baber/WOPTO huggingface dataset:
Patent GB-1272095-A (GB)
Title: Improvements in and relating to electrochemical cells
Inventor: GREGORY DEREK PETER
IPC: H01M4/86
Filed: 1969-03-21
Abstract: 1,272,095. Electrode structure. ENERGY CONVERSION Ltd. 12 March, 1970 [21 March, 1969], No. 14879/69. Heading H1B.  An electrode structure particularly for a fuel cell or a metal/oxygen (air) cell comprises a layer of electrochemically catalytic material for reaction with a liquid electrolyte located on one side of a layer of hydrophobic material, preferably P.T.F.E., permeable to gases and substantially impermeable to liquid electrolyte and a layer of vapour permeability control material located on the other side of the hydrophobic layer, the whole arrangement being such that the evaporation rate of the layers is less than 0À12 grammes per hour per 20 sq. cm. The said control material may be emulsion paint, unplasticized microporous polyvinylchloride, porous filter paper, porous nickel sheet, inorganic particles plus a binder, e.g. TiO 2 -filled paint, sintered ceramic sheet or porous felts, organic or inorganic.
Patent GB-901070-A (GB)
Title: Improved support for mine roadways
Inventor: FLIGHT EDGAR JOHN
IPC: E21D11/24
Filed: 1960-04-28
Abstract: 901,070. Tunnels. EXPANDED METAL CO. Ltd. April 26, 1961 [April 28, 1960], No. 15020/60. Class 85. A roof support for mine roadways comprises an arch structure built up of units 1, 2, each consisting of metal sections 4, 5 secured to a sheet 7 of expanded metal. An intermediate I-section 6 is fired to the sheet between the channel sections 4, 5, and bracing bars 8 are connected to the I and channel sections. The lower ends of the units 1 may have channel stiffening 12 to which adjustable legs 11 are attached. Units 1, 2 are joined by fish-plates 3 to form an arch and adjacent arches are connected by bolts passing through holes 10. The units 2 have joints 15 permitting limited yielding under load.
Patent GB-798762-A (GB)
Title: Process and arrangement for the distribution and the regulation of the heating fluidin bakers' ovens, pastry ovens and the like
IPC: A21B1/48
Filed: 1956-05-15
Abstract: 798,762. Baker's ovens. ATELIERS DE CONSTRUCTION GUILLAUME OOMS SOC. ANON. May 15, 1956 [March 30, 1956], No. 15098/56. Class 51 (2). In a bakers' oven heated by ducts 6 and 7 comprising the top and bottom of the baking space 8, hot gases generated in a combustion chamber 1 are driven by a fan 2 to a damper 9 which delivers them alternately at timed intervals to flues 4 and 5 feeding the ducts 6 and 7 respectively. The damper 9 is actuated periodically by a reversible motor 11 controlled by a change-over switch 12 incorporating an electro-magnetic device 13, the operating circuit of which is controlled by a cam 17 operating a switch 19 and driven by a motor 14 through worm gearing 15, 16. The heating gases are diverted from the flues 4 and 5 back to the combustion chamber 1.
Patent GB-945494-A (GB)
Title: Improvements in or relating to methods of producing joints between carbon electrodes and joints produced by such methods
Inventor: KAUFMANN WALDEMAR
IPC: H05B7/14
Filed: 1960-04-29
Abstract: 945,494. Furnace electrode joints. SIEMENS-PLANIAWERKE A.G. FUR KOHLEFABRIKATE. April 29, 1960 [April 30, 1959; Jan. 12, 1960], No. 15199/60. Heading H5H. [Also in Division C3] A method of coaxially joining two carbon electrodes 1, 2 by means of a cemented doubleconical nipple plug 4 in screwed engagement with respective rockets 3, 4 of the electrodes includes the steps of placing a given dosage of cement 8, 9 wrapped in a readily destroyable envelope into the socket space of the electrodes, subsequently joining the electrodes by screwing them together with the nipple plug, and finally subjecting the joint to conditions which are such as to destroy the envelope. The nipple 4 is provided with four longitudinal grooves 12, and the end faces of the electrodes have radial grooves 13, 14. The envelope may be of polyethylene foil or gelatine. The cement contains pitch, a synthetic plastic material, e.g. a resin, which thermally hardens prior to carbonization of the pitch, granular solid material, e.g. coke, graphite powder or silicides of titanium or iron, and a swelling agent, e.g. hydrazide of benzene-sulphonic acid or ammonium phosphate. The envelopes may be ruptured by screwing the electrodes tightly together and are then destroyed by thermal and/or chemical action. The carbon surfaces to be cemented are preferably pre-impregnated with a catalyzer, e.g. chloranil or phosphoric acid which attacks the envelope and promotes hardening of the cement. An insulating gasket of paper or synthetic plastic material may be provided between the end faces of the electrodes to force the current during the first few minutes of furnace operation to pass entirely through the nipple 4, thus causing a rapid heating of the cement. The gasket is at the same time carbonized and becomes conductive.
Patent GB-1384959-A (GB)
Title: Pressure wave machines
IPC: F02B33/42
Filed: 1972-03-30
Abstract: 1384959 Pressure exchangers BBC BROWN BOVERI & CO Ltd 30 March 1972 [2 April 1971] 15230/72 Heading F1N To match the performance of a pressure exchanger to a particular application the end housings 1, 2 thereof are provided with removable end plates 11, 16, whereby different sized rotors 4 can be fitted and either the inlet and outlet orifices in the end plates modified to suit or replacement end plates with the required orifices fitted. The rotors are of the same axial length, their cross-sections being determined by the size of their hubs 4 or their shrouds 6.
Patent GB-240219-A (GB)
Title: Improvements relating to gramophones and other sound reproducing apparatus
IPC: G10K13/00
Filed: 1924-06-24
Abstract: 240,219. Frey, J. June 24, 1924. Sound-boxe,s and horns, arranging and supporting. -A gramophone soundbox A is mounted on a partition B in a horn C. Sound emitted from one side of the diaphragm of the sound - box passes through a hole F in the partition into the chamber E of the horn, while the chamber D receives sound from the other face of the diaphragm. The horn is supported at G. The horn and partition may be made of wood, the horn being of truncated pyramidal shape, preferably with unequal walls.
Patent GB-920096-A (GB)
Title: Improvements in or relating to dental handpieces
IPC: A61C1/05
Filed: 1960-04-29
Abstract: 920,096. Dental handpieces. R. A. WHITE. April 29, 1960, No. 15243/60. Class 81 (2). [Also in Groups XXVI and XXVIII] The head of a dental handpiece includes a tool driving shaft Y which is rotatably mounted along the axis of the head and is driven by a fluid-operated engine comprising a stator A which receives fluid entering an inlet port at an angle to the axis of the head and directs it axially of the head and a rotor B carried by the shaft. The stator A comprises an annular channel 42 disposed circumferentially against the internal bore of the head, compressed air passing through a port 44 being delivered through openings between blades 48 fixed to the channel. The compressed air flows from the channel upwardly and radially inwardly and then downwardly through diverging channels formed between pitched blades 61, 62 of the rotor, which is thus caused to rotate, and is exhausted through a port 65 in the head into a duct 118 in the handpiece. The shaft Y is inserted through the lower part of the head and has a slot which after engagement with a pin 29 fixed to the rotor receives a plug 31, the rotor and shaft thus being secured together. The shaft rotates in bearings 14, 15 and has on its lower part rings 67 which engage with rings 66 on the lower part of the head to form a labyrinth seal preventing the escape of air exhausted from the rotor. The tool T is fitted into a bore 26 in the shaft, relative rotation being prevented by a shoulder 28 on the shaft engaging a corresponding recess in the tool. The tool is prevented from slipping out of the shaft by a stop 87 which engages a groove in the tool, the stop being carried by a yoke-shaped lever 81 which surrounds the shaft and is pivotal on a ring 80 attached to the shaft. The lever 81, which is of greater weight on the side remote from its pivot is normally held by its weight and a spring 83 in a horizontal position so that the stop secures the tool. For release of the tool an operator sleeve 82 at the bottom of the head is unscrewed so that it engages a lug 88 which tilts the lever and the stop against the spring thus disengaging the groove in the tool. The rotor may be braked as desired on pressing a plate 71 at the top of the head against a spring 72, brake blocks 70 attached to the plate then engaging the flat annular top surface of the rotor. A connector S (Fig. 10) for a flexible tube 124 is rotatably secured to the end of the handpiece remote from the head by balls 108 held between opposite channels in the connector and the handpiece. This end of the handpiece is of stepped formation and engages in a stepped bore in the connector to define annular or cylindrical chambers 113, 116 and 104. The chambers interconnect ducts 119, 121 and 118 in the handpiece with corresponding passages in the flexible tube for the supply of compressed air for driving the rotor and cooling the tool and for the exhaust of air from the rotor.
Patent GB-801988-A (GB)
Title: Improvements in reciprocating internal combustion engines, steam engines and compressed air engines
IPC: F01B17/04
Filed: 1955-05-27
Abstract: 801,988. Engine construction. WATERVAL, W. May 27,1955, No. 15378/55. Classes 7(2) and 7(3) [Also in Group XXVI] General construction. A cylindrical jacket 12, Fig. 1, which is mounted upon the crankcase 10, has an annular partition 15 disposed coaxially therein so forming an inner cylinder 22 and an annular cylinder 24 each having a piston 25, 26, respectively, therein; the cylinders are closed by a head 19 bolted to the jacket and partition. The pistons 25, 26 are connected to a common crankshaft 28 through connecting rods 31, 32 with 180 degrees phase displacement, the annular piston 26 having two rods 32 arranged near the ends of that piston diameter which is parallel to the crankshaft. In the two-stroke engine shown, piston controlled inlet and exhaust passages 39 and 40, Fig. 2, in the jacket 12, Fig. 1, serve both cylinders, although the inlet to and exhaust from the inner' cylinder requires the additional provision of passages 48 through the annular piston. Three fuel injectors 35 and 50 are located in the head as shown, the injectors 50 being aligned with the rods 32 and having a combined delivery equal to the delivery of the injector 35. In a four-stroke engine the inlet and exhaust are effected through valves in the cylinder head. The fuel injectors are replaced by sparking plugs if the engine is to function on the Otto cycle; the engine may be double-acting, or have more than one cylinder unit. Coolant. Coolant passageways 59, 60, and, 61 provided in the jacket, partition and head respectively, are interconnected by channels 62 in the head. The piston 25 is cooled by lubricant traversing a duct 75a in the connecting rod 31, a duct 91 in the cross head 86 and a tube 90 before flowing into the hollow piston head 25b; the lubricant drains from the latter into the crankcase via a tube 92 and a duct 94. Piston, construction. The piston 26, Fig. 5, comprises four annuli 26a, 26b, 26c and 26d with a cap 26e, the five members being secured together by a tie 65; the annuli 26b and 26d carry the inner and outer piston rings 66, 66a and 68, 68a, respectively The annuli 26b, 26c and 26d are formed with voids to reduce weight. The main piston has piston rings 84, 85 and both pistons are provided with cross heads which facilitate dismantling thereof. Lubricating. The outer piston is lubricated by forcing oil through a crankshaft passageway 74, Fig. 1, from whence it flows through passages 75, 76 and 78 in the rods 32, wrist pins 34 and the bottom annuli 26a respectively; ducts 79, Fig. 5, between the piston annuli enables the lubricant to flow into all the piston parts especially round the exhaust passages 48. Oil also flows through holes 80 and 81 with check valves, not shown, to the piston rings. The oil may enter the piston assembly through one rod and leave through the other. The inner piston may be similarly lubricated.
Patent GB-110615-A (GB)
Title: Improvements in Appliances for Burning Off Paint and the like.
IPC: B44D3/16
Filed: 1916-10-28
Abstract: 110,615. Benham & Sons, and Allensby, C. R. Oct. 28, 1916. Paints, removing.-An electric heater consists of a sheet metal holder comprising a top plate a and sides b between which flat heating elements e are mounted and connected to a plug m. The sides b are connected by wires c. The handle j is covered with string s and the plate a is covered with asbestos &c. sheets k, l.
Patent GB-673855-A (GB)
Title: Improvements in or relating to electric lighting fittings
IPC: F21S8/00
Filed: 1949-06-09
Abstract: 673,855. Subaqueous lamps. GENERAL ELECTRIC CO. Ltd., and HUBBOLD, S. June 9. 1950 [June 9, 1949], No. 15431/49. Class 75(iv) An electric floodlight for underwater use comprises a hollow inner member 10 containing an electric lamp 11 and having an open top for the emission of upwardly directed light, and a cover member 12 arranged over the inner member so that when the floodlight is submerged water enters between the members but does not enter the inner member, the cover member being made of material impervious to air and water and being transparent or translucent at its upper part at least. The inner member 10 is of cylindrical shape its open top being inclined to the horizontal and the lamp 11 is mounted on the base of the cylinder offset from the axis towards the long side. A bowl shaped reflector 17 surrounds the lamp and a screen comprising strips of clear or coloured glass 20 in a copper frame is fitted to the open top of the cylinder. The dome shaped cover 12 is made of " Perspex " (Registered Trade Mark) and its rim is bolted to a flange 13 on the base of the inner member 10. Holes 26 in the flange 13 allow water to enter between the two members. The electric cable passes through one of the holes 26 and through a hole 30 near the top of the inner member 10. In another embodiment the cover member comprises a metal cylinder having its upper end closed by an armoured glass plate and a baffle is mounted on the inside of the inner member to promote air circulation. The cover membe may have the form of a prism and it may have a dependent skirt on its lower end.
Patent GB-462112-A (GB)
Title: Improvements in or relating to agglomerates having a base of asbestos and cement
IPC: C04B28/02
Filed: 1935-05-27
Abstract: Pellets or nodules, 1/4 inch to 2 inches in diameter, are made by intimately mixing comminuted asbestos (20), cement (150), sands (45), and colouring matters (20), for example in the proportions given in brackets, and then introducing water into the mixture while stirring; the pellets are moulded by presses or rams into desired shapes, and immediately removed from the moulds. Using the above proportions the amount of water added must be 24 per cent by weight of the dry mixture if the pellets are to be rammed, or 8 per cent if they are to be press-moulded.
Patent GB-479180-A (GB)
Title: Improvements in tube cleaning apparatus
IPC: B08B9/04
Filed: 1937-06-03
Abstract: 479,180. Tube cleaners. LJUNGBERG, H. J. W. June 3, 1937, No. 15446. Convention date, June 6, 1936. [Class 99 (ii)] A tube cleaner comprises a number of scrapers D which are pivoted to a non- axially movable carrier C rotatable on a shaft A in such manner that they tend to move outwards when the cleaner is pulled or pushed through a tube during a working stroke. This outward movement is limited by an adjustable sleeve G which is screwthreaded on the shaft A and is formed with a shoulder H for engagement by a loosely-mounted second carrier F connected to the scrapers D by links E. The scrapers D, which overlap in the manner of roof-tiles when in their inoperative position, consist of convex or arched plates each having a longitudinal flange D<1> extending radially from the centre thereof, the scrapers and flanges terminating in knife-edges J.
Patent GB-715172-A (GB)
Title: Process for the production of hydrocyanic acid
IPC: C01C3/00
Filed: 1952-06-19
Abstract: <PICT:0715172/III/1> Hydrocyanic acid is produced in a cyclic process wherein alkali metal carbonate is reacted with carbon and nitrogen in the presence of an iron catalyst (the Bucher process) and the reaction product consisting of alkali metal carbonate and cyanide with unreacted carbon and iron, is extracted with water, and this aqueous extract is treated with warbon dioxide and steam at 150-300 DEG C. to produce sodium carbonate, which is recycled to the cyaniding stage, and hydrocyanic acid.  The residue left after the aqueous extraction may also be recycled as shown in the Figure, sodium cyanide solution from the aqueous extraction of the cyaniding stage reaction product, is alomized in a nozzle 2 by carbon dioxide under pressure supplied to an annular passage 2a, which is in turn surrounded by a further passage 3 through which carbon dioxide is circulated from conduit 9.  The atomized spray enters a tower 4 maintained at 150 to 300 DEG C.  Solid sodium carbonate is deposited at the floor of the tower and hydrocyanic acid with excess carbon doxide and steam pass through cooling coil 5 where the water condenses to a water-washing tower 6 where the hydrocyanic acid is removed as aqueous acid at 7.  The carbon dioxide is recycled by conduit 9.  The temperature of the decomposition tower may be maintained by external heating or by tangentially arranged gas burners inside the tower, supplied with the waste gas from the cyaniding stage consisting of carbon monoxide and nitrogen, and air, the carbon dioxide thus produced serves to decompose the atomized cyanide solution.  The effluent gases after removal of steam and hydrocyanic acid consiting of carbon dioxide and nitrogen may after removal of carbon dioxide, be recycled to the cyaniding stage. Alternatively the aqueous extract may be evaporated to dryness in vacuo at temperatures below 550 DEG C. and thereafter decomposed by means of carbon dioxide and steam at 150-300 DEG C. in a rotating drum to free hydrocyanic acid and form alkali metal carbonate which is recycled.
Patent GB-467766-A (GB)
Title: Improvements in and relating to locks
IPC: E05B37/00
Filed: 1936-06-03
Abstract: 467,766. Locks. WASSENHOVE, A. June 3, 1936, No. 15516. Convention date, July 19, 1935. [Class 44] A combined latch and lever lock has also permutation discs or rings for controlling the lock which are adjusted by the same key that actuates the lock bolt and the latch bolt, the key for this purpose being inserted into separate keyholes where it can act only on one disc at a time. A latch bolt 3 and locking bolt 5 are mounted in the same casing, the bolt 5 carrying a lever 7 which is engageable by the key to with - draw the latch when the bolt 5 is in its withdrawn position. The bolt 5 has an extension 11 carrying two prongs 12 which co-operate with two notched discs 13, 13<1> connected to larger discs 14, 14<1> mounted on a fixed spindle 16. Each disc 13, 13<1> has a pin 18 which can be engaged with any of a series of holes 17 in the corresponding disc 14, 14<1> in order to vary the combination. Each disc 13, 13' has a single deep notch 19 into which the prong 12 can enter when set to the correct position and each disc 14, 14<1> has a series of equal notches 22 and one shallower notch 23. The disc 14<1> is set by inserting the key in the lower end of the same keyhole 8 as is used for the main bolt and turned a number of times, each turn moving the disc one notch. A plate 20<1> prevents engagement of the key with the disc 14. The key is then inserted in a lower keyhole 9 and the disc 14 is turned, a plate 20 preventing engagement with the disc 14<1>. Any number of turns may be given to secure the lock and ordinarily the same number of turns in the opposite direction will be required to release it. Should this chance combination be forgotten each disc can be turned until the key encounters the shallow notch 23 which prevents further turning and the lock can then be opened by counting turns from this zero position on each disc. Springs 21 engage the notches to prevent accidental movement of the discs. To enable the lock to be used as a latch without constant resetting of the discs, the bolt 5 is left in its shot position and a hinged part 25 of the keeper, which is normally held closed by a slide 24, is released to allow passage of the bolt.
Patent GB-1122954-A (GB)
Title: Improvements relating to poppet valves
IPC: F16K1/46
Filed: 1966-04-07
Abstract: 1,122,954. Valves. E. W. E. MICKLETHWAIT (Pressure Products Industries Inc.). 7 April, 1966, No. 15595/66. Heading F2V. A movable closure member 16 is lifted when a pressure difference occurs between an inlet 18 and an outlet 32 to unseat a sealing ring 35 from a face 17 to connect the inlet and outlet via axial passages 26, radial passages and an axial bore 23. The face of the closure member 16 inwardly of the ring 35 is provided with radial grooves 36; the latter may be formed in the face 17. The passages 26 are formed by flats 21 on the inlet part of the closure-member periphery: the outlet portion 19 is cylindrical and has a sliding fit in the body bore. A spring in the bore 23 urges the closure member to the closed position. The valve may be employed as a pump inlet or delivery valve.