baber/WOPTO huggingface dataset:
Patent GB-1311634-A (GB)
Title: Acylamidosulphenyl chlorides and chlorothiocarbamoyl chlorides
IPC: C07D521/00
Filed: 1971-06-09
Abstract: 1311634 Sulphenamides CHEVRON RESEARCH CO 9 June 1971 [12 June 1970(2)] 19787/71 Heading C2C Compounds of formula RN(SCl)COY, in which R is C 1-10 -alkyl or C 3-10 -cycloalkyl, both optionally substituted by chlorine or bromine, and Y is hydrogen, chlorine, or C 1-10 -alkyl or C 3-10  cycloalkyl, both optionally substituted by chlorine or bromine, or R and Y together form a C 3-5 -linear alkylene group are prepared (a) when Y is other than chlorine, by reaction of a compound RNHCOY with sulphur dichloride or (b) when Y is chlorine, reaction of an isocyanate RNCO with sulphur dichloride. The insecticide m-sec-butyl-phenyl-N-(N<SP>1</SP>-methylacetamidothio)-N-methyl-carbamate is prepared by reaction of N - methyl - acetamido - sulphenyl chloride with m-sec-butyl-N-methyl-carbamate. The herbicide N - methyl - N - (2 - chlorocyclohexylthio) - N<SP>1</SP> - phenyl urea is prepared by reaction of N methyl-N-chlorothio-carbamoyl chloride with cyclohexene to give the corresponding S-cyclohexyl compound, and reacting this with aniline.
Patent GB-581237-A (GB)
Title: Improvements in aircraft landing elements
IPC: B60C11/22
Filed: 1944-10-13
Abstract: 581,237. Pneumatic tyres. DOWTY EQUIPMENT, Ltd., and BOUND, R. H. Oct. 13, 1944, No. 19849. [Class 144 (ii)] The pneumatic tyres 8 of a twin-wheel aircraft landing element are maintained in communication through a pressureequalization pipe 10 extending through the fixed hollow axle 1. As shown, the pipe 10 is supported in bushes 11, 12 and connected through pipes 15, 17 and branches 9L, 9R to the valves or valve-stems of the tyres. An inflation-valve 13a is provided on a banjo fitting 13 at one end of the pipe 10.
Patent GB-813313-A (GB)
Title: Polymerizing organopolysiloxanes
IPC: C08K5/17
Filed: 1955-07-08
Abstract: Heat polymerizable siloxanes containing Sibonded unsubstituted alkyl, aryl or aralkyl radicals are polymerized by mixing with polyamines and heating the resulting mixtures to at least 100 DEG  C. The polyamines used have the formula R.NH2, wherein R is an alkyl, aryl, aralkyl or alkaryl radical having as substituent an NH2- or A(R1NH)xgroup, R1 being an alkylene, arylene, alkarylene or aralkylene radical, A being H-, NH2- or R-, and x being an integer from 1 to 10. Solvents may be used for effecting admixture of the siloxane and polyamine. In examples, methyl-, ethyl-, phenyl-, methylphenyl- and methylethyl-siloxane resins and rubbers are polymerized by heating with tetraethylenepentamine, triethylenetetramine or diethylenetriamine.  Uses.-As pressure - sensitive adhesives, impregnants, coatings and films.
Patent GB-169959-A (GB)
Title: Improvements relating to injectors
IPC: F04F5/46
Filed: 1921-07-25
Abstract: 169,959. Schopp, N. Oct. 5, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Conveyer apparatus, injector; overflow arrangements.-To permit the replacement of those parts of diffusers most subject to wear, the combining- cone, to which steam is supplied by annular and central nozzles 1, 2, is formed of two screwthreaded portions 7, 8, having annular overflow gaps 9, 10, 11, communicating with the overflow outlet 5, and the delivery cone is in two parts 12, 13, of which the part 13 is removably held in the other and constitutes the throat and smaller portion of the cone. The main portion 12 of the delivery cone is formed with a converging part preceding the usual diverging part, and to the converging part the exterior of the smaller portion 13 of the cone conforms, so that small inaccuracies in its position or shape may be neglected. The length of the smaller portion is such that the mixed fluids pass through a converging area for a short distance before entering the principal diverging space of the main portion.
Patent GB-598386-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F3/28
Filed: 1945-08-03
Abstract: 598,386. Valve circuits. HADFIELD, B. M. Aug. 3, 1945, Nos. 19968/45, 35332/45 and 867/46. [Class 40 (v)] A resistor is included in the cathode lead of a valve having at least four other electrodes, the D.C. potentials being such that over a certain region the current changes associated with two of the electrodes are of opposite sense. The voltage drop across the cathode resistance R1, Fig. 3 (19968/45) is neutralized by biassing batteries Eg and Esp to give the control and suppressor grids potentials which allow the valve to conduct normally. A positive going signal, applied to the grid causes the cathode current to increase, the rise in cathode potential relative to the suppressor grid diverting parts of the cathode current from the anode to the screen grid, the changes in the anode and screen currents operating a relay XI. The grid lead may be returned to a tapping on the cathode resistance, Fig. 4 (not shown). The action may be made cumulative by feeding back from the screen grid to the suppressor grid, Fig. 6 (not shown), over a potentiometer or from the anode to the control grid, Fig. 8 (not shown). When used as an amplifier, Fig. 1 (35332/45), a push-pull output may be taken from the anode and screen grid and a low impedance output from the cathode, the input being applied either to the control or suppressor grid. A feedback circuit between anode and control grid may. be employed, Fig. 2 (not shown). The circuit may also be used as a squarewave generator, Fig. 4 (867/46), capacitor C9 being charged and discharged over rectifiers MR2, MR1 and the associated part of resistance R35. By employing a tuned circuit L3, C11 in the anode lead, Fig. 6, a sinusoidal output may be obtained or a capacitor-resistor network may be utilized between appropriate electrodes, Figs. 5, 7 and 8 (not shown).
Patent GB-183823-A (GB)
Title: Improvements in and relating to obtaining mineral oils from bituminous rocks
IPC: C10G1/02
Filed: 1922-07-21
Abstract: 183,823. Kern, L. July 27, 1921, [Convention date]. Non-conducting coverings for heat and sound.- In the distillation of shale and similar materials the shale is ground and briquetted and the briquettes are uniformly and slowly heated to at least 700‹ C., and, after the bitumen has been driven off, air is passed into the retort and heating continued to about 1050‹ C., the result being a porous product suitable for insulating purposes or as a substitute for kieselguhr. The ground shale may be mixed prior to distillation with peat, sawdust, or the like, and with substances which yield acids, such as chlorides, more particularly magnesium chloride, the acids acting on the bitumen to shorten the process.
Patent GB-1037913-A (GB)
Title: Improvements relating to roof supports for mine workings
IPC: E21D23/00
Filed: 1963-01-29
Abstract: 1,037,913. Advancing mine roof supports. K. M. GROETSCHEL. Jan. 29, 1963 [Nov. 10, 1962], No. 20041/64. Divided out of 1,037,911. Heading E1E. The subject matter of the present Specification is the same as that of the parent Specification but the claims differ.
Patent GB-492550-A (GB)
Title: Improvements in apparatus for making measurements on multichannel carrier telephony systems
IPC: H04J1/16
Filed: 1937-07-20
Abstract: 492,550. Telephone transmission measurements. GENERAL ELECTRIC CO., Ltd., FARREN, L. I., and WESTELL, E. P. L. July 20, 1937, No. 20080. [Class 37] Cross-modulation and other measurements on multi - channel carrier telephony systems employing artificial voicemicrophone apparatus avoid the simultaneous application of signals of maximum amplitude to all of the channels by employing a single generator supplying a number of phase-shifting networks which produce the same attenuation but different phase-shifts. The parts 1-5 comprise respectively, a source of A.C. voltage, square-wave generator and harmonic equalizer, band-pass filter of audio-frequency range, weighting network that is preferably a constant resistance unit, and an amplifier. The amplifier output is fed to a number of parallel-connected phase-shifting networks 6 ... 8 and thence to a mixer 9 which permits any one of the networks 6 . . . 8 to be connected to any channel. Where a large number of channels exists, some of the signals supplied can have the same phase. The phase-shifters 6 . . . 8 are preferably of the constant resistance type. Specification 389,917, [Group XL], is referred to.
Patent GB-912402-A (GB)
Title: Electrically heated vapour spray generator
IPC: B08B3/02
Filed: 1959-06-11
Abstract: 912,402. Heating liquids by electricity. HOMESTEAD VALVE MANUFACTURING CO. June 11, 1959 [Dec. 12, 1958], No. 20106/59. Class 39 (3). [Also in Groups XXIII and XXIX] In apparatus for generating a stream of vapour and liquid spray at the boiling-point of the liquid a pump 24 driven by an electric motor 52 draws a liquid from a tank 7 through a conduit 23, and pumps it through a conduit 27 and coils 32, 34, 36 containing electric heating elements 54, 55, 56, and thence through a conduit 37 and a hose 38 to a discharge gun 40, and a thermostat 39 is provided to de-energize the electric heaters should the temperature of the liquid flowing through the coil 36 exceed a certain value, and also to energize the heaters when the liquid temperature falls below a certain value. When the apparatus is to be used for cleaning purposes the liquid may be a detergent or soap solution supplied to the tank 7 in concentrated form from a reservoir 11. In the event of overheating of the fluid in the conduit 37 a fusible plug 44 is melted to allow the fluid to escape to the atmosphere.
Patent GB-422958-A (GB)
Title: Improvements in or relating to cables loaded with inductances for the transmission of electrical signals
IPC: H01B11/16
Filed: 1933-07-18
Abstract: 422,958. Loaded cables. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, TURNER, H. C., and POLGREEN, G. R., c/o Salford Electrical Instruments, Ltd., Silk Street, Salford. July 18, 1933, Nos. 20263 and 20957. [Class 36] A loaded signalling - cable, particularly for high frequency working, comprises a conductor having preformed collars of magnetic material spaced along its length, at distances less than one hundredth of the wave-length of signals transmitted. The magnetic material preferably consists of finely divided magnetic particles which are insulated from one another and are consolidated by a binder and pressure into a rigid body. In the construction shown in Fig. 1, pre-formed magnetic collars 2 are pressed on a solid conductor 1 which is carried within a tubular sheath or outer conductor 4 of wound copper tape. The sheath 4 may be lapped with a bitumen-coated tape and enclosed in a lead sheath. The conductor is centred within the sheath 4 by star-shaped insulating rings 3 which are moulded around the collars 2. In a modified construction the collars are cylindrical so that the insulating rings may be threaded over them. Fig. 3 shows a construction in which, to avoid the difficulty of fixing collars on a stranded conductor 5, loose sleeves 6 of magnetic material are threaded on the conductor and are spaced apart by insulating washers 7 which may also serve to centre the conductor 5 and to support the outer conductor 8. In a further modification the magnetic collars are secured to a stranded conductor by adhesive. Specifications 353,472 and 406,705 are referred to.
Patent GB-478434-A (GB)
Title: Improvements in filters
IPC: B01D33/00
Filed: 1936-07-22
Abstract: 478,434. Filters. CAMPBELL, R. C. July 22, 1936, No. 20275. [Class 46] An inward-flow rotary drum filter has one end projecting through the wall of the tank containing the liquid to be filtered and the filtrate is discharged directly near the periphery of the drum from the filtrate space or channels within the filtering-medium. Filtrate is discharged from filter sections formed by longitudinal ribs 6 at the periphery of a rotary drum 1 through passages 10 in a rim 8 at one end of the drum. This end of the drum which projects through the wall 20 of the tank 12 is supported by a spider 4 from a trunnion 5. The trunnion 5 extends through the walls 30, 31 of a filtrate reservoir and is supported by a bearing 33. The other end of the drum is supported by a plate 2 from a trunnion 3, passing through the end 15 of the tank 12, supported by a bearing 17 and provided with a driving pulley 19. The passages 10 deliver filtrate from the immersed filter sections directly into the filtrate reservoir. As each section rises from the liquid the end of its passages comes under an arcuate suction box 35 connected by a barometric tube 41 to the lower end of the filtrate reservoir. The box 35 is held against the end face of the rim 8 by springs 45. A jet of water may be directed into the box 35 to assist the suction. Alternatively a fan may be connected to the upper end of the suction box for removing air. Joint is made between the rim 8 and the end 20 of the tank 12 by means of a leather band 23 the tension of which can be adjusted. Any liquid leaking at this position is collected in a chamber 27 and returned to the tank 12. A filtrate reservoir and suction box 35 may be provided at each end of the drum.
Patent GB-442264-A (GB)
Title: Improvements relating to droppers for collyrium or other liquids
IPC: B65D1/08
Filed: 1935-07-16
Abstract: 442,264. Bottles &c. ; stoppers. GUILLAMON, F. A., 3, Plano de S. Francisco, Murcia, Spain. July 16, 1935, No. 20299. Convention date, March 12. [Classes 125 (i) and 125 (iii)] A glass phial for delivering eye drops and the like has an outlet 4 formed as a length of capillary tube with a constricted portion near the outer end to form the outlet when the phial is opened. A conical glass cover 5 is used to protect the outlet from contact with air. The contents are forced out by the warmth of the hand acting on air in the phial.
Patent GB-1331816-A (GB)
Title: Benzyl starch emulsion coating composition
IPC: D21H19/54
Filed: 1971-04-19
Abstract: 1331816 Benzyl starch PENICK & FORD Ltd 19 April 1971 [26 Jan 1970] 20343/71 Heading C3U [Also in Division B1] A bubble coating composition for paper, paper board and boxboard comprises an oil-in-water emulsion of which the aqueous phase contains, as a combination binder and emulsifier, benzyl starch containing 2 to 20% by weight of etherlinked benzyl groups. The emulsion typically contains 5-40% by weight of starch particles based on the weight of water, the weight ratio of oil to water is between 0À1 : 1 and 1À0 : 1, and the ratio of oil to benzyl starch between 0À1 : 1 and 10 : 1. The particles of starch and oil have average sizes less than 2 microns and less than 10 microns, respectively. The paper &c. is coated with the composition and the coating is dried at a temperature in the range 150-350‹ F. whereby the water and/or oil is/are removed. However, it is preferred that the oil be less volatile than water. The term " oil " covers hydrocarbon oil such as kerosene, fuel oils, mineral spirits, Stoddard's solvent and low melting fat or wax. The coating composition may include pigments such as clays and titanium dioxide imparting brightness and opacity. The starch is etherified in granular form with benzyl chloride in the presence of alkali and a swelling inhibitor such as sodium sulphate or sodium chloride. The resulting benzyl starch is dispersed by fragmentation or cooking, e.g. in a steam cooker. The degree of dispersibility can be enhanced by incorporating a small amount of alkali in the starch slurry while it is being cooked. High starch concentrations can be achieved through lowering the viscosity by acid hydrolysis or oxidative conversion with ammonium persulphate.
Patent GB-595718-A (GB)
Title: Automatic temperature or pressure control apparatus for operating electric switches
IPC: H01H35/26
Filed: 1944-10-20
Abstract: 595,718. Thermal switches. ROBERTSHAW THERMOSTAT CO. Oct. 20, 1944, No. 20385. Convention date, Nov. 2, 1943. [Class 38(v)] ,In a snap acting thermostat for controlling temperature or pressure automatically, an expansible liquid is stored in a bulb 42 connected by a capillary 40 to a capsule 38, which upon expansion causes the button 44 to swing the U-shaped lever 48 about the knife-edge bearing 52. The lever 48 is joined to the bottom of spring 56, the top of which is hooked over the centre arm of the R-shaped control lever 60, which is borne at is lower extremities by knife edge bearings 65, and supports rearwardly an inverted V-shaped take up arm 74 which carries a contact bridge on. each arm and insulated from it, co-operating with fixed contacts, one of which is 96. When the lever 48 is pushed across a line joining points 52 and 65, the contacts snap open, and conversely when the capsule contracts. A pointer 28 in conjunction with a calibrated scale 26 sets the device to operate at a predetermined temperature by means of the screw 30 which extends through the cover 14 to make contact with the capsule 38. A safety device to open the circuit if the main contacts should stick, comprises a secondary lever 116 carrying a contact bridge 110 insulated from it, co-operating with series contacts 102 and 104, which are opened at a fixed temperature difference above the pre-set operating temperature by the spring 120 when the lever 48 is sufficiently forced over to the right in the Figure to cause the lower end of lever 116 to be disengaged from the frame 10. A manually operated button 138 enables the lever 116 to be returned to its normal latched position in which contacts 102, 104 are closed.
Patent GB-1188364-A (GB)
Title: Quinoline Derivatives
Inventor: DAVIS MICHAEL
IPC: C07D215/54
Filed: 1967-05-02
Abstract: 1,188,364. Anticoccidial compositions. MAY ' & BAKER Ltd. 1 May, 1968 [2 May, 1967], No. 20400/67. Heading A5B. [Also in Division C2].  Pharmaceutical compositions having use in the prevention of coccidiosis in chickens and anti-viral activity and containing compounds of the general formula: wherein R' is a saturated or unsaturated straight chain aliphatic group having 7 to 11 carbon atoms, R 1 , is a saturated or unsaturated straight or branched chain aliphatic group having 1 to 4 carbon atoms, R 2 , is methyl, ethyl, isopropyl, n-propyl, or allyl group, at least one of R', R 1 , and R 2 , being an unsaturated group as specified above, and R 3  is hydrogen or a saturated or unsaturated carboxylic acyl group, and, when R 3  is hydrogen, salts thereof are administered orally or parenterally in association with a physioligically innocuous carrier and/or physiologically innocuous wetting and/or dispersing agents. The compositions suitable for the prevention of coccidiosis may also contain one or more additional prophylactic or therapeutic agents, e.g. anti-bacterial agents such as furazolidone, or coccidiostats, such as 2-chloro-4- nitrobenzamide, pyridine-3-sulphonamide, nitrofurazone or sulphaquinoxaline. Also they may contain other substances known to be useful in promoting the growth of poultry or their egg production for example, 4-hydroxy- 3-nitrophenylarsonic acid and antibiotics such as penicillin and penicillin derivatives.
Patent GB-681711-A (GB)
Title: Improvements in or relating to the production of alkane disulphides and/or alkane thiols
IPC: C07C321/14
Filed: 1949-08-05
Abstract: A process (a) for the production of an alkane disulphide and/or an alkane thiol comprises reacting an alkane disulphide with an alkane thiol having an alkyl group which is different from at least one of the alkyl groups of the alkane disulphide reacted therewith, whereby an intermolecular exchange of alkyl groups is effected and a process (b) for the production of an alkane disulphide comprises reacting an alkane disulphide with another alkane disulphide having at least one alkyl group different from both of the alkyl groups of the alkane disulphide reacted therewith, in the presence of an alkane thiol whereby an intermolecular exchange of alkyl groups is effected.  If none of the products in process (a) are removed the proportions of unsymmetrical and new symmetrical disulphides formed will be determined by the equilibrium conditions of the system but if the alkane thiol formed is removed high yields of the new symmetrical disulphide will be produced in general in preference to the unsymmetrical disulphide.  The alkane thiol formed may be removed by continuous fractionations during the reaction.  In process (b) when reacting two different symmetrical alkane disulphides in the presence of an alkane thiol to give the unsymmetrical disulphide, the alkane thiol preferably has an alkyl group in common with an alkyl group of one of the disulphides reacted.  In general either of the processes may be carried out in an aqueous or alcoholic medium, ethanol and an alkaline medium being preferred.  The reaction may be carried out at room temperature but elevated temperatures are preferred, e.g. the reaction may be carried out at the boiling-point of the reaction mixture under reflux.  The products are generally separated by fractional distillation.  The process has application in the conversion of alkane thiols or disulphides to materials of different boiling point enabling their removal from other compounds of similar boiling point.  In examples: (1) 3,4-dithiahexane, 2,2-dimethyl-3,4-dithiahexane (ethyl-tert.-butyl disulphide) and 2,2,5,5-tetramethyl-3,4-dithiahexane-(di-tert.-butyl disulphide) are produced by refluxing a solution of diethyl-disulphide and tert.-butyl mercaptan in aqueous ethyl alcohol containing potassium hydroxide, removing the ethane thiol as it is formed and fractionating the mixture of reaction products; (2) 6 - methyl - 3,4 - dithiaheptane (ethylisobutyl disulphide) is prepared by refluxing a solution of di-isobutyl disulphide, 3,4-dithiahexane and ethane thiol (ethyl mercaptan) in aqueous ethyl alcohol containing potassium hydroxide and isolating the desired product and residual starting materials.
Patent GB-1305306-A (GB)
IPC: H01H43/12
Filed: 1970-04-29
Abstract: 1305306 Time switches MALLORY TIMERS Ltd 29 April 1970 [5 May 1969] 20509/70 Heading H1N A timer having first and second programming cams rotatably driven about a common axis at different speeds has one cam driven by the other via an intermittent advance mechanism sandwiched between the cams, each cam having a hub and at least one hub having a recess to receive at least a portion of said intermittent drive mechanism. As shown, a synchronous motor 12 drives a cam drum 20 by means of reduction gearing and pinion 34. Cam drum 20 is loosely journalled on a fixed shaft 18<SP>11</SP> secured to a mounting plate 14, and a second cam drum 22 is secured by knurling 30 to a shaft 18<SP>1</SP> coaxial with shaft 18<SP>11</SP> and journalled on an extension 19 thereof and at 28 in another mounting plate 16. A plate 46, pivoted at 50, lies between the cam drums 20 and 22 and is urged anti-clockwise (Fig. 4) by a constant force spring 56. A roller 52 on one side of plate 46 co-operates with a snail cam 40 integral with cam drum 20 to oscillate the plate 46 whereby a pawl 44, extending on the other side of plate 46, steps cam drum 22 by engaging ratchet teeth 84 formed inside a recess 22<SP>11</SP> therein. Both cam drums operate a plurality of contact sets 38.
Patent GB-317200-A (GB)
Title: Improvements in or relating to optical slits such for example as are used in recording sound
IPC: H01J65/04
Filed: 1928-07-14
Abstract: 317,200. Gramophone Co., Ltd., and Browne, C. O. July 14, 1928. Vacuum tubes. - A discharge lamp for use in recording sound, has a projection with two inclined surfaces, 2, 3 forming at their intersection an optical slit. The surfaces are ground at right angles to each other, and the edge is ground to form a flat slit, light being totally reflected internally from the inclined surfaces. Check pieces 4, 5, over which a photographic film 8 runs, may form an electrode so as to concentrate the glow near the slit. The inclined surfaces may be of metal coated as described in Specification 309,676, [Class 97 (i), Optical systems &c.]. In a modification the angle between the inclined surfaces is such that total internal reflection is not produced, the width of the slit being determined by the gap between the cheeks. In another arrangement a pressure block, bearing on the film, acts as an external electrode.