baber/WOPTO huggingface dataset:
Patent GB-701245-A (GB)
Title: Process for producing stable silica sols
Inventor: RULE JOSEPH MCBATH
IPC: C01B33/151
Filed: 1951-11-17
Abstract: An aqueous silica sol is produced by building up the size of particles in a substantially salt-free silica sol of spherical unaggregated dense particles by mixing with the sol a substantially salt-free sol of active silica, while maintaining the pH at 7.5-10.7, and heating the combined sols at above 60 DEG C. in the presence of a base having a monovalent cation M, the molecular ratio of SiO2 to M2O in the product being from 130:1 to 500:1.  The freedom from salt is such that the sols have a specific conductance, measured at 2 per cent.  SiO2 and 28 DEG C., of not more than 17 x 10-5 mho/cm.; a sol of active silica is defined as a sol in which, at pH 12 and 0.02 per cent. SiO2, at least 90 per cent. depolymerises to the monomer in not more than 100 minutes.  Methods of preparing the active silica sol include hydrolysis of methyl silicate, silicon tetrachloride, or silicon sulphide, electro-osmosis or electrolysis of sodium silicate, or treatment of sodium silicate with cation-exchange resins as described in Specification 645,703; anions may be removed by contacting the sol with an anion-exchange material, for example of the metaphenylenediamine-formaldehyde or guanidine type.  The sol to which the active silica is added may be prepared by adding a base of a monovalent cation to a sol of active silica to adjust the pH to 6-9 and heating to above 60 DEG  C. to form a "heel" sol; the amount of silica added is at least equal to, and preferably 3-15 times, that present in the "heel" sol.  The base may be derived from lithium, sodium, potassium, rubidium, caesium, ammonium, tetramethylammonium, trimethylamine, or ethanolamine, and may be added as hydroxide or soluble silicate, either before or during addition of the active silica to the "heel" sol.  Preferably the mixture to which the active silica sol is added at its boiling point, and the volume is kept constant by means of evaporation.  The sols may be concentrated to an SiO2 content of up to 45 per cent. and are stable against gelation, compatible with water-miscible organic solvents, and may be incorporated with polymeric materials.  Specifications 663,013, 667,154, and 699,557 are referred to.
Patent GB-246419-A (GB)
Title: Improvements in and relating to pneumatic vehicle wheels
IPC: B60B5/02
Filed: 1925-10-28
Abstract: 246,419. Atwood, H. N. Oct. 28, 1925. Disc wheels; spring wheels. - Rim flanges 2 for a pneumatic tyre are formed by bending over the flared edges of two wheel sections 3, each section being formed of plies of veneer 4 alternating with bonding plies 5 of rubber, rubbered fabric, or the iike. The tvre seats on a soft rubber cushion 10 fitted between the flared edges of the sections, and transverse bolts 11 may secure the rim flanges against spreading. A facing ply 8 of rubbered fabric is applied in the inner and outer faces of the sections as shown. In a modification, the cushion 10 may be formed in two halves grooved in their opposing faces to form an annular air chamber. Specification 201,491 is referred to.
Patent GB-760488-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04D5/00
Filed: 1953-10-02
Abstract: 760,488. Centrifugal pumps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAM. PENFABRIEKEN. Oct. 2,1953 [Oct. 7, 1952], No. 27125/53. Class 110 (1). In a pump comprising a vaned rotor rotating in a housing and comprising a number of inlet and outlet connections, a change-over member arranged rotatably and concentrically about the rotor has profiled portions co-operating with chambers enclosed by the rotor vanes for varying the volume of the chambers whereby liquid is caused to enter and discharge from the chambers, partial rotation of the change-over member changing the connections. In the circumferential-flow pump shown in Figs. 1, 2, 3 and 5, the vaned rotor 4 co-operates with a disc 7 having a flange 7a which merges with a thickened lobe 7c. The variation of size of the chambers enclosed by the rotor vanes which occurs as each chamber passes the lobe 7c causes the liquid to be drawn in through a port 9 and discharged through a port 8, both ports being formed in the disc 7. When the disc is in the position shown, the ports 8, 9 register respectively with a delivery port 10 and a suction port 11 formed in the end plate 1 of the pump casing. When the direction of rotation of the pump rotor 4 is reversed the disc 7 is carried round by the frictional drag of the rotor into an alternative position in which the ports 8 and 9 register respectively with the suction port 11 and another delivery port 12. The movement of the disc 7 is limited by the engagement of a pin 13 with an arcuate slot 14. In an alternative construction, Fig. 4, three pairs of ports 16, 19; 17, 18 and 21, 22 are formed in the plate 1, the dimensions B being identical. The disc 7 can be moved, either by manual or electrical means, to bring the ports 8, 9 into registration with any one of the pairs of ports, the direction of rotation of the rotor determining the direction of flow through the selected ports.
Patent GB-803971-A (GB)
Title: Improvements in jugs and like pouring vessels
IPC: A47G19/14
Filed: 1955-09-23
Abstract: 803,971. Pouring vessels. LASCELLES, L. Sept. 19, 1956 [Sept. 23, 1955], No. 27131/55. Class 66. Drips from the lip 2 of a jug 1 are collected in a lower channel 3 and conveyed back to the jug 1 through holes 4 in the rim of the jug adjacent to the lip sides.
Patent GB-203554-A (GB)
Title: A new or improved machine for planting cuttings
IPC: A01C11/00
Filed: 1922-10-07
Abstract: 203,554. Elias, J. J. M. Oct. 7, 1922. Cane, and like planters. -A machine for planting two rows of cuttings, particularly sugar-canes, simultaneously comprises a motor-carriage frame divided by central longitudinal partitions and cross boards into a number of separate compartments 2 from which the cuttings are delivered singly on to side travelling- belts 7 by rotary drum feeders 5, the longitudinally-arranged cuttings being fed by the belts to end shoots 19 leading to the planting ridges. The plants may be pressed into the ground by rollers 22, which are yieldingly mounted and provided with rubber tyres. The inclined bases 33 of the compartments feed the cuttings to the revolving drums 5, mounted in series on a shaft 4 at the side of the vehicle and rotated by worm-gearing 8 and a chain 14 from the rear wheel 15. Each drum has a carrier chamber 38 with an adjustable opening 37, the cuttings being delivered singly by a suitable adjustment of a plate 35 on the bracket 34. The cuttings are deposited on the belt 7, which is provided with side boards 18 and driven by the end shaft 10. The shoots 19 and presswheels 22 are pivotally mounted at the rear of the vehicle, and they can be raised or lowered by the operation of a screwed shaft 30, which engages at its lower end with an extension 26 of the frames supporting the shoot and wheel-members.
Patent GB-242629-A (GB)
Title: Improvements in diffusing nozzles for fuels or fuel mixtures
IPC: F23D11/40
Filed: 1925-10-29
Abstract: 242,629. Hackethal, P. F. Nov. 4, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray burners; atmospheric gas burners. - A nozzle for injecting liquid or gaseous fuel or fuel mixture into a combustion chamber in an atomized or diffused condition comprises a cylindrical plug fitted in a cylindrical sleeve so as to leave a narrow annular fuel discharge passage of uniform width. Fig. 1 shows a burner nozzle comprising a sleeve 2 of uniform bore, a cylindrical plug F screwing into the sleeve 2, and a mixing tube 4 secured to the sleeve 2 and formed with air inlets 5. The plug F consists of a section 6 closely fitting the sleeve 2 and a section 7 of slightly reduced diameter. The fuel passes through a passage 11 to an annular groove 10 between the sections 6, 7 and is distributed uniformly into the narrow annular discharge passage 9 between the section 7 and sleeve 2. A number of sets of interchangeable sets of parts may be provided to allow the employment of annular discharge passages of different widths and diameters but of the same cross sectional area.
Patent GB-1532157-A (GB)
Title: Low-density polyethylene-based polymer composition for manufacturing thin films or sheaths
IPC: C08L51/02
Filed: 1977-06-29
Abstract: 1532157 Graft polymers ATO CHIMIE 29 June 1977 [8 July 1976] 27214/77 Heading C3P Graft polymers suitable for making films may be prepared by grafting 5-50% of a styrene monomer or mixture thereof with an acrylic monomer on to a preformed mixture of 50-95% low density polyethylene and 50-5% high density polyethylene and/or polypropylene. In examples films are made from materials prepared by grafting styrene, chlorostyrene and mixtures of styrene with methyl styrene or acrylonitrile on to mixtures of low density polyethylene with high density polyethylene or polypropylene in aqueous suspension in the presence of t-butyl perbenzoate.
Patent GB-214556-A (GB)
Title: Improvements in or relating to cotter pin
IPC: F16B21/14
Filed: 1923-10-31
Abstract: 214,556. Carlson, F. W. Oct. 31, 1923. Cotters. - A split cotterpin of the type having a looped head compressed by pliers to cause the legs to open and thereby lock the pin is formed with a notch 11 on the inner side of the shorter leg to facilitate bending when the bevelled edge of the leg engages a corresponding notch 9 on the other leg as the loop 7 is compressed.
Patent GB-542073-A (GB)
Title: Improvements in oil burners
IPC: F23D11/30
Filed: 1939-10-05
Abstract: 542,073. Liquid fuel burners. AKTIEBOLAGET GOTAVERKEN. Oct. 5, 1939, No. 27299. Convention date, April 4. [Class 75 (i)] A portion of the oil atomized by a spraying nozzle is caught by a rotatable drum and removed from the combustion zone. Fig. 1 shows a water-heating plant in which an electrically driven pump 10 supplies fuel from a tank 17 through a thermostatic control device 16 to a spraying nozzle 14 preferably of the adjustable spraying angle type described in Specification 542,835. The tubular motor shaft 11 operating the pump 10 carries a fan 9 supplying air for combustion through a housing 5. A drum 12 secured at the front of the shaft 11 catches the surplus oil which is discharged through holes 20 into a stationary housing 13 from which it passes through a drainpipe 21 to the tank 17. Fig. 2 shows a spraying nozzle 29 discharging into a tapering drum 30 rotating on ball bearings 32 on the nozzle housing 28 which is apertured to admit air. The drum 30 is formed with a flange 38 rotating in an annular housing 40. The surplus oil collecting in the housing 40 is forced  by blades 39 on the flange 38 through a pipe 41 leading to the oil tank. An annular air deflecting plate 42 is mounted in the burner housing 26 by vanes 44 which may be arranged tangentially. Fig. 4 shows a modification in which the tapered rotating drum 47 is continued by a conical wall 53 formed with a central discharge opening 54 for the atomized jet and openings 55 are provided at the portion of the drum of largest diameter to discharge part of the fuel into an annular housing 57. Blades 56 on the drum force the oil in the housing 57 to a discharge conduit 58.
Patent GB-309565-A (GB)
IPC: C01C1/246
Filed: 1928-09-24
Abstract: 309,565. Hansen, C. J., (Assignee of Koppers Akt.-Ges. H.). April 14, 1928, [Convention date]. Sulphur.-Ammonium thiocyanate obtained for example in scrubbing coal distillation gases is treated to yield ammonium sulphate and sulphur by heating in presence of a solution containing a polythionate, thiosulphate, free sulphurous acid, or ammonium sulphite or bisulphite. In a thionate process for purifying gas, the hydrolysis of the thiocyanate may be effected by heating the wash liquor, preferably under pressure and at temperatures of 100-160‹ C. When a thiocyanate solution is recovered separately, it may be decomposed by forcing it into a vessel containing the heated tbionate solution.
Patent GB-850976-A (GB)
Title: Improvements in or relating to hemicyanine dyestuffs
Inventor: DUFFIN GEORGE FRANK
IPC: C09B23/10
Filed: 1957-08-30
Abstract: Compounds of the general formula:  CN,CH2CONH,N = CRaRb wherein Ra is H or alkyl and Rb is aryl, aralkyl or substituted aryl, are prepared by reacting a -cyano-acethydrazide with an aldehyde or ketone of the formula Ra,CO,Rb.  Examples are given of the reaction of a -cyano-acethydrazide with benzaldehyde, m-nitrobenzaldehyde, p-chlorobenzaldehyde, p-anisaldehyde, acetophenone or phenylacetone. According to the Provisional Specification, Rb may be also alkyl.ALSO:Hemicyanine dyes of the general formula:- <FORM:0850976/IV (c)/1> wherein R is alkyl or aralkyl, Ra is H or alkyl, Rb is aryl, aralkyl or substituted aryl and D completes a 5- or 6-membered heterocyclic nucleus, are prepared by condensing a cyclammonium quaternary salt having an a -acetanilidovinyl group with a compound of the formula CN,CH2CO,NH,N=CRaRb.  Examples are given of the preparation of dyes wherein D completes a benzthiazole, benzoxazole, indolenine, pyrazolenine or pyrroline nucleus, R is methyl or ethyl, Ra is H or methyl and Rb is phenyl, m-nitrophenyl, p-methoxyphenyl, p-chloro-phenyl or benzyl. According to the Provisional Specification, dyes having two less methine groups in the chain may be prepared from cyclammonium quaternary salts having an a -alkylthio group.  Reference also is made to dyes wherein the heterocyclic nucleus D is linked to the methine chain in g -position, and wherein R is also hydroxyalkyl or carboxyalkyl and Rb is also alkyl.
Patent GB-537842-A (GB)
Title: Improvements in or relating to automatically-reclosing electrical switch-gear
IPC: H02H3/06
Filed: 1939-10-06
Abstract: 537,842. Gas-blast switches; protective cutout systems. MASCHINENFABRIK OERLIKON. Oct. 6, 1939, No. 27375. Convention date, Oct. 11, 1938. [Class 38 (v)] A power-switch has a pair of pneumaticallyactuated contacts zl, z2, the former being spring returned, the arrangement being such that in a normal opening operating, both move, whereas, on fault, z1 only moves, is reclosed after 0.1 seconds, say, whereupon, if the fault persists, both contacts open and a second and further reclosures are retarded under control of a reclosing relay. Operation of trip relay m energizes the coil of a trip valve f and the coilq2- of a locking valve q, the former admitting air from container u above the piston of a main valve g which, as q is closed, admits air only to the switch chamber to open contact z1 and quench the arc. This movement of main valve g actuates a switch t which de-energizes valve f and changes over the energization of valve q to a retaining winding q3, and also energizes a relay sl which closes lower contacts to start the motor of reclose relay s2 the motor-maintaining circuit being subsequently changed over from contact 1 to contact 2. Meanwhile, reclosure of f restores g at a rate depending on the adjustment of exhaust port x of valve f, and giving at least a 0.1 seconds-interval for reclosure of z1. When g is restored, t breaks the retaining circuit of valve q which again restores the connection to the operating cylinder of contact z2. If the fault is still present, m again closes but the operating coil of valve q is not energized as the contact 31 of s1 is still open. Hence the air is admitted also to the top of piston b which opens contact z2, in addition to z1 being opened. Reclosure of z2 takes place by means of the reclose valve c, the coil of which is energized by closure of contact 4 of relay s2 after its set time has expired. The coil-armatures of valves c, f can be manually operated, or the coils can be energized by closing contacts 11, 13, respectively, of a manual switch k. In the closing operation, a valve c, which has a maintaining contact p, admits air beneath the piston b, the valve-circuit being broken at a relay d which is unlatched by the closing movement of the contact z2 and by holding the switch open prevents hunting when automatic tripping follows switching on a short-circuit. A slow-return relay r energized at every switching-on, breaks the energizing circuit of valve q for a little longer interval than the time of operation of relay m, so preventing an immediate reclosure both after manual closing on to a short-circuit and after retarded reclosure by relay s2. The invention is also stated to be applicable to an arrangement comprising a power-switch and series disconnectswitch.
Patent GB-1042175-A (GB)
Title: Electronic power circuit arrangement
IPC: H02P7/34
Filed: 1963-07-10
Abstract: 1,042,175. Automatic control of dynamoelectric machines. LICENTIA PATENT-VERWALTUNGS-G. m. b. H. July 10, 1963 [July 10, 1962], No. 27416/63. Heading G3R. [Also in Division H2] The field winding 11 of a generator 1 is supplied from battery 2 and rectifier 3, the winding being connected in a bridge circuit comprising diodes 5, 6 and controlled semi-conductors 7, 8. When the devices 7, 8 are blocked, the field winding discharges through the battery. A signal representing the voltage-drop across resistor 10 is supplied to regulator 9 which also receives a signal representing the difference between a reference voltage and the generator voltage. A load resistor 14 is connected across the battery in the event of excess voltage. In a Ward Leonard system, the generator field winding 11 and motor field winding 21 are supplied from rectifier 3, the members 5-8 being duplicated for reverse control. The members 7, 8, are rendered non-conductive and conductive at high and low values of the current in the winding 11. When reversing, the members 7<SP>1</SP>, 8<SP>1</SP>, are not switched-on until the winding 11 has discharged. A signal derived from resistor 22 limits the armature current of the motor 23. Speed control, involving the use of a tachometer generator, may also be provided. The protective resistor 14 may be associated with triode 15 having quenching circuit 16, 17. The members 7, 8 and 7<SP>1</SP>, 8<SP>1</SP>, also have capacitive quenching circuits. Reactors 30, 31, and 30<SP>1</SP>, 31<SP>1</SP> prevent short-circuiting of the quenching devices. Resistors 25-28 may replace the reactors.
Patent GB-758368-A (GB)
Title: Process for protecting the joints of metal pipes coated with multi-layer protecting thermoplastic coverings
IPC: F16L13/02
Filed: 1953-10-06
Abstract: 758,368. Protecting pipe joints; composite pipes. S. A. S. LAVORAZIONE MATERIE PLASTICHE (L.M.P.) DI M. 1. COLOMBO & CO. Oct. 6, 1953 [Oct. 8, 1952], No. 27422/53. Classes 99(1) and 99(2). In a welded joint for metallic pipes 1, 1<SP>1</SP> covered with layers 2, 3 and 21, 3<SP>1</SP> of thermoplastic material, the coverings at the ends of the pipes and adjacent the welding line S are removed and replaced by a multi-layer sleeve of the same material as that of the coverings, the layers 2<SP>11</SP>, 3<SP>11</SP> of the sleeve being successively welded to the layers of the coverings. As shown, portions of the layers 2, 2<SP>1</SP> and 3, 3<SP>1</SP> damaged during the welding of the pipes are removed to the points A, B and C, D. The sleeve which is fitted on one pipe section prior to welding of the pipes is disassembled and each layer of the sleeve is cut to length and along a generatrix and trimmed to fit between the points A ... D. A metal collar connected to a source of electric current is arranged around the sleeve for welding the sleeve and coverings together. In an alternative arrangement the sleeve is formed by winding plates of thermoplastic material around the pipes. Specification 758,367 [Group III] is referred to.
Patent GB-408266-A (GB)
Title: Control valve for automatic compressed air single-train pipe brakes for vehicles
IPC: B60T15/18
Filed: 1932-10-03
Abstract: 408,266. Fluid - pressure brakes. SCHAWGULIDZE, E. A., 20, Ul. Urizkogo, Kutais, U.S.S.R. Oct. 3, 1932, No. 27455. [Class 103 (i).] In a control valve for a compressed air brake comprising a differential piston 5, 6 subject to the pressures (1) of a control chamber C; (2) of the train pipe in connected chambers M ; and (3) of the brake cylinder B in a chamber T, the control chamber pressure is adjusted during changing and release by the differential piston and during braking by a regulator 31. In charging, the train pipe L feeds the chambers M by a leak groove 1 past a piston 2, the pistons 5, 6 are forced to the right and the chamber C is fed through connection 17 until the pressure in this chamber moves the pistons back to close this connection by a slide valve 7. The pressure in chamber C is kept at the same value relative to the value of the train pipe pressure by movement of the pistons 5, 6 and slide valve 7 which either opens connection 17 or an atmospheric connection 8, 9, 18. Sudden fall of train pipe pressure on brake application causes the piston 2 to move to the left, moving a slide valve 4 to connect chambers M to the brake cylinder B. The consequent fall of pressure in the chambers M brings about a movement of the pistons 5, 6 and valve 7 to the left to close the brake cylinder B from exhaust 18 and connect it by passages 12, 11 to the auxiliary reservoir R. When the fall of train pipe pressure ceases piston 2 returns to the right and the pressure in chamber M equalises with train pipe pressure through the groove 1 and brake cylinder pressure acting in chamber T returns the valve 7 to lap position at each stage. Movement of the valve 7 to braking positions opens a passage 15 to the chamber M and a passage 19 to exhaust outlet 13. Passages 15, 19 lead to the regulator 31, and any variation of pressure in the chambers C during braking opens these chambers either to the chambers M or exhaust 13 by movement of piston 21 and slide valve 25 of the regulator 31, in order to maintain this pressure constant. The valve 25 moves on a valve 29 which has lost motion relative to the rod of the piston 21. When charging, the pressure in chambers C, moves the piston 21 against the pressure of a spring 20 and moves the valve 29 to connect passages 15, 19 to recesses 24, 28 respectively.
Patent GB-861742-A (GB)
Title: Improvements in or relating to venetian blinds
IPC: E06B9/306
Filed: 1958-08-27
Abstract: 861,742. Venetian blinds. GUNN, F. W. June 23, 1959 [Aug. 27, 1958], No. 27512/58. Class 20(3) The top member 3 of a venetian blind is a box along the interior of which run the raising and lowering cords 4 and is provided with end caps 8 pivotally mounted in brackets 9 to constitute the tilting mechanism of the slats, the caps 8 and brackets 9 having mutually cooperating protuberances and depressions 13, 14 so as to retain the blind in a plurality of tilted. positions. End caps 17 on the bottom member 5 of the blind are detachably engaged by bottom brackets 15 to permit tilting movement only of the blind.
Patent GB-228966-A (GB)
Title: Improvements in and relating to vehicle brakes
IPC: B62L5/00
Filed: 1924-01-19
Abstract: 228,966. Ferguson, R., Ferguson, R., and Ferguson, J. J. Jan. 19, 1024. Brake mechanism.-A brake which on bicycles is adapted to be applied by back-pedalling comprises a cam, secured centrally to a rotating part such as the crank axle or a road wheel, and a two-armed rocking lever which is engaged by the cam in both directions of rotation; for one direction this lever rocks idly, whereas for the other direction, through the medium of its outer arm it communicates motion to an arm operatively connected with the brake. As shown in Fig. 1, the cam A, secured on a bicycle crank axle, actuated the rocking lever B mounted by a bracket F upon a chain stay. The rocking lever is mounted freely on a shaft D to which are secured an intermediate lever C and the brakeoperating arm E, the lever C having a stop H which, for application of the brake, is engaged by the outer end of the lever B. A cable K<1> and hand-lever K provide means whereby the rocking lever can be held clear of the cam when it is desired to wheel the machine backwards-