baber/WOPTO huggingface dataset:
Patent GB-275260-A (GB)
Title: Improvements in pulse or other frequency meters
IPC: G01R23/02
Filed: 1927-07-29
Abstract: 275,260. Goldschmidt, R. July 29, 1926, [Convention date]. Addition to 245,793. Electric marking-action. -In apparatus for measuring pulse beats and other low-frequency vibrations as disclosed in the parent Specification in which a series of damped pendulums are caused to oscillate electromagnetically by the pulse or other vibrator the resonant pendulum being distinguished by oscillating most violently, the electromagnetic field in which the pendulums oscilla,te is so modified that those pendulums above resonant frequency are brought substantially to rest, the resonant and adjacent violently oscillating pendulums being caused to make records on a travelling paper web. As shown in Fig. 7, twenty-four pendulums G are arranged circularly adjacent to an electromagnet S, the pole shoes L, Q of which are respectively spiral and of star shaped circumference (Figs. 2 and 3). The coil S is excited from a source E in a circuit 51 closed intermittently by the pulse and containing a rheostat 14. The asymmetric magnetic. field produced is such that the pendulums of highest frequency are in the strongest fields. Opposite each pendulum G is suspended a U- shaped lever 10 at a distance variable by a screw 12. Each lever 10 is connected by a wire 15 with a leaf spring 16 carrying at its end a fluted disc 17. The discs 17 bear against a paper web 24 passing around rollers 18, 19. The paper web 24 is impregnated with an indicator such as litmus, phenbl phthalein or alizarine, and passes through a tank 28 containing brine. Alternatively the tank 28 may contain the indicator. Paperguiding rollers 26, 27 and the paper roll 29 are supported in a frame 30 inserted into the tank 28, and held by pins 31 engaging slots 32. The web 24 is fed forward uniformly by clockwork or an electric motor 22 driving the roller 18 through gearing 23. Of the pendulums G the most violently oscillating make contact with the levers 1.) and thereby make or interrupt an electric circuit through the members 15 - - 18, whereby electrolytically-formed lines an the web 24 are made or interrupted, the highest frequency indicated at any moment being that of the pulse. The lines may alternatively be recorded on the web by means of ink or by burning. In order to insert the paper web 24, the pressure of the spring 16 on the rollers 18, 19 may be relieved by an eccentric 21 rotated by a crank 20.
Patent GB-469516-A (GB)
Title: Improvements in or relating to apparatus for opening and closing windows, ventilators or the like
IPC: E05F11/10
Filed: 1936-07-21
Abstract: 469,516. Locking levers. LUXFER, Ltd., and BATES, E. L. July 21, 1936, No. 20225. [Class 80 (iii)] [Also in Group X] A holding device for a hand - actuated sliding window or like regulator comprises a segmental spring 12 frictionally engaging an annular boss 13 in the casing and adapted to be freed by extensions 15 of semicircular discs 14 driven by squared recesses fitting the handle spindle. The window connection comprises a link 4 driven by a stud 6 on a disc 7 having a squared driving opening allowing a lost movement on the handle spindle. The window is secured in the closed position by rotating the handle so that the stud 6 is thrown over the dead centre, a' stop 19 engaging a projection 15 on the handle. The window regulating link preferably comprises telescopic parts connected by pin and slot and a compression spring to allow the movement past the dead centre. The handle engaging surfaces of the discs are rounded.
Patent GB-760530-A (GB)
Title: Method and apparatus for the continuous production of reinforced plastic articles
IPC: B29C53/24
Filed: 1954-07-12
Abstract: 760,530. Moulding reinforced plastic sheets. LIBBEY-OWENS-FORD GLASS CO. July 12, 1954 [July 27, 1953], No. 20263/54. Class 87(2). [Also in Group VIII] Sheets or sheeting of fibre-reinforced plastic are made by feeding a liquid thermosetting resin onto a flexible moving film, then depositing short lengths of fibres on to the resin, embedding them therein, covering with another flexible film, partially curing, moulding-as by corrugating-and finally curing. The flexible films, which may be of regenerated cellulose or cellulose acetate, may be removed from the final sheet. The resin may be a polyester, phenol-or ureaformaldehyde, or mixtures of polyesters with partially polymerized acrylic resins or with partially polymerized styrenes, with a catalyst if desired, and the fibres may be of chopped glass strand or cellulose, nylon, or rayon. The resin is fed from a hopper 27, Fig. 2, on to a flexible film 22 carried by a conveyor 19 ; glass yarn 31 cut into short lengths 18 by cutting apparatus 30 falls through hood 37 on to the resin, spiral rollers 38, 39, threaded in opposite senses, then press the fibres into the resin and a sheet 41 is applied to the top of the reinforced resin by rollers 42, 43. Excess air is removed by the pressure of a curved metal strip 46 to give a cross-section as shown in Fig. 6 to the resin sandwich. A thin mat of glass fibres may be enclosed by the surface films to sandwich the reinforced resin core. The resin is then partly cured by heating means 47, e.g. resistance or infra-red heating, or alternatively by ultraviolet radiation. The sheet is placed between moulding members, which may be corrugated, while still flexible and finally removed to a curing chamber after which the films may be removed.
Patent GB-150169-A (GB)
Title: Improvements in or relating to gaiters
IPC: A41D17/02
Filed: 1919-08-18
Abstract: 150,169. Bailey ,J. H. Aug. 18, 1919. Leggings.-An underlegging to be worn under the trousers or other clothing consists of two conneoted pieces of cloth shaped to fit the calf and preferably waterproof. The fastening-means comprise a strap D and buckle F at the top, and a tape H secured obliquely near the upper end of one edge and adapted to be wound round the outside and tucked in at the bottom.
Patent GB-1293605-A (GB)
Title: Improvements relating to display apparatus suitable for use as a teaching aid
Inventor: WAKEFIELD AUDREY
IPC: G09B15/02
Filed: 1969-04-22
Abstract: 1293605 Teaching numbers A WAKEFIELD 13 April 1970 [22 April 1969] 20369/69 Heading G5G A display device for use as a teaching aid comprises a panel 5 provided with slidable shutters 7 each associated with an aperture 6 in the panel each shutter having a number marked thereon and being provided with a projecting finger piece 8 which serves also as a stop by abutment with opposed edges of the associated aperture.
Patent GB-532313-A (GB)
Title: Improvements in means for supporting and spacing shuttering or panels particularly for use in the construction of walls by casting in situ
IPC: E04B2/86
Filed: 1939-07-13
Abstract: 532,313. Wall centering. DUNCAN, W. July 13, 1939, No. 20441. [Class 20 (ii)] A spacer for shuttering, is formed of a rigid strip of metal having co-planer side strips 1 and an intermediate ridge 3 which is cut away at the ends 2 and the centre 5 to provide apertures respectively to receive the edges of the shutter and to allow the poured concrete to pass easily. The protruding ends of the spacers are wrenched off after the wall is set. Reference has been directed by the Comptroller to Specification 210,806, [Class 20 (ii)].
Patent GB-934900-A (GB)
Title: Method of bonding metals
IPC: C09J7/30
Filed: 1961-06-06
Abstract: A method of bonding metals, using fabrics and metal adhesives which harden by polymerization in the presence of peroxidic polymerization catalysts and accelerators is characterized in that the said metal adhesive and fibres, fabrics or mats which have been pretreated either with a compound containing a labile chlorine atom, or with an N-dialkylolamine containing at least one aromatic radical, or with a tertiary aromatic amine having a boiling point higher than \sB230 DEG C. are used for the bonding operation.  The pretreated fibres, fabrics or mats are impregnated with the metal adhesive and in addition the metal parts may be coated with the adhesive.  In an example a glass fibre fabric is impregnated with a solution of 2,5 g. of diisopropylol-p-toluidine in 120 ml. of methanol and dried.  After being kept for 30 days the fabric is impregnated with an adhesive containing monomeric methyl methacrylate, polystyrene, "Neoprene-WRT" (Registered Trade Mark) and acrylic acid. 3% of a hardener paste comprising 50% benzoyl peroxide in dibutylphthalate is added to the mixture.  The impregnated fabric is placed between overlapping sand blasted surfaces of a pair of steel plates.  No pressure is required to effect the bond.  In another example a glass rayon mat is treated with a solution containing phenylethyldibutylamine hydrochloride, bis-tolylsulphomethylamine, and a copper solution in methyl methacrylate.  The glass mat is stored for 100 days at room temperature.  The adhesive used in this example contains polyvinylmethylether, unsaturated polyester resin, monomeric vinyl toluene, monomeric methyl methacrylate, paraffin T, hydroquinone, highly dispersed silica, benzoyl peroxide paste (50% in dibutylphthalate) or tert-butyl-perbenzoate (50% in phthalate plasticizer) and bis-tolylsulphone methyl-amine (50% in phthalate plasticizer).  In a further example a glass rayon mat is treated with a solution of triethylamine oxide hydrochloride in methanol. The mat is kept for 100 days at room temperature and the adhesive used in the first example is applied to the parts to effect the bond. Specifications 768,902, 784,991, 786,843, 830,835, 837,109 and 927,060 are referred to.
Patent GB-763436-A (GB)
Title: Structural materials having one or more cellular or embossed courses or layers
IPC: F41H5/02
Filed: 1952-08-14
Abstract: A plastic material, e.g. a polyamide, is cast or moulded around removable or permanent cores to form an article in which the polyamide is spatially distributed so as to define contiguous dome-shaped cells arranged so as to avoid straight rows of contiguous cells and so that any cross-section reveals a course or courses made up wholly or mainly of domes.  The cores may be spherical, of shingle, quartz, hard basalt, silicon, carbide corundum, hard glass, porcelain or steatite.
Patent GB-1208845-A (GB)
Title: Damped vehicle-height adjusting valve
Inventor: KURICHH SHAM L
IPC: B60G17/052
Filed: 1969-04-22
Abstract: 1,208,845. Adjusting vehicle height. BENDIX - WESTINGHOUSE AUTOMOTIVE AIR BRAKE CO. 22 April, 1969, No. 20535/69. Heading B7D. In a vehicle height adjusting valve comprising a shaft 26 rotatably mounted in a casing 10 adapted to be mounted on the sprung or unsprung mass of a vehicle to operate supply and exhaust valves 50, 52 controlling the flow of air to and from an air spring 24 and being rotated by a lever 82 having a resilient overtravel connection to the shaft and moving in response to the variations in distance between the sprung and unsprung masses, the rotation of the shaft is damped by means of an arm 120 depending from the shaft 26 into a chamber 126 formed in a housing 124 depending from casing 10 and having a pair of opposed aligned liquidfilled damping cylinders formed by a cavity 128 at the lower end of the housing. Pistons 130, 132 are spring-urged towards each other in said cylinder but are separated by a stop 136 and can be independently urged away from said stop by an end part 140 of the arm 120 according to the rotation of shaft 26. The opposite sides of each piston are interconnected by restricted flow passages and non-restricted passages 152, each of the latter incorporating a one-way check valve 154 which closes as the piston moves away from the stop and opens as the piston moves towards the stop. The restricted flow passages may be the clearance between each piston and its respective cylinder or an open restricted bore through the piston. The air flow between the valve and spring 24 may be arranged by having the spring 24 in constant communication with the interior of the casing 10 via an opening 22, said valves 50, 52 connecting the interior of the casing either to an air reservoir 78 or to exhaust via an outlet 60.
Patent GB-421660-A (GB)
Title: Improvements in or relating to buoys
IPC: B63B22/20
Filed: 1933-07-21
Abstract: 421,660. Buoys. CAREY, W. L. DE M., 11, Byng Street, Millwall, London. July 21, 1933, No. 20561. [Class 68 (i)] A buoy is provided with a central slot in which a trunnion b is fitted to receive an anchoring bar d, rubbing blocks g being arranged on each side of bar d. Below partitions h is provided a solid counterweight of sand, metal &c., and a water counterweight may be provided below partitions j. The buoy may be of circular section, with or without a longitudinal fin, or of elliptical or ovate section. Fenders m, a ladder l, and a cover of matting, rubber, &c., with rope handles are provided. V-frames connected by a crossbar may be mounted on top of the buoy with ropes or bars swinging on the crossbar. The normal waterline is at or below the centre of the buoy. In a modification, the central trunnion is replaced by two trunnions, one at each end of the buoy, independent anchoring chains being attached to the trunnions.
Patent GB-656025-A (GB)
Title: Desk telephone switch
IPC: H04M1/02
Filed: 1948-08-04
Abstract: 656,025. Rotary step-by-step switches. AUTOMATIC ELECTRIC LABORATORIES, Inc. Aug. 4, 1948, No. 20593. Convention date, Sept. 10, 1947. [Class 38(v)] [Also in Group XXXIX] An intercommunication desk telephone has mounted in its base a switch comprising a plurality of lamp jacks and pairs of contact springs mounted on a rectangular frame in semi-circular configuration around a shaft rotatably mounted in opposite ends of the frame, a pointer mounted on one end of the shaft for manually rotating the shaft to point to any of the lamp jacks, and means controlled by the shaft for operating the pair of contact springs corresponding to the lamp jack selected. As shown in Fig. 1 the pointer 24 and the signal windows 25 covering the lamp jacks are mounted below the normal dial of the telephone set. Fig. 3 which is a bottom view of the switch shows how the switch shaft 29 operates the spring contacts 31 by means of spring bushings 32 bearing on the surface of the shaft. The contact pairs 31 remain open as long as the bushings 32 bear upon the curved surface of the shaft, but flat surfaces 33 are machined on the shaft such that a different one of the bushings 32 will bear against a flat surface 33 when the shaft is in each of its five positions. The contact pair corresponding to that bushing will then be closed, Fig. 7. The shaft 29 is rotatably mounted in the frame 36 and the angle it turns for each position is determined by the ball bearing 46, Fig. 12, spring-urged against grooved portions 34 at the end of the shaft. The lamp jacks (30), insulating members (38), and lamp shields (48) which prevent light emanating from a lamp from shining through an adjacent signal window are assembled on the frame 36. The triangular groove 43, Fig. 3, cut in the end of the shaft opposite to that having the grooves 34 receives the set screw retaining the pointer 24. The contact pair operated by the telephone user effects the switching required.
Patent GB-517069-A (GB)
Title: Improvements in or relating to automatic regulators for controlling fluid pressure, temperature or other physical conditions
IPC: G05B6/05
Filed: 1938-07-12
Abstract: 517,069. Fluid-pressure servomotor-control systems. WOOD, J. E. July 12, 1938, No. 20615. [Class 135] Means for maintaining a controlled condition. such as pressure, temperature, flow, or level, at a predetermined value comprises a diaphragm or the like movable in response to deviations in the controlled condition, a motor for regulating the condition, and a valve-mechanism for controlling the motor, which comprises two interacting components, one coupled to the diaphragm and the other to a floating lever, which is coupled to the piston of the motor and also to a second diaphragm, the fluid supply to which is regulated by the first diaphragm. A regulator, such as a damper 10, for the controlled condition is adjusted by a motor M, to which fluid pressure is admitted by a piston valve 3 operated by deviations in the pressure acting on a spring-controlled diaphragm 1. Pressure is thereby admitted from a supply 5 to one or the other side of the piston 8 of the motor. The piston 8 acts through a lever 11 on a ported sleeve 13 surrounding the valve 3, the sleeve being moved in the same direction as the valve, so as to cut off the pressure. An additional displacement is imparted to the piston 8 by the admission of fluid from a supply 15 through ports 16 in the valve 3 to a pipe 23 leading to a second diaphragm 17. The movement of this shifts the lever 11 about the point 20 as a pivot, so as to move the sleeve in the opposite direction and re-admit pressure to the motor. The ports 16 are in overlapping arrangement, so that they open to an increasing degree with increased movement of the valve, and effect the additional displacement at a rate depending on the measured deviation. The motor M may be single-acting and spring-controlled, and the supply of fluid pressure to the second diaphragm may be controlled by an extension of the sleeve 13 instead of by an extension of the valve. In another form, the sleeve is omitted, and the two valve components are operated by separate diaphragms, the stressing of the spring controlling one of which is varied by a cam-member secured to the piston of the motor.
Patent GB-884921-A (GB)
Title: Frequency-stabilized oscillation generator system
IPC: H03L7/20
Filed: 1958-06-27
Abstract: 884,921. Automatic frequency control systems. RADIO A.I.R. APPLICATIONS INDUSTRIELLES RADIO-ELECTRIQUES. June 27, 1958 [July 2, 1957], No. 20650/58. Class 40(5). In a generator of radio frequency oscillations having an oscillator 10, Fig. 1, stabilized by a reference oscillator 12 and including a multiplier 17 in its output lead, a second frequency multiplier, interposed between the oscilaltor 10 and a mixer 13 fed with a selected harmonic of the reference oscillator for control purposes is arranged to introduce the same multiplication factor. Control 19 which adjusts the multiplication factors controls also a mechanical divider unit 21 to introduce a transmission ratio equal to the reciprocal of the multiplying factor whereby the frequency change per unit of dial movement is retained constant. A wide band oscillator which may be used as a beat frequency oscillator for radio reception includes a 2-4 megacycle "hundreds" oscillator 65, Fig. 5, a 300- 399 kc./s. "tens" oscillator 30, a 105-95 kc./s. "units" crystal oscillator 37 and a 100 kc./s. reference oscillator 66, 34 The oscillator 30 which includes a frequency multiplier 52, Fig. 3, in its output applies through an identical multiplier 31, a mixer 32 wherein the multiplied output (311 kc./s.) is modulated with a harmonic of 10 kc./s. (390 kc./s.) selected by a unit 33<SP>11</SP> responsive to multiplier control 51, and the mixer output (79 kc./s.) after amplification in a narrow band amplifier 35 is again modulated in unit 36 with one of the ten crystal outputs (104 kc./s.) from oscillator 37 to produce a 25 kc./s. signal. This signal is compared with regard to phase with a 25 kc./s. signal, obtained by dividing the output of oscillator 34 by 4 in divider 40<SP>1-111</SP>, in a comparator 39<SP>11</SP> and a signal proportional to the difference is applied to a reactance circuit 39<SP>11</SP> to stabilize the output frequency. The 10 kc./s. base for the harmonic generator is obtained by divider 40<SP>1-111</SP>, and tens and units tuning controls 47, 40 are applied to tune oscillator 30 through a differential gear 43, a reduction gearing 45 being inserted in the "units" feed to gear wheel 43. The "hundreds" circuit of oscillator 65 is similarly stabilized by reactance 73 responsive to phase comparator 71, 72, the circuit including a mixer 63, harmonic producing circuits 67, 68, narrow band amplifier 62, and a second modulator 61 corresponding to modulator 36 in the "tens" control loop which is fed with the stabilized output from oscillator 30 to produce a 100 kc./s. output for comparison in the phase comparator with the 100 kc./s. output from oscillator 66. A differential gear 82 is provided to couple the "tens" and "units" tuning to oscillator 66, and a set of binary multipliers 74-77 is included in the output.
Patent GB-963188-A (GB)
Title: Improvements in liquid measuring and sampling devices
IPC: G01N1/10
Filed: 1963-05-24
Abstract: 963,188. Sampling liquids. P. A. GARDNER. May 24, 1963 [May 25, 1962], No. 20780/63. Heading B8N. Apparatus for measuring and sampling liquids, such as milk, comprises a vessel 10 having a liquid inlet 14, a vacuum outlet 16 and a liquid outlet 28, a transparent measuring tube 18 connected with the vacuum outlet, and a sampling tap having a body 23 in which are provided a first duct 24 connected with the liquid outlet, a second duct 25 connected with the measuring tube, a third duct 26 connectable with a sample bottle 33, a fourth duct 27 open to atmosphere and a fifth duct 28 connectable with a source of vacuum, a valve plug 29 being provided in the valve body having a bore 30, 31 communicating, at one end, with the duct 28 and, at its other end, upon rotation, with any one of ducts 24 to 27, the plug also having a groove 32 which upon rotation connects any two adjacent ducts. In operation, when the inlet 14 is connected to a source of liquid and the duct 28 with a source of vacuum, the valve plug is rotated so that in a first position the bore 30 communicates with the duct 25 in order to draw liquid into the container, a second position wherein air is drawn via a duct 27 into the vessel to effect stirring of the incoming liquid, a third position wherein the port 30 is disconnected from the duct 25, a fourth " off " position, a fifth position in which the groove 32 connects the duct 24 with the duct 25 in order to fill the measuring tube to the level of the liquid in the vessel, the level being indicated in a scale 20A, a sixth position wherein the sample in the tube is dispersed into the bottle 33, and a seventh position wherein the duct 30 aligns with the outlet duct 24 so that the contents of the vessel is drained via the duct 28.
Patent GB-460217-A (GB)
Title: Improvements in or relating to means for aerating cream, cake mixtures and the like
IPC: A47J43/12
Filed: 1935-07-23
Abstract: 460,217. Aerating liquids. CHRISTIANSEN, E., and ERICSSON, C. O. July 23, 1935, No. 20850. [Class 14 (i)] In an apparatus for aerating cream, cake mixtures, and the like, comprising a receiver 1, a chamber 2 for air under pressure, and an air-distributing device, the latter consists of a ring or grating 4 supported by a shoulder 3 of the receiver 1, a member 6 of wire gauze resting on the grating, and a metal plate 9 resting on the gauze and provided with very fine slits 10, which may be arranged as shown in Fig. 3. Preferably, the member 6 comprises several layers of gauze of fine mesh, for example, two layers of 60 mesh between two layers of 100 mesh. The slits 10 are formed by milling out grooves 11 in the plate 9 and then milling the slits in from the grooves. The backing of the slits by the gauze prevents escape of liquid through the air-distributing device. The gauze sheets are mounted in a ring 7 which fits in recesses in the ring 4 and plate 9, the distributing assembly being held together, and removably in the receiver 1, by a stud 12. A whisk as described in Specification 327,465, [Class 86], may be provided, and compressed air may be supplied by a pump arranged as described in Specification 460,273.