baber/WOPTO huggingface dataset:
Patent GB-684338-A (GB)
Title: Improvements relating to the measurement of frequency or rotational speed
Inventor: HARRISON SAMUEL MARTIN
IPC: G01R23/02
Filed: 1950-04-03
Abstract: 684,338. Electric indicating systems. NAPIER & SON, Ltd., D. April 3, 1951 [April 3, 1950], No. 8279/50. Class 40 (i) [Also in Group XXXVI] A shaft A whose speed is to be measured or kept constant carries means, e.g. a diametral magnet co-operating with pick-off coils B, C, for producing a two-phase potential in synchronism with the shaft rotation, the two phases being fed to the grids of respective pentode amplifiers D, E. The suppressor grids of these tubes are fed from an adjustable oscillator F, whereby the amplified signals are modulated at the oscillator frequency, and fed over respective gain -control potentiometers H to the X and Y plates of a cathode ray tube C. The oscillator frequency is adjusted to six-times that of the pick-off output when a readily identifiable stationary trace of the form shown in Fig. 2 having six pear-shaped lobes is produced. The shaft speed is then read off from the oscillator frequency. To keep the shaft speed constant the oscillator is first adjusted to the corresponding frequency after which the shaft speed is adjusted to maintain the CRT trace stationary. A single phase pick-off employing, e.g. a light sensitive cell, or a microphone, may be used with a phasesplitter, the phase adjustment of which may be ganged to the oscillator control so that the relative magnitudes of the two phase outputs from the phase splitter are rendered independent of frequency.
Patent GB-1300646-A (GB)
Title: Improvements in devices for actuating and adjusting the opening of hatches
IPC: E05C17/30
Filed: 1970-02-20
Abstract: 1300646 Telescopic stay solutions ETABS GEORGES KLEIN 20 Feb 1970 [20 Feb 1970] 8310/70 Headings E2F and E2A A stay for opening a panel (e.g. a window) pivotal about a horizontal axis comprises a rod 7 having holes 9 slidably disposed in a member 4, a spring biassed catch 11 on the member 4 co-operable with the holes 9, the catch 11 and holes 9 being bevelled so as to permit opening but not closing of the stag, a sliding lock 14 having a hole 15 with a bevelled edge co-operable with the catch, movement of the lock forcing the catch back into a housing 10, and stops 16, 17 disposed at each end of the rod 7 which are co-operable with edges 18, 19 on look 14 in the closed and fully open positions of the stay respectively. Preferably the horizontal axis is on the upper edge of the panel, the panel thus seeking to close under its own weight. The rod 7 may be pivoted to the panel and the member 4 to the frame. The catch 11 may be pivotally disposed in the housing 10, Fig. 4 (not shown) and the spring 12 of sufficient strength to prevent inadvertent movement of the lock 14. The rod may be in the form of a rack and may be arcuate.
Patent GB-723346-A (GB)
Title: Mechanism for use in emptying liquid-containing vessels
IPC: B65G65/23
Filed: 1952-04-02
Abstract: 723,346. Tipping milk churns and other vessels. WRIGHT HARGREAVES ENGINEERING CO., Ltd., and BOOTH, S. R. June 19, 1953 [April 2, 1952], No. 8342/52. Class 78 (4). Cans or other liquidcontaining vessels are emptied by a platform 16, Fig. 3, which is turned about an axis 18 to cause the vessel to tip about abutment means 19. In the machine illustrated milk cans are pushed by projections 15 on endless chains 12 along a guideway on to the platform 16 which comprises angle members 16, Fig. 2, and a central member 17. When the platform is tilted the can is tipped about rollers 19 to fall on to a cradle 24 which has been lowered to the position shown in broken lines in Fig. 3 and which then raises the can to the inverted position shown at C on a drying rack or discharge conveyer. During the tipping motion the contents of the can are delivered to a trough 21 formed with a perforated bottom 22 leading to a discharge outlet 23. The shaft 18 of the tilting platform is driven by projections 37 (Fig. 4) on a chain 38 guided round sprockets 39, 40, 45. The projection 37 first engages an arm 43 fast on a shaft 20 to raise a pin 33 carried on an arm 34 out of a notch in a disc 31 by which the shaft 18 is normally locked. The projection 37 then enters a slot 36 in a disc 35 by which the shaft 18 is driven through 180 degrees. The next can is received by the face of the platform 16 thus disposed upwardly. The cradle 24 comprises a pair of spaced arms, Fig. 2, fast on a shaft 25 on which is also mounted a bell-crank 47 carrying a counterweight 48 and pivoted to a link 46, Fig. 3, formed with a slot 47 sliding on a pin carried by a crank 49 by which the cradle is driven in correct relation with the movement of the platform. Specification 652,829 is referred to.
Patent GB-823912-A (GB)
Title: Improvements in or relating to the twisting and crimping of textile yarns
Inventor: SCRAGG FREDERICK
IPC: D02G1/08
Filed: 1956-08-23
Abstract: 823,912. Crimping yarns; twist tubes. SCRAGG & SONS Ltd., E. Aug. 14, 1957 [Aug. 23, 1956], No. 8378/58. Divided out of 818,950. Classes 120(2) and 120(3) In a yarn crimping process, false-twist is imparted to a running synthetic filament yarn by engagement of the yarn with a fixed friction surface of a solid of revolution and movement of the yarn at right angles to its own axis at the locus of contact with the surface. As shown, yarn 13 drawn through a heater (not shown). wherein the twisted yarn is set, passes through guides 16 and 17 between which it travels across a convex friction surface 10 presented by an annulus of resilient material such as synthetic rubber fixed within a ring 18 carried by a bracket 19, thence through the lower part of a hollow spindle 15 which carries the guides 16, 17 and, when rotated, causes the yarn to be rolled about its own axis to impart false twist thereto.
Patent GB-435405-A (GB)
Title: Improvements relating to the control of electric motors in traction systems
IPC: H02P7/298
Filed: 1934-03-19
Abstract: 435,405. Master control of D.C. motors. RAMSDEN, H. K., 26, Ashlands, Ashton-on- Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. March 19, 1934, No. 8626. [Class 38 (iii)] Regenerative and non-regenerative braking.- A system, such as that described in Specification 429,194, in which a single controller produces first regenerative braking, and then, when the speed has been reduced to a certain point, rheostatic braking, is so arranged that motoring conditions can be restored after rheostatic braking has been established without returning the controller to its " off " position. In the arrangement shown the controller CS on being moved from the " off " position to the position 1, (a) closes the line contactors LS1, LS2 in series with the armature A of the motor and (b) closes the contactors S3 ... S6 thereby short-circuiting corresponding sections of a resistance r# in series with the shunt field-winding SHF. On moving through the positions 2 .. 5 it successively closes contactors R1 .. R4, shortcircuiting sections of a resistance r in series with armature A and a series winding SF and short-circuits the remainder of the resistances rf by means of contactors S1, S2. On passing from positions 6-11 it successively reintroduces the sections of the resistances rf, and the motor is brought to its maximum speed. On returning the controller to position 1 the sections of the resistance rf are successively returned to the circuit, producing regenerative braking, but the whole of the resistance r is still short-circuited by means of an interlock R4-in, controlled by the coil which controls the contactor R4 and producing an alternative circuit for this coil. When the voltage in the series winding SF falls so low that regenerative braking becomes ineffective a relay RR closes and closes a contactor B in circuit with the armature A and resistance SF to cause rheostatic braking. The windings SHF, SF are so arranged that during both regenerative and rheostatic braking the shunt and series fields are opposed. The circuit of the contactor B contains an interlock R4-in, so that it cannot be closed unless the contactor is closed, and an interlock B-in which keeps it closed as long as the controller is in the position 1, whatever the position of the contactor R4. An interlock B-out also opens the contactors LS1, LS2. On returning the controller to the position 2 the contactor B and interlock B-in are opened, and the interlock B-out of thecontactors LS1, LS2 closed. The contactor B is also closed, and the interlocks B-in and B-out operated, on the occurrence of excess voltage by an over-voltage relay OR.
Patent GB-954085-A (GB)
Title: Shaped articles from polytetrafluoroethylene and process for their manufacture
IPC: C08F14/26
Filed: 1961-03-09
Abstract: Polytetrafluoroethylene is prepared by a process which comprises subjecting monomeric tetrafluoroethylene to high energy ionising radiation at a dose rate of 0.001 to 1.0 megarad per hour, in the substantial absence of oxygen at a polymerization initiation temperature of -75 to 80 DEG C., and carrying out the polymerization reaction at a temperature of -75 to 185 DEG C.  The tetrafluoroethylene may be polymerized continuously in the gaseous state and is preferably free from inhibitors, diluents or other impurities.  The radiation may be provided by a cobalt 60 source, high speed electrons from an accelerator or generator, or X-rays. The polymer may be formed into shaped articles, e.g. plates, discs, sheets and bars, which may be sintered. The polymer may be cold worked, e.g. by rolling, impact moulding or extrusion, before or after sintering, to form articles such as gaskets, washers, tank linings, cover plates, tapes and containers.
Patent GB-1369713-A (GB)
Title: Direct-air tumbler-driers and air-recirculatory conversion means therfor
IPC: D06F58/02
Filed: 1973-02-23
Abstract: 1369713 Tumble drier C H MORGANS 23 Feb 1973 [24 Feb 1972] 8704/72 Heading F4G In a direct-air tumbler-drier having atmospheric air drawn through an inlet 1, Fig, 1. the air being heated and passed through a tumbler container 3 to an exhaust outlet, a controlled amount of heated air is re-circulated. The air is heated by a heater 2, passes from the tumbler container 3 into a lint trap or filter 4, the latter communicating with a fan 5. The latter draws air through the drier and connects with a flue 6 which leads to a chimney 7. A branch connection 8 is positioned in between the flue 6 and the chimney 7 and connects to a filter nozzle 9 which is located adjacent the air inlet 1 of the drier. A valve 10 is provided to control the quantity of previously circulated air that is to be admitted with the atmospheric air. Conveniently flexible ducting 11 is used to connect the branch connection 8 to the filter nozzle 9. The heater may be powered electrically, by steam or by the combustion of oil or gas.
Patent GB-1149698-A (GB)
Title: Mercury column pressure gauge
Inventor: RAINERO GIOVANNI
IPC: G01L7/18
Filed: 1968-02-22
Abstract: 1,149,698. Pressure gauge. G. RAINERO. Feb.22, 1968 [Feb.25, 1967], No.8717/68. Heading G1L. In a mercury column pressure gauge, such as for use in tyre pressure measurements, a tube 3, closed at its upper end, is provided below the closed end with an opening 4 communicating with atmosphere through a valve 6 automatically operated in response to the mercury level so that the valve 6 is open when the mercury level is below the opening 4 and closed when the mercury level is above the opening 4. Two graduated pressure scales 11 are provided, one for pressures when the valve 6 is open and one for when the valve 6 is closed. The float operated valve 6 may be replaced by an electromagnetically operated valve.
Patent GB-218362-A (GB)
Title: Improvements in or relating to overhead travelling gear for lifting and like purposes
IPC: B66C7/00
Filed: 1923-03-27
Abstract: 218,362. Mitchell, F. G. March 27, 1923. Overhead travellers.-In self-contained travelling power hoists working on telpher systems of the kind in which the over-all height of the track is reduced by arranging the reduction driving-gear inside the hoisting drum, so that the motor can be located close to its associated drum, worm reduction gearing, preferably selfholding, is used. In the illustrated construction irreversible, epicyclic, triple worm gearing of known type, as shown in Fig. 3, is fitted in the interior of the drums d<1> which are driven from the common motor e. A small solenoid brake may be fitted to prevent continued running of the motor armature after the current is cut off.
Patent GB-350599-A (GB)
Title: Improvements in or relating to forming material into tubular form
IPC: F02D15/00
Filed: 1930-03-19
Abstract: 350,599. Angular bending ; coiling. YOUNGSTOWN SHEET & TUBE CO., Youngstown, Ohio, U.S.A.-(Assignees of Adams, J. L. ; Youngstown, Ohio, U.S.A.) March 19, 1930, No. 8824. Convention date, May 23, 1929. [Class 83 (iv).] Flat metal strip s is gradually curled up at the sides to form a tube when the abutting edges are subsequently welded together, the semicircular curling dies 2 being linked together to form two endless chains which converge to bend in and form the strip and then diverge to free themselves from the formed tube. The chain dies carry rollers 12 which roll over fixed backing plates 13 set at the required angle of convergence, and are guided at top and bottom by other rollers. The chain sprockets 22 are driven from a variable speed electric motor 24 through changeable gears 25 and worm.drives. Each die 2 has a semicircular working face with renewable liner 7 which together with mandrel rolls 33 on fixed brackets form a pass. Sag of the chain dies is prevented by top and bottom rollers 17 in the dies running on horizontal rails 18. Scale protectors 19 are provided. The flat strip rests on support 32, Fig. 4, and its edges are guided by rollers 38 at the ends of a slightly flexible cross-piece which can be adjusted for height by screw 39. If the formed tube tends to have a curvature longitudinally due to stretching of the edges the chain of dies is adjusted to sag so as to counteract this. Figs. 5 and 6 show an arrangement for coiling of a flat strip to form a helically wound tube, one semicircular die having a recess 41<1> to hold the edge while the other die does the curling, the edge being free to leave the recess and form the helix at the appropriate bending stage. In this case one chain travels parallel to the axis of the tube being formed along the bending position. In a modification the dies are backed up by endless chains which are themselves backed up by a platen. In another modification, Fig. 12, each die is made longer than usual, thus forming chains with longer fixed links, the top and bottom chains being offset longitudinally to one another to facilitate the movement of the dies when rounding the end sprockets.
Patent GB-643917-A (GB)
Title: Improvements in conveyor mechanism
IPC: B65G23/00
Filed: 1948-03-25
Abstract: 643,917. Endless-chain conveyers. FOUNDRY MECHANISATIONS (BAILLOT), Ltd. (Baillot, A. J.). March 25, 1948, No. 8870. [Class 78 (i)] A foundry mould conveyer comprises load-supporting plates 1 supported by rollers 7 mounted on axles 6 carrying rollers 8 running on rails 9, the plates being connected by pins 11 to an endless chain comprising male and female links 2, 3 connected to one another by pins 5 passing through flats 10, 11 on the axles 6. To each flat 10 is carried a plate 12 carrying rollers 13, 14 which engage between the rails 9 and effect swinging of their corresponding axle 6 at the curved portions of the path of the conveyer. Each plate 1 is supported by two pairs of rollers 7 and each female link 3 carries two rollers 15 between which engages one of a number of driving members 18 secured to a spur-wheel 17 mounted at one end of the conveyer and driven through gearing 19 by an electric motor.
Patent GB-404507-A (GB)
Title: Improvement in collapsable broccoli crates
IPC: B65D85/34
Filed: 1933-03-24
Abstract: 404,507. Collapsable crates. MANNELL, R. H., 4, New Street, Penzance, Cornwall. March 24, 1933, No. 8872. [Class 18.] In collapsable crates for broccoli, the corner bars B nailed to the sides turn on nails A<1> in the ends, while the bottom comprising battens J nailed to cross bars H rests slidably on bottom bars and beneath laths E on the ends. A locking-bar G pivoted on a nail L in the bottom is adapted to be turned into the position shown between the lath E and the battens J to lock the bottom in position. When the crate is collapsed, the battens of the top and bottom are interposed in the spaces of the battens of the sides to form a compact article.
Patent GB-422750-A (GB)
Title: Improvements in and relating to regulation devices for clocks
IPC: G04C11/04
Filed: 1934-03-21
Abstract: 422,750. Clocks. SCHONBERG, G., Lorsbach, Hochst-on-Main, Germany. March 21, 1934, No. 8872. Convention date, March 21, 1933. [Class 139] Synchronizing ; escapements.-The scape wheel S is in permanent driving connection with the minute arbor, but may be displaced axially so as to disengage it from the anchor H during synchronizing, the transmission ratio being such that the wheel S is brought into a constant position when acted upon by a pin G which coacts with a heart cam K on the scape wheel arbor W1. Once every twelve hours a cam C on the hour arbor W3 closes contacts F and when a relay B is energized by the synchronizing impulse from a master clock it closes contacts b : this results in the energization of the synchronizing magnet E which attracts its armature A and moves rod R axially to the right. An arm on rod R also carries arbor W1 to the right so that wheel S is disengaged from anchor H. At the same time a disc D allows spring r to swing a lever L counterclockwise, looking down on it, whereby a pin G on the lever engages an edge cam on a sleeve K rigid with arbor W1. The edge cam is of heart shape with a central depression M so that pin G settles in this depression and rotates the shaft W1 to correct position. Other such clocks, such as T, are similarly synchronized.
Patent GB-583908-A (GB)
Title: Improvements in liquid operated classifiers
IPC: B03B5/62
Filed: 1944-05-11
Abstract: 583,908. Upward current classifiers. PHIPPS, J. D. B. May 11, 1944, No. 9015. Addition to 553,604. [Class 82 (ii)] In a hindered settling classifier as described in Specification 566,158 the submerged body and the partly-submerged body are arranged to operate independently of one another over a part or the whole of their range of movement. As shown in Fig. 7 applied to a sand classifier, the submerged body 18 has a tubular extension 34 to which are fixed internal bearing rings 67 at the top and 66 at the bottom which latter engage a ring 65 fixed to n tube 36 supported by a channel framework 37 when the body 18 is in its lowest position. The tube 34 has also external rings 68 near the bottom and 69 at the top which engage ring 72 and bearing bush 71 of a tube 70 which carries a compensating float 40 and limits the travel of the body 18 and the float 40 relative to each other. At no load the body 18 and the float 40 will be in the lowest position and when dirty sand is fed into the classifier both will rise independently to equilibrium positions until the mud content of the dirty sand is such that the body 18 overtakes the float 40 from which time the two move together. The buoyancy of both the float 40 and the body 18 may be adjusted by admitting sand and water, or water, into them. In a modification, Fig. 16 (not shown), both bodies move independently of one another all the time. In either modification a second pump may be employed to draw off particles of a predetermined size by means of a suction pipe 79, Fig. 8, passing into the parallel portion 76 of the sand cone through a gland 80 and capable of being adjusted so that particles may be drawn from any point between the centre and circumference of the column of liquid by a hand wheel 83 and shaft 81. In a further modification, Fig. 17 (not shown), the sand cone is replaced by a volute having its base in the form of a cone to prevent the building-up of a cone of sand.
Patent GB-561966-A (GB)
Title: Improvements in and relating to the preservation and storage of perishable materials
IPC: A23L1/00
Filed: 1942-07-01
Abstract: Dried perishable edible materials, particularly dried milk, eggs or vegetables, are preserved during storage from contact with moisture, air or gases by forming a continuous coating of a gelatine composition containing a plasticising agent, such as glycerol or sugar, over compressed blocks, or packages, of the material.  The blocks, or the material in a loose state may be first wrapped with waxed or glucose paper, a cellulose film or other sheet material, which may be previously formed into a box or carton.  The blocks or packages should be formed so as to have no sharp corners or edges; the material forming a wrapping may have applied to it strips of the gelatine composition at positions corresponding with the edge of the package.  The composition may be applied by spraying, dipping or painting and the coated bodies treated in moulds to render the coating smooth or uniform or it may be applied by lining with the composition moulds in which the edible material is compressed.  It may also be applied in sheet form and joined by heat and pressure. Preferably, the blocks or packages are dipped in an aqueous solution of gelatine and glycerol so that two-thirds of the surface is covered, drained, dried and the uncoated portion dipped and dried. The solution is held in a metal bath having a thermostatically-controlled water jacket and is stirred continuously. In the case of packages, the solution may contain Turkey red oil or other detergent to overcome the repellent effect of grease and the sodium salt of ortho-phenyl-phenol to prevent mould or bacterial growth.  Inert gas may be introduced into the packing through a hole punctured in the covering and subsequently sealed.  Specification 557,227 is referred to.  The Provisional Specification is not confined to edible materials and describes also the application of a single layer, or several layers of the same or different composition, e.g. sugar, dextrine, starches and hemi-celluloses and the like, such as agar-agar and carrageen moss.  Reference has been directed by the Comptroller to Specification 639/03, [Class 49], and U.S.A. Specification 1,914,351.
Patent GB-1281466-A (GB)
Title: Phenanthrene carboxylic acids and anhydrides and process for their preparation
Inventor: ASKAM VERNON
IPC: C07C62/34
Filed: 1970-02-25
Abstract: 1281466 Hexahydrophenanthrene dicarboxylic acids and anhydrides BIOREX LABORATORIES Ltd 19 April 1971 [25 Feb 1970] 9154/70 Heading C2C Anhydrides of the formula and dicarboxylic acids of the formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP>, which may be the same or different, are hydrogen atoms, hydroxyl groups or C 1-4  alkoxy radicals, with the proviso that when only one of R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> is a methoxy radical, then the other two symbols cannot both be hydrogen atoms, may be obtained by dehydrating a compound of formula to give a vinyl compound of the formula which is reacted with maleic anhydride to give the compound of Formula (I); the compound of Formula (I) may be hydrolysed, e.g. with aqueous mineral acid, to give the acid of Formula (II). The dehydration reaction may be effected by heating compound III in an organic solvent which forms an azeotrope with water in the presence of a polymerization inhibitor.