baber/WOPTO huggingface dataset:
Patent GB-353066-A (GB)
Title: Improvements in or relating to filtering circuits for use in electrical alternating-current or mechanical vibratory systems
IPC: H03H7/01
Filed: 1930-04-16
Abstract: 353,066. Acoustic wave filters. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.- (Assignees of Norton, E. L. ; 15, Summit Street, East Orange, New Jersey, U.S.A.) April 16, 1930, No. 12095. Convention date, April 16, 1929. [Class 13.] In a mechanical or electrical wave filter having one or more broad transmission bands, with nearly uniform attenuation throughout the bands, the output/input voltage ratio is proportional to #(1 + IXI<2n>) where IXI is the modulus of an imaginary odd rational function X of the frequency, and n is the number of impedance arms. Curves 12, 13, 14, Fig. 7 (in which the abscissa is the ratio of the actual frequency f to an arm-resonancefrequency fo) are the impedance characteristics of low-pass filters of this type, having three, five and seven arms respectively; while curve 15 is the characteristic of the corresponding 5-arm constant-k filter. The arms of the filter are of the inverse type, the series impedances and shunt admittances being all real multiples, such as A,XR, of the frequency-function X, Fig. 1, where R is the (resistive) iterative impedance at terminals BB<1>; but each arm has an individual value determined A<r>. The Specification shows how to evaluate the coefficients Ar, and how to design the arms either by treating the frequency at which IXI = <r>1 as a cut-off frequency, or by multiplying the impedances of the corresponding constant-k filter by factors which include the coefficients Ar. Figs. 2, 3, 4, 5 (not shown) indicate respectively low-pass, highpass, single-band-pass and 3-band-pass filters having a series nth branch (at the input end), the first branch being in series or shunt to the load resistance R according as n is odd or even. For the calculation of multi-band filters, however, a trial-anderror method is used: the type of section having been selected, a constant-k filter is constructed and its reactance-values are adjusted to give the required cut-offs. The reactance-values for a filter according to the invention are then deduced by use of the coefficients Ar. Fig. 8 (not shown) indicates a filter in which the nth branch is a shunt branch, the source of voltage 11 being connected in series with a high resistance if necessary. In Fig. 9 (not shown) the input and output terminals are interchanged with respect to the coefficients A,.
Patent GB-741247-A (GB)
Title: Improvements in and relating to the production of acids, esters or acid esters
Inventor: JONES DAVID GWYN
Filed: 1953-05-01
Abstract: Cyclohexa - 1,4 - diene - 1,4 - dicarboxylic acid or acid esters or diesters thereof are made by heating cyclohexane-2,5-diol-1,4-dicarboxylic acid or an acid ester or diester thereof in the liquid phase in presence of water or an aliphatic alcohol of at most four carbon atoms at above 150 DEG  C. but in the absence of a hydroxide or an alkoxide of an alkali metal or an alkaline earth metal.  In examples, dimethyl cyclohexane-2,5 - diol - 1,4 - dicarboxylate was heated with (1) water, to give cyclohexa-1,4-diene-1,4-dicarboxylic acid; and (2) methanol, to give the dimethyl ester of the same acid, and also some of the lactone, 4 - carbomethoxy - 2-hydroxy-6-oxa-bicyclo-[3,2,1]-octa-7-one.
Patent GB-1493357-A (GB)
Title: Manhole assemblies
IPC: E02D29/14
Filed: 1974-03-14
Abstract: 1493357 Manhole covers BRITISH STEEL CORP 14 March 1975 [19 March 1974 12 June 1974] 12114/74 and 26067/74 Heading E1G A triangular or other manhole cover 2 has on its underside three bearing portions 6, 7, 10 spaced around its periphery (e.g. at its corners) for seating on respective bosses 16, 17, 19 of a frame 1, the two portions 6, 7 comprising shallow lugs, Fig. 4 (not shown), presenting engagement surfaces 8, 9 parallel to the plane of the cover while the third portion 10 comprises a downwardly tapering boss 11 presenting to the frame boss 19 a wedging surface 12 sloping downwardly away from the line joining the other two bearing portions. The triangular half-cover shown has on its outer edges two corner lugs 20 which are pressed against a frame wall 21 by the action of the wedging surface 12.
Patent GB-661997-A (GB)
Title: Improvements in or relating to endoscopic instruments
IPC: A61B1/303
Filed: 1949-05-06
Abstract: 661,997. Endoscopes. AMERICAN CYSTOSCOPE MAKERS, Inc. May 6, 1949 [May 11, 1948], No. 12149/49. Class 81 (ii). In an endoscope in which an electrode rod adapted to be connected to a source of electric current is movable within a tube, means are connected to the electrode rod and are adapted to be connected to the electrical supply for simultaneously imparting movement to the rod and controlling electrical energization thereof. As shown a movable electrode rod 50 provided at its further end with an operating electrode 54, together with a surgical telescope 35, is mounted within an endoscopic sheath 10 of an electrical insulating material. The sheath has a fenestra 11 at its distal end whilst its rear end is located within a collar 12 containing a passage 13 and inlet conduit 15 for the transmission of an irrigating liquid into the interior of the sheath. A body portion 20 is inserted into the tapered passage 14 in the collar 12 the portion being clamped by a locking unit and handle 16, 17, which also clamps parallel tubes 22, 23, accommodating the telescope stem 36 and electrode rod 50 respectively. A rack 24 is secured to one end of the body 20 a pinion 56 within a housing 55 engaging therewith to effect longitudinal movement of the rod 50 which, with the exception of its ends, is encased within an insulating material 51. The bare end 52 of the rod is connected to an electrical supply unit by a plug 94 and electrically conductive core 92 inserted in an insulating block 90 carried by the housing 55. Rotation of the pinion 56 is by rotative movement of a rod 62 to which is attached an arm 63. Rotatably mounted on the arm is a combined handle and switch unit 65 comprising spring-loaded press buttons 80, 81 for controlling the " cutting " and " coagulating currents " supplied to the rod 50. Attached to the end of the rack 24 remote from the body 20 is an arm 26 to the top of which is secured a bracket arm 45 mounting a terminal post 44 for connection between an electrical supply and a lamp 40 provided at the forward end of the telescope stem 36. Sighting through the telescope is by the eyepiece 41 whilst the control unit 65 is connected to the electrical supply unit by a three core cable 83 and plug 87. A diagram of connections of the supply unit 100 is shown in Fig. 6 and includes a connection terminal 101, six-volt transformer 102, relays 103, 104, transformers 105, 106, vacuum tube circuits 107, 108, for furnishing the high frequency "cutting" and " coagulating currents respectively and an electrode 112 for connection to the body of the patient.
Patent GB-1077024-A (GB)
Title: Improvements in or relating to the manufacture of shoes
Inventor: GADD RONALD OWEN CASWELL
IPC: A43D71/02
Filed: 1963-03-28
Abstract: 1,077,024. Boots &c. BRITISH UNITED SHOE MACHINERY CO. Ltd. March 25, 1964 [March 28, 1963], No. 12246/63. Heading A3B. A heel attaching machine has a shoe support 1 and a hold down carried by a ram 3, the hold down consisting of a carrier 7, an abutment 45 which engages the back of the heel and a pair of abutments (51) which engage the sides of the heel, all the abutments being movably mounted on the carrier and having power operated means to move the abutments relative to the carrier 7, the power operated means including pressure control valves to individually adjust the pressure exerted, by each abutment. The abutments are similar in construction and consist of a housing 25 containing a spring-returned piston 27, a block 39 carried by the piston rod 29 and an abutment 45 pivoted to the block 39, the angular position of the abutment being adjusted by a screw 47. The rear abutment 45 is pivoted to the carrier 7 at 21 and is adjusted in position by an expanding link 35. A scale 117 indicates the position of the abutment. The side abutments (51) are pivoted to the carrier 7 by rods 17 which can slide lengthwise in lugs 13, 15 and are held in position by a clamping screw 65, the position being indicated by a scale 119. The side abutments are adjusted widthwise of the shoe by a double threaded screw 75. The hold down may include a tread abutment (not shown) which may be fitted to a dovetail (85) on a block (83). The block (83) is carried by a slide (93) which is clamped in the desired heightwise position in the carrier 7 by a block 99 having rack teeth which engage teeth (97) on the slide (93). The angular position of the block (83) is adjusted by a screw 107. The pressure fluid circuit includes three pressure control valves (not shown) which control the pressure exerted by (a) the ram 3, (b) the back abutment 45 and (c) the side abutments (51). Each valve is a spring loaded ball-valve, the pressure exerted by the spring being adjusted by a cam disc and includes a cut-off device.
Patent GB-175565-A (GB)
Title: Improvements in cord grip holders for electric wires
IPC: H01R33/46
Filed: 1921-04-28
Abstract: 175,565. Fletcher, J. Y., and Randall, E. L. April 28, 1921. Cleats; coupling.-Relates to a cord-grip for electric wires of the kind comprising two members 1, 4 of wood &c. having a single passage 5 between them in which the electric cord is gripped. According to the invention, a projection from one of the members is arranged to extend into the passage. As shown, a projection 2 on the member 1 passes between the wires and enters a recess 3 in the member 4. The projection 2 may pass only part of the way into the passage 5 and not be recessed into the passage 4. Alternatively each member has a projection, which projections meet in the passage 5, and the end of one may be recessed to engage the other.
Patent GB-1102673-A (GB)
Title: Improvements in or relating to hinge constructions
Inventor: OWEN KENWYN
IPC: E05F1/12
Filed: 1964-03-24
Abstract: 1,102,673. Hinges; door operating appliances. WILMOT-BREEDEN Ltd. 24, March, 1965 [24, March, 1964], No. 12309/64. Headings E2F and E2M. In a hinge construction suitable for a motor vehicle tailgate, boot-lid or bonnet, an arm 8 supporting the tailgate is fixed to a shaft 7 pivotally mounted in mounting bracket 1 and carrying a lever 9. The lever 9 is pivotally connected to a spring loaded linkage 16, 14 which counterbalances the weight of the tailgate. The spring loading is effected by a pair of tension springs 19 disposed one on each side of the linkage 16, 14 and contained within the mounting bracket 1. The geometry is such that a small force acts on the tailgate in the closed position so that it is freed on release of a latch and such that the tailgate is held by the springs in the fully open position.
Patent GB-960147-A (GB)
Title: Surgical needle
IPC: A61B17/04
Filed: 1963-03-29
Abstract: 960,147. Surgical needles. ETHICON Inc. March 29, 1963 [March 29, 1962], No. 12558/63. Heading D1G. A surgical needle has at least one flattened area between the point and the end to which the suture is attached, with at least one longitudinal rib positioned on at least one flattened surface. As shown, a curved needle of triangular cross-section has three longitudinal ribs 20 formed on the side 19 of the needle disposed parallel to the axis of curvature of the needle. The ribs 20 and the edge 13 of the needle disposed opposite to side 19 are gripped by the serrations 76, 78 of the respective jaws 72, 74, of the needle holder to prevent turning of the needle in said jaws during a suturing operation. A needle of round cross section is formed with two parallel flat surfaces each of which is provided with from one to three longitudinal ribs in accordance with the diameter of the needle.
Patent GB-1206380-A (GB)
Title: Metal alloy powders
Inventor: YURASKO GEORGE JR
IPC: C22C9/00
Filed: 1967-09-15
Abstract: 1,206,380. Coated Cu-alloy powder. EUTECTIC WELDING ALLOYS CORP. Sept.15, 1967 [Sept. 22, 1966], No.12605/70. Divided out of 1,205,793. Headings C7A and C7F. A powder useful in welding and flame-spraying consists of Cu-coated particles of an alloy consisting, by weight, of:- Si 0À1-3% Mn 0-1% P 0À9% Cr 0-1% Sn 0-10% Ni 0-30% Cu balance. Coating may be effected by immersing the alloy powder in copper sulphate solution. Phosphorus may be deposited on the Cu-coating e.g. by chemical or electrolytic treatment in dry mixture with copper phosphate: oxidation of the Cu/P layers produces different colours. Further colouring may be achieved by alloying Au, Ag or Pt with the Cu-coating e.g. by chemical displacement in solution.
Patent GB-117174-A (GB)
Title: Improvements relating to Radial Arm Drilling Machines.
IPC: B23Q1/28
Filed: 1917-09-03
Abstract: 117,174. Jewsbury, J., and Archdale &. Co., J. Sept. 3, 1917. Drilling-machines.-In a radial-arm drilling- machine, motion is transmitted from relatively slidable parts a, b to the locking-devices of the saddle and radial arm respectively. In the arrangement shown diagrammatically in Fig. 3, a toothed sector d pivoted between lugs c on the part b and operated by a lever e engages a rack on the part a. A rack on the part a also gears with a pinion f on a spindle g which operates the clamping-screw of the saddle, while a rack on the part b engages a pinion P which is free to slide, but not to rotate, on a spindle k which operates the locking-device of the radial arm.
Patent GB-827840-A (GB)
Title: Means for arresting a runaway skip
Inventor: PAYNE ARTHUR FRANK
IPC: B61H9/02
Filed: 1957-04-18
Abstract: 827,840. Mine truck brakes. WATTS, BLAKE, BEARNE & CO. Ltd. April 16, 1958 [April 18, 1957], No. 12694/57. Class 103 (1). A mine truck or skip 4 is provided with a small sprag 1 adapted to trail its edge along the ground so that in the event of the skip running back down a slope, the sprag 1 digs into the ground so that its arm pivots about fulcrum 9 and through rod 10 causes the movement of a catch 11, which releases an arm 5a to allow a main sprag 5 to fall and engage the ground. Specification 827,841 is referred to.
Patent GB-1536718-A (GB)
Title: Method of controlling air-fuel mixture in an internal combustion engine and a system therefor
IPC: F02D41/14
Filed: 1976-03-30
Abstract: 1536718 Regulating IC engines; spray carburetters NISSAN MOTOR CO 30 March 1976 [31 March 1975 26 May 1975] 12697/76 Headings F1B and F1H The air-fuel ratio of a mixture supplied by a carburetter or fuel injection arrangement is maintained in the region of the stoichiometric by control of the flow of air and/or fuel in accordance with the signal from a sensor 22 detecting the concentration of oxygen, hydrocarbons, carbon monoxide or dioxide or nitrogen oxides in the exhaust gases. The sensor 22 is located in the exhaust system downstream of the manifold branches and upstream of a catalytic converter 20 which provides optimum conversion of HC, CO and NO x  at a sensed concentration corresponding to a mixture supply which is substantially stoichiometric. The flow of air and/or fuel is controlled by a solenoid valve 26 receiving continuous pulses from an electronic circuit, Fig. 5 (not shown), which opens the valve. Cooling water or air may be directed around a portion of the sensor 22 projecting from the exhaust system when the engine is operated under high output conditions, e.g. by controlling a valve 62 in an engine cooling water flow-path 58, 60 including a chamber 56 enclosing part of the fan or by energizing a fan (72), Fig. 8 (not shown), in an air flow-path over fins (74) on the sensor. The air-flow may be provided by the ram effect of movement of a vehicle in which the engine is mounted. The valve or fan may be operated in response to the angular position of the carburetter throttle valve 52, the intake manifold vacuum, the engine speed or the exhaust gas temperature.
Patent GB-319806-A (GB)
Title: Improvements in methods of cutting plates and sheets from blocks of artificial resins
IPC: B26D1/00
Filed: 1928-04-30
Abstract: 319,806. Raschig, K. W., and Raschig, K. W., (trading as Raschig, Dr. F., [Firm of]). April 30, 1928. Moulding gums and resin.-A block of phenolformaldeyde resin, in the state in which it is hard and brittle when cold but soft and plastic when heated, is heated to 50-120‹ C. and then cut to produce plates, sheets, films, bands, &c. Preferably a stationary cutting tool is used, and the cutting operation may be effected in a celluloid cutting machine.
Patent GB-425938-A (GB)
Title: An improved process for desulphurising motor fuels
IPC: C10G19/02
Filed: 1934-04-27
Abstract: Natural or cracked benzine, benzol and similar motor fuels are freed from carbon disulphide, mercaptans and analogous sulphur compounds by heating the hydrocarbons with an aqueous solution of an alkali or alkaline earth under pressure.  Motor benzole is heated in an autoclave with caustic soda under a pressure of 15 atmospheres at 150 DEG  C., for 1 hour.  The hydrocarbons or the fractions thereof boiling between 78 and 100 DEG  C., which contain most of these sulphur compounds and thiophene, may be submitted to a preliminary treatment with concentrated or dilute sulphuric acid.
Patent GB-1464289-A (GB)
Title: 1-imidazol-1-yl-isoquinolines and process for preparing them
IPC: A61K31/472
Filed: 1974-03-22
Abstract: 1464289 1-(1-Imidazolyl)isoquinolines HOECHST AG 22 March 1974 [26 March 1973] 12861/74 Heading C2C [Also in Division A5] The invention comprises compounds of formula and their salts, wherein R 1 , R 2 , R 3  and R 4  are each H, C 1-4  alkyl or Ph, while R 4  may also be Cl, and R 5  is H, C 1-6  alkyl, C 5-8  cycloalkyl, Ph or Cl. In examples, these compounds are prepared by (a) reacting a 1-chloroisoquinoline (II) with a 1-unsubstituted imidazole, or (b) reducing the compound where R 4  = Cl to R 4  = H. II is prepared by reacting a 1-hydroxy- or 1- unsubstituted-isoquinoline with PCl 5  or POCl 3 . Starting materials otherwise prepared are PhCH : CBCO 2 CO 2 Et and PhCH : CRCON 3  (R=Et or Ph), and 4-R<SP>0</SP>-3,4-dihydro-2H-isoquinolin-1-ones (R<SP>0</SP>=Et, Bu, n-hexyl or cyclohexyl).
Patent GB-593185-A (GB)
Title: Improvements in or relating to vapor phase reactions in the presence of solid catalytic material
IPC: B01J8/18
Filed: 1944-07-05
Abstract: In effecting catalytic gas reactions by means of a dense bed of fluidised catalyst above which is a dilute phase of gaseous reaction products containing entrained catalyst, a quenching medium is injected into the dilute phase to prevent undesired reacton.  The Figure illustrates the dehydrogenation of butane, which is introduced by line 10 into a supply of catalyst from a standpipe 12, the mixture being injected through line 15 into reactor 16.  Gaseous products are withdrawn at 19; spent catalyst is withdrawn by standpipe 31 and treated in regenerator 39 before being recycled.  An inert quenching medium, such as steam or combustion gas from the exit of the regenerator, is passed into the upper part of the reactor through annular pipe 25 and nozzles 26.  It may <PICT:0593185/III/1> also be similarly supplied to the regenerator through nozzles 47. The application of the invention to the cracking of hydrocarbons is mentioned.
Patent GB-315928-A (GB)
Title: Improvements in apparatus for greasing bread tins and other containers
IPC: A21B3/16
Filed: 1928-05-02
Abstract: 315,928. Mackley, A. H., and Slade, L. W. May 9, 1928. Battery lamps. - An accumulator carries a socket element S with contact members 5, 6 the former making a spring fit with a sliding contact member 4 on a fixed plug element P connected with a lighting system and the latter engaging a central contact member 1. The sliding contact 4 when the coupling elements are engaged, in addition to putting the accumulator in series in the lighting circuit connects together concentric contact members 2, 3 between which a, resistance r is connected, but upon separation of the elements the member 4 connects contacts 1, 2 completing the lighting circuit through the resistance r.
Patent GB-118403-A (GB)
Title: Lock-nut Device.
Inventor: JONSSON GUSTAF EMIL
IPC: F16B39/36
Filed: 1918-08-08
Abstract: 118,403. Jonsson, G. E. Nov. 21, 1917, [Convention date]. Locking nuts.-In means for locking nuts used for securing bearing races on their shafts &c., the nut 4 is formed with a screwed conical sleeve 5 on which is screwed a conical lock-nut, the sleeve having one or more transverse slots 7 and longitudinal slots 8 so as to form spring tongues extending around the circumference.
Patent GB-217728-A (GB)
Title: Improvements in and relating to tanks for oil-cooled transformers and the like and other closed receptacles
IPC: H01F27/02
Filed: 1923-05-14
Abstract: 217,728. British Thomson-Houston Co., Ltd., (General Electric Co.). May 14, 1923. Oil switches.-Receptacles such as those used for containing oilcooled transformers or switches immersed in insulating liquid are provided with tight closures capable of withstanding relatively high pressure consisting of a cap 2 the flange 3 of which beds on a packing ring 6 contained in a channel formed by two rings 4, 5, a tight joint being ensured by means of screws 7 secured to the inside of the receptacle and passing through the cover so as to be engaged by nuts 8. Switch-tanks may be grouped as shown in Fig. 1 for use with a three-phase circuit by means of end members 10, spacers 11, and bolts 12. This arrangement is adaptable for two or other poly-phase circuits.
Patent GB-1301091-A (GB)
Title: Preparation of toughened polyvinyl aromatic compound
Inventor: BREMNER ALEXANDER MCCOLL
IPC: C08F291/02
Filed: 1969-03-12
Abstract: 1301091 Toughened polyvinyl aromatic compounds BRITISH PETROLEUM CO Ltd 18 Feb 1970 [12 March 1969] 13009/69 Heading C3G A toughened polyvinyl aromatic compound is produced by partially polymerizing a solution of a rubber in a vinyl aromatic compound until phase inversion takes place, forming a stable suspension of the partially polymerized material in water using a mixture of hydroxyethyl cellulose and polyvinyl alcohol as the suspension stabilizing system and allowing polymerization of the vinyl aromatic compound to continue. In the example, a solution in styrene and water of polybutadiene and polystyrene is prepolymerized using a benzoyl peroxide/lauroyl peroxide initiator system and the prepolymer is suspended in water containing the said stabilizing system and a dicumyl peroxide/t-butyl perbenzoate initiator system for completion of polymerization.
Patent GB-238950-A (GB)
Title: Improvements in brakes for tramway vehicles
IPC: B61H13/02
Filed: 1924-05-28
Abstract: 238,950. Blanchard, M. A. May 28, 1924. Hand - actuation; force - transmitting mechanism. - In brakes for tramway vehicles, of the type in which chains from a vertical brakespindle are coupled to a pair of snailcams a carried on a supporting shaft b, the snail-cams bear peripherral grooves g of rectangular section which receive chains of corresponding shape. Reference has been directed by the Comptroller to Specification 941/00, [Class 108, Road vehicles.].
Patent GB-396185-A (GB)
Title: Improvements in back-spreaders for slaughtered animals
IPC: A22B5/06
Filed: 1932-05-06
Abstract: 396,185. Slaughtering for food. GREINACHER, P., 15, Baisieperstrasse, Remscheid, Germany. May 6, 1932, No. 13115. [Class 28 (ii).] A back spreader for slaughtered animals comprises a screwed sleeve b having an integral forked end a, and a screwed spindle d threaded therein provided with a swivelmounted fork c and an adjusting hand-wheel e. In a modification, the sleeve is rotatable by a handwheel secured thereto, and right and left handed nuts secured to the ends of the sleeve receive correspondingly threaded spindles carrying end forks.