baber/WOPTO huggingface dataset:
Patent GB-874514-A (GB)
Title: Improvements in or relating to welded bi- or multi-metallic tubular junction pieces
IPC: B23K20/233
Filed: 1959-05-29
Abstract: 874,514. Extruding composite tubes; welding by pressure. ETABLISSEMENTS AUTROUSSEAU & CIE. May 29, 1959 [June 3, 1958], No. 18416/59. Classes 83 (2) and 83 (4). A bi-metallic or multi-metallic tubular connecting element 1, 2, Fig. 7, is made by cold pressure welding together two slugs respectively of copper and aluminium, or alternatively cold welding these slugs to the ends of an intermediate slug of a third metal, and then cold extruding the composite block thus formed into a tube with the weld surface or surfaces of conical form. Metal slugs 1, 2, Fig. 2, of copper and aluminium are cold pressure welded together in dies 3, 4. The weld bead 6 is then removed by a shear ring 7, Fig. 3 (not shown) and the compound slug 1, 2 is then cold backwardly extruded by a punch 10 in a die 9, Fig. 5, to cup shape, Fig. 6 (not shown), with the weld junction lying on a conical surface. The closed end is then removed to form the element of Fig. 7 with its weld junction 5. In another embodiment, Fig. 9 (not shown), the element is formed by direct extrusion using a ram with an integral mandrel. The starting workpieces may be of tubular or cup shape, Figs. 10, 11 (not shown). In another embodiment an intermediate slug of a third metal is cold welded between the slugs of copper and aluminium. The element may be used to connect together copper and aluminium tubes by simple butt or resistance welding these tubes to the respective ends of the element.
Patent GB-887299-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F1/14
Filed: 1958-06-09
Abstract: 887,299. Nuclear reactors. HUET, A. June 9, 1958 [June 13, 1957], No. 18424/58. Drawings to Specification. Class 39(4) In a nuclear reactor the fuel rods are encased in jackets having heat exchange surfaces (e.g. corrugated fins) which are selected according to the position of the rod so that the rate of exchange of heat depends on the position of the rod in the reactor. Deflecting surfaces may be placed between the rods. Means may be provided of varying the rate of flow of coolant in different parts of the reactor and of varying the distances between the fuel rods. The heat exchange surfaces may also vary along the length of each rod. The rods are mounted on a lazy-tongs arrangement to allow adjustment of their positions. Specifications 825,996 and 874,395 are referred to.
Patent GB-729867-A (GB)
Title: Improvements in or relating to fluorescent screens and methods of forming such screens
IPC: G21K4/00
Filed: 1953-07-03
Abstract: 729,867. Luminescent screens. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. July 3, 1953 [July 23, 1952], No. 18453/53. Drawings to Specification. Class 39 (1). [Also in Group XXIII] A method of forming a fluorescent screen preferably for an X-ray image intensifier where the screen is closely adjacent a caesiated antimony surface, comprises firstly subjecting a glass surface to the action of a 6 to 8 per cent hydrofluoric acid solution at a temperature of between 30‹ C. and 40 ‹ C. for up to five minutes, secondly subjecting the treated surface to the action of dilute hydrochloric acid followed by distilled water, and then settling phosphor particles on the glass surface from a liquid suspension. The glass may have a composition of SiO 2  80 per cent, Na 2 O 4 per cent, Al 2 O 3  2 per cent and B 2 O 5  14 per cent. The action of the first step is to remove from the glass surface the more soluble oxides leaving a skeleton structure of SiO 2  and of the second step to remove the soluble fluorides. The phosphor, may comprise powdered calcium tungstate, zinc sulphide or zinc-cadmium sulphide; the vehicle may be dilute potassium silicate. The phosphor particles may have a diameter of 1 to 2 microns or for some purposes an average of 20 microns. The glass surface is placed in the settling bath at such time as particles of desired size begin to settle. After removal from the bath the phosphor-coated glass plate is baked to a temperature of about 425 ‹ C. A protective transparent film such as germanium oxide, zinc sulphide, lithium fluoride or calcium fluoride is then applied to the phosphor surface, for example by sublimation. The applied film may contain about 1.0 per cent or less of silver to render it slightly electrically conductive, or it may be coated with a film of tin oxide by spraying a thin oxide solution on it while hot, or a thin layer of silver, chromium, or manganese may be evaporated on.
Patent GB-123348-A (GB)
Title: Improvements in or connected with Artificial Limbs.
Inventor: BLATCHFORD CHARLES ALBERT
IPC: A61F2/54
Filed: 1917-12-12
Abstract: 123,348. Blatchford, C. A. Dec 12, 1917. Limbs, arlificial.-Relates to means for securing tools or the like to artificial arms. The shaft of each tool carries a bolt which is grooved annularly to engage the usual spring snap-fastening and is also provided with a number of recesses engaged by a separate locking pin to fix the tool in any desired angular position in relation to the arm. Figs. 3 and 4 show one construction in which the spring snap-fastening comprises a rightangled rod 50, one arm of which engages the annular groove and the other carries an operating knob 57. A spring is interposed between the knob and the outer wall of the socket 38. The locking device comprises a spring pin 58 adapted to enter any one of the holes 53. A lug 60 on the pin engages a bayonet slot on the socket to secure the pin against axial movement when desired. The socket 38 is connected to the bucket of the arm by an elbow-joint of the kind described in Specification 112,690. In the construction illustrated, a fore-arm member provided with a universal joint 63 is detachably connected to the socket 38, and the spring-snap and locking-mechanisms are repeated at the lower socket 38a for the reception of the tool. The heel 57<a> of the locking- pin in this case is provided with a peg 67 which fits into a recess as shown, or rides upon the outer surface of the flange 68 to fix the pin in its locking and unlocking positions respectively. In the construction shown in Fig. 5, the socket 38 is formed as a re-entrant portion of a main arm member 75 which encloses all the mechanism except the operating knobs. The spring snap-fastening comprises a sector-block 70 at the end of a spring pin. Both operating knobs are rotatably secured to their pins and are fitted with pegs 67 which engage recesses in the member 75 or ride upon the outer surface according to the angular position of the knobs. In a modification of this construction, the knobs are spaced from the member 75 by short tubes having cam-shaped outer ends which co-operate with similar cam surfaces on the knobs as a substitute for the pegs 67. In the construction shown in Fig. 9, the pin 71 of the spring-snap fastening is rotatable and engages the annular groove directly. The operating knob is fitted with a key 81 adapted to enter a key-way in the casing 76 in one angular position of the knob. In a further modification, a sector-shaped block is swivelled on the inner end of the pin 71. Fig 15 shows a spring snap-fastening comprising a sliding plate 92 which is operated by the pin 95 against the action of the spring abutting against the upstanding lug 96. Fig. 17 shows a modification in which a peg 98, on the rotary and axiallymoving operating pin of the member 92, serves as the locking-device. Figs. 11 and 13 show a further construction in which the spring snap-fastening comprises an angular arm 85 and spring 86, while the locking-device comprises a pivoted lever 87.
Patent GB-1470305-A (GB)
Title: Rectilinear lift-and-lay conveyor
IPC: B65G25/06
Filed: 1974-04-26
Abstract: 1470305 Reciprocating conveyers F B FISHBURNE and C W TRAUGHBER 26 April 1974 [7 Sept 1973] 18490/74 Heading B8A A conveyer 3 includes a reciprocable conveyer beam 10 which in one of its positions is substantially level with the top of a trough in a floor F so that vehicular and pedestrian traffic can cross the conveyer unimpeded. In Fig. 18, a hogshead is transferred from a conveyer 14 to conveyer 3 by a pusher 2, after which the end 10A of conveyer beam 10 pushes the hogshead on to a conveyer 1a. Conveyers 1, 1a operate in the same way as the conveyer 3. Conveyer construction. The beam 10 is supported on pairs of support devices 13, 14 and is reciprocated by an hydraulic motor 51. Each device 13 is pivotally mounted on a base-plate 5 and has a beam-supporting roller 24. Each pair of devices 13 is connected by a transverse bar 36 engageable with the beam when the devices are pivoted, by horizontal arms 38 actuated by an hydraulic motor 44, to the position shown in Fig. 4. In this position the top of the beam is level with the floor and edge portions 30 of the devices are in load-bearing engagement with the base 5. In two other operational positions Figs. 4A, 4B (not shown) the beam is supported on the rollers 24, the beam being above floor level in Fig. 4A and below floor level in Fig. 4B. Support devices 14 are identical to devices 13 except that each device 14 has its own short support bar (36a, Fig. 9, not shown). The beam 10 is connected to the piston rod 54 of the motor by a dolly having a vertical tube which receives a pin secured to the beam. In operation, with the beam 10 raised above floor level, motor 51 is actuated to retract its piston rod 54 and the beam is moved towards the conveyer 1a. The devices 13, 14 are then pivoted by motor 44 to lower the beam below floor level after which motor 51 is energized to extend piston rod 54 and return the beam to its starting position ready to be raised by the devices 13, 14 and motor 44. The beam has pusher teeth to sweep debris from conveyer 3 towards conveyer 1. A number of lengths of channel stock may be connected to form the beam. In a modification, Figs. 15-17 (not shown), the hydraulic motors hold the beam in its raised position; in its lowered position the beam is somewhat lower than the floor level. The beam is guided longitudinally by rollers (93) engaging side flanges (112) of the beam.
Patent GB-596110-A (GB)
Title: Improvements in domestic fireplaces
IPC: F24B1/191
Filed: 1945-07-19
Abstract: 596,110. Domestic fireplaces. STRAFFON, A. R. July 19, 1945, No. 18522. [Class 126] A fireplace fitting is built up of separate elements so as to permit of adjustment to suit the width of the fireplace opening. The fitting comprises a back member, formed in two parts 11, with a conversely curved front face, a pair of cheeks 17 whose rear edges are curved to conform with the front of the hack member, a base block 13 upon which the back member stands and a lintel bar 19 which engages the tops of the cheeks to maintain them in the required position. The lintel member has rabbetted ends so as to fit tightly upon the tops of the cheeks and the rear face of the lintel is of an ogee form which directs smoke from the front of the fireplace recess rearwardly and up the chimney. The front and rear faces of the base member are formed with differently spaced recesses 15, any one of a pair of which receives the lower corner of a cheek so as to locate it in a correct position. By turning the base block over a differently spaced set of recesses is exposed and the fitting may be made to suit any fireplace merely by placing the cheeks, which are interchangeable, in the appropriately spaced recesses ; the lintel bar is the only non-variable component. If desired, the back member may be formed with pairs of ribs, each pair forming a channel to locate the rear edge of a cheek.
Patent GB-125329-A (GB)
Title: Improvements in or relating to Tilting Tables.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: A61G13/00
Filed: 1918-11-12
Abstract: 125,329. Jackson, W. J. Meltersh-, (West Gravitiser Corporation). Nov. 12, 1918. Pivot adjustments.-The tilting of the top of a table for medical and other purposes is effected by the action on projections or teeth 23 of spiral cams 22 operated in either direction by a pivoted double-acting pawl 30 and ratchet teeth 31 on the cam wheel. The pawl is operated to reverse its action through mechanism connecting it to a lever 37 at the end of the tilting-lever 28.
Patent GB-1173024-A (GB)
Title: Heat Exchanger Plant for the Exchangeable Media Liquid-Metal/Water
IPC: F22B1/06
Filed: 1967-04-21
Abstract: 1,173,024. Steam generators. INTERATOM, INTERNATIONALE ATOMREAKTORBAU G.m.b.H. 21 April, 1967 [31 May, 1966], No. 18566/67. Heading F4A. [Also in Division G6] In a nuclear power plant, a liquid sodium, water heat exchanger is provided with a backflow restricting device to limit damage due to pipe fracture. Hydrogen bubble detectors are associated with the sodium lines to indicate transfer of hydrogen from the water lines through faults in the pipe walls. Non-return valves in the sodium supply line close when pipe fracture occurs. The sodium, water reaction zone moves through the sodium outlet line to a buffer vessel. A rupture disc in the vessel releases the reaction zone to a transfer chamber from where it moves to a separator. A gas pressurized surge tank is associated with the buffer vessel. Sodium flows from pipe 1 to the discharge line 11, through the outer tube of the exchanger units 8. A liquid sodium, water reaction closes the non-return valve 6, and the hydrogen bubble detectors 40 are located at 11. Water, for steam generation, enters at 12. The cooled sodium enters the buffer chamber 20, isolated by the rupture disc 21 from the chamber 22 and the separator 24. Vapour and gas are evacuated by 25 and metal tapped off at 26. Liquid metal leaves 22 through the orifice 28, and flows into the surge tank 32. After a pipe fracture, the valves 6 close line 3 and the reaction zone moves into chamber 22. Rupture disc 21 fractures and sodium flows to separator 24. The generation of high pressures is prevented by surge tank 32, orifice 28 and the transfer chamber. In modifications an additional buffer chamber is included in the hot side of the sodium circuit and two similar heat exchanger systems may be operated in parallel.
Patent GB-1195979-A (GB)
Title: Improvements in and relating to Brake Actuators.
Inventor: NEWSTEAD CHARLES
IPC: F16D65/22
Filed: 1967-09-18
Abstract: 1,195,979. Internal shoe drum brakes. GIRLING Ltd. 18 Sept., 1967, No. 18607/68. Divided out of 1,195,977. Heading F2E. The subject-matter of this Specification is identical with part of that described in Specification 1,195,977, but the claims are concerned with a brake actuator employing tappets of circular cross-section which are urged apart by a plurality of rollers of the same diameter mounted on a common axis and situated between the tappets; a bearing pad of rectangular cross-section is secured to an inclined inner end face of each tappet to provide an equal path length for each roller.
Patent GB-298679-A (GB)
Title: Improvements in or relating to player grand pianos
Filed: 1927-07-15
Abstract: 298,679. Gunton, F. W., and Marshall & Sons, Ltd., Sir H. July 15, 1927. Pianoforte pedals.-In a horizontal playerpiano in which the pneumatic action is mounted in a drawer below the key bed, the pedal lyre is mounted on the drawer and the pedals are con. nected to the usual damper lifting and bey-shifting mechanism through a pair of #-shaped levers 53 and push-rods 56 which register with plungers 58 when the drawer is pushed back.
Patent GB-201550-A (GB)
Title: Folding playing board for board games
IPC: A63F3/02
Filed: 1923-07-23
Abstract: 201,550. Murie, R. M. July 25, 1922, [Convention date]. Board games.-A board for draughts, chess and similar games may be folded into the shape of an open-ended box so as to enclose an inner box within which the playing pieces may be stored. The board is shown in Fig. 1 opened out, but may be folded about the hinges C so as to assume the open-ended form shown in Fig. 3. The inner box, Fig. 5, may be enclosed by the folded board as shown in Fig. 6. The arrangement of the hinges C may be varied.
Patent GB-783277-A (GB)
Title: Improvements in or relating to monitoring the impedance of a load
Inventor: ROTH JOSEPH FREDERICK
IPC: H02H3/40
Filed: 1954-06-28
Abstract: 783,277. Measuring bridges. GENERAL ELECTRIC CO., Ltd. May 3, 1955 [June 28, 1954], No. 18901/54. Class 37. [Also in Group XXXVII] In an impedance responsive arrangement, voltages respectively dependent on the voltage applied to a load 25 and the current taken by the load are applied between the control grids 15, 16 and the cathodes 11, 12 of a pair of thermionic valves 1, 2 connected in a Wheatstone bridge 1, 2, 5, 6, a change in the impedance of the load causing the unbalancing of the bridge with the resulting operation of an indicating, alarm or circuit-breaking device. Thus in the arrangement shown, when the voltage derived from a shunt resistor 30 and applied to the grid 15 and the voltage drop across a series resistor 26 and applied to the grid 16 depart from a predetermined relationship, a relay 68 connected between the anodes 3, 4 of the valves closes its contacts 65, 66 to cause the energizing of a relay 52 from an auxiliary supply 7, 8. The relay 52 opens cotacts 50, 51 to de-energize the operating coil 49 of a contactor 41 and closes contacts 59, 60 to complete a holding circuit for itself. When the fault on the load has been removed, a switch 61 may be used to restore the relay 52. A relay 56 keeps its contacts 53, 54 (in the circuit of the operating coil 49) closed when energized from the auxiliary supply 7, 8. The load 25 may be a spark gap modulator which is supplied from a variable voltage three-phase transformer 37 ... 39 through a rectifier 28. To prevent re-opening of the contactor when the load is first connected and before the supply voltage to the load has been raised to its normal operating value, a relay 64 is connected for energization from one phase of the transformer through a half-wave rectifier 77 and a smoothing circuit. When the relay 64 is sufficiently energized, it closes contacts 62, 63 in series with the contacts 65, 66 of the relay 68, the relay 68 then being effective on operation to cause the opening of the contactor. A milliammeter 69 may be connected between the anodes of the valves.
Patent GB-241329-A (GB)
Title: Improved manufacture of white lead
IPC: C09C1/16
Filed: 1924-08-08
Abstract: White lead is prepared by reacting on a highly basic sulphate of lead with an aqueous solution of a bicarbonate of an alkali metal which may contain undissolved carbonate.  The basic sulphate is prepared by the action of concentrated sulphuric acid on lead monoxide in the presence of a small quantity of another acid such as acetic or nitric acid, to ensure the presence of some lead in water soluble form, the mixture being ground during the process. Acid sulphates of alkali metals such as sodium or potassium may be substituted for the sulphuric acid.  The temperature during sulphating should be maintained at about 40 DEG  C. by blowing in steam, and should not exceed 50 DEG  C.  The proportion of water during sulphating should be between 1/2 and 2 parts for each one part of the oxide.  The final product is washed and dried or mixed with oil and ground.  Figures are given of the various quantities used.
Patent GB-123951-A (GB)
Title: Improvements in Chimney Tops and like Ventilators.
IPC: F23L17/02
Filed: 1918-11-19
Abstract: 123,951. McAllister, A., and Aspromet Co. Nov. 19, 1918. Chimney &c. tops.-A ventilator or chimney top consists of a conical hood 5 surrounding a pipe 2 and fitted with vanes 10 on its outer side. Above it is a cap 17, and optionally a guard 13 surrounding the outlet between the hood and cap. Radial vanes 3 may be fitted between the hood 5 and the pipe 2.
Patent GB-890146-A (GB)
Title: Improvements in exploders
Inventor: MCAUSLAN JAMES HAY LOUDON
IPC: F42D1/05
Filed: 1959-06-03
Abstract: 890,146. Control apparatus for electric detonators. IMPERIAL CHEMICAL INDUSTRIES Ltd. May 30, 1960 [June 3, 1959], No. 18937/59. Class 38 (4). An exploder for use with detonators used in explosive atmospheres is arranged to have an output of square waveform and to fire twelve shots at the same time and is further arranged to limit the energy which passes to the output circuit when a break in that circuit occurs and to ensure that the energy to fire the detonators passes to them before any appreciable movement of the material being blasted takes place. A capacitor 3 is charged from a source 1, 2, such as a battery, over a switch 4 operation of the switch 4 then causing the capacitor 3 to discharge into the exploder circuit to produce an output across terminals 9, 10 for supply to the detonators. A voltage-regulating semi-conductor diode 11, which maintains a constant volt drop across itself, is connected to one end of a resistor 8 so that by way of a transistor 5 and an amplifying transistor 12 the voltage across the resistor 8 and hence the output current is maintained constant by varying the degree of conductivity of the transistor 5. When the switch 4 is operated to discharge the capacitor 3 into the exploder circuit a timing capacitor 16 begins to charge and after a time equal to the time during which it is desired to pass current to the detonators-say 4 milliseconds-the potentials of the electrodes of a switching transistor 18 become such that the transistor is rendered conductive which thereupon causes the transistor 5 to become fully conductive and so reduce the output to the terminals 9, 10 to zero. In order to limit the voltage appearing at the output terminals 9, 10 to a safe value in the event of a break in the circuit to the detonators a voltage regulating semi-conductor diode 20 is connected across the output terminals. Alternatively this diode may be connected between the base and collector of the transistor 5.
Patent GB-423504-A (GB)
Title: Improved insecticides
IPC: A01N59/16
Filed: 1933-07-04
Abstract: Barium silico-fluoride is ground in a ball-mill with a dispersing agent, such as the condensation product of naphthalene sulphonic acid and formaldehyde, and water, and then a mixture of glue and a quaternary ammonium salt is added.  The quaternary ammonium salt must contain one alkyl or alkylene radical having a chain of at least 10 carbon atoms and may be cetyl pyridinium bromide.ALSO:Insecticidal preparations, to be diluted with water for spraying, are made by milling barium silicofluoride with a dispersing agent and water and then incorporating glue and a quaternary ammonium salt containing one alkyl or alkylene radical having a chain of at least 10 carbon atoms. According to an example, the dispersing agent used is the sodium salt of the condensation product of naphthalene sulphonic acid and formaldehyde and the quaternary ammonium salt is cetyl pyridinium bromide.
Patent GB-1431450-A (GB)
Title: Device for atomizing a sample for the flameless atomic absorption  spectroscopy
IPC: G01N21/74
Filed: 1973-04-19
Abstract: 1431450 Spectral analysis apparatus BODENSEEWERK GERATETECHNIK GmbH 19 April 1973 [21 April 1972] 19003/73 Heading G2J In a device for atomizing a sample for flameless atomic absorption spectroscopy, the sample is contained in a tube 1 surrounded by at least one radiation absorbing, heat insulating, protective jacket 5. The sample is introduced into graphite tube 1 via lateral openings 6, 7 and electric current for atomizing the sample is supplied to the tube via graphite cones 2 mounted in cooling chambers 3. The protective jacket may be of reflective metal which becomes blackened on the inside by emitted graphite particles. In Fig. 2 (not shown) the jacket is replaced by a hollow cylindrical carbon body which may be porous, having a lateral opening for sample injection and for supply of a protective gas between the jacket and tube. If the body or jacket does not permit conduction of electricity, it is slipped directly over the tube I which is then electrically heated. A number of protective jackets may be employed and the outside surface is made reflective.