baber/WOPTO huggingface dataset:
Patent GB-1370129-A (GB)
Title: Turret assembly for a machine tool
IPC: B23Q16/10
Filed: 1971-09-13
Abstract: 1370129 Indexing turrets H BUCHMEIER 13 Sept 1971 [17 Dec 1970] 42556/71 Heading B3B  An indexable turret assembly for a machine tool such as a lathe comprises a rotatably indexable portion 2 and a stationary portion 1 mountable on the machine tool, the portion 2 being indexable by way of gearing from a motor 5 which is remotely controlled, a threaded connection 8 being provided between a driven member 7 on a body portion 4 of the stationary portion 1 and a nut 9 attached to the portion 2, the rotation of the member 7 by a gear 13 driven from the motor 5 effects lifting of the turret axially to disengage an axial tooth coupling 10 which at the same time facilitates engagement of a latch 22 carried by the member 7 to engage a recess 32 in the turret portion 2. Further rotation of the member 7 subsequently rotates the turret which overrides spring biased pawls 36 mounted in a control ring 33 attached to the body portion 4 and the spring biased detent pins 56, 57. The indexing movement is permitted to overrun the required indexed position by approx. 8-10 degrees whereupon the motor 5 is reversed to rotate the members 7 and 2 in the opposite direction which effects registering of the spring detent pin 56 in its appropriate detent 58 and also engagement by a pawl 36 with a lift member 42 to raise the latch member 22 to disengage the rotary member 7 from the recess 32 in turret portion 2. Continued rotation of the member 7 subsequently effects lowering of the turret portion 2 to engage the toothed coupling 10 and hence lock the portion 2 in its new indexed position on the stationary portion 1. The motor control is effected by switches 18 operated by an actuator 19 attached to the indexable turret portion 2. The gearing for effecting the drive from the motor 5 may be parallel spur gearing in which the motor is mounted eccentrically to the axis of rotation of the turret portion 2 or by epicyclic gearing with the motor mounted concentric with the turret axis or by way of worm and wheel drive in which the axis of the motor is transverse to the axis of the turret portion 2. In the alternative embodiments also, the control ring 33 is omitted and a drag ring which actuates both the pawls and the detent pins is incorporated. The motor drive may be electric, hydraulic or pneumatic.
Patent GB-1300306-A (GB)
Title: Spool valve
IPC: F15B13/04
Filed: 1970-09-07
Abstract: 1300306 Valves OLMSTED PRODUCTS CO 7 Sept 1970 [4 Dec 1969] 42785/70 Heading F2V A spool valve comprises two spool members telescopically arranged in a casing, each member having an opening therein communicating with an internal bore of the member. As shown in Fig. 1 the valve is connected to a pump, reservoir and working cylinder 12. Control chambers 58 and 60 are pressurized to force the members together in which position the chamber 30 connected to the pump is cut-off from the working cylinder 12, the latter being connected to the reservoir on the one hand by chambers 38, 26 and line 36 and on the other hand by chamber 50 bores 96, bore 72, chamber 38 and line 36. Venting the control chambers 58 and 60 allows pump pressure acting on faces 88, 90 of the spool members to force the latter apart in which position (Fig. 4, not shown) the pump is connected to both sides of the working cylinder. The piston 97 moves rightward under the differential force on it. Control pressure applied to chamber 60 also causes movement of the piston 97 to the right but without fluid loading since the chamber 50 is connected to the reservoir (Fig. 2). Venting chamber 60 and pressurizing chamber 58 causes movement of the piston 97 leftwards (Fig. 3, not shown).
Patent GB-1530302-A (GB)
Title: Electrical inverter circuit
IPC: H02M7/53862
Filed: 1975-10-21
Abstract: 1530302 Transistor oscillators GENERAL ELECTRIC CO 21 Oct 1975 [21 Oct 1974] 43132/75 Heading H3T In a D.C.-A.C. inverter having a transformer to the primary of which a D.C. is alternately switched by a feedback winding coupled to the switching elements, the switching efficiency is improved by latching means Q6 responsive to the transformer primary current to rapidly discharge charge stored in the switching elements. The latch also responds to excess current to inhibit operation under overload conditions. A starting circuit is also provided. Starting.-Capacitor C1 charges through resistor R15 the base-emitter of Q9 and latch Q6 in its unlatched state, until the voltage across it is sufficient to cause Zener diodes D12, D13 to conduct, diverting current from Q9 and thus turning it off. Q8, Q11 then turn on turning on in turn latch Q7 to allow capacitor Cl to discharge through R16 providing base current to turn on main switching element Q1. As the current through Q1 and the primary winding 20 increases, the current through resistor R3 also increases until Q4 turns on. This turns off Q3 in the emitter circuit, and also turns on latch Q6 to discharge to earth a charge stored in the base of Q1, which rapidly turns off. Once the charge is all withdrawn from Q1, Q6 will turn off again. The change in field of the transformer will now turn on Q2 and the cycle will repeat. Overload.-If the primary current is excessive due to an overload, the current through R4 will, again, be sufficient to turn on Q6 and stop oscillation. The starting circuit will again become operative to provide lower frequency pulses to Q1. Excess temperature.-Diodes D15, D16 are connected in a current stabilizing circuit 26 and changes in temperature result in a change in potential at the collector of Q5 which, again, will turn on latch Q6 to inhibit oscillation. In a modification, Fig. 6 (not shown) the temperature sensing circuit is omitted and the latches are semi-conductor controlled switches having both anode and cathode gates.
Patent GB-933882-A (GB)
Title: High-temperature wear resisting steel
IPC: C22C38/22
Filed: 1960-12-16
Abstract: An alloy steel having good wear resistance and corrosion resistance at elevated temperatures contains in percentage by weight: .C.0.95-1.2 .Si.0 -1 .Mn.0 -1 .Cr.13-18 .V.0.5-2.5 .Mo.3.5-4.5 .S.-0.025 .P.-0.025 .Fe.balance The steel is heat-treated by oil-quenching from 2000 DEG  F., tempered for 2 hours at 1000 DEG F., refrigerated at - 100 DEG  F., and tempered again at 1000 DEG  F. for 2 hours.  Use of the alloy for bearings, cams, shafts, and gears, is referred to.
Patent GB-1155379-A (GB)
Title: Apparatus for the Continuous Checking of the Pull on Cables in Tension
IPC: G01L5/04
Filed: 1966-09-29
Abstract: 1,155,379. Dynamometers. C.R.F. OFFICINE MECCANICHE DI PRECISIONE S.p.A. Sept.29, 1966 [Oct. 1, 1965], No.43493/66. Heading G1W. Apparatus for continuously checking the pull on cables in tension comprises winding drums 1, 2 on which the cables are wound, a control assembly with a main shaft 7 for transmitting a driving or braking couple to the drums through a pinion 6 coaxial with the shaft 7 a reduction gear box 14 for transmitting motion between the shaft 7 and pinion 6 and a dynamometer 16 for sensing the couple applied. The gear box 14 is rotatably mounted on the common axis X-X of the pinion 6 and shaft 7 and has a projection 15 bearing on the dynamometer 16 fixed on the framework 3 in which shafts 4, 5 support the drums 1, 2. The apparatus is for use in stringing high voltage electric power cables.
Patent GB-895454-A (GB)
Title: Improvements in electrical generator regulators, suitable for mechanically-propelledvehicles
IPC: H02J7/22
Filed: 1959-12-22
Abstract: 895,454. Automatic voltage-control systems; automatic regulators. BOSCH G.m.b.H., ROBERT. Dec. 22, 1959 [Dec. 24, 1958], No. 43523/59. Addition to 839,591. Class 38 (4). [Also in Group XXXVI] An automatic voltage regulator for a shuntwound generator comprises a casing enclosing an electromagnetic relay, having a voltage coil, an auxiliary coil and contacts for varying the field excitation of the generator, a PN semiconductor device being connected in series with the auxiliary coil and in parallel with a resistive lead extending outside the casing. As shown, Fig. 1, an armature G of a generator for a mechanically-propelled vehicle lighting system is connected to a battery B and a lighting circuit S, L through a cut-out 13-15, 23. The voltage of the generator is maintained constant by controlling the excitation current of a field 16 by a vibratory relay having a voltage coil 10 and a contact assembly 11, 12 connected across a resistor 18 in series with the field. An auxiliary current coil 26 of the vibratory relay is connected in series with a semi-conductor diode 25 across a lead 42 and the current coil 13 of the cut-out. The voltage/current characteristic of the semi-conductor diode 25 has a low slope for an applied potential difference of less than 0.3 v. and a high slope above this potential and the total resistance of the lead 42 and current coil 13 is selected so that at a predetermined overload currents from the generator the current through the auxiliary coil 26 increases significantly so that the flux in the core of the vibratory relay is increased to reduce the value to which the generator voltage is regulated. To reduce the heat dissipation within the casing 50, Fig. 3, containing the cut-out and vibratory relay, the lead 42, diode 25 and resistor 18 are mounted on the outside of the easing. The lead 42 is formed into a twin-conductor with a lead 44 to the diode 25. The current density in the lead is approximately 15 amps per square centimetre and the length 25 centimetres. The total resistance of the lead and current coil is less than 0.5 ohms.
Patent GB-890363-A (GB)
Title: Combined step and stool
IPC: B60B33/06
Filed: 1959-12-22
Abstract: 890,363. Combined steps and stools. CRAMER POSTURE CHAIR CO. Inc. Dec. 22, 1959 [Dec. 22, 1958], No. 43539/59. Classes 52(1) and 52(3) A combined step and stool has a hollow frustoconical base 10 with continuous rubber bumper 26 and supported on castors 34, a top 12 of lesser area being supported on legs 16, 18, 20 secured to base 10 by screws 24. A further circular rubber bumper 32 is secured to the side wall of base 10. Castors 34 each include a wheel 36 and supporting bracket 38 slidably mounted on a stem 40 slidably received in a sleeve 42 secured to side wall 33, a spring 50 being confined between sleeve 42 and a washer 52 so that when pressure is applied to the article, springs 50 are compressed and bumper 26 grips the floor to prevent rolling.
Patent GB-1564481-A (GB)
Title: Crhomiferous dyestuffs their preparation and their applications ro the dyeing or bulk colouration of the synthetic polyamides
IPC: C09B45/02
Filed: 1977-10-21
Abstract: To prepare chromiferous complex dyes corresponding, in acidic form, to the formula (I) <IMAGE> with A, X1, X2 and X3 as in Claim 1, the 1/1 chromium complex of an o,o'-dihydroxymonoazo compound of formula (II> HO-A-N=N-B-OH  (II> is reacted in alkaline medium with an equivalent or slightly lower molar proportion of an o-carboxy-o'-aminomonoazo compound of formula (III) <IMAGE> The complex can be neutralised with salts of alkali or alkaline-earth metals or protonated ethanolamines. The optional substitutent(s) of the radical A are chlorine or bromine and alkyl, alkoxy, acylamino, sulpho, nitro or sulphamoyl groups optionally substituted by one or two alkyl groups on the nitrogen, the substitutent(s) of the radical B are chlorine or bromine atoms and/or sulpho or hydroxyl groups.
Patent GB-1209516-A (GB)
Title: Chemical lapping method and apparatus
IPC: B24B37/04
Filed: 1968-09-16
Abstract: 1,209,516. Etching. NORTH AMERICAN ROCKWELL CORP. 16 Sept., 1968 [15 Sept., 1967], No. 43983/68. Heading B6J. A process for etching or chemically lapping a surface comprises disposing a reagent, which at ambient temperature is unreactive with the surface, between the surface and a lapping plate, and heating the reagent by friction resulting from relative motion between the surface and the lapping plate so that the reagent decomposes to provide a species which etches the surface. Examples include (i) etching magnesium oxide with an alkyl/aryl polyoxyether phosphate salt of a pyrophosphate or alkyl phosphate, the effective etchant comprising HPO 4 <SP>2-</SP> ions; (ii) etching quartz with chromium tetrafluoride in an oil emulsion, in glycerine or in ethylene glycol, thermal decomposition producing fluorine as the effective etchant; and (iii) etching ferrite with 1-amino-4-chloro-2- methylanthraquinone hydrochloride salt or N - (4 - amino - 3 - methoxyanthraquinon - 1 - yl) - p - toluene sulphonamide hydrochloride, thermal dissociation producing HCl as the effective etchant. A non-aqueous solvent may be used; e.g. an azoline-type amide. Apparatus, Fig. 1.-The lapping apparatus 10 comprises a planar table 12 with a sunken region 13 from which projects a drive-shaft 15 carrying a rotatable lapping table 16; the table 16 comprises a lapping plate 32, preferably of reactor-grade graphite, and a retaining ridge 34 for the liquid etchant. The specimen holding apparatus 17 performs an ellipsoidal motion over the surface of table 16 so that the specimens will be exposed to the lapping surface at constantly changing radial locations; this motion is provided by shafts 24, 25, cranks 22, 23, connecting-rods 18, 21 and weighted shaft 19. Individual specimen holders 30 project downwards from the disc 28 of apparatus 17. The upper surface of plate 32 may be curved to any desired shape, preferential etching occurring on those regions of the specimen which depart most from the curvature of plate 32; the surface of plate 32 may have grooves 33 to allow the etchant to flow under the specimens and the reagent may also be maintained under pressure, Fig. 4 (not shown). Heating of the reagent to slightly below its decomposition temperature may be effected, e.g. by lamp 35. The etching reagent may be filtered, recirculated and recharged.
Patent GB-1222117-A (GB)
Title: Optical scanner assembly
Inventor: BROUWER FRANS
IPC: H04N1/00
Filed: 1968-02-02
Abstract: 1,222,117. Facsimile transceiver. STEWARTWARNER CORP. 2 Feb., 1968 [2 Feb., 1967], No. 44219/70. Divided out of 1,222,113. Heading H4F. The subject-matter of this Specification is identical with that disclosed in Specification 1,222,113, but the claims are concerned with an optical scanner unit mounted on a timing belt.
Patent GB-1049184-A (GB)
Title: Lightweight plaster
Inventor: CUNNINGHAM KENNETH GERRARD
IPC: C04B28/14
Filed: 1963-11-11
Abstract: A lightweight plaster composition comprises calcium sulphate hemihydrate or anhydrite, lightweight aggregate, a surface-active agent, and a water-soluble or water-dispersible polymeric material consisting of polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene oxide or a water-soluble cellulose ether, the composition being free from any constituent which would precipitate the polymeric material from an aqueous solution thereof.  The lightweight aggregate may be expanded perlite, exfoliated vermiculite, pumice or sawdust and may constitute 5-30% by weight of the composition; a heavy aggregate such as ground limestone may be added in amount not exceeding 70% by weight of the composition.  The polymeric material usually constitutes 0.01-2.0% by weight of the composition, and the surface-active agent 0.001-0.2%.  Suitable surface-active agents are sodium alkyl aryl sulphonates, alkali metal salts of alkyl sulphates, formaldehyde-sodium aryl sulphonate condensation products, anhydrous polyethylene glycol condensates, anhydrous cellulose sulphite liquor, saponified pine resin or potassium rosinate. Hydrated lime binder in an amount not exceeding 20% by weight of the composition may also be present.  In examples the hemihydrate plaster is retarded with a proteinaceous material.
Patent GB-945866-A (GB)
Title: Improvements in or relating to road traffic detection systems
IPC: G01D5/14
Filed: 1961-12-13
Abstract: 945,866. Vehicle detectors. SIEMENS & HALSKE A. G. Dec. 13, 1961 [Dec. 13, 1960], No. 44604/61. Heading G4Q. [Also in Division G1] A road traffic detector includes a magnet D and a Hall generator HG situated in the field of the magnet, a vehicle passing over the detector varying the magnetic flux and therefore also the voltage output of the Hall generator and the output being fed to a receiving circuit to control traffic lights, or to operate a speed measuring circuit. In Fig. 1 the output voltage variations are converted into pulses which are counted on a counter 7. The detector of Fig. 3 includes two permanent magnets D1, D2, and a Hall generator HG and an arrangement of two of these detectors is also described. If stationary vehicles are to exert no influence on the receiving circuits a differentiating circuit e.g. a transformer or capacitor is connected between the Hall generator and any receiving circuit.
Patent GB-1482454-A (GB)
Title: Method for producing stabilized ammonium nitrate
IPC: C05B13/06
Filed: 1974-10-15
Abstract: 1482454 Stabilized ammonium nitrate VEBACHEMIE AG 15 Oct 1974 [18 Oct 1973] 44641/74 Heading C1A Ammonium nitrate stabilized against physical disintegration is prepared by adding to ammonium nitrate in the liquid phase, i.e. to a melt or solution, 0À1 to 1À0 wt. per cent of a polyphosphate based on the weight of the nitrate, substantially all of the water is then removed from the ammonium nitrate to enable solidification of the product. Preferred polyphosphates are the pyrophosphates and higher polyphosphates of the alkali metals, alkaline earth metals (particularly magnesium) and ammonium or mixtures thereof. In one embodiment the ammonium nitrate is a melt from which substantially all of the water is removed before adding the polyphosphate in molten or solid form after which the melt is cooled to solidify the nitrate. In a second embodiment the polyphosphate is added in solid form or as a concentrated aqueous solution to the ammonium nitrate at any point in the concentration of an ammonium nitrate solution.
Patent GB-1187719-A (GB)
Title: Improvements in or relating to a Machine for Automatically Aligning Thread Bobbin Tubes
IPC: B65H67/06
Filed: 1968-09-19
Abstract: 1,187,719. Packaging bobbins; endless conveyers. COTONIFICIO ROSSI S.p.A. 19 Sept., 1968 [19 Sept., 1967], No. 44646/68. Headings B8A and B8C. [Also in Division D1] A machine for automatically aligning bobbins 1 which are wider at one end than the other and inserting the bobbins in a case 31 comprises an inclined receiver 2 for the bobbins, at least one correspondingly inclined elevator 8 having pusher elements 9 spaced apart and running in a channel formed in the receiver bottom, each pusher element 9 being intended for one bobbin, a substantially horizontal double track conveyer 19 adjacent the top end of the elevator and comprising two conveyer tracks parallel to each other and spaced apart a distance slightly less than the diameter of the wide end of the bobbin 1 so that the bobbins 1 hang between the conveyer tracks and are supported by their wide ends, a device 29 being disposed at the delivery end of the conveyer to swing up the bobbin end in the direction opposite to the direction of transport, and a guide means 30 being provided for introducing the falling bobbins, wide end forwards, into a transport case 31. The channel in the bottom of the receiver 2 is slightly greater than the outside diameter of the bobbin wide end and the distance between the pusher elements 9 being slightly greater than the overall length of the bobbin. The elevator 8 is preferably in the form of an endless V-belt and runs in the matchingly profiled bottom portion of the channel in the receiver. At the upper end of the receiver, the elevator is guided through a passage having relatively tall vertical walls 18, the end face 118 of which is bevelled to deflect any bobbin which is lying transverse to the direction of movement of the elevator. The pulleys for the top end of the elevator and the receiving end of the double track conveyer are mounted on a common shaft 13. The double track conveyer is also preferably in the form of endless V-belts which run in matchingly profiled preferably adjustable supporting rails. The device for swinging up the bobbin ends comprises a channel-shaped member 29 inclined downwardly into the path of the bobbins. A tipping box 3, 5 is provided for supplying bobbins to the receiver 2.
Patent GB-929342-A (GB)
Title: Fastener driving apparatus
Inventor: WANDEL OSCAR ALFRED
IPC: B25C5/16
Filed: 1959-07-07
Abstract: 929,342. Nailing. FASTENER CORPORATION. July 7, 1959, No. 44806/62. Divided out of 929,341. Class 89 (3). The subject-matter of this Specification is identical with that described in Specification 929,341, but the claims are directed to a fastener-driver having a movable cylinder which is normally closed by a valve on the driverhousing. Specification 929,343 also is referred to.
Patent GB-1178316-A (GB)
Title: Improvements in or relating to Insulated Electric Cables.
Inventor: LAWRENSON THOMAS
IPC: H01B9/02
Filed: 1967-10-03
Abstract: 1,178,316. Cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 2 Oct., 1968 [3 Oct., 1967], No. 44889/87. Heading H1A. A cable core (or group of cores) has on its surface a tubular light-current conductor or screen formed from an electrically conductive tape (e.g. copper or silver foil) which carries on at least its inner surface a coating of an adhesive which is effective and permanently tacky at all temperatures likely to be attained by the cable after the application of the tape. The outer surface of the tape may be free from adhesive or may be coated with a thermoplastic material. The adhesive may be transferred to the surface(s) of a copper foil tape from a transferable adhesive-coated'tape. The tape may be applied helically or longitudinally with overlapping or abutting edges, or a small gap between the edges. The tubular lightcurrent-conductor or screen may be supplementary to a tubular screen of another form; for example it may be surrounded by a screen of fine wires, constructed in accordance with Specification 1,161,879.
Patent GB-1190340-A (GB)
Title: Improvements in or relating to Spot Type Disc Brakes
IPC: F16D66/02
Filed: 1968-09-23
Abstract: 1,190,340. Disc brakes. ALFRED TEVES G.m.b.H. 23 Sept., 1968 [15 Dec., 1967], No. 45003/68. Heading F2E. In a spot type disc brake (Fig. 1), a piston 4 operates through a chamfered brake lining carrier 3 and brake lining 2 to a brake disc 1, so that wear of the brake lining causes the leading edge of the carrier 3 to contact the brake disc 1, when the carrier tends to tilt and subsequent wear eventually produces contact between the lining and disc at the opposite edge (Fig. 3). The consequent increase in noise is a warning of the worn condition.
Patent GB-1513276-A (GB)
Title: Small synchronous motor
IPC: H02K21/14
Filed: 1975-10-31
Abstract: 1513276 Synchronous motors SOC INDUSTRIELLE DE SONCEBOZ SA 31 Oct 1975 [14 Nov 1974] 45376/75 Heading H2A In a synchronous motor wherein a sheet metal pole piece body has an annular disc part 10 resting on the outer surface of an end wall 1a of a sheet metal housing 1, and has rectangular pole piece arms 9 projecting through apertures 11 in the wall la whereby to encircle a rotor 4, 5, 6, a support 8 for a rotor bearing 7 extends through the disc part 10 and through the wall la and has both an outer flange 8a resting on the disc part 10 and also an inner rim 8b peened over the wall la.