baber/WOPTO huggingface dataset:
Patent GB-592184-A (GB)
Title: Improved process for the alkylation of aromatic hydrocarbons
IPC: C07C2/68
Filed: 1944-11-17
Abstract: Aromatic hydrocarbons are alkylated by continuously passing a feedstock containing aromatics and olefins into the bottom of a reaction zone in which a body of aluminium chloride is agitated, introducing fresh catalyst into the top of said zone, overflowing reaction products and catalyst into a settling zone, removing reaction products, and recycling the liquid catalyst complex at least in part to the bottom of said reaction zone.  Reaction products are fractionated to recover the desired alkylate, for example mono-ethyl benzene, and unreacted aromatic hydrocarbon and high boiling products, for example benzene and poly-ethyl benzenes, which may be recycled.  A multi-stage process may be employed, the feed hydrocarbons being fed to the bottom of an initial reaction zone together with catalyst from a second reaction zone.  After intimate contact at a suitable temperature such as 160 DEG  F., the products and catalyst overflow to an initial settling zone, separated catalyst being recycled or part withdrawn, and the hydrocarbons passed to a second reaction zone into the top of which fresh catalyst is introduced.  Reaction conditions are adjusted to complete alkylation, and products overflow to a second settling zone where catalyst is separated and recycled in part to the initial and in part to the second reaction zone.  Unreacted aromatic hydrocarbon and high boiling products may be recycled to the initial reaction zone.  The respective zones may comprise any number of units.
Patent GB-718108-A (GB)
Title: Improvements in or relating to closures for containers
IPC: B65D39/12
Filed: 1951-10-02
Abstract: 718,108. Container closures. MAURER, A. Oct. 2, 1951, No. 22961/51. Class 125 (3). A closure device for jars, cans, &c., has a cover 14, the outer edge of which rests on a packing ring 13 in a groove 12 on the upper wall I of a constriction 7 in the neck of the container, which cover is pressed on to the packing by a resilient annular tensioning element 18.having alternate inwardly and outwardly extending slots 19, 20 to render it easily deformable. The centrally apertured disc 18 has in its inner opening a. supporting ring 21 which is moved up and down a threaded spindle 23 by a nut 22 the spindle head 24 being secured in a recess 25 of the cover 14. The container neck is flanged at its upper edge 8 to form a channel in which is a reinforcing ring 9 having a bevelled surface 10. When the nut 22 is screwed down the disc 18 expands and bears against the bevelled surface 10 and the cover 14 is urged into its packing ring 13 by a lever action. A vacuum in the jar can be broken by removing a screw 26. In a modification Fig. 4 the pressure is applied to the centre of the disc by a bell crank lever 35 having a roller 38 at its end engaging a cup-like ring 21a. In a further modification the disc 18 is actuated by an articulated lever connected to the cup 21a.
Patent GB-1065811-A (GB)
Title: Cinematographic camera having an exposure factor control device
Inventor: PLANERT WOLFGANG
IPC: G03B7/099
Filed: 1964-06-03
Abstract: 1,065,811. Exposure controls for cine cameras. PENTACON DRESDEN KAMERAUND KINOWERKE, VEB. June 3, 1964, No.22965/64. Headings G2A and G2E. A cine camera has a reciprocatory shutter blade 3 carrying a mirror 4 which has a number of mirror surfaces 6 situated in parallel planes 5. The mirror surfaces reflect light on to a photoresistance 7 in series with a galvanometer 8, battery 9, and a switch 10 operated by the camera release lever (not shown).
Patent GB-806902-A (GB)
Title: Process for the production of aliphatic nitriles
Filed: 1956-07-25
Abstract: Saturated aliphatic nitriles are prepared by passing a mixture of ammonia and a saturated aliphatic alcohol or aldehyde at a temperature of 300 DEG  to 650 DEG  C. over a catalyst consisting essentially of zinc oxide.  The zinc oxide may be deposited on a carrier such as pumice, alumina or quartz sand.  Periodic regeneration may be carried out in situ by passing through air while maintaining the zinc oxide at 300 DEG  to 650 DEG  C.  Prior to reaction the saturated aliphatic alcohols or aldehydes may be vaporized and mixed with dry ammonia gas.  This may be accomplished by introducing the alcohol or aldehyde dropwise into a heated vertical reaction tube filled with supported zinc oxide and simultaneously introducing ammonia under slight pressure at the upper end of said reaction tube; the nitrile is obtained from the lower end of the reaction tube.  Preferred reactants are saturated aliphatic alcohols or aldehydes containing from 3 to 8 carbon atoms.  Specified reactants are ethanol, propanol, butanol, isobutanol, hexanol, heptanol, decanol, cetyl alcohol and the corresponding aldehydes. Examples describe the preparation of isobutyronitrile and n-heptanonitrile.
Patent GB-269056-A (GB)
Title: Improvements in combined weighing and recording machines
IPC: G01G19/44
Filed: 1926-09-18
Abstract: 269,056. Vogel, F. C. C., (trading as Vogel & Halke). Aug. 11, 1926, [Convention date]. Printed records, apparatus for giving.-A personal weighing machine for recording the weight upon a card comprises a platform, weighing levers for supporting the platform, oscillating bell-crank levers pivoted on a fixed part of the under frame, each of the bell-crank levers being connected by one of its arms to one of the weighing levers and by its other arm to the other bell-crank levers, a weighted lever and a roller mounted on the boss of the weighted lever close to its axis, a slidable plunger adapted to make impressions on a card by the roller putting pressure on the slidable plunger on the fall of the weighted lever, a weighted rod connected with one bell-crank lever and adapted to raise the weighted lever on the platform being loaded, and a coin-freed mechanism to replace the weighted lever on the insertion of a coin in order to effect the printing of the card. The platform 3 is supported on the usual weighing levers 1, 2, Fig. 1, fulcrumed on links 5 and connected by a draw rod 14 to weighing springs 16. The links are suspended from bell-crank levers 6, 7 pivoted on the frame and connected to a rod 11 carrying a weight 12. When a person steps on the platform the bell-crank levers 6, 7 rock until arrested by stops 13. At the same time raising the rod 11, and the weight of the person is balanced by the springs 16 the extension of which causes a corresponding rotation of a type disc 18 in usual manner. The upper end of the rod 11 carries a counterbalanced slotted plate 33 connected by a rod 34 to an air brake. The slot 331 in the plate 33 has at the top an inclined portion in which a stud 36 is normally retained by a lock ing pawl 37 pivoted on the plate by a stud 38. A hook 40 carrying a spring 41 locks the pawl against displacement. As the slotted plate rises the stud 36 is carried upwards and takes with it a weighted lever 25 mounted upon a pivot 27 until ultimately the weighted lever is supported by a catch 29. At the same time a finger 43 carried by the boss of the weighted lever moves a card-feeding slide 20 to the right against the resistence of a spring 21. A pawl 22 retains the slide. The continued upward movement of the plate 33 presses the spring 41 against a stop 42 and frees the hook 40 from the locking pawl 37. If a coin is now dropped down a coin shoot 50 a lever 30 and rod 31 displace the catch 29 and the weighted lever 25 falls. A roller 28 on the boss of the lever passes over a plunger 24 and produces a printed record on the card below. The weighted lever strikes the left-hand arm of the pawl 22 and liberates the card-feeding slide 20 to feed forward another card from the magazine 23 and to eject the printed card down a delivery shoot 32.
Patent GB-684404-A (GB)
Title: Improvements relating to antiseptic sheeting
IPC: C08K5/00
Filed: 1949-09-06
Abstract: An antiseptic sheet is prepared by incorparating in a mix containing a vinyl resin, a bactericide scarcely soluble in water but soluble in the mix and a water-soluble substance soluble both in the mix and with the bactericide.  Specified bactericides are a mixture of isomeric benzyl cresols and orthobenzyl-para chlorophenol.  Specified substances having the required multiple solubility are dioctyl-sodium sulphosuccinate, sulphated castor oil and parachlormeta-cresol. Examples relate to the employment of polyvinyl chloride plasticized by dibutyl phthalate and containing, if desired, chlorinated paraffin wax as an extender. Pine-oil is referred to as an optional ingredient.ALSO:An antiseptic sheet is prepared by incorporating in a synthetic plastic mix, particularly a mix containing a thermoplastic synthetic resin such as a vinyl resin, a bactericide scarcely soluble in water but soluble in the mix and a water-soluble substance soluble both in the mix and with the bactericide.  Specified bactericides are a mixture of isomeric benzyl cresols, and orthobenzyl-parachloro-phenol.  Specified substances having the required multiple-solubility are dioctyl-sodium-sulphosuccinate, sulphated castor oil and parachlormetacresol.  Examples relate to the employment of polyvinyl chloride plasticised by dibutyl phthalate and containing if desired chlorinated paraffin wax as an extender. Pine-oil is referred to as an optional ingredient.  The first Provisional Specification also refers to compositions containing nitrocellulose or ethyl cellulose.
Patent GB-149539-A (GB)
Title: Improvements in burners for yarn-gassing machines
IPC: F23D99/00
Filed: 1919-09-19
Abstract: 149,539. Bottomley, E. Sept. 19, 1919. Perforated-tube burners. - A burner for yarn-gassing frames consists of two tubes a, b fed from a common air and gas mixing - chamber c through passages d, e controlled independently by taps a<1>, b<1>. The burner tube a is provided with gas-jet holes f near each end only and the burner tube b with gasjet holes h in its middle portion only. The burner tube a alone is used for gassing fine yarns, the burner tube b alone for gassing medium yarns, and both burner tubes simultaneously for gassing coarse yarns. The gas-jet holes are preferably inclined in the manner described in Specification 23368/09.
Patent GB-704798-A (GB)
Title: An apparatus for recording and reproducing sound
IPC: G11B15/40
Filed: 1951-10-03
Abstract: 704,798. Driving sound film or tape. MEOPTA, NARODNI PODNIK and HAMPL, J. Oct. 3, 1951 [Oct. 7, 1950], No. 23074/51. Addition to 673,275. Class 40 (2). In an apparatus of the kind described in the parent Specification, the slackening in tension of the tape, caused the vacuum produced in supply space 28 of the take-up reel motor 2 when the machine is suddenly stopped, is prevented by providing a channel 26 between the supply space 28 and the discharge space 27, a safety valve 29 being also provided between the supply space 30 of the supply-reel motor 1 and the reservoir 24. The channel 26 is provided with a valve, whereby the channel is closed while the motor 2 is driven and only becomes effective when the motor is stopped and a reverse pressure created. In a second embodiment both motors are provided with a channel connecting the supply space and the discharge space, and with a safety valve between the supply space and the reservoir, so that the invention is effective when both driving forward and rewinding.
Patent GB-598725-A (GB)
Title: Improvements relating to mounting arrangements for multi-pin plug-in devices such asrelays
IPC: H01R13/71
Filed: 1945-09-07
Abstract: 598,725. Two - part couplings. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Sept. 7, 1945, No. 23081. Convention date, Sept. 9, 1944. [Class 38 (i)] To enable electrical tests to be easily undertaken without disturbing the wiring, the external circuit contacts of a multi-pin plug-in device, e.g. signalling relay, rest in recesses long enough to permit them to be withdrawn without leaving the recesses. A mounting plate 1 has contacts 6 in recesses 1f in a projection 1b which enters a cavity 4a in a relay back-plate 4. The contacts 6 are clamped in by a movable plate 7 which slides longitudinally along the contact tails 6a under the control of screws 12 which, when the contacts are free, project from the plate 8. The tails 6a are pulled forward to enable tests to be made, the contact tips 6b remaining in the end of the recesses. Fig. 5 shows a modification in which a clamp 21 is moved transversely of the tails 6a by a cam 23 to release the contacts 6. The clamp 21 has apertures 21a, 21b to permit the movement of the contacts through it.
Patent GB-903962-A (GB)
Title: Microwave linear accelerator
Inventor: KELLIHER MAURICE GORDON
IPC: H05H9/02
Filed: 1959-07-06
Abstract: 903,962. Linear particle accelerators. HIGH VOLTAGE ENGINEERING CORPORATION. July 6, 1959, No. 23094/59. Class 39 (1). A microwave linear accelerator consists of a loaded accelerator and buncher waveguide section 2, fed by a power source 10 such as a magnetron, into which electrons are injected at less than the velocity of light, and utilizes negative feed-back via arm 7 from the beam emergent end of waveguide 2 to produce feedback energy, out of phase with the input power from source 10, at the input end of guide 2. The buncher waveguide is followed by a main accelerator waveguide 3 which the bunched beam enters at approximately the velocity of light. The phase velocity along waveguide 2 increases with the beam velocity. Phase shifter 11 shifts the phase of the feed-back by #, or phase shifter 11 may be dispensed with by suitably designing the waveguide bridge 4 into an annular rat-race waveguide or a magic T having a circumference of <SP>3</SP>/ 2 #, 6, 7, 8 being # 4 , # 2 , # 4 , from 5 so power from 10, 5 goes into 6, 8 but not into 7. The cross-section of the rat-race is varied to adjust the power it delivers to buncher waveguide 2. Power is fed via arm 6 and phase shifter 12 to the main accelerating waveguide 3.
Patent GB-635789-A (GB)
Title: A process for the production of di- and trichloracetaldehydes and acetals thereof
IPC: C07C45/51
Filed: 1947-08-20
Abstract: Di- or tri-chloracetaldehyde or their acetals are prepared by contacting ethyl alcohol in atomized condition with chlorine. Preferably the alcohol, in which may be dissolved or suspended a chlorination catalyst such as ferric chloride, is atomized with the aid of a fast rotary agitator to bring the alcohol in a finely-divided form into the space above the liquid in the reaction vessel and then chlorine gas is introduced into the atomized alcohol phase.  Operating in a continuous fashion, the alcohol is passed in cascade through reaction vessels, preferably three, in series, each provided with a centrifugal agitator and having a higher temperature than the preceding vessel and introducing chlorine counter-current to it; these vessels may be maintained at 20-30 DEG  C., 60-70 DEG  C. and 90-100 DEG  C., respectively.  Alternatively, the alcohol may be atomized into the reaction space with the aid of chlorine gas.  To minimize formation of ethyl chloride, the liberated hydrogen chloride is removed as rapidly as possible; this is facilitated by working at somewhat reduced pressures.  By adjustment of the chlorine supply, di- or trichloracetaldehyde may be obtained but preferably chlorination is only carried to the alcoholate or acetal stage, the pure aldehyde being obtained by distillation of the reaction product with sulphuric acid or an organic acid such as acetic acid.  In an example, ethyl alcohol containing ferric chloride as catalyst is atomized in a glass still by means of a centrifugal agitator and chlorine is passed into the atomized alcohol phase at 25-30 DEG  C. until the reaction liquid has a specific gravity of 1.0, whereupon the temperature is raised to 90-100 DEG  C. and chlorine then passed in rapidly until the specific gravity is 1.47 whilst evaporated alcohol is condensed and returned to the still and gaseous hydrochloric acid is discharged to a scrubber; the yield as compared with the lower yield obtained in a similar experiment using normal stirring.  Specifications 629,699 and 644,916 are referred to.
Patent GB-947832-A (GB)
Title: Inverter
IPC: H02M1/32
Filed: 1962-06-15
Abstract: 947,832. Converting. WESTINGHOUSE ELECTRIC CORPORATION. June 15, 1962 [July 7, 1961], No. 23168/62. Heading H2F. A circuit supplying alternating current to a load has at least one semi-conductor switching device connected between the source and the load to pass load current, and a series combination of a rectifier and an energy storage device, such as a capacitor, is connected across the switching device so that when it is turned off the storage device is charged through the rectifier by the load current by-passing the switching device. In the Figure, a bi-phase inverter 1 having transistors 14, 16 is driven by an oscillator 18 and supplies the load 40 through output transformer 2 and saturable inductors 46, 48. If the load current has a lagging power factor, current must flow after the transistors are turned off, and this is made possible by diodes 58, 60. As these diodes cannot take over the current instantaneously when the transistors turn off, current pulses would have to flow through the transistors when they have an impedance greater than their minimum. With the arrangement of the invention these current pulses charge the capacitors 28, 34 through the diodes 32, 38, thus preventing damage to the transistors. The capacitors are then discharged through the resistors 30, 36. A bridge circuit is also described (Fig. 2, not shown).
Patent GB-867079-A (GB)
Title: Improvements relating to aircraft
IPC: B64C39/00
Filed: 1957-07-22
Abstract: 867,079. Aircraft. SEBAC NOUVELLE S.A. July 22, 1957 [July 24, 1956], No. 23189/57. Class 4. An aircraft of discus plan-form capable of vertical and horizontal flight and of hovering stationary in the air comprises a body 36 housing a central gas generator 37 which supplies pressure gas through pipes 38 to a plurality of blowers of ejector nozzles 39 disposed radially about the vertical axis of the aircraft to discharge through helical chambers 41 into radial ducts 42 and a chamber 43 from which it is discharged downwardly through nozzles 46 having thrust directions 48 which meet at a point 49 located above the aircraft. The chamber 43 communicates also with radially directed propulsion nozzles 47 which may be controlled selectively to propel the aircraft in normal flight, the thrust axes of which intersect substantially at the centre of gravity of the aircraft. A pair of diametrically aligned nozzles 39 are shown in Fig. 3, each comprising annular hollow chambers 9, 9a which are fed with pressure gas from generator 37 through conduits 10, 12 to exhaust through slots 13. The flow of gas from the slots, by a Coanda effect, entrains air drawn into the aircraft through apertures 50 in its upper surface and discharges it through the convergent-divergent section 18, 24 from which it is directed to the lifting and propulsion nozzles as previously described. The flow of air is directed by a central body 22. In a further embodiment, Figs. 5 and 6 (not shown), the shaft nozzles 46 are supplemented by other orientable nozzles arranged around the periphery of the aircraft and which may be adjusted so that their resultant direction of thrust may be inclined to the normally vertical axis of the aircraft to create a component of lateral thrust. Specifications 456,063, 736,210, 837,117 and 866,916 are referred to.
Patent GB-1024171-A (GB)
Title: Improvements in windscreen wipers
Inventor: KIRK WILLIAM ARTHUR
IPC: B60S1/40
Filed: 1961-06-27
Abstract: 1,024,171. Windscreen wiper connections. TRICO-FOLBERTH Ltd. July 10, 1962 [June 27, 1961], No. 23267/61. Heading A4F. A windscreen wiper unit comprises an arm 1 (Fig. 1, not shown) with notches 3 and connected by a clip 2 to a wiper blade, said clips being formed from a channel member having a web portion 8 and two side flanges 10 and 12 and comprising first stops 16 (Fig. 2, not shown) which engage with the notches 3 in the arm in order to prevent it moving towards the open end of the channel member, second stops 15 which engage the face of the arm opposite to that which lies against the web portion 8, and a resilient member 18, e.g. a rubber block, which urges the arm towards the open end of the channel member when the arm has been connected within the channel member. The connection is such that upon a deliberate movement of the arm 1 against the resilient member 18 the second stops 15 come into register with the notches 3 and the arm may then be separated from the channel member. The first and second stops are projecting portions 13 formed from L-shaped lugs as shown at 14. Alternatively the first and second stops may be formed by two hooks 26 and 28 (Fig. 4, not shown) having been deflected out of the web portion. Further, the first stops may be formed from lugs 40 (Fig. 6, not shown) out of the web, and the second stops are lugs bent over from the side flanges of the channel member.
Patent GB-279798-A (GB)
Title: Improvements in locomotives
IPC: B61C9/10
Filed: 1927-09-05
Abstract: 279,798. Buchli, J. Oct. 27, 1926, [Convention date]. Railway locomotives, internalcombustion engine.-A locomotive comprises a main frame 13 carried on two driving bogies 4, 4<1> connectefi.. together by draw and buffing gear 12, the bogies being driven by internal-combustion engines 16, 16<1> and change speed gears 17, 17<1> mounted on the main frames through bevel and spur gearing 11, 5 carried by the bogies.
Patent GB-851570-A (GB)
Title: Process of purifying maleic anhydride
Filed: 1958-07-21
Abstract: Maleic anhydride is purified by contacting a gaseous mixture of crude maleic anhydride and a gas containing free oxygen with graphite or coke, at a temperature of 300 DEG -450 DEG C.  It is particularly applicable to the purification of maleic anhydride prepared by passing benzene and an oxygencontaining gas over an oxidation catalyst, e.g. vanadium oxide.
Patent GB-720021-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H9/46
Filed: 1951-10-08
Abstract: 720,021. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 8, 1951 [Oct. 7, 1950], No. 23389/51. Class 38 (5). A circuit-breaker with main current-carrying contacts 9, 12 and arcing contacts 10, 16, has its moving arcing contact 10 co-operating with the fixed arcing contact 16 through an aperture 22 in an arc runner 21 which forms a barrier extending between the fixed arcing and current-carrying contacts, ionized gases issuing from the aperture 22 when the arc is initially struck, being deflected into the arc chute 24 by a barrier 23. As the tip of the contact 10 emerges from the aperture 22, the upper arc root is transferred from the contact 16 to the arc-runner 21. A blow-out coil 25 connected between the fixed contact-carrying member 11 and the arc-runner 21 which is otherwise insulated from the fixed contacts 12, 16, is then connected in series with the arc. As the moving contacts 9, 10 approach their fully-open position, the lower arc root is transferred from the contact 10 to an arc runner 26, so connecting a second blow-out coil 27 in series with the arc. A third blow-out coil 30 is connected in series with the arc when the upper root transfers from the arc runner 21 to an arc runner 29 as the arc is blown into the chute 24. The deflecting barrier 23 may be carried by the moving arcing contact 10, as shown, or fixed relative to the aperture 22.