baber/WOPTO huggingface dataset:
Patent GB-630192-A (GB)
Title: Improvements in a reproducing machine
IPC: B41L11/00
Filed: 1945-08-09
Abstract: 630,192. Duplicating; typewriter-like machines; ink-ribbon mechanism. GRETCHIKHINE, N. Aug. 9, 1945, No. 20483. Convention date, March 29, 1944. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 9, 1945.] [Classes 100 (ii) and 100 (iv)] In a duplicator comprising a printing-cylinder 2 carrying, for example, a mirror-script sheet K bearing a copy of book-keeping entries in a day-book, and rotatable through angles corresponding to the distance between two lines, printing being effected by reciprocation of the cylinder in a straight line, an auxiliary type - carrying cylinder 301 is provided, which is manually adjustable and prints numbers or letters on a strip L, mounted on the cylinder, each number &c. designating an account, the lines corresponding to which are identified by a common mark. Types 302 are helically arranged on the cylinder 301 which is adjusted by turning a knob 308 geared to the cylinder, the knob being held in adjusted position by a pin 311 on a sprocket 306 engaging a hole in a disc 310, and the character in printing position being indicated on a scale 316 by a pointer 315. When the whole of the matter on the cylinder 2 is to be printed, the pointer is placed opposite a part R of the scale corresponding to no type in printing position. The roller 301 is mounted in a stirrup 317 pivoted at 318 and pressed upwardly by a spring 319 whereby the roller follows the up-and-down movements of the printing-cylinder. Specification 630,191 is referred to. An ink-ribbon 335, Fig. 4, for inking the types 302 is carried by spools 333, 333<SP>1</SP> driven in turn by a pawl-lever 330 pivoted at 331 to a slide 324 reciprocated by a cam 326 on the main shaft 9, reversal of the ribbon being effected by rocking the lever 330. When a spool is full, an arm 338 or 338<SP>1</SP> carrying a roller 336 bearing against the wound ribbon is rocked about an axis 339, a switch 337 closes, and a coil 342 is energized whereby a core 343 is moved to throw an arm 346 over so as to rock the lever 330 into engagement with the empty spool, an over-centre spring 349 retaining the lever 330 in either position.
Patent GB-1378563-A (GB)
Title: Facing panel installation
IPC: E04F13/08
Filed: 1972-05-03
Abstract: 1378563 Wall facing JOHNS-MANVILLE CORP 3 May 1972 20484/72 Heading E1W Hollow wall facing panels, e.g. 12, are fixed to a structural wall at their upper or lower edge by means of clips 10, each with a channel section portion 20 having a base 28 and side walls 24, 26 which, at least adjacent the edge of the panels, are biased away from each other into engagement with the interior surfaces of the panels. The clip may be of steel, and may have a slotted upper arm 32 and a circular aperture 36 in a lower arm, the arms being fixed to the top or bottom of the wall. The side walls preferably diverge upwardly from the base, as shown.
Patent GB-782001-A (GB)
Title: Electronically rebalanced temperature sensing bridge
Inventor: IMPEY CHARLES EVERETT
IPC: G05D23/24
Filed: 1955-07-15
Abstract: 782,001. Automatic temperature control systems. VAPOR HEATING CORPORATION. July 15, 1955, No. 20586/55. Class 38 (4). In an automatic temperature control system, wherein a sufficient unbalanced output. from a bridge network comprising a resistor responsive to the controlled temperature causes the actuation of an electronic switch controlling temperature restoring means, the switch actuation also energizes heaters associated with further temperature-sensitive bridge resistors, whereby the resulting tendency for the bridge to rebalance causes a " cycling " control action. In an application to maintaining the temperature of an enclosure such as a living space (not shown), the output of an A.C. bridge network C, comprising a high negative coefficient resistor 44 responsive to the enclosure temperature and a temperature-independent datumsetting resistor 69, is applied over a two-stage amplifier comprising a double triode V1 to a grid of a pair of back-to-back phase sensitive thyratrons T1, T2 controlling respective relays D, D1 in their plate circuits. A sufficient outof-balance bridge output in either sense causes the thyratron grid bias set on a resistor 81 to be overcome, whereby one or other of the thyratrons conducts to energize its respective relay and thereby complete an energizing circuit for a reversible motor E by closure of the appropriate relay contacts. The motor is thus rotated to reposition a vane 14 in the air supply pipe A, whereby the proportion of hot to cold air in the mixture supplied to the enclosure is correctively varied to restore the temperature to the value set on bridge resistor 69. Energization of either relay also causes the closure of further contacts, whereby a circuit is closed for one of two bridge heaters F, F1 contained in housings 45a, 46a associated with high negative coefficient resistors 45, 46 in adjacent arms of bridge C. The consequent change in resistance of one of resistors 45, 46 rebalances the bridge sufficiently to de-energize the energized relay, whereby the system " cycles " about either control limit set by bias resistor 81 to reduce hunting. A resistor 57 sets the extent of bridge rebalance by varying the heating effect of elements F, F1. Abrupt changes in temperature in the inlet pipe A are compensated by similar high negative coefficient resistors 47, 48 placed in the pipe, the resistor 48 being lagged for delayed response. The resistors are connected in adjacent arms of a further branch of bridge C, whereby said abrupt temperature changes cause bridge unbalance with consequent corrective positioning of vane 14. A resistor 67 sets the magnitude of such changes sufficient to cause such corrective action. The Specification states that the temperature-sensitive resistors may have positive rather than negative coefficients.
Patent GB-1045127-A (GB)
Title: Apparatus for actuating a control member carried on a rotatable member
Inventor: COLVILLE FRANCIS JEFFREY
IPC: F16H3/44
Filed: 1965-05-15
Abstract: 1,045,127. Toothed gearing. ROLLS-ROYCE Ltd. May 15, 1965, No. 20612/65. Heading F2Q. [Also in Division F1] Mechanism for actuating a fuel control lever 17, supported on a pivotally mounted engine 12, only with respect to the engine 12 by operation of an input worm 22 comprises planetary gearing, the reaction member of which is coupled to the engine 12 by toothed gearing. The input worm 22 meshes a worm-wheel 21 carrying planet gears 25 meshing a toothed annulus 36 and a sun gear 26 on a shaft 27 coupled to the control lever 17. The annulus 36 is formed on a rotatably mounted sleeve 37 which also carries a toothed annulus 35 meshing counter-shaft gears 34 which in turn mesh a central gear 40 secured by shaft 41, flange 42 and a projection 50 to the engine casing. On rotation of the engine 12, rotation of control lever 17 is effected in the same direction and to the same extent through the gear train 40, 34, 35, 36, 25 and 26.
Patent GB-770203-A (GB)
Title: Improvements relating to conveyor belts
Inventor: BUCKLE PERCY RIMMINGTON
IPC: B65G45/12
Filed: 1955-07-13
Abstract: 770,203. Scrapers for cleaning endless conveyer belts. SIMON-CARVES, Ltd. July 13, 1955 [July 16, 1954], No. 20758/54. Class 78 (1). Means for removing materials for a conveyer belt 1 comprises a scraper 12 resiliently held against the underside of the return run of the belt, vibrating means 17 being provided to vibrate the scraper. As shown, two scrapers 12 are provided, each scraper being mounted on the end of a pair of arms 7 secured to torsion bar 10 mounted in side plates 6 positioned on anti-vibration blocks 4. Alternatively, a scraper may be mounted on a pair of leaf springs, or on a pair of arms rubber-bonded to side plates 6. Vibrator 17 vibrates the side plates 6 which shake the scraper. The scrapers may be wire brushes, or may be of rubber.
Patent GB-1098573-A (GB)
Title: Automatic analysis apparat us and method
IPC: G01N35/08
Filed: 1965-05-18
Abstract: 1,098,573. Colorimetric apparatus. TECHNICON INSTRUMENTS CORPORATION. May 18, 1965 [May 25, 1964], No. 20875/65. Heading G2J. A method and apparatus for analyzing sample liquids colorimetrically is characterized in that sample liquids in a conduit tube leading to the flow-cell of the colorimeter are separated by bubbles of gas. As shown in Fig. 6 the sample liquids are held in cups 23 mounted in a turntable 21, and are aspirated therefrom by a metal crook 75; the reagent is held in receptacle (20) and aspirated therefrom by a metal crook 77; the metal crooks 75, 77 are held in a bar 79 of a support post 81 which moves in a horizontal plane so that in one position the crooks aspirate liquid, and in the other position aspirate air Fig. 3 (not shown); the movement of the turn-table 12 and the post 81 are synchronized so that in each position of the turn-table there is aspirated, in turn, air, a small amount of liquid for washing, air and a larger amount of liquid for analysis, the reagent and sample liquids are passed along pipes 76, 78 of equal path lengths by a pump 130, mixed at a junction block 148, and passed through a mixing coil 150 into flow-cell 154 of the colorimeter analysis apparatus; a switch 175 may be synchronized with the turn-table 12 so that the analysis results are recorded on a graph 167 only when the larger amount of liquids are in the flow-cell 154.
Patent GB-957134-A (GB)
Title: Gas burner for sheet glass drawing chamber
IPC: C03B15/02
Filed: 1962-05-31
Abstract: <PICT:0957134/C1/1> A gas burner B for use in a sheet glass drawing chamber, Fig. 6, comprises an elongated tube 10 with a plurality of gas discharge openings 12 and flame retaining means 16 in a combustion chamber 14 formed over the openings 12 by means which restrict the width of the burner flame. The flame retaining means comprises two heat resistant helical coils 16. The flame width is restricted by a slot 24 formed by two angle members 18 which partly enclose the helical coils and which are secured in position by brackets 20 welded to the tube 10. A water filled cooling pipe 26 is supported concentrically in the tube 10 by means of spacing pins 28. In further embodiments, Figs. 2, 3 (not shown), the cooling water may be contained in tubular angle members, or in tubular members supported on each side of the angle members of the first embodiment. In a still further embodiment, <PICT:0957134/C1/2> Fig. 4 (not shown), elongated flat plates of heat reflecting material are supported on each side of the tube 10 and extend above the top of the angle members 18.  In a final embodiment, Fig. 5 (not shown), the heat retaining means comprises a metal rod supported in, and extending the length of the combustion chamber. Specifications 659,256 and 908,148 are referred to.
Patent GB-183717-A (GB)
Title: Improved reversible window sashes
IPC: E06B3/50
Filed: 1921-08-08
Abstract: 183,717. Clere, F. de J. Aug. 8, 1921. Pivoted - sliding windows. - Window sashes 7, 8 are pivoted to sliding stiles 9, 10 by hinges 11, 12, 13, 14 which are provided with leather straps 16 - - 22 to cover the slits between the sliding stiles and the pivoted sashes. The upper part of each strap is screwed to the sliding stile, and the lower part to the pivoted sash. A false sill 31 is provided on the sill proper 32, so that after raising the lower sash 8 and lowering the upper sash 7, the upper part of sash 7 may be swung inwards. Grooves 27, 28 are provided in the window behind the straps to form water stops, and for a similar purpose grooves 29, 30 are formed in the stiles and pivoted sashesrespectively.
Patent GB-170107-A (GB)
Title: Improvements in typewriting machines
IPC: B41J3/37
Filed: 1920-07-12
Abstract: 170,107. Burg, H. July 12, 1920. Folding type-lever machines.-An overstrike machine having a movable type-rest for expanding and compacting the type-levers is provided with a type-rest 17 on swinging arms 16 which are comparatively long, so that the type-levers 4 are supported near their free ends. The machine is attached inside a shallow box 1 on parallel links 12, 13 so that it can be swung into and out of operative position. The arms 16 are extensions of the rear links 13, so that the typerest is raised or lowered simultaneously with the swinging movements of the machine, the arms 16 being manipulated to effect these movements. Stops 18 limit the upward movement. Two lids are provided, hinged to the sides of the case. The rear edge of the box is cut away to a depth sufficient for the passage of the paper-carriage into the position shown.
Patent GB-397087-A (GB)
Title: Improvements in or relating to oscillographs
IPC: G01R13/04
Filed: 1933-03-15
Abstract: 397,087. Oscillographs. LEITZ GES., E., Optical Works, Wetzlar, Germany.- (Assignees of Disteli, A. ; Olten, Switzerland.) March 15, 1933, No. 21083. Convention date, May 30, 1932. Divided on 397,053. [Class 37.] The vibrating reed of an oscillograph is furnished with a plate L having in it an aperture L<2>, traversed by a thread L<3>:; so placed that it registers with the optical axis of the apparatus. Additional apertures L<1> of differing dimensions may be brought into register if desired. Speci. fication 397,053 is referred to.
Patent GB-258243-A (GB)
Title: Improved process of separating hafnium and zirconium
IPC: C01G27/00
Filed: 1926-08-26
Abstract: 258,243. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Sept. 12, 1925, [Convention date]. Addition to 235,217. Hafnium and zirconium oxides, phosphates, and sulphates.-Hafnium and zirconium are separated from a solution of the phosphates in concentrated sulphuric acid by first adding other hafnium and zirconium salts (such as a solution of the oxides in concentrated sulphuric acid) and then adding a precipitant such as water, when a precipitate relatively richer in hafnium is produced. Alternatively the oxides may be added in solution in dilute sulphuric acid, in which case the precipitation occurs on mixing, and addition of water may be unnecessary; or the oxides may be added to the solution of phosphates in concentrated sulphuric acid, in which case they combine with a part of the free sulphuric acid. The mixed oxides may be obtained by dissolving the phosphates in a medium containing free hydrofluoric acid and precipitating with an alkali hydrate.
Patent GB-578316-A (GB)
Title: Improvements in or relating to electric heaters for electro-plating or other vats, tanks and like vessels
IPC: C25D17/02
Filed: 1943-12-16
Abstract: 578,316. Heating liquids by electric resistances. RANDALL, P. E. Dec. 16, 1943, No. 21100. [Class 39 (iii)] A heater for electro-plating or pickling vats or similar vessels comprises electric resistances clamped externally on a plate 7 of lead or other corrosion-resisting material forming a removable wall of a chamber 1 having lead pipes 2, 3 for connection to upper and lower parts of the vat to give thermosyphonic circulation. The heating elements comprise two concentric annular metal channels 11, 12 housing insulating material in which the resistances are embedded, and dished covers 13, 14 on a bolt 9 with nuts 15 press the channels in place. The head of the bolt passes through the plate 7 and has a cover 10 of lead or other acid-resisting material. A thermostat may be placed in the vat. Specification 216,564, [Class 39 (iii)], is referred to.
Patent GB-597448-A (GB)
Title: Improvements in windings and cores of a.c. electric machines
IPC: H02K3/12
Filed: 1945-08-18
Abstract: 597,448. Windings for dynamoelectric machines and induction regulators. ENGLISH ELECTRIC CO., Ltd., and BALL, R. D. Aug. 18, 1945, No. 21125. [Classes 35 and 38 (ii)] In an A.C. machine such as an induction motor, induction regulator, Shrage motor, or a machine for a telesyn system, one member has for each phase a winding with the number of conductors per slot varying sinusoidally according to the position of the slot. The winding on the other member may be single or three-phase and its conductors may also be sinusoidally distributed while the slots on either or both members may be skewed.
Patent GB-473377-A (GB)
Title: Unit-driving printing machinery by d.c. motors
IPC: H02P5/46
Filed: 1936-07-30
Abstract: 473,377. Control of several motors. JAMES, H. V., and TAYLOR, H. July 30, 1936, No. 21141. [Class 38 (iii)] The several units of a printing press, arranged to be grouped in different combinations, are driven by separate direct-current motors of the compound-wound interpole type, and paralleling connections 6, are provided between the interpole windings 4 to equalize the current in these windings and effect an equal distribution of the load. The motors have like drooping characteristics and are supplied in parallel. The series windings of the motors may be on the same side of the armature as the interpole windings.
Patent GB-1377072-A (GB)
Title: Additives for foundry moulding sand compositions
IPC: B22C1/02
Filed: 1972-07-12
Abstract: 1377072 Foundry mould additive FOSECO INTERNATIONAL Ltd 12 July 1972 [12 July 1971] 21155/74 Divided out of 1377071 Heading C3N A foundry moulding sand composition additive consisting of or including wood flour impregnated with a liquid petroleum oil and reducing sugar in weight ratio 1-10 parts impregnated wood flour to 1 part reducing sugar. The liquid petroleum oil is preferably a predominantly aromatic cracking residue obtained from the catalytic cracking of crude petroleum oil. An optional ingredient of the additive is silica flour. The additive may be added to a foundry sand containing 3À5% by weight of a sodium silicate solution.
Patent GB-914733-A (GB)
Title: New cyclopentano-naphthalene compounds, their production and their use in steroid syntheses
IPC: C07C62/34
Filed: 1960-06-16
Abstract: The invention comprises compounds of the formula <FORM:0914733/IV (b)/1> in which Ac represents an acyl radical derived from an aliphatic, araliphatic or aromatic carboxylic acid, a process for their preparation by reducing a compound of the formula <FORM:0914733/IV (b)/2> and a process for preparing 19-nor-testosterone or its esters by cyclizing with elimination of water the above 1-acyloxy-6-keto-7-(g -ketobutyl)-9a-methyl-3a,3b,4,5,7,7a,8,9 - octahydro-cyclopentano-[2,1-c]naphthalenes of the above formula. The reduction may be carried out catalytically e.g. in methanol over palladised charcoal and the cyclization in the presence of a basic agent e.g. KOH, when the nor-testosterone is obtained or in the presence of an acidic agent e.g. HCl dissolved in acetic acid, when the nor-testosterone ester is obtained.  Examples are given in which an optically active benzoyloxy compound is used.  Racemic compounds may be similarly reacted.  The starting compounds may be prepared by a multistage process in which racemic 1b -hydroxy - 3 - carboxy - 6 - alkoxy-9ab -methyl-1,8,9,9a-tetrahydro-2H-benz-[e]-indene is resolved to the enantiomorph (see Specification 914,731), the optically active compound decarboxylated and then catalytically hydrogenated to 1b -hydroxy-6-methoxy-9ab -methyl-3a,8,9,9a-tetrahydrobenz -[e]-indane; the last mentioned compound subjected to a Birch reduction to give the corresponding 3a,4,7,8,9-pentahydro - cyclopentano-[2,1-c]-naphthalene which is esterified at the hydroxy group with benzoyl chloride (see Specification 901,852); the benzoyloxy compound is then converted into 1-benzoyloxy-6-keto-9a-methyl-3a,4,5,7,8,9 - hexahydrocyclopentano-[2,1-c]-naphthalene (see Specification 901,851) which is condensed with a ,g -dichloro-2-butene to give the 7-(g -chloro-2-butenyl) compound (see Specification 914,739) and hydrolysed to the desired 7-(g -keto-butyl) compound (see Specification 914,732).
Patent GB-240422-A (GB)
Title: Improvements relating to the circulation of liquids in steam boilers
IPC: F22D7/04
Filed: 1925-08-25
Abstract: 240,422. Niederbayerische Cellulosewerke Akt.-Ges., and Schneider, A. Aug. 25, 1925. Water valves, applications and arrangements of. - Floating or freely sliding non - return valves are fitted in the up-flow or downflow tubes of a boiler to prevent a back flow of water through the tubes. Non-return valves d are fitted at the upper or lower ends of downflow tubes b of a boiler comprising two groups of up-flow tubes a connected to a drum f. The upper ends of he up-flow tubes lead directly into the steam space of the drum. In a boiler comprising upper and lower drums connected by groups of up-flow and down-flow tubes, non-return valves are fitted at the lower ends of the down-flow tubes.
Patent GB-1306185-A (GB)
IPC: B23K35/40
Filed: 1971-04-19
Abstract: 1306185 Twin screw extruder BOHLER & CO AG GEBR 19 April 1971 [6 Feb 1970 (3)] 21300/71 Heading B5A [Also in Division B1] In an extruder provided with contra'-rotating intermeshing twin screws 1, 1<SP>1</SP> drivingly interconnected by gears, the helical screw lands 2, 2<SP>1</SP> are each provided along its crest with a welded facing 3, or 3<SP>1</SP>, which consists of a harder metal, e.g. tungsten carbide, and extends along the leading edge of the crest across a part a only of the total width b thereof. The protruding crest facing, 3 or 3<SP>1</SP> of one screw sealingly extends into a helical groove 4 or 4<SP>1</SP>, in the other screw. The extruder housing 8 is provided with an inlet opening, the lateral boundaries 10, 10<SP>1</SP> whereof are parallel to the screw lands 2, 2<SP>1</SP>, and sealing between the upstream boundaries 10, 10<SP>1</SP> and screw supporting bearings 7, 7<SP>1</SP> is effected by at least one full turn of each land 2, 2<SP>1</SP>, with relief ducts 11 being provided through the housing to detect leakage of the seal.
Patent GB-1395631-A (GB)
Title: Device for homogenizing and stabilizing the mixture rate in  internal combustion engines
IPC: F02M29/00
Filed: 1972-05-08
Abstract: 1395631 I C engine intake pipes A DAGRADA 8 May 1972 [12 May 1971 31 May 1971] 21302/72 Heading F1B A device, for use in an internal-combustion engine, comprises at least one convergentdivergent pipe length to be inserted or formed in the carburreter body downstream of the Venturi tube thereof and/or in the mixture supplying conduits, said pipe length including at least first and second adjacent successive convergent sections, the second section being downstream of the first section and having a larger included angle than the first section and at least one divergent section located downstream of the second convergent section. If Dl is the diameter of the conduit in which the device is inserted then the axial length H of the device is 0.571 to 1.8 Dl, the inlet diameter D2 is 0.8 to less than 1.0 D1, the intermediate diameter D3 is 0.766 to less than 1.0 Dl, the smallest diameter D4 is 0.60 to 0.93 Dl and the outlet diameter D5 is 0.60 to 1.0 Dl. In a modification there may be a short cylindrical section of diameter D4 and the port downstream of the minimum diameter section may comprise two divergent sections the second of these sections being downstream of the first section and having a smaller included angle than the first section. The ratio of the minimum diameter D4 to the diameter of the carburetter Venturi is 0.76 to 1.96 More than one of the devices may be provided between the carburetter Venturi and the inlet port.
Patent GB-876886-A (GB)
Title: Improvements relating to the electrical connection of a singlephase furnace to a three-phase supply
IPC: H05B7/00
Filed: 1958-07-03
Abstract: 876,886. Converting. ELEKTROKOMISK A.S. July 3, 1958 [July 9, 1957], No. 21380/58. Class 38 (2). An electric arc furnace 1 is supplied by a secondary winding of a transformer whose primary winding 3 in series with a capacitor 6 is connected to one phase of a threephase supply RST, the other two phases being connected to an inductor 7 and capacitor 8. The values of inductance and capacitance are adjustable or arranged to give optimum power factor conditions.