baber/WOPTO huggingface dataset:
Patent GB-672796-A (GB)
Title: Improvements in and relating to electric heating and cooking devices particularly waffle irons
IPC: A47J37/06
Filed: 1949-07-01
Abstract: 672,796. Electric resistance heaters. BRITISH THOMSON-HOUSTON CO., Ltd. July 1, 1949 [July 1, 1948], No. 17486/49. Class 39(iii) An electric heater such as a waffle iron has a resistance wire 7 supported on the outer wall of a flat annular insulating brick 8 having several adjacent radial tubular passages, the two ends of the heating wire being directed inwardly through two separate passages 13 to the inside of the annulus and joined in these passages to two current supply wires 15 which are folded to pass outwardly through other upper radial passages 19 in the annulus. The heater 7 is held in a circumferential groove formed by alternate segmental proelectro responsive device moves the manuedges of the brick 8. The passages 19 are open at the top and are closed by a circular plate 20 held on the brick by a central screw 22 and having a peripheral flange 24, which has an opening 25 for passage of the conductors 15. The folding back of the conductor wires 15 within the bricks anchors the heater in the groove. Connectors between the ends of the heating wire 7 and the conductors 15 extend into the passages 13.
Patent GB-496502-A (GB)
Title: Improvements in helicopters
IPC: B64C39/02
Filed: 1937-06-23
Abstract: 496,502. Helicopters. HAMMOND, E. V. June 23, 1937, No. 17488. [Class 4] Relates to driving means for helicopters of the kind in which vanishing of the torque impressed on the rotor causes reduction in rotor blade pitch angle. A helicopter is fitted with a single rotor comprising blades m, Fig. 1, connected by flapping pivots to sleeve members k carried by a hub i either of spoke or of disc form freely rotatable on a shaft c. The rotor hub is driven by links n, Fig. 5, pivotally connected at one end to lever arms k<3> formed on the members k, which members are rotatably secured to the hub, and at the other end to a gear wheel d freely rotatable on shaft c and adapted to be driven by engine n through a free-wheel device and if desired a clutch. Rotation of sleeves k is limited by stops j<2>, j<3> on the hub i which co-operate with abutments k<4>, k5 on the sleeve. The stops define the maximum and minimum pitch angle positions of the blades. The arrangement is such that when gear d is driven by the engine sleeves k are rotated to maximum pitch angle position whilst when the rotor over-runs the gear d the sleeves k are forced by links n to the dotted line position of Fig. 5 corresponding to an autorotational valve of pitch angle. The lenth of link n and the positions of the stops may be adjustable. A fin b and tail-plane s incorporating trimming flaps are provided. The helicopter described is primarily intended to be flown anchored and to carry out the functions of a kite balloon. The machine need not carry a crew and may be used to carry a television camera to permit an observer on the ground to scan enemy country in time of war. Anchoring and stabilizing means comprise a cable q, Fig. 8, connected to a winding drum r and divided at the upper end into wires q<1> connected to the ends of laterally extending outriggers p and a wire q<2> (not shown) connected to the tail of the machine and adjustable in length. An electric motor may be employed for driving the rotor, receiving energy from a source on the ground.
Patent GB-933778-A (GB)
Title: Improvements in or relating to side-delivery rakes
IPC: A01D78/00
Filed: 1960-05-18
Abstract: 933,778. Haymaking machines. PATENT CONCERN N.V. May 18, 1960 [June 10, 1959], No. 17541/60. Class 6(3). A side-delivery rake of the rake-wheel kind comprises a main-frame 7 supported on groundwheels 2, 3, and a rake-wheel-carrying frame 4 mounted on the main frame by parallel links 5, 6 so as to be adjustable relatively thereto and fixable in various adjusted positions. As shown, the second frame 4 is in two aligned parts 58, 59 having terminal flanges 60, 61 on their abutting ends and being held in alignment by spring-loaded bolts. The parts have integral stub-axles 20, 21, 24, 25, 26 on which are mounted rake-wheels, such as 27. The parallel links have bell-cranked extensions 38 interconnected by a rod 40, a spring 43 being attached between the rod and the main frame 7 to reduce the rake-wheel pressure on the ground. The device is towed by an arched tow-bar 44 which extends over the rakewheels and has a clevis 45 for attachment to a tractor draw-plate. A hand-lever 52 on the tow-bar is connected by cables 44, 45 and bell-cranks 56, 53 to the coupling rod 40 so that the rake-wheels can be lifted by the tractor driver. One of the wheels, 3, is a castor and the other, 2, has a lockable swivel-axis. Specification 933,779 is referred to.
Patent GB-1447173-A (GB)
Title: Warp knitted interlining material
IPC: A41D27/06
Filed: 1974-04-22
Abstract: 1447173 Fusible interlinings KONINKLIJKE TEXTIELFABRIEKEN NIJVERDAL-TEN CATE NV 22 April 1974 [20 Aug 1973] 17566/74 Heading B2E [Also in Division D1] A warp knitted interlining material (see Division Dl) has thermoplastic synthetic resin discontinuously applied on one side. The synthetic resin may be spot coated or particulate. The fabric may be knitted from continuous filament nylon 66 yarn with laid in threads of staple fibre yarn and is preferably napped or raised.
Patent GB-667405-A (GB)
Title: Improvements in or relating to the production of magnesium base alloys
Inventor: EMLEY EDWARD FREDERICK
IPC: C22C1/02
Filed: 1949-07-04
Abstract: A composition for use in producing magnesium base alloys containing rare earth metal consists of at least one rare earth metal fluoride, sufficient potassium fluoride to dissolve the rare earth metal fluoride at the alloying temperature, and at least sufficient quantity of an alkali metal chloride to prevent violent reaction, any alkaline earth metal chloride present not exceeding 5 per cent.  The potassium fluoride is preferably at least in equimolecular proportion to the rare earth metal fluoride and the alkali metal chloride is preferably at least one chemical equivalent of the potassium fluoride.  The composition may also contain sodium fluoride up to 5 per cent, chlorides and oxides of rare earth metals up to 10 per cent each and not exceeding 15 per cent in total, oxides inert to magnesium and which do not react with chlorides of rare earth metals up to 5 per cent, fluorides of alkaline earth metals up to 5 per cent and bromides of alkali metals and alkaline earth metals up to 10 per cent.  Lithium chloride and bromide, if present, should preferably not exceed 10 per cent.  Thus the composition may contain: rare earth metal fluoride, 25-75 per cent; potassium fluoride, 10-30 per cent; alkali metal chloride, 15-50 per cent.  Specifications 342,586, 652,227 and 652,235 are referred to.
Patent GB-718103-A (GB)
Title: Control of healds in a circular loom
IPC: D03D37/00
Filed: 1951-07-27
Abstract: 718,103. Circular loom shedding mechanism. QUALITEX-SOC. DUNOD & CIE. July 27, 1951 [July 27, 1950], No. 17818/51. Class 142(2) Groups of healds 43, Fig. 2, are attached to sliders 42 disposed in two layers around the central shaft 67 of the loom and are drawn inwards periodically by two cams 40 of identical profile acting on rollers 40a on the sliders; lubricant is circulated through a pipe 54a and channels 55, 162 by an electrically - driven pump 52. Outward movement of the healds is effected by springs 58, Fig. 4, housed in concentric cylinders 56, 57, to the inner of which the healds are attached. When the healds arrive at their innermost position, they are locked by a plunger 59 entering a hole in the inner cylinder 57; half the plungers are subsequently retracted by solenoids 65 energized under the control of an endless pattern strip by brushes completing circuits through perforations in the strip there being twice as many brushes as there are shuttles; a rotary distributer switch between the brushes and the magnets causes the magnets to operate in succession to produce a travelling shed for each shuttle. The cylinder 57 may be locked by balls 124, Fig. 5, wedged into a groove in the cylinder by a cone 125 withdrawable by an electromagnet.
Patent GB-758882-A (GB)
Title: Improvements in or relating to brake assemblies
IPC: F16D55/14
Filed: 1954-06-17
Abstract: 758,882. Combined disc and drum brakes. BENDIX AVIATION CORPORATION. June 17, 1954 [July 20, 1953], No. 17840/54. Class 103 (1). In a combination disc and internal shoedrum brake, operation of the brake is initiated by supplying fluid pressure to the space between the two pistons 46, Fig. 2, of each of a pair of friction units, 10 and 12, Fig. 1. The pads 48 on the pistons 46 engage the opposite radial sides of the wheel rotated drum 24 by which they are displaced circumferentially so that each friction unit pivots about its mounting 16 and the friction linings 40 are moved radially to engage the axial surface of the drum. The fluid pressure supply to the actuator cylinders is transmitted thereto by pipe 74 and conduits leading through the mounting pivots 16. Automatic shoe clearance adjusters, as in Fig. 4, are provided having unidirectional action between the washers 70 and plungers 62 with shoe clearance determined by the play of the pin 64 in the slot 66. When the rotation of the drum 24 is the opposite of that indicated by the arrow in Fig. 1, the shoes 10 and 12 tend to be pivoted away from the drum and only the pads 48 exert a braking effect. In Fig. 7, however, is shown another embodiment in which the shoes 10b and 12b will anchor at either end and be moved towards the drum for either direction of rotation.
Patent GB-136140-A (GB)
Title: Improvements in or relating to Paper Layers for Printing Machines.
Inventor: BIERI PAUL
IPC: B65H3/08
Filed: 1919-07-18
Abstract: 136,140. Bieri, P. Dec. 5, 1918, [Convention date]. Pile tables for sheet feeds; separators; carriers.-Relates to apparatus for separating sheets from a pile and depositing them on a conveyer, and automatic means for raising the pile as required. The separator consists of a series of suction nozzles 9<3>, Fig. 1, with inclined ends, extending from a tube 9<1> communicating constantly through a hollow connecting-rod 12, crank 16, and shaft 13 with a suction plant, and a series of compressed air nozzles 9<5> extending from a tube 9<2> fixed within the tube 9' and communicating with a compressed air reservoir. The tubes are freely mounted in slides 8 movable in guides 7 pivoted on the shaft 13, and are slightly rocked in their reciprocation, so that the suction nozzles can take the front end of the top sheet and bent it upwards into position for the compressed air nozzles to assist in the separation, by arms 10 on the tube 9<1> carrying a roll 10<1> contacting with a fixed cam piece 11, which is interchangeable for various thicknesses of sheet. The separated sheet is carried forward and deposited on the conveyer 20 by the movement of the slides 8 along the guides 7 which are lifted at their forward end, to enable the nozzles to clear the front stop 3<1> of the pile, by rotary cams 5 contacting rolls 7<2> on the guides. The tubes are reciprocated by the rod 12 which is connected by a wooden pin to a crank 16 on the shaft 13 rocked by an arm 14 and rod 15 from a crank-disk 17<1> on a shaft geared with the rolls supporting the conveyer. The pile table 2, Fig. 5, is raised automatically under the control of a feeler 36 on a rock shaft operable through an arm 37, link 38, and pivoted lever 28 from a cam 27 on the shaft 17, the arm 37 also contacting a three-armed pivoted counterweighted lever 39 adapted to engage the end of a pivoted lever 25 which is rocked by a cam 24 on the shaft 17 to rotate the lifting-screws 30 by means of ratchet gear 34 and an arm and link 35. When the top sheet of the pile contacts the feeler 36, the link 38 prevents the lever 28 from following the cam 27, and the lever 39 is held in position to engage the lever 25 and prevent it from following the cam 24 so that the ratchet gear 34 is not operated.
Patent GB-842338-A (GB)
Title: Process for the production of solid urethane polyisocyanate-urea diisocyanate mixtures and mixtures produced by this process
IPC: C08G18/80
Filed: 1957-06-06
Abstract: The invention comprises mixtures of compounds of the following general formulae:  <FORM:0842338/IV(b)/1> and <FORM:0842338/IV(b)/2> where R is an aliphatic, cycloaliphatic, aromatic or araliphatic radical, which may be substituted with e.g. chlorine or an alkyl group, x is 1-5, Y is a straight or branched chain aliphatic radical which may contain oxygen or sulphur as hetero atoms, ester groups, isocyanate groups and/or urethane groups, or an aliphatic-aromatic, cycloaliphatic or heterocyclic radical, the linking of Y to the oxygen atoms taking place through aliphatic radicals.  The compounds are prepared by reacting 1 mol of an organic di-isocyanate or a mixture of such compounds, with less than 1 mol of a mixture of water and a polyhydric alcohol or mixture of such alcohols, in the presence of an inert solvent, Many examples are given.
Patent GB-717993-A (GB)
Title: Improvements in or relating to a vacuum tube voltmeter adapted for detonation measurements
IPC: G01R17/16
Filed: 1952-07-17
Abstract: 717,993. Peak voltage measurement; measuring bridges. PHILLIPS PETROLEUM CO. July 17, 1952, [Nov. 26, 1951.] No. 18094/52, Class 37. [Also in Group XXXVIII] A balanced vacuum tube voltmeter e.g. for measuring unidirectional voltage waveforms representing the intensity of detonation in an internal combustion engine comprises triodes 142, 143 directly cathode coupled to the grids of corresponding triodes 150, 151, whose cathodes are interconnected by a load network comprising high resistors 155, 157 and a low resistor 156 across which the indicating meter 159 having an earthed case is connected over leads 160, 162; the junctions of resistors 155, 156 and 156, 157 being earthed through high resistors 158, 161. Thus the meter and its leads are maintained substantially at earth potential without impairing the measurement sensitivity of the arrangement. The signal to be measured is applied to the grid of triode 142, while the grid of triode 143 is energized by a balancing signal derived from a potentiometer 144, 144a, 145 across a voltage source 75 stabilized by a voltage regulator tube 72; the balancing signal being adjustable to cancel out the effect of the load of the measurement signal source on the grid of triode 142.
Patent GB-169789-A (GB)
Title: Improvements in or relating to tank glass melting furnaces
IPC: C03B5/237
Filed: 1920-07-02
Abstract: 169,789. Frink, R. L. July 2, 1920. Gaseous-fuel furnaces. - In a gas-fired tank glass-melting furnace a special arrangement of ports &c. is provided to minimize reducing action on the metal. Gas from adjacent producers 10 enters at both sides through a number of transversely directed ports 3 and meets heated air rising in passages 1. Preliminary combustion takes place in chambers 6 and the burning gases then pass longitudinally through the furnace into the working chamber 11 which they leave immediately through ports 8 directed rearwardly and transversely of the inlet ports. The air is supplied in excess and owing to this and the arrangement of the air ports 1 and the rapid eduction of the gases from the working end 11 contact of reducing gases with the metal is avoided.
Patent GB-1543289-A (GB)
Title: Apparatus for resiliently receiving impact forces
IPC: B61G11/02
Filed: 1977-05-02
Abstract: The outer housing part (1) of the device is supplemented by two half-shells (5) which are welded onto it and are attached in the axial extent of the housing part (1). The free end faces, facing the pressure plate (1a), of the half shells are supported on corresponding end faces of a collar (2b) on the inner housing part (2) as a result of which the two housing parts (1, 2) are held under the effect of the pretensioning force of the spring (8). Between the half shells (5) and the inner housing part (2), a sliding bushing (4) is arranged. The present device is more resistant to deformations and sealed better against dust and moisture than previously known devices of the generic type. <IMAGE>
Patent GB-966570-A (GB)
Title: Alloys of columbium
IPC: C22C27/02
Filed: 1961-05-19
Abstract: A niobium-base alloy which may be rolled into sheets at temperatures as low as 300  DEG F. has the following percentage composition by weight: .W.9-11 .Mo.1-2 .Zr.0.5-1 .Nb.the balance The alloy may also contain B 0.01-0.3.  In an example, a typical alloy is rolled at 500 DEG F. to a thickness of 60 mils.  The sheet was then stress relieved at 2400  DEG F. for 1 hour in vacuum. Specification 869,937 is referred to.
Patent GB-673089-A (GB)
Title: Improvements relating to electrical control systems
IPC: H02J7/12
Filed: 1949-07-12
Abstract: 673,089. Magnetic amplifiers. ELECTRIC CONSTRUCTION CO., Ltd., and MILNE, J. C. July 6, 1950 [July 12, 1949; Dec. 23, 1949], Nos. 18417/49 and 32989/49. Class 40 (iv). [Also in Group XXXV] In a D.C. supply system, as for a telephone exchange, having a battery 5 floating across a load 1, current flowing to or from the battery 5 through serially-connected windings 17, 18 of two chokes varies the degree of saturation of the cores 10, 11 thereof, thereby varying the inductance of oppositely and serially connected A.C. windings 8, 9 of the chokes so that the A.C. input and hence D.C. output of the system are regulated to maintain constant voltage and the battery current to a low value when the battery is in a normal state of charge. In the embodiment shown, the A.C. windings 8, 9 control the supply 3 to a transformer 4 feeding a rectifier 2 connected across the load 1 and battery 5. Basic magnetization of the choke cores 10, 11 is provided by saturating bias windings 13, 14 supplied from an independent D.C. source 15 which is applied through a potentiometer 16 to vary the degree of saturation and permit charging of the battery. Short-circuited windings 19, 20 cancel out harmonics. In operation, should e.g. the system output voltage rise with load fluctuation, a charging current flows in the battery 5. The effect of windings 17, 18 then opposes that of windings 13, 14 to decrease magnetization of cores 10, 11 and increase the inductance of windings 8, 9 and hence reduce the output voltage of the transformer 4 and rectifier 2. In modifications the rectifier may supply the main field winding or alternatively an auxiliary field winding either aiding or opposing the main field winding of a D.C. generator, and the D.C. bias supply is taken from the battery 5. In both cases the single rectifier may be replaced by two, one of constant output and the other variable, as shown. In a further modification, a two-stage control comprises two further similar chokes fed by the controlled D.C. supply from the transformer and rectifier and supplying a further transformer and rectifier controlled to vary the output voltage and series-connected with a rectifier supplying the base load. In this embodiment, the main control chokes have further control windings connected through a non-linear resistor to the battery to effect a taper charge.
Patent GB-1531162-A (GB)
Title: Lifting apparatus for vehicles
IPC: B66F7/20
Filed: 1976-05-05
Abstract: 1531162 Maintaining lift level W VOGLER 5 May 1976 [5 May 1975 4 Feb 1976] 18438/76 Heading B8L A lifting apparatus for vehicles comprises a lifting platform support column 101 disposed on the lifting ram of a hydraulic pressure jack and provided with teeth 102, 103, over the lifting range of the apparatus, a locking device 105 having projections spring-biased into engagement with the teeth, and hydraulic or pneumatic means for withdrawing the projections from teeth engagement when the column height is to be altered. The locking device 105 is slidable along a guide 115 and along a pair of shafts extending from a holding means 117 at the opposite side of the column, the bias spring for the device 105 being mounted around the shafts. To withdraw the locking device out of column engagement, an actuating lever 107 is hydraulically drawn outwardly of a recess 106 in the locking device 105 whereby an inclined surface 112 on the lever 107 abuts a similar inclined surface 113 on a locking bolt 114 to depress the bolt downwardly against spring bias so that the main part of the lever 107 may pass thereover. At this stage, lost motion between a slot 108 in the lever 107 and a pin 111 on the device 105, is taken up and the device 105 is withdrawn by the lever 107. A plurality of support columns may be operated in synchronism to raise and lower a single platform, the columns being interconnected by a rack-and-pinion arrangement to prevent any out of phase movement of the rams which are hydraulically operated and double-acting. Fluid exhausting from either side of the ram in the pressure jack is throttled to more positively control the ram motion.
Patent GB-319418-A (GB)
Title: Improvements in or relating to direction finding radio receivers
IPC: G01S1/02
Filed: 1928-06-26
Abstract: 319,418. Igranic Electric Co., Ltd., and Sinclair, D. June 26, 1928. Directive signalling ; thermionic amplifiers ; receiving-sets, construction of.-In a direction-finding installation, particularly suitable for use on aircraft, the field and search coils of the radiagoniometer are housed in the same casing as, and are screened from the amplifier and detector valves and their circuit components. As shown in Fig. 1, the field coils 1, 2 from the directional loop aerials 3, 4 are coupled to the search coil 5, which forms the input to the first amplifier 6. These components are contained in the part 25 of the casing 24 shown in Fig. 2, the setting of the search coil being effected through a control knob 26. The valve equipment comprises two choke-coupled screened-grid amplifiers 6, 7, and a detector 10 coupled through a filter chain 20, 21, 22 to a low frequency amplifier 12. These and the associated circuit components are housed in a common casing as shown in Fig. 2. The tuning-condenser 8 is operated by the control knob 34. The first screened-grid amplifier may have a. tuned anode circuit, the condenser of which is coupled to the condenser 8. The battery connections are made through a five-point plug 36. Each valve is housed in a separate screen secured to the lid of the casing 24, the bulb being held against vibration by four bent-metal springs 30. The coupling choke 14 and grid condenser 17 and resistance 16 may be combined as at 27, Fig. 2, and mounted on the bulb of the valve as described in Specification 317,610.
Patent GB-390371-A (GB)
Title: Improved means for shutting-off a gas supply or like pipe in case of fire or when desired
IPC: A62C4/02
Filed: 1932-06-30
Abstract: 390,371. Preventing fires; valves. BARROW, C. F., 30, Argyle Square, Sunderland. June 30, 1932, No. 18545. [Class 47 (ii).] Means for shutting off a gas supply or like pipe in case of fire or when desired comprises a valve a which is urged towards its seat m by a spring e but normally is held in open position by an arm k which is pivoted on an upright pin n and engages a groove h in the valve stem c. The arm k consists of two parts soldered together, and is stiffened by a pivoted strut q. In case of fire, the arm k collapses, allowing the valves to close. The valve can also be closed at will by swinging the arm k about its pivot. When so closed, the valve can be locked by a clip t and padlock v, in order to prevent unauthorized consumption of gas. A ring g is provided for opening the valve.