baber/WOPTO huggingface dataset:
Patent GB-610848-A (GB)
Title: Improvements in or relating to pedal bicycles
IPC: B62M1/12
Filed: 1946-03-12
Abstract: 610,848. Crank-mechanism. POTIER, A. March 12, 1946, No. 7762. Convention date, Aug. 17, 1942. [Class 80 (iii)] [Also in Group XXXI] In an auxiliary driving mechanism for pedalpropelled vehicles of the type in which the normal rotation of the pedal crank spindle, by action of the legs on the pedals, is adapted to be supplemented by pressure applied to the handle-bars transmitted to a uni-directional auxiliary driving device acting on the spindle, each of the handle-bars g are carried by one end f of a lever d pivoted about a fulcrum in a head structure secured to the steering column, the lever d being operatively connected by a flexible cable or cables m, i to the auxiliary driving device, and resilient means q connected across the device and a trailing portion o of the vehicle frame, yieldingly opposing the driving effort. The uni-directional driving device comprises a free-wheel mechanism secured to thepedal crank spindle and having a depending actuating arm n to which the flexible cable or cables is or are secured.
Patent GB-1489987-A (GB)
Title: Process for the recovery of 19-nor-delta4-androstene-3,17-dione
IPC: C07J1/00
Filed: 1975-02-25
Abstract: 1489987 Recovery of 19-nor-#<SP>4</SP>-androstene- 3,17-dione MITSUBISHI CHEMICAL INDUSTRIES Ltd 25 Feb 1975 [26 Feb 1974] 7808/75 Heading C2U 19 - Nor - #<SP>4</SP> - androstene - 3,17 - dione (ESD) is recovered from the steroid mixture obtained by Birch reduction of steroids of the formulae wherein R is C 1-10  alkyl or aryl-(C 1-5  alkyl); X and Y are each C 1-10  alkoxy or alkylthio; Z and W are each O or S; and n is 2-10, followed by hydrolysis of the reduction product, by (1) reacting the mixture with a secondary amine in at least an alcohol and/or phenol as solvent, (2) extracting the so-formed C 3 -enamine of ESD with an aqueous solution of an inorganic acid, and (3) hydrolysing the separated enamine. Preferably the product of step (1) is evaporated to remove the solvent, to the residue is added a water-immiscible solvent, said solvent being one in which alkyl and aralkyl ethers of estrone are readily soluble, the resulting solution or suspension is extracted with an aqueous solution of an inorganic acid, and the resulting extract is washed with the said water-immiscible solvent The hydrolysis (3) is preferably effected by adding an alkali to the aqueous inorganic acid solution containing the C 3 -enamine of ESD, and the free ESD liberated may be extracted from the hydrolysis mixture with a water-immiscible organic solvent and the resulting extract washed with aqueous acid. In alternative procedures (a) the evaporation of the product of step (1) may be omitted, the extraction with a waterimmiscible solvent being effected directly on the reaction mixture or the reaction mixture being filtered and the solid enamine then dissolved in the water-immiscible solvent; or (b) the product of step (1) may be evaporated, the residue stirred directly with aqueous acid and the insoluble steroids filtered off from the solution containing the C 3 -enamine of ESD. Reference is made to ethynylation of ESD to produce 19-nor-ethisterone and to the use of this in oral contraceptive pills.
Patent GB-628545-A (GB)
Title: A method of, and apparatus for, producing gaseous furnace atmospheres
IPC: C01B32/40
Filed: 1946-03-13
Abstract: 628,545. Furnace atmospheres. KEENER, S. F., (trading as SALEM ENGINEERING, CO.). March 13, 1946, No. 7810. Convention date, May 8, 1942. [Class 51 (ii)] [Also in Group XL (a)] Atmosphere gas for a heat treatment furnace chamber is prepared in a known manner by the interreaction of a hydrocarbon and air in the presence of a catalyst in a reaction chamber 10 and treated by passing through a condenser 18, an electrostatic precipitator 20 to remove " colloidal " carbon, and a drying chamber 29 containing activated alumina, silica gel or the like. A suitable catalyst is said to be porous silicon carbide impregnated with metallic nickel. The electrostatic precipitator comprises a metal casing 21 with internal insulating lining 22, an outer electrode 23 consisting of a wire fabric tube, and an inner conductor rod 25 with discs 26 having knife edge peripheries.
Patent GB-330569-A (GB)
Title: Improvements in well drilling apparatus
IPC: E21B3/06
Filed: 1929-03-11
Abstract: 330,569. Goeser, E. W., Oct. 11, 1928, [Convention date]. Borehole apparatus.-Well-drilling apparatus comprises a derrick to the base of which are secured draw-works uprights 30, 31, 32 supporting a line shaft 44 and a drum shaft 39, while diagonal beams 50 support a countershaft 56; the countershaft is driven from a prime mover through a chain 58 and may drive the line shaft at either of two speeds through a clutch 62 and chain 67 or 68. The rotary table 14 operating the drill may be driven from the line shaft through a clutch 71, chain 79, a sleeve 77 on a jack-shaft 75, and a chain 22; the drum shaft may be driven from the line shaft through either of two chains 49 and a clutch 48 on the drum shaft.
Patent GB-1481110-A (GB)
Title: Safety device in electrical connection devices
IPC: H01R33/96
Filed: 1975-02-25
Abstract: 1481110 Two - part couplings BENGT PETERSSON NEW PRODUCTS INVESTMENT AB 25 Feb 1975 7873/75 Heading H2E A connector, Fig. 2, comprises connector elements 7 with screw portions for connection to a cable, contact parts 4, 5 for connecting with, for example, a lamp, an insulating plate 10 separating respective mating contacts wherein insertion of the lamp to be connected deforms spring portion 11 and shifts plate 10 so that mating contacts can be pushed together on further insertion of the lamp. Insulating plate 10 has a central aperture 13 which, in the displaced position, allows central contact portions 8 and 9 to mate. In another embodiment (Figs. 7, 8, not shown) the insulating plate rotates about a pivot and in a third embodiment the rotating plate is hinged to an extension of one contact part.
Patent GB-724900-A (GB)
Title: Improvements in and relating to gyro-stabilised control systems
Inventor: LIVERSIDGE JOSEPH HORACE
IPC: G01C21/18
Filed: 1948-03-16
Abstract: 724,900. Gyroscopic apparatus. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. April 6, 1949 [March 16, 1948], No. 7907/48. Class 97 (3). A gyroscope 1 for the stabilization of a gun is mounted on a platform 9 supported by a shaft 12 having an axis P,P parallel to the gun axis in bearings formed in brackets 7, 8, secured to the gun, and a vertical-seeking gyro 11 maintains the axis Z,Z in a vertical plane containing the axis P,P. The gyro 11 may be a gyro of sufficient size to maintain the gyro 1 in position or it may control the shaft 12 through a servo-motor. Specifications 724,896, [Group XXXVIII], and 724,899 are referred to.
Patent GB-444673-A (GB)
Title: Improvements in and relating to regulating devices
IPC: G05B1/04
Filed: 1935-03-14
Abstract: 444,673. Automatic control of temperature, fluid pressure, &c. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. March 14, 1935, Nos. 7959, 7960, and 7961. Convention dates, March 14, 1934, Jan. 16, 1935, and Jan. 23, 1935. [Class 38 (iv)] In an automatic regulation arrangement having means responsive to deviation of the variable from a standard value which causes operation of restoring means, thermal. means are provided for producing a return action having a characteristic which is a reproduction of the characteristic of the regulating process. In the form shown in Fig. 1, deviation of temperature in a furnace 1 causes unbalance of a Wheatstone bridge 3 supplying a galvo 4, which controls by a motor 13 the fuel valve 14. To prevent hunting, the bridge is temporarily reset by an amount depending on the deviation of temperature. The amount of a resistance wire 17 in two arms of the bridge is varied by a mercury column in a U-tube, the ends of which communicate with chambers 19, 20 containing heaters, one or the other of which is supplied with an impulse depending on the extent of the deviation. Rate of transfer of heat between the two chambers is determined by the position of a screen 25. In a modification, separate temperature sensitive resistances connected in the bridge are associated with the heaters. In another modification, Fig. 5, for adjusting the valve 40 in a pipe line in response to pressure of the fluid, a lever 33 is moved by a manometer 31 to close the circuit of a reversible motor 38 which adjusts the valve. The pivot of the lever 33 is carried by the centre diaphragm 51 of a manometer having compartments 46, 47 containing heaters 44, 45 and a readily vaporizable substance 52. When a deviation occurs one of the heaters is energized and the pivot is temporarily shifted by an amount depending on the deviation. In a modification of this the contacts 34, 35 are mounted on a plate coupled to the movable partition 51. In a further modification, Fig. 6, energy to the heating winding 67 of an electric furnace is supplied through a grid controlled valve 64, the grid potential of which is varied by the unbalancing of a bridge 70 to give control of the temperature. Two arms of the bridge contain temperature sensitive resistances 73, 74 which are mounted in a vessel 76 containing a heater 75 supplied with current proportional to the load current. One resistance is screened from the heater to give a lag in its response such as to cause temporarily balancing of the bridge.
Patent GB-639132-A (GB)
Title: Improvements in mechanism for imparting linear motion to wires, strips and the like as in sound recorders and reproducers
Inventor: STONEHAM HERBERT GEORGE
IPC: G11B15/50
Filed: 1947-03-24
Abstract: 639,132. Feeding webs &c. MINISTER OF SUPPLY. March 24, 1947, No. 7989. [Class 100 (i)] [Also in Group XXXVIII]- In driving mechanism for imparting linear motion to a strip or wire from one spool to another of the kind in which the spool carriers are driven from the side wheels of a differential gear, of which the planet wheel carrier is connected through forward and reverse drive gearing to a main drive shaft, the spool carriers are arranged coaxially and have friction wheels adapted to engage complementary friction wheels on the side wheels of the differential gear, when a detachable magazine holding the spool carriers is placed in position to engage the drive mechanism. In the sound recording and reproducing apparatus shown; friction wheels 52, 53 connected to the differential gear side wheels 23, 25 drive rubber tyred friction drums 54, 55 on the spool holders, which may thus rotate at different speeds depending on the relative depth of the wire on the spools. Pinions 57, 58 on the inner faces of the drums also drive piling devices 14, 15, and a friction brake 56 bearing on one or other of the drums tensions the wire. The drive mechanism comprises a main shaft 27 driving through a changespeed gear a loose wheel 39, 40 on a layshaft 26, the loose wheel driving the layshaft through a dog clutch 41, 42 when a solenoid 149 is energized by a recording amplifier receiving modulation and operates a rod 48: A lever 21 operates the reversal of the drive for "playback " through a dog clutch 38, 37, idler pinion 44 and a gear wheel 43 splined on the layshaft, the wheels 43, 44 and clutch wheel 37 being slidable bodily on the shafts so that when the main drive clutch 41, 42 is engaged the reversing clutch 38, 37 cannot be operated. The lever 21 also reverses the braking on the drums on play-back, and is coupled with the spool holders so that pressure between the friction wheels is reduced, when not in use, to prevent tyre flats. 20 denotes a remaining length indicator driven from the layshaft and 71,. 72, warning and stop switches operated by a lever 70 bearing.on the wire.
Patent GB-1241531-A (GB)
Title: Apparatus for scattering fish bait
Inventor: HATTA HIROSHI
IPC: A01K97/02
Filed: 1970-02-19
Abstract: 1,241,531. Scattering bait. H. HATTA. 19 Feb., 1970, No. 8025/70. Heading A1A. Bait scattering apparatus for use in underwater fishing comprises a body 5 which is driven by a driving mechanism 2 located at its rear and remotely controlled by radio signals from a fishing vessel or aircraft. Bait is held in a tank 10 which surrounds a pipe 6 the tank 10 having ports 18 communicating with water outlet pipes 9. Prior to the release of bait the ports 18 and pipe 6 are sealed by valves 11, 17 which may be needle valves mounted on a base 12 which is connected to a piston 14. When it is desired to scatter bait a valve 16 is actuated in response to a signal from the vessel to release air from a pressure tank 15' into the forward end of a cylinder 15, so moving the piston 14 and rod 13 rearwardly thus withdrawing valves 11, 17 thereby allowing water to flow from inlet pipes 7, 8 through pipe 6 into pipes 9 and also allowing bait to pass through ports 18 and be carried away by the water passing through pipes 9, the bait being urged through the ports 18 by bellows 22 which are expanded under the action of water fed through pipes 23. Continuous or intermittent discharging of bait is possible. When it is desired to stop the release of bait valve 16 is again actuated to move piston 14 forwardly, thus closing ports 18 and pipe 6 by valves 11, 17. To retrieve the apparatus, piston 14 is again retracted, valve 21 is remotely actuated permitting air to pass from tank 15' to cause expansion of bellows 19 thus forcing water from bait tank 10 thereby reducing the weight of the apparatus to permit it to float easily to the water surface. In a modification of the apparatus, a sleeve (24), Fig. 2 (not shown), may be joined to valve (17) which serves to open pipes (23) on withdrawal of valve (17).
Patent GB-1457395-A (GB)
Title: O-ethyl-o-n-propyl-o-1-aryl-2-cyano vinyl-thionophosphoric acid esters and their use as insecticides and acaricides
IPC: C07F9/165
Filed: 1975-02-26
Abstract: 1457395 Unsaturated thiophosphate esters BAYER AG 26 Feb 1975 [27 Feb 1974] 8036/75 Headings C2P and C2C The invention comprises thionophosphate esters of the general formula which encompasses the cis and trans isomers and wherein R is H, C 1 -C 4  alkyl, C 1 -C 4  alkoxy or halogen and R<SP>1</SP> is C 1 -C 4  alkyl, C 1 -C 4  alkoxy or halogen. They may be obtained by reacting a diester halide in which Hal is halogen with an #-cyanoacetophenone derivative of the formula or its enol form of the formula wherein M is an alkali metal-, alkaline earth metal-, or ammonium equivalent, optionally in the presence of an acid acceptor and/or a solvent. The products have pesticidal properties and may be used as active ingredients in conventional pesticidal formulations. The compound is obtained by adding a solution of NaCN in water and ethanol dropwise to 2<SP>1</SP>,5<SP>1</SP>-dichloro-2- bromoacetophenone in ethanol. Several other specific compounds of Formula V or Va are stated to be obtainable in an analogous manner. 2<SP>1</SP>,5<SP>1</SP> - Dichloro - 2 - bromoacetophenone is prepared from p-dichlorobenzene and acetyl chloride by the Friedel-Crafts method followed by bromination in ether.
Patent GB-908535-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: H05G1/32
Filed: 1959-03-09
Abstract: 908,535. Control systems for X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 9, 1959 [March 11, 1958], No. 8053/59. Class 38 (4). [Also in Group XL (b)] X-ray apparatus comprising a device to increase smoothly and gradually the voltage across the anode and the cathode of the X-ray tube during the exposure, is characterized in that means are provided to (1) adjust the values between which the voltage is varied; (2) adjust the initial value of the voltage; and to (3) adjust the rate at which the voltage is varied. An X-ray tube 1 has its cathode 5 heated by way of a transformer 7 from an A.C. source 10, 11 whilst the voltage across the anode 3 and cathode 5 is provided by a transformer 2, the primary winding 8 of which is energized by the A.C. source 10, 11 over a circuit which includes an autotransformer 9 and a variable resistor 26. During an exposure the arm 27 of the variable resistor. 26 is driven by a motor 29 through a friction coupling 31 to gradually reduce the resistance in the circuit of the primary winding 8 whereby the voltage output of the secondary winding 4, and hence the anode-cathode voltage of the tube 1, increases. At the beginning of an exposure the stop 32 is electromagnetically withdrawn from, and the stop 33 inserted into, the path of the arm 27. These stops are movable in the directions of arrows 36, 37; thus the range and the initial value of the voltage applied to the tube 1 are adjustable. The rate of increase of the voltage is varied by varying the speed of the motor 29. A relay contact 24 is provided in the primary circuit of the transformer 2 which contact is closed at the beginning of an exposure upon operation of a pushbutton 23. During exposure a photo-cell 13 operates to gradually bring a valve 18 to cut-off whereupon the relay contact 24 opens to terminate the exposure. Alternatively, the increase in anode-cathode voltage may be accomplished by varying the grid potential of a valve serially connected in the anode circuit of the X-ray tube whilst the exposure time may be controlled by a mechanical time selector. Further, a variable resistor may be inserted in the circuit of the cathode heater transformer 7 to allow regulation of the current in the X-ray tube 1.
Patent GB-251407-A (GB)
Title: Improvements in or relating to the mounting of circulation pipes of domestic range and like boilers
IPC: F24C13/00
Filed: 1925-03-26
Abstract: 251,407. Wilson, G. March 26, 1925. Heating water.-A junction-box A for closing the opening through which circulation-pipes from a domestic boiler pass from a flue, is pro vided with a diaphragm D, to which ferrules B on the ends of the pipes are attached by back nuts E and washers C. The continuation pipes G are secured by unions F.
Patent GB-1247143-A (GB)
Title: A valve-bag-filling machine with a dribble and bulk feed
Inventor: SCHWAKE PAUL
IPC: B65B1/18
Filed: 1970-02-19
Abstract: 1,247,143. Filling bags; hoppers. HAVER & BOECKER. 19 Feb., 1970, No. 8112/70. Headings B8C and B8S. [Also in Division G1] A movable gate 11 varies the flow of material from a hopper 1 to a valve bag 8 under the control of a bag weighing device so that the flow is cut from a maximum to a dribble feed when the bag is nearly full and then cut off completely when the bag is full. The gate 11 has a feed aperture and slides between two fixed apertured plates 10 and 13 which are biased together by adjustable springs 12. Material flows from the gate through a flexible tube 6 to a filling nozzle 7. Feed gate operation.-The gate is moved by a piston 24 in a cylinder 16. At the commencement of feed, the weighing device acts through a microswitch to admit compressed air to an opening 20 so that the piston 24 is moved upwardly to a full feed position in which it is arrested by the abutment of a further piston 25 against the top of the cylinder. When the bag is nearly full, the compressed air supply is transferred to an opening 21 so that the piston 25 is moved downwardly to a position determined by adjustable nuts 34 and 35 thus moving the piston 24 to a dribble feed position. When the bag is full the compressed air supply is switched to an opening 17 so that the piston 24 is fully depressed to close the feed gate.
Patent GB-397229-A (GB)
Title: Improvements in apparatus for the measurement and control of power factor
IPC: G01R25/00
Filed: 1932-03-18
Abstract: 397,229. Supply systems. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c/o General Electric Co., Wembley, Middlesex. March 18, 1932, No. 8155. [Class 38 (iv).] Regulation, automatic; power-factor control.- Control of power-factor is effected by a grid-controlled gas-filled triode wherein the anode and grid are supplied with voltages in phase, or differing by a constant angle, with respect to the current or voltage of the circuit in which the power-factor is measured or controlled, the amplitude of the grid potential being much greater than the critical grid 'potential of the triode, that is, the steady potential applied to the grid and just preventing discharge when the anode potential is a maximum. In one arrangement, Fig. 1, the anode and cathode are connected across the mains supply to load 2, the load circuit including a current transformer 6, the secondary 7 of which is connected across the cathode and grid through a phase-shifting network 9. In another arrangement, Fig. 2, the triode output energizes field coils of a continuous-current generator mechanically connected to a synchronous motor 12 in parallel with the load. The transformer 6 may be located between the load and the synchronous motor and connections can be made so that the amount of compensation effected depends upon the magnitude of the load as well as its power-factor. In another arrangement employing condensers and inductances in series across the load, control can be effected by varying the relative positions ,of the inductance coil and core, or by partially saturating the core. Compensation may be effected in steps, Fig. 4, relays R1, R2, R3 in the anode circuit being operated 'successively to close switches S1, S2, S3 and introduce the desired compensation Cl, C2, C3. In this arrangement, the current transformer 6 is located between the condensers C1, C2, C3 and the load. In another arrangement, Fig. 5, pairs of gas-filled triodes B1, B2, B3 are biassed to pass current in one direction or the other through the compensating condensers C1, C2, C3, the steady negative bias from resistance 13 being graded from pair to pair and the alternating component being applied from transformer 16 through the phase-shifter 17. The potential difference dependent on power-factor is produced across resistance 4 connected to a low pass filter 14 and the grid biassing resistance 13. Specification 296,812, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-140219-A (GB)
Title: Improvements in the manufacture of railway buffers
IPC: B21K7/00
Filed: 1919-04-01
Abstract: 140,219. Williams, O. R. April 1, 1919. Railway vehicle details. - Buffers have the plunger member formed from a steel billet treated first in an hydraulic press to form the sides A', and then in a drop-stamp to form the head-piece A<3>, the walls of the hollow cylinder fitting loosely over a large peg in the bottom die during this latter operation. If the retaining-flange A<4> is formed solid with the plunger casing, the socket member B is made in longitudinal halves bolted together; or the socket member may be of uniform diameter and fitted with a loose liner fixed to the socket member after the insertion of the plunger member.
Patent GB-177526-A (GB)
Title: Manufacture of stable, dry and readily soluble vat-preparations for dyeing
IPC: C09B67/28
Filed: 1922-03-21
Abstract: The stable dry vat-preparations of the parent Specification, obtained by evaporating mixtures of alkali indigo-white with quinone vat-dyestuffs with or without agglutinants, are modified by substituting for the indigo-white halogen indigo-whites. Examples are given of mixtures containing monobrom-indigo-white, caustic soda, hydrosulphite, molasses, and one of the quinone vat-dyestuffs of Specifications 19599/12, 22528/13, or the dye stuff from quinone and p-chloraniline, or the dyestuff obtained from m : m1-dianilido-dichloroquinone and ammonium sulphide.  Instead of monobromindigo, monochlorindigo or dibromindigo may be used.ALSO:The stable dry vat-preparations of the parent Specification, obtained by evaporating mixtures of alkali indigo-white with quinone vat-dyestuffs with or without agglutinants, are modified by substituting for the indigo-white halogen indigo-whites. Examples are given of mixtures containing monobromindigo-white, caustic soda, hydrosulphite, molasses, and one of the quinone vat-dyestuffs of Specifications 19599/12 and 22528/13, [Both in Class 2 (iii), Dyes &c.], or the dyestuff from quinone and p-chloraniline, or the dyestuff obtained from m : m1-diamilido-dichloroquinone and ammonium sulphide.  Instead of monobromindigo, monochlorindigo or dibromindigo may be used. The preparations dissolve readily in water and dye wool reddish-black, greenish-black &c. shades.