baber/WOPTO huggingface dataset:
Patent GB-193549-A (GB)
Title: Improvements in locking mechanism for "loose-leaf" binders
IPC: B42F13/36
Filed: 1921-12-06
Abstract: 193,549. Copeland Chatterson Co., Ltd., and Mann, A. Dec. 6, 1921. Locking-followers.- In a post file wherein the clamping bar sliding on the posts contains camoperated, sliding, locking plates adapted to grip or release the posts, the cam member f is provided with a projection g<1> adapted to engage an abutment i on the clamping member so as to limit its turning movement. The posts c are attached to a solid clamping bar a and pass through the slidable bar b containing spring members j, j<1>, the free ends of which normally grip the posts. Slidable plates e, e<1> bent downwards and bifurcated at their outer ends, are adapted, when forced outwards by the engagement of the cam member f with their flanged inner ends, to lift the members j, j<1> and release the posts. The projection g<1> on the cam member is semi-circular and moves in a slot g<2>, of circular form having a right-angled abutment i formed therein which limits the movement of the cam member.
Patent GB-870502-A (GB)
Title: Improvements in breather valve arrangements for hydraulic props
Inventor: CANNON DENNIS HENRY
IPC: E21D15/51
Filed: 1957-10-21
Abstract: 870,502. Valves. DOWTY MINING EQUIPMENT Ltd. Oct. 17, 1958 [Oct. 21, 1957], No. 32827/57. Class 135. [Also in Group X] An hydraulic pit prop is provided with a spring-closed breather valve 6 which is opened at the same time as the release valve unless the prop is tilted. The release valve is operated by a spring-pressed plunger 28 which is coupled by a lever 20 to the valve 6 through a slidable cup 7 containing a ball 10 which breaks the connection when the prop is tilted. Fig. 4 (not shown) shows a mushroom type of breather valve.
Patent GB-656003-A (GB)
Title: A process for the simultaneous recovery of base metals in powder form and of metallic salts
IPC: B22F9/20
Filed: 1948-12-20
Abstract: In a process for the simultaneous recovery of metals below alkali metals in the electromotive force series of the metals, and alkali salts, solid compounds of the metals containing the minimum quantity of water, or water of crystallization, are placed in intimate contact with alkali metal amalgams, the metal being precipitated quantitatively as a powder and the rest of the original compound appearing as the anion of a newly-formed alkali metal salt.  The reaction may take place in a vacuum or in an atmosphere of an inert gas.  The mercury may be recovered by filtering or distillation and the alkali salt used as such, or part may be decomposed to provide alkali metal for the production of amalgam.  In an example, manganese ores may be chlorinated and treated with sodium amalgam to precipitate manganese with the formation of NaCl, which floats as a solution on the mercury released from the amalgam.  The manganese is obtained by distillation of the manganese amalgam crystals after separating the excess mercury and more sodium amalgam formed by electrolysis of the NaCl, the liberated chlorine being used to treat more manganese ore.  The recovery of iron from waste pickling liquor and antimony from stibnite are described.ALSO:In a process for the simultaneous recovery of metals below the alkali metals in the electromotive series of the metals and alkali salts, solid compounds of the metals containing the minimum quantity of water, or water of crystallization, are placed in intimate contact with alkali-metal amalgams, the metal being precipitated quantitatively as a powder and the rest of the original compound appearing as the anion of a newly formed alkali metal salt.  The reaction may take place in a vacuum or in an atmosphere of an inert gas.  The mercury may be recovered by filtering or distillation and the alkali salt used as such, or part may be decomposed to provide alkali metal for the production of amalgam.  In an example, manganese ores may be chlorinated and treated with sodium amalgam to precipitate manganese with the formation of sodium chloride which floats as a solution on mercury released from the amalgam.  The manganese is obtained by distillation of the manganese amalgam crystals after separation from excess mercury and more sodium amalgam formed by electrolysis of the Na Cl, the chlorine being used to treat more manganese ore.  The recovery of iron from waste pickling liquor and antimony from stibnite are described.
Patent GB-889350-A (GB)
Title: Diacyl derivatives of corynanthine
Filed: 1958-10-15
Abstract: The invention comprises esters of N1-acyl corynanthines, p  wherein the esterifying and N1-acylating radicals are different, the N1-acylating radical being that of an aliphatic carboxylic acid such as an alkyl acyl radical and the esterifying acyl group preferably being that of an aliphatic, aryl or aralkyl acyl radical, and acid addition salts, such as a hydrohalide, of these compounds.  It comprises also, the preparation of the acyl derivatives by acylating corynanthine or its hydrohalide with one equivalent of an acylating radical, suitably by reaction with an acid halide or anhydride to form an ester, and thereafter treating with another acylating agent, e.g. halide or anhydride.  The products include N-acetyl-O-benzoyl-O-phenacetyl- and O-p-methoxybenzoylcorynanthine and N-propionyl-O-benzoyl and O-acetyl-corynanthine.  Specification 889,349 is referred to.
Patent GB-756464-A (GB)
Title: Improvements relating to the production of vulcanisation accelerators
Inventor: LUNT JOHN COOPER
IPC: C07D277/80
Filed: 1953-11-27
Abstract: N-Cyclohexyl 2-benzthiazylsulphenamide is manufactured by oxidizing cyclohexylamine and mercaptobenzthiazole with an alkali metal (e.g. sodium or potassium) hypochlorite at a temperature in the range 45-70 DEG  C. (preferably 50-65 DEG  C., e.g. about 60 DEG  C.). The starting materials may be employed in the form of the cyclohexylamine salt of mercaptobenzthiazole, which may be produced by heating the components together in water, or in situ by starting with a mixture of cyclohexylamine and an inorganic salt of mercaptobenzthiazole (e.g. the sodium or potassium salt) and adding a non-oxidizing acid (e.g. sulphonic acid) simultaneously with or preferably prior to the addition of the hypochlorite.  Preferably excess (e.g. about 10 per cent excess) of cyclohexylamine is used, and the oxidation is effected with an aqueous solution containing 7-15 per cent of sodium hypochlorite and 0.6-0.9 per cent of sodium hydroxide by weight. Advantageously this solution is added slowly with stirring, the course of the reaction being followed by measuring the pH value with an antimony electrode and a calomel half cell, and the addition of hypochlorite being stopped when the pH valve begins to fall sharply. The product may be purified by treating it, advantageously at about the temperature of the oxidation step, in an aqueous medium with an alkali (e.g. sodium hydroxide, preferably as a 10 per cent aqueous solution in an amount of about one-fifth of the molar equivalent of the original amount of mercaptobenzthiazole or its salt).  In examples, oxidation with sodium hypochlorite is effected at (1) 48-50 DEG  C., (2) 49.5-51 DEG  C., and (3) 59.5-61 DEG  C.  Specifications 517,451, 642,597 and 655,668 are referred to.
Patent GB-363068-A (GB)
Title: Improvements in the manufacture of articles of steel subject to wear and abrasion
IPC: B23K35/30
Filed: 1930-11-03
Abstract: 363,068. Railway &c. crossings. QUASI-ARC CO., Ltd. and NEWELL, E. F., 15, Grosvenor Gardens, London. Nov. 3, 1930, No. 33029. [Class 104 (ii).] A steel article which is tough and resistant to heavy wearing stresses is made by fusion deposition from a welding electrode or rod .on a foundation of carbon steel containing between 0À2 and 0À6 per cent of carbon, of a layer of an austenitic nickelchromium steel containing from 7 to 10 per cent of nickel and 15 to 20 per cent of chromium. The layer is stated to harden on the surface when subjected to abrasive stresses, which thus increases the resistance to wear. Crossings of railway and tramway systems may thus be built up from a carbon steel base containing between 0À5 and 0À6 per cent of carbon with an austenitic nickel-chromium steel surface layer of 3/16 of an inch or more in thickness.
Patent GB-1397428-A (GB)
Title: Flasher units for motor vehicles
IPC: B60Q11/00
Filed: 1972-07-14
Abstract: 1397428 Road traffic signals on vehicles; lamp failure alarms ROBERT BOSCH GmbH 14 July 1972 [16 July 1971] 33051/72 Addition to 1238829 Headings G4Q and G4N [Also in Division H3] A flasher unit for vehicle direction indicator lamps according to the parent Specification and including a transistor 53 connected as a current amplifier between the collector of transistor 11 and the base of transistor 10, comprises a capacitor 70 connected between the collector of transistor 11 and a common supply line 15 in order to suppress intereference signals. The circuit described is otherwise the same as that of Fig. 6 of the parent Specification 1,238,829.
Patent GB-475009-A (GB)
Title: Improvements in or relating to pianoforte actions
IPC: G10C3/16
Filed: 1936-12-02
Abstract: 475,009. Pianofortes. BRITISH PIANO ACTIONS, Ltd., and WEHLAU, C. H. Dec. 2, 1936, No. 33080. [Class 88 (ii)] The pedal - operated damper-lift bar a is suspended by hooked arms c from tubular bearing-members d adjustably secured in a longitudinal groove f of the action beam e by a screw g engaging a slot i. The screw can thus be positioned to avoid fouling other screws.
Patent GB-632667-A (GB)
Title: Improvements in drilling machines
IPC: B23Q1/70
Filed: 1946-11-07
Abstract: 632,667. Drilling; mounting chucks. CASTELLINI, A. P. Nov. 7, 1946, No. 33102. [Class 83 (iii)] In a drilling-machine, the driving spindle 14 is coupled to the chuck 4 by a film of petroleum or like liquid interposed between their interengaging surfaces, the chuck being mounted on the spindle so as to be capable of relative axial and rotational movement. The hollow spindle 14 is driven by a friction roller 7 which is mounted directly on the shaft of an electric motor 8 and is moved to vary the spindle speed. A shaft 1, carrying a detachable weight 2, rests on the chuck to provide a feed pressure. The drill 4a is of very small diameter and is driven at high speed. A lifter arm 21 resiliently engages the chuck 4 and is raised or lowered by a cam 17. According to the Provisional Specification, the shaft 1 may be fixed to the chuck 4.
Patent GB-630017-A (GB)
Title: Stoves for space heating
IPC: F24C5/06
Filed: 1946-11-08
Abstract: 630,017. Liquid-fuel stoves; liquid-fuel burners. MANTLE LAMP CO. OF AMERICA. Nov. 8, 1946, No. 33282. Convention date, Dec. 21, 1945. [Classes 75(i) and 126] A liquid-fuel heating stove having a vertical casing with lower and upper air passageways is provided with an open blue flame burner having an annular wick and means for supplying inner air, an independently supported burner cone for the supply of outer air to the wick and a parallel member spaced above it, a baffle being disposed horizontally in the upward flow of gases. The vertical casing 1, which may be hingedly lowered into a horizontal position, rests on an annular tank 2 through the centre of which air may be supplied to the inner side of a wick tube 7 and reaches the annular wick 9 by means of a perforated flame-spreader 8. Air reaches the outer part of the wick 9 by passing under the burner cone 12, 13, the upper part 13 being moved into position as the vertical casing 1 is lowered. Secondary air reaches the space above the flame by passing between the upper part 13 of the burner cone and a parallel annular member 15 integral with a tube 16 which loosely fits a coneshaped partition 19 fixed to the vertical casing 1. To the outer part of the wick 9 is attached a tube 29 bearing a helical rack bar 30 which on engagement with a spur gear 31 causes the wick 9 to rise or fall. Upward movement of the wick is limited by the omission of teeth at the lower end of the rack bar 30 and downward movement of the wick limited by the engagement of a lug 36 on the wick tube 29 with a spring stop member 34, which, being integral with a cam member 35 ceases to operate when the burner is withdrawn from the top of the fuel reservoir 2. An inspection window 25 is provided above the partition 19 and a hand opening 27 below the partition 19. A baffle 21 is supported horizontally between the partition 19 and the top of the casing 1.
Patent GB-466664-A (GB)
Title: Improvements in and relating to the arrangement and construction of rudder and tail plane unit of aeroplanes or other aircraft
IPC: B64C9/10
Filed: 1935-12-02
Abstract: 466,664. Controlling aircraft. MARTIN, J. Dec. 2, 1935, No. 33338. [Class 4] In aircraft, the tail-plane 10 and elevators are arranged close to the upper side of the fuselage and the rudder 1 which is in streamline continuity with the fuselage is disposed to the rear of the tail-plane and elevators. As shown, the leading edge of the rudder is semicircular in transverse cross-section and the trailing edge of the fuselage is similarly shaped, the centres of the two curves being longitudinally displaced. The tail-plane 10 merges into the fuselage 15 and forms a horn extending above the rudder. The rudder is actuated from the rudder bar, through chains 16 and sprocket wheel 17 and its movement is assisted by a servo-surface 19 which is adjusted concurrently with the rudder or through rods 20, chain 21 and sprocket 22 ; the rods 20 being connected to a bracket 26 anchored to a frame member 29. The bracket 26 may be replaced by a sprocket wheel 30 and lost motion may be arranged in the rudder or servo-surface controls. The gaps between the rudder and fuselage may be closed by spring-controlled flaps and the leading edge of the rudder may be forked and mounted on brackets 37.
Patent GB-342717-A (GB)
Title: Improvements in and relating to water closets
IPC: E03D9/08
Filed: 1929-11-02
Abstract: 342,717. Water closets with bidet attachments. THOMAS, K., 63A, Leipzigerstrasse, Berlin. Nov. 2, 1929, No. 33440. Convention date, Nov. 3, 1928. [Class 26.] A water closet has water and air pipes 9, 10, Fig. 1, introduced into the bowl from separate columns 3, 4, or as a single unit, the pipes passing between the bowl and seat, and being held in position for use against the action of a spring 22, Fig. 2, a spring catch 25 engaging a projection on the underside of the seat. The seat is raised by spring action when the weight of the user is removed thus disengaging the projection.
Patent GB-988369-A (GB)
Title: Improvements in or relating to power amplifiers
IPC: H03F1/36
Filed: 1961-09-19
Abstract: 988,369. Linearizing klystron amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 19, 1961 [Sept. 22, 1960], No. 33503/61. Drawings to Specification. Heading H3W. An arrangement for linearizing the amplitude characteristic of a klystron amplifier comprises a detector responsive to an output level of the amplifier, a detector responsive to an input level of the amplifier, a circuit for comparing the detected signals so as to derive a difference signal, and means for applying the difference signal to an intermediate cavity of the klystron so as to maintain a linear input/output characteristic. In the embodiment the difference signal varies the impedance of the grid-anode space of a valve which constitutes a load on the intermediate cavity and so controls the overvoltage coefficient. Alternatively, the load may be ferrite material.
Patent GB-318431-A (GB)
Title: Improvements in and relating to the electrolytic production of aluminium
IPC: C25C3/08
Filed: 1928-11-15
Abstract: 318,431. Vereinigte Aluminium-Werke Akt.-Ges. Sept. 3, 1928, [Convention date]. Electrolytic furnaces.-In reducing alumina in a bath of molten alkali aluminium fluorides the anode and cathode have substantially equal active areas. The cathode forms the bottom of the furnace and the anode is provided with one or more channels through which the charge is introduced. The electrodes may be circular and made up of a number of sectors or may be rectangular.
Patent GB-761838-A (GB)
Title: Improvements in the production of copolymers
IPC: C08F214/06
Filed: 1954-11-19
Abstract: Terpolymers are made by polymerizing in aqueous suspension a monomeric mixture containing vinyl chloride, at least 75 per cent by weight of vinylidene chloride and from 0.1 to 3 per cent by weight of an ester of acrylic or methacrylic acid.  Polymerization is preferably effected in the presence of a suspending agent such as gelatine, poly - N - vinylpyrrolidone, sodium polyacrylate, polyacrylamide, finelypowdered barium sulphate, talc, or bentonite, or "seed" terpolymers of the same composition, and a polymerization catalyst such as benzoyl, acetyl, lauroyl, or cyclohexanone peroxide, cumene hydroperoxide, ammonium or potassium persulphate, azo-isobutyronitrile, admixed, if desired, with reducing compounds such as tert.-amines, metal salts, or sodium bisulphite.  The polymerization may be effected at a pH between 2.5 and 9, and softeners and dyestuffs may be present in the aqueous suspension. The ester may be methyl, ethyl or butyl acrylate or methacrylate. The terpolymer is soluble in tetrahydrofurane.  Specification 605,517 is referred to.
Patent GB-504764-A (GB)
Title: Improvements in or relating to multi-tubular heat interchangers
IPC: F28D7/16
Filed: 1937-12-04
Abstract: 504,764. Jointing pipes to plates; heat - exchangers. SUPERHEATER CO., Ltd., and PICKSTONE, M. T. Dec. 4, 1937, No. 33616. [Class 99 (i)] [Also in Group XIII] In a heat-exchanger tubes 7 are connected to tube-plates comprising a perforated rubber disc 9 between two perforated plates 8, means being provided to draw the latter together, compressing the rubber against the tubes. In a shell 1 having tube-plates at each end, the plates are joined by a central shouldered bolt 10 and nuts 12. The shell may have flanged sections, the bolted joints of which compress a packing ring 16 around the tube - plate. Alternatively, the edge of the disc 9 is pressed against the interior of an unjointed shell. Specification 504,762, [Group XIII], is referred to.
Patent GB-976169-A (GB)
Title: Improvements in data storage or code conversion arrays
Inventor: OWEN CHARLES EDWARD
IPC: G11C17/02
Filed: 1962-09-04
Abstract: 976,169. Read-only memories. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 20, 1963 [Sept. 4, 1962], No. 33826/62. Heading G4A. In a diode read-only memory or code-converter comprises a number of arrays 7 in which the diodes selectively connect the drive lines 6 with sense lines 8. One drive line from each array is connected to voltage source 5 and one sense line from each array to a switch 10. By actuating one source and closing one switch the required connection is made. In the embodiment shown all the sense lines of an array are threaded through a magnetic core 8 which functions as a transformer, the data output being taken from a secondary winding 9. A modification, eliminating the cores and having a switch for every sense line so that one switch for each array has to be closed is also described. Other coupling elements such as magnetic cores, linear or non- linear resistors, or capacitors could be used instead of the diodes.
Patent GB-1522983-A (GB)
Title: Power system for a drilling rig
IPC: E21B15/00
Filed: 1975-08-14
Abstract: 1522983 Boring earth &c DRESSER INDUSTRIES INC 14 Aug 1975 [2 Oct 1974] 33917/75 Heading E1F A compact drilling rig power system includes a compound 10 which comprises several prime movers 11-16, a skid unit for each prime mover to receive the prime mover in disengagible connection, each skid unit having transmission means 11a - 16a to connect with the prime mover, and several power transfer systems 18, 28, 33, 41 to interconnect with the transmission means and arranged to transmit power from all the prime movers to a single output station, each prime mover, skid unit and power transfer system being a package transportable by helicopter. In the described embodiment, the prime movers are internal combustion engines in two opposed groups of three parallel engines each. Transmissions 14a - 16a are engaged in reverse to obtain all final rotation in the same direction. Each transmission e.g. 11a turns a propellor shaft 11b which acts through a disconnectable coupling lie to drive a sprocket shaft of a power transfer system. Mud pumps may be driven through a power take-off system including a drive pulley and clutch, e.g. 23, 24 respectively. Each power transfer system e.g. 18 includes a fluid tight chain case containing lubricant, input and output shafts 11d, 12d passing through side walls of the chain case and sealed in rotatable relationship at bearings 17, 19. The shafts 11d, 12d carry sprockets 20, 21 connected by roller chains 22. The chain cases may be provided with ears to align with matching fences attached to a well platform. The compound 10 includes releasable clutches 27, 31 connected between power transfer systems 18, 28 and 33. The power output from the compound 10 is connected to the transmission means of a main drawworks and drawworks drive assembly, the transmission means including transportable self-contained high and low speed transmissions, 47 and 48 respectively, which operate through clutches 49, 50 to drive shaft 51 of a self-contained drum drive assembly. The output shaft 52 of the latter is coupled at 56 to the drive shaft 57 of a drawworks drum assembly 46 which includes a main drawworks drum 62 and a main drum brake assembly 64 as portable self-contained units. Auxiliary hydraulic brakes 55, 65 may also be provided and the high speed transmission 47 may also connect with a catworks drive assembly 59. The brake assembly 64 includes a brake drum 69 (Fig. 6), brake bands 72, 73 and pads 71, as well as suitable linkage means for operation. The assembly 64 may be secured by fasteners 70 to a hub 66 attached to a part of the shaft 57 extending past the end of the drawworks drum 62.
Patent GB-307860-A (GB)
Title: Improvements in or relating to bodies for vehicles
IPC: B62D29/02
Filed: 1927-12-15
Abstract: 307,860. Fisher, G. L. Dec. 15, 1927. Bodies.-In vehicle bodies of the kind in which the walls are built up of sheet-metal sections, the meeting edges of which are flanged and the flanges clipped together, the body is of the commercial van type in which the sides are without doors, access being from the rear, and the walls are made up of a number of sheet-metal sections having their clipped together flanged edges vertically disposed and the roof is composed of similar sections having their flanged edges transversely disposed. The side sections 16 are provided with flanges which may be clipped together by a clip 30, Fig. 5, and riveted &c., or one of the flanges 24, Fig. 4, may be bent over the other flange 22 and riveted &c. The roof sections 18 may also be similarly flanged and clipped. The top edges of the side sections 16 are provided with a bead 32, Fig. 8, and a flange 34 for connection to the roof sections 18, gussets 38 also being provided which pass between the upstanding flanges of the roof sections. The side sections are secured by flanges 56, Fig. 11, to the floor 46 which is secured to the chassis members and by gussets 50 secured to the side sections and provided with a channel member the web 52 of which passes into saw-cuts in the floor and the flanges 54 of which embrace the floor boards. The end section 20, Fig. 12, is bent at the rear and formed with a channel in which a wood strip 62 is secured. Doors 66 are provided which are bent over at the margins to form channels for strengthening purposes. A cab section 19 and a driver's seat are provided.