baber/WOPTO huggingface dataset:
Patent GB-552560-A (GB)
Title: Improved trigger mechanism for automatic firearms
IPC: F41A19/33
Filed: 1941-07-10
Abstract: 552,560. Automatic smallarms. LANCHESTER, G. H., REMINGTON, J. G., and BUCKLER, R. W. July 10, 1941, No. 8728. [Classes 92 (ii) and 119] A single-shot, automatic fire, and safety selector device for trigger mechanisms wherein the trigger 8 operates the sear 14 through a trigger-bar 10 pivoted to the trigger, comprises a vertical rotary pin B, the head 22 of which has slots 27y, 27z of different vertical depths,and notches x<SP>1</SP>, y<SP>1</SP>, z<SP>1</SP> for engagement by a spring detent 5. A stud 20 on the trigger-bar moves under the sear arm 14a when the bar is pressed forwards for sear release. When the deeper slot 27y is operative, for single-shot firing, it is entered by a lug 21 beneath the trigger-bar when the trigger is pulled. The sear is rocked to release the action-bolt 17 and it also bears down upon the stud 20 and depresses the bar and the lug 21 in the slot. This frees the sear from the bar and the sear spring 6 returns the sear to re-cockihg position. If the slot 27z is set in operative position, for automatic fire, the sear is unable to depress the lug sufficiently to free itself, and therefore remains engaged with the trigger-bar and, so long as the trigger is pulled, the gun will continuously fire. If the pin B be turned sufficiently to place an unslotted part x of the head 22 in opposition to the lug 21, the trigger-bar will be blocked and firing prevented. The fingers 31, 30 separating the detent notches x<SP>1</SP>, y<SP>1</SP>, z<SP>1</SP> are of different lengths, so that different pressures are required to move from one notch to the next. This gives a feel indication of the setting of the selector head. The device is mounted in front of the trigger guard in a block 4 of reinforced plastic material, between metal side-plates 1. The pistol-grip 2 has a metal-lined socket 32 into which a skeleton shoulder piece or stock may be fitted so that the weapon may be used as a rifle.
Patent GB-445141-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J61/067
Filed: 1935-03-21
Abstract: 445,141. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London..-(Patent-Treuhand-Ges. f³r Electrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) March 21, 1935, No. 8860. [Class 39 (i)] In a high-pressure, metal-vapour discharge lamp having at least one thermionic electrode, which is independently heated at starting but is during normal working-at least in main part-heated by the discharge, this electrode being composed of a number of portions 4, 5-directly or indirectly heated-with their heater elements in parallel as described in Specification 432,950, the elements are arranged one behind the other along the direction of the discharge. The filling may be a rare gas with sodium. The portions of one electrode are given different constitutions so that one part is at first more effective than the other; one may be smaller than the other, or a resistance 6 may be included in a heater circuit, or different emitting surfaces may be used so that the cathode falls are unequal. The portions 4, 5 consist of rods of alkaline earth surrounded by tungsten spirals. The envelope is enclosed in an outer thermally insulated tube. According to the Provisional Specification the heater circuits are disconnected after starting.
Patent GB-390322-A (GB)
Title: Improvements in and relating to insulated electric conductors
IPC: H01B7/282
Filed: 1932-03-24
Abstract: 390,322. Conductors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) March 24, 1932, No. 8879. Convention date, March 27, 1931. [Class 36.] A conductor, particularly for overhead use, is provided with an insulating and weatherproof covering of fibrous material which is saturated with a composition consisting mainly of a mixture of artificial resin and drying oils containing a suspended metal powder, preferably aluminium, in the form of flakes. Fatty acids, particularly those derived from drying oils, and natural resin may be added to the composition. A suitable composition comprises 41 parts of phthalic acid anhydride, 18 parts of glycerine, 3 parts of diethylene-glycol, 15 parts of linseed oil fatty acids, 10 parts of natural resin, and 13 parts of crude China wood oil. The ingredients are maintained at a temperature of about 200‹ C. until a resinous oil is formed, to which after cooling, the metal powder is added.
Patent GB-932184-A (GB)
Title: Improvements relating to the manufacture of quartz crystals
IPC: C03C23/00
Filed: 1960-03-14
Abstract: A method of manufacturing quartz crystals having an absorption coefficient not exceeding 0,4 in the wavelength range between 2,000 and 35,000  comprises selecting smoky quartz crystals exhibiting at a wavelength of 4,500  an absorption of from 5-40% per cm. thickness and a coefficient of absorption between 0,05 and 0,5 and subsequently thermally bleaching the crystals at a temperature which exceeds 300 DEG C.  In examples thermal bleaching is effected at 500 DEG C. for 20 hours.
Patent GB-772637-A (GB)
Title: Lantern slide projector with lantern slide magazine
IPC: G03B23/04
Filed: 1955-03-28
Abstract: 772,637. Optical-projection apparatus. ERNST, H., [trading as LIESEGANG, E.]. March 28, 1955 [April 1, 1954; Nov. 27, 1954], No. 8930/55. Class 97(1) A slide changing mechanism for an optical projector comprises an axially movable magazine and a transversely movable slider by which successive slides are moved from the magazine to the projection magazine and back again, the return movement of the slider moving the magazine forward in readiness for the feed of the next slide. In the form shown the sliding magazine is located in successive positions by notches 9 engaging a detent 10. The slider comprises a handle 2 and arms 3, 4 the latter of which pushes the slides from the magazine into the hollow member 1 containing the gate. The magazine has on its upper surface, transverse slots 6 each with a curved end portion 7. As the slider is retracted a portion, not shown, retracts the slide while a spring loaded pawl 5 engages one of the slots 6. After the slide is retracted the pawl enters the curved portion 7 to move the magazine. In a modification the handle 2 is pivoted to the slider and is coupled to the pawl to provide positive actuation thereof out of and into the slots 6 during forward and reverse movement of the slider.
Patent GB-809362-A (GB)
Title: Improvements in and relating to water aerators
IPC: E03C1/084
Filed: 1955-03-28
Abstract: 809,362. Aerating liquids. AGHNIDES, E. P. March 28, 1955, No. 8981/55. Class 14 (1). Relates to an aerator for connecting to a water-faucet and arranged to deliver an aerated coherent jet of water. According to the invention the aerator comprises a casing 8 containing a pair of diaphragms 17, 6, air inlets 14 being arranged below the diaphragm 6 and a screen 7 located below the air inlets, perforations 12 in diaphragm 17 being out of register with perforations 13 in the diaphragm 6 and the total cross-sectional area of the perforations 12 being smaller than that of the perforations 13. The diaphragm 6 is crimped between the second and third rows of perforations 13 to cause the axes of the perforations 13 to be inclined to the axes of the perforations 12 and more accurately direct the water upon the screen 7. More than one screen 7 may be provided.
Patent GB-125950-A (GB)
Title: Improvements in Clutch Mechanism for Vehicles.
IPC: F16D13/52
Filed: 1919-04-09
Abstract: 125,950. Ford & Son, H., (Assignees of Ford, H.). April 15, 1918, [Convention date]. Clutches, arrangements and applications of.- A multiple-disk clutch is enclosed in a housing which slides to-and-fro in the engine fly-wheel to engage and disengage the clutch, and the forward end 9 of the transmission shaft 8 is carried in a ball-bearing in the fly-wheel. The driving-disks engage with studs 22 formed on bolts 3 securing the fly-wheel to the engine-shaft 1, while the driven disks engage projections 17 formed on a drum 27 fixed on the transmission shaft 8. The clutch is engaged by springs 28, and is disengaged by a pedal 32 and fork 31.
Patent GB-568396-A (GB)
Title: Improvements in and relating to electric flat-irons
IPC: D06F75/24
Filed: 1943-06-05
Abstract: 568,396. Electric Irons. STERN, W. June 5, 1943, No. 9044. [Class 39 (iii)] An electric heater 1 is secured by a plate 2 to a block 3 which is movable relatively to the sole plate 4 to control the heating by means of a screwed spindle 5, bearing against the sole plate, and, provided with a knob 7 moving over a dial 8. The surface of the cover 6 may be ribbed to dissipate heat when the block is raised from the sole plate. A spring 11 may press one end of the block against the sole plate. or springs may be provided on screws 9, 91 to cause a parallel adjusting movement.
Patent GB-734491-A (GB)
Title: Improvements in or relating to launching and landing devices for aircraft and rocket or autopropelled bodies
IPC: F41F3/00
Filed: 1951-04-18
Abstract: 734,491. Launching and landing aircraft. ANDERSON, J. R. April 7, 1952 [April 18, 1951], No. 9062/51. Class 4. [Also in Group XXI] A launching or landing device for aircraft which take off and/or land vertically or substantially vertically, is provided with a member or cradle which permits freedom of angular movement of the axis of the aircraft when launching or landing. In Fig. 1, member 1 is inside the fuselage to which it is pivoted by internally projecting pivots 3. Pivots 4 attached to the member engage yokes 5 on pillars 6. Part of the latter may be. swung aside to give clearance when manoeuvring to land. In a modification the pillars consist of two pairs of telescopic legs which may be retracted into the aircraft when in flight. In Fig. 2, member 1 is outside the fuselage. In a modification, the member is a split ring, enabling the aircraft to enter laterally. In a further modification, member 1 depends from its pivots by vertical lugs and has upstanding yokes bearing pivots 4. Specifications 568,548, 612,880, 612,881 and 629,460 are referred to.
Patent GB-141040-A (GB)
Title: Radio receiving systems
IPC: H04B1/18
Filed: 1920-03-29
Abstract: 141,040. Western Electric Co., (Assignees of Arnold, H. de F.). Jan. 5, 1916, [Contion date]. Drawings to Specification. Subaqueous audible signals.-Relates to a method of eliminating the effects of disturbing impulses in wireless receiving systems. The invention depends upon the fact that a shock impulse acting upon a resonant circuit having considerable damping, sets up oscillations of a frequency different from the sustained waves to which the circuit is resonant. Waves of the desired frequency may thus be selected by tuning, and may be amplified to compensate for the loss of energy due to the decreased sharpness of tuning. The Specification as open to inspection under Sect. 91 (3) (a) states that the method may be used in submarine sound signalling to eliminate disturbing impulses caused by surface waves. This subject-matter does not appear in the Specification as accepted.
Patent GB-330970-A (GB)
Title: An improved process for the manufacture of articles from aqueous dispersions containing rubber, gutta-percha, balata and similar resins
IPC: C08J5/02
Filed: 1929-03-21
Abstract: 330,970. Dunlop Rubber Co., Ltd., Trobridge, G. W., and Murphy, E. A. March 21, 1929. Latex, treating.-In the manufacture of articles from aqueous dispersions of rubber &c. by spraying, spreading, dipping, or pouring, in which sharply-defined moulding on the side next to the former is not required, the formers are coated with a liquid film of a dehydrating and setting medium as described in Specification 803,544 before the application of the dispersion. The formers may be dipped into a hot or cold concentrated solution of a salt such as ammonium acetate, sodium chloride, ammonium chloride with or without an acid such as acetic acid, and - wiped before being brought into contact with the - dispersion. Concentrated latex such as that described in Specifications 219,635 and 290,313, may be employed. The articles may be given a wrinkled surface by the process of Specification 324,988, or may be vulcanized as usual after drying. Transparent articles are desulphurized by heating in alkali after curing.
Patent GB-814503-A (GB)
Title: Thermocouple attachment for pressure vessels, lines and the like
IPC: G01K1/14
Filed: 1957-03-21
Abstract: 814,503. Thermometers. GOULD, J. P. March 21. 1957 [June 6, 1956], No. 9283/57. Class 97(3) An attachment for inserting a thermocouple into a container comprises a tubular body adapted to be secured to the container wall, and a plug internally screw-threaded in to the tubular body with a fluid tight seal, the plug having an axial bore for the passage of the thermocouple wires, the thermocouple tube being connected to the inner end of the plug with a fluid tight seal co-acting with the exterior of the tube to prevent leakage from the container into the bore. In the form shown the tubular body 12 is welded over an aperture in the wall 13. The body has two internal diameters with a tapered seat 18 between them. The body is internally screw-threaded at 26 to receive the plug 24 having a bore 37 and a tapered portion grooved to receive a packing ring 32 engaging the tapered seat 18. The packing ring is retained by a nut 33 having a locking screw 36. An O-ring seal is provided in a groove 28, a passage 69 communicating with the space between the two seals. A coupling member 38 is secured to the threaded stem 34 at the bottom of the plug 24, being locked by the screw 42, and has an internal bore 44 opening into a tapered portion 43 which engages the flared end 47 of the thermocouple tube. A seal with the tube is provided by a resilient packing element 48 compressed by a nut 50 secured by a screw 51. The thermocouple wires pass through the bore 37, the upper end of which is enlarged to receive a tapered screw threaded plug 54 having an O-ring seal 59. The wires pass through a bore in this plug, and, as a protection against the escape of fluid in the event of breakage of the thermocouple tube, the wires are sealed by a resilient packing element 61 compressed by a screw nipple 63. Such breakage is indicated by escape of fluid from a vent 68. The outer end of the plug is hexagon shaped at 29 and undercut at 67. This provides for cooperation with a device secured to the external screw-thread 22 for removing the whole plug assembly while fluid pressure is applied.
Patent GB-828765-A (GB)
Title: Improvements in or relating to ambiguity testing devices for emitting a signal when a plurality of potential sources out of a number of potential sources, are in an operative state
IPC: H04M3/22
Filed: 1958-03-24
Abstract: 828,765. Automatic exchange systems. SIEMENS & HALSKE A.G. March 24, 1958 [March 22, 1957], No. 9441/58. Class 40 (4). [Also in Group XL(c)] An arrangement for indicating whether in respect of a plurality of voltage sources (a) whether or not at least one is operative and (b) whether or not at least two are operative, comprises two parallel chains of serially related transistors, pairs of transistors one in each chain having their bases connected to the respective sources, the transistors being so connected that when no sources are operative current flows throughout both chains, when one source is operative current can flow along part of one chain, through an interconnecting rectifier to the remaining part of the other chain, and when two or more sources are operative both chains are blocked. One such pair of chains is shown in the left-hand side of the Figure in connection with the sources Q11 . . . Q15 which are positive and negative in the operative and inoperative conditions respectively. When all the sources are in the inoperative state both chains are conductive and the potentials of both points M1, V1 are thus positive. If one source, e.g. Q12 is operative then both of its associated transistors are blocked. The right-hand chain is thus blocked upwards of the associated transistor so causing point V1 to go negative. Conduction however continues through the lower portion of the righthand chain, rectifier G12 and the upper portion of the left-hand chain so that point M1 still remains negative. If a second source is present then this latter path is also broken either above or below the rectifier by the respective non- conduction of a left-hand or a right-hand transistor so that M1 also goes negative. Where a large number of sources is involved, the sources may be divided into groups each having a separate chain. Thus as shown, a chain is provided for each of the groups Q11 ... Q15, Q21 ... Q25. The outputs from the terminals V1, V2 are combined in an OR gate, comprising rectifiers G3, G4 and resistor R3, whose output is amplified by transistor T4 to give the required indication at point Vs. Likewise the outputs of M1, M2 are combined in an OR gate comprising the paralleled transistors T1, T3 to provide an output at point Ms to indicate that two sources are operative. Since in this case it is necessary to cater for the case where one source in each group is operative, the outputs from V1 and V2 are fed to an AND gate G1, G2, R1 whose output is also fed to the OR circuit through the inclusion therein of a further transistor T2. If there are more groups, then the same principle is applied, an AND circuit like G1, G2, R1 being provided for each possible combination of two groups. The arrangement may be used to indicate incorrect operation in telecommunication switching equipment using for example marking devices.
Patent GB-537395-A (GB)
Title: Improvements in manufacturing rings from strip metal
IPC: B21D53/16
Filed: 1940-05-30
Abstract: 537,395. Making rings. BOLTON & SONS, Ltd., T., and HAYES, J. May 30, 1940, No. 9455. [Classes 83 (ii) and 83 (iv)] Angular bending.-Rings to form driving bards for projectiles &c. are made by drawing bars or strips of metal round a cylindrical surface by jaws rotating concentrically relatively to the surface. A strip 1 with bevelled ends 2 is pushed through a hole in a die 5 and drawn round the surface 6 of the die to form the ring by jaws 7 guided by pins 8 and slots and displaced outwardly by snail cam surfaces 9 on a rotating mandrel 10 until they come into gripping contact with the strip. The mandrel is detachably connected to a spindle 11 driven by bevel gear 15, 16 and spur gear 18 from a shaft 19. The spindle is automatically pushed down so as to eject the finished ring by a cam 20 against the action of a spring 12.
Patent GB-308478-A (GB)
Title: Ram and connecting rod fitting particularly for electro-hydraulic steering gears
IPC: B63H25/28
Filed: 1928-03-29
Abstract: 308,478. Brown Bros. & Co., Ltd., and Wallace, W. March 29, 1928. Pistons, attaching to rod.-A piston rod 5 is secured to a ram piston 2 by a circular concave faced abutment shoe 4 in the piston end and by a thrust collar 7 abutting against gun metal pads 8 of thrust plates 6 bolted on the piston. This construction eliminates leakage which might occur through the usual gudgeon pin bosses to the piston interior.
Patent GB-1025801-A (GB)
Title: Agricultural baler needles
IPC: A01F15/12
Filed: 1963-03-11
Abstract: 1,025,801. Baling-machines. INTERNATIONAL HARVESTER CO. March 11, 1963 [March 29, 1962], No. 9510/63. Heading B5F A baler needle of channel section has a groove of depth D which is at least five times the width of the groove, to improve retention of the tying material therein. The depth may be up to fifty times the diameter of the tying material.
Patent GB-453284-A (GB)
Title: Improvements in or relating to heat-resisting and protective helmets
IPC: A62B18/04
Filed: 1935-03-27
Abstract: 453,284. Helmets. BELL'S ASBESTOS & ENGINEERING SUPPLIES, Ltd., and BEDWELL, T. G., Bestobell Works, Slough, Buckinghamshire. March 27, 1935, Nos. 9552 and 32744. [Class 63] A heat-resisting helmet adapted for use with other protective clothing by firemen, comprises a crown portion of rigid construction and an apron or shield depending therefrom to surround the neck of the wearer, a part of the apron in front of the wearer's eyes being provided with a fire-resisting window or windows to-form a visor portion, the whole of the exposed parts being composed of fire-resisting material. The crown 1 may be of cork, papier mÔchÚ, fibre or textile material impregnated with a phenol formaldehyde. It is covered with a layer 4 of woven asbestos and is provided with a peak having a similar covering. An apron 5 of asbestos cloth depends from the crown and peak and is adapted to be tucked into other fireproof clothing of the wearer. It may have sliding clasp fastenings or lacings closing slits or pleats. The helmet may have a chin strap. The peak has a ventilation opening 2 provided with a cover 2a retained by a spring 2c in either open or closed position. Baffles 3 of metallic gauze and 3a of solid material may be provided for preventing the entry of flame. In front of the wearer's eyes the apron has double windows of mica, separated by an air space 6. In a modification, intended for use in higher temperatures, the outer covering is double throughout, the helmet having a double crown with an air space between the two, the windows carried by a double visor portion of asbestos millboard treated with silicate of soda blocked to shape and baked, and the apron having carded asbestos fibre or felt between two or more layers and retained by quilting stitches. The ventilator in the peak may have a rotating or sliding lid, or a flap of woven asbestos, or may comprise a hit-and-miss grating. The ventilator may be gas-tight when closed.
Patent GB-1495061-A (GB)
Title: Battery plate and method of making same
IPC: H01M4/68
Filed: 1975-03-07
Abstract: 1495061 Coating Al with Pb H D WALKER 7 March 1975 [11 March 1974 14 March 1974] 9612/75 Heading C7F [Also in Division H1] A battery plate is made by vapour depositing or sputtering Pb on Al. When sputtering is used the aluminium oxide layer is first removed by ion bombardment. The evaporated particles may be accelerated in an electric field.
Patent GB-1441380-A (GB)
Title: Process for the production of maleic anhydride
IPC: C07C51/56
Filed: 1975-03-07
Abstract: 1441380 Maleic anhydride from maleic acid solutions VEBA-CHEMIE AG 7 March 1975 [8 March 1974] 9648/75 Heading C2C In the preparation of maleic anhydride from benzoquinone-containing aqueous maleic anhydride solutions, by concentrating the solution by continuous dehydration by ozeotropic distillation, using a component which forms an ozeotropic mixture with water, followed by distillative separation, of the dehydrated mixture and purification of the obtained maleic acid by known methods, 0À1-2À0 wt. per cent (based on maleic acid) phthalic-acid or its anhydride is added to the aqueous solution; prior to the dehydration step.