baber/WOPTO huggingface dataset:
Patent GB-924245-A (GB)
Title: Sodium carbonate manufacture
Inventor: BLUMENTHAL ERNEST
IPC: C01D7/07
Filed: 1959-11-27
Abstract: Sodium carbonate monohydrate and anhydrous sodium carbonate are prepared by carbonating a caustic soda liquor containing less than 20% by weight of NaOH and more than 6% by weight of Na2CO3, but preferably less than 12% NaOH and more than 14% Na2CO3, at a temperature above 30 DEG C. with sufficient carbon-dioxide-containing gas to convert substantially all the NaOH to Na2CO3, and then reacting the carbonated liquor from the carbonation stage in a crystallisation stage with a caustic soda liquor containing at least 56% and less than 63% by weight of NaOH if sodium carbonate monohydrate is to be produced, and at least 63% by weight of NaOH if anhydrous sodium carbonate is to be produced, without the application of heat from any external source, and separating the precipitated product in each case.  The caustic soda liquor which is carbonated is a mother liquor from a preceding crystallisation stage.  Where anhydrous sodium carbonate is to be produced the liquor from the carbonation stage may be divided into portions, one of which is reacted in the crystallisation stage with a caustic soda liquor containing at least 63% by weight of NaOH whereby anhydrous Na2CO3 is precipitated and separated to give a first mother liquor and a magma, and said first mother liquor is thereafter mixed with the second portion of liquor from the carbonation stage whereby sodium carbonate monohydrate is precipitated and separated from a second mother liquor, which is recycled to said carbonation stage, said monohydrate being thereafter returned to said crystallisation stage or to the magma from that stage, whereby in either case it is converted by heat into anhydrous Na2CO3 which is precipitated and separated by suitable means.  The monohydrate may also be converted to anhydrous Na2CO3 in a separate vessel by reaction with concentrated caustic soda liquors. The crystallisation stages may be operated at a temperature between 8 DEG C. and 108 DEG C., preferred ranges being 50 DEG C. to 80 DEG C. in the straightforward processes, and 50 DEG C. to 100 DEG C. in the modification where the carbonated liquor is divided into two portions.  There may be one or more crystallisation vessels, some of which may operate at reduced pressure.  Scaling in the carbonation stage, which usually occurs in the upper part of the carbonator, may be prevented by having two carbonators in series and using each alternately as top or bottom of the system.
Patent GB-1326834-A (GB)
Title: Assembled bolt mechanism and a kit of parts for making a bolt  assembly for a window or door
IPC: E05C9/00
Filed: 1971-08-31
Abstract: 1326834 Bolt mechanism WILH FRANK GmbH 31 Aug 1971 [16 Sept 1970] 40506/71 Heading E2A A kit of parts for making a bolt mechanism comprises an operating bar 2 having a plurality of slots 7, a bolt 9 attachable to the bar so that a portion 11 protrudes through any desired slot and a cover plate 1 for the bar having a plurality of slots 5 corresponding in position to the slots of the operating bar and each of which is filled with an insert 13, any desired insert being removable to enable the portion 11 of the bolt to protrude through the slot the cover plate carrying an operating membrane 3 to which the bar is connectable. In the construction shown each insert is push fit in its slot and it is provided with a rim 14 which bear on the underside of the cover plate; the cover plate in addition to the slot 5 has screw holes 4. The bolt 9 has a base 10 from which the portion 11 projects and this is provided with cylindrical pins 12 which are engageable in holes 8 in the operating bar to secure the bolt to the bar. The bar is slidable by means of operating mechanism 3. In a modification instead of the inserts being a press fit they are made by filling the slots in the cover plate with molten plastics material which cools and solidifies. The portion 11 of the bolt can either engage a keeper directly or it can be provided with a cover member which engages the keeper. (For Figure see next page)
Patent GB-1157004-A (GB)
Title: A Dry Shaving Razor
Inventor: KOBLER KURT
IPC: B26B19/04
Filed: 1966-09-10
Abstract: 1,157,004. Dry shavers. KOBLER & CO. 10 Sept., 1966, No. 40511/66. Heading B4B. In a dry shaver having a pair of shearing heads 26, 27 each comprising an inner shear blade 31 oscillatable in an outer shear blade 28 open at both ends and secured to the shaver casing, the blades 31 being driven by spring-loaded coupling members 9, 10 from drive means, a spring-loaded decoupling member 19 which is movable against the action of springs 17, 18, the blades 31 being movable into a non-engaging position which permits each blade to be inserted and removed from the associated blade 28 without the latter being removed from the casing, each blade 31 has a cammed bottom edge to facilitate insertion and removal of the blade from either end of the blade 28 both when the drive means is in operation or is stopped. The blades 31 are each formed with a slot 39 for engagement with the coupling member 9 or 10. Each blade 31 has a U-shaped arcuate head portion 35 and a laminar plastics foot 36 having a bottom edge formed with cams 40, 41. The foot 36 extends into the head 35 to leave a channel for receiving the hair ends which are ejected from the ends of channels 45, 46. The members 9, 10 are slidably carried on pins 7, 8 fixed to a rocker 6 which is oscillatable about a shaft 5 by means of a motor shaft 2 having an eccentric pin 3 engaging a slot 4 in the rocker. An uncoupling member may be associated with each shearing head. The shearing heads may converge instead of being parallel.
Patent GB-1167640-A (GB)
Title: Brake for Linear Measuring Instrument
IPC: G01B3/10
Filed: 1967-09-06
Abstract: 1,167,640. Tape measures. QUENOT & CIE S.A.R.L. Sept.6, 1967 [Jan. 6, 1967], No.40687/67. Heading G1M. A tape measure comprises a tape 1 wound on a drum 2 in a casing or frame 3 and braking means including a resilient member 8 which engages the edge of the outer coils of the tape, the engagement being maintained by elastic deformation of the member on displacement of the outer coil by winding or unwinding the tape. The braking means has a central part 9 mounted on the drum shaft and a number of arms 8 made for example of acetal resin or nylon. The extremities of the arms are bent and formed with grooves 12 which engage cross-bars 13 of the frame to prevent rotation of the brake. In a modification, further arms are provided to act as a brake for the drum and sector shaped arms are described for use with a tape measure enclosed in a casing.
Patent GB-958385-A (GB)
Title: Circuit arrangements for preventing disturbances of voice frequency signals due to reflected signals
IPC: H04Q1/453
Filed: 1960-11-28
Abstract: 958,385. Voice-frequency signalling; automatic volume control. SIEMENS & HALSKE A.G. Nov. 28, 1960 [Nov. 27, 1959], No. 40876/60. Headings H4K and H4R. In a voice-frequency signalling system wherein signals are transmitted over a 4-wire circuit between two 2-wire circuits, an amplifier RV at the receive end has its gain controlled by the received signals so that the output to the receiver E is at the required level. In order to prevent false operation of the receiver E by signals reflected at the 4-wire-2-wire terminations it is arranged that the first signal received causes operation of relay X which disables the gain adjusting means of the amplifier for the duration of the train. The reflected signals being of lower level are thus unable to operate the receiver.
Patent GB-1055268-A (GB)
Title: Improvements in clamping brackets
Inventor: MARKS RALEIGH WILLIAM
IPC: F16B7/04
Filed: 1962-10-30
Abstract: 1,055,268. Clamps. NORTH WESTERN SPECIALITIES Ltd. Oct. 30, 1963 [Oct. 30, 1962], No. 40946/62. Heading E2B. A clamping bracket for connecting one rod to another comprises a first pair of plates 10, 11 adapted to grip one rod between them and a second pair of plates 13, 13 formed as a pair of jaws arranged and V-formation to grip the second rod between them, rear ends of the jaw plates passing through a slot or slots 12 in an adjacent one 11 of the first pair of plates 10, 11 and being connected together at each side and to the other 10 of the first pair of plates 10, 11 by nut and bolt means 16, 17, the tightening of which pulls the jaw plates 13 further through the slot on slots 12 causing them to close on to the second rod and to pull the first pair of plates 10, 11 towards one another to grip the first rod. As shown, all of the plates 10, 11 and 13 are serrated and the jaw plates 13 are provided with stepped cut-away portions 14a to permit an extension of the first rod to be clamped between the jaw plates and the adjacent plate 11.
Patent GB-1469604-A (GB)
Title: Roof support
IPC: E21D23/06
Filed: 1975-10-07
Abstract: 1469604 Auxiliary shield for a mine roof support RHEINSTAHL AG 7 Oct 1975 [31 Oct 1974] 41122/75 Heading E1P The angle between the roof bar and the goaf shield of a mine roof support is kept free of debris by a plurality of U-shaped members 12 which are pivoted on the roof bar pivot 3 and have progressively shorter limbs so as to extend over one another and by a downwardly extending member 4 fixed to the roof bar. The smallest U-shaped member 11 is fixed to the goaf shield, and abutment strips 9, 10 on the U-shaped members support the lower member of an adjacent pair. The edges of the U-shaped members are bevelled as shown to prevent jamming by debris.
Patent GB-1527865-A (GB)
Title: Phosphite based fungicide composition
IPC: A01N57/36
Filed: 1975-10-08
Abstract: 1527865 Phosphites (cyclic and acyclic) PHILAGRO 8 Oct 1975 [8 Oct 1974] 41202/75 Heading C2P [Also in Division A5] Several specific compounds are disclosed within the Formulae I and II wherein R 1  and R 5  are each H, Me or Pr; R 2  and R 6  are each H; R 3  and R 4  are each H, Me or Et; M is Na; and n is 1. Compounds I are prepared (i) by hydrolysis of the corresponding P-chloro compounds; or (ii) by transesterification of a dialkyl phosphite with a #-glycol. Compounds II are prepared (i) by saponification of compounds I; or (ii) by dealkylating the corresponding diesters using a sodium halide or hydroxide. Fungicidal compositions comprise a compound I or II and a carrier.
Patent GB-993554-A (GB)
Title: Spraying apparatus
Inventor: DORMAN ARTHUR KENNEDY
IPC: B05B15/658
Filed: 1960-12-01
Abstract: 993,554. Crop sprayers. DORMAN SPRAYER CO. Ltd. Dec. 1, 1961 [Dec. 1, 1960], No. 41328/60. Heading B2F. A spray boom structure for crop spraying comprises a rigid supporting member 1, Fig. 1, provided with an angle or recess in which is accommodated a table 2, and retaining members 3 to hold the tube and support together at least some of the retaining members incorporating a spray nozzle or nozzle housing which communicates with the tube interior through an aperture or apertures in the tube walls corresponding with the members 3. A screw 5 through the rear of member 1 urges the tube against arms 3a, a sealing gasket 6 being sandwiched therebetween. The support member may be of semicircular cross-section having flanges, Fig. 2 (not shown), or U-section. The tube may be of synthetic plastics or non- corrosive metal.
Patent GB-1235864-A (GB)
Title: Method for producing cement
IPC: C04B7/04
Filed: 1968-08-30
Abstract: 1,235,864. Making cement. KLOCKNERHUMBOLDT - DEUTZ A.G. 30 Aug., 1968 [1 Sept., 1967], No. 41596/68. Addition to 1,206,193. Heading C1H. [Also in Division F4] In producing cement from the gypsum sulphuric acid process in a rotary kiln preceded by a two stage preheater, through which waste kiln gases flow, raw material containing carbon is introduced into the first stage 2, some of the CaSO 4  (as gypscous stone, dihydric gypsum or waste gypsum) is supplied to the second stage 3, whilst the rest is predried or preburned and supplied to the first stage. Correction materials, if necessary, are supplied to stage 2. Each stage 2 and 3 has an associated heated mill 12 and 14. In the apparatus in Fig. 2 gypsum is processed in a gravity shaft preheated by supplying slurry to the first stage 23a from which some passes via 25, 26 and 5 to the second stage 3 of the kiln preheater, the remainder passing via 24, 23b, 27 and 4 to the first stage 2. Part 22 is the gravity shaft preheater furnace.
Patent GB-959974-A (GB)
Title: Fish bait or lure
IPC: A01K85/16
Filed: 1962-11-05
Abstract: 959,974. Fishing lines. J. C. D. MAUROY. Nov. 5, 1962 [Dec. 12, 1961], No. 41713/62. Heading A1A. A lure comprises a bulging forward portion 1 weighted at its lower part 2 and connected to a bulging weighted rear portion 5 by a thin intermediate portion 3 which is either flexible or incorporates a hinge. The forward weight has channels engaged by complementary parts of the forward portion 1 or it may be embedded in the material of the forward portion 1. The rear weight is formed from a U-shaped strip of metal having holes in which engage pins on the rear portion, or the rear weight is constituted by a plurality of studs pressed into the rear portion or a mass embedded in the rear portion. The intermediate portion may be integral with the forward and rear portions and the entire lure may be moulded from rubber or a thermoplastic resin. Alternatively the intermediate portion is formed by two rigid parts secured to the forward and rear portions and hinged together. The shank of a hook 4 extends through the forward portion 1. In another embodiment, (Fig. 4, not shown), the forward portion has a bore housing a catch for attaching the eye of the hook to the fishing line, the catch comprising a U-shaped loop having its free ends projecting through a hole in a disc in an enlarged part of the bore. The end of one free end engages the aperture in the disc and the other end is bent back to form a loop engaging the eye of the hook.
Patent GB-972742-A (GB)
Title: Apparatus for filtering and separating immiscible liquids
IPC: B01D17/02
Filed: 1962-11-05
Abstract: 972,742. Filtering liquids; gravity-separation apparatus. J. MULLER. Nov. 5, 1962 [Nov. 10, 1961], No. 41742/62. Heading B1D. A mixture of immiscible liquids containing solids is introduced under pressure at 10 past a manually-adjustable spring-loaded valve 11. Solids are detained and the mixed liquids are demulsified by stacked-disc edge filters 9, after which the liquids flow into "diffusers" 5, whence the heavier liquid passes downwards through holes 34 and the lighter liquid passes through peripheral slots (adjustable in vertical width) 35. The heavier liquid is relieved of residual traces of lighter liquid by passage through a felt, fibre or metal wool pad 6 on its way to an outlet 20. Lighter liquid is discharged past a valve 23 to an outlet 26, the valve being closed by a float 21 should the level of heavier liquid rise above AB. The action of the float may be adjusted (in accordance with the relative densities of the liquids) by an adjustable weight 27. A float-operated (29) gas-discharge valve 28 and gas outlet (30 or 31) also are provided.
Patent GB-1201874-A (GB)
Title: Apparatus for separating water from wet steam and subsequently superheating the steam
IPC: B01D45/08
Filed: 1968-09-03
Abstract: 1,201,874. Combined steam separators and superheaters. SULZER BROS. Ltd. 3 Sept., 1968 [6 Sept., 1967; 7 Sept., 1967], No. 41877/68. Heading F4A. A cylindrical tank 11 having steam separator elements 18 in its lower portion has a bank of superheater tubes 17 in its upper portion extending longitudinally of the tank between two walls 20, 23 which direct steam emerging from the separator elements. The two channels formed between the walls 20, 23 and the tank walls are connected to the lower portion of the tank through apertures 27 in plates 26 between the respective wall portions 23 and the tank wall. Wet steam exhausting from a turbine (1), Fig. 1 (not shown), supplied from a subterranean source, is fed to the tank 11 before passage to a low-pressure turbine (2). Each of the channels formed between the walls 20, 23 and the tank wall may be connected to the lower portion of the tank through a gap between the tank wall and the wall portion 23 which is continued to adjacent the tank walls.
Patent GB-913201-A (GB)
Title: Process for producing a platinum coloured fe-ag alloy
IPC: C22C5/00
Filed: 1958-12-29
Abstract: A platinum-coloured iron-silver alloy is formed by fusing in vacuo or an inert atmosphere a mixture of powdered silver and powdered iron, the iron having been formed by contacting impure iron with calcium in an inert gas atmosphere.  Fusion is effected at a temperature of at least 1300 DEG  C. and the mixture which may be compacted contains 20 to 35 parts of silver to 100 parts of iron. The fused alloy may be forged after cooling to below 700 DEG  C. Specification 913,198 is referred to.
Patent GB-1469515-A (GB)
Title: Chromeno-pyrazole compounds their manufacture and their use in thermo-reactive recording material
IPC: B41M5/145
Filed: 1973-09-06
Abstract: 1469515 Thermoreactive pyrazole compounds CIBA-GEIGY AG 13 Aug 1974 [6 Sept 1973] 41964/73 Heading C4P [Also in Division G2] The invention comprises compounds of formula wherein R 1  and R 2  are H, C 1-12  alkyl, C 2-8  alkoxyalkyl, C 5-6  cycloalkyl, benzyl or phenyl, Z is amino substituted by C 1-4  alkyl, C 2-4  alkenoyl or benzyl, Y is C 1-12  alkyl or alkoxy, C 2-12  acyl, benzyl, phenyl or substituted phenyl and benzene ring A may be substituted by 1-4 halogen atoms. The compounds may be prepared by reacting with a reactive ester of an alkyl or benzyl alcohol in the presence of an acid, e.g. phosphoric, sulphuric or acetic, or with a reactive functional derivative of a carboxylic acid. The compounds are used in thermographic materials (see Division G2). Specifically, chromeno pyrazole compounds of formula wherein R 3  and R 4  are ethyl, A 1  is an unsubstituted benzene ring, and Z is amino, diethylamino or dibenzylamino are prepared by reacting 21 - carboxy - 4 - diethylamino - 2 - hydroxybenzophenone with the sulphate salt of 1-(paminophenyl) - 3 - methyl - 5 - pyrazolone in sulphuric acid to give the compound wherein Z is amino. Reaction of this compound with ethyl bromide in the presence of sodium bicarbonate and dimethylsulphoxide gives the diethylamino compound whilst reaction with benzyl chloride gives the dibenzylamino compound.
Patent GB-1162536-A (GB)
Title: Hygroscopic Artificial Organic Polymeric Films of Uniform Thickness.
Inventor: GREER FRANCIS CHRISTOPHER
IPC: B29C48/92
Filed: 1966-09-22
Abstract: 1,162,536. Hygroscopic films. BRITISH SIDAC Ltd. 29 Aug., 1967 [22 Sept., 1966], No. 42389/66. Heading B5B. [Also in Division G1] A uniform film not more than threethousandths of an inch in thickness of hygroscopic artificial organic polymeric material is produced by subjecting the hygroscopic material to sensing means whereby longitudinal lanes of thicker or thinner-than-average material are located and then subjecting such lanes to treatment with a directed flow of fluid to cause thickening or thinning of such lanes as required. The material may comprise softened regenerated cellulose, substituted cellulose derivatives in which the degree of substitution does not exceed 0À20 or polyvinyl alcohol. The fluid treatment may comprise applying controlled jets of hot dry air, humid air, water vapour, finely atomized water or a continuous stream of cold water to the lines.
Patent GB-849156-A (GB)
Title: Improvements in or relating to the treatment of shaped structures of elastomeric polymers
IPC: D06M23/14
Filed: 1956-12-19
Abstract: The properties of shaped elastomeric structures of the polymers described in Specification 849,154 are improved by heating to a p temperature above 80 DEG C. but below the melting point of the polymer and cooling.  In the Examples : -(I) spun fibres of an elastomer made by reacting hydrazine hydrate with an isocyanate-modified poly(tetramethylene oxide) glycol are immersed in boiling water, (II) a solution in N,N1dimethyl formamide of a polymer made by reacting with hydrazine a diisocyanate-modified adipic acid/propylene glycol/ethylene glycol reaction product is cast as a film which is immersed in boiling water, (III) wet-spun fibres of the polymer described in Example II are immersed in boiling water, (IV) wet-spun fibres of a polymer made by reacting with hydrazine hydrate a diisocyanatemodified polyester derived from adipic acid and propylene glycol are immersed in boiling water, (V) dry-spun filaments of the polymer described in Example I are cold-drawn and heated in air or steam, (VI) melt-spun filaments of the polymer described in Example IV are drawn and heat treated in steam and (VII) wet-spun filaments of a polymer as in Example I are immersed in the relaxed state in boiling water, samples being then drawn and heated in steam.
Patent GB-960515-A (GB)
Title: Process for bending glass sheets
IPC: C03B23/031
Filed: 1962-05-28
Abstract: This Specification forms part of Specification 960,514, the claims relating to first moving one shaping member into contact with one major surface of the heat softened glass sheet so as to position the sheet in a predetermined manner and then moving the other shaping member into contact with the other surface of the glass sheet while it is thus supported.
Patent GB-1460099-A (GB)
Title: Met
IPC: B65D83/14
Filed: 1974-10-03
Abstract: 1460099 Testing valves before putting into service I I GRINBERG E K ZHUKOV and L N KOSHKIN 3 Oct 1974 42881/74 Heading F2V Apparatus for testing aerosol valves before putting into service comprises a seat 8 with a blind bore and a resilient member 10 disposed around its periphery into which the valve 1 to be checked is placed, means 38 for pressing the body 2 of the valve against the resilient member such that the latter is deformed and means 44 for moving to an open position the closure member 4 when the valve is in such a position such that the chamber defined by the bore and the body of the valve is reduced to atmospheric pressure, the means 38 and 44 being arranged such that the valve is then closed before the means 38 is removed and the resilient member, tending to return to its former position, creates a vacuum in the chamber. Thereafter any faulty valve would cause an erosion of the vacuum in the chamber. After a period, each valve is subject to a blast of air of sufficient strength to blow faulty valves from their seats but insufficient to overcome the vacuum in these chambers with associated non-faulty valves. Valves are deposited into a conveyor belt of seats and firstly rotate around a first rotor 11 where the means 38 and 44 have cupshaped ends and cylindrical ends with passageways 45 respectively and move on columns 31 driven by followers 37 moving in a groove of a rotating cam 30. After the vacuum has been created the valve with its seat moves away from the rotor 11 and eventually passes the blower 48 which displaces faulty valves. Non- faulty valves move on to a second rotor 12, similar to the first, which opens the valve to restore the chamber to atmospheric pressure and which also removes the valves from their seats and deposits them into a tray 49.