baber/WOPTO huggingface dataset:
Patent GB-1358274-A (GB)
Title: Photocycloaddition polymerization of bisanthracenes
IPC: B41M5/28
Filed: 1972-03-07
Abstract: 1358274 Polymerizing bis - anthracenes AGFA-GEVAERT 7 March 1972 [19 March 1971] 7376/71 Heading C3R [Also in Division C4] Polymers are obtained by exposing to ultraviolet radiation at 365 nm. or above, in the absence of oxygen, bis-anthracenes of formula or of formula where R is an alkylene group having 2 to 10 carbon atoms and n is 1 or 2. The polymers depolymerize on exposure to heat or to radiation at 254 nm. and a support coated with a layer of the polymer may be exposed image-wise in this way to produce a fluorescence pattern corresponding to the image-wise exposure. In examples polymers are obtained from the bis-(9- anthrylmethyl)-esters of pimelic, adipic and succinic acids and from the decamethylene and hexamethylene diesters of 9-anthroic acid.
Patent GB-511412-A (GB)
Title: Method and apparatus for facilitating reference to manuscript by speakers
IPC: A47B19/10
Filed: 1939-03-07
Abstract: 511,412. Viewing-apparatus. FORNET, A. March 7, 1939, No. 7403. [Class 97 (i)] An apparatus which facilitates reference to manuscript by a speaker comprises an approximately vertical reflector, placed between the speaker and his audience, in which he sees an upright, virtual, and advantageously magnified image of the manuscript. As shown, the casing of the speaker's desk 1 carries a reflector 2 held adjustably by a holder 3 having, for example, a ball joint 4. The manuscript 5, in reverse writing, is mounted on rollers 6, 7, carried on a frame 13 and is illuminated by a trough lamp 8. The roller 6 projects above the desk top 9 'for ease of manipulation by the speaker. A further operating roller 11 is provided, both rollers 6, 11 being coupled to the lower roller 7 by rubber cords 10, 12, respectively. In a inodification an auxiliary reversing reflector is provided and normally written manuscript is employed.
Patent GB-676010-A (GB)
Title: Improvements relating to frame synchronising signal separators for television apparatus
Inventor: BULL ERIC WILLIAM
IPC: H04N5/10
Filed: 1949-03-19
Abstract: 676,010. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 6, 1950 [March 19, 1949], No. 7512/49. Class 40 (iii). [Also in Group XL (c)] A pulse width discriminating circuit for separating frame pulses of long duration from the combined line and frame synchronizing pulses in a television system employing interlaced scanning, comprises an integrating circuit whose decay time constant is such that the output voltage falls to a datum level even in the shortest interval between a line synchronizing pulse and the commencement of a frame synchronizing signal and a peak rectifying circuit connected in shunt with the output of the integrating circuit the discharging time constant of which is sufficiently long that the change of potential at its output during an interval between successive frame pulses is less than at the output of the integrating circuit. Fig. 2 shows a synchronizing signal separating circuit in which the combined line and frame synchronizing signals Fig. 1 (a) are applied to a normally non-conductive valve 11 to produce a signal Fig. 1 (b) across capacitor 15 of the integrating circuit 14, 15 in its anode circuit. To prevent the presence of the peaks 5, 6 producing a failure in interlace the signal of Fig. 1 (b) is applied to a biased peak rectifier circuit 17, 18, 19, 20 so that capacitor 18 charges via rectifier 17 during the negativegoing portions of the integrated frame synchronizing signals but discharges only very slowly via resistor 19 during the positive-going portions of the signal of Fig. 1 (b) when rectifier 17 is non-conducting the amplitude of the integrated line synchronizing signals being insufficient to cause the rectifier to conduct. A wave-form, Fig. 1 (c) is produced across resistor 19 which may be further smoothed by another integrating circuit 22, 23 to produce a wave-form Fig. 1 (d) which is applied to synchronize the frame time base 24. Specification 455,375 is referred to.
Patent GB-428642-A (GB)
Title: Improvements in and relating to indicating devices for use with tuning devices of wireless apparatus
IPC: H03J1/04
Filed: 1934-03-09
Abstract: 428,642. Adjusting wireless apparatus. WATTS, C., 32, Gourock Road, Eltham, London. March 9, 1934, No. 7522. [Class 37] A tuning-indicator for a wireless receiver or like apparatus comprises a translucent drum or cylinder adapted to be illuminated from within and provided with a helical line or helically arranged list of station names or values arranged behind a stationary scale provided with an elongated slit or window, the drum being rotated simultaneously with the tuning device so that the line &c. is displaced along the slit or window, the position of the line with respect to the scale indicating the angular position of the tuning device. In the construction shown in Fig. 1, the drum c carries a helical line H on either side of which are printed the names of stations, the longwave station names being printed on one side and the medium wave names on the other side. The names may be printed in different colours, and the drum may be illuminated by lamps of corresponding colours, according to whether the long or medium wave stations are required. The scale a is divided longitudinally by a slit a<1> through which the line H and names of stations are visible, the upper part of the scale being graduated in medium wavelengths and the lower part in long wavelengths. The drum c is connected to the spindle f of the tuning device g through gearing e. In a modified construction, Figs. 3 and 5, the drum l is arranged to make several rotations for each complete movement of the tuning device m, to which the spindle l<1> carrying the drum is connected by reduction gearing m<1>. The spindle l<1> also carries an inner drum l<3> formed with a helical groove l<4>, which engages a pin carried by a lamp box n slidably mounted on rods r, which may also serve to conduct current to the lamp or lamps. The names of broadcasting stations are printed in helical formation on the drum l, and are visible through a slit or window in the scale q. In any position of the drum, the names of three stations are visible through the window, but the lamp box n is provided with light spot openings travelling with the box, so that only one name, corresponding to the station being tuned in, is illuminated. The box n may carry two lamps of different colours for use with the long and medium waves respectively. Tuning is effected by rotating the spindle l<1>, which may be effected through reduction gearing s, from a knob s<1>.
Patent GB-740828-A (GB)
Title: Improvements in or relating to the production of rutile-containing composite pigments
IPC: C09C1/00
Filed: 1953-03-18
Abstract: Rutile/alkaline earth metal sulphate composite pigments are prepared by providing an alkaline earth metal sulphate slurry and a titanium sulphate solution in relative amounts such as will produce the required pigment composition, initially boiling 5 to 50 per cent of the titanium sulphate solution with the alkaline earth metal sulphate slurry thereby precipitating the titanium values, adding the remaining portion of the titanium sulphate solution and boiling the whole to completely precipitate the titanium values, filtering and washing the precipitate and finally calcining it at 900-100 DEG C to convert the titanium values to rutile in the composite pigment.  The preferred extender is calcium sulphate which may be prepared by reacting an oxidic alkaline earth metal compound with sulphuric acid. The slurry thereof preperably contains 20-35 per cent solids and not less than 50 grams per litre of sulphuric acid.  Barium sulphate may also be employed and the final composition may contain 30 per cent by weight of titanic and 70 per cent alkaline earth metal sulphate. The titanium sulphate solution, prepared for example from titaniferous iron ores may be such that the H2SO4 : TiO2 ratio corresponds to the formula TiOSO4 but it is preferably less; solutions containing 13 per cent TiO2 are particularly suitable.  It is preferred that 25-50 per cent of the sulphate solution should be added in the first stage. Before the initial boiling stage it is preferable that the total amount of sulphuric acid present in the mixture of the portion of the titanium sulphate solution and the alkaline earth metal sulphate slurry is adjusted to 2.5 to 5 parts by weight of sulphuric acid per part of titanium dioxide present.  According to a typical example, a titanium sulphate solution having a basicity of 17.3 and a H2SO4 to TiO2 ratio of 2.05 was prepared by treating titaniferous slag with sulphuric acid.  An anhydrite slurry containing 34.4 per cent solids and 5.4 per cent sulphuric acid was prepared by reacting lime with sulphuric acid, the relative amounts of solution and slurry being such as to produce a 30 per cent TiO2 content in the final pigment. One third of the solution was added to the slurry and the sulphuric acid content adjusted to 3.75 parts per part of TiO2 present. The mixture was boiled to precipitate titania and the rmainder of the solution added over a period of 2 hours whilst the mixture was maintained at boiling temperature.  The final mixture was then boiled for an additional hour.  The mixed precipitate of titanium hydrate and calcium sulphate was filtered, worked, bleached at 80 DEG C in 5 per cent sulphuric acid containing a small amount of trivalent titanium, then calcined at 975 DEG C for 2 hours.  100 per cent convertion to rutile was obtained.
Patent GB-206468-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B61/04
Filed: 1923-03-13
Abstract: 206,468. Edde, F. H. Oct. 31, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Compression engines.-Two parallel crankshafts are geared together to rotate in the same direction, the cranks being similarly arranged on the two shafts, the cranks on the one shaft being parallel to those on the other. To each crank are connected the pistons of two coaxial cylinders one on each side of the shafts.
Patent GB-145830-A (GB)
Title: Improvements in and in the manufacture of heel-pads and other articles formed mainlyof india-rubber
IPC: A43B21/06
Filed: 1919-03-26
Abstract: 145,830. Russell, R. March 26, 1919. No Patent granted (Sealing fee not paid). Protectors, construction of.-India-rubber substances adapted to be secured to a backing by nails and the like are provided with a compact relatively thin layer of hard material composed of loose non-woven fibrous material embedded in and vulcanized to a layer of rubber. The hard fibrous substance will hold nails and the like. The invention is particularly applicable to heel pads for boots and rubber pump valves. Reference has been directed by the Comptroller to Specifications 4202/77 and 2348/81, [both in Class 135, Valves &c.], and 18007/08, [Class 140, Waterproof fabrics].
Patent GB-750795-A (GB)
Title: Improvements relating to the setting of axminster spools
IPC: D03D39/06
Filed: 1953-03-20
Abstract: 750,795. Setting Axminster tuft-yarn spools. ROBINSON, P. W. Dec. 7, 1953 [March 20, 1953], No. 7696/53. Classes 142 (1) and 142 (2). A section of the tuft-yarns to be wound subsequently on a spool are selected by jacquard controlled means and wound on a storage bobbin, and a number of these bobbins then arranged coaxially in the correct sequence and the yarns wound on to the tuft-yarn spool. The yarns 18a-18f (Fig. 3) pass through apertures in jacquard controlled strips 17 and are engaged by grippers 21 sliding on guides 34 and moved by a linkage 81-86 actuated by a cam groove 80. A disc 103 operated by a nose 95 on a cam 79 and by a linkage 96-99 closes the grippers by striking a lever 29. A lever 31 is provided for hand operation of the grippers. The grippers draw the selected yarns 33 from the strips 17 across a storage bobbin 35 rotated by a motor 47. The yarns are attached to the bobbin by a clamping bar. A cutter 113 cuts the yarns after winding. A reed 69 is mounted in a carrier 70 on a bar 71 sliding in guides 72. A cam groove 90 and a linkage 92-94: lowers the reed when the grippers advance and raises the reed when the grippers return and draw the yarns across the bobbin 35. A comb 73 is also mounted on the carrier and is removed with, and attached to, the bobbin when the bobbin is fully wound. In another embodiment, the yarns are wound one section at a time on one beam which is displaced axially to bring each section beneath the extended yarns in succession; alternatively, a number of bobbins 35 may be arranged end to end to form a single beam and are axially displaced. When one beam is used, it may have a frusto-conical bushing at one end so that each section will be supported during winding by the end of the previous section. In a further embodiment, the beam may remain stationary and the grippers are moved to lay the yarns across succeeding sections of the beam. Reeds.-When rewinding the yarns from the bobbins 35 to the spool, the yarns pass through a reed (Fig. 7) comprising groups 108 of teeth 111 movable to an extent permitted by a pin- and-slot connection 110. If the number of strips 17 holding the yarns is doubled, a reed 53 (Fig. 8) is provided and comprises teeth 54 extending from laterally slidable bases 55, links 56 limiting the lateral movement. When the selected yarns have been drawn through the reed 53, the reed is contracted to bring the yarns from their former " double spacing " to " single spacing." Jacquards.-The slides 17 are connected by wires 57 to lifter members 58 engaged by a raising bar 59. Card-operated needles 63 displace U-shaped stirrups 61a-61e on the members 58 so that the stirrups engage a stop-bar 62 when the bars 58 move downwardly. A member 68 returns the stirrups to their original positions.
Patent GB-507110-A (GB)
Title: Improvements in or relating to liquid pressure remote control systems
IPC: B63H25/28
Filed: 1938-03-12
Abstract: 507,110. Hydraulic transmission of power ; servomotors. AUTOMOTIVE PRODUCTS CO., Ltd., and CLENCH, E. C. S. March 12, 1938, No. 7787. [Classes 69 (ii) and 135] In a liquid pressure remote-control system, a valve controlling the flow of working liquid from a pressure source to a double-acting slave unit is actuated through the medium of a liquid pressure pilot system comprising a manually operable reversible flow transmitter pump, a a slave device fed therefrom to actuate the control valve, and an auxiliary cylinder and piston unit which is coupled mechanically with the double-acting slave unit and is connected in circuit with both the transmitter pump and the slave device so that, as the double-acting slave unit moves to a position corresponding with the prevailing position of the transmitter pump, the control valve assumes its " off " position, the control valve being arranged with means whereby the pressure of the liquid actuating the double-acting slave unit creates pressure in the pipe lines of the transmitter pump, thereby causing the operating resistance of the latter to vary in accordance with the pressure of the liquid fed to the slave unit from the pressure source. A motor driven pump or other convenient continuous source A actuates the slave device C operating the tiller 11 of a ship, under the control of a valve B ; the latter is actuated by a transmitter pump E, movement of the tiller operating an auxiliary slave D connected in with the pump E and the working spaces 29, 30 for operating the valve. In the inoperative position of the valve member 13, collars 14, 15 thereon close off the lines 16, 17 leading to the slave C; the pump delivery passes through holes 18 in the valve member to the interior thereof and through an axial bore 19 therein, and by lines 20, 21 to the pump suction ; pistons 23, 24 actuated by the pressure in the working spaces 29, 30 which they define, have conical or frusto-conical portions 25, 26 adapted to close the ends of the bore 19 when the valve is actuated by means of the transmitter pump E. Connections 59, 61 provided with valves 60, 62 respectively enable the pump E to be used as a stand-by transmitter in the event of breakdown of the main transmitter A. Relief valves 64, 65 are connected across the lines 16, 17 ; a hydraulic lock G is provided.
Patent GB-1213872-A (GB)
Title: Improvements in machines for filling beer kegs and like containers
Inventor: RUDDICK MAURICE
IPC: B65B31/10
Filed: 1968-02-16
Abstract: 1,213,872. Filling kegs. BURNETT & ROLF Ltd. 28 Jan., 1969 [16 Feb., 1968], No. 7793/68. Heading B8T. Beer kegs and similar containers to be filled are carried inverted, by chain conveyer 23, to a filling machine. Simultaneously, a ram 11 is retracted and a ram 14 extended. The ram 11 is then extended, but the filling head 16 still retains its uppermost position relative to the supporting platform 18 by maintaining the force on ram 14. This motion engages head 16 with neck 4 and lifts the keg from the conveyer 23. Further extension of ram 11 brings a skirt 6 into contact with an abutment plate 22 which is held in position by a ram 19. The thrust thus applied, together with the weight of keg 1, causes the head 16 to be pushed back against ram 14 and brings skirt 5 into engagement with the supporting platform 18. Keg 1 is thus clamped between platform 18 and abutment plate 22. In this position, beer or other liquid is supplied through the head 16 around the outside of self-closing valve 7, against a carbon dioxide back pressure. As the filling occurs, the gas is drawn off through spear 8 and a duct in head 16. The weight of the keg and the beer is transferred through the skirt 5 to supporting platform 18. When the filling is complete, valve 7 is closed and ram 11 is retracted, thus transferring the filled keg back on to conveyer 23. Platform 18 moves away from skirt 5, eventually reaching its lowest position relative to head 16. At this stage, head 16 disengages from neck 4. Conveyer 23 removes keg 1 from the machine. Because abutment plate 22 is vertically movable, it allows the machine to accommodate kegs of various sizes.
Patent GB-747403-A (GB)
Title: Means for automatically controlling variable speed power transmission mechanisms on road vehicles
Inventor: DEAN JOHN ROBERT
IPC: F16H61/02
Filed: 1953-03-23
Abstract: 747,403. Change-speed gearing. LUCAS (INDUSTRIES), Ltd., J. June 16, 1954 [March 23, 1953], No. 7891/53. Class 80(2) In a motor-vehicle transmission system, an overdrive gear c behind the main gear box b is operated, automatically by a solenoid e controlled by a spring-loaded centrifugal switch k responsive to road speed, the speed at which the switch becomes effective to produce overdrive being variable both by the accelerator wand by the movement of the gear lever between its two top gear positions. The switch k completes a circuit through a relay coil g to close a switch f, with a hold-on switch i, for the solenoid e, the circuit also including a switch x which is closed whenever the gear lever is in either of its two gear positions. In Fig. 1, the loading spring m of the switch k is controlled through linkage p, q connected to one end of a lever r, the other end of which is connected to the accelerator w and which is pivoted between its ends on a lever s connected at v to the gear lever. In Fig. 2, the loading spring m is controlled solely by the accelerator w and the double switch k closes in succession two contacts j<SP>1</SP>, j, one or other of which is rendered effective by a two-way selector switch 3 connected to the gear lever.
Patent GB-254005-A (GB)
Title: Improvements in and relating to magneto generators
IPC: H02K16/00
Filed: 1925-03-25
Abstract: 254,005. British Thomson-Houston Co., Ltd., Griffiths, L., and Woodfield, T. March 25, 1925. Magneto-electric machines; machines with two armatures.-In a machine comprising a combined generator 3 and magneto 2, the shafts of the two units are inclined to each other and are connected together through bevel gearing 6, 7. In the form shown, the two units are housed in a single casting 1. The bevel' wheel 6 may be adjusted by inserting washers between the casting 1 and a flange 9 on the generator.. A single set of permanent magnets supplies the magnetic flux for both units, as described in Specification 223,760. In a modification, the two units are housed in separate casings and have independent magnetic circuits; the bevel wheel 6 may be adjusted as described above, and also by the insertion of shims between the two casings.
Patent GB-439874-A (GB)
Title: Parasiticidal compositions and preparations
IPC: A01N25/08
Filed: 1934-03-14
Abstract: Exfoliated vermiculite, prepared from vermiculite (a complex hydrated magnesium-aluminium-iron silicate) by heating and disintegrating is employed as a dispensing agent for active fungicides or insecticides to be used as solutions or dispersions in water or other liquid.ALSO:Exfoliated vermiculite, prepared from vermiculite (a complex hydrated magnesium-aluminium-iron silicate) by heating and disintegrating, is employed as an inert carrier for active insecticides or fungicides to be used as dusting agents or to be dissolved or dispersed in aqueous or other liquid media for seed dressing or treatment of plants.  Active substances specified are iodine, formaldehyde, nicotine, cuprous cyanide, thiazoles, arsenates of calcium, manganese and lead, and fluorine compounds such as cryolite, sodium fluoride, and sodium or barium fluosilicates. Reference is also made to an insecticide consisting of a mixture of celite with barium fluosilicate.
Patent GB-815080-A (GB)
Title: Improved motor vehicle having power steering apparatus and control system therefor
IPC: B62D37/00
Filed: 1957-03-12
Abstract: 815,080. Vehicle power steering. GENERAL MOTORS CORPORATION. March 12, 1957 [April 13, 1956], No. 8088/57. Addition to 814,496. Class 79(5) In a motor vehicle with servo-assisted power steering having the action of a control valve 80, Fig. la modulated by a motion-senser such as an accelermeter 100, Fig. lb according to the parent Specification the control valve 80 is subjected to fluid pressure from a manual control valve 26, Fig. 1, and from valves 122, 122<SP>1</SP> controlled by the accelerometer. The valve 80 is supplied with pressure fluid through a central inlet pipe 82 and controls the fluid pressure in pipes 74, 78 leading to opposite ends of the servo-motor cylinder 72 of the steering mechanism 60. Initial movement of the valve spool 86 is caused by manual movement of the steering column 12 which applies torque to the steering mechanism 60 and moves a spool 24 in a steering control valve 26 which supplies pressure fluid through pipes 88, 90 to pistons 92, 94 engaging opposite ends of the spool 86. Feedback pressure providing steering fuel is obtained in the valve 26 through channels 29, 31 leading to opposed ends of the spool 24 and a similar resistance to displacement of the spool 86 is provided by a second pair of opposed pistons 96, 96<SP>1</SP> connected to the pipes 74, 78. Movement of the spool 86 is further modified by a third p a i r of opposed pistons 98, 98<SP>1</SP> connected through pipes 99, 99<SP>1</SP> to valves 122, 122<SP>1</SP> in the body of the accelerometer 100 and actuated by movements of the pendulum 102 mounted within the body. The pendulum 102 is damped by fluid in a chamber 103 and has rounded cam faces 108 engaging a pair of opposed plungers 110, 112 slidable in ported casings against the action of return springs 110, 112 and connecting the outlet pipes 99, 99<SP>1</SP> to the pressure inlet line 82 or to exhaust. Reduced diameter extensions 120, 120<SP>1</SP> on the plungers 110, 112 influenced by pressures in the supply lines 99, 99<SP>1</SP> tend to re-centre the pendulum 102. In operation, when the vehicle is steered at low speed there is maximum servoassistance but movement of the spool 86 is resisted during fast turns. During skidding the action of the accelerometer tends to right the vehicle automatically.