baber/WOPTO huggingface dataset:
Patent GB-1291366-A (GB)
Title: Magnetic tape
Inventor: KRALL HARRY JOHN
IPC: G11B5/845
Filed: 1970-02-24
Abstract: 1291366 Magnetic recording medium EASTMAN KODAK CO 24 Feb 1970 [24 Feb 1969] 8717/70 Heading H1H A magnetic recording medium is made by applying a liquid dispersion of magnetic particles to a web support, exposing the particles to a unidirectional magnetic field so as to similarly orientate them, drying the magnetic layer, and exposing it to alternating magnetic fields of progressively decreasing strength so that the magnetic layer acquires a substantially null magnetic moment. The support may be a cinematographic film provided with an uncoated longitudinal strip, on which the magnetic recording layer is deposited. The alternating magnetic fields may be provided by an array of similar bar magnets disposed normally to the web at successively increasing distances from it, or by equally-spaced magnets of different strength or orientation, or by electromagnets. At least one of the magnetic fields may be of sufficient strength to reverse the direction of all the fields of the magnetically saturated particles within the layer.
Patent GB-842457-A (GB)
Title: Step assembly
Inventor: CALDERWOOD CHARLES ROPER JACKS
IPC: B64F1/315
Filed: 1957-03-18
Abstract: 842,457. Ladders. MINISTER OF AVIATION [formerly MINISTER OF TRANSPORT & CIVIL AVIATION], SPURLING MOTOR BODIES Ltd., and CALDERWOOD, C. R. J. March 11, 1958 [March 18, 1957], No. 8762/57. Class 20(2) A step assembly for use in boarding aircraft comprises a wheeled chassis 11 on which are mounted fixed steps 12 and steps 13 which slide on an axis parallel but below the steps 12, and a platform 36 at the top of the fixed steps adjacent a step of the slidable steps. The chassis 11 is made of mild steel tubing and provided with castor wheels 17, towbar 19, legs 20 and drum brakes operated by a lever 16. The steps, which are made of extruded aluminium, have side panels 24, handrails 25 and undercut treads 27 faced with non-slip material. The steps 13 slide in guides under control of a handle 35 or lever and screw 34 and safety ratchet 37. A step indicator 38 assists alignment of the steps 13 with the platform 36. Another platform 30 at the top of the steps 13 has a floor 32 and roller cushion 33 which is extensible to the aircraft side by means of a pinion and rack situated beneath the platform 30.
Patent GB-1399403-A (GB)
Title: Display-panel systems
IPC: G08B5/36
Filed: 1972-02-25
Abstract: 1399403 Display panels PLESSEY CO Ltd 16 April 1973 [25 Feb 1972] 8797/72 Heading G5C In a display panel for indicating the availability of machines, such as fire engines, a display area 2 has a separate row 9 for each machine which may be selectively illumined in three different ways by means of three-position switches 11 to show that a particular machine is available, not available, or available later at a given position (fire-station), the distance or time separating that position from the required position (telephone exchange or calling point, being selectively indicated by superposing on area 2 a punched card 3. The distance of the selectively illumined apertures 12 on the card from its left-hand edge indicates the required time or distance for particular machines. A different punched card 3 is used to correspond to each calling point. In another form, the punched card is dispensed with, and each position on the display matrix is represented by a separate selectively energizable lamp by means of key-operated circuits one for each calling station. The time factor may alternatively be shown by varying the colour of the lamp 5.  Another form uses a cathode-ray tube display of the matrix.
Patent GB-1104161-A (GB)
Title: Improvements in or relating to clutch or brake mechanisms
IPC: F16D25/08
Filed: 1965-03-02
Abstract: 1,104,161. Friction clutch combinations; clutch - brake combinations; disc brakes. NATIONAL ACME CO. 2 March, 1965 [2 March, 1964], No. 8898/65. Headings F2C, F2E and F2L. In a double friction clutch or friction clutchbrake combination, a rotatable driven body 10 is selectively and alternatively connectible to either of bodies 11, 12 by engaging devices each of which comprises discs 14, 15 alternately splined to the body 10 and the body 11, (12), and frictionally engaged by an annular, fluid pressure, e.g. pneumatic, actuator 33 in a stationary housing 34 surrounding and rotatably supporting the driven body 10, the actuator piston 32 acting on a presser plate 17 through a ball-bearing 37 and a cam and ball mechanical advantage means. The pistons 32 of both actuators move together, being connected to each other by tie-bars 44. Each mechanical advantage means comprises an axially movable thrust ring 25 having circular cross-sectioned inclined recesses 26 acting radially inwardly on cam balls 24 which in turn act on, to axially separate, circular crosssectioned oppositely-inclined recesses 21, 23 respectively on the presser plate 17 and an axially fixed thrust member 22 reacting on, and being supported by, the stationary housing 34 through a bearing 43. The actuators may be energized and vented, through two ports 38, under the control of a four-way valve. On disengagement the balls 24 move outwardly centrifugally.
Patent GB-810406-A (GB)
Title: High voltage circuit breaker
IPC: H01H33/92
Filed: 1957-03-19
Abstract: 810,406. Liquid-blast switches. PRINCE, D. C. March 19, 1957 [Nov. 20, 1956], No. 8938/57. Class 38 (5). A liquid-blast switch comprises a horizontal insulating housing 11 with a vent 12 opening upwardly from the liquid in the housing, a hollow insulating cylinder 13 within the housing and having an opening in alignment with the vent, a piston 15 slidable in the cylinder, a bulkhead 16 supporting a fixed contact 18, a movable contact 20, a piston rod 17 operable to move the piston towards the bulkhead while disengaging the movable contact from the fixed contact to establish an arc gap, a nozzle 22 leading to the gap from the space between the piston and the bulkhead, and an arc-splitting baffle 23 disposed on the opposite side of the gap from the nozzle, whereby movement of the rod 17 to establish the gap causes the piston 15 to displace liquid through the nozzle to force the arc against the baffle. The Figure shows a portion of a multi-break arrangement in which the piston associated with one " break " carries the moving contact of the adjacent " break." Interconnection between the " breaks is provided by rods 19 which extend. from the fixed contacts 18, the moving contacts 20 being slidable on the rods 19. Specification 743,939 is referred to.
Patent GB-771399-A (GB)
Title: Rotary garage
IPC: E04H6/28
Filed: 1955-03-28
Abstract: 771,399. Mechanical garages. BURANELLI, A. F. March 28,1955, No. 8957/55. Class 78(4). [Also in Group X] In a multi-floor garage the cars are stored inside a circular fireproof wall 39 on at least some of the floors, the other floors comprising living quarters or workshops, so that the occupants can take refuge inside the fireproof walls by staircases 43 &c. The cars are driven in through an entrance 15 on the reception floor 17 and on to one or other of turntables 18, 19, 20 at 120 degrees from which they are driven on to one of three elevators 21 and after elevation to the desired floor they are driven across a bridge sector 38 to appropriate channel rail tracks 33, 34 fixed on a rotor 32 located inside the circular wall 39. To discharge a particular car the rotor 32 is power rotated to bring the car opposite an elevator which then receives and lowers the car to the ground floor from which it is driven off through an exit 16. The rotor 32, Fig. 4, comprises an annulus carrying flanged wheels 58 running on circular floor rails 51 and is provided with doors on its inside to isolate it from the doors in the elevator shafts. Metallic gratings fill up the floor space between the elevator doors and the rotor doors. Operating mechanism may be located in a penthouse on the roof.
Patent GB-528180-A (GB)
Title: Improvements in and relating to all-wing aeroplanes
IPC: B64C35/00
Filed: 1939-03-22
Abstract: 528,180. Aircraft. BURNELLI AIRCRAFT CORPORATION. March 22, 1939, No. 9055. Convention date, March 29, 1938. [Class 4] In an all-wing aeroplane the lateral wing sections B are made detachable from the central section A, which is provided at its forward end with the normal aerial power plant and on its lower surface, with a retractable marine power plant 16, so that, in the event of a forced landing on water, the central section may be separated and maintained afloat. As shown, each of the lateral sections B is provided with four apertured lugs 1 adapted to be passed through slots in the central section A and engaged by simultaneously operable bolts 2...5, which are retracted by means of a sprocket wheel gearing 10, 11, 12, permitting the released sections B to fall away freely. A motor and propeller 18 normally housed in a pocket 17 are projected outwardly and combine with an elevated tail group 14 for propelling and steering the separated central section. Fuel tanks 20 provided in the central section may be readily emptied to increase its buoyancy, while additional fuel and oil tanks 28, 29 may be disposed in the lateral sections B. According to the Specification as open to inspection under Sect. 91, in the case of a flying boat, Fig. 5 (Cancelled), the lateral sections 23 are connected to a central standard 24 erected in the boat portion 26 and are braced by struts 27 which cause the lateral sections when detached to fall clear of the boat portion. This subject-matter does not appear in the Specification as accepted.
Patent GB-304270-A (GB)
Title: Improvement in pistons
IPC: F02F3/00
Filed: 1928-03-26
Abstract: 304,270. Freer, P. M. June 18, 1928, [Convention date]. Pistons; reducing wear.-A piston comprises an aluminium &c. head 10 and a nickel-iron alloy or other hard-metal skirt 16 having a flange 18 which is held against a shoulder on the head by means of a split spring ring 20. The ring 20 has a flange 21 engaging a groove in the head and alternately long and short fingers 22, 23 engaging the bevelled underside of the flange 18. The skirt is maintained concentric to the head by means of pins 25 driven into the head and engaging the skirt. In a modification the pins 25 are dispensed with, and the longer fingers 22 engage slots in the flange 18, rotation of the skirt being prevented by means of projections on the flange 21 engaging depressions in the bottom of its groove. In a further modification the skirt, 29, Fig. 8, is of sheet metal and fingers 31 bent down from the upper end of the skirt engage the bevelled surface 28 of a flange on the head 27.
Patent GB-308090-A (GB)
Title: Improvements relating to loom weighting motions
IPC: D03D49/08
Filed: 1928-03-27
Abstract: 308,090. Rawson, I. March 27, 1928. Letting-off warps. - In devices of the kind comprising chains passing around the ruffles of a warp beam and connected by springs to levers retained in adjusted position by engaging teeth or serrations on a plate or bracket, each lever B is pivoted to a bracket b<2> adjustably secured to the loom frame and is formed at the back with a projecting ridge b adapted to engage one of the teeth a<1> in a bracket A secured to the loom frame.
Patent GB-346959-A (GB)
Title: Improvements in and relating to warp stop motions for looms
IPC: D03D51/20
Filed: 1930-03-24
Abstract: 346,959. Loom warp stop-motions. MASCHINENFABRIK RœTI, VORM. C. HONEGGER, R³ti, Zurich, Switzerland. March 24, 1930, No. 9330. Convention date, March 22, 1929. [Class 142 (i).] As a heald frame 1 rises and falls, a toothed bar 6 is caused to slide in an oppositely toothed channel bar 7 fixed to the heald frame, a pin 8 on the bar 6 fitting through a slot in the bar 7 and being g operated by a slotted bellcrank lever 10 connected to a pull wire 12 having a hook 11 engaged by a spring 14 on a stationary pendent wire 13. When a warp thread breaks, the corresponding heald 22 drops and stops the free movement of the bar 6 and lever 10. Consequently as the heald frame descends, the pull wire is moved downwards against the action of the spring 14 to such an extent that the hook 11 engages a pawl 15 and operates a rod 16 to stop the loom.
Patent GB-673440-A (GB)
Title: Improvements in or relating to the preparation of tetra-alkyl-and/or-aryl-lead compounds
IPC: C07F7/24
Filed: 1950-04-17
Abstract: Tetra alkyl- and/or tetra aryl-lead is prepared by reacting free lead or a lead alloy with an alkyl- and/or aryl-magnesium halide in the presence of one or more alkylating or arylating agents.  By "alkyl- and/or aryl-magnesium halide" is meant one or more compounds RMgX where R is the desired alkyl or aryl radical, and X is chlorine, bromine or iodine.  By "alkylating or arylating agents" is meant compounds of the formula RX where R is an alkyl or aryl radical and X is a negative atom or radical capable of reacting with the magnesium of the alkyl and/or aryl-magnesium halide to form the corresponding magnesium salts. A number of suitable alkyl- and aryl-magnesium halides and alkylating and arylating agents are given.  The reactants may be added simultaneously, or when the lead is used in the form of an alloy with an alkali metal or alkaline earth metal, the said alloy may be reacted with part of the alkylating or arylating agent whereafter the alkyl- or aryl-magnesium halide is added to the reaction.  The alkylating or arylating agents may be employed in a molecular excess.  The preferred reaction temperature is between 45 DEG  and 85 DEG  C.  Specific compounds that may be prepared are tetra methyl, ethyl, propyl and phenyl lead, dimethyldiethyl lead and triethylphenyl lead.  A number of examples are given.
Patent GB-668685-A (GB)
Title: Mechanically operated rowing boat
IPC: A63H23/04
Filed: 1950-04-18
Abstract: 668,685. Propelling boats. HENSEL, P., and HENSEL, E. W. April 18, 1950, No. 9437/50. Class 114. [Also in Group XV] A lever 9, in the form of a figure, is oscillated by the motor 7 and crank 14. It is connected to the pins 18 on the oars, these being supported by rod 22 in rowlocks 19. On the working stroke the rod 23 engages the rowlock face 21, keeping the oar blade vertical, but on the back stroke the oar turns on rod 22 to bring the blade horizontal.
Patent GB-1274345-A (GB)
Title: Improvements in or relating to control means
Inventor: MEASHAM ROBERT GRAHAM
IPC: E05B65/20
Filed: 1970-02-27
Abstract: 1,274,345. Vehicle door fastenings. WILMOT-BREEDEN Ltd. 19 April, 1971 [27 Feb., 1970], No. 9596/70. Heading E2A. Internal locking control means for a vehicle door comprises a mounting 1 adapted to be recessed into or mounted below the window sill of the door, a rockable control member 9 pivotally supported by the mounting for rocking movement between locking and unlocking positions and a lever arm 14 on the control member for connection to a locking control cable 21 or link, the member 9 having two separately identified portions 12, 13 which alternatively project from the mounting to provide a visual identification as to which of said positions the member occupies. The member may be a sub-assembly of two differently coloured mouldings, formed and assembled together to have a cross-halving joint in the region of the pivot axis 11 and consist two mouldings having the same shape. Each portion 12, 13 may have a lever arm 14 to provide for "push-pull" operation.
Patent GB-198507-A (GB)
Title: An improved machine for filling bottles and the like
IPC: B67C3/26
Filed: 1922-04-04
Abstract: 198,507. Gabell, C. D., Gabell, H. W., and Gabell, C. D. April 4. 1922. Bottling. - In a bottling-machine, a crate or box containing empty bottles is moved forward by a slide under the filling position, automatically releasing the slide to return to its initial position, is raised by a lift to engage automatic filling- nozzles, is levered with the lift to its original position, and is pushed on to a receiying table by the following crate or box.as the latter is moved under the filling position. The box 2, Fig. 1, is placed on a table 6 provided with a raised back 7, Fig. 2, and a pawl 13 engaged by a projection 12 on a sliding rack 11 operated by a pinion 9 on a shaft 10 turned by a handle 8. The pawl 13 is lifted by contact with a' surface 14 when the bottles are beneath the filling nozzles A of the tank 1, and the table 6 is moved back to its original position by the action of a weight 15 and cord 15<a>, the box 2 remaining on a lift-table comprising a pair of slides 16 connected to a rack casing 17. Pinions 19 on the shaft 10 gear with the racks 18 and raise them until they reach the tops 17<a> of the casings whereupon the box 2 is raised until the sleeves 5 of a guide-plate 3 placed over the necks of the bottles engage the guidepins 4 and the filling-nozzles enter the bottles. The filling-nozzle, Figs. 3 and 4, comprises a fixed outer tube 21 within which slides an inner tube 22, and a central air-pipe 25 carrying the nozzle-tip 24. A spring 28 is arranged between a flange 27 at the lower end of the tube 22 and a plate 29 beneath the bottom of the tank 1. An extension 23 of the inner tube, normally separated from the latter by a small gap, has a conical face 23<a> and one or two more parts 23b to form a valve for regulating the admission of the milk &c. from the tank 1 to the inner tube 22. The air-pipe 25 passes up through the tank to above the level of the liquid therein, and has a collar 26a engaged by a spring clip 26 resting in a slot in the extension 23. The top of a bottle engages a rubber ring 30 on the flange 27 and raises the inner tube 22 thereby opening the ports 24a and raising the extension 23 to allow liquid to flow into the bottle until it reaches the level of the bottom of the air-pipe 25, whereupon the lift is lowered and the valves 23<a> and ports 24<a> close automatically. Another box having been placed on the sliding table 6 the operation is repeated, the following box on reaching the lift-table forcing the preceeding box with the full bottles on to the table 20.
Patent GB-1111727-A (GB)
Title: Process for the preparation of alkali metal borohydrides
IPC: C07H19/20
Filed: 1966-03-04
Abstract: An alkali metal borohydride is produced by heating, under anhydrous conditions, stoichiometric amounts of an alkali metal hydride, or alkali metal and hydrogen, and an alkali metal tetraborate, as sole reactants.  The reactants are preferably heated in an atmosphere of H2 at 2-10 cm. Hg gauge, with intimate mixing, to 350-450 DEG  C. for Na, 400-410 DEG  C. for K, or 200-300 DEG  C. for Li.  When using alkali metal as reactant, the mixture, e.g. of Na and borax, is initially heated in H2 at 100-340 DEG  C. until no further H2 is absorbed, the corresponding temperatures being 160-270 DEG  C. for K, and 200-265 DEG  C. for Li.  The process may be operated continuously or batchwise. The product is extracted with liquid NH3 or isopropylamine, and the solution evaporated.  By-product metaborate may be converted to tetraborate by adding boric acid, and re-used.
Patent GB-917326-A (GB)
Title: Preparation of synthetic rubber
IPC: C08J3/215
Filed: 1961-03-16
Abstract: A carbon black synthetic rubber master-batch is prepared from a synthetic rubber latex made by aqueous emulsion polymerization using a soap-type emulsifier, by bringing together an acidified aqueous carbon black dispersion and a synthetic rubber latex so as to cause coagulation, and further treating the coagulatum to give a carbon-black-synthetic rubber master batch.  Specified synthetic rubbers are those from butadiene, methyl or chlorobutadiene, piperylene, 2,3-dimethyl butadiene, their mixtures and their mixtures with styrene, alpha-methyl-styrene, p-chlorostyrene, acrylic acid, methyl acrylate or methacrylate, acrylonitrile, methacrylonitrile, methyl vinyl ether and methyl vinyl ketone.  An extender oil may be present and the coagulation may take place by concurrently agitating and comminuting as described in Specification 917,327.
Patent GB-197808-A (GB)
Title: Improvements connected with frames of school desks and the like
IPC: A47B39/04
Filed: 1922-04-05
Abstract: 197,808. Bennet, N. R. April 5, 1922. School desks; frames; slopes.-In school desks of the kind having stamped or pressed metal head frames and arms, the head frame is formed from a blank 1, of the form shown in Fig. 1, to provide horizontal flanges 9, 15, 16, Figs. 2 and 3, a side flange 6, a side flange 3 with its end 4 offset, and a recessed part 11. The top of the desk, to the underside of which the flange 15 is attached, is recessed to form a tenon with the flange 9, and the flange 16 is secured to the usual shelf. The end 4 of the flange 3 forms a part dovetail with the front of the desk, so that when the head frames are arranged in pairs, the flanges 4 constitute a complete dovetail for the front of the desk. The arm 2 which supports the slope is formed from a blank of the form shown in Fig. 5 by setting up the part 24 transversely and forming a rib or flange 28, Fig. 7, to engage a groove 31 in the hinged slope. The arm 21 is pivoted by a pin 23, Fig. 8, to the part 11 of the frame 1, and a projection 30 on the arm is adapted to engage with the flanges 9, 16 when the top is in its normal and raised positions respectively.
Patent GB-514206-A (GB)
Title: Improvements in or relating to fireplaces
IPC: F24B1/193
Filed: 1938-03-31
Abstract: 514,206. Firegrates. 'BIRD, K. H. March 31, 1938, No 9083. [Class 126] A refractory firebottom 1 fitting into the recess between a tiled hearth 9 and the back of the fireplace is made of inverted channel section and so forms an air chamber which communicates with the fire space through apertures 7 and with the front through a sloping passage 6 in the raised front part 3 of the firebottom. Specification 514,205 is referred to.
Patent GB-855685-A (GB)
Title: Improvements in or relating to circuit arrangements for subtracting d.c. voltages
Inventor: CHANDLER DAVID HORACE
IPC: G06G7/14
Filed: 1958-03-27
Abstract: 855,685. Electric analog calculating. 'MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Jan. 26, 1959 [March 27, 1958], No. 9908/58. Class 37 Apparatus for subtracting unidirectional analog voltages comprises a first input terminal returned to earth over an equal resistance potentiometer 4, 5; a second input terminal returned to the output terminal 3 over an equal resistance potentiometer 11, 12; and a vibratory switch armature 9 alternately connecting the centre points of the potentiometers to an A.C. amplifier 13 whose output is capacitance coupled to a vibratory switch armature 15 operated synchronously with 9 to alternately connect the amplified output to a point of fixed potential, e.g. earth and to a resistance capacitance circuit 20, 21 also returned to the fixed potential point; the voltage across the capacitance being applied through D.C. amplifier 22 to the output terminal 3 to represent the difference between the inputs.