baber/WOPTO huggingface dataset:
Patent GB-459586-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P7/06
Filed: 1935-04-03
Abstract: 459,586. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. April 3, 1935, No. 10372. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 5, 1935]. [Class 38 (iv)] [See also Group XXXVII] Speed.-For reducing the speed drop of a motor 1, due to increase of load, an auxiliary motor field 5 is connected to the supply in series with an auxiliary dynamo-electric machine 2 coupled to the motor 1, and opposing the supply voltage, the voltages of the supply and the machine 2 being equal when the motor 1 is running on no load. When the load on the motor increases, and its speed falls, the voltage of the machine 2 is reduced, and the motor field 5, opposing the main motor field 4, receives current, so that the drop in motor speed is reduced. A field regulator 6 for the motor 1 is coupled to a regulator 7 for the field 3 of the machine 2, so that the no-load voltage of the machine 2 is correct for the different speed settings. A regulator may be inserted in circuit with the field 5 simultaneously with adjustment of the speed, and the speed drop of the motor increased or reduced as the speed regulation increases. The arrangement also acts to oppose an increase of speed in the higher field-weakening range.
Patent GB-565211-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of moulded articles from graphite and like powders
IPC: B30B15/02
Filed: 1942-07-24
Abstract: 565,211. Moulding graphite, metal powders, &c., in plunger -and - mould machines. AKTIEBOLAGET HAMMARBYLAMPAN, and HEUBERGER, J. July 24, 1942, No. 10372. [Class 87 (ii)] As the plunger 2 descends and compresses a mass of graphite, 'hard alloy powders or other material contained in a mould 4, a helical surface 3 on the plunger bores into the material as the plunger revolves on bearings 1. Alternatively, the helical surface may be on the inside of the mould, the mould being rotatable, or helical surfaces may be on both the plunger and the mould, both being rotatable. The hollow article formed may be a mould for making twist drills or milling cutters.
Patent GB-573377-A (GB)
Title: Manufacture of 2:4:5-trichlorophenylacetic acid
IPC: C07C51/08
Filed: 1943-06-28
Abstract: 2 : 4 : 5-Trichlorobenzyl cyanide is prepared by boiling 2 : 4 : 5-trichlorobenzyl chloride with sodium cyanide and ethyl alcohol. This is hydrolysed by boiling with sodium hydroxide and ethyl alcohol and 2 : 4 : 5-trichlorophenyl acetic acid precipitated by acidification.
Patent GB-564337-A (GB)
Title: Improvements in the manufacture of cut-edged woven articles such as cut ribbons
IPC: D06H7/04
Filed: 1943-06-28
Abstract: 564,337. Cutting-machines for fabrics. CLAY & SONS, Ltd., C., CLAY, C. R., and HEASMAN, A. M. June 28, 1943, No. 10452. Addition to 544,379. [Class 31 (i)] The method of cutting fabrics to form ribbons described in the parent Specification is modified to form ribbons from petersham and like woven fabrics by employing a cutter disc B formed with a ridge A, the sides of which include an angle of 35-40 degrees, and which meet with an edge rounded to a radius of about .004". The ridge A extends #" from the body of the cutter into which it merges with a radius of <1>/16" on either side of the ridge. The petersham fabric may contain 34.8 per cent of cellulose acetate and 65.2 per cent cotton.
Patent GB-1198977-A (GB)
Title: Silencing System for Pipes Carrying Fluids
Inventor: DUTHION LOUIS
IPC: F02C7/045
Filed: 1969-02-27
Abstract: 1,198,977. Gas turbine engine air intake ducts; silencing gaseous currents. BERTIN & CIE. Feb.27, 1969 [Feb.29, 1968], No.10495/69. Headings F1B and F1G. The invention relates to a system for silencing pipes or ducts such as the air inlet duct of a gas turbine engine, in which a plurality of soundproofed flap members are provided extending longitudinally of the duct, the flaps being so mounted that they can either be moved to an operative position in which they divide the duct into a plurality of soundproofed ducts, or into an inoperative position in which they are retracted. In a first embodiment a cylindrical duct 2 is mounted in the duct 1, the duct 2 having a cylindrical tubular member 6 mounted therein in bearings 7, the member being rotatable by shaft 11 and gearing. A flexible member 15 in the form of a spiral sheet is secured at the inner end to the tubular member 6 and at the outer end to the duct 2, the flexible member being movable by rotation of the member 6 between an inoperative position shown in Fig. 1 and an operative position shown in Fig.3. The member 15 comprises a flexible sheet 18 with a layer of sound absorbent material 19 at either side thereof and perforated sheets 18a enclosing the layers 19. Short flap members 17 are resiliently connected to the member 15 at 23, each flap member comprising a perforated plate 17, a layer of sound absorbent material 20 and a perforated cover plate 21 retained by members 22. In the operative position, the flaps 17 together with the member 15 form a plurality of sound-proofed ducts whereas in the inoperative position the flaps are substantially closed up. In a further embodiment a plurality of flap members 44 are mounted at their inner and outer ends 43, 42 in a J-shaped guide 31 and a circular guide 30 respectively, the flaps being shown in the operative position in Fig. 10 in which they form a plurality of sound-proofed ducts 49. The flaps are movable by means of a system of cables to a retracted position as shown in Fig. 8 in which the duct 2 is not divided into chambers 49. A further embodiment is described in which the flap members in the operative portion project radially into the duct so as to provide a series of sound-proofed chambers.
Patent GB-1172642-A (GB)
Title: Oscillators.
IPC: C03B1/00
Filed: 1968-03-05
Abstract: 1,172,642. Tuning oscillators; automatic frequency and phase control. KRUSE-STORKE ELECTRONICS. 5 March, 1968 [22 May, 1967], No. 10503/68. Headings H3A and H3T, An oscillator comprises a plurality of voltage variable impedanoes for determining the frequency, means applying a first voltage to all the elements for coarsely varying the frequency and means applying a second voltage to less than all for finely adjusting the frequency. The Figures show a push-pull oscillator comprising including a resonant line structure formed from an inductive elongated central member 12-18 in an enclosure and connected at its ends to the bases of transistors 21 and 22. The inductive member is tuned by the collector-to-base capacitances and the base-emitter and base-collector capacitances provide coupling to the emitters. Adjustment of tuning is effected by two back-toback pairs of varicap diodes 15, 16 and 17, 18 and adjusting voltage is applied through chokes 40 and 44. When the voltage is positive the diodes are forward biased and they act as conductors. When the voltage is substantially negative they act as variable capacitors. At values of voltage less than the oscillation voltage the diodes swing between capacitive and conductive states and accordingly have an intermediate range of effective capacitance. Fine tuning is effected by a voltage applied at 46 to the two inner varicap diodes 16, 17 only. The circuit includes also damped chokes 45, 49, 49<SP>1</SP>, 57, 57<SP>1</SP> and a strip line output coupling 30 located on one wall of the enclosure (Fig. 2, not shown). It is stated that a sweep voltage could be applied to the coarse tuning input and a phase or frequency control voltage to the fine tuning input.
Patent GB-329104-A (GB)
Title: Improvements in or relating to automatic road signalling apparatus
IPC: G08G1/095
Filed: 1929-04-05
Abstract: 329,104. Brooks, J. G., Collins, C. W., and Collins, A. April 5, 1929. Road signals.-Colour signals at cross-roads with or without additional signs such as " stop," " care," " go," are automatically changed by a spring or weight motor through gearing timecontrolled by a member driven by a clookwork motor. The apparatus is contained in a standard a having four windows c<1> - - - c<4> at which are intermittently displayed the colour signals produced by lenses d<1> - - d<8> in a casing d containing an oil lamp being intermittently rotated by a shaft e. An amber lens with a red central spot may be followed in turn by a red lens, an amber lens with a green central spot, and finally a green lens. The " stop &c. signs are simultaneously rotated by a shaft h on the casing d. The shaft e is driven by a spring motor through gearing one member q of which has a peg adapted to arrest the rotation of the spindle l when obstructed by a lever n<4> which is under the control of a cam plate r driven by a clockwork motor at a predetermined speed. The cam plate r rocks a lever p<2> and with it a lever p<1>, which rocks a lever n<3> and with it the lever n<4> out of the path of the peg q, causing at the same time a lever n<2> to move clear of a slot n<1> in a cam disc n on the spindle which can thereby rotate oneeighth of a circle, whereupon the pawl n<2> enters. the next slot and the lever n<4> moves into the path of the peg q, and stops the motor. By this arrangement the " caution " signals are automatically set for five seconds and the " stop " and " go " signals for forty seconds each. To enable the apparatus to be readily removed and replaced in the correct position the base b is provided with spaced dowel pins b<3> entering recesses in a plate secured to the ground. Two or more such apparatus may work synchronously.
Patent GB-513286-A (GB)
Title: Improvements in or relating to metering equipment for telecommunication exchange systems
IPC: H04M15/38
Filed: 1938-04-06
Abstract: 513,286. Automatic exchange systems. STANDARD TELEPHONES & CABLES,Ltd., and WRIGHT, E. P. G., April 6, 1938, No. 10563. [Class 40 (iv)] In order to determine the charge for a call in monetary' values, two switches SF, PF recording shillings and pence are set by marking from a switch T which records the duration of the call and of which the operative wiper is chosen in accordance with the tariff. The switches SF, PF close circuits for controlling the printing of the charge. Some of the wipers of T correspond to two tariffs, one being double the other, and this is compensated in SF, PF by the provision of alternative controlling wipers. The apparatus is associated with a junction at the end of a call by a switch CF and the switch T takes up the setting of a duration switch TT in the junction circuit. Relay OST energizes in position 5 of sequence switch S, and with the assistance of the switch T (wiper 9) the originating time of the call is computed and printed, as described in Specification 513,228. Relay OSS energizes and controls the advance of T to the end of a 3-minute period if the tariff is one for which the charge is calculated on a 3-minute basis. The tariff is determined in the manner described in Specification 513,285 and the operated tariff relay connects up one of wipers 3-8 of T. Switches SF, PF take up positions marked by T and close marking circuits for printing two shillings digits over wipers 5, 7 or 6, 8 of SF and one pence digit over wiper 7 or 8 of PF. These circuits in positions 9,10, 12 of S control the setting of the printer switch PS, whereupon the printer magnet PM operates. In position 11 a fixed marking causes an oblique stroke to be printed between the shillings and pence.
Patent GB-1194941-A (GB)
Title: Egg White Composition, method of preparing and process Utilizing same
Inventor: SEBRING MICHAEL
IPC: A23L15/00
Filed: 1968-03-05
Abstract: 1,194,941. Whippable egg white composition. ARMOUR & CO. 5 March, 1968, No. 10650/68. Heading A2B. A composition comprises egg white and sufficient guar gum to reduce the whipping time of the white. The white may have been spray-dried and the gum dispersed throughout, for example by co-drying, or by blending in the dry state. Up to 10 wt. per cent. of gum may be present on a solids basis. The composition may be used in the manufacture of meringues, gateaux, and icing.
Patent GB-621502-A (GB)
Title: Improvements in or relating to the control of aircraft
IPC: G05D1/00
Filed: 1946-04-08
Abstract: 621,502. Fluid-pressure servomotor-control systems. DUNN, R. W., SUDWORTH, J., BYASS, J. B., FENN, A. E., and BROWN, G. W. April 8, 1946, No. 10764. [Class 135] [Also in Group XXXVII] In an automatic pilot for aircraft in which a gyroscope has associated therewith a member mounted and connected for displacement in relation to a second member with deflection of the gyroscope about at least one axis, so that the two members will be brought into contact with one another to modify a safety or warning circuit whenever their relative displacement exceeds a predetermined amount, the second member is mounted and connected for followup movement, in a direction in which the first member is displaced, with a corresponding control surface of an aircraft so that modification of the safety or warning circuit will depend upon time lag between deflection of the aircraft about the axis and the corresponding control surface adjustment. Preferably the safety or warning circuit serves, when so modified, to actuate a warning device and to render the automatic pilot inoperative. As shown, a gimbal ring 32 carries an arm 37 which is connected by a link 38 to an arm 39 pivoted to a bracket 41 fixed to the other gimbal ring 34, and ball-jointed to a control valve member 43 for the servomotor 'which actuates the control surface, e.g. the elevators. The control valve body 45 which is mounted in guides 46 permitting follow-up movement imparted thereto from the control surface through a crank 47 and link 48 carries, on a bracket 55, a switch 54 for modifying the safety or warning circuit. The switch is actuated by an arm 52, Fig. 4, fulcrumed at 53 and carrying a screw 51 with a conical head 50 which coacts with a member 49 carried by the arm 39 and having a rectangular opening, whereby the switch 54 is actuated only if the time lag between displacement of the gyroscope about its axis 33 and the corresponding control surface adjustment is sufficient to allow one side of the rectangular opening in the member 49 to contact the head of the screw 51. Deflection of the gyroscope about the axis 35 in excess of a given amount will also actuate the switch, the actuation in this case, however, being independent of the rate of such deflection. In cases where the automatic pilot may be over-ridden by a human pilot applying sufficient force to a control column, such action by the human pilot will, if sufficiently vigorous, automatically render the automatic pilot inoperative. According to the Provisional Specification the switch may be actuated by a rate gyroscope spring restrained against deflection about the axis of response, or by an accelerometer, irrespective of whether or not an automatic pilot is employed. Specifications 365,186, 365,187, [both in Group XXXIII], and 600,901 are referred to.
Patent GB-167738-A (GB)
Title: Improvements in the process of separating oils
IPC: C10G33/04
Filed: 1921-04-13
Abstract: Oils are recovered from solid, liquid or gaseous mixtures containing them, and particularly from acid and aqueous sludges, such as basic sediments, by agitation with comminuted carbon preferably fine enough to pass through a sieve having 100-200 meshes per square inch, in presence of water.  Suitable proportions are 2 parts of carbon to 1 part of oil.  The agglomerated oil and carbon are separated from the water, in which solid impurities remain suspended, and are either used as fuel or separated by low-temperature distillation, the carbon being recovered either in its original state or in the form of coke.
Patent GB-577039-A (GB)
Title: Improvements relating to liquid-fuel burners and the like
IPC: F23D11/24
Filed: 1941-08-25
Abstract: 577,039. Liquid-fuel burners. POWER JETS, Ltd., JOYCE, J. R., and ANGLO-SAXON PETROLEUM Co., Ltd. Aug. 25, 1941, No. 10836. [Class 75 (i)] [Also in Group XXIX] A screwed cap 6 on the forward end of the body 1 of a liquid fuel burner or similar spray device secures in position an orifice plate 7 and the flanged end 8A of a cylindrical chamber 8 fitted with a spring-pressed piston 9 controlling the flow of fuel through tangential ports 8C to the discharge orifice 7A in the plate 7. Complete closure of the ports 8C by the piston 9 at minimum fuel pressure is prevented by a-shoulder 9a on the piston engaging a step in the chamber 8 and the movement of the piston is limited as the fuel pressure increases by the engagement of the piston with a plug 11 at the rear end of the chamber 8. Leakage past the piston is returned through an axial bore 9B to the vortex space. Fuel is supplied to the clearance space between the chamber 8 and body 1 through a union 3 fitted with a lightly loaded spring check valve 4. A cylindrical filter 5 is interposed between the valve 4 and chamber 8. The burner is secured by a collar 2B in a shrouding 2 provided with a mounting flange 2A. The provisional specifica. tion states that the orifice plate and chamber may have differential areas to retract fuel from the vortex space on the supply pressure falling.
Patent GB-865435-A (GB)
Title: Improvements in or relating to screens adapted to give protection against neutrons
Inventor: REISSNER EDGAR WILHELM
IPC: G21F1/12
Filed: 1956-04-10
Abstract: 865,435. Laminates. FACTORIES DIRECTION Ltd. April 8, 1957 [April 10, 1956], No. 10895/56. Drawings to Specification. Class 140. [Also in Groups XXVIII and XL (a)] A screen adapted to give protection against thermal and fast neutrons comprises layers of a hydrogen carrier interleaved with boron-containing layers each of which comprises a number of sheets of synthetic-resin impregnated paper or other material alternating with layers of a granular boron compound held in synthetic resin or other suitable adhesive material. The hydrogen carrier may comprise wood veneers densified by a pressure of about 3000 lb/in.<SP>2</SP>, a solid paraffin, or polyethylene. The granular boron compound may be boron itself or boric oxide. The boron-compound-bearing layers may each comprise about 25 layers of paper impregnated with a phenol-formaldehyde resin alternating with layers of boron compound bound by the phenol-formaldehyde resin. The laminate may be faced with plywood. According to the Provisional Specification, the interleaving sheets may be of asbestos or metal, other loading materials may be used in place of the boron compound, and the finished screen may be in the form of a tube.
Patent GB-455089-A (GB)
Title: Improvements in, or relating to, furnaces or apparatus for use in the heat-treatment of metals
IPC: C21D9/663
Filed: 1935-04-09
Abstract: 455,089. Metal - heating furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd., LOBLEY, A. G., and ROBIETTE, A. G. E., Tyburn Road, Erdington, Birmingham. April 9, 1935, No. 10909. [Class 51 (ii)] In a furnace for annealing metals in a protective atmosphere provided with a fan for circulating the atmosphere, during the heating and cooling periods, through the charge and over heating and cooling elements respectively, the charge container c, on which are mounted electric heating elements e, the fan d and water or like cooling tubes m are all enclosed in a lift-up bell b which is formed with an internal flange b2 adapted to engage with a compressible ring g so as to isolate, during the heating period, the fan d and gas-circulating space f from the cooling chamber i. The ring g is carried on a partition h which is formed with apertures h<1> adapted to be opened and closed by externally-operated dampers h<2>, h<3>, and is of such dimensions as to provide an annular space through which the atmosphere gas may pass when the seal b<2>, g is broken by raising the bell b. In the form shown, the latter has an inclined lower edge resting on an inclined roller track o ; by turning the bell about its vertical axis it is raised a distance sufficient to break the internal seal. b<2>, g but not the external one n.
Patent GB-1039745-A (GB)
Title: Improvements in and relating to the welding or embossing of plastics sheet material
IPC: B29C65/02
Filed: 1963-03-20
Abstract: 1,039,745. Embossing. C. GROS. March 19, 1964 [March 20, 1963], No. 10968/63. Heading B6J. [Also in Division B5] In an embossing process, a colorant is applied to the embossing die or roller and transferred to a single or laminated sheet simultaneously with dielectric heating of the sheet to form the embossed design. In one example, the layers of a laminated sheet, comprising upper and lower layers of plastics material and a middle layer of foamed plastics material, are welded together along lines by means of a suitable highfrequency heating means, e.g. a die or a roller to which a colorant has been applied, the quilt lines of the finished sheet thus being formed in a different colour to the rest of the sheet. The colorant may be gold or bronze paint or a non- metallic paint or ink and may be sprayed, brushed or rolled on to the heating means. A design in two colours may be formed by using two suitably coloured and embossed heating means.
Patent GB-1214336-A (GB)
Title: Television system
Inventor: OLSSON TORE BERTIL REINHOLD
IPC: H04N5/33
Filed: 1968-03-06
Abstract: 1,214,336. Television. BOFORS A.B. 6 March, 1968 [6 March, 19671, No. 10972/68. Heading H4F. In an infra-red television system in which an optical scanning system is used, a mirror drum P is used to provide the line-by-line scanning and, together with a photo-electric system, comprising light source K, lenses L 1  and L 2  and photo-cell F, to generate synchronizing pulses for the sweep generator of the display cathoderay tube. A tilting mirror provides the vertical scan. The photo-electric system comprises a filament lamp K, lens L 1  collimating the light which is reflected from a one piece steel mirror drum P described in Specification 1,192,282 through condenser L 2  into photodiode or photoresistor F. Either the detector is very small or is associated with a narrow slit aperture such that in one rotation of the mirror drum P, light reaches the detector at only one instant of time for each face of the drum. The output of the detector is a series of pulses which are amplified and whose leading edges are used to trigger the sweep generator so that the latter produces a sawtooth waveform for each triggering pulse. The amplifier D and generator S may comprise valves or transistors.
Patent GB-672439-A (GB)
Title: An improved mowing machine
IPC: A01D34/42
Filed: 1950-05-04
Abstract: 672,439. Operating clutches. FORD, A. J. May 4, 1950, No. 11066/50. Class 80 (ii). [Also in Group I] A clutch, as shown in Figs. 6, 7, is provided in a rotary-blade mowing machine in the drive between the shaft 1 of the ground wheels and the blade spindle 7, the clutch being operated by trip means released manually or automatically on overload. In the form shown, chain drives 28, 32, Fig. 3, serve to rotate the blade spindle 7 from the wheel-shaft 1 through the clutch 37. The chain 32 drives a member 34 carrying arcuate pawls 35 which engage arcuate recesses 36 in the spring-pressed member 37 which can slide on the spindle 7 when the clutch is disengaged by a hand-operated turnable shaft 56, arms 46 on which engage a groove 45 on the member 37. The shaft 56 can be turned to release the clutch by a Bowden control 78, Fig. 12, acting on a lever 79 engaging an extension arm 57a on the shaft, and a trip lever 74, operated by a Bowden control 77, serves to hold and release the arm. Automatic release of the clutch due to overload is effected by a straightening of the chain 32 against a lever 59, Fig. 3, connected to a spring 60. The lever is connected to a slidable member 61 slotted to engage a pin on the shaft 56,