baber/WOPTO huggingface dataset:
Patent GB-313776-A (GB)
Title: Improvements in or relating to gas holders
IPC: F17B1/14
Filed: 1928-07-07
Abstract: 313,776. Matthews, F. G., and Matthews, R. C. July 7, 1928. Siphons.-A siphon for use with gas holders in which the seals are covered with oil to prevent corrosion of the metal parts consists of a metal box having a middle partition G extending nearly to the bottom so as to divide it into two compartments, the right hand compartment being provided at its upper part with a pipe A extending to below the surface of the seal and the left-hand compartment being provided with an overflow aperture B discharging into a funnel C connected to a drain pipe D. The metal box is provided with a charging plug E and an emptying plug F.
Patent GB-734598-A (GB)
Title: Improvements in or relating to the preparation of hydroxy aromatic carboxylic acids and salts thereof
Inventor: HARTLEY JAMES
IPC: C07C51/15
Filed: 1952-08-07
Abstract: A process for preparing alkali metal salts of hydroxy aromatic carboxylic acids comprises reacting an alkali metal phenoxide with carbon dioxide under substantially anhydrous conditions until a major proportion of the phenoxide has been converted to the alkali metal salt of the hydroxy aromatic carboxylic acid, reacting this first carboxylation reaction mixture with an alkali metal, alkali metal hydroxide or alkali metal alkoxide, removing any water or alcohol formed and reacting the resultant mixture with carbon dioxide under substantially anhydrous conditions to produce a further quantity of the alkali metal salt of the hydroxy aromatic carboxylic acid. Suitable starting materials are sodium and potassium salts of phenols and polynuclear phenols containing at least one hydroxy group and optionally containing further nuclear substituents such as hydrocarbon radicals, halogen atoms, amino, nitro, ether, carboxylic and sulphonate groups, for example ortho-, meta- and para-cresol, mono- or di-alkyl phenols having preferably 8 to 18 carbon atoms per alkyl group, 2- and 4-hydroxydiphenyl, para-benzylphenol, 1 : 2- and 1 : 4-dihydroxybenzene, 1- and 2-naphthol, 5 : 6 : 7 : 8-tetrahydro - 2 - naphthol, 1 : 2 - and 1 : 5 - dihydroxy naphthalene, 1- and 2-anthrol.  The process may be modified by further treating the second carboxylation reaction mixture in the same manner as the first.  Preferably 0.9 to 2 (and more preferably 1.4 to 1.6) chemical equivalents of alkali metal, hydroxide or alkoxide are reacted with one equivalent of hydroxy aromatic carboxylate (calculated as the mono-alkali metal salt) in the first or second carboxylic reaction mixture.  The alkali metals are preferably sodium or potassium, or mixtures of sodium and potassium, or of their hydroxides or alkoxides.  Alkali hydroxides are preferably used either in solid form or in aqueous solution.  The reactions with carbon dioxide are preferably effected: (1) in a neutral or basic solvent such as an aromatic hydrocarbon (e.g. xylene); (2) at a temperature of 100-300 DEG  C. (preferably 120-180 DEG  C.); and (3) at a pressure of from atmospheric to 2000 p.s.i.g. (preferably 75 to 300 p.s.i.g.).  The products may be subsequently converted to the free acids by any known method, such as treatment with a mineral acid (e.g. sulphuric acid) followed by extraction from the acidified mixture with an organic solvent such as an aliphatic or aromatic hydrocarbon.  The examples describe the carboxylation of mixtures of di-alkylphenols having 8 to 13 carbon atoms per alkyl group, and of mixtures of mono- and di-alkylphenols having 14 to 18 carbon atoms per alkyl group. Specification 734,605 is referred to.
Patent GB-419765-A (GB)
Title: Improvements in and relating to switch mechanism particularly for prepayment electricity meters
IPC: G07F15/00
Filed: 1933-07-14
Abstract: 419,765. Snap-action switches; prepayment mechanism. HOLDEN, F., and MEASUREMENT, Ltd., Terminal House, Lower Belgrave Street, London. July 14, 1933, No. 19945. [Class 38 (v).] A snap-action switch for a prepayment electricity meter comprises an arm a pivoted at b and connected by a link c with a lever d pivoted at e and having a torsion spring f for returning it to the central off position shown. Also pivoted at b is a contact arm m having flat shoulders 6, 7 which co-operate with a spring-biassed pressure member 8 to bias the contact arm to the central off position shown. A bell-crank lever h is pivoted at i to the arm a and has a hooked end for engaging an extension t of the contact arm m. The lever h also carries a pin n which engages in a slot o in a spring-biassed catch lever p pivoted at q and having a tooth s for engagement with the extension t of the contact arm. A pawl u is pivoted to the arm a and is arranged to cooperate with a fixed rack v. The pawl has a compression spring w so arranged that the pawl tilts to one side or the other but cannot stay in the middle position. In operation, the lever d is turned anticlockwise through the prepayment mechanism moving the arm a to the right. As soon as the bell-crank lever leaves the stop j, its hooked end engages the extension t of the contact arm which thus moves to the right. The pin u allows the catch p to fall so that at the end of its movement the contact arm is held by the tooth s. During the stroke the pawl u prevents return of arm a, but at the end the pawl strikes a stop y which tilts it the other way to free the arm whose movement is limited by a stop z. The arm a returns alone until lever h meets stop j and tilts causing pin n to lift lever p and free the contact arm which then flies past the central position until its extension t is held latched by a spring latch 2 which can be released by the prepayment mechanism. The return movement of arm a is limited by stop g and a stop x engages pawl u to reverse it into its operative position. A contact, not shown, is carried by the contact arm m and when latched by latch 2 engages a fixed contact not shown.
Patent GB-1466360-A (GB)
Title: Electronic timepiece
IPC: G02F1/03
Filed: 1974-05-07
Abstract: 1466360 Electronic timepieces: controlling light SOC SUISSE POUR L'INDUSTRIE HORLOGERE MANAGEMENT SERVICES SA 7 May 1974 [25 May 1973] 19969/74 Headings G2F and G3T An electronic timepiece comprises a time-base, a control circuit, a voltage source and a voltage amplifier, and an electro-optical display using a monocrystalline solid 1 which is normally transparent but which has its optical birefringence reversibly altered by voltages applied to electrodes 2, 3 on opposed surfaces of the solid. As shown the electrodes produce a field transverse to light rays L, L1, but transparent electrodes producing a longitudinal field may be used. The crystal 1 shown is anisotropic and is located between a reflecting or diffusing surface 6 and a second crystal 7 which compensates for the natural birefringence of the crystal 1, a polarizer 8 being added. When a voltage of suitable magnitude is applied to the electrodes, the return beam L1 is polarized at right angles to polarizer 8 and is cut off. Alternatively the system as a whole may be transparent when energized. The polarizer may include a colour filter and two polarizers may be used Figs. 3 and 5 (not shown); the compensating crystal 7 may be omitted. A number of suitable crystal materials are specified and the crystal(s) may be isotropic, either the Pockels or the Kerr effect being used.
Patent GB-201936-A (GB)
Title: Improvements in casings for toothed gearing for locomotives or similar vehicles and other purposes
IPC: B61C9/30
Filed: 1923-08-03
Abstract: 201,936. Aktiebolaget Ljungstr÷ms Angturbin. Aug. 3, 1922, [Convention date]. Gear boxes.-A gear casing for toothed gearing for locomotives and similar vehicles or for other purposes is constructed with its lowermost part wholly or partly resilient or of softer material than the remaining part to enable a gear wheel of larger diameter to be used without reducing ground clearance. In the case of a toothed reduction gear from a turbine to i;he axle 11 of a locomotive, the gear casing 15 is provided at its lower part with an elastic cover 16. The elasticity of the lower part may be obtained in various ways, as for instance by making that part of the casting thinner. The advantage is thus obtained that a smaller clearance may be left between the lowest gear wheel and the bottom of the casing since dirt and foreign particles collecting and forming a hardening encrustation would cause the casing to yield before damage to the teeth could occur.
Patent GB-1536745-A (GB)
Title: Method of knitting and a flat-bed knitting machine
IPC: D04B15/86
Filed: 1976-05-14
Abstract: For the program-controlled selection of the knitting needles on a flat knitting machine, preferably a hand-operating knitting machine, a program carrier (1) containing the needle-selection program is scanned in steps by means of a scanner (2). Digital signals are formed from the electrical signals obtained thereby and from further scanning pulses generated during the movement of the scanner along the needle-selection program, and a specific number of these digital signals are fed to a short-time memory. During each step of movement of a carriage carrying the needles, those signals are read out from the short-time memory which are assigned to specific needles to be actuated at the stopping points of the carriage. By means of the pattern-knitting device designed for carrying out this method, it is possible to work with a program carrier, on which the pattern to be knitted can be recorded in a simple way in terms of both size and shape. <IMAGE>
Patent GB-1523043-A (GB)
Title: Dowel pin and socket combinations for making stump models in dentistry
IPC: A61C9/00
Filed: 1976-05-14
Abstract: 1523043 Dentistry pins R SAUTER 14 May 1976 [15 May 1975] 20094/76 Heading A5R A pin and socket assembly for fixing model teeth into a model jaw comprises a socket having a generally cylindrical bore and an external annular groove and a pin having a roughened section located outside the socket in use, the pin and socket bore having cooperating flats to prevent rotation between the pin and socket.
Patent GB-1143141-A (GB)
Title: A method of producing cardiac defibrillation electric pulses and a cardiac defibrillator for carrying out the method
IPC: A61N1/39
Filed: 1966-05-06
Abstract: 1,143,141. Cardiac defibrillators. R. R. KEMDEN. 6 May, 1966 [17 May, 1965], No. 20153/66. Heading A5R. An alternating current cardiac defibrillator comprises electrodes 84, 86 which are connected intermittently through a step-up transformer 12 to an alternating current source for periods of less than 100 milliseconds by a relay switch 74 controlled by a timing circuit 10, so that pulses having the same wave form as the alternating current source and a duration of less than 100 milliseconds reach the electrodes. The transformer 12 steps up a mains alternating voltage of 110 volts to 480 volts r.m.s. The timing circuit is energised through a transformer 14 and includes a rectifier 24. On operating a switch 38 to close contact 36, a capacitor 34 is connected across the rectified voltage and, as it charges, transistor amplifiers 52, 56 conduct to operate relay 74 for a time determined by the time constant of the capacitor. The capacitor is discharged to reset the timing circuit by operating the switch 38 to close contact 42, thus short-circuiting the capacitor. Alternatively, the timing circuit may 'be operated by a signal derived from the heart, e.g. the R-wave of an electrocardiagram.
Patent GB-299523-A (GB)
Title: Wire drawing apparatus
IPC: B21C3/12
Filed: 1927-07-29
Abstract: 299,523. Beatty, W. E., (Bell Telephone Laboratories, Inc.). July 29, 1927. Chucks.-A wire-drawing die 54 is held in a block 36 screwed to the rotary die holder 24 by symmetrically disposed radial spring fingers 44 which grip and centre the die while the wire is being drawn. but which eject the die from the block when the) end of the wire has passed.
Patent GB-1247056-A (GB)
Title: Vehicle transmission system with hydrodynamic braking
Inventor: PISTL GUSTAV
IPC: B61C17/12
Filed: 1968-09-11
Abstract: 1,247,056. Controlling variable-speed transmissions. VOITH GETRIEBE K.G. 11 Sept., 1968 [10 July, 1968], No. 20272/71. Divided out of 1,247,055. Heading F2D. The description is substantially identical to that of Specification 1,247,055, but the claims are directed to the torque-limiting pressure relief valves.
Patent GB-682243-A (GB)
Title: Rope railways
IPC: B66C21/00
Filed: 1949-08-04
Abstract: 682,243. Overhead-travelling hoists; rope railways. BATEMAN, N. S. Aug. 4, 1949. No. 20283/49. Classes 78 (iv) and 104 (ii). The carriage of a rope railway of the type in which the manipulatiun of a load handling device suspended from a carriage running on a cable between head and tail towers, and the traversing of the carriage, are controlled through endless transmission and conveying cables respectively, from motors located at the head tower, comprises a truck unit adapted to ride a track cable and consisting of a plurality of twowheeled trucks, frame structures uniting the trucks in endwise aligned pairs and suspended from the respective pairs, each truck having a pivotal connection with its structure whereby the trucks may rock individually in the plane of the track cable, and a beam member having a single point pivotal connection with each of said frame structures, and includes a hanger unit pivotally suspended from said beam member, and a load drum and sheave mounted on said hanger unit. The carriage of the rope railways illustrated comprises four two-wheeled bogie units 3, 4, 5, 6 the side plates 7 of which are pivoted at 9 to beams 10, 11 which are pivoted in turn at 12 to a main beam 13, 14. The truck unit D carries sheaves 28 to 33 which transmit power from lines 53, 61 to drums 41, 42 for operating lifting and other means on the unit. The line 53 passes around the sheaves 30, 29, 28 the first two of which are free on their shafts 36, 35 while the last is fast on its shaft 34 which carries at each end a sprocket (not shown) connected through a chain 47a to drive a sprocket 45 fast on the same shaft the drum 42. Each sheave is provided on its flanges with teeth by means of which the sheaves 30, 29 assist in driving the sheave 28. Similarly the line 61 passes around the sheaves 33, 32, 31 connected by gear teeth 38, the sheaves 33, 31 being free on their shafts 36, 39 while the sheave 32 is fast on its shaft 35 winch is connected by chain and sprocket gearing to drive the drum 41. The drum 41 operates a rope 46 which is dead-ended at 51 to the frame of the hanger unit D and passes under a pulley 50 on a grab bucket 49 which it serves to raise and lower. The rope 48 operated by the drum 42 is dead-ended on the of the hangar unit at 52 and operates the opening and closing mechanisms of the grab. The lines 53, 61, and the line 24 by which the carriage is moved along its track A, are endless. the return run of the line 34 heing engaged by a pulley 23 on the truck unit C to provide an upward force on the carriage reducing the sag. In alternative constructions the two trains of sheaves 28, 29, 30 and 31, 32, 33 are replaced by a single train operated by a single line and driving drums such as 41, 42 on which are wound opposite ends of a single rope supporting a fall block in its bight. Another construction provides only a single load drum which may be mounted centrally on the hanger unit.
Patent GB-1346815-A (GB)
Title: Suspension strut
IPC: B60G15/12
Filed: 1971-04-19
Abstract: 1346815 Hydropneumatic self-levelling units F M ALLINQUANT and J G ALLINQUANT 19 April 1971 [26 Jan 1970 29 July 1970] 20393/71 Heading F2S A hydropneumatic piston-cylinder selflevelling unit comprises a hydropneumatic suspension chamber 79, 38, 39 bounded by the piston 67, a liquid containing chamber 75, and a store 58 of liquid under pressure (gas in chamber 66), reciprocation of the piston 67 above level control ports 49a (Fig. 3) pumping liquid from the chamber 75 past a valve member 69 into the suspension chamber 79 to extend the unit until the ports 49a are uncovered by the piston 67, liquid then flowing from the suspension chamber 79 through these ports into an annular chamber 49 and past a flap valve 53 into the chamber 75 (via 61, and port 81) and, when this is full, into the store 58 (via 48a, 48b, 57a, Fig. 3). Damping independent of the self-levelling action is provided by passageways in a partition 25. As the piston 67 is sinking towards the predetermined level A as a result of the above pumping action, the available volume of the liquid chambers 79 and 75 increases due to the loss in piston-rod volume, and so liquid passes out of the store 58 into the chamber 75 (via 57, 47a, 47, valve 53a annular chamber 49 and ports 49a-which are below the piston at this stage). When the piston reciprocates below the predetermined level A; on downward movements liquid passes from the chamber 75 to the chamber 79 past valve member 69, and on upward movements liquid passes from the chamber 79 into the chamber 75 and, when this is full, into the store 58 (via the ports 49a, which are above the piston at this stage, 49, 53 and then 61, 81 or 48a, 48b, 57a respectively). This results in a net transfer of liquid from the suspension chamber 79 to the store 58 and so the piston rises until it reaches the predetermined level A. When the piston reciprocates about the predetermined level A the ports 49a are closed by the piston, and liquid flows out of the store 58 to the chamber 75 (via 53a, 49, 53, 50, 61, and port 81), and also from the chamber 75 into the suspension chamber 79 past valve member 69. The net result is that the pressure in chamber 79 increases and forces the piston down to uncover the ports 49a. In the event of a sudden overpressure in the chamber 79, valve member 76 opens an escape path through the piston. In Fig. 5 (not shown), the ports 49a are replaced by three axially spaced sets of ports (1, m, n,) and the valve members 53 and 53a are replaced by a valve member (g) in series with a throttle (i), and a valve member (d) respectively. The position of the gas and liquid chambers in the annular part of the suspension chamber and in the storage chamber may be reversed, i.e. the gas chambers 39 and 66 may be on the outside (not shown).
Patent GB-373833-A (GB)
Title: Improvement for producing copies on typewriting machines
IPC: B41J35/35
Filed: 1931-07-16
Abstract: 373,833. Ink - ribbon mechanism. CATTANEO, E., 1, Pasquale Lucchini, Lugano, Switzerland. July 16, 1931, No. 20402. [Class 100 (iv).] In a duplicating-attachment for typewriters, supplementary ink-ribbons are supported on rotatable arms mounted on vertically adjustable rods on a frame which is vertically and horizontally adjustable on the carriage. In the arrangement shown in the Figure, angle-plates 3 are adjustably secured to the carriage and bear bow-shaped members 1, whose height is adjustable by the slots 2. A rod 10, passing through slots 8 in the members, can be fixed at different heights by notches 9. Tension springs 12 keep the rod in the notches and slides 13 are provided to prevent the springs jamming. On the rod 10 are pairs of arms 15, different pairs of different lengths, and on each pair is mounted an ink ribbon 19, engaged by teeth 17 on the end portion 16 of the arms. A ribbon can then be placed between each pair of sheets used for duplicating.
Patent GB-148451-A (GB)
Title: Improvements in or relating to arc lamps for search lights
IPC: H05B31/18
Filed: 1920-07-10
Abstract: 148,451. Optische Anstalt C. P. Goerz Akt.-Ges. Oct. 14, 1918, [Convention date]. Arc lamps.-In a search-light, graphite lubrications is applied to the carbons where they slide through electrode heads, and also, if desired, at the driving-rollers. The electrodes may, for instance, be thinly coated with graphite by rubbing; or the graphite may be put on through the walls of the electrode heads. Wear on the electric contacts and driving rollers, and strain on the regulating mechanism, are thus reduced.
Patent GB-148530-A (GB)
Title: Improvements in antenna systems for receiving electric waves
IPC: G01S1/02
Filed: 1920-07-10
Abstract: 148,530. Ges. f³r Drahtlose Telegraphie. June 18, 1918, [Convention date]. Aerials; directive wireless signalling; bearings, determining.-In directive reception using a tuned magnetic loop aerial B, the customary ambiguity of 180 degrees is avoided by the use of an open antenna A tuned to the frequency of the waves being received. The antenna A has a screening effect, when interposed between the loop B and the sending station weakening the current in the loop B, and when in a position on the far side of the loop intensifying the current therein. The system can also be utilized in eliminating interference by tuning the antenna A to the disturbing wave and interposing it between the loop aerial and the interfering station. A formula for the resistance of the antenna A in terms of its height and distance from the loop B is given in the Specification.
Patent GB-1425242-A (GB)
Title: 4,6-bis-alkaryl-s-traizines
IPC: C07D251/24
Filed: 1973-04-30
Abstract: 1425242 4,6 - bis - (Alkanyl) - s - triazines CIBA-GEIGY AG 30 April 1973 [1 May 1972] 20571/73 Heading C2C The invention comprises 4,6-bis-(alkaryl)-striazines of the Formula I: wherein R is a hydrogen atom or an alkyl, aryl, amino, carboxyl or diarylamino group or a nitrogen-containing heterocyclic group attached to the triazine ring via a nitrogen atom and Y is a di-C 1-4  alkyl substituted-phenyl or naphthyl group. The compounds of Formula I may be prepared by either reacting one mole of a substituted dichloro-s-triazine of the formula with two moles of a dialkyl substituted aromatic compound of the formula HY in the presence of aluminium chloride, or when R is aryl by reacting two moles of a dialkyl substituted aromatic nitrile of the formula YCN with one mole of an aroyl chloride of the formula RCOCl wherein R is aryl in the presence of aluminium chloride and ammonium chloride.
Patent GB-460192-A (GB)
Title: Improvements in or relating to chassis frames for vehicles
IPC: B62D21/00
Filed: 1935-07-19
Abstract: 460,192. Chassis frames. PRESSED STEEL CO., Ltd., and SWALLOW, W. July 19, 1935, No. 20576. [Class 79 (iv)] A chassis frame or underframe, particularly for vehicles with independently sprung wheels, comprises side frame members conforming substantially over a portion of their length to the body side sills to be supported thereby and at their forward and/or rearward ends being directed inwardly to meet in the median longitudinal plane of the vehicle, with transverse bracing members interconnecting the side frame members in the region of inturn thereof, to present true triangulated structures strongly resistant to torsion. In the form shown, the transverse bracing members 18, 19 are attached to the side members by means of plates 22, 23 or extension pieces 24, 25. At the rear end, the inwardly directed frame members 16, 17 are formed with enlarged upstanding portions 26 housing the differential 27 and constituting a central support for transverse suspension springs RS. The front wheel independent suspension system FS is anchored to the chassis frame in the region of the transverse bracing member 18. The cross-sections of the frame members may be of any of the forms shown in Fig. 5. Various forms of frame, triangulated at one or both ends, with or without a rectangular intermediate portion, are diagrammatically illustrated.