baber/WOPTO huggingface dataset:
Patent GB-685833-A (GB)
Title: Improved process for preparing hexachlorocyclohexane
IPC: C07C17/02
Filed: 1948-11-25
Abstract: Benzene hexachloride is prepared by treatment of benzene with chlorine in presence of an aqueous solution having an initial temperature not higher than -10 DEG  C. which serves as a cooling medium, the freezing - point of the aqueous solution not being higher than -12 DEG  C.  The process may be operated continuously; preferably the aqueous solution contains a basic substance, e.g. sodium hydroxide, as well as a solute for lowering the freezing-point, e.g. sodium chloride.  Liquid chlorine is preferably used, and "active chlorine," i.e. in atomic form or monovalent positive chlorine as it occurs in compounds such as chlorine monoxide and nitrogen trichloride, is desirably present. The active chlorine may also be produced by action of the chlorine on aqueous ammonium salts, or water in presence of insoluble material such as mercuric oxide or chalk.  It is stated that the processes of Specifications 649,428 and 685,294, where they relate to the use of "active chlorine," may be applied to the present process.  Two examples of the process are given.
Patent GB-1434770-A (GB)
Title: Production of surface diffusion alloys
IPC: C23C10/04
Filed: 1973-06-27
Abstract: 1434770 Formation of surface diffusion alloys inside hollow parts OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES 27 June 1973 [30 June 1972] 30667/73 Heading C7F A surface diffusion alloy is formed on the inner wall of a hollow metallic part of e.g. Fe, Ni, Co, W, Mo or an alloy thereof which may include Cr, Ti, Al or Zr, by applying thereto under vibration a thixotropic cement of the composition defined below, whereby the cement is liquefied and penetrates the internal cavities of the hollow part, allowing the cement to rest and regain its initial viscosity, effecting a conventional heat diffusion treatment in a hydrogenated-halogenated atmosphere and finally removing the cement. The cement comprises a powder or alloy of the metal(s) to be applied, an inert particulate inorganic refractory oxide, a halogen or halogenated compound and a solution of a surfactant which confers thixotropicity on the cement. The application metal may be Cr, Al, Ta, Ti, Zr, V, Nb Ni, B, Si, Cr C or certain alloys thereof. The oxide may be BeO, CaO, BaO or MgO. The halogenated compound may be NH4 Cl whereby the required hydrogen is released also therefrom. The surfactant may be e.g. oleic, linoleic or ricinoleic acid in solution in a hydrocarbon or alcohol, e.g. isopropanol. This solvent may be driven off by heating prior to the heat diffusion treatment. The cement may be removed mechanically or by attacking the oxide thereof with an inorganic or organic acid inert to the alloy formed. The outer surface of the parts undergoing treatment may simultaneously be treated e.g. by a fluorinated brightening atmosphere or a separate but diffusionalloy-forming process.
Patent GB-467464-A (GB)
Title: Improvements in and relating to electro-magnetic switches
IPC: C09C3/00
Filed: 1936-11-11
Abstract: 467,464. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 11, 1936, No. 30797. Convention date, Nov. 13, 1935. [Class 38 (v)] An electromagnetic switch operating in a gas-filled or evacuated container has fixed contact rods 2 sealed into re-entrant seals 3 at the ends of the glass container 1 and normally bridged by a rod 12. The rod 12 carries a loose cylindrical armature 13 which when attracted by an external electromagnet situated above the envelope engages the rod after lost motion with a sharp blow thus ensuring the separation of the contacts in case they are slightly fused together. The rod is guided in slots in a V-shaped member 11 supported by rods 9 which extend into cylindrical porcelain insulators 6 mounted on the rods 2 and supported clear of the sides of the envelope 1. The insulators have triangular holes 7, Fig. 2, through which the rods 2 pass, strips. of molybdenum 4 also passing through these apertures and being secured to the rods 2 with interposed nickel strips 5. The inner ends of the strips 4 are bent up so as to engage the end of the rod 12 in case the switch is not horizontal. One of the strips 5 may carry a " getter pellet " 14. The upward movement of the contact rod 12 is limited by the upper edges of the slots 11. Specification 435,174 is referred to.
Patent GB-1426737-A (GB)
Title: Setting for a disc-shaped decorative article eg a coin
IPC: A44C17/02
Filed: 1972-07-03
Abstract: 1426737 Coin setting H N McCUE 13 July 1973 [3 July 1972] 30952/72 Heading A3H  A setting for a coin or other disc shaped article comprises a coin receiving base member 1 and a cover member 7. The base member 1 comprises a slotted rim 3 whose tongues 5 each have one of their side edges turned inwardly to engage the serrations, if any, of the coin. The cover member 7 has projections which are bent beneath the base member, and a top wall 8 which engages the coin and hides the tongues 5.
Patent GB-955139-A (GB)
Title: Improvements in or relating to pumps and motors
Inventor: BONER HENRY HORACE
IPC: F04B1/18
Filed: 1959-09-11
Abstract: 955,139. Reciprocating pumps. TELEHOIST Ltd. Sept. 9, 1960 [Sept. 11, 1959], No. 30998/59. Heading F1A. The cylinders of a swash plate pump are through bores 11 of constant diameter and receive outlet valve inserts 35 which are located either in recesses 55 in the end plate 16 by means of flanges 56 or circlips (Fig. 4 not shown) or against the end plate and circlips in the bores (Fig. 3 not shown).
Patent GB-189344-A (GB)
Title: An improvement relating to electrical telephone transmitters
IPC: H04R21/02
Filed: 1921-11-21
Abstract: 189,344. Pilkington, B. A. Nov. 21, 1921. Drawings to Specification. Microphones and variable resistance transmitters.-A microphone consists of a chamber, the front and back walls of which are of conducting material insulated from one another, containing carbon balls in a single layer, the walls being so spaced in relation to the shaft that the latter cannot pack or become wedged. The diameter of the balls is greater than one-half the distance between the front and back walls of the chamber, and there is an effective lateral clearance which does not exceed 0.75 of the diameter of the balls used. The sides of the chamber may be of any shape and may be straight or curved.
Patent GB-838022-A (GB)
Title: Improvements in electrostatic loudspeakers
Inventor: CUTLER GEORGE DONALD
IPC: H04R19/00
Filed: 1956-10-11
Abstract: 838,022. Electrostatic loud-speakers. PYE Ltd. Oct. 11, 1957 [Oct. 11, 1956], No. 31049/56. Class 40 (4). In a push-pull electrostatic loud-speaker comprising a central polarized electrode between two outer signal electrodes, the central electrode consists of a sheet of insulating material coated on each of its surfaces with a poor conductor to provide a time constant for fluctuations of polarizing charge which is larger than half the period of the lowest frequency to be reproduced. The insulating material may be methyl methacrylate, such as " Perspex " (Registered Trade Mark), or polyethylene terephthalate, such as " Melinex " (Registered Trade Mark). The surface resistivity of the poorly conducting layer is preferably between 10<10> and 1011 ohms per unit square and may be comprised by sulphonated olefines, such as " Teepol " (Registered Trade Mark), condensations from higher aliphatic alcohol, such as " Lissapol " (Registered Trade Mark), or cellulose acetate. To coat the insulator its surface may be roughened before dipping into a solution of the coating material. As an alternative to roughening the surface the solution may contain dilute sulphuric acid. To form an electrical connection with the coating, the sheet is sprayed or painted along its edges with a colloidal suspension of silver in toluene to leave a silver deposit. Elsewhere, the sheet may be coated with a protective coat of insulator such as a silicone varnish. As shown in Fig. 1, a polarized membrane 1 of polyethylene terephthalate is tensioned in a frame 3 by heating and cooling, as described in Specification 838,021, and has layers 1a of the detergent " Teepol " and overlayers 1b of a silicone varnish. Signal electrodes 2 comprise perforated metal plates. As shown in Fig. 2 the polarized electrode comprises a perspex sheet 11 with coats 11a of " Teepol " covered by varnish. Membranes 12 of polyethylene terephthalate, possibly tensioned to different degrees to damp out resonances, are coated with aluminium. The loud-speakers may have more than three electrodes and utilize spacing elements as described in Specifications 838,023 and 838,024.
Patent GB-1401694-A (GB)
Title: Photographic apparatus
IPC: G03B17/52
Filed: 1972-07-03
Abstract: 1401694 Self-processing cameras EASTMAN KODAK CO 3 July 1972 [2 July 1971(3)] 31068/72 Heading G2X In a camera for use with self-processing film units 21 each comprising an image recording portion 23 strippably attached to a frame 22, each unit is exposed, developed and then passed over stripping fingers which slide into grooves 46 of the frame to separate it from the recording position. As shown, after exposure a transporter 69 is pulled out from the camera so that hooks 74 pull the exposed unit through rollers 75, 76 to rupture a processing agent pod 26 carried by the frame. Springs 82 on transporter 69 then push the processed unit towards the back of the camera against a surface 84. When the transporter 69 is pushed in again, the unit passes between a fixed guide 78 and resilient stripper fingers 89 which enter grooves 46 and are cammed by the ramps 48 at the ends of grooves 46 to separate the recording portion 23 and direct it through a slot 92; the frame being directed into the back of a cassette 49 containing the units 21. Fig. 10 (not shown) depicts minor modifications in the fingers (89') and grooves (46'). Figs. 11-13 (not shown) depict rigidly attached fingers (102) and spring guides (108). Figs. 19-20 (not shown) depict a similar arrangement in which the frame is deflected by contact with a cam surface (307) on the camera back. In Figs. 14-18 (not shown) pivoted fingers (289) have cams (297) which on engagement by the units pivot the fingers downwards to effect stripping. Figs. 21-27 (not shown) depict a similar arrangement.
Patent GB-778775-A (GB)
Title: Improvements in or relating to vehicle power units
IPC: B62M25/00
Filed: 1953-11-10
Abstract: 778,775. Vehicle driving gear. FICHTEL & SACHS AKT.-GES. Nov. 10, 1953 [Dec. 4, 1952], No. 31106/53. Classes 79(2) and 79(3). [Also in Group XXIV] A power unit for a cycle comprising an i.c. engine (not shown ) and a closed housing having a compartment A containing a change speed gear and a compartment B into which projects the output shaft 1 of the gear carrying a final drive sprocket, is converted for use with a vehicle having more than two wheels by the addition of a reverse gear in the compartment B between the shaft 1 and an additional shaft 7 carrying the final drive sprocket 12. As shown, the output shaft 1 in the converted unit is connected to a sleeve 2 rotatably carrying a gear wheel 5 and a chain sprocket 4, the wheel 5 meshing with a gear wheel 10 on the shaft 7 and the sprocket 4 chain-connected to a sprocket 11 also on the shaft 7, The shaft 7 is carried at 8a in a wall 8 of the change speed gear compartment A and at 9A in a cover 9 for the compartment B. The sprocket 12 is driven from the shaft 1 in either the forward or reverse direction by movement of a clutch member 6 on the sleeve 2 to engage the latter with either the sprocket 4 or gear wheel 5. The shaft 1 drives a speedometer 14 through a member 3. The sprocket 12 is connected with a driving road wheel by a chain (not shown) passing from the compartment B through a member 15.
Patent GB-1476935-A (GB)
Title: Elongational viscometers
IPC: G01N11/04
Filed: 1974-06-25
Abstract: 1476935 Measuring viscosity SANGAMO WESTON CONTROLS Ltd 25 June 1974 [29 June 1973]  31127/73 Heading G1S A method of measuring the elongational viscosity of a fluid comprises forcing the fluid from a reservoir 14 by compressed gas from a tube 18 along a tube 20 fixed to a rigid wall 12. The tube 20 has a nozzle 28 at its other end to spray a thread of fluid on to a rotating stainless steel drum 36 which elongates the thread and causes the tube 20 to flex about the wall connection. A guide 26 limits excessive flexure and a block 24 connected to a rigid strip 42 moves a rod 48 pivoted about 46 to operate a transducer 52 and a silicone oil damper 54. The diameter and velocity of the thread between the drum 36 and the nozzle 28 is measured, the former by a microscope, the rate of flow through 20 is measured, the fluid density is known, and from these parameters and using a known given equation the viscosity may be calculated.
Patent GB-1408668-A (GB)
Title: Control apparatus associated with a device for hermetic closure on an opening formed in a wall
IPC: E05F15/60
Filed: 1973-06-29
Abstract: 1408668 Operating mechanism for hermetic closure members BERNARD CALAIS SARL 29 June 1973 [3 July 1972] 31228/73 Heading E2M In an arrangement for the hermetic closure of an opening 1 in a wall 2, a leaf 3 slidably mounted on a rail 4 secured to the wall has two positions: a hermetic closure position in which seals around the leaf are pressed against the wall, and a position in which the leaf is raised out of engagement with the wall and is free to slide on the rail; a drive means provides the force to move the leaf between these positions and a linear electric motor moves the leaf along the rail. Primary 16a and secondary 16b elements of the linear motor are associated with the wall and leaf respectively. Guiding means (not shown) guide the leaf between the two positions and in the embodiment shown in Fig. 1 the drive means providing the upward force comprises a ram operated lever 6 having a roller 8 which engages an inclined surface 5 carried by the leaf. In this embodiment the linear motor elements are secured to the wall and to the leaf and cooperate only in the free sliding position of the leaf on the rail 4 (Fig. 2 not shown). At the ends of the rail 4 limit switches 17, 18 to stop the linear motor, and damping switches 19, 20 to reverse the motor current just prior to stopping are provided. In the embodiment shown in Figs. 3, 7 the elements 16a, 16b of the linear motor can slide over each other and are guided to cooperate in all positions of the leaf; Fig. 7 shows the leaf in the free sliding position. Element 16b is mounted along the length of the leaf, and element 16a is free to slide along a wall-mounted rail 36 between end stops 36a, 36b. A rod 34 links primary element 16a to a lever 32 which can pivot about an axis 33 on the wall and acts via a roller 35 to lift the leaf from its hermetic sealing position to its free sliding position. Fig. 3 shows the apparatus in the closed position with the leaf sealed to the wall on the right and element 16a against end-stop 36a. Power supplied to element 16a causes this element to move to the right along rail 36, pivoting the lever 32 to lift the leaf out of its sealing position (Fig. 4. not shown). When the leaf has been moved to its free sliding position element 16a is brought to rest against stop 36b and acts on element 16b to move the leaf in an opening movement to the left. To close the leaf power to the element 16a is reversed and the element slides along rail 36 to the left until brought to rest against stop 36a, in which position a latch 43 engages a lug 42 to lock the lever 32 (Fig. 5, not shown). Element 16a then acts on element 16b to move the leaf to the closed and sealed position on the right and a finger 44 on the leaf unlocks the latch 43 (Fig. 3). Each edge of the leaf is provided with a spring element which cooperates with a pneumatic damping device 46 in each limit position.
Patent GB-1360551-A (GB)
Title: Spray gun
IPC: B05B5/03
Filed: 1972-07-04
Abstract: 1360551 Spray guns ATLAS COPCO AB 4 July 1972 [4 Aug 1971] 31229/72 Heading B2F In a spray gun, gas discharges from a mouth 16 and impinges on a deflector 28. Material to be sprayed passes from an inlet 12 to an annular passage 26, under the control of a needle valve 13, and from there passes through grooves 22 into an annular chamber 25 formed between the end of the portion 19 and an annular deflecting surface 23 formed on the portion 20 so that the material is entrained by the gas flow. A surrounding annular orifice 38 is controllably supplied with gas to modify the spray outlet. The material may be electrically charged by an electrode 51 or a plurality of electrodes 52.
Patent GB-616333-A (GB)
Title: Apparatus for controlling the supply of heating and cooling medium to a crystallizer
IPC: B01D9/00
Filed: 1944-07-03
Abstract: 616,333. Fluid-pressure servomotor-control systems. DEHN, F. B. (Stearns-Roger Manufacturing Co.). July 3, 1944, No. 31243/46. Divided out of 598,052. [Class 135] In apparatus for controlling the heating and cooling of heat transfer fluid supplied to a crystallizer 16, the cycle of operation of the heating and cooling means is effected by timing means and means responsive to the temperature of the fluid supplied. The timing means comprises a cam 147 driven by a synchronous motor 149 acting through the cam follower 155, transmitter C, pneumatic receiver Rand bellcrank 156, and the means responsive to temperature comprises a coiled temperatureresponsive element 158, 159, actuating a bellcrank 160, both bell-cranks 156, 160 controlling the air jet 165 through link 161, lever 162 and the spring-loaded, pivoted valve member 164. Heat transfer fluid is continuously circulated to the drum 22 by the pump 113 in a closed fluid circuit through pipe 114, into and out of the drum, through pipes 60, 116, heat exchangers 122, 123 and pipe 118. Cooling medium is supplied to the exchanger 122 by pipe 124 controlled by the normally closed valve 125, while heating medium is supplied to the exchanger 123 by pipe 130 controlled by the normally open valve 132, the valves 125, 132 being opened or closed by diaphragms in chambers 168, 169 connected to the reversing valves 153, 154 electromagnetically operated by the timing means and controlling the flow of pressure air from the inlet 170. As shown, the cam 147 is allowing cooling medium to flow to the exchanger 122 and preventing heating medium from flowing to the exchanger 123. As the jet 165 is closed, pressure is built up in the bellows chamber 172 to open the valve 174, so that pressure air is admitted via valves 153, 154 to the diaphragm chambers 168, 169, thus opening valve 125 and closing valve 132. Pressure air also enters the bellows 177 which acts through the lever 162 to control the jet and produce a stabilizing action on the valve 174. As the follower 155 goes on to the cam surface 185, the cam 148 closes the switch 150 to reverse the valves 153, 154 and also to indicate, by a lamp 181, the initiation and duration of the heating portion of the cycle. The chamber 168 is closed to pressure air and opened to atmosphere via port 180 so that valve 125 stops the flow of cooling medium, while chamber 169 is closed to pressure air and opened to the atmosphere via the bleed port 176 so that valve 132 opens and allows heating medium to pass to the exchanger 123. The cam 188 closes the switch 189 to ring a bell 190 to indicate the termination of the reheating period governed by the cam surface 185. A recording thermometer 182 has a pen 184a which draws a line indicating the temperature of the mother liquor in the crystallizer 16. Specification 598,052, [Group III], is referred to.
Patent GB-292570-A (GB)
Title: Improvements in or relating to hornless loud speakers
IPC: H04R1/28
Filed: 1927-11-22
Abstract: 292,570. Brinkmann, F. June 24, 1927, [Convention date]. Loud-speakers. - A housing for a hornless loud-speaker comprises two perforated or equivalently formed, p a rtspherical shells 1, 2 secured together at their flattened edges 3. Lugs 4, 5 may be stamped out and bent up from the part 1 as shown so as to carry the diaphragm support 6 and telephonic unit 7.
Patent GB-716857-A (GB)
Title: Method for the production of ar-methylstyrenes
IPC: C07C5/327
Filed: 1952-12-11
Abstract: ar-Methylstyrenes are produced by mixing ar-ethyltoluene rich in the m- and/or p-isomer with steam superheated to at least 600 DEG  C. to form a vapour mixture having a reaction temperature between 550 DEG and 675 DEG  C. and approximating the optimum, and passing the mixture through a reaction chamber while externally heating the same to supply heat approximately equal to that consumed in the dehydrogenation which occurs and such as to prevent a change in temperature of the mixture of more than 15 DEG  C. during its flow through the reaction zone.  Preferably, superheated steam is passed through a jacket around the reaction chamber before mixing with the ethyltoluene.  Alternatively, hot combustion gases are passed through the jacket.  The ratio of steam to ethyltoluene by weight may be from 1-10 : 1.  Catalysts in solid or fluidized form may be present.  The optimum temperature varies with catalyst if used, steam ratio, and rate of flow, and can be determined by varying the reaction temperature until methylstyrene is formed in maximum yield, at least 75 per cent of the theoretical, and the conversion value is at least 20 per cent.  Contact time does not exceed 5 minutes and is usually from 0.1 second or less to 1 minute.  Reaction products are condensed, the organic layer separated and fractionated to recover m- and p-methylstyrenes. Comparative results are given for operation with and without external heating of the reactor.  The catalyst is mainly ferric oxide, zinc oxide, and sodium dichromate.  Steam at 750-800 DEG  C. heats the reactor, cooling to 625 DEG  C., and is mixed with m- and p-ethyltoluenes preheated to 450-500 DEG  C. to give a final temperature of 575 DEG  C. which is kept constant within 5 DEG  C.  Where combustion gases are used for the heating, the reactant mixture is at 598 DEG  C.  Specification 510,450 is referred to.
Patent GB-1009530-A (GB)
Title: Circuit arrangement for coupling magnetic logic devices
IPC: H03K19/16
Filed: 1962-08-17
Abstract: 1,009,530. Circuits employing bi-stable magnetic devices. STANDARD TELEPHONES & CABLES Ltd. Aug. 17, 1962 [Aug. 23, 1961], No. 31659/62. Heading H3B. Feed-back from storage core 4 to storage core 3 is prevented by interposing a tunnel diode 5 of the backward type having a characteristic shown by the line 2 of Fig. 1. The diode 5 is placed in the circuit with a polarity which, in the case of a normal diode would prevent current flow in the direction from core 3 to core 4. Because of the characteristic of the backward diode 5 a much larger current can flow from core 3 to core 4 than in the opposite direction. The diodes 6, 7 keep the positive voltage across the device less than x (Fig. 1). The cores may be conventional single cores, thin magnetic films or discrete regions of a ferrite block and the circuit is intended for use in logical circuits.
Patent GB-893900-A (GB)
Title: Improvements in or relating to 2,4-diamino-6-substituted-1,3,5-triazines
Filed: 1960-09-14
Abstract: 2, 4 - Diamino - 6 - substituted - 1, 3, 5 - tri - azines (guanamines) are prepared by condensing a salt of a cyanamide derivative, of the formula R.CO.NB.CN, wherein R.CO is an organic acid residue and B is a base, with a guanidine salt.  The process may be carried out at 150 DEG C.-240 DEG C. in the presence of an inert diluent and under reduced pressure.  Cyanamide salts include the sodium, potassium and calcium salts.