baber/WOPTO huggingface dataset:
Patent GB-332782-A (GB)
Title: Folding chair
IPC: A47C4/34
Filed: 1929-08-22
Abstract: 332,782. Visser, E. R. Aug. 22, 1929. Folding seats; bottoms and backs.-A folding seat comprises in combination members C constituting back and leg portions, to which are hinged at X side members I, a one-piece top rail L pivoted to one member C and detachably secured at N to the other member C, stays P, dropdown pivoted front legs J, and transverse members D, E, divided and hinged at the middle, and capable of being held in line by slip-links or sleeves F, H. The flexible detachable seating B is carried at the top by the rail L, and, at the front, carries a transverse rod R for detachable engagement with the legs J.
Patent GB-171537-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/20
Filed: 1920-09-06
Abstract: 171,537. Dwyer, W. Sept. 6, 1920. Razors, safety. A safety razor comprises a rectangular blade 5 having a plurality of cutting-edges, only one of which is exposed for use, the blade being secured upon a raised marginal portion 3<a> of a casing 3 by a rectangular clamping-plate 1 having a central boss 2 of polygonal shape upon its inner face, the boss engaging a central opening in the blade and a recess on the inner face of the casing; the parts are held together by a screw and thumbnut 11. The cutting-edge in use is disposed over a guard 8 on the casing and the adjacent edge of the clamping-plate is bevelled to permit the 'blade to be brought close to the face. The cutting-edges not in use are protected by the flange 7 extending around the sides of the casing. A forked handle 14, pivoted to tabs 12 struck up from the casing, is folded against the casing when not in use and is held at right-angles to the casing for use by a keeper 16 slidable on one arm of the handle and adapted to engage the adjacent tab 12.
Patent GB-1391826-A (GB)
Title: Nuclear reactors
IPC: G21C17/10
Filed: 1972-06-01
Abstract: 1391826 Reactors SIEMENS AG 1 June 1972 [14 June 1971] 25696/72 Heading G6C A fuel assembly for a fast helium-cooled breeder reactor (Fig. 1, not shown) comprises fuel rods 32 suspended within a hexagonalsection casing 9 from a rod-holding plate 91. The head 34 of the fuel assembly is connected, via a coupling 71, to a holding linkage 7 extending down from the reactor vessel cover. Throttle means 8 are displaceable vertically via a spindle actuated from the exterior to control the coolant inflow to the fuel assembly as a function of the coolant outlet temperature. A guide tube 33 for guiding thermocouples is disposed within the fuel assembly and apertured at its lower end, at 33a, in order that the coolant directly contacts the measuring head 6a of a thermocouple 6 adjacent its coutlet from the full assembly. The head 34 is sealed relative to a carrier plate 1 by piston rings 36 and is internally widenedout in funnel-like manner at 35 in order that the thermocouple 6, when pushed in through a tubular guideway of the holding linkage 7, can be introduced easily into the guide tube 33. As an alternative to the use of a thermocouple (or resistance thermometer), the coolant outlet temperature can be measured optically through the guide tube 33 and the tubular guideway of the holding linkage 7.
Patent GB-1019011-A (GB)
Title: Fuel injection nozzle for an internal combustion engine
IPC: F02M61/16
Filed: 1962-07-12
Abstract: 1,019,011. Fuel injectors. V. P. ROOSA. July 12, 1962 [July 12, 1961], No. 25765/62. Heading FIB. A guide member 38 for a needle valve 33 of a fuel injector is initially a loose fit and is secured to the nozzle body, after the needle has been correctly aligned, by a resin such as an epoxy resin. The lower end of the needle engages a guide face 60 on the nozzle tip 12 and the guide member 38 has threads which loosely engage in a threaded part of the bore of the nozzle body. In assembly, the member 38 is coated with epoxy resin and inserted into the body with the needle 33, which is urged against its seat during assembly by a tool with a spring-loaded plunger. The loose fit of the guide 38 permits the needle 33 to take up its correct position in the guide surface 60 while the resin is still fluid. The injector is then heated in an oven to cure the resin and permanently secure the guide 38 in its correct position and the injector assembly is subsequently completed by the fitting of the loading spring 43 with its adjustable abutment 48 and a valve lift stop 52.
Patent GB-972520-A (GB)
Title: Device for keeping the operating speed of an hydraulic jack at a constant value
IPC: F15B11/044
Filed: 1962-07-05
Abstract: 972,520. Valves. SOC. DES FORGES ET ATELIERS DU CREUSOT. July 5, 1962 [July 5, 1961], No. 25792/62. Heading F2V. [Also in Division F1] A device for keeping the operating speed of an hydraulic jack for controlling the moving member 4 of a valve at a constant speed, the jack being liable to be subjected to varying loads and having an operating speed which is a function of the cross-section of its discharge orifice, comprises a slide valve 12 which controls the flow through the discharge orifice and is movable between two positions corresponding respectively to a maximum and a minimum rate of discharge, the slide valve being subjected to a force of decreasing value in the direction of an increase in the rate of discharge, and in the direction of a reduction in the rate of discharge to the action of pressures set up in the cylinder 9 of a dashpot having a piston 8 linked to the moving member 4 governed by the jack. The jack has inlet and discharge conduits 5, 6 and a piston 2 connected by a link 3 to the member 4, and the discharge conduit has a tap 6a and leads to an annular chamber 20 in a housing 13 of the slide valve. A second annular chamber 21 is connected to an exhaust conduit 22 and flow between the chambers is controlled by the slide valve 12 which has a tapered groove 19 to control the flow through the chambers. The lower end of the slide valve is acted upon by a spring 24 and adjustable counterweight 23 urging the slide valve to a position increasing the rate of discharge from the jack, and the upper end of the spool is subjected to the pressure in a chamber 15 of the dashpot cylinder 9 which has a piston connected by a link 7 to the member 4. The piston has orifices 14 controlling the flow from chamber 15 to chamber 16 of the dashpot and additional orifices 17 and plugs 18 to permit free flow from chamber 16 to chamber 15. A diaphragm 10 acts as a base for the dashpot and is connected to valve 12. In operation, the piston 2 is raised by fluid from the supply conduit 5 to open the valve, the opening movement being uncontrolled. When the valve is to be closed, the tap 6a is opened to discharge fluid from the jack. As the piston 2 moves downwardly, the piston 8 also moves downwardly to cause pressure in chamber 15 to act on the slide valve in opposition to the force of the spring 24 and counterweight. An increase in speed of the member 4 will cause increased pressure in chamber 15 to move the slide valve to restrict the discharge from the jack, and vice versa. In an embodiment for controlling a double-acting jack, the slide valve 12 has a second groove which is the inverse of the groove 19 and the chamber 20 is alternately connected to the discharge conduits of the jack.
Patent GB-1272066-A (GB)
Title: Improvements in or relating to electric switches
Inventor: BEER DONALD COURTNEY
IPC: H01H11/00
Filed: 1968-05-29
Abstract: 1,272,066. Mechanical switches; actuators. OTEHALL Ltd. 29 May, 1969 [29 May, 1968], No. 25819/68. Heading H1N. The casing 1, Fig. 1, of a micro-switch has a rectangular opening 30 with part cylindrical opposed recesses 32 whereby the switch may be fitted alternatively with a pivoted actuator 36 having a cylindrical boss portion 31 located by the recesses 32 or with a plunger 40, Fig. 2, guided in the opening 30. The switch may be of the retractive snap-action type shown in which a cam face 34 of the lever actuator 36 engages the end 23 of the snap-action actuator 12 or the end 35 of the compression spring 13. In Figs. 1 and 2 the switch is shown in the normal position in which the spring 13 urges the actuators 36 or 40 to end positions determined by stops 39 or 41. In modifications (not shown) the cam 34 may be so shaped that it rides over the ends 23 or 35 of the actuator 12 or spring 13 to hold the switch in the set position until released by the return movement of the actuator.
Patent GB-1469783-A (GB)
Title: Limit mechanism for manual shift control lever
IPC: G05G9/00
Filed: 1974-06-11
Abstract: 1469783 Change-speed control CATERPILLAR TRACTOR CO 11 June 1974 [13 June 1973] 25903/74 Heading F2D Means to limit to one, two or more ratiosteps through which a manual selector lever 28 can be pivoted, with a support 34, during ratio selection, comprises a fixed quadrant 36 with locking notches 38 corresponding to the respective ratio settings (sixteen forward, neutral and two reverse) into which the lever 28 is laterally spring loaded about a transverse pivot 32 on the support 34, which latter, 34, carries, for relative pivotal movement about the same selecting axis as that of the lever, a second quadrant 43, having notches 47 corresponding to those 38 of the fixed quadrant, which receive a pin 48 on the lever 28 when the latter is pivoted laterally out of locking engagement with the fixed quadrant 36 prior to making a selector movement, the pin 48 then taking the second quadrant 43 along with the lever 28 in its selecting movement until restricted in either direction by stops 53, 54, whereupon the lever is released to return, under spring load laterally into locking engagement with the fixed quadrant 36, releasing the pin 48 from the second quadrant 43, which is then returned by a centralizing spring 52 back to a central position ready for limiting the next selection. Two springs bias the shift lever 28 laterally into engagement with the fixed quadrant 36, one, 41, a light spring, the other, 42, heavier, which latter must be overcome before the shift lever can be moved over a quadrant stop 39 into the two reverse settings. To override the ratio step limit, the lever 28 can be raised, against springs 74, to lift the pin 48 out of engagement with the second quadrant 43. As shown the stops 53, 54 limit each shift to two ratios steps, and to reduce the limit to a single step between ratios thirteen to sixteen, the fixed housing carries an inwardly-spring- loaded plunger 63, Figs. 3 and 5, which is thrust outwardly into a slot 68 in the quadrant 43, limiting movement of the latter to one step, by a plunger 64 thurst upwardly by a cam plate 69 which pivots with the shift lever 28 in its selecting movement and is effective in ratios thirteen to sixteen. Alternative override means, Figs. 6 to 8, not shown, comprise a retractable telescopic sleeve or rod in the lever 28, or a rod which is depressed by a push button to free the pin 48 from downwardly directed quadrant notches. The gear, Fig. 1, not shown, comprises two countershaft gears in series, the first giving four ratios and reverse, the second four ratios. A main clutch and brake are provided at both the input and output ends of the gear, and shift selection is pneumatic.
Patent GB-448599-A (GB)
Title: Method of and apparatus for the development of wells
IPC: E21B43/04
Filed: 1935-09-18
Abstract: 448,599. Wells. SCHWEITZER, R. R., and SUNDQUIST, C. R., 633, New Monroe Building, Norfolk, Virginia, U.S.A. Sept. 18, 1935, No. 25932. [Classes 68 (i) and 85] In a well with a fluid delivery strata of sand &c., sand and any mud wall formed during boring is removed hydraulically from this strata, and media such as gravel or pebbles is inserted in the space so formed to support the face of the strata and act as a filter. In Fig. 2, a casing 5, with a ring 6 provided with nozzles 7 preferably leading upwardly and outwardly, is lowered into the well bore, water supply pipes 8 being connected to the ring 6 ; a well tube 9, with screening portions 10, is then lowered and centred by guides 12, and coarse gravel &c. 15 is filled into the casing 5. Water is then supplied to the nozzles 7 to wash away the mud wall left by the drilling fluid and to wash away pockets 16 in the bearing strata, the casing 5 being slowly raised while fine gravel &c. 17 is filled in to or above the ring 6, this gravel replacing the excavated material which rises to the surface. In large wells, the diameter of the casing 5 is reduced from slightly above the ring 6 upwardly. Where the filtering medium is all of the same type, the jetting is effected by independent nozzles 29, Fig. 6, suspended from tubes 30 arranged concentrically around the well tubes. In Fig. 7, a short cylinder 39 carries the jetting ring 40 and is reinforced by one or more welded &c. tubes 44 through which water passes from one or more pipes 46 to the ring 40, and by one or more welded &c. solid members 45 connected to tubes 49 through which filtering media is passed to outlet 50 or to one or more sets of diametrically opposed outlets ; the tubes 46, 49, are connected by clamp 53 with lifting means 54 and if desired, a casing may extend upwardly from the cylinder 39 within the tubes 46, 49, and an inner coarse layer of filtering material be passed through the casing. In Fig. 11, water is supplied through conduit 107 to a head 104 with flexible preferably tapered conduits 110 which tend towards a straight position to effect under-reaming and further jets 112 at a less incline to the vertical ; The head 104 preferably has one or more lower outlets 117, and the spoil floats away or is drawn off through conduit 113 while gravel &c. is supplied through a pipe 115. Similar apparatus may be used for under-reaming the fluid bearing strata without simultaneously supplying gravel &c., the hydraulic head and particles of mud &c. in the water holding up the sand wall until the gravel &c. is supplied, which may be before or after removal of the hydraulic apparatus.
Patent GB-263465-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B21/12
Filed: 1926-10-18
Abstract: 263,465. Sulzer FrÞres Soc. Anon. Aug. 5, 1926, [Convention date]. Addition to 230,002. Water-tube boilers.-In a boiler having an overflow pipe c between the upper drum of a rear section b and the lower drum of a front section a, as described in the parent Specification, the overflow pipe is connected through a stop valve f to a point in the rear upper drum situated below the mouth d of the overflow pipe. The valve f may be automatically controlled in accordance with the water level in the front drum or in accordance with the steam pressure. The valve may, for example, be opened by a float or a thermostat when the water level in the front drum falls below a certain point.
Patent GB-260002-A (GB)
Title: Improvements in and relating to the dehydration of coal sludge
IPC: B03D1/08
Filed: 1926-10-18
Abstract: 260,002. Wolf, K.., and Wolf, K.. Oct. 17, 1925, [Convention date]. Composition fuel.- A process of dehydrating coal sludge, particularly that obtained by flotation, consists in mixing with the sludge sufficient dry coal or coke of a size of grain from 0 to 2 mm., and preferably of low ash content, to permit of briquetting the mixture without the use of binding agents, the mixture being dried by exposure to the air.
Patent GB-689598-A (GB)
Title: Improvements in or relating to a piperazine derivative
Inventor: BOON WILLIAM ROBERT
IPC: C07D295/215
Filed: 1950-10-26
Abstract: 1 - Methyl - 4 - diethylcarbamylpiperazine is prepared by the interaction of N-methylpiperazine and diethylamine, one or other of the reactants being in the form of its aryl N-carboxylate. The reaction is preferably conducted in an inert liquid medium in the presence of a small quantity of mineral acid.  In examples: (1) N-methylpiperazine is reacted with phenyl diethylamine N-carboxylate; and (2) phenyl 1 - methylpiperazine - 4 - carboxylate is reacted with diethylamine, to give the desired compound.  Phenyl carbamates.-Phenyl diethylamine N-carboxylate and phenyl 1-methylpiperazine-4-carboxylate are prepared by reacting diphenyl carbonate with diethylamine and 1-methylpiperazine respectively.
Patent GB-389528-A (GB)
Title: Improvements relating to the production of metal castings
IPC: B22D7/00
Filed: 1931-09-18
Abstract: 389,528. Casting processes. BAILEY, R. W., 20, Grange Avenue, Hale, Cheshire, ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London, and ENGLISH STEEL CORPORATION, Ltd., Vickers Works, Sheffield. Sept. 18, 1931, No. 26220. [Class 83 (i).] Moulds.-In cooling castings, as in Specification 371,371, the gas supplied is preheated by passing it through a heat-exchange apparatus, such as a coil 9, Fig. 1, or 13, Fig. 2, heated by hot gas from the top of the ingot. The volume of hot gas, passing to the apparatus, may be controlled by valves, so as to regulate the temperature of the gas supplied to the mould. For a large steel ingot this temperature may be about 450‹ C. The mould may be provided with a cover 15.
Patent GB-259768-A (GB)
Title: Improvements in strainers for straining or removing impurities from milk and the like
IPC: A01J11/06
Filed: 1925-10-21
Abstract: 259,768. Rossall, J. Oct. 21, 1925. Fitter having sheet filtering-materials : funnel filters.-A filter for milk &c. comprises two nesting cones b, d or the like of meshed material with interposed filter cloth, the three parts being extended at the base so that, when in position on a flange a<4> in a container a, an annular base b' is provided upon which impurities will collect. The structure is held in position on the flange a<4> in a recess a<3> by a split ring or other detachable fastening.
Patent GB-823973-A (GB)
Title: Improvements in and relating to rotary distributors for sewage or other liquids
Inventor: HARTLEY CYRIL JOHN
IPC: C02F3/04
Filed: 1956-08-29
Abstract: 823,973. Rotary distributers. HARTLEYS (STOKE-ON-TRENT) Ltd. Aug. 28, 1957 [Aug. 29, 1956; Nov. 22, 1956], Nos. 26335/56 and 35707/56. Class 69 (3). A rotary distributer for sewage or other liquids comprises an electric motor mounted at the outer end of one of the distributer arms and connected with a traction wheel or roller which is free to adapt itself to inequalities in the level of a track on which it runs. As shown, a distributer arm 15 carries a base-plate 20 with an electric motor 21, the output shaft 22 of which drives a traction wheel or roller 34 through a coupling 23, shaft extension 24, spur wheels 25 and 30, countershaft 29 and a chain 35 on sprockets 36 and 37, the wheel or roller 34 being mounted on a trailing arm 32 pivoted to the countershaft 29 and carrying an adjustable weight 38. The spur wheels 25 and 30 and the sprockets 36 and 37 can be changed to give any gear ratio. The base-plate 20 is pivotally mounted on the distributer arm to allow radial setting of the wheel or roller. The weight of the driving unit is counterbalanced on the opposite distributer arm. The second Provisional Specification also refers to an arrangement with a water wheel as the driving means.
Patent GB-804690-A (GB)
Title: Ice cube tray
IPC: F25C1/24
Filed: 1957-08-21
Abstract: 804,690. Ice - making. ANSEL, H. R. Aug. 21, 1957, No. 26411/57. Class 29 In an ice tray having longitudinal and transverse grid members, the members in one direction are integral with the tray and, in the other direction, with a cover, the members at their intersection interfitting by notches. As shown, the tray 10 has a longitudinal member 18 and the cover 12 a plurality of transverse members 32 each having a notch 50 mating with member 18, the top of which abuts a groove 40 formed in a longitudinal bar 34 fixed to the cover. The members 18, 32 taper upwards and downwards respectively. The device may be made of plastic material.
Patent GB-705836-A (GB)
Title: Improvements in or relating to forced flow tubular boilers
IPC: F22B29/06
Filed: 1950-10-30
Abstract: 705,836. Forced-flow steam boilers. SIEMENS-SCHUCKERTWERKE AKT.- GES. Oct. 30, 1950 [Oct. 27, 1950], No. 26459/50. Class 123(2) In a forced-flow tubular steam boiler, such as that described in Specification 420,759, in which that part of the tubing where steam is actually generated is divided into two portions, the first portion, in which water predominates over steam, being subjected to a higher heat intensity, preferably mainly by radiation, and the second portion, in which steam predominates, to a lower intensity, preferably by contact heating, said second portion is maintained at a temperature which ensures that interaction between any oxygen in the steam and the tubing thereof is obviated, for example, by limiting the temperature of the heating gases to 750‹C.
Patent GB-841134-A (GB)
Title: Improvements relating to amplifiers
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H03F1/20
Filed: 1955-09-16
Abstract: 841,134. Pulse shaping networks. ELECTRIC & MUSICAL INDUSTRIES Ltd. Sept. 7, 1956 [Sept. 16, 1955], No. 26518/55. Class 40(8). [Also in Group XL(c)] A pulse is amplified by first increasing its duration by passing it through a filter so that its frequency components are delayed by different amounts in dependence on their frequency; the broadened pulse is then amplified and the output of the amplifier is narrowed by passing it through a passive network. Fig. 1 shows an amplifier for narrow pulses of large amplitude in which the pulse is broadened by passing it through 3 bridged-T filter sections A, B, C. The phase delay of the sections in tandem varies approximately linearly with frequency, Fig. 2, graph 2. The resultant broadened pulse is amplified in stage 1 which may be a distributed amplifier and the initial pulse is reconstituted by a bridged-T filter section D which has a phase/frequency characteristic, Fig. 2, graph 3, which is complementary to that of sections A, B and C in tandem. The amplified output pulse is produced across resistor R.
Patent GB-676707-A (GB)
Title: Improvements in or relating to electrical capacitors
IPC: H01G4/30
Filed: 1949-10-17
Abstract: 676,707. Electric condensers. BRODRICK, A. H. B. Jan. 10, 1951 [Oct. 17, 1949], No. 26630/49. Class 37. A condenser consists of at least one dielectric plate 10, Figs. 1, 5, e.g. of mica, with metallic electrodes 11 deposited thereon, between insulating plates 13, Fig. 3, having metallic terminal connections 16, and cover-plates 17, Fig. 4, of insulating material, all assembled in a casing 18, Fig. 6, by which the plates are clamped together. The terminal connections preferably consist of a metal strip threaded through a hole 14, Fig. 3, in the insulating plate 13 and bent over the end as shown in Fig. 1. The casing 18 is cut away at 22, and has a notch 21 so that the electrodes are left uncovered at opposite ends and can be scraped away to effect final adjustment of the condenser. The whole is then encased in wax.
Patent GB-760124-A (GB)
Title: Ground-speed indicator device for use with maps and charts
Inventor: GRIFFITHS FRANCIS MYRDDIN
IPC: G01P1/08
Filed: 1953-09-28
Abstract: 760,124. Maps. KELVIN & HUGHES, Ltd. Sept. 21, 1954 [Sept. 28, 1953], No. 26644/53. Class 146(2). A device to indicate the speed of travel or the estimated time of arrival at some destination of e.g. an aircraft, comprises a scale having a distance scale 10, a speed scale 6 over which slides a cursor 5, and a time scale 7 comprising a marked light spring attached at one end to the zero end of the scale and at the other to the cursor 2. If it is required to measure speed, the time taken from point A to point B is noted and the spring 7 adjusted so that the noted time on the spring corresponds with the point B whereupon the speed is then indicated by the position of the cursor 2 which has moved in a slot 1. The cursor 2 is retained in position by a pawl 5. To measure the estimated time of arrival at a point C, the cursor is kept in adjusted position and the zero end of the scale is placed on B ; the time marked on the time scale or spring 7 which corresponds to point C will indicate the time required. A compass &c. may be included in the device.