baber/WOPTO huggingface dataset:
Patent GB-1121119-A (GB)
Title: Improvements in nylon membrane filters
IPC: C08J9/28
Filed: 1965-12-13
Abstract: A microporous nylon plastic membrane filter is obtained by applying on to a smooth casting surface a composition comprising nylon, dissolved in either aqueous methanol or aqueous ethanol and a thickener so that the solution has a viscosity of 500-1000 cps. (Brookfield measured at a temperature of from 70 DEG  to 80 DEG  F.), selectively evaporating the organic solvent in an atmosphere of high relative humidity followed by evaporating the water and any residual volatile matter in an atmosphere of reduced humidity and removing the thickener from the membrane filter.  Chlorinated hydrocarbons such as methylene chloride, ethylene chloride, tetrachloroethane and chloroform may be used to aid in dissolving the nylon.  A suitable thickener is a carboxyvinyl polymer in the presence of a small amount of an amine such as di-isopropyl amine, triethylamine or triamylamine in solution in an alcohol.  The first evaporation step may be accomplished at a temperature in the region of 70 DEG  F. in a chamber, wherein the humidity is in the region of 100%, giving a porous sheet or film, while the second evaporation step may be achieved in a chamber maintained at a temperature in the region of 150 DEG  F.  The resulting plastic membrane sheet filter is washed, usually with dilute acid, at a temperature of from 120-140 DEG  F. to extract the thickener and the washed sheet dried at a low temperature.
Patent GB-1139967-A (GB)
Title: Fuel assembly for nuclear reactors
Inventor: GUMUCHIAN ANDRE
IPC: G21C3/33
Filed: 1967-11-21
Abstract: 1,139,967. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. 21 Nov., 1967 [5 Dec., 1966], No. 53003/67. Heading G6C. A fuel element assembly comprises a bundle of pins 10 mounted between end fittings 14, 16 within a hexagonal - section casing 12 through which the reactor coolant flows. The casing 12 is formed from a thin metallic strip wrapped in a helix around the pins 10 so as to be in contact therewith, adjacent turns of the helix being brazed or welded along joints 26 and the ends of the casing being similarly secured to the fittings 14, 16. In a modification (Fig. 2, not shown) the turns of the helix overlap and are secured by riveting.
Patent GB-1057570-A (GB)
Title: Improvements in or relating to sealing rings
Inventor: ROBINSON JAMES EUSTACE
IPC: F16J9/26
Filed: 1964-12-31
Abstract: 1,057,570. Piston rings. HEPWORTH & GRANDAGE Ltd. Dec. 10, 1965 [Dec..31, 1964], No. 53088/64. Heading F2T. The major area of the cylinder-engaging surface 2 of a piston ring 1 is formed by two circumferential bands 3 of hard wearing material which are axially separated by a land 4 composed of the basic material of the ring. The surface 2 may be cylindrical or bevelled at its edges or rounded as in Fig. 1. The bands 3 may be of chromium or molybdenum.
Patent GB-1097118-A (GB)
Title: Process for the isomerisation of ª-pinene to ª-pinene
IPC: C07C5/25
Filed: 1966-07-22
Abstract: a -Pinene is converted to b -pinene by forming a reaction product with an organo-metallic alkali metal compound, and subsequently treating said product with a protonating agent, e.g. NH3, NH4Cl, HCl, H2SO4, H3PO4 or H2O. Other protonating agents are mentioned.  The organometallic compound is preferably amyl sodium or amyl potassium, and the reaction of a -pinene therewith may be carried out at -50 DEG to +40 DEG  C. in a solvent, e.g. hexane, benzene or THF. Treatment of the product with the protonating agent is suitably carried out at - 60 DEG  C. to room temperature, and the resulting mixture treated with water and then ether extracted to recover the pinenes which are separated by distillation.
Patent GB-1397227-A (GB)
Title: Apparatus for removing rayon cake from centrifugal spinning pots
IPC: D01D7/00
Filed: 1973-11-19
Abstract: 1397227 Cake removal in centrifugal spinners ASAHI KASEI KOGYO KK 19 Nov 1973 [18 Nov 1972] 53549/73 Heading DID In a centrifugal spinning machine cakes 8 are removed from the spinning pot by a gripper 4 which is suspended on two laterally spaced elongate flexible members 1 and 2 driven independently by motors 14 and 24. The sequence of operation of motors 14 and 24 is controlled by a geared cam device, the cams cooperating with switching photocells. The gripper 4 is movable to transfer a cake from pot 5 to a cake table 6, which may comprise a conveyor to remove the cakes from the machine. The gripper 4 is a gripping pad or jaw device or an inflatable body. The gripper also carries jaws 133, Fig 12, to engage a pot lid, when activated by pneumatic cylinder 40, and lift the same clear of the pot. The lid 141 has a centrifugal spring clip 141a which engages the pot during rotation. Suitable pneumatic operating circuits are described and illustrated.
Patent GB-1119373-A (GB)
Title: Central lubricating device
IPC: F16N7/38
Filed: 1965-12-17
Abstract: 1,119,373. Lubricating. ELITEX, ZAVODY TEXTILINHO STROJIRENSTVI OBOROVE REDITELSTVI. 17 Dec., 1965 [21 Dec., 1964], No. 53741/65. Heading F2A. A lubricator comprises a vessel divided into parts 1a, 1b which contain the same or different oils and are connected to respective chambers 4a, 4b, a body 5 having fingers extending downwardly into chambers 4a, 4b, being periodically lifted and dropped in a given time interval to force oil from chambers 4a, 4b up vertical channels 6a, 6b to respective chambers 8, each of predetermined volume, which chambers have outlet ducts 30 to supply lubrication points. The body 5 has a pin 14 resting on a pin 13 which is secured across a bush 12 having ratchet-wheel 15. When the machine to be lubricated is running, ratchet wheel 15 is rotated, and rotation of pin 13 lifts and then suddenly drops the body 5. Channels 6a, 6b open into troughs 7 which are inclined so that excess oil drains via portions 10 back into parts 1a 1b Chambers 8 are formed by bores opening from troughs 7 and containing adjustable screws 9.
Patent GB-1181778-A (GB)
Title: Fire Resistant Coating Composition
IPC: C04B28/26
Filed: 1968-11-15
Abstract: 1,181,778. Fireproof coatings. NATIONAL AERONAUTICS & SPACE ADMINISTRATION. 15 Nov., 1968 [28 Nov., 1967], No. 54326/68. Heading B2K. [Also in Division C4] Aluminium surfaces e.g. inside space capsules are sprayed with a fireproof coating composition comprising aqueous potassium silicate having a SiO 2 :K 2 O ratio 4.8-5.3:1, wollastonite (fibrous calcium silicate), and ceric oxide and/or an alkyl trialkoxy silane (see Division C4-5). The composition may also contain talc, kaolinite, zinc dust, stainless steel flakes, oxides of Ti, Fe, Cu, Cr and Mn, cadmium sulphide and carbon black. Steel or plastic substances are also mentioned.
Patent GB-1447529-A (GB)
Title: Isolating circuits
IPC: G11C11/23
Filed: 1973-11-22
Abstract: 1447529 Amplifiers THOMSON-CSF 22 Nov 1973 [24 Nov 1972] 54338/73 Heading H3W In an arrangement in which an amplifier A, receives a low level signal from a storage tube, indicated by generator g with output capacity C 1 , which is supplied with a D.C. voltage or current liable to sudden fluctuations, isolation is provided by a transformer T. The transformer has balanced primary windings 1, 2 to the common point to which the D.C. supply is connected, the end 6 of winding 1 being connected to the device g and the end 7 of winding 2 to a balancing impedance Z. In the embodiment, the storage tube is supplied with a target supply of 5 volts for read-out and 200 volts for writing by means of D.C. sources u 1 , u 2 , switch K and amplifier A2 which is provided with feedback impedances Z 1 , Z 2  which limit the rate of rise and decay: the arrangement prevents switching surges reaching the amplifier A 1 . An earthed screen 4 is provided in transformer T.
Patent GB-1428227-A (GB)
Title: Welding fluxes
IPC: B23K35/36
Filed: 1973-11-23
Abstract: 1428227 Welding flux WACKER-CHEMIE GmbH 23 Nov 1973 [24 Nov 1972] 54432/73 Heading C7M A welding flux contains in per cent weight: 17-30SiO 2 , 18-35 Al 2 O 3 , 12-22TiO 2 , 10-22MnO, 4-16CaO, 2-10CaF 2 , O-5ZrO 2 , 0-5MgO, 0-5BaO, 0-2Cr 2 O 3 , 0-2Na 2 O, 0-2K 2 O with CaO+MgO+BaO 6-18, Na 2 O+K 2 O 0-2. Preferably the TiO 2 +ZrO 2  content does not exceed 22%. The flux can be formed by melting the constituents and water foaming the melt or granulating the solidified melt or by sintering and agglomerating the powder constituents. It can be used as sheaths or cores of electrodes.
Patent GB-1530380-A (GB)
Title: Bipolar polymeric membrane
IPC: B01D61/44
Filed: 1976-12-31
Abstract: 1530380 Bipolar polymeric membranes ALLIED CHEMICAL CORP 31 Dec 1976 [31 Dec 1975] 54445/76 Headings C3M and C3P Single film bipolar membranes comprising a polymer of CR 2  = CR 2  or CH 2  = CR-CR-CHR where R is H, F, Cl, C 1-5  alkyl or phenyl and having intimately dispersed therein at least 15% of a crosslinked polymer of CR 2 <SP>1</SP>=CHR<SP>1</SP> where R<SP>1</SP> is H, C 1-4  alkyl, phenyl C 2-4  alkyl, or phenyl, phenoxy, thiophenoxy or naphthyl or hydroxy, alkoxy- or halo-derivative thereof, at least one being aromatic and the polymer being crosslinked to a degree equivalent to that obtained by a 2-20% mixture of commercial 55% divinyl benzene in styrene, 50-98% of the membranes cross-section measured from one side having cation exchange groups bonded to the aromatic nuclei and the remaining nuclei being bonded to anion exchange groups, the concentrations of anionic and cationic functional groups being substantially equal and at least 1-4 meqs/g polymer, may be prepared by impregnating the film with aromatic monomer and optionally a crosslinking agent and polymerizing and crosslinking the monomer in the film and successively treating one side to introduce cation exchange groups and the other side to introduce anion exchange groups. The membrane may be of polyethylene, polypropylene, ethylene/propylene copolymer or polychlorotrifluoroethylene, impregnated with styrene/divinyl benzene, 2-chlorostyrene/divinyl toluene or 2-chlorostyrene/α,α<SP>1</SP>-dimethyl divinyl benzene, chlorosulphonated from one side and hydrolysed, and the remaining aromatic nuclei chloromethylated and quaternized with trimethylamine.
Patent GB-1516480-A (GB)
Title: Process for removing sulphate ions from extracted phosphoric acid
IPC: C01B25/237
Filed: 1976-12-31
Abstract: 1516480 Purifying wet process phosphoric acid TOYO SODA MFG CO Ltd 31 Dec 1976 [13 Feb 1976] 54481/76 Heading C1A Sulphate ions are removed from phosphoric acid solution produced by sulphuric acid decomposition of phosphate rock and which has been purified by extraction into an organic solvent of low water solubility followed by re-extraction from the organic solvent by water, by adding a barium compound to the phosphoric acid solution, adding active carbon to the resulting slurry and separating the solid components from the slurry. The quantity of barium compound added is preferably less than the stoichiometric equivalent of dissolved sulphate ions. Suitable barium compounds specified are Ba(OH) 2 , BaCO 3 , Ba 3 (PO 4 ) 2 , BaS, Ba(NO 3 ) 2  and BaCl 2 . Alternatively the solid components separated from the slurry may be calcines in an inert atmosphere to form a product having a major component of BaSwhich may be recycled for use as the barium compound.
Patent GB-1160690-A (GB)
Title: Pumping Apparatus
Inventor: BROWN CICERO COLUMBUS
IPC: F01L33/04
Filed: 1966-12-07
Abstract: 1,160,690. Reciprocating pumps and motors. C.C. BROWN. Dec.7, 1966 [June 27, 1966], No. 54881/66. Heading F1A. Two hydraulic motors 12, 12' driving pump assemblies, e.g. for mud for oil field use, are connected in series to a source of hydraulic pressure, hydraulic fluid from the source first actuating motor 12' and the exhaust from motor 12' actuating motor 12, a by-pass valve 70 adjusting the pressure drop across each motor in accordance with the respective loads on the motors. The motors are operated 90 degrees out of phase, and each comprises a piston 23 working in an actuating cylinder 22, and carrying pump cylinders 23c, 23d reciprocable on fixed pump pistons 24, 25 inlet and delivery ball valves 32 to 35 being provided. Actuating hydraulic fluid is supplied alternately to either side of pistons 23 under the control of valves 40, 46, 47 and 48. Valves 47 and 48 are actuated by a rod 50a mounted on piston assembly 23'. Valve 47 is reversed at the end of each stroke of piston 23' by rod 50a engaging tappets 52a, 52b, reversal of valve 47 reversing the supply and exhaust connections to either end of valve 46 to reverse valve 46 and reverse the stroke of piston 23'. Valve 48 is reversed at the middle of the stroke of piston 23' by the end of rod 50a engaging actuating member 50b of valve 48, reversal of valve 48 reversing valve 40 and hence the stroke of piston 23, which is therefore maintained 90 degrees out of phase relative to piston 23'. The exhaust from piston 23' passes through valves 46 and 40 to actuate piston 23, and is exhausted from piston 23 to exhaust line 20. By-pass valve 70 has differential piston surfaces at either end subjected to the actuating fluid inlet pressure from line 19, and to the exhaust pressure from piston 23' in line 60, the differential areas being in the ratio of the inlet and exhaust pressures of motor 12' for normal running, e.g. 2:1, the inlet pressure being reduced by half in motor 12', and from half to zero in motor 12. Valve 70 is spring-loaded to a central position in which communication is closed between ports 71a to c connected respectively to exhaust line 20, inlet line 19 and intermediate line 60. When the load on motor 12' increases, valve 70 connects line 60 to exhaust line 20 to increase the pressure drop across motor 12', and effectively by-pass motor 12. When the load on motor 12 increases, valve 70 connects line 60 to inlet line 19 to increase the pressure drop across motor 12, and effectively bypass motor 12'. In the embodiment of Fig. 8 (not shown), the pumps are connected in series.
Patent GB-1172690-A (GB)
Title: High Pressure Chambers.
Inventor: FUCHS FRANCIS JOSEPH JR
IPC: B30B11/00
Filed: 1966-12-08
Abstract: 1,172,690. Extruding. WESTERN ELECTRIC CO. Inc. 8 Dec., 1966 [9 Dec., 1965], No. 54985/66. Heading B3P. A high pressure chamber 11, particularly for use in hydrostatic extrusion, is formed by separate coaxial split bands of convolutions 16, 17 having interlocking ends which cause the radial pressure to be absorbed progressively from the outer to the inner convolutions. The convolutions are wound from bands with tapered ends, Fig. 3 (not shown), which are wound to form concentric rings 16, 17, 18, Fig. 2 (not shown). Alternatively, outer band 18 may be continuous. The convolutions have interengaging teeth (47), (48), Fig. 3, 4 (not shown), which are so arranged that the radial pressure is transmitted initially to the outer convolution 18. The bands together with an inner sleeve 13 are clamped by bolts 21 between end plates 19, 20; fluid seals 23, 36 are provided. The billet 10 is extruded through a die 12 mounted on a standard 32, by pressurization of fluid in chamber 11 using a ram 28. The extruded rod passes into chamber 37 also containing fluid pressurized by piston 38 in cylinder 39.
Patent GB-1407590-A (GB)
Title: Laying tubing in trenches to dewater ground
IPC: E02B11/02
Filed: 1971-11-26
Abstract: 1407590 Agricultural drainage HENRY SYKES Ltd 21 Nov 1972 [26 Nov 1971] 55101/71 Heading A1B [Also in Division E1] A trench-digging and pipe-laying machine comprises means for excavating spoil to form a trench, means for directing the spoil away from the trench, means for laying continuous flexible tubing 14 therein and means for backfilling the trench with material other than the spoil. The trench is dug by an endless chain cutter 11 and the spoil is deflected by a plate 13 and/or removed by a conveyor 20, and the trench back-filled with water-pervious material such as gravel or aggregate from a hopper 15 to promote a flow of ground water to the tubing, which has axail slits, which may be covered by a woven nylon sleeve to act as a filter, and is connected to a pump or to a lower-level outlet.
Patent GB-1282606-A (GB)
Title: Improvements in internal combustion engines
IPC: F01L1/46
Filed: 1969-11-13
Abstract: 1282606 Valve loading TECUMSEH PRODUCTS CO 13 Nov 1969 [14 Nov 1968] 55536/69 Heading F1B In an I, C. engine including bias means for urging an inlet or exhaust valve 14, 16, Fig. 1 closed and for biasing the valve train into tracking relation with a cam 18, 20 the bias means includes a spring having a pair of arms extending from an arcuate or coiled portion one of which arms 80 is urged against a reaction surface 30 in the engine and the other 76 is engaged in a notch in the valve stem 46, 56. In a modification the valve guides (100, 102), Fig. 7 (not shown) are continued into the casing (28) to locate the spring portion 80, In a further modification each valve is closed by a hairpin type spring which has a loop located on the valve guide extensions, In a further embodiment the spring portion (80<SP>1</SP>), Fig. 12 (not shown) is engaged under an integral ledge (200) and held in place by an extension on the casing cover.
Patent GB-1410068-A (GB)
Title: Bottle stopper
IPC: B65D47/12
Filed: 1972-12-01
Abstract: 1410068 Container closures ALLUMINIO MAUCERI BORGHETTO SpA 1 Dec 1972 [9 Dec 1971] 55674/72 Heading B8T A container stopper has a pouring spout 12 and cap 13 which can be screwed on. The spout has a drop-breaking element 14 connected to it by radial ribs 15 to form dispensing apertures 16. An annular flange 17 and integral yielding lip 18 on the base of the spout are for sealing it to the mouth of a container 11 by means of a locking strip 21. This strip also locks the lid 13 which has a weakened circumferential line 22 designed to break on opening.
Patent GB-1485369-A (GB)
Title: Apparatus for shaping sheet material
IPC: B31F1/26
Filed: 1973-12-05
Abstract: 1485369 Embossing COVRAD Ltd 4 Dec 1974 [5 Dec 1973] 56412/73 Heading B6J [Also in Division B3]  A pair of rotatable rollers 10 for shaping sheet material 20 into for example a radiator component include teeth 11 whose flanks 11b are provided with raised portions 12 for imparting a pattern on the sheet 20 and resilient means 22 for urging the sheet 20 away from the teeth 11 after a shaping operation. In one embodiment, each roller is formed from laminae some of which are provided with rubber inserts 22 located in the tooth flanks and others of which are provided with projecting louvre cutters 12 for forming parallel louvres in the flanks of the corrugated sheet 24 formed by the rollers 10. In another embodiment (Fig. 7, not shown) each tooth of some of the laminae is provided with channels (28, 29) leading to cavities (30) to enable the latter to be filled by injection moulding with rubber, latex or polyurethane foam. The resilient means may alternatively comprise a coating 16, Fig. 3, of rubber, latex or foam or laminae (15) (Fig. 5, not shown) formed of resilient material projecting beyond the remainder of the tooth flank surfaces. The laminae are held together by bolts and dowels (Figs. 5 and 6, not shown).
Patent GB-1372539-A (GB)
Title: Rollers
IPC: B29D7/01
Filed: 1971-12-06
Abstract: 1372539 Rollers CONSTRUCTIONS MECANIQUES PIERRE HANSSEN & CIE SA 6 Dec 1971 [16 Dec 1970] 56487/71 Heading F2U A roller (for removing folds from webs, e.g. of fibrous, metal and plastics materials) comprises a curved shaft 2 (shown straight) supporting end and intermediate ball bearings 11, 12, 26, 26a supporting a flexible tube 4 (e.g. of metal slit at 5, 6 ... 7) there being an oil-resistant fluid-tight sleeve 29, (e.g. of plastics) between the bearings and the tube, the ends 31 of the sleeve being clamped by bands 35 in grooves 33 with circumferentially extending ridges fixed to the bearings. The roller may be covered with another elastic sleeve similarly clamped, Fig. 2 (not shown). Oil may be supplied via a passage 54 which is  then plugged as at 55. Oil deflectors 38, 39 may be included.
Patent GB-1200183-A (GB)
Title: Article sorting apparatus
Inventor: JACK WILLIAM JUNIOR
IPC: B65G47/48
Filed: 1966-12-16
Abstract: 1,200,183. Endless conveyers. BAKER PERKINS JAXONS Ltd. 18 Dec., 1967 [16 Dec., 1966 (2)], Nos. 56432/66 and 56501/66. Heading B8A. Articles (e.g. laundry articles or articles of postal mail) are dumped from carriers 2 of an endless conveyer above a pre-selected one of a number of receptacles R1-R60. The carriers 2 each have a pair of hinged flaps 7, 8 release of the flap 7 permitting both flaps to drop down and dump an article into a receptacle R. The flap 7 may be retained by a member 12 of any one of a number of latches L1-L9, L10, L20, L30, L40, L50, L60 and LH, engaging in a channel 13 of the flap 7. The selected latches are set by setting fingers SF (there is one finger respective to each latch) by the suitable operation of a keyboard P. If for example, a load placed into a tray passing keyboard p, needs to be released into receptacle R25, keys 5 and 20 are pressed. This sets latches 5 and 20 with their respective members 12 in the channel 13. Every receptacle has a depending actuating finger which is so positioned as to engage and release the corresponding latch of any tray as it passes above the receptacle, provided the latch in question has been previously set by the corresponding operation of the keyboard P. The actuating fingers in respect of latches L1-L9 are arranged so that they rock the respective member 12 out of the channel 13 momentarily, thus allowing the flap 7 to drop if there is no member 12 of any of the latches L20, L30, L40, L50 or L60, in engagement with the channel 13. In the latter case the load will remain undumped until the carrier arrives over the designated two-digit coded receptacle. At the end of the circuit of the conveyer, any open flaps 7, 8, of the carriers 2, are lifted up into closing position by respective cams Cl, C2. The cam Cl retains the flaps closed while a mechanism HS sets the latch LH. This retains the flaps 7, 8 in closed position while the container passes the coding station and until it reaches the setting fingers SF. The receptacles R1-R60 are arranged in duplicate in a series of trays 4. Each tray thus presents an operational set of receptacles positioned beneath the conveyer run (Fig. 2, not shown) while previously deposited articles are being removed from the other set.
Patent GB-1404158-A (GB)
Title: Exhaust silencers for ic engines for example on motor cycles
IPC: F01N1/10
Filed: 1972-12-08
Abstract: 1404158 Exhaust silencers P W DUNSTALL 22 Nov 1973 [8 Dec 1972] 56700/72 Heading F1B An exhaust silencer for an I.C. engine especially of a motor cycle comprises an inner perforated tube 2 and an outer coaxial tube 1 having between them an annular space which, along at least part of its length accommodates a mass of fibrous material 8, the inner tube terminating at its outlet end in a frusto-conical enlargement located inside the outlet end of the outer tube and being defined by a perforated annular flange 5 and a perforated side wall 6 converging rearwardly to an outlet. Annular partition 3 and baffle 7 are also perforated. At the inlet to the silencer formed by a tapered tube 9 one or more reducing sleeves in the form of short longitudinally split tubes 17 compressed to fit into connecting tube 10 may be provided to  enable connection to be made to a narrower engine exhaust outlet.