baber/WOPTO huggingface dataset:
Patent GB-362772-A (GB)
Title: Improvements in steam boiler
IPC: F22B37/22
Filed: 1931-02-14
Abstract: 362,772. Water-tube steam boilers. STIRLING BOILER CO., Ltd., 32, Farring- don Street, London.-(Babcock & Wilcox Co. ; 85, Liberty Street, New York, U.S.A.) Feb. 14, 1931, No. 4723. [Class 123 (ii).] In a Stirling type boiler a horizontal header 17 which may be spring supported is located outside of the upper rear part of the furnace and a row 18 of forwardly inclined tubes extends from it in front of the front bank 4 portions 19<1> of some of these tubes being extended forwardly more than others. A slag screen is thus provided by the preferably staggered portions 19, 19<1>. The lower portion of the tubes 18 is lined to provide a roof or wall protecting the mud drum 3. A link mechanism 231 is provided between the drum and the tubes 18 below a baffle 23 to form a flexible support for the tubes. A gas seal 28 is also provided between the lower parts of the tubes 18 and the upper ends of rear wall tubes 11. In a modification the tubes 18 are connected at their upper end to an external header connected to the boiler steam space.
Patent GB-831049-A (GB)
Title: Improvements in and relating to polyacrylonitrile solutions
Inventor: SCHMIDT WILHELM GEORG
IPC: C08F20/44
Filed: 1957-02-12
Abstract: In a modification of the process described in the parent Specification, acrylonitrile, with or without up to 20% of other copolymerizable compounds such as styrene, itaconic acid, methyl acrylate, vinyl acetate or vinyl pyridine, is polymerized in a concentrated aqueous or aqueous/alcoholic solution of an inorganic thiocyanate in the presence of a non-oxidizing catalyst forming free radicals and a reducing agent of the formula R-NH-NH-R1 where R and R1 are alkyl groups which may be substituted.  The reducing agent may be diisopropyl hydrazine or hydrazobisisobutyric acid and is preferably used in a proportion of 0.1 to 1 mol. per cent based on total monomer.  In the examples a 50% aqueous solution of sodium thiocyanate is used as the polymerization medium, azobisisobutyronitrile and diazoamino tetrazole are used as catalysts and copolymers of acrylonitrile, methyl acrylate and itaconic acid are made.  The excess monomers may be flash distilled and the process may be made continuous.  The acrylonitrile polymer solutions obtained may be spun directly and articles such as fibres, filaments, ribbons or films may be formed.  Specification 824,361 also is referred to.
Patent GB-397172-A (GB)
Title: A removable holder for spoons and the like for use in connection with kitchen rangesand the like
IPC: A47J47/16
Filed: 1932-02-18
Abstract: 397,172. Spoon &c. holders ; brackets. RUSSELL, E., Brent Knoll, Duffield Road, Derby. Feb. 18, 1932, No. 4799. [Classes 52 (v) and 128.] A holder for spoons and like cutlery for use with kitchen ranges and other cooking-appliances comprises a dish-like receptacle 3 adapted to be removably attached to the end plate or other portion of the range 6 by means of lugs or projections 5 on the receptacle which engage slots 7 in the range. The receptacle 3 is of elongated oval shape and has recesses 4 in its rim at one end to receive the spoons. The lugs 5 have their ends 5a upturned to engage the face of the plate 6. According to the Provisional Specification the lugs 5 may be formed on the range &c.
Patent GB-1065630-A (GB)
Title: Animal cage filter cover
IPC: A01K1/03
Filed: 1966-02-03
Abstract: 1,065,630. Animal cages. BECTON DICKINSON & CO. Feb. 3, 1966 [June 3, 1965], No. 4828/66. Heading A1M. [Also in Division B1] A cage for laboratory mice comprises a tray 20 with a grid 22, fitted with a disposable cover 36 of porous fibrous material which permits ventilation but excludes germs. As shown, the cover is of sheet material and truncated pyramidal in shape, with a handle 52 and an inspection window 50. It may comprise a mixture of glass and polyvinyl chloride fibres, optionally with nylon, hemp or cellulose fibres added. The thermoplastic fibres facilitate welding the sheet to form the cover. Alternatively a sheet of glass fibre may be saturated in, coated with or laminated to a thermoplastic resin to serve the same purpose. In Fig. 1 cover 36 is made of five pieces, each having edges turned over for reinforcement. In Figs. 9-11 (not shown) the cover is made from a single sheet, on to which a grid of reinforcing material 140 is first applied by silk screen printing. Figs. 12-16 (not shown) illustrate a foldable cover with one side consisting of a transparent P.V.C. window and another of impervious P.V.C. coated paper.
Patent GB-306143-A (GB)
Title: Improvements relating to gas producers
IPC: C10J3/46
Filed: 1929-02-14
Abstract: 306,143. Bamag-Meguin Akt.-Ges., and Heller, O. Feb. 17, 1928, [Convention date]. Producers for generating water gas or a mixture of coal gas and water gas from pulverized fuel by means of a circulating current of highlyheated steam and gas have a gas-heating chamber or accumulator 11 communicating with a reaction chamber 8 through a passage 10 ending in one or more upwardly-directed nozzles 7 located in a refractory beam extending across the chamber. During the heating stage gas from a producer 12 is passed through a preheater 14 to a burner 15 to which air is supplied by a fan 16 through the preheater and a pipe 17. Combustion products from the accumulator pass to an exhaust flue 19 through a waste-heat boiler 18 and'. the preheater 14. For the gasification stage the gas and air valves 20, 21 and dampers 22, 23 are closed and the fuel is fed by a small volume of primary gas under pressure (water gas or superheated steam) through a pipe 6 to the nozzles 7. The gas circulation is maintained by a steam injector 24, gas passing through the chamber 11. and mixing as a secondary current at about 1200‹ C. in the nozzles 7 with the primary gas and fuel. Gas and ash are discharged through one or more outlets 26 and a pipe 27 into a dust separator 28, newly-formed gas passing through a pipe 30 and scrubber 32 to a holder 33. A fusible plug orthermostat may actuate means to cut off the injector steam supply and the fuel distributor motor 3 on the dust separator reaching an excessive temperature. In a modification, the gases are discharged from the reaction chamber into the conical lower chamber of a waste-heat boiler which serves as a preliminary dust separator and also houses a steam superheater. Gases discharged from the heating chamber 11 may be utilized for drying the fuel before being ground.
Patent GB-266716-A (GB)
IPC: H04M1/02
Filed: 1927-02-22
Abstract: 266,716. Siemens & Halske Akt.- Ges. Feb. 23, 1926, [Convention date]. Desk and table sets.-The base c of a desk or table telephone set contains the bell a and other components, such as a condenser, induction coil. and terminal board and has a cover g which supports an impulse transmitter b. The cradle h of the telephone instrument operates the contacts i by means of a rod l slidably mounted in a boss n formed on the cover. In a modification, the casing c and cover g are formed as a single unit. Additional switches, e.g. an earthing key, may be provided on the base.
Patent GB-754664-A (GB)
Title: Improvements relating to electric circuit arrangements for producing pulses
Inventor: MELVILLE WILLIAM SIMM
IPC: H03K3/45
Filed: 1954-02-19
Abstract: 754,664. Converting. BRITISH THOMSONHOUSTON CO., Ltd. Feb. 18, 1955 [Feb. 19, 1954], No. 5010/54. Class 38 (2). Unidirectional pulses are produced in a load S from an A.C. supply which in alternate half cycles charges a capacitor C through a rectifier D and saturable transformer T until the transformer saturates when the capacitor C discharges through the transformer secondary winding to impulse the load S. During the other half cycles of supply, reverse current is blocked by rectifier D, across which is connected a resistor R of such value that the current through it is sufficient to reverse the transformer flux in readiness for the next pulsing halfcycle. In the input circuit is an inductor L of such value that it resonates with C. In a modification capacitor C is replaced by two capacitors in series, across one of which is connected the load in series with a saturable inductor, Fig. 2 (not shown). The transformer T may be omitted, capacitor C being connected across the supply circuit, the load in series with a saturable reactor being connected in parallel with the capacitor, Fig. 2 (not shown). The circuit may incorporate cascade arrangements of saturable reactors. Specifications 666,574 and 666,575 are referred to.
Patent GB-461388-A (GB)
Title: Improvements in screw presses for pressing out liquid
IPC: B30B9/26
Filed: 1936-02-19
Abstract: 461,388. Presses for separating liquids from solids. AKTIESELSKAP KAMPENS MEK. VERKSTED. Feb. 19, 1936, No. 5027. Convention date, Feb. 23, 1935. [Class 46] Before material is introduced into the main pressing portion 1 of a screw extrusion press, a portion of its liquid content is expressed in an earlier portion 3, the drainage apertures 1<1> of which are controlled by a plate or plates 7 which can be moved longitudinally to regulate the size or number of the exposed apertures and consequently the amount of liquid expressed in the portion 3. The plates 7 may slide in guides inside or outside the casing. The arrangement can be applied to presses having two or more screws with intermeshing threads.
Patent GB-876920-A (GB)
Title: Improvements relating to the heat treatment of saw teeth
IPC: B23D63/00
Filed: 1957-02-15
Abstract: 876,920. Hardening saw teeth. GRANT, H. Feb. 17, 1958 [Feb. 15, 1957]. No. 5158/57. Class 72 Apparatus for hardening and tempering saw teeth comprises a support for a saw, a holder for an electrode arranged to engage the tips of the teeth, an electric circuit in which the electrode and the teeth are connectible, mechanism to impart step by step movement to the saw to bring the teeth successively to a heating station where the electrode is located, the mechanism operating in timed relationship with means acting on the electrode holder to bring the electrode into contact with, and disengage it from, the tips of the teeth sucessively positioned at the heating station. As shown, a vertical slide rail 11 is mounted on the front of a casing 10 to accommodate a band saw support 13 and a rotary saw support 14, both supports being adjustable for height on the rails. The saw blade 27 is arranged to pass between a holder 30 and a guide 29, a nut 39 being adjustable to hold the saw firmly in position. A feed arm 50 supported on a fulcrum 51 carried on a lever 52 has an open ended slot in which is provided an adjustable block 54 having a feed finger 55 to engage the saw teeth. The lever 52 carries a cam follower 60 operated on by a cam 61 against a return spring 65, one rotation of the cam moving the saw blade by one tooth. The lever is guided by a slotted shackle 72 carrying an indicator 79 to show the amount of movement of the lever. An electrode assembly E is mounted on a rod 82 forming part of a rocker lever 83 pivoted at 84, the other end of the rocker lever being operated by a rod 87, lever 100, and a cam 107. The movements of the saw blade and the electrode assembly are therefore in timed relationship controlled by the cams 61 and 107 which are mounted on one shaft. The heat generated in a small part of the tooth is dissipated through the body of the blade and the tip of the tooth hardened. In a modification (Fig. 9, not shown) the electrode assembly is associated with a grinding head in such a manner that when the grinding operation is completed, the grinding head is raised and the electrode assembly lowered to harden the ground tooth.
Patent GB-756760-A (GB)
Title: Precipitator flashover control through current and voltage response
IPC: B03C3/66
Filed: 1954-02-22
Abstract: 756,760. Protective arrangements for supply systems for electrical precipitators. AIR PREHEATER CORPORATION. Feb. 22, 1954 [May 4, 1953], No. 5177/54. Class 38 (4). Simultaneous conditions of low voltage and high current in a rectifier system 12, 14 supplying a precipitator 19-indicative of flashovercause conduction of a normally non-conducting valve 42 to operate a relay 40 which effects a further voltage reduction to an arc extinction value by de-energizing the D.C. excitation windings 20-22 of saturable reactors 16-18 in series with the A.C. supply lines 10 and simultaneously energizing the D.C. windings 30-32 of further saturable reactors 25-27 which shunt the primary windings of the rectifier transformer 12. On extinction of the arc, the relay resets and restores the normal running conditions, in which the reactors 16-18 present low impedance and the reactors 25-27 high impedance. Valve 42 is normally held off by grid bias obtained from a potentiometer 50 across the rectifier output terminals, whilst the anode circuit of the valve may, or may not, be completed at contacts 46A under normal operating conditions of the precipitator, according to the setting of a tapping B on a potentiometer 44, which carries the current of the precipitator and from which the coil 46 of a relay controlling the contacts 46A is energized. However, under the heavy current conditions accompanying flashover this relay is in its operated condition and is locked in over holding contacts 46B, so that the anode circuit of valve 42 is closed and the low hold-off bias now obtaining allows the valve to conduct and operate relay 40. A stepping switch 57 is operated by contacts 40C of relay 40 each time a flash-over occurs and, after the occurrence of a given number in any one duty cycle of the precipitator, successively energizes relays 60, 70, 71 to effect progressive reduction of working voltage by switching resistance into the excitation circuit of the series reactors 16-18. The stepping switch is reset at the end of each duty cycle by a coil 85 energized over a cam switch 82 operated by the cleaning mechanism.
Patent GB-896159-A (GB)
Title: Improvements in or relating to descaling compositions
Inventor: PAUL ERNEST GEORGE
IPC: C23G1/02
Filed: 1959-02-16
Abstract: A composition, suitable after dissolution in water for descaling household utensils, pipes or industrial plant, comprises, by weight, 5-25 parts of one or more solid acids and 1 part of one or more solid inhibitors.  Specified acids are sulphamic, citric, tartaric, malic, maleic, malonic, fumaric and glycollic acids.  Specified inhibitors are ethylene diamine triacetic acid, ethylene diamine tetraacetic acid, hexamine, glycine, size, gelatine and isingiass.  The composition may also comprise up to 1% by weight of a wetting agent, e.g. of the alkyl sulphonate type.  Metals which may be descaled include aluminium, iron, steel, chromium and tin-plated copper.
Patent GB-510469-A (GB)
Title: Improved automatic draught regulator for controlling combustion in water heating boilers
IPC: F23N3/04
Filed: 1938-02-21
Abstract: 510,469. Controlling combustion in boiler furnaces. SATCHWELL, L. Feb. 21, 1938, No. 5474. [Class 51 (i)] An automatic regulator for controlling the air inlet door 12 of a boiler furnace comprises a heat sensitive member 1 located vertically in the boiler and having a rod 5 connected to one end of a lever 6 pivoted at 8 and located in a protecting casing 10 which overhangs the boiler wall. The other end of the lever 6 is connected to a rod 13 which is free to rotate on the lever and passes through a protecting tube 14. The lower end of the rod 13 is connected to the air inlet door 12 by a link 15 pivoted to the rod 13 and air inlet door. The link 15 is disposed substantially parallel with the hinges of a cleaning door on which the air inlet door 12 is mounted. The fulcrum 8 of the lever 6 is vertically adjustable.
Patent GB-807266-A (GB)
Title: Improvements in or relating to the arrangement of opening compartments intended to house electrical apparatus mounted on movable frames
IPC: H02B1/36
Filed: 1955-02-23
Abstract: 807,266. Bolts; key locks. TELEMECANIQUE ELECTRIQUE. Feb. 23, 1955 [April 16, 1954], No. 5500/55. Class 44 [Also in Group XXXVII] In a switchgear structure (see Group XXXVII) having a withdrawable carriage 1 in a compartment with a door 27, the initial withdrawal of the carriage is effected by a rotatable handle 17 on the door through a part helical member which imparts a longitudinal motion to the carriage when the handle is turned, a door bolt 25 being withdrawn during the last part of the rotation of the handle. In the arrangement shown, when the handle 17 is turned in the direction of the arrow F, a fork composed of members 13, 14 embraces a rod 12 secured to the front of the carriage 1 and as the fork moves along the part helical portion 12a of the rod it partly withdraws the carriage. As the handle approaches the end of its travel, a pin 21 on a member 19 cooperates with cam surfaces on a member 31 secured to the bolt 25 and the bolt is withdrawn against the bias of a spring 29. At the end of the movement of the handle, the fork is disengaged from the rod 12 and on opening the door 27, the handle and bolt are locked against return motion by a tooth 19a on the member 19 abutting a tooth 37 on a lever 32, the lever being moved into a position in which this abutment can occur by a spring 35 when the end 32a of the lever is movd away from the door jam. On the withdrawal of the bolt, a latch member 42 is moved into a position behind a member 88 (now at position 88a, Fig. 5) to prevent the carriage being pushed back when the door is open. To open the door 27 without withdrawing the carriage, a member 48 is turned by a key in a barrel lock to withdraw the bolt 25. In this case, the latch member 42 is moved in front of a member 89 to prevent the withdrawal of the carriage when the door is opened. In a modification, Fig. 6 (not shown), the withdrawal of the carriage may be effected by the axial movement of the shaft on which the handle is fixed, the axial movement being caused by a pin fixed to the shaft moving along a part helical slot in a fixed bearing. The arrangement of the various locking members is generally that described above.
Patent GB-420514-A (GB)
Title: Improvements in processes for treating steel, alloy steel, copper or brass before cold working
IPC: C21D8/00
Filed: 1933-02-23
Abstract: Steel, alloy steel, copper, or brass are treated before cold working by rapidly cooling them from a high temperature which in the case of steel and alloy steel lies between 300 DEG  C. and the Ar1 point and in the case of copper or brass between 400 and 700 DEG  C.  The steel articles may be annealed and slowly cooled down to a temperature between 300 DEG  C. and the Ar1 point and then rapidly cooled from that temperature.  In an example, if a rod of steel containing 0,45 per cent of carbon and a diameter of 80 mm. is to be reduced to a diameter of 78,5 mm. it is heated to 650 DEG  C. and quenched in oil before drawing.  Reference has been directed by the Comptroller to Specifications 390,999 (as open to inspection under Sect. 91 of the Acts), and 397,831.
Patent GB-115065-A (GB)
Title: Improvements relating to Screening Plant for Dealing with Metalliferous Ores and other Substances.
Inventor: POCHIN ROBERT FRANCIS
IPC: B07B1/00
Filed: 1917-04-20
Abstract: 115,065. Pochin, R. F., and Pochin, H. S. April 20, 1917. Screening-apparatus on self-propelled vehicles.- Consists in a portable self-propelled screening and conveying plant for heating metalliferous ores &c. As shown in Figs. 1, 1<A>, and 1<B>, which, arranged end to end, show the complete apparatus, the plant comprises a feed hopper 1, a rotary screen 10, delivery shoots 14, and a conveyer 54, all mounted upon a frame 52 fitted with two sets of ground wheels 32, 34 arranged at right-angles to one another so that the device can be traversed in one direction or the other, as desired. The propulsion of the vehicle and the driving of the apparatus are effected by an oil engine or other motor arranged to drive a shaft 23 from which the motion is transmitted by belt &c. gearing to the ground wheels, the screen, and the conveyer. The wheels 32, 34 are arranged to run on rail sections and, when it is desired to move the apparatus on to an adjoining strip of land, it is raised by means of jacks 54 so that the rails can be moved to new positions ready to receive the wheels again. Reference has been directed by the Comptroller to Specifications 11500/08 and 29541/13, [Class 6 (iii), Harvesting-appliances].
Patent GB-526807-A (GB)
Title: Improvements in or relating to suspension systems for vehicles
IPC: F16F9/06
Filed: 1939-02-20
Abstract: 526,807. Shock-absorbers. NEWTON, N. B. Feb. 20, 1939, No. 5550. [Class 108 (iii)] A dashpot wherein the load is supported by an air or like cushion 12 above a non-compressible fluid 11 having restricted displacement through a partition 17 to prevent knocking on the inward stroke of the piston 31 due to delay action in the return of the fluid by the air cushion, an auxiliary vessel or space containing fluid is provided to maintain full fluid connection between the cushion and the piston. On the upward stroke of the piston, the fluid flows freely past a non-return valve 27 and through apertures 26 in the partition, and on the downward stroke, the fluid returns through a central restricted passage 20, which is adjustable by a screw 23. The piston contains a spring-pressed auxiliary piston 43 and a non- return valve 36 with a restricted return passage 39. Upon a rapid outward movement of the piston, the formation of a vacuum between piston and the partition is prevented by the free entrance of fluid forced out by the auxiliary piston past the non-return valve 36. The auxiliary piston may be arranged in a reservoir attached to the dashpot and communicating with the space between the main piston the partition 17, and in place of a spring-pressed piston, the fluid may be forced out of the reservoir by the pressure of the compressed air above the fluid in the reservoir.
Patent GB-675281-A (GB)
Title: Improvements in and relating to carrying handles for portable containers
IPC: B44D3/12
Filed: 1949-03-01
Abstract: 675,281. Bail hollow-ware handles. SMITH, E. W. June 1, 1950 [March 1, 1949], No. 5587/49. Class 66 The ends of a wire bail handle of a paint can 10 &c. pass through off-centre holes 38 in channel sockets 12 and are bent inwardly and downwardly so that the handle may swing down to the chain-line position on the one side of the can, but only a little way past the vertical on the other side when the end 24 comes against the side of the channel. Alternatively there may be two holes 38, or a slot, so that the same socket can be used on either side of the can.