baber/WOPTO huggingface dataset:
Patent GB-1260967-A (GB)
Title: Improvements in or relating to triggerable pulse generators
IPC: H03K3/57
Filed: 1969-11-15
Abstract: 1,260,967. Transistor pulse circuits. MARCONI CO. Ltd. 3 Sept., 1970 [15 Nov., 1969], No. 56041/69. Heading H3T. A triggerable pulse generator of the kind wherein a series sequence of electronic switches SW1 ... SWn requiring "priming" are connected via a "delay device" SR to a pulse forming network PN which is energized from a D.C. supply comprises, across each of the switches, a shunt circuit so dimensioned as to provide, for its associated switch, substantially the correct "priming" current. A load, e.g. a magnetron, is connected at U. "Priming" consists in allowing a small initial current to flow through the switches, which are thyristors, before the main current. In the prior art (Fig. 1, not shown) the delay device, which is a saturable reactor SR, alone was used, but this detracted from the energy available for the main pulse. In the invention, this energy is supplied by the shunt circuits. As shown, each such circuit comprises a capacitor C and resistors R1, which determine the amplitude of the priming current, and R3, which are selected to provide correct voltage distribution across the chain of thyristors. The first and last shunt circuits also include an inductor L preferably shunted by a resistor R2, which is selected to provide correct dynamic voltage sharing; in Fig. 3 (not shown), every shunt circuit has an L and R2. Any of the elements in the shunt circuits may be adjustable. L, C and R1 constitute damped series resonant circuits, whose time constants are chosen so that a quarter cycle of oscillation occurs in the time taken for SR to saturate. In Fig. 6 (not shown) each shunt circuit comprises a pulse forming network (PNI) consisting of an inductance with distributed capacitance in series with a resistor (R0) and shunted by a further resistor (R3). Dynamic voltage sharing is provided by the pulse forming networks and the R3S control the D.C. voltage distribution. Fig. 7 (not shown) is similar to Fig. 6 but a diode is connected across each series resistor (R0). In this case the time constant of each shunt circuit is made equal to the duration of the priming current plus the main pulse. At the end of the priming pulse the pulse forming networks (PNI) reverse polarity and assist the extraction of hole charge from the thyristors.
Patent GB-1246529-A (GB)
Title: Stabilization of pentachlorophenol
IPC: C07C37/88
Filed: 1969-11-18
Abstract: 1,246,529. Stabilizing of pentachlorophenol. MONSANTO CO. 18 Nov., 1969 [19 Nov., 1968], No. 56295/69. Heading C2C. Pentachlorophenol is stabilized by adding thereinto a stabilizing amount of a hydroxybenzaldehyde. Preferably the stabilizer is present in an amount from 0À15-0À50% by wt. of pentachlorophenol.
Patent GB-1255163-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/63
Filed: 1968-11-27
Abstract: 1,255,163. Mowers. TEXAS INDUSTRIES Inc. 27 Nov., 1968 [4 Dec., 1967], No. 56345/ 68. Heading A1F. [Also in Division B7] Two rotary scythe mowers 65, 66, are mounted on a tractor 64 at the front and at the side respectively, a collecting trough 88 and a worm conveyor 87 being provided behind the side mower 65 to displace the material mown by it and add it to the swath left by the front mower between the wheels of the tractor. The single swath so formed is collected by a pick-up trailer 105 towed behind the tractor. Ground engaging supports 74 are fitted via adjusting screws 75 at each end of the horizontal box-section beam 67 of each mower and the two rotating drums 69 are mounted below the beam 67 by their vertical shafts 68. The front mower 66 is connected to the tractor 64 by links 80 and driven through the universally mounted telescopic shaft 82 from the motor driven shaft 83 of the tractor. The side mower 65 is hinged at 91 to a support 92 fixed to the tractor and can be raised to a vertical position by a hydraulic ram 106. The side mower is driven from shaft 83 via sprockets and chains. The worm conveyor 87, driven via chain 100 from mower drive shaft 73, is mounted at its ends in plates 86 which are attached to the ends of beam 67 and also carry a collecting plate 88.
Patent GB-1332956-A (GB)
Title: Sanitary towels
IPC: A61L15/28
Filed: 1971-12-06
Abstract: 1332956 Sanitary towels ETABS RUBY 6 Dec 1971 [23 Dec 1970] 56552/71 Heading A5R A sanitary towel comprises a flexible absorbent mass of fibres or pulp 2, 3 completely enclosing a core 4 of compressed hydrophilic fibres. The absorbent mass comprises a layer of hydrophobic cotton fibres 2 and a layer of hydrophilic cotton fibres 3, the layers being wrapped around the core so that an area of hydrophilic fibres is presented to the body of the user. The core may be of wood pulp fibres compressed at a pressure of 900-1200 atmosspheres, and the towel may be provided with a net cover 1 of viscous staple, cotton or polyamide yarns. The layer 2 is treated with a waterproofing metal chlorostearate and the layer 3 with sodium hydroxide, carbonate, and phosphate, a phosphoretic ester and a tetrasodium salt of ethylene diamine, and a specified bleaching solution.
Patent GB-576586-A (GB)
Abstract: 576,586. Water-purifying. SENYAL, F. May 3, 1944, No. 8384. Convention date, March 29, 1943. [Class 46] A water-purifier comprises a reservoir 10 open at the top and recessed to receive a filter member consisting of two receptacles 17, 18 connected together by a tube 23. The tube is closed at the bottom and is provided with an outlet 27 which is screened by a perforated conical member 28. The filtering material which may be activated carbon is covered by a screen 29 through which and through openings 31 in the receptacle filtered liquid can pass to the reservoir 10. Within the receptacle 17 is a liquid receiver 32 provided with a filter comprising a screen 34, a pad 45 of cotton or other material and a screen 44. Liquid to this filter passes through an opening 36 in a plate 35, when the opening is not closed by a spring- pressed valve 37. The water to be purified is placed in a bottle 16 in which is also placed chlorine and coagulating material such as aluminium sulphate. The bottle is then inverted over the reservoir 10 with the valve 37 in the closed position. After a time the valve is raised by means of a chain 41 and is held in this position by the weight of the bottle. The water is thus allowed to flow down the tube 23 and up through the filter material in receptacle 18 into the receptacle 10. The Specification as open to inspection under Sect. 91 comprises also a liquid receiver 59, Fig. 9 (Cancelled) within a sleeve 77 which at the bottom is provided with perforations 78 enabling the water to enter a filter 73. The bottle 57 is provided with a combined stopper and strainer 70, the stopper having an adjustable feed tube 71. This subject-matter does not appear in the Specification as accepted.
Patent GB-1197610-A (GB)
Title: Carry System for a Mechanical Accumulator.
IPC: G06C15/04
Filed: 1967-12-20
Abstract: 1,197,610. Transfer mechanism. INTERNATIONAL BUSINESS MACHINES CORP. 20 Dec., 1967 [23 Dec., 1966], No. 57993/67. Heading G4B. The subject-matter of this Specification is repeated in patent Specification 1,197,609, but the claims relate to a transfer mechanism for a totalizer comprising a plurality of trip members mounted on a rotatable shaft, each trip member being associated with a respective digit wheel and adapted to be displaced in response to movement of the respective digit wheel into its zero position, a plurality of transfer members each connected to rotate with a respective trip member, other than the trip member associated with the highest order digit wheel, and to co-operate with a respective carry drive actuator to impart one digit rotation to the next highest order digit wheel, the highest order trip member being secured to the shaft so as to rotate the shaft whenever the highest order digit wheel moves into its zero position. Rotation of the shaft generates an overflow signal when the capacity of an add-only totalizer is exceeded. Alternatively, in the case of a totalizer adapted for both addition and subtraction, the lowest order transfer mechanism is secured to the shaft to add a fugitive one to the lowest order digit wheel whenever the shaft is rotated by movement of the highest order digit wheel into its zero position.
Patent GB-1413490-A (GB)
Title: Apparatus and method for determining coefficient of friction
IPC: G01N19/02
Filed: 1972-12-15
Abstract: 1413490 Friction testing; measuring coefficient of friction electrically CATERPILLAR TRACTOR CO 15 Dec 1972 58086/72 Headings G1N and G1S To measure the coefficient of friction between a substantially planar test surface 11, e.g. of a friction clutch or brake disc, and a reference surface defined by the annular end surface 30 of a member 24 adapted to be rotated by an electric motor 26 through spindle 28 about an axis Y, the test surface 11 is mounted to be pivotable about the axis X of a shaft 18 (the axes X and Y preferably being coincident) such that when the member 24 engages a portion of the surface 11 at a point on its periphery the surface 11 is induced to pivot about axis X, means being provided, such as a flexible cantilevered link 40 which abuts a fixed stop 42 tending to resist such pivoting and bearing a strain gauge 44, for measuring the torque applied to the test surface 11 by the member 24. The test surface 11, which is preferably annular, and its mounting 12-17 can be forced against the member 24 by loading the shaft 18 with a variable axial load supplied by a pneumatic cylinder arrangement 20. The speed of rotation of the member 24 can be increased from zero in a test in order to measure both static and dynamic friction, the speed being measured by a magnetic pick-up head 50 responsive to the movement of splines 49 on the spindle 28. A housing 10 for the apparatus may be filled with oil to a level 38 to simulate working conditions. The coefficients of static and dynamic friction can be directly calculated from the measured torque.
Patent GB-1382810-A (GB)
Title: Brush
IPC: A46B3/12
Filed: 1971-12-14
Abstract: 1382810 Brushes J E COOMBES 13 March 1973 [14Dec 1971] 58087/71 Addition to 1260859 Heading A4K The brush of Specification 1260859 is modified by having the handle and stock integrally formed of plastics material. The bunch of bristles of each brush unit may be replaced by foamed plastics material.
Patent GB-1321847-A (GB)
Title: Gas burners
IPC: F23D14/62
Filed: 1970-12-08
Abstract: 1321847 Gas burner with set of interchangeable nozzles ALLGAS GERATE GmbH [trading as STRACHE GASAPPARATEBAU KG] 8 Dec 1970 [30 Dec 1969] 58251/70 Heading F4T An atmospheric burner, fixed to plate 1 by clamp 4, includes primary air intake apertures 11 and a set of gas nozzles 8 of different lengths thus enabling the distance between the nozzle 8, positioned upstream of the apertures 11, and the apertures 11, and thus the pattern of mixing of gas and air in bore 10, to be varied by exchanging nozzles 8 in threaded bore 7 such that the burner is suitable for use with different fuel gases. Preferred dimensions of the burner and nozzles are disclosed and claimed. The bore 10 is formed with stepped portions 14, 16 to foster turbulence in the gas/air mixture thus obviating the need for a separate mixing tube, and the elongated burner tube 5 is provided with a series of slots 19 arranged in zig-zag fashion. Flat lateral members 20 serve to direct combustion air flow adjacent the burner tube 5 and an annular shield may be arranged around the tube 5 to prevent blow-back of the flame to the nozzle 8.
Patent GB-1363090-A (GB)
Title: Narrow fabric looms
IPC: A44B19/54
Filed: 1972-12-11
Abstract: 1363090 Zip fastener looms BONAS MACHINE CO Ltd 11 Dec 1972 [18 Dec 1971] 58897/71 Heading D1E To ensure the weft thread enters the correct convolution of a helical fastener element on a stringer tape a blade 7 on the reed 2 pushes the weft forward and, when the helice is shed upwardly, a pin 9 is lowered so that its inclination causes the weft to slide down the pin 9 into the convolution and, when the helice is shed downwardly, a pin 9A is lowered so that its inclination causes the weft to slide upwardly into the convolution.
Patent GB-1277608-A (GB)
Title: A process for the manufacture of vitamin-a esters
Inventor: WEINSTOCK M
IPC: A61P3/02
Filed: 1969-12-04
Abstract: 1277608 Vitamin A esters ROCHE PRODUCTS Ltd 19Nov 1970 [4 Dec 1969] 59235/69 Heading C2V A Vitamin A alkanoyl ester is obtained by reacting without heating a halogenated hydrocarbon solution of a compound of formula wherein R is an alkanoyl group and R<SP>1</SP> is hydrogen or an alkanoyl group, with a solution of a hydrogen halide in a halogenated hydrocarbon and splitting off hydrogen halide from the resulting halogen compound in the presence of water and/or a basic substance. In examples solutions of hydrogen bromide and hydrogen chloride in dichloromethane are reacted with solutions in dichloromethane of compounds of Formula I where R is acetyl and propionyl and R<SP>1</SP> is hydrogen, acetyl and propionyl, and then reacting the products with aqueous solutions containing sodium carbonate and pyridine.
Patent GB-1334068-A (GB)
Title: Polyolefin film containing dispersed threrein fine particles of dielectric liquid-soluble filler material
IPC: H01G4/20
Filed: 1970-12-14
Abstract: 1334068 Polyolefin compositions GENERAL ELECTRIC CO 14 Dec 1970 [29 Dec 1969] 59393/70 Heading C3P [Also in Division H1] Polyolefin films used as a dielectric material in liquid hydrocarbon-impregnated electrical insulation systems, comprise the said film having disposed therein discrete particles of a polymeric filler, said particles having a higher melting temperature than the film, both the particles and the film being soluble in liquid hydrocarbontype dielectric impregnants under the same conditions with the particles being more soluble than the film. The particles of, for example, polycarbonate, polysulphone or polyphenylene oxide resins, are preferably present in 0À5 to 30% by volume of the film. The hydrocarbon-type impregnants are defined as those which contain hydrogen and carbon atoms only and also those containing halogen atoms, e.g. chlorinated diphenyls. The use of the films in capacitor construction (see Division H1) is described.
Patent GB-1245610-A (GB)
Title: Improvements in and relating to semiconductor devices
IPC: H01L21/60
Filed: 1968-12-19
Abstract: 1,245,610. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 Dec., 1968 [22 Dec., 1967], No. 60379/68. Heading H1K. In a semi-conductor device for amplifying electric signals with an input electrode, an output electrode and an electrode common to both input and output, the effect of lead inductance is reduced by forming the conductors to the input and output electrodes so that they extend at least over a part of their length in the immediate proximity of each other in opposite directions. The body 1 of the semi-conductor device, which may be a transistor, is mounted on a gold conductor layer 5a, serving as output electrode, on a substrate 7 of beryllium oxide. The gold layer 5a and wall 5b having tabs 9 which protrude through slots 13 in a mica insulating plate 10 and are welded to tabs 12 of the output conductors 5c, form the output connection. The input connection comprises wire 4a, gold layer 4b and wall 4c with tab 8 protruding through slot 13 and welded to tab 11 of input conductors 4d. Connections may be effected by soldering as an alternative to welding. The common electrode 3 is connected to lugs 6d via a bridge 6c of gold or aluminium, and the whole assembly may be embedded in a block of resin, only the lugs 6d, 4e and 5d remaining outside the block. Copper, nickel or aluminium may be used for the conductors 4d and 5c. Instead of lugs, the device may have connection pins extending from the encapsulated body in such a way as to allow the device to be plugged into a printed circuit board, Fig. 3, not shown.
Patent GB-2009954-A (GB)
Title: Photosensitive silver halide cyan redox dye releaser containing elements
IPC: C09B29/28
Filed: 1978-12-12
Abstract: Photographic elements containing cyan redox dye releasers which provide images of superior heat and light fastness comprise a support having thereon at least one photosensitive silver halide emulsion layer which is permeable to an alkaline processing composition and which has associated therewith a non-diffusible dye-providing compound of the general formula:   <IMAGE>  wherein  R is optionally substituted alkyl having from 1 to 6 carbon atoms;  R<2> is   <IMAGE> taken together with R and the nitrogen atom to which it is attached forms a 5 to 7 membered heterocyclic ring which is unsubstituted or is substituted with a carboxy group; R<1> represents an alkyl group having from 1 to 6 carbon atoms, an optionally substituted aryl group either of which may be substituted, or -NR<11>R<12> wherein R<11> represents alkyl having 1-6 carbon atoms or aryl either of which may be substituted and R<12> represents alkyl having 1-6 carbon atoms which may be substituted, or R<11> and R<12>, taken together with the nitrogen atom to which they are attached, form a heterocyclic ring which is unsubstituted or is substituted with a carboxy group;  X is -CO- or -SO2-; R<3> is -COOH or -CAR and is attached in the meta or para position to X in the benzene ring; and CAR is a group which is capable of releasing an imagewise distribution of dye in diffusible form, possibly containing a fragment of CAR, as a function of silver halide development under alkaline conditions, provided that the compound contains at least one CAR group and at least one carboxy group except that when R and R<2> form a heterocyclic group and X is -SO2-, the compound may be free of carboxy groups. Certain of these redox dye releasers and intermediate compounds are prepared in Ex 1 and 2.
Patent GB-2046623-A (GB)
Title: Tower packing support for fluid-fluid contact
IPC: B01J19/30
Filed: 1979-04-17
Abstract: Counter current flows of at least one fluid occur in a chamber C having one or more internal supports comprising at least one hollow section 10 comprising a bight, first and second sidewalls 12 extending from the same side of said bight, a respective flangewall 16 projecting transversely outwardly from at least one said sidewall, and optionally a respective flankwall 18 projecting transversely outwardly from at least one said flangewall. Said at least one sidewall and flangewall have respective apertures 26, 30 each with an inlet and an outlet. At least one said outlet is adapted, eg. by provision of flanges 28, 32, to increase resistance therethrough to entrance of fluid from one flow direction in the chamber and/or at least one said inlet is similarly adapted to decrease resistance therethrough to entrance of fluid from said flow direction. Packing elements E can be carried on said support. The flanges 28, 32 further increase the strength and rigidity of the supports. The packing support is suitable for gas-liquid contact, eg. for heat transfer. <IMAGE>
Patent GB-2023511-A (GB)
Title: Keels
IPC: B63B41/00
Filed: 1978-09-14
Abstract: A keel comprising two mutually inclined fins (1, 2) which are movable relative to a hull on which the keel is mounted and means such as releasable ratchet devices (31, 32) for locking the fins in any of a plurality of positions relative to the hull. The keel may thus be selectively positioned asymmetrically with respect to the hull to give improved performance and to provide a stable base on inclined surfaces.
Patent GB-2027187-A (GB)
Title: Headlamp for motor vehicles
IPC: F21V17/00
Filed: 1979-07-20
Abstract: The reflector (10) of a motor vehicle headlamp is made from plastics material, particularly thermosetting plastics material, and is adjustably secured to the housing of the headlamp by three holding elements (20). A stud (25) and an arm (26) project at one side from the holding element. The rim of the reflector has a notch (13) for receiving the stud and an arcuate shoulder (12) which cooperates with the arm (26) to allow a range of pivotal adjustment of the reflector.   <IMAGE>
Patent GB-2061210-A (GB)
Title: Vehicle sun visor
IPC: B60J3/02
Filed: 1979-10-25
Abstract: A sun visor assembly comprises a visor panel having a peripheral wire frame 1 in the form of a loop, a mounting block 8 non-rotatably connected to the loop, the ends of the loop being retained in engagement with the block by the resilience of the wire. A shaft 15 extending from a mounting bracket is rotatably received in the block 8 and a spring clip 20 mounted on the block 8 engages the shaft to resist rotation. The spring clip 20 is housed within a recess 17 in the block to avoid dangerous projections. <IMAGE>
Patent GB-2036095-A (GB)
Title: Rack Mechanism for the Control Drums of Circular Knitting Machines
IPC: D04B15/94
Filed: 1979-11-14
Abstract: A racking mechanism capable of providing pre-selected racking sequences during successive periods of activation incorporates butts (9A to 9D) arranged to cooperate with slides (2A to 2D) which are advanced and retracted one at a time to unbluff racking pawls (6,7). The mechanism will bluff the pawls (6,7) if the butts on the elements (20) are excessively out of synchronisation with the slides (2A to 2D) which advance in step with cylinder rotation. The invention also provides an electric switch controlled equivalent of the above mechanical arrangement. <IMAGE>
Patent GB-2039900-A (GB)
Title: Octahydro-indolo[2,3- a]quinolisine derivative
IPC: C07D461/00
Filed: 1979-12-14
Abstract: The compound of formula (VII),   <IMAGE> which compound is not only itself biologically active but also of use in the synthesis of 10-bromovincamines. Precursors of the formulae V, VI and VIII and by-product XI are also claimed.   <IMAGE>
Patent GB-2065502-A (GB)
Title: Scrap cutting apparatus
IPC: B23D15/12
Filed: 1979-12-21
Abstract: A cutter for cutting scrap material which is continuously discharged from an automatic feed press, comprises a fixed blade 14 and movable blade 10 to shear the material. The movable blade 10 is supported by a plate 6 which is oscillated at the other end by an eccentric cam ring 8. Guide means 25 control the movement of the movable blade 10 which is oscillated in such a way relative to the fixed blade 14 as to perform progressive point contact cutting and thus reducing the cutting effort required. <IMAGE>
Patent GB-2068826-A (GB)
Title: Coated boards of wooden material, in particular for use in furniture
IPC: A47B13/08
Filed: 1980-01-30
Abstract: A wooden board for use for example as a table top has a moisture-proof coating on its upper surface (5) and an edging (2) of synthetic material which is sprayed under pressure on to the cut edge surface (8) of the board. The edging overlaps the adjacent edge (11) of the upper surface of the board and penetrates a profiled cut-out in the edge surface. In order to give a good moisture seal, the cut-out profile has an inwards directed back cut (9) immediately under the upper board surface (5) and a lower outwardly directed projection (12). Many examples of the shape of the back cut are shown. <IMAGE>