baber/WOPTO huggingface dataset:
Patent GB-946340-A (GB)
Title: Improvements in or relating to nuclear magnetic resonance magnets
Inventor: SYKES ARTHUR
IPC: G01R33/383
Filed: 1961-05-25
Abstract: 946,340. Permanent magnets. SWIFT LEVICK & SONS Ltd. May 18, 1962 [May 25, 1961], No. 18851/61. Heading H1P. [Also in Division F2] The parallelism of the pole tips 5' 7 of a nuclear magnetic resonance magnet energized by permanent magnets in housings 1, 2 is adjusted by three equispaced devices 11 which support the tiltable pole tip 5 by means of plungers 20 which are finely movable parallel with the magnet axis by a transverse wedge 15 slidable in a housing bore 14 by a fine pitch screw 25, 27. Key-pins 17, 22 prevent the cylindrical wedge and plunger rotating, and each plunger end 23 and the surface 34 of pole tip mounting 6 may be part-spherical to minimize deformation.
Patent GB-788390-A (GB)
Title: Derivatives of 10-benzoyl-3, 7-bis (dimethylamino) phenothiazine
Filed: 1956-06-19
Abstract: The invention comprises 10-(3-nitrobenzoyl)-3:7 - bis - (dimethylamino) phenthiazine and 10 - (4 - nitrobenzoyl) - 3:7 - bis - (dimethylamino) phenthiazine, which are prepared by reacting the zinc chloride double salt of leucomethylene blue of the formula: <PICT:0788390/IV (b)/1> with 3-nitro- or 4-nitrobenzoyl chloride respectively in pyridine, heating the mixture and pouring the reaction mixture into water to form a precipitate, filtering out the precipitate, treatin the precipitate with alkaline solution, filtering the precipitate and extracting with hot benzene, treating the benzene solution with fuller's earth and filtering the mixture, and precipitating the resulting product from the filtrate with petroleum ether.  The above compounds develop an intense blue-green colour in contact with attapulgite or halloysite.
Patent GB-1366082-A (GB)
Title: Oxidation process
IPC: C07C51/31
Filed: 1971-06-04
Abstract: 1366082 Reaction with cooling tubes IMPERIAL CHEMICAL INDUSTRIES Ltd 26 May 1972 [4 June 1971] 19009/71 Heading B1X [Also in Division C2] An apparatus, for oxidising a liquid alcohol and/or ketone with nitric acid to a carboxylic acid consists of a vessel 1 with inlet tubes 2 and 3 for reactants, and cooling tubes 4 so arranged to be in horizontal banks, and in vertically spaced formation from each other. The interspacing of the tubes is arranged so that the turbulence induced by the evolution of gas during the reaction inhibits the formation of bubbles on the cooling surfaces, thus increasing the efficiency of the cooling system.
Patent GB-276128-A (GB)
Title: An improved ceiling rose for supporting hanging electrical equipment
IPC: F21V21/02
Filed: 1926-07-31
Abstract: 276,128. Tucker & Co., Ltd., J. H., and Gaffney, J. E. July 31, 1926. Ceiling roses. - The terminals c are arranged within a housing formed by flanges a<3> that extend from one end of the main flanges a<2> and curve round towards the other end, leaving a narrow gap through which the lead passes from the central opening a<1> to the terminal. The terminals are held in place by the clamping screws c<1> passing through the flange a<3>. Recesses a' receive lugs on the metal conduit box to which the rose is secured by screws.
Patent GB-874450-A (GB)
Title: Remote control receiver
IPC: H03J1/20
Filed: 1960-05-30
Abstract: 874,450. Electric selective signalling systems; controlling and actuating by ultrasonic waves. RADIO CORPORATION OF AMERICA. May 30, 1960 [June 15, 1959], No. 19113/60. Classes 40 (1) and 118. [Also in Group XL (c)] The invention relates to a radio or television receiver with remote control by means of a radio or-as shown-supersonic link. Supersonic control pulses are generated by a transistor oscillator 12, are picked up in the receiver by a microphone 21 and amplified by an amplifier comprising input stage 24, R.C. coupled variable-gain  stages 26, 28, 30 and output stage 32. The output stage 32 feeds a rectifier 42 via circuit 36. 38 tuned to the frequency of the control signal. The rectifier 42 is provided with load resistors 54, 52 and the positive D.C. voltage produced across  resistor 54 by a control signal pulse is applied to a biased-back  valve 44, to produce conduction whereby relay contacts 46 are momentarily closed. Closure of contacts 46 energizes tuning motor 70 provided with a sliding armature, movement of which closes the holding contacts 73, 74; upon energization, the motor drives the tuning mechanism of the receiver until a fresh station is reached whereupon the programme switch 75 opens and de-energizes the motor. The programme switch 75 is coupled to an "off" switch 76 whereby the receiver can, in one position of switch 75, be switched off. The negative D.C. voltage across rectifier load resistor 52 is used to provide automatic gain control on the variable-gain stages 26, 28, 30. In such an arrangement false operation may occur with noise, which is wide-band and may be of insufficient energy to operate the automatic gain control. According to the invention, this is prevented by deriving a second gain control voltage from the wide-band signal, and applying it to reduce the gain of the stages 26, 28, 30. A wide-band signal, i.e. noise, of sufficient amplitude causes grid current in the valve 32, and the resulting voltage drop across grid resistor 66 is applied over resistor 68 to the automatic gain control line. The gain of stages 26, 28, 30 is thereby reduced, reducing the noise signal at the rectifier 42 and in addition a delay bias is applied to this rectifier, reducing its rectifying ability.
Patent GB-611617-A (GB)
Title: Silencing means for machines having a plurality of air operated motors
IPC: F01B17/00
Filed: 1945-07-26
Abstract: 611,617. Silencing gaseous currents. BOHN ALUMINIUM & BRASS CORPORATION. July 26, 1945, No. 19224. Convention date, Jan. 31. [Class 7 (ii)] The escaping air from several pneumatic motors I, J, K, L is silenced by directing the air through a central casing A and a muffler W. The application to a broaching machine is described in which the motors and the casing are mounted on the frame thereof. The air is supplied through a conduit M, to which a lubricator V is attached, and it is directed by a master valve F, pilot valves G, G<1> and valves C, D, E to the motors, all of which are thus lubricated. It returns from the cylinders of the motors to the casing and surplus lubricant is collected in a tray placed under the muffler W.
Patent GB-459506-A (GB)
Title: Improvements in or relating to television or like systems
IPC: H04N5/06
Filed: 1935-07-05
Abstract: 459,506. Converting. WILSON, J. C., 24, Whitworth Park Mansions, Moss Lane East, Manchester, and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. July 5, 1935, No. 19293. [Class 38 (ii)] In an arrangement for generating square topped impulses, impulses of any suitable wave form are applied at 3 to a rectifier through a biassing means 2 and the primary of a transformer 4 coupled in the grid circuit of a negatively biassed vacuum triode 1. The arrangement is such that the sudden flow of current in the rectifier circuit in each cycle of the input current produces a positive pulse in the grid circuit of the triode to render it conductive. The anode current of the valve 1 is limited by a grid resistance 6. When the rectifier current reaches its full value the anode current of the valve 1 falls abruptly to a low value. The rectifier may be biassed by a battery or by a resistance 2 in the anode circuit of the valve 1, and it is included in the envelope of the valve 1 and utilizes the same cathode. The resistance 2 may be decoupled by a shunt condenser, and the output is taken across the thermionic valve 1 which is connected to a supply battery through a resistance 8. Specification 455,048, [Group XL], is referred to.
Patent GB-596826-A (GB)
Title: Surgical instrument
IPC: A61B17/50
Filed: 1945-07-28
Abstract: 596,826. Electromagnets. UTLEY, C. A. and MANLEY, J. P. [trading as CALIFORNIA MAGNET CO.]. July 28, 1945, No. 19358. Convention date, July 14, 1944. [Class 35] [Also in Group VI] A surgical metal extractor comprising a hollow elongated casing 10 closed at both ends and containing a soft magnetically permeable metal core 20 surrounded by a wire coil 22, is characterised in that the core extends through the closure at one end and has a socket 20<1> formed therein into which the grooved inner end 31 of a magnetically permeable blade 29 is fitted and retained in freely rotatable position by a spring pressed ball 33 mounted in the casing which also carries switch means for the coil circuit. The switch means may comprise a leaf spring 23 connected to one lead of the cable 13, operated by a push button 25 to contact a metal band 26 surrounding the coil end connected to one end of it, the other coil end being connected to the other electric lead. The core may be of soft iron, and the casing, the end closures, and the core support '21 of insulating material. The blades may be plated, e.g. with chromium, may have a variety of shapes and are easily fitted and axially adjusted. The current may be 60 cycles A.C., which vibrates the foreign matter, or D.C. The instrument while light and handy, may have 8 ozs. lifting power.
Patent GB-815728-A (GB)
Title: Improvements in or relating to variable pitch marine screw propellers
Inventor: HARVEY GEORGE COLLINS
IPC: B63H3/04
Filed: 1954-07-02
Abstract: 815,728. Marine variable pitch propellers. SLACK & PARR (MARINE) Ltd. July 4,1955 [July 2, 1954], No. 19388/54. Addition to 712,614. Class 114. The control gear for a marine variable pitch propeller, as set forth in the parent Specification and comprising a control member 20 coaxial with the propeller shaft and movable axially therein to vary the pitch, a thrust bearing 26 on the control member to take blade twisting loads, and an element 12 carrying the thrust bearing and located axially on the propeller shaft by a second thrust bearing 17, the element 12 being fixed to the ship's hull so that a separate thrust block is not required, is modified so that the thrust bearing 26, which carries the blade twisting loads only and is secured to the control member 20, is carried by a pivoted link 38 to which axial movement is imparted by a control means such as nut and screw mechanism 42 off set from the propeller shaft and, as shown, parallel to it : parallel links 38 are provided which straddle the housing 31 of the thrust bearing 26, their ends being connected by pivoted links 36, 45 to the lower part of the element 12 and to a nut 43 of the screw mechanism 42 respectively, the nut bridging the two ends of the links. Midway, the links are pivoted on bosses 39 on the housing 31 which transmits their movement to the control member 20 through the thrust bearing 26, a sleeve 22 on the propeller shaft 10 and a pin 16 passing through the sleeve and control member 20. The propeller shaft is slotted to receive the pin and extends through the opposite ends of the element 12. In the modification shown in Fig. 3, the element 12a houses a reduction gear 55 having one gear 58 mounted on or integral with a forward extension 57 of the propeller shaft and located axially between the parts of a divided thrust bearing 60 mounted in a wall 19a of the element and a transverse partition 56 therein. The control member 61 extends beyond the extension 57 to carry the thrust bearing 65, 66 and its housing 69 which is disposed between the ends of link members 71 which support it and are themselves carried by links 76 pivoted on a transverse shaft 75 ; the upper ends of the links 71 are connected by pivoted links 74 to the screw mechanism 73. The drive shaft 79 for the redution gear passes between the links 71. Reference has been directed by the Comptroller to Specification 733,232 [Group XXXIII].
Patent GB-134382-A (GB)
Title: Mitre Cramp.
Inventor: ROBINSON MAURICE
IPC: A47G1/16
Filed: 1918-11-26
Abstract: 134,382. Robinson, M. Nov. 26, 1918. Cramps.-A cramp for picture frames &c. of the flexible cord or chain type, has a screw-operated tightening device with means for guiding the cord or chain parallel with the adjacent sides of the frame &c. As shown in Fig. 1, the frame is cramped up between the three corner pieces a and a corner piece b having an extended base b<1> on which is mounted a screw c<1> fixed to a sliding plate c<2> and a nut c engaging the screw and pivoted in the up-turned end of the base b<1>. A cord or chain d passes round the pieces a and round a curved guiding-lug b<2> projecting up from the base b<1>, and its ends are secured to the plate c<2> by aid of notches c<3>, c<4> and a pin c<5>. In the modification shown in Fig. 5, the sliding plate c<2> is provided with lugs c<6> to adapt it for engaging the links of a chain, and with pins c<7> for use when a cord is to be used. Flanges a' on the corner pieces a are perforated so that they may be attached to a bench or base, and the base b<1> is similarly perforated. Fig. 4 shows the tightening clamp and cord d in use without the corrier pieces a, for clamping the parts e<1> of a column. Curved pieces f grooved for the cord d are placed round the parts e<1>, and a. block of wood g is placed in the corner piece b in which it may be fixed by screws through holes b<5>.
Patent GB-250084-A (GB)
Title: Improvements in warp-tensioning devices for looms
IPC: D03D49/06
Filed: 1925-08-01
Abstract: 250,084. Volech, F. Aug. 1, 1925. Shedding-motions; tappet-shafts.-In looms for weaving handkerchiefs &c. in which the shedding- motion is stopped to allow several picks to be inserted in a single shed, the vibration of the back-bearer is effected by a lever controlled by a cam participating in the movement of the shedding -eccentrics, so that the vibration of the back-bearer and the shedding-motion are stopped at the same time. The pivoted back-bearer 4 has an arm 17 connected by a pin-and slot device to a lever 15 resting on the cam 14 mounted on the picking-tappet shaft 11 carrying the shedding- eccentrics. The shaft is made in two parts adapted to be unclutched when the shedding is to be arrested. The lever 15 may be dispensed with, the lever 17 then engaging the cam directly.
Patent GB-130957-A (GB)
Title: Improved Percussion Fuses for Projectiles.
IPC: F42C15/24
Filed: 1918-11-27
Abstract: 130,957. Schneider et Cie. Aug. 3, 1918, [Convention date]. Projectile fuses.-Consists in a percussion fuse in which centrifugal members are normally interposed between the fuse body and the movable element (the striker or percussion cap carrier) of the firing-mechanism, and are prevented from' moving out of the way to permit operative movement of the firing-mechanism until the movable element has receded from the stationary element through a determined distance. In the fuse shown in Figs. 1 and 3, movement of a directaction striker C towards a fixed percussion cap B is' normally prevented by segments F interposed between the fuse-body and a sleeve D mounted on the striker, Fig. 1. The striker is also engaged by bolts I, which are themselves locked by a spring-pressed ring J. The rear portion of this ring keeps two flexible blades K clamped in a reduced portion of the stem of the striker. When the projectile is discharged, the ring J sets back, allowing the blades K to open out, whilst their central portions still remain engaged with a collar on the striker. When acceleration is over, the ring J is advanced by its spring G, and, acting through the parts K, pushes the striker forward into the position shown in Fig. 3. The segments F are thus uncovered, and, escaping by centrifugal force, leave the striker free to be driven against the percussion cap when impact occurs. In a modification, the outer sleeve D of the striker is dispensed with, and the centrifugal locking-segments surround the forward part of the stem of the striker and are interposed between the head of the striker and the end of the fuse body. The segments are so formed that a part of each one enters the central hole in the fuse body. The means whereby the striker is advanced by a member similar to the ring J, so as to release the segments, is also modified.
Patent GB-771092-A (GB)
Title: Improvements in nozzles for vacuum cleaners
IPC: A47L9/02
Filed: 1955-07-07
Abstract: 771,092. Suction cleaner nozzles. ELECTROLUX, Ltd. July 7, 1955 [Aug. 21, 1954], No. 19639/55. Class 8(1) In a suction cleaner nozzle having a side socket 13, Fig. 2, for connection to a suction line 12 and an elongated suction opening 16 bounded along its longitudinal sides by comb teeth 20, 21, the rear teeth 21 on the socket connection side of the opening 16 project downwardly to a less extent than do the front teeth 20. The short sides of the opening 16 comprise floor contacting surfaces 19, Fig. 1, which project from the nozzle body 14 to 'a greater extent than do the teeth 20, 21 which are of rounded form. The nozzle body 14 swivels on the connection 13 to allow a larger suction opening 15 ,to contact the floor. The rear teeth 21 may be vertically adjustable relative to the body 14.
Patent GB-1041414-A (GB)
Title: Improvements relating to the manufacture of cyclamates
Inventor: TURNER JOHN HARRY WALLICE
Filed: 1964-05-12
Abstract: Salts of cyclohexane sulphamic acid are made by a process which includes the step of reacting cyclohexylamine with stabilized liquid sulphur trioxide in an inert organic solvent.  Thus, cyclohexylamine may be treated at 20-40 DEG  C. with stabilized sulphur trioxide in methylene chloride and the product hydrolysed with calcium hydroxide and water to yield a solution of calcium cyclamate, after the methylene chloride and excess cyclohexylamine have been distilled off.  Another example describes the similar preparation of sodium cyclamate.  In both examples the sulphur trioxide is stabilized by addition of a boron ester.
Patent GB-445507-A (GB)
Title: Improved means for moving from the outside of a cathode ray tube, a body disposed within the envelope
IPC: H01J29/00
Filed: 1935-07-10
Abstract: 445,507. Stuffing - box substitutes. BOSCH, F. J. G. VAN DEN, 14, Norman's Buildings, Central Street, St. Luke's, London. July 10, 1935, No. 19684. [Class 122 (v)] [See also Group XL] Means for moving, from the outside of an airtight enclosure such as a cathode-ray tube 1, a body disposed within the enclosure, comprises a rod 4, carrying the body to be moved and passing through and movable within an open-ended tube 5 sealed into the enclosure, the outer end of the tube dipping into a flud such as mercury contained by a cup 6 which is integral with the rod 4 and is formed with screw threads engaging corresponding threads formed on the enclosure or on a member integral therewith. In the form shown, the cup 6 is secured to an internally threaded metal cylinder 8 engaging a threaded member 10 secured to the tube 5. Upon rotation of the cup 6, the rod 4 is moved axially within the tube 5, the mercury in the cup effectively sealing the enclosure and being kept from the tube 5 by the small clearance (up to 0À1 mm.) between the tube and the rod 4. The cup 6 may be of glass or ebonite. In a. modification the cup 6 is of metal lined with glass and threaded externally so as to engage a threaded member secured within the stem by an ebonite ring.
Patent GB-1136820-A (GB)
Title: Switching device
Inventor: SIMMONS JOHN GEORGE BERNARD
IPC: H01L49/00
Filed: 1966-05-04
Abstract: 1,136,820. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. 4 May, 1966, No. 19713/66. Heading H1K. A switching device comprises a first electrode layer 1 of N-type silicon, a film 3 of insulating material, and a second electrode layer 4 of an active metal (a monovalent metal, e.g. silver). A further metal electrode 2 is added and the completed device is subjected to an electroforming process. Insulating materials proposed for the film 3 are metal halides, silicon dioxide, and cadmium sulphide.
Patent GB-954025-A (GB)
Title: Improvements in control valves
Inventor: ADAMS FREDERICK JOHN
IPC: B62D5/087
Filed: 1960-06-03
Abstract: 954,025. Vehicle power steering. HYDROSTEER Ltd. June 5, 1961 [June 3, 1960], No. 19766/60. Heading B7H. A control valve for a motor vehicle power steering system has a resilient ring carried by a seating and which, in a steering movement, cooperates with an axially movable member of the valve, the seating being shaped so as to expand the ring when pressed upon by the axially movable member thereby creating a return bias. The steering mechanism may comprise an input shaft 2 fast with a worm 3 engaged by a follower 4 mounted upon a lever 10 connected to the drop arm 5 connected at 7 to the steering linkage. The worm 3 is mounted in a cylinder 3 containing a piston 8 connected at 11 to the follower mounting lever 10, a valve 1 having pressure fluid supply and return pipes 15 and 16 directing fluid to one side or the other of piston 8 to provide power assistance. The valve 1, Fig. 3, comprises an axially movable bobbin, the movement being caused by reaction of the steering worm transmitted through a ball race 13. The bobbin has control faces 19, 20 and 23, 24 co-operating with control faces 21, 22 and control members 25, 26 to direct the pressure fluid entering from pipe 15 to one side or other of the piston 8, the other side at the same time being connected to the return 16. The control members 25, 26 are freely movable and, upon axial movement of the bobbin, form sealing contact between the bobbin and the respective resilient ring 27 or 28 which is located upon a conical surface 29 or 30 so that the rings are expanded by the pressure and exert a return bias. The members 25 and 26 being open to the pressure fluid input, the fluid pressure also to some extent assists the return bias, and in addition, spring rings 17 and 18 may be provided to co-operate with shoulders 13 and further assist the return bias.
Patent GB-477922-A (GB)
Title: Improvements in or relating to dispensing receptacles for dispensing measured quantities of the contents
IPC: G01F11/34
Filed: 1936-07-16
Abstract: 477,922. Dispensing measured quantities. BARLOW, R., and JACKSON, J. M. July 16, 1936, No. 19784. [Class 106 (v)] A container for dispensing measured quantities of the contents comprises a neck portion 2, a measuring chamber 3 therein with a valve seating at the inner end, a valve 7 supported within the body of the container and movable by gravity to close the inner end of the chamber when the receptacle is tilted into the dispensing position, and a stem 10 extending from the valve into the mouth of the receptacle so that the valve may be held open by the operator while the measuring chamber is being filled. During filling, the measuring chamber outlet is closed by the hand or finger of the operator or by another valve member 17 provided at the outer end of the valve stem. The neck of the container may be provided with a liner 5, Fig. 1, flanged inwardly at 6 to form a seating for a disc valve 7, which has upwardly extending lugs 8 adapted to support the valve from the flange when the container is in the normal position. When an upper valve 17 is provided, Fig. 3, the lugs 8 are dispensed with.
Patent GB-1140203-A (GB)
Title: Improvements in and relating to the manufacture of filter elements
Inventor: STEVENSON PETER ALAN
IPC: A24D3/10
Filed: 1965-05-11
Abstract: 1,140,203. Tobacco smoke filters. COURTAULDS Ltd. 10 May, 1966 [11 May, 1965], No. 19797/65. Heading A2C. [Also in Division C3] A filter-tip for a cigarette comprises a foraminuous rod of regenerated cellulose and is produced from a mixture of a viscose, a water-soluble salt in the form of particles having an average diameter of less than 600 microns, and a particulate reinforcement filler by extruding the mixture through a die which comprises a straight tube of a thermally conductive material opening into and heated externally by an alkaline bath saturated with the ions of the water-soluble salt.