baber/WOPTO huggingface dataset:
Patent GB-1310533-A (GB)
Title: Optical device for aligning an object
IPC: G02B27/62
Filed: 1970-04-20
Abstract: 1310533 Photo-electric alignment apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 April 1970 [23 April 1969]  18837/70 Heading G1A [Also in Divisions G2 and H4] A uniformly rotating drum grating 5 and a beam splitter 7 are included in the light path from the mirror system 1-3 of Specification 1204596 for the purpose of separating light from an object A and from its image B formed in operation of the mirror system. As described with reference to Fig.4 of Specification 1204596 the light from object A is polarized at right angles to light from its virtual image B: this light is separated by a polarizing beam splitting prism 7 whose interface 8 is built up of reflecting layers of alternately high and low refractive indices and then fed to photo-electric cells 9, 10. If the object A is not correctly aligned then the light from A and B will strike the grating 5 at different locations so that the signals from the photo-cells will exhibit a phase difference which is indicative of the degree of non-alignment of the object. Alternatively, the mirrors 1, 2 may have frequency-independent reflection co-efficients, in which case a different splitter 7 is used to separate the differently coloured light from A and B. Alignment in two directions may be achieved by incorporating a neutral beam-splitter and a second system 4-10. An alternative embodiment is also described, wherein the system of figure 3 of Specification 1204596 is modified as described above.
Patent GB-223643-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B15/44
Filed: 1923-07-23
Abstract: 223,643. Edman, G. H. July 23, 1923. Yarn supply.-In a tensioning-device for the yarn, comprising a pivoted arm A connected to one end of a spring B which raises the arm when slack occurs, the point of attachment A<4> of the spring is such that its power is exerted upon the arm through a progressively increasing leverage as the arm rises so as to excercise a gradually increasing tension on the yarn as slack accumulates, the other end of the spring B being secured to an adjustable arm C rotatable about the same axis as the arm A.
Patent GB-121203-A (GB)
Title: Improvements in Humidifying or Spraying Apparatus.
Inventor: SMETHURST HERBERT
IPC: F24F6/04
Filed: 1917-12-19
Abstract: 121,203. Smethurst, H. Dec. 19, 1917. Locking-catches. - A fitting for regulating air pressure comprises two adjustable leak-off valves j, k, one of which may be locked so that a predetermined pressure is not exceeded. The locking-means comprises a lever n, engaging notches in the cup m and retained by means of a lock. Specification 109,220 is referred to.
Patent GB-751433-A (GB)
Title: An improved vacuum hand brush
IPC: A47L5/24
Filed: 1954-06-28
Abstract: 751,433. Suction cleaners. SOC. r. 1. ELCHIM, (SELCHIM). June 28,1954 [June 8, 1953], No. 18852/54. Class 8(1). A hand brush having a vacuum cleaner comprising a motor 2 and fan 4 accommodated in the handle 1 comprises a cupshaped support 6 for the brush bristles and a filter bag 9 fastened between the handle and the support 6. The support 6 has apertures 14 in line with the fan 4 and is screwed on to the handle 1. The bag 9 surrounds slots 8 in the fan chamber and is secured to the handle 1 and support 6 by elastic rings 10. A switch 5 is provided on the handle.
Patent GB-652185-A (GB)
Title: An improved apparatus for planting seeds such as potatoes
IPC: A01C9/08
Filed: 1948-07-14
Abstract: 652,185. Agricultural implement. IRWIN, R. W., and TURNER, H. M. July 14, 1948, No. 18867. [Class 6(i)] Apparatus for sowing potatoes in previously ridged ground comprises grubber teeth 20, mounted on shoots 18, for furrowing the top of the ridges and transversely adjustable ridging ploughs 13 for reforming the ridges to their original shape. Operators standing on a platform 21 feed the seed from a hopper 17 to the shoots 18. Timing gear is provided comprising a trailing wheel 25 having projections 27 which co-operate with an arm 31 which strikes a bell 30. The shoots 18 are adjustable vertically and transversely and the machine may be used to form the original ridges by raising the shoots 18 clear of the ground. The machine is connected to a tractor by means of the frame 22.
Patent GB-383919-A (GB)
Title: Improvements in or relating to electric lamps for use in immersion in water or otherfluid medium under pressure
IPC: H01R33/05
Filed: 1932-07-04
Abstract: 383,919. Electric incandescent lamps. DAVIS, SIR R. H., 187, Westminster Bridge Road, London. July 4, 1932, No. 18882. [Class 39 (ii).] To render fluidtight a joint between two parts of an electric lamp for use in a fluid under pressure, more particularly the joint between the cap and the bulb of a lamp for submarine use, a resilient rubber covering is applied over the joint. The Figure shows a lamp for submarine use in which the stem 17 of the lamp bulb is secured to the end of a gunmetal cap 5 by cement 19, the joint being surrounded externally by a rubber sleeve 22. Exterior and internal recesses 16, 15 respectively are formed near the end of the cap 5, the recess 16 receiving a rubber packing ring 21 whilst the recess 15 co-operates with a shoulder 20 on the lamp stem 17 to form a key for the cement 19. An insulating block 10 is mounted within the cap 5 and corries terminal pins 11 which project into the cavity of a hollow fitting 1 secured in watertight manner, by studs 7 and packing 8, to an annular flange 6 formed on the cap 5. The fitting 1, which may carry a suspension hook, is formed with a gland 3 for carrying the current-supply cable 4 into the fitting. The end of the cable 4 within the fitting 1 is provided with ebonite-shrouded terminal sockets 12 for connection to the terminal pins 11 of the lamp. A reflector or guard may be secured to the fitting by the studs 7.
Patent GB-379040-A (GB)
Title: Improvements in or relating to tins or containers for paint and the like
IPC: B44D3/12
Filed: 1931-07-01
Abstract: 379,040. Paint tins &c. POSTANS, MORLEY BROS. & BIRTLES, Ltd. and MORLEY, G. F., Trevor Street Works, Birmingham. July 1, 1931, No. 18949. [Classes 66 and 125 (i).] In a tin or like container for paint &c. having a brush combined with the lid, a sump consisting of a concave recess is formed in the flat bottom so that when the lid is placed on the tin, the brush will enter the sump. The tin comprises a seamed cylindrical wall 1, bottom 2, formed with a sump 7 and a ring 3 into the opening of which fits the lid 4, which has a domed centre with a cylindrical ribbed neck portion 5 to which is attached the brush 6. If desired, the neck 5 may be screw-threaded and open so that a cap with a brush may be screwed on to it. Specification 347,479 is referred to. According to the Provisional Specification, in lieu of a sump the bottom of the tin may be of dished conical or like formation.
Patent GB-869412-A (GB)
Title: Improvements in or relating to apparatus for the production of deuterium-enriched hydrogen
Inventor: DENTCN WILLIAM HAVELOCK
IPC: C01B4/00
Filed: 1956-06-19
Abstract: 869,412. Cold separation of gas mixtures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 19, 1957 [June 19, 1956], No. 19011/56. Class 8(2). Apparatus for the production of deuteriumenriched hydrogen comprises a distillationcolumn 1, a two-stage heat exchanger 14, 15 in which the hydrogen feed (through 13) to the distillation column passes counter-current to deuterium-depleted hydrogen leaving the distillation column along conduits 20, 24, a refrigeration circuit (defined below), and means, e.g. the conduit 16, whereby a fraction of the deuteriumdepleted hydrogen leaving the distillation column 1 and passing countercurrently to the feed is fed to the hottest point, e.g. the compressor 2, of the refrigeration circuit. The refrigeration circuit comprises at least three heat exchangers in which deuterium-depleted hydrogen from column 1 passes countercurrently to deuterium-depleted hydrogen returning to the column and at least two expansion turbines connected between the heat exchangers in the return side of the circuit. In the refrigeration circuit shown, part of the deuterium-depleted hydrogen leaving the column 1 along conduit 20 returns along a conduit 21, through a heat exchanger 19, then heat exchangers 7, 6, 5, 4, 3, then a compressor 2, then alternately through heat exchangers 3 to 6 (reversely) and turbines 8 to 10 in succession, and then partly through a turbine 11 and a conduit 22 to the top of the column and partly through heat exchanger 7, a boiler 12, heat exchanger 19 and a valve V 4  to the top of the column. Product deuterium-rich hydrogen leaves the column by a conduit 27 and heat exchangers 3 to 7. The " fraction " above referred to, after having passed through 14, 15 by conduits not shown, is fed through a conduit 16 to the inlet of compressor 2.
Patent GB-1459802-A (GB)
Title: Rock hammers and the like
IPC: E21C37/24
Filed: 1973-04-19
Abstract: 1459802 Rock hammers and drills ARROW CONSTRUCTION EQUIPMENT Ltd 17 April 1974 [19 April 1973] 19037/73 Heading B4C A rock breaking hammer or drill comprises a tool 16 mounted in a tool holder 13 and a striking head 14 wherein a metal plate 20 is fixed to the tool holder 13 and supports a resilient rubber pad 25 and free striker plate 26 the tool 16 being freely mounted for limited axial motion in the tool holder. The tool holder moves on guides 11 and can be held away from the work by attachment to the striking head 14 by means of a chain 37.
Patent GB-853876-A (GB)
Title: Semiconductor diode
IPC: H01L23/488
Filed: 1957-06-18
Abstract: 853,876. Semi-conductor rectifiers. SARKES TARZIAN Inc. June 18, 1957 [Aug. 15, 1956], No. 19163/57. Class 37 A semi-conductor diode Fig. 1, comprises a cylindrical housing 40 of insulating material into the opposite ends of which terminal members 14, 15b, partially extend, terminal member 15b being provided with an annular groove 60 adjacent the housing, so that it may be received in the complementarily fashioned clip 65 of a connector 62, thus ensuring correct polarisation of the diode when it is inserted in the connector. As shown in Fig. 3, into the cylindrical housing 40, which is internally threaded, are sealingly screwed the first terminal 14 comprising a solid stud on the inner end of which is located a rectifying element, preferably formed of a silicon wafer 45 and a soft metallic dot 46, and the second terminal 15, contact between the rectifying element and the terminal 15 being effected by a mushroom-shaped contact member 47, the stem of which is partly located in a blind axial bore 51 in terminal 15 against a compressed coil sprung 50. The member 47 and spring 50 may be replaced by a resilient conductive member, Fig. 4, (not shown) comprising a central portion which contacts the rectifying element and a plurality of radial fingers which are folded back and crimped, so as resiliently to engage bore 51. The bore of housing 40 may be initially untapped, thread being tapped therein by the screwing in of the terminals; alternatively, if the terminals are knurled they may be inserted by linear forces axially applied.
Patent GB-1439595-A (GB)
Title: Furnaces or process fluid heaters
IPC: F28F9/013
Filed: 1972-04-25
Abstract: 1439595 Tubular heat exchangers FOSTER WHEELER Ltd 16 May 1973 [25 April 1972] 19221/72 Heading F4S  In a fired process fluid heater 12 comprises a plurality of tube passes positioned around the periphery of the heater and extending between centrally disposed inlet and outlet headers 22 and 20, process fluid is led to/from the heater via transfer lines 15 which pass freely through openings 17 in the heater wall, each tube pass being capable of movement and/or flexing to accommodate expansion and movements of the manifolds occurring during heating of the process fluid. The tube passes, which each consist of four vertical tubes 26, and two horizontal L-shaped tubes 34, together with the inlet and outlet manifolds 20 and 22 are supported by a number of balance mechanisms 43 each comprising an arm 44 pivoted near one end about a pin 69. The end of arm 44 nearest pin 69 supports a shaft 74 which in turn supports tube passes via an arrangement comprising hangers 86, wire rope 62 and pulleys 80. A counterbalancing weight 72 is connected to the other end of arm 44. The lower ends of the tube passes are provided with rods 40 which pass through holes 38 in the base of the heater 12. The openings 17 in the heater wall are covered with seals which prevent leakage but allow vertical and horizontal movement of the transfer lines 15.
Patent GB-1123733-A (GB)
Title: Turn-bolt fastener
IPC: H05K7/14
Filed: 1966-05-02
Abstract: 1,123,733. Turn-bolts. BOLKOW G.m.b.H. 2 May, 1966 [6 May, 1965], No. 19289/66. Heading E2A. A turn bolt fastener 6 comprises a lever 9 mounted on a screw threaded part 8 of a rotatable screw 7 for linear movement along the screw threaded part 8 upon rotation of the screw and urged by a spring 18 into a fastening position, rotation of the screw in one direction causing the lever 9 to pivot against the action of the spring to an inoperative position and rotation of the screw in the opposite direction causing the lever 9 to move along the screw threaded part into its fastening position, continued rotation of the screw then moving the parts 12, 5 to be fastened into close engagement. As shown, the parts 12, 5 are a unit carrying electronic components slidable in a rack, respectively, the lever 9 of the fastener cooperating in the fastening position with an abutment 23 on the rack 5. The lever 9 is slotted to engage a spring 24 as the unit is entered into the rack and is freed therefrom by initial rotation of the screw to allow the lever to pivot towards the fastening position by the spring 18.
Patent GB-719273-A (GB)
Title: An isonicotinic acid derivative and method of preparing it
IPC: C07D213/86
Filed: 1952-07-31
Abstract: The invention comprises 1-isonicotinyl semi-carbazide of the formula <FORM:0719273/IV (b)/1> which may be prepared by heating isonicotinyl hydrazide with urea, preferably above 100 DEG  C., e.g. by refluxing in an inert liquid, e.g. amyl alcohol.
Patent GB-284791-A (GB)
Title: Improvements in power transmission mechanisms for the driving wheels of motor vehicles
Filed: 1926-08-05
Abstract: 284,791. Abramson, A. Aug. 5, 1926. Differential or balance gearing. - Relates to wheel drives intended to replace the differential gear on motor vehicles and permit of a difference of about one revolution in the number of revolutions made by the driving wheels in rounding curves, and of the kind in which the wheels are driven by a single tappet 6 on the driving member 3, engaging lugs 7<1>, 7<11> on the inner ends of the divided wheel axles 1, 1<11>. According to the invention, the driving connection between the tappet 6 and the lugs 7<1>, 7<11> is maintained by a yielding stop such as 11, Fig. 3, which retards the beginning of the free-wheeling until the wheel resistance is sufficient to overccme the stop. Fig. 4 shows pivoted latches 12<1>, 12<11> which are spring-pressed against stops 14<1>, 14" adapted to rest upon the lugs 7", 7<1>. The arrangement is such that, when one lug 7' moves away from the driving tappet 6, a latch 12" is lowered to prevent the other lug 7<11> moving away from the tappet and vict versa.
Patent GB-738387-A (GB)
Title: Improvements in and relating to coiling apparatus for metal strip
Inventor: LANGEN MATHIAS
IPC: B21C47/30
Filed: 1952-07-31
Abstract: 738,387. Winding and reeling. LOEWY ENGINEERING CO., Ltd. July 3, 1953 [July 31, 1952], No. 19366/52. Class 83 (4). [Also in Group XVI] A coiling apparatus for metal strip comprising a centrally disposed rotated mandrel and a plurality of pressure-backed and retractable guide rollers spaced therearound has a plurality of elements disposed on the mandrel around its periphery which are movable outwards under centrifugal action to constitute yieldable supports for the strip coiled on the mandrel. A collapsible mandrel 15 surrounded by guide rollers 16 comprises a number of segments 19 movable against springs 37, Fig. 6, outwardly of a core part 17 by wedge-shaped spreaders 20 positioned between adjacent segments. The spreaders 20 are formed on their inner side with a saw-tooth series of cam surfaces 27 engaging similar surfaces 28 on rack members 29 moved axially by a rod 31. Lightly held by weak springs, in slots in the periphery of the segments 19 are a number of shoes 25 which, when the mandrel is rotated, are flung by centrifugal action out from the slots, their outward movement being limited by rings 26 so that the out-flung shoes and the segments 19 when expanded form a continuous cylindrical surface. The shoes may or may not protrude from the mandrel surface when the mandrel is at rest. The mandrel is not expanded until the first few coils of strips, supported on the shoes 25, have been formed. In a modification, Figs. 8, 9 (not shown), the outward movement of the shoes is limited by the ring at a distance from the centre of the mandrel greater than that of the surface of the expanded segments. In this modification the segments may thus be expanded before coiling and the segment springs 37 dispensed with. In another embodiment, Fig. 12, the coiler has no collapsible segments the mandrel being formed by a non -expandable drum 215 with shoes 225 of T-shaped section accommodated in slots in its periphery. Before coiling the shoes 225 are expanded by bars 229, similar to the bars 29, and on rotation of the mandrel the shoes are flung outwards to give the yielding support for strip during coiling.
Patent GB-1417653-A (GB)
Title: Aircraft
IPC: B64C5/04
Filed: 1973-04-24
Abstract: 1417653 Controlling aircraft MESSERSCHMITT-BOLKOW-BLOHM GmbH 24 April 1973 [24 May 1972] 19425/73 Headings B7G and B7W An aircraft has a fuselage 1, wings 2 with highlift flaps 3 and foreplanes 6 provided with trailing edge flaps 7, the foreplanes being pivotable from the position shown in full line in which they each form a leading edge extension to the root part of the adjacent wing 2, to an intermediate position (not shown) in which they form wing leading edge slats and then to a fully extended position shown in chain dotted lines in which they act as foreplanes. Lift may be varied by operation of flaps 7 and to compensate for longitudinal out-of-balance moments a regulating device (not shown) connects the foreplane operating mechanism with an adjustable jet propulsion nozzle 10 whereby the jet is deflected to give a nose down pitching moment.
Patent GB-1117033-A (GB)
Title: Improvements in electrical function generator
IPC: G06G7/28
Filed: 1966-05-03
Abstract: 1,117,033. Transistor circuits. GENERAL ELECTRIC CO. 3 May, 1966 [4 May, 1965], No. 19463/66. Heading H3T. A function generator giving linear amplification of input signals within a given range of amplitudes, and a constant output for signals outside the range is provided with negative feedback, and positive feedback, the latter only becoming operative when the input signal is outside the predetermined range. Input signals applied at e i , Fig. 1, are amplified in a push-pull amplifier 11, 12, 28, 30, the output from which is fed to a zero referencing circuit 54, 60, the various elements of which are so chosen that when there is no input at e i , there is no output at conductor 68. Negative feedback is applied over conductors 74, 79 to transistor 11 and positive feedback is applied over conductors 96, 101 to transistor 12 via a diode gate 80, 82 which only connects the positive feedback when a predetermined input signal is exceeded. In this condition, the amplifier saturates and the output remains constant at a level determined by clamp 102, 108. As the input increases in a positive sense a<SP>1</SP>, Fig. 3, the output increases linearly in a negative sense until the positive feedback becomes effective b<SP>1</SP> and the output changes rapidly to a constant value c<SP>1</SP>. If the input now decreases, the output remains at c<SP>1</SP> until the positive feedback is disconnected at d<SP>1</SP> whereupon linear amplification is restored a<SP>1</SP>. A similar sequence occurs for negative inputs e<SP>1</SP> . . . h<SP>1</SP>. The transition points b<SP>1</SP>, d<SP>1</SP>, f<SP>1</SP>, h<SP>1</SP> and the saturation outputs c<SP>1</SP>, g<SP>1</SP> may be individually adjusted to give various responses, Figs. 2, 4, 5 (not shown).
Patent GB-205216-A (GB)
Title: Improvements in or relating to the generation of gas for lighting purposes
IPC: C10L3/00
Filed: 1922-07-15
Abstract: 205,216. Batchelor, A. E. July 15, 1922. Carburetting.-In generating gas for lighting purposes by passing oxygen or air through a liquid hydrocarbon or a mixture composed of liquid hydrocarbons of different specific gravities, which may be rendered hydrous or contain aqueous vapour or other suitable compound containing hydrogen, a salt or salts and/or an oxide or oxides, such as potassium nitrate, strontium nitrate or oxide, or a mixture of potassium nitrate and strontium nitrate or oxide is added to the liquid hydrocarbon to render the light rays produced by the combustion of the gaseous mixture more actinic. A suitable hydrocarbon mixture is prepared by dissolving 1 oz. of potassium nitrate and ¢ oz. of strontium oxide in 1 pint of water, the solution being boiled and poured into 1 gallon of liquid hydrocarbon, such as paraffin, having a specific gravity 0.800 and preferably at a temperature of 20‹ C. This mixture is agitated and decanted to eliminate the water, after which it is mixed with 1 gallon of liquid hydrocarbon of specific gravity 0.680 and 2 gallons of liquid hydrocarbon of specific gravity 0.720, resetting in a mixture having a specific gravity 0.740. This mixture is then used in the apparatus described in Specification 196,313.
Patent GB-302875-A (GB)
Title: Improvements in apparatus for the distillation of fuels at low temperature
IPC: C10B7/10
Filed: 1928-07-05
Abstract: 302,875. Abrassart, A. Jan. 12, 1928, [Convention date]. Retorts.-In apparatus for the low temperature carbonization of partially distilled briquetted fuel, the fuel blocks are passed continuously through a retort on a flexible conveyer. The fuel is dried in a retort 1, any volatile products escaping through an outlet If, and passes through a conduit 1h into a retort 2<1> having a worm conveyer 2b and distillate outlets 2d. The distilled fuel from the outlet 2g is mixed with a binder such as pitch and made into briquettes which may be distilled by being passed through a retort 3 on an endless band 5. The distillates, from which the pitch may be recovered, escape through outlets 3k, and the carbonized fuel is discharged through outlet 3g. The retorts are heated by combustion on grates 3h or by burners 3m using the gas produced and the combustion products pass through a duct 4 leading to flues 2f and 1a around the upper retorts.
Patent GB-419203-A (GB)
Title: A shaft connection for engine plants
IPC: F16H1/22
Filed: 1934-07-03
Abstract: 419,203. Shaft couplings. BAUER, G., 82, Mittelweg, Hamburg, Germany. July 3, 1934, No. 19587. [Class 80 (ii).] Relates to plant for marine propulsion of the type in which a reciprocating engine i drives a propeller shaft k direct, and an exhaust turbine h drives it through reduction gearing g, d, the shaft b of the reciprocator passing through the hollow shaft c of the gear wheel d. The shafts b, c are connected by a cone coupling m, n, and an extension of the shaft b is connected to the driven shaft k by a sleeve coupling q. A safety nut r is provided for the cone coupling.