baber/WOPTO huggingface dataset:
Patent GB-1467201-A (GB)
Title: Apparatus comprising a seat mattress or like cushioning device
IPC: A61G7/057
Filed: 1975-03-24
Abstract: 1467201 Mattresses &c SOC NATIONALE DE POUDRES ET EXPLOSIFS SA and J LOEB 24 March 1975 [27 March 1974] 12260/75 Heading A4M A mattress, seat or like cushioning device comprises a pair of elastic skins 1, 2 united to define a sealed envelope filled with resilient and deformable bodies 3, e.g. spherical and of expanded polystyrene, and a pressure reduction assembly 4 for creating and maintaining a pressure reduction within the envelope whereby the bodies become imbricated and the device moulds to the shape of the user, the pressure reduction assembly comprising a gas generator 6 communicating with the injection side of an aspirator having a collector communicating with the interior of the envelope through a one-way valve 10. The assembly includes a striker 7 and an ejector 8 open to atmosphere through a silencer 9 the gas generator 6 including an explosive block with a front coated with an ignition composition that is ignited by the flame of a percussion cap placed in a carrier to be ignited when struck by a spring-loaded striker, the gas generated being discharged through the ejector 8 and silencer 9. An orifice may be opened by a manual control 14 to over-ride the non-return valve 10 to permit return of the envelope interior to atmospheric pressure. In one form, Fig. 1, the device comprises a mattress. In another form, Fig. 5, the device comprises a seat in which the sealed envelope is secured under tension to a border frame 27 by a strap 30 passed through eyelets. In another embodiment, (Fig. 10), (not shown), the skins are united through the intermediary of a rigid annular frame (41) to form a drum-like seat. In another embodiment, (Fig. 13), (not shown), a seat backrest is divided into upper and lower compartments each filled with resilient bodies. In a further embodiment, Fig. 12, a device which fits into a metal armchair carcase comprises six intercommunicating envelopes 44-49 defining back, seat and side pieces. In order to assist in breaking the imbrication of the bodies when the pressure in the envelope is restored a spring 54, Fig. 18 may be disposed beneath the envelope. In other arrangements the envelope may contain a further, air-filled envelope which assists in breaking the imbrication.
Patent GB-625422-A (GB)
Title: Improved regulating device for pneumatically controlled friction clutches
IPC: F16D48/02
Filed: 1946-04-23
Abstract: 625,422. Operating clutches. REGIE NATIONALE DES USINES RENAULT. April 23, 1946, No. 12270. Convention date, May 30 1939. [Class 80 (ii)] The variation in engaging pressure on the friction-facings of a group of common pneumatically-controlled clutches 1 at the point of engagement, which occurs due to change in length of the clutch-engaging springs caused by wear of the facings, is compensated by the provision of an individual manual adjustment at each clutch of the effort transmitted by the compressed-air cylinder 3 used for declutching, or (Fig. 11, not shown) for clutching. For this purpose the leverage between the piston 4 and clutch-fork 7 may be adjusted by moving the pivot-point of the piston-rod 5 along its lever 6, as by radial screw-adjustment or by providing a series of pivot holes along the lever, (Figs. 2 and 3, not shown), or the piston 4 may be opposed by an adjustable gravity or spring force acting over the whole or only a part of the piston stroke. In Fig. 5 a mass 22 or spring, connected adjustably to a lever 23, opposes the piston 4 only over the initial part of its stroke whereafter a circular part of a cam 24 on the shaft 13 of the clutchfork 7 rides under a roller on the lever 23 and the remaining stroke, which may be restricted by a stop, is unopposed. A stop 25, which may be adjustable, provides a working clearance e at the piston-crown. To provide a positional adjustment for the lever 6, it may be mounted freely on its shaft 13, Fig. 10, and be adjusted circumferentially by turning a worm 39 carried by the lever and engaging a toothed sector 38 secured to the shaft. The Specification as open to inspection under Sect. 91 describes additional constructions using pressure-regulation, or compressed-air cylinders in place of the mass 22. Thus in Fig. 4, (Cancelled), each clutch-cylinder 3 is fed from a common pressure-line 19 or separate reservoir 20, through adjustably-loaded pressure-regulating valves 17 operated by a common control-line 15. Where compressed-air is used to oppose the cylinder 3 in place of the mass 22, Fig. 5, the piston of an auxiliary cylinder acts constantly on the lever 23 at a point adjustable along its length or the pressure in the auxiliary cylinder may be adjustable by a regulating-valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-792719-A (GB)
Title: Improvements in or relating to apparatus for the excitation of synchronous machines
IPC: H02P9/38
Filed: 1956-04-23
Abstract: 792,719. Exciting synchronous machines. SIEMENS-SCHUCKERTWERKE AKT.-GES. April 23, 1956 [April 23, 1955], No. 12407/56. Class 35. In a compound-excited synchronous machine the current and voltage components are supplied from an exciting transformer 3, the voltage winding W3 of which is tapped for the injection of a current component additional to that produced by the current compounding winding W1, this additional component being derived from a current transformer 6 and injected in adjustable amount by means of tappings on either transformer and adjustable phase by means of cyclic interchange of phases. The voltage component is provided through a choke 4 resonating with condensers 5 for self-excitation.
Patent GB-592640-A (GB)
Title: Improvements relating to mechanical power relay or servo motor apparatus
IPC: G05G19/00
Filed: 1945-05-17
Abstract: 592,640. Mechanical servomotors. VENNING, R. B. H., and TAPP, E. T. J. May 17, 1945, No. 12431. [Class 80(ii)] [Also in Group XXXIV] A mechanical follow-up servomotor for brakes, steering and like controls, between a reciprocatory operating-rod 1 and a follower-rod 2, with provision for disconnecting the power source and obtaining direct operation when required, comprises an electric motor 17 which constantly drives in opposite directions, through chain and toothed gears 20, 21, two outer frictionclutch members 9, which are selectively clutched to an internally-threaded sleeve 6 by a follow-up lever 22, pivoted at 23 on a casing 16, which is journalled on the outer clutch-members 9 and carries the motor 17. Engagement of either clutch 9 drives the sleeve 6 which screws along a fixed post 4, so that the entire casing 16 and motor 17 are traversed as a unit along the post 4. The forked lower end of the follow-up lever 22 operates the clutches 9 through a pin 26 engaging crossed slots in clutch-levers 25. Pins 30, 43 on the followup lever 22 engage respectively a longitudinal slot 31 in the follower-rod 2 and a notch 44, in a curved link 42, pivoted at 37 on the operating-rod 1 and linked at 39 to a link 33, pivoted at 34 on the follower-rod 2 and having at one end a notch engaging the follow-up lever pin 30, and at the other a slot 36 engaging with axial clearance the pin 37 on the operating-rod 1. In operation, movement of the operating- rod 1 manually in either direction, within the axial clearance of the slot 36, operates the follower-rod 2 mechanically, through the curved link 42 and follow-up lever 22, with a leverage represented by the ratio of the respective distances of the pins 43, 30 from the fulcrum-pivot 23 of the follow-up lever 22. The latter, at the same time, engages one or other of the clutches 9, which causes a power traverse of the casing and motor unit 16, 17 along the screwed post 4 in the appropriate direction, producing a follow-up movement of the follower-rod 2 through the pin 30 and link 33, which persists as long as operating pressure is applied to the rod 1, the clutch 9 being disengaged by the follow-up lever 22 as soon as the pressure ceases. Direct manual operation, without lostmotion, is provided by raising a lever 48 which, through swing-links 47, raises the links 42, 33, disengaging them from the follow-up lever 22, thus disconnecting the power source, and causing a narrower extension of the slot 36 in the link 33 to engage the pin 37 without axial clearance, whereby the operating and follower-rods 1, 2 are rigidly connected together.
Patent GB-1438262-A (GB)
Title: Highimpact moulding composition formed from radial block co- polymers and high impact poly-vinyl-aromatic compound
IPC: C08L23/00
Filed: 1974-03-20
Abstract: 1438262 Radial block copolymer blends BELGOCHIM SA 14 Aug 1974 [20 March 1974] 12461/74 Heading C3P A moulding composition comprises (a) an impact resistant copolymer obtained by polymerizing a vinyl aromatic compound in the presence of a rubber, and (b) a radial block copolymer of a conjugated diene and a vinyl aromatic. An exemplified composition also includes minor amounts of zinc stearate and tbutylhydroxytoluene.
Patent GB-377633-A (GB)
Title: Improvements in clock controlled operating devices for electric switches
IPC: G04C21/22
Filed: 1932-04-30
Abstract: 377,633. Time switches. KONITZER, K., 19, Radiusstrasse, Leipsic, Germany. April 30, 1932, No. 12495. [Class 38 (v).] A device which may be readily attached to an ordinary alarm clock to cause a switch to be moved " on " or "off" at the time for which the alarm is set comprises brackets b supporting a vertically adjustable plate c carrying a pushtype switch e the operating rod y of which is actuated at the predetermined time by a spring- actuated arm x. The arm x is attached to a bar i which slides on the plate c under the action of a spring m but is normally prevented from moving downwards by a spring-biassed lever q which engages a nose t on the bar i. At the predetermined time the lever q is moved out of position by the rotation of a cam v which is connected by its shaft to a coupling member w which engages the alarm winding key z. The arm x is pivoted to the bar i and may be moved aside so that the switch e may be taken out and replaced the other way up.
Patent GB-1357203-A (GB)
Title: Filter candles
IPC: B01D29/11
Filed: 1971-05-01
Abstract: 1357203 Filter element JESSEL CO Ltd 18 April 1972 [1 May 1971] 12608/71 Heading B1D A filter element for the brewing industry, which comprises a perforate tube 2 wrapped with wire mesh 11 retained thereon by wires 10 welded to upper end fitting 4 and hooked on to lower end closure 6, is characterised by lower closure 6 having a hole 26 just below its upper wall 5 and aligned with a hole in tube 2, which prevents an air pocket forming in closure 6 and ensures proper cleaning thereof when the element is backflushed or sterilised. The wire mesh 11 may have a hole 27 protected by eyelet 28, aligned with hole 26. Several such elements are retained in holes in tube plate 14 in an enclosing vessel by bolts 17. All parts are stainless steel except for plastics gasket 23. The element receives a layer of filter aid in use, and imperforate areas of tube 2 and the triangular or rectangular section of wires 10 facilitate cake removal when the elements are backflushed with water or carbon dioxide, possibly after draining the vessel.
Patent GB-564677-A (GB)
Title: Improvements relating to self-locking nuts
IPC: F16B37/02
Filed: 1943-08-05
Abstract: 564,677. Self-locking nuts. ROBERTSON, E. R. Aug. 5, 1943, No. 12653. [Class 89 (i)] [Also in Group XXII] Relates to self-locking nuts of the kind comprising a body portion having a screw - threaded bore and a separately formed washer secured to the non-working end of the body and consists in providing the body 13 at its non-working end with a laterally projecting shoulder portion 15 that forms a seat 17 for the washer 20 which is secured against rotation as by turning in the flange at 18. The washer may have opposed notches 22 in its inner edge so that this may adapt itself to the thread by bending and twisting. In a modification, the part 15 ends in a flat out-turned flange and the washer is secured on this flange by a short tubular member flanged at one end below the part 16 and at the other over the washer. In a further form, the washer is tapped to fit the bolt and the thread is put out of lead after tapping by dishing the washer either upwards or downwards. The body may be of sheet metal or may be made from bar stock of the diameter of the maximum dimension of the base 11. The body of the nut is produced by turning down and drilling followed by forming and counterboring to provide the housing for the locking member. The base is trimmed to shape. Specifications 557,351 and 561,580 are referred to.
Patent GB-514174-A (GB)
Title: Improvements in or relating to magneto generators
IPC: H02K21/18
Filed: 1938-04-28
Abstract: 514,174. Magnetos. BENDIX AVIATION CORPORATION. April 28, 1938, No. 12714. Convention date, April 29, 1937. [Class 35] A stationary armature magneto has rotor poleshoes of unequal circumferential extent separated by equal gaps and the arcuate stator pole-pieces are equal in angular extent to the said gaps. In the form shown, 'the rotor poleshoes 4, 5 are separated by magnets 2, 3 approximately equal in span, to the arcuate faces of the stator pole-pieces 6, 7. By this construction one spark only per revolution is produced even at high speeds the other flux reversal being too slow to generate an adequate voltage. Preferably; the circuit breaker is maintained open until after the unused flux reversal has taken place.
Patent GB-672570-A (GB)
Title: Production of calcium cyanamide
IPC: C01C3/00
Filed: 1950-05-22
Abstract: <PICT:0672570/III/1> Calcium cyanamide is produced by heating lime or limestone with carbonaceous material and nitrogen under a pressure exceeding 10 atmospheres.  The carbonaceous material may be carbon, coke, coal, peat, wood, lignite, or hydrocarbons.  Hydrogen or hydrocarbon may be added to the nitrogen or generated in situ by thermal decomposition of coal and/or sawdust, when subsiduary reactions giving rise to calcium cyanamide involve methane, hydrocyanic acid, ammonia, and cyanogen.  Steel vessel 1 has a lower electrode assembly consisting of graphite rod 6, nickel clamp 5, water cooled copper pipe 4 and connection 20 mounted in insulating collars 7 closing stuffing box 8.  The vessel 1 is filled with a conducting core 12 of granular coke surrounded by an annular layer of granular charcoal, carbonized cotton and/or a layer of coal or coke or preferably, the mixture of coal and sawdust, which core and layer on heating to 1600 DEG C. produce gases at 600-1800 DEG C. which circulate through the surrounding layers. Finely divided lime, prepared by heating hydrated lime to 500-600 DEG C. alone or mixed with finely divided carbon, e.g. diameter less than 0.01 mm. and compressed into pellets with a binder, e.g. tar, to give a porous product on heating constitutes the next annular layer, and the final layer in contact with vessel 1 is lime for insulation.  The vessel is closed by lid 23, having a similar electrode assembly to that already described, and heated by electric current for 12-15 hours while nitrogen passes to the centre through tube 13 and refractory tube 14, and the effluent gas is withdrawn through pipes 16.  The vessel is allowed to stand for the same period under pressure.  The vessel may rotate about a horizontal axis for emptying and/or about a vertical or inclined axis for agitating the charge.  When reaction conditions give rise to hydrocyanic acid and/or cyanogen, the effluent gases are passed direct to a second chamber containing lime, at 700-850 DEG C. and lower pressure, to produce further calcium cyanamide.  Quartz window 17 is provided for optical pyrometer measurements of temperture.  The electrode intrusion may be adjusted by screw-on tube 4, and the heating element may be a rod or tube or a split rod when apterturing of the base of the vessel is unnecessary, or a carbon arc may be used.
Patent GB-617157-A (GB)
Title: Apparatus for determining the distance between the optical centres of two or more juxtaposed lenses or lens systems
IPC: G01M11/00
Filed: 1945-05-22
Abstract: 617,157. Optical apparatus. WOOSNAM, A. (Brandt Aktiebolag, J. P.). May 22, 1945, No. 12746. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 9, 1946.] [Class 97 (i)] An apparatus for determining the distance between the optical centres of two or more juxtaposed lenses or lens systems comprises a projector imaging a reticule on a ruled disc, and a movable holder for said lenses or lens systems, whereby the latter can be successively centred in the rays from the projector by displacement either of the holder or of the projector, such displacement being equal to the distance to be measured. As shown in Fig. 3, the apparatus comprises a stand 10 to which is connected a casing for a light source 1, a reticule 2 and a collimating lens 3; the reticule is axially adjustable so that an image thereof is focused on a ruled disc 5 carried, together with an eye-piece 15 and lens 4, in a part 10a of the stand 10. A table 20 carrying lenses in a spectacle frame G, Fig. 4, so that each lens overlies one of the apertures 44a or 44b therein, is movable in the direction of guide 22 which is movably carried by a stem 23 in a sleeve 24 in the stand 10. In use, the table is moved so that each lens is centred on the rays from the source 1, the correct position of the table being evident if an image of the reticule is focused on a cross on the disc 5. Each position of the table is read by noting the point of intersection of cross wires 43a carried by an arm 42 on the table with lines 41a on a platform 41, the difference between these readings giving the distance required. To accommodate spectacle frames of different sizes the table may be divided into two relatively slidable parts. The Specification as open to inspection under Sect. 91 also describes the platform 41 as being movable so that when the first lens is centred the platform may be moved to bring a zero line thereon in to coincidence with the part of intersection of the cross-wires 43a. Further movement of the table to centre the other lens can then be read directly, this reading giving the required distance. This subject-matter does not appear in the Specification as accepted.
Patent GB-541191-A (GB)
Title: Improvements in control circuit arrangements for mercury vapour rectifiers
IPC: H02M7/15
Filed: 1940-08-08
Abstract: 541,191. Rectifying alternating currents. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and WHITEHEAD, C. C. Aug. 8, 1940, No. 12753. [Class 38 (ii)] In a mercury arc rectifier regulated by phase shift of positive voltage impulses applied to control grids, the regulation is effected by variable saturation of an inductance in accordance with output voltage. The rectifier V, fed through a transformer T, has its grid energized through a transformer T 3  the primary circuit of which includes a valve V 2  which is periodically blocked so as to interrupt current in the primary circuit and thus apply impulses to the grid of the rectifier V 1  by a grid circuit which includes a rectifier Z, and transformer T 4 . The primary of the latter includes phase-displacing elements comprising a condenser C, and inductance L 4 . The latter is variably saturated under the control of a valve V 3 , the conductivity of which is varied in accordance with the output voltage of the rectifier V 1  by a connection between its cathode and the point of interconnection between a pair of resistances R 1 , R: across the load circuit terminals.
Patent GB-640752-A (GB)
Title: Improvements in or relating to roller blinds and their mountings
IPC: E04F10/06
Filed: 1948-05-10
Abstract: 640,752. Roller blinds. COOPE, J. T. L., and COOPE, J. W. May 10, 1948, No. 12784. [Class 20(iii)] The roller blind 6 comprising an awning for shop fronts &c. is mounted in a box 1 behind a fascia 3 with its lath 7 guided at each end or in its length by members 8 so that it must first pass downwardly through a slot 5 in the bottom of the box to a position where the blind is free for withdrawal. A spring-loaded blind arm 10 holds the lath firmly against the guides. The slot may be closed by a rail &c. carried by the lath or box. In a modification the blind box is located behind the building brickwork &c. and a cavity behind the fascia accommodates the lath.
Patent GB-941186-A (GB)
Title: Adjustable speed alternating current motor
IPC: H02K17/30
Filed: 1960-04-11
Abstract: 941,186. Motors with movable core parts. C. E. ELLIS. April 11, 1960 [April 9, 1959], No. 12861/60. Heading H2A. In a variable-speed induction motor having stator poles rotatable about the machine axis to vary the speed, each phase comprises two axially adjacent core parts, the adjacent poles of which are rotated apart from each other, and/or simultaneously the phases are relatively spaced, to raise the speed. In the form shown, each stator core 14 has two oppositely disposed slotted poles excited by concentric coils lying in the slots. The adjacent poles of each phase are of opposite polarity so that an axial flux is produced in the rotor, and mutual rotation of these poles produces a circumferential component which induces circulating currents in the rotor bars. The adjacent North and South poles of phase A are marked 27 AN and 27AS, their exciting windings being marked 28AN, 28AS respectively. For phase B, the poles are 27BN and 27BS, and so on. The rotor is divided into three separate magnetic cores, 20 and 21 being visible. Squirrelcage bars 24 extend through slots in all the rotors and are shorted by resistive end-rings 26. The longitudinal flux is accommodated by longitudinal magnetic laminations 25 lying in the bottoms of the conductor slots. The stators are supported by rollers 28 and driven by drive-rollers 30 which may be interlinked by gearing as shown, or by an arrangement of cams (Figs. 4 and 5, not shown). The poles of each phase are separated simultaneously with mutual rotation of the phases, as shown in Figs. 6, 7 and 8. Fig. 6 shows the zero condition in which no rotor current is induced; Fig. 7 shows the half-skew condition producing half maximum speed; and in Fig. 8 the poles are fully skewed to produce full speed. Instead of using concentric coils, the flux can be rendered sinusoidal by the use of sine-shaped poles as shown in Fig. 15. Alternatively, sinusoidally distributed windings may be used (Fig. 16, not shown). In a further modification (Fig. 17, not shown), the individual poles are not wound, but instead are excited by a fixed annular coil between each relatively movable ring of poles. The machine may be polyphase or split-phase, may have a spherical rotor, or may be linear.
Patent GB-279727-A (GB)
Title: Improvements in floor scrapers
IPC: A47L13/08
Filed: 1927-05-13
Abstract: 279,727. Abrahamsen, A. W. May 13, 1927. Scrapers; tool edges. -A floor &c. scraper has a cutter portion detachable from the blade so as to be renewable when worn. The blade 3, which may be fitted to a handle 2 or may be used without a handle, has its lower end bent up to provide a channel 5 and the cutter 4 has a corresponding bent back 6 inserted endwise into the channel 5. The cutting edge of the cutter 4 is formed on a part 7 bent at right angles. The slot 11 adjacent the channel 5 is curved in the direction of its length as at 12 and the cutter takes a curved shape when inserted in the channel; this prevents the corners of the cutter digging into the wood and causes the cutter to be held firmly in position. Both ends of the blade may be formed with a channel, the two cutters secured therein being used one for a rough finish and the other for a fine finish. Modifications are described wherein the channels formed on the blade are T-shaped, dovetail and round respectively to receive correspondingly formed ribs on the cutters.