baber/WOPTO huggingface dataset:
Patent GB-874107-A (GB)
Title: Improvements in rock drills
Inventor: MORGAN FREDERIC FRANCIS LLEWEL
IPC: E21B10/58
Filed: 1957-12-24
Abstract: 874,107. Percussive tools. CLIMAX ROCK DRILL & ENGINEERING Ltd. Dec. 24, 1958 [Dec. 24, 1957], No. 40079/57. Class 124. A fluid operated percussive rock drill comprises three or more hammer cylinders disposed in a group to drill a single hole and having a connection for one or more tubes connected end-to-end, by which they may be rotated and supplied with operating fluid. As shown, three pneumatic percussive drills may be held together by clamps 34, 36 at their front ends and rigidly connected at their rear ends to a manifold 20 which, in turn, is connected to the final tube 18 of a series of similar tubes. Compressed air may be supplied through the tubes 18 to the manifold and then to each of the drill cylinders, a part of the air being bled off and directed through passages 30 to the working face. Exhaust air is directed through openings 32 in the walls of the drills. The hammer cylinders may be enclosed in a single housing. The tubes 18 may be connected to a rotary drive so that tubes and drills are rotated.
Patent GB-1065957-A (GB)
Title: Production of substituted silanes
Inventor: LOVIE JOHN CORMACK
IPC: C07F7/08
Filed: 1964-10-02
Abstract: Silicon tetrachloride is obtained as a product in the exothermic reaction of methylaluminium-sesquichloride on a 70/30 mixture of dimethyl-tetrachlorodisilane and trimethyltrichlorodisilane. In Example 2 the SiCl4 is 67% of the distilled-off reaction mixture.ALSO:Substituted monosilanes are produced by reacting one or more disilanes of the formula RnSi2X6- n, where R is C1- 4 alkyl, X is halogen, and n is 0 or an integer up to 6, with at least one organo-aluminium halide of the formula R1mAlX13- m, where R1 is C1- 4 alkyl, X1 is halogen, and m is 1, 2 or 3; there being present in the reaction mixture at least one R1 group for each Si atom.  The disilane used is preferably a high-boiling residue from the reaction of Si and an alkyl halide.  R and R1 are suitably Me; X and X1 are Cl. Up to 4 R1 groups/Si atom may be present.  The reaction is exothermic, and cooling may be necessary to keep within the preferred 20-200 DEG  C. range.  A solvent, e.g. benzene, toluene or methylcyclohexane, may be present.  The products are recovered by distillation, solvent extraction or layer separation.  A number of disilanes and siloxanes are specified as by-products in the reaction.
Patent GB-1404655-A (GB)
Title: Electric cable connector
IPC: H01R4/36
Filed: 1972-08-30
Abstract: 1404655 Electric couplings J R PERTUIT 30 Aug 1972 40153/72 Heading H2E A transverse slot 28 in an electrically conductive body 27 receives the tongue 25 of a lug 24 terminating an insulated cable 21, and the domed end 32 of set screw 31, entering hole 26 in the tongue, retains and clamps lug 25 to body 27. An insulating sleeve 34 fitted over body 27, and retained by the head of screw 35, has access holes 38 through which a tool may be inserted for engaging in screw 31. The transverse cross-sectional shape of body 27 may be circular, hexagonal or square. Cable 21 may be of a type used for electric welding.
Patent GB-1468584-A (GB)
Title: Flow control apparatus in gas turbine engine compressors
IPC: F04D27/02
Filed: 1974-09-16
Abstract: 1468584 Axial-flow compressors AVCO CORP 16 Sept 1974 [19 Nov 1973] 40317/74 Heading F1C The inlet housing 18, Fig. 2, of a compressor (26), Fig. 1 (not shown), for a gas turbine engine is fitted with flow control apparatus for preventing surge. The apparatus includes at least one split ring 56 located in a circumferential recess 58 in the housing. The free ends 64, 66 are movable relatively to one another to adjust the internal diameter of the ring to thereby vary the flow through the compressor inlet, particularly in the region of the compressor blade tips. The ring is maintained substantially coaxial with the flow passage in the housing by guide slots 78, 80 cooperating with the ends of actuating rods 84, 86 and by a pin 63 co-operating with tabs 67. The rods 84, 86 are moved to adjust the ring by rotation of a cylindrical element 96, the latter being rotated via a radial actuating rod (108) and surge sensing means. The thickness W of the ring tapers from its mid portion to its free ends. In Fig. 2, a further split ring is located behind the ring 56 with its free ends circumferentially offset to seal the gap between the free ends 64, 66. In an alternative embodiment, Figs. 4 and 5 (not shown), the free ends of the split ring circumferentially overlap and are movable relatively by a pair of pivoted arms (152, 162) inter-connected by sector gears (154, 158).
Patent GB-1398103-A (GB)
Title: Cyclopropane derivatives and their use as pesticides
IPC: C07D263/32
Filed: 1972-08-31
Abstract: 1398103 Cyclopropane carboxylate derivatives SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 31 Aug 1972 40431/72 Heading C2C Novel cyclopropane carboxylate derivatives have the general formula wherein A is an optionally alkyl-substituted oxazole or isoxazole ring or an oxadiazole ring; Z is a benzyl group optionally substituted by a halogen atom or by an alkyl group; R is an alkyl group; R 1  and R 2  are halogen atoms or alkyl groups, or when A is other than an oxazole ring, R 1  is hydrogen and R 2  is an alkenyl group, and are prepared by reacting a compound of the formula with a compound of the formula (III) wherein one of the groups X and Y is halogen and the other is a hydroxy group. The reaction is preferably carried out in the presence of a hydrogen halide acceptor. The novel compounds possess pesticidal properties.
Patent GB-970277-A (GB)
Title: Method and apparatus for inserting picks of filling in a fabric
IPC: D03J5/00
Filed: 1961-11-14
Abstract: 970, 277. Shuttleless loom weft inserters. DRAPER CORPORATION. Nov. 14,1961 [March 28,1961], No. 40650/61. Heading D1E. In a loom in which a loop of weft is taken half way through the shed by one weft inserter, then transferred to a second weft inserter which straightens out the loop into a single pick, the tendency of the weft to untwist during this part of the operation is counteracted by grooving the surfaces between which it slides. The loop of weft is received by a hook 24 on the second weft inserter and runs along a grooved surface 21, against which it is pressed by a tensioning member 25 (shown broken away); the grooves in the member 25 are disposed at the opposite angle to the grooves 21, so that the two sides of the weft are urged in opposite directions, thereby tending to rotate it about its axis. The tensioning member 25 is mounted on a rocker 26 so that its pressure on the weft can be adjusted by slackening one securing screw and tightening the other. U.S.A. Specifications 1,515,102, 1,883,354, 2,191,376 and 2,604,123 are referred to.
Patent GB-1169254-A (GB)
Title: Reactive Dyestuffs
Inventor: BIEN HANS-SAMUEL
IPC: C09B62/20
Filed: 1967-09-06
Abstract: 1,169,254. Reactive dyes. FARBENFABRIKEN BAYER A.G. 6 Sept., 1967 [10 Sept., 1966; 25 March, 19671, No. 40774/67. Heading C4P. Reactive dyes of Formula I in which D is an organic dyestuff radical, R is H or a C 1-5  alkyl or hydroxyalkyl group, R 1  is H or a substituent, R 2  is H halogen or an unsubstituted or substituted alkyl, alkenyl aralkyl or aryl group or is a carboxylic acid ester, carboxylic acid amide, alkylsulphone or arylsulphone group, F is a fluorine atom, the group -NR being linked directly to a carbon atom of the pyrimidine ring in 2 or 4 position and on the other side to an aromatic ring of dyestuff D either directly or via a bridge member are prepared by reacting in known manner a compound of Formula II R 1 , R 2  and F being as above, X being an anion which may be split off with a dye or intermediate having an amine or amide group with a reactive hydrogen atom and if required conversion of intermediate to dyestuff.
Patent GB-1084982-A (GB)
Title: A method of removing finely divided matter from gases and apparatus for performing the same
IPC: B01D47/10
Filed: 1964-10-07
Abstract: 1,084,982. Gas scrubbers. WAAGNERBIRO A.G. Oct. 7, 1964 [Oct. 8, 1963], No. 40964/64. Heading B1R. Dust-containing gases are sprayed with liquid at 4 and passed through venturi-shaped passages formed between members 7 and then through a passage between flaps 13, the flaps 13 being adjustable so that efficiency of dustseparation can be maintained constant under varying gas loads. A deflecting baffle 12 is arranged upstream of the flaps 13 and liquid is separated below the flaps as the direction of flow is reversed.
Patent GB-1498233-A (GB)
Title: Manufacture of n-triorganosilyl carbamates
IPC: C07F7/10
Filed: 1975-10-07
Abstract: 1498233 N-Silyl carbamate preparation WACKER-CHEMIE GmbH 7 Oct 1975 [7 Oct 1974] 40987/75 Heading C3S An N-triorganosilyl carbamate is made by reaction of an N-unsubstituted carbamate with a hexorganodisilazane and a triorganohalosilane at 20-65‹ C. in the absence of solvent or in the presence of not more than 10 wt. per cent of the reactants of a solvent and separation of the resultant N-silyl carbamate from the resultant ammonium halide. The reaction appears to be where R is an optionally substituted hydrocarbyl group and X is halogen. In the examples each of methyl, ethyl and n-butyl carbamate is reacted with each of hexamethyldisilazane and divinyltetramethyldisilazane plus trimethyl or vinyldimethyl-chlorosilanerespectively, in molar ratios of 3À06 or 3À1 : 1À03 or 1À05 : 1, for 3-8 hours at 60‹ C.
Patent GB-1178333-A (GB)
Title: Silver-containing Catalyst Electrodes for Fuel Cells.
IPC: H01M4/88
Filed: 1967-09-07
Abstract: 1,178,333. Fuel cell cathode. ROBERT BOSCH G.m.b.H. 7 Sept., 1967 [2 Nov., 1966], No. 40990/67. Heading H1B. An electrode is made by (a) forming a layer of a mixture of powdered Ag 2 CO 3 , a powdered fluorine-containing resin and a powdered watersoluble salt, (b) forming over this layer another containing a powdered fluorine-containing resin, (c) sintering the resin under heat and pressure, (d) reducing the Ag 2 CO 3  to Ag, and (e) leaching out the water-soluble salt. Resins specified are polytetrafluoroethylene and polytrifluorochloroethylene. Water-soluble salts specified are NaCl, Na 2 CO 3  and Na 2 SO 4 . Layer (a) may contain 10-50% Ag 2 CO 3  and 15-50% -resin. Silver wires may be inserted to improve conduction. Layer (b) may contain the same resin as (a) or a different one and may also contain a water-soluble salt. A third layer may be inserted between (a) and (b) containing powdered Ag 2 CO 3  and fluorinated resin in a different ratio to that in layer (a). The Ag 2 CO 3  containing layers may also contain Ni-powder and may be Compacted with heat and pressure before addition of layer (b). The electrode which may be in the form of a disc may be used as cathode in an H 2 /KOH/air cell at up to 200 C.
Patent GB-935314-A (GB)
Title: Preparation of n-hydroxymethyl pyrrolidone and carbon substituted derivatives thereof
Filed: 1961-11-17
Abstract: N-hydroxymethylpyrrolidone, or C-substituted derivatives thereof, are prepared by reacting pyrrolidone, or its C-substituted derivative, with formaldehyde, or a substance which liberates formaldehyde under the reaction conditions, in the presence of an alkaline catalyst. Suitable catalysts include sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate in amounts of 0,03-1% by weight, based on the pyrrolidone.  Substituted pyrrolidones which may be used include lower alkyl, lower alkoxy, lower alkyl thio, lower di (alkyl)amino, lower haloalkyl (the term "lower" indicating 1-6 carbon atoms), alicyclic derivatives, 3-, 4- and 5-halo or dihalo, nitro, and phenyl pyrrolidones.  The formaldehyde may be used as paraformaldehyde or trioxy methylene.  Examples describe the preparation of (1) N-hydroxymethyl-pyrrolidone; (2) N-hydroxymethyl-5-methyl-pyrrolidone; (3) N-hydroxymethyl-5-methoxypyrrolidone; (4) N-hydroxymethyl-5-dimethylaminopyrrolidone; (5) N-hydroxymethyl-4-cyclohexyl pyrrolidone.  The products may be used to produce dyes, or may be condensed with various alcohols, acids and aromatic ring containing compounds to form surfactants.
Patent GB-1305263-A (GB)
IPC: A23L27/20
Filed: 1970-09-02
Abstract: 1305263 Flavouring food and tobacco INTERNATIONAL FLAVORS & FRAGRANCES INC 2 Sept 1970 [2 Sept 1969 28 July 1970] 41942/70 Headings A2B and A2C [Also in Divisions C2 and A5] Food flavour modifying and tobacco flavour modifying compositions comprise as active ingredient a compound of the formulae: where m is 1, 2, 3 or 4, n is 1, 2 or 3, R 1  is attached to a ring-carbon atom and is a hydrogen atom or an alkyl radical, R 2 , R 4 , R 5  are each a hydrogen atom or methyl ethyl or propyl radicals, R 3  is a C 9-12  alkadienyl, cycloalkenyl, cycloalkylalkenyl, cycloalkylidenealkyl, or cycloalkenyl alkyl radical, one of R 6  and R 7  is an alkenyl radical and the other is a hydrogen atom or a C 1-5  alkyl radical, or R 6  and R 7  taken together form a cycloalkyl radical R 8  is hydrogen or hydroxyl, R 9  and R 10  each represent a hydrogen atom or a C 1-5  alkyl radical, E and G each represent a chain of optionally alkyl-substituted carbon atoms completing a cycloalkenyl ring and where the number of carbon atoms in the following combinations is as follows, R 2  + R 4  =C 0-2 ; R 2 +R 3 +R 4 =C 10-13 ; R 5 +R 6 +R 7 =C 8-11 ; R 9 + E=C 8-11 ; R 8 +R 9 +R 10 +G=C 8-11  together with, in the case of a food flavour modifying composition an ingestibly acceptable flavoring adjuvant and at least one adjuvant selected from vanillin, 1-(3, 4, 5-trimethoxyphenyl) propene- 2, cinnamic aldehyde, eugenol methyl ether and DL methionone. The compounds of the invention may be directly added to tobacco preferably in an amount 0.00005 to 0.3 weight %.
Patent GB-1118595-A (GB)
Title: Opaline materials
IPC: C04B35/14
Filed: 1965-10-04
Abstract: A method of preparing spherical amorphous silica particles, having a size within the range of 150 to 450 millimicrons and which are subsequently packed by sedimentation into a close-packed light-diffracting array having the same optical qualities as natural precious opal comprises heating at 100 DEG  C. a silica sol prepared by ion-exchange of Na silicate, adding fresh silica sol and NaOH to the mother liquor during heating to keep the liquor at constant volume and to maintain a pH of 7.5-11, and separating any flocculated material from the sol by successive centrifuge treatments.  The particles may be sedimented in a cylinder or by centrifuging.  The array of sedimented particles may be stabilized by drying at 100 DEG C. and then heating at 400-1200 DEG  C. A silica sol having particles of size less than 10 millimicrons may be added before or after sedimentation to bond the particles together on heating.ALSO:A synthetic opaline material having substantially the optical qualities of natural precious opal comprises a close-packed light-diffracting array of spherical amorphous silica particles having a size within the range of 150 to 450 millimicrons.  The particles of silica are first formed as a non-flocculated suspension and then packed into a light-diffracting array by sedimentation techniques.  The arrangement of the particles constituting the array is stabilized by drying the particles at 400 DEG  to 1200 DEG C.  The particles are bonded together by means of a cement e.g. silica which at least partially fills the interstices between the particles.  The particles and cement have a difference in refractive index of between 0.05 and 0.01.  The light-diffracting array is sealed in a close-fitting transparent containing medium such as glass or plastic.
Patent GB-1277925-A (GB)
Title: Photoelectrophoretic imaging process
IPC: G03G15/24
Filed: 1969-08-25
Abstract: 1277925 Photo-electrophoretic imaging XEROX CORP 25 Aug 1969 [30 Aug 1968] 42158/69 Heading G2H A photo-electrophoretic imaging apparatus is generally similar to that disclosed in Specification 1185932, but has nozzles 56, 64 for directing an insulating liquid into the nip between an imaging electrode 41 and the blocking electrode 42. The insulating liquid is the same as the carrier liquid for the photo-sensitive particles or compatibles therewith and is stated to prevent air breakdown or ionization between the electrodes during imaging and improve imaging. Examples of insulating liquids are Sohio Odorless Solvent Isopar G (Trade Mark) and Freon (Trade Mark). In another embodiment, a transparent flat injecting electrode (1), Fig.1 (not shown), co-operates with a blocking electrode (5) in the form of a roller and a transfer electrode (18).
Patent GB-1096043-A (GB)
Title: Improvements in magnetic core storage matrices
IPC: G11C17/02
Filed: 1964-10-15
Abstract: 1,096,043. Semi-permanent magnetic core stores. HOLLANDSE SIGNAALAPPARATEN N.V. Oct. 15, 1964 [Oct. 18, 1963], No. 42165/64. Heading G4A. A semi-permanent data store comprises a matrix array of magnetic cores with permanent magnet elements associated with these cores selected not to be operative. As shown the cores are assembled in recesses and apertures of two plastic sheets 108, 109 respectively which serve to position them accurately. The lower sheet is magnetic (e.g. by having magnetic powder incorporated) and rests on a magnetic plate 101. Permanent magnets 105 at each edge of the matrix coact with iron bar 102, the magnetic plate 101, the magnetic sheet 108, the cores, and bridge strips 111 to apply a magnetic field to those cores corresponding to projections 112, 113 on the strips 111. The use of the resilient layers 108, 109 enables the projections to bear on to the cores without being liable to break them; the gaps in the thencompressed sheet 108 being small enough to localize the magnetic field accurately to only those selected cores. The arrangement shows a " two core per bit " matrix, which has the advantage that one core of each pair (e.g. 115, list) will always be inhibited; this means that the number of projections on each strip is fixed, thus ensuring constant total magnetic flux for the bars. Magnetic shunts may be provided in single core per bit arrangements to maintain constant flux. Apertures 118 in the metal base-plate are provided to engage stud-like projections on sheet 108 for ensuring accurate location of the cores. Reference has been directed by the Comptroller to Specification, 875,388.
Patent GB-1143197-A (GB)
Title: A fluid cushion system for a ground effect machine
Inventor: FAURE MARC HENRI JEAN
IPC: B60V1/00
Filed: 1966-05-09
Abstract: 1,143,197. Air cushion vehicles. BERTIN & CIE. 9 May, 1966 [7 May, 1965], No. 42193/68. Divided out of 1,143,196. Heading B7K. An air cushion vehicle has a deflectable cushion-containing wall pivoted at 7 to structure 1 and constructed to form a convergentdivergent passage for fluid from the cushion 2 by forming it with a downwardly inclined portion 8b and an upwardly inclined portion 8a, the apex 8c forming a desired daylight clearance at point 10 and causing a flow separation so that escaping cushion air is contained within height h. The wall is urged downwardly against cushion pressure by a spring 9 which may be associated with a damper to reduce oscillations.
Patent GB-937008-A (GB)
Title: Electrical connectors
IPC: H01R31/02
Filed: 1961-11-28
Abstract: 937,008. Two-part couplings. BURNDY CORPORATION. Nov. 28, 1961 [Dec. 1, 1960], No. 42421/61. Class 38 (1). A terminal block assembly (Fig. 10) comprises a one-piece insulating housing 101 having a longitudinal connector receiving bore therein with a transverse first opening 111 disposed intermediate a side wall of the bore having a detachable one-piece connector 102 disposed therein, the overall longitudinal length of the connector being greater than the overall longitudinal length of the opening 111 and the bore and the connector having mating portions 115 and 113, respectively, interlocking to prevent longitudinal movement therebetween. In another embodiment (Fig. 1) the connector receiving bores are laterally disposed in the housing and each connector 2 is formed with a pair of socket portions 3. Both types of connector may be in strip form interconnected by a conductive webbing. The housings 1 and 101 may be interconnected by a mutual interlock (Fig. 6, not shown), comprising a pin with shoulders formed by opposed chord flats mating with a socket formed with two detents, to form a unitary structure. The housings may be disposed in a standard channel (Fig. 2, not shown) being retained therein by the use of endcaps (Figs. 15 and 16, not shown), two types of which are described, wedging legs on the housings against the inturned channel walls. The moulding operation to form the " interlock " pin and socket for the blocks is described (Fig. 4, not shown).
Patent GB-1493908-A (GB)
Title: Lead accumulators
IPC: H01M10/02
Filed: 1976-10-14
Abstract: 1493908 Lead-acid batteries RHEINISCHWESTFALISCHES ELEKTRIZITATSWERK AG 14 Oct 1976 [20 Oct 1975] 42673/76 Heading H1B A lead-acid battery is discharged at a temperature above 50 C., and has a negative electrode 3 with a coating 5 of ceramic, glass fibre or perhalogenated or unsubstituted polyolefines. The electrolyte is covered with e.g. paraffin oil or a fine powder.
Patent GB-1012233-A (GB)
Title: Improvements in or relating to the manufacture of reinforced unsaturated polyester resin sheets or plates
IPC: C08F283/01
Filed: 1961-11-29
Abstract: Polyester resin sheets capable of being shaped mechanically are prepared by a method which comprises (a) impregnating a permeable support of a reinforcing material with an unsaturated polyester resin, a monomer copolymerizable therewith, a polymerization activator comprising a reducing metal salt capable of initiating partial polymerization of the impregnant to the gel state, a polymerization inhibitor and a polymerization catalyst capable of effecting complete polymerization of the impregnant, and (b) thereafter immersing the impregnated support in a hot aqueous medium containing a polymerization accelerator and a wetting agent whereby the main body of the impregnant is caused to gel and the surface of the impregnant is caused to be polymerized to an extent intermediate between the gel state and a completely polymerized state whereby a smooth skin is formed on the surface of the sheet. The support may be a fabric, paper or metal.  The polyester may be derived from ethylene glycol, maleic anhydride, adipic acid and phthalic anhydride, and the cross-linking agent may be methyl styrene.  The preferred catalyst is benzoyl peroxide, inhibitor is 4-methyl-2,6-di-t.butyl phenol, initiator is stannous chloride, the action of which may be modified by tetrahydrofuran, furfurol, dioxane or dimethyl formamide, optionally with ethylene glycol, accelerator is dimethyl aniline, and wetting agent is a condensate of alkenylamines with ethylene oxide. The preferred temperature of the aqueous bath is about 70 DEG  C. The products may be stored for extended periods and mechanically shaped as required. Specifications 938,407, 941,481 and 981,020 are referred to.
Patent GB-892758-A (GB)
Title: Process for the production of 2-hydrazino-3-mercapto-quinoxaline
IPC: C07D241/44
Filed: 1960-12-12
Abstract: 2-Hydrazino-3-mercaptoquinoxaline is prepared by reacting 2,3-dichloroquinoxaline with hydrazine to give 2-hydrazino-3-chloroquinoxaline and treating this with an alkali metal hydrogen sulphide or with an alkali metal sulphide.
Patent GB-875142-A (GB)
Title: Improvements in machines for manipulating sheets or webs of stationery
Inventor: WATTS JACK
IPC: B41L5/06
Filed: 1956-11-22
Abstract: 875,142. Typewriters &c. SMITH & SON (ALACRA) Ltd., W. H. Nov. 20, 1957 [Nov. 22, 1956; June 13, 1957], Nos. 42866/60 and 42865/60. Divided out of 875,141. Drawings to Specification. Class 100(4) The subject-matter is identical with Specification 875,141 but the claims differ.