baber/WOPTO huggingface dataset:
Patent GB-1237358-A (GB)
Title: Error checking circuit
IPC: G06F11/16
Filed: 1969-07-01
Abstract: 1,237,358. Error detection. INTERNATIONAL BUSINESS MACHINES CORP. 1 July, 1969 [25 July, 1968], No. 33048/69. Headings G4A and G4H. An error checking circuit for true-complement pairs comprises a plurality of such input pairs and means for producing such an output pair arranged so that the output pair indicates an error when one or more of the input pairs are erroneous, and when the means is malfunctioning and the input pairs represent a particular error-free plurality of signals, the means comprising two logic circuit trees each producing one of the pair of outputs, at least one of the trees including a true-complement type exclusive- OR circuit. An EXCL-OR (or EQUIVALENCE) block receives two inputs and provides one output, each being a bit in true and inverse form on a pair of lines. Various versions of the block are shown using ANDs, ORs, NORs, NANDs. If the block is functioning correctly, erroneous inputs (viz. equal signals on a pair, or on each pair) cause equal signals on the output pair to indicate error. If the block is malfunctioning, some error-free inputs will produce equal signals on the output pair, so the block is self-checking. A series of such blocks may be provided, e.g. for use in an adder or multiplier, the first block receiving two inputs to the series and each subsequent block receiving the output of the previous block and a further input to the series. A tree of such blocks may be provided for simultaneous inputs, the inputs going to a first level of blocks which feed a second level, &c. The logic function of such a tree can be achieved more economically by combining the various blocks, examples of this being given.
Patent GB-869883-A (GB)
Title: Improvements in or relating to electric light assemblies
IPC: B60Q1/26
Filed: 1957-10-24
Abstract: 869,883. Lamp-holders. DAVIDS, R.E., and LONDON BANKSIDE PRODUCTS Ltd. Oct. 30, 1958 [Oct. 24, 1957], No. 33235/57. Class 38 (1). A lamp-holder for a stop-tail lamp assembly comprises a sheet metal bayonet socket 3 having a laterally - extending, channel - shaped extension 3a, the sides of which are formed with outwardly projecting barbs 9 and the base of which has a bent-up contact 6. The socket 3 also has a pair of longitudinally extending posts 5, Fig. 9, on which is mounted an insulating member 11 carrying a pair of contacts 14 in the form of U-shaped plates, each having one longer arm bent to form a lamp-engaging blade contact 14a. The holder is mounted in the body 1 of the assembly by locating the barbs 9 beneath undercut ribs 2 on the body and pressing the holder down into the body so that the barbs slide beneath the ribs. The barbs then resist removal of the holder. In a modification, Figs. 10 and 12, for single contact lamps, the sheet metal socket 23 has depending legs 24 formed with barbed feet 24a which engage beneath undercut ribs 22 on the body 20. A central blade contact 30 has an integral, tubular portion 29 which is pushed over a mounting post 21 for the body 20 located between the ribs 22.
Patent GB-1358184-A (GB)
Title: Polyether graft polymers
IPC: C08F283/06
Filed: 1971-07-15
Abstract: 1358184 Graft polymers HERCULES Inc 15 July 1971 33377/71 Heading C3G A graft polymer is obtained from a polyether polymer which contains at least 60% by weight of monomer units which are halo-substituted at polyether chain carbon atoms and are halosubstituted hydrocarbon, halo-substituted hydrocarbon-oxy or halo-substituted hydrocarbon-oxyhydrocarbon radicals, the polyether polymer additionally having at least one hydrogen atom by replacing at least one hydrogen bonded to a chain carbon by a graft comprising monomer units derived from at least one free radically polymerizable ethylenically unsaturated monomer, and the graft polymer having a reduced specific viscosity of at least 0À2. The reaction of the polyether polymer with the grafting monomer may be carried out in the presence of a free radical catalyst, e.g. benzoyl peroxide. Numerous polyethers and grafting monomers are specified in the description. In the examples a copolymer of epichlorohydrin and ethylene oxide is grafted with (a) a mixture of acrylonitrile and styrene (1-8), (b) acrylonitrile (9-11), (c) styrene (12-14), (d) vinyl chloride (15), (e) maleic anhydride (17-19), (f) vinyl acetate (21 and 22), (g) methyl methaacrylate (23-26) and (h) vinylidene chloride (27); poly-(2-chloroethyl glycidyl ether) is grafted with vinyl chloride (16); and polyepiehlorohydrin is grafted with maleic anhydride (20).
Patent GB-1204898-A (GB)
Title: A method and apparatus for eluting the components of a mixed fluid sample
IPC: G01N30/84
Filed: 1967-11-27
Abstract: 1,204,898. Eluting chromatographically separated materials. SHIMAZU SEISAKUSHO Ltd. 27 Nov., 1967 [25 Nov., 1966; 1 Dec., 1966; 5 Dec., 1966; 30 May, 1967], No. 33397/ 68. Divided out of 1,204,897. Headings B1L and B1X. Materials which have been separated in chromatography column 2b are eluted in a stream of carrier gas by passing heater 40 from the outlet end towards the inlet end of the column. Heater 40 has a radial slot 41 to allow outlet tube 42 to pass along the length of the heater, and an insulating ring 43 which isolates a cooling ring 44, comprising a thermoelement or means cooled with coolant, from heater 40. The eluted material passes by tube 42 to stripping column 45 and thence to a detector.
Patent GB-382449-A (GB)
Title: Manufacture of arylamino-2-hydroxy-naphthalene-carboxylic acids
Filed: 1931-12-02
Abstract: An alkali metal salt of 2-hydroxynaphthalene containing in the 5-, 6- or 7-position an arylamino group is heated with carbon dioxide under pressure to obtain hydroxycarboxylic acid.  In examples: (1) 7-Phenylamino-2-hydroxynaphthalene is dissolved in aqueous caustic potash in an autoclave and the water is distilled under reduced pressure until the potassium salt is dry; carbon dioxide is then led into the autoclave whilst gradually increasing the temperature and pressure; the cooled melt is dissolved in water, filtered and the carboxylic acid precipitated by dilute hydrochloric acid; the carboxylic acid may be further purified by dissolving it in sodium acetate solution and precipitating it therefrom by means of an acid; the sodium salt of 7-phenylamino-2-hydroxynaphthalene may also be used.  (2) 7-o-Tolylamino-2-hydroxynaphthalene or (3) 7-p-chlorphenylamino-2-hydroxynaphthalene is treated as in example (1) to obtain the corresponding carboxylic acids.  A table is given describing the properties of 7-p-methoxyphenylamino-2-naphthalene carboxylic acid, 6- and 7-p-tolylamino-2-hydroxynaphthalene carboxylic acid, 7-a -naphthylamino - 2 - hydroxynaphthalene carboxylic acid, p  6-phenylamino-2-hydroxynaphthalene carboxylic acid, 5-phenylamino-2-hydroxynaphthalene carboxylic acid.  5- and 6-Arylamino-2-hydroxynaphthalenes are prepared by subjecting the corresponding arylaminonaphthalene sulphonic acids to caustic alkali fusion.  Specification 341,120 is referred to.
Patent GB-1048450-A (GB)
Title: Extrusion die deckle
IPC: B29C48/08
Filed: 1964-08-17
Abstract: 1,048,450. Extrusion dies. FRANK W. EGAN & CO. Aug. 17, 1964 [May 4, 1964], No. 33464/64. Headings B5A and B5B. A film or sheet-forming die having an elongated slot formed between two jaws, at least one of which is adjustable towards and away from the other to vary the width of the slot, is provided with a deckle-bar having a sealing face bridging the slot and in slidable sealing contact with bearing surfaces provided on each jaw and each extending outwardly from and along one side edge of the slot, and means mounting the deckle-bar on the die for movement of the bar longitudinally of the slot. A deckle-bar carrier holds the deckle-bar in sealing contact with the bearing surfaces on the jaws, while providing for movement of at least one jaw relative to the carrier to adjust the width of the slot. The die may be used for film casting, laminating or extrusion coating using, e.g. polyethylene. In one embodiment (Figs. 1, 2 and 3, not shown), a die for extrusion laminating consists of a body 2 containing manifold hole 3 communicating by passage 5 with slot orifice 10 formed between jaws 6 and 7. Jaw 6 is fixed in position by bolts 8<SP>1</SP>, while jaw 7 is movable towards or away from jaw 6 by means of adjusting screws 8, a clearance being provided between jaw 7 and retaining bolt 9. Electric heaters 11 are fixed to the die body by clamps 12. The die body also carries heaters 13. End caps 14 seal the ends of the slot orifice 10. Each deckling means 15, provided at each end of the die, consists of a deckle-bar 24 held against flat surfaces 10a of jaws 6 and 7 by set screws 25 provided in a U-shaped deckle-bar carrier 16. The carrier is supported by hanger rail portions 16a bearing on track portions 6a, 7a of jaws 6 and 7. The deckle-bar, and the carrier, are moved slidably along the die jaws by turning pinion wheel 18, which engages in gear teeth 17 on the carrier 16. The deckle-bar 24 is faced with a heatresistant layer 23 of graphite-impregnated asbestos or fluorocarbon plastic, which allows the bar to slide along the jaws while providing sealing contact. The width of the extruded film may thus be varied without alteration of the die jaw setting. The entire deckle-mechanism may be removed by rotating pinion 18 until it is disengaged from teeth 17.
Patent GB-803191-A (GB)
Title: Improvements in or relating to coated regenerated cellulose film
IPC: C08J7/052
Filed: 1955-11-22
Abstract: 803,191. Coated cellulose films. DU PONT DE NEMOURS & CO., E.I. Nov. 22, 1955 [Nov. 22, 1954], No. 33490/55. Class 140. A packaging film comprises a base film of regenerated cellulose having a subcoat of a copolymer obtained from up to 70 per cent vinylidene chloride and 30-100 per cent of an alkyl acrylate in which the alkyl group contains at least 2 carbon atoms, and a top coat of a copolymer obtained from 80-97 per cent vinylidene chloride and 3-20 per cent of at least one polymerizable mono-olefinic monomer. The Specification states that the most useful monomers are those of general formula CH 2  = C(R)X, where R may be hydrogen, halogen or a saturated aliphatic aliphatic radical and X may be chosen from the following groups: halogen, cyanide, carboxyl, phenyl, -CO(OR<SP>1</SP>), -CO(R<SP>1</SP>), -CHO, -OC 6 H 5 , -CONH 2 , -CONHR<SP>1</SP> and -CONR<SP>1</SP> 2 , where R<SP>1</SP> is alkyl. Many such compounds are listed in the Specification but special emphasis is placed on the use of an alkyl acrylate, e.g. methyl acrylate, or acrylonitrile The base film of regenerated cellulose may be pretreated before coating by either softening with ethylene glycol or impregnating with a urea-guanidine-formaldehyde resin which may alternatively be incorporated in material from which the film is originally cast, or both. The coating compositions, which may be applied by conventional methods from either aqueous dispersions or solutions of the polymers in organic solvents, preferably contain from 0.5 to 3 per cent by weight based on the total weight of the two components of the polymer of an unsaturated aliphatic acid, e.g. acrylic, methacrylic or itaconic acids. Other components may include dyes, pigments, delustrants and plasticizers. Specifications 654,342 and 684,105 are referred to.
Patent GB-822011-A (GB)
Title: Improvements relating to access manholes provided in cylindrical tanks or the like
Inventor: EATWELL HENRY THOMAS
IPC: F16J13/02
Filed: 1955-11-23
Abstract: 822,011. Manhole covers. HARVEY & CO. (LONDON) Ltd., G. A. Nov. 23, 1956 [Nov. 23, 1955], No. 33600/55. Class 123(1) In a manhole unit that can be readily fitted to cylindrical tanks or the like of different diameters, a cylindrical neck portion 1 is secured in a hole cut in the tank 12a or 12b and has formed on its outer end an inwardly directed flange 2 to which is secured, by means of bolts 7, a sealing ring 11 and a dished cover 4. The bolts 7 have square heads 8 which, when the bolts are inserted, engage the inner wall of the neck portion 1 and circlips 8x are provided to prevent the bolts from falling out.
Patent GB-835481-A (GB)
Title: Flower-gatherer and pruning tool
IPC: A01G3/025
Filed: 1957-10-29
Abstract: 835,481. Flower-gatherers; pruners. WRIGHT & SON Ltd., A., and WRIGHT, A. June 9, 1958 [Oct. 29, 1957], No. 33635/57. Class 30 [Also in Group, XXIII] A flower-gatherer and pruner comprises a stem 7, secured to a hand-grip 21 and to a fixed blade A, and a rod 11, 11a running along the stem and connected to an operating lever 29 and carrying a transverse pin 10 guided in a slot 8 in the fixed blade and passing through an oblique and preferably curved slot 9 in a movable blade B pivoted on the blade A, the blades having holding surfaces extending along and behind their cutting edges to grip a cut stem. The parts 11, 11a of the rod are connected by a threaded collar 15, a volute spring 18 bearing on a guide bush 16 and on the collar to automatically open the blades. The blade A has a serrated face 34 which seats against a face 38 of a block 37 secured to the blade B to grip a stem severed by the cutting edges. The head 32 of a pivoted retaining catch 30 engages a cavity in the handle to hold the blades closed.
Patent GB-502717-A (GB)
Title: Improvements in and relating to safety valves for steam boilers and the like
IPC: F16K17/04
Filed: 1937-12-06
Abstract: 502,717. Safety valves. AULD & SONS, Ltd., D., GRAHAM, J., and GRAHAM, D. A. Dec. 6,1937, No. 33678. [Class 135] - In a safety valve for steam boilers and the like of the kind in which a piston p loosely mounted on the main valve stem h and working in a steam chamber o gives an increased lift to the main valve g when steam is admitted to its underside by the opening, at a predetermined pressure, of an auxiliary valve x, the piston and the steam chamber are mounted on the upper end of the valve spring casing n remote from the valve casing a. A passage v for condensate is provided in the base of the steam chamber o, and a further passage w is formed in a cup-shaped stem guide i held between the spring casing and the valve casing. The spring casing has an opening n<1> to the atmosphere. The auxiliary valve x is preferably integral with a piston y and may be set to open at the same pressure as the main valve or at a higher pressure. Its outlet t communicates with the base. of the steam chamber through which a spring-regulating sleeve m passes.
Patent GB-462405-A (GB)
Title: A means for locking double doors particularly doors of wardrobes, cupboards and the like
IPC: E05C7/06
Filed: 1935-12-05
Abstract: 462,405. Door fastenings. COMPACTOM, Ltd., PINTO, E. H., BURRUS, E. J., and HILL, H. H. Dec. 5, 1935, No. 33714. [Class 44] A fastening for double doors of wardrobes &c. comprises a lock on one door, the head of the bolt, when shot, moving a pivoted member on the other door into engagement with a co-operating member mounted on a partition or other fixed part of the structure. Fig. 3 shows a bar mounted to oscillate in a bearing portion 7 of an attachment plate 6 secured to the door 2. The door 1 carries a lock 4 the bolt-head 5 of which, when shot, engages the end 9 of the bar and rocks it to raise the end 10 into engagement with a pin 11 on the fixture 3. Fig. 4 shows a plate 12 pivoted at 13 on door 2 and rocked by the shooting of bolt 5 on door 1 into engagement with a recessed catch plate 16 on fixture 3. A further modification is described comprising a lever one arm of which is engaged by the bolt to move the other hook-shaped arm into engagement with a fixed catch-piece.
Patent GB-1374756-A (GB)
Title: Fluid pressure servo system
IPC: B64C27/32
Filed: 1971-10-13
Abstract: 1374756 Variable pitch propellers HAWKER SIDDELEY DYNAMICS Ltd 13 Oct 1971 [13 July 1970] 33942/70 Heading B7V [Also in Division G3] In a propeller pitch control system, an input signal applied to potentiometer 1 varies the control pressure applied at G to pilot spool 10 whereby the latter shifts to establish a pressure differential via E, F across pitch-control piston 4 which then shifts in the same direction as potentiometer 1 until the pilot spool is returned to its null position by potentiometer 2 which accompanies the piston and adjusts the feedback pressure applied at H to the spool. Each potentiometer may consist of a plunger having helical or axial grooves intermediate supply port B, C and drain ports K, L.
Patent GB-1127475-A (GB)
Title: Improvements in or relating to control systems
IPC: G07C9/00
Filed: 1966-07-28
Abstract: 1,127,475. Card readers. INDUSTRIAL INSTRUMENTATIONS Inc. 28 July, 1966 [23 Aug., 1965], No. 33946/66. Heading G4M. Indicia on a card in the form of metallic inserts are sensed by an array of transformers having primary windings 40 to which a pulse is supplied from transistor 80 when contacts 56 close on insertion of the card. Pulses are induced in those secondary windings 42 not associated with metallic inserts, to turn on corresponding controlled rectifiers 90. If a particular combination of indica is sensed, decoding diodes connected to terminals 108, 110 operate relay 118 to actuate associated apparatus, e.g. vending or accounting apparatus or a lock. When the card is withdrawn, transistor 96 ceases to conduct and removes the operating supply from rectifiers 90. In another embodiment, Fig. 8 (not shown) each card has, in addition to the coded indicia, a magnetic insert which is detected by a triggering transformer to energize the primary windings 40. Detection of the card also sets a " card in " trigger, and removal of the card sets a " card out " trigger. Several card readers are connected to a scanning arrangement comprising a shift register which is continuously stepped by an oscillator to sample the states of the various " card in " and " card out " triggers in turn, stepping of the shift register being momentarily interrupted when a set " card in " trigger is sampled, so as to allow read-out of the corresponding controlled rectifier storage devices 90. When a card is withdrawn, the shift register is again stopped when the corresponding "card out " trigger is sampled, and a further shift register is stepped to serialize the output of a logic circuit connected to leads which are common to all the rectifiers 90. The serial data may be used to operate a printer. At the end of the serializing operation, the operative card reader is restored to a reset condition, and scanning of the readers by the first shift register is resumed.
Patent GB-871038-A (GB)
Title: Improvements in or relating to aviation jet propulsion engines
Inventor: MOY TSOY K
IPC: F02K1/60
Filed: 1959-10-07
Abstract: 871,038. Jet propelled aircraft. WESTING- HOUSE ELECTRIC CORPORATION. Oct. 7, 1959, No. 33956/59. Class 4. [Also in Group XXVI] An aviation jet propulsion engine comprises an inner tubular casing 13 provided with an exhaust nozzle 11, of variable area, an outer shell structure 21 concentrically encompassing the inner casing 13 and an ejector shell structure 24 including shell segments 25 being disposed concentrically within the outer casing and having means for rotation of the segments about an axis normal to the central axis of the exhaust nozzle. First actuator means move the shell segments 25 parallel to the nozzle axis to provide a continuation of the outer shell structure with means provided for preventing rotation of the shell segments 25 during the axial movement of the shell structure and second actuator means 33 rotate the shell segments about pivots 27 into the exhaust gas path to reverse the direction of thrust, the second actuator means 33 being effective when the means for preventing rotation of the shell segments is ineffective. Under normal running conditions the shell segments 25 are withdrawn into the outer casing 23, Fig. 1, and the exhaust nozzle area reduced by leaves 36 operated by an actuator 39. During afterburning the shell structure 24 is extended rearwardly until the lipped edge 42 is only slightly forward of an annular seal 35. At the same time pressurized air is fed to the annular passageway 22 and ejected into the ambient air as an envelope surrounding the enlarged exhaust nozzle aperture, Fig. 2. For reverse thrust, the exhaust nozzle is reduced in area and the ejector shell extended rearwardly until clear of the outer casing 23, whereupon actuator arms 26 are arrested and links 31 driven by arms 32 of actuators 33 pivot the shell segments 25 about hinge pins 27 until the segments abut end to end. The lipped edge 42 gives the exhaust gas a forward component of velocity.
Patent GB-1121833-A (GB)
Title: Method of and apparatus for obtaining time-dependent electric signals, and method of and apparatus for linearisation of transducer response characteristics
IPC: H03M1/00
Filed: 1965-08-09
Abstract: 1,121,833. Selective signalling. V. M. TROUSOV, A. P. FEDOROVA and E. M. CHERNETSKY. 9 Aug., 1965, No. 33973/65. Heading G4H. A pulse train whose frequency varies cyclically, non-linearly with time, is produced by frequency division of a clock-pulse train by a factor which varies cyclically and non-linearly with time. By counting such pulses in a counter which is reset to zero at the end of each cycle and converting the count to an amplitude significant signal, a signal can be produced whose amplitude varies cyclically and non- linearly with time. A frequency significant output signal from a non-linear transducer can be digitized by counting the pulses of the above pulse train for a period commencing n pulses of the transducer signal after the beginning of a cycle and continuing until the end of the cycle, where n is suitably chosen in relation to the length of a complete cycle. The varying division of the clock pulse train is effected by successively dividing the clock-pulses by two and by mixing the resulting sub clock-pulse trains in appropriate combinations under the control of a counter counting the main clock-pulses.
Patent GB-340258-A (GB)
Abstract: 340,258. Snap-action switches for internal-combustion engines. NORTH & SONS, Ltd., Whippendell Road, and ALLEN, A. MASSEY-, 142, Queens Avenue, both in Watford, Hertfordshire. Sept. 23, 1929, No. 28780. [Class 38 (v).] A single set of sparking-plugs is connected either to a magneto or to a battery and induction coil in such manner that the low-tension switching operation succeeds the high-tension change-over. The low-tension switch comprises a pair of roller contacts 15 supported in a fork 11 on the upper side of the disc 8. The rollers engage recesses 16 in the head of the casing 1, the first, third and fourth recesses presenting insulating surfaces only ; while the surfaces in the other three recesses are metallic, affording electrical connections to the magneto and coil circuits through terminals 23. The casing 1 carries two concentric sets of terminals 25, an inner ring of six connected to the sparking-plug terminals, and an outer ring of twelve connected alternately to the distributers associated with the magneto and coil systems. To the inner terminals 25 are pivoted spring-controlled blades 31 which pass radially through sharp-edged slots 36 in a ring integral with the disc 8, and at their ends make contact with studs 32 associated with the outer terminals 25. The magneto circuit is operative when the disc 8 is set with the rollers 15 to the left, Fig. 3. With the rollers in the second and fifth positions the magneto is short-circuited and the coil circuit open, while the slots 36 hold the arms 31 in mid-position between the studs 32. Before however the rollers 15 engage the third and sixth recesses, the latter of which closes the battery-coil circuit, the springs 31 cause the corresponding hightension circuits to be closed. Cases.-The casing 1 may be enclosed in a metallic screen for obviating disturbance to wireless installations, the cable-ends being united to the screen by a flanged collar and clamping nut.