baber/WOPTO huggingface dataset:
Patent GB-1247146-A (GB)
Title: Printed circuit mounting structure
Inventor: POMELLA PIERO
IPC: H05K7/14
Filed: 1970-06-03
Abstract: 1,247,146. Mounting for printed circuit boards. ING. C. OLIVETTI & C. S.p.A. 3 June, 1970 [21 June, 1969], No. 26872/70. Heading H1R. A mounting structure for printed circuit boards includes a pair of grooved guides 1 of synthetic compressible plastics material which are disposed parallel and with the grooved sides facing each other so that a printed circuit board may be inserted. Each of the guides is provided with a seat 10 adapted to receive and lock in position one end 15 of an electrical edge connector 14, this seat 10 being formed in a projection 9 of the guide, adapted to be bent elastically with respect to the guide 1 so as to permit the introduction and withdrawal of the connector 14. The projection 9 may be bent by pressing the lug 13 which forms part of the extension 9. A plurality of pairs of guides can be assembled by mounting them on a pair of cylindrical bars which may pass through the holes 7 and 8 in each pair of guides. As the guides are made of a compressible material, the guides may be compressed together by any suitable clamping mechanism until prescribed nominal positions of the guides are obtained.
Patent GB-724075-A (GB)
Title: Improvements in and relating to frequency changers for radio receivers and the like
IPC: H03D7/10
Filed: 1949-10-19
Abstract: 724,075. Superheterodyne circuits. BRITISH COMMUNICATIONS CORPORATION, Ltd., and HEFTMAN, T. S. Jan. 18, 1951, No. 26875/49 [Oct. 19, 1949], No. 26875/49. Class 40 (5). A frequency-changing arrangement comprises a mixer valve 10 having two control electrodes lying successively between cathode and anode and maintained at or near cathode potential, the anode being the only electrode maintained substantially positive relative to the cathode; a crystal-controlled oscillator 15 oscillating at a frequency f which is a harmonic of the fundamental frequency of the crystal, and a filter-comprising tuned circuits 18, 22 coupled by condenser 21-coupling the oscillator to one, preferably the inner, of the control electrodes of the mixer 10, the filter being adapted to pass the frequency f and attenuate at the fundamental and other harmonic frequencies of the crystal: the oscillations whose frequency is to be changed being applied to the other control electrode of the mixer, via condenser 11.
Patent GB-1047584-A (GB)
Title: Improvements in radar systems
IPC: G01S13/28
Filed: 1963-07-08
Abstract: 1,047,584. Pulse radar. RAYTHEON CO. July 8, 1963 [July 23, 1962], No. 26944/63. Heading H4D. In a pulse expansion and compression radar utilizing transmitted trains of encoded signals, succeeding trains are differently encoded but alternate trains are encoded in the same way, the echo signals are auto-correlated or crosscorrelated with those transmitted, and unwanted correlation products are cancelled. In one embodiment a pulse, Fig. 2a (not shown) from a generator 1, Fig. 1 (not shown), causes a circuit 3 of the kind described in Specification 1,007,516 to produce during the transmission interval, Fig. 2c (not shown) at terminal a contiguous pulses forming a single ascending " frequency staircase " group α and simultaneously at terminal b a complementary descending " frequency staircase " group #. By means of switches 6, 7 and network 2 (see also Fig. 3, not shown) the modulation input for the transmitter during odd-numbered repetition periods is as shown in Fig. 2d (not shown) and during even-numbered repetition periods is as shown in Fig. 2e (not shown), the plus and minus signs indicating relative carrier phases of 0 degrees and 180 degrees. During the reception interval, the signal forms at terminals a, b of filter 3 for the a, # groups and for odd- and even-numbered reception intervals are as illustrated in Figs. 2f, 2g, 2k, 21 (not shown); these give rise at the output D of network 2 to the signals depicted in Figs. 2b, 2j, 2m, 2n (not shown). During odd- (or even-) numbered receive intervals the input to amplifier 36 is phase-inverted so that the unwanted signals on either side of a peak, e.g. 312h, tend to cancel; the amplifier output is fed to an arrangement 37 comprising a summing circuit feeding a delay line 38 and a feedback coupling circuit 41. Delay line 38 also establishes the radar pulse repetition period by passing an output therefrom to generator 1; another output from line 38 is detected and passed to a P.P.I. An embodiment excluding filter 3, i.e. utilizing single-frequency pulse trains, is described, Fig. 4.
Patent GB-447176-A (GB)
Title: Improvements relating to rustproofing compositions
IPC: C23C22/08
Filed: 1935-09-30
Abstract: A rustproofing-composition is prepared by dissolving iron sulphide in a concentrated aqueous solution of phosphoric acid or by dissolving iron or another iron compound in the acid and adding a sulphide, for example, sodium, potassium, or calcium sulphide, either during the reaction or subsequently.  The solution is filtered and, when required for rustproofing, is diluted, the articles being immersed in the diluted solution which is maintained at an elevated temperature, e.g. 100 DEG  C.  Sodium carbonate may be added to the solution at the time of its application.
Patent GB-694194-A (GB)
Title: Improvements in or relating to lifting and transporting trucks
Inventor: WILLIAMS JOHN BRYNMOR
IPC: B62B3/06
Filed: 1950-11-04
Abstract: 694,194. Pallet trucks. AJAX TRUCKS, Ltd. Oct. 9, 1951, [Nov. 4, 1950] No. 26982/50. Class 78 (iii). A lifting and transporting truck has a manually operated linkage connected by a universal joint with part of the platform for raising and lowering through interconnected bell crank levers 5 and 6. An extension 9 of the platform has a bearing for a ball head 30 connected to a link 28. The link 28 has a bearing for a ball joint 25 mounted between lifting levers 17. The lifting levers 17 and lifting handle 16 are mounted to pivot at 15. The lifting levers 17 have a bearing surface for pins 18 on a hoop 20. Slots in the handle allow the hoop to be raised without affecting the linkage when the platform is raised. The platform is lowered manually by a pedal 43 which breaks the linkage so that gravity can complete the lowering. When the platform is raised a catch 39 on the levers 17 engages stops 40.
Patent GB-1196815-A (GB)
Title: Common Mode Choke for Two-Dimensional Memory Array.
IPC: G11C11/06
Filed: 1968-06-06
Abstract: 1,196,815. Magnetic storage apparatus. SPERRY RAND CORP. 6 June, 1968 [9 June, 1967], No. 27008/68. Heading H3B. In a two-dimensional memory array in which word lines are in the form of two wire transmission lines coupled to a common mode choke the memory and word line selection circuitry is arranged so that the length of the transmission line is reduced. A plurality of plated wire memory elements B1 to B8 are arranged at right angles to a plurality of looped word line strips W1 to W2, Fig. 2. The upper portion of each word line is connected at its open end to a word line isolation diode D1 to D8 and at its lower portion to a terminating strip 20 running along the edge of the array 10. Each word driver L1, L2 is coupled to each of the divertors S1 S2, S3, S4 by a line, including the associated word line W1 to W8, that forms the input wire of a two wire transmission line, the ground return line being in two portions coupled to non-grounded terminating strip 20. As shown in the Figure the transmission lines coupling the divertors and word drivers are each coupled to a high permeability core for forming a common mode choke therewith so as to provide current balancing and common mode current rejection. The terminating strip 20 functions as a low capacitive, low inductive line, common return path for the word currents which permits minimum lead lengths and minimum deleterious capacitive and inductive effects. The plated wire memory elements may be embedded in a base member on which are formed the terminating strip and word lines Fig. 3 (not shown). A word line is selected by energization of one of the word drivers and one of the divertors.
Patent GB-1458016-A (GB)
Title: Manufacture of ternary alloys of lead calcium and aluminium
IPC: C22C11/00
Filed: 1973-06-06
Abstract: 1458016 Ternary alloy LUCAS BATTERIES Ltd 30 May 1974 [6 June 1973] 27013/73 Headings C7A and C7D  A ternary lead alloy suitable for the cast grids of lead-acid batteries containing 0À05-0À12% Ca and 0À005-0À1% Al is made by melting and stirring a binary alloy of Pb and Al in air or other oxidizing atmosphere with sufficient excess of Al present to form a layer of aluminium oxide on the melt surface. Ca melat or hydride is then added below the oxide film, and the melt further agitated without rupturing the film to produce the ternary alloy without loss of Ca by oxidation. Compositional adjustments may be made by remelting the ingotted alloy with further lead prior to casting into the required shapes.
Patent GB-260607-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/18
Filed: 1926-10-28
Abstract: 260,607. British Thomson-Houston Co., Ltd., (Assignees of Strickland, R. F.). Oct. 29, 1925. [Convention date]. Filaments, supports for; screens within bulbs. - In high-power lamp bulbs for projectiion purposes &c. a disc 16 of insulating material is supported by a rod 21 from the stem 22, and the filament 17 is supported by the leads 12, 13. and by anchors 18 secured to the disc 16. This serves as a screen to protect the parts adjacent the stem from currente of hot gas. and is composed of a material that soften at a higher temperature than for example, steatite, pressed alumina or magnesia, pressed or moulded zirconia or silica, or porcelain. The anchor wires and the rod 21 are secured in the disc by cement, which may consist of magnesia, and sodium silicate.
Patent GB-870711-A (GB)
Title: Polyacrylamides and process of producing same
IPC: C08F20/56
Filed: 1959-08-07
Abstract: 870,711. Sewage treating. AMERICAN CYANAMID CO. Aug. 7, 1959 [Aug. 18, 1958 ; Aug. 22, 1958], No. 27049/59. Class 111. [Also in Groups II, IV(a) and XXI] Domestic sewage may be flocculated by treating with a water-soluble polyacrylamide which comprises a homopolymer of acrylamide or a copolymer of acrylamide with a copolymerisable olefinically unsaturated carboxylic acid, said polyacrylamide having an intrinsic viscosity of at least 12 decilitres per gram (for preparation see Group IV(a)) together with 25 ppm of ferric chloride.
Patent GB-859009-A (GB)
Title: Improvements in or relating to indirectly heated thermionic cathodes
IPC: H01J1/20
Filed: 1958-08-22
Abstract: 859,009. Cathode-ray tubes. STANDARD TELEPHONES & CABLES Ltd. Aug. 22, 1958 [Aug. 28, 1957], No. 27051/58. Class 39(1). The cathode 2 of a cathoderay tube is supported transversely to the axis of the tube from the insulator 5 by thermally compensated supports or wires 3. Preferably the supports 3 are made of a nickel-iron alloy, preferably " Invar " (Registered Trade Mark) or of a nickelcobalt-iron alloy, and the sleeves 4 of copper, constantan or nickel.
Patent GB-444327-A (GB)
Title: Improvements in the recovery of hydrogen sulphide from gases
IPC: B01D53/52
Filed: 1934-09-21
Abstract: In recovering hydrogen sulphide from gases containing it in addition to carbon dioxide while employing alkaline absorption liquids, the absorption liquid is brought into contact with the gas in a finely divided, preferably atomized, form and the time of contact of the absorption liquid with the gas is kept below five seconds and preferably at about one second or less, the hydrogen sulphide being recovered by heating the resulting liquor.  By working in this manner practically only hydrogen sulphide is removed from the gas.  Suitable absorption liquids include aqueous solutions of soda, potash, borates, phosphates, metaborates or arsenites, solutions of organic bases such as ethanolamine, ethylene diamine, ethanol diamines, ethylene triamines or like polyamines, or alkylated or hydroxyalkylated derivatives of these bases or solutions of the salts of weak organic acids such as taurine or alanine.  The known atomizing nozzles, disintegrators, Theisen washers, Feld washers or Ströder washers may be employed for the fine subdivision of the washing liquids.  Preferably, the washing temperature is kept low and the concentration of the washing liquid as high as possible.  When it is desired that the small quantity of carbon dioxide absorbed should not be present in the regenerated hydrogen sulphide, the regeneration may be effected in two stages, the first stage being carried out at a temperature somewhat below the boiling-point, the gas thus escaping, which is practically pure hydrogen sulphide, being collected separately while in the second stage the liquid is heated to boiling whereby the remainder of the hydrogen sulphide with some carbon dioxide is driven off.  Examples are given. Specification 391,780 is referred to.
Patent GB-1467717-A (GB)
Title: Method of forming  a hard siliceous coating at the surface  of an article
IPC: C04B41/65
Filed: 1974-06-19
Abstract: 1467717 Calcium silicate paints NISSAN CHEMICAL INDUSTRIES Ltd 19 June 1974 [4 July 1973] 27256/74 Heading C1A A calcium silicate coating is prepared by (a) applying a sol containing 0À1-70% of colloidal SiO 2  and a minor amount of Na, K, Li or Cs in H 2 O, methanol, isopropanol, tbutanol or mixtures thereof, to a susbtrate, and (b) causing the SiO 2  sol to react with calcium in the presence of water to form 2CaO.SiO 2 .H 2 O.; the mole ratio of SiO 2  : alkali metal ranges from 25 : 1 to 2000 : 1. The source of calcium may (i) be mixed with the silica sol before application, (ii) may be present in the substrate which is coated (e.g. concrete), or (iii) may be applied in a solution to the silica sol after the sol has been coated on to the substrate.
Patent GB-629997-A (GB)
Title: Improvements in or relating to switching keys having indicator lamps
IPC: H01H13/02
Filed: 1947-10-10
Abstract: 629,997. Switches held set and freed mechanically; press-button retractive switches. STANDARD TELEPHONES & CABLES. Ltd., HENDERSON, H. S., and BLACKWOOD, T. S. Oct. 10, 1947, No. 27266. [Class 38(v)] The operating cam member of a switching key, such as is used in the control panels of railway signalling and like systems. is made of transparent material so that light from an indicator lamp can be transmitted from the rear to the front of the switch. The switch of'Fig. 2 comprises a cylindrical housing 1 in a cut-away portion or portions 2 in which are accommodated a spring set or sets 3, which are operated by cams 9 on a transparent member 8 keyed at 13 to a rotatable transparent knob 14. Light from lamp 6 clipped to the housing 1 is transmitted through the members 8, 14, the ends of which have polished. and ground surfaces, respectively. Stop and click mechanisms may be provided to limit the rotation of, and locate, the knob 14. A ring nut 20 co-operating with a shoulder 19 on the housing 15 securer the switch to a panel. In the construction of Fig. 4, a transparent one-piece plunger- 52 has a shoulder 56 operating the contact spring 57 and is retracted by a spring 58, .the housing 51 being secured by a bayonet fastening 64 to a tube 63 on the panel to permit easy removal of the switch. There : may be more than one spring set. In both constructions the transparent members may be coloured and there may be several lamps provided .with colour filters. Specifications 598,452 and 620,465 are referred to.
Patent GB-380952-A (GB)
Title: Overflow fittings and conduits for boilers and tanks employed in heating tar, bitumen, bitumastic preparations, petroleum residues and other materials
IPC: E01C19/08
Filed: 1931-10-01
Abstract: 380,952. Tar and like boilers. PALMER, C. A. and GILLARD, W. A., of Llewellins & James, Ltd., Castle Green, Bristol. Oct. 1, 1931, No. 27287. [Class 107.] A tar or like boiler a is provided with a plurality of tubular overflow outlets c located on opposite sides of the boiler and adapted to deliver overflow material to a pair of troughs e which are attached on opposite sides of the boiler beneath the outlet pipes and are so shaped and inclined as to direct the overflow material away from the firebox end f of the boiler. The troughs are secured by their inner sides to the boiler.
Patent GB-1516363-A (GB)
Title: Maximum demand electricity meter
IPC: G01R21/133
Filed: 1976-11-24
Abstract: 1516363 Maximum demand meter A J COLEMAN 24 Nov 1976 [27 Aug 1975] 27404/75 Heading G1U In a maximum demand electricity meter, pulses, each representing the consumption of a unit of electricity, are fed to a first counter and also to a second counter whenever the count in the first counter exceeds that in the second counter, and the first counter is periodically (e.g. every 30 minutes) reset to zero, whereby the count in the second counter equals the highest count attained by the first counter in any of the preceeding (30 minute) counting periods.
Patent GB-369195-A (GB)
Title: Improvements in or relating to centrifugal separation
IPC: B04B11/02
Filed: 1930-09-13
Abstract: 369,195. Centrifugal m a c h i n e s. SHARPLES SPECIALTY CO., 23rd Street, Philadelphia, U.S.A.-(Assignees of Jones, L. D. ; c/o Sharples Specialty Co., 23rd Street, Philadelphia, U.S.A.) Sept. 13, 1930, No. 27424. Convention date, Oct. 2, 1929. Void [Published under Sect. 91 of the Acts]. [Class 23.] The solids deposited inside a centrifugal machine are advanced to the point of discharge by ploughs which are arranged on a hub mounted coaxially with the machine drum for differential rotation with respect thereto. In the example shown the drum has a perforate wall 11, Fig. 2, but the arrangement may be applied to an imperforate drum. A hub 14 keyed to the hollow driving shaft 15 is connected by arms 13 to the drum which is provided with a perforated lining 17 and has an inwardly extending flange 19 to prevent material from escaping downwards. The shaft 20 is supported inside the hollow shaft 15 and carries a hub 21 which has a chamber 22 for the reception of the liquid for treatment and hollow fan-like members 23 for its distribution ; the latter members 23 have vanes 25 to carry the liquid round. Ploughs 26 of disc form are mounted on stems 30 pivoted to bracket parts 28 threaded into the hub 21 and locked by a nut ; the discs 26 may rotate on their supports, or they may be fixed. Each plough is adjusted so that its edge cuts into the deposited solids, and the face of the plough rolls the solids over towards the discharge end. The ploughs are arranged in groups, those in one group being in staggered relation with those of another group. The liquid mixture passes from the chamber 22 and distributers 23 to the drum through which the clean liquid passes into the chamber 35 for discharge. Differential rotation between the shafts 15, 20 causes the ploughs to advance annular strips of solids to discharge over the upper end of the bowl. In the modification shown in Fig. 5, a frusto-conical plate 40 deflects liquid discharged through the drum to pass over the inner wall 43 of the trough formed in the liquid collecting compartment 44. The solids are discharged from the bottom of the drum and the bearing for the shaft 15 is provided with a felt seal 45. The hub 47 has a series of hollow bosses 63, Fig. 6, in each of which is inserted a plough bracket 65 carrying a plough 66, Fig. 8, formed as a sector of a disc and provided with an integral stud 72 resting in an opening in the bracket and secured by a pin. Washing liquid may be supplied through the pipe 58 to the annular chamber 55 from which it passes by apertures 57 to the annular chamber 53. Passages 59 convey it downwards to pipes 60 which are fitted with caps 61 having discharge slots through which the liquid is distributed over the inner surface of the cake of solids.
Patent GB-953548-A (GB)
Title: Improvements in and relating to hydroxypolyalkylene ethers
IPC: C07D309/10
Filed: 1960-08-09
Abstract: The invention comprises hydroxy poly alkylene ethers of a substituted tetrahydropyran, having the general formula: <FORM:0953548/C2/1> wherein m is 0, 1 or 2, R4 is an ethylene radical, propylene radical or a mixture thereof and n is a number from 1 to 100 and their preparation by reacting 3,3,5,5-tetrakis (hydroxymethyl)-4-hydroxy-tetrahydro pyran, 3,3,5-tris (hydroxy methyl)-4-hydroxy-5-methyl-tetrahydropyran or 3,5-di (hydroxymethyl-3,5-dimethyl-4-hydroxy-tetrahydropyran with 1-100 moles of ethylene and/or propylene oxide per hydroxyl equivalent of the pyran starting material in the presence of a catalyst at a temperature of from 110 DEG -170 DEG C. The tetrahydropyran may be used in molten state and if desired with an inert solvent.  An alkaline catalyst, e.g., NaOH, KOH and ter.-C4H9OK may be used. In examples: (1) the tetrakis (hydroxy methyl) reactant is condensed with about 9 moles of propylene oxide; (2) the tris (hydroxymethyl) reactant is condensed with 7.1 moles of propylene oxide and (3) the bis (hydroxymethyl) reactant is condensed with a mixture of 8 moles each of ethylene and propylene oxides, in each case under elevated pressure. The products may be used as solvents, detergents and intermediates in the preparation of foamed polyurethanes (see Division C3).ALSO:The invention comprises polyoxyalkylene ethers having the general formula: <FORM:0953548/C3/1> wherein m is 0, 1 or 2, R4 is an ethylene radical, propylene radical or mixture thereof and n is a number from 1 to 100 and their preparation by reacting 3,3,5,5-tetrakis (hydroxymethyl)-4-hydroxy - tetrahydropyran, 3, 3, 5 - tris (hydroxymethyl)-5-methyl-4-hydroxy - tetrahydropyran or 3, 5-dimethyl-3, 5-bis hydroxymethyl-4-hydroxy-tetrahydropyran with 1-100 moles of ethylene and/or propylene oxide per hydroxyl equivalent of the tetrahydropyran reactant at 110 DEG -170 DEG C. in the presence of a catalyst e.g., NaOH, KOH or tert. C4H9OK.  The tetrahydropyran may be used in the molten state and with an inert solvent at ordinary or raised pressures. The products may be used as solvents, detergents or intermediates in the preparation of polyurethane foams. In examples: (1) the tetrakis (hydroxymethyl) reactant is condensed with ca. 9 moles of propylene oxide; (2) the tris (hydroxymethyl) reactant is condensed with 7.1 moles of propylene oxide; (3) the bis (hydroxymethyl) reactant is condensed with a mixture of 8 moles each of ethylene and propylene oxides; (4) the product of (1) is mixed with 2, 4- and 2,6-tolylene diisocyanates, trichloro-fluoromethane and minor amounts of dibutyl tin laurate and a silicone oil surfactant and the foamed product is cured.
Patent GB-337893-A (GB)
Title: Improvements in or relating to alloys and to articles made therefrom
IPC: C22C38/22
Filed: 1929-09-11
Abstract: 337,893. Hadfield, Sir R. A. Sept. 11, 1929. Alloys.-An alloy, particularly for purposes requiring resistance to corrosion at high temperatures, and having high electric resistance, such as for electric furnace resisters, contains in addition to iron about 24-35 per cent of chromium, 3-5 per cent of tungsten, and 3-7 per cent of aluminium, the proportions of carbon, manganese, and silicon being low, for example about 0.6, 0.3, and 0.6 per cent respectively.