baber/WOPTO huggingface dataset:
Patent GB-197745-A (GB)
Title: Improvements in or relating to closed cycle ventilating and cooling air systems for electrical machinery
IPC: H02K9/24
Filed: 1922-02-22
Abstract: 197,745. Thompson, H. F. J. Feb. 22, 1922. Valve apparatus, actuating.-Relates to cooling systems for electrical machines of the kind wherein air is circulated in a normally closed cycle and means are provided for opening the cooling system to the atmosphere when an excessive temperature is reached, and consists of the provision of further means which prevent the opening when the excessive temperature is due to an electrical fault. The door a is normally held closed by a latch b which is connected to the core d of a solenoid e. When an excessive temperature is reached, the thermostat f closes the solenoid circuit and the latch is liberated to allow the door to open. In the event of the, high temperature being due to an electrical fault, the relay k is energized to break the solenoid circuit l, m. Simultaneously the contact l, r is made so that a trip coil on the switch casing q is energized. An auxiliary contact o on the main switch n serves to break the solenoid circuit when the switch is opened. The switch handle is connected to the latch.b by a wire or the like p so that the latch is held in engagement with the door when the main switch is open. Instead of using the relay k and switch n, one only of these devices may be employed.
Patent GB-104249-A (GB)
Title: Improvements relating to Brushes.
Inventor: DEMPSEY JOHN
IPC: A46B11/00
Filed: 1916-04-11
Abstract: 104,249. Dempsey, J. April 11, 1916. Reservoir brushes. - In a reservoir brush, the fluid is discharged by hand-operated means acting upon the resilient end of the reservoir. A brush suitable for oiling bread and baking-utensils is shown in Fig. 1, and comprises a main reservoir a from which oil is forced by the thumblever f<2> into secondary reservoirs b', b<2>, which are in direct connexion with the bristles e through tubes d<3>. The lever f may be connected to the domed end a<1> of the reservoir.
Patent GB-826589-A (GB)
Title: Improvements in and relating to filling control devices and contents guages for lubricant containing tanks and the like
IPC: G01F23/58
Filed: 1958-02-18
Abstract: 826,589. Indicating and controlling liquid levels. BLACKBURN & GENERAL AIRCRAFT Ltd., and SMITH, C. A. Feb. 18, 1958, No. 5301/58. Class 123(1) A filling control and level indicating device for a tank, especially the lubricant tank of a combustion turbine, which is pressure-filled from below comprises a casing 1 having flanges 23 by which it is secured in an aperture in the tank bottom and a filling bore 2 normally closed by a filler cap 21. The bore 2 houses a sight glass 3 which is viewed through a window 4. Mounted above the casing to form a continuation of the bore 2 is a tube 5 having at its end a gravity valve 6 with a vent bore 7 therein. The pipe 5 contains a float 8 having attached thereto an indicator 9 visible through the sight glass. A discharge bore 15 coextensive with a stand-pipe 16 having its open upper end at the "full" level in the tank is provided in the casing, the pipes 5, 16 being enclosed in a filter 17. The bore 15 has a valve 18 which is closed against the pressure of a spring 19 by a flange 22 on the filler cap 21 when the latter is in position. A third bore 10 extends from a lateral bore 11 from the bore 2 to the upper end of the casing and is normally closed by a spring-pressed valve 12. When the tank is to be filled the cap 21 is removed whereupon the valve 18 opens. A charging hose is connected and liquid pumped into the tank through the valve 6 until overflow occurs into the pipe 16, when liquid flows from a discharge pipe 24 leading from the bore 15. The hose is then removed and the cap 21 replaced, thus closing the valve 18. To determine the level of liquid in the tank at any time a plunger 14 is depressed opening the valve 12 to place the lower end of the bore 2 into communication with the tank so that the liquid in the pipe 5 drops to the level of that in the tank. The level is then read off from the indicator 9. Accidental breakage of the glass 3 will only result in the loss of the small amount of liquid held in the pipe 5.
Patent GB-590230-A (GB)
Title: Improvement in method of forming and trimming die castings
IPC: B22D17/20
Filed: 1945-03-02
Abstract: 590,230. Injection-moulding. COTTRELL, H. L. (Crown Fastener Corporation). March 2, 1945, No. 5318. [Class 87 (ii)] [Also in Group XXII] Die castings comprising a product part 14 and a gate part 20 formed by pressure injecting casting material into relatively movable die members 10 containing spaced core pins 13, 19, are trimmed by opening the die, importing lengthwise movement to the core pins to move the casting out of the die, then partially closing the die and returning the core pins so that either the product part or the gate part comes into contact with an impact surface 21 of the die, the two parts of the casting being thereby severed from each other. Continued return movement of the core pins strips both parts of the casting which are directed into separate compartments by a partitioning member. The method may be applied to either metals or thermoplastic materials.
Patent GB-475728-A (GB)
Title: Improvements in or relating to television or picture receiving systems
IPC: B60H1/00
Filed: 1936-02-24
Abstract: 475,728. Television receivers. FAUDELL, C. L., and ATKINSON, N. Feb. 24, 1936, Nos. 5539 and 32348. [Class 40 (iii)] The received rectified signal, containing the direct-current components, is applied to a cathode-ray tube or a thermionic valve whose bias is varied in accordance with the gain of the signal amplifier, in such a way that the variations of the signal potential corresponding to black consequent upon variation of gain are compensated. The amplification of the received signal is preferably performed wholly at intermediate frequency, V1, Fig. 1, being the last intermediate frequency amplifier coupled by means (not shown) to the second detector V2 which is directly coupled to the cathode-ray tube CT. The tube CT is biassed to cut-off from a tapping on a potentiometer VR3 in series with a further potentiometer VR2 whose tapping is taken to the biassing resistance R1 of valve V1. When the amplification of valve V1 is varied, by varying its screen-grid potential, the increased anode current flows through part of VR2 and so varies the bias of the tube CT to control the level at which it is inoperative. If video-frequency amplification is employed, a similar circuit may be utilized. As applied to an amplitude filter for isolating synchronizing signals, the separating valve has its cut-off bias controlled in a similar manner, Fig. 2 (not shown). Where the output from the diode is applied to a potentiometer for varying the signal applied to either a separating valve or a cathode-ray tube, the bias of the tube or valve may be controlled by a second potentiometer ganged with the first potentiometer, Fig. 3 (not . shown). Specifications 422,906 and 455,375 are referred to.
Patent GB-712781-A (GB)
Title: Improvements in or relating to insulated electric cables and impregnating compounds therefor
Inventor: KING ALBERT
IPC: H01B3/20
Filed: 1952-03-03
Abstract: 712,781. Cables. BRITISH INSULATED CALLENDER'S CABLES, Ltd. March 2, 1953, [March 3, 1952.] No. 5560/52. Class 36. [Also in Group VIII] The fibrous insulation of a cable is impregnated with a normally plastic solid comprising microcrystalline petroleum wax having a melting point of not less than 80 ‹C and a mineral oil having a viscosity of less than 100 centistokes at o‹C and a volatility such that it shows a loss of less than i per cent when heated in air for five hours at 110‹C. The composition should contain not less than about 30 per cent by weight of the oil and not less than about  35  per cent by weight of wax having a melting point of 88 ‹C and needle penetration values of about 5 at 25 ‹C and about 35 at 70 ‹C, or not less than 40 per cent by weight of wax having a melting point of not less than 80 ‹C and needle penetration values of between 5 and 6 at 25‹C and between 35 and 75 at 70 ‹C, or not less than 45 per cent by weight of wax having a melting point not less than 80 ‹C and needle penetration values of about 6 at 25 ‹C and between 75 and 100 at 70 ‹C. The composition may contain one or more plasticizers such as polyisobutene, rosin, polyethylene or butyl rubber. Specifications 581,830 and 698,055 are referred to.
Patent GB-902818-A (GB)
Title: Method and apparatus for producing fibrous mats
Inventor: SITTEL KARL
IPC: D04H11/00
Filed: 1960-02-17
Abstract: 902,818. Agglutinated fibrous materials. ROSENWALD, L. J., ROSENWALD, J., and SCOTT, I. M., [trading as WALSCO CO.]. Feb. 17, 1960, No. 5581/60. Class 140. [Also in Group IX] A fibrous mat of predetermined outline is formed by depositing electrostatically charged fibres on an earthed rotating drum from which they are selectively transferred by attraction of an opposite electrostatic charge on a pattern electrode and repulsion of similar charge in the area surrounding the pattern, the selected fibres being attracted to a moving transfer belt to form the mat thereon. The fibres, which may be vegetable, animal, mineral, e.g. glass, or synthetic, are bound by agglutinants such as curable resins which may be applied in powder or granular form. In the apparatus shown, glass fibre yarn 11 is chopped by a cutter 14 into fibres 15 which fall into an air stream formed by streams issuing successively from nozzles 17, 18, 19, and are distributed thereby against a shield 37 across a moving belt 35, the tension and alignment of which may be adjusted by means of a roller 42, Fig. 7 (not shown). As the fibres fall from the belt 35, residual charges are dissipated by a high voltage A.C. line 180; the fibres are then charged by contact with negatively charged electrode 45 comprising wires 47 and fall on an earthed drum 55. The fibres are then attracted by positive charge on pattern 132, continuously rotated on a negatively charged cylinder 130 which is adjustably mounted on a removable carriage 123, Figs. 4-6 (not shown), and are distributed as mats 182 in conformity with the shape of the pattern in continuous repetition along a moving belt 65, residual charges being dissipated by high voltage A.C. line 181. Excess fibres tending to remain on drum 55 are transferred by positively charged roller 84 to a belt 81, beneath which extends electrode 200, and transfer to underside of belt 35 to joint fibres being deposited at the shield 37. A regulator 68 enables the speed ratio of pattern drum 66 and belt 65 to be varied. Air flow, temperature and humidity within the apparatus is controlled by a humidifier 95 and a fan which delivers conditioned air through ducts, as at 96, and exhausts through ducts, as at 114 and 115. Specification 902,817 is referred to.
Patent GB-547086-A (GB)
Title: Improvements in stoppers for hot water bottles and like containers
IPC: A61F7/08
Filed: 1941-05-01
Abstract: 547,086. Stoppers for hot-water bottles &c. JONES, F. C. May 1, 1941, No. 5640. [Class 125 (iii)] In a stopper for hot-water bottles and like containers of the type described in Specification 332,770, [Class 125 (iii)], wherein the bottle is provided with a closure member or socket 3 formed to receive a conical plug or valve .1 having a stem constituting a handle or fingergrip 4, means also being provided to prevent the plug falling into the bottle and for drawing it up into the aperture in the socket 3 and locking it therein, in order to avoid the use of materials other than rubber Such as metal and porcelain the plug 1 and its finger-grip 4 are formed as a one-piece integral moulding of rubber. The closure member 3 is formed of soft or semi-hard rubber while the plug 1 and its handle or finger-grip 4 .is formed with an enlargement to prevent the plug falling through the aperture in the closure 3 and in one form the finger-grip 4 is flat and formed with projecting fingers or ears 6. The use of different types of rubber i.e. rubber having different fillers for the members 1, 3, e.g. rubber compounded with mica and graphite for the closure 3 and rubber with hard stony fillers for the plug 1, prevents binding of the plug in its socket under the influence of heat. The screw threaded attachment 2 may be replaced by a bayonet connection.
Patent GB-959694-A (GB)
Title: Synchronising pulse separator circuits
Inventor: MCGHEE HENRY ARTHUR
IPC: H04N5/08
Filed: 1961-02-16
Abstract: 959,694. Television; transistor clipper circuits. PYE Ltd. Feb. 5, 1962 [Feb. 16, 1961], No. 5782/61. Headings H3T and H4F. Relates to a circuit for separating synchronizing pulses from a composite television waveform utilizing a transistor TR1 to the base of which is fed the television waveform with the synchronizing pulses negative going, the transistor being biased via resistor R4 so as to be cut-off during picture signal periods and to conduct in response to synchronizing pulses. In accordance with the invention the time constant R6, C2 of the base circuit is arranged to be substantially equal to the time constant R3, C1 of the emitter circuit. This equalization of time constants is said to maintain the emitter-base D.C. potential difference constant during the frame pulse synchronizing period and ensures a constant amplitude pulse output during both line and frame synchronizing pulse periods
Patent GB-215142-A (GB)
Title: Improvements in the manufacture of propeller blades
IPC: B21J7/16
Filed: 1923-02-28
Abstract: 215,142. Dicks, T. A. Feb. 28, 1923. Screw propellers, particularly for aeroplanes, are formed from metal blanks by one operation of forging-dies or die-rolls. The die faces are shaped at 7 to form a circular collar on the blank 1 and at 6 to cause the metal to flow laterally, longitudinally, and spirally as indicated by the gross sections, Fig. 4. The recess is formed chiefly in the lower die or roll.
Patent GB-200792-A (GB)
Title: Improvements relating to cut-out arrangements for electric traction systems
IPC: B60M3/00
Filed: 1923-02-28
Abstract: 200,792. Fabrik Elektrischer Apparate Sprecher & Schuh Akt.-Ges. in Aarau. July 12, 1922, [Convention date]. Cut-out arrangements. - In a traction system wherein the supply conductor is divided up into a number of sections fed from a single source A, Fig. 2, a faulty section is isolated and its faulty condition indicated by rotary switchregulators, electromagnetic switches and a number of control relays. The switch-regulators, Fig. 1, one of which is provided for at each section point A, C, D comprise two contact drums s, t electrically driven at 'different speeds and in opposite directions by a constant speed motor a supplied from a battery, the operation of the drums being initiated by the electromagnetic switch M and governed by the relays R<1>, R<2> which are controlled by the voltage of the incoming conductors. All the motors, one for each feeding point, are synchronized by speed regulators. When the main circuit-breaker 16 opens on fault, the source remains connected to the system through a high resistance. The loss of voltage at the faulty section brings into operation the switch-regulator which in rotation opens and closes the section switches finally leaving the faulty section disconnected. A lamp indicates the faulty condition.
Patent GB-994825-A (GB)
Title: Cellulose product and composition therefor and process for making same
IPC: D21J3/00
Filed: 1962-02-15
Abstract: <PICT:0994825/C3/1> A plant pot is produced by mixing sawdust, a thermosetting resin and a hardening agent while maintaining a back pressure in the mixer and a moisture content in the sawdust of 3-16%, and then moulding the mixture.  The sawdust may have a particle size of 0.2-2.7 mm. The proportion of sawdust may be 60-90%, and that of resin may be 10-40%.  The sawdust may be formed from soft or hard wood. The resin may be an amine or phenolic resin. The hardening agent may be ammonium chloride or aluminium sulphate. The mixture may also contain 1-10% of wax (as a water-proofing agent), 0.1-0.5% of urea (to combine with any formaldehyde released), iron oxide (as a colouring agent), and dodecyl-tetradecyl or hexadecyl trimethyl ammonium bromide (as surface-active agent).  The mixture may be moulded for 1-6 mins. at 200-350 DEG  F. and 600-3500 p.s.i.
Patent GB-1084881-A (GB)
Title: A detachable insulating cover or handle for a jack plug or pin plug
IPC: H01R4/00
Filed: 1965-02-10
Abstract: 1,084,881. Two-part couplings. MULTICONTACT A.G. Feb. 10, 1965 [Feb. 19, 1964], No. 5901/65. Heading H2E. A jack or plug comprises a detachable insulating cover or handle including a translucent or transparent elastic plastics sleeve 4 for covering the soldered or hooked joint of a supply lead (2, Fig. 2), with a lug (3, Fig. 3) on a tubular resilient contact (1, Fig. 3). The contact (1) with lead (2) attached is threaded through a loop 8 on an open-ended fastening cap 6 integral with the sleeve 4 and threaded into the sleeve 4 as shown. The cap 6 is then swung about a flexible hinge 5 so that a locking wedge 9 is inserted into the sleeve 4 to engage between the lead (2) and contact (1) and the loop 8 is held in a recess 10 of the sleeve.
Patent GB-308060-A (GB)
Title: Improvements in display signs
IPC: G09F7/00
Filed: 1928-02-25
Abstract: 308,060. Inman, L. Feb. 25, 1928. Name and number plates.-Opaque or semiopaque letters B carried by a plain sheet of glass A are surrounded by transparent or translucent margins B<1> which may be coloured. The rest of the glass A is made opaque as by black paint.. The sheet A is blacked by a sheet D of uneven reflecting glass.
Patent GB-1371286-A (GB)
Title: Aquarium with background
IPC: A01K63/00
Filed: 1972-02-09
Abstract: 1371286 Aquarium background STERNCO INDUSTRIES INC 9 Feb 1972 [25 Aug 1971] 5932/72 Heading A1A [Also in Division B6] An aquarium tank is provided with a pictorial background comprising a rigid sheet of plastics material of relief configuration which has high portions engaging the rear panel of the aquarium and depressed portions defining with the rear panel a ventilated space open to the atmosphere at the periphery of the sheet. The background is secured to the rear panel of the aquarium by clips 11. Electric light bulbs are slidably mounted in the background so as to project into the space.
Patent GB-369359-A (GB)
Title: Improved method of and apparatus for the evaporation of liquids, the drying of materials, or the crystallization of salts from their solutions
IPC: B01D9/00
Filed: 1931-02-26
Abstract: <PICT:0369359/III/1> <PICT:0369359/III/2> A process for evaporating liquids, drying materials, and crystallizing salts consists in passing the material in longitudinal direction through heat-exchanging troughs 1 provided with jackets 2 for heating or cooling medium; fixed drums 12 form supplementary heat exchangers; rotating spiders 20 carry bars 21 on which are mounted blades 30, 31 adapted to scrape the surface of the troughs and drums respectively; curved blades 32 convey the material from one end to the other where it drops through an opening 10 into the next trough.  The material is fed in through a hopper 8, and leaves by an exit 9; the vapours pass out by a pipe 46.  By varying the size of the drums 12 the thickness of the layer treated may be changed.
Patent GB-1036166-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: HEAD BRIAN ERNEST
IPC: H01L23/488
Filed: 1964-02-13
Abstract: 1,036,166. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Feb. 13, 1964, No. 6100/64. Heading H1K. The ends of lead wires extending through a header on which a semiconductor wafer is to be mounted are treated with the aid of an apertured jig 2 to form an array of coplanar flats, the positions of which correspond to electrode areas on the wafer. The wires may be bent to suitable positions and their ends ground, sheared or electrolytically machined flat in a single jig 3, Fig. 2, or the operations carried out in separate jigs. Afterwards the header is etched and the metal surfaces plated with gold or nickel. The flats may then be coated with solder and the semi-conductor wafer attached to them. Diodes, transistors, silicon controlled rectifiers and solid circuits may be mounted thus on headers with appropriate numbers of lead wires. Glass, ceramic or plastics may be used as the insulating part of the header.
Patent GB-780704-A (GB)
Title: An improved apparatus for feeding lids or caps for example to a lidding or like machine
IPC: B65B43/44
Filed: 1954-03-03
Abstract: 780,704. Applying lids to containers. LITCHFIELD, A. F. Feb. 28, 1955 [March 3, 1954; May 27, 1954], Nos. 6169/54 and 15630/54. Class 125(2). [Also in Group XXX] Apparatus for feeding lids to a lidding machine comprises a lid magazine 71 provided with tangential slots in which reciprocate respective bars 44 each bar having a wedge-shaped separator 46, the reciprocating movement first introducing the separators between the lids to release the lowermost lid and then, when reversed, withdrawing the separators from beneath the lids. As illustrated, the lowermost lid normally rests on the stops 47 of the bars 44 till roller 51 is engaged by a rotating member of the lidding machine advancing from the right to swing roller 51 over to the position shown to cause separators 46 to slip between the lids and to release the lowermost lid to fall on to floor 64. The said rotating member then engages lever 69 to cause discharging lever 68 to discharge the released lid on to shoot 35 where it is ready for lidding. Additionally the lidding machine includes a lever which is actuated by the movement of the can so as to release catch 53 thus to free the bars 44 to release a lid when operated, but if no can is present then the bars 44 are held by the said catch and no lid is released till the next can enters the lidding machine. Specifications 684,272 and 780,705 [Group XXX] are referred to.