baber/WOPTO huggingface dataset:
Patent GB-775460-A (GB)
Title: Improvements in or relating to drying oil fatty acid esters of polyalcohols
IPC: C08G8/28
Filed: 1955-08-09
Abstract: An esterification product of (1) the reaction product of (a) a phenol-formaldehyde novolak containing from 4 to 10 phenolic groups per molecule, at least half of the phenolic constituents of the condensate comprising phenol (C6H5OH), with (6) from 0.85 to 1.2 mol. for each phenolic nucleus of ethylene and/or propylene oxide, esterified with (2) carboxylic acids in amount to provide from 0.1 to 1.0 carboxyl groups per alcoholic hydroxyl of said oxyalkylated product, at least 60 per cent of the carboxyl groups being supplied by drying oil fatty acids.  The novolak is preferably derived from phenol though up to 50 per cent of difunctional phenols, e.g. ortho- and parahydrocarbon and halogen substituted phenols may be present. Specified acids are the monomeric acids derived by the saponification of drying or semi-drying oils, e.g. linseed oil fatty acid, tall oil acids, soya oil acids and dehydrated castor oil acids and which may contain minor proportions of dicarboxylic acids and anhydrides, e.g. phthalic acids, succinic acid, maleic anhydride and dimeric drying oil acids.  In the examples, phenol-formaldehyde novolaks were reacted with (1) and (2) ethylene oxide, the products being esterified with linseed oil fatty acids, (3) (A) ethylene oxide, (B), (C) and (D) propylene oxide, the products being esterified with linseed oil fatty acids, tall oil acids, dehydrated castor oil acid or soya oil acids.  Further examples describe the use of novolaks derived from cresol and phenol, p-tertiary butyl phenol mixtures and mixtures of the specified monomeric acids with dimeric drying oil acids or phthalic anhydride.  In Example (11), the soya fatty acid ester of the polyalcohol derived from phenol formaldehyde novolak and ethylene oxide is polymerized with vinyl toluene in the presence of di-tertiary butyl peroxide.  The products of the invention may be blended with other resins, e.g. ureaformaldehyde resins, solvents, e.g. xylene, butanol, pigments, e.g. titanium dioxide and lamp black and lead and cobalt driers, and used as varnishes.  Specifications 775,459 and 775,461 are referred to.
Patent GB-1185214-A (GB)
Title: Abrasive Scouring Cleansers
IPC: C11D17/00
Filed: 1967-05-17
Abstract: 1,185,214. Abrasive scouring cleanser. COLGATE-PALMOLIVE CO. 17 May, 1967 [18 May, 1966], No. 22967/67. Heading C5D. An abrasive scouring cleanser composition in the form of a dry powder comprises at least 60% of a water-insoluble inorganic siliceous abrasive material having a particle size of less than 0-5 mm., 0À1-20% of an alkali metal monopersulphate, 0À5-15% of a water-soluble organic detergent stable in the presence of the monopersulphate and 0À1-10% of a watersoluble inorganic bromide. Suitably the alkali metal monopersulphate is the potassium or sodium salt or the triple salt 2KH50 5 , KHSO 4 , K 2 50 4  and the bromide is the sodium, potassium, lithium, magnesium or strontium salt. Suitable organic detergents are anionic, cationic, amphoteric or non-ionic in character and examples of each class are given. The abrasive material may be silica, feldspar, pumice, volcanic ash, diatomaceous earth, bentonite, talc or mixtures thereof. The cleanser composition may contain additional ingredients such as inorganic builder salts, sequestering agents (e.g. nitrilotriacetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine penta-acetic acid and their salts), fillers (e.g. wood pulp, sawdust, magnesite or whiting), sodium carboxymethylcellulose, anticaking agents and optical brighteners.
Patent GB-358630-A (GB)
Title: Improvements in and relating to wrist watch straps
IPC: A44C5/16
Filed: 1930-07-30
Abstract: 358,630. Attaching watches to wrist. BLACKLOCK, R. A., HUNTER, A. D., and BLACKLOCK, A., Back Hylton Road, Sunderland. July 30, 1930, No. 22985. [Class 43.] In wrist-watch straps wherein two strap members are adapted to be secured to a watch by passing one end of each through one of two bows, folding the ends back, and securing by tongs C<1> projecting from a tang member C in the strap member, the end which goes around the bow is laterally recessed forming a tongue A<1> of calix-shape, so as to receive the upwardly projecting tangs C<1> which are then bent over to grip the strap end. The tang member C is preferably secured on the inner side of the strap and may be of cruciform shape, the tangs C<1> forming the cross member, the other ends being passed through transverse slits A2, A3 in the strap. Alternatively the tang member may be a plain strip, the ends of which are passed through longitudinal slits in the strap and bent over to grip. The strap may be formed of two superposed thicknesses A, B, the laterally recessed end A<1> being adapted to enter a recess B<1> in the thickness B and be secured by the tangs C<1> with or without the addition of adhesive. Each thickness A, B may be formed of two layers, the slits being in the inner layer of the thickness A so that the tang member is invisible from the outside. Specification 336,143, [Class 43, Fastenings, Dress], is referred to.
Patent GB-912761-A (GB)
Title: An improved hoe
IPC: A01G1/12
Filed: 1960-07-01
Abstract: 912,761. Garden hoes. WILSON, W. June 30, 1961 [July 1, 1960], No. 23051/60. Class 6(2). A garden hoe comprises a double-edged blade 16 carried by a support member 11, 12 secured to a shaft 10 so as to pivot about a pin 14, movement of the support member being limited by a pin 13 contacting the ends of an arcuate slot 15 cut in the part 11 of the support member. The blade may comprise two cutting members bolted to the support member so as to extend laterally from opposite sides of the support and lie in the same plane.
Patent GB-797885-A (GB)
Title: Improvements in or relating to extensible ladders
Inventor: NURSE EDWARD VICTOR
IPC: E06C1/22
Filed: 1953-08-21
Abstract: 797,885. Extending ladders. MILES, Ltd., A. Aug. 23, 1954 [Aug. 21, 1953], No. 23069/53. Class 20(2) An extensible ladder comprises an erecting stand 15 in the form of a guide with which a plurality of similar ladder sections may be engaged one after the other, the stand 15 having winding gear operable to project the first ladder section 10 from the stand and there to retain it whilst the next succeeding ladder section 11 is engaged with the stand 15 and is projected by the winding gear to cause it to engage endwise with the first ladder section 10 by plug and socket connections after which further operation of the winding gear effects further projection of the ladder sections in the form of a continuous ladder. The stand 15 consists of a pair of channels 16 connected together at their lower ends by a shoe 18, with their open sides facing each other and with adjustable struts 19 pivoted to their upper ends and connected to their lower ends by the rods 20. Rounds 17 are secured to the back webs of the channels 16 to constitute the lowermost part of the ladder and the major portion of the front webs of the channels 20 are cut away to enable one of the ladder sections to be engaged therewith. The winding gear consists of an endless chain 24 passing over an upper sprocket 22 and a lower sprocket 23 having an operating handle 25, the chain carrying a series of hooks 26 which engage the rounds 27 of a ladder section positioned in the stand 15. At the upper end of the stand a manually releasable gravity or spring loaded pawl 28 engages a round of a projected ladder section to retain that section in projected position. Each of the sockets 14, Fig. 5, at the lower ends of the strings of the ladder sections contain a blade spring 35 which engages a shoulder 32 on the plug 13 at the upper end of the next lower ladder section whereby the sections are automatically locked together. To allow automatic release of this locking means when the winding gear is operated to lower the ladder sections, the socket 14 is provided with a release catch 36 which, is operated by a ramp 40 in the inner surface of each channel 16 of the stand 15.
Patent GB-1062902-A (GB)
Title: Improvements in and relating to controlling the flow of powder from a hopper
Inventor: CLAPHAM WILFRED HENRY
IPC: B65D88/68
Filed: 1964-06-04
Abstract: 1,062,902. Agitator for hoppers. CHEMICAL & INSULATING CO. Ltd. June 4, 1965 [June 4, 1964], No. 23145/64. Heading B8S. Magnesium oxide in hopper 2 is discharged through discharge opening 50 by the operation of shaft 1 which is oscillated by handle 51. Alternatively, it may be driven by a motor.
Patent GB-923153-A (GB)
Title: Semiconductor strain gauge
IPC: H01L29/84
Filed: 1961-06-27
Abstract: 923,153. Measuring electrically. FAIRCHILD SEMICONDUCTOR CORPORATION. June 27, 1961 [Aug. 18, 1960], No. 23175/61. Class 40 (1). [Also in Group XXXVI] A strain gauge comprises a wafer of semiconductor material suitable for mounting upon a test member, at least one strip in the wafer being doped and provided with spaced contacts so that it may be connected in a measuring circuit to indicate variations in the resistance of the strip or strips with strain. As shown, Figs. 1, 2, a wafer of monocrystalline semiconductor material, e.g. P-type Si, comprises on one surface two N-type sensor strips 13, 14 formed by diffusion and disposed in parallel and in alignment with one of the crystal axes. A protective layer 18, e.g. of SiO 2  is formed over the said surface and edges of the wafer; it is etched away or otherwise removed to provide access to the ends of the sensor strips, ohmic metal contacts 19, 191 and 20, 20<SP>1</SP> being alloyed to said ends. A " rosette " gauge (not shown) comprises a plurality of sensor strips extending in different directions from a central point. The wafer may be of intrinsic conductivity. In operation, the device may be bonded to the test member 41, Fig. 4, by alloying using an alloying agent 42, e.g. Au, each sensor strip being electrically insulated from the member 41 by the P-N junction it defines or, in the case of an intrinsic wafer, by the high resistivity of the latter. Alternatively, conventional cements may be used for bonding. The two sensor strips 13, 14, of Fig. 1, may form opposite arms of a Wheatstone bridge measuring circuit.
Patent GB-1366754-A (GB)
Title: Output devices for microwave tubes such as klystrons and klystrons incorporating such output devices
IPC: H01J23/00
Filed: 1972-05-17
Abstract: 1366754 Klystrons THOMSON-CSF 17 May 1972 [18 May 1971] 23272/72 Heading H1D An output arrangement for a microwave tube includes an output coupling loop 10 coupled to an external coaxial line 11 by an auxiliary coaxial line 15 extending in the direction of the electron beam, of length (2n+3)#/4, and shortcircuited at its two ends 16 and 17, the coupling loop and the external line being coupled to it at points located #/4 from its two ends, whereby interruption of the magnetic focusing coil 12 by the perpendicularly extending line 11 is avoided. As shown, the loop 10 is coupled to the output cavity of a klystron having a collector 9, and disturbance of the focusing field is minimized by the provision of a soft iron sleeve 18 around the line 15 where it passes through the polepiece 13. As shown in Fig. 4, the output loop 10 and the vacuum window 26 are cooled by a coolant circulating through the inner conductor 20 of the auxiliary coaxial line, and the window is additionally cooled by an external conduit 34. The caps 16 and 17 short-circuiting the auxiliary line may be adjustable (Fig. 5, not shown) to permit impedance matching.
Patent GB-1293295-A (GB)
Title: Extended life secondary cells
Inventor: VOORHIES JOHN DAVIDSON
IPC: H01M10/24
Filed: 1971-04-19
Abstract: 1293295 Rechargeable cells AMERICAN CYNAMID CO 19 April 1971 [27 April 1970] 23293/71 Heading H1B A rechargeable dry cell comprising a zinc electrode, a separator, an ammonium chloridezinc chloride electrolyte, and an azobisformamide-carbon depolarizing mixture is characterized by incorporating a tetraalkylammonium salt in contact with the zinc electrode, the alkyl groups having from 1 to 18 carbon atoms each, but not necessarily all the same number. The salt is preferably applied as a coating by evaporating the solvent, for example, methanol, from a solution of the salt. Methyltri-n-butylammonium iodide and ethyl-tri-nbutylammonium iodide are preferred salts but other examples are quoted. It is also stated in the Specification that the cycle life is improved if extra ammonium chloride is provided to keep the electrolyte saturated, and this may be added as solid ammonium chloride in the depolarizer.
Patent GB-794872-A (GB)
Title: Improvements in or relating to pressure relief valves
IPC: F16K17/08
Filed: 1956-07-27
Abstract: 794,872. Pressure relief valves. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. July 27, 1956 [May 7, 1956], No. 23312/56. Class 135. Relates to a pressure relief valve of the type having a valve closure member 4 biased to close an inlet 2 by an adjustable spring 6, or by a weight (not shown), a bellows 13 surrounding the valve stem 5 enclosing an area at the back of the valve closure member 4 equal to the area at the front of the closure member subjected to pressure in the inlet 2, so that buildup of back pressure in the valve outlet 22 will not raise the pressure in the inlet 2 necessary to open the valve. According to the invention, the valve stem 5 carries a piston 15 having an annular surface 14 equal in area to the annular surface 16 at the back of the valve closure member 4 lying between the bellows 13 and the projection of the valve stem 5 on to the closure member. The piston 15 lies in a cylinder 17 connected to the space within the bellows 13 by grooves 18, either in the valve stem 5 or the member supporting it. If the bellows 13 crack, back pressure in the valve outlet 22 acts upon the annular surface 16 on the back of the valve closure member 4 to produce a force additional to the spring &c., force biasing the closure member to shut the inlet 2, but simultaneously the same pressure acts upon the surface 14 of the piston 15 to produce a force in the opposite direction which equals and neutralizes this additional force. Thus the pressure in the inlet 2 at which the valve operates is always the same, irrespective of the back pressure in the outlet 22 and the pressure tightness of the bellows 13.
Patent GB-169880-A (GB)
Title: Improvements in or relating to variable delivery pumps
IPC: F04B49/08
Filed: 1920-08-09
Abstract: 169,880. Dawson, Sir A. T., and Horne, J. Aug. 9, 1920. Cam-actuated pumps; stroke, varying, - The stroke of a swash-plate pump is varied in accordance with the delivery pressure by the action of a pressure governor F<2> which adjusts a valve F<1> controlling the distribution of pressure fluid to two chambers B', E in the rotating pumpelement B, and thus determining the tilt of the plate C. The valve-chest contains a hunting- valve G, set by the movements of the swashplate and acting to cut off the supply of pressure fluid when the plate has been moved. A reservoir chamber H is provided which holds a reserve of pressure fluid adapted to tilt the swash plate if, when it is in its central position, there is a sudden drop in delivery pressure. In a modified device the governor F<2> is omitted, the chamber B<1> communicates directly with the delivery main, and the chamber E contains a spring.
Patent GB-947339-A (GB)
Title: Multi-purpose motor driven appliances
Inventor: GOHLER OTTO
IPC: A01D67/00
Filed: 1961-06-28
Abstract: 947,339. Lawn mowers; agricultural implements. AGRIA-WERKE G.m.b.H. June 28, 1961, No. 23401/61. Headings A1B and A1F. [Also in Division B7] A motor driven appliance adapted to be converted into a mobile agricultural or like machine, comprises in combination a motor, a transmission housing extending downwardly below the motor, and a pair of driven power take-off shafts extending horizontally at either side of the lower end of the transmission housing and having means for coupling to horizontal tool shafts or wheel axles, the transmission housing also having a clamping device for releasably securing a frame of the additional apparatus. In the form of a lawn mower the driven shaft 2 is coupled through boxes 34 and adjusting sleeves 33 to axles 32 carrying wheels 31 driving a conventional bladed rotor unit 22 through a gearbox 35. A clamping yoke 19 serves to secure the lawn mower unit to the transmission housing of the motor 1. Alternatively, the additional apparatus may be a reaping mower with one or more horizontal cutting blades rotating about a vertical shaft and driven from the wheels through suitable gearing. A seat for the operator may be provided on the appliance.
Patent GB-1264005-A (GB)
Title: Presser foot for sewing machine
Inventor: SMITH CLIFFORD JOHN
IPC: D05B3/18
Filed: 1969-05-08
Abstract: 1,264,005. Presser foot. LIGHTNING FASTENERS Ltd. 16 April, 1970 [8 May, 1969], No. 23464/69. Heading D1G. A presser foot for guiding a sliding clasp fastener stringer 10, 11 on to material 12 passing through a sewing machine include a portion 5 having a groove for the fastener elements 10 and a transversely extending slide element 16 slidably engageable with the presser bar engaging element 18 so that the foot may be moved transversely relatively to the sewing machine needle 14. The foot may be of rigid plastics material and present needle cleaning grooves 13. When the stringer shown 11 has been sewn to the material the element 16 is moved to locate the other groove 13 in line with the needle, the second stringer then being fed to the material 12 but with its tape portion 11 extending to the left under the foot. If the foot is made of metal the side walls of the groove may be sufficiently thin to dispense with the need for the needle grooves 13. Reference has been directed by the Comptroller to Specification 1,182,672.
Patent GB-1339960-A (GB)
Title: Photographic materials
IPC: G03C1/89
Filed: 1971-04-19
Abstract: 1339960 Polymer compositions; gelatine AGFA-GEVAERT AG 19 April 1971 [12 March. 1970 23 Jan 1971] 23492/71 Headings C3P C3G and C3H [Also in Division G2] A gelatine-containing solution or an antistatic layer in a photographic silver halide material comprises, as antistatic agent, in the form of a mixture and/or graft copolymer (1) a polymer of at least one olefinically unsaturated monomer which polymer has a mol. wt. of at least 10,000 and contains sulpho groups in free or neutralized form, and (2) a polymer having a molecular weight of at least 10,000 and in which at least 50 mole per cent of the units contain carboxy groups in free or neutralized form. Preferably (1) is Na polystyrene sulphonate or an N-substituted maleimide copolymer formed by reacting a mono- or di-sulpho aniline with an optionally sulphonated copolymer of (a) maleic anhydride and (b) styrene, ethylene or isobutylene, and (2) is polyacrylic acid or copoly(methacrylic acid/hydroxypropyl methacrylate).
Patent GB-1308017-A (GB)
Title: Contaminant removal from gases by filtration
IPC: B01D47/00
Filed: 1970-05-14
Abstract: 1308017 Removing oil droplets from gas VAN-AIR Inc 14 May 1970 [14 May 1969] 23530/70 Heading BIT An apparatus for removing oil and other contaminants from a gas under pressure comprises an upright vessel 10 containing a bed 22 of an elastic and compressible mass of curled strand material having a bulk density of 12-22 lb./cu. ft. The vessel has an inlet 12 the end of which terminates adjacent the vertical axis of the vessel and which has an inverted dish-shaped diffusing baffle 28 arranged thereabove. The filter bed 22 is supported on a substantially horizontal gas pervious means 30 and is compressed by a grating 43, the vertical position of which is selectively adjustable so as in use to maintain the density of the bed at a predetermined level. The filtered gas leaves via downwardly extending outlet 14. The vessel 10 also has an access hatch 20 and a drain 24. The filter bed is suitably metallic strands, e.g. of bronze, stainless steel, nickel-silver or carbon steel of thickness 0.018 to 0.25 in.
Patent GB-352769-A (GB)
Title: Improvements in spoon baits
IPC: A01K85/14
Filed: 1930-08-07
Abstract: 352,769. Spinning tackle. READMAN, H., 11, Polwarth Gardens, Edinburgh. Aug. 7, 1930, No. 23615. [Class 48.] The convex side of a spoon is made to represent a fish by applying feathers, tinsel, &c. 4. The decorative material is caused to adhere to the spoon by a celluloid varnish and is protected by an outer coating of varnish. A coating of lustrous paint may also be applied.
Patent GB-1289436-A (GB)
IPC: C09D7/47
Filed: 1971-04-19
Abstract: 1289436 Modified caustic soda UGINE KUHLMANN 19 April 1971 [14 April 1970] 23666/71 Heading C1A [Also in Divisions C2 and C5] The surface tension of aqueous sodium hydroxide solutions is lowered by a compound of formula C n F 2n+1 (CH 2 ) a CON(R 1 )(CH 2 ) p NR 2 R 3  wherein C n F 2n+1  is a C 1-20  perfluoroalkyl group, a is 2 to 10, p is 0 to 10, R 1  is hydrogen or C 1-6  alkyl and R 2  and R 3  are C 1-6  alkyl.
Patent GB-1260552-A (GB)
Title: Improvements in multi-disk clutches
IPC: F16D13/54
Filed: 1969-05-09
Abstract: 1,260,552. Friction clutches. REGIE NATIONALE DES USINES RENAULT, and AUTOMOBILES PEUGEOT. 9 May, 1969 [22 May, 1968], No. 23860/69. Heading F2C. In an electrically, hydraulically or mechanically actuated multi-disc friction clutch wherein a thrust mechanism C acts through a spring 11  on a presser plate 10 to clamp together clutch discs 6, 7 respectively splined to a shaft 1 and drum 2, two adjacent discs 6<SP>1</SP>, 7<SP>1</SP> remote from the pressure plate 10 have complementary cam surfaces Ra to provide an additional torque responsive axial loading. In Fig. 5 (not shown), each of the adjacent discs has two oppositely inclined cam faces (Rc, Rd).
Patent GB-684572-A (GB)
Title: Improvements in or relating to preparation of boron
IPC: C01B35/02
Filed: 1950-09-29
Abstract: 684,572. Electro-deposition of boron. WEIL, W. M. Sept. 29, 1950 [Oct. 8, 1949]. No. 23862/50. Class 41. In a process of preparing boron electrolytically a fused bath of potassium chloride and potassium fluoborate is employed, the bath being electrolysed to deposit boron on the cathode and release chlorine at the anode. During electrolysis the mixture is maintained at a temperature within the range of 650‹ to 1000‹ C., preferably 800‹ to 850‹ C. The components of the mixture are replaced as the process continues. It is preferable that the potassium chloride be present in greater amount than the potassium fluoborate. The cathode is eventually withdrawn from the bath, and it may be quickly covered with dry sodium chloride to prevent oxidation, and allowed to cool somewhat. The cathode is then immersed in water for several hours, whereby the boron can be readily removed. The boron is treated with water, then with strong hydrochloric acid, and finally washed with water, dried and sifted. The cell for use in the process may include an externally-heated crucible of graphite or similar electrically-conductive refractory material, protected by an outer shell of high-heat-resistant metal, such as the alloy known under the Registered Trade Mark " Inconel." Heating of the contents may be carried out by electric induction or electrical resistance heating in the bath itself. The crucible forms the anode of the cell.
Patent GB-1041045-A (GB)
Title: Production of hydrogen peroxide
Inventor: HOOPER GEORGE WALLACE
IPC: B01J21/08
Filed: 1962-06-21
Abstract: Hydrogen peroxide is produced by contacting hydrogen and oxygen with a solid catalyst comprising at least one element from Group Ib or Group VIII of the Periodic Table in the presence of liquid water, an acid and a non-acidic oxygen-containing organic compound. The acid may be sulphuric, nitric, hydrofluoric, hydrochloric, hydrobromic, phosphonic, or sulphonic acid or hydrogen sulphide or hydrogen cyanide.  A second acid radical for example sulphate, nitrate, fluoride, chloride, bromide, cyanide, cyanate, thiocyanate, phosphate may be present.  The oxygen-containing organic compound may be an alcohol, ketone, amide, ether or ester; examples are given. Preferred catalyst elements are palladium, gold, platinum. Atmospheric or superatmospheric pressures may be used; temperatures referred to are room temperature and 0 DEG  to -20 DEG  C. or below.