baber/WOPTO huggingface dataset:
Patent GB-356971-A (GB)
Title: Improved process of and device for obtaining impression of relief particularly in kinematographic projections and the like
IPC: G03B21/60
Filed: 1930-10-17
Abstract: 356,971. Optical-projection apparatus. DARIMONT, L., 266, Rue Adolphe Willemyns, Brussels. Oct. 17, 1930, No. 31169. [Class 97 (i).] Images are projected on to a screen of frosted glass or the like associated with two separate flat mirrors, and an opaque screen is placed between the cone of light from the projector and the rays proceeding from the second mirror. The projection screen 2 may be between the projector 1 and the first mirror 3, or may be between the two mirrors 3, 4. The opaque screen 5 is placed between the rays from the projector 1 and the rays proceeding to the spectator 6.
Patent GB-1142262-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: G03G17/04
Filed: 1966-07-12
Abstract: 1,142,262. Photo-resistors; cathode ray tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 July, 1966 [15 July, 1965], No. 31174/66. Headings H1D and H1K. A cathode ray imaging tube comprises a bombardment induced conductivity target 37 consisting of a lead monoxide layer with a major portion of intrinsic conductivity, an N-type region in contact with a conducting electrode and a P-type region on the opposite free surface. The free surface is scanned by an electron beam from gun 38 and a photo cathode 33 bombards the other side of the target with electrons to provide a charge image on the scanned target plates. The conducting electrode for the target may consist of an aluminium layer on a membrane of aluminium oxide. In place of the photocathode, an electron microscope or electron diffraction apparatus may be used or the beam may be intensity modulated so that the device forms a memory tube. Reference is made to Specification 1,070,621 regarding provision of the lead monoxide intrinsic layer by vapour deposition or treatment in an oxygen atmosphere containing water vapour. P-type conductivitity may be obtained by doping with thallium or silver or gas discharge bombardment with oxygen. N-type conductivity may be obtained by providing excess lead, or using aluminium or conductive tin oxide as the electrode.
Patent GB-1472020-A (GB)
Title: Electrostatic printing head
IPC: G03G15/05
Filed: 1975-07-25
Abstract: 1472020 Selective printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 July 1975 [30 July 1974] 31184/75 Heading B6F Electrostatic print head comprises two insulating plates 3, 4 each carrying conductor tracks or one of their faces, the end of the tracks acting as masking electrodes 31, 41. The plates 3, 4 are joined by an insulating layer 5 with the electrodes 31, 41 staggered. The plates 3, 4 and tracks 31, 41 may be encased in filler 32, 42 and located in a housing 6. The rows of electrodes can be operated simultaneously to produce characters of low definition. Improved definition can be achieved by operating the rows successively. The best definition is achieved by operating the electrodes 41 alone inititially then operating the two rows simultaneously and finally operating the electrodes 31 alone. In this method of operation the recording paper is stepped incrementally by a distance a in an upward direction as viewed in Fig. 2.
Patent GB-286388-A (GB)
Title: Means for indicating the level and temperature and maintaining the level of the liquid in the radiators of internal combustion motors
IPC: G01F23/58
Filed: 1926-12-10
Abstract: 286,388. Rose, R. H. Dec. 10, 1926. Levels, regulating; indicators actuated by floats.-The radiator of an internal - combustion engine is provided with means for indicating the level and temperature, and also for maintaining the level. The filler cap 2 of the radiator 1 carries an overflow pipe 4, the upper end of which is visible through windows 10 supported in a frame 3, while the space within the indicator casing communicates with the radiator through an annular passage 7. The pipe 4 discharges into an overflow tank when the water expands in the radiator on becoming heated, and the overflow is drawn back on contraction of the water in the radiator to maintain the level. In a modification, Fig. 6, a glass dome 16 is employed, and a thermometer 17 is clipped to the pipe 4 so that the temperature of the water is indicated. In another modification (Fig. 7, not shown) the overflow tank may form part of the radiator, and is connected to the main body by a transparent U-tube. If the overflow tank is omitted, the water may expand into an upwardly projecting transparent tube, which thus indicates level and temperature. The overflow tank may Le provided with means for preventing disturbance if the water boils in the radiator. In another modification, Fig. 9, the top of the overflow pipe may be within the filling cap and not visible, while the level is indicated by a float 35 having a rod 36 carrying an index plate 37 which is visible through an opening 10<a> in the side of the casing 3. The level indicator may be combined with or replaced by a temperature indicator. The overflow tank may be connected to the exhaust pipe of the engine so that the suction in the radiator when cooling is assisted by a positive pressure on the water in the tank.
Patent GB-160258-A (GB)
Title: Improvements in or relating to the condensation of phenolic bodies with aldehydic compounds
IPC: C08G8/28
Filed: 1919-12-15
Abstract: In the condensation of phenolic bodies with aldehydic compounds, the catalyst employed is a salt or double compound of hexamethylenetetramine, or mixtures of these, employed in such proportions that the quantity of hexamethylenetetramine contained therein does not exceed two per cent by weight of the reacting ingredients.  Examples of the salts of hexamethylenetetramine are the chloride, sulphate, acetate, tartrate, citrate, benzene sulphonate, toluene-p-sulphonate, camphorate, arsenate, trimetaborate, salicylate, sulphosalicylate, phthalate, perchlorate, chromate, sulphocyanide, and tannate.  Eaxmples of the double compounds are those with phenolic bodies, such as phenol, resorcinol, pyrogallol, and guaiacol; or with halogenated compounds such as ethyl bromide, chloral, bromine iodide, ethyl iodide, and iodoform; or with metallic salts, such as aluminium acetate, potassium antimony tartrate, sodium acetate, ferric chloride, and mercuric chloride.  According to the Provisional Specifications, hexamethylenetetramine itself may be employed as the catalyst.  Hexamethylenetetramine salts.-The acetate, benzene sulphonate, and toluene-p-sulphonate of hexamethylenetetramine are prepared by evaporating aqueous solutions of the base and the respective acids, preferably in vacuo, and purifying the products by crystallization from alcohol.
Patent GB-537820-A (GB)
Title: Improvements in safety control devices for combing machines
IPC: D01G19/04
Filed: 1939-12-04
Abstract: 537,820. Machinery guards. CHADWICK, A. R. Dec. 4, 1939, No. 31393. [Class 80 (iv)] Safety control devices for combing machines for the treatment of fibrous material, require the use of both hands of the operator to start from the front end or the gearing end of the machine, but the machine may be started from the coiler end by one hand, thus leaving the other hand free to piece-up the sliver in the usual way. A setting-on rod 10 slidable in guides 12a ... 12d is connected to the belt shifter 11 and carries a block 15 adapted to be held. when the machine is stopped, by a safety catch 16 pivoted to the table 13 of the machine. Parallel with the rod 10 is a locking-motion rod 14 an extension 19 of which has a cam slot 18 with which engages a finger 17 on the catch 16. The rods 10, 14 are provided with handles 21, 22 respectively. To start the machine from the gearing end, the handle 21 is first pushed to free the catch 16, after which the handle 22 is pushed to move the rod 10 and place the belt on the fast pulley 33. A weight 23 attached to a cord 24 passing over a pulley 25 returns the rod 14 when the machine is stopped. To permit the safety device to be operated by one hand from the coiler end, a pin 31 on the rod 10 engages with lost motion a slot 30 in a sleeve 26 provided with a handle 27. The sleeve has a projecting part 28 adapted to engage a collar 29 on the rod 14. The first part of the movement of the sleeve moves the rod 14 and releases the catch 16 after which the rod 10 is moved. When the machine is in motion, the usual cover over the gearing is locked by an element 11<1> secured to the belt shifter. The weight 23 may be replaced by a spring. The locking-motion rod 14 is retained in position during working of the machine by a catch 34, Figs. 1, 4, mounted on the comber table and engaging by one end 34' a shoulder 35<1> on a block 35 on the rod'14 the other end 34<11> being adapted to be engaged by a sleeve 36 on the rod 10. The setting-on rod 10 is restored to "off" position by a spring 37 which is attached to a collar 38 on a rod 39 which collar also engages a collar 40 on the rod 10 whereby the spring is charged when rod 10 is moved to start the machine. A catch 41 carried on a bracket 42 on the rod 10 engaged in a notch 39<1> in the rod 39 is tripped by contact of the knocking-off motion lever 43 to release the rod 39.
Patent GB-1388957-A (GB)
Title: Process and apparatus for use in manufacturing sheet glass
IPC: C03B15/02
Filed: 1972-07-05
Abstract: 1388957 Drawing sheet glass GLAVERBEL 5 July 1972 [20 Aug 1971 (2)] 31483/72 Heading C1M In a process of manufacturing sheet glass by upward drawing through a drawing chamber, gas displacing forces are exerted in the drawing chamber to cause gas circulation therein. The gas displacing forces may be provided by ejectors which eject preheated gas into the drawing chamber. In one arrangement (Figs. 1 and 2), an ejector 25 is mounted on one side of the ribbon adjacent the edge thereof while a second ejector 26 is mounted opposite the ejector 25 but downwardly displaced therefrom. In a second arrangement (Figs. 3 and 4), two pairs of vertically spaced ejectors 48, 50 are mounted adjacent one edge of the ribbon 27 on one side thereof while a second pair of ejectors 47, 49 is mounted adjacent the other ribbon edge directly opposite the first pair. The upper two ejectors 47, 48 point in one direction while the lower two ejectors 49, 50 point in the other direction across the ribbon 27. In a third arrangement (Figs. 6 and 7), a series of ejectors 81, 83, 85, 87 is provided adjacent one edge of the ribbon and a corresponding series of ejectors 82, 84, 86 provided adjacent the other ribbon edge directly opposite the first series. A control device 89 operates so that gas is ejected from diagonally opposite pairs of ejectors, e.g. 82, 83, while adjacent ejectors 81, 84 are inoperative and vice versa. In a further arrangement (Fig. 5), two opposite pairs of vertically spaced ejectors 48, 50 and 47, 49 are provided inclined to the horizontal and are operated in a similar fashion to the ejectors illustrated in Fig. 7. The gas displacing forces may also be provided by mechanical means, e.g. propellers. The drawing chamber may be associated with a vertical annealing shaft 10 (Fig. 1), or a horizontal annealing shaft 76 (Fig. 6), in which case a bending roller 74 is utilized. The drawing chamber is provided with a pair of main coolers 20, 21 and a pair of secondary coolers 23, 24. The gas displacing devices may be arranged so that one such device is adjacent each cooler. The molten glass may be conveyed to the drawing chamber on a body of molten material. Specifications 1,388,956 and 1,388,958 are referred to.
Patent GB-534915-A (GB)
Title: Map making and apparatus therefor
IPC: G01C11/00
Filed: 1939-12-05
Abstract: 534,915. Optical apparatus. SEELY, H. E. Dec. 5, 1939, No. 31554. Convention date, Dec. 5, 1938. [Class 97 (i)] A device for use in the preparation of maps of a desired scale from maps, photographs &c. of a different scale, comprises a dual eye piece whereby the map under preparation is viewed with one eye, and the original map is viewed with the other eye in such manner that the detail of the latter is apparently superposed to scale on the former, movable means, independent of the eyepiece, being provided for varying the relative distances of the maps &c. from the eyes. As shown, a bar 1 carries a dual eyepiece 6 and mirrors 11, 15 enabling the two maps &c. 4, 5 to be viewed simultaneously. The members of the eyepiece may be relatively adjustable, may be jointly adjustable on the bar by rack and pinion 8, and may comprise lenses. The reflectors 15 are universally mounted on arms 17 carried by sleeves 16 slidable on the bar, and the bar is supported by legs 2. The eyepieces may consist of telescopes of unit magnification each comprising a prism replacing the mirror 11 and containing a graticule or the like to facilitate superposition of the images.
Patent GB-640958-A (GB)
Title: Improvements in or relating to control systems for gas-turbine power-plants
Inventor: HAWORTH LIONEL
IPC: F02C7/22
Filed: 1947-11-28
Abstract: ,640,958. Gas turbine plant. ROLLS-ROYCE, Ltd. Nov. 28, 1947, No. 31590. [Class 110(iii)] [Also in Groups XXIX and XXXIII] A gas turbine plant having a power output shaft on which the torque loading may be varied is controlled by temperature responsive means located in the gas flow 'through the turbine system which varies the torque loading on the output shaft and by a constant speed governor, driven by a rotor in the plant which varies the fuel supply. The temperature responsive means maintains the gas flow temperature at a selected value by increasing the torque loading on decrease of the gas-flow temperature and vice versa. In the plant shown, Fig. 1, the fuel supply to the burners 13 is controlled by a throttle valve 25 which is operated by the piston of a servomotor 29 the movements, of which are determined by a centrifugal governor 30 driven from the engine shaft 16 through the gearing 21. The governor 30 is loaded by a spring 31 which has an abutment 32 the position of which can be varied by a control arm 33 through a rack and pinion mechanism. The arrangement is such that the fuel flow is controlled so as to maintain the speed of the rotor at the value pre-set by the control arm 33. The variable pitch airscrew 17 driven through a reduction gear from the engine shaft 16' is controlled by a resistance thermometer 41 through a hydraulic servo-mechanism 19 and piston valve 38. The resistance thermometer is mounted in the exhaust unit 20 and is connected to an A.C. bridge circuit 42 such as an Owen's bridge as shown in Fig. 2. The bridge comprises in the same arm as the resistance thermometer 41 a variable inductance 43, by which the balanced condition of the bridge circuit can be adjusted. Variation of the temperature in the exhaust unit 20 will alter the balanced condition of the bridge and the output from the bridge after passing through a phase discriminating and amplifying device 46 is arranged to control the direction of rotation of the motor 40 which operates the piston valve 38. The arrangement is such that when the temperature of the exhaust gases rises above the datum value, the valve 38 is moved to cause a decrease of pitch of the airscrew blades 17 and vice versa. The variable inductance 43 is controlled by the arm 45. The control arms 33 and 45 are connected together and to a main control member so that for each load there is a pre-selected temperature. Modifications in which the temperature responsive means is a quartz rod or thermo-couple and the speed responsive means a fluid centrifugal device driven by the engine rotor are also described. The variable pitch screw described is suitable for aircraft or marine propulsion but for land vehicle use a variable speed transmission mechanism or torque converter is described. Where the power plant drives an external load through a fixed gear ratio, it is necessary to vary the load to vary the torque.
Patent GB-162333-A (GB)
Title: Improvements in mine signalling apparatus
IPC: B66B19/06
Filed: 1919-12-17
Abstract: 162,333. Clifford, A., and Clifford, A. L. Dec. 17, 1919. Mine signalling systems.-Relates to apparatus of the step-by-step ratchet type in which the transmitting-switch has a compound movement, one part for re-setting the indicator and the other for sending the signal impulses, and comprises a construction of transmitting switch in which the operating-handle P is pivoted on the end of a spindle T and adapted during its movement from horizontal to vertical position to bring an arm T<1> into engagement with a member S<2> and thereby to clcse a switch S, S<1> for energizing the resetting- magnet at the indicator. When in vertical position, the handle P is pressed inwards to send the signal impulses, closing a switch Q by means of a lug P' engaging a plunger Q<2>. When the handle is released, it is returned to the horizontal position by a coiled spring P<2>, and during the return movement the arm T' lifts the member S<2> idly without closing the contacts S, S<1>.
Patent GB-1343339-A (GB)
Title: Radiation collimators
IPC: G21K1/02
Filed: 1971-07-06
Abstract: 1343339 Making collimators NUCLEAR CHICAGO CORP 6 July 1971 [7 July 1970] 31657/71 Heading B3A [Also in Divisions H5 and G1] A radiation collimator of lead foil is constructed from straight strips and corrugated strips of the foil, by placing them alternately in the work-holder 30, Fig. 3, the straight strips being coated on each side with a resin adhesive. Thereafter, an aluminium plate 11 is bonded to each end of the resulting honeycomb structure, from which a circular portion 10, Fig. 5, is sawn for use as a collimator in a gamma-ray camera (see Division H5).
Patent GB-189450-A (GB)
Title: A process for the production of inactive menthol
IPC: C07C35/12
Filed: 1922-11-20
Abstract: By hydrogenizing thymol under pressure of about 5-30 atmospheres in the presence of a catalyst such as nickel, cobalt, platinum, or palladium, a mixture of menthol and isomenthol is obtained, from which the menthol separates on cooling.  The isomenthol remaining is dehydrogenized into menthone by the aid of a catalyst such as copper oxide or nickel oxide, and the menthone, alone or in admixture with thymol, is then hydrogenized under pressure to produce more menthol. The menthol obtained by the process has the properties of natural inactive menthol. According to the example, thymol is heated in an autoclave with hydrogen and nickel, the catalyst then removed, and the menthol isolated by cooling and centrifuging; the liquid isomenthol remaining is next heated with copper oxide to which an alkali has preferably been added, and the resulting menthone finally treated-either alone or mixed with thymol-with hydrogen in the presence of a nickel catalyst, the product being dealt with as before.ALSO:By hydrogenizing thymol under pressure in the presence of a catalyst such as nickel, cobalt, platinum or palladium, a mixture of menthol and isomenthol is obtained, from which the menthol separates on cooling.  The isomenthol remaining is dehydrogenized into menthone by the aid of a catalyst such as copper oxide or nickel oxide, and the menthone, alone or in admixture with thymol, is then hydrogenized under pressure to produce more menthol.  The menthol obtained by the process has the properties of natural inactive menthol.  According to the example, thymol is heated in an autoclave with hydrogen and nickel, the catalyst then removed, and the menthol isolated by cooling and centrifuging; the liquid isomenthol remaining is next heated with copper oxide to which an alkali has preferably been added, and the resulting menthone finally treated-either alone or mixed with thymol-with hydrogen in the presence of a nickel catalyst, the product being dealt with as before.
Patent GB-1152874-A (GB)
Title: Improvements in or relating to Brakes and Braking Installaions
IPC: B60T13/14
Filed: 1966-07-14
Abstract: 1,152,874. Disc and drum brakes; hydraulic operation. SOC. ANON. FRANCAISE DU FERODO. 14 July, 1966 [15 July, 1965], No. 31731/66. Headings F2E and F2F. A braking system comprises a disc brake 10 having a pair of brake pads, for gripping the disc 61, mounted on a member 63 having tangential movement, an actuating cylinder 70 for the pads receiving an actuating pressure, the pad carrier member 63 co-operating in one direction with a fixed abutment and in the other direction with a double piston which forms two chambers 68, 69, the primary chamber 69 being connected to the actuating cylinder while the other chamber 68 is connected to a further actuating cylinder 71. The system is described as applied to a motor vehicle having disc brakes 10, 11 on the front wheels and drum-rakes on the rear wheels, a driver's valve 40, fed with fluid under pressure and connected to a triple piston arrangement 46 delivering fluid to the brakes. A device 25, 107, varies the pressure delivered to the rear brakes according to the load on the suspension units. When pedal 41 is depressed the triple piston of unit 46 moves leftwards and chambers 51, 53 expel fluid into lines 74, 75 connected to the cylinders 70 of the disc brakes to apply the pads thereof to the discs. The carrier 63 thus moves leftwards, assisted by pressure admitted through conduit 72 to chamber 69. A high secondary pressure is developed in chamber 68 and fed to cylinders 71 which assist the braking. If the coefficient of friction is higher for brake 10 than for brake 11 the carrier 63 of brake 10 moves further to the left, the intercommunication of the chambers 68 forces the carrier of brake 11 rightwards. Consequent variations of the capacities of chamber 69 produce variations of pressure in the primary circuits 74, 70, 72 and 75, 70, 72 to balance the braking. The load conscious device (Fig. 4) in the rear brake system comprises a roller 121 positioned between levers 117, 119 by a piston and cylinder 124, 107 fed by conduit 104 with fluid at a pressure dependent on the load on the rear of the vehicle. The lower cylinder 110 is supplied with fluid under pressure by a conduit 23 and delivers to a conduit 88 connected with the rear brakes a pressure in accordance with the force on piston 113. This force is dependent upon both the pressure exerted on piston 95 by fluid in a conduit 78 connected to the front wheel cylinders 71 and upon the position of the roller 121.
Patent GB-269450-A (GB)
Title: Improvements in railway track constructions
IPC: E01B3/22
Filed: 1926-12-17
Abstract: 269,450. Spencer, R. L. Dec. 17, 1926. Sleepers, metal ; rails integral with sleepers ; sleepers and parts, arrangements of ; tie-bars.-A longitudinal metal sleeper 1, Fig. 2, has at its inner edge an upturned flange 2 to which the tiebars 10 are secured. The rails 4 are secured to the sleeper by lugs 5 and clips 6 or are integral with the sleeper. The joints in the rails and sleepers are staggered. The sleeper has a downturned flange 3 at its outer edge, and adjacent sleepers are joined by plates 14. The adjustable tie-bars 10 may be replaced by fixed tie-bars 34, Fig. 3, having jaws 35 clamped by screws 36 to the inner flange 32 of the sleeper.
Patent GB-185682-A (GB)
Title: Improvements in or relating to electrical switching or commutating devices
IPC: H02M1/22
Filed: 1921-06-02
Abstract: 185,682. Price, W. A. June 2, 1921. Commutator switching-arrangements.-A switching or commutating device, particularly applicable to the rectifying system described n Specification 172,391, comprises one or more metal blades or sectors S<1>, S<2> adapted to pass between, and make contact with, pairs of flat metal springs pressed obliquely against each other. Each pair of springs may be made from a strip of metal E bent into U-form, with the free ends E' bent towards each other and normally touching as shown in Fig. 3. The contacting parts of the switch may be made of steel or iron, the portions beyond the rubbing surfaces being coated with copper, if desired, in order to give increased conductivity.