baber/WOPTO huggingface dataset:
Patent GB-809177-A (GB)
Title: Pulse stretching phase detector
IPC: H03D13/00
Filed: 1957-02-05
Abstract: 809,177. Phase detectors. COLLINS RADIO CO. Feb. 5, 1957 [June 11, 1956], No. 3979/57. Class 40 (5). A phase detector maintains a high output impedance in the absence, of an input signal, transients being filtered by direct connection of a low-pass filter, which is thus not short - circuited between signals and maintains a D.C. voltage output between gated pulses. In the embodiment described a reference voltage is applied to the primary winding 11 of transformer 10, Fig. 1, having four secondaries 12, 13, 14 and 15. The first pair of secondaries are connected to a pair of series-connected diodes 22 and 23 the second pair being connected to a pair of series connected diodes 27 and 28 of opposite polarity, a D.C. bias voltage 31 being applied sufficient to render the diodes non-conducting in the absence of a reference voltage. When the reference voltage is applied the two pairs of diodes respectively conduct on positive and negative half-cycles, but only when the reference voltage has risen about the bias voltage, the opening of the diode impedances providing earth potential at points 47 and 49. When a received signal 45, 90 degrees out of phase with and having an amplitude smaller than that of the reference signal 17 is applied to transformer 41 to voltages at the centre tap 44 are equal and opposite, and have no D.C. component. When the phase difference varies from 90 degrees a D.C. component, whose magnitude depends on the extent, and whose polarity depends on the sense of the variation, is produced at point 44, and smoothed by low-pass filter 51. Provided the induced voltages in the secondaries of transformer 10 exceed the received signal 45 the conduction state of the diodes is a function solely of the reference voltage.
Patent GB-555590-A (GB)
Title: Improvements in machines for making stems for electric vacuum tubes and the like
IPC: H01J9/32
Filed: 1942-03-27
Abstract: 555,590. Incandescent electric lamps. STANDARD TELEPHONES & CABLES, Ltd. March 27, 1942, No. 4068. Convention date, March 29, 1941. [Class 39 (ii)] A turret machine for making the stems of incandescent lamps and the like (i.e. locating and sealing an array of wires 36 into a cup-shaped glass member 43 which forms part of the stem) conducts the operation in a series of eight stages and, between the heating stages at which the wires are fused into the glass mount, a shaped plunger 28 is automatically raised to restore the shape of the mount which becomes distorted by heat. The turret, Fig. 4, rotated counter-clockwise has a series of chucks. At stage 80 a glass mount already perforated to receive the wires is placed in a recess of the support 30 of the chuck, a series of wires 31 each in a guide tube having been already placed in position in the chuck. At station 82 cams on the rotating turret allow the arm 45 to swing into gripping engagement with the mount under the action of the spring 53 and hold it until the final stage. At stages 83 onwards, the chucks are caused to rotate by engagement of the gear wheels 72, 73 and heat is applied by gas jets 90 and from time to time the plunger which slides freely over the wires and their guide tubes is raised by the cam 25 engaging the nut 22 to restore the shape of the distorted mount.
Patent GB-1441905-A (GB)
Title: Method of making high strength cold reduced steel by continuous  annealing process
IPC: C21D1/18
Filed: 1975-01-30
Abstract: 1441905 Annealing steel sheet NIPPON KOKAN KK 30 Jan 1975 [31 Jan 1974] 4100/75 Heading C7A High strength cold reduced steel is produced from a composition containing in percentage by weight the soluble Al content preferably not exceeding 0À01%, by hot and cold rolling followed by a continuous annealing step in which the steel is heated to Ac, to 900‹C for 10-120 seconds, quenched by water jets and then reheated to 200-500‹C for 10-180 seconds followed by conventional cooling and coiling.
Patent GB-1428896-A (GB)
Title: Surgical drape
IPC: A61B19/08
Filed: 1974-01-29
Abstract: 1428896 Surgical drapes C R BARD INC 29 Jan 1974 [4 June 1973] 04168/74 Heading ASR A surgical drape comprises a cover 10, Figure 3, of non-woven material resistant to the passage of bacterial organisms, the cover having a fenestration 11 with an imperforate sheet 12 of thermoplastic elastomeric material secured by heat or adhesive to the in use under surface of cover 10 along a seal line 13 spaced from the edge of the fenestration 11 to form pockets 14, Figure 4, for the reception of absorbent material 15, the material of sheet 12 consisting of a block copolymer of styrene and butadiene with an elongation of between 800% and 1400% and upper and lower anti-skid surfaces. In use, a slit is cut in the sheet 12 and its sides 16', 16" are held open by retractors 17 to expose an operating site 18.
Patent GB-824540-A (GB)
Title: Improvements in or relating to the preparation of nitro compounds
Filed: 1958-02-10
Abstract: A process for the preparation of a nitroderivative of an alkane, cycloalkane or arylsubstituted alkane comprises introducing nitric oxide into an alkane, cycloalkane or aryl-substituted alkane in a reaction zone maintained at elevated pressure and at a temperature within the range of 160 DEG  and 300 DEG  C., the hydrocarbon being maintained substantially in the liquid phase.  In a modification of the process an alkane, cycloalkane or aryl-substituted alkane containing a substituent inert under the reaction conditions is employed as starting material. Representative of the starting materials specified are n-hexane, cyclopentane, cumene, nitrocyclohexane, chlorodecane and bromopentane.  The reaction may be pressurized with inert gas, the nitric oxide feed may be diluted with inert gases and the hydrocarbon may be diluted, e.g. with benzene or acetonitrile. Examples are furnished.  Specific products mentioned include nitrocyclohexane, primary and secondary mononitro-nonanes, a -nitro-p-xylene, 1-methyl1-nitrocyclohexane and the sec.-nitro derivative, and 1,3-dimethyl-1-nitrocyclohexane and the sec.-nitro derivative.  By-products mentioned include cyclohexyl nitrite and carbonyl and carboxy compounds.
Patent GB-747765-A (GB)
Title: Cation exchangers
IPC: C08F2/00
Filed: 1953-02-16
Abstract: Water-insoluble cation-exchange resins are made by copolymerizing in an aqueous medium in the presence of a polymerization catalyst at least one water-soluble ethylenically unsaturated polymerizable organic acid or salt thereof, e.g. acrylic, methacrylic and vinyl sulphonic acids, with an organic cross-linking agent containing at least two polymerizable double bonds, a polyfunctional compound capable of condensing with two reactive groups of the copolymer being added before, during or after the copolymerization.  Cross-linking agents specified are divinyl benzene, ethylene glycol dimethacrylate, 1,1,1 - trimethylolpropane dimethacrylate, triacryloyl perhydrotriazine and ethylene diacrylamide.  Polyfunctional compounds specified are ethylene glycol, trimethylol propane, glycerol, pentaerythritol, ethylene diamine, ethylene diamine acetate, ethanolamine, hexamethylene diamine, and formaldehyde.  The polymerizable mixture may also contain monomeric monoethylenic derivatives containing no free acid groups such as acrylamide, acrylonitrile, styrene, and vinyl chloride.  Potassium persulphate is specified as a polymerization catalyst which may be used alone or in admixture with potassium metabisulphite or formamidine sulphinic acid.  Polymerization is carried out in water, alone or in admixture with water-soluble solvents such as methanol, ethanol and acetone.
Patent GB-387134-A (GB)
Title: Improved construction of announcement or advertisement indicating mechanism
IPC: G09F23/16
Filed: 1932-02-15
Abstract: 387,134. Changing- signs. EVANS, E. W., 1, Chaloners Road, Braunton, Devon. Feb. 15, 1932, No. 4414. [Class 3 (i).] Endless-band display apparatus is controlled by the hammer of a clock gong. Fig. 4 shows two bands 23, 24 each mounted on a pair of rollers 21, 22, the bands showing numerals and mechanism being provided whereby the rollers are coupled together after every tenth movement of roller 23 so that all numbers up to "99" may be shown in succession. The bands are driven by a weight or spring motor 52, and are normally held from rotation by projections 27, 28 on the rollers 21, 22 engaging notched pivoted detents 31, 32. The gong hammer is coupled at 37a to a rod 37 carrying a cam which displaces the detent 31 and releases the roller 21 at each stroke of the hammer. A spring retracts the detent to retain the roller after it has made one revolution. The detent 32 is displaced by a prong on a tens wheel 43 and allows the roller 22 to slide laterally under the influence of a spring 58 and couple itself up to the roller 21 by pins 25 and holes 26. After one revolution the roller 22 is again caught and held by the detent 32, the notch in which is so shaped as to move the roller laterally out of engagement with the roller 21. A toothed clutch 45, 47 is introduced into the train conrolling the roller 22 to allow of relative adjustment of the bands 23, 24. The bands are tensioned by screwed nut and bolt displacement of the shaft carrying the lower rollers. In a modification one band only is provided.
Patent GB-179637-A (GB)
Title: Improvements relating to rotary printing machines
IPC: B65H7/20
Filed: 1921-02-07
Abstract: 179,637. Evans, A. B., and Payne, R. P. Feb. 7, 1921. Tripping, throw-out, and like arrangements.- In a rotary printing-machine, the tripping- mechanism for throwing the printing-cylinders out of contact is arranged to trip the means for raising the front stops and for actuating the grippers of the feed-cylinder, so that it is impossible to feed a sheet when the printing- cylinders are tripped. As shown in Fig. 1, the front stops for the feed are mounted on a shaft d which is oscillated to raise the stops by a lever f and a cam j when the grippers k, which are operated bv a cam r, are closed to grip a sheet to the feed cylinder m which transfers the sheet to the impression cylinder z. The cams j, r are mounted on a lever s which is normally moved to its operative position shown by a cam n<1>, lever k' and a pivoted hook f<1> which engages a pin w' on the lever s. When, however, the machine is tripped by moving a lever a', the hook f<1> is operated by a lever c', rod d' and spring h<1> to disengage the lever s which is moved by a spring y to cause its arm v to engage a stop x, and in this position of the lever s, the cam j fails to operate the front stops by raising them out of contact with the cylinder m, and also the gripper k is opened after passing the sheet so that it fails to take the same.
Patent GB-992537-A (GB)
Title: Polymerization process
IPC: C08F2/06
Filed: 1964-02-03
Abstract: A continuous process for solution polymerizing an olefinic compound of the formula CH2 = CHR, wherein R is hydrogen or an alkyl, aryl, cycloalkyl or haloaryl radical containing not more than 12 carbon atoms comprises polymerizing a stirred reaction mixture at a temperature just above the precipitation temperature of the polymer and controlling the monomer concentration in the reactor.  Polymers exemplified are homopolymers of propylene, butene-1, n-pentene-1, 3-methyl-butene-1, and n-octene-1; copolymers of propylene with ethylene, styrene, butadiene, and vinyl cyclohexane; and copolymers of butene-1 with p-methyl styrene, and n-pentene-1 with p-chloro styrene.  Catalysts exemplified are:  the reaction product of titanium trichloride, aluminium triethyl, thiocresol and lithium triethanolamine; TiCl4 + Al(C2H5)3; TiCl3 + Al triisobutyl; ZrCl4 + Al(C2H5)3; ZrCl3 + Al tributyl; n-butyl Li; LiAl(C2H5)4; and TiCl4 + Ti metal.  Many other monomers and catalysts are specified.  Suitable solvents are xylene or mixed octanes.  The polymers produced have a high isotactic content.  The polymerization is effected in a reactor under isothermal and essentially adiabatic conditions.  The temperature of the reactor is automatically controlled by simultaneously varying the monomer and solvent feed rates while maintaining the ratio of the two. The monomer concentration in the reactor is varied by adjusting the monomer/solvent feed ratio.  A flow diagram is given.
Patent GB-451863-A (GB)
Title: Improvements in traffic control systems
IPC: G08G1/08
Filed: 1935-02-12
Abstract: 451,863. Road signals for controlling traffic. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, Liverpool, and RENSHAW, A. P. B., Brookwood, Dickerage Road, Kingston Hill, Surrey. Feb. 12, 1935, No. 4530. [Class 118 (ii)] In a road traffic control system the detectors are placed beyond the stop line and traffic affects the time period of the succeeding cycle. The amber period is directly controlled by traffic flow. As described, the detectors comprise light beams which are projected diagonally across a crossing, the beam AB being used for N-S traffic and beam CD for the E-W traffic. With this arrangement traffic turning left does not break the beam whilst that going on or turning right does, a longer indication being given if the traffic has to wait. When a beam is interrupted a condenser, which is fully charged at the beginning of a " go " period, is allowed to discharge and this same condenser is used to measure the next " go " period for that direction of traffic flow, the condenser being then charged from its partly charged state to a condition causing a neon tube to strike. As its state at the beginning of a " go " period depends on the amount it was discharged during the preceding " go " period, which depends on the time during which the beam was broken in that period, a varying " go " period depending on the density of traffic is provided. As described, three condensers are used in turn for measuring the " go " period and the traffic flow in the lanes. The dete tors are set back from the curb so that pedestrians and vehicles are both included in the traffic flow. The amber period is timed by the condenser used to time the preceding "go " period. The condenser is discharged and then charged at a predetermined rate, the rate being reduced, and consequently the amber period increased, if either beam is broken during the amber period. The additional resistance is included in the circuit whilst the beam is broken so that the length of the amber period is directly controlled by traffic flow. Specification 451,921 is referred to.
Patent GB-641698-A (GB)
Title: Improvements in and relating to weighing machines or scales
IPC: G01G1/00
Filed: 1948-02-16
Abstract: 641,698. Weighing-apparatus. CAMPBELL ENGINEERING CO., Ltd., and FRAMPTON, K. P. Feb. 16, 1948, No. 4539. [Class 143] A pendulum counterbalanced weigh scale has two indicators operated by separate cams so that one indicates all loads up to the heaviest and the other light loads only. Journalled in a bracket 12 are spindles 14, 15 on which are pivotally mounted a pair of lever arms 18, 20 and a pair of guide links 22, 23, said pairs of levers and links being interconnected by spindles 26, 27 secured to a weigh pan supporting pillar 28. The right hand ends of the pairs of levers and links are connected with the pendulum weight 33 and cam followers 35, 36 respectively. Pivotally mounted on another bracket 13 are a pair of indicating arms 40, 41 which are integral with slotted cams 42, 45 engaging said followers 35, 36. In operation, small displacements of the mechanism are represented by large deflections of arm 40 and small deflections of arm 41 but large displacements are indicated by arm 41 alone, portion 44 of cam 42 then forming a lost motion connection between arm 40 and the movable links. Over displacement of the mechanism is prevented by a cushioned stop 50 engaging the pillar 28, and resilient pads 48, 34 prevent damage by sudden removal of the load.
Patent GB-1372894-A (GB)
Title: Paper shredder
IPC: B02C18/00
Filed: 1973-01-30
Abstract: 1372894 Paper shredders SPEED-O-PRINT BUSINESS MACHINES CORP 30 Jan 1973 [9 May 1972] 4626/73 Heading B2A A shredding apparatus comprises a pair of contra-rotatable rolls 1, 2, Fig. 1, supporting discs which are interdigitated. Each disc has two circumferential edges. In one embodiment, one edge 14 of each disc 9 of one roll is radiused. In all cases the other edges edges on one roll, Fig. 5, (not shown) or one edge on both rolls, Fig. 3 (not shown) may be radiused. In all cases the other edges are sharp. Each disc has a circumferential knurled ribbed or toothed or other friction surface of known type to facilitate the drawing of material through the rolls. Each roll 1, 2 has an associated comb 18, 19, Fig. 2, whose teeth are positioned between adjacent discs to prevent jamming. The combs are floatingly mounted and made of resilient material.
Patent GB-1448502-A (GB)
Title: Process for the preparation of mono or disazomethine dyestuffs
IPC: C09B55/00
Filed: 1974-02-01
Abstract: 1448502 Preparing azomethines HOECHST AG 1 Feb 1974 [14 June 1973] 04691/74 Heading C4P Mono- and disazomethines containing an OH group orthoto the azomethine linkage are prepared by condensing an aromatic o-hydroxy aldehyde with an aliphatic, cycloaliphatic, aromatic or heterocyclic monoamine or diamine or with hydrazine in a neutral aqueous medium under a nitrogen atmosphere. The reaction takes place using approximately stoichiometric amounts in aqueous supension or emulsion initially at 10-30 C. and then at 50-80 C. The reaction may take place under grinding conditions, a salt form of the mono- or diamine may be used and the free amine liberated by addition of an alkali. A dispersing or emulsifying agent may be present. The products are used to colour polymers, lacquers and printing pastes.
Patent GB-1471519-A (GB)
Title: Machine for forming individual masses of ice-cream
IPC: A23G9/24
Filed: 1976-02-09
Abstract: 1471519 Automatic ice-cream machine ICE CREAM ENG DI G TANARA & C sas 9 Feb 1976 [10 Feb 1975] 05014/76 Heading A2B Machines for inserting a stick of wood or synthetic material into a hardened creamy mass or an ice block or for stably fixing a hardened creamy mass or ice block on the top of a cone of edible biscuit material comprising a double chain conveyor 1 which travels through part of its path within a freezing chamber 14, transverse elements 9 being situated on said conveyor each consisting of a plate of elastomeric material 10 comprising recesses 11 of any shape or size and having walls relatively thin to the plate in combination with means 15-20 on opposite sides of said conveyor located downstream of the freezing chamber and arranged to act on said elastomeric recesses to deform them so as to cause them to assume a configuration symmetrical to their initial configuration and make them return to their initial configuration.
Patent GB-1375095-A (GB)
IPC: B28B5/02
Filed: 1972-02-03
Abstract: 1375095 Moulding plaster GENERAL ELECTRIC CO 3 Feb 1972 [23 June 1971] 5189/72 Heading B5A [Also in Division E1] Plaster formulation and water are mixed, deposited continuously on a moving conveyer belt, screeded, and before fully set receive supporting frames defining plaster wall and ceiling sections. A variable speed screw conveyer 12 (Fig. 1), mixes ingredients from hoppers 16-27. Water is admixed in a pin mixer 26 and the mixture discharged through tubes 34 on to the moving conveyer belt 32. A pulley 38 provides variable speed drive, and belt 32 is tensioned by mechanism 76 and cleaned by a spray and squeegee 78. The belt 32 comprises multi-ply webbing having a smooth or textured (rough, or simulated brick and wood) surface of polyester resin or stainless steel. The plaster is screeded by a flat plate 42 and its width determined by adjustable rubber or plastics side belts 44. Before the plaster is fully set, a crane lowers frames 56 from a stack on to the plaster. The plaster between adjoining frames 56 is broken off, and the sections separated by accelerator rollers 54 and stored vertically. The plaster is rendered, painted, and door holes, etc. cut. Materials.-The plaster formulation comprises basecoat plaster, sand, unexpanded vermiculite, cut glass fibres, wetting and foaming agents, water, and accelerators or retarders (potassium sulphate or gypsium). Ceramic or plastics tiles, paper, plastics or cloth sheets, and particles or chips of glass, sand or wood are fed on to the conveyer before applying the plaster. Examples are described. frames.-Each frame comprises members 62, 66, 68, 70, 72 (Fig. 6), of wood, metal or plastics joined by glue, nails or welding. Metallic lath 74 is stapled or welded to the members, which additionally support electrical or plumbing components (not illustrated). The frame includes removal cutters for aiding breaking off unwanted plaster from the surround or for windows, etc.
Patent GB-230615-A (GB)
Title: An improvement in variable electric condensers
Filed: 1924-02-29
Abstract: 230,615. Warbrook, F. G. Feb. 29, 1924. Condensers. - A variable condenser comprises a pair of electrically - c o n - nected, curved, resilient, :metal plates d, the curvature of which is adapted to be yaried by pressure applied to opposite edges thereof in a direction parallel to the chord of the arc assumed, by the plates so as to vary the distance between these plates and fixed plates forming the other element of the condenser. The fixed plates may be formed by the metal casing a' and its cover a<2>, Fig. 2, and the resilient plates d, covered by a sheet of mica d<1>, are disposed between insulating blocks b, c, the latter of which is adapted to be displaced to vary the curvature of the plates d. The displacement is effected by the screwed members e, f, the former being adapted to effect a rough adjustment and the latter screwing within the former to effect fine adjustment. The plates a<1>, a<2> may also be of a resilient character so as to be drawn inward to approach the plates d. In an alternative construction, Fig. 5, the fixed plates j are disposed between the resilient plates d, the curvature of the latter being varied by a nut h on a screwed stem g passing through the centre of the condenser.
Patent GB-179341-A (GB)
Title: Improvements relating to shaft gates for mining hoists and the like
IPC: B66B17/36
Filed: 1921-02-15
Abstract: 179,341. Castleman, F. M., and Mc- Kenzie, Holland, & Westinghouse Power Signal Co., Ltd. Feb. 15, 1921. Operating gates and barriers electrically and magnetically, and hydraulically and pneumatically.-A pit head shaft gate for mining hoists of the type shown is actuated by fluid pressure controlled electromagnetically. The upper crossbar 1 of each gate is either extended beyond the pivot 3 or provided with a crank arm 7. The piston rod 10 of each cylinder 11 is connected by a rod 9 to one of the arms 7 of the lower gate, and the rods 9 are linked by the rods 8 to the arms of the upper gate. The supply of pressure fluid to the cylinder 11 is controlled by an electromagnetically-actuated valve 12, the circuit of which may be controlled by hand. In a modification, one arm of a rocking lever pivoted at the side of the shaft entrance is connected to each piston rod, and the other arm is connected to each of the arms 7.
Patent GB-1274357-A (GB)
Title: Improvements in or relating to the treatment of irradiated nuclear fuel elements
Inventor: STRONG ROBERT EDMUND
IPC: G21C19/34
Filed: 1970-02-03
Abstract: 1,274,357. Removing canning from nuclear fuel. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 19 April, 1971 [3 Feb., 1970], No. 5227/70. Heading G6R. The treatment of an irradiated fuel element comprising ceramic fuel, e.g. an oxide, enclosed in a metal sheath, e.g. of stainless steel, consists of rupturing the sheath by subjecting the fuel element to local induction heating generated by a radio-frequency magnetic field. The crack formed in the sheath by the induction heating coil is extended by moving the fuel element axially relatively to the coil. Rupture of the sheath permits the fuel material to be dissolved out without shearing the fuel element into short lengths.