baber/WOPTO huggingface dataset:
Patent GB-1170666-A (GB)
Title: Cardiac Pacemaker
Inventor: DONATO LUIGI
IPC: A61N1/365
Filed: 1967-06-12
Abstract: 1,170,666. Cardiac pacemakers. CONSIGLIO NAZIONALE DELLE RICERCHE. 12 June, 1967 [13 June, 1966], No. 26967/67. Heading A5R. [Also in Division H3] A cardiac pacemaker which may be suitable for implantation, is able to provide regular stimulation pulses or, if natural heart signals are available, to synchronize its pulses to the heart signals, and comprises a device A to amplify and shape any natural heart signals, and a multivibrator M to provide the stimulation pulses which may be synchronized to the natural heart signals, there being a battery for energizing the multivibrator and the device, the output of the multivibrator and the input of the device A being connected together, and the multivibrator being arranged to deliver its output pulse signals in synchronism with any natural heart signals only as long as the repetition rate of the latter is not below a predetermined limit. As shown, the device A includes transistors T 1 , T 2 , T 3  arranged to amplify any heart signal received from an electrode at terminals a, c and a transistor T 4  which conducts only when the natural heart signal varies above a certain rate (0.15V/sec.) and provides positive feedback to the transmitter T 3  to ensure that the heart signal is of the correct amplitude and duration for synchronizing the multivibrator. The multivibrator comprises transistors T 5 , T 6 , and a transistor T 7  which uncouples the load from the multivibrator circuit. The multivibrator, in the absence of suitable natural heart signals, supplies pulses to terminals b, c (a and b being connected together) at a standard frequency (e.g. 1.2 c.p.s.) determined by the resistor R 15  and capacitor C 7  or, when in synchronism with suitable natural heart signals, the synchronizing signal from the device A is added to that from the multivibrator. A voltage divider R 14 , R 18  and R 21  prevents the pacemaker providing synchronized signals at a frequency exceeding 2.2 times the standard frequency of the multivibrator and ensures that the pacemaker then provides signals at a frequency which is a sub-multiple of the multivibrator's standard frequency. The resistor R 23  may be adjusted in value so as to adjust the output pulse signal intensity.
Patent GB-519188-A (GB)
Title: Improvements in or relating to screening caps for sparking plugs
IPC: H01T13/05
Filed: 1938-09-16
Abstract: 519,188. Couplings. BOSCH GES., R., (formerly BOSCH AKT.-GES., R.). Sept. 16, 1938, No. 27036. Convention date, Sept. 20, 1937. [Class 38 (i)] A screening cap for a sparking plug connector consisting of a metal cap a with a ceramic liner b is provided at its seating end with a resilient or soft metal packing ring g to make contact with the plug casing and to complete the screening.' The ring may consist of a copper shell g, Fig. 1, filled with asbestos f and set in an annular groove e in a ring c that covers the end of the liner b and has an extension d fitting round and soldered to the cap a. Alternatively the copperasbestos ring f, g may itself cover the end of the liner b and is then formed with an extension h, Fig. 3, that may be secured to a resilient ring k that engages over a ring m fixed to the cap a. The ring k may be dispensed with and the extension h is then either flanged over the ring m, or fits inside the ring m both being soldered to the cap a. Specification 487,463 is referred to.
Patent GB-931864-A (GB)
Title: Improvements in or relating to electronic limiter circuits
IPC: H03G11/02
Filed: 1959-08-07
Abstract: 931,864. Electric analogue computers. GENERAL PRECISION Inc. Aug. 7, 1959 [Aug. 15, 1958], No. 27104/59. Class 37. [Also in Group XL (c)] In a limiter circuit of the type in which the signal is applied to the bases of oppositely conductivity type transistors T-1, T-2 having a common emitter output terminal Vo and in which limiting is effected at the potentials of the collector electrodes, a feedback impedance is connected between output and input. This impedance may be a resistance (as shown) or a capacitive or mixed impedance so as to cause the circuit to integrate or provide another function. The circuit shown is a two quadrant multiplier in which one input signal Vx is applied to the input terminals together with a triangular voltage from a generator 20, while the other signal is supplied as oppositely varying voltages Vy to the collector electrodes to determine the limiting level.
Patent GB-770396-A (GB)
Title: Fluid filter elements
Inventor: VOKES CECIL GORDON
IPC: B01D39/14
Filed: 1952-10-29
Abstract: 770,396. Laminated materials; paper coated with adhesive and fibres. VOKES, Ltd. Oct. 23, 1953 [Oct. 29, 1952], No. 27231/52. Class 140. A filter for fluids is produced by deeply pleating a laminated sheet comprising a sheet of paper impregnated with a synthetic resin but leaving the pores open for passage of filtrate adhered by means of a pervious adhesive which does not form a fluid-tight skin to a layer of felted material. The felted material which may be hair or mineral, vegetable or synthetic fibres, e.g. asbestos, glass, cotton, kapok, cellulose compounds, may be applied either as a finished lap or by spraying the hair or fibre on to the adhesively-coated paper. The resin-impregnated paper may be impregnated sufficiently to stiffen it or may be that described in Specification 746,745, [Group XXVIII], in which the impregnating resin is a mixture of phenol formaldehyde and polyvinyl butyral applied in spirit solution and it may be reinforced with wire mesh or other foraminous material. The impregnating resin may itself form the adhesive.
Patent GB-763539-A (GB)
Title: Pressurized dispensing container with valve
IPC: A62C13/00
Filed: 1954-09-21
Abstract: 763,539. Dispensing liquids by gaseous pressure. PRESSURE PACKAGING CORPORATION, and COOKSLEY, R. D. Sept. 21, 1954 [Sept. 24, 1953], No. 27286/54. Class 102(2) [Also in Group XXIX] A dispensing container for liquids under gaseous pressure comprises a hollow body 10 with a cap 13 screwed to its open end, a nozzle 23 integral with and projecting from the cap, a tubular member - 18 mounted under the cap and carrying a syphon tube 21, a valve element 27 with a metering portion 26 slidable with small tolerance in the nozzle aperture 25 and stem 33 of reduced dia-' meter movable into the aperture to provide an enlarged opening for filling purposes, and an overcap or cover 34 carrying a spray discharge nozzle 38 and having a depressible top 37 engageable with the top of the stem 33 to open the valve against a, spring 32. The body 10, its cap 13, the valve element 27 and the tubular member or sleeve 18 may be of plastic. The lower part of the metering portion 26 is surrounded by a rubber sleeve 28 fitted into an annular groove in the enlarged base 30 of the valve element. The overcap has a base flange 35 fitting a recess in the top of the cap 13. The overcap has an internal flange 23<SP>1</SP> which snaps into a groove on the outside of the nozzle 23. The top 37 of the overcap is of reduced thickness to render it flexible but it cannot be depressed sufficiently to move the metering portion 26 out of the aperture 25. On removal of the overcap 34, a pressure filling head may be applied to the nozzle 23 to depress the valve element so that the stem 33 only occupies the aperture 25.
Patent GB-620170-A (GB)
Title: An improved arrangement for detecting flow of fluid in electric cables and pipe lines
IPC: H02G15/28
Filed: 1946-09-11
Abstract: 620,170. Locating leaks in pipes. BRITISH INSULATED CALLENDER'S CABLES, Ltd., HOLLINGSWORTH, D. T., and MORRISON, S. R. Sept. 11, 1946, No. 27320. [Class 99(ii)] [Also in Group XXXVIII] An arrangement for locating leaks in fluid-filled cables or pipe-lines comprises an oil bath formed by split end-checks 13, 13a and a circumferential metal wall 14, clamped by worm-drive clips 15, 15a, 18a round a test length of the cable or pipeline and heated externally to raise the enclosed part of the cable to a uniform temperature. After heating is stopped, the end away from the leak cools more rapidly than the other due to the flow of fluid. The temperature difference is indicated by thermocouples 5, 5a stitched to tapes 8, 8a which are riveted to insulating rods 6 forming a harness which is fastened round the test length inside the oil bath. The thermocouples are' connected in series opposition to a galvanometer 11. An approximate indication of the rate of flow can be obtained from the magnitude of the initial temperature difference by calibration on a sample test-length. The calibrated apparatus may be used to locate a leak in cases where there is a flow in addition to that due to the leak.
Patent GB-466939-A (GB)
Title: Improvements in control devices for the lighting equipment of vehicles
IPC: B60Q1/50
Filed: 1936-10-08
Abstract: 466,939. Supply systems for vehicle lamps. FIAT SOC. ANON. Oct. 8, 1936, No. 27370. Convention date, Oct. 10, 1935. [Class 38 (iv)] Switching control.-In a motor vehicle lighting system in which a push button dipping switch changes from full headlamps to dipped lamps and vice versa, the dipping switch is adapted, when the headlamps are not switched on by the main switch, to switch them on and off for signalling purposes. The main switch S connects the battery R through contact T to the side lamps 11F and through contact U and commutator switch b to the headlamps 4F, 5F or to the dipping lamps 12F. When push button dipping switch B is depressed, electromagnet a is energized and rotates commutator switch b through 90 thus interchanging the connections between full headlamps and dipped lamps. If main switch S is on contact T supplying side lamps 11F only, depression of push button switch B operates electromagnetic switch d, thus supplying headlamps 4F, 5F only as long as the switch is held down. In a modification, the relays a, d are replaced by a single relay.
Patent GB-158643-A (GB)
Title: Improvements in or relating to the spring-suspension of motor and other vehicles
IPC: B60G11/14
Filed: 1919-11-06
Abstract: 158,643. Fedden, A. H. R., Butter, L. F. G., and Cosmos Engineering Co., Ltd. Nov. 6, 1919. Springs, arrangement of.-Relates to spring suspension systems of the type in which a pair of bell-crank levers, vertically arranged in a plane transverse to the vehicle, have one end supporting the axle and the other end of each moving in a transverse horizontal plane and co-operating with a compression spring, and consists in suspending the levers in a plane outside that of the axle movement. As shown, the bell-crank levers 14, 15 work in slots in a transverse frame-member 12 to which they are pivoted, and their upper arms 18 end in recessed bosses 19 which receive projections 21 on the caps 22 of compression springs 23 seated against a central abutment 24. The lower arms. which are curved as shown, are connected to the axle through links 38, 39 and bent arms 30, 31 mounted eccentrically on the axle casings 28, 29. The links 38, 39 are arranged at the same level as the pivots of the levers. Other arrangements for securing the desired position of the levers may be used. Reference has been directed by the Comptroller to Specification 138,804.
Patent GB-939506-A (GB)
Title: Improvements in or relating to devices for automatically measuring a series of component parts with the aid of a punched tape
IPC: H01H43/24
Filed: 1962-07-17
Abstract: 939,506. Electric selective signalling systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 17, 1962 [July 20, 1961], No. 27433/62. Class 40 (1). In a punched-tape reading and feeding system each sprocket hole is sensed photo-electrically, C1, Fig. 1, to produce firstly a pulse which controls the reading of the tape, and secondly a delayed pulse, by a monostable circuit FF1, which causes the motor M to advance the tape a further sprocket hole step. The tape is said to control an automatic component (e.g. resistors, capacitors &c.) testing system.
Patent GB-662404-A (GB)
Title: Improvements in or relating to a process and apparatus for casting films and sheets,and to products manufactured according to this process
IPC: B29C41/24
Filed: 1949-10-25
Abstract: <PICT:0662404/IV (a)/1> Films and sheets are made by casting solutions of film-forming compounds on a support, preferably of a drum or band casting machine, coated with a casting layer wholly or partly consisting of a partially esterified cellulose aceto formate, the point representing the chemical composition of which falls within the area ABCD on the graph shown in the drawing.  This area is defined by the lines AD, corresponding with 80 per cent partial esterification of the aceto formates, AB, corresponding with a formyl content of more than 3 per cent, BC, corresponding with more than 14.4 per cent acetyl content, and CD, corresponding with less than 15 per cent formyl content.  Cellulose aceto formates, 80 per cent esterified with an acetyl content of 14.4-32 per cent and a formyl content of 3-15 per cent, are said to dissolve well in aqueous mixtures of several organic solvents such as acetone, dioxane, ethyl lactate and ethylene chlorhydrin to form clear dopes from which casting layers may be obtained which have a high gloss and are very stable and indifferent to many individual organic solvents, such as acetone, chlorinated hydrocarbons, and chloroform, and to many non-aqueous mixtures of solvents in which the film-forming substances are dissolved.  The cast film can therefore readily be detached from the casting layer.  In an example a cellulose aceto formate having an acetyl content based on the total cellulose mixed ester of 22.6 per cent and a formyl content of 9 per cent and whose chemical composition is represented by the point I in the drawing is dissolved in four times its weight of a mixture of acetone, water and dioxane in the volume proportion of 2 : 1 : 2.  This solution is coated on an endless band to form a casting layer which is allowed to dry.  On this casting layer is cast a film-forming solution consisting of cellulose diacetate dissolved in acetone.  After evaporation of the greater part of the solvent, the film is detached from the casting layer.  Other examples are given of the production of films in a similar manner from solutions of other cellulose esters and from ethyl cellulose, using casting layers of various compositions according to the invention.  The film-forming compounds used may be cellulose esters, cellulose ethers, polyvinyl compounds or synthetic rubber compounds, and the solvent may be removed from the film-forming layer by evaporation under reduced pressure or in a current of air or in processes in which the cast film-forming layer is passed through a precipitating bath.
Patent GB-1041218-A (GB)
Title: Improvements in or relating to cathode structures
Inventor: MYFORD THOMAS WILLIAM
IPC: H01J9/04
Filed: 1962-07-17
Abstract: A method of coating metal strip, for use as a cathode sleeve in a thermionic cathode, with insulating material comprises applying to one face of the strip a layer of electrically insulating refractory metal oxide of higher melting point than the strip in the form of a powder suspended in a binder, consolidating the layer by pressure, and subsequently forming the strip into a sleeve.  The metal strip may be of nickel, the insulating powder may be alumina.  The binder may be an organic binder which is subsequently removed by heating and the layer may be consolidated by rolling.  The binder may be introcellulose or methyl methacrylate dissolved in a solvent.
Patent GB-480189-A (GB)
Title: Improvements relating to paper tubes for use in yarn spinning, winding and like machines
IPC: B65H75/30
Filed: 1936-10-10
Abstract: 480,189. Tubes for spinning &c. machines. SWAILES, Ltd., and TAYLOR, A. Oct. 10, 1936, No 27567. [Class 120 (iii)] A paper tube for yarn spinning winding, and like machines is formed from paper which is embossed at the part forming the interior lower portior so as to provide a corrugated or other interrupted raised surface, whereby a barrel-shaped spindle is adequately engaged.
Patent GB-350846-A (GB)
Title: Improvements in or relating to non-skid appliances for automobile wheels fitted withresilient tyres
IPC: B60C27/20
Filed: 1930-09-16
Abstract: 350,846. Tyre gaiters. AUTOMOBILES M. BERLIET, Venissieux, Rhone, France. Sept. 16, 1930, No. 27685. Convention date, Oct. 2, 1929. [Class 144 (ii).] Tyre gaiters 4 are attached by chains 5 engaging hooks 1 at the inner side of the wheel, and headed studs 9 on chains 8 at the outer side engaging apertures 2 in the wheel disc. For looking the studs 9 in position, a ring 10 is fitted with plates 11 adapted to cover the apertures 2.
Patent GB-189312-A (GB)
Title: Improvements in and relating to water heaters
IPC: F24H1/20
Filed: 1921-10-19
Abstract: 189,312. Rees, T. L. H., and Billington, W. J. Oct. 19, 1921. Block - form boilers; annular boilers. - A water heater comprises a single container b within which is disposed a displacer f' so as to form three intercommunicating compartments, inner and outer annular chambers, each of which is heated by the combustion products, and an upper storage compartment.
Patent GB-160871-A (GB)
Title: Improvements in life-guards for motor buses and the like road vehicles
IPC: B60R21/34
Filed: 1919-11-12
Abstract: 160,871. Mallins, C. W., and Barker, J. P. Nov. 12, 1919. Wheel-guards and obstruction-removers. - A life-guard for motor &c. vehicles comprises a central front guard A, guards for each of the front wheels in the form of hoods B mounted upon the stub axles so as to turn with the wheels in steering and adapted to be in all-positions at the rear of the front guard, and side guards c attached at the front end to the front axle d<1>, extending parallel to the centre line of the vehicle, and having at the rear end a fixed or pivoted bifurcated portion c<1> embracing the rear wheel. The hoods B are provided with an inwardly turned extension b<1>, Fig. 2, as that no gap is left between the hoods and centre guard A when the wheels are deflected. The bifurcated portion c<1> may be formed of a series of slats fixed to a vertical bar c', Fig. 1, attached to the rear ends of the lowermost slats c<1>, c<2> of the side-guard C. Or, as in the construction shown in Fig. 2, the guard for the rear wheel may be pivoted about a vertical rod g<1> and adapted on encountering an obstacle to swing against the action of a control spring g<6> so as to deflect the obstacle outwardry to one side.
Patent GB-282943-A (GB)
Title: Improvements in or relating to valves for use with gas purifiers
IPC: C10K1/28
Filed: 1926-11-09
Abstract: 282,943. Hollis, H. H. Nov. 9, 1926. Purifiers.-A reversing valve for gas purifiers comprises a flanged connector 18 against each of the openings 2B in the walls and is rectangular or polygonal in cross section forming with the wall an open-ended box-like structure. A plate valve 29 secured to the squared lower end of a spindle 33 is provided with a rubber or other resilient packing piece 43, 44 on each face adapted to contact with a seating 21 or 22 according to the position of the valve which is operable by a hand wheel 47 mounted on a screw-threaded portion of the spindle. In the case of two connectors only being employed communicating respectively with incoming and outgoing gas pipes, the two valves are in opposed positions, and if the inlet valve is seated as shown, incoming gas will be delivered to the bottom of the purifier and will rise therein, escaping downwardly through the other connectors to the outlet. On reversing the valve positions gas passes downwardly through the purifier. The cover 7 is pressed down on the grating 5 by means of a pin and nut 11, 12, and a transverse plate 13 a trough being formed by a projection 9 and rubber or other packing 10 extending round the opening 6. Specification 2768/15 is referred to.
Patent GB-456694-A (GB)
Title: Improvements in or relating to washing machines
IPC: A47L15/23
Filed: 1935-10-11
Abstract: 456,694. Washing-machines. HOBART MANUFACTURING CO., Pennsylvania Avenue, Troy, Miami, Ohio, U.S.A.-(Assignees of Meeker, D. A.) Oct. 11, 1935, No. 28158. Convention date, Oct. 12, 1934. [Class 138 (i)] A washing-machine comprises a tank open at the top, and a cover provided with trunnions pivotally mounted on supporting means which are positioned above the top of the tank and offset from the central vertical plane passing through the cover in the closed position. In the construction shown in Fig. 1, a tank 10 adapted to hold washing liquid is provided with supports 65 for two pairs of trunnions 63 which are provided on the cover 12. The supports 65 are open at the top to permit tilting of the cover about either pair of trunnions. The tilting movement is limited by the handles 68. Pivotal movement about either of the handles 68 is prevented by projecting portions 72 on the trunnion supports. Each trunnion is provided with a roller sleeve to prevent noise on movement of the cover. The articles to be washed are carried by a rack 45, the washing being effected by a rotary spray pipe 20 through which liquid is forced from a sump 24 by a pump 33. The sump has an outlet closed by a detachable overflow pipe 30. Rinsing liquid may be supplied through a pipe 21 which is preferably of the rotary type and is connected through pipe 44 to a source of water supply. The rack 45 is supported by a structure 14 provided with arms 54 which are detachably fitted in sockets 57. In a modification shown in Fig. 4, only one pair of trunnions 84 is provided on the cover, which is adapted to tilt in one direction only. The frame supporting the rack 45 is provided with projecting members 94, 98 adapted to engage detachably in sockets provided in the upper edge of the tank. This edge is provided with a ledge 88 which extends across the front and part of the side portions of the tank and is adapted to prevent overflow of liquid during washing operations. For the same purpose the rear portion of the upper edge of the tank is formed with an inturned flange 70 engaged by a flange 71 on the cover when the latter is closed.
Patent GB-426735-A (GB)
Title: Improvements in or relating to television and the like systems
IPC: H04N5/16
Filed: 1933-10-12
Abstract: 426,735. Television transmitters. BROWNE, C. O., 29, Monk's Drive, West Acton, London. Oct. 12, 1933, No. 28235. [Class 40 (iii)] To render picture signals interspersed with auxiliary signals capable of being passed, without loss of signals representative of the general brightness or of slow changes in the brightness of the object, through apparatus incapable of passing frequencies below a limiting value, the picture and auxiliary signals are injected in the transmission channel on opposite sides of an electric datum corresponding to, or fixedly related to, black, and the energy contained in each auxiliary signal is substantially equal to the average energy in one or more trains of picture signals. A line synchronizing signal is obtained from an illuminated gate 12, an image 14 of which is swept over an aperture 15 by a scanning mirror 4 immediately before an image 9 of a scanned line 2 of a film 1 is swept over an aperture 10. The boundary of the gate 12 corresponding to the end of the synchronizing signal is varied by a vane 40 on the coil 42 of a galvanometer 41 controlled by rectified current derived from the picture signals. Alternatively, the galvanometer is controlled from an auxiliary photo-electric cell illuminated from all, or from the edge, of one picture on the film. To prevent shift of the datum when the picture is black the photo-electric cell 11 is always illuminated from a small amount of constant light. The duration of the synchronizing signals may be made constant and the amplitude varied by controlling the current to the light source 13 which illuminates the gate 12. The width of a part only of the gate 12 may be varied by the vane 40. According to a modification, the size and illumination of the gate 12 is constant and the amplification of the synchronizing signal is varied, Fig. 5 (not shown).