baber/WOPTO huggingface dataset:
Patent GB-230260-A (GB)
Title: Feeding sheets to stencil or type duplicating machines
IPC: B65H1/04
Filed: 1924-03-04
Abstract: 230,260. Green, C. F. March 4, 1924. Sheet - separators: feed - tables.-To assist the hand-feeding of sheets to stencil or type duplicating-machines, the sides of the sheets on the feed-board 10 are gripped at the back end by abutments 15 arranged so that they can be sprung over the adjustable side guides 11. The abutments 15 are provided with knife edges 16, or with a series of knife edges or serrations so that the sheets are slightly penetrated, and under sheets are retained in their original position when the top sheet is pushed forward bv the operator. To retain the pile in position down to the last sheet, the surface of the board 10 is roughened or covered with a rough material.
Patent GB-894766-A (GB)
Title: Adapter for connecting take-off duct to trunk duct
IPC: F16L41/02
Filed: 1961-02-15
Abstract: 894,766. Pipe joints; junction pieces. CONTINUE-FLO HEATING PRODUCTS Ltd. Feb. 15, 1961 [June 22, 1960], No. 5597/61. Class 99(1). An adaptor 10 for connecting a takeoff duct to a trunk duct 16 has a sliding tongue - and - groove junction with the trunk duct and the junction includes a separate internal clip 34 slidably guided on the adaptor and movable into final position to seal off part of the junction. As shown, three sides of the adaptor throat section 14 are provided with outwardly and inwardly extending flanges 22, 26, 30 which co-operate to form channels, the outwardly facing channel slidably receiving the edges of the opening 18 in the trunk duct; the other edge of the adaptor has an inwardly facing flange 32 and a clip 34 of U-cross-section is slidable in the inwardly facing channel. In installing the adaptor, the flanges 30 are inserted through slits 20 of the opening 18 and the adaptor is moved along the duct with the edges of the opening received in the upper channels formed by flanges 26, 30. When the adaptor is in position, the clip 34 is moved along the lower channels to engage the flange 32 of the adaptor and the edge of the opening 18.
Patent GB-670710-A (GB)
Title: Improvements in or relating to axial-flow compressors
Inventor: ROBINSON SAMUEL
IPC: F01D3/04
Filed: 1949-03-01
Abstract: 670,710. Axial-flow compressors. BRISTOL AEROPLANE CO., Ltd. May 30, 1950 [March 1, 1949; Aug. 23, 1949], Nos. 5640/49 and 21949/49. Class 110(i) [Also in Group A chamber is supplied with air by an axial-flow compressor, a thrust due to the air pressure in the chamber being applied to counterbalance the axial thrust of the compressor, means being provided to maintain the air pressure in the chamber below a selected value. The end face of a rotor 12 at the delivery of the first stage 5 of a two-stage compressor carries a disc 13 and labyrinth seal rings 14, 15 forming a closed chamber 21. Air leaking into the chamber establishes a pressure substantially ecual to the delivery pressure of stage 5, which pressure is exerted against disc 13 to counteract end thrust. Chamber 21 communicates through a hollow radial support arm 11, with a valve casing 28 containing a valve 33 which is normally closed by a spring 32 and oil pressure exerted through a duct 37. The oil pressure is derived from the lubricating system of the gas turbine or other engine of which the compressor forms a part. If the pressure in the chamber 21 exceeds a predetermined value, it opens the valve 33, permitting air to pass by way of passages 36 into a compartment 27, where it opens a valve 23 by which the chamber 21 is vented to atmosphere until the pressure is sufficiently reduced. Air trapped in the compartment 27 after the valve 33 has closed, which would otherwise prevent closure of valve 23, can escape through a restricted orifice 30.
Patent GB-121686-A (GB)
Title: Improvements in Rotary Pumps.
Inventor: HANDOLL HENRY
IPC: F04C2/18
Filed: 1918-04-03
Abstract: 121,686. Handoll, H. April 3, 1918. Movable-abutment type; balancing moving parts; packing drums. - The rotors are formed with annular grooves c cut in the end-faces, and connected to the roots of the teeth by radial grooves f and to the apexes of the teeth by grooves c Grooves d are cut along the teeth. In a modification, the annular groove e extends to the roots of the teeth. Specifications 25222/04 and 7698/08 are referred to.
Patent GB-677605-A (GB)
Title: Improvements in electric arc bolt welding tools
IPC: B23K9/20
Filed: 1951-03-09
Abstract: 677,605. Welding by pressure. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 9, 1951 [March 10, 1950], No. 5719/51. Class 83 (iv). A tool for arc welding studs &c. comprises a casing with work-engaging legs and a piston attached to the stud chuck with a tube coupled to the piston to be relatively movable thereto by an amount equal to the arc length to provide an arc of constant length wherein the piston and tube initially move under fluid pressure towards the work, and the tube is locked to the casing by reducing the fluid pressure when the stud has engaged the work and the piston is moved relatively to the tube under spring means. In an embodiment, a gun comprises a casing having legs 18 and a stud chuck 7<SP>1</SP> secured to a piston 6 slidable within the casing and urged upwardly by a spring 14. A lost-motion connection between the piston 6 and a cylinder 10 slidable within a guide 10a, is provided by lugs 15, 16 on the piston 6 and cylinder 10, respectively, while a spring 16 normally urges the piston 6 and cylinder 10 apart. A rod 12 is adjustably secured within the cylinder 10 and slidable within a fixed wedge-shaped portion 9 to a sleeve 8 acting upon locking balls 17 and a spring 21. In operation pressure fluid flows from a duct 1 through passages 3, 4 and 5 to move the piston 6 downwardly against the spring 14 until stopped by a shoulder 13. The piston 6 pulls the cylinder 10 downwardly by means of the lugs 15, 16 so that a gap is formed between.the piston 6 and the rod 12. The sleeve 8 is also depressed by the fluid and lowers the balls 17. The stud is inserted and pressed upon the work, lifting the piston 6 from shoulder 13. The fluid-pressure is lowered and the sleeve 8 rises first to release balls 17, thus locking the cylinder 10. Further lowering of the fluid-pressure allows the piston 6 to rise the distance between the piston 6 and the rod 12 to strike an arc between the stud and work connected to a current source. High-pressure fluid then flows through the duct 1 to press the piston 6 downwardly and the stud into the work. A passage 23 is provided to prevent over-pressure below the piston 8.
Patent GB-180067-A (GB)
Title: Improvements in liquid measuring apparatus
IPC: G01F11/44
Filed: 1921-02-19
Abstract: 180,067. Robinson, C., and Bennie, T. L. Feb. 19, 1921. Fixed-chamber apparatus; controlling passage of air and gases for; valve systems for.-Relates to measuring chambers provided with a floatoperated air - valve and a cock controlling supply and discharge, and consists in interlocking the float with the operating mechanism of a three-way cock so that the latter can only be operated in the extreme positions of the float. The chamber consists of a glass cylinder h secured between covers e, m<1>, by means of an apertured frame h<1> surrounding the cylinder, packing-rings being provided. A three-way cock l<2> is fitted at the bottom, while a rod g having collars k<1>, g<2> passes through the air aperture e<2> and a float j in the chamber. A plug g<1> secured to the rod is adapted to close the air-vent. The top of the rod g is pivoted to an arm a pivoted at a' and fast with an extension which normally lies in the path of a projection b<1> on a quadrant b carried on a shaft c connected by crank and link c<2>, m to the valve l<2>. In the upper position of the float, the air-vent is closed, and the arm out of the path of the projection on the quadrant b. In this position, the valve l<2> may be turned to discharge. As the float falls, the arm is moved again into the path of the projection b<1> and the valve l<2> locked in the discharge position. In this locking position, the rod g is supported by a spring k which takes under a collar k<1> on the rod. When the float has fallen so that it engages the collar g<2>, the rod is moved down against the spring k and the valve again freed for operation.
Patent GB-1241011-A (GB)
Title: Improvements in or relating to electric control systems
Inventor: ATKINSON PETER
IPC: G05B13/04
Filed: 1968-02-05
Abstract: 1,241,011. Automatic control systems. NATIONAL RESEARCH DEVELOPMENT CORP. April 24, 1969 [Feb. 5, 1968], No. 5730/68. Heading G3R. In an arrangement in which the response #os of a control system Hs to an input #i is compared with the response #om of a model Hm to the same input and any difference (error) # is fed back to the input of the control system, the feedback is modified by an element, one parameter of which is varied by a signal according to the operational performance of the system. The performance criterion may be the minimum mean square value of the error #, but as shown it is the sum of e and the rate of change of # times a constant (###). The feedback is modified by varying the gain or factor K1 of a multiplier M, and this is done at intervals by periodically applying a squarewave perturbation signal added to the performance criterion signal; by known "kill climbing" technique the performance criterion signal is reduced to a minimum. In the arrangement shown the performance criterion signal # + # ## is produced at SC3 and is applied to an absolute value circuit AVC and Fig. 4, (not shown) which produces the modulus 1 #  + # ##1 and it is shown that this is a minimum when K1 is optimum. Its polarity is reversed at the perturbation frequency in a phase sensitive detector PSD and when K1 is optimum the positive and negative half cycles are equal, so that the average output is then zero. The output is integrated and sampled at the perturbation frequency, the value being held by a capacitor in a circuit SHC and Fig. 5, (not shown). It is then combined with the perturbation signal and with an initial value signal #ap for K1, at SC6 to control K1. The output of the multiplier M is added to the error rate ## and, after constant amplification at K3, is fed back to the input of the control system at SC1.
Patent GB-152565-A (GB)
Title: Improved fluid-pressure oscillatory motor
IPC: D06F37/34
Filed: 1920-02-26
Abstract: 152,565. Fletcher, R. J., and Ewart, R. D. Feb. 26, 1920. Fixed-abutment type; packing drums, vanes, abutments, etc.; valves, distributing &c.-Relates to engines of the oscillating-vane type, and more particularly to hydraulic motors, in which the inlet and exhaust valves are operated by the impinging of the vane on the valves. According to the invention, a vane 25 mounted on a squared spindle operates in a cylinder 2. Leather packing 26 is secured to the vane by clamping- plates which carry spring buffers 29 adapted to strike the inlet valves 18, 19 and the exhaust valves 20, 21, situated in a hollow casting 9. The casting 9 is divided by a partition 12 into inlet and exhaust chambers 13 and 14. In a modification, the casting is made so as to allow the vane to travel through an angle greater than 180 degrees.
Patent GB-1185072-A (GB)
Title: Improvements in or relating to Liquid Scintillation Spectrometry
IPC: G01T7/08
Filed: 1967-04-06
Abstract: 1,185,072. Source support. PACKARD INSTRUMENT CO. Inc. 6 April, 1967 [11 April, 1966], No. 5843/69. Divided out of 1,185,071. Heading H5R. In the liquid scintillation spectrometry of a sample 24 (Fig. 1) a standard source array is positioned externally of the sample by being transferred, e.g. by means of compressed air, from a storage position (Fig. 7, not shown) to the operative position shown in Fig. 1, along tube 104. The array essentially comprises two radio-active sources 98 and 48 (Fig. 3), having known but different emission characteristics and a spacer for maintaining said sources in a fixed spaced apart relationship, one of such sources, e.g. 48 being of a type, e.g. Ra 226 that emits radiation having both relatively high and relatively low energy levels and the other, e.g. 98 being of a type, e.g. Am 241 or Ba 133 which emits radiation having primarily relatively low energies only, and the array is positioned as shown in Fig. 1 with both of said sources adjacent the sample when in the operative position, and both of said sources are remote from the sample when in the storage position. Preferably each of the sources has a dumbell configuration and comprises a capsule 118 in metal cladding 116, both ends of which are supported in nylon balls 119 to impart improved mobility to the array in tube 104. The two sources may be spaced by similar dumbell shaped components 122 comprising a cylinder of inert material 124 supported by nylon balls 119. The multiplicity of dumbell spacers may be substituted by a single barbell shaped piece (Fig. 4, not shown) or alternatively the source capsules 118 may be positioned at opposite ends of a length of rod which ends are similarly supported by nylon balls (Fig. 5, not shown). If desired a longer source capsule than that shown as 118 may be used in source 98 (Fig. 6, not shown) or the same effect may be achieved by mounting two dumbell sources 98 containing capsules 118 next to each other in the source array. If desired an inert spacer 122 may occupy the terminal position of the array.
Patent GB-402777-A (GB)
Title: Improved means for and methods of manufacturing, utilising and applying phosphorescent compounds
IPC: C09K11/06
Filed: 1932-02-27
Abstract: Phosphorescent compositions are mixed with dehydrated sulphate of quinine to prevent decomposition of the phosphorescent ingredients. Dry zinc or calcium sulphide is mixed with sulphate of quinine which has been heated to remove water of crystallization to form a powder, or with the addition of glycerin and paraffinum liquidum to form a paste.  A luminous paint is then prepared from the powder or paste by addition of a lacquer such as collodion or a mixture of French turpentine, copal or dammar, and boiled linseed oil.  The powder may be first mixed with oleic acid and a small amount of ether to form a homogeneous paste.  Small amounts of radio-active substances such as meso-thorium bromide, thorium sulpho-carbolate or oleate may be added, and powdered glass or pigments such as madder lake, barium chromate, chromium green, cobalt blue or cobalt arsenate.  A mixture of powdered zinc and antimony may be incorporated to render the coating electrically conductive.  Quinine sulphate may be replaced by a quinine compound formed by adding an alcoholic solution of iodine to a solution of quinine sulphate in acetic acid and dehydrating the crystals obtained.  The paint may be applied to sheets of celluloid and a protecting coating of varnish then applied. Luminous sheets may be prepared by incorporating the phosphorescent powder with sufficient collodion and then rolling the resulting mixture.  The compositions may be used as a backing for jewels, or in the manufacture of advertising and showcards, name plates and for rendering visible in the dark such articles as ash trays, table mats, watch faces and stands, medicine bottles, lock and keyhole surrounds, door knobs, stair mountings, corner indicators, meters, switches, and bell pushes.
Patent GB-349599-A (GB)
Title: Improvements in or relating to varnishes and the like
Filed: 1930-02-22
Abstract: Relates to varnishes containing phenol-aldehyde, phenol-oil-aldehyde, urea-aldehyde or sulpho-urea-aldehyde resins. Varnishes which dry to a non-tacky film without baking comprise a dispersion in a volatile varnish solvent of the resin which has been advanced towards the C stage by heating the A-resin, with or without a solvent, until it has little or no penetrating power when applied to a test-paper.  The varnish solvent is one in which the advanced resin is substantially insoluble.  The non-tacky film formed by such a varnish may be baked to increase the hardness and resistivity.  The dispersion may be formed by advancing the A-resin in solution in the varnish solvent, provided the latter has a sufficiently high boiling-point.  The resin may be advanced in a high-boiling solvent such as butyl alcohol, and the product poured into a low-boiling solvent or solvent mixture; high-boiling solvents specified are amyl acetate, turpentine, the usual plasticizers such as di-amylphthalate, ethyl abietate, &c., and natural resins such as rosin and rosin ester.  The resin may be advanced without solvents till a gel is formed, and the gel may be broken down in paint rolls and the product suspended in a solvent. In one example, phenol is reacted with formaldehyde, using hexamethylenetetramine as catalyst, and the reaction is stopped, when the mass is about to kick-over to the porous rubber-like, infusible and insoluble form, by adding a cold mixture of butyl alcohol and amyl acetate.  Alternatively, a commercial A-resin may be brought to the same condition.  The product is then heated under a reflux condenser for 12 hours until the viscosity is sufficiently increased by the further advancement of the resin, and the liquid is poured into acetone, alcohol, toluene, ethyl acetate or other low-boiling solvent or mixture.  The resin may be advanced still further by again heating under a reflux condenser. The solvents may be added to the raw materials prior to the initial condensation.  In another example, phenol is reacted with tung oil (raw, or "boiled" containing metallic driers) using phosphoric acid as catalyst; the product is heated with amyl acetate, butyl alcohol, and hexamethylenetetramine to form a resin; butyl alcohol and turpentine are added and the liquid heated for 16 hours to advance the resin towards the C-stage.  In a further example, phenol is reacted as before with a larger quantity of tung oil, the product is heated with hexamethylenetetramine for 24 hours at 105 DEG  C. to form a gel, and the gel is broken down on rolls and suspended in acetone or like solvent to form a lacquer with 30 per cent solid content. Specifications 275,604 and 295,335, [both in Class 95, Paints &c.], are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of alkyd resins.  This subject-matter does not appear in the Specification as accepted.
Patent GB-271041-A (GB)
IPC: F16K1/42
Filed: 1927-03-05
Abstract: 271,041. Mathieson Alkali Works, (Assignees of Mauran, M.). May 17, 1926, [Convention date]. Lift valves; seats and faces.- A screw-down lift valve for high pressures comprises a removable seating 30 of relatively soft metal in the form of a conical plug inserted liquid tight into the casing from below. The upper end of the plug is formed as a seating, preferably conical, into which the valve member 27 enters. The Figures show the various arrangements described, the seating being secured by a set-screw or ferrule 35 with an anti-friction washer 36 interposed.
Patent GB-271960-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J19/34
Filed: 1926-03-05
Abstract: 271,960. Standard Telephones & Cables, Ltd., and Gibson, W. T. March 5,1926. Vacuum tubes. - In a water-cooled valve, an anode forming a part of the envelope is lined with and electrically connected to refractory material either contiguous therewith or separated therefrom by a part of the vacuum space. As shown, a lining 4, which may be of molybdenum, is spun within the anode 3, which has an annular protuberance 5, and may, if desired, cover the end of the anode as well as the cylindrical portion. The inner end of the lining is partly closed by an annular screen 6 on a ring 7 forming part of the grid structure and by a conical screen 9 supported from a filament - carrying platform 10. In another form, the lining extends over the cylindrical and conical parts of the anode and is spaced therefrom by projections or studs, which may be short conductors on which silica beads are threaded. In either construction, the lining prevents local overheating.
Patent GB-880317-A (GB)
Title: Improvements relating to electric lawnmowers
IPC: A01D69/02
Filed: 1957-02-25
Abstract: 880,317. Lawn-mowers. LEAMAN, F. L. Feb. 11, 1958 [Feb. 25, 1957], No. 6294/57. Class 6(2). In a power driven lawn-mover, the drive is transmitted from the shaft 9 of an electric motor 1 to a shaft 10 via a train of nylon reduction gears, and from thence to the shaft of the cutting cylinder 17 by means of a V belt 18 housed within a casing 19. Provision may be made for utilising the power from the motor 1 to propel the machine forward by providing a chain drive 25b between the shaft of the cutting cylinder and that of the roller 21 a clutch being included in the latter system so that the drive may be disengaged at will.
Patent GB-346530-A (GB)
Title: Improvements in or relating to means for suspending wireless aerials and the like
IPC: H01Q1/16
Filed: 1930-02-25
Abstract: 346,530. Clips and clamps. WICKS, L. A., 77, Manchester Drive, Leigh-on-Sea. Feb. 25, 1930, Nos. 6298 and 9337. [Class 44.] A device for fastening a wireless aerial or the like to a supporting - pole consists of a pair of spring arms 1, 1a adapted to fit around the pole 9, Fig. 3, and having a socket 4 to receive the end of a smaller rod or pole by which the device is lifted into position. The open ends of the arms are connected by a pair of toggle-levers 5, 5 to which the aerial insulator is attached as shown. In operation one of the levers 5 is unbolted so that the device can be slipped around the aerial pole, and is then refastened. The device is raised to the required height by means of a lifting-rod passed into the socket 4. When in position, the aerial wire is pulled taut, and the arms 5, 5 are straightened out under the pull until the serrated edges 1, 1a grip the pole firmly. Simplified constructions are also described.
Patent GB-841553-A (GB)
Title: Improvements in or relating to typewriter lifts and the like for desks
IPC: A47B21/02
Filed: 1955-03-04
Abstract: 841,553. Mounting typewriters &c. in desks. WILKES BERGER ENGINEERING CO. Ltd., (Schneider, A.). May 25, 1956 [March 4, 1955], No. 6498/55. Class 52(1) Relates to desks in which a typewriter &c. platform 4 is suspended at each side by parallel links 6, 7 from anchorage plates 5 so that it can be swung upwardly and forwardly from a stowed position, e.g. in the knee-hole of the desk, to an extended operative position. According to the invention, as the platform is swung to extended position, a portion 2 of the desk top is swung upwards and rearwards by forwardly and upwardly extending extensions 9. 11 of links 6, 7. A spring 12 is pivoted to the end of a further extension of link 7 and adjustably at 13 to the desk and is so arranged as to approach a dead centre position as the platform is swung to lowered position. Spring-loaded, hand operated catches hold the portion 2 in normal position and platform 4 in extended position. Upwardly converging ramps 21 engage the platform in its extended position to steady it.
Patent GB-435802-A (GB)
Title: Improvements relating to cans
IPC: B65D43/02
Filed: 1934-02-28
Abstract: 435,802. Lever-lid cans. BENNETT, H. J., 6, Melgund Road, Highbury, London. Feb. 28, 1934, Nos. 6520 and 14049. [Classes 66 and 125 (iii)] The seamed-on mouth-ring of a lever-lid can is carried down in contact with the inner wall for the depth of the seam, stepped inwardly at 5 to form a seat for the stepped lid 8, and finally continued downwardly at 6 parallel to the wall, the lower edge being disposed in contact with or nearly in contact with the wall. Instead of being outwardly curled as shown at 7, the edge may be flared towards an indentation 17, Fig. 2, in the can wall or the indentation may be formed of sufficient depth to meet the part 6 of the ring, the edge in such case being left depending vertically. A packing ring may be disposed between the steps of the lid and mouth-ring, and a sealing ring or capsule 13 with a tearing tab 14 may be secured over the lid. Specifications 257,998, [Class 66], 435,841, and 435,847 are referred to.