baber/WOPTO huggingface dataset:
Patent GB-1146957-A (GB)
Title: Improvements in or relating to telecommunication exchanges
Inventor: BRAY FREDERICK HARRY
IPC: H04Q3/00
Filed: 1967-05-05
Abstract: 1,146,957. Automatic telephone exchanges. STANDARD TELEPHONES & CABLES Ltd. 5 May, 1967, No. 20922/67. Heading H4K. A subscriber who wishes future calls to him to be diverted at the exchange to a predetermined other subscriber first dials from his own subset for a common transfer circuit and on receiving second dial tone or a proceed to send signal dials in a digit identifying the other subscriber. The transfer circuit transmits a signal back over the network to the line circuit of the calling subscriber which enables a socalled subscriber's transfer circuit associated with the calling subscriber's line, so that as the common transfer circuit offers the identity of the other subscriber to all subscriber's transfer circuits belonging to lines having the transfer facility the identity is only registered in the calling subscriber's transfer circuit currently being enabled. A particular relay is thereby operated in this transfer circuit, which relay self holds when the enablement signal ceases and which disconnects the subscriber's outlet of the final selector or switching stage and connects it to the line of the other subscriber. A calling subscriber receives transfer tone when the other subscriber's identity is set in the transfer circuit and he then hangs up. To end the transfer arrangement a subscriber sends a cancellation signal to the common transfer circuit which then operates a relay in the subscriber's transfer circuit which releases the operated relay, release being delayed if a transferred call is in progress. The transfer facility is described with reference to a cross-bar exchange and a step-by-step mechanical switching exchange.
Patent GB-581068-A (GB)
Title: Improvements in or relating to arrangements for selecting electric pulses according to duration
IPC: H04N5/10
Filed: 1944-10-27
Abstract: 581,068. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. Oct. 27, 1944, No. 21026. Convention date, Dec. 1, 1942. [Class 40 (v)] Pulses of predetermined duration are separated from others by differentiating all the pulses, generating local pulses of the predetermined duration with the same commencing time as the primary pulses, differentiating the local pulses, combining all the resultant leading and trailing edge pulses and clipping the combined pulses to produce an output pulse only when a primary pulse of the correct duration is present. The received pulses A, B, C, D, Fig. 3, are differentiated to give pairs of positive and negative short pulses A1, A2, B1, B2, &c. corresponding to the leading and trailing edges of the original pulses. The leading edge pulses A1, B1, &c. trigger a flip-flop pulse generator, Fig: 2 (not shown), which produces rectangular pulses 18 of constant width equal to the width of the desired pulses, which are then differentiated to give short pulse pairs 18a, 18b. Combination of pulses 18a, 18b and A1, A2, B1, B2, &c. gives coincidence between A2 of the desired pulse and 18b of the corresponding locally generated pulse, but no coincidence when undesired pulses of different width are concerned, and produces double amplitude pulse 31 which is isolated to produce pulse 35 by a clipper circuit cutting off at level 34. Specification 528,192 is referred to.
Patent GB-1158764-A (GB)
Title: Leak Detector
Inventor: LINSELL RUSSELL FREDERICK
IPC: G01M3/00
Filed: 1967-05-05
Abstract: 1,158,764. Detecting leaks. ESSO RESEARCH & ENG. CO. March 14, 1968 [May 5, 1967], No.21048/67. Heading G1S. A method and apparatus for detecting leakage of gas or liquid into a flowing liquid comprises inserting a probe 2, provided with at least two passages 5, 6 with openings 7, 8, into a pipe 2 carrying the flowing liquid so that one of the openings 8 forces upstream and the other 7 down stream whereby the difference in pressure at the two openings causes some of the flowing liquid to circulate via the probe through a detecting device 10 and then return to the mainstream of the flowing liquid, contaminating gas or liquid insoluble in or immiscible with the flowing liquid being trapped and thus detected in the detecting device. The detecting device is connected to the probe by flexible tubing 9, 12. The detecting device comprises a transparent container 11 mounted on a support through which the flow path of the liquid passes, means 13, 14 being provided to isolate the container and means 22, 24, Fig. 2 (not shown) to drain the container.
Patent GB-700884-A (GB)
Title: Multi-disk floating contact mechanical shaft seal
IPC: F16J15/34
Filed: 1951-09-06
Abstract: 700,884. Shaft seals. SUMMERS, O. B. Sept. 6, 1951 [Sept. 22, 1950], No. 21059/51. Class 122 (5) A shaft seal comprises a seal housing 12 containing a plurality of discs 50-54 slidable axially relatively to the shaft 10 and driven at progressively decreasing speeds, floating sealing discs 56-60 mounted between the driven discs and a contact member 62 that surrounds the shaft, is resiliently sealed to the seal housing and engages a floating seal disc 61 adjacent the lowest speed driven disc 54. The discs 50-54 are of progressively increasing diameter and are driven through gears 44-49 of progressively decreasing diameter that are fixed to a shaft 32 journalled in the seal housing 12 and the largest 44, of which is driven by, the toothed flange 42 of a collar 40 fixed to the shaft 10. The contact member 62 is fixed to one end of a flexible bellows 63 whose other end is secured to the seal housing and the member 62 is urged into sealing contact with the floating disc 61 by the bellows assisted by a spring 66. The pressures in the seal housing and the shaft housing 11 to which it is attached are equalized, through a conduit 38 and a grit excluding seal 16 is provided where the shaft enters the seal housing.
Patent GB-814826-A (GB)
Title: Improvements in or relating to elevators
IPC: A01D87/02
Filed: 1956-07-09
Abstract: 814,826. Portable conveyers. HARRIS, G. Oct. 8, 1957 [July 9, 1956], No. 21133/56. Class 78 (1). In a portable agricultural elevator comprising a boom 1 on which an endless conveying element, e.g. an endless belt, is mounted, an axle 3 carrying a pair of ground-engaging wheels 4, a stay 11 connecting the axle 3 to the lower end of the boom, and a strut 2 pivoted at its lower end to the axle 3 and having its upper end slidable in a guide 5 on the underside of the boom for adjusting the elevation of the boom, there is provided a second axle 9 mounted on the lower end of the boom and carrying a pair of wheels 10, and a pair of links 6, 7 hinged together and connected between the axle 9 and the strut 2. When the strut 2 is moved downwardly in the guide 5, e.g. by a cable extending from a winch on the boom or on the ground to the strut 2, the hinged connection between the links 6, 7 is moved into contact with the ground so that after the upper end of the boom has been raised a certain distance the wheels 10 are lifted off the ground (Fig. 3) so that both upper and lower ends of the boom 1 are thereafter simultaneously lifted.
Patent GB-927292-A (GB)
Title: Improvements in pallet lift trucks
IPC: B62B3/065
Filed: 1960-06-16
Abstract: 927,292. Pallet trucks. GESELLSCHAFT DER L. VON ROLL'SCHEN EISENWERKE A.G. June 16, 1960 [June 30, 1959], No. 21180/60. Class 78 (3). The fork 2 of a pallet truck is connected by links 9 to a stationary yoke 6 and is raised and lowered by a ram 5 fed by a pump 7 controlled by draw-bar 13, movement of links 9 being transmitted by rods 12 to roller carrying links 15. With the fork lowered, the angle α, between the surface of the tines and the plane containing the axis of the pins 11, which connect links 9 and rods 12, and the axis of the spindle 10, which connects the fork 2 to the links 9, is between 130 and 140 degrees. Also the angle #, between the surface of the tines and the plane containing the axes of pins 16, which connects the links 15 and rods 12, and the axes of the pivots 17, which connects the fork 2 and the link 15, is 90 degrees; the angle # between the ground and the plane containing the axis of the spindle 10 and of the spindle 18, which connects the yoke 6 and the links 9, is 22 degrees, and the ratio of lever arm a, b is 4.3 :1.
Patent GB-224957-A (GB)
Title: Improvements in measuring taps
IPC: G01F11/22
Filed: 1923-08-22
Abstract: 224,957. Chambers, C. Aug. 22, 1923. Moving-chamber apparatus.-A particular construction of measuring tap is described. The casing 1 is open at one end and closed at the other end with the exception of a small central opening. An inlet port 6 is arranged near one end and an outlet port 9 at the other end. The casing is cut away at the open end to form a recess 7 the edges of which form stops to limit the motion of the valve which carries a pen engaging the recess. The valve 8 is divided longitudinally by a partition 13 to form two measuring chambers, each of which is provided with ports 15, 17 adapted to register with the ports 6, 9. One end of the valve is closed and carries a screwed projection which is passed through the hole in the end of the casing to receive a cup washer 24 enclosing a spring 23, a washer 22 and a nut 25. The other end of the valve which projects beyond the casing is closed by a plug 26. A screwed cap 27 and handle 19 are fitted also at this end. Two small vent passages 11 formed by short tubes 12 extend above the top of the casing. A glass dish may be substituted for the plug 26, the handle being arranged at the opposite end. Specification 188,817 is referred to.
Patent GB-158923-A (GB)
Title: Means for detecting proximity of submarine cables, particularly for guding ships, orfor locating faults or breaks in the cable
IPC: C13B30/10
Filed: 1919-05-15
Abstract: 158,923. Manson, J. C. Aug. 29, 1919. Locating faults.-In means for locating submarine cables as in indicating navigable channels by a cable laid in the fairway or for locating faults in cables, alternating current is supplied to the cable, the outer end of which is earthed, and detecting coils are fitted at opposite sides of the vessel so that the hull forms a magnetic screen between them. Apparatus is provided for sending a signal through the cable at intervals. By means of a switch d, either of the detecting coils a, a' may be connected through a relay or amplifier e with a telephone receiver h or a signalling device so that the currents induced in the coils may be compared. To locate a fault the cable is followed until detection of the signal ceases. The frames of the coils may be pivoted to the ship so that they may be swung inboard or outboard. Specification 134,226, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-1211851-A (GB)
Title: Improvements in or relating to circuit arrangements incorporating transistors
Inventor: BENSON WILLIAM DOUGLAS
IPC: H03F1/30
Filed: 1967-05-09
Abstract: 1,211,851. Transistor circuits. MULLARD Ltd. 2 May, 1968 [9 May, 1967], No. 21421/67. Heading H3T. A D.C. coupled amplifier including transistors Tr3, Tr4, Tr5 provides the bias for each transistor Tr1, Tr2 of a preceding stage, the bias voltage being a multiple of the base emitter junction potentials of the transistors Tr3, Tr4, Tr5. A voltage of 4Vbe is maintained at Tr5 collector, and consequently a voltage of 3Vbe at the emitter of emitter follower Tr6, by a D.C. feedback path through resistor R5 and the secondary of a transformer T3 to the base of Tr3, the voltage 3Vbe being that which is necessary to maintain a voltage Vbe across the base emitter junction of each of the three transistors Tr3, Tr4, Tr5. The junction of R5 and T3 secondary is decoupled by a capacitor C6 and provides a bias of 3Vbe to the transistor Tr1. A second emitter follower Tr7 provides a second bias of 3Vbe to the transistor Tr2. Tr1 and Tr2 are arranged as a long-tailed pair in which an r.f. signal from an input transformer T1 is mixed with an oscillator output fed in at A, the transformers T2, T3 being tuned to the i.f. frequency. The i.f. signal, amplified in the D.C. amplifier, is demodulated by the emitter-base junction of Tr7 and a capacitor C7. The bias line from Tr6 to Tr1 through resistor R3, also acts as an a.g.c. line. In a modification (Fig. 2, not shown), an oscillator transistor Tr8 is included, and the emitter follower Tr6 is not used.
Patent GB-149845-A (GB)
Title: A heat retaining plate for cooking purposes
IPC: F24C15/10
Filed: 1919-09-01
Abstract: 149,845. Cruickshank, A. B. Sept. 1, 1919. Heat retainers and deflectors.-A metal heatretaining cooking-vessel support for gas, electricity, &c. has a concave corrugated top with covered openings between the corrugations and has also an outer flange g sloping downwardly and outwardly. The corrugations b are both concentric and radial, and the covers for the openings are in the form of protuberances pressed up from the plate and each furnished with two lips f which direct the hot air sideways.
Patent GB-1109344-A (GB)
Title: Stable fumaric acid-containing compositions for beverages
IPC: A23L1/00
Filed: 1966-05-13
Abstract: A fumaric acid-containing composition having an improved rate of cold water solubility comprises a finely ground fumaric acid powder having a minor dimension below about 20 microns coated with (A) a water-dispersible, edible wetting agent consisting of dioctyl sodium sulphosuccinate, sodium lauryl sulphate, sodium lauryl sulphoacetate, sorbitan monolaurate and/or a polyoxyethylene sorbitan fatty acid ester containing from 12 to 18 carbon atoms in the fatty acid group; and (B) a water-dispersible, edible polymeric substance consisting of pectins (particularly apple or citrus pectin), methyl cellulose and/or polyvinyl pyrrolidone, wherein the wetting agent (A) and polymeric substance (B) are each present in an amount to provide from 0.05% to 1% by weight of the total composition.  The fatty acid moiety of the polyoxyethylene compound may be monolaurate, monostearate or tristearate.  The compositions are prepared by drying the finely-divided fumaric acid in contact with a solution (water) containing the appropriate substituents as follows: (a) finely ground fumaric acid is slurried in an aqueous solution of the appropriate additives and the slurry is spray-dried; (b) fumaric acid is coated with a solution of the appropriate additives by mechanical mixing and the product is dried; and (c) fumaric acid is spray coated with a solution of the appropriate additives as it is being ground in a mill and the product is dried.ALSO:A fumaric acid-containing composition having an improved rate of cold water solubility comprises a finely ground fumaric acid powder having a minor dimension below about 20 microns coated with (A) a water-dispersible, edible wetting agent consisting of dioctyl sodium sulphosuccinate, sodium lauryl sulphate, sodium lauryl sulphoacetate, sorbitan monolaurate and/or a polyoxyethylene sorbitan fatty acid ester containing from 12 to 18 carbon atoms in the fatty acid group; and (B) a water-dispersible, edible polymeric substance consisting of pectins (particularly apple or citrus pectin), methyl cellulose and/or polyvinyl pyrrolidone, wherein the wetting agent (A) and polymeric substance (B) are each present in an amount to vide from 0.05 to 1% by weight of the total composition. The fatty acid moiety of the polyoxyethylene compound may be monolaurate, monostearate or tristearate.  The compositions are prepared by drying the finely-divided fumaric acid in contact with a solution (water) containing the appropriate substituents as follows: (a) finely ground fumaric acid is slurried in an aqueous solution of the appropriate additives and the slurry is spray-dried; (b) fumaric acid is coated with a solution of the appropriate additives by mechanical mixing and the product is dried; and (c) fumaric acid is spray-coated with a solution of the appropriate additives as it is being ground in a mill and the product is dried.
Patent GB-200722-A (GB)
Title: Improvements in or relating to furnaces
Filed: 1922-08-08
Abstract: 200,722. Babcock & Wilcox, Ltd., (Deutsche Babcock-&-Wilcox Dampfkesselwerke Akt.-Ges.). Aug. 8, 1922. Crown and roofs; stoking.-In a furnace adapted for burning fuels difficult of ignition which are dried on the front part of the grate by means of fuel gases led from above, part of the furnace gases are drawn off at the hottest part of the furnace through an opening g in the ignition arch f and are led between the arches b and f and through a duct controlled by a damper m. In the chain-grate stoker illustrated a gate e intersects the ignition arch and controls the fuel supply. Beneath the drying-chamber is a troughshaped box i with suction pipes k. Dampers l carried by the stoker chains are used for closing 'the suction space.
Patent GB-390699-A (GB)
Title: Improvements in and relating to alternating current motors for television and like apparatus
IPC: H04N5/04
Filed: 1932-07-30
Abstract: 390,699. Motors. SœDDEUTSCHE TELEFON - APPARATE - KABEL - UND DRAHTWERKE AKT. - GES. TEKADE, (formerly SœDDEUTSCHE TELEFONAPPARATE-, KABEL-UND DRAHTWERKE AKT.-GES.), 33, Nornenstrasse, Nuremberg, Germany.) July 30, 1932, No. 21564. Convention date, July 30, 1931. [Class 35.] Motors with unwound armatures ; induction motors.-A single phase synchronous motor for television apparatus having the stator wound three phase and provided with phase displacement means has a salient pole unwound iron rotor with a squirrel-cage winding 12 for starting. The stator windings may be star or delta connected.
Patent GB-1292098-A (GB)
Title: Hydraulic system
IPC: C10B21/22
Filed: 1971-04-19
Abstract: 1292098 Hydraulic braking systems BENDIX CORP 19 April 1971 [24 Feb 1970] 21771/71 Heading F2F  An hydraulic system comprises a control valve movable in a bore of a housing which includes inlet and exhaust ports 14, 18 connected to an hydraulic pressure source 20 and an hydraulic reservoir respectively. The housing also includes an outlet port 16 connected to at least one hydraulic control device, e.g. power steering gear 22, which is in turn connected tothe hydraulic reservoir. The control valve comprises a movable spool member 24 which, when actuated by an input control member 68, moves from a first abutment position in which two fluid connections, the first between the exhaust port 18 and a work port 52 which is connected to a pressure-actuated device and the second between the inlet and outlet ports 14, 16, are realized, towards a second abutment position to terminate the first connection and thereafter to connect the inlet port 14 to the work port 52 and simultaneously restrict the second connection, a constant section passage being maintained between the hydraulic pressure source 20 and the hydraulic control device to maintain a fluid flow in the control device when the spool member is actuated from its first abutment position. In the construction shown, the pressure actuated device comprises a brake system master cylinder, the spool member 24 being actuated by a lever 68 pivotally mounted on a manually actuatable push-rod 62 which if the boost supply fails is able to contact the piston 56 of the master cylinder to apply the brakes manually. The constant section passage, as shown, is formed by a groove 30 in the spool member 24 or in the wall of the bore although alternatively it may be formed by a passage in the valve housing (Fig. 4, not shown).
Patent GB-1209207-A (GB)
Title: Polyhydrazide solutions
IPC: C08G73/08
Filed: 1968-05-08
Abstract: 1,209,207. Polyhydrazides. GLANZSTOFF A.G. 8 May, 1968 [10 May, 1967],No. 21776/68. Heading C3R. A novel composition comprises a solution of a polyhydrazide containing units of formula where R is naphthylene or phenylene and R<SP>1</SP> is phenylene or a diphenyl ether group, in aqueous alkali metal hydroxide solution. The polyhydrazide may be dissolved in the alkali metal hydroxide solution, e.g. a solution of sodium or potassium hydroxide, the solution shaped, e.g. by spinning fibres or casting films, and the polyhydrazide precipitated. e.g. by dilution or acidification: the material may then be heated to convert it to insoluble and infusible polyoxadiazole polymer.
Patent GB-1040211-A (GB)
Title: Automatic dispensing nozzle
IPC: B67D7/48
Filed: 1963-05-31
Abstract: 1,040,211. Valves. DOVER CORPORATION. May 31, 1963 [May 31, 1962], No. 21781/63. Heading F2V. A fluid dispensing nozzle has an inlet 3, Fig. 1, a nozzle outlet 35 and valve member 8, loaded by a spring 11 towards the closed position. A lever 19, pivoted at 20 to a member 21, opens the valve against the spring loading and the lever may be held in the open position by a latch 22. When the valve is open, the flow through the valve causes a suction in passages 16, 30 and a chamber above a diaphragm 26 which chamber is vented through pipe 34 and orifice 37 until the orifice is immersed in liquid. The member 21 is normally held in the position shown by a latch mechanism comprising a bell-crank lever 56, Fig. 2 (not shown), pivoted at 57 and having a recess 62 on one leg 56b which engages a roller 50 on the member 21. The lever 56 is biased to the latched position by a spring 63 and its other leg 56a is engaged by a starter arm 60a of a lever 60 pivoted at 61. The other arm 60b of the lever 60 is bifurcated and engages a stem 40 of a head 44 secured to the diaphragm. When the pressure above the diaphragm is reduced owing to the inversion of orifice 37, the diaphragm rises against a spring 38 to rotate lever 60 in a clockwise direction which in turn rotates the lever 56 to release the member 21. The loading of the spring 11 causes the member 21 to move against the force of a spring 46 to allow the valve 8 to close. The lengths of the levers 60, 56 are preferably such that a velocity ratio of less than unity is provided between the input and output ends.
Patent GB-477627-A (GB)
Title: Aircraft cowling
IPC: B64D33/08
Filed: 1936-08-07
Abstract: 477,627. Aero-engine cowlings. READ, J. R. Aug. 7, 1936, No. 21811. [Class 4] An aero-engine cowling comprises openings for the discharge of the air flowing through the cowling and each opening is controlled by a group of at least three shutters having overlapping sides, the central shutter D or shutters being hinged at or near its forward end and the lateral shutters D<1>, D<2> being hinged at or near their sides D<3>, D4 so that the only exit for air is at the rear of the shutters. In one form, exhaust pipes B<1> are led through lateral openings in the cowling, the rear of the openings being formed by plates C. The shutters are connected by pins and slots D<6>, D<7> and a leaf-spring F. The shutters are opened by a lever F<5> which engages a fork F<1> on a rod F<2> guided in brackets F<3> and moved by a rod F. In a modification, the lever is operated through a spring, the outer end of the lever being connected by rods to the lateral shutters and by a helical spring to the central shutter. In a further modification, the lever is operated through a spring and a spring connects the lateral shutters to urge them into the open position. A further spring having an adjustable abutment is inserted on the operating-rod such that it is compressed when the rod is moved to open the shutters. The control may be 'operated by the pilot or by an automatic device dependent, e.g. on the temperature of the liquid cooling system.
Patent GB-327924-A (GB)
Title: Process for the manufacture of menthane
IPC: C07C5/03
Filed: 1929-07-16
Abstract: 327,924. Schering-Kahlbaum Akt.- Ges. June 8, 1029, [Convention date]. Hydrogenized organic compounds, catalytic production of.-Dipentene is treated with hydrogen at elevated temperatures under pressure in the presence of a hydrogenation catalyst, preferably with a basis of nickel until the combination with hydrogen is complete. The menthane is then separated from the catalyst.