baber/WOPTO huggingface dataset:
Patent GB-1165316-A (GB)
Title: Locking Screw
Inventor: BUTLER KEVIN ERROL
IPC: F16B39/34
Filed: 1968-06-29
Abstract: 1,165,316. Locking screws. FORD MOTOR CO. Ltd. 29 June, 1968, No. 31229/68. Heading F2H. A screw 1 having a radial hole 3 is provided with a deformable, plastics locking pin 5 the length of which is greater than the root diameter of the screw but is less than the external diameter of the screw. As shown, the pin is tapered and its end 6 projects beyond the roots of the thread. When a nut is engaged with the screw, the nut engages the end 6 thus exerting an axial force on the pin and causing it to cold flow so that the narrow end 10 of the pin also engages the threads of the nut. In a modification the pin is cylindrical and the hole is tapered. The pin is preferably made of nylon.
Patent GB-1189555-A (GB)
Title: Gas Flow Measuring System and Shock Pulse Detector Utilized in said System.
IPC: G01F1/66
Filed: 1968-07-01
Abstract: 1,189,555. Measuring gas flow ultrasonically. UNITED AIRCRAFT CORP. 1 July, 1968 [20 July, 1967], No. 31301/68. Heading H4D. [Also in Division G1] A detector for a shock pulse travelling through a medium along a selected path comprises a piezoelectric crystal having first, second and third orthogonal axes with the third axis normal to said path and produces a voltage along the first axis in response to compression in the crystal caused by the pulse and a voltage along the second axis in response to shear in the crystal caused by the pulse. Detector details.-In the Fig. 2 embodiment the crystal is a rectangular block 30 of, e.g. quartz. Supports 32, 34, e.g. of brass or aluminium (which has a similar acoustic impedance to quartz), each provide electrical connection to two adjacent faces of crystal 30 so that the voltages produced along the two axes by a pulse travelling along path P and imping- ing on the crystal from the left or the right effectively add in phase. A film of silicone oil may be used as a couplant between the supports and the crystal. An anti-vibration mount comprises inertial mass 28 (e.g. of brass) on a resilient support 36 (e.g. of nylon). Electrical connection of supports 32, 34 to amplifier 16 is via mass 28, insulated lead 46, flexible leads 52, 54, and a low-capacitance coaxial coupler 56 supported by 0-rings 64 and surrounded by an acoustic shield 67. The crystal may be oriented with one voltage-producing axis at a small angle to the pulse propagation path. The angle is selected, in dependence on the crystal dimensions and the ratio of the pulse velocities in the medium and in the crystal, to give optimum shear and compression of the crystal. Measuring gas flow.-The shock pulse detector is mounted with a shock pulse generator 12 and reflector 22 in a housing 24. Two such generator/detector combinations are fixed one at each end of a conduit 10 for transmitting pulses alternately upstream and downstream along a common path P through the gas. A timing device is started when a pulse reaches one detector and is stopped when the same pulse reaches the second detector. Upstream and downstream propagation times are found in this way and compared. A baffle 27 reduces the amplitude of the pulse reaching the detector from the nearer generator 12 to that of the pulse from the farther generator, so that propagation time errors due to pulse rise-times are avoided.
Patent GB-210211-A (GB)
Title: Improvements in rotary pumps and motors
IPC: F04C2/32
Filed: 1922-11-17
Abstract: 210,211. Braun, J. Nov. 17, 1922. Channels in rotary engines and pumps.-Lubricating and sealing oil passes from a separator 26 under the control of a valve 20 in a conduit 19 to an axial boring 21 in the engine or pump shaft from which lead borings 21<a>, 21<b> feeding the bearings and a boring 21<c> supplying an axial boring 23 in an eccentric 9 and also supplying a radial boring 22 with which registers at the dead centre position a boring 24 in a piston sleeve 7 surrounding the eccentric and carrying an abutment 10 sliding in a rocking member 14. The inner surface of the cylinder may be roughened to retain an oil film.
Patent GB-889894-A (GB)
Title: Photographic everset shutter
IPC: G03B9/14
Filed: 1960-09-13
Abstract: 889,894. Camera shutters. AGFA A.G. Sept. 13, 1960 [Sept. 19, 1959], No. 31513/60. Class 98(1). A photographic everset shutter comprises a spring loaded pivoted accelerator member which is tensioned and liberated by the shutter release to operate the return spring loaded shutter master member by impact; means are provided to limit the "blade opening" path of the master member, and thereby vary the shutter speed, after contact between the two members has ceased. In the shutter shown two blades 2, 3 are pivoted at 5, 4 respectively and are movable in opposite directions over the exposure aperture in plate 1 by a projection 8 on the master member 11 which engages slots 6, 7 in the blades, the member 11 being biased by spring 14 in a position in which the blades are closed. A lever 19 is pivoted at 18 on the shutter release trigger 16 and when the latter is pressed downwards the lever 19 is initially guided slowly over a projection 22 so that a spring 17 is tensioned. Therefore, when lever 19 moves off projection 22 it is urged by spring 17 against a projection 23 On the member 11 which is moved by this force to open the blades. The exposure time is controlled by a lever 24 which can be set in three catch positions with a projection '32 on the plate 9 engaging one of slots 29, 30, 31. When the lever is in the position indicated by slot 31 it has no influence on member 11 and the blades are opened fully by the impulse on projection 23 and then closed by action of spring 14. When the projection 32 engages slot 30, a surface 27 on lever 24 moves into the path of a projection 34 on member 11 and prevents the blades from opening fully, thereby shortening their path and reducing the exposure time. Similarly when the projection 32 engages the slot 29 a surface 26 on the lever 24 engages the projection 34 but in this position lever 19 cannot move off projection 23 so the blades are held open until the trigger 16 is released. The invention can be applied to single or multiple blade shutters and by providing a suitable number of catch positions, a continuous series of shutter speed settings can be obtained.
Patent GB-718354-A (GB)
Title: Improvements in or relating to selenium rectifiers
IPC: H01L21/105
Filed: 1952-12-12
Abstract: 718,354. Dry plate rectifiers. STANDARD TELEPHONES & CABLES, Ltd. Dec. 12,1952, [Dec. 20, 1951.] No. 31559/52. Class 37. A selenium rectifier comprises a thin layer of a metal of the secondary group of the fourth and fifth periodic groups (e.g. germanium, tin, lead, antimony and bismuth) with the addition (up to 50 per cent) of thallium, indium gallium or silver, between the selenium and the counterelectrode. The constituents of the intermediate layer may be applied simultaneously or successively by evaporation in vacuo, using two evaporators close together. Bismuth and thallium are the preferred materials, and the counter electrode may consist of an alloy or mixture of bismuth, lead, tin and cadmium, and particularly an alloy of tin and cadmium selected to have a melting point about 178‹.
Patent GB-316485-A (GB)
Title: Combing machine
IPC: D01G19/10
Filed: 1928-10-31
Abstract: 316,485. Sundberg, R. C., and Torulf, H. G. Oct. 31, 1928. Combing-machines. - In a combing- machine of the Heilmann type a series of detaching segments 9 are mounted on the comb shaft 17 and are adapted to rotate thereon independently of the comb 6. The comb may be provided with needles 7 over the whole of its circumference and may be rotated at an increased speed. The segments 9 have a radius slightly greater than the points of the needles and in rotation engage the tuft and remove it from the needles, whereupon it is engaged and drawn off and pieced by the usual detaching rollers 10, 11, 12. The rear end of the combed tuft is combed by the top comb 14, or this comb mav be omitted and the rear end of the tuft 13 be combed, when it is returned by the rollers 11, 12 for piecing, by the cylinder 6. The segments 9 are supported at the ends by discs 8 on hollow shafts 18 and between the heads of the machine by loose rings mounted on the comb cylinder between the combs. The radius of the rings is slightly less than the internal radius of the segments 9. Axial movement is prevented by screws on the rings engaging grooves in the cylinder.
Patent GB-975773-A (GB)
Title: Improvements in or relating to the manufacture of photographic colour images
IPC: G03C7/34
Filed: 1961-09-04
Abstract: The compound of formula <FORM:0975773/C1/1> is prepared by reacting 2-amino-5-nitrophenol with sebacic acid ethyl ester acid chloride to give 2-(o  - carbethoxy-pelargoylamino)-5-nitrophenol which is then reduced to the corresponding 5-amino compound and this product condensed with 2-thenoyl chloride.  The compound of formula <FORM:0975773/C1/2> is prepared by reacting 2-amino-5-nitrophenyl with 2-thenoyl chloride to give 2-thenoylamino-5-nitrophenol which is reduced to 2-thenoylamino-5-aminophenol and this product reacted with 2-(2-hexadeceny)-succinic anhydride.  The compound of formula <FORM:0975773/C1/3> is prepared by reacting 2-thenoylamino-5-aminophenol with p-hexadecyloxybenzoyl chloride. Specifications 478,985, 562,205, 797,141 and 906,908 are referred to.
Patent GB-796796-A (GB)
Title: Improved hydrolysis process for the manufacture of amines
Inventor: LANG GEORGE HENRY
Filed: 1955-11-07
Abstract: Inisubstituted primary methylamines are obtained by hydrolysis of N-substituted formamides containing a tertiary carbon atom attached to amido nitrogen, which tertiary carbon atom may carry either aliphatic substituents or aliphatic substituents together with a cycloalkyl, an aralkyl or an aryl radical, or may be part of a monocyclic cycloaliphatic ring, the hydrolysis being carried out in the presence of acid at a temperature above 70 DEG  C., preferably between 100 DEG  and 120 DEG  C.  The acid used is preferably a strong mineral acid, e.g. sulphuric or hydrochloric acid, but strong organic acids, e.g. aryl or alkyl sulphonic acids or oxalic acid, may be used.  Preferably at least one mol. of acid is used for each mol. of N-substituted formamide, and the acid may be mixed with water, a suitable mixture being one containing 10 to 85 per cent of acid by weight.  The N-substituted formamides may be obtained by reaction of hydrogen cyanide, in the presence of an acid-reacting catalyst, with an olefin which gives a tertiary alkanol on reaction with water as described in Specification 796,572.  Suitable starting materials are N - t - butyl formamide, N - (1,1,3,3 - tetramethylbutyl) - formamide, N - (1 - methylcyclohexyl) - formamide and N - (2 - phenylisopropyl) - formamide.  The N - substituted formamide may be hydrolysed directly, without isolation from the reaction mixture in which it is formed.  The products may be isolated by adding alkali metal hydroxide or carbonate, followed by extraction, distillation or mechanical separation.  Typical products are t-butylamine, 1,1,3,3 - tetramethylbutylamine, 1 - methylcyclohexylamine and 2 - phenyl - isopropylamine.  In examples: (1) N-t-octylformamide and 30 per cent sulphuric acid are refluxed for 2 hours and t-octylamine is isolated by distillation; (2) isobutene is passed into an aqueous mixture of sodium cyanide and sulphuric acid and the mixture is heated to 50 DEG to 55 DEG  C., whereafter N-t-butylformamide separates as an upper layer on standing; the mixture is then heated to boiling under reflux for 1 hour to hydrolyse the N-t-butylformamide to t-butylamine; (3) commercial diisobutene (2 : 4 : 4 - trimethylpentene - 1 and 2,4,4 - trimethylpentene-2) sodium cyanide, water and sulphuric acid are heated to 50-55 DEG  C. to give N - t - octylformide which is then hydrolysed to t-octylamine by boiling under reflux; (4) N-t-octylformamide is hydrolysed in presence of hydrochloric acid; (5) 1-methylcyclohexene is treated as in (3) to give 1-methylcyclohexylamine; (6) N-t-octylformamide is hydrolysed using oxalic acid solution.
Patent GB-636466-A (GB)
Title: Improvements in and relating to the recovery of chlorohydrins
IPC: C07C29/74
Filed: 1946-10-25
Abstract: Chlorhydrins such as ethylene and propylene chlorhydrins are recovered from aqueous solutions containing them by extraction with a substantially water-insoluble liquid solvent comprising an ether or its halogenated derivative containing two or more ether groups per molecule, and distillation of the solution under reduced pressure, preferably below 250 mm. absolute.  The aqueous solutions may contain salts produced in preparing the chlorhydrin and added subsequently. Solvents include ethylene glycol ethyl butyl ether, propylene glycol ethyl propyl ether, b -chlor-b 1-ethoxy or methoxy-diethyl ether, and b ,b 1-dibutoxy-diethyl ether.  In examples, 8 per cent ethylene chlorhydrin solution is saturated with common salt and extracted in stages in counter-current with half its volume of solvent. Specification 564,090 is referred to.
Patent GB-906696-A (GB)
Title: Improvements in electric cables and electric cable systems
IPC: H02G15/22
Filed: 1958-09-01
Abstract: 906,696. Cooling cables; cable end sleeves. OKONITE CO. Sept. 1, 1958 [Sept. 19, 1957], No. 31842/61. Divided out of 906,695. Drawings to Specification. Class 36. A cable has a plurality of longitudinal coolant ducts disposed around the conducting core but within the insulating layer. The ducts may be of metal or plastics, may be smooth-walled or corrugated, and a layer of semi-conducting tape may be applied before the insulating layer; the cable being finished with the usual screen and sheath. The coolant may be water, gas, or oil, circulated through a heat exchanger by a pump, such auxiliary apparatus being earthed and connected by lengths of flexible insulated and screened piping to the cable H.V. potheads, the piping being long enough to reduce the coolant potential to a safe value at the earthed end. Separate potheads may be provided for the auxiliary piping, these being linked to the cable potheads by rigid pipe (Fig. 1, not shown). The cable potheads (Figs. 5 and 6, not shown) are of conventional type excepting that they are provided with apertures through which extended portions of the coolant ducts of the cable are threaded into the interior of the hollow pothead terminal, where they communicate with the auxiliary piping previously referred to. The conductors terminate at the inner end of the pothead terminal and are mechanically clamped there by indenting the terminal wall. The usual stress relief arrangements may be provided.
Patent GB-520512-A (GB)
Title: Improvements in textile and like printing
IPC: D06P3/60
Filed: 1938-11-03
Abstract: 520,512. Dyeing textiles. SOC. OF CHEMICAL INDUSTRY IN BASLE. Nov. 3, 1938, No. 31854. Convention date, July 8. [Class 15 (ii)] Printing.-The fastness, especially to wet treatments, of prints obtained with dyestuffs fixed with the aid of mordants is improved by treating the printed material with an aqueous solution of a salt of a basic compound containing an uninterrupted chain of at least 10 carbon atoms and containing no group imparting an amphoteric character to the compound.. Specified compounds are those described in Specifications 339,962, [Class 15 (ii)], 366,918, 390,553, 441,767, 443,588 and 496,611. In examples: (1) a fabric of natural and/or regenerated cellulose is printed -with an aqueous paste containing Alizarine yellow GG or Gallocyanine, acid starch tragacanth thickening and chromium acetate and the printed fabric is dried, steamed washed and treated for 15 minutes in an aqueous solution at room temperature containing per litre 0.25 gram. of 4-stearylaminobenzenetrimethylammonium methosulphate ; (2) viscose artificial silk is printed with an aqueous paste containing Rhodamine B extra, or Violet B or Methylene blue D, acetic acid, gum arabic, tannin and tartaric acid and the printed goods are dried, steamed, rinsed and treated for 15 minutes with an aqueous solution at room temperature containing 0.2 gram. per litre of Á-heptadecyl - N:N - dimethylbenzimidazolium chloride. Specification 398,175 also is referred to.
Patent GB-318960-A (GB)
Abstract: 318,960. Soc. des Usines Chimiques Rhone-Poulenc. Sept. 13, 1928, [Convention date]. Acetic anhydride; acetaldehyde.-In the production of acetic anhydride and acetaldehyde by dissociation of ethylidine diacetate as described in Specification 238,825, polymerization of the aldehyde is prevented by passing the reaction vapours before condensation through organic acid salts, preferably acetates of alkalies, alkaline earths, or organic bases in suspension, or dissolved in a mixture of acetic anhydride and ethylidine diacetate and if desired acetic acid. The organic salts remove any halogen or other substance derived from the catalyst employed for the dissociation, and the acetaldehyde produced has no tendency to polymerize.
Patent GB-685292-A (GB)
Title: Apparatus for measuring the lift-coefficient of an aircraft
IPC: G01L15/00
Filed: 1948-12-11
Abstract: 685,292. Pressure gauges. BRAILSFORD, E. N. Dec. 5, 1949 [Dec. 11, 1948], No. 32099/48. Class 106. (ii). A lift - coefficient measuring apparatus for aircraft comprises a plurality of inlet port means adapted for parallel connection to an indicator operable in accordance with the air pressure at all the ports, the latter including a first port directed forwardly to receive total head air pressure, and at least two further ports located symmetrically on opposite sides of the longitudinal axis of the aircraft, and means for averaging the pressures at the further symmetrically located ports before passing to the indicator. Fig. 1 shows in an aircraft 1 inlet ports at 2, 3, 4 and 5, averaging manifolds at 6 and 6A, a mechanical indicator at 8, an electro-mechanical unit at 9 and various pipe connections 7, 10, 11, 12. The port means at 2 receives the total head (pitot) pressure, port 3 receives the ambient (static) pressure and ports 4, 5 the aerofoil static pressure. As shown in Fig. 5, the body of the indicator 8 contains two prime movers shown as bellows 20, 21. Bellows 20 is responsive to total-head pressure internally via pipe 10, bellows 21 is responsive to aerofoil static pressure internally supplied by pipe 12, and both bellows are responsive to ambient pressure externally, admitted to the body of the indicator by pipe 11. The indicator resolves the equation C LA =C 1 (H-S 0 /H 0 -S 0 )+C 2  or C LA =X[yC 1 (H-S 0 )/(H 0 -S 0 )+C 2 ] where C LA  = Average lift coefficient for the aircraft. H = Aerofoil static pressure. H 0  = Total-head (pitot) pressure. S 0  = Ambient (static) pressure. CC 2  = Constants of the installation and apparatus. x, y = Functions of Mach number and other variables. The indicating mechanism is responsive to the linear movement of the output stage 22 and the movement of pointer 23 relative to the scale 24 is proportional to the lift coefficient C LA  as defined by the above equation.
Patent GB-446687-A (GB)
Title: Improvements in or relating to self acting rakes
IPC: A01D76/00
Filed: 1934-11-08
Abstract: 446,687. Rakes. BLACKSTONE, H. V., and BLACKSTONE & CO., Ltd., Rutland Engineering Works, Stamford, Lincolnshire. Nov. 8, 1934, No. 32154. [Class 6 (iii)] A horse- or tractor-drawn self-acting rake is, in addition to the usual tripping mechanism, provided with a remote control device adapted, when brought into action by the driver, to retain the tines in their raised position for any desired period or to permit the tines to resume their normal collecting position. A latching tooth i, adapted to engage the end of an arm p on the rocking frame of the rake when the frame is in the raised position, is carried by a lever g having an end shaped to engage in curved recesses e, f in a rotary member d. When the end j is in one of the deep recesses e, the lever g drops to a position in which the tooth i engages and holds the arm p, thus maintaining the tines in their raised position after the rocking frame has been tripped; with the end in the alternate and shallower recesses f, the tooth i is held clear of the arm p and the frame falls in the usual way after being tripped. The member is rotated by ratchet teeth thereon being engaged by a pawl on a lever m actuated by a cord q extending to the attendant.
Patent GB-630540-A (GB)
Title: Improvements in and relating to the control of electrically operated winding or like equipment
IPC: H02P5/74
Filed: 1947-12-05
Abstract: 630,540. Control of two A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and LIDDIARD, H. W. C. Dec. 5. 1947, No. 32173. [Class 38(iii)] A winding haulage or like system comprises two induction motors having starconnected primary windings and the motors drive a common shaft. Two or more of those ends of the primary windings of one or both motors which are normally star-points are connected to opposite poles of a source of direct-current supply for braking purposes. Two induction motors, having primary windings P1 and P2 and secondary windings S1 and S2 respectively, are coupled to drive a common shaft and are connectable to a supply-source through reversing contactors F and R. These contactors have main contacts 1, 2, and 3 and auxiliary contacts 4 and 5 and are respectively adapted for high and low tension operation. Alternatively, separate low tension contactors may be provided which are operated simultaneously with the main reversing contactors. When contactors F and R are open a direct-current exciter D supplies all the windings P1 and P2 in series thus affording braking operation. When either of the contactors F or R are closed for ncrmal operation of the motors the star-points of the motor primary windings are completed through the contacts 4 and 5. The exciter D need not be disconnected since the star-points of the windings are at low potential, although its field windings will not be energized during motoring-operation. Fig. 2 (not shown) illustrates a modification in which the primary windings of one of the motors are permanently star-connected, two ends of the open star-point on the other motor being connected across the armature of an exciter while all three of the normally open ends are connected to auxiliary contacts on the reversing contactors. The exciter is not disconnected during motoring operation, its armature being short-circuited and its main field windings de-energized. The exciter may still be driven, in which case means are provided to limit circulating current due to residual magnetism. In this embodiment direct-current passes through only two of the phase windings on each motor during braking operation. The arrangement of Fig. 3 (not shown) is similar to that of Fig. 2 but two ends of the motor primary windings which have the open star-point are permanently connected. Direct braking-current is passed through the three phase windings of each motor, two of the phases taking only half the total current. One auxiliary contact is required on each of the reversing contactors. A contact for short-circuiting the armature of the exciter D may be omitted in which case the exciter armature will carry the alternating-current passing through one phase of the primary windings of one of the motors.