baber/WOPTO huggingface dataset:
Patent GB-558645-A (GB)
Title: Electric measuring, indicating, recording or controlling apparatus
IPC: G01R27/02
Filed: 1942-05-01
Abstract: 558,645. Impedance measurements. REDIFFUSION, Ltd., and ADORJAN, P. May 1, 1942, No. 19867/43. Divided out of 558,614. [Class 37]  An apparatus for observing the impedance of a load comprises means for obtaining a direct potential which is dependent upon the voltage of an alternating or pulsating E.M.F. being applied to the load, a transformer which, when the apparatus is arranged to observe the load, has a primary winding serially included in the load circuit means operative to obtain a direct potential from the E.M.F. appearing across the secondary of the transformer, and means responsive to a change of the relative values of the two potentials for performing an indicating, recording, or controlling operation. In the apparatus shown in Fig. 1 a transformer 4 supplies a load circuit represented by a resistance 5, inductance 6, and condenser 7, which circuit may be, for example, a public telephone line or a broadcast rediffusion network. Two pairs of terminals 8, 9 and 10, 11 are normally connected as shown in dotted lines but for measuring the impedance of the load they are connected to the measuring apparatus by terminal leads 12, 13, 14, 15. A potential transformer 16 and a current transformer 17 are connected as shown. Rectifiers 18, 19 are connected in series with the secondary windings of these transformers and a resistance 20 having a sliding contact 21 is connected between sides of similar polarity. A centre-zero micro-ammeter 22 is connected across the resistance 20. The slider 21 is adjusted until the instrument 22 gives a zero indication, the position of the slider then being dependent on the impedance of the load circuit at the frequency of the alternating E.M.F. A scale calibrated in terms of impedance may be provided. Fig. 2 shows a modification in which the change in load on the transformers 16, 17 by movement of the slider 21 is avoided. A rectifier 23 and resistor 24 are connected to the sliding contact 21 of a potentiometer resistance 25, which is connected in series with a fixed resistor 26 across the secondary of the transformer 16. Across the secondary of the transformer 17 is connected a tapped resistor 27 with a tapselecting switch 28. This is connected to a rectifier 29 and resistor 30. A centre-zero microammeter 31 is connected between corresponding ends of the resistors 24, 30. Balance is effected by adjusting the slider 21 of the potentiometer resistance 25. The tapping switch 28 enables the range to be changed. The apparatus may alternatively comprise two transformers each of which has a primary winding serially included in a separate leg of the load circuit. The secondary windings of these transformers feed into separate rectifying means and provide a direct potential dependent on the current flowing in the circuit. Electron discharge valves may be used for amplifying the extracted E.M.F.s, the direct potentials, or the differential value of these potentials. Specifications 558,614 and 558,646 are referred to.
Patent GB-1314685-A (GB)
Title: Arc welding power supply assembly
IPC: B23K9/10
Filed: 1970-04-24
Abstract: 1314685 Welding by fusion CHEMETRON CORP 24 April 1970 [25 April 1969] 19920/70 Heading B3R [Also in Division H2] In an arc welding supply apparatus comprising an outer housing 1 which contains a transformer 5, a rectifier assembly 13 employing triggerable rectifiers 12, and a control assembly 20 for controlling the arc voltage and the slope of the arc current-voltage characteristic by altering the firing of the triggerable rectifiers, a control housing 21 is releasably secured to a panel 4 of the outer housing 1 and contains control elements which are connected to the control assembly 20 by a cable 45 whereby the housing 21 may be used in a location remote from the housing 1. The housing 21 may contain duplicated control elements for use with two welding torches in a dual control arrangement: The assembly 20 comprises printed circuit cards (26-32, Fig. 4, not shown) which are plugged into a master circuit card (22) situated behind the housing 21 for ease of access. Main thyristors 12 are mounted on aluminium extrusions 17 and are connected to the secondary of the transformer 5. A saturable reactor 9, a resistor 10 associated therewith, and a control transformer 8 together with all the above components are cooled by a fan 11. The apparatus may be used in a dual control circuit for two welding torches as in Specification 1,314,684.
Patent GB-166814-A (GB)
Title: Improvements in mechanism for manipulating the controlling elements of aircraft
IPC: B64C13/02
Filed: 1920-07-09
Abstract: 166,814. Holle, A. A., (Lamberts, J. L.). July 9, 1920. Steering and balancing.-The control column v, pivoted at v<1>, operates either controlling- element independently through slots 8 in a plate 6 engaging rollers 5 on arms 4 of bell-cranks 1, to the other arms of which the control cables y, z are attached. Parts of the slots 7 are in the form of arcs struck about the pivot v<1> so that when one bell-crank is operative the other is inoperative, and preferably there is a predetermined amount of overlap in the inoperative position of the two slots. The ends 3 of the bell-cranks may be connected by a spring 10 to reduce the power required. The apparatus may be used in conjunction with servo motors.
Patent GB-516185-A (GB)
Title: Improvements in and relating to the adjustment of aircraft cameras
IPC: G03B15/00
Filed: 1938-07-07
Abstract: 516,185. Aeronautical cameras. WILLIAMSON, S., and WILLIAMSON MANUFACTURING CO., Ltd. July 7, 1938, No. 20153. [Class 40 (i)] The adjustment of an aircraft camera is effected through servo-mechanism controlled by the adjustment of an associated instrument, e.g., a gyroscopic device or a manually - controlled ground speed indicator or view-finder. The lens cone of the camera may be secured in a ring 7 resting on ball-bearings 8 in a frame 5 tiltably mounted on trunnions 6 supported by a frame 3 itself mounted on trunnions 4 carried by a frame 1 secured to the aircraft by bolts 2. The frames 3, 5 are tiltable about their trunnions by screws 14, 17 respectively engaging nuts 15, 18 pivoted to the frames and actuated through gearing from reversible electric motors 10, 16 mounted respectively on the fixed frame 1 and the frame 3, the supply of current to the motors being controlled by pairs of switches 26 carried by the frames 3, 5 and operated by Bowden wires 22, 23 connected to the associated instrument which may be mounted in the same manner as the camera. The wire 22 operates lever 24, Fig. 4, pivoted on trunnion 4 of the frame 3 and having a rounded outer end adapted to engage either of. the press-buttons 27 of the switches 26 mounted on the frame according the tilting action required. The wire 23 operates a similar lever 25 on the frame 5. Since the switches move with the frames, the press-buttons ride off the levers after the requisite tilting has been affected. As the mounting ring 7 is adjustable through a considerable angle, the simple lever switch device used with the frames 3, 5 is replaced by a differential gear mechanism, wherein a cam disc 28 mounted between the switches 26a is rotated by one member of the gear, the mounting ring 7 is geared to a second member, and the B.owden wire 36 rotates the third.
Patent GB-791770-A (GB)
Title: Improvements in or relating to the preparation of tropinone
Inventor: ELMING NIELS
IPC: C07D451/06
Filed: 1955-07-13
Abstract: Tropinone is prepared by heating an aqueous solution of succinic dialdehyde, methylamine, and acetone dicarboxylic acid to a temperature substantially above room temperature, preferably 55-60 DEG  C.  The succinic dialdehyde may be prepared in situ by the acid hydrolysis of 2,5-dimethoxytetrahydrofuran, and is not separated prior to the condensation reaction.  The concentration of 2,5-dimethoxytetrahydrofuran (and therefore of succinic dialdehyde) is 0.12-0.44 mols. per litre, and of the other reactants about 1.25 mols. per mol. of dialdehyde.  The reaction mixture is adjusted to a pH of 5.0, which rises during the reaction to 5.4.  The reaction time is about 90 minutes.  After the reaction, potassium carbonate and common salt are added, and the tropinone extracted with ether.  The ethereal extract is dried over magnesium sulphate and distilled.
Patent GB-230364-A (GB)
Title: Improvements in or relating to laminated springs
IPC: F16F1/18
Filed: 1924-10-07
Abstract: 230,364. Woodhead, G. A. Oct. 7, 1924. Laminar springs.- Relates to laminar springs in which one or more auxiliary or rebound leaves are arranged on the master leaf on the opposite side thereof to the usual supplementary leaves, the auxiliary leaves or some of them being connected at or near their ends to the main portion of the spring so as to take part of the load. The rebound leaves c in a cambered spring are cambered to the same degree as the master leaf a so as normally to lie without stress in uniform contact with the master leaf, and with one another when more than one rebound leaf is used. The clips described in Specification 188,224 are used to connect the rebound leaves to the main portion of the spring. As shown, V-shaped clips d embracing the supplementary leaves b are secured to lugs e integral with the rebound leaves, but this arrangement may be reversed, the clips being secured to lugs integral with the supplementary leaves. A spring comprising a master leaf and rebound leaves with no supplementary leaves is also described.
Patent GB-469350-A (GB)
Title: A process for the manufacture of esters of pine wood pitch
IPC: C09F1/00
Filed: 1936-07-23
Abstract: An ester is produced from pine wood pitch by esterifying with an alcohol.  The pine wood pitch is obtained as a residue after the separation of rosin from pine wood extract and comprises oxidized resinous matter, oxidized terpenes, polyphenols and polymerized terpenes.  Fatty acids and glyceride oils may be added to the pitch before esterification.  The alcohol employed is preferably polyhydric, e.g. a glycol, glycerol or pentaerythritol. The esterification is effected by heating at from 100--300 DEG  C., esterification catalysts, e.g. hydrogen chloride, sulphuric acid or p-toluene sulphonic acid, being present if desired.  In examples the pine wood pitch is heated with either glycerol, glycerol and lime, mono-, di-, or tri-ethylene glycol, diethylene glycol and castor oil, or ethylene glycol and soya bean oil.  The castor oil and soya bean oil may be replaced by other oils, e.g. olive, rapeseed, cottonseed, coconut, linseed, or chinawood oil, or by fatty acids such as stearic, oleic, or palmitic acid.  The esters may be used in electrical insulation, varnishes, and resins.
Patent GB-1174192-A (GB)
Title: Quick detachable coupling for example, for conduits or rods
IPC: F16L37/10
Filed: 1967-05-03
Abstract: 1,174,192. Pipe &c. couplings. RAYMOND INTERNATIONAL Inc. 3 May, 1967 [23 May, 1966], No. 20429/67. Heading F2G. A detachable coupling comprises telescopically interengaging coupling parts 10, 11 and a locking sleeve or nut 14 for retaining the parts in coupled relation the sleeve being threadedly longitudinally adjustable on the part 11 and rotatable thereon eccentrically with respect to the part 10. A relatively eccentrically positioned flange 16 and mating annular groove 17 are provided on the sleeve and part 10 respectively whereby when the sleeve is turned to one angular position with respect to the part 11 a crescent-shaped portion of the flange protrudes into the groove to lock the parts against separation; when the sleeve is turned to another angular position the flange does not protrude into the groove and the part 10, 11 are rendered separable. To ensure that the sleeve will remain in the locking position, a spring-pressed ball, or a set-screw, is located in a longitudinal slot 26 in the part 11; the ball may be used as a stop means to indicate that the coupling parts are in locked-together condition.
Patent GB-150524-A (GB)
Title: Improvements in sparking plugs
IPC: H01T13/24
Filed: 1919-08-20
Abstract: 150,524. Coyle, J. S. Aug. 20. 1919. Sparking-plugs.-The central electrode moves axially, against the pressure of a spring 17, on the suction stroke causing the forced terminal 25 to rub over the terminal 26. Guides 19 working in grooves 20 are provided at the outer end of the electrode. The inner end of the electrode is fitted with piston-rings 16 and packing 27.
Patent GB-148834-A (GB)
Title: Combined letter and envelope for advertising purposes
IPC: B42D15/08
Filed: 1920-07-10
Abstract: 148,834. Bonafede, V. July 10, 1920. No Patent granted (Sealing fee not paid). Blotting-appliances.-A letter-card contains one or more folded sheets 15 of blotting-material, writing-paper &c., gummed to the fold 2 of the cover 1, advertisements being placed on the sheets and cover.
Patent GB-1259777-A (GB)
Title: Improvements in or relating to brush-lifting gear for electrical machines
Inventor: SHEFFIELD BERNARD RAYMOND
IPC: H02K23/52
Filed: 1968-05-01
Abstract: 1,259,777. Rotary actuators. PLESSEY CO. Ltd. 30 April, 1969 [1 May, 1968], No. 20545/68. Heading H1P. [Also in Division H2] A rotary actuator for brush-lifting gear (see Division H2) comprises an annular stator ring 33 formed with concentric rings of poles 35, 36 magnetizable by a solenoid coil (not shown) so as to produce rotation of pole-pieces 43 or a rotor (not shown) from the position shown to that shown at 43a against the action of spiral return springs 46. Polepieces 43 and the surfaces of poles 35, 36 are angularly displaced with respect to each other so that the gaps between them become narrower as the rotor rotates whereby the torque of the actuator increases. Stops are provided to limit movement of the rotor in either direction.
Patent GB-775524-A (GB)
Title: Apparatus for applying coating material to steam iron soleplates
IPC: B05B3/10
Filed: 1955-07-15
Abstract: A machine for applying coating material to the walls of the boiler cavity of steam iron soleplates comprises a number of laterally spaced spray elements, spaced from supporting means for a number of sole plates, for projecting sprays of coating material through openings in the supporting means into the boiler cavities, and means for effecting relative movement between the supporting means and the spray elements whereby a number of successive coats of coating material are projected on to the walls of the boiler cavity of each sole plate.  Sole plates 14, Fig 1, are mounted by pins 12 and straps 13 on a <PICT:0775524/III/1> table 2 rotated by a motor 7 to position the boiler cavities of the sole plates over corresponding openings 11 equally spaced on the table.  Coating material is projected through the openings by a series of spray elements 23, the table being rotated at such a speed that one coating is dried before the next coating is applied from the next spray element.  The spray elements which are dish shaped are mounted in pairs on a shaft 24, supported by brackets 25 on a plate 27 mounted on upright supports.  The shaft 24 is rotated so that liquid supplied from manifold 37 to pipes 38 ending in the recessed part of the elements is projected from the edges of the elements.  Liquid is supplied to the manifold by means of a motor 40, a pump 41, a tank 42 and a standpipe.  The spray from the elements may be concentrated by a shield 52 with apertures.  The shaft 24 and the spray elements project into a spray chamber comprising a base 3 and concentric spaced walls 4 and 5.  For more complete spraying one shaft 24 may be rotated in the opposite direction to the others.  The table may be held stationary and the spray elements rotated.  Alternatively the sole plates may be mounted on an endless conveyer.  The spray elements may be replaced by a wheel having control recesses to which the liquid is supplied, one wheel taking the place of two spray elements.  Specification 773,741 is referred to.
Patent GB-318349-A (GB)
Title: Improvements in or relating to epicyclic gearing
IPC: F16H13/06
Filed: 1928-07-17
Abstract: 318,349. Parnall, G. G., and Pobjoy, D. R. July 17, 192'8. Epicyclic gearing. -In epicyclic gearing, for use for example in superchargers of radial aircraft engines, the spindles 12 of the planet-pinions 14 are carried in radial slots 7<b>, 8<b> in the driving-carrier 7, 8, the pinions, which engage the driven sun-wheel 15 on the shaft 16 by toothed engagement, engaging frictionally under centrifugal action with a floating annulus 18 carried on shoulders 14<a> on the pinions 14. A brake 19, comprising shoes operated by levers and links from a screw-and-nut device, is applied to the annulus to effect a drive to the shaft 16 and the supercharger fan 10 secured thereto, and the operating lever may be interconnected to the throttle control lever. The carrier 7, 8 is secured to a clutch drum 6 clutched to the crank-shaft. Screw means 30, 32, 33 ,34 are provided for adjusting the hollow shaft 16 axially for positioning the fan 10. Oil fed to the central bearings is prevented from entering the supercharger by a diaphragm 35.
Patent GB-1459847-A (GB)
Title: Method and apparatus for applying plastics materials to generally planar surfaces
IPC: B29C48/09
Filed: 1974-05-10
Abstract: 1459847 Moulding sealing rings in situ AMERICAN CAN CO 10 May 1974 [27 Sept 1973] 20741/74 Heading B5A [Also in Division F2] A beer can end 15, comprises vent and pouring openings 17, 19, each defined by a pair of pierced or slitted metal paths which are sealed, on the can interior side 13, by plastics sealing material rings 23, which have been simultaneously extruded e.g. from plastisol, into contact with the side 13 from annular extrusion orifices. The orifices are provided on a head 21 located either above, or below, the surface 13 for vertical reciprocating movement to intermittently simultaneously extrude the rings 23 e.g. during the last 10% of the range of movement of the head 21 towards the surface 13 with the rings separating from the orifices as the head moves away from the surface. Each orifice is defined between external and internal die parts 59, 57, and the intermittent extrusion is effected by delivering a pressurized supply of the material thereto from separate passages 27, via a valve spool 31 which reciprocates alternatively to obturate, and then to place spool passages 43 in communication with passages 29, 45, which are provided in a surrounding sleeve 33 and which respectively communicate with the passages 27, and with passages 47 leading to the orifices via passages 55. Intermediate the passages 47 and 55, plates 53 are provided which are rotatably adjustable to alter the alignment between each passage 47 and a slot 63 in a plate 53, to variably throttle the delivery of material to the orifices. The orifices are positionable adjustable with respect to the surface 15, by micrometer adjustment. The valve spool 31 is reciprocated by pressurized air alternately admitted to either end thereof by passages 35, via an electric solenoid pilot valve which is actuated by a signal related to the movement of a press ram which reciprocates the head 21. The valve sleeve 33 is provided with scavenging grooves 67, through which air and escaping plastisol is vented. The valve spool 31 and sleeve 33 are respectively made of carbide, honed to a specified roundness accuracy and finish, and ceramic coated aluminium. The material is supplied to the head 21 from a pump, via a filter and accumulator which smooths pressure fluctuations, a thermostatically controlled heater, a pressure regulator, and a further accumulator. Flexible tubes feed the material to the head 21 at a manifold 25, with excess material being recirculated.
Patent GB-1128542-A (GB)
Title: Superconductor strip members
IPC: C23C26/00
Filed: 1966-05-10
Abstract: 1128542 Coating niobium with tin SIEMENS SCHUCKERTWERKE AG 10 May 1966 [10 May 1965] 20747/66 Headings H1A A8 A5 and A4D A super-conductor strip is produced by arranging a tin member between two niobium strips and heating to melt the tin and form layers of niobium stannide, the niobium strips being maintained with a substantially constant spacing of less than 50Á, so that the molten tin is held between the strips by capillary action. The strip may be manufactured by a continuous process using the apparatus of Fig. 1 (not shown) in which a tungsten wire (4) is wound in a spaced helix round a tin strip (1), niobium strips (12, 13) are placed on each side of the wound strip, and the assembly is passed longitudinally through a furnace containing an atmosphere of argon to melt the tin and form the niobium stannide layers. The furnace contains an aluminium oxide guide-member (25) Fig. 3 (not shown) which is provided with a rectangular groove (31) in which the heated strip runs; the edges of the groove (31) prevent lateral movement of the strip and aluminium oxide bars (32) are placed on top of the moving strip to prevent buckling. The surfaces of the strip may be electrolytically plated with copper to form a parallel normal conductive layer and to prevent flux jumping. The spacing between the niobium strips may also be achieved by deforming the edges of the strips, Figs. 6 and 7 (not shown). The tin member may be a wire instead of a strip. The super-conducting strip is flexible and may be wound into a coil.
Patent GB-1342117-A (GB)
Title: Fibrous metal filaments
IPC: B21C37/04
Filed: 1971-04-19
Abstract: 1342117 Making filaments; extruding BRUNSWICK CORP 19 April 1971 [29 Jan 1970] 20790/71 Headings B3A and B3P [Also in Division E1] A metal filament, which may be solid, tubular of bimetallic, is made by surrounding a blank 14, Fig. 21, of the filament metal with a matrix metal 50, constricting the assembly and then removing the matrix. After sheathing the blank with the matrix, which may be swaged thereon (Example 4), a number of these assemblies 12, Fig. 10, are placed in parallel within a can 16 to which end caps 17, 23 are welded and the can is evacuated through pipe 26 which is subsequently pinched and welded at 26b; a heater 27 facilitates an improved vacuum. Spacers (19, Fig. 6, not shown) or metal powder (21, Fig. 7, not shown) may surround the assemblies within the can. The resultant bundle (31, Fig. 11, not shown) is then constricted by hot extrusion through heated dies (32). The extruded workpiece has its ends trimmed by cutters (36, Fig. 12, not shown) and is then subdivided into shorter lengths (35, Fig. 13, not shown) by cutting wheels (38). Each length (35) has end pieces (39, 40, Fig. 14, not shown) welded thereto and after reheating, is further extruded through dies (41, Fig. 15, not shown). Alternatively the bundle may be compacted by upsetting in a closed die, Fig. 4 (not shown), or by hot rolling, Fig. 16 (not shown), or by hot extrusion followed by hot rolling. Thereafter the workpiece is cold drawn in stages through dies (44, Fig. 17, not shown) with intermediate annealing. The cold drawing may be omitted or the hot working steps may be eliminated and only the cold drawing is then performed. Finally the matrix material and the can are removed by electrochemized dissolution, thermal removal, selective oxidation, mechanical removal or by acid leaching with nitric or phosphoric acid. When forming a tubular filament, a hollow starting workpiece 14 has a matrix core 49 which is subsequently removed. The final filament may be of tubular hexagonal cross-section, Fig. 24 (not shown). The filament may be made of nickel, stainless steel, titanium or titanium alloy. Bi-metallic filaments may comprise: copper or mild steel core surrounded by stainless steel; Monel metal (RTM) core surrounded by stainless steel or niobium or tantalum or beryllium; mild steel core surrounded by nickel-base super alloy or nickel or aluminium or titanium; copper core surrounded by gold or platinum; aluminium core surrounded by copper or mild steel or magnesium; molypermalloy core surrounded by copper. The sheathing matrix may be of mild steel, copper, aluminium or aluminium alloy, stainless steel, Monel metal (RTM). The can may be of mild steel copper or Monel metal (RTM). Many examples are given.