baber/WOPTO huggingface dataset:
Patent GB-1412804-A (GB)
Title: Drive circuit for an inductuve device
IPC: H03K17/64
Filed: 1973-07-09
Abstract: 1412804 Switching inductive loads INTERNATIONAL BUSINESS MACHINES CORP 9 July 1973 [21 Aug 1972] 32627/73 Heading H3T Current of reversible polarity is fed to an inductiveload 10a, 10b, e.g. a magnetic recording head, a relay or a stepping motor, by a circuit comprising switching transistors 12, 14 having their emitters connected to a common constant current source 48 and their collectors to respective ends of the winding and either a single constant current source 26 connected to the centre point of the winding or separate constant current sources connected to opposite ends of the winding, the single current source or the sum of the separate current sources having a lower rating than the common source, diodes being connected between the collectors and earth to prevent negative current swings. The arrangement provides low voltage but not saturation voltage across the transistors, reducing dissipation to a value convenient for integrated circuit construction.
Patent GB-931698-A (GB)
Title: Improvements in or relating to feed-water heaters
Inventor: STUBBS JAMES
IPC: F22D1/32
Filed: 1960-09-22
Abstract: 931,698. Feed-water heater. RICHARDSONS, WESTGARTH & CO. Ltd. Dec. 22, 1961 [Sept. 22, 1960], No. 32638/60. Class 64 (3). In a feed-water heater comprising a vessel 10 containing a steam desuperheater 12, a drain cooler 16 and a condenser 14 situated at or near one end of the vessel 10, a number of feed water tubes 18 extend from a header 22 at the end of the vessel 10 farthest from the condenser 14, through the steam desuperheater 12, the condenser 14 and the drain cooler 16, the drain cooler having a condensate outlet 38 provided with a plurality of spaced apart flow restrictors 40 and 42. As shown, feed water enters at inlet 24 and travels through U-tubes 18, finally reaching header 22 and outlet 26. Superheated steam, i.e. from a turbine enters at inlet 28 and passes into steam desuperheater 30 part of which is baffled and surrounds a portion of the U-tubes 18. The other part of the steam desuperheater surrounds a portion of the drain cooler. The steam desuperheater 12 is constructed to prevent condensate entering it from the condenser 14. When the steam leaves the steam desuperheater it enters the condenser 14 and is condensed on the cooler part of the U-tubes 14 whence it falls under gravity through the open end of the drain cooler 16 and then follows a tortuous path until reaching condensate outlet 38. Outlet 38 contains a plurality of spaced apart flowrestrictors 40 and 42 in the form of discs with central openings. The flow-restrictors regulate the level of condensate in the vessel 10. The header 22 includes a tube-plate 20 of curved cross-section. In a modification (see Figs. 2 and 3, not shown), the steam desuperheater jacket and the drain cooler lie side by side.
Patent GB-175424-A (GB)
Title: Improvements in or relating to the undercarriages of perambulators and the like
IPC: B62B9/18
Filed: 1920-11-19
Abstract: 175,424. Ashton, W. E., and Ashton Bros. & Phillips, Ltd. Nov. 19, 1920. Springs, arrangement of and mounting bodies on; frame construction.-Relates to perambulators &c. in which the body is supported by top springs projecting sideways beyond the bottom springs. Bowsprings a are secured to the axles b and their ends are formed into eyes c adapted to be held in tubes d with slots g. The outer ends of the tubes d carry the top elliptical springs e, which may be interrupted. The springs are secured within the tubes by bolts i and washers h. In a modification, a long bolt passes through both tubes at each end to give rigidity to the frame. Mouse-trap or like springs may be placed within the tubes to co-operate with the main springs and increase the resilience. The member a or the members a, e may be formed of tubing to provide a rigid frame.
Patent GB-1519715-A (GB)
Title: Identifying cards
IPC: G11B7/24094
Filed: 1976-08-05
Abstract: 1519715 Identifying card LGZ LANDIS & GYR ZUG AG 5 Aug 1976 [14 Aug 1975] 32697/76 Heading G4M A card such as a credit card or identity card carries machine readable optical markings having a structure with at least 300 lines per mm between two protective layers. At least one protective layer is transparent to infra red light and both layers are opaque to light of shorter wavelengths. The markings may be formed by a hologram, a diffractive screen or miniature Fresnel prisms and may be formed on the inner surface of one of the layers or on a thin reflection layer, e.g. of metal sandwiched between the protective layers. The layers are bonded together such that if the layers are separated the information stored is destroyed.
Patent GB-412169-A (GB)
Title: Improvements in or relating to harvesting of peat or peat-forming materials more especially in connection with the production of peat powder
IPC: C10F7/00
Filed: 1932-11-19
Abstract: 412,169. Peat; feeding endless conveyers. GRAM, T., and TECHNO-CHEMICAL LABORATORIES, Ltd., 47, Victoria Street, London. Nov. 19, 1932, No. 32778. [Class 50.] Peat which has been loosened from the surface of a bog or depositing area by harrows &c. and partially airdried is harvested by means working over the area progressively from end to end of long sections having rail or other transport means running in the same direction the material being displaced laterally towards the railway. Elongated heaps are formed which are redeposited upon material ridged in other sections with progressive augmenting of the quantity of material displaced. A working area is divided by transport lines into sub-areas, e.g. 800 ft. in widthand operated in halves, each half being divided into 8 bays 3<a>-3<h> and a space 3<i> accommodating a transport line l<3> and temporarily stored material. The bog surface is disintegrated by harrowing &c. and the dried material collected on each bay as by being swept into a ridge along the centre of each bay by an implement comprising oblique elements in V-formation which gather the material inwards and discharge it at the rear in a continuous heap between their closer ends. A harvester, Fig. 4, travelling along bay 3<a> in the direction of arrow bl picks up the ridge heap b and transfers it to the middle of the next bay, e.g. upon already ridged material, and executes the next journey in the reverse direction along bay 3b thus delivering the two quantities of material into the middle of bay 3<c>. Preferably bays 3<c>-3<h> are first cleared, material from the more distant bays being moved over them to the storage heap. A number of harvesters may be used simultaneously, one machine, e.g. collecting from more than one bay or bridging two bays separated by one or more intervening bays. The harvester comprises a motor-driven trader d, a lateral framework d<2> supporting a pair of opposite-handed screws g, a paddle wheel j and a belt conveyer k which discharges the material entrained by the screws by means of a deflector m.
Patent GB-1440045-A (GB)
Title: Connector assembly
IPC: B62D55/084
Filed: 1974-07-25
Abstract: 1440045 Attaching nuts to workpieces CATERPILLAR TRACTOR CO 25 July 1974 [19 Nov 1973] 32860/74 Heading F2H To attach two members, such as a vehicle frame 12 and engine belly guard 14, together in a way to cater for misalignment of a bolt hole 40 in one of the members, a nut 50 is provided having two stub shafts 54 mounted in recesses 72 in brackets 70 mounted on the other member such that the nut cannot rotate but is limitedly movable pivotally and laterally to align with a bolt 66 passed through hole 40. The pivotal movement is limited by a flange 73 on the nut, and by a lock pin 76 which passes through the brackets 70 and mates with a slightly larger diameter semi-cylindrical groove 58 in the body portion 52 of the nut.
Patent GB-410767-A (GB)
Title: Improvements in or relating to electrolytic condensers
IPC: H01G9/08
Filed: 1932-11-22
Abstract: 410,767. Electrolytic condensers. SOLAR MANUFACTURING CORPORATION, 599, Broadway, New York, U.S.A. Nov. 22, 1932, No. 33027. Convention date, May 25. [Class 37.] An electrolytic condenser comprises electrode plates 7, 8 separated by an electrolytic paste 5 with layer 6 of textile material, the unit, after rolling, being directly held against relative movement of the plates by means of a metal clamp 1, 2, 3. The cathode foil 8 may be of greater length and of greater width than the anode foil 7 and two pre-formed foils may be used with or without one unformed foil. A layer of high-melting-point wax may envelop the clamped unit. 410,777. Inductances; electromagnets ; altering physical or molecular structure by mechanical treatment. ALLGEMEINE ELEKTRICITATS GES., 2, Friedrich Karl-Ufer, Berlin. Nov. 14, 1932, Nos. 32219 and 32220. Convention dates, Nov. 12, 1931 and Aug. 16, 1932. Addition to 363,697. [Class 37.] Ribbon of ferromagnetic material for loading coil cores, Krarup windings, and for use in other weak magnetic fields according to the parent Specification, is subjected to plastic deformation in order to reduce elastic stresses. The ribbon may be creased at regular intervals to form a polygonal core, the corners being rounded off to prevent stray fields thereat. An annular core may be formed by winding the ribbon on a pin of small diameter compared with that of the finished core, the ribbon retaining the desired curvature. The ribbon may be deformed in alternate directions, and in Fig. 3, it passes between rows of staggered rollers 6, 7 for this purpose, the ribbon being also curved permanently in the direction in which it is wound as a core. The tensile stress on drawing off or winding the ribbon is also a factor determining the deformation. After deformation, tempering at 100 to 350‹ C. may be effected. With the apparatus of Fig. 3 a de-burring operation is performed. Insulation may be effected by a paper strip, or by soaking the ribbon, before or after winding, in an insulating solution such as a varnish, or in water glass, or by chemically affecting the surface of the ribbon.
Patent GB-521395-A (GB)
Title: Improvements relating to exhaust silencers
IPC: F01N13/04
Filed: 1938-11-14
Abstract: 521,395. Exhaust-silencers. BLANCHARD, J. G. Nov. 14, 1938, No. 33086. [Class 7 (ii)] A number of silencing-units 2, each connected to a different cylinder or set of cylinders of the engine, are arranged in a common casing 1 so as to provide a path by which a portion of the exhaust gases escape into the casing at a high pressure, 'means being provided enabling another portion of the gases to expand into the casing, which is provided with a number of outlets through which the high-pressure gas exercises an ejector effect to carry with it the expanded gas in the 'casing. In Fig. 1, the units 2 are of the form described in Specification 448,878, and comprise inlets 3 leading to Venturi tubes H mounted in perforated cylindrical casings 5 with straightthrough outlets at 8. Opposite the outlets 8 are outlet openings 4 in the casing provided with deflectors 16 directed backwards with regard to the airstream. A cover 17, Fig. 2, may be secured over the openings 4, and is formed with lowered outlets 18 strengthened by ribs 20. The casing 1 may be shaped to the available space with the skin of an aircraft fuselage or engine nacelle. In the case of radial engines, the casing may be annular or part-annular and may be of streamline crosssection. It may also serve to heat air for use in heating the cabin, or to generate steam, air or water tubes being arranged for this purpose within the silencer casing. In another form, the silencing-units have their axis parallel to the axis of the casing. Silencing-units as described in Specifications 366,257 and 426,769 may also be used.
Patent GB-1168969-A (GB)
Title: A Stowable Bed
IPC: A47C17/40
Filed: 1968-07-11
Abstract: 1,168,969. Bedsteads. F. HERO, K. ODERMATT and W. MULLER. 11 July, 1968 [11 July, 1967], No. 33099/68. Heading A4J. In a cabinet bed, a counterbalancing mass 11 is carried, by pivoted cantilevers 10 resting on stops 12, so that its weight is transferred to the floor 2 at a point c, in the upward travel of the bed, beyond the point b, at which the weights of the bed and mass 11 are exactly in balance, thus providing an inclined position 8<SP>1</SP>, in which the bed is in stable equilibrium. On continued rotation of the bed about the pivots 8 a , the cantilevers 10 and mass 11 remain stationary. A foldable leg 15 is provided.
Patent GB-521496-A (GB)
Title: Improvements in or relating to rotation control mechanism
IPC: H02P7/06
Filed: 1938-11-15
Abstract: 521,496. Variable-pitch propellers. ECLIPSE AVIATION CORPORATION. Nov. 15, 1938, No. 33218. Convention date, May 16. [Class 114] [Also in Group XXVI] Mechanism for controlling the speed of an internal-combustion engine, when it is effected by means of a variable-pitch propeller, comprises an engine-driven governor, the loading of which is varied by a reversible electric motor which is selectively energizable to rotate in either direction, and associated with means for automatically de-energizing it, means for connecting and disconnecting it with a gear drive connected with the governor loading controlling member, and brake means for immediately .stopping the gear drive upon de-energization of the motor. In the form shown, a valve 110, for governing the fluid feed to a hydraulic pitch-adjusting unit, is controlled by a centrifugal governor 105 the spring 106 of which is controlled by a power screw 107 which is movable axially but prevented from rotating by means of a fixed rod 118a engaging an aperture in a switch-actuating member 118. The electric motor M is controlled by a switch 140 and operates the screw 107 by means of a clutch 115a, 115b, gears 147, 134, and a nut 108. The clutch 115a, 115b, and a clutch 121, 122 which is frictionally engaged by adjustable semi-circular brake bands 141, 142, Fig. 2, are controlled by a yoke 150 under the action of a solenoid 114. When the switch 140 is moved to either operative position, the solenoid 114 holds open the clutch 121, 122, and the motor M moves the screw 107 to the high or low pitch position. In either limiting position, the member 118 operates a switch 116, 119 or a switch 117, 120 to illuminate an indicator 113, when the switch 140 is manually returned to the neutral position N. The switches 116, 119 and 117, 120 also break the motor circuit at the spring contacts 119a, 120a. The de-energized solenoid 114 allows the clutch 121, 122 to close and the brake brings the screw 107 to a sudden stop. U.S.A. Specification 1,893,612 is referred to. The Specification as open to inspection under Sect. 91 comprises also a modification in which the indicator 113 and the switch parts 116-120 are omitted, and there are employed two other switches. One of these is manually operated, and the other is automatically operated by a relay at a predetermined speed as set on an indicator. This subject-matter does not appear in the Specification as accepted.
Patent GB-786993-A (GB)
Title: Improvements in or relating to low-alloy steels
IPC: C22C38/12
Filed: 1955-11-21
Abstract: Steel alloys of improved castability have compositions within the following range in per cent by weight .C.0.12-0.25 per cent .Si.0.25-0.5 per cent .Mn.0.5-1.8 per cent .V.0.05-0.2 per cent .N.0.015-0.028 per cent .Al.0.03-0.07 per cent .Fe.the remainder The alloy may also contain up to 0.5 per cent each of Ni, Mo and Cr. Al and N are maintained in solution by accelerated cooling of the casting to 1000 DEG C., e.g. in a continuous casting process or by rapid rolling of the casting down to thin dimensions.  Alternatively intermediate or final products may be solution heat treated and then cooled rapidly to 1000 DEG C.  The steel is then subjected to one or more normalizing treatments between A3 and 950 DEG C.  In an example the latter treatment comprises normalizing at 930 DEG C. for 1 hour, cooling in air, reheating to 930 DEG C. for 1/2 hour, cooling in air, annealing at 680 DEG C. for 1 hour and cooling in air.
Patent GB-1304304-A (GB)
IPC: A61L2/07
Filed: 1971-07-15
Abstract: 1304304 Controlling steam autoclaves F LINDER 15 July 1971 [15 July 1970] 33281/71 Heading A5G The degree of saturation of steam supplied to a sterilizing autoclave chamber 1 is controlled .by the apparatus shown in which the steam flows via conduit 4 and valve 5 to a chamber 2 on its way to the autoclave chamber 1. A pressure-responsive element 10 in the latter operates when the pressure reaches a predetermined valve to close valve 5 and open valve 6 whereby a spray of water enters the chamber 2 via the nozzle 9. When the temperature in 2 falls to a predetermined value, the pressureresponsive element 7 operates to close valve 6, the pressure in chamber 1 falls and element 10 operates to open valve 5 and admit more steam which saturates with water vapour in passing through chamber 2 until no water remains when the temperature and pressure rise until element 10 again operates and the cycle is repeated. Valve 12 is used to evacuate the autoclave at the end of a sterilization run and remains closed during the sterilization process.
Patent GB-1345662-A (GB)
Title: Cationic dyestuffs their manufacture and use
IPC: C07D209/14
Filed: 1972-06-17
Abstract: 1345662 Substituted N-methyl diphenylamines BAYER AG 17 July 1972 [17 July 1971] 33354/72 Heading C2C [Also in Division C4] N - Methyl - 2 - methyldiphenylamine - 4<SP>1</SP>- aldehyde is prepared by reacting N-methyl-2- methyl-diphenylamine with a mixture of dimethylformamide and phosphorus oxychloride. The 2-methoxy and 2-ethoxy compounds are prepared similarly.
Patent GB-972912-A (GB)
Title: Improvements in or relating to winding drums
IPC: B21C47/00
Filed: 1960-09-29
Abstract: 972,912. Rollers. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. Sept. 29, 1960 [Oct. 7, 1959], No. 33402/60. Heading F2U. [Also in Division B3] An expansible drum for winding cold-rolled strip &c. comprises pivoted segments 4, Fig. 1, adjustable radially by a spreader wedge 6 with internal hydraulic cylinders 7, Fig. 2, distributed along its length and containing pistons 8 supported by a drum block 1. The cylinders are interconnected by channels 13, 14 coupled to a fluid pressure system through a hollow piston 9 and a central passage 11 in the block 1. Plugs 18 accessible from the drum periphery are provided for cutting off the supply to predetermined end cylinders 7 when coiling strip which is narrower than the width of the drum. End rings 17 limit the opening of the segments 4, and springs 16 return the segments to minimum diameter when the hydraulic pressure is released. Lubrication passages may be provided in the spreader wedge 6 and the segments 5 engaged thereby to reduce friction between the sliding faces. The end of the strip is clamped on the drum by an eccentric 3. The hydraulic system for actuating the spreader 6 comprises a pair of accumulators, one operating at low pressure for effecting initial rapid movement and a second operating to hold the spreader in the expanded position during reeling. The second accumulator may be switched in manually or automatically by a manometer as a result of a rise in pressure in the system during reeling. The high pressure accumulator and a relief valve permit some contraction to prevent damage due to overload on winding. Specification 972,913 is referred to.
Patent GB-1099179-A (GB)
Title: Operating means for a gas stove
IPC: F23N5/10
Filed: 1966-07-26
Abstract: 1,099,179. Controlling burners. METAALWARENFABRIEK JOH.TH BENRAAD N.V. July 26, 1966 [Aug. 5, 1965], No. 33597/66. Heading F4T. In a control arrangement for a gas stove having a number of burners ignited by means of a single pilot burner 16 supplied with gas through a thermally protected main valve 12 the pilot flame co-operates with a first burner 20 which ignites the remaining burners and operates a thermo couple 21 controlling valve 12. When a button 1 is pressed a lever 3 connected to an electric ignition apparatus is operated through a rod 2 and a rod 5 depresses, through a spring 6, against a weaker spring 7 a valve stem 8 to close a valve 11 and a further depression to open valve 12 and allow gas to flow to pilot burner 16 and to cause a spark at plug 17 to ignite the pilot burner. Button 18 is now depressed to open a valve 19 and supply gas to the burner 20 which ignites and heats the thermocouple 21 and thus energizes an electromagnet 22 to maintain the valve 12 open, button 1 being now released. The valve 19 is kept open by a catch 24. Other burners 28, 32 may now be ignited as desired by pressing the buttons 25, 29.
Patent GB-458981-A (GB)
Title: Fluid pressure motors having pistons of the oscillating type
IPC: F02N7/08
Filed: 1935-04-23
Abstract: 458,981. Semi-rotary engines. COFFMAN, R. A., 4733, Center Avenue, Pittsburg, U.S.A. April 23, 1935, No. 33600/36. Divided out of 455,630. [Class 110 (ii)] [See also Group XXVII] In a fluid-pressure motor suitable for starting aeroplane and like engines, a rotary movement is imparted to a driving member 106 within a cylinder or chamber axially of which a driven member 110 is moved into and out of clutching engagement with a member 136 of the engine &c. to be started or driven, by means of a stationary cam 124 engaged by an element 123 carried by the member 110 and held by a spring 126 in engagement with the cam 124. The cam controls the action of the spring in such a manner as to permit it to effect the clutching engagement and to maintain such engagement during more than one revolution of the member 110. The cam also enforces axial movement of the member 110 in the opposite direction during reverse rotation of the member 110 to effect the unclutching operation. As shown, the cam 124 is a ring mounted in the housing of the motor and having circumferential cam surfaces spaced at varying radial distances from the axis and at varying distances from the end faces of the ring, to enable the bolt 123 carried by the driven sleeve 110 to make two revolutions before being disengaged from the cam surfaces. The driving and driven sleeves 106, 110 are connected through gearing 113, 114, as described in Specification 455,686, so that the sleeve 110 makes two revolutions to one of the sleeve 106. When the motor is at rest, the bolt 123 is in contact with the front face of the portion 124f of the cam ring. On rotation of the sleeve 110 to bring the bolt 123 to the position b, Fig. 5, the sleeve 110 is moved forward by the spring 126, Fig. 1, into clutching engagement with the engine member 137, the bolt 123 moving through a gap in the cam ring into contact with the cam-ring supporting- member 124<1>. The sleeve 110 then makes two revolutions while the bolt 123 travels twice around the cam track 124b, 124c, 124d and comes to the point l, Fig. 7. As the shaft 137 begins to turn under its own power, the sleeve 110 tends to be moved rearwardly by the clutch teeth 136 ; the bolt 123 is moved slightly away from the cam surface 138 and is then forced radially by the spring 130 into engagement with the inclined surface 139 on the cam ring. During the two return rotations of the sleeve 110, the bolt 123 comes to the top of the cam incline 139. In the event of backfire of the engine being started, the sleeve 110 is retracted by the engagement of the bolt 123 with the incline 124f on the cam ring, the bolt being projected by its spring into the gap 124d in the cam surface 138 and then riding up the incline 124f. Specification 455,685 also is referred to.