baber/WOPTO huggingface dataset:
Patent GB-1514360-A (GB)
Title: Solar collector having selective film of stability to liquid water condensate
IPC: F24S10/75
Filed: 1976-07-27
Abstract: 1514360 Solar collectors ENTHONE Inc 27 July 1976 [30 July 1975] 31294/76 Heading F4U A solar collector comprises a base plate 11 of copper or copper alloy which is coated with a selective, solar heat energy adsorptive layer 12 rendered stable to contact with liquids over an extended period by contact with a chromic acid solution. The layer 12 is stipulated as having high solar adsorptivity of at least 0À9 and a poor emissivity under 0À2. The layer may be a black copper oxide film formed by contacting the plate with a hot aqueous solution of an oxidizing agent, an alkali and an aqueous liquid. A blackening solution may be used alternatively, of concentrates of sodium hydroxide and sodium chlorite in water. The chromic acid solution comprises an alkali phosphate, chromic anhydride and an aqueous liquid. Copper tubes 15 for passage of a fluid to be heated may be secured to the layer or beneath the plate 11, which tubes are also treated as above on their exposed surfaces. A spaced transparent sheet 16 and insulating material, e.g. multicellular polystyrene, are utilized in the collector.
Patent GB-1078536-A (GB)
Title: Improvements relating to corundum powder
IPC: C01F7/023
Filed: 1964-08-04
Abstract: A microcrystalline a -Al2O3 powder having crystallites of less than 160 mm , a surface area of greater than 10m2/gm., and a packed density of at least 2 gm/c.c. at 10 tons/inch2, is obtained by ballmilling coarse a -Al2O3, then, in either order, (a) extracting all materials other than a -Al2O3 with aqueous HF, and contacting with a base, and (b) peptizing the particles of the required size, and separating off the larger particles.  The final a -Al2O3 may contain 0.01-3% of metal oxides, e.g. Cr2O3, Ti2O3\t and Fe2O3, which form solid solutions with Al2O3.  The coarse a -Al2O3 used may be macrocrystalline a -Al2O3 which is first crushed to particles of size 1-100m , or it may be obtained by heating another form of alumina in the presence of SiO2 at 1150-1250 DEG  C.  Other forms are colloidal boehemite, fine g -Al2O3, e.g. from burning AlCl3, Al(OH)3 precipitated from Al(NO3)3 with NH3, and Al2O3 from pyrolysis of Al acetate; this alumina is mixed with 1-2.5% SiO2, e.g. by impregnating with ethyl orthosilicate, which is hydrolysed in situ, or by mixing a colloidal suspension with a 1% SiO2 sol, gelling with NH4OH and heating to remove NH3. Milling of the coarse a -Al2O3 may be carried out in rotary or vibrating mills using steel balls in water or ethylene glycol. The Al2O3 may then be purified with 10-20% HCl.  The HF treatment, with 5-50% acid, is continued until less than 1% of soluble material remains and the Al2O3 is then contacted with the base, e.g. NH4OH or tetramethyl ammonium hydroxide, and washed. Peptization may be effected with (a) HCl to a pH of 3, (b) Na pyrophosphate, polymetaphosphate, silicate or lignosulphonate or the Na salt of EDTA, or (c) proteins or fish glue.  Larger particles are separated by sedimentation or fractional centrifugation.  The dilute Al2O3 sol may be concentrated by flocculating with NH3 and acidifying the slurry with HCl to pH3, or by centrifuging or water evaporation. It may be purified by ion exchange.  Powdered Al2O3 is obtained by flocculating with ammonium carbonate or bicarbonate and drying, or by evaporation.  Dense bodies of Al2O3 can be obtained by moulding the powder at 4000 p.s.i. and 1500 DEG  C.  An organosol may be obtained by mixing a 5% aqueous sol with chloroform in the presence of ammonium myristate or orthotoluic acid, then adding a hydrocarbon, e.g. xylene and distilling off the chloroform.
Patent GB-699697-A (GB)
Title: Improvements relating to a process for the manufacture of medical plaster articles
IPC: A61F13/04
Filed: 1950-12-27
Abstract: In a process for the manufacture of plaster articles e.g bandages, dressings, splints &c. a paste of finely ground gypsum is spread on a support e.g. gauze and subjected to such temperature conditions that a mixture of plaster, semi-hydrated sulphate and unaltered gypsum results.  The desired temperature conditions may be produced by infra-red rays.  Polyvinyl alcohol may be added to the paste to assist uniform spreading, to act, after drying, as an agglutinant for holding the plaster on the support and to ensure rapid absorption of water when the plaster is prepared for use.  The support may be made of synthetic plastic which is water resistant e.g. vinylic resins or their derivatives, condensation products of polyamides or polyacids, polyfluorethylenes &c.
Patent GB-539146-A (GB)
Title: Improvements in and relating to electromagnetically-operated switches, particularly for controlling motors
IPC: H01H43/28
Filed: 1939-12-04
Abstract: 539,146. Dash-pots. POLLAK, J. E. (Vapor Car Heating Co., Inc.). Dec. 4, 1939, No. 31465. [Class 108 (iii)] [Also in Group XXXVII] An electromagnetically operated switch device, particularly adapted for cutting out resistances in the circuit of a motor controlling the flow of fuel to a furnace of a steam generating plant and responsive also to the pressure of the steam, comprises a lever 14 pivoted at 15 and operable by the electromagnet 50 against the action of a spring 18, the lever 14 carrying a series of contact arms 36 adapted to make successive engagement with contacts 8. The arms 36 are mounted between springs 41, 42 and a quick " make " and " break " is provided by a series of permanent magnets 13. In the form shown, the magnet 50 attracts upwards a movable core 56 which is restrained by a dash-pot and which lifts a rod 25 engaging the lever 14. De-energization of the magnet causes the reverse process but a ball valve 62 in the dash-pot piston allows a quick opening of the circuits. The circuits may also be opened when the electromagnet is energized by excess of steam pressure acting on a diaphragm 72 and raising a rod 31 against adjustable springs 83, 84. The rod 31 engages the upper contact-carrying portion 33 of the lever 14 which can pivot relatively to the lever 14 about the axis 15 against the action of a spring 28. In a modification, Fig. 8 (not shown), there is no relative movement between parts 33 and 14, but the steam pressure rocks the whole lever about the axis 15, this being possible because the rod 25 passes through the movable core and is connected to it by a spring. In this modification, energization of the magnet causes the core to move at once to its final position, straining the spring which then slowly moves the dash-pot piston, the rod 25 and lever 14. The dash-pot piston in addition to having a ball valve 62 has apertures 71 which may be closed by a rotatable plate 67 to vary the retardation, and in a modified form Fig. 8 (not shown), the cylinder may have tapered sides to allow greater amount of fluid to slip by the piston as it rises thereby compensating for the weakening of the spring and causing a uniform speed.
Patent GB-205371-A (GB)
Title: Improvements relating to bearings
IPC: F16C17/03
Filed: 1922-11-18
Abstract: 205,371. Baumann, K., and Metropolitan-Vickers Electrical Co., Ltd. Nov. 18, 1922. Bushes and linings.- In a journal or other bearing provided with an antifriction lining, a number of tiltable shoes having a higher melting point than the antifriction material are embedded within the antifriction material so as to take the load in the event of fusion of the antifriction lining. The shoes may be arranged with their faces either coincident with or below the surface of the antifriction material. As applied to a journal bearing, rounded lugs 5 on the shoes 4 embedded in the antifriction lining 6 engage longitudinal recesses 7 in the housing 1. In a modification, the lugs on the shoes engage in a circumferential recess in the housing, displacement of the shoes being prevented by fixed stops.
Patent GB-485618-A (GB)
Title: Improvements in or relating to electric wave filters
IPC: H03H1/00
Filed: 1936-11-18
Abstract: 485,618. Impedance networks. CORK, E. C., and PAWSEY, J. L. Nov. 18, 1936, No. 31604. [Class 40 (iii)] In a network, at least one reactance is tuned by virtue of the length of wire employed, and all the reactances are individually shielded, the shields 13, 14, 15 being connected together as by a junction box 15a to form a unitary structure. The invention is applied to a low-pass filter for eliminating very high frequencies and comprising a T-network with series inductances 9, 10 tuned by their length and a shunt series tuned circuit 11, 12. Specifications 442,537 and 453,842 are referred to.
Patent GB-1301820-A (GB)
IPC: C07F1/00
Filed: 1970-01-20
Abstract: 1301820 Preparation of methoxynaphthylpropionic acid and intermediates therefor SYNTEX CORP 20 Jan 1970 [30 Sept 1969] 31639/72 Divided out of 1300591 Heading C2C 2 - (6-Methoxy- 2-naphthyl)propionic acid is prepared by reacting a compound I  wherein M is MgCl, MgBr, MgI, Li, Na, K, Zn/2 or Cd/2, with CO 2 ethyl orthocarbonate or ethyl chloroformate, and treating the mixture with acid and optionally resolving a dl-mixture thus formed. Compounds I are claimed per se and are prepared (a) by reacting 1-bromo-1-(6-methoxy-2- naphthyl)-ethane with Mg, Li or Zn to give I where M is MgBr, Li or Zn/2, or (b) reacting the product of (a) with CdCl 2 ,Na or K to give I where M is Cd/2, Na or K.  Pharmaceutical compositions comprising 2- (6 methoxy- 2-napthyl)propionic acid when prepared as above, together with a suitable excipient are used in treating inflammation, pain and pyrexia.
Patent GB-445252-A (GB)
Title: Improvements in or relating to the reception of radiated power
IPC: H01F21/06
Filed: 1934-06-27
Abstract: 445,252. Inductances; wireless receiving-apparatus. BROWN, S. G., 64, North Gate, Regent's Park, London. June 27, 1934, Nos. 31666/35 (divided out of 444,951) and 31667 /35 (divided application). [Class 37] [See also Group XL] The aerial circuit and any subsequent stage of a wireless receiver contains a series of two or more tuning coil units each having the fixed capacitance requisite for tuning and each coil inductance is varied by an adjustable magnetic core. Small trimming condensers may be associated with each coil. Preferably the requisite capacitance for tuning is inherent in the coils. The coil units are screened. Half or any multiple of half wave tuning is employed. For instance in halfwave tuning the coils are combined into a single winding, for full wave tuning the two coils are separate and for double-wave tuning four coils are used in each circuit, and so on. Separate sets of the above coil units are employed for different wave-ranges. The winding or sets of coils may have each coil unit shunted by a fixed capacitance. In one arrangement, Fig. 5, aerial coils 30 ... 33 provided with inherent capacitance are connected through a high-frequency valve 25 to a first-stage amplification unit comprising double-laver coils 34..37 with reaction coupling 19, 20. Another arrangement, Fig. 6, shows four three-layer coils 38 ... 41, two coils in each circuit. The nodal points of each coil may be directly connected, or connected through capacitances. Voltage antinodes may be directly connected and earthed. Fig. 7 shows a wave-range switching set. Aerial coils 30 ... 33, 38, 39 have their cores 8 on a common bar 42, and first-stage amplification coils 34 ... 37, 40, 41 have cores 8 on a common bar 43, reaction coils 19, 20 being provided. The coils are mounted on blocks to which slight lateral adjustment can be given. The bars 42, 43 are connected to racks 44, 45 gearing with pinion 46, and fine adjustment is effected by a further toothed or friction gear (not shown). Switching is effected by a bar 62 operated through an eccentric pin 65 from knob 63, studs 67 contacting electrically with sets of spring fingers 69 or 70. In another arrangement, all of the cores are mounted on a single rigid structure for simultaneous adjustment with respect to three sets of coils. Specifications 421,564, 429,826, and 444,951 are referred to.
Patent GB-792227-A (GB)
Title: Improvements in and relating to mills
Inventor: FLINT PHILIP ARTHUR LEICESTER
IPC: B02C7/175
Filed: 1954-11-02
Abstract: <PICT:0792227/III/1> In a colloid mill in which material is fed to a narrow annular gap between a rotor and stator, the path for the material is divided into a number of abrasive milling zones spaced apart in the path of the material by vibration milling zones, the abrasive zones being formed by pairs of abrasive members mounted on the rotor and stator and the vibration zones being formed by toothed surfaces on the rotor co-operating with toothed surfaces in the stator to mill the material by subjecting it to high-frequency vibrations.  As shown, abrasive grinding members 28 in slots in a stator 22 co-operate with similar grinding members in slots in a rotor 32 and the lands 26 between the slots are formed with radial or skewed teeth 30 to provide vibration milling zones.  The co-operating surfaces of the grinding members 28 may be bevelled upwardly and outwardly.  The stator is cooled by a liquid medium. The milling stages may be preceded by a vibration milling stage comprising toothed stator rings 41, 42, 43 and co-operating toothed rotor rings 48, 50, 52.  The rings in this stage may be cylindrical.  The spacing of the teeth round the rotor and stator is progressively reduced in successive vibration milling zones. The stator is adjustable relatively to the rotor by means of a hand-operated worm gear 72 which engages teeth on the outside of a ring 70 connected to the stator.  The material entering the mill may be initially broken up by means of a rotary cutter 54.  The mill can be used inter alia for making emulsions, dispersions and suspensions, and for homogenizing and pulverizing.
Patent GB-1154175-A (GB)
Title: Improvements in or relating to Crate Inverting means for use with Crate Washing Machines
Inventor: DAVIES ALAN JAMES
IPC: B08B9/08
Filed: 1966-10-26
Abstract: 1,154,175. Emptying crates whilst on conveyers. BOUCHER-GILES & CO. Ltd. 26 Oct., 1967 [26 Oct., 1966; 11 July, 1967], Nos. 48003/66 and 31742/67. Headings B8A and B8E. Crates which are to be emptied of rubbish before passing through a washing machine are inverted by a device 15 comprising discs 17 mounted on a shaft 16, there being a common drive for the shaft and for conveyer chains 12. The inner surface of each disc 17 carries angle members 19 which provide four L-shaped flanges for supporting the crates. For locating the crates, there is associated with each flange a peg 23 but which, by a cam 30, a roller 29 and parallel linkage 25 (Fig. 2), is retractable from the side of a crate. A movable stop 32 ensures that a crate 18 is fed to the device 15 for each 90 degrees rotation of the latter. As the crate engages a pair of the L-shaped flanges, rotation of the device 15 causes the roller 29 of these flanges to disengage from their cams 30 and the pegs 23 move inwardly to engage over the top 36 of the crate under the action of springs 31 acting on the linkage 25. When the crate has been transported through 90 degrees, a further crate is fed on to the next pair of L-shaped flanges and the sequence continues. After the first crate has rotated through a further 90 degrees, i.e. is inverted, the pegs 23 are disengaged from the crate which is now deposited on the conveyer.
Patent GB-142440-A (GB)
Title: Apparatus for beating furs and other articles
IPC: D06G1/00
Filed: 1919-12-18
Abstract: 142,440. Lebel, A. April 25, 1919, [Convention date]. Furs &c., beating.-A machine for beating furs and other articles comprises a power-driven camshaft b mounted in a casing a with a pivoted lid i, the cams c serving successively to depress the inner ends of beater levers d pivoted on a crossshaft e and pulled downwards by springs f after passing the tops of the cams. As the cams depress the inner ends of the levers, the outer ends are slowly raised, the return motion under the action of the springs being rapid so as to effect a beating action upon furs &c., placed on a preferably resilient support under the beaters. Rubber mounts are placed on the levers to obviate noise caused by impact with the edges of the slots or openings g in the casing. Balls or rollers are provided in the ends d' of the levers to minimize friction. The beaters h are secured in sleeves or bushes d<11> on the levers d.
Patent GB-918464-A (GB)
Title: Stabilised polyolefine compositions and their production
IPC: C07C49/84
Filed: 1959-09-18
Abstract: Normally-solid polyolefins are made resistant to discoloration by ultra-violet light by incorporating therein 0,0005 to 1% by weight of an etherified polhydroxy benzophenone of the structure <FORM:0918464/IV(a)/1> in which R is an alkyl or aryl group containing from 8 to 23 carbon atoms.  An anti-oxidant heat stabilizer may also be added. The compositions may be prepared by working the polyolefine and the adjuvants on a rubber mill at a temperature between 140 DEG  and 170 DEG C.; or by dissolving the adjuvants in acetone, hexane or benzene, and spraying the solution in a mixer containing the polyolefine.  Results of accelerated weathering tests carried out on polyethylene and polypropylene films are given, in which use is made of the following U.V. stabilizers:- the 4-octyl-, -decyl-, -dodecyl-, -hexadecyl-, and -betaphenylethylmono ethers of 2,4-dihydroxy benzophenone, and also 2,21-dihydroxy-4,41-dioctyldecyloxy benzophenone, 2,21-dihydroxy-4-methoxy-41-ethoxy benzophenone, and 2,21-dihydroxy-4-methoxy benzophenone.  Among the antioxidants referred to are:- 4,41-thiobis(6-t-butyl-m-cresol), 2,21-methylenebis(4-methyl-6-t-butylphenol) and N-(p-hydroxyphenyl)-morpholine.  Specifications 639,306 and 682,420 are referred to.  Reference has been directed by the Comptroller to Specification 726,792.ALSO:The invention relates to compositions comprising mono - etherified dihydroxybenzophenones having the general formula <FORM:0918464/IV (b)/1> wherein R is an alkyl or aryl group containing from 8 to 20 carbon atoms.  The preparation of 2-hydroxy-4n-octyloxybenzophenone, by refluxing a mixture of 2,4-dihydroxybenzophenone, 1 - bromo - octane, potassium carbonate and acetone, is described. 2-Hydroxy-4n-dodecyloxybenzophenone may be prepared by a similar process.  The compounds have use in stabilizing solid polyolefines against ultra-violet light (see Group IV(a)). Specifications 639,306 and 682,420 are referred to.  Reference has been directed by the Comptroller to Specification 726,792.
Patent GB-160528-A (GB)
Title: Improvements in stiffeners for maintaining the original contour of soft felt hats and the like
IPC: A42B1/00
Filed: 1919-12-19
Abstract: 160,528. Brooke, A. Swainson-. Dec. 19, 1919. Stiffeners.-A stiffener for soft felt hats &c. comprises a band A of resilient material adapted to extend completely around the inside of the hat, and provided at intervals with downwardly extending supports B and with upwardly extending branch springs a'. The ends of the band are provided with fastening-means for peripheral adjustment, that shown comprising a clip, Fig. 3, the ends c' of which are passed through slots a<2>, a<3> in the band and bent inwards, triangular portions c<2> of the ends being bent outwards. The stiffener may be of celluloid or thin metal.
Patent GB-1008706-A (GB)
Title: Improvements in reciprocating pumps for dispensing liquid or semi-liquid substances
Inventor: CAMPBELL DAVID ALAN
IPC: F04B9/14
Filed: 1963-08-13
Abstract: 1,008,706. Reciprocating dispensing pumps. HORTON MANUFACTURING CO. Ltd. July 29, 1964 [Aug. 13, 1963], No. 31895/63. Addition to 937,504. Heading F1A. A dispensing pump according to the parent specification is modified in that the hinged annular valve on the plunger is replaced by a cup washer 1 mounted with freedom of axial movement on a carrier member 2 so that an inward movement of the plunger the washer seats on a face 6 to close the inlet passages L while permitting flow from the cylinder via passages 3, 4, H, H to the plunger passage G, and on the outward movement of the plunger the washer leaves the seat 6 to permit inflow into the cylinder from the port K via the passages 3, 4.
Patent GB-1430450-A (GB)
Title: Chemical compositions
IPC: A01N25/12
Filed: 1973-07-04
Abstract: 1430450 Herbicidal composition CIBAGEIGY AG 4 July 1974 [4 July 1973] 31928/73 Heading A5E A herbicidal composition for aquatic weed control comprises a granular carrier which is impregnated with at least 0.1% by wt of terbutryne as sole herbicidal agent based on the weight of the carrier, wherein the particle size of the carrier is such that substantially all the particles are in the range 22-60 mesh (710- 250Á). The proportion of terbutryne in the composition is preferably 0.1-10% by wt. The preferred carrier is calcined Fullers Earth granules. Additives may include emulsifying agents, wetting agents and dispersing agents.
Patent GB-262946-A (GB)
Title: Improvements in or connected with sawing machines
IPC: B27B5/18
Filed: 1925-12-18
Abstract: 262,946. Cole, W. L. Dec. 18, 1925. Circular-saw machines. -In a machine for sawing planks into blocks by a set of reciprocating saws, the plank 58 is fed on to a shelf against a rear fence 29 held by a set of arms 28, and a. cam 50 on the main shaft 34 adjusts a spring end-stop 37 by moving a wedge piece 41. A set of spring fingers 27 is next depressed by the action of a cam 60 to grip the plank, and the rear fence 29 is withdrawn by a cam 33. The sliding bearings 2 holding the saw shaft are now advanced by means of a cam slot 16 in a disc 7, and in order to adjust the stroke of the saws the lever 11 actuated directly by the cam is loose on a countershaft 6 on which is keyed the actuating-lever 5, and is connected by a worm and sector 12 with a second lever 8 keved on the shaft 6. After the cut the spring fingers are withdrawn, to allow the cut blocks to fall, and the rear fence 29 is returned ready for the next plank to be fed. The hub plates on one side of each saw are screw threaded to permit small adjustments of distance. To provide for considerable variations in gauge, the tops 2a of the bearings. 2 are removable, so that the whole set of saws can be removed and replaced by a set of different gauge.
Patent GB-510584-A (GB)
Title: Improvements in or relating to blowpipes or torches
IPC: F23D14/46
Filed: 1938-11-04
Abstract: 510,584. Blowpipe burners. STEWART, J. G. Nov. 4, 1938, No. 32043. [Class 75 (i)] Oxygen admitted through a port 10 controlled by a hand-operated valve 12 from a supply passage 6 'to a cylindrical chamber 11 in a member 5 acts on one side of a piston 21 to regulate the admission of acetylene, hydrogen or other fuel gas from a supply passage 27 past a valve 32 to the other side of the piston. The oxygen is conveyed 'through a pipe 4 and the fuel gas, at substantially equal pressure, through a passage 37 in the member 5 and a pipe 3 to the heating gas orifices in a head-piece 36 fitted with a standard burner nozzle. Oxygen for cutting purposes is supplied to the head piece 36 from the passage 6 through a pipe 2 fitted with a hand-adjusted ball valve 45. The valve 32 is formed with a stem 30 which is slidable in a partition 28 in the gas passage 27 and carries an abutment 31 engaging an abutment 25 on the piston 21. The movement of the piston 21 is limited by a stop 28a. Adjustable orifices for varying the size of the flame may be provided in the pipes 3, 4. In a modification a diaphragm is substituted for the piston 21.
Patent GB-922561-A (GB)
Title: Improvements in and relating to spin dryers
Inventor: FLOYD GERALD WILLIAM
IPC: D06F49/08
Filed: 1958-10-08
Abstract: 922,561. Spin-driers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 31, 1959 [Oct. 8, 1958], No. 32137/58. Class 34 (2). A spin-drier having a stationary pipe 8 with its mouth 8a directed oppositely to the direction of rotation of the drum 2 whereby drum rotation substantially empties the drier and thus avoids the necessity to drain the main part of the liquid out of the drier after the drying operation. The pipe 8 connects to a flexible hose 11 so that the drier may be arranged to empty into sinks of varying height.