baber/WOPTO huggingface dataset:
Patent GB-1132675-A (GB)
Title: Improvements in speed control systems
Inventor: OWEN LOUIS LAMOIL
IPC: H02P23/00
Filed: 1967-02-22
Abstract: 1,132,675. Electric correspondence control systems. GENERAL ELECTRIC CO. Feb.22, 1967 [June 29, 1966], No. 8494/67. Heading G1N. [Also in Division H31 The speed of a gas turbine engine 10 (Fig. 1) is monitored by a tachogenerator 14, and at a predetermined maximum speed a solenoid 52 is energized to open a valve 15 which bleeds pressurized air from the compressor, causing the speed to be reduced to a substantially lower value before solenoid 52 is de-energized and valve 15 reclosed. The control system employs a magnetic amplifier 20 with gate windings 30, 32, control windings 42, 44, feedback windings 46, bias winding 48, and short-circuited winding 50 to prevent self-oscillation. The signal from tachogenerator 14, having an amplitude and frequency proportional to speed, is fed to a low Q series resonant circuit comprising inductor 68 and capacitor 70, resonating just beyond the maximum speed. Thus, as the maximum speed is approached the voltage across inductor 68 increases rapidly. This voltage is fed to an inductive circuit 72 and a resistive circuit 74. The impedance of the former circuit increases with speed due to the change in frequency, hence its output current, fed to control winding 42 is effectively constant with increasing speed. The impedance of the latter circuit is independent of frequency, hence its output current, fed to control winding 44, increases with speed. The two control windings are in opposition, and at the predetermined maximum speed their ampere turns are equal, so that the magnetic amplifier 20 develops a D. C. voltage across load resistor 38, sufficient to cause transistor 62 to conduct and energize solenoid 52. Feedback winding 46 escalates the change in output of the magnetic amplifier. The system is selfcompensating for varying temperature by temperature-sensitive resistor 86 in resistance circuit 74. This circuit also feeds biasing winding 48 to compensate for variations in A. C. voltage. The system is tested by operating switch 110, reducing the resistance of circuit 74 and increasing the ampere-turns of winding 44, thereby causing the magnetic amplifier to energize solenoid 52 at a lower speed.
Patent GB-180125-A (GB)
Title: Improvements in and relating to machines for making electric incandescent lamps and the like
IPC: H01K3/00
Filed: 1921-03-18
Abstract: 180,125. British Thomson - Houston Co., Ltd., (General Electric Co.). March 18, 1921. Forming electric lamps.-In a machine for making stems for tipless electric incandescent lamps of the kind described in Specification 147,293, means are provided for closing the clamps of the suporting-heads successively on to the several parts of the stems and for effecting the simultaneous opening of the clamps. The stem tube 78', the exhaust tube 98, the cane glass 59, and the leading-in wires are held respectively by clamps 80, 91, 52, 65, the arms of which are pivoted on common rods 53, 56. The leading-in wires are positioned in supports 110 on the clamp 80 and in guide-tubes 102 pivoted at their lower ends in a member 103, a yoke 104 drawn down by springs 106 tending to draw the upper ends of the tube 102 together. Springs 60, 86, 95 tend to close the clamps. The clamps 52, 65 can be opened either by a finger 57 secured to a vertical shaft 34 and acting upon a pin 58 to actuate links 51, 54 connected to the arms of the clamp, or by the operation of a bell-crank lever 45 by a link 43 pivoted to a sleeve 36 surrounding the shaft 34. These movements are effected by a handle 37 secured directly to the sleeve 36 and adapted to turn the shaft 34 through contacting fingers 39, 35. The clamps 80, 91 can be opened only by turning the shaft 34 to operate fingers and links similar to those serving to open the clamp 52, but relatively positioned so as to open or to close the clamps in succession. The cane glass 59 is positioned by a supporting-rod 105 which is raised into position by an incline 108 on the handle 37. This handle is moved to the left to actuate the rod 34 to open all the clamps, then the stem tube, the exhaust tube, and the leading- in wires are successively placed in position and the handle moved step by step to the right to close the clamps successivelv and to separate the guide-tubes 102, the handle is then moved farther to the right to reopen the clamp 52, the cane glass is inserted, and the handle return to close the clamp 52. When a stem is completed and the handle is moved to release all the clamps, a cam 73 carried by the sleeve 36 raises a rod 76 and pivoted fingers 77 which engage beneath the shoulder of the stem and lift it. Pairs of burners situated at several positions to which the stem parts are intermittently carried are mounted on bell-crank levers 117, 121, &c., connected together so that a single tappet 119, Fig. 2, operated by a cam 129 on a geneva stop gear 24 of the main driving-mechanism, swings all the burners out of the path of the clamps during their travel from one position to the next. The lever 121 also carries the pivoted members 135, which pinch together the fused ends of the stem parts; these members are actuated by links 137, a tappet 139 connected through a spring to a lever 144, a tappet 146, and a cam 148. The stem-supporting heads are mounted on a disc 31 which is rotated intermittingly from a worm-wheel 19 through geneva-stop gearing 24, 26<1>.
Patent GB-1022085-A (GB)
Title: Improvements relating to chains
IPC: F16G15/04
Filed: 1964-02-28
Abstract: 1,022,085. Chain couplings. Y. THELAN. Feb. 28, 1964 [March 9, 1963; July 31, 1963], No. 8541/64. Heading B8A. A chain coupling link 4 consists of two different diameter loops and an intermediate waisted portion so that an oval link chain may be passed into the larger loop 4a, Fig. 4, one of its links 5b slid through the waisted portion and the adjacent link 5a made to rest on the smaller loop so that when the chain is pulled along the axis V-V it will be held by the coupling link. Fitted on the narrower loop may be a pair of curved rigid prongs 8 (Fig. 6, not shown) for embracing the link 6a or a straight flexible element 14, Fig. 9, which wedges under it. The two loops of the coupling link may be in perpendicular planes, and in one such construction (Fig. 14) two coupling links are fitted backto-back as an adjustable chain tensioning coupling (see Division F2).
Patent GB-1490824-A (GB)
Title: Magnetic field intensity or gradient measuring probe
IPC: G01R33/04
Filed: 1976-03-05
Abstract: 1490824 Magnetic probe F FORSTER 5 March 1976 [26 April 1975] 08952/76 Heading G1N [Also in Division H1] A magnetic probe 1 for measuring magnetic fields or field gradients includes a magnetic core 2 consisting in a cylindrical body 19 of ceramic diamagnetic material having four holes 20 extending parallel to each other throughout the body in each of which holes a ferromagnetic wire 21 is disposed. A respective excitation winding 3 encompasses each core which is inserted into a tubule 6 and a receiver winding 4 encompasses the cores and excitation windings. In use the two excitation windings 3 are series-opposed whereby in the receiver winding 4 the fundamental components null, the generator 31 producing magnetic saturation of the two cores in alternation. The application of an external field produces an asymmetry of the magnetization characteristic resulting in a magnetic flux proportional to the external field and having the frequency of evennumbered harmonics of the generator 31 whereby harmonic voltages are produced in the receiver winding 4. The second harmonic is selected in a filter 33 and demodulated in a synchronous rectifier 34 supplied with a reference phase via frequency doubler 36 and phase shifter 35. Linearizing negative feedback is achieved by supplying the demodulated voltage to a winding 5 via amplifier 38.
Patent GB-424921-A (GB)
Title: An improved method of chlorination of wood pulp and like materials
IPC: D21C9/10
Filed: 1934-03-22
Abstract: <PICT:0424921/IV/1> Wood pulp &c. is chlorinated by dispersing gaseous, elementary chlorine under pressure in a liquid, e.g. water, in which it is relatively unreactive, in excess of the solubility of the chlorine in the water &c., bringing such chlorine water &c. into contact with the pulp &c. under less pressure, the chlorine being delivered into the pulp in a very finely dispersed condition, and being chemically absorbed thereby.  The chlorine under pressure passes through a valve 8 and pipes 6, 9<a>, 9<b> to ejectors 5 supplied with water through pipes 10, 11, the pressures being indicated by gauges 7 and 12 respectively, the mixture flowing through pipes 14 and perforated pipes or ejectors 4 to a conventional bellmer engine.  In an example, 5 tons of air-dried hemlock pulp is circulated once round the bellmer engine each 3\ba1/2\be--8 minutes and treated with 10 lbs. of chlorine per minute for 22--25 minutes at 35--90 DEG  F.
Patent GB-541368-A (GB)
Title: Improvements in or relating to cylinders for internal combustion engines operating on the two-stroke cycle
IPC: F02B25/00
Filed: 1940-05-22
Abstract: 541,368. Cylinder ports. SULZER FRERES SOC. ANON. May 22, 1940, No. 9074. Convention date, Aug. 4, 1939. [Class 7 (ii)] The piston-controlled ports of a two-stroke engine are arranged in three groups, namely a group 1 admitting scavenging-air normal to the cylinder axis, a group 2 admitting scavenging air in a direction towards the cylinder head, and a group 3 for exhaust. The group 1 is further arranged so that the air admitted thereby strikes the cylinder wall opposite at the part between groups 2 and 3, and then rises to the cylinder head, being deflected back towards the exhaust ports nearest the group 2, whereas the air entering by the group 2 passes directly to the cylinder head and is deflected back towards the exhaust ports nearest the group 1. Some or all of the ports in one or more groups may be subdivided horizontally, and some or all may be inclined with respect to the radii of the cylinders.
Patent GB-205767-A (GB)
Title: Improvements in or relating to tipping means for motor vehicles
IPC: B60P1/10
Filed: 1923-04-03
Abstract: 205,767. Boyer, W. April 3, 1923. Laminar springs of a tipping motor vehicle are connected to the body by means of pins g engaging in slots h in U-shaped brackets f.
Patent GB-1107816-A (GB)
Title: Radial-type piston pump
Inventor: REIFENBERGER KURT
IPC: F04B1/04
Filed: 1966-03-02
Abstract: 1,107,816. Reciprocating pumps. INDUSTRIEWERKE KARL-MARX-STADT V.E.B. March 2, 1966, No. 9142/66. Heading F1A. A radial-type pump for producing two separate delivery flows of different magnitude comprises two cylinder blocks 8, 9 rotatably mounted on a pintle valve 2 and connected by teeth 10 and recesses 11 so as to be non-rotatable relative to each other, the pintle valve having separate inlet and delivery passages for the cylinder blocks, or, alternatively, a common inlet passage. The stroke may be constant or adjustable by varying the eccentricity of races 13, 16 on either side of the pump axis, to give variable flow in either direction. Bushes 6, 7 are fixed to the cylinder blocks and may have end faces of bearing material, e.g. lead or bronze, for engaging collars 5, 19 on the pintle valve. The pistons are inclined as shown and engage surfaces on the races 13, 16 which are inclined, as shown, or parallel to the pump axis. The positions of the blocks may be reversed and the two rows of pistons may be in the small block and the single row in the large block. The block and piston sizes may be varied to provide different outputs.
Patent GB-1044130-A (GB)
Title: Multiple arc welding system
IPC: B23K9/10
Filed: 1965-03-04
Abstract: 1,044,130. Welding by fusion. WELDING RESEARCH Inc. March 4, 1965 [March 4,- 1964]; No. 9241/65. Heading B3R. [Also in Division H2] The torches 10 . . . 14 of an arc welding system are energized in sequence so that changeover from one torch to another occurs when no current is flowing to the torches. The arc at each torch is initiated and terminated by a known circuit and is maintained by a circuit comprising members 65 . . . 69, 73, 74. A timer 35 controls the rotatable arm 77 of a multi-contact switch 75 to selectively energize relays 20 . . . 24 which connect the torches 10 . . . 14 to the supplies 18, 65, the arrangement being such that the switch is operated after each initiation or termination of an arc to produce the following sequence:- (1) A silicon controlled rectifier 30 is fired after which relay 20 is energized. (2) After a predetermined time a thyratron 50 is fired to cut off rectifier 30 and initiate an arc at torch 10, after which relay 21 is energized, relay 20 remaining energized. (3) After another predetermined time the rectifier 30 is fired to terminate the arc, after which relay 20 is de-energized and relay 21 remains energized for repetition of steps (2) and (3) as applied to torch 11 and the other torches, Fig. 2 (not shown). The various time intervals may be chosen as desired. The operation of the known circuit is described, this circuit comprising the elements shown in the figure which are associated with members 30, 35, 50 and with the transformers 43, 53.
Patent GB-372496-A (GB)
Title: Improvements in the hydrogenation of hydrocarbons
IPC: C10G47/00
Filed: 1931-03-26
Abstract: In the destructive or refining hydrogenation of hydrocarbons boiling substantially between 60 DEG  and 325 DEG  C. and containing olefines and aliphatic and cyclic hydrocarbons which are more unsaturated than olefines, the formation of undesirable polymerization products is prevented by adding to the initial materials aromatic or saturated aliphatic hydrocarbons which are vaporous under the reaction conditions.  The addition may be made in such amount that the reaction mixture contains not more than 3 per cent, and preferably less than 1,5 per cent, of hydrocarbons more unsaturated than olefines.  Initial materials specified include benzines from cracked oil or from the low temperature carbonization of brown coal, or unsaturated middle oils; to these may be added saturated middle oils derived from mineral oils, or aromatic middle oils obtained by the destructive hydrogenation of tars above 500 DEG  C.  Suitable catalysts are metals of the 6th group, such as molybdenum, tungsten, chromium or their compounds, or cobalt or its compounds.  An example of the production of an anti-knock benzine is given.  Specifications 296,984, 327,194, 328,586, and 333,550, [all in Class 32, Distilling &c.], are referred to.
Patent GB-551499-A (GB)
Title: A new and improved method of manufacturing corrugated rubber tubing
IPC: B29C49/00
Filed: 1941-07-23
Abstract: 551,499. Moulding corrugated rubber tubing; vulcanizing. COW & CO., Ltd., P. B., and HUIZINGA, W. A. July 23, 1941, No. 9349. [Classes 70 and 87 (ii)] Corrugated rubber tubing, e.g. for respirators, is made by locating a tube of uncured rubber within a corrugated mould, supplying fluid under pressure to the interior of the tube so that the tube is expanded into intimate and direct contact with the mould, and then removing the rubber from the mould and curing it. Apparatus suitable for carrying out the invention includes a mandrel 5 having perforations 7 through which pressure fluid passes. The curing operation may be performed in two steps. First, the tubing is removed from the mandrel 5 and collapsed longitudinally (to make it less liable to deformation during vulcanization) with the aid of flanged rings which are placed over the ends of the tubes and secured together by a quick-release bolt ; the tube, disposed with its axis horizontal to ensure uniformity in the corrugations, is then partly cured, whereby it is given a slight set. Second, the partly cured tubing is threaded on a mandrel and pulled out to a length greater than the required finished length (to overcome the initial set given in the first step) and vulcanization is completed, thick tubes being held with the axis horizontal and thin tubes with the axis either horizontal or vertical. If one end of the finished tube is to be of different diameter from the other, e.g. to connect the filter box to the face piece in a "service" respirator, the flanged rings used in the first vulcanizing step may be fitted with bushes of the required diameters, and the mandrel used in the second step is provided at one or both ends with bushes to take the ends of the tubing. According to the Provisional Specification, the collapsed tubing may be held in the vertical position during the first vulcanizing step.
Patent GB-1382909-A (GB)
Title: Air filter assembly
IPC: B01D46/52
Filed: 1972-02-29
Abstract: 1382909 Air filter FARR CO 29 Feb 1972 [2 March 1971] 9417/72 Heading BIT An air filter for an I.C. engine intake comprises a flat rectangular metal casing (Fig. 4, not shown) enclosing a plurality of generally flat pleated filter paper elements arranged in pairs, each pair being bonded to upright end plates 33a to form an elongated closed loop, the inlet spaces 46 between pairs being open at inlet end 24 of the casing and the outlet spaces 37 within the loops aligning with outlet apertures 42 in the casing floor (36). The paper has corrugations running perpendicularly to pleat fold lines to space the pleats apart. The filter is mounted in use on an outlet plenum (49) which connects apertures 42 to the engine intake. The pleated edges of the elements are bonded to the top and floor of the casing by cured flexible plastic, which minimises the effect of engine vibrations on the paper and bonds.
Patent GB-996335-A (GB)
Title: Methods of and apparatus for mounting electrical components
IPC: B29C33/40
Filed: 1962-03-13
Abstract: 996,335. Moulding moulds for mounting electrical components. WESTERN ELECTRIC CO. Inc. March 13, 1962 [March 13, 1961; March 15, 1961], No. [9509/62. Heading B5A. [Also in Division H1] Electrical components, each having at least one relatively rigid lead, are mounted by supporting the components in a predetermined spatial relation by the free ends of their leads in a removable masking material, casting a panel of insulating material around other portions of the leads, and stripping off the masking material to produce a rigid panel 21, Fig. 5, having components 20, e.g. resistors and capacitors, on one side, and the free ends of their leads 23 on the other. In Figs. 3, 4, a mould 11<SP>1</SP> of transparent thermoplastic material, e.g. modified cellulose acetate butyrate (itself cast in a master mould, Fig. 1, not shown) is placed on a pictorial representation 18 of the desired positions of components 20, and the free ends of leads 23 are inserted into the mould material in accordance therewith; alternatively, the positions of the components may be marked on the mould. A plastic material 21<SP>1</SP>, e.g. a cold casting epoxy resin, is poured into the mould and allowed to harden; this may be accelerated by the application of heat. The mould is then removed, the holes pierced therein by the leads being self-sealing.
Patent GB-309582-A (GB)
Title: Catalytic oxidation of ammonia
IPC: C01B21/26
Filed: 1929-03-26
Abstract: 309,582. Selden Co., (Assignees of Jaeger, A. 0.). April 14, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Catalysts for the oxidation of ammonia to oxides of nitrogen comprise a diluted or undiluted non-siliceous base-exchange body in which the catalytically active components may be present in chemical combination in exchangeable or non- exchangeable form or may be present as diluents. Stabilizers, consisting of alkali or alkaline earth metal compounds, and stabilizer promoters, consisting of substances possessing general catalytic activity but not specific activity for this reaction, may be added to the contact mass. The baseexchange bodies may be prepared by the methods set forth in Specification 286,212. Impure ammonia may be used, and the impurities are converted by oxidation into harmless products either simultaneously with the main reaction or in a separate stage conducted at a lower temperature. In the latter case base-exchange bodies may serve as the catalyst in either stage or both stages.
Patent GB-1063043-A (GB)
Title: Phase-correcting device in beam-indexing color television receiver
IPC: H04N9/24
Filed: 1964-03-06
Abstract: 1,063,043. Colour television. HITACHI SEISAKUSHO KABUSHIKI KAISHA. March 6, 1964 [March 8, 1963], No. 9663/64. Heading H4F. In a beam-indexing colour television receiver phase errors in the colour signal due to deviations of the indexing signal frequency caused by fluctuations in the pitch of the index strips, fluctuations in the horizontal scanning velocity and the group delay time of the signal transmission system from terminal 3 to terminal 17, are reduced by means of an automatic phase correcting device which comprises a frequency multiplier 8 connected to the beam-indexing signal amplifier 7. The frequency multiplier 8 comprises a phase detector 113, a variable frequency oscillator 117 which oscillates at a   median frequency of 1/m.<SP>w</SP>co (<SP>w</SP>co = indexing signal frequency; m/n = ratio of the pitch of the groups of coloured phosphor strips to the pitch of the index strips), an m-times frequency multiplier 114 and an n-times frequency multiplier 119. A portion of the output signal from the phase detector 113 corresponding to the difference from the median frequency of the index signal frequency as detected by the phase detector 113 is amplified by an amplifier 112 and used as the phase control voltage of a variable phase shifter 111 to rotate the phase of the chrominane-carrier reference wave w sc  in such a direction as to reduce the phase error of the colour signal. The output phase of the mixer 9 similarly changes, mixer 9 having applied to it from multiplier 8 a signal of approximate frequency n/m<SP>w</SP>co = w c , the repetitive frequency with which the electron beam impinges on similar phosphor strips. The output from mixer 9 is then mixed in frequency mixer 12 with the chrominance signal w s  to provide a colour signal of frequency w c  at output terminal 14 which when added to signal M in adder 15 produces the required dot sequential colour signal.
Patent GB-946491-A (GB)
Title: Improvements in or relating to isophthaloyl chloride production
IPC: C07C51/60
Filed: 1961-03-16
Abstract: Isophthaloyl chloride is produced by reacting molten a ,a 1-hexachloro-m-xylene with a substantially equimolar amount of isophthalic acid at a temperature of 70 DEG  to 150 DEG C. in the presence of a condensation catalyst to form crude isophthaloyl chloride, distilling the crude isophthaloyl chloride under an absolute pressure of 20-50 mm.  Hg, separating a distillate forecut amounting to up 10% of the crude isophthaloyl chloride and collecting the balance of the distilled isophthaloyl chloride as a product having a purity of at least 97% and a melting-point of 41 to 43 DEG C. Specified condensation catalysts are ferric chloride, zinc chloride, ferrous sulphate, sulphuric acid and iron. The a ,a 1-hexachloro-m-xylene used may be the crude product obtained by photochlorination of m-xylene, without purification. The forecut may be recycled to the distillation stage.  The process is preferably carried out continuously and suitable apparatus is described.  In examples the preparation of isophthaloyl chloride and also of a ,a 1-hexachloro-m-xylene by photochlorination of m-xylene in carbon tetrachloride and in triphenyl phosphate, is described.