baber/WOPTO huggingface dataset:
Patent GB-1493457-A (GB)
Title: Bar and strip shears
IPC: B23D23/00
Filed: 1975-06-18
Abstract: 1493457 Shearing; punching J DVORAK 18 June 1975 [6 Sept 1974] 25869/75 Heading B3W A bar or strip shear has a fixed plate 14 and a movable plate 17 with registrable work-receiving notches 55, 58 respectively, the plate 17 being movable to shear a workpiece located in the notches by pivoting a shaft 24 rigid with and mounted eccentrically on a disc 21, rotatable in an opening 20 in the plate 17, and extending through the side plate 14. There may as shown, Fig. 5, be a second fixed plate 15, Fig. 5, and two, or more, discs 21, shafts 23, 24 extending through plates 14, 15, and being pivoted via pairs of links 27, 29 and 30 by a fluid cylinder 35. A lever 41, pivoted to the cylinder and the plates 14, 15 at 44 and 42 respectively is linked to the lower edge of plate 17 at 45. A spring 51 returns the lever 41 to the rest position shown in full line, Fig. 1. A blade 59 on the upper edge of the notch 58 cooperates with a blade 61 on the lower edge of the notch 55 to shear a workpiece when the cylinder 35 is actuated to raise the links 30 to the broken line position, Fig. 1. The cylinder 35 is double-acting, or a return spring 75 is provided. For punching, Fig. 6, a support 69 is pivoted to the plates 14, 15 at 70 and has a bolt passing through the plate 17 and slots 72 in the plates 14, 15. Movement of the plate 17 moves a punch 73 to co-operate with a die mounted on a support 82 bolted to a U-shaped adaptor 80 itself bolted to the plates 14, 15.
Patent GB-1045261-A (GB)
Title: Improvements in or relating to the control of nuclear reactors
Inventor: CAWTHRA FRANK
IPC: G21C7/36
Filed: 1961-07-17
Abstract: 1,045,261. Controlling reactors. ATOMIC POWER CONSTRUCTIONS Ltd. Oct. 15, 1962 [July 17, 1961], No. 25899/61. Heading G6C. A method of regulating the reactivity of a nuclear reactor comprises monitoring coolant gas outlet temperature, comparing that temperature with a standard temperature and deriving an electric signal representing the difference between the two temperatures, mixing the temperature error signal with an alternating signal, and adjusting the position of the reactor control rods in accordance with the magnitude and polarity of the resultant signal when the magnitude of the latter exceeds a minimum value. As shown in Fig. 1c the error signal E may be added to a triangular waveform and fed to an actuator having a threshold so that the actuator only responds in the part of the cycle shown shaded, the rest of the cycle lying within the dead-band. Thus the response of the actuator is proportional to the magnitude and sign of E although E itself lies within the dead-band and is insufficient to operate the actuator. The peak-to-peak amplitude of the waveform is not greater than the width of the dead-band and is preferably less by an amount sufficient to ensure that random fluctuations do not affect the control system. The circuit shown in Fig. 2 represents the control system for one of nine sectors into which the reactor is divided for control purposes. Each sector is divided into four regions each provided with four thermocouples connected to a region amplifier 3. In the amplifier 3 the outputs of three of the thermocouples are connected in series, the fourth thermocouple being spare, and compared with a datum voltage representing the desired output temperature. The outputs of the four amplifiers 3 (of which only one is shown), are fed to a sector amplifier 5 which produces an output proportional to the average of three of the inputs, the fourth input being spare. The output of unit 5 is mixed in unit 6 with a triangular wave produced by unit 7, and the resultant passed to actuator 8 which produces " raise," " hold " or " lower " control signals when its input is above, within or below the dead-band; these control signals pass to a relay unit 9 controlling the motor 10. A threephase generator 11 is driven by motor 10 through gearing 12 and its output drives the control rod motor 13. In a modification, gainswitching circuits are provided to modify the overall gain of the system and two motors 10 are used, one of high speed for use with the highgain system and one of low speed for the lowgain system. Selection of the motor 10 is by a modified relay circuit 9 governed by a signal from the gain-switching circuit, and each motor 10 drives the same generator 11.
Patent GB-795502-A (GB)
Title: An extensible straight line belt conveyor system
IPC: B65G21/14
Filed: 1956-08-24
Abstract: 795,502. Endless-belt conveyers. PITTSBURGH CONSOLIDATION COAL CO. Aug. 24, 1956 [Sept. 1, 1955], No. 25928/56. Class 78 (1). An extensible endless-belt conveyer 11, Fig. 1, for use in mining operations is supported by a long ribbon 16 of stainless steel, aluminium or other material of high tensile strength which can be unwound from a spool 12 and maintained in tension. The ribbon 16 is supported by troughed idler rollers 29 arranged between pairs of jacks 28 and its free end is secured to the end section 17, Fig. 2, of the system by a clamp 21. The section 17 may have troughed idler rollers for supporting the belt or a troughed metal sheet may be provided for this purpose. The section 17 is moved by connecting any hauling device, e.g. a self-propelled machine, or a winch, to a draw-bar 27 after the conveyer belt has been broken at an existing splice. The end sections may be mounted on wheels, or endless tracks, and may have means for anchoring them to the ceiling and floor of the mine working. Each run of the conveyer may be supported by a ribbon of stainless steel. Pawl-and-ratchet mechanism may be provided to prevent rotation of the spool 12 in unwinding direction during operation of the conveyer. In the construction shown in Figs. 10 and 11, the lower ribbon 105 is wider than the upper one 103 and supports it. The two ribbons are secured at their edges by clamps 113. The end of each clamp handle 114 may be inserted in a socket 123 formed at the upper end of a supporting pin 121. The pointed ends of the pins are inserted into the floor of the mine and provide positive lateral support for the system. The edges of the ribbons are formed with transverse ridges 110, 111, Fig. 13, separated by longitudinal ridges 112.
Patent GB-939077-A (GB)
Title: Improvements relating to the lubrication of internal combustion engines and the like
Inventor: KNIGHT FRANK
IPC: F01M1/08
Filed: 1961-07-18
Abstract: 939,077. Lubricators. LOXHAMS ENGINEERING WORKS Ltd. July 13, 1962 [July 18, 1961], No. 25936/61. Class 12 (3). In a lubrication system, a quill for forcing lubricant into a cylinder of an engine at intervals, has an outlet-valve biased to the open position by pressure in the engine cylinder and a check-valve located at the entrance to the quill. Working pressure is built up between the valves and, when this pressure is increased during the feed-phase of an oil-pump cycle, both valves open and a volume of oil passes through the outlet-valve while an equivalent volume of oil is received through the check-valve. In an embodiment, a quill 4 is mounted in walls 1, 2 of an engine cylinder, a water-space 3 is defined between said walls and seals 7, 9 are provided. The quill 4 is bored at 10 to receive a cartridge 11, which is retained by a nut 12 and is connected at one end thereof to a supply conduit 13. The cartridge is bored at 16 to receive a valve-housing 17, having a valve-outlet 18 therein. A valve-needle 19, having a conicalshaped head 19b and a portion 19a of increased diameter, is mounted in the housing 17. The needle 19 is urged by a spring 20 so that its head 19b engages a seating on the housing 17. The movement of the valve 19 is limited by an interchangeable pad 22 which is abutted by a seal 23. In use, gas from the engine cylinder tends to open the valve-outlet 18 and pressurized oil is supplied from the conduit 13, along axial and radial bores 24-26 in the cartridge 11, through ports 27, 28 in the cartridge 11 and housing 17, respectively and into an annular space between the needle 19 and the wall of the housing 17, so as to urge against the stepped portion of the needle 19. When the pressure in the annular space is sufficient, the valve 18 opens, conduits 29, 30 being provided in the cartridge 11 to permit movement of air behind the needle. In a modification, the needle 19 abuts a hollow end 31a of a control-rod 31, the other end of which is urged by a spring 32, the amount of compression of which is adjustable by a nut 33. The movement of the needle 19 is limited by a ported-plug 34, which abuts a shoulder 31b on the rod 31. In use, oil enters a conduit 35, flows past a check-valve 36, along an axial-groove 37 to radial-ports 38 in a cartridge 39 and into the annular space between the needle 19 and the wall of the housing. Specification 939,078 is referred to.
Patent GB-245548-A (GB)
Title: Improvements in doll head bearings for drying cylinders
IPC: D21F5/02
Filed: 1924-10-31
Abstract: 245,548. Bullen, S. C. Oct. 31, 1924. Stuffing-boxes, substitutes for. - A steam - tight joint is maintained between the doll-head and the trunnion of a drying cylinder by a spring-pressed ring E' which is clamped by a ring E2 to a diaphragm D. The trunnion and the ring E<1> may move laterally relatively to each other. In a modification, the rings are screwed on to an independent shank.
Patent GB-916306-A (GB)
Title: Dry gas meter
IPC: G01F3/22
Filed: 1961-07-18
Abstract: 916,306. Gas meters. SPAGNO, U. July 18, 1961 [Aug. 5, 1960], No. 25950/61. Class 54. As dry gas meter has a single-piece unit 7 comprising the diaphragm pans 8, 9, the slide valve 19, 20 and the outlet conduit 18 and interfitting connections between the unit and the top cover 2 and bottom box 1 and between the outlet conduit 18 and main outlet 6 in the top cover ensure that assembly of the unit 7 with the cover 2 and box 1 correctly positions the unit and makes the outlet connection. Side projections 29, 30 of rectangular or circular section engage with ledges 3, 4 in the flanges of the cover and box and an ear 31 engages loosely between wings 32, 33 in the bottom of the box; resilient electrically-insulating gaskets are provided at these points. A telescoping or flanged joint between the outlet 6 and 18 is provided with a gasket 38 and a gasket is provided in a channel in the flange of the box. The parts may be cast in light alloy or be diecast and may be made of synthetic resin. The crank-shaft 25 may be fitted below the valves or occupy a higher position 25<SP>1</SP>.
Patent GB-1494982-A (GB)
Title: Electrically driven apparatus for operating a railway points
IPC: B61L5/06
Filed: 1976-06-22
Abstract: 1494982 Electrically driven points operating mechanism HOOGOVENS IJMUIDEN BV 22 June 1976 [30 June 1975] 25955/76 Heading B7N In an electrically driven points operating mechanism the slidable points operating member is spring biased into each of its extreme positions. Points operating slide 102 is coupled by pin 112 to one end of an L-shaped switch lever 106 which is pivoted at 105 and provided at its other end with a large aperture 114 in which a drive roller 115 is disposed. The roller is secured to the head 116 of a threaded spindle 117 which is driven in the direction of its length by a nut which in turn is driven by a toothed belt 119 from D.C. electric motor 121. The L- shaped lever and hence the slide are biased towards their external positions by a spring toggle mechanism 103. Switches 124, 125 operated by switch bar 123 coupled to the points blades provide an indication when the points is in its operated positions and switches 129, 130 are provided to detect when the spindle 117 is in its mid position. When the points have to be changed the motor 121 is driven in the required direction thereby pivoting lever 106 via the threaded spindle to move the slide and hence the points to the required position. In this position the blade which engages a stock rail is resiliently held by the action of the toggle mechanism 103 and the relevant points switch 124, 125 is operated and acts to energize the motor in the reverse sense via a load resistor, thus at a lower speed the spindle is moved towards its mid position. When it reaches this position switch 129 or 130 is operated to stop the motor with the drive roller 115 disposed in the middle, of aperture 114. This allows the points to be forced into its opposite position by an unauthorized vehicle movement without damaging the mechanism although the resulting change in the points position switch sets the apparatus so that subsequent use is prevented. Crank 122 allows emergency operation of the apparatus by hand.
Patent GB-755822-A (GB)
Title: Machines for the production of finely divided mixtures
IPC: B02C7/08
Filed: 1950-10-25
Abstract: Apparatus of the colloid mill type, for the production of emulsions, dispersions, or suspensions, comprises relatively rotatable members 1, 2, Fig. 4, between which the material flows from hopper 3 to outlet 10; a preliminary treatment is effected by <PICT:0755822/III/1> <PICT:0755822/III/2> blades 4, 5 arranged alternately on the two members in concentric circles, and the material then passes through narrow annular homogenizing gap 6 to rolling chamber 9, in the lower part of which teeth 7, 8 are provided; coarse material circulates in the rolling chamber to form small particles of uniform size.  In an alternative construction, Fig. 6, the preliminary system comprises blades 61, teeth 62, and cylindrical bores 64 which also function as rolling chambers; teeth 71, 72 are additionally provided before the homogenizing gap 8 and the tooth and chamber system 91, 92, 94.  In the apparatus shown, the member 1 rotates and the member 2 is stationery; alternatively member 2 may rotate and member 1 remain fixed, or both members may rotate in opposite directions.  The teeth may be inclined relatively to the axis of rotation of the apparatus.
Patent GB-296575-A (GB)
Title: A device for separating and delivering a definite volume of fluid from bulk
IPC: G01F11/22
Filed: 1927-10-01
Abstract: 296,575. Marshall, J. S. C., and Clayton, G. S. Oct. 1, 1927. Moving-chamber apparatus. -- In apparatus of the rotary valve type, the valve A is attached to the bottom B of an open vessel so that the amount of liquid that may be delivered is not limited. The valve is in two parts E, L screwed together to form the measuring chamber, the inlet and outlet ports N<1>, N<3> being in the, part E and adapted to be brought into register with inlet and outlet ports in the fixed casing A of the valve. An air port N<6> connects the interior of the valve with a pipe 0 in the supply vessel, and an air port N<4> in the part E registers with the air port N<2> when the outlet port N<3> registers with the delivery port N<5>. In another form for delivering a variable quantity, a siphon R with ports S opening into a variable cap T is mounted in the part E so that when the end N<7> of the siphon is brought into register with the port N<5>, delivery continues until the level of the liquid in the valve reaches the lower end of the cap T.
Patent GB-227528-A (GB)
Title: Improvements in or relating to the treatment of coal
IPC: B07B4/04
Filed: 1923-10-18
Abstract: 227,528. Shelton Iron, Steel, & Coal Co., Ltd., and Gardner, C. B. Oct. 18, 1923. Fuel.-A method of treating coal consists in passing the whole of the coal without regard to its size over one or more screens a and subjecting to a transverse current of air which removes the fine coal and dust, the larger pieces then passing to a washer c. The screen a may consist of louvers or of any suitable mesh material and forms the inclined bottom of the coal shoot b. The air blast may be produced by a blower e, suction fan g, or both, and the fine material is carried along the pipe h to any suitable receptacle and may be mixed in any required proportion with the washed coal. When the coal, after being washed, is crushed, the fine material may be passed into the crusher i and there mixed with the washed coal during the crushing operation.
Patent GB-916333-A (GB)
Title: Improvements in and relating to gas turbine plants
Inventor: FORSLING BENGT ERIK GUSTAF
IPC: F02C7/00
Filed: 1958-08-13
Abstract: 916,333. Gas turbine plant. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 28, 1959 [Aug. 13, 1958], No. 26045/58. Class 110 (3). In a gas turbine plant the turbine rotors for producing forward and reverse drive output are mechanically connected together for synchronous rotation and are enclosed each in a separate casing which is provided with inlet and outlet openings. When the forward turbine 1 drives the plant, the reverse turbine 14 which may be of the single stage impulse type, draws cooling air into its casing through a pipe 29 and openings 25, 26 into annular spaces 23, 24 of the casing. The quantity of air may be controlled by a valve or orifice plate at the pipe inlet 30 or by a fan in the pipe 29 and is exhausted through the duct 22. A part of the exhaust casing may be built as a diffuser to allow the rotor 16 to run in a vacuum under power. During astern operation the turbine 1 draws in air through an exhaust duct 8 and the air is discharged to the atmosphere through a pipe 32 if cooling is required during prolonged running. Alternatively, an extractor fan may be provided in the pipe 32 which can be set running at a predetermined speed when in reverse drive. A single fan running continuously may be provided for both turbines and cooling air directed to the forward or reverse turbine as required, by manual or automaticallycontrolled valves. The turbine exhaust ducts 8, 22 may be led to a single funnel.
Patent GB-1114117-A (GB)
Title: Improvements in or relating to h.t. power connectors
Inventor: FECHNER JOACHIM
IPC: H01R13/53
Filed: 1965-06-21
Abstract: 1,114,117. Cable joints. " OTTO BUCHWITZ" STARKSTROM - ANLAGENBAU DRESDEN, VEB. 21 June, 1965, No. 28138/65. Heading H2E. A joint 4 in a high-tension cable having conductor 3 and insulation 1 is filled with a material 6 the di-electric constant and/or specific resistance of which decreases with radial distance from the conductor either uniformly or in discrete steps in annular rings 6a, 6b &c,
Patent GB-420249-A (GB)
Title: Improvement connected with geysers and like water heaters
IPC: F24H9/20
Filed: 1933-09-22
Abstract: 420,249. Valves for water heaters. LENTON, H. J., and FENLON & SON, Ltd., 8, Tudor Street, Blackfriars, London. Sept. 22, 1933, No. 26178. [Class 135] The gas valve 18 of a water heater is actuated by a bucket 10 receiving the inflowing water and supported in a bifurcated arm 9 mounted on a spindle 7 carrying a crank disc 13 connected by an adjustable link 15 with the gas valve spindle 16. The crank disc and adjustable link are housed in a box 2 provided with an inspection door 3 and connected to the burner fitting 21, interposed between the burner and the main and pilot light supply cocks 22, 24, by a tube 1 surrounding the gas valve spindle. The spindle 7 passes through a screwed sleeve secured to the box 2 and provided with nuts 5, 6 whereby it may be secured to the heater casing. A flanged member 8 is adjustably secured to the spindle 7 to prevent water splashing into the bearing. The bucket has a discharge hole or holes 29 and is adjustably counter weighted by a weight 12 so that when water ceases to flow the gas valve is automatically closed.
Patent GB-834492-A (GB)
Title: Improvements in mechanical stokers for boiler and other furnaces
Inventor: MACDONALD ERIC JOHN CHRISTOPHE
IPC: F23K3/00
Filed: 1957-08-20
Abstract: 834,492. Reciprocating grates. HODGKINSON (SALFORD) Ltd., J. Nov. 19, 1958 [Aug. 20, 1957], No. 26202/57. Class 51 (1). A grate for a mechanical stoker is mounted so that it can be vibrated longitudinally and comprises closely spaced longitudinal bars A of triangular cross-section and small width. The bars A are arranged in sections, Figs. 3 and 4, the sections being mounted in a frame B supported on bearing surfaces on the chassis C and vibrated through springs D. Fuel from a hopper E is fed on to a plate a 1  at the front of the grate and ash is discharged from a dead plate a 2  at the back. The frequency or amplitude of the vibrations may be variable, and rate of travel of the grate may be faster in the forward direction than in the reverse direction.
Patent GB-683927-A (GB)
Title: Improvements in or relating to adhesive tapes and liners having low adhesion coatings
IPC: C09J7/40
Filed: 1950-10-27
Abstract: A copolymer of 40-80 per cent of a higher alkyl acrylate or methacrylate, wherein the alkyl radical has at least 12 carbon atoms, and acrylic or methacrylic acid, is used in the production of low-adhesion coatings on films.  The (meth)acrylic acid can be replaced in part by acrylonitrile or methacrylonitrile.  Coating may be effected from organic solution or aqueous emulsion.  In an example, octadecyl acrylate and acrylic acid in the weight ratio 3 : 2 are dissolved in ethyl acetate, oxygen is removed, a small quantity of benzoyl peroxide is added, and the mixture polymerized at a temperature increasing from 50 DEG  to 71 DEG  C.  To prevent gelation, a little water may then be added.  For the production of an aqueous dispersion, there is added to the ethyl acetate solution, propanol and water, and a relatively small amount of p  morpholine. The organic solvents are then distilled off under vacuum.
Patent GB-773033-A (GB)
Title: Improvements in or relating to spigot and socket joints
IPC: B29C61/02
Filed: 1955-09-14
Abstract: 773,033. Pipe joints. SOC. PER AZIONI LA RESINA. Sept. 14, 1955 [Sept. 25, 1954], No. 26260/55. Class 99(1) In a spigot-and-socket joint having a pipe 1, Fig. 1, of thermoplastic material with a a socket provided at one end-by deformation at an elevated temperature, and a second pipe 3 having a resilient gasket ring 6 around the end which is inserted into the socket, the latter, due to the property of thermoplastic materials to resume their original shape whenever they are heated a second time after deformation at an elevated temperature, is contracted into the pipe 3 and the gasket 6 upon reheating the socket. The pipe 1 of such material, as PVC, has the socket formed by the insertion of a mandrel after softening the pipe end by heat; the pipe 3 is of metal or plastic whilst the gasket 6. is made of rubber. Upon reheating the socket it shrinks on to the pipe 3 as shown in Fig. 2 and presses the gasket 6 radially; the shrinking action may be assisted by applying a, metal sleeve around the bell mouth. Such a joint permits relative axial movement between the pipes without leakage occurring. In a modification, the pipe 1 has a single bell mouth and the pipe 2 is formed with a bulge behind the gasket. In another modification, the pipe 2 is provided with a bell mouth and two spaced gaskets; the pipe 2 may have a number of protrusions of any suitable shape.
Patent GB-601858-A (GB)
Title: Improvements in apparatus for supplying water vapour and oil vapour to the intake ofinternal combustion engines
IPC: F02M25/00
Filed: 1945-10-09
Abstract: 601,858. Treating charge. RIDEHALGH, F. Oct. 9, 1945, No. 26269. [Class 7 (ii)] Oil and water vapours are supplied from a tank 1 through a pipe 2 to the throat of a Venturi in the induction manifold of an internal - combustion engine to mix with the fuel mixture, air, which may be heated by the exhaust, being drawn through a pipe 6 into a mixture of lubricating oil and water in the tank, wherein a partial suction is maintained above the liquid level to aid vaporization by providing the pipe 6 with a capillary jet 7. Oil vapour or water vapour alone may be supplied.