baber/WOPTO huggingface dataset:
Patent GB-848174-A (GB)
Title: Variable pitch propeller
IPC: B64C11/32
Filed: 1958-10-13
Abstract: 848,174. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. Oct. 13, 1958 [Oct. 25, 1957], No. 32568/58. Class 114. An aircraft propeller comprises mechanism (such as a hydraulic or electric motor) for varying the pitch of the blades through normal and special pitch ranges means for locking the blades when said mechanism is ineffective to change the pitch, means to disable the locking means when said mechanism is in the special pitch range, and second means for locking the blades in the special pitch range while said disabling means renders the first mentioned locking means ineffective. In the embodiment shown the pitch change mechanism comprises a double acting piston 26 reciprocable in the dome 24 and having rollers 30 which engage cam slots 76 in a stationery sleeve 28 and cam slots 80 in a sleeve member 32 to rotate same about axis 19, teeth 34 thereon which engage teeth 36 on the propeller blades 10 then rotating the latter about axis 22. The rotatable sleeve member 32 carries the first mentioned locking means, namely a rotary pitch lock member 44 having teeth 48 which are urged by springs 42 into engagement with the teeth 50 on a stationery member. During pitch changing, actuating fluid for the piston 26 is also directed into a cavity 40 to force a member 62 to the left to move the locking member 44 against the springs 42 out of engagement with the teeth 50 . Loss of pressure in cavity 40 due to malfunctioning of fluid supply or drainage to line 47 through movement of valve 43 by governor 41 in response to propeller over-speed results in springs 42 engaging the pitch lock members, the teeth 48, 50 of which are ratchet shaped to prevent the pitch of the blades being decreased, i.e. moved towards zero pitch and reverse pitch range while permitting the pitch being increased, i.e. moved to the feather range. The disabling means comprises lugs 104 on a stationary member 60 which engage lugs 58 on rotary pitch lock member 44 in the feather and reverse pitch ranges to hold the teeth 48, 50 of the locking means out of engagement. The above mentioned second locking means engages whilst the disabling means is in operation and comprises friction engagement between surfaces 118 and 120 on lugs 58, 104 of the disabling means, this friction lock holding the blades at full feather position. The stationary sleeve 28 has lugs 78 which cooperate with lugs 86 on a stop ring 70 mounted via splines 84, 82 on the rotary sleeve 32 to define the maximum limits of the angle of pitch of the blades. Specifications 526,100, 600,376, 683,906, 719,701, 724,284, 754,095 and 777,572 are referred to.
Patent GB-980533-A (GB)
Title: Improvements in and relating to solid tyres
Inventor: WATTS ARTHUR JOSIAH
IPC: G21C19/105
Filed: 1962-08-24
Abstract: 980,533. Solid tyres. WATTS TYRE & RUBBER CO. Ltd. Aug. 9, 1963 [Aug. 24, 1962], No.32664/62. Heading B7C. A solid tyre, comprising a circumferentially extending series of radially extending and circumferentially aligned segments secured together to form a tyre annulus under the compression of an endless metal tie means, is characterized in that the angle of taper of each segment towards the inner periphery of the tyre is reduced or even reversed over a radially outer portion of the segment. Each segment is formed from the tread 12 and sidewalls 20 of a scrap tyre the shoulders of which are buffed so that the segments may be flattened and to provide the required variation in taper on each segment. The rubber and fabric segments are joined in pairs in fabric-to-fabric, rubber-to-fabric, or rubber-to-rubber relationship to form pads from which the tyre is subsequently formed. A rubber or rubber and fabric insert may be positioned between the segments of each pad or between adjacent pads. The inextensible tie means passes through an aperture 18 in each segment. Reference has been directed by the Comptroller to Specification 862,780.
Patent GB-645416-A (GB)
Title: Improvements in automatic small arms
IPC: F41A3/40
Filed: 1947-12-11
Abstract: 645,416. Automatic small arms. CHEVALLIER, A. L., and SOCHACZEWSKI, S. Dec. 11, 1947, No. 32672. [Class 119] Relates to short recoil automatic guns of the kind in which a floating inertia hood 12 sliding on the breech frame 2 unlocks and moves to open position the sliding breech bolt 29. According to the invention a spring 19 on the magazine tube 4 is compressed on barrel recoil and through a crutch 17 drives the hood rearwardly after overcoming its inertia, the hood having a pin and slot connection 13, 36 with the bolt to release the bolt lock 30 and move the block to open position. Fig. 4 shows the position of parts on short recoil of the barrel before the spring 19 has overcome the inertia of the hood 12, the hammer 57 being shown half cocked. The hood is retained in forward position by a lock 20, Fig. 1, pivoted at 21 which is released either by the recoiling breech frame or by inertia. The breech bolt 29 is opened against the action of a return spring 37 on a rod 39 which serves as an ejector. The hammer is fully cocked by a projection 41 on the firing pin 40 which is held by the bolt lock 30 when this is moved upwardly on release. The forward impact of the hood is taken by spring 19. In its rear position the hood is arrested by a leaf spring on the hood engaging a notch in the breech frame. Vertically sliding breech bolt locking blocks may replace the locking lever 30.
Patent GB-914106-A (GB)
Title: Improvements relating to weighing apparatus
Inventor: TERRY FRANCIS SIEVWRIGHT
IPC: G01G23/365
Filed: 1960-09-23
Abstract: 914,106. Weighing-apparatus. AVERY Ltd., W. & T. Sept. 22, 1961 [Sept. 23, 1960], No. 32688/60. Class 143. A potentiometer 2, forming a first analogue generator, is driven by the spindle 1 of the indicator of a weighing mechanism, its output thus varying in proportion to the load on the weighing mechanism (not shown) and a potentiometer 3, forming a second analogue generator, is driven by a slave motor 5 energized by an amplifier 6 which is connected to be responsive to the difference between the outputs of the two analogue generators, whereby an indicator or recorder 10, driven from the shaft 7 of the slave motor, responds to each change of load on the weighing mechanism so as to measure and/or totalize the net weight of each of, or the total of, a series of loads. An anti-fraud mechanism is incorporated which senses when the spindle 1 is at rest and operates an electromagnetic clutch 8, 9 to connect the shaft 7 to the indicator 10, the resultant adjustment of the second generator 3 necessary to achieve balance, thus being transmitted to the indicator as the weighing mechanism operates under the load. When the spindle 1 comes to rest the anti-fraud mechanism de-energizes the clutch 8, 9 and operates a motor 11 to return the indicator 10 to zero. The load, e.g. liquid, is also automatically discharged from the weighing receptacle, and after completion of the discharge the anti-fraud mechanism permits the next weighing cycle to commence. The apparatus may be modified to delay the recording and zeroizing operations of the indicator 10 till all of a series of weighings have been completed. Also the weight of liquid discharged from, rather than delivered to, the weighing receptacle may be totalized. A business machine or printer may be operated from the indicator mechanism.
Patent GB-1479080-A (GB)
Title: High spacer chairs for use in the manufacture of reinforced concrete structures
IPC: E04C5/20
Filed: 1975-08-05
Abstract: 1479080 Reinforcement spacers S VIGH 5 Aug 1975 [6 Aug 1974] 32698/75 Heading E1W A reinforcement spacer has a plastics base I with a web 11 and generally triangular supporting wings 10, and a metallic wire rod supporting portion 2 with legs fixed into the base. The portion 2 may be made of mild steel wire and the base 1 of high density polyethylene, polypropylene or nylon. The spacer is preferably made by injection-moulding a thermoplastics base, and inserting the legs of the wire portion 2 into the base after it has been ejected from the mould, but whilst it is still hot. Preferably holes 25 are moulded into the base. Alternatively the plastics can be moulded around the wire legs, with the leg ends preferably initially upset at 26. The wire legs can alternatively be inserted into the cast base after cooling, and be retained by glue. Fixing tabs 16, preferably apertured may also be provided.
Patent GB-1442933-A (GB)
Title: Low insertion force connector for modular circuit packages
IPC: H01L23/32
Filed: 1974-07-25
Abstract: 1442933 Two-part coupling MOLEX Inc 25 July 1974 [13 Sept 1973] 32810/74 Heading H2E A low insertion force connector 10 for connecting a modular circuit such as a large-scale integrated circuit 12, to a printed circuit board 16 comprises a carriage 26, base 22 and spring contacts 38. Movement of the carriage 26 from an outer position, where it is retained by resilient fingers 62 and shoulders 64, to an inner position, where it is retained by resilient tabs 68 and shoulders 72, causes the cam surfaces 40 to push the spring contacts against the leads 18 of the modular circuit 12 and so capture the leads 18 between the spring contacts and the walls 96 of recesses 34. The spring contacts are retained in the base 22 by resilient tangs 80 and transverse segment 82 and may be soldered to the printed circuit conductor 14 at the end 76.
Patent GB-1481953-A (GB)
Title: Manufacture of tubular type battery plates
IPC: H01M4/16
Filed: 1974-07-08
Abstract: 1481953 Paste-filling machine for tubular battery plates CHLORIDE GROUP Ltd 8 July 1974 [6 July 1973 9 April 1974] 32880/74 and 32886/74 Heading H1B The disclosure is similar to that of Specification 1,481,952 but the claims are directed to the paste-mixing characteristic of the pump 15 and to the re-circulation of the paste through the hopper 18 and pump in the intervals between filling the battery plates with the paste, Figs. 1-4. In the embodiment of Fig. 5 the paste is recirculated and mixed during filling of a batch of plates but is not so treated during filling of the ram.
Patent GB-1137740-A (GB)
Title: Improvements in or relating to circuit arrangements for single sideband transmission systems
Inventor: UNDERHILL MICHAEL JAMES
IPC: H03C1/60
Filed: 1966-07-22
Abstract: 1,137,740. Radio transmitting apparatus. MULLARD Ltd. 9 Oct., 1967 [22 July, 1966], No. 32996/66. Heading H4L. In an arrangement for limiting the grid current in the power output valve 14 of a single sideband transmitter, biased to operate in class AB1 and supplied by a driver stage 10, when the drive to the valve 14 exceeds a predetermined level the valve 14 will draw grid current from a constant potential line 20 whereby the current through resistor 16 will bias the emitter base junction of transistor 18 so that the transistor conducts. The collector of the transistor is coupled via resistor 21 to the grid of a valve in a preceding amplifier to affect the bias whereby the signal passed by this amplifier to the driver stage is reduced and the valve 14 ceases to draw excessive grid current. A diode 22 may be connected across the resistor 16 to prevent reverse grid current from damaging the valve 14.
Patent GB-1530785-A (GB)
Title: Scrap treatment
IPC: B30B9/32
Filed: 1975-08-07
Abstract: 1530785 Treating metal scrap BRITISH STEEL CORP 6 Aug 1976 [7 Aug 1975]  33079/75 Addition to 1381726 Heading C7D [Also in Division F4] Metal scrap is cooled to embrittlement temperature by contact with a primary cooling gas and is then fragmented. The primary gas is cooled by passage through a heat exchanger 10 supplied with a secondary coolant which is partially gaseous and partially in the liquid form, the secondary coolent leaving the exchanger in the gaseous state. The secondary coolant is obtained in part directly from a refrigeration plant 8 and in part from a liquid storage vessel 6 which is replenished by a liquifier 11 in series with the refrigeration plant. Preferably the replenishment is carried out during interruptions in the scrap cooling operation.
Patent GB-1507767-A (GB)
Title: Device for welding together a cover and a vessel of a thermoplastics material
IPC: B29C65/20
Filed: 1976-08-09
Abstract: 1507767 Seaming non-metallic sheet material TUDOR AB 9 Aug 1976 [15 Aug 1975] 33080/76 Heading B5K A device for welding together a cover and a vessel of thermoplastics material, e.g. to form an electric storage battery, comprises a welding tool consisting of two L-shaped heating checks 1, 2 movably disposed with reference to each other, the short side of one arm 10 of one cheek 1 being applied against the inner long side 12 of the other arm 11 of the other cheek 2 to form a rectangular frame. As shown, the cheeks 1, 2 are fixed to rails 3 movably mounted on holders 4, movement of the rails 3 being effected by hydraulic or pneumatic cylinders 5. Each holder 4 is mounted on a frame comprising a base 6 and columns 7 and may be movable along the columns 7. Each base 6 is movable in a direction parallel to either arm of both cheeks 1, 2. The device includes arrangements for holding the vessel and the cover, at least one of these arrangements being movable at right angles to the plane of the welding tool whereby, in operation, the vessel and the cover are pressed against the tool to heat the surfaces to be welded, the vessel and cover are separated from the tool which is then withdrawn, and the vessel and the cover are pressed together.
Patent GB-1465830-A (GB)
Title: Reducing boundary charges in semiconductor layers grown on a substrate
IPC: H01L21/265
Filed: 1974-07-26
Abstract: 1465830 Semi-conductors SIEMENS AG 26 July 1974 [3 Sept 1973] 33091/74 Heading H1K Boundary charges formed adjacent the interface of an insulating substrate and a semiconductor layer epitaxially grown thereon are compensated for by dopant atoms ion-implanted into the interface region. The dopant may be introduced (i) into the substrate surface prior to deposition of the semi-conductor layer, (ii) into a very thin initially deposited semiconductor layer upon which the remainder of the epitaxial layer is subsequently deposited or (iii) through the completed epitaxial layer to the interface region. The completed layer is preferably heated to "activate" the implanted dopant atoms; i.e. to cause them to move from interstitial sites to lattice sites. For Si-onspinal a suitable compensating dopant is P, while B is appropriate for Si-on-sapphire. As and In are also referred to. Circuit components formed in the epitaxial layer may include MOS transistors.
Patent GB-413188-A (GB)
Title: Improvements in household mangles
IPC: D06F61/04
Filed: 1933-11-27
Abstract: 413,188. Mangles. SELDAL, J. G., 15, Sauntesvej, Gentofte, Denmark. Nov. 27, 1933, No. 33188. [Class 138 (ii).] In a mangle, particularly one having three rollers, endless rubber bands 8 or spiral springs are passed over the top and bottom rollers to apply the pressure between the rollers and transmit the drive from the bottom roller which is driven by a crank handle 10. The ends of the middle roller are reduced so as to be clear of the bands. The machine frame 5 is pivoted at 11 so as to be lowered within a table frame when not in use.
Patent GB-770168-A (GB)
Title: Improvements in or relating to deflecting coil systems for the electron beams of cathode ray tubes
IPC: H01J29/76
Filed: 1953-12-01
Abstract: 770,168. Electromagnets. TELEFUNKEN GES FUR DRAHTLOSE TELEGRAPHIE. Dec. 1, 1953 [Dec. 24, 1952], No. 33283/53. Class 35. [Also in Group XL (a)] A deflecting coil system for the electron beam of a C.R.T. comprises a closed magnetic yoke 1 having two pairs of spaced parallel limbs defining a rectangular space for the C.R.T. and a pair of oppositely disposed single or unsectionalized deflecting coils 5, 6, where - in each coil is arranged around one of the limbs of one of said pairs so as to set up a non-hologeneous magnetic field in the space and flux modifying means 7, 8 which are short in relationship to the lengths of the coils are disposed adjacent the centres of the coils so as to reduce the intensity of the field substantially only in the region of the centres of the coils, thereby rendering the field nearly homogeneous. The flux modifying means may comprise auxiliary coils 7 or ferromagnetic screening sleeves 8. A sleeve 8 may comprise a sleeve of insulating material carrying insulated parallel iron wires or a sleeve wound from strip of sheet iron. Alternatively, open magnetic members extending around one-third or one-half of the peripheries of the coils can be disposed in the air space defined by the yoke so that the centre sections of the coils are screened from the space. A second similar set of deflecting coils, and flux modifying means can be mounted on the other pair of limbs of the yoke or a set of sectionalized coils 3<SP>1</SP>, 311, 41, 4<SP>11</SP> can be mounted on these other limbs to provide a substantially homogeneous deflecting magnetic field at right angles to the field provided by the coils 5, 6.
Patent GB-1162285-A (GB)
Title: Stabilization of Chlorinated Hydrocarbons
IPC: C07C17/42
Filed: 1967-07-20
Abstract: 1,162,285. Stabilization of chlorinated hydrocarbons. FMC CORP. 20 July, 1967 [21 July, 1966; 2 March, 1967], No. 33297/67. Heading C5D. Chlorinated hydrocarbons are stabilized by the addition of a lactam having up to 7 carbon atoms. Most preferred amount of lactam is 0À1 to 1% by weight based on chlorinated hydrocarbon, and the specified lactams are y-butyro, Y-valero and capro lactams. An epoxide and/or alcohol may also be incorporated in the composition. Preferred epoxides are those having 3-12 carbon atoms and their amount in the composition may be from 0À1-0À5% by weight of chlorinated hydrocarbon.
Patent GB-1186408-A (GB)
Title: Selective Removal of Nitrogen Dioxide and/or Oxygen from Gas Mixtures containing Nitric Oxide
IPC: B01J23/68
Filed: 1967-07-20
Abstract: 1,186,408. Purifying nitric oxide. BADISCHE ANILIN- & SODA-FABRIK A.G. 20 July, 1967 [21 July, 1966; 5 May, 1967], No. 33307/67. Heading C1A. NO2 and/or oxygen are removed from gas mixtures containing NO by catalytic reduction with hydrogen, the catalyst containing silver. The catalyst may also contain manganese and iron, and carrier materials, e.g. Al2O3, SiO2, diatomaceous earth. Silver, manganese and iron are preferably present as oxides, hydrated oxides or hydroxides; Ag2O, MnO2 and Fe2O3 are specified. A gas mixture containing up to 10% by volume of NO2 and up to 5% by volume of oxygen may be reacted at 100‹ to 700‹ C. using a catalyst containing 0À5 to 15% by weight of silver (calculated as Ag2O) NO-containing gases may be obtained by catalytic combustion of ammonia.
Patent GB-383752-A (GB)
Title: Improvements in and relating to cathode ray apparatus
IPC: H01J31/06
Filed: 1931-12-01
Abstract: 383,752. Cathode-ray tubes ; copying-telegraphy. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Sabbah, C. A. ; 1, Washington Avenue, and Gray, P. M. ; 19, Willett Street, both in Schenectady, New York, U.S.A.) Dec. 1, 1931, No. 33312. Convention date, Dec. 1, 1930. [Classes 39 (i) and 40 (iii).] Cathode-ray tubes for photographing pictures transmitted by radio or the wave forms of alternating currents or surge discharges, have an end wall 10, Fig. 1, providing transverse paths of high conductivity relatively to that in other directions and the photographic surface 16 is arranged outside the tube between the wall 10 and a flat auxiliary anode 13. The wall 10 may be composed of graphite crystals or of transverse insulated conductors 11, Fig. 3, and may be made by binding lacquered wires into a cable and cutting a transverse slice. The surface 16 is affected according to the position and intensity of the cathode ray due to a glow discharge which takes place in air between the wall 10 and the anode 13, and which may be invisible and of ultra-violet character. An apertured shield 8 is connected to the cathode 5. In radio reception of pictures, the anode 6 'and cathode 5 are connected to an amplifier 3 in the output circuit of the receiver 1 and the deflecting plates 17, 20 are controlled by a filter 22 to produce spiral movements of the cathode ray.
Patent GB-952882-A (GB)
Title: Means for controlling the air quantity to a liquid fuel burner
IPC: F23C7/00
Filed: 1959-10-02
Abstract: 952,882. Supplying air to liquid fuel burners. FUEL FIRING Ltd., and C. G. BETTERIDGE. Jan. 2, 1961 [Oct. 2, 1959], No. 33556/59. Heading F4T. In a liquid fuel burner the speed of the combustion air supplied to the burner nozzle is maintained substantially constant by regulating the total orifice area through which air issues at the nozzle in accordance with the volume of air supplied to the burner. As shown in Fig. 4, a rotary damper 31 controls the volume of air supplied through an inlet 30, cones 20, 21 control the entry of secondary air into the annular spaces between air tubes 15, 16, 17, and a primary air adjuster 14 connected to the cone 20 by a rod 18 regulates the aperture of slots 9 in a shroud 12 surrounding an atomizer 11. The cones 20, 21 are mounted on slidable concentric shafts 40, 41 so that when a lever 22 (Fig. 5) engaging a collar 23 on the shaft 40 is displaced manually or by a cam positioner mechanism 25, the shafts are displaced axially until the cone 21 engages the ends of the tubes 16, 17 and air flow therebetween is prevented. Continued movement of the lever 22 compresses a spring 29 and moves the cone 20 into engagement with the tubes 15, 16. Swirler blades 19 are disposed at the outlet ends of the tubes 15, 16, 17 and fuel is supplied to the atomizer 11 through a tube 10. In another embodiment, Fig. 6, shut-off sleeves 60, 61, 62 co-operate with frusto-conical flanges on the tubes 15, 16, 17 to progressively close the annular passages between the tubes. The shut-off sleeves 60, 61, 62 are carried by a spider 80 on a slidable shaft 40 actuated by an electric motor 25, manually, or by an air cylinder. The shaft 40 is linked to a butterfly damper controlling the air inlet 30 and to a fuel valve 82.