baber/WOPTO huggingface dataset:
Patent GB-870388-A (GB)
Title: Steroid compounds and the preparation thereof
IPC: C07J9/00
Filed: 1959-06-09
Abstract: The invention comprises a compound having the formula (including the D 1-, the D 6, and the D 16-analogues thereof):  <FORM:0870388/IV (b)/1> wherein R1 is hydrogen or methyl, R2 is hydrogen, fluorine or methyl, R3 is hydrogen or hydroxyl, R4 is hydrogen, fluorine, methyl, methylene, hydroxyl or acylated hydroxyl, the acyl group containing only carbon, hydrogen and oxygen and being derived from a mono or dicarboxylic acid containing up to ten carbon atoms, at least three of R1, R2, R3 and R4 always being hydrogen, X is hydrogen, a -halogen, a -methoxy or a -ethoxy, Y is keto or b -hydroxyl and Z is halogen in one position and hydroxyl in the other, and a process for preparing a compound having Formula I (including the D 1, D 6 and D 16 analogues thereof) which comprises reacting in a solvent the corresponding a ,b -propanoyl epoxide and a halogen acid.  The reaction may be effected at -15 to +15 DEG C.  Illustrative products of the invention are 17b -(a -hydroxy-b -chloropropanoyl) - D 14-androstadiene- 11b ,17a -diol-3-one, the corresponding bromo and iodo compounds, 17b -(a -chloro-b -hydroxypropanoyl)-D 14-androstadiene-11b , 17a -diol-3-one and also the D 4 and D 146 compounds. Specifications 870,387, 870,389 and 870,390 are referred to.ALSO:Pharmaceutical compositions comprise, in admixture with a pharmaceutically acceptable carrier, a compound of the formula <FORM:0870388/VI/1> (or a D 1-, D 6- or D 1,6-analogue thereof), wherein R1 is hydrogen or methyl, R2 is hydrogen, fluorine or methyl, R3 is hydrogen or hydroxyl, R4 is hydrogen, fluorine, methyl, methylene, hydroxyl or acylated hydroxyl, the acyl group containing only carbon, hydrogen and oxygen and being derived from a mono or dicarboxylic acid containing up to 10 carbon atoms, at least three of R1, R2, R3 and R4 always being hydrogen, X is hydrogen, a -halogen, a -methoxy or a -ethoxy, Y is keto or b -hydroxyl, and Z is halogen in one position and hydroxyl in the other.  The compositions may be in the form of tablets, aqueous suspensions, elixirs, ointments and salves.  Specifications 870,387, 870,389 and 870,390 are referred to.
Patent GB-1333345-A (GB)
Title: Immersion heater
IPC: G05D23/24
Filed: 1972-04-28
Abstract: 1333345 Automatic control of temperature K GASS ERB 28 April 1972 [28 April 1971] 19875/72 Heading G3R [ Also in Division B1] An immersion heater 2 in a mixing device (see Figs. 1-8, not shown, and Division B1) is supplied with current through a diac 17 which triggers an alternating current thyristor 19. At a predetermined temperature the circuit to diac 17 is interrupted by a contact thermometer 7 whereby the thyristor 19 blocks passage of current to the heater, should the contact thermometer 7 fail, another 7' closes at a higher predetermined temperature whereby the voltage applied to diac 17 becomes insufficient and the heating circuit is interrupted. Simultaneously a tube 22 triggers thyristor 23, so that if thyristor 19 has become permanently interconnected, a resistance 24 heats up and melts an adjacent fuse wire 25, which alsocan be arranged to melt by direct heat from the treated liquid. In a modification the induction coil 11 of the mixing device is in series with the heater 2 and the contact thermometer 7 is replaced by a thermistor, see Fig. 10, (not shown). In another Fig.11 (not shown) in which the phase cutting angle is negligible to eliminate radio interference, the thyristor 19 is always inter-connected and the contact thermometer 7' is also replaced by a thermistor the regulating resistance (33) of which is in tandem with that (29) of the heating current circuit. In yet another, (Fig. 12, (not shown) a conjunction transistor (40) is used as trigger for a thyristor (27).
Patent GB-315789-A (GB)
Title: Improvements in and relating to centrifugal compressors
IPC: F04D29/12
Filed: 1929-06-28
Abstract: 315,789. Akt.-Ges. Brown, Boveri, et Cie. July 18, 1928, [Convention date]. Stuffing-boxes, substitutes for; draining; cooling.-In a refrigerating plant in which the evaporator is below atmospheric pressure, and the refrigerating medium is employed for packing the compressor shaft, leakage vapour is condensed by an injection of refrigerating medium, or by a jacket through which refrigerating medium, or evaporator solution is circulated. The refrigerating medium is supplied from the condenser 5 by a pipe 6 to a lantern ring 19 in the stuffing-box, between packings 13, and passes to the evaporator 1 by a pipe 6<1>, controlled by a valve 7 and provided with a cooler 22. Leakage towards the compressor 3 passes to the evaporator by the suction pipe 2, while leakage outwards passes to a lantern ring 18 draining into a chamber 25, from which it passes to the evaporator through a pipe 15<1>, controlled by a float valve. Vapour in the lantern space 18 is condensed by an injection of refrigerating medium, drawn from the pipe 6 by a pipe 8, and passing through a cooler 9. Vapour leaking past the gland 16 is withdrawn by a pipe 17, while liquid drains to the chamber 25 by a passage 23. When a centrifugal seal, Fig. 2, is employed the cooling liquid is supplied by a passage 12, and condensation liquid ecapes to the evaporator by a passage controlled by a float valve 15.
Patent GB-928051-A (GB)
Title: Improvements in and relating to wheel hubs having built-in dynamos
IPC: F16H1/32
Filed: 1960-06-07
Abstract: 928,051. Dynamos. FICHTEL & SACHS A.G. June 7, 1960 [July 22, 1959], No. 19986/60. Class 35. [Also in Group XXIV] In a wheel hub, particularly that of a pedal- or motor-cycle, having an eccentric gearing conveying drive from the hub shell 20 to the rotary armature 50 of a built-in dynamo, the armature is fixed to an eccentric roller 44 which rotatably and eccentrically mounts a roller 40 having two internal contact faces, one 64 driven by the shell 20 via an eccentricity compensating coupling 60 and the other 36 in driving engagement with an external contact face 34 of a stationary ring 32 concentric with the armature 50. The gearing may be friction or, as shown, toothed, and a roller bearing 42 is interposed between two rollers 40, 44. The coupling 60 is a swash-plate having splines 62 meshing with internal teeth 64, 66 of the roller 40 and a ring 24 fixed to the shell, is biased axially by a spring 68 to disengage the drive from teeth 66, and may be moved axially to engage the drive by a shifting member 70 and control rod 72 in the stationary hub axle 10. The armature 50 and roller 44 are fixed to a sleeve 46 rotatable on the axle 10, and the ring 32 is fixed to a shell 16 which carries one of the two wheel bearings 18, 26. Current from the armature is conveyed via a slip-ring 52 and terminal 54. The dynamo field is formed by a permanent magnet 56 and polepieces 58. Specification 805,712 is referred to.
Patent GB-373002-A (GB)
Title: Improvements in or relating to electrical transformers
IPC: H01F38/26
Filed: 1931-07-11
Abstract: 373,002. Transformers. ALL G EMEINE ELEKTRICIT€TS-GES., 2, Friedrich Karl-Ufer, Berlin. July 11, 1931, No. 20010. Convention date, July 11, 1930. [Class 38 (ii).] In voltage transformers, the core 1 is insulated from earth and from the low voltage secondary winding 3 by a unitary insulating structure 4, which has flanges 5, 6 separating the low voltage secondary 3 from the primary winding 2, which latter is connected to the core. The insulation may be of hard rubber. The primary winding can be sectioned or layered, and protected by a cover 10.
Patent GB-1452554-A (GB)
Title: Electron beam devices incorporating electron multipliers
IPC: H01J29/18
Filed: 1974-05-07
Abstract: 1452554 Electron multipliers MULLARD Ltd 6 Feb 1975 [7 May 1974] 20020/74 Addition to 1446774 Heading H1D The device claimed in claims 1 to 6 of the parent Specification includes an additional focusing electrode Mfl e.g. between insulators Dfl and Df2, between the final channel plate electrode and the focusing control electrode Mf2 for applying constant focusing to the hollow beams, while their widths are controlled by electrode Mf2. The additional electrode intercepts electrons from earlier stages and focuses electrons from the final stage so as to prevent incidence on the focusing electrode Mf2. The output dynode, and also the other dynodes, may be as in patent Specification 1434053 or a thin plate continuous dynode type with flared channels may be used, as in patent Specification 1417643 e.g. with flared (pyramidal) channels, and may be combined with a display screen with non-circular rather than circular concentric phosphor areas of differing colours. In Fig. 1, dimension d7 may be >d5 to reduce secondary emission from electrode Mf2 and d 4  equals d 3  for parallel holes in Mf2. The beams may be constricted so as not to be hollow at the screen and the phosphor patterns may have two rings with no central phosphor dot. A third colour may be produced by exciting part of both rings simultaneously. Dimensions and voltages are detailed. Fabrication may be by methods disclosed in Specification 1434053. As in the parent Specification voltage Vf 2  may be cyclically varied, and applications include radar and TV large area display c.r.t.s. and large area image intensifiers.
Patent GB-216740-A (GB)
Title: Improvements in cigarette and other cases
IPC: A24F15/14
Filed: 1923-08-04
Abstract: 216,740. Moulder, W. J. Aug. 4, 1923. Contents, delivering.-A device for ejecting cigarettes one at a time through an opening in one cage of a case and which can be applied to the case before or after the case has been finished, comprises a pair of telescopic members 1, 6, normally held in the extended position by a spring 11. The cigarettes which are fed towards the device by a spring 13 are guided by a support 12 which is recessed at 14 to receive the foot 5 of the sliding member 6. The case may be made of metal, tortoiseshell, erinoid, or leather.
Patent GB-689311-A (GB)
Title: Improvements in or relating to the separation of minerals having different specific gravities in a body of liquid medium
IPC: B03B11/00
Filed: 1948-07-29
Abstract: 689,311. Washing granular materials. RIDLEY, F. F. July 22, 1949 [July 29, 1948; July 31, 1948], Nos. 20196/48 and 20406/48. Class 82(ii) In a sink and float process of separating granular materials of the kind in which the heavier material sinks on to a frictional conveying surface for removal from the liquid, the conveying surface at its discharge point is slightly below the liquid surface at one end of the body of liquid, a flow of medium is induced immediately above the conveying surface in the same direction and throughout the travel of the sinks, and that part of the medium carrying the floats and middlings moves in the same direction as the conveyed sinks and discharges with the floats and middlings at the surface of the liquid intermediate the ends of the body of liquid, the remainder of the liquid discharging with the sinks by overflowing the conveying surface at its discharge point. A troughed rubber conveyer belt 3 moves over the concave bottom of the separating tank 1, passing over driving pulleys 6, 7, mitred idler rollers 4, delivery pulley 5 and tail pulley 8 and through a seal 10 at the lower end of the tank. The pulley 5 is adjustable on pillars 12 and the rollers 4 are so adjusted that the base of the trough formed in the belt 3 remains below the surface of the liquid in the tank. Floats pass into one compartment of a trough 13 over a guide surface 15b, middlings passing into the other compartment over a guide surface 15d; the partition plate 14 separating the compartments is removable. The guides 15b, 15d form part of a casing on the trough which also comprises guide surfaces 15c, 15e forming a venturi-like passage with the conveyer to increase the flow of liquid under the trough and carry the middlings beneath the trough. Paddles 16, 17, forming part of a series of paddles operated from a common shaft, assist movement of the floats and middlings along the surfaces 15b, 15d, which have adjustable tips 15f to vary the weir depths: a rotary paddle 22 is also provided. Liquid is introduced through the header 25, and at 27. Specifications 563,754, 563,779, 581,369, [Group XXX], and 595,590, are referred to.
Patent GB-216741-A (GB)
Title: An improved adjusting and locking device for screw threaded members
IPC: F16B39/10
Filed: 1923-08-08
Abstract: 216,741. Monnot, J. F. Aug. S, 1923 Adjusting bearings.-A device for adjusting and locking a screw-threaded member in its support comprises a non-threaded angularly-adjustable element which engages the screw-threaded member so that when it is adjusted it will turn and move the member axially in its support without moving axially itself, and means for retaining the element in its adjusted position. As shown applied to a diaphragm vibrator, Fig. 1, having a rotatable spindle a carrying a member C adapted to vibrate a diaphragm D, a bearing A is screwed into the vibrator casing E and is adjusted axially by a member F having a tongue f engaging an axial slot a<2> in the bearing A. A cap nut G screwed on the end of the bearing A locks the member F in its adjusted position and protects the bearing A from water and dust. In a modification, Fig. 4, the bearing A is adjusted by a cap F<1> having a tongue f<1x> engaging the slot a<2>. Axial movement of the cap F<1> is prevented by a flange e<1> and a spring washer H holds the parts in the adjusted position.
Patent GB-1123692-A (GB)
Title: Sun visor
Inventor: BROWN JOSEPH CECIL
IPC: B60J3/02
Filed: 1965-05-13
Abstract: 1,123,692. Sun visors. HOMERTON ENG. CO. Ltd. 20 Aug., 1965 [13 May, 1965], No. 20230/65. Heading B7J. A visor has a spine member 10 of metal which at its ends supports a metal bamboo or plastic spring strip or wire frame member 11, the members being covered with foam plastic and the visor being resiliently deformable in its own plane. The spine 10 may be of U-section, Fig. 2 (not shown) the arms 14 of which are at the ends of the member 10 bent over the member 11 to retain it. The frame 11 may be covered with a polythene sheet, e.g. a bag before application of the foam cover, and other fixing methods for the member 11 are illustrated, Figs. 3-6 (not shown) in which for example the member 10 is a tube and saddle or U-shaped clips are applied thereto. In another embodiment the member 11 is simply welded or glued to a plain tube forming the member 10.
Patent GB-406568-A (GB)
Title: Improvements in or relating to appliances for delivering substances in powder form
IPC: A47K5/10
Filed: 1933-07-18
Abstract: 406,568. Delivering measured quantities of granular &c. materials. REEVE, J. T., 67, The Grove, Osterley, Middlesex. July 18, 1933, No. 20309. [Class 106 (v).] In a powder delivery appliance of the kind comprising a powder receptacle 1 with a discharge outlet 3 controlled by the action of a valve 4 vertically movable relative to the outlet and a separator 7 which is normally raised slightly above the bottom 2 of the receptacle to permit a limited quantity of powder to flow into a zone near the outlet 3, and which, when powder is to be discharged, moves towards the bottom 2 of the receptacle to cut off the measured quantity of powder, which escapes upon movement of the valve to open the outlet 3, the separator normally resting upon the valve and being gravity controlled, the receptacle 1 is stationary and the valve 4 is actuated in the opening direction with consequent gravity actuation of the separator by a manipulating member 13 disposed exteriorly of the receptacle and operatively connected to the valve, e.g. by levers 9, 11, 12 and a suspension 8 which passes through the separator 7. The valve 4 has a sleeve portion 5 fitting the opening 3 to prevent discharge of powder before the measured quantity has been isolated, and has an annular boss 6 to limit its upward movement. The valve is flared to disseminate the powder as a fine spray. An outer base member 15 and a nozzle 16 direct the stream of powder in the downward direction. A spring 14 tends to keep the valve in the closed position. The actuating means for the valve may comprise a suspension extending through the top of the receptacle and normally kept in the closed position by a spring. British Specifications 203,876 and 308,954, [both in Class 106 (v)], and U.S.A. Specification 1,891,787 are referred to.
Patent GB-729538-A (GB)
Title: Improvements in manganese zinc ferrospinel compositions
IPC: C04B35/26
Filed: 1953-07-22
Abstract: 729,538. Magnetic compositions. RADIO. CORPORATION OF AMERICA. July 22, 1953 [Aug. 19, 1952], No. 20350/53. Class 38 (2). A magnetic core comprises a manganese-zinc ferrite incorporating 0.1 to 10 per cent by Weight of copper oxide. To a mixture comprising by weight 67 per cent ferric oxide, 10.5 per cent zinc oxide and 22.5 per cent manganese dioxide was added 2 per cent of copper oxide. The total mixture was fired at 1025 C. for 3 hours, and ball-milled for 5 hours with water, and dried. There was then added 8 per cent of water emulsion of paraffin wax, as binder, 1 per cent zinc stearate as moulding lubricant, and 20 per cent of water to form a mass which after mixing and drying was compression moulded to shape and fired at 1250 C. for 1 hour. Alternatively, a 2 per cent water solution of sodium carboxy methylcellulose was added, bodies were extrusion moulded, dried and fired at 1300 C. for 1 hour. Before firing, the lubricants and binders were driven off at 600 to 700 C. The binders might be any wax, natural resin, gum or synthetic resin, and the lubricant any metal soap of a long-chain fatty acid, amine soaps, or partially esterified triethanolamine fatty acid condensation products. Tables of magnetic properties demonstrating the increase in values of saturation permeability obtained by adding the copper oxide are given.
Patent GB-747077-A (GB)
Title: Geodetic instrument, in particular theodolite
IPC: G01C1/02
Filed: 1954-07-13
Abstract: 747,077. Surveying instruments. ZEISSSTIFTUNG, C., [trading as ZEISS, C., [Firm of]]. July 13, 1954 [Aug. 2, 1953], No. 20411/54. Class 97 (2). In a surveying instrument such as a theodolite having a tubular level and a micrometer for reading vertical angles, the level is tiltably. mounted and so coupled with the micrometer that it is inclined in setting the micrometer, and at least one bubble end of the level registers on a scale a value corresponding to its inclination. As shown in Fig. 1, a level 2 with a bubble 3 of constant length is mounted in one of the uprights 1 of the instrument. An image of the bubble produced by a lens 6 and prisms 4, 5 is visible in a viewing window 7 against a scale 8 (Fig. 2). The graduations on a vertical circle 10 which moves with the telescope of the instrument are also seen in window 7 by means of a lens 13 and prisms 11, 14. The graduated circle and the bubble are illuminated by a mirror 25 reflecting light through a window 24, and a prism 26 mounted within the upright 1. A plane parallel plate 12 is mounted between prism 11 and lens 13 on a shaft 16 connected to a rod 18 (see also Fig. 3) slidable in a sleeve 22 pivoted to a rod 19, which is connected to a shaft 17 carrying the level 2. A micrometer knob 23 is fast with a cam 21 against which rod 19 is urged by a spring 20. Alternatively, the rods may bear against separate cams fast with knob 23. The end of the bubble, which would coincide with zero on the scale 8 if the instrument were accurately level, indicates a certain reading when the instrument is coarse-levelled. The telescope is laid on the target, and the scale on circle 10 is observed. If the visible graduation 91 on the circle does not coincide with any graduation of a scale 15 observed in window 7, the micrometer knob 23 is turned, rocking the plate 12 through rods 18, 19 and so displacing the image of graduation 91 that it co-incides with a graduation of scale 15. At the same time level 2 is tilted, so that the bubble image moves over scale 8. The units are then read from the circle graduation 91, the first decimal figure from the graduation on scale 15 coinciding therewith, and the second and third decimal figures from the position of the end of the bubble image on scale 8. The correction for the instruments being out of level, originally indicated on scale 8, is thus automatically added.
Patent GB-1387095-A (GB)
Title: Filled communication cables with irradiated polyethylene  insulation
IPC: H01B13/14
Filed: 1973-04-30
Abstract: 1387095 Filled cable GENERAL CABLE CORP 30 April 1973 20422/73 Heading H1A Polyethylene insulation of conductors 10a is partially cross-linked to prevent contact with the filling compound (58, Fig. 3, not shown), from rendering it liable to cracking when conductor ends are terminated. The compound (58) fills all the spaces inside an electrostatic shield 42. The cross-linking is produced by 5-15 megarads of electron beam irradiation after the insulation is extruded at 12 but before the conductors 10a are coated with compound at 22. The compound is preferably a petrolatum/ polyethylene mixture. The conductors 10a are compressed by a die 20 and held together by tapes 28 to form the cable core and then more compound is applied. Then a die 40 forms a lap seam (44) in a 200Ám thick corrugated Al tape 34 to produce the electrostatic shield 42. The tape 34 has an anti-corrosion plastics coating on both sides. Finally a plastics jacket 50 is extruded, the heat of extrusion melting the plastics coating on the tape 34 to stick the edges together at the seam (44).
Patent GB-279794-A (GB)
IPC: G01S3/08
Filed: 1927-08-03
Abstract: 279,794. Esau, A. Oct. 29, 1926, [Convention date]. Aerials; directive signalling.-In order to secure directional reception independent of the vagaries due to changes in polarization of the incoming waves, particularly in the case of aircraft or of stations situated at a considerable height above the earth's surface, four non-directional antennae a1 - - a4 are connected diagonally in pairs through coils s1, s2, which are in turn coupled to a goniometer search coil s3. The centres of the coils s1, s2 are earthed. The side of the square formed by the four antennae should be one-tenth or less of the signal wavelength.
Patent GB-1321137-A (GB)
Title: Focus controls for cameras
IPC: G03B3/04
Filed: 1971-04-19
Abstract: 1321137 Focusing apparatus WESTERN ELECTRIC CO Inc 19 April 1971 [28 Jan 1970] 20497/71 Heading G2A Focus control apparatus for maintaining a predetermined distance between a camera lens 14 and a photographic plate 10 includes first and second force applying means between which a plate 10 is supportable, the forces being such that, in operation, they are in equilibrium when the distance between the lens and the plate is equal to the predetermined distance. The first means, preferably a first gas-thrust bearing 12 applies a first force to the plate, inversely proportional to the distance between the plate 10 and the lens 14, while the second means, preferably a second gas-thrust bearing 22 applies a second force to the plate in opposition to the first, the second force being substantially independent of the distance between the plate 10 and the lens 14. The plate 10 is held by a spring (18) Fig. 1 (not shown) and diaphragm (20) arrangement, the stiffness of which is approximately 1/100th that of the bearing 12. The bearing 22 is flexibly mounted and supported by a pneumatic drive 24. The apparatus is used in a precision camera used in e.g. the making of integrated circuit masks.