baber/WOPTO huggingface dataset:
Patent GB-1040365-A (GB)
Title: Improvements in or relating to the manufacture of synthetic polyurethane elastomers
Inventor: KIRKALDY DAVID
IPC: C08G18/73
Filed: 1964-02-20
Abstract: Polyester urethane elastomers are prepared by reacting (1) a linear copolyester diol of average M.W. 1500-3500 derivable by a process of esterification from one or more aliphatic or cycloaliphatic glycols having 2-20 C, and adipic acid, optionally together with one or more other dicarboxylic acids selected from saturated aliphatic and aromatic dicarboxylic acids, (2) from 2-20 moles, per mole of copolyester diol, of an aliphatic diol optionally containing arylene groups separated from the -OH groups by at least one methylene group or a cycloaliphatic diol, which diol has not more than 20 C and (3) from 96-100 moles, per 100 moles of the foregoing diols, of an aliphatic diisocyanate which may optionally contain arylene groups separated from the -NCO groups by at least one methylene group, or a cycloaliphatic diisocyanate, said diisocyanate having 4-24 C. Diisocyanates specified are: trans-1,4-diisocyanato cyclohexane, trans-1,4-bis-isocyanato methyl cyclohexane, 2,2 - di - (41 - isocyanato-cyclohexyl) propane, trans,trans-di-(4-isocyanato - cyclohexyl) methane and hexamethylene-, tetramethylene-, pentamethylene, decamethylene, m-xylylene-, and p-xylylene diisocyanates. The polyesterurethane may be formed in solution, e.g. pyridine, N,N-dimethylacetamide, dimethylsulphoxide mixed with methyl-isobutylketone, N,N - dimethylformamide, hexamethylphosphoramide and tetramethylene sulphone.
Patent GB-491773-A (GB)
Title: Electron multipliers
IPC: H01J43/30
Filed: 1937-05-21
Abstract: 491,773. Electron multipliers; circuits. STANDARD TELEPHONES & CABLES, Ltd. May 21, 1937, No. 7252/38. Convention date, July 31, 1936. Divided out of 493,217. [Classes 39 (i) and 40 (v)] The operation of an electron-multiplier tube is stabilized by causing slow changes in the output current due to instability in operating characteristics to control either the focusing magnetic field or the potentials applied to the secondary-emitting electrodes. In one arrangement, Fig. 1, the output circuit includes an auxiliary winding 90 mounted on a yokemember connecting the polepieces 86, Fig. 2, of the magnet 87 producing the focusing field in the tube 75. A condenser 94 byepasses the signal frequencies. In a second arrangement, Fig. 4, the connection to the positive pole 93 of the voltage source includes the anode-cathode path of a triode 97, the grid of which is biassed by the potential across a resistance 95 in the output circuit. A decrease in amplification causes the grid to become more positive and the internal resistance of the triode to fall so that the potentials on the secondary-emitting electrodes are increased, and vice versa.
Patent GB-705252-A (GB)
Title: Process and apparatus for forming a reinforced edge on fabric
Inventor: ROLASTON NORMAN
IPC: D06M23/18
Filed: 1950-03-23
Abstract: 705,252. Woven fabrics. BRITISH INDUSTRIAL PLASTICS, Ltd. March 12, 1951 [March 23, 1950], No. 7361/50. Drawings to Specification. Class 142(4) [Also in Groups VII and VIII] Reinforced edges are formed by fusion and pressure on open-mesh woven, knitted or net fabric composed of filaments or strands wholly or mainly of fusible material, e.g. a thermoplastic such as polyvinylidene chloride. Non-fusible material, e.g. cotton, may be incorporated therewith.
Patent GB-726236-A (GB)
Title: Improvements in and relating to sprinklers for fire extinguishing installations
IPC: A62C37/10
Filed: 1953-03-17
Abstract: 726,236. Fire-extinguishing. WALTHER & CIE AKT.-GES. March 17, 1953 [Jan. 5, 1953 ; Jan. 7, 1953], No. 7364/53. Class 47. In a downwardly directed sprinkler, the closure valve f is arranged at the level of the lower side of the supply pipe e instead of adjacent the head a and is held in closed position by a heat-sensitive element b, a spring k, a flanged tube i and a rod g having a bifurcated end h. In a modification, the valve is pivoted on the casing c and the rod and flanged tube are replaced by a rod in two parts.
Patent GB-416321-A (GB)
Title: Improvements in or relating to the thermostatic-control of the feed supply and heating in steam generators
IPC: F22D5/14
Filed: 1933-03-11
Abstract: 416,321. Feedwater regulators for steam boilers. SENTINEL WAGGON WORKS, Ltd., 20, Iddesleigh House, Caxton Street, Westminster, and DOBLE, A., Alta Vista, Ridgebourne Road, Shrewsbury. March 11, 1933, No. 7450. [Class 123 (ii).] A thermostatic control device is subject to the thermal action of the steam in the outlet pipe or superheater, and of the feed or boiler water or both and also in some cases by the thermal action of the furnace gases. A thermostat inserted in the path of the gases between the steam generating coils 23, Fig. 1, and the steam heating coils 24, 25 of a coiled tube boiler, consists of a rod inserted in and bearing against the closed end of a tube 31, to which is welded the limbs of U-bend 32 in the steam delivery pipe. A U-bend 36 between the steam generating coils and the steam heating coils and a U-bend 37 in the feed supply pipe 45 are welded to the bend 32. The steam from the steam heating coil 24 passes through a throttle valve 27 and is reheated in the coil 25. One of the bends 36, 37 welded to the thermostat may be dispensed with. A casting having borings corresponding to the U-bends 32, 36, 37 and a boring corresponding to the tube 31 may be used in place of the U-bends. Steam from tube coils 56, Fig. 10, of a horizontal boiler, after passing through a throttle valve 62 is reheated in a tube 64 containing a thermostat 65 controlling a byepass 78 in the feed supply pipe 74 and a valve on the pipe supplying fuel to the burner 69. Feedwater circulates through a jacket 71 around the steam pipe between the throttle valve and the tube 64.
Patent GB-762131-A (GB)
Title: Improvements relating to the sealing of anodically oxidised aluminium
IPC: C25D11/24
Filed: 1954-03-15
Abstract: 762,131. Seating anodized aluminium. GEIGY AKT.-GES., J. R. March 15, 1954 [March 18, 1953], No. 7456/54. Class 41. Anodized aluminium whether dyed or not is sealed in a hot aqueous bath containing nickel and cobalt salts and formaldehyde-aromatic sulphonic acid condensation products having a dispersing action. Typically the bath contains per litre of water 5 gms. nickel acetate crystals, 1 gm. cobalt acetate crystals, 8 gms. boric acid, and 1 gm. of the condensation product of naphthalene sulphonic acid and formaldehyde produced as in Specification 7137/13, [Class 2 (iii)], and is used at a temperature of 80- 100‹ C. Other suitable condensation products are those of formaldehyde and naphthol sulphonic acids, and those of formaldehyde, urea or thiourea, and aromatic polysulphone sulphonic acids as in Specification 683,084, [Group IV (a)].
Patent GB-256151-A (GB)
Title: An improvement in or in connection with light wooden boxes
IPC: B65D6/00
Filed: 1926-03-18
Abstract: 256,151. Burton, T. March 18, 1926. Lined boxes; bands, strengthening; lids. - A light box for flowers &c. is formed from a pair of veneer blanks X which are scored to form a bottom and two walls and which are placed at right angles one upon the other, the walls being held in the erect position by a wooden, metal, &c. board or rim Y and by a stay J which spans the top of the box. The box is provided with a lining comprising either a pair of channel-shaped strips E, G which fit within the walls of the box, or from strips corresponding in length to the walls and having dovetailed interengaging ends. The lid comprises a blank Z similar to those forming the body, and a pair of channel-shaped overlapping strips 0 secured to the downturned ends of the blank and forming flanges which embrace, the walls of the box.
Patent GB-380852-A (GB)
Title: Improvements in and relating to cranes
IPC: B66C23/90
Filed: 1931-12-11
Abstract: 380,852. Jib cranes ; weighing-apparatus. REID, J., 9, Beechwood Gardens, Calder Road, Mossend, Lanarkshire. Dec. 11, 1931, No. 7480. [Class 78 (iv).] A jib crane is provided with a load indicator and a radius indicator l, and the mechanisms which operate these two indicators are both connected to a member which gives a warning signal or prevents operation of the crane, or does both, when the safe load is exceeded at any angle of the jib. As shown, the load rope passes round pulleys f, g and the pulley g is moved in guides on the mast against the action of a spring h. The movement of the pulley g is transmitted through a rod i2 and lever i<3> to the pointer j which moves over a scale to indicate the load. The angular movement of the jib is transmitted through links k, k<1> and lever k<2> to a pointer l moving over a scale to indicate the angle of the jib or the radius. A pawl m pivoted on the mast is actuated by a stopp which is pivoted on a rod q carried by the movable pulley g and is movable on its pivot by a pin-and-slot connection with the link k. Normally the stop p holds the pawl clear of the winding-gear, but under overload conditions the stop moves and permits the pawl to engage the teeth of the wheel p<1> and prevent operation of the crane. The arm n of the pawl carries a contact to engage a contact on the stop p before the pawl drops and to close a bell circuit. Alternatively, the mechanism may be arranged to cut out the motor of an electric crane or to cut off steam ; the load indicator may be operated by a spring-loaded pulley bearing against the load-rope ; and the radius indicator may be operated by a chain connected with jib, passed over a sprocket wheel, and held taut by a weight.
Patent GB-588757-A (GB)
Title: Improvements in or relating to reversible feed mechanism for sewing machines
IPC: D05B27/22
Filed: 1945-03-24
Abstract: 588,757. Sewing-machines. SINGER MANUFACTURING CO., Ltd. and HEGGIE, J. March 24, 1945, No. 7505. [Class 112] Feed, reversing.-In a sewing-machine having a four-motion feed-dog actuated in the usual way from a feed rock-shaft 10 and a feed-lift rock-shaft 14, the shaft 10 is actuated by means of an arm 18 thereon carrying the follower which engages a curved slot in stationary guide-block 21, the guide-block being mounted on an axis 23 parallel to the rock-shafts and being adjusted about this axis to reverse the direction of feed. In the arrangement shown the follower 17 comprises a two-armed member pivoted to the rockshaft arm 18, one arm carrying a roller engaging the guide-block 21 while the other is connected to the feed-actuating pitman 15. In the normal position shown, for forward feed, the slot of the guide-block is concentric with the shaft 10, so that the follower 17 is in effect rigid with the arm 18. To reverse the feed, the guide block 21 is tilted clockwise by depressing a plunger 26 which is pivoted to the middle joint of a toggle linkage connecting the guide-block 21 with a fixed pivot 31; a spring 32 attached to one toggle link restores the mechanism to the normal position when the plunger 26, or a detent which may be provided to hold it down, is released.
Patent GB-1040102-A (GB)
Title: Presses
Inventor: COLEY SAMUEL ERNEST
IPC: B30B1/12
Filed: 1964-02-22
Abstract: 1,040,102. Presses. COLEY BROS (TOOLS) Ltd. Feb. 26, 1965 [Feb. 22, 1964], No. 7507/64. Heading B5F. In a press comprising a base 10, an upstanding frame 11, and a ram 22 which can be reciprocated by toggle mechanism acting between the ram and an upper part of the frame, the ram is guided by a pin and bush assembly 25, 24 mounted on the ram and on the base. The toggle mechanism comprises an adjustable link 18 pivoted to flywheels 15 rotatable about a shaft 14 by a crank 30 and handle 29. The flywheel may be weighted (as at 43, Fig. 3, not shown) to assist in the upward movement of the ram. Upward movement of the ram may be braked by the engagement of a cam surface 38 (Fig. 5, not shown) on one of the flywheels with an adjustable rubber braking pad 41. The ram may be held in its raised position by a spring-pressed catch 32 (Fig. 2, not shown) engaging a recess 33 in the periphery of one of the flywheels. In a modification (not shown), the press is operated by a pneumatic piston and cylinder assembly.
Patent GB-356685-A (GB)
Title: Improvements in and relating to blast pipes for locomotives and other steam engines
IPC: F23L17/16
Filed: 1930-03-07
Abstract: 356,685. Blast apparatus for locomotives &c. GALLEZ L'HOIR, F., Valencia, Spain. March 7, 1930, No. 7523. Convention date, April 19, 1929. Void [Published under Sect. 91 of the Acts]. [Class 51 (i).] Blast pipes b of locomotives &c. are cylindrical in form and the exhaust aperture d is formed by an annular diaphragm c secured by a clamping ring e.
Patent GB-1394470-A (GB)
Title: Conduit comprising means for sealing off the conduit in  case of rupture
IPC: F16L29/00
Filed: 1973-02-15
Abstract: 1394470 Preventing pipe leakages; pipe joints INDUSTRIEELE HANDELSCOMBINATIE HOLLAND NV 15 Feb 1973 [21 Feb 1972] 7555/73 Headings F2P and F2G A valved pipe joint which disconnects at a certain tensile force is provided in a pipeline to prevent rupture of the pipe and spillage of fluid. Valve members 29, 30 are urged closed by biased levers when flange-connecting members 28 break. In one embodiment, as shown, pipes 16, 17 are connected by flanges 22, 27 and by a sleeve 23 sealed and slidable on the pipe 16 and secured to the flange 22. The sleeve 23 meets initial tensile force between the pipes 16, 17 but the connecting bolts 28 shear at a certain value whereupon the sleeve 23 and flange 27 slide on the pipe 16. Rod sections 33, 34, 34a which normally hold the valves 29, 30 open against stops 31, 32 disengage from each other and the valves close under the influence of hydraulic devices (not shown). The slidable sleeve 23, into which fluid can flow through slots in a portion 20 of the pipe 16, enables the valves to close before complete separation of the pipes. In another arrangement this sleeve is omitted, the pipes are connected by a simple flanged, butt joint (Fig. 1, not shown) and the valves are spring-urged.
Patent GB-575978-A (GB)
Title: Screws
IPC: F16B23/00
Filed: 1944-04-24
Abstract: 575,978. Screw-drivers. DEHN, F. B., (Phillips Screw Co.). April 24, 1944, No. 7581. , [Class 61 (iii)] [Also in Groups XXII and XXV] A driver, for engaging recesses in screw heads of the type comprising alternate ribs 4 and grooves 6, the side walls 9 and the faces of' the ribs and the bottoms of the grooves tapering uniformly towards the screwaxis, is identical in shape with the punch that has sharp edges 11. The shape enables the driver to be wedged more securely in the screw.
Patent GB-668978-A (GB)
Title: Method of reforming gaseous hydrocarbons and apparatus therefor
IPC: C01B3/46
Filed: 1950-03-27
Abstract: <PICT:0668978/III/1> A cyclic reforming process for the production of a gas rich in hydrogen and carbon monoxide from a hydrocarbon gas such as natural gas comprises, in one part of the cycle, passing hot combustion gases serially through a heat storage bed and a catalyst bed and, in another part, passing natural gas with steam through the heat storage bed wherein the mixed gases are preheated, and then through the catalyst bed wherein the reforming of the gases occurs. The process is carried out in apparatus consisting of a refractory lined shell 1 provided with two arches 16 and 17, the lower arch supporting a bed 15 of refractory material and the upper a mass 4 of catalytic material, for example, metallic nickel deposited on alumina.  The process is started by admitting oil or gas through line 5 and air through line 6 so that the fuel burns, the hot gases heating the beds 4 and 15 to about 1600 DEG F. and escaping through stack 7.  After a steam purge, hydrocarbon gas and steam are admitted through lines 8 and 9, air also entering through line 10 to maintain the operating temperature.  The gases are preheated in bed 15 and react in bed 4 to give a gas rich in hydrogen and carbon monoxide, which discharges through line 11.  In an example, natural gas was reformed to give a gas containing 40.7 per cent hydrogen and 12 per cent carbon monoxide.
Patent GB-557853-A (GB)
Title: Improvements in or relating to furnace wall tubes
IPC: F23M5/08
Filed: 1942-06-04
Abstract: 557,853. Alloy steel. BABCOCK & WILCOX, Ltd. June 4, 1942, No. 7602. Convention date, Aug. 6, 1941. [Class 82 (i)] [Also in Groups XII and XXII] A furnace wall or baffle tube 13, Fig. 4, has a flat tangential face formed by welding longitudinal bars or strips 14 to the front of the tube, the space in the face between the bars or strips being filled in with weld metal. Bars of square, rectangular or polygonal cross sections are placed in edge contact with the tube and secured by weld metal at the back and front. Weld metal is deposited between inclined strips 32, Fig. 10, which are held against a tube during welding by chill bars 34. The bars are made up of alloy steel having the composition C 0.15 per cent., Mn 0.5 per cent., S 0.03 per cent., P 0.03 per cent., Si 1.0 per cent., Cr 6.5-7.5 per cent., Mo 0.45-0.65 per cent.
Patent GB-588028-A (GB)
Title: Improvements in or relating to stropping apparatus for razor blades
IPC: B24D15/08
Filed: 1945-03-27
Abstract: 588,028. Razor-blade sharpeners. HILL, F. A. ARTHUR-. March 27, 1945, No. 7662. [Class 60] A device for stropping single or doubleedged razor blades comprises a case A at one end of which a non-slidable lid B is hinged, on the underside of which is secured a single strop D ; a blade carrier K is set transversely in the case to traverse to-and-fro the case's entire length to draw an edge of the blade E along the strop, the carrier being made to turn a part of a revolution at the end of each stroke and to complete a whole revolution at the end of every four strokes by a U-shaped handle O, which pierces one end of the case to connect at its open ends with the blade carrier by means of spring clips, the handle to be operated from outside the case. The blade carrier K has rigidly fixed to both ends lozenge-shaped blocks G, sliding on guideways F on the inner faces of the long sides of the case A. The guideways F have cam-surface H, J, Fig. 3, which rotate the blocks G and thus the carrier K at the end of each stroke to present a fresh blade surface to the strop D which is mounted on flat springs C in the lid. For single edged blades the body of the carrier K may be formed with a longitudinal channel to receive the base of the holder. The carrier K may be magnetised.
Patent GB-876623-A (GB)
Title: Improvements relating to bladed drum-shaped rotors for flow machines
IPC: B23P15/00
Filed: 1957-07-02
Abstract: 876,623. Making rotors. FIRTH CLEVELAND Ltd. July 2, 1957 [Dec. 7, 1956], No. 7663/61. Divided out of 876,611. Class 83 (2). [Also in Group XXVI] A disc of sheet metal is sheared to the shape shown in Fig. 3. Subsequently (or partly during the shearing) bends are made along the dotted lines 11<SP>1</SP> to bring the strips 5<SP>1</SP> at right angles to the plane of the inner part 10<SP>1</SP>, as shown in Fig. 4, to form a rotor portion having a back plate 101 and longitudinally extending blades 51. As shown in Fig. 4, a complete rotor can be formed by assembling two such rotor portions with their blades 5<SP>1</SP> interdigitated and with tabs 30 engaging holes 31, the tabs 30 being deformed to hold the rotor portions together. One of the rotor portions may be replaced by a disc provided with holes 31 to engage the tabs 30 of the remaining rotor portion. In a simplified embodiment, in which tabs 30 and holes 31 are omitted, a single portion constitutes a complete rotor. The rotor may be used in a transverse flow blower or pump such as described in Specification 876,611.
Patent GB-471930-A (GB)
Title: Control of chemical reactions
IPC: B01J8/02
Filed: 1936-03-13
Abstract: <PICT:0471930/III/1> <PICT:0471930/III/2> In effecting catalytic reactions in a converter having conduits for temperature-controlling fluid in indirect heat exchange with the catalyst as described in the parent Specification, the reactants are admitted at substantially reaction temperature and heat-conducting elements are disposed in all parts of the contact mass to convey heat to or from the said conduits.  The invention p  is applicable to endothermic or exothermic reactions, e.g. ammonia synthesis sulphur trioxide production, and catalyst regeneration. The outlet conduits D, Fig. 2, which enclose the heat-exchange fluid conduits 12, 13 may have straight pins 19 and pins 20 having outwardly flaring portions 20b, 20c which embrace the inlet conduits E.  In a modification, Fig. 3, the pins 20a terminate in perforated arcuate members 20d having ends which interengage to form complete conduits Ea for egress or admission of reactants. Specifications 414,779, 430,174, 456,091, 470,976, and 470,977 are referred to.
Patent GB-342932-A (GB)
Title: Apparatus for the manufacture of cardboard and the like in continuous webs
IPC: D21F9/00
Filed: 1930-03-10
Abstract: 342,932. Cardboard &c. in continuous webs. ENGEL, A., 3, Piazza Dante, Bergamo, Italy. March 10, 1930, No. 7734. Convention date, March 12,1929. [Class 96.] In apparatus for the production of a continuous web of cardboard, thick paper or the like from a layer of fluid pulp, the pulp is delivered from a tipping trough 37, Fig. 3, on to an endless band 3 and pressed thereon between a lower plate 1 which is preferably perforated and an upper plate 2 provided with spring-mounted limiting members 10, 5 and having a turned-up rear end forming with the member 10 an arch 8 in which the excess pulp 39 is collected. This excess forms a ridge 40, Fig..4, and prevents the fresh pulp fed from the trough 37 from flowing on to the pressed sheet during the separation of the plates 1, 2 and the forward movement of the endless band 3. The plate 2 is lifted and lowered by a double acting piston 15 and rod 14 working in a compressed air cylinder provided with suitable valves, a glycerin regulator comprising an auxiliary piston 22 provided with two bores acting as a brake on the piston 15. The sheet produced is wound at 36. The drainage liquid from the pulp is collected in a vessel 29 and the endless band 3 is washed at 30 and the wash water collected at 31.. A roller 33 and scraper 34 prevent the escape of the pulp backwards.
Patent GB-450083-A (GB)
Title: Improvements in or connected with means for attaching fabric coverings to the metal structure of aircraft frames
IPC: B64C3/26
Filed: 1936-03-14
Abstract: 450,083. Covering aircraft components. SHORT BROS. (ROCHESTER & BEDFORD), Ltd., and CLARKE, A. W. S., Seaplane Works, Rochester, Kent. March 14, 1936, No. 7741. [Class 4] Fabric coverings are attached to aircraft structures by forming the structure with a series of grooves 2 and leaving parts 5 between the grooves flush with the outer surface of the structure to form flat bridge parts under which a fabric retaining member 7 is passed to lie wholly within the grooves. In one form, the series of grooves 2 are made by splitting the web of a rib boom between holes 3, 4. The fabric is applied to the outside of the boom and portions of it are depressed into the openings; a wire skewer 7 is then passed through the openings, between the warp and the weft of the fabric, and under the portions 5 of the web. An adhesive strip is then applied along the line of attachment to the boom. In a modification, fabric covers are secured in like manner to the flanges of a plate rib.