baber/WOPTO huggingface dataset:
Patent GB-905629-A (GB)
Title: Improvements relating to glass melting
Inventor: GELL PHILIP ANTHONY MAUNSELL
IPC: C03B5/20
Filed: 1959-05-05
Abstract: 905,629. Glass manufacture. ELEMELT Ltd. May 5, 1960 [May 5, 1959], No. 15289/59. Class 56. [Also in Group XII] To prevent deterioration of molten glass, a substantial proportion of the upwardly-presented surface of the glass is covered with a refractory material which floats on the surface and which it does not react with or contaminate. The glass melting chamber 10 contains a body 11 of molten glass, with its batch crust 13 covering the surface, which is melted by electric current through electrodes 12. The molten glass 11 passes by a duct 15 to the feeder chamber 16 which has a preheater, not shown, separated by a transverse wall 18 from which 'the molten glass 17 is fed, as by a plunger. The glass 17 in feeder chamber 16 is substantially wholly covered up to the wall 18 by a plurality of plates or blocks 23 which float freely on the surface of the glass. The blocks 23 are of fused solidified silica or sillimanite, or a mixture of alumina and silica heated and sintered. Refractory materials of higher specific gravity may be used in hollow form. Specifications 835,201 and 835,203 are referred to.
Patent GB-1501961-A (GB)
Title: Ophthalmic lenses and methods for their manufacture
IPC: C03C17/02
Filed: 1975-04-15
Abstract: 1501961 Ophthalmic lens AMERICAN OPTICAL CORP 15 April 1975 [15 April 1974] 15427/75 Heading C1M An ophthalmic lens comprises a glass element having a thinner glass cladding fused (by melting both the element and cladding glasses) on at least one major surface thereof, the cladding having a lower coefficient of thermal expansion than the element, so that the glasses of the element and cladding are respectively under tension and compression along their interface. Preferably the cladding is applied to the formed element and fused thereto, the fused combination then being shaped to form a lens. A protective glass layer may be applied over the cladding layer, this protective layer being removed (e.g. by leaching with acid) after the fused combination has been shaped to the desired lens profile. In a first embodiment (Fig. 1) a rod 16 is disposed in a tube 18 of cladding glass and a sleeve 20 of acid-soluble protective glass provided over tube 18. The assembly 14 is then heatsoftened by heating element 22 and necked down at section 26 drawing rollers 28 to form lens preform 12. In a second embodiment (Fig.2) a tank 34 comprises three compartments 36, 38, 40 containing molten glasses 16', 18' and 20' (for element, cladding and protective sheath respectively), the glasses being simultaneously extruded through triple orifice 42 and shaped by rollers 28<SP>1</SP> to a lens preform 12'. The lens preform 12 or 12<SP>1</SP> may then be flattened by rolling or by floating on molten tin. The lens preform 12 or 12<SP>1</SP> is then shaped to the desired profile (e.g. a meniscus configuration, Figs. 7-9, not shown), preferably by pressing between a mould element and plunger of, e.g., cast iron, steel, ceramic or silicon carbide (Fig. 5, not shown). The protective glass sheath may then be removed by leaching in, e.g., 10% (by volume) hydrochloric acid (Fig. 6, not shown). The cladding glass 18 or 18<SP>1</SP> may be coloured.
Patent GB-291955-A (GB)
Title: Improved anti-splash fitting for siphon bottles
IPC: B67D1/04
Filed: 1927-06-10
Abstract: 291,955. Simmonds, P. C. June 10, 1927. Siphon bottles. - An anti-splash siphon fitting comprises a bulbous member 1 preferably of blown glass having an upturned tubular part 4 connected with the siphon by a rubber sleeve 6 and a tapered lower part 2 which is bulged at 9 behind the discharge opening 3.
Patent GB-1492476-A (GB)
Title: Electro-acoustic transducer apparatus
IPC: H04R1/22
Filed: 1975-04-16
Abstract: 1492476 Microphones; loud-speakers; acoustic horns H PEIKER 16 April 1975 [26 April 1974] 15545/75 Headings H4J and H4X A loud-speaker 3 and microphone 7 are arranged in a cylindrical housing 1 with the loudspeaker positioned adjacent an opening 2 and the microphone positioned in a cavity 4 behind the loud-speaker, slots 8, 9 being provided in the casing to provide sound access to the microphone. A transistor amplifier for the loud-speaker and/or microphone may be housed in the space 12. A horn (Fig. 2) may be mounted between the speaker 3 and the opening 2. In another embodiment the distance between the speaker 3 and opening 2 may be adjustable either by moving the speaker or alternatively by providing the housing 1 with an adjustable end cap. During reproduction the microphone may be used as a high frequency tweeter, the slots 9 being closed during reproduction by a sleeve, not shown, coupled to a change-over switch by means not described or shown.
Patent GB-310685-A (GB)
Title: Improvements in packing washers or grummets and joints made therewith
IPC: F16B43/00
Filed: 1928-05-26
Abstract: 310,685. Briggs, A. S. May 26, 1928. Joint-making packing.-A washer, particularly applicable for the bolts of tunnel sections &c., comprises a thick layer 3 of bitumen, or bituminous substance, a layer 4 of bituminized fabric, a thin layer 5 of bitumen and a layer 6 of lead. The washer is covered by a lead or other washer 7 which extends beyond its periphery. As tightening proceeds the washer 7 imprisons the outer periphery of the layer 3, and the bitumen is forced into the clearances between the bolt and the plate 10 and washer 7. The washer is applicable for square bolts. A single washer may be formed with several bolt apertures.
Patent GB-1009353-A (GB)
Title: Coupling of pressure fluid lines where one is subjected to trapped pressure conditions
IPC: F16L37/23
Filed: 1962-04-24
Abstract: 1,009,353. Pipe couplings. PIONEER HYDRAULICS Inc. April 24, 1962 [Nov. 9, 1961], No. 15655/62. Heading F2G. A pipe coupling comprises two telescopically co-operating body members 11, 12 connected to a source of fluid pressure and a fluid pressurized device respectively, releasable locking means 24, 25, 26, an opposed annular valve seats 15, 17 within the bodies and disposed in close coaxial spaced relation when the coupling is effected. A peripheral part of each of two valve members 16, 18 protrudes through its respective seat 15, 17, the protrusions engaging during the final coupling movement. These valve elements 15, 17 are urged against their seats by resilient means 23, 20, the former having a greater compressive strength than the latter. An abutment 19 is provided in the device connected body 12 whereby both valve members in their operative positions are equally spaced from their respective valve seats. The valve element 16 is mounted for reciprocal movement beyond its operative position on a member 21 slidably mounted in a sleeve 22 which in turn is screwed into body member 11. When the body members are fully telescoped they are locked together by balls 24 housed in a groove 12b and held by a spring biased sleeve 2, 5, the movement of the sleeve being limited by a snap ring 27. The joint is sealed by a resilient 0-ring 28. In operation, when the body members are telescoped, trapped pressure within body member 12 effects through the engagement of valve members 16, 18 the opening of the former to beyond its operative position. Pressure is then built up in body member 11 from the source of fluid pressure until valve member 18 is opened and urged against its abutment 19. The abutment surfaces 19b, 21c for the valve members are preferably of a smaller radius of curvature than those of the valve elements. In a modification (Figs. 6, 7, 8, not shown) the ball valve member of the source connected body is mounted in a spigot which slides within a sleeve member, splines mounted in the bore surround and guide the valve member in its reciprocations. A modified valve member (Fig. 9, not shown) comprises a spigot sliding within a sleeve and a head integral with the spigot and possessing a substantially frusto-conical protrusion. A gasket is mounted upon the head to seal the valve seat.
Patent GB-364495-A (GB)
Title: Improvements in foot arch supports
IPC: A43B7/22
Filed: 1931-05-28
Abstract: A foot-arch support comprising a hollow elastic sock filled with a substance adapted, under the pressure of the foot, to readjust itself within the covering material until it fits the foot arch and then to set hard, as described in the parent Specification, is incorporated with the boot or shoe and is adapted to be rendered plastic on being heated within the latter above the temperature of the foot.  The sock may be pasted or stitched on to the insole and may itself serve as a covering sole or may be arranged under the usual boot lining.
Patent GB-1182606-A (GB)
Title: Rotary Liquid Pumps
Inventor: SKINNER ROBERT THOMAS JOHN
IPC: F04D15/00
Filed: 1966-04-12
Abstract: 1,182,606. Centrifugal and circumferential-flow pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. May 1, 1967 [April 12, 1966], No.15803/66. Heading F1C. In a pump for a liquid, e.g. gas turbine engine fuel, which may contain dirt or grit, and comprising a rotor 18 having peripheral blades 19 and operating within a chamber 12, aportion of the liquid discharged through an outlet 32 is supplied via a filter 33 and a passage 35, 31, 29, 28 to flow from annular channels 26, 27 in the side faces of the rotor to prevent ingress of dirt or grit from the chamber 12 between the side faces and the adjacent walls 14, 20. The filtered liquid also lubricates the bearings 36. The rotor 18 is of circumferential flow type, co-operating with side channels 21 bounded by an annular piston 23 which can be adjusted axially to vary the pump output. The circumferential flow stage is preceded by a centrifugal stage comprising an impeller 17.
Patent GB-981521-A (GB)
Title: New analogues of griseofulvin and their preparation
Inventor: WALKER THOMAS
Filed: 1960-05-04
Abstract: The invention comprises enol halides of grisan acids having the skeletal formulae <FORM:0981521/C2/1> in which Hal represents a halogen atom, particularly those compounds bearing alkoxy, alkenoxy, aralkoxy, aryloxy, alkyl, alkenyl, aralkyl, aryl groups or halogen atoms as substituents especially in positions 4, 6, 7, and 31; together with a process for their preparation by reacting the corresponding grisan acids with a halogenating agent serving to convert a carboxyl group into an acid halide group, preferably in the presence of dimethyl formamide or an inert solvent.  The preferred halogenating agent is phosphorus oxychloride and an alkali or alkaline earth metal halide is preferably present during the halogenation. The invention further relates to a process for the preparation of compounds of the skeletal formulae <FORM:0981521/C2/2> or <FORM:0981521/C2/3> in which R represents an alkoxy, alkenoxy, aralkoxy, aryloxy, alkylthio, alkenylthio, aralkylthio, arylthio, or a primary, secondary or tertiary amino group, by reacting a compound RH with the appropriate grisan enol halide, preferably in an inert solvent and in the presence of an acid-binding agent.  The invention is illustrated by 29 detailed examples.
Patent GB-1458087-A (GB)
Title: Springs
IPC: F16F1/26
Filed: 1974-04-10
Abstract: 1458087 Spring units RJORN 10 April 1974 [12 Sept 1973] 15962/74 Heading F2S A spring comprises two leaves 1, 2, with elastomeric material 7, e.g. rubber in the space between parallel overlapping portions, with non-overlapping portions extending in opposite directions from the overlapping portions, and wherein an end of each non-overlapping portion is adapted to receive therethrough a fastening member. There may be more than one-pair of leaves, with alternate leaves either projecting in the same direction, Fig. 1, or projecting in the same direction, Figs. 4 and 5 (not shown). The extreme ends may have fixing holes 18, 19, Fig. 1, a fixing eye 39, Fig. 5 (not shown), and spacers 12, 13, Fig. 1, of hard paper, asbestos or plastics. The elastomeric layer may extend beyond the overlapping portions of adjacent leaves as in Fig. 3 (not shown). The leaves may converge in width, Figs. 2 and 5 (not shown) and may be fastened at the centre by a bolt 52, Fig. 7 (not shown).
Patent GB-1493627-A (GB)
Title: Sheet delivery apparatus
IPC: G06K13/073
Filed: 1974-04-10
Abstract: 1493627 Checking encoding of tickets CONTROL SYSTEMS Ltd 10 April 1975 [10 April 1974] 15979/74 Heading G4T [Also in Division B8] A delivery path for a sheet, e.g. a ticket, is defined on one side by an endless belt 10 and on the other side by two pairs of rollers 6, 5 and 4, 3, a guide plate 2, 1 having an associated transducer 32, 26 being located between the rollers of each respective pair. A ticket from a ticket issuing machine (not shown), enters the apparatus at B and is fed past the transducers 32, 26 which comprise respectively a magnetic recording head and a magnetic read head. If the read data corresponds with the data fed to the recording head, a solenoid 35 is energized to pivot a guide 15 clockwise about pin 34 to cause the ticket to pass over a guide 16 to an exit point C. If the data does not correspond, the solenoid is not energized and the ticket passes through the gap between guides 15 and 16 to a reject receptacle (not shown). The endless belt 10 is internally toothed and passes around drive roller 13, tensioning roller 14 and rollers 11 and 12. Shoes 27, 33 are spring-urged towards the respective heads, the nearest position of each shoe to its head being adjustable by a rotatable eccentric stop 31. Electronic circuits, Figs. 2 and 3 (not shown), include a shift register, from which the code to be recorded on the ticket is sent to the record head 32, photo-cells which sense passage of the ticket and initiate record and read functions, and a comparator which receives the read data and the output of the shift retister and emits either a PASS or FAIL signal, the former initiating energization of the solenoid 35.
Patent GB-420675-A (GB)
Title: Improvements in means for silencing gaseous currents
IPC: F01N1/08
Filed: 1933-06-02
Abstract: 420,675. Silencing gaseous currents. BLANCHARD, J., 111, Upper Richmond Road, Putney, London. June 2, 1933, No. 16042. [Class 7 (ii)] A casing 1 encloses conical chambers 6, 7 and has an end portion 50 enclosing a double frusto-conical chamber 52, 53, the space between which and the casing is filled with sound absorbent material such as asbestos or coke, or sheet asbestos may be wrapped round the frusta. The conical passage 53 leads to an eccentric aperture 4 in the base 2 of the chamber 6 and, likewise, the chamber 6 leads to an eccentric aperture in the base of chamber 7. Behind each eccentric aperture is located a deflecting plate 10 comprising two portions 11, 12 of which 11 is inclined to the longitudinal axis of the silencer casing, while the portion 12 is parallel thereto. The deflectors may whirl the gases in the same or in opposite directions. The chamber 52, 53 allows initial expansion of the gases. Specification 366,257 is referred to.
Patent GB-1383755-A (GB)
Title: Bottle closure
IPC: B65D41/17
Filed: 1971-05-20
Abstract: 1383755 Caps for bottles BEECHAM GROUP Ltd 16 May 1972 [20 May 1971] 16053/71 Addition to 1169250 Heading B8T The closure of Specification 1,169,250 is modified in that the neck portion 5 is elliptical in plan. One side of the closure may be longer than the other as disclosed in Specification 1,169,250.
Patent GB-403080-A (GB)
Title: Improvements in and relating to feed-water heaters of the contact type
IPC: F22D1/28
Filed: 1932-06-07
Abstract: 403,080. Heating feedwater. REEVE, A. W., 62, Croft Terrace, Jarrow, Co. Durham. June 7, 1932, No. 16122. [Class 64 (i).] Feedwater is heated in an annular chamber 1 by low pressure or exhaust steam which is led into the chamber through inclined ports 6 so as to give the water a whirling motion and discharge it with an increased pressure through a tangential outlet 51. Feedwater in a float chamber 4 is drawn into the annular chamber 1 through apertures 8 in a central pipe 3. Steam is conducted into an annular chamber 5 below the chamber 1. The chamber 5 may be divided by vertical partitions into several compartments having separate inlet connections and outlet ports 6.
Patent GB-550182-A (GB)
Title: Improvements in turning centres for lathes or the like
IPC: B23B23/02
Filed: 1941-12-13
Abstract: 550,182. Lathe centres. SHOT TON, J. E. Dec. 13, 1941, No 16122. Addition to 550,080 [Class 83 (iii)] Lathe centres as in the parent Specification have the pins controlling the setting of the centre prevented from rotating whilst in use so as to vary the setting. The pins 3 that pass through inclined slots 4 in the shank 2 of the centre extend into axial slots 7 in a collar 5 locked, after adjustment, by a screw 6. The axial slots permit the spring-yield described in the parent Specification. In a modification the slots in the shank are axial and those in the collar are inclined or helical.
Patent GB-635243-A (GB)
Title: Improvements in engine starter drives
IPC: F02N15/02
Filed: 1947-06-18
Abstract: 635,243. Turning-gear. BENDIX AVIATION CORPORATION. June 18, 1947, No. 16132. Convention date, July 1, 1946. [Class 7 (v)] In an engine-starter drive including a driving cam 17 operatively connected to a power shaft 1, and a driven cam 18 connected by a friction clutch 19 to a screw shaft 6 on which is mounted a pinion 11 for movement into and out of mesh with the engine to be started, means 29, in the form of bolts, are provided for adjusting the pressure of yielding means 27 loading the clutch, the cam being adapted to co-operate one with the other to relieve the pressure applied by the yielding means to the clutch ; the friction clutch members may be pressed into engagement by spring means 27 acting on a thrust ring 26 which is adapted to be shifted by a member 33 connected to the cam 17 to relieve the pressure on the thrust ring 26 when the cams are maintained in axial displacement by the transmission of overload torque therethrough. The power shaft 1 has a splined reduced portion 2 in order to receive the cam 17 whilst the cam 18 is slidably journalled upon a further reduced but smooth portion 5 of the shaft 1, which latter has also one end of the screw shaft 6 slidably journalled thereon. The other end of the screw shaft 6 is journalled in an outboard bearing 8. The pinion 11 threaded upon the screw shaft is retained in the inoperative position against a stop 14 by an anti-drift spring. The stop 14, which is secured to the screw shaft 6 has a barrel 21 attached to it that is connected to member 18 by the multi-plate friction-clutch 19. The spring-loaded thrust ring 26 forces the clutch plates and hence a plate 24 against a radial flange 25 on the member 18, and a flange 34 on the ring 26 engages the flange 33 on the cam 17. Upon shock load caused by engagement of the pinion with the engine, the driving and driven members 17 and 18 axially separate, due to the interactions of the corresponding cam surfaces, whereupon the clutch 19 slips but continues to transmit the same amount of torque as before. When the overload is removed the members 17 and 18 re-engage and transmit cranking torque in the usual manner, unless the engine should backfire in which case the clutch again slips.
Patent GB-380055-A (GB)
Title: Improvements in and relating to the securing and strengthening of the ends of drums,bins or the like metal containers
IPC: B65D41/16
Filed: 1931-06-04
Abstract: 380,055. Strengthening the ends of metal drums &c. TODD, A. T., TODD, M., and WHITFIELD, D. B. R., Iron Works, Canal Bank, St. Helens, Lancashire. June 4, 1931, No. 16133. [Class 21.] Containers of steel or other metal such as drums, bins and the like are strengthened at the ends by hoops of single or double channel section the bottom of the channel contacting the wall of the container while the flanges of the hoop project substantially normally. The hoops may also assist to secure the end closures. In Fig. 2 a channel hoop 3 is shown secured between a continuous or discontinuous abutment 2 and a flange 4. A permanent closure may be made by flanging over the edge 6 of a dished end 5. The joint may be treated with a caulking solution or may be soldered, or a strip of cotton, rubber, rubbered fabric, leather, &c. may be glued or otherwise secured to the flange of the end of the body or to the web of the channel hoop or to any or all of these. A removable end is shown in Fig. 4, a flange 7 of the closure being slotted radially at intervals and being secured by hammering and removed by a suitable lever. A packing ring may be provided beneath the flange 7. The channel ring may also be positioned as shown in Fig. 8. An end with a flange 14 curved to engage a double hoop 13 is shown in Fig. 9. The flange 14 may be formed separately and spun on the flange of the end. These two forms of end closure may be employed with a single channelled ring. A double channelled ring may be employed instead of the single channelled ring in any of the forms described.
Patent GB-1078376-A (GB)
Title: Improvements in or relating to methods of and means for electron beam melting and casting of metals
IPC: C22B9/22
Filed: 1965-04-15
Abstract: 1,078,376. Casting processes; ingot moulds. STAUFFER CHEMICAL CO. April 15, 1965 [May 18, 1964], No. 16145/65. Heading B3F. [Also in Divisions F4 and H1] Metal is melted in a water-jacketed crucible 15 by an electron gun 29 (in a vacuum chamber 25 so that volatile impurities are released) and, as the top melts, the crucible bottom (16) is raised so that metal overflows into a trough 42 and passes to a second crucible 40 of which the bottom (16) is lowered while the metal is cast therein. Electron guns 30-32 heat the metal in the trough 42 and second crucible 40, while for further purification the melt may be returned to the first crucible 15. The crucible 15 may be filled by a single ingot or pieces of metal before melting or powder or chips may be passed in by a trough 20, before or after melting has commenced. Further crucibles may be provided for cascade or alternative flow operation and weirs for flow control. The electron guns may be below the metal level, the beams being upwardly directed and downwardly deflected by magnetic fields.
Patent GB-430544-A (GB)
Title: Improvements in or relating to cathode structures suitable for use in thermionic valves
IPC: H01J1/20
Filed: 1934-05-30
Abstract: 430,544. Thermionic cathodes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Shrader, T. M. ; 40, Laurel Drive, West Summit, New Jersey, U.S.A.) May 30, 1934, No. 16176. Convention date, July 7, 1933. [Class 39 (i)] The heater of an indirectly heated cathode is formed by coating a tungsten or molybdenum rod 1 with aluminium oxide, placing a double, helical tungsten coil 3 thereon and coating this coil; the rod is about 20 mils. in diameter, the insulating coatings being not more than 15 mils thick. The coatings are sprayed on the rod and coil and are then fired or baked. The complete heater is inserted in an oxide coated nickel sleeve 5.