baber/WOPTO huggingface dataset:
Patent GB-470965-A (GB)
Title: Improvements in apparatus for removing filter cake from rotary filters
IPC: B01D33/06
Filed: 1935-12-20
Abstract: 470,965. Filters. WIEBE, J. Dec. 20, 1935, No. 35356. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 20, 1936.] [Class 46] Filter cake is removed from a rotary filter by means of a hollow perforated stripping roller through the periphery of which the cake passes into the interior. Fig. 2 shows a hollow perforated stripping roller 3 which is pressed by springs, weights or screws against a rotary drum filter 1. The cake passing into the roller is removed through openings 9 by blades 8 on a rotating spindle S or by scrapers or other devices. Fig. 4 shows an alternative construction for removing the cake from the interior of the roller in which a stretched wire 12 passes through the roller which is open at both ends and slightly inclined. The cake which passes through the perforations forms a layer on the inner surface of the roller which is cut by the wire 12 and passes out at one end of the roller. Fig. 5 shows a conical roller 3 applied to a disc filter 1. In another construction the cake is pressed through the perforations in the roller 3 by a separate pressure roller the surface of which may be grooved or provided with projections. Fig. 9 shows this construction in which 18 is the separate pressure roller. This figure also shows another pressure roller 25 mounted eccentrically within the stripping roller 3. The cake which is pressed into the roller 3 by the pressure roller 18 is forced out again by the roller 25 and finally drops off the roller 3 at the point 28. Any number of pressure rollers similar to the roller 18 may be provided and they may all be steam heated. The stripping roller 3 may be formed as a number of separate rollers mounted end to end, or as shown in Fig. 14 it may be formed from a helical rod 36, the convolutions of which are connected by members 37. Scrapers 40 may be provided as shown in Fig. 15 to prevent too great an accumulation of cake on the roller 3. The scrapers remove a layer of cake the thickness of which is regulated by arms 42 which rest on the surface of the cake.
Patent GB-768172-A (GB)
Title: Dialkoxy derivatives of bis-acetals of an unsaturated dial and their preparation and conversion into a trienic dial
Filed: 1954-12-08
Abstract: The invention comprises 2,7-dimethyl-1,1,3,6, 8,8-hexa-alkoxy-octene-(4)s.  These C10-dietherdiacetals may be prepared by condensing a butene-2-dial-(1,4) di(dialkyl)-acetal with at least 2 mols. of a propenyl-(1) alkyl ether in the presence of an acidic condensing agent, preferably boron trifluoride etherate, zinc chloride, titanium tetrachloride, aluminium chloride or tin tetrachloride.  Generally, a temperature below 50 DEG  C. is used. Preferably, the alkyl groups in the reactants contain 1 to 4 carbon atoms.  The products are mixtures of stereoisomers, which as such or separated into their components may be hydrolysed in an acidic medium to the C10-dialdehyde 2,7-dimethylocta-trien-(2,4,6)-dial-(1,8). Suitably, the hydrolysis is effected in the presence of water-soluble organic or inorganic non-volatile acids or watersoluble acidic salts, many examples being given, if desired in conjunction with a water-miscible solvent and an antioxidant; the alcohol liberated is continuously removed.  Alternatively, hydrolysis may be effected by heating with aqueous acetic acid for several hours and then diluting with water.  The C10-dialdehyde may be subjected to a Reformatsky reaction with 2 mols. of g -bromo tiglic acid ester and water split-off from the resulting product to give a crocetin ester.  Also, the dialdehyde may be acetalized, the resulting acetal condensed with two mols. of a vinyl ether and the condensation product treated with an acid to produce 4.9-dimethyl - dodecapentaene - (2,4,6,8,10) - dial - (1,12) which is of value in the synthesis of crocetin, bixin and lycopene.  In the example: propenyl-1 ethyl ether is reacted with butene-2-dial-(1,4-di(diethyl acetal) using zinc chloride as catalyst yielding a crude mixture of isomers of 2,7-dimethyl-1,1,3,6,8,8-hexaethoxy-octene-(4) from which one isomer, melting-point 70 DEG  C., crystallizes out on cooling.  The crude mixture or isolated isomer is hydrolysed in a mixture of water and dioxane containing phosphoric acid at 100 DEG  C., the water-alcohol-dioxane distilling off being replaced by water-dioxane mixture, and thereafter water is added to precipitate the resulting C10 dialdehyde.  The crude diether diacetal may be purified by distillation and then hydrolysed to the C10 dialdehyde by heating with an aqueous mixture of acetic acid and ethyl acetate at 100 DEG C. and thereafter distilling off the ethyl acetate formed and present initially in vacuo. Butene - 2 - dial - (1,4) diacetals used as starting materials may be prepared by catalytic partial reduction of acetylene-dialdehyde diacetals derived, for example, from methanol, ethanol, propanol and butanol.  Propenyl-(1)-methyl, ethyl and butyl ethers specified as reagents may be prepared by pyrolysis of propionaldehyde dialkyl-acetals.
Patent GB-738150-A (GB)
Title: Improvements in hydraulically-operated electric circuit-interrupting devices
IPC: H01H33/34
Filed: 1953-12-22
Abstract: 738,150. Hydraulic machines; accumulators. ALLIS-CHALMERS MANUFACTURING CO. Dec. 22, 1953 [Jan. 13, 1953], No. 35642/53. Class 69 (2). [Also in Group XXXVII] A hydraulic operating mechanism for an electric circuit-breaker (see Group XXXVII) has a fluid motor 13 supplied through valve means from a pneumo-hydraulic accumulator 50. When the solenoid 68 of a pilot valve 63 is energized, valve elements 66, 67 move upwardly and permit liquid under pressure to flow from accumulator 50 through pipes 75, 76 and 77 to control valve 64, the stem and elements 70 ... 72 of which are moved to the left. Liquid can now flow through pipes 75, 78 and 79 to the cylinder 7 below the piston 8 which moves upwardly, the liquid above the piston escaping through pipes 80, 81 to a reservoir 60. When the closing operation is completed, the solenoid 68 is de-energized and the valve 63 returns to the position shown in which liquid is supplied through pipes 75, 76 and 82 to the valve 64 so that its elements are moved to the right. Pressure liquid is now supplied through pipes 75, 78 and 80 to the cylinder 7 above the piston 8 which moves back to its lower position, the liquid below the piston escaping through-pipes 79, 85 and 81. The accumulator 50 has a rubber bladder 53 charged with nitrogen to approximately two-thirds of the system operating pressure; extrusion of the bladder from the shell 51 being prevented by a poppet valve 56 when. the liquid has been completely expelled from the shell 51. The accumulator is charged with pressure liquid by a power-driven pump 62 or by a hand pump 61, the latter enabling the system to be used as a hydraulic jack for maintenance operations.
Patent GB-1040849-A (GB)
Title: Adducts of a halogen-containing epoxide and a monomeric polyhydric compound
Inventor: BRUSON HERMAN ALEXANDER
IPC: C08G65/22
Filed: 1963-09-10
Abstract: The invention comprises adducts of a compound <FORM:1040849/C2/1> where each X is F, Cl or Br and n is 0-5, with a polyhydric monomeric compound, and their production by reacting at elevated temperature at least one molar proportion of the epoxide with one molar proportion of polyhydric compound in the presence of a Lewis acid as catalyst, e.g. BF3, BF3-etherate, BCl3, AlCl3, TiCl4, SnCl4, FeCl3 or an acidic clay.  Specified polyhydric compounds are ethylene, propylene, 1,4-butylene, diethylene, dipropylene, neopentyl, triethylene, and hexamethylene glycols, glycerol, hexanetriol, butanetriol, trimethylol propane, trimethylol ethane, polyglycerol, pentaerythritol, dipentaerythritol, polypentaerythritol, erythritol, mannitol, sorbitol, 2-butene- 1,4-diol, 2-butyne-1,4-diol, bis-phenol A, resorcinol, catechol, hydroquinone, methyl glucoside and 4,41-dihydroxybenzophenone.  The adducts are used in making polyurethane foams (see Division C3).ALSO:Polyurethane foams are prepared by reacting an adduct of a polyhydric monomeric compound with a compound <FORM:1040849/C3/1> where each X is F, Cl or Br and n is 0-5 (see Division C2), said adduct having a hydroxyl number of 30-800, with an organic polyisocyanate in amount at least 0.7 NCO groups to each OH group present, and also a foaming agent (such as H2O, CFCl3, CF2Cl2, CFCl2.CF2Cl, CH2Cl2, CHCl3 and CCl4) and a catalyst (e.g. a tertiary amine or a metal salt).  Carboxylic acids, polyesters or hydroxy compounds may also be present, as well as fillers such as clay, CaSO4 or (NH4)3PO4; dyes, fibrous glass, asbestos or synthetic fibres; and plasticizers, deodorants and anti-oxidants.  Suitable reactants are listed.
Patent GB-1134375-A (GB)
Title: Threaded fastener element
IPC: F16B33/06
Filed: 1967-08-04
Abstract: 1,134,375. Locking nuts. UNITED-CARR Inc. 4 Aug., 1967 [31 Aug., 1966], No. 35852/67. Heading F2H. A locking nut is formed by applying a patch 16 of a solvent base liquid adhesive to the surface of the threads 14 and coating the adhesive with a lubricant such as paraffin wax. The adhesive may comprise a vinyl-phenolic compound which is flowed on to the threads in liquid form. The solvent is then removed by drying before curing takes place in an oven for 10-20 minutes at 180-200‹ C. After cooling, the nuts are treated with a paraffin wax solution to smooth out the torque resistance and are then air or force dried.
Patent GB-771878-A (GB)
Title: Improvements in or relating to electric toasters
IPC: A47J37/08
Filed: 1955-12-14
Abstract: 771,878. Stud-and-socket fastenings; spring clips; push-pull catches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 14, 1955 [Dec. 27, 1954], No. 35878/55. Class 44. [Also in Group VI] In an electric toaster casing (see Group VI), plastic end-plates 22 are secured to a main metal shell 13 by clips 53 which engage on projections 54 on the end-plates. These clips engage behind flanges formed in the edge of shell 13, Fig. 3. The crumb tray 61 is hinged to the bottom of the toaster and is held closed by a clip 63, secured to the tray by a rivet 64, and adapted to engage a recess 65 in the frame 12.
Patent GB-359440-A (GB)
Abstract: 359,440. Counting-apparatus ; indicating. AUTOMATIC TELEPHONE MANUFACTURING CO., Ltd., Strowger Works, and SAXBY, R. N., 36, Millersdale Road, Mossley Hill, both in Liverpool. July 21, 1930, No. 22004. [Classes 106 (i) and 106 (iv).] A numeral-bearing drum has the digits disposed alternatelv in two rows in the manner shown in Fig. 1 and the digits are read in one or other of two apertures in a plate 17. The invention is described as applied to a preselector switch forming part of a counter, as in Specification 331,500, [Class 106 (i), Calculating &c.]. A light metal drum 14 is fixed to the wiper shaft and the plate 17 is supported by the switch framing.
Patent GB-1125562-A (GB)
Title: Improvements in hydraulic motors and pumps
Inventor: WHALLEY JAMES DEREK
IPC: F01B1/06
Filed: 1964-09-02
Abstract: 1,125,562. Reciprocating motors and pumps. BRITISH AIRCRAFT CORP (OPERATING) Ltd. Dec. 1965 [Sept. 2, 1964 (2)], Nos.35953/64 and 50807/65. Heading F1A. In a hydraulic motor or pump, e.g. for a vehicle wheel, having a cylinder 11, Fig.2, and multi-lobed cam tracks 14, 14a on a housing 13, the cylinder block and housing being relatively rotatable, two or more banks of pistons 21 act on the cam tracks through followers 25, 26 on links 27 pivoted on the cylinder block, and a pintle valve 34 coupled to the housing through splines 33 is axially movable to supply either all of the cylinders or only some of them. In Fig.2, adjacent pairs of cylinders 19, 20 are connected and have a common port 35, the ports 35 of successive pairs of cylinders being spaced axially so as to form two groups of ports, both groups being supplied by the pintle valve in its position shown, and only one group when the valve is moved to the right, Fig. 3 (not shown). The cylinders not in operation are connected to exhaust (motor). The valve may be moved hydraulically or mechanically against the spring shown. In Fig. 11, the cylinders have individual ports 135 which register with valve ports 137, 137a or 143, 143a in the full capacity valve position shown. When the valve is moved to its half-capacity position, cylinders 120 register with valve ports 153 or 154 and cylinders 119 are connected to discharge via groove 144.
Patent GB-937815-A (GB)
Title: Ring for a ring spinning frame
IPC: D01H7/60
Filed: 1960-10-21
Abstract: 937,815. Textile spinning rings. MANUFACTURE ALSACIENNE DE BROCHES. Oct. 21, 1960 [Oct. 23, 1959], No. 36239/60. Class 120 (2). A spinning ring for use with a symmetrical traveller 2 comprises a cylindrical web 1 having an inwardly-inclined flange 1b which is symmetrical about a line O B inwardly inclined, preferably at an angle of 20 degrees with respect to the web 1.
Patent GB-837841-A (GB)
Title: Reserpic acid diesters and salts thereof and process for their manufacture
Filed: 1958-11-11
Abstract: The invention comprises compounds of the formula <FORM:0837841/IV (b)/1> in which R is an alkyl group of from 1-5 carbons, their salts, and their preparation by esterifying an alkyl reserpate with hexahydrobenzoic acid or a functional acid derivative thereof. The preparation of O-hexahydrobenzoyl-reserpic acid methyl ester is detailed.
Patent GB-1367357-A (GB)
Title: Method of forming a drawn and ironed metal can body
IPC: B21D22/28
Filed: 1971-08-02
Abstract: 1367357 Stamping; making cans AMERICAN CAN CO 2 Aug 1971 [1 Dec 1970] 36309/71 Headings B3Q and B3A A thickened sidewall portion 76 is formed adjacent the open end of a metal can body during a drawing and ironing process by terminating the movement of the punch 12 to prevent the can body from passing completely through the last die. In the embodiment described, a pre-drawn cup is forced by the punch 12 through a first drawing and ironing die and second and third ironing dies, the stroke of the punch 12 being controlled in order to leave the thickened sidewall portion 76 which facilitates subsequent necking-in and flanging operations. After withdrawing the can body and punch 12 from the last die, the can body is removed from the punch 12 by an internal stripper within the punch 12 (not shown) and/or an external stripper 80.
Patent GB-892931-A (GB)
Title: Improvements in or relating to motion translation devices
Inventor: FIRTH ARTHUR JOSE
IPC: F16H25/20
Filed: 1959-10-27
Abstract: 892,931. Screw-and-nut gearing. COHEN 600 GROUP Ltd., GEORGE. Oct. 7, 1960 [Oct. 27, 1959], No. 36385/59. Class 80 (3). A motion translation device for the elimination of backlash between a driving screwthreaded rotary shaft 1 and a member 2 driven linearly thereby axially of the shaft by engagement of the shaft with a part 4 fixed to or integral with the member 2, comprises an internally-threaded nut 5 non-rotatably mounted on the shaft and spaced from part 4 by a wedge 7 urged by a spring 8 to hold the nut 5 and part 4 in contact with opposed flanks of the shaft screw-threads. A face of the part 4 may be tapered or opposing faces of both the part and nut 5 may be tapered and the wedge 7 may be tapered in the opposite direction. The generally horseshoe shaped wedge 7 is held loosely to the part 4 and nut 5 by pins 9.
Patent GB-416921-A (GB)
Title: Process for the production of unsaturated hydrocarbons from hydrocarbons proportionately richer in hydrogen
IPC: C07C5/32
Filed: 1932-12-23
Abstract: Unsaturated hydrocarbons are manufactured from hydrocarbons proportionately richer in hydrogen and containing more than one carbon atom in the molecule, especially paraffins and open chain olefines, by heating such hydrocarbons for less than one second to temperatures above 800 DEG  C. at reduced pressure in narrow empty tubes.  For the production of acetylene it is advisable to combine the reduction of pressure by evacuation with dilution by added inert gases, and to use tubes with smooth inner surfaces.  For the production of other hydrocarbons, for which lower temperatures may be employed, the tubes may be charged with ceramic material in order to produce an extensive surface.  The process is applicable to the treatment of unsaturated and easily dehydrogenizable hydrocarbons, e.g. those obtained in the distillation of coals, peat or oil-shale or by cracking asphalt, pitch, tar and oils. The hydrogen liberated may be used again, e.g. for diluting further charges.  The process may be carried out in regeneratively acting furnaces, or the heat of the reaction gases may be transferred to other substances, e.g. water or cold gases, preferably such as are employed for preliminarily or fully heating the regenerative furnaces.  The heating tubes are suitably constructed of refractory material not favouring the decomposition of hydrocarbons into carbon and hydrogen, e.g. silica or alumina. In examples: (1) a gas mixture containing ethylene, hydrogen and some nitrogen under 0,1 atmosphere pressure is passed through a Pythogoras capillary at 1400 DEG  C., producing a mixture of acetylene and hydrogen with some nitrogen, ethylene, heavy hydrocarbons and methane; (2) a mixture of ethane and hydrogen is passed through similar apparatus at the same pressure; at 1050 DEG C. 75 per cent of the ethane is converted into ethylene and at 1350 DEG  C. into acetylene; (3) a mixture of hydrogen and benzine vapour at 0,1 atmosphere pressure is passed through a porcelain tube at 900 DEG  C. whereby 58 per cent of the benzine is converted into ethylene whilst some propylene and acetylene and traces of liquid unsaturated and aromatic hydrocarbons are also formed. Specifications 332,998, 334,178, [both in Class 2 (iii)], and 343,881 are referred to.
Patent GB-913827-A (GB)
Title: Ice-block release apparatus
IPC: F25C1/04
Filed: 1961-10-11
Abstract: 913,827. Ice-making. GENERAL MOTORS CORPORATION. Oct. 11, 1961 [Oct. 20, 1960], No. 36470/61. Addition to 868,875. Class 29. [Also in Group XXXVII] In an ice-block release apparatus having an ice-block compartment connected by a restricted passage with a chamber so that freezing of water in the chamber forces a pre-formed iceblock out of the compartment, a heater is arranged to thaw the chamber after ejection of an ice-block. In the apparatus described, ice-blocks are formed and ejaculated as described in Specification 913,826 in a refrigerator freezer compartment 13, Fig. 4, and an electrical control circuit causes automatic thawing of the chambers 37 and refilling of the compartments 36 so that ice-blocks may be formed continually until receptacle 73 is full. In operation, after blocks have been ejaculated into receptacle 73, further cooling of the air in freezer compartment 13 operates temperatureresponsive switch 48, Fig. 9, to energize a heater 52 and a heater 103. The heater 52 melts the ice in chambers 37. The heater 103 initiates operation of a timing device 75 by causing a flexible beam comprising bimetallic arms 86, 96 and insulating plate 87 to move to the left which results firstly in the closing of contacts 99, 101 to complete a holding circuit for heater 103 and eventually in the opening of contacts 83, 84. The latter contacts then oscillate until switch 48 is opened by the rise of temperature of air in compartment 13 when the flexible beam returns to the right. Contact 88 then engages contact 89 on arm 91 which has been moved to the left by the beam and pressed against stop 94 by toggle spring 92; this energizes solenoid 59 to open valve 58 for refilling of the chambers 37 and iceblock compartments 36 with water. Continued movement of the flexible beam to the right causes arm 91 to snap back to the position shown after a predetermined time, thus reopening contacts 88, 89 and closing the valve. Further ice-blocks can then be formed and ejaculated. When the receptacle is full, the weight of the ice-blocks opens contacts 61, 62 to prevent any further energization of heaters 52, 103 so that the cycle of operations is broken. Removal of the receptacle similarly opens contacts 61, 62. Specification 868,874 also is referred to.
Patent GB-1219944-A (GB)
Title: A system of permanent magnets for holding and conveying purposes
Inventor: SPODIG HEINRICH
IPC: B23Q3/154
Filed: 1968-07-31
Abstract: 1,219,944. Magnetic holder. H. SPODIG. 31 July, 1968 [9 Aug., 1967], No. 36513. Heading H1P. [Also in Division B8] A magnetically conductive holding surface 3 is provided for the permanent magnets 2 of a holder 1. The volume of the surface in relation to the strength of the magnets is such that the surface only partially short-circuits the field and there is a magnetic scatter field above the surface 3. In an alternative embodiment a conveyer is disclosed wherein the surface 3 is an endless sheet of metal passing around the magnets.
Patent GB-795788-A (GB)
Title: Rapid filtering installations
Filed: 1955-12-20
Abstract: 795,788. Filters for liquids. SULZER FRERES SOC. ANON. Dec. 20, 1955 [Dec. 21, 1954], No. 36520/55. Class 46. In a rapid filtering installation for liquids comprising a common inflow channel leading to inlet connecting channels, individually controllable filter sections or groups of sections disposed parallel to one another and connected to the inlet connecting channels and to outlet connecting channels, the connecting channels including flow control devices, and a common outflow channel connected to the outlet connecting channels, the channels and the filter sections forming part of the structure of the installation, the flow controlling devices in the inlet connecting channels and those in the outlet connecting channels are disposed respectively side by side in parts of the channels which form a protrusion of the structure and extend over only a small part of the overall width of the installation. An inlet channel 7 leads to a battery of weirs 1#. . . 6f connected respectively by channels 1e . . . 6e to inlet chambers 1c . . . 6c, each supplying a pair of filter sections 1a, 1b . . . 6a, 6b, the channels 2e, 5e passing beneath the channels 3e, 4e and the channels 1e, 6e beneath the channels 2e, 5e. The sections discharge into outlet chambers 1d . . . 6d leading to a battery of control valves 1h . . . 6h supplying a common outlet channel 9.
Patent GB-621768-A (GB)
Title: Improvements in or relating to electric impulse clocks and clock systems, and apparatus therefor
IPC: G04C3/00
Filed: 1946-12-11
Abstract: 621,768. Electric clocks. RIMMINGTON, F. Dec. 11, 1946, No. 36549. [Class 139] [Also in Group XXXVII] In electric clock arrangements impulses to the clocks. themselves or to a pendulum maintaining magnet are delivered by switches in which a screen of magnetic material is interposed between a permanent magnet and a contact-carrying armature [see Group XXXVII]. In the arrangement shown an arm 13 is actuated each time a pawl 6 on the pendulum 5 engages a deep tooth 8 on the count wheel, thereby withdrawing a magnetic screen 10 from between a magnet 11 and an armature 12 and delivering periodic impulses to a line 15. 35 leading to the clocks 17. The pendulum 5 when its amplitude falls sufficiently also actuates, by means of a Hipp toggle 28 a screen 21, to cause the energization of an electromagnet D for maintaining the oscillation of the pendulum. The arrangement,also includes a relay c which, in the event of mains failure, connects up a battery 4, and a manual switch 29 adapted, when moved in the "advance" direction to complete a circuit to' an electromagnetic interrupter A, B (see Group XXXVII) which delivers impulses to the clocks 17 to advance them. When moved in the "retard" direction the clocks are stopped. Specification 614,237 is referred to.