baber/WOPTO huggingface dataset:
Patent GB-841110-A (GB)
Title: Improvements in or relating to jet propulsion nozzle arrangements
Inventor: COLLEY ROWAN HERBERT
IPC: F02K1/40
Filed: 1957-03-13
Abstract: 841,110. Braking jet-propelled aircraft. ROLLS-ROYCE Ltd. March 11, 1958 [March 13, 1957], No. 8359/57. Class 4. [Also in Group XXVI] In a jet propulsion nozzle arrangement for aircraft wherein the nozzle is divided into a plurality of circumferentially-spaced longitudinal channels for noise suppression, peripheral outlets to atmosphere are provided in the nozzle wall and the rear end of the nozzle carries a plurality of hinged deflectors which may be moved to block the rearward flow of propulsive gases and deflect them forwardly through said peripheral outlets. In the embodiment shown wherein Fig. 2 is an end view in direction 2, Fig. 1 and Fig. 1 is a section on line 1-1, Fig. 2 the nozzle comprises an outer wall 112 and an inner wall 110 forming a bypass duct 113 therebetween, the wall 110 forming also the outer wall of the exhaust-gas passage 111. The nozzle also comprises a plurality of equi-angularly spaced hollow structures 114 each extending radially inwards from the outer wall 112 through wall 110 to a central support tube 115, each structure comprising spaced walls 114a bridged by a plurality of guide vanes 117, each pair of walls 114a diverging rearwardly from a common edge 114b so that they form a plurality of rearwardlyconverging sector-section passages for the gas from passage 111 and by-pass air from duct 113. The wall 112 which is cut away at 116 to place the interior of each structure 114 in communication with atmosphere is extended rearwardly by a cylindrical portion 18 and radial spindles 21, each carrying a sector shaped shutter 19, are pivoted in portion 18 and tube 115 for simultaneous operation by power means (not shown) from positions parallel to the nozzle axis as shown in the upper half of the figures to transverse positions. In the former position the flow from the jet nozzle is unimpeded, but in the latter position shutters 19 block rearward flow and force the propulsive jet to flow outwardly and forwardly through structures 114 and out of apertures 116. A variety of other deflectors are described for causing the deflection of the gases ; in one sector shaped shutters pivot about axes which are tangential to the circumference of the nozzle extension and move from positions outside the gas flow to transverse positions. Alternatively the same form of shutter may be extended forwardly to cover the cutouts 116 when inoperative. Clam-shell and petal type deflectors also are described and air-intake openings may be arranged forward of apertures 116 to enable cooling air to flow through structures 114 when the nozzle is operating normally. In one embodiment means is described for locking the deflectors in their operative positions. Specification 768,553 is referred to.
Patent GB-183184-A (GB)
Title: Improvements in motor lawn mowers
IPC: A01D34/47
Filed: 1921-03-17
Abstract: 183,184. Burgess, W. B., Burgess, C. E., Eldridge, J. E., and Ashbee, C. N. March 17, 1921. Lawn-mowers.-The cutting-cylinder C of a lawn-mower is driven by an electric or internalcombustion motor A of which the crank-shaft is arranged in alignment with the axis of the cutting-cylinder. The shaft and the cutting- cylinder are preferably connected through a friction device to prevent breakage should the cylinder jam. The cutting-cylinder carries a sprocket-wheel C<1> which is connected by a chain to a sprocket-wheel E mounted on and adapted to be driven through a free-wheel connection on the roller shaft F. The roller shaft has keyed thereto a spider K carrying pinions J meshing with an external gear-wheel L secured to the sprocket E and an internal gear-wheel I on a brake-drum H normally free to rotate but adapted to be held stationary by a brake operated from the handles Q. To start the machine when fitted with an internal-combustion motor, the brake is released and the mower pushed by hand. The sprocket E is driven by the pawls of its free-wheel connection with the roller axle until the engine fires, the sprocket then rotating more quickly than the axle and the pawls sliding on the teeth while the drum H is driven by the pinions J. On applying the brake the drive from the pinions is applied to the roller shaft, thus propelling the mower. According to the Provisional Specification a split metal ring, like a piston-ring, is inserted on each side to keep out grass and dirt when roller bearings are employed.
Patent GB-1061273-A (GB)
Title: Drawbench
IPC: B21C1/30
Filed: 1964-02-28
Abstract: 1,061,273. Draw benches. G. A. MITCHELL. Feb. 28, 1964, No. 8456/64. Heading B3P. A drawbench has a drawing die and a draw carriage which is moved through the draw and return strokes by an hydraulic cylinder the piston of which is connected to the draw carriage by means of sheaves and flexible cables. The apparatus comprises a stationary die stand 12, a carriage 16 including grippers 18 and running on a track 22, an hydraulic cylinder 28 secured to a stationary support 30 and having projecting piston-rods 40 and 42 and a pair of distance multiplying cable and sheave assemblies 32. The assembly 32 at the die stand end of the machine includes a stationary sheave carriage 46, a movable sheave 48 secured to the piston-rod 40 of the cylinder 28 and a take-up assembly 54 having a sheave 66 and adjustable in position by a screw 96. A cable 58 passes round the sheave 66, over sheaves 68 and 70 and is secured at 74 to opposite sides of the carriage 20. A cable 56 passes in a similar way over the sheaves of the other assembly 32 and is fastened to the carriage at 72. When hydraulic fluid is admitted through a port 76 the piston 38 moves to the left and the carriage 16 is drawn away from the die stand, the travel of the carriage being twice the travel of the piston. A rapid return stroke is obtained by making the piston-rod 40 larger in diameter than the rod 42. In a modification. Fig. 3 (not shown), the carriage travel is three times the piston travel and in a further modification, Fig. 4 (not shown), the carriage travel is four times the piston travel. The adjusting screws (96) are used to tension the cables and the piston-rods. Fig. 5 (not shown) schematically illustrates the use of a second hydraulic cylinder (98) having a piston (104) which is coaxially aligned with the cylinder (28). The effective area (104a) of the piston (104) is one-half of the effective area of the face (38b) of the piston (38). The hydraulic control circuit (100) comprises a constant speed motor (112) driving a reversible variablevolume high pressure pump (110). Two solenoidoperated valves (116 and 120) control the flow of fluid so that it can be directed to either or both the cylinders to vary the maximum capacity of the drawbench. The speed of travel is varied by altering the volume output of the pump.
Patent GB-1467078-A (GB)
Title: Method and apparatus for determining the average timing angle  in internal combustion engines
IPC: F02P17/04
Filed: 1974-02-26
Abstract: 1467078 Measuring ignition timing of IC engine SCANS ASSOCIATES Inc 26 Feb 1974 [1 June 1973] 8564/74 Heading G1U The average firing angle # degrees taken over all the cylinders of an I.C. engine, is evaluated, for an eight cylinder engine, using the Formula:- where the t; are the firing times, see Fig. 2, with respect to the immediately preceding attainment of top dead centre by the piston in an arbitrarily chosen reference cylinder, and X is the time for one complete cycle, = 2 revolutions. Appropriate formulae are given for four and six cylinder engines. According to the specification the average firing angle is a more useful parameter than the firing angles for separate cylinders, and the method employed is a modification of that described in Specification 1379070 which is referred to, in which the various time intervals required are determined by counting clockpulses. In Fig. 2 the arbitrary chosen reference piston is shown as attaining top dead centre at the instants labelled 1, 2, on the second horizontal axis, and the firing pulse for this cylinder is labelled 8 on the above axis. Subsequent firing pulses are labelled 1, 2, 3,.. and, except for manufacturing tolerances, they are spaced apart by 90 degrees intervals. Thus, as shown the firing Angle A 1  degrees of the reference cylinder is in advance, and is given by:-  where, as above, t 1  and X are the times shown. The firing angle A 2  degrees of the cylinder that fires first after the attainment of top dead centre in the reference cylinder is given by:- The firing angles of the other cylinders can be obtained similarly, and their average is then as quoted above.
Patent GB-540235-A (GB)
Title: Improvements in margin mechanism for typewriter
Filed: 1940-05-14
Abstract: 540,235. Typewriters. PAILLARD & CIE SOC. ANON, E. May 14, 1940, No. 8622. Convention date May 27, 1939. [Class 100 (iv)] In arrangements comprising margin stops which on being released from a rack are spring-urged into contact with a fixed stop and are subsequently reset by moving the carriage, locking-catches on the margin stops are dispensed with, and arrangements are provided for separately releasing the margin stops merely by relatively moving the rack and margin stops. In the arrangement shown in the Figure; margin stops 6, 7 are mounted on a square rod 8 and engage separate racks 2, 3 which are mounted on trunnions and have finger-pieces 4 which are normally held by springs 5 in contact with pins 10. When either finger-piece is moved, the rack 2 or 3 is released, and the margin stop 6 or 7 is drawn up to a stop 9 by the band 14 of a spring drum 12.
Patent GB-1259742-A (GB)
Title: Stabilization of polyphenylene oxides
IPC: C08G65/48
Filed: 1970-02-23
Abstract: 1,259,742. Stabilizing polyphenylene oxides. SUMITOMO CHEMICAL CO. Ltd. 23 Feb., 1970 [27 Feb., 1969], No. 8651/70. Heading C3R. Polyphenylene oxides are stabilized by contact with a boron compound or complex thereof of formula where R<SP>1#1</SP>, R<SP>2#1</SP>,<SP> </SP>and R<SP>3#1</SP> are halogen atoms or hydrocarbon or substituted hydrocarbon groups and two or three of them may form a ring. The process may be carried out in a solvent for the polymer or without such solvent. In examples poly - 2,6 - dimethyl - 1,4 - phenylene oxides, poly - 2,6 - dichloro - 1,4 - phenylene oxide, poly - 2,6 - diphenyl - 1,4 - phenylene oxide and poly - 2,6 - dimethoxy - 1,4 - phenylene oxide are contacted with boron trifluoride and boron tribromide alone and as complex compounds.
Patent GB-1075526-A (GB)
Title: Improvements in and relating to closure devices for flasks or bottles
IPC: B65D50/04
Filed: 1966-02-28
Abstract: 1,075,526. Stoppers. J. J. AUGROS. Feb. 28, 1966 [March 1, 1965], No. 8665/66. Heading B8T. To prevent accidental opening of an internally threaded Skirted stopper (2), Fig. 1 (not shown), a ring (1) having external threads on to which the stopper is screwed is freely journalled about the neck of the flask &c. which the stopper closes. A lower flange (5) of the rotatable ring (1) extends below and beyond the skirt (7) of the stopper. When the flask &c. is to be opened, the lower flange (5) of the rotatable ring (1) is held to prevent its rotating, and the stopper (2) is unscrewed. If the flange (5) is not held, the ring (1) and stopper (2) rotate together. The ring (1), which is preferably of plastics, has a shoulder (3) which is snapped over a ridge (4) around the mouth of the flask &c. As a modification, the ring-shaped shoulder (3) on the ring (1) may be replaced by a number of projections. The stopper (2) has an inner ring- shaped flange (11) which seats against the inside of the flask &c. neck. In a modification, the ring (1), Fig. 2 (also not shown), is snapped behind a ring-shaped ridge (12) around the neck of and below the usual stopper threads on the neck of a bottle.
Patent GB-595397-A (GB)
Title: Improvements in and relating to light projectors
IPC: F21V17/00
Filed: 1943-05-31
Abstract: 595,397. Lighting fittings. BRITISH THOMSON-HOUSTON CO., Ltd. May 31, 1943, No. 8696. Convention date, May 30, 1942. [Classes 75 (ii), 75 (iii) and 75 (iv)] A flood lighting projector comprises a conoidal reflector 10, a socket housing 11 and a supporting ring 12 adjustably mounted in a yoke 13, the housing 11 being formed with a notch 45 and the reflector 10 with a head 46 arranged to provide a sighting line parallel with the reflector axis so that the projector can be positioned in daylight to throw its beam on to a predetermined area. The reflector 10 consists of a paraboloidal section 15 closed at its larger end by a lens 15<1>, an ellipsoidal section 16, and a paraboloidal or ellipsoidal section 17 and is attached by three equally spaced latches to the ring 12. Each latch consists of a bail 20 hooked over a lug 21 on the ring and pivoted to a latching lever 22 which is pivoted to a lug 23 on the reflector, the bail and lever pivot axes being spaced so that in the upward position of the lever a cylindrical column 18 of the reflector having its axis at about 50 degrees to the axis of the sections 15, 16, 17 is drawn up against a flange 24 on the ring 12. The ring 12 is formed with lugs 47, 48 mounted on pivot bolts 14<1>, 49 on the yoke 13, a hand wrench being provided on the bolt 14<1> for locking the projector at an angle indicated by a graduated washer 50. An additional positioning ring 50<1> secured by a screw 52 facilitates the return of the projector to its initial position if moved. The socket housing 11 is latched to the ring 12 and comprises upper and lower sections 25<1>, 25, the section 25 being provided with downwardly projecting flanges, 26, 27 embracing a packing ring 28 and carrying a reflector 36 forming a continuation of the reflector sections 16, 17. The section 25<1> supports a lamp socket 30 by screws 31 and is fitted with a hushing 35 and plate 35<1> for the lamp cable 34. The bead 46 is provided with grip hooks 46<1> to facilitate the adjustment of the projector.
Patent GB-107385-A (GB)
Title: Sound Directing and Amplifying Apparatus of Disc Gramophones.
IPC: G10K13/00
Filed: 1917-06-18
Abstract: 107,385. Nier & Ehmer. May 18, 1916, [Convention date]. Horns and trumpets, arranging and supporting; tone-arm joints.-The tone-arm of a disk gramophone is connected by an horizontal pin to the inner side of a cup-shaped reflector which encloses the tone-arm and is supported by a vertical hinge on a bracket adjustably secured to the casing. Fig. 1 shows the gramophone in plan, and Fig. 6 is a vertical section through the tone-arm axis. The tone-arm 4 carries a transverse pin 6 which is free to turn in a rod 7 secured by a screw 8 to the apex of the cup-shaped reflector 5. A bracket secured to the casing 1 has a vertical arm 13 on which an eyepiece 12 attached to the reflector is pivotally supported. The mouth of the refleotor may be partially closed by an ornamental cover 9 which has a central vertical slot to permit vertical movement of the tone-arm 4 and to support it when out of action.
Patent GB-803738-A (GB)
Title: Improvements in or relating to liquid flow control valves
Inventor: JUDD WILLIAM FRANK
IPC: B67D7/42
Filed: 1955-03-25
Abstract: 803,738. Valves controlled by auxiliary valves. EMCO BRASS MFG. CO., Ltd. March 21, 1956 [March 25, 1955], No. 8796/55. Class 135. A liquid flow control valve comprises a valve chamber 4, Fig. 1, having inlet and outlet ports 2, 3 and a pressure balancing chamber 5, a valve closure member 10 for the outlet port 3 and a piston 12 rigidly connected to and of greater diameter than the member 10 and displaceable in the balancing chamber 5. In operation the opposite faces of the valve closure member 10 and the piston 12 are subject to the pressure of the liquid. A rotary plug valve 24 in the cover 6 of the chamber 5 is normally so located that liquid under pressure is admitted to the balancing chamber 5 through the bleed lines 17, 18, 20 to move the valve member 10 to or keep the member 10 in the closed position. Upon rotation of the rotary plug 24 to its other position the above bleed line connection is closed and the balancing chamber 5 is connected to the outlet 3 via a bleed line 32 within the valve-rod 8 so that the valve member 10 is slowly moved to its open position. A spring 16 acts on the piston 12 and urges the valve closure member 10 to its closed position to prevent abrupt opening of the valve on the admission of liquid to the chamber 4. The above bleed line connections may contain an adjustable restrictor plug such as 19. A sealing ring or disc 10a is located between a flange 9 of the rod 8 and the closure member 10 and the piston 12 has a sealing-ring 14. The closure member 10 has guide feet 11. A bleed hole 36 in the piston 12 enables the pressure balance to be established and maintained on each side of the piston 12 so that if either of the bleed line connections between the balance chamber 5 and the pressure chamber 4 and between the balance chamber 5 and the outlet becomes blocked the closure member 10 is moved to and/or kept in the closed position. In another example, particularly suitable for delivering aircraft fuel under pressure, Fig. 5, the bleed line connection between the pressure chamber 4 and the balancing chamber 5 is permanently open but is of much smaller crosssectional area than the bleed line connection 32 between the balancing chamber 5 and the outlet 3 which connection is controlled by a closure member 40, the actuating-rod 42 of which is connected to a trigger lever 49, actuation of which moves the closure member 40 from the closed to the open position against the pressure of a spring 45.
Patent GB-572835-A (GB)
Title: Processes for the production of pyridine-3-sulfonic acid and its salts
Filed: 1943-06-02
Abstract: For the sulphonation of pyridine in the 3-position, oleum and a catalyst chosen from mercury, aluminium, magnesium and vanadium and their sulphates are added periodically to a solution of pyridine sulphate in oleum at 250-320 DEG  C.  In examples, mercury, mercury sulphate, aluminium and magnesium are used as the catalysts.
Patent GB-564023-A (GB)
Title: An improvement relating to electric clock installations
IPC: G04B31/012
Filed: 1942-06-29
Abstract: 564,023. Clock systems. LANDIS & GYR SOC. ANON. June 29, 1942, No. 8918. Convention date, July 31, 1941. [Class 139] A clock installation including a series of impulsedriven secondary clocks has two or more master clocks, one of which is provided with regulating. mechanism while the others are synchronized by means coupled to the said regulating mechanism. As shown in Fig. 1, two master clocks 1, 1<1> are arranged in a casing 6 with a set of secondary indicators 5. The clock 1 includes an inductor 2, a driving weight 3 and regulating pendulum 4; the clock 1<1> <1>is similar except that it has no regulating pendulum. The anchor or pallet shaft of the escapement wheel of the clock 1 is provided with an arm 7 which is connected by a rod 8 to a similar arm 7<1> of the clock 1<1> so that the shafts move in unison. The form of connection is shown in Fig. 3, the rod 8 having rounded end points 9 which rest in a bearing cup 10. Pressure is adjusted by means of a spiral spring 11 threaded on a setting ring 12 on the rod 8 and on a bolt 13.
Patent GB-543183-A (GB)
Title: Improvements in and relating to rotary vane pumps
IPC: F04C29/02
Filed: 1940-05-20
Abstract: 543,183. Centrifugal separators. FULCHER, F. C. Mav 20. 1940, No. 8939. [Class 23] [Also in Group XXVI] A rotary pump with sliding vanes is furnished with a centrifugal oil separator in the discharge passage. The pump may be one as described in Specifications 522,470, 522,471, [both in Group XXVI], 522,472, [Group XXIV], 522,473, [Group XXVI], and 522,503, [Group XXIX], and the separator be located between the two main ballbearings. The separator may comprise rotor and stator parts 37, 39 Fig. 4 built up of individual rings or formed on split sleeves. The stator cavities communicate with a draining armular 44. Specifications 529,503, 538,951, 543,181 and 543,184, [all in Group XXVI], are referred to.
Patent GB-1110209-A (GB)
Title: Miniature solder remover apparatus
IPC: B23K1/018
Filed: 1967-02-24
Abstract: 1,110,209. Raising molten metal. W. S. FORTUNE. Feb.24, 1967 [Aug.4, 1966], No.8947/67. Heading F1R . A molten solder removal tool comprises a piston 48 held by a detent 38 releasable by a lever 30 and carrying a tip cleaning rod 26. The piston is connected by means of the rod 26 to a spring secured to the remote end of a cocking-shaft 22 which is withdrawn from the body member 12 and locked thereto either by engagement of member 76 with depression 28 or by key means on the shaft 22 engaging the bush 20, whereby the spring 72 is tensioned so that when the detent 38 releases the piston it is drawn rearwardly to create a suction at the tip of the nozzle 18.
Patent GB-617177-A (GB)
Title: Improvements in or relating to radar installations
IPC: G01S1/02
Filed: 1946-03-22
Abstract: 617,177. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and WITT. B. J. March 22, 1946, No. 8955. [Class 40 (vii)] In a radar system an automatically actuated warning device is operated upon the reception of signals from targets at less than a predetermined range. In the application of the invention to a ship-borne pulse system employing continuous scanning with a P.P.I. indicator, the recurrence frequency sine wave fed via transformer 1 and phasing circuit 2 is squared by valve V1, inverted by valve V2 and differentiated by circuit 5, 6 to produce at the anode of valve V3 a positive gating pulse which commences immediately after the receipt of the ground wave and is of duration controlled by resistance 6. These pulses are fed through condenser 7 to the suppressor grid of the gate valve V4, the control grid of which receives the video signals from the radar receiver over line 10. Signals received during the gated period are fed through condenser 11 and diode V5 to charge up condenser 12. When the charge on condenser 12 reaches a predetermined value the control valve V6 is cut off, releasing relay 13 and causing the alarm device to be operated. Valve V7 which is normally non-conducting is arranged to be made conducting to discharge condenser 12, by the cam-operated contacts 14 once per revolution of the aerial system. Specification 588,715 is referred to.
Patent GB-1001520-A (GB)
Title: Pipe and tube couplings
IPC: F16L21/08
Filed: 1962-03-08
Abstract: 1,001,520. Pipe couplings. AEROQUIP A.G. March 8, 1962, No. 9013/62. Heading F2G. A coupling for joining a pipe 100 to another pipe 200, or a bulkhead 301, comprises a tubular sleeve 10 having at least one annular groove 20 formed on the internal circumferential surface thereof, and on the outer circumferential surface thereof a slotted opening 21 giving access to the groove, a band clamp 30 disposed in the groove and having outwardly-directed flanges 34, 35 in the opening 21 and protruding therefrom, an annular elastomer gasket 60 disposed in the groove and within the band clamp, and means, e.g. a bolt 40, externally of the opening for joining the flanges and moving the flanges into close proximity to each other. One side of the groove may be formed by a ring having tabs 25, Fig. 7, seated in slotted openings 26 in the wall of the sleeve, or a snap ring, and a housing may enclose the opening 21, flanges 34, 35 and bolt 40. Specification 1,001,519 is referred to.