baber/WOPTO huggingface dataset:
Patent GB-763204-A (GB)
Title: Improvements in or relating to polyhydrophenanthrene compounds
IPC: C07D317/72
Filed: 1953-08-21
Abstract: The invention comprises hydrophenanthrene derivatives of the formula <FORM:0763204/IV(b)/1> <FORM:0763204/IV(b)/2> (wherein R represents a hydroxyl or keto group, M represents an unsaturated aliphatic hydrocarbon radical, and which contain in position 7 in I either a divalent radical or a pair of univalent radicals which yield a keto group on acid hydrolysis, and in II a single univalent radical convertible to keto on acid hydrolysis), the corresponding 7-keto compounds of the formula <FORM:0763204/IV(b)/3> and a process for their preparation which comprises reacting a 2 : 4b-dimethyl-4-R-7-di-substituted - 1 : 2 : 3 : 4 : 4a : 4b : 5 : 6 : 7 : 8 : 10 : 10a - dodecahydrophenanthrene - 1 - one or the corresponding 7 - monosubstituted - 1 : 2 : 3 : 4 : 4a : 4b : 5 : 6 : 10 : 10a - decahydrophenanthrene derivative with an unsaturated aliphatic hydrocarbon halide (MX) in the presence of an alkali metal or a metal alkoxide to yield I or II respectively, which on acid hydrolysis give the dione III. Specified groups which may occupy the 7-position are ethylenedioxy, ethylenedithioketal, ethylene hemithioketal, dimethyl ketal and ethyl enol ether.  In examples: (1) 2 : 4b-dimethyl - 2 - methallyl - 7 - ethylenedioxy - 1,2,3,4,4a,4b,5,6,7,8,10,10a - dodecahydrophenanthrene-1 : 4-dione is prepared by treating a benzene solution of the corresponding 2 : 4b-dimethyl - 7 - ethylenedioxy - dione with methallyl iodide, and then potassium in t.-butyl alcohol.  Two isomeric forms are obtained, separable by chromatography. Hydrolysis of the 7-ethylenedioxy group by refluxing with p-toluene sulphonic acid in acetone yields 2 : 4b-dimethyl - 2 - methallyl - 1,2,3,4,4a,4b,5,6,7,9, 10,10a - dodecahydrophenanthrene - 1 : 4 : 7 - trione.  The corresponding 2 - methallyl - 7 ethylenedioxy - 4 - ol - 1 - one, 2 - allyl - 7 - ethylenedioxy - 1 : 4 - dione and 4 - ol - 1 - one, and 2 - propargyl - 7 - ethylenedioxy - 1 : 4 - dione and 4-ol-1-one are similarly prepared, and then hydrolysed to the 7-keto derivatives. Specifications 763,203, 763,206 and 763,208 are referred to.
Patent GB-995562-A (GB)
Title: Improvements in materials distributing machines
Inventor: ELLIS STANLEY PETER JOHN
IPC: E01C19/18
Filed: 1962-06-15
Abstract: 995,562. Laying down road material. JOHN LAING RESEARCH & DEVELOPMENT Ltd. May 10, 1963 [June 15, 1962], No. 23136/62. Heading EIG. [Also in Division A1] A machine for distributing granular material comprises a conveyer 2a which feeds material from a hopper 5 and a flat plate 9 which lies under the upper rim of the conveyer and is shaped so that material is pushed over the edge of the plate by the conveyer. The conveyer is made up of bars of triangular section. Adjustable gates 8 control the amount of material leaving the hopper and a blade 17 controls the depth of material laid. As shown the machine is formed as a self-propelled mobile chassis 1 and the hopper is filled by means of a tipping lorry. In a modification the conveyer may be mounted on wheels which run on rails. The return rim of the conveyer may be agitated to remove loose material adhering thereto.
Patent GB-196304-A (GB)
Title: Improvements in electric motor and like controllers
IPC: B60L15/20
Filed: 1922-06-30
Abstract: 196,304. Gordon, C. J. June 30, 1922. Controllers.-A motor controller for use on electrically-propelled vehicles having subdivided batteries consists of a stationary disc 1 bearing line contacts and a rotatable disc 2 bearing a bridgepiece 13 of bifurcated shape. In successive positions of the bridge-piecs A, B, C, the motor is connected successively to the divided batteries in series, in parallel, and in parallel with additional resistance. In position. D the motor is connected for rheostats braking. The operating spindle 15 may run through a hollow steering pillar to a handle movable over a setting rack.
Patent GB-277024-A (GB)
Title: Electro-mechanical resonance device for distant control
IPC: H01H51/32
Filed: 1927-09-03
Abstract: 277,024. Compagnie pour la Fabrication des Compteurs et MatÚriel d'Usines a Gaz, and Soc. dite l'Action Ó Distance. Sept. 3, 1926, [Convention date]. Alternating-current relays. - A tuned eletromagnetic device adapted for distant control operable in response to two different frequencies of current has a polarizing-magnet 1 (Figs. 1 and 2) with pole pieces 2, 3 carrying parallel connected windings 4, 5 tuned by series condensers 7, 8. Reeds 9,10 are arranged adjacent to the corresponding pole-pieces so that one of the reeds' is arranged to operate mechanism shown in Fig. 3 which consists of a shaft 20 carrying a satellite wheel 19 meshed with differential wheels 17, 18 connected to corresponding toothed wheels 15, 16 acted upon by pawls 13, 14 carried by the reeds 9, 10. Thus if one or other of the reeds is set in vibration the corresponding differential wheel is stepped round causing a rotation of the shaft 20 in one or other direction. The shaft 20 is connected by gearing 21 - - 24 to a shaft 25 which may carry a rocking mercury switch and when this has been moved sufficiently to produce a switching operation further stepping round movement of the pawl is prevented by its being engaged by one of the sides 28, 29 of a stop member 27 secured to the shaft 25, Fig. 4. Alternatively this member could be arranged to engage the corresponding vibrating strip 9, 10 at the completion of the switching mevement. By substituting a lever for the mercury switch the mechanism may be arranged to control the clutch lever of a double tariff electric meter.
Patent GB-1140295-A (GB)
Title: Improvements in fuel cell systems
Inventor: HILMER RICHARD MICHAEL
IPC: H01M8/04
Filed: 1967-05-18
Abstract: 1,140,295. Fuel cells. ALLIS-CHALMERS MFG. CO. 18 May, 1967 [23 May, 1966], No. 23191/67. Heading H1B. In a fuel cell system having a capillary matrix 18 defining on one side, with the housing 17 and electrode 12, a reactant cavity 20 and on the other side, with the housing 17, a product removal cavity 25 through which is circulated a transport liquid which is an aqueous solution of a non-volatile solute and which serves to remove water and heat produced in the fuel cell, via an aqueous solution of lower vapour pressure impregnating the capillary matrix, the face 23 of the matrix facing the electrode has thereon a discontinuous, gaspermeable, water impermeable coating of a water-repellant material to reduce flooding. The matrix may be of asbestos or fibrous polypropylene or an ion exchange membrane with a coating of polythene, polypropylene, polystyrene, silicone, wax, or, preferably, P.T.F.E. or polychlorotrifluoroethylene, applied from an emulsion or colloidal dispersion of solid particles. As shown the transport liquid is pumped through conditioner 32 where excess water is removed and through cooler 36 before returning to the cell.
Patent GB-308142-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/10
Filed: 1928-08-11
Abstract: 308,142. Knupfer, B. Aug. 11, 1928. Casings. - The conduit leading to an oblique valve seat is of elliptical cross-section so that a circular seating opening may be obtained. A circular union a may merge into the elliptical part c with or without change of crosssectional area. The change of shape may be effected by depressing the upper wall a<1> so that the bottom part a<2> remains straight or the axes of the circular elliptical parts may be in alignment.
Patent GB-1359381-A (GB)
Title: Electrostatic record developing apparatus
IPC: G03G15/09
Filed: 1972-05-18
Abstract: 1359381 Magnetic brush developing apparatus HITACHI METALS Ltd 18 May 1972 [21 May 1971 11 Aug 1971 21 Feb 1972 (3)] 23371/72 Heading G2H Electrostatic latent images on a drum 22 are developed by powder toner applied by a magnetic brush on the outer surface of rotary sleeve 1, which is of non-magnetic material and surrounds a cylindrical core 5 made up of magnets and polepieces so arranged that an odd number of polepieces in strip form lie parallel to the axis of the core and present alternate poles to the core surface around all but one part of its circumference. There, adjacent poles of the same polarity assist removal of residual developer by scraper 18.
Patent GB-321925-A (GB)
Title: Improvements in life saving apparatus for submarines
IPC: B63G8/41
Filed: 1928-08-14
Abstract: 321,925. Williams, W. E. Aug. 14, 1928. Buoyant lifesaving chambers and the like.-A lifesaving chamber detachably carried by a submarine has detachable depending guide links engaging guides in the surrounding casing, whereby the chamber is guided substantially until it has emerged from the enclosure. An enclosure a<1> is formed in the submarine to house the escape chamber B to which access is obtained through a door K; the enlarged upper end of the chamber engages a packing a<3> to make a water-tight joint. In the enclosure are rings D fixed to stanchions C and supporting a rotatable cage comprising spaced rings E, E<1> connected by vertical H-bars F and diametrically opposed guides G ; toothed gearing P, e<1> may be provided for adjusting the cage. Slidable within the guides G are guide links H the upper ends of which are detachably secured to the chamber B by screw-studs J controlled by nuts j<1>; the links H are freed before ejection of the chamber B is completed. Oxygen tubes S, water, food, flags, telescopic masts, rockets, compass, &c. are provided in the chamber B. A valve pipe O permits the enclosure to be flooded when the chamber B is to be released; such release is effected in the form shown in Figs. 1 and 2 by means of a tubular nut r<5> engaging a pivoted screw R. A gauge rod Q, working within a perforated tube q<3>, indicates the position of the chamber. In a modified arrangement, Fig. 4, one or more hydraulic rams T eject the chamber until spring detents t<11> engage the lower end of the plunger; auxiliary rams T' may be provided to complete the ejection of the chamber. In this arrangement, a pawl h<1>, Fig. 4<A>, on each guide link H engages teeth g' in the guides G to prevent return movement of the chamber, while a pawl h<2> engages a tooth g<4> to limit movement of the guide link H. In a further form, Fig. 5, a compressed spring S is provided for ejection of the chamber B; the spring is held compressed by threaded engagement of two tubes S', S<1>, and is released when desired by operating a centre wheel S<8> which, through pinions S<7>, causes screws S<6> to be freed simultaneously. The chamber B may be provided with screw propellers.
Patent GB-1002211-A (GB)
Title: Method of preparing sustained release pharmaceutical tablets
IPC: A61K9/22
Filed: 1963-06-12
Abstract: Sustained-release tablets are prepared by dissolving a medicament in a solvent to form a solution, mixing the solution with a water-insoluble lattice-forming material which is insoluble in the solvent, removing said solvent to obtain a substantially dry mixture and compressing said mixture into tablets which thereby have the medicament uniformly dispersed in the lattice structure formed by the water-insoluble material.  The lattice-forming material may be aluminium oxide, a water-insoluble metal salt of a fatty acid containing from 6-22 C. atoms e.g. calcium stearate, bentonite, silica gel, barium sulphate, or mixtures thereof.  The solvent may be water, a C1-6 alcohol or a mixture thereof.  Water-soluble forms of a wide range of drugs may be used e.g. antibiotics, steroids and vitamins. Optional ingredients are (a) inert, water-soluble carriers e.g. urea, glycine, glycol, polyvinyl pyrrolidone, polyvinyl alcohol or mixtures thereof; (b) water-resistant agents e.g. methyl cellulose, fatty acids, fatty alcohols, fatty esters, fatty oils and wax, which slow down the release of the drug; (c) surface-active agents e.g. sodium lauryl sulphate, polysorbates and bis-2-ethylhexyl sodium sulpho-succinate; (d) anti-acid or intestinal fluid solubilising agents e.g. cellulose acetate phthalate, starch acetate phthalate, polyvinyl acetate phthalate or mixtures thereof.  The optional ingredients and drug are put into solution and mixed uniformly with the water-insoluble particles.  Alternatively, the particles may be sprayed with the said solution of drug and modifiers.  In a modification, a non-reactive water-soluble carrier is dissolved in a solvent, the solution is mixed with the water-insoluble lattice-forming material, the solvent is removed, an enzyme is mixed with the dry mixture and the resultant product is compressed into tablets.
Patent GB-1471493-A (GB)
Title: Battery grid casting machines
IPC: B22D29/04
Filed: 1974-05-28
Abstract: 1471493 Battery grid casting machines WIRTZ MFG CO Inc 28 May 1974 [4 Jan 1974] 23490/74 Heading B3F In a battery grid casting machine having a stationary mould member 62, a movable mould member 60 and a reciprocating mechanism connected to the member 60 and movable to open and close the mould, the stationary mould member 62 is provided with ejector pins 110 actuated by means connected to the reciprocating mechanism. The mould is opened and closed by means of a pneumatic cylinder 24 whose piston rod is connected to a slide 26 movable along a pair of bars 18, the slide being connected to the mould member 60 by a pair of bars 54. The slide 26 is provided with brackets 34 whose upper ends support a cam-plate 66 having a cam surface 68 provided with a high point 70. The surface 68 is engaged by a roller 84 journalled at the end of a lever 82 which is free to swing about its pivot axis 80 in a clockwise direction but whose movement in a counter-clockwise direction is limited by a plate 86. The lever 82 is connected to a lever 78 which is fixed to a rod 72 mounted in bearings 74 supported on the framework 14 of the machine. Also fixed on the rod 72 are two pairs of arms 88 whose other ends are connected to links 90 which in turn are connected to a slide 94 guided for movement toward and away from the rear face of the mould back 10 by a pair of pins 100 received within bushings 102. The arrangement is such that when the slide 26 is moved to the right by the pneumatic cylinder 24 to open the mould, the roller 84 is engaged by the cam surface 68 after the slide 26 has travelled a distance of between one half and three quarters of the mould opening stroke and this results in the links 90 and the slide 94 also moving to the right so that adjustable screws 104 on the slide 94 abut pins 108 and cause the ejector pins 110 to be projected forwardly and thereby eject the grid from the mould before the movable mould half reaches the fully open position. The ejector pins 110 are biased to a retracted position by coil springs 114 and are able to return to this position as soon as the roller 84 has passed the high point 70 of the cam surface 68.
Patent GB-533519-A (GB)
Title: Device for cutting rifling grooves in gun barrels
IPC: B23D5/02
Filed: 1939-08-15
Abstract: 533,519. Rifling. SCHWEIZERISCHE INDUSTRIE-GES. Aug. 15, 1939, No. 23518. Convention date, Aug. 15, 1938. [Class 83 (iii)] Rifling-bars.-In a method of producing in gunbarrels rifling grooves having a non-uniform pitch, a number of grooves are cut simultaneously by a corresponding number of tools operating in both directions of movement. When a large number of grooves are to be cut the tools are arranged on the piston 1 on two rings I, II, separated by a distance L. The cutters of each ring are fed simultaneously outwards by means of a wedge operated by a feed rod. The rings are relatively rotatable for setting purposes. The ring I is connected to a rod 6 carrying a pinion 7 and the ring II to a rod 4 carrying a pinion 5. The pinions engage racks which are also spaced by the distance L and are controlled by templet strips 11, 12 engaged by pairs of rollers 9, 10 and 15, 16 respectively. Thus as the slide 2 is operated to draw the piston through the barrel the rings are independently rotated in accordance with the templet. The clamping members 13 may be adjusted in their slots 17 to alter the templet to cut different riflings. In some cases a single templet strip having roll-ways on both sides may be used. The positions of the clamps 13 may be tabulated so that any particular setting may be quickly reproduced. The templet may also be arranged in a straight line to cut rifling of constant pitch or it may be arranged to cut a partly progressive and partly constant rifling. When cutting grooves of constant pitch the rings have no relative rotation and they may be secured together. In another modification, more than two rings of cutters may be used.
Patent GB-831082-A (GB)
Title: Improvements in process for recovering monomers from hot latex emulsions
IPC: C08C1/04
Filed: 1956-07-31
Abstract: In order to inhibit foam-formation when monomeric material, such as butadiene and styrene, is recovered from a hot latex of a synthetic rubber-like polymer by flash vaporization and/or steam-stripping, an aqueous dispersion of zinc stearate is added to the hot latex prior to or during either or both steps. Preferably between 20 and 150 ppm. of zinc stearate, based on the quantity of latex, is added.  The aqueous zinc stearate dispersion may be made by adding a slight excess of a solution of sodium stearate to a solution of zinc chloride.  Another method is to mix solid zinc stearate with the sodium salts of the sulphate monoesters of lauryl and myristyl alcohols, and then disperse the mixture in water containing a small proportion of isopropyl alcohol.  A typical hot latex is prepared by heating a mixture of butadiene and styrene in an aqueous emulsion containing sodium fatty acid soap, and small quantities of potassium persulphate (as catalyst) and dodecyl mercaptan (as modifier).  The reaction is continued for about 15 hours at a temperature range of 124-127 DEG  F. and a pressure range of 15 to 75 p.s.i.g.; and then hydroquinone is added to stop further polymerization. Approximately 77% of the monomers are converted into the synthetic polymer.  The hot latex passes to a flash tank at 5 p.s.i.g., where the bulk of the unreacted butadiene is vaporized, and then into a vacuum flash tank. If desired, a portion of the aqueous zinc sulphate dispersion is added during the first flash step. The flashed latex is then introduced into the upper portion of a column fitted with perforated trays.  Steam is introduced into the base of the column, which is operated under reduced pressure, whereby the unreacted styrene is stripped out of the latex.  The remainder of the aqueous dispersion of zinc stearate is added during the stripping step.
Patent GB-370792-A (GB)
Title: Improvements in fuses, more particularly for artillery and aircraft projectiles
IPC: F42C1/02
Filed: 1931-08-21
Abstract: 370,792. Projectile fuzes. RMONDY, L. E., 42, Rue d'Anjou, Paris. Aug. 21, 1931, No. 23599. Convention date, Nov. 26, 1930.' [Class 9 (i).] Relates to sensitive combined direct and momentum-action fuzes of the kind described in Specifications 172,326 and 238,186, [both in Class 9 (i), Ammunition &c.], in which both the striker c and the percussion cap f are contained in a movable casing b which is inwardly guided by projections h<1> on a washer h that prevents initial forward movement of the cap. According to the present invention, in order to prevent inward movement of the casing and cap on the projectile leaving the gun, a retaining or safety device is provided in the form of a cup e which is fastened by shear wires or the like g to the fuze body a and is located either below the base b<2> of the casing, as shown, or between the cap and the base of the casing. The washer h is retained by a screwed part a<1> of the fuze body the removal of which allows of the withdrawal of the whole of the fuze casing.
Patent GB-236026-A (GB)
Abstract: 236,026. Western Electric Co., Ltd., (Western Electric Co., Inc.). June 11, 1924. India-rubber, preserving.-Rubber is impregnated with paraffin wax for sufficient time to enable the pores at or near the outer surface to be filled without substantially affecting the mechanical properties or dimensions. The rubber is first heated for several hours at 200‹ F. to drive off moisture, and is then subjected to the action of melted paraffin wax for a relatively shorter period, for example 15 minutes.
Patent GB-955072-A (GB)
Title: Improvements in or relating to liquid pumping systems
IPC: F15B15/18
Filed: 1959-07-09
Abstract: 955,072. Reciprocating pumps. RICHARD SUTCLIFFE Ltd., and L. BAINES. July 11, 1960 [July 9, 1959], No. 23639/59. Addition to 948,332. Heading F1A. In a pumping system according to the parent Specification the main pump has at least one other outlet for supplying other apparatus.
Patent GB-846633-A (GB)
Title: Improvements in or relating to wide-band amplifiers
Inventor: SOSIN BOLESLAW MARIAN
IPC: H03F1/20
Filed: 1958-07-23
Abstract: 846,633. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. May 12, 1959 [July 23, 1958], No. 23688/58. Class 40(6). In a distributed amplifier comprising a grid line L1 and anode line, the portion L2 of the anode line remote from the output end 2 is of uniform impedance whereas the portion L3-6 adjacent the output end is tapered. The anode line may comprise different parts of a single winding the pitch of which is varied in discrete steps over the tapered portion of the line. Two such amplifiers may be used in push-pull (Fig. 2 not shown) the input and output being by means of centre-tapped transformers. The amplifier may employ pairs of triodes in cascode connection instead of screen-grid valves.
Patent GB-308195-A (GB)
Title: Improvements in gas fired water heaters
IPC: F24H1/00
Filed: 1928-08-17
Abstract: 308,195. Geake, W. H. G., Kerr, I. W., and Roach, H. March 19, 1928, [Convention date]. Block-form boilers; annular boilers; composite boilers.-A small continuously-burning gas burner 9 delivers into a water-jacketed induction pipe 10 leading to a flue 8 coiled in zig-zag form in a water cistern 7. The induction pipe may be lagged, and provided with a draw-off tap 19. Feed water may be supplied through a narrow bore coiled tube 20 in the induction pipe and flue. The main draw-off pipe 22 may be flexible with its open end supported by a float 23. The Specification as open to inspection under Sect. 91 (3)_ (a) comprises also the use of a non- jacketed induction pipe 10, Fig. 2 (Cancelled) narrowed to cause a comparative slowing of the gases through the larger diameter tube of the flue 8. This subject-matter does not appear in the Specification as accepted.
Patent GB-468318-A (GB)
Title: An improved spring piston ring for reciprocating pistons
IPC: F16J9/14
Filed: 1936-08-31
Abstract: 468,318. Piston-rings. SINAPIUS, W. Aug. 31, 1936, No. 23773. [Class 122 (i)] In a piston-ring comprising two or more convolutions 23, connected by bridge pieces 21 the convolutions are spaced apart, whereby the ring has a tendency to collapse at the ends of the stroke and forces oil from the gaps 22 on to the cylinder wall. Spaced projections 26, 27 may be provided between the convolutions which may be of varying width as shown.