baber/WOPTO huggingface dataset:
Patent GB-641244-A (GB)
Title: Improvements in or relating to devices responsive to changes in phase relationship of alternating current circuits
IPC: H02H3/30
Filed: 1947-06-11
Abstract: 641,244. Protective cut-out arrangements. GUNNING, P. F. June 11, 1947, No. 15357 [Class 38 (v)] In a protective arrangement, bridge circuits and lock-out relays are provided at each end of a protected zone, the circuits being interconnected by pilot wires and arranged so that in the event of a fault outside the protected zone, both relays operate to open trip circuits to prevent the tripping of the circuit-breakers by their associated fault detecting circuits. Fig. 1 (Comp.) shows a simplified arrangement in which each station A, B has a current transformer CT connected to points P, R and a lock-out relay LK connected to points Q, S of the bridge circuit, which has three arms formed by two rectifiers and a resistance, the fourth arm being formed by the pilot circuit and the resistance and relay of the remote bridge circuit. The bridge circuits are normally balanced and the connections are so arranged that when the fault currents in the transformers have the same phase relationship, as on a "through fault," current is applied to the pilot wires during alternate half-cycles by one bridge circuit and during the other alternate half-cycles by the other bridge circuit. Thus each station transmits alternately to the relay at the other station and the relays are operated. When the phase relationships differ, as on a fault in the protected zone, the bridge circuits oppose each other and the relays are not operated. Fig. 1. (Prov.) shows the application of the arrangement to a system in which the pilot wires are also telephone lines. On the occurrence of a " through fault," relays W, X at each station operate to complete the pilot circuit and disconnect the telephone circuits. Relays LK are energized and open their contacts to prevent the energization of trip coils TC of the circuit breakers (not shown) by their associated fault detecting devices. In the event of a fault in the protected zone, relays W, X close the pilot circuit, but the relays LK remain closed and the circuit-breakers are tripped. To guard against failure of the system should an unwanted D.C. voltage appear on the pilot circuit (from external sources), relays BC close their contacts to short-circuit the coils of relays X to prevent the completion of the pilot circuit and the possible incorrect opening of the relays LK on the occurrence of a fault. The relays BC also short-circuit the coils of relays X when the pilot lines are used for telephone communications between the stations, but in this case, on the occurrence of a fault, relays W operate and open the circuits for the relays B C, which restore, allowing relays X to operate to complete the pilot circuit for the protective arrangement to the exclusion of the telephone circuits.
Patent GB-1303312-A (GB)
IPC: C08L67/04
Filed: 1970-04-01
Abstract: 1303312 Cyclic ester-cyclic oxide copolymers UNION CARBIDE CORP 1 April 1970 [1 April 1969] 15416/70 Heading C3R The invention comprises linear copolymers having a reduced viscosity of from 0À2 to 15; having the following two recurring structural units. where each R is hydrogen, alkyl, halo or alkoxy; A is the oxy group; x is an integer from 1 to 4; v is an integer from 1 to 4; z is zero or one; with the proviso that x+y+z is from 4 to 7 and no more than three R groups are other than hydrogen; and where each R<SP>1</SP> is hydrogen, alkyl, cycloalkyl, aryl, chloroalkyl, alkenyl, or allyloxymethyl, or the two R<SP>1</SP> groups together with both carbon atoms of unit II form a saturated or monoethylenically unsaturated cycloaliphatic hydrocarbon ring having 4 to 8 carbon atoms; and containing from 0À01 to 10% wt. of a polymeric interfacial agent which has a reduced viscosity of 0À05 to 10, and also having a solvatable constituent which is solvatable in inert, liquid, saturated, acyclic hydrocarbons, which is incompatible with the linear copolymer and which has an average molecular weight of up to one million, and an anchoring constituent which is non-solvatable with the above acyclic hydrocarbon solvents, which is compatible with the linear copolymers, and which has an average molecular weight of at least 1000 and is 0À05 to 10 times the total molecular weight of the solvatable constituent. They may be prepared by contacting a cyclic ester of the formula a cyclic oxide of the formula from 0À01 to 10% wt. of the interfacial agent, and a polymerization catalyst, in the presence of an inert, non-polar, organic vehicle in which the cyclic ester and cyclic oxide are soluble and in which the resulting copolymer is insoluble.
Patent GB-560269-A (GB)
Title: Gun turrets for aircraft
IPC: B64D7/02
Filed: 1942-11-03
Abstract: 560,269. Aeroplane gun turrets. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G:, and LLOYD, J. Nov. 3, 1942, No. 15457. [Class 4] [Also in Group XXI] An aircraft gun turret 20 is rotatably mounted on a platform 19 which extends behind the turret to form the floor. of a chamber 13, which may be a pressure cabin, the latter being formed with a portion 24 which is outside and extends over the turret, and intowhich a gunner standing on the floor 19, can lean in order to sight. The turret may be shaped to' form a continuation of the curved sides 26 of the fuselage when the guns 21, 22, are in the position shown in full lines in Fig. 2, and may be so mounted that, when the guns are traversed, the air pressure on the projecting parts on one side of the fuselage in part balances the pressure on corresponding parts on the other side. The guns are fed with ammunition by trunks 23 which enterthe turret substantially in line with its vertical axis. Specification 545,459 is referred to.
Patent GB-388774-A (GB)
Title: Improvements in and relating to colour-photography
IPC: G03C7/20
Filed: 1931-05-27
Abstract: 388,774. Colour photography. DU PONT FILM MANUFACTURING CORPORATION, (formerly DU PONT PATHE FILM MANUFACTURING CORPORATION), 35, West 45th Street, New York, U.S.A.) May 27, 1931, No. 15497. Convention date, June 20, 1930. [Class 98 (ii).] In a plate or film bi-pack having two adjacent sensitive layers, an integral non-dyed transparent water-permeable colloid layer or coating is provided on one or both of these adjacent layers in order to improve the image definition on the rear sensitive layer. Such coating 4<1> may for example be on the rear emulsion 5<1>, and the front emulsion 2<1> may be dyed with a filter dye. Alternatively this front emulsion may have a filter layer thereon, e.g. one in accordance with Specification 369,799.
Patent GB-502159-A (GB)
Title: Method and device for automatically and consecutively connecting up two distinct apparatus with one and the same electric line, by means of currents of different voltages
IPC: H05B37/02
Filed: 1937-06-04
Abstract: 502,159. Switching systems. BRIAUX, M., and POMPON, (nÚe DELAUMENIE), G. June 4, 1937, No. 15697. Void. Convention date, June 5,1936. [Class 38 (iv)] In a system in which the mains may be energized with either high or low voltage for supply to high or low voltage apparatus, the low voltage apparatus is connected to the line only when low voltage exists on it. Supply means 1, 2 may carry low or high voltage and supply a high voltage lamp 3 directly. When high voltage is supplied, lamp 3 is energized and a relay coil 5 in parallel across the mains opens contacts 8, 7 in the circuit of a relay coil 9 controlling contacts 13, 12 in the circuit of a low voltage lamp 14 across the mains. Lamp 14 is thereby de-energized. Relay 5 is quickacting and relay 9 retarded so that when'low voltage is supplied, relay 5 is de-energized and, after a time interval, relay 9 closes its contacts to connect the low voltage lamp 14 to the mains. The lamp 3 may remain connected to the mains. The relay 9, 10 may be of the bi-metallic, or hot wire thermal type.
Patent GB-333189-A (GB)
Title: Improvements in brakes for railway and other vehicles
IPC: B61H9/00
Filed: 1929-03-04
Abstract: 333,189. Watkins, G. L., and Lewis, W. H. March 4, 1929. Divided on 333,156. Force-transmitting mechanism.-In equalizing mechanism for the brakes of railway and road vehicles the brake actuating shaft a is journaled at each end in a depending arm d pivoted to brackets e on the chassis and a crank arm i on the shaft a is connected by a rod h to one brake shoe f while the other brake shoe is connected direct to the shaft a by a rod j, the shoes being carried by arms g pivoted to the chassis. On the shaft a being rotated by either hand-lever b through the usual connections (not shown), the rod h will be moved by the crank i until the lefthand brakes are applied, whereupon the depending arm d will be oscillated to apply the righthand brakes with equalized pressure. The invention is applicable to power operated brakes. Specification 333,156 is referred to.
Patent GB-1039271-A (GB)
Title: Conveyors
Inventor: DEGOOD MAYNARD J
IPC: B65G47/26
Filed: 1963-04-22
Abstract: 1,039,271. Endless conveyers; roller conveyers. RAPIDS-STANDARD CO. Inc. April 22, 1963, No. 15773/63. Heading B8A.  Figs. 1, 3 and 6 show an accumulating conveyer 1 comprising rollers 4 carrying articles (not shown) normally driven by an endless belt 5 held in contact with the rollers 4 by rollers 6. The rollers 6 are supported by spindles 7a, 7b. The spindles 7a rest on a rail 9 pre-set for height on a side frame 2 of the conveyer 1 while the spindles 7b rest on a rail 10 mounted for vertical movement by an actuator 20. Springs 15 normally hold the rail 10 in its upper position so that the belt 5 is held in driving contact with the rollers 4 by the rollers 6. When an article passes over the discharge zone A it actuates a switch 40 connected via a timedelay (not shown) to the actuator 20. If the article clears the switch 40 before the time-delay actuates the actuator 20 the belt 5 remains in driving contact with the rollers 4. If the article is obstructed then the actuator is actuated to move the rail 10 down so that the drive to the rollers 4 is removed though the belt 5 continues to move. Rollers 4a in the zone A are continuously operated so that when the obstruction is cleared the article is discharged, releasing the switch 40 which initiates raising of the rail 10 so that driving contact of the belt 5 with the rollers 4 is resumed. Fig. 6 shows a conveyer in three sections 200, 201, 202 with a prime mover 100 for the belt 5. Additional switches 40 in zones C control the previous sections 201, 202 through associated actuators 20. Figs. 7, 9 show an accumulating conveyer 50 wherein articles (not shown) are supported on wheels 56 mounted on shafts 52, the articles being driven by a narrow endless belt 60 normally held in contact with the underside of the articles by supporting wheels 58 on hangers 57 pivotally mounted on the shafts 52 and held by springs 68 in article engaging position. Article detecting wheels 59 are mounted on frames 57a connected to frames 57 by a linkage assembly 61 for simultaneous movement so that when the detecting wheels 59 are depressed by an article frame 57a pivots about its mounting axle 52 so that frame 57 pivots and the supporting wheels 58 drop and the belt 60 disengages any article in the vicinity of that hanger 57. An actuator 20a controlled by a switch 40 and time delay (as in Fig. 1) may operate a cable 66 connecting all the hangers for simultaneous disengagement of the belt 60 along the length of the conveyer 50 controlled by the cable.
Patent GB-838703-A (GB)
Title: Improvements relating to the cleaning of gases from aluminium furnaces and to the recovery of fluorine values therefrom
Inventor: RAMSE KRISTIAN FREDRIK LANGFEL
IPC: C01B7/19
Filed: 1956-05-22
Abstract: The fluorine content is recovered from electrolytic aluminium furnace gases by washing the gases with a continuous circulation of an aqueous HF-absorbing liquid, precipitating fluoride in the used washing liquid, and recirculating the used washing liquid, with or without precipitate, and controlling the pH value of the washing liquid to less than 7, preferably less than 5.  The liquid may be in continuous circulation in a closed system washing plant and fluorine-containing material may be precipitated in the circulating system itself and continuously, or intermittently, separated. Alternatively, a proportion of the circulating liquid may be continuously, or intermittently, withdrawn, fluorine-containing material precipitated in a separate system, and residual liquid returned to the circulating system.  The precipitant may be included in the circulating liquid, or continuously, or intermittently added thereto.  The washing liquid may contain, or have added thereto, soda, or other alkali metal hydroxides, or carbonates, in such restricted quantity that acid sodium fluoride is formed.  Sodium aluminium fluoride is precipitated from the resulting saturated fluoride solution: (1) by aluminium fluoride; (2) by sodium aluminate and bicarbonate; or (3) sodium aluminate and carbon dioxide.  In reactions (2) and (3) the regenerated liquid, which contains soda, is only added to existing wash liquid in accordance with the soda consumption therein.  Pure water may be used as washing liquid and sodium aluminium fluoride may be precipitated from the resulting HF solution by sodium aluminate.  The sulphurous content of the gases may be removed subsequently by passage through an irrigated limestone tower.
Patent GB-1249412-A (GB)
Title: Improvements in or relating to mine roof supports
Inventor: OXLEY THOMAS GRAEME
IPC: E21D17/054
Filed: 1969-03-26
Abstract: 1,249,412. Mine roof supports with cantilever extensions. A. G. WILD & CO. Ltd. 12 Feb., 1970 [26 March, 1969], No. 15828/ 69. Heading E1P. In an advancing mine roof support having a pivotal cantilever extension 9, see also Fig. 5 (not shown) for a slightly modified arrangement, the member 9 consists of two I-section arms interconnected by a canopy 24 loosely connected thereto to permit different degrees of displacement of the arms under working conditions, see Fig. 6 (not shown). The members 9, 24 are interconnected by loosely fitting bolts or rivets 28, 29 passing through aligned apertures in the members and being retained therein by means such as a split pin, see Fig. 4 (not shown).
Patent GB-670519-A (GB)
Title: Apparatus for measuring the surface temperature of a moving surface
IPC: G01K13/08
Filed: 1949-06-16
Abstract: 670,519. Measuring temperature electrically. YOXALL, L. S. (Foxboro Co.). June 16, 1949. No. 16093/49. Class 40 (i). For measuring the temperature of a moving surface, e.g. that of a drying or calender roll, a measuring head is used including a tip adapted to bear resiliently against the surface and having fixed thereto a temperature sensitive resistor or a thermocouple. As shown, Fig. 1, the measuring head 24 is carried by an arm 26 pivoted at 28 and an adjustable counterweight 32 determines the force with which the head 24 engages the roll 10. The surface temperature is measured by a recording meter 40, e.g. as described in Specification 646,981, which creates a pneumatic pressure in a pipe 44 corresponding to the temperature which through a controller 16 and valve 14 regulates the steam supply to the roll 10 to maintain the surface temperature constant. The temperature responsive element comprises a wire coil 78, Fig. 6, e.g. of nickel wound on a mica strip 76 and covered by glass fabric insulation 80 impregnated with a silicone varnish. The element is clamped in the bent over end of a metal shoe 72 screwed at 82, Fig. 2, to an insulating block 74 releasably held by a spring clamp 90, 94, 96 in engagement with the rear face of a face plate 64 resiliently mounted in an aperture 58 in the measuring head casing 46 by springs 60. The face plate 64 is curved to accommodate the roll surface and conducts heat from the roll to the insulating block through an intervening metal plate 86 so that there is substantially no heat flow along the shoe 72 to the block whereby the resistor element readily assumes the temperature of the roll surface. If desired, a further shoe, Fig. 8 (not shown) may be provided for conducting heat direct from the roll to the insulating block 74. The leads 79a from the resistor element are taken through apertures in the block and leads 106 to a terminal block 110 from which a cable 38 including in known manner a temperature compensating lead, extends to the measuring instrument. The face plate 64 and two facing strips 118 on the casing 46 which limit the displacement of the face plate are made of a low friction, e.g. a graphited, heat insulating bearing material.
Patent GB-677107-A (GB)
Title: Improvements in or relating to apparatus and method for cutting tubular stock
IPC: B23D21/14
Filed: 1950-06-28
Abstract: 677,107. Shearing; angular bending. STEEL PRODUCTS ENGINEERING CO. June 28, 1950 [July 2, 1949], No. 16139/50. Class 83 (iv). In apparatus for severing tubes into lengths, pairs of internal and apertured cutters in the form of a sub-press mechanism are reciprocated in two directions by downward movement of the press head. The tube is supported by a mandrel 30 which carries centring rolls 36, a fixed cutter 50, a movable cutter 51 and a supporting member 52. The members 50, 52 are secured by bolts 57 and the cutter 51 is allowed slight movement on distance-pieces clamped between the members 50, 52. The external cutters comprise a movable cutter 71 clamped with slight freedom between a fixed cutter 70 and a member 72 mounted on a base 27. A plate 25 on the press-head carries cams 100, 101 which, on the downstroke of the press, engage a holder 90 in which the apertured cutters are mounted to move the cutters 51, 71 laterally with respect to the cutters 50, 70 to sever partially the tube. The cams may centre the cutters or move them in the opposite direction. At the bottom of the downstroke fingers 106 are lowered to depress the cutters 51, 71 in opposition to spring plungers 95 to complete the shearing. The mandrel 30 is supported on stands, Fig. 1, not shown, and is centred by a pivoted latch 45 which is displaced when a tube is fed from the left, Fig. 2. Work clamp. The tube is clamped to the member 50 during shearing by pivoted clamps applied by cams 136 on the plate 25. A pivoted work-stop 140 is mounted on a tube 151. When the press-head reaches the bottom position a bolt 166 contacts an arm 165 to turn a shaft 161 with lever 163 contacting an extension to lift the work stop to allow removal of the severed tube. Straightening, Fig. 8. The tubes are inserted from the left, Fig. 2. Dented tubes obstructed by the cutters are severed and the dented portion straightened between a mandrel 175 and a spring-raised member 180 reciprocated by a rod 185 from the plate 25.
Patent GB-1168031-A (GB)
Title: Four-Wheel Drive Vehicle and Power Transmission Arrangement
IPC: F16H61/56
Filed: 1968-04-04
Abstract: 1,168,031. Vehicle drive arrangements. GENERAL MOTORS CORP. 4 April, 1968 [25 May, 1967], No. 16251/68. Heading B7H. [Also in Division F2] A four-wheel-drive vehicle has separate power paths to the front and rear wheels, each path including a hydrodynamic torque converter and a variable-ratio gear, and means is provided for varying the power capacity of each torque converter to meet the varying loads on the front and rear wheels. In a typical arrangement the rear wheels will bear the greater portion of the vehicle's weight when stationary, and the front torque converter is therefore of smaller size (and therefore smaller power capacity) than the rear torque converter, and the reactors of both torque converters have variable incidence blades to vary their power capacity. The individual reactor blades of each reactor are mounted on cranked pins the ends of which are received in a groove of a sleeve which can be shifted axially to vary the blade angle by a fork 72 fast with a control rod 76. The blades of the two torque converters are adjusted simultaneously but in opposite senses so as to increase the capacity of one torque converter and reduce that of the other. The rod 76 can be adjusted manually by a lever 82 operating in a gate 88 and having a pin-and-slot connection 86 with the control rod. Automatic control of the blade angle is provided by an hydraulic accelerometer 90 acting through a U- shaped rod 92 on the lower end of a lever 96 which is axially fast on the control rod 76 but can pivot relatively thereto. When the torque converters are to be controlled manually the lever 96 is pivoted about the rod 76 to disengage its end from a collar 102 on the accelerometer rod 92. The front wheels may be driven by the front torque converter by way of a two-ratio gear, and the rear wheels by the rear torque converter and a two-ratio and reverse gear, the two gears being controlled by a common manual lever which controls the forward ratios simultaneously and puts the front gear into neutral when the rear gear is put into reverse. If fourwheel drive is required for reverse a two-speed and reverse gear is used for the front gear.
Patent GB-291722-A (GB)
Title: A method of impregnating high tension electric cables
Filed: 1928-06-05
Abstract: 291,722. Felten & Guilleaume Carlswerk Akt.-Ges. June 3, 1927, [Convention date]. Cables and conductors, processes for making.- Oils and mixtures of oils and resins for use in the impregnation of high tension cables, are, during the impregnating operation or previous storage, kept in closed vessels the upper part of which contains a chemically inert gas such as nitrogen for the purpose of preventing the incorporation of oxidized products which lower the insulating properties. Specifications 196,611, 205,108, and 226,790, [all in Class 38 (ii), Electric currents, Converting &c.], are referred to.
Patent GB-1323188-A (GB)
Title: Process for the preparation of o-aminobenzonitrile
IPC: B01J21/08
Filed: 1971-05-21
Abstract: 1323188 Preparation of O-aminobenzonitrile BOFORS AB 21 May 1971 [1 June 1970] 16403/71 Heading C2C O-Aminobenzonitrile is prepared by treating O-nitrotoluene with NH 3  in the presence of a dehydration catalyst at an elevated temperature, preferably from 350 to 550 C.
Patent GB-545911-A (GB)
Title: Improvements in and relating to the production of granules or coarse powder of aluminium
IPC: B22F9/08
Filed: 1940-11-13
Abstract: 545,911. Granulating aluminium. JAHN, A. R. Nov. 13, 1940, No. 16448. [Class 82 (ii)] In the production of granular or coarse powder of aluminium, a stream of molten metal is passed through a feed nozzle located centrally in a chamber and issues centrally of an annular stream or annular series of streams of hot compressed air to which a whirling movement is imparted and which impinges on and crosses the stream of molten metal at a very acute angle, e.g. 15-20 degrees, the comminuted metal then falling into water and being solidified in the form of grit. Molten metal issuing from the end of the nozzle 18 of a chamber 19 is acted upon by hot compressed air from an annular jet formed by the nozzle 18 and a central opening 15 in a circular chamber 13 provided with a concave bottom and an opening 17 through which the nozzle 18 passes. The chamber 13 is mounted in the upper conical part 6 of a tank 1; the lower conical part 5 having a discharge valve 7, being connected to the upper part 6 by a cylindrical portion 4. Cooling liquid is fed to the part 5 by a pipe 11, the liquid being maintained at a predetermined level 10 by a pipe 8. An air vapour vent 12 is provided in the part 6. The chamber 13 is provided with a tangential air inlet 23 so that a whirling action is imparted to the air therein. The container 19 may be heated by a heating element 21. The jet may be in the form of an annular series of holes which may be connected by slits.