baber/WOPTO huggingface dataset:
Patent GB-1536015-A (GB)
Title: Method of regulating the operating behaviour of an internal combustion engine
IPC: G01L23/24
Filed: 1976-02-20
Abstract: 1536015 Control of IC engines ROBERT BOSCH GmbH 20 Feb 1976 [24 Feb 1975]  06742/76 Headings G3N and G3R [Also in Division F1] The basic fuel/air ratio required by an I.C. engine is established on a basis of operating parameters and is modified in response to the difference between a measurement of fluctuations in the rate of air delivered to the engine (i.e. "roughness") and a set value for this quantity. The system operates to provide as lean a mixture as possible. As shown, the quantity of air delivered to the engine per revolution is determined at 4 from a flow transducer 3 and tachometer pulses from a device on the crank-shaft. Fluctuations in this quantity, which depend upon the fuel/air ratio, are measured by unspecified means 6 and compared with a reference at 7, the reference being generated at 8 in dependence upon engine speed, engine temperature, and intake temperature. These parameters are used during normal running to produce an "optimum" mixture; an engine acceleration signal also modifies the reference value, to produce a richer or leaner mixture during acceleration or overrun respectively. The output of comparator 7 adjusts a "basic value" QS for the fuel, which is determined at 5 as a direct ratio to the measured air-flow, the ratio being dependent upon the same engine parameters as affect the reference device 8. The control signals adjust the duration of fuel injection at 12 via a controller 10. If the fluctuations are excessive, indicating misfiring, a warning may be given or the engine stopped, to prevent damage to an exhaust catalyzer. In an alternative embodiment Fig. 3 (not shown) the fluctuations adjust a servo for air throttle 2, instead of modifying the quantity of fuel injected. Various transducers 3 are described; all measure dynamic or static pressure or both, and this is related to flow.
Patent GB-1111622-A (GB)
Title: A retractable fuselage undercarriage for an aircraft
IPC: B64C25/10
Filed: 1966-02-16
Abstract: 1,111,622. Retractable undercarriages. RECHERCHES TUDES PRODUCTION R.E.P. 16 Feb., 1966 [16 April, 1965], No. 6816/66. Heading B7G. An aircraft undercarriage leg is retractable about a pivot pin in the fuselage inclined to the plane of symmetry of the fuselage, and a pair of wheels is mounted on an arm pivoted to a shaft rotatably mounted on the leg about an axis parallel to the plane of symmetry. The shaft is arranged to be rotated in a housing 7 as the leg 8 is raised upwardly, inwardly and forwardly during retraction so that the wheels are upright when retracted but inverted relative to their lowered position. The shaft may be rotated by a jack, or by a linkage 21, 17, 15 connecting a crank 14 on the shaft with a fixed point on the fuselage.
Patent GB-622086-A (GB)
Title: Improved refrigerator cabinet
IPC: F25D23/08
Filed: 1947-03-12
Abstract: 622,086. Refrigerators. GENERAL MOTORS CORPORATION. March 12, 1947, No. 6881. Convention date, March 21, 1946. [Class 29] In a refrigerator cabinet the outer shell 11 and' inner shell 12 are joined at the door opening by a breaker strip 19 carrying spring clips 28 which hold in position a removeable trim strip 35 which conceals the clips. Lugs 17, 18 by which the strip 19 is secured to the shells 11, 12 are spaced in staggered relation.
Patent GB-462930-A (GB)
Title: Apparatus for heating liquids
IPC: F24H1/12
Filed: 1936-03-07
Abstract: 462,930. Electric water - heaters. GEE, W. C., MERCER, W. E., and TULLEY, E. E. March 7, 1936, No. 6888. [Class 39 (iii)] In electric immersion heaters of the kind described in Specification 439,601, the thickness of the flowing film of water between the pipes 11-14 and the heating-element 21 is not greater than <18>/64 of an inch ; and the crosssectional area of the film is not less than <1>/10 of a square inch. The pipes are coupled in series by unions 18 to provide access to the heating-element. Baffles are provided at the inlet and outlet ends of the tank, to prevent the hot water, after circulation through the heater, from mixing with the cooler water in the tank. Specification 462,931 also is referred to.
Patent GB-799589-A (GB)
Title: Tape guiding system
IPC: G11B15/60
Filed: 1956-03-05
Abstract: 799,589. Feeding webs BURROUGHS CORPORATION. March 5. 1956 [Aug. 15, 1955]. No. 6920/56. Class 100(1) [Also in Group XXXVIII] In a tape recording apparatus employing multi-track magnetic heads, accurate alignment of the tape is obtained by means of guide pins having a shoulder portion 26 and a frusto-conical portion 25 whose smaller diameter end adjoins said shoulder portion, and by means provided for drawing the tape over the frusto-conical portion, whereby the edge of the tape engages said shoulder portion. The embodiment shows an apparatus in which reversible driving is accomplished by means of oppositely rotating capstans 14, 16 which are alternatively rendered effective by means of pressure rollers 13, 15, respectively. Two multitrack heads 4, 5 are employed and are so arranged that the tracks they follow are interlaced. Exact register of the tape with the heads is obtained by means of tapered and shouldered guide pins 6, 7 and 8.
Patent GB-789046-A (GB)
Title: Improved track tensioner mechanism
IPC: B62D55/30
Filed: 1956-03-06
Abstract: 789,046. Endless track vehicles. GENERAL MOTORS CORPORATION. March 6, 1956 [March 24, 1955], No. 7016/56. Class 79(1) An endless track tensioner mechanism comprises a piston and cylinder assembly adapted under fluid pressure to exert pressure against a wheel 6 for tensioning the track 24, the cylinder 10 having a valve 38 for the introduction of a non- compressible material (e.g. grease) to form a stop determining the limit of tensioning movement of the wheel 6. As shown the wheel 6 is slidably supported at 4 on the track frame 2, the wheel being rotatably carried by a yoke 20 secured to a piston rod 14 passing through a plug 16 screwed into an end of the cylinder 10. The cylinder 10 is pivoted at 15 on brackets 8 secured to the frame 2. One end of the cylinder is connected by a pipe 28 to a three-way valve 30 connected to branches 28, 34 leading to a pump 26 and a reservoir 40 and to a gas filled accumulator 32. In operation the valve 38 is initially opened and the valve 30 moved to its Fig. 2 position in order to tension the track 24 and grease is then introduced through the valve 38 to fill the space between the piston 13 and the plug 16. The valve 38 is then closed and the valve 30 moved to disconnect the pipe 28 from the pump 26 but to connect the pipe 28 to the accumulator 32, whereby the wheel 6 can rebound against the static pressure in the accumulator during normal running. To facilitate dismantling of the track tensioner the grease is removed by opening the valve 38 and moving the valve 30 to connect the pipe 28 only to the pump 26 until the piston 13 engages the plug 16, the valve 30 being then moved to disconnect the cylinder 10 from the accumulator 32 and the pump 26.
Patent GB-828938-A (GB)
Title: Manufacture of chlorinated polyethylene
IPC: C09D123/28
Filed: 1957-03-04
Abstract: Linear, highly crystalline polyethylene is chlorinated by suspending in water and contacting with chlorine which is applied at superatmospheric pressure.  Optional ingredients of the reaction mixture are liquid hydrocarbons or chlorinated products thereof, emulsifiers, peroxide and azo catalysts, electrolytes, and inert materials which may be present in the preparation of the polyethylene, e.g. silicic acid, kieselguhr, barium sulphate, asbestos, titanium dioxide, graphite, silicon carbide, glass powder, polyvinyl chloride, polyvinylidene chloride, polychloroprene, polytetrafluorethylene, polytrifluorochloroethylene and vinyl chloridevinylidine chloride copolymers; of which the polymeric materials may themselves become further chlorinated.  The reaction may also be catalysed with U.V. light.  The products may be crystalline or rubber-like and are soluble in and may be fractionated by carbon tetrachloride, trichlorethylene, chloroparaffins, aromatic hydrocarbons and esters (unspecified).  Urea is used as a stabilizer. Applications disclosed are as coating materials, lacquers, foils and as products of low inflammability.
Patent GB-106334-A (GB)
Title: Improvements in Pliers or Appliances for Cutting Wire.
Inventor: MALFATTI PAOLO
IPC: B26B17/02
Filed: 1916-05-20
Abstract: 106,334. Malfatti, P. May 20, 1916. Cutters.-A wire-cutter, particularly for military use, of the type operated by pulling action, comprises a pair of jaws pivoted to each other and carried by pairs of toggle levers pivoted on the end of the shaft or pole M of the implement. As shown, one jaw comprises two arms A<1>, A<2> at an acute angle to each other, a cutter B being fixed to the arm A<1>. The second cutter jaw C is pivoted at D to the jaw A<1>, A<2>, and the arms A<2> and jaw C are pivoted respectively to toggle levers F, E pivoted at G to a second pair of toggle levers F', E' which are in turn pivoted at H to a bracket I fixed to the pole M. A spring K acting, on a plunger J engaging the toggles E', F<1> returns the parts to the position shown, after they have. been extended by the pull on a wire to effect the cut. The arm A' is elongated to guide the wire to the cutters, and a fixed guard L also guides the wire and prevents it from fouling the toggles. A bayonet may be attached to the jaw A<2>, as shown in Fig. 2, by means of a pin N and a lateral projection 0.
Patent GB-548401-A (GB)
Title: Improvements in or relating to pick-holders for reversible mining machine cutter chains
IPC: E21C35/193
Filed: 1941-06-09
Abstract: 548,401. Mining machine cutter-chains. ANDERSON, A., and ANDERSON, BOYES & CO., Ltd. June 9, 1941. No. 7241. [Class 68 (i)] A pick-holder for a reversible mining- machine cutter-chain adapted to receive a rhomboidal pick 7 in alternative positions for forward or reverse cutting,comprises a pick-carrier 1, preferably a casting with the pick sockets 4 cored therein, welded at 3 to spaced side plates 2, which may be stampings, the sockets 4 converging inwardly and terminating in a common recess 5 open to the space 6 between the side plates 2 and into which cuttings, &c., may be dislodged from the sockets 4; the side plates 2 may have apertures 9 through which said cuttings &c: may be ejected by the teeth of the chain-driving sprocket. In another form, the carrier 1 has two pairs of sockets 4 to receive a pair of outwardly diverging picks. Specification 462,551 is referred to.
Patent GB-1088262-A (GB)
Title: Improvements in or relating to grates for axial flow reactors
Inventor: RIECHEL GERHARD
IPC: B01J8/00
Filed: 1965-02-19
Abstract: 1,088,262. Gratings for reactors. SCHWERMASCHINENBAU "KARL LIEBKNECHT" MAGDEBURG, VEB. Feb. 19, 1965, No. 7270/65. Heading B1F. A grate for a reactor in which solids are contacted by gases flowing up through the grate consists of two half-bowl shaped gratings 3 and 9 of different radii, the smaller grating 3 being secured by an apertured plate 6 to a shaft 2 for rotation by means of a worm drive to form a gap when the reactor requires emptying. The grating 3 rotates, sliding around in a groove in a conical supporting ring 4, in under the other grating 9, and then driving members 10 on the grating 9 engage the grating 3 and both turn together, the material falling down through the gap formed, through an outlet connection 12 to a discharge aperture 20. To rotate the shaft 2 an intermediate piece 11 is raised by means of cables 24 guided on carrying eyes 23 on the drive casing 18 and is positioned over the machined shoulder 1 of the Shaft. The piece 11 has secured to it two apertured plates 14 which are themselves secured to a base body 15 to which the worm wheel 16 is fastened. The casing 18 and its attachments is mounted for vertical sliding movement about a bearing flange 17 fastened to the outlet 12.
Patent GB-722885-A (GB)
Title: An anaesthetic substance
Filed: 1950-10-23
Abstract: The invention comprises the b -dimethylaminoethyl ester of 2-hydroxy-4-aminobenzoic acid and its inorganic acid salts.  It may be prepared by esterifying 2-hydroxy-4-aminobenzoic acid with b -diethylaminoethanol in the presence of a concentrated inorganic acid or aryl sulphonic acid in amount sufficient to suppress any appreciable evolution of carbon dioxide through decomposition of the substituted benzoic acid.  It may also be prepared by any of the esterification methods described in the Specification 722,795. In examples, (1) 2-hydroxy-4-aminobenzoic acid is esterified with diethylaminoethanol in the presence of a substantial amount of concentrated sulphuric acid; (2) 2-hydroxy-4-aminobenzoic acid is similarly esterified with ethylene chlorohydrin and the b -chloroethyl ester formed reacted with diethylamine in benzene; (3) anhydrous sodium 2-hydroxy-4-aminobenzoate is heated with 1-chloro-2-diethylamino-ethane in isopropyl alcohol; and (4) 2-hydroxy-4-aminobenzoic acid methyl ester is heated with diethylamino ethanol.  Specification 588,032 is referred to.
Patent GB-447631-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/02
Filed: 1935-03-08
Abstract: 447,631. Suction cleaners. REPLOGLE, D. B. 940, Arlington Avenue, Berkeley, California, U.S.A. March 8, 1935, No. 7330. [Class 8 (i)] A suction cleaner 1 housing a brush 2 is provided with longitudinally extending, sheet-metal sockets 7 disposed on each side of the longitudinal axis thereof and provided with openings to accommodate members carrying rollers 11. Downwardly-extending sockets 8 are also provided to receive floor-engaging strokers. The elements 7 have lugs 10 which engage the spring- members 12 carrying the rollers 11. A member 14 connects the sides of the members 12. The front of the tool has a single socket 7, the rear, a pair of sockets.
Patent GB-471901-A (GB)
Title: Shock-absorber for bodies subjected to suspension or traction forces
IPC: E21F13/04
Filed: 1936-03-11
Abstract: 471,901. Shock - absorbing devices. DAVIES, E. A., and LYNAS, G. R. G. March 11, 1936, No. 7331. [Class 78 (ii)] A shock-absorber for bodies such as mine cages or skips, road or railway vehicles which are either suspended or subjected to tractive forces comprises a pair of arm and link couplings 4, 8 between the body 6 and the supporting or traction means 9, and a resilient damping means 10 which tends to keep each arm and link out of alignment. The arms are pivoted at 5 to the body 6 and carry nose-pieces 13, or rollers, which abut against slidable plates 12 receiving the ends of the springs 10. A fixed abutment 11 separates the inner ends of the springs. Pins 15 on the arms engage slots in the outer ends 14 of oppositely-threaded members 16, the inner ends of which are connected by a correspondingly-threaded sleeve 17. An initial tension can be imparted to the springs 10 by adjusting the sleeve 17. The spring damping means may be combined with dashpot mechanism.
Patent GB-286681-A (GB)
Title: Improvements in the manufacture and production of valuable hydrocarbons or derivatives thereof from coal, tars, mineral oils and the like
IPC: C10G1/08
Filed: 1926-09-09
Abstract: 286,681. I. G. Farbenindustrie Akt.- Ges. Sept. 10, 1925, [Convention date]. Divided on 258,272. Hydrogenation, destructive.-In the destructive hydrogenation of carbonaceous materials, the catalyst used contains an oxide or carbonate of manganese, with or without metals of the 8th group of the periodic system. Specification 258,272 is referred to. Reference has been directed by the Comptroller to Specifications 4573/14, 247,585, 249,155, 249,156, and 257,256.
Patent GB-585866-A (GB)
Title: Improvements in or relating to circuits for high pressure mercury vapour lamps
IPC: H05B41/18
Filed: 1944-04-21
Abstract: 585,866. Supply systems for space discharge apparatus. FRENCH, E. A. H. April 21, 1944, No. 7485. [Class 38 (iv)] In a system for starting and operating a H.P.M.V. lamp A in the hot or cold condition, a high voltage oscillatory circuit connected across the lamp is energized to strike it upon operation of a push-button switch B, the contacts a, band c, d of which close in that order to energize respectively' a relay F, which in turn energizes and closes the main contactor 0 and the operating coil E of a mercury switch D, which then closes its normally open contacts S1 and opens its normally closed contacts S2 to connect condenser C1 across the low voltage D.C. supply through resistance R3. The coil of relay F must be energized both to close and open its contacts, so that when switch B is subsequently released, contactor O is unaffected, but coil E is de-energized, contacts S1 of switch D open and contacts S2 close to connect condenser C1 across the primary of transformer T, whereupon the H.V. surge induced in the secondary thereof is applied across the condenser C2 through low capacity chokes L1 and L2. At a critical value of the voltage across condenser C2, the spark gap G breaks down and, due to tuning inductance L3, a high-frequency oscillatory discharge occurs across the lamp A for a period which is sufficient to establish the main discharge in the lamp from the D.C. supply through the coil of an electromagnetic switch M the contacts of which close to shortcircuit the H.F. choke N. Subsequent operation of push-button switch B energizes relay F, which opens to de-energize the contactor O, which disconnects the D:C. supply from the lamp and condenser charging circuit. Condenser C5 and rectifier X protect the D.C. supply against H.F. feed-back and chokes L1 and L2 likewise protect transformer T. Condenser C4 may be connected across the lamp as shown in order to assist starting in the interval between switching off and the cold condition of the lamp.
Patent GB-317340-A (GB)
Title: Improvements in absorption refrigerating apparatus
IPC: F25B17/00
Filed: 1928-12-12
Abstract: 317,340. Fitzpatrick, H. D., (Berkel, C. F. M. van). Dec. 12, 1928. Refrigerating, absorption machines for.-A reversing absorption machine comprises a generator-absorber 1, condenser 2, storage tank 12, and an evaporator comprising a tank with circulating coils 7. The pressure and suction conduits may be regulated by a common valve 11. Specifications 294,999 is referred to.
Patent GB-1459719-A (GB)
Title: Apparatus for exposing a photosensitive layer through a mask
IPC: G03F7/20
Filed: 1975-02-24
Abstract: 1459719 Printing apparatus; optical system INTERNATIONAL BUSINESS MACHINES CORP 24 Feb 1975 [13 March 1974] 7592/75 Headings G2A and G2J Apparatus for exposing a photo-sensitive layer through a mask comprises a light source and an optical system for directing light from the source through the mask and including prisms 32, 33 through which the light passes in succession, the prism 33 being adjustably rotatable relative to the prism 32 so as to vary the deflection of the light by the prisms through a continuous range of angles, whereby the light can be made to reach the mask from different directions at a selected angle to suit the disposition of slots in the mask so as to shift the diffraction patterns caused by interference at the slots by half the distance between two adjoining side maxima so that the resulting intensity of the side maxima is weakened and that of the main maxima is increased, see Fig. 1 (not shown). The prisms 32, 33 are mounted in a holder 26 which is  rotatable by an electric motor for directing the light at the selected angle in different directions to the mask, see Fig. 2 (not shown).
Patent GB-453210-A (GB)
Title: Improved compositions for producing gas for use in pressure operated devices
IPC: C06D5/06
Filed: 1935-03-11
Abstract: 453,210. Gas - pressure - producing charges. TAYLOR, J., 7, Winton Circus, Saltcoats, Ayrshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. March 11, 1935, No. 7601. [Classes 9 (i) and 9 (ii)] Relates to charges for gas-pressure-operated devices or blasting cartridges of the kind comprising a gas-evolving composition and a non-detonating igniting element insufficient of itself to effect any substantial general rise in the temperature of the charge. According to the invention, the gas evolving composition consists essentially or largely of ammonium nitrate and contains as sensitizer a chromium compound adapted to generate chromic oxide on heating in the presence of the ammonium nitrate, so that the composition is capable of self-sustained decomposition without detonation when ignited locally at ordinary pressure by the igniting element. The chromium compound may be chromate or dichromate or other polychromate of ammonium or potassium, and its proportion may be 1 to 10 per cent of the ammonium nitrate, and will not usually exceed 20 per cent. The gas-cooling composition may include oxidizable materials such as starch, charcoal, peat, woodmeal, plant fibre, natural and artificial resins, waxes, bitumens, hydrocarbons, soaps, fats, and oils. The combustible ingredient may be fireproofed by impregnation with ammonium phosphate or sulphate, sodium tungstate, alum or borax. Less combustible or incombustible materials may also be used such as formaldehyde polymers, ammonium chloride carbonate and bicarbonate, ammonium oxalate, urea, guanidine, and hydrazine hydrate and small proportions of inorganic materials such as silica, china clay, magnesium carbonate, and chalk may also be added. The exothermic gas-evolving compositions described in Specification 430,258, are suitable for the present purpose. Specification 431,950 also is referred to. The Provisional Specification mentions also the use of manganese, molybdenum, tungsten, and uranium compounds in place of chromium compounds.
Patent GB-567430-A (GB)
Title: Improvements in the manufacture of boots and shoes
IPC: A43B13/00
Filed: 1943-05-13
Abstract: 567,430. Soles for boots and shoes. SICRA, S. V., and RICO, J. G. May 13, 1943, No. 7632. Convention date, Aug. 22, 1942. [Class 17 (ii)] [Also in Group IX] A sole for a boot or shoe is formed by combining by hand or machine after the manner of a woven fabric, warp threads of animal or vegetable fibres or metallic wire arranged in the requisite sole shape and transverse rib members or rods, which ribs or rods are subsequently withdrawn one by one and replaced by weft threads or wires which hold the warp threads of the sole in shape. A part to form the toe and heel portion of the shoe may be formed integrally with the sole. Pressure may be applied to the surfaces to flatten and smooth them.
Patent GB-232569-A (GB)
Title: Improvements in microscopes
IPC: G02B21/00
Filed: 1925-03-21
Abstract: 232,569. Zeiss, C. [Firm of]. April 16, 1924, [Convention date]. Microscopes.-A microscope of the kind in which the objective is aplanatic for its front focal point is arranged so that the eye-piece is fixed in position relatively to the stage and the objective is moved to focus the image of the object under examination. At the upper end of the stand a is provided a tubular extension b which receives a telescope objective c at its lower end and an eyepiece d at its upper end. On the extension b a tube i is displaceable in the direction of the optical axis by the pinion g and carries an objective k for the examination of an object o on the stage n.
Patent GB-608833-A (GB)
Title: Improvements in or relating to means for supporting pipes or electric conductors
IPC: F16L3/22
Filed: 1946-03-12
Abstract: 608,833. Clip brackets. CARPENTER, A. D. March 12, 1946, No. 7713. Convention date, July 11, 1945. [Class 52(v)] [Also in Groups XXVIII and XXXVI] Pipes or cables are supported on a bar 1 suspended horizontally from a support 12, each pipe being encircled by a strap 2, the ends of which pass through slots 14 in the bar and are engaged by a spring locking device which bears against the underside of the bar. The locking member comprises a U-shaped leaf spring 3 which fits within the channel section of the bar and has on its lower leaf downwardly inclined tongues 24 which engage slots in the strap. A screw 27 threaded in the lower leaf bears against the upper leaf.