baber/WOPTO huggingface dataset:
Patent GB-656725-A (GB)
Title: Improvements in or relating to apparatus for moulding plastic materials to elongatedshapes
IPC: B29C43/00
Filed: 1948-02-06
Abstract: 656,725. Moulding rods &c. from plastic material. POLYMER CORPORATION. Feb. 6, 1948, No. 3518. Convention date, Feb. 18, 1947. [Class 87 (ii)] Apparatus for moulding plastic materials into elongated shapes comprises an elongated tubular mould 10 mounted between two pressing members in such a fashion that during moulding the tubular mould is under tension whilst the plastic material is under pressure. The tube has an external abutment 14 surrounding its entrance, a sleeve 15 being positioned around the tube, near its entrance, for transmitting moulding pressure from one of a pair of pressure-applying members 11, 12 to the abutment 14. A tubular container 6 for the material to be moulded has opposed relatively movable walls 7, 9, one of which (9) is apertured to allow passage of material to the mould 10 and is arranged to receive pressure through the sleeve 15, the other wall 7 being arranged to receive pressure from the pressure-applying member 11. The material, e.g. nylon, is first charged into the steel container 6, the container being closed by a plug 7 made e.g. of bronze, so that, when the container is heated to melt the charge, the plug expands to form a liquidtight seal with the wall of the container. The apertured plug 9, also made of copper, and a thin diaphragm 8 are also placed in position and the container with the mould tube 10 mounted between the pressure-applying members 11, 12. A pressure of about 20,000 lbs. per sq. inch is applied, the diaphragm 8 is ruptured and molten material flows into the mould 10 driving a loose plug 17 from the top to the bottom of the mould. The edges of the aperture in the plug 9 are chamfered to prevent pieces of the diaphragm 8 from breaking off. A perforated screen may be inserted between the plug 9 and the abutment 14. The pressure is maintained during solidification of the material. To ensure directional cooling of the moulded material from the bottom towards the top of the mould, the lower end of the tube 10 may be immersed in a cooling bath and the container 6 surrounded by an electric heating ring. To extract the moulded article, the press plunger 11 is raised, a sleeve of the same diameter as the container 6 is inserted between the top pressure member 11 and the container, and the plunger 11 again brought down to force the container sleeve 6 downwardly and disengage it from the parts 7, 9, 14. In a modification (not shown) the plug 9 is omitted, the abutment 14 being made of bronze to provide the necessary liquidtight seal.
Patent GB-298939-A (GB)
Title: New synthetic resins from aromatic hydrocarbons
IPC: C08F12/16
Filed: 1928-02-06
Abstract: 298,939. Krishnamurthy, P. Oct. 17, 1927, [Convention date]. Hydrocarbon resins.-Resins are obtained by treating benzyl chloride or like aromatic chlorine derivatives with zirconium or ferric chloride. Toluene is chlorinated in presence of sunlight or a catalyst and the purified product dissolved in carbon disulphide. A small proportion of zirconium tetrachloride (prepared by heating zirconium oxide or baddeleyite in a current of chlorine saturated with carbon tetrachloride) is added and hydrochloric acid. is evolved, a reddish brown liquid being produced which is mixed with water and treated with steam to remove carbon disulphide, boiled with water and dried. The product is a yellow solid which is powdered, extracted several times with benzene or coal-tar naphtha. and the clear solution is evaporated, the residue being then heated to 260‹ C. It may be used as a substitute for shellac. Its properties may be modified by incorporating with it a condensation product obtained from the same starting material by the action of aluminium chloride: or it may be incorporated with different proportions of indiarubber, gutta-percha, or similar materials in a solvent which is afterwards removed. When ferric chloride is employed instead of zirconium chloride, the product should be carefullv freed from iron by repeated treatment with acids.
Patent GB-324815-A (GB)
Title: Improvements in disc wheels and their rims
IPC: B60B3/08
Filed: 1929-02-04
Abstract: 324,815. Dunlop Rubber Co., Ltd., Goodyear, E. F., and Wright, J. Feb. 4,1929. Disc wheels.-A wheel, especially for use on heavy aircraft, is fitted with rim-reinforcing rings 1 which are recessed to receive the edges of the rim 4 and the wheel-discs 6. In the form shown in Fig. 2, the edges 9 of the rings are lapped around the edges of the discs. As shown at the right-hand side of Fig. 3, the rim and disc may be indented at 10 to engage a circumferential groove in the ring 1.
Patent GB-607508-A (GB)
Title: Flow control valve
IPC: G05D7/01
Filed: 1946-02-06
Abstract: 607,508. Valves. GARRETT CORPORATION. Feb. 6, 1946, No. 3780. Convention date, April 2, 1945. [Class 135] A flow control valve, particularly adapted for mounting in the air inlet duct of a pressurized aircraft cabin, has a port 6 controlled by a cylindrical valve element 5 provided with apertures 29 and actuated by a gas-filled bellows 22, responsive to both the temperature and the pressure of the inflowing air, so that the effective area of the apertures 29 is increased by a rise in temperature or a drop in pressure, in order to maintain a substantially constant mass inflow of air. The setting of the bellows may be varied by a stud 23. A byepass passage 34, controlled by a manually-adjustable needle valve 33, provides adequate air inflow when extreme temperature or pressure conditions have closed the valve element.
Patent GB-647419-A (GB)
Title: Improvements in or relating to removal of fluorine from hydrocarbon materials
IPC: C07C17/00
Filed: 1948-02-10
Abstract: Hydrocarbon materials are freed from organically combined fluorine by subjecting a stream of the material containing a minor quantity of such fluorine to the action of a solid, porous metal oxide catalytically active for hydrogenation and dehydrogenation reactions, for example alumina gel, activated alumina, dehydrated bauxite, chromium oxide, and mixtures of alumina and chromium oxide. Hydrocarbons prepared by polymerization or alkylation with such catalysts as hydrofluoric acid or boron fluoride may be treated. Temperature may be atmospheric but is generally about 70-750 DEG  F., preferably 150-550 DEG  F. when space velocities of, for example, 3000 vols. of vapour per vol. per hour are possible. Superatmospheric pressures such as 5-50 p.s.i.g. are preferred but higher pressures up to say 1500 p.s.i. are of advantage when a subsequent hydrogenation is effected.  Examples illustrate the treatment in vapour phase of a debutanizer overhead, from the alkylation of a C4 fraction with an olefin in presence of hydrofluoric acid, with dehydrated bauxite, and a similar liquid phase treatment of a motor fuel made by alkylation of isobutane with isobutene in presence of hydrofluoric acid.  The Specification as open to inspection under Sect. 91 comprises also the use of metals of the iron group, especially powdered nickel on supports such as kieselguhr.  This subject-matter does not appear in the Specification as accepted.ALSO:Hydrocarbon materials are freed from organically combined fluorine by subjecting a stream of the material containing a minor quantity of such fluorine to the action of a solid, porous metal oxide catalytically active for hydrogenation and dehydrogenation reactions, for example alumina gel, activated alumina, dehydrated bauxite, chromium oxide, and mixtures of alumina and chromium oxide.  Hydrocarbons prepared by polymerization or alkylation with such catalysts as hydrofluoric acid or boron fluoride may be treated.  Temperature may be atmospheric but is generally about 70-750 DEG  F., preferably 150-550 DEG  F., when space velocities of, for example, 3000 vols. of vapour per vol. per hour are possible. Super-atmospheric pressures such as 5-50 p.s.i.g. are preferred, but may be higher.  The Specification as open to inspection under Sect. 91 comprises also the use of metals of the iron group, especially powdered nickel on supports such as kieselguhr.  This subject-matter does not appear in the Specification as accepted.
Patent GB-579865-A (GB)
Title: Improvements in combined glide and approach path systems for aircraft
IPC: G01S1/02
Filed: 1944-03-01
Abstract: 579,865. Directive wireless systems. STANDARD TELEPHONES & CABLES, Ltd., and WESTON, J. D. March 1, 1944, No. 3885. [Class 40 (v)] In a glide path indicating system in which a plurality ' of distinguishable beacon systems operate, two of which define the course in the horizontal and vertical planes, the receiver is rendered responsive to the different beacons successively and provides a course indication corresponding to each beacon system. In one particular system ground transmitters radiate two pairs of overlapping beams with dot-dash modulations, separate carriers being employed for the two pairs to permit them to be separately identified. The receiver on a craft, comprising radio frequency amplifier and mixer RFM followed by an I.F. amplifier IFA is caused to be responsive to each transmitter alternately by means of contacts r1 of a self operating relay .R, which alternately connect frequency determining circuits CH and CV to the local oscillator O. The signals from IFA are passed to a device LFD where they are demodulated and the dot-dash signals are applied to a discrimination circuit, for example of the type described in Specification 559,062 which produces currents for operating the vertical and horizontal course indicators IV, IH. Indicators IH, IV are fed through the change-over contacts r2 of relay R so that each indicator is connected while the signals from the corresponding transmitter are being received, and the oscillations of relay R are sufficiently rapid for steady reading to be obtained on both indicators. In order to prevent transients produced by the switching of oscillator O from producing false indications the contacts r2 should be adjusted to cause the indicators to be disconnected while the transients are occurring. Neon tube fault indicators NV, NH, which may be arranged as described in Specification 574,340, are also fed with signals through contacts r3 to give warning of failure of the system as a whole, and contacts r4 may adjust the differential sensitivity of device LFD in accordance with the strengths of the two sets of received waves. As an alternative to variation of the frequency of oscillator O, this frequency could be fixed mid-way between the two carrier frequencies and contacts such as r1 could switch sharply tuned input circuits to the receiver to accept one or other carrier wavelength. If switching is applied to the transmitters both pairs of beams could be transmitted on the same wavelength but the receiver switching would have to be synchronised with the ground switching. The receiver may be arranged to give more than two simultaneous indications corresponding, to additional marker beacons on different wavelengths, by providing suitable rotary distributers in place of the self operating relay and change-over contacts.
Patent GB-265990-A (GB)
IPC: H03F1/16
Filed: 1927-02-11
Abstract: 265,990. Somersalo, G. A. Feb. 11, 1926, [Convention date]. Thermionic amplifiers. -To eliminate inherent reaction in a high frequency amplifier, the ratio of the grid-filament capacity to the sum of the grid-filament and the grid-plate capacity is made equal to the ratio of the mutual inductance between coils 5, 7 to the self inductance of the coil 5. Fig. 1 shows an input circuit 4, T, connected to the grid 2 and through coil 7 and condenser 8 to the plate 1. The output inductance 5 is connected through the high tension battery to the filament 3, and a direct current path between the grid and filament is provided through a choke or resistance 13. A balance may be obtained by adjustment of condenser 10 in parallel with the grid-plate capacity, or by varying the coupling between coils 5, 7 to vary the mutual inductance. In a modification, Fig. 3, an additional coil 14 is provided so as to obtain a direct current path between the filament and grid; and in a further modification the coil 5 is replaced by a choke so. that the output is through coil 14.
Patent GB-118594-A (GB)
Title: Improvements in Tackle Blocks.
Inventor: HILGERS GERRIT
IPC: B66D3/10
Filed: 1918-06-03
Abstract: 118,594. Hilgers, G. Aug. 29, 1917, [Convention date]. Pulley-blocks for boat raising and lowering gear &c. have one or more of the sheaves 2 fitted with a ratchet 3 with which engages a spring-pressed pawl 4 operated by a release rope 7. By this means, the sheaves are prevented from rotating in the lowering direction, so that, when lowering, the rope slides over the non-rotating sheave.
Patent GB-872190-A (GB)
Title: A process for the manufacture of substituted 2,4-dioxo-tetrahydropyridines
Filed: 1960-02-04
Abstract: 2:4-Dioxo-1,2,3,4-tetrahydropyridines, substituted in the 3-position by one or two alkyl or alkenyl groups or by an alkyl and an alkenyl group, are manufactured by condensing an acetoacetamide of the general formula <FORM:0872190/IV (b)/1> (wherein R1 represents an alkyl or alkenyl group and R2 a hydrogen atom or an alkyl or alkenyl group) with an organic carboxylic ester in the presence of an alkaline condensation agent, and, where the free substituted 2,4-dioxo-1,2,3,4-tetrahydropyridine is required, neutralizing the resulting salt with an acid.  The products, some of which are new, are useful as sedatives, hypnotics or anti-convulsants.  a -Monosubstituted acetoacetamides of the general formula above (R2 = H) are prepared by treating the corresponding substituted acetoacetic esters with ammonia or by alkylating acetoacetamide.  a ,a -Disubstituted acetoacetamides of the general formula above (R2 = alkyl) are prepared by alkylating the monosubstituted compounds.
Patent GB-250184-A (GB)
Title: Improvements in mechanism for the manufacture of excentrically or segmentally grooved rollers for rolling mills
IPC: B23Q35/08
Filed: 1926-02-11
Abstract: 250,184. Becker, H, (Assignee of Becker, P.). April 1, 1925, [Convention date]. Addition to 169,955. Rollers.-The process described in the parent Specification for making eccentric rolls such as are used in the pilger-rolling of metal tubes is modified by imparting to the tool a non-uniform reciprocatory movement to produce the required eccentric form while the variably-inclined sides of the roll profile, Fig. 7, and the central arcuate portions of variable radius are produced by a combination of rectilinear and swinging movements imparted to the work. The tool-holder 1 is reciprocated by a bell-crank 2 from a cam 4 which is driven from the main shaft through change gearing 14, spur gearing 16, 36, shaft 35, and pinion 37. The bed 6 carries a longitudinal slide which supports a turntable 9 on which the adjustable work-holders 10 are mounted. The work-spindle is rotated by the chuck 30 which is driven from the gearing 14 through a differential gear 19, shaft 15, bevel gears 22, 23, 25, and shaft 27. The turntable is driven from a worm-shaft 11 connected through bevel gearing to a shaft 32 which may be driven either by ratchet gearing (not shown) or from oppositely rotating wheels 41, 42, which are selectively engaged with a shaft 40 driving the shaft 32 by means of a sliding clutch 48. In order to compensate for the rotation of the work produced by the movement of the turntable, the shaft 32 is connected to impart compensating movement to the shaft 15 through the differential gear 19. For cutting the portions 1, 2 and 3, 4 of the roll groove the spindle 8 is rotated by ratchet gearing, and the direction of rotation of the worm shaft 11 is controlled automatically by a cam drum 46 geared 1 : 1 with the work-spindle and actuating the clutch 48, this movement serving to produce the desired variable inclination of the roll sides. For producing the arcuate portions of the profile, the drive of the cam drum is disengaged and the spindle 32 is driven by its ratchet-gear to produce the progressive swinging movement of the work.
Patent GB-1000539-A (GB)
Title: Combination pulley and speed reducer
Inventor: CHUNG JACKSON
IPC: B65G23/08
Filed: 1964-01-30
Abstract: 1,000,539. Endless conveyers. DODGE MANUFACTURING CORPORATION. Jan. 30, 1964, No. 4026/64. Heading B8A. [Also in Division F2] A pulley, e.g. a driving drum for a conveyer, comprising a rim 16 welded to end discs 26, 30 and carried on a fixed shaft 18 extending axially through the pulley, is combined with a reduction gear unit 40 mounted on the shaft 18 and having a drive sleeve 60 drivingly connected to the end disc 30 by a key 116. A V-belt drive to an input pulley 52 rotates the gear unit casing 42, 44 causing a pinion or pinions 50 mounted therein to planetate about a fixed sun gear 46, keyed to the shaft 18, and about a sun gear 48 integral with the drive sleeve 60. The sun gears 46, 48 have a small difference in the number of teeth to give a large speed reduction between the casing 42, 44 and the drive sleeve 60. The gear casing rotates on bearings 56, 58, and the drive sleeve on bearings 62. The gear unit 40 is axially located on the shaft 18 by circlips 90, 94. The key 116 rests in a saddle 120 on the shaft 18 and has an arcuate outer face corresponding to a slot 114 in the flange 112 of the central opening 110 of end disc 30. The shaft 18 has transverse bores 20, 22 to enable the shaft to be fixed in supports.
Patent GB-831387-A (GB)
Title: Improvements in or relating to a method of sewing by zig-zag sewing machines
IPC: D05B29/06
Filed: 1957-02-08
Abstract: 831,387. Sewing; sewing machines. PFAFF A. G.; G. M. Feb. 8, 1957 [Feb. 17, 1956; June 20, 1956], No. 4326/57. Class 112 A method of producing parallel lines of zig-zag stitches comprises sewing a line 1 of zig-zag stitches in one direction, sewing a line 2 of straight stitches parallel to the first line and in the opposite direction, and sewing a second line 4 of zig-zag stitches in the first direction and overlying the straight stitches. For forming a buttonhole, barring stitches are added at both ends of lines 1 and 4. A presser foot adapted for use in the method is formed at its forward edge with a notch 11 for the passage of the needle 14, and in its lower surface 13 with a pair of parallel grooves 9, 10 which extend from the notch to the rear edge of the presser foot, the ridge 12 separating the grooves not extending to the surface 13 and one of the grooves being aligned with the neutral position of the transversely swingable needle. For the production of button holes in a button hole sewing machine the control cam is so constructed as to effect the above sequence of operations automatically, the barring stitches being produced at the beginning and end of the line 4 of zig-zag stitches.
Patent GB-534551-A (GB)
Title: Improvements in or relating to steam generators, hot water boilers or heaters
IPC: F24H1/44
Filed: 1940-03-08
Abstract: 534,551. Vertical steam boilers. ELDERTON, A. J. March 8, 1940, No. 4338. [Class 123 (ii)] In a boiler having a secondary combustion chamber G with vertical water tubes K between horizontal tube plates F, E, a baffle L is interposed between the inlet D from the furnace chamber B and the outlet H to the chimney, and the pitch of the water tubes adjacent the baffle is less than the pitch of the tubes opposite the baffle.
Patent GB-827088-A (GB)
Title: Improvements in or relating to rock anchor
IPC: E21D21/00
Filed: 1956-02-13
Abstract: 827,088. Mine roof supports; tunnel shuttering. WILLIAMS, C. I. Feb. 13, 1956 [Feb. 17, 1955], No. 4409/56. Class 20(2) [Also in Group XXV] An anchor-bolt used for roof bolting or holding roof support girders C, Fig. 11, in mines or temporary shuttering for casting a concrete lining in a tunnel comprises a bolt member 17, Fig. 1, supporting a cone 19 in engagement with a sleeve 22 consisting of two shell-halves which are moved outwardly to grip the bore wall, the sleeve being supported by a tube 28 as nut 30 is tightened to advance the cone into the sleeve and move the shellhalves outwardly. Two cones 19, Fig. 6, and sleeves 22<SP>1</SP>, 22<SP>11</SP> may be used on the same bolt member 42, the sleeves being either similarly or oppositely serrated, the cones being spaced apart by a tube 44. Fig. 14 shows the anchor-bolts used to secure concrete shuttering 54<SP>1</SP>, Fig. 14, wherein screwed members 57 having an internal thread at one end for the bolt member are engaged by nuts 51 abutting brackets 50<SP>1</SP> which form angled seatings for the nuts on the shuttering uprights 72.
Patent GB-850781-A (GB)
Title: Improvements in and relating to electric measuring apparatus
IPC: G08C15/08
Filed: 1957-02-08
Abstract: 850,781. Indicating measured values, temperature alarms. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Feb. 8, 1957 [Feb. 10, 1956], No. 4427/57. Classes 40 (1) and 118 (1). [Also in Group XL (c)] A cathode ray tube circuit (see Group XL (c)) is provided for displaying the values derived from a number of probes, e.g. thermocouples or temperature sensitive resistors, as a number of vertical lines of different lengths spaced across the face of the tube. As shown, the signal and sweep voltages are supplied to the tube via wipers 16, 19 of a constantly running distributer. If any signal reaches an excessive value a marginal relay 38 of adjustable sensitiveness is operated from the signal channel via amplifier 31 and locks up in series with a relay 40 operating as audible alarm. A third wiper 20 of the distributer feeds signal voltages after amplification by a further amplifier 30 to neon lamps 32 ... 34 to enable an overheated probe to be identified.
Patent GB-463506-A (GB)
Title: Improvements in electric signs, notices or the like
IPC: G09F13/28
Filed: 1936-02-14
Abstract: 463,506. Two-part couplings. LEACH, J. E. Feb. 14, 1936, No. 4463. [Class 38 (i)] [Also in Group XVIII] In signs &c. comprising two electrically conducting sheets laid one on each side of an insulating sheet and means for attaching lamps so that one terminal of each lamp contacts with one conducting sheet and the other terminal with the other conducting sheet, the attachment means comprises a screw-threaded socket 6a which is held in contact with the conducting sheet 2 by a bolt 7 insulated from the sheet 2 by a ring 9. A conducting washer 7c connects the bolt 7 electrically with the sheet 3, and the lamp terminal 8 contacts with the head 7b of the bolt 7.
Patent GB-103390-A (GB)
Title: An Improved Method of and Means for Measuring the Depths of Liquid in Open and Closed Vessels.
Inventor: CLIFT FREDERIC HOLLOCOOMBE
IPC: G01F23/00
Filed: 1916-03-27
Abstract: 103,390. Clift, F. H. March 27, 1916. Indicators actuated by floats.-The upward pressure of a float in the liquid controls the escape of air under pressure from a chamber in communication with a pressure gauge, which thus indicates the liquid level. The float spindle r, Fig. 1, is connected to a corrugated diaphragm d forming the bottom of a chamber, to which air under pressure is admitted through a pipe f. In a modification, the spindle is also connected to a diaphragm u, Fig. 2, closing the top of the liquid vessel, and to a diaphragm w forming a wall of a chamber t in communication with the upper part of the liquid vessel. The weight of the float may be balanced by a spring s, Fig. 1.
Patent GB-1032525-A (GB)
Title: Improvements in or relating to conveyors
Inventor: EDMONDS PERCY JAMES
IPC: B65G47/76
Filed: 1964-02-03
Abstract: 1,032,525. Endless belt conveyers. P. J. EDMONDS Ltd. Feb. 3, 1965 [Feb. 3, 1964], No. 4515/64. Heading B8A. A brush 14 for deflecting goods, e.g. vegetables, laterally off an endless belt 5 is rotated by means of a roller 10 which engages the belt. Gearing 8, 9 and a universal joint 12 connect the roller to the brush and a weight 11 ensures good driving engagement between the roller and the endless belt. A mounting block 1 hingedly connected to a fixed part 3 of the conveyer also ensures engagement of the roller with the belt despite upward and downward deflection of the latter, Fig. 2 (not shown). In place of the rotary brush a cylinder which is telescopic may be used.