baber/WOPTO huggingface dataset:
Patent GB-912772-A (GB)
Title: Improvements in heat exchange processes
IPC: F28C3/04
Filed: 1961-04-21
Abstract: In a heat exchange process for multi-stage cooling and heating of first and second liquids respectively, the first liquid is cooled by evaporating a volatile fluid in direct thermal contact therewith, the second liquid is heated by condensation of the evaporated vapour, and the condensed fluid is separated from the second liquid in the heating stages and returned to the <PICT:0912772/III/1> cooling stages.  The process may be applied to the purification of sea water (see Group XIII) or, as shown, to the separation of nitrate from aqueous solution.  Crude deposits including sodium nitrate are mixed with mother liquor and heated in condensers 64-66 so as to form a concentrated solution.  Undissolved deposits are removed in saturator and separator 67 and the solution is then cooled in evaporators 61-63, causing the sodium nitrate to crystallize out.  The crystallized nitrate is removed in separator 68 and the mother liquor is recirculated to the first condenser 64.  The invention can be applied to concentration of other aqueous solutions, e.g. copper sulphate solutions.  Specification 806,727 is referred to.
Patent GB-584456-A (GB)
Title: Improvements in the production of chlorine dioxide
IPC: C01B11/02
Filed: 1944-07-31
Abstract: In the production of chlorine dioxide by reacting chlorine with an aqueous solution of a water-soluble chlorite and recovering the product in a current of inert gas, the chlorine and inert gas are separately and concurrently injected into the solution whereby a product free from chlorine is obtained. Preferably the inert gas is supplied at a point above the point of introduction of the chlorine, but when air is used, this may be introduced below the chlorine.  The proportion of air used is such that explosive mixtures are avoided. The gases may be introduced in finely dispersed condition, and intimate contact with the solution be ensured by having packing members therein. The reaction may take place in a lined tower or series of towers. Specification 456,569 and U.S.A. Specification 2,131,447 are referred to.
Patent GB-705354-A (GB)
Title: Improvements in or relating to couplings for fluid pipe lines
IPC: F16L37/133
Filed: 1952-06-10
Abstract: 705,354. Pipe couplings. BENDIX AVIATION CORPORATION. June 10, 1952 [June 22,1951], No. 14622/52. Class 99 (1). A sleeve 18 receives in fluid-tight engagement nipples 10, 11 attached to the ends of fluid pipe lines and provided with poppet valves 15, e.g. spring-loaded ball valves, which are opened and closed by a cam 35 mounted on a shaft 38 extending through the sleeve and rotated by a handle 40. The cam has a width less than and a length greater than the spacing between the valves. There may be a sleeve 22 slidable on the sleeve 18 and having shoulders 23, 25 engaging behind shoulders 24, 26 of the nipples, one end of the sleeve 22 being formed with a number of spring fingers 28 moved radially into and out of engagement with the shoulder 26 of the nipple 11 by an outer sleeve 30 slidable on the sleeve 22. The co-operating sealing surfaces of the sleeve 18 and the nipples 10, 11 may be such that the cam 35, when in the valve-opening position, is disengaged from the valves before the nipples are entirely separated from the sleeve. To prevent excessive strain on the pipe lines, e.g. between a tractor and a towed implement, automatic disconnection of the coupling can be provided by connecting, e.g. by a wire, a handle of the sleeve 30 to an abutment on the tractor so that the wire tightens before the pipe line and thereby provides the necessary tension to pull the sleeve 30 into the releasing position.
Patent GB-144097-A (GB)
Title: New or improved combination rear lamp for automobiles and other vehicles
IPC: B60R13/10
Filed: 1919-06-10
Abstract: 144,097. Kemp, E. June 10, 1919. Vehicular lanterns.- In a combined rear lamp and licence - number indicator, the numbering or lettering is cut out of sheet metal or other opaque plate e, which is inserted, together with a front clear-glass plate d and a rear translucent plate f, such as frosted or opal glass, or mica, in grooves in the open front of a rectangular box a containing a source of light. The coloured danger-light may be produced by cutting an aperture in the plate e, or leaving a gap between the end of the plate e and the end of the box, the translucent plate f having a coloured extension for registering with the aperture or with the gap, or a coloured plate being inserted in the gap, or over the aperture, or a lens with a coloured cover being inserted in the aperture. The back of the box may be provided with an inclined clear glass plate h for enabling the interior of the vehicleto be illuminated. The source of light is arranged immediately behind the aperture, and one or more reflectors are arranged at either or both ends of the casing.
Patent GB-456778-A (GB)
Title: Improvements relating to steering wheels and in the manufacture thereof
IPC: B62D1/08
Filed: 1935-05-20
Abstract: 456,778. Making wheels. BIRMING- HAM ALUMINIUM CASTING (1903) CO., Ltd., and VAUGHAN, C., Dartmouth Road, Smethwick, near Birmingham. May 20, 1935, No. 14647. [Classes 83 (i) and 83 (ii)] Casting composite articles.-In casting a hub onto the hollow spokes of a steering wheel hollow thimbles of cast or pressed metal are inserted in the spoke ends. The rim a is made from a strip of metal bent into channel section and circular form. The bottom of the channel, which is inside, is then pressed to form finger grip projections and the channel closed and welded. Tubular metal spokes of desired section and taper and having shaped ends f are then welded to the rim, their inner ends are closed by thimbles g and an aluminium or other metal hub b is cast about them. Pressed thimbles may have a partial or complete flange which is welded to the spoke. Cast aluminium or other metal thimbles may have lugs i, Fig. 4, adapted to engage notches k, Fig. 5, in the spoke end. The spoke may have flanges to engage the cast metal. The thimbles may be perforated to allow escape of air during casting.
Patent GB-618255-A (GB)
Title: Improvements in or relating to photographic and cinematographic cameras, provided with rangefinders
IPC: G03B13/20
Filed: 1946-05-15
Abstract: 618,255. Photographic cameras with coupled range-finders. VINTEN, C., DUNNINGHAM, I. J., and VINTEN, Ltd., W. May 15, 1946, No. 14680. [Classes 97 (i) and 98 (i)] A photographic or kinematographic camera combined with a short home base range-finder has two reflectors at opposite ends of a rangefinder base-line perpendicularly bisected by the optical axis of the camera objective and both rotatable about axes perpendicular to the plane containing the base-line and the optical axis, means for simultaneously rotating both reflectors, means for focusing the camera objective, and mechanical means connecting the reflector rotating means and the objective focusing means. Provision may be made for interchangeable camera objectives. As shown, mirrors 4a, 4b rotate with toothed pinions 8 which mesh with racks on a bar 7 so that the rotation of the mirrors is equal and opposite. Rays admitted by the range-finder objectives 3a, 3b and reflected by the mirrors 4a, 4b pass to fixed mirrors 5a, 5b, 6a, 6b which reflect each beam twice through a right angle to bring the beams to a combining prism 2, offset from the range-finder base. The mirrors are set for ranging by a rod 15 pivoted at one end to a crank on the axle of the mirror 4a, and spring- urged to bear by a roller 14 at the other end against a cam 13, rotatable through gears by an external handle. The camera objective slides axially for focusing in a cylindrical socket in the camera case. The socket has an upper platform on which a plate is mounted to slide within limits, and to this plate the objective is clamped by a knob 32. A backward extension of the upper part of the mount carries a cam groove of rectangular cross-section in a plane plate. Above the objective a bar 22 is mounted to slide horizontally on the camera casing, and has a rack engaging a toothed pinion 26 on a shaft 27 of the cam 13 or associated gearing. Movement of the range-finder setting mechanism thus imparts a horizontal movement to the bar 22, which has a projection 24 with a roller mounted thereon and engaging the cam groove to effect the focusing of the objective. Interchangeable objectives of different focal length, each with its own characteristic cam groove, may be provided. According to the Provisional Specification, the lens mount may be made in two relatively slidable interengaged parts, which may be initially adjusted and clamped in position.
Patent GB-753275-A (GB)
Title: Improvements in rotary compressors
IPC: F04C18/08
Filed: 1954-05-19
Abstract: 753,275. Rotary compressor. SOC ANON. A. SAURER. May 19, 1954 [Oct. 24, 1953], No. 14722/54. Class 110(2) A compressor of the meshing screw type similar to that in Specification 753,772 [Group XIX], in which the trailing edge 21 of the crown of each tooth 13 of the female rotor 11 is advanced with respect to the rotor 11 by a flattening 25. This advance a is between 20 per cent and 35 per cent of the length b of the remaining cylindrical crown. The flattening 25 is approximately perpendicular to the centre line M of the adjacent tooth gap and the angle # at the edge 21 between the flattening 25 and the crown is obtuse. In place of the flattening 25 an arc of a circle radius R may he used.
Patent GB-868874-A (GB)
Title: Improvements in or relating to ice block release apparatus
IPC: F25C1/24
Filed: 1959-04-30
Abstract: 868,874. Ice - making. GENERAL MOTORS CORPORATION. April 30, 1959 [May 23, 1958(2)], No. 14758/59. Class 29 [Also in Group XXVI] An ice-block release apparatus utilizes the thermal expansion of water or other liquid on cooling around 0‹C. to effect the release of ice-blocks, the liquid expanding into a space having a smaller cross-sectional area that that of a chamber containing the liquid. A try 10, Fig. 1, is provided with a removable grid 15 comprising a longitudinal wall 16 and transverse walls 17, the latter being tiltable from the position shown to a vertical position to release ice-blocks. A motor 20 comprises a chamber 22, Fig. 2, containing water, or a mixture of water and alcohol, which on cooling around 0‹C. expands into a cylinder 23 of smaller cross-sectional area to actuate a piston 33 and, through stud 37 passing through a lug 34 on the piston 33 and ears 36 on an actuator bar 18, the transverse walls 17 which are engaged with bar 18. In a modification Fig. 5, the ice cubes after formation are released and ejected into a receptacle the tray being re-filled with water and the process repeated. When the liquid in chamber 151, expands into cylinder 165, the piston 153 is moved to the left. Through pin 157 an actuator bar 143 is moved and this causes transverse grid walls 137 connected thereto to tilt towards the vertical to release the ice blocks. When the pin 157 reaches the end of a slot 171 in a short sleeve 168 connected by a pin 172 to a shaft 173, the latter is moved to the left. Since shaft 173 has a helical thread 174 engaging a fixed end member 122. this movement causes rotation of the shaft 173 and therefore also of sleeve 168 and sleeve 134 which carries the grid so that the latter is rotated out of the tray 121. A deflector ensures that the ice cubes are swept out of the tray 121 into a receptacle 120, Fig. 14. A mercury switch 176 on the end of shaft 173 closes a circuit so that solenoid operated valve 189 is opened and a metered quantity of water flows through pipe 190 into the tray 121. Simultaneously a heat 177 is energized and the liquid in chamber 151 is warmed so that piston 153 may move to the right, Fig. 5, under the influence of spring 164. Eventually the weight of ice blocks in receptacle 120 opens switch 186 to render the heater 177 and solenoid operated valve 189 inoperative.
Patent GB-1120135-A (GB)
Title: Improvements in or relating to telephone systems
Inventor: PAGE ALBERT EDWARD
IPC: H04Q3/00
Filed: 1966-04-04
Abstract: 1,120,135. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 3 April, 1967 [4 April, 1966], No. 14868/66. Heading H4K. A cross-bar distributer has a primary stage DSA serving originating trunks OT and terminating trunks TT and has a secondary stage DSB serving ordinary subscribers ORD and coin-box subscribers CB and arranged for multiple group working by means of auxiliary select magnets, at least one of the DSB switches serving both types of subscriber. To distinguish between the subscribers the coin-box subscribers are connected to those outlets of the DSB switches that are switched through on actuation of the auxiliary select magnet 1AM. Off-normal contacts of the select magnets 1AM, 2AM, 3AM, are wired to operate relays CD or OD to indicate coin box or ordinary subscribers. Each DSA switch serves a group of five originating trunks OT1-OT5 of which the first two are provided with coin-fee check circuits. A call from a coin-box subscriber, therefore, operates relay CD to operate test relays TA, TB to make available only those originating trunks with coin-fee check circuits. A call from an ordinary subscriber, in operating OD, causes test relays TC-TE to operate and make available the trunks OT not specially equipped.
Patent GB-708597-A (GB)
Title: Radio frequency filter
IPC: H01P5/12
Filed: 1952-06-13
Abstract: 708,597. High frequency electric filters. STANDARD TELEPHONES & CABLES, Ltd. June 13, 1952 [July 24, 1951], No. 14956/52. Addition to 704,050. Class 40 (8) A high frequency electric filter comprises a broad conductor member 4, with another conductor 5 which is narrow forming a transmission line with it as described in the parent Specification, the line 5 being so shaped as to introduce inductances and capacities into the line so that it forms a filter section. In the example shown the spirals 6 and 9 form inductances in parallel across the line while the sinusoidal sections 7 and 10 form inductances in series in the line. Broken parts 8 of conductor 5 form capacities in series in the line, while spirals 6 and 9 in conjunction with conductor 4 form capacities in parallel with the line. The filter may be provided with a screen over it coated with lossy material. In alternative arrangements inductance may be provided by forming a portion of conductor 5 as a helix, and capacity may be formed by connecting plates to conductor 5 which are in proximity to conductor 4 and dielectric material may be placed between these plates and conductor 4. Specification 708,601 also is referred to.
Patent GB-1122714-A (GB)
Title: Improvements in or relating to baffles
IPC: B01F7/16
Filed: 1967-03-31
Abstract: A baffle for suspension within a mixing vessel comprises a plurality of rounded spaced parallel members joined at one end to each other and to a mounting member, at least the parallel members being coated with glass, ceramic material or vitrified enamel.  As depicted there are two such members forming an h-shape.  The orientation of the baffle may be adjustable.
Patent GB-707126-A (GB)
Title: Improvements relating to drop hammers
IPC: B21J7/44
Filed: 1952-06-13
Abstract: 707,126. Forging-machines. EUMUCO AKT.- GES. FUR MASCHINENBAU. June 13, 1952 [June 14, 1951], No. 14987/52. Addition to 693,147. Class 83 (4). [Also in Group XXV] In a drop hammer of the type according to the parent Specification in which the hammer is raised by winding a link chain 23, Fig. 2, over the periphery of an eccentrically mounted disc 20, a portion 31 of the disc periphery is made circular so that different heights of die may be accommodated, the length of the arc being approximately equal to the difference in height between the smallest and largest dies. The chain 23, Fig. 4, comprises inner links 32 with integral bearing bosses 35 engaged in recesses 36 of outer links 33 and held in engagement by bolts 39.
Patent GB-546328-A (GB)
Title: Improved potato harvesting machine
IPC: A01D33/08
Filed: 1941-11-21
Abstract: 546,328. Harvesting potatoes. KING, J. Nov. 21, 1941, No. 14997. [Class 6 (iii)] [Also in Groups II and XXX] A potato-harvesting machine comprises a spade 15 adapted to scoop a complete drill into a receptacle 16 between frame plates 1, 2, an elevator consisting of a pair of chains 19 carrying curved slats 20 and running over sprockets 21, 22, or a band with outwardly-extending tines, for conveying the contents of receptacle 16 over an inclined earth screen 18 and depositing the residue of the screen upon a reciprocating riddle 24, which separates the haulms and deposits them at the side while allowing the potatoes and any remaining earth and stones to fall upon a sorting conveyer 28 having spaced laths 29, preferably of triangular section, adapted to retain the larger potatoes and deliver them through a hopper 35 into sacks 34 and allow the smaller potatoes &c. to pass through to a hopper 39 for delivery to an auxiliary screen 40, adapted to deliver medium-sized potatoes, suitable for seed, to a trough 41 and deposit the very small potatoes &c. on the ground by way of a chute 42.. The shaft 46 of the elevator driving sprockets 21 is driven by a belt 45 from a shaft 43, adapted to be coupled to the driving shaft of the tractor, or with the axle of a horse-drawn machine, the crank shaft 25 of the riddle 24 being driven by a belt 48, and the shaft 57 of the conveyer driving sprockets 31 by a belt 51 and bevel gearing, from the shaft 46. Chain and sprocket drives may replace the belts and pulleys. The riddle 24 may be pivoted to a link 27 or may be pivoted to the plate 26 and operated by a cam. A rotary fork may be provided above the riddle. The hopper 35 is provided with a pivoted flap operated by a handle 38 for directing potatoes into one sack or another. Attendants may ride on the platform 36 to fill sacks and pick out stones caught in the conveyer. The draw-bar 3 may be articulated at 58 for adjusting the depth of entry of the spade in the ground and may be adjustable transversely of the frame. In the tractor-drawn machine shown, the axle 4a of the wheels 4 is journalled in pivoted arms 5 connected by links 7 to crank arms 8 of a shaft 9 operable by a lever 11 for raising and lowering the frame.
Patent GB-1474932-A (GB)
Title: Ultrasonic probe
IPC: G10K11/02
Filed: 1975-03-13
Abstract: 1474932 Ultrasonic probes LLOYDS REGISTER OF SHIPPING TRUST CORP Ltd 13 March 1975 [4 April 1974] 15015/74 Heading H4J An ultrasonic probe incorporates a wedge of polybutadiene rubber. A wedge of polybutadiene rubber has a face 13 in contact with an article 14 to be flaw tested and which makes an angle A with the face against which a piezoelectric transducer 11 abuts. If article 14 is of aluminium bronze, sound vibrations travel along the surface to be reflected at a surface crack 15. If article 14 is of polyethylene vibrations enter the surface at an angle of about 70 degrees to be reflected from a below surface crack. The wedge is particularly useful in flaw testing of castings such as ships' propellers, the attenuation of sound waves in polybutadiene rubber being sufficiently low. Another application is to the flaw detecting of poly. ethylene gas pipe liners.
Patent GB-1504032-A (GB)
Title: Muting circuits
IPC: H01L29/73
Filed: 1975-04-11
Abstract: 1504032 Muting SONY CORP 11 April 1975 [30 April 1974] 15016/75 Heading H3T In the circuit of Specification 1,417,794 for muting the output of an amplifier during switch-on and switch-off of the power supply, the transistor which shorts the amplifier output to a fixed potential point has a potential barrier 7, 7a (Fig. 3) in the emitter and/or collector region at a distance from the respective junction Je, Jc that is less than the diffusion length of minority carriers in the region concerned. A further unconnected p-region 4 may be provided to reduce the gradient of minority carriers in the emitter region.
Patent GB-1418361-A (GB)
Title: Clip
IPC: F16L3/12
Filed: 1973-03-29
Abstract: 1418361 Clips HILTI AG 29 March 1973 [22 June 1972] 15024/73 Heading E2B A clip of the shape shown is welded to a support at its base 7, 8. Several such clips may be used in regular sequence or in backto-back pairs for securing cables &c.
Patent GB-716525-A (GB)
Title: Improvements in or relating to dispensing containers for drinking straws
IPC: A47G19/32
Filed: 1952-06-16
Abstract: 716,525. Drinking-straw dispensers. WILLIAMS, E. June 16, 1953 [June 16, 1952], No 15100/52. Class 18 A straw dispenser of the kind having a tray 4 carrying the straws joined by a rod 3 to the lid, whereby raising of the lid lifts the straws for withdrawal has a surface beneath the lid which causes it to seat correctly when released in any position The surface may be a cone 6, a curved surface or a series o arms radiating from the rod 3 to join the lid. The body 1 may b transparent.
Patent GB-563129-A (GB)
Title: Improvements relating to magnetically-operated switches for controlling a sequence of operations
IPC: H01H36/00
Filed: 1942-10-28
Abstract: 563,129. Magnetic switches. CIANCHI, A. L. Oct. 28, 1942. No. 15130. [Class 38 (v)] [Also in Group XXII] Two magnets 8, 9 must move before an armature 5 moves to close a circuit 2 3. The circuit 2, 3 may control a motor for operating a too for machining mag nesium, and car only be completec after two or more conditions are satis fied, for example (1) after a fan 14 drawing the magnesium-dust-laden air through water in a tank 12 is operating and (2) after the water in the tank has reached a certain height. The draught of air from the fan impinges on a vane 13 tilting a lever 9a and so removing out of effective influence the magnet 9 which embraces a tube 1 and holds an armature 5 in its upper position. The rising of the water level raises the magnet 8 which embraces the bottom 'of the tube 1 till it is able, provided the magnet 9 is removed, to pull down the armature and allow mercury to flow through holes in the float carrying the armature to complete a circuit between leads 2, 3. Specifications 485,259 and 493,355 are referred to.
Patent GB-1082884-A (GB)
Title: A measuring and controlling device for components in liquid,electrolytic mixtures
IPC: G01N27/06
Filed: 1966-04-05
Abstract: 1,082,884. Determining proportions in a liquid mixture by measuring conductivity. COMPANHIA UNIAO FABRIL S. A. R. L. April 5, 1966 [April 9, 1965], No. 15188/66. Heading G1N. In a process for measuring the amount of sulphuric acid and water in a mixture of sulphuric acid and acetic acid containing up to 5% water, the sample passes through a first conductivity cell 3, is then diluted in ratio 1:1 with water, and passes through a second conductivity cell 8. The conductivity in cell 3 depends on the amount of sulphuric acid and water in the sample whereas the conductivity in cell 8 depends mainly on the amount of sulphuric acid in the sample since the added water renders insignificant any changes in the initial water content of the sample. A control unit 11 responds to the output of cell 8 to control the flow rate of the sulphuric acid. The water content is determined by a calculator 12 and displayed on meter 13. Heat exchangers 1 and 7 ensure the conductivity measurements are made at the same constant temperature. A temperature compensation circuit may correct the measurements if the temperature cannot be maintained constant. Dosimetric pumps 4, 5 for diluting the sample with water are driven by a common motor 6.
Patent GB-712371-A (GB)
Title: Improvements in or relating to shakeout arrangements for foundry moulding conveyors
Inventor: LEEK JOHN WILLIAM
IPC: B22D29/02
Filed: 1952-06-17
Abstract: 712,371. Extracting castings. FORD MOTOR CO., Ltd. May 12, 1953 [June 17, 1952], No. 15200/52. Class 83 (1) In a "shake-out" arrangement for foundrymoulding conveyers, the flask or mould 3 is held on a vibrator 2 between a fixed rail 2a, and a movable rail 5a, whereby flasks or moulds of various sizes may be accommodated. The pivoted, movable rail is counterweighted at 5b so as normally to lie against the rail 2a, and the flasks are pushed onto the rails from the conveyer 1 by a pusher 4. The empty flasks are then pushed along the rails by a pusher 6 onto a platform 7 from which they are returned to the conveyer by a pusher 8.