baber/WOPTO huggingface dataset:
Patent GB-329480-A (GB)
Title: Improvements in or relating to an automatic stop and change over for moving picture projectors
IPC: G03B21/43
Filed: 1929-04-25
Abstract: 329,480. Fenner, H. H., and Silvis, R. E., April 25, 1929. Kinematograph apparatus. - Pairs of contacts 13, 14, and 15, 16, are provided above and below the gate of a projector, and are respectively in circuit with solenoids 18, 23, so that, when the film passes from between them, change-over is effected, or a cut-off shutter is operated and the motor circuit is opened. The cut-off shutter 4 is pivoted, and is held open during projection by a solenoid 6 connected in parallel with the motor 17. Engagement of the contacts 15, 16, due to breakage of the film, energizes the solenoid 23 and opens the circuits of the motor 17 and solenoid 16. Passage of the end of the film from between the contacts 13, 14 completes the circuit of the solenoid 18, and its armature moves to open the circuit of the motor 17 and close the circuit of the motor 20 of the second projector.
Patent GB-574398-A (GB)
Title: Improvements in piezo-electric frequency-control devices
IPC: H03H9/09
Filed: 1943-08-11
Abstract: 574,398. Piezo-electric crystals. GENERAL ELECTRIC CO., Ltd., and LEWER, S. K. Aug. 11, 1943, No. 12986. [Class 40 (v)] A piezo-electric element suitable for precise frequency control comprises a bevelled circular plate 1, for example AT or BT cut quartz, held by a ring 4 against a circular plate electrode 2. The upper electrode 3 is in the form of a. bar extending diametrically across the crystal and arranged for rotation on a journal 3<1> about an axis 5 perpendicular to the centre of the crystal. By rotating the electrode 3 a small frequency adjustment can be made, the maximum variation of frequency being covered by a rotation through 90 degrees.
Patent GB-684508-A (GB)
Title: Improvements in or relating to spectrophotometers
IPC: G01J3/51
Filed: 1950-05-24
Abstract: 684,508. Photo-electric spectrophotometers. EVANS ELECTROSELENIUM, Ltd., and COLLINS, G. C. May 24, 1951 [May 24, 1950], No. 13036/50. Class 40 (iii). The colour content of a surface is determined by means of a portable unit placed on the test surface, the unit comprising a light source directing light on to the surface, a photo-cell receiving this light reflected from the surface and a filter carrier with a number of filters, any one of which may be placed in front of the cell. As shown, the unit comprises a base 7 of insulating material on which is mounted between side-plates 11 an inclined partition 10 carrying a light source 3 and a photo-electric cell 1. Light from the source passes through an aperture 8 in the base and is reflected from the surface of the test material, on which the base 7 rests, to the photo-electric cell. The lamp-holder is supported on three springs 36 on screwed rods 34. The height of the lamp-holder is adjusted by knurled nuts 37. A boss 14 in the partition 10 carries a lens 4, to focus the light on to the test surface, and a sheet of heat-absorbing glass 15. The photo-cell 1 (Fig. 4) is supported in recesses in insulating blocks 38 in which it is clamped by a block 40. A spring 43 between block 40 and the top of the cell provides one of the cell connections. The cell is mounted above the aperture in the base on pillars 39. The filters are carried in a holder 5 which rotates on a pin 20 passing through the partition. There may be nine narrow band spectrum filters or a different holder carrying three " Tristimulus " filters may be used. To enable withdrawal of a holder the partition has a slot 18. At the end of the slot is a recess 19 in which the head 22 of pin 20 engages. A spring 24 compressed between the filter holder and the other end of the pin 20 normally holds the filter holder in frictional engagement with the partition. When withdrawing the holder, the head 22 is pressed out of its recess and the pin slid out along slot 18. The head 22 is provided with two flats which slide in the slot 18. The edge of the filter holder is knurled and projects through the casing 17 enabling selection of any filter. A spring- loaded ball engages depressions in the underface of the disc thereby locating successive filters accurately in the light path. To divide the instrument reading by two, a neutral filter is provided. This filter is mounted in a plate 25 which is spring-loaded so that the filter normally lies in the light path but may be moved out of it 'by an extension of plate 25 which projects to the outside of the casing.
Patent GB-116815-A (GB)
Title: Improvements in Stoves or Radiators Heated by Gas or Oil.
Inventor: WILLIAMS PERCY FREDERICK
IPC: F24C1/00
Filed: 1917-09-12
Abstract: 116,815. Williams, P. F. Sept. 12, 1917. Gas and oil stoves.- To conserve the heat within the casing, a shield or baffle d is provided near the top, over which the hot air and products of combustion p a s s and descend to a " downpressure trap " H consisting of a tube with upturned ends fitted w i t h an adjustable damper I.
Patent GB-423918-A (GB)
Title: Improvements in or relating to the pickling of metals and the like processes
IPC: C23G1/06
Filed: 1933-05-04
Abstract: The dispersion of an inhibitor in a dilute acid bath for cleaning or pickling metals is improved by adding to the bath saponin or substances containing saponin, e.g. soap bark obtained from plants such as soapwort, quillaia, soaproot, bruisewort &c. The soap bark or saponin is preferably mixed with the inhibitor before adding to the bath, for example ground soap bark and salt may be mixed with sulphurized quinoidine, di-o-tolylthiourea, or a mixture of sulphite cellulose waste and a condensation product of an amine dithiocarbamate and an aldehyde.  The cleaning or pickling acid may be sulphuric, hydrochloric, an organic acid such as acetic or formic, or a mixture of hydrochloric and nitric acids.  Other types of inhibitors referred to are sulphonated residues from petroleum and from coal distillations, lignin sulphonic acids, thioureas, degradation products of albuminous substances, alkaloids, complex condensation products of aldehydes and amines, complex reaction products of hydrogen sulphide or carbon bisulphide or both on amines or aldehydes or both, high molecular weight cyclic nitrogenous bases, pyridine bases, and organic phosphorus compounds.ALSO:The dispersion of an inhibitor in a dilute acid bath for cleaning or pickling metals is improved by adding to the bath saponin or substances containing saponin, e.g. soap bark obtained from plants such as soapwort, quillaia, soaproot, bruisewort, &c. The soap bark or saponin is preferably mixed with the inhibitor before adding to the bath; for example ground soap bark and salt may be mixed with sulphurized quinoidine, di-o-tolylthiourea, or a mixture of sulphite cellulose waste and a condensation product of an amine dithiocarbamate and an aldehyde.  The cleaning or pickling acid may be sulphuric, hydrochloric, an organic acid such as acetic or formic, or a mixture of hydrochloric and nitric acids and other types of inhibitors referred to are sulphonated residues from petroleum and from coal distillations, lignin sulphonic acids, thioureas, degradation products of albuminous substances, alkaloids, complex condensation products of aldehydes and amines, complex reaction products of hydrogen sulphide or carbon bisulphide or both on amines or aldehydes or both, high molecular weight cyclic nitrogenous bases, pyridine bases, and organic phosphorus compounds.
Patent GB-1193682-A (GB)
Title: Improvements in and relating to Collision Avoidance Systems
Inventor: STANSBURY THOMAS ALBERT
IPC: G01S13/933
Filed: 1967-03-21
Abstract: 1,193,682. Aircraft instruments. T. A. STANSBURY. 21 March, 1967, No. 13084/67. Heading B7W. [Also in Division H4] In a collision avoidance system, a computer in a first craft controls warning means to produce an indication positively identifying the direction of a manoeuvre required to avoid a second craft and the computer is fed with one of a plurality of different combinations of at least two but not more than four of the parameters: instantaneous altitudes of the two craft, their relative bearing, their courses, the distance between them, and their velocities; further restrictions on the different combinations are specified. A system utilizing all the parameters is the matter of Specification 1,193,684 and one embodiment thereof consists of, on the first craft, the apparatus shown in Fig. 1 and all aircraft carry transponder apparatus referenced 10 to 12, 14 to 22, 24, 30 to 32 and 34. When an interrogating pulse is received by omnidirectional aerial 18 the altitude A, course C and speed V from sensors 10, 20, 30 are transmitted from aerial 19 as corresponding binary codes modulated on to respective sub-carriers. Interrogating pulses are transmitted from an aerial 43 and the modulated reply pulses from the second aircraft are received by a rotating beam aerial 44, the data A 2  (suffix 2 signifying the second aircraft), C 2  and V 2  being extracted by respective detectors 47 to 49 and applied to a computer 50 together with the corresponding first aircraft data A 1 , C 1 , V 1 . The relative bearing B of the second aircraft is obtained from the direction of aerial 44 at the instant of receipt of the reply pulse and the distance D is given by the interval between interrogating and reply pulses. A binary computer utilizes relative altitude A<SP>1</SP> binarily quantized (i.e. greater or less than 700 ft.), relative bearing B quantized into six sectors B 1  to B 6 , Fig. 3, and relative course C<SP>1</SP>, relative speed V<SP>1</SP> and distance D quantized into 4, 3 and 3 ranges, respectively, Fig. 2 (not shown). The collision warning signal (i) indicates the bearing sector occupied by the dangerous, second craft by illuminating a corresponding sector panel 227 to 232 on an instrument, Fig. 4, and (ii) illuminates either the climb or dive arrow 141, 142 on that instrument. In embodiments of the present invention computers derived from that above utilize (i) all but the distance between the two craft, (ii) all but relative speed, Fig. 5 (not shown), (iii) all but relative speeds and courses, Fig. 6 (not shown), (iv) all but relative speed and distance, (v) relative altitude and bearing, and (vi) all but distance, Figs. 7 and 8 (neither shown).
Patent GB-575380-A (GB)
Title: Improvements in and relating to the production of ethylene glycol
IPC: C07C31/20
Filed: 1940-08-16
Abstract: Ethylene glycol is produced by the catalytic hydrogenation of a glycollic acid ester in the vapour phase under superatmospheric pressure.  The temperature and pressure are preferably so chosen that products do not condense on the catalyst.  Pressures of 10-1000 atmospheres are mentioned.  Suitable catalysts are copper, zinc oxide, catalysts suitable for methanol synthesis from carbon monoxide and hydrogen, and composition comprising copper, tin, silver, cadmium, zinc, lead or an oxide or chromite of one of these metals together with an oxide or chromite of barium, manganese or magnesium. They may be prepared by precipitation or fusion; for instance sulphur-free copper oxide and magnesia may be fused together in an electric furnace at 1000-1200 DEG  C., and instead of magnesia there may be used an oxide of an alkaline earth, nickel, iron, cobalt, silicon, manganese, chromium, zinc, cadmium or silver; the catalyst is reduced in hydrogen before use.  A carrier may be employed. Methyl, ethyl, propyl, isopropyl, butyl, isobutyl, amyl, hexyl, octyl, decyl and like glycollates of branched-chain alcohols produced with methanol in the carbon monoxide-hydrogen synthesis and glycol, glycerol, and phenyl glycollates are specified as starting materials. In examples, the initial esters are methyl, ethyl, butyl and isobutyl glycollates and the catalysts are prepared as follows: (1) by fusing cupric oxide and silica; (2) by precipitation with ammonia of a solution containing copper and zinc nitrates and ammonium chromate; (4) precipitating carbonates from a solution of zinc ammonium chromate and copper nitrate; (5) precipitating with ammonia a solution of copper nitrate and ammonium dichromate; in each case the precipitate is reduced in hydrogen.  The space velocities are stated. Specification 385,625 is referred to.
Patent GB-182625-A (GB)
Title: Improved machine for digging or harvesting potatoes
IPC: A01D17/10
Filed: 1921-05-17
Abstract: 182,625. Morris, J., and White, G. May 17, 1921. Potato-harvesters.-A machine for digging potatoes comprises a digging-share 20, a rotary propeller 23 above the share 1, an endless chain of conveyer pans 5, and a riddle 26, the share being provided with an extension formed with a slight rise 21 and a depression 22. The machine is mounted on four wheels and its frame consists of a U-shaped channelbar 1 and brackets 2, 3, 11. The endless chain of pans 5 passes round octagonal rollers 4 driven from the rear side by chain-gearing and a counter-shaft 6. They pass over a perforated plate 28. Adjustably mounted between the front wheels is a shaft which is driven from the counter-shaft by bevel-gearing and carries curved blades 13 for throwing sticks, foliage &c. to one side. The propeller 23 is driven by chain-gearing and comprises flexible steel blades specially arranged and zig-zagged or corrugated. The blades break up lumps of soil and pass the potatoes &c. to the pans 5, whence they fall into a shaking riddle 26 leading to a hopper 27.
Patent GB-552649-A (GB)
Title: Improvements in or relating to the propulsion of aircraft
IPC: B64D39/00
Filed: 1941-10-13
Abstract: 552,649. Valves. THOMPSON, N. A. Oct. 13, 1941, Nos. 13142/41 and 8552/42. [Class 135] [Also in Group XXXIII] An aeroplane is provided with a series of jet tubes disposed in several rows along the length of each wing each row comprising a number of separated controlled sheet jets, the supply of gas under pressure to the jets being controlled from a central control device for propelling, steering and balancing the aircraft. As shown, a combustion chamber 21 is supplied from a mixing chamber 20 fed from a fuel vaporizer 16 and air pump 19, and the gases under pressure pass through a distributing valve chamber 25 to series of short jet tubes having slits discharging rearwardly over the upper surface of the wings. Other slits may be provided beneath the leading and trailing edges of the wings, and slits n, o, may be formed above and below the leading edge of the tail plane. Fig. 10 shows a cross-section of a jet tube which is formed as a D-shaped tube 55 having lips 57, 58 at one edge forming a narrow slit which is adjustable by set screws 59. The tube has an insulating covering 56 and is housed in a recess formed in the wing. The rows of slits may be successively cut out from either edge of the plane, and from either tip inwards by means of the control valve shown in Fig. 4 wherein a piston 27, slidable and rotatable in a cylinder 25 by means of a rod 34 provided with a hand-wheel 33, has a port 28 controlling the admission of the compressed gases to series of holes arranged in transverse and fore and aft rows in communication with corresponding jet tubes. Fore and aft movements in either direction cut out successive transverse rows of jets and rotary movements cut out successive fore and aft rows of jets. Spring-pressed balls 37 co-operate with grooves in a casing 36 to locate the longitudinal position of the piston, and a pointer 43 having a rounded projection 44 moving over recesses in a fixed disc 45 locates the angular position of the piston. The intensity of the jets as a whole is controlled by cocks 46 common to each fore and aft row of tubes leading from the holes in the cylinder 27, each cock 46 having a pinion 47 gearing with a transverse rack 48 and one of them having an extension rod 49 leading to a control handle 50. Slide valves may be used instead of the valves 46. The slits o, n, are controlled by pedals 61. The air pump 19 and a fuel pump 17 are driven by a turbine 22 supplied from the combustion chamber 21, and a starter electro-motor 23 acts as a generator when the turbine 22 is running. The heat of the issuing jets serves to reduce the tendency to ice formation on the wings. Jets of the form described in Specification 456,063, [Group XXXIII], may be used in which case it is possible to get a braking effect by increasing the pressure of the fluid supplied so that it no longer follows the curved lip of the nozzle and the reaction is reversed in consequence. Specifications 431,646 and 466,960, [both in Group XXXIII], also are referred to.
Patent GB-584513-A (GB)
Title: Transmission of signals by two-way radio communication with directional aerial
IPC: H04B1/50
Filed: 1944-07-10
Abstract: 584,513. Wireless signalling. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO HOLDING AKT.-GES. July 10, 1944, No. 13169. Convention date, July 26, 1943. [Class 40 (v)] In a combined transmitter and receiver for ultra-short waves, a transmitter 1 has a dipole aerial 3 which is arranged at an adjustable acute angle to the receiver dipole 2. For reception, a certain proportion of the carrier wave emitted from the transmitter is received by dipole 2 together with the desired signal and heterodyned at 4 to give an intermediate frequency which is selected by filter 5, amplified at 6 and detected at 7. Small deviations in the received frequency may be corrected for by making a corresponding variation in the transmitter frequency. Alternatively, the resulting intermediate frequency may be heterodyned a second time with the output from a variable frequency oscillator to give a final true intermediate frequency, Fig. 2 (not shown). In a further modification, the transmitter is modulated by an adjustable auxiliary frequency and one of the resulting side bands is used to heterodyne the received signal. In this case, the auxiliary frequency is brought into operation by an automatic switching device at the end of the transmission of a message.
Patent GB-736554-A (GB)
Title: Improvements in or relating to container-dispenser for cosmetics in solid stick form
IPC: A45D40/04
Filed: 1953-05-12
Abstract: 736,554. Cosmetic &c. holders. CALUMET MANUFACTURING CO., Inc. May 12, 1953 [July 9, 1952], No. 13258/53. Class 18. A cosmetic holder comprises an element B held non-rotatably in a holder A and advanced by a screw C to eject the contents. The screw is secured to an external knob D. The contents are poured molten into the holder so that the element B is completely embedded. The parts A, B, C and cap G, are made of synthetic resin.
Patent GB-195884-A (GB)
Title: Improvements in or relating to furnaces for use in case-hardening and similar heat treatment of articles
IPC: C23C8/06
Filed: 1922-05-11
Abstract: 195,884. Wicksteed, R. May 11, 1922. Metal-heating furnaces.-A furnace for use in the case-hardening and like heat-treatment of articles comprises a chamber having in opposite walls an inlet 4 and outlet 3 for the heating-gases, layers of asbestos " fuel " 12, 14, or other fragmentary heat-radiating material adapted to produce turbulence in the current of heating-gases, being disposed across the inlet and outlet. The asbestos " fuel " is supported on grids 11. and the space between the lower layer of " fuel " and the upper grid forms a heating-chamber accessible through the doors 7. The walls of the chamber may be lined with " fuel ", or may have projections 15 formed thereon to assist in the radiation of heat. The furnace is preferably built of blocks or slabs loosely supported in an angle iron frame, and is heated by a burner in line with the inlet and outlet openings.
Patent GB-895537-A (GB)
Title: Improvements in or relating to closure caps for containers
IPC: B65D53/04
Filed: 1960-04-14
Abstract: 895,537. Stoppers. OWENS-ILLINOIS GLASS CO. April 14, 1960 [April 15, 1959], No. 13359/60. Class 125(3). A container closure 11 is provided with a gasket 20 formed of separate layers of resilient vinyl plastised of differing hard ness, the outer layer 22 being substantially softer than the base layer. The inner surface of the closure is provided with a protective coating 18 of enamel or a vinyl phenolic copolymer. The closure may be screw-threaded or have its top portion 14 recessed to form a channel in which the gasket is located.
Patent GB-1419697-A (GB)
IPC: F16T1/38
Filed: 1973-03-20
Abstract: 1419697 Condensate return apparatus K FUJIWARA 20 March 1973 [24 March 1972] 13378/73 Heading F4A [Also in Divisions F1 and G3] In an installation as shown in Fig. 3 in which steam traps 80 return water to a boiler 86 via a collecting tank 81, a return apparatus 82 (fed by an air compressor 89 and shown in Fig. 1) receives and discharges liquid via non-return valves and periodically expels liquid by compressed air when a servo valve 52 controlling the air input is triggered by a ball float 36. The servo-valve is operated by compressed air delivered by a float operated pilot valve 69 and when air is allowed past valve 69 from inlet 62 it enters a bellows unit 44 to move the servovalve to divert air from outlet duct 59 to duct 41 which connects with the liquid space. When the water level falls the ball remains engaged with an actuating cover 68 until the level is below pipe 38.
Patent GB-545522-A (GB)
Title: Improvements in and relating to cast or moulded machine and like parts having wear-resisting qualities
Inventor: KNOWLSON, REGINALD FREDERICK
Filed: 1940-08-23
Abstract: 545,522. Cylinder liners. KNOWLSON, R. F. Aug. 23, 1940, No. 13390. [Class 7 (ii)] [Also in Groups XXII and V] Cylinder liners have wear-resisting surfaces formed by incorporating in the cast or moulded metallic or non-metallic article particles of hard metal defined as sintered or fused alloys containing carbides, silicides, nitrides &c. of tungsten, titanium, tantalum or the like bonded with under 25 per cent. by weight of iron, nickel, cobalt, or like low melting point metal. The liners may be produced by casting in centrifugal moulds in which comminuted hard metal is supported by wire gauze or otherwise. A smooth working surface may be made on the cast article by diamond tools and this is stated to be proof against corrosion.
Patent GB-750744-A (GB)
Title: Tandem trench roller
Inventor: PLAS RALPH JOHN
IPC: E02F3/84
Filed: 1954-05-07
Abstract: 750,744. Trench rollers. BLAW-KNOX CO. May 7, 1954, No. 13452/54. Class 6 (1). A trench roller comprises a frame 10 having on one side a pair of longitudinally spaced compaction rollers 26 and on the other side of the frame a pair of longitudinally spaced wheels 32, the rollers being pivoted to the frame (e.g. through king pins 23) so as to be steerable relatively thereto, each wheel 32 being pivotally carried on a yoke or bracket 36 connected to the frame 10 through transverse arms 37, 38 and longitudinal arms 43, 44 each arm being pivoted at one of its ends to the frame 10 and at its other end to one or other of the yokes 36, whereby the wheels are also steerable with respect to the frame, means being provided whereby the yokes are adjustable vertically with respect to the frame which is resiliently supported by the wheels 32 to accommodate uneven road surfaces. In the form shown, steering and vertical adjustment of the wheels 32 is by hydraulic means. A piston-and-cylinder assembly 51 is provided for each wheel and the two cylinders are interconnected to enable one wheel to move vertically with respect to the other when passing over an uneven road surface or when entering a trench. Each roller is coupled to and is steered simultaneously with one of the wheels by means of tie bars 60, the steering motion being imparted by a piston and cylinder assembly 59. The machine is driven by an internal combustion engine 13 through a transmission assembly 14, chain drives 15, 16 and cross shafts 19 provided with pinions 31 which mesh with ring gears on the rollers. A scraping device is provided for each roller.