baber/WOPTO huggingface dataset:
Patent GB-457112-A (GB)
Title: Improvements in or relating to miniature pianos
IPC: G10C3/16
Filed: 1935-05-20
Abstract: 457,112. Pianofortes. EAVESTAFF & SONS, Ltd., W. G., Ashfield Road, Finsbury Park, London, and BRIDGES, S. R., 2, Poynter Road, Bush Hill Park, Enfield, Middlesex. May 20, 1935, No. 14750. [Class 88 (ii)] In a front-action miniature upright pianoforte the wippen 20 hangs vertically from a pivot 21 on the hammer rest-rail 17. In the Figure the wippen is acted on by the arm 10 of a bell-crank lever connected to the key 3 either directly or by an adjustable link 11. The set-off 25 for the horizontal jack 24 is adjustably carried by the wippen. The check 27 for the balance 15 is adjustably carried by the wippen on a pivoted arm 28. The damper 19 is actuated by a push rod 29 guided at 32 and adjustably connected to the wippen at 31. In Fig. 2 (not shown) the wippen and bell-crank lever are combined as one member, and in Fig. 3 (not shown) the wippen has an integral arm forwardly extending from the pivot, directly acted on by a strut attached to the underside of the key which is pivoted at its inner end. The construction in Fig. 3 (not shown) may be modified by employing a bellcrank lever formed separately from the wippen. Specification 419,131 is referred to.
Patent GB-1097428-A (GB)
Title: Improvements relating to fuel cells
IPC: H01M8/24
Filed: 1965-04-07
Abstract: 1,097,428. Fuel cells. SOCIETE GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). April 7, 1965 [April 10, 1964], No. 14773/65. Heading H1B. A battery of fuel cells includes spaced electrode plates e.g. 1, 12, each of which comprises a marginal supporting part and a central part 2 embossed on both sides (Fig. 2, not shown). Each electrode is a bipolar electrode and may comprise a metal support coated on opposite sides with a suitable metal. Each cell of the battery comprises an electrode plate 1 with electrolyte channels 3, 4, 5, 6 in its margin, a plastics spacer 9 which has two vertical channels which correspond to the channels 5, 6 of electrode 1 and two horizontal castellated margins, a semipermeable membrane (e.g. ion exchange membrane) 8 with channels identical with those of electrode 1, a second spacer 11 which is identical to spacer 9 but rotated 90 degrees with respect thereto, and an electrode 12 identical with electrode 1. One face of each electrode of this cell forms part of an adjacent cell. A stack of cells is clamped between blocks 13, 14 and electrolytes are circulated through connections 15, 16 and 17, 18 one of the electrolytes being circulated between the frame 9 and adjacent electrode 1 of each cell via the horizontal channels and the other electrolyte being circulated between the frame 11 and electrode 12 of each cell by the vertical channels. Such a battery necessitates only one regenerator in a redox system instead of one per cell. Cooling fins may be provided on the electrodes.
Patent GB-315948-A (GB)
Title: Improvements in wardrobes
IPC: A47B61/00
Filed: 1928-05-21
Abstract: 315,948. Norval, J. May 21, 1928. Cabinets. - A wardrobe consists of a square or triangular frame having a top and a door on each side, the clothes being hung on the doors. Stops D are attached to the doors near their edges to protect the clothes from the hinges and are notched to receive rails. A mirror C is attached to a rod pivoted vertically in the middle of the wardrobe.
Patent GB-1501988-A (GB)
Title: Connection means for bundles of optical fibres
IPC: G01V8/16
Filed: 1975-04-10
Abstract: 1501988 Connecting light guide bundles SOURIAU & CIE and SOC D'ETUDES ET D'APPLICATIONS TECHNIQUES 10 April 1975 [12 April 1974] 14800/75 Heading G2J A connection for releasably connecting the ends of two optical systems (at least one of which is a bundle 16 of optical fibres divided at one end into several branches 16a, 16b) comprises two outer casings 1, 8 which are releasably co-operable, each outer casing containing an inner member 23, 11 for supporting the end of the respective optical system. The two inner members 23, 11 have profiled cooperating ends (e.g. shoulders 28, 29 and tongues 21, 22) which accurately position and locate the ends of the two optical systems against displacement in both axial and transverse directions. In Figs. 1 and 2, the inner member 23 holds a phototransistor 25 and an electro-luminous diode, (26), (not shown) opposite the two branches 16a, 16b, respectively, of the fibre bundle 16 whose other end 29' is situated opposite a reflector 30. When the reflector 30 is in position, light emitted by diode 26 travels down branch 16b, down bundle 16 to the reflector and then back to the phototransistor 25 via branch 16a. The output of phototransistor 25 can thus be used to indicate remotely the presence or absence of a reflecting surface at end 29' of the fibre bundle. The bundle may be divided into more than two branches.
Patent GB-1101404-A (GB)
Title: Improved system imparting transverse stability to a towed vehicle
IPC: B60D1/34
Filed: 1966-04-04
Abstract: 1,101,404. Vehicle stabilizing systems. A. A. MALHERBE. 4 April, 1966 [13 April, 1965], No. 14802/66. Heading B7T. A system imparting transverse stability to a caravan towed by a towing vehicle, comprises a steel rope, chain, or cable 10, removably secured symmetrically at 11, 13 by chains 12, 14 or directly to the towing vehicle 1 (or to the caravan 2), an energy absorbing unit 4 mounted on the caravan 2 (or on the towing vehicle), and activating means causing the unit 4 to be activated by the rope 10 when the vehicles are moved transversely relative to each other. In an embodiment, the unit 4 comprises a disc or drum brake 9 rigid with a shaft 8 on which is mounted a pulley drum 6 having a helical groove therein engaged by the rope 10, and forming the activating means. The rope 10 includes a turnbuckle 21 and springs 22, 24 and 25. In another embodiment, the activating means comprises a pulley engaged by the rope 10 and rotation of the pulley is frictionally restrained by a resilient dished washer acting on the pulley, and adjustably compressed by a milled thumbscrew screwed on to the pulley shaft. In other embodiments, the unit 4 comprises a propeller rotating in an oil reservoir, the drum 6 and the pulley 4a are replaced by sprockets, the chains 12, 14 are connected into the rope 10 between 4 and 4a, and the pulley 4a is omitted.
Patent GB-553105-A (GB)
Title: Improvements in or relating to electric circuit breakers
IPC: H01H33/04
Filed: 1941-11-18
Abstract: 553,105. Automatic circuit-breakers. JOHNSON & PHILLIPS, Ltd., and BLOOME, J. Nov. 18, 1941, No. 14822. [Class 38 (v)] The "making-current release" of a circuitbreaker comprises an armature which is movable under the influence of flux generated by an existing current-carrying part of the circuitbreaker or conductor leading thereto, to effect tripping. The movable bridging-contact 1 of an oil circuit-breaker is closed by counter-clockwise rotation of lever 11 about shaft 10 when a handle-actuated shaft 9 is rotated, and is opened by upward thrust of rod 12 by hand or an overload coil, so as to deflect a latch 13. An extension 23 thereon is also engageable by a lever 20 rotatable about pivot 21 by a rod 19 which is pivoted to part 18 of an armature structure 15 acting as making-current release. The structure comprises, in a three-phase switch with conductor studs 4 mounted in two rows, a pair of armatures 15 mounted in the gaps between the studs 4 of a row and carried on the same shaft 16, which is rotatable in bearings 17 on the tank-cover 8 against spring-action 24. The armature-extension 25 to which spring 24 is attached carries a further extension 28 over which a projection 27 on the closing-linkage engages in the fully-closed position of the breaker, thus immobilizing the making-current release. The spaces 14 in the tank-cover 8 extending between the apertures of adjacent studs of one row, which spaces are to break the induced-flux path and so reduce heating, are utilized as the interpolar spaces of the field system constituted by the cover 8, the armatures being acted upon by the leakage flux thereacross. In a modification, Fig. 3 (not shown), the field system comprises a yoke running the length of the row with a pair of transverse projections extending therefrom about each stud, a common bar armature co-operating with the ends of the projections and being rectilinearly movable or pivoted. Separate independentlyacting armatures may however be provided for each pole and the field may be omitted in certain circumstances. The field and armature may be laminated, and, if desired, mounted within the tank. The Specification refers also to repulsion effects on the armatures by the conductor-flux or by eddy-currents, to a subsidiary trip catch, and to contacts actuated by the armature to make a trip circuit.
Patent GB-544371-A (GB)
Title: Improvements in or relating to drilling tools
IPC: B23B51/10
Filed: 1940-10-03
Abstract: 544,371. Drills and cutters. COOKE, A. H., and AVIATION DEVELOPMENTS, Ltd. Oct. 3, 1940, No. 14852. [Class 83 (iii)] A drill that performs also a countersinking operation has the drill 2 located in a bore of the countersink 1 the shank of which is split at 23 so that both drills are clamped simultaneously by the chuck jaws 3, the amount of projection of the drill being adjustable. A sleeve 5 loose on the shank of the tool 1 limits the depth of countersink through a ball race 6 acting against nuts 9, 10 adjustable on a screwed part of the shank The range of adjustment of the sleeve 5 is limited by shoulders, 24, 2<SP>5</SP> and a set screw 7. The sleeve is anchored by a handle, either hand held or contacting some fixed part of the machine.
Patent GB-657087-A (GB)
Title: Improvements in mould boxes for making cavity wall units for concrete houses
IPC: B28B7/18
Filed: 1949-02-28
Abstract: 657,087. Moulding concrete wall units. BLACKBOROW, H. J. Feb. 28, 1949, No. 14873/50. Divided out of 657,061, [Group X]. [Class 87 (ii)] A mould box for making cavity wall units complete with fitments, such as described in Specification 657,061, [Group X], has apertures in its walls which support collapsable core members C hinged at C<SP>1</SP>, adapted to be expanded by spreaders and serving to hold the fitments, such as window frame E, in position in the mould during the pouring of the concrete. The collapsable members C have metal cover-plates D at top and bottom.
Patent GB-551387-A (GB)
Title: Improvements connected with electrical braking of a.c. commutator motors
IPC: H02P3/24
Filed: 1941-11-20
Abstract: 551,387. Control of A.C. motors. SCHWARZ, B. Nov. 20, 1941, No. 14927. [Class 38 (iii)] Polyphase A.C. commutator motors are braked by injecting D.C., e.g. from a rectifier Re, into the stator S, and connecting the brushes B to a braking loop. As shown two pairs of brushes are connected through the secondary windings Se of a speed regulating controller to resistances R. Part of the braking current can be used to assist or replace the initial D.C. stator energization by closing switch 4. Modifications include the use of compensating coils on the stator and fication, a nipper post brake is used and in part of the D.C. excitation, and also the application of the invention to " Schrage " type motors.
Patent GB-378952-A (GB)
Title: Process for treating rubber latex or similar colloidal substances, and apparatus therefore
IPC: C08C1/00
Filed: 1931-05-20
Abstract: In treating colloidal suspensions of rubber such as latex in an autoclave at a temperature above that at which the liquid boils under atmospheric pressure, the space above the level of the liquid is maintained at a higher pressure than the vapour pressure of the liquid at the temperature of the liquid to prevent deposition of rubber on the surface of the autoclave.  This may be effected by providing the upper portion of a steam heated jacketed autoclave containing diluted rubber latex with a coil fed with superheated steam.  Alternatively steam, air or an inert gas such as carbon dioxide and nitrogen under pressure may be forced into the space above the liquid.  In a further modification the upper portion of the autoclave including the lid may be jacketed and supplied with superheated steam to maintain its temperature equal to or greater than that of the lower part of the autoclave.
Patent GB-346207-A (GB)
Title: Improvements in means for controlling the exhaust and inlet of internal-combustion engines
IPC: F01L1/28
Filed: 1930-05-15
Abstract: 346,207. Engine constructions and details. SERSTE, J. E., 83, Rue de Wautier, Laeken, Brussels. May 15, 1930, No. 15017. Convention date, Aug. 21, 1929. Addition to 346,206. [Classes 7 (ii) and 7 (vi).] Valves; valve gear.-In an engine as described in the parent Specification, in which a movable head 4 of the cylinder is actuated by the pressure of the burnt gases to open the exhaust ports 5, the admission valve is arranged to be closed by air or gas pressure from the adjacent cylinder, instead of by a spring as in the parent Specification. Fig. 1 shows a pair of engine cylinders 1, 1<1> fitted with movable heads or sleeves 4, 4<1> controlling exhaust at 5, 5<1>, the inlet at 7, 7<1> being controlled by valves 10, 10<1> seating on the ends of the sleeves 4, 4<1>. The hollow stems 15, 15<1> of the inlet valves are fitted with pistons 14, 14<1> operating in the movable heads, the lower sides of these pistons being permanently connected by inclined passages, one of which is shown at 40, 41<1>, to the upper end of the adjacent cylinder. Hence, when the movable head 4 of one cylinder is moved upwards to open the exhaust, the air or gas above the movable head is compressed into the space beneath the piston 14<1> of the inlet valve of the adjacent cylinder, thereby closing that valve. Four-stroke-cycle engines.-Each pair of cylinders have their pistons connected to a common crank, the cranks of succeeding pairs being displaced at 180‹.
Patent GB-810961-A (GB)
Title: Improvements relating to the mounting of traction motors of electrically-driven vehicles
Inventor: JOLLEY LESLIE CHARLES
IPC: B61C9/48
Filed: 1956-05-15
Abstract: 810,961. Mounting motors. BRITISH TIMKEN Ltd. March 11, 1957 [May 15, 1956], No. 15035/56. Class 79(3) The axle 2, Figs. 1 and 2, of an electrically driven vehicle is surrounded by a sleeve 1 having one or more integral flanges 3 or protruberances removably secured by screws 5 or the like to a motor carcase 4 having flange parts 8 engaging over the flanges 3. The screws 5 are thus relieved from shearing stress while keys 9 relieve them of tensile stress due to separating forces in the gears. The flanges 3 may, as shown, consist of two separate pairs of flanges or they may consist of continuous flanges extending nearly the full length of the sleeve which may be made as a one-piece tubular member instead of in two bolted-together parts, as shown. Fig. 4 shows a modified construction in which one flange 11<SP>1</SP> may be omitted, the carcase resting against the sleeve, or resilient or insulating pads may be interposed between the flanges 11, 13 and 11<SP>1</SP>, 13'. The bolt holders in the flanges 11, 11<SP>1</SP> may be elongated so that the carcase may move in the direction of the sleeve axis. Distance sleeves are provided between the flanges and the bolt heads and a resilient pad may be provided between an enlargement of the sleeve and one side of the flange to cushion the endwise movement.
Patent GB-291014-A (GB)
Title: Improvements relating to high frequency signal amplification systems
IPC: H03H7/01
Filed: 1928-05-23
Abstract: 291,014. British Thomson-Houston Co., Ltd., (Assignees of Carlson, W. L. V.). May 23, 1927, [Convention date]. Transformers.-A transformer 25 for use in a wireless set has a secondary winding 26 and two primary windings, one of which, 28, is coupled tightly, and the other, 27, loosely to the secondary winding. A switch 29 operates a contact 31 so that the output circuit is completed either through the loosely coupled primary winding or through both windings and a resistance 33.
Patent GB-1469403-A (GB)
Title: Openable windows
IPC: E05D15/48
Filed: 1973-03-29
Abstract: 1469403 Reversible window; window stays CODE DESIGNS Ltd 21 March 1974 [29 March 1973] 15141/73 Headings E1J and E2F An openable window comprises a window sash 4, an auxiliary frame 2a, 2b and a J- shaped stay 8. The sash 4 is pivoted at 5 on the lower half 2b of the auxiliary frame which is hinged 3 on the upper half 2a which is fixed to the main frame 1. The sash may be open for ventilation as Fig. 2 or reversed for cleaning as Fig. 4 when the sash and the lower half of the auxiliary frame are locked together and turn through 180‹ on hinge 3. The locking mechanism operated by the handle 9 has three positions and consists of an operating bar with projecting pegs 10a, 10b, 10c which engage with the slots 16 and 15 and the bolt 11 and so may lock the sash to the main frame, the sash to the auxiliary frame and the auxiliary to the main frame, respectively.
Patent GB-872522-A (GB)
Title: Lighting fixture
IPC: F21S8/00
Filed: 1960-04-29
Abstract: 872,522. Light fittings. SINGER MANUFACTURING CO. April 29, 1960 [May 1, 1959], No. 15213/60. Class 75(4). A lighting fixture comprises a substantially frusto-conical shade element 10 having its base open to receive separable reflector, lens, lamp and lamp socket elements, the smaller end being closed by a transverse wall 12 having an aperture located centrally thereof, a detachable switch 15 received in the aperture and a rotatable control knob 17 which forms a smooth continuation of the surface contour of the shade element and tapers to a blunt point. A nut 16 secures the threaded stud of the, switch to the transverse wall. The knob has indentations 18 to facilitate gripping. A hollow threaded stud 19 secured to the shade by a nut provides a support for the shade and a conduit for external leads 21, 22 which connect with leads 43, 44 to the lamp socket and leads 45, 46 to the switch. The lens element 32 has edge tongue portions 31 which by rotating the lens element engage under bridge portions 30:adjacent slots in the edge of the reflector. Bent up tabs 27 on the edge of the reflector and spring fingers 33 are screw connected to spaced stiffening ribs 23 on the shade element. The spring fingers engage in a groove on the inner surface of the lens. A spring member 37 on the socket holder has spring members 38, 39 with hook terminals snap engaging in apertures 41 and the rear periphery of the reflector.
Patent GB-581989-A (GB)
Title: Improvements in or relating to radio location systems
IPC: G01S7/36
Filed: 1943-09-17
Abstract: 581,989. Radiolocation. COCKCROFT, J. D., and OXFORD, A. J. H. Sept. 17, 1943, No. 15329. Drawings to Specification. [Class 40 (v)] Radiolocation apparatus normally responsive to pulses reflected from a distant object is arranged to respond also to a continuous-wave transmission which may be sent out for jamming purposes by a tracked aircraft. In one arrangement, particularly for use in the searchlight-control system described in Specification 581,980, the intermediate-frequency amplifier is provided with a change-over switch by means of which the early stages of the amplifier may be normally biassed to cut off, this bias being intermittently removed at pulse frequency by the reference pulses employed for selecting a particular target. The arrangement will also enable an aircraft to use its radiolocation apparatus for homing on a station emitting continuous waves.
Patent GB-291954-A (GB)
Title: Improvements in and relating to locking devices for electric incandescent lamps
IPC: H01R33/97
Filed: 1927-06-09
Abstract: 291,954. Hughes, R. O., and Francis Lamp Locks, Ltd. June 9, 1927. Holders. - In devices for preventing lamp bulbs from being removed from holders, of the kind comprising a telescopic ring which can be lengthened to abut between a fixed part of the holder and the lamp bulb but cannot be shortened again, means are provided to enable the pawl or spring that retains the parts in the extended position to be held magnetically in an inoperative position so that the bulb may be removed without breaking it. An aperture is made in the outer part 3 of the ring adjacent the free end of the spring 9 so that by applying a magnet to the aperture the spring may be held out of engagement with the ratchet teeth 8 formed on the inner part 5 of the ring. The aperture may be covered by a strip 14 of soft iron. Pawls 15 are provided in the inner part 5 of the ring to hold this still, by engaging with the bulb pins 16, while the outer part 3 is being rotated to extend the ring.
Patent GB-1107218-A (GB)
Title: Thermostatically controlled steam trap
IPC: G05D23/08
Filed: 1965-04-12
Abstract: 1,107,218. Temperature responsive actuating elements. KLEIN, SCHANZLIN & BECKER A. G. April 12, 1965 [April 11, 1964; April 24, 1964], No.15510/65. Addition to 1, 049, 951. Heading G1D. [Also in Divisions F2 and F4] In the thermostatically controlled steam trap of the parent Specification the pre-current spring plate 7 bears against a member 9 which causes the line of contact a between it and the spring plate to move on increase of temperature in a direction to increase the stiffness of the spring. As shown in Fig. 3 the member 9 is a rigid member with a convex upper surface and the contact line a moves towards the centre as the temperature increases. The member may be a bi-metallic disc which flattens when heated, Figs. 1 and 2 (not shown) or a shaped rigid member or a bi-metallic disc having a central cusp in its lower surface. The spring plate may be normally flat and disposed between two bimetallic discs adapted to curve in the same direction when heated. The spring plates may be replaced by bi-metallic elements.
Patent GB-448963-A (GB)
Title: Improvements in or relating to color and shade comparators
IPC: G01J3/51
Filed: 1935-05-28
Abstract: 448,963. Comparing colours. HAYS, C. E., 73, Sheffield Avenue, Pawtucket, Rhode Island, U.S.A. May 28, 1935, No. 15523. [Class 97 (i)] Apparatus for comparing colours of different specimens consists of a casing without internal partitions other than lightintercepting baffles containing an electric lamp, photo-electric cells and means for holding the samples tc be compared at equal distances from the lamp and in position to reflect light or transmit it to the photo-electric cells. Fig. 2 shows a plan of a casing with windows 15 against which samples of cloth &c. can be held by a hinged flap 17 at equal distances from the lamp 19 and photo-electric cells 22. The windows can be fitted with rotatable discs pierced with a graduated series of holes, or other known types of diaphragm. The cells 22 are carried on mounts pivoted on vertical axes. For comparing liquids or other transparent materials they, or cells containing them, are introduced through openings in the top of the casing so that the light passes through them from the lamp 19 to the cells 22, which are turned so as to face the lamp. The cells are arranged in opposition to each other and the difference in the currents generated read by a differential microammeter a potentiometer being provided for adjusting the zero. Each cell may be replaced by a number of cells in series ; the current may be amplified, but preferably it is not.