baber/WOPTO huggingface dataset:
Patent GB-1016572-A (GB)
Title: Improvements in or relating to breathing apparatus
Inventor: ALLEN GEOFFREY REX
IPC: A62B7/12
Filed: 1963-03-21
Abstract: 1,016,572. Breathing apparatus. MINISTER OF AVIATION. June 15, 1964 [March 21, 1963], No. 11235/63. Heading A5T. An oxygen breathing apparatus comprises a capacity reservoir C and, as means for metering the mass flow of the oxygen into the reservoir, a sonic Venturi D such that the mass flow through it is limited to a known maximum value and that this mass flow is maintained whilst pressures in the reservoir may vary from zero up to values approaching those upstream of the Venturi. Oxygen is introduced into the reservoir C from supply E, via reducing valve B and Venturi D. On inhalation, oxygen is fed to the person from reservoir C via demand regulator A. If the volume demanded on the inhalation stroke is greater than the volume of reservoir C, air inlet valve G opens and an air/ oxygen mixture is fed to the person.
Patent GB-200246-A (GB)
Title: An improved lathering appliance for use in shaving
IPC: A45D27/04
Filed: 1922-04-21
Abstract: 200,246. Lindemann, B. April 21, 1922. Shaving - appliances; pads and like rubbing appliances.-A lathering appliance for use in shaving comprises a cup - shaped pad of sponge rubber mounted on a suitable handle. It may be made from one piece, of sponge rubber, bound centrally by a clamping ring c or its equivalent to form a handle a and a lathering- pad b.
Patent GB-168354-A (GB)
Title: Improvements in and relating to davits
IPC: B63B23/18
Filed: 1920-04-23
Abstract: 168,354. Pett, F. S. April 23, 1920. Stanchions. - A davit column constructed so as to strengthen the boat deck extends downwardly from a predetermined height above, at or below the boat deck 23, to the next lower deck 26, its curtain plate 29 or the ship's side. The column may comprise a short column 1 with a bed plate 2 bolted to the boat deck and the upper flange 27 of a column 21 fitted with a flange 24 screwed so as to be adjustable and bolted to the next lower deck. In a modification, the column is in one piece with an upper bed-plate 2 and a lower flange 24. In another modification, the plate 2 is replaced by a side foot bolted to the boat deck curtain plate and the lower flange is bolted to a bracket on the curtain plate of the next lower deck. In a further modification, Fig. 7, the short column 1 is fitted with a bed-plate 2 hinged to another bed-plate 2a fast to the deck, the column 21 being omitted in this Figure.
Patent GB-745069-A (GB)
Title: Improvements in or relating to phenthiazine derivatives and to their production
IPC: B27K3/40
Filed: 1953-04-23
Abstract: The invention comprises 10-(31-pyrrolidinopropyl)-phenthiazine, its salts and quaternary ammonium derivatives, and the preparation thereof by (1) heating a 1-pyrrolidino-3-halogenopropane or salt thereof with phenthiazine, preferably in presence of an alkaline condensing agent and an organic solvent; (2) heating pyrrolidine with a phenthiazine of formula <FORM:0745069/IV(a)/1> wherein X represents the acid residue of an alkyl ester known to be active as an alkylating agent, e.g. a halogen atom or the residue of a sulphonic or sulphuric ester; or (3) cyclizing 2-bromo - 21 - (311 - pyrrolidinopropyl) - aminodiphenyl sulphide by heating it in an anhydrous solvent (e.g. dimethylformamide or N-methylacetamide) in the presence of a basic condensing agent (e.g. an alkali metal carbonate) and preferably using a copper powder catalyst.  The examples describe the preparation of the hydrochloride, acid oxalate and iodomethylate of 10-(31 - pyrrolidinopropyl) - phenthiazine.  1 - (101 - Phenthiazinyl) - propyl - 3 - paratoluene sulphonate is prepared by reacting paratoluene sulphonylchloride with 10-(31-hydroxypropyl)-phenthiazine.  2 - Bromo - 21 - (311 - pyrrolidino - propylamino) - diphenylsulphide is prepared by refluxing 2 - bromo - 21 - amino - diphenylsulphide and 1-chloro-3-pyrrolidinopropane with sodamide in xylene.  2 - Bromo - 21 - amino - diphenylsulphide is prepared by reducing the corresponding nitro derivative with stannous chloride or iron.
Patent GB-124989-A (GB)
Title: Improvements in Jigs applicable for Setting and Holding Articles for and during Mechanical Operations thereon.
IPC: B23B47/28
Filed: 1918-07-10
Abstract: 124,989. Blackburn Aeroplane & Motor Co., and Chapman, G. July 10, 1918. Work-holders; drilling.-A jig for positioning plates of similar contour for drilling &c. consists of a bed 1 having a number of intersecting undercut grooves in its upper face adapted to receive the heads of bolts 4 and to prevent the bolts from rotating. Sleeves 5 are secured on the bolts by nuts 6 after the bolts have been positioned by means of a templet. A holding-device consists of a lever 10 pivoted on a bolt 7 and adapted to be held at its other end by a similar bolt 7 entering a groove in the lever, an adjustable bolt 14 being supplied to press on the work. The bed-plate may be provided with a plunger which forces the work clear when the clamp 10 is released and the bottom blank of the pile may be of hard wood to preserve the drill from damage.
Patent GB-1350747-A (GB)
Title: Electrically controlled fuel injection system for internal  combustion engines
IPC: F02D41/34
Filed: 1973-03-08
Abstract: 1350747 Electronic fuel injection systems for I C engines ROBERT BOSCH GmbH 8 March 1973 [9 March 1972 11316/73 Heading G1N In an I. C. engine intermittent fuel injection system of the type having a transistorized control unit 20 and a transistorized driver stage 45 for providing in synchronism with engine rotation, injection valve opening pulses having a duration determined by at least one engine operating parameter, a series combination of a relay 60 and a diode 61 is connected in series with the current source 51 as shown, the relay having two operating contacts 62, 63 which are only closed to energize the control unit 20 when the current source 51 is connected correctly. The switch 55 is the ignition switch. A second diode 68 is provided to protect against temporary polarity changes, e. g. occurring when large loads supplied by the current source 51 are switched off. A third diode 69 connected in parallel with output transistor 48 of driver stage 45 protects the driver stage.
Patent GB-547357-A (GB)
Title: Wave filter
IPC: H03H9/60
Filed: 1941-09-05
Abstract: 547,357. Filters using piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Sept. 5, 1941, No. 11369. Convention date, Sept. 14, 1940. [Classes 40 (iii) and 40 (v)] A filter comprises a pair of crystals 5, 6 having the same principal resonance frequency but different secondary resonance frequencies and connected as shown with a common electrode 13 co-operating with unplated faces, a bridging arm comprising a condenser ¢C, and preferably a resistance 2R, a series arm connected to the common electrode and comprising an inductance ¢L and preferably a condenser 2C2, and additional condensers C3 connected as shown. All the purely electrical elements are preferably variable. The equivalent lattice is shown in Fig. 2. The crystals are of the AT type as described in Specification 540,184 and are partially plated on one side only and clamped between recessed ceramic members 14, 15 piovided with silver globules as at 19 acting as terminals and strips of plating to connect the crystal plating to the globules. The common electrode 11 is a recessed steel disc. The dimensions of the members 11, 14 and 15 are such that the crystals are only held at the corners.
Patent GB-149399-A (GB)
Title: Improvements in hollow wall constructions and channel bricks therefor
IPC: E04B2/02
Filed: 1919-05-07
Abstract: 149,399. Fiske, J. P. B. May 7, 1919. Double walls are formed of bricks of the type described in Specifications 23011/13 and 114,199. The bricks have an horizontal web portion 1 and ribs 2, 3 forming channels 6 to receive mortar adjacent each face of the wall. The ribs are of uniform section and the channels are of equal and uniform width. The tie members 5 may be continuous with the web 1, or offset as shown. The bricks are varied as regards both the position of the web 1 and the depth of the channels. Specification 135,740 is also referred to.
Patent GB-1033313-A (GB)
Title: Porous electrode and method of preparing the electrode
IPC: H01M4/86
Filed: 1963-03-22
Abstract: 1,033,313. Fuel cells. GENERAL ELECTRIC CO. March 22, 1963 [May 15, 1962], No. 11461/63. Heading H1B. A fuel cell has a porous catalyst electrode comprising a gas impervious matrix with regularly spaced capillary openings, the openings being Venturi shaped and all substantially of the same diameter. The matrix has an overlying surface layer of a catalyst metal. The electrode is made by photo-forming a resist layer on a substrate and then depositing metal on the substrate where the resist layer has been removed. The grid is then stripped from the substrate and more metal is electro-deposited on the grid under controlled conditions to give Venturi-shaped apertures and finally a catalyst metal is deposited on the electrode.
Patent GB-580190-A (GB)
Title: Improvements in or relating to neoprene solutions
IPC: C08K5/1539
Filed: 1944-06-16
Abstract: Solutions of polymerised chloroprene and copolymers of chloroprene in organic solvents are prevented from gelling or standing by the addition of a substance of the group consisting of (a) cis-isomerides of unsaturated dicarboxylic acids of general formula <FORM:0580190/III/1> or their anhydrides or (b) dicarboxylic acids of the formula <FORM:0580190/III/2> where R1 and R2 represent hydrogen or saturated or unsaturated aliphatic hydrocarbon or aromatic hydrocarbon radicals and may be the same.  The preferred inhibitors are maleic acid, maleic anhydride and malonic acid, from 0.02 to 0.1 per cent being normally employed.  In certain cases in which the inhibitor alone is not completely effective, triethanolamine or a mixture of triethanolamine with diphenylguanidine may also be added with the inhibitor.  The solvents may be aromatic hydrocarbons, such as benzene, toluene or xylene, chlorinated hydrocarbons such as trichlorethylene, or esters such as ethyl acetate with the optional addition of petroleum spirit.ALSO:Solutions of polymerized chloroprene or copolymers of chloroprene with other polymerizable substances in which copolymers the chloroprene component predominates, such as Neoprene E, CG, GR-M and GN, in organic solvents are prevented from gelling on standing especially in the presence of contaminants such as iron, lead, copper or naphthols or at elevated temperature by the addition of a substance of the group consisting of (a) cis-isomerides of unsaturated dicarboxylic acids of general formula <FORM:0580190/V/1> or their anhydrides or (b) dicarboxylic acids of formula <FORM:0580190/V/2> where R1 and R2 represent hydrogen or saturated or unsaturated aliphatic hydrocarbon or aromatic hydrocarbon radicles and may be the same.  The preferred inhibitors are maleic acid, maleic anhydride and malonic acid, from 0.02-0.1 per cent. being normally employed.  In certain cases in which the inhibitor alone is not completely effective triethanolamine or a mixture of triethanolamine with diphenylguanidine may also be added with the inhibitor.  The solvents may be aromatic hydrocarbons such as benzene, toluene or xylene chlorinated hydrocarbons such as trichlorethylene or esters such as ethyl acetate with the optional addition of petroleum spirit.
Patent GB-697730-A (GB)
Title: Improvements in and relating to liquid fuel catalysts and fuels resulting therefrom
IPC: C10L1/23
Filed: 1950-05-09
Abstract: A catalyst for improving liquid fuels for internal combustion and gas turbine engines and heating devices, consists of a mixture of an aromatic metal-free nitro compound and an iron salt of a nitrated hydroxy-aromatic compound.  The ratio by weight of the salt to the nitro compound is from 0.1-0.01.  Nitro compounds specified are trinitrophenols, dinitrophenols, trinitrocresols, trinitroanisoles, trinitrophenetoles, picramic acid, picryl chloride and nitronaphthalenes.  Iron salts mentioned are the ferrous and ferric salts of trinitrophenols trinitrocresols and picramic acid.  The catalytic mixture may be dissolved in a solvent such as a mixture of benzene, toluene, ether, or acetone and methylated spirits or a lower fatty alcohol such as methanol, ethanol or propanol.  Preferably the fuel contains from 0.002-0.01 per cent of the catalytic mixture.
Patent GB-155606-A (GB)
Title: Improvements in pipe couplings
IPC: F16L27/107
Filed: 1919-05-08
Abstract: 155,606. Parnacott, A. E. May 8, 1919. Joints with yielding outer sleeve compressed. -In joints for pipes in which a rubber sleeve a is passed over the adjacent ends of the pipes b, b<1> and is compressed by internally tapered nuts c, c<1> screwed on to the ends of the rubber sleeve, an internal sleeve d is provided having an external central rib c against which the pipe ends abut. The sleeve d preferably has a Venturi form bore, and externally tapers outward towards the ends to give a certain amount of flexibility to the joint.
Patent GB-514685-A (GB)
Title: Improvements in or relating to negative resistance circuit arrangements
IPC: H04B1/16
Filed: 1938-04-14
Abstract: 514,685. Valve circuits; artificial lines. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., RUST, N. M., and BRAILSFORD, J. D. April 14, 1938, No. 11572. [Classes 40 (iii) and 40 (v)] A negative-resistance circuit arrangement comprises a natural or artificial line with a negative resistance consisting of a pair of crosscoupled pentodes, acting as its termination. The arrangement is particularly applicable to the production of oscillations, the stabilising of oscillations, and the provision of controlled reaction. Fig. 2 shows the negative resistance circuit comprising two pentode valves 6, 3 reciprocally coupled by condensers 4, 8. The suppressor grids 19, 18 may be connected to adjustable tappings on cathode resistances 17, 16, respectively to ensure that the negative resistance does not vary greatly with signal amplitude. Negative resistance Zn is produced between the control grid of valve 6 and an adjustable tapping 10 on a resistance 11 connected between earth and a negative source. Control of the negative resistance is effected by varying the tapping between the control grid of valve 3 and resistance 9. Fig. 4 shows an oscillation generator comprising a quarterwave concentric line 1, with the conductors connected together and to earth at one end and to a negative resistance Zn at the other. With the line conductors open at one end, the line will act as a half-wave line. Tuning of the oscillator may be affected by connecting a variable reactance across the end of the line remote from the negative resistance. An actual line may be made of the required length by the addition of a phase-changing network. Oscillation at the fundamental or a desired harmonic frequency may be determined by the addition of a tuned circuit. Fig. 12 shows an artificial line terminated by a negative resistance Zn employed to stabilise a reaction oscillator 28. In such a case to ensure oscillation at a desired harmonic, the part of resistance 9, Fig. 2, between tappings 12, 10 may be replaced by a tuned circuit. Fig. 14 shows the application to the provision of controlled reaction to improve selectivity in a radio receiver. A tap on the aerial inductance 32 is connected through one concentric cable 1c, a tunable circuit 34, 35 and a second concentric cable 2c terminated by a negative resistance Zn, to a wide-band amplifier 37. Control of the reaction can be affected by varying resistance r, Fig. 2, or the grid bias on valves 6, 3. In other embodiments, the single-tuning circuit 35, Fig. 14, is replaced by a circuit with two tuning condensers. The invention may also be applied to lines which are not a quarter-wave or a multiple of a quarter-wave length to obtain variable reactive effects at the remote end of the line.
Patent GB-455350-A (GB)
Title: Improvements in covers for bucket seats and other analogous single or other seats in motor-driven vehicles
IPC: B60N2/60
Filed: 1935-04-16
Abstract: 455,350. Knitted seat - covers. MEDLOCK MANUFACTURING CO., Ltd., Oldham, and BROWN, B. J., 69, Vicars Road, Chorlton-cum-Hardy, Manchester. April 16, 1935, No. 11687. Drawings to Specification. [Class 74 (ii)] [See also Group XIV] Cover bags for motor-vehicle seats are made of tubular knitted fabric in which are worked elastic yarns. There may be an extension or apron and the mouth of the bag may be contracted by a draw cord or tape.
Patent GB-565293-A (GB)
Title: Improvements in or relating to fault locators for telephone or like transmission lines
IPC: H04M3/28
Filed: 1943-07-19
Abstract: 565,293. Locating faults ; capacitance measurements. TIMMIS, A. C. July 19, 1943, No. 11746. [Class 37] A fault locator for telephone lines comprises a Wheatstone bridge fed with low frequency alternating current and having a detector which comprises a vibrating contact in series with a telephone. The Wheatstone bridge is fed from a hand-operated magneto-generator connected to terminals G1, G2, between which and the bridge is a low pass filter cutting off at about 30 cycles per second. The filter system comprises filter units 1A, 1B and condensers QA, QB, QC. Resistances YA, YB are connected between the terminals G1; G2 and the filter unit 1A. Two arms of the bridge are formed by a fixed resistance YD and a variable resistance YC provided with a dial and pointer. The other two arms are formed by a high value logarithmic resistance YE and the lines under test, which are connected to terminals L1, L2. If one wire only is being tested, it is connected to the terminal L1, the terminal L2 being earthed. A fullerphone or other vibratory detector F driven by a low-tension battery B, is connected in series with a headphone T across the points a, b of the bridge through a low-pass filter IG which cuts off at about 30 cycles per second. The variable high resistance YE is adapted to be selectively paralleled by one of three condensers QD, QE, QF by means of an adjustable link U1. The line circuit across the terminals L1, L2 is adapted to be shunted by either of two condensers QE, QG by means of an - adjustable link U2, which is normally connected to a contact DIS to which no condenser is connected. With the resistance YE in open circuit starting position, the link U1 connected to the condenser QE, and the link U2 on the contact DIS, the resistances YC, YE are alternately adjusted to obtain minimum sound in the headphone. If no balance is obtainable the operations are repeated with the link U1 connected to the condenser QF or QD. When balance is obtained, the reading of the resistance YC indicates the capacitance of the line as a percentage of the capacitance of the condenser connected by the link U1. The link U2 is used to add a known capacitance to the line so as to avoid balances under 25 per cent, which may give a false location when the insulation is poor. The capacitance so added is subtracted from the dial reading in order to give the true line capacitance. The distance to the break as a fraction of the length of the line is given by the ratio of the capacitance of the faulty line to that of a good line.
Patent GB-410313-A (GB)
Title: Improvements in or relating to vacuum-tight junctions between metal and glass
IPC: H01J5/26
Filed: 1933-04-22
Abstract: 410,313. Tube joints. M-O-VALVE CO., Ltd., Marconi House, Strand, London, ADAMS, F. J., and SMITHELLS, C. J., c/o General Electric Co., Wembley, Middlesex. April 22, 1933, No. 11802. [Class 99 (i).] A method of joining a glass tube 2 to a metal vessel 1 consists in flaring one end of the tube, passing the unflared end through a hole in the vessel, from the inside to the outside, and then uniting the flare by fusion to the interior surface of the vessel immediately surrounding the hole.
Patent GB-706120-A (GB)
Title: Improvements in or relating to a wax manufacture process
IPC: C10G73/06
Filed: 1951-05-21
Abstract: The preparation of polymerized esters is described.  In an example fumaric acid is esterified with a mixture of C8-C18 alcohols using sulphuric acid as catalyst in the presence of naphtha at 250 DEG F., the ester is washed and naphtha distilled off.  Benzoyl peroxide is added and the fumarate polymerized at 175 DEG F. under a nitrogen atmosphere.  In the other example a mixture of C8-C18 alcohols is esterified with maleic anhydride, vinyl acetate added and the mixture diluted with white oil and polymerized as in the first example.  The polymerization mixture contains 80 per cent. of the maleate and 20 per cent. vinyl acetate.  U.S.A. Specification 1,815,022 is referred to.ALSO:Refined wax is produced from crude wax obtained by dewaxing petroleum oil by adding a volatile solvent and a pour depressant to the crude wax, agitating the mixture while cooling by evaporation of the solvent, and separating the wax from the solvent.  Volatile solvents referred to are liquefiable, normally gaseous hydrocarbons such as propane.  Pour depressants mentioned are those prepared by a Friedel-Crafts reaction between naphthalene and a halogenated wax, polymerized fumaric acid esters of a mixture of C8 to C18 alcohols, and a mixed polymer of the maleic ester of a mixture of C8 to C18 alcohols and vinyl acetate.  The waxy mixture may be agitated during cooling either by mechanical means or by introducing vaporous solvent near the bottom of the mixture.  The crude wax may be obtained by solvent dewaxing a distillate oil, for example with propane or methy ethyl ketone, and sweating the slack wax. The refined crude wax may be further treated by distillation into fractions and treatment with bauxite.  U.S.A. Specification 1,815,022 is referred to.
Patent GB-552648-A (GB)
Title: Improvements in or relating to cellulose derivative cementing compositions
IPC: C09J101/00
Filed: 1941-09-16
Abstract: 552,648. Cellulose derivative compositions. CELLULOID CORPORATION. Sept. 16, 1941, No. 11833. Convention date, Nov. 9, 1940. [Class 2 (ii)] A cement suitable for use in effecting adhesion to sheet materials having a basis of a cellulose ester or ether consists of 10 parts by weight of cellulose nitrate and 6-10 parts of a substance which is a plasticizer for both cellulose nitrate and the cellulose ester or ether of the sheet material, dissolved in 60-100 parts of a solvent mixture consisting of 25-50 per cent. of low-boiling solvents and 75-50 per cent. of medium-boiling solvents. It may be used for effecting adhesion between cellulose ester or ether sheet materials and textile fabrics of cotton, silk, or other natural or synthetic fibres, or leather, paper, cardboard, wood, or other material. The plasticizer may be dimethyl phthalate, dibutyl tartrate, methyl phthalyl ethyl glycollate, ethyl phthalyl ethyl glycollate, or a mixture of o- and ptoluene ethyl sulphonamides. These substances are plasticizers for both cellulose nitrate and cellulose acetate. The medium boiling solvent may be the mono-methyl ether of ethylene glycol or the acetate of this compound, dioxane, or diacetone alcohol. Acetone may be used as low boiling solvent. The cement may be sprayed on to the surfaces to be joined, and the treated surfaces are dried long enough to assume a tacky condition and then they are brought together. The assembly is then placed between polishing plates or cardboards and run through cold pressure rolls. It is then passed between heated rolls or plates and then again passed through cold rolls. The cement may be used for sticking foils or thin films of cellulose acetate, nitrate, propionate, acetobutyrate, or other ester, or of ethyl, benzyl or other cellulose ether to similar foils or films or to fabrics, leather, paper, or other materials.