baber/WOPTO huggingface dataset:
Patent GB-253587-A (GB)
Title: Improvements in or relating to the concentration of ores
IPC: B03D1/06
Filed: 1925-03-16
Abstract: 253,587. Tucker, S., and Minerals Separation, Ltd. March 16, 1925. Flotation processes. - Relates to the application of flotation processes to complex ores containing constituents from more than one of the following groups : (1) lead sulphide; compound sulphides of lead with antimony, bismuth, and silver; copper sulphides; (2) zinc blende; (3) iron pyrites; and consists in the separation of the constituents in the order named by the following steps : (a) removal of constituents of the first group in a neutral or alkaline pulp with the employment of a limited quantity of frothing- agent; (b) removal of constituents of the second group in an alkaline pulp with additional frothing- agent; (c) removal of constituents of the third group in a neutralized or preferably acid circuit liquor. If the ore contains also cassiterite and like tin-bearing minerals, these may be separated from the residue remaining after removal of the above three groups by gravity concentration. The alkali used may be caustic soda, and a copper salt may be present in the zinc blende separation. In the case of weathered and like ores, soluble constituents may be first removed by washing with water. Specifications 10929/10, 15546/12, and 21650/13 are referred to.
Patent GB-253591-A (GB)
Title: Improvements in or relating to keys for railway track work and like purposes
IPC: E01B9/50
Filed: 1925-03-17
Abstract: 253,591. Willich. J. S. de V. von. March 17, 1925. Chair keys. - Two-way keys D engaging only the rail base A and chair B have an axis of symmetry P P1 which does not pass through the rail and makes with the bed of the chair C an angle less than a right angle on the rail side. The plane of symmetry may be parallel with or divergent to the rail. The rail grooves G, G1 may be so formed that one side or part of a side engages the rail base before the other side, or the remaining part of the side. The key may contact with the bed of the chair, while part of the key may have to be removed to prevent fouling the chair. For lightness, the key may be ribbed or corrugated. Specification 253,592 is referred to.
Patent GB-1009180-A (GB)
Title: Cordless electric drill
IPC: H02K7/14
Filed: 1963-02-22
Abstract: 1,009,180. Portable drilling machines. BLACK & DECKER MANUFACTURING CO. Feb. 22, 1963 [March 5, 1962], No. 7186/63. Heading B3C. A cordless electric drill 10 comprises a casing 11, having an end handle 15 and a pair of hollow side handles 16, 17 secured to the casing, which carry rechargeable nickel cadmium, or silver cadmium, cells 18, 19 for driving a motor, which rotates a chuck 14 through a two-speed gear-box 13. A trigger 54 is adapted to be locked either in the on or the off position by a pin 63, Fig. 7, which is secured to a sliding rod 59. In the off position pin 63 is received in a hole 63b in the trigger, Fig. 7, and in the on position pin 63 engages the end face of the trigger, Fig. 8.
Patent GB-238806-A (GB)
Title: Improvements in or relating to the manufacture of boots or shoes
IPC: A43D11/00
Filed: 1924-05-19
Abstract: 238,806. British United Shoe Machinery Co., Ltd., Gouldbourn, J., and Ricks, F. May 19, 1924. Pulling-over.-In a shoe-making method of the general kind described in Specifications 206,176 and 206,438 the last is inserted in the shoe after both the moulded toe and heel ends of the upper have been tacked to the insole. To facilitate the lacing of the upper the last is then mounted on a device, Fig. 1, which includes a heel pin 711 on a frame 715, and is broken by a curved arm 721 which is forced upwardly by, a treadle rod 727. The arm 721 has at its upper end a roll 725 and flanges 723 to embrace the upper. After lacing, the last is straightened and the upper is pulled over at points in rear of the tip line in a machine for example of the kind described in Specification 7005/00. modified by the replacement of the usual toe-end pincer and tacker mechanisms by a toe abutment 737, Fig. 3, and by the provision of a single pincer 741 at each side. At least one of the pincers is preferably given a movement longitudinally of the shoe, in addition to the usual updraw and overdraw movements by arranging the guide groove 743 for the slide 749 (see the slide 242 or 244 in Specification 7005/00) to be adjustable out of parallelism with the axis of the pincer. The lasted portion is secured by tacks.
Patent GB-750154-A (GB)
Title: Improvements in or relating to rolling mills for cold-rolling of metal sheet or strip
Inventor: FRANCE WILLIAM
IPC: B21B13/14
Filed: 1953-03-16
Abstract: 750,154. Rolling. OSBORN & CO:, Ltd., S., and THORNTON, Ltd., B. March 8, 1954 [March 16, 1953], No. 7200/53. Class 83 (4). In a cold rolling mill for metal sheets or strip in which the rolls 12, 13, Fig. 3, are journalled throughout their length in half bearings 14 and lubricant is conveyed to the bearing surfaces, resilient sealing members 26, 33 are provided in edgewise contact along the length of the rolls to retain the lubricant. In one example lubricant reservoirs 22 in each bearing 14, enclosed by a plate 23 are fed with oil under pressure at an inlet 24 and communicate with the roll surface through passages 25. The seals 26, 33 are mounted in grooved plates 29, 36 bolted to the roll supporting member 16 and are pressed into engagement with the rolls by pneumatic or hydraulic flexible tubes 31. The grooved plates 29, 36 may act as work-guides. In a modification the reservoir 39, Fig. 5, is in the rollsupporting member 16 and communicates with the roll surface through ports 40 leading to channels 43, 44 at the edge faces of the bearing 14. An additional seal is provided by " U "- section leather strips 42, 45 attached by plates 41, 46 to the supports 16. Pass adjustment is provided by a member 18a (not shown) engaging a slanting face on the top of the roll supporting member 16 which is supported by spring-loaded bolts 18 (not shown).
Patent GB-372462-A (GB)
Title: Improvements in or relating to apparatus for separating water from dredged material
IPC: B01D33/00
Filed: 1931-03-09
Abstract: 372,462. Rotary strainers ; gravityseparation apparatus. VERSTOEP, D., 809, Laan van Meerdervoort, The Hague. March 9, 1931, No. 7218. Convention date, March 7, 1930. [Class 46.] In apparatus for separating water from dredged material such as sand or gravel, the mixture of liquid and solid is supplied through a pipe o to a trough n, which has perforated walls for the discharge of water and outlet openings, controlled by a slide, in the base, through which the solid material is delivered to compartments b of a wheel a. More water drains from the sand &c. through gauze-covered apertures in the lateral walls of the compartments b and the sand is lifted as the wheel rotates and discharged through one or other of two shoots q. An endless band p covers the open ends of the rising compartments, and a flap r can be turned over to close the upper end of either shoot q. The outer circumference of the wheel carries a toothed ring gearing with a wheel h driven by a motor k. The Specification as open to inspection under Sect. 91 (3) (a) describes also (a) tanks for separating sand &c. from water which have overflow gutters for water, apertures covered with gauze in the walls and jalousie flaps in the base through which solid matter is delivered to a belt conveyer, (b) an arrangement in which a number of such tanks form compartments of a horizontal drum mounted to rotate about a vertical axis, each compartment being brought successively under supply pipes and moved into positions where the sand from the flaps is delivered into shoots, (c) an arrangement comprising two wheels on horizontal axes with wedge-shaped compartments opening outwardly, the sand and water being supplied to each compartment when it is in its uppermost position. This subject-matter does not appear in the Specification as accepted.
Patent GB-203289-A (GB)
Title: Improvements in apparatus for casting iron pipes
Filed: 1923-03-13
Abstract: 203,289. Kubota, G. Sept. 1, 1922, [Convention date]. Moulds; clamping and guiding moulds.-Pipes are cast in relatively thin metal moulds so supported that local deformation in the mould may be corrected during clamping. The meeting edges of the mould parts are flanged at 9 and inclines 8 are provided on the flanges to show when the parts are properly registered. Ribs c on the parts have dovetail enlargements A slidably to engage brackets 6, 7 and rectangular enlargements B to engage corresponding brackets. Terminal enlargements 5 of the ribs rest on the upper brackets and suspend the mould in a manner permitting longitudinal expansion. The brackets 7 have wings d to align the moulds laterally by engaging the flanges 9. The Specification as open to inspection under Sect. 91 (3) (a) states that in the case of large diameter pipes the mould may be divided with three or more parts, one part being fixed, and refers specifically to the centreing and fixing of the core. This subject-matter does not appear in the Specifications as accepted. Casting-machines.-The brackets 7 are carried by a fixed abutment or wall and the brackets 6 are carried by a plate which is reciprocated to and from the casting position hydraulically. Casting processes.-The pipe is removed from the mould whilst red hot and left to contract freely.
Patent GB-872399-A (GB)
Title: A continuous process for the production of "beer"
IPC: C12C11/00
Filed: 1957-07-26
Abstract: The subject-matter of this Specification is identical with part of that described in Specification 872,391, but the claims are directed to adjusting the pH of the inflowing wort, before substantial fermentation or yeast propagation is allowed to take place, by mixing with the wort liquid recirculated from a later stage of the fermentation.  Specifications 872,392, 872,393, 872,394, 872,395, 872,396, 872,397, 872,398 and 872,400 also are referred to.
Patent GB-434737-A (GB)
Title: Coking process
IPC: C10B55/02
Filed: 1934-03-08
Abstract: 434,737. Coking process. BRASSERT & CO., Ltd., H. A., and BRASSERT, H. A., Brook House, Walbrook, London. March 8, 1934, Nos. 7451 and 8239. [Class 55 (i)] Coal or other solid fuel is coked by being charged into a horizontal oven which is heated mainly through the floor, and liquid hydrocarbons are sprayed on to the surface of the charge from the roof of the oven. These hydrocarbons may be added continuously, or at certain stages, and particularly towards the end of the process. The floor and sides of the oven chamber may be lined with tiles of silicon carbide, fused alumina, aluminium silicate, or other refractory material of high heat conductivity.
Patent GB-223813-A (GB)
Title: Improvements in polishing and cleaning mops
IPC: A47L13/252
Filed: 1924-03-25
Abstract: 223,813. M÷ller, S. A. Balk-, and Madsen, A. P. C. March 25, 1924. Pivoted handles.-A mop handle 5 is secured to the mop head by means of a socket member with prongs 24 adapted to engage in holes in the spring 13. The prongs may be resilient.
Patent GB-199124-A (GB)
Title: Improvements in or connected with the construction of accumulator and accessory carrying cases for motor cycles and the like
IPC: B62J9/00
Filed: 1922-03-15
Abstract: 199,124. Playfoot, R. H. March 15, 1922. Batteries, mounting; tool &c. containers.-A device for resiliently supporting cases E for accumulators and accessories on a motor-cycle carrier A comprises two or more vertical bars C on each side of the carrier and clipped to it at c, the bars being joined at their lower 'ends by bars D between which pass bolts h passing also through U-clips H engaging the inclined carrier stays B. The bars C have vertical slots c<1> in which bolts e slide freely and support projecting parts e<1> of metal straps e<2> secured to the cases E. Springs F, G are so connected to the cases and to the bars C or D as respectively to absorb the downthrust and the recoil of the cases. The Provisional Specification describes the members e<2> as angle-brackets, one arm of each of which is secured to the back of the case E, the other arm projecting to form one of the members e<1>.
Patent GB-728547-A (GB)
Title: Refractory materials and the use and production thereof
IPC: C04B35/44
Filed: 1953-03-19
Abstract: An oxide of the formula CrO.Cr2O3 is prepared by heating, at above 1,700 DEG  C. in an oxidizing atmosphere, a mixture of chromium and chromic oxide in the presence of not more than 5 per cent. of a flux of alkali or alkaline earth metal salt, which may itself supply the oxidizing atmosphere, e.g. a nitrate, chromate or chlorate.  The chromium starting material may contain carbon which is burned out, leaving a porous product.ALSO:A sintered refractory material consists essentially of the oxide CrO.  Cr2O3 alone or admixed with an oxide of iron.  It is prepared by heating at above 1700 DEG C. in an oxidizing atmosphere a mixture of either crushed chromium and chromic oxide, or a mixture of ferrochrome and chromite, in the presence of not more than 5 per cent of a flux of an alkali metal or alkaline earth metal salt.  The salt can itself provide the required oxidizing atmosphere, e.g. a nitrate, chromate or chlorate.  The chromium or ferrochrome can contain carbon which is oxidized leaving a porous product.  Binders for mouldability, e.g. tar, silicic acid and limes may also be present.
Patent GB-780275-A (GB)
Title: Improvements in or relating to the hydrogenation of furan derivatives
IPC: C07D307/00
Filed: 1955-03-16
Abstract: The ring structure of compounds having the furan nucleus is hydrogenated by contacting the compounds in the vapour phase with a hydrogen-containing gas in the presence of a nickel catalyst at a hydrogenating temperature below 120 DEG  C.  Suitable starting materials are furfural or furfuryl alcohol which on hydrogenation give tetrahydrofuryl alcohol.  The reaction is carried out at a pressure not substantially in excess of atmospheric pressure. Preferably the catalyst is a reduced nickel catalyst which may be supported on, for example, kieselguhr, alumina, pumice, alundum or charcoal.  The catalyst may also be modified to incorporate basic substances such as sodium silicate, calcium oxide or magnesium oxide. In the examples furfuryl alcohol is treated with hydrogen in the presence of a nickel catalyst to give tetrahydrofurfuryl alcohol.
Patent GB-235662-A (GB)
Title: Improvements in or relating to terminals for electrical accessories
IPC: H02G3/18
Filed: 1924-03-26
Abstract: 235,662. Tucker & Co., Ltd., J. H., and Gaffney, J. E. March 26, 1924. Contacts. - Tumbler switches are provided with plug and socket terminals constituting a readily detachable connection between the fixed contacts of the switch and the electric leads. The incoming lead 3 is secured by screws 13 in a socket 12 on the plug 4 sliding in a socket 5, which is connected to one of the fixed contacts of the switch. The exterior of the socket 5 is screwed to enable it to be secured in the insulating base 8 of the switch. The head of the screw 13 is mounted in an insulating cup 14 extending upwardly beyond the head 13 so that it is held down by the cover 15 of the switch, preventing accidental removal of the plug 4.
Patent GB-1103283-A (GB)
Title: Balance wheel assembly for an electric timepiece
IPC: G04C3/06
Filed: 1966-02-22
Abstract: 1,103,283. Clocks and watches. TOKEI KABUSHIKI KAISHA. Feb. 22, 1966 [Feb. 22, 1965; March 1, 1965; March 31, 1965], No.7661/66. Heading G3T. A timepiece balance wheel loaded by a hair spring 2 comprises a pair of plates 3, 4 made of a magnetically permeable material on which are fixed magnets 7, 8 and 9, 10, a stationary search and drive-coil assembly 11 and a transistor circuit, which amplifies pulses induced in the search coil and feeds them to the drive-coil to maintain the oscillation of the balance wheel. Each plate 3, 4, which is fixed to the balance wheel shaft 1, has weights 5, 6 to counterbalance the magnets. By making the plates 3, 4 of pure iron, steel, Permendur (Registered Trade Mark) &c., flux paths are formed around the peripheries of the plates and stray flux from the magnets is reduced to a minimum. The edges of the plates 3, 4 may be inwardly turned to strengthen the plates and further reduce stray flux. The coil assembly 11 is wound on a ring core and covered by layers of polyester, nylon &c. The oscillation of the balance wheel is maintained by a transistor circuit which incorporates a fixed biasing resistor (R) and a variable resistor (VR) for adjusting the oscillation amplitude. A self-oscillation suppressing condenser may be connected between the transistor collector and base and the fixed circuit elements are embedded in a block of insulating synthetic resin such as polypropylene &c. A roller is attached to the lower end of the balance wheel shaft 1 and co-operates with a conventional lever escapement. Reference has been directed by the Comptroller to Specification 746,465.
Patent GB-728212-A (GB)
Title: Improvements in and relating to photocells and apparatus incorporating such cells
IPC: H01L31/0232
Filed: 1949-03-22
Abstract: 728,212. Light-sensitive cells. MEGATRON, Ltd., VESZI, G. A., and MARKUS, P. March 22, 1950 [March 22, 1949], No. 7772/49. Class 37. [Also in Group XL (b)] A selenium barrier-layer photo-cell exhibiting a cosine law variation of output with angle of incident radiation is constructed by omitting the normal protective covering of lacquer from the photo-sensitive surface 11 and enclosing the cell within a hemispherical cover 17 of glass, plastic or like transparent material. The cover is hermetically sealed to the base support 10 by clamping ring 18, sealing gaskets being provided if necessary, and the enclosure is evacuated or filled with dry air or an inert gas.
Patent GB-1026902-A (GB)
Title: Improvements in or relating to vehicle covers
Inventor: DAVIES DAVID THOMAS
IPC: B60J11/00
Filed: 1963-02-26
Abstract: 1,026,902. Vehicle covers. QUINN SALES Ltd. May 26, 1964 [Feb. 26, 1963], No. 7773/63. Heading B7J. A vehicle cover, Fig. 1, comprises a hood-like enclosure of flexible, e.g. thermoplastic sheeting having a continuous longitudinal top wall T and side walls each divided at 1, 2 to form panels S1, S3 and S2, S4, elastic ropes 3 being secured to the adjacent edges of the panels and having hooks 4 to engage the vehicle bumpers. As described with reference to Fig. 2 (not shown), the ropes 3 of the rear panels S3 and S4 are secured to the front bumper 5 whilst the remaining ropes are secured to the rear bumper 6. In a modification the panels S3, S4 and S1, S2 respectively, may be connected by continuous U-shaped loops of elastic ropes.
Patent GB-1199664-A (GB)
Title: Closure Device for Bottles
Inventor: GOYET DANIEL
IPC: B65D41/17
Filed: 1968-02-16
Abstract: 1,199,664. Container closures. L'OREAL. 16 Feb., 1968 [1 March, 1967], No. 7806/68. Heading B8T. A closure device for bottles which ensures that a cap is placed in a particular position relative to the bottle comprises a sleeve 4 on the bottle neck and a tubular cap which has a cylindrical skirt 10 formed with projections 15 which snap over a collar 5 on the sleeve 4. The upper end of the sleeve 4 provides at least one pair of ramps 6, (7), Fig. 1 (not shown), which meet in a trough 8. The inner surface of the cap has a corresponding probe 13 which slides down the surface of one of the ramps until its end 14 is located in the trough 8. In this position the projections 15 snap over the collar 5. On rotation of the cap from the closed position, the end 14 of the probe 13 slides up the other ramp, forcing the projections 15 to move over the collar 5, thereby releasing the cap. Alternatively, the ramps may be formed on the cap and the probe on the sleeve 4.
Patent GB-558663-A (GB)
Title: Improvements in and relating to propeller blades
IPC: B64C11/06
Filed: 1942-06-08
Abstract: 558,663. Screw propellers. MILNER, H. L., and NEWPORT, H. June 8, 1942, No. 7823. [Class 114] A non-metallic blade for a propeller, fan or lifting rotor is secured at its root end to an alloy steel ferrule whose coefficient of expansion is as nearly as possible the same as and not less than one quarter of that of the blade root so that the root will not become loose in the adaptor when exposed to low temperatures.
Patent GB-1381842-A (GB)
Title: Multiple effect evaporator apparatus
IPC: B01D1/26
Filed: 1973-02-16
Abstract: 1381842 Multiple effect apparatus EBARA MFG CO Ltd 16 Feb 1973 [16 Feb 1972] 7857/73 Heading B1B In multiple effect apparatus, in which each effect comprises thin film downflow evaporation tubes 3, an overflow tube 2 is provided in each effect one end of which communicates with the pressure in its own effect, and the other end of which communicates with the pressure in the next lower effect.
Patent GB-1487009-A (GB)
Title: Pebble-bed reactors
IPC: G21C19/20
Filed: 1975-02-25
Abstract: 1487009 Pebble bed reactor cores INTERATOM INTERNATIONALE ATOMREAKTORBAU GmbH 25 Feb 1975 [25 Feb 1974 29 Nov 1974] 7865/75 Heading B6C To ensure a more-even flow of pebbles through a pebble-bed reactor, a body 6 having a conical upper surface is disposed over the conical pebble outlet 2 at the base of the core container, a plurality of passages being provided between the body 6 and the outlet 2 via which the pebbles can reach the discharge tube 3. The passages 24, 25 may be formed by the spaces between ribs or columns 7 supporting the body 6, or they may be formed in the outlet 2 itself. The body 6 consists of hexagonal graphite columns and contains coolant ducts.
Patent GB-267984-A (GB)
Title: Improvements in or relating to supports or hooks for wearingapparel
IPC: A47G25/06
Filed: 1927-03-22
Abstract: 267,984. Guillaumin, F. R. M. L. A. G. March 22, 1926, [Convention date]. Keyholes, obstructing; lock-mechanism operated by non-rotating key; padlocks.-A garment hook comprising a bracket A and a hinged member C is locked in the closed position by a ratchet mechanism, a key D being held against removal when the hook is open. A pivot pin c carries the member C and a member g having ratchet teeth h. Pawls k, pivoted at and arranged side by side are of slightly different length the difference between the longest and. shortest pawl being equal to the pitch of the ratchet teeth. A key D which is cut to fit recesses k<1> of varying depth in the pawls is inserted in the slots n to disengage the pawls. The member U is then moved to open position by a spring (not shown) coiled round the pin c, an arm s causing a tooth r on the bellcrank lever p to engage the key. The tooth r is released by the spring u when the member C is moved to the closed position so that the key can be removed. In a modification, the pin s acts directly on a single-armed lever to disengage the tooth r, a spring causing the tooth to engage the key when the lever is released. The hooks A, C have rubber pads a, d at their ends.
Patent GB-1092820-A (GB)
Title: Improvements relating to the lubrication of gas turbine engines
IPC: F16C33/76
Filed: 1966-02-23
Abstract: 1,092,820. Bearings, lubricating. GENERAL ELECTRIC CO. Feb. 23, 1966 [March 1. 1965], No. 7924/66. Heading F2A. [Also in Division F1] In a gas turbine engine assembly an engine rotor is supported in bearings, and a lubricant conduit 35 has one end slidable in a connector 44, a seal 42 being positioned between the end and connector, and a passage carrying lubricant from the conduit end to the bearings, part of the passage surrounding the connector 44 so that the lubricant cools the seal. In Fig. 3, connector 44 is positioned in support 26 with a surrounding annular space 46. Annular ribs 40 on the conduit end abut a cylindrical wall of the connector and locate radially compressed 0-ring seals 42. Lubricant flows from conduit 35 through port 51 in the cylindrical wall, around baffle 54 in space 46 and via port 52 to passage 53. In Fig. 2 conduit 35 extends through a strut 27 across high temperature fluid passage 16a and in Fig. 5, (not shown) conduits extend through struts (80, 81) and vanes (82, 83) across both high temperature and bypass passages.