baber/WOPTO huggingface dataset:
Patent GB-1273553-A (GB)
Title: Improvements in closure means for casting ladles and like containers for molten metal
Inventor: FEHLING HANS REINHARD
IPC: B22D41/28
Filed: 1968-07-11
Abstract: 1,273,553. Metal pouring ladles. INTERSTOP A.G. 27 June, 1969 [11 July, 1968], No. 33027/68. Heading F4B. A slide valve 17 for a casting ladle 10 having a discharge orifice 16 extending through a refractory outlet block 13, a bush 14 and a bottom plate 15, comprises a slidable member 19 of high conductivity refractory materal surrounded by a support block 23 of low conductivity refractory material. The low conductivity material minimizes heat leakage when the valve is in its closed position so preventing solidification of the metal occurring in the orifice region located above the slidable member 19. The slide valve, which is movable between open and closed positions by an hydraulic device 18, includes a collector nozzle 21 having inner and outer parts 21a, 21b. Preferably the nozzle interior is of diamond-shape cross-section (see Fig. 2). The various parts of the slide valve 17 are carried in a cast iron carriage 24 slidable on guides 25 within a valve housing 26. The bottom plate 15 and the nozzle inner part 21a are made of high conductivity refractory material whereas the bush 14 and the outer nozzle part 21b are of low conductivity material. The joints R which extend into contact with the molten metal are filled with highly refractory mortar e.g. magnesite whereas the joints T not in contact with molten metal are filled with porous fine clay mortar.
Patent GB-1523167-A (GB)
Title: Dip moulding or coating apparatus
IPC: B22C13/08
Filed: 1975-08-08
Abstract: 1523167 Dip-coating workpieces PRECISION CASTING SYSTEM SA 8 Aug 1975 33159/75 Heading B2L [Also in Division B5] Wax patterns 12 to be dip coated in tank 48 are suspended from an L-shaped arm 28 carried by a carriage 30 reciprocable along a track 34 to a conveyor A from which the patterns are suspended. The arm 28 is rotatable about a shaft 45 by a motor 35 and the patterns are carried by a plate 14 rotatable about a shaft 53 carried at one end of the arm. The shaft 53 is rotated through chain 55 and gearing 51 by a motor 47 located at the other end of the arm to act as a counterbalance. The shaft 53 is carried by an assembly 26 vertically reciprocable along a shaft 20 itself rotatable about a central shaft 10 carried by the carriage. In use, the carriage is driven to conveyor A and the assembly pivoted about shaft 10 to enable the arm 28 to pick up patterns from the conveyor. The carriage then moves back to the tank 48 and the assembly is pivoted to bring the patterns over the tank and lowered to dip the patterns into the tank. During dipping the patterns are rotated via shaft 53 and rocked via shaft 45. After dipping the procedure may be repeated with another tank, and the carriage, assembly, and arm manipulated to return the now coated patterns to the conveyor A.
Patent GB-1302395-A (GB)
IPC: G06F3/0354
Filed: 1970-07-08
Abstract: 1302395 Measuring position SCIENCE ACCESSORIES CORP 8 July 1970 [11 July 1969 16 July 1969] 33171/70 Heading G4H [Also in Divisions H1 and H3-H5] A system comprises means producing an acoustic signal at the position of a stylus movable over a surface and means for determining the time between emission of the signal and reception at microphones provided for each dimension of stylus movement. The acoustic signal is produced by a spark gap 16 (see Division H1) mounted at the stylus tip 14, Fig. 1, and the sounds are received by elongated microphones 22, 24 comprising an aluminium bar carrying a polyester film 27, copper bar 29 and polyester film 32 which is metallized on the outside. This arrangement forms a capacitor (Division H1) which is variable by vibration of the film 32 as the sound waves impinge thereon. To determine the time lapse, trigger pulse generator 34, Fig. 2, operates the spark gap in stylus 32 and flip-flops 48, 50 which open AND gates 52, 54 allowing counters 56, 58 to count clock pulses from generator 60. On reception of the sound waves by microphones 28, 30, flipflops 48, 50 are reset stopping the counts which then represent the position of the stylus. With the flip-flops in this position gate 64 enables the counts to be read out to a computer 66 or cathode-ray tube 70 when micro-switch 45 in the stylus is activated. A further switch 47 is provided such that sparks are produced either continuously or only on operation of the switch 45. The trigger pulse generator, Fig. 5, comprises four capacitors charged to +V which on application of a pulse from generator 84, are connected in series through thyristors 98, 100, 102, the last being turned on by breakdown the first two by pulses applied to their gates. The four capacitors then discharge through step-up transformer 106 producing a high voltage spike. The generator 84 may be a monostable, oscillator or a computer output. The system may be extended by using three sheet microphones to a three-dimensional surface (Fig. 4, not shown).
Patent GB-683215-A (GB)
Title: Improvements in or relating to the manufacture of directional viewing screens for television and other purposes
Inventor: HOLMAN HERBERT EDWARD
IPC: G03B21/60
Filed: 1949-12-29
Abstract: 683,215. Projection screens. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 22, 1950 [Dec. 29, 1949], No. 33182/49. Class 97 (i). [Also in Groups V and XXII] A viewing screen for a television receiver is provided on one surface with a multiplicity of crossed cylindrical lenses 1 formed by moulding or pressing the surface of a sheet of transparent plastic, such as a methyl-methacrylate resin with a moulding tool (see Group XXII) having a multiplicity of curved surfaces which are complementary to the cylindrical lenses to be found on the viewing screen. There may be 8348 crossed cylindrical lenses per square inch of viewing screen. One surface of the screen may be made light-reflecting and the lenses may have a concave or convex curvature. Specification 666,222 is referred to.
Patent GB-492351-A (GB)
Title: Improvements relating to the prevention or extinction of fire
IPC: A62D1/00
Filed: 1936-12-04
Abstract: 492,351. Fire-extinguishing and fireproofing. DUFRAISSE, C. R. Dec. 4, 1936, No. 33308. Void. Convention date, Dec. 18, 1935. [Class 47 (ii)] Fires are extinguished or materials fireproofed by the use of substances having anti-oxygen, as distinct from blanketing or gas-developing, properties. The materials are used in finely powdered form and are evenly distributed, at low concentration, in a carrier medium such as air or in solution or suspension. Concentrations of five milligrams per square centimetre of the burning area, or of ten to one hundred grammes per litre of air, are mentioned. Amongst substances specified are simple and complex organic and inorganic salts of potassium, compounds of magnesium, nickel, cobalt, iron, antimony and phosphorus, salts of sodium and lithium, carbon, silicon oxide, &c. The substances may be used in combination, and the most active ones, such as potassium compounds, may be mixed with less active ones or with other powders such as sodium bicarbonate or kieselguhr.
Patent GB-961416-A (GB)
Title: Improvements in or relating to vibrators
IPC: E04G21/08
Filed: 1961-09-18
Abstract: 961,416. Vibratory mechanisms. A. H. CROUCHER. July 30, 1962 [Sept. 18, 1961], No. 33375/61. Heading F2X. A vibrator for consolidating concrete comprises a member 5 made of a light asbestos filled plastic and having a longitudinal recess in which a row of rollers 9 and balls 9a is accommodated, the member 5 being mounted in a bearing 6 at one end and being attached to a flexible driving shaft 1 at the other end. The rollers and balls are free to press radially outwards against the inner surface of a casing 3a. A sealing member 8 is provided at the end of the casing 3a which may be filled with a lubricant, such as molybdenum di-sulphide, and covered with a thin layer of PVC or rubber. A row of rollers or of balls may be employed and the member 5 may be lightened by a row of circular apertures.
Patent GB-805857-A (GB)
Title: An electric control system for a vehicle overdrive or underdrive mechanism
Inventor: MAY CLIFFORD FRANK
IPC: B60W30/18
Filed: 1955-11-22
Abstract: 805,857. Variable speed gearing. LUCAS (INDUSTRIES) Ltd., J. Nov. 16, 1956 [Nov. 22, 1955], No. 33376/55. Class 80 (2). The engagement of an over or under-drive associated with a variable-speed gear-box of a vehicle is effected by an electromagnet a controlled by a switch b, c which is adapted to be actuated by an electromagnet d. The current supply through a terminal o from the vehicle battery is controlled by a driver-operable twoway switch f for selection of the under or overdrive as required, an accelerator-operated switch i open when the throttle is closed or nearly closed to prevent the use of the under or over-drive in these conditions, and a flickaction two-way switch j adapted to be actuated by a striker n operable by or in response to movements of the hand-operated gear-change lever between positions 3 and 4 corresponding to third and fourth speeds. In operation with an overdrive the electromagnet d is energized to bring in the overdrive by closing momentarily the switch f on to the lower contact, the switch b, c being held by the current flowing therethrough. Movement of switch f to its upper contact short-circuits electromagnet d to release the overdrive. For a change from fourth speed to third the operation of the gear lever will close switch j momentarily on to its top contact to first bring in the overdrive for a speed between fourth and third. The overdrive can be cut out by actuation of switch f to give the third speed. When changing from third to fourth, if the overdrive is in action, it is first put out of action by the actuation of switch j.
Patent GB-1472855-A (GB)
Title: Autlmatic zeroing circuit
IPC: G01R19/165
Filed: 1973-07-13
Abstract: 1472855 Baseline drift correction ANALYTICAL INSTRUMENTS Ltd 15 July 1974 [13 July 1973] 33433/73 Heading G1U In a baseline drift correction circuit, a signal 1, Fig. 1, consisting of a succession of peaks on a slowly varying baseline, is applied to a capacitor 3, the right-hand plate of which is normally earthed via a switch 6, and to a differentiator 7 so arranged that when the rate of change of the input signal rises above a pre-set level - thereby indicating the beginning of a peak - timer 8 is set on to open the switch 6 and thereby allow the peak signal to pass to a meter 5, where it is displayed with respect to the baseline level existing immediately prior to the opening of the switch 6. The switch 6 is closed, thereby re-earthing the right-hand plate of capacitor 3, either when the timer runs out, or when the timer is reset by an output from a comparator 10 consequent upon the signal applied to the meter falling below a pre-set threshold level. A suitable comparator circuit is described, Fig. 2, (not shown) in which a normally 'on' transistor (11) is turned 'off' by the reduction in the signal as the peak appears, and is returned 'on' when the signal rises above a level pre-set by a potentiometer (13, 14), thereby producing a pulse which is amplified (12) and applied to the timer. In a modification, Fig. 3 (not shown), triggering of the circuit by spurious spikes is prevented by arranging that the timer is only turned on if both the rate of change of the signal and its actual level, exceed pre-set levels.
Patent GB-1423365-A (GB)
Title: Fuel control apparatus for a gas turbine engine reheat system
IPC: F02K3/10
Filed: 1972-06-21
Abstract: 1423365 Gas turbine engine re-heat fuel systems LUCAS INDUSTRIES Ltd 26 March 1973 [21 June 1972] 33843/75 Divided out of 1423364 Heading F1J The invention relates to a fuel control apparatus for a gas turbine engine re-heat system which comprises a pump 10, a throttle valve 11 responsive to a first servo-pressure signal PS 1 for controlling the delivery pressure PP of the pump, a first variable metering orifice (in the embodiment there are three, 17, 18, 19) for controlling fuel flow from the pump to a re-heat burner (20, 21, 22), means for driving the pump at a speed proportional to engine speed, and a servo-pressure control arrangement 81, Fig. 3 responsive to engine speed, by means of governor 87, and to the pressure drop PP-DP1 across the first metering orifice 17, for varying the said first servo-pressure signal PS1. The arrangement 81 comprises three valve spools 86, 101, 111, the fuel pressure DPI  being applied through line 80 so as to act on the left-hand end of the valve spools. The governor 87 also acts against the left-hand end of the valve spool 86. Fuel at pump delivery pressure PP acts against the right-hand end of valve spool 86. The valve spool 86 is connected by a spring means 88 to a further spool 89. Pump pressure PP is also applied to an internal passage 103 and the servopressure PS1 is derived therefrom through passage 94 in dependence on the axial position of the valve spool 86. The valve spools 101, 111 are respectively dependent on the difference in pressure DPI and DP2 and DPI and DP3. Servo-pressures S2 and S3 are derived from the spool valves 100 and 110 respectively and are communicated to the throttle valves 76, 78 of the metering assembly 14.
Patent GB-1420466-A (GB)
Title: Fuel metering systems
IPC: F02M17/06
Filed: 1973-07-17
Abstract: 1420466 Metering fuel ROBERT BOSCH GmbH 17 July 1973 [18 July 1972] 33881/73 Heading F1B A fuel metering system for I.C. engines comprises at least two constant level containers 2, 3 arranged to be filled to different levels with fuel, said containers being alternately or simultaneously connectible to a fuel line 24 by means of a valve 27 actuable in dependence on engine operating conditions, the line being adapted to be connected to supply fuel to an I.C. engine. The valve is operated electromagnetically and can be operated so that the fuel pressure in line 24 is any intermediate value between those due to containers 2 and 3, from which excess fuel overflows and passes by way of cistern 12 and valved outlet 13 to container 8 or fuel line 9. A pump 16 may be provided. In Figs. 2, 3 and 4 (not shown), different arrangements of supply and return fuel lines, with and without cistern 12, are used. In Fig. 5 (not shown), the constant level containers 2, 3 are replaced by float controlled cisterns (35), (36) and the return flow line is dispensed with.
Patent GB-171047-A (GB)
Title: Automatic cerium pocket lighter
IPC: F23Q2/08
Filed: 1920-12-01
Abstract: 171,047. Deniel, E., and Pique, E. Dec. 1, 1920. Pocket igniters, fric tional.-In a frictiona pocket lighter of the type in which opening of the lid causes rota tion of the friction wheel, the friction wheel 4 is mounted on the axle 3 about which the lid pivots and carries a ratchet wheel 13, the teeth of which are adapted to be engaged by a pawl 12 pivotally attached to the lid. Engagement of the pawl 12 with the ratchet-wheel is ensured, during opening of the lid, by a string or flexible band 7 attached to a projection on the pawl, which string passes through the lid, along a groove on the back, and is held taut by a spring 8 secured to the container 1. In a modification, shown in Fig. 6, a spring- influenced flexible band 28 passes along the top of the lid and is secured thereto at the front so as to be taut when the lid is closed. The flexible band bears on a projection 27 of a brake lever 26, which is thus caused to frictionally engage the friction-wheel 24 so as to cause rotation thereof during opening of the lid. As, with the lid in the closed position, the flexible band 28 is slack, the wheel is not rotated during closing of the lid. In a further modification, the brake lever 26 may be replaced by a pawl which is forced into engagement with a ratchet-wheel on the axle of the friction-wheel bv a flexible band arrangement similar to that shown in Fig. 6.
Patent GB-1020616-A (GB)
Title: Compositions containing tripolyphosphates
IPC: C01B25/41
Filed: 1962-09-05
Abstract: A detergent composition containing hydrated alkali metal tripolyphosphate is prepared by heat drying an aqueous slurry containing at least 5% trimetaphosphate and sufficient strong base to give 2 mole equ. OH- per mole of trimetaphosphate to be converted, which is preferably at least one-third of that present. The product may contain 10-75% tripolyphosphate, at least 60% of which is hydrated. The base may be an alkali metal carbonate, silicate, orthophosphate, oxide or hydroxide, or an alkaline earth metal oxide or hydroxide, or an organic quaternary ammonium hydroxide. The slurry may also contain other alkali metal phosphates, e.g. pyro-, tripoly-(Form II), tetrapoly-, hexameta-, and ortho-phosphates. Surface-active agents which may be included are Na and K salts of fatty acids, alkylonyl sulphonates, alkyl sulphates, fatty alkylamides, alcohol-alkylene oxide condensates, and alkylphenol-alkylene oxide condensates (examples given, which include propylene oxide condensates). Other substances which may be present are alkali metal hexametaphosphates, sulphates, silicates and perborates, carboxymethylcelluloses, polyvinylalcohols, and organic bleaching agents.  The process may comprise mixing the slurry, preferably at above 50 DEG  C., and adding the trimetaphosphate or base last, and heat drying at 120-375 DEG  C. in a steam or hot flue-gas heated drum drier or spray drier.ALSO:Hydrated alkali metal tripolyphosphate is prepared by heat drying an aqueous slurry containing at least 5% of an alkali metal trimetaphosphate and sufficient strong base to give 2 mole equ. OH- per mole of trimetaphosphate to be converted, which is preferably at least 1/3 of that present.  The base may be an alkali metal oxide, hydroxide, carbonate, silicate with SiO2/M2O ratio of less than 2, or orthophosphate; or an alkaline earth metal oxide or hydroxide; or an organic quaternary ammonium hydroxide.  The trimetaphosphate may be granules, flakes, or powder, and 80% should pass through 100 US sieve.  The slurry may contain at least 10% water, and other alkali metal phosphates, e.g. tripoly (form II), tetrapoly-, hexameta-, pyro-, and ortho-phosphates. The process, which may be continuous, comprises mixing the slurry preferably at above 50 DEG  C., and adding the trimetaphosphate or base last, then heat drying at 120-375 DEG  C. in a steam or hot flue gas heated drum drier, or spray drier. The slurry may also contain surface active agents, detergent builders, and bleaches; examples of which are listed.
Patent GB-1436123-A (GB)
Title: Distribition plate for high temperature fluidised bed treat ment apparatus
IPC: B01J8/44
Filed: 1972-07-20
Abstract: 1436123 Fluidized bed dryers; fluidized bed distributer plates YAN TONGEREN UK Ltd 6 July 1973 [20 July 1972] 34050/72 Headings F4B and F4G [Also in Division B1] A distribution plate for high temperature fluidized bed treatment apparatus (e.g. drying or calcining) comprises two skins 10, 11 defining with a peripheral wall an enclosed space, tubular inserts 12 extending sealingly through the skins, the coefficient of thermal expansion of the material forming the skin 10 supporting the bed being greater than that of the material of the other skin. In use, heated fluidizing gases at a temperature of 650‹ C. are fed to a plenum chamber on the underside of the plate and pass through nozzles 3 and nozzle caps 4 to effect fluidization. Fluidizing gases consist of combustion products mixed with dilution air which has first passed through the hollow distribution plate and out through conduit (8, Fig. 1, not shown). The skins 10, 11 are joined by the tubular inserts 12 being welded thereto and tubular nozzle stems 14 are pinned or dowelled to the inserts 12 in aligned holes 15 in the stems 14 and inserts 12. At the upper end each stem 14 has four rectangular cut-outs 16 which provide the gas discharge passages. Protection plates 17 are provided on the upper face of skin 10 and contact the outer periphery of the stem 14 to reduce leakage of fluidizing medium. A channel section member 18, is externally welded at 19, 20 to the upper and lower skins 10, 11 and internally welded at 21 at its junction with skin 10. The bottom flange 22 of member 18, a support flange 23 of the plenum chamber casing and the portion of the skin 11 sandwiched therebetween are provided with registering holes 24 for the fitting of sixty clamping bolts. Instead of, or additionally to the pins in holes 15 a bent lug arrangement may be provided. The distribution plate may be rectangular, square or circular in cross-section and the fluidizing chamber is of frusto-conical form. The skins may be of stainless steel.
Patent GB-491284-A (GB)
Title: An improved process for the recovery of type-metal and similar alloys
IPC: C22B7/04
Filed: 1937-12-09
Abstract: Type-metal or like alloys containing lead and either tin or antimony, or both, are recovered from the dross formed when re-casting them by fusing it with zinc chloride.  The dross and zinc chloride are fused together while stirring or, preferably, the dross is caused to pass downward through the molten salt.  The mixture may contain from 1 to 30 per cent of zinc chloride, in general from 5 to 10 per cent; and the temperature of fusion is not above 600 DEG  C.  One or more oxide-dissolving salts of low fusing-point, such as sodium bisulphate, may be mixed with the p  zinc chloride.  The composition of the type-metal is generally within the limits 55 to 90 per cent lead; 5 to 26 per cent antimony; 2 to 34 per cent tin; and 0 to 5 per cent copper.
Patent GB-430488-A (GB)
Title: Improvements in and relating to stenter clips
IPC: D06C3/04
Filed: 1933-12-05
Abstract: 430,488. Finishing fabrics. CLAY, J. A., c/o Clay & Atkinson, Harris Street, Bradford, Yorkshire. Dec. 5, 1933, No. 34129. [Class 42 (i)] Tentering clips.- The balanced feeler D is pivoted at D to a projection B at the rear of the faller F and co-operates with a fixed bar R, the pivot D<1> being to the front of and above the bar R when the clip is in the gripping position. The feeler may be recessed for the projection B as shown in Fig. 3. A lip L prevents the access of oil to the feeler. Reference has been directed by the Comptroller to Specifications 1507/00 and 1509/00, [both in Class 42].
Patent GB-1123686-A (GB)
Title: Improvements relating to safety harness
Inventor: ESNER MARK EDWARD
IPC: A44B11/25
Filed: 1965-08-11
Abstract: 1,123,686. Buckles. DYNASAFE EQUIPMENT Ltd. 11 Aug., 1966 [11 Aug., 1965], No. 34347/65. Heading E2A. A safety belt buckle comprises a body part 1 and a tongue 2 which can be secured together by a locking member 9, the locking member being manually movable to disengage it from the tongue and being biassed into engaging position by a spring which also acts on the tongue to urge it away from the body part 1. As shown, a pair of locking members in the form of catches are biassed to the position shown, in which they engage cut-outs at opposite edges of the tongue, a part of the spring consisting of a double torsion spring 11 accommodated in a bracket 6, and a loop 12 of the spring 11 projecting through a slot in the bracket to engage the inner end of the tongue 2. One end 5 of the body part 1 includes a non-rotatable but slidable bar 24 which cooperates with a fixed bar 23 by which one end 3 of a strap is adjustably connected to the body part.