baber/WOPTO huggingface dataset:
Patent GB-404540-A (GB)
Title: Non dazzling projector of high efficiency
IPC: F21V11/00
Filed: 1933-06-09
Abstract: 404,540. Vehicle &c. lamps. WETZEL, J., 130, Boulevard Brune, Paris. June 9, 1933, No. 16601. Convention date, June 16, 1932. [Class 75 (iv).] A light projector, particularly applicable for use as a vehicle lamp for projecting a downwardly directed beam across the full width of the road or for the illumination of a rectangular or other wide surface by means of a beam falling on the surface at a very small angle, comprises a source of light at the centre of curvature of a rear reflector 1 which is circular in cross-section and a series of rigid or flexible reflecting blades 2 which are flat or of parabolic or other curvature in crosssection and arranged in front of the light source with their parallel edges substantially at right-angles to the axis o x of the projector. One or more point or linear sources of light may be employed and the rear reflector may be in the form of half a circular cylinder or a hemisphere. In the latter case use may be made of a spherical electric lamp bulb with half its surface silvered to act as a reflector. In the form shown in Fig. 1, the innermost edge c of each blade overlaps, with respect to the incident light rays, the outermost edge d of the next blade remote from the axis, and the edges c, d are distributed on two curved surfaces. The space between the innermost blades may be closed by a diffusing glass, a lens, or an opaque screen. The sides of the projector may be closed by a pair of plane reflectors 3 at right-angles to the edges c, d or by a pair of half paraboloidal reflectors, a light source being arranged at the focus of each half paraboloid. The blades 2 may be mounted in slots in the side reflectors 3, their ends engaging the side walls of the projector casing 5 and being fixed in position by metal strips, or they may be mounted in notches in a pair of relatively adjustable supporting members. Alternatively, they may be mounted in side supports by means of tenon-and-mortise joints. In the form shown in Fig. 6, the upper and lower halves of the rear reflector 1 are connected respectively to the supports 10a, 10 of the lower and upper group of blades 2, and are separately adjustable about a transverse axis.
Patent GB-1081864-A (GB)
Title: Improvements in or relating to implements for the lateral displacement of crop lying on the ground
IPC: A01D78/00
Filed: 1965-04-20
Abstract: The subject-matter of this Specification is the same as that of Specification 1,081,865.
Patent GB-456074-A (GB)
Title: Improvements in detecting circuits for radio receiving systems
IPC: H03D7/08
Filed: 1935-06-07
Abstract: 456,074. Valve detecting circuits. MAEDA, H., 324, Nakanobu-cho, Ebara-ku, Tokio. June 7, 1935, No. 16648. Convention date, Aug. 13, 1934. [Class 40 (v)] A detecting circuit arrangement comprises a two grid valve the anode and control grid circuits of which are back-coupled to produce oscillations, the output being taken from the second grid circuit. In the Figure the valve 13 acts as the first detector of a superheterodyne receiver the anode circuit being magnetically coupled to the control grid circuit 11 through coil 14, while the intermediate frequency output is taken from the screen grid circuit 16.
Patent GB-1526123-A (GB)
Title: Connection of a pipe to an opening in a body particularly a manhole riser
IPC: F16L5/10
Filed: 1976-04-24
Abstract: 1526123 Manholes J C ROSSBOROUGH 24 April 1976 16723/76 Headings E1C and E2B [Also in Division F2] The specification discloses an alternative arrangement for connection of a pipe to an opening in a side wall of a manhole riser of Specification 1450913, the arrangement comprising a tapered connector boot 204 of elastomeric material clamped by a band 211 to the exterior of the pipe 203 where it enters the opening 202 in the riser, and clamped to the interior of the opening 202 by a clamping band 212 having toggle arms 212A 212B which can be faced over-centre in a radially expanded condition of the band by a hydraulic jack (not shown) an installation of the boot 204. Spaced ribs 209 around the outside of the boot 204 enhance the seal to the opening 202.
Patent GB-447578-A (GB)
Title: Improvements in or relating to vacuum electric discharge tubes
IPC: H05H6/00
Filed: 1935-06-08
Abstract: 447,578. Discharge apparatus ; atomic disintegration. WOLOGDIN, V., Esperova Str., Leningrad. June 8, 1935, No. 16734. [Class 39 (i)] In a vacuum tube, such as a thermionic valve, the negative space charge is wholly or partially compensated by positive electrons emitted bv the anode. In addition to a control grid, an additional grid may be provided near the anode to control the positive electron stream. The positive electrons may be produced by bombarding the anode with gammarays, for example, from a ThC<1> source arranged near the anode, or by disruption of atomic nuclei. In a Po+A1 preparation placed on the anode, for example, alpha-rays from the polonium generate positrons in the aluminium.
Patent GB-925508-A (GB)
Title: Improvements relating to apparatus for producing very strong magnetic fields
Inventor: ALLIBONE THOMAS EDWARD
IPC: H01F7/20
Filed: 1958-05-23
Abstract: 925,508. Electric coils. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 21, 1959 [May 23, 1958], No. 16742/58. Drawings to Specification. Class 35. [Also in Group XL (a)] Apparatus for producing a magnetic field of high intensity comprises an electrical solenoidal conductor winding of aluminium which has been purified to produce a very high conductivity and means for circulating a very low temperature coolant along or around the conductor to maintain it at a low temperature. The aluminium may be purified by zone refining and may be cooled by helium cooled to liquid hydrogen temperatures. The conductor may be hollow with the coolant passing through it, or may be in the form of sleeving around ducting of material of greater mechanical strength such as commercial aluminium. Alternatively the conductor may be in the form of a solid rod or rods secured to ducting carrying the coolant. The conductor may be a toroidal winding surrounding a toroidal thermonuclear reactor.
Patent GB-130226-A (GB)
Title: Improvements in Controlling Gear for Hydraulic Presses, Shears and the like.
IPC: B23D15/14
Filed: 1918-10-16
Abstract: 130,226. Stewart & Co., D., and Holmes, T. E. Oct 16, 1918 Intensifiers; press ram retracting-devices; press working valves.-In presses &c. operated by steam hydraulic intensifiers and of the type in which the press head is raised by steam, its rising being controlled by a valve in the exhaust from the hydraulic cylinder, the inlet and exhaust valves A, B, Fig. 1, of the lifting-cylinders are connected by slotted links E', E<2> to a lever D<2> weighted at E and operated from the usual controlling-lever C of the intensifier by connexions including a tappet lever C<2> and tappets C<3>, C'. Weights D<3> are provided on the spindles of the valves A, B, the inlet valve A being normally open and the exhaust valve B closed. The valve H, Fig. 2, controlling the exhaust from the hydraulic cylinder is operated by means including a pedal J, lever K', and spring-controlled tappet K2.
Patent GB-297703-A (GB)
Title: Improvements in or relating to rubber boots or overshoes with high tops
IPC: A43B3/16
Filed: 1927-06-25
Abstract: 297,703. Liverpool Rubber Co.. Ltd., and Davies, I. W. June 25, 1927. Overshoes; top boots. -A rubber boot or overshoe with a high top comprises an upper leg portion b of rubber lined with canvas or the like and with a quick fastening device c, and a foot portion a provided with a complete heel a<1> of solid rubber vulcanized integral with the golosh. The rubber at the top of the leg portion may be thickened as at d. Specification 129,622, [Class 44, Fastenings, Lock &c.], is referred to.
Patent GB-1463200-A (GB)
Title: Nickel-aluminium supported catalyst and a process for the manufacture of cumene using it
IPC: C07C5/03
Filed: 1974-04-18
Abstract: 1463200 Cumene CHEMISCHE WERKE HULS AG 18 April 1974 [21 April 1973] 16923/74 Heading C5E [Also in Division B1] Cumene is produced by hydrogenation of alpha-methylstyrene at 60-160 C. using a catalyst comprising 5-12% wt. nickel on a kappa- and/or delta-alumina support containing 0À1-5% wt. alkali metal (calculated as the oxide) and which has been formed by a specified method (see Division B1). The hydrogenation may be carried out at 1 to 30 atm. pressure using as feed either pure alpha-methylstyrene or a crude cumene containing up to 20% wt. of alphamethylstyrene resulting from the manufacture of phenol by acid cleavage of cumene hydroperoxide. Other impurities which might be present in such a crude feed are up to 5% butylbenzene, approx. 4% ethylbenzene, <1% of each of cyclohexanol, acetone and isopropylcyclohexane and <0À1 % of sulphur and chlorine.
Patent GB-476944-A (GB)
Title: Improvements relating to the backrests or supports of chairs, seats, and the like
IPC: A47C7/44
Filed: 1936-06-18
Abstract: 476,944. Back rests. TAN - SAD CHAIR CO. (1931), Ltd., and GABB, A. H. June 18, 1936, No. 16940. [Class 52 (ii)] In a pivoted back-rest a, the pivot or pivots c<1> is or are enclosed by means of a cover plate c attached to the back-rest and provided with a slot or aperture c<3> for the supporting arm b. The back-rest may comprise a backing a<2> of plywood and a pad a<3> of rubber &c. covered with fabric or leather. The pivoting means may comprise a U-shaped bracket c<2> attached to the cover plate c, through which passes a spindle c<1> around which the flattened upper end of the supporting arm b is bent. The cover plate c is of bulbous or curved form and is attached to the backing a<2> by screws c'.
Patent GB-930249-A (GB)
Title: Hydraulic packings
Inventor: ENTWISTLE TOM AUSTIN
IPC: F16J15/32
Filed: 1961-05-10
Abstract: 930,249. Piston and stuffing-box packing. LEATHERS CO. (ALTRINCHAM) Ltd. April 27, 1962 [May 10, 1961], No. 16952/61. Classes 122 (1) and 122 (5). Hydraulic packing comprises a moulded element 10 of leather reinforced by a layer 10 of plastics material moulded on to one surface of the element. The plastics material may be polyvinyl chloride or nylon. In a modification the layer 10 is moulded on the outer surface of the leather element. In other modifications the invention is shown applied to U, V and hot packings.
Patent GB-572411-A (GB)
Title: Improvements in and relating to the separation of thorium and the rare-earth group from minerals
IPC: C22B59/00
Filed: 1940-11-28
Abstract: 572,411. Extracting thorium and rare earth metals. SODDY, F. Nov. 28, 1940, No. 17015. [Class 1 (iii)] In the treatment of minerals such as monazite sand with sulphuric acid, phosphoric acid or sulphuric acid enriched with phosphoric acid is added to the sulphuric acid or to the solution obtained to increase substantially the phosphoric acid in the system, whereby thorium is retained in solution when the rare earth metal sulphates crystallise out. The rare earth sulphates are washed free of thorium and phosphoric acid by dilute sulphuric acid, and the washings with the residual acid liquor concentrated to fuming or until all the thorium is precipitated. After separation of the thorium, the acid concentrate may be used to attack fresh mineral, a part being split off as a by-product and fresh sulphuric acid added to replace that used up. If the phosphoric acid content of the liquor becomes too high lanthanum tends to remain in solution with the thorium. The process may be carried out using an aqueous solution of the valuable constituents after separation of the residue not dissolved by the acid treatment, which may contain meso-thorium.
Patent GB-359881-A (GB)
Title: Improvements in or relating to jigger machines for the wet-treatment of webs of fabrics
IPC: D06B3/32
Filed: 1931-06-11
Abstract: <PICT:0359881/IV/1> An automatic reversing gear for jiggers for the wet treatment of webs of fabric is operated by a lever 5 pivoted on the winding drum 2 and adapted to engage a cam surface on a sleeve 3 connected to the reversing gear.  The trip rod 8, which allows the lever 5 to engage the sleeve 3 when the fabric is wound off the drum, comprises a flat rod resting on the drum and exchangeably connected to the lever 5.  The rods are provided in different lengths to correspond with different widths of the webs to be treated.  When the rod 8 is removed a plunger 10 carrying a finger 13 is pressed out by a spring 11 and locks the reversing gear.
Patent GB-958621-A (GB)
Title: Improvements relating to the manufacture of cigarettes
Inventor: HASLAM FRED
IPC: A24C5/60
Filed: 1962-05-03
Abstract: 958,621. Cigarette-making machines. BRITISH-AMERICAN TOBACCO CO. Ltd. April 22, 1963 [May 3, 1962], No. 17072/62. Heading A2C. Cigarettes 1 are fed in two parallel lines from a conveyer 2 on to the catcher band 3 of a cigarette making machine where they are subjected to the drying effect produced by electrodes 4, 5 of a dielectric heating device, the electrodes being arranged to cause greater drying in the centre than at the ends of the cigarettes. The electrodes 5 are adjustable in parallelism with the electrodes 4 by a bar 12 movement of which, through links 9 pivoted at 10 and hangers 7, causes the electrodes 5 to move from the full line to the dotted line position shown in Fig. 1. The movement of the bar 12 may be controlled by a servomotor in response to detection of the moisture content of the cigarettes before drying.
Patent GB-1037157-A (GB)
Title: Improvements in or relating to tilting rolls for venetian blinds
IPC: E06B9/322
Filed: 1965-04-22
Abstract: 1,037,157. Venetian blinds. HUNTER DOUGLAS INTERNATIONAL Ltd. April 22, 1965 [April 23, 1964], No. 17089/65. Heading E1J. In a Venetian blind the tilting control roll 1 to which the ends of the tilting tapes 4 are secured by tongues 2, 3, is provided with circumferential ribs 6, 7 pressed out on the surface of the roll to protect the tapes located between the ribs from rubbing by the control cords 5.
Patent GB-170905-A (GB)
Abstract: 170,905. Robertson, C. J. W. July 6, 1920. Gates and gate-posts.-A gate is mounted so as to swing in the usual horizontal manner, and also from a normally vertical position into a horizontal position about a lower pivotal axis when pressed against by a motor-vehicle, weights returning the gate to the vertical position when the pressure is removed. In the arrangement shown the gate 7 is mounted so as to have the usual swinging movement about a vertical member such as the post or rod 20. The member 20 has a horizontal portion 22 which is mounted in bearing-members 23 and has a depending arm 12 with a loop 14 engaged by the roller 15 of a weight 18. When a motor vehicle is forced against the gate the gate and post 20 are forced into a horizontal position so as to allow the vehicle to pass over the gate, the weight then returning it to the normal position. The gate may be swung about the hinge post 20 when lifted out of the retaining member 24 to allow a horsed vehicle &c. to pass through. The upright extension 10 is provided to prevent the gate closing until the rear wheels of the vehicle have passed over it.
Patent GB-111670-A (GB)
Title: Improvements in Differential Mechanism.
Inventor: LEWIS FRANK MARSHALL
Filed: 1917-11-20
Abstract: 111,670. Lewis, F. M. Nov. 20, 1916, [Convention date]. Differential or balance gearing.-In bevel epicyclic balance gearing for motor-vehicles. &c., a freely mounted cylindrical casing 34 with bevel sides is arranged within the driving planet-wheels 20 and the driven bevel-wheels 12, 13 on the road-wheel axles 10, 11. Pairs of toothed segments 37, 38 sliding in slots in the cylinder are pressed by springs 45 into engagement with the inner ends of the teeth on the wheels 12, 13 and have cam-recesses 40 surrounding a cross-pin 35, which has its ends secured to the cylinder. Slots 47 in the segments 37, 38 accommodate spring- pressed pins 50 also engaging the bevel-wheels. Pins 43 and slots 44 in the segments permit such relative movement as to disengage the segments from one bevel-wheel at a time. The segments 37, 38 and pins 50 tend to prevent racing of either road-wheel on a slippery surface.
Patent GB-1006790-A (GB)
Title: New thiamine derivatives and the preparation thereof
IPC: C07D415/00
Filed: 1964-04-24
Abstract: The invention comprises thiamine derivatives of formula <FORM:1006790/C2/1> where R is hydrogen, a carboxylic acid acyl group containing up to 7 carbon atoms, an alkoxycarbonyl group containing up to 7 carbon atoms, or a phosphono group, and A is a saturated or unsaturated alkylene group containing 4 to 20 carbon atoms.  The compounds are prepared by reacting thiamine or an O-ester thereof at a non-acidic pH with a compound of formula X-S-A-S-X where X is -SO3M, -SO2R1, -SOR1, -SCN or a halogen atom, M is an alkali metal or one valency of an alkaline earth metal and R1 is a hydrocarbon residue having up to seven carbon atoms.  Compounds prepared in examples are decamethylene - 1,10 - bis - (thiamine disulphide), pentamethylene - 1,5 - bis - (thiamine disulphide, octamethylene - 1,8 - bis-(thiamine disulphide), hexamethylene - 1,6-bis - (thiamine disulphide), hexamethylene - 1,6-bis - (thiamine disulphide), hept - 2 - enylene-1,7 - bis - (thiamine disulphide), hexamethylene - 1,6 - bis - (acethythiamine disulphide), hexamethylene - 1,6 - bis - (ethoxycarbonyl-thiamine disulphide), hexamethylene - 1,6-bis - (propionoylthiamine disulphide), hexamethylene - 1,6 - bis - (benzoylthiamine disulphide), octamethylene - 1,8 - bis - (ethoxycarbonylthiamine disulphide), octamethylene-1,8 - bis - (acetylthiamine disulphide), octamethylene - 1,8 - bis - (propionylthiamine disulphide), octamethylene - 1,8 - bis - (benzoylthiamine disulphide), decamethylene - 1,10 - bis-(acetylthiamine disulphide), oct - 2 - enylene-1,8 - bis - (thiamine disulphide) and octamethylene - 1,8 - bis - (formylthiamine disulphide).
Patent GB-259318-A (GB)
Title: Improvements in free-wheel hubs with back-pedalling brakes
IPC: B62L5/02
Filed: 1925-07-11
Abstract: 259,318. Hanel, F. July 11, 1925. Back-pedalling brake and free-wheel arrangements.-In hub mechanism wherein the chain sprocket e engages a clamping ring g by means of a screw thread and is coupled to the wheel hub by means of conical friction surfaces d<1>, d, the outer friction surface d' is arranged within the chain sprocket itself and the sprocket is arranged between the hub cone d and a flange b on the hub. The nut c, screwed on to the hub, holds the several parts together, including a brake ring l which is held against rotation by an arm m and is formed with teeth i which engage resilient one way teeth on the screwed clamping ring g so as to prevent its backward rotation. A spring ring h tends frictionallv to resist relative rotation of the nut c and the ring g. During forward pedalling, the conical surfaces d, d<1> are engaged and the clamping ring g is moved to the left until it engages a shoulder n' on the part d. By back pedalling, the sprocket e and the ring g are forced apart so that the sprocket engages the flange b and the nut c engages the brake ring l.
Patent GB-1517041-A (GB)
Title: Amplifier suitable for use as a colour kinescope driver
IPC: H04N9/64
Filed: 1975-08-27
Abstract: 1517041 Colour television RCA CORPORATION 27 Aug 1975 [25 April 1975] 17249/75 Heading H4F  Amplifier arrangements for a colour television receiver are designed to prevent brightness variations and colour imbalance in the reproduced image due to variations in the operating conditions of the chrominance signal amplifying stages e.g. supply voltage variations. As shown a matrix unit 100 and CRT driver circuit 199 are provided for each chrominance channel, the luminance signal Y being applied directly to summing transistor 102 and the chrominance signal (e.g. R-Y) being applied via capacitor 110 to the same transistor, the resulting output R being DC coupled to modulate one beam of the display CRT 153. A stabilized reference voltage from temperature compensated voltage reference 169 is fed to a voltage comparator 168 together with a direct voltage proportional to the direct voltage fed to the display CRT e.g. from black DC level setting potentiometer 167, and this comparator is rendered operative during the horizontal retrace intervals by applying horizontal blanking pulses thereto from source 151. A current converter 180 e.g. a current mirror circuit, is coupled to the comparator 168 (differential amplifier) and to the capacitor 110, for charging and discharging the capacitor to a direct voltage level in relation to the difference in voltage between the two inputs of the comparator so as to counteract any changes in voltage developed at the input to the CRT e.g. due to supply voltage B variations at resistor 165<SP>1</SP>. The circuit also includes a differential amplifier 162 to one input of which a capacitor 120' is coupled, this capacitor being connected to the CRT via potentiometer 174 (allows AC gain adjustment), and being selectively charged during the horizontal retrace intervals. Transistor 108 is rendered conductive during the horizontal retrace intervals. The capacitors 110 and 120' are selected to have equal discharging rates during the time intervals between the horizontal retrace intervals. A cascade amplifier 164 is coupled between the output of the differential amplifier 162 and the CRT.
Patent GB-173425-A (GB)
Abstract: 173,425. Guy, F. E. Dec. 21, 1920. Adding and subtracting apparatus; full-stroke mechanism. -In machines of the cam-disc and pin-wheel type, in which the discs may be re-set by means of a swinging bail provided with a secondary bar movable into and out of effective position for engaging the ears on the cam-discs, the bail is disposed within the machine casing and the bar is moved into operative position by a cam action when the bail is swung. In the form shown in Figs. 3 and 5, the secondary bar f pivoted at f<1> to the bail e<1> is normally maintained by a spring g<2> in ineffective position, but when the re-setting-lever i is operated, a cam surface i<2> thereon presses against the arm g attached to the bar and causes the latter to assume its effective position, as shown in Fig. 3. The bail is returned to normal position by a coiled spring which passes around a grooved guide and is secured at its ends to the frame and bail. A full-stroke pawl j co-operating with a toothed surface j<2> is mounted on the resetting-lever i. In the modification shown in Fig. 6, the pivoted bar f is moved into effective position by engagement of its arm f<2> with a camguide k<2>, the re-setting-lever i in this case being part of the bail e. In order to reinforce the cam discs at the part carrying the ear, conveniently placed near the outer portion of the cam groove, the disc is increased in radius at that part as shown at b<2>.
Patent GB-269020-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F5/10
Filed: 1926-07-12
Abstract: 269,020. Lemons, G. G. July 12, 1926. Tobacco pipes - In a tobacco pipe of the type provided with air passages c through the bowl and a cap or cover f, the cap is fitted with an absorbent disc and secured by a bayonet catch i. The bores c may communicate at their lower ends with transverse bores opening on the outside of the bowl and fitted with ornamental eyelets, or they may communicate with an open channel formed around the lower part of the bowl.