baber/WOPTO huggingface dataset:
Patent GB-1341175-A (GB)
Title: Californium-noble metal neutron source material
IPC: G21G4/02
Filed: 1972-05-09
Abstract: 1341175 Neutron sources UNITED STATES ATOMIC ENERGY COMMISSION 9 May 1972 [1 July 1971] 21486/72 Heading G6P A neutron source material comprises a minor atomic proportion of californium dispersed throughout a major atomic proportion of a noble metal matrix. Noble metals referred to are Pd, Pt, Ru, Rh, Ag, Os, Ir, and Au. The material may be made by mixing an aqueous solution containing californium and nitric and formic acids with powdered noble metal, drying, and cold pressing. The compact may be heated in an inert or slightly reducing atmosphere and then sintered to form dispersed californium oxide; alternatively the compact may be heated in hydrogen to form an alloy of californium and the noble metal. In examples, californium together with cerium or samarium is dispersed as oxide in a palladium matrix. A wire is formed from the sintered product by repeated alternate steps of swaging or rolling and annealing. An elongated palladium sheath may be provided.
Patent GB-1273935-A (GB)
Title: Magnetic switch
IPC: H01H36/00
Filed: 1971-04-19
Abstract: 1,273,935. Magnetic switches. ITT INDUSTRIES Inc. 19 April 1971 [23 March, 1970], No. 21555/71. Addition to 1,153,694. Heading H1N. The thermally responsive switch of the parent Specification having both magnets mounted on a bracket or the end of the bimetal strip is provided with means for adjustment of the magnets. As shown the magnets 37<SP>1</SP>, 38<SP>1</SP> are secured by screws S1, S2 in slots (Fig. 9, not shown) in members B1, B2 secured to the bracket 39 mounted on the end of the bimetal spring 11<SP>1</SP>.
Patent GB-1371952-A (GB)
Title: Method of and apparatus for providing phase corrections in particular for the omega radio-navigation system
IPC: G01S1/30
Filed: 1972-05-09
Abstract: 1371952 Radio navigation SOC D'ETUDES RECHERCHES et CONSTRUCTIONS ELECTRONIQUES 9 May 1972 [20 April 1972] 21625/72 Heading H4D In a sequential transmission phase measurement radio-navigation system (e.g. Omega (Registered Trade Mark)) a correction transmitter generates phase correction signals associated with selected sequential transmissions, multiplexes them and transmits them by modulation on to a carrier wave. A receiver for the navigation system receives the correction signals, demodulates, demultiplexes and corrects its normal measurements thereby. Correction transmitter, Fig. 1.-A fixed station comprises an Omega receiver 1 which produces four signals from four Omega transmitters and a fifth reference signal during a silent reception period. The phases of these signals are compared with the theoretical values of phase to be expected at this station. The five signals are then multiplexed to provide a single signal. This 1 kHz signal is mixed with a 980 Hz reference signal to provide a 20 Hz signal which phase modulates a carrier signal and the resultant is transmitted. The phase modulator (Fig. 3, not shown) comprises a 20 Hz filter followed by an amplitude multiplier. The second input to the multiplier is a signal formed by dividing the transmission carrier wave frequency f 0  by 8 and shifting in phase by #/2. The multiplier output is added to the unshifted signal of frequency f 0/s  This signal is then multiplied in frequency by 8. This is accomplished by squaring the signal, operating a monostable of period 7/16 at the frequency f 0/s  and filtering at f 0 . The phase modulated output is pulsed to transmitter 3. Omega receiver, Fig. 4.-The normal Omega receiver is modified to allow the phase correction signals to be applied. The phase modulated carrier is received and passes two amplifying and mixing stages; the first uses a fixed frequency local oscillator and the second uses a switchable local oscillator whose frequency is determined by which correction transmitter is being received and is selected by switch 7. The signal is then demodulated to provide four phase correction signals and a reference signal. These five signals are demultiplexed and added to the measured signals from the Omega receiver. The corrected signals are then fed to a normal display 43.
Patent GB-300682-A (GB)
Title: Improvements in or relating to airship mooring towers
IPC: B64F1/14
Filed: 1927-08-17
Abstract: 300,682. Armstrong, Whitworth, & Co., Ltd., Sir W. G., and Brereton, C. F., Aug. 17, 1927. Anchoring.-An airship mooring tower having an arm tiltable in any direction from the vertical, has the arm made tubular and of such internal dimensions that the mooring cable can pass down it in a straight or substantially straight line so that its tension does not appreciably affect the arm within the limits of its movement. The arm is centred by cables connected to a series of presses supplied with low or high pressure fluid at will to permit it to follow the movements of the airship in process of being moored or to bring it to its central position where it can be locked by fluid actuated bolts engaging its lower end. A mooring cone 28 pivots about the axis of a member 3 which can slide in a member 2 gimbal mounted at 4, 6 to the upper platform of the tower. The tubes 2, 3 are sufficiently wide to enable the mooring cable 30 to pass down the tube and down the centre of the tower, or, as shown, around a sheave 32 without being bent out of a straight line except when the arm moves towards its extreme tilted position. The cable 30 preferably passes through a gripping device 33 and over a sheave 31 to the hauling gear. The lower end of the member 2 has a series of universally jointed connections 10 for cables 11 which pass over fixed pulleys 12, movable pulleys 13 on rams 19 movable in cylinders 20, around fixed pulleys 14 and finally are attached to weights 15 which keep the cables taut. When the arm is centred, crossheads 16 on the rams 19 are all hard up against stops 18 on guides 17 and the weights 15 are all pulled up to abut against a platform 21. When the arm is tilted to its maximum amount one of the rams 19 is in its uppermost position and in reaching this position a conical extension 22, Fig. 4, on the ram gradually diminishes the fluid passage. Fig. 4 shows a high and low pressure system similar to that described in Specification 300,681, a valve 66 controlling rams 7 for raising the member 3 or for allowing it to telescope under the pull of the mooring rope, and a valve 55 controlling the admission of high and low pressure fluid to the cylinders 20 and to cylinders 25 for actuating locking bolts 23.
Patent GB-687102-A (GB)
Title: An improved apparatus for dispensing change
IPC: G07F7/04
Filed: 1949-08-22
Abstract: 687,102. Money-changing apparatus: WHITE, F. C. Sept. 22, 1950 (Aug. 22, 1949]. No. 21754/49. Class 27. Delivering change for paper money. A pawl and ratchet prevent reverse rotation of the rectangular note receiving prism of Specification 279,653, [Class 116], in order to extract a note. As illustrated the pawl 20 is pivoted on one of the arms 22 by which the prism is supported and is biased by a blade spring 23 against a cruciform ratchet 21 carried by the prism.
Patent GB-614717-A (GB)
Title: Improvements in or relating to thermostatic electric switches and to snap-action mechanism therefor
IPC: H01H37/46
Filed: 1946-07-22
Abstract: 614,717. Thermal switches. THOMPSON & CO. (SUNBURY), Ltd., R. E., and ANDREWS, J. B. July 22, 1946; No. 21795. [Class 38 (v)] A thermal switch of the type that is actuated by the differential expansion of a rod and tube has a snap-action mechanism in which a resilient blade 4 has one end clamped to the rod 3 and its other end riveted to one end of a slotted switch arm 11. The other end of the switch arm carries an armature 19 which cooperates with a magnet 16, and a contact 13 which co-operates with a fixed contact 14 on an adjusting screw 18 threaded through a clamping plate 15, 15a for the magnet 16. The resilient blade has a bush 26 through which a stud 27 is screwed so that its end bears on an insulating stop 28 and causes the bending of the resilient blade when subject to the pull of the rod 3. When the required temperature is reached the tendency of the blade, in bending, to tilt the switch arm is sufficient to overcome the force exerted by the magnet 16 on the armature 19 and the contacts are opened with a snap action, the movement of the switch arm being limited by a stop 20 screwed into an arm 7 attached to the rod 3. The insulating stop 28 is mounted on a frame 30 which may be moved up or down within an outer frame 31, by means of a screw 35 to permit adjustment of the switch over a range of operating temperatures. Other methods of adjustment, in which spring loaded stops are used to avoid any over-stressing of the switch mechanism, are described in the Specification.
Patent GB-580280-A (GB)
Title: Improvements relating to coal production
IPC: E21C35/20
Filed: 1943-12-29
Abstract: 580,280. Endless-belt conveyers. INGHAM, E., and MINING ENGINEERING CO., Ltd. Dec. 29, 1943, No. 21824. [Class 78 (i)] [Also in Group XXI] In a system of longwall mining in which a cutter loader 1 is advanced along a face 2 and loads on to a face conveyer 8 extended behind it, the conveyer is positioned close up to the new face 13 leaving substantial space between the web width for the erection of chocks 9 and props 10, there being sufficient space between these supports and the face for the passage of a cutter loader when the conveyer 8 has been broken up. Coal is transferred from the comb 5 to the conveyer, which is preferably of the construction described in Specification 580,281, by a rotary platform 7 of the construction described in Specification 580,282. Specification 520,744 also is referred to.
Patent GB-645470-A (GB)
Title: A process for inhibiting acid attack on brick and the like
IPC: B65D85/84
Filed: 1948-08-18
Abstract: A process for inhibiting the attack of solutions of acids, such as sulphuric, nitric, phosphoric and hydrochloric, on surfaces of brick or other fired siliceous products comprises adding to the solution an aluminium oxide-containing additive, preferably in amount of at least 0.1 per cent by weight of the acid solution.  The additive used, which may be in finely-divided form, e.g. passing 200 mesh/inch, may be alumina (hydrated or unhydrated), kaolin or material of the same composition as the product to be protected.
Patent GB-1121215-A (GB)
Title: An internal combustion engine
IPC: F01L7/04
Filed: 1966-05-17
Abstract: 1,121,215. Reciprocating cylinder engines. J.J.M.J. GERIN. May 17, 1966, No.21967/66. Heading F1B. A piston P and reciprocating cylinder C are connected by rods B 1 , B 2 , to crank-shafts 3, 15, rotating in opposite directions with shaft 15 rotating at half the speed of shaft 3. The engine operates on a four stroke cycle, the upper part 27 of cylinder C forming a pump supplying compressed air to a reservoir feeding the cylinder intake ports 30. The shafts 3, 15, are interconnected by gearing 6A, 11, 8, and crank-discs 17 on opposite sides of the cylinder are interconnected by gearing 17A, 22 and shaft 21. The cylinder intake and exhaust ports are controlled by a rotating sleeve 26 carried by the piston C, the sleeve being rotated by projections 36A thereon engaging an undulating groove 35 in the outer cylinder 6, the piston C being guided by projections 28A engaging longitudinal grooves 29. Water is injected into the cylinder space at the end of the exhaust stroke to cool the cylinder.
Patent GB-1335653-A (GB)
Title: Exposure device for manufacturing a display screen of a colour display cathode ray tube
IPC: H01J9/227
Filed: 1972-05-11
Abstract: 1335653 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 May 1972 [14 May 1971] 22063/72 Heading H1D An exposure device for manufacturing a display screen of a colour TV tube comprises a light source 6 for illuminating a photosensitive layer 3 on the tube faceplate 2 through a pattern of holes 4 in a shadow mask 5, and rotatable means 11 for producing a virtual displacement, seen from the mask, of the source parallel to a target plane at the faceplate centre. A point light source comprises a gas discharge tube 7 and a quartz cone 8. A lens 10 produces a virtual source coincident with the deflection point of the electron beam. The means 11 comprises a wedge shaped lens with slight curvature of surface 14 and its rotation produces an effective annular source. Dots produced on the faceplate are smaller than the holes in the mask and hence smaller than the impact area of the electron beams. This increases the area between the dots which may be of black light absorbing material. The lens 11 may be rotationally symmetrical about its axis or replaced by a plane sheet of glass rotated about an axis at an angle to its surface.
Patent GB-517470-A (GB)
Title: Improvements in or relating to carburetters for internal combustion engines
IPC: F02M69/00
Filed: 1938-07-26
Abstract: 517,470. Spray carburetters. CORBY, A. B. July 26, 1938, No. 22121. [Class 7 (iii)] Fuel is delivered to the nozzle of a carburetter in accordance with the amount of air passing therethrough, by means of a pump or fuel meter-, ing device driven by a fan rotated by the air stream. Fig. 3 shows a fan 22 adapted to be arranged 'in the air intake and connected by a spindle 17 to a centrifugal impeller 15 which draws fuel from a float chamber through a passage 9 and delivers it through pipes 23, 24 to a nozzle arranged above or below the fan. The impeller 15 comprises a partly cylindrical and partly conical body provided with radial slots forming blades. The' fuel nozzle may be provided with a needle valve adjustable by screw and nut. In a modification, the fan is formed with straight blades and arranged on a vertical spindle in a horizontal air intake, so that only half of the fan is acted on by the air flow.
Patent GB-811203-A (GB)
Title: Improvements in or relating to belt drive mechanisms
IPC: F16H61/662
Filed: 1957-07-12
Abstract: 811,203. Expanding pulley gearing; gearing for stopping and starting machinery. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 12, 1957 [July 17, 1956], No. 22145/57. Class 80 (2). Expanding pulley belt gearing for use in washing machine drives comprises a shaft 13 to which is secured one pulley flange 16 having a hub 17 upon which the other pulley flange 18 is axially slidable, each flange having an inner frusto-conical belt engaging face 31 disposed at a smaller angle to a plane normal to the axis of the pulley than an outer belt engaging face 32. When a control solenoid 23 is energized a spring 26 connected to the solenoid armature 24 is tensioned to turn a bell-crank lever 25 and engage its flat end 28 with a bearing ball 29 in the end of the hub 19 of the pulley flange 18, which is accordingly slidden leftwards to engage a V-belt 15. There is some slack in the V-belt 15, so that prior to energization of the control solenoid 23, no torque is transmitted from an electric motor 12 driving the shaft 13, &c. The V-belt 15 is first engaged by the smaller radius frusto-conical faces 31 of the pulley flanges 16, 18, to transmit drive at a low ratio. The small angle of the inner frustoconical belt engaging faces 31 causes the V- belt 15 to climb slowly outwards of the pulley towards the outer frusto-conical faces 32 as drive is taken up, so that the initial torque demanded of the driving motor 12 as the washing machine mechanism accelerates is not excessive. The V-belt 15 finally engages the larger radius frusto-conical faces 32 of the pulley flanges and drive is transmitted at a higher ratio.
Patent GB-1107603-A (GB)
Title: A pumping plant including means for controlling the pump delivery
IPC: F04D15/00
Filed: 1965-05-25
Abstract: 1,107, 603. Centrifugal and axial-flow pumps. SULZER BROTHERS Ltd. May 25, 1965 [May 25, 1964], No. 22155/65. Heading F1C. In a pumping system for controlling the water level in a well 2, the quantity of water discharged by a screw pump 4 is reduced by delivering air through one or more pipes 9, 10 to the pump inlet duct 8. The pipes 9, 10 may be welded or soldered to the duct 8. Air is delivered to the duct when a falling water level uncovers the end 12 of the pipe 10 and later the end 11 of the pipe 9. The pipes 9, 10 may be associated with an external centrifugal pump having an inlet duct passing horizontally through the side of the well. A number of pumps each associated with an air entry pipe may be connected in parallel.
Patent GB-614696-A (GB)
Title: Improvements in propulsive ducts for use with rotative aerofoils
IPC: F02K7/00
Filed: 1946-07-25
Abstract: 614,696. Jet propulsion plant. CIERVA AUTOGIRO CO., Ltd., SHAPIRO, J. S., and PULLIN, C. G. July 25, 1946, No. 22159. [Class 110 (iii)] A propulsive duct, i.e. a duct in which air flowing through it undergoes a thermodynamic cycle and the output is in the form of increased kinetic energy of the airstream, for driving a helicopter blade or other rotative arm, is provided with movable valve members at its entry so positioned and mass-loaded that above a certain speed of rotation of the helicoptor blade or arm, the centrifugal force acting on the valve members will keep them permanently in the open position. The propulsive duct therefore operates as an impulse or intermittent duct at low rotational speeds of the blade or arm and continuously at high rotational speeds. A helicoptor blade 4, Fig. 1, supports a propulsive duct 7 by means of a pair of flat parallel extensions 5, 6. Burners mounted on a grid 8 are fed with fuel from a pipe 9 through the extensions 5, 6. In the entry of the duct is a number of streamline partitions 10 to the leading edges of which are mounted resilient blades 11 having at their trailing edges loading masses 12. At low rotational speeds of the blade 4, the resilient blades act as flutter valve which open and close in resonance with the vibrations of the air column in the duct tunnel. At high rotational speeds of the blade 4, the centrifugal force acting on the masses 12 holds the blades 11 continuously in the open position so that the propulsive duct is continuous in operation.
Patent GB-1464580-A (GB)
Title: Plastics forceps hinge
IPC: B25B7/06
Filed: 1974-05-20
Abstract: 1464580 Pliers HAFFENDEN-RICHBOROUGH Ltd 28 April 1975 [20 May 1974] 22378/74 Heading B4W [Also in Divisions A5 and E2] In a tool member (such as pliers or surgical forceps) having a pair of pivotally connected members 1, each member 1 is provided with a jaw 2 and a handle 3, a pivot means is formed by a projection 9 having a base 10 and an enlarged head 11 which is formed integrally with each member 1 and is adapted to engage end portions 8 of a slot portion 5 such that, on assembly, a shoulder 7 or the slot 5 is in abutting engagement with a shoulder 12 on the projection 9 and the two members are retained against separation when the members are in the working position. The tool member may be constructed from plastics material by injection moulding.
Patent GB-394829-A (GB)
Title: Improvements in or relating to the recording and reproduction of sound in connectionwith kinematographs
IPC: G11B19/265
Filed: 1932-08-10
Abstract: 394,829. Gramophones ; associated working with kinematographs. CHURCHER, G. G. E., Woodcote, Castle Road, Salisbury. Aug. 10, 1932, No. 22393. Addition to 378,499. [Class 40 (ii).] The means claimed in the parent Specification for driving gramophone or like discs from a kinematograph, are modified by mounting the friction member so that, during its radial traverse relatively to the disc, it always bears against the underside of the turntable at a point immediately below the point where the sound reproducer contacts with the disc. A U-shaped member 49, which is provided with a sleeve 52 longitudinally movable on a horizontal guide-bar 48, carries the sound reproducer 60 at one end of one arm 50 and the friction wheel 61 at the end of the other arm 51. The wheel 61 is driven through bevel gearing 63 and a flexible drive 62 from the kinematograph projector, and its speed is controlled by a governor 66. The wheel 61 and governor 66 are enclosed in a casing 69 which is provided at its underside with a roller 70 adapted to facilitate the radial traverse of the wheel 71. A pinion 77, which is driven by gearing 71 .. 76 from the turntable spindle 42, is adapted to engage a rack 54 carried by a sleeve 53 axially movable with the sleeve 52 so as to effect traverse of the reproducer 60 and wheel 61. The sleeve 53 is pivotally mounted on the sleeve 52 so that the rack 54 may be disengaged from the pinion 77 to permit radial adjustment of the member 49. The rack 54 is normally engaged with the pinion 77 by means of a spring 55 which engages between the rack 54 and the member 49. The turntable 41 is provided with a pin 44 engaging with a slot 43 in the spindle 42 to permit axial displacement of the turntable by means of a pair of arms 80 carried on a shaft 78 which is adapted to be rotated manually to lift the turntable from its working position in contact with the wheel 61. In a modified arrangement, the member 49 may be traversed outwardly of the turntable. The device may also be used in recording sound.
Patent GB-1156972-A (GB)
Title: Insulated Chimneys
Inventor: TURTON ALAN EDWARD
IPC: F23J13/04
Filed: 1966-05-19
Abstract: 1,156,972. Insulated multiple chimneys. GRATEHEAT Ltd. 9 Aug., 1967 [19 May, 1966], No. 22412/66. Heading F4J. An insulated chimney (Fig. 2) is formed from a plurality of sections assembled end to end. Each section comprises a stainless steel inner tube 1 surrounded by an outer tube 3 of galvanized iron, aluminium or stainless steel with heat insulating material 4 interposed therebetween. The ends of each section have annular caps 5, 6 of complementary shape, an annular rib 7 being received in a complementary annular groove 8 and contact being effected over the tapered sides 11. The inner tube 1 is slightly tapered so that a small portion 10 will overlap and engage the end of tube 1 of the adjacent section. A recess 13 located in the tapered side 11 of end cap 6 together with a pressed stud (not shown) located in the end cap 5 provide means for interlocking adjacent sections. In addition a metal clamping member 12 having ribs 15, together with a strap 16 is applied around the join between adjacent sections, the ribs 15 engaging grooves 14 provided in the outer tube 3.