baber/WOPTO huggingface dataset:
Patent GB-606408-A (GB)
Title: Improvements in and relating to frequency-controlled valve oscillators
IPC: H03B5/28
Filed: 1946-01-21
Abstract: 606,408. Resistance measurements. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 21, 1946, No. 1958. Convention date, Jan. 26, 1945. [Class 37] [Also in Groups XXXVIII and XL (c)] In a valve oscillator employing phase-shifting networks in the reaction coupling, two networks are employed in series, one giving a phase-shift in one direction of an amount determined by the frequency and the other shifting the phase in the opposite direction by an amount which is adjustable or selectable, but is substantially independent of frequency. As shown, two amplifiers 4, 5 are connected in cascade and are arranged to give zero or 180 degrees internal phase-shift. The output is fed back to the grid of the valve 4 by a transformer 7 and two networks 2, 3. The network 2 comprises a bridge of four resistances, one of which, 31, is variable to regulate the oscillation frequency. At the mean value of the resistance 31 the resistances of the bridge are balanced. The output voltage from the terminals 27 is, however, given a phase advance of about 90 degrees by connecting a small condenser across the resistance 30, and as the resistance 31 is varied, this phase advance is increased or diminished, but is substantially independent of frequency. The other network 3 gives a phase retardation which is dependent on frequency, and the frequency of self-oscillation' adjusts itself to a value at which the phaseshifts in the respective networks cancel each other. Ambient temperature variations do not unbalance the bridge and therefore do not affect the frequency. The systems may be used for measuring and recording temperature, pressure, liquid level, mechanical stress, &c., and, in particular, the resistor 31 may be a strain gauge.
Patent GB-393015-A (GB)
Title: Improvements relating to electric contact devices
IPC: H01H63/02
Filed: 1932-01-22
Abstract: 393,015. Automatic exchange switches. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and HUMPHRIES, H. E., 61, Rochester Way, Blackheath, both in London. Jan. 22, 1932, No. 1969. [Class 40 (iv).] In a selecting switch in which a quick "make" " or " break " is produced between two spring contacts 4, 5 at a predetermined point i n t h e path of a cam 3 on a rotary disc 2 corresponding to a predetermined position of the wiper, the springs 4, 5 have projecting portions 7, 8 which are adapted to slip in turn off the cam as it moves along. In the form shown, the springs 4, 5 tend to engage each other and movement of the cam 3 from the position shown in Fig. 1 first causes both springs to move together away from the centre ; then, when the cam reaches a position 9, the spring 5 is released and the circuit opened, and a little later when the cam reaches a position 10 the spring 4 is also released and circuit is made again. The circuit then remains closed for the rest of the revolution. The normal position of the cam 3 is the position 9 in which the contacts are separated.
Patent GB-1470512-A (GB)
Title: Warning systems
IPC: H01H35/32
Filed: 1974-04-11
Abstract: 1470512 Alarm systems M O BYRD 11 April 1974 2015/73 Heading G4N [Also in Division H1] A warning system actuator comprises a bellows 5 open to a chamber 1 connected (by tube 4) to a source of partial vacuum (a vehicle engine inlet manifold), an air bleed valve 6 connected to bellows 5, and at least one arm 8, 9 attached to the bellows 5 and movable rectilinearly to operate switching means, with the vehicle in motion and the engine running, bellows 5 are collapsed, as shown, and switch contacts 20, operated through cam follower 19 and spring biased plunger 18, are closed, Switch 21, representing switches on the doors, and switch 22, operable by a key, i.e. the lock on the driver's door, are open. When the car is stopped, bellows 5 try to expand but are stopped by catch 17 engaging step 10 on arm 8. When the car doors are closed and locked, switches 21 remain open but switch 22 is closed. If a door is forcibly opened without using the key, switches 21 are closed and switch 22 remains closed thus completing the circuit through contacts 20 to solenoid 13 which withdraws its armature 14 closing contacts 16 and sounding the horn or other alarm. At the same time, catch 17 is withdrawn by armature 14 releasing arm 8 to allow the bellows to extend under the control of bleed tube 6, provided with an adjustable needle valve. After a predetermined time, follower 19 runs over cam 11 on to surface 12 allowing plunger 18 to open contacts 20 de-energizing solenoid 13. Catch 17 then abuts arm 8 below step 10 and holds contacts 16 closed until bellows 5 are fully extended and until 17 runs off the bottom of arm 8 releasing contacts 16 to stop the alarm. When the engine is restarted, the descending arm 8 pushes the catch 17 around its pivot until step 10 is cleared. In Fig. 2, chamber 1 includes a diaphragm 23 which closes contacts 24 when vacuum is applied to the chamber. Arm 26 engages a spring biased plunger 27 to close contacts 28. When bellows 5 are collapsed (as shown) plunger 27 registers with a dent 29 in arm 26 which allows the plunger to open contacts 28. Contacts 24, 28 are in series with a warning light 30 and a switch 31 which remains closed until a car seat belt is fastened. When the engine is started diaphragm 23 closes contacts 24 completing a circuit through contacts 28 to light 30 unless the seat belt is fastened. After a preset time bellows 5 collapses fully, opening contacts 28 (because of dent 29) switching off lamp 30 even if the seat belt is not fastened.
Patent GB-826099-A (GB)
Title: Flexible coupling
IPC: F04C15/00
Filed: 1958-01-22
Abstract: 826,099. Universal joints. COMPTOMETER CORPORATION. Jan. 22, 1958 [Feb. 13, 1957], No. 2154/58. Class 80 (2). A shaft coupling 15 has end bores 16 for the reception of the shafts 13, 14 and has a non- circular central section bore 17 with which the shaft ends are separately connected. The coupling member 15 is flexible and has a cruciform central section, the end bores 16 gripping the shafts. Tongues 21 connect the slotted ends of the shafts to the cruciform bore, the tongues being slotted at 25 to prevent contact between the two tongues.
Patent GB-661356-A (GB)
Title: Spools for use in processing photographic roll film
IPC: G03D13/14
Filed: 1948-12-15
Abstract: 661,356. Photographic spools. PATERSON, D. M. Oct. 26, 1949 [Dec. 15, 1948], No. 2181/51. Divided out of 661,288. Drawings to Specification. Class 98 (ii). A spool for receiving photographic film for treatment in a processing tank, comprises a pair of spaced coaxial plates rotatable relatively to one another about their common axis and each having on its inner face a spiral track defined by upstanding walls, said tracks having either their outer or their inner ends open for the insertion of the leading end of a film, and, located in at least one track, a captive roller working on an inclined plane forming one wall of the track, the upper end of the incline being towards the entry end of the track and the gap between such upper end of the incline and the opposite wall of the track being less than the diameter of the roller. Apart from the captive roller and the inclined plane, the spool is identical with that disclosed in Specification 661,288. Reference has been directed by the Comptroller to Specification 664,162.
Patent GB-849828-A (GB)
Title: Process for the production of scale-proof and corrosion-proof coverings for the protection of carbon bodies against oxidation
IPC: C04B41/87
Filed: 1957-01-21
Abstract: A carbon body is protected against corrosion by a coating of titanium silicide.  In order to obtain wetting of the carbon by the silicide, a carbide-forming substance such as titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, tungsten, molybdenum or compounds thereof, e.g. molybdenum silicide, should be present.  The coating is applied in a nitrogen-free atmosphere, e.g. by (1) dipping the pre-heated body into a titanium silicide melt, (2) covering the body with a paste consisting of titanium silicide with either an alcoholic silicic acid ester solution or an aqueous emulsion of colloidal alumina, drying, and heating above the melting point of titanium silicide, or (3) spraying on the incandescent body under argon, the body being impregnated with the carbide-forming substance in advance. The titanium silicide layer may be provided with a metal coating, e.g. silver, by spraying, dipping or galvanically.  The silicide coated material may be used for combustion chambers and rocket parts, and the silver coating may be used as a current lead-in for a graphite heating bar or as a soldering material for securing graphite rotor blades in the rotors of gas turbines.ALSO:A carbon body is protected against corrosion by a coating of titanium silicide.  In order to obtain wetting of the carbon by the silicide, a carbide-forming substance such as titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, tungsten, molybdenum or compounds thereof, e.g. molybdenum silicide, should be present.  The coating is applied in a nitrogen-free atmosphere, e.g. by (1) dipping the pre-heated body into a titanium silicide melt, (2) covering the body with a paste consisting of titanium silicide with either an alcoholic silicic acid ester solution or an aqueous emulsion of colloidal alumina, drying, and heating above the melting point of titanium silicide, or (3) spraying on the incandencent body under argon, the body being impregnated with the carbide-forming substance in advance. The titanium silicide layer may be provided with a metal coating, e.g. silver, by spraying, dipping or galvanically.  The silicide coated material may be used for combustion chambers and rocket parts, and the silver coating may be used as a current lead-in for a graphite heating bar or as a soldering material for securing graphite rotor blades in the rotors of gas turbines.
Patent GB-1137664-A (GB)
Title: Electrophotographic material
IPC: G03G5/07
Filed: 1966-01-17
Abstract: 1,137,664. Epoxy resins. RANK XEROX Ltd. 17 Jan., 1966 [18 Jan., 1965], No. 2199/66. Heading C3B. [Also in Division H1]  The Specification discloses a charge transfer complex of a Lewis acid and an epoxy resin. The resin is preferably of the formula wherein X and Y=H, alkyl (C = 1-2) or aralkyl and n is at least 2. In the examples, the preferred resins are the epoxy resin Epon 1031, the product of epichlorohydrin with bisphenol A (" Araldite," Registered Trade Mark) or epoxidized polybutadiene (Oxiron), whilst the Lewis acid may be 2,4,7-trinitrofluorenone, benzanthracene - 7,12 - dione or benzophenone tetracarboxylic acid dianhydride. Additives such as brilliant green, martius yellow, rhodamine B and 2-p-iodophenyl-3- (p - nitrophenyl) - 5 - phenyl tetrazolium chloride may also be used. Numerous other Lewis acids of the inorganic and organic types are also specified together with reactants for forming the resin. An electrophotographic plate may be formed by coating the photoconductive material on an aluminium foil or forming a self-supporting transparent layer of the material.
Patent GB-1093032-A (GB)
Title: Improvements in jig-saw machines driven by an electric motor
IPC: B23D49/16
Filed: 1966-01-18
Abstract: 1,093,032. Sawing. SCINTILLA A.G. Jan. 18, 1966 [Jan. 21, 1965], No. 2210/66. Heading B5L. A jig-sawing machine comprises a saw blade 15 reciprocable in its longitudinal direction from a gear transmission 5 driven by a motor 2, a guide member 18 which engages the back of the saw blade and is operatively associated with the gear transmission to impart to the saw blade, during its outward longitudinal movement, an additional movement having a component effective in the direction of saw advance, and a manually-operable control device 27 for adjusting the additional movement of the saw blade by progressively separating the guide member from the drive of the gear transmission with consequent reduction in the amplitude of movement until complete stoppage of the additional movement is effected. The motor drives the gear transmission which, in turn, drives a disc 6 having an eccentric pin 7 carrying a ball-bearing 8 engaging a guide box 9 connected by a guide rod 12 to a holder 11 for the saw blade 15, the rod being guided in a part 10 secured to the housing of the machine during reciprocation of the saw blade. The guide member consists of a roller 18 which has a peripheral groove 19 engaged by the back edge of the saw blade and is carried by a cranked lever 17 supported by a pivot in a pair of straps 21, 22 extending from the housing. An arm 23 of the lever is engaged by a control link 24 which is mounted on a pivot 25 on the housing and is formed with an oblong aperture 26 embracing the crank pin 7 whereby as the disc 6 rotates to reciprocate the saw blade, it also rocks the control link to move the guide roller 18 and impart the additional movement to the saw blade. The manually operable control device 27 consists of a lever 28 which is mounted on a pin 29 and can be moved to one of a number of positions determined by engagement of a projection 32 in one of a number of recesses 33. The pin 29 is formed with a flattened portion 30 which, according to the position of the handle, co-operates to progressively shift the arm 23 from a position in which the control link engages the arm to impart the additional movement to the saw blade to a position in which the arm is completely isolated from the control link so that no additional movement is imparted to the saw blade. A spring 34 urges the saw blade against the guide roller.
Patent GB-1462304-A (GB)
Title: Self-reconditioning filter apparatus for continuos removal of  solids from a stream of liquid
IPC: B01D33/04
Filed: 1974-01-17
Abstract: 1462304 Moving belt grid T HAGIHARA 17 Jan 1974 02214/74 Heading B1D A continuous moving belt filter grid for use in a rectangular channel comprises toothed wheels 12 and 13 and optionally 14 supporting the grid 10 driven through wheels 14 or optionally 13 and 14 and supported by frame 22 attached about shafts 15 and 19. The grid is composed of plates 38 having a shank portion 39 and a hook portion 40, the plates being connected by transverse rods which engage laterally disposed plates in alternately either their first or second bores 43 and 44 to build a grid in which each shank portion is laterally adjacent the hook portion of its neighbour. The hooks protrude from the assembled grid to convey filtered matter upwardly over an upper toothed wheel whereon before descending the hooks are forced to protrude further from the. grid and eject adhering filtered matter. The plates 38 which may be of unplasticised P.V.C. or stainless steel have projections 49 extending upwardly and outwardly and have lateral rods inserted through the aligned holes 47 to assist solids removal. Fig. 6 (not shown) shows alternate hooks along the grid longer than their neighbouring hooks.
Patent GB-537310-A (GB)
Title: Improvements in electric oscillation generators
IPC: H03K4/24
Filed: 1940-02-08
Abstract: 537,310. Relaxation oscillators. BRITISH THOMSON-HOUSTON CO., Ltd., and MYNALL, D. J. Feb. 8, 1940, No. 2420. [Class 40 (v)] In a relaxation oscillator of the kind in which a condenser 6 is charged through a valve 3 biased by a series resistance in the charging circuit, the biasing resistance 10 is only a portion of the series resistance 10, 11. A leak resistance 12 is connected between the grid and the junction 10, 11 and a condenser 13 is connected between the grid and the outer end of resistance 11. The main condenser 6 discharges through a neon tube or gas-filled valve 9. The resistance 11 may be replaced by another group consisting of elements corresponding to the elements 3 and 10 .. 13.
Patent GB-1575601-A (GB)
Title: Refractory structures for outlet valves for metallurgical vessels
IPC: B22D/
Filed: 1976-01-22
Abstract: In this method, the pressure head (56) of molten metal (2) is measured continuously, via a bottom opening (3) in a tank (1), by weighing. The measured values are used to produce pulses, the frequency of which is proportional to their square root, with the result that the frequency is proportional to the outflow rate. The pulses are counted. When a predetermined count has been reached, the bottom opening (3) is closed by means of a plug (4). The riser level of the filled mould is measured during the pouring of the next mould and, if deviations from a predetermined level are detected, the predetermined count for the filling of the subsequent moulds is corrected. This method allows short cycle times and precise metering of the quantity of metal. It is, in particular, suitable for the filling of casting moulds having a top runner. <IMAGE>
Patent GB-743325-A (GB)
Title: Improvements in or relating to isobutylenepolymer mixtures and compositions
IPC: C08K3/04
Filed: 1952-01-30
Abstract: A plastically deformable composition, suitable for the production of protective sheaths for electric cables, comprises either (a) polyisobutylene with less than 20 parts of a vulcanized or cross-linked substance together with at least 100 parts of carbon black and/or graphite, per 100 parts of polyisobutylene; or (b) a vulcanized copolymer of isobutylene and butadiene or isoprene, the proportion of diene to 100 parts of isobutylene being from 1 to 4 and the vulcanization being effected with not more than 0.2 parts of sulphur, based on 100 parts of copolymer, and at least 100 parts of carbon black and/or graphite per 100 parts of copolymer.  Suitable vulcanizable substances for composition (a) include natural and synthetic rubbers, e.g. polychlorobutadiene.  Vulcanization of this composition may be effected with sulphur and zinc oxide or solely with magnesium oxide and zinc oxide, or with lead oxide, and organic accelerators such as 2-mercapto-imidazoline and tetramethylthiuram disulphide may be added.  Vulcanization in both cases can be carried out before or after final shaping of the mixtures, e.g. on a worm extrusion machine.
Patent GB-291487-A (GB)
Title: Circuit arrangements for selectors for remote control systems, telephone systems and the like
IPC: H04Q3/00
Filed: 1927-01-29
Abstract: 291,487. Aldendorff, T. Jan. 29, 1927. Automatic exchange systems. -To avoid unnecessary movement of a selector when a subscriber seizes a switch and then replaces the receiver without dialling, while still using standard dials, the selector wipers are arranged to stand normally opposite the first level, the first impulse dialled being absorbed. The first impulse energizes dialling relay UR at the beginning and HRI at the end. RI locks up and passes subsequent impulses to the vertical magnet HM. At the end of the digit UR energizes HR2 to connect up the rotary magnet DM. Rotary springs 16 change over and the test relay I'R is connected up when UR falls back again. The relapse of AR at the end of the connection connects an interrupter to DM which drives the wipers until 11th step springs 19 change over. The wipers then drop to their lowest position and are restored by a spring.
Patent GB-324524-A (GB)
Title: Improvements relating to fire-screens or guards
IPC: A47G5/04
Filed: 1929-01-26
Abstract: 324,524. Auster, Ltd., and Lane, P. Jan. 26, 1929. Guards and screens.-A fireguard or screen 1 hinged to supports 4 so that it may be turned down as a whole to a substantially horizontal position, for use as a stand, is provided with means for positively locking the support relatively to the screen and with auxiliary legs or struts 18 for supporting it when so turned down. In the construction shown a transverse rod 8 within a spacing-tube 9 carries at one end a joint member 6 rigidly secured to it, and at the other end passes through a similar member 7, the members 6, 7 having serrated faces engaging, under the action of a clamping nut 10, corresponding serrations on the faces of bosses 3 depending from the frame of the guard and rotatably mounted on bosses 13 at the upper ends of the supports 4. Rotation of the members 6, 7 is prevented, but axial movement is allowed, by projections 12 on them which engage recesses in the bosses 13. Springs 11 separate the serrated parts when the nut 10 is released to allow movement of the screen. Preferably the screen is provided with hinged side wings 15, in which case the struts 18 supporting the screen when horizontal are hinged to them. In the horizontal position the wings 15 are folded flat against the main panel.
Patent GB-592015-A (GB)
Title: Electron discharge vessels
IPC: H01J33/00
Filed: 1945-02-05
Abstract: 592,015. Electron discharge apparatus. PHILLIPS, H. A. DE. Feb. 5, 1945, No. 2876. Convention date, Jan. 15, 1944. [Class 39 (i)] An electron discharge tube for emitting electrons into the space outside the tube is characterised by an electron transmitting window comprising a thin electrical non- conductor, preferably lead glass, and a sheetshaped accelerating electrode provided with a plurality of apertures support ing the thin glass from the inside and preferably sealed to it. In Fig. 1, the sheet 16 of lead glass less than one-thousandth of an inch thick is supported against atmospheric pressure by the accelerating metal grid or perforated plate electrode 18 made from an alloy of nickel, iron and chromium with traces of cobalt so that it may be sealed to the glass. In one method of preparing the window, a very thin glass bulb is blown and contacted with the heated support placed in position in the open end of the tube. In Figs. 4 and 5 (not shown), the invention is illustrated as applied to the bottom of a cup-shaped re-entrant portion of the end wall of the tube, and to a window in a glass flow tube passing through the discharge vessel and used for the irradiation of fluids by electrons.
Patent GB-721762-A (GB)
Title: Improvements in or relating to a circuit arrangement for operating an electric discharge lamp
Inventor: CATES JULIUS
IPC: H05B41/04
Filed: 1952-02-05
Abstract: 721,762. Supply systems for space-discharge apparatus. GENERAL ELECTRIC CO., Ltd. Feb. 2, 1953 [Feb. 5, 1952], No. 3021/52. Addition to 602,858. Class 38 (4). To ensure starting under adverse ambient conditions, a resistance-heated bimetal switch having its heater 18 and contacts 17 connected in series with the glow-starter switch 16 and resistor 15 is added to the starting circuit of the discharge lamp circuit arrangement of the parent Specification. A radio interference suppression condenser 20, 19 shunting each respective switch, or a single condenser shunting both switches, may be provided for facilitating starting, an earthed metallic starting-strip may be provided.
Patent GB-707994-A (GB)
Title: Process for the neutralization of sulphonic acids
IPC: C07C303/44
Filed: 1951-02-08
Abstract: Sulphonic acids such as alkyl, aryl and alkylaryl sulphonic acids are neutralized by intimately admixing the acid with a dry alkalimetal hydroxide and/or carbonate by spraying the reactants simultaneously and in finely-divided form into a reaction zone. The spraying of the liquid sulphonic acid may be effected, for example, through nozzles or on rapidly rotating discs.  The dry carbonate and/or hydroxide may be dispersed by means of a nozzle operated under pressure by a gas such as air.  The reaction zone may be a tower with the reactants sprayed down or preferably up the tower.  The product collecting at the bottom of the tower is allowed to stand for a period to allow the neutralization to be completed.  A small amount of water, say 10-15 per cent by weight of the sulphonic acid, may be used to accelerate the neutralization, this water being introduced into the reaction independently of the reactants or wholly or in part with the sulphonic acid.  Examples describe the neutralization, with anhydrous sodium carbonate, of the crude mixtures obtained by sulphonation of a C12 mono-alkyl benzene, a benzene monoalkylated by a chlorinated petroleum fraction comprising C12 aliphatic and naphthenic compounds and a C9 mono-alkyl benzene respectively.