baber/WOPTO huggingface dataset:
Patent GB-837275-A (GB)
Title: Improvements in or relating to electric wave filters
IPC: H03H9/54
Filed: 1956-05-08
Abstract: 837,275. Filter circuits. SIEMENS & HALSKE A.G. May 8, 1956 [May 9, 1955], No. 14285/56. Class 40 (8). One arm of a ladder-type filter having highpass, low-pass, band-stop or band-pass characteristics comprises a tuned element in the form of an electro-mechanical resonator (piezo-electric or magnetostrictive) and at least one further reactive element which gives the arm a secondary resonance, an adjacent arm having a tuned element which repeats this secondary resonance. In the band-pass filter shown the shunt arm contains a piezo-electric crystal element 1 in parallel with a parallel-resonant circuit 4 and the series arms contain parallel-resonant circuits 2 identical with the circuit 4. The attenuation peak produced by the crystal 1 may be arranged to determine the lower limit of the pass band whilst an adjacent attenuation peak at a frequency below that of the first peak is determined by the circuits 2, 4. The upper attenuation peak can be determined (or eliminated) by further parallel-resonant circuits 3 which may in some cases be simply inductors. Alternatively the attenuation peak produced by the crystal may determine the upper limit of the pass band in which case the tuned circuits 3 may be simply capacitors. In a further arrangement both the upper and lower limits are produced by crystal resonance in which case the circuits 2, 4 consist of crystal resonators. The filter may be designed so that the mid-shunt impedance of a half-section is given by the expression where Á is a constant, #2 and #1 are the limit frequencies, #α is the resonant frequency of the crystal filter and ## the resonant frequency of the tuned element in parallel with it. Where the circuit is in the form of a # network the shunt arms may include crystals resonant at frequencies which determine the limits of the filter band. Where the filter contains a number of sections it is not necessary for the resonant frequency of the third tuned elements to be exactly the same as the resonant frequency of the second tuned elements ; small deviations are permissible. The network may incorporate impedance transformation sections consisting of capacitors. Multi-electrode crystals may be used in some embodiments.
Patent GB-1500382-A (GB)
Title: Silver halide photographic light-sensitive material
IPC: C07D257/04
Filed: 1975-04-08
Abstract: 1500382 DIR compound-containing emulsions FUJI PHOTO FILM CO Ltd 8 April 1975 [8 April 1974] 14460/75 Heading G2C A colour photographic material, prior to imagewise exposure, comprises at least one light-sensitive emulsion layer containing silver halide in sufficient amount to form a visible silver image on imagewise exposure to light and development and (b) a hydrophilic colloid layer containing (i) at least one reducing agent having an oxidation potential not exceeding 1À5 volts and which reducing agent is ascorbic acid or an ester thereof or is represented by the Formula wherein R<1> and R<2> each represent an optionally substituted linear or branched alkyl group containing from 8 to 20 carbon atoms and R<2> may also represent a hydrogen atom; A<2> and A<3> each represent a hydrogen atom or a group which is capable of being eliminated by alkaline hydrolysis, R<3> represents an alkyl group containing not more than 8 carbon aroms, a halogen atom, an aryl group, a hydroxyl group or a heterocyclic group, and n is 0, 1 or 2, or an alkali-hydrolysable precursor of such a reducing agent, and (ii) at least one compound represented by the general Formula wherein A and A<1> each represent a hydrogen atom or a group which is capable of being eliminated by alkaline hydrolysis, or A<1> may, together with R or Q, complete a ring; P, Q and R each represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group, a halogen atom, a hydroxyl group, a heterocyclic group, an -O-W or -S-W group, wherein W represents an optionally substituted alkyl or aryl group, or a heterocyclic group, or an -S-Z group, wherein Z represents a heterocyclic group, and wherein the compound of Formula (I) contains at least one ballasting group having at least 5 carbon atoms. Suitable A and A<1> (and A<2> and A<3> groups in Formula II) groups are alkylcarbonyl, alkoxycarbonyl or alkoxy-carbonylcarbonyl. When A<1> with R or Q completes a ring it may be e.g. an oxathiazole ring. Z in Formula I is preferably of the Formula wherein M represents alkyl or optionallysubstituted phenyl. Substituents in R<1> and R<2> include halogen, hydroxy, alkoxy, aryloxy, aryl, amino, acylamino, imido, carboxy, alkoxy carbonyl, carbamoyl, or sulphonamido. Examples of reducing agents are 2, 5-di-tert-octyl-, 2-noctadecyl, 2-n-hexadecyl, 2-n-octadecylthio-5-tertoctyl- and 2-(3'-methylphenyl)-hydroquinones. Premature oxidation of DIR compounds can be prevented by incorporating organic acids or salt thereof into a high-boiling solvent and/or hydrophilic colloid together with the DIR derivative and/or reducing agent. Other DIR couplers, interlayer correction couplers and interlayers interimage effect promoters can also be incorporated, lists of these and also of yellow, magenta and cyan couplers are given.
Patent GB-1510013-A (GB)
Title: Plug and socket pipe joint
IPC: F16L47/08
Filed: 1975-04-08
Abstract: 1510013 Pipe joints REHAU PLASTIKS GmbH 8 April 1975 [8 April 1974] 14463/75 Heading F2G In a spigot and socket type pipe connection, a sealing ring 3 and circumferential groove 2 in which it is housed are positioned towards the wide point of the socket length on the side thereof nearer the neck, and the zone of the socket between the groove and neck is tapered over at least a part thereof. The sealing ring groove is placed preferably at a distance ratio 3 : 2 as measured from the socket mouth 12. The socket diameter immediately to the inner side 21 of the groove is preferably of smaller diameter than that on the adjacent outer side 22, and at the innermost socket end 11 may correspond to that of the spigot pipe end diameter.
Patent GB-1354234-A (GB)
Title: Ultrasonically weldable polyethylene compositions
IPC: C08L23/00
Filed: 1972-03-28
Abstract: 1354234 Polyethylene compositions KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 28 March 1972 [6 April 1971] 14474/72 Heading C3P Ultrasonically weldable compositions in the form of two or more components comprise 20 to 70 parts by weight of chalk per 100 parts of low pressure polyethylene. The components may be used for making plugs for attachment to electric leads.
Patent GB-1378905-A (GB)
Title: Process for the preparation of trithiopyrophosphates
IPC: C07F9/165
Filed: 1971-05-12
Abstract: 1378905 Trithiopyrophosphoric acid esters EDWIN COOPER & CO Ltd 3 May 1972 [12 May 1971] 14496/71 Heading C2P [Also in Division C5] Compounds of Formula I where R is primary alkyl, and the groups R<SP>1</SP>, which may be the same or different, are primary alkyl, aryl, alkaryl or primary aralkyl and where the aromatic nucleus in the aryl, alkaryl or aralkyl groups may be substituted by one or more halogen atoms or alkoxy groups, or mixtures thereof, are prepared by heating at least one corresponding dithiophosphoric acid at a temperature of at least 120‹ C., until the acid value (measured by neutralizing a solvent comprising 50/50 benzene/IMS to lacmoid indicator, dissolving the reaction product in this solvent and titrating with KOH until the lacmoid endpoint is reached), has fallen to 10 to 70 mg. KOH/ g., and thereafter neutralizing the reaction mixture. The reaction mixture may be neutralized with a metal oxide or hydroxide, ammonia or an amine, or the reaction mixture may be dissolved in an inert solvent and neutralized with aqueous caustic soda or potash or moist sodium carbonate, and may subsequently be dried over magnesium sulphate. The reaction may be carried out in the presence of an inert solvent, such as xylene, toluene or mineral oil, preferably of lubricating viscosity. The dithiophosphoric acid starting material may be prepared by the reaction of one or more primary alcohols and/or phenols with phosphorus pentasulphide. The compounds of Formula I prepared may be used as lubricant additives. Reference has been directed by the Comptroller to Specification 1,287,514.
Patent GB-1385696-A (GB)
Title: Method and apparatus for mixing chemical solutions for use in agriculture
IPC: G05D11/00
Filed: 1972-03-28
Abstract: 1385696 Proportionate mixing of flowing liquids SUMITOMO CHEMICAL CO Ltd and TOKICO Ltd 28 March 1972 [29 March 1971] 14552/72 Heading B1C Apparatus for diluting and spraying an agricultural pesticide or fertilizer, has water and additive conduits 3, 9 with respective orifices 4, 8 upstream of a mixing junction 5, a regulating valve 7 in the conduit 9 being controlled by a diaphragm pressure equalizer 10, and a stop valve 6 in the conduit 9 being actuated by a flow detector 11 in the conduit 3 to start and stop the additive fluid responsive to one of the spray apparatus 15. The additive supply pump pressure may be predetermined by a bypass and valve 16; the discharge from the bypass also agitates additive in tank 2. In modifications flow detectors (11, 14 Fig. 2 not shown) across both orifices may be monitored by a controller (12) to close the valve (6) in the event of malfunction of the regulator 10; the valve 6 may be controlled in dependance on a concentration detector (14', Fig. 3 not shown) downstream of the mixing junction 5, or in dependance on a combination of the concentration detector (14') and flow detector 11.
Patent GB-258318-A (GB)
Title: Improvements in and relating to oil or gas fired kilns
IPC: F27B17/00
Filed: 1925-06-04
Abstract: 258,318. Murray, W. S. June 4, 1925. Pottery &c. kilns.-A gas or oil fired kiln comprises an horizontal combustion chamber d located within and at one side of the burning- chamber of the kiln, the combustion chamber being fixed by one or more horizontally-delivering burners and being in direct communication with and exposed to the heat of, the burning- chamber. As shown the combustion chamber consists of a trough or channel into which burners deliver from both ends, the portions of the trough near the burners being covered in by arches e. A baffle wall a may be fitted between the combustion chamber and the burning-chamber. The heating-gases escape through openings g near the floor at the opposite side from the combustion chamber and may pass through a number of chambers in series before escaping to the chimney. By means of flexible piping a single set of burners may be adapted for firing a number of chambers of the series, and when opposed nozzles are used one may deliver fuel and the other air. The chimney openings j are distributed along the length of the wall and lead to a partitioned uptake k controlled by dampers l. When a number of chambers are connected for series working the floors are arranged at progressively increasing heights.
Patent GB-562096-A (GB)
Title: Improvements in gas meters
IPC: G01F3/22
Filed: 1942-10-17
Abstract: 562,096. Gas meters. BINGHAM, J. H. Oct. 17, 1942, No. 14561. [Class 54] The body of a gas meter is built up of two open-mouthed boxes 1, 2 of sheet metal or synthetic resin assembled back to back and secured together by welding, rivets, bolts, or screws, an open-mouthed box 3 having its base parallel or in contact with the upper faces of the boxes 1, 2, and end members 10 secured in the open mouths of each box. A valve grid of normal construction fitted in the box 3 communicates by conduits 4, 5 with the boxes 1, 2 in which are arranged the usual diaphragms. They may be rectangular or cylindrical. The end members 10 may be soldered or welded in position or be dished and provided with lugs to receive securing bolts. The boxes and end members may be internally coated with vitreous or other enamel, paint or plastic material.
Patent GB-528834-A (GB)
Title: Improvements in and relating to grinding wheels
IPC: B24D18/00
Filed: 1939-05-16
Abstract: 528,834. Grinding-wheels. NORTON GRINDING WHEEL CO., Ltd. May 16, 1939, No. 14570. Convention date, May 19, 1938. [Class 60] [Also in Groups II and V] A grinding-wheel is made by forming simultaneously an abrasive portion and a centre portion by pressing in one part of a mould a mixture of abrasive grain and powdered metal, and in another part powdered metal, and then sintering at a temperature below the melting point of the metal. The wheel shown in Fig. 5 comprises an outer part 11 which contains diamonds and is thicker but less dense than the central part 10. Preferably, an intimate mixture of 81.4 and 18.6 parts by weight of finely powdered copper and tin is employed, and the outer part contains also 25 per cent. by volume of diamond grain. The metal powder is placed on a mould part 15, mould parts 15a, 16, 19 are applied, the metal and diamond powder is placed between the mould parts 15a, 19, a mould part 16a is applied, and high pressure is applied to close the mould. The amounts of the powders are such that the central part 10 is from 5-15 per cent. denser than the part 11. A removable plug 17 forms a central hole in the wheel. The wheel is subsequently sintered, preferably at a temperature of 550‹ C., in a reducing or inert atmosphere. Alumina, or silicon or boron carbide may replace the diamonds, and powders containing specified proportions of nickel as well as tin and copper may be employed. The wheel may be in the form of a cup having the abrasive on a side face. U.S.A. Specification 2,072,051 is referred to.
Patent GB-103094-A (GB)
Title: Improvements in or relating to Fuses for Explosive Projectiles.
Inventor: DUBOIS JULES
IPC: F42C1/02
Filed: 1916-10-14
Abstract: 103,094. Dubois, J. Sept. 14, 1916, [Convention date]. Projectiles; projectile fuses.-Relates to percussion fuses having spring strikers, and consists in making the striker with a weakening-notch to cause it to break on impact to fire the fuse. As shown in Fig. 1, the striker e is held cocked against its spring f by triggers m, n in engagement with the weakening- notch e<2> of the striker. The striker projects beyond a grenade a and ends in a knob i, which, when the striker is uncocked by wedging the triggers aside by a loose collar r, prevents the striker from reaching the percussion cap g, as shown in dotted lines. To ensure that the knob shall strike the target, the striker is disposed at an angle to the axis X Y of the grenade. When applied to projectiles and bombs, the striker is disposed obliquely or at right-ongles to the longitudinal axis: and the bomb is made with a feathered tail.
Patent GB-747652-A (GB)
Title: Improvements relating to germicides
IPC: A01N35/02
Filed: 1951-06-21
Abstract: Germicides are made by (1) condensing an aliphatic saturated aldehyde (e.g. formaldehyde or acetaldehyde) with a ketone (e.g. acetone, methyl ethyl ketone, diethyl ketone, acetyl carbinol, mesityl oxide or phorone) or with a hydroxyaldehyde (e.g. glycerine aldehyde or aldol) while maintaining the mixture alkaline; (2) rendering the resultant product free from physiological action on living bodies by such portion of the starting substances that do not take part in the condensation reaction by removing such portion (e.g. by distillation) or by forming compounds which have no haemolytic effects by adding substances which react with aldehydes or ketones (e.g. ammonia or bisulphites); and (3) adding an alcohol, a mixture of alcohol and water, a fat, oil, or wax, or a mixture of two or more of these substances.  The condensate of step (2) may be esterified by adipic or phthalic acid or adjusted to pH 4-6 by the addition of phosphoric acid, boric acid, adipic acid, monosodium phosphate, sodium bisulphite, para - chloro - meta - cresol, salicylic acid, resorcinol, 2 - ethoxy - 6 : 9 - diamino - acridine hydrochloride or iodine.  Polyethylene oxide or thickening agents, e.g. the sodium salt of polyacrylic acid or methyl cellulose ether, may also be added.ALSO:Germicides having no haemolytic effects are made by (1) condensing an aliphatic saturated aldehyde with a hydroxyaldehyde or a ketone while maintaining the mixture adlkaline, (2) rendering the resulting product free from physiological action on living bodies by such portion of the starting materials that do not take part in the condensation by removing such portion (e.g. by distillation) or by forming compounds which have no haemolytic effect by adding substances which react with aldehydes or ketones (e.g. ammonia or bisulphites) and (3) adding an alcohol, a mixture of alcohol and water, a fat, oil, or wax, or a mixture of two or more of these substances.  The condensate of step (2) may be esterified by adipic or phthalic acid or adjusted to pH 4-6 by the addition of phosphoric acid, boric acid, adipic acid monosodium phosphate, sodium bisulphite, parachloro-meta-cresol, salicylic acid, resorcinal, 2-ethoxy-6 : 9- diamino-acridine hydrochloride or iodine. Polyethylene oxide or thickening agents e.g. the sodium salt of polyacrylic acid or methyl cellulose ether may be added.  The products may be emulsified or they can be used in the form of paste or creams.
Patent GB-450584-A (GB)
Title: Improvements in or relating to telephone instruments
IPC: H04M1/02
Filed: 1935-05-20
Abstract: 450,584. Sets. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and WARRINGTON, A., c /o General Electric Co., Ltd., Stoke, Coventry. May 20, 1935, No. 14703. [Class 40 (iv)] In a telephone instrument in which the line termination apparatus, such as the ringer and induction coil, is enclosed in a base surmounted by a cradle member on which the hand micro-telephone normally rests, ventilating means is provided at the apex of the base to provide an air circulation through the apparatus comprised in the line termination. As shown, the base 1 of truncated pyramidal form has a rectangular top surmounted by a cradle 10 and pierced with holes 5 and a hole 7 closed by the stem of the cradle switch. A closely coiled spring 8 allows the passage of air whilst excluding the ingress of insects. The bottom of the base 1 is closed by a plate in which ventilating holes are drilled. In a modification, horizontal slots are formed in the apex of the base and extend from the inside of the instrument to the outside, a gauze grille being fixed inside the base.
Patent GB-570860-A (GB)
Title: Improvements in or connected with cutter-chains for cutter-chain mining machines
IPC: E21C35/193
Filed: 1943-09-08
Abstract: 570,860. Mining-machines. LOGAN, W.A. Sept. 8, 1943. No. 14716. [Class 68 (i)] A cutter-chain for a mining-machine comprises links formed of two side-pieces B each provided with a lug 1, the side-pieces and an intermediate distance-piece C being held together by rivets 10 ; a rectangular key-piece D is let into the distance-piece and welded thereto, the key-piece having machined arcuate parts 5 with teeth 6 adapted to engage similar teeth on an angularly adjustable cylindrical pick holder E provided with a saw-cut 9, a transverse rectangular hole 8 for the pick F, and an axial bore adapted to receive a bolt H by which the parts are held. The key-piece D has a rectangular opening 4 allowing adjustment of the tail-piece of the pick. The Provisional Specification states that the pick holder may have trunnion extensions engaging apertures in the lugs 1.
Patent GB-782898-A (GB)
Title: Improvements in detergent compositions
Inventor: HUDSON BERTRAM JAMES FRANK
IPC: C11D3/32
Filed: 1954-05-19
Abstract: A soapless detergent composition having improved lathering properties contains an ionic organic soapless detergent and a compound of the general formula <FORM:0782898/III/1> where R1 is an alkyl radical of from 8-14 carbon atoms, R2 is hydrogen or an alkyl radical of 1-4 carbon atoms, R3 is hydrogen or either an acyl or an alkyl radical of 1-4 carbon atoms, and where R2 and R3 may be joined to form a cyclic structure containing either 4 or 5 carbon atoms. Examples of such compounds are N-dodecyl acetamide, N,N-diacetyl dodecylamine, N-dodecyl pyrolidone, N-dodecyl succinimide, N-dodecyl piperidone, and N-dodecyl-N-methyl acetamide.  The Provisional Specification also mentions the use of para-n-octyl acetanilide.  If desired, these compounds may be further substituted by groups such as methoxyl, provided that these substituents do not inhibit the lather-improving properties.  The compounds are used in amounts ranging from 1-50 per cent, preferably 4-20 per cent, of the organic detergent.  The detergent is preferably anionic, e.g. an alkylaryl sulphonate, but cationic detergents, such as cetyltrimethylammonium bromide, may also be used.  If desired, sulphates, silicates, carbonates, condensed phosphates, and salts of carboxymethylcellulose may be added as builders to the composition.
Patent GB-1533745-A (GB)
Title: Device for facilitating transport of a hand-held power tool
IPC: A01C1/00
Filed: 1977-04-07
Abstract: 1533745 Percussion tool transporter R ANDERSSON 7 April 1977 14829/77 Heading B4C A pavement breaker or other percussive apparatus 5 has at least one wheel 3 which can be extended to contact the ground to facilitate transporting the apparatus or retracted to a position in which it does not contact the ground and to facilitate use of the apparatus, wheel 3 being mounted at one end of a rod 2 connected to a piston movable in a cylinder 1 by fluid supplied through inlets 7, 8 at the ends of the cylinder. Compressed air may drive breaker 5 and extend and retract wheel 3. Controls are provided in handle 6. Rubber bushings 4 may connect parts 1, 5 to damp vibration. A tubular holder (9, Fig. 3 not shown), may be provided for breaker 5 with attached smaller tubes (11, 12) for a pair of pistoncylinder-wheel assemblies.
Patent GB-881035-A (GB)
Title: Shaped cigar binders or wrappers
IPC: A24C1/04
Filed: 1957-11-19
Abstract: The subject-matter of this Specification is identical with that of Specification 881,033 but the claims relate to the specific shape of cigar binder formed.  Specification 881,034 also is referred to.
Patent GB-545127-A (GB)
Title: Improvements in or relating to steam generating and superheating installations
IPC: F22G5/02
Filed: 1940-10-08
Abstract: 545,127. Water-tube steam boilers ; steam superheaters. SUPERHEATER CO., Ltd., and SOUTHCOTT, L. C. Oct. 8, 1940, No. 15010. [Classes 123 (ii) and 123 (iii)] A boiler has upper and lower drums 2, 1 connected by tube banks 3, 4 enclosing main and auxiliary water-cooled furnaces 7, 8, which are separated by a baffle 11 supported on vertical water tubes 12 and extending partly across the boiler. A superheater 5 on the main furnace side of the baffle is protected by spaced water tubes 13. A superheater or reheater 6 is disposed in the main tube bank 3. The gases from the furnaces 7, 8 may flow directly to their respective uptake 14, 15, but when the boiler is under load, a damper 16 in the uptake 14. is closed to allow the whole or part of the gases from the main furnace to now over the superheater 5 into the auxiliary furnace and thence over the tube bank 3 to the uptake 15. The firing of the auxiliary furnace is regulated to control the temperature of the steam delivered by the heater 6,which may be used as a superheater operating in series or parallel with the superheater 5.