baber/WOPTO huggingface dataset:
Patent GB-290743-A (GB)
Title: Improvements in or relating to fire alarm telegraph systems or apparatus
IPC: G08B25/00
Filed: 1927-02-21
Abstract: 290,743. Standard Telephones & Cables, Ltd., and McWhirter, E. M. S. Feb. 21, 1927. Fire-alarm systems.-In a. fire-alarm system in which the substations SS1 - - - SS6 are connected in a loop circuit supplied from a battery at the central station means are provided to earth the substation only if the loop circuit is incomplete. Fig. 2 shows the modification made according to the invention in the known system shown in Fig. 1. The signal is given by a code-wheel which actuates contacts a and is under the control of electromagnet L to prevent interference in known manner. If the loop is unbroken electromagnet A holds contacts b, c open, while in the event of a break electromagnet A is de-energised and contacts b, c, are successively closed. When the electromagnet receives current over one or other of contacts b, c this contact is held closed and signalling is effected as before through contacts a, but with an earth return circuit. On the completion of the signal all contacts return to normal. Fig. 7 shows one construction of the transmitter in which the armature F of the electromagnet A carries a gearwheel V which, in the retracted position of the armature meshes with the main gearing G. The wheel V carries a contact arm E adapted to wipe over contacts 1 - - - 6 alternate contacts being connected to one side of the substation and the remaining contacts to the other side, the arms E being connected to earth. In the event of the loop being interrupted, the arm E is rotated until the magnet A is energised. If at this point the arm E is in contact with one of contacts 1 - - - 6, a projection R on the lever T will engage, a notch in the disc D on the attraction of the armature to lock the wheel V; otherwise the wheel V will be returned to normal by the spring e. The armature is also locked by the pin P engaging a notch on the lever M. At the conclusion of the signalling an arm X attached to the locking lever Y of the box movement actuates lever T to release the armature and the wheel V. In a modification, an arrangement of clutches and levers is arranged to oscillate an earthed contact between contacts connected to the two sides of the substation and locking means under the control of electromagnet A is provided so that a similar circuit control is effected.
Patent GB-563320-A (GB)
Title: Improvements relating to trays for cigarette-ash and the like
IPC: A24F19/00
Filed: 1943-03-26
Abstract: 563,320. Smokers' ash-trays. SMALLBONE, P. H., and ABRAMS, G. March 26, 1943, No. 4962. [Class 130] An ash-tray has walls 1 flaring outwards to the lip 2 and provided with cigarette rests consisting of arms 3 having transverse grooves 4. The outer ends 5 of the arms 3 are higher than the remainder and clip over the lip 2. The top surfaces of the arms 3 may be cambered or otherwise shaped to prevent cigarettes from resting on them except in the grooves.
Patent GB-1363604-A (GB)
Title: Yarn spinning apparatus
IPC: D01H4/12
Filed: 1973-02-23
Abstract: 1363604 Supporting open end spinning rotors J M NOGUERA 23 Feb 1973 [2 Feb 1972] 4999/72 Heading DID The rotary member of an open end spinning machine which includes the fibre collecting surface is restrained against axial movement by the action of a gas jet. As shown a shaft 2 held magnetically in the nip of rollers 3 which generate thrust in the direction T is restrained by a jet in direction A from an orifice 7. The shaft will come to rest at an equilibrium distance D from the orifice 7. Shafts 2, 4 (not shown) or 5 may form the armature of a drive motor or shaft 5 can frictionally engage a drive wheel of a synchronous motor. Various suitable mountings and drives are illustrated in Specification 1360497.
Patent GB-423397-A (GB)
Title: Production of ammonium sulphate
IPC: C01C1/242
Filed: 1934-02-15
Abstract: In the production of ammonium sulphate by saturating sulphuric acid with ammonia, impurities contained in the saturation liquid are precipitated by the addition of phosphoric acid or a phosphate in a quantity not substantially more than is necessary for effecting this precipitation, whereby a coarse-grained ammonium sulphate is obtained.  Phosphates soluble in water or dilute acid may be used or a raw phosphate (e.g. mineral phosphate or bone meal) or an acid decomposition thereof, e.g. superphosphate, may be added.  Preferably the acidity of the saturation liquor should be controlled so as not to exceed 1,5 per cent.  The addition of phosphoric acid &c. may only be sufficient to precipitate a part of the impurities.  The crystals of ammonium sulphate may be removed, say continuously, together with the phosphate precipitate.  Specification 122,902, [Class 1 (ii)], is referred to.
Patent GB-1421392-A (GB)
Title: Method and mandrel for recording registration data
IPC: B60R13/10
Filed: 1973-05-04
Abstract: 1421392 Signs; indicators AUTOMATED REFERENCE CORP 4 May 1973 [10 May 1972] 5128/75 Divided out of 1421391 Heading G5C [Also in Division B6] The disclosure is the same as in parent Specification 1,421,391, the claims relating to a method of recording information and to a mandrel for indenting the cover element of the recording apparatus.
Patent GB-778599-A (GB)
Title: Improvements in or relating to devices for measuring the ratio between two forces and applications thereof
IPC: G06M3/08
Filed: 1956-02-21
Abstract: 778,599. Indicating apparatus; pressure gauges; dynamometers. SOC. D'ETUDES ET DE REALISATIONS MECANIQUES S.E.R.M.E.C. Feb. 21, 1956 [March 24, 1955], No. 5278/56. Classes 106 (2) and 106 (4). Two forces, e.g. the actuating forces of two indicating elements responsive to two variables, whose ratio is to be determined, are applied to two points A, B, Fig. 1, of a rigid body to cause it to move in a path defined by the rolling of a small circle passing through the two points A, B on a larger fixed circle with its centre at the point of intersection 0 of the two forces F<SP>1</SP>, F<SP>2</SP>, the diameter of the rolling circle being equal to the radius of the fixed circle so that the ratio F<SP>1</SP>/F<SP>2</SP> is a function of the angle α between the line O<SP>1</SP>-O and a datum radius, preferably OA of the fixed circle. As shown in Fig. 3, where the two forces act at right angles to each other, the forces are applied to a rod 2, where O<SP>1</SP>B = O<SP>1</SP>A = 001, i.e. a diameter of the rolling circle. In the embodiment of Fig. 4, the two forces are derived from pressure capsules 3, 8 responsive to the dynamic pressure and static pressure of an aircraft in flight respectively, their movements being communicated to the ends of the rod 2 by lever systems 5, 10, the rod 2 being pivoted at its mid point O<SP>1</SP> to a lever 1 in turn pivoted about an axis Z and attached to a spindle 15 rotating, through gearing 18, 19, a pointer 21 indicating the Mach number. In its application to a barometer or manometer comprising a single capsule the force F2 may be derived from a spring or a weight to compensate for the inherent elasticity of that capsule. The apparatus may be used for comparing an unknown force with F<SP>2</SP>, a known force derived from a spring.
Patent GB-1213812-A (GB)
Title: Improvements in clutch mechanisms
Inventor: SMALES HERBERT
IPC: F16D13/64
Filed: 1967-02-03
Abstract: 1,213,812. Friction Clutches. BBA GROUP Ltd. 24 Jan., 1968 [3 Feb., 1967], No. 5321/67. Heading F2C.  A friction clutch plate 5 for a single or multidisc clutch for an I.C. engine has an aggregate area of resin bonded asbestos friction material 23, on the or each frictional engaging surface, not greater than 30% and preferably between 10 to 20% of the swept area of the clutch. As shown, and in Figs. 4 and 5 (not shown), the clutch plates have clutch facing areas respectively totaling approximately 15% and 18% of the swept area, the clutch plates being radially split and resiliently deformed whereby the clutch pads 23, (25) are axially displaced each side of the plane of the clutch plate to provide a " mush " or cushioning effect during clutch engagement. The friction pads comprise proportions, by weight, of the following materials, asbestos fibre; powdered phenolic resin (200 mesh); carbon black; barytes; brass particles; cashew shell resin friction dust; graphite and copper powder.
Patent GB-914178-A (GB)
Title: Method of automatic control of a nuclear reactor
Inventor: KOVANIC PAVEL
IPC: G21C7/36
Filed: 1959-02-17
Abstract: 914,178. Controlling reactors. ZAVODY V.I. LENINA PLZEN NARODNI PODNIK. Feb. 17, 1959 [Feb. 18, 1958], No. 5409/59. Class 39 (4). Automatic control of a reactor 1 by control elements moved by servo drive 8 is effected in the phase of starting the sub-critical reactor by movement of a neutron-sensitive element 4 driven by servomotor 3 until the signal from 4 as compared in a reference circuit 6 with a signal from a source 5 ceases to apply a signal to 7 for the control of the servomotor 8. On achieving criticality the switch A is opened and the reactor is automatically controlled by movement to and fro of the sensitive element 4.
Patent GB-1171953-A (GB)
Title: Improvements in Static Invertor Control Circuits
Inventor: AINSWORTH JOHN DESMOND
IPC: H02M7/51
Filed: 1967-02-03
Abstract: 1,171,953. Inverting. ENGLISH ELECTRIC CO. Ltd. 31 Jan., 1968 [3 Feb., 1967], No. 5455/67. Heading H2F. A circuit for controlling the application of firing pulses to the converter elements of a polyphase inverter comprises a pulse generator having an output frequency dependent on the magnitude of a control signal which is a function of any difference between the actual and desired margin angle, whereby to control the firing angle in such a sense as to reduce this difference towards zero. The pulse generator 19, Fig. 2, feeds a ring counter 18, each stage 23 ... 28 of which provides trigger pulses for valves of a three-phase bridge inverter, Fig 1 (not shown). The output Fig. 3 (a) from each stage is also fed to a respect AND circuit 29, the other input to which Fig. 3 (h) is derived by limiting and inverting waveform 3 (g). This last mentioned waveform is derived from a differentiating current transformer (14, 15, 16), Fig. 1 (not shown), associated with the A.C. feeds to the valves. During coincidence between waveforms 3 (a), 3 (h) the output from AND circuit 29 switches on transistor 32 to charge capacitor 34. Between times of coincidence capacitor 34 discharges 3 (k). A further input to the control circuit. Fig. 3 (m) is derived from a transformer (12), Fig. 1 (not shown) across the A.C. supply, the point at which this passes through zero being a measure of the margin angle. This signal is limited and differentiated 39, 40 to provide a sampling pulse 3(p) which switches on transistor 38 to transfer the potential stored on capacitor 34 to capacitor 41, the potential transferred being dependent on the margin angle. Each capacitor 41 is connected to integrator 44 via a respective diode 43 which passes to the integrator the highest of the stored voltages, and the integrator output controls the frequency of the pulse generator. In order to minimize such changes in control voltage, the capacitors 41 may be returned to earth via a resistance network (47, 48), Fig. 4 (not shown).
Patent GB-540977-A (GB)
Title: Photographic material for colour photography
IPC: G03C1/805
Filed: 1940-03-27
Abstract: 540,977. Colour photographic stripping material. TULL, A. G. March 27, 1940, No. 5496. [Class 98 (ii)] Material for production of subtractive colour photographic records comprises a support, a silver halide emulsion coating, including a plurality of silver halide emulsion layers sensitive to different regions of the spectrum, and a stripping layer between the support, which may be transparent, and the emulsion coating which enables the coating to be stripped off the support as a unit during the processing. The stripping layer consists of a relatively soft gelatine, a wax or resin layer, a mixture of gelatine and a resin, or a mixture of gelatine and gum mastic. The stripping may be facilitated by soaking the material in warm water. The material may be an exposure or copy material, and may be exposed through the support, processed to colour, and stripped and transferred to a paper base. Specifications 523,058 and 540,975 are referred to.
Patent GB-608399-A (GB)
Title: Improvements in or relating to shelves, platforms and similar surface structures
IPC: A47B96/02
Filed: 1946-02-22
Abstract: 608,399. Tables etc.; shelves. GASCOIGNE CO., Ltd., G. H., GASCOIGNE, G. H., and DEACON, J. P. Feb. 22, 1946, Nos. 5551 and 31348. [Classes 52(i) and 52(iii)] Surfaced structures of platform or shelf form comprise a skeleton framework consisting of paired supporting bars and board elements provided at oppositely disposed sides with downturned edges for positioning purposes and preferably with downturned edges at the other sides for stiffening purposes. As shown a framework consists of pairs of supporting bars 1 clamped by means such as described in Specifications 431,960, 462,769, [both in Group X], 468,346, [Group XXV], and 511,190, to uprights 4 which are interconnected by transverse bars 2. Separate panels 5, 12 are provided with their short edges turned down at 7, 14 to overlap the supporting bars so that the panels bridge the spaces between the supporting bars 1. The adjacent long side edges 6, 15 are also turned down to stiffen the panels 5, 12. The gaps through the down-turned edges for the passage of the supporting bars 1 may be formed in various ways. In one form shown in Fig. 3, the ends of the downturned edges 6 are cut away so to provide a contoured bearing 11 to embrace the bar 1 while the other edges 7 are curved to embrace the outer surface of the bar 1. In other forms a rectangular or a triangular piece is cut out at the meeting place of the adjacent edges.
Patent GB-791720-A (GB)
Title: Improvements in or relating to hydraulic hand tools
IPC: H01R43/042
Filed: 1956-02-23
Abstract: 791,720. Jointing by stamping. AMP, Inc. Feb. 23, 1956 [Feb. 24, 1955], No. 5663/56. Class 83 (4). An hydraulic hand tool for crimping an electrical connector on to a conductor comprises a piston 12 carrying a crimping die 22, a ram 42 adapted to withdraw liquid from a reservoir via a non-return valve and apply it via a second non-return valve to the piston, the ram being driven by a pair of handles through toggle linkage, the piston, ram and the handles being coaxial. A spring-loaded ball valve 44 is disposed between the ram chamber and the piston chamber. The reservoir is an elastic fluid container 58 held in place in a barrel 50 by a ring 62 and a breather hole 64 in the barrel permits expansion and contraction of the elastic container. A second spring-loaded ball valve 70 allows liquid flow from the elastic container to the ram chamber 40. A guard 76 prevents the elastic container from blocking the ball valve 70 when the container is partially collapsed. The elastic container is filled through a cap 81 in the barrel 50. A manually operable release valve 108 permits liquid to by-pass valve 44 and flow into the elastic container and an overload-release valve 120 allows liquid to escape into the elastic container when the fluid pressure exceeds a predetermined amount. In operation, the tool is filled with liquid and a terminal is inserted between the dies. The release valve 108 is closed and the handles 94 and 96 are separated to draw liquid from the elastic container into the ram chamber and then closed to raise the ram and force the liquid through the ball valve 44 into the piston chamber to effect the crimping operation. A series of strokes may be necessary and a sudden decrease in the effort required to make a stroke denotes that the crimp is secure and that the overload release valve 120 has opened. To release the tool the release valve 108 is opened by rotating the screw 112.
Patent GB-275882-A (GB)
Title: Improvements in or relating to closures for water or the like bags
IPC: A61F7/08
Filed: 1927-03-01
Abstract: 275,882. Reach, M. B. Jan. 26, 1927, [Convention date]. Cooling appliances.- A watertight closure for a water or ice bag, as described in Specification 270,256, [Class 125 (iii), Stoppers &c.], and having an elongated neck adapted to be folded on itself, is effected by rolling the neck upon itself. The folded or rolled neck is held under either compression or lateral tension by tabs secured to it. To the lower end of an elongated neck 2, Fig. 1, comprising thicker portions or cross-bands a, b, c separated by thinner parts 14, 15, there are secured tabs 16 adapted to be folded over a metal stiffening plate 19 to secure it to the cross-band c. Each tab is formed with a slit 20, through which an end of the plate 19 is passed, and a perforation adapted to be passed over a stud 18 on the plate to secure the folded tab to it. The upper cross band a of the neck is rolled over or folded on to the middle band b and the two bands are then folded on to the face of the band c opposite the plate 19 ; perforated ears 23 on the band a are brought around the neck and secured to the studs 18 and longer ears 22 on the band bare secured above the ears 23 on the studs 18, each ear 22 being secured to both studs 18. In modifications, the plate 19 is secured in an elastic pocket on the neck 2 or a flexible strap, secured to short extensions on the neck, replaces the tabs 16. In another construction, tabs 16<a>, Figs. 10 and 11, formed with reduced necks, are threaded through slots 27 in a plate 19<x> having curved ends 27 conforming to the shape of the neck. When the bag is to be filled with ice, the plate 19<x> is slipped along the necks of the tabs 16<a> to allow the neck to be distorted for its passage.
Patent GB-1165394-A (GB)
Title: Water-Soluble Condensation Products containing an Epoxy Group and/or a Chlorohydrin Group and their production
Inventor: BRANDEIS HANS
IPC: C08G73/02
Filed: 1967-02-07
Abstract: 1,165,394. Nitrogen-containing condensation products. BADISCHE ANILIN- & SODAFABRIK A.G. 7 Feb., 1967 [8 Feb., 1966], No. 5790/67. Heading C2C. [Also in Division C3] Water soluble condensates containing a chlosohydrin group are prepared by reacting 1 mole of an alkylene polyamine with from 1 to 1À3 α moles of #Àcaprolactam, α being the number of amino groups in the polyamine. The resultant amino-containing intermediate is then reacted, in aqueous soln. or suspension with 1 to 2.5 moles of epichlorohydrin per mole of basic amino groups in the intermediate until a 15% aq. soln. has a viscosity between 30 and 100 cp. at 20‹ C., the soln. is adjusted to a pH of <6 to terminate the reaction. The first stage of the process may be carried out until no more water is eliminated. After reaction with epichlorohydrin the chlorohydrin group containing condensate may be dehydrochlorinated by reaction with an alkali, e.g. NaOH, to give an epoxy group containing condensate. The polyamine may have the formula in which R is a linear C 2-6  alkylene radical which may be substituted with amino or hydroxy groups, e.g. diethylene triamine.
Patent GB-807701-A (GB)
Title: Improvements relating to water cocks for domestic installations
IPC: F16K41/12
Filed: 1957-02-21
Abstract: 807,701. Valves. PUIGRREDON, J. A. Feb. 21, 1957, No. 5912/57. Class 135. A cock which is opened and closed by moving an obturating member 8 on to and away from a seating 6 in the casing of the cock, has a resilient sealing ring 10 which engages in a groove 11 in the plug and in a recess 12 in the casing and which tends to hold the obturating member away from its seating. The cock is operated by a rotatable cap 5 which is screwthreaded on the casing and abuts the upper end of the obturating member.
Patent GB-843037-A (GB)
Title: Improvements in containers for self-propelled missiles
Inventor: RANSOM RICHARD SUTTON
IPC: F42B39/00
Filed: 1958-02-25
Abstract: 843,037. Ammunition packaging and launching. SHORT BROS. & HARLAND Ltd. Feb. 20, 1959 [Feb. 25, 1958], No. 6054/58. Classes 9(1) and 92 A container for transporting self-propelled missiles comprises a rigid casing 10 housing the missile 11 and a base closure section, which can be secured to a launching support. The casing 10 has a domed nose 101, provided with lifting handles 104 and a shackle 103, and a skirt portion 102 attached by spring clips 13 to a sheet metal annulus 14. The annulus 14 is attached to the rim of a metal disc 141, which may be of aluminium alloy. The casing 10 is preferably made of moulded resin-bonded glass fibre. Resilient pads 12 space the missile from the casing. When the casing 10 is removed, i.e. before firing, the missile is still protected by a flexible envelope 15 of polythene or similar material divided into panels by seams 151 and attached to the forward ends of rip cords 152, which are taken around a hook 27 secured in a blow-out panel 25 at the centre of disc 141. An elastic cord 26 holds the envelope 15 to the annulus 14. A beam 16 projecting from the disc 141 ends in a slotted lug 161, which engages a pin 17 projecting from the missile. The beam has a socket 162 to receive a spigot 19 projecting from a launching stand 18 and provided with electric firing leads 20,20. To prevent the missile rotating on the stand, a flattened peg 24 on the stand is received in an opening in the plate 141, over which opening a canister 241 is sealed. A bracket 21 mounted on the beam 16 has lugs 22 bearing against the base of the missile and provides a mounting for shear pin linkage 23 securing the missile to the base of the container. When the missile is fired, the propellent gases eject the panel 25 and the resultant pull on the cords 152 rips the seams 151 of the envelope 15.
Patent GB-491163-A (GB)
Title: A process for the manufacture of orthotolylbiguanide from orthotoluidine and dicyanodiamide
IPC: C07C279/26
Filed: 1937-03-01
Abstract: o-Tolylbiguanide is prepared by reacting o-toluidine or a mineral acid salt thereof with dicyanodiamide in an aqueous medium at 70-100 DEG  C. in the presence of surplus acid and the product then treated with alkali after cooling.  Examples are given.  The Specification as open to inspection under Sect. 91 also describes the use of any aromatic amine or its derivative in place of o-toluidine.  This subject-matter does not appear in the Specification as accepted.
Patent GB-752471-A (GB)
Title: Improvements in or relating to moving iron or moving coil electrical measuring instruments
IPC: G01R1/12
Filed: 1954-03-03
Abstract: 752,471. Electrical measuring instruments. SIEMENS & HALSKE AKT.-GES. March 3, 1954 [March 14, 1953], No. 6177/54. Class 37. [Also in Group XIX] The movement or spindle assembly of a moving iron or moving coil electrical measuring instrument is air or eddy-current damped and is tension-suspended and the axial length of the movement or spindle assembly is at least 2¢ times and not more than 7 times the length of one of the tension strips. In the drawing the spindle 3 carries an air-damping vane 5 and moving iron 4 and the length of the spindle 3 in relation to the length of either of the tension strips 8 or 9 complies with the dimension requirements stated above. The spindle 3 also carries the pointer 1 and counter-weight 2 and the tension strips 8, 9 secured direct to spindle 3 are anchored at their other ends to swan-neck springs 6, 7. It is stated that the invention has application also in horizontal operating instruments.
Patent GB-217164-A (GB)
Title: Improvements in or relating to wheels for vehicles
IPC: B60B3/02
Filed: 1924-03-11
Abstract: 217,164. Wynne, E. W., and Hardman, K. T. March 11, 1924. Tyre attachments to rims.-The demountable part d<1> of a divisible rim is formed with studs e. which fit spaced bayonet slots b, b<1>, in the base of the fixed rim part a<1>. To obviate relative movement of the two parts, spaced plugs j, mounted on the front flange d of the rim part d<1> are adapted to enter passages c in the fixed rim part a'. A spring- controlled stud k on the plug moving in a bayonet slot h in a casing g being actuated by hand by means of a handle l.