baber/WOPTO huggingface dataset:
Patent GB-189903-A (GB)
Title: Improvements in and relating to magneto-electric machines
IPC: H02K21/22
Filed: 1921-09-20
Abstract: 189,903. British Thomson - Houston Co., Ltd., and Young, A. P. Sept. 20, 1921. Magneto - electric machines.-A fly-wheel for a magneto-electric machine comprises magnetic polepieces, cast in or otherwise secured to a non-magnetic rim, and bar magnets of highly magnetic material, for example cobalt steel, connect the pole-pieces to a magnetic boss to complete the magnetic circuit. Fig. 2 shows pole-pieces 1 and magnets 4, the circuit of which is completed by the steel boss 3.
Patent GB-518419-A (GB)
Title: Process for charging cylinders for the storage of acetylene in solution
IPC: C10L3/04
Filed: 1938-08-24
Abstract: 518,419. Storing acetylene. GES. FUR LINDE'S EISMASCHINEN AKT.-GES. Aug. 24, 1938, No. 24930. Convention date, Sept. 2, 1937. [Class 8 (ii)] [Also in Group IV] In the storage of acetylene in solvent such as acetone, in cylinders, the acetylene is charged with vapour of the solvent before introduction with the cylinders. The charging may be effected by a trickle tower, or a bubble washer, or by a spray injected with gas. The amount of acetone &c, introduced should not exceed that carried off during the previous charge.
Patent GB-1404280-A (GB)
Title: Beading cli
IPC: F16B5/12
Filed: 1973-05-25
Abstract: 1404280 Clips UNITED-CARR LTD 11 April 1974 [25 May 1973] 25093/73 Heading E2B A beading clip 10 adapted for attachment to a headed stud 23 projecting from a supporting surface 24 and adapted to clamp a beading 27 to the surface, comprises an arched body portion 11 having a slot 12 extending into one side thereof and along which the shank 23 of the stud can pass, and at least one leg 15 extending in a direction parallel to the slot. the leg or legs being spaced from the body portion and arranged to engage the surface 24 so that the leg or legs and the body portion of the clip are compressed between the surface and the head 22 of the stud; abutments 17, 18 and 20, 20a are carried on opposite sides of the body portion and are adapted to clamp the edges 28, 29 of the beading to the surface 24.
Patent GB-781853-A (GB)
Title: Improvements in and relating to telephone systems and apparatus
Inventor: ROMMEL FREDERICK EMIL
IPC: H01H67/22
Filed: 1953-09-11
Abstract: 781,853. Automatic exchange systems. TELEPHONE MANUFACTURING CO., Ltd. Sept. 10, 1954 [Sept. 11, 1953], No. 25185/53. Class 40 (4). A finger magnet type of bar relay as described in Specifications 686,751, 728,891 781,851 and 781,852 has an additional finger magnet which controls whether the upper or lower contacts of a multiple contact set shall be electrically operative. Construction. Contacts 1-5 and 6-0 are arranged in separate levels, contacts 1 and 6 being operated when finger magnet FM1/6 and main magnet BM1 energize. An additional finger magnet FMLS determines whether the contacts at the right-hand side of the bridge shall connect with contact strips SW1-SW3 or SW4-SW6. An additional finger described in Specifications 781,851 and 781,852, has no magnet and operates the off-normal contacts bm1/1 when the main magnet energizes. Line finder. When the subscriber on line 1 closes his loop relay L1 energizes to energize the finger magnets FM1/6 of all the bridges in a multiple in series with preselector start relay STA. Contacts l1/1 disable the circuits of all succeeding finger magnets while STA disables the circuit of STB. STA energizes trunk searcher start relay ST which connects the test wires of related trunks to test relays SSA, SSB, &c., the first idle relay, say SSA, pulling up to disable later circuits. Contacts t1 earth the P wire of the selected trunk to energize the main magnet BM1 of the corresponding bridge. The armature of the main magnet engages the finger moved by the finger magnet FM1/6 to close the contacts 1, 6, so extending the calling line over the lower contact strips and contacts SW1- SW3. The subscriber's cut-off relay K pulls up to restore L1, energize line relay A and guard relay B. B earths the P wire and releases the trunk test circuit. L1 releases the preselector circuit. For subscribers 6-10 the operation is as described above except that STB operates instead of STA to energize additional finger magnet FM-LS, whereby the calling line is extended over the upper contact strips and contacts SW4-SW6.
Patent GB-518584-A (GB)
Title: Improvements in, or relating to, mechanism for operating the covers or roofs of furnaces and the like
IPC: F27D1/02
Filed: 1938-08-27
Abstract: 518,584. Hydraulic motors. SADLER, A. L. (Pittsburgh Lectromelt Furnace Corporation). Aug. 27, 1938, No. 25201. [Class 69 (ii)] [Also in Group XII] A furnace cover or roof a is raised from the charging opening by a fluid pressure operated vertical ram b and then moved laterally by a fluid pressure operated horizontal ram f. The tapered head h of the ram b engages with an opening i in the cover a and is provided with a projection j to engage with teeth k on the cover. When pressure fluid is admitted to the base of the cylinder c the ram b is raised to lift the cover. At the end of its upward stroke the skirt m of the ram engages with a catch d which controls interconnected valves, one of which cuts off pressure fluid from the cylinder c and the other admits pressure fluid through a hand operated valve to the horzontal cylinder e to operate a ram f which is provided with a toothed rack g. The rack g engages with a pinion g<1> to rotate the ram b through keys p which slide in grooves b' when the ram b is raised and lowered. The rotation of the ram b effects lateral movement of the cover a away from the charging opening.
Patent GB-619978-A (GB)
Title: Improvements in or relating to the driving of supercharging compressors for internalcombustioin engines
IPC: F02B33/00
Filed: 1946-08-23
Abstract: 619,978. Variable-speed gearing. SOC. ANON. A. CITROEN. Aug. 23, 1946, No. 25239. Convention date, Sept. 7, 1945. [Class 80 (ii)] [Also in Group XXVII] A Roots' blower 2 is driven from the sun wheel 15 of a differential gear, the planet carrier 11 of which is connected to the output shaft 12. The engine fly-wheel 6 drives the planets 9 through the other sun wheel, and the clutch is located between the shaft 12 and a gear-box. In a modification a throttle valve in a byepass round the blower 2 allows the torque absorbed by the blower to be adjusted, thus rendering the clutch unnecessary, the gearbox being then associated with the differential gear casing. Specification 446,572, [Group XXVII], is referred to.
Patent GB-851628-A (GB)
Title: Improvements relating to change-speed gear
IPC: F16H47/10
Filed: 1958-08-07
Abstract: 851,628. Hydro-mechanical variable-speed gear. DAIMLER-BENZ A.G. Aug, 7, 1958 [Aug. 7, 1957], No. 25313/58. Class 80 (2). [Also in Groups XXIX and XXXIV] A change-speed gear for vehicles comprises an hydrodynamic torque converter 10 the pump 20 of which is driven by a planet carrier 39 of an epicyclic gear 11 having a ring gear 16 fast with an input shaft 14; the ring gear and sun gear 22 being fast with the pump 17 and turbine 24 respectively of a turbo coupling which is filled to drive the ring and sun gears at the same speed to lock the epicyclic gear so that the pump 20 of the converter is driven at the speed of the input shaft, and is emptied to give reduced ratio drive of the pump 20, the ring gear being held stationary by a free-wheel 26. The converter turbine 29 is fast with a driven shaft 30 which can be clutched to an output shaft 34 by a clutch 32 for direct drive, and which drives the output shaft 34 in reverse on disengaging clutch 32 and engaging a clutch 62 to lock the planet carrier of an epicyclic gear 12 having a sun 31 fast with the driven shaft 30 and a ring gear fast with the output shaft 34. In order to provide hydrodynamic as well as engine braking, the ring gear 22 and turbine 24 are held stationary by engaging a clutch 25. The engine and pump 17 are driven by way of epicyclic gear 11 from the torque converter with a stepped-up speed of rotation. The hydrodynamic braking can be adjusted by regulating the filling of the turbo coupling, this is effected by controlling the rate of supply of liquid; the pressure in the coupling opens a throttle valve (not shown) so that a constant flow is provided through the coupling for cooling purposes. The coupling is supplied with liquid through a duct 58, the pressure in the duct moving a piston valve 57 inwardly to close an exhaust port 60. If the pressure in the duct is removed, e.g. by kick down, piston 57 flies outwards under spring and centrifugal action, so that port 60 is opened to rapidly empty the coupling. The coupling pump 17 is secured to the torque converter housing 15, which is fast with the input shaft, by means of a sleeve 36 having a flange 37 secured to the housing 15 by bolts 38 which also secure the ring gear 16, the flange 37 is of sufficient diameter to allow the epicyclic gear 11, and other parts subject to wear, to be removed from the housing.
Patent GB-1173070-A (GB)
Title: Method for Mechanized Production of Building Elements of Aeroconcrete having Hollow Spaces, and a Plant for Carrying Out this Method
Inventor: LANZ WALTER
IPC: B28B1/50
Filed: 1967-07-01
Abstract: 1,173,070. Plant for porous concrete articles with hollow spaces. W. LANZ. 1 June, 1967 [8 June, 1966],, No. 25332/67. Heading B5A. Building elements of porous concrete with hollow spaces are made by placing mould walls on a mould base, filling the mould with unfoamed concrete, inserting mould partitions and cores, passing the moulds to an unloading station during which time the concrete foams and stabilizes, and removing the cores, mould partitions and mould sides, which are returned to the starting point, the concrete elements being left on the mould bases to harden fully. As shown, mould bases 3 are fed on to a working table 1 and moved stepwise by piston 2 to position B where the mould sides are added. Concrete components from containers 11, 12 and 13 are mixed in mixer 6, a blowing agent is added from container 15, and the unfoamed mixture passes into the mould at C. The mould is moved on to position D where the mould divider and core assembly 8 is placed into the filled mould (position D). From there the mould is moved continuously along conveyer 9 to the unloading station 16, the transit time being sufficient for the concrete to foam and become self supporting. The moulds are passed under a knife blade 18 which levels the concrete with the top of the mould and the mould division and core and the mould sides are then lifted off and placed on conveyers 23 and 24 respectively. The mouldings on mould bases 3 are stacked at stations 19 and 20 and are removed to storage for setting. The mould sides and partition are cleansed at 25, greased preferably with a spray of a fat-oil mixture at 26 and returned to the loading station. The foamed concrete mix used preferably contains 32-39 wt. per cent cement, 39-32 wt. per cent sand, 25-30 wt. per cent water and at least 0-5 wt. per cent expanding agent, the mixture having a temperature of 28-35‹ C.
Patent GB-1416097-A (GB)
Title: Solar cell with tantalum pentoxide anti-reflective coating
IPC: H01L31/0216
Filed: 1973-05-30
Abstract: 1416097 Solar cells COMMUNICATIONS SATELLITE CORP 30 May 1973 25666/73 Heading H1K A solar cell 1 responsive to light in the 0À3- 0À5 Á wavelength range has an anti-reflective coating 6 of substantially amorphous tantalum pentoxide (Ta 2 O 5 ) produced by thermal or anodic oxidation of an evaporated Ta layer and having a refractive index of 2À25. In the embodiment the Si cell 1 has a shallow P-N formed by P-diffusion, and the illuminated surface carries, in addition to the anti-reflective coating 6, a metal grid 5 of evaporated Cr and Au with an electro-plated covering of Ag, and an optional quartz cover slide 7. Several alternative photolithographic methods are described for defining the areas of the anti-reflective coating 6 and metal grid 5. The outcomes of these methods are variously that the metal grid 5 and intervening Si surface are entirely covered with Ta 2 O 5 , that the Ta 2 O 5  just fills the gaps in the grid 5, or that the grid 5 covers unoxidized elemental Ta while the Ta not so covered is converted to Ta 2 O 5 .
Patent GB-916435-A (GB)
Title: Improvements relating to high linear condensation polymers
Inventor: BEAMAN RALPH GARDNER
IPC: C08G69/26
Filed: 1960-07-22
Abstract: Polymers containing repeating units of the formula <FORM:0916435/IV(a)/1> where X is oxygen or sulphur, R2, R3, R5 and R6 are hydrogen or alkyl groups containing from 1 to 4 carbon atoms and Y is a divalent organic radical are made by reacting a 1:4-diaminopiperazine with a compound of the formula -CX.Y.CX- wherein the free valency in the -CX- radicals is occupied by a groups or atom such that radical as a whole is capable of reacting with an amino group to form an -NH-CX- linkage.  Specified reactants include aromatic based diisocyanates, the reaction products of bis-chloroformates of glycols with primary or secondary diamines, low molecular weight polyesters, polyolefines terminated with amino, acid chloride or diisocyanate groups, polysiloxanes, polyalkylene oxides and esters thereof and polyformals.  The polymers are soluble in organic polar solvents, e.g. m-cresol, formic, trifluoracetic, dichloracetic and sulphuric acid, dimethyl formamide, dimethyl acetamide, dimethyl sulphoxide, tetramethylene sulphoxide, N-methyl-pyrrolidone, tetramethlene urea and dimethyl tetramethylene sulphone.  In the examples, -1:4-diaminopiperazine is reacted with a reaction product of poly(tetramethylene oxide) glycol, 4-methyl-m-phenylene diisocyanate and methylene bis(4-phenylisocyanate; (II) 1:4-diaminopiperazine is reacted with methylene bis(4-phenylisocyanate); (III) 1:4-diaminopiperazine dihydrochloride is reacted with hexahydroterephthaloyl chloride; (IV) 1:4-diamino-2:5-dimethyl-piperazine is reacted with terephthaloyl chloride; (V) 1:4-diamino-2:5-dimethyl-piperazine is reacted with dibenzoyl chloride; (VI) hydrazine, N:N1-diamino-piperazine and N:N1-diamino-2:5-dimethyl piperazine are reacted with a reaction product of tolylene-2:6-diisocyanate or methylene bis(4-phenylsocyanate) a polyether urethane glycol derived from poly (tetramethylene oxide) glycol and tolylene-2:4-diisocyanate and (VII) methylene-bis(4-phenyl isothiocyanate) and diaminopiperazine. Examples (VIII) to (X) describe the formation of chelate compounds by the addition of:-(VIII) crystalline nickel chloride; (IX) copper chloride and (X) lead nitrate to solutions of the polythiohydrazide of Example VIII in dimethyl formamide or dimethyl sulphoxide. Specifications 849,154 and 881,635 are referred to.ALSO:Methylene-bis-(4-phenyl isothiocyanate) is made by reacting thiophosgene with 4:4-diaminodiphenyl methane in the presence of chloroform and ice water, the product being recrystallised twice from a mixture of cyclohexane and benzene.  Specifications 849,154 and 881,635 are referred to.
Patent GB-719904-A (GB)
Title: Improvements in or relating to high frequency oscillation generating circuits
IPC: H03C3/09
Filed: 1952-10-14
Abstract: 719,904. Frequency modulation ; valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Oct. 14, 1952 [Oct. 25, 1951], No. 25759/52. Classes 40 (5) and 40 (6) In an arrangement for producing frequency modulated high frequency oscillations wherein an oscillator determines the mean frequency and is provided with an amplifier in the feedback circuit for maintaining oscillations, at least one of the stages of the feedback amplifier has an output impedance which is substantially capacitive in order to provide a 90 degrees phase shift. By this means the effect of small capacitance variations due to exchanging valves &c. on the phase shift in the feedback amplifier is minimized. As shown in Fig. 1 a valve 1 is loosely coupled to a frequency determining circuit 2, which may be crystal controlled and feedback is provided by an amplifier 3 whose output is fed back to the grid of valve 1. The feedback voltage is also applied through a circuit 5, producing a phase shift of 90 degrees to a valve 4 which is modulated by a signal Um, the resultant oscillations supplied to circuit 2 varying in phase in accordance with Um and thus producing a variation of frequency in accordance with the signal Um. In the feedback amplifier, Fig. 2, Ca represents the effective self-capacitance of the anodes of valves 8 and 9 to earth, and since the anode resistance 11 is large compared with the reactance of Ca the effective output impedance of the valve 8 is substantially the capacitive reactance of Ca. Adjustable resistors 10 and 12 enable the phase shift to be set to the required value for each stage. In valve 9 amplitude limitation is effected by grid rectification, the meter 13 providing an indication. The resonant frequency of the circuit 14, 15, which incorporates the capacitance Ca, is arranged to be below the operating frequency so that it operates near quadrature. The method of adjusting the amplifier consists in adjusting the phase shift until a minimum of amplitude modulation is present, which may be detected by means of telephones inserted at 16.
Patent GB-425455-A (GB)
Title: Improvements in alloys for the manufacture of permanent magnets
IPC: C22C38/10
Filed: 1934-09-07
Abstract: Iron alloys for permanent magnets contain 10-35 per cent of nickel, 5-20 per cent of aluminium, 0,5-15 per cent of copper, and 0,5-15 per cent of cobalt, with or without up to a total of 5 per cent of one or more of the elements chromium, manganese, molybdenum silicon, titanium, uranium, vanadium, and tungsten. The ratio of cobalt to copper is preferably between 5 : 1 and 1 : 2.  The copper may be wholly or partly replaced by silver or tin or both.  Carbon may be present up to about 1,5 per cent.
Patent GB-1144476-A (GB)
Title: Improvements in or relating to the preparation of ceramic kaolins and clays
IPC: C04B33/13
Filed: 1966-06-10
Abstract: 1,144,476. Treating clays. J. BABUREK, D. SVOBODA, S. DRAHNY, and V. RADIMSKY. 10 June, 1966, No. 25877/66. Heading C1A. [Also in Division D2] Kaolins and clays for use in producing ceramic articles and as a filler for paper are processed by kneading a clay with a moisture content from 15-40% with successive additions of 0À1 to 3À0% of an alkali metal salt (preferably carbonate) (based on the weight of dry kaolin) and/or 0À01 to 3À0% of an alkali metal salt of an organic acid (preferably humate); grinding being effected at the same time. The flexural tensile strength of the clay is increased and its viscosity under working conditions decreased by this method.
Patent GB-232510-A (GB)
Title: Improvements in barometric pressure indicating instruments
IPC: G01L19/08
Filed: 1924-10-31
Abstract: 232,510. Spinney, R. D. Oct. 31, 1924. Index hands and pointers.-Relates to instruments employing a pointer for indicating the direction of change of barometric height, such pointer being limited in movement bv stops and controlled by a friction device; and consists in the provision of a flexible or rigid driving member in frictional contact with a rolling member connected to the indicating pointer. The lever c moved from the aneroid box a is attached to one end of a cord d arranged toggle fashion, the other end of which is attached to the frame. A friction member in the form of a flexible cord f is attached at one end to the junction of the toggle d and at the other end to a spring g which keeps the cord and toggle taut. The cord f is in frictional contact with a spindle i carried on a bearing j and carrying an indicating pointer k the movement of which is limited by stops l, l. In another arrangement, the spindle of a barometer carries friction discs which rotate the spindle of the direction pointer. In a third form, the friction member is in the form of a plate between which and a fixed plate is arranged the spindle of the indicating pointer.
Patent GB-950160-A (GB)
Title: Refrigerator control apparatus
Inventor: CROWLEY JAMES MALCOLM
IPC: F25B49/02
Filed: 1962-07-06
Abstract: 950,160. Thermal switches. RANOC Inc. July 6, 1962, No. 25980/62. Heading H2B. To effect quick-freezing a refrigerator controller comprises, in addition to a first thermally responsive device which actuates a switch to maintain normal temperatures, a second thermally responsive device which when a predetermined lower temperature has been reached, trips a latch holding a blocking member in a position to maintain the switch closed, and allows the switch to open. A first thermally responsive capsule 34 acts on a lever 30 pivoted at 37 to actuate contacts 19, 22 through a spring toggle 24, 26 to maintain normal refrigerating temperatures. The normal temperature is set by a cam 49 which bears on one end of a lever 41 which carries a spring 35 biasing lever 30 anti-clockwise. In order to quick-freeze a button 76 is depressed causing a blocking member 55 to engage an extension 57 of lever 30 and prevent contacts 19, 22 from opening. The blocking member 55 is retained in position by a spring-biased latch 60 which is tripped by a lever 63 when the temperature sensed by a second capsule 71 falls to a predetermined level. The lever 63 is biased anticlockwise by a spring 65 acting between the lever and the casing and a spring 77 acting between this lever and lever 41. Spring 77 compensates for any increase in loading between the engaging surfaces 58, 59 of the blocking member and the latch caused by altering the tension of spring 35. If the temperature of the refrigerator becomes abnormally high, an extension 86 of lever 30 opens contacts 20, 82 and extinguishes an indicator lamp.
Patent GB-915413-A (GB)
Title: Improvements in storage containers for liquefied gases
IPC: F17C13/02
Filed: 1961-07-19
Abstract: 915,413. Storing liquefied gases. CHICAGO BRIDGE & IRON CO. July 19, 1961 [Dec. 23, 1960]. No. 26076/61. Class 8(2). A vapour relief duct 26 of a heat insulated liquefied gas e.g. butane container 10 is surrounded by a condenser 20 down which passes liquefied gas having been withdrawn from the container by a pump 17 and sub-cooled in an exchanger 14 itself cooled by external refrigeration system 11-13. Any uncondensed low boiling impurities are discharged to atmosphere through a purge line 32, Fig. 2 (not shown).