baber/WOPTO huggingface dataset:
Patent GB-751903-A (GB)
Title: Improvements in or relating to motor vehicle power steering
IPC: F16K31/00
Filed: 1954-06-09
Abstract: 751,903. Fluid-pressure servomotor-control systems. FORD MOTOR CO., Ltd. June 9, 1954 [June 10, 1953], No. 16959/54. Class 135. In a fluid - pressure power mechanism for steering a motor vehicle, a removable restricting member is inserted in one or both of the conduits leading from the control valve to the power device so as to damp out the initial surge in the flow of operating fluid with its resultant over-actuation. The restriction may have a fixed predetermined diameter and length, or it may be variable in accordance with the temperature of the oil used for operating the piston and cylinder power device so as to compensate for variations in viscosity. In this latter form, the restriction comprises an annular space between the conduit 53 and a cylindrical throttle plug 63 movable in the tube. The throttle is pressed outwardly by a spring 69, but is held in a restricting position by a temperature-responsive element 72, the latter expanding on a rise in temperature of the oil and pushing the throttle plug further into the conduit to increase the restricting effect. Flow to the power cylinder takes place through the conduit 51, aperture 59, chamber 58, past the throttle plug, and through conduit 53.
Patent GB-842680-A (GB)
Title: Improvements in trumpet for use with a textile drafting machine
Inventor: DUDLEY JOHN SYRIL
IPC: D01H5/72
Filed: 1958-05-28
Abstract: 842,680. Sliver condensers. WHITIN MACHINE WORKS. May 28, 1958, No. 17062/58. Class 120(1). A sliver-condensing trumpet has cylindrical recesses 33, 34 intermediate a conical entrance portion 30 and a restricted delivery portion 31. The recesses present abrupt restrictive ledges 35, 37 in the path of travel of the outer fibres of a sliver, forcing the forward ends of these fibres inwardly and causing them to interlock with the inner fibres and thus increasing the strength of the sliver. Specification 733,737 is referred to.
Patent GB-319252-A (GB)
Title: Improvements relating to percussive machines
IPC: E21B1/02
Filed: 1928-06-13
Abstract: 319,252. Climax Rock-Drill & Engineering Works, Ltd., and Grace, C. J. June 13, 1928. Borehole apparatus.-In percussive apparatus for forming boreholes, &c., wherein a cable, extends from a hoist drum to a. tool &c. and is engaged by a pulley, sheave, cam or eccentric carried by a rotary frame adapted to be engaged with and disengaged from a constantly driven member, when the frame is rotated the pulley &c. lifts the tool &c., whilst when the frame is released it is moved in the opposite direction by the fall of the tool &c. As shown in Figs. 1 and 2, a. loosely-mounted frame 1 carries a pulley 6 round which passes the cable 7; the frame 1 has a clutch member 5 adapted to be engaged with a constantly-driven clutch member 3 to cause the cable to lift the tool &c., the clutch being disengaged by suitable means after a desired lift. To vary the lift, further pulleys may be provided. A second frame 9 may be provided to give further support, the frame 9 being mounted either on the main shaft 2 or on an aligned shaft 12. A cam 16, Fig. 3, with rollers 14, may replace the pulleys. Recoil of the frames 1, 9, may be taken up by dashpots, springs, &c., and preferably by compression and tension springs acting on opposite ends of a lever secured to the frames.
Patent GB-1044782-A (GB)
Title: Manufacture of bis-2-hydroxyethyl terephthalate
IPC: C07C69/82
Filed: 1963-05-01
Abstract: Bis-2-hydroxyethyl terephthalate is prepared by direct esterification of terephthalic acid with ethylene oxide under conditions whereby an excess of terephthalic acid is maintained throughout the reaction, the ethylene oxide being added to the acid over a period of 5-15 minutes and less than the stoichiometric proportion of ethylene oxide (1.35-1.85 mols. of ethylene oxide per mol. of acid) being used.  The reaction is effected at 105-120 DEG C. in an aqueous medium containing, as catalyst, an alkali-metal or ammonium ion in a concentration of 1.5-2.5 mols. per litre of solution.  The source of the catalyst may be an alkali-metal hydroxide or salt, e.g. a terephthalate, bicarbonate, carbonate or borate.  The proportion of aqueous catalyst solution is 1.5-4 times that of the acid. The ethylene oxide may be supplied in gaseous or liquid form, suitably under a pressure of 80-250 lb. per sq. inch, and the reaction is preferably effected with the exclusion of air. The product may be purified by filtering or centrifuging at 65-75 DEG  C., to remove insoluble material, and then cooling to 5-15 DEG  C., to crystallize the product, which may be further purified by recrystallization from water at 5-15 DEG  C.  Examples are given.  Mixtures of terephthalic and isophthalic acids may be similarly esterified.ALSO:Bis-2-hydroxyethyl terephthalate is polymerized by heating it to 275-280 DEG  C. in an atmosphere of nitrogen in the presence of zinc acetate dihydrate.  The reaction temperature is maintained for 4-5 hours, the pressure being reduced in the final hour or two to 0.4-0.6 mm. The bis-2-hydroxyethyl terephthalate is made by the direct esterification of terephthalic acid with ethylene oxide under conditions whereby an excess of terephthalic acid is maintained throughout the reaction.
Patent GB-414880-A (GB)
Title: Electrical apparatus for anaesthetising dogs, cats and the like
IPC: A22B3/06
Filed: 1933-06-16
Abstract: 414,880. Electric stunning-appliances. GOLLEDGE, C. R., Staddlecote, Trowbridge, Wiltshire. June 16, 1933, No. 17179. [Class 5 (i).] An apparatus for anesthetizing animals comprises resilient tongs, the limbs of which, each carrying an electrode, serve as handle members for use in applying the electrodes to the animal. Tongs 10 comprise rigid limbs of insulating material resilently connected by a leaf spring 14 and carrying electrodes 16. Each electrode comprises metal plates 18, 20, the former being secured to the tongs limb and the latter being hinged at 25 to the former : an absorbent wad 36 is secured on the plate 20 by means of pins 34 and a spring clip 38. Stops 58 on the tongs limbs prevent contact of the electrodes 16. The plates 18 are connected by wires 22 to a single or double pole tumbler switch 42 carried by a holder 46 comprising a stem 48, elastic band 54 and sliding closure 56, the switch being connected to a wall plug 52. Alternatively, the electrodes may be in the form of brushes, fixed or movable on the tongs limbs.
Patent GB-1326297-A (GB)
Title: Method and means for removing dust from gases
IPC: B01D47/02
Filed: 1971-05-26
Abstract: 1326297 Separating dust from gases MIDLAND-ROSS CORP 26 May 1971 [25 June 1970] 17326/71 Heading B1R Dust laden gas, e.g. the effluent stream from a blast furnace, is passed through pipe 15 so as to impinge on the surface 37 of wash water in sump 12 at a velocity of at least 8000ft/min. The gas stream then rises through packing 21, 23 in counterflow to wash water which after introduction through pipes 31 to tray 25 passes down through the packing to the sump. The packing 23 adjacent the gas input pipe and the walls of the scrubber has a mean size no greater than half that of the rest of the packing 21; this is to avoid "channelling". Scrubbed gas leaves by pipe 17 while suspended dust is removed by pipe 14.
Patent GB-299820-A (GB)
Title: An improved process for the production of low-boiling hydrocarbons
IPC: C07C2/86
Filed: 1927-06-30
Abstract: 299,820. Gessmann, W., and Shalders, E. W. June 30, 1927. Hydrocarbons.-Low-boiling hydrocarbons are obtained by passing a mixture of unsaturated hydrocarbons (preferably acetylene), carbon monoxide, and hydrogen at normal pressure and without supplying heat over a metal catalyst which is subjected to the influence of chemically active light rays. A suitable catalyst is obtained by treating a mixture of finely divided copper, tungsten, and pumice with dilute alkali solution and drying thoroughly. The catalyst is initially heated to 70-80‹ C. and is maintained at that temperature by the heat of the reaction. It may be irradiated with ultra-violet rays for 15 minutes in every two hours.
Patent GB-545708-A (GB)
Title: Process for the preparation of stilbene derivatives
Filed: 1940-12-09
Abstract: 545,708. Amidines. MAY & BAKER, Ltd., EWINS, A. J., and ASHLEY, J. N. Dec. 9, 1940, No. 17452. Addition to 510,097. [Class 2 (iii)] Amidine compounds of the general formula Am.B.CH =CH.B.Am are prepared from nitriles of the formula CN.B.CH =CH.B.CN where B represents a benzenoid nucleus and Am represents an ami dine group, by reacting the amidine with an alkali metal amide and liberating the amidine by treatment with acid  from the alkali metal compound. The first stage is preferably carried out by heating the reactants in the presence of a solvent such as xylene, toluene, anisole, phenetole, or diphenyl, but it may be carried out at low temperature in liquid ammonia solution. In an example, 4:4<SP>1</SP>-dicyanostilbene is heated with powdered sodamide in anisole solution for 6 hours. The alkali metal compound of diamidino stilbene is treated with hydrochloric acid to give the hydrochloride of diamidino stilbene.
Patent GB-1417499-A (GB)
Title: Method for making alkylene- or cycloalkylene bis nitrogenzoate s  and of alkylene or cycloalkylene- bis amino-benzoate s therefrom
IPC: C07C205/57
Filed: 1974-04-22
Abstract: 1417499 Alkylene or cycloalkylene bis- (nitrobenzoate(s)) MONSANTO CO 22 April 1974 [23 April 1973] 17462/74 Heading C2C The invention comprises a method of producing an alkylene or cycloalkylene bis-(nitrobenzoate) of the formula wherein X is halogen, n is zero or one and R is a linear or branched C 2  to C 8  alkylene radical characterized by initially heating at a temperature of 150‹ to 300‹ C. substantially equimolar amounts of each of a nitrobenzoic acid and a C 2  to C 8  alkylene or cycloalkylene glycol to form the corresponding hydroxyalkyl-nitrobenzoate then adding an additional substantially molar amount of a nitrobenzoic acid to the reaction mixture, continuing heating the reaction mixture at a temperature of 150‹ to 300‹ C. to produce the alkylene- or cycloalkylene-bis- (nitrobenzoate) and separating the resulting benzoate product from the reaction mixture. Optionally water of reaction may be removed from the reaction mixture. Also part of the invention is a method of producing an alkylene- or cycloalkylene - bis - (aminobenzoate) which comprises reducing to amino groups the nitro groups of an alkylene- or cycloalkylene-bis-(nitro benzoate) according to the invention.
Patent GB-220611-A (GB)
Title: An improved returning mechanism for typewriting machines parts
IPC: B41J7/90
Filed: 1924-07-22
Abstract: 220,611. Polygraphische Ges. Aug. 14, 1923, [Convention date]. carriage-returning mechanism; letter-spacing mechanism.-A device for returning a stop-carriage or other member of a line-printing typewriter of the kind in which the platen is stationary during the setting of the line, comprises a rotatable shaft connected to the member by means of a friction or like clutch: separate friction clutches may be provided for returning members that are advanced unequally, for instance, as applied to the machines described in Specifications 182,908 and 208,106, a stop-carriage, and a scalepointer for indicating the width of the line. A sleeve 7. supported in brackets 2<a>, 2<b>, carries a loose sprocketwheel 17 connected by a chain to a stopcarriage. A shaft 6, mounted in the sleeve and connected thereto by pins 10, 12 passing through slots, is provided with a toothed clutch-member 11 adapted to engage a toothed clutch-member 19 which is frictionally coupled to the sprocket-wheel by means of a leather disc 18, pressed upwards by springs. The shaft 6 is provided also with a collar 9 having inclines cooperating with inclines on a stationary collar 8. The chain unwinds from the sprocket-wheel when the stop-carriage advances. To return the stopcarriage, the sleeve 7 is started, and the collar 9 thereupon rides over the collar 8 and permits a spring 16 to depress the shaft 6 and bring the clutch-member 11 into engagement with the clutch-member 19. When the stop-carriage is arrested, the sprocket-wheel slips and, on completion of a revolution, the shaft is raised by the collar 9, and the clutch-member 11 is released- For returning a second member the clutch and sprocket-wheel may be duplicated, or the shaft 6 may carry a frictionally-coupled collar 13 having teeth which, when the shaft is depressed, engage teeth 22 on a pulley 21, loose on the sleeve 7 and connected bv a cord to the member. The collar 13 is loosely mounted on extension 28 of the shaft, and is pressed, by means of a spring 14, into contact with a leather disc 29. The cord may be wound on a drum gearing with a rack which carries a scale-pointer for indicating the width of the line. Specification 335/03 also is referred to.
Patent GB-841704-A (GB)
Title: Bis-ª‰-s-(2-thio-n-acylimidazolinyl) ethyl ethers
IPC: C07D233/30
Filed: 1957-06-03
Abstract: The invention comprises bis-b -S-(2-thio-N-acly imidazolinyl) ethyl ethers having the general formula:  <FORM:0841704/IV(b)/1> wherein R is a methyl or ethyl group, both Rs being identical. They may be prepared by reacting imidazolidine-dithione at 60 DEG -125 DEG C. with b ,b 1-dichloro diethyl ether, preferably by refluxing the reactants in a 2:1 molar ratio in a solvent such as ethanol, and then either reacting the resulting dihydrochloride of bis-b -S-(2-thio imidazolinyl) ethyl ether with an acetylating or propionylating agent at 75 DEG -175 DEG C. and neutralising the acylated product or neutralising the dihydrochloride and similarly acylating the liberated base.  The acylating agent may be acetic or propionic acid anhydride at acetyl or proionyl chloride or bromide preferably together with an acid acceptor; mixtures of acid anhydride and acid halide may be used.  Examples are given. The ethers may be used in insecticidal compositions (see Group VI).ALSO:In secticidal compositions comprise bis-b -S-(2-thio N-acyl imidazolinyl) ethyl ethers of the general formula <FORM:0841704/VI/1> wherein the Rs represent methyl or ethyl and are identical.  In Examples a dust comprises the N-acityl derivative, kaolin, fullers earth and a wetting agent; a wettable powder comprises the N-propionyl derivative, clay, a dispersant and a water-soluble octyl phenoxy polyethoxy ethanol on magnesium carbonate.  The ethers may be incorporated in fertilizers if desired in conjunction with a finely divided inert extender such as a clay; they may also be applied to soil.
Patent GB-579776-A (GB)
Title: Improvements in or relating to space or distance indicating devices for web handling machines
IPC: B65H45/14
Filed: 1943-10-25
Abstract: 579,776. Feeding webs. GOSS PRINTING PRESS CO., Ltd., and EDWARDS, J. H. Oct. 25, 1943, No. 17560. [Class 100 (i)] [Also in Group XIX] A device for adjusting and indicating the spacing of rollers of a web-handling machine, wherein at least one roller is mounted in a hinged bracket, comprises a rotatable member with threaded portions of different lead cooperating with threaded members associated with the hinged bracket and the fixed frame of the machine respectively, and a drum rotatable with the rotatable member and provided with a helical scale, part of which is framed in an aperture in a fixed surrounding sheath. In Fig. 2, the indicator drum 48 is secured to a screwed sleeve 45 engaging a fixed bracket 46 and pinned to a spindle 43 making threaded engagement with a cross-head 40 with trunnions 41 journalled in a pivoted bearing bracket 37 for the roller of a printing press. The sleeve 45 and spindle 43 have threads of different pitch. A clicker ring 57 on the drum 48 cooperates with a leaf spring 58 on the fixed bracket 46 which also carries a sleeve 50 provided with an aperture for reading the helical scale on the drum. In a modification, Fig. 5, two cross-heads 76, 77 control two hinged bearing brackets 67, 68. The spindle 89 makes threaded engagement with the fixed bracket 84 and carries a feather key 91 engaging a keyway 90 in the screwed sleeve 88. The parts 88, 81, 79, 78 all have threads of different pitch and the numbers on the helical scale indicate thousandths of an inch.
Patent GB-342989-A (GB)
Title: Improvements in or relating to electric hair combs
IPC: A61N1/26
Filed: 1930-06-06
Abstract: 342,989. Electric hair combs. MIGNOT, G. E., 139, Oakleigh Park Drive, Leigh-on-Sea. June 6, 1930, No. 17651 [Class 81 (ii).] In an electric hair comb of the kind having metal teeth arranged in an insulating support, the teeth are mounted on or integral with a metal carrier or carriers, arranged on the support so that one or both ends is or are adapted to project at the end of the support and make electrical contact with a metal cap on each end thereof, the caps being connected to the supply of electricity. In the arrangement shown in Figs. 1 and 3, the support C is a hollow cylinder with an extension H as a handle, formed with two longitudinal grooves for the carrier B. Opposite ends B<1> of the carriers are exposed, the other ends being spaced from the ends of the support. The carriers are retained by moulding round them the material of the support, and may be perforated, so that the moulding material passes through the holes. A battery E is contained inside the support, contact with the teeth being made through metal screw caps D. To obtain a greater potential difference across the teeth, one cap D may carry a tubular extension of conducting material, adapted to contain a battery, which is placed in series with the first battery when the extension is screwed on to the support. To use an outside source of electricity, one cap may contain a conducting rod insulated from the body of the cap, and adapted to make contact with the other cap when screwed on to the support, or one of the external leads may be arranged to contact with the adjacent end of the carrier to which the cap at the opposite end is normally connected. In the modification shown in Fig. 7, the two ends of the same carrier make contact with the caps D, so that a current passes through the carrier. One terminal of the battery may then be connected to the cap D through an electric lamp bulb H, of the kind employed in pocket lamps. A reflector N<1> is provided, which may be part of the cap D, or an extension of the metal part N<2> of the bulb. The current may be broken by a switch or by slightly unscrewing the bulb. A handle of insulating material may be provided.
Patent GB-315080-A (GB)
Title: Improvements in or relating to multiple wire drawing machines
IPC: B21C1/14
Filed: 1928-06-19
Abstract: 315,080. Nachen, W. June 19, 1928. Drawing wire.-A continuous wire drawing machine has the various drawing-drums driven through clutches which are interconnected so that the actuation of any one clutch actuates in a similar manner the clutches of all the preceding drums but leaves the clutches of subsequent drums unaffected. A new length of wire may thus be threaded on the initial dies of the series while the trailing end of the preceding length of wire is being drawn through the later dies of the series. A series of drums 5 - - 8, Fig. 1, arranged vertically or on inclined axes draws wire through dies 1 - - 4 the wire being guided between the dies by guide rollers 9 - - 11 and 90, the lower guide rollers being immersed in a lubricating tank 12. Each drum is formed at its lower ends with a cone ring 23, Fig. 4 adapted to engage with a similar ring 24 constantly driven through bevel-gearing by a longitudinal shaft 25. The spindle 22 of each drum is lifted to disengage the drum by a rod 21 linked to a treadle 14a, spring-held at 91 and adapted to wipe past a pivoted weighted pawl 20a mounted on a bar 19<a> so that the treadle is automatically locked in the disengaged position. On restarting the drum, the pawl is first tripped through actuation of the bar 19<a> by a treadles 30<a> after which both treadles 14a, 30<a> may be allowed to rise together. Each treadle 14<c> -- 17a, Fig. 3, is provided with a projection at the left hand end for actuating- all the treadle on its left hand side. For heavy duty machines power driven gear controlled by the treadles may be used for engaging or disengaging the drawing drums. Such a gear may comprise a constantly reciprocated shaft 40, Fig. 8, carrying forked sleeves 41b which may be angularly moved by the treadle 14b so that the arm 52b engages a lug on a carn sliding on a shaft 36 thereby actuating a roller 40a on the drum-lifting bar 21a. The sliding cams are of such a length that the actuation of any one cam moves all preceding cams which have not been previously similarly actuated. The clutches may be electromagnetically actuated.
Patent GB-152429-A (GB)
Title: Improvements in electric radiators and the like
IPC: F24C7/06
Filed: 1919-07-15
Abstract: 152,429. English Electric Co., and Weaving, R. July 15, 1919. Resistances.-A former for a heating-element for use in a radiator consists of refractory insulating supports mounted on flanges on a reflector or like support and secured by bolts passing therethrough. As shown, the reflector a has. curved flanges b slotted to receive the ends of the supports e, the bolts f being curved and provided with insulating bushing i, or the supports mav be slotted for attachment to the flanges. Resistance wire or ribbon is wound around notches g in the supports. The bolts may form terminals.
Patent GB-1179485-A (GB)
Title: Improvements in and relating to the manufacture of Phthalic Anhydride
IPC: C07D307/60
Filed: 1967-04-18
Abstract: 1,179,485. Phthalic anhydride. CHEMIEBAU DR. A. ZIEREN G.m.b.H. & CO. K.G. 18 April, 1967 [19 April; 1966], No. 17760/67. Heading C2C. In a process for the manufacture of phthalic anhydride by oxidation of an aromatic hydrocarbon where a gas mixture of air and the aromatic hydrocarbon is passed through a multistage, tray type catalysis apparatus provided with a vanadium oxide catalyst, the temperature of the mixture being adjusted to a predetermined level prior to entry into each tray of the said apparatus when necessary by cooling by indirect heat exchange a mixture derived from a previous tray and the process is so conducted that in a first part of the apparatus including a plurality of trays, in which part the oxidation reaction takes place to the extent of approximately 50%, the temperature is allowed to rise by 50‹ to 60‹ C. in each tray and that in the remainder of the apparatus, also including a plurality of trays, the temperature is allowed to rise by less than 50‹ C. in each tray. O-Xylene and naphthalene are specified starting materials.