973. Hydrostatic transmissions. SOC. ANON. ANDRE CITROEN. 23 Nov., 1965 [25 Nov., 1964], No. 49651/65. Heading F2C. [Also in Division F1] A hydrostatic transmission comprises an I.C. engine of the free piston type, Fig. 1, not shown, having a plunger 2 affixed to each end of the piston, each plunger 2 being in a cylinder 1 and delivers liquid via valve 4 to a motor B, liquid being drawn from sump 7 through valve 3. Pulse dampers C, D adjacent valves 3, 4 each comprise a diaphragm 10c held between perforated cups 11c, 12c and being acted on by liquid on one side and gaseous pressure corresponding to the mean intake or delivery pressures on the other side. The pump capacity is controlled by a device E comprising a membrane 21 supported by a perforated tube 22 and acted on by liquid pressure from the pump and variable gaseous pressure from source S, this latter pressure being proportional to engine output torque, as described in French Specification 1,350,753. On the pump delivery stroke liquid enters device E until pressures are equalized on opposite sides of membrane 21 and the remainder of the liquid is delivered to motor B through valve 4; on the suction the membrane 21 is moved to open a valve 23, 24 to connect source S to device E. 1,132,974. Hydrostatic transmissions. SOC. ANON. ANDRE CITROEN. 23 Nov., 1965 [25 Nov., 1964], No. 49652/65. Heading F2C. [Also in Division F1] The subject-matter of this Specification is identical with that in Specification 1,132,973, but the claims are directed mainly to details of the accumulator chambers by means of which the pump delivery pressure is rendered responsive to the gaseous pressure applied to said accumulators.
Patent GB-1282431-A (GB)
Title: Improvements in or relating to chimney supports
IPC: F23J13/00
Filed: 1969-10-09
Abstract: 1282431 Chimney support means WALLACE MURRAY CORP 9 Oct 1969 [5 June 1969] 49703/69 Heading F2P [Also in Division E2] A support for prefabricated chimney 12 comprises a mounting plate 18 pivoted to the integral upright portion 22 of an angle bracket 16 so that the base portion (20), Fig. 2 (not shown), of the angle bracket can be tilted to the same slope as the roof and secured thereto after the mounting plate has been secured to the chimney. In the one form the pivot is formed by a bolt (32), Fig. 6 (not shown) while a second bolt (50) engages an arcuate slot (28) in the upright portion 22. The mounnting plate has spaced apart parallel slots (38) Fig. 5 (not shown), to assist in the bending of the plate to the general curve of the chimney. The plate is initially secured to the chimney by a temporary strap (56) threaded through these slots and removed after screws (48) are driven through boles (46) into the chimney wall. Similar supports may be secured at opposite sides of the chimney.
Patent GB-1436564-A (GB)
Title: Apparatus including a photoelectric transducer arrangement
IPC: H01J43/02
Filed: 1973-10-25
Abstract: 1436564 Photo-electric transducer gain stabilization SIEMENS AG 25 Oct 1973 [25 Oct 1972] 49857/73 Heading G1A The gain of a photo-electric transducer arrangement responsive to an optical input is adjusted to a desired level by a servo-mechanism which compares the output produced in response to a calibration light source in the form of a beta-light with a reference signal. As shown, Fig. 1, a photo-multiplier is coupled to a scintillator crystal 3 by light guide system 2 and its output is connected via preamplifier 4 and main amplifier 5 to a signal processing device 6. A beta-light (45), which comprises a glass tube internally coated with a phosphor and containing a beta emitting gas such as tritium, is mounted in a box 7 coupled to the light guides 2 via a stop 8. When stop 8 is opened a signal is produced at the output of amplifier 5 and is separated from pulses due to other radiation input by a filter 9. This signal is compared with a reference voltage by a control amplifier to which adjusts the high voltage supply to the photo-multiplier to achieve the required system gain. Alternatively the control signal may vary the dynode voltage, the preamplifier gain or the main amplifier gain. A gamma camera Fig. 3 (not shown) comprises a scintillator coupled to two cascaded image intensifiers the output of the second being conducted by light guides to a plurality of photomultipliers each provided with a calibration servo loop. The beta-light injects the calibration light into a light guide arrangement coupling the two image intensifiers. The control loops are provided with individual reference signals which are selected to compensate for variations in calibration light intensity across the image area. The system may also use a single image intensifier. The reference signals may be programmed to compensate for the decay in intensity of the betalight with time. The system may operate in a continuous mode the light stop 8 being omitted. A chopper disc rotated by a motor or oscillated by a drive device may be used to modulate the calibration light, filters being used to select the pulses at the interruption frequency for application to a sample and hold circuit (54) which stores the peak value of each pulse to provide the signal input to the control amplifier Figs. 5 and 6 (not shown). The pulses may be arranged to be of substantially the same amplitude as the desired signal pulses. The amplifiers may be A.C. coupled and the system may be used for continuous or periodic calibration. The beta-light may be arranged to illuminate directly the photocathode of a suitably modified image intensifier Fig. 6 (not shown).