baber/WOPTO huggingface dataset:
Patent GB-675298-A (GB)
Title: Improvements in and relating to the production of polyamides
IPC: C08G69/10
Filed: 1949-05-20
Abstract: Fibre-forming polypeptides are made by polymerizing one or more anhydrocarboxyamino acids of the general formula <FORM:0675298/IV (a)/1> R1, R2 and R3 being hydrogen atoms or alkyl, aryl or aralkyl groups, which may be substituted or unsubstituted, in a solvent which does not contain active hydrogen atoms and which is a solvent for both the acid and the polypeptide, the polymerization being effected in the presence of an initiator having an active hydrogen atom, and the proportion of the initiator being such that the molecular ratio of the initiator to the acid is 1 : at least 350.  Copolymeric peptides may be made, e.g. by polymerizing mixtures of the acids, preferably in equimolecular quantities, in the presence of the initiator or by p  first polymerizing one acid alone in presence of the initiator and then adding a second acid and continuing the polymerization which may be effected at ordinary (20 DEG  C.) or raised (50 DEG  C.) temperatures.  Solvents specified are: nitrobenzene, anisole, acetophenone and methylenechloride. Initiators specified are water, primary and secondary amines and phenols, e.g. N-(amino-acetyl)-dimethylamine, N - (a  - amino - b  - phenylpropionyl) - dimethylamine and sarcosinedimethylamide. In one example anhydrocarboxy - dl - b  - phenylalanine and the g -methylester of anhydrocarboxy-l-glutamic acid were dissolved in nitrobenzene containing N - (amino - acetyl) - dimethylamine, and allowed to stand at 50 DEG  C.  The resulting gel was triturated with petroleum ether and the precipitate filtered off, washed and dried. Further examples are given in which one or more of the acids used are selected from those given in the above example and the a -benzyl ester of anhydrocarboxy-l-glutamic acid, the g -benzyl ester of anhydrocarboxy-dl-glutamic acid, anhydrocarboxy-dl-leucine, dl-norleucine, -dl-isoleucine, -dl-valine, -dl-norvaline, -glycine and -a -aminoiso-butyric acid, and the g -methyl ester of dl-glutamic acid.  Specification 675,299 is referred to.
Patent GB-1040974-A (GB)
Title: Compatible single-sideband transmission
IPC: H03C1/60
Filed: 1965-03-31
Abstract: 1,040,974. Single-sideband modulators. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 31, 1965 [April 7, 1964], No. 13610/65. Heading H3R. A compatible single-sideband modulator for generating a signal having an envelope which reduces, upon subsequent square law detection, to a replica of the modulating signal comprises a circuit 30 for subtracting from the modulating signal those components which would distort the square law detection. The signal is then shifted in frequency and a carrier added. The error signal to be subtracted may be derived by feeding the modulating signal to a frequency shifter 24 and then detecting in a square law detector 26. It is shown that the resulting output, weighted by a factor equal to the inverse of the amplitude of the carrier to be subsequently added, is the desired error component. For better correction, a number of correction units 10 may be connected in cascade, Fig. 3 (not shown). In a modification, Fig. 4 (not shown), a single frequency shifter 12 is used, part of its output being fed back to square law detector 40 and subtracter 44.
Patent GB-1130921-A (GB)
Title: Isotope method for determining mercury in the air
Inventor: MAGOS LADISLAUS
IPC: G21H5/02
Filed: 1965-03-31
Abstract: 1,130,921. Detecting mercury. NATIONAL RESEARCH DEVELOPMENT CORP. June 24, 1966 [March 31, 1965], No.13756/65. Headings G1A and G1B. Metallic mercury present in a gas stream is detected by passing the stream through a liquid reagent comprising a solution containing divalent mercury as a complex salt e. g. mercuric acetate complexed with sodium or potassium chloride or bromide, or complexed with an organic complexing agent, e.g. ethylenediamine tetra-acetic acid, and labelled with a radio-active species of mercury, whereby radio-active mercury is released into the gas stream by exchange reaction, thereafter passing the gas stream through a suitable absorbent e.g. a mixture of copper oxide and manganese oxide or potassium permanganate, and measuring the "Y" radio-activity of the absorbent at regular intervals using a scanning scintillation counter. The vapour from the radio-active reagent is labelled to the same specific activity as that of the reagent and provided this is known, a quantitative estimation may be effected. Also, if desired, calibration may be carried out using a sample containing mercury at a known concentration.
Patent GB-272030-A (GB)
Title: Improvements in internal combustion engine
IPC: F02B25/00
Filed: 1926-06-01
Abstract: 272,030. Kellie, J. G. June 1, 1926. Two-stroke-cycle engines; four-stroke-cycle engines; pumps for combustible mixture; cylinders, arrangement of ports in and pipes for; valves.- In a super-compression engine the cylinders are isolated from the crank chamber by partitions, through which the connecting-rods pass, and additional charges are supplied to the combustion chambers from the crank chamber which is charged with combustible mixture by a fan or blower. The Figure shows the application to a radial-cylinder, two-stroke cycle engine in which the normal charge, induced through a branched pipe 16 from a carburettor 15, and compressed between the pistons 8 and partitions 10, passes through transfer passages 6 to the combustion chambers. The super-charge is drawn into the crank chamber by a blower 20, geared to the main shaft, and transferred to the combustion chambers by passages 24 which are parallel to, and may be integral with, the passages 6; these passages 24, 6 end in ports which are uncovered simultaneously by the piston. The pipe connecting the blower 20 to the carburettor 15, or an additional carburettor, includes a non-return valve 17, a pressure-release and extra-air valve 18 and a throttle valve 19. The valve 17 comprises a rod 17<a> normally held in the position shown by a spring 17d but adapted to be moved by a Bowden wire to bring a loose disc 17b against a seating 17<c>. The valve 18 comprises spring- pressed slidable cylindrical members having apertures which may be brought into register by excessive pressure in the pipe or a Bowden control. The partitions 10 each comprise a conical member having a spherical surface and piston-ring 11, which is movable in a spherical socket in the base of the cylinder, and a spherical socket 12 in which is mounted a ball-shaped member 13, having a similarly-surfaced piston-ring and a hole through which the connecting-rod slides. When the invention is applied to a four-stroke cycle engine, the partitions prevent the pressure in the crank chamber from acting on the piston and the supply of super-charge from the crank chamber is regulated by mechanically-actuated poppet valves which are opened and closed slightly later than normal inlet valves. In the case of twostroke cycle engines, the supercharge may also be supplied through mechanically-actuated poppet valves.
Patent GB-808924-A (GB)
Title: Improvements in or relating to electrical time delay apparatus
IPC: G05B11/01
Filed: 1956-05-04
Abstract: 808,924. Automatic voltage control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 4, 1956 [May 10, 1955], No. 13825/56. Class 38 (4). [Also in Group XXXIX] In an automatic tap-changing system for regulating the voltage of an A.C. supply, in which response to transient fluctuations is eliminated by introducing a time delay, the delay is effected by an auto-self-excited bridge rectifying transductor with a long timeconstant circuit to energize a control winding. The transformer tap changer 2 is actuated by a reversible motor 47 controlled by relays 41, 43. Relay 41 is energized via a time delay transductor MA1 when a lower limit voltagesensing relay 9 drops out and connects a signal voltage of one polarity from rectifier 21 to the control windings of the transductor, and relay 43 is similarly energized via a time delay transductor MA2 from a signal voltage source 25 of opposite polarity by an upper limit relay 13. A no-volt relay 11 normally maintains contacts 19 closed. The transductor MA1 is biased by a winding BW1 to provide minimum output in the absence of a signal on at least two other control windings. The control signal voltage from 21 is applied directly to one control winding AC1 to prepare the transductor for conduction. The signal also charges a capacitor 91 through a resistor 33 until after the desired delay a neon tube 93 conducts and momentarily energizes a second control winding MC1. The combined effect of the two windings MC1, AC1 saturates the transductor which, due to selfsaturation and positive feed-back winding PF1 conducts heavily to energize the relay 41. The feed-back winding PF1 also serves to maintain conduction in the absence of a continuing signal in winding MC1. As the tap changer operates, a cam 61 opens contacts 55 to de-energize winding AC1 and so render the transductor again non-conducting, and closes contacts 57 to discharge capacitor 91. The motor then continues to run under undisclosed control to complete the tap change cycle and also reset contacts 55, 57 ready for the next cycle of operation. The operation of transductor MA2 is identical in respect of control signals of opposite polarity.
Patent GB-587128-A (GB)
Title: Improvements in or relating to articulated joints for silent type chains and silent type chains including the improved joints
IPC: F16G13/04
Filed: 1944-07-19
Abstract: 587,128. Driving-chains. MORSE CHAIN CO. July 19, 1944, No. 13845. Convention date, July 22, 1943. [Class 24] In a silent type chain having a pintle C and a co-acting apertured link, the link aperture and the. cross section of the pintle have a contour formed of a segment concentric to the axis of the pintle and two inwardly converging straight line portions, the segmental portion of the aperture being of longer arc than that of the pintle so that limited rotating movement may occur between the pintle and the link. Links jointed with pintles as above may alternate with links in which the cross section of the pintles coincide with the link apertures and thus no rotation is permitted in these links.
Patent GB-811548-A (GB)
Title: Improvements in frames for beds or the like
IPC: A47C19/00
Filed: 1957-05-01
Abstract: 811,548. Mattresses &c. frames. HELLER, M. May 1, 1957, No. 13847/57. Class 52(4) The upper frame a of a bed or couch which carries a mattress surface of tensional elements is stiffened by inclined struts e carried by spaced rails d, or by a solid member of equivalent width, in the lower frame.
Patent GB-611805-A (GB)
Title: Improvements in and relating to drilling jigs
IPC: B23B47/28
Filed: 1946-05-08
Abstract: 611,805. Drilling; making drilling-jigs. SUTTON, W. E. May 8, 1946, No. 13848. [Classes 83 (ii) and 83 (iii)] A drilling-jig is formed by registering drilling- bushes 13, Fig. 2, with one or more holes 17, of the same size as those of the bushes, in a subsidiary jig 15, itself set from holes 4 or bushes 2 in the main jig carcase 1 which are or remain accurate, and then securing the said bushes to the carcase. The bushes may be registered with accurate or oversize holes in the carcase. " Pad " bushes without shanks, as illustrated, may be registered directly with accurate holes 4 by means of pegs 11, Fig. 1. A drilled workpiece may be used as a jig carcase. The bushes may be notched for attachment by welding or by pins or screws.
Patent GB-1027586-A (GB)
Title: Improvements in or relating to electrical ignition systems
Inventor: MAYCOCK WILLIAM HENRY
IPC: F02P15/00
Filed: 1964-04-03
Abstract: 1,027,586. Ignition systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 8, 1965 [April 3, 1964], No. 13856/64. Heading F1B. A condenser discharge ignition system comprises a plurality of parallel connected spark gap discharge devices 14, 16 the operating characteristics of which are so related that only one of the devices is effective at any one time the devices automatically becoming effective one at a time as the breakdown voltage of the device actually in use increases due to ageing. As shown a trembler coil 5 is employed in the charging circuit of the condenser 11 but the invention can be applied to units which are transistorised or working from A C supplies The Specification refers to spark gap device containing radio active material.
Patent GB-113413-A (GB)
Title: Accouchement Corset-binder.
Inventor: WARING ANNE
IPC: A61F5/03
Filed: 1917-09-28
Abstract: 113,413. Waring, A. Sept. 28, 1917. Abdominal belts; stiffeners. - An accoutrement belt or binder consists of four single pieces A, B, C, D of linen, flannel, or the like, connected together at the back by two laces J, K, at the front by usual busk fastenings 2, 5, and at the sides by lines of stitching. The busks at the front are placed in end pockets formed by lines of stitching H' one inch long at the top and bottom, and are retained therein by buttons 1 and buttonholes 1<1> on a strengthening-strip 6 and on the turnedover edge H respectively. A projecting strip of material 4 may be secured in a pocket in the left edge to form a busk-protector.
Patent GB-705139-A (GB)
Title: Improvement in centrifugal mixer
IPC: B01F27/94
Filed: 1952-06-03
Abstract: 705,139. Mixing appliances. PREMIER MILL CORPORATION. June 3, 1952 [June 11, 1951], No. 14023/52. Class 86 A centrifugal mixing device comprises a rotor for immersion in the materials being mixed, the rotor having an upper mixing chamber open at the top and a lower mixing chamber open at the bottom, the two mixing chambers being in communication with each other and only one of the mixing chambers having side openings. In Fig. 1 two frusto-conical cups 28, 30 are secured upon a sleeve 22 which is in turn mounted upon a rotary shaft 12 of an electric motor 14 (not shown). The cups 28, 30 have opposed open ends 36, 38 and juxtaposed bases 32, 34 having registering openings 42, 44 which constitute passageways through which communication is provided between the cups 28, 30. Outlet openings 50 are formed in the side wall of the lower cup. A pair of vanes 68 may extend diametrically across the cups. In operation materials from the top and bottom of a tank in which the mixer operates, are drawn into the openings 36, 38 and mixed in the cups, the material in the cup 30 then passing downwardly through the openings 42, 44 for admixture with the material in the cup 28, the combined mixture then being thrown out through the side openings 50. In several alternative constructions, Figs. 3, 4 and 5 (not shown), the two cups may be formed integral with each other, in that they have a common base part, and the volume of the lower cup may be made larger than the upper cup by forming it with an upper cylindrical portion, Figs. 4 and 5, in which the outlet openings are formed. In Fig. 6 the cup 136 is rotatably adjustable with respect to the cup 132 so that the cross section of the passage provided by the holes 144, 148 may be adjusted. In Fig. 7 (not shown) the electric motor which drives the mixer is swivellysupported by a bracket mounted on the side wall of a mixing tank. In Fig. 8 separate ingredients are fed to the upper and lower cups by pipes 60, 62, the resulting mixture flowing from the tank 66 through an outlet 64. The invention may be used for mixing liquids, pastes and powders.
Patent GB-953952-A (GB)
Title: Improvements in and relating to the analysis of gas mixtures
Inventor: LUFT KARL FRIEDRICH
IPC: G01N30/74
Filed: 1962-04-11
Abstract: 953,952. Gas-analysis using infra-red or ultra-violet radiation. BERGWERKSVERBAND G.m.b.H. April 11, 1962, No.14029/62. Heading G1A. The invention relates to apparatus for the radiation absorption analysis of substances contained in a non radiation absorbing carrier gas and comprises two gas-tight chambers of equal size each having a radiation permeable window, means for dividing a gas stream into two equal streams each of which enters a different one of the chambers, means for intermittently irradiating the windows with radiation such as infra-red or ultraviolet, and means for measuring the resultant change thereby caused in the condition of the gas in the chambers. In the embodiment shown a carrier gas emerging from a chromatographic column 1 passes in equal portion down two identical capillary tubes 2 through two measurement chambers 4, 5 each provided with radiation permeable windows 3. Radiation from a radiation source 8 falls on each of the chambers 4, 5 in turn by the action of a rotary shutter 9 so that the chambers receive radiation of equal amplitude and spectral composition but of different phase and the resulting periodic heating and cooling of the gases in the chambers is measured in known manner as the resultant pressure difference by membrane condensers 10 connected to amplifiers 11 and recording device 12. That part of the apparatus to the left of the chain dotted line is maintained at a higher temperature than that part on the right to enable gases having high boiling points to be measured. This temperature difference is maintained by the use of a pneumatic bridge consisting of two capillaries 14 through which pure carrier gas is forced and two outlet capillaries 6 leading to an exit 7 through which pure carrier gas is emitted. The pressure difference in the chambers is conveyed to the condensers 10 by two tubes 13 having poor heat conducting properties. In a further embodiment (Fig. 1 not shown) there is no temperature difference between the parts of the apparatus and the pneumatic bridge is replaced by a half bridge comprising two capillaries, one from each of the chambers, connected to an exit tube. In another embodiment (Fig. 3 not shown) the measuring chambers receive radiation of the same phase and amplitude but of different spectral composition this being achieved by the use of filters one between each chamber and the radiation, consisting of cuvettes filled with a radiation absorbing gas and a non-absorbing gas respectively.
Patent GB-164728-A (GB)
Title: Improvements relating to protective devices for electric circuits
IPC: H01H71/16
Filed: 1921-05-19
Abstract: 164,728. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Smith, B. H.). June 9, 1920, [Convention date]. Transformers, - Protective devices for electric circuits comprise a thermal relay with a bimetallic member adapted to make and break the circuit through the operating coil of a circuit breaker controlling the protected circuit, the bimetallic member being actuated by the heating effect of energy supplied by the secondary of an auto- 'or two-winding transformer in the circuit controlled. The bimetallic member 16 is supported within a tubular member 7 of magnetic material, side plates 12, 13 of similar material being secured around the member 7, and an outer member 14 completing the magnetic circuit. Within the annular space between the members 7 and 14 are placed the transformer windings 10, 11, insulated metal connecting ferrules 8, 9 closing the ends of the member 7. An insulating shell 15 surrounds the member 14. Fig. 2 shows the connections for a two-winding transformer, the primary winding 11 being connected in series with the protected circuit 2, and the bimetallic member 16 being connected to the secondary winding 10. In Fig. 4 an auto-transformer is employed, the winding 11 being connected in series with the protected circuit, and the bimetallic member 16 connected to a section 10 of the winding 11. The ratio between the primary and secondary windings is such that the current traversing the bimetallic member is greater than the current in the protected circuit. The free end of the bimetallic member carries a contact 18, which normally touches an insulated contact 19, which is connected in the circuit of the holding-on electromagnet of the circuit breaker 3. The elements 7, 12, 13 and 14 of the magnetic circuit of the transformer are slotted to prevent formation of eddy currents. The air space surrounding the member 16 acts as a thermal insulant between the bimetallic strip and the transformer. Specification 114,161, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-110356-A (GB)
Title: Improvements in Electrical Starting Apparatus for Internal Combustion Engines.
IPC: F02N15/06
Filed: 1917-10-02
Abstract: 110,356. Bijur Motor Lighting Co., (Assignees of Bijur, J.). Nov. 24, 1915, [Convention datel. Casings and supports.-An electric starting - motor is mounted by one end upon the casing 4 of the fly-wheel. The end member 30 is secured to the motor casing 28 by longitudinal and radial screws 31, 32 and has a boss 36 fitting closely in an aperture 4' in the fly-wheel casing 4, to which it is secured by bolts 35. A bearing 33 for the armature shaft 8 is formed in the member 30.
Patent GB-769548-A (GB)
Title: Improvements in refill means for lighters of the gas-fuelled type
IPC: F23Q2/52
Filed: 1955-05-17
Abstract: 769.548. Forcing liquids by gas pressure. DUPONT, B. TISSOT-. May 17,1955 [April 23, 1955], No. 14208/55. Drawings to Specification. Class 102(2) A refill cartridge for a gas-fuelled lighter comprises a body of material having high thermal conductivity and one or more parts of transparent material defining with the body a container for liquefied gas. The body may be of metal and the other part or parts of plastic material. The Specification describes three embodiments in which the body has a transparent head or bottom or side windows.
Patent GB-163214-A (GB)
Title: Improvements in two-stage steam-jet air ejectors
IPC: F01B25/00
Filed: 1920-12-14
Abstract: 163,214. Weir, Ltd., G. & J., and Lang, C. R. Dec. 14, 1920. Ejector condensers.-Relates to steam-condenser air-withdrawal apparatus of the type having two-stage steam-jet air ejectors with a surface condenser between the stages, together with means for draining water of condensation from the intermediate to the main condenser, and consists in (1) providing a light non-return normallyopen stabilizing valve of the kind described in Specifications 125,650 and 129,358, between the intermediate condenser and the second stage ejector; (2) employing as the draining means a pipe of suitable bore, without cock, valve, or other controlling device, leading direct to the main condenser. Air withdrawn from the main condenser a passes the first stabilizing- valve f, the first-stage ejector b, and the intermediate condenser c, to the stabilizing-valve t according to the invention, and thence to the second-stage ejector d. The drain-pipe u is led to the main condenser from the lowest point of the system.
Patent GB-543434-A (GB)
Title: Improvements in spun glass products
IPC: C03C25/38
Filed: 1940-09-16
Abstract: 543,434. Yarns and threads. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 16, 1940, No. 14224. Convention date, Sept. 16, 1939. [Class 120 (iii)] [Also in Groups VIII, IV and XXXVI] Glass fibres in the form of filaments, threads, matted or woven fabrics, or tapes are coated with a composition comprising polyisobutylene and a water-insoluble metallic soap finely powdered stearates, palmitates, oleates, arachidates, or naphthanates of aluminium, calcium, strontium, barium, magnesium, zinc, cobalt, or lead may be suspended or dissolved in a solution of polyisobutylene in petroleum naphtha, toluol or. mixtures of toluol and butyl acetate. Aqueous emulsions made with the aid of ammonium hydroxide or triethanolamine may also be used. The coated fibres may be twisted into threads or woven into fabric or formed into a mat and further treated with the compsotion. A further coating of oil-modified phenol-formaldehyde resin may be applied. Wires or cables may be wrapped with the cellulose or acetate backed glass fibre not using shellac or resin as adhesive.