baber/WOPTO huggingface dataset:
Patent GB-608241-A (GB)
Title: Improvements in or relating to receivers of frequency- or phase-modulated signals
IPC: H03D3/08
Filed: 1945-11-14
Abstract: 608,241. Impedance networks. TILLMAN, J. R. Nov. 14, 1945, No. 30477. [Class 40 (viii)] [Also in Group XL (c)] A frequency discriminator for detecting frequency-modulated or phase-modulated waves comprises a four-arm Wien bridge network embodying only resistive and capacitive elements. The bridge, Fig. 1, comprises equal resistors R1, R2, a series connection of resistor R3 and capacitor C1, and a parallel connection R4, C2. The input is applied through a filter BPF across one diagonal a, c, and the output taken across the other diagonal b, d. The bridge is balanced at or beyond one extreme frequency of the input wave, and gives a substantially linear relation between frequency and output amplitude over the frequency range employed. Two such bridges D2, D3 may be used, as shown in Fig. 3, with their balance frequencies f1, f2, Fig. 4, at opposite ends of the frequency range. The output of each bridge is separately rectified by diodes R1, R2 and the differential output is taken across the two load resistors LR1, LR2. One or more of the bridge elements may be adjustable, and amplifiers with adjustable gain may be inserted between the networks D2, D3 and the rectifiers R1, R2. The temperature coefficients of the resistance should be such as to balance out the effect of temperature changes on the capacitors. Specification 571,314 is referred to.
Patent GB-282029-A (GB)
Title: Improvements in and relating to clutches
IPC: F16D13/06
Filed: 1927-11-14
Abstract: 282,029. Barbarou, M. J. B. Dec. 8, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Clutches, friction; operating clutches.-A friction clutch, particularly for use with marine internal - combustion engines, comprises a driving-drum B, coacting with an auxiliary clutch cone J and with main expanding shoes E, E<1>. The cone J is rigid with a spring-pressed sliding sleeve C', on which is non-rotatably mounted a control-member I for the main clutch. The shoe E<1> is coupled by a floating pivot R to the shoe E, which is connected by a pivot G<1> to a member D on the driven shaft C. The member I acts, on engagement of the auxiliary clutch, to turn a lever G, fulerumed on pivot G', and, by a link Q, to expand the shoes against the action of retracting-springs F. The suction in the intake pipe of an internal-combustion engine when the throttle is closed may be used. under control of a three-way cock 0, to move a piston N to declutch. A modification is described, in which the clutch is used with reversing-gear and the throttle is interconnected with a simple cock, so that declutching is effected on slowing the engine to change the mesh of the gear.
Patent GB-1243134-A (GB)
Title: Chemical nickel plating bath and process
Inventor: MILLER GEORGE AUGUST
IPC: C23C18/36
Filed: 1969-06-17
Abstract: 1,243,134. Electroless nickel plating. TEXAS INSTRUMENTS Inc. June 17, 1969 [July 29, 1968], No. 30592/69. Heading C7F. An electroless nickel-hyposphosphite plating bath contains glutamic acid or a glutamate. The bath may comprise Ni ions 0À079 to 0À189 moles/l., hypophosphite ions 0À132 to 0À297 moles/1., glutamate ions at least twice that of the Ni ions, succinate ions at least twice that of the Ni ions and ammonium thiocyanate 0À3 to 0À6 p.p. m., temperature 170‹ F. to boiling and pH 4À0 to 9À0. The glutamate may be monoammonium, monosodium, monopotassium and calcium glutamates. Thiourea may be added as a stabilizer. The substrate may be Cu, Fe, Co, Ni, Pd, Pt, Ag, Au, Al, B or plastics activated with Pd. The constituents of the bath may be prepared as a dry mix which may be pelleted or packaged in water-soluble plastics bags.
Patent GB-844019-A (GB)
Title: Stator vane assemblies for axial-flow compressors or turbines
IPC: F01D9/04
Filed: 1958-09-25
Abstract: 844,019. Elastic fluid turbines. GENERAL MOTORS CORPORATION. Sept. 25, 1958 [Oct. 3, 1957], No. 30651/58. Class 110 (3). A stator vane assembly for a turbine or compressor comprises an outer shroud ring, an inner shroud ring 19, and stator vanes 18 connecting the rings, the assembly being made up of segments which are secured and drawn together by coupling devices carried at the ends of the inner shroud ring portions 20, 21. Each coupling device comprises a U-shaped clasp 30 having arms 31 pivoted to a bracket 27 carried on the portion 21, a screw 36 mounted on the other portion 20 being rotatable to force the crossbar 32 of the clasp over the inclined ramp face 34 of a bracket 33 secured to the same portion 20.
Patent GB-292840-A (GB)
Title: Improvements in portfolios
IPC: B42F21/00
Filed: 1927-11-15
Abstract: 292,840. Purucker, A. Nov. 15, 1927. Indexing.-The leaves of a portfolio are formed on the right-hand edge with waved indentations decreasing in number from the top sheet downwards so that portions of all the leaves are exposed to provide a visible index. The top sheet or the top cover c may be provided with a pocket l of celluloid or other transparent material to receive labels, tabs, &c., the pocket being formed by attaching a strip having a similarly indented edge b. Two or more portfolios may be combined in one cover, the waved edges of the lower portfolios projecting beyond those of the upper.
Patent GB-1163569-A (GB)
Title: Carton transfer apparatus
IPC: B65B43/46
Filed: 1967-07-04
Abstract: 1,163,569. Making cartons. FMC CORP., and AMERICAN CAN CO. 4 July, 1967 [8 July, 1966], No. 30707/67. Heading B5D. [Also in Division B8] Cartons are discharged in spaced pairs from carton making apparatus and transferred to receiving means on a conveyer at a different spacing (see Division B8). As described, cartons are stripped from a vertically aligned horizontally extending pair of mandrels on a turret and each is gripped by one of a pair of grippers on transfer means, the grippers moving apart to increase the spacing of the cartons during transfer and rotating the cartons through 90 degrees to bring their open ends uppermost. The cartons are then deposited, one at a time, in pockets of a conveyer, the pockets including gripper means and passing beneath a turret from which depend top closure prefolding elements. The conveyer and transfer means move continuously. Tubular cartons with closed bottom ends and top closure flaps are formed on mandrels 26 on a turret 28, Figs. 1, 4, the mandrels being in pairs, one below the orher and of known form. Each has a stop 140 adjustable along it for various carton sizes. Cartons are stripped simultaneously from a pair of mandrels by spring-biased pawls 78, Figs. 1, 3, 4, 5, pivoted at the ends of arms 73 which form part of a carriage 72. The carriage is reciprocated on rods 62 to withdraw the cartons, engaged by their closure flaps F1, F2, into guides 56 at the transfer station. The stroke is variable for various carton sizes. The pawls are capable of pivoting about axes at right-angles to those of their normal function in case the turret should move while the carriage is advanced.
Patent GB-874969-A (GB)
Title: Improvements in or relating to electromagnetic assembly control devices
IPC: H01F7/13
Filed: 1958-09-26
Abstract: 874,969. Electromagnets. SQUARE D. CO. Sept. 26, 1958 [Oct. 24, 1957], No. 30756/58. Class 35. [Also in Group XXIX] An electromagnet, e.g. for two-position control of a valve, has a laminated U-shaped core 16 between the limbs of which is arranged a spring-returned armature 26 rotatable through 45 degrees between stops 34. The armature has a central slot 89 by means of which it is slidably mounted on a flat rotatable tongue 58 (Fig. 2, not shown) so that, when the magnet is energized and the armature 26 reaches the stops 34 it can slide laterally on the tongue until one face contacts the ground flat inner surface 24 of one limb of the core 16. This, with shading rings 18, reduces hum when A.C. is used, and the resultant gap at the other limb prevents sticking. The energizing coil has a moulded covering 20 with terminal studs 22 which cooperate with spring-loaded terminals in a housing (Fig. 10, not shown) which is secured to the base 10. Preferred proportions of the armature for uniformity of torque are given.
Patent GB-1037189-A (GB)
Title: Machines for finishing gear wheels
IPC: H02P7/03
Filed: 1963-08-07
Abstract: 1,037,189. Gear-finishing. CARL HURTH MASCHINEN - UND ZAHNRADFABRIK. Aug. 7, 1963[ Nov. 21, 1962], No. 31114/63. Headings B3B and B3K. A machine for shaving, honing or burnishing gears has means for reversing the direction of rotation of the tool and workpiece after one or more gears have been plunger finished. The reversal may take place during work-loading. A stepping switch may control the direction of rotation.
Patent GB-1018918-A (GB)
Title: Improvements relating to liquid development of electrostatic images
IPC: G03G9/135
Filed: 1964-08-04
Abstract: 1,018,918. Electrophotographic developers. DENNISON MANUFACTURING CO Ltd. Aug. 4, 1964 [July 31,1963], No. 31156/64. Heading G2H. The latent electrostatic image in a surface comprising photoconductive particles suspended in an insulating, thermoplastic resin binder is developed by a liquid developer having toner particles suspended in an inert insulating liquid in which is dissolved terphenyl or hydrogenerated terphenyl acting as a fixative by dissolving the resin binder, the liquid finally being evaporated. A zinc oxide on paper photoconductive surface is sensitised by corona discharge and exposed to a light image before immersing in developer liquid comprises toner concentrate, odourless mineral spirits and ortho-terphenyl to give a positive print on air drying. A meta-terphenyl may be used. In one example, a large proportion of both terphenyls is used to give a tacky film on evaporation to which is then pressure laminated a transparent protective film. The composition of the toner concentrate is given. Terphenyl is also known as diphenyl benzene.
Patent GB-1262508-A (GB)
Title: Production of esters of carboxylic acids
IPC: C07C69/12
Filed: 1969-06-20
Abstract: 1,262,508. Carboxylic acid esters. BADISCHE ANILIN- & SODA-FABRIK A.G. 20 June, 1969 [21 June, 1968], No. 31220/69. Heading C2C. Carboxylic acid esters are prepared by reacting a ketene with an alcohol in the presence of a sulphide of a metal of Groups IB, IIB, IVA, VIB and VIII of the Mendeleef Periodic System and/or bismuth sulphide as catalyst. Sulphides of cadmium, copper, lead, nickel, molybdenum, cobalt, bismuth, zinc and tin are specified and ketene is preferred. Examples describe the reaction of ethylene glycol monoethyl ether with ketene to form ethylene glycol acetate monoethyl ether, and cyclohexanol sec.-butanol, and tert.-butanol with ketene to prepare the corresponding acetates.
Patent GB-275148-A (GB)
Title: Improved box for powder in compressed or compact form
IPC: A45D33/00
Filed: 1926-12-09
Abstract: 275,148. Veit, Son &. Co., Inc., (Assignees of Gaess, H. J.). July 29, 1926, [Con. vention date]. Fastenings for boxes.-A box for powder in compressed form is made of composition and the sections 2, 3, Fig. 1, thereof are secured in the closed position by a bulb 12 on a pin 11 fixed to one section engaging a split socket 13 in the other section. In a modification, Fig. 4, the lowest section 3<1> is pivoted to the middle section 4<1> by a vertical pin 11<1> and the hinge plates 6<1> are extended to form a prong 15 which snaps into a depression 16 in the rim of the section 3<1> to lock it in position when it is turned under the section 4<1>; the pin 11<1> is formed with a bulb 12<1> which engages a split socket in the top section 2<1>.
Patent GB-168546-A (GB)
Title: Improvements in connection with internal combustion engines
IPC: F01L1/10
Filed: 1920-11-04
Abstract: 168,546. Thomas, J. G. P. Nov. 4, 1920. Magnetos, driving.-In an internal-combustion engine in which an auxiliary shaft v, such as the magneto shaft, is driven bv two or more coupling rods h and corresponding sets of cranks or eccentrics e, f, g, and m, n, o, in order to permit of expansion the bearings of the driven shaft are carried by a lever s pivoted at t and the driven shaft is connected to the magneto shaft by an Oldham's coupling. When only two cranks or eccentrics are used, balancing weights are provided.
Patent GB-1094829-A (GB)
Title: Improvements in or relating to tool steel
IPC: C22C29/06
Filed: 1966-07-13
Abstract: A hardenable refractory carbide tool steel consists of 20-80% by volume of primary grains of one or more of TiC, VC, NbC and TaC distributed throughout a low-carbon age-hardenable steel matrix. The matrix steel preferably has the following percentage composition (by weight):- <TABS:1094829/C6-C7/1> Other metals and other carbides may be included. The components of the tool steel are sintered at 1300-1575 DEG C. and the product is solution treated at 760-1165 DEG C., air cooled and aged at 260-650 DEG C.
Patent GB-729953-A (GB)
Title: A process of preparing closed-cell, gas-containing bodies
IPC: C08J9/12
Filed: 1952-12-11
Abstract: Closed-cell bodies are produced from a mass of thermoplastic material containing a solvent and/or a plasticizer by introducing gas as an expansion agent into the mass, then heating the mass, cooling, relieving the mass from pressure and expanding it, the process being characterized in that the initial mass employed has a large surface area in proportion to its volume and is traversed by a multitude of air passages, and this mass is first mechanically compressed, then charged with a gas under pressure and thereafter heated while the pressure is still maintained.  The thermoplastic material may be a synthetic rubber, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer, polystyrene, an acrylic resin or a cellulose ester.  The plasticizer may be dioctyl-, dibutyl- or dimethyl-phthalate, tricresyl phosphate, or a sebacate, and the solvent may be acetone, methyl ethyl ketone, ethyl acetate or butyl acetate.  The starting material may be a powdery mass or a preformed porous body formed by loosely sintering together resins &c. containing solvents and/or plasticizers.  The gas used may be nitrogen, hydrogen or carbon dioxide.  A small amount, e.g. 1-2 per cent, of blowing agent such as azoisobutyrodinitrile or azoaminobenzene may be mixed with the starting material.  Specification 694,964 is referred to.ALSO:Closed-cell bodies are produced from a mass of natural or synthetic rubber containing at least a solvent and/or a plasticizer by introducing gas as an expansion agent into the mass, then heating the mass, cooling the mass, relieving the mass from pressure and expanding it, the process being characterized in that the initial mass employed has a large surface area in proportion to its volume and is traversed by a multitude of air passages, and this mass is first mechanically compressed, then charged with a gas under pressure, and thereafter heated while the pressure is still maintained.  The plasticizer may be dioctyldibutyl- or dimethyl-phthalate, tricresyl phosphate or a sebacate, and the solvent may be acetone, methyl ethyl ketone, ethyl acetate or butyl acetate.  The starting material may be a powdery mass or a preformed porous body formed by loosely sintering together the rubber containing solvents and/or plasticizers.  The gas used may be nitrogen, hydrogen or carbon dioxide.  A small amount e.g. 1-2 per cent, of blowing agent such as azoisobutyrodinitrile or azoaminobenzene may be mixed with the starting material. Specification 694,964 is referred to.
Patent GB-1391947-A (GB)
Title: Protection of refractory brickwork against corrosion
IPC: C21C5/44
Filed: 1972-07-05
Abstract: 1391947 Refractories AKADEMIA GORNICZO-HUTNICZA 5 July 1972 31512/72 Heading C1 [Also in Division F4]  A refractory composition for coating or repairing the linings of metallurgical vessels comprises 10-60% of the chloride of a bivalent element having an oxide with a melting point above 1900‹ C. and 40-90% by weight of hydrated or burnt lime, limestone, dolomite, magnesite, chrome ore quartzile or zircin or of a mixture of any of these materials. The chloride is magnesium or calcium chloride, and this reacts with the iron clay formed to give off ferric chloride fumes and so protect the vessel wall from the action of the clay.
Patent GB-1461706-A (GB)
Title: Steam turbine arrangement
IPC: F01D17/24
Filed: 1974-07-17
Abstract: 1461706 Automatic control WESTINGHOUSE ELECTRIC CORP 17 July 1974 [27 July 1973] 31571/74 Heading G3N [Also in Division F1] A steam turbine plant, Fig. 1, having a series of governor actuated valves GV1-8 controlling steam flow to respective admission arcs of the turbine 10 includes a protective control system for automatically transferring the valves from the partial to the full arc mode of control in response to steam flow related characteristics indicative of an excessive rotor blade loading condition. The protective control system 208, Fig. 11, forms part of a larger system incorporating a programmed digital computer (90), Fig. 4 (not shown) for overall plant control. The system 208 includes a valve contingency subroutine 220 which regularly compares the position demand and the actual feedback value of each governor valve. If the error signal is greater than a predetermined figure the system presumes a valve failed open or closed condition and, if the valves are operating in the partial arc mode, initiates a bumpless transfer to the full arc mode so as to reduce rotor blade loading. Warning lights flash on the operator panel 104. Valve position limit detectors (218), Fig. 10 (not shown) prevent mode transfer when the failure is in a valve feedback loop rather than in a valve or its servo-loop. The valve contingency subroutine 220 is illustrated in greater detail in Fig. 13 (not shown). The control system is provided with a manual control (65), Fig. 3 (not shown) for use when the automatic control is shut down. A manual tracker (67) ensures bumpless transfer between manual and automatic control and vice versa.
Patent GB-392604-A (GB)
Title: Tonometer
IPC: A61B3/16
Filed: 1931-11-16
Abstract: 392,604. Eye instruments. WOLINSKI, B., 62, Whitechapel Road, London. Nov. 16, 1931, No. 31610. [Class 81 (ii).] An instrument for measuring the intraocular pressure of the eyeball comprises a rod A slidably mounted in, and projecting slightly beyond, a sleeve B, itself slidable in a frame I. The rod A has a pointed end bearing against a weighted lever F movable over a scale G. The sleeve B has a collar C bearing against a lever D which carries a pointer E. In use the rod A is pressed into the eyeball and the position of the lever F noted when movement of the pointer E indicates contact of the sleeve B with the eyeball. Additional weights may be applied to the lever F if required.
Patent GB-808392-A (GB)
Title: Ethyl magnesium halides
Inventor: WHITING MARK CROSBY
IPC: C07F3/02
Filed: 1956-10-18
Abstract: The invention comprises ethynyl magnesium halides containing associated tetrahydrofuran.  They may be prepared by reacting alkyl, aralkyl or aryl magnesium halides (preferably dissolved in tetrahydrofuran) with a solution of acetylene in tetrahydrofuran, and maintaining a local excess of acetylene during the reaction. The complex may be isolated, or reacted with isolation with a carbonyl containing organic compound to yield an ethynyl carbinol.  In Example I ethyl magnesium bromide is prepared from magnesium and ethyl bromide using tetrahydrofuran as solvent, under a nitrogen atmosphere.  The solution so formed is added slowly to acetylene freed from acetone in tetrahydrofuran to yield ethynyl magnesium bromide.  Preparation of ethynyl carbinols.-Ethynyl magnesium chloride prepared as in Example I is reacted with butan-2-one in tetrahydrofuran to yield 3-methyl-pent-1-yn-3-ol.  Other compounds to which reference is made include MeEtC(OH).C ­ CH (from Me.CO.Et); Me.C (OH)(CH2Cl).C ­ CH (from Me.CO.CH2Cl); Ph2 CH.CH(OH).C ­ CH (from Ph2CH.CHO); CH3.CH ­ CH.CH(OH).C ­ CH (from CH3.CH ­ CH.CHO); Ph.CH = CH.CH(OH.C ­ CH (from Ph.CH = CH.CHO); and BuC ­ C.CH (OH).C ­ CH (from Bu.C ­ C.CHO).
Patent GB-959249-A (GB)
Title: Improvements in or relating to clutches
IPC: F16F15/129
Filed: 1962-08-17
Abstract: 959,249. Securing clutch plates on shafts. FICHTEL & SACHS A.G. Aug. 17, 1962 [Aug. 19, 1961], No. 31746/62. Heading F2U. A friction clutch plate 1 is yieldingly connected to a hub 5 by circumferentially disposed helical springs 4 received in apertures in the plate 1 and in apertures in guide plates 6, 7 which are non-rotatably mounted on the hub 5. The guide disc 7 is secured to the hub by rivets 12, and the disc 6 is axially slidably mounted on the hub by means of teeth 13 which engage teeth 14 on the hub. Annular friction discs 8 are located between the guide discs 6, 7 and reinforcing rings 3 fast with the clutch disc 1, and leaf springs 9 which are secured to the hub 5 by the rivets 12 bias the discs to gether to provide a friction coupling between the clutch disc and its hub to damp out oscillations. The friction discs 8 have apertures in the region of the springs 4 and provide relatively large friction faces giving effective damping and long life.
Patent GB-1350247-A (GB)
Title: Welding control apparatus
IPC: B23K11/24
Filed: 1971-07-07
Abstract: 1350247 Control systems for resistance welding WELTRONIC CO 7 July 1971 [24 July 1970] 31877/71 Heading H2H A resistance welding control system comprises a pair of back-to-back ignitions by means of which a welding load is connected to an alternating current source, means being provided to sense both the power factor of the load and the passage of the welding load current through its zero values, the signals produced by the sensing means being used to control a curve generating means which produces a curve having a preselectable constant characteristic portion and a portion having a selectably variable slope characteristic, the power factor sensing means initiating the generation of the preselectable constant characteristic portion of the curve and the zero crossing sensing means subsequently controlling the generation of the selectably variable slope characteristic portion of the curve, the curve being used to control the points in the half-cycles of the alternating current source such that the current and thus the amount of heat developed in the welding process are controlled. The control system enables a wide latitude in the selection of the firing angles thus allowing the ignitrons to be fired earlier in the half-cycles of the A.C. supply than is normal. Filters are provided to suppress transient conditions in order to improve the operation of the ignitrons and means are provided to prevent the firing of the ignitrons in the first half-cycle of the supply during an operation so as to prevent saturation of the transformers in the system; further means being provided to ensure that the ignitrons operate in a normal lead-trail mode. The control system is arranged for single and repeat operations and may be arranged to control two separate welding apparatus. A decade counting device is provided to time the various parts of a welding operation such as the presqueeze, squeeze, weld, hold and off periods. The control system comprises a plurality of transistors and thyristors. Specifications 1,067,893  and 1,199,429 are referred to.