baber/WOPTO huggingface dataset:
Patent GB-1385922-A (GB)
Title: Preparation and use of 4-5a zeolite
IPC: C30B33/00
Filed: 1972-01-27
Abstract: 1385922 4-5A-Zeolite Y YATSURUGI T KURATOMI and T TAKAISHI 27 Jan 1972 [31 March 1971 2 Oct 1971] 3936/72 Heading ClA [Also in Division C5] Zeolites with characteristics between those of 4A and 5A zeolites is prepared by contacting an A-type zeolite with K ions and Zn ions to allow exchange with ion-exchangeable cations in the A-type zeolite, the concentration of the zinc and the potassium ions in the solutions being such that 16À7 to 33À3% of the ion-exchangeable cations in the zeolite is replaced by K ions and 66À7 to 83À3% is replaced by Zn ions, equilibrium having been reached. The K and Zn ions may be contacted simultaneously or separately and the initial zeolite may be of a Na-A type. The K and Zn ions may be supplied as a solution of the chloride or nitrate. The resulting zeolite may be used for the separation of substances which are not adsorbed by Na-A type zeolites but are adsorbed by Ca-A type zeolites. Diborane may be isolated using a 4-5A zeolite with 75% Zn ions and 25% K ions. Arsine and phosphine and mono-silane are also adsorbed well. Germane may be isolated or separating cis- 2-butene and trans-2-butene using a 4-5A zeolite with 68% Zn ions and 32% K ions.
Patent GB-1222391-A (GB)
Title: Improvements in or relating to gas-cushion craft for operation over water
Inventor: TATTERSALL EDWARD GUNSTON
IPC: B60V1/00
Filed: 1968-01-25
Abstract: 1,222,391. Gas cushion vehicle. HOVERMARINE Ltd. 22 Jan., 1969 [25 Jan., 1968], No. 3958/68. Heading B7K. A gas cushion craft for operation over water is provided with cushion-containing means arranged so that the craft-supporting cushion, when viewed in plan, has a wide forward portion relative to a narrow rearward portion, the sides of the rearward portion extending substantially parallel to each other. In a preferred form the craft 50 is a rigid sidewall craft for operation over water and the plan form shape (Fig. 5) is intended to ensure stability, particularly in a turn. The forward part of the cushion area may be circular, semicircular or other arcuate profile arranged with substantially parallel sidewalls 5a which form the lateral cushion boundary in the rearward area. The cushion in the forward area is bounded by a two stage inflatable flexible skirt composed of an upper arcuate part, to which are attached contiguous U-section elements 6a, and at the rear by a bag skirt formed of an upper inflatable bag 21 at the bottom of which is connected two oppositely facing and mutually co-operating rows 20 of flexible skirt members similar to elements 6a. The forward portion of the craft may have a load carrying turntable (Figs. 6, 7, not shown). Reference has been directed by the Comptroller to Specification 1,141,602.
Patent GB-607560-A (GB)
Title: Improvements in or relating to receivers for time modulated signal pulses
IPC: H03K9/04
Filed: 1946-02-08
Abstract: 607,560. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. Feb. 8, 1946, No. 3985. Convention date, Feb. 19, 1945. [Class 40 (v)] Pedestal pulses which simultaneously gate a valve supplied with time-modulated signal pulses and convert the signal pulses to amplitude modulated pulses are produced by combining rectangular pulses of recurrence frequency equal to the unmodulated signal pulses and an oscillatory wave of the same frequency or a harmonic thereof. In one embodiment a receiver for push-pull time-modulated pulses comprises a mixer 1, I.F. amplifier 2, detector 3, amplifier-clipper 5 and low-pass filter 7 feeding the A.F. amplifier 8 and reproducer 9. Pulses in the output of circuit 5 are fed to circuits 11 and 12, the former of which selects the pulse recurrence frequency in a crystal or other filter 13 to synchronize a pulse generator 16 through adjustable phase shifter 15. Circuit 12 selects an odd harmonic of the pulse recurrence frequency in filter 18, the phase of which is adjustable in circuit 20. The rectangular pulses 17, curve C, Fig. 2, from generator 16, and wave 19, curve D, are combined and clipped in circuit 21 to produce the sloping- topped pedestal pulses 22, curve E. When these pulses, suitably phased, are added to the output of detector 3, curve A, in the clipperamplifier 5 the resultant wave, curve E clipped at level 31, produces an amplitude-modulated pulse output 33, curve F, having the modulation envelope 34 of the original modulating signal, and free from interference. A switch 24 is provided so that the pedestal pulses may alternatively be added to the I.F. signal in amplifier 2.
Patent GB-1135380-A (GB)
Title: Improvements in or relating to teletypewriters
IPC: B41J7/62
Filed: 1967-01-27
Abstract: 1,135,380. Selective printing. SIEMENS A.G. 27 Jan., 1967 [28 Jan., 1966], No. 4106/67. Addition to 1,027,764. Heading B6F. The subject-matter of this Specification is similar to that of Specification 1,135,379 but the claims are directed to the construction of the epicyclic gear character selection mechanism.
Patent GB-1026663-A (GB)
Title: Method and apparatus for removing a strip of coating from a pre-coated web
Inventor: FORREST JOHN LLOYD
IPC: G03C7/24
Filed: 1963-02-01
Abstract: 1,026,663. Treating coated film. GENERAL ANILINE & FILM CORPORATION. Feb. 1,1963 [Feb. 7, 1962], No. 4242/63. Heading G2C. A clean strip is wiped from a web of material such as a coated film by passing the film in one direction, and passing in the other direction a string or ribbon moistened with cleaning liquid, and causing the string to bear against the film. In the form shown, the invention is used to remove a narrow strip of the antihalation layer on the back of a motion picture film along each edge, to prepare it for the addition of a magnetic stripe for sound recording. In the arrangement of Fig. 5, the film 10, having the light-sensitive coating 12 on one side and the antihalation coating 14 on the other side, is passed over a series of rollers 46, 48, 50, 54, 52. A pair of strings 56, 57 pass through a tank 60 where they are wetted, by being brought into contact with a saturated wick, with a solvent solution for removing the back coating 14. The wetted strings are passed through a guide 66 and round a grooved roller 68, which holds them in contact with the film strip 10, the strings and the film movigg in opposite directions. The dimensions are arranged so that the strings wipe a clean path through the back coating to provide a narrow bared strip along each edge of the film, on which the magnetic stripe is later laid. In Fig. the strings are replaced by belts 33, 35, passing round upper rollers 30, 34 and lower rollers 40, 38. The belts are wetted directly by passing into a bath of the solvent liquid. The upper rollers are fixed to a shaft 28, which also carries between them a freely running roller 32 over which the film 10 passes, moving in a direction opposite to that of the belts. The spacing is such that each belt wipes clean a narrow strip along the edge of the film.
Patent GB-788347-A (GB)
Title: N-aminoalkyl substituted 6,8-dimethyl-5- or 7-halogeno-1, 2, 3, 4-tetrahydro-quinolines
Inventor: KOLLING HEINRICH
IPC: C07D215/18
Filed: 1956-02-10
Abstract: The invention comprises compounds of the general formula: <FORM:0788347/IV (b)/1> (wherein X represents hydrogen or one or more lower (1-3C) alkyl groups, one Y represents hydrogen and the other halogen, R represents a straight or branched alkylene group of at most 4 carbon atoms and R1 a primary, secondary or tertiary amino group), and the preparation thereof in accordance with the following examples: (1) 6 : 8-dimethyl-5-chloro-1 : 2 : 3 : 4-tetrahydroquinoline is heated with b -diethylaminoethyl chloride to produce 6 : 8-dimethyl-5 - chloro - N - b  - diethylaminoethyl - 1 : 2 : 3 : 4-tetrahydroquinoline, which is converted to its hydrochloride by the action of HCl in alcohol; similarly prepared are the corresponding b -piperidinoethyl, b -diethylaminoisopropyl and b -hexamethyleneiminoethyl compounds and their hydrochlorides; (2) the 7-chloro compounds corresponding to the first, second and fourth of the foregoing products are similarly prepared from 6 : 8-dimethyl-7-chloro-1 : 2 : 3 : 4-tetrahydroquinoline; (3) 2 : 6 : 8-trimethyl-5-chloro-1 : 2 : 3 : 4 - tetrahydroquinoline and b  - diethylaminoethyl chloride similarly yield 2 : 6 : 8-trimethyl - 5 - chloro - N - b  - diethylaminoethyl-1 : 2 : 3 : 4 - tetrahydroquinoline.  Further meanings specified for R1 are pyrrolidino, piperazino and morpholino.  Reference is also made to alternative processes analogous to those described in the parent Specification.  The products are useful for treating schistosomiasis. Starting materials.  6 : 8-Dimethyl-5- and 7-chloro - 1 : 2 : 3 : 4 - tetrahydroquinoline (the hydrochlorides of which are described) are prepared by catalytic hydrogenation of the corresponding quinoline compounds, the picrates of which are described and which are themselves obtainable by the Skraup synthesis from respectively 2 - and 6 - chloro - 4 - amino - 1 : 3-xylene, or, in the case of the 5-chloro compound, also by the Sandmeyer reaction from 6 : 8-dimethyl - 5 - aminoquinoline.  2 - Chloro - 4-amino-1 : 3-xylene is obtainable from 2-amino-4-nitro-1 : 3-xylene by the Sandmeyer reaction followed by reduction of the nitro group. 2 : 6 : 8 - Trimethyl - 5 - chloro - 1 : 2 : 3 : 4 - tetrahydroquinoline (the hydrochloride of which is described) is prepared by catalytic reduction of 2 : 6 : 8 - trimethyl - 5 - chloroquinoline, the picrate of which is described and which is obtainable from 4-amino-6-chloro-1 : 3-xylene and crotonaldehyde, or by the Sandmeyer reaction from 2 : 6 : 8 - trimethyl - 5 - aminoquinoline (obtained by reduction of the corresponding nitro compound and characterized as its acetyl derivative).
Patent GB-570798-A (GB)
Title: New or improved device for use in the sharpening of twist drills
IPC: B24B3/24
Filed: 1944-03-09
Abstract: 570,798. Sharpening drills. SENIOR, T. March 9, 1944, No. 4353. [Class 60] The drill is mounted in a chuck on a spindle driven by hand and given a variable longitudinal reciprocation by the engagement of cams on a disc thereon with a fixed abutment, the cams being formed by levers, the inclination of which can be varied by the engagement of pins thereon with cam tracks on a second disc circumferentially adjustable with respect to the first. The spindle e is mounted in a headstock c and carries the chuck f. The levers m, n forming the cams are mounted in recesses in the disc and are furnished with pins m<2>, n<2> engaging cam surfaces r<1>, r<2> on the ring r adjustable relatively to the disc j. A rest is provided for positioning the drill comprising a V-member b mounted on the base a and fitted with a removable setting plate d.
Patent GB-536404-A (GB)
Title: Improvements relating to means for connecting a tractor to a trailer
IPC: B60D1/14
Filed: 1939-10-27
Abstract: 536,404. Tractor-drawn implements. JENNINGS, H. W. K. (Le Tourneau, Inc., R. G.). Oct. 27, 1939, No. 4392/41. Divided out of 536,374. Drawings to Specification. [Class 68 (i)] [Also in Group XXXII] Means. for connecting a tractor to a trailer, such as an earth excavating scraper, comprises a frame or draft unit which is provided rearwardly with preferably pivotal connection to the trailer, and forwardly with vertically spaced eyes or the like which can turn about horizontal axes. One of the eyes is pivoted to a rigid part of-the tractor and the other to a draw bar pivoted below the tractor wheel axis about an axis intersecting the wheel axis. The eyes are pivoted with vertical play on king pins extending between the ears of devices on the tractor. The arrangement may be as set out in the abridgment of Specification 536,374.
Patent GB-904321-A (GB)
Title: Improvements in slide projectors
IPC: G03B23/18
Filed: 1960-02-08
Abstract: 904,321. Slide projectors. CARRILLO, N. Feb. 8, 1960 [Feb. 9, 1959], No. 4430/60. Class 97 (1). A pair of slide projectors, projecting on a common screen area, have extending between and through them a slide track, along which slides from an adjacent magazine are fed singly, and alternately, to each projector by a reciprocating slide-advancing member, the operating means for which also serve to simultaneously decrease the current in one projector lamp while increasing it in the other. The slide change in any one projector occurs when its lamp is dark. As shown in Figs. 1, 3 and 4, a stack of slides, stored in a tray between the projectors, is resiliently urged against a slide track comprising a vertical apertured backing plate and resilient pressing bars 84, the edge of the leading slide being engaged by a pusher bar 98 which is movable in either direction by the engagement, between a pair of rearwardly extending vertical flanges integral therewith, of a V-bent lever 118 pivotable on spindle 124 by right or left movement, as desired, of a control handle 108, 110 extending through a slat in the lever 118 and pivoted at a universal joint 112. Rotation of knob 110 will cause an electrically conducting shoe 114 (see Fig. 7) to slide over the windings of a rheostat 28, connected as shown between the mains and the two projector lamps, whereby increase of current in one lamp is accompanied by a decrease of current in the other. Fig. 9 shows a circuit for electrical operation of the slide-changing means by solenoids 152, 154, which are alternately energized as the sliding shoe 142 reaches the zero-current position for the corresponding lamp and forms a circuit via contacts 156 or 158.
Patent GB-392679-A (GB)
Title: Improvements in vacuum brake apparatus for railway vehicles
IPC: B60T13/46
Filed: 1932-02-15
Abstract: 392,679. Fluid-pressure brakes. CONSOLIDATED BRAKE & ENGINEERING CO., Ltd., RAWLINGS, V. P., and BURMAN, C. S., Windsor Works, Slough, Buckinghamshire. Feb. 15, 1932, No. 4459. [Class 103 (i).] A " dead man's " valve for vacuum brakes comprises slow acting pneumatic means, set in operation on the release of the " dead man's " pedal, which opens the emergency valve only after a predetermined movement and time interval, which movement is stopped if the pedal is depressed within this time interval, thus preventing application of the brakes in order to allow the driver to move across the cab to observe signals &c. When the driver releases pedal 5 valve 36 opens and admits air through restricted orifice 37 to a chamber 28 above a diaphragm 30, then through a restricted passage 35 to a chamber 29 below the diaphragm 30 and through a restricted orifice 34 to a chamber 20, from which it is drawn through non-return ball valve 21 by the vacuum in the train pipe. The restricted orifices are so dimensoned that pressure will build up in the chamber 28 and diaphragm 30 is slowly depressed until stem 31 opens valve 24 to admit air directly to the chamber 20 to actuate diaphragm 19, to close valve 13 connecting the driver's valve to the train pipe and to open valve 14 connecting the train pipe to atmosphere. If the driver depresses the pedal 5 before the valve 24 is opened application of the brakes is prevented. Near the end of the movement of the stem 31, the end of the passage 35 is closed by the bush 32, so that pressure rises quickly in the chamber 28 and the spindle moves rapidly to open the valve 24. Spring catch 45 maintains the valve 24 open until depression of pedal 5 releases the catch by means of an incline 48 on a rod 49. In a modification the pistonrod of a dashpot passes through an aperture in a lever operating the valve 24 and is connected to the pedal 5. When the pedal is released the piston of the dashpot rises slowly under spring pressure against the pressure of air escaping through a restricted orifice, until a collar on the piston rod engages the valve operating lever and opens the valve. A different arrangement of this modification is also shown. The dead man's pedal may be duplicated so that the valve can be operated from another part of the driver' cab. The valve 36 may be opened by a spring and held closed by a solenoid the circuit of which is closed by depression of the pedal or a button on the driver's controller handle, and also a button at the other side of the cab.
Patent GB-1137004-A (GB)
Title: Stapling machine
IPC: B31B50/68
Filed: 1966-02-02
Abstract: 1,137,004. Stapling machines. W. S. KIPPAX, and H. G. KIPPAX. 2 May, 1967 [2 Feb., 1966], No. 4511/66. Heading B4C. A stapling machine for stapling together articles, such as the sides of cardboard boxes, comprises a stapling head 9 carried by an operating arm 12, means 19, 20, 55, 56 for effecting movement of the operating arm between a stapling position C and a retracted position A and means 69 for limiting the movement of the arm to an arc between the stapling position C and a partly retracted position B. The operating arm 12 is connected to the piston rod 19 of a pneumatic cylinder 20 which joined to a second cylinder 55 whose piston-rod 56 is connected to a frame member 58. In the inoperative position shown the arm is raised to permit easy positioning of a box on an anvil 7. Upon operation of a foot-actuated valve 69, air is fed to the cylinder 55 to first lower the arm to the partly retracted position B and then feed air to the cylinder 20 intermittently via control valves 83, 89, 95 in order to move the arm from the position B to the stapling position C. In a modification the operating arm is connected by a link (24, Fig. 1) to a foot pedal (35) which is prevented from moving beyond the position (B), during stapling, by means of a spring-loaded lever (42) having a pin (50) adapted to engage a cam 53. When it is required for the operating arm to be returned to the fully retracted position A, the lever (42) is pivoted by means of a pedal (43) so that the pin (50) clears the cam and so allows the foot pedal (35) to rise.
Patent GB-1111024-A (GB)
Title: ª-hydroxy-ª-alkoxypropionic acids,and the preparation thereof
IPC: C07C59/125
Filed: 1967-01-30
Abstract: The invention comprises a -hydroxy-b -alkoxy-propionic acid and salts thereof which are prepared by heating a mixture of a salt of a glycidic acid, an alkanoate and an alkanol.  The salt obtained is separated and the acid prepared therefrom, e.g. by acidification. Alkali metal, and calcium or zinc salts of glycidic acid may be used and alkanoates of alkanols with an unbranched chain of more than 6 carbon atoms are preferred.  The acids and salts therefrom may be used as emulsifiers or working agents. Compounds derived from alkanoates with an odd number of carbon atoms and a branched chain may be added to polymers, and those from lower alkanols may be used in the paint industry. Examples describe the preparation of a  - hydroxy - b  - octoxypropionic, - b  - decoxypropionic, - b  - dodecoxypropionic, - b  - tetradecoxypropionic and -b -hexadecoxypropionic acids.
Patent GB-1167282-A (GB)
Title: Electric Circuit Arrangement for Measuring the Absorption Component of Nuclear Magnetic Resonance
Inventor: PETRICEK VACLAV
IPC: G01R33/36
Filed: 1968-01-30
Abstract: 1,167,282. Nuclear magnetic resonance spectrometers. CESKOSLOVENSKA AKADEMIE VED. Jan.30, 1968, No.4676/66. Heading G1N. [Also in Division H3] In an N.M.R. spectrometer, a constant current r.f. source 1 is connected to a series resonant circuit 2 comprising a coil 3 surrounding the sample 4 and a trimmer capacitor 5, and the output of a phase-sensitive rectifier 11 controls the capacitance of a circuit 8 connected in parallel with the capacitor 5 to maintain the resonance frequency of resonant circuit 2 equal to the frequencing of source 1 while this is swept through the resonance spectrum of the sample whereby an N.M.R. absorption spectrum may be obtained substantially free from distortion due to dispersion. The circuit shown in Fig.2 also comprises an amplifier 9, rectifier 12, D.C. amplifier 13 and an evaluation circuit 14, for example an integrator. The r.f. source 1 may be frequency modulated or the resonance frequency of resonant circuit 2 may be modulated, a rectifier (15) and modulation frequency amplifier (16) being included in the circuit between amplifier 9 and phasesensitive rectifier 11 and a reference signal of adjustable phase being fed from the modulation frequency source (18) to the phase-sensitive rectifier. As shown in Fig. 5, circuit 8 comprises coupling capacitors 26, 27, voltage-dependent capacitor 28 and blocking resistors 22 to 25.
Patent GB-1155532-A (GB)
Title: Dimerisation of Olefines
Inventor: SAMPSON ROY JOHN
IPC: C07C2/30
Filed: 1967-02-01
Abstract: 1,155,532. Dimerizing olefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 Jan., 1968 [1 Feb., 1967], No. 4824/67. Heading C5E. Olefins are dimerized or co-dimerized in the liquid phase at not more than 100‹ C. with a catalyst comprising a transition metal or transition metal compound on an oxide support in the presence of an alkyl or alkyl halide of a Group I to Group IV element, preferably an aluminium trialkyl or an aluminium alkyl halide. The catalyst is preferably a Group VIII metal oxide or halide supported on SiO 2 , Al 2 O 3 , ZrO2, B 2 O 3 , TiO 2 , MgO or combinations thereof. The liquid phase may be provided by the olefin to be dimerized or by a paraffin solvent. Examples describe the dimerization of propylene with a NiO catalyst in the presence of AlEt 3  and Al 2 Et 3 - Cl 3  and the co-dimerization of propylene and iso-butene with a NiO catalyst in the presence of AlEt 3 .
Patent GB-511498-A (GB)
Title: A process for the de-waxing of oils
IPC: C10G73/30
Filed: 1938-02-16
Abstract: 511,498. Centrifuges. AKTIEBOLAGET SEPARATOR-NOBEL. Feb. 16, 1938, No. 4844. Convention date, Feb. 18, 1937. [Class 23] [Also in Group III] Wax-oil mixtures are separated in a centrifuge from the bowl of which the oil is discharged through a variable outlet to a pipe 10 fixed to the bowl, whereby a static oil column is generated balancing the pressure on the wax outlet. The variable outlet may be a disc 8 adjustable radially, or a skimming tube having an adjustable opening. The bowl is provided with separator discs 2, a top disc 4, and an inlet 5 preferably having a constant feed device. The fixed oil discharge pipe 10 may have an additional throttle 13, consisting of a spring-loaded valve, or a constant volume discharge pump.
Patent GB-816742-A (GB)
Title: Tubular fluorescent lighting fitting
Inventor: BATE FRANK
IPC: F21S8/00
Filed: 1957-02-13
Abstract: 816,742. Lighting fittings for fluorescent lamps. REVO ELECTRIC CO. Ltd. Feb. 5, 1958 [Feb. 13, 1957], No. 4882/57. Class 75(4) A lighting fitting for an elongated fluorescent lamp comprises an enclosure 6 completely enclosing the lamp, at least the underside of the enclosure being transparent or translucent and having louvres 8 detachably connected thereto on the exterior. The louvres are of plastic material and have on their top edge side-shouldered studs 9 which are engaged in apertures 10 on the transparent or translucent underside of the enclosure by temporarily flexing the louvres to shorten the distance between the studs. The enclosure 6 may be of plastic with the sides rendered opalescent or coloured and it is mounted by separate end cap members 7 on to a body part 5 carrying the fluorescent lamp and ancillary gear. The Provisional Specification also describes an arrangement in which the top edges of the louvres each have bevel-headed studs divided by cuts into four tongues which deflect to allow these studs to be entered into a line of holes along the mid-line of the underside of the enclosure; small auxiliary studs enter other holes in the underside of the enclosure to prevent angular movement of the louvres.