baber/WOPTO huggingface dataset:
Patent GB-1095882-A (GB)
Title: Substituted isochromans
IPC: C07D455/03
Filed: 1965-02-12
Abstract: Novel isochromans of Formula I <FORM:1095882/C2/1> <FORM:1095882/C2/2> where R1 = R2 = OMe or OEt; R3 = H, Me or CH3OCH2-; and X1 = H, Cl, Br or I are prepared by reacting a phenylacetic acid of Formula II, where R = H and X = Cl. Br or I, with methoxychloromethane in the presence of a Lewis acid, or with formaldehyde in the presence of sulphuric acid.  In a modification a C1- 6 alkyl ester of the acid II is used (R = C1- 6 alkyl) and the subsequent product is subjected to alkaline hydrolysis.  Products in which X1 = H are prepared by reacting those in which X1 is halogen with a reductive dehalogenating agent such as zinc in an alkaline medium.  In Example 3, 2-bromo-4,5-dimethoxyphenylacetic acid is prepared by bromination of 3,4-dimethoxyphenylacetic acid in acetic acid and converted to its methyl ester.  This is reacted with methoxychloromethane/ZnCl2 to give methyl 2 - bromo - 3 - chloromethyl - 4,5 -dimethoxyphenylacetate which is treated with Zn in acetic acid to give methyl 2-bromo-3-methyl -4,5-dimethoxyphenylacetic acid.  In Example 4, methyl 2 - bromo - 4,5-dimethoxyphenylacetate is reacted with methoxychloromethane/ZnCl2 to give a mixture of methyl 2-bromo-3- and 6-chloromethyl-4,5-dimethoxyphenylacetates, the former being isolated. The mixture is treated with methanolic NaOH, whereupon, the 6-isomer yields an isochroman of Formula I, while the 3-isomer forms, after acidification, 2-bromo-3-methoxymethyl - 4,5 - dimethoxyphenylacetic acid, which is converted to its methyl ester with diazomethane.
Patent GB-545464-A (GB)
Title: Motor fuel
IPC: C10L1/02
Filed: 1940-10-24
Abstract: 545,464. Motor fuels. STANDARD OIL DEVELOPMENT CO. Oct. 24, 1940, No. 15644. Convention date, Oct. 31, 1939. [Class 91] Gasoline hydrocarbons for use as high antiknock motor fuels are blended with an unsaturated ether of the formula R-O-R<SP>1</SP>, in which R represents an aliphatic olefinic radicle and R<SP>1</SP> the same or a saturated hydrocarbon radicle containing more than two carbon atoms. Preferably the double bond in the olefinic radicle is as close as possible to the ether oxygen, and one or both of the hydrocarbon radicles of the ether is a branched aliphatic hydrocarbon residue. Examples of R are vinyl, allyl, -isopropenyl and methallyl, whilst R' may in addition be propyl, isopropyl, cyclohexyl and amyl. Ethers specified are divinyl, dimethallyl, vinyl phenyl, vinyl methallyl, vinyl propyl, vinyl isopropyl, isopropenyl phenyl, methallyl cyclohexyl and methallyl m-cresyl ethers. The Specification as open to inspection under Sect. 91 also describes the addition of ethers in which R and R, represent hydrocarbon radicles, either like or unlike, at least one being an aliphatic radicle containing doubly-bonded carbon atoms. Either may contain a substituent such as an amino or hydroxyl group. Additional examples mentioned are the vinyl ether of ethylene glycol, aminoisopropyl methallyl ether and aminoamyl vinyl ether. This subject-matter does not appear in the Specification as accepted.
Patent GB-1499244-A (GB)
Title: Fluid metering device
IPC: G01F11/04
Filed: 1976-04-15
Abstract: 1499244 Metering device J LANGLAIS 15 April 1976 [23 April 1975 12 Feb 1976] 15735/76 Heading B8N A fluid metering device with an inlet pipe 32 and a delivery pipe 34 has a rotatable or oscillatory distribution unit with a pair of cavities 44, 47 selectively coupled to the pipes and a piston 18 which is pressurized on alternate sides by the fluid entering the device. The distribution unit has a tubular extension 40 leading to the chamber defined between the upper part of the casing and the piston and an opening 48 leading to the chamber defined between the piston 18 and the distribution unit. In operation fluid supplied through pipe 32 flows to one side of the piston to displace it and discharge the fluid on the other side of the piston. The distribution unit is then rotated to connect the inlet pipe 32 to the other cavity of the unit for dispensing from the other side of the piston.
Patent GB-835019-A (GB)
Title: Apparatus for protection of electrical equipment
IPC: H01H51/10
Filed: 1956-05-22
Abstract: 835,019. Protective cut-out systems; electrically released switches; electromagnetic switches. DOMECQ, J. L. May 22, 1956 [May 23, 1955], No. 15822/56. Class 38 (5). The metallic framework enclosing electrical equipment is earthed (or connected to neutral) through a coil, which when energized operates contacts to short-circuit itself by a lower resistance circuit and to interrupt the main supply. In Fig. 4, a terminal 30 is connected to the framework of the equipment and a terminal 31 to earth. They are permanently connected together through a coil 29 which on leakage attracts an armature 36 on a pivoted lever 33 having pivoted at 39, a shorting contact 37 for contacts 30, 31. In the unoperated position a contact 38, also pivoted at 39, connects contacts 45, 46 for the contactor coil circuit of the main supply. When the lever 33 is moved by the armature 36 a roller 40, on pivoted latch 42, passes from the end to the side of the lever and under the action of a spring 44 maintains contact pressure at 37 and holds the lever in the operated position. The lever 33 is reset by a spring 35 when a push-button 47 is pressed to return the latch 42 to the position shown. The arrangement can be tested by a push-button 51. Further contacts energize audible and visible alarms. In Fig. 6, when an armature 74 is attracted to a coil 79, a latch 73 releases a roller 70 so as to allow a spindle 59 to rotate under the action of a spring 72 and close contacts 63, 68 connected to framework and earth, and open the main control contacts 60, 61, 611. Resetting is by push-button action in the direction of arrow 83 and testing by push-button action in the direction of arrow 82. In Fig. 8, the frame to earth short-circuiting contacts 123 are carried on a lever 106 co-pivoted with an armature 104 at 105. Armature 104 has a hook 113 to pull the lever 106 with it when it is attracted by coil 102. When a roller 117 on lever 106 passes the corner between surfaces 119, 120 of latch 115, the action of spring 116 on latch 115 drives cam surface 120 against roller 117 to complete the contact closing action of lever 106 which also operates the spring-loaded auxiliary contacts in casing 122. A spring-loaded pushbutton rod 128 resets the latch 115 and lever 106 and the armature 104 is reset by a spring 107. The armature may also be retained by a coil in the leakage circuit (Fig. 2, not shown) and in a further arrangement, as applied to a single phase and neutral circuit, terminal 4 is taken to the neutral instead of the earth connection so as to blow the main fuses (Fig. 3, not shown). Fig. 10 (not shown) shows a modification wherein the coil is in a local circuit completed by a relay connected between earth and frame terminals.
Patent GB-886248-A (GB)
Title: Improvements in or relating to centrifugal pumps
Inventor: EDWARDS MILES LOWELL
IPC: F04D9/00
Filed: 1958-05-16
Abstract: 886,248. Centrifugal pumps. EDWARDS, M. L. May 16, 1958, No. 15835/58. Class 110 (1). In an impeller for a centrifugal pump comprising blades projecting from a back plate, the back plate is shaped to provide orifices on the trailing sides of the blades and to allow liquid at the leading sides of the blades to flow past the orifices to entrain vapour or gas through the orifices from between the blades, portions of the back plate extending from leading edges of the blades to points on the blades adjacent the orifices. In the submersible centrifugal fuel pump shown in Fig. 1, the impeller back plate 52 is cut away as shown in Fig. 3 to form projections 53 adjacent each impeller blade. Preferably, a kink 62 is provided in each impeller blade, fading out towards the bottom edge of the blade. The inlet portion of each impeller blade between the leading edge 51 and the kink 62 is shaped to provide an axial component of motion towards the back plate 52. A jet of liquid passes upwardly along the pressure face 60 of each impeller blade at the kink 62 and through the adjacent cut-away part of the back plate 52 towards a stationary diffuser 40, thereby exerting an ejector effect at an orifice 64 to entrain and remove gas or vapour accumulating at the opposite face 61 of the blade. After passing through the diffuser 40, the mixture of liquid and gas or vapour escapes into the fuel tank 11.
Patent GB-390671-A (GB)
Title: Improvements in or relating to ice-making boxes or trays
IPC: F25C1/24
Filed: 1932-06-06
Abstract: 390,671. Ice-making. TEVES, A., 23, Gustavsburgstrasse, Frankfort - on - Main, Germany. June 6, 1932, No. 16005. Convention date, Aug. 10, 1931. [Class 29.] An ice-making box or tray is provided with a hollow jacket and hollow-walled partitions charged with a freezing solution. Cold accumulated in the solution, when frozen, is rapidly transferred to the compartments of the box.
Patent GB-470131-A (GB)
Title: Improvements in modulated carrier wave receivers
IPC: H03D3/22
Filed: 1936-06-08
Abstract: 470,131. Wireless receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 8, 1936, No. 16035. Convention date, June 6, 1935. [Class 40 (v)] Comprises a phase or frequency modulated receiving system in which demodulation is effected by means of a multi-grid valve, the retarded signal being applied to one grid and the unretarded signal to another. In the form shown in Fig. 2, the signal is fed through an intermediate frequency amplifier and bandpass filter to a retardation network 6 loaded with an adjustable resistance R. Tappings are taken from the beginning and part of the way along the network to grids G1, G2, of a valve 8 which operates as a detector, and feeds an audio frequency amplifier 9 through a resistance condenser coupling unit 15. The unit 15 may be replaced by a low-pass filter. In a modification shown in Fig. 1, the retardation network is formed by a filter 33 having a sloping characteristic. Here the signal is fed through an intermediate frequency amplifier 3, 5 and if desired through a frequency multiplier 26 and second detector 27, to amplifier valves 30, 31. The valve 30 feeds grid G1 through the filter 33 and the valve 31 the grid G2 through an impedance 34 and condenser 36. In a modification of this, to remove amplitude distortion due to the sloping characteristic of the filter 33 two valves 8 having a push-pull output are employed, the grid G1 of the second valve being fed through a filter which slopes in the reverse direction to that feeding the first. With this arrangement amplitude modulation may be received by changing the output connections of the valves 8 from push-pull to series. Specification 448,448 is referred to.
Patent GB-160616-A (GB)
Abstract: 160,616. British Thomson - Houston Co., Ltd., (General Electric Co.). Jan. 19, 1920. Blades, fixing. The rotor rim 3 is provided with concentric shoulders 6 on one side face engaging with similar shoulders on the roots 12 of the blades 5. Caulking-pieces 17, 11 finally secure the blades in position, being driven in undercut recesses in the rim and blade roots respectively. A caulking- strip may be employed for each blade, or one strip may be employed for two or more adjacent blades. The engaging shoulders 6 are bevelled as shown.
Patent GB-402479-A (GB)
Title: Improvements in or relating to the adsorption of gases or vapors
IPC: B01D53/02
Filed: 1932-06-07
Abstract: <PICT:0402479/III/1> Condensible gases or vapours are removed from gaseous mixtures by passing them successively into contact with two batches of adsorbent such as silica gel, conditioning the mixture to activate one batch and charge the other with the condensible components, removing any condensible gases in passing between the batches, and periodically reversing the position of the batches in the circuit.  According to the arrangement shown, the gas mixture, for example moist compressed air, enters by pipe 15 and is heated by the steam heater 17, its relative humidity being lowered.  It is then passed by suitable valves through the adsorber 10 which contains partially saturated absorbent from a prior operation.  The heated air takes up the mixture in the absorbent until it is saturated, thus activating the adsorbent. The air is then passed via the pipe 22 through the cooling jacket 31 where it is cooled sufficiently to cause the moisture to condense.  The condensed moisture is removed by the trap 25 and the air is then passed via pipe 27 to the adsorber 11 containing adsorbent activated in a previous operation, so that final traces of moisture are removed, and dry air is discharged through pipe 41.  When the adsorbent in adsorber 11 is saturated, the position of the adsorbers in the cycle of operations is reversed by suitable valve means.  The activated adsorbent, e.g. in adsorber 10 in the above example, may be cooled after activation by shutting off steam in the heater 17 or bye-passing the heater by means of pipe 36. This elimination of heating may be performed at the latter end of the activating cycle.  More than two adsorbers may be used, and the spare adsorbers may be cooled by radiation or a cooling fluid, or they may be placed in the stream of effluent dried air, which may be previously cooled.  The process may be applied to the dehydration of compressed air, atmospheric air or other gases, and the recovery of volatile solvents.  Where the gas mixtures are at an elevated temperature, the heater 17 may be reduced in size or omitted.
Patent GB-725395-A (GB)
Title: Improvements in vacuum cleaner nozzles
Inventor: MEYERHOEFER CARL ECKHARDT
IPC: A47L9/06
Filed: 1953-06-11
Abstract: 725,395. Suction cleaner nozzles. LEWYT CORPORATION. June 11, 1953, No. 16142/53. Class 8 (1). [Also in Group XXIII] A vacuum cleaner nozzle mouth is divided by two longitudinal partitions 13, 14, Fig. 3, into front and rear compartments housing floor contacting rollers 17, Fig. 2, and a brush 28 respectively, and a central compartment open to a suction outlet duct 11. The partition 13 which includes a central bowed portion 13<SP>1</SP> is supported from the front wall of the nozzle body 10 by webs 15 some of which carry bearings 16 for the rollers 17 whilst the remaining webs provide sockets 21 for screws 20 of a sole plate 19 covering the front. and centre compartments except for a central wide suction slot 23, narrow suction slots 24, and apertures 22 through which the rollers 17 project. The brush 28 is spring-biassed against retaining members 30 at the ends of the rear compartment.
Patent GB-277447-A (GB)
Title: Improvements in or relating to the protection of electrical apparatus from overloads
IPC: H01H71/44
Filed: 1926-06-26
Abstract: 277,447. Tinsley, H., and Cox, J. H. June 26, 1926. Controllers with overload release. - A starter having an overload release is displaced from a starting to normal running position by electromagnetic means under the control of a time lag device such as a dashpot. The invention is shown applied to a starter of the type described in Specification 248,804, comprising solenoids A and safety trip plungers B provided with dashpots mounted adjustably on a slidable platform F. Between the solenoids A are placed a solenoid C and a plunger D, the latter being provided with a dashpot comprising a chamber e fitted to the solenoid casing G and a second chamber E<1> secured to the platform F and adapted to slide over (or within) the chamber c. An oil passage in the end plate e<1> determines the delay in moving the platform from the starting to the normal position.
Patent GB-1059804-A (GB)
Title: Device for preventing impurities from penetrating into shaft bearings
IPC: F16C33/72
Filed: 1965-04-15
Abstract: 1,059,804. Bearings. WARTSILA-KONCERNEN AB JACOBSTADS MEK. VERKSTAD. April 15, 1965 [March 10, 1965], No. 16181/65. Heading F2A. A device for preventing impurities from penetrating into a bearing (3) of agricultural tillage machines, for example, comprises a scraper (7), which may be attached to the bearing (3), and a nut (2) mounted on a shaft (1). The member (7) is L-shaped in crosssection and extends over part of the circumference of the bearing and over part of the circumference of an extension of the nut (2). The bearing is also protected by an annular cap (5) and a seal (4) of rubber for example and is provided with an oil-groove (9). In use, straws &c. are prevented from entering a space (6) between the bearing (3) and the nut (2) by the scraper (7) acting in conjunction with the extension of the nut (2).
Patent GB-723047-A (GB)
Title: Improvements in pneumatic conveyors
IPC: B65G53/52
Filed: 1952-06-27
Abstract: 723,047. Pneumatic conveyers. JENNINGS, H. W. K. (Smidth & Co. Aktieselskab, F. L.). June 29, 1953 [June 27, 1952], No. 16272/52. Class 78 (1). Powdered or granular material is discharged from a closed tank 1 into a pipe-line 4 by compressed air supplied through a pipe 26 and thence through a pipe 6 to the upper part of the tank and through a pipe 7 to nozzles 5 projecting into the pipe line downstream of the outlet of the tank. Compressed air is supplied to the lower part of the tank through porous material 9 which may be filter stone, felt or woven fabric. The bottom of the tank is formed by a plate 13 which has a central opening 14 and supports a removable annular plate 16. A series of plates 16 is provided having orifices of different sizes from which one is selected suitable for the particular material being conveyed. The bottom 13 has a lining of porous material to which air is fed through the pipe 15. An equalizing pipe 17 connects the top of the tank to the pipe line. Valves 8, 27 are provided on the pipes 6, 7 and pipe 17, respectively. In a modification the outlet from the tank is controlled by an adjustable conical valve member.
Patent GB-515527-A (GB)
Title: Improvements in the cooling means of dynamo electrical machinery
IPC: H02K9/14
Filed: 1938-05-31
Abstract: 515,527. Cooling dynamo-electric machines. WEST, H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd.. May 31, 1938, No. 16298. [Class 35] The enclosure of a commutator or other collector is completed, apart from a small unavoidable clearance, by a disc on the collector end of the machine shaft having one or more fan blades on one side within the enclosure and one or more blades on the other side outside the enclosure and an outer cover with a central inlet for air to the outer fan blades extends over the end of the machine. In the form shown, the air in the slip-ring casing 14 is circulated by blades 10 on the inner side of the disc 9 and the blades 11 on the other side thereof pass air through the annular passage 19 formed by the outer cover 15, the external air then passing over the exterior of the casing 14
Patent GB-301450-A (GB)
Title: Method of making motor fuel
IPC: C10G17/06
Filed: 1928-06-05
Abstract: 301,450. Standard Oil Co. of California, (Assignees of Davis, W. N., and Hampton, W. H.). Nov. 30, 1927, [Convention date]. Mineral and tar oils, purifying.- The polymerization loss of unsaturated sulphurf r e e hydrocarbons during the desulphurization of motor fuel, particularly cracked naphthas, by treatment with sulphuric acid is controlled bv limiting the maximum reaction temperature of the fuel and acid. This can be effected by cooling the mixture during the reaction, by cooling the oil before mixing with the acid, or by a combination of the two methods; in the case of an oil of high sulphurcontent, the necessary acid can be added in small increments, and the heat resulting from each addition absorbed separately The reaction temperature is preferably kept within 15‹ F. of the initial temperature and the maximum is preferably between 5 and 40‹ F. As shown in Fig. 1, crude oil, entering by a valvecontrolled pipe 2, is mixed with acid entering by a valve-controlled pipe 5 and is circulated by a pump 4 through a system which includes an agitator 8 enclosing a cooling-coil 9. In a modification, the mixture may itself be passed through a cooling-coil. Other forms of apparatus described show means for cooling the oil before treatment, for adding the acid in increments, and for treating the oil in a succession of cooled vessels with acid moving through the apparatus in the opposite direction.
Patent GB-481579-A (GB)
Title: Improvements in vacuum servo-brake for vehicles
IPC: B60T13/52
Filed: 1936-06-11
Abstract: 481,579. Fluid - pressure brakes. PEZOT, J. J. M. June 11, 1936, No. 16325. Void. Convention date, June 17, 1935. Addition to 442,910. [Class 103 (i)] The lever 10 of the vacuum-servo-brake mechanism for vehicles, such as described in the parent Specification, and to which the front and rear brake operating connections 18, 21 are connected, instead of being fixed to the lover 7 to which the piston is connected, is freely mounted on the pivot 6 of that lever and has a pin-andslot engagement 14, 15 with it. This permits operation of the lever 10 and of the brakes independently of the lever 7 and piston if the power operation fails. The upper end of the lever 10 has a pin-and-slot engagement with the link 12 which is connected to the pedal and to the control valve as in the prior arrangement. The pivot 6 is mounted on a casing 4 which encloses the levers. The lever 7 has a flexible connection 9 to the piston.
Patent GB-1180621-A (GB)
Title: Apparatus for Bending, by Engagement with Rollers, Strip Passed Longitudinally Therethrough to Form Longitudinally Seamed Tube
IPC: B21D5/12
Filed: 1967-04-10
Abstract: 1,180,621. Making tubing; bending. YODER CO. 10 April, 1967 [10 Feb., 1967], No.16362/67. Headings B3A and B3E. A tube mill includes a cage roll assembly having beams supporting the cage rollers and two point support means at each end of each beam supporting the latter for movement along inclined linear paths of different inclination. The tube mill comprises an initial breakdown having an edge-forming device 2 (Figs. 1 and 3), a second breakdown 3 (Figs. 1 and 7), a third breakdown 4, cage roll assemblies 5, 6 and 7 and three fin passes 8, 9 and 10. The initial breakdown comprises upper and lower rollers, the spindle of the lower roller also supporting idler rollers arranged one on each side. The edge-forming device 2 comprises pivoted frames 34 and 35 (Fig. 3), each carrying forming rolls 48, 49 on adjustable yokes for varying the pass size. An adjusting screw 52 having left- and right-hand thread portions 53 and 54 main. tains the frames symmetrically about the mill axis. The roll sub-assemblies 38, 39 may be readily replaced by others having rolls of different size. The second breakdown comprises a vertically adjustable mounting carrying three rolls 84, 85, 79, the centre breakdown roll 79 co-operating with a bottom driven roller 154 (Fig. 7). Each cage roll assembly comprises two beams 91 supporting a multiplicity of rollers 117, 118, each beam being mounted on inclined guide tables 92, 93 (Fig. 5) on each side of the mill axis. A slide plate 98 is adjust. ably positioned on the guides by means of a screw 95 and the plate carries the beam 91 in stanchions 99, 100 positioned at right-angles to each other. The beam has a floating movement on the stub shaft 103 mounted in the stanchion 99. The rollers are adjustably supported on the beam as shown in Fig. 5.