baber/WOPTO huggingface dataset:
Patent GB-1462814-A (GB)
Title: Comparator circuit for use with photometric apparatus
IPC: G01J1/42
Filed: 1974-04-16
Abstract: 1462814 Compensating a comparator COULTER ELECTRONICS Inc 16 April 1974 [16 April 1973] 16645/74 Heading G1A In an arrangement for compensating for the inadequate high frequency response of a comparator 14 which results in a delay on its output, the delay effect is mitigated by a compensating circuit 18, comprising a capacitor 42 and resistors 44 and 46 connected, as shown, to one input 30 of the comparator 14, the other input 28 being connected to a photo-responsive device 12.  The apparatus is intended to be used for measuring the concentration of a substance in a liquid. The voltage output of the photo-responsive device 12 due to radiation received after passing through a clear solution of liquid is taken as the reference voltage. Such a reference voltage is applied via a switch 32 to a voltage storing circuit 16 and charges the capacitor 24. During measurement of an unknown liquid switch 32 is opened and a further switch 34 is closed and a logic output signal 1 is provided by the comparator 14, while the capacitor 42 discharges, until the voltage to input terminals 28 and 30 are equal, the duration of the pulse thereby providing information about the liquid concentration. The presence of the resistance 46 compensates for a delay introduced by the comparator 14 by providing an effective delay, Fig. 2 (not shown) to the capacitors exponential output and thereby compensates the output signal of the comparator 14. When the logic signal output from comparator 14 is no longer "1" a control circuit 20 senses this and closes switch 32 and opens switch 34. This enables the capacitor 36 to be recharged for the next measurement.
Patent GB-165045-A (GB)
Title: Improvements in automatic rifles and machine guns
IPC: F41A3/44
Filed: 1921-06-17
Abstract: 165,045. Silva, L. Martinez-. June 17, 1920, [Convention date]. No Patent granted (Sealing fee not paid). Machine guns.-Consists in a gas-operated gun having a longitudinally sliding breech-block and a vertically sliding forked locking-bolt positively actuated in both directions by a threearmed lever actuated by the piston-rod. The locking-bolt has bevels at the top which, during the locking movement, engage the breech-block and force it forwards into the completely closed position. In the construction shown, the breechblock 23 is locked by a vertical bolt 11 engaging lateral lugs 31 on the breech-block. The bolt 11 is operated by an arm 6 of a three-armed lever 1, the unlocking of which is effected by an incline 9 on the piston 8, 14 engaging the arm 5 and the locking rotation by a shoulder 13 on the piston engaging an arm 4. The piston 8 is connected to the breech-block in a manner allowing of limited relative movement by a rod 17, 17<a> fixed at the front to the piston, passing with a sliding fit through a lug 22 on the breech-block, and terminating in a head 20. A spring surrounding the front reduced portion 17 of the rod bears at the rear against a collar 19 adapted after a short rearward movement of the piston to bear against the lug 22. A lever 25 pivoted to the breech-block has a lug 27 adapted when the breech is open, to be interposed between the head 20 and the lug 22 as shown in Fig. 4. The lever is actuated by a cam groove 28, 29 on the breech casing. Just before the completion of the forward movement of the piston, the lever is depressed. The piston then moves forwards independently of the breechblock to effect the locking movement of the lever 1 and bolt 11. Bevels 32 at the top of the bolt engage the lugs 31 of the breech-block and force the block into its completely closed position. In a modification, instead of the lever 25 being fitted the head 20 has forwardly extending tenons engaging corresponding recesses in the lug 22, and the rod 17<a> is rotated slightly when the breech is opened to move the tenons and recesses out of register. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also a modification in which a spring is interposed between the head 20 and the lug 22, this spring yielding to admit of the independent locking movement of the piston. This subject matter does not appear in the Specification as accepted.
Patent GB-1396498-A (GB)
Title: Process for the production of a zinc salt of 2-mercaphto benzothiazole of 2-mercaptobenzimidazole
IPC: C07F3/00
Filed: 1974-04-17
Abstract: 1396498 Zinc salts of mercaptoheterocyclic compounds BAYER AG 17 April 1974 [18 April 1973] 16727/74 Heading C2C The zinc salt of 2-mercaptobenzothiazole or 2-mercaptobenzimidazole is prepared by reacting 2-mercaptobenzothiazole or 2-mercaptobenzimidazole with an equivalent quantity of zinc oxide and/or zinc hydroxide in an inert organic solvent in the presence of a catalytic quantity of an acid. Suitable acids are, for example, formic acid, acetic acid, propionic acid, chlorbenzoic acid, oxalic acid or p-toluene sulphonic acid.
Patent GB-825923-A (GB)
Title: Dispersion separation
IPC: B01J19/00
Filed: 1944-09-01
Abstract: 825,923. Filters. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Sept. 1, 1944 [Sept. 29, 1943], No. 16745/44. Class 46. A dispersion of one liquid or solution in another liquid or solution in a vessel 10, Fig. 1, is maintained in turbulent flow adjacent a porous member 18 by a propeller 30 and may also be continuously circulated through the vessel by valved inlet and outlet 12 and 14 respectively. One phase of the dispersion is withdrawn through the member 18 by a suction pump 22 into a container 16 and is subsequently discharged into a receptacle 24. In Fig. 2, the suction pump 22 is dispensed with and pressure is applied by compressed air through a constant pressure valve 74. A throttle valve 72 and manometer 76 are also provided. The porous member 56 in this ease communicates with a funnel 58 and a receptacle 60. In Fig. 3, not shown, the apparatus is as in Fig. 1 except that the suction pump is dispensed with and there is added the compressed air device of Fig. 2. The porous member may be of porcelain, fritted glass, or a metal alloy, and the pores are preferably between 10 and 200 microns in diameter. The pressure differential across the porous member is preferably between 0À1 and 25 lbs. per sq. inch. Dispersions consisting of water and one of the following compounds were treated : ethyl ether, isopropyl ether, isobutyl alcohol, p-cymene, nitro benzene, ethyl acetate, lubricating oil, n-heptane ; and dispersions of: water with a commercial wetting agent and ethyl ether ; water with a dissolved organic salt and ethyl ether ; water with a dissolved organic salt and ethyl acetate ; water, ethyl ether and acetic acid; methyl cyclohexane, n-heptane and aniline ; furfural and n-heptane ; aniline and heptane. Where the dispersions incorporate water it is the aqueous phase which passes through the porous member.
Patent GB-1480061-A (GB)
Title: Joints between two metallic pipe members
IPC: B23K9/028
Filed: 1973-04-06
Abstract: 1480061 Pipe joints ENGLISH CLAYS LOVERING POCHIN & CO Ltd 4 July 1974 [6 April 1973 15 June 1973 22 March 1974] 16747/73 28679/73 and 12988/74 Heading F2G [Also in Division B3] In an externally welded joint between two metal pipes 1, wherein each pipe has an internal lining 2 of a corrosion and/or abrasion preventing heat-degradable material, a material (the word is used to include gases) is provided between each pipe and its lining at the weld edge to protect the inner surface of said lining from welding heat. The pipe metal may be steels, aluminium, aluminium alloys. The lining material may be glass, natural or synthetic rubbers, or plastics such as polyamides, e.g. nylons, polyolefins, e.g. polyethylenes, polypropylenes, and polyurethanes. Said inter pipe/lining space may include gas (e.g. air, argon, nitrogen) carbon dioxide, steel, fibre glass, asbestos, ceramics, glass ceramics, rock wool. In Fig. 1 (not shown) both of steel pipe ends are flared to accommodate thickened ends of polyurethane lining, and an air gap is provided between the pipe ends and the thickened lining ends. The joint 5 between the lining ends may be sealed by adhesive. In Fig. 2 (not shown), fibre glass is inserted in said air gap. In Fig. 3 (not shown), the pipe ends are not flared and the lining ends are recessed to accommodate inter pipe/lining fibre glass; whereas in Fig. 4 (not shown) the fibre glass is accommodated in pipe end swaged out enlargements. As shown in Figs. 5, 6 initially a former 13 is inserted in each flared pipe end 3 and polyurethane lining 2 is spun into each pipe, the formers providing thick end linings and recesses. A steel heat-shielding collar 15 is then placed around the thick end lining of one pipe and the thick end lining of the other pipe is inserted into the collar. The two pipes are clamped and aligned together by a conventional compressive coupling device (not shown). The linings are about 1/16 inch proud of the pipe ends, and the collar 15 is dimensioned such that when the linings are sealingly compressed against each other, the collar engages the pipes, an air space 16 is provided, and the pipe ends abut. The pipe end weld preparations provide for engaging root portions and 70 degree weld preparation Vee. In Figs. 7, 8 (not shown), the collar is in two parts welded to the inner surface of the pipe flared ends, and the gap around the collars is packed with ceramic wool insulating material. As shown in Fig. 11, each heatshielding collar 18 has an internal dovetail groove in which the lining 2 keys, and a mould plate 19, positioned before spin lining, provides for lining projection C which shrinks after curing to produce a normal lining end face. The inter pipe/collar space may contain gas, e.g. air, or heat insulating material. The pipe end weld preparations may be ground.
Patent GB-612774-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H04Q1/36
Filed: 1946-06-03
Abstract: 612,774. Electromagnetic relays. STANDARD TELEPHONES & CABLES, Ltd., and CHILDS, P. A. June 3, 1946, No. 16766. [Class 38 (v)] A relay specially adapted for repeating impulses and with adjustable time-lag for both operation and release, has an operating winding IW and a control winding CW, the control winding being provided with alternative shunt circuits each containing a variable resistance and one being operative during " operation " of the relay and the other during " release." In the form shown, the two variable resistances AB and BC are constituted by a potentiometer connected up to two rectifiers R1, R2 as shown. During " operation " of the relay, an induced secondary current flows from CW through BC and R2 and during '' release " through BA and R1. In a modification, the rectifiers R1, R2 are replaced by relay-operated contacts which effect the necessary connections.
Patent GB-546142-A (GB)
Title: Improvements in or relating to hoisting gear and the like
IPC: B66D1/48
Filed: 1940-11-26
Abstract: 546,142. Winches. CLARKE, R. C. Nov. 26, 1940, No. 16942. [Class 78 (v)] In hoisting gear &c. in which a spring connection is introduced between the drum and the driving shaft to allow of attachment of the cable to, say, a water-borne load and the prevention of sudden excess strain on the cable due to wave motion, a reduction gear is inserted between the drum 1 and the springs 16, 19 and a slipping clutch 11, 12 is provided to allow further relief when the springs are fully extended. Fig. 1 shows a form in which the drum 1 is unitary with a gear casing 1a, a pinion 5 fixed to the power shaft 4 meshing with duplicate gears 6, 9 carried by a cage 8 pinned on the shaft 4. The pinions 9 mesh with a loose pinion 10 carrying radial arms 14 to the extremities of which, the springs 16, 19 are attached. The other ends of the springs take over the shafts 7 of the pinions 6, 9. To prevent the central parts of the springs fouling the shaft 4 when fully extended, they are built up of two or more parts connected by pins 17 which ride in segmental straight or curved grooves, in the cage side 8b and in a partition 18. The cable may have a pilot extension which is first attached to the load, and before the springs 16, 19 are fully extended and the clutch 11, 12 begins to slip the main hook can be coupled up and a direct drive imparted from the shaft 4 to the drum 1 by way of a ratchet clutch 21, 23, the pivoted teeth 22 of which carry rear rollers 22a on which bears a slidable make-and-break disc 24 controlled by an embracing girdle 25. The gear casing may be separate from the drum, or may be located within it. Epicyclic gear may be used, and the planet wheels may be carried by the disc of the slipping clutch 11, 12. Fig. 10 shows in end view another modification in which two batteries of parallel enclosed springs 52 are provided. In this form the spring casing 50 is made a separate entity from the drum and gear casing, and the gear provided is epicyclic. The casing 50 is oil-tight for cooling and lubricating.
Patent GB-909057-A (GB)
Title: A contact arrangement for electric switchgear
IPC: H01H1/22
Filed: 1961-05-10
Abstract: 909,057. Contact-members for switches; arc rupturing in switches. LICENTIA PATENTVERWALTUNGS-G.m.b.H. May 10, 1961 [May 13, 1960], No. 17017/61. Class 38 (5). In a contact arrangement in which flat fixed and moving contacts engage in an edge-to-edge manner, the fixed contact has an incision 2 forming a U-shaped current loop and an arcing horn 16. The fixed contact 1 is formed from a flat strip (Fig. 1) which is shaped (3, 4) to receive a piece of contact material and is bent to form a terminal end 7 which receives a terminal screw 11. A projection 5 on the contact 1 engages a projection 10 on an insulating housing 6 which also has a slotted projection 9 to locate the strip. The moving contact may be reinforced by " upsetting " at 15 and arc-quenching plates 14 are provided.
Patent GB-1344932-A (GB)
Title: Vehicle chassis frame
IPC: B62D27/04
Filed: 1971-05-26
Abstract: 1344932 Yielding joints between frame parts CHRYSLER FRANCE 26 May 1971 [29 July 1970] 17212/71 Heading B7D  A cross-member 12 of a vehicle chassis is inserted at both ends in damping members 24 of cup like elements 19 which are secured, such as by welding, to the chassis side members 10. The elements 19 and complementary damping members 24, such as rubber blocks, have an open side facing the vehicle rear to enable insertion by sliding of the cross-member 12. A wheel 13 is secured to an oscillating arm 14 locked on a torsion bar 15 whose other end 16 is solid with a lever 17 which transmits the suspension forces to the cross-member 12 through the medium of a bolt 18.
Patent GB-102615-A (GB)
Title: Improvements in Undergarments.
IPC: A41B9/14
Filed: 1916-11-30
Abstract: 102,615. B.V.D. Co., (Assignees of Heyn, E. C.). Dec. 7, 1915, [Convention date]. Combinations and body undergarments are provided with an elastic insert 11 in each shoulder part. The insert is made by folding a strip of material so that the edges abut approximately on the median line of the shoulder strap. The edges are then sewn to form a seam 12 of less elasticity than the body of the insert.
Patent GB-660948-A (GB)
Title: Improvements in rotary sieves
IPC: B07B1/18
Filed: 1949-06-29
Abstract: 660,948. Rotary sieves. EDIS, J. W., and MARSTON VALLEY BRICK CO., Ltd. April 27, 1950 [June 29, 1949], No. 17264/49. Class 117 In a rotary drum sieve for screening ground clay or the like, clogging is prevented by one or more metal combs 4 the fingers 5 of which bear on the drum periphery so that on rotation of the drum the ends 4a of the comb fingers flick into the interstices of the sieve. As shown the combs 4 are formed from sections of wire mesh of the same gauge as the sieve drum, the transverse wires serving to strengthen the fingers 5, and are clamped along one side edge upon a wooden bearer 6 which is adjustably bolted to brackets 7. The brackets 7 vertically adjustably clamped to the inside wall of the fines receiving shoot so that the ends 4a of the combs 4 bear on the drum periphery at a point above the highest position reached by the material in the drum during rotation. In alternative arrangements the combs 4 may press on the drum under their own weight or with the aid of springs.
Patent GB-529957-A (GB)
Title: Improvements in and relating to dry rectifiers
IPC: H01L21/145
Filed: 1939-06-13
Abstract: 529,957. Asymmetrically - conducting resistances. BRITISH THOMSON-HOUSTON CO., Ltd. June 13, 1939, No. 17298. Convention date, June 14, 1938. Drawings to Specification. [Class 37] The counter-electrode of a selenium dry rectifier is applied by vaporization in a high vacuum or by cathode sputtering, and the entire rectifier is then tempered at a temperature of about 150C. Aluminium, antimony, nickel or bismuth are preferably employed.
Patent GB-624550-A (GB)
Title: A process for the manufacture of organo-silicon compounds
IPC: C08G77/00
Filed: 1947-07-01
Abstract: Organo-silicon polymers containing units -CH2.SiRR1- are obtained by reacting in the liquid phase a compound of the type XCH2.SiRR1Y (where X is a halogen, Y is a halogen or an alkoxy radical and R and R1, which may be the same or different, are phenyl or alkyl radicals) with an alkali metal or alkali metal amide.  Preferably, the halogen is chlorine or bromine and the alkoxy ethoxy.  The alkali metal may be solid, e.g. in cut pieces, or liquid, e.g. suspended, at a temperature above its melting point, in a liquid hydrocarbon. Sodium, sodium-potassium eutectic and sodium amide are specified. The oily products may be used as lubricant or as hydraulic, damping, water-proofing and electric insulating fluids.  In examples: (1) sodium was added to refluxing dimethyl (chloromethyl) ethoxy silane; (2) sodium was added to refluxing dimethyl (chloromethyl) chlorsilane; a siloxane was prepared from the product by hydrolysis-condensation with alcoholic caustic potash; (3) sodium was added to dimethyl (chloromethyl) chlorsilane in xylene; (4) dimethyl chloromethyl chlorsilane; (5) methyl phenyl chloromethyl chlorsilane; or (6) methyl butyl chloromethyl chlorsilane was added to liquid sodium suspended in toluene.ALSO:Organo-silicon polymers containing units -CH2.SiRR1- are obtained by reacting in the liquid phase a compound of the type XCH2.SiRR1Y (where X is a halogen, Y is a halogen or an alkoxy radical, and R and R1, which may be the same or different, are phenyl or alkyl radicals) with an alkali metal or alkali metal amide.  Preferably, the halogen is chlorine or bromine and the alkoxy ethoxy.  The alkali metal may be solid, e.g. in cut pieces, or liquid, e.g. suspended, at a temperature above its melting point, in a hydrocarbon. Sodium, sodium-potassium eutectic, and sodium amide are specified. The oily products may be used as lubricants or as hydraulic, damping, water-proofing and electric insulating fluids.  In examples: (1) sodium was added to refluxing dimethyl chloromethyl ethoxysilane; (2) sodium was added to dimethyl chloromethyl chlorsilane; a siloxane was prepared from the product by hydrolysis-condensation with alcoholic caustic potash; (3) sodium was added to dimethyl chloromethyl chlorsilane in xylene; (4) dimethyl chloromethyl chlorsilane; (5) methyl phenyl chloromethyl chlorsilane; or (6) methyl butyl chloromethyl chlorsilane was added to liquid sodium suspended in toluene.  Dimethyl chloromethyl chlorsilane is prepared by direct chlorination of trimethyl chlorsilane and the equivalent ester by reacting the product with an alcohol. Alternatively, methyl trichlorsilane may be chlorinated to give chloromethyl trichlorsilane and this reacted with a methyl, ethyl, octadecyl, phenyl or other Grignard reagent.
Patent GB-224263-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M9/12
Filed: 1923-07-04
Abstract: 224,263. Baechler, H. July 4, 1923. Spray carburettors.- A fuel pipe 4 is surrounded by an air jacket 6, is enlarged at its upper end 4<b> and at its lower end is provided with a nozzle 5 of smaller bore controlled bv a blade-shaped needle valve 15 actuated simultaneously with the throttle valve 26, 27. The jacket 6 has inlet orifices 7 at its base and may be used for the supply of acetylene, oxygen, compressed air or a gas-air mixture to promote combustion or atomizationof the fuel. The upper end of the fuel pipe is coned exteriorly at 4<a> and the upper end of the jacket is also coned to produce with the part 4<a> an annular conical passage. An additional liquid such as water may be supplied continuously to the bottom of the jacket pipe through a nipple 35 and duct 34, Fig. 3. Between the jacket 6 and the fuel pipe 4 may be fitted a correcting jacket 8 provided with apertures 9 near its upper closed end; in which case the bore of the fuel pipe and the interior of the jacket communicate through apertures 10. The shank 14 of the needle valve 15 has a coarse pitch thread 16 engaging a nut 17 pivoted in a member 19 hinged to a bracket 20 and connected through a link 22 to the throttle actuating mechanism. The needle valve may be adjusted independently by an arm 23. The fuel drawn through the fuel pipe. may be mixed with air or gas. The part 24 connecting the carburettor to the engine is screwed into the casing 1 so as to leave a recess 25 in which are guided for to and fro movement two slides 26, 27 forming a central aperture throttle valve substantially at the throat of the double conical upper end of the jacket 6. Each of the sliders has a pin 29 engaging eccentric slots in a disc 31 rotatable bv a handle 32 which is embraced by an inclined slotted member 36 formed in one with the link 22. During starting, with the throttle slides fitting tightly around the jacket 6, all the air is drawn through the jacket. In modifications, the throttle slides may carry sleeves 37, 37<1>, Fig. 5, may overlap the nozzle outlet, Fig. 10, or may slide over the top of such outlet, Fig. 13. In the last case air only may be admitted to the engine and this may also be effected' by closing the fuel nozzle 5 by adjusting the arm 23.