baber/WOPTO huggingface dataset:
Patent GB-298058-A (GB)
Title: Combined ink stand and pen rack
IPC: B43L25/00
Filed: 1928-04-27
Abstract: 298,058. Keltonik, S. April 27, 1928. Inkstands. - In inkstand of the type provided with an ink well in combination with a pen rack which is associated with a lever for opening the cover of the well upon the removal of the pen from the rack, a flexible connection such as a chain 19 is provided between the cover 10 and the counterweighted lever 16 which normally holds the cover closed, the shape of the lever being such that it is forcibly moved to open the cover on removing the pen from the rack. The cover is pivoted between two side wings 9 at the lower end of a plate 5 secured upon the rear upper surface of the well 3, and the lever 16 is pivoted between lugs on the plate 5 and swings within a slot 21 provided therein. A plate 6 secured to the lower end of the plate 5 co-operates with that plate to form the pen rack, a slot 18 being provided for the passage of the lever 16. The upper edge of this latter slot forms a stop to limit the rearward movement of the lever. When the cover is in the open position shown, the placing of the pen upon the flanged upper portion 17 of the counterweight causes the latter member to swing downwardly and close the cover, the pen being retained between a ledge 13 on the plate 6 and the overhanging portion 22 of the counterweight.
Patent GB-1298371-A (GB)
Title: Improvements in or relating to analogue to digital conversion systems and methods
IPC: H03M1/00
Filed: 1970-03-16
Abstract: 1298371 Analogue/digital converters TENNELEC Inc 16 March 1970 [28 April 1969] 12442/70 Heading G4H [Also in Division H4] An analogue-to-digital converter 10 (Fig. 1) giving an n bit output signal first receives an analogue input signal V 1  amplified by a factor A 1 , the resulting multibit digital signal D 1  on conductor Q 1 <SP>1</SP>, Q 2 <SP>1</SP> being converted to analogue form (scaled by the factor A 1 ) in a digital/ analogue converter DAC 1 and subtracted from the input signal V 1  the residue then being amplified by a factor A 2  and fed to the converter 10. The resulting digital signal D 2  on conductors Q 1 <SP>11</SP>, Q 2 11 is converted to analogue form in a second digital analogue converter DAC 2 (scaled by factor A 2 ) and together with the first derived analogue signal subtracted from the input, the residue signal being amplified by a factor A3 and fed to the converter to form a third signal D 3  on conductors Q 1 <SP>111</SP>, Q 2 <SP>111</SP>. Multipliers 24a, 24b, multiplying the first and second digital signals by A 3 /A 1  and A 2 /A 1  respectively and an adder 26 adding the outputs of the multiplers to the third digital signal D 3  result in a binary coded digital output representing the value of input signal V 1 . As described to convert to within one of 64 channels the converter 10 includes three threshold detectors L 1  = 16, L 2  = 32, L 3  = 48, the highest level triggered being converted via a decimal-to-Gray converter to a 2-bit binary number on output conductors Q 1 , Q 2 . The digital signals are stored in registers 20a, 20b, 20c the outputs from which control switches in the digital/analogue converter. To reduce errors due to the threshold levels being higher than they should be the number of channels may be reduced to 35 with the threshold levels set at L 1  = 9, L 2  = 18, L 3  = 27 so that an element of redundancy is introduced. To reduce errors due to a threshold being too high a pre-bias may be added into the input of the amplifier by circuit 32 during the first and second conversions. Instead of including threshold levels the converter 10 may alternatively be a serial type amplitude to time converter or a standard successive approximation converter.
Patent GB-657063-A (GB)
Title: Improvements in or relating to relaxation circuits
Inventor: DAVISON ALAN
IPC: H03K3/06
Filed: 1948-05-06
Abstract: 657,063. Valve circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. May 6, 1948, No. 12451. [Class 40 (vi)] In a multivibrator or flip-flop circuit the frequency of operation or the time required to revert to the normal stable state is rendered substantially independent of variations in the supply voltage by returning the grid circuits of both valves or of the normally conducting valve to a point on a potentiometer which includes a non-linear resistor and is connected to the supply voltage source. The Figure shows a circuit for providing pulses for the automatic routine testing of telephone equipment the impulsing circuits being controlled by contacts AR1, BR1 across lines 10, 11 and 12, 13 which give complementary pulses of equal duration and by contact CR1 across lines 15, 16 which give pulses of a predetermined " mark-space ratio. Valves VA, VB are cross connected between screen and control grids to function as a free-running multivibrator circuit the frequency of which is determined by the setting of potentiometer R10 and the symmetry of which is adjusted by potentiometer R9. The relays AR, BR alternately operate and release and their associated contacts AR1, BR control impulsing circuits connected to leads 10, 11 and 12, 13. The non-linear resistor NLR1, which may comprise a disc of material known by the Registered Trade Mark of " Atmite " has a resistance value which varies inversely and instantaneously with a change of applied voltage so that if the voltage, e.g. at point A varies due to a change in supply voltage the voltage at point E varies in a direction to offset the effects of this first variation. The negative pulse produced at the anode of valve VB when it is rendered conducting is applied via capacitor C4 and rectifier MR to trigger over the flipflop circuit comprising valves VC, VD, in which valve VD is normally conducting and valve VC is cut-off. The duration of the unstable state is determined by the time constant of network C3, R17 and is rendered substantially independent of changes in supply voltage by the provision of the non-linear resistor NLR2 in the potentiometer to which the grid circuit of valve VD is returned. The operation of relay CR controls contact CR1 which is arranged to have a predetermined " makebreak" ratio controlled by the setting of potentiometer R23. Specification 657,089 is referred to. Reference has been directed by the Comptroller to Specification 665,906.
Patent GB-1197471-A (GB)
Title: Improvements in or Relating to Luminous Compounds
Inventor: AULT JOHN DOUGLAS
IPC: C09K11/04
Filed: 1967-03-16
Abstract: 1,197,471. Uses of luminescence. SAUNDERS ROE DEVELOPMENTS Ltd. 27 Feb., 1968 [16 March, 1967], No. 12501/67. Heading C4S. A method of producing a self-luminous material wherein the ion implantation process (as described in Science Journal, February, 1967) is used to deposit ions of a radioactive isotope (e.g. H 3 , Kr 85 , Pr 147 ) within the lattice structure of single phosphor crystals (e.g. ZnS or Eu or Gd phosphors), the process consisting in the extraction of radioactive ions from a plasma (e.g. by an electrostatic field), collimating the ions into a narrow beam and accelerating same to impinge on the target. The target may be a pure metal or an alloy. The radioactive source may be in the solid state, the atoms being extracted by sputtering to enter the plasma, separation being achieved by an e.m. analyser prior to acceleration on to the target. Ions channelling between rows and planes of the crystal without major collisions, are implanted beyond the statistical range. Instanced are applications to EXIT signs, direction indicators and markers, watch, clock and radio dials. The material may be used as luminescent paint or contained within or used to coat the internal surface of a translucent capsule or bulb
Patent GB-944573-A (GB)
Title: Process for the preparation of diphenylamine
Inventor: RENE MAURICE HENRI VANIER DE S
IPC: C07C209/64
Filed: 1960-04-08
Abstract: A process for the preparation of diphenylamine comprises contacting anhydrous aniline in the presence of, as catalyst, boron fluoride, boron fluoride-aniline complex or boron fluoride-ammonia complex, the contact taking place under superatmospheric pressure and a temperature between 250 DEG C. and 400 DEG C.  Ammonia produced in the process may be removed as it is formed e.g. by means of a stream of inert gas. Examples are furnished.
Patent GB-580334-A (GB)
Title: Improvements in or relating to internal shoe drum brakes
IPC: F16D65/22
Filed: 1944-06-30
Abstract: 580,334. Brakes. AUTOMOTIVE PRODUCTS CO., Ltd., and PARNELL, F. G. June 30, 1944, No. 12527. [Class 103 (i)] In an internal shoe drum brake of the kind wherein the shoes are free to move circumferentially between abutments, the shoe-spreading means comprise a pair of toggle linkages 57, 65; 58, 66 and a member 52 for moving the ends of the links 57, 58 inwardly so that the elbows of the links are moved outwardly and move the shoes correspondingly. Alternatively, one shoe may be operated by the toggle arrangement and the other shoe otherwise. The abutments 23, 24, 33, 36 have middle portions which fit loosely between spaced webs 19 on the shoes 14, 15, the rounded ends of the web being accommodated on stepped parts' of the abutments which are themselves carried on the supporting member 10. The abutments 33, 36 are adjustable by a wormoperated right and left-handed screw 27 and vertical projections on the support 10 may be provided to back up the abutments against the outward thrust of the links. The elbow assemblies each comprise a member 62 having limbs 69, 70 with semi-cvlindrical projections 71, 72 which engage and pivot in similarly curved recesses in the edges of the webs 19. A spring 76 anchored between a pin 75 and the support 10 keeps the member 62 in engagement with the toggle-link ends, and the pivoted mounting 71, 72 permits the toggle-elbow to have limited circumferential movement relatively to the shoe. The shoes are held against axial movement by fingers 78, 79 on the member 10, a spring- pressed plunger 80 keeping the shoe towards the finger 78. The member 52, which is shaped to accommodate the ends of the links 57, 58 is circular in section and is held in a bore 51 in the end of an operating lever 45, rotation of the member 52 in the bore being prevented by a grub screw. According to the Provisional Specification, each toggle linkage comprises a bent link and a straight link, the former being the longer so that it extends beyond the centre of the shoe. The end of the bent link is socketed to receive a ball on the end of the short link.
Patent GB-200282-A (GB)
Title: Improved apparatus for loading and unloading heavy wheeled loads, such as artillery pieces, onto and from motor lorries
IPC: F41A23/26
Filed: 1922-05-04
Abstract: 200,282. Redenti, A. May 4, 1922. Field carriages. - A heavy wheeled load such as a piece of artillery is hauled on to a transport vehicle H by means of a winch C and ramps E, F, the movements of the load being controlled by ropes passing to a winch D. The ropes of the winch D are wound on cradles J which are hinged on the vehicle H and surround auxiliary rims R secured to the sides of the wheels of the load. The vehicle H carries bearing blocks W, Y for the wheels of the load. The ropes of the winch D may be attached to arms L<1> extending from the cradles J. In modifications, the cradles are replaced by arms pivoted to the vehicle H and provided with clamping means for engaging the wheels of the load at their hubs. The arms may be operated by the winch D or by gearing or other means. In another modification, Fig. 11, neither cradles nor hinged arms are used, the ropes from the winch D being attached to pieces L<2>, R<1> secured on the wheels of the load, the piece R' forming a pivot for the load.
Patent GB-778108-A (GB)
Title: Electrical resistor and method of making it
IPC: H01C1/14
Filed: 1955-05-02
Abstract: 778,108. Glass composition. CORNING GLASS WORKS. May 2, 1955 [June 3, 1954]-. No. 12704/55. Class 56 [Also in Group XXXVI] A resistor consisting of a glass or ceramic body with a conducting film of metal oxide produced by heating the body while in contact with a vapour or atomized solution of a hydrolysable salt or other compound of a metal, and cooling in air, has the film lying between metallic terminals coated with a glaze having an expansion co-efficient compatible with that of the body. The supporting body 1 may consist of porcelain or sillimanite, or of the following glass compositions (i) 59.5 per cent SiO 2 , 5 per cent B 2 O 3 , 19 per cent Al 2 O 3 , 9 per cent MgO, 7 per cent CaO and .5 per cent NaO 2  or (ii) 62 per cent SiO 2 , 15 per cent Al 2 O 3 , 8.3 per cent MgO, and 14.7 per cent CaO. The conductive coating 2 may be produced as described in Specification 639,561 or by heating the body to a temperature of 500-700‹C. or higher, in the presence of a vapour or atomized solution of the chloride, -bromide, iodide, sulphate, nitrate, oxalate, or acetate of tin. indium or cadmium, or of tin and antimony, tin and indium, or tin and cadmium with or without a similar salt or compound of a modifying metal such as zinc, iron, copper or chromium. Spaced metal terminals 3 may be produced by applying a silver containing glaze and firing. The protective glaze 4 may be produced by coating with a suspension of pulverized ceramic enamel first in water, and firing in a non-oxidizing atmosphere such as nitrogen or argon. Examples of compositions suitable for the coating are (i) 44 per cent SiO 2 , 17 per cent B 2 O 3 , 7 per cent Al 2 O 3 , 5 per cent ZnO, and 27 per cent PbO or (ii) 43.9 per cent SiO 2 , 17 per cent B 2 O 3 , 7 .per cent Al 2 O 3 , 5 per cent ZnO, 26.8 per cent PbO and .3 per cent Li 2 O. The body and conductive coating preferably contain less than 1 per cent of alkali metal oxide.
Patent GB-433653-A (GB)
Title: Improvement in lead alloy bearing metal
IPC: C22C11/02
Filed: 1934-04-27
Abstract: A hardened lead alloy for bearings contains 0,5-5,0 per cent of tin and 0,6-2,0 of calcium, the major portion of the latter being in the form of calcium lead crystals distributed through the body of the alloy.  The alloy may also contain 0,02-0,1 per cent of aluminium and 0,1-1,0 of mercury. Instead of mercury or in addition to mercury in quantities of 0,1-0,25 per cent one of the following metals may be present in the percentages stated:-Silver 0,5-2,0, barium 0,02-0,1, strontium 0,02-0,5, copper 0,05-0,5, and manganese 0,05-0,5.  In the preparation of an alloy, the lead is melted under a suitable flux and aluminium introduced preferably as an alloy containing 50 per cent of tin.  The calcium is then introduced in metallic form or in the form of a lead alloy containing 5 per cent of calcium.  If any of the auxiliary hardeners such as silver, are employed, they may be introduced either in metallic form or in the form of a tin alloy. The melt is then allowed to cool and the slag covering skimmed off or is allowed to solidify, and remelted to about 371 DEG  C. and the mercury, if desired, and the rest of the tin added.
Patent GB-1429532-A (GB)
Title: Process for the single-bath dyeing and printing of cellulose fibres with reactive dyestuffs
IPC: D06P3/66
Filed: 1973-03-16
Abstract: 1429532 Dyeing cellulose with reactive dyes HOECHST AG 16 March 1973 [18 March 1972] 12781/73 Heading D1B Textile materials made of or containing natural or regenerated cellulose fibres are dyed or printed with reactive dyes by a continuous or semi-continuous process using a pad-dyeing or printing technique which comprises applying a padding liquor or print paste which contains one or several reactive dyes, an alkali or alkali yielding agent and water together with a phosphine oxide and/or an aminoxide of the formulae: in which R R 1  and R 2  each represents a linear or branched alkyl or alkylene radical having 1 to 18 carbon atoms which radicals may be substituted by hydroxy, cyano, or amino groups or by halogen atoms and which may be optionally interrupted by oxygen, sulphur and/or nitrogen atoms and/or by a carboxylate, carboxyamide or sulphonamide group, in which case the radicals R 1  and R 2  may be the constituents of a heterocyclic 5- or 6-membered ring, provided that the sum of carbon atoms contained in R R 1  and R 2  is at least 8 and at most 20, the material being then optionally dried and heated or allowed to dwell at room temperature or at a temperature up to 60‹C to fix the dyes. The phosphine oxide and/or amine oxide may be used in an amount of from 1 to 100 gms per litre of padding liquor or print pastes, organic solvents e.g. monohydric to trihydric linear or branched aliphatic alcohols having 1 to 5 carbon atoms may be used.
Patent GB-692459-A (GB)
Title: Improvements relating to a curler for short hair
IPC: A45D2/10
Filed: 1951-05-30
Abstract: 692,459. Hair curling appliances. TUMMLER. H. Mav 30, 1951 [May 30, 1950], No. 12793/51. Class 131 A curler for short hair comprises a tube containing two locking levers each pivoted intermediate its ends on a common hinge pin connected to the tube and each provided, at one end, with a finger grip portion projecting beyond the end of the tube, and at the other end, with an outwardly projecting hook which is withdrawn when the finger grips are pressed together. As shpwn, the tube 1 is apertured at 4 to receive a'hinge pin 10 for the locking levers 8. When the finger grips 6 are released hook parts 9 of the levers are urged by a coil spring on the hinge pin to project through slots 3 in the tube to have a wedging action on the root part of a truss of hair coiled on the curler which in use is positioned with its longitudinal axis normal to the scalp.
Patent GB-560906-A (GB)
Title: Protecting arrangements for thermionic valve circuits
IPC: H03F1/54
Filed: 1942-09-10
Abstract: 560,906. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and CLOUGH, N. H. Sept. 10, 1942, No. 12801 [Class 40 (v)] A valve circuit with an inductive element in its anode circuit is protected against high transsient voltages on its anode by connecting a rectifier and an impedance ' across the H.T. supply and interposing a condenser between the valve anode and the junction of the rectifier and the impedance. In the choke modulator circuit, Fig. 1, the LF valve VM, with the choke L in its anode circuit and in the circuit of a carrier valve HF, has its anode A connected by a condenser C to the junction of a rectifier VL and an impedance R connected in series across the H.T. supply, the rectifier cathode being connected to H.T.+. High positive transient voltages occurring at A, due for example to switching operations in the circuits feeding the valve VM, are discharged through the rectifier. The rectifier may be a hard valve, a gas-filled valve, or of the dry-plate metal type. The valve VM may be a lowfrequency amplifier, in which case, the primary of an output transformer replaces the resistance R, Fig. 2 (not shown). In another modulating circuit, Fig. 3 (not shown), push-pull class B amplifiers have the secondary coil of their LF output transformer connected between the rectifier anode and earth in place of the resistance R, the directly-connected valve VM of Fig. 1 being omitted. Fig. 4 shows a carrier amplifier VA with a tuned circuit RC connected in place of the resistance R of Fig. 1. The amplifier operates in Class C fashion, and is protected by the rectifier against over-driving.
Patent GB-793942-A (GB)
Title: Improvements relating to the construction of underground concrete pipes or land drains
Inventor: EDE AINSLEY NEVILLE
IPC: E02D15/04
Filed: 1954-05-03
Abstract: 793,942. Moulding pipes underground. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 3, 1955 [May 3, 1954, Dec. 30, 1954], Nos. 12810/54 and 37717/54. Class 20(2) An underground concrete pipe is moulded by a mole plough 10, towing a core 15, of smaller cross section, concrete being suplied through a conduit 18 and an aperture 17 in the top of a shroud 16 between which and the core the concrete pipe is moulded, the lower edge 20 of the shroud being oblique and inclined upwardly from front to rear and a vibrator 25 being mounted in the core 15. The plough is mounted on a tractor by a hollow coulter 12 through which extends the conduit 18. The vibrator 25 is an eccentric flywheel and the core 15 is secured at its leading end by a leaf spring 27 to the plough and tows behind it a second non-vibrating core 30 by a rubber connection 31. The concrete is fed from a hopper 38 by a screw conveyers 39 into the conduit 18, the sheath being vibrated by a vibrator 36 on legs 37. As the concrete supplied to the forward part of the orifice 17 forms the lower part of the pipe and that supplied to the after part forms the upper part of the pipe, the conduit 18 may be divided by a vertical partition into forward and after parts to which different kinds of concrete may be supplied to form a non- homogenous pipe with the upper part formed of a different kind of concrete to the lower, Fig. 3 (not shown). In this modification also a scraper plate is turned by the coulter which presses loose earth over the newly formed pipe. Water or liquid grout may be supplied at the after side of the lower end of the conduit 18. The core 15 and the shroud 16 may be extended aft of the aperture 17 and a former plate hinged inside the shroud and pressed down by a sponge rubber pad forms the top outer surface of the pipe. The core may be offset on the plough so as to form the upper part of the pipe thicker than the lower part. The non-vibrating core may be formed by a number of tubular sections 64, Fig. 8 the reduced forward ends of which are bonded by foam rubber sleeves 70 inside the adjacent sections. The sections are threaded on a rod 65 having a stop 69 which prevents escape of the sections. The vibrating core 53 may be mounted on the plough 10 by a rubber sleeve 72.
Patent GB-248221-A (GB)
Title: Improvements relating to sound absorbing constructions for walls, ceilings or the like
IPC: E04B1/82
Filed: 1925-05-16
Abstract: 248,221. Byrne, E. L. W., (Dahlberg & Co., Inc.). May 16, 1925. Non-conducting coverings for sound.-A soundabsorbing covering for walls and ceilings consists of perforated or grooved porous boards 1 made of vegetable fibres such as bagasse. The perforations are drilled, gouged, or sawn to produce ragged edges and may extend wholly or partially through the thickness and may be parallel, tapered, or shouldered. The boards may be applied directly to the wall or be spaced therefrom by supports 23 which may have apertures for air circulation. A thin sheet of similar porous material or fabric such as burlap may be applied to the boards to cover the perfcrations and may be coloured to suit the surroundings.
Patent GB-766456-A (GB)
Title: Improvements in or relating to pie making machines or the like
IPC: A21C11/00
Filed: 1954-05-04
Abstract: 766,456. Pie-moulding machines. HOLKER, J. May 4, 1955 [May 4, 1954], No. 12885/54. Class 87(2). In order to give an increased mechanical advantage at the end of the pressing stroke, the pivot 18 for the lever 20 and the pivotal con. nections at the ends of the link 26 are arranged to be in a common plane at the end of the stroke. The die holder 16 is carried by a shaft 14 slidable in a bearing 13. The handle 19 is returned, after pressing, by a counterweight 22 and a spring 23. The movement of the die holder is limited by an adjustable stop 24 which engages a member 25.
Patent GB-660862-A (GB)
Title: A hollow spindle chuck
Inventor: ROBICHAUD EDMUND J
IPC: B23B31/20
Filed: 1949-05-14
Abstract: 660,862. Chucks. WATERBURY FARRELL FOUNDRY & MACHINE CO. May 14, 1949, No. 12903/49. Class 83 (iii). In a hollow-spindle bevel-closing chuck the spindle 2 is provided with circumferentiallyspaced longitudinal slots 48 in which are disposed wedge members 50 secured to the inner end of a collet-actuating tube 26, a spool member 56 reciprocable on a sleeve 54 fixed on the spindle having circumferentially-spaced longitudinal grooves 58, in alignment with the slots 48, within which are fixed shoes 60 having cam faces 61, and cylindrical rolls 64 being located between the wedge members 50 and the shoes 60 and engaging against the front face of the sleeve 54 so that when the spool member is moved forwardly on the spindle the tube 26 is moved forwardly to contract the forward end of the collet.