baber/WOPTO huggingface dataset:
Patent GB-951476-A (GB)
Title: Manufacture of solid ammonium phosphates
Inventor: BROWNLIE ISAAC ALLAN
IPC: C05B7/00
Filed: 1961-09-07
Abstract: A solid product comprising ammonium phosphate of N : P atomic ratio 0.95 to 1.6 is produced by a process wherein phosphoric acid and ammonia are added to an aqueous slurry of ammonium phosphate of flowable consistency at the temperature of working and having an N : P atomic ratio of between 1.2 and 1.8 to form more slurry of substantially the same composition and concentration and of flowable consistency and an amount of said slurry substantially equivalent to that produced by the addition of the phosphoric acid and ammonia is removed therefrom which comprises mixing the amount of slurry removed with an amount of a second liquid or slurry capable of ammoniation by it (i.e. of lower pH) so that the ammonium phosphate of the resulting product has a predetermined and lower N : P atomic ratio than that of the original aqueous slurry of ammonium phosphate, the moisture contents of the removed aqueous slurry and the second liquid or slurry being such that the resulting product solidifies during mixing, and treating said product above ambient temperature under such conditions as to effect forward transport and agitation involving repeated exposure of fresh surfaces thereof, and for a sufficient period of time for said product to be solid as hereinbefore defined at ambient temperature.  If this predetermined N : P atomic ratio is less than required for the desired said solid as hereinbefore defined then, subsequent to the mixing of the removed ammonium phosphate slurry with said second liquid or slurry, ammoniation is effected, after sufficient moisture is removed to prevent liquefaction during said ammoniation, to produce said solid having the desired N : P atomic ratio. The second liquid or slurry may comprise at least one mineral acid e.g. phosphoric acid, or it may comprise nitric acid or sulphuric or mixtures of these two acids. The mineral acid or mixture of mineral acids used may be itself partially ammoniated. An ammonium salt or urea may be introduced at or following the addition of the second liquid or slurry, either in the form of a solid or a concentrated aqueous solution. Example 1 refers to a solid product of ammonium phosphate of average composition 10.9% N, 50.8% P2O5, 9.6% H2O and N : P atomic ratio 0.95, which is made by the addition of 40% P2O5 "wet process" phosphoric acid at 24 DEG  C. and gaseous ammonia to a slurry of composition 45% P2O5, 14% H2O and N : P atomic ratio of 1.3 to 1.4, at 114 DEG  C.  An equivalent amount of the slurry is withdrawn and treated with sufficient 47.5% P2O5 "wet process" phosphoric acid at 66 DEG  C. to produce an overall N : P atomic ratio of 0.95.  The moisture is removed, and the solid product at 69 DEG  C. contains 9.6% H2O. Example 2 refers to the production of an ammonium phosphate of N : P atomic ratio of 1.0, Example 3 to the production of an N : P atomic ratio of 1.6, and Example 4 to an NP atomic ratio of 1.55. Specification 951,475 is referred to.
Patent GB-1170379-A (GB)
Title: Improvements in or relating to Magneto-Optic Devices
Inventor: GUGGENHEIM HOWARD JOSEPH
IPC: G02F1/00
Filed: 1968-07-08
Abstract: 1,170,379. Zone-melting, &c. WESTERN ELECTRIC CO. Inc. 8 July, 1968 [17 July, 1967], No. 32423/68. Heading B1S. [Also in Divisions Cl and H4] Rubidium iron fluoride is first zone-melted in a boat of platinum or graphite in an atmosphere of nitrogen or helium and then progressively crystallized and annealed in a Bridgman crucible of platinum or graphite having a tapered bottom in an inert atmosphere or a vacuum. A portion of the iron may be replaced by cobalt, vanadium, nickel, or manganese.
Patent GB-447246-A (GB)
Title: Improvements in the manufacture and production of magnesia poor in lime from dolomite
IPC: C01F5/22
Filed: 1935-11-22
Abstract: Magnesium hydroxide is obtained by the reaction of calcined and slaked dolomite with magnesium chloride solution in the presence of ammonia or ammonium salts.  From the resulting calcium chloride solution containing ammonia, &c., calcium carbonate may be obtained by treatment with more calcined and slaked dolomite and carbon dioxide with regeneration of the magnesium chloride containing ammonia &c.  The reactions are preferably carried out below 20 DEG C., and the carbon dioxide used in obtaining calcium carbonate is preferably that obtained by calcination of the crude dolomite.  In burning the latter, material of a grain size of 5--25 mm. may be used, and the burnt material, after slaking to a dry powder, be separated into two fractions of about equal amounts by sifting, it may be through a 100 mesh sieve.  The fine fraction is used in the preparation of the magnesium hydroxide, and the coarse fraction, after comminution if desired, in the preparation of the calcium carbonate.  If desired, substances such as iron oxides or soapstone may be added during the precipitation of the magnesium hydroxide, to render it suitable for conversion into "sintermagnesite."
Patent GB-521127-A (GB)
Title: Improvements in electrically controlled relays
IPC: H01H53/10
Filed: 1938-11-08
Abstract: 521,127. Electromagnet relays. ALLIERI, L. Nov. 8, 1938, No. 32453. Convention date, Nov. 8, 1937. [Class 38 (v)] A relay which may be operated by very weak currents is normally held against movement by a vane 15 engaging a slot in a disc 3 ; the vane is itself under electromagnetic control which operates, simultaneously with the energization of the relay, to remove it out of locking engagement with the disc. The relay is thus prevented from inadvertent operation due to shock. In the form shown, parallel circuits feed the coil controlling the vane and the coil A of the relay. Both coils are situated in magnetic fields, so that currents through them tend to turn them. The coil A is mounted on a spindle B which carries a wheel 2<1> gearing with a wheel 2 on a spindle 1 which carries the.disc 3 and also a projection D adapted to release a lever E and operate contacts or other device. In modifications the disc 3 has a down-turned rim, or the slot may be formed in one of the toothed wheels which is in this case, provided with teeth over part only of the periphery.
Patent GB-1058982-A (GB)
Title: Method of detecting directional rotational deviation of a moveable body
Inventor: ENSLEY DONALD LUTHER
IPC: G01P15/13
Filed: 1964-02-12
Abstract: 1, 058, 982. Photo-electric sensing of movement. HARVEST QUEEN MILL & ELEVATOR CO. Feb. 12, 1964, No. 32453/64. Divided out of 1, 058, 981. Heading G1A. The subject matter of this Specification is included in the parent Specification and the claims relate to a method of detecting rotational deviation by suspending a body, which is doubly refracting and which has the effect of rotating the plane of polarization of light through an angle dependent upon its angular position, between crossed polarizers and measuring the degree of light transmission.
Patent GB-521132-A (GB)
Title: Improvements in hinged shields for electric switches and like controls
IPC: H01H9/28
Filed: 1938-11-09
Abstract: 521,132. Shields for electric switch casings &c. GRAVINER MANUFACTURING CO., Ltd., and MATHISEN, A. Nov. 9, 1938, No. 32499. [Class 18] A hinged shield for protecting electric switches &c. e.g., a push button, for controlling the discharge of fire-extinguishing fluid on aircraft or for operating landing flares, is spring-actuated so that it snaps into the open and closed position. For this purpose a leaf spring 12 is provided which engages cams 5 on a clamping ring removably secured to the casing of the switch &c.
Patent GB-948202-A (GB)
Title: Boron-modified epoxide resins
Inventor: NOWAK PAUL
IPC: C08G59/30
Filed: 1961-09-11
Abstract: Epoxy resins of the bisphenol class are modified by reaction with tri-alkyl borates and then hardened with hexahydrophthalic or dodecenylsuccinic acid anhydride.  Reaction with the borate is preferably at comparatively low temperatures and mainly with hydroxyl groups of the epoxy resin, the epoxy groups being unaffected. The boron-modified product is stable in admixture with the acid anhydride hardener up to a temperature of about 150 DEG C., but rapidly hardens at higher temperatures, e.g. 160 DEG C. It may be stored for long periods as a thin liquid at 140 DEG C. In Example (1) a bisphenol resin (epoxide equivalent 190;0.2 hydroxyl groups /mol.) is reacted with tributyl borate, butanol being removed at 120 DEG C. in vacuo. The product is hardened with hexahydrophthalic anhydride in 15 hours at 150 DEG C.  (2) A bisphenol resin (epoxide equivalent 500; 2 hydroxyl groups/mol) was similarly modified with tributyl borate, and subsequently cured with dodecenyl-succinic anhydride in 2 hours at 160 DEG C.
Patent GB-1286160-A (GB)
Title: Gear pumps or gear wheel motor housings
IPC: F04C2/12
Filed: 1970-07-06
Abstract: 1286160 Casting composite articles ROBERT BOSCH GmbH 6 July 1970 [27 Sept 1969] 32576/70 Heading B3F [Also in Division F1] The easing of an externally meshing gear machine (see Division F1) is formed by an alu. minium chill casting cast around, and entirely enclosing, a sheet steel reinforcing insert in the form of a tube having flanged ends, located near the inner surface of the casing wall, and provided with cut-outs to accommodate inlet and outlet openings and bolt holes formed in the casting.
Patent GB-708710-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B9/12
Filed: 1952-12-23
Abstract: 708,710. Centrifugal separators. LAVAL SEPARATOR CO. Dec. 23, 1952 [Dec. 26, 1951]. No. 32608/52. Class 23 [Also in Group XXXIV] A frame 10 contains a centrifugal bowl 13 which is axially adjustable in its support 12 relative to a table 16, which supports a can 17 supplying material, preferably milk, to the bowl by way of a cook 18. Bearings 38,. 39 for a driving spindle 29 are preferably supported in flexible bushes 36, 37 which allow limited axial and vertical movements during the running of the bowl, enlarged spaces 34, 35 receiving the bushes 36, 37. The whole bowl: and spindle unit is adjustable vertically, relative to the support 12, by means of a screw 77 having a head 80 which engages a slot 75 in a bearing mount 33. The latter is locked in position by means of a screw 81. A motor 48, mounted on the side of the support 12, drives pulleys 53, 31, connected by a belt 54, the pulley 31 being long enough to cater for the adjustments of the spindle. The frame 10 may be cast in one piece or built up of separate parts and is supported on a stool 23 by means of an annular shoulder 22. The bottom of the can 17 is provided with a recessed ring 62 containing a hollow plug 64 which has a hole 65 for a locating pin 66 on the can which is removable from the plug 64. Thus the proper alignment of the cock 18 with the inlet receptacle 57b is assured. The bowl 13 is of conventional type and has an inlet cover 57 containing a float 57a for controlling the flow of liquid through a passage 57b. Covers 58, 59 receive the separated liquid components discharged from the bowl.
Patent GB-460258-A (GB)
Title: Process and apparatus for the production of concrete road surfaces
IPC: E01C19/02
Filed: 1935-11-25
Abstract: 460,258. Road rollers. HOLTER, A. Nov. 25, 1935, Nos. 32685 and 32686. Convention dates, Dec. 1, 1934 and July 12, 1935. [Class 6 (i)] [Also in Group X] A method of making concrete roads consists in placing stones upon a layer of cement-sand mortar, mixing the stones and mortar by means of a number of spaced rods or plungers arranged for progressive movement over the surface, and finally rolling the surface to smooth it. The rods or plungers press correspondingly spaced areas of the stones into the mortar, thus providing a surface which is able to carry the roller used for the subsequent smoothing treatment. In the construction shown, the plungers 16 extend radially from a roller 5 mounted on a carriage 3, the wheels 4 of which are arranged to run on side rails 1. The roller can be adjusted vertically to regulate the depth of penetration of the plungers. The Specification as open to inspection under Sect. 91 describes also means for vibrating the smoothing roller. The vibration may be effected by eccentric weights mounted within the roller, or by a number of loose balls or rods which are lifted and subsequently released by longitudinal ribs spaced around the circumference of the inner surface of the roller. This subject-matter does not appear in the Specification as accepted.
Patent GB-618621-A (GB)
Title: Improvements relating to hand trucks
IPC: B62B1/10
Filed: 1946-11-05
Abstract: 618,621. Hand trucks. WALKER, S., and GARTH, G. E. Nov. 5, 1946, No. 32802. [Class 108 (i)] A hand truck adapted to be moved easily up steps comprises a U-shaped frame 1, to the open ends of which are welded downward extensions 5 set tangentially to the outer periphery of wheels 9 on the side nearest to the handle and then bent upwards at 6, 7 to form a toe-plate. An axle 8 is welded to extensions 5 and frame 1 is reinforced by cross-members 3 and a longitudinal member 4, terminating in a flat extension 12, slotted at 13 and supporting a leg 11. A two-wheeled bogie 17 is provided with an upwardly extending lug 19 to engage with slot 13 to convert said hand truck into a four-wheeled truck. The bogie is so shaped that it may be " parked " closely against the truck when the latter is resting on its end support 6, 7.
Patent GB-831759-A (GB)
Title: Improvements in or relating to poppet type thermostatic valves
Inventor: DRAPEAV HAROLD BURTON
IPC: G05D23/02
Filed: 1957-10-21
Abstract: 831,759. Valves. DOLE VALVE CO. Oct. 21, 1957, No. 32820/57. Class 135. A thermostatic valve for the cooling system of an internal-combustion engine comprises a body 14 having a valve seat 17 on its upstream side spaced radially outwardly from a flow opening 29, a guide 31 radially inward of the opening on the downstream side, a supporting member 36 extending from one side and carrying the relatively stationary reaction member 26 of a temperature-responsive element having a movable casing 25 loosely supported in the guide and carrying a valve closure member 20 on the upstream side. Due to the loose fit of the temperature element plunger 26 in the end of member 36, the valve can tilt to reduce fluttering on initial opening and reduce leakage due to dirt when closed. The member 36 has T- ends 34 snapping into T-slots 33 in the body and prevented from being dislodged by valve closing spring 38 bearing between a guide groove 32 and a collar 39 on casing 25, leakage through the slots and guide being prevented when the valve closes on the upstream side of the body.
Patent GB-1130437-A (GB)
Title: Driver circuit
IPC: G06F3/08
Filed: 1967-07-18
Abstract: 1,130,437. Selective signalling. INTERNATIONAL BUSINESS MACHINES CORP. 18 July, 1967 [15 Aug., 1966], No. 32864/67. Heading G4H. In a system in which a command signal, Fig. 2, at the beginning of one cycle causes some operation, e.g. punching or printing, to occur at the beginning of the next cycle, each command signal is compared with the previous command signal and only if they differ is the state of the device which effects the operation changed. The system described is for controlling a punch 25, Fig. 1. To effect punching a magnet 18 has to be de-energized at time G in a cycle of operation determined by a cam-shaft 22, to allow a lever 20 to move away from the magnet under the action of a spring 21 and interpose a member 23 between a striker 24 and the punch 25. Punching then occurs at the beginning of the next cycle after which the cam 22 forces the lever 20 back to its position against the magnet (as shown) and withdraws the interposed member 23. If the magnet 18 is energized at this time then the lever 20 is held against the magnet and no punching occurs in the next cycle. If the magnet is not energized then lever 20 continues to follow cam 20 and punching does occur in the next cycle. Incoming punch command data-Fig. 2 shows the sequence "11001"- occurs on a line 12 and each bit sets a latch 15 at C time. Thus the "1" bit in the first cycle sets latch 15 at C time. At G time, if a latch 16 which controls magnet 18 is not reset, as in the first cycle, then the "1" bit stored in latch 15 causes it to be reset via a gate 31. This deenergizes magnet 18 and causes punching to occur at the beginning of the second cycle. At C time in the second cycle the incoming "1" bit is again stored in latch 15, this having been reset at A time. At E time in the second cycle an attempt is made via a gate 32 to set latch 16 and thus re-energize magnet 18. However, since at this time latch 15 is set, gate 32 is not open, and therefore latch 16 remains reset and punching occurs at the beginning of the third cycle. The incoming data bit for the third cycle is a "0", therefore latch 15 is not set and at E time latch 16 is set. This re-energizes the magnet 18 and no punching occurs at the beginning of the fourth cycle. However, to ensure that the lever 20 does not bounce off magnet 18 the current through it is momentarily increased during F and G times by a monostable circuit 34 which is turned on, in these circumstances via a gate 33, to remain on for longer than F and G times, and which allows a pulse from two S.C.R.'s 40, 41, to be superimposed upon the normal magnet current. The necessity for this feature depends upon the precise characteristics of the punching mechanism and in certain circumstances it may not be needed. This leads to simpler circuitry (Figs. 3 and 4, not shown).
Patent GB-798390-A (GB)
Title: Cushioned foot protector
IPC: A43B7/22
Filed: 1956-10-29
Abstract: 798,390. Foot protector. NEWBY, R. L. (Landenberger & Co., J. W.). Oct. 29, 1956, No. 32865/56. Class 17(2) A foot protector comprises knitted toe and heel pockets 11, 12 having a binding seam 13, which may include an elastic thread, and a pear-shaped cushioning pad 14 preferably of moulded foam rubber disposed in the area of the ball of the foot.
Patent GB-717488-A (GB)
Title: Process for the catalytic polymerisation of acrylonitrile
IPC: C08F20/44
Filed: 1952-12-29
Abstract: Acrylonitrile is polymerized alone or in admixture with one or more polymerizable compounds, other than aliphatic olefines, which are soluble in water and in organic solvents, in an emulsifier-free aqueous solution in which a polymerization catalyst is dissolved, the concentration of the acrylonitrile monomer and other monomers, if present, being kept constant by vigorously stirring with one or more organic solvents for the monomer or monomers, which are immiscible with water, and in which the polymerization catalyst is insoluble. Solvents specified are pentane, isopentane, hexane, isohexane, heptane, isoheptane, cyclopentane, cyclohexane, cycloheptane, benzene, and toluene. Copolymerizable monomers specified are 2, 3-, and 4-vinyl pyridines, vinyl isopropyl ether, and methoxy ethyl vinyl ether. As a catalyst there may be used alkali and ammonium persulphates, which may be activated by water-soluble reducing agents such as sulphites, bisulphites, metabisulphites, polyhydroxy compounds and/or water-soluble compounds of heavy metals such as copper sulphate and silver nitrate.  The aqueous polymerization medium may contain a salt dissolved therein, and preferably has a pH of between 2 and 5.  Specification 586,796 is referred to.
Patent GB-1400174-A (GB)
Title: Method and apparatus for producing nonwoven fabrics
IPC: D21F1/00
Filed: 1972-07-13
Abstract: 1400174 The production of non-woven fabrics INTERNATIONAL PAPER CO 13 July 1972 [21 July 1971] 32925/72 Heading D2A Apparatus for producing non-woven fabrics comprises a headbox 2 having an inclined discharge opening part which extends a Fourdrinier wire 18, and a suction box 34 below the wire and including compartments 36a to 36j in each of which is a baffle 62 extending substantially the width of the discharge opening, the arrangmemt being such that the baffle restricts the flow of liquid through the compartment to produce over the width of the wire a substantially uniform pressure differential and so uniform flow of water through the wire. Each compartment 36 has a discharge pipe 40 connected through a control valve to a barometric drop leg. The uppermost compartments, e.g. 36h to j are each also individually connected to a vacuum pump to allow for variation in the level of the stock in the head box. The suction box 34 has a cover 42 carrying foils 44 with replaceable tips 46 of plastics material, e.g. polyethylene, and it has a bottom which slopes transversely of the wire. Each baffle 62 is T-shaped in cross-section with one end of its top flange preferably rounded and bevelled, Figs 3 and 6 (not shown), and it is supported at that end on a pad engaging the bottom of the box, the pad being secured against sideways movement of the baffle by strips welded on the bottom, Fig 2 (not shown). Members 80 align the baffle in the suction box compartment. The baffles are preferably of metal but may be of plastics material or wood, and each may be adjustable in length and in width the adjustment in length premitting production of a fabric with thick or thin edges. In an alternative construction each baffle may have one or more slots in its top flange with the side edges of the flange abutting the side walls of the suction box compartment.
Patent GB-898094-A (GB)
Title: Process for dyeing or printing cellulose fibres
IPC: C09B62/44
Filed: 1959-09-28
Abstract: Fibres of natural or regenerated cellulose are dyed or printed with a non-substantive dyestuff, e.g. an azo, nitro or anthraquinone dyestuff, containing at least one solubilising group and at least one group of the formula <FORM:0898094/IV (c)/1> in which R and R1 represent aliphatic or cycloaliphatic radicals or together with the nitrogen atom form a heterocyclic ring, the dyestuff being applied in the presence of an alkaline reagent, e.g. sodium carbonate or hydroxide, and fixed by heating or steaming.  Examples of dyeing and printing, and lists of suitable dyestuffs are given.  Specification 453,437 is referred to.
Patent GB-691039-A (GB)
Title: Improvements relating to the production of luminescent zinc and zinc-cadmium sulphides
IPC: C09K11/58
Filed: 1948-12-21
Abstract: 691,039. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd., and WARD, H. F. Dec. 1, 1949 [Dec. 21, 1948], No. 32956/48. Class 39(i). Luminescent zinc sulphide, cadmium sulphide or zinc-cadmium sulphide is prepared by using the chloride of an alkali metal, an alkaline earth metal or ammonium and an alkali metal or ammonium phosphate as a flux and silver as an activator. Preferably, in the preparation of zinc sulphide or zinc-cadmium sulphide, ammonium chloride in the proportion of 2-5 per cent by weight of the sulphide, and an ammonium phosphate in the proportion of about 6-20 per cent by weight of the sulphide, is used. In examples described di-ammonium hydrogen phosphate and ammonium chloride are used as flux and silver as activator and the fired product is washed in distilled water or ammonia. Specifications 473,715, [Group III], and 501,707 are referred to.