baber/WOPTO huggingface dataset:
Patent GB-1260289-A (GB)
Title: Improvements in or relating to fluid pressure operated reciprocating motors
Inventor: BUTTERWORTH PHILLIP
IPC: A01K31/06
Filed: 1968-02-12
Abstract: 1,260,289. Reciprocating motors. BUTTERWORTH HYDRAULIC DEVELOPMENTS Ltd. Jan.28, 1969 [Feb. 12, 1968], No.6797/68. Headings F1A and F1M. In a fluid operated reciprocating motor the stroke of the piston is controlled by closing the port through which the relevant motor chamber is exhausting by a land on the piston. The exhaust port for each motor chamber may be closable to control the stroke in each direction and one of a plurality of axially spaced ports for each motor chamber may be selected to be the exhaust port to be closed by the land or lands so that the stroke of the piston may be pre-selected. As shown supply and exhaust of pressure fluid to and from the motor chambers 5, 6 is controlled by a spool valve 11 exhaust from the motor passing to ports 40, 42 and then to exhaust passage 26. Shortly before the piston travel ceases in the direction X as a land 9 closes exhaust port 42 an auxilliary port 66 is opened by a land 64 to communicate pressure fluid acting through passage 73 with a chamber 16 to reverse the direction of spool valve 11. With chamber 5 open to pressure fluid, chamber 6 is opened to exhaust passage 48 via the respective port or ports 41, 41a or 41b which communicate with chamber 46 of port control device 47. The spool valve 11 and piston 1 are reciprocated in phase by the provision of a further chamber 76 in the port control device 47 communicating via passages 78, 79, 80 with ports 68, 68a and 68b controlled by a land 65 such that with the piston moving in the direction Y ports 41, 41a and 41b are closed before the respective port 68, 68a or 68b is opened. Pressure fluid is thus exhausted from chamber 16 through exhaust port 74 to reverse the spool valve 11. The valve as shown may be automatically reciprocated to give continuous reciprocation of the motor. To prevent shock at the end of each stroke restrictions 27, 28 open to exhaust to cushion the piston arrest.
Patent GB-195508-A (GB)
Title: Improvements in and relating to methods of making silica or quartz glass
IPC: C03B27/06
Filed: 1922-03-08
Abstract: 195,508. British Thomson - Houston Co., Ltd., (General Electric Co.). March 8, 1922. Resistance furnaces. - An electric vacuum furnace for use in the production of transparent fused silica comprises a tank 1 from which the air can be withdrawn, a helical resistor 6 of graphite. or other suitable material, a refractory screen 13 surrounding the resistor, and a crucible 15. The terminals of the resistor may be watercooled. Specification 189,926, [Class 56, Glass] is referred to.
Patent GB-313195-A (GB)
Title: Improvements in or relating to pumps, engines or other apparatus impelled by or for impelling fluid
IPC: F01C1/352
Filed: 1928-03-06
Abstract: 313,195. Hughes, C. March 6, 1928. Fixed-abutment type; packing drums, vanes, abutments, and the like.-In a. rotary engine or pump of the type having a plurality of vanes sliding through rocking housings' n in a rotor eccentrically situated in a casing, the surface of which at the place of contact 8 is curved to fit the rotor over an arc, the rotor is provided at each end with webs i, j having journals g, h of less diameter than the rotor drum, and a central shaft u by which the vanes are constrained is also supported at each end. The vanes o may be pivotally secured to a bush x fixed to or free to rotate on the central shaft u by which they are located; one vane w may be rigidly fixed to the bush. Alternatively the vanes may have portions encircling the bush or they may be retained on the central shaft u by rings engaging arcuate lugs at the inner ends of the vanes. Leakage fluid may be returned to the suction side from annular channels 11, 12. The vane tips may be curved to fit the casing surface.
Patent GB-139629-A (GB)
Title: Surface generating lathe
IPC: B23Q35/10
Filed: 1919-03-21
Abstract: 139,629. Hughes, W. March 21, 1919. Lathes for producing articles such as the seatings of boiler fittings employ a spindle carrying a rotary tool-holder and sliding in its bearings under the control of a former. The spindle A carries at opposite ends parallel arms C, K. The arm C carries tool-slides D fed by star-wheels and a right and left hand screw. The arms K carry roller slides fed by starwheels through changegearing Q. A spring J located between thrust washers holds the rollers mounted with a former S. In order that one former may produce a variety of curvatures, the rate of traverse of the rollers relatively to the tools is varied by the gearing Q. Scales X, W facilitate the initial setting of the slides.
Patent GB-249162-A (GB)
Title: Improvements in the manufacture and production of gaseous fuels
IPC: C10L3/00
Filed: 1926-03-15
Abstract: 249,162. I. G. Farbenindustrie Akt.- Ges. March 16, 1925, [Convention date]. Gaseous mixtures.-A gaseous fuel for heating purposes or for use in internal-combustion engines is obtained by the addition of a metal carbonyl such as iron carbonyl to a combustible gas such as producer gas or water gas. The fuel should contain at least 0.05 per cent of its weight of the metal carbonyl which may be injected in a liquid state into the gas current.
Patent GB-937683-A (GB)
Title: Surface active compounds comprising phenoxy-polyethoxy-propylamines
IPC: C08G65/00
Filed: 1961-02-28
Abstract: The invention comprises compounds of the formula <FORM:0937683/IV(a)/1> where the alkyl substituents in the alkylphenyl group have a total of 6-18 carbon atoms, NRR1 is a secondary amino radical and n is an integer from 1-100, together with salts and quaternary ammonium derivatives of the amines.  The compounds may be prepared by reacting an alkylated phenol, containing 6-18 carbon atoms in the alkyl group(s), first with an epihalohydrin to yield an alkylphenylglycidyl ether, then with a secondary amine to yield an alkylphenyl-2-hydroxy-3-propyl amine fully substi-tuted on the nitrogen atom, and then with 1-100 mols. of ethylene oxide. Alternatively, a condensation product from an N,N-disubstituted amine and an epihalohydrin may be condensed with the alkylated phenol and the product then reacted with ethylene oxide.  In either event the products may be finally quaternized, e.g. with methyl iodide or dimethyl sulphate.  In examples octyl, nonyl and dodecyl phenols are reacted with epichlorhydrin to give glycidyl ethers, the ether is reacted with a secondary amine such as a dialkylamine, aryl alkyl-amine, aralkyl alkylamine or a cyclic amine such as piperidine or morpholine, and the resulting 3-alkylphenoxy-2-hydroxy-propylamine is condensed with ethylene oxide to give products containing 16-50 ethenoxy units.ALSO:The invention comprises compounds of the formula <FORM:0937683/IV(a)/1> where the alkyl substituents in the alkylphenyl group have a total of 6-18 carbon atoms, NRR1 is a secondary amino radical and n is an integer from 1-100, together with salts and quaternary ammonium derivatives of the amines.  The compounds may be prepared by reacting an alkylated phenol, containing 6-18 carbon atoms in the alkyl group(s) first with an epihalohydrin to yield an alkylphenylglycidyl ether, then with a secondary amine to yield an alkylphenyl-2-hydroxy-3-propyl amine fully substituted on the nitrogen atom, and then with 1-100 mols. of ethylene oxide. Alternatively, a condensation product from an N,N-disubstituted amine and an epihalohydrin may be condensed with the alkylated phenol and the product then reacted with ethylene oxide.  In either event the products may be finally quaternized, e.g. with methyl iodide or dimethyl sulphate.  In examples octyl, nonyl and dodecyl phenols are reacted with epichlorhydrin to give glycidyl ethers, the ether is reacted with a secondary amine such as a dialkylamine, aryl alkyl-amine, aralkyl alkylamine or a cyclic amine such as piperidine, pyrollidine or morpholine, and the resulting 3-alkylphenoxy-2-hydroxy-propylamine is condensed with ethylene oxide to give products containing 16-50 ethenoxy units.
Patent GB-287320-A (GB)
Title: A time recorder for use in connection with electrical tramway, railway and like systems
IPC: G07C5/12
Filed: 1927-03-16
Abstract: 287,320. Gledhill, A. H. March 16, 1927. Recording particular operations. - A time recording apparatus for use in connection with electrical tramway, railway and like systems' comprises means mounted on the vehicle and actuated automatically by a temporary interruption in the electrical driving circuit for recording on a clock driven drum the time when the vehicle passes a given point along the route. As shown in Figs. 1, 3 and 5, a recording drum a<2> is driven by gearing a from a clock controlled spindle a<1> and the marker, constituted by a roller c<6>, is movable across the drum by means of a screw B operated by gearing b in mesh with gearing a. The lever c<5> carrying the marking roller is pivotally mounted on a sleeve c<1> projecting from a plate c<2> and slidably mounted on a rod c<3>; on the sleeve is also pivoted a member c formed with a half-nut C engaging the screw B. An inking roller c' suspended by a link from the lever c<5> is maintained by gravity in contact with the marking roller and to the lever c<5> is pivoted a catch c<9> for the purpose of moving the roller to inoperative position and disengaging the nut C. The screw B and rod c<3> are slidably mounted in bearings on the machine frame the amount of movement being regulated by an adjustable stop b' and blocks b<1>, b<2> secured to the rod c<3>. Attached to the block b<1> is a lever b<4> pivoted on a rod b<5> to which is also pivoted a spring- controlled arm b<6> the lever and arm being connected at the free ends to the armature b' of an electro magnet b<8> in the driving circuit of the vehicle when the circuit is temporarily interrupted as by the trolley of the tram &c., passing over a dead section the electromagnet is disengaged and causes a movement of the lever b<4> to displace the screw B and produce a horizontal mark on the record drum. Means may be provided for automatically returning the marker to the left after traversing the drum.
Patent GB-1503935-A (GB)
Title: Monolithically integrated semiconductor elements
IPC: H01L23/525
Filed: 1975-02-21
Abstract: 1503935 Semi-conductor devices ROBERT BOSCH GmbH 21 Feb 1975 [22 Feb 1974] 7275/75 Heading H1K A monolithically integrated semi-conductor device constituted by a number of similar component elements connected in parallel includes facilities for enabling faults in the individual components to be detected during manufacture and the faulty components to be isolated. Though the device may be a diode, thyristor, triac &c. as described, it is a transistor which in one embodiment includes measuring resistors and fuses in the leads to the emitter, base and collector of each component transistor. In alternative embodiments the measuring resistors in the emitter leads may additionally serve as equalizing resistors. Where certain faults have a higher incidence than others the resistors and/or fuses need be provided in only some of the leads. Also the dual role of measuring resistor and fuse may be served by a single element, e.g. a resistive strip of chrome-nickel or a necked portion of the interconnecting metallization and the fuse designed to blow automatically when a fault develops during operation. The resistors and fuses may overlie the components to save space, pads being provided at appropriate points to permit the application of test probes from meters and from the pulsed voltage source used to blow the fuses of defective component elements. In the integrated power transistor shown in Fig. 8 the base and emitter leads each have necked fuse portions and the base leads also include a diffused resistor. By measuring the potential differences between strips of metallization 117n, 117(n+ 1) on the isolation diffusions between adjacent component transistors short-circuits between the collector regions and substrate can be located. In a typical measuring sequence the total collector current under reverse bias with emitters shorted to bases is first measured. If normal the device is accepted. Otherwise the voltage drops across the individual base resistors are measured in turn until an abnormally high one is located. Then the faulty component is open-circuited by blowing its fuses, the total collector current again measured and the process repeated as necessary until the total collector current is normal. Measurement and fuse burning and steps on individual component elements may be performed sequentially or simultaneously.
Patent GB-992931-A (GB)
Title: Gas turbine jet propulsion engine
Inventor: COPLIN JOHN FREDERICK
IPC: F02C7/04
Filed: 1964-02-21
Abstract: 992,931. Gas turbine jet engines. ROLLS-ROYCE Ltd. Feb. 21, 1964, No. 7468/64. Heading F1J. A gas turbine jet propulsion engine of the ducted fan type comprises a first casing which defines an inner duct, first axial flow compressor means, combustion equipment and turbine means being arranged in flow series in the inner duct. The engine comprises also a second casing arranged concentrically around the first casing and defining therewith an outer duct, second axial flow compressor means being arranged in the outer duct. First and second jet propulsion nozzles are arranged at the downstream ends the inner and outer ducts respectively. The second axial flow compressor means have a plurality of stages of rotor blades each of which stages is drivingly connected to or integral with corresponding stages of the first axial flow compressor means. The engine shown comprises a first casing 11 which defines an inner duct 12 which has an air intake 13 and in which are disposed in flow series a low pressure compressor 14, a high pressure compressor 15, combustion equipment 16, a high pressure turbine 17 and a low pressure turbine 18, the turbine exhaust gases discharging through a bifurcated duct 19 which terminates in two propulsion nozzles 20. The high pressure turbine 17 drives the high pressure compressor 15 through shaft 21, and the low pressure turbine 18 drives the low pressure compressor 14 through shaft 22. A casing 23 is concentrically disposed around the first casing 11 and defines therewith an outer duct 24 at the upstream end of which is an air intake 25 and in which is disposed an air compressor 28. The three stages of rotor blades 27 of the compressor 28 are formed as integral extensions of the first three stages of rotor blades 26 of the low pressure compressor 14. The outer duct 24 has a diffusing portion 31 from which air passes to two diametrically spaced apart nozzles 32. Each of the nozzles may be rotated by means not shown so as to vary the direction of flow of air discharging from these nozzles.
Patent GB-899569-A (GB)
Title: Hinge embodying hold-open means
IPC: E05C17/24
Filed: 1961-03-02
Abstract: 899,569. Hinges; stays. ATWOOD VACUUM MACHINE CO. March 2, 1961 [May 16, 1960], No. 7588/61. Classes 65(1) and 65(2). A hinge, Figs. 1, 2, comprises two hinge members 9, 10, a link 21 having one end pivoted to the member 9 at a distance from the hinge axis 15 and a cross-pin 27 on its other end slidable lengthwise of the member 10, and a leaf spring 28 anchored at one end to the member 10 and closely slidably confining the cross-pin between it and the member to resist by its deflection the sliding movement of the cross-pin and thus to hold the hinge members yieldingly in various open positions, the free end of the spring being bent at 29 to hook detachably into an opening 30 in the member 10 and so limit the deflection of the spring, and the spring providing at its opposite ends full clearance for the cross-pin between it and the member 10. The spring is anchored to the member 10 by a rivet 37 having a thin head 38 which is designed to fracture in the event of the door carried by the hinge being thrown open too violently, so that damage to the spring is avoided. The spring is made with a transverse crimp 34 adjacent its fixed end to receive the cross-pin 27 in the fully open position, and the portion 39 of the spring intermediate its ends is inclined at a small angle to the adjacent part of the member 10 so that the resistance to the sliding movement of the cross-pin increases as the hinge opens and is sufficient, at least during the second 45 degrees of opening, to hold the door in any position. In a modification, Fig. 8, a second transverse crimp 42 is formed in the spring intermediate its ends and the portions 43, 44 of the spring are inclined as shown. The link 21 is formed from a length of wire bent to a substantially rectangular form, the coaxially aligned ends 22 being pivoted in a depression 23 in the member 9 and held therein by a strap 25.
Patent GB-1253441-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/63
Filed: 1969-02-12
Abstract: 1,253,441. Mowing machines. BRITISH LELY Ltd. 12 Feb., 1969 [19 Feb., 1968], No. 7693/69. Heading A1F. A mowing machine driven by a tractor 2 has two mowing units 22 and 22A disposed at opposite sides of the tractor path such that the mowing units cut the crop on either side of and adjacent to the tractor path, the width of the path being equal to the cutting span of each mowing unit. The mowing units may be reciprocating bars or cutters rotatable about vertical axes and are tiltable to an inoperative position by hydraulic means (Fig. 3, not shown). They can be operated either singly or together.
Patent GB-874056-A (GB)
Title: Improvements in or relating to the manufacture of hollow articles from thermoplasticmaterials
Inventor: KENNAWAY ALEXANDER
IPC: B29C49/04
Filed: 1959-03-05
Abstract: 874,056. Extruding tubes for blow-moulding. METAL BOX CO. Ltd. Dec. 7, 1959 [March 5, 1959], No. 7757/59. Class 87(2). A method of making a tube of varying wall thickness for use in a blow-moulding operation, comprises varying the amount of material delivered to an extrusion nozzle and moving the extruded tube away from the nozzle at a constant linear speed. The amount of material M, e.g. polyethylene, p.v.c., polystyrene or cellulose esters, delivered to the nozzle 2 is varied by axial movement of a valve member 31 operated against a spring 32 by a hydraulic cylinder and the extruded tube is gripped by pivoted arms 8, 9 mounted on a mounting 10 and normally held in the non-gripping position by a spring 12. During extrusion an air cylinder 28 moves down a rod 27 which firstly rocks a lever 23 to force a frusto-conical member 13 between the arms 8, 9 forcing them to grip the tube 3, and then moves down, at a constant speed, the mounting 10 and gripped tube 3 whilst the amount of material fed to the nozzle 2 is varied by the valve 31. An electrical control circuit Fig. 6, (not shown) and safety devices are provided.
Patent GB-195261-A (GB)
Title: Improvements in furnaces of the kind having enclosed workheating chambers
IPC: C21D9/00
Filed: 1922-03-17
Abstract: 195,261. Rudd, A. E. March 17, 1922. Muffle furnaces; indicators.-A thermo-couple x is passed through the crown flue into the heating-chamber of a muffle furnace through a sheath l, which shields it from the heat of the flue gases. The sheath is shouldered at l<4> to fit an opening in the muffle, and is formed with a depending sleeve l<3> to take the thermo-couple. The space between the body of the sleeve and the thermo-couple is filled with sand. The furnace is heated by burners h delivering into the bottom flue, two from each side, and is provided with two uptakes j, k, one at each end.
Patent GB-522880-A (GB)
Title: Manufacture of puffed, distended, or internally disrupted sheets or boards comprising felted leather fibres
IPC: C08L89/06
Filed: 1939-03-10
Abstract: 522,880. Artificial leather: felted fibrous board. D.C.R., Ltd. March 10, 1939, No. 7834. Convention date, March 11, 1938. [Class 96] Felted sheets or webs containing leather fibres and which may contain up to 90 per cent. of rag pulp, kraft, sulphite, newsprint, ground wood, or cattle hair, sawdust, asbestos, or wool, is steamed at or above atmospheric pressure or immersed in boiling water to cause the material to swell in thickness; longitudinal and lateral shrinkage may be restrained by confining between wire cloths. The leather which may have been shredded dry in a hammer mill may be beaten 4-10 hrs., and fillers, rosin size, wax dispersions, asphalt emulsions, alkali, e.g., lime,. or acid, e.g., acetic, tannic, sulphuric, or hydrochloric, may be added. The product which may be impregnated with asphalt, wax, shellac, artificial resin, rubber latex &c. and may be porous or compressed, may be used as a dielectric, for wallboard, or for mats or pads. In an example a sheet 3/16 inch thick, from a makeup roll is steamed 15 to 30 mins. and yields a sheet 1¢-2 inches thick.
Patent GB-1496430-A (GB)
Title: Vehicle suspension system
IPC: B60G21/073
Filed: 1975-02-25
Abstract: 1496430 Vehicle suspension systems NISSAN MOTOR CO Ltd 25 Feb 1975 [4 March 1974] 7835/75 Heading B7D In a vehicle suspension system comprising self-levelling hydropneumatic suspension units 20 each incorporating an individual height control valve 82, a cut-off valve 54 is arranged to block the fluid supply and return lines connecting the height control valves 82 to a reservoir 64 and a fluid pressure source including a pump 46, accumulator 58 and a relief valve 60 when there is more than a predetermined difference in length between the two units 20 associated either with the front wheels 10, 12 as shown or with the rear wheels so that height adjusting operations are prevented when the vehicle body is inclined due to centrifugal force in a turn or due to one wheel resting on a hump when the vehicle is stationary. The cut-off valve 54 comprises a valve body 104 carried by an arm 96 fixed to one end of an antiroll bar 84, and a spool 122 linked by a rod 130 to an arm 100 fixed to a torsion bar 102 connected by an arm 98 to the other end of the anti-roll bar. When the lengths of the units 20 on opposite sides of the vehicle are the same the spool 122 occupies a central position in which grooves 124, 126 are aligned with fluid supply and return passages 114, 116 and 118, 120. When the anti-roll bar 84 is twisted due to a difference in the suspension unit lengths relative rotation of the arms 96, 100 displaces the spool 122 so that the supply and return passages are blocked. Springs 136, 138 urge the spool 122 in the central position and transient displacements of the spool are resisted by fluid contained in damping chambers 134, 136 which communicate through a restricted orifice 162. A non-return 150 supplies fluid to one damping chamber 136 from the supply passage 114, and a bleed valve 166 is provided for removing air from the other damping chamber 134. In another embodiment no antiroll bar is provided and the cut-off valve is actuated by arms fixed to a pair of torsion bars linked each one to a respective suspension member.
Patent GB-307703-A (GB)
Title: Improvements in or relating to tobacco poor in nicotine and a method for manufacturing the same
IPC: A24B15/10
Filed: 1929-03-11
Abstract: 307,703. General-Direktion der Oesterr. Tabak-Regie. March 10, 1928, [Convention date]. Smoking-mixtures.-In order to obtain a tobacco poor in nicotine but having an aromatic flavour, tobacco which has been denicotined is mixed with untreated tobacco.
Patent GB-347402-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G5/38
Filed: 1930-03-11
Abstract: 347,402. Condensers. CHARMAN, F. J. H., 50, Roseberry Gardens, Harringay, London. March 11, 1930, No. 7931. [Class 38 (ii).] The capacity of a condenser is variable as desired from its maximum value to zero. This may be effected by closing an aperture in an earthed screen S, Fig. 1, on each side of which an armature A, B of the condenser is situated, as by a sliding member, iris diaphragm &c., by moving one or both of the armatures to face the solid part of the screen, or by sliding a cylindrical earthed shield F between a central electrode D and an outer cylindrical electrode E, Fig. 5. As an illustration of use, a wireless circuit is described in which such a condenser is used to neutralize the anode-grid capacities of a screen-grid high-frequency valve.