baber/WOPTO huggingface dataset:
Patent GB-1512466-A (GB)
Title: Oscillators
IPC: H03B5/36
Filed: 1976-04-28
Abstract: 1512466 Oscillators INTERNATIONAL BUSINESS MACHINES CORP 28 April 1976 [30 June 1975] 17196/76 Heading H3T An oscillator, for use e.g. for clocking digital circuits, comprises a series resonant circuit 1 connected to the input of a voltage amplification stage 2 the output of which feeds a limiting differential amplifier 11, 12 having its output connected via a filter 7, 18, 19 and an impedance matching stage 3 to the other side of circuit 1. The circuit is stated to be an improvement on a Butler oscillator, Fig. 1 (not shown), in so far as it includes the limiting amplifier and the filter. In the embodiment described the series resonant circuit 1 is a piezoelectric crystal, and the stage 2 is a common-base amplifier, the differential amplifier having a reference input to transistor 12 provided from the collector of a transistor 14 configured to match transistor 2. A square wave output is available from terminal 21. The filter is a parallel resonant circuit 18, 19 with a damping resistor 7 to prevent pulling. An attenuator 8, 9 is provided to maintain the operation of transistors 2 and 3 in a linear region. Resistor 55 may be adjusted to vary the gain of amplifier 11, 12.
Patent GB-667572-A (GB)
Title: Traveling grate incinerator for city refuse and the like
IPC: F23G5/00
Filed: 1949-06-30
Abstract: 667,572. Impact pulverizers. DEHN, S. G. (Oakland Scavenger Co.). June 30, 1949, No. 17347/49. Class 59 [Also in Group XII] An incinerator is provided with a horizontal series of chambers each containing a corresponding travelling grate, the tops of the chambers and the grate being arranged in step formation, means being provided to feed refuse on to the topmost grate and heating means being provided in the lowermost chamber, the vertical cross-sections of the chambers successively decreasing the greatest being at the feed end of the furnace. Within the furnace casing A are arranged overlapping travelling grates 2, 3, 4, 5. Garbage is fed on to the uppermost grate 2 and is dried and burnt in its passage to the lowermost grate 5 by heat from burners 6 located above the lowermost grate 5. Combustion air supplied through controlled openings 11 beneath all the grates 2, 3, 4 except the lowermost 5 which receives air from a blower through openings 42. Products of combustion- and,-vapours,.,escape through a port 7 above the uppermost grate 2 into a precipitation tank and thence to a smoke stack. A distributing plate 14 in the shape of a quadrant bent along its radial median is arranged in the refuse receiving chamber 19 and is operated by. rod. Hinged baffle plates 45 are provided, between the operlapping ends of the travelling grates 2, 3, 4, 5 to prevent garbage being carried beneath the grates by combustion gases. A rotary water-cooled lump breaker 26 comprising a hollow axle 27 carrying staggered hollow breaking arms 28 is arranged above the lowermost grate 5.
Patent GB-130348-A (GB)
Title: An Improved Indicating Instrument for use in connection with Fuze Setting Operations.
Inventor: DAWSON ARTHUR TREVOR
IPC: F42C17/00
Filed: 1917-11-24
Abstract: 130,348. Dawson, Sir A. T., and Buckham, Sir G. T. Nov. 24, 1917. Gunnery calculating-apparatus.-Consists in a fuse-setting indicator for use especially in connexion with anti-aircraft guns, in which account is taken of the change of range in the estimated interval of time occupied in setting the fuse and loading the gun. In the construction shown, the instrument comprises a chart A of fuse curves carried by a bracket A', a pointer B pivoted at a point B<1> representng the gun position, and a wire C movable over the chart in accordance with the height of the target. The pointer B is connected by suitable linkage to the gun sight so as to move in accordance with the angle of sight, and the chart itself is turned about the same axis as the pointer an angle equal to the vertical component of the angular velocity of the target multiplied by the sum of the time of flight of the projectile and the estimated time x taken in fuse setting and loading. The reading is' then taken on the chart at the intersection of the pointer B and wire C. The sight (not shown), to which the indicator is connected, is provided with vertical deflection gear which applies a speed correction equal to the product of the vertical component of the angular velocity of the target and the time of flight of the projectile. Mounted on the frame A<1> is a slide A<4> adapted to be traversed by suitable gearing connected to the vertical defection gear of the sight a distance equal to the tangent of the vertical deflection angle, and having a pivoted block A<3> engaging a vertical slot in a fixed bracket D on the gun carriage so that the frame A<1> is turned about an axis A<2> through the vertical deflection angle. This angle is increased by an angle equal to the vertical deflection angle divided by the time of flight and multiplied by the time x taken for the fuse setting and loading operations by moving the slide A<4> nearer to the axis A<2>B<1> by means of gear operated by a hand-wheel a<4>, the movement being indicated on a dial a<5> graduated with fuse curves arranged to enable the correct movement to be given to the slide A<4>. A number of interchangeable dials with suitable curves to allow for various values of x may be provided, and the curves are read against a pointer A<5>, which is operated by the height wire so that it moves across the face of the dial in accordance with the height. In using the instrument, the height wire is set to the known height of the target and the hand-wheel is actuated to keep the reading on the dial a<5> the same as that indicated on the chart, thereby giving the correct predicted fuse number. A fixed pointer a<6> is provided, by which the dial a<5> may be set to the time of flight when this is known exactly.
Patent GB-576547-A (GB)
Title: Improvements in pipe or tube couplings
IPC: F16B7/04
Filed: 1944-09-12
Abstract: 576,547. Railings. RAYLOR, W., and RAYLOR, J. W. Sept. 12, 1944, No. 17383. [Class 45] [Also in Croups XXV and XXVIII] A tube coupling, particularly for scaffolding or railings, comprises a bar 3 secured in a tube 2 and projecting into the end of an adjacent tube 1 and a pin 5 projecting through di metrical hole in the bar and having screwthreaded portions 10, 11 of different diameter engaging in screw-threaded holes in the opposite sides of the tube. In a modification, the pin is in two parts 15, 16, Fig. 2, each having conical heads engaging the openings 9, 18 in the tube, the screw 15 screwing into the diametrical hole in the bar 3 and the screw 16 screwing into a threaded tore 17 of the screw 15.
Patent GB-614317-A (GB)
Title: A machine for examining fabric and other web material
IPC: D06H3/06
Filed: 1945-07-09
Abstract: 614,317. Inspecting fabrics. BATES, E. B. July 9, 1945, No. 17420. [Class 42(ii)] [Also in Group XX] An apparatus for the visual examination of fabrics or other web material comprises a cylinder rotatable in a support and having a smooth transparent periphery around which the web travels, means on the support for the reception of a bulk supply of the web to be examined and illuminating means for projecting light outwards through the cylinder and web over substantially the whole length of the cylinder and over an adequate arc of its circumference. As shown, the cylinder 1 as of synthetic resin is connected by spokes 4 with an axle 3 in the support 2 and may be rotated by an electric motor (not shown). The axle may be hollow to allow the passage of leads from an electric supply to a lamp or lamps 5 with which are associated reflectors 6a, 6b and 6c; the reflectors are suspended from the axle by spokes and reflectors 6b, 6c may be adjustable to vary the area A of the illuminated portion of the web which passes around the cylinder from a supply race 8 to a take-up race 9. These races 8, 9 are each mounted on spindles removably mounted on arms 7, 10 respectively projecting from the support 2; the take-up race 9 is driven by the cylinder itself.
Patent GB-1011706-A (GB)
Title: Improvements in colour television transmitters
IPC: H04N11/12
Filed: 1963-05-02
Abstract: 1,011,706. Colour television; transistor limiter circuits. COMPAGNIE FRANCAISE DE TELEVISION. May 2, 1963 [May 2, 1962], No. 17457/63. Headings H3T and H4F. In a colour television transmitter for use in a system, such as the SECAM system, in which a picture signal (i.e. chrominance signal), frequency modulates a wave and creates a signal frequency band which lies within the band of another picture signal (i.e. the luminance signal), there is provided means responsive to the components of said another signal within said band for establishing the relative amplitude of the frequency modulated wave and said components at such a level that the components do not introduce distortions when the wave is demodulated at a receiver. In one way of carrying out the invention, Fig. 2, the luminance signal, before combination with the frequency modulated wave, is passed through a transistor circuit 11 associated with a diode limiter 16. The emitter circuit includes a network 14, 15 series resonant at the frequency of the frequency modulated wave and functions to provide frequency emphasis over the band of the luminance signal which is common with the frequency modulated wave. The collector output circuit includes a network 14<SP>1</SP>, 15<SP>1</SP> also resonant at the frequency of the wave and provides de-emphasis over the common band. For low amplitudes of luminance signal, where diode 16 is conducting, the gain of the circuit is constant throughout the luminance band, but for higher amplitudes of signal, such as may cause interference and distortion of the frequency modulated wave, diode 16 cuts off to limit the signals over the common band. In another way of carrying out the invention, Fig. 3, a band of the luminance signal 20 corresponding to the frequency modulated wave is selected by a filter 21 and applied via an amplifier 22 to a rectifier 23 feeding a low-pass filter 28. The resulting signal controls an amplitude modulator 24 through which the frequency modulated wave 26 is passed before it is combined with the luminance signal in a mixer 25. The modulation factor is selected so that the frequency modulated wave is always of sufficient amplitude relative to the luminance signal. A threshold circuit may be included between filter 28 and modulator 26 so that modulation operates only above a predetermined luminance level.
Patent GB-859125-A (GB)
Title: Improvements in and relating to apparatus for cleaning tank-waggons tanks and other chambers
IPC: B61D5/00
Filed: 1957-06-03
Abstract: 859,125. Cleaning tanks. SOC. LAMY D'ETUDES ET DE RECHERCHES SOLER. June 3, 1957 [June 5, 1956], No. 17507/57. Class 138(1). [Also in Group XXIX] A rotary sprinkler for cleaning tanks &c. consists of a stationary tube 1 with a base 2 and a plugged lower end 8 which supports a tubular rotor R with arms 5 on each of which a sprinkler T2 is rotatably mounted. A sprinkler T<SP>1</SP> drives the rotor about the tube and consists of an annular body 10 fixed to the rotor by one or more screws 11, Fig. 2. Nozzles 15a, 15b extend from bosses on the body 10, and the opposed nozzles 15b are inclined to the radial direction to effect the sprinkler and rotor rotation. The liquid 'fed through the tube 1 flows through ports 18 and 20 in the tubes and rotor respectively to the nozzles 15a, 15b and the said ports are arranged at right angles so that the liquid flow therethrough sets up a torque in opposition to the direction of rotation. By a choice of ports and of the inclinations of the nozzles 15b the rotor speed is made substantially independent of the liquid supply pressure. The arrangement of the sprinklers T2, Figs. 1 and 4, on the arms 5 is similar to that of the sprinkler T<SP>1</SP> on the rotor. The annular body 21 of each sprinkler T2 has nozzles 23a, 23b and is held by screws on a ring 25 journalled on an arm 5. The inclined nozzles 23b effect rotation of the sprinkler and ports 30, Fig. 4 in the arm cooperate with ports 33 in the ring 25 to provide an opposing torque. The sprinkler has a protecting cage comprising rods 40 interconnected by rings 44, 45. Fig. 5, shows a method of cleaning the interior of a tank-wagon 46 divided by partitions 51 into compartments. 48-50. By placing the sprinkler successively' in positions I, II and III the compartments are cleaned in turn. The sprinkler is carried at the end of a bent pipe 52 slidably mounted in a ball and socket joint 54 rotatably mounted in a support 55 detachably coupled to a manhole 47.
Patent GB-621489-A (GB)
Title: Ice detector means and de-icing means
IPC: B64D15/20
Filed: 1944-09-13
Abstract: 621,489. Preventing and signalling formation of ice on aircraft. BENDIX AVIATION CORPORATION. Sept. 13, 1944, No. 17533. Convention date, Aug. 11, 1943. [Class 4] [Also in Group XL (b)] Means for removing ice from aircraft or for detecting ice formation are set in action only when a predetermined thickness of ice has accumulated on an aerofoil surface. In the construction shown, embodying expansible iceremoving means comprising a boot 11 and inflatable tubes 13, 14, 15 as in Specification 621,490, the actuating means is electrically controlled by a photo-electric device including two glass rods 20, 21 between the free ends 23, 24 of which ice may accumulate and interrupt light normally passing from an electric lamp 27 along the rods to a photo-electric cell 31 connected to the grid of an electronic valve 41 through which a current normally flows to excite an electromagnet 55 controlling the deicing means 67 by holding spring contacts 65, 65A apart; on interruption of the light, the negative bias of the valve grid is increased and the valve current is diminished so that the attraction of the electromagnet is insufficient to hold open the control contacts of the deicing means which is thus brought into operation. As shown in Fig. 6, a metal sleeve 100 is secured by a flange 102 and nut 109 in an aperture of the wing so as to expose the end of an insulation member 103 mounted in the sleeve. Leads 108 and 107 of an electric control circuit for the de-icer are connected respectively to nut 109 and a metal cap 105 on the outer end of member 103, which insulates the cap from the flange 102 of the sleeve 100 ; the leads 108 and 107 will be electrically connected when ice accumulates on the insulator and allows a grid leak to be produced in the electronic valve 114 of the control circuit for the de-icer. A warning light 67A may also be shown when either of the devices shown actuates the de-icer ; or a whistle or alarm may be sounded. Reference is made to Specification 621,464 as showing a timing device for the de-icer operation.
Patent GB-707587-A (GB)
Title: Manufacture of poly-alkoxy-, poly-aryloxy- or poly-acyloxy-siloxanes
IPC: C08G77/38
Filed: 1951-07-25
Abstract: In making alkoxy-, aryloxy- or acyloxy-polysiloxanes by reacting a polysiloxane containing -RHSiO- units, in which R is a saturated aliphatic hydrocarbon radical, with an alcohol, phenol or a compound containing at least one carboxylic acid group, the reaction is effected in the presence of an ansolvo acid, e.g. zinc chloride, as catalyst.  In examples, a polysiloxane containing CH3.H.SiO- units is reacted with (1) ethyl alcohol, and (2) acetic acid, in the presence of anhydrous zinc chloride. Specification 707,564 is referred to.
Patent GB-295801-A (GB)
Title: Improvements in and relating to the drying of hay, straw and the like products
IPC: F26B9/10
Filed: 1927-07-04
Abstract: 295,801. Lyon, C. July 4, 1927. Heating by circulation of fluids.-Hay, straw, beet, or the like are dried by being formed into a stack around heating coils or radiators preferably enshrouded by a conical or other shaped grille, the coils being heated by water circulation and the water circulating being at a pressure above atmospheric, and being maintained above 100‹ C. Air is forced from below over the coils and through the stack. Devices may be provided to check the heating of the water or to prevent its circulation should the air current be stopped. The heating pipes are preferably arranged in concentric co-axial groups each group being connected to a similar group in a furnace so that water passes in series through a group in the furnace, a group in the stack, the next group in the furnace, the next in the stack and so on. An expansion chamber may be provided at the highest point of the system.
Patent GB-530132-A (GB)
Title: Improvements relating to spring weighing apparatus
IPC: G01G3/04
Filed: 1939-06-17
Abstract: 530,132. Weighing-apparatus. SALTER & CO., Ltd., G., and BACHE, J. K. June 17, 1939, No. 17714. [Class 143] Temperature variations, compensating for. In a weighing-apparatus employing a main lever connected to a weighing spring, change of temperature is compensated for by a thermostat extending in the longitudinal direction of the lever and acting on an auxiliary lever pivoted to the main lever, so as to vary the point of application of the load or weighing spring in relation to the fulcrum of the lever. As shown diagrammatically in Fig. 5, the main lever 1 mounted on a fulcrum 2 is suspended at one end from a weighing spring 3 and carries at an intermediate point an auxiliary bell-crank lever 6 connected by a link 8 to a bimetallic-thermostat 9. The load is applied to a shackle 4 suspended from the lever 6. On a change of temperature, the thermostat 9 rocks the lever 6 and varies the point of suspension of the load. In a practical embodiment, Fig. 1 (not shown), the load is divided between two such main levers 1 directed in opposite directions and coupled to a number of weighing springs. In a modification, Fig. 6 (not shown), the auxiliary lever 6 is arranged to move the point of application of the spring 3. In a further modification, Fig. 7, each of two oppositely directed main levers 1 coupled by shackles 4 to the load and resisted by weighing spring 3 carries an axially-expansible rod 33 which rocks a load-supporting lever 6 to compensate for temperature change. In a further modification, Fig. 9 (not shown), the axiallyexpansible rod displaces a lever supporting the weighing spring.
Patent GB-585354-A (GB)
Title: Improvements in or relating to the production of valuable products from solid carbonaceous materials
IPC: C10J3/46
Filed: 1943-10-27
Abstract: 585,354. Distillation of solid fuel. ARNOLD, J. C. (Standard Oil Development Co.). Oct. 27, 1943, No. 17764. [Class 55 (i)] In a process for the distillation of solid carbonaceous materials, a stream of fluidized finely divided, carbonaceous particles is fed into a vertical reaction zone, the solids being maintained as a relatively dense fluidized phase dispersed and entrained in an upwardly flowing gas stream to which is supplied an oxidizing gas, with or without steam, whereby a portion of the carbonaceous material is burned, the heat produced converting the remainder to fuel products which are withdrawn from the reaction zone and the solid products are withdrawn as a fluidized stream. As shown, coke or coal is fed into a hopper 1 where is is dispersed as a dense suspension in gas or superheated steam, the suspension being then led through a pipe 6 to a reaction vessel 7. Air and steam, the latter preferably superheated in vessel 9, are admitted with the suspension and controlled so that there is partial combustion of the coal or coke, sufficient heat being generated to cause reaction with the steam to form carbon monoxide and hydrogen, which fuel products are 'removed through a dust separator 10 in the upper portion of the vessel. The solid products of the reaction are withdrawn through a pipe 12 in the bottom of the vessel. If steam is not added to the reaction vessel the fuel products are in the form of liquid fuels. The particle size may vary from below 50 mesh to ¢ inch and the velocity of the fluidizing gas from 1 to 20 feet per second. Other carbonaceous materials, e.g., peat, lignite, tar sand and shale may also be treated.
Patent GB-1354452-A (GB)
Title: Apparatus for filling containers with liquid under gas pressure
IPC: B67C3/32
Filed: 1972-04-18
Abstract: 1354452 Counterpressure filling machine ENZINGER-UNION-WERKE AG 18 April 1972 [14 May 1971] 17781/72 Heading B8T In a counterpressure filling machine the top gas and exhaust gas conduits 5, 8 are separate from the liquid supply conduit 7 and the pressures in the conduits are all controllable independently. Top gas, at a pressure regulated by valve 2 is fed to the gas supply conduit 5 and from there to the container via pipe 9b. Liquid is fed through lines 6a and 6 at a pressure regulated by valve 17, which has a diaphragm 17a acted on by gas at a controlled pressure from the line 18 on one side, and the liquid via a feedback line 17b on the other side, to the liquid supply conduit 7 and into the container 10 through the pipe 9a. Exhaust gas is returned through the pipe 9c to the conduit 8 from which it passes to an observation gauge 12 where any liquid and foam separate out and are drawn off through valve 43. An adjustable valve 14 releases exhaust gas above a preset pressure to atmosphere out of the gauge 12 via line 13, which is also connected to an overflow line 15 in which a return valve 16 is placed, allowing some equalization of pressure between the supply gas conduit 5 and the exhaust gas conduit 8 at a rate controlled by a throttle valve 19. The liquid supply conduit 7 has a vertical extension 20 up which any bubbles from the liquid rise to be vented via an observation gauge 21 out of valve 23. A plurality of devices 9 may be connected, each by three pipes 9a, 9b, 9c, to the conduits 7, 5, 8.
Patent GB-1040455-A (GB)
Title: New or improved method of and apparatus for grinding materials in mills
Inventor: GOESER PAUL AUGUST
IPC: B02C17/16
Filed: 1963-05-06
Abstract: 1, 40, 455. Grinding apparatus. DRAISWERKE G.m.b.H. May 6, 1963, No. 17878/63. Heading B2A. Grinding is carried out in a mill of the kind comprising a closed or closable container enclosing agitators and a grinding medium such as sand or balls, operated at above atmospheric pressure. Material to be ground is pumped into a casing 1 for grinding by paddles 3 and pressure is maintained by a throttle 7; in the outlet 6 for the ground material, the throttle being appropriately adjusted when continuously grinding and kept closed when batch-grinding. Compressed air or gas may be supplied to the mill from a compressor 9. The pressure may be provided by the pump alone, the compressor alone or by both together. In the arrangement of Fig. 2 (not shown), the desired working pressure in the mill is determined by the pressure at which the material is pumped into the mill by a pump 15 and the settings of a choke 17 at the outlet 16. The drum 11 is surrounded by a cooling-jacket and includes a sieve at its upper or outlet end. A number of such mills may be operated in series, with a common pressure producing and maintaining system.
Patent GB-698089-A (GB)
Title: Improvements in or relating to the prevention of sparking in electric switches
Inventor: FULLER DENNIS QUINTRELL
IPC: H01H9/54
Filed: 1949-08-05
Abstract: 698,089. Thermal switches; sparking preventing. PYE, Ltd. July 24,1950 [Aug. 5, 1949], No. 17924/50 Divided out of 698,076 [Group XXXV]. Class 38 (v) The two strips 22, 25 carrying the contacts of a thermal or other switch have enlarged portions such as 27 which serve as the plates of a condenser connected across the contacts. In the form shown, the strip 22 is of bimetal and an intermediate insulating plate 24 of ceramic or other material of high dialectric constant separates the parts 27, 25. The switch is used for controlling the temperature of a quartz crystal unit ,described in Specification 698,076.