baber/WOPTO huggingface dataset:
Patent GB-881127-A (GB)
Title: Improvements in or relating to transistor circuits
Inventor: LEAKEY DAVID MARTIN
IPC: H03K17/62
Filed: 1959-05-21
Abstract: 881,127. Transistor switching circuits. GENERAL ELECTRIC CO. Ltd. Aug. 19, 1960 [May 21, 1959], No. 17322/59. Class 40(6). A diode is connected between base and emitter electrodes of a transistor to limit the input voltage to a safe value and a further diode is connected in the emitter circuit in series with the base-emitter path and the input terminals, the further diode being non-conducting when the transistor is cut off so as to prevent the first diode from shunting the input. In Fig. 1 a positive pulse applied to the base will cause the transistor to cut off. Diode 3 limits the base-emitter voltage to a safe value and diode 4 cuts off to prevent the output circuit 7 from loading the input circuit. In Fig. 2 (not shown) the invention is applied to a common emitter stage while in Fig. 3 it is applied to a common base stage, gating potentials being applied to the base terminals to select appropriate pulses from a pulse multiplex wave applied at 20.
Patent GB-738058-A (GB)
Title: Improvements in rotary regenerative heat exchangers
Inventor: ULANDER PER HELGE NATANIEL
IPC: F28D19/04
Filed: 1953-06-23
Abstract: 738,058. Rotary regenerative heat-exchangers. HOWDEN & CO., Ltd., J. June 23, 1953, No. 17386/53. Class 64 (1). In a rotary-matrix type regenerative heat - ex - changer for heat exchange between hot gases and cold air, a stationary cylindrical housing surrounding the rotor and extending axially thereof between suitably apertured end or sector plates 18, 19, is provided on its inner surface with heat insulation 30 extending at least on the hot gas side of the apparatus. Preferably, the insulation is disposed between the housing wall 16 and a sealing plate 32 disposed radially inwardly of the wall. As shown, the edges of the sealing plate 32 are received in grooves 34, 36, in the end plates so that relative movement between these members and the sealing plate is permitted. On the cold gas side of the apparatus heat insulation may be provided on the outer surface of the housing wall. The upper surface of the end plate 18 at the hot gas inlet end of the apparatus may also be provided with heat insulation (Fig. 3, not shown).
Patent GB-848797-A (GB)
Title: Improvements in manifolding machines
Inventor: TAPERELL GEOFFREY LESLIE
IPC: B41J17/00
Filed: 1956-06-05
Abstract: 848,797. Autographic registers. SMITH & SON (ALACRA) Ltd., W. H. June 5, 1957 [June 5, 1956; Nov. 23, 1956], Nos. 17388/56 and 17865/56. Divided out of 848,793. Class 16. [Also in Group XVI] A carbon strip release and warning mechanism for a manifolding machine comprises carbon strip rolls 22 secured to spindles 17-20 which have worm wheels 24, Fig. 3 (not shown), engaging worms 25 keyed to a shaft 26 with limited lengthwise movement thereon between collars 61 to 64. The unwinding pull on the carbon strips as the stationery with which it is interleaved is fed round a platen causes the worms 25 to move down the shaft 26 until their bosses 66 engage the next collar in which position the rolls are held from unwinding except when released by turning of the shaft 26 under the control of a pawl of a solenoid 27 acting on a ratchet wheel 60. When a carbon strip becomes exhausted and is freed from the rolls or tends to hold them still due to its attachment thereto further turning of the shaft 26 causes the worms to ride up the shaft until as shown with the worm 25a a cam 67 on its upper boss 66 raises an arm 71 on a rod 70 causing a further arm 72 thereon to operate a switch 73. The switch 73 may control an indicator lamp, a bell, or means to stop the machine and means may be provided to render any one of the cams 67 inoperative. The mounting of the rolls 22 and the worm wheels 24 is described and claimed in Specification 848,793. Specifications 848,794, 848,795 and 848,796 also are referred to.
Patent GB-530626-A (GB)
Title: Improvements relating to motor control system
IPC: H02P7/18
Filed: 1939-06-14
Abstract: 530,626. Control of D.C. motors. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. June 14, 1939, No. 17433. Convention date, Nov. 25, 1938. [Class 38 (iii)] [Also in Group XXXV] Running between limits. A D.C. motor M operating railway points W is normally supplied from a rectifier RX energized by a transformer TR, the motor being stopped by interrupting both the A.C. and D.C. circuits so that the rectifier is "dead" when not in active use. Reversal of a control switch L causes a relay WR to move its polarised contacts 35, 65, 75 to the right, contact 35 completing the A.C. circuit to the rectifier, and contacts 65, 75 completing the D.C, circuit to the motor and its field 86. The motor thereupon runs until point operated contacts 42, 44 interrupt the A.C. and D.C. circuits respectively. Should the A.C. supply fail, a relay PO drops its contacts to substitute a battery 10 for the rectifier RX, relay contacts 65, 75 and point operated contact 44 continue to function as before. Should the motor M be stalled by an obstruction in the points W, winding 20 of overload relay OR picks up the associated contacts, being retarded by the short circuit around winding 90 over contact 92 in its normal position. When contact 92 lifts, winding 90 is maintained over control switch L, and the circuit of relay WR is interrupted so that it drops its non-polarized contacts 32, 60 thereby interrupting the A.C. supply to the rectifier and the D.C. supply to the motor. Reversal of the switch L de-energizes winding 90 and allows the motor being controlled to run away from the obstruction.
Patent GB-891039-A (GB)
Title: Improvements in or relating to gas lubricated journal and journal bearing assembliesin pumps
Inventor: WHITLEY STANLEY
IPC: F01D25/22
Filed: 1959-05-22
Abstract: 891,039. Viscosity pumps. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. May 2, 1960 [May 22, 1959], No. 17494/59. Class 110 (1). [Also in Group XXXIV] In a viscosity pump, a journal 32 and a housing 33 have defined between them, at the central region of the assembly, interrupted annular grooves 34, and means for feeding gas to one end of the grooves and means for exhausting gas from the other end of the grooves are provided. The pump may have a stationary shaft with a rotatable housing or have a rotatable shaft in a stationary housing. The grooves, which are formed in the stationary member of the pump, are connected to an inlet pipe 40 via a manifold 39, pipes 38, passages 37 and holes 36 and are connected to an outlet pipe 45 via a manifold 44, pipes 43, passages 42 and holes 41. The assembly is totally enclosed in a easing 46, through which passes the inlet and outlet pipes 40, 45 and the housing 33 is rotated by a motor stator 51, having windings 52. In a modification an inlet port is provided in the casing 46 and the pipes 38, 40 and manifold 39 are removed. The localised points of increased pressure at lands 35 suppress whirl. Specification 888,155 is referred to.
Patent GB-914816-A (GB)
Title: Strain indicator
IPC: G01B11/16
Filed: 1960-05-18
Abstract: 914,816. Polarizing-apparatus. BUDD CO. May 18, 1960 [May 18, 1959], No. 17497/60. Class 97 (1). [Also in Group XIX] In a strain gauge for resolving tensile strain light passes through a polarizer 36, a quarterwave plate 34 and a birefrigent strata 24, 26 situated equidistant from and on opposite sides of the neutral plane of a strut 20. The light is reflected by a layer 28 and the polarizer 36 acts as a crossed analyzer. The strata 24, 26 may be combined birefringent compensators and forced birefringent test-pieces as described in Specification 912,760 to facilitate interpreting the results.
Patent GB-1166897-A (GB)
Title: Improved laminated glazing unit and method for producing same
IPC: B32B17/10
Filed: 1967-04-17
Abstract: 1,166,897. Laminated glass. LIBBEYOWENS-FORD CO. 17 April, 1967 [25 April, 1966], No. 17510/67. Heading B5N. [Also in Division C3] A laminated glass unit includes two sheets of glass bonded together with a transparent sheet comprising 100 g. of polyvinyl butyral, 30- 50 g. of a plasticizer therefor and 0À1-5 g. milliequivalents of mono-potassium maleate citraconate, malate, malonate, phthalate and/or citrate.
Patent GB-584402-A (GB)
Title: Improvements in and relating to fairings for aircraft landing gear
IPC: B64C25/16
Filed: 1944-09-14
Abstract: 584,402. Fairings for aircraft undercarriages. BLACKBURN AIRCRAFT, Ltd., and THARRATT, R. Sept. 14, 1944, No. 17676. [Class 4] A fairing for aircraft landing gear is formed of two parts, of which one is fixed to the undercarriage leg and serves partly to close the wheelreceiving recess, and the other part, which completes the closure of the recess, is slidable with respect to the first part and is connected by a link to a point on the aircraft offset from the pivotal point of the leg so that it is automatically extended to complete closure of the recess on retraction of the. leg, but slid back clear of the ground on extension thereof. As shown, an undercarriage leg pivoted at 1 to the aircraft carries a fixed fairing part 2 and a slidable fairing part 5 having side flanges 6 on which are mounted pairs of rollers 7 and 8 working in guides 4 provided in side flanges 3 'of the part 2. The rollers 7 are positioned at a greater distance from the outside surface of the part 5 than the rollers 8. The guides 4 are straight for the greater part of their length, but are curved inwardly at their lower ends 4<1>. Movement of the part 5 is effected by a pair of links 9 pivoted to the aircraft at 10. The links are adjustable in length by means of eye bolts and lock-nuts, and one or both may incorporate a spring accumulator to assist the final movement of the part 5 to close the recess. When the leg is extended, the rollers 7, 8 are witlidrawn along the straight portions of the guides 4 and the fairing part 5 overlies the part 2 at a slight angle thereto with its lower edge well clear of the ground. As the leg is retracted, the part 5 is extended until the rollers 7 ride up the curved portions 4<1> of the guides and move the part into a position where it is aligned with the part 2 and completes the closure of the recess. Specification 543,341 is referred to.
Patent GB-635090-A (GB)
Title: Electrical measuring system
IPC: G01R21/00
Filed: 1947-07-03
Abstract: 635,090. Power measurements. HAZELTINE CORPORATION. July 3, 1947, No. 17588, Convention date, July 5, 1946. [Class 37] The peak power of a pulse modulated H.F. carrier is measured by mixing with it an H.F. carrier inversely modulated, combining the two carriers and adjusting the amplitude of the second until the combined carriers form a substantially uniform amplitude-time characteristic, and measuring the power of either the combined carriers, or, where the original pulses are widely spaced, of the second carrier. Modulator 10, fed with pulses from 23, keys oscillators 11, 12 inversely, and the modulated carriers are mixed and applied to cathoderay tube 20 over rectifier 21 ; the amplitude of oscillator 12 is adjusted until the input to the detector 21 is substantially of constant amplitude, and the power is measured at 22 or 221. The mixing network may be as disclosed in Specification 628,046, [Group XL (c)], Fig. 3, not shown.
Patent GB-431959-A (GB)
Title: A method of storing and transporting light-sensitive material for use in television systems
IPC: H04N3/36
Filed: 1934-06-14
Abstract: 431,959. Television. FERNSEH AKT.-GES., Goerzallee, Zehlendorf, Berlin. June 14, 1934, No. 17685. Convention date, June 15, 1933. Addition to 428,227. [Class 40 (iii)] In a system in which an intermediate photographic record is produced on a light-sensitive layer which is constantly renewed on a supporting film, the light-sensitive emulsion is stored or transported in a device having a low heat permeability, such as a Dewar flash. The residual heat permeability is compensated by heating devices in the container.
Patent GB-919714-A (GB)
Title: Hydraulic control system for a fluid actuated motor
IPC: F15B21/047
Filed: 1960-05-19
Abstract: 919,714. Valves; hydraulic apparatus. CESSNA AIRCRAFT CO. May 19, 1960 [June 25, 1959], No. 17722/60. Classes 69 (2) and 135. An hydraulic control system for a fluid-actuated motor 35, such as for the operation of a power shovel 45, comprises two circuit control passages 25, 26 connected to opposite ends of the motor, and a reversing spool 21 having two main operative positions in which the two circuit control passages are selectively connected to a supply passage 22, 23, including a fluid-transfer passage 27 connected to the reversing valve such that when the circuit control passage 26 is connected to the supply passage the circuit control passage 25 is connected to the transfer passage, and including a first independent valve means 42 providing fluid flow from the transfer passage into the circuit control passage 26 when the pressure in that passage falls below the pressure in the transfer passage, and when the reversing spool is in a first main operative position to connect the passage 26 with the supply passage 23 and to connect the circuit control passage 25 with the transfer passage, and second independent valve means 39 providing fluid flow from the transfer passage to a return passage when the reversing spool is in the first main operative position and when the pressure differential between the transfer passage and the return passage exceeds the pressure differential at which the first independent valve means opens. The supply passage 23 is connected via passages 17, 18 to a pump 12 and the return passage 28 connected to a reservoir 13 via pipe 30. In operation, when the shovel 45 is required to be lowered, the spool 21 is moved from the neutral position shown to the left and thereby permits fluid to flow from the supply passage 23 into the control passage 26 and then, via pipe 34, to the inner end of the ram 46. The ram then begins to drop under its own weight and, in order to prevent cavitation, the fluid on the other side of the ram is forced via pipe 33, control passage 25, transfer passage 27, ports 44 in the spool 21, and valve 42 into the control passage 26 in order to supplement the fluid being supplied by the pump. When the pressure in the latter passage increases the valve 42 is gradually closed and the pressure then developed in the transfer passage 27 opens the spring-loaded relief valve 39 so that the excess fluid is returned via passage 28 to the reservoir. To raise the shovel, the spool is moved to the right and the fluid then passes from the supply passage 22 into the passage 25 and thence to the cylinder; the fluid on the other side of the ram 46 is exhausted via passages 26, 27, 28 directly to the reservoir. Specification 918,451 is referred to.
Patent GB-1101485-A (GB)
Title: A method of producing filaments, fibres, films and textile materials from regenerated cellulose
Inventor: WEBER RAINER THOMAS PAUL
IPC: C02F1/52
Filed: 1965-04-27
Abstract: Fabrics or fleeces made from regenerated cellulose filaments or fibres made by (1) the process of the Parent Specification, the salt being of Fe or Pb, are thereafter (2) reacted in the presence of OH- ions with a salt of a heavy metal having greater affinity for S= in alkaline environment than Fe or Pb; and (3) the Fe or Pb hydroxides are then reconverted by S= to the sulphide; these reactions being repeated any number of times. In step (1) viscose containing a dissolved compound of As or Sb is extruded into a bath containing H2SO4, Na2SO4, and optionally ZnSO4; the filaments or fibres are then treated with aqueous Fe or Pb salts which react with the As or Sb sulphides to form Fe or Pb sulphides.  With PbS, the salt in reaction (2) may be of Hg, Ag or Cu whereas with FeS, salts of Pb, Sn, Cd, Co, Ni and Zn may also be used.  Preferably the salt in step (2) is of a metal with an amphoteric hydroxide, e.g. Cd, Zn, Cu or Ag.  The reaction (2) may be performed in ammoniacal solution, the salts used being ammonium or amine complexes.  Strong base/weak acid buffer salts, e.g. sodium acetate, may be present, and the heavy metal salts may be acetates.  In step (3), the source of S= may be H2S gas or sulphide solutions.  The heavy-metal content of the treated material may be more than 50% by weight.  The textiles obtained, which are water-repellent, may be used for protective clothing for high energy radiation.
Patent GB-934601-A (GB)
Title: Improvements in or relating to extrusion or injection moulding machines and similar appliances, and heating units of such appliances
Inventor: CRASKE MAURICE ALLAN
IPC: B29C48/03
Filed: 1958-06-04
Abstract: 934,601. Induction heating units. BEANWY ELECTRIC Ltd. Sept. 4, 1959 [June 4, 1958], No. 17779/58. Class 39 (3). An electric induction heating unit for surrounding a metal cylinder 6, e.g. in an extrusion or injection moulding machine, containing a substance to be heated, comprises an annular magnetizable casing formed from two or more members 1 and 2 joined by lugs 5 and supporting at least two diametrically opposed polepieces 3 provided with inductor windings 4, the polepieces 3 being in firm contact with the cylinder 6. Inlet and outlet means 8 and 11 or 9, respectively, are provided for the passage of air or other cooling fluid through the casing. In a modification (Fig. 4, not shown) the lugs 5 extend inwardly from the casing to abut the cylinder 6 and are provided with ports to allow the cooling fluid to pass from one half of the casing to the other. Specification 828,083 is referred to.
Patent GB-250074-A (GB)
Title: Improvements in and relating to signal devices for motor cars and other road vehicles
IPC: B60Q1/34
Filed: 1925-07-11
Abstract: 250,074. McWilliam, D. June 11, 1925. Road-traffic signals on vehicles. - The improved signal device comprises a switch housing the ends of flexible wire controls which are detachably coupled to the switch lever so as to move therewith to operate the signal arms, the switch simultaneously actuating a contact maker for the electric lamp circuit, the lamps directing light on to both sides of the signal arm raised. A sheathing 1 of U-shaped section horizontally has brackets 12, 7, and 14 fixed thereto, the brackets 12, 14 supporting a tube 8 for the wire controls 23. The signal arms 2, 3 are pivoted to the upper end of the housing 1 and have portions beyond the pivot connected by links to the wires 23 in their flexible armour 24. There is an additional housing 25 carrying two lamps 28 directing light on to both sides of the arm raised. In a boss 42 of a baseplate 37 is a member 45 which may be depressed by a button 44 but which is pressed upwardly by a spring 43 and by a strip of brass 49 making contact at 47 with a lead 48 in the lamp circuit only when this member 45 is raised. Freely surrounding the boss 42 is a plate 51 having a recess 60 and a grooved edge 53 and fastened to a member 58 having a handle 57. The whole, except the handle, is surrounded by a cover. The wire controls 23 pass round the groove 53 and are held by members 54 at their ends so that as the handle is turned one wire 23 is pulled to raise a signal arm and after the member 51 has rotated slightly the member 45 rises into the recess 60 and locks the signal arm in an horizontal position. To release the arm the button 44 is depressed to free the member 45, and the parts are returned to normal by the action of the signal arm spring.
Patent GB-968741-A (GB)
Title: Probe apparatus for use in the ultrasonic testing of metals and other substances
Inventor: JARVIS JOHN ALBERT FRANCIS
IPC: G01N29/28
Filed: 1962-05-09
Abstract: 968,741. Wave couplings; piezo-electric instruments. MATERIALS & METHODS Ltd. May 6, 1963 [May 9, 1962], No. 17796/62. Heading H4J. A piezo-electric ultrasonic probe 2A is mounted in a tank 1 of oil or other liquid, the level of the liquid being maintained above the probe by means of a pump 3 and an overflow and drainage valve 5.
Patent GB-1035164-A (GB)
Title: Pentaerythritol polyglycols
Inventor: KARABINOS JOSEPH VINCENT
Filed: 1963-05-06
Abstract: Pentaerythritol polyglycols are prepared by heating a solution of pentaerythritol in the dimethyl ether of diethylene glycol to its boiling point under atmospheric pressure while purging with an inert gas, introducing ethylene oxide into the solution while continuing the inert gas purge and maintaining the solution substantially at its boiling point, and subsequently removing the dimethyl ether of diethylene glycol by distillation.  In a preferred embodiment, 4 to 5 moles of ethylene oxide are employed, the resulting adduct is heated to a temperature of 165 DEG  C. while purging with an inert gas and ethylene oxide is introduced into the liquid adduct while the adduct is maintained at a temperature of 165 DEG  C. under continued inert gas purge.
Patent GB-234322-A (GB)
Title: Improvements in vacuum feeding apparatus of liquid hydrocarbons in explosion motors
IPC: F02M37/02
Filed: 1924-07-28
Abstract: 234,322. Sacco, A. P. July 28, 1924. Vacuum apparatus.-In suction feed apparatus supplying petrol &c. to an internal-combustion engine, a float 16 in an inner chamber 2 actuates a central guiding-rod 14 connected to a weighted, articulated parallelogram 25, 27, which through tappets 22, 23, 24 and an enlarged head 29 actuates a disc, suction-controlling valve 21 and a ball, air-controlling valve 31. When the chamber 2 is full and is put into communication with the atmosphere, the fuel passes through a pair of connected lift valves 9 secured on opposed arms of different length into an outer chamber 1 which communicates with the carburettor through a control cock. 7.
Patent GB-201371-A (GB)
Title: Improvements in or relating to stops or gauges for use on brush making machines
IPC: A46D3/06
Filed: 1922-06-30
Abstract: 201,371. Shipley, A. H., and Berry, A. B. June 30, 1922. Drilling brush stocks.-A stop for limiting the depth of hole in a brush drilling and filling machine is adapted to adjust itself automatically to the angle at which the stock is presented to the tool, so that the depth of hole drilled will be constant. The stop consists of two fingers 13 carried by bolts 12 supported between pairs of racks 8 which are connected by loose pinions 10, so that if one finger meets an inclined surface before the other it will be retracted, rotate the pinions, and advance the other finger to meet the surface. The racks and pinions are carried in slides 7 secured to a ring 1 which is screwed on the neck 2 of the headstock for .adjusting the depth of hole drilled, locking being effected by a bolt 4. The finger may be rotated about the bolts 12 to suit drills of different diameters, and are locked by nuts 15.
Patent GB-133498-A (GB)
Title: Mineral Selective and Frothing Agent and Processes or Methods of Producing and Using the same.
IPC: B03D1/001
Filed: 1918-11-04
Abstract: 133,498. Marks, E. C. R., (Luckenbach Processes, Inc.). Nov. 4, 1918. Surface-tension separating processes. - An agent for use in concentrating ores by flotation is obtained from greasewood. The plant is macerated, and treated preferably with caustic soda, or with water or acid, or with steam followed by alkali. The agent may be used alone or with a mineral, vegetable, or animal oil, such as oleic acid, or a solution of rubber such as is described in Specification 133,277.
Patent GB-561762-A (GB)
Title: Process for improving the jellifying properties of carob gum
IPC: A23L29/238
Filed: 1942-12-18
Abstract: Carob gum is treated with solutions or suspensions of bases or alkaline salts, e.g. sodium or potassium hydroxide, in an organic solvent, e.g. methyl or ethyl alcohol, to improve its jellifying properties for use in jam or as a bacteria culture medium.  An organic or inorganic salt of calcium or iron may be used as catalyst, and the gum may be boiled, washed in alcohol and dried in air.