baber/WOPTO huggingface dataset:
Patent GB-1489727-A (GB)
Title: Control apparatus for gas burning appliance
IPC: F23N1/02
Filed: 1976-02-23
Abstract: 1489727 Burner control systems POTTERTON INTERNATIONAL Ltd 23 Feb 1976 07032/76 Addition to 1425646 Heading F4T A control apparatus for a fanned, gasburning appliance comprises valves 14, 15 controlling the flow of gas to main and pilot burners 3, 9, electrical ignition means 10 for the pilot burner, a sensor 11 arranged to detect a flame at the pilot burner and to control a changeover switch S<SP>1</SP> 4  having a normally-closed pair of contacts and a third contact S<SP>1</SP> 4 , and a sensor 17 arranged to detect an air flow from an electrically driven fan 7 and to control a switch S 3  having a normally-closed pair of contacts and a third contact 28 which is connected to the common contact of the switch S 4  via a third switch 23B, the switch S 4  being connected so that on supply of current to the normally closed contacts the valve 15 is opened and on supply to the normally open contact S<SP>1</SP> 4  the valve 14 is opened. The switch 23B forms part of a relay 23. When programmer 20 is ON and a demand for heat from boiler thermostat 22 closes switch 21 the relay 23 is actuated via the switch S 3  and the fan 7 is supplied with current via contacts 23C. When an air flow is detected by the sensor 17 the switch S 3  is changed (the relay remaining latched via contacts 23A) and the valve 15 is actuated via the contact 28, the contacts 23B and the switch S 4 , as is spark generator 25 of the ignition means 10, so that the pilot burner is lit. When a flame is detected by the sensor 11 the switch S 4  is charged (enough current flowing through resistor R 1  to maintain the valve 15 open), and the main gas valve 14 is opened.
Patent GB-1034625-A (GB)
Title: Improvements in or relating to hydraulic brakes for tractor-trailer vehicles
IPC: B60T11/10
Filed: 1965-02-18
Abstract: 1,034,625. Hydraulic brakes; dashpots. H. TEVES, E. A. TEVES and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN UND ARMATURENFABRIK KOMM GES]. Feb. 18, 1965 [April 4, 1964], No. 7033/65. Headings F2E, F2F and F2S. In an hydraulic over-run brake for tractor-trailer vehicles comprising trailer wheel brake cylinders operated by a master cylinder 1 which is disposed in a drawbar connection, the master cylinder comprises a piston rod 7 which extends through an adjoining damping cylinder through a porous partition 4 (e.g. of sintered metal) through which gaseous and liquid pressure medium can pass over a relatively long time. Air and vapour bubbles forming in the damping chamber 6 pass through the porous partition 4 into the chamber 5 and can escape to the reservoir when the brake is released and the tipping valve 13 is held open by the piston member of the master cylinder formed by a sliding member 11 mounted on the plunger end 8 of the piston rod 7 in association with a spring 10 and a spring cup 9. When the piston rod 7 moves as a result of the trailer overrunning the tractor vehicle the porous partition 4 is substantially impermeable, since the pressure medium needs a much longer time to pass through the porous partition than is needed to apply the brake. Pressure increase in the chamber 6 caused by a rise in temperature of the damping medium or by the slow cessation of damping are reduced by the damping medium being able to pass from the chamber 6 through the partition 4 to the chamber 5. A negative pressure in the chamber 6 can be gradually equalised by this means.
Patent GB-437008-A (GB)
Title: Improvements in the treatment of chrome-iron ores
IPC: C21C7/00
Filed: 1935-03-06
Abstract: Chrome iron ore is melted in the presence of a reducing agent, and an added base, under such conditions as to form an underlying molten layer of metal high in iron and low in chromium, with an overlying molten layer of ore containing the greater part of the chromic oxide of the original ore, the molten metal being then separated from the ore melt.  In an example, 100 lbs. of ore is mixed with 164 lbs. of lime and 50 lbs. of coke, all of which are ground to pass a 1 1/2 inch mesh screen, and the mixture is charged into an electric furnace of the three phase submerged arc type and heated to about 1600 DEG C.  At time intervals of about an hour, a metal containing 3,8 per cent chromium, 0,54 per cent carbon and 95,66 per cent iron, and an ore melt containing 43 per cent Cr2O3, 17,2 per cent CaO, and 10,4 per cent silica are tapped off into separate receptacles.  Iron oxide present in the original ore as ferrous chromite is replaced by lime, forming calcium chromite.  The concentrated ore, when reduced by ferrosilicon, yields ferrochromium containing 71 per cent chromium and with a carbon content of 0,04 per cent.  The ferrosilicon employed for this reduction may be obtained by reduction of the iron chromium alloy of low chromium content from the underlying layer. The percentage of chromium in the ferrochromium obtained varies from 70 to 99, and is dependent upon the ferrosilicon content of the reducing agent.  The reduced iron may be removed as a phosphide or sulphide by the addition of a phosphate or a sulphur compound to the furnace charge, for example phosphate rock on iron pyrites.  Metallic chromium may be obtained by reducing the ore melt with silicon.  The amount of reducing agent added is preferably sufficient to reduce to metal all the iron in the ore, but only about 3 to 10 per cent of the chromium.  In a modification, the chrome ore concentrate may be made by first producing high carbon ferrochromium from the natural ore, and then oxidizing the ferrochromium with iron ore in the presence of a lime-silica slag bath, the products being a basic ore melt high in chromium, and a metallic layer of a low carbon iron alloy low in chromium.
Patent GB-1203011-A (GB)
Title: Improvements in or relating to axial flow fans
IPC: B63J2/02
Filed: 1969-02-10
Abstract: 1,203,011. Combined turbines and fans. FERDINAND SPITZNAS MASCHINENFABRIK G.m.b.H. Feb.10, 1969 [Feb.8, 1968], No.7060/69. Heading FIT. An axial-flow fan for aerating oil tanks, ship's holds, pump rooms &c., has turbine blades 6 disposed at the periphery of the fan blades 4 and driven by one or more jets 8, (9), Fig. 2 (not shown) in each of whose supply duct or ducts are disposed a blow-off valve 10 and a pressure reducer 11. There may be two jets 8, (9) disposed generally tangentially of the turbine and diametrically opposite, jet 8 being selectively supplied with compressed air whilst the other jet (9) is selectively supplied with steam. Air exhausting from the turbine blades 6 mixes with the air-stream impelled by the fan blades 4 but exhaust steam is not so mixed. Each blow-off valve 10 is set to open at a pressure slightly higher than the pressure setting of its associated reducer 11. A surrounding casing 1 is made of non-ferrous metal so that no sparks can occur when the casing is applied to a tank aperture. The casing has a strainer 2.
Patent GB-568131-A (GB)
Title: Improvements in and relating to apparatus for starting electric discharge devices
IPC: H05B41/06
Filed: 1943-05-05
Abstract: 568,131. Control systems for spacedischarge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. May 5; 1943, No. 7073. Convention date, May 7, 1942. [Class 38 (iv)] In a starting switch for connection in the filament preheating circuit of a discharge tube, comprising thermostaticallycontrolled main contacts which, after closing the preheating circuit under the influence of a high-resistance heater arranged' in series with the filaments, open to provide a voltage surge which initiates the discharge, opening of the contacts is effected by a low-resistance heater acting on the thermostat of one of them and carrying the preheating current, opening occurring at a time when the other main contact and an intermediate contact are closed to short-circuit the high-resistance heater which is connected between them. As described, a bimetal strip 22 with low-resistance heater 28 lies with its end in contact with the free end of a strip 24 of bimetal for compensation of ambient temperature, a further bimetal strip 21 making contact at its free end with the same end of strip 24, when bowed by passage of current through a high-resistance heater 27 in shunt with the strips 21 and 24. Thus, on switching on the discharge lamp 10, current flows through heater 27, strip 24, strip 22 and its series heater 28, until, on bowing of strip 21, the heater 27 is short-circuited and the increased current through heater 28 causes strip 22 to move away from strip 24 to give the necessary voltage kick to start the lamp. The heaters 27, 28 lie in bends in the strips 21, 22, as shown in Fig. 3. A device at X, Fig. 1, comprises a bimetal strip 41 with its free end shaped as a latch to hold a spring arm 42 in contact at normal temperatures. If the lamp fails to start, repeated cycles of operation by the main thermal switch causes an accumulation of heat in a series heater 51 which ultimately releases the arm 42 which is biassed to spring clear and break the starting circuit until reset by hand after cooling.
Patent GB-913093-A (GB)
Title: Grinding machine
IPC: B24B41/06
Filed: 1961-02-27
Abstract: 913,093. Bearings. HEALD MACHINE CO. Feb. 27, 1961 [Feb. 29, 1960], No. 7128/61. Class 12 (1). [Also in Groups XXII and XXIII] The outer race 13 of a ball-bearing mounted in a grinding machine (Group XXIII) is supported against axial movement. The inner race 12 is moved downwardly relatively to the outer race 13 by a predetermined force exerted by coil springs 32. The top face of the outer race 13 is then ground flush with the top face of the inner race 12. When the bearing is in use it is so mounted that the top faces of the inner and outer races are in a common plane whereby the same preload will exist in the bearing as existed during grinding.
Patent GB-575970-A (GB)
Title: An improved appliance for use in the repair of textile articles
IPC: D05B91/08
Filed: 1944-04-18
Abstract: 575,970. Darning. ROBINSON, T. A. W. April 18, 1944, No. 7182. [Class 112] In a darning mushroom, which comprises a translucent cover 11 carried by a conical part 10 fitted to a handle 1 carrying an electric lamp 4, the conical part 10 fits on a plain portion 3 of the handle with friction tightness.
Patent GB-394445-A (GB)
Title: Improvements in or relating to cases for toilet material in stick form
IPC: A45D40/06
Filed: 1932-03-11
Abstract: 394,445. Cases for lipstick &c. HUDNUT, Inc., R., 113, West 18th Street, New York, U.S.A. March 11, 1932, No. 7332. Convention date, April 15, 1931. [Class 18.] In a case for a stick of toilet material, e.g. lipstick, in which a slidable stick holder 9 can be caused to project through an opening 3 provided with a closure plate 11 which opens and closes automatically as the stick is projected and retracted respectively, the holder 9 is slid axially by a rotary member 6 located substantially concentrically inside the case and formed at the bottom with a knurled operating member 8 ; and the closure plate 11 is rotated to the opened or closed positions by means of an abutment 14 or 23 thereon, acting as a lever pivoted on the hinging axis of the closure, which abutment engages with a second abutment when one of the two abutments is rotated into engagement with the other by rotation of the tube 6. The holder 9 carries a pin 10 which passes through a slot 7 in the rotary tube 6 into a spiral slot 5 in a fixed sleeve 4 formed of a strip of elastic material. In the modification shown in Fig. I, the closure 11 is pivoted in the wall of the spherical head of the case, and the tube 6 carries teeth 15 which, when the tube 6 is rotated, engage with the teeth 14 on the closure 11 and cause the latter to open. A tube 19 inserted in the end of the tube 6 serves to guide the stick. In the modification shown in Fig. 3, the closure 11 is pivoted on a ring 19 which is secured on the tube 6 and, as the tube 6 is rotated, the extension 23 on the closure engages abutments 21 or 22 on the fixed tube 4 to open or close the plate 11 respectively. The Specification as open to inspection under Sect. 91 comprises also modifications in which the closure 11, Fig. 7 (Cancelled), is operated manually by means of a knob 27 and the spherical head of the case is joined to the tube 6 so that the cosmetic is slid upwards by rotating the head. This subject-matter does not appear in the Specification as accepted.
Patent GB-162876-A (GB)
Title: An improved inking device or attachment more particularly for use with addressing machines
IPC: B41L47/46
Filed: 1920-03-11
Abstract: 162,876. Barman, L. M., and Roneo, Ltd. March 11, 1920. Inking - apparatus. -An inking - attachment which is especially applicable for addressing- machines of the kind in which stencil cards are employed is constructed with an ink-container 18, Fig. 3, mounted in a tray 17 carried by a lever 16 which can be moved to bring one or more wicks on the container into contact with one roller 33 of a series of ink-distributing rollers 33, 32, 31. The rollers 32, 33 are covered with felt, and absorb a certain amount of ink. These rollers are mounted in arms 30 pivoted at 29 to brackets 24 on the sides 1 of a magazine containing stencils 40, and the arms 30 can be held in a position away from or in contact with a segmental roller 9, which effects the printing in conjunction with a similar impression roller 12, by means of a cam on a sleeve 35 which can be rotated by a hand lever 37. This lever is set to lift the roller 31 cut of contact with roller 9 while a handle 39 is operated to rotate the rollers 33, 32, 31 to distribute a supply of ink thereover. For printing the roller 31 is moved into contact with roller 9 and by operation of a handle 8 on a shaft 6 the rollers 9, 12 are rotated to coact with a stencil which is automatically advanced by a slide operated from a shaft geared to the shaft 11 of roller 12, and an envelope which is advanced along a slide 4 by a hand-lever indicated diagrammatically at 5.
Patent GB-1518066-A (GB)
Title: Flanged pipe joints
IPC: F16L53/70
Filed: 1977-02-22
Abstract: 1518066 Pipe couplings W SCHULZ 22 Feb 1977 [25 Feb 1976 22 Oct 1976] 07406/77 Heading F2G A pipe joint for use with concentric pipes and allowing transmission of conductive fluid flowing in the space 12 between the pipes comprises a pipe flange component 1 formed with a central aperture and radially outer apertures 2 together with a sealing gasket 7 shaped to provide sealing zones to surround both the central and each of the outer apertures; the flange and gasket being formed such that they define between them channels which extend between said zones and therefrom to the outer periphery of the joint to provide an escape path for leaking fluid. The gasket may include an annular hub portion 7a connected via radial webs to outer annular portions defining escape channels therebetween, and may be formed of a metal plate coated with a sealing material or alternatively may be formed entirely of a synthetic polymeric material.
Patent GB-1152604-A (GB)
Title: Improvements relating to Nursing Tents
Inventor: O'HALLORAN THOMAS PATRICK
IPC: A61G10/00
Filed: 1967-02-16
Abstract: 1,152,604. Nursing tent VICKERS Ltd. 14 Feb., 1968 [16 Feb., 1967], No. 7446/67. Heading A5R. A collapsible nursing tent comprises a frame 2 composed of four. corner uprights 3A-D: connected by a four-sided upper frame 4 and a three-sided lower frame 5 arranged to rest on the floor around a bed 1 supporting an airtight chamber with base 6, side walls 7 and 8, end walls 9 and roof 10 of flexible sheet material, e.g. clear P.V.C. The side wall 8 is of dished form with marginal extensions 11 and a sealable access opening 14 and is supported by an upper and a lower arm 12 which may be swung from the position shown in continuous lines to that shown by the dotted lines so that the side wall 8 bellies outwardly or inwardly, thus varying the internal volume of the tent. Preferably the arms are biased, e.g. by a spring, to the "inward" position but will swing to the "outward" position on application of a slight overpressure in the tent. The tent also comprises an air inlet 13 and air locks 15 with sealable openings 16 and 17.
Patent GB-915430-A (GB)
Title: Synthesis of carbazoles
IPC: C07D209/80
Filed: 1960-03-02
Abstract: The invention comprises the new compounds indolo-[3,2-b]carbazole and indolo-[2,3-b]carbazole and also a method of synthesising carbazoles by introducing into a reaction zone maintained at a temperature of not less than 400 DEG C., in the absence of air or oxygen and in the presence of platinum supported on magnesium oxide as catalyst, a diaryl amine or a N,N1-diaryl phenylene diamine.  Suitable starting materials are, for example, diphenylamine, which yields carbazole, phenyl-b -naphthylamine which yields 2.3-benzocarbazole, phenyl-a -naphthylamine which yields 1.2-benzocarbazole, N,N1-diphenyl-p-phenyldiamine which yields indolo-[3,2-b]carbazole and N,N1-diphenyl-m-phenyldiamine which yields indol-[2,3-b]carbazole.  The reaction is preferably carried out at temperatures in the range 400 DEG -650 DEG C.  Substituted diphenylamines may be used as starting materials, e.g. N-ethyldiphenylamine, di-p-tolylamine, 2-nitrodiphenylamine, p-fluorodiphenylamine and p-hydroxy diphenylamine, but yield in each case unsubstituted carbazole.  Specification 860,554 is referred to.
Patent GB-512309-A (GB)
Title: Improvements in or relating to devices for facilitating the extraction of juices from fruit
IPC: A47J19/02
Filed: 1939-03-08
Abstract: 512,309. Extracting juices from fruit. NOGER, A. March 8, 1939, No. 7501. [Class 28 (ii)] A device for facilitating the extraction of juice from lemons, oranges, grape-fruit, &c., comprises a perforated tube 3 conically reduced and provided with an undulating, and if desired a toothed, cutting- edge at the end 5, the other end carrying an extension 6 formed with a dished flange 7 which prevents the rind of the fruit from breaking away when the tube is inserted into the fruit. A screw thread 8 lies beneath the rind when the squeezing is effected by the hands, and prevents the tube from being displaced in the fruit. The end 5 and the end of the extension 6 are shaped to fit into a central hole in a bowl-like member '2 having depending flanges which fit over the sides of a tumbler. As shown, the device is accommodated inoperatively in the bowl 2. In use, the tube is thrust into and turned in the fruit until the rind is engaged by the thread 8 and the flange 7. The extension 6 is then placed in the hole in the bowl 2 and squeezing is effected. The extension 6 is made of polygonal or corrugated cross-section to assist in the holding of the device during the penetration of the fruit. The tube may be annealed and chromiumplate thin sheet brass. The device may be used for coring apples or pears.
Patent GB-273659-A (GB)
Title: Improvements in and relating to electrolytic deposition of chromium
IPC: C25D17/10
Filed: 1927-03-18
Abstract: 273,659. General Motors Corporation, (Assignees of Phillips, W.M.). June 30, 1926, [Convention date]. Chromium, depositing; electrodes.-In the deposition of chromium an anode of a ferrous metal such as iron or steel is employed under such conditions that no iron is deposited. The anode may be shaped conformably to the article to be plated and may be constituted b the cell. The electrolyte may consist of chromic acid of purity not less than 97 per cent, together with not more than 12¢ gms. per litre of chromium sulphate. A small amount of boric acid or a borate may be added. Apparatus for plating a concave reflector 18 comprises an iron cell 10, one side of which is formed concave to constitute an anode 19. The reflector together with other articles 16 may be suspended from a bus-bar 15 supported on insulators 17.
Patent GB-421266-A (GB)
Title: Improvements relating to four-stroke-cycle internal-combustion engines
IPC: F02B75/04
Filed: 1933-03-13
Abstract: 421,266. Gearing for converting reciprocating into rotary motion. BONFA, A., 608, Umbilo Road, Durban, South Africa. March 13, 1933, No. 7635. [Class 80 (i)] [See also Group XXVII] In engines in which the crank-shaft 6 is eccentric to the main-shaft 16, and the crankpin 15 describes a hypotrochoidal curve, an externally toothed wheel 70 journalled on the main shaft 16 is engaged by a pinion 71, of one-third the size, on a shaft 73 journalled in an enlargement of the shaft 16. Engaging pinions 72, 91 are keyed to the shafts 73, 6 respectively. Cam-sleeves 81, 82 operate the exhaust and inlet valve lifters 18, 19. Each sleeve is formed with a key working in a slot in the shaft, and engaging either side of a stop according to the direction of rotation. The key on sleeve 81 extends through 190 degrees and that on sleeve 82 through 10 degrees. The stop comprises hinged arms which may be forced apart for varying the timing, the pinion 70 being adjustable for this purpose, as well as for varying the compression ratio and for reversing, through an angle of from 38 to 42‹. A pin 74 in the pinion engages at one end cam surfaces in the adjoining bearing and at the other end a plate 75. Angular adjustment of the pinion 70 thus slides a rod 76 and tilts a lever 77 the end of which rests between the arms of the hinged stop for the feather keys of the sleeves 81, 82. Ignition contacts are carried by the mainshaft 16 and the wheel 70. Specifications 346,592, and 372,544, [Group XXVII], are referred to.
Patent GB-431419-A (GB)
Title: Improvements relating to dynamo-electric machines
IPC: H02K1/14
Filed: 1934-03-10
Abstract: 431,419. Cores for dynamo - electric machines. PULLIN & CO., Ltd., R. B., and PENGELLY, C. G., Phoenix Works, Seaford Road, West Ealing, London. March 10, 1934, No. 7692. [Class 35] Casings.-A square frame has separate poles, each of which has faces at its outer end disposed at right angles, the poles being positioned by drawing these outer ends into the corners of the frame. In the form shown, the frame 1 consists of a length of seamless tube through which screws 4 project into the pole enlargements 3. The armature can be withdrawn with one end cover 6 when this cover is removed. The other end cover is of insulating material and is provided with terminal sockets 11 and apertures through which brushes 12 extend on to a radial commutator.
Patent GB-953618-A (GB)
Title: Improvements in or relating to feed pre-heating for rotary kiln and like installations and to pre-heaters therefor
Inventor: MCBRIDE WILLIAM JOHN
IPC: F27B7/20
Filed: 1962-02-27
Abstract: 953,618. Preheating and charging granular materials. EDGAR ALLEN & CO. Ltd. Feb. 15, 1963 [Feb. 27, 1962], No. 7718/62. Headings F4B and F4G. Pelletized cement raw materials are dried, preheated and charged into a rotary kiln in apparatus comprising a drier 21 including a chain grate 22 feeding a preheating shaft 8 through a hopper 15, a shaft discharge plate 13 and a shoot 2 feeding preheated pellets into the kiln through an exhaust duct 3, a chamber 10 extending from the latter and formed with nozzles 12 opening into the shaft, an offtake 9 from chamber 10 with valve-controlled branches 17 and 18 leading respectively to the drier and to the atmosphere, and an exhaust passage 16 from the shaft discharging waste gases at the entrance to the drier. The extension 14 of the hopper 15 is destructible at working temperatures and is fed slowly downwards to preserve the pellet bed height above the nozzles less than that below them. The shaft cross-section narrows below the nozzles 12 and again just above the discharge plate 13 which is operated intermittently. This plate may be replaced by a continuously operated discharge device. Baffles 24 in the drier cause the hot gases to pass through the pellets on the grate 22 before leaving by a duct 25. Branch duct 18 and duet 25 may be connected to exhaust fans.