baber/WOPTO huggingface dataset:
Patent GB-1428447-A (GB)
Title: Terminal for use with an optical fibre
IPC: G02B6/38
Filed: 1973-10-22
Abstract: 1428447 Light guides NIPPON ELECTRIC CO Ltd 22 Oct 1973 [23 Oct 1972] 49129/73 Heading G2J A terminal 1 for an optic fibre 3 which has a thermoplastics coating 4 has an axial passage which is wider at one end 5 than at the other end 7, the passage having a tapered portion 6 between the ends. The coated fibre is inserted in the end 5, the terminal 1 having been pre-heated so that the coating 4 is softened and removed from the fibre, a hole 10 accommodating removed plastics material. The end 7 has a recess 11 which is filled with a bonding and fixing agent 12 which, with the end of the fibre 3, is polished optically flat. Two fibres may be connected end-to-end, as illustrated, a metal sleeve 13 being provided.
Patent GB-1367621-A (GB)
Title: Folding furniture
IPC: A47B5/04
Filed: 1970-10-16
Abstract: 1367621 Bracket furniture P W FITZGERALD 6 Jan 1972 [16 Oct 1970] 49251/70 Heading A4B A table leaf 10 is mounted on a vertical board 12 so as to fold between horizontal and vertical positions by linkages 14, each linkage comprising longer and shorter arms 16, 18 pivotally carrying at one end brackets 22, 20 secured to leaf 10 and pivotally carrying at their other ends brackets 17, 19 secured to board 12. Leaf 10 is locked in the horizontal position by manually releasable spring urged sliding bars 28 mounted on leaf 10 engaging between jaws 32 on board 12. The distances between brackets 22, 20 and between brackets 17, 19 may be adjustable. The table leaf 10 may be replaced by a seat, ironing board or shelf.
Patent GB-1300451-A (GB)
Title: A mechanism for feeding a cartridge belt through a channel to an automatic firearm
IPC: F41A9/51
Filed: 1970-10-21
Abstract: 1300451 Cartridge belt feed mechanism WERKZEUGMASCHINENFABRIK OERLIKON-BUHRLE AG 21 Oct 1970 [28 Oct 1969] 49861/70 Heading F3C A cartridge belt feed mechanism comprises an hydraulic motor in the fluid circuit of which a relief valve is situated so that on the motor being overloaded the relief valve is actuated to depressurize the motor. The belt is fed through a channel 1 and the overload arrangement comes into operation when, during firing of the gun, the cartridge belt becomes jammed in the channel whence the motor is stopped. The mechanism further comprises a feed wheel having teeth 35 there being an arrangement within the wheel for driving the wheel in the feed direction and, after the stopping of the motor allowing the wheel to rotate limitedly contrary to its feed direction to relieve jamming forces acting on the cartridge belt (Fig. 4, not shown). The limitation on the "reverse" rotation is achieved by a fixed pin working in a slot of a plate of the arrangement (Fig. 5, not shown). The pin may be withdrawn either hydraulically or manually for "reverse" rotation of the feed wheel when loading ammunition boxes 7 through the channel 1 (Fig. 3, not shown). The feed channel 1 is two relatively rotatable portions 2, 10 therebeing a disc 13 interposed therebetween. The disc 13 is provided with a slot for the passage of the cartridge belt, the belts being guided towards the slot by a flexible rail and through the slot by rollers (Fig. 2, not shown).
Patent GB-1029539-A (GB)
Title: Improvements relating to ceramic dielectrics
Inventor: ELYARD CHARLES ANTHONY
Filed: 1963-12-18
Abstract: A ceramic material comprises a sintered mixture of the titanates of the metals magnesium, strontium, lead and bismuth, and optionally lanthanum; niobium may replace part of the titanium of the titanates. The mixture is stoichiometric, or non-stoichiometric to the extent of a deficiency of up to 10% titanium atoms.  A preferred mixture comprises 10-65% MgTiO3, 10-45% SrTiO3, 5-35% PbTiO3, 5-40% Bi2Ti2O7 and 0.3% La2Ti2O7 with 0-15 atomic per cent of the titanium replaced by an equivalent amount of niobium, and is prepared either by reacting titanium dioxide, niobium pentoxide and the individual oxides (or their precursors) of the other metals at elevated temperatures and mixing and sintering the resultant titanates or by mixing titanium dioxide and niobium pentoxide with the oxides (or their precursors) of the other metals and heating them to produce a metal titanate mixture.
Patent GB-1442383-A (GB)
Title: Stripline components
IPC: H01P7/08
Filed: 1973-10-26
Abstract: 1442383 Stripline circuits and resonators DEFENCE SECRETARY OF STATE FOR 15 Oct 1974 [26 Oct 1973] 50040/73 Heading H1W In order to prevent unwanted propagation of surface-wave modes from open-circuited terminations of stripline components, part of the substrate is removed in the vicinity of the termination or, in the case of a laminar resonator along the open-circuited boundary of the resonator. The material removed may be replaced by material of lower dielectric constant. As shown in Fig. 1, a portion 6 of the alumina substrate 2 is removed in the vicinity of an open circuit 5 terminating the stub 4. The open-circuited boundary 25 of a circular laminar resonator 24 is surrounded by a trough 26 formed in the substrate 2. Rectangular and linear resonators are also described.
Patent GB-1357157-A (GB)
Title: Luggage trolley
IPC: B62B1/12
Filed: 1971-11-01
Abstract: 1357157 Luggage trolley NORLAND GAZELLE (TRAVEL GOODS) Ltd 1 Feb 1973 [1 Nov 1971] 50694/71 Heading B7B A collapsible luggage trolley has wheels 3 on an axle 2 carried by a chassis 1 having a crossmember 4 pivotally connected to a handle 5. The member 4 forms part of a platform 6 which is moved upwardly by downward movement of an operating member 13 which engages an abutment member 12 welded to the chassis 1. A further platform 8 is pivotally mounted by ears 9 on the member 4 and rests on a support 7.
Patent GB-507407-A (GB)
Abstract: 507,407. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc. Nov. 8, 1937, No. 13120/39. Convention date, Nov. 6, 1936. Divided out of 505,495. [Class 97 (iii)] Torques to produce precession of a directional gyroscope about the vertical axis are applied by air jets directed on to a serrated sector or the like 22 carried by the rotor casing 5 in a vertical plane through the rotor axis, the air jets issuing from nozzles 23, 24 mounted on the vertical ring and supplied with air under the control of means outside the instrument. The controlling means may comprise a pair of pushbuttons or a single knob which may be turned in one or other direction to permit air to be supplied to one or other of the nozzles 23, 24 respectively. Specification 477,012 is referred to.
Patent GB-1420318-A (GB)
Title: Method and apparatus for manufaccturing an article from a  particulate material
IPC: B22F3/02
Filed: 1972-11-04
Abstract: 1420318 Compression moulding ROLLSROYCE (1971) Ltd 29 Oct 1973 [4 Nov 1972] 50962/72 Heading B5A A method of making an article from powder comprises loading the powder into a die and applying pressure to make a preform, the pressure being applied initially to that part of the powder which has the greatest dimension in the direction of pressing and then to the remainder of the powder in order of diminishing dimension in the direction of pressing. The free surface of the powder, after loading into the die may be levelled off to form a top face composed of upper and lower platforms 20, 22 interconnected by a sloping portion 24. The powder is pressed by a plunger 16 having a working face matching the upper face of the powder apart from the connecting portion 30 which has a smaller angle of inclination to the horizontal than that of the powder so that as the plunger 16 is lowered pressure is applied in order of diminishing thickness of the powder with the result that a uniform density is obtained (Figs. 3, 4). The die 10 has a vertically movable base 14 which is raised to its upper position to allow the powder to be loaded (Fig. 1) and then lowered to the position shown for pressing of the powder. The preform formed from the powder may be heated to 1850‹ C. and pressed at 300 p.s.i. in a further die to form the article. The material is silicon carbide or silicon nitride which may comprise magnesium oxide. The article may be rotor or stator blades or guide vanes for gas turbine engines.
Patent GB-1128672-A (GB)
Title: Article handling apparatus
Inventor: WILD JOHN THOMAS HENRY
IPC: B30B15/32
Filed: 1964-12-15
Abstract: 1,128,672. Handling mould forms. DAVY & UNITED ENG. CO. Ltd. 15 Nov., 1965 [15 Dec., 1964], No. 50974/64. Heading B8A. [Also in Division B5] For transferring a mould form 46 from the ejector piston 44 of a moulding machine to the arms 50 of a discharge conveyer there is employed a rotary conveyer 100 which has two arms 31, 32 carried by horizontal shaft 33 driven from motor 38 so as to be rotatable about the horizontal axis and carried by vertical shaft 22 rotatable about its axis by rack and pinion 28, 27. Additionally each arm carries a cylinder and piston 40, 41 and magnets 43. Operation.-The device is swung about its vertical axis till magnets 43 of arm 31 are situated beneath the mould form 46 carried by moulding press ejector piston 44, as shown at the left of Fig. 2. Piston 44 is lowered to lower the form on to magnets 43 and piston 41 is lowered by cylinder 40 so that form 46 is secured within arm 31. The device is then rotated about its vertical axis and also about its horizontal axis 33 till form 46 is positioned over the arms 50 of the discharge conveyer as shown at the right of Fig. 2. Piston 41 is released by cylinder 40 so that form 46 now resting on arms 50 is left there when the device is again rotated. The cycle is repeated.
Patent GB-1480638-A (GB)
Title: Timing circuits
IPC: F23N5/02
Filed: 1974-11-26
Abstract: 1480638 Burner ignition and control JOHNSON SERVICE CO 26 Nov 1974 [1 March 1974] 51214/74 Heading F4T [Also in Division H2] A control system for the ignition of a gas burner comprises a fail-safe timing circuit having first switch means 39 responsive to a request signal to activate a main valve 18 and ignition 23, second switch means 37 to enable switch means 39 to activate, a timing circuit to disable the switch means 37 after a predetermined time (4 seconds) such that attempt at ignition is halted and valve 18 is closed and means responsive to a flame detector 29 to prevent the disable means from deactivating the switch means 37.
Patent GB-1328407-A (GB)
Title: Method and apparatus for correcting weft distortions in woven webs
IPC: D06H3/12
Filed: 1970-10-28
Abstract: 1328407 Laminating fabrics MOUNT HOPE MACHINERY Ltd 28 Oct 1970 [6 Nov 1969] 51226/70 Heading B5N [Also in Divisions D1 and G3] In apparatus for bonding a woven fabric 10 to a nylon tricot lining 95, the fabric 10 is fed by a heated drum 86 for curing the bonded laminated any skew or bow distortion of the weft of the fabric 10 is corrected prior to the lamination step, see Division D1. The fabric selvages are gripped by pins 13 on tester chains 12 trained around sprockets 14, 18, the latter being mounted on independent shafts 34 so that the chains 12 may be driven at different speeds. Idler rolls 88 guide the fabric 10 over a curved roll expander 90. Adhesive is applied by rolls 92 and rolls 96 bond the lining 95, supplied from a spool 94, to the fabric 10. Idler rolls 98 guide the laminate around the drum 86.
Patent GB-1221253-A (GB)
Title: Improvements relating to internal combustion engines
Inventor: PERLEWITZ ROBERT ELLIS
IPC: F01L13/08
Filed: 1968-10-29
Abstract: 1,221,253. I.C. engines - relieving compression during starting. TECUMSEH PRODUCTS CO. Oct.29, 1968, No.51331/68. Heading F1K. An internal combustion engine is provided with an automatic compression release mechanism for reducing cranking effort at starting, the compression release comprising a chamber arranged to communicate with the combustion chamber and with a region of lower pressure, the inlet to the chamber being controlled by a one-way valve which is arranged to be closed when the chamber pressure exceeds the combustion chamber pressure, and the outlet from the chamber being controlled by a second one-way valve, the second valve being resiliently biased to an open position but being moved to a closed position in response to sudden increase of pressure consequent upon firing of fuel-air charge in the combustion chamber. The engine shown is of the two-stroke type and comprises air inlet ports 16, transfer ports 14 and exhaust ports 12. A vent passage 40 is also formed in the cylinder wall, the passage communicating with a valve chamber 34 formed by a boss 46 formed integrally with the cylinder 42 and a cover plate 48 secured to the boss 46 by screws 50, 52. A reed valve 30 is secured by screw 60 to the boss 46 and is disposed adjacent the vent passage 40 being normally unstressed and closing the passage. An outlet passage 36 is formed in the cover plate 48 and has associated therewith a reed valve 32 secured to the cover plate by screw 66, the reed valve being normally spaced from the seating so that the chamber 34 is in communication with the outlet passage 36. The passage 36 extends through the cover plate 48 and communicates at 54 with a passage 56 formed in the cylinder block, the passage 56 in turn communicating with the exhaust duct 26 which communicates with the exhaust port 12. As the piston 11 moves upwardly in the cylinder 42 as the engine is cranked at starting the pressure above the piston is relieved through the vent passage 40, fuel-air mixture passing through the passage, past the open valve 30 into the chamber 34, thence past the still-open valve 32 and passages 36, 54, 56 to the exhaust passage 26. Such flow ceases as soon as the piston passes the vent passage 40. Thus the compression pressure is relieved during engine cranking. As soon as the engine fires however the sudden increase of pressure passed into the chamber 34 causes the valve 32 to close. The valve 30 is also closed by the pressure of gases within the valve chamber 34 so no loss of gas pressure occurs when the engine is running. The valve seating associated with the reed valve 32 is a raised circular land 70, Fig. 5 (not shown), to prevent valve sticking.
Patent GB-1162235-A (GB)
Title: Improvements in or relating to Formwork for Casting Walls
IPC: E04G11/12
Filed: 1966-11-17
Abstract: 1,162,235. Wall shuttering. CELL STAL-FORMAR, A.B. 17 Nov., 1966 [23 Nov., 1965], No. 51483/66. Heading E1S.  Wall shuttering comprises metal plates 10 reinforced by U-steels 11 to which are bolted two or more strongbacks 12. The shutters are held together at the top and bottom by the tie rods 32 and wedges 34. The strongbacks 12 at one side are supported by props 14 adjustable in length by a turn-buckle 25 and connected at the bottom to a stay 27 and at the top adjustably to the strongback. A walkway 35-39 may be mounted on the upper end of the shuttering. The shutters may be connected in the longitudinal direction by a locking device (Figs. 5-7, not shown). In order to support shuttering for an upper storey, a screwed socket may be embedded in the top of the wall to support a plate 66 (not shown).
Patent GB-1213632-A (GB)
Title: Spindle assemblies for grinding wheels
Inventor: MASON PETER ALAN
IPC: B24B41/04
Filed: 1966-11-18
Abstract: 1,213,632. Hydraulic reciprocating motors. WICKMAN MACHINE TOOL SALES Ltd. Nov. 15, 1967 [Nov. 18, 1966] No. 51780/66. Heading F1A [Also in Division B3] A grinding wheel spindle assembly comprises means for admitting fluid under pressure to a hydraulic motor to drive a rotatable part of the assembly to which the grinding wheel is attached, and control means for varying the flow of fluid through the motor, said control means being responsive to changes in the diameter of the grinding wheel, the changes of flow varying the speed of rotation of the grinding wheel to maintain the peripheral speed thereof substantially constant. The rotatable part 12 is supported for rotation in hydrostatic bearings 14,15 in a housing 11 and at one end 12 carries a grinding wheel. The other end of the part has a bore 21 receiving a stationary member 30 formed with two pairs of crescent-shaped recesses 31 each pair being connected to a respective bore 32, 33. The part 12 has, aligned with the recesses 31 in member 30, radial passages 22 provided with sleeves 23 of hard material, e. g. tungsten carbide, in which are disposed pistons in the form of balls 24. The latter engages groves in eccentrically disposed rings 25, 26 located by packing rings 27, 28. The bores 32, 33 are connected to a fluid supply and exhaust and cause the balls to react against the rings 25, 26 to rotate the part 12 and the grinding wheel. The flow to the bores 32, 33 is controlled by the control means so that as the diameter of the wheel is reduced by wear or dressing, the peripheral speed remains constant. The fluid to the hydrostatic bearings may be supplied from the same source but at a lower pressure.
Patent GB-1449891-A (GB)
Title: Enzyme fixed on solid supports
IPC: C08H99/00
Filed: 1973-11-09
Abstract: 1449891 Enzymes attached to cellulose derivatives SOC NATIONALE DES PETROLES D'AQUITAINE 9 Nov 1973 [15 Nov 1972 12 Oct 1973] 52190/73 Headings C3H and C3A A process for producing a complex by fixation of an enzyme on a cellulose derivative substrate, in which the substrate is a substitution derivative of cellulose wherein the substituent or substituents consist of chlorine and/or a radical composed of sulphur and oxygen atoms and/or of an acyl chloride radical introduced by esterifying cellulose with the di-acid chloride of a dicarboxylic acid, comprises maintaining a dispersion of the derivative in an aqueous solution of the enzyme in the presence of a buffering agent at a pH not less than 5 or greater than 10 at 0 to 45 C. until the fixation has occurred. The cellulose derivative may be obtained by treating cellulose with a chlorinating agent, e.g. a phosphorus chloride, with a sulphochlorinating agent, e.g. thionyl chloride or sulphonyl chloride, or with the di-acid chloride of a dicarboxylic acid. The starting cellulose may be lignified to a lignin content of 5-25% by weight and the enzyme is preferably a hydrolase, e.g. trypsin, chymotrypsin, rennet, or #-galactosidase.
Patent GB-1468363-A (GB)
Title: Remote-control magnetic sound recording and reproduction  installation
IPC: H03G1/02
Filed: 1974-03-26
Abstract: 1468363 Remotely-controlled magnetic record/playback apparatus ELEKTROAKUSZTIKAI GYAR 26 March 1974 [26 March 1973] 52211/73 Heading G5R A plural track magnetic sound recording and playback apparatus, such as the two-channel apparatus shown in Fig. 1 in which respective track channel parts are denoted by suffixed references c or C and d or D, has an operating mode selecting circuit 2 controlled by input logic signals, a store 3, 4 for each track to store output signals of circuit 2, a sequencing circuit 5 connected to the outputs of circuits 2, 3, 4 and providing logical control signals for controlling the recording and erase function and the playback function for each track, a recording amplifier 6 having for each track a first and a second analogue signal series circuit each consisting of an amplifier, (11) or (12), Fig. 2 (not shown), and an enabling electronic switch, (9) or (10), controlled by circuit 5, with the first series circuit connected between a recording signal input C 1  or D 1  and a recording head cf or df and the second series circuit connected between a bias oscillator 7 and an erase head c t  or d t , and a playback amplifier 8 having for each track a third series circuit consisting of an amplifier (17), Fig. 3 (not shown), and an enabling electronic switch (16) controlled by circuit 5, the third series circuit being connected to a playback head c 1  or d 1 . Circuit 2 is controlled to select recording, playback, track one or two, rewind, fast forward wind and stop by inputs a 1  to f 1  from a local control unit l 1  and inputs a 2  to f 2  from a remote control unit l 2 , an input T of circuit 2 changing over between units l 1  and l 2 . The recording state for each track is indicated by respective lights, and the circuitry operates so that a recording state for the selected track can be brought about only by operating two switches in unit l 1  or l 2  in the correct order, circuit 5 monitoring the outputs of stores 3, 4, which store record command outputs of circuit 2 for respective tracks, to ensure that a recording command passes to recording amplifier 6 only when no reproducing command referring to the relevant track conflicts with this.
Patent GB-1142542-A (GB)
Title: Method and apparatus for treating particulate material in a fluidized bed
IPC: A23L7/196
Filed: 1966-11-22
Abstract: 1,142,542. Pneumatic conveyers. WISCONSIN ALUMNI RESEARCH FOUNDATION. 22 Nov., 1966 [1 Dec., 1965], No. 52302/66. Heading B8A. [Also in Divisions A2, B1 and B2] In treating particulate material the material is fed into one end of an elongated trough, divided into a central zone and two side zones by longitudinal divider plates spaced above the base of the trough, a fluidizing gas is passed upwardly through the central zone to lift the particles of the particulate material above said divider plates, a treating composition is dispersed within the trough, the treated particles are withdrawn from the other end of the trough and the rates of introduction and withdrawal of the particles and of the gas flow adjusted to cause the particles to move in a generally helical path around the divider plates. In the embodiment shown, trough 1 has a pair of side walls 2 and a base 3 and divider plates 4 to give a central zone 5 and side zones 6. The base beneath central zone 5 has a large number of small apertures 9 whilst the strips of the base beneath the side zones 6 have a much smaller number of similar apertures 10. Particulate material is fed in to the two side zones at one end of the trough from a hopper 11 via valve means 13 to control the rate of input and are withdrawn at the other end through conduit 15 with valve means 16 to control the withdrawal rate. Beneath the base 3 is a housing 17 to distribute fluidizing medium under pressure to the apertures 9, 10 from inlet valve 18 by means of which the flow can be regulated. Treating medium is contained in vats 19 and is supplied under pressure, via control valves 21, to nozzles 22a which are preferably positioned in the central zone near the feed end of the trough so that the remaining length of the trough may function as a drying zone. The base may be formed by removable separate perforated plates and they may be formed of superposed perforated plates longitudinally slidable with respect to each other so that the open area may be varied from a maximum to zero. Additional perforations may be provided along the corners between the base and the side walls to provide horizontal gas streams to prevent stagnation of particles in these corners. The treatment may consist in cooling seeds, tablets, cereals etc.; reacting particles chemically especially where the reaction requires contacting a solid in particulate form with one or two reactants in a dispersed liquid or gaseous phase.
Patent GB-1494870-A (GB)
Title: Friction false twist devices
IPC: D02G1/08
Filed: 1975-12-29
Abstract: 1494870 False twisting using overlapping discs MONSANTO CO 29 Dec 1975 [30 Dec 1974] 52954/75 Heading D1D A friction false twister comprises at least three parallel, rotatable shafts each carrying a yarn-engaging friction disc interleaved between discs on the other shafts, the disc diameters being sufficiently large that a yarn passing through the twister is deflected by successive discs, and means for rotating the shafts so that one of the shafts has a lower angular velocity than that of at least one other of the shafts. As shown, shafts 20, 22, 24 are rotated by belts 38, 48 pulley 42 being larger than pulleys 46, 44 to drive shaft 20 slower than the other shafts. Discs 34, 28 may be of steel and have only a yarn-guiding function, while the other discs and possibly disc 28 may be of polyurethane to false twist the yarn.