baber/WOPTO huggingface dataset:
Patent GB-883099-A (GB)
Title: Control apparatus for coal-cutting and other machines
IPC: E21C29/00
Filed: 1958-10-16
Abstract: 883,099. Automatic current control systems. EICKHOFF MASCHINENFABRIK UND EISENGIESSERIE GEB. Oct. 16, 1958 [Oct. 26, 1957], No. 33006/58. Class 38 (4). [Also in Group XXIX] In a machine having a power-driven tool and tool-advance mechanism, the manual setting of the speed of advance of the tool is reduced when the load on a motor driving the tool exceeds a predetermined valve. A tool-advancing hydraulic motor of a coal-cutter is fed from a vane-pump 1 driven by an electric motor M. The delivery from the vane-pump is controlled by a piston 2 positioned in a cylinder 4 by a plunger 7 working in an hollow piston-rod 3. The plunger 7 determines the direction of flow of fluid from a delivery pipe 9 through passages 13, 14 to a return pipe 18, and is manually controlled through a spring 8 by a hand wheel 6. A solenoid 21 is energized from a current transformer 20 so that an armature acting against a compression spring 24 positions a piston 23 of a valve 22 in dependence on the motor current. The valve controls the admission of fluid through feed-pipes 25, 27 to a cylinder 26. At a predetermined current valve a piston-rod attached to a piston 28 is brought into engagement with a pin 30 and over-rides the setting of the manual control to maintain the motor current at the predetermined value. The spring 8 is rigid for the force necessary to manually operate the plunger 7. The pistonrod has sloping faces 29 which position the plunger 7 for servo-delivery to the tool-advanc ing motor when piston 28 is at maximum travel.
Patent GB-1513027-A (GB)
Title: Threshold value switching networks
IPC: H03K19/00
Filed: 1975-08-08
Abstract: 1513027 Logic circuits SIEMENS AG 8 Aug 1975 [21 Aug 1974] 33101/75 Heading H3P An s out of n logic circuit comprises a first circuit S 1 which receives m of the n logic inputs E1, E2, E3 and produces outputs, e.g. on lines G1, G2, G3, when 1, 2, 3 ...i... m of the inputs are at the "1" logic level and a second circuit S2 which receives the outputs from the first circuit and also receives, as control inputs, the remaining n-m E4, E5, E6 logic signals, the second circuit being such that when k out of the n-m signal are present the ith output from the first circuit is switched through to the output A of the second circuit in such a manner that i+k=s for all the pairs of outputs of S1, G1, G2, G3 and inputs of S2, F2, Fl, F0. In the example shown s is chosen to be 3. When no signals E4, E5, E6 are at a "1" level the output G3, corresponding to all 3 inputs El, E2, E3 at a "1" level, is switched through to output A. Similarly, when one of the inputs E4, E5, E6 is at a "1" level the output G2, corresponding to two out of E1, E2, E3 at a "1" level is switched through to A so that the circuit is still responding to 3 inputs. The number of outputs G1, G2, G3, etc. must equal the number of inputs F1, F2, etc. of the second circuit S2 and if this is not the case further outputs, e.g. G0, are provided which carry permanent 0 or 1 levels as necessary.
Patent GB-284277-A (GB)
Title: Electro-mechanical distance indicating device for liquid levels
IPC: G01F23/36
Filed: 1927-12-07
Abstract: 284,277. Soc. Amary et Poulet. Jan. 27, 1927, [Convention date]. Indicators actuated by floats.-The level of liquid fuel in the tank of a motor vehicle operates a float device the movements of which are transmitted and indicated electrically at another point on the vehicle. A float 1 operates a spindle 6 through bevel gearing 4, 5, the spindle 6 passing through a tubular member 7<1> fitted with stuffing boxes 8 and filled with glycerine to prevent leakage of petrol. The float and its associated parts are carried by a filler cap 9. A brush 12 carried by the spindle 6 bears on a potentiometer resistance 14, Figs. 1 and 8, and a brush 13 bears on a semicircular contact 17. The receiver, Fig. 4, comprises a casing 19 carrying a spindle 20 with two iron blades 22, 23, set 180‹ apart, and a pointer 24 moving over a dial 25. A coil 26 is arranged in the centre of an iron ring 27 on which are mounted four coils 28 - - 31, crossconnected to one another and to the potentiometer as shown. The point 32 is connected to the circular contact 17. The potentiometer is connected at 35, 36 with a source of direct or alternating current. If the brush 12 is midway along the resistance 14 the current strengths in the pairs of coils 29, 30 and 28, 31 are equal, and the resultant magnetic field causes the blades 22, 23 to occupy a line between the coils 29, 31. A change in liquid level causes a movement of the brush 12, and this renders unequal the magnetic fields due to the two pairs of coils, so that the resultant field is in a different direction and the pointer is displaced. The indications are independent of the applied voltage, and direct or alternating current may be used. The current may be taken from the primary of an ignition magneto, and the high resistance of the coils does not appreciably affect the working of the magneto. The apparatus is applicable for signalling the indications of other instruments such as gauges, thermometers, telegraphs, and the like.
Patent GB-756531-A (GB)
Title: Folding rigid roofs for motor road vehicles
IPC: B60J7/14
Filed: 1954-11-17
Abstract: 756,531. Rigid folding roofs for vehicles. FLEMMING, H. Nov. 17, 1954 [Nov. 20, 1953], No. 33236/54. Class 108 (1). A folding rigid roof comprises parts i, l and m, Figs. 1 and 2, and links n which permit the parts i and l to pivot rearwardly and downwardly to lie on top and externally of the body after the part m has been moved beneath the part l. In the lowered position the part i reaches to the top of the front seat and closes off the rear seats. The part i may be brought into position it or may be detached to open the front part of the vehicle only. The space c however is accessible through the doors o or by moving the part i and the boot d may be reached by a lid e. In another embodiment the roof part I is located inside the body when the roof is down, and is moved by two pairs of links or by one pair of links and sliding or rolling guides. The part m may be pivoted to the body a. In a further example, Fig. 5, the roof comprises a part r pivoted at 1 to the part s which in turn is pivoted to the body at 2. Window pillars t are pivoted at 3 and 4 so that when they rotate rearwardly about the points 4 the roof parts r, s are lowered in to the body and the rear seat space closed off as in Fig. 2, a part x on the body being arranged to hinge downwardly by lever and rod connections to the point 2. The roof may be lowered manually by levers and rods operated from the driving seat, or by power means, and the weights of the roof parts may be counterbalanced.
Patent GB-340031-A (GB)
Title: Improvements in or relating to ratchet or "notching" mechanism
IPC: H01H21/26
Filed: 1929-08-13
Abstract: 340,031. Ratchet gearing. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and MORRIS, F., 32, Mulgrave Avenue, Ashton-on-Ribble. Aug. 13, 1929, No. 33327/30. Divided on 338,189, [Class 38 (iii), Electric motor control systems &c.]. [Class 80 (iii).] In ratchet gearing, for example for electric motor controllers, in which a ratchet wheel 1 is advanced against a biassing- spring by a driving-pawl 2 and precluded from return by a detent t pawl 4, power means, such as pneumatic or electromagnetic means, or both, is used to control both pawls so as to bring the pawl 4 into contact with the wheel before, and disengage it from the wheel after, the pawl 2 becomes operative, both pawls being normally biassed to inoperative positions. The pawl 4 turns on a pivot 5 registering with that of the rocker 6 on which it is carried, and is pressed by a spring 10 towards a stop 9 on the rocker. A spring 8 bearing on a piston 7 normally disengages the pawl from the ratchet wheel, pneumatic pressure being used to raise the piston and activate the pawl. Similar pneumatic and spring means are employed to control the piston 3 actuating the pawl 2. Alternatively, the pneumatic operation may be replaced by electromagnetic operation, for example employing solenoids or controlling air valves for pneumatic operating means. The air operation of the pistons 7, 3 is controlled by a pedal 18 carrying a spring-supported plate 19 brought successively into operative connection with tappets 13, 20 operating inlet and exhaust valves 12, 16, controlling the piston 7 and similar valves 12<1>, 16<1> operating the piston 3. Initial movement of the pedal activates the pawl 4, which remains in action while the pedal is lowered further and raised partly as often as necessary to actuate the pawl 2 and feed forward the wheel 1. Complete release of the pedal disengages both pawls from the wheel, so that it returns to zero position under the action of its biassing spring. Specification 338,189 is referred to, and the Provisional Specification repeats matter which is included in that Specification. Specification 313,268, [Class 38 (iii), Electric motor control systems &c.], also is referred to.
Patent GB-1437797-A (GB)
Title: Liquid crystal cells
IPC: C09K19/56
Filed: 1973-07-12
Abstract: 1437797 Modulating light DAINIPPON INK & CHEMICALS Inc and DAINIPPON INK INSTITUTE OF CHEMICALS RESEARCH 12 July 1973 [15 July 1972] 33391/73 Heading H4F The turbidity of a layer of nematic liquid crystal material disposed between two plates is reduced by treating the internal surfaces of the plate with a fluorine containing surface active agent whereby the nematic material assumes a homotropic alignment (long molecular axes at 90 degrees to the plates). The surface active agent includes a hydrophobic saturated perfluoralkyl group and a hydrophilic group which may be anionic (carboxylate, sulphate, phosphate), neutral, e.g. -(CH 2 CH 2 O-) m H where m is 5-25, or preferably cationic, for example containing -N<SP>+</SP>R 3 .X<SP>-</SP> or -N<SP>+</SP>R 2 .HX, where R is a lower alkyl group and X- is an acid anion. The agent is deposited as a solution, followed by drying, either on the plates before assembly, or in the assembled cell. As particularly described the nematic layer exhibits induced birefringence in response to an electric field applied via conductive coatings on the plates but reference is made to ultrasonic activation of the liquid crystal material and to the production of a light scattering state.
Patent GB-825732-A (GB)
Title: Improvements in or relating to electrically heated hot water heaters and storage tanks
IPC: H05B1/02
Filed: 1957-10-25
Abstract: 825,732. Control of heating resistors. STIEBEL, T. H. Oct. 25, 1957, No. 33446/57. Class 38 (4). A combined storage and instantaneous electrical water heater comprises a container 1 enclosing basic heating elements 3 controlled by a temperature-operated switch 7-9, 14, and a second set of elements 4 controlled by a differential pressure-operated switch 16-22 operating at a determined water flow, one side of which is connected to an orifice 23 which may be positioned in either the inlet or outlet pipes, or a separate outlet pipe to cater for heavy water demands. In this case the pipe serving the remainder of the outlets may have a restriction to limit the flow. A number of arrangements are described for operating the pressure-operated switch. The total heating capacity of the two elements may be between 18 and 21 kilowatts. A thermal cut-out may be connected in series with the second set of elements.
Patent GB-1299851-A (GB)
Title: Improvements relating to missile tracking systems
Inventor: VERNAU JOSEPH ROGER
IPC: F41G7/30
Filed: 1967-08-31
Abstract: 1299851 Photo-electric target tracking BRITISH AIRCRAFT CORP Ltd 29 Nov 1968 [31 Aug 1967] 33529/67 Heading H4D A missile is tracked and guided to a target by a television system using a vidicon for providing difference voltages representing the Cartesian co-ordinates of the missile position with respect to the target position, these voltages being used to direct the flight path of the missile. The missile carries a flare to facilitate its observation and the TV camera may be coupled to a binocular sight, the lines of sight of the two optical systems being collimated so that when the observer centres the target on the bullseye of his optical system, the target is also centred on the camera screen. According to the invention, when the target has been located at a reference point in the field of scan and the missile has appeared in the field, the scanning area is contracted about the position of the missile image so that the missile remains in the reduced scanning area and when the co-ordinate voltages approach zero the field of view is enlarged to magnify the tracking area and facilitate guidance of the missile to the target. In Fig. 1, the scanning raster of a vidicon camera tube 10 is controlled by conventional E.H.T. and line time base circuits 11 and by a frame time base circuit 12. A signal representing the co-ordinates of the missile flare is derived from the vidicon, the position of the flare signal in relation to the frame sawtooth waveform giving the frame co-ordinate signal, which is fed to the frame gate. The video signal output of the camera passes through an amplifier 13 and is then applied firstly to acquisition circuits of known form by way of a conductor 14 and secondly to line and frame gating circuits 15 and 16 and to a sum gating circuit 17 by way of a conductor 18. When a signal is present in the sum gate, the signal is fed to the logic circuit 19. A further signal representing the period since launching is applied to the logic circuit 19 to prevent a premature initiation of the reduced scan. These two signals together control the moment of scan reduction. The sum gate takes account of both the line and frame positional planes of the missile and confirms that both planes are present in the field of view even though only the elevation plane is collapsing. The line and frame gates provide correcting signals to hold the gate around the flare signal and also provide azimuth and elevation signals to the missile. When the Cartesian co-ordinates approach zero a computer commands a change of field of view which is equivalent to magnifying the camera view twenty times. The computer checks that the line and frame outputs are within a certain tolerance of the centre of the field of view, and that a predetermined "timeafter-launch" has elapsed. It then commands the change of field of view.
Patent GB-1151932-A (GB)
Title: System for Controlling a Vehicle
Inventor: SEDGFIELD HUGH BROUGHAM
IPC: B62D1/26
Filed: 1966-07-26
Abstract: 1,151,932. Steering vehicles along fixed guideways. SPERRY RAND Ltd. 26 Oct., 1967 [26 July, 1966], No. 33600/66. Heading B7H. [Also in Division G3] In an automatic guidance system for a vehicle comprising a follower which is engageable with a fixed guideway and pivots about a vertical axis on the vehicle to actuate sensing means which applies an error output to control means for adjusting the steering gear of the vehicle should the vehicle deviate from the required path, means are provided for temporarily biasing the follower to one side or the other, whereby the vehicle is guided by one side of the guideway exclusively and may be caused to take a selected path at a fork in the guideway. The follower 7 is carried by the down-turned end of an arm 6 which pivots about a vertical axis in a box 5. An hydraulic actuator 13 controlled by a valve 28 provides lateral bias on the arm 6 when required. The guideway comprises steel plates 10, 11 defining a slot at the top of a channel 9 in a concrete track 8. The channel 9 is provided with means for drainage and cleaning, and may contain signalling and control cables. A potentiometric pick-off 18 actuated by the arm 6 transmits a voltage derived from the vehicle battery to an amplifier 19 through a proportioning resistor 20. The output from the amplifier 19 is applied to an electromagnetic valve 22 controlling an hydraulic actuator 23 connected by rack-and-pinion mechanism to the steering column of the vehicle. A potentiometric pick-off 26 transmits to the amplifier 19 through a proportioning resistor 21, a feed-back voltage which is derived from a tachogenerator 27 so as to be proportional to the speed of the vehicle. A by-pass valve 32 for disabling the system when it is desired to steer the vehicle manually may be coupled to mechanism for telescoping the down-turned end of the arm 6 to retract the follower 7. Potentiometric pick-offs 29, 30 may be associated with the steered wheels 2, 3 and connected to the amplifier 19 to cancel spurious control signals produced by rolling of the vehicle. In another embodiment, Fig. 6 (not shown), the system is operated entirely hydraulically so as to be independent of the electrical system of the vehicle. Pneumatic means may replace the hydraulic means described.
Patent GB-888985-A (GB)
Title: Improvements relating to valves having resilient seats
IPC: F16K1/14
Filed: 1957-10-28
Abstract: 888,985. Valves. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., and WOJTECKI, B. W. Oct. 28, 1958 [Oct. 28, 1957], No. 33614/57. Class 135. A valve, as shown a non-return valve with a loose ball closure member, has a resilient, e.g. rubber, seating member 11 retained in the housing, without axial compression over any part of its length, by making at least a portion of it of greater diameter than the housing bore in which it is fitted so that it has an interference fit therein. As shown in Fig. 2, the interference fit is provided by a bead 13, but the bead may be omitted and the whole of the length of the seating formed to be an interference fit. Alternatively, the seating may be tapered externally so that only its extremity remote from the ball is an interference fit, or the seating may be parallel sided and the housing counterbored to provide clearance at the end of seating engaged by the ball. Fig. 5 shows a seating held against axial displacement by a flange 16 received in a counterbore in the housing, the flange being a clearance fit in the counterbore. Alternatively, the flange may be an interference fit, or may have a peripheral bead that is an interference fit, in the counterbore whilst the remainder of the seat is a clearance fit in the housing. In a further modification of Fig. 5, the radial face 18 of the flange has a sealing bead, and the housing has a passage connecting one side of this bead to atmosphere. The closure member may be a hemispherically-shaped poppet valve, may be biased by gravity or by a spring, and may be opened and/or closed by a positively applied force.
Patent GB-282108-A (GB)
Title: Improvements in or relating to wind propelled vessels
IPC: B63H9/06
Filed: 1927-12-12
Abstract: 282,108. Budig, F., and Langen scheidt, R. Dec. 13, 1926, [Convention date]. Propelling by reaction on aerofoil surfaces.-A propulsion unit for ships comprises an aerofoil surface associated with the vanes and steering members. The ship I has a turret 2 pivotally mounted at 3 on a fore and aft axis and carrying a rotatable collar 6 having bearings for the shaft of an aerofoil 5. The aerofoil may be adjusted on its axis by pulley gearing and may be swung from a transverse to a fore and aft position as necessary. To take up lee-way, vanes 12. 13 project from the turrets, each vane being free within the limit of stops to take up a balanced position on its axes. A screw propeller unit is fitted. Steering is effected by a water-rudder 14 carried by the pivoted tail of the cabin which acts as an air rudder. Propulsion may be effected by swinging the turret on its axis.
Patent GB-1468476-A (GB)
Title: Process and apparatus for the production of shaped bodies from mouldable materials
IPC: C03B11/08
Filed: 1975-08-13
Abstract: 1468476 Moulding glass D SWAROVSKI & CO 13 Aug 1975 [13 Aug 1974] 33674/75 Heading C1M Moulded glass bodies having an accurately shaped portion are produced by placing a heated glass blank in a mould cavity, at least one press tool is brought to a predetermined position within the mould, and the size of the mould cavity reduced by deformation of the surfaces of the less accurate portions. As shown, Fig. 3, two press tools 8 are moved into the mould after which a sleeve 9 surrounding one press tool is moved into the cavity thereby urging the blank 11 against the surfaces of the press tool. In a second embodiment (Fig. 5) the mould 7 has a stepped portion so that movement of the mould in the direction C causes reduction in the mould cavity size.
Patent GB-1178313-A (GB)
Title: Drive System for Film Processing Apparatus.
Inventor: STUART JAMES LESLIE
IPC: G03D3/14
Filed: 1967-07-21
Abstract: 1,178,313. Handling thin material. PHOTOMEC (LONDON) Ltd. 28 June, 1968 [21 July, 1967], No. 33722/67. Heading B8R. [Also in Division G2] In a roller system for transporting a continuous strip of film through a processing apparatus, the drive rollers 20 are driven by being drawn, against biasing means, into contact with a drive shaft 22, and the rate of advance of the film by the rollers is higher than the rate at which the film traction system is drawing the film on. As shown in Fig. 1, the film 9 passes from a supply spool 10 over an elevator system 12, 13, and then through a section 15 comprising one or more processing tanks, to a drying section 16, then between drive rollers 17, 18 and over another elevator system 19 to a take-up spool 11. In the tank section the film passes over several sets of rollers 20 and lower rollers 21. Each of the upper rollers 20 is mounted separately on a pivot 24 at one end of a lever 25 swingably mounted on a spindle 26 common to each set of upper rollers. The upper rollers are urged upwards by springs 28. Below each set of upper rollers is a drive shaft 22, all these drive shafts being coupled together by belts 31, and driven via a belt 34 and spindle 33 from a motor 32. The rollers 20 are normally biased by springs 28 so that they are out of contact with drive shafts 22, but can be drawn into contact with them when the tension in the film increases sufficiently. The same motor 32 serves to drive roller 17 via a gear-box 44, the speed being adjustable by a knob 45. The speed at which the film is drawn through the apparatus by drive roller 17 is less than the speed at which the film is advanced when rollers 20 are drawn into contact with drive shafts 22. Thus an increase in the film tension, causing rollers 20 to contact shafts 22, is rapidly relieved, and fed back to the elevator at the feed-in side.
Patent GB-209270-A (GB)
Title: Improvements in lithopone products and process of making the same
IPC: C09C1/06
Filed: 1922-12-11
Abstract: 209,270. Mitchell, J. L. Dec. 11, 1922. Pigments.-Lithopone is treated before calcination so as to produce round its particles, after calcination, a protective coating against oxidation consisting of an insoluble salt. The lithopone may be quenched in, or saturated with, an aqueous solution of a soluble salt such as the sulphide of barium, calcium. or strontium, which can be converted with the aid of heat into an insoluble salt, as the corresponding sulphate. The aqueous solution is preferably agitated while the lithopone is therein, and the saturated product pressed to remove surplus liquid prior to calcination. Specification 177,123 is referred to.
Patent GB-1492135-A (GB)
Title: Drains
IPC: F16L3/16
Filed: 1975-08-13
Abstract: 1492135 Pipe joints HEPWORTH PLASTICS Ltd 13 Aug 1975 33815/75 Heading F2G To allow for building subsidence a soil pipe 9 passing through a wall 10 is connected to an underground drain 13 by a pipe 6 having flexible joints 7 and which is surrounded by a rigid tubular member 1 having apertured closures 2, 4, the closure 2 being rigid and the closure 4 adjacent the wall 10 being deformable. The tubular member is of plastics, e.g. PVC and the rigid closure 2 of similar material. The deformable closure 4 is of foamed plastics and forms a push-fit in the tubular member 1.