baber/WOPTO huggingface dataset:
Patent GB-1088103-A (GB)
Title: Improvements in or relating to hydraulic dynamometers and like rotary hydraulic apparatus
IPC: G01L3/04
Filed: 1964-01-15
Abstract: 1,088,103. Torque measuring device. HEENAN & FROUDE Ltd., G.A. EVANS and I.M. JARVIS. April 6, 1965 [Jan. 15, 1964], No. 1829/64. Heading G1W. [Also in Division F1] An hydraulic dynamometer or pump of the type in which one or more rotors is arranged to rotate a liquid within a casing in order to measure or control torque or to produce pressure is characterized in that a screen of cylindrical form having slots therein surrounds circumferentially at least part of the rotor or rotors so that, in operation of the apparatus, any fluid turbulence that is likely to arise in a rotating annular ring of liquid in the gap between the rotor or rotors and the screen will be substantially reduced as the liquid passes through the slots in the screen to the outlet of the apparatus. The screen is arranged concentric with the rotor or rotors and is spaced slightly in the radial direction from the rotors. The screen is either cylindrical or part cylindrical in which case it is arranged in the outlet of the apparatus. In Figs. 1, 2, 4a and 5-12 (not shown) the screen is arranged in an hydraulic dynamometer and in Figs. 13-16 (not shown) the screen is arranged in a hydraulic pump of the type disclosed in Specification 823, 572 and a pressure generator of the type disclosed in Specification 736,975 respectively.
Patent GB-512393-A (GB)
Title: A method of making valve springs
IPC: C21D7/06
Filed: 1939-01-19
Abstract: 512,393. Making springs. BOCHUMER VEREIN FUR GUSSSTAHL - FABRIKATION AKT.-GES. Jan. 19, 1939, No. 1878. Convention date, March 9, 1938. [Classes 83 (ii) and 83 (iv)] Altering physical structure.-In a method of making internal combustion engine valve springs an electro steel wire of known composition is drawn to the final measurement, heat treated and wound, hardened in oil, and is then bombarded uniformly with steel balls having a tensile strength greater than that of the spring and having a diameter of about 1 to 2 m.m. The spring is rotated about its axis and about the centre point of its axis to distribute the bombardment' over its entiresurface and the steel balls are blown from nozzles by compressed air. For standard springs the air pressure is about 20 grams per sq. c.m. and the bombardment is continued for about 3 minutes. The treatment is stated to produce surface tension in the springs and remove surface blemishes.
Patent GB-1298244-A (GB)
Title: Coating compositions for photographic anti-halation layers
Inventor: PADDAY JOHN FRANK
IPC: G03C1/825
Filed: 1970-01-15
Abstract: 1298244 Photographic antihalation layers KODAK Ltd 14 Jan 1971 [15 Jan 1970] 1958/70 Heading G2C A photographic material having a polyester film support carries on one surface of the support an antihalation layer containing a light-absorbing pigment material, e.g. carbon black, an alkalisoluble or softenable polymeric binder, e.g. a copolymer of methyl methacrylate and acrylic acid, and an aliphatic polyphosphate anionic surface active agent, e.g. of the formula M 5 R 5 (P 3 O 10 ) 2  where R is an aliphatic group of 4-12C such as 2-ethylhexyl and M is an alkalimetal or ammonium cation. The antihalation layer is removable in alkaline processing baths. The layer may also contain an adhesion promotor such as resorcinol.
Patent GB-349069-A (GB)
Title: Improvements in a two-cycle internal combustion motor
IPC: F02B75/02
Filed: 1930-01-20
Abstract: 349,069. Engine details. KRATZER, H. J., 3734, Utah Place, St. Louis, Missouri, U.S.A. Jan. 20, 1930, No. 1990. [Classes 7 (ii) and 7 (vi).] Valves; cylinders, ports and passages of.- In a two-stroke engine, exhaust at 16 and inlet at 13 are controlled by a sleeve valve 11 having corresponding ports 17, 14 and acting in conjunction with the piston. The sleeve may lag behind the piston, in which case the sleeve controls the time of opening of both inlet and exhaust ports, and the piston determines their time of closing. Alternatively, the sleeve may be in advance of the piston and determine the opening of both ports and the closing of the inlet ports, the piston controlling the closing of the exhaust port. The inlet passage 13 in the cylinder, and the sleeve port 14 are inclined upwardly and tangentially. Valve gear.-The sleeve valve 11 is reciprocated by an eccentric 18 connected to a lug 22 by a pin 21, on which is mounted a roller 28 working in a guideway 29 on the crank case. Regulating.-A manually-actuated controlling- member 23 is provided for the inlet 13.
Patent GB-1177521-A (GB)
Title: A Process and Apparatus for Controlling the Rate of Flow of a Fluid Stream.
Inventor: FACON PIERRE JEAN ALPHONSE
IPC: F15C1/16
Filed: 1967-01-13
Abstract: 1,177,521. Fluid regulations. BERTIN ET COMPAGNIE. Jan. 13, 1967 [Jan. 14, 1966; April 8, 1966], No.2020/67. Heading G3H. The angle at which a fluid stream issues from a momentum exchange chamber Fig. 1 into a vortex chamber 6 is determined by the pressure of the fluid in inlet 1. The chamber 6 has a pair of opposed outlets 7 and receives a fluid stream through chamber 4 which is subjected to the action of a main jet issuing from nozzle 3, and a deflector jet issuing from nozzle 3a and fed from the power source 1 through a flow resistance 5 which may be constructed as illustrated in Figs.4, 5, 6 and 7 (not shown). The device is arranged so that the fluid flows into the chamber 6 in directions 10-12 according to the pressure in source 1. In a modification Fig. 2 (not shown) the chamber 4 is symmetrical with nozzle 3, and the outlets 7 are arranged eccentrically on chamber 6. In another embodiment Figs.8, 9 (not shown) the chamber 4 has curved sides similar to those shown in the further embodiment illustrated in Fig. 10. Here defined passages 24a, b, c are provided for the power jet and a pair of interconnected cavities 23a, b are provided to prevent wall adhesion. This arrangement is further modified according to the embodiment of Figs. 14, 15 (not shown) by providing two defined paths only for the power jet, which paths are arranged radially and tangentially in chamber 6. In another embodiment Fig. 16 the power jet divides between pipes 32, 33 which respectively provide two radial inlets 32a, b, and two tangential inlets 34a, b into the vortex chamber. In yet another embodiment Fig. 17 the radial inlets 32a, b are fed into an annular tube 36 connected by annular chambers 37a, b to vortex chamber 6 which receives the tangential flow from inlets 34a, b Fig. 18 (not shown). This embodiment is further modified according to Figs. 19, 20 (not shown) by providing tangential slots 46 in an annular duct (45) arranged within chamber 37. The inlets 32, 33 being connected to chamber 37 at opposite sides of the duct (45). In the final embodiment Fig.22 vortex chamber 48 has pervious walls which admit fluid from inlets 32 and which are connected to injectors 34a, b. Figs. 12, 13 (not shown) illustrate the operation of the various devices described.
Patent GB-1117542-A (GB)
Title: Fuselage-mounted retractable undercarriage
IPC: B64C25/10
Filed: 1966-01-17
Abstract: 1,117,542. Retractable undercarriages. RECHERCHES ETUDES PRODUCTION R.E.P. 17 Jan., 1966 [15 March, 1965], No. 2112/66. Heading B7G. An aircraft undercarriage leg is retractable about a pivot 9 in the fuselage inclined to the plane of symmetry of the fuselage, and a wheel, or a pair of wheels, 2, 3 is mounted on an arm 4 connected to the leg by a universal joint which allows the arm to pivot about a horizontal axis, when on the ground, and about a substantially fore and aft axis during retraction. The joint is formed by a member 6 hinged at 5, 7 to the arm 4 and the leg respectively, and the member 6 is connected to a rod 10 hinged at 12 to the fuselage so that as the leg is retracted, the member 6, arm 4 and wheels 2, 3 are pivoted about the hinge 7. The leg is splayed outwardly in the extended position, and the geometry of the system is such that when retracted, the leg extends in the fore and aft direction, the arm 4 and the leg are co-planar and the wheel axis is vertical.
Patent GB-1389183-A (GB)
Title: Process for the preparation of polymer dispersions
IPC: C08F2/00
Filed: 1973-01-16
Abstract: 1389183 Emulsifier-free polymer dispersions HOECHST AG 16 Jan 1973 [18 Jan 1972] 2258/73 Heading C3P An emulsifier-free polymer dispersion is prepared by polymerizing a vinyl ester, ethylene and 2-15% based on the vinyl ester of an acrylamide of formula where X is hydrogen or methyl, Y is hydrogen or -CH 2 OZ and Z is hydrogen or an alkyl or acyl group of up to four carbon atoms, in the absence of emulsifier at a pH of 3 to 7 using an organic peroxide or hydroperoxide and a watersoluble reducing agent as initiator. Part of the vinyl ester, and acrylamide, some water and some of the peroxide are mixed in a reactor which is then pressurized with ethylene and heated and then solutions of the remaining peroxide in the remaining vinyl ester, the remaining acrylamide in water and the reducing agent and a buffer salt in water are added over several hours. In examples the monomers are ethylene, vinyl acetate, and acrylamido optionally with N-methylolacrylamide or methacrylamide; the initiator is t-butylhydroperoxide and sodium disulphite and the buffer salt is sodium pyrophosphate. In some cases ammonium persulphate and thiourea dioxide are added after the addition of the other ingredients is complete.
Patent GB-510084-A (GB)
Title: Improvements in and relating to cinematograph projection screens
IPC: G03B21/58
Filed: 1938-01-24
Abstract: 510,084. Projection screens. MARTIN, C. W. Jan. 24, 1938, No. 2284. [Class 97 (i)] The rear tunnel of a structure comprising a projection screen, a viewing tunnel with a flared mouth, and a rear light-shielding tunnel, has parallel walls, and the whole structure is compact and self-contained; the structure may be collapsable, masks and extension flaps may be provided, and an opaque screen may be mountable in front of the translucent screen. As shown, a frosted glass or cellulose screen 1 is mounted in a frame 2 provided with front and rear tunnels 3, 4 respectively. The tunnels are of plywood strengthened by corner fillets 8, have dull black interiors, and have feet 9 for support on a table, with or without height adjustment means, or legs standing on the floor. The front tunnel 4 has divergent side walls 5, a sloping bottom wall 7 and a horizontal top wall 6. The rear tunnel has parallel walls which may be a little shorter than the height of the screen, and extension flaps, either hinged or detachably secured by clips, may be provided on the walls, or masks having central openings of various sizes may be interchangeably fitted on the mouth of the tunnel. An opaque screen 13, housed in grooves in the feet 9 when not in use, may be held by a channel 10 and turn-buttons 11 in front of the screen 1. A collapsable construction having hinged tunnel walls is described. If the structure is to rest on a table the bottom walls of the tunnels may be omitted.
Patent GB-269689-A (GB)
Title: Improvements in gas producers
IPC: C10J3/80
Filed: 1926-01-26
Abstract: 269,689. Bentley, G. H., and Appleby, E. G. Jan. 26, 1926. Producers.-An intimate mixture of air and water for use in gas producers is obtained by heating the air by passage round the wall of the producer and bringing it into contact with a water spray in a mixing chamber. Tubes 2, communicating with a chamber 5 into which air is passed by a fan 4, encircling the producer and terminating in an adjacent chamber, are located in the shell 1. The heated air passes to a humidifying chamber 8 receiving water from a spray nozzle 9 co-axial with an outlet pipe 10 leading to a distributor 11 in the producer. In a modification the spray is thrown into the path of the incoming air. The water for the spray may be heated by passage through a jacket or pipes in the shell, or through pokers or one or more spaces formed in the producer cover. An upstanding baffle is provided in the humidifying chamber. Specification 209,211 is referred to.
Patent GB-1412197-A (GB)
Title: Integrated semi-conductor oscillator arrangement
IPC: H01L29/00
Filed: 1973-01-16
Abstract: 1412197 Semi-conductor devices KOMBINAT VEB HALBLEITERWERK FRANKFURT (ODER) 16 Jan 1973 2292/73 Heading H1K In an integrated relaxation oscillator as described and claimed in Specification 1,215,732 the emitter junction has a larger surface area than the collector junction. Frequency modulation may be achieved as described there or by. varying the temperature or illumination of the semi-conductor material. The oscillator may be combined (Fig. 3) with a transistor amplifier 15-17, the base zone of which is an extension of the oscillator base zone as shown, the collector zones of oscillator and amplifier being connected via a resistive layer 18 insulated from the base zones.
Patent GB-876795-A (GB)
Title: Improvements in or relating to linear polyphase induction machines
Inventor: WILLIAMS FREDERIC CALLAND
IPC: H02K41/025
Filed: 1957-01-23
Abstract: 876,795. Linear motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION Jan. 15, 1958 [Jan. 23, 1957], No. 2373/57. Class 35. [Also in Group IX] In a linear induction motor in which the stator field travels inwardly from either end to produce a reciprocating motion as described in Specification 763,362, each end is provided with a spring abutment to produce a rapid reversal of the armature and reduce the length of stator needed. The stator may be in the form of a tunnel, but a double stator is preferred. The invention may be used for shuttle propulsion, for coal-cutting machines, and in the form shown, for winding thread on to a bobbin (not shown) driven by a roller 34 (see Group IX). The stators 15, 16 on either side of the reciprocating armature are wound to provide fields travelling inwardly towards the centre. The armature comprises a copper block 36 having V-shaped magnetic inserts 37, and carries a thread guiding arm 38 and guiding rollers 41 at its top surface. The armature is supported on a pivot 40, on which are also pivoted arms 42, 43 loaded by springs 44 and faced with rubber blocks 50 to provide the motion-reversing abutments for the armature. As shown, the stator slots are equally spaced to provide uniform speed of travel, but if desired, this spacing may be varied to give variable speed.
Patent GB-811193-A (GB)
Title: Masted lift trucks
Inventor: QUAYLE GEORGE F
IPC: B66F9/08
Filed: 1957-01-23
Abstract: 811,193. Lift trucks. YALE & TOWNE MANUFACTURING CO. Jan. 23, 1957, No. 2403/57. Class 78 (3). A pair of vertically spaced guide shoes 24 which are secured to one side of the lifting carriage 14 of a masted lift truck, and engage one of the movable guide channels 12, prevent lateral cocking of the carriage. The movable guide frame is also prevented from cocking laterally by a guide shoe 28 which is secured to the top of one fixed guide channel 10 and engages channel 12, and a guide shoe 27 which is secured to the bottom of channel 12 and engages channel 10.
Patent GB-193249-A (GB)
Title: Improved electric wall plug
IPC: H01R13/447
Filed: 1922-01-26
Abstract: 193,249. Gee, W. Jan. 26, 1922. Plug couplings.-Relates to wall plugs in which fixed contacts 9 in the base are connected with pins 4 on the plug through an intermediate depressable bar 8 having tubular contacts 10. According to the invention the bar 8 is so connected to a spring 7 that after it has been first rotated by means of the plug inserted into it till its ends are clear of projections 11 on the base, it is depressed against the action of the spring 7 and then allowed to rotate back under the twisting action cf the spring 7 till contacts 9 and 10 engage and the ends of the bar 8 engage recesses behind the projections 11. To prevent the plug from being withdrawn without it first being turned, it may have projections which co-operate with a rim on the base.
Patent GB-1421163-A (GB)
Title: Electric power supplies
IPC: H02M7/48
Filed: 1972-01-19
Abstract: 1421163 Controlling inverters VARTA (GREAT BRITAIN) Ltd 18 April 1973 [19 Jan 1972] 2512/72 Heading H2F  In an inverter 10 coupled by means of a transformer 12 to a load 27, a D.C. supply 14 and a switching device such as transistor 17 are arranged to feed a small current to the load 27 when the on-off switch 16 is closed and to feed a signal on line 21 to the inverter 10 to start and stop operation in dependence on the setting of the on-off switch 16. As described, the inverter may supply A.C. to an intermittently operating load 27 such as the motor of a cash register. When switch 16 is closed a current flows from battery 14 via diode 30 and the emitter/base circuit of transistor 17, resistors 18 and 19 and diode 31 through the load 27 so as to turn on transistor 17 and feed a signal on line 21 to start operation of the inverter 10. During such operation, positive half cycles from output winding 26 are passed via diode 13 and battery 14 to the load 27 while negative half cycles are passed via diode 15 and battery 37 to the load 27. The main D.C. supply to inverter 10 may be derived from batteries 14 and 37 or from an external source. Batteries 14, 37 may be charged by feeding an A.C. supply across the load terminals in which case transistor 32 is turned on so as to prevent transistor 17 from turning on and thus preventing operation of the inverter. Transistor 32 similarly protects the inverter 10 against operation into a reactive load.
Patent GB-190385-A (GB)
Title: Improvements in ignition starting devices for ignition magnetos
IPC: F02P1/00
Filed: 1922-01-30
Abstract: 190,385. Boscato, V. Jan. 30, 1922. Magnetos, driving. - In trip devices for the ignition magnetos of internal-combustion engines wherein at low speeds the magneto spindle a is held stationary, by a catch n projected by gravity into the path of a fixed stop, while a spring i is being tensioned by the continued rotation of the engine shaft, and the catch is then raised from the stop by a cam to permit the spring to trip the magneto, two diametrically-opposite catches n are provided consisting of the tails of hook-shaped members o provided with weights p. The two catches are assembled, as shown in Fig. 9, so as to surround a sleeve f attached to a disc e connected to the engine shaft and so that the two hooks a.nd catches operate in one plane. Projections on the end of the sleeve f serve to raise the hooks to withdraw the catches.
Patent GB-308024-A (GB)
Title: Improvements relating to clutch driving mechanism
IPC: F16D23/12
Filed: 1928-01-28
Abstract: 308,024. White & Sons, Ltd., W. B., and Shepherd, J. Jan. 28, 1928. Operating clutches. - In treadle-engaged clutches for warp-beaming frames, the usual releasing-spring housed between the clutch members is replaced by two external springs anchored to the machine frame &c., in order to relieve the disengaged clutch of frictional drag and to improve the accessibility. The clutch of the Scotch beaming-frame comprises a lined driven disc A and loose driving-pulley D, provided with an actuating-collar E retained by a nut e and carrying arms e' pulled by screw-adjusted springs e<2>. The treadle H acts on a spring-retracted lever G coacting with a forked lever F, which embraces flats e<4> on the collar E to prevent its rotation and bears on lugs e<5> thereon to engage the clutch.
Patent GB-1261513-A (GB)
Title: Electronic data storage devices
Inventor: FORRESTER PETER ANDERSON
IPC: H01J29/14
Filed: 1968-01-18
Abstract: 1,261,513. Uses of photochromism. DEFENCE, SECRETARY OF STATE FOR. 15 Jan., 1969 [18 Jan., 1968], No. 2790/68. Heading C4S. An electronic data storage 'device comprises photochromic material 7, means for generating an electron beam 3 to produce a pattern of colour centres, means for generating an electron beam of such energy as to produce differing amounts of fluorescence in the coloured and non-coloured areas of the material without destroying the pattern and means 9 for measur - ing the fluorescence. The pattern is erased by heating. The material may be CaF 2  doped with 5 mol per cent Dy 2 O 3 ; other materials referred to are alkali metal halides,. Cd, lanthanum and rare earth fluorides, lackmanite and As 2 Si 3  in the pure form or doped with nickel, rare earth or rare earth oxides.
Patent GB-118232-A (GB)
Title: Improvements in Apparatus for Raising and Lowering Windows.
Inventor: HOWORTH FRANKLIN WISE
IPC: E05F11/38
Filed: 1918-02-20
Abstract: 118,232. Howorth, F. W., (Perfect Window Regulator Co.). Feb. 20, 1918. Reciprocating and oscillating machines. - In apparatus for raising and lowering windows, such as those of carriage doors, the window 5 is connected with a belt or chain 2 passing over a sprocket wheel 1 which is operated in either direction by ratchet or escapement mechanism actuated electro-magnetically by pressing one or other of a pair of push buttons 23, 23'. The shaft 9 of the wheel 1 carries a pair of ratchet wheels 15, 15' arranged oppositely and normally blocked by spring pawls 19, 19<1> which are released electromagnetically. The operating pawls 11 form the cores of electro-magnets or solenoids 10, 10', are forced outwards by springs, and are provided with shunt contacts 16, Fig. 5, for diverting the current when the core is drawn within the solenoid. Fig. 4 shows the electrical connexions. When the button 23 is pressed, the magnets 21' and 10 are brought into action to release the locking pawl. 19' and operate the shaft 9 so as to raise the window, while the pressing of the button 23<1> brings into action magnets 21 and 10<1> to release the pawl 19 and operate the shaft 9 to lower the window. In a modification, two pairs of electromagnets are caused to oscillate levers carrying pallets for operating a toothed wheel in the direction required.