baber/WOPTO huggingface dataset:
Patent GB-536695-A (GB)
Title: Improvements relating to electromagnetic relays
IPC: H01H51/28
Filed: 1939-12-04
Abstract: 536,695. Electromagnetic switches. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ASKEW, J. E. Dec. 4, 1939, No. 31380. [Class 38 (v)] Two soft iror plates 6 mounted one behind the other on blade springs 2 are similarly magnetized by the stray field across a gap 1C in an electromagnet and repel each other thereby operating contacts 1. The contacts may be mounted on the strips 2 and may normally engage each other. The switch may be mounted in a glass container 5 which may contain oil to damp vibrations. In a modification, the core of the electromagnet is divided into two parts, and the switch arranged between and operated by the field across a gap 14. In another modification, the plates 6 are part cylindrical in shape and enclose an iron core piece to concentrate the magnetic field.
Patent GB-1190994-A (GB)
Title: Arc Welding Electrode for Steel
IPC: B23K35/30
Filed: 1967-07-07
Abstract: 1,190,994. Welding by fusion. KOBE STEEL Ltd. 7 July, 1967 [8 July, 1966], No. 31407/67. Heading B3R. [Also in Division C7] In an arc welding electrode having a steel casing containing a powder filling constituting 10-40% of the electrode, at least 30% of the powder comprises by total weight of the powder: 10-60% fluoride of at least one alkali metal, alkaline earth metal, rare earth metal, aluminium or titanium 6-25% carbonate of at least one alkali metal or alkaline earth metal 5-50% denitrodizing agent selected from Mg, Al, Zr or alloys thereof, the denitrodizing agent being at least 10% when adequate deoxidizers are not included in the powder. Up to half of the denitrodizing agent may be replaced by Mn or Si. The fluoride is preferably 30-60% CaF 2  or 30-55% CaF 2  and 5% AlF 3 . The carbonates are preferably magnesium or calcium. The agent may be a ferro-alloy or an alloy such as Al-Mg, Ca-Si-Al, Ca-Si-Zr. Other constituents referred to are Mn, Ni, Cr, Mo, B, C, V, W, Fe, Si, SiO 2 , ZrO 2 , A1 2 O 3 , MgO, MnO, MnO 2 , K 2 O, Na 2 O and CaO, Specified powder compositions are in percentages by weight: The casing of the electrode may be in the form of a tube with a longitudinal lapped seam or of complex forms such as shown in Figs. 2, 4 or 5 providing two or more cavities, 4, 4; 7, 8 or 12, 13, filled with powder. The denitrodizing agent is preferably concentrated in the inner cavity where such exists.
Patent GB-1049866-A (GB)
Title: Improvements relating to transistor circuits
Inventor: HALL RONALD CHARLES
IPC: H03K4/69
Filed: 1962-08-16
Abstract: 1,049,866. Saw-tooth circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 13, 1963 [Aug. 16, 1962], No. 31460/62. Heading H3T. A circuit for delivering a sawtooth current to an inductive load (e.g. a television line output stage) comprises two series-connected transistors TR1 and TR2 to which the input waveform is applied in parallel during the trace period, and a Zener diode Z connected to the junction of two equal capacitors C2, C3 across the output transformer. During the retrace period, the input waveform at 1 tends to cut off the transistors, but the Zener diode conducts and applies a positive potential equal to half the transformer back E.M.F. to the base of TR1. By emitter-follower action this is passed on to TR2 so that the back E.M.F. is shared equally by the two transistors. Diode D2 isolates the base of TR2 and the previous stages from the fed-back pulse. The Zener diode conducts briefly at the end of the forward stroke to replenish the charge on C2 and C3. Turn-off of TR2 is speeded by line pulses applied to TR3 which cause this to bottom and rapidly remove the stored charge from the base of TR2, thereby minimizing transient power dissipation in the junction and improving the efficiency of the recovery circuit C1, D1. During the trace period TR2 may be bottomed or may act as a linear amplifier.
Patent GB-942349-A (GB)
Title: Improvements in or relating to curb forming machines
Inventor: JR CHARLES EDWIN JENNINGS
IPC: E01C19/48
Filed: 1961-09-01
Abstract: 942,349. Laying roads. RENNER CO. Sept. 1, 1961, No. 31503/61. Heading E1G. A kerb forming machine comprises a frame, laterally movable road wheels, a hopper, with an outlet at one side, securable on the frame with the outlet adjacent either side, a housing for a compacting screw (not shown) securable to the frame below the hopper outlet, an extending nozzle to the rear of the housing and a shaft carrying the screw driven by rotary driving means. As shown the hopper 32 is mounted by means of clamps 33 on side frame members 10. Front frame members 11 are mounted for lateral movement along a slotted front frame member 13 and carry wheel supporting members 14, in which wheel supports 17, vertically adjustable by means of threaded rods 15, are telescopically mounted. Each support has an extension 20 on either of which a steering handle 21 may be mounted. A tubular rear frame member 12 passes through an aperture in a bracket 30 to which is rigidly secured a member 29. A wheel support 26 is telescopically and vertically adjustably mounted in the member 29. To vary the horizontal position of the wheels relative to the frame the bracket 30 is pivoted about the member 12, Fig. 7, and retained in a selected position by insertion of a pin 31 in aligned holes in the bracket 30 and member 12. The outlet 36 of the hopper 32 communicates with the compaction screw housing 38 removably mounted on transverse frame members 41. The screw shaft 43 is driven, through sprockets 44, 45 and a chain shaft 46 and a gear box 47, by a motor 54. An extending nozzle 57 which would tend to flex upwardly in use is held down by a screwed bracket 59 and may be mounted at either side of the machine, the hopper being reversible so that the outlet 36 may be at the same side as the nozzle 57.
Patent GB-1154462-A (GB)
Title: Medium for use in Magnetic Crack Testing Processes
Inventor: NESTLER KARL-GEORG
IPC: G01N27/84
Filed: 1966-07-13
Abstract: 1,154,462. Uses of luminescence. INGENIEURSCHULE FœR WERKSTOFFTECHNIK. 13 July, 1966, No. 31554/66. Heading C4S. [Also in Division H1] A medium for magnetic crack testing comprises ferromagnetic particles in a synthetic resin containing two or more fluorescent compounds, at least one of which, when excited, produces a primary emission, which produces a secondary emission in the 550-650 nm range in the other compound(s). Preferably the primary emission is in the U.V. range. The synthetic resin, when excited, may produce an emission which excites the first fluorescent compound. The compounds may be dissolved in the resin. The composition may be used as a powder or in a carrier liquid. In the example, the fluorescent compounds used are "Rhodamine B" and "Auramine Lake Yellow".
Patent GB-1210501-A (GB)
Title: Improvements in and relating to packaging material
Inventor: KING FREDERICK WILLIAM
IPC: B65D65/40
Filed: 1966-07-14
Abstract: 1,210,501. Laminated packaging material. MACMILLAN BLOEDEL CONTAINERS Ltd. 13 Oct., 1967 [14 July, 1966], No. 31742/66. Heading B5N. Packaging material is produced by applying plastics materials from a nozzle 7 to the inner surface of one of two webs 5, 6 of paper, cardboard, fibre-board, passing the composite between corrugating rollers 8, 9, and then applying a web 3 of similar material to the webs 5, 6 as a liner. A second liner 2 may be applied to the other side and the liners may be secured to the corrugated composite by adhesive applied at 11, 12 to the crests of the latter or by the plastics material itself, for which purpose the webs 5, 6 may have perforations. After the application of the web 3, the material is passed over a platform 15, which may be heated, and beneath a belt 13. Further heating may be applied by elements 16 to cure the plastics material. The latter may be polyurethane or polystyrene, may alternatively be applied by brushing, curtaining or spraying, and may be caused to foam.
Patent GB-721265-A (GB)
Title: Improvement in or relating to motor operated valves
Inventor: KRON HAROLD OSCAR
IPC: F16K31/05
Filed: 1952-12-15
Abstract: 721,265. Controlling change-speed gear; friction clutches. PHILADELPHIA GEAR WORKS, Inc. Dec. 15, 1952. No. 31758/52. Class 80 (2). [Also in Groups XXIX and XXXVII] A valve unit having a valve 14, Fig. 1 and stem 15, 32, 33, operated by power drive means, e.g. the switch controlled electric motor 28, has a two-speed gear mechanism 23 in the drive means comprising a primary shaft 54, Fig. 4 a primary input pinion 60, fixed on the input end and a larger primary gear 61 rotatable on the output end of this shaft, a first clutch 62 on the primary shaft for connecting the larger gear to the shaft, a countershaft 57, a larger secondary gear 69 rotatable on this shaft and meshing with the primary input pinion, a secondary pinion 68 fixed on the output end of the countershaft and meshing with the larger primary gear, a second clutch 70 on the countershaft for connecting the larger secondary gear to the shaft, interconnecting means 78-80' for engaging one clutch while disengaging the other, power means, e.g. the solenoids S', S', moving armature A', A<SP>2</SP>, connected to an arm L for operating the interconnecting means, and control transmitting means, e.g. the electrical contacts 34, T', T', T' 'governed by the travel of the valve stem, for controlling the power means whereby the interconnecting means are maintained in highspeed position during the first portion of the valve closing movement and in low-speed position for the remainder of the closing movement. The casing 17 contains limit switches stopping the motor when the valve is fully open or closed. The valve may also be actuated manually by wheel 18. The high speed solenoid S' clutches the gear 69 to the countershaft while the low speed solenoid S' clutches the gear 61 to the primary shaft. The low speed solenoid S' may be replaced by a spring for clutching the gear 61, in which case the contact rail T<SP>3</SP> is unnecessary. For a rotary valve the contact 35 rotates over circular rails T<SP>2</SP>, T<SP>3</SP>. The clutch operating power means may be controlled by a clockwork or timing device. Each clutch comprises a collar 63 or 71 respectively rotating with the shaft 54 or 57 and shiftable by the fork 72 or 74 towards the gear 61 or 69 to depress a set of cam rollers on rockers which bear on a cam ring to compress clutch leaves.
Patent GB-1044748-A (GB)
Title: Improvements in and relating to rectilinear-motion bearings
IPC: F16C29/06
Filed: 1964-08-05
Abstract: 1,044,748. Bearings. V. V. IONOV. Aug. 5, 1964, No. 31777/64. Heading F2A. In a rectilinear-motion bearing having recirculating supporting rollers 8, each adjacent pair of rollers 8 has a spacer-roller 10 therebetween, each roller 8 has stub-shafts 9 thereon, the diameters of the spacer-rollers 10 and of the stub-shafts 9 are substantially equal, and the spacer-rollers and the stub-shafts are guided in slots 7 provided in the walls of a race-way 6 of a split housing. The bearing comprises the split housing having a base 1 and end-portions 2 and an inner race member 3 having split end-portions 4 and 5, Figs. 5 and 4 (not shown), respectively. As the spacer-rollers 10 become worn they are replaced by spacer-rollers 11, Fig. 1 (not shown), which have a middle portion of a larger diameter than the diameter of the rollers 10.
Patent GB-520297-A (GB)
Title: Improvements in and relating to luminairs for use with two light sources
IPC: F21S13/00
Filed: 1938-11-03
Abstract: 520,297. Luminairs. HOLOPHANE, Ltd. (Soc. Anon. Holophane.). Nov. 3, 1938, No. 31878. [Class 75 (ii) ] Luminairs having two light souces F, F<SP>1</SP> at the foci of an ellipsoid or equivalent 1 are cut off on planes XX, X<SP>1</SP>X<SP>1</SP> as shown, the ends through which the light emerges then being formed by prism surfaces 5, 5<SP>1</SP>. The planes XX &c. pass through the foci or are outside them. A lens 3 between the foci focusses the light from F on to F<SP>1</SP> and vice versa. In a modification, Fig. 2, ellipsoid is itself replaced by a surface having internally reflecting prisms and the light emerges through the bottom. In a specific form of this, Fig. 6, the two halves of the system are hinged at 11, a spider 18 carries the sources and a reflector 16 acts as the ellipsoidal surface. In this form there is a metallic enclosure 12, 14.
Patent GB-754317-A (GB)
Title: Improvements relating to the surface finishing of tantalum and alloys thereof
IPC: C23F3/06
Filed: 1954-11-04
Abstract: In a method of chemically polishing and brightening Ta and Ta-base alloys the metal is immersed in a mixture consisting of, by volume, 1-2 parts HNO3, 4-5 parts H2SO4 and 1-2 parts HF.  Particularly useful is a mixture consisting of, by volume, 15-40 per cent, preferably 25 per cent, HNO3, 40-80 per cent, preferably 60 per cent, H2SO4, 10-35 per cent, preferably 15 per cent, HF and preferably no water although it may be added in an amount up to 20 per cent.  The strengths of the acids used are respectively, by weight, 70 per cent, 95,5 per cent and 48 per cent and the solutions are best used in the temperature range of room temperature to 90 DEG C.
Patent GB-1221177-A (GB)
Title: Transponder
IPC: H04B7/185
Filed: 1969-06-25
Abstract: 1,221,177. Radio signalling. INTERNATIONAL STANDARD ELECTRIC CORP. 25 June, 1969 [28 June, 1968], No. 32096/69. Heading H4L. In a radio repeater or transponder, the incoming signal is supplied via a filter 2 to a. three-stage tunnel diode amplifier 3 which due to the tunnel diode characteristic also acts as a limiter. The output of amplifier 3 is supplied to a mixer 4 and the output of a crystal oscillator 5 is supplied via a transistor frequency multiplier 7, a varactor frequency multiplier 8, a filter 9 and a hybrid coupler 10 to the mixer. A tunnel diode 11 amplifies and limits the output of the mixer 4 for retransmission via a travelling wave tube amplifier 13. The hybrid coupler 10 also supplies a further varactor frequency multiplier 15 providing a tracking signal which is combined with the main signal at 12. When the repeater is carried by a satellite, this tracking signal is used by the co-operating ground station to follow the motion of the satellite.
Patent GB-905109-A (GB)
Title: Improvements in and relating to regenerative heat exchangers
Inventor: GUTTER GERHARD
IPC: F02C7/105
Filed: 1958-10-09
Abstract: 905,109. Thermal regenerators. ENTWICKLUNGSBAU PIRNA VEB. Oct. 9, 1958, No. 32188/58. Class 64 (1). In a thermal regenerator having an annular drum matrix 17 extending between header members 25, 26 formed for the supply and discharge of the heat-exchanging fluids passing through the matrix, and movable with respect to the drum, the header members are longitudinally displaceable and tiltable with respect to the drum and are arranged to form flat sealing surfaces therewith. In the rotary matrix regenerator shown, the drum 17 is formed with integral axial extensions 21, 22 on which the surfaces are formed. On the ends of the header members 25, 26 are mounted graphite-coated sealing rings 31 urged by springs 32 towards the sealing surfaces on the matrix drum extensions 21, 22. These extensions contain portions which may form continuations of radial partitions provided in the matrix 17, or may consist of curved steel plates. The header members 25, 26 are resiliently mounted. They are biased axially towards the matrix by resilient mountings 27, 28, and are permitted slight radial movement by resilient mountings 29, 30. The rotor rotates on rollers 60, 61 mounted in the stationary easing 57 and is carried in a ring member 45 having teeth meshing with a drive pinion 66. Thermal expansion of the rotor is permitted by members 46 whereby the rotor is supported in the ring 45. The heat transfer material is preferably disposed in cells in the drum and may comprise tubes or alternate flat and corrugated plates of corrosion and heatresistant steel, or ceramic elements (Fig. 7) arranged in wire mesh cages, and possibly having a thin coating of a metal such as copper or silver. The use of ceramic materials for the headers and matrix casing is mentioned.
Patent GB-194358-A (GB)
Title: Improvements in or relating to conveyor-belts
IPC: D01G19/18
Filed: 1921-12-01
Abstract: 194,358. Matthews, F. C., and Crouch, A. P. Dec. 1, 1921. Combing-machines.-Conveyer-belts for use in combing-machines for wool and other materials containing grease, which has a deleterious action on leather or woven belts, are constructed of or faced with a highly-sulphurized vulcanizable composition vulcanized only sufficiently far as to produce a non-brittle composition resistant to such materials. Preferably rubber mixed as for ebonite is employed. The belt may be backed with ordinary rubber and may be reinforced with cotton &c. in one or more layers of parallel longitudinal threads wrapped around with canvas, which may be cut on the bias, the reinforcement being in the centre of the belt or in the backing. The reinforcement may consist of one or more layers of canvas out on the bias, or of layers of parallel linen, cotton, or like threads inclined in each layer to those in the next. Any of these reinforcements or leather or woven cotton may be used as a backing for the ebonite mixing with or without an intermediate rubber mixing. In another form, rubber dough is applied to duck as it is passed between rollers rotating at different speeds, the whole being covered with the ebonite mixing and partly vulcanized.
Patent GB-220538-A (GB)
Title: Improvements in and connected with pedal pads for motor vehicles
IPC: G05G1/00
Filed: 1923-12-27
Abstract: 220,538. Sinclair, J. H., (Sinclair, D.). Dec. 27, 1923. Treadle mechanism.- Pedal pads for motorvehicles, of the kind comprising a solid rubber pad C deeply corrugated on its upper face and flanged on its under face to engage a frame A having a flanged upper edge, are characterized by the provision upon the frame of prongs B which are adapted to be bent over to clamp the device to the vehicle pedal G. As shown, the pad rests upon a plate E enclosed within the frame, the plate being engaged by one set of prongs B and itself fitted with prongs F for engaging with the pedal. To afford further rest for the foot the frame may be provided on one side with an L-shaped extension. The frame may also be rounded at one end and square at the other.
Patent GB-522200-A (GB)
Title: Improvements in or relating to bearings for electric motors
IPC: H02K5/173
Filed: 1938-11-07
Abstract: 522,200. Bearings. SCOPHONY, Ltd., and WIKKENHAUSER, G. Nov. 7, 1938, Nos. 32257 and 36799. [Class 12 (i)]  The outer bearing race of a high-speed electric motor is mounted at the centre of a spider spring or springs. Fig. 1 shows an electric motor suitable for driving the scanning member of a mechanical television apparatus in which a shaft 6 carrying an asynchronous rotor 4, a synchronous rotor 5 and a scanning polygon 7 is mounted in ball bearings 9, 10. The outer thrust race 8 of the bearing 9 is fixed while the outer thrust race of the bearing 10 fits within a bearing bush 11 riveted to the centres of two spider springs 12, 13 fixed at their outer edges to a ring 14 slidably mounted in the casing 1 carrying the stators 2, 3 and pressed outwardly by a spring 16. The thrust on the bearing is adjusted by means of a ring 20 screwing into the casing 1 against the ring 14. To increase the self-aligning properties both bearings may be mounted on spring spiders.
Patent GB-661554-A (GB)
Title: High frequency pre-emphasis for pulse code modulation
IPC: H04B14/04
Filed: 1949-12-16
Abstract: 661,554. Pulse code modulation systems. STANDARD TELEPHONES & CABLES, Ltd. Dec. 16, 1949, No. 32297/49. Drawings to Specification. Class 40 (v). In a radio communication system the distortion of the high frequency signal components of low amplitude due to quantizing, for example in a pulse code modulation system, is reduced by the provision at the transmitter of a circuit for pre-emphasizing the high-frequency signal components and a de-emphasizing circuit at the receiver.
Patent GB-1067544-A (GB)
Title: Iminocycloheptatriene derivatives and a process for preparing the same
Filed: 1964-08-07
Abstract: Compounds of the formula <FORM:1067544/C2/1> wherein X is H, C1- 5-alkyl; phenyl optionally substituted by C1- 5-alkyl or C1- 5-alkoxy C2- 6-alkoxy carbonyl; cyano; nitro; halogen; amino; dimethylamino; acetylamino (and can be the same or different when n is 2 or 3); n is 1, 2 or 3; R is H, C1- 5-alkyl optionally substituted by halogen, C1- 5-alkylamino or -di-alkylamino, acylamino or hydroxyl; phenyl optionally substituted by C1- 5-alkyl, C1- 5-alkoxy, halogen, amino, substituted amino, nitro, cyano, C2- 6-alkoxy carbonyl; aralkyl optionally substituted in the phenyl moiety by C1- 5-alkyl, C1- 5-alkoxy, halogen, amino, substituted amino, nitro, cyano or C2- 6-alkoxy-carbonyl; and amino optionally substituted by C1- 5-alkyl or phenyl optionally substituted and R1 is C1- 5-alkyl are prepared by reacting a compound of the formula <FORM:1067544/C2/2> with a C1- 5-alkyl sulphate or C1- 5-alkyl ester of an active sulphonic acid.  1 - Methylamino - 7 - methylimino - 1,3,5-cycloheptatriene is prepared from 1-methoxy-7-imino-1,3,5-cycloheptatriene and methylamine.
Patent GB-153914-A (GB)
Title: Improvements in and relating to the conveyance of highly inflammable liquids
IPC: B67D7/32
Filed: 1920-11-16
Abstract: 153,914. Muchka, J. June 19, 1916, [Convention date]. Systems.-In a system in which inflammable liquid is stored in a tank T under protective gas and is withdrawn by a siphon 1<1>, 1 into a lower tapping vessel o and thence to the delivery pipe z, the siphoning action is started by an injector 4 operated by the incoming protective gas, and is stopped by the shutting-off of the gas. The pipe z is so located that the quantity of liquid normally remaining in the vessel o is sufficient to fill the limb 1 of the siphon when the injector is started. The injector 4 also draws up liquid through a pipe 6a to replenish the usual liquid seal 21, the surplus liquid flowing back into the tank. A pipe 7<1> connects the top of the vessel o to the outer chamber of the liquid seal, which communicates by a pipe 7 with the atmosphere.
Patent GB-747585-A (GB)
Title: Navigational sound-producing apparatus
Inventor: GOUGH HAROLD
IPC: G10K9/04
Filed: 1953-11-23
Abstract: 747,585. Sirens. CHANCE BROS, Ltd. Nov. 10, 1954 [Nov. 23, 1953], No. 32395/53. Class 13 A siren with a reciprocating slotted piston g is provided with a horn formed by two back-to-back saucer-shaped surfaces a, b so that the sound is projected in all horizontal directions. One nipe j supplies air for sounding and for driving the piston. Alternatively, separate pipe supplies may be used for sounding and driving in which case, the siren grunts when the driving air is cut off. The sounds may be restricted in direction by means of an adjustable shield. In Fig. 1, the piston g is driven in known manner within a slotted cylinder, d, air for the return stroke being admitted through ducts v, to the back of the piston which has twice the area of the front. In Fig. 2, separate pipes j, j1 supply air for sounding and driving. In this case, the piston g fits outside the cylinder d. When the air in j1 is cut off, the piston slows down and produces a grunt. In a modification, Fig. 4, air is supplied through pipe j1 to an air chest z to drive a piston g enclosing a cylinder d. In Fig. 5 (not shown), a siren with an air chest in the driving supply has a piston reciprocating within a cylinder as in Fig. 1.