baber/WOPTO huggingface dataset:
Patent GB-121588-A (GB)
Title: Improvements relating to Miners' Electric Lamps.
Inventor: CHOMIER LOUIS
IPC: F21L4/00
Filed: 1918-10-23
Abstract: 121,588. Chomier, L. Dec. 17, 1917, [Convention date]. Battery lamps.- The battery is an accumulator of the alkaline type, one of the electrodes c being soldered to the iron or steel container a which thus becomes one of the poles of the battery. The container is closed by a cover e through which passes an iron or nickel tube f, the lower part h of which is cut away and connected to the other electrode b. The tube f thus forms the other pole of the batter-- and serves also as a gas exit and as a means for filling the battery with electrolyte. The tube f is fitted with a plug i containing a spring contact r for engagement with the lamp terminals. Two or more lamp bulbs q are carried in the lantern, a corresponding number of spring contacts s being provided to enable one or more of the lamps to be illuminated by rotation of the lamp head, the contacts s engaging a metal plate l in electrical contact with the battery container. A magnetic lock is provided con. sisting of a spring-pressed iron stud u which normally projects into the interior of a ring j on the top of the battery container as shown in plan in Fig. 3. A stop y fixed to the interior of the ring i prevents the head m of the lamp from being un. screwed until the stud u has been withdrawn by a magnet. The Specification as open to inspection states that the electrode c consists of sheets of perforated tinned steel soldered to the container to form sectors in which the plates b of the other electrode are placed. The plates b are of nickel covered with nickel oxides held in place by an insulating envelope permeable to gases.
Patent GB-1460879-A (GB)
Title: Butterfly valve
IPC: F16K1/226
Filed: 1975-04-25
Abstract: 1460879 Valves TRW Inc 25 April 1975 [25 April 1974] 17373/75 Heading F2V A butterfly valve has a resilient liner 7 for the body 6, including tubular portions 13, 14 surrounding shafts 15, 16; each pair of shaft and liner portions having thrust bearing surfaces 47, 49; 48, 50, incorporating means providing increasing compressive resistivity between abutting surfaces as the disc 35 approaches the closed position. In a preferred embodiment, the increased compressive resistivity of abutting surfaces is obtained by providing surfaces 67, 67a on a backing ring 64 with corresponding surfaces on the liner tapering so that thinner liner material is engaged by the butterfly disc as it closes. Alternatively the contacting surfaces around the shaft apertures between the backup ring (8) Figs. 3, 4 (not shown), and liner may have skew form inclined in a radial plane along the line (55), with respect to the surface (48).
Patent GB-460694-A (GB)
Title: New or improved control for two stroke internal combustion engines
IPC: F01L1/00
Filed: 1936-06-23
Abstract: 460,694. Regulating. TUGWOOD, R. J. (Daimler-Benz Akt.-Ges.) June 23, 1936, No. 17437. [Class 7 (vi)] In means for controlling two - stroke engines, the timing of the closure of exhaust is made adjustable so that it may take place before, or after, or simultaneously with the closure of the inlet. The exhaust port in the cylinder head may be controlled by a poppet valve actuated by a lever mounted on an adjustable eccentric fulcrum, or exhaust port A, Fig. 4, may be controlled by a slide valve S actuated by a cam, the shaft N of which may be adjusted sideways, for example to the position N<1>, Fig. 5, the driving-chain K being kept taut by a tension roller R.
Patent GB-410981-A (GB)
Title: Improvements relating to machinery guards
IPC: F16P3/08
Filed: 1933-06-20
Abstract: 410,981. Machinery guards. GIBBS, H. C., Standard Flock Mills, Ltd., Athole Street, Birmingham. June 20, 1933, No. 17535. [Class 80 (iv).] A machine having feeding or other rollers has a guard roller or bar b carried by pivoted arms c connected to a rod d. The latter has a member k engagable with a notch in a belt-shifting rod e. The work, e.g. rags, is fed to the machine under the roller b. Should the operator's hand be caught in the work, his arm engages and lifts the roller b, thus disengaging the rod e and permitting the latter, under spring or weight action, to stop or reverse the machine. The machine has a cover m pivoted to the arms c and having a cam n bearing upon a fixed abutment o. When the cover is in the closed position, the guard roller b can operate as described above. If the cover is in the open position, the coaction of the cam n and abutment o lifts the arms c to stop or reverse the machine.
Patent GB-356793-A (GB)
Title: Method of and apparatus for synthesizing vitamins
Filed: 1930-06-06
Abstract: Vitamins are synthesized by treating parent substances with suitable radiations with the exclusion of oxygen.  The treatment may be carried out either in an evacuated vessel or in an atmosphere of an inert gas such as nitrogen or argon.  The vessel containing the substance to be irradiated is preferably made of a material such as quartz, which is transparent to the radiations used.  Cholesterol is a suitable parent substance, and infra-red or ultra-violet radiations, the latter including the near, middle, and far regions, may be employed for the treatment.  When cholesterol is subjected to the action of infra-red radiation by continued heating at its melting-point, vitamin A is first formed, after which vitamin D appears; ultra-violet radiation acting thereon produces mainly vitamin D.  Reference has been directed by the Comptroller to Specifications 270,296, 286,665, 318,268, and 318,269, [all in Class 2 (iii), Dyes &c.].
Patent GB-1385055-A (GB)
Title: Acoustic surface wave devices
IPC: H03H9/02
Filed: 1971-05-05
Abstract: 1385055 Surface wave devices DEFENCE SECRETARY OF STATE FOR 28 April 1972 [5 May 1971] 17563/72 Divided out of 1372235 Heading H3U Acoustic surface or interface waves passing between input and output transducers are amplified by interaction with a set of spaced filamentary conductors, a portion of which cross semi-conductor material insulated therefrom, in which an electron drift velocity exceeding the acoustic surface wave velocity is established. The substrate 139 is piezo-electric, or a piezolayer on a base, or electrostrictive in which case a biasing electric field is provided. As shown in Fig. 2, a plurality 141a-141d of semi-conductors each interact with a proportion of the filamentary conductors 143, which pass over a thin insulating film (not shown) between them and the semi-conductor. In Fig. 1 (not shown) a single semi-conductor (141) shares a common base (not shown) with piezo substrate (139). Conductor spacing may differ on the piezo substrate, semi-conductor, respectively. In Fig. 3 (not shown), a non-piezoelectric, sapphire substrate (147) supports the surface waves, and aluminium nitride piezoelectric material (149, 157, 161) is provided under or over the transducers (149, 155) and filamentary conductors 165, which also pass over or under silicon semiconducting thin film 163 with an insulating film between it and the conductors. In Fig. 4 (not shown) the semi-conductor material (209) is above the conductors (207) which need thus be provided only adjacent the surface wave track. In Fig. 5, to reduce electro-acoustic coupling between conductors 177, and that part of the substrate 173 removed from track A, a low dielectric constant silica layer 175 is provided under the conductors, see also Fig. 6 (not shown). Alternatively the semi-conductor 179 may be made narrower than track A, Fig. 8 (not shown), or if layer 175 is omitted, a suitable choice of semi-conductor layer and biasing reduces electro-acoustic coupling. The narrower semiconductor layer may be mounted under or over the conductors. Completed assemblies may have a protective cover. The filamentary conductors may form closed loops, a perpendicular biasing magnetic field, possibly biasing a magnetostrictive substrate, being provided. The filamentary conductor spacings may be equal, monotonically changing, or random. If a pair of side-by-side output transducers (171, 183), Fig. 7 (not shown), are provided, amplification and track changing can be achieved for suitable semi-conductor biasing.
Patent GB-695720-A (GB)
Title: Improvements in and relating to the production of artificial filaments, threads and the like by a continuous spinning process
Inventor: BARRATT HAROLD
IPC: D01D10/04
Filed: 1950-07-14
Abstract: Artificial thread is obtained by extruding a fibre-forming solution through a multi-hole jet into a coagulating bath, and the thread is withdrawn on to a rotating thread take-up device and subjected, continuously with the process of thread formation, to liquid treatment while it is travelling over and along a number of rotating thread-storage, thread-advancing reels, a false-twist being imparted to it during its passage <PICT:0695720/IV (a)/1> from the first of such treatment reels by leading it directly against the edge of a smooth annular guide surrounding and rotating with the second reel, which is rotating in the opposite direction to the first reel.  The false-twist reduces the tendency for some of the component filaments to become separated from the thread.  The smooth annular guide should be the only surface making frictional contact with the thread during its passage from the first reel to the second reel in order that the false twist may be imparted effectively.  This guide may take the form of a cowl surrounding the receiving end of the second reel and its diameter may be about 1 inch greater than that of the reel.  If desired, a similar arrangement for imparting a false twist may be provided at each of the reels.  The thread may be dried while on the spinning-machine and then collected in the form of a package, or a number of threads may be collected into a bundle for subsequent conversion into staple fibre.  The process is applicable to the production of artificial threads from viscose, cuprammonium cellulose solutions, casein solutions or cellulose acetate solutions.  It may be used in the production of high denier multi-filament thread for use in making motor tyres.  As shown, a multi-filament thread 7 travelling continuously from a coagulating bath passes to reel 1 and travels round and along the reel in helical turns.  Dilute sulphuric acid is sprayed from pipe 10 on to the thread on reel 1.  The thread 7 passes directly from reel 1 to the edge of the smooth annular guide 8 before passing to reel 2, which is rotating in the opposite direction to reel 1. The annular guide imparts a false twist to the thread.  The thread is treated with water from pipe 11.  From reel 2, the thread passes through guide 9 to reel 3, where it is treated with liquid from pipe 12.  Specifications 413,413, 413,414, [Group IX], 474,973 and 653,363 are referred to.
Patent GB-151763-A (GB)
Title: An improved educational appliance
IPC: G09B17/00
Filed: 1919-07-15
Abstract: 151,763. Browne, W. S. July 15, 1919. Diagrams.-A device for teaching the alphabet consists of two cards a, b mounted to turn relatively to one another, the upper card a being provided with a key aperture and through which letters of the alphabet and names on the lower card are seen as the lower is rotated, and with other apertures e for exposing pictorial representations of animals or things on the lower card corresponding to the letters and names exposed at the key aperture, preferably in relevant positions in a landscape or other picture on the upper card.
Patent GB-562691-A (GB)
Title: Improvements in or relating to the manufacture of higher fatty acid esters of cellulose
IPC: C08B3/22
Filed: 1942-12-14
Abstract: A cellulose ester of a higher fatty acid, such as lauric, palmitic, or stearic acid, which is contaminated with a free higher fatty acid, is purified by treatment with an aqueous solution of a lower aliphatic alcohol which is at ordinary temperatures completely miscible with water, the concentration of the aqueous alcohol being such that, at the temperature employed for the extraction, the cellulose ester is not substantially softened thereby.  The cellulose ester may be a mixed ester containing radicals of both higher and lower fatty acids. Cellulose aceto-stearate may be obtained by the action of stearic anhydride on cellulose acetate in presence of a diluent, e.g. a mixture of a lower alkylene dichloride and acetone, capable of dissolving the mixed ester as it is formed.  On conclusion of the reaction, the mixed ester may be precipitated from solution by means of a liquid which is miscible with the diluent, but in which the cellulose ester is insoluble.  The cellulose ester may be purified by treatment with an aqueous solution of ethyl, iso-propyl, or other water-miscible lower aliphatic alcohol. Ethyl alcohol may be used in the form of a 50-85 per cent aqueous solution at a temperature up to about 80 DEG  C.  The extraction of fatty acid may be carried out as a batch process in one or more stages of immersion. Alternatively, the alcohol may pass continuously through a column containing the cellulose ester.  A series of columns may be arranged so that the alcohol passes consecutively through each member of the series.  Alcohol remaining in the material may be removed by evaporation or by washing with water.  The fatty acid may be recovered from the alcohol by cooling, by dilution with water, or by distilling off part of the alcohol.  The cellulose ester treated may contain formyl, acetyl, propionyl, or butyryl radicals in addition to higher fatty acid radicals such as lauryl, stearyl, or palmityl. Specification 543,311 is referred to.
Patent GB-791541-A (GB)
Title: Process for the production of methylol-substituted aliphatic ketones
Filed: 1954-06-16
Abstract: A methylol-substituted aliphatic ketone is prepared by condensing acetone or a homologue thereof, e.g. methyl ethyl ketone, with formaldehyde in the presence of a basic catalyst and of one or more aliphatic alcohols containing not more than 3 carbon atoms, there being used about 4 mols. of alcohol per mol. of formaldehyde and not more than 2.2 mols. of formaldehyde per mol. of ketone.  Preferably not more than 2 mols. of formaldehyde are used per mol. of ketone and if desired, the molar amount of ketone used may exceed that of the formaldehyde.  The formaldehyde may be used as an aqueous solution or in the form of paraformaldehyde or trioxymethylene.  Suitable catalysts include the oxides, hydroxides, carbonates and bi-carbonates of the alkali metals and alkaline earth metals.  The alcohol is preferably methanol; ethanol and the propanols are also mentioned. The condensation may be effected at from room temperature to the boiling-point of the reaction mixture.  In Examples, acetone (3 mols.) is reacted with 1 molar proportion of paraformaldehyde or of aqueous 30 per cent formaldehyde with or without additional water, in the presence of methanol (4 mols.) using aqueous NaOH as catalyst at 20 DEG  C.; the product is then stripped in vacuo at 60 DEG  C., catalytically hydrogenated in isopropanol using a Raney nickel catalyst and the resulting secondary alcohols esterified with acetic anhydride; the esters are then fractionated yielding 1,3-butanediol diacetate, 3,3-dimethylol isopropanol triacetate and 3,3,3-trimethylol isopropanol tetracetate whereby the condensation reaction is shown to form predominantly monomethylol acetone, 3,3-dimethylol acetone and 3,3,3-trimethylol acetone.  It is stated that in some cases the trimethylol acetone may be isolated from the condensation mixture by crystallization after addition of methyl ethyl ketone; in other cases, the bulk of the monomethylol acetone may be isolated by distillation, and the residue may then be hydrogenated as above or in the presence of a copper-chromium oxide catalyst.
Patent GB-1043580-A (GB)
Title: Improvements in or relating to methods of manufacturing casting moulds and moulds thus manufactured
IPC: B22C9/04
Filed: 1964-04-29
Abstract: 1,043,580. Mould and core materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 29, 1964 [May 2, 1963], No. 17754/64. Headings B3F. [Also in Division B5] A method of manufacturing a casting mould comprises applying to a model a first coating layer of a jellifiable suspension of a fine-grained refractory power, e.g. zirconium silicate and a binder, e.g. a mixture of polyethyl silicate, water, hydrochloric acid, and ethanol, a coarser-grained refractory power, e.g. aluminium silicate, being applied, if desired, on the moist layer, which is then gelled, and applying jellifiable supporting layers to the first layer, e.g. of the same composition as that of the first layer, each supporting layer being gelled and the resulting mould dried, and the method is characterized in that at least the first supporting layer is gelled from the interior by means of a gelling agent. The latter may comprise a buffer solution, e.g. a solution of ammonium acetate or ammonium acetate and acetic acid.
Patent GB-740409-A (GB)
Title: A continuous semi-gas furnace
IPC: C21D9/70
Filed: 1953-06-26
Abstract: 740,409. Continuous furnaces. STAHLWERKE SUDWESTFALEN AKT.-GES. June 26, 1953 [June 26, 1952; June 26, 1952], No. 17809/53. Class 51 (2). In a continuous heat treatment furnace of the "semi-gas" type, coal-fired producer units 6-9 are disposed in pairs opposite one another at the discharge end and in the middle of the furnace respectively, and are associated with upper combustion chambers 20 and 21 having arched roofs and boundary walls rising abruptly and sharply from the roof of the furnace heating chamber. The chambers 20 and 21 are respectively provided with gas supply ducts 15 and 16 and with compressed air supply ducts 11, 12 and 13, 14, and combustion is completed in the said chambers so that charge material is partially heated by radiation therefrom. Combustion gases pass through the tunnel towards the entrance 1, returning by a sole flue (not shown) to a waste gases flue 19. The furnace is thus divided into a preheating zone 3, a firing zone 4 and a soaking zone 5. In a modification, Fig. 4 (not shown), a producer unit is arranged in the end-on position at the discharge end of the tunnel, and the furnace is discharged laterally. Another modification, Fig. 7 (not shown), has a baffle extending horizontally across the central combustion chamber, below the side gas ports, air supply nozzles extending over the baffle for substantially the whole length thereof.
Patent GB-184012-A (GB)
Title: Improvements in and relating to gas impervious materials
IPC: D06M15/17
Filed: 1921-06-30
Abstract: 184,012. British Thomson - Houston Co., Ltd., (General Electric Co.). June 30, 1921. Proofing.-Materials which remain pliable and impervious to gases at low temperatures are obtained by impregnating an internal animal membrane with a mixture containing a hardening- agent, such as nigrosine, and a hygroscopic polyhydric alcohol having a low freezing-point. The membrane, which is preferably obtained from the throat lining or the bladder of cattle, may before impregnation be treated with a dilute solution of a vegetable tanning-agent, such as gallic or tannic acid. A suitable impregnating-agent consists of glycerine 30 parts, ethylene glycol 5.5 parts, nigrosine 2 parts, and water 70 parts.
Patent GB-1354618-A (GB)
Title: Devices adaptable to automatic lathes for cutting tubular work pieces
IPC: B23D21/00
Filed: 1971-05-28
Abstract: 1354618 Shearing SOC NOUVELLE DE ROULEMENTS 28 May 1971 [4 June 1970] 17896/71 Heading B3W A tubular workpiece 1 rotating in, for example, an automatic lathe, is cut by two freely rotating wheels 2 on opposite sides of the workpiece and coupled so that the pressures exerted by the two wheels are balanced. In the arrangement shown, each wheel is mounted for rotation on a lever arm 4, the lower ends of which are squeezed together by an hydraulic piston and cylinder 8, 9 against the reaction at pivots 6 in a frame 6<SP>1</SP>. The lower ends of the levers are guided in a slideway 10 which carries stops to adjust the cutter spacing. In the arrangement of Fig. 2 (not shown), the hydraulic arrangement is replaced by a central cam (14). An arrangement is also described, Fig. 3 (not shown) in which one of the cutters has a profile shaped to upset burrs caused by the cutting action of the other cutter while in a still further arrangement, Fig. 4 (not shown), a separate tool (23) removes or upsets the burrs caused by the cutting. The cutting wheels or the entire cutting assembly may be mounted for movement parallel with the axis of the workpiece 1.
Patent GB-830822-A (GB)
Title: Substituted phenols
IPC: C07C309/87
Filed: 1957-04-16
Abstract: The invention comprises 5-chloro- and 5-bromo - 4 - hydroxybenzene - 1 : 3 - disulphonyl chlorides, their preparation by reacting o-chloro- or o-bromo-phenol with chlorosulphonic acid, and their conversion to 4 : 5-di-chloro- and 5 - bromo - 4 - chloro - benzene - 1 : 3 - disulphonyl chlorides by heating with phosphorus pentachloride.  Examples are given.
Patent GB-222962-A (GB)
Title: Improvements in or relating to loud speaking telephonic apparatus
IPC: G10K11/02
Filed: 1923-07-11
Abstract: 222,962. Graham, E. A. July 11, 1923. Supporting; magnetic instruments.-Portable loud-speaking telephonic apparatus is arranged within a case with one or more movable sides or doors. The end d of the horn fills completely the aperture at one end of the case, which is closed by a door c. The door may be hinged to one side of the case, as shown, or hinged to the top of the case. The loud-speaking telephone is constructed as described in Specification 222,961, and may be adapted to slide in the case so that it may be withdrawn wholly or partly through the front or back. Or the case may be provided with a hinged or removable cover f to enable the receiver h to be adjusted. The adjustment may, however, be effected through an aperture either in the side or top wall. The case is fitted with a handle b. The case mav be provided with a screw-threaded socket to which a folding tripod or other stand g can be attached. The tripod can be folded up and placed within the case when not in use. The bottom of the case may be provided with a boss to which three legs may be hinged so that they can be folded up against the case when not in use; or the legs may be hinged to two corners and the middle of the opposite side. The twin conductors connected to the telephone receiver may be wound upon a spring-controlled drum mounted within the case and, it may be, on the receiver 'frame or base when this is removable from the case. The receiver and horn may be accoustically insulated from the case by washers of non-sonorous material. Specifications 15369/15 and 220,990 also are referred to.
Patent GB-1468703-A (GB)
Title: Locking device for use with a pump
IPC: C22C27/04
Filed: 1974-04-25
Abstract: 1468703 Locking device for releasable joints ITT INDUSTRIES Inc 25 April 1974 [25 April 1973] 18176/74 Heading F2G A locking device for a connection between a submersible pump unit 1 and an outlet pipe 2 comprises a guide means 5 fixed to pump unit 1 and slidable rigid guide 6 and a locking cam lever 8 pivotable on a suspension unit 9 attached to outlet pipe 2, the locking cam lever being pivoted by operating means 10 to press the upper part of guide 5 against guide 6 so that pump unit 1 is pressed against outlet pipe 2. In operation pump unit 1 is lowered, guided by means 5 until catch 7 on guide means 5 grips over flange 3 of pipe 2 bringing flange 4 of pump unit 1 into alignment with flange 3 the flanges being pressed together by the weight of the pump unit. The locking cam lever 8 is then pressed by operating means 10 against a portion of the upper part of guide means 5 that projects away from the pump unit which in turn pushes guide means 5 to the right as shown in the Figure resulting in pump unit 1 being pressed downwards into firmer contact with flange 3. To release the connection locking cam lever 8 is pivoted away from guide means 5 by operating means 10 which removes the additional pressure from flanges 3, 4 thus allowing pump unit 1 to be raised away from outlet 2. The locking device may be used for high power hydraulic motor driven pumps where the motor unit is integral with the pump unit and is very light.