baber/WOPTO huggingface dataset:
Patent GB-967443-A (GB)
Title: Improvements in or relating to the production of urethanes
Inventor: HAMPSON HORACE NEIL
IPC: C08G18/18
Filed: 1961-09-11
Abstract: Urethanes are produced by heating an organic isocyanate or isothiocyanate with a hydroxy-compound in the presence of a salt of a tertiary amino phenol which on heating yields the free phenol. Specifications 743,957, 785,053, 785,229, 793,065, 798,065, 799,955, 854,930, 867,452, 870,418, 871,278, 873,264, 873,738, 875,954, 876,062, 876,533, 876,648, 878,033, 883,142, 887,573, 887,988, 896,587, 928,845, 945,151, 945,153, 967,441 and 967,442 are referred to.ALSO:An organic isocyanate or isothioganate is heated with a hydroxy compound in the presence of a salt of a tertiaryaminophenol, the salt dissociating on heating to yield free t-aminophenol. Many suitable salts are mentioned, the preferred phenols having the formula <FORM:0967443/C3/1> where alk is alkylene; R3 and R4 are each an alkyl group, and the preferred acids the formula: R5.R6.R7.C.CO2H where R5 and R6 are each alkyl, cycloalkyl, aryl or aralkyl and R7 is hydrogen or as R5 and R6, the acid preferably having 6-20 carbon atoms. Many suitable isocyanates are listed and these may be "marked" or "blocked" or in the form of their polymers.  The hydroxy compound may be the usual polyethers, adducts of aminos and epoxy compounds, or polyesters.  Another compound containing active hydrogen atoms may be present as well as the hydroxy compound, or may be added to a pre-condensate of hydroxy compound and excess isocyanate e.g. to give foams; typical such compounds are listed, and if the reaction is one-stage, organo-tin catalysts, silicone oil surfactants, solvents and/or filler may be added.  In addition to the possible formation of CO2 or COS and hence of foams, a blowing agent may also be present. The reaction conditions may be substantially anhydrous and may be performed under an inert atmosphere or under reduced pressure, and the isocyanate may be added stepwise.  An example is given and comparison is made with a composition using a free t-amino phenol in place of the salt.  Specifications 743,957, 785,053, 785,229, 793,065, 798,065, 799,955, 854,930, 867,452, 870,418, 871,278, 873,264, 873,738, 875,954, 876,062, 876,533, 876,648, 878,033, 883,142, 887,573, 887,988, 896,587, 928,845, 945,151, 945,153, 967,441 and 967,442 are referred to.ALSO:Textiles are coated with cellular material comprising polyurethanes formed in situ using, as latent catalysts, salts of tertiary aminophenols which decompose to the free phenol on heating.  Specifications 743,957, 785,053, 785,229, 793,065, 798,065, 799,955, 854,930, 867,452, 870,418, 871,278, 873,264, 873,738, 875,954, 876,062, 876,533, 876,648, 878,033, 883,142, 887,573, 887,988, 896,587, 928,845, 945,151, 945,153, 967,441 and 967,442 are referred to.
Patent GB-725130-A (GB)
Title: Improvements relating to columns in particular distilling columns
IPC: B01D3/32
Filed: 1953-11-24
Abstract: 725,130. Distillation &c. columns. RIETMANN, M. O. KUHNI-, and KUHNI, F. H. Nov. 24, 1953 [Nov. 26, 1952; Feb. 26, 1953], No. 32566/53. Class 55 (2). Distillation &c. columns, gas washing towers &c. with superposed compartments formed by spaced perforated plates 2, 2a, carrying liquid to the level of downcomers 5, 4a, have sealing means for the plate peripheries in the form of metal rings 6, 6a, shown as of inverted F-section which bear elastically against the column wall and furnishing a narrower gas passage through the slot accommodating the plate than the individual plate openings 3. The ring is pressed against the column wall -by means of a turnbuckle comprising a screw spindle having nuts which bear against lugs 11 welded to the opposed ends of the ring which have co-operating extensions and recesses so as to narrow the gap and increase the resistance to gas flow. In a modification for smaller columns a tightly wound coil spring is pressed from above into the space between the wall and a suitably curved downwardly directed peripheral flange of the plate. The plates are each preferably supported on the underlying plate by feet depending from their underside. The spring may be replaced by a flanged ring having radial slits or the plate edge itself may be flanged and slit.
Patent GB-673025-A (GB)
Title: Safety devices for internal combustion engines operating in a group
Inventor: HORNER FRANCIS HENRY
IPC: F01M1/22
Filed: 1949-12-20
Abstract: 673,025. Driving-gear. ENGLISH ELECTRIC CO., Ltd. Dec. 15, 1950 [Dec. 20, 1949], No. 32602/49. Class 7(ii) [Also in Group XXVI] In a group of I.C. engines 1 operating on a common load each engine has its own lubricating oil system and drives the common output shaft 6 through a fluid coupling 3 and a worm 4 and wheel 5 and may be disconnected therefrom by tripping the fluid coupling 3. The trip lever 94 is maintained in the open position by lubricating oil pressure on a spring-loaded piston 91 and is closed either automatically when the lubricating oil pressure falls below a certain value (see Group XXVI) or at will by closing a cock 80.
Patent GB-740955-A (GB)
Title: Preparation of colourless alkyl acid phosphates
IPC: C07F9/11
Filed: 1953-11-25
Abstract: An alkyl acid phosphate is obtained by reacting an aliphatic alcohol with phosphorus pentoxide in the presence of hypophosphorous acid or a stable hypophosphite.  The reaction yields light-coloured or substantially colourless alkyl acid phosphates and is usually effected at 0-100 DEG  C., e.g. by mixing the reactants together with or without agitation and then separating the alkyl acid phosphate from unreacted starting material.  It is preferred to mix the hypophosphorous acid or the hypophosphite with the aliphatic alcohol before adding the phosphorus pentoxide.  The reaction is generally effected at atmospheric pressure but other pressures may also be employed. The molar ratio of alcohol to phosphorus pentoxide is normally about 3 to 1 but other ratios may be employed to vary the hydrogen content of the end product.  The hypophosphorous acid used should preferably contain less than 50 per cent water.  Specified hypophosphites are lithium, sodium, ammonium, potassium, calcium, strontium, barium, magnesium, cadmium, and aluminium hypophosphites and these salts may be employed in the anhydrous or the hydrated state.  The amount of hypophosphorous compound may be between 0.1 and 10 per cent by weight of the alcohol. Specified aliphatic alcohols are methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, amyl, isoamyl, hexyl, isohexyl, heptyl, octyl, and iso-octyl alcohols, 2-ethylhexanol, methylisobutyl-carbinol, diisobutyl carbinol, and lauryl, stearyl, cetyl, myristyl, decyl, and capryl alcohols.  When the methyl, ethyl, propyl, and butyl alcohols are used the esters obtained may not be colourless and may be further clarified by heating at 60-100 DEG  C. for between 2 and 20 hours or until a precipitate forms.  The precipitate may be removed by filtration, by oxidation with air or gaseous oxygen, or by the addition of sufficient of an oxidizing agent, e.g. hydrogen peroxide, to cause the precipitate to dissolve.  Alcohols above butyl alcohol yield colourless esters which do not require further clarification. Examples are given for the production of n-propyl acid phosphate, amyl acid phosphate, isobutylethyl acid phosphate and stearyl acid phosphate using hydrophosphorous acid in each case and of n-propyl acid phosphate using sodium hypophosphite monohydrate, calcium hypo-phosphite, and potassium hypophosphite, respectively.  The n-propyl acid phosphate obtained by reacting in the presence of hypophosphorous acid is further clarified by heating over a water-bath at about 80 DEG  C. for 48 hours, the precipitate formed being removed by adding 30 per cent hydrogen peroxide.  The products are generally colourless or only slightly coloured.  When the examples are carried out without the addition of the hypophosphorous compound the products obtained are stated to be more highly coloured.
Patent GB-1092708-A (GB)
Title: Improvements in or relating to tool holders for lathes and other machine tools
Inventor: ANDREWS JOSEPH
IPC: B23B27/16
Filed: 1966-07-21
Abstract: 1,092,708. Cutting tools. J. ANDREWS & SONS Ltd. July 21, 1966, No. 32813/66. Heading B3B. A cutting tool for a lathe comprises a holder 1 with a recess at one end for a cutter 6 and a clamp 12 which is secured to the holder and co-operates with the cutter to urge it into the recess. The cutter is formed by a tip 7 and a seat portion 8, the base of the recess being concave to receive the convex projection on the cutter seat 8. The back 3 of the recess is formed to fit part of the periphery 11 of the cutting tip 7. A hardened steel ball 16 is located between the clamp 12 and the tip 7, the ball engaging the periphery of an aperture 10 in the tip. The other end of the clamp has an inclined surface which co-operates with a corresponding surface 17 on the holder shank so that when the clamp screw 19 is tightened the cutter is urged into the base of the recess and at the same time into engagement with the back of the recess to provide maximum rigidity between the cutter and the holder. The cutter may be formed in one piece, the tip and seat portion being integral.
Patent GB-1184377-A (GB)
Title: Process for production of Methylchloroform
IPC: C07C19/05
Filed: 1967-07-17
Abstract: 1,184,377. Preparation of methylchloroform. UGINE KUHLMANN. 17 July, 1967 [20 July, 1966], No. 32827/67. Heading C2C. Methylchloroform is prepared by passing ethylene and HCl into a first reactor in the presence of a hydrochlorination catalyst of the Friedel-Crafts type, to form a gaseous mixture comprising ethyl chloride, introducing the latter with chlorine and a diluent gas into a cooled reactor having a source of actinic light, the molar ratio of Cl 2 : C 2 H 5 Cl being from 1: 1 to 6: 1, the temperature being 25-200‹ C. and reaction period 1-30 seconds, the methylchloroform formed being separated from the diluent, unconverted reactants and from the more volatile and/or less volatile chlorinated byproducts and the required quantity of the HC1 and of diluent and other products being recycled to the first reactor and photochemical reactor respectively as required. The pressure in the two reactors is preferably the same i.e. 1 atmos. up to 10 kg/cm.<SP>2</SP>. The methylchloroform may be extracted from the reaction mixture by washing with a heavy organic solvent, e.g. hexachlorobutadiene, to give a solution which may be distilled to yield solvent, by-products more volatile then CH 3 Cl 3  and methyl-chloroform respectively. Alternatively the reaction mixture may be compressed and cooled to give uncondensed gas consisting of HCl and impure methylohloroform which may be purified by distillation. In the example the catalyst in the first reactor was AlCl 3  and the diluent gas in the photochemical stage was HC1.
Patent GB-654830-A (GB)
Title: Improvements in or relating to communication apparatus
IPC: H04R3/00
Filed: 1948-12-20
Abstract: 654,830. Intercommunication systems. PHILIPS ELECTRICAL, Ltd. Dec. 20, 1948, No. 32856. Convention date, Dec. 23, 1947. [Class 40 (iv)] An aircraft intercommunication system comprises a number of microphones 2, 3, 4 and a radio receiver 13 connected through a common amplifier 1 to reproducers 21, 31, 41. One microphone 2 has access to a radio transmitter 6. A cathode resistance 22 of a valve 20 in the amplifier 5 is coupled through a resistance 23 to the grid of a valve 14 in the common amplifier. The same resistance blocks the path from the microphones 3, 4 to the transmitter. In a modification, Fig. 3 (not shown), the first stage of amplification in 5 is dispensed with. When the radio transmitter is not required the microphone 2 may be connected to the amplifier 1 by means of a switch. Alternatively the transmitter circuit may be switched off beyond the valve 20.
Patent GB-390458-A (GB)
Title: Spectacle frame
IPC: G02C1/06
Filed: 1932-11-21
Abstract: 390,458. Spectacles. CARSON, O. B., 112, Wallbrooke Road, Scarsdale, New York, U.S.A. Nov. 21, 1932, No. 32869. Convention date, Nov. 30, 1931. [Class 97 (i).] To facilitate adjustment of a spectacle frame, a link which is pliable or adjustable in any direction is interposed between the lens rim and the side or temple piece. In the form shown, the link 3 is connected to the upper part of the rim 1 and to the side 5 by pivots 2, 4, having parallel axes, the link extending outwardly, downwardly, and rearwardly from the pivot 2 towards the pivot 4, and following the contour of the rim so that it is not seen from the front. For limiting its rearward movement the link is formed with a lug which engages the wall of the pivot attachment 2. A spring may be placed within the pivot 2 to urge the link forwardly and thus draw the side on to the wearer's ear. In another form the link is made integral with the rim and is pivoted only to the side.
Patent GB-1007145-A (GB)
Title: Improvements in and relating to apparatus for purifying or washing air or other gas
IPC: B01D47/02
Filed: 1961-09-13
Abstract: 1,007,145. Gas washing apparatus. DRUM-  MOND PATENTS Ltd. Sept. 11, 1962 [Sept.  13, 1961], No. 32895/61. Heading B1R. In a gas washing apparatus the gas to be washed is sprayed by sprays 8, Fig. 1, as it passes downwardly through a convergent conduit 9 to impinge on the surface of a body of liquid 3 before passing upwardly between baffles 17, Fig. 2, the mixture of gas and entrained liquid thus formed striking against the lowermost of a series of baffles arranged in the space below the gas outlet 5. In a modification a set of contact plates is arranged underneath the lowermost baffle 11 and above there is an upwardly directed liquid spray and a plate supporting a bed of Raschig rings sprayed with liquid from above and through which the washed gas is passed before traversing the remaining baffles 11.
Patent GB-653626-A (GB)
Title: Improvements in or relating to liquid fuel burners
Inventor: THOMPSON ARTHUR CHARLES RUNCIM
IPC: F23D11/28
Filed: 1947-12-13
Abstract: 653,626. Liquid fuel burners. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Dec. 13, 1947, No. 32921. [Class 75(i)] In a liquid fuel burner of the spill type comprising a swirl chamber 7 Fig. 2, having tangential fuel inlet ports 8, the spill tube 14 has a tubular extension 26 extending towards the discharge orifice 10 for such a length that the liquid fuel swirling around said extension 26 reaches the open end thereof only after it has lost a substantial part of its kinetic energy. The area of the annular section contained between the open end of the extension 26 and the radially adjacent wall of the chamber 7 may be substantially equal to the cross sectional area of the extension 26. As shown in Fig. 3 the tubular extension 29 may be connected to the tube 14 by a ball or other universal joint 31, 32, whereby the extension 29 may align itself automatically with the axis of the fuelvortex and so compensate for any slight offsetting of the orifice 10 relative to the axis of the chamber 7.
Patent GB-521178-A (GB)
Title: Improvements relating to electric switches, socket connectors and the like
IPC: H02G3/12
Filed: 1938-11-12
Abstract: 521,178. Two-part couplings ; switch cases. TUCKER & CO., Ltd., J. H., and MILLING- TON, S. A. Nov. 12, 1938, No. 32954. [Class 38 (i)] [Also in Group XXXVII] A flush-mounted wall fitting is provided with a chamber at the rear having sufficient capacity for the slack of the cable and having a removable cover and cable inlets, so that the use of a separate wall box is dispensed with, the fitting being mounted on a frontal plate. A switch fitting, Fig. 2, having a dished frame f to which a cover plate g, h is attached, has a chamber a secured to the rear and closed by a cover plate b. Several cable inlets are formed in the plate b and covered by a sliding or rotary disc d that closes all but one. Alternatively the chamber may be formed as a cup or dishshaped attachment j, Fig. 5, in the sides of which are cable inlets j<3> closed by knock-out portions. The cover-securing screw c, j<1> may connect with the earthing socket fitting, for example i<1>, Fig. 5.
Patent GB-614548-A (GB)
Title: Improvements in or relating to air intakes for high speed flight
IPC: F02C7/04
Filed: 1945-12-05
Abstract: 614,548. Air inlets for aero-engines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and DAVIDSON, I. M. Dec. 5, 1945, No. 32964. [Class 4] A gaseous fluid-flow diffuser system having an intake required to operate under supersonic velocity conditions, such as the air inlet of an aircraft gas-turbine plant, is provided downstream of the intake with an opening communicating with the external atmosphere and allowing the escape of fluid not required to satisfy the demand of the system. In the form shown an annular air duct 2 of sufficient area to meet the maximum demand of the plant is provided around a nacelle or fuselage 1, the wall of the duct being formed with a single annular slot 4 located at a position where the air velocity is subsonic. The opening in the intake duct may take the form of perforations or grids, and may be controlled by adjustable gills or flaps. Specification 439,805 is referred to.
Patent GB-986250-A (GB)
Title: Process for the preparation of polygylcidyl ethers of polyhydric phenols
IPC: C08G59/06
Filed: 1963-08-21
Abstract: A process for the preparation of solid polyglycidyl ethers of polyhydric alcohols, which ethers have a Durrans melting point of at least 50 DEG C., by reacting not more than 1.75 mol of an epihalohydrin or a glycerin halohydrin with one mol of a polyhydric phenol is characterized in that an aqueous alkali hydroxide solution is added to a mixture of the halohydrin, the polyhydric phenol and water.  The preparation may be carried out in an oxygen-free or substantially oxygen-free atmosphere (e.g. nitrogen) and/or in the presence of sodium dithionite. The alkali hydroxide specified is sodium hydroxide and the halohydrin is epichlorohydrin. Many polyhydric phenols are specified including monomeric polyhydric phenols; novolac resins from the reaction of phenols with, for example, formaldehyde, acetaldehyde and crotonaldehyde; and the condensates of phenols with cardanol, aliphatic diols or unsaturated fatty oils.  For the purposes of comparison a polyglycidyl ether is prepared by adding epichlorohydrin to a solution of diphenylalpropane in aqueous sodium hydroxide.  The products of the invention are useful in the preparation of light-coloured coating compositions.
Patent GB-982762-A (GB)
Title: Improvements in or relating to line-conveyors
Inventor: LEWIS JOHN FREDERICK
IPC: B65G13/00
Filed: 1961-09-15
Abstract: 982,762. Driving the rollers of rollerway conveyers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 8, 1962 [Sept. 15, 1961], No. 33211/61. Heading B8A. Rollers 1 of a rollerway conveyer are driven by a reciprocating rod 6 which is operated by a fluid cylinder 12. Engagement is made upon each roller by a rubber insert 7 mounted in rod 6, the rod being supported for movement upon rolls 8. At the end of the forward movement, rod 6 is rotated to the left to the position shown by fluid cylinder 13. In this position rollers 1 of the articles may be pushed therealong by hand. Alternatively, if in this position the rod 6 is drawn backwards it may then be rotated to the right by cylinder 13 ready for a second forward movement of the rod to give a further conveying movement to the rollers 1. Thus articles may be conveyed along rollers 1 either by hand or by the driving of the rollers.
Patent GB-1449411-A (GB)
Title: Automotive vehicle gear change mechanisms
IPC: F16H63/34
Filed: 1974-07-26
Abstract: 1449411 Change speed control TOYOTA JIDOSHA KOGYO KK 26 July 1974 [19 Nov 1973] 33243/74 Heading F2D A reverse balk, for a gate-guided shift lever 11  of a five speed and reverse transmission on a motor vehicle, in which fifth ratio and reverse are on opposite ends of the same linear channel at one end of a cross-shift neutral passage, comprises a spring-loaded stop pin 30 which, when the shift lever 11 is turned about the axis of a gear establishing rod 10 to select the 5-R shift rail 14, is cammed by a projection 11b of the lever downwardly into a housing 24 mounted non-rotatably on a fixed rod 20 parallel to the rod 10, for sliding axial movement limited by fixed stops 32, 33, the arrangement being such that, in moving from neutral N to 5 setting at the point D, the lever projection 11b rides on the end of the depressed pin 30 until, at a distance SC, its trailing face 11c rides off the pin, releasing the latter for outward spring movement, so that during return movement of the shift lever 11 towards R setting (point C) the lever projection 11b takes along the pin 30 and housing 24, until the latter is arrested by the stop 33 at a distance SN corresponding to neutral, further movement towards R setting being then balked by the pin 30. To engage R, the lever 11 is turned into the cross-over neutral passage to the 3-4 shift rail 13, whereupon a spring 31 returns the pin housing 24 to the position shown. When again the 5-R rail 14 is selected, the lever projection again depresses the pin 30, but now, in moving the distance SD to R setting at point C, the lever projection 11b rides along the top of the pin 30 without releasing it, so that the movement to R is not balked. The shift lever 11 is secured to the rod 10 which is slide-turned by a remote ball-mounted manual shift lever (6, Fig. 1, not shown). In Figs. 5 and 6, not shown, the pin housing 24 is fast on the rod 20, which has limited sliding movement in the gear easing. In Figs. 8 to 10, not shown, the pin 30 is depressed by a lateral part of the shift lever 11 and sliding movement of the pin housing 24 is limited by a cotter engaging a groove in the fixed rod 20. Figs. 11 to 13, not shown, provide balk for moving from R towards 5 in addition the above 5 to R balk. The pin housing 24 is biased to a central position by two opposing springs 31, (46) and a spring-loaded ball detent (42) engaging a cam recess (41) in the rod 20. The lever projection 11b is narrow enough to ride off the stop pin 30 in both directions of movement, thereby releasing the stop pin for balk in neutral in both directions.
Patent GB-1507719-A (GB)
Title: Photochromic particles and photochromic elements containing same
IPC: G02B5/23
Filed: 1975-08-08
Abstract: 1507719 Photochromic materials AMERICAN OPTICAL CORP 8 Aug 1975 [19 Aug 1974] 33251/75 Heading C4S [Also in Division C3] A photochromic particulate material comprises silver halide crystals of dimensions 30 to 10<SP>3</SP>Š each with a halogen impervious coating. A small number of Cu<SP>+</SP> ions (e.g. 0À1 to 10%) may replace Ag<SP>+</SP> ions. Also up to 50 ion percent of Ag<SP>+</SP> may be replaced by at least one of Li<SP>+</SP>, Na<SP>+</SP>, K<SP>+</SP>, Rb<SP>+</SP>, Cs<SP>+</SP> or Tl<SP>+</SP>, Ca<SP>++</SP>, Mg<SP>++</SP>, Sr<SP>++</SP>, Ba<SP>++</SP>, Zn<SP>++</SP> and Cd<SP>++</SP>. Iodides, chlorides and bromides are specified. Ophthalmic quality plastics material may contain 0À01 to 10% wt. of the particles. The volume of coating is preferably < 100 times or < 10 times the crystal volume. The coating material may be of glass, silica or one or more of TiO 2 , Al 2 O 3 , ZnO, or Sb 2 O 3  and additionally prevents interaction with monomers and peroxides which may be in the host. Detailed preparations commencing with aqueous ethanol solutions of silver nitrate and sodium halide for example are included, ripening inhibitors and silica source materials being specified. The particles may be dispersed in the monomer of an allyl resin such as allyldiglycol carbonate, polymerization catalyst added, and the mixture cast in a lens mould. Cellulose triacetate, cellulose acetate butyrate, bisphenol-A polycarbonate, polymethyl methacrylate, polystyrene epoxies and polyesters and mixtures thereof are disclosed. The particles may be mixed with powdered thermoplastic polymer and injection moulded. Applications include ophthalmic quality elements.