baber/WOPTO huggingface dataset:
Patent GB-900356-A (GB)
Title: Manufacture of 1,2-dicyano cyclobutane
IPC: C07C255/45
Filed: 1960-01-25
Abstract: 1,2-Dicyano-cyclobutane is prepared by heating acrylonitrile, at a temperature between 180 DEG C. and 260 DEG C., for up to 6 hours under an inert gas pressure, in the presence of an oxygen compound of nitrogen, sulphur, or carbon in which the oxygen does not exhibit maximum valency, or alternatively in the presence of a compound evolving such a compound under reaction conditions.  The acrylonitrile is dimerised, and the compounds specified are nitrogen and carbon monoxides, and sulphur dioxide and monoxide, and diphenylnitrosoamine or nickel tetracarbonyl which yield these compounds.  The compounds are present in an amount of from 0.01% to 1.00%, and are in a gaseous state under the reaction conditions, e.g. under a pressure of nitrogen, argon, or hydrogen between 10 and 100 atmospheres.  The unreacted acrylonitrile may be removed by distillation and recycled, and the product, a cis-trans mixture redistilled, under vacuum, to separate the isomers.
Patent GB-396097-A (GB)
Title: Improvements in or relating to the manufacture of unsplinterable composite articles such as safety glass
IPC: B32B17/10
Filed: 1932-01-29
Abstract: Sheets of glass, porcelain, enamel, cellulose acetate, or condensation products of formaldehyde with phenol or urea are coated with solutions of wholly or partially polymerized or polymerizable unsaturated organic compounds such as vinyl acetate, butadiene and esters of acrylic or methacrylic acid by apparatus comprising an endless belt 2 travelling around cylinders 1 and provided with endless rubber bands 5 and ledges 7 which are held in contact with the lateral edges of the glass plates 3 by <PICT:0396097/III/1> <PICT:0396097/III/2> <PICT:0396097/III/3> coil springs 6.  The solution, fed under pressure from a container in which it is preserved out of contact with air, issues from a heated container 11 through an adjustable transverse slot 12. Coatings of adhesive may be applied by spraying or pouring or by means of a container 32, Fig. 7, which is provided with a sheet 33 of absorbent material such as felt, one end of which dips into the liquid while the other end contacts with the sheet 34.  The coated sheets then traverse a tunnel-shaped evaporating chamber 16 mounted over the belt, a current of hot air being introduced through a tube 17 provided with a damper 18 and exhausted through a tube 19 by a fan 21, while the solvent is recovered in a condenser 24.  An intermediate chamber (not shown) may be inserted between the pouring vessel 11 and the evaporating chamber 16 to prevent evaporation of the solvents and allow gases to disperse.
Patent GB-965082-A (GB)
Title: Improvements in or relating to detachable couplings securing a brass tool to a press
Inventor: BLACK JOHN
IPC: B21J9/12
Filed: 1960-01-26
Abstract: 965,082. Forging. DAVY & UNITED ENGINEERING CO. Ltd. Jan. 26, 1961 [Jan. 26, 1960], No. 2783/60. Heading B3H. [Also in Division E2] A coupling detachably securing a press tool to a press comprises a piston-rod 21 operatively connected to the press tool, the piston being slidable within a cylinder 13 carried by the press, spring means 23 urging the piston inwardly of the cylinder to hold the tool and press together and means for selectively applying fluid under pressure to the cylinder to oppose the action of the spring means to permit the tool to be detached. As shown, the cylinder 13 is secured to a platen 11 of the press by bolts 14; the piston-rod 21 is extended by means of a sleeve 30 attached to the rod 21 by a bayonettype catch 31 and a tool-holder 12 is attached to the sleeve by a cotter 32 which passes through a slot in it. The rod 21 terminates at its upper end in a piston 19 and the piston is urged towards the upper end of the cylinder 13 by the resilient means 23 which are spring discs located between the piston 19 and an endplate 24 of the cylinder 13 and surrounding the rod 21. The resilient means 23 act to retract the rod 21 inwardly of the cylinder and thus to pull the holder 12 into close engagement with the platen 11. The upper end of the cylinder is closed by a plate 17 having a bore connected to a pipe 29 which leads to a source of pressure fluid which enables the piston to be moved in opposition to the pressure of the spring discs 23 thus allowing the holder 12 to move away from the platen 11 and, provided the weight of the holder 12 is taken by a support member, allowing the cotter 32 to be readily removed from the slots in holder 12 and sleeve 30 to release holder 12. Sleeves of different length can be used for attaching different holders to the platen 11. The press may have a plurality of couplings, each controlled by hydraulic valves.
Patent GB-751502-A (GB)
Title: Improvements in chairs or other seating structures
IPC: A47C7/32
Filed: 1954-01-29
Abstract: 751,502. Spring surfaces. OSOKOSI UPHOLSTERY (1939) Ltd., and REBAK, A. May 13, 1954 [Jan. 29, 1954], No. 2788/54. Class 52(4). In a spring surface for chairs &c., of the kind wherein radial resilient members 1 the outer ends of which are connected to side members 3 are provided, the inner ends of the radial members are interconnected by a common flexible interconnecting member built up of links 7 interconnected so as to be capable of relative angular displacement. The resilient members are preferably tension springs sheathed in rubber. The connections to the corners of the supporting frame comprise wire eyes 2 having an inwardly directed end 2 to engage an eye on the frame, the other end being hooked to engage a side member 3. Subsidiary resilient members 6 are arranged between the members 1. Specification 712,797 is referred to.
Patent GB-1097991-A (GB)
Title: Laser system
IPC: H01S3/11
Filed: 1965-01-21
Abstract: 1,097,991. Lasers. TRG Inc. Jan. 21, 1965 [Feb. 19, 1964], No. 2794/65. Heading H1C. A laser is Q-switched by a saturable absorber in the optical cavity which may be of the same material as the laser active medium. Solid, liquid or gas laser active mediums and saturable absorbers may be used. A ruby laser is shown in Fig. 3 in which the optical cavity is formed by a partially reflecting surface 18 of a ruby rod 10 and an external mirror 27, a saturable absorber rod 25 also of ruby being located in the cavity between the mirror 27 and a converging and collimating lens system 22 for the beam, emitted by the active medium. Only the ruby rod 10 is pumped by a conventional system comprising a lamp 15 contained in a reflector 16. For laser operation to commence the gain of the pumped ruby rod 10 must increase until the threshold condition for oscillation is reached, this condition being determined by reflection losses and by absorption of the radiation in the absorber rod 25. When threshold is reached the gain of the ruby rod 10 tends to reduce, and at the same time the loss in the absorber rod 25 reduces due to the removal of atoms from the absorbing ground state. If the reduction of gain and loss in the ruby rod 10 and the absorber rod 25 respectively occurs at the same rate, as in the case of equal radiation intensity in both mediums, then the threshold condition will not be exceeded. For this reason the lens system 22 is provided so as to reduce the beam width applied from the ruby rod 10 to the absorber 25 and thereby increase the radiation intensity in the latter medium. The optical radiation will then build up above the threshold until a peak when the absorber becomes transparent and a giant output pulse produced. The use of a lens system is not necessary when suitable different mediums are used for the laser active medium and the absorber. The lens system may also serve to suppress unwanted modes, Fig. 6 (not shown). An R.F. pumped gas laser is described with reference to Fig. 5 (not shown), which has a gaseous absorber 25 located in an optical cavity defined by a contiguous mirror 57 at one end of the laser gas tube 50 and an external mirror 27, internal light transmitting surfaces 59, 61, 62 being at the Brewster angle. In the case where the active medium and absorber gases are different the absorber gas is preferably molecular such as iodine or bromine. Atomic gas may alternatively be used.
Patent GB-542483-A (GB)
Title: Improvements in hollow-spindle chucks
IPC: B23B31/26
Filed: 1941-03-03
Abstract: 542,483. Chucks. FAIRWEATHER, H. G. C. (National Acme Co.). March 3, 1941, No. 2854. [Class 83 (iii)] The hollow spindle 2 has fixed upon it an abutment 5 carrying a cam 7 engaged by rollers 16 for example six, carried by pins 17 between links 15 with knuckle ends received in sockets in an abutment 10 adjustable at 9 on the draw spindle 4. Cams 20 secured to a sleeve 18 grooved at 19 for the chuck operating mechanism depresses the rollers to straighten the toggle and close the collet.
Patent GB-1279974-A (GB)
Title: Improvements in or relating to drilling machines
Inventor: FITCH CLIFFORD KINGSBURY
IPC: B23B31/02
Filed: 1969-05-07
Abstract: 1279974 Drill spindles KINGSBURY FITCH (DEVELOPMENTS) Ltd 1 July 1969 [7 May 1969] 2870/72 Divided out of 1279973 Heading B3C A spindle 64 of a drilling machine is fitted with a drill 86, the spindle and drill having mating inclined faces 84, 87, and end faces 85, 88, and are embraced by a sleeve 89.
Patent GB-665628-A (GB)
Title: Improvements in or relating to liquid level devices for tilt detection
IPC: G01C9/24
Filed: 1949-02-02
Abstract: 665,628. Electric indicating systems. SQUIRE, A. M., and SPERRY GYROSCOPE CO., Ltd. March 3, 1950. [Feb. 2, 1949] No. 2872/49. Class 40 (i); [Also in Groups XX and XXXVI] In a device for detecting the tilt of a platform and controlling an electrical circuit energizing a tilt indicator or a torque device for nullifying the tilt, a circular container 1 (Figs. 1, 2) contains a resistive liquid e.g. picric acid in an alcoholic solvent surmounted by a bubble 2 of e.g. air, nitrogen, or a nonconductive immiscible liquid. Four symmetrical electrodes 4, 6, 7, 8 and a central electrode 5 protrude into the liquid, and the bubble and electrodes are dimensioned so that the latter do not touch the bubble within the operational limits of the device, and the bubble deflection varies the cross sections of the paths in dependence on the degree and direction of tilt while the path lengths remain constant. The consequent resistance variations between the electrodes operate known circuitry (e.g. balanced bridges) to operate a tilt indicator or torque devices maintaining the platform vertical. The device may control the erecting torques of a gyrovertical used as a stabilising reference for the platform. In a modification, Figs. 3, 4 (not shown), the liquid and bubble are contained in a bent tube having a central electrode and symmetrical side electrodes, and sensitive to a single direction of tilt.
Patent GB-234866-A (GB)
Title: A rail motor car
IPC: B61C5/00
Filed: 1924-02-04
Abstract: 234,866. Sternberg, A. Feb. 4, 1924. Controlling-apparatus, arrangements of hand, foot, and transmission gear in conjunction with; controlling different functions by same handle; interlocking; control gear for driving in either direction.-A rail motor-car having a plurality of separate driving systems, each comprising a wheeled driving truck and an internal-combustion engine power unit, is controlled by means whereby any one or more than one of the driving systems may either be brought into action or rendered inoperative. One-half of the driving and controlling system of a vehicle is shown, comprising an engine 4, a clutch 6, and a gear-box 5, all controlled by shafts 1, 2, 3, arranged at each end of the vehicle. The shaft 1 rotates a sprocket wheel 14 connected by a chain 20 to a similar sprocket at the other end. Arms 15. 16 are so arranged that when the sprocket is rotated counterclockwise the switch 17 for the motor-starter 12 is closed, the ignition is retarded and the throttle 19 is opened, whereas when the sprocket is rotated clockwise the switch 17 is opened, the ignition is advanced and the throttle is again opened. The shaft 2 is connected by a chain 9 to a cam disc 8 which controls the change-speed gear and bv means of a switch 7 breaks the circuit of the electrically-controlled clutch 6 at every change of gear. The two separate cam discs are connected together by a chain. A switch lever 21 is connected by rods 22, 23 to the shaft 3, one at each end of the vehicle. This switch controls the circuits from the batteries 24, 25 to the different motor controls. In the position shown both motor-units would be working, but if the switch is moved (say) counterclockwise the clutch circuit and the motor starter circuits of the motor unit shown would be broken and the magnets short-circuited. The other motor unit would be unaffected. If an hydraulic variable gear is employed, the clutch 6 would be dispensed with. A free-wheel clutch may be provided between each motor unit and the track wheels to allow the latter to over-run the driving gear in case of the breakdown of any motor.
Patent GB-650264-A (GB)
Title: Improvements in or relating to supports for holding goods
IPC: B65D19/12
Filed: 1948-01-30
Abstract: 650,264. Boxes. BARRON, H. C. N., and PALLETS, Ltd. Jan. 30, 1948, No. 2881. [Class 18] [Also in Group XXX] The load-supporting surface-member of a pallet or stillage comprises two sheets of metal disposed face to face and connected together at points distributed over their surface by spacing elements which serve to space them apart. In the construction shown in Figs. 1, 2 and 5 the spacing elements comprise depressions 14 in the sheets 11, 12, some of the depressions being spotwelded together, and the sheets are further .spaced and connected by channel section irons 15 at their edges, the flanges 16 of which are welded to the sheets, and the webs of which are formed with holes 17 permitting entry of a welding electrode 18. The pallet is provided with legs 20 formed of sheet metal bent to the A shape shown and provided with side flanges 23, (see Fig. 3 which shows part of the pallet inverted) and with flanges 24, the latter being welded to longitudinals 26 comprising upper and lower sheet metal plates bent and welded together to form a hollow plank with bevelled edge. Preferably there are three such longitudinals in the base, each supporting three legs 20. Rectangular recesses cut in the corners of the pallet and enclosed by angle pieces 30, serve to support crate-sides 31, 32, 33, 34, each comprising a pair of channel iron uprights 35, 36, connected by corrugated cross-members 37 welded by their corrugations to the flanges of the members 35, 36, and a top channel iron 38. The lower ends of the uprights 35, 36 fit into the corner recesses, and the sides 31, 32, 33, 34 are joined at their upper corners by corner plates 40 which fit over and hold together the upper members 38 of the sides. The corner plates 40 are formed with bulges 41 which fit into corresponding recesses 42, Fig. 3, in the base planks 26 of a further pallet supported on the tops of the crate-sides. One or more of the horizontal members 37 of the sides may be detachable or hinged, being normally held in place by sliding bolts. The corner plates 40 may be replaced by catches holding the sides together, the pallet being then formed with tubular legs having projections which engage in the corners of the sides of the pallet below. The sides 31, 32, 33, 34 may be held in place by downwardly projecting nibs which engage in recesses along the edges of the load-supporting surface. Reference is made to U.S.A. Specification 1,876,807.
Patent GB-1474296-A (GB)
Title: 4-aminoquinoline derivatives
IPC: C07D215/44
Filed: 1975-01-23
Abstract: 1474296 4-Aminoquinoline derivatives JOHN WYETH & BRO Ltd 23 Jan 1976 [23 Jan 1975] 2924/75 Addition to 1416872 Heading C2C The invention comprises compounds of formula and their acid addition salts, wherein X is halogen or CF 3 ; Z is H, halogen, CF 3 , OH, NO 2 , R, RO, RNH or (R) 2 N, where R is C 1-6  alkyl; R<SP>1</SP> is H or R; and R<SP>2</SP> is RNH-A or (R) 2 N-A (A being C 1-6  alkylene), or piperidyl (optionally 1-substituted by aryl-A- or R); or NR<SP>1</SP>R<SP>2</SP> is RNH- or (R) 2 N- substituted piperidine. In examples, these compounds are prepared by reacting the corresponding acid chloride with HNH<SP>1</SP>R<SP>2</SP>. Therapeutic compositions having antiinflammatory activity, and in certain eases antihypertensive or blood platelet aggregation inhibiting activity, comprise compounds of the above formula, and may be administered (e.g.) orally or parenterally.
Patent GB-822582-A (GB)
Title: Screw and nut mechanisms
Inventor: MILLNS TERENCE WILLIAM
IPC: F16H25/22
Filed: 1957-01-28
Abstract: 822,582. Screw-and-nut gearing. ROTAX Ltd. Jan. 17, 1958 [Jan. 28, 1957], No. 2936/57. Class 80 (3). In a jack or other screw-and-nut device employing recirculating balls the nut comprises two cylindrical parts a, a<SP>1</SP> mounted for relative angular adjustment within a sleeve b in order to prevent backlash, each nut part having a separate train of balls. Each nut part a, a<SP>1</SP> abuts a central shoulder c in the sleeve and is prevented from rotation by interengaging castellations g. When angular adjustment of one or other nut part is required the associated set of balls is withdrawn and the nut part is axially retracted to disengage the castellations. The thread grooves are wider than the ball diameter, Fig. 2 (not shown), so that only one nut part is operative for each direction of movement of the screw.
Patent GB-812160-A (GB)
Title: Improvements in or relating to machines for separating stones from potatoes
Inventor: FRIEDRICH CARL HANS
IPC: B07B13/00
Filed: 1956-01-31
Abstract: 812,160. Separating solid materials. LOW. C.. CARGILL, D. W. H., and WARRANDER, C. S. June 19, 1956 [Jan. 31, 1956], No. 3031/56. Class 117 From the digger 11 of a potato harvester potatoes and stones pass 'from a shoot 8 to a conveyer chain 2 provided with blades 10, and are pushed over a stationary board 1 in which slots 3 and 6 are arranged. The smaller stones fall through the slot 3 but an upwardly directed air jet prevents the smaller potatoes from falling through. Spring loaded boards 4 extending transverse the conveyer prevent stones clogging the slot. Potatoes and the larger stones are pushed along to the slot 6 where an upwardly directed air jet blows the potatoes up the blades 10 to a conveyer 7 which delivers them to a shoot 9. The large stones are pushed over the end of the board.
Patent GB-415761-A (GB)
Title: Improvements in and relating to magneto-electric machines
IPC: F02P1/00
Filed: 1933-02-01
Abstract: 415,761. Magnetos. BRADFORD, W., 54, The Pryors, Hampstead, London. Feb. 1, 1933, No. 3149. [Class 35.] Mounting rotors.-A magneto rotor is mounted on the extension of an engine shaft and the circuit breaker is actuated by a cam formed in the shaft, whilst the shaft is also profiled to provide a seating for the magneto rotor which is thereby keyed thereto. The shaft may be the crank or cam shaft of the engine. As shown, the circuit breaker is actuated by a cam 25 formed on the crank shaft 11 and the rotor has a sleeve or end plates 20 with openings 21 which fit the D-shaped portion 15 of the shaft, the rotor being secured axially by a nut or by a projector 23 which extends into a groove 24 in the shaft. The rotor comprises bar magnets 16 with or without end laminµ 17 disposed on a non-magnetic sleeve. The stator is mounted on the crank case or other part of the engine and has slots to permit angular adjustment for altering the timing ; its position may be adjusted by a Bowden wire attachment or the like acting against a spring.
Patent GB-1167757-A (GB)
Title: Improvements in and relating to Luminescent Substances
IPC: H01F1/03
Filed: 1967-01-23
Abstract: 1,167,757. Colour television; cathode-ray tube circuits. VEREIN ZUR FORDERUNG DER FESTKORPERPHYSIK AN DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE. 23 Jan., 1967 [21 Jan., 1966], No. 3304/67. Headings H4F and H4T. [Also in Divisions C4 and H1] A colour TV display system includes a luminescent magnetic chemical compound containing at least one chemically combined element with an incomplete inner electron shell, in addition to activators, the compound being in a magnetic field, variation of which controls the colour of emission. The current in magnet coil 44, Fig. 6 (and Fig. 8, not shown), from stepped voltage generator 50 and amplifier 51 is varied in synchronism with the separate colour input signals at decoder 46. The luminescent substance, specific examples of which are instanced, may itself exhibit remanence, be mixed with particles such as ferrites, exhibiting remanence, or be deposited on a layer having this property in which cases, short, negative changing to positive step functions (Fig. 9, not shown) rather than continuous signals (Fig. 7, not shown) are applied to the coil at the start of each field scan. A signal to coil 45 or conventional deflectors 42, 43 proportional to the coil 44 signal compensates for the electron beam deflections produced by the coil 44 field. Alternatively, the images from a monochrome screen (70), (Figs. 13 and 14, not shown), may be optically projected on to a colour screen (73) encircled by a magnet coil (44). The screen (73) on an opaque magnetic body (75) such as a ferrite, and a projection mirror lens (76) may be enclosed in a casing (77) maintained at a temperature at which the slope of the magneto-optical characteristic curve is optimum (Fig. 3, not shown).
Patent GB-595008-A (GB)
Title: Improvement in automatic gain control
IPC: H03G3/22
Filed: 1945-02-09
Abstract: 595,008. Automatic gain control. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 9, 1945, No. 3368. Convention date, Jan. 28, 1942. [Class 40 (v)] An automatic gain control circuit for removing very low-frequency signal amplitude variations and also comparatively high-frequency variations, for example in a rotating radio beacon receiver, such as that described in Specification 503,717, comprises a rectifier producing voltage pulses which are clipped at a level depending on amplitude variations in the pulses and applied as gain control voltage to a preceding amplifier. In one embodiment, Fig. 1, a pentode signal amplifier 10 feeds a full-wave rectifier producing, across its load resistance 16, half-wave pulses e as shown in Fig. 2a. The positive end of 16 is connected through resistance 22 to the anode of a triode valve 17 and its negative end to the cathode, the grid being earthed. A condenser 24 is connected between anode and grid, and resistance 26 between grid and cathode. The A.G.C. voltage is developed at the cathode and is fed through a short time-constant filter 28, 29 to a grid of valve 10. When a pulse is applied to valve 17, grid current flows for part of the time during which the A.G.C. voltage across resistance 26 remains constant and condenser 24 becomes charged to a voltage depend - ing on the pulse amplitude. During the next pulse, the flow of grid current commences at a signal voltage dependent on the voltage to which condenser 24 is charged during the preceding pulse. The resulting output voltage is as shown at e1, Fig. 2b, which is smoothed as at x by the filter 28, 29. If the anode is earthed instead of the grid, the resulting A.G.C. voltage is of the waveform shown in Fig. 2c. In a second embodiment, Fig. 3 (not shown), the rectified signal pulses are applied to the anodes of a symmetrical multivibrator and the square output pulses at the two multivibrator anodes are combined to produce a voltage similar to that in Fig. 2b, the amplitude being dependent on the signal voltage.