baber/WOPTO huggingface dataset:
Patent GB-981481-A (GB)
Title: Improvements in or relating to electroplating
Inventor: DEYRUP ALDEN JOHNSON
IPC: C25D3/10
Filed: 1961-08-28
Abstract: An aqueous bath for electrodeposition of bright chromium plate comprises: divalent chromium salt 0.1-2 gm. moles/litre; formic acid and/or glycollic acid 0.3-1 gm. moles/litre; alkali metal salt of formic acid, glycollic acid or an acid 0.3-4 gm. moles/litre having a dissociation constant of at least 1X10-2 (e.g. HCl or H2SO4); and has a pH of 1.7-4.5. In preferred solutions boric acid is added (0-3 gm. moles/litre) with a fluoride (0-5 gm. moles/litre). The bath may be operated at room temperature up to 90  DEG C., at 20-450 amps/sq.ft. with an inert anode (e.g. carbon or graphite) and a metallic cathode. An inert gas blanket may be maintained above the bath to inhibit oxidation of the Cr++ compounds, and a wetting agent may be added to promote frothing which has a similar protective effect.  The chromium may be plated on brass which can then be removed with nitric acid to give a high tensile strength foil.  The foil may be baked, before or after the removal of the brass, at a temperature of 200-350  DEG C. for a period of from a few seconds up to one hour.  U.S.A. Specifications 2,823,095, 2,996,353 and 3,088,801 are referred to.
Patent GB-1214795-A (GB)
Title: Meter with small tilt error
IPC: F16C39/06
Filed: 1969-06-19
Abstract: 1,214,795. Bearings. WESTINGHOUSE ELECTRIC CORP. 19 June, 1969 [22 July, 1968], No. 30991/69. Heading F2A. The rotor assembly 15 of a watt-hour meter comprises bearing bushes 39, 47 having a matrix of an aromatic polyimide resin, and a fluorocarbon polymer filler in the matrix. The filler is preferably PTFE. The fixed axles 41, 49 are of stainless steel, chrome, or beryllium copper. The axial thrust bearing comprises barium ferrite magnets 53, 55.
Patent GB-272776-A (GB)
Title: Improvements in mechanism for opening and closing taps or electric switches at predetermined times
IPC: G04C23/24
Filed: 1926-12-08
Abstract: 272,776. Gunning, J. Dec. S, 1926. Clockwork actuation.-A spring- or motordriven spindle M‹, the step-by-step rotation of which moves a switch or valve alternately "on" and " off, " has mounted on it a disc O carrying four spring-pressed latches P which project in turned in a gap Q‹ in a fixed ring Q, thereby preventing rotation of the spindle M‹, till at a predetermined time the latch P is depressed by a clockwork-driven " on " or " off " tappet H or H<1>. Two of the latches P carry short pins p<1> and the other two latches carry long pins P<2>, and the one tappet H is so arranged that it engages the long pins P<2> only. Immediately after the disc 0 has been released, the pin of the succeeding latch comes into temporary engagement with the rear face of the tappet, this forming an additional safeguard to prevent overrunning of the spindle M‹. The timing tappets H, H<1> and the timing dial G are adjustably secured upon a sleeve D which is rigid with the hour wheel E, and the sleeve D forms a bearing for the winding arbor C of the clock. The spindle M‹ may carry a bridging contact arm or a cam which acts to raise and lower a pivoted arm dipping into mercury contacts, and it may be coupled to a rotary gas valve.
Patent GB-208536-A (GB)
Title: Improvements in carburetters for internal combustion engines
IPC: F02M19/12
Filed: 1923-12-12
Abstract: 208,536. Girin, A. Dec. 12, 1922, [Convention date]. Float valves.- The Specification as open to inspection under Sect. 91 (3) (a) comprises the following subject-matter. In order to maintain a constant head of fuel when a spray carburettor is tilted, two floats D, Fig. 1 (Cancelled) are mounted on a member J having arms K, pivoted at L, and arms M with a forked end M<1> coopearting with flanges on the fuel-valve rod P. The floats, which may be of lenticular, ellipsoidal or like shape, are arranged in chambers which communicate with wells I, F by passages E, E<1>, the fuel nozzle B being symmetrical with respect to all the fuel reservoirs. Nuts U having varying weights enable the forked end M<1> to be brought into line with the pivot L and the nozzle B, which are at normal fuel level. The fuel valve 0 is guided by a fluted extension T. This subject-matter does not appear in the Specification as accepted.
Patent GB-1036757-A (GB)
Title: Digital ultrasonic delay line
IPC: H03H9/36
Filed: 1963-08-07
Abstract: 1,036,757. Ultrasonic delay lines. CORNING GLASS WORKS. Aug. 7, 1963 [Aug. 15, 1962], No. 31179/63. Heading H3U. A delay line comprises a flat plate having reflecting surfaces, signal input and output transducers for vibration in a thickness-shear mode parallel to the major planes of the plate, and acoustic absorbers mounted on the transducers and having mechanical impedances matching the transducers, the widths of each of the transducers and the absorbers being equal to the thickness of the plate, and the lengths equal to each other. The various surfaces of the plate may each be polished. The reflection facets are so positioned that the signal strike angles are greater than the critical angle of the medium, and preferably are 45 degrees. The piezo-electric transducers may be crystalline quartz, barium titanate, potassium sodium niobate or mixtures of lead zirconate and lead titanate, and the absorbers may be made of lead, tin, or preferably a 60-40 indium-tin alloy. The delay line may be formed of fused silica, or alkali-lead-silicate glass.
Patent GB-117064-A (GB)
Title: Improvements in Bomb Throwers and Bombs to be Thrown thereby.
Inventor: PIERSANTELLI EMILIO
IPC: F41C27/06
Filed: 1918-02-21
Abstract: 117,064. Piersantelli, E. June 23, 1917, [Convention date]. Bomb-throwing, guns adapted for; firing- appliances; m u z z l e - loading; stocks. - Consists of (1) a bombthrower comprising a stock formed with a crescent-shaped butt, adapted to rest on the ground or against the shoulder, and a barrel adapted to receive a socket on the bomb and provided with a central firing-pin, and (2) a bomb therefor having at the rear a hollow socket fitting in the barrel and provided with a sleeve adapted to receive a rifle cartridge which constitutes the propelling charge. In the construction shown in Figs. 1 and 4, the crescent-shaped butt stock 3 is provided with iron points 4. The firing-mechanism comprises a sliding firing pin 5, a vertically sliding sear 11 which is cperated by a wedge 13, and a star trigger 6 adapted to retract the wedge 13 by means of the lever 16 and connecting-rod 14. The bomb 24 is provided with a socket 22 fitting in the barrel 2, and is formed with a rearwardly extending sleeve 21 in which a rifle cartridge 20 is placed. When the cartridge is fired by the firing- pin 5, the bullet ignites the fuse 23 and the powder gases pass out through openings 21<1> in the socket 22 and propel the bomb and also re-cock the firing-pin. In a modification, Fig. 5, the firing-pin has a tail-piece 5<11> adapted to be held by three hooked sears 25 which are actuated by a sliding central plug 26 operated from the trigger.
Patent GB-1508194-A (GB)
Title: Railway vehicles and bogies
IPC: B61F5/38
Filed: 1975-07-25
Abstract: 1508194 Railway vehicle undercarriages BRITISH RAILWAYS BOARD 19 July 1976 [25 July 1975] 31214/75 Addition to 1179723 Heading B7L To optimize steering and stability in a railway vehicle or bogie having three or more wheelsets, non-load bearing elastic bracing means, such as struts including sections of resilient material, fluid springs or arrangements incorporating torque tubes, are provided between the axle bearings of adjacent pairs of wheelsets (broken lines) and at least one pair of non-adjacent wheelsets (full lines). The construction of the bracing means is as described in parent Specification.
Patent GB-682491-A (GB)
Title: Improvements in chucking mechanism for a tapping machine
IPC: B23G1/16
Filed: 1950-12-22
Abstract: 682,491. Tapping machines. GRINNELL CORPORATION. Dec. 22, 1950 [Dec. 28, 1949], No. 31218/50. Class 83 (iii). A tapping machine for pipe fittings is provided with chucking mechanism comprising a movable shaft; pressure-actuated means for moving the shaft to and fro relative to the cutting tools; a forward and a rearward jaw member mounted on the shaft and movable therealong; means for moving said jaw members with respect to one another for engaging a workpiece; means, including a hub on the shaft, for engaging the forward jaw member to effect movement of the jaw and the work rearwardly with said shaft, and centring means mounted on the frame of the machine and engageable by the rearward jaw for accurately positioning the work relative to the cutting tools. The machine comprises a base 10 on which three tapping heads 12, 14 and 16, Figs. 3 and 4, are arranged to operate on a T-shaped pipe fitting F. The latter is gripped initially between jaws 80, 82, Fig. 5, of a workholding device operated by a hand lever 72a which moves the jaw 82 through toggle links 72, 74. The jaws are supported on blocks 40, 42, splined on a shaft 38 and the blocks are normally urged together by tension springs 76. The forward motion of the block 40 is limited by stop nuts 66. The shaft 38 is capable of a limited rotative movement and extends rearwardly within a cylinder 24, Fig. 3, and carries a piston 36 at its rearward end. After the initial hand tightening air is applied to piston 36 under control of a pedal 30 and the shaft 38 is moved to the left. The work holding- device moves with the shaft and finally a conically-ended fixed stop 78, Fig. 5, engages a vertical V-groove 40a in the rear face of the block 40 to centralize the block and shaft and to effect final tightening of the clamping jaws on the work. A subsidiary piston 38a, Fig. 3, on the shaft 38 moving within a cylinder 50 serves to suck oil from a sump in the driving- gear housing 48 and spray it out from a nozzle 64 to lubricate the gears on jaw-release movement of the shaft.
Patent GB-757861-A (GB)
Title: Disc mill
IPC: D21D1/30
Filed: 1954-10-28
Abstract: 757,861. Disc mills. BAUER BROS. CO. Oct. 28, 1954 [Oct. 29, 1953], No. 31219/54. Class 59. [Also in Group XXVI] In a disc mill comprising a pair of relatively rotatable grinding discs 13, 14 carrying face plates 15, 16 respectively, and in which the disc 14 is secured to a rotatable shaft 23 mounted on spaced-apart bearing supports 12 provided in a fixed housing 11, the disc 13 is connected, through an adapter 36, with a tubular sleeve 28 supported in the housing 11 and clamped thereto by means of a releasable clamping member 37. Material to be treated is supplied through an inlet 19 and the treated material passes into a chamber 18 having an outlet tube 21. The chamber 18 is formed in part by a ring 43 which is secured in position by releasable tie members 47. The shaft 23 is connected to a thrust bearing and piston assembly 49 movable in a hydraulic chamber 56. A screw post 61 defines the limit of movement of the assembly 49 in one direction. In defining the initial position of adjustment of the discs 13, 14, the post 61 is retracted out of operational position. Pressure fluid is then admitted to the right hand side of the chamber 56 to move the piston assembly 49 and shaft 23 to the left until the face plate 16 contacts the face plate 15. The post 61 is then advanced to engage a plate 53 forming part of the piston assembly 49. To set the plates 15, 16 to a desired clearance, pressure fluid is admitted to the left-hand side of the chamber 56 to move the shaft 23 and disc 14 to the right. The post 61 is then advanced by the amount of the desired clearance and locked. Pressure fluid is then admitted to the right-hand side of the chamber 56 to move the piston assembly to the left until it is stopped by the plate 53 contacting the post 61. To provide access to the discs 13, 14, the tie members 47 are released and the ring 43 slid axially to the dotted line position shown. The clamping member 37 is then released which enables the sleeve 28 to be manually rotated in either direction to bring lowermost sectors of the plate 15 into the upper half of the housing 11 for easy removal.
Patent GB-365182-A (GB)
Title: Improvements in safes
IPC: E05G1/024
Filed: 1930-10-18
Abstract: 365,182. Safes. CHATWOOD SAFE CO., Ltd. and BRUCKSHAW, H. S., Harlescott, Shrewsbury, Shropshire.. Oct. 18, 1930, No. 31304. [Class 44.] In the construction of safes the outer case a is used in conjunction with a removable core to form the mould for casting the concrete &c. - lining in contact with the outer case, the latter having a gap or gaps b through which moisture escapes, from 'the drying concrete, and which are afterwards closed by..plates c. 'After removal of the inner core, the inner shell d is inserted, leaving preferably an air gap between it and the concrete for insulating purposes. The shell d may carry alum &c. containers e. In the form shown in Fig. 4, the covers are slidably mounted and have extended slides k to support them when they are open.
Patent GB-498091-A (GB)
Title: Improvements relating to the stropping or sharpening of razor blades
IPC: B24D15/08
Filed: 1937-11-15
Abstract: 498,091. Sharpening safety razor blades. BLELOCH, W. E. Nov. 15, 1937, No. 31305. [Class 60] In the sharpening of safety razor blades, the blade 6 is placed upon a support, shown as formed on a side of a box 1 adapted to contain a strop &c., consisting of a flat central portion 2 joined by oppositely inclined surfaces 3, 4 rounded at 5 where they merge into the surface 2. The ends of the surfaces 3, 4 provide shoulders 7 to guide a strop 8, which in operation lies on a surface 3 or 4 and also on a bevelled or rounded surface 16 on a clamping bar 10, which holds the blade 6 in position ; the bar 10 has finger grips 11 and is provided with two pins 12, which pass through holes in the blade and enter holes 9 in the side of the box. The strop 8 may comprise a core 17 of wood &c. covered with leather &c. 18 held by stitching or riveting 19 ; when applied to the support, the strop is drawn downwards across the blade edge, which is bent slightly over the surface 3 or 4.
Patent GB-1003972-A (GB)
Title: Fortified rosin size in form of an aqueous dispersion with high free rosin content
IPC: D21H17/62
Filed: 1961-08-31
Abstract: Paper size consists of an aqueous dispersion of fortified rosin (i.e. rosin reacted with a ,b -unsaturated acids such as maleic acid or derivatives thereof, e.g. anhydrides or nitriles; and containing 5-75% of adduct, the remainder being unchanged rosin) admixed with a fatty acid, fatty acid mixture from natural oils or fats, and/or a naphthenic acid, the mixture having a drop point below 110 DEG  C. Preferred fatty acids have 12-24 carbon atoms in the chain.  In Example 1, Mexican gum rosin is reacted with maleic anhydride and mixed with varying proportions of fatty acids or naphthenic acid. Example 2 is similar but uses a mixture of maleic anhydride and dehydrated citric acid. In Example 3, the rosin is mixed with sulphuric acid-refined tall oil having 40% fatty acid content, before being reacted with maleic anhydride. Specifications 335,902 and 859,787 are referred to.
Patent GB-965653-A (GB)
Title: Improvements in or relating to hydraulic jacks and installations employing such jacks
Inventor: FOWLER JOHN LAWRENCE
IPC: F15B11/12
Filed: 1959-09-15
Abstract: 965,653. Handling bulk cargo. FAIREY ENGINEERING Ltd. Dec. 15, 1960 [Sept. 15, 1959], No. 31434/59. Heading B7A. [Also in Divisions F1 and F2] A marine tanker has a hull 12 divided into compartments A1 . . . A11 by bulwarks 15, each compartment being divided by partitions 13, 14 into three sections. Liquid cargo is supplied by port and starboard pipes 16, 17 to compartments A1 . . . A5 and by similar pipes 17, 19 to compartments A6 . . . A11, the pipes being joined at junctions 20 which are controlled by stop valves 21. Pipes 24 extend between the pipes 16, 18 and 17, 19 across the compartments and have branches 25, 26, 27 leading to the sections. Stop valves 22, 29, 30 are provided to control the flow to each section and are actuated by hydraulic jacks 31 (see Division F1) remotely controlled by servovalves 32, the stop-valves being movable to open, closed, or intermediate positions. The servo-valves 32, and stop-cocks 74 for locking the jacks in adjusted positions, are disposed in a control room 76 remote from the jacks and stop valves, a pump 71, accumulator 70, intensifier 75 and reservoir 73 for supplying fluid pressure to the jacks being housed in a pump room 77 aft of the control room. Level indicators associated with each section are provided in the control room.
Patent GB-1476003-A (GB)
Title: Apparatus for developing exposed diazotype sheet material
IPC: G03D5/06
Filed: 1975-07-28
Abstract: 1476003 Coating apparatus DIAZIT CO Inc 28 July 1975 [10 Sept 1974] 31489/75 Heading B2L [Also in Division G2] Developing apparatus for exposed diazotype sheet material comprises an applicator roller 16 rotatable in a clockwise direction, means for supplying liquid developer to a surface area 44 of the roller 16, a metering blade assembly 40 including a fine mesh screen biased into direct contact with a portion of the roller surface for metering the developer, and a guide blade 22, downstream of the metering blade assembly for urging the sheet material into contact with the roller 16. The liquid developer is pumped from a reservoir 28 and forms a puddle 42 held by a tray 36. The fine mesh screen is carried by a resilient backing member mounted on a flexible support which is connected to a bracket 38 pivotable about 72, the force with which the screen is pressed against the roller being varied by adjusting the bracket. The mesh screen is made from a synthetic resin e.g. nylon or a metal e.g. stainless steel, and the mesh filaments may be perpendicular and parallel, or alterntively at 45‹, to the longitudinal axis of roller 16. The amount of developer deposited on the roller surface is determined by the mesh size, the force with which the blade is urged against the surface and the angle of the filaments. When the apparatus is not in use a relatively hard sheet 80 is positioned between the blades and resilient surface of the roller (dot-dash lines) to prevent unwanted depressions forming in the latter.
Patent GB-1114449-A (GB)
Title: Improvements relating to aircraft provided with a gas turbine vertical lift engine
Inventor: PIKE MALCOLM ROY
IPC: B64C29/00
Filed: 1965-07-23
Abstract: 1,114,449. Direct lift aircraft. ROLLS-ROYCE Ltd. 15 July, 1966 [23 July, 1965], No. 31602/65. Addition to 890,755. Heading B7G. An aircraft is provided with a gas-turbine vertical lift engine having an exhaust nozzle comprising an annular portion arranged to receive the turbine exhaust gases and a plurality of separate nozzle members which communicate with the annular portion and through which the exhaust gases are discharged as in the parent Specification 890,755, except that in addition either (a) the nozzle members 36 discharge the exhaust gases in a direction at an angle (e.g. 90 degrees) to the inlet axis, the nozzle being rotatable to deflect the thrust, or (b) the nozzle member cross-section is no longer circular but either elliptical, Fig. 4, or " multi-bubble," Fig. 5 (not shown). This gives a greater distance a between the nozzle members than that b between equivalent nozzle members 20<SP>1</SP> of circular cross-section with the same outlet area, thereby facilitating the flow therebetween of ambient air. The " multi-bubble " shape is said to assist silencing. There may be radial passages (46), Fig. 7 (not shown), through the annular portion of the exhaust nozzle to allow ambient air to be drawn into the core of the jet efflux.
Patent GB-1375497-A (GB)
IPC: B30B9/12
Filed: 1972-07-06
Abstract: 1375497 Screw extrusion presses FRENCH OIL MACHINERY CO 6 July 1972 [9 July 1971] 31611/72 Heading BID In a screw press, suitable for expressing moisture from sugar cane bagasse, comprising a cylindrical cage 10 through which extends a shaft on which are mounted a series of worms, only the last two worms 29, 30 at the discharge end of the press being shown in Fig. 1, the worms are separated by annular collars 36 and at least the last worm 30 has two or more helical flights uniformly disposed around the circumference of the body of the worm and passing through a common radial reference plane, each of the flights extending circumferentially for not more than 200. In the embodiment shown the last worm 30, which tapers outwardly towards the end of the press, has two flights 44 passing through a plane 45 (Fig. 3) perpendicular to the axis and extending over 170 of the circumference of the body 42 of the worm so that there is a 10 gap 46 between adjacent ends of the flights (Fig. 4). The cage comprises two semicylindrical sections 12 each having ribs on which are mounted bars 16 spaced to define longitudinally-extending slots through which liquid is expressed. Breaker bars 38 project inwardly into the cage between the worms. The residual pulp is forced out of the press through an orifice 75 between frusto-conical rings 60 and 70, and liquid is expressed through holes 76 in the latter, which is carried by a guide member 78 mounted on the non-rotatable piston rod 84 of a hydraulic cylinder 82 by which the size of the orifice 75 can be adjusted. The ring 70 may be withdrawn by the hydraulic cylinder and removed, and the cylinder may then be used, together with pullrods passed through holes in the member 78, to withdraw, in turn, collars 54 and the worms 30, 29 &c. and intermediate collars 36. The cylinder may also be used in the re-assembly of these parts.
Patent GB-1110325-A (GB)
Title: Packing and method of producing it
IPC: F16J15/10
Filed: 1965-07-26
Abstract: 1,110,325. Injection moulding. COMPAGNIE DU FILAGE DES METAUX ET DES JOINTS CURTY. 26 July, 1965 [28 July, 1964; 4 May, 1965], No. 31743/65. Heading B5A. [Also in Division F2] A moulding apparatus for moulding elastomeric ribs 4a, 4b on a gasket 1 (see Division F2) comprises die members 5, 6 having recesses corresponding in shape to the ribs and cylinders 10 connected by passages 8 to the recesses. The bottom die 6 is formed with pistons which  are adapted to enter cylinders 11 formed in a plate 13, bores 9 passing through the pistons and communicating with the recesses. An upper plate 12 is also provided with pistons which enter the cylinders 10 so that when the cylinders 10, 11 are filled with a liquid elastomeric material and pressure applied to the plates 12, 13 in the direction of arrows F, the material is forced into the recesses. Heat and continued pressure is then applied to vulcanize the ribs to the gasket.
Patent GB-187492-A (GB)
Title: Improvements in apparatus for utilizing and silencing the exhaust of internal combustion engines
IPC: F01N5/04
Filed: 1921-11-28
Abstract: 187,492. Jones, I. Nov. 28, 1921. Axial-flow type; blades; cooling parts.-An exhaust silencer comprises a casing A enclosing a series of rotor and stator wheels D. S, the wheels D being mounted on a spindle M, which also carries a fan E and is rotated by the exhaust for the production of power. The wheels D, S carry curved vanes 7 mounted in dovetail grooves in the wheels and secured to circumferential rings 8. In front of the wheels D, S are rings 1, 2 secured together and to the hub P, and having respectively axial and inclined perforations. The exhaust gases are admitted by a pipe F with air inlets O, and further inlets O<1> admit air through the hollow hub P. The fan casing L is fitted with an outlet pipe K.