baber/WOPTO huggingface dataset:
Patent GB-1080696-A (GB)
Title: Transductor control circuit
Inventor: COLE FREDERICK CHARLES
IPC: B03C3/68
Filed: 1963-06-06
Abstract: 1,080,696. Controlled non-linear inductors. STANDARD TELEPHONES & CABLES Ltd. June 5, 1964 [June 6, 1963], No. 22534/63. Heading H3B. [Also in Division H2] A transductor controlling circuit for controlling the supply of current from an A.C. source to a load circuit comprises a pair of transductors TDR1, TDR2 each having a D.C. bias winding 1 or 4 and a pair of supply current control windings 2, 3 or 5, 6 and rectifiers MR1, MR2 which cause the supply current to flow in opposite directions through each control winding with respect to each transductor. The arrangement is such that in the absence of bias on the bias windings 1, 4 the cores of the transductors TDR1, TDR2 are normally near saturated during each half of the A.C. supply while with bias applied each core is alternately saturated during alternate half-cycles of the supply to a level of saturation determined by the bias. The D.C. bias windings 1, 4 are connected in series opposition and the bias is derived from a fullwave unsmoothed rectifier circuit. Alternatively the bias windings may be divided windings. During the positive half-cycle of the supply, i.e. terminal 10 positive with respect to 11, current flows through windings 5, 2 and in the opposite half-cycle current flows through windings 3 and 6. If the D.C. bias is applied to windings 1, 4 with the polarity shown then in the positive half-cycle the bias m.m.f. will aid the supply m.m.f. in transductor TDR2 and oppose in TDR1. Similarly during the opposite half-cycle the m.m.f.'s aid each other in winding 3 and oppose each other in winding 6. The reactive volt drop across a transductor is reduced during the half-cycle in which the m.m.f.'s aid each other in the transductor. The D.C. windings may be in parallel aiding in order to reduce second harmonics. The arrangement may be applied to three-phase circuits and used in the control of flashovers in electrostatic precipitators, Fig. 2 (not shown).
Patent GB-985031-A (GB)
Title: Improvements in or relating to container closure means
IPC: B65D47/20
Filed: 1961-06-22
Abstract: 985,031. Valves. K. NAKAMURA. June 22, 1961 [Oct. 13, 1960], No. 22565/61. Heading F2V. [Also in Division B8] A valve-like closure, e.g. for a flexible tube, comprises a flexible sleeve-like member 6, Fig. 2, attached at one end to a neck 3 and at the other end to a collar 4 screw-threaded on to the neck 3, rotation and axial movement of the collar 4 causing the sleeve to fold over and close the mouth of the neck. The sleeve 6 is preferably of polyethylene. In a modification, Fig. 5, the sleeve 10 is connected to the base of a nozzle 9 threaded into the interior of neck 8.
Patent GB-1176572-A (GB)
Title: Method of Forming a Sheet Metal Panel
Inventor: MYERS LYELL VIRGIL
IPC: B21D53/04
Filed: 1967-05-16
Abstract: 1,176,572. Making architectural and heatexchanger panels. OLIN MATHIESON CHEMICAL CORP. 16 May, 1967, No. 22598/67. Heading B3A. A sheet metal heat exchanger or architectural panel is formed by first heat-softening a composite of at east two unified sheets at least one of which is expanded between a pair of dies to form a panel having internal hollow passageways and finally heating the panel to increase the bond strength between the contacting portions of the sheets. As described, unified aluminium alloy sheets preferably having stop weld material only in the area where the sheets are to be initially separated are heated at 850-960‹ F. and hot-rolled 14-75%, followed by cold-rolling 20-60% to produce a relatively weak bond between the sheets. After softening the rolled composite at 675-700‹ F. for 1 to 3 minutes, it is expanded between a pair of dies by fluid pressure at 2000-3000 p.s.i. The expanded panel is finally heated at 750- 1000‹ F. for 10 to 60 minutes to increase its bond strength.
Patent GB-502069-A (GB)
Title: Improvements in or relating to holders for ray-emitting tubes
IPC: H01R33/02
Filed: 1938-07-29
Abstract: 502,069. Two-part couplings. KORNMANN, F. July 29, 1938, No. 22629. Convention date. Aug. 1, 1937 [Class 38 (i)] A tube holder for ray emitting tubes is provided with contact sleeves 3a and 3b flexibly supported or the free ends of conducting rods 4a and 4b in order tc adapt the distance between their axes to the distance between the legs 1a and 1b of the tube. The legs are provided with a further resilient support such as a rubber disc 6. The contact sleeves mav be slotted and engage contacts 2a and 2b on the legs of the tube. The rods 4a and 4b are electrically connected to plug pins 5a and 5b. Openings 8a allow air to circulate for cooling purposes.
Patent GB-614798-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H1/16
Filed: 1946-07-30
Abstract: 614,798. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. July 30, 1946, No. 22706. Convention date, July 31, 1945. [Class 38 (v)] A switch has fixed resilient contacts 15 mounted on base plates 12 having recesses for the contact-reinforcing springs 15<1> and fixed in grooves of insulating side plates 10. A slidable insulating carrier 20 guided by grooves in the side plates 10 carries contact rollers 23 loosely mounted on inclined bearings 24 held by projections 27 extending into the carrier. As the switch opens the final break occurs at the centre of the contacts 15 and the mutual repulsion between the arcs causes them to bow outwards and to be deionised and extinguished by spaced metallic plates 28 which may be magnetic.
Patent GB-664985-A (GB)
Title: Improvements in, or relating to, goods elevators
IPC: B60P1/44
Filed: 1949-09-02
Abstract: 664,985. Load-handling appliances. FELCO HOISTS, Ltd. Sept. 2, 1949. [Sept. 6, 1948] No. 22744/49. Classes 78 (iii) and 78 (iv). A goods elevator has a load platform incorporated in identical and parallel deformable quadrilaterals having only one of the two sides of each quadrilateral which extend from the platform supported at and rotatable about its end, remote from the platform to provide a fulcrum to raise and lower the platform, and a flexible connection is attached to the platform and a support and intermediately movably attached to the platform carrying side a haulage cable being attached to the other of the two sides. The platform 8 is pivoted to a lever 6 which is pivoted at ground level at 4 to a support 3 pivotally connected to the rear part of the chassis 2 of the vehicle. A rigid link 18 is pivoted to the other end of the platform and has secured a hoisting cable 9 intermediate its ends which passes over a pulley 10 and is connected to the hoisting means 11 beneath the floor 1 of the vehicle. A taut cable 15 is connected to the platform. 18 and passes under a pulley 17 on the lever 6 and is connected at 16 to the floor 1. Operating the hoisting means 11 raises the platform 8 maintained horizontal by the cable 15 and by a flexible connection 21 connecting the end of the link with the joint 4. In a modified form the flexible connection 21 is secured at a point intermediate the ends of the lever 6. The flexible connection 21 may be replaced by a rigid rod.
Patent GB-227531-A (GB)
Abstract: 227,531. Stokes, R. O. Oct. 18, 1923. Actuating-mechanism; multiple-way valves.-A multiple-way valve device particularly applicable to suction drying apparatus and to rotary filters is provided with a valve member adapted to be rotated with a step-by-step movement and when opposite one or other of the outlet ports adapted to be moved axially to establish communication through that port. Fig. 1 shows the device adapted to admit compressed air successively to a number of drying trays. The valve casing has a number of ports B adapted to connect the trays to the suction ports C while the valve member has a single port H connected through a hollow spindle E and angle G to a source of compressed air. The valve member is rotated with a stepby-step movement by a single tooth on a disc L<1> rotated by a worm J and worm wheel K and engaging a Geneva wheel R. The valve member is moved axially by a leved N actuated by a cam L on the disc L'. Fig. 4 shows a modification of the apparatus applied to a rotary filter. In this form the valve casing rotates with the filter which is rotated by a worm wheel V and has a series of sector-shaped chambers A<2> connected through pipe B<1> with the various sections of the filter and through spring-loaded lift valves S with a chamber A<1> supplied with compressed air through a conduit E<2>. The valve spindle E has an arm E<1> fitted,with a spring-loaded valve U adapted when the spindle is moved axially to close communication between the outlet C and one section of the filter and open the corresponding valve S to admit compressed air to that section. In order that the valve may be successively applied to the chambers A<2> it is periodically permitted to lag behind the valve casing but when in contact with its seat is caused to rotate at the same speed as the casing. To do this a worm wheel V<1> is mounted on the casing and arranged to rotate at six times the rate of the wheel V and so cause a cam W to oscillate a bell-crank X and move the valve to engage its seat at the same time causing dogs Y on the spindle to engage carresponding dogs Z on the pipe E. The valve is returned to its normal position by a spring and counterweight when the dogs are disengaged. A modification is described showing a similar arrangement of lift valves housed in a fixed casing.
Patent GB-1121606-A (GB)
Title: Surgical lighting apparatus
IPC: F21V8/00
Filed: 1967-05-16
Abstract: 1,121,606. Illuminating operating tables. ANCIENS ETABS BARBIER, BENARD & TURENNE. 16 May, 1967 [23 May, 1966], No. 22780/67. Heading F4R. A shadowless lighting arrangement for illuminating operating tables consists of a source of light 4 enclosed in a casing 2 from which the light passes by means of a light guide 3 to a reflector 11 from which it is reflected by a system of mirrors 12, 13 to produce a uniform illumination on a table C. The system of reflectors is mounted in a cupola 1, the light guide 3 passing axially through this. The light falls on a parabolic or elliptical reflector 11, the end of the guide 3 being arranged at the focus of the reflector. The reflector passes the light to a conical mirror or a ring of plane mirrors 12, and thence to a similar ring 13. The source 4 may be arranged at the focus of a spherical elliptical mirror 6 with the interposition of a heat absorbing screen 8. The mirror 6 may be replaced by a condensing lens.
Patent GB-763587-A (GB)
Title: Adjusting mechanism for agricultural implements
IPC: A01D34/24
Filed: 1952-09-11
Abstract: 763,587. Agricultural implements; harvesting machines. FERGUSON, Inc., H. Sept. 11, 1952 [Sept. 29, 1951], No. 22800/52. Classes 6(1) and 6(3). Adjusting mechanism for use with an agricultural implement such as a forage harvester, comprises a fluid operated actuator assembled with a counterbalancing spring interposed with the actuator. As shown the harvester is mounted on the side of a tractor and a frame 13 provided with a cutter 15 is pivotally mounted about a pivot 25 and is adjusted by the mechanism which is connected to the frame 13 and to a rigid arm 30 in the machine frame 11. A cylinder 27 is provided with a supply duct 24 and is formed with a guide member 46 fixed in the cylinder by means of snap rings 47 and provided with a vent hole 51 and having a bore which receives a piston rod 40 provided with a sleeve 50 which acts as a stop. A piston 28 is mounted on one end of the rod 40 and the other end of the rod abuts against a plate 55 supported by a sleeve 56. A stud 57 engages in a screw-link 58 the other end of which engages a stud 59 attached to lugs 31 in the frame 13 by a bolt 61. A compression spring 29 is mounted between a plate 65 on the cylinder 27 and the plate 55. Pressure fluid is directed to the actuator by a conduit 22, valve 23 and conduit 24 to raise the frame 13, the valve operating to exhaust the actuator and allow it to return to its retracted position by the weight of the frame, an operating element 23<SP>1</SP> of the valve being operated by the lever 21 which controls the pump of the tractor hydraulic system. Specification 470,069 is referred to.
Patent GB-585437-A (GB)
Title: Improvements in or relating to electronic control systems suitable for capacitor discharge welding systems
IPC: B23K11/26
Filed: 1944-11-17
Abstract: 585,437. Capacitor discharge welding. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 17, 1944, No. 22802. Convention date, Nov. 24, 1943. [Class 38 (iv)] In a circuit for controlling the discharge of an adjustable capacitor 3 through an inductive load, e.g. the primary winding 9 of a welding transformer 11, reversibly-connected ignitron valves 55, 57 are interposed between capacitor 3 and the load, control circuits being provided for rendering the said ignitrons conductive to permit a single cycle of oscillating current to flow in the discharge circuit. Capacitor 3 is charged from an A.C. source 5 through a rectifying circuit 7 incorporating grid-controlled valves 25, 27 of the type known under the Registered Trade Mark of " Thyratron." Welding is initiated by the closure of a switch 117 which energizes a hydraulic controller 127 to move the welding electrode 17 on to the.material 19 at the same time operating a pressure switch 109. The latter switch opens contacts 107 which disconnect a flux-resetting circuit 96 from the transformer 11, and closes contacts 141 which energize a relay 145. This relay closes contacts 157 to connect a source of biassing potential 159 across the grid circuits of valves 25, 27, thereby rendering them non- conductive and terminating the charging of capacitor 3. At the same time contacts 147 are opened to disconnect an auxiliary capacitor 149 from its charging circuit 153 and connect it across the primary 155 of a peaking transformer 75, the subsequent impulse from which renders a valve 63 connected across the anode 61 and ignition electrode 67 of ignitron 55 conductive, in turn rendering ignitron 55 conductive and discharging capacitor 3 through the welding transformer 11. Due to the inherent inductance of the discharge circuit, capacitor 3 is charged with opposite polarity, whereupon a valve 85 connected across ignitron 57 is rendered conductive since the grid 91 and cathode 75 thereof are connected together through a resistor 93, thereby rendering ignitron 57 conductive and again discharging capacitor 3 through transformer 11. This inverse discharge, although of insufficient magnitude to produce a further weld, returns the flux of transformer 11 a considerable way towards its original value, the remaining charge being stored in the capacitor 3 at the correct polarity in readiness for a further charge. Switch 117 is then opened, permitting movement of the material 19 to a new position and also allowing the capacitor 3 to receive a further charge by the consequent opening of contacts 141 removing the bias on valves 25, 27. The simultaneous closure of contacts 107 reconnects the flux-resetting circuit 96 across part of the primary 9 of transformer 11 to return the flux thereof to its original value, thereby preventing saturation of the transformer. Switch 117 may be operated manually or automatically by a suitable timing circuit.
Patent GB-1292785-A (GB)
Title: Derivatives of dexa- and beta-methasone, their production and use
Inventor: PIFFER GIORGIO
IPC: A61K31/57
Filed: 1971-04-19
Abstract: 1292785 Esters of dexamethasone and betamethasone ISF SpA 19 April 1971 [17 Oct 1970] 22811/71 Heading C2U Novel steroids of the formula (wherein R 1  is a saturated or unsaturated hydrocarbon group of 8-14 carbon atoms and n is 3, 4, 5, 6 or 7) are prepared by reacting beta- W ethasone or dexamethasone, or an ester thereof e.g. a 21-mesylate, with the appropriate acid R 1 CH = CH(CH 2 ) n CO 2 H or a salt thereof. Suitable acids include oleic, linoleic, linolenic and arachidonic acids. Dexamethasone and betamethasone 21-mesylates are prepared from the free 21-ols and mesyl chloride. The novel steroids are stated to possess antiinflammatory activity, and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-359591-A (GB)
Title: Improvements in or relating to methods of and apparatus for scanning or visualizing objects
IPC: H04N3/04
Filed: 1930-07-29
Abstract: 359,591. Antidazzle screens. TATE, A. O., 18, Summerhill Gardens, Toronto, Canada. July 29, 1930, No. 22872. [Class 97 (i).] The area of each aperture 21 .. 24 in a scanning apparatus is directly proportional to its speed of travel to ensure that an equal proportion of light is transmitted from each part of the object. The apertures are variably spaced from the centre of a rotating disc, and each is bound by radii, giving a circumferential dimension varying directly as the distance from the centre, and by arcs of concentric circles giving equal radial dimensions. The object 20 may be scanned once in each revolution of the disc, Fig. 1 (not shown), or a plurality of times in opposite directions, that is with an undulating or vane motion from the inner edge to the outer edge, which is scanned twice in succession by the apertures 23, 24, and then from the outer edge to the inner edge, which is scanned twice in succession by the apertures 25. A similar disc with larger apertures is used for controlling the light incident on an observer's eye from an object that would otherwise be too bright, for example a vehicle head light.
Patent GB-775459-A (GB)
Title: Improvements in or relating to hydroxyalkyl ethers of phenol-formaldehyde resins
IPC: C08G8/28
Filed: 1955-08-09
Abstract: Polyalcohols are made by etherifying phenolformaldehyde novolaks having from 4 to 10 phenolic units per molecule, in the presence of a basic catalyst, with from 0.85 to 1.2 mol. per phenolic hydroxyl of ethylene and/or propylene oxide, under (at least initially) superatmospheric pressure, said alkylene oxide being introduced into the reaction zone at such a rate that the reaction temperature is in the range 120-225 DEG  C., the resultant polyalcohols being insoluble in aliphatic, aromatic and terpene hydrocarbons and soluble in one or more aliphatic alcohols, ketones and ethers.  Specified solvents are ethanol, acetone, ethyl acetate and dioxane.  The resultant polyalcohols may be esterified with drying or semi-drying oil fatty acids.  Specified basic catalysts are sodium, potassium and barium hydroxides and tertiary amines.  In the examples, novolaks prepared from phenol and formalin in the presence of (1) hydrochloric acid, (2) sulphuric acid, and (3) oxalic acid are reacted with (1) ethylene oxide in the presence of caustic soda and esterified with linseed oil fatty acids (2) propylene oxide (catalyst barium hydroxide) and esterified with drying oil fatty acids (3) ethylene oxide (catalyst caustic soda) and esterified with linseed oil fatty acids. Specification 775,460 is referred to.
Patent GB-1031358-A (GB)
Title: Pulse resynchronizing system
IPC: H03K5/05
Filed: 1964-06-03
Abstract: 1,031,358. Transistor pulse circuits. CONTROL DATA CORPORATION. June 3, 1964 [June 4, 1963], No. 22921/64. Heading H3T. In a system for synchronizing an asynchronous data signal with a clock waveform, a pulse of given duration is first produced from the data, a bi-stable circuit is set in response to the pulse and a synchronized output signal is produced in response to the coincidence of the output of the bi-stable circuit and the clock signal. As shown in Figs. 2, 4, the data input at 10 is fed via a logic level changing inverter 12 to a monostable arrangement comprising a delay line 14, an inverter 16 and AND gate comprising resistors 17 and tunnel diodes 19 so as to provide a pulse, the duration of which is equal to the transit time of the delay line 14. This pulse is used to set the bi-stable circuit 24. Clock signals at 26 are fed via a logic level translator 28 and an inverter 48 to an AND gate comprising resistors 25, 39 and tunnel diodes 29 so that bi-stable circuit 54 is set on the coincidence of input data at 10 and clock signal at 26. An AND gate 66 is fed with clock pulses from 28 and with the output of bi-stable circuit 54 so as to provide a single clock pulse following the receipt of a logic input at 10. This clock pulse is fed via a logic level translator 72 of the type described in Specification 1,031,359, to an output terminal. Bi-stable circuit 24 is cleared by coincidence of clock signals from 28 and the output of 54, whilst bistable circuit 54 is cleared by coincidence of inverted clock signals from 48 and the output of circuit 24. Pulse circuit details.-Tunnel diodes such as 11, 15 are connected between the collector and base of the NPN silicon transistors such as 12<SP>1</SP>, 16<SP>1</SP>. The tunnel diodes assume low voltage states on receipt of a reverse-driving, positivegoing input to the base of their associated transistor and become switched to high voltage (Forward biased) states when the collector current is reduced by a negative-going input. The inter-state transition is approximately 4ns. Level changing Zener diodes such as 13 are provided.
Patent GB-828418-A (GB)
Title: Improvements in or relating to clockwork springs
IPC: G04B1/14
Filed: 1958-07-17
Abstract: 828,418. Making springs; working at specified temperatures to alter physical structure. PHILIPS GLOEILAMPENFABRIEKEN N.V. July 17, 1958 [July 20, 1957], No. 22972/58. Classes 83 (2) and 83 (4). A method of making clockwork springs for miniature watches from a rolled strip of hardenable steel having a carbon content of at least 0.4% comprises heating the strip until it consists of at least 80% of austenite, cooling to the recrystallization temperature, the strip still consisting of 80% austenite, rapidly deforming the cooled strip to at least 80% reduction in a temperature range between the recrystallization temperature and 10‹ C. below the temperature at which the martensite formation begins but above 100‹ C., the deformed austenite being subsequently converted into bainite or martensite. During cooling the strip may be simultaneously deformed if desired. The rapid deformation prevents the austenite from changing into bainite or martensite during deformation of the strip. Specification 744,140 is referred to.
Patent GB-961828-A (GB)
Title: Cleaning device for water tanks
IPC: A01K63/10
Filed: 1963-06-10
Abstract: 961,828. Cleaning tanks. H. BENN, and A. DAWSON. June 10, 1963 [June 11, 1962], No. 23028/63. Heading A4F. A device for cleaning aquaria, swimming baths, and other tanks comprises a line 3 for feeding compressed air into the lower end of a tube 1 to form an air-water mixture which rises in the tube 1 to induce debris &c. through the inlet 2, and pass it through an opening 8 into a filter bag 6.