baber/WOPTO huggingface dataset:
Patent GB-837049-A (GB)
Title: Improvements in or relating to the preparation of steroid compounds
Inventor: HOLT THOMAS ERIC
IPC: C07J75/00
Filed: 1957-11-14
Abstract: The acid hydrolysis of semi-carbazone linkages in steroids is carried out in a homogeneous medium consisting essentially of aqueous tetrahydrofuran, the resulting keto-steroid being recovered by causing the medium to separate into two phases, separating off the organic phase and recovering the keto-steroid therefrom.  The hydrolysing agent is preferably a strong mineral acid, such as hydrochloric, sulphuric or phosphoric acid, and the separation of the medium into two phases is advantageously effected by the addition of a water-soluble salt, such as ammonium sulphate, the quantity of ammonium sulphate preferably being from 25 to 50% by weight of the amount of water present in the reaction medium.  The ketosteroid may be recovered from the organic phase by distilling off the tetrahydrofuran, and the residual aqueous phase may be further extracted with tetrahydrofuran and further keto-steroid recovered from this extract.  The process of the invention is stated to be particularly applicable to the hydrolysis of a 20-keto-pregnane or -allopregnane, particularly a 17-hydroxy - 20 - keto - pregnane - or - allopregnane, when sulphuric acid is the preferred hydrolysing agent.  In examples the 3 : 20-bis-semi-carbazones of 4 : 5a -dihydrocortisol, hydrocortisone, cortisone acetate and prednisolone are hydrolysed to the corresponding diketones and 4 : 5a -dihydrocortisol is converted to the 21-acetate.  Hydrolysis of the bis-semi-carbazone of 4 : 5b -dihydrocortisol and of the 21-acylates of all the abovementioned compounds is also referred to.  Reference is also made to the conversion of 4 : 5a -dihydrocortisone 21-acetate to the corresponding 3 : 20-bis-semi-carbazone, reduction of the 11-keto group to an 11b -hydroxy group and hydrolysis of the semi-carbazone linkages to form 4 : 5a -dihydrocortisol and to the corresponding conversion of cortisone 21-acetate to cortisol.
Patent GB-1074766-A (GB)
Title: Polishes, coating waxes or carbon paper waxes
IPC: C09G1/08
Filed: 1965-08-19
Abstract: A polish, coating wax or carbon paper wax contains as hard wax (i) the residue from an Alfol-alcohol synthesis having an m-value exceeding 25; or (ii) the residue from such a synthesis having an m-value 20-25 in admixture with a polyolefin; or (iii) an ether containing at least 30 C, or an ester containing a C4-C10 dicarboxylic acid or a mono carboxylic acid of at least C14, derived from a normal alcohol separated from the residue of such a synthesis having an m-value less than 10, in admixture with a polyolefin; or (iv) an ester of an acid obtained by oxidation of such a normal alcohol with another alcohol, in admixture with a polyolefine.  The polyolefine may be polyethylene, -propylene, or -butylene, of M.W. 2000-10,000. The "m-value" is the number of mols. of ethylene bound per g. equivalent Al-C in the Alfol-alcohol synthesis ("Alfol" is a Registered Trade Mark).  Other constituents of a polish are a volatile solvent such as white spirit, a microwax, and a hard paraffin. In examples polyethylene constitutes 20% or 33.3% by weight of the hard wax component.
Patent GB-357199-A (GB)
Abstract: 357,199. Ignition systems and switches. HARLICK, W. A., 27, Avenue Road, Gosport, Hampshire. May 16, 1930, No. 15116. [Class 7 (iv).] - A manually-operated selector switch enables any one of a plurality of supply circuits to be employed for ignition, one at least of such circuits, after selection, being automatically closed by the revolution of the engine. As shown in Fig. 1, if the switch p engages contact b, the generator f will, as soon as the engine is turned, energize the solenoid j. This closes contacts p<1> in the battery-coil circuit g, h. When the switch is on contact c, ignition current is supplied directly by the generator, and when turned to engage the contacts b, d, the battery-coil circuit will function alone. The coil of the solenoid is mounted within insulation l, and the projecting end of the core n carries the two-armed switch member o. The arms p engage screw-heads which serve to retain a flexible diaphragm r carrying the contact t. Closure of the members t, n may be effected by engine suction exerted through the pipe v. The members t, n may be separated to stop the engine by a rod running axially through the knob o and core n. The contact member t may be in the form of a spiral spring annulus.
Patent GB-1281032-A (GB)
Title: Smokers' lighters
IPC: F23Q2/173
Filed: 1969-07-16
Abstract: 1281032 Gas fuelled lighters HEINRICH MALTNER GmbH 16 July 1969 [17 July 1968] 35757/69 Heading F4F In a gas fuelled lighter comprising a porous fuel throttling pad 30, a porous fuel evaporating pad 26, and a burner 18, the throttling pad 30 is insulated from the lighter-flame but the evaporating pad is not. The evaporating pad 26 may be of heat conducting material and is in thermal communication with the lighter-flame via a metallic insert 24 carried by a metallic flame adjusting member 14. The throttling pad 30 is housed in a plastics housing 11 secured to the member 14, and is separated from the insert 24 and the evaporating pad 26 by a sealing ring 36 and an insulating pad 39.
Patent GB-1415830-A (GB)
Title: Gripper shuttles for looms
IPC: D03J5/06
Filed: 1974-08-15
Abstract: 1415830 Gripper shuttles SULZER BROS LTD 15 Aug 1974 [23 Oct 1973] 36003/74 Heading D1E A gripper shuttle has a hollow body 1 and gripping jaws 2, 2' which form extensions of a tip 8 which is spigotted into the shuttle body and secured therein by a pin 7. The body 1 may be of plastics material, glass reinforced plastics material, steel, aluminium alloy or sintered material. The tip 8 bears against the body 1 on inclined surfaces 9, which may be curved and the holes 5 in the body 1 and tip 8 may be offset, as shown in Figure 7, to ensure a tight fit of the tip on the body or may be tightly secured thereon by resilient rings and/or grommets 22, 23, Figure 8. The tip may be of lesser thickness than the body to ensure easy passage through the reed guide teeth and for warp clearance and the body may have an internal flange 15.
Patent GB-763424-A (GB)
Title: Improvements in or relating to toy fire engines
IPC: A63H17/00
Filed: 1954-12-14
Abstract: 763,424. Toy fire engines. ERHARD, K., and JACOBOWITZ, M., [trading as TIPP & CO.]. Dec. 14, 1954 [Dec. 16, 1953], No. 36193/54. Class 132(3). The extending ladder of a power driven toy fire engine is actuated by means of a metal strip which is unwound from a pulley. As shown, the free end of a steel strip 16 is attached at 16<SP>1</SP> to an upper ladder 18 which slides on a lower ladder portion 10, and the remainder of the strip is wound on a pulley 15 rotatable by means of a crown wheel 12 secured on a shaft 13 which is non-rotatably mounted in a superstructure member 1, the crown wheel engaging a pinion 14 secured to the pulley 15. A bar 7 is pivotally connected to the vehicle body by means of a disc 8 and to one of two side members 9 of the lower ladder. The ladder is extended when either of two projections 4 provided on a main driving gear 3 engages a pin 5 projecting downwardly from the rotatable superstructure member 1 which is normally urged to the position shown in Fig. 1 by a helical spring 28. When the member 1 is rotated to the position shown in Fig. 8, the lower ladder 10 is raised by means of the bar 7 and the pinion 14 caused to roll around the crown wheel 12. The strip 16 is thus unwound from the pulley 15 causing the upper ladder 18 to be extended. The vehicle is automatically steered by means of a cam on the driving gear 3 actuating a bell-crank lever connected to the front axle assembly.
Patent GB-1505575-A (GB)
Title: Nuclear reactor
IPC: G21C5/10
Filed: 1975-09-03
Abstract: 1505575 Reactors WESTINGHOUSE ELECTRIC CORP 3 Sept 1975 [4 Sept 1974] 36205/75 Heading G6C In a reactor, e.g. a liquid metal-cooled, fastbreeder reactor, the core components, including fuel-rod assemblies 121, are supported by a plurality of separate coolant inlet modular units 221. The modular units 221 are supported, each removable independently of the others, in liners 203 in the supporting structure 191 (Fig. 6, not shown) for the lower internals of the reactor. The fuel-rod assemblies 121 are removably supported in integral receptacles or sockets 231, 233 of the modular units 221. The liners 203, modular units 221, and sockets 231, 233 have inlet openings 217, 283 and 237, respectively, for entry of the coolant. The modular units 221 are each removably mounted in the liners 203 with fluid seals 287, 289 interposed between the openings 217, 283 in the liner 203 and inlet modular unit 221 into which the coolant enters and the upper and lower portion of the liner 203. Each assembly 121 is similarly mounted in a corresponding socket 231, 233 with fluid seals 239, 261 interposed above and below the openings 237. Because of the above-described seals interposed in the mountings of the modular units 221 and the fuel-rod assemblies 121 the pressures above and below the modular units and the fuel-rod assemblies are balanced and the modular units are held in the liners and the fuel-rod assemblies are held in the sockets by their weights as they have a higher specific gravity than the coolant. The low-pressure spaces between each modular unit and its liner and between each fuel-rod assembly and its modular unit are vented to the low-pressure regions of the reactor vessel to assure that coolant which leaks through the seals does not accumulate and destroy the hydraulic balance.
Patent GB-1346201-A (GB)
Title: Table lamps
IPC: F21V11/04
Filed: 1971-08-02
Abstract: 1346201 Table lamp CARRARA & MATTA SpA 2 Aug 1971 [16 Oct 1970] 36298/71 Heading F4R A table lamp has a number of part-cylindrical side screens 10, whose internal surfaces are, at least partially, diffusively reflective, mounted for pivoting on a cylindrical base 1 to form a cylindrical lampshade which is open at the top and which has, between adjacent side screens, lateral openings of width adjustable by varying the angular position of the side screens, which side screens are so shaped and positioned that no direct light is emitted laterally through the openings, only diffused light. A stub shaft 14 projecting from the shaped lower flange 13 of each curved side screen 10 engages regularly spaced holes 4 surrounding the coaxial lampholder 5 in the base 1. The side screens 10, which may have a slit 15 formed therein, may be formed of coloured translucent plastics or opalescent material and may be linked by gearing to permit simultaneous adjustment thereof. The lamp is easily dismantled to facilitate transport and packing.
Patent GB-631249-A (GB)
Title: Improvements relating to apparatus for comparing the timing of trains of pulses
IPC: G01S1/20
Filed: 1946-12-10
Abstract: 631,249. Phase difference measurements. COOPER, A. H. Dec. 10, 1946, No. 36405. [Class 37] [Also in Group XL (c)] In a direction finding system for determining the phase difference between trains of signals of equal frequency received from master and slave transmitters, sinusoidal oscillations generated at the receiver are made to bear a predetermined phase relation to the two trains and the phase difference of these sinusoidal oscillations is indicated on a phase meter. As shown, two trains of pulses 4 and 3 are fed to a receiver 1 which is capable of discriminating between them, the two sets of pulses then being fed into different channels as shown. Oscilla,- tors 6 and 8 oscillate at the pulse repetition frequency and are locked in by these pulses. It is assumed that the time delay in both circuits is the same and the phase difference of the sinusoidal oscillations indicated on the meter 9 is then the same as the phase difference of the pulse trains. Oscillators 10 and 11 produce a 10th harmonic frequency indicating the first decimal point of the phase difference on the meter 12 and oscillators 13 and 14 a 100th harmonic to give the second decimal place on meter 15. Strobing devices 5 and 7 may be provided, comprising amplifiers which are switched off between the periods of pulse reception so that interference may not give rise to false pulses to affect the locking of the oscillators. Switch 16 is provided for calibration purposes. By locking both oscillators to the train of pulses 3 zeroing of the meters is achieved. The phase meters may be calibrated in terms of distance.
Patent GB-448880-A (GB)
Title: Mechanism for controlling matrix-setting and type line casting machines
IPC: B41B27/10
Filed: 1934-12-19
Abstract: 448,880. Type-bar-making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A.-(Assignees of Larson, E. S.; 6233, Magnolia Avenue, Chicago, U.S.A.) Dec. 19, 1934, No. 36408. Convention date, Jan. 8. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 1, 1935.] [Class 100 (iii)] Driving - mechanism; escapements.-The means for delaying the action of certain signals in a controlling recordstrip, which is described in Specification 449,088, is applied to the shifting of a set of escapement reeds, in order to effect a change of magazine. The levers 84, 85, one or the other of which is selected for operation by the delayed signal, act through two sliding bars 88, 92 and a T-shaped lever 95 to shift a link 99, which rocks a set of movable escapement reeds into engagement with the escapements of either magazine. To the lever 95 are pivoted two three-armed levers 105, 109, which are connected together by a spring 107, and carry set-screws 119, 121, which engage the arm 97 of the lever 95. The levers 105, 109 are adapted to be engaged by spring-pressed locking-pawls 114, 117, in order to hold the lever 95 and the link 99 in either of their extreme positions, and, in the arrangement of the parts shown, the lever 105 is engaged by its locking-pawl 114. When the next shift-signal operates, the upper lever 85 shifts the sliding bar 92 and causes the lever 109 to be engaged by its locking-pawl 117, the spring 107 being stretched. The locking-pawl 114 is then caused to release the lever 105, whereupon the spring 107 causes the shifting of the lever 95 and the link 99. Specification 415,798 also is referred to.
Patent GB-1162411-A (GB)
Title: Improvements in and relating to Bearings
IPC: F16C35/10
Filed: 1966-08-16
Abstract: 1,162,411. Bearings. LANDIS TOOL CO. 16 Aug., 1966 [16 Aug., 1965], No. 36565/66. Heading F2A. A journal bearing assembly comprises an internally cylindrical bearing member 11, a journal 10, rigid peripherally-spaced bearing pads 40-42, and means for adjusting the bearing member radially to establish a uniform clearance between each pad and the journal, the circumferential dimension of each pad being such that, when oil is passed through the grooves 45, the oil film forming over each pad is discharged into an adjacent groove and quenched before its temperature has reached boiling point. The adjusting means may comprise annular wedges enclosing the bearing member, which contains a circumferential split.
Patent GB-333838-A (GB)
Title: Improvements relating to means for packing pistons
IPC: F16J9/10
Filed: 1929-11-28
Abstract: 333,838. Wrench, J. M. D. Nov. 28, 1929. Piston packing.-In a split or segmental packing-ring 3 for a piston or piston-valve, in which expansion is limited by undivided rings 6, 6a in grooves in the sides of the packing, the restraining-ring 6 at the high-pressure side is provided with tongues 8, which cover the splits in the ring 3. The ring 6<a> may also be provided with tongues. The ring 3 may be of cast-iron and the rings 6, 6<a> of steel, brass tongues 8 being brazed to the latter. One end of the ring 3 may be provided with a tongue 10 entering a recess in the other end of the ring.
Patent GB-420773-A (GB)
Title: Improvements in or relating to means for regulating the active surface of a radiator for internal combustion engines
IPC: F01P7/12
Filed: 1933-12-29
Abstract: 420,773. Radiators for motor vehicles. YACCO S. A. F., 42, Avenue de la Grande- ArmÚe, Paris. Dec. 29, 1933, No. 36586. Convention date, Jan. 10. Addition to 392,825, [Group XXXVI]. [Class 29] The electric motor e for actuating the shutter c of the radiator under the control of a thermal element k and switch u, as described in the parent Specification, is provided with means for stopping it automatically as the shutter approaches the limit of its travel in either direction. The means may comprise contacts v<1>, v<2> adapted to be engaged by a lug v<3> on a nut v<4> on the shutter actuating shaft s.
Patent GB-430994-A (GB)
Title: Variable-speed gearing
IPC: F16D67/00
Filed: 1933-12-30
Abstract: 430,994. Hydro-mechanical variablespeed gearing. ROBERTS, R. E., 1, Browning Drive, Londonderry, Northern Ireland. Dec. 30, 1933, No. 36688. [Class 80 (ii)] Hydro-mechanical variable-speed gearing comprises a driven shaft E with fast upon it the driving-member I of an hydraulic coupling and the carrier N of planet gears B which mesh with a sun-gear A fast on a driving-shaft K. An annulus C meshing with the gears B is connected through a sleeve G and intermeshing dogs H to the driven member F of the coupling. At low speeds, the hydraulic coupling is inoperative, the annulus C is prevented from turning backwards by a one-way brake D and the toothed gearing operates to drive the shaft E at a definite minimum speed ratio. As the whole device speeds up, the coupling becomes operative and the annulus C begins to rotate forwardly, the relative speed of the shaft E increasing. At higher speeds, the coupling becomes increasingly operative until substantially a solid or 1 to 1 drive is attained. According to the Provisional Specification, the coupling may be partially emptied of oil through circumferentially-arranged valves which are closed by centrifugal means, after which oil pumped from the driving-shaft accumulates in the coupling to develop torque.
Patent GB-522645-A (GB)
Title: Improvements in or relating to the coagulation of cuprammonium cellulose solutions
IPC: D01F2/04
Filed: 1938-12-16
Abstract: 522,645. Artificial silk, films, &c. I. G. FARBENINDUSTRIE AKT.-GES. Dec. 16, 1938, No. 36740. Convention date, Dec. 18, 1937. [Class 2 (ii)] Water which has been used for precipitating cuprammonium cellulose solution in the stretchspinning process for producing artificial fibres, bands, films and like shaped articles, is subjected to an intensive filtration, for instance, by means of a sand or kieselguhr filter, and, without removing dissolved copper or ammonia therefrom, is then used for precipitating further quantities of cuprammonium cellulose solution. A proportion of fresh water may be added after each filtration. In view of the reduced precipitative action of the filtered water, precipitation with its aid may be carried out at raised temperature, or water which has been used to precipitate fibres of low total titre, may, after filtration, be used to precipitate fibres of high total titre. Specification 310,864, [Class 2 (ii)], is referred to.
Patent GB-879842-A (GB)
Title: A device for machining inner screw-threads in the two openings of a hollow cylindrical member
IPC: B23G5/06
Filed: 1959-10-29
Abstract: 879,842. Taps. CAMPAGNOLO, T. Oct. 29, 1959 [Oct. 31, 1958], No. 36808/59. Class 83 (3). A device for tapping two aligned holes simultaneously in the opposite ends of a hollow member such as the crank-bracket of a bicycle, comprises a hollow tap 1 secured to a member 3 by a key 5 and a nut 7, and a second hollow tap 2 secured in the same manner to a coaxial shaft 8, rotatable and axially slidable in the member 3. The taps are rotated by inserting a bar in the apertures 11, and the keys may be replaced by splines or teeth.
Patent GB-448276-A (GB)
Title: Improvements in or relating to the production of magnesia refractories
IPC: C04B35/03
Filed: 1934-12-22
Abstract: The strength of magnesia refractories is improved by adding to granular magnesia refractory material at least 5 per cent of forsterite, which provides a crystalline bond at temperatures as high as 1600 DEG  C.  The magnesia may be derived from a suitable ore, e.g. magnesite or brucite, or may be electrically fused magnesia. The bonding agent may be pure forsterite, or a rock containing a high percentage of magnesium orthosilicate, e.g. olivine, dunite, peridotite or chrysolite.  To utilize as bonding agents magnesium silicate rocks containing little orthosilicate, e.g. serpentine and talc, their magnesia content is raised by heating with magnesia to about 2600 DEG  F.  This reaction may be facilitated by the addition of catalysts such as fluorspar or boric acid, and such catalysts may also be added to the refractory batches.  With the magnesia may also be used small amounts of other materials, e.g. chrome ore.  Before firing, the refractories may be temporarily bonded by sulphite cellulose liquor.  The forsterite bonding agent may be added to magnesia mixes which already contain clay as a bond.  Reference has been directed by the Comptroller to Specifications 193,576, 218,720, and 260,298, [all in Class 22].
Patent GB-369755-A (GB)
Abstract: 369,755. Cylinders ; valves. FUSCALDO, O., 10, Rue de Florence, Paris. March 31, 1931, No. 9749. Convention date, March 31, 1930. [Classes 7 (ii) and 7 (vi).] In a two-stroke cylinder having an overhead scavenging valve 16 and terminal exhaust ports 5, a torus-shaped chamber 14 and hollow conical surfaces 12<1>, 12<11> on the valve are arranged so that the scavenging stream sweeps over the whole cylindrical space during the opening of the valve.
Patent GB-809230-A (GB)
Title: Improvements in or relating to life rafts
IPC: B63C9/04
Filed: 1957-11-27
Abstract: 809,230. Life rafts. BELIN, M. A. Nov. 27, 1957 [Nov. 30, 1956; Oct. 16, 1957], No. 36980/57. Class 113. A life raft comprises a ring-shaped frame 1 carrying buoyant elements 2 made of a watertight cellular plastic material housed together with the frame in an imputrescible envelope 3, a floor 4 covering the centre of the raft and equispaced from the upper and lower faces of the raft, and a hood 9 on hoops 7 hinged on the frame at 8 so as to be erected on one side of the raft or the other for use no matter on what side the raft has fallen into the sea. The floor 4 comprises material 6 similar to that of the elements 2 between imputrescible cloths 5. The hood has an opening 11 and a rain-collecting bucket 12, and may be folded down to function as a wash-stroke. In the embodiment of Fig. 5 the floor 4 is made integral with the material of the buoyant elements 2, the assembly being housed in a pair of half shells 14, 15 of a polyester resin reinforced by a glass fibre fabric which overlaps so as to permit a gasket 17 being interposed before the insertion of screws 16 to connect the shells to the frame 1.
Patent GB-449328-A (GB)
Title: Improvements in or relating to welding screens, vizors, goggles or the like
IPC: A61F9/06
Filed: 1934-12-24
Abstract: 449,328. Compound glass. PATERSON, J. H., 68, Bexley Road, Erith, Kent, and MUREX WELDING PROCESSES, Ltd., Ferry Lane Works, Forest Road, Walthamstow, London. Dec. 24, 1934, No. 36985. [Class 140] [See also Group XX] A welders' eye-screen comprises a layer of coloured celluloid or other horny material faced with glass sheets, preferably cemented thereto after the manner of safety glass, the coloured layer being substantially opaque to ordinary daylight. The coloured layer may be tapered so that different areas of the screen have different opacities. In the example shown, a sheet-metal holder 1 has a handle 2 and rabbeted top and bottom frame members 3 holding the screen, which comprises a tapered celluloid layer 5 bonded between glass sheets 4. Packing 6 is provided at the narrow end. A visor 8 is held by corrugated leaf springs in frame members 7, and slides in front of the screen to allow selection of parts having the required density, extensions 9 obscuring the other portions of the screen. The visor 8 may have a plain glass front, and may be controlled by a lever on the handle 2. The celluloid layer may be dyed dark green and may be <1>/64 to <1> /32 inch in thickness.