baber/WOPTO huggingface dataset:
Patent GB-1018039-A (GB)
Title: Improvements in or relating to internal shoe drum brakes
IPC: F16D65/08
Filed: 1964-03-13
Abstract: 1,018,039. Internal shoe drum brakes. ANDRE CITROEN S.A. March 13, 1964 [March 15, 1963], No. 10835/64. Heading F2E.  In an internal shoe drum brake of the type having leading and trailing shoes 1a, 1b respectively which are mounted on pivot pins 3a, 3b on a backing plate 4 and whose free ends are spread apart by an applying means, e.g. an hydraulic cylinder 5, two return springs of different power are provided, the stronger spring 7 acting only on the leading shoe and the weaker spring 9 between the two shoes, or between the trailing shoe and the backing plate, whereby when the brake is applied the trailing shoe engages the drum first and effects initial light braking before the leading shoe is brought into engagement.
Patent GB-579058-A (GB)
Title: Improvements in or relating to propellant compositions suitable for projectiles of the reaction-impulse type
IPC: C06B21/00
Filed: 1943-07-03
Abstract: A propellant suitable for projectiles of the reaction-impulse type (or for assisting in the take-off of aeroplanes) is made by mixing a gas-generating powder with N-alkyl urea-formaldehyde condensation product in liquid form, cold-moulding the mixture, and then curing the moulded product by heat.  The powder comprises an oxidizer such as sodium nitrate (50 per cent by weight) and a reducer such as ammonium picrate (50 per cent by weight).  The resinous condensation product is used in the partly-condensed liquid state, with or without a solvent such as a mixture of butanol and xylene, and may form 5 to 10 per cent by weight of the mixture of resin and powder.  When a solvent is used, the solution may contain 50-65 per cent by weight of resin.  The propellant may be made by mixing together the powder, the resin solution and a resin plasticiser such as toluene sulphonamideformaldehyde condensation product in a mill, a current of nitrogen or other inert gas being passed through the mill to remove solvents.  At the end of the mixing period the product, a dry dusty powder, is pressed into blocks at 15-35 DEG  C., examined for microscopic cracks by painting with a dye, partly cured by enclosing the blocks in sealed containers (to prevent evaporation of residual solvent and resultant cracking of the blocks), and then completely cured in the open.  The condensation product may be made by condensing a mixture of 70 per cent by weight of N-butyl urea and 30 per cent of urea, with formaldehyde, in a mixed solvent containing equal volumes of normal butanol and xylene, the solution containing 50 per cent solids by weight.  The condensation is carried to a point at which the liquid resin has a viscosity between 3000 and 4000 poises at 25 DEG  C.  Specifications 248,089, [Class 9 (ii)], 354,305, [Group XXI], and 579,057 are referred to.
Patent GB-527387-A (GB)
Title: Improvements relating to plugs for the ends of pipes
IPC: F16L55/132
Filed: 1939-04-11
Abstract: 527,387. Stopping pipes. CONLON, J. April 11, 1939. Nos. 10922 and 20609. [Class 99 (ii)] A plug for insertion in the socket end of a pipe comprises a number of loosely fitting rigid discs 1 and a number of tightly fitting rubber &c. discs 3, the discs being compressed by a bolt 4 and nut 5 to expand the rubber discs radially. The discs are recessed at la, 3a to confine the pressure to the exterior of the discs. The bolt may be hollow and provided with a test-cock and gauge. Retaining means may be provided comprising a divided collar 10 engaging behind the socket flange 11 and a bar 13 bolted to the collar and provided with set-screws 15.
Patent GB-1291024-A (GB)
Title: A tensioner for use in a string of racing floats
IPC: E04H4/14
Filed: 1969-10-08
Abstract: 1291024 Swimming pool lane-marker tensioners SWIMQUIP Inc 8 Oct 1969 [4 Feb 1969] 10937/71 Divided out of 1282479 Heading A4N [Also in Division F2] A tensioning device for use in a string of racing lane floats in a swimming pool comprises a cylindrical housing 23 with a hook 40 supported at one end for attachment to a cable supporting racing lane floats, a first threaded fastener in the form of a threaded rod 35 attached to and within the housing 23, and a second threaded fastener 44 engaged with the threaded rod 35 and attached to a hollow rod 42 which has an eye 20 for connection to the pool wall 11 by an S-hook 21 such that relative rotation of the housing and the eye 20 causes an axial pull on said cable. Ribs 24-27 attached to the housing 23 support rings 28, 28a. The body of the tensioner may be made in hard plastics.
Patent GB-1061175-A (GB)
Title: Fluid pressure operated multi-position ram
IPC: F15B11/12
Filed: 1964-03-16
Abstract: 1,061,175. Fluid-pressure actuators. T. HINDMARCH. March 3, 1965 [March 16, 1964], No. 11071/64. Heading F1P. A pneumatic or hydraulic actuator comprises an actuating piston 1 movable along a cylinder and an abutment, formed by a further piston 7, movable along the cylinder to a predetermined position determined by a fixed projection 5 (e.g. an annular ring) in the cylinder wall, to retain the actuating piston in a position intermediate its end positions. In the embodiment shown, the actuating piston has a piston rod 9 extending in one direction into a further cylinder 10, and the abutment piston lies on the other side of the piston. The piston 1 is movable to the right or left of the position shown by pressure fluid introduced at 12, 13, but otherwise is retained in the intermediate position shown by fluid at the same pressure on the abutment 7 and in the cylinder 10. In a modification Fig. 4 (not shown), there are three abutments (7, 7a, 7b) which with the actuating piston divide the cylinder into five spaces. The application of pressure to each of these spaces moves the piston 1 to a particular position, the movement of the piston (1) and of the abutments being restricted by projections (5, 5a, 5b). In another embodiment Fig. 3 (not shown), the actuating piston is in its single intermediate position, held by an abutment (7, 7a) on each side, and in a modification Fig. 2 (not shown), the piston has a central annular projection (15) and the abutments are mounted on the periphery of the piston and are held against the annular projections (5 and 15) by fluid-pressure at the two sides of the piston. Reduction of the pressure at one side causes the piston to move, carrying one abutment with it.
Patent GB-1506912-A (GB)
Title: Filters employing photochromic materials
IPC: G02C7/10
Filed: 1975-03-18
Abstract: 1506912 Photochromic materials and uses thereof WESTERN ELECTRIC CO Inc 18 March 1975 [18 March 1974] 11105/75 Heading C4S An optical filter includes a photochromic material which is at least partially crystalline and comprises a cyclic aziridine and/or oxirane selected from the alternatives:  in which R 1  and R 2  are aromatic substituents with up to 3 rings, R 3  is an aromatic substituent, R 4  and R 5  are either hydrogen or alkyl groups with up to 5 C atoms, n is 1 to 5, R 6 , R 7 , R 8  and R 9  are either aromatic, alkyl or hydrogen, at least two being aromatic, R 11  is aromatic or alkyl group, R 10  is either aromatic, a carboxylic acid group, an ester group or amide group, and wherein R 6-11  have up to 20 carbon atoms so that the change in absorption characteristic produced by radiation is large for one plane of polarization compared with another plane. Wavelengths and lifetimes are considered for various substituents. Single crystals of the aziridine compound may be used, crystals of less than the wavelength of light reducing scattering, and may be implanted in a host (e.g. transparent plastic, with refractive index close to that of the compound). Alignment may be by stretching nitrocellulose unidirectionally, other methods being by reference to publications. Concentration may be 0À0001 to I molar depending on absorption desired, thickness may be 0À1 mm to several cms. (e.g. 0À5 mm to 1 cm.). Complete alignment or otherwise depends on the application e.g. some sunglasses may require some absorption of both polarizations, although more of one than the other. The sheet of Fig. 1 (not shown) may be between glass for use as a window pane or automobile windshield. The light switching device of Fig. 3 (not shown) switches one polarization of signal light (31). A quarter-wave plate (35) may be used with circularly polarized light and element (36) may change the plane polarized. Excitation radiation used to switch the device may enter along the same path as signal radiation (31). The switching system of Fig. 4 (not shown) includes a laser system or LED (41), and detector (43).
Patent GB-886753-A (GB)
Title: Process for the isolation of optically active amino-acids from protein hydrolysates
Filed: 1958-04-08
Abstract: Optically active amino-acids are isolated from protein hydrolysates by esterifying the hydrolysate with a monohydric alcohol containing 1-4 carbon atoms, removing excess of the alcohol, converting the resulting esters into the N-trifluoroacetyl derivatives by reaction with an ester of trifluoroacetic acid and an aliphatic alcohol containing 1-4 carbon atoms in the presence of an inert solvent and a tertiary amine, removing the solvent and excess liquid reactants, distributing the reaction product by a single or multi-stage process between water and an organic solvent immiscible with water (e.g. benzene, chloroform, methylene chloride or carbon tetrachloride) separating the organic phase, removing the solvent, fractionally distilling the N-trifluoroacetylamino-acid esters under reduced pressure, and splitting off the N-trifluoroacetyl and alcohol residues with a dilute solution of an inorganic base. The initial protein hydrolysate may first be split by means of an ion-exchanger into basic, acid and neutral amino-acids and the fractions individually treated as above.  In other modifications, glutamic acid may first be removed from the protein hydrolysate by addition of concentrated hydrochloric acid, and/or cystine and tyrosine removed by adjustment of the hydrolysate to about their iso-electric point and filtration of the amino-acids.
Patent GB-713584-A (GB)
Title: Combined support and pivot for rudders and nozzle-rudders of ships
IPC: B63H25/38
Filed: 1952-05-02
Abstract: 713,584. Ships' rudders. KORT, L. May 2, 1952, No. 11215/52. Class 114 A combined support and pivot for a ship's spade rudder or nozzle rudder c comprises a large diameter flange e provided on top of the rudder and pivotally mounted in a ball bearing b fitted on the underside of the stern of the ship. Means are provided for preventing water from entering the bearing.
Patent GB-547354-A (GB)
Title: Improvements in folding boxes of cardboard, paper or the like material
IPC: B65D5/26
Filed: 1941-09-03
Abstract: 547,354. Folding boxes. CLELAND, Ltd., W. W., and BUCHMAN, A. A. Sept. 3, 1941, No. 11276. [Class 18] A folding box of cardboard &c. has a recessed lid the side or end and front flanges of which enshroud the top edges of the front and side or end walls and hold in a plane parallel to the back wall the front wall, which is otherwise unsupported, and also enshroud the top edges of extension flaps on certain walls which have interlocking tongue and slot-connection with the end walls; the front wall may be provided with one or more crease lines and be wholly or partly cut through from its top edge to the crease lines to form a fall panel of single or variable depth. As shown in Fig. 1, the lid 4 has a front panel 5 which enshrouds the fall panel. 9 of the front wall 2 when the box is closed and the flap has wings 6 which engage wings 7 by tongue and slot connection' 8 to form the side or end flanges which enshroud the top edges of flaps 11 extending from the wall 2 and interlocking with the end walls 14 by tongues 12 and slots 13. The panel is formed by cuts 10 and is provided with a series of scored or perforated hinge lines 46. The end panels 14 and if desired panels 15 extending from the back 3 may have slots registering with the slots 13. The fall front may have tongues at its upper edge for engaging slots in the hinge line between the flap 5 and its lid, and in a modification the flaps 11 extend from the back wall instead of from the front wall. In a further modification, Fig. 5, the back panel 22 of the blank has end panels 27 with flaps 29, slots 45 in the end panels extending into the flaps and being engaged by the tongues 44 on flaps 33 extending from the front panel 24 while tongues 42 in the end panels 27 engage slots 43 on end panels 31 extending from the base panel 23. The wings 37 on the lid flap 41 are locked to the wings 35 by tongues 39 engaging slots 40, the tongues and slots being arranged so that lifting of the lid will not tend to unlock the connections.
Patent GB-570647-A (GB)
Title: Improvements in and relating to methods and apparatus for mixing and supplying gaseous fuels
IPC: F23K5/00
Filed: 1941-09-04
Abstract: 570,647. Mixing gaseous fuels. HOBBS, J. W. Sept. 4, 1941, No. 11299. [Classes 50 and 55 (ii)] [Also in Group II] A gaseous fuel consisting of a mixture of a combustible gas such as acetylene or coal gas, and the vapour of a low-boiling liquid such as ether, is obtained' by compressing the gas delivered to a compartment 2 of a container 1 in a compressor 4 which supplies it to a pressure compartment 3, a pipe 8 leading the compressed gas to above the surface of the liquid in a vessel 7. The'gas and vapour pass by a pipe 11 to a venturi mixing device 13 which is also supplied with the compressed gas by a pipe 5, the mixture then being delivered for use, for example for welding, soldering or brazing. The venturi mixing device comprises two nozzles 14, 15, the latter being axially adjustable, and retained in position by a locking screw 16.
Patent GB-980688-A (GB)
Title: Reinforced plastic pipes
Inventor: NARRACOTT ERIC SYLVESTER
IPC: F16L11/10
Filed: 1961-03-28
Abstract: 980,688. Reinforced plastic pipes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. March 6,1962 [March 28, 1961], No. 11309/61. Heading F2P. A band 3 comprising fibrous material and hardened thermosetting resin is wound helically on to a substantially uniform layer of a composition comprising a hardened thermosetting resin and fibrous material formed on the external surface of a thermoplastic pipe 1, the pitch of the helix being greater than the width of the band. Preferably, the pipe 1 is extruded and is of polyvinyl chloride, polyethylene, polypropylene or a copolymer of ethylene and propylene or ethylene and a minor amount of n-butene, and particularly a high-density polyolefin; the pipe may be made by winding bands around a mandrel the successive turns of the band being fused together, or by bending a thermoplastic sheet round a former and welding the seam. The surface of the pipe may be provided with one or more longitudinal ribs and/or grooves to assist keying of the layer 2, or the pipe may be roughened. Among the thermosetting resins used for forming the layer and the band may be the phenol-formaldehydes, urea-formaldehyde, alkyd, silicone and melamine resins and polyester resins, but preferably epoxy resins; the epoxy resins may be made flexible by such agents as polyether polysulphides having mercaptan end groups, oligomers of unsaturated fatty acids, polyamides from such oligomers and polyamines, epoxidized vegetable oils, polyamines having a long-chain alkyl substituent and polyesters such as reaction products from adipic acid and glycerol. The fibrous material for the layer 2 in the form of fibres, rovings or threads may be glass fibre, nylon, rayon, or cotton, but preferably polyethylene terephthalate; the fibres are disposed in substantially axial direction, and may be applied at an angle up to 15 degrees to the axis of the pipe to keep the fibres in place or, alternatively, a few thin threads or rovings are wound helically round the fibres. A cloth of the fibres can be used. The band may consist of one or more ribs and have a cross section which is square, rectangular, triangular, trapezium, shaped, semi-circular, semi-elliptic or of other irregular form, and may be in the form of a tape, string or bundles of rovings. To improve the regularity of the helical band and prevent the grooves between successive turns being filled with resin during winding of the band, a band, wire or string of flexible material is wound around the pipe prior to or simultaneously with the band 3 and subsequently removed.
Patent GB-610668-A (GB)
Title: A method of producing glass-to-metal joints
IPC: H01J9/32
Filed: 1946-04-12
Abstract: 610,668. Metal-to-glass seals. SOC. FRANCAISE RADIO-ELECTRIQUE. April 12, 1946, No. 11373. Convention date, Feb. 14, 1941. [Class 36] A method of making metal-to-glass seals, such as pinches for valves and electric-discharge tubes, comprises assembling the metal and glass elements in a jig and melting the glass by means of electric current passed directly through the metal elements. As shown in Fig. 5, lead-in rods 2, 21 fitted through nipples 5, 5<1> in the glass 1 are positioned by a metal jig 6, the lower ends of the rods dipping into metal cups 10, 11 containing readily-fusible metal 13 to which the heating current is supplied through leads 7, 8. To ensure uniform melting and flow of the glass, the rods may be provided with flanges 14, Fig. 8, at the seal locations, a stop-device 15 limiting the movement of the flanges into the melted glass. A thermo-electric couple 19 and a tube 18 supplying inert gas, such as hydrogen, may be arranged inside the glass member. The apparatus shown may be enclosed in a sliding metal casing.
Patent GB-229906-A (GB)
Title: Improvements in and relating to centrifugal turbo-mixers
IPC: B01F5/00
Filed: 1924-05-08
Abstract: 229,906. Mond, A., (Chemische Fabrik Griesheim-Elektron). May 8, 1924. Mixing and churning apparatus.-In a turbomixer with an externally driven rotor wheel, the groups of nozzles for introducing the liquids to be emulsified can be connected in series or in parallel. The casing 1 is closed by a cover 2 to which is secured the nozzle carrier 3, the ducts for the liquid being contained in the space between the cover 2 and the carrier 3. Liquid admitted through the inlet 52 passes through the duct 51 to the nozzles 5 and that admitted through the inlet 43 passes through the ducts 42, 41 to the nozzles 4. The pipe 61 conveys liquid to the nozzles 6. The rotor 9 carries blades 7, or the blades may be carried by two or more rims. The blades are wider than the nozzles and are sharpened at the leading edge. The lower outlet 12 may be connected to the pipe 61 by the pipe 14 so that the nozzles 4, 5 are in series with the nozzles 6, or liquid may be supplied to the pipe 61 so that the nozzles 6 work in parallel with the nozzles 4, 5.
Patent GB-345832-A (GB)
Title: Travelling device for the mechanical preparation of sand casting beds for pig iron foundries
IPC: B66C3/00
Filed: 1930-04-11
Abstract: 345,832. Foundry plant. ARDELT, R., 1, Heegermuhlerstrasse, Eberswalde-inder-Mark, Germany. April 11, 1930, No. 11478. Convention date, April 13, 1929. [Classes 83 (i) and 83 (iv).] Moulding-machines; treating mould materials.- A machine B, Fig. 1a, movable on a travelling beam A carries all the tools necessary to clear a cast-pig bed and prepare it for another casting. A vertically movable head C carries a magnet or magnets D which can be used for picking up single pigs, a bundle of pigs bound with chains, or a basket filled with pigs, for clearing the sand of small pieces of iron, and for lifting a pattern plate J, Fig. 2, and dropping it on the smoothed sand to form the bed. The head C also carries, on either side of the magnets, a harrow G, Fig. 1a, and levelling board F, which can be turned out of the way when not in use. The head may also carry a hook K, Fig. 3, in place of the magnets D, for a grab R by which sand is transported or a separate winding apparatus L and grab may be provided. Breaking.-The machine also carries a drophammer P for breaking the pigs and for supporting a levelling plate H which can be set in position to produce the necessary horizontal steps in the sand. The head C may be connected to a pointer T, Fig. 2, arranged adjacent to a pointer S which is moved automatically by a drum R in accordance with the general slope of the bed so that the operator can adjust the position of the head C to keep it at a constant distance from the sand.
Patent GB-1136112-A (GB)
Title: Production of epoxy resins
IPC: C08G59/06
Filed: 1966-03-16
Abstract: 1,136,112. Epoxy resins. CELANESE COATINGS CO. 16 March, 1966 [25 March, 1965], No. 11503/66. Heading C3B. Epoxy resins of higher molecular weight are produced from a first epoxy resin containing more than one but not more than two wc-epoxy groups per molecule by reaction with a dihydric phenol in the ratio of one equivalent of epoxy group of the first resin to less than one equivalent of phenolic hydroxyl at 50-150 C. in the presence of an amine catalyst. The catalysts have the formula NRR<SP>1</SP>R<SP>11</SP> in which R, R<SP>1</SP> and R<SP>11</SP> are the same or different and at least one is a hydrocarbon group of up to 22 carbon atoms having a methylene group adjacent the nitrogen atom and being free from groups reactive with epoxide groups, or a hydrocarbon group of up to 10 carbon atoms having an ethylene group adjacent the nitrogen with a #-hydroxyl substituent but otherwise free from groups reactive with epoxy groups, any of the substituents R, R<SP>1</SP> and R<SP>11</SP> remaining being hydrogen atoms. The catalyst is used in an amount which is, where it is a secondary or tertiary amine having no #-hydroxyl-containing substituent or a tertiary amine having a single such substituent, 0À0005-0À002 mole, or in any other case from 0À001-0À05 mole, per epoxide equivalent. The reaction may be performed in the presence or absence of organic solvents. The process and products claimed in Specification 1,087,166 are disclaimed.
Patent GB-502295-A (GB)
Title: Improvements in or relating to alloying molybdenum and more particularly for introducing molybdenum into iron or steel
IPC: C22C33/00
Filed: 1938-04-14
Abstract: 502,295. Alloys. CLIMAX MOLYBDENUM CO. April 14, 1938, No. 11564. Convention date, Feb. 10. [Class 82 (i)] Molybdenum-containing ferrous alloys are made by adding to ferrous metals briquettes comprising a mixture of molybdenum dioxide and a relatively small amount, preferably one tenth, of a pitch binder.
Patent GB-258812-A (GB)
Title: Improvements in canisters for containing and delivering powders
IPC: A47K5/10
Filed: 1926-05-03
Abstract: 258,812. Pineger, G. F. R. May 3, 1926. Powder distributers.-A canister for containing and delivering powders comprises a hollow body 1 with a discharge opening at its lower end 3 normally closed by a valve 13 of conical or part spherical form and having a stem or rod 8 extending upwards through a detachable lid 4 which carries an exterior hollow boss 5 forming a housing for a spring 6 forcing the valve on to its seat; one or more pins 12 mounted on the stem 8 agitate the contents of the canister when the valve is depressed by the knob 9 to allow discharge of powder. The pins 12 may be replaced by perforated discs and the canister may be provided with integral or attached lugs or brackets by which it can be secured to any convenient structure.