baber/WOPTO huggingface dataset:
Patent GB-554223-A (GB)
Title: Apparatus for generating and superheating steam
IPC: F22G7/14
Filed: 1942-11-16
Abstract: 554,223. Water-tube steam boilers. FOSTER WHEELER, Ltd. Nov. 16, 1942, No. 16180. Convention date, Nov. 25, 1941. Addition to 546,267. [Class 123 (ii)] In a boiler having furnaces 18, 19 on each side of a bank of water tubes 31 in the path of the gases from one of the furnaces 19, and a superheater 52 partly in the other furnace 18 and partly in path of the gases from that furnace, as described in the parent Specification, the furnaces are upwardly fired as by mechanical stokers 26, 24, and the gases are directed downwards from the top of the furnaces through passes 32, 51 before entering the passes containing the water tubes 31 and superheater 52.
Patent GB-573223-A (GB)
Title: Improvements relating to tine grabs
IPC: B66C3/10
Filed: 1943-10-04
Abstract: 573,223. Grab forks. WESTWOOD & CO., Ltd. J., POND, A. W., CHUTE FARMS, Ltd., SYKES, F., RANSOMES & RAPIER, Ltd., and BOWTELL, W. J. Oct. 4, 1943, No. 16265. [Class 78 (iv)] In a tine grab comprising two sets of inwardly curved fines 1, 2 pivoted at 6, 7 on a beam 9 disposed at or near the bottom of a rigid framework 10, 11 carrying power-operated opening and closing mechanism for the grab, the tines are substantially arcuate in the end elevation of the grab, With the centre of the arc at the axis of pivoting of the tines to the beam. The tines 1, 2 are rigidly mounted on bars 5 carried by arms 3, 4 pivoted at 6, 7 to brackets 8 on the beam 9 fixed to the vertical guides 10, 11, the bars 5 being connected by links 20, 21 to a cross head 23 slidable in the guides. A guide pulley 32 for the hoisting rope 33 is mounted in the head 23, and beneath fhe head 23 is a slide block 28 having a sheave 35 around which the rope passes to an anchorage 36 in the head. To open the grab from the closed position shown it is lowered on to the dump, the hoisting, rope is slackened off, the slide block 28 drops slightly and allows a weighted lever 43 to disengage a pin 41 carried by the slide block from a hook 37 fixed to the guides. The rope is then hauled in, raising the slide block 28 and head 23 to the top of the guides thus opening the tines by the links 20, 21, a push rod 47 fixed to the head 23 maintaining a weighted lever 44 in the raised position shown. By slackening the rope the slide block 28 is lowered, leaving the head 23 at the top of the guides, the weighted lever 44 falls and a pin on this lever rocks an arm 42 to move the pin 41 into engagement with the hook 37. Hauling in the rope again pulls the head 23 down in the guides and closes the tines, the push rod 47 raising the weighted lever 44 to the inoperative position shown. Stripped bars 48 are carried by the bracket 8 and have notches or holes 51 through which the tines extend. The tines may be provided with ball points and may be removable so that the spacing of the tines may be varied. The stripper bars 48 may be free to move upwardly so as to be displaced by the material in the grab. The ends of the grab may be closed in.
Patent GB-791661-A (GB)
Title: Recovery of phthalic acids
IPC: C07C51/487
Filed: 1955-06-08
Abstract: Phthalic acids are made by heating at least one di-substituted benzene in which either of the two substituents is a CONH2, COONH4 or COOH group, the other being a CONH2 or COONH4 group, with benzoic or toluic acid to remove benzonitrile or tolunitrile as vapour.  The di-substituted benzene or benzenes may be dissolved in a molar excess of molten benzoic or toluic acid and the solution heated to 400-600 DEG  F. for 0.1-4.0 hours and cooled to crystallize the phthalic acid which is filtered off.  The reaction is catalysed by sodium hydrogen sulphate, sulphuric acid or ammonium sulphate.  A suitable starting material may be obtained by heating a xylene with ammonium sulphate, a sulphide such as hydrogen sulphide or ammonium sulphide, and water to a temperature of from 550 DEG  F. to the critical temperature of water under superatmospheric pressure to maintain a part of the water in liquid phase to give a mixture of phthalic diamide, diammonium salt and half-amide half-ammonium salt.  In an embodiment the disubstituted benzene or benzenes may be subjected to a preliminary hydrolysis before treatment as described above, by acidifying an aqueous solution of the disubstituted benzene or benzenes with a mineral acid to a pH between about 2.5-3.5 and heating the acid solution to above 300 DEG  F. under superatmospheric pressure sufficient to maintain water in the liquid phase for 10-60 minutes, cooling to below 250 DEG  F. and filtering to recover essentially phthalic acids containing residual amide and ammonium salt groups.  A flowsheet illustrates the preparation of isophthalic acid from m-xylene by oxidation, preliminary hydrolysis and treatment with benzoic or toluic acid. In examples, mixtures of the diammonium salt, diamide and half-salt half amide of (1) isophthalic acid and (2) terephthalic acid are heated with toluic acid and benzoic acid respectively; (3) and (4) crude isophthalic acid, obtained by oxidation of m-xylene and preliminary hydrolysis, is heated with benzoic acid.
Patent GB-1328933-A (GB)
Title: Emulsifier compositions
IPC: C09K23/08
Filed: 1972-04-11
Abstract: 1328933 Chlorinated paraffin sulphonic acids and salts FARBWERKE HOECHST AG 11 April 1972 [16 April 1971] 16602/72 Heading C2C [Also in Divisions A5 and C5] The calcium salt of chlorinated n-paraffin sulphonates is prepared by passing chlorine gas into a 60% aqueous paste of a sodium salt of a straight chain paraffin sulphonic acid having 13 to 18 C atoms in the alkyl chain, exposed to ultra-violet light produced by a mercury high vapor pressure immersion burner. 1À5 gram atoms of chlorine per mol of paraffin sulphonate is taken up during the reaction. The free chlorinated paraffin sulphonic acid is isolated and neutralized with calcium hydroxide. The corresponding magnesium and barium salts are obtained by neutralizing the free acid with magnesium and barium hydroxide respectively. The zinc salt is produced from the free acid by treatment with zinc carbonate and the aluminium salt by treatment with aluminium triisopropylate.
Patent GB-169251-A (GB)
Title: A combination garden tool comprising a hoe, a rake, a spade or other similar tool
IPC: A01B1/22
Filed: 1920-06-19
Abstract: 169,251. Hubbard, A. E., and Brooks, C. H. June 19, 1920. Handles.-Gardening and like tools such as hoes, rakes, forks, spades, &c. are interchangeably secured to a handle, which preferably has a pivotal adjustment. As shown in Figs. 3 and 4 the handle 1 has a socket 13 to which is pivoted the boss 10 of a blade-holder 2 to which blades of hoes, spades, &c., or rakes, forks, &c. may be interchangeably fixed. The boss 10 is adjustably fixed to the boss 12 of the socket 13 by a laterally projecting screw stud and fly nut 14. A blade 16 of a hoe, a fork 17, a rake 20 or other blade or tool, is secured to the holder 2 by a fly nut 8 on a screw 7 projecting from the. holder. A slot 9 in the tool passes over the screw 7 and two perforations 5 engage on studs 3, the edge 6 engaging the shoulder 4 on the holder. Reference has been directed by the Comptroller to Specifications 19736/94, 6018/03, 25154/09, 121,255 and 142,649.
Patent GB-553973-A (GB)
Title: Improvements in and relating to electric frequency converter systems
IPC: H02M11/00
Filed: 1941-12-24
Abstract: 553,973. Frequency converters. TELEPHONE MANUFACTURING CO.; Ltd., and PADDLE, L. H. Dec. 24, 1941, No. 16639. [Class 38 (ii)] A frequency converter system comprises a main " unit M adapted to produce oscillations in its output circuit (at the right) of a lower frequency. than that of its input circuit (at the left) and a "pilot " unit P adapted to start up or maintain the low frequency oscillations of the main unit. The pilot unit may comprise an A.C. generator of the desired low frequency, Fig. 1 (not shown) or, as shown in Fig. 2, it may be an arrangement such as described in Specification 548,441. This arrangement is connected up to the main input circuit and produces a low frequency sub-harmonic oscillation which is transmitted through an impedance Z to the main output circuit and so starts and maintains the larger unit M. In modifications, a pilot unit controls an intermediate unit which controls the main unit; a pilot unit controls a number of main units, from each of which it is automatically disconnected by a relay when the main unit is functioning correctly ; and a pilot unit controls a polyphase system. The non-linear inductive element of the main unit may also be subjected to increased A.C. or D.C. excitation during the starting-up of the main unit by the pilot unit.
Patent GB-1420899-A (GB)
Title: Demand delivery device for watering small birds
IPC: A01K7/06
Filed: 1974-04-17
Abstract: 1420899 Animal drink dispenser F W ATCHLEY 17 April 1974 [23 April 1973] 16723/74 Heading A1M [Also in Division F2] A demand delivery drinking device supplies water only when a control member is actually being moved by a bird or other animal. The device comprises a tube 5 connecting a sealed container (not shown) to a chamber 6, and housing two balls 9, 10. Ball 9 moves only within chamber 6, and ball 10 can move within tube 5 and chamber 6. Ball 10 is confined to the lower end of tube 5 by the indentation 13, and ball 9 is confined between the shoulder 11 and the constricted opening 8 of chamber 6. In operation, upward movement of ball 9 displaces drinking water into chamber 6, and the resulting closure of tube 5 by ball 10 prevents water flow from the sealed container. Restricted leakage between ball 9 and the opening rim 25 inhibits pressure build-up in the sealed container, and is accomplished either by dimpling the surface of ball 9 or indenting the rim 25. The presence of a permanent water drop on the rim 25 attracts the animal to drink. For Figure see next column
Patent GB-380117-A (GB)
Title: Oil burning system
IPC: F23K5/04
Filed: 1931-06-09
Abstract: 380,117. Spray producers. PEABODY, Ltd., 161, Victoria Street, London.- (Peabody Engineering Corporation ; New York, U.S.A.) June 9, 1931, No. 16800. [Class 69 (iii).] In an oil burning system of the kind in which the oil is delivered under pressure through tangential passages 27, Fig. 4, in a tip 25 to a central chamber 28 for discharge from the tip orifice 30 in a cone-shaped spray and the amount discharged may be varied by returning a regulable portion of the oil whirling in the chamber 28 to the storage tank through a tube 22, means are provided for rendering the pressure drop in the tangential passages 27 and consequently the spray angle substantially constant and independent of the amount of oil discharged. Fig. 1 shows an oil burning system in which oil is delivered from a tank 1 by a pump 3 to atomizers 9 through a pipe 8 in which is arranged a valve 12 operated by a flexible diaphragm 13 which is subjected on one side to the oil supply pressure and on the other side to the pressure of an adjustable spring 15 and to the oil pressure in a return pipe 10 leading from the burner tip chambers. The spring 15 holds the valve 12 initially in the fully open position. When a valve 11 in the pipe 10 is opened to reduce the pressure on the tip chamber the valve 12 will close to reduce the pressure of the oil supply to the burners by substantially the same amount. In a modification a similar spring-pressed diaphragm operated valve is arranged in a byepass leading from the pipe 8 to the tank, the difference between the delivery pressure acting on one side and the return pipe pressure acting on the other side of the diaphragm causing the valve to open when a valve in the return pipe is opened. In another modification the difference between the pressures in the oil delivery and return pipes operates a valve to vary the steam supply to the oil pump. In a third modification shown in Fig. 7 a valve 11c controls the supply pressure to the burners 9 and a spring-pressed valve 12c operated by a diaphragm subjected to the oil supply pressure regulates the oil return pressure.
Patent GB-111693-A (GB)
Title: Improvements in or relating to Screw-cutting Machines, Dividing Machines and the like.
Inventor: SYMONS ANGUS BRYANT
IPC: B23Q23/00
Filed: 1916-11-27
Abstract: 111,693. Symons, A. B. Nov. 27, 1916. Dividing-engines.-Relates to correctors for screws of the type in which the nut or a projection from it follows a curved path by which the nut is turned about the screw to correct the inaccuracies in the latter and consists in making the corrector adjustable from its normal position so that further corrections can be made. As shown a hard steel pin E attached to the nut by which the slider of the machine is actuated is guided in a path formed by the edges of a pair of thin plates F<2> secured to a grooved plate F. This plate is pivoted about a pin H and can be secured in the adjusted position by nuts on studs J moving in curved slots in the supporting plate. A pointer K moving over a scale shows the amount of displacement.
Patent GB-1395672-A (GB)
Title: Electrode assembly
IPC: G01N27/401
Filed: 1973-04-09
Abstract: 1395672 Electro-chemical analysis TECHNICON INSTRUMENTS CORP 9 April 1973 [10 April 1972] 17007/73 Heading G1N In an electrode assembly comprising a fluid sample passageway having an ion-selective surface, and a reference electrode liquid junction the latter is arranged so that the passageway is fully circumferentially exposed to the reference electrode electrolyte flowing through the liquid junction. An ion-selective capillary tube 16, e.g. a membrane or sodium selective glass, is mounted in bore 12 of an insulating block 10, chamber 20 being filled with an electrolyte into which extends a Ag/AgCl measuring electrode 24. Tube 16 extends into bore 12 which is continued through boss 32 formed as a truncated cone with shoulders 34 and which co-operates with a block member 40 to form an annular chamber in communication with a recess 46. Thus electrolyte from a chamber 30 in which is positioned a Ag/AgCl reference electrode 31 is able to discharge into the annular chamber and thence via recess 46 completely around the sample path and into communication therewith. The sample passing through tube 16 and bore 12 carries the electrolyte through aligned bore 42 in block 40 and is discharged through nipple 42. The size of the recess 46 may be varied by adjustment of screw 52 which varies the distance between block 40 and block 10. The liquid junction may be positioned upstream of the ion selective portion. Two measuring electrodes may be employed in chamber 20 each sensitive to a different ion.
Patent GB-874114-A (GB)
Title: Improvements in or relating to cutting tools for lathes, shapers, planers and like machines
IPC: B23B27/16
Filed: 1959-05-20
Abstract: 874,114. Lathe &c. tools. DAIAN, D. May 20, 1959 [May 20, 1958], No. 17114/59. Class 83 (3). A cutting tool assembly comprises a holder 1 having a groove 6 which together with a clamping plate 3 is of dove-tailed section to receive a bit 7 of similar section, the base 5 of the groove being inclined at the desired rake angle. Plate 3 is secured by a screw 4 and has tapered dowels engaging holes in the holder. The clamping surfaces of the holder or the bit are coated with a soft metal such as copper or nickel which may be applied by electroplating. The clamping surfaces of the other member is left rough or intentionally roughened as by sanding.
Patent GB-169772-A (GB)
Title: Improvements in locking devices for electric and other hoists
IPC: B66B13/18
Filed: 1920-06-24
Abstract: 169,772. Barker & Sons, Ltd., J., and Saxton, J. June 24, 1920. Lift cages and doors, locking and unlocking.- 'The well gate of a lift is locked, when the cage is not opposite the gate, by a sliding spring-pressed pin 5 which engages a hole 7 in a tongue 2 on the gate and is released when the cage strikes a button 14 carried by an extension 3 of the pin. When the gate is closed, as shown, the tongue presses against a plate 15 on a spring-pressed rod 8 and causes an insulated metal ring 11 to close the control circuit 17. On the opening of the gate, the spring 13 forces the plate 15 and rod 8 to the right and breaks the circuit, so that the cage cannot be operated until the gate is closed. The mechanism is enclosed in a casing 1 built into the well of the lift.
Patent GB-111536-A (GB)
Title: Improvements in Traps for Rats, Mice and other Vermin.
Inventor: SIMPSON FRANCIS WILLIAM
IPC: A01M23/04
Filed: 1916-12-01
Abstract: 111,536. Simpson, F. W., and Simpson, R. Dec. 1, 1916. Animal traips.-Relates to animal &c. traps of the kind comprising a tank and a cover provided with pivoted floor-flaps enclosed by an openended cage forming a runway, and consists in making the cover invertible so that the projecting parts may fit inside the tank for packing purposes. The cover 14 is flanged to fit the tank 1 and carries the open-ended wire cage 2 formed with extensions 13 so that no projecting rib will afford a grip for the animal. Inclined approaches 4 may be hooked to upturned flanges 15 on the tank or cover. Within the run-way 3 the cover is provided with floor-flaps 5, 6, pivoted at 8, 9 and counterweighted at 7 so as to drop the animal into the tank. Retreat of the animal is prevented by wire forks or the like 10 suspended across the entrances, and supported by long arms 11 resting on the floor-flaps, the effect being that the forks drop with the floor-flaps and close the entrances. A bait hook 19 is provided, or a bait-carrier comprising a pair of boxes on a spring arc may be clipped over the cage. In a modification in which the cage is open at one end only, the bait may be in a closed box at the other end, or may be.attached to a hook slidable away from the opening on an inclined rail or wire.
Patent GB-581270-A (GB)
Title: Improvements in voltmeters incorporating thermionic valves
IPC: G01R19/00
Filed: 1944-09-11
Abstract: 581,270. Thermionic valve voltmeters; determining physical qualities of materials. WELLCOME FOUNDATION, Ltd., and THORP, R. H. Sept. 11, 1944, No. 17293. [Class 37] A voltmeter comprises a thermionic valve having a constant value of grid current for a wide range of. potential applied to the grid, a current meter in the anode circuit of the valve or the last of a number of valves, together with means for ensuring that the valve is worked at an operating point such that the change in grid potential caused by the maximum variation of E.M.F. to be measured together with the residual constant voltage due to a constant grid current flowing through the resistance of the source of E.M.F. and other stray constant potentials will result in a substantially linear change in the anode current and at the same time be within the range of constant grid current. A pentode V1, Fig. 1, is operated at 45 to 90 volts the anode circuit including a meter M which gives a full scale deflection for 100 microamperes and is provided with a variable shunt R1. The grid potential is derived from a potentiometer composed of three resistors R4, R6, R7, and is set at 1.0 volt negative by adjustment of R4. A backing-off circuit to counteract the steady anode current due to the constant potential applied to the grid is operated from a large capacity 1.5 volt dry cell 9. A thermal delay switch Sl prevents damage to the meter by current from the backing-off circuit before the pentode has heated to full emission. The outer grid 8 of the valve V1 is connected to the cathode, and the middle or screening grid 10 is connected to a source of constant potential. In these conditions with 45 to 90 volts anode potential the grid current curve passes through the' zero grid current potential at 0.9 volts and is then parallel with the abscissa and at a constant value of grid current, when the applied grid potential is more negative than this voltage. For measuring pH values the glass electrode of the cell is connected to the grid 7 in series with the bias potential by a press-button switch Z having high leakage resistance. A pH meter is shown in Fig. 2, the solution 11 whose pH is required to be determined being separated by a glass membrane 12 from a solution 13 of known pH value. In the solution 11 is a calomel half-cell 14 connected to one terminal of the valve voltmeter 16, a second calomel half-cell 17 in the solution 13 being connected to the other terminal.
Patent GB-861273-A (GB)
Title: Improvements in and relating to the casting of non-ferrous metals
Inventor: QUINTIN ALBERT ANDRE JOSEPH
IPC: B22D11/06
Filed: 1959-05-21
Abstract: 861,273. Continuous-casting machines. COMPAGNIE DES METAUX D'OVERPELTLOMMEL ET DE COMPHALIE. May 21, 1959. No. 17357/59. Class 83 (1). In a wheel-type continuous-casting machine, the endless metal band which closes an arcuate portion of the wheel-groove to form the mould cavity, is only weakly tensioned, a liquidtight-fit against the wheel-rim being secured by a device outside the wheel which applies the metal band against the rim, In one embodiment, Fig. 1, the band 3 is held against the wheel 1 by an endless-chain of metal blocks 7 backed by spring-loaded rollers 13. Coolant issues from nozzles 20. The band 3 is tensioned by a weight 24. To prevent the band curving inwardly into the wheel-groove 2, the bars are magnetized over that portion of their path where the band is in contact with the casting-wheel. Alternatively, magnets may be mounted above the band. Alternatively the bars 7 may be permanently fixed to the band 3. In a further modification, the casting is performed at the lower part of the wheel periphery, so that gravitational forces correct the tendency of the metal band to curve into the groove. In a further modification, Fig. 7, the band is backed by a spring-loaded cradle 49, with coolant passages 38 and a polished contact surface with grooves 42 to which lubricant is automatically fed under pressure from a device 41. Alternatively, the surface of the cradle may comprise a series of small rollers. In a further modification, Figs. 9 and 10, the edges of the band are held to the wheel-rim by rollers 61 carried on a spring-loaded frame 14 and the band is prevented from curving inwardly by the engagement of rollers 62 mounted on the back of the band, with rails 57 carried by the frame 14.