baber/WOPTO huggingface dataset:
Patent GB-1401457-A (GB)
Title: Muting circuits
IPC: H03K17/60
Filed: 1972-12-07
Abstract: 1401457 Transistor amplifying circuits SONY CORP 7 Dec 1972 [17 Dec 1971] 56575/72 Heading H3T A transistor preamplifier circuit for audio use is provided with means for preventing a "plop" occurring on switching on and off. The preamplifier comprises long-tailed pair transistors 20, 22 with the collector to emitter path of transistor 30 as common emitter impedance. A complementary transistor 36 is driven from the collector of transistor 22 and has the collector to emitter path of transistor 40 as collector load, and is coupled to output terminal 46 via emitter follower 42, which has the collector to emitter path of transistor 44 as emitter load. The unit 12 comprises an integrated circuit, output terminal 46 being coupled by an external capacitor 48 to power amplifier 14. Connected across the input to amplifier 14 is the collector to emitter path of a muting transistor 80, the base of which is connected to point X between series-connected resistors 72, 74. The remote end of resistor 74 is connected to the join of capacitor 84 and diode 82, which are connected in series across the supply. The remote end of resistor 72 is connected to the collector of transistor 62, the base of which is based from the voltage across capacitor 68, which is charged over parallelconnected resistor 64 and diode 66 from the voltage across resistor 70. Resistor 70 is connected to the point P in a chain of diodes D1-D5 which, with resistor R provide base bias for the transistors 30, 40, 44. When the circuit is first switched on, by means of switch 18, the capacitor 68 takes time to charge up, during which transistor 62 is non-conductive and transistor 80 biased over diode 82 to be conductive, so short-circuiting the input to amplifier 14. When capacitor 68 is charged, transistor 62 becomes conductive, so reducing the potential of point X that transistor 80 becomes non-conductive. On switching off, capacitor 68 is rapidly discharged over resistor 64 and resistor 70 and diodes D3-D5 so that transistor 62 rapidly becomes non-conductive: transistor 80 is then biased conductive by the charge stored on capacitor 84.
Patent GB-1191462-A (GB)
Title: Bicyclobutanes, Polybicyclobutanes and the preparation thereof
IPC: C25B3/25
Filed: 1966-12-20
Abstract: 1,191,462. Bicyclo butanes. UNION CARBIDE CORP. 20 Dec., 1966 [21 Dec., 1965], No. 57026/66. Heading C2C. [Also in Divisions C3, C5 and C7] The invention relates to a process for preparing bicyclo butanes having the formula wherein R and R 1  are hydrogen, a C 1 -C 10  alkyl group; an ether group of formula -OR where R is a C 1 -C 10  alkyl group; an ester group of formula -O-COR where R is a C 1 -C 10  alkyl group, a C 1 -C 10  alkyl group substituted by a group which is inert during the process; or is a nitrile group and in addition R 1  can be halogen which comprises electrolytically reducing a cyclobutane having the formula wherein R and R 1  are as defined above and X is halogen, by passing a direct current through a solution of the cyclobutane in a solvent containing an electrolyte at a voltage sufficient to reduce the carbon-halogen bonds thereof, which reduction results in the evolution of halogen and the formation of a bicyclobutane, the solvent not being reduced at a more negative potential than that required to reduce the carbon-halogen bonds. The invention also relates to bicyclo butanes of the above general formula in which R is hydrogen or an alkyl group having 1 to 10 carbon atoms and R 1  is a halogen or an alkyl group having from 2 to 10 carbon atoms with the proviso that R is an alkyl group when R 1  is halogen and R is hydrogen when R 1  is an alkyl group and also in which one R 1  is H and the other R 1  is OCOR group, CN, CL, OR and R is an alkyl group having 1 to 10 carbon atoms. Compound claimed per se 2,2,4,4 - tetramethyl - 1,3 - dichlorobicyclo- [1.1.0]-butane.
Patent GB-1397050-A (GB)
Title: Splitphase signal detector
IPC: H04W84/02
Filed: 1973-12-11
Abstract: 1397050 Decoding PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES 11 Dec 1973 [14 Dec 1972] 57358/73 Heading H4P A detector for receiving a split level logic signal, i.e. one in which a logic "1" is represented by a change from a first level to a second during a bit period and a logic "0" is represented by a change from the second level to the first during a bit period, comprises: a signal input 1 connected to the input of an amplifier 3 via a capacitor 11; a switch 6 connected between the input and output of the amplifier 3 and controlled by a clock signal applied to input 2; and a bi-stable circuit 9 which is set or reset by the clock signal in accordance with the output from the amplifier 3. During the first half of each clock period, switch 6 is closed and the output of the amplifier is equal to its input and capacitor 11 is charged by the input signal. During the second half of the clock signal, switch 6 is open and, if the amplifier gain is high, the amplifier is driven to full positive or negative output, depending on whether the input is a "1" or a "0". This output is applied to the D input of bi-stable 9 so that its Q output takes up the input level each time it is clocked.
Patent GB-1121048-A (GB)
Title: Vehicle window demisting
Inventor: CHAPMAN ARTHUR REGINALD
IPC: B60H1/24
Filed: 1966-12-22
Abstract: 1,121,048. Demisting vehicle windows. FORD MOTOR CO. 22 Dec., 1966, No. 57412/66. Heading E1R. The passenger compartment of a motor vehicle has an air inlet or inlets (2a, 2b, 2c Fig. 1) near the front of the vehicle so that air can be admitted and if desired heated by the engine generated heat and an air outlet 7 located for example in the centre of e.g. the rear window comprising the outer glass pane 3 mounted between two rear roof pillars 4 and an inner pane 6 of e.g. Perspex (Registered Trade Mark) consisting of two separate portions with the gap therebetween or of one whole pane with the aperture provided therein, the pane 6 being spaced from the pane 3, so that air from the inlets, after passing through the passenger compartment is caused to pass through the outlet 7 and between the panes 3 and 6 and out through outlets in the pillars 4.
Patent GB-1447890-A (GB)
Title: Apparatus and method for positionally controlled document printing
IPC: G01D9/00
Filed: 1973-12-12
Abstract: 1447890 Printers MEAD CORP 12 Dec 1973 [18 Dec 1972] 57639/73 Heading G4H In a printer in which a document is advanced past a row of marking elements, marking control signals are directed to a group of the elements selected, as disclosed, according to the sensed transverse position of the document. In this way, a band of information is printed a fixed distance from the edge of the document despite transverse document positioning errors. In one embodiment, the band of information is two lines of alphanumeric characters, each character built up as a matrix of dots, the marking elements being, e.g. ink drop jets. The elements are controlled by a shift register loaded with zeroes and, at a variable time during the loading, with a column of each of the two characters currently being printed. The variable time is obtained by shifting out the contents of a margin control shift register loaded from a column of documentedge-sensing photo-cells. The two character columns come from a line control shift register into which they were loaded in turn from columns within diode character matrices selected according to the characters and column required. The rate at which successive columns are loaded and printed is controlled by a tachometer responsive to document speed. Alternatively, a common timing arrangement could control both the rate and the speed. In a modified embodiment, graphic information from a tape is similarly loaded and printed.
Patent GB-1222651-A (GB)
Title: Improvements relating to articles which include carbon
Inventor: ROLINSON FREDERICK JOHN
IPC: C04B35/18
Filed: 1966-12-30
Abstract: 1,222,651. Moulding processes and moulds; continuous casting. FORDATH Ltd. 15 March, 1968 [30 Dec., 1966], No. 58257/66. Heading B3F. [Also in Divisions Cl and C3] A casting die part (e.g. for a die casting machine), mould, mould part, feeder head, sleeve, slab, or tile for covering a poured ingot and possibly porous, e.g. for venting, comprises a filler material F bonded by a carbon skeleton, made by coating F with a resin R, moulding, and carbonizing R by heating at 800-850‹ C. in an atmosphere containing hydrocarbon vapour V which is cracked with the deposition of carbon in the pores of the material. F is refractory and does not undergo a physical or chemical change when heated to 850‹ C. F and V are preferably free of iron. V may be benzene contained in an atmosphere of N 2 . The moulding may be performed by hand-ramming. R may be a phenolic novolac, a resole, a furfuryl-alcohol/formaldehyde polymer, a furfurylated phenol-formaldehyde, a urea-formaldehyde, or a urethane resin. R may be a phenolic resin mixed with a di-isocyanate; curing may be effected by passing a mixture of air and triethylamine into the mould. The moulded article may be impregnated with a resin solution or furfuryl alcohol before carbonization, thus increasing the thermal conductivity and strength, useful for continuous-casting dies. F may be particulate, e.g. ZrO 2  and/or Al silicate with or without graphite. F may include a fibrous refractory, e.g. asbestos, Al 2 O 3 , slag wool or Al silicate.
Patent GB-1214510-A (GB)
Title: Improvements in or relating to washing machines
Inventor: STRONG HAMILTON GEORGE HENRY
IPC: D06F37/42
Filed: 1967-12-23
Abstract: 1,214,510. Machinery safety devices. WILKINS & MITCHELL Ltd. 28 Feb., 1969 [23 Dec., 1967], No. 58554/67. Heading F2J. In a washing machine having a door 15 providing access to a washing compartment 14 and a timer mechanism comprising a shaft 19 which rotates during a washing cycle of the machine, there being one or more predetermined position or positions in which it stops the machine, a disc 20 is provided on the shaft 19 and prevents opening of the door 15 by means of a manually operable catch mechanism except when the timer mechanism is in the predetermined position or one of the predetermined positions. The catch mechanism comprises a draw bar 43 suspended from an arm 40 of a bell-crank lever 38 and engaging a door catch 46. The draw bar 43 may be raised by pressing a button 39a on bell-crank lever 38 provided the machine is in a stopped condition. In this condition a notch 23 in disc 20 allows an end portion 27 of a U- shaped member 26 to pivot under the influence of a spring 34, thereby moving member 26 out of the path of arm 40 of lever 38. More than one notch 23 may be provided in disc 20.
Patent GB-1417880-A (GB)
Title: Overhead tracks for transporting goods
IPC: E01B25/24
Filed: 1973-12-21
Abstract: 1417880 Elevated railways; tracks J E MAZUYER 21 Dec 1973 [3 Jan 1973 2 March 1973] 59396/73 Heading B7L An overhead railway track comprises opposed rails 1 of generally inverted-U cross-section, the top face (web) of each rail acting as the track for a load trolley roller 12 running on bearing 13 on an axle 14, each rail 1 having an outer arm 2 which is fixed into a slot 8 in a support casing 4 securable at 5 to a beam, the arm 2 being gripped against a contacting part 7 of the casing 4 at any position along the length of the rail 1 by a screw 9 passing through the casing 4. The other arm 3 has a lip 10 on its inner face to receive a strip 11 whereby the rail can be joined to the next rail. The axle 14 carries a load suspension system 15 on which are mounted rollers 16 for lateral guidance of a trolley. In another embodiment, Fig. 3 (not shown) the rail arm 3 has a lower chamfered portion and the inner side of that arm is also inclined in the same direction as the chamfer to form a thickened lower arm portion. The chamfers on opposed rails form a flared opening to permit swinging of the suspension system 15. The inner arm of the rail also has a rib for co-operating with a rail connection member piece as described with reference to Figs. 4 and 5 (not shown).
Patent GB-1291950-A (GB)
Title: Apparatus for providing air curtains
IPC: F24F9/00
Filed: 1970-12-22
Abstract: 1291950 Air curtains DISCO ENG Inc 22 Dec 1970 [12 Feb 1970] 60822/70 Heading F4V An air curtain is provided across an access opening 16 to a building 12, using air from within and/or from outside the building, by apparatus 10 comprising an enclosure 24 communicating through openings 49 with vertical ducts 28, 30 having discharge slots (32, Fig. 7) extending the entire length of the ducts. In use air from within and/or from outside the building is drawn into the enclosure 24, by means of blowers (102, Fig. 6), through inlet assemblies 82, 84 containing adjustable louvers (88, Fig. 4) and a removable filter element (100), and is passed over finned heat exchange coil assemblies 56 before being discharged through the slots 32 to form the air curtain. The coil assemblies 56 may be used to either heat or cool the air as required. A louvered partition (112, Figs. 8 and 9, not shown) may be interposed diagonally between the coil assemblies (56) to separata the respective air flows entering through inlets 82 and 84 if required.
Patent GB-654193-A (GB)
IPC: F16D67/04
Abstract: 654,193. Brakes. CLEVELAND PUNCH & SHEAR WORKS CO. July 22, 1948, No. 19646. Convention date, Oct. 6, 1947. [Class 103 (i)] [Also in Group XXIV] A clutch and brake mechanism includes a clutching and braking member 9 provided with a web formed of two portions 48, 49 adjustably secured together and respectively rigid with arcuate flanges 43, 44 extending in opposite directions from the web, friction linings 45, 451 being secured to the flanges. The operative part of the clutch and brake mechanism, Fig. 1 (not shown), is similar to that described in Specification 653,661, the flange 44 carrying bearings 16 for the operating eccentric thereof. The portions 48, 49 are secured together, so as to be radially movable for clutch and brake adjustment, by members 55 each eccentrically sleeved on a bolt 52 in the portion 49, and bearing in a bore in the portion 48. Each member 55 is locked in adjusted position by nuts on the bolt 52 and additionally and positively, by a pin 60 coacting with a bore in the portion 48 and simultaneously with one of a number of holes 58 in a flange 57 of the member 55.
Patent GB-2029105-A (GB)
Title: Electric contact array for telephone keypad
IPC: H01H1/18
Filed: 1978-08-01
Abstract: The invention relates to electrical contacts of the rod or strip type, especially (but not solely) for use in telephone sets of the push-button type. The contact-making end of a contact spring 1 has attached to or integral with it a portion 3 which extends towards the fixed end of the contact. The portion 3 which may be struck from the strip, has a curved contact-making portion which gives a wiping action with a stationary contact 2. <IMAGE>
Patent GB-2002437-A (GB)
Title: Improvements in handling bricks in bricklaying
IPC: E04G21/16
Filed: 1978-09-08
Abstract: A method for building a structure from building units 1 which because of their dimensions or their dimensions and their weight are difficult repeatedly to pick up and place or lay with one hand, wherein building units which are so formed as to be engagable by a hand lifting tool 9 in such a way that on lifting the unit with the tool the weight of the unit serves to assist in locking the tool to the unit to prevent relative movement between the tool and the unit enabling the unit, when the tool is held in one hand, to be brought to a desired position for buttering with mortar, are successively engaged with a lifting tool, lifted, buttered and laid. The tool may engage an insert 4 or an aperture or projection in the building unit.   <IMAGE>
Patent GB-2031715-A (GB)
Title: Adjustable brackets
IPC: A47B57/56
Filed: 1978-10-16
Abstract: A bracket comprises a generally U-shaped channel base portion, the arms of the base embracing and being rigidly secured to the sides of a channel sectioned arm extending substantially at right-angles thereto, the base having a rearwardly extending clevis tag formed therein to engage within the channel of a supporting rail, and being provided with at least one bore into which fixing means may be introduced adjustably but firmly to retain said bracket in engagement with said rail. <IMAGE>
Patent GB-2007977-A (GB)
Title: Treating plant viruses
IPC: A01N47/28
Filed: 1978-11-06
Abstract: The present invention provides an agent for combating plant viruses, comprising at least one thiourea derivative of the general formula:-   <IMAGE> wherein R1, R2, R3, and/or R4 are hydrogen atoms or hydroxyl, carboxy, amino and/or alkoxy groups, as well as substituted alkyl, alkenyl, aryl, aralkyl and/or cycloalkyl radicals and wherein R4 can also be a ureido, thioureido, ureidomethyl or thioureidomethyl radical optionally substituted by alkyl, alkenyl or aryl radicals, as well as a  beta -naphthyl and/or  beta -pyridyl radical, in admixture with a solid or liquid diluent or carrier. R1 and R2 or R3 and R4 may also jointly form a ring. The present invention also provides a method of treating plant viruses, as well as plants and plant material treated with a thiourea derivative of the above-given general formula.
Patent GB-2037783-A (GB)
Title: Method of producing 1,4-cis-polyisoprene
IPC: C08F136/08
Filed: 1978-12-29
Abstract: 1,4-cis-polyisoprene is produced by polymerization of isoprene in an inert organic solvent at a temperature of from -10 to +100 DEG C in the presence of a catalytic system including the components: (A) titanium tetrachloride, (B) an organoaluminium compound, and (C) an ether or amine wherein the organoaluminium compound is a compound having an elemental unit of the formula   <IMAGE>  wherein R=   <IMAGE> or   <IMAGE> or a compound of the formula AIR3(II), wherein R is a polyunsaturated aliphatic hydrocarbon C8-C25 radical or an unsaturated cycloaliphatic hydrocarbon C8-C25 radical with a double bond in the cycle.
Patent GB-2016563-A (GB)
Title: A vibratory plate compactor capable of reversing its direction of advance
IPC: E02D3/074
Filed: 1979-01-22
Abstract: A vibratory plate compactor capable of reversing its direction of advance has a vibrator (2) with two contra- rotating unbalanced shafts (15, 19) one of which is adjustable in phase relative to the other, a drive engine or motor (4) coupled to one of the shafts (15) through a belt transmission (5) to drive the latter in one rotational direction, clutch means for coupling the said one unbalanced shaft to the other unbalanced shaft, and selector means (8) for selecting two different settings of the clutch means in which the said other shaft is coupled to the said one shaft in different relative angular positions to produce a resultant direction of vibration having a forward or a rearward component respectively, the clutch means including a unidirectional coupling which permits the said other shaft to over-run relative to the clutch means in one direction of rotation. <IMAGE>
Patent GB-2019845-A (GB)
Title: Catalytic epoxidation of olefines
IPC: C07D301/12
Filed: 1979-04-02
Abstract: A process for the catalytic epoxidation of olefines by means of hydrogen peroxide, in which an olefine and hydrogen peroxide are put in contact in a solvent in the presence of a catalytic quantity of boron or a mineral or organic derivative of boron or a mixture of the latter at a temperature between 120 DEG C and 200 DEG C.
Patent GB-2019731-A (GB)
Title: Apparatus for macerating agricultural products to enhance drying
IPC: A01D43/10
Filed: 1979-04-27
Abstract: Apparatus for macerating the products comprises two parallel cylindrical rollers 17, 18 rotating in opposite directions at different speeds between which the product pass. The macerated products are then formed into a mat, if desired, by conveying the products between conveyor belts 24, 25 to a matting roller 27 adjacent to one of the conveyor belts. The thus formed mat of macerated material permits drying of the products within a few hours.   <IMAGE>
Patent GB-2097863-A (GB)
Title: Variable air inlet for gas turbine engine
IPC: B64D33/02
Filed: 1979-07-05
Abstract: A variable air inlet, particularly a two-dimensional oblique-thrust diffuser for a gas-turbine jet propulsion unit for driving a high- performance aircraft, with an upper ramp 1a on a spearhead 1 and with a lower scoop-shaped air interception lip 2 articulated to the front of the air inlet floor 3, and pivotable about a transverse shaft 4, is characterized by the fact that the entire pivoting range of the air interception lip 2 is functionally subdivided into a lower subsonic-transsonic operating zone A and an upper supersonic operating zone B, of a narrower angle. The adjusting angle  delta A of the air interception lip 2 in the lower zone A is controlled in accordance with the flight Mach numbers M between 0 and about 1.3 Mach and also the incidence angle  alpha  of the aircraft, in accordance with the aquation  delta A=f (1 DIVIDED M, alpha ), and that the adjusting angle  delta B of the air interception lip 2 in the upper zone B is regulated in accordance with a variable required value  eta B, as a ratio between the static pressure PSB predominating above, the upper ramp 1a and the overall pressure pt of the outer flow in such a way as to ensure the supply of the air throughput required for the propulsion unit, in order to obtain, in supersonic flight, the optimum thrust. <IMAGE>
Patent GB-2028400-A (GB)
Title: Production from and Servicing of Wells
IPC: E21B43/017
Filed: 1979-08-13
Abstract: A system selectively permitting production from and servicing of a plurality of wells 12, 12a, 12b has a common production flowline 13 and at least two service lines 14, 15. The production flowline 13 and service flowlines 14, 15 are connected in parallel with each well. A production tubing string, contained within each well, can communicate with or be isolated from the common production flowline 13. The service lines 14, 15 can be used selectively to direct a tool string or treating fluid to a production tubing string in each well. While one well is receiving treating fluid from the service lines 14, 15, or pump down operations are being performed in it, the remaining wells in the system can continue to produce through the common production flowline 13. A method of servicing wells is also disclosed. <IMAGE>
Patent GB-2044982-A (GB)
Title: Chemical decontamination of reactor parts
IPC: B08B3/08
Filed: 1979-10-11
Abstract: Structural or component parts, for example of a nuclear reactor, are decontaminated from radioactive contamination by a preliminary oxidising treatment with an alkaline permanganate solution for approximately 1 hour and are then exposed for 5-20 hours to an inhibited citrate-oxalate decontamination solution. Subsequently, an after- treatment is carried out with a citric acid-hydrogen peroxide solution which contains suspendable inert material such as cellulose fibres or sponge rubber balls.
Patent GB-2038306-A (GB)
Title: Waste water processor
IPC: C02F3/08
Filed: 1979-10-31
Abstract: A waste water processor for sewage comprises a pair of nests 4, 4' which can be alternately immersed in fluid to be treated and exposed to air to foster consumption of pollutants in the water by a layer of microbial material on the surfaces of the nests. <IMAGE>
Patent GB-2060754-A (GB)
Title: A cover for a servicing hole in an automotive service station
IPC: E06B9/11
Filed: 1979-12-17
Abstract: A band 18 of pivotably connected support members 20, the ends of which are supported on the longitudinal hole edges, is displaceable longitudinally in opposite directions by at least one motor drive to open and close the servicing hole 10. During the opening movement, the band 18 is moved downwardly at one end of the hole. In order to avoid a broadening of this region of the hole 10, the support members 20 are telescopic and are compressed to a reduced length in this region. <IMAGE>