baber/WOPTO huggingface dataset:
Patent GB-397147-A (GB)
Title: Improvements in the manufacture of keys for locks
IPC: B21D53/42
Filed: 1932-02-18
Abstract: 397,147. Making keys. HARRISON & SONS, Ltd., H. and HARRISON, F. H., Villiers Street, Willenhall, Staffordshire. Feb. 18, 1932, No. 4810. [Classes 83 (ii) and 83 (iv).] Punching; shear blades.-Keys are made from metal strip H having a rib h on each face near the mid line of the strip, by feeding the strip continuouslv to a machine having a pair of blanking tools which blank out a substantially complete key including the steps in the key bit at each operation. The upper tool carries punches b, c and replaceable punches a<5>, a<2>, g<1> and the die has three sinkings. On the downstroke of the head the punch c forms the hole t<1> and the punch b forms a notch g which co-operates with a pivoted detent D for positioning the strips for the blanking operation. The front end of the strip engages a projection d<1> and moves the detent to engage the notch g and arrest the bit under the punches a<5>, a<2>, g<1>. The punch g<1> is built up of plates. On the next downward stroke the punch a<5> blanks out the handle, the punch a<2> the shank and the punch g<1> the bit. The key is forced through the lower die and the waste remains in strip form.
Patent GB-577640-A (GB)
Title: Bonding of rubber to metal or other rigid components
IPC: C08J5/12
Filed: 1944-03-15
Abstract: In the process of bonding rubber to a prepared metal surface by vulcanization, the wetting of the metal surface by the rubber is facilitated by means of a relatively high-boiling ester of a long-chain fatty acid which is itself capable of wetting the surface, is compatible with unvulcanized rubber, and is substantially non-miscible with and insoluble in water.  The ester is preferably the stearate of cyclohexanol or methyl cyclohexanol, and it may be used as a 5-15 per cent solution in a rubber solvent such as naphtha, benzol, toluol, xylol, or petrol. The metal surface to be bonded is preferably brass-plated, and the ester forms a film which displaces water and protects the surface from atmospheric action.  If the ester is liquid at normal temperature, the surface of the metal should be dried in an oven to remove surface moisture and the solvent, and if it is normally solid, it should have a melting-point below the vulcanizing temperature.  The ester or ester solution should also be applied to the surface of the rubber when it is fed to or placed in contact with the metal to act as a wetting-agent.  If desired, the surface can also be painted with a rubber solution containing zinc naphthenate.  After plating and washing, the metal surface is lowered into a vat containing running water, on the surface of which a layer of the ester or a solution thereof is floating, the level of the water being maintained between predetermined limits by means of a siphon.
Patent GB-219041-A (GB)
Title: Improvements in or relating to injectors
IPC: F04F5/46
Filed: 1923-02-19
Abstract: 219,041. Brooke, R. G. Feb. 19, 1923. Giffard injectors; overflow arrangements.-The water valve is opened in advance of the supply of steam by means of a valve through which steam passes solely to the injector, a portion of the steam passing to a piston or diaphragm operatively connected to the water valve. The steam valve y, operated by a lever 16, Fig. 3, comprises a hollow head 12, Fig. 7. sliding in a member 13 and provided with a lateral port 14, and an enlarged solid portion y<1> normally seating against the valve seat w. An annular chamber w<1> formed in the member 13 communicates, through a. pipe v, Figs. 1 and 7, with a chamber u in which slides a piston t in a spindle s on which is mounted the spring-closed water valve o, Fig. 1. On the steam valve y being first opened, steam passes through the annular chamber w<1> and pipe c to open the water valve, steam not being admitted to the chamber 13<1>, feeding the injector nozzle until after the left-hand end of the valve head, Fig. 7, has cleared the annular passage. When the valve is closed the port 14 provides a pressure leakage passage from the chamber u to the injector nozzle through the hollow valve 12. In the modified form shown in Fig. 8, the hollow portion 12 is loosely mounted on the valve spindle 48, so that on the first movement of the spindle to the right, such movement being controlled by the lever 16, steam is admitted only to the annular passage w<1> and pipe v, the portion 46 in this instance being drawn to the seat 49. Further movement of the spindle moves the portion 12 to admit steam as before to the injector nozzle. In modified forms the piston t may be replaced by a diaphragm subjected on one side to the steam pressure. In a further modification, Fig. 11, the first movement of the valve-spindle 54a in an upward direction unseats the valve 53 to admit steam to the tube 58 communicating with the water valve, subsequent movement admitting the steam to the nozzle 52 in the manner described in Specification 169,743. The steam and water valves may be used in an injector having the overflow arrangements described in Specification 219,045. The invention is applicable to live and exhaust-steam injectors and to exhaust-steam injectors having a supplementary live steam supply.
Patent GB-914847-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: H05G1/56
Filed: 1961-02-09
Abstract: 914,847. Control systems for X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 9, 1961 [Feb. 12, I960], No. 4861/61. Class 38 (4). Each switching arm of an electromagnetic switch connecting an X-ray apparatus to a 3-hose supply may be separately actuated so as to interrupt the supply to the apparatus at a current zero by means of variable phase auxili. ary voltage pulses, the peak level of which may be changed from that at which they are ineffective, to a second level, so that the next following pulse moves one of the switching arms. Separate switching arms 8-10 of an electromagnetic switch may each be actuated by energizing coils 17-19 and thus interrupt the supply of 3-phase current from lines 5-7 to a high-voltage generator 4 of an X-ray apparatus 1, by opening contacts 11-13. The discharge of condensers 27 charged from a power supply 23 through energizing coils 17-19 is separately controlled by gas discharge valve 22-20 whose ignition effects the opening of the contacts. Negative going pulses of adjustable phase are fed to the control electrodes 26 of the discharge valves 20-22 from rectifying circuits 34 supplied from transformers 30 through phase-shift arms 32, 33. The common positive rectifier output is connected through a resistor 37 to the cathodes 25 of the valves. Thus, when the X-ray tube 1 is non-operative, the gas discharge valves are prevented from igniting. When X-ray tube 1 is energized by closing the switch contacts 11-13, an X-ray sensitive cell 40 is actuated, thus enabling a capacitor 43 to charge, which after a given time delay renders conducting a previously non-conducting electronic vacuum valve 46, thus causing current to flow through a resistor 37. The volt-drop across the resistor 37 increases the potential of the voltage pulses appearing at the control electrodes 26 of the discharge valves 20-22 so that the valves will be ignited by the next following pulse peak, this instant being arranged to be the same as that for which the phase current is zero. The variable resistors 32 are individually adjustable so that the instant of ignition of each valve may be individually determined.
Patent GB-397174-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H51/04
Filed: 1932-02-19
Abstract: 397,174. Light-current relays. STANDARD TELEPHONES & CABLES, Ltd. and TERRY, R. S. G., Connaught House, Aldwych, London. Feb. 19, 1932, No. 4925. [Class 38 (v).] In a two-step light-current telephone relay of the type employed in the system described in Specification 396,704 as a line and cut-off relay in which the armature in moving through its first step with a reduced energization of the operating winding operates the relatively weak " line '' contact springs and a full, energization of the operating winding operates the stronger " cut-off " contact springs, the latter springs are, according to the invention, arranged normally to be supported at or near their free ends. As shown in Fig. 1, the armature 1 is first attracted with a resistance 2 in series with the relay winding and engages an insulating distance piece 118 attached to the contact spring 3, moving this spring out of contact with a spring 2 and into contact with a spring 4. This movement of the blade 3 moves it into engagement with a distance piece 17 attached to a spring 6, this spring normally bearing near its free end on a shoulder 12, Fig. 2, of an adjustable insulating block 10 at the front end of the winding. Owing to the relatively small operating force on the armature and the relative stiffness of the spring 6, the latter is not moved at the initial stage of the armature attraction. When, however, a circuit for the relay winding is made directly across the supply voltage, the resistance 25 being cut out of the energizing circuit, the spring 6 is raised from the shoulder 12 of the block 10 and is moved from the contact 5 into engagement with the contact 7. A spring 9 is at the same time operated by means of a further distance piece 16 to move out of engagement with a back contact spring 8. Shoulders 11, 12, 14 on the block 10 limit the upward movement of the back contact springs and the shoulder 13 limits the downward movement of the spring 7 during the restoring movement of the relay armature.
Patent GB-415101-A (GB)
Title: Improvements in tuning and indicating devices for radio receiving sets
IPC: H01J31/14
Filed: 1933-02-17
Abstract: 415,101. Valve circuits for wireless reception; cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd., and YOUNG, A. J., Connaught House, Aldwych, London. Feb. 17, 1933, No. 4930. [Classes 39 (i) and 40 (v).] A cathode ray tube, preferably of the type described in Specification 417,182, is used as a visual tuning indicator for a wireless receiver. If automatic gain control is used the voltage across the decoupling resistance in the high frequency amplifier circuit is connected to the deflecting plates a, b or, as shown, the detector decoupling resistance is used when automatic control is not used. Alternatively, the deflecting plates may be connected across an impedance in the anode circuit of a high frequency amplifier in which case a line indication is given. In a modification, a line indication is obtained from a direct current voltage by a cathode ray tube having an equipotential cathode surrounded by a grid of variable pitch. The cathode ray tube is mounted so as to be visible through an aperture in the cabinet preferably adjacent to the tuning scale.
Patent GB-752362-A (GB)
Title: Plasticized gelatin capsules
IPC: A61K9/48
Filed: 1954-02-19
Abstract: In a plasticized gelatin capsule containing a water-soluble substance which normally attacks gelatin, the said substance is used in admixture with a water-soluble hygroscopic liquid vehicle containing 6-40 units of ethylene oxide per molecule, e.g. polyethylene glycols of mol. wt. 300-900, polyethylene glycol monolaurate or monooleates, polyoxyethylene (20) sorbitan monooleate; a weight ratio of 1-7 : 1 is suitable.  Water may be added to the organic liquid.  Water soluble substances encapsulated are, for example, chloral hydrate, choline chloride, sodium and potassium chloride and sulphate, ethanol, isopropanol, pentynols, betaine hydrochloride, methyl ethyl ketone, alkyl acetates of 2-4 carbon atoms.  A gelatin-glycerine-water mixture is employed for forming the capsules, a method of capsulating being described.  Specification 715,879 is referred to.
Patent GB-1055865-A (GB)
Title: Hydraulic anti-shock device
IPC: B23Q5/26
Filed: 1965-02-04
Abstract: 1,055,865. Hydraulic control circuits. SIMCA AUTOMOBILES. Feb. 4, 1965 [ Feb. 5, 1964], No.4946/65. Heading F1P. Avoidance of rudder pressure surges within chambers 4, 5 Fig. 1 (not shown) on either side of a jack piston 2 when supplied by a hydraulic pump P through a line 13 and a distributing valve 11 comprising a double-acting solenoid operated pistons 12 and having a return line connection 14 is effected by means of a pressure regulating valve 16 in line 13 and having a connection 19 to exhaust a line 13 leading to the centre space 33 of a solenoid operated master piston 34 of a valve 30 which in the neutral position shown and assuming solenoid EA 1  to be energized resulting in pistons 12 being moved to the left, pump delivery pressure is in part relieved to exhaust 14 through orifice 19 in part relieved to exhaust through hones 24, 26 of valve 16, line 13<SP>1</SP> and valve 30 whilst the remaining pressure at a minimum value is transmitted through valve 11 to cylinder space 5 and pressure therein is increased to a maximum value on energizing solenoid EA 3  to displace piston 34 of valve 30 to the left whereon the progressive rise in back pressure generated in line 13<SP>1</SP> serves to seat valve 18 slowly and to increase pressure in line 13 to said maximum value. At the end of the jack stroke pressure is prevented from rising in chamber 5 by being relieved through bones 24, 26 of valve 16, a ball valve 27, bones 26a, 23 leading to the return line 14. This results in unseating of valve member 18 but maximum pressure is maintained in chamber 5 until such time as solenoid EA 3  is de-energized and the master valve piston 34 is returned by its spring 48 to the neutral position thereby connecting chambers 25, 25a to exhaust 14 resulting in complete unseating of valve 18 and exhaust of pressure from chamber 5 to said minimum value. The return stroke of piston 2 is initiated by deenergizing solenoid EA 1  energizing solenoid EA 2  and subsequently energizing solenoid EA 3  resulting in maximum pressure being developed in jack chamber 4. Automatic sequential operation of say solenoid EA 1  and solenoid EA 3  is effected by closing a switch FC 3  by means of a cam 42 on a follower rod 41 bearing against the armature 37 of solenoid EA 1 ; the switch FC 3  being in the control circuit of solenoid EA 3  and which is thus energized. The armature 50 of EA 3  is also abutted by a follower rod 51 carrying a cam 52 which closes a switch FC 5  in an alarm circuit and carrying a cam 53 which controls a switch FC 6  in the electric control circuit of EA 1 . Automatic return of the jack piston 2 is initiated by cam actuated switches FC 1 , FC 2  incorporated in the electric control circuit. In a modification the piston 2 during part of its stroke may be subjected to a pressure intermediate the minimum and maximumpressures by the provision of a second master valve 58 Fig. 2 (not shown) and an associated regulating valve 59.
Patent GB-729521-A (GB)
Title: Improvements in or relating to fluorescent screens
IPC: H01J29/38
Filed: 1953-02-24
Abstract: 729,521. Luminescent screens. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Feb. 24, 1953 [March 29, 1952], No. 5109/53. Class 39 (1). A fluorescent screen for an X-ray image intensifier comprises a first layer of ZnS activated with Ag, a second layer of ZnS activated with Mn for quenching the afterglow of the first layer, and a photo-emissive coating of caesiated antimony superposed on the first layer. It is suggested that the X-rays may be replaced by radiation of different wavelength. The red or infra-red light emitted by the second layer which is excited partly by the X-rays and partly by the blue light emitted by the zinc sulphide-silver phosphor, releases the stored energy from the latter phosphor so that afterglow cannot occur. The screen comprises lime glass layer 1, Fig. 2, shaped as a watch glass, layer 2 of ZnS-Mn, layer 3 of ZnS-Ag, conductive layer 25, and photoemissive layer 27. Layer 27 of caesium-antimony responds only to the blue light from layer 3. Layer 25 may alternatively be non-conductive, e.g. of glass similar to the glass mixed with layer 3, or may be omitted if layer 27 is sufficiently conductive. The output fluorescent screen 13 is a zinc cadmium sulphide layer covered with an aluminium layer.
Patent GB-278244-A (GB)
Title: Improvements in door or like engaging and holding appliances
IPC: E05C17/50
Filed: 1927-02-24
Abstract: 278,244. Jackson, W. G. Feb. 24, 1927. Door holders; stops. - Hinged doors, particularly the doors of ships' cabins and of lavatories, are secured in an open or nearly closed position by a staple or eye 16 that is adapted to engage a hook 13 pivotally mounted on the top of a case 3 containing a spring 8 arranged behind a buffer 7. Preferably, the eye member 16 is secured to the door. When the door is swung into the open position, the inclined part 18 of the eye engages the front part of the hook and lifts it against the action of the spring 14 so that the hook and eye engage automatically, the door at the same time pressing against the spring buffer and compressing the spring 8 so that the hook and eye are firmly engaged.
Patent GB-1537053-A (GB)
Title: Fuel system for an internal combustion engine
IPC: F02M7/17
Filed: 1975-02-07
Abstract: 1537053 Spray carburetters BRITISH LEYLAND UK Ltd 5 Feb 1976 [7 Feb 1975] 5273/75 Heading F1H An I.C. engine fuel system comprises a carburetter having a fuel metering jet 1 controlled by a needle 2 in dependence upon the position of a suction operated member 3 that also controls the flow cross-sectional area of a choke 4 in the main air passage of the carburetter to ensure a depression at the metering jet 1, the system also having a pressure control valve 10 adapted to regulate fuel pressure upstream of the metering jet. A pressure sensing means 21-25 operatively connected to the valve 10 provides a load thereon responsive to engine load, fuel and/or air intake temperature and atmospheric pressure and means 31-33 regulate the effect of atmospheric pressure variations on the valve 10 in response to changes in the flow cross-sectional area of the jet. The pressure sensing means 21-25 and the regulating means 31-33 are such that the fuel pressure upstream of the jet 1 is diminished when the fuel temperature or air temperature increases or the atmospheric pressure diminishes with the other two of these remaining constant or when the fuel temperature and the air temperature both increase while the atmospheric pressure remains constant. The pressure in chamber 7 upstream of the jet 1 depends on the opening of valve 10, which depends on the pressure in chamber 25 connected by duct 27 to region 5 of the main air passage. The pressure in chamber 25 depends on the position of needles 32 and 29. The position  of the needle 32 depends on air temperature by way of bi-metallic strip 33 and the position of needle 29 depends on atmospheric pressure by way of a barometric capsule 30. This capsule may contain nitrogen so that needle 29 is also responsive to air temperature. Chamber 21 bounded by diaphragm 22 is connected to substantially atmospheric pressure via orifice 34 and to the pressure in the region 5 via an orifice 35, whose size responds to engine loading by means of a piston 37 which senses manifold pressure. Movement of the diaphragm 22 is transmitted to diaphragm 8 by a rod 23 and the diaphragm 22 is loaded via a spring 43 and stem 43A by a bi-metallic strip 43 which is responsive to engine ambient temperature and is heated during engine cranking and running by a heater 40, the loading on diaphragm 22 by the bimetallic strip 43 reducing as its temperature increases. A piston 45 responsive to manifold vacuum acts upwardly on strip 43 to weaken the air-fuel mixture once the engine has started and cause enrichment of the mixture as the throttle valve 5A is opened. A further thermally sensitive member 46 causes the throttle valve 5A to be opened during cold-start and warming up. In Fig. 1 (not shown), a valve (20) is provided between chamber 7 and a fuel pump (17) and is opened by manifold vacuum. Fuel vapour and air are returned to fuel tank (15) from a de-aerator (19) and orifice 14 of chamber 7 by a scavenge pump (16).
Patent GB-1138319-A (GB)
Title: Transmitter for hydraulic actuation, especially of clutches
IPC: F15B7/06
Filed: 1967-02-03
Abstract: 1,138,319. Clutch control; friction clutches. SCHOTTEL - WERFT JOSEF BECKER K.G. 3 Feb., 1967 [26 April, 1966], No. 5299/67. Headings F2C and F2L. [Also in Division F1] In an hydraulic clutch control comprising a hand-operated master cylinder 7 connected to a clutch-disengaging slave cylinder, wherein a valveless port 9 in the cylinder 7 communicates, in the clutch-engaged leftward position of the master cylinder piston 14, the cylinder 7 with an oil storage reservoir 6 for replenishing leakage losses and is shut off by the piston 14 during movement of the latter to effect clutch disengagement, the piston 14 is acted on against a return spring 16 by a cam roller 23 provided on the short arm of a lever 20, pivoted on a baseplate 1, and in order to adjust the stroke the piston 38 of the slave cylinder without altering the stroke of the lever 20, the port 9 is adjustable relative to the piston 14 and the lever 20, the cylinder 7, together with the reservoir 6, being mounted on the baseplate by screws 4 and slots 3 so as to be slidable and securable thereto. The piston 14 has seals 15 and cooperates with a control edge 11 of a cylinder groove 10 into which the port 9 leads. A reservoir filler screw 13 and an air release screw 19 are provided. A stop pin 24 determines both end positions of the lever 20, one of these end positions lying slightly past the lever/piston dead-centre. The master and slave cylinders are connected by a line 18, 47 having a valve 18 which provides unrestricted fluid flow in the direction for clutch disengagement but impedes such flow in the other direction to ensure soft clutch engagement. The clutch comprises discs 37 alternately connected to clutch members 30, 33 respectively connected to an input flange 32 and an output shaft 34 having a flange 35. The members 30, 33 are rotatably mounted in a fixed housing 31. The slave cylinder is formed in the fixed housing 31, the piston 38 of this cylinder being guided for axial movement by teeth or, as shown, pins 39. The piston 38 acts, through a ball-bearing 40, a ring 41 and pins 42, on a presser plate 43 which is loaded in the clutch engaging direction by springs 45 acting through bolts 44. The mechanical advantage of the lever 20 increases with rightward clutch-disengaging movement of the piston 14 so as to compensate for increasing load of the spring 16 during its compression.
Patent GB-606322-A (GB)
Title: Improvements in and relating to deflecting coils for cathode ray tubes
IPC: H01J29/76
Filed: 1946-02-21
Abstract: 606,322. Electric coils. WORONCOW, A., and BUCKINGHAM, J. Feb. 21, 1946, No. 5400. [Class 35] [Also in Group XL (a)] A deflecting coil for a cathode - ray tube comprising a cylindrical laminated core 1, of ferromagnetic material having a central bore through which the neck of the cathoderay tube passes, and slots parallel to the axis for accommodating the conductors 2 of a winding or windings between the teeth so formed, is characterised in that the teeth of the two end laminations are bent outwards at their inner ends 5, 6, to form an axial extension of the core.
Patent GB-359349-A (GB)
Title: Method of producing a hollow blade for steam and gas turbines
IPC: F01D5/18
Filed: 1931-02-20
Abstract: 359,349. Steam &c. turbines. SKODA WORKS, PLZEN, 37N, Jungmannova, Prague, and KALABEK, V., 15, Namesti Ceskych Bratri, Pilsen, both in Czecho- Slovakia. Feb. 20, 1931, No. 5460. Convention date, March 3, 1930. [Class 110 (iii).] A hollow turbine blade, through which cooling fluid may be passed, is formed by folding a machined blank, Figs. 5 and 6, about an axis H. The edges may be brought together to leave a gap for the axial discharge of the cooling fluid as shown in Fig. 7, or may have a deflecting lip S, Fig. 8. A serrated fixing root F and a shrouding ring N may be provided. Specification 319,622, [Class 110 (iii), Turbines &c.], is referred to.