baber/WOPTO huggingface dataset:
Patent GB-1432212-A (GB)
Title: Transformers
IPC: H01F38/30
Filed: 1973-08-29
Abstract: 1432212 Transformers ALLMANNA SVENSKA ELEKTRISKA AB 29 Aug 1973 [30 Aug 1972] 40668/73 Heading HIT At least one of the windings of a transformer, supported on at least one magnetic core 9, is enclosed in a sealed case comprising at least two hollow parts 1, 2 of insulative material having their surfaces coated with electrically conductive layers, the parts being joined after assmbly to form a closed container. Preferably the electrically conductive layers are applied by a metallizing process directly to the surfaces of casing parts made of cast plastics, being excluded from the mating edge surfaces of the parts.  In a current transformer Fig. 2, a secondary 11 wound on annular cores 9 is enclosed in a case in the form of a hollow annulus having a pipe 13 to carry the secondary terminal conductors 12. A primary winding 15 may be wound around the casing through the central channel 6 and provided with terminals 16; or the primary may simply comprise a single conductor passing through the channel 6. The transformer may be enclosed in conductive or insulative protective cover 18 mounted on a hollow insulator 17. The conductive layer lining the annular cavity 8 is kept at substantially the secondary winding potential, and the layer on the outer surface of the case is kept at the primary potential. An isolating voltage transformer may be similarly constructed.
Patent GB-1278637-A (GB)
Title: Synchronized vortac/tacan cas system
IPC: G01S11/08
Filed: 1969-08-15
Abstract: 1278637 Radionavigation SIERRA RESEARCH CORP 15 Aug 1969 [20 Aug 1968] 40944/69 Heading H4D In a co-operative co-altitude aircraft collision avoidance system (CAS) as in Specification 1,278,636 the VOR/DME, TACAN or VORTAC ground stations A, B, C, D are synchronized directly by a master clock 3 to transmit CAS sync signals which may or may not be synchronized with the rotating aerial pattern of the corresponding ground station. At an airborne station the distance R of said station from a ground station D as determined by a DME unit 5 is converted to digital form by an A/D converter 14 and applied through a gate unit 16 to set the slot counter 18 to a number corresponding to the one-way propagation time for the distance R, the gate unit 16 being enabled by a CAS sync signal received from the ground station D so that the next local sync signal produced by the counter 18 occurs when the next CAS sync signal is transmitted from the ground station D; the counter 18 is then in absolute synchronism with the master clock 3.
Patent GB-929568-A (GB)
Title: A control circuit for an electrically driven machine
IPC: H02H3/16
Filed: 1959-12-04
Abstract: 929,568. Protective cut-out arrangements. L. SCHULER A.G. Dec. 4, 1959 [Dec. 31, 1958], No. 41236/59. Class 38 (5). A protective arrangement for the control circuit of a machine comprises a relay having its operating coil ES connected between the machine frame 9 and one of the circuit conductors 2 so that a fault to the machine frame on the other conductor 1 causes the energizing of the relay which opens contacts esl in the control circuit to cause the interruption of the supply to the machine, opens contacts es2 to remove the frame connection from the relay and closes contacts es3 to complete a holding circuit for the relay and to light a lamp 10. A main switch 5 may be opened to cause the relay to restore. To protect both conductors from faults the arrangement may be duplicated.
Patent GB-1058715-A (GB)
Title: Improvements in or relating to slide projectors
IPC: G03B23/04
Filed: 1963-10-18
Abstract: 1,058,715. Slide changing apparatus. C. BRAUN and W. BRAUN. Oct. 18, 1963 [Oct. 18, 1962], No.41321/63. Heading G2J. In a slide projector with a drive motor 2 for moving a slide to and from a magazine, a slide mover 13 is displaced from its rest position shown by a coupling with the motor drive transmission, the coupling comprising a two-armed lever 14 which is automatically disconnected from the slide mover 13 in the above position to permit its manual operation. Lever 14 is pivoted to a carriage 11 which reciprocates on rails 12 when driven by crank arm 10 which is eccentrically pivoted on motor-driven disc 8. Hook-shaped lever arm 14' is spring biased clockwise to drivingly engage projection 18 of slide mover 13 until carriage 11 returns to the position shown when lever arm 14" engages stop 19 and lever 14 is pivoted anti-clockwise to disengage the slide mover. The drive transmission is described in Specification 1, 58, 716.
Patent GB-1099918-A (GB)
Title: Laminating-embossing roller system with adjustable deflection of strip
IPC: B29C59/04
Filed: 1966-09-16
Abstract: 1,099,918. Laminating apparatus. PRE FINISH METALS Inc. Sept. 16, 1966 [Sept. 20, 1965], No. 41400/66. Heading B5N. [Also in Divisions B6 and D1] Apparatus for laminating a film of plastic metal strip comprises a frame supporting two idler rollers 34, Figs. 1 and 3, over which the strips 35, 36 are guided, and a co-operating pair of rollers comprising a treatment roller 25 and a supporting roller 24 mounted on a carriage 19 which is vertically adjustable so as to vary the degree of deviation of the strip from its normal path over the rollers 34 from zero, with line contact with the roller 25, Fig. 3, to a maximum wherein the strip contacts nearly half of the roller periphery, Fig. 1.
Patent GB-978529-A (GB)
Title: Method of making a mold for copying fabric, lace, matting, and similar materials
IPC: B29C33/38
Filed: 1963-10-21
Abstract: 978,529. Making moulds for reproducing fabrics. N. FORREST. Oct. 21, 1963, No. 41421/63. Heading B5A.  A silicone rubber mould for making a synthetic resin article having, e.g. a lace, brocaded silk, velvet, corduroy, suede, linen, wool or synthetic fibre finish is made by making the fabric impervious with e.g. cellulose acetate or nitrocellulose positioning it on a table 22 by applying vacuum through holes 24, coating it with a separator, e.g. paraffin, and then spraying silicone rubber on to the fabric. A thick coating of silicone rubber and a reinforcing layer of glass cloth is then applied.
Patent GB-414279-A (GB)
Abstract: 414,279. Ticket printing machines. TOTALISATORS, Ltd., Thames House, Queen Street Place, London.-(Automatic Totalisators, Ltd.; 58, Margaret Street, Sydney, Australia.) Dec. 12, 1933, No. 34928. [Class 106 (iii).] Ticket printing and issuing machines for use with totalisators are provided with an auxiliary registration device comprising a record strip on which particulars are printed by a serial numbering apparatus and type printing wheels corresponding with those on the main ticket printing apparatus. A competitor printing wheel 58 and a class marking sector 51 are mounted on a shaft 49 so as to move with the corresponding record printing wheels 10, 14 respectively, these wheels being arranged alongside a counter 16 worked simultaneously with the main counter, not shown. The record strip 20 is wound on the spool 22 by steps by means of ratchet mechanism including a pawl 23 carried by the rocking lever 25 which is oscillated by link 26 from a three armed lever 29, 27, 68 connected by link 69 to the main operating mechanism 53. The record printing is effected by the platen 30 on the arm 29. The inking ribbon 17 is also fed forward on to the spool 61 by an oscillating lever 62, ratchet mechanism and a reduction gear.
Patent GB-1077677-A (GB)
Title: Combined electric switch and overload mechanism
IPC: H01H5/28
Filed: 1964-10-12
Abstract: 1,077,677. Variable resistors. P. R. MALLORY & CO. Inc. Oct. 12, 1964 [Oct. 23, 1963], No. 41521/64. Heading H1S. [Also in Division H2] A switch combined with a thermal cut-out (see Division H2) may be mounted with a rotary variable resistor (Fig. 6, not shown), for operation by axial movement of the resistor shaft.
Patent GB-1055590-A (GB)
Title: Improvements in or relating to photographic medium and methods of preparing same
Inventor: E LUVALLE JAMES
IPC: G03C8/04
Filed: 1963-10-22
Abstract: The photographic medium disclosed in the parent Specification formed by the vacuum evaporation of one or more of AgCl, AgBr and AgI and condensation of the vapours as a binder free layer of silver halide microcrystals not greater than 3.5 microns in thickness on a solid substrate such as glass, cellulose derivatives, polymers and polyesters or on a bonding substratum such as gelatin a lacquer or a tacky adhesive coated on the solid substrate or on a glass base coated on the solid substrate or on a glass base coated with silicon monoxide, is improved by applying to the silver halide coating a liquid pervious coating such as gelatin which is adapted to retain developed image silver in the binder free layer.  The photographic medium may also be sensitized by the addition of a photographic sensitizer which may be combined with the crystals of the silver halide.
Patent GB-1165136-A (GB)
Title: Reaction Tester
Inventor: BOWDEN ALEXANDER MASTERTON
IPC: A61B5/18
Filed: 1966-03-30
Abstract: 1,165,136. Reaction testing devices. A. M. BOWDEN. 6 March, 1967 [30 March, 1966; 21 Sept., 1966], Nos. 14084/66 and 42147/66. Heading A5K. A reaction testing device comprises at least one indicator 2 for providing a succession of sensible signals at predetermined intervals of time adda control circuit associated with the indicator or indicators, the control circuit comprising elements which determine the tim-' ing of the signals, and a first switching device A which can be closed to initiate the succession of signals, and a second switching device B which can be opened so as to interrupt the succession of signals. As shown, the device comprises an electrical circuit including the switch A to be closed by an operator to start the device, a pulse generator with transistors 4, 5 arranged to cause a lamp 2 to flash at a predetermined rate to provide the signals, and the switch B to be opened by the patient to prevent the signals. The circuit also includes an amplifying transistor 3. In use, the operator closes the switch A, which causes a lamp 1 to illuminate and, after the predetermined interval, the lamp 2 to flash. The patient closes the switch B on the illumination of the lamp 1 and his reaction time is measured by the number of flashes, if any, made by the lamp 2. In an alternative embodiment (Figure 2 of the drawings accompanying the second Provisional Specification, not shown), when the device is switched on, lamps (6, 7, 8) illuminate one after the other at a predetermined rate and the patient, on seeing the first lamp (6) illuminate, switches off the apparatus using a second switch (5). The patient's reaction time is measured by the number of 'lamps (7, 8) which he,-has allowed to light up. The lamps may show different colours. Either embodiment may be provided in a casing having handgrips on which are the actuating switches and the device may be arranged to cause the immobilization of a motor vehicle if the patient's reaction time is excessive. It is stated that the device may use other than visual signals, e.g. mechanical or utilizing heat, sound, electricity, or magnetism.
Patent GB-1405385-A (GB)
Title: Hydraulic cylinder assembly
IPC: F15B21/08
Filed: 1973-09-10
Abstract: 1405385 Telescopic jib cranes HARNISCHFEGER CORP 10 Sept 1973 [18 Sept 1972] 42409/73 Heading B8B [Also in Division F1] A piston and cylinder assembly for use in a telescopic boom to move one boom section relative to an adjacent boom section comprises a piston 53 dividing a cylinder 50 into an expansion chamber 58 and a retraction chamber 55, a piston-rod 52 having passages 59, 60 and 61 connected, respectively, to the retraction and expansion chambers 55, 58, a remotely controlled valve 67 in the rod 52 for controlling fluid flow to and exhaust from the chambers 55, 58, and trunnions 68, 70 for connection to the boom sections. A holding valve 72 prevents undesired retraction until it is released in response to retract operation of the main control valve 67. The valve 67 is an electrically operated fourway spool valve, Fig. 10 (not shown). Displacement of the spool is dependent on the electrical signal supplied thereto, the signal being used in a known manner to displace a flapper (87) controlling the differential pressure acting on the ends of the spool. Consequential movement of the spool acts via a feedback wire (91) to cancel out the flapper movement and thus bring the spool to rest in its required position. The boom section and its cylinder and valve arrangements are described and claimed in Specifications 1,405,386 and 1,405,387.
Patent GB-1120300-A (GB)
Title: Motion detector
IPC: G01P13/00
Filed: 1966-09-23
Abstract: 1,120,300. Measuring the velocity of a continuous body. INTERNATIONAL STANDARD ELECTRIC CORP. Sept. 23, 1966 [Sept. 30, 1965], No. 42494/ 66. Heading G1A. In a detector for indicating when the velocity of a continuous body such as a wire or belt exceeds a certain minimum, a shutter actuated by the motion permits illumination periodically by a source, of each photo-resistor of a group but ensures that at least one of the group is screened at any time, and an electric circuit is provided which includes each of the photo-resistors as an impedance element or as part of an impedance element requiring time to recover to a high impedance state from a low impedance state, an excessive velocity signal being generated when, and only when, simultaneously each of at least two of the impedance elements whose photoresistors are not simultaneously illuminated is in a low impedance state consequent to the illumination of its corresponding photo-resistor. The shutter may be rotated or reciprocated by a takeoff from the running element and may comprise a holed rotating cylinder, a cut away disc or a disc having a major opaque sector or major reflecting sector. Circuits in which the photo-resistors are connected in a battery supply to a relay are described, and include arrangements in which a capacitor is connected across each photo-resistor to determine its recovery time.
Patent GB-1041707-A (GB)
Title: Improvements in and relating to circuits for generating pulses of constant waveform
IPC: H03K3/30
Filed: 1964-10-19
Abstract: 1,041,707. Transistor circuits; circuits employing bi-stable magnetic elements. VYZKUMNY USTOV MATEMATICKYCH STROJU. Oct. 19, 1964 [Oct. 22, 1963], No. 42518/64. Headings H3B and H3T. A pulse amplifier comprises a magnetic core 40 having a linear BH characteristic, inductively coupled to a square loop core 30 and arranged so that following the termination of current in windings 32, 42, the energy in 40 is used to reset 30 and turn on transistor 50. The current in windings 32, 42 may be derived from a multivibrator 1 and an inverter 2. The transistor 50 may have regenerative feedback via windings 35, 36 so that a pulse of given duration is generated in a load 54.
Patent GB-1328831-A (GB)
Title: Switching circuit for switching through atlernating measuring voltages in a measuring arrangement
IPC: H03K17/725
Filed: 1970-09-04
Abstract: 1328831 Bi-directional thyristor circuits HARTMANN & BRALIN AG 4 Sept 1970 [13 Sept 1969] 42525/70 Heading H3T [Also in Divisions H2 and G1] In a measuring arrangement, a switching circuit for switching through alternating measuring voltages has a bi-directional thyristor WTh (Fig. 1) connected by its main electrodes through a load RA to an AC measuring voltage source U and a continuous DC signal is applied as a control quantity to the control electrode of the thyristor. By applying a continuous DC control signal the thyristor WTh is switch conducting for both half-waves of alternating voltages of a few mV upwards. A direct current i F  in the from of a leakage current is superimposed on the alternating current and this produces an additional voltage drop across the load RA which is undesirable for small applied alternating voltages U such as mV. The load resistor RA may be isolated from the leakage current by a transformer. By connecting two similar bi-directional thyristors in series opposition (Fig. 2, not shown) the leakage currents cancel. Two bi-directional thyristors may be connected in series opposition between a phase line (U, Fig. 3, not shown) and a centre point conductor (Mp) via primaries (W1, W2) of a transformer (œ). In a modification of this, Fig. 4 shows a selection circuit for high speed protective devices measuring the distance of a break down. To determine the voltages in a three phase main U, V, W, Mp selection logic signals Us, Vs, Ws, U<SP>1</SP>s, V<SP>1</SP>s and Mp<SP>1</SP>s are applied if a fault occurs to selected bi-directional thyristors 1-6. If the voltage between U and V is to be measured via load resistor RA1 the selection logic inputs Us and V<SP>1</SP>s occur which allow the bi-directional thyristors 1 and 5 to conduct. For determining the current, current transformers 24-27 are provided for the phases R, S, T and centre point conductor Mp. By applying control signals of the selected logic to r s , s s , t s , r<SP>1</SP> s , s<SP>1</SP> s  and mp s  the currents can be determined from load resistor RA2 as switched by bi-directional thyristors 11-16. In event of faulty control of the thyristors by the selection logic the division of the primary windings of the two transformers œ, œ2 prevents a short circuit from occuring. In a further embodiment (Fig. 5, not shown) with a control voltage applied at (Us) and a high frequency carrier source (U#) two bidirectional thyristors (WTh 5 , WTh 6 ) conduct. This enables a source of low frequency measuring voltage (U#) to be switched through the thyristor (WTh 5 ) to a load RA. A voltage drop in a potentiometer (P) counters the voltage drop of the carrier current (ix) in the thyristor (WTh 5 ).
Patent GB-1413915-A (GB)
Title: Deflection apparatus
IPC: H03K6/00
Filed: 1973-09-10
Abstract: 1413915 Television; sawtooth and stepwave generators MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Sept 1973 [14 Sept 1972] 42544/73 Headings H4F and H3P A sawtooth wave deflection current of the type shown at (f) in Fig. 14 is produced by generating output pulse trains (c) and (d) using monostable multivibrators 403 and 404, Fig. 13, triggered respectively by the rising and falling portions of the output (b) from a flip-flop 402 which is triggered by a sync. signal pulse train (a), the relative levels of these pulse trains (c) and (d) being adjusted 408 before they are added together 405 to produce pulse train (e) which is fed via a low impedance circuit 406 to a deflection coil 407. One application of the invention described comprises scanning a storage tube which has line sequential X and Z chrominance signals of a still picture recorded on its left and right-hand sides, Fig. 10A, so that the resulting still image may be displayed as a picture B, Fig. 9, occupying a quarter of the total display area, a horizontal deflection readout current as shown in Fig. 10B being required. Another application could comprise scanning the storage tube of Fig. 10A with a vertical sawtooth wave deflection read-out current similarly produced from four different amplitude phase displaced pulse trains generated in response to vertical sync. pulses in order that the line scans of each field scan are equally spaced from the adjacent line scans of successive fields, i.e. complete interlaced scanning, the horizontal deflection frequency being one half the conventional horizontal deflection frequency.
Patent GB-1114450-A (GB)
Title: Improvements in and relating to automatic dosing devices
Inventor: STEVENSON DONALD GEORGE
IPC: G01N1/00
Filed: 1965-10-07
Abstract: 1,114,450. Selective signalling. BRITISH HYDROCARBON CHEMICALS Ltd. 5 Jan., 1967 [7 Oct., 1965], No. 42641/65. Heading G4H. In a system for determining pore size distribution in a solid sample, a preset quantity of gas is introduced into the system and its pressure is measured and stored at preset intervals, until two successive measurements are identical, whereupon a fresh dose of gas is introduced and a print-out of the equilibrium pressure is made. A motor-driven timer may be used to control the necessary, switching sequences, e.g. actuation of valves. The pressure transducer may be of the vibrating cylinder type.
Patent GB-1365409-A (GB)
Title: Galvanic battery having heat fusible venting means
IPC: H01M2/12
Filed: 1972-09-14
Abstract: 1365409 Electric cells E I DU PONT DE NEMOURS & CO 14 Sept 1972 [14 Sept 1971] 42688/72 Heading H1B An electric cell comprises a sealed casing 1 and cap 2 including venting means 4 consisting of plugs of metal which melts at a preselected temperature below that at which the cell would rupture due to heat and pressure. The venting means is particularly applicable to high energy density cells having highly chemically active components which cells are subject to high temperature generation, e.g. when shortcircuited. The plugs may be of alloys selected to melt at 60‹ to 100‹ C. below the critical temperature. In an example the cell has a cathode formed by pressing Cu and S on to a nickel grid and heating to form Cu 2 S. A composite roll is formed from the cathode strip, polypropylene tape, a pressed lithium layer and a second tape layer and placed in the casing 1 with an electrolyte comprising tetrahydrofuran, ethylene glycol dimethyl ether and lithium perchlorate. Other electrolyte solvents specified include ammonia, sulphur dioxide, aliphatic amines, cyclic ethers and esters, acetonitrile, dimethylformamide and nitromethane. Solutes may be those of formula MM<SP>1</SP>F 6 , MSCN and MClO 4 , where M is Li, Na or K and M<SP>1</SP> is P, As or Sb. Cathode depolarizers specified are oxides, halides, nitrates and sulphides of Fe, Cu, Ni, Ag, Co and Cr.
Patent GB-888854-A (GB)
Title: Door closers
IPC: E05F3/10
Filed: 1959-12-16
Abstract: 888,854. Door operating appliances. PARKES & SONS Ltd., JOSIAH, MAITLAND, D. S., and TREDWELL, G. L. Nov. 25, 1960 [Dec. 16, 1959], No. 42716/59. Class 65(1). A door closer comprises a piston 11 in an hydraulic cylinder 10, moving on opening a door against the action of the spring 12 and the working fluid being displaced through the non-return valve 16; on release of the door, spring 12 tends to reverse the motion of the piston 11 and cause the door to close, the working fluid returning to the other side of the piston by at least one restriction valve 17 and an associated flow tube 29, the restriction valve or valves and associated flow tube being located in a valve chest 19 which is detachably mounted on the cylinder. The restriction valve 17 controls the speed of flow of fluid through the passages 27, 24, 28 and operates throughout the movement of the piston. A second valve 18 which operates over the last part of the closing movement to increase the speed and ensure closure -or latching of the door is brought into action by the piston moving the spring loaded hollow plunger 30 so that the external annular recess 33 with ports 34 is aligned with the valve 18 through which the fluid flows to the chamber 24 and through the return tube 29. The safety valve 37 allows the door to be forcibly closed without subjecting the closer to unduly high pressures. The door is connected to the spindle 15 by a suitable link mechanism. If, the device is to be used for a door opening in the opposite direction the valve chest 19 and stop 20 may be interchanged and the piston 11 and spring 12 reversed; alternatively the device may be inverted, the bearings 15x 15y and the spindle .15 reversed and the valve chest rotated through 180 degrees; in a modification the valves 17, 18 are adjusted from the end instead of the side and the spindle 15 is symmetrical with a cap covering the end not in use.