baber/WOPTO huggingface dataset:
Patent GB-1006337-A (GB)
Title: Improvements in or relating to 6-alkylmorphinan derivatives and their preparation
IPC: C07D221/28
Filed: 1963-04-04
Abstract: The invention comprises compounds of the formula <FORM:1006337/C2/1> wherein R, R1 and R11 each represent an alkyl group of not more than 5 carbon atoms, X represents a hydrogen atom or a hydroxyl group and a double bond exists between the 6-position and an adjacent position thereto, and a process for the preparation thereof in which a 6-hydroxy morphinan of the formula <FORM:1006337/C2/2> wherein X1 represents a hydrogen atom or a hydroxyl or acyloxy group is reacted with a metallic alkylating agent in which the alkyl moiety has not more than five carbon atoms in an inert solvent medium to give a product which is treated with water and the thus produced compound of the formula <FORM:1006337/C2/3> is treated with a conventional dehydrating agent in an organic base medium.  The metal alkylating agent is suitably a metal alkyl or an alkyl metal halide which may be used at from room temperature to reflux temperature.  The dehydration is preferably carried out at not higher than 15 DEG  to 30 DEG  C. The morphinous of the formula I may be obtained in the form of their acid addition salts.  (-) - 3 - Methoxy - 6 - oxo - 14 - hydroxy-N - methylmorphinan - (cis) is prepared by a process in which thebaine is oxidized to give the corresponding 6-oxo-14-hydroxy derivative, the oxime of which is hydrogenated to give a 3 - methoxy - 4 : 14 - hydroxy - 6 - oxo - N - methylmorphinan which is converted to its 4-phenyl ether and the latter to its ketal with ethylene glycol.  The 4-phenoxy-group is eliminated and the product deketalated to give the required morphinan.  (-) - 3 - Methoxy - 6 - oxo - acetyloxy - N - methylmorphinan-(cis) is prepared by acetylating the corrdsponding 14-hydroxymorphinan.
Patent GB-1134623-A (GB)
Title: Haulage chain tensioners for mining machines
Inventor: WALLACE WILLIAM MCLAREN
IPC: E21C29/14
Filed: 1965-03-30
Abstract: 1,134,623. Chain tensioners. COAL INDUSTRY (PATENTS) Ltd. 29 March, 1966 [30 March, 1965], No. 13487/65. Heading F2G. In a haulage chain tensioner for a mineral mining machine an extensible and retractable hydraulic ram 7 controls the positions of a chain sprocket 4 rotatably mounted on a vertical shaft carried in brackets slidable along guides 5. A chain 9 engaging the sprocket is anchored at 10 to the housing 3 attached to a conveyer drive head 2. The chain tension is transmitted to the anchorage 10 and the ram 7 and as the tension increases the piston-rod 6 moves into the cylinder 8 to increase the available length of chain and to reduce the tension. When the tension in the chain decreases the reverse occurs. A tensioner is located at each end of the conveyer. The sprocket may be mounted on a horizontal shaft, further sprockets may be provided to guide the chain on to the sprocket 4, and a sprocket may be disposed adjacent the ram to guide the chain through 180 degrees.
Patent GB-735115-A (GB)
Title: Polyphase supply circuit and frequency meter
Inventor: JR JOHN HENRY ANDRESEN
IPC: G01R25/00
Filed: 1952-05-28
Abstract: 735,115. Changing number of phases. KOLLSMAN INSTRUMENT CORPORATION. May 28, 1952, No. 13529/52. Class 38 (2). [Also in Group XXXVI] The frequency of a single-phase input is measured by means of a polyphase frequency meter fed by an electronic circuit producing a two-phase output from a single-phase input with the individual phases of the output substantially equalized over a wide range of frequency. In order to extend the range the output frequency may be a sub-multiple of the input frequency. In the frequency meter shown in Fig. 1, the single-phase input is applied at 1, 2 and is applied to the control grid 4 of an amplifying triode 5, the output of which is applied to the control grid 23 of a pentode 24. This serves as an amplifier-limiter and produces a square-wave output which is fed through coupling condensers 34, 35 to the grids 36, 37 of triodes 38, 39 forming part of an Eccles- Jordan frequency divider. The output of this is passed to second and third Eccles-Jordan circuits formed by triodes 59, 61 and 62, 63. The output of the valves 61, 63 is fed through coupling condensers 64, 65 to the control grids of tetrodes 71, 72, the output of which is fed to the two phase windings 79, 81 of a synchronous motor 82 driving a permanent mag. net 83 within a conducting drag cup 84, which carries a pointer 85 co-operating with a dial 86. The drag cup and its shaft are provided with a biasing spring. The output of the valves 38, 39 is one-half that of the input frequency, this output being further divided by the two further Eccles-Jordan circuits. In a modification, Fig. 7, frequency sub-division is not employed. The single-phase input is applied at 101, 102 and across the input is connected a condenser 103 and resistor 104, the impedance of the condenser 103 being high with respect to the resistor 104 so as to obtain a phase shift of almost 90 degrees to the grid 105 of a valve 106, the output of which is applied to the grid 114 of a valve 115. The output of this valve is fed to one phase 123 of a two-phase synchronous motor 124. A potentiometer 125 is connected across the input and has a tap 126 feeding the grid 127 of a valve 128, the output of which is fed to the grid 136 of a valve 137. The output of this valve is fed to the second phase 145 of the motor 124. The reactance of the coupling condenser 135 is high at low frequency with respect to the reactance of the condenser 113, thereby rendering the two-phase output of the electronic circuit more nearly equal over a wide frequency range.
Patent GB-820803-A (GB)
Title: Improvements in or relating to circuit-arrangements for cathode-ray tube oscillograph apparatus
IPC: G01R27/26
Filed: 1956-05-02
Abstract: 820,803. Impedance frequency characteristics. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 2, 1956 [May 5, 1955], No. 13543/56. Class 37. [Also in Group XL (c)] Relates to a C.R.O. for displaying the frequency response of a circuit 5 in which the frequency applied to the test circuit 5 from an oscillator 3 is varied synchronously with the timebase generator 1, the output from the test circuit 5 being applied through a rectifier 6 and amplifier 7 to the Y plates of the C.R.O. to give a response curve 8 and brilliance frequencymarkers 11 being produced by applying an output from oscillator 3 to the grid of the C.R.O. through sharply-tuned filter circuits. According to the present invention two adjustable amplitude-calibration markers 17 are produced by applying an output from the amplifier 7 through a peak rectifier 12 to a tapped potentiometer 13 having two outputs of selectable amplitude which are applied sequentially to the Y plates through a 100 c/s. electronic switch 15 controlled by a multivibrator 16 synchronized by the 50 c/s. timebase generator 1. The calibration effected by the lines 17 is thus in terms of the peak output from the test circuit 5. Fig. 1 shows the invention applied to a doublebeam C.R.T. with separate deflection sections 4a and 4b for the response and amplitude calibration signals respectively. Fig. 2 (not shown) employs a single-beam tube, the response and amplitude-calibration signals being applied sequentially to the Y plates through a 25 c/s. electronic switch synchronized by the timebase generator 1.
Patent GB-704396-A (GB)
Title: Improvements in or relating to apparatus for playing gramophone records
Inventor: SPEAR DONALD FREDERICK
IPC: G11B19/265
Filed: 1951-06-08
Abstract: 704,396. Gramophone turntable accessories. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 6, 1952 [June 8, 1951], No. 13588/51. Class 40 (2). A speed converter for a gramophone turntable comprises two discs 10, 22 of different diameters and independently rotatable with regard to a bearing 5 in a stationary plate 1 on which is mounted a spring-loaded lever 29 carrying at one end a rotatable shaft 27 having friction gearwheels 25, 26 which engage the inner surfaces of the rims of the discs 10, 22, whereby a reduction of speed of the upper disc 10 is effected relative to the lower disc 22. The centre pin of the existing turntable passes into the centre hole 23 of the lower disc 22 to locate it, and the upper disc 10 is provided with a pin 17 to locate a record placed thereon. The bearing 28 carrying the shaft 27 is mounted for limited pivotal movement about an axis formed by pins passing from the arm 29 into recesses 39, 40 whereby the shaft 27 is enabled to take up its natural position in which the gearwheels 25, 26 rest with balanced pressure on the rims of the discs 10, 22.
Patent GB-640265-A (GB)
Title: Improvements in and relating to electric telegraph systems
Inventor: DAVIS LEWIS GEORGE
IPC: H04L12/10
Filed: 1947-05-21
Abstract: 640,265. Electric telegraphy. STANDARD TELEPHONES & CABLES, Ltd. May 21 1947, No. 13669. [Class 40 (iii)] A two - wire double - current two - way - simplex telegraph system in which only one of two interconnected stations comprises a source of D.C. signalling current is characterized in that at that station a three-winding receive relay is provided, two windings being connected in opposite senses to the same pole of the D.C. source. The receive relay 1 at a central station is connected so that current from the negative pole of a battery 5 through winding 2 moves the armature 7 to its spacing contact S, similar current through winding 3 moves the armature 7 to its marking contact M, and current from the positive pole through winding 4 moves the armature to its marking contact M. The receiving armature 7., transmitting armature 12 and the out-station transmitting armature 17 are normally all marking as shown. When the central station is transmitting the battery on line 11 is reversed for mark and space, producing marking and spacing currents in the out-station's receive relay 20. The central station's own receive relay 1 receives marking current (through either winding 3 or 4) whether a space or mark is transmitted. The outstation can break in by sending a space, the earth thus applied to line 10 operating relay 1 to spacing over the top winding 2. When the outstation is transmitting, a space or mark puts an earth on line 10 or line 11 to operate the central receive relay 1 to space or mark over windings 2 or 4 respectively. The out-station receive relay 20 records a local copy of the transmitted message and the central operator can break-in by sending a spacing signal which causes a space to be recorded on relay 20 whatever the position of the transmit armature 17.
Patent GB-950354-A (GB)
Title: Flush lamp mounting device
IPC: B64F1/20
Filed: 1961-04-17
Abstract: 950,354. Runway and like lamps. V. E. CONVERSO. April 17, 1961 [April 22, 1960], No. 13689/61. Heading F4R. A flexible mounting for an illuminating device which may be a lamp or a prism or the like co operating with a fixed light source, comprises a receptacle having an upstanding circular wall for embedding in a vehicle supporting way, circular holding means having a sloping surface and of substantially less diameter than the wall of the receptacle and a height of the order of the depth of the receptacle, means for retaining the illuminating device below the surface and an annular resilient diaphragm having a radial width greater than its thickness, the outer edge being securely fastened to the cylindrical wall and the inner edge to the holding means so as to support the sloping surface above the vehicle way and to permit it to recess into the receptacle under application of an external force and return on removal of the force. The casing 20 is sunk in an aircraft runway 21 and has a threaded ring 37 to which is bonded a ring 31 of rubber, the inner edge of which is secured to a conical member 30 having a transverse channel with a sloping bottom 33 and flaring side walls 34, 35. A light source 28 is carried in resilient mountings 46, 47 so as to extend across the channel below the level of the top of the member 30 and is protected by a strap 57. The underside of the member 30 carries a rubber ring 58 to act as a buffer when the member is recessed into the casing and may also be provided with rigid stops (not shown). The casing may be sealed so as to be air and water tight, the compression of the air when the member is depressed assisting the buffering action. In a modification, to enable the member 30 to be removed the ring 31 may be bonded to an outer ring which is secured by bolts to a flange on the inner side of the casing. The light source may be an iodine lamp.
Patent GB-957766-A (GB)
Title: Improvements in or relating to agricultural implements
IPC: A01B35/22
Filed: 1962-04-10
Abstract: 957,766. Agricultural implements. J. H. TAYLOR. Feb. 8, 1963 [April 10, 1962], No. 13739/62. Heading A1B. Bars 12 carrying cultivator tines 13 are removably attached to the tines 11 of a buck-rake 10 by means of clamps attached by bolts 19. The tines 13 are attached to the bars 12 by means of blocks 20 slidably adjustable on the bars. Specification 771,002 is referred to.
Patent GB-310937-A (GB)
IPC: D06F13/02
Filed: 1929-05-03
Abstract: 310,937. Inventia Patent-Verwertungs-Ges. May 3, 1928, [Convention date]. Casings; driving- arrangements. - The motor 10, Fig. 2, and transmission gear 11, 12 of a washing- machine are housed within integral casings 20, 19 formed of electrically insulating material for example that known under the Registered Trade Mark " Bakelite." The handles 4, 5 of the casing and hollow cover respectively are formed of heat insulating material. The motor and transmission gear are housed within the hollow cover, and the casings containing these members are supported by insulating legs 37, Fig. 1, resting on an aluminium plate 7 secured to the floor 6 of the cover. The top part 3 of the cover is secured to the end cap 21 of the transmission casing by a nut 38. An electrically insulating coupling 35 is provided between the vertical shafts 36, 33. A fan 25, Fig. 2, is formed on the motor shaft drawing in air through apertures 27, the air being guided by a tube 31.
Patent GB-159113-A (GB)
Title: Improvements in machines for breaking and scutching hemp or other fibrous material
IPC: D01B1/14
Filed: 1920-05-19
Abstract: 159,113. Shely, W. A. May 19, 1920. Breaking and scutching apparatus.-Fibrous material such as hemp is broken and scutched by mechanism comprising one or a series of beater bars, mounted upon a rotating support and moving in relation thereto in an eccentric or elliptic path, and co-operating with a bar against which the material is broken by the beater bars. Two series of beater bars moving synchronously and operating on opposite sides of the material may be employed. The material is fed over a table 139, Fig. 3, provided with a hood 142 and sides, to feed-rollers 33, 34, the upper one of which is mounted in spring-pressed sliding bearings. It is passed between break-bars 23, 24, which are adjustably mounted on the framework 14. Two series of beater-bars 44, 58 are provided, which are arranged to move in the elliptical paths 87, 88 and to co-operate respectively with the lower and upper bars 24, 23. The bars 44 are carried between wheels 45 connected by a spindle 49<1> and rods 48. The bars are pivoted to the wheels by pins 50 carrying crank-arms 51, Fig. 5, provided with slots 56 engaging pins 57 carried by a rotating toothed ring 55 mounted on a stationary eccentric 52. The wheels 45 of the upper series gear with the corresponding wheels 62 of the lower series and the toothed ring 55 with the lower toothed ring 64. The bars are driven from the main shaft by a gear 78 engaging with the wheel 62 and by a train of gearing 86, 84, 85, 81 leading to the ring 64. After treatment by the beater bars, the material is acted upon by a rotating scutching-device comprising a number of spaced rings 97 with projections 98 mounted upon bars 95 carried by spiders 92 on an axle 93. The material passes over the top of this device, the waste being thrown through a grid 101 and falling into a trough 105, from which it is removed by a screw conveyer 121. The end of the material is seized by a roller 111 and delivery belt 106. The rear end of the material is drawn round by the scutching-device and fully treated between the device and a grid 114. The waste falls on to a belt 117 running the whole length of the machine. The various parts are interconnected by toothed or chain gearing and are all driven from the one shaft 76. The whole machine is mounted in a suitable framework carried by wheels 9, 10.
Patent GB-200646-A (GB)
Title: Steam boiler
IPC: F22B1/26
Filed: 1922-05-17
Abstract: 200,646. Caneghem, F. van. May 17, 1922. Generating by direct contact of Combustion products. - The products of combustion from a chamber within a boiler flow through nozzles into open-ended pipes having both ends below the water level. Water is thus drawn into the pipes and is evaporated and returned to the body of water in the boiler. The products from a burner 3, Fig. I, pass into a chamber 2 bent upwards to extend above the boiler water level and terminating in nozzles 14, which open into vertical pipes 15. The chamber 2, Fig. II, has a nozzle extending into the flared end 17 of a bent pipe 23. The boiler is fitted with a piston-operated valve which opens when the boiler pressure is nearly equal to the pressure of the fuel.
Patent GB-957405-A (GB)
Title: Improvements in the preparation of alpha-naphthyl alkyl carbamates
IPC: C07C271/06
Filed: 1963-04-08
Abstract: A mixture containing alpha-naphthol and other naphthalene compounds is treated with an alkyl isocyanate and the carbamate formed is separated by crystallization. Any alpha-tetralone in the starting material may be isolated by distillation, after crystallization of the major part of the carbamate.
Patent GB-918424-A (GB)
Title: Improvements in or relating to television receivers with contrast control
IPC: H04N5/57
Filed: 1959-04-24
Abstract: 918,424. Gain control circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. (Philips' Gloeilampenfabrieken N.V.). April 24, 1959, No. 14069/59. Class 40 (5). [Also in Group XL (b)] The invention relates to a television receiver for negatively-modulated signals, in which the video signal including the D.C. component is applied from detector 4 to a video amplifier 5 which feeds the picture-tube 9 and also an automatic gain control valve 13, to which it is direct-coupled over potentiometer 11, 12. The valve 13 is biased back by cathode bias potentiometer 14, 15 and its anode supply comprises positive-going sync. pulses applied over condenser 18; it is driven conductive by the corresponding positive-going pulses applied to its grid from the anode of the valve 5 during sync. pulse periods, to a degree dependent upon the signal amplitude. The negative potential appearing at the anode of the valve 13 is taken off via potentiometer 20, 21, the voltage across resistor 21 constituting the A.G.C. voltage. Contrast is controlled by varying the screen-grid potential of video amplifier 5, by means of potentiometer 22. In such an arrangement, due to the A.G.C. operating on the peaks of the sync. pulses and maintaining their level constant, variation of the contrast control causes an undesirable shift in the black level. According to the invention, this is compensated by feeding part of the variable contrast control voltage into the cathode circuit of the A.G.C. valve, via resistor 24, so as to also vary the A.G.C. delay. In a second embodiment (Fig. 2, not shown) contrast is controlled by a variable resistor in the cathode circuit of the video amplifier and the compensatory variable delay voltage has to be applied to the grid of the A.G.C. valve. The Specification also refers to the problem of adjusting the contrast to compensate for variations of incident extraneous light on the picture tube. In this case the black level requires to be varied in the same direction as the white level and so that the ratio of white level to twice black level remains constant. According to an alternative embodiment of the invention this may also be done by varying the A.G.C. delay when adjusting contrast, but in the opposite sense to that used in the previous embodiments.
Patent GB-508986-A (GB)
Title: Improvements in apparatus for stretching cords
IPC: D04D1/00
Filed: 1938-05-11
Abstract: 508,986. Stretching cords. UNITED STATES RUBBER PRODUCTS, Inc. May 11, 1938, No. 14097. Convention date, May 11, 1937. [Classes 120 (ii) and 120 (iii)] [Also in Group XXV] Apparatus for stretching cords, such as tyre cords, comprises a pair of free-running grooved conical rolls 41, 42, the cords 17 being drawn off spools 16 over the rolls and received on other spools 21, 23 which are positively or frictionally driven. The spools 16 are mounted to turn on horizontal spindles 15, presser pads or brakes 18 pivoted at 20 resting on the windings to ensure that the force required to unwind each cord is practically uniform irrespective of the amount remaining on the spool. The cords are guided between the rolls 41, 42 and the receiving spools 21, 23 by pulleys 29, 33. The rolls 41, 42 are supported on anti-friction bearings. The grooves of the rolls are tapered at the sides and rounded at the bottoms to permit the cords to slip.
Patent GB-637916-A (GB)
Title: Improvements in or relating to power presses and the like and to tools therefor
IPC: B21D43/18
Filed: 1948-05-25
Abstract: 637,916. Stamping; bending. GENERAL ELECTRIC CO., Ltd., HOLTOM, L. W., and RICHARDSON, J. A. May 25, 1948, No. 14142. [Class 83 (iv)] Strippers.-To facilitate the stripping of the work from one of the tools of a power press, more particularly a drawing or bending press having a strip feed device, the other tool is provided with one or more sucker cups. As shown, the pressure-pad 4 associated with the upper tool of a press is formed with recesses 8, each having a rubber suction cup 7. The upper part of the cup has a valve 10 normally kept closed by a spring 11, but arranged to be opened by the engagement of the valve rod 9 with a fixed abutment 14 when the upper tool has been lifted a predetermined distance so that the work is clear of the lower tool.
Patent GB-1487170-A (GB)
Title: Process for separating sodium lauryl sulphate from a complex of protein therewith
IPC: A23J1/20
Filed: 1976-04-08
Abstract: 1487170 Separation of sodium lauryl sulphate from complex of protein therewith STAUFFER CHEMICAL CO 8 April 1976 [30 May 1975] 14307/76 Heading C3H [Also in Division A2] A process for treating a sodium lauryl sulphate-whey protein complex to remove sodium lauryl sulphate therefrom comprises either: (a) adjusting the pH and solids content of a solution containing the complex to from 5À0 to 6À5 and from 5 to 30%, by weight, respectively at a temperature of 0‹ to 5‹ C., or (b) adjusting the pH and solids content of a solution containing the complex to from 11 to 13 and from 2-5 to 10%, by weight, respectively, at a temperature of 0‹ to 5‹ C.; to thereby form a sodium lauryl sulphate-rich solution and separating the precipitate and supernatant solution. The whey may be sweet or acid cheese whey or soya, cottonseed or coconut whey and may be in the form of a protein concentrate which may be partially delactosed. The precipitate which contains 70-90% sodium lauryl sulphate may be recycled for use in forming additional sodium lauryl sulphate-whey protein complexes. The supernatant may then be treated with an anionic exchange resin to remove the small amount of sodium lauryl sulphate remaining. This supernatant is then utilized as an egg substitute in the production of foodstuffs and beverages. The amino acid content of the product of the invention is specified in Example 8.