baber/WOPTO huggingface dataset:
Patent GB-1334248-A (GB)
Title: Method and apparatus for separating objects accordint to density
Inventor: HSIEH J J-C
IPC: B03B13/00
Filed: 1970-12-07
Abstract: 1334248 Separation of solids of different densities BATTELLE DEVELOPMENT CORP 7 Dec 1970 [4 Feb 1970] 58055/70 Heading B2H  Objects are separated according to density by placing the objects in a fluid contained in a vessel, the density of the fluid being such that the objects take up substantially the same horizontal level in the vessel, and changing the effective density of a portion of the fluid to a value intermediate the densities of the objects to effect in said portion the separation between said objects based upon the buoyancy of the respective objects. The fluid may be a liquid (examples of which are given) or a gas and may have its effective density varied by one of a number of means including temperature and/or pressure variations, addition of chemicals soluble in the fluid, dilution with a lighter or heavier fluid, injection of immiscible fluids into the fluid, electrolysis &c. Numerous examples of the types of objects that may be separated are given. In one example of apparatus used for separating various types of refuse materials, a tank 32 containing water has a heavy material settling zone 42, an air-water mixture zone 46 in which air, introduced through an air bubble generator 34 is mixed with the water to reduce its effective density, and a quiescent zone 51. The bubble generator may have a porous structure made of a sintered material such as a fritted glass disc or a sintered stainless steel or copper plate. The refuse materials are introduced into the tank through a feeder 44. The heavy material sinks into the zone 42 and is removed by a conveyor 43. The lighter materials 47 which float on the water are transported by the flow of water provided by water inlet 39 to the zone 46. In zone 46 material leaving a specific gravity less than that of the air-water mixture remains afloat and is removed by a conveyor 50. Material 49 having a greater specific gravity sinks to a certain extent in the air-water mixture and is transported by the flow of water to the quiescent zone 51 where it regains positive buoyancy, rises to the surface of the water and is discharged over a weir 53 on to a screen 54 where the water is drained and returned to the tank through the inlet 32. More than one air-water mixture zone having various ratios of air to water in the mixture may be used to provide a more complete split of the materials according to density.  A simple form of apparatus without a heavy material settling zone is described.
Patent GB-1386764-A (GB)
Title: Devices for brewing infusions
IPC: A47J31/40
Filed: 1970-12-08
Abstract: 1386764 Infusion brewing machines VENDING CENTRE (HOLDINGS) Ltd 29 Feb 1972 [8 Dec 1970] 58137/70 Heading A4E An infusion brewing machine comprises a container 2 having an inlet sealable by a lid 8 and an outlet closable by a base 4 carrying a filter 6, the container 2 being mounted on a base 12 slidable on rails 14 between a loading station, Fig. 1 (not shown), at which the outlet is closed, the inlet is open and a charge of infusable substance and hot water are introduced into the container, to a dispensing station, Fig.2 (not shown), at which the inlet and outlet are closed and pressurized air is introduced into the container 2 via a pipe 10 to clear a central area of the filter 6 and force the infusion out of the container 2, and to a cleansing station, Fig.3, at which the inlet is closed and the outlet is open to discharge split substance and a hot water nozzle is directed to clear the filter 6. The base 4 is pivoted to the container 2 and is moved under the control of a cam rail (not shown). The lid 8 is mounted on an axle 18 carrying an eccentric square cam 24, Fig.5 (not shown) and Fig.4, fixed on its lower end and rotatably mounting a cam 22, carrying a slotted arm 26 engaging a pin 28, and a cam 20 fixed to base 12. As the container 2 moves from the loading station to the dispensing station cam 24, axle 18 and lid 8 are first thrust downwards and when cam 24 engages an abutment 25, lid 8 is rotated through 90 degrees and is then lowered further to seal the container inlet by the action of cams 20, 22, arm 26 and pin 28. A helical spring on the axle 18 reverses these movements as the container 2 moves back to the loading station. The machine may be actuated by a coin-feed device controlling a timer which operates an infusible substance feeder, a water feeder, an automatic cup dispenser and a chain drive which is driven at timed intervals to reciprocate container 2 between the loading and cleansing stations.
Patent GB-1287476-A (GB)
Title: Improvements in or relating to a connecting device for pipes and applications thereof
IPC: F16L19/06
Filed: 1969-12-01
Abstract: 1287476 Pipe couplings CENTRE DE RECHERCHES DE PONT A MOUSSON 1 Dec 1969 [17 Dec 1968] 58583/69 Heading F2G To couple pipes 1, 2, nuts 8, 9 are screwed together whence clamping faces 10 deform helical springs 6a and thus flexible sealing sleeves 3a both to such an extent that the sleeves 3a form a hermetic seal and the end coils of the springs 6a bite into the pipes 1 and 2. A construction as on the right side of this coupling may be used to couple a pipe 2 to an externally threaded pipe 11. A rigid collar 4a may be embedded in each sleeve 3a to prevent the sleeve being forced inwardly between the pipes. In a modification, a single sealing sleeve and a single helical spring embrace the ends of both pipes. The nuts 8, 9 may have flanges in place of screw threads and the helical spring may be made from metal with a square, instead of a round, cross-section.
Patent GB-1361153-A (GB)
Title: Adaptive braking system
IPC: B60T8/60
Filed: 1972-12-22
Abstract: 1361153 Antiskid braking systems SOC ANON DBA 22 Dec 1972 [29 Dec 1971] 59341/72 Heading F2F An antiskid braking system in which control means exert braking pressure in successive stages of increase or decrease separated from one another by intervals during which the braking pressure is kept constant is characterized in that the control means provide a stage of pressure increase after an interval when the deceleration of a wheel has been decreasing or has been constant and a stage of pressure decrease whenever the deceleration has been increasing. The apparatus includes a unit 38 for detecting increase or decrease in acceleration of a wheel 32, a unit 34 comprising time base forming means, a unit 36 controlling braking pressure, comparison means 40 and a pressure release device 44. The unit 36 comprises an AND gate 56 with two inputs receiving time base signals at one and at the other a signal from a comparison circuit 70 via an inverter 72, the output controlling, through an inverter amplifier 54 an input valve 52. An AND gate 74 receiving both time base signals and a comparison signal controls a valve 78 which releases braking pressure. By suitable switching means (not shown) valves 52, 78 may be immobilized to prevent operation of the system before the braking pressure exceeds a predetermined value.
Patent GB-1414117-A (GB)
Title: Tyre stitching apparatus
IPC: B29D30/14
Filed: 1972-12-22
Abstract: 1414117 Tyre stitching apparatus BRIDGESTONE TIRE KK 22 Dec 1972 [31 Dec 1971] 59525/72 Heading B7C Apparatus for stitching the components of a tyre applied to a building drum, comprises a frame 10 carrying two stitching assemblies 14, 14<SP>1</SP> movable simultaneously in opposed directions parallel to the drum axis, each stitching assembly comprising a carriage 30 (30<SP>1</SP>) pivotally supporting an arm 31 (31<SP>1</SP>) carrying at its free end a freely rotatable stitching disc 33 (33<SP>1</SP>) and means, e.g. a piston and cylinder 34 (34<SP>1</SP>), for urging the disc against the components on the drum. As illustrated each carriage is moved along a respective pair of shafts 11, 11<SP>1</SP> by a respective screw threaded shaft 15 driven by a common electric motor (16) (Fig. 2, not shown). Movement of the carriages and of the movement of the discs 33, 331 towards and away from the drum is controlled by an electric circuit (Fig. 11, not shown) which includes manual push buttons (PB1, PB2, PB3, PB4) (Fig. 11, not shown) and switches 1-7 mounted on the frame 10 and actuated when actuators 53, 54 are adjacent thereto, the actuators being indexed by means of a screw threaded shaft 26 driven in synchronism with shafts 15 by the motor. When, in use, the carriage moves beyond its position 4 (Fig. 8), a stop rod 40 engaging a cam rod 28 moves to a position out of the path of projection 39 on the arm 31, so as to allow pivoting of arm 31 beyond position of Fig. 8 for stitching a chafer strip 42 against the radially inner surface of a bead. The Specification also discloses that the carriages may be moved by a single screw threaded shaft having two oppositely threaded portions, and that the push buttons may be replaced by switches controlled by suitable control means.
Patent GB-1453945-A (GB)
Title: Frequency tracking receivers
IPC: G01S17/50
Filed: 1973-12-21
Abstract: 1453945 Radio receiving apparatus; automatic frequency control BBC BROWN BOVERI & CO Ltd 21 Dec 1973 [27 Dec 1972] 59605/73 Headings H3A and H3Q In a signal tracking receiver with a voltage controlled oscillator 2, controlled by a frequency discriminator 4 coupled to the I.F. amplifier 3, a comparison circuit, i.e. resistors 9, 10 forms the difference between the rectified output of the I.F. amplifier 3 and the rectified output of a filter stage 6 coupled in parallel to the input or output of the I.F. stage 3 the filter having a characteristic such that the comparator output represents the signal-to-noise ratio. The filter may cover a band outside that covered by the I.F. stage filter 3 and the comparator output may be digitized to operate an alarm, to warn of incorrect tracking or may be applied to operate an electronic switch 14 interrupting the output from oscillator 2, which is used for measuring the input frequency. In an alternative arrangement filter 6 is of the band-stop type, of the same centre frequency as, but of narrower bandwidth than the I.F. filter 3 (Fig. 3, not shown).
Patent GB-1374784-A (GB)
Title: Devices for grouping objects moved on a conveyor as a single layer sequence
IPC: B65B19/10
Filed: 1971-12-23
Abstract: 1374784 Conveying and grouping cigarettes and other articles SERVICE D'EXPLOITATION INDUSTRIELLE DES TABAC'S ET DES ALLUMETTES 23 Dec 1971 [23 Dec 1970] 59899/71 Heading B8A Articles such as cigarettes or packets of cigarettes being conveyed on an endless belt or roller conveyer are subject to air pressure from a vacuum chamber 6 disposed beneath the conveyer. A tunnel 1 is disposed over the conveyer in and above the central zone of the chamber 6. Suction from the latter acts through perforations in the belt (or gaps between the rollers, in the case of a roller conveyer), and thus causes an air flow 7, 8, respectively from each open end of the tunnel towards its centre. Articles thus tend to be held at the centre of the tunnel by the airflow, against the action of the conveyer, until they built up to such a number that the conveyer acting on their combined surface area, develops a tractive force which exceeds the action of the air flows 7, 8.
Patent GB-1274726-A (GB)
Title: Dielectric isolation in semiconductor bodies
Inventor: KARL BRACK
IPC: H01L21/331
Filed: 1970-12-17
Abstract: 1,274,726. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 17 Dec., 1970 [6 Jan., 1970], No. 59908/70. Heading H1K. A method of forming a dielectrically isolated region in a semi-conductor body comprises bombarding the region with ions of at least one element, and subsequently heating the body to react the implanted ions with ions within the body to produce an isolation area surrounding the region. The body 10, which may be of silicon, is bombarded with ions of oxygen, nitrogen, carbon, or a combination thereof through a mask 12 having apertures 14 with bevelled edges 15 (Step 1). The energies of the ions, e.g. 1 to 3 Mev., produces a region 21 and a surrounding region 22 containing ions to a concentration of 10<SP>18</SP> to 10<SP>22</SP>/c.c., the region 22 being formed by a reduction in the penetration of the body caused by the bevelled mask edge 15 (Step 2). The body is heated, e.g. to 1100 C. for 30 mins, in order that the ions react with the body to form an isolating region 23 of silicon dioxide, silicon nitride, or silicon carbide (Step 3). Within the isolated region 26 may be formed transistors (Step 4) to produce an integrated circuit. The body may alternatively be of GaAs or Ge in which case silicon ions are included in the bombardment. The mask edge 15 may be formed from a mask having four layers, each of 500 to 1000  thickness, each layer being bombarded with inert ions following deposition, the radiation dose increasing with each layer to produce a mask with a controlled, variable, etch rate. A control mask may determine the position of the apertures 14 during etching. The mask may be of gold, silver, molybdenum, tungsten, silicon dioxide or silicon nitride. Alternatively the mask may be pyrolitically deposited silicon oxide having a controlled, variable, etching rate provided by doping with boron or phosphorus. Alternatively the energy of the ions could be varied to produce the region 22 without the need of a bevelled edge mask.
Patent GB-1192530-A (GB)
Title: Improvements in or relating to Power Transmission Apparatus for Motor Vehicles
IPC: F16H3/089
Filed: 1968-12-20
Abstract: 1,192,530. Change-speed gear. HONDA GIJUTSU KENKYUSHO K.K. 20 Dec., 1968 [17 Jan., 1968], No. 60857/68. Heading F2D. In a three-speed and reverse power transmission comprising an engine 1, torque converter 3, change-speed gear 7 and differential gear 16 in a compact unitary assembly, the change-speed gear 7 has parallel driving and driven shafts 5, 6 carrying two spaced pairs of meshing gears 8, 12 and 9, 13, which gears 8 and 9 on the driving shaft are selectively connected thereto, for second and third speed respectively, by two spaced hydraulically operated friction clutches 10, 11 disposed between the driving gears 8, 9, an output gear 15 between the driven gears 12, 13, all three gears being integral with the driven shaft 6, nestling between the clutches 10, 11 and driving the differential gear 16. First and reverse speeds are obtained, on release of both clutches 10, 11, via two further gear trains 25, 24 and 27, 26, 22 resp. selectively engaged by a sliding dog clutch 19, the driven first speed gear 24 incorporating a one-way clutch 23, whereby it freewheels on the output shaft 6 in the higher speeds. The engine crank-case 28 together with the change-speed gear casing 29 and differential casing 30 are formed in a single integral casing split into upper and lower parts.
Patent GB-1204649-A (GB)
Title: Cruciform, kite and parachute aircraft
Inventor: PEDRICK ARTHUR PAUL
IPC: B64C3/10
Filed: 1969-12-23
Abstract: 1,204,649. Variable geometry aircraft; parachutes. A. P. PEDRICK. 23 Dec., 1969, No. 62742/69. Headings B7G and B7W. An aircraft has a cruciform wing and body structure providing four quadrantal areas within which flexible members may be expanded or contracted to vary the " wing " area. The members may be fully extended to act as a parachute under emergency conditions. As shown in Fig. 1, the cruciform members 1, 2 support members of flexible material, e.g. nylon, 5 attached to rubber lines 3 which may be pulled by cables 4 in to any of the positions X, Y, Z. The wings 2 contain members 10 slidable under gravity against a spring 11 to provide stabilization against rolling. A tail member 13 is similarly slidable. The wing and body structure may support a power unit which supports (a) the cabin structure and (b) telescopic wheel structures (Fig. 4, not shown). Fuel may be carried in jettisonable tanks carried between the wheels.
Patent GB-647626-A (GB)
IPC: B25D17/08
Abstract: 647,626. Percussive drills. HYMATIC ENGINEERING CO.. Ltd. Nov. 15, 1948, No. 29583. [Class 124] A bit retainer for a percussive drill comprises a helical spring having one end of reduced diameter .to engage screw thread on the collar of a bit and the other end enlarged to engage a thread on the nose of the tool. As shown, the collar f of a bit e has a thread, which may be of rounded section, which engages with a reduced portion d of a helical spring the other and larger end of which engages a thread on the nose of the tool a. The spring has a loop on the larger end to assist in unscrewing the spring from the nose of the tool.
Patent GB-2001136-A (GB)
Title: Gas turbine jet propulsion engines
IPC: F02K1/46
Filed: 1978-06-29
Abstract: The jet pipe 17 of a gas turbine jet propulsion engine is surrounded by a hollow shaft 30 which defines with the jet pipe an annular flow duct 38. Blades of a turbine 28 carried by the shaft project radially inwardly from the shaft into the duct 38. The shaft also carries two stages of fan rotor blades which project radially outwardly from the shaft into an auxiliary fan duct 20 defined between the shaft and the outer casing 23 of the powerplant. The shaft is mounted for rotation in an air bearing. For reduced noise operations of the powerplant at take-off and landing, flaps 26 are opened to uncover openings in the outer casing to allow air to be drawn through the fan. The fan is driven via shaft 30 from turbine 28 by exhaust gases from the jet pipe which are directed to the turbine through openings 40 when slide valve 42 is opened. <IMAGE>
Patent GB-2004156-A (GB)
Title: Semiconductor devices
IPC: H01L29/792
Filed: 1978-09-18
Abstract: A mode of operation of an array of MNOS memory transistors is provided which employs the punch through mode of erase and enables single transistor memory cells to be used, it being arranged that all 'bits' are written into the '1' state and bits are selectively erased to provide the required data pattern. In the case of P-channel transistors the '1' state is defined as that corresponding to the most negative threshold. <IMAGE>
Patent GB-2006905-A (GB)
Title: Roof Bolt
IPC: E21D21/00
Filed: 1978-09-26
Abstract: A friction roof bolt comprising a generally annular body which from end-to-end has a slot through its thickness. Means is provided for fixing the body in a radially elastically compressed state so as to make possible insertion thereof in a hole 12 of diameter substantially smaller than the normal outer diameter of the body. After such insertion, the body is caused to expand to anchor by frictional engagement with the surrounding wall of the hole 12. The annular body may be held in its compressed state by binding it with wire or glass fibre tape, or bonding or welding a tape along the slot to hold it closed. after insertion in the hole 12, a cutting tool is drawn along the slot by a wire 14 to release the binding or tape. <IMAGE>
Patent GB-2012067-A (GB)
Title: Spectrophotometer
IPC: G01J3/28
Filed: 1978-11-22
Abstract: A spectrophotometer includes a dispersive element 9 and an array 5 of photodetectors 6 arranged to provide output signals proportional to the intensities of the dispersed beams directed onto detectors 6. A lens 8 is arranged between an entrance aperture 3 and the dispersive element 9. The entrance aperture 3 is located at the focal point of lens 8. The lens 8 directs beams received through the entrance aperture 3, as a bundle of parallel beams onto the dispersive element 9. The beam components diffracted by the dispersive element 9 as a function of their respective wavelengths are directed in different directions, onto the photodetectors 6 associated with respective specific wavelengths. <IMAGE>
Patent GB-2016142-A (GB)
Title: Apparatus for detecting the presence of a specific substance in a gas stream
IPC: G01N21/77
Filed: 1979-03-06
Abstract: Apparatus for detecting the presence of a specific substance in a gas stream comprises a sensing chamber (10) receiving a test paper (16) which is subject to colouration when contacted by a specific substance in a gas in the chamber (10), means (24,26,28,30,32, 34) generating a light beam and directing it toward the test paper (16) in the chamber (10), a light beam sensing device (42) responsive to the extent to which the test paper in the chamber undergoes colouration in response to exposure to the specific substance, an amplifier (48) connected to the device (42) and providing an output voltage proportional to the colouration of the test paper, and differentiator (56) and non-linearity compensation means (60) connected to the amplifier (48) for providing an output signal which is an instantaneous indication of the concentration of the specific substance. A beam splitter (34) divides the light beam into two separate beams, one directed toward the test paper (16) in the chamber (10) and the other toward a variable optical density filter (36). A second light beam sensing device (46) is responsive to the transmittance of the filter (36). The amplifier (48) is responsive to the two light beam sensing devices (42, 46) for providing an output which is a function of the ratio of the light sensed by the devices (42, 46) irrespective of light source intensity variations. Before each measurement, zeroing is performed via reset amplifier 50 controlling the position of filter 36. <IMAGE>
Patent GB-2017915-A (GB)
Title: Liquid level indicators
IPC: G01F23/296
Filed: 1979-03-20
Abstract: A liquid level indicator, for example a tide gauge, uses a pulsed sonar transmitter 1 and receiver 3, the delay time between transmitting a pulse and receiving its echo reflected from the surface of the liquid is measured by an oscillator 9 which feeds a counter 8. The count in the counter during the delay time is displayed. Oscillator 9 may be temperature-controlled to compensate for ambient temperature changes. <IMAGE>
Patent GB-2028082-A (GB)
Title: Containers for mushroom cultivation
IPC: A01G1/04
Filed: 1979-08-14
Abstract: In the fungus bed cultivation of mushrooms, the effect of bacteria and microbes infectious to mushroom cultivation is prevented by the use of a vessel comprising a container and cover therefor, characterised in that when the vessel is in the closed condition, air can pass into the vessel only through a porous plastics film material which is permeable to gas but which is impermeable to such bacteria and microbes. In one embodiment the container of the vessel is provided with an aperture in a wall thereof which has a sheet of the said plastics film material attached thereon to cover the aperture, and in another embodiment the cover of the vessel is provided with an aperture and there is also provided an element of the porous plastics film adapted to cover the aperture. The said element may be mounted on the cover or separate from the said cover and may be disposed between the cover and the container when the vessel is in the closed position, e.g. the element may be mounted on an annular support. The vessel used in the mushroom cultivation may be a bottle, for instance made of air-impermeable plastics material, and the cover may be a screw on cap for the bottle. <IMAGE>
Patent GB-2033649-A (GB)
Title: Laser device
IPC: B23K26/08
Filed: 1979-10-25
Abstract: A laser beam produced by a light source 13 is conducted by a light conductor 11 to an irradiation point for use in a surgical operation or the cutting, drilling or welding of a material, for example. The conductor 11 comprises a section 14 formed by two telescopically engaged tubular parts 14a, 14b which can be expanded and contracted, a bend section 15 including a mirror M which reflects the laser beam through a predetermined angle, a flexible section 18 whose internal surface is reflective, and a beam focussing section 12. The expandability and contractability of the section 14 combined with the flexibility of the section 18 give the device good manoeuverability, which can be further improved by making a flange connection 16 between the sections 14 and 15 and/or a flange connection 17 between the sections 15 and 18 rotatable to enable swivelling movement to be effected between those sections. <IMAGE>