baber/WOPTO huggingface dataset:
Patent GB-642950-A (GB)
Title: Process for the preparation of alkanolamines
IPC: C07C215/06
Filed: 1947-06-25
Abstract: In a process for the preparation of alkanolamines by treating olefine oxides with ammonia in aqueous solution there is added to the reactants prior to reaction a quantity of the secondary alkanolamine whose formation it is desired to suppress or reduce which is greater than the quantity of the same formed at equilibrium for a given ammonia/oxide ratio without said prior addition, and is proportional to the quantity of primary alkanolamine formed at equilibrium under the same conditions.  The p  invention has particular reference to the production of ethanolamines.  Graphs are provided in which the percentage composition of the equilibrium mixture obtained in terms of mono-, di- and tri-ethanolamine is plotted against ammonia/oxide molecular ratios at 15 DEG  C. and the quantity of di-ethanolamine to be added to suppress its formation is also plotted against the molecular ratio of ammonia/ethylene oxide.  If an excess of diethanolamine is added only mono- and tri-ethanolamine will be obtained by the process and some of the added di-ethanolamine will be converted into the other two ethanolamines.  Propylene oxide and higher olefine oxides which react with ammonia may also be used. Five examples are given in which various concentrations of ethylene oxide and 0.92 aqueous ammonia are reacted at 15 DEG  C. in the presence of various quantities of di-ethanolamine.
Patent GB-819836-A (GB)
Title: Improvements in or relating to lighting apparatus for use in dental surgeries
IPC: F21V5/04
Filed: 1957-05-27
Abstract: 819,836. Lighting units. QUETIN, E. May 27, 1957 [June 21, 1956], No. 16782/57. Class 75(4) A lighting apparatus for dental surgeries comprises an orientatable dome having a centre lamp 18 supplied by low tension current, for producing shadowless lighting for intra-buccal illumination, and provided with a focusing device coaxial with the dome, and an annular luminescent lamp 22 for general illumination, surrounding the lamp 18, the supply transformer 34 for the central lamp, the starter 36 and inductance of the luminescent lamp and a fuse holder 40 to take fuses of various voltages being arranged in the space between the annular and central lamps, the control switches and focusing control being grouped on the dome adjacent the operating handle 17 of the apparatus. The centre lamp is surrounded by an annular lens 20 co-operating with an annular reflector 21 and is focused by a rack 27 engaging a pinion 28 connected by a shaft 29 having two cardan joints 30, 31 to an operating handle 33. The dome is mounted by a fork 11 on an adjustable arm carried by a pillar its position being controlled by the operating handle 17.
Patent GB-355385-A (GB)
Title: Improvements in or relating to vehicle head-lamps
IPC: F21V5/00
Filed: 1930-05-30
Abstract: 355,385. Vehicle lamps. ELLIOTT, T., 34, Gloucester Road, Redhill, Surrey. May 30, 1930, No. 16824. [Class 75 (iv).] Lantern screens.-An antidazzle a, n d f o g - penetrating screen for vehicle lamps comprises a central part 1 of lightdiffusing material, preferably uncoloured, and a marginal part that is coloured and inclined to the axis of the screen and preferably lightdiffusing. The marginal part may comprise segments 2 of ruby, smoke, yellow, brown, or other coloured glass or other translucent material alternating with other segments 3 of a different colour or colours, white, uncoloured, or left as gaps. The segments may be secured in a skeleton frame consisting of a base ring 4 of channel section and a shoulder ring-5 of smaller diameter secured together by arm 6, the disc 1 being pivotally mounted in vertical trunnions on the ring 5. The screen is preferably arranged with the base ring 4 adjacent the front glass b, but it may be arranged in the reverse position. Specification 369/15, [Class 75 (iv), Lamps &c., Kinds &c. of], is referred to.
Patent GB-563757-A (GB)
Title: Automatic loader for plug type air rifles and air pistols
IPC: F41B11/00
Filed: 1942-11-27
Abstract: 563,757. Pneumatic smallarms. BALL, J. M. Nov. 2,7, 1942, No. 16843. [Class 119] A tubular magazine 9 for a pneumatic gun of the type having a rotary loading-plug 1 is hingedly mounted on the gun above the loading hole, and is connected to the plug lever so that the magazine is erected to the feed position by operation of the plug lever. The magazine 9 is similar to that described in Specification 545,731.
Patent GB-1075098-A (GB)
Title: Electronic control switch circuit
IPC: H03K17/72
Filed: 1966-04-18
Abstract: 1,075,098. SCR switching circuits. W. BINDER. April 18, 1966 [April 22, 1965], No. 16889/66. Heading H3T. [Also in Division H2] A pair of reverse parallel connected thyristors 11, 12 are controlled by a switch 10 connecting the gate electrodes. Closure of the switch renders the thyristors conductive.
Patent GB-1372764-A (GB)
Title: Propulsive devices and vehicles provided with such a device
IPC: F03G3/00
Filed: 1972-04-12
Abstract: 1372764 Propelling aircraft and other vehicles FESTRADE 12 April 1972 16931/72 Headings B7G and B7H  A propulsive device for aircraft, spacecraft' and road or rail vehicles comprises a drive motor (9), Fig. 2 (not shown), a rotary member 5 which in operation is rotated in a given direction by the motor, a rod 11 carried by the rotary member and freely slidable relative thereto in the axial direction of the rod, weights 12 fixed at or adjacent the ends of the rod, and a stationary guide 6 extending at least partly around the rotary member, the radial distance of the guide from the axis of rotation of the rotary member decreasing in said direction of rotation. When the rotary member 5 is rotated with the rod so positioned that a first of the weights 12 is at a greater distance from the rotary member than the second weight, the first weight comes into contact with and moves along the guide and is thereby displaced radially inwardly until the centrifugal force on the second weight is greater than the centrifugal force on the first and causes the second weight to be displaced radially outwardly, the respective weight coming into contact with the guide thereby producing a thrust force to move the device. Two or more rods may be provided, and the outermost point of each rod is provided with a ball 15 rotatably carried within a sleeve 14 attached to the weight 12.
Patent GB-436906-A (GB)
Title: Improvements in and relating to catalysts serving for the removal of bad odours and poison from the exhaust gases of internal combustion engines
IPC: B01D53/86
Filed: 1934-06-07
Abstract: 436,906. Treating exhaust gases. DEGEA AKT.-GES. AUERGES., 16, Rotherstrasse, Berlin.-(Assignees of Deutsche Gasgl³hlicht - Auer - Ges. ; 16, Rotherstrasse, Berlin) June 7, 1934, No. 16941. Convention date, June 22, 1933. [Class 7 (ii)] Exhaust gases are purified by contact with a catalyst comprising a platinum group metal or its oxide applied by impregnation to a dried gel of large surface area, composed of one or more oxides of metals of groups 2, 3 and 4. An example is palladium or silica gel with or without zirconium oxide. According to the Specification as open to inspection under Sect. 91, other compounds of the said metals may also be used as carriers, and the carriers are not necessarily in the form of gel. Examples are corundum, flint, asbestos, marble, and magnesia. This subject-matter does not appear in the Specification as accepted.
Patent GB-1464685-A (GB)
Title: Circuit arrangement for forming a sum and/or difference signal
IPC: H03L7/16
Filed: 1975-04-24
Abstract: 1464685 Counting apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 April 1975 [27 April 1974] 17030/75 Heading G4D Apparatus for producing a train of pulses at a rate proportional to the sum or difference of the pulse rates of two input signals f 1 , f 2  comprises two counters Z1, Z2 of the same capacity; means VCO1, VCO2; PK1, PK2 feeding pulses to the counters Z1, Z2 at rates proportional to the respective signals f 1 , f 2 , the counters being arranged to reverse their direction of counting each time they respectively reach their minimum and maximum counts; memories F1, F2 which remember whether the last change of direction of the respective counter was at maximum or minimum; a comparator DK which detects when the count in the two counters is the same and issues an output pulse; and a circuit A which passes the output pulse to the sum output terminal U s  if the last direction changes were different (i.e. one maximum, one minimum) and to the difference output U d  if they were the same. If the outputs are to be true sum or difference frequencies then the variable oscillators VCO1, VCO2 are triggered to provide input pulses to the counters at rates exactly twice the capacity of the counters times the input frequencies. The counters are synchronised by out of phase clock signals f to avoid the counters changing simultaneously in opposite directions and missing an equality. The circuit A (Fig. 3, not shown), has provision to pass only one output pulse although the counts may remain equal for several clock pulses and therefore the comparator DK give several pulses. It also has means for giving a sign to the difference frequency depending on which input is higher. In a modification (not shown) of the apparatus one counter is omitted and replaced by means for selecting a count within the range of the other counter. By altering the selected count the phase of the output pulses relative to the input to the other counter can be varied.
Patent GB-204120-A (GB)
Title: Improvements in wheeled toys
IPC: A63H7/04
Filed: 1922-06-21
Abstract: 204,120. Powell, A. E. June 21, 1922. Mechanical toys.-A toy comprises a pair of runner wheels D mounted on an axle E which carries a horizontal disc A engaging both runner wheels, or as shown, one of the runner wheels only, and kept out of engagement with the other by a peg T. The toy is propelled by a collapsable handle I attached to a member F the forward end of which forms a rest, and figures are mounted on the disc A.
Patent GB-171403-A (GB)
Abstract: 171,403. Wehlmann, A. Nov. 11, 1920, [Convention date]. Grates.-Heating stoves for burning coke and the like are provided with a main grate above which is a series of fuel-troughs having sides c, d of perforated metal arranged in a frame which is pivotally supported at the rear on a rod h, and at the front by chains or wire cords l attached to a rotary shaft k. The sides d of the fuel troughs are pivotally mounted in the frame and are retained in normal position by a spring-pressed rod n. They are simultaneously operated by a key &c. applied to the axle of one of them. A lid g covers the troughs, and is provided with slots corresponding to the spaces between them. Gases from the fuel in the troughs escape through the perforated sides and are ignited. When fresh fuel is to be supplied, that remaining in the troughs is dumped by rotating the sides d so as to open the bottoms of the troughs; the frame containing the troughs is then lowered to the position shown in dotted lines in Fig. 2, and the lid g removed.
Patent GB-1396401-A (GB)
Title: Process for the reaction and separation of components utilizing a liquid surfactant membrane and an enzyme catalyst
IPC: B01D61/40
Filed: 1972-04-14
Abstract: 1396401 Treating liquids EXXON RESEARCH & ENG CO 14 April 1972 [7 May 1971] 17215/72 Heading C1C [Also in Division C2] A process of reacting, in the presence of an enzyme catalyst, at least one component of a feedstream which consists of one or more components, and of obtaining at least one resultant reaction product in a solvent therefor, comprises (a) forming droplets comprising either the feedstream or the solvent, (b) coating the droplets with a liquid surfactant membrane which is permeable to permit flow (i) of said component(s), or said reaction product(s) thereof, from the feedstream to the solvent or (ii) of said components(s) from the feedstream to the membrane and said reaction product(s) from the membrane to the solvent, and (c) contacting the coated feedstream droplets with the solvent or contacting the coated solvent with the feedstream, the enzyme catalyst being present with the feedstream, the solvent or the liquid surfactant membrane. The process may be used to remove nitrates, nitrites and phenols from waste water, oxidize phenol, hydrolyse urea and produce alkanols from alkanes. The liquid surfactant membrane may form the exterior phase of an emulsion, the interior phase containing the feedstream or solvent. The surfactant may be cationic, anionic, non-ionic or ampholytic (examples given). The liquid surfactant membrane may comprise strengthening agents (e.g. polyethylene glycol, polyvinyl alcohol, cellulose derivatives) and buffers (e.g. sodium hydrogen phosphate). In Example 1 an emulsion containing rubredoxin, ferridoxin- TPN reductase Pseudomona w-hydroxylase, nicotinamide adenine dinucleotide, sodium phosphate, glycerol and saponin in the exterior phase and octane in the interior phase is mixed with propionaldehyde. After standing the propionaldehyde layer containing 1-octanol is decanted and the octanol separated by distillation. In Example 2 a phenol solution is mixed with an emulsion containing in the external phase, a hydrocarbon, sorbitan monooleate, a polyamine derivative of succinimide, and in the interior phase, polyphenol oxidase in tris- (hydroxymethyl) aminomethane. Phenol is removed and oxidized phenol is found in tisinterior phase. In Example 3 phenol in cyclohexane is mixed with an emulsion containing saponin, mushroom polyphenol oxidase, glycerol and buffer in the exterior phase, and cyclohexane in the interior phase. Phenol is removed from the solution and oxidized phenol is found in the interior phase. In Example 4 nitrate is removed from waste water by contacting it with an emulsion containing an exterior phase similar to Example 2 and as an interior phase, an aqueous solution containing sucrose and nitrate reductase. In Example 5 urea is hydrolysed by contacting aqueous urea solution with an emulsion containing an exterior phase similar to Example 2 and urease solution in the interior phase.
Patent GB-1210200-A (GB)
Title: Tire building machines
IPC: B29D30/32
Filed: 1968-05-27
Abstract: 1,210,200. Tyre building machines. NRM CORP. 27 May, 1968 [29 May, 1967], No. 17220/70. Divided out of 1,175,103. Heading B7C. The description is identical with that in Specification 1,175,103, but the claims are directed towards a bead core setting means and clamp means for clamping the beads during expansion of the drum.
Patent GB-889447-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/58
Filed: 1958-05-30
Abstract: 889,447. Television. TELEFUNKEN G.m.b.H. May 30, 1958 [May 31, 1957; July 24, 1957], No. 17263/58. Drawings to Specification. Class 40(3). The control knob or knobs for an on/off switch or switches are mounted on the front panel of the cabinet of a television receiver, whilst the knobs for the remainder of the controls are mounted on the top. or a side of the cabinet and arranged to be covered by a displaceable cover. Two, generally similar, embodiments are described, Figs. 1 and 2 (not shown), the first having a single on/off control knob and the second two such knobs, one for day-time reception and the other for night-time reception. In each case the on/off control is in the form of a push button mounted just below the lower edge of the cathode ray tube mask; the other knobs are on the top of the cabinet, arranged to be covered by a hinged flap. In the embodiment having day- and night-time controls, each actuates an on/off switch, and the night-time switch additionally operates switches which reduce the contrast and brightness to levels suitable for night-time viewing This is effected by a circuit, Fig. 3 (not shown), in which the screen potential of the video amplifier is reduced and the cathode ray tube negative grid potential increased by simultaneously short-circuiting resistors in networks controlling the potentials.
Patent GB-146167-A (GB)
Title: Improved manufacture of tanning agents
IPC: C14C3/22
Filed: 1920-06-25
Abstract: Tanning-agents are obtained by treating sulphonated condensation products from cyclic hydrocarbons or phenols with oxidizing-agents. The products probably contain quinone groups; they are mainly insoluble in water but can be dissolved by admixture with other artificial tanning-agents; this admixture may be effected by a partial oxidation of the parent substances, so that some of the soluble parent substance remains in the product. Suitable oxidizing-agents are oxygen, ozone, hydrogen peroxide, potassium bichromate, permanganate, perchlorate, or perborate, nitric acid, chlorine, etc.; the treatment with chlorine or nitric acid probably introduces chloro or nitro groups as well, while bichromate or permanganate give products containing chromium or manganese which exert a tanning action. By using persulphates, sulponative, condensation, and oxidation may be effected in one stage. According to examples, phenol or cresol is sulphonated by means of sulphuric acid, formaldehyde is added, and the product is treated with nitric acid or bichromate; phenol or cresol is heated with aqueous potassium persulphate, and formaldehyde is added, followed by more persulphate; naphthalene is sulphonated by sulphuric acid, formaldehyde is added, and chlorine passed in to saturation; the tanning-agent made from acid resin of mineral oil refinery by concentrating a neutralized aqueous solution and discarding the salts which crystallize out, is treated with potassium permanganate; phenol mixed with formaldehyde is heated and air passed in until the product is insoluble in water, a further portion of phenol or cresol is sulphonated and condensed with formaldehyde, the two products are mixed, giving a colloidal solution, which is then oxidized by hydrogen peroxide. Reference has been directed by the Comptroller to Specifications 16647/86, 19502/90, 10320/93, 10321/93, 10322/93, 10323/93, 17346/99, 4648/11, and 8069/13.
Patent GB-571505-A (GB)
Title: Improvements in or relating to means for suspending and transferring articles from conveyers and the like
IPC: B65G47/61
Filed: 1943-10-21
Abstract: 571,505. Conveyers. ELECTRIC FURNACE CO., Ltd., and COLLYER, L. C. Oct. 21, 1943, No. 17341. [Class 78 (i)] A device for suspending and transferring articles C from conveyers comprises a two-armed substantially L-shaped member A, B having a seating A2 for a pivot C<1> at the junction of the arms from which the article is suspended. Hooks A<1>, B<1> at the ends of the arms engage horizontal bars D, E which are suspended by pivoted links D<1>, E<1> from the conveyers. Transference takes place when the bar E moves upwards relatively to the bar D.
Patent GB-1177370-A (GB)
Title: Improvements in or relating to electronic relays
IPC: H03K17/68
Filed: 1967-04-14
Abstract: 1,177,370. Semi-conductor switching circuits. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 14 April, 1967 [15 April, 1966], No. 17377/67. Heading H3T. An electronic switching circuit comprises a diode bridge having the voltage to be switched connected to apices 1a, 17a and having at least one transistor connected across the other two apices. A resistor is connected between the collector and base of the transistor so that the transistor is arranged to be saturated by the voltage to be switched hence the circuit is normally in a closed condition; a control voltage. Vc is coupled to the base of the transistor via an isolator circuit C1 so as to turn off the control transistor when the circuit is to assume an open condition. The isolator circuit C1, C2 preferably takes the form of a push-pull transistor oscillator (Fig. 4, not shown) having the output coupled via transformer to a bridge rectifier so that a D.C. output is available only when a D.C. control signal is applied to the collectors of the oscillator transistors. Two diode bridges A1, A2 may be employed as shown to provide a change-over switching arrangement. In the absence of the control voltage Vc, the left-hand transistor V1 is saturated so that terminals 1a and 2 arc effectively connected together via the diode bridge A1. In the presence of the control voltage Vc,-transistor B2 is turned on, effectively connecting terminals Ib and 2 via-the diode bridge. A2. The right-hand transtor B1 is also turned on, turning off the lefthand transistor and, removing the conductive path between terminals 1a and 2. Alternatively, the control circuit may take the form of two transistors 38, 39 connected in the series path across the control apices of the diode bridge A. The conductivity of transistors 38, 39 is controlled by a bi-stable circuit D in turn controlled by the outputs of D.C.-D.C. converters C1, C2 in response to the polarity of the control voltage Vc. Terminal 29 is thus connected either to terminal 1 or terminal 2 in dependence on the polarity of the control voltage Vc.
Patent GB-982432-A (GB)
Title: Improvements in or relating to electrical components and the manufacture thereof
IPC: B05C19/00
Filed: 1961-05-12
Abstract: 982,432. Coating surfaces; coating-apparatus. INTERNATIONAL RESISTANCE CO. May 12, 1961 [June 7, 1960], No. 17409/61. Heading B2B. [Also in Divisions B8 and H1] An electrical component is coated by forming a shower of discretely distributed solid particles of an organic plastics material in a confined space, heating the component and passing it through the shower, whereby the particles fuse on to the component and coat it. The component may be a resistor ; a suitable coating is a silicone resin or a mixture of a silicone resin and an epoxy resin. As shown, a container 52 has an opening 64 in the bottom covered by a screen 66. Baffle plates 72 form a funnel for the plastic particles. The component 74 to be coated is conveyed past pre-heaters, under the container, and optionally past a post-heating device. Friction strips 136, 136<SP>1</SP> engage the terminal wires 138, 138<SP>1</SP> of the component as it passes the coating stage so that it rotates while in the shower of particles to ensure an even coating.
Patent GB-208094-A (GB)
Title: Improvements in and relating to apparatus for separating floating and other impurities in suspension from liquids
IPC: B01D21/02
Filed: 1923-07-05
Abstract: 208,094. Petree, C. G. July 5, 1923. Separating by gravity.-In a settling-tank fitted with a central feed throat p, a volute wall r extending from the throat to the outer wall of the tank, revolving scrapers j to remove matter from the conical wall of the tank, an overflow round the edge of the tank and a central outlet at the base, the throat has an opening or cut away portion y near its lower edge through which the liquid delivered to the tank passes into the channel formed by the volute wall, and the outer edge of the volute wall, while connected to the wall of the tank at its upper extremity, is cut away or splayed inwardly so as to leave room at this position for the passage of the scrapers. The overflow u is shown as formed in sections each having its own discharge pipe x.