baber/WOPTO huggingface dataset:
Patent GB-290041-A (GB)
Title: Improvements in hoisting gear
IPC: B66C7/00
Filed: 1927-05-11
Abstract: 290,041. Holt, J., Holt, C., Holt, B., and Powell, J. W. May 11, 1927. Overhead travellers.-In hoisting gear of the kind comprising a power unit such as an electric motor, controlling means therefor, reducing gear, and a drum upon which the hoisting cable is wound, the power unit 10, switch box 14, gear casing 15, 16 and drum 25 are mounted upon a suspension plate 1. Suspension arms 3 are attached to lugs 2 on the plate 1 and are connected by bars 4. These bars may pass through a frame 5 carrying rollers 6 which run on a girder 9. The rollers may be actuated by a hand-wheel 7 through gearing 8. The motor 10 and brake 12 are mounted on the upper side of the plate 1. The switch box 14 is secured to a bracket 13, or upwardly bent lug, formed integral with the plate, and the switch is actuated to cut off the current when the block 27 comes into contact with the lever 28. The two parts 15, 16 of the gear casing are secured by bolts 18, and the part 16 is provided with an integral lug 19, or separate bracket, which is bolted to the upper surface of the plate 1. The casing is provided with a number of oppositely arranged bosses 20 containing pins 21 which form the axles of the gear wheels. The pins and gears are made preferably of different metals. A bracket 24 secured to the underside of the plate 1 supports one end of the shaft 23 of the drum 25. The other end of the shaft is mounted in the gear casing.
Patent GB-661097-A (GB)
Title: Improvements in or relating to methods of preparing foodstuffs for livestock and apparatus therefor
IPC: A23N17/00
Filed: 1948-05-07
Abstract: 661,097. Steam-heated cookers. POWLING, W. T., POWLING, W. T. L. and DAVIES, P. S. May 9,1949 [May 7, 1948], No. 12646/48. Class 28 (i). [Also in Group I] Apparatus for cooking animal food comprises (Fig. 2) a steam boiler 12 capable of withstanding superatmospheric pressure and a fire box 13, and a cooking vessel 21 having a body portion within the boiler so as to be in contact with the water therein but presenting an external surface with filling 23 and emptying 24 means. For agitation of the food during cooking there may be provided within the vessel paddles rotatable on a shaft, or the food may be placed in a foraminous cylinder 47 within the vessel 21 (Fig. 3) and this cylinder rotated about a shaft 42 during the cooking. Some of the steam generated in the vessel during the cooking may be employed for pre-heating a fresh charge. Specification 184,704, [Class 28 (i)], is referred to.
Patent GB-844739-A (GB)
Title: Addition polymers of monomeric vinyl compounds and unsaturated linear polyester resins and a process for their production
IPC: C08G63/553
Filed: 1959-04-14
Abstract: The Specification comprises addition polymers of monomeric vinyl compounds and unsaturated linear polyester resins which contain endomethylene tetrahydrophenyl radicals, endomethylene hexahydrophenyl radicals, 2, 5,-methylene-bicyclo-[0, 3, 4,]-nonenyl radicals, or 2, 5,-methylene-bicyclo-[0, 3, 4]-nonyl radicals.  The said radicals are preferably introduced into the polyester resin by wholly or partially replacing the glycols normally used by glycols containing the required radical.  In examples maleic anhydride is reacted with:-(1) glycerine mono-(2, 5-methylene-bicyclo-[0, 3, 4,] nonenyl) ether and ethylene glycol in the presence of xylene and the resulting polyester diluted with styrene.  The solution is cooled to room temperature and cured with the addition of 1.6% of methylethylketone hydroperoxide in methylethyl ketone and cobalt naphthenate in styrene to form a film.  (2) glycerine mono-(endomethylene-tetrahydrobenzyl)-ether and ethylene glycol and the polyester diluted with styrene and cured.  (3) endomethylene hexahydrophenyl glycol ethylene glycol and phthalic acid anhydride in xylene.  (4) the adduct of cyclopentediene and pentaerythistol and ethylene glycol in xylene.
Patent GB-956132-A (GB)
Title: Improvements in and relating to laminated slabs or panels
IPC: E04C2/32
Filed: 1959-04-14
Abstract: 956,132. Laminates. G. M. ADIE. April 8, 1960 [April 14, 1959; Nov. 12, 1959], Nos. 12710/59 and 38431/59. Heading B5N. [Also in Division E1] A slab, panel, block or the like comprises a number of sheets having dimples therein of square, circular, hexagonal or other polygonal shape. The sheets are disposed so that the size of the dimples in the sheets decreases from sheet to sheet away from the median plane of the slab or from one face to the other, and so that the apices of the dimples in all but the outermost sheet or sheets lie within and in contact with a dimple in an adjacent sheet. The Figure is an exploded view of such a slab with a plane sheet on each face. The central sheet may be as shown in the Figure or may be formed with two series of dimples in opposite directions, with a land or web forming a dogleg in the median plane of the sheet (Figs. 3 and 4, not shown) or may be a plane or may be of stronger material than the other sheets. The dimpled sheets may be of pressed fibre, artificial plastic material, e.g. polyvinyl chloride or urea-formaldehyde, or steel. The sheets may be riveted together, or stuck with an adhesive. A sheet or blanket of material which will act as an adhesive, a hardener, a heating element, a heat-containing or reflecting element, or a weather-proofing or fire-proofing element, or which has acoustic or insulating properties, may be interposed between any two sheets. It can be arranged at the centre of the slab to isolate the grids of ducts between the dimples on one side of the central sheet from those on the other.
Patent GB-1447452-A (GB)
Title: Purification of vinylidene chloride
IPC: C07C21/08
Filed: 1974-03-22
Abstract: 1447452 Purification of vinylidene chloride IMPERIAL CHEMICAL INDUSTRIES Ltd 27 Feb 1975 [22 March 1974] 12799/74 Heading C2C Vinylidene chloride is purified by removal of dichloroacetylene impurities by treatment with a solution of an inorganic sulphide, polysulphide or hydrosulphide. The solution is preferably an aqueous solution of a sulphide, polysulphide or hydrosulphide of NH 3  or a metal in Group IA or IIA or a mixture thereof. The hydrosulphides of NH 3 , Na, Ca and K are particularly preferred. The sulphide &c. is preferably used in an amount of 0À5-20 gms. of 5 per 100 gms. of solution in the liquid or vapour phase. The impurity may be removed during the formation of vinylidene chloride by dehydrochlorination of 1,1,2-trichloroethane in the presence of the said sulphide &c. solution.
Patent GB-252377-A (GB)
Title: Improvements in band clips or clamps for securing hose-pipes and like uses
IPC: F16L33/14
Filed: 1926-05-19
Abstract: 252,377. Gouirand, R. May 19, 1926. Clips band. -A band clip for securing hose-pipes and like uses has a member which serves to deform the transverse section of the band whereby the band is held or secured. A sheetmetal connecting member bent to substantially triangular form is provided with opposed openings 5, 6 in the faces 2, 3. Opening 5 is formed by stamping out a tongue 4 forming a continuation of the face 1. Opening 6 has a concave upper edge 7 and preferably converging sides. One end of a flat band 8 is passed through opening 6 and is bent back under the rest of the band. The face 1 is then placed in contact with the hose-pipe &c. 10, the band is passed one or more times round the pipe, being threaded through the openings 5, 6, and finally the freeend is rolled up in anti-clockwise direction, Fig. 4, upon a split cotter pin 11, square pin, &c. The flat band is thus drawn over and forced against the concave edge 7, deforming the band to produce kinks 14 shown enlarged, Fig. 10, which serve to retain the band under tension. The pin 11 may be left in place or removed. A modification is described in which the connecting member is in the form of a casting with suitable openings.
Patent GB-1421678-A (GB)
Title: Capacitance to frequency transducer
IPC: G01L1/14
Filed: 1974-03-22
Abstract: 1421678 Measuring capacitance BENDIX CORP 22 March 1974 [28 March 1973] 12899/74 Heading G1U An unknown capacitance 24 is measured by applying a voltage asinwt to it thereby causing a first current I 1  to flow through it, where Ii = wCacoswt, by adding to this current a second current I 2  from a resistor 22, where I 2  = -bcoswt, amplifying 28 the resulting sum current of (wCa-b)coswt to produce a voltage which controls the frequency w in such a manner that the resulting sum current is brought to zero, whereupon the equilibrium frequency is inversely proportional to the capacitance C. As described a 10 Mc/s oscillator 2 has its output divided 4 and smoothed 6, 8 to give a sinusoidal voltage E 1  = asinwt which is applied to the capacitor 24. Simultaneously, the divided output from the oscillator is phase shifted 90 degrees by a circuit 10 to give a sinusoidal voltage E 2  = -bcoswt which is applied to the resistor 22 to produce the current I 2 . This current is summed by the differential amplifier with the first current to produce a voltage which controls the frequency of the oscillator 2 in the manner described. The capacitor 24 could be a pressure transducer, in which case, if its capacitance varied inversely with pressure (which is generally so), then the equilibrium frequency will vary linearly with pressure.
Patent GB-639308-A (GB)
Title: Improvements in or relating to a dress pattern marker
IPC: A41H1/06
Filed: 1948-05-12
Abstract: 639,308. Dress pattern markers. SCHAFFNER, C. May 12, 1948, No. 13005. [Class 141] A dress pattern marker consists of two oppositely rotatably mounted discs 16 carrying cylindrical crayon holders 17 having slots 19 with inwardly pointing ribs to firmly hold crayons 21 at the sprungapart ends of two flexible arm members 12, 11 which are secured in grooves in the upper and lower faces of the handle 10 respectively. When a knob 33 pivoted to the arm 12 and having a lever 23 fixed to it is rotated by an operator who has previously placed a pattern and a double-ply material between the crayons 21 and pressed them together, the crayons are rotated in opposite directions by means of connecting links 28, 29. A part of the upper disc 16 may be cut away as at 36 to enable the operator to view the crayons.
Patent GB-567469-A (GB)
Title: Improvements in screws and the like fasteners
IPC: F16B23/00
Filed: 1943-08-11
Abstract: 567,469. Screws and like fasteners. AMERICAN SCREW CO. Aug. 11, 1943, No. 13011. Convention date, Oct. 6, 1942. [Classes 44 and 89 (ii)] Screws and like fasteners, for example bayonet type fasteners used on the cowls of aircraft, have the heads provided initially with cruciform recesses. Subsequently a wide segmental slot 22 is cut, being superposed on one of the initial transverse slots. This enables the screw or fastener to be manipulated by an ordinary screw-driver or by a coin when the special screwdriver is not available. The Specification as open to inspection under Sect. 91 states that the cruciform recesses are of the type described in U.S.A. Specification 2,046,839. This reference does not appear in the Specification as accepted.
Patent GB-1457512-A (GB)
Title: Disc brakes
IPC: B60T13/26
Filed: 1973-03-19
Abstract: 1457512 Multi-disc brakes; actuating cylinders; transmission mechanism KIRKSTALL FORGE ENG Ltd 4 March 1974 [19 March 1973] 13018/73 Headings F2E and F2F A multi-disc brake assembly 15 for a pair of road wheels 12 consists of two sets of interleaved discs 16, 17 immersed in oil and splined respectively to an extension 18 of a rotatable wheel hub 13 and to a fixed member 19, a pair of opposed plates 20, 30 one of which 30 is an annular plate disposed adjacent the discs 16, 17, balls 31 disposed between the plates 20, 30 and accommodated in respective recesses in the plates 20, 30 having inclined surfaces (31), a cam 27, a cam shaft 26 rotatable to rotate the cam 27 to impart rotation to one of the plates 20, 30 and thereby to cause the balls 31 to move the plate 30 away from plate 20 to cause braking interengagement of the discs 16, 17. In the embodiment of Figs. 1-7 the cam shaft 26 which extends parallel to an axle tube 10 is fixed to an arm 25 connected to a piston rod 24 projecting from a spring brake chamber 23. During parking or emergency braking air line pressure applied to a hold-off cylinder is disconnected to cause spring brake application. Service braking is accomplished by actuation of a valve arranged to cut off the supply of air to the hold-off cylinder and apply air under pressure to a back up cylinder behind the spring. The rotatable plate of Figs. 1-7 is plate 30 which has a block 28 attached thereto by dowels 29 (Fig. 4), and the cam 27 bears on block 28 so that the plate 30 is rotated by cam 27 through block 28 to apply the brake assembly 15. In the embodiment of Figs. 8-10 a plate 120 is rotatable and annular plate 130 is movable axially but splined to member 19 to prevent rotation. The cam 27 is disposed in a cut-out 40 in a flange (41) on the plate 120, and causes rotation of the plate 120 to urge plate 130 axially. The plates 120, 130 are urged together by springs 42. The brake assembly may be operated by a hydraulic cylinder and an over-riding hand brake mechanism.
Patent GB-385833-A (GB)
Title: Improvements in refrigerant evaporators for air-cooling apparatus combined with refrigerating chambers
IPC: F25B39/02
Filed: 1932-05-06
Abstract: 385,833. Refrigerator - cars &c. PAASCHE, J., 13, Albe Strasse, Friedenau, Berlin. May 6, 1932, No. 13053. [Class 29.] The air in a refrigerator-car &c. is cooled and its moisture content regulated by circulation over smooth evaporator pipes 4 upon which the bulk of the moisture is deposited and gilled evaporator pipes 5. By this means the formation of snow between the gills is obviated. The pipes 4, 5 are disposed in series with a refrigerant liquid reservoir 2 and the flow of refrigerant through one or more banks of the tubes 4 is controlled by throttle valves 10 regulated by humidistats arranged in the car. The velocity of the air over the pipes 4, 5 is from 0À1 to 0À5 metres per second and from 10 to 20 metres per second respectively. A scraper 13 is provided for cleaning the pipes 4. The pipes 4, 5 may be disposed either in parallel or series-parallel with the reservoir.
Patent GB-352137-A (GB)
Title: Treatment of borax ores
IPC: C01B35/10
Filed: 1930-04-28
Abstract: Insoluble borates, such as of the alkaline-earth metals, calcium, barium, strontium, are obtained by dissolving ground borax ores in preferably hot water, and adding a soluble reagent capable of forming the same, for instance the chloride or nitrate of the metal in question.  The precipitate, for instance, calcium borate hexahydrate, may be subsequently calcined, at, for instance, 500-700 DEG  F., to remove water of crystallization, thereby further increasing the boric acid content.  The borate may be used in varnish and paint driers, or for the production of boric acid.
Patent GB-1467976-A (GB)
Title: Catheter
IPC: A61M25/00
Filed: 1974-03-25
Abstract: 1467976 Catheters INTERNATIONAL PAPER CO 25 March 1974. [5 April 1973] 13093/74 Heading A5R A method of manufacturing a catheter comprises steps of providing an external tube 12 having a drainage lumen 14 and an inflation lumen 15, providing a first aperture 25 communicating with the inflation lumen adjacent the distal end of the tube, plugging the inflation lumen by a plug 32, moulding a closed end sleeve 21, depositing bands of adhesive around the tube at regions 16, 20, mounting the sleeve 21 on the distal end of the tube and then securing it to the tube by applying radial pressure to the assembly of the tube and the sleeve, and lastly providing a second aperture 24, communicating with the drainage lumen, through the sleeve and the tube, the modulus of elasticity of the sleeve being less than that of the tube. The tube regions 16, 20 are reduced in diameter by grinding before applying the adhesive material, such as heat curable silicone rubber or room temperature vulcanizing silicone rubber, thereby defining an annular shoulder region 18, the latter preventing the flow of the adhesive onto it during the process of bonding the sleeve and the tube together. The sleeve 21, is manufactured using a vertical, flashless moulding technique (Fig. 6 not shown). The tube with the sleeve positioned on its distal end is then placed in the mould 70 and a pressurizing source 71, connected to the drainage lumen, exerts radial pressure on the assembly of the tube and the sleeve. In case of a heat activated adhesive, the mould may be simultaneously heated by a heating element provided in the mould. After providing the aperture, the catheter may be post cured. The rounded tip 23 of the sleeve is substantially solid to make it rigid and may be provided with a cavity 26 to receive a stylet. In another embodiment, (Figs. 5, 8 not shown) the distal end of the tube is bevelled and the tip is provided with an annular rearwardly extending protrusion (37) for its engagement with the drainage lumen and thereby to facilitate the alignment of the sleeve with the tube. A radio-opaque tip, non- integral with the sleeve may be provided.
Patent GB-1339178-A (GB)
Title: Conversion of polyhalophthalocyanines into pigmentary form
IPC: C09B67/12
Filed: 1971-05-05
Abstract: 1339178 Polyhalophthalocyanine pigments BADISCHE ANILIN- & SODA-FABRIK AG 5 May 1971 [6 May 1970] 13170/71 Heading C4P Crude metalliferous or metal-free polyhalophthalocyanine pigments are finished by treating the crude pigment at a temperature of up to 100‹ C. with one or more sulphuric acid monophenol esters, adding water, stirring the aqueous mixture at 80-150‹ C., whereby the ester is hydrolysed to form sulphuric acid and the phenol, and isolating the pigment after the addition of an alkaline reagent which forms a water soluble salt of the phenol formed by hydrolysis. The treatment is advantageously carried out in a melt of the reaction product of oleum or chlorosulphonic acid with one or more phenols which are inert to nuclear sulphonation under the reaction conditions. Suitable phenols are 24-dichloro-, 2,4,5-trichloro-, 2-methyl-4,6- dichloro- and 2,4,5,6-tetra chlorophenol. The melt may contain free phenol or free sulphuric acid. The aqueous sulphuric acid phase may optionally be separated after the hydrolysis step and prior to the addition of the alkaline reagent. After the addition of the alkaline agent the pigment is filtered, washed with water and dried.
Patent GB-611559-A (GB)
Title: Improvements in tyre-carrying rims for vehicle wheels
IPC: B60B25/18
Filed: 1946-05-01
Abstract: 611,559. Vehicle wheels. KELSEY-HAYES WHEEL CO. May 1, 1946, No. 13199. Convention date, May 7, 1945. [Class 144 (ii)] In a divisible wheel-rim of the type comprising a detachable side-flange secured by a split locking- ring fitted in a groove in the rim-base, the locking- ring is formed on one or both of its axial faces with circumferentially-spaced protuberances to engage the detachable flange or the rim-base (or both) whereby flexure of one or more of these members is set up by the assemblypressure of the inflated tyre. As shown in Figs. 3, 4 and 5, the detachable tyre-retaining flange 11, adapted to slide on the stepped portion 8 of the rim-base, is secured by a split ring 3 seated in the rim-groove 6. Oppositelyconed faces 20, 21 on the ring 3 are adapted to co-operate with an inclined seat 15 on the rimflange. The inner periphery of the ring 3 is formed with alternating projections and recesses whereby, the over-all radial thickness of the ring being slightly greater than the normal distance between the bottom of the groove 6 and the flange-seat 15, the outward displacement of the flange on inflation of the tyre causes distortion of the grooved portion of the rim. In modifications, the locking-ring, which may be of tubular section, is formed with projections on its inner and outer peripheries to effect distortion in both the rim-base and the detachable flange.
Patent GB-746565-A (GB)
Title: Washing and protecting photographic silver images
IPC: G03C5/38
Filed: 1954-05-06
Abstract: 746,565. Finishing and protecting photographs. INTERNATIONAL POLAROID CORPORATION. May 6, 1954 [June 3, 1953], No. 13218/54. Class 98 (2). A photographic silver image is washed by spreading or swabbing thereon a liquid comprising water, a volatile water-miscible solvent, an organic polymer having polar groups and an electrolyte to solubilize the polymer, and remaining liquid is dried to form a protective coating of water-insoluble polymer on the image. The process is particularly useful in the case of thin silver images, such as those made by the silver salt diffusion or migratory transfer process, which may contain traces of reagents such as developer or hypo.. Desirably the liquid contains an agent, such as a salt which forms a pale-coloured insoluble sulphide, to protect the image from atmospheric sulphides. In example I 2-vinylpyridine is heated in acidified water in the presence of ammonium persulphate and caustic soda is added to precipitate the polymer, which is cashed and dried, and then dissolved in a water-ethanol mixture containing acetic acid to form the spreading liquid. In example II acetone replaces the ethanol and zinc acetate dihydrate as,sulphide precipitant is dissolved in the liquid. Example III, similarly, uses an isopropyl alcoholmethanol mixture as the volatile solvent. Example IV describes the copolymerization of methyl methacrylate and maleic anhydride and formation of the spreading liquid. by mixing the resulting copolymer with water/ethanol and adding ammonia to cause solution. Example V uses an ethyl methacrylate-maleic anhydride copolymer in a similar ammonia solution. Numerous other polymers, electrolytes to cause them to dissolve, volatile organic sol. vents and sulphide-precipitating salts are described. Silver images for treatment by the invention which are made by the diffusiontransfer process may be arranged to lie on an image receiving layer which is backed by a water-impermeable layer as of a rubbery polymer such as polyvinyl butyral, to prevent aqueous processing solutions from penetrating into a further support. Specifications 684,593 and 703,231 are referred to.
Patent GB-1424412-A (GB)
Title: Switch and mechanism therefor
IPC: H01H5/10
Filed: 1973-03-20
Abstract: 1424412 High voltage switch WESTINGHOUSE ELECTRIC CORP 20 March 1973 [27 March 1972] 13312/73 Heading H1N A switch in a gas insulated bus-bar system, whose movable contact member 18 makes and breaks connection between bus-bar conductors 13, comprises a rotatable operating shaft 20 coupled to an operating lever 40 which can slide the contact member 18 to and fro via cam 48, follower 46 and shaft 24, the operating shaft 20 being rotated by a driving motor via a lost motion connection in the form of a notched rotatable coupling, and turning a three-legged overcentre toggle member 57 which operates in conjunction with spring mechanism 65, to provide a snap-action, there being a second lost motion connection 71 between the toggle member and a further operating lever 54 coupled to shaft 20. The toggle member 57 is loose on the operating shaft, and the second lost motion is provided by two legs of the toggle, 180 degrees apart, being arranged to strike alternately one or other of two adjustable means on the lever 54 to move that lever. The spring mechanism 65 has a throw of approximately 180 degrees. A dashpot 26 cushions the opening operation of the switch. The bus-bars are filled with SF 6  under pressure and compartmentalized by spacers 9 which serve to support the conductors 13 of the bus-bars.