baber/WOPTO huggingface dataset:
Patent GB-977483-A (GB)
Inventor: MULLER GEORGES
IPC: C07J75/00
Filed: 1962-06-15
Abstract: The invention comprises A-nor-B-homo- 10#x-19-nor-3, 6, 20-trione having the formula <FORM:0977483/C1/1> the enolic forms thereof, A-nor-B-homo-19-nor-pregn-5(10)-3, 6, 20-trione and processes for the preparation thereof in which 19-nor-pregn-5(10)-ene-3(20)-dione is reacted with ozone in an inert solvent medium to form 19-nor-5(10)-seco-pregna-3, 5, 10, 20-tetrone which is then treated with an acid cyclization agent to form A-nor-B-homo-19-nor-pregn-5(10)-ene-3, 6, 20-trione which compound is then reacted with a mixed metal hydride to yield A-nor-B-homo-10#x-19-nor-pregna-3, 6, 20-trione. Cyclization may be effected with formic acid. The 19-non-pregn-5(10)-en-3, 20-dione may be obtained by the oxidation of <FORM:0977483/C1/2> (where R represents an alkyl group having 1-6 carbon atoms to form the corresponding 3-alkoxy-19-nor-pregna-2, 5(10)-dien-20-one which is then reacted with an acid agent to form 19-nor-pregn-5(10)-ene-3, 20-dione. Oxidation may be effected with aluminium isopropylate in the presence of methyl ethyl ketone.  Pharmaceutical compositions having progestomimetic activity and containing compounds having the first of the above formulae are administered orally in tablets, glossets, pills, syrups or elixirs, by injection, or rectally as a suppository.
Patent GB-480606-A (GB)
Title: Improvements in or relating to display devices
IPC: B65D73/00
Filed: 1936-08-24
Abstract: 480,606. Display stands. SHIRLEY, F. J. Aug. 24, 1936, No. 23253. [Class 3 (ii)] A display stand comprising a panel with one or more apertures for receiving goods to be displayed is characterized in that the panel comprises two pieces of sheet material lying face to face, and the apertures are each shaped to provide one or more pairs of lugs serving to support the goods therein, the two lugs of each of which pairs are formed one on the front and the other on the rear piece. In the embodiment shown, the stand formed by folding a blank, Fig. 2, about a line 14, comprises a panel with apertures 22, 23, 24, 25 provided with pairs of lugs a formed by folding portions 46 of the parts 16, 18 of the panel in opposite directions. The apertures may be arranged in horizontal, vertical or slanting rows or in staggered relation to one another. The lower portion of the panel may constitute a folding box-body arranged to support the stand.
Patent GB-710835-A (GB)
Title: Improved circuit for the automatic control of vehicle headlamps
Inventor: BORDEWIECK ROBERT WILLIAM
IPC: B60Q1/14
Filed: 1952-09-17
Abstract: 710,835. Photo-electric cells. MOORE ELECTRONIC LABORATORIES. Inc. Sept. 17, 1952, No. 23368/52. Drawings to Specification. Class 39(1) [Also in Groups XL(b) and XL(c)] A photo-electric cell having a large load resistor (of the order of 100 megohms) in its cathode circuit has an earthed conducting strip surrounding its envelope and passing between its anode and cathode terminals, to prevent leakage from the anode across the envelope appearing as a signal at the cathode.
Patent GB-1509374-A (GB)
Title: Control couplings
IPC: F16H48/30
Filed: 1974-05-28
Abstract: 1509374 Clutch combinations; differential gear GKN TRANSMISSIONS Ltd 27 May 1975 [28 May 1974] 23526/74 Headings F2C F2D and F2W A cone friction clutch 31, 32 in parallel with a multiplate viscous shear coupling 25 is engaged by an increase of pressure within the liquid in the coupling. The viscous shear coupling has interleaved plates 10, 11 in an enclosure 25 filled with liquid to an extent such that the pressure therein rises rapidly as the temperature exceeds a predetermined value (e.g. 100‹ C.). The temperature rise is caused by prolonged slip in the coupling. The plates 10, 11 which may be perforated, are splined at 22, 23 to relatively rotatable cylinders 13, 14. The clutch cones 31, 32 are integral with plates 27, 33 respectively splined to the cylinders 13, 14. The plate 27 is urged away from the plate 33 by a spring ring 42 and is acted upon the the liquid pressure within the coupling 25. When the pressure in the coupling 25 increases beyond a predetermined value the plate 27 moves left against the bias of the spring 42 to engage its conical surface 31 with the coned surface of the plate 33. The viscous liquid may have a viscosity between 5000 and 100,000 centistokes and preferably between 30,000, 60,000 centistokes at 25‹ C. and zero shear rate. The coupling is filled to the desired extent by completely filling the coupling and then heating to the predetermined temperature to expel a quantity of liquid from the coupling prior to replacing a filling plug 18. One or both sets of plates 10, 11 of the coupling may be axially movable and one of the sets of plates may be lined with friction material. Differential gear.-An interaxle differential gear (131) Fig. 3 (not shown) of a four wheel drive vehicle comprises an input shaft (52) fast with a planet carrier (49) carrying planet pinions which mesh with a ring gear (50) and a sun gear (51) respectively connected directly to a first output shaft (132) and through a sleeve (57) and chain-and-sprocket gear (56) to a second output shaft (135). The sleeve (57) and ring gear (50) are interconnected by a viscous shear coupling and parallel friction clutch of the type described above to limit relative rotation between the output shafts (132, 135).
Patent GB-155907-A (GB)
Title: Improvements in cloth expanders
IPC: D06C3/06
Filed: 1919-09-25
Abstract: 155,907. Mycock, W. Sept. 25, 1919. Registering webs.-A cloth expander for drying, calendering, and other finishing machines consists of two or more curved bars mounted in adjustable bearings so that all the bars may be moved simultaneously in parallel planes, adjacent bars moving in opposite directions. Four bars A, Fig. 1, are secured by their ends a to bearing brackets B, which are mounted in a frame C and are provided with racks D, Fig. 2, interconnected by rack-wheels d<1> and rotatable by a worm and wheel d so that the brackets B are simultaneously adjustable, two in one direction and the other two in the opposite direction, at right-angles to the plane of the axes of the bars A. The racks D may be flat or may consist of rings or of square threads formed on the brackets B; or rack bushes D', Fig. 6, may be pinned to the spindles of the bearing brackets. Each bracket B is formed with a slot or notch to receive the end a of a bar A. A threaded ring b', Fig. 1, a cottar, or a screw plug may be provided to secure the bar to its bracket. One or more of the rack-wheels may be connected by a shaft F to a wheel at the other side of the expander for simultaneous operation of both ends of the bars A.
Patent GB-1161880-A (GB)
Title: The Purification of Vinyl Acetate.
IPC: C07C69/01
Filed: 1967-05-23
Abstract: 1,161,880. Vinyl acetate. CELANESE CORP. 23 May, 1967 [25 May, 1966], No. 23779/67. Heading C2C. Vinyl acetate, contaminated with 1-4C aldehydes, is purified by mixing for 5 to 60 seconds with an aqueous solution of sodium bisulphite providing 1 to 2À5 moles of bisulphite per mole of aldehyde present, the pH being maintained at 4À2 to 6À5, and then separating the aqueous solution from the vinyl acetate. Buffering agents such as sodium bicarbonate, sodium sulphite, sodium carbonate, sodium hydroxide and mixtures thereof may be used. Vinyl acetate contaminated with aldehyde may be that prepared from ethylene, oxygen and acetic acid using a noble metal catalyst with a cupric salt. A flow-diagram illustrates the use of in-line high-speed blenders for the mixing zones.
Patent GB-585490-A (GB)
Title: Improved apparatus for dehydrating fish and other food products
IPC: A23B4/03
Filed: 1944-11-30
Abstract: 585,490. Drying-apparatus. DAVID, V. M. Nov. 30, 1944, No. 23890. Convention date, March 21. [Class 34 (ii)] [Also in Group VI] Apparatus for dehydrating fish and other food products comprises a horizontally disposed tubular vessel 1 which is closed by end doors 2 and provided with internal side manifolds 9, 10, having a steam or hot water inlet 22 and outlet 23 respectively, and is adapted to receive one or more wheeled trucks 25 with shelves 16. The shelves 16 are hollow and communicate with vertical headers 17, 18 which are located at opposite sides of the truck and are arranged to be coupled at 20 to the manifolds 9, 10 so that heating steam &c. may be circulated through said shelves; alternatively the shelves house electric heating coils, the manifolds and headers 9, 10, 17, 18 &c. being replaced' by suitable conductors. Removal of vapours from the apparatus is effected through conduits 8 leading to a vacuum pump, and condensation of these vapours above the trucks is prevented by heating means 7 embedded in insulation 6 within a shield 5 extending longitudinally along the top of the vessel 1. A drain cock 26 may be provided at the bottom of the vessel:
Patent GB-247248-A (GB)
Title: Improvements in and relating to induction electricity meters
IPC: G01R11/36
Filed: 1924-10-09
Abstract: 247,248. Ferranti, S. Z. de. Oct. 9, 1924. Electric and magnetic.-The permanent brake magnets acting on the conducting disc of an electric supply meter are hinged to the main frame of the meter so as to enable them to be swung clear of the disc to permit removal of the meter mechanism. In another construction, shown in Fig. 18, the braking system comprises two U-shaped permanent magnets 48 disposed vertically outside the cylindrical surface of a bell-shaped rotor 44. the magnetic circuit being completed by soft iron pieces within the bell. This construction permits removal of the rotor from above without disturbing the magnets.
Patent GB-388325-A (GB)
Title: Improvements in or relating to air chambers of pumps
IPC: F04B11/00
Filed: 1932-08-29
Abstract: 388,325. Reciprocating pumps. KNORR-BREMSE AKT.-GES., 9, Neue Bahnhofstrasse, Lichtenberg, Berlin. Aug. 29, 1932, No. 24085. Convention date, Oct. 24, 1931. [Class 102 (i).] In the air vessel of a liquid pump a freely floating hollow body b covers and projects above the water surface, and may be provided with annular baffles f<2> and vertical guide ribs d. A conical rubber attachment h forms a valve between the vessel and the feed pipe p when the vessel is being filled with air through a check valve g. Specifications 3788/04, [Class 102, Pumps &c.], and 377,192 are referred to.
Patent GB-1074044-A (GB)
Title: Improvements in or relating to pulse-operated image intensifiers
IPC: H01J31/50
Filed: 1964-06-10
Abstract: 1,074,044. Image converter tubes. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 10, 1964 [June 10, 1963], No. 24090/64. Heading H1D. In an image converter tube adapted for intensifying images of short duration by application of positive pulses to a control electrode 8, Fig. 2, and comprising a photo-cathode 4 of high resistivity carried by an insulating support, an electrically conductive element not directly connected to the cathode is provided on the opposite surface of this support to minimise voltage fluctuations in the photo-cathode due to the effects of current circulating therein, and capacitance between the photo-cathode and control electrode, and thereby prevent distortion of the electrostatic focusing field. In particular, the photo-cathode may be deposited on a part of the tube envelope of glass, 2À5 mm. thick, a a copper or brass wire mesh, coextensive with the cathode, being provided on the outer surface of the envelope. Alternatively the conductive element may comprise a conductive liquid (52), Fig. 9 (not shown), in a transparent chamber (54) shaped to compensate for the curvature of a photo-cathode (60). on tube base (56).
Patent GB-1421840-A (GB)
Title: Valving means for controlling fluid through a passageway
IPC: B25D9/12
Filed: 1973-06-29
Abstract: 1421840 Percussive tools IMPULSE PRODUCTS CORP 29 June 1973 [10 Aug 1972] 24111/75 Divided out of 1421839 Heading B4C [Also in Division F2] The subject-matter of this Specification is identical with that described in Specification 1,421,839, but the claims are concerned with a valving means for controlling fluid flow through a passageway, such as between a charging chamber (72) and a triggering chamber (36) Figs. 1 to 3 and 7 to 9 (not shown), comprising a valving element having a piston (18) on one end and a probe (38) on the other, the piston and probe having sealing surfaces which cooperate with portions (28, 40) of the passageway to control the fluid flow therethrough, and a poppet valve (48) which slidably engages the probe and is closed at one end.
Patent GB-248657-A (GB)
Title: Improvements in and relating to signalling devices for bicycles and motorcycles
IPC: B62J6/00
Filed: 1925-09-28
Abstract: 248,657. Rasenheim, C., and Bello, E. Sept. 28, 1925. Road-traffic signals on vehicles; bell signals.- A signal for bicycles and motor-cycles comprises a triangular framework e, c, i and a lever g bearing a disc m. Pressure of the thumb on a button l on the member e causes the lever g to be extended. A spring k returns the device to its non- extended position. A bell p may be struck by a clapper o on the disc simultaneously with or independently of the showing of the signal.
Patent GB-153438-A (GB)
Title: Improvements in and relating to wire mattresses
IPC: A47C23/145
Filed: 1919-10-03
Abstract: 153,438. Crossley, H. J. Oct. 3, 1919. Mattresses.-A flat core for the cable edge of a mattress comprises two separate bundles of wire twisted to form the open spiral bundles 4, 5, and connected together by a flexible wire cord 6 passed through one or more of the adjacent spirals, the desired coils a being lifted to allow the cord 6 to pass. The spiral bundle 4, 5 may be drawn together by weaving one or more additional wires through them, so forming a core of substantially triangular section.
Patent GB-679967-A (GB)
Title: Label and like holders
IPC: G09F3/18
Filed: 1949-09-22
Abstract: 679,967. Signs. FELTON, C. T. Sept. 20, 1950 [Sept. 22, 1949], No. 24326/49. Class 3(ii) [Also in Group XV] A sign holder 3, Fig. 3, comprises a U - shaped length of split metal tubing forming channel - shaped side limbs. A sign 1 and transparent covers 2 preferably with raised parts 9 .are slid into the holder and one held in position by a cross-member 4 which has heads 5 which frictionally engage the inside of the split tube. A modified form of cross-member 6, Fig. 7, has hooks to clip externally on the side members. The extensions of the side limbs may be inserted into the ground and spiked pieces may be fitted into or on to them for strengthening purposes.
Patent GB-861685-A (GB)
Title: Improvements relating to roof or wall supporting devices for use in coal-mining and like operations
Inventor: ANDREWS MURRAY ALBERT GEORGE
IPC: E21D21/00
Filed: 1958-07-29
Abstract: 861,685. Anchor-bolts &c. BAYLISS, JONES & BAYLISS Ltd. July 29, 1959 [July 29, 1958], No. 24330/58. Addition to 825,003. Class 89(1). An anchor-bolt for mine-roofs &c. and intended to be removable for re-use, comprises a tube 10, Fig. 1, having hinged thereto at one end expandable-shells 15, and secured thereto at the other end, a bearing-plate 20, a rod 11 movable - axially within the tube to engage wedge-surfaces 19 on the shells and move them apart to engage the walls of a bore-hole. To remove the bolt, a chain &c. fixed to the end 23 of rod 11 is pulled until a cross-pin 25 on the rod abuts the plate 20. The shells can now pivot towards each other as the bolt is drawn from the hole. In a modification, rod 11, Fig. 4, has screw-threads 27 engaging, a nut 29 fixed to plate 28, and extends through a spacing-sleeve 30 to engage, and be fixed to, a nut 31 on a handle 32 for turning rod 11 to expand or permit contraction of the shells,
Patent GB-409697-A (GB)
Title: Improvements in or relating to synchronous motors particularly adapted for use with time indicating mechanism
IPC: G04C15/00
Filed: 1932-08-31
Abstract: 409,697. Electric clocks. ELTIME CLOCK CO., Champlain Street, Toledo, Ohio, U.S.A.-(Assignees of Hogenbirk, N.; c/o Bates & Co., 549, West Randolph Street, Chicago, U.S.A.) Aug. 31, 1932, No. 24334. Convention date, Dec. 8, 1931. [Class 139.] A non-self-starting synchronous motor for clocks &c. comprises a toothed stator and unwound toothed rotor separated by a radial air gap, some of the boundary lines of the pole faces of the rotor or stator or both making an angle of less than 90‹ with a plane perpendicular to the rotor axis; the pole faces may be stepped, in which case the boundary line must be understood as the line passing through the corners of the steps. Fig. 4 shows such a motor with a rotor 40 formed of laminations slightly offset from each other so as to produce stepped teeth as described above, the sides of the slots between the teeth being substantially parallel. The stator 32 also consists of laminations, some of which are toothed to form the poles, while the others do not extend as far as the pole faces so that the width of the rotor is greater than that of the stator. Such a motor is supported on the clock frame by a plate 21, Fig. 2, secured to the frame by bolts 20 and resilient buffers 23, 24, and a bracket 27 of sheet metal with reinforcing ribs. The motor drives the spindle 70, Fig. 3, of the clock through worms 50, 60 and 67 and worm wheels, the last 69 of which is loosely mounted on the spindle 70 and connected with it by a friction drive consisting of a spring 72 and disc 73. The spindle of the worm 60 is mounted on pieces 57, 58 struck up from the bracket 27 and the piece 58 has a slot 59 to facilitate the insertion of the spindle.
Patent GB-321988-A (GB)
Title: Improvements in or relating to endless track vehicles
IPC: B62D55/04
Filed: 1928-08-24
Abstract: 321,988. Vickers-Armstrongs, Ltd., and Carden, J. V. Aug. 24, 1928. Endless-track vehicles.- An endless-track vehicle of the kind having a pair of rear driving tracks and a pair of front steering tracks is provided with a pair of supporting wheels e or m for each track which are journaled at the opposite ends of a laminated spring member g, or a pair of laminated spring members, carried by the framework of the vehicle. In the construction shown the springs are secured to blocks k rocking on axles l, and the wheels e, m are journaled in blocks f secured to the ends of the springs, screw or other means i being provided for adjustment of the blocks along the springs. The driving track a passes over the wheels e and a. driving sprocket c.
Patent GB-302397-A (GB)
Title: Improvements in or relating to insulation material for electric apparatus
IPC: H01B3/50
Filed: 1927-09-17
Abstract: 302,397. Symons, H. D. Sept. 17, 1927. Insulation.-A material for insulating electric apparatus, such as armature coils or magnet coils, consists of a tape having secured to one face an insulating tape, so that the one overlaps the other on one or both edges. Both tapes may be of cotton or linen impregnated with insulating varnish or compound, but they may be of different materials. Other material than fabric may be used; one of the tapes may be of rubber, for example. In one form of the invention, a cotton tape is impregnated with insulating varnish and a narrower tape, of the smoothly-varnished cambric known as " empire cloth," is applied so as to leave a margain at each edge. The impregnating varnish secures the one tape to the other as it dries.
Patent GB-385023-A (GB)
Title: Improvements in automatic electric switch arrangement for initiating or terminating operations in sound reproducing apparatus
Filed: 1931-09-01
Abstract: 385,023. Gramophones. DANDRIDGE, G. F. J., Biddenden, Falmouth. Avenue, Highams Park, London. Sept. 1, 1931, No. 24545. [Class 40 (ii).] An automatic switch arrangement for stopping- a gramophone, breaking the pick-up circuit, or initiating record changing, at the end of playing- of a record comprises a pivoted lever adapted to travel adjacent to the pick-up and normally supported by an arm on a rock shaft carrying a member engaging the record grooves at the outer side of the reproducing needle whereby,. when the needle at the end of playing comes to rest or is given an inward acceleration, the shaft is rocked to release the pivoted lever, which then falls by gravity or under spring action and completes an electric circuit by a mercury or ball switch on the lever. The switch is reset by the return movement of the pick-up arm. As shown, lever i carrying a mercury bulb switch l with contacts l<1>, l<2> is mounted by a pivot i<1> in a casing f carried on an arm g, which can turn on a horizontal pivot near the pivot of the pick-up arm and is engaged by a slotted plate h secured to the pick-up arm a. The lever i during playing of a record is supported by an arm i of a boss j<1> fixed to a spindle k carrying a leather, fibre or equivalent disc or star m engaging the record. When the reproducing needle e<1> enters the concentric or spiral terminal groove, the change in relative traverse of the needle and disc causes a part rotation in one direction or the other, of the disc by the record groove whereby the arm j is rocked clear of the lever i, which then falls by gravity or spring action and thus permits the mercury in the switch to connect the contacts and complete a circuit for effecting a record change. Alternatively the falling of the lever may break a circuit to arrest the driving motor of the turntable or disconnect the pick-up leads. On return of the pick-up after playing a record, a roll p on the arm g rides on a fixed incline o<1> and the lever i is thereby raised through a lever r pivoted to the plate h, thus permitting a spring k<1> bearing on a flat on the boss j<1> to bring the arm j into supporting position. The roll p then moves down the incline o<1> into starting position on the next record. Specification 337,512, [Class 40 (ii), Phonographs &c.], is referred to.
Patent GB-388766-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03G1/00
Filed: 1931-09-01
Abstract: 388,766. Valve amplifying circuits. ASSOCIATED TELEPHONE & TELEGRAPH CO., 1033, West Van Buren Street, Chicago, U.S.A. Sept. 1, 1931, No. 24568. Convention date, Sept. 5, 1930. [Class 40 (v).] The input volume to a thermionic amplifier is controlled while presenting a constant impedance to the incoming circuit by means of a transformer having a three-limbed core. The flux through the secondary 11 is controlled by a variable resistance 9 which by short-circuiting winding 7 deflects flux from the limb 3 to the limb 6 and therefore from the secondary 11 to reduce volume. In a modification, Fig. 2 (not shown), the primary winding is wound on the centre limb and the volume adjusting windings on the outer limbs one of which also carries the secondary winding.
Patent GB-502094-A (GB)
Title: Improvements in and relating to taps and valves
IPC: F16K31/18
Filed: 1937-09-10
Abstract: 502,094. Pinch cocks. COOPER, C. Sept. 10, 1937, No. 24658. [Class 135] A ball tap has a flexible tube A with one or more passageways through it, the tube being fitted to an inlet nozzle or nozzles B<3> of equal cross-sectional area to the passageway or passageways respectively and being pressed to cut off the flow as the ball lever N<1> rises by a sliding member D engaged by the ball lever. As shown in Fig. 1, the flexible tube A is held against a nozzle B<3> in the fitting B by a surrounding metal sleeve B4 and a screwed-in outlet nozzle c. The bore or bores in the tube A may be of oval shape. The sliding nember D is engaged by a cam or nose N on the ball lever N<1> which is pivoted at N<2> between brackets N<3>. An aperture for the member D is formed in the sleeve B<4>. In a modification, the sleeve B<4> is dispensed with and the tube has a conical enlargement at its inlet engaged by a conical spigot on the supply pipe. The member D is somewhat enlarged and slides in a lateral extension of the fitting'B. The member D has a recess for engagement by the nose on the float lever. An extension nozzle may be screwed to the outlet of the fitting.