baber/WOPTO huggingface dataset:
Patent GB-946604-A (GB)
Title: Improvements in or relating to a method of testing inhomogeneous glass
Inventor: OLDFIELD LUCY FLORENCE
IPC: G01N33/38
Filed: 1961-07-18
Abstract: <PICT:0946604/C1/1> For tracing the cause of inhomogeneities, such as cords and stones, in glass, microhardness tests using a loaded pyramid-shaped diamond point are made on a number of glass samples doped with different amounts of suspected materials causing the defects and curves such as those of Fig. 2 plotted from which further measurements on the microhardness of a cord or stone may be correlated with a disproportionate presence of a given suspected material. Thus the curves EF, EG show the effects of 1-5% addition of alumina and silica respectively, the curve HK relating to an equalproportion alumina-silica mixture in a total proportion of 3-5%. For testing a curved piece of glass cut, for example, from a bulb, this is flattened by heating in a nitrogen atmosphere within a sealed alumina tube for 5 minutes at 750 DEG  C.  The calibration samples of doped glass are prepared by founding 100 gms. of the base glass with the additive (1-5% by weight) in a platinum-2% rhodium crucible in an electric furnace at 1400-1550 DEG  C. for up to 16 hours. The crucibles are provided with platinum foil lids to prevent volatilization.  The Specification gives three examples of base glasses to which are added:-  (i)  Silica only (1-5% by weight). (ii)  Alumina only (1-5% by weight).  (iii)  Silica + alumina (each 0.5-2.5% by weight).  The constituents are given in percentages by weight.  Crushed Brazilian rock crystal is used for the silica, and calcined alumina. Example 1.  (Borosilicate glass.) .Silica (SiO2).75.5 .Boric oxide (B2O3).17.0 .Alumina (Al2O3).2.0 .Sodium oxide (Na2O).4.0 .Potassium oxide (K2O).1.5 Example 2 .Silica (SiO2).71.6 .Alumina (Al2O3).5.5 .Calcium oxide (CaO).0.3 .Sodium oxide (Na2O).7.9 .Potassium oxide (K2O).1.4 .Boric oxide (B2O3).9.9 .Barium oxide (BaO).2.8 .Zinc oxide (ZnO).0.4 In this case three founds are necessary, for periods of 16, 24 and 16 hours respectively. Example 3.  (Soda glass.) .Silica (SiO2).70.5 .Alumina (Al2O3).2.6 .Calcium oxide (CaO).5.7 .Magnesium oxide (MgO).2.9 .Sodium oxide (Na2O).16.3 .Potassium oxide (K2O).1.2 .Boric oxide (B2O3).0.5 .Sulphur trioxide (SO3).0.2
Patent GB-1019328-A (GB)
Title: Magnetic materials
IPC: C01B33/20
Filed: 1964-06-24
Abstract: Europium silicates viz.-EuSiO3, Eu2SiO4 and Eu3SiO5 are prepared by intimately mixing SiO2 with one or any of EuO, EuCO3 or Eu(OH)2, heating the mixture to 800 DEG  to 1600 DEG  C. in a non-oxidizing atmosphere e.g. in a vacuum or in the absence of oxygen and cooling. Alternatively the mixture may be heated in a reducing atmosphere e.g. N2 + H2, Co + H2 or pure hydrogen, at a temperature between 1500 DEG and 2000 DEG  C. using preferably an iridium, a platinum, or a graphite crucible.  The above silicates are new magnetic materials, which are optically transparent in single crystal form, and have a Verdet's constant higher by a factor of 10 than previously known materials.  The materials find application in magneto-optical instruments (see Division H4) and in transformer cores and memory elements.
Patent GB-808230-A (GB)
Title: Improvements in or relating to the electrolytic separation of nickel from cobalt
Inventor: MERRE MARCEL DE
IPC: C25C1/08
Filed: 1956-08-27
Abstract: 808,230. Electrolytic refining of nickel and cobalt. SOC. GENERALE METALLURGIQUE DE HOBOKEN. Aug. 27, 1956, No. 26086/56. Class 41. A process for the separation of nickel from cobalt, both metals being contained in a primary solution, is characterized in that sulphides of cobalt, iron or copper are added to the solution, or formed therein, and the solution thus obtained is then subjected with stirring to electrolysis at room temperature. The sulphides may be prepared in the solution itself by adding sodium, calcium, or ammonium sulphide to the solution. The metals nickel and cobalt may be contained in the solution as sulphates or chlorides. The anodes may be of cobalt or iron or an alloy thereof; or may be of lead or graphite. The cathode may be of cobalt, iron, copper, lead or graphite. The solution may be strongly stirred during the electrolysis or the contents of the cell may be circulated by a pump. After electrolysis a precipitate containing nickel as a sub-sulphide together with a small amount of cobalt is separated by filtration and may be dissolved in dilute sulphuric acid.
Patent GB-916247-A (GB)
Title: Process for the production of melamine
Filed: 1959-07-30
Abstract: Melamine is prepared by heating fluidised urea, i.e. molten urea or urea dissolved in anhydrous ammonia, with anhydrous ammonia under autogenous pressure in the presence of an amalgam of mercury which metal is above hydrogen in the electromotive series of the metals. The reaction takes place in two stages, the first stage involving the formation of a mixture of metal salts of at least two of the compounds urea, guanidine, guanylurea, ammeline, and ammelide.  The concentration of the salts of the latter two compounds increases and that of urea, guanidine and guanylurea salts decreases upon heating and on further heating at above 130 DEG C. in the presence of anhydrous ammonia under pressure melamine is formed and may be recovered.  Aluminium, manganese, nickel, iron, tin, cadmium, barium, magnesium, calcium and copper are mentioned and aluminium is preferred.  The mixture of metal salts hydrolyse to the oxide and/or hydroxide or may be reacted with alcohols to form alkoxides. Examples describe the preparation of the salt mixtures and of melamine therefrom.
Patent GB-186256-A (GB)
Title: Improvements in or relating to combined electric switches and fuses
IPC: H01H85/26
Filed: 1921-10-05
Abstract: 186,256. Phi-Kappa Syndicate, Ltd., and Kluijtmans, J. J. J. M. Oct. 5, 1921. No Patent granted (Sealing fee not paid). Switches, quick-action.- A combined fuse a n d switch device has its box a divided into two parts by a rotatable disc i which carries the fuse above and the movable switch contacts below. The disc i is driven by a spindle d of square or other section and a snap action is caused by the arms e of a spring pressing against the sides of the spindle d. The fuse cord is wound on bobbins n, n<1> and extends round a boss l, Fig. 3, on the disc i. It is further held by conducting clips o, o<1> which lead the current in and out. A detachable operat,ing-knob f is held in position by spring fingers s, Fig. 5, on a disc r, which is held on the spindle d by a pin r<1> above and a spiral spring below.
Patent GB-1044705-A (GB)
Title: Method and apparatus for agglomeration
Inventor: SIGMAN THEODORE
IPC: A23P10/20
Filed: 1965-06-22
Abstract: 1,044,705. Dispersible agglomerates of tea &c. SALADA FOODS Ltd. June 22, 1965, No. 26365/65. Heading A2E Fine particles of a dry food powder, such as tea powder, are agglomerated by moistening the particles in a first zone, imparting circulatory movement to the particles about the centre of the zone whereby a portion is agglomerated and collects at the centre of the zone, the remaining fine particles moving outwards from the centre of the zone, removing the agglomerates from the centre of the zone and removing excess moisture from the agglomerates in a second zone. Fine particles of tea, delivered through a tube 28 on to a platform 18 in an atmosphere of at least 90% relative humidity at 90‹F. provided by the atomization of water droplets through a nozzle 30, are given a vibrational and limited lateral arcuate movement by a vibratory mechanism 26. The agglomerates formed are removed from the centre of the platform by a vacuum tube 32 and are then dried in a current of air at 120‹F. The particles remaining unagglomerated travel outwardly and upwardly along a spiral track 22 to be redirected on to the platform by the baffle 24; such a recirculation may be continued for 1“ hours.
Patent GB-1279563-A (GB)
Title: Improvements in or relating to epoxy-azido compounds
IPC: C08G69/48
Filed: 1970-06-01
Abstract: 1279563 Coating HERCULES Inc 1 June 1970 [18 July 1969] 26380/70 Heading B2E [Also in Divisions B5 C2 and C3] Polymers may be bonded to a primed substrate selected from siliceous materials, metals and other polymers using an epoxy-azido compound of general formula where R is a polyvalent organic radical, R' is H, alkyl, cycloalkyl, aryl or aralkyl, or together with the epoxidised carbon atoms forms part of a cyclo-alkyl radical in which the group -R-(A-N 3 ) m  is a substituent, A is -O.CO- or -SO 2 - and n and m are integers from 1-100. In example 8 polyethylene terephthalate tyre cord was coated with the epoxidation product of the azidoformate of the triallyl ether of pentaerythritol and then coated with a conventional latex adhesive which was then vulcanised with a rubber tire stock.
Patent GB-264497-A (GB)
Abstract: 264,497. Soc. Anon. la Trinidad. Jan. 12, 1926, [Convention date]. Cauldrons. - A portable apparatus for making tarry emulsions at the place of use has a tar heater 1 mounted on a single running frame with the emulsifier or mixer 2. The tar is delivered by a pump 6 to a weighing or measuring vessel 8 which together with a water tank 7 feeds the mixer 2. The tar heater and mixer are fitted with agitators driven by an engine 4. The emulsion passes from the mixer into a delivery tank 9.
Patent GB-224696-A (GB)
Title: Improvements in or relating to measuring pumps
IPC: B67D7/70
Filed: 1923-10-23
Abstract: 224,696. Lanser, A. Oct. 23, 1923. Measuring-devices; pipes; priming. - In a measuring piston pump for distributing liquids the delivery pipe 7 is primed up to a reference mark on a sight-glass 13 before delivery by means of a suction device such as an air pump 10 connected to the pipe 7 by a pipe 9. When the pump 4 is delivering to the pipe 8, the pipe 9 is cut off by a valve 11. Any liquid drawn over by the pump 10 is returned through a float chamber 15 to the suction side of the pump 4 or directly to the reservoir 1. The pipe 9 may have a float chamber 21 which cuts it off from the pipe 7 by means of a float valve 23 when the liquid reaches the chamber. In this form, the rotary valve 11 may be replaced by an automatic non-return valve.
Patent GB-480621-A (GB)
Title: Improvements in or relating to false twist mechanisms for use in drawing textile rovings
IPC: D01H1/00
Filed: 1936-09-30
Abstract: 480,621. False twist apparatus for roving. CASABLANCAS, F. Sept. 30, 1936, No. 26584. Convention date, Oct. 7, 1935. [Class 120 (ii)] In false twist apparatus for use in spinning and especially where the sliver or roving is subjected to two or more successive drawings with intermediate false twist, the twist tubes are mounted in sprocket wheels 3 driven by an endless chain and are mounted in an enclosed frame 1 which is reciprocated, the driving- wheel 6 being driven through a toothed wheel and a long screw 12 to permit the movement, or, as shown in Fig. 4, the driving-wheel 16 and a tension means 14, 15 may be mounted independently of the frame.
Patent GB-162591-A (GB)
Title: Improvements in cases or holders for cutlery or other edge tools
IPC: A47G21/14
Filed: 1920-09-18
Abstract: 162,591. Mowe, E. Sept. 18, 1920. Specially-shaped cases; cases made from special blanks; fittings, internal.-A case or holder for cutlery or other edge tools, particularly designed for holding a combined knife and fork for use by one-armed persons, is made from a blank shown in Fig. 1, bent along the longitudinal line 2, diagonal lines 3, 15, 16, 17 and transverse lines 18, 19, 20 to form a trough-like case, Fig. 2. The part 1 forms the base of the case, the front and rear sides 4, 5 being spaced apart at one end and brought close together at the other, while the upper edge of the case slopes from the end 8 to the end 9. The parts 8, 23 and 9, 10, 11 of the blank are folded inside the case to form pockets at each end for engaging the ends of the article A. A prolongation at the rear of the case forms a top 6 and closing-flap 7.
Patent GB-426337-A (GB)
Title: Improvements in or relating to electrical remote control installations
IPC: H02J13/00
Filed: 1933-09-28
Abstract: 426,337. Electric signalling and remote-control systems. SHEVLIN, J. T., 15, South Street, Finsbury, London.- (Siemens-Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin) Sept. 28, 1933, No. 26738. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 29, 1934.] [Class 40 (i)] To overcome disturbing influences of fluctuations in the control potential distribution in an electric signalling or remote control system using control potentials superposed on power mains, the resonance relays are provided with means operating in dependence upon the control potential obtaining at the point of connection of the relays to the mains so as automatically to suppress any excess control potentials or the action thereof upon the relays. The means suggested include connecting glow-discharge tubes in parallel with the relay windings using saturable core relays, using polarized relays with means to vary the polarizing effect, providing supplementary damping to the relays and dividing the flux of the relay cores.
Patent GB-235130-A (GB)
Title: Valves
IPC: F23N5/06
Filed: 1924-11-10
Abstract: 235,130. Eggleston, L. W. June 9, 1924, [Convention date]. Actuating - mechanism; thermally - actuated valves.-A, valve device particularly applicable for use as a thermostat to control the supply of gas to a water heater has a valve member supported by a pivoted arm actuated by lever mechanism acting through a tumbler spring. The valve washer 35 is supported by a valve member 33 carried by a pin slidably mounted in the bent end of a slotted lever 24. Rotation of the valve is prevented by a tongue 37 engaging the slot. Intermediate its ends the lever 24 has projecting knife edge pivots 29 adapted to engage V notches in a frame 19 carried by a detachable cap 7. The cap is positioned by dowel pins 8 and secured by screws 9. A spring 62 is connected to the free end of the lever 24 and to the bent end 61 of a second lever 54 supported by cars 55 from a pin 20. The spring is arranged diagonally across the levers as shown in Fig. 4, so that a bearing surface 24a on the lever 24 is always pressed against the frame 19. The bent end of the second lever is adapted to pass through the slot in the first lever so that as the second moves within the limits allowed by the stop pin 24. The spring first acts on one side and then on the other of the pivots 29 so that the valve is opened or closed with a snap action. The second lever is connected bv a link to a third lever 52 provided with an adjustable fulcrum, and in the form shown adapted to be operated by a pointed plunger carried by a thermal capsule. The adjustable fulcrum comprises a cross pin 51 mounted in vertical slots 49 in the frame 19 and in inclined slots 50 in an adjustable member 41. The member 41 rests on flanges 39 on the frame 19 is guided by a pin 48 engaging a horizontal slot 47, and is moved to and fro by a screwed spindle 43 provided with an indicating and operating handle 44. In the form shown in Fig. 2, the thermal capsule comprises a metallic bellows 75 connected at one end to a ring 73 supported by an internal bead on an outer vessel 64<a> having a flange 69 adapted to be clamped against the end of a nipple 10 by a coupling nut 67 which is also screwed externally for attachment to the apparatus in which it is desired to maintain a constant temperature. A volume of kerosene or other mineral oil is sealed in the capsule. The lower part of the bellows is provided with an integral head 76 adapted to be spun over a bead 78 on an internal hollow plug 77. Resting on a shoulder 79 on this plug is a two-part sleeve 82 having at its upper end a spring-supported abutment 84 adapted to engage the lever 52. In a modification the casing 64a is enclosed in a second casing through which liquid circulates, or it is heated by conduction. A passage 87 leads to a pilot burner, and the main valve may be provided with a valve-controlled bye-pa.ss 97 to keep the main burners alight.
Patent GB-750074-A (GB)
Title: Mount structure for electron tubes
IPC: H01J19/42
Filed: 1954-09-16
Abstract: 750,074. Thermionic-cathode tubes. RADIO CORPORATION OF AMERICA. Sept. 16, 1954 [Oct. 16, 1953], No. 26919/54. Class 39 (1). An indirectly - heated cathode 15 lies wholly between the limbs 18, 19 of a U-shaped support wire 17, one limb only of which is supported from the tube envelope; the support wire thus forms an electrical shield between the cathode and the surrounding anode when there is a high voltage difference. The heater shown is of folded form, the legs 32, 33 being connected by tags 34, 35 to the support wire 17 and a further wire 22. A lateral tag 36, which may be omitted, provides further support; and a tag 23 supports the other end of the cathode sleeve from the bend of the U. When the heater is a helix, Fig. 2 (not shown), only one bottom connection, to tag 35, is necessary, the other end of the helix being connected to the top tag 23. The diameter of the wire 17 may be equal to or greater than that of the cathode 15, so that the latter may lie wholly within the shadow of the limbs of the U-wire.
Patent GB-462610-A (GB)
Title: Improvements in prepayment meters for electricity, gas, and the like commodities
IPC: G07F15/08
Filed: 1935-09-30
Abstract: 462,610. Prepayment mechanism for meters. WRIGHT, N., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Sept. 30, 1935, No. 26991. [Class 27] In a prepayment meter the commodity side 51 of the quantity - differential C is driven through two adjustable transmitting mechanisms by a main shaft 27 geared to the shafts 2, 2a of the two mechanisms, the motions of which are summated or differentiated and the resultant movement transmitted to the differential. The shaft 27 is driven by an auxiliary motor comprising a spring 31 wound by a shaded pole motor 30, this motor being controlled by the meter through an escapement 35, 36. The shaft 2 carries an arm 7 on which is pivoted a pawl 10 put into driving engagement with a ratchet wheel 18 by a fixed stop 14 and disengaged by an adjustable stop 17 mounted on a locating disc 23 which is adjusted according to the fraction of rotation of the shaft 2 that is to be transmitted. The shaft 2a through a similar mechanism drives a ratchet wheel 18a, and the movements of the ratchet wheels 18, 18a are summated or differentiated by an epicyclic mechanism E, the resultant movement of the planet cage 41 being transmitted through gearing 45... 50 to the commodity sun-wheel 51 of the meter differential C. The locating disc 23 may be calibrated to adjust the price of commodity by steps of a penny per unit and the disc 23a by steps of one-eighth of a penny. The other sun-wheel 9 of the differential C is driven from the coin receiver through gearing 5. The planet cage 6 is secured to a shaft 52 provided with the usual devices for controlling a switch &c. A spring 54 surrounding the shaft 52 is provided to assist the spring 31 in driving the mechanism.
Patent GB-488635-A (GB)
Title: Improvements in and relating to electrical rectifiers
IPC: H01J13/04
Filed: 1936-10-05
Abstract: 488,635. Metal - vapour converters. HELLMUTH, F. H. Oct. 5, 1936, No. 27028. Void. Convention date, Oct. 3, 1935. Drawings to Specification. [Class 39 (i)] To obtain a positive characteristic the anode is arranged within the inner end of the anode arm. The anode may be located within a metal cylinder of which the outer end is perforated and the inner end is closed by a metal spiral. The ratio of the width of the spiral to the distance between adjacent convolutions is specified for various voltages. The cylinder may be mounted upon the anode lead by struts.
Patent GB-676937-A (GB)
Title: Three-position electric switch
IPC: H01H23/30
Filed: 1950-11-07
Abstract: 676,937. Retractive switches. PARSONS, J. B. Nov. 7, 1950. No. 27182/50. Class 38 (v). In a switch specially adapted for controlling a reversible motor, movement of the operating lever 14 from the central position shown in one or other direction connects a terminal 21 to a terminal 20 or 22. The lever 14 pivots about an axis 19 and carries a conducting sleeve 17 cut off diagonally at its lower end 18 so that counter-clockwise rotation of the lever brings the sleeve into engagement with the terminal 20 so completing a circuit through a spring 24, movable plate 23, sleeve 17 to terminal 20. Clockwise rotation of the lever brings the sleeve 17 into engagement with a spring-pressed conducting plate 25 so completing a circuit from 21 through parts 24, 23, 17, 25, 26, to terminal 22,
Patent GB-1326500-A (GB)
Title: Vehicle hydrodynamic brakes
IPC: F16D57/04
Filed: 1971-04-19
Abstract: 1326500 Hydrodynamic brakes; cooling DAIMLER-BENZ AG 19 April 1971 [18 April 1970] 27241/71 Heading F2E A motor vehicle has a hydrodynamic brake 10 comprising a fixed bladed member 11 and a bladed wheel 12 rotatable with the drive shaft of the vehicle; the brake 10 can be filled with oil by a pump 17 rotatable with the shaft via a regulating piston valve 19 which is actuable by the pressure developed in a braking system as controlled by a brake pedal 22, and a cut-off piston valve 15 associated with the brake 10 is adapted to open an external circuit of the brake 10 when the pressure at the inlet 16 (Fig. 1) or the outlet 13 (Fig. 3) exceeds a predetermined value and for closing the circuit when the pressure falls below that value. As seen in the diagrammatic representation of Fig. 1 the regulating valve 19 comprises three piston parts 23, 24, 25 and when pedal 22 is operated, a brake valve 21 causes a line 20 to be pressurized and piston part 23 is thereby moved to the left: piston part 24 cuts off a return line 27 from a line 18 to a sump 28 and the brake 10 becomes filled by way of outlet 13. Oil will also pass through a bore 29 in piston part 25 so that a space 31 also becomes filled with oil at the same pressure as in the brake 10, and the pressure in the brake 10 also acts by way of line 32 and throttling passage 33 on the right hand face of piston 34 to thereby open the external circuit of the brake 10 which circuit contains a cooler 14 to dissipate energy. When the pressure in line 20 is relieved the valve 19 returns to its original position by action of pressure in the space 31, the brake 10 empties itself by centrifugal action and the valve 15 cuts off the external circuit when the pressure at inlet 16 falls below a predetermined value. In the construction of Figs. 2, 3 brake 10, pump 17 and valves 19, 15 are contained in a common housing 35. The valve 15 has a piston part 38 loaded by a spring 39 which tends to keep inlet 16 closed while a further piston part 40 is subject, through a throttling passage 41, to the pressure at the outlet of the cooler 14 which corresponds to the pressure at the outlet 13 of the brake 10. Fig. 4 (not shown) illustrates a modification of the regulating valve 19 wherein the third piston part (25) is associated with a skirted auxiliary piston (42) biased by a weak spring (43). Space (44) at its right hand end is at zero pressure and when piston part (23) is subjected to pressure, the entire piston assembly is moved to the right to close return line (27) at once. Only then is pressure built up in space (46) corresponding to the space 31 of Fig. 1.