baber/WOPTO huggingface dataset:
Patent GB-1083374-A (GB)
Title: Improvements in and relating to control systems for intermittent operation of cyclically operable electrical devices
Inventor: FOREMAN ROLAND JOSEPH
IPC: B60S1/08
Filed: 1966-02-01
Abstract: 1,083,374. Windscreen wipers. MOTOROLA Inc. Feb. 1, 1966, No. 4404/66. Heading A4F. [Also in Division H2] Closure of switch 18 renders transistor 25 conductive thereby firing rectifier 3 to energize motor 10 which drives a windscreen wiper. A switch-arm 17 is driven by the motor and is adapted to engage contact 15 to turn off the rectifier, the motor circuit being maintained through switch 16 for the remainder of the wiper cycle, the switch returning to an open position at a predetermined point in the path of traverse of the wiper blade. The interval between wiper cycles is regulated by capacitor 42 which is charged when arm 17 engages contact 15 to render transistor 25 non-conductive. The transistor becomes conductive to initiate a new cycle of operations when the capacitor has discharged through variable resistor 40.
Patent GB-575342-A (GB)
Title: New monoazo dyestuffs
IPC: C09B29/08
Filed: 1944-03-10
Abstract: Monazo dyes are made by coupling diazotised p-nitraniline with the sulphuric ester of an N - alkyl(C1-C8) - N - monohydroxy - straight - chain-alkyl(C2-C6)-aniline, wherein the sum of the carbon atoms of the alkyl and hydroxyalkyl groups is greater than 6 and less than 11 and wherein one meta position may carry halogen atom or a methyl or alkoxy (C1-C4) group. Alternatively the dyes prepared from non-esterified coupling components may be converted to their sulphuric esters by treatment with sulphuric acid or other agent suitable for this purpose.  The products are suitable for dyeing synthetic fibres, e.g. cellulose acetate artificial silk and nylon fibres, wool, natural silk, tin-weighted silk and leather.  The dyeings are dischargeable and the dyes are suitable for printing cellulose acetate artificial silk.  In the examples p-nitraniline is diazotised and coupled with the sulphuric esters of -n-amyl-, -n-hexyl-, -n-heptyl- or -n-octyl-N-b -hydroxyethylaniline, N - ethyl - N - e  - hydroxyamylaniline, N - n - hexyl - N - b  - hydroxyethyl - m - chloroaniline or - m - anisidine, or N - n - hexyl - N - g  - or - n - b  - hydroxypropylaniline; p - nitraniline -->N - n - hexyl - or - amyl - N - b  - hydroxyethylaniline is converted to its sulphuric ester by means of sulphuric acid or of chlorosulphonic acid in a medium of ethylene dichloride.  Other aniline derivatives specified for use in the invention are N-iso.-amyl-N-b -hydroxyethylaniline, N - n - butyl - N - b  - hydroxypropylaniline, N - n - butyl - N - e  - hydroxyamyl aniline, and N - n - hexyl - N - b  - hydroxyethyl - m - toludine.  Specifications 181,750 and 237,739, [both in Class 2 (iii)], are referred to.  N - alkyl - N - e -hydroxyamylanilines specified above are obtained by the hydrolysis of the N-alkyl-N-e -acetoxyamylanilines obtained from alkylanilines and e -chloroamyl acetate.  N - n - butyl- or -hexyl - N - b  - hydroxypropylaniline is obtained by reacting propylene anide with N-n-butyl- or -hexyl-aniline.  Other N-alkyl-N-hydroxyalkylanilines specified above are made by reacting the appropriate primary arylamine with an alkylene halohydrin and subsequently reacting with an alkyl halide.  Sulphuric esters of the above intermediates are obtained by reacting them with chlorosulphonic acid in an inert solvent, e.g. tetrachlorethane or ethylene dichloride.
Patent GB-939384-A (GB)
Title: Processing of uranium-metal-containing fuel elements
IPC: C22B60/02
Filed: 1962-02-06
Abstract: A uranium aluminium alloy (containing a trace up to 1790 of uranium) is refined to produce fresh uranium aluminium alloy by dissolving the initial alloy in a molten mixture of aluminium halide and alkali-metal halide, wherein the alkali metal halide is present in a quantity very greatly in excess of the aluminium halide which is itself present in approximately stoichiometric quantity with respect to the uranium.  A metal phase containing aluminium is separated from a salt phase containing excess alkali-metal halide and an alkali-metal uranium halide.  To this salt phase there is then added sufficient aluminium halide to make the molar ratio of Al to alkali metal approximately equal to one, followed by an excess, with respect to the amount stoichiometrically required for the reduction of uranium halide, of metallic aluminium.  Uranium metal forms and alloys with the excess aluminium present and this alloy is separated from the salt phase.  The temperature of the extractions lies between 600 DEG  C. and a 1000 DEG  C. with a preferred range of 725 \sB 25 DEG  C.  The aluminium to alkali metal molar ratio lies in the range 0.1 to 0.5 in the first extraction and becomes 0.8 to 1.2 with a preferred range of 0.8 to 1.0 for the second extraction.  The halides used are chlorides and bromides, and both extractions are preferably carried out with the exclusion of oxygen.  The process may be used to process irradiated uranium/aluminium nuclear fuel elements (see Group XL (a)).  Specification 870,691 is referred to.
Patent GB-554582-A (GB)
Title: Improvements in or relating to calorimetry and calorimeters
IPC: G01N25/28
Filed: 1942-04-10
Abstract: 554,582. Electrolytic production of oxygen. IGRANIC ELECTRIC CO., Ltd. April 10, 1942, No. 4756. Convention date, April 10, 1941. [Class 41] [Also in Group XX] A cell for the production of pure oxygen for use in a gas calorimeter comprises a tank 142 and cover 143 of non-conducting material. A depending insulating separator 144 surrounds a tantalum electrode 145. A second electrode of lead 147 extends into the electrolyte, preferably sulphuric acid, outside the separator. The electrodes are connected to a source of power as shown the arrangement being that the choice of electrodes and electrolyte produces a rectifying effect to the current. The oxygen generated at the lead electrode passes through a two part chamber 149, by means of goose-necked tubes 155, 156 the chamber being partially filled with acidulated water by inlet 154 the water being maintained at the required depths by the weir pipes 152. Similarly the hydrogen generated at the tantalum electrode is led off by conduit 159 and is preferably burned as shown at the flame 132.
Patent GB-215847-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B61L3/04
Filed: 1923-02-19
Abstract: 215,847. Walker, J. J. Feb. 19, 1923. Staff, tablet, and ticket systems; track-apparatus for stopping trains.-Valves closed by insertion of a token for the section occupied by the train are arranged in series with valves opened by track ramps positioned on the track differently placed in adjacent sections. Fig. 2 shows a trip valve 4, normally closed, but opened by the shoe. 7 engaging the ramp 8, in series with a valve 12 in a branch from the train pipe 1, which is closed against the action of a spring 13 by insertion of a staff 14 in a receptacle 17, arranged to receive only the particular staff. The receptacle 17 is a flat tray capable of receiving three different staffs for closing three valves of which only one can be inserted at any time. Sliding covers obscure the openings for the other staffs. Thus a train entering a section without the proper staff in the receptacle 17 will be stopped by an application of the brakes.
Patent GB-820445-A (GB)
Title: Improvements in and relating to the production of esters
Inventor: DEAN FRED
IPC: C07C69/80
Filed: 1956-02-16
Abstract: Substantially colourless esters are prepared by reacting a carboxylic acid or a carboxylic acid anhydride and a monohydric alcohol at elevated temperature in the presence of a small amount of active carbon and in an inert atmosphere which minimizes the contact of the reactant components with free oxygen.  The inert atmosphere may be carbon dioxide or nitrogen.  The reaction between phthalic anhydride and a mixture of alcohols having 6-10 carbon atoms in the molecule (obtained by the carbonylation of mixed olefins), in the presence of sulphuric acid as catalyst is specified.
Patent GB-1137624-A (GB)
Title: Copolymerization of ethylenically unsaturated monomens with freshly regenerated cellulose
IPC: C08B15/00
Filed: 1966-02-04
Abstract: 1,137,624. Grafting monomers on to regenerated cellulose. SCOTT PAPER CO. 4 Feb., 1966 [15 Feb., 1965], No. 5098/66. Heading C3G. A copolymer of an ethylenically unsaturated compound and cellulose is prepared by a pro-  cess comprising (1) regenerating viscose dope in an acidic regenerating bath to form a regenerated cellulose which has been sufficiently regenerated to enable it to remain insoluble during the subsequent washing and polymerization steps, yet which contains a sufficient number of residual thiocarbonate groups to complete with a peroxidic initiator a redox couple which is strong enough to initiate the subsequent copolymerization of the regenerated cellulose with an ethylenically unsaturated monomer, (2) washing the regenerated cellulose with an ethylenically unsaturated monomer, and (3) reacting the freshly regenerated, thiocarbonate-containing cellulose with at least one polymerizable ethylenically unsaturated monomer in the presence of a peroxidic initiator. The washed regenerated cellulose from stage (2) may be reacted by metathesis with a watersoluble salt prior to being reacted in stage (3). The cellulose copolymer produced is subjected to conventional rayon post-spinning treatments, e.g. desulphuring. In Examples 1 to 5, a viscous dope solution is regenerated by treatment firstly in an aqueous H 2 SO 4 /Na 2 SO 4 / glucose/ZnSO 4  bath and secondly in an aqueous Na 2 CO 3  bath and washed, the resulting filaments being suspended in an aqueous emulsion containing H 2 O 2  and copolymerized therein with (i) styrene and acrylonitrile, (ii) acrylic acid, (iii) ethyl acrylate, (iv) acrylamide, or (v) acrylonitrile. The viscose dope solution in Example 6 is regenerated in an aqueous H 2 SO 4 /Na 2 SO 4  bath and treated with Ca(NO 3 ) 2  solution and the regenerated product obtained is copolymerized with ethyl acrylate by the process of the previous examples. Similarly, in Examples 7 to 16, ferrous, lead, aluminium, magnesium or zinc thiocarbonate salts of regenerated cellulose are prepared and copolymerized with acrylonitrile or methyl acrylate. The regenerated cellulose copolymers produced may be mixed with, e.g. rubber, polystyrene, polyethylene or polyvinyl chloride.
Patent GB-270836-A (GB)
Title: Improvements in, or connected with, electric pushes
IPC: H01H13/02
Filed: 1926-02-23
Abstract: 270,836. Sax & Co., Ltd., J., and Abbott, J. E. Feb. 23, 1926. Press-button switches; switches, quick-make; momentary contact switches, mechanical. - A press button C, which is continually urged upwards by a spring F, carries on its under side an insulated rectangular frame which encircles two contact springs H. A horizontally-placed plate, not shown, normally bears against the head of the button C and holds the latter in an intermediate position in which the contact springs H are disengaged from each other. Depression of the button C or alternatively release of the plate causes the frame to bear on the upper or lower spring H and bring it into engagement with the other spring thus closing the circuit. With the plate disengaged, depression of the button C would first break the circuit and then re-make it.
Patent GB-511572-A (GB)
Title: Improvements in crucible furnaces
IPC: F27B14/14
Filed: 1938-02-18
Abstract: 511,572. Crucible furnaces. HALL, I. Feb. 18, 1938, No. 5111. [Class 51 (ii)] In a tilting crucible furnace a sleeve 42 seated on the top of the crucible extends through the furnace head and the heating-chamber around the crucible is closed off at its upper end, e.g., by a flange 46 on a ring 44, at a level below that of the joint between the crucible and the sleeve so that access of heating gases to the crucible and to the interior of the sleeve is prevented. The ring 44 is supported by an outwardly turned flange 45 from the furnace head, and the heating gases are exhausted through a damper-controlled side flue 20. In a modification, Fig. 4 (not shown), the sealing-ring is seated on the top of the furnace body, and an auxiliary ring supported on the furnace head makes a seal with the sleeve. The pouring spout 47 is sealed to the crucible by a ganister joint, and may be closed by a skimmer slide 48 having an opening for a pyrometer 51. The furnace head is in the form of a hollow ring 24, which serves as a preheater for the air for combustion, and is formed with connections 25 for an inlet pipe and a pipe 27 leading to, a fixed burner 30. On the ends of these pipes are internally-coned collars 39, which are pressed on to complementary seatings 40 by the unbalanced weight of the furnace when in the position shown. Specification 511,573 is referred to.
Patent GB-1374844-A (GB)
Title: Method of and apparatus for investigating the luminescence of optically active molucules
IPC: G01N21/19
Filed: 1972-02-03
Abstract: 1374844 Determining polarization YEDA RESEARCH & DEVELOPMENT Co Ltd 3 Feb 1972 [26 Feb 1971] 5143/72 Heading G2J [Also in Division G1] Apparatus to calibrate a luminescence measuring system in which system the circular polarization of the light is examined (see Group G1) comprises a fused silica plate whose centre is located on the optical axis of the system followed by a quarter-wave plate. The relative positions of the two plates (both of which are rotatable about the optical axis) will determine the degree of cirular polarization and this is calculated from the parameters of the apparatus and used to calibrate the system.
Patent GB-105126-A (GB)
Title: Improvements in Elastic or Resilient Tyres for Road Vehicles.
Inventor: VELDE JOHN FREDERICK VAN DER
IPC: B60C19/00
Filed: 1916-04-07
Abstract: 105,126. Velde, J. F. van der. April 7 1916. Non-metallic elastic bodies and cores. - In tyres of the kind described in Specification 2778/15, the hollow core is fitted with a projecting rim 7, Fig. 1, 15, Fig. 2, which fits the wheel rim, so that the core is positioned centrally therein independently of the outer cover.
Patent GB-439144-A (GB)
Title: Improvements in or relating to upright piano actions
IPC: G10C3/16
Filed: 1935-02-18
Abstract: 439,144. Pianofortes. TRIUMPH AUTO PIANOS (1930), Ltd., SAFFELL, F. H., and HOPKER, A., 189, Regent Street, London. Feb. 18, 1935, Nos. 5245, 5646, and 7847. [Class 88 (ii)] In a miniature upright pianoforte, having the entire action below the keyboard 11 and in front of the strings 14, the movement of the hammer-actuating jack 35 is amplified in comparison with that of the playing key 11 at its point of connection with the linkage, whereby playing keys shorter than the standard may be used. Three different arrangements are shown, in each of which tuning from above the keyboard is possible. In Fig. 1, the movementamplification is obtained by means of a lever 28, pivoted at one end 27 and linked at its free end to the wippen 34, the lever being operated at the point 29 by a metal crank 22, adjustably secured to the key 11. The over- or under - damper 23 is operated by a trip - finger 26 on the key. Adjustable set-off buttons 40, 41 are provided for regulating the upward movement of the jack and wippen. Single-, bi- or tri-chord frames may be used, and in the case of a bi-chord, the action-rail 16 may be linked to the soft pedal so as to be given a slight longitudinal movement by the latter, whereby each hammer only strikes one string, to facilitate tuning. In Fig. 2, the wippen 34 is directly operated by a lever 43 connected by a link 45 with the key 11. The underdamper 23 is operated by a spoon 47 on the wippen, upward movement of which is limited by a fixed set-off rail 46. In Fig. 3, the key 11 is directly linked to the wippen 34 at a point intermediate its pivot and the jack 35. An adjustable set-off button 41 limits downward movement of the wippen, which latter is connected by a wire 56 with the damper 23. Figs. 1 and 2 show the usual check and bridle 32, 32<a>, but in Fig. 3, the check is formed on the jack and engages an overhanging pad 33 carried by the hammer. The action may be played automatically.
Patent GB-781945-A (GB)
Title: Bromtetracycline
IPC: C07C233/00
Filed: 1954-07-26
Abstract: A new antibiotic bromtetracycline is produced by growing a bromtetracycline-producing strain of Streptomyces aureofaciens in an aqueous nutrient medium containing at least 50, and preferably not more than 1500, parts per million of bromide ions and not more than 50, and preferably 10, parts per million of chloride ions. The S. aureofaciens is a chloride-scavenging strain.  The fermentation is submerged aerobic, the temperature 25 DEG  to 35 DEG  C. and the pH 5 to 8.5.  The medium contains (a) assimilable carbon, e.g. sucrose, starch and dextrin; (b) assimilable nitrogen, e.g. ammonium sulphate, ammonium phosphate, amino acids such as d,l-alanine, l-arginine, d,l-methionine, l-glutamic acid, l-histidine and d,l-beta-asparagine and natural proteinaceous materials; (c) inorganic salts, e.g. potassium phosphate and magnesium sulphate; (d) trace metals, e.g. copper, zinc, manganese, iron and chromium; (e) buffers, e.g. calcium carbonate, citrates, acetates and lactates.  Chloride ions may be removed from the medium by means of sequestering agents or treatment with ion exchangers.  It is preferred, however, to use a synthetic medium substantially free of chloride and containing potassium bromide.  Bromtetracycline is isolated along with some tetracycline which is coproduced by acidifying the broth at pH 3 or less, filtering and (a) adding an alkaline earth metal salt at pH 6.5 and extracting the precipitate so formed with acidified water or with a water-miscible solvent such as an alcohol, alkoxy alkanol or ketone, (b) extracting with a water-immiscible organic solvent, e.g. n-butanol, chloroform and ethyl acetate alone, or as such with the further addition of a water-soluble salt such as an ammonium, amine or alkali metal halide or sulphate; (c) adjusting to pH 8 to 11 and adding a quaternary ammonium salt especially an alkyl trimethylammonium chloride or a dialkyl dimethylammonium chloride wherein the alkyl group contains 8 to 18 carbon atoms. The quaternary ammonium salt is purified by treatment with water and chloroform and extraction of the chloroform layer with aqueous acid of pH 1 to 2.5, the extract then being adjusted to pH 3 to 7. Bromtetracycline has the formula <FORM:0781945/IV (a)/1> It is amphoteric, forming salts with (a) acids, e.g. hydrochloride, hydrobromide, sulphate, borate, nitrate, phosphate, ascorbate, citrate, succinate, acetate, sulphamate, and (b) bases, e.g. calcium, barium, strontium, magnesium, ethylene diamine, triethylamine, piperidine, potassium and lithium, and (c) boric acid.  Infra-red absorption spectrum is given.
Patent GB-625304-A (GB)
Title: Improvements in connecting a portable sewing-machine, with free work support, to furniture into which it can be lowered
IPC: D05B75/06
Filed: 1947-02-25
Abstract: 625,304. Sewing-machines. BRUTSCH, A. MULLER-, and BRUTSCH, L., (trading as BRUTSCH & CO.). Feb. 25, 1947, No. 5426. Convention date, March 15, 1946. [Class 112] A sewing-machine 1 having a free work arm 2 is connected to a stand 4 by means enabling it to be set in either of two work positions, or in an inoperative position in which it is lowered into the stand. In the upper work position the work arm is unobstructed by the stand, and one edge of the machine base 3 is supported by a hinged flap 6 whilst the opposite edge is supported by upstanding links 11. In the lower work position the top of the work arm is level with the stand top, and one edge of the base rests on a bracket 7 on the flap whilst the opposite edge is supported by the depending links 11. In this latter position a filler may be inserted in the aperture around the work arm. In the inoperative position the machine is supported by the depending links 11 and stops 14, 15. The machine may be removed from the stand by unscrewing the nuts 8. In a modification the links 11 are replaced by slotted guides having two stop positions. In a further modification the machine is supported by four slotted guides and in this construction the machine remains vertical in all positions.
Patent GB-469138-A (GB)
Title: Process for the production of patterns on textile fabrics
IPC: D06M15/03
Filed: 1936-02-24
Abstract: Fabric containing raw cellulose-containing yarn and also yarn rendered creaseproof by treating with formaldehyde or the like and heating, according to Specification 455,472, is bleached and subjected to the action of swelling agents, whereby pattern effects are produced.  The swelling agent may have shrinking or parchmentizing powers, e.g. caustic soda or dilute sulphuric acid. The creaseproof yarns may be of natural or artificial fibres.  The fabric may be subject to direct or reserve printing before the swelling treatment; local cr<\>zepe effects may be obtained, and local dyeing effects, since the dyeing properties of the treated yarns are modified.  In examples: (1) raw yarns are woven as a foundation together with creaseproof yarns as above, and the raw yarns opened by boiling; the fabric is bleached and shrunk for 3 mins. without tension with soda lye of 37 DEG  B<\>ae. at room temperature, washed, soured, washed and finished; (2) as in example 1 up to the bleaching, the fabric is then mercerized under tension, soaked, treated with sulphuric acid of 54 DEG  B<\>ae. for about 8 secs. at 10 DEG  C., washed, mercerized under tension, dyed and finished; (3) as in example 1 up to bleaching, then printing with a gum reserve, treating with sulphuric acid of 54 DEG  B<\>ae. for 8 secs. at 10 DEG  C. for transparency, washing off gum reserve, 3 mins. shrinking with soda lye of 37 DEG  B<\>ae., washed, soured and finished; the transparent portions form embossings, and the effect yarns in the non-transparent parts are cr<\>zepe like. Specification 453,836 also is referred to.
Patent GB-1091467-A (GB)
Title: Improvements in gutter fittings
Inventor: EDMONDSON RONALD
IPC: E04D13/068
Filed: 1963-04-09
Abstract: 1,091,467. Roof gutter fittings; clamp fastenings. PLASTIERS Ltd. May 5, 1964 [April 9, 1963], No. 5624/65. Divided out of 1,090,291. Headings E1W and E2B. A length of guttering 10 is secured to the trough shaped body 2 of a gutter fitting 1 by a strap 11 formed by two arcuate members 12, 13, the member 12 having an end lug 15 and a second lug 16 spaced therefrom, which second lug can be brought into use by cutting off the part of the strap carrying the lug 15 when it is desired to reduce the size of the strap, and the member 13 having an end lug 18 which is secured by a bolt 22 to either the lug 15 or 16. More than two spaced lugs may be provided on the member 12. The end of the guttering 10 may be located on the concave or convex sides of the body 2, and the overlapped edges of both the guttering 10 and body two are embraced by hook shaped lugs 14, 17 at each end of the strap 11. The strap may be moulded from synthetic plastics material.
Patent GB-220248-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/18
Filed: 1923-05-05
Abstract: 220,248. Bentley, P. A., and Goddard, J. W., (trading as Bentley Engineering Co.). May 5, 1923. Circular machines.- Splicing mechanism, applicable to machines of the type described in Specifications 15008/00, 24290/12, and 171,483, comprises a trough 7, along which the splicing yarn 4 passes from an eye 9, fitted with a spring- pressed transversely slidable trapper 12 carrying a bolt 11. The rounded end of a lever 13 controlled by the pattern drum contacts with the bolt 11 when splicing is to be done, and lifts the trough 7 so that the yarn 4 is pressed hard up to the main yarn 3, whereupon an inclined cut-away surface 15 on the lever 13 comes against the bolt 11 and allows the trough to drop slightly and push back the bolt sufficiently to release the trapped yarn. A further forward movement of the lever 13 allows the trough to fall to normal position, the bolt 11 being still held out by the face of the lever 13. When the lever is moved counter-clockwise the bolt 11 is released to trap the splicing yarn.