baber/WOPTO huggingface dataset:
Patent GB-120921-A (GB)
Title: Improvements in or relating to Gas-analysing Apparatus.
IPC: G01N7/02
Filed: 1918-11-20
Abstract: 120,921. Aktiebolaget Ingeniorsfirma F. Egnell. Nov. 29, 1917, [Convention date]. Gas analysis.-The determination of the zero point in gas-analysis apparatus is effected by arranging a by-pass between the first and second measuring-vessels so that gas may be passed to the second vessel without passing through the absorbent. Fig. 1<a> shows such an arrangement, the by-pass a being placed between the measuring- vessels M<1>, M<2> so that the gas need not pass through the absorber A'. When the determination of the zero point is to be made, the cock b on the by-pass is opened, the gas passing through the by-pass only owing to the resistance of the liquid in the vessel A<1>; or a cock c may be employed to shut off the passage through the absorbent. A similar arrangement is shown in Fig. 3<a>, where there is a second absorber A<2>. When the apparatus is in use for gas analysis, the cock b is closed and the cock c, if present, is opened.
Patent GB-403321-A (GB)
Title: Tuyere for shaft furnaces
IPC: C21B7/16
Filed: 1933-07-06
Abstract: 403,321. Tuyeres. VEREINIGTE STAHLWERKE AKT.-GES., 67, Breitestrasse, Dusaeldorf, Germany. July 6, 1933, No. 19157. Convention date, July 7, 1932. [Class 51 (i).] A rotatable tuyere 1, Fig. 1, for shaft furnaces has at one size of its nozzle a wedge shape inner projection 2. The inner wall 3 of the tuyere may be shortened opposite the projection 2 as shown in Fig. 3.
Patent GB-446144-A (GB)
Title: Improvements in fuel supply systems for internal combustion engines
IPC: F02B39/12
Filed: 1935-07-04
Abstract: 446,144. Spray carburetters; pumps. AUTO UNION AKT.-GES., 110, Scheffelstrasse, Chemnitz, Germany. July 4, 1935, No. 19164. Convention date, July 4, 1934. [Classes 7 (ii) and 7 (iii)] In a fuel supply system operating periodically with suction or supercharging, the induction manifold 1 is fed by a suction tube 2, provided with a Venturi 6 and fuel nozzle 8, and by a pressure pipe 3 in front of which is a compressor 4 provided with a separate suction pipe 5 in which are a Venturi 7 and fuel nozzle 9 ; the nozzles may be parts of separate carburetters or, as shown, be supplied by a single float chamber 10. The accelerator pedal 14 controls through extensible rods 12, 13 a throttle valve 11 in the suction tube 2 and in the latter part of its movement engages a spring-pressed abutment 29, displacement of which opens a valve 24 in an oil supply pipe to permit a piston 26 to throw in the clutch 28 of the compressor, and simultaneously opens a valve 32 past which fuel flows to the nozzle 9. The pressure built up by the compressor displaces a piston 17, connected to the pressure pipe 3, to close a valve 15 in the suction pipe 2 and open a valve 20 in the pipe 3.
Patent GB-1287025-A (GB)
Title: A photometer arrangement for observation instruments
IPC: G02B21/00
Filed: 1970-04-22
Abstract: 1287025 Optical apparatus CENTRALNE LABORATORIUM OPTYKI 22 April 1970 [2 May 1969] 19174/70 Heading G2J [Also in Division G1] A photometer arrangement enabling simultaneous observation of an object and of the diaphragm D, limiting the area being photo-metrically determined comprises means defining a main light path, polarizing beam-splitting means P, dividing the main path into an observation path and a measuring path carrying light beams mutually orthagonally polarized, the eye-piece S 5  being disposed in the observation path, and aperture D, being disposed in the measuring path, specular reflector means being disposed in at least one of the paths, and two phase retarders, are in each of the measurement and observation path, the arrangement being such that the observation image and the aperture image are mutually orthagonally polarized. As shown, the aperture is formed in a mirror, and filter F is provided prior to photo-electric  cell K. In an alternative embodiment Fig.2 (not shown), the aperture is not reflecting, but a second beam-splitter is provided behind the aperture, together with a lamp for illuminating the aperture. Polarizer P1 is provided in the eye-piece so that, by rotation, either of the mutually orthagonally polarized images may be varied in intensity.
Patent GB-596354-A (GB)
Title: Luminaires
IPC: F21V7/04
Filed: 1945-07-26
Abstract: 596,354. Trough shaped reflectors. HOLOPHANE, Ltd. (Holophane Co., Inc.). July 26, 1945, No. 19185. [Classes 75 (ii) and 75 (iv)] A lamp is provided with a reflector which effects the same redistribution of light as a specular metal reflector, the reflector being made of flat transparent elements ribbed either internally or externally and mirrored. The ribs which are provided where the surface of the trough departs from that of the metal reflector, shown in dotted lines 11, have their surfaces tipped relatively to the corresponding inner faces so that incident light is reflected in the same direction in which the metal reflector would have reflected it. The trough may be of polygonal-cross-section, Fig. 3 showing one with two sides, and Fig. 2 one with three sides in which light striking the side faces 14 is reflected across the vertical axis while light striking the upper face 13 is reflected laterally without impinging on the side faces. The reflectors are typically of glass, mirrored as at M, pressed flat and assembled in the desired position.
Patent GB-227064-A (GB)
Title: Improvements in & relating to screw propellers
IPC: B64C11/18
Filed: 1924-08-14
Abstract: 227,064. Salter, M. Aug. 14, 1924. Screw propellers.-The developed area of screw propeller blades G is obtained from the geometrical construction shown in Fig. 1, the blades being given a suitable twist, the angle at the root being 45‹. For use on fast aeroplanes two blades only would be used, but four or six blades mav be employed. For use on ships, one-sixth of the root portion only is used.
Patent GB-898354-A (GB)
Title: Electrophotographic process and products
IPC: G03G9/09
Filed: 1958-06-16
Abstract: 898,354. Printing processes. MIKROKOP1E G.m.b.H. June 16, 1958 [June 14, 1957; Nov. 15, 1957(2)], No. 19270/58. Class 100(2) [Also in Group XX] ' An electrostatic powder image on a photoconductive surface is transferred to a receiving sheet containing a compound with which. the powder reacts in the presence of moisture to give a coloured image. Thus the powder image may comprise N-pyrrolidino-thiocarbamate or N-piperidino-thiocarbamate and the transfer paper may be coated with ferric ammonium sulphate, the paper being moistened before contacting it with the powder image, or the powder image may comprise iron stearate which reacts with gallic acid in the transfer paper after the latter has been moistened with aqueous alcohol. Alternatively, the powder image may comprise a diazonium compound and the transfer paper may contain phloroglucinol, moistening of the transfer paper being effected with a solution of sodium chloride, sodium acetate and tartaric acid, or one of the reactants may be aniline or a derivative thereof and the other may be an oxidizing agent such as K 2 S 2 O 8  or K 2 Cr 2 O 7  and may include a catalyst such as VCl 5  or CuS0 4 . In Example 11, the powder image is of copper sulphate, lead nitrate or silver nitrate, and the transfer paper is soaked in sodium sulphide solution which is first dried and then moistened before transfer. Reference is also made to the use of an eosin image which will react with alkali in the transfer paper when the latter is moistened with acetone. Specifications 308,653 and 425,235 are referred to.
Patent GB-586771-A (GB)
Title: Improvements in and relating to grooved or tricked beds for sliding instruments
IPC: D04B15/00
Filed: 1944-10-07
Abstract: 586,771. Knitting - machines, BENTLEY ENGINEERING CO., Ltd., and BENTLEY, W. T. Oct. 7, 1944, No. 19289. [Class 74 (ii)] [Also in Group XXII] To receive the knitting needles or other sliding members in a flat or cylindrical bed 1, a broad groove 2 is cut wide enough to accommodate two or more trick walls or blades 3 and one spacer member 4 which may be used to wedge the trick walls in position. For a cylinder the blades 3 may be initially oversize in thickness and a light machining cutter of the required thickness passed between the blades to make the sides of the trick parallel to a plane which is radial to the cylinder axis. In another form blades of predetermined taper may be used ; alternatively blades which are corrugated may be employed, the corrugations increasing in depth towards the outer edge of each blade. The effective faces of the blades 3 are those of the crests 6a of the corrugations, and the reverse of a crest is a recess 6b.
Patent GB-951309-A (GB)
Title: Improvements in or relating to layers comprising chalcogenides
IPC: C09K11/88
Filed: 1960-06-01
Abstract: Coherent layers comprising the sulphides, selenides, or tellurides of zinc, cadmium, or mercury are prepared by rolling. The layers may be employed as optical filters or windows, or in photo-electric cells or image intensifiers in which case the layer is preferably heated, for example to 500 DEG  C., to increase its sensitivity. The layer is preferably less than 500 microns thick, for example 50 microns.  The material may be kept separate from the rollers by rolling it between metal sheets, from which it may in turn be kept separate by means of an organic fibrous material, such as paper, which may be removed from the layer formed by burning. Conveniently a block of the material may be wrapped in paper and inserted in a steel tube, which is then passed through the rollers. The joined edges of the resulting sheet may be ground off to enable the layer to be recovered from between the steel sheets so formed.
Patent GB-359999-A (GB)
Title: Method and apparatus for treating tobacco
IPC: A24B3/04
Filed: 1930-06-26
Abstract: 359,999. Conditioning tobacco. BAYUK CIGARS, Inc., 9th Street, Philadelphia, U.S.A.-(Assignees of Wurman, H. P. ; 135, Eastern Parkway, Brooklyn, New York, and Touton, R. D. ; 2331, North 58th Street, Philadelphia, both in U.S.A.) June 26, 1930, No. 19486. Convention date, Feb. 13. [Class 130.] Tobacco in hands supported from their butts alone is conditioned by exposure to a humid atmosphere of lower temperature than that of the atmosphere in which the tobacco is subsequently manufactured. The endless-band conveyer g is provided with a number of spring clips and holders p for the hands of tobacco. The conditioned air is distributed through pipes u placed over and above the top and bottom runs of the conveyer bands. The tobacco hands, which are opened and closed as they are alternately inverted, are further treated at w. Automatic means for varying the humidity of the air comprises roller m, Fig. 6, which is subjected to the weight of the hands and is counterbalanced by the weight 4 and controls a valve s in the air-supply conduit. Alternatively, a valve 5, Fig. 5, in the water-supply pipe is controlled by solenoids 8, 9 in circuits which are opened and closed by a balanced lever 13 one arm of which carries a hand of tobacco the weight of which varies in accordance with the humidity of the chamber in which the tobacco is conditioned. The temperature of the conditioning room is about 65‹ F. compared with 70‹ F. in the manufacturing room.
Patent GB-1199866-A (GB)
Title: Electric Knife
IPC: H01H21/10
Filed: 1968-04-24
Abstract: 1,199,866. Cutting tools. SUNBEAM CORP. 24 April, 1968 [10 July, 1967], No. 19500/68. Heading B4B. [Also in Division H1] ] An electric knife comprises a housing enclosing a motor 14 and means 22 coupled to the motor for reciprocating holders 19 for the blades 12, the motor being energizable by a switch which is actuatable by means of a manually operable spring-influenced trigger 29 pivotally mounted in the housing. The housing comprises lower and upper members 15, 16 which co-operate to form a motor chamber 17 and a switch chamber 18. A lengthwise movable plunger 55, Fig. 8, in one of its positions restrains the trigger from pivoting and in the other of its positions allows the trigger to pivot. The plunger has a rounded projection 60 which engages one of two notches 61 to retain the plunger in each of its positions. Fingers 63 extending from the trigger overlie the plunger when it is in its locking position but align with notches 64 when the plunger is moved to allow the trigger to pivot. The switch comprises fixed and movable contacts 38, 39 enclosed in a cuplike cover member 30 which forms one of the legs of the trigger. The contacts are carried by a support 35 integral with the rear tubular guide 34 for the blade holders 19.
Patent GB-840529-A (GB)
Title: Improvements in or relating to combustion equipment of gas turbine engines
Inventor: JANES RALPH
IPC: F02C7/22
Filed: 1957-06-20
Abstract: 840,529. Liquid fuel burners. ROLLSROYCE Ltd. June 20, 1958 [June 20, 1957], No. 19519/57. Class 75(1). [Also in Group XII] In gas turbine engine combustion equipment of the kind comprising an annular flame tube disposed within an annular air casing, a mixture of air and fuel is discharged into the flame tube through an annular burner device shown in Fig. 3. The burner comprises a pair of radiallyspaced ring members 38 which are shaped to provide an annular convergent-divergent passage 38a, 38b open at its upstream end. Fuel is supplied to the inlet end of the passage through openings 37 in a pair of fuel manifolds 35 and the mixture of fuel and air issues into the combustion space through slots in the inner and outer walls of a channel-section ring member 41 which is secured at the downstream end of the members 38. The ring members 38 are spaced apart by means of faired struts extending radially therethrough. Fuel is supplied to the manifolds 35 from the ring manifold 32 through radial pipes 30 which are connected at their inner ends to unions 34 having two pairs of limbs 34a, 34b, adjacent unions being interconnected by pairs of part-circular pipes 35. Fuel flows from one union 34 to a pair of tubes 35 on either side of it, the other pair of tubes 35 on either side of that union receiving fuel from the adjacent unions 34.
Patent GB-1461592-A (GB)
Title: Specially sensitized direct positive silver halide emulsions
IPC: C07D513/04
Filed: 1973-04-25
Abstract: 1461592 Heterocyclic methine dyes AGFAGEVAERT 9 April 1974 [25 April 1973] 19616/73 Heading C4P [Also in Division G2] Dimethine dyes are disclosed of the general formula where Q is a group of the formula wherein each of R 1 , R 2 , R 3  and R 4  is H or substituted or unsubstituted alkyl or aryl or R 1  with R 2  and/or R 3  with R 4  forms a fused-on heterocyclic ring, each of L 1 , L 2 , L 3  or L 4  is methine or substituted methine, each of m and n is 0 or 1, R 5  is substituted or unsubstituted alkyl, aralkyl, allyl, cycloalkyl or aryl, X is an anion and Z completes a heterocyclic ring. The dyes spectrally sensitize direct-positive photographic silver halide emulsions.
Patent GB-1186522-A (GB)
Title: Production of Anosovite from Titaniferous Minerals
IPC: C22B34/12
Filed: 1967-04-28
Abstract: 1,186,522. Extracting iron. COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION and WESTERN TITANIUM N. L. April 28, 1967 [April 29, 1966], No.19648/67. Heading C7D. [Also in Division C1 Granular ilmerite, iron-containing rutile and materials formed from these by weathering are heated with a magnesium compound to coat the granules (see Division C1) and prevent agglomeration of the granules during subsequent reduction at 1130-1320C. in a rotory kiln using 1 part by weight of carbon per 1-2 parts of granules. Sodium chloride or sodium sulphate can be added during the reduction to facilitate the separation of the  metallic iron and anosovite phases formed by the reduction.
Patent GB-648646-A (GB)
Title: Improvements in or relating to sliding doors and the like
IPC: E06B3/44
Filed: 1948-07-22
Abstract: 648,646. Door operating appliances. KING, Ltd., G. W. and BURROWS, A. T. C. July 22: 1948, No. 19650. [Class 65(i)] [Also in Group X] A vertically slidable door 10 is connected by a cable 16, passing around rollers 17, 18, to a counterweight 19 approximately equal to the weight of the door, and means are provided both for imparting an upward or downward movement to the counterweight as well as for supporting' the latter independently of the cable at a point in its upward movement corresponding to the closed position of the door. The door travels on rollers 13, 14 in guides 11, the lower ends of which are so curved as to displace the door, in its closed position, against a sealing gasket attached to the frame. The counterweight travels on rollers 20 in guides 21 and is adapted to be supported by the lower pair of said rollers upon a shelf at the top of its travel, the upper ends of the guides 21 being curved to provide the necessary lateral displacement for this purpose. The counterweight is driven by a motor 22 through a cable 25 which passes around pulleys 24, 26, 27. The ends of said cable are connected to the lower arms 32 of a bell-crank lever system, the upper arms 29 of which are pivoted to the counterweight, and the pivot 31 of which is provided with rollers which travel in the guides 21. The initial movement of the cable 25 to move the counterweight downwardly thus serves to dislodge the latter from its supporting shelf. It is stated that the door will rebound from the sealing gasket to cause slackening of the supporting cable, thus enabling the door to press against the gasket under the action of its own weight.
Patent GB-920283-A (GB)
Title: Machine for grinding round or square bar material
Inventor: NICOLAI EBERHARD
IPC: B23Q7/16
Filed: 1960-06-03
Abstract: 920,283. Hydraulic apparatus. VEB KONSTRUKTIONSBURO FUR SCHWERMASCHINENBAU MAGDEBURG. June 3, 1960, No. 19744/60. Class 69 (2). [Also in Group XXIII] Hydraulic means for exerting grinding pressure on a grinding wheel in a machine for grinding bars (see Group XXIII) comprises a piston 20 which is connected with a counterweighted lever 10 carrying the grinding wheel 2 and moved upwardly in a cylinder 34 against the action of a spring 27 by means of hydraulic fluid supplied by a gear pump 21. A control valve 23 regulates the pressure with which the grinding wheel is applied to the bar and a device 28 permits adjustment of the spring.
Patent GB-585065-A (GB)
Title: Improvements in or relating to aqueous dispersions of rubber or the like
IPC: C08L21/02
Filed: 1944-10-14
Abstract: An aqueous dispersion of rubber or the like (preferably reclaimed rubber, but including rubber-like synthetic materials) contains a metallic salt of naphthenic or rosin acids, the latter being incorporated with the rubber before the dispersion of the rubber in the aqueous medium, e.g., according to the process set forth in Specification 579,352.  Zinc or iron naphthenate is preferred, the amount used preferably being between 0.5 and 4 per cent. of the former, or less than 0.5 per cent. of the latter. The product has adhesive properties, and may be used in a coating composition.ALSO:An aqueous dispersion of rubber or the like (preferably reclaimed rubber but including rubber-like synthetic materials) contain a metallic salt of naphthanic or rosin acids, the latter being incorporated with the rubber before the dispersion of the rubber in the aqueous medium, e.g., according to the process set forth in Specification 579,352, [Group III].  Zinc or iron naphthenate is preferred, the amount used preferably being between 0.5 and 4.0 per cent. of the former, or less than 0.5 per cent. of the latter.  In an example, reclaimed rubber is mixed first with stearin wax and zinc naphthenate, then alumina and Castile soap. 1 per cent. caustic soda solution is slowly added until phase inversion takes place when a casein in borax solution is added as a stabilizer.  The product has adhesive properties.
Patent GB-606570-A (GB)
Title: An improved air-operated grease gun
IPC: F16N5/02
Filed: 1945-08-02
Abstract: 606,570. Grease guns. SCOVELL, E. H. Aug. 2, 1945, No. 19921. Convention date, May 14. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 15, 1946.] [Classes 102 (i) and 102 (ii)] The pump plunger 1 of an air-operated grease gun is displaced along its barrel 20 by a piston 2, operated by air introduced into the cylinder 4 thereof through a slide valve 7 automatically reversed by the plunger at the end of its strokes to permit a spring 5 to return the piston, the plunger on its power stroke expelling grease which has been forced up from a container 40 by air fed thereinto below a piston 55 by an axial tube 46 therein communicating with a supply passage 6 for both the cylinders 4, 40; the supply is controlled by a triggeractuated ball-valve 35. Springs 13, 14 on an extension of the plunger 1, a spring-pressed ball 10, and grooves 8, 9 in the valve, effect its reversal by a snap action. A screwed boss 48, detachably secures the container 40 and the tube 46 to the body of the gun.
Patent GB-1044381-A (GB)
Title: Battery separators containing phenol-aldehyde resin compositions
IPC: H01M2/16
Filed: 1963-05-20
Abstract: 1,044,381. Battery separators. MONSANTO CHEMICAL CO. May 20, 1963 [May 21, 1962], No. 19978/63. Heading H1B. A battery separator contains the ingredients of a resin composition comprising a phenolaldehyde resin and a surface-active agent which is an addition product of ethylene oxide and/or propylene oxide with a compound containing at least two hydrogen atoms bonded to nitrogen. The composition may be incorporated as such or the ingredients thereof may be incorporated successively. The resin may then be cured in situ. Exemplified battery separators are those made of fibrous cellulosic material, glass fibre, diatomaceous earth, polyvinyl chloride and hard rubber. Specified resins are phenol-, resorcinol-, catechol-, cresol- and xylenol-formaldehyde, and phenol-acetaldehyde or -butyraldehyde resins. They may be novolacs or resoles. The surfaceactive agents are described by reference to U.S.A. Specification 2,979,528. The separators are stated to be particularly suited to so-called " dry charge " lead-acid batteries.
Patent GB-1210066-A (GB)
Title: Improvements in or relating to mats or curtains for affording protective screens in mining operations or for like purposes or for providing portable road or track surfaces
Inventor: SHAW ARTHUR HENRY
IPC: E01C9/08
Filed: 1967-05-01
Abstract: 1,210,066. Mats. A. H. SHAW. 25 April, 1968 [1 May, 1967], No. 20002/67. Heading A4S. [Also in Division E1] A mat for use in mining operations or for providing a temporary roadway consists of parallel, hollow, elongated members 1 formed from a plastics material, e.g. polythene, and connected together by flexible means 5, e.g. wire, cable or chain, that extend transversely through the members, which are also connected together by similar flexible means 8 extending longitudinally through the members in succession. The emergent loops of the means 5 may be adapted to form handles 7.
Patent GB-439985-A (GB)
Title: Improvements in appliances for playing games
IPC: A63H33/18
Filed: 1934-07-09
Abstract: 439,985. Quoits. ALLWOOD, J. H., 16, Midland Avenue, Nottingham. July 9, 1934, No. 20093. [Class 132 (ii)] A ring or quoi+ 1, of rubber leather or like flex ible or resilient ma terial, is provided with metal or other relatively hard projecting elements 2 spaced circumferentially and on opposite sides thereof, to prevent suction &c. effects when used with a mechanical projector, for example, as described in Specification 415,463. As shown, the projections 2 comprise the rounded heads of metal pins 3 pressed through the ring, but pins having heads at one end only may be used. Again the projections may be moulded integral with the ring and hardened by vulcanization or other treatment. According to the Provisional Specification the projections may be provided on one side only of the ring.