baber/WOPTO huggingface dataset:
Patent GB-1248082-A (GB)
Title: Method of and apparatus for continously laying railway track
IPC: E01B29/00
Filed: 1968-12-19
Abstract: 1,248,082. Laying railway track. F. PLASSER. 19 Dec., 1968 [29 Dec., 1967], No. 60338/68. Heading E1G.  - A continuously-advancing track-laying train comprising equipment 12 for welding together and then laying new rail lengths 10 on to sleepers 15 includes one or more stages of heating or cooling means 17, 17' for bringing the rails to a temperature approximating to the mean of the expected extreme weather temperatures. The apparatus shown comprises a front train 2 ..5 running on the old track and carrying the new rails 10 and old sleepers, a rear train 6 .. 9 running on the new track and carrying the oil rails 11, the apparatus operating as in Specification 1,237,437. The rear train is followed by a ballast receptacle 19 and compactor 18. Where there is no old track. Fig. 5 (not shown), the front train comprises crawler vehicles (21) running on  the ballast; this particular train incorporates four heating or cooling stages (17) and also includes a device (22) running on the new track for blowing hot or cold air on a new rail 10 immediately before it is laid and fastened. Means may be provided for continuing the heating for a short time after the rails have been laid and for cooling or heating the rail lengths before the welding equipment 12. The means 17 may comprise heating or cooling coils for gas, liquid or electricity. In modifications the rails are directly heated by burners or by gas or liquid jets, Fig. 8 (not shown), or resistance-heated by sliding electric contacts, Figs. 3, 9 (not shown). Cooling may be effected by air and carbon dioxide snow.
Patent GB-1270180-A (GB)
Title: Production of phosphates
IPC: C01B25/40
Filed: 1969-12-23
Abstract: 1,270,180. Alkali metal or ammonium phosphates. HOOKER CHEMICAL CORP. 23 Dec., 1969 [31 Dec., 1968], No. 62620/69. Heading C1A. Alkali metal or ammonium phosphates are prepared by treating wet process phosphoric acid with iron powder having a particle size not greater than 60 mesh (U.S. Standard) in an amount of from 0À1 to 2À0% by weight of the phosphoric acid, neutralizing the treated phosphoric acid with an alkali metal hydroxide or carbonate, ammonium hydroxide or carbonate, or gaseous ammonia at a temperature of from 90 to 110 C. to form a slurry having a pH of from 3À5 to 9, filtering the neutralized phosphoric acid slurry and recovering the phosphate product from the filtrate with the proviso that the neutralization is effected in ebullient reaction medium when the basic reactant is hydroxyl-containing and the pH to be attained is less than 7À5. The phosphoric acid is preferably treated with the iron powder for a period of from 5 to 60 minutes at 40 to 120 C. The basic material may be impure sodium hydroxide obtained from the catholyte compartment of a chlor-alkali electrolytic cell. The phosphatic product may be separated from the filtrate by recrystallization.
Patent GB-691997-A (GB)
Abstract: 691,997. Moulding hollow rubber articles. FREEMAN, W. S. Feb. 7, 1952 [April 4, 1951; Aug. 16, 1951], Nos. 7790/51 and 19394/51. Class 87 (ii). A method of manufacturing hollow rubber articles comprises the following steps:-(a) laying two sheets of unvulcanized rubber 11, 12, face to face, with portions 14 of their surfaces in contact with each other, and with the remaining portions separated by one or more sheets 13 of paper cardboard, chemically-treated canvas or other textile the separating sheet being formed or provided around its edges with a hem, housing a metal wire or fibre cord 16 thus creating on vulcanization, an internal groove along the length of the inner margin of the junction 14. (b) Placing the assembly in a mould. (c) Vulcanizing the assembly under pressure.
Patent GB-763905-A (GB)
IPC: H04M15/10
Abstract: 763,905. Counting-apparatus. ELMEG ELEKTRO-MECHANIK GES. Jan. 12, 1955 [Jan. 13, 1954], No. 978/55. Class 106 (1). ). [Also in Group XXIV] In an electromagnetic step-by-step mechanism for use in a counter-mechanism the armature 4 of an electromagnet 1 is moved on energization of the latter to tension a spring 10 so that on de-energization of the electromagnet the armature is returned to actuate a wheel 7 through a pawl 8. The spring 10 shown is a leaf spring and co-operates with an abutment-piece 11 which is shaped so that the effective length of the spring is varied over the armature stroke to enable the force stored in the spring to be substantially equal to the electromagnetic force in any position of the armature. In one modification a looped leaf spring is employed, one end being secured to the armature and the other curved end rolling on a cheek of the electromagnet. In another modification a conical coil spring is used which is subjected to a central pull from the armature.
Patent GB-2026587-A (GB)
Title: Cylinder locks
IPC: E05B29/00
Filed: 1978-07-26
Abstract: In order to provide additional security in tumbler locks means are provided which cooperate with an incorrect key or other implement inserted in the key slot to avoid or at least delay the attainment of all the tumblers of their positions in which the lock can be opened. In one embodiment (Figs 1 and 2) a tumbler (59) can thus be moved into an overlift position in which a portion (61) of the tumbler is located and retained in a second slot (56) in the housing (51). In a further embodiment (Figs 3 and 4) a step (20) is provided in the key slot (16). <IMAGE>
Patent GB-2005856-A (GB)
Title: Electrochromic device
IPC: C09K9/00
Filed: 1978-09-08
Abstract: In an eloctrochromic device of the kind comprising a layer of persistent electrochromic material (for example WO3) and an electrolyte layer sandwiched between a pair of electrodes, the electrolyte layer is a polymeric electrolyte deposited on the electrochromic layer by evaporation of a solution thereof. The electrolyte may be polystyrene or polyethylene sulphonic acid, perfluorosulphonic acid, or other ion exchange resins containing specified strong or weak acid or base groups. The disclosed related prior art also refers to devices in which conduction occurs via gelled electrolytes or thin plastics layers.
Patent GB-2010122-A (GB)
Title: Coated implant
IPC: A61L27/30
Filed: 1978-10-05
Abstract: Coated implant of metals, metal alloys, synthetic plastics material, ceramics and/or other substances, characterised in that an implant is provided with a coating system which consists of a passivating coating and/or several physiologically active coatings, or is provided with a passivating, physiologically active coating, the physiologically active coatings being composed of organic constituents of identical nature.
Patent GB-2034470-A (GB)
Title: Level detector for free-flowing and viscous materials
IPC: G01F23/296
Filed: 1978-11-13
Abstract: In a level detector a mechanical oscillation system (1) is periodically excited by short pulses from an impact oscillator (2). Free oscillations are amplified in an amplifier (3) and an indication is produced by an indicating device (4) if the amplitude exceeds a certain threshold.The amplified signals are clipped in a voltage limiter (5) and differentiated in a network (6) to produce pulses which synchronise the impact oscillator (2) with the natural oscillations of the mechanical oscillation <IMAGE>
Patent GB-2011532-A (GB)
Title: Measuring apparatus for injection pumps
IPC: F02M65/00
Filed: 1978-11-29
Abstract: An apparatus for measuring the injection rate of injection pumps in which the fuel delivered through the nozzles supplied by the pumps is conveyed through a control device (11, 12, 13) to an indicating apparatus (36, 37, 41), the control device having positions corresponding to the combined delivery from a plurality of nozzles and from any individual nozzle. The control device includes a control slide (13) which is axially displaceable and rotatable to provide the necessary positions. After a predetermined number of pump strokes the control slide (13) is rotated electromagnetically (50-54) in such a manner that the fuel subsequently delivered by the injection pump flows to a reservoir (20).
Patent GB-2014001-A (GB)
Title: Circuits for dimming discharge lamps
IPC: H05B41/42
Filed: 1979-02-01
Abstract: A circuit for dimming a high pressure discharge lamp 1 comprises a series impedance which is changeable by a switch 5 having contacts 2, and a further impedance R1 or R2 connected in parallel with the switch contacts to maintain the lamp current during switching. In the shown position of the switch, only a choke 3 is in series with the lamp which is at full brightness. When the relay 5 changes over the contacts 2, the lamp is dimmed since it is connected in series with the choke 3 and the parallel circuit of a choke 4 and the resistor R1. The switching system may also be used when the series impedance comprises a tapped choke. <IMAGE>
Patent GB-2016752-A (GB)
Title: Data Processing Apparatus
IPC: G06F12/0886
Filed: 1979-02-12
Abstract: Improved processor performance when dealing with variable field length operands is achieved by incorporating a fetching mechanism A9 which can operate in an overlapped mode with the instruction execution unit EF. Further improvement is provided by aligning operands within the fetching mechanism A13 and also, when a cache is incorporated, by incorporating a cache by-pass data transfer path by which, in the case of a cache miss, simultaneous transfer of requested items can proceed to both the cache and the operand fetch mechanism starting with the specific item sought. The operand fetch mechanism includes a plurality of operand-address pairs of registers, and a wrap-around shifter. When an instruction specifying a variable length field operand is decoded a set of empty register pairs, corresponding in number to the operand length, is formed into a string by means of pointers and the starting address of the operand is inserted into the address register of the first register pair of the string. Progressively incremented addresses are entered into the remaining register pairs, the amount of the increment being the unit of transfer. A separate mechanism A9 responds to the address to fetch the corresponding operand segments entering the same into the corresponding other registers of the pairs. A further mechanism responds to the execution unit to transfer the operand segments in string order from the register pairs to the execution unit. Where source and destination operands are specified two strings are established and where alignment is required transfer into the register pairs from storage is by way of a "by byte" wrap around shifter so that the register pairs of the string (save for the last perhaps) are packed and contain only operand segments. <IMAGE>
Patent GB-2016931-A (GB)
Title: Toothpicks
IPC: A61C15/02
Filed: 1979-03-22
Abstract: A toothpick with a tapering end, the tapered part being provided with a screw thread. <IMAGE>
Patent GB-2018287-A (GB)
Title: Process for the concentration of biomasses
IPC: C12N13/00
Filed: 1979-04-06
Abstract: In fermentation processes the mass of micro-organisms present, the biomass, is concentrated by coagulation of the solids of the fermentation suspension by the action of an electric current having a frequency of from 0 to 2000 Hz, up to a current density of 10 mA/cm<2>, at a temperature of from 20 to 100 DEG C.
Patent GB-2025575-A (GB)
Title: Pressure compensating valve
IPC: F16K17/19
Filed: 1979-04-26
Abstract: A sealable compartment, such as a refrigerating compartment, includes a valve to compensate for air pressure differences due to varying temperatures for example. The valve comprises a relatively light spherical body (4) such as a table tennis ball, resting on a valve seat (3). A stop, for example defined by the wall of a tube (1) opposite the body (4) limits movement of the body away from the valve seat. A pair, or two groups, of valves may be provided to permit pressure compensating flow in both directions, Figures 6 to 8 (not shown). An associated heater keeps the valve free from ice. <IMAGE>
Patent GB-2021556-A (GB)
Title: Method of Processing Glass Tubing
IPC: H01J61/42
Filed: 1979-05-29
Abstract: The alkali content of the inner surface of glass tubing is reduced by introducing an acidic gas into the glass tubing at the hot draw stage to react with alkali ions on the inner surface of the glass and form a water- soluble salt, which may subsequently be removed by washing. The glass tubing (6) is drawn from a tank (1) containing molten glass (2) and forms a bag stage (4) within which is located a mandrel (3). A delivery tube (11) passes through the mandrel and serves to introduce the acidic gas into the bag (4). The gas may be SO2, HCl or NO. <IMAGE>
Patent GB-2023349-A (GB)
Title: Protective housings
IPC: H05K5/00
Filed: 1979-06-14
Abstract: A protective housing is provided for an electronic device whose electrical and electronic components are mounted on at least one rectangular circuit board. The housing comprises a hollow cylinder 1 with disc-shaped plates 2, 2' at its ends. Sockets 3a-3f for signal inputs and outputs are screwed into the plates 2, 2'. Such housings, complete with the electronic devices, may be integrated into cable connections. <IMAGE>
Patent GB-2038653-A (GB)
Title: Dressing Slurries
IPC: B03B9/00
Filed: 1979-06-25
Abstract: A method of dressing slurries, more particularly coal slurries, comprises mixing the slurry with selectively acting additive (e.g. oil, oil/water emulsion) and feeding the mixture to a separating apparatus (5) for the purpose of separation into a predominantly solid phase (21) and a predominately liquid phase (22). Homogeneous mixing of the slurry with the additive is undertaken by the separating apparatus. A device for performing the method comprises the separating apparatus (5), a pump (3) for feeding slurry in a container (1) along pipes (2, 4) to the separating apparatus (5), a container (6) for the additive and a mixing element (9) in the pipe line (4). The container (6) is connected to the mixing element (9) by a supply line (7) containing a flow control valve (8). An emulsifier may be provided for emulsifying the additive. <IMAGE>
Patent GB-2025972-A (GB)
Title: 20-methyl-13, 14-didehydro- PGl2 derivatives and process for their preparation
IPC: C07C405/00
Filed: 1979-07-20
Abstract: 20-Methyl-13, 14-didehydro- PGl2 derivatives of formula:   <IMAGE> where R is hydrogen or methyl and M is hydrogen or a pharmaceutically acceptable cation have a greater effect than PGl2 or 20-methyl-PGl2 in disaggregating platelets in the bloodstream and in vasodilating action. They can be prepared by dehydrohalogenation of dihalo compounds of formula (II> <IMAGE> where R and M have the meanings given above and X1 and X2 are independently bromine, chlorine or iodine. A sodium or potassium alkoxide is the preferred dehydrohalogenating agent.
Patent GB-2033497-A (GB)
Title: Seals
IPC: F16J15/32
Filed: 1979-08-23
Abstract: An O-ring seal, washer or gasket is formed with an inner core 10 of elastomeric material and an outer layer 11 of softer elastomeric material, to accommodate, for a given contact stress, greater surface asperities and/or greater relative movement of surfaces to be sealed than would an O-ring, washer or gasket of uniform material. In another embodiment an elastomeric washer is provided on each main face with a washer of softer elastomeric material. <IMAGE>
Patent GB-2034562-A (GB)
Title: Tramlining device
IPC: A01C7/08
Filed: 1979-09-26
Abstract: A tramlining device is provided for a seed drill having shutters 30 associated with respective seed spouts 24 and controlled by individual fluid pressure operated actuators 38 for improved flexibility in selecting the tramline spacing. The actuators are preferably such that when pressurized they close the shutters to produce tramlines although the reverse arrangement is shown. Fluid pressure is tapped from the rams that force the coulters into work. Preferably, a control valve 37 in the fluid supply line 68, 43 comprises a valve member 70, that is urged closed by the supply pressure but is opened by a plunger 51 controlled by bout registering means 49. Preferably, a solenoid operated device is provided to override operation of the bout registering means. <IMAGE>
Patent GB-2037140-A (GB)
Title: Programmable pet feeding appliance
IPC: A01K5/02
Filed: 1979-10-02
Abstract: The appliance comprises a compartmented member (1) rotatable about a vertical shaft (5) and a lid (9) to cover the compartments except at one radial position at which a meal contained in a compartment is presented to the pet. The member (1) is rotated under control of a conventional timer and programmer contained in the casing (6) to bring each compartment in turn to the feed station at predetermined intervals, say 24 hours. Beneath member 1 are refrigeration coils (7) to refrigerate a compartment when not at the feed station, and heating resistors (8) which heat a compartment as it is being displaced to the feed station. <IMAGE>
Patent GB-2034776-A (GB)
Title: Yarn Making Process
IPC: D02G3/36
Filed: 1979-10-12
Abstract: In a process for making a yarn of cotton, or of man-made fibres having fibre lengths in the cotton range, a roving of the cotton or other fibre is twisted with a thin fixing thread or filament in a direction opposite to the twist of the roving, which initially has a low degree of twist. The twisting of the roving and the thread or filament is performed in such manner that the roving is completely untwisted and is given a twist in the direction opposite to its initial twist.
Patent GB-2038031-A (GB)
Title: Article sorting apparatus
IPC: B07B13/00
Filed: 1979-11-06
Abstract: In apparatus for sorting potatoes a roller table conveyor 4 conveys potatoes beneath a television camera 30 which produces on a monitor 25 a picture of an inspection area 4b of the roller table. An operator watching the monitor 25 selects potatoes to be rejected by pointing a light pen 27 at the monitor screen. The light pen 27 feeds to control means 5 a signal indicative of the light pen position on the screen, which corresponds to a transient position of the potato in the inspection area. Sensor means 45 feeds to control means 5 a signal dependent upon the conveyor speed, and the control means 5 actuates selectively a bank of deflector fingers 6 to deflect reject potatoes. The choice of defector members actuated is determined by one orthogonal co- ordinate of the light pen, and the timing of actuation of the deflector members 6 is determined by the other orthogonal co-ordinate of the light pen and the speed of the conveyor means. <IMAGE>
Patent GB-2037398-A (GB)
Title: Vibration proof bushed mounting
IPC: F16F1/387
Filed: 1979-11-07
Abstract: A bushed mounting comprises co-axially disposed inner and outer tubes 11, 12, a bush 13 of resilient material and of hollow cylindrical shape adapted to be disposed between the inner and outer tubes, and having an annular groove 14 formed in each axial end surface. <IMAGE>
Patent GB-2041948-A (GB)
Title: Expansible Rubber/Resin Blend and Foam Produced Therefrom
IPC: C08J9/00
Filed: 1980-01-28
Abstract: An expansible resin/rubber blend suitable for the manufacture of a chemically blown, predominantly closed cell form with a density in the range of about 1.8-4 pounds/cu. ft. (28.8864 Kg/cm<3>), comprises (1) 100 parts of butadiene-acrylonitrile rubber, (2) 40-200 parts of vinyl chloride resin, and (3) 25-200 parts of polymethylmethacrylate.
Patent GB-2046064-A (GB)
Title: A Method for use of a Centrifugal Spreader and a Centrifugal Spreader for Performing the Method
IPC: A01C17/00
Filed: 1980-03-07
Abstract: A centrifugal spreader has a storage container (14) and at least one driven spreading disc (15) situated at a height of at least 0.5 m from the ground. The spreader also has means for varying an upwardly inclined discharge angle (???) at which fertiliser particles are propelled from the spreading device (s) over the entire discharge range thereof to suit different crop conditions. The upwardly inclined discharge angle can be adjusted up to at least a value of + 15 DEG relative to the ground surface. Compensating change in the effective width of the spreader is achieved by changing the orientation of throwing elements 22 on the spreader disc. <IMAGE>
Patent GB-2072510-A (GB)
Title: Stoma cover
IPC: A61F5/441
Filed: 1980-04-01
Abstract: A patient who has been subjected to surgery such as colostomy has an end, called a stoma, of the intestine projecting from his body, usually from his abdomen. Often a colostomy bag for receiving waste material is attached to the patient's body surrounding the stoma. When the user does not need to wear the bag, some form of protective cover over the otherwise exposed stoma is highly desirable. A stoma cover is constructed with a coupling 14 whereby it can be secured to a surgical pad or dressing and an envelope 18 carried by the coupling and containing a fibrous pad 24 in juxtaposition with a gas-absorbent material 26. <IMAGE>
Patent GB-2047887-A (GB)
Title: Extrudate Thickness Measurement by X-ray Absorption
IPC: G01N23/083
Filed: 1980-04-15
Abstract: Continuous measurement of the thickness of extruded synthetic resin profile sections 4 is made by determining the degree of absorption of X-rays upon penetration through the extruded synthetic resin profile sections, wherein, for a weight per unit area in the range of from 4,000 to 14,000 g/m<2>, there are used X-rays with energy of from 20 to 40 keV. A device for carrying out this method comprises a screened radiation source 1 and a counter 6, the radiation source emitting X-rays having a photon energy of from 20 to 40 keV, said X-rays being generated by a radionuclide, e.g. Am 241, acting as primary emitter, by means of a target from an element having an atomic number of from 40 to 60, e.g. Rb, Ag, Mo, Ba. Other target materials are Cu and Tb. <IMAGE>
Patent GB-2079427-A (GB)
Title: Method of liquefying freon gas
IPC: F25J1/00
Filed: 1980-07-02
Abstract: In a method of liquefying Freon gas, liquefied cooling gas such as nitrogen 7 is disposed in a space 6 between inner and outer tanks 4, 2, a heat exchange medium such as helium is disposed in a space 8 formed in the wall of tank 4, and freon gas is passed into tank 4, where it is liquefied and stored, being prevented from solidifying by agitation from agitator 24. <IMAGE>
Patent GB-2051715-A (GB)
Title: Improvements in and relating to tractors
IPC: B62D49/06
Filed: 1980-07-08
Abstract: A cheap four-wheeled tractor particularly for use in wet paddy cultivation has a drive from the engine to the front wheels. Each front wheel 14 is driven independently through an individually variable drive 81,82,83 and the engine and front drive wheels are mounted on a front part of the body which is articulated relative a rear part on which rear wheels 16 are mounted. In this way, a form of power-steering is provided and the heavy parts of the tractor are mounted over the front wheels so that there is good traction. In order to increase the weight on the front wheels, a free link hitch 190 to which a plough 192 or the like is to be attached is fitted to the rear part and the reaction from that hitch is used to increase the weight on the front driving wheels. This is achieved when the links 194,196 of the hitch are arranged so that lines drawn along an extension of the upper and lower links when in the cultivation position meet at a point below ground level in front of the drive wheels 14. <IMAGE>
Patent GB-2088211-A (GB)
Title: Preservation of timber
IPC: B27K3/34
Filed: 1980-08-18
Abstract: A carrier consisting of ethylene glycol, or another hygroscopic glycol, or another hygroscopic liquid in a composition containing a protective agent to be introduced into a porous substrate such as timber, particularly a boron-rich compound (at least 25% of B2O3, preferably at least 35% of B2O3). For penetration into wood as a preservative suppressing or preventing insecticidal or fungal attack, the glycol carrier penetrating the outer portion of the wood more quickly than an aqueous carrier.