baber/WOPTO huggingface dataset:
Patent GB-1067816-A (GB)
Title: Improvements in or relating to lapping machines
IPC: B24B37/10
Filed: 1965-10-29
Abstract: 1,067,816. Lapping. SPEEDLAP CORPORATION. Oct. 29, 1965 [Dec. 9, 1964], No.45882/65. Heading B3D. A lapping machine comprises a lapping disc rotatable about a vertical axis, at least one truing and retaining ring member disposed on the lapping disc and arranged to retain workpieces thereon, a plate member disposed within the ring member and arranged to maintain pressure on the workpieces for holding them against the movement of the lapping disc when the machine is in operation and means carried by one of the members engageable with the other of the members for arresting downward movement of the plate member upon completion of a preselected amount of lapping. A lapping disc 14, Fig. 2, comprising segments 15 secured to a wheel 16 is rotated about a vertical axis; a freely flowing mixture of abrasive particles and an oil carrier is fed to the disc through discharge tubes. Workpieces 54 are retained within a lap conditioning ring 42 having in its bottom surface an annular recess in which pad members 52 are secured, e.g. by epoxy cement; the material of the pad members has a greater abrasion resistance than the material of the lapping disc, and is preferably boron carbide. A pressure plate 32 bears on the workpieces; it fits with slight clearance within the ring 42 and is connected to the lower end of the piston rod 28 of a pneumatic jack mounted on the machine frame. The plate 32 has secured thereto three posts 34 carrying adjustable screws 38, downward movement of the plate being arrested when the screws engage the top surface of the ring 42. In a modification, Fig. 4 (not shown), micrometers 60 are used instead of the screws 38. In a modification, Fig. 5 (not shown), an additional post 34<SP>1</SP> carries a dial indicator 68. In a modification, Fig. 7 (not shown) and Fig. 8 (not shown), the ring 72 has three circumferentially spaced series of radical cylindrical openings such as 78a-78f helically arranged. Corresponding openings of the three series are at the same height and spaced 120 degrees apart. A stop member 80 is disposed in one opening of each series and has an eccentric portion 82 projecting inwardly to limit the downward movement of the plate 32. For fine adjustment the stop members 80 are rotated by a wrench inserted in a socket 88 and the stop members are secured in adjusted position by a threaded tapered plug 90 which radially expands the stop members. Coarse adjustment is made by transferring the stop members 80 to another set of corresponding openings. In a modification, Fig. 10 (not shown), the ring 108 has three vertical slots 112 in which are slidable stop members 114 having fingers 116 engaging the plate 32. The members 114 are secured in adjusted position by bolts passing through slots in the members.
Patent GB-1195799-A (GB)
Title: Alternating Current Flame Ionization Detector
IPC: G01N30/68
Filed: 1968-09-27
Abstract: 1,195,799. Flame ionization detectors. MINE SAFETY APPLIANCES CO. Sept.27, 1968 [Dec. 1, 1967], No. 46142/68. Heading G1N. In a flame ionization detector, oppositely phased alternating voltages are applied to the burner 12, acting as one electrode, and another electrode 16, the amplitude of the voltage applied to electrode 16 being adjustable by a potentiometer 36 so that, in the absence of a gas to be detected, no signal is picked up by an intermediate electrode 14 disposed between the flame 19 and the electrode 16, but when a gas to be detected is burnt in the flame the change in conductivity of the flame causes an alternating voltage to be picked up by the electrode 14. The electrode 14 is connected through an operational amplifier 42 having an R. C. feedback circuit and a synchronous detector 70 to a D.C. indicator 92. A recorder may be connected to terminals 96, 98. An igniter 18 is provided. The detector may be used to detect hydrocarbons in the effluent form a gas chromatograph.
Patent GB-1189919-A (GB)
Title: Improvements in or relating to Circuit Arrangements for Detecting and Indicating Changes of Signal State on Signal Lines
IPC: H04Q3/42
Filed: 1968-09-30
Abstract: 1,189,919. Automatic exchange systems. SIEMENS A.G. 30 Sept., 1968 [29 Sept., 1967], No. 46260/68. Heading H4K. The state of lines is monitored by giving each line an arrangement of three ferroelectric or ferromagnetic elements K1, K2, K3; K1 being coupled to its associated line; both K1 and K2 being driven by interrogation pulses from a scanner AB1 and having outputs coupled in opposition to the third element K3; a change of state of the line resulting in a corresponding change of state of the element K3. Changes of state are signalled from K3 to a receiver EM. The currently existing state of the line is indicated by the state of K3 which may be read out to EM non-destructively by a scanner AB2. The elements K1, K2, K3, described, are ferromagnetic as shown in Fig. 1. Cores K1 and K2 may be non-remanent with a permanent bias so that unidirectional interrogation pulses from AB 1 switch the cores from saturation under bias to opposite saturation from which the cores revert to saturation under bias when the interrogation pulse ends. If the cores are remanent they are cycled from saturation to saturation and back by bipolar pulses. Output pulses generated in windings We of K1 and K2 for one direction of turnover are coupled to input windings Ws1, Ws2 of core K3. To obtain unidirectional inputs to K3 diodes D1, D2, may be used in the coupling loops or the resetting amplitude of the bipolar interrogation pulse may be so small as to produce no significant output from K1 and K2. Core K3 is remanent and its windings Wsl, Ws2 are in opposition. With no current monitored from the line both cores K1 and K2 turn over to interrogation, the output from K1 to K3 exceeding that from K2 so that K3 is always driven to a 0 state. If current is monitored it biases K1 and interrogation produces no output, output from K2 (which is invariable) driving K3 to a 1 state.
Patent GB-1010550-A (GB)
Title: Roller bearing and method of manufacture thereof
IPC: F16C19/46
Filed: 1963-11-25
Abstract: 1,010,550. Bearings. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER O.H.G.]. Nov. 25, 1963 [Dec. 13, 1962], No. 46504/63. Heading F2A. A roller bearing comprises a cylindrical sleeve 1 with radially inwardlydirected rims 3 and 4 and a comb-like cage 5 made from resiliently deformable synthetic material. The rim 3 has a radial width such that the ends of the rollers abut against it, and the rim 4 is of such a width that the cage 5 can be snapped past it into the sleeve. The sleeve may be hardened prior to insertion of the cage.
Patent GB-1438436-A (GB)
Title: Pore size control in cordierite ceramic
IPC: B01J35/10
Filed: 1974-10-29
Abstract: 1438436 Ceramics CORNING GLASS WORKS 29 Oct 1974 [5 Nov 1973] 46671/74 Heading C1J The pore size in bodies containing at least 70 vol. per cent cordierite is controlled by including in the raw mix at least one of pyrophillite 1-17%; kyanite 1-40%; quartz 1-20%; and fused silica 1-20%. At least 20% of open pores are larger than 10 Á diameter. Raw mixes described for making the cordierite comprise talc, clay and alumina.
Patent GB-1479166-A (GB)
Title: Voice frequency receiver
IPC: H04Q1/46
Filed: 1974-10-29
Abstract: 1479166 Voice frequency receivers STADABD TELEPHONES & CABLES Ltd 28 Oct 1975 [29 Oct 1974] 46745/74 Heading H4R  During a persistence check in a V.F. receiver the rate of change of the envelope of an incoming tone is monitored and if the rate of change exceeds a predetermined limit the output of the receiver is inhibited. In a first embodiment the rate of change detection circuit Fig. 3 is applied to a known automatic gain control arrangement connected between a tone input and the frequency selective circuits, the rate of change detector monitoring the negative feedback voltage derived from the envelope of the received signal. In Fig. 3, the network C-R1 is such that a suitable voltage appears across R1 for a given rate of change of input voltage, voltage comparator 2 responding to a positive voltage across R1 exceeding a threshold level to inhibit the gate G and comparator 1 similarly responding to a negative voltage. The circuit of Fig. 3 may also be applied to a receiving arrangement as illustrated in Fig. 1 (not shown).
Patent GB-1076614-A (GB)
Title: Integrated electrical circuits
IPC: H01L23/522
Filed: 1964-11-18
Abstract: 1,076,614. Variable reactance circuits. RADIO CORPORATION OF AMERICA. Nov. 18, 1964 [Dec. 17, 1963], No. 46950/64. Heading H3R. [Also in Division H1] An integrated circuit formed in or on a substrate of semi-conductor material comprises a three-electrode active device (an insulatedgate field-effect transistor as described) with a pair of input terminals to which an input signal voltage is applied and a phase-shifting network including resistive and capacitative elements connected between the input terminals, so that the net current flowing through the input terminals lags behind the input signal voltage and the circuit behaves in a manner similar to that of an inductor. The resistive element in the phase-shifting network may be provided by the drain-source path of a second insulated-gate field-effect transistor having a common drain electrode with the first, and in one embodiment (Figs. 6 and 9) a variable control voltage source is connected between the gate and source electrodes of this second transistor.
Patent GB-1142847-A (GB)
Title: Improvements in or relating to assembly methods for spring pivots
IPC: G01C19/00
Filed: 1965-11-06
Abstract: 1,142,847. Making pivots. S. G. BROWN Ltd., and I. A. DUCK. 6 Nov., 1965 [6 Nov., 1965], No. 47162/65. Heading B3A. A method of assembling a pair of metal members and at least one metal strip in such a way that the strip or strips function as a flexural spring pivot between the members comprises the steps of securing to each of the members a metal clamping element with a part of each element overlying a surface portion of the member to which the or a metal strip is to be secured, removing material from the clamping elements to precisely position the adjacent edges thereof, interleaving the strip or strips between the overlying parts of the clamping elements and the members and then securing the assembly together. The method is described as being used for making gyroscope rotor assemblies in which an annular rotor is carried by an intermediate gimbal member in turn mounted on a support member on a spin shaft, the rotor, gimbal and support members being made from a single metal disc, crossed leaf spring flexural pivots being provided between the members arranged along two orthogonal axes in the plane of the disc to mount the rotor with two degrees of rotational freedom on the spin shaft. The members are formed by cutting slots in the disc, e.g. by engraving and at the parts where it is desired to locate a flexural spring pivot the opposed edges of the slot are chamfered to form surfaces 30, 32, 34, 36 (Fig. 5) these surfaces preferably being at right angles to each other along each edge. Metal, e.g. stainless steel, clamping elements in the form of angle members 42, 44 are then secured in place by spot welding, portions of the clamping elements being left unsecured to allow the interposition of metal strips to form the flexural pivot. The angle parts of the members 42, 44 are then removed by engraving to leave clamping elements 50, 52, 54, 56 (Fig. 9) and the metal strips 58, 60 are interposed to form the crossed leaf spring pivot. The free ends of the metal strips may be removed by grinding in a finishing operation. Parts of the length of the slots cut in the disc from which the gyro rotor assembly is formed may not be cut away until after the spring pivots have been formed so that the members of the rotor assembly are correctly positioned during assembly of the pivots.
Patent GB-1118299-A (GB)
Title: Electrolytic formation of a corrosion resistant chromide coating
IPC: C25D3/66
Filed: 1965-11-09
Abstract: A support consisting of a metal composition, over 50 mol % of which is at least one of the metals Cu, Ag, Au, Mo, W, Re, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt, is provided with a chromide coating, i.e. a layer of an interdiffused alloy of the support metal and deposited Cr, by deposition from a fused salt electrolyte of at least one alkaline earth metal fluoride with or without one or more alkali metal fluorides and 0.1 to 50 mol % of at least one alkali or alkaline earth metal chromous fluoride at a temperature of at least 700 DEG C. but below the M.P. of the metal composition, in the absence of oxygen, e.g. in a vacuum or an inert gas atmosphere e.g. of 90% N2-10% H2, wherein the metal composition as cathode is joined through an external electrical circuit to a chromium anode, preferably held as pieces in a graphite or chrome iron porous basket, and the current flowing in the cell is controlled so that the current density of the cathode does not exceed 10 amp/sq.dm.  An external e.m.f. e.g. of up to 0.3 volt may be impressed on the circuit, or the bath may be operated as a self-generating battery.  The desired metal chromous fluoride may be formed in situ by reduction from added chromic salt by electrolyzing the electrolyte using a scrap cathode and a chromium anode.  The electrolyte may be initially composed of 7Kg NaF, 6.5Kg CaF2 and 100g chromic chloride; fluorides of Li, K, Rb, Cs, Be, Mg, Sr and Ba may also be used. The use of Be F2 or Mg F2 in the salt baths in the chromizing of the specified metal composition produces a combined Cr-Be or Cr-Mg coating. Examples of the cathode are strips or coupons of carbon or alloy steel, cast iron, Mo or an alloy of composition: 65 Ni - 10 Cr - 12 Co - 5 Mo - 4 Ti - 4 Al.
Patent GB-1500940-A (GB)
Title: Building assembly and support means therefor
IPC: E04B2/76
Filed: 1975-11-18
Abstract: 1500940 Interconnecting structural elements R GRONERT 18 Nov 1975 [13 Dec 1974] 47435/75 Heading F2M Support means for a building assembly comprises two column elements 1 of which at least one has a rebated top portion 1b and the other has a skirted bottom portion 1a capable of fitting over the rebated top portion of the lower column element and enclosing an L-shaped opening 4 comprising a vertical spacing 4b and a gap 4a between the outer edges of the adjacent ends of the column elements, the opening being able to receive a correspondingly shaped flange portion 3 of a building element 2 of the assembly. Abutting shoulders 5, 6 may be formed at the ends of the columns, or the shoulders may comprise respective parts of a bayonet screw connector for clamping engagement of the shoulders (Fig. 3).
Patent GB-1280147-A (GB)
Title: Arc welding
Inventor: LUCEY JOHN ANTHONY
IPC: B23K9/18
Filed: 1968-10-07
Abstract: 1280147 Fusion welding BRITISH OXYGEN CO Ltd 7 Jan 1970 [7 Oct 1968] 47531/68 Heading B3R In an arc welding process a composite electrode is used which comprises two or more, electrodes extending in parallel to each other, one of the electrodes being tubular and containing fluxing or alloying ingredients and the, or one, other being solid and arranged in electrical contact with the external surface of the tubular electrode. The two electrodes may be spot welded or adhesively secured together to form a dual electrode 12 which may be fed from a supply reel by suitably shaped feed rolls. For welding, the ends of the electrodes may be located transversely of or in line with the direction of welding. The tubular electrode 2 may be a hard facing electrode and the sheath 6 and solid rod 4 may be of mild steel; the core 8 of the tubular electrode may contain alloying and fluxing ingredients, deoxidants or denitridants as well as iron powder. The process may be applied to submerged arc and inert gas shielded welding.
Patent GB-1028089-A (GB)
Title: Improvements in and relating to methods and devices for deburring workpieces
IPC: B24B9/00
Filed: 1964-11-23
Abstract: An abrasion wheel in a device for deburring workpieces (see Division B3) has abrasive grains of 120-mesh bonded in porous rubber, the grains being of aluminium oxide.  The grinding wheel is driven by frictional engagement with a driving wheel which may have grains of the same material as the grinding wheel bonded in solid rubber, the grain size being 60-mesh.
Patent GB-1204319-A (GB)
Title: Improvements in or relating to animal feed compositions
Inventor: ROLOVICH IVAN
IPC: A23K1/165
Filed: 1966-10-24
Abstract: 1,204,319. Chicken feeds comprising trypsin or chymotrypsin. PIERREL S.p.A. 24 Oct., 1967 [24 Oct., 1966], No. 47692/66. Heading A5B. A composition for feeding chickens comprises standard dietary elements and either trypsin or chymotrypsin as sole proteolytic enzyme. The composition may contain grain, animal protein, vegetable protein, minerals and vitamins.
Patent GB-1310846-A (GB)
Title: Method for extricating ceramic castings from multiple-piece moulds
IPC: B28B1/26
Filed: 1970-09-18
Abstract: 1310846 Slip casting MANSFIELD SANITARY Inc 18 Sept 1970 [13 Oct 1969] 47804/72 Divided out of 1310844 Heading B5A The subject matter of this Specification is identical with that described in Specification 1,310,844 but the claims are concerned with the method of transferring the weight of the casting from the mould on to the receiving conveyer bat.
Patent GB-997656-A (GB)
Title: Monoamido-dithiophosphoric acid-o-esters
IPC: C07F9/24
Filed: 1963-12-04
Abstract: The invention comprises monoamido-dithiophosphoric acid-#O-esters of the formula <FORM:0997656/C2/1> and salts thereof, wherein R is alkyl or cycloalkyl, and R1 is alkyl, substituted alkyl or cycloalkyl. They are prepared by heating diamido-dithiophosphori acids with at least stoichiometric quantities of a hydroxyl compound, such as an alcohol, or compounds with alcoholic hydroxyl groups, optionally together with an inert solvent <FORM:0997656/C2/2> wherein R11 is hydrogen, alkyl, cycloalkyl or aryl.  The amine liberated is bound to the #O-ester by salt formation; the free acid may be liberated by reaction with aqueous or non-aqueous inorganic acids, or anhydrous organic acids.  Alternatively, the free acid or the amine salts may be reacted with suitable metal salts, especially of heavy metals (e.g. Ni, Zn, Pb), in aqueous or organic solvent, to give the corresponding metal salt of the #O-ester.  Examples are given for preparation of several #O-esters, as the primarily formed amine salts, and the conversion thereof to the free acids; also for the preparation of Ni salts from both the amine salts and the free #O-ester in the acid form. The compounds are used as intermediates for preparation of new phosphorus compounds, and as lubricant additives.
Patent GB-1278835-A (GB)
Title: Adjustable drill unit for churn drills and the like
Inventor: BARDWELL ALLEN EUGENE
IPC: E21B10/62
Filed: 1969-09-30
Abstract: 1278835 Rotary and percussive drills TRIDENT INDSUTRIES Inc 30 Sept 1969  47988/69 Heading B3C [Also in Division B4] A rotary and percussive drill bit comprises cutters 42, 50, secured in cavities 38 by a screw 54, shims 60 being provided for adjusting the radial positions of the cutters. Tungsten carbide reaming portions 64 may be provided on the drill bit shank 32, on the cutters, or on both the shank and cutters. The cutters may have carbide inserts 48, and a projection 62 is provided for breaking up the non-drilled material. Screw 54 may be replaced by two screws, one for each cutter, or by a nut and bolt. Three or more cutters may be provided.
Patent GB-1163575-A (GB)
Title: Improvements in or relating to Apparatus for use in Gas Supply Installations
Inventor: SCOTT MALCOLM FLEMING
IPC: F17D5/00
Filed: 1965-11-12
Abstract: 1,163,575. Gas distribution systems. M. F. SCOTT and R. D. CARTER. 10 Nov., 1966 [12 Nov., 1965], No. 48022/65. Heading F4X. A gas-tight housing 1 contains the outlet of a control cock 2, a filter 15 and a known governor 17 resiliently sealed by O-rings 27 and 26 and by a cover 28 such that the said filter and governor are each removable without disturbing or requiring the removal of the other. A meter is connected by pipes 20, 21 to the outlet from the governor, and to a chamber 22 which feeds the outlet 23. The cover 28 cannot be removed when the cock is open due to the cock handle 29 extending over the cover.
Patent GB-1130199-A (GB)
Title: Communications satellite
IPC: H01Q1/18
Filed: 1966-10-26
Abstract: 1,130,199. Spin stabilized satellites. BOLKOW G.m.b.H. 26 Oct., 1966 [29 Oct., 1965], No. 48078/66. Heading B7W. [Also in Division H4] In a communications satellite, Figs. 1a, 1b, having bodies A, B interconnected via an arm 1 and a directional aerial 6 aligned towards the centre of the earth when the satellite is in orbit, at least one of the bodies A, B is rotatably mounted on the interconnecting structure with a rotational axis perpendicular to arm 1 and aerial 6 is mounted on that end of the structure which is nearest to the earth. Both bodies A, B may be rotatable and each may be mounted by magnetic bearings in a yoke 2. The aerial may be a cavity resonator 5 feeding a horn 6 or may include a parabolic reflector. Due to gravity fluctuations &c. an oscillatory motion in the XZ plane may occur and, to counteract this, resonator 5 and horn 6 are controlled automatically so that the radiation axis points towards the earth's centre. Body B may be fitted with solar cells. When both bodies A, B are rotatably mounted their rotational axes must be mutually perpendicular, Fig. 2 (not shown).
Patent GB-1093094-A (GB)
Title: Improvements in or relating to cementing compositions
Inventor: MEAZEY ALYN EDMUND
IPC: C04B28/02
Filed: 1965-11-13
Abstract: A composition comprises Portland cement, and from 5 to 40 parts by dry weight per 100 parts of Portland cement of one or more terpolymers in latex form, wherein said terpolymers are derived from units of butadiene, styrene and acrylonitrile and wherein each terpolymer contains from 5 to 60% by dry weight of acrylonitrile units and the ratio of styrene units to butadiene units is from 1:8 to 8:1 by weight.  The composition may also contain aggregates, e.g. sand, gravel, quartz sand or lime.  The latex may contain an antifoaming agent and the composition may contain mortar or concrete setting accelerators or retarders and wetting agents.  The terpolymer may be prepared by aqueous emulsion polymerization in the presence of emulsifiers which render the latex stable to cement and aggregates, particularly non-ionic emulsifiers, e.g. an alkyl phenyl ether of a polyoxy ethylene glycol.ALSO:A composition comprises Portland cement, and from 5 to 40 parts by dry weight per 100 parts of Portland cement of one or more terpolymers in latex form, wherein said terpolymers are derived from units of butadiene, styrene and acrylonitrile and wherein each terpolymer contains from 5 to 60% by dry weight of acrylonitrile units and the ratio of styrene units to butadiene units is from 1:8 to 8:1 by weight.  The composition can also contain aggregates, e.g. sand, gravel, quartz or lime.  The latex can contain an anti-foaming agent and the composition can contain setting accelarators or retarders and wetting agents. Emulsifiers which render the latex stable to cement and aggregates can be incorporated in the composition, particularly non-ionic emulsifiers, e.g. an alkyl phenyl ether of a polyoxyethylene glycol.