baber/WOPTO huggingface dataset:
Patent GB-1435251-A (GB)
Title: Electronic contact switches
IPC: H03K17/96
Filed: 1974-02-13
Abstract: 1435251 Thyristor bi-stable circuits BROWN BOVERI & CIE AG 13 Feb 1974 [21 March 1973] 6572/74 Heading H3T [Also in Division G1] A touch-switch with a single plate providing ON/OFF action comprises a monostable touch unit I pulsing a bi-stable unit II controlling a trigger-circuit III for a thyristor switch section IV supplying a load 37. The A.C. mains input is at R and MP, and a half-wave rectifier 29 with a zener stabilizer 26 supplies the control circuits. Operation:- (i) monostable tetrode 3 is "switched on" by leakage resistance when plate 1 is touched and capacitor 8 in the cathode circuit charges producing a pulse across load resistor 9. The thyristor 3 dies out (fails to hold) when capacitor 8 is charged. (ii) bi-stable tetrode 20 has a diode switching network 15, 16, 17 at the input to its control gates so that the first pulse across resistor 9 passes through diode 15 (diodes 16, 17 being biased off by diode 19) to the cathode-gate causing thyristor 20 to conduct. This develops a voltage across the load resistors 23, 24. The voltage across resistor 23 blocks diode 15 and "switches on" diodes 16, 17, so that the next touch-pulse across resistor 9 passes through diode 17 to switch-off thyristor 20. (iii) The on signal across load resistor 24 cuts off normally conducting F.E.T. 25 so that voltage is applied to trigger 31 to fire the power switching thyristor 33. (iv) This switching section includes a supressor choke and capacitor 34, 35 and a cutout 36.
Patent GB-1269040-A (GB)
Title: Subrack and rack assembly
IPC: H05K7/14
Filed: 1970-02-11
Abstract: 1,269,040. Latches. INTERNATIONAL STANDARD ELECTRIC CORP. 11 Feb., 1970 [19 Feb., 1969], No. 6629/70. Heading E2A. [Also in Division H1] In a rack for mounting electric circuit boards the swivelling movement of a beam 4 is controlled by an L-shaped actuating lever 15. The free end of the leg 21 of lever 15 has a buttonhole 23 through which passes a bolt 19 screwed to the end of beam 4. The free end portion of the other leg 22 is introduced in a box 18 in which a spring 17 and a stud 24 hold the leg 22 in its locked position (Fig. 3) thus holding the circuit boards in the substrate. When beam 4 is to be swivelled to its unlocked position to enable the circuit boards to be removed, or plugged-in, lever 15 is pushed down, causing leg 21 to be displaced along the axis of the buttonhole 23, and also causing a snap action movement of leg 22 into the position indicated in Fig. 4. This snap action is caused by the spring 17 pushing down onto the leg 22 when it is initially disengaged from the stud 24 by the pushing action on lever 15.
Patent GB-992030-A (GB)
Title: Improvements in nuclear reactors
IPC: G21C11/08
Filed: 1962-02-21
Abstract: 992, 030. Reactor pressure vessels. SOC. ANGLO-BELGE VULLCAIN S. A. Feb. 21, 1962 [March 9, 1961], No. 6689/62. Heading G6C. The cover of a nuclear reactor pressure vessel is reinforced by material which forms part of the cover and which projects downwards from the cover under surface into the reactor space. The reinforcement reduces the volume to be occupied by heavy water moderator and provides thermal shielding.
Patent GB-104787-A (GB)
Title: Improvements in Spring Mattresses and the like.
Inventor: HILTON JOHN
IPC: A47C27/045
Filed: 1916-05-11
Abstract: 104,787. Hilton, J. May 11, 1916. Mattresses dc.-A mattress, bolster, cushion, or the like is formed by assembling a number of slats b having mounted thereon, upon each side, a series of helical springs a suitably attached to the slats. The whole is enclosed in an outer casing c. Reference has been directed by the Comptroller to Specification 8789/04.
Patent GB-139825-A (GB)
Title: Improvements in and relating to aircraft
IPC: B64D47/04
Filed: 1916-05-11
Abstract: 139,825. Jenkins, F. C. May 11, 1916. Sounding-apparatus.-An apparatus for determining the height of aircraft above the ground comprises means for projecting two or more separate beams of light on the ground so as to cause illuminated patches the relative position of which indicates the height above the ground. Fig. 1 shows a form in which two lamps a, b project parallel beams of light vertically downwards, and a third lamp c projects a beam of light at an angle to these so that it intersects the beam from a at the ground level when the aeroplane is resting on the ground, and also intersects the beam from b at a predetermined distance below the aeroplane. In order to distinguish the various patches of light, they are of different shape or colour. The projector c for the inclined beam of light may be mounted in a curved slot d the centre of which is the point at which its beam intersects the beam from the projector a, so that the distance at which its beam intersects that from the projector b may be adjusted, an illuminated scale being provided to indicate this distance. An arrangement of mirrors or a view-finder is provided by which the illuminated patches and the scale may be observed. The projector, Fig. 3, comprises a tube c carrying an electric lamp, lenses i, j, and a diaphragm m, the shape of which is projected to determine the shape of the illuminated patch, and may also be provided with means by which the scale e is illuminated. The pointer f indicates the position of the projector in its slot. The apparatus may be mounted on self-levelling apparatus, or may be provided with means by which it may be levelled by the pilot.
Patent GB-374127-A (GB)
Title: Improvements in tins, boxes and like containers
IPC: B65D43/00
Filed: 1931-03-05
Abstract: 374,127. Vacuum closures for boxes and cans. BARRINGER, WALLIS, & MANNERS, Ltd. and MANNERS, R., Mansfield, Nottinghamshire. March 5, 1931, Nos. 6820, 8804, 13334, and 19638. [Classes 18, 66, and 125 (iii).] A box, can, &c., comprises a body portion 1 and a lid 3 with a sealing ring 5 interposed between them. The body portion has an inturned flange 8 and the lid a depending wall 10 which is inturned at the lower edge 11 to co-operate with the body in forming an airtight joint. The wall 10 is flush with the body of the box, and the flange 8 has a vertical wall 9 at the inner edge thereof, which engages with the part 11 of the lid. A groove 12 is provided at the lower end of the wall 9 which accommodates the part 11 when the sealing band has been removed. The lid may be hinged to the body of the box, the interengaging parts of the hinge being integral with or attached to the lid and body. The box may be provided with a liner 18, the upper portion of which projects from the body and replaces the wall 9. In a modification the neck of the body is not integral therewith, but is attached thereto. The box may have fixed or removable partitions, and the lid may be embossed or recessed.
Patent GB-512940-A (GB)
Title: Improvements in sterols of the male sex hormone type
IPC: C07J75/00
Filed: 1938-03-04
Abstract: 512,940. Sex hormones. PARKE, DAVIS, & CO. March 4, 1938, No. 6839. Convention date, March 12, 1937. [Class 2 (iii)] A new sterioisomer of allopregnanediol which is designated as allo-pregnanediol-3#-20# is prepared by catalytically reducing allopregnanedione. The new diol may be used to prepare a new allo-pregnanol-20-one by diacylation, followed by partial saponification, oxidation, and saponification. From the allopregnanolone so produced there may be further prepared androstandione by dehydration and oxidation of the ethylene compound. The allopregnanedione which serves as the starting material for the process of the present invention is itself preferably prepared by oxidation by chromic anhydride of the mixture of pregnanediol and allo-pregnanediol obtained as neutral carbinol residue in the aqueous alkaliorganic solvent distribution method of Doisy from human pregnancy urine, andseparation from the oxidation mixture of the less soluble fraction. In an example, allo-pregnanedione prepared as above is reduced by shaking with hydrogen at 45 lbs. pressure for 75 minutes in glacial acetic acid solution in the presence of a platinum oxide catalyst. The allo-pregnanediol-3#-20# so produced is converted into its diacetate by treatment with acetic anhydride and then partially saponified by methyl alcoholic potash to give allo-pregnanediol-3#-20#- monoacetate 20. This compound is then oxidized with chromic oxide in acetic acid solution to 'the acetate of allo-pregnane-ol-20- one-3, which is saponified to the allo-pregnanolone by alcoholic potash. The dehydration of the allo-pregnanolone so produced is carried out by refluxing with freshly fused zinc chloride in acetic acid solution. The ethylene compound is isolated by extraction with chloroform, and decomposed with ozone to give androstanedione. Specification 431,833 is referred to.
Patent GB-1222211-A (GB)
Title: Apparatus for locking and unlocking a vehicle hand-brake
Inventor: TAKADA SYUNICHI
IPC: B60T7/12
Filed: 1967-02-13
Abstract: 1,222,211. Vehicle controls. S. TAKADA. 13 Feb., 1968 [13 Feb., 1967], No. 6842/67. Heading B7H. [Also in Division F2] In a hand brake arrangement for automobiles (Division F2), an electric motor 10 is provided for moving a brake applying-locking rod 6 to a brake applying position and a releasable locking element, in the form of a pawl 16 engaging with ratchet teeth 15 on the rod 6, is urged by a spring 20 to hold the brake in the applied position, the operation of the electric motor 10, which moves the rod 6 via gearing 9 and a pinion 8, being under the control of a switch 2 connected to the vehicle ignition switch (not shown) such that when the engine is turned off the electric motor 10 is operated to apply the brake. Turning the ignition switch on energizes an electromagnet 17 which releases the pawl 16 out of engagement with the ratchet teeth 15 against the action of the spring 20. By turning the ignition switch off, the contact arm 3<SP>1</SP> of the switch 2 engages contact 4 to drive the electric motor 10 such that the rod 6 is moved to the brake-applied position and held by engagement of the pawl 16 with the ratchet teeth 15 without it being necessary to actuate the hand brake lever in the usual manner. During stopping, or during an ascent while driving, by depressing the clutch pedal, a switch S 1  connected therewith is closed and the electric motor 10 is driven so that the brake is applied. During starting, the brake is gradually released as the clutch is let in and the speed is increased to prevent the automobile from running backwards on a hill. Projecting pieces 11 on the rod 6 are adapted to contact a microswitch S 1  which operates to connect the switch arm 12<SP>1</SP> of the switch S 1  to a contact 13 to stop the motor 10 and illuminate a pilot lamp L. A further microswitch S 5  is closed when the rod 6 is moved against the action of its return spring 5 and holds the pawl 16 out of engagement with the ratchet teeth while the clutch pedal remains depressed. A switch S 2  is adapted to be actuated from the speedometer cable so that when the vehicle speed reaches a predetermined value, the switch S 2  is opened and the small current flowing through the electric motor 10 via a variable resistor R is interrupted. An overriding manual control of the hand brake lever mechanism is achieved by movement of a slider 22 connected for operation by a hand-operated cable 21 such that the nose 25 of the slider 22 will contact a protruding member 24 located on the rod 6. Hand control of the electrical circuit may be achieved by the provision of a push-button switch S 6  to drive the motor 10 and a push-button switch S 4  for control of the electromagnet 17. The ratchet teeth 15 may be adjustable on the rod 6 to compensate for wear or elongation of the brake mechanism. S 7  is a switch which is closed by the foot brake and is connected between the junction point of switches S 2  and S 3  and contact 4 of the switch 2.
Patent GB-1070151-A (GB)
Title: Printed-circuit digital encoder
Inventor: MASKENS GEOFFREY DAVID
IPC: H01H19/58
Filed: 1965-02-17
Abstract: 1,070,151. Selective signalling. SOLARTRON ELECTRONIC GROUP Ltd. Feb. 16, 1966 [Feb. 17, 1965], No. 6886/65. Heading G4H. In a shaft-position digitizer two diametrically opposite patterns 12, 13, each extending over 90 degrees on a printed circuit board 11 are sensed by wipers 19, 20 carried by a disc 18 which is registered with the board 11 by a pin 17 and axially spaced apart therefrom by three hemispherical nylon spacers 21, 22, 23.
Patent GB-993437-A (GB)
Title: A circuit for producing positive or negative pulses from a d.c. source
Inventor: WRIGHT MAURICE JAMES
IPC: H03K3/57
Filed: 1962-02-22
Abstract: 993, 437. Bridges. JOSEPH LUCAS (INDUSTRIES) Ltd. Jan. 18, 1963 [Feb. 22, 1962], No. 6897/62. Heading G1U. [Also in Division H3] A bridge comprising equal resistors 10, 12, 13 and a variable resistance device 11 has diagonal output terminals 14, 15 and is energized by relaxation oscillations developed by a resistor 7 in series with a D.C. source and a four-layer breakdown diode to one input diagonal and a capacitor from the diode-resistor junction to the other input diagonal, whereby successive pulses are applied to the bridge, to develop pulses at 14, 15 which are negative or positive dependent on the resistance value of 11 being above or below the value of resistance of 10, 12, 13. A diode 16 supplemented by a diode 17 in series with capacitor 9 shunts device 11 so that the capacitor charging path does not include the load across 14, 15; the latter being returned to earth and the negative of the D.C. supply. Device 11 may be a switch, transistor, resistor, diode, photo-cell, or thermistor.
Patent GB-1378515-A (GB)
Title: Electrooptical lens position detection apparatus
IPC: G01M11/02
Filed: 1971-03-15
Abstract: 1378515 Photo-electrie position determining SIRA INSTITUTE 15 March 1972 [15 March 1971] 6903/71 Addition to 1147521 Heading H4D Apparatus for detecting the position of a lens on a rotatable support comprises a system for illuminating the lens and a photo-cell responsive to illumination reflected from the lens and producing a signal indicating the position of a surface of the lens facing the illuminating system with respect to the axis of rotation of the support, the illuminating system comprising a light source, a stationary mask having an aperture positioned in front of the source, an objective lens arrangement for projecting an image of the aperture on to the lens and a beam splitter arranged to pass light from the source on to the lens via the objective lens arrangement and to pass an image of the aperture reflected from the lens and passed back through the objective lens arrangement on to the photo-cell. A light source 3 illuminates an aperture in mask 4 via lens 12 and the aperture image is passed to lens 1 via objective lens 13 and beam splitter 14. The reflected image is passed by beam splitter 14 on to photodeteotor 10 via mask 9. The photodetector produces signals indicative of the position of lens surface 7 with respect to the rotation axis of support 2 and the lens is adjusted manually until the signals indicate coincidence of the lens surface 7 and support axis. The image may be focussed on to the bottom lens surface. Figs. 2 to 7 (not shown) illustrate various alternative arrangements of the illuminating system. Fig. 8 (not shown) illustrates an electronic circuit suitable for displaying the signals from the photodetector on a cathode-ray tube. The signals may appear as a circle, the radius of which is proportional to the centring error. The signals may alternatively be fed to meters, each meter giving the error in a particular direction.
Patent GB-512520-A (GB)
Title: Improvements in machines for testing the hardness of materials
IPC: G01N3/42
Filed: 1938-03-05
Abstract: 512,520. Testing hardness of materials. AVERY, Ltd., W. & T., and YATES, H. March 5,1938, No. 6912. [Class 106 (ii)] In a loaded-lever-operatedindentation machine of the type described in Specifications 353,729 and 422,972 the penetrator carrier element 4 is entirely free of contact with its normal support, so that during a test 'the element has only three points or lines of contact (one) where the penetrator;8 contacts the test piece, (two) where the element 4 contacts the knife edge 11 of the main weighted lever, and (three) at its upper end where the motion of said element is transmitted through a transfer lever 15 to the automatic indicating mechanism 16, the three said contacts being capable of fine .adjustment into vertical alignment through the axis of the element 4. The element 4 is normally supported on conical bearing seats 5a, 6a and has a bearing block 10 to engage the knife edge 11 of the lever 12. The load 12a is applied by the lowering of the support 12b as described in Specification 422,972. A stool 4c attached to the top.of the element 4 contacts with a cross pin 13a mounted in a saddle 13 pivotally mounted at 14 on the lever 15 pivoted at its right end at one end 13c of the saddle contacting a leaf spring 18 and the other end 13b carrying a set screw 17 for rocking the saddle 13 about the pivot 14 to adjust accurately, the point of contact between the stool 4c and the pin 13a. The penetrator element 8 is removably coupled to the carrier 4 by a cam and ball locking sleeve connection 9 of known type.
Patent GB-744911-A (GB)
Title: Improvements in and relating to electrically operated burglar or theft alarms
IPC: H01R11/30
Filed: 1953-03-13
Abstract: 744.911. Switch cases. FURNESS, H. W. March 11, 1954 [March 13. 1953; May 15, 1953], Nos. 6918/53 and 16085/55. Class 38(5) [Also in Group XXXVIII] A burglar alarm for use in protecting safes, comprises a casing incorporating magnetic elements whereby it, may be attached to the wall of a safe and including electrical contacts which are held closed by the attachment of the casing to the safe but which are opened upon movement of the casing. Fig. 2 shows a sectional view of the casing together with the contact mechanism while Fig. 3 shows a view from beneath. Magnetic elements 7 are let into the base of the casing 6, which may be made of metal, ceramic or a plastic material while the contact mechanism includes a plunger 15 which is urged upwardly by the spring 16 against the action of compression spring 23 to complete the circuit between contacts 20. 21 when the casing is placed in position upon the wall to a safe. Upon the casing being removed from the safe or upon being moved sideways, the pressure on the plunger 15 due to the spring 16 is released and the plunger falls opening the circuit through the contacts 20, 21 and so sounding an alarm. It is stated that the magnetic elements may comprise either permanent magnets or electromagnets and that the assemblies may alternatively comprise normally-open contacts which are closed upon movement of the casing.
Patent GB-496941-A (GB)
Title: Improvements in safety cut-off devices for gas or other pipes
IPC: F16K17/00
Filed: 1937-03-09
Abstract: 496,941. Safety cut - off valves; packing. GUTMANN, O. March 9, 1937, No. 6969. Convention date, March 10, 1936. [Class 135] [Also in Group XVII] A safety cut-off valve for gas and other pipes is actuated by a loaded diaphragm b of gasproofed balloon fabric secured to the casing by a ring k and screws m. A removable cover f which may be taken off while the device is working to inspect the diaphragm is secured to the ring k by screws m<1>. The valve member a which is clamped to the diaphragm is hemispherical in form and co-operates with a sharpedged seat, being guided by a depending spindle working with play in a spider arranged below the valve seat. The inlet part of the casing is angularly adjustable on the outlet part, being clamped thereto by a cap nut l screwed upon a spigot part o carried by the outlet portion. To enable the valve to reopen automatically when pressure conditions have been restored, a byepass passage d is provided, said passage being fitted with an interchangeable calibrated orifice plate fitted with a cleaning pin. The removable cover is fitted with a screwed ferrule g adapted to receive a ventilating pipe q or a removable pin adapted to hold the valve to its seat during transport. A pointed projection u on the valve member enters this ferrule when the valve is open.
Patent GB-650584-A (GB)
Title: Improvements in and connected with means for mounting devices, such as electrical accessories
IPC: H01R33/00
Filed: 1948-03-06
Abstract: 650,584. Screw fastenings ; bolting. CRABTREE & CO., Ltd., J. A., HILL, W. E., and MIDDLETON, E. March 6, 1948, No. 7004. [Classes 44 and 89(i)] [Also in Group XI] A screw fastening device for securing articles such as indicator lamps to the rear of a sleeve introduced into a panel or like supporting means from the front, has a nut that has a hooked engagement with the sleeve. The sleeve a, Fig. 1, is knurled at b, to facilitate a force fit engagement in a hole in the panel as limited by a flange, and has a slot g with lateral extension g<1> to receive the nut h. This is inserted in the inclined position and then turned so that the part h<2> extends under the bottom of the flange holding the top part in the slot g' with the lugs h<1> behind the sleeve. Bolts k pass through holes n in the lampholder base, which also receive insulating sleeves m. The bolts pass with clearance through the part h<2> to engage lipped holes h<4>. In a modification the sleeve is retained in the panel by a nut.
Patent GB-213412-A (GB)
Title: Improvements in or relating to fastening means for garments
IPC: A44B13/00
Filed: 1923-03-12
Abstract: 213,412. Hardy, T. March 12, 1923. Fastening wearing- apparel.-Hooks and eyes are made of wire bent to the shape shown in Fig. 3 with the ends overlapping to facilitate their attachment to and removal from a band of -elastic g or the like placed in a hem f of the garment. Figs. 13 and 14 show a modified form of the hook and eye. Instead of an eye of the form shown, a plain ring of metal or bone may be sewn to one end of the strip g to co-operate with a detachable, hook of the form shown at the other end.
Patent GB-871347-A (GB)
Title: Gasoline composition
IPC: C10L1/30
Filed: 1958-03-05
Abstract: A gasoline composition contains at least 1 gram of lead as an organolead compound per U.S. gallon of gasoline and a non-ionic manganese polycarbonyl compound having the empirical formula RxMn(CO)v where R is an organic radical, x is from 0 to 7 and y is from 2 to 5, in an amount such that the manganese concentration is from 0.5 to 15% of the lead concentration.  The manganese compound may be manganese carbonyl, methyl manganese pentacarbonyl, benzoyl manganese pentacarbonyl, phenyl manganese pentacarbonyl or acetyl manganese pentacarbonyl, and may be present in an amount of 0.01 to 6 grams of manganese per U.S. gallon.  The lead compound may be tetraethyl lead, tetramethyl lead, tetrapropyl lead, tetraphenyl lead or tetratolyl lead, and may be present in an amount of 0.1 to 8 grams of lead per U.S. gallon.  Halogenated hydrocarbons such as ethylene dibromide and ethylene dichloride may also be present.  Examples are given.
Patent GB-1455681-A (GB)
Title: Means of keeping a ship afloat during disasters
IPC: B63B43/10
Filed: 1975-01-30
Abstract: 1455681 Keeping damaged ships afloat B K HENRIKSEN 30 Jan 1975 [31 Jan 1974] 7073/75 Heading B7S Cavities or niches 9 in the side walls of a ship contain inflatable bags 1. The cavities have shutters 7 flush with the side of the ship and hinged so that when open they lie on the surface of the ship's side. In the embodiment shown hinges 8 are vertical and there is an open space 5 on each side of the ship to enable passengers to disembark.