baber/WOPTO huggingface dataset:
Patent GB-956381-A (GB)
Title: Improvements in or relating to the manufacture of nitric acid
IPC: B01D3/18
Filed: 1961-01-20
Abstract: In manufacturing nitric acid by absorbing gases containing oxides of nitrogen in a counter-current of water or dilute acid in a column or columns containing spaced baffles or plates, the baffles or plates are arranged so that the spacing between them is less at the gas inlet end of the column or columns than at the exhaust end.  The theoretical spacing of the first two plates is given by the expression  E = 2V/SN(N - 1)  where V is the total volume of the column or columns swept by the gas;  N is the total number of plates in the column or columns; and  S is the cross-sectional area of the, or each, column, and the subsequent spacings increase in the order 2E, 3E, 4E &c.  Due to practical considerations these spacings may be varied.
Patent GB-1114209-A (GB)
Title: Improvements in or relating to sliding-clasp fasteners
IPC: A44B19/10
Filed: 1966-01-19
Abstract: 1,114,209. Sliding clasp fasteners. H. WILCKEN. 19 Jan., 1966 [19 Jan., 1965], No. 2504/66. Heading E2S. [Also in Division B5] A sliding clasp-fastener coil (12), Fig. 1 (not shown), is made by extruding a tube (4) of thermoplastics material about a mandrel (3), cutting the moving tube by means of a knife (5) which rotates about the mandrel axis, and forming coupling elements (10) on the coil by means of a roller or a ram. The portion (4a), Fig. 6 (not shown), is deformed to provide the coupling elements, and grooves 19 may also be provided to facilitate stitching of the coil to a tape 18, Fig. 11. The portion (4b), Fig. 7 (not shown), may be moulded by plates (17), Fig. 9 (not shown), attached to an endless belt (14), each plate having a projection (15) and recess (16) to form a recess 12, Fig. 10 and projection 13 respectively in adjacent portions 4b. This figure shows two such coils intermeshed.
Patent GB-186028-A (GB)
Title: Improvements in evaporators with tubular heating elements
IPC: B01D1/04
Filed: 1922-01-27
Abstract: 186,028. Griscom-Russell Co., (Assignees of Jones, R. C.). Sept. 16, 1921, [Convention date]. Incrustation, removing.-An evaporator for sea water &c. provided with heating tubes is so constructed that scale &c. is automatically detached from the tubes; it may also be so arranged that the tubes are easily withdrawn for cleaning &c. The tubes 7, which are slightly curved, are secured to tube-plates 8, 9, the distance between which is kept constant by tiebolts, so that when the tubes expand on steam being passed through them their curvature increases and any scale &c. cracks and falls off, or the hot tubes may be flushed with cold water to produce a similar effect. The different tubes are curved in different planes, thus diminishing stresses on the bolts.
Patent GB-1421603-A (GB)
Title: Coated carrier particles for use in electrophotographic processes and their preparation
IPC: G03G9/113
Filed: 1973-01-19
Abstract: 1421603 Coated magnetic cores INTERNATIONAL BUSINESS MACHINES CORP 19 Jan 1973 [14 Feb 1972 (2)] 2761/ 73 Heading B2E [Also in Division G2] Ferromagnetic solid cores having a median diameter of 50 to 1000 microns bear a first coating from 0.1 to 5.0 microns thick of polytetrafluorethylene and chromic and phosphoric acids and a second outermost coating from 0.1 to 10 microns thick of sintered polytetrafluorethylene. The cores may be steel beads. Both coatings may be applied in fluidised beds, into which the component materials are introduced with volatile carrier media. After the second coating step th eparticles are heat-treated to sinter the outer coating.
Patent GB-422942-A (GB)
Title: Improvements in or relating to lubricating devices for refrigerating apparatus
IPC: F16N7/38
Filed: 1934-01-26
Abstract: 422,942. Gas compressors. ROGERS, F. H., 181, Queen Victoria Street, London.- (Getriebebau Ges.; 4, Chausseestrasse, Berlin) Jan. 26, 1934, No. 2802. [Class 8 (i)] [See also Groups XXXIV, XIII, and XXVI] A refrigerating compressor is mounted below an electric motor 11 and driven thereby through cranks enclosed in a housing 1 ; the crank shaft is extended downwards to drive an oil pump 6 immersed in an oil reservoir and supplying oil under pressure to the bearings through passages 31, 32. The oil pump may be a gear pump, Fig. 1, or as shown in Fig. 2, may comprise a rotated plate 38 coacting with a base plate 36 formed with a semicircular groove 41 decreasing in depth in the direction of rotation. Alternatively, the hollow pump shaft, Fig. 4, may terminate in oblique tubes 45 formed with scoops.
Patent GB-984985-A (GB)
Title: Tunnel diode-transistor logic circuits
Inventor: LANGLOIS PETER JOHN
IPC: H03K19/10
Filed: 1963-01-23
Abstract: 984,985. Semi-conductor logic; circuits. STANDARD TELEPHONES & CABLES Ltd. Jan. 23, 1963, No. 2878/63. Heading H3T. A semi-conductor logical circuit comprises a transistor T1 in common-emitter configuration and a tunnel diode D1 connected between the base input to the transistor and a point whose potential is such that the emitter-base junction of the transistor has a small forward bias. The arrangement is such that the circuit has a first state in which the transistor is cut off and a second state in which the transistor is bottomed. The NAND unit of Fig. 3 is provided with a bias current I B  and a series of input terminals ABCD, the transistor switching from a non- conducting state to a conducting state if there are two or more inputs on the terminals ABCD. The transistor remains in this state after the removal of inputs <SP>I</SP>IN until the circuit is switched back to its first stage by its base. By increasing the bias current I B  the unit becomes a NOR circuit when the circuit switches from the first state to the second when one or more inputs are present. The circuit of Fig. 3 may be used as a store reading circuit, Fig. 4 (not shown), by applying accurately timed strobe pulses to one of the input terminals and a read-out signal to another of the inputs, the circuit changing from the first state to the second when the input pulses are coincident. In order that the circuit of Fig. 3 may function as a gating circuit without storage, source I B  may be omitted but the inputs I IN  must be of sufficient magnitude to switch the circuit, the circuit returning to its initial state when inputs I IN  are removed. In an alternative embodiment, Fig. 5, the collector of transistor T1 is connected via delay line L4 to the junction of resistors R4, R 5  through which bias current I B  flows. With the transistor cut off the diode is in its high current low voltage state but when a pulse I IN  occurs on one of the inputs the tunnel diode switches to its high voltage-low current state, the transistor bottoms and the voltage at its collector falls. This fall in voltage is transmitted via the delay line LD and resistor R5 to the base input resulting in I B  becoming zero so that only I IN  is present. When I IN  is removed the diode switches back to its low voltage state and switches the transistor off, the output of the circuit thus following the input.
Patent GB-591238-A (GB)
Title: Improvements in electric control systems for winding and like mechanisms
IPC: B66B1/46
Filed: 1945-02-05
Abstract: 591,238. Master control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd., and PETCH, T. H. Feb. 5, 1945, No. 2889. [Class 38(iii)] [Also in Group XXXV] An electric motor or other prime mover, particularly one employed for a winding gear or hoist, has a master controller MC and an auxiliary controller AC automatically maintaining the speed of the prime mover at that set by the master controller, and actuated by an electric motor AM fed from an auxiliary generator AG, the excitation of which is responsive to the armature current of a D.C. motor M coupled to the prime mover. The auxiliary generator is preferably an amplidyne of the kind described in Specification 539,837, [Group XXXV] the output of which is controlled by a field winding 10 excited by a shunt 9 in the armature circuit of the motor M only when its potential difference exceeds the voltage across a potentiometer 11, or in a modification differs from a fixed but reversible voltage. Motor M is a constant field separately excited machine and may be supplied by a constant speed generator G the output of which is controlled by a field resistance 5 varied by the master controller. Should the load conditions on the prime mover vary such that the torque and hence the armature current of motor M vary, the amplidyne causes motor M to operate correcting means. As shown in the Figure, this comprises a resistance LC in rotor circuit of induction motor IM constituting the prime mover, and also a dynamic braking contactor D1 which, on negative loads, introduces braking of the kind described in Specification 516,666. A control 22, 23 operative according to the rate of change of armature current is also applied to the amplidyne so that the system responds to the rate of change of position of the master control element. Overload and anti-hunt devices may be provided on the amplidyne, and also provision for returning the auxiliary controller to neutral, as described in Specification 588,209. If the prime mover is other than an electric motor the auxiliary controller AC (in conjunction with the controller MC) would control the direction of rotation, throttle opening, and braking; the last control might comprise an auxiliary generator driven by the prime mover and loaded by resistance.
Patent GB-1206973-A (GB)
Title: Improved catalyst compositions and supports
Inventor: HARE NORMAN
IPC: B01J23/755
Filed: 1967-01-19
Abstract: 1,206,973. Refractory catalysts. NORTH WESTERN GAS BOARD. 9 Jan., 1968 [19 Jan., 1967], No. 2899/67. Heading B1E. In a process for making refractory catalysts an hydraulic cement, water, catalytically active material and refractory material are mixed to form a catalyst composition which is soaked thoroughly with water when the hydraulic cement sets and thereafter dried. An example describes the preparation of a NiO containing catalyst which was attrition resistant.
Patent GB-720657-A (GB)
Title: Universal circular saw
IPC: B27B5/24
Filed: 1953-02-02
Abstract: 720,657. Sawing. FJELDE, I., and JOHANSEN, S. Feb. 2, 1953 [Feb. 7, 1952], No. 2931/53. Class 145. A circular saw 5 and its driving motor 4 are adjustable vertically and also angularly in both the horizontal and vertical planes by being hinged about a horizontal axis 6 on a cylinder 3 which is slidably and rotatably fitted within a pillar 2 mounted on a built-up tube framework 1. The top of the pillar 2 is split so that it can be clamped rigidly on the cylinder 3 by bolts 9 passing through lugs 8a or the cylinder 3 can be clamped against rotation while allowing vertical adjustment by bolts 12 and a split ring 11 having a pin engaging a slot 14 in the cylinder 3. Adjustment about the pivot 6 is locked by a bolt 24a projecting through a graduated slot 23 on plates 22 secured to the motor mounting plate 4a. The cylinder 3 is balanced by a cord 16a extending from the mounting plate 4a to the foot of a rod 17 attached to the top of the cylinder and running over a pulley 19 on an upwardly-extending rod 16 secured to the frame and over a pulley 18 on a spring 15. A hole 10 is provided for a lifting handle. The saw blade projects through a rectangular hole 27a in a disc 27 which is flush with a removable table 21 and is rotatable with the cylinder 3; the hole 27a is closed by plates 28 placed so that a saw slot 26a is provided in the position required by the saw adjustment. A further hole 29a, normally closed by a plate 29, accommodates the saw shaft when the motor is in a vertical position, in which case the saw may be replaced by a milling tool. A guide 25 is slidable on a rod 26 and a lower table 30 and guide 31 are provided for use when grooving the ends of boards.
Patent GB-109740-A (GB)
Title: Improvements in and relating to Apparatus for use in the Construction of Vehicle Wheels.
Inventor: CALHOUN HENRY CLAY
IPC: B60B31/00
Filed: 1917-03-01
Abstract: 109,740. Calhoun, H. C. March 1, 1917. Disk-wheels; building-apparatus. - Relates to apparatus for use in assembling wheels of the kind described in Specification 105,529 which comprises a stamped metal disk 22 secured to a hubflange 20, and a similar disk 23 secured between threaded collars 33, 37 adjustable on the hub for the purpose of tensioning the wheel, the disk peripheries forming a setting for a detachable rim. The apparatus comprises a boss 43 fitted with a spindle 42 adapted to carry the wheel hub 10, arms 44 supporting a rim 46 by means of which and clamps 47 the disks are held whilst being connected at 31. For operating the sleeve 33, a two-part sprocket 59 detachably clamped thereon is turned by a pinion 58 keyed on a spindle 55. The latter is journaled at 56 on the brakedrum 19 (or at 64 in the boss 43) and passes through a block 53 detachably fitted in a thrust block 48 screwed and keyed on the hub 10. The collar or nut 37 having been adjusted to the final position it is to occupy in use, the sleeve 33 is travelled along the hub to brings the flange 36 of the disk 23 into the position shown, in which the parts are locked by bolts 39.
Patent GB-557909-A (GB)
Title: Improvements in or relating to the dyeing of cellulose or cellulose derivative textile materials
IPC: D06P5/22
Filed: 1942-03-09
Abstract: 557,909. Dyeing textiles. COURTAULDS, Ltd., CAMERON, W. G., and MORTON, T. H. March 9, 1942, No. 3054. [Classes 2 (iii) and 15 (ii)] The affinity of cellulose and cellulose derivative textile materials for acid dyes is improved by incorporating therein a reaction product of an aliphatic aldehyde with a compound of the formula X-NH-C(NH)-NYZ, wherein X represents H or H 2 N-C(NH)-, Y represents an alkyl, aralkyl or heterocyclic radicle, which may be substituted, and Z represents H or an alkyl, aralkyl or heterocyclic radicle or Y and Z together constitute a chain forming with the N-atom a heterocyclic ring. Specified aldehydes are formaldehyde and aldol and specified compounds for condensation therewith are those obtainable by reaction of the appropriate primary or secondary amine, e.g. mono- or diethanolamine, ethylenediamine, piperidine, N- #-hydroxyethylethylenediamine or triethylenetetramine, with cyanamide or dicyandiamide. In examples (1) a fabric woven from regenerated cellulose staple fibre is impregnated with an aqueous solution containing ethylenedibiguanide and formaldehyde with addition of sodium hydroxide to adjust the pH to 9.0, squeezed, dried at 60‹C. and heated for 15 minutes at 140‹C.; (2) a similar fabric is impregnated with an aqueous solution containing monoethanol-biguanide and formaldehyde with addition of ammonium chloride to adjust the pH to 3.5, squeezed, dried at 60‹C. and heated for 20 minutes at 140‹C.; (3) a similar fabric is impregnated with an aqueous solution containing pentamethylenebiguanide and formaldehyde with addition of hydrochloric acid to adjust the pH to 3.5, squeezed, dried and heated for 15 minutes at 140‹C.; (4) a woven fabric of viscose threads is impregnated with an aqueous solution containing ethylene-dibiguanide and aldol with addition of sodium hydroxide to adjust the pH to 9.0, squeezed, dried at 60‹C. and heated for 10 minutes at 145‹C.; (5) a fabric as in (1) is impregnated with an aqueous solution containing a product obtained by heating dicyandiamide (2 mols.) with ethylenediamine hydrochloride at 250‹C. and formaldehyde, with addition of sodium hydroxide to adjust the pH to 9.5, squeezed, dried and heated for 15 minutes at 140‹C.; (6) a woven fabric of viscose threads is impregnated with an aqueous solution containing the reaction product from cyanamide (2 mols.) and ethylenediamine hydrochloride (1 mol.), and formaldehyde, with addition of hydrochloric acid to adjust the pH to 3.5, squeezed, dried and heated for 20 minutes at 140‹C. Specification 509,408 is referred to.
Patent GB-1205961-A (GB)
Title: Improvements in hand tools
Inventor: QUITMANN CLIVE ERNEST OTTO
IPC: A47L13/08
Filed: 1967-01-20
Abstract: 1,205,961. Cutting and scraping appliances. HOLLANDS & BLAIR Ltd. 16 Jan., 1968 [20 Jan., 1967], No. 3056/67. Heading B4B. A blade for a hand tool of the kind in which a handle is in two half shells which are bolted together to replaceably secure a cutting blade with an end protruding and the other end located between the shells, has a scraping, in lieu of a cutting formation. The scraper edge 10a is wider than the body 11 and may be arranged at an angle to the body and the handle axis (not shown). The edge may have a castellated formation, Fig. 3 (not shown).
Patent GB-197006-A (GB)
Title: Improvements in or relating to electrical and mechanical connections or joints
IPC: H01R4/38
Filed: 1922-02-02
Abstract: 197,006. British Electric Transformer Co., Ltd., and Mount, S. C. Feb. 2, 1922. Clips, band.-An electrical or mechanical connection or joint between two members is effected by a clamping member a adapted to be passed sideways over one of them b to form therewith a space c to receive the other d, and to be tightened about the assembled members by fastening means e which force its end portions together. The clamping member is preferably of springy material such as sheet brass, and a portion thereof is adapted to conform to one of the members b, the end of the other member d being prepared for insertion into the space c as by compressing it in the jaws of heavy pliers. The co-efficient of expansion of the clamping member may be less than that of the members to be joined, and the fastening means are preferably subject to a bending pressure such as to lock them automatically when tightened up.
Patent GB-211146-A (GB)
IPC: F02B19/04
Filed: 1924-02-07
Abstract: 211,146. Schneider, H. Feb. 12, 1923, [Convention date]. Cylinders receiving liquid fuel.-In an engine having a projection on the piston which enters a restricted portion 10 of the cylinder at the end of the compression stroke, clearance between the projection and the restriction is reduced to a minimum, and recesses 4 are cut in the piston or in the cylinder walls to permit the passage of air. The fuel is injected by means of a central nozzle 12 in a series of jets each of which is directed into a body of air issuing through one of the passages 4. In alternative constructions the fuel may be injected through nozzles each of which is situated directly above one of the passages 4. Scavenging air is admitted through a cylindrical valve 11.
Patent GB-197015-A (GB)
Title: Improvements in or relating to liquid hydrocarbon burners
IPC: F23D11/14
Filed: 1922-02-03
Abstract: 197,015. Macdonald, F. R., Pickersgill, W. R. A., Johnson, F. S. Lovick-, and Scarab Oil Burning Co., Ltd. Feb. 3, 1922. Air and steam pressure sprayers. -A spray burner of the type in which the atomizing agent impinges at an angle on the liquid fuel comprises a casing a containing a twopart nozzle unit b having hollow bosses c, d secured between a socket 2 screwing in the casing a and connected to the fuel supply pipe 3 and the. air or steam supply tube 6. The tube is pressed against the boss d by a sleeve 4 screwing in the casing. The fuel entering the boss c passes to a well or trough f in the upper part e of the nozzle unit and then flows down a ribbed inclined weir h having its lower end formed with teeth k. The inclined surface of the weir consists of a series of planes of progressively increasing inclinations. A cover y is provided for the weir. The lower part n of the nozzle unit is secured to a boss q on the upper part of a nut s and stud r. Air or steam entering by the boss d passes into a steam chamber o in the lower part n and issues through an outle.t v to impinge on the fuel falling from the teeth k. The thickness of packing u interposed between the two parts of the nozzle unit determines the size of the steam outlet v. The nozzle unit may be adjusted angularly on the bosses c, d as pivots by means of an adjustable screw w in the casing. In a modification the steam nozzle is integral with the main part of the nozzle unit and the oil nozzle part or weir is attached thereto.
Patent GB-830826-A (GB)
Title: Improvements in or relating to electric lighting fittings
Inventor: PHILLIPS LEONARD ERNEST ARTHUR
IPC: F21V17/00
Filed: 1957-01-30
Abstract: 830,826. Latch fastenings. GENERAL ELECTRIC CO. Ltd. Jan. 30, 1958 [Jan. 30, 1957], No. 3288/57. Class 44 An electric lighting fitting of the kind having a detachable light transmissive panel covering an opening which is intended to be lowermost in use of the fitting and which is hinged to one side of the opening so that the panel can be swung downwards to give access to the interior of the fitting includes at least one latch for the panel in which an L-shaped lever 7 working on a horizontal pivot 8 attached to a side of the panel away from the hinge line is arranged on closing the panel to engage a fixed pin 6 attached to the side of the opening, the lever having at the end of one arm a hook 9 with a cam head arranged to ride over the fixed pin so as to enable the hook to pass over the pin and close the latch under a spring or gravity bias and the other arm of the lever extending over an aperture 12 in the panel so that the latch can be released by an upward pressure on the arm rotating the lever hook clear of the fixed pin. As shown, the lever is biased by a spring 11.
Patent GB-840624-A (GB)
Title: Improvements relating to gas-turbine engines
Inventor: WHEELER MARCUS ALAN
IPC: F02C7/141
Filed: 1957-01-30
Abstract: 840,624. Gas turbines. ROLLS-ROYCE Ltd. April 2, 1958 [Jan. 30, 1957], No. 3347/57. Class 110 (3). [Also in Group XXVIII] In a gas turbine engine means, operative only during starting operation of the engine, are provided for injecting a water-containing liquid coolant into the engine upstream of the turbine. The coolant is delivered from a cylinder 23 by a spring-loaded piston 24 through a non-return valve 26 to a nozzle 19, and the piston is released by a latch 35 actuated by a solenoid 38 joined to the circuit of the starting motor 13. The cylinder 23 is charged from a storage tank 20 during normal running of the engine, the pressure of air delivered by a pipeline 31 from the compressor 10 being applied to a piston 29 to reload the spring 30 and re-engage. the latch. The coolant may be water alone, water methanol mixtures, or water with a wetting-agent.