baber/WOPTO huggingface dataset:
Patent GB-169164-A (GB)
Title: An improved machine for the manufacture of concrete building blocks
IPC: B28B1/087
Filed: 1921-09-13
Abstract: 169,164. I.D.E.M. Industrie Dell 'Edilizia Moderna, Soc. Anon. Sept. 18, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Shaking and jigging machines.-In a shaking- machine for mouldirg concrete blocks, the mould box B is clamped between a hopper A and a platform C which receives vibratory motion from an hydraulic pump L or other means. A base D carries a mould B<1> ready for filling, and a mould B<11> already filled.
Patent GB-261154-A (GB)
Title: Improvements in or relating to sound producing apparatus
IPC: H04R1/28
Filed: 1925-09-30
Abstract: 261,154. O'Donnell, P. S. Sept. 30, 1925. Loud-speakers; magnetic instruments diaphragms .-Relates to sound - reproducing apparatus such as telephonic loudspeakers. According to the invention, vibrations are transmitted from a primary vibrator to a secondary vibrator such as a sound-emitting diaphragm through two diamonds or other jewels in contact with each other. In the loud-speaker shown, which embodies tuned resonating gongs 13 and other features described in Specification 256,677, vibrations are transmitted from the armature 2 of an electromagnet 1 to a conical diaphragm 3 through two diamonds 4, 5, one of which, 5, is mounted on the end of a rod 6 which passes through a sleeve 8 and is connected to the diaphragm 3. The other diamond 4 is contained in a cup 7 secured to a glass disc 17, which is screwed to the armature 2, a washer of ebonite &c. being interposed. A spring 6a acting on the rod 6, presses the diamonds together. The vibrations of the armature are at right angles to the rod 6, and are transmitted to the rod by reason of the irregularities in the surfaces of the jewels in rubbing contact. The armature is mounted between pole-pieces 1<b>, and is carried by a resilient bridge 2<a>, one end of which is fixed to a base 1<c>, and the other end being adjustable, by means of a knob 2<b>, in a direction at right angles to the base. The base 1<c>, which carries the core 1<a> of the electromagnet, is cemented to a glass disc 10, supported in grooves lined with rubber &c. in feet 12 attached to the back of the casing of the instrument. Auxiliary diaphragms 16 are rigidly mounted on an extension of the sleeve 8, as described in Specification 259,103. The diaphragm 3 is made of silk, which may be mounted on a light framework and coated with a solution of celluloid and a layer of varnish; or it may be pleated. Its periphery is supported by strings 3<c>. The first Provisional Specification also describes a loud-speaker having a main conical diaphragm and auxiliary glass &c. diaphragms, and in which the electromagnet is enclosed in a small rectangular space formed by a truncated pyramid of thin wood, mounted on a base. The second Provisional Specification describes a loudspeaker similar to that last referred to, in which the casing, provided with tuned gongs, is a rectangular box having a slotted front. Adjustment of the contact between two diamonds through which vibrations are transmitted from the magnetic armature to the diaphragm is effected by means of a knob on the end of a rod which carries the main and auxiliary diaphragms, the rod extending through the front of the box.
Patent GB-1035485-A (GB)
Title: Casting pistons by a hot dipping process
Inventor: HUNT TOM OWEN
IPC: C23C6/00
Filed: 1962-02-26
Abstract: A ferrous metal insert is bonded to a light metal piston by first coating it with a second bonding metal, and then casting the piston body on to the bonding metal.  To coat the insert it is submerged in a bath of the molten bonding metal and rotated at such a rate relative to the bonding metal that the oxide is scoured from the insert. The bonding layer metal may be Al, Cu, Mn, Mg, Cr, Au, Ag or Ni or an alloy of Cu-Zn, Cu-Si, Cu, Al, Cu-Sn or Ni-P.
Patent GB-711784-A (GB)
Title: Improvements in and relating to the manufacture of fishing lines
IPC: A01K91/00
Filed: 1950-10-06
Abstract: A fishing line which may be braided or may be a nylon monofilament is coated with at least one coat of a material of different colour from the line and parts of the coating are abraded away to give an irregular mottled appearance for the purpose of camouflage.  Two or more coatings of different colours may be provided and parts of the top and undercoats are irregularly removed to provide a multicolour mottled appearance. Specification 704,073, [Group XXV], is referred to.
Patent GB-174037-A (GB)
Title: An improved electric time-switch
IPC: G04C21/22
Filed: 1921-09-15
Abstract: 174,037. Corlin, V. A. J. Jan. 13, 1921, [Convention date]. Clockwork actuation.-The switch contact member 11 is mechanically connected to a lever 12 formed with a tooth 14 which receives an impulse from a pawl 7 eccentrically mounted on the alarm spindle 4 of the clock 1. A lever 15 provides optional hand actuation bv lifting the pawl out of range of the tooth. When the alarm spindle rotates, the switch is closed to light a lamp 3. The device may be used for turning on electric heaters or motor-car lamps.
Patent GB-1429267-A (GB)
Title: Automaitc gain control circuit
IPC: H03G3/20
Filed: 1973-05-23
Abstract: 1429267 Automatic gain control RCA CORPORTATION 23 May 1973 [1 June 1972] 24532/73 Heading H4R In an optical scanning system which scans a reference and measuring target alternately and which adjusts the gain of a photomultiplier or amplifier to maintain the system gain constant, the amplifier output is compared with a reference and the difference signal is used to alter a counter which controls the gain of the photomultiplier or amplifier only when the reference target is being scanned. The beam from laser 12 scans a measuring target 30 and then a reference target 40; a target sensor also being illuminated while the reference is being scanned. The video signal from photomultiplier 50 and preamp 52 is applied to two comparators 70, 72 which define a range from V REF1  up to V REF2 . When the video voltage is outside this range gate 74 (lower) or 76 (higher) is enabled. At the next target pulse, a pulse is fed via whichever of gates 74, 76 is enabled to change the count in counter 84 by 1. This count is converted to an analogue signal which is used for AGC by digital to analogue converter 86. The pulse also fires one of the ONE SHOTS 80 or 82 which disable gate 88 for a period until the gain of the system has been altered. The two one shots may have different periods and the AGC is preferably applied to a photomultiplier. Comparators 85a and 85b detect when the counter is full or empty i.e. no more adjustment is available and signal a fault condition.
Patent GB-1077813-A (GB)
Title: Electric switch
IPC: A47L9/19
Filed: 1965-06-10
Abstract: A suction-operated switch (10) (see Division H2) is fitted to a vacuum-cleaner chamber containing an air-porous dust bag (22) such that reduction of pressure in the chamber due to the bag becoming full operates the switch to energise an indicator lamp (16) situated on the cleaner casing.
Patent GB-277705-A (GB)
Title: Improvements in gramophones
IPC: G11B17/00
Filed: 1927-09-19
Abstract: 277,705. Krauss, J. Sept. 17, 1926, [Convention date]. Driving.-Relates to gramophones of the kind wherein the driving spring is wound up by rotating the turntable. According to the invention, in addition to the usual train of gearing through which the turntable spindle is driven by the spring, a second train of gearing is provided and includes a slidable wheel capable of being shifted into or out of engagement with an adjacent wheel, so that when these wheels are in gear, rotation of the turntable winds up the spring. In the construction shown, the spring barrel 6 drives the turntable spindle 2 through the train 7 - - 10, a spring 16 coiled around the spindle 3 of the driving spring serving to hold the spindle 3 against reverse rotation when the driving spring has been wound up. The winding train comprises two wheels, one, 14, being fixed on the spindle 3, and the other, 13, being connected to the turntable 17 by a sleeve 18. The turntable and the wheel 13 are slidable on the spindle 2, downward movement, bringing the wheels 13, 14 into gear to enable, the spring to be wound, occurring when a rod 19 having a bent end 19<1> is pushed inwardly. Alternatively, the rod 19 may be dispensed with, the turntable and wheel 13 in this case being supported by a spring 20 until depressed by hand for winding. A fingerhole having a freely rotatable ring 22 therein is provided in the turntable for turning it, or a handle 23 may be pivoted on the turntable at 24, so that it can be projected up through a slot when required. The Specification as open to inspection under Sect. 91 (3) (a) describes also another construction, shown in Fig. 1 (Cancelled). In this arrangement, the spring barrel 5 drives the turntable spindle 3 through the train 20 - - 23. On the spindle 4 to which the inner end of the spring is attached is also fixed a wheel 8 which gears with a pinion 12, supported by a lever 10 which is pivotally mounted at 9 on the framework. Another lever 15 enables the lever 10 to be moved so that the pinion 12 can be put into or out of gear with a wheel 7 on the turntable spindle. The gears 7, 12 are out of engagement during the playing of the gramophone, but when they are moved into mesh, manual rotation of the turntable rotates the spindle 4 and winds up the spring. This subject-matter does not appear in the Specification as accepted.
Patent GB-720351-A (GB)
Title: Improvements in or relating to a trigger circuit and an electronic switch therefor
IPC: H03K3/12
Filed: 1952-10-02
Abstract: 720,351. Multi-stable state circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 2, 1952 [Dec. 21, 1951], No. 24696/52. Class 40 (6). An electronic switch comprises a gridcontrolled secondary-emission valve having two stable states of operation and two paths so connected to a source of positive-going pulses that the switch changes from its " down" to its " up " condition, which corresponds to low dynode voltage and high dynode voltage respectively of the secondary-emission valve or from its " up " to its " down " condition. Fig. 3 shows an electronic switch comprising a secondary-emission valve 10 which has a dynode 13 and collector 12 and which has a characteristic, Fig. 1a (not shown) exhibiting two stable conditions of operation when the dynode voltage is in the "up" (high voltage) or " down " (low voltage) condition. Initially valve 17 is cut-off and cathode follower 40 is in a state of low conductivity and a train of positive-going pulses Vi, Fig. 3a, is applied at the input terminal 25. The first pulse Vi causes crystal diode 47 to conduct to initiate a positive-going pulse Vo, Fig. 3a, at output terminal 48; diode 16 also conducts producing a voltage rise across the cathode follower load resistor 42 and driving the dynode voltage of valve 10 into the " up " (high voltage) stable condition Dv, Fig. 3a. When the first output pulse Vi ceases, the output voltage Vo is held at its higher value by the cathode follower 40. The next positive-going input pulse Vi causes diode 35 to conduct since the voltage J2, exceeds that at J3, Fig. 3a, valve 17 conducts and its drop in anode voltage returns valve 10 to the " down " low dynode voltage stable condition. The voltage across the load resistor of the cathode follower 40 is thus reduced and the output voltage pulse Vo is terminated, the circuit thus being restored to its initial condition.
Patent GB-438478-A (GB)
Title: Improvements in or relating to elastic couplings for shafts
IPC: F16D3/66
Filed: 1934-08-28
Abstract: 438,478. Shaft couplings. WICHA, A., 2, M³nchnerstrasse, Dresden, Germany. Aug. 28, 1934, No. 24743. [Class 80 (ii)] An elastic coupling comprises coupling members 1, 2 secured to the ends of the shafts to be coupled and formed with recesses between radial ribs 5 which form abutments for the resilient driving members. These are formed from thin circular or elliptical discs 6, each of which is inserted so as to lie in a recess of both the members 1, 2 with the major axis or a diameter, in the case of a circular disc, contained in a plane perpendicular to the axis of the complete coupling. In Figs. 1, 2, the discs are sharply bent, and the outer surface of the bend is directed towards the axis of the coupling and bears against a spherical thickening 7 formed on the bosses 3, 4. This thickening serves as a support for the discs in case the shafts are not coaxial. To prevent excessive movements of the discs axially, the outer walls of the members 1, 2 are preferably conical. Flat discs may be used and bear with point contact against the ribs 5. In a modification, Fig. 8, T-shaped bars 8 on coupling member 1 extend into coupling member 2 ; similar bars 9 on 2 extend into 1, and resilient discs 10 are inserted between the bars either loosely or under tension. The discs roll along the bars in case of misalignment of the shafts. Several resilient discs may replace each single disc.
Patent GB-1485989-A (GB)
Title: Filter with backflushing device
IPC: B01D29/23
Filed: 1975-05-23
Abstract: 1485989 Filter PLENTY GROUP Ltd 23 May 1975 [4 June 1974] 24772/74 Heading B1D An outward-flow cylindrical filter element comprising inner and outer perforate walls 6, 8 with a layer of needled polypropylene felt between them is cleaned by at least two axially and angularly spaced rotary nozzles, spring-loaded into contact with the inner wall 6 and connected by central duct 16 to solids discharge valve 14, which opens to atmosphere so that the pressure outside the element causes reverse flow through the felt opposite the nozzles. Duct 16 is rotated by motor 18, and as shown three nozzles 24 sweep axially overlapping sections of the element, the middle nozzle being on the opposite side of duct 16 from the other two. Nozzles can be spring- loaded at each axial end, but as shown the springs are provided round central spigots 22, and the ends of nozzles are slidably guided by pins engaging in straps 46 (Fig. 2 not shown). Each nozzle comprises a cloth-reinforced phenolic resin pad which engages wall 6 and may be independently spring-loaded. The pad may be in one piece with an axial slot or in two spaced pieces. An alternative pad comprises a slotted roller, which rolls across wall 6.
Patent GB-685520-A (GB)
Title: A device in sofas and the like
IPC: A47C17/165
Filed: 1951-10-24
Abstract: 685,520. Bed settees; bedclothes, securing. BRUNDIN, N. F. Oct. 24, 1951, No. 24816/51. Class 52(ii) A bed settee of the kind in which a back rest is arranged to be swuhg downwardly on to a fixed seat 4 to serve as a bed bottom and in which the bed bottom 9 is provided with rollers &c. 11 which, in the movement of the bed bottom 9 from one position to another, ride on fixed bow-shaped bars 6, is provided with a fitting 8, at each side of the bed bottom 9, having an open-ended slot 10 within which engages a pin 7 secured to the fixed frame, the pins 7 and bars 6 being so disposed and shaped that on swinging the bed bottom 9 to bed position the bed bottom is raised somewhat and also moved forwardly while on returning the bed bottom to settee position the bed bottom sinks into a recess 12 formed at the rear of the frame. If the bedclothes are in position they may be secured by bands 13 fastened at one end to the bed bottom 9 and to a rod 14 at the other, the rod 14 being held in a slot 15 in the bed bottom. The bands 13 and rod 14 are removed and placed in the recess 12 when the. bed bottom 9 is in bed position.
Patent GB-1211188-A (GB)
Title: Gas turbine engines
IPC: F01D5/08
Filed: 1969-05-15
Abstract: 1,211,188. Gas turbine engines - cooling. GENERAL MOTORS CORP. May 15, 1969 [Aug. 30, 1968], No.24825/69. Headings F1G and F1T. The invention relates to cooling of gas turbine engines, particularly to the cooling of a spacer member disposed between first and second stage rotor discs. The engine shown comprises a turbine rotor having first and second stage discs 23, 29 carrying blades 38, 39 respectively, the discs being spaced apart by a spacer member 49 comprising a web portion 51 and a rim 50 which abuts the adjacent rotor discs. The rotor discs are interconnected by face splines 30 and are secured by tie-bolts 31. The turbine comprises also inlet nozzle guide vanes 11, second stage nozzle guide vanes 15, a stator casing comprising parts 9, 10 bolted together, a diaphragm 27 upstream of the first stage rotor disc 23, a bearing support 19 supported by struts 18, and combustion equipment indicated at 26. The rim 50 of the disc spacer 49 is formed with ridges 55 which co-operate with the inner shroud 17 of the second stage nozzle guide vanes to form a labyrinth seal. Cooling air is supplied through openings 58 in the diaphragm 27 and passes through openings 59 below the blade roots 41 of blades of the first stage disc and then flows through the seals 55, 57 finally passing into the working fluid as indicated by arrows 61, Fig. 2, The spacer disc rim 50 is thus effectively cooled. The blade roots are of fir-tree form, the blades being located axially within the slots by means of keys 43 which engage within a circumferential groove 46 in the rotor disc and a recess 47 formed at one side of the blade root. Some of the spaces 59 below the blade roots 41 are closed off by T- shaped members 64 which are received in recesses 67 formed in the blade roots.
Patent GB-390059-A (GB)
Title: Improvements in and connected with devices for connecting scaffold poles and the like
IPC: E04G7/18
Filed: 1932-09-07
Abstract: 390,059. Scaffold clamps. RICH, I., Kent's Farm, Malthouse Lane, Hassocks; Sussex. Sept. 7, 1932, No. 24953. [Class 20 (ii).] A scaffold clamp of the kind described in Specification 374,366 comprising a U-shaped member 1, with a clamping plate 7 and screw 9, has a packing-piece 15 disposed between the poles and hinged to one side of the U-shaped member, and adapted to pass between the legs of the member. The packing-piece is grooved on one face in a direction parallel to the hinge to receive one pole, and the edges 19, 21 are grooved on the other face in a direction at right-angles to receive the other pole.
Patent GB-207902-A (GB)
Title: Improvements in or relating to pipes for use when immersed in chemical liquids
IPC: B21C37/15
Filed: 1922-09-15
Abstract: 207,902. Judson, F., (Representative of Judson, G. R.), Gibson, J. M., and Galloway, H. Sept. 15, 1922. Metal pipes; stopping pipes. - A pipe for injecting steam into chemical liquids particularly for dyeing, comprises a copper tube a which is covered with a lead sheath d and then bent to rectangular form. The copper tube is softened at the bend prior to covering and is loaded with a bending composition such as photographic soda and restrained by blocks during bending. Threaded holes arranged in one or more parallel lines or staggered, are then formed in the horizontal part and flanged nipples g are screwed therein and soldered, one or more holes h being finally drilled in each nipple. The nipples may be of an alloy of brass and zinc. A plug l having a square or other angular recess n is screwed and soldered to the end of the pipe and the lead sheathing is worked over it. The open end of the pipe is provided with a union o which may be lead-covered. In a dyeing vat the pipe is separated from material to be dyed, arranged in an endless band, by a perforated wall. Specification 7917/06 is referred to.
Patent GB-961936-A (GB)
Title: Process for the manufacture of vinyl chloride polymers and copolymers having improved processing properties
IPC: C08F14/06
Filed: 1960-07-18
Abstract: In the manufacture of polymers or copolymers of vinyl chloride a solution of 0.02 to 0.8% (by weight of its monomer(s)) of a specified polyglycol ether compound in the, or part of, the monomer(s) is added to an aqueous solution of a suspension agent and polymerization effected in the resulting suspension. The specified polyglycol ethers are those that are readily soluble in chloronated hydrocarbons and are obtained by oxalkylation of partial fatty acid esters of polyhydric alcohols or of polymers or copolymers containing carboxyl, hydroxyl or amino groups, or by esterification of polyglycols. Specified comonomers are vinyl esters, vinylidene chloride and esters of acrylic, methacrylic and maleic acids. Specified suspension agents are methyl cellulose, gelatine and partially esterified polyvinyl alcohol. The catalyst may be dissolved in the solution of the polyglycol ether in the monomer and may be benzoyl or lauroyl peroxide or azoisobutyronitrile; redox systems may also be used. Modified polymers Specified polymers which may be oxalkylated by reaction with an alkylene oxide or alkylene or polyalkylene glycol are homo- or copolymers of acrylic or methacrylic acid; copolymers of maleic acid (or a partial ester thereof with a C1-20 aliphatic alcohol) with compounds containing a vinyl group; vinyl alcohol homopolymers or e.g. styrene, vinylacetate or butylacrylate copolymers with a C1-20 ester thereof e.g. vinyl acetate or laurate, styrene, or vinyl toluene; and polyvinylamine.
Patent GB-442296-A (GB)
Title: Improvements in or relating to hoisting or drawworks apparatus for well drilling plant
IPC: B66D1/26
Filed: 1934-08-31
Abstract: 442,296. Well-drilling plant. NATIONAL SUPPLY CORPORATION, 120, Broadway, New York, U.S.A., and OIL WELL ENGINEERING CO., Ltd., Cheadle Heath, Stockport. Aug. 31, 1934, No. 25106. Convention date, Sept. 13, 1933. [Class 85] In a drawworks for well-drilling plant, the drive for the drum is transmitted through a transmission member on the drum shaft and adapted to be connected to or disconnected from the drum, and a second transmission member for driving the rotary machine is rotatably arranged on the drum shaft and is axially movable into or out of engagement with the other transmission member. A unitary framework 5 supports a shaft 3 driven by multiple belt from a unidirectional prime mover such as a Diesel engine ; a sleeve 11, supported on the shaft 3, may be driven from said shaft either directly through internal friction clutch 13 or reversely through bevel pinions 24 meshing with bevel gears 25, 26, secured to the sleeve 11 and shaft 3 respectively, the bevel pinions 24 being carried by a spider 23 adapted to be held by a brake band 28. The clutch 13 and brake band 28 are respectively applied in opposite positions of a lever 22. The sleeve 11, through double clutch 35 controlled by a lever 41 retained by a latch bar 42, drives through either of two chains 47, 48 a line shaft 2 carrying cat heads 49 ; the line shaft 2, through either of two chains 52, 53, sprockets 54, 55 and clutches 57, 58, controlled through treadles 59, 60, drives the drum shaft 1. The clutches 57, 58 are respectively one-way and two-way, whereby four forward and two reverse speeds are available for the drum 56. A sprocket 67 is slidable by a treadle 73 into engagement with the sprocket 55 and drives the rotary table through a chain. The drum brakes are controlled by a lever 66 movable axially of the drum, while a sprocket 44 on the shaft 3 drives a bailing drum, slush pump or other auxiliary means. In a modification, the engine drives a sleeve loose on the shaft 3 and driving the shaft 3 through similar forward and reverse connections, the two-speed drive to the line shaft being taken from the shaft 3.