baber/WOPTO huggingface dataset:
Patent GB-642928-A (GB)
Title: Display device
IPC: G09F21/10
Filed: 1947-09-15
Abstract: 642,928. Installation wiring. KERWER, F. Sept. 15, 1947, No. 25211. [Class 38 (iv)] [Also in Groups XVIII and XXXVI] An electric conductor is shaped in the form of a symbol and has electric light sockets 11 disposed along its length. The conductor is adhesively fastened to a supporting surface by means 20 disposed between the sockets. As applied to a dirigible the sockets 11 and the conductors 12 are attached to the surface 13 of the dirigible by means of adhesive patches 20. Power to light lamp 10 carried by the sockets 11 may be supplied from the ground or carried by the dirigible. The lamps may be wired to a device to give an animated or flashing effect. In a modification the lamps may be affixed to separate rectangular sheets by their conductors, to outline painted symbols. The sheets are attached to the dirigible envelope by lacing connected to finger patches.
Patent GB-1325264-A (GB)
Title: Amplifier having a very high input impedance
IPC: H03F1/56
Filed: 1971-04-19
Abstract: 1325264 Amplifier circuits SCHLUMBERGER INSTRUMENTS ET SYSTEMES 19 April 1971 [20 March 1970] 25219/71 Heading H3T The invention relates to an arrangement comprising first and second inverting amplifiers A1, A2 respectively, connected in cascade, each having overall negative feedback by means of resistors R1, R2, and R3, R4 respectively: a resistor R5 provides overall positive feedback whereby the input impedance is greatly increased. The arrangement is stabilized for A.C. signals, according to the invention, by means of a capacitor C in the forward signal path. For D.C. signals the capacitor C is short-circuited by means of switch I, and a stabilizing circuit CS is periodically switched in by means of switches I<SP>1</SP>, 134, I33. Stabilizing circuit CS comprises a D.C. amplifier A3 which charges up capacitor C3 and is connected in a negative feedback path around the amplifiers A1, A2. During stabilizing periods the input signal Ve is disconntected by means of switch Ie and the input to capacitor C4 earthed by means of switch I4: the zero is set by means of a control RZ in amplifier A3. The switches may comprise field-effect transistors.
Patent GB-733565-A (GB)
Title: Improvements in or relating to centrifugal governors
IPC: H01H35/10
Filed: 1952-10-08
Abstract: 733,565. Speed governors. GENERAL ELECTRIC CO., Ltd., and CURTIS, T. J. Oct. 8, 1953 [Oct. 8,1952],no. 25233/52. Class 57. [Also in Group XXXVII] A centrifugal governor comprises a base 1 adapted to be coupled to a rotatable member and having a number of weights 5 which are arranged to pivot away from the axis of the governor under the influence of centrifugal force and are biased to their rest positions by spring means 11, two or, more of the weights being- linked together to move in synchronism. The base 1, which may be mounted on the shaft of an electric motor, is of moulded insulation material and consists of a hub 2 and a radial flange 3. The weights 5 are pivotally connected by pins 4 to one face of the flange and carry guide pins 10 which pass through apertures in the base 1 and engage slots 9 in a guide plate 7 rotatably mounted on the hub 2. These slots are inclined at an angle of about 30 degrees to the radial line of the governor so that the guide plate 7 is rotated against the action of the spring means 11 as the weights 5 fly outwardly. The means 11 may comprise one or more helical springs and the guide plate 7 may have an outer diameter which is only slightly less than that of the flange 3. Strikers 6 may be arranged to actuate an electric switch (see Group XXXVII). Specification 733,564, [Group XXXVII], is referred to. '
Patent GB-448413-A (GB)
Title: Folding cradle
IPC: A47D9/00
Filed: 1934-09-03
Abstract: 448,413. Folding cradles. MASSON, C. J. A., 101, Rue Reaumur, Paris. Sept. 3, 1934, No. 25323. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 2, 1935]. [Class 52 (ii)] A folding-cradle framework comprises two X- frames 1, 1 which are joined at the upper ends and at the pivoting point by members 4, 3 respectively. The extent of opening is limited by cords or chains 6. The body of the cradle is constituted by a fabric bag, the bottom of which is stiffened by a frame of metal or wood. The lower ends of the X-frame members are provided with castors 5.
Patent GB-705375-A (GB)
Title: Improvements in or relating to rotary liquid flow meters
Inventor: HARRISON JIM
IPC: G01F15/00
Filed: 1950-10-18
Abstract: 705,375. Counting apparatus. LEEDS METER CO., Ltd. Jan. 11, 1952 [Oct. 18, 1950], No. 25334/50. Class 106 (1). [Also in Group XXVI] A liquid meter, adapted to control other apparatus by completing an electric circuit after a predetermined quantity has passed through the meter, is provided with a train of interchangeable gears which can be altered to suit the desired registration. The circuit is completed by a pivoted arm 17, of a switch 19, after completion of a number of revolutions of the motordriven shaft 5, acting through a train of gears 6 to 13, the latter meshing with a gear 12. The gears on spindles 7a . . . 11a are arranged concentrically around the axis of the gear 12, the tops of the spindles being made square, or otherwise prepared, to receive a removable change pinion 13, which may be placed on any spindle and always mesh with gear 12. The spindle of the latter is supported in a bracket 14 and carries an actuating collar 15, with nose 15a which acts on a roller 16 carried in the contact arm 17. A micrometer screw 20 allows adjustment of the period during which the switch is held "on". Instead of the micrometer screw, a V-shaped plate 25, Fig. 5 (not shown), is adjusted vertically to vary the time of contact during which the switch is held on. The broader end of the plate gives a longer time of contact than the end near the apex. The meter may be used to operate an alarm to indicate that a water treatment plant requires re-generation; or to bring re-charging apparatus into action on a water-softener plant or similar plant.
Patent GB-758256-A (GB)
Title: Improvements relating to the manufacture of gas or vapour flow limiters and to fluidhandling apparatus incorporating such limiters
Inventor: BLEARS JACK
IPC: H01J49/04
Filed: 1953-09-14
Abstract: 758,256. Regulating volume of flow of fluids. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 7, 1954 [Sept. 14, 1953], No. 25334/53. Class 135. A gas handling apparatus has a flow limiter manufactured by forming a porous disc 1 of silicon carbide and china clay, grinding or cutting the disc to requisite cross-section and thickness and sealing it throughout its peripheral length in a tube 3. This tube is sealed to a surrounding tube 7, both tubes being of glass and protruding through a vacuum casing 13 into engagement with an ionisation chamber 4 of a mass spectrometer. Gas or vapour or vaporizable liquid passing through the tube 3 and disc 1 may be heated by an electric element 8 between the tubes. In another embodiment, two tubes 3 with discs 1 are mounted in a single tube 7 and used for mixing two gases and preventing feedback between the two gas supplies.
Patent GB-290095-A (GB)
Title: Improvement in venting mechanism for centrifugal pumps
IPC: F04D9/02
Filed: 1927-09-26
Abstract: 290,095. Jennings, I. C. Sept. 26, 1927. Casings. - A centrifugal pump normally operates under a positive head and has a venting device connected to the inlet side of its casing which acts to prevent air from accumulating in the casing and water from escaping. The device is shown applied to a pump 10 on a ship S. The inlet pipe 12 has two intakes 14, 16, with valves 15, 17; the lower intake 14 is used in deep water, and the higher intake 16 is used in shallow water. A closed air chamber 20 is fixed above the pump casing and is connected to it by a pipe 21. The end of a vent or outlet pipe 22 is opened or closed by a valve 23 operated by a float 24 in the chamber 20, and a bye-pass 26 connects the pump casing to the upper part of the chamber 20. Under normal conditions the float 24 is raised to close the valve 23. If air enters the intake 16 or the glands of the pump, it passes to the chamber 20 by the pipe 21 or the bye-pass 26 and depresses the water level until the float drops sufficiently to open the valve 23. This permits the air to escape and as the water level rises, the float again closes the valve to prevent water from escaping. A check valve 25 is placed in the vent pipe 22 to prevent air from passing inwards when the pump is under a negative head.
Patent GB-915627-A (GB)
Title: Improvements in and relating to heat exchangers
Inventor: CARR FREDERICK
IPC: F22B1/18
Filed: 1958-08-07
Abstract: 915,627. Heating steam boilers by hot gases; superheaters. HEAD WRIGHTSON CO. Ltd. July 22, 1959 [Aug. 7, 1958], No. 25385/58. Classes 123 (2) and 123 (3). A boiler generating steam at a high and a low pressure is heated by the coolant gas from a nuclear reactor which flows from an inlet duct 17 and header 18 through a large number of tubulous heat exchange elements to a header 19 and outlet duct 20 whence it returns to the reactor for reheating. The heat exchange elements are disposed one above the other to form vertical grids, several of which are arranged side-by-side to form the complete boiler, each element consisting of a series of aligned outer pipes 2 which enclose a number of parallel connected inner tubes 21 extending between headers 18, 19 and which may be straight or arranged helically to absorb differential expansion. The tubes 21 carry the hot gas whilst the working medium flows through the space between the outer and inner tubes. The bank of tube elements is divided into five main sections, namely, an L.P. and H.P. superheater section I, a H.P. evaporator II, a H.P. preheater section III, an L.P. evaporator IV, and an L.P. and H.P. preheater section V. Sections I, III and V are respectively divided into subsections Ia, Ib, IIIa, IIIb and Va, Vb. Water enters the L.P boiler through a header 3 and flows successively through the sub-sections Va, Vb of alternate grids, the outer tubes of the sub-sections being serially connected at alternate ends to give oppositely directed flow in vertically adjacent tubes. The sub-sections are connected by a tube 5. The heated water leaves the preheater via a header 6 and passes to an L.P. drum, not shown, whence it flows via a header 7 through the serially connected outer tubes of the L.P. evaporator IV. Steam-water mixture returns to the drum whence separated steam flows through the L.P. superheater constituted by alternate grids in the sub-sections Ia, Ib which are connected by a pipe 10 to an associated L.P. turbine. The H.P. superheater and preheater are constituted by the grids which alternate with the L.P. grids in the sections I, V, the flow of H.P. working medium being the same as that for the L.P. medium except that water circulates from the H.P. drum through the additional preheater III before passing to the H.P. evaporator II. Adjoining sections in each element are separated by a tube plate 22, Fig. 5, to which aligned outer tubes 2a, 2b are welded, the inner gas-carrying tubes 21 passing through the tube plate. Further to minimize thermal stresses in the grids the external connections to the various sections and sub-sections thereof are arranged so that fluid flow in adjoining aligned outer tubes 2 is in opposite directions, whilst the end connections between outer tubes of one section or sub-section are displaced one tube pitch from those of the adjoining section or sub-section.
Patent GB-171809-A (GB)
Title: Improved polarized relay for use in controlling rotary converters
IPC: H02P1/50
Filed: 1920-09-03
Abstract: 171,809. Metropolitan-Vickers Electrical Co., Ltd., (Westinghouse Electric & Manufacturing Co.). Sept. 3, 1920. Systems for conversion, employing rotary converters or rotary transformers.- A polarized relay for a rotary converter comprises a permanent field magnet 3. with pole-pieces 25 carrying a winding 5 connected to the direct-current circuit 23, and an armature 4 connected across the direct-current end of the converter 22. The armature is connected through speed-reduction gearing 6 to a rotatable contact-member 17. The converter is started automatically when the load on the direct-current circuit increases beyond a predetermined amount. When the converter is running in synchronism with the alternating-current circuit 24, direct current transverses the armature 4 and causes it to rotate in one or the other direction according to the polarity of the converter. If the converter has the correct polarity, the contact-member rotates over the fixed contacts 18, 19 to close the circuits of relays which close the switch 26 and connect the converter to the direct-current circuit 23. If the converter has incorrect polarity, the contact-member rotates in the opposite direction over fixed contacts 21, 20, and closes the circuits of relays which reverse the field winding of the converter.
Patent GB-206307-A (GB)
Title: Improvements relating to the correction of type in printers' galleys
IPC: B41B1/28
Filed: 1922-09-21
Abstract: 206,307. Burden, T. Sept. 21, 1922. Correcting composed matter in galleys.-A device for facilitating the correction of type in printers' galleys after a proof has been taken comprises means for printing on the proof sheet a vertical row of index marks or characters, such as numerals, and a type-line locator in the form of a row of corresponding characters, which lies alongside the type in the galley, so that a line of type requiring correction may be readily located. The printing characters A, Fig. 1, and the locating characters G are arranged alongside the type lines B in the galley C, and may be placed on a bar D which forms one side of the galley. The printing characters are of type height, and the locating characters, which are reversed with respect to them, are at a lower level. The characters may be formed upon a separate L-shaped member J, Fig. 6, or upon opposite or adjacent faces of a bar D, Figs. 8 and 9, which may be placed in the galley or alongside the type. The galley may be formed with a compartment to receive the bar.
Patent GB-1483975-A (GB)
Title: Position measurement system
IPC: G01D5/245
Filed: 1975-06-16
Abstract: 1483975 Measuring position digitally; digitalto-analogue conversion INDUCTOSYN CORP 16 June 1975 [17 June 1974] 25565/75 Heading H3H In a digital position measurement system of the type shown in Fig. 1 comprising a transducer 10 having relatively displaceable members 10a, 106, sine and cosine windings on member 10a being fed with complementary pulsewidth-modulated signals to null an error signal picked up in a winding on member 10b, the pulse-width-modulation signals are derived by algebraically accumulating tracking error pulses in reversible counters 42, 66, Fig. 2, and loading counters 36, 62, which are continuously incremented by clock pulses from source 38, with the contents of counters 42, 66 respectively whenever a predetermined number of least significant stages in counters 36, 62 overflow, overflow of the most significant stages of counters 36, 62 producing time-displaced signals on lines 46, 64 which are combined in logic 120 to derive the sine and cosine pulse-width-modulated signals. A sealing factor introduced by counter 194 for determining the relative frequencies of the clock pulses from source 38 and the tracking error pulses, can be adjusted for metric or imperial units. Details of many of the circuits are given.
Patent GB-1154985-A (GB)
Title: Improvements in or relating to Industrial Pallet or Stillage Trucks
Inventor: GOODACRE CECIL
IPC: B60T7/04
Filed: 1967-06-02
Abstract: 1,154,985. Controlling industrial trucks. LANSING BAGNALL Ltd. 28 May, 1968 [2 June, 1967], No. 25661/67. Heading B7H. [Also in Division B8] In a pallet or stillage truck, a pedal 13 for operating a dead-man brake mechanism 35 is mounted on an operator's platform 43 on the root portion 39 of the fork structure and is connected by a linkage to the brake mechanism so as to be operative of any position of the fork structure. The linkage between the wheels at the outer ends of the forks 38 and the body portion 10 includes levers 12 pivoted between the body portion and the root portion. The pedal 13 is secured to a lever 24 secured to a spindle 20 which is rotatable in a bearing 22 and which is connected to a second spindle rotatable in a bearing 23 on the body portion by a lever 14 which is pivotable about an axis 17 on an arm 15 secured to the lever 12 and which is connected to arms 18, 19 secured to the spindles. An arm 25 on the second spindle is pivoted to the brake control link 26. A similar linkage may be provided to connect an accelerator pedal to the electric drive motor.
Patent GB-608613-A (GB)
Title: Improvements in or relating to valves, cocks, faucets, and the like
IPC: F16K1/50
Filed: 1945-10-03
Abstract: 608,613. Valve spindles. KUGLER FONDERIE ET ROBINETTERIE SOC. ANON. Oct. 3, 1945, No. 25693. Convention date, Oct. 11, 1944. [Class 135] [Also in Group XXVI] In a valve, e.g. a domestic water tap, in which the closure member 3, actuated by a non-reciprocating screwed spindle 7, has a non- circular outer section slidably engaging the correspondingly shaped inner section of a threaded sleeve 9 forming the connecting-union between the valve cap 11 and the body 1, a shoulder 16 on the closure member is adapted in the fully open position of the valve to abut against the lower end of the sleeve 9, so that providing the cap 11 is prevented from rotating, rotation of the spindle 7 in the valve opening direction imparts axial movement to the sleeve and increases the pressure on the spindle packing 14.
Patent GB-822594-A (GB)
Title: Improvements in or relating to cover-heated tank furnaces
IPC: C23C2/00
Filed: 1957-08-16
Abstract: 822,594. Galvanizing tank furnaces. FRITZ, C. Aug. 16, 1957 [April 26, 1957], No. 25905/57. Class 51 (2). [Also in Group II] A cover-heated galvanizing tank furnace has the cover 5 formed with a stepped shoulder 7 above the lower edges 6, opposite shoulders resting on the walls of the refractory lined tank 1. Material to be treated is fed into or removed from the open spaces 4 and 8. In a modification, Fig. 2 (not shown), the tank bottom is formed as a centrally disposed ridge with sloping sides, or, alternatively, it may be domed. Specification 783,683 is referred to.
Patent GB-1282980-A (GB)
Title: Improvements in and relating to semi-conductor device control arrangements
IPC: H02M7/17
Filed: 1970-05-29
Abstract: 1282980 Semi-conductor control circuits COMPAGNIE GENERALE D'ELECTRICITE 29 May 1970 [29 May 1969 27 June 1969] 25905/70 Heading H2F [Also in Division H3] A circuit for controlling the operation of semiconductor devices such as thyristors Th 1 , Th 2 , &c. comprises a generator G for providing control signals at a predetermined frequency to a control circuit tuned to the predetermined frequency, the control circuit supplying the signals simultaneously to all the semi-conductor devices connected to that part of the control circuit tuned to the predetermined frequency. Assemblies S 1  ... S n  of thyristors are connected between supply terminals A, B, the gates of all the thyristors in a particular assembly being connected to a respective control module D 1  ... D n . Each control module includes rectifier circuits d 1  ... d m  connected to the secondary windings of control transformers Tc 1  ... Tc m . The primary windings of the sets of control transformers in each module are constituted by a respective insulated cable Cb 1  ... Cb n  which passes through the toroidal ferrite cores of the control transformers. The generator G, which is connected to an A.C. supply via an isolating transformer Tf, comprises a high frequency quartz controlled or R.C. oscillator and is connected to a control source S.C. by an electro magnetic device. The generator G provides high frequency control signals to each of a series of cascaded transformers T 1  ... T n  for a period defined by successive pulses produced by a flash lamp or electroluminescent cell in the source SC. A capacitance Cs 1  ... Cs n  is connected to each cable and is chosen so that the circuit it forms with the two transformer windings # 1 , α 2  and the respective cable is resonant at the generator frequency. Similarly each secondary winding of each control transformer Tc 1  ... Tc m  is shunted by a capacitor chosen so that the parallel circuit formed is tuned to the generator frequency. A number of modifications are described including circuits for simultaneously firing parallel arrangements of thyristors or transistors for controlling the supply of power to a load. An inverter, Fig. 8 (not shown), is also described.
Patent GB-466459-A (GB)
Title: Method of producing lighting effects for scenic advertising and display purposes
IPC: G09F19/00
Filed: 1936-09-25
Abstract: 466,459. Producing lighting effects. HEIN, P. Sept. 25, 1936, No. 26050. [Class 132 (i)] [Also in Group XVIII] A method of producing colour effects for theatrical, advertising and display purposes, comprises illuminating moving objects by light the colour of which before reaching the eye is caused to alternate periodically between various colours at such a high frequency, that the light appears to the eye to be of a uniformly blended colour, white for example, the moving objects being provided with lightabsorbing and with light-reflecting parts, and being moved with such periodicity, that they assume, owing to periodic interference intense colours in lasting stationary or slowly moving designs. The alternation in colour of the light may be effected by inserting moved multi-coloured colour filters between the objects and the light source or sources, or between the objects and the eye. The objects may coinprise moved ribbons or films or rotating discs, cylinders, cones, spheres, &c., for example, in the form of sunshades, or wheels to be rolled, divided into white and black sectors or similar periodic designs, Spiral divisions may be used to give apparent centripetal or centrifugal effects, and the coloured designs may be made to appear substantially transparenb by using perforated moving objects such as windmill sails. The composition of the light may vary, and the light pass from one composition to another without this change being visible in the lighting. The periodicity of the change of the lighting may be varied. The lighting in the various parts of the field need not be composed in the same manner, and in the case of several sources of light, the light filters may be synchronized in various ways.
Patent GB-771296-A (GB)
Title: Improvements in and relating to three-legged laminated magnetic cores
IPC: H01F27/245
Filed: 1955-09-12
Abstract: 771,296. Transformers. GENERAL ELECTRIC CO. Sept. 12, 1955 [Sept. 16 1954], No. 26064/55. Class 38 (2). In a three-legged magnetic core of the type having leg and yoke members each comprised of two parallel spaced laminations the insert members between the yoke members and the centre leg member are each comprised of two lamination pieces 10, 11 or 12, 13 each pair of pieces being of equal lengths but of unequal widths abutting at their lengthwise edges. In alternate layers the inert members in corresponding positions are similar but are reversed whilst those in adjacent layers are of different overall dimensions. Thus in the joint areas the abutting edges do not coincide. The laminations of all the members are constructed from grain oriented strip, the grain directions in the insert members in adjacent layers being at right angles to one another.