baber/WOPTO huggingface dataset:
Patent GB-651153-A (GB)
Title: Improvements in and relating to the voltage transformation of electrical energy
IPC: H02M7/54
Filed: 1948-05-20
Abstract: 651,153. Condenser arrangements for voltage modification. KENDALL, J. T., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 20, 1948, No. 13706. [Classes 35 and 38 (iv)] In a condenser charging and discharging system for direct current voltage transformation the condenser is charged while the space between its electrodes is occupied by a dielectric material, such as barium titanate or lead zirconate, of high mean permittivity and is discharged into an output circuit after reduction of the mean permittivity of the dielectric. The reduction may be effected by replacing, wholly or in part, the high permittivity material by a material of lower permittivity. As shown in Fig. 1, the condenser comprises a plate electrode 4 reciprocated in relation to another similar electrode 3 by a motor 9 through a crank 7 and connecting-rod 5. Plate 3 carries a high permittivity disc 1 which, over part of the stroke of the connecting-rod, is engaged by plate 4 and moves therewith. The condenser is charged during this portion of the stroke over contacts 13, 14. Over another portion of the stroke, spring-loaded stops 16 prevent plate 3 from following plate 4. Contacts 13, 14 meanwhile open the charging circuit and, when the separation of the plates reaches a maximum, a contact 20 rotated by the motor connects plate 3 to a fixed contact 18 in a discharge circuit, which preferably includes a reservoir condenser. Electronic switching may replace the mechanically-operated contacts. In a modified arrangement one electrode is rotated relative to the other, which carries areas of dielectric material of different permittivity.
Patent GB-1114055-A (GB)
Title: Stators for dynamo electric machines
Inventor: HOWES MAURICE ALBERT HENRY
IPC: H02K1/16
Filed: 1966-03-29
Abstract: 1,114,055. Cores for dynamo-electric machines. JOSEPH LUCAS (INDUSTRIES) Ltd. 20 March, 1967 [29 March, 1966], No. 13807/66. Heading H2A. [Also in Division B3] A stator core is made from a plain continuous strip by simultaneously punching the slots 12 and forming troughs 16 which are deeper at the inner edge so that the strip forms a coil wound on edge. The troughs 16 serve to index the layers. An oxide coating insulates the layers.
Patent GB-1491162-A (GB)
Title: Preparation of expanded foodstuffs
IPC: A23K1/00
Filed: 1975-01-08
Abstract: 1491162 Extruder for expanded foods TROUW & CO NV and MACHINEFABRIEK LALESSE BV 8 Jan 1975 [8 Jan 1974] 13820/77 Divided out of 1491161 Heading B5A [Also in Division B1] The description is substantially identical with with that of parent Specification 1,491,161 which relates to the extrusion of a foodstuff material containing moisture, at an elevated temperature causing the foodstuff to expand upon issuing from the extruder nozzle, but the claims of the present Specification are directed to the extruder comprising a screw having a conical end 9 and located in a barrel 2 which has longitudinally extending grooves 13, Fig. 2, which have one radially extending side facing the direction of rotation of the screw and an opposite side inclined away therefrom towards the open end of the groove. The screw comprises a section a upstream of, and a conveying section b downstream of the upstream end of a hopper inlet 3 for the material, both sections being of a constant channel depth; a compression section c which is of a channel depth decreasing in the conveying direction; and a pressure conveying section d which is of constant channel depth, the sections b, c and d being of a length equal to ten times the screw diameter. The grooves 13 promote material transport by restricting material rotation with the screw, and act to cause shear which, together with shear caused in the compression section C, results in heating of the material. The compression ratio of the screw upstream of the cone 9 may be 1 to 2, with additional compression and increased extrusion speed caused by the cone 9. Preferably the zones a and b comprise at least one pitch length, and cooling is provided for the barrel, and for the screw in at least the zone C, and in the embodiment is provided for the barrel at a location 4 and for the screw by cooling liquid flowing in the directions 11, 12. The screw, which comprises a helix angle of 15 degrees in the example, is preferably rotated at less than 120 r.p.m., unless the extruder is force fed, to ensure complete filling of the barrel.
Patent GB-746043-A (GB)
Title: A process for the production of -Ï-bromostyrene or homologues thereof
IPC: C07C17/00
Filed: 1953-05-18
Abstract: o -Bromostyrene and homologues thereof are prepared by dehydrating styrene bromohydrin or homologue thereof, by treatment with a dehydrating agent.  The bromostyrene is distilled off, preferably under reduced pressure, at the rate which it is formed, together with the water.  Examples describe the preparation of bromostyrene by distilling a mixture containing styrene bromohydrin and as dehydrating agent (1) phosphorus pentoxide, (2) potassium hydrogen sulphate, (3) phosphoric acid, (4) potassium hydrogen sulphate, and (5) phosphoric acid and pumice stone, and (6) of 4-methyl-o -bromostyrene by dehydrating 4-methylstyrene bromohydrin with potassium hydrogen sulphate.  A trace of hydroquinone may be present as a stabilizer.  Other dehydrating agents specified are sulphuric acid, aluminum oxide and thorium oxide.  Specification 746,042 is referred to.
Patent GB-372946-A (GB)
Title: Improvements in joints for quartz tubes and similar quartz articles
IPC: F16L49/04
Filed: 1931-05-11
Abstract: 372,946. Quartz tubes; joints. JENAER GLASWERK SCHOTT & GEN. Otto-Schott-Strasse, Jena, Germany. May 11, 1931, No. 13858. Convention date, May 14, 1930. [Classes 99 (i) and 99 (ii).] The adjacent ends of quartz tubes a, b which are to be connected by angle-irons g and screws h with the interposition of an asbestos ring i are first formed with grooves &c. c and then provided with cast-on, flanges d of low melting-point metal such as lead upon which the angles g are adapted to bear. The flanges d may be surrounded by pressure clamps e.
Patent GB-519296-A (GB)
Title: Improvements in and connected with independent-wheel suspensions
IPC: B60G15/04
Filed: 1938-05-10
Abstract: 519,296. Spring suspensions. DAIMLERBENZ AKT.-GES. May 10, 1938, No. 13975. Convention date, May 10, 1937. [Classes 108 (ii) and 108 (iii)] An independent wheel suspension includes a shock absorber on the chassis or an element connected to the chassis, the shock absorber comprising friction discs which are rotated in opposite directions by connections to the wheel suspension. Alternatively or in addition to the friction discs two relatively slidable parts of a hydraulic shock absorber are moved in opposite directions by connections to two guide links respectively to points inside and outside the pivot points of the links relative to the wheel. In Fig. 1, the two halves of the frictional shock absorber r mounted on the pivot g of the upper link i are rotated in opposite directions respectively by the link i and the link k, the link k acting through a reversing linkage w, u. The wheel is sprung by an unguided helical spring m between the link k and an abutment n on the transverse bearer b. 'The suspension is mounted on a vertical pivot within a sleeve c in the bearer b, a forked extension y of the link k embracing rubber buffers z on the frame. In Fig. 5, an hydraulic shock absorber is combined in parallel with the frictional shock absorber. The piston-lever 21 of the former, and the' inner disc q of the latter, are coupled to the upper link i; while the cylinder housing 23 and the outer discs r, s are connected together at 24 and turned in the opposite direction by the lower link and reversing linkage u. Specification 7028/07, [Class 108], is referred to.
Patent GB-1171081-A (GB)
Title: Variable Resistor.
Inventor: GINSBERG LEON
IPC: H01C10/40
Filed: 1968-03-22
Abstract: 1,171,081. Variable resistors. PRECISION ELECTRONIC COMPONENTS Ltd. 22 March, 1968 [24 March, 1967], No. 13985/68. Heading H1S. A resistance 34 and a collector 28 located in a cover 33 are parallel to a leadscrew 19 which transports a contact 41 fixed on a housing 40 enclosing a resilient member having portions 44, 47 engaging the leadscrew 19. Arms 46 flex and disengage the member from the leadscrew 19 upon its rotation when the housing 40 abuts an end wall of the casing 14. The casing 14 is hermetically sealed, the cover 33 being fastened on a shoulder 32 by adhesive and a resilient member 37. An aperture 15 is sealed by an 0-ring 27 compressed on to a shoulder 17 by a metallic washer 28, compression being maintained by a retaining clip 29 fitting in a groove 22 in the leadscrew 19.
Patent GB-998710-A (GB)
Title: Progesterone derivative and preparation thereof
IPC: C07J7/00
Filed: 1964-04-06
Abstract: The invention comprises 17a -ethoxy-6-chloro -6-dehydro-progesterone and the preparation thereof by (1) ethylating 6-chloro-6-dehydro -17a -hydroxy-progesterone; or (2) dehydrating 17a  - ethoxy - 6 - chloro - 7 - hydroxy - progesterone; or (3) dehydrogenating 17a -ethoxy-6 -chloro-progesterone or an enol ether thereof; or (4) oxidizing 17a - ethoxy - 6 - chloro - 5 -pregnen - 3b  - ol - 20 - one: or (5) liberating the keto groups in 17a -ethoxy-6-chloro-6-dehydro-progesterone having a functionally modified keto group in the 3- and/or 20-position. Examples are given. 6 - Chloro - 6 - dehydro - 17a  - hydroxy - progesterone is prepared by dehydrogenation of 6a  - chloro - 17a  - hydroxy - progesterone, or by dehydration of 6-chloro-7,17a -dihydroxy progesterone, or by treatment of 6-dehydro-17a -hydroxy-progesterone with perbenzoic acid to give 17a -hydroxy-6a ,7a -oxido-progesterone and then boiling this with hydrochloric acid. 17a  - Ethoxy - 6b  - chloro - 7a  - hydroxy - progesterone is prepared by etherification of 6-dehydro-17a -hydroxy-progesterone, followed by addition of HOCl to the 6,7-double bond, either by epoxidation and splitting of the ring with acid or by the use of chromyl chloride. 17a -Ethoxy-6 - chloro - 5 - pregnen - 3b  - ol - 20 - one is prepared by 3-aoetylation of 17a -hydroxy-pregnenolone, 17-etherification, addition of chlorine and treatment with a base. 17a -ethoxy-6-chloro-progesterone is prepared by ethylation of the 17 - ol. 3,17a  - diethoxy - 6 - chloro - 3,5 -pregnadien-20-one is prepared by ethol-etherification of 17a  - ethoxy - 6a  - chloro - progesterone. 17a  - ethoxy - 6 - chloro - 6 - dehydro - progesterone 3,20 - bis - ethyleneketal is prepared by etherification of the 17-ol.  The compound of the invention, which is a progestational agent, may be made up into pharmaceutical compositions with suitable carriers.  These may take the form of solutions, suspensions, emulsions, tablets, pills, ointments or creams and may contain preserving, stabilizing or wetting agents, salts for varying the osmotic pressure, or buffers.  U.S.A. Specification 3,098,860 is referred to.
Patent GB-1143973-A (GB)
Title: Improvements in or relating to safety belt retractor assemblies
IPC: B60R22/353
Filed: 1966-03-30
Abstract: 1,143,973. Spring drum reels. BORGWARNER CORP. 30 March, 1966 [21 June, 1965], No. 14166/66. Heading B8B. [Also in Divisions A3, E2 and F2] A spring reel for a safety belt is mounted to rotate between side walls of a housing which supports a convex clamping beam which cooperates with a lever rotatable on a shaft mounted in the side walls, the reel being able to release clamping action on a belt passing round the lever. The clamping beam 67 and the rotatable reel 44, lever 52 and catch 62 are supported by the side walls of the housing 36. The catch 62 engages in a step in the lever 52 against the action of a spring 65 to allow withdrawal of the belt between the lever and the beam. When the belt is allowed to go slack after withdrawal, the lever pivots as the catch disengages the lever, and allows retraction of the belt, withdrawal being prevented by the lever pivoting and clamping again the belt between the lever and beam. The catch re-engages the step in the lever 52 under the pressure of the double thickness of the end of the belt when it has been fully retracted. The lever is rotated against the force of the retracting spring when the tension in the belt is small by turning a knob on the end of a shaft 53, whereby a projection on the shaft engages a projection within the lever 52 to rotate it. In modifications, the catch has an arm contacting the belt on the reel and when the belt is fully retracted causes the catch to rotate the lever. The catch may pivot on the beam instead of on the housing.
Patent GB-588105-A (GB)
Title: Improvements in or relating to oil well masts
IPC: E21B15/00
Filed: 1944-07-26
Abstract: 588,105. Struts ; connections. MOORE & CO., Inc., L. C.. July 26, 1944, No. 14271. Convention date, Feb. 24. [Class 20 (ii)] [Also in Group XXX] In oil-well masts &c. which are supported at the front by a hinge 2 on a base 3 and at the rear by the legs 6 of a gin pole which is hinged at 4 to the mast 1 and at 12 to the base 3, means are provided for locating the hinge 12 at one of several positions in order to allow for different sizes of draw-works. The hinge at 12 is shown enlarged in Fig. 4 and comprises a member built up of two scalene triangular side plates 13 united by a pair of bars 14 welded inside. At the corners of the plates are holes which receive bolts &c. 17, 19, connecting the member 13 to the leg 6 and to angle iron plates 10 fixed in the base 3. The plates 10 have a series of side openings 18 arranged in a straight or curved line so that when the member 13 is bolted thereto in certain pre-arranged configurations the lower pivot pin 17 of the legs 6 will always be on an arc of a circle centred at 4. Three configurations described are that shown in Fig. 4, and two with the member 13 laterally reversed and bolted to the plates 10 respectively in the lower two and in the upper two holes 18. Supplementary brackets 21 may be provided for bolting to the top flanges of plates 10 and to the member 13, holes 22, 24 being provided therefor suitably positioned in both parts.
Patent GB-543945-A (GB)
Title: Improvements in alternating current generators
IPC: H02K21/38
Filed: 1940-09-19
Abstract: 543,945. Inductor-alternators. UNITED STATES INSTRUMENT CORPORATION. Sept. 19, 1940, No. 14370. Convention date, Aug. 8. [Class 35] A magneto for generating signal currents for telephones comprises a magnet with two pole pieces, an armature and its winding arranged as a single unit and a number of inductor elements surrounding the armature assembly and so arranged that when the two are in relative rotation an alternating flow passes through the armature. Figs. I and 2 show a magnet 16 secured by bolts 23 between pole pieces 17, 18 attached to a block 26 adapted to be rotated by a handle 46 through the gearing shown. The armature 19 is secured between the pole-pieces 17, 18 and separated therefrom by non-magnetic spacers 20. The armature carries a winding 21. Surrounding the armature assembly is a ring 13 of non- magnetic material with magnetic insets 14. When the armature is in the position shown the flow passes through the pole piece 17, the inset 141, the armature 19 and the inset 14<SP>11</SP> to the polepiece 18 ; as the armature moves on the flow is reversed. The casing 10 of the machine also contains a telephone instrument 11 and switch devices, operated by a push-button 57, through which either the instrument or the magneto can be connected to the live wires 52, 53. A modification is described in which these switching arrangements are automatically operated by the handle and in which the armature is stationary and the ring of inductors rotates. The non- magnetic ring 13 and insets 14 may be replaced by an internally toothed ring of magnetic material. An elastic mounting for the armature 19 is described, so that it can vibrate under the magnetic attraction and increase the suddenness of the reversal of the flow.
Patent GB-527487-A (GB)
Title: Improvements in or relating to multi-piston hydraulic pumps and motors
IPC: F04B23/10
Filed: 1939-03-31
Abstract: 527,487. Hydraulic pumps and motors. ARMSTRONG, J. J. V. (Vickers, Inc.). March 31, 1939, No. 14500/40. Divided out of 527,359. Drawings to Specification. [Class 102 (1)] [Also in Group XXIX] The invention is a divided application from Specification 527.359 and is described in connection with the same machine, but the claims of the present application are different, being directed to the construction of the valve-plate for controlling the liquid flow through the pump or motor. Specification 380,578 also is referred to.
Patent GB-202084-A (GB)
Title: Improvements in or relating to collapsible meat safes, boxes, or like receptacles, and to the manufacture thereof
IPC: A47B71/00
Filed: 1922-05-24
Abstract: 202,084. Harris, A. C. May 24, 1922. Knock-down boxes. -A collapsable box or like receptacle comprises sides, front, and back which have a sliding connection with one another, and a top and 'bottom secured to the sides by cranked bolts which are riveted to the sides and pass through holes in the top and bottom. The sliding connection is formed by the curled edges b, c of the sides a, front d, and back c, which may be provided with inturned flanges s. The top and bottom plates f, g are provided at the front and rear with depending and upstanding flanges f<1>, g<1>, or the edges may be curled to conform in appearance with the vertical corners of the box. The sides a are each constructed of four elements, soldered or otherwise secured together at the corners, and the inner edges of the elements are formed as a collapsed Z whereby the perforated zinc plates n are gripped. The door frame l is similarly constructed, and rests in a recess p in the front d, the frame l being reinforced by beading o which accommodates the hinge pin q. The back e may be of plain metal, and sockets r for the pin q are provided on the frame d. A shelf (or shelves) j, formed with flanges t, rests on brackets k.
Patent GB-948488-A (GB)
Title: Roll adjusting gear for rolling mills and like applications
Inventor: ALLEN LESLIE
IPC: B21B31/24
Filed: 1960-04-26
Abstract: 948,488. Rolling. DAVY & UNITED ENGINEERING CO. Ltd. April 26, 1961 [April 26, 1960], No. 14573/60. Heading B3M. [Also in Division F2] A rolling mill is provided with a pair of roll adjustment members for moving one of a pair of work rolls, a clutch being movable to couple into a drive for the adjustment members, one or other of two gear trains, such that the movable roll is given coarse or fine adjustment. As shown in the plan view of Fig. 1, each splined shaft 9 carries a roll adjustment member which when rotated moves vertically in a captive nut to adjust the pass. A motor 13 driving by way of an input shaft 15, gearing, an output shaft 12, a worm 11, and a worm wheel 10, rotates the shaft 9 to give pass adjustment. Slidably mounted on the output shaft 12 (Fig. 4), is a splined dog clutch 28 which, when moved by a solenoid through rack - and - pinion drives, connects the drive from shaft 15 to shaft 12 either by way of bevel gears 16, 17 and teeth 25 and 29, or by bevel gears 16, 17 and 18 a worm 20, a worm wheel and coaxial pinion (not shown), a gear-wheel 24, and teeth 26 and 30. Two ratios are thus provided for the drive to the roll adjustment members. A magnetic clutch 41 connects the motors 13 and when disconnected allows independent adjustment of one end of the movable roll. Selsyns 38, 39 indicate the angular displacement of shaft 12 for fast and slow adjustment. The roll adjustment is limited by stops, and a breaker coupling 12a prevents excessive torque from being transmitted to the adjustment members.
Patent GB-1384313-A (GB)
Title: Apparatus for electronic analysis of the instantaneous location of a probe on the surface of a plate
IPC: G06V10/12
Filed: 1972-03-29
Abstract: 1384313 Acoustic position-finding SIEMENS AG 29 March 1972 [30 March 1971 25 Aug 1971(3)] 14769/72 Heading H4D The position of the tip of a probe movable over the surface of a plate of piezoelectric or magnetostrictive material is found from the transit times of mechanical waves propagated in the plate from the probe to elongated transducers arranged along adjacent edges of the plate or propagated from the transducers to the probe. In the Fig. 1, embodiment, the plate, 2, is piezoelectric and the probe 10 contacts it directly or is coupled to it capacitively. The rear surface of the plate is metallized to provide a common counter-electrode for strip electrodes 4, 6 and for probe 10. Alternatively separate counter-electrodes may be provided, on the rear or front surface of plate 2. The electrodes and probe are coupled to a pulse generator and timer 20. Spurious reflected waves from the plate edges are made ineffective by positioning electrodes 4 and 6 very close to the plate edges and by absorbing the waves in a beading 8 extending over some or all of the edges. The plate may be covered with a slightly electrically conductive layer (e.g. a paper sheet or semiconductor material), to avoid parasitic piezoelectrically created signals due to movement of the probe over irregularities of the plate surface. The probe incorporates a pencil or ball-point pen for marking a paper sheet resting on the plate. Surface or volume waves are generated in the plate. If electrodes 4 and 6 are used to generate the waves they are energized alternately. The amplitude of waves picked up by the probe or electrodes may be measured as an indication of the pressure of the probe tip against the plate. The transit time and pressure measurements are recorded and/or displayed. In the magnetostrictive embodiment (Figs. 2 and 3, not shown), the elongated transducers comprise coils on magnetically soft yokes and the probe includes a coil or a magnetically sensitive semi-conductor element.
Patent GB-1340848-A (GB)
Title: Glucose detection
IPC: C12Q1/54
Filed: 1972-05-29
Abstract: 1340848 Detection of glucose F HOFFMANN-LA ROCHE & CO AG 29 March 1972 [30 March 1971] 14776/72 Heading B1X An agent for the detection of glucose in liquids contains glucose oxidate, a phenazin and/or phenoxazin derivative and a tetrazolium salt. The specific compounds mentioned are phenoazinium methosulphate, 7-dimethylamino- 1,2-benzophenoxazinium chloride (meldola blue), or 7-dimethylamino-2'-hydroxy-1,2-benzophenoxazinium chloride; and thiazolyl blue, nitrotetrazolium blue, iodonitrotetrazolium chloride, neotetrazolium chloride, tetranitrotetrazolium blue, triphenyl tetrazolium chloride, tetrazolium violet or tetrazolium blue. The composition may be in solid or solution form or may be impregnated on to an absorbent material. It may be used for testing urine, blood, serum, plasma, or cerebro-spinal fluid.
Patent GB-561169-A (GB)
Title: A new method of and means for mounting and operating culinary, polishing, cleaning and like appliances
IPC: A47J43/08
Filed: 1942-10-22
Abstract: 561,169. Motor or power units. WARWICK, S., TYSON, E., and SARGINSON, R. H. Oct. 22, 1942, No. 14818. [Class 122 (iii)] A unit from which any one of a number of domestic machines such as mincers, wringers, churns &c. may be driven comprises an electric motor 6 geared to a shaft 4 extending towards an opening 3 in the top of a table or cabinet 2 forming the support for the machine, which may have a hollow stand 12 housing a downwardly extending shaft 15 releasably coupled to the shaft 4. The stand 12 may have a sleeve 14 depending into a housing 8 of shaft 4 and clamped in position by a clamp 21 operable from outside the cabinet. The machines to be driven may be stored in the cabinet when not in use. Reference has been directed by the Comptroller to U.S.A. Specification 1,879,004.