baber/WOPTO huggingface dataset:
Patent GB-204019-A (GB)
Title: Improvements in and relating to automatic electric substation control equipments
Filed: 1923-07-19
Abstract: 204,019. British Thomson - Houston Co., Ltd., (Assignees of Whiting, M. A.). Sept. 15, 1922, [Contention date]. Motor-generators; motors, controlling.-In systems for starting motor-generator sets in automatic substations, a synchronous motor 2, driving a continuous-current generator 3, is speeded up from rest, starting as an induction motor, by successively connecting it to alternating-current mains through a reduced-voltage switch 4 and a full-voltage switch 6, a separately excited field taking current from the generator 3 through an automatic switch 9 when a certain speed has been attained. The generator field 11 is built up under the control of a resistance relay 16. The operations are started by the closure of a switch 20, which energizes a magnet 33 to close the reduced voltage switch 4. When a certain excitation of the motor field is reached, a relay 36 causes the reduced-voltage switch to open and the full-voltage switch 6 to close. When the rising voltage of the generator 3 sufficiently exceeds the voltage of the load circuit 13, connection between them is made by an electromagnetic switch 14 under the control of a differential relay 45 and a polarized relay 48. In case the field of the motor 2 fails to build up, thermal devices actuated by the continued flow of current through the voltage reducing transformer 5 open switches 28<a>, 28<b>, which disconnect the set completely. The set can be disconnected under manual control by opening the switch 20. Arrangement of known kind may be added to the system for protecting it against short-currents and overloads. In place of manual control completely automatic control may be installed.
Patent GB-250446-A (GB)
Title: Improvements in means for securing hangers and like devices to reinforced concrete structures
IPC: E04B1/41
Filed: 1925-07-24
Abstract: 250,446. Armstrong, J. J. V., (Bauindustrie Akt.-Ges). July 24, 1925. No Patent granted (Sealing fee not paid). Supporting pipes and tubes.-A bolt conduit or channel c for use in securing pipe and cable hangers and like devices to reinforced concrete structures and beams is made with a swallowtail cross-section having parallel sides a at the mouth, and transverse anchor plates r are secured thereon by wedges u. The plates r bear on the main bars e and are further supported by bars k which pass through loops on the stirrups d and engage holes or notches in the plates. The bolts have a square neck b and flared head.
Patent GB-531318-A (GB)
Title: Improvements in and relating to electric communication systems
IPC: H04M1/68
Filed: 1939-06-28
Abstract: 531,318. Secret transmission. TELEPHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. June 28, 1939, No. 18837. [Class 40 (iv)] A subscriber's line L over which normal communication can take place from an instrument NP is associated, when the handset of a second instrument SP is lifted, with secrecy apparatus SE which may be of the kind described in Specification 511,420. To enable a change to be made from normal to secret transmission without releasing the exchange apparatus, cradle springs 2 of the normal instrument are arranged to complete a momentary circuit when the handset is replaced for a relay 8 which bridges the line at 16 and locks up over a thermal switch which unlocks it after a suitable interval. Meanwhile the other handset will have been removed and the line will be bridged in the set SE.
Patent GB-793556-A (GB)
Title: Improvements in or relating to processes for the production of sintered bodies
IPC: H01L21/18
Filed: 1955-06-29
Abstract: A pure fused body of silicon is produced by electrically heating silicon in powdered form in an electrically non-conductive heat-resistant container in vacuo or in a protective gas atmosphere so as to form a sintered body, removing the sintered body from the container, and subjecting to a zone melting process. The protective gas may be argon or a decomposable gaseous silicon compound, e.g. SiHCl3 or SiCl4, which may be in admixture with hydrogen.  Heating may be by an induction coil or by passage through the powder of a direct or alternating current. As shown, the vessel comprises a vertical quartz tube formed in two parts 2, 3 which are held together by a few fused points and which can be readily separated.  Tube 2, 3 is enclosed by a further quartz tube which may be evacuated or filled with protective gas via pipe 8.  An induction heating coil 9 surrounds tube 5 and may be moved upwards or downwards at 1-10 mm/min. Heating is initiated in a short fused rod 17 of silicon.  If the rod is sufficiently impure, it may be directly heated by the induction heating coil.  If the rod is pure, however, it must be indirectly heated, e.g. by means of a radiation heating element 18 of Mo or W which is itself heated by the induction heating coil. In a modification (Fig. 2, not shown) powder is confined in a horizontal tube under pressure by means of two graphite plates which act as electrodes for the passage of an electric current. The current may be maintained constant by means of a resistance. Radiation heating may initially be employed.  A protective gas is passed through the powder in the tube.
Patent GB-705905-A (GB)
Title: Improvements in preparation of metals and alloys at very high temperatures and products obtained thereby
IPC: C21C5/52
Filed: 1950-07-28
Abstract: 705,905. Making and refining alloys; refining iron and other metals. SOC. ANON. DE COMMENTRY FOURCHAMBAULT & DECAZEVILLE. July 28, 1950 [Aug. 16, 1949], No. 18915/50. Classes 72 and 82 (1) [Also in Group XII] In the treatment of metals and alloys, the metal bath, with or without other constituents added thereto during the treatment, and the floating slag are subjected, inside a rockable electric furnace with a refractory lining, to a temperature of 1800-2200‹C. to produce exo-thermic reactions which are carried to completion by blowing a gas into the molten metal. The furnace may be of the resistance or single- or 3-phase arc type, whilst the gas -may be ordinary or super-oxygentated air, or industrial or pure oxygen. It may be used for the production of a protective atmosphere, gasification, degasification, decarbonization, or for controlling the composition of slags, metals, steels or alloys, particularly those containing less than .02 per cent. of carbon. In the form shown, a rotary cylindrical single-phase electric arc furnace 1 has cradles 2 whereby it may be rocked on rollers 3, and a refractory lining 21 providing an ellipsoidal charging chamber 20, the ratio between the minor and major axes of which is approximately..8. The lining 211 may have a base of spinel, zircon, mullite or of magnesia as described in Specifications 608,544 and 608,790, [both in Group V]. Electrodes 5 arranged along the minor axis of the ellipsoid, and along the axis of rotation of the furnace, are clamped to carriages 7 running on rails 8 for rapid entry into and withdrawal from ports in the furnace. With the electrodes withdrawn, gas for blowing is introduced by means of pipes 16, wind boxes 16a, and nozzles near the casting hole 16b, and the gas and pulverulent solids to be withdrawn are exhausted through the furnace ports by means of sleeves 11 into electrostatic separators or cyclones 12 on carriages 13 rolling on rails at right angles to rails 8, said exhaust means including valves to control the degree of pressure within the furnace.
Patent GB-1362462-A (GB)
Title: Speed controlling arrangements
IPC: H02P23/16
Filed: 1972-04-24
Abstract: 1362462 Automatic control of speed DAIMLER-BENZ A G 24 April 1972 [26 April 1971] 18929/72 Heading G3R [Also in Divisions F1 and H3-5] The speed of a machine element, e.g. a diesel engine, is controlled by a system in which a pulse signal whose frequency is proportional to speed is shaped so that the pulses have uniform magnitude and duration and is then compared with a D. C, reference voltage to produce a D. C. error voltage in response to which a control stage adjusts the speed, e.g. by controlling the fuel injector. The speed is detected by a variable reluctance pick-up which has a D.C. energizing coil 11. The signals from this are fed through a capacitor to an operational amplifier whose output triggers a transistor monostable circuit supplied with a Zener stabilzed voltage. These elements are in box 13 which is fully described Fig.2, (not shown). The resulting uniform pulses are fed to box 14 as signal E1, Fig.3, where it is differentiated by 26, 27, integrated by 29, 30, subjected to low pass filtration by 21, 22 and fed to the inverting input of operational amplifier 18. An adjustable reference voltage from 20, derived from the Zener stabilized source is applied to the non- inverting input of 18 and the difference (i.e. error) forms the output E2. Because of the lowpass filter 21, 22, also feedback RC 24, 25 the operational amplifier 18 is able to directly compare the average value of pulse signal E1 with reference voltage from 20. E2 is supplied to control stage 15, where the voltage controls a relaxation oscillator comprising an operational amplifier and capacitor Fig. 4, (not shown) which produces pulses whose mark/space ratio is proportional to speed error, and these energize the fuel injector mechanism 12 against a shut-off spring. The electronic circuits may be in printed circuit form mounted in an enclosure for the injector pump. Fig.3, (not shown). A plurality of engines, each with its own control system, may be operated by the signals from one.
Patent GB-307040-A (GB)
Title: Circuit arrangement for telephone installations
IPC: H04Q3/00
Filed: 1928-06-30
Abstract: 307,040. Siemens & Malske Akt.-Ges. March 3, 1928, [Convention date]. Semi - automatic exchange systems; timecontrolling systems.-Thermal relays are employed to release a connection if neither subscriber gives a clearing signal within a gven time. The invention is described with reference to a system substantially identical with that described in Specification 302,140, comprising a number of small automatic exchanges associated with a central exchange at which the establishment of all connections within the system is controlled by a semi-automatic operator, the apparatus in each automatic exchange comprising finder-connector links AS1-LW1 and hunting switches AW1 which associate with links with the central exchange. When a called subscriber replies, the withdrawal of the plug at the central exchange causes the release of relay K which connects up a thermal relay Th1. This, on operating, connects up a further thermal relay Th2 so that after a prescribed interval relay V2 operates and releases the connection in the manner described in the above-mentioned Specification.
Patent GB-626803-A (GB)
Title: A metal trap for the exclusion of rain and wind
IPC: E06B7/232
Filed: 1947-07-17
Abstract: 626,803. Draught excluders. ROBERTS, K. G. July 17, 1947, No. 19094. Drawings to Specification. [Class 20(iii)] A metal strip for application to windows for the exclusion of wind and rain has a section partly tubular in shape terminating in a vertical flange. This can be attached to the rebate of a casement window or such like by means of a second vertical flange in alignment with the first.
Patent GB-271290-A (GB)
Title: Improvements in gas lighting devices
IPC: H01H3/02
Filed: 1926-07-31
Abstract: 271,290. Woods, S. J. July 31, 1926. Lighting burners by electric devices.-A rod 10 is adapted to be moved in one direction against the action of a spring 29 on opening the gas-cock 20 and be released at a predetermined point so that it is moved rapidly by the spring in the opposite direction for operating a magneto 7 in circuit with a sparking electrode 3 adjacent the burner-head 1.. The magneto shaft is connected by a ratchet clutch mechanism with the rod 10 so that it is rotated only by the return movement of the rod. The gas-cock 20 carries an arm 21, extending into a casing 14 containing a member 23 slidable on the rod 10, and normally engaging the rear end of a latch 25. The member 23 engages a pin 24 on the rod 10 and is moved forward by the arm 21 until the latter is disengaged from the latch to allow of the return movement. During the forward movement of the member 23, a cam 28 thereon depresses a lever 16 to connect wires 5, 12, connected respectively to the electrode 3 and to the magneto 7, and complete the igniting circuit. The latch 25 is pivoted and is depressed by the arm 21 against the action of a spring to engage a slot 27 in the casing 14 when the gas-cock is moved sufficient to cut-off the gas supply, the latch being locked in this position by a projection 22 on the arm 21 engaging a groove 26 on its upper surface. To re-open the gas-cock, it must first be fully closed so that the arm 21 is moved behind the latch to allow the latter to rise into its normal position. A plurality of burners may be ignited, as shown in Fig. 1, by a single rod 10 and magneto 7. The rod 10 has a disc 30 engaging a pivoted lever 31 connected to a spring-pressed piston 33 movable in a pivoted cylinder 34 immersed in oil which flows into the cylinder as the piston moves out and delays the return of the rod 10 to normal position so as to allow the link 16 to keep the circuit closed while the magneto is in operation.
Patent GB-426241-A (GB)
Title: An improved walling or lining for mines
IPC: E21D11/06
Filed: 1934-06-29
Abstract: 426,241. Linings for mines. PARUSEL, J., 46, Oberwallstrasse, Gleiwitz, Germany. June 29, 1934, No. 19236. Convention date, July 28, 1933. [Class 85] A yielding lining or walling for mines consists wholly or partly of tar beton. The lining may be formed as a unitary whole by tamping behind a shell or it may be formed of bricks formed by pressing the beton in a hot or cold state, weak bricks being inserted between lengths of strong bricks. The beton may be reinforced with iron.
Patent GB-674914-A (GB)
Title: Improvements in apparatus for spreading lime and the like over areas of land
IPC: A01C17/00
Filed: 1950-08-02
Abstract: 674,914. Fertilizer distributers. MUSGROVE, F. E. Aug. 2, 1950 [May 31, 1950], No. 19276/50. Class 6(i) A lime or like spreading machine comprises a vehicle 1 fitted with a flexible mat 3 adapted to be wound on a roller 6 to move the material towards a scraper conveyer 8 which feeds the material in a finely divided state to chutes 11 where it falls on to rotary ribbed distributing discs 10. As shown the conveyer 8 and discs 10 are driven by a separate motor 9. The flexible mat is wound on to roller 6 with a continuous motion by means of double-acting pawls 25, 26 driven from the road-wheel 2 through a crank pin 17a, and acting on a ratchet wheel 27 connected to roller 6 by chain and sprocket gearing 29. A cross end 7 is mounted on the mat and ensures movement of the material towards the conveyer. The pawls 25, 26 are disengaged from the ratchet 27 by projections 31 on a shaft 30 engaging extensions 25a, 26a on the pawls 25, 26 respectively to allow the mat to be wound back to its original position by means of the winding mechanism 32.
Patent GB-1467414-A (GB)
Title: Laminates
IPC: C09J167/00
Filed: 1974-05-02
Abstract: 1467414 Laminates GENERAL ELECTRIC CO 2 May 1974 [13 June 1973] 19357/74 Heading B5N [Also in Division H5] A laminate comprises, as adhesive interlayer, a block polysiloxane-polycarbonate copolymer made by reacting (A) a halogen chain-stopped polydiorganosiloxane composed of from 5 to 200 chemically combined diorganosiloxy units consisting essentially of dialkylsiloxy units which are connected to each other by silicon-oxygensilicon linkages wherein each of the silicon atoms has two organo radicals attached thereto by a carbon-silicon bond, and (B) a hydric phenol where Z is one or more of hydrogen, a C 1-5  alkyl radical or a halogen radical, and each R is hydrogen, a monovalent hydrocarbon or a halogenated monovalent hydrocarbon radical, and phosgenating the purified reaction product. Preferred block copolymers have the average formula where n is an integer of from 1 to 1000, a is 1 to 200, b is 5 to 200, the ratio of a to b is from 0À05 to 3, d is at least 1, Y is A is hydrogen or R<SP>1</SP> si C 1-5  alkyl and R<SP>11</SP> is a monovalent hydrocarbon radical or a halogenated hydrocarbon radical. Exemplified laminates consist of: (a) glass, the block copolymer and a polycarbonate, (b) glass, the block copolymer, polycarbonate, the block copolymer and glass; (c) polycarbonate, the block copolymer, polycarbonate, the block copolymer and polycarbonate and (d) glass, the block copolymer, polycarbonate, the block copolymer and polycarbonate. In a preferred embodiment, electrically conducting wires for connection to an alarm or heating system are embedded on the block copolymer. The laminates may be made using an autoclave or a vacuum bag.
Patent GB-613728-A (GB)
Title: Improvements relating to wire drawing machines
IPC: B21C1/12
Filed: 1946-06-28
Abstract: 613,728. Drawing wire. NORTON & CO., Ltd., Sir J. F., and NORTON, W. J. June 28, 1946, No. 19360. Addition to 580,389. Drawings to Specification. [Class 83 (iv)] The constant torque magnetic couplings driving the wire drawing drums of the machine described in the parent Specification are provided with a hand-adjusted regulator for the field system of each coupling, two-way switches being provided so that the regulating resistance may be short-circuited to ensure satisfactory starting without altering the setting for normal running.
Patent GB-715127-A (GB)
Title: Improvements in or relating to brake mechanisms
Inventor: FLETCHER ARTHUR HOLMES
IPC: F16D55/40
Filed: 1951-08-16
Abstract: 715,127. Disc brakes. ROLLS-ROYCE, Ltd. Aug. 14, 1952 [Aug. 16, 1951], No. 19395/51. Class 103(1) In a disc brake the fixed plates 25, 26 and the moving plates 12, 15 are pressed together by the ram cylinder 18. The fixed cylindrical member 19 occupies the annular space between inner and outer plates and is splined to engage simultaneously both the outer and inner fixed plates.
Patent GB-297814-A (GB)
Title: Improvements in lubricating devices for spring plates
IPC: B60R17/00
Filed: 1928-07-04
Abstract: 297,814. Graissage Alcyl Soc. Anon. Sept. 30, 1927, [Convention date]. Channels in springs.- The centre bolt 1 of a vehicle spring is provided with a lubricating groove or flat 6 communicating through channels 4, 5 with a channel 7 in a nut 2, the channel 7 being connected by a hollow screw 3 and a coupling member to a capillary conduit 11 leading from a central lubricant reservoir, as set out in Specifications 259,567, 264,182 and 269,891, [all in Class 12 (iii), Lubricators &c.]. The channels 4, 5, 7 may be filled with capillary material.
Patent GB-1185919-A (GB)
Title: Microscope
Inventor: OSTERBERG HAROLD
IPC: G03H1/00
Filed: 1967-04-27
Abstract: 1,185,919. Holography; microscopes. AMERICAN OPTICAL CORP. April 27, 1967 [April 29, 1966], No. 19509/67. Headings G2C and G2J. A microscope wherein a hologram of a specimen 19 is made using the two beam method comprises a laser 10, a beam splitter 12 giving a reference beam 11 and an object beam 9, an objective 20 for focusing an image of the specimen, and a beam combiner 13 arranged to direct the beams 11, 9 to interfere at a film 22. Phase microscopy as well as dark-field and oblique dark-field illumination can be applied by placing a phase plate 39 at the conjugate 36 of the laser 10 for dark-field and oblique dark-field. In another embodiment, Fig.2 (not shown) prisms (40, 41) and a mirror (42) provide reference and object beams which impinge on opposite sides of the film. Other arrangements, more or less compact than that of Fig. 1, are described.
Patent GB-791426-A (GB)
Title: 10-(halo-benzoyl)-3,7-bis(dimethylamino)phenothiazines
Filed: 1956-06-25
Abstract: The invention comprises 10-(halobenzoyl)-3,7-bis-(dimethylamino) phenothiazines wherein the halogen is chlorine or bromine, and a method of preparing them by reacting the zinc chloride double salt of leucomethylene blue with halobenzoyl chloride in hot pyridene, pouring the reaction mixture into water to obtain a precipitate, treating the precipitate with hot alkaline solution, decanting, extracting the solid residue with hot benzene, treating the benzene solution with fuller's earth, and mixing with petroleum ether to obtain a crystalline precipitate.  Products specified are those wherein the benzoyl radical is substituted as follows: 2,3-dichloro-, 2-4-dichloro, 2,5-, 2,6-, 3,4- and 3,5-dichloro-, 2,3,4-, 2,4,5-, 2,3,5-, 2,3,6-, 2,4,6- and 3,4,5-trichloro-, 2,3,4,5-, 2,3,5,6- and 2,3,4,6-tetrachloro- and pentachloro, and the corresponding bromine derivatives.  A mixture of halogenated benzoyl chlorides obtained by halogenation of benzoyl chloride may also be used.
Patent GB-732965-A (GB)
Title: Improvements in methods of applying a hard metal to metal parts
Inventor: LANGFORD ROY GEORGE
IPC: B23K31/02
Filed: 1951-08-20
Abstract: 732,965. Welding by fusion. LANCASTER (LONDON), Ltd., G. K. Nov. 13, 1952 [Aug. 20, 1951], No. 19632/51. Class 83 (4). A method of applying a hard metal to metal parts comprises applying a stainless steel filler rod 50a to the part 51 which is connected to one side of a low voltage supply and applying a carbon electrode 11 to the rod, which electrode is connected to the other side of the supply. The part 51 may be a stitch cam for hosiery making machines and the filler rod may be of a columbium bearing stainless steel. In another embodiment for building up a worn area of a hosiery thread feeder 71, Fig. 3c, a carbon block 73 connected to a low voltage welding transformer is inserted in a bore of the feeder and a skin of hard metal 75 is applied by the apparatus shown in Fig. 1. The surplus metal is then ground off and the block 73 is then removed.