baber/WOPTO huggingface dataset:
Patent GB-687395-A (GB)
Title: Improvements in or relating to cameras having a lens turret
IPC: G03B19/18
Filed: 1951-08-03
Abstract: 687,395. Lens turrets for cameras. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 3,1951 [Aug. 8, 1950], No. 18403/51. Class 97 (i). A camera has a lens turret comprising a number of arms for interchanging the lenses, the arms having handles provided with different grooves, ridges, knobs, or other extensions or recesses, which arms each occupy the same position when the particular lens with which each is associated is in the operative position so that the operator can determine by touch which lens is in such position. As shown in Fig. 1, a turret 2 carrying lenses 3, 4, 5, 6, is rotated by one of a number of arms 9, each having a differently-shaped handle 10. The number of arms need not be the same as the number of lenses, the absence of an arm being then characteristic of a particular position of the turret. Fig. 3 shows an arrangement in which each arm 9 is rotatable about its axis and has a pinion 14 engaging a toothed rim 15 provided on a ring 16 rotatable in the carrier and provided with teeth engaging gear-wheels 17. Each of the latter is coupled to the focusing or diaphragm adjustment of a lens, which can accordingly be adjusted by rotation of the appropriate arm.
Patent GB-279387-A (GB)
Title: An improved process for improving the heads of railway rails
IPC: C21D1/63
Filed: 1927-07-11
Abstract: 279,387. Eisenwerk-Ges. Maximilianshiitte. Oct. 21, 1926, [Convention date]. Hardening. - In a process for improving the treads of railway rails, the hot rail from the rolling operation is plunged with its head into water for such a time that the temperature of the head after removal from the water does not exceed 450‹ C. The time of immersion of the head decreases correspondingly with the increase of the carbon content in the rail. In an example a rail containing 0.4-0.45 per cent of carbon is immersed for 1“-¥ minutes.
Patent GB-1069929-A (GB)
Title: Packaging material
IPC: B32B15/08
Filed: 1965-05-03
Abstract: 1,069,929. Laminates. SCHœPBACH A.G. May 3, 1965 [May 1, 1964], No. 18467/65. Heading B5N. Packaging materials, the main sheet constituents may comprise aluminium foil alone or combined with paper or regenerated cellulose, are provided with an internal heatsealable layer containing certain materials, in the form of powders preferably smaller than the thickness of the layer, which absorb moisture, oxygen or CO 2 , the materials being manganous cobalt, iron or other hydroxides, calcium or magnesium oxide, and anhydrous copper, magnesium or sodium sulphate. The heat sealable layer may be of high or low density polythene, a polyamide, or paraffin or microcrystalline wax and may be applied by extruding or film-blowing a melt of the medium containing the powdered absorbent material.
Patent GB-129733-A (GB)
Title: Improvements in or relating to Machine Guns.
Inventor: DIBOVSKY VICTOR VLADIMIROVITCH
IPC: F41A25/12
Filed: 1917-06-05
Abstract: 129,733. Dibovsky, V. V. June 5, 1917, Machine guns. - Relates to automatic machine guns having a buffer device to cushion the return and accelerate the recoil of the barrel, and consists in employing a spring buffer BS which encircles the gun barrel GB. The invention is shown applied to a Vickers gun.
Patent GB-330774-A (GB)
Title: Improvements in or relating to operating mechanism for projection apparatus
IPC: G03B21/00
Filed: 1929-06-17
Abstract: 330,774. Fortune, R. O., and Cross, P. H. June 17, 1929. Optical-projection apparatus.-Apparatus for the step-by-step progression of a film through an optical lantern, so as to allow an interval between movements sufficiently long for the inspection of each picture, comprises a disc 29 rotated by a motor 24 and having a notch 30 which is engaged by a rod 34 forming the armature of electromagnets 31, 32. The rod 34 controls a switch 38 in the motor circuit. The magnets 31, 32 are in series with the secondary winding of a step-down transformer T, and their circuit is made at intervals by a clochcontrolled switch. Energizing of the magnets 31, 32 withdraws the rod 34 from the notch 30 and closes the switch 38 to start the motor 24 and rotate through gearing both the disc 29 and a film advancing toothed wheel 48. The rotation continues till the notch 30 comes round and allows the rod 34 to enter under the action of a spring 35. The lantern consists of a casing 10 having a screen 12 at one end, the objective 15 being adjustably held in the apex of a conical reflector 14. A frusto-conical member 22 directs light from the lamp 23 on the film 20. The device may be used for advertising, announcing, or as a station indicator on a vehicle. When employed as a station indicator, the clock is replaced by contact switches along the track.
Patent GB-1159729-A (GB)
Title: Improvements relating to Electric Rotary Switches.
Inventor: HAWORTH ROBERT
IPC: H01H19/64
Filed: 1966-04-28
Abstract: 1,159,729. Snap-action switches. SANTON Ltd. 28 April, 1967 [28 April, 1966], No. 18688/66. Heading H1N. A rotary switch includes an indexing spring 4 of which the ends 16 abut against a plurality of fixed stops or projections 14 on a detachable ring member 7 to provide the required number of switch positions per revolution of the switch handle 13. Member 7 is selected to give four or six switch positions and is positioned on two posts 10 which clamp the casing assembly 1 and end cover 11 together. The spring 4 is rotatable with the switch spindle 18 between positions but is held by a projection 14 between the ends 16 of the spring 4 until a torsion spring is stressed sufficiently to cause quick movement of the spring between its defined positions when released by a projection 21. Specification 1,159,730 is referred to.
Patent GB-863898-A (GB)
Title: Improvements in articulating devices
Inventor: PAULSEN JEAN FELIX
IPC: F16F1/38
Filed: 1958-06-11
Abstract: 863,898. Resilient mountings. LUXEMBOURGEOISE DE BREVETS ET DE PARTICIPATIONS. June 11, 1958, No. 18729/58. Class 108(3). In a rubber bush assembly a resilient rubbery mass 3, Fig. 4, is attached by vulcanising or sticking to outer and inner sleeves 1, 2. The outer sleeve 1 is then reduced in diameter to compress the mass 3. When the assembly is mounted between members 4, 5, Fig. 2, portions 9 of the mass 3 resist relative axial movement between members 4, 5.
Patent GB-946063-A (GB)
Title: Improvements in or relating to the manufacture of tungsten powder
Inventor: LEACH ANTHONY
IPC: C22B34/36
Filed: 1961-05-24
Abstract: In the production of tungsten powder by reducing the oxide which has been prepared from ammonium paratungstate, the paratungstate is purified by heating in a non-reducing atmosphere at 250 DEG  to 350 DEG  C., or in vacuum at 50 DEG  to 150 DEG  C., cooling to room temperature, dissolving in concentrated aqueous ammonia solution and after filtering, heating the solution to precipitate pure ammonium paratungstate.  The initial ammonium paratungstate may be prepared by treating Korean scheelite with hydrochloric acid to give crude tungstic oxide, which is treated with ammonia to give an ammonium tungstate solution from which ammonium paratungstate crystals are precipitated in an impure state.  The crystals may be heated from half an hour to one hour before being cooled and dissolved in a solution containing 90 to 95% ammonia, S.G. 0.880, and 5 to 10% distilled water, by volume.  The crystals, obtained after filtration and precipitation, may be re-purified by repeatedly treating in the above way, before igniting at temperatures up to 600 DEG  C., in air or in a reducing atmosphere, to produce respectively the oxide WO3 or WO2.9.  The oxide may be reduced to metallic tungsten by heating in hydrogen at 700 to 850 DEG  C.  An additive for modifying the crystalline structure of tungsten lamp filaments may be introduced into the tungsten oxide prior to its reduction.  The additive may consist of a mixture of potassium silicate and aluminium nitrate in such proportions as to give 0.57% K2O, 0.60% SiO2, and 0.036% Al2O3 per 100 gm. of tungsten.  For tungsten alloy manufacture, the tungsten oxide may be intimately mixed with a minor proportion of one or more other metallic oxides prior to the reduction step. Specifications 848,462 and 857,969 are referred to.
Patent GB-1089342-A (GB)
Title: Nuclear reactor reactivity control arrangements
Inventor: LONG EVERRETT
IPC: G21C19/32
Filed: 1964-05-07
Abstract: 1,089,342. Controlling reactors. ENGLISH ELECTRIC CO. Ltd. May 4, 1965 [May 7, 1964], No. 18738/65. Divided out of 1,089,341. Heading G6C. Control elements in channels 15 in the reactor 10 are, for purposes of movement into and out of the core, divided into eight groups, the channels of each group being extended by an assembly 36A of guide tubes 36 having their upper ends 36B disposed beneath a standpipe 37. Each group comprises sixteen channels 15 and through each of the eight standpipes 37 extends sixteen cables 41 for supporting the control elements in the several channels. Fourteen of the cables 41 are wound on a drum 39 and the other two are wound on a drum 40. The drums 39, 40 associated with each group are controlled by a winding mechanism 42, all eight mechanisms being operated by a single motor 43. The drum 40 may be moved independently of its associated drum 39 by an operating unit 70. In order to negotiate the curved tubes 36, the control elements are flexible. According to Fig. 4 (not shown) the control element comprises a number of beads (44) threaded on a cable (45), each bead consisting of a steel casing (46) containing a woven glass or ceramic neutronabsorbing insert (47). Another control element (Fig. 5, not shown) comprises a number of cylindrical portions (50) joined together by links (51) suspended from a cable. Each portion (50) comprises a steel container (52) enclosing a neutron-absorbing sleeve (53) of woven ceramic fibre. Another control element (Fig. 6, not shown) consists of a number of cylindrical portions (60) suspended from a cable, each portion comprising inner and outer steel sleeves (61, 62) and an intermediate sleeve (63) of copper containing boron carbide. The portions (60) are coupled together by dumbbell members (65, 66) pivoted by a pin (67).
Patent GB-511224-A (GB)
Title: Improvements in or relating to the automatic control of thickness of strip in rolling mills
IPC: B21B37/16
Filed: 1938-06-24
Abstract: 511,224. Fluid-pressure servomotor systems. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. June 24, 1938, No. 18780. Convention date, July 1, 1937. [Class 135] [Also in Groups XXXV and XXII] A strip rolling mill comprises means tensioning the strip as it passes through the mill and an element responsive to variations in the tension to control the same, the setting of the element being automatically altered with variations in strip thickness so that the said thickness may be kept constant. A roller 13 on a lever 14 carrying a counterweight 17 engages the strip 10, which is tensioned by an electric motor 20 driving rolls 12. The field strength of this motor may be varied by relays 59, 60 if the strip path changes, owing to one or other of two contacts on the lever 14 periodically engaging a contact 52; the strip tension, which influences the thickness of the product, is thus kept constant. A relay 54 is coupled to the contact 52 to cause it to vibrate. To change the setting of this control device in accordance with changes an strip-thickness a reversible motor 18 may oe adapted to adjust the position of the counterweight 17. This motor is controlled by a reversing relay 49, the average excitation of which is dependent on the operation of relays controlled by a vibratory contact device 30 having a magnet connected across a wheatstone bridge which includes in one arm the resistance between contact rollers 27, 28 embracing the strip and dependent on strip thickness. In a modification a fluid-pressure piston is connected to the lever 14 and the pressure admitted is adjusted by a valve operated by a solenoid energized in a manner similar to the relay 49. In a further modification the roller 13 is supported by a piston supplied with pressure-fluid through a valve the position of which is determined by an electromagnet energized as before; the piston rod is coupled to the contacts of the vibratory regulator for the motor 20 and to a rheostat in series with the said electromagnet. The rollers 27, 28 may be placed in front of the reducing rolls 11 or in either of the positions illustrated as desired.
Patent GB-720279-A (GB)
Title: Improvements in or relating to circuits for operating electric discharge lamps
IPC: H05B41/39
Filed: 1951-08-09
Abstract: 720,279. Supply systems for space-discharge apparatus. GENERAL ELECTRIC CO., Ltd., and CATES, J. Oct. 31, 1952 [Aug. 9, 1951], No. 18797/51. Class 38 (4). Dimming of one or more electric-discharge lamps 1 is effected by a circuit arrangement supplied with A.C. at variable frequency and including a frequency-dependent ballast impedance comprising effectively a capacity C1 and an inductance L in series with each other and with the lamps and a reactor, in the embodiment shown a capacitor C2, in parallel with one or both the capacity and inductance, the one being of opposite sign to the reactor, the arrangement being such that the lamp is dim at the supply frequency at which the ballast impedance is parallel-resonant, and operates at high brightness, in series with the ballast impedance which is then effectively of opposite sign from the reactor, at supply frequencies which are either more or less than the resonant frequency depending upon whether the reactor is inductive or capacitive respectively. In the inductive ballast impedance shown in Fig. 3, the inductance L may be split into two parts with the capacitor C1 interposed, and complementary circuits are described for capacitive ballast impedances. The addition of capacitor C1 or inductor L permits an increase in the ballast inductance value relative to that of the shunting reactor, thereby decreasing the resonant circuit current and hence the minimum lamp current, which latter may be further decreased by the provision of a seriesconnected capacitor 12 and resistor 13 to shunt the lamp 1. Dimming may additionally be effected by conventional variation of voltage amplitude. The arrangement is applicable to cold-cathode as well as to the hot-cathode lamp shown, and a plurality of lamps may be series or parallel connected, having a common or separate ballast impedances respectively. Power-factor correction is effected in a capacitive circuit by a transductor, and in an inductive circuit by a transductor in series with a condenser, the current in the transductor control windings being arranged to vary with variations of supply frequency.
Patent GB-337134-A (GB)
Title: Improvements in submarine cable signalling systems
IPC: H04B3/30
Filed: 1929-06-19
Abstract: 337,134. Standard Telephones & Cables, Ltd., and Blumlein, A. D. June 19, 1929. Eliminating effects of disturbing currents; artificial lines.-In sea-earth cables, means are provided for attenuating the disturbances in the " earth circuit," due to dissimilarity between the two legs of the circuit, without attenuating the signals. The earth circuit comprises the earth-capacity C2, C1, of the main and sea-earth cores MC1, MC2, in series with the earth and with the two cores in parallel. Disturbances travelling round this circuit affect the instrument T on account of reflection at the earth connection E. To prevent this effect, coils L1, L2, Fig. 1, are so wound as to have zero inductance for signal currents but an effective inductance for currents in the earth circuit. These inductances co-operate with the natural capacities of the main and sea-earth cables to form a low-pass filter whch attenuates currents of signal frequency in the earth circuit. A single pair of linkes coils may be used (Fig. 3, not shown) to ensure that disturbances in the earth circuit shall not pass from the loaded to the unloaded section of the cable. Different sections of the filter thus constructed may be differently dimensioned. The inductances near the sea-earth may have laminated permalloy cores, while those near the shore may have cores of permalloy dust. The earth-capacities of the main and sea-earth cores may be increased, to give the filter the required dimensions, by the addition of an earthed condenser C, Fig. 4, tapped off branch comprising inductances h, l1<SP>1>. Further condensers C1, C1<SP>1>, are added if d.c. signalling is to be provided for. The condenser C may be connected in series with an inductance or replaced by an impedance network designed to attenuate some frequencies more than others. In another arrangement a layer of magnetic material is wound over the two cores together and either insulated from the sea or covered with jute.
Patent GB-357243-A (GB)
Title: A distributing device for powdered substances
IPC: A47G19/24
Filed: 1930-06-20
Abstract: 357,243. Powder distributers with valved stoppers.. SIEGEL, I., 21, Taborstrasse, Vienna. June 20, 1930, No. 18847. Convention date, June 20, 1929. [Classes 18 and 125 (iii).] A powder distributer with lateral perforations 6, Fig. 2, adapted to be covered by a cap 5 screwed on to the distributer, is provided below the perforations with a ring-shaped shoulder 3 against which the lower rim of the cap presses to form a tight joint. The distributer is screwed, or otherwise attached to, or formed in one with a container for salt, sugar, soap, &c., and the cap may be manipulated with one hand if it is provided with a knob 8, Fig. 4, and the threading on the portion 4<1> is made steep. The distributer top may also be made solid with the perforations 6<1> running obliquely through it. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification wherein the cap engages with the distributer by means of a bayonet joint, and a form, Fig. 5 (Cancelled), wherein the lateral perforations are formed in the cap which can slide and rotate on to the container. This subject-matter does not appear in the Specification as accepted.
Patent GB-943849-A (GB)
Title: Shoe manufacturing line
IPC: F26B20/00
Filed: 1961-05-25
Abstract: 943,849. Shoe manufacture. SVIT, NARODNI PODNIK. May 25, 1961 [May 28, 28, 1960], No. 18862/61. Heading A3B. [Also in Division H5H] A manufacturing line for shoe manufacture comprises a chain conveyer system having an upper horizontal portion I, a lower horizontal portion II and a section III extending from the upper horizontal portion I in a vertical direction and stations for driving IV and tensioning V the chain conveyer. Two veltilating channels 31, 32 are provided below the upper horizontal portion I of the conveyer, one above the other, the lower one of which 32 having infra-red radiations 33 end electric heat radiating elements 34. The conveyer is composed of plate shaped components 20 linked together by bolts 19 passing across the full width of the said components. Each component carries an abutment 22 which supports an element 23 for clamping a last 30 in position on the component. The chain conveyer moves on rollers 21 which are freely rotatable about the bolts 19 over rails 3, 4 in the frame 1. The chain conveyer passes over five pairs of sprocket wheels 6, 7, 9, 10, 13, 14, 15, 16, 17 and 18, being the driving sprocket wheels, conveyer tensioning sprocket wheels, and sprocket wheels determining the path of the vertical motion respectively, the circumferential indentations of which engage the ends of the bolts 19. The driving system 50 comprises a motor 56 acting through a clutch and a rotating drum on the sprocket wheels 6, 7 the system being geared for intermittent movement in the direction of the arrows in Fig. 1, the distance of one movement being equivalent to the length of one of the component plates 20, the rotating drum also affecting through a number of gears, the operation of machines at different stations a &c. along the chain conveyer. The tensioning system comprises the two sprocket wheels 9, 10 mounted on a shaft 8 in a bearing 11 which slides between the members 60 under the action of a spring. Air circulation is effected by partitioning the vertical conveyer part within the casing 27 by two walls, providing channels 35, 28, 29 and these together with the additional wall 41<SP>1</SP> and exit channels 44 and 41 with adjustable flap openings between the channels 31 and 32 allow air to circulate in the direction of the arrows u in Fig. 1. The circulation is forced by the ventilator 40, used air passing out of the system through the channel 35 and outlet 48 and a new supply being taken into the system through the openings 0, 0<SP>1</SP>. A series of infra-red heaters 38, and heating elements 39, are mounted in the vertical channel to react upon work placed centrally on the conveyer chain components, the heaters 38, 39 drying a layer of adhesive automatically painted on the lasting margin of the upper in an initial operation. A second ventilator 45 draws air through the passages 47 over the warm lasted assembly to cool it. The upper and insole assembly are initially slip lasted on to the last 30, the processes of heating stabilizing the shape of the aforementioned upper and insole assembly.
Patent GB-311974-A (GB)
Title: Improvements in or relating to pressure gauges
IPC: G01L19/00
Filed: 1928-06-29
Abstract: 311,974. Napier, G. A. June 29, 1928. Elastic - diaphragm pressure gauges, mounting-details for.- A pressure gauge of the diaphragm type has a valve for cutting off the supply of the pressure element when a predetermined pressure is reached in order to prevent derangement of the gauge. The pressure element passes through an orifice 18 in a screwed plug 17 and passes between a valve 11 and its seating 15 and enters the longitudinal bore of a diaphragm support 6 to elevate the upper half 10 of the diaphragm box 5. A rod 8 carrying the valve is automatically elevated to the same extent and if the pressure be sufficient the valve engages with its seating and passage of further pressure element is prevented. The pressure at which this occurs can be altered by adjusting the position of the valve on the rod by means of a nut 12.
Patent GB-439367-A (GB)
Title: Improvements relating to floating covers for storage tanks for liquids
IPC: B65D88/42
Filed: 1934-06-26
Abstract: 439,367. Tanks. LENTSCHEWSKY, B., 55, Leibnizstrasse, Charlottenberg, Berlin. June 26, 1934, No. 18884. [Class 69 (i)] Sealing means for the floating covers of liquid storage tanks are constituted by brushes including long tufts 5<a>, Fig. 1, and shorter supporting tufts 5b above and below the long tufts. The brush head may be secured by the bent edges of a metal strip 6 permanently secured to the cover 1. In another form, the shorter tufts are obliquely arranged as shown in Fig. 2, and the brush heads are secured directly to the cover.
Patent GB-385545-A (GB)
Title: Improvements in photographic emulsions
IPC: G05D16/10
Filed: 1932-07-04
Abstract: 385,545. Photographic emulsions. 1. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on- Main, Germany. July 4, 1932, No. 18887. Convention date, July 4, 1931. [Class 98 (ii).] Hypersensitive photographic emulsions are prepared by adding to a silver halide emulsion at any stage in its preparation, a solution of a silver salt of an acid, the anion of which contains a heavy metal. Examples are given of the addition of silver tungstate or molybdate to a panchromatic or orthochromatic emulsion. either by mixing a solution of the salt with the melted emulsion or by bathing the emulsion in a solution of the salt.