baber/WOPTO huggingface dataset:
Patent GB-1133526-A (GB)
Title: A process and means for filtration of yeast or other plant cellular material
IPC: B01D33/09
Filed: 1966-06-07
Abstract: 1,133,526. Rotary drum filter. SVENSKA JASTFABRIKS-A.B. 7 June, 1966 [8 June, 1965], No. 25211/66. Heading BID. An inward flow rotary drum filter comprises an application box 14 engaging the filter surface and used to apply yeast suspension for filtering, and optionally a filter aid such as starch or diatomaceous earth, the box floor comprising a knife 15 which scrapes solids from the drum. In Fig. 3, the drum 1 rotates anticlockwise, and initially filter aid suspension prepared in mixer (9, 10) (Figs. 1, 2, not shown) is pumped to box 14 while knife 15 is moved slowly outwards by hand or power to build up a smooth layer on the drum, excess being scraped off by kniife 15 and falling back into the mixer. When 20 to 30 mm of filter aid have been deposited, yeast suspension is delivered to box 14 while knife 15 moves inwards, scraping off a mixture of yeast and filter aid. When filter aid is not used, knife 15 is fixed A box (20) above box 14 delivers sprays of wash water on to the yeast. The drum comprises a draining net 3 below the filter medium and hollow spokes 2 deliver filtrate to the hollow shaft. The drum surface may be divided into annular sections on which separate vacuum pumps (5) operate, sections out of use being cut off by valves or plates (8) in the drum shaft. The location of boxes 14, (20) above the horizontal plane of symmetry of the drum ensures that liquid flowing down spokes 2 assists in forming the vacuum.
Patent GB-425316-A (GB)
Title: The manufacture of surgical ligatures and sutures
IPC: A61L17/06
Filed: 1933-09-12
Abstract: Surgical ligatures and sutures consist of wire made by drawing magnesium or its resorbable alloys in known manner to a diameter of about 0,3 m.m. and then drawing to a diameter of at most 0,2 m.m., particularly 0,04-0,1 m.m., with the application of heat, preferably with exclusion of air, at least after each diameter decrease of 20 per cent.  The diameter decrease in each draw stage is preferably substantially less than 20 per cent. The heating may be effected in an oil bath or in vacuo.  The wires may be twisted to strands and the strands to ropes in any customary manner.  The alloys preferably contain at least 75 per cent by weight of magnesium, the most important alloying metal being aluminium, which may be present in amounts of 10-15 per cent, but preferably not more than 6,5 per cent. Iron and base non-ferrous metals may be used which are non-poisonous, unlike lead, silver, barium or arsenic.  Suitable metals are silicon, manganese, zinc, cadmium, copper, nickel, cobalt, tin, antimony, bismuth, lithium, sodium, potassium, rubidium, caesium, strontium, titanium, beryllium, or mixtures thereof. Specification 319,886, [Class 81 (ii)], is referred to.ALSO:Surgical ligatures and sutures consist of wire made by drawing magnesium or its resorbable alloys. The alloys preferably contain at least 75 per cent by weight of magnesium, the most important alloying metal being aluminium, which may be present in amounts of 10-15 per cent but preferably not more than 6,5 per cent.  Iron and base non-ferrous metals may be used which are non-poisonous, unlike lead, silver, barium or arsenic. Suitable elements are silicon, manganese, zinc, cadmium, copper, nickel, cobalt, tin, antimony, bismuth, lithium, sodium, potassium, rubidium, caesium, strontium, titanium, beryllium, or mixtures thereof.
Patent GB-377833-A (GB)
Title: Improvements in loud speaker movements
IPC: H04R11/00
Filed: 1931-09-09
Abstract: 377,833. Loud-speakers. BURTON, C. F., Progress Works, Bernard Street, Walsall. Sept. 9, 1931, No. 25281. [Class 40 (iv).] Relates to loudspeaker movements of the vibrating reed type, in which a substantially rectangular magnetic circuit is provided, a permanent magnet forming the base, one side being formed as the electromagnet and core, and the armature forming a third side opposite the base. According to the invention, the armature is bent to form two parts at rightangles to one another, one of these parts being directly attached to the magnet base and forming the fourth side of the'magnetic circuit. In the construction shown, the armature 2 is an L-shaped sheet metal pressing, having the short limb 6, Fig. 5, tapering in width and secured by a flange 7 to the magnetic baseplate 1. The magnet core is made of two L-shaped pressed plates 8, placed back to back as shown in Fig. 4, the plates being locked together by a slotted plate 11 fitted thereon. The longer edges of the ends 8<1> of the'core plates lie parallel to the length of the limb 5 of the armature. Adjustment of the armature is made in known manner by means of a screw 14 acting on a spring 13.
Patent GB-616073-A (GB)
Title: Improvements in and relating to vinylfluorenes and methods of preparing the same
IPC: C07C1/24
Filed: 1946-08-26
Abstract: Monovinylfluorene is prepared by dehydrating mono-fluorenyl-methylcarbinol.  2-Vinylfluorene may be prepared by dehydrating 2-fluorenyl-methylcarbinol by contact with activated alumina alone or with other metallic oxides such as the oxides of chromium, tungsten, molybdenum or manganese, but preferably by passing the vapours of 2-fluorenylmethylcarbinol over activated alumina or other vapour-phase dehydration catalyst, e.g. acid potassium sulphate, in a system under reduced pressure. 2-Fluorenyl-methylcarbinol may be prepared by reducing 2-acetylfluorene, e.g. by hydrogenating in the presence of a hydrogenation catalyst such as finely-divided platinum, platinum oxide, palladium or copper chromite, at atmospheric or higher pressures.  2-Acetyl-fluorene is prepared by acetylating fluorene with an acetylating agent such as acetic acid or anhydride, acetyl chloride or bromide in the presence of a Friedel Craft catalyst such as aluminium chloride or bromide, ferric chloride, zinc chloride, boron fluoride, hydrogen fluoride or sulphuric acid. 3- and 4-acetylfluorene, the corresponding carbinols and vinyl-substituted fluorenes may be prepared by the methods outlined above.  In examples, the preparation of 2-acetylfluorene, 2-fluorenylmethylcarbinol and 2-vinyl-fluorene is described.  The Specification as open to inspection under Sect. 91 states that mono-vinylfluorene may be prepared by the catalytic dehydrogenation of a monoethylfluorene, e.g. 2-ethylfluorene, which may be prepared by the direct ethylation of fluorene or by the reduction of a mono-acetylfluorene beyond the carbinol stage. 2-Vinylfluorene may also be prepared by treating 2-fluorenyl-methylcarbinol with thionyl chloride to yield 2-(a -chloroethyl)-fluorene which is then treated with an alkaline substance, e.g. pyridine or an alcoholic solution of an alkali metal hydroxide.  Polyacetylfluorenes, particularly diacetylfluorenes, may be obtained by acetylating a mono-acetylfluorene, e.g. 2 : 7-diacetylfluorene may be prepared by acetylating 2 - acetylfluorene.  2 : 7 - Divinylfluorene and other polyvinylfluorenes may be produced from the corresponding polyacetylfluorenes by the methods given above.  Ketene may also be used as an acetylating agent.  This subject-matter does not appear in the Specification as accepted.
Patent GB-801501-A (GB)
Title: Improvements in or relating to variable displacement rotary pumps
IPC: F04C14/22
Filed: 1956-08-20
Abstract: 801,501. Rotary pumps. HOUDAILLE INDUSTRIES, Inc. Aug. 20, 1956 [Aug. 30, 1955], No. 26400/56. Class 110 (2). In a variable capacity pump wherein the regulating member 18 is initially urged into a position of maximum eccentricity relative to the rotor 11 by a spring 33, the member 18 is automatically adjusted to maintain a predetermined output pressure by a control valve assembly 37. The assembly 37 includes three plungers 38, 46, 48, the plunger 38 being urged downwardly against the action of a spring 44 by pressure fluid admitted at 42. The pressure fluid is fed through ports 66, 64, 62 and passages in the cover-plate (see Fig. 3 (not shown), to a chamber 21a in order to augment the force of the spring 33. As the pressure increases and the plunger 38 moves downwardly the port 62 is cut off and the pressure fluid is fed through a port 72 to a chamber 21b thereby acting in opposition to the spring 33, the oil in the chamber 21a being vented through ports 62, 76, 78. During upward movement of the plunger 38 the chamber 21b is vented through the port 72 and a port 80. The bias of the spring may be augmented to give different selected mean output pressures by bringing ports 90, 92 beneath plungers 46, 48 respectively into communication with a source of high pressure through means such as the shift selector lever of a vehicle. Bleed passages 82, 84 respectively connect the chambers 21a, 21b with the high- and low-pressure sides of the pump. Reference has been directed by the Comptroller to Specifications 653,047 and 675,840.
Patent GB-1011750-A (GB)
Title: Improvements in or relating to an escape system
Inventor: REFFELL BRIAN RICHARD ARNOLD
IPC: B63C9/19
Filed: 1962-07-03
Abstract: 1,011,750. Aircraft escape systems; inflating life-jackets. WALTER KIDDE CO. Ltd. June 27, 1963 [July 3, 1962], No. 25408/62. Headings B7G and B7U. An escape system for separating an occupant from an aircraft ejector seat and for automatically inflating a life-jacket worn by such occupant on separation from the seat comprises a first actuator 2 (Fig. 1) for releasing gas from a first vessel 1 to inflate bladders 6, 7 secured to the seat and interposed between the occupant and the seat, and to operate means 11 for operating a second actuator 14 for releasing gas from a second vessel 15 to inflate a life-jacket 16, the means 11 being secured to the ejection seat and comprising a piston in a cylinder (Fig. 3, not shown), the piston being connected by a flexible connecting means 12, such as a cable 54 in a flexible conduit 53 with a locking member 77 (Fig. 4), in the second actuator 14, the withdrawal of said member from its locking position causing the second actuator to be operated. The cable 54 has a ball 82 fixed to it, which may be engaged by a disc 81 secured to a slidable knob 80 for manually-operating the second actuator. As the slug 77 is withdrawn from its locking position a striker-pin 73 is released to rupture the seal of a gas-storage vessel 15. The cable 54, which includes a lostmotion device, is withdrawn from the actuator and the outer cable 53 pulls away either from the operating means 11 or the actuator being held in each of these by a connector, such as a bevelled circlip engaging a groove, which releases above a predetermined load. The actuator 2 for inflating the bladders 6, 7 is of similar construction to the actuator 14, but is not manually operable by a knob such as 80. Its operating cable is withdrawn by operating means 3 which are barometrically or manuallyoperated. The storage vessel 1 inflates bladders 6, 7 for ejecting the occupant from his seat, through restrictions 5 such that they inflate at substantially the same rate.
Patent GB-640888-A (GB)
Title: Improvements in electric lamp connectors
IPC: H01R33/02
Filed: 1948-09-30
Abstract: 640,888. Lamp-caps. PATTISON, G. R. B., DUCE, G. W., DANBY, F. D., and MACLAREN, H. D. Sept. 30, 1948, No. 25469. [Class 38 (i)] An end-connector for a double-ended, compact-source lamp which requires focusing in its mounting, comprises a socket member a having a spaced junction piece f supported on stifflyflexible leads b secured to the socket member, and a spigot h which passes through the junction piece to engage the socket a<SP>1</SP> whereupon the spigot is clamped to the junction piece. The spigot has a conical end and the junction piece f is annular with a forked tongue f<SP>1</SP> mounted diametrally thereon, the spigot being slotted to allow the limbs of the tongue to enter therein when the spigot is clamped in position by the screw i. Either the spigot or the socket member may be mounted on the lamp.
Patent GB-490722-A (GB)
Title: Improvements in and relating to spectacle frames
IPC: G02C1/06
Filed: 1937-09-20
Abstract: 490,722. Spectacles. GAMMERT, G. R. H. P. Sept. 20, 1937, No. 25517. [Class 97 (i)] In spectacle frames comprising metal rims 1 provided with non - metallic linings 5, the linings are made in the form of endless rings. The metal rims are formed with lugs 3 for attaching the temples.
Patent GB-707174-A (GB)
Title: Improvements in or relating to tubulous vapour generating and superheating units
IPC: F22G5/02
Filed: 1951-11-01
Abstract: 707,174. Water-tube steam boiler; superheating and reheating. BABCOCK & WILCOX, Ltd. Nov. 1, 1951 [Nov. 3, 1950], No. 25548/51. Classes 123(2) and 123(3) A steam &c. boiler comprises vertically extending furnace chambers 160, 162 which are disposed side by side, are lined with steam-generating tubes, and are separately fired by pulverized fuel burners. 190, 192 and 212, 214 respectively. A lower gas pass 184 locating, say, a steam reheater 166 leads from the top of the furnace 162 to an intermediate zone 28 of the furnace 160, and an upper pass 186 locating a superheater 164 directs the mixed gases from both furnaces through an economizer 240 and air heater 250 to an exhaust flue or stack. The fuel supply from a pulverizer 196 to the burners 190, 192 may be regulated, through an operator 204, by control means 210 responsive to the pressure of steam in the superheated steam outlet pipe 197; the supply to the burners 212, 214 is similarly regulated, through an operator 230, by the control 210 together with, if desired, a control 320 responsive to the temperature of the steam in the reheater outlet pipe 228. Flue gases from a position downstream of the superheater, e.g. between the economizer 240 and air heater 250, may be directed by ducts 274, 276 and a fan 272 for recirculation through one or both of the furnaces 160, 162. In one construction the gases are recirculated only through the furnace 160, being led to the secondary air ducts of the burners thereof through an opening 282 and the flow being regulated by a damper 284 subjected to a control 307 responsive to the temperature in the steam pipe 197. In a modification, as shown, the damper 284 is regulated, through a relay 410, by the control 307 and, in addition, a second control 405 responsive to steam flow in the pipe 197; gases are also recirculated through the furnace 162, by way of a branch 280 of the duct 276, a damper 294 in said branch being regulated, through a relay 402, by the reheat temperature and superheated steam flow controls 320, 405 respectively. The superheater and reheater are both in two sections 30, 32 and 60, 62 with tubes of the superheater section 32 forming a screen across the outlet from the reheater pass 184.
Patent GB-727503-A (GB)
Title: Improvements in or relating to tiles
IPC: E04F13/14
Filed: 1952-10-13
Abstract: 727,503. Facing tiles. BLAKEY, J. B. Oct. 13, 1953 [Oct. 13, 1952], No. 25553/52. Class 87 (1). A tile 3 is formed with a groove 7 in at least one edge face and with a bevelled or cut-away portion 5 along at least one other edge of its rear face. The lower flange 9 of the groove 7 is longer than the upper flange 11 and fits against an edge face 13 of an adjacent tile; the face 5 serves to press backing cement 1 into an adjacent groove 7.
Patent GB-650229-A (GB)
Title: An improved combination rolling pin for domestic use
IPC: A47J47/04
Filed: 1948-10-01
Abstract: 650,229. Rolling-pins. ANTHONY, A. S., and GARRETT, J. A. Oct. 1, 1948, No. 25573. Convention date, Nov. 6, 1947. [Class 28(i)] A hollow rolling pin 2 has threaded handle sections 6 and 10 which may be removed to provide further kitchen utensils. The end section 6 may comprise a scone cutter or funnel, or its hollow, open ended handle may provide a holder for a paste brush. End section 10 has perforations 14, and provides a flour sifter, or a scoop. Instead of perforations 14 in the end section 10 a removable perforated cup may be threaded into the end section 6 to provide a flour sifter or shaker. Specification 212,392, [Class 28(i)], and U.S.A. Specification 2,071,422 are referred to.
Patent GB-1190282-A (GB)
Title: Fluid Distributor
IPC: B05B1/14
Filed: 1967-06-02
Abstract: 1,190,282. Chemical contact apparatus; spray producers. ESSO RESEARCH & ENG. CO. 2 June, 1967 [28 Oct., 1966], No. 25584/67. Headings B1F and B2F. In a downward flow gas/solid or liquid/ solid contact apparatus, Fig. 1, 16 is a screen, 18 an inert layer, 20 a bed of quartz chips, or pellets or spheres of sorptive catalyst such as silica gel, activated charcoal and molecular sieves, and 22 a layer of inert ceramic spheres which acts as a diffusor for fluid from, distributor 24 and prevent disturbance of the upper surface of bed 20. The flow distributor comprises a perforated dish shape baffle 30 (Figs. 2 and 3) of which the outside diameter of the lower peripheral edge is greater than the diameter of the central aperture in conical baffle 38, annular baffle 36 and radial vanes 28 and 40.
Patent GB-756679-A (GB)
Title: Catalyst recovery process
Inventor: JEFFERS FRANCIS GEORGE
IPC: B01J27/28
Filed: 1953-09-16
Abstract: In the manufacture of adipic acid by nitric acid oxidation of cyclohexanol and/or cyclo-hexanone in the presence of vanadium or copper catalysts either as such or in the form of their oxides or salts (see Specification 572,260), the catalysts are recovered from the waste liquors obtained after isolation of the adipic acid by filtration, by adding to the waste liquors sulphoric or phosphoric acid in amount slightly more than equivalent to the nitrate salt present, evaporating the liquor to dryness thereby removing nitric acid and isolating the catalysts and by-products from the residue. The evaporation is preferably conducted under reduced pressure at temperatures up to 150 DEG  C. whilst preventing vigorous reaction by blowing steam in at 100 DEG  to 170 DEG  C. or by the addition of free or partially concentrated waste liquors at a lower temperature. Air may be blown through the hot molten residue to remove traces of nitric acid.  The organic acid contained in the residue, largely glutaric acid with some adipic and succinic acid may be esterified and the individual acids may be isolated by fractionation of the esters and subsequent hydrolysis, or by dissolution of the residue in an organic solvent such as ethylene dichloride or benzene, or by distillation, or by simple filtration of the molten residue whereby the sulphates of the catalyst metals are removed from the filtrate.ALSO:In the manufacture of adipic acid by nitric acid oxidation of cyclohexanol and/or cyclohexanone in the presence of vanadium or copper catalysts either as such or in the form of their oxides or salts (see Specification 572,260, [Group IV]) the catalysts are recovered from the waste liquors obtained after isolation of the adipic acid by filtration, by adding to the waste liquors sulphuric or phosphoric acid in amount slightly more than equivalent to the nitrate salts present, evaporating the liquor to dryness thereby removing nitric acid and isolating the catalysts and byproducts from the residue.  The evaporation is preferably conducted under reduced pressure at temperatures up to 150 DEG C. whilst preventing vigorous reaction by blowing steam in at 100 to 170 DEG C. or by the addition of free or partially concentrated waste liquors at a lower temperature.  Air may be blown through the hot molten residue to remove traces of nitric acid.  The organic acid contained in the residue, largely glutaric acid with some adipic and succinic acid may be recovered by esterification with an alcohol, or by dissolution in an organic solvent such as ethylene dichloride or benzene, or by distillation, or by simple filtration of the molten residue whereby the sulphates of the catalyst metals are removed from the filtrate.
Patent GB-806032-A (GB)
Title: A process for the production of a hot cathode for thermionic tubes
IPC: H01J9/04
Filed: 1955-09-08
Abstract: 806,032. Cathode materials and processing. PATELHOLD PATENTVERWERTUNGS- & ELECTRO-HOLDING A.G. Sept. 8, 1955 [Sept. 8, 1954], No. 25744/55. Class 39(1). A thermionic cathode comprising an alkaline earth metal compound on a metal carrier is processed by being heated, a portion at a time, to at least 3500‹C. The carrier may be nickel, and the compound a mixture of the usual oxides, e.g. 40-100 per cent. barium oxide, 0-60 per cent. strontium oxide, and 0-15 per cent calcium oxide. The process may be carried out by making the cathode one electrode of an electric arc, preferably struck in a low-pressure atmosphere of inert gas. The focal spot of the arc jumps about from point to point over the cathode surface, heating each point momentarily to the required temperature. The finished cathode operates at 800‹C. It is substantially free of oxide, and may therefore be stored in air without contamination.
Patent GB-898264-A (GB)
Title: Process for vulcanising saturated olefin copolymers
IPC: C08K3/34
Filed: 1960-07-25
Abstract: A mix comprising an amorphous saturated copolymer of ethylene with an alpha-olefin (e.g. propylene or a butene), an acid filler, sulphur, and a peroxide of the formula <FORM:0898264/IV (a)/1> in which R1, R2, R3, R4, R5, and R6 are alkyl groups which may be completely or partially substituted with halogen atoms, is vulcanized by heating in a press at a temperature of from 110 DEG C. to 220 DEG C.  By acid filler is meant a material capable of lending strength and work-ability to a polymer to which it is added and which imparts a pH lower than 7 to neutral water when suspended in it.  Acid fillers mentioned are clays, carbon black, and silica.  The mix may also contain 0,1 to 20% (based on the filler) of an oxide, a hydroxide, a basic salt, or a salt of a weak acid with a metal of Group I, II, III, or VIII, of the Periodic Table, e.g. MgO, PbO, ZnO, Fe2O3, or CaO, alone, or in the presence of basic organic substances such as diphenyl guanidine, hexamethylene diamine, pyridine, triethanolamine, or a condensate of ammonia with formaldehyde and ethyl chloride. Examplified peroxides are tetrachloro-tert. butyl peroxide, and tert. butyl peroxide.  The vulcanization is generally effected on homogeneous mixes in the form of sheets.  Specifications 856,733, 856,736, 856,737 and 898,261 are referred to.
Patent GB-188865-A (GB)
Title: An improved method of extracting metals from ores with nitric acid
IPC: C22B3/06
Filed: 1921-09-29
Abstract: Ores are treated with nitric acid of at least 40 per cent in the presence of iron or acid-soluble iron compounds equivalent to the metals other than iron in the ore, the iron nitrate produced being the effective attacking agent.  After the separation of the iron hydrate, the nitrate solution may be treated with sulphuric acid to precipitate the lead and then by cementation to obtain first the silver and then the copper; or the solution after the removal of the lead and silver may be treated with sulphuric acid to obtain crystallizable sulphates which, owing to their water of crystallization, leave the liberated nitric acid in a concentrated state.  Alternatively, instead of cementation as above described, the metals may be obtained by fractional electrolysis.