baber/WOPTO huggingface dataset:
Patent GB-505250-A (GB)
Title: Improvements relating to advertising or like signs
IPC: F21V11/16
Filed: 1937-11-03
Abstract: 505,250. Lantern screens. CINESCOPE PUBLICITY CO., Ltd., and DICKINS, R. V. Nov. 3, 1937, No. 30172. [Class 75 (iv)] [Also in Group XVIII] In a sign in which a diffusing screen is interposed between the display panel and a light source, the diffusing screen comprising translucent areas in an opaque background, is of dish formation and partially encloses the light source. Figs. 1 and 3 show the application to a box sign in which a plate 12 bearing display matter is illuminated by lamps mounted behind diffusing screens 14 each comprising a perforated member supported by a wire 16 on the lamp support. An additional screen member 20 may be provided on the member 14. To effect more uniform illumination of the plate 12, the apertures in the screen 14 may be graduated so as to increase in size from the centre to the periphery of the screen.
Patent GB-1071614-A (GB)
Title: The manufacture of semi-conductor controlled rectifiers
Inventor: GERLACH WILLI
IPC: H01L29/417
Filed: 1964-07-30
Abstract: 1,071,614. Semi-conductor devices. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. July 30, 1964, No. 30227/64. Heading H1K. A junction of a semi-conductor device is short circuited within the area of an alloyed contact. In a first embodiment, a four layer diode comprises a body of semi-conductor material with two diffused junctions 12, 23. Parts of one of the outer regions 3 are covered by growing a thin layer of oxide or by providing a thin layer of carbon on them. A gold-antimony foil 5 is placed on the surface and the body is heated to alloy foil 5 to layer 3 at the unprotected areas to produce a plurality of emitter regions 4 interconnected by foil 5. The foil 5 also makes contact with region 3 as at 35 to short-circuit the emitter junction to improve the temperature stability of the device. In an alternative embodiment, Fig. 3 (not shown), the foil is alloyed over the whole of its area, cavities are formed in the foil extending completely through the recrystallized region to expose the junction, and the cavities are filled with molten conductive material which short circuits the junction. An SCR, Fig. 3c (not shown), may be produced by arranging the cavities in a ring surrounding a central opening through which a control electrode (7) extends to contact the base layer (3).
Patent GB-527280-A (GB)
Title: Improvements in or relating to sheet feeding apparatus
IPC: B41F21/00
Filed: 1939-03-18
Abstract: 527,280. Feeding sheets. HARRIS-SEYBOLDPOTTER CO. March 18, 1939, No. 30282. Convention date, March 21, 1938. Divided out of 522,722. Drawings to Specification. [Class 100 (i) ] The Specification describes the same sheetfeeding machine as Specification 522,722 but the claims are different.
Patent GB-905049-A (GB)
Title: Improvements in or relating to portable extrusion devices
IPC: F16N3/12
Filed: 1957-09-27
Abstract: 905,049. Syringes. B. B. CHEMICAL CO. Ltd., and WILKINSON, R. K. Sept. 25, 1958 [Sept. 27, 1957], No. 30305/57. Class 102(2). An extrusion gun comprises a piston 28, Fig. 1, carried by a toothed, preferably square, ratchet bar 22 moved by a trigger 36 through a drive pawl 44 which is loaded by a spring 50 into contact with the bar. A non-return pawl 54, loaded by a hair spring 56 into contact with the bar prevents return movement of -the bar after actuation by the drive pawl. The pawls 44, 54 carry cam followers 46, 47 respectively which for normal actuation, contact the surfaces 62, 68 of a cam 58, Fig. 5, but on movement of the cam parallel to the bar the followers move to the position shown where the pawls are then removed from contact with the bar thus allowing the bar to be withdrawn for recharging the gun.
Patent GB-1137114-A (GB)
Title: Warning devices for vehicle braking systems
Inventor: CLIFFORD STANLEY
IPC: B60T17/22
Filed: 1966-07-06
Abstract: 1,137,114. Brake indicators. GIRLING Ltd. 26 June, 1967 [6 July, 1966], No. 30319/66. Heading F2E. A warning device for a vehicle braking system comprises means 21, 22 sensitive to pressure in the system, and means 24 sensitive to the position of the brake pedal, to give a warning if the brake pedal is depressed a predetermined amount without the pressure in the sytem rising above a predetermined value. As described, switches 21, 22 connected in the two parts of a tandem braking system normally both close before the brake pedal is depressed sufficiently far to close switch 24. Should one or other braking system fail, switch 21 or 22 fails to close, and closure of switch 24 causes fuse 18 to blow, removing the shunt path from indicator lamp 16, which then becomes illuminated.
Patent GB-391795-A (GB)
Title: Improvements relating to railway sleepers
IPC: E01B3/16
Filed: 1931-11-03
Abstract: 391,795. Railway sleepers. KRUPP AKT.-GES., F., Essen, Germany. Nov. 3, 1931, No. 30351. Addition to 379,907. [Class 104 (i ).] A sleeper 1 has transverse ribs 2 integral with the sleeper and extending uninterruptedly across the top thereof. Each rib has an undercut recess 5, closed on the side facing the rail foot, for receiving the rail fastening means. The ribs are pressed up from thickened portions 7 of the underface of the sleeper. The bearing surface 8 for the rail is slightly convex.
Patent GB-734578-A (GB)
Title: A process and apparatus for the determination of isotope ratios of stable isotopes in a gas
IPC: G01N21/37
Filed: 1951-12-28
Abstract: 734,578. Radiation gas analysers. STICHTING VOOR FUNDAMENTEEL ONDERZOEK DER MATERIE. Dec. 28, 1951 [Dec. 29, 1950], No. 30356/51. Class 40 (3): An infra-red gas analyser suitable for determination of the isotope ratio of stable isotopes in a gaseous mixture of the type having two branches each containing an infra-red radiator, a screen for periodically interrupting the infrared light, an absorption chamber and a receiver chamber, is provided with an amplifier and a measuring device selectively sensitive for frequency and phase for the measurement of signal derived either from a membrane condenser separating the two receiver chambers, or from microphones coupled in opposition placed one in each receiver chamber. The receiver chambers have a length of 2 to 6 mm. As shown in Fig. 1 light from infra-red radiators 1, 2 passes through apertures in a synchronously-driven disc 3 and an adjustable diaphragm 12 (to adjust the initial signal to zero), through absorption chambers 4 and 5 and receiver chambers 6 and 7, the latter pair being separated by a membrane condenser 8 and 9. The condenser plates are connected via an amplifier 10 to a phaseindicating device and a frequenoy-sensitive A.C. galvanometer 11 or a phase and frequency sensitive meter as described in " Physica," Volume XI, No. 6. For the determination of <SP>13</SP>CO 2  in the presence of <SP>12</SP>CO 2 , the .receiver chamber is filled with 52.5 per cent of <SP>13</SP>CO 2  and 47.5 per cent of <SP>12</SP>CO 2  at a pressure of 150 to 600 mm. Hg, the receiver chamber length preferably being 3 mm. The absorption chambers may be 50 to 100 mm. long and filled at a pressure of 100 to 250 mm., one with the gas to be analysed and the other with a mixture of known concentration. Instead of having two parallel arms as shown in Fig. 1, with the receiver chambers separated by a membrane condenser, the arms may be on opposite sides of the radiator and the receiver chambers provided with microphones, which are coupled in opposition.
Patent GB-1430943-A (GB)
Title: Apparatus and method for opening and filling an envelope
IPC: B65B53/02
Filed: 1972-06-29
Abstract: 1430943 Opening and filling flexible containers F D C BATE 20 June 1973 [29 June 1972] 30398/72 Heading B8C A device for opening and filling an envelope comprises at least two opening members 63, 70 arranged so that two layers of plastics film may be sealed together at the sides of the members to form a substantially flat envelope as by the mechanism described in co-pending Application 30399/72, the members being movable apart to open at least the mouth of the envelope, and a pusher 53 movable to push an article between the members 63, 70 and into the envelope. The article may be a roll of wallpaper around which the envelope may be heat shrunk, or a collection of articles. The device is one of a plurality mounted on an endless chain. The members 63, 70 may comprise plates having upturned ends to grip the envelope and movable apart, through parallel linkages 59, 64-67, by slidable blocks 57, 58, the block 57 being connected by a compression spring 56 to a block 55. The blocks 55, 58 are mounted on brackets 33, 34 having pins 35, 36 movable in adjustable cam tracks to open and close the plates 63, 70 and to pull the envelope over the article. The pusher 53 which carries a pushing disc is secured to a chain 50 mounted on an assembly 21 which is reciprocated through another chain by a pin 41 moving in another cam track. One run of chain 50 is fixed so that the pusher has twice the lateral movement of the pin 41. In modifications the members 63, 70 may comprise rods which may be interconnected by hinged or spring members so that the rods can define a polygon, circle, or oval; the rear links 66 may have a pinion rotation by a sliding rack instead of the links being part of bellcranks 66, 71; the links 67 may be connected to tubes 59 by a scissor or lazy tong linkage; or the chains may be replaced by belts or cables.
Patent GB-626498-A (GB)
Title: The production of dextroratory ª‡,ª†-dihydroxy-ª‰,ª‰-dimethyl butyric acid
IPC: C07C59/10
Filed: 1946-10-11
Abstract: Dextrorotary a ,g  - dihydroxy-b ,b  - dimethyl - butyric acid is separated from the corresponding racemate by reacting an alkali metal salt, e.g. formed with sodium hydroxide, of racemic a ,g -dihydroxy-b ,b -dimethyl butyric acid with a solution of brucine dissolved in an inorganic acid such as hydrochloric acid and removing the dextrorotary a ,g -dihydroxy-b ,b -dimethyl butyric acid-brucine acid salt formed.  This may be treated with sodium hydroxide and extracted with a solvent, e.g. ethylene dichloride to produce laevorotary a ,g -dihydroxy-b ,b -dimethyl butyrolactone.  A detailed example is given.
Patent GB-467083-A (GB)
Title: Improvements in and relating to the production of rubber threads, filaments and the like and fabrics made therewith
IPC: D01D5/42
Filed: 1935-11-04
Abstract: Rubber threads are made by compounding with masticated or coagulated rubber an extensibility-reducing agent of the kind referred to below in such an amount as will render the threads sufficiently inextensible to be conveniently manipulated when making them into a fabric, and forming the resulting mix into threads, e.g. by extrusion, printing or spreading, or by sheeting the mix and cutting the sheet into threads.  The extensibility-reducing agents are those described in Specifications 447,972, 448,098, 449,314, 449,462, and 459,434 and may be for example glue, gelatine, casein, albumen or similar proteins; water-soluble gums, natural or synthetic resins, cellulose esters or ethers such as methyl cellulose; or sugar or sodium silicate.  The rubber mix may be made more plastic to facilitate extrusion &c. by treating it with a solvent e.g. naphtha for the rubber, with or without a solvent e.g. water for the extensibility reducing agent, preferably in a colloid mill. The extensibility of the thread or fabric made from the thread may be restored by treating it with hot water, with or without simultaneous vulcanization or dyeing of the thread or fabric.  The inextensible thread may be steamed with simultaneous stretching, dried and then in the stretched condition made into fabric.
Patent GB-319523-A (GB)
Title: Improvements relating to mangles, wringing machines and the like
IPC: D06F45/00
Filed: 1928-10-23
Abstract: 319,523. Burnley Components, Ltd., and Ward, D. K. Oct. 23, 1928. Mangles and wringers, pressure and rollerseparating arrangements for. - An emergency pressure-releasing device for mangles, wringing machines and the like comprises two arms or a forked arm hinged at one end and adapted to engage a nut on the screw which exerts the mangling pressure on the roller spring and to be released from a T-shaped latch member when a handle is actuated to release the pressure. In the form shown, two arms A are pivoted at a in the mangle frame so as to bear at their centre on a non-circular nut c<1> on the screw c which, by means of a ball and cup joint c<2>, transmits pressure to the roller spring D. The outer ends of the arms are normally held under the cross-bar a<2> of a T-shaped latch which is pivoted in the frame at a<1> and adapted to release the arms when a handle a<3> is knocked downwards.
Patent GB-632278-A (GB)
Title: A system for controlling separately excited direct current motors
IPC: H02P7/30
Filed: 1947-11-19
Abstract: 632,278. Automatic control systems for motors. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 19, 1947, No. 30665. Convention date, Dec. 6, 1946. [Class 38 (iv)] [Also in Group XXXVII] An electric motor having armature 4 and separatelyexcited field winding 5 is connected to an alternating- current source 1 through a rectifier 3, the direct current output of which is dependent upon the magnetizing ampere-turns of a transductor 2. The transductor has a one hundred per cent self-magnetization component as represented at 6, a magnetizing component due to the winding 7 which is traversed by the load current and acts in the same direction as the self-magnetization, and an opposing component which is essentially proportional to the direct voltage of the rectifier, and which is derived from a winding 8. The transductor, Fig. 1, has a positively-acting substantially constant magnetizing component due to a winding 9 which is regulable by a resistor 10. This component essentially determines the speed of the motor which is kept substantially constant independently of the load torque. The resultant magnetization of the windings 7 and 8 is arranged to be proportional to the difference of the motor armature voltage and the resistance drop, the magnetization of the winding 9 representing the induced armature voltage at the desired speed. The resultant magnetization of the windings 7, 8 and 9 is normally zero, but if the component due to winding 8 decreases due to a speed drop, for example, the resultant magnetization becomes positive and the motor armature current and speed is readily increased thus restoring normal operating conditions. Similar conditions obtain with an increase of motor speed. In a modification (Fig. 3, not shown) a motor is connected to a variable direct current source and in series with a bridge-connected rectifier which is fed from an alternating current source through a transductor. The transductor has self-magnetization and two control windings. One control winding acts in the same sense as the self-magnetization and is energized in accordance with the current in the main direct current circuit, the other control. winding acting in the opposite direction, and being connected between the direct current terminals of the rectifier.. The additional voltage supplied to the motor by the rectifier may be arranged to completely or partially compensate for the ohmic voltage-drop in the motor. Suitable proportioning of the control windings of the transductor will afford a rising or falling speedtorque motor characteristic. Specifications 557,829 and 589,341 are referred to.
Patent GB-394223-A (GB)
Title: Apparatus for filling bottles or the like
IPC: B67C3/04
Filed: 1932-10-31
Abstract: 394,223. Bottling. ROSSI, P., 132, Via Settignanese, Florence, Italy. Oct. 31, 1932, No. 30682. Convention date, Dec. 2, 1931. [Class 125 (ii).] A device for simultaneously filling a plurality of bottles with liquids comprises a container holding a quantity of liquid greater than that required to fill said bottles, a number of feed pipes equal to that of said bottles emerging from the container at points above the normal liquid level therein, and a displacing member adapted to descend in the container to raise the liquid level above said points so as to cause the discharge through each of said pipes of sufficient liquid to fill a bottle. As shown two containers c, c<1> are each provided with twelve rows of pipes g<1>, each row comprising six pipes, and two floats d, d<1>, connected by a bar e are forced down into the containers by means of an arm q. This arm is pivoted at one end p<1> of a support p carried on a swingable frame o and in its forked central part is pivoted a roller r which rests on the head s of a pin s<1> passing through a sleeve t in a coiled spring u which normally holds the parts in the positions shown. A screw v limits upward movement of the bar e. The bottles are placed, in spaced relationship, in a carrier, and are pushed, over rollers, on to a table a<1>. The carrier holding the empty bottles thus depresses both ends w<2>, w<3>, of a lever w pivoted at w<1> on the under side of the frame a<2>, and the carrier holding the filled bottles is pushed out on to the frame a<3>. The table a is then pushed upwards by means of a lever l pivoted at m and engaging a forked lug k secured to the table a. The pipes g<1> enter the bottle necks and the floats are then depressed.
Patent GB-297306-A (GB)
Title: Improvements in a boiler feed-water regulator system
IPC: F22D5/14
Filed: 1927-11-16
Abstract: 297,306. Northern Equipment Co.. (Assignees of Veenschoten, V. V.). Sept. 17. 1927, [Convention date]. Drawings to Specification. Feedwater, controlling.-Apparatus for con. trolling the feedwater supply to a boiler comprises a thermostatic tube in which is maintained a water column that has its height varied in accordance with the steam flow, contraction of the tube being arranged to open the feedwater valve. The invention is described in connection with the apparatus shown in Specification 297,305 in which the thermostat 10 operates the feedwater valve 24 and is connected to opposite sides of a restricted orifice 25 in the steam main.
Patent GB-462193-A (GB)
Title: Improvements in or relating to adaptors for connecting bottles to taps
IPC: B67D3/00
Filed: 1935-11-07
Abstract: 462,193. Adaptors for bottling-taps. BONNAUD, H. M. Nov. 7, 1935, No. 30833. [Class 125 (ii)] An adaptor for securing bottles to filling taps comprises a tubular member a into which the neck b of the bottle is inserted, and a U-shaped member f which is passed through holes in the member a under the bead c on the bottle-neck. A gasket g completes the joint.
Patent GB-244125-A (GB)
Title: Improvements in or relating to machines for greasing baking and like pans
IPC: A21B3/16
Filed: 1925-12-07
Abstract: 244,125. Moller, W. Dec. 5, 1924, [Convention date]. Baking-trays, greasing.-In a machine for greasing baking-pans, the brushes 7 are supplied with grease by pipes 11 which are moved by a rock shaft 16 either to the operative position or to the inoperative position shown in dotted lines in Fig. 2. The grease is supplied by a plunger pump 14 from a tank 15 through flexible tubes 13, the plunger 30 and the rock shaft 16 being operated by a pedal 22 pivoted to the frame 1. The shaft 16 carries sleeves 17 which are positioned axially by rods 36 secured to yokes 35 which embrace the sleeves. The pipes 11 are connected to the pipes 13 by T-pieces 12 carried by the sleeves 17. The shaft 16 is rocked by an arm 19 connected by a rod 20 to the pedal 22, the lower end 21 of the rod 20 being bent under the pedal to make a loose connection therewith. A compression spring 24 tends always to place the pipes 11 in the operative positions. The plunger 30 is coupled to the pedal 22 by a rod 27 and a lever 28 having a lost-motion slot connection with the rod 27. A compression spring 32 tends always to elevate the plunger 30. A motor reciprocates a rack 6 which engages pinions on the shafts of the brushes 7 which are thereby rotated. In operation, depression of the pedal 22 releases the end 23 of the pedal from the part 21 and allows the spring 24 to place the pipes 11 into the greasing position during which movement the plunger 30 remains stationary owing to the lost motion slot connection. Further depression of the pedal causes the plunger 30 to descend and supply grease, through the pipes 11, to the brushes 7. On the release of pedal 22 the stronger spring 32 overcomes the weaker spring 24 and restores all parts to their original positions.
Patent GB-176433-A (GB)
Title: Improvements in fire escapes
IPC: E06C5/16
Filed: 1920-11-02
Abstract: 176,433. Howard, T., and Slade, A. J., Harris, S., and Orris, A. Nov. 2, 1920. Portable wheeled ladder escapes. - A portable electrically-operated fire-escape consists of a collapsable telescopic tower pivotally mounted on a turntable on a motor vehicle, and provided with an endless-chain conveyer, which is also adapted both to act as a ladder and to effect the extension of the tower through the medium of a sliding cross-head on the lowest section and rope-andpulley gear. The turntable 2 is operated from crank-handles 8 by means of a drum and cable 3, and carries a slidable rectangular frame 9 having braces 10 adapted to be lowered into engagement with the ground to steady the structure. The lower tower section is trunnioned at 45 on the frame 9, and is tilted by means of a pair of swing- ing arms or cranes 32, pivoted at 33, and a pair of endless chains 39, which are operated by an electric motor 36 and are connected by a crossbar 41 to the lower tower section, a ratchet device being provided at 42. The telescopic tower comprises interengaging channel members provided with roller bearings, each section being provided with lateral members and tie-rods, folding platforms, and folding gangways. The lowest section of the tower is provided with a cross-head 52, Fig. 7, which slides downwards in guides 53 to effect the extension of the telescopic sections through rope-and-pulley gear. The cross-head 52 is operated from motors 47 through a shaft 50 and a pair of endless chains 73, chain sprocket wheels 57 being locked during this operation by a clutch 60. The cross-head 52 is locked in its lowest position by a bolt 62. By disconnecting the clutch 60, the chains 73, which are connected by cross-rods or rungs, can be used as an endless conveyer, persons or goods being lowered in bags 75, Fig. 2, which are hooked to the rungs and are automatically released on reaching an inclined guideway 77. The endless conveyer acts as a ladder for the ascent of firemen, and ladders may also be connected to the tower sections. The tower may carry flexible hose and nozzles.
Patent GB-1268154-A (GB)
Title: Curing method of epoxy compounds
Inventor: HASHIMOTO SEI
IPC: C08G59/44
Filed: 1970-06-25
Abstract: 1,268,154. Curing epoxy resins. SAN ABBOT Ltd. 25 June, 1970, No. 30988/70. Heading C3B. Epoxy resins are cured using as catalyst at least one N- (aminoalkyl) -lactam in which n = 2-11 and m = 2-6. I may be prepared in situ by hydrolysis of a diazabicycloalkene or an addition salt thereof with at least one molar equivalent of water. Typical II are 1,8- diaza - bicyclo - (5,4,0) - undecene - 7 and 1,5- diaza - bicycle - (4,3,0) - nonene - 5. From 5-20% by wt. (based on the epoxy resin) of catalyst may be used. The catalyst may also be used in conjunction with conventional epoxy resin hardeners, e.g. polycarboxylic acid anhydrides or polyamines. Curing may take place at 5-120‹ C.
Patent GB-1332532-A (GB)
Title: Aluminium-based bearing alloys
IPC: F16C33/12
Filed: 1971-07-02
Abstract: 1332532 Aluminium-base alloy DAIDO METAL CO Ltd 2 July 1971 [28 Nov 1970] 31134/71 Heading C7A An alloy composition comprises in weight per cent:- the balance being aluminium and impurities. The alloys are particularly sinter for use as bearings is internal combustion engines.