baber/WOPTO huggingface dataset:
Patent GB-887274-A (GB)
Title: A steam boiler and turbine installation
IPC: F01K3/00
Filed: 1958-03-03
Abstract: 887,274. Steam turbine plants. SIEMENSSCHUCKERTWERKE A.G. March 3, 1958 [March 2, 1957], No. 6787/58. Class 110 (3). A steam boiler and turbine installation having an accumulator connected to receive steam from a stage of the turbine other than the highpressure stage or having an auxiliary steam supply means connected to supply steam to the first-mentioned stage comprises a control system which ensures that when there occurs a requirement to change the turbine output at a rate not greater than a critical value the steam supply to the high-pressure stage is varied, but when there occurs a requirement to change the turbine output at a rate greater than the critical value, the rate at which steam is received by the accumulator or supplied by the auxiliary means is increased or decreased, the control system being such that the critical value is varied in dependence upon the turbine load. A boiler supplies steam to a two-stage turbine T driving a generator G. An accumulator 30 receives steam from the low-pressure stage of the turbine through ducts 32, 33 or duct 31, or both. A control device 23, which receives and compares one signal which is dependent upon the actual output and another which is dependent upon the desired output, merely regulates the turbine inlet valve 14 if the difference is less than the critical value. If the difference is greater than the critical value, the control causes the accumulator to receive more or less steam from the low-pressure stage of the turbine by acting on the regulating device 29. The control device is so constructed that the critical value varies in accordance with the existing output of the turbine. The boiler is also influenced to recharge the accumulator. Instead of the accumulator, an additional steam generator may be used to supply steam to the low-pressure stage.
Patent GB-713164-A (GB)
Title: Operating key for typewriters and like office machines
IPC: B41J5/16
Filed: 1950-03-18
Abstract: 713,164. Typewriters. ORBIS BUEROMASCHINENWERKE GES. March 18, 1950 [March 23, 1949; May 11, 1949], No. 6803/50. Class 100 (4) Construction of keys.-A resiliently mounted operating key for typewriters and like office machines comprises a button 1 with a stem 2 having a relative sliding engagement with a keylever 3 to which it is held by a resilient locking member 9. The key-lever has a slot 4a to receive a spring 5 and rigidly carries a guide 6 of cruciform shape for guiding the stem 2. The upper end of the spring 5 is received in a slot 2a in the stem 2. Notches 7 in the stem 2 are engaged by the locking member 9 which limits upward movement of the stem by engaging the lower side of the guide 6. The locking member may be in the form of a spring wire or spring strip attached to the horizontal portion of the keylever 3 and extending into the notches. In a modification the stem 2 may itself form the locking member by having either outwardly or inwardly directed projections which spring to engage the guide 6 or a recess in the key-lever respectively. In a further embodiment, Fig. 9, the stem is formed from a rod 2 and has a resilient member 17 which latches under a base 19 of a slide 18 on the key-lever. The button 1 and the stem 2 may be moulded in one unit.
Patent GB-905043-A (GB)
Title: Process for modifying polymers and products obtained thereby
IPC: C08F291/00
Filed: 1959-02-27
Abstract: Cross-linked polymers are produced by contacting a polymer cross-linkable by high energy radiation with gaseous vinyl chloride monomer and then subjecting the polymer to high energy particulate irradiation in the presence of gaseous vinyl chloride monomer.  The polymer may be natural rubber, a butadiene polymer, a polymer of ethylene, propylene, butene-1, decene-1, or styrene or a copolymer of two or more 1-olefins.  The particulate irradiation may consist of a beam of electrons, protons, neutrons, deutrons, alpha or beta particles, or may be generated within the treated material by irradiation with electromagnetic radiation such as X-rays or gamma rays.  Reference has been directed by the Comptroller to Specification 863,211.
Patent GB-739462-A (GB)
Title: Improvements in or relating to paste mold attachment with auxiliary transfer tongs
IPC: C03B9/29
Filed: 1954-03-09
Abstract: 739,462. Blowing glassware. EMHART MANUFACTURING CO. March 9, 1954 [April 10, 1953], No. 6869/54. Class 56. The apparatus is generally similar to that described in Specification 697,217 but includes an additional pair of tong jaws which initially receive the parison on transfer from the neck ring of the parison mould and hold it so that it can elongate somewhat before the finishing mould halves close thereon whereby any pinching of the parison by the finishing mould is avoided. The finishing mould halves 5a, 5b and the additional tongs 16, 17 are fully open as the neck ring of the parison mould transfers the parison. The mechanical connections between the additional tongs and the mould halves 5a, 5b are such that the tongs can now fully close on to the upper portion of the parison but the finishing mould halves, at this stage, only move to the partly closed position shown. The parison mould neck ring is now withdrawn and support of the parison is then transferred from the additional tongs 16, 17 to the rotating tongs mechanism 55 during which time the parison 99 elongates as in Fig. 7. The mould halves and additional tongs are now opened fully to permit the inner surfaces of the finishing mould to be sprayed with liquid, whereupon the finishing mould halves are moved to fully closed position, taking the additional tongs with them. The parison, still supported by the rotating tongs 55, is then blown to final shape.
Patent GB-1377858-A (GB)
Title: Colour television encoder modulator
IPC: H03C1/54
Filed: 1972-02-15
Abstract: 1377858 Television; transistor gating circuits TELEMATION Inc 15 Feb 1972 [29 March 1971] 6967/72 Headings H4F and H3T  In a colour television camera to modulate an I chrominance input signal (or a Q signal) on a 3À58 MHz subcarrier, the input signal is phase split to provide two signals having equal magnitudes and opposite polarities, and these two signals are clamped in response to clamping pulses and then chopped at 3À58 MHz. To form the standard phase quadrature modulated subcarrier the resultant square wave I and Q modulator outputs are mixed and then filtered by a sine wave filter. As shown in Fig. 1, opposite polarity video signals from phase splitter 4 are fed via bootstrap emitter followers 6 and 8 to the source electrodes of chopping FETs 26 and 28 to the gates of which opposite phase 3À58 MHz square wave clock signals are applied. In addition clamping pulses are fed to the gate of a clamping FET coupled between the source electrodes of the two chopping FETs. The modulated output signal is derived from the interconnected drain electrodes of the two chopping FETs via a double cascade emitter follower 50 and a sine wave filter 52. In operation 10 ma. of forward gate current is drawn by the FET 26 and 28 which reduces the "on" source to drain resistance from the manufactured value of 150 ohms maximum to 3 ohms, i.e. they operate not in a "field effect" enhancement mode but in a saturation mode storing about 1000 picocoulombs of charge in the channel. This mode has no inherent offset voltage when the gate current is divided equally between source and drain. In addition it is desirable to rigidly control the potential difference between the source and gate electrodes of each of the FETs 26 and 28 to insure that the gate-to-source potential difference changes only with the changes that comprise the 3À58 MHz signal and does not vary with changes in the signals applied to their source electrodes. This is effected by connecting complementary PNPNPN direct coupled emitter followers between the source and gate electrodes so that when the source electrode potentials varies the potentials of the gate electrodes also varies to maintain a fixed potential difference therebetween (Fig. 2, not shown). During a clamping pulse the clamp transistor 18 is turned on causing the clamp capacitor CIO to discharge to where the positive  video and inverted video fed to the sources of transistors 26 and 28 are at equal D.C. levels. Thus the chopper 26, 28 operates between equal levels and there is no subcarrier output. For video inputs other than zero the chopper 26, 28 produces a square wave whose peak to peak amplitude is twice the input video amplitude.
Patent GB-1491961-A (GB)
Title: Balancing of gas turbine engines
IPC: F16F15/32
Filed: 1975-02-19
Abstract: 1491961 Balancing gas turbine engines GENERAL ELECTRIC CO 19 Feb 1975 [25 Feb 1974] 6997/75 Heading FIT Balancing of a gas turbine engine is effected to allow subsequent replacement of the turbine rotor 34 by a substitute rotor without performing an additional balancing operation, by balancing a compressor (16), Fig. 1, (not shown), and its shaft 38 for rotation about the engine axis, balancing the turbine rotor 34 and the substitute rotor for rotation on a reference arbor apart from the engine, connecting the balanced rotor to the shaft 38 and adding balance weights 80 thereto to connect any imbalance thereby introduced and, when replacement is necessary, removing the turbine rotor and connecting the substitute rotor, and re-mounting the balance weights 80 in their original positions. As shown, the rotor 34 includes two bladed discs 44, 46 connected for rotation together by a toothed coupling 54 and held together axially by bolts 48. The whole is coupled for rotation with compressor shaft 38 by a toothed coupling 70, and held axially together by bolts 64. The balance weights are shown as washers 80 on bolts 64.
Patent GB-163169-A (GB)
Title: Improvements in and relating to pails, buckets and the like
IPC: A47J47/19
Filed: 1920-03-08
Abstract: 163,169. Noot, R. T. March 8, 1920. No Patent granted (Sealing fee not paid). Foot-rings; handles.-A bucket, pail, &c. provided with sound-reducing material at its bottom edge, has the material c in the form of a plain ring or strip secured between the rim b of the . bucket &c. and a plain inner ring d. The material. c projects beyond the parts b, d and its flat lower edge may be provided with one or more openings .e. The bail handle is provided with a sleeve h of sound-reducing material. and is pivotally mounted on rivets or pins g on the ears of the bucket.
Patent GB-1253265-A (GB)
Title: Improvements in or relating to shoe manufacture
IPC: A43D86/00
Filed: 1969-02-10
Abstract: 1,253,265. Boots &c. BRITISH UNITED SHOE MACHINERY CO. Ltd. 10 Feb., 1969 [12 Feb., 1969], No. 7010/69. Heading A3B. [Also in Division D1] A method of moulding a sole onto a shoe upper 14 includes the steps of securing a web 10 of strands of an adhesive composition to the bottom of the lasted upper 14 and inpecting molten material into a mould cavity 33 to form the sole 26, the web 10 being heated by the molten material to activate the adhesive composition to improve the bond between the bottom of the lasted upper 14 and the sole 26. The excess adhesive composition 40 is removed from the shoe by a rotating brush or a hot knife. The adhesive web 10 may be sewn to the edge of an upper 14 before it is string lasted (Fig. 2) or may be bonded to a cementlasted upper by heating the web 10 and/or shoe bottom and pressing them together. Alternatively the web 10 may be adhered to a carrier layer, e.g. of paper, which has the same shape as the shoe bottom but is smaller so that the carrier layer just reaches the edge of the lasting margin. Suitable materials for the web are polyesters, polyamides, polyesteramides, and thermoplastic polyester glycol urethanes or polyether glycol urethanes. The sole material is preferably polyvinyl chloride.
Patent GB-160466-A (GB)
Title: Improvements in the carrying out of catalytic processes involving gaseous or vapourous carbon compounds
IPC: C10G15/00
Filed: 1921-03-03
Abstract: 160,466. Chemical Fuel Co. of America, (Assignees of Stevens, E. TV.). March 18, 1920, [Convention date]. Hydrocarbons, cracking.-Processes in which high boiling-point hydrocarbons are in contact with a catalyst on which carbon ordinarily tends to deposit, are conducted in such a manner that the catalyst is during the process subjected to high tension electric spark discharges; by such treatment the deposition of carbon is obviated, and the catalyst is maintained in an effective condition. The catalyst may itself constitute one electrode of the high tension electric discharge system; or it may be arranged as an intermediate electrode between the two electrodes connected to the terminals of the source of high potential oscillating current. Thus, in the conversion of high boiling-point hydrocarbons into simpler and lower boiling-point hydrocarbons as for example the production of gasolene from gas oil, &c., the vapours from the still 1 provided with the usual steam-injection pipe 3 which here may be used for the introduction of hydrogen or natural gas, are led, after if necessary the addition of hydrogen or natural gas through a pipe 7, through a catalyzing-tube 8 across which is placed a wirecloth diaphragm 9 of catalytic metal such as nickel, iron, or cobalt, and electrically heated by current drawn from a generator 12; on opposite sides of the diaphragm 9, and within sparking distance thereof, are placed other diaphragms 10, 11 of nickel or aluminium and which ordinarily are not heated, but are connected to an oscillator 17 excited by the generator 12. The hydrocarbon vapours are by such treatment cracked to lower boiling-point hydrocarbons, and in the presence of hydrogen are more or less hydrogenated; the vapours are passed through a condenser 22, the condensed liquid being collected in a tank 24 and the uncondensed gases which are of great heating value, escaping by a pipe 25. For the production of hydrogen, a mixture of blue or water gas mixed with steam is passed through a heated screen or diaphragm of wire gauze or perforated metal and of a catalytic metal such as nickel, iron or cobalt, placed between screens of nickel and aluminium, connected to a source of high tension oscillating current.
Patent GB-1236241-A (GB)
Title: Improvements in or relating to boxes and cartons
Inventor: GREEN DANIEL ROGER
IPC: B65D5/68
Filed: 1968-02-13
Abstract: 1,236,241. Boxes. CLARKS Ltd. 13 Feb., 1969 [13 Feb., 1968], No. 7146/68. Heading B8P. A box comprises a base 10 and a lid 11, each having side walls, the side walls of the lid in the closed box lying outside the corresponding walls of the base. Adjacent one end of the box opposite side walls of the base and lid are provided with apertures 1, 6, the aperture in each lid side wall 15 being aligned with the aperture in the associated base side wall 13. A handle 12 is attached to the box by passing the enlarged ends thereof through the apertures. The apertures are preferably of keyhole configuration. A label 20 which may be folded over the top edge of side wall 19 of the base is held on the wall 19 by a transverse slit 21 and tongues 22 in the wall 19.
Patent GB-154829-A (GB)
Title: A new or improved means for extracting bushes from, and re-bushing, bearings
IPC: B25B27/06
Filed: 1920-03-11
Abstract: 154,829. Flood, T. M., and Treadaway, H. C. March 11, 1920. Bush-extracting tools.-Means for extracting an old bush from a bearing and inserting a new one, by which the new bush is caused to force out the old one and take its place, comprises a squarethreaded screw a with an hexagonal head b flanged at b<1> at one end, a nut c flanged at c<1>, and a sleeve g having a bore slightly larger than the external diameter of the bush. The new bush d is placed on the screw a against the head b, b<1>, and the bearing e, with the old bush f is placed against it. The sleeve g is placed against the bearing e; when the nut is screwed up, the bush d forces the old bush f out into the sleeve g.
Patent GB-481234-A (GB)
Title: Improvements in or relating to cushioning materials for furniture or the like, and the manufacture thereof
IPC: A47C7/18
Filed: 1937-03-16
Abstract: 481,234. Cellular rubber. SHIMIZU, S. March 16, 1937, No. 7624. Convention date, Sept. 7, 1936. [Class 70] [Also in Groups VIII and XIV] Cellular cushioning material is made by corrugating thin rubber, sponge rubber or rubberized fibre or textile sheet, and cementing rods or bundles of rods of rubber. sponge rubber, or rubberized fibre in some or all of the corrugations. A plurality of the sheets may be assembled with the corrugations of adjacent sheets extending transversely. The corrugated sheet may be produced by passing the sheet between corrugating rollers, and vulcanizing between dies having surfaces corresponding to the corrugations so produced.
Patent GB-1304620-A (GB)
IPC: F16K17/10
Filed: 1970-02-17
Abstract: 1304620 Fluid-pressure servomotor systems ABEX CORP 17 Feb 1970 [18 April 1969] 7627/70 Heading G3P A rate-of-pressure-increase responsive pilot valve 72 is lightly biased to the closed position and has a piston with a restrictor passage 92 leading to a closed control chamber 80 of adjustable volume to vary the response of the valve. The volume is varied by adjustment of a screw 83. The pilot valve 72 opens when a sudden increase in pressure at an inlet 22 lifts a main valve 36 to force fluid above a piston 37 into a space 91 at a higher rate than it can escape through the passage 92. Opening of the pilot valve connects the space above the piston 37 with a passage 46 leading to the outlet 24. This space may also be connected with the outlet by opening of a second pilot valve 50 subjected to the pressure in passages 28, 55 connecting the space above the piston 37 to the main valve inlet 22. The second pilot valve may be omitted and the passages 28, 55 be replaced by a passage in the piston 37.
Patent GB-557918-A (GB)
Title: Improvements in or relating to cloches or cold frames for the protection of plants
IPC: A01G13/04
Filed: 1942-06-08
Abstract: 557,918. Garden frames. PARSONS, W. E. June 8, 1942, No. 7753. [Class 20 (i)] A clip for sheets of glass forming a cloche comprises a strip of springy metal bent at its centre to form a triangle with base b to lie between the upper edges of the inclined sheets f, with the sides of the triangle lying along the faces of the sheets, the free ends c bent downwardly parallel to the sides of the triangle to lie along the outer faces of the sheets. The open ends at the vertex d are tied by a tie e which may be extended, to form a handle, and the free ends of the bands may be extended and bent over to form hooks.
Patent GB-124623-A (GB)
Title: Improvements in Piston Rod Packings & the like.
Inventor: DEAM JOHN
IPC: F16J15/28
Filed: 1918-05-09
Abstract: 124,623. Deam, J. May 9, 1918. Packing, metallic; packing, removable casings, containers, or carriers for; followers.-Packing for the piston-rods of engines and pumps consists of segmental rings 1 arranged in two groups, the exterior surface of each group being conical. The cones may be arranged with their apexes adjacent, or with their bases adjacent as shown. The rings are compressed by resilient packing 9, which may consist of several turns of packing, or may be moulded to shape. The apex ring 10 of each cone is non-contractile, and may be in two parts or solid. Follower rings such as the ring 13 may surround the rings 10. In order to accommodate lateral movement, the packing may be enclosed in a casing 12a which is formed with a rounded end 15, the meeting surfaces of the ring 13 and gland 8 also being rounded.
Patent GB-261606-A (GB)
Title: Machine for making paper lath
IPC: D21J1/16
Filed: 1926-03-20
Abstract: 261,606. White, A. P. March 20, 1926. Reinforced paper. - A machine for making paper lathing reinforced by rods or wires comprises a series of crimping devices C, Fig. 1, in which one sheet of paper is grooved to receive wires W from a straightener S, a bottom sheet being applied at consolidating rolls F, F' after passing over a pasting roller E, and the compound sheet then rolled by grooved rollers 20 on a table T. The lathing is drawn through by rollers M, M<1> which have a peripheral speed slightly greater than that of the rollers 20. A heater H may be placed between the rollers F, M and may contain the rollers 20. The paper from reels A, B is guided by rollers D which are adjustable horizontally and vertically. Each crimping device consists of a grooved former 9, Fig. 4, and adjustable formers 11, all three tapering longitudinally towards the exit end as shown in plan in Fig. 2.
Patent GB-166631-A (GB)
Title: Improvements in scutching machines for flax and other fibrous materials
IPC: D01B1/28
Filed: 1920-03-16
Abstract: 166,631. Fibre Corporation, Ltd., and Michot, G. March 16, 1920. Scutching . apparatus; grip-chain and like arrangements for feeding, holding, and conveying fibrous material.-In a machine for scutching flax of the type in which the material is held between conveying- bands and moved past scutching - blades, the scutching-heads being at a lower level than the points of feeding and withdrawal, the bands 7, 8, Fig. 1, are arranged round carrier pulleys 5, near the scutchers 4, guide-pulleys 6, and jockey pulleys 9, 10, one for each band, carried by weighted levers 16. The pulleys are mounted on a frame S which can be adjusted laterally towards and away from the scutching-blades. The carrier pulleys are provided with teeth 21 arranged approximately parallel with the carrier band as it leaves the pulley in order to minimize the interference with the fibres on the withdrawal side of the pulley. One of the carrier pulleys 5 is driven continuously from one of the scutching-shafts through variable friction gears 22. 23 and worm reducing gear, or through cone pulleys and an epicyclic reducing- gear. The scutching-blades are enclosed in a casing 33, and the loose material is drawn away by an exhaust fan, the ducts being preferably below the floor. A plate 15 between the carrier pulleys 5 prevents interference between the descending and the ascending material. Specification 108,716 is referred to.
Patent GB-464229-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B17/04
Filed: 1936-03-16
Abstract: 464,229. Refrigerating. STEENSEN, S. J. March 16, 1936, No. 7865. Convention date, April 1, 1935. [Class 29] Absorption machines. -In a refrigerating- apparatus having two or more generatorabsorbers 40 connected to a common condenser and evaporator and with non-return valves 12 and 13 in the inlet and outlet of each generator-absorber, the valve body 29 and seal 30 of each non-return valve are immersed in a liquid 36 through which the vapours of the cooling agent must pass. Owing to the non-return valves, whenever the pressure in a generator absorber rises due to heating, vapour is dis charged to the condenser through valve 12 and when the pressure falls due to cooling vapour is withdrawn from the evaporator to the absorber through valve 13. Refrigerant is admitted to the evaporator through a float valve and leaves through a thermally regulated valve which maintains the temperature of the evaporator constant. Each generatorabsorber contains a heating element 16 connected to a flexible bellows 19 containing a volatile liquid, and is normally cooled by an air current passing up through a sleeve 25 around the apparatus. Whenever the element 16 is switched on, however, the diaphragm 19 expands and, through a lever system 22 closes the top end of the sleeve 25 with a cover 41. A still air heat-insulating jacket is thus formed around the generator.