baber/WOPTO huggingface dataset:
Patent GB-830856-A (GB)
Title: Improvements in and relating to fluid-operated clamping cylinders
IPC: B23Q3/08
Filed: 1958-01-28
Abstract: 830,856. Work-holders. BEKA ST. AUBIN A.G. Jan. 28, 1958 [Feb. 1, 1957], No. 2834/58. Class 83 (3). [Also in Groups XXVIII and XXIX] A plunger 12 for clamping work to a machinetool table is carried by a piston 14 operated by hydraulic or pneumatic pressure in a cylinder 1. Packing 15 in an endless groove in the piston separates the opposite ends of the cylinder so that, in the position shown, fluid passes from inlet 2 to the space 17 to force the piston to the left, but on rotation of the piston through 180 degrees by a handle 16, space 17 is connected to outlet 3 and inlet 2 is connected to space 18 to move the piston to the right. The handle 16 may be connected to the other end of the piston, and may be splined thereto so that it does not move axially with the piston. The packing 15 may have a different shape from that shown.
Patent GB-1009511-A (GB)
Title: Preparation of benzene
Inventor: LORZ WALDEMAR
IPC: C07C5/41
Filed: 1963-01-23
Abstract: Benzene is obtained in at least 75% theoretical yield from n-hexane by treatment at 550-580 DEG C., 300-1500 mm. Hg, and 0.2-2 wt./vol./hr. with a hydrogen to hydrocarbon mol ratio up to 3 : 1 in the presence of a catalyst containing 10-25% chromium expressed as Cr2O3, 0.8-1.5% sodium expressed as Na2O and the balance alumina derived from alumina beta trihydrate.  The feed may contain other hydrocarbons but should contain at least 30% by volume n-hexane and boil in the range 50-75 DEG C.  The catalyst support is preferably calcined in a steam atmosphere at 454-538 DEG C. for 1-3 hours to obtain a product having a surface area of 150-200 m.2/g. and the finished catalyst is calcined in steam at 746-774 DEG C. for 3-6 hours.
Patent GB-500317-A (GB)
Title: Improvements in welding and apparatus therefor
IPC: F23D14/54
Filed: 1938-01-29
Abstract: 500,317. Blowpipe burners. LINDE AIR PRODUCTS CO. Jan. 29, 1938, No. 2875. Convention date, Jan. 29, 1937. [Class 75 (i)] [Also in Group XXII] In a welding blowpipe, the welding jet has on either side thereof a flanking jet. The blowpipe tip may consist of a rectangular body T having two long parallel sides and two short inclined sides. A central welding jet 11 is provided together with flanking jets 13, preferably of smaller size, on each side thereof in a plane transverse to the seam and extending in a direction parallel to the short sides of the body. The under side of the nozzle is inclined as at 15 to provide a weld rod preheating jet 14, which is at an angle of 30‹ to the main jets, and as at 17 to provide a pair of mutually divergent jets 16, each at an angle of 55‹ to the main jets to preheat the work in advance of the main jets. In a modification, the body may be welded to a separate nipple and may have a large central passage from which the jet passages proceed adjacent the front of the tip. The Specification as open to inspection under Sect. 91 states that a single work preheating jet may be used and more than one rod preheating jet. This subject-matter does not appear in the Specification as accepted.
Patent GB-1387373-A (GB)
Title: Producing high purity gold powder
IPC: B22F9/24
Filed: 1973-01-19
Abstract: 1387373 Producing gold powder ANGLO AMERICAN CORP OF SOUTH AFRICA Ltd 19 Jan 1973 [21 Jan 1972] 2893/73 Heading C7D Gold bearing material, such as Merrill slime produced by adding Zn dust to Au-containing cyanide solutions, is contacted with agitation with a gold chloride solution to cement Au therefrom and dissolve base metal impurities from the material; the cemented material is separated from the solution and is then suspended in water; the suspension is chlorinated with chlorine gas and the residual solids separated from the solution from which Au is precipitated by reduction, and the Au powder is separated, washed and dried. Less than the stoichiometric amount of the reductant may be used in the precipitation stage and the residual solution recycled to the cementation step. A suitable reductant is sodium metabisulphite. A washing schedule for the gold powder is described.
Patent GB-176301-A (GB)
Title: Improvements in or relating to fuel supply apparatus on internal combustion engines
IPC: F02M1/00
Filed: 1920-11-29
Abstract: 176,301. Russel, E. W. Nov. 29, 1920. Vaporizers, external.-In an engine in which light and hea y fuel mixtures may be supplied separately, o@ in combination to the induction pipe, as desribed in Specification 176,118, the throttle valve also controls additional air to which exhaust gates may be added. Light and heavy fuel reservoirs 1, 2, Fig. 1, supply separate nozzles, as described in Specification 176,118, and the air tules around the nozzles discharge into a horizontal part connected with a pipe 3 containing baffles 5 and passing through the exhaustpipe 4. The pipe 3 is, at the end 30, divided longitudinally at 31 to provide rich mixture and extra air passages, both controlled by a throttle valve 29, the extra air inlet being provided with an adjustable flap 32. The throttle valve is pivoted in the plane of the dividing partition 31. Above the pipe 30 is an adjustable choke tube 3. A by-pass recess controlled by a screw may be provided below the choke tube, the lower surface of which may conform approximately to that swept out by the edge of the throttle valve. Exhaust gases may be admitted to the extra air intake by a valved pipe 39. In a modification, the rich mixture pipe 47, Fig. 4, passes through a gland 4S and a, perforated air inlet cap 49, and is suirounded by a choke tube 33 loaded by a spring 44 adjustable by a ring 45. The choke tube is actuated by suction, its lower position being determined by a stop 46 on the pipe 47 which may be adjustable. Light fuel may be supplied to the induction pipe through a valved passage 41, at starting.
Patent GB-1071258-A (GB)
Title: Polyamide filaments
IPC: D01F6/60
Filed: 1965-01-22
Abstract: A fibre is spun from a melt blend of 95-50% of polyamide A and 5-50% of polyamide B, A having a second order transition temperature of up to 120 DEG  C. and a m.p. of at least 180 DEG  C. and B having a second order transition temperature of at least 140 DEG  C. and being a copolymer of hexamethylene isophthalamide and at least 1.5% of hexamethylene 5-tert-butyl-isophthalamide units.  A may be hexamethylene adipamide.  Delustrants, antioxidants and photostabilizers may also be present.  The product may be used as tow staple, tyre cord, carpet pile, twill taffeta and other woven and knitted fabrics.
Patent GB-113817-A (GB)
Title: Improved Propeller, Fan and the like.
Inventor: DAVIES EVAN LLEWELYN
IPC: B64C11/00
Filed: 1917-03-03
Abstract: 113,817. Davies, E. L. March 3, 1917. Screw and like propellers.-Comprises fans and propellers with multiple inclined rims fitted with blades between them. Figs. 3 and 7 show a fan &c. having inclined rims c, c3, c2, c1, the inlet and outlet surfaces being parallel. Blades dare arranged between these rims and consist of plates g with flanges h. Centrifugal distortion is resisted by rods r fitted with nuts n. For propulsion, the rims are radially further apart on the inlet surface than on the outlet surface, whereas for fans, the arrangement is reversed. A number of intermediate blades d1 are fitted. In the modification shown in Fig. 5, the hub and rims are extended to prevent whirling on the inlet side and concentrate delivery on the outlet side. In another modification, the inlet and outlet surfaces lie on cone surfaces.
Patent GB-136029-A (GB)
Title: An Improved Carrier for the Shades of Electric Lamps.
Inventor: GORMLY WILLIAM JOSEPH
IPC: F21V17/06
Filed: 1919-02-10
Abstract: 136,029. Gormly, W. J. Feb. 10, 1919. Shade-holders. - Electric-lamp shades are secured between the shoulder 9 of the lamp-holder 6 and half-rings 4, which are carried by arms 3 pivoted to a ring frame 1 and are pressed into engagement with the threads on the lamp-holder by means of a helical spring ring 7 or other spring device. The half-rings are made with an internal thread so as to give a firm grip and allow slight rotational adjustment. Pressure on the arms 3 releases the shades.
Patent GB-1199245-A (GB)
Title: Crystallization Process
Inventor: LAFAY REGIS
IPC: B01D9/00
Filed: 1968-01-22
Abstract: 1,199,245. Reflux crystallization. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 22 Jan., 1968 [23 Jan., 1967], No. 3280/68. Heading C5E. [Also in Division B1] A constituent (e.g. benzene or p-xylene) is crystallized from a liquid mixture by passing the mixture up through a crystallization tower 1 from an inlet 10 in countercurrent to an immiscible cooling liquid (e.g. aqueous calcium chloride solution) from an inlet 11. Depleted liquid is withdrawn from an outlet 12 and the cooling liquid and crystals form separate layers at the bottom of the tower, the cooling liquid being withdrawn through an outlet 13 and the crystals (suspended in recycled melted crystals from a pipe 5) being withdrawn through an outlet 4 having a cover 7. The crystals are then passed down through a reflux tower 2 to form a bed on a grid 9 and are progressively melted by a heater 8. A portion of the melt is returned up tower 2 as reflux and recycled to tower 1 via pipe 5 while the remainder is withdrawn from outlet 14 as product after separation from further immiscible liquid which is withdrawn through an outlet 15. The level of immisible liquid in towers 1 and 2 is maintained constant by means of level sensing devices connected to valves in outlets 13 and 15. The level of crystals in tower 2 is similarly maintained constant by means of a level sensing device connected to heater 8. In a modification (Fig. 3), the crystals are upwardly removed from tower 1 through an outlet in the side of the tower (cover 7 being dispensed with) and are then passed to a separate reflux tower 2. In a further modification (Fig. 2), the second step of removal of cooling liquid is dispensed with. The ratio of reflux to product may be 0À1-2.
Patent GB-1032677-A (GB)
Title: Improvements in packaging machines
Inventor: BURGESS WILFRID
IPC: B65B43/10
Filed: 1964-01-25
Abstract: 1,032,677. Packaging-machines. BEMROSE & SONS Ltd. April 26, 1965 [Jan. 25, 1964], No. 3308/64. Heading B8C. Flat carton blanks as shown in Fig. 1 are supplied from a stack to a station 1, Fig. 2, on a turntable 10 of an intermittently rotated forming, filling and closing machine which, at station 2, forms the blank to channel-shape and pre-creases the ends, fills articles P on to the formed blank at station 3, raises the lid and closes it at stations 4 and 5 respectively and ejects the closed carton at station 6. A movable suction device 32, Fig. 4 (not shown), withdraws a blank from the stack 31 (at station 1) and places it on a forming member 20, 21 where pins 22 register with notches in side gussets g, h of the blank. A die 40, Fig. 5 (not shown), descends causing the side members of the blank to be turned up (at station 2), and a crease a on a base T to be flexed by a fixed member 45. The front wall L2 of a lid L is turned up, gussets i, j being broken simultaneously with gussets g, h which are engaged by spring- loaded balls 48. Rebates 49 in the forming member 20, 21 hold down the partially erected container. The artieles P are fed in (at station 3) either by an automatic pusher 50 or by hand. A fixed blade 52, Fig. 8 (not shown), turns up the end T2 of the carton (at station 4), the lid L being raised and turned over by a roller 61 operated by fluid pressure cylinder 57 through a rack and pinion 55, 56. Fixed ploughs 65-68, Fig. 9 (not shown), locate the carton (at station 5), and a plate 70 carrying tongues 71 is lowered to support the carton back wall. A ram 75, Fig. 10 (not shown), causes a nosepiece 79 to engage the carton tongue L3 against the slit T3, enabling the lid to be pressed home by a ram 80. A cam-operated arm 85 ejects the filled and closed carton (at station 6), and heat may be applied, either on ejection or subsequently, to heat-seal pre-coated areas of the carton. Stations 1, 2 and stations 3, 4 may be combined respectively.
Patent GB-193257-A (GB)
Title: Improvements in chimney tops
IPC: F23L17/02
Filed: 1922-02-06
Abstract: 193,257. White, C. Feb. 6, 1922. Chimney tops.-A chimney top of the kind comprising an inclined portion b connecting upper and lower vertical portions c, a, has three louvres d surmounted by a conical cap e at the upper end of the part c. A short pipe f opens into the bend b near the top thereof, this opening serving to prevent downdraught and also to admit air to increase the updraught.
Patent GB-1369174-A (GB)
Title: Electric switches
IPC: B60R22/48
Filed: 1973-01-23
Abstract: 1369174 Mechanical switches SWITCHES Inc 23 Jan 1973 3409/73 Heading H1N A seat-operated electric switch assembly for use in a seat belt warning system comprises a pair of elongated contact strips 30, 32, Fig. 2, mounted in spaced relation in a hollow resilient non-conductive member 42 supported within a recess 60 of a seat cushion containing an elongated actuator strap 28, Fig. 4, of sufficient rigidity to normally remain in a substantially planar condition when no external force is applied. The strap 28 may have detent projections 50 engageable with the upper surface of the resilient member 43 which may have a rounded cross-section on its lower surface and is preferably supported on a second semi-rigid elongated strap 44. The assembly is enclosed within a flexible bellows sheath 52 and bound by flexible tape 48 at its ends which also supports the electric lead 49. The flexible elongated switch unit may be of the type disclosed in Specification 1,218,506 the upper contact strip 30 having a series of transverse ribs 40 and the lower strip having a single central bead 42. The switch is used in series with a switch in the seat belt which is normally closed when the seat belt is not fastened whereby a warning signal is given as soon as a passenger sits down without fastening the seat belt. In a modification the flexible switch assembly is supported on a membrane (102), Fig. 9 (not shown), of a sheet of resinous material and is covered by woven metal wire fabric (100) attached by staples (106) to the membrane (102) and enclosing the semi-rigid actuator straps (28).
Patent GB-698310-A (GB)
Title: Improvements in or relating to absorption refrigeration systems
IPC: F25B49/04
Filed: 1952-02-08
Abstract: 698,310. Refrigerating. CARRIER ENGINEERING CO., Ltd. Feb. 8, 1952 [Aug. 7, 1951 ], No. 3438/52. Class 29. In the absorption refrigerating system described in Specification 698,309, the need to supply the steam to the generator 6 at constant pressure is obviated by regulating the concentration of solution leaving the generator in accordance with the difference between the temperatures of that solution and of the condenser. As shown in Fig. 1, the valve 40 in the condensing water pipe is actuated by compressed air, the pressure of which is controlled by thermal element 45 responsive to the temperature of water from the evaporator 4 and by a venting flap 49 actuated differentially by bellows 56, 57 connected to thermal elements 46, 47 responsive to the temperature of the solution leaving the generator and to the condenser temperature respectively. Valve 40 may alternatively throttle the flow of condensate between the condenser and the evaporator, Fig. 4 (not shown). Specifications 639,416 and 658,914 also are referred to.
Patent GB-566293-A (GB)
Title: Improvements in the cushioning of reciprocating pumps or liquid lines for pumping liquid refrigerant in a refrigerating system, for the purpose of avoiding liquid hammertherein
IPC: F25B41/00
Filed: 1943-03-02
Abstract: 566,293. Cushioning pumps and liquid lines. ELLIS, HARDIE, SYMINTON, Ltd. March- 2, 1943, No. 3449. Convention date, March 2, 1942. [Class 102 (i)] For cushioning purposes, a reciprocating pump, or a liquid line f leading therefrom, communicates With a chamber a, the lower portion of which contains vaporizing means for the liquid, and the upper portion of which contains one or more electric or steam heating elements l to form a gas cushion in the space k. The vaporizing means may comprise perforated plates e, e<1> and loosely-packed steel turnings or the like d, d<1>. A pipe h may introduce heated liquid into the chamber' a between its heated portion and the incoming cold liquid, whilst a pipe g communicates with the expansion header of a refrigerating system.
Patent GB-610305-A (GB)
Title: Improvements in and relating to combined transformers
IPC: H01F38/36
Filed: 1944-02-24
Abstract: 610,305. Combined current and potential transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 24, 1944, No. 3464. Convention date, Feb. 26, 1943. [Class 38 (ii)] In a combination of two transformers, the primary and secondary windings 18, 17 of, say, a potential transformer, are interlinked by a closed ferromagnetic core 15, whilst the primary and secondary windings 25, 33 of, say, a current transformer, have separate magnetic cores 26, 32 which are electrically interlinked by a short-circuited turn or winding 28 provided by the core 15. The winding 28 comprises a copper strip with the ends bolted and brazed together. The combination is housed in a metal casing joined to an insulator for the high voltage conductors.
Patent GB-707457-A (GB)
Title: Improvements in and relating to vapour electric discharge apparatus
Inventor: SMART DAVID LORIMER
IPC: H02M7/15
Filed: 1951-02-14
Abstract: 707,457. Rectifying. ENGLISH ELECTRIC CO, Ltd. Feb. 8, 1952 [Feb. 14, 1951], No. 3578/51. Class 38 (2) An electric discharge device installation has parallel vapour discharge paths connected to an external circuit through one or more inductances arranged so as to increase the effective voltage across any discharge path not taking its full share of the total current, a substantially non- inductive resistor, which may be of the voltage dependent type, being connected between the discharge paths at the ends thereof associated with the inductance(s). The value of the resistor is such that, whatever the distribution of current among the discharge paths, the effective voltage across any discharge path will not be increased by more than one-tenth of the mean effective voltage across any discharge path in its non- conducting state. A load of 40 amperes is arranged to be supplied over two discharge paths represented by anodes 14, 15 which anodes are connected to the ends of a so-called "balance choke 16, the centre tap of which is connected to a line 17. Between the two anodes and in shunt with the choke is connected a substantially non-inductive resistor 18 of 5 ohms. Should now the full 40 amperes be taken on the anode 14, approximately 20 amperes will flow to this anode over the left-hand part of the choke 16 and a further 20 amperes will flow to the anode over the right-hand part of the choke 16 and the resistor 18. There will thus be a voltage drop along the resistor 18 of some 100 volts which will appear as an additional positive voltage on the anode 15 so that that anode will pick up, the current in the resistor will fall to zero and balance thus established. The " balance choke" may be replaced by " drop choke." Where three or more discharge paths are operating in parallel to a load the non-inductive resistors may be connected between the anodes and a common point, which point may be connected to a line. In further embodiments the invention is shown applied to discharge paths in parallel which paths are of the type having high voltage potential dividing grids.
Patent GB-806949-A (GB)
Title: Production of pharmaceutical preparations
Inventor: MELVIN PHILIP ALEXANDER
IPC: C12N7/06
Filed: 1956-02-06
Abstract: A process for producing material containing antigens, in which the infectivity of infectious micro-organisms is destroyed while retaining the antigenic properties of the micro-organisms, comprises subjecting infectious micro-organisms, i.e. virus, rickettsiae or bacteria, and/or antigens thereat, to the action of a compound of formula <FORM:0806949/VI/1> in which R is methyl, ethyl, n-propyl or isopropyl.  Examples of materials treated are equine encephalomyelitis virus, the Lansing (mouse adapted) poliomyelitis virus, R. Burnetti or staphylococcus albus, and the preferred compound is N-acetylethyleneimine.  Preferably the micro-organisms is in the form of an aqueous suspension, e.g. 20 per cent w/v with or without a buffer, e.g. sodium hydrogen phosphate to buffer at pH8, and aminal tissue, e.g. guinea-pig brain or mouse brain and cord may also be present.  The inactivating compound is added at a low temperature, e.g. 0-37 DEG  C. and is preferably within the concentration range of 0.005 per cent v/v. to about 1 per cent v/v., based on the combined volume of the aqueous suspension of the microorganism and the solution of said compound.  The product is freeze dried in ampoules to produce a solid material that may be reconstituted with the addition of water.  Non-infective preparations of micro-organisms, which possess non-toxic antigenic properties may be prepared according to the process of the invention.  Specification 806,950 is referred to.
Patent GB-510363-A (GB)
Title: Improvements in or relating to mechanical torque indicators
IPC: G01L5/24
Filed: 1938-02-04
Abstract: 510,363. Torque-indicating devices. PRECISION WIRELESS DEVICES, Ltd., and NADEN, J. H. Feb. 4, 1938, No. 3600. [Class 106 (ii)] A device for applying an indicated torque to a nut comprises a torsion bar one end of which has the torque applied to it and the other end of which is provided with a'spanner head, and apparatus for indicating the torsional deflection between the point of application of the torque and the point of transmission to the nut. The main torsion bar 1 is shouldered at 2 to form a projecting spigot 3. This is non-round in section and is intended to be engaged in a boxspanner head. Above the spigot 3, a portion 4 is also non-circular but at the lower part 4a is circular. The upper part of the bar 1 has a portion 5 which is non-circular. Between the ends the bar is circular. It is surrounded by a sleeve 6 which is hexagonal or non-circular. The portion 5 fits closely within the sleeve and is anchored thereto by a locking screw 7. The lower end 8 of the sleeve 6 is machined to receive and form a bearing for the, circular part 4a of the bar. A circular casting 10 is screw threaded on to the sleeve 6 and houses the indicating mechanism. A rod 11 fixed in the bush 13 to the part 3 passes through the hollow bar 1 and has a bearing in the upper bush 14. The rod 11 has a squared part 15 and a reduced circular part 16 at the top. The part 15 carries a rack arm 17 meshing with a pinion 18 fast on a pin 19 journalled at one end in the casing 10 and at the other in a plate 24. The pin 19 carries rack arm 20 meshing with a pinion 21 secured to a sleeve 22 turning on the part 16 and carrying a pointer 23. In use, a box spanner head is placed on the shank 3 and then placed on the nut to be tightened, a spanner being applied to the exterior of sleeve 6. The torque applied to the sleeve is transmitted to the top 5 of the bar 1. The bar 1 will undergo torsional deflection and this will be indicated by the pointer 23 which moves over a scale.