baber/WOPTO huggingface dataset:
Patent GB-1366191-A (GB)
Title: Method and apparatus for constructing and connecting underwater risers
IPC: E21B43/01
Filed: 1972-02-21
Abstract: 1366191 Welding by fusion B L O'BRIEN and H P O'BRIEN 21 Feb 1972 [8 March 1971] 7919/72 Heading B3R [Also in Division F2] In a method of joining pipe sections 14 to form a riser, which is connectible to a subaqueous pipe-line (18, see Division F2), gripper arms 74 are controlled by rams 93 and have jaws 84 with studs 62 projecting into holes in the flanges 60 of a pipe section, to enable sections 14 to be abutted during welding. A crane lowers a spigot end 58a of an upper pipe section into the flanged end 56 of a lower section held in the grippers. Weld material is then melted into the V-shaped groove 214. A welder is lowered, on a platform, to weld a V-shaped groove 232, which is melted in another constructional form (Fig. 5, not shown).
Patent GB-609426-A (GB)
Title: An improved shock-absorbing buffer
IPC: F16F1/373
Filed: 1946-03-14
Abstract: 609,426. Resilient mountings. DUNLOP RUBBER CO., Ltd., TROBRIDGE, G. W., and BAWCUTT, P. J. March 14, 1946, No. 7925. [Class 108 (iii)] A buffer made of a resilient material comprises a head 1 and shoulder 3 connected by a neck 2, and a shank 5 extending from the shoulder 3, of smaller diameter than the shoulder, the shank and shoulder being adapted to pass through an aperture in a base 4 for reception of the neck, the shank serving a finger grip to aid insertion. The buffer may be of natural or synthetic rubber composition and its head may be provided with one or more apertures or recesses.
Patent GB-1391902-A (GB)
Title: Ac-dc-ac-dc  converter circuit
IPC: H02M3/337
Filed: 1971-03-26
Abstract: 1391902 Converting COUTANT ELECTRONICS Ltd 24 March 1972 [26 March 1971] 7971/71 Heading H2F [Also in Division G3] In an A.C./D.C./A.C./D.C. converter, the A.C. mains is rectified at BR and fed to an inverter comprising transistors VT1, VT2, output transformer T and capacitors Cl and C2, connected as shown, the output from transformer T being rectified by diodes D so as to produce the required D.C. output. The transistors VT1, VT2 are switched by control pulses of constant width so that the output voltage may be varied by varying the repetition rate of the pulses. The pulse frequency may be of the order of 20 kHz. The output may be compared with a reference (such as a Zener diode) and the error voltage arranged to operate a voltageto-frequency converter VTF which determines the frequency of the controlled pulses from the gating circuit GT. The transistors may be saturated so that the output is a square wave.
Patent GB-503702-A (GB)
Title: Improvements in or relating to methods and devices for sealing strings and wires and the like by means of seals
IPC: B25B7/20
Filed: 1938-03-15
Abstract: 503,702. Sealing. SOMMER, F. March 15, 1938, No. 8017. [Class 146 (ii)] In apparatus comprising male and female dies and a punch for sealing a string or a wire by means of a lead seal consisting of a lead capsule without marginal incisions and an inserted lead disc, the female die e is modified to guide the parts of the string &c. immediately adjacent the capsule so as to make these parts enclose with the cylindrical wall of the capsule an angle varying from 0‹ to a maximum of 90‹ whereby when the sealing is effected there are no disfiguring burrs below the place where the string &c. enters the seal. As shown, the walls of the die e are grooved at l to accommodate the string &c. and guide the parts adjacent the seal in a vertical direction, but the walls may be slotted to allow the string parts to extend away from the seal. The male die d is grooved at w to allow the punch, slidable within the die c, to form a similar groove in the bottom of the capsule by pressing the string &.c. thereagainst. The die a is grooved at u to assist in curling inwardly the cylindrical wall of the capsule.
Patent GB-751642-A (GB)
Title: Time recording apparatus
IPC: G03B17/24
Filed: 1954-03-19
Abstract: 751,642. Timing races. OMEGA L. BRANDT & FRERE SOC. ANON. March 19, 1954 [April 10, 1953], No. 8017/54. Class 106 (4). [Also in Group XX] In timing devices for photographically recording race finishes in which the camera has a slit exposure aperture 10 and a film 2 is moved continuously at an adjustable uniform velocity, a timepiece 22 is arranged to periodically energize an electromagnet 17 the armature 16 of which carries a member, preferably a wire 15, whose shadow falls on the film 2 so as to make a trace 18. - Preferably, the timepiece is provided with a disc 33 having pins 34 to actuate contacts 21. The timepiece may be a splitsecond stop watch, the fly-back hand 24 of which is stopped just before the time represented by the first displacement 20. In the form shown, this is arranged by simultaneously completing, by means of interrupter 40, circuits of electromagnet 17 and electromagnet 42, of which the latter is immediately energized and stops the fly-back hand 24 by means of pusher 44. The stopping mechanism for the sweep second hand.23 is set by closing interrupter 50, and the hand is stopped, by means of pusher 39, on completion of the circuit of electromagnet 52 by the normal pin actuation of contact 21, thus ensuring that, when the hands are returned to zero by operating pushers 44 and 39 successively by hand, the pins 34 will be in the correct starting position. When the return of both hands together to zero is effected by pusher 39, wheel 30 is simultaneously disengaged from wheel 32 so that the disc 33 is not moved. The starting mechanism for the stop watch comprises a further electromagnet, the circuit of which is completed by the starting gun. The film drive motor is started and the interrupter 40 closed as the competitors approach the finishing line.
Patent GB-1062273-A (GB)
Title: Automatic camera
IPC: G03B7/12
Filed: 1964-02-27
Abstract: 1,062,273. Automatic photographic exposure control. EASTMAN KODAK CO. Feb. 27, 1964 [Feb.28, 1963], No. 8160/64. Heading G2A. In an automatic exposure control, the diaphragm aperture is set in accordance with a manually preselected shutter speed and the scene brightness as detected by a photo-responsive device, and the shutter speed is re-set automatically if this would result in under exposure at the maximum available aperture. Cassette 5, Fig.1, has notch 7 whose position depends on the film sensitivity, and which is engaged by lug 17 of spring-loaded sensing lever 13 attached to an element 11 with a cam slot. The final position of element 11 determines the angular setting of bell-crank 21 whose pin 19 enters the cam slot, and hence determines the position of film speed stud 25 which engages the lever 39 keyed to a shutter speed stud 33. Spring-loaded slide 31 on which the stud 33 is mounted, is manually set by rotating shutter speed cam 27. When body release 45 is depressed against heavy spring 47, lever 49 rotates clockwise about pivot 53 thereby raising meter sensing cam 55 through stud 57 until it engages needle 59 of a galvanometer incorporated in the photo-responsive circuit. Lever 77 is keyed to cam 55 and to film and shutter speed lever 39 which therefore determine the resultant position of a diaphragm control stud 73 on lever 77. Spring- loaded diaphragm blades 78, 79 are set as their cam surfaces 84, 85 engage stud 73. The manual shutter speed setting is automatically over-ridden if stud 73 reaches its upper limit of travel before cam 55 engages needle 59, since lever 77 then pivots about stud 73, driving lever 39 anti-clockwise about film speed stud 25 and so depressing shutter speed slide to a slower setting which is continuously variable. The shutter is released when the depression of slide 45, Fig.4, moves foot 89 away from pin 91 on a spring-loaded time delay sector 93 which then moves counter-clockwise about axle 94 until cam arm 95 engages speed control pair 97 secured to slide 31. The setting of pin 97 decides the number of teeth on sector 93 to engage retard weight gear 99, and so decides the shutter speed. Slide 45 depresses lever 103 whose toe 107 then engages and raises latch lever 109 to release the shutter actuating lever 111 which rotates counterclockwise about pivot 112. Heel 113 of lever 111 then depresses lever 113 which thereby opens blades 118, 119 of the shutter until arm 120 drives sector 93 clockwise by contacting pin 91. Sector 93 rotates until arm 120 slips off pin 91 and heel 113 strikes lug 121 of lever 115 to close the blades.
Patent GB-1417173-A (GB)
Title: Material handling apparatus
IPC: B65G67/00
Filed: 1972-02-22
Abstract: 1417173 Ship unloading apparatus BABCOCK & WILCOX Ltd 22 Feb 1973 [22 Feb 1972] 8166/72 Heading B8E Apparatus for unloading material from a ship's hold 29 comprises a luffable jib 10 rotatable on a platform 4 on a portal frame 1 movable by bogies 2 on quay tracks 3. The end part 10b of the jib remains horizontal during luffing through its parallel linkage connection 28 and at its remote end has a structure 31 supporting an elevator 30 on swivel means 33 allowing slewing and ensuring by gravity that the set orientation remains. Bucket wheels 41 which gather the material are supported at 40 offset from elevator 30. Material collected is conveyed by a conveyer 42 to the bucket conveyer 30b of the elevator which discharges through a shoot 35 on to the jib conveyer 17 which in turn discharges into a hopper 15 from which a conveyer 19 feeds the material down through frame 1 to a discharge conveyer 20.
Patent GB-271418-A (GB)
Title: Improvements in or relating to apparatus for operating railway points or switches
IPC: B61L5/06
Filed: 1927-03-24
Abstract: 271,418. General Railway Signal Co., (Assignees of Present, C. W.). May 20, 1926, [Convention date.]. Ground levers; electric operation; transmission mechanism applicable generally.-Railway points are operated through a selector by either a ground lever or a power machine. The selector may be combined with either the ground lever or power machines. In the former case, Fig. 2, the points are connected to a slide SB mounted in a base B and carrying a pedestal P with an arm 12 and plungers 10, 11. The arm 12 is actuated by a lever 13, padlocked at 14, so as to engage either the bar TB of an electric machine, such as described in Specification 169,795, or a sector 22 operated by a shaft 20. The shaft 20 is mounted in a bracket B<1> on the base B and carries a handle 25, padlocked at 27. In the position shown the machine is coupled to the points. In the case of a selector combined with a machine, such as described in Specification 250,929, Figs. 4, 5, the points are connected to a bar TB<1> coupled to an arm 45 carrying a lever 47 with plungers 47<1>, 47<2> to engage either an arm 41 operated by the motor or an arm 50 geared to the hand lever 51. Lever 47 is actuated by discs 56<1> on a shaft 56 operated by ,a handle 53, padlocked at 54. The arm 45 carries contacts 61 bridging insulated contacts 62 on the casing 30 of the machine, so as to indicate the position of the points.
Patent GB-558104-A (GB)
Title: Improvements in or relating to liquid damped telescopic shock absorber struts
IPC: B64C25/60
Filed: 1942-06-15
Abstract: 558,104. Shock-absorbers. AUTOMOTIVE PRODUCTS CO., Ltd., and FOSTER, S. June 15, 1942, No. 8193. [Class 108 (iii)] Relates to a telescopic, shock-absorbing strut, particularly for aircraft undercarriages, of the type comprising a liquid-containing cylinder 10 and a hollow plunger 14 containing a resilient element such as compressed air, the liquid, on compression of the strut, being forced from the cylinder into the plunger through a hollow stem 27 which is attached to the cylinder head 25 and passes through the plunger-head 18, means being provided to restrict the flow of liquid. According to the invention, a restricting orifice 48 is provided in the stem 27 and ports 54 leading from the stem into the plunger 14, to by-pass the restriction, are controlled by a spring- loaded annular valve 50 which opens automatically in the event of excessive pressure to limit the resistance of the strut to a predetermined maximum. The restricting orifice 48 is formed by an internal flange on a tubular sleeve 45 which is housed within a tubular member 39 forming an enlarged extension of the stem 27 and the end 44 of which constitutes a non-return valve engaging a seat 43 on the end of the member 39. On compression of the strut, liquid is displaced by the plunger-head 18 from space 59 and passes through ports 60 into the stem and through the restricting orifice 48, the pressure drop causing downward movement of the sleeve 45 to permit the liquid to pass between the valve seat 43 and valve 44 into the space 55 through ports 57 and into the space 63. Flow into the latter space causes downward displacement of a floating piston 62 against the action of compressed air in space 61. At a predetermined pressure of the liquid above the orifice 48, the valve 50 opens and liquid flows past the valve through ports 54 into space 55. As the strut begins to extend, the sleeve 45 is moved upwardly and the valves 44, 50 are closed, the liquid escaping from space 55 through restricting ports 58 in the plunger-head. As shown in Fig. 1, a bracket 11 is mounted on the cylinder 10 and an arm 12, which carries a wheel axle in a pivoted jaw 16, is pivoted at 13 to the bracket 11 and at 15 to the plunger 14 so that the angle of the plunger relatively to the cylinder varies when the strut is in operation. For this reason, the stem 27 is universally connected at its upper end to the cylinder head 25 and radial movement of the stem in the plunger-head 18 is permitted by a radiallyslidable plate 35 which fits closely around the stem and is held by a spring-ring 37 and plate 36 on a cupshaped part 20 of the plunger-head. The external part 19 of the plunger-head is smaller than the interior of the cylinder to permit it to rock slightly and carries sealing rings 23. In a modification, the restricting orifice 48 is replaced by two restricting orifices in series, one of which is formed by the excesspressure valve.
Patent GB-730640-A (GB)
Title: Improvements in or relating to optical devices incorporating eye-protective filters
IPC: G02B5/28
Filed: 1951-04-09
Abstract: 730,640. Light-filters. VOGT, A. April 9, 1951 [April 8, 1950; April 8, 1950], No. 8195/51. Drawings to Specification. Class 97 (1). An eye-protective device comprises a lighttransparent carrier in the form of a spectacle lens, goggles or the cover-plate of high-intensity light sources coated with a multilayer interference filter comprising superimposed layers alternately of high and low refractive index, each layer being substantially of a thickness equal to the. quotient of the wavelength corresponding to the maximum of the eye sensitivity curve and twice the refractive index of the material of that layer, so that the device has a high transparency for the whole of the visible spectrum and a high reflectivity for the adjacent infra-red and ultra-violet spectral regions. The layers may be of titanium dioxide and magnesium fluoride, a total of at least six being employed.
Patent GB-548412-A (GB)
Title: Improvements in or relating to the windings of electrical machines having commutators
IPC: H02K27/02
Filed: 1941-06-30
Abstract: 548,412. Windings for dynamo-electric machines. LANCASHIRE DYNAMO & CRYPTO, Ltd., and STANSFIELD, W. June 30, 1941, No. 8205. [Class 35] A dynamo-electric commutator machine has an armature F, Fig. 1, with at least two complete windings in the same magnetic core, the main winding M being connected to a commutator and the auxiliary winding A being connected to points J on the main winding such that it is connected to the commutator C only through active conductors of the main winding, whereby sparking at commutation is reduced. If the number of turns in the main winding is even, the point J may be at the same end as the commutator to ensure that the number of active coil sides separating it from the adjacent commutator segments is the same. The pitches of the windings need not be equal ; Fig. 2 shows an auxiliary winding A of one third the pitch of the main winding M and cross-connected at J to the back ends of a pair of duplex coils. The functions of the windings may be reversed. This arrangement may be applied to a three-phase machine. Other combinations of simplex, duplex and doublyre-entrant windings are described. Lap or wave winding may be used and the resistances of the two windings may differ.
Patent GB-498959-A (GB)
Title: Improvements in wringers
IPC: D06F45/04
Filed: 1938-03-17
Abstract: 498,959. Wringers. LOVELL MANUFACTURING CO. March 17, 1938, No. 8232. Convention date, July 1, 1937. [Class 138 (ii)] [Also in Group XXIV] The lever 19, which is pivoted at 20 to the top bar 4 of a wringer and at 22 to a link 21 which is pivoted at 23 to a side stile 2, is normally retained against the ' stile to apply the pressure by means of a catch 31 pivoted at 29 to brackets on the stile. The catch is provided with a shoulder 24 which passes through an aperture 30 in the lever and engages a cam surface 30a. When the lever is in pressure-applying position, the pivots 20, 22, 23 are out of line and the lever is in an unstable condition, but is prevented from opening by a spring 32 which bears on the inclined lip 31a of the catch. If the spring should break, the cam 30a acting on the shoulder 24 causes the catch to move to releasing position and the lever swings to release the pressure. The lever is normally swung to release the pressure by depressing one of two bars 42 extending along the front and rear of the top bar. Arms 41 on the bars engage arms 40 on a plate 34 slidably mounted on the side stile and formed with a cam end 34a engaging behind the lip 31a. The plate is normally held in raised position by a spring 37 but when depressed rotates the catch clockwise to free the shoulder 24 from the cam edge 50a and permits the lever 19 to swing. The spring 32 accelerates such movement, but in order to provide positive movement of the lever in case of the spring breaking, lugs 31b are provided on the lip 31a and engage the lever 19.
Patent GB-468300-A (GB)
Title: Improvements in or relating to inclinometers
IPC: G01C9/10
Filed: 1936-03-19
Abstract: 468,300. Inclinometers. BARKER, G. G. (Bendix Aviation Corporation) March 19, 1936, No. 8245. [Class 97 (ii)] A ball 19, Fig. 1, has a piston fit within a curved transparent tube 11 so that its movement is damped by the consequent displacement of the fluid in the tube. As shown in Fig. 1, plugs 12, 13 closing the ends of the glass tube 11 have openings 14, 15, communicating with each other through the rubber tubing 18. A pinch-cock 22 enables the amount of damping to be controlled. Alternatively the tube 11 is closed by a pair of porous plugs through which air can pass slowly when the ball moves. One porous plug may be replaced by a plug having an aperture the size of which may be controlled. The ball 19 may be of the same material as the tube 11 or of a material having the same thermal coefficient of expansion. In a modification, Fig. 2, there is a slight clearance between the ball 19 and the tube 11. The latter is sealed and filled with air which leaks through the clearance when the ball moves.
Patent GB-215519-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B61H9/00
Filed: 1923-03-24
Abstract: 215,519. Winter, H. J., Leech, K. H., and Westinghouse Brake & Saxby Signal Co., Ltd. March 24, 1923. Fluid-pressure.-Valve mechanism for the combined control of fluid-pressure brake systems of two kinds for instance a compressed air brake of the straight type on the locomotive of a train by the train-pipe of an automatic vacuum system on the train comprises in one form a diaphragm 2 the chamber 3 on one side of which is freely open to the vacuum train-pipe connected at 5 while the chamber 4 on the other side is connected to the train-pipe by passages 7, 6 past a non-return valve 8. The diaphragm is connected at 12 by a bell-crank lever 10 to a double-piston member 14, 15 open at its under side to the atmosphere by ports 19 and having a hollow stem 13. A pair of connected valves 25, 26 control passages through the piston 14 and a partition 28 which separates the chamber 23 connected at 24 to the brake cylinder from the chamber 29 connected to the compressed air reservoir. When air is admitted to the train-pipe to apply the brakes, the rise of pressure in the chamber 3 causes the diaphragm 2 to deflect to the right and to move upwardly the pistons 14, 15 and valves 25, 26. By the unseating of the valve 26 compressed air is supplied from the chamber 29 to chamber 23 and thus to the brake cylinder until the pressure on the piston 14 is sufficient to return the pistons and diaphragm and to close the valve. If the vacuum in the train-pipe is increased, the diaphragm is moved to the left, the pistons 14, 15 descend, the valve 25 is unseated and the brake cylinder exhausts until the pressure therein is correspondingly reduced.
Patent GB-116103-A (GB)
IPC: D06M11/46
Filed: 1918-05-22
Abstract: 116,103. Deutsche Gasgluhlicht Akt.- Ges. (Auerges.). May 22, 1917, [Convention date]. Liquids and gases, treating with.-In preparing artificial silk for textile industrial purposes, metallic hydrates are fixed in the fibre by means of ammonia or other alkaline-acting gases, by the method known for impregnating materials in the manufacture of incandescent mantles. The ammonia may be diluted with air or other indifferent gases. Dyed silk may be treated, and in dyeing to pattern a sample may be used previously dyed to the colour which the loading produces. The by-products of thorium manufacture may be used, these comprising cerium, lanthanum, and didymium, and the straw colouration produced by these materials being bleached if desired.
Patent GB-401946-A (GB)
Title: Improvements in or relating to socketed articles
IPC: B21K1/64
Filed: 1933-03-21
Abstract: 401,946. Forging socketed screws &c. HOLO-KROME SCREW CORPORATION, 80, Pliny Street, Hartford, Connecticut, U.S.A.-(Assignees of Purtell, W. A.; 687, Broadview Terrace, Hartford, Connecticut, U.S.A.) March 21, 1933, No. 8524. Convention date, March 28, 1932. Addition to 393,414. [Class 83 (iv).] Forging-dies and punches.-The process of forming socketed screws &c. described in the parent Specification by cold punching a socket in an unheated blank is modified by forming in the blank a uniformly tapered portion to be socketed enabling the screw &c. to be brought to its finished exterior shape by the cold punching operation in the die. A cylindrical blank is supported in the conical cavity 9 in the lower die 6 and is brought to the bulged form 2 by the action of the upper tools 14, 16 and pointed ejector 8 ; by a second operation in the same lower die 6 but using a different top die 20 the blank is brought to the form 3 with conical periphery 10, crowned top 21 and it may be partly socketed by a punch 22, the socketing being completed as shown in Fig. 4 by dies 31, 25 and punch 33. Headed screws are formed in similar manner.
Patent GB-1398955-A (GB)
Title: Hammer control mechanism of a printer
IPC: B41J9/36
Filed: 1973-02-21
Abstract: 1398955 Print hammer mechanisms SUWA SEIKOSHA KK and SHINSHU SEIKI KK 21 Feb 1973 [24 Feb 1972 30 March 1972] 8536/73 Heading B6F In print hammer mechanism comprising a permanent holding magnet 103 common to a plurality of spring-biased hammers 101 and energizable release coils 104, means are provided to compensate for the alterations to the magnetic circuit caused when a hammer is released and which cause the release of other hammers to require a greater opposing field. The compensation may be achieved by re-energizing the release coil after its respective hammer has been actuated, or by maintaining the initial current until a print cycle has been completed. The coil 104 may comprise two parts, one part 104 2  representing a reset coil. Alternatively a single coil may be energized in reverse sense to act as a reset coil.