baber/WOPTO huggingface dataset:
Patent GB-865972-A (GB)
Title: A method of preparing octahydrophenanthrene carboxylic acids with estrogenic activity
IPC: C07C51/363
Filed: 1957-08-09
Abstract: Substituted 1, 2, 3, 4, 9, 10, 11, 12-octahydrophenanthrene-2-carboxylic acids of the general formula: <FORM:0865972/IV (b)/1> wherein R1 represents a methoxy, ethoxy or hydroxy group, R2 represents a methyl group and R3 represents an alkyl group containing 1 to 3 carbon atoms, are prepared by heating alicyclic lactones of the general formula:  <FORM:0865972/IV (b)/2> wherein R1 represents a methoxy or ethoxy group and R2 and R3 have the above significance, with catalysts of the Friedel Crafts type in the presence of free hydrogen halides. Suitable catalysts are aluminium chloride, stannic chloride and boron trifluoride.  The compounds in which R1 represents a hydroxy group may also be prepared by dealkylation of the corresponding compounds in which R1 represents a methoxy or ethoxy group e.g. by heating with the hydrochloride of a nitrogen base such as pyridine hydrochloride.  The above processes always yields a mixture of stereoisomeric carboxylic acids of the above general formula which may be resolved by methylation to form the corresponding methyl esters e.g. with dimethyl sulphate in an alkaline aqueous solution, and/or by heating with excess diazomethane in ether solution separating the methyl esters by fractionating the methyl esters under reduced pressure or by submitting them to chromatography, saponifying the methyl esters by heating at 170-180 DEG C. with excess potassium hydroxide wetted with alcohol and water, and purifying the free acids by converting them into their sodium salts, recrystallizing the salts from aqueous solutions and isolating the free acids by acidification. In the examples the following compounds are prepared:- 1-ethyl-2-methyl-7-methoxy (and hydroxy)- 1, 2, 3, 4, 9, 10, 11, 12-octahydrophenanthrene-2-carboxylic acid and the corresponding methyl esters.  Specification 830,082 is referred to.
Patent GB-152516-A (GB)
Title: Improvements in or connected with mechanically propelled tip wagons
IPC: B60P1/16
Filed: 1919-10-14
Abstract: 152,516. Bell, W. T., and Bretherton, F. J. Oct. 14, 1919. Tipping-wagons.-The body of a mechanicallypropelled tipping-wagon is tipped by means of a telescopic hydraulic jack B pivoted in brackets H on the chassis and fitted with pins C<1> engaging blocks D on the front of the body, the ram being connected to any power when connected with the vehicle or separate therefrom. Two sets of tiping fulcra K, L at different levels are provided on the chassis, these fulcra engaging with brackets I, J on the body.
Patent GB-208242-A (GB)
Title: Improved apparatus for measuring and delivering liquids
IPC: B67D7/16
Filed: 1922-09-18
Abstract: 208,242. Shugg, C. B., and Harper, A. Sept. 18,1922. Fixed-chamber apparatus; with several chambers; controlling passage of air; valve systems : varying quantity measured in.-In apparatus of the kind in which the liquid is drawn from a storage tank into the measuring-chamber by suction and the excess removed through an overflow pipe, a plurality of measuring-chambers is used, each with a fixed overflow pipe which also acts as the suction pipe, and the suction and delivery valves are interconnected so that as one chamber fills another discharges. A vessel 2 is divided by a partition 6 into two separate measuring-chambers 3 and 4, the latter being again divided by a perforated partition 5, overflow openings 7 being situated at the top of each chamber and supply pipes 36 leading from the storage tank 16 to each of the separate chambers 3. 4. Pipes 8 connect the overflow openings to a valve 9 by means of which any one pipe can be put into communication with a chamber 18 exhausted through a pipe 24 and connected through a non- return valve 22 with the storage tank, so that any one chamber can be filled by suction and is prevented from filling above the overflow opening. Interconnected with the valve 9 is a delivery valve 28 which connects a delivery pipe 31 with either of two pipes 27 leading to the bottoms of the two main chambers, so that as one chamber is filling the other may be emptied. A pointer 32 on the operating handle 34 of the suction valve registers with a scale 33 to show the different positions, and the vessel 2 may have a glass inset so that the levels may be checked. To prevent liquid being drawn into the suction pipe 24 a baffle 2b is provided in the chamber 18, while baffles 38 in the vessel 2 prevent swirling, and air-valves 41 which open when suction is removed ensure quick delivery of the measured quantities and return of excess to the storage tank. Valves 37 in the supply pipes open only during suction, and thus prevent communication between the chambers. Venturi tubes 39 may be placed in the pipes 8, 36 to increase the velocity of the liquid.
Patent GB-733638-A (GB)
Title: Improvements in or relating to electrical counting circuits
Inventor: BRAY FREDERICK HARRY
IPC: G11C19/28
Filed: 1952-10-09
Abstract: 733,638. Electronic counting - apparatus. STANDARD TELEPHONES & CABLES, Ltd. Oct. 9, 1952, No. 25324/52. Class 106(1). [Also in Group XL (c)] An electric counting chain comprises a single crystal triode CT1, CT2, &c. for each stage arranged to have two (" on " and " off ") states, means interconnecting each pair of consecutive crystal triodes whereby if the first is in its " on" state the second will be operated from its "off" to its " on " state in response to the next pulse over a common input PN and reactive means, such as condenser C2, for preventing the second crystal triode being switched to its "on'" state by thesame pulse that switched the first. As described, the " off " and "on" states correspond to low and high current flow and may be produced by applying negative and positive triggering potentials respectively to the emitter electrode E, the triggering being caused by a positive feed-back effect in the current gain portion of the characteristic of the crystal triode. In the circuit shown, the emitter of CT1 is so biased as to be triggered by the first narrow negative input pulse from PN applied in common to all the base electrodes B (a negative pulse applied to B being equivalent to a positive pulse at E), thus increasing the potential of its collector electrode C and of the emitter E of crystal triode CT2; CT2 similarly responds to the next input pulse and raises the emitter bias of CT3, and so on. The circuit may be operated also by long or variable length input pulses of either polarity applied at PS to the circuit including rectifier MR1. Various circuits are shown for obtaining an output pulse from a given stage comprising, e.g., a telephone-type relay or a transformer. In another counter (Fig. 6, not shown), the collector electrodes are coupled by condensers, so that on operation of a crystal triode the preceding crystal triode is triggered back to the " off " state, and the last crystal triode is coupled to the first to form a ring.
Patent GB-1101542-A (GB)
Title: Treatment of coal tar
Inventor: HOLDSWORTH ERNEST CLIFFORD
IPC: C10C1/20
Filed: 1966-06-07
Abstract: The chloride content of coal tar is reduced by contacting the tar with an aqueous solution of an inorganic alkali, preferably NaOH, and removing the aqueous layer, e.g. by centrifuging. The mixture is left to settle for several days during which the temperature is maintained at 50 DEG  to 100 DEG  C.  Ammonia may be used as the alkali. Specific examples are described in which the tar was from East Midlands coal carbonized in vertical retorts at 700 DEG  to 730 DEG C.  The alkali added amounts to up to one and half times the stoichiometric equivalent of the chloride ion present in the tar.
Patent GB-934618-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C27/02
Filed: 1962-07-03
Abstract: 934,618. Mineral-mining machines. GEB. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI. July 3, 1962 [July 29, 1961], No. 25354/62. Class 68 (1). Preceding the main cutter 3 of a mineralmining machine is a pre-cutter 5 that is mounted on the appropriate side, depending on the direction of advance of the machine, of that part of the gear-box 7 which transmits a drive from a motor to the main cutter and which is upstanding from the machine in which the motor is housed. A drive for the pre-cutter extends up through the gear-box to emerge out of the side thereof and pass into the precutter.
Patent GB-230390-A (GB)
Title: Improvements in or relating to pianoforte actions
IPC: G10C3/16
Filed: 1924-10-27
Abstract: 230,390. P³rrer, A. Oct. 27, 1924. Pianoforte actions; keys and keyboards.-The keys 1 are hinged at their inner ends 2 and carry the hammers 8, which are pivoted to the keys at 5, so that the hammers in falling on depression of the kevs encounter the turned-in heads of fixed wires 11 placed between the keys, and are thrown up thereby. The wires 11 also serve as guides for the keys, and by their adjustment the action can be regulated. A wire 27 carried by the hammer-shank coacts with a cushion 28 carried by the key and serves as a check. The damper 18 is raised by an extension 14 of the key. For an upright pianoforte the action is similar, except that a block on the hammer-shank actuates the pivoted damper by coacting with its tail.
Patent GB-1365401-A (GB)
Title: Hot water pump with a cooled shaft seal housing
IPC: F04D29/64
Filed: 1972-06-01
Abstract: 1365401 Axial flow pumps MASCHINENFABRIK ANDRITZ A G 1 June 1972 [29 June 1971] 25655/72 Heading F1C [Also in Division F2] A hot water impeller type pump has a shaft packing housing 9 located in a recess in the pump cover 5 such that an annular air space 10 is defined between housing 9 and the surface of the recess to assist cooling of the housing. The latter may also include cooling water passages 29 supplied via lines 30. An annular air guide member (31) Fig. 2 (not shown) having a tangential air inlet (32) may be disposed in space 10. Packing housing 9 is supported at its bottom end by a screw thread and tongue on the end of a downwards projection 8 from the cover 5. Shaft packings 11 within housing 9 are supplied with highpressure water via lines 12. Generally below housing 9 are disposed cold water storage chambers 17a, 17b which have at their upper end insulation 18 and plastic packing rings 22a at the interface with housing 9. At their lower end chambers 17a, 17b movably support the bottom shaft bearing 20, sealing being effected by a metal bellows 21. Keys 22 radially locate bearing 20 in a supporting tube 14, the latter guiding the lower end of a further supporting tube 15. Sheets of insulation fill the annular space 16 between tubes 14, 15. An annular insulating member 28 is disposed around and below bearing 20, adjacent the pump impeller 3. The diameters of the respective components are such that bearing 20 together with storage chambers 17a, 17b can be withdrawn upwards through packing housing 9. The pump shaft 1 carries detachable protective sleeves 23a, 23b and a bearing bush 24. Cover 5 is secured to pump housing 7 by bolts 6, cooling of the cover and bolts being assisted by fins (33, 36) and cooling bores (39). In a modification Fig. 4 (not shown) the pump includes an annular internal cooler welded to the bottom of packing housing 9 and formed by inner and outer shells (40, 41) braced on each other by ribs (42) defining cooling water passages (43). Fins (44) are provided on the outer surface of outer shell (41). Packing housing 9 is supported from cover projection 8 but is assembled to the latter by upwards movement of the housing rather than downwards as in Fig. 1.
Patent GB-281820-A (GB)
Title: Power-driven whisk
IPC: A21C1/06
Filed: 1926-10-15
Abstract: 281,820. Belhaven, Ltd., and Mellor, R.. Oct. 15, 1926. Stationary mixers with rotary stirrers.-In a power driven whisk of the kind comprising a container provided with trunnions about which it may be tilted, and with a detachable beater, a driving shaft penetrates one trunnion and engages the beater spindle, the shaft having a bearing which engages the trunnion, while the other trunnion is penetrated by a sleeve riding in a second bearing and surrounding a member forming a dead centre for the beater spindle. The driving shaft 4 is supported in spaced bearings 10, 11, the latter of which engages in spigot-andsocket relationship with the trunnion 2 through which the shaft 4 passes to engage the removable beater spindle 5. The shaft 4 carries a wheel 15 carrying an indication mark to facilitate engagement of the shaft with the spindle 5. The other end of the beater spindle engages a dead centre formed on a screwed member 7 in a sleeve 16 passing through the other trunnion 3 and supported in a bearing 17. The end of the sleeve 16 is screwed for engagement with a hand-wheel 19 by means of which the container may be held for mixing, or released for discharging.
Patent GB-231098-A (GB)
Title: Improvements relating to coupling members for pipes and the like
IPC: F16L27/10
Filed: 1924-10-28
Abstract: 231,098. Lava, M. Oct. 28, 1924. Couplings, disconnectible. - A coupling member for pipes &c. comprises an elastic tube 1, provided with an external rib 2, against which the ends of the pipes are adapted to abut, and a reinforcing-member 3, for preventing collapse of the tube, said member 3 being so located or shaped that it remains anchored in the tube 1. Several constructions and arrangements of reinforcing members are described.
Patent GB-388330-A (GB)
Title: Improvements in, or relating to bathing caps
IPC: A42B1/12
Filed: 1932-09-15
Abstract: 388,330. Bathing-caps. AVON INDIA RUBBER CO., Ltd., Melksham, Wiltshire, and CASEY, T. W., Fairlawn, Summit, Ohio, U.S.A. Sept. 15, 1932, No. 25705. [Class 63.] A rubber bathing-cap is provided with a textile fabric lining member 11, which can stretch circumferentially of the cap, the edge of the lining being sewn to the edge of the cap by means of longitudinally expansible stitching 13. The lining member 11, preferably, is formed of a pair of substantially similar front parts 18, and a pair of substantially similar rear parts 19, all of these parts being united by stitching 23, 24. The lining 11 may be suitably waterproofed, preferably in such a manner that the fabric is not noticeably stiffened or changed in its character.
Patent GB-220197-A (GB)
Title: A new or improved electric terminal connection
IPC: H01R11/28
Filed: 1923-10-16
Abstract: 220,197. Mousley, A. Oct. 16, 1923. Binding-posts and terminals more particularly for use in wireless apparatus and sparking plugs of internal combustion engines consist of a tubular sleeve or cap d closed at its outer end in which is formed a radial slot h communicating with a slot g of greater width formed in the wall of the sleeve. The slot g is adapted to receive a flattened head, ring or collar k on the end of an electric conductor which is clamped to the post a by screwing down the cap d. The connection can be made with one hand only. Alternatively the end of the wire to be connected may be bent round into a flat ring j, Fig. 5. The post a may have a similar terminal at its lower end. In a modification a resilient member is fitted at the top of the post a to hold the flattened head k temporarilv in position while the sleeve is screwed down. This member is in the form of a spring loaded plunger. When applied to the terminal of a sparking plug a ferrule w with a closed end is fitted over the conductor t and a screw u is inserted radially into the ferrule, connection being made by inserting the head of the screw into the slot g as shown in Fig. 9. The conductor may be fitted into a sleeve with an axial extension and a flattened head for insertion into the sleeve d, and may be held in the sleeve by a set screw.
Patent GB-828651-A (GB)
Title: Improvements in tin-plating
IPC: C25D3/32
Filed: 1957-08-15
Abstract: Phenol sulphonic acid, for use in tin electroplating baths (see Group XXXVI), is prepared by the reaction of sulphuric acid with phenol and is then modified by heating it at a temperature of about 120 DEG  C. for about 2 hours in the presence of small amounts of phenol and sulphuric acid.  The heating may be carried out in the presence of a low boiling solvent which continually boils off, carrying water-vapour with it.  In an example, phenol p  is melted and an equal weight of 20% oleum is slowly added to it. The mixture is then maintained at 93 DEG  C. for 3/4 hour, and afterwards allowed to cool.  The solid product contains phenol sulphonic acid (89%), phenol (2%), sulphuric acid (about 2%), water (about 7%), and a trace of dihyroxy diphenyl sulphone.  This product is modified by heating under reflux at 120 DEG  C. for 2 hours. The modified product is cooled and diluted to 65% with water for use in a tin-electroplating bath.
Patent GB-839417-A (GB)
Title: A process for the production of benzthiazole-2-dicycloalkyl-sulphenamides
Inventor: LOBER FRIEDRICH
Filed: 1958-08-12
Abstract: Benzthiazole - 2 - dicycloalkyl sulphenamides are prepared by reacting an N-dicycloalkyl amine, in which the cycloalkyl radicals may be substituted or unsubstituted and contain 5 to 7 ring carbon atoms, with an aqueous alkali metal hypochlorite solution to form the corresponding N - chloro - dicycloalkyl amine, and reacting this latter compound in the aqueous phase in the presence of a watersoluble aliphatic ketone (e.g. acetone, methyl ethyl ketone, methyl propyl ketone or diacetone alcohol) with an alkali metal or alkaline earth metal salt of 2-mercaptobenzthiazole.  The second stage of the reaction may be carried out in presence of 0.05 to 0.25 mol. of an alkali metal hydroxide or alkaline earth metal hydroxide per mol. of mercaptobenzthiazole.  Specifications 377,730, 713,496, 737,252 and 753,803 are referred to.
Patent GB-322738-A (GB)
Title: Improvements in and relating to female urinals and bedpans
IPC: A61G9/00
Filed: 1928-09-10
Abstract: 322,738. Rees, F. G. Sept. 10, 1928. Bed-pans comprise a shallow vessel of dish-like formation having a hollow handle or extension 13 closed at 14 and of substantial internal capacity in relation to that of the vessel. A hood 11 and rubber rim covering 12 may be provided as described in Specification 298,366, and also supporting rollers 16.
Patent GB-1136588-A (GB)
Title: Etching process
IPC: C22C21/08
Filed: 1966-06-10
Abstract: 1,136,588. Etching. NORTH AMERICAN ALUMINUM CORP. 10 June, 1966 [25 June, 1965], No. 25995/66; Heading B6J. Aluminium alloy is etched in a bath comprising an alkali such as sodium or potassium hydroxide, 50-105 grams per litre dissolved aluminium, sulphide ions provided by addition of alkali sulphides or polysulphides such as sodium sulphide, or hydrogen sulphide, and optional additives such as sodium gluconate.
Patent GB-1060698-A (GB)
Title: Improvements in electrical converters
IPC: H01L25/03
Filed: 1964-06-24
Abstract: 1,060,698. Semi-conductor rectifier assemblies. ALLMANNA SVENSKA ELEKTRISKA A.B. June 24, 1964 [June 25, 1963], No. 26070/64. Heading H1K. All the ends of one polarity of a plurality of semi-conductor rectifier stacks (each stack having a middle terminal for A.C. connection) are disposed in electrical and thermal contact with a metallic part of a common casing which acts as a first D.C. collection bar, a second D.C. collection bar being formed by a member in electrical contact with the other ends of the stacks; the outside of the casing is in contact with a cooling medium. The assembly is primarily intended for mounting on a rotatable part of a machine, and in one embodiment, Fig. 1, the rectifier stacks 4 are arranged radially within a metal casing 3, the second D.C. collection bar being formed by a central metal body 6 having a projecting central peg and a conical outer surface which is urged against corresponding conical surfaces on stack contact members 5 by means of an assembly of cup springs 8. Each stack has a terminal 1 for A.C. connection. Alternatively, Fig. 3, the central D.C. collection bar may take the form of a resilient axiallyslotted member 21, the. assembly being fitted into a tubular machine shaft 19 which carries cooling flanges 20 or fan blades. In another construction, Fig. 4, the stacks extend in an axial direction from an end face of a shaft 24 and the casing 26 carries cooling fins 27:
Patent GB-1214267-A (GB)
Title: Improvements in or relating to aircraft gangways
IPC: B64F1/305
Filed: 1969-05-22
Abstract: 1,214,267. Aircraft gangways. AVIOLANDA MAATSCHAPPIJ VOOR VLIEGTUIGBOUW N.V. 22 May, 1969 [29 May, 1968], No. 26216/69. Heading B7J. An aircraft gangway 1 comprises an end section 2 forwardly engageable with an aircraft fuselage and having side elements 9, 10 pivotable independently of each other about an axis 8 substantially coinciding with the forward lower edge 7 of the section 2, and a roof section 13 supported by and movable with side elements 9, 10 and comprising a rearward extending member 14 slidably connectedwith side elements 9, 10 and a forward rocking member 15 attached by a pivot 20 to the rearward member 14 and having its forward upper edge 22 flexibly connected to side elements 9, 10. The connection between the forward upper edge 22 and side elements 9, 10 is a ball joint 23 comprising a ball (24) movable translationally and rotationally in a cylindrical sleeve (26) to allow rocking movement of member 15. Slidable movement of member 14 is by means of a plurality of rollers 16 in channel shaped side walls 17 which rollers 16 have circumferential grooves 19 engageable by strips 18 in the side walls 17. In use, side elements 9, 10 are pivoted towards a doorway in an aircraft fuselage by hydraulic jacks 12 taking along the rocking member 15, through the ball joints 23, into engagement with the aircraft fuselage, and also the member 14. Sealing members are provided on the forward edges of side elements 9, 10 for wind-tight connection with the fuselage.
Patent GB-963894-A (GB)
Title: Improvements in electrical control apparatus
IPC: G05D23/22
Filed: 1960-07-28
Abstract: 963, 894. Automatic temperature control. MINNEAPOLIS-HONEYWELL REGULATOR CO. July 28, 1960 [July 28, 1959], No. 26351/60. Heading G3R. A workpiece 6 is heated by a furnace element 4 energized from an alternating current supply 5 through a magnetic amplifier 1. A signal from a thermocouple 7, representative of the temperature of the element 4, is fed to the wiring coil 11 of a photo-electric controller 9, wherein a vane 13 interrupts the light-beam between a lamp 15 and a photo-cell 14 at a preset temperature. The photocell is connected through an inverter amplifier to a control winding 23 of a magnetic amplifier 22 so that the control winding current has a fixed value below the preset value and is reduced when the temperature is above the preset value. A thermocouple 8 senses the temperature of the workpiece and is connected through a photo-electric controller 10 and amplifier 21 to a control winding 24 so that the control winding current is constant below a preset temperature and increases above the preset temperature. The output current from the magnetic amplifier 22 is dependent on the sum of control winding currents and through a rectifier 26 controls a winding 2 on the magnetic amplifier 1 so as to bring the temperature of the workpiece up to a desired value without overshoot and thereafter maintain this temperature constant. The positions of the arms 16, 116 determines the preset temperatures of heating element 4 and workpiece 6 respectively.