baber/WOPTO huggingface dataset:
Patent GB-884046-A (GB)
Title: Improvements relating to refractory bricks, methods of making same, and moulds for use in such methods
IPC: F23M5/06
Filed: 1960-03-30
Abstract: 884,046. Moulding refractory bricks. HEUER, R. P. March 30, 1960 [April 15, 1959], No. 20574/61. Divided out of 884,045. Class 87(2). [Also in Group XII] A method of making the basic refractory brick used in the construction of a furnace roof as described in Specification 884,045 using a mould having opposed relatively movable dies and side walls, one of the side walls at a position corresponding to an end of the brick having a shouldered recess, which method comprises placing in the bottom of the mould to rest on one of the dies an oxidisable metallic plate of U-section with the arms of the U extending upwardly along the corresponding side walls of the mould and a hanger tab connected to one of the arms of the U, the tab being positioned in the recess and supported by the shoulder of the recess, placing a mixture of refractory in the mould to overfill the U-section plate and applying moulding pressure by way of the dies to the refractory and plate while supporting the tab on the shoulder. The mould comprises an upper, movable die 48, Fig. 5, a lower stationary die 50 and stationary end walls 51, one of which has a recess 52 and shoulder 53 for the lower edge 54 of the hanger tab 28, Fig. 2, of the brick and a tongue 55 on the die 50 extends into the recess to close it. A U-section plate 40 having projections 56 is placed in the mould with the tab 28 on one arm of the plate fitting in the recess and an oxidisable metallic plate 46 with projections 47 is placed in the lower surface of the upper die, preferably being held by a magnetic clutch until the basic refractory mix is applied and the upper surface is moved to apply moulding pressure.
Patent GB-1153180-A (GB)
Title: Supports for shelving brackets and like fittings
Inventor: STEWART ERIC CHARLES
IPC: A47B96/06
Filed: 1966-09-29
Abstract: 1,153,180. Shelving. E. C. STEWART. 19 Sept., 1967 [29 Sept., 1966; 3 May, 1967], Nos. 43597/66 and 20575/67. Heading A4B. A panel or upright has wholly embedded in it a metal strip 7 or 30 with a plurality of vertically spaced slots 8 to selectively receive the hooked inner ends 11 of cantilever brackets 10 passed through slots in the panel or upright. In one embodiment, Figs. 1, 3, 4, the strip 7 is embedded in a batten 3 formed in two parts 13, 14 glued together at a longitudinal interface (15) with the strip 7 engaged in longitudinal slots 16 which are open at the interface. A pair of battens 3 interconnect the upper and lower ends of a rectangular frame 1, 2 of a panel which is completed by cover sheets 4, 5 and a filler 6. The panel has bushed holes 18, 19 to receive wall fixing screws 20. In another embodiment, Fig. 10, the strip 30 is secured in a recess 31 in the rear face of the panel. In an alternative mounting (Fig. 8) the panel (22) is suspended from a pair of wall brackets (23) passed through slots (24) in the strips 7. Alternatively (Fig. 9), the panel (25) forms a part of a free standing unit and may support brackets on both of its opposite faces.
Patent GB-1314084-A (GB)
Title: Polymer blends
IPC: C08F2/00
Filed: 1970-04-29
Abstract: 1314084 Ethylene polymerization to form blends E I DU PONT DE NEMOURS & CO 29 April 1970 [2 May 1969] 20643/70 Heading C3P Polymer blends are obtained by continuously polymerizing ethylene, which may be mixed with a C 3-18  alphaolefin, in two zones in which (a) a temperature of 50‹ to 230‹ C. and a catalyst of a vanadium halide or oxyhalide and an organometallic, metal or hydride reducing agent is used to give a polymer having a weight average molcular weight of at least 0À25 x 10<SP>6</SP>, preferably using a tubular reactor, and (b) a temperature of 150‹ to 350‹ C. and a catalyst, different from that used in (a) in respect of either molar ratio, chemical identity or both, of a Group IVb or Vb compound and an organometallic, metal or hydride reducing agent is used, preferably in an agitated constant environment reactor, the product of (a) being mixed with the product or the polymerizable mix in (b), prior to deactivation thereof. In examples, ethylene is homo- or copolymerized with butene-1 in the presence of VOCl 3 -triisoprenyl Al in (a) and VOCl 3 -TiCl 4 - triisoprenyl Al in (b)
Patent GB-864759-A (GB)
Title: Improvements in or relating to photographic printing apparatus
Inventor: ELPHICK GEORGE STANLEY
IPC: G03B27/72
Filed: 1957-07-01
Abstract: 864,759. Automatic frequency control systems. BUSH & RANK CINTEL Ltd. July 1, 1958 [July 1, 1957], No. 20670/57. Drawings to Specification. Class 40(5) [Also in Group XL(b)] In apparatus in which a travelling spot on a C.R.T. is used for photographic printing and in which the light passing through the negative and printing paper falls on a photo-cell which controls spot intensity, the spot is deflected by a pair of oscillators each controlling the deflection in one co-ordinate direction and "pulling" between the oscillators is avoided by feeding the output of both oscillators to a mixing circuit to produce a difference frequency signal which is rectified and fed to one of the oscillators to maintain the difference constant. Where a sawtooth is produced by an oscillator of the type in which a condenser is alternately charged and discharged, the difference signal may be applied to the grid of a valve to control the charging or discharging rate.
Patent GB-201758-A (GB)
Title: Improvements in hoppers or magazines for stacking stencil cards used in addressing machines
IPC: B41L47/14
Filed: 1922-07-28
Abstract: 201,758. Barman, L. M., and Roneo, Ltd. July 28, 1922. Addressing-machines.-Hoppers for stencil cards of an addressing-machine are formed of two parts, one fixed to the base of the machine and the other removable therefrom so that it can be used as a horizontal support for the cards, placed in this position with its load of stencils against the fixed portion of the hopper, tilted to the vertical position, and finally locked to the fixed part. The removable part comprises the back 4, sides 5, 5a, fixed top 6 and slidable bottom 11, the back 4 carrying, in bottom lugs 7a, a square shaft 8 with rounded ends adapted to engage slotted brackets 9 on the table 1 to which are fixed the front 2 and short sides 3, 3<a> of the hopper. A supporting leg 16 is pivoted to lugs 15 on the back 4. The hopper is adapted particularly for use with the stencil card drawers or containers described in Specification 201,755, the detached hopper portion being placed over the top of a drawer of stencils, and the two together positioned against the fixed parts 3, as shown in Fig. 2. The lock on the stencil drawer is then released, so that the stencils 17 are left in the hopper portion when the drawer is removed. The hopper portion is then swung into vertical position and secured by a stud 13 on the spring 12 engaging the hole 14. Finally the slidable bottom 11 is moved aside allowing the stencil cards to fall on the slidewav for withdrawal one at a time for printing.
Patent GB-835747-A (GB)
Title: Improvements in or relating to shot cleaning systems
Inventor: BRZESKI JERZY
IPC: F28G3/16
Filed: 1956-07-04
Abstract: 835,747. Injector; cleaning heat exchangers. BABCOCK & WILCOX Ltd. July 4, 1957 [July 4, 1956], No. 20691/56. Classes 71 and 99(2). In a shot cleaning system solid particles from a separator 11, Fig. 1 pass through a pipe 12 to a distributor 13 and clean the heat exchanger surfaces in vertical gas pass 2. The particles are collected in a duct 4 and pass via a shoot 5 to a collecting bin 6 which has a valved controlled outlet 7 leading to a mixing device 9 which raises the particles to the separator 11 by gas flow. The mixing device, Fig. 2, comprises a chamber 21 having an inlet nozzle 40 and an outlet tube 28 spaced from the bottom of the chamber to form an annular gap. Gas is supplied to the nozzle 40 and flows through the tube 28 containing particles fed to the chamber and raising them to the separator 11. The tube 28 may be a cylindrical tube or be formed with a venturi-shaped passage. The particle inlet 35 is preferably formed with an enlargement or box 36 forming a particle retarder means. Specifications 745,556, 745,620 and 827,202 are referred to.
Patent GB-693084-A (GB)
Title: Improvements in or relating to cases for holding and sterilizing hypodermic syringes
IPC: A61M5/00
Filed: 1951-09-04
Abstract: 693,084. Syringe cases. PALLAS, G. Sept. 4, 1951, No. 20885/51. Class 81 (ii). [Also in Group XI] A sterilising outfit for a hypodermic syringe comprises a metal box b, surrounded by a layer of asbestos with an outer facing a of plastic material, and a lid f, similarly constructed and insulated, hinged along one side of the box. The syringe parts c, d are held on a removable metal tray so that, when in the box, they are completely immersed in water contained therein. Further fittings may be provided to carry a needle. During sterilisation the lid is closed and latched and the water is boiled by an electrical heater built into the base of the box and provided with an external connection. Any excess pressure is relieved through a vent 27 and when it is desired to use the syringe it is removed by means of forceps g, normally held in clips in the lid.
Patent GB-1386305-A (GB)
Title: Flash evaporators
IPC: B01D3/06
Filed: 1972-05-05
Abstract: 1386305 Multi-stage flash evaporators HITACHI Ltd 5 May 1972 [6 May 1971] 21010/72 Heading BIB Brine or other liquid is heated in condenser tube 72 and heater 71 and is then submitted to multi-stage evaporation in a vessel 100 divided into a series of flash chambers 1, 2..5 by partition walls 11..14 each surmounting an orifice 32..35 at the base of a weir 42..45, the bottom plate of each chamber being inclined so that the liquid flows over it at great speed and shallow depth. The bottom plate may be provided with an irregular surface or steps of small height.
Patent GB-621145-A (GB)
Title: Improvements in or relating to tuning arrangements for radio receivers and the like
IPC: H03H5/02
Filed: 1946-07-13
Abstract: 621,145. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd., HOLLAND, J. D., and ROBINSON, D. D. July 13, 1946. No. 21011. [Class 40 (viii)] A frequency-selective circuit comprises four or more reactive elements, at least one of which is variable so as to tune the circuit to different frequencies within a range, and at least two of the other elements are adjusted so as to cause the overall proportional frequency deviation of the resonant frequency caused by changes in a parameter to be a predetermined amount for two settings of said variable reactance element. A mathematical demonstration is given to show that such adjustments will effect compensation for temperature variations in a circuit or can ensure that the effect of vernier tuning is roughly the same within the range of tuning of the main reactance element. In the example shown in Fig. 5, C2 is a tuning-condenser and L is a fixed inductance. Values for the remaining condensers C0 and C3 can be determined to render the overall temperature rate of variation zero at two points in the tuning range. This will render it substantially zero over the whole range. In the construction of Fig. 10, C2 is a main tuning condenser and C6 and C8 give vernier tuning, adjustment of the remaining condensers to give the same law of variation for vernier tuning at two points gives approximate uniformity of this law over the tuning range.
Patent GB-853111-A (GB)
Title: Process for the manufacture of agents suitable for making organic acetylene compounds
IPC: C07C29/42
Filed: 1959-06-18
Abstract: An acetylating agent is prepared by dissolving an alkali metal in liquid ammonia, reacting with acetylene and replacing at least part of the ammonia with an inert, anydrous, organic solvent in which the monoalkali metal acetylide is at best partially soluble. The solvent is preferably dimethylformamide or other dialkylformamide.  The agent may be reacted with aldehydes or ketones or more particularly alkyl halides.  Halides containing less than 6 carbon atoms can be added with the solvent.  After any remaining ammonia is expelled before or after adding the halide the mixture is stirred for 1/2 to 3 hours at 30-70 DEG  C.  In the examples sodium acetylide is reacted, in the presence of dimethylformamide with (1) n-octyl bromide to form n-decine-1, (2) n-decyl bromide to form a-dodecine-1, (3) n-dodecyl bromide to form n-tetradecine-1, (4) n-octedecyl bromide to form n-eicosine-1 and the preparation of n-pentadecine-1, n-hexadecine-1 and n-octadecine-1 is also referred to.
Patent GB-640381-A (GB)
Title: Cathode and method of making
IPC: H01J9/04
Filed: 1947-08-01
Abstract: A cathode of an electronic discharge device is coated with electron - emissive material from a suspension by the use of a centrifuge.  The suspension may consist of a mixture of barium, strontium and calcium carbonates in a two per cent solution of nitrocellulose in amyl acetate.  Tubular cathodes 7, surrounded with metallic mesh between the flanges 13, are shown in a centrifuge tube 14.  Wooden plugs 16 prevent entry of the suspension into the inside of the cathode.  The centrifuge is operated for 45 minutes, the clear liquid siphoned off and more suspension added up to the original level.  It is stated that when operating the centrifuge to give 715 g. for 5 hours with emissive material of particle size 2 microns, the density of the coating was 1.64 grms. per c.c.  Densities of 2.4 and 2.6 respectively were produced at a centrifuge speed giving 2250 g. for periods of 5 and 22 hours.
Patent GB-1333673-A (GB)
Title: Disposable dilution apparatus
IPC: G01N31/22
Filed: 1971-04-19
Abstract: 1333673 Spectrometry GRADKO GLASS LABORATORIES INC 19 April 1971 [4 Feb 1970] 21110/71 Heading G2J [Also in Division B1] A container of flexible plastics material is formed with collars 15, 16 projecting oppositely to one another at right-angles to the axis of the container and surrounding flexible, optically transparent windows 17, 18 for receiving telescoping cell mounts of a spectrometer. The container is part of a dilution apparatus (see Division B1-2) and has a scabbard 11 for receiving a capillary tube which, in use, takes up a sample and is placed in an opening 12 of the container so arranged that the inserted tube will not be between the windows 17, 18.
Patent GB-1014017-A (GB)
Title: Sewing method and apparatus
IPC: D05B81/00
Filed: 1964-05-21
Abstract: 1,014,017. Sewing machines. SOC RHODIACETA. May 21, 1964 [May 22,1963], No. 21111/64. Heading D1G. In a sewing machine, thread is passed around a a freely-rotatable cylinder and a brake shoe is applied to the latter for tensioning the thread only when the needle passes through an aperture in the throat plate. A brake 8, carried by a pivoted arm 9, is applied to a freely rotatable thread-tensioning cylinder 7 by means of a linkage 24 operated by a cam 23 on the arm shaft 22 when the needle 6 decends through the throat plate. It is stated that the brake shoe be actuated alternatively either by the feed dog-operating means or magnetically.
Patent GB-1064568-A (GB)
Title: A process for preparing sulphuric acid
IPC: C01B17/775
Filed: 1964-05-21
Abstract: Sulphuric acid is produced from SO2-containing gas having a temperature above 120 DEG  C. by (i) humidifying and cooling the gas to below 100 DEG  C. by direct contact with dilute H2SO4, (ii) reacting the cooled gas with oxygen and water in the presence of an adsorbent impregnated with a catalyst (as described in Specification 994,070), to produce dilute H2SO4, and (iii) drying and heating the SO2-free gas by direct contact with a portion of the hot concentrated H2SO4 obtained in (i), the remainder being removed as product.  The dilute H2SO4 produced in (ii) and (iii) is used in (i), preferably at 45-70 DEG  C. and 45-65% concentration, and the concentrated H2SO4 used in (iii) should be at at least 110 DEG  C. and 70% concentration. The SO2-containing gas may have been obtained by the combustion of fuel oil.  The adsorbent may be carbonaceous, meerschaum, or aluminium silicate, and the catalyst may be iodine, Mn, Cu, Au, Ti, Fe, Pt metal, Zn, Ni, Co, Sn, As, Cr, V, or Mo, or oxides or compounds thereof.
Patent GB-1027653-A (GB)
Title: Mixing and stirring unit
IPC: B28C5/18
Filed: 1964-05-22
Abstract: 1,027,653. Rotary drum mixers. E. G. BJORKMAN. May 22, 1964 [April 29,1963]. No. 21208/64. Heading B1C. In a rotary drum mixer the drum 1, motor 3 and reduction gearbox 4 are formed as a sunitary assembly secured by a single bolt 22 to a stirrup 10 tiltable about bolts 13. The drum may be tilted by a hand lever 24 having an abutment engageable in a toothed locking quadrant, and be mounted on a stand 5 having legs 6, 7 detachably connected at 8.
Patent GB-1393969-A (GB)
Title: Laser beam guidance devices
IPC: G01C15/00
Filed: 1972-05-08
Abstract: 1393969 Levels etc SIEMENS A G 8 May 1972 [26 May 1971] 21306/72 Heading G1F [Also in Division G2] A device for maintaining the output beam of a laser at a selected angle of inclination comprises a first mirror 3 rotatably mounted and having a setting mechanism 10 for adjusting its attitude of inclination with respect to the laser source 1 to provide the selected output inclination, and pendulously suspended below the first mirror a second mirror 5 arranged to compensate for any tilt in the laser source to maintain the selected output inclination. The pendulum comprises a spring 4 and counterweight whereby a tilt by the laser (and thus mirror 3) of an angle α results in mirror 5 rotating only through ¢ α.
Patent GB-1304196-A (GB)
IPC: B65G13/00
Filed: 1970-05-04
Abstract: 1304196 Roller conveyers ERMANCO Inc and GENERAL LOGISTICS CORP 4 May 1970 [5 May 1969] 21313/70 Heading B8A An arrangement for driving line rollers 10 of a curved path roller conveyer comprises a drive shaft 12 extending beneath the rollers, and endless resilient belts 18 coupling pulleys 16 on the shaft 12 to grooves 17 formed in the rollers. The pulleys 16 are frictionally mounted on the shaft and may therefore be positioned as desired along the shaft, and slip thereon during overload. The rollers 10 may be either cylindrical or conical, the drive pulleys being of different diameters when conical rollers are employed, to compensate for the differences in diameter of the grooves formed at different points along the cones. In another embodiment, the grooves in the rollers are replaced by slipping pulleys whereby the pulleys on the driveshaft may be fixed.
Patent GB-1304476-A (GB)
IPC: F16B13/12
Filed: 1971-04-19
Abstract: 1304476 Fixing unit A POLAK 19 April 1971 [9 Feb 1970] 21342/71 Heading F2H A connection unit 1 to be driven into a wall 2 under the action of percussion means (not shown), which may be an explosive charge, comprises an elongated body 3 with an axial channel 5 constricted at 6 towards the point 4 and enclosing a central body 7 capable of sliding in the channel 5 and of deforming the body 3 upon reaching the constricted portion 6. The channel 5 may end in a slit 8 in the body 3 giving direction to the deformation of that end upon impact of the conical end 9 of body 7 with the narrower conical end 6 of the channel 5. Compression of air in the channel 5 provides pressure and heat which assists the deformation of the body 3, but brakes the movement of the body 7, a suitable balance is achieved by allowing partial evacuation through holes 11 in the body 3 or axial channels 12 in the body 7. Deformation may also be facilitated by providing weakened regions e.g. grooves 13 allowing separation after impact of body 7. The ends of the bodies 3, 7 opposite to their points are initially interconnected by a glued membrane of paper. Of the two bodies 3, 7 either may have the greater mass.
Patent GB-380555-A (GB)
Title: Improved collapsable box or basket
IPC: B65D5/46
Filed: 1931-07-27
Abstract: 380,555. Boxes or baskets. WEST, R., 29, Evelyn Road, Walthamstow, London. July 27, 1931, No. 21351. [Class 18.] In a box or basket folded from a blank of strawboard &c. having g extensions 8 from the side walls 7 folded against the end walls 9, the extensions 8 and end walls are rectangular and the extensions are of a depth substantially equal to the depth of the end walls and are of a length greater than half the width of the box so that when folded they overlap outside the end walls to which they are then fixed by a single fastener. The end walls and extensions are each provided with a pair of slots 10, 11 respectively, the slots coinciding when the extensions are folded against the end walls and receiving the ends of soft metal clips 13, the ends being inserted from the outside and being bent down against the inner faces of the end walls. A handle 14 extends from one side of the box to the other and has a pair of slots 15 formed in each of its ends to coincide with pairs of slots 12 in the side walls 7 of the box, metal clips 13 being inserted through the slots to secure the handle to the sides of the box. The sides of the box may be provided with an internal groove for the reception of a removable lid or a lid 17, having recesses 18 to engage the handle 14 and end flanges turned down against the ends of the box, may be provided ; the lid may have a finger-hole 19 for lifting purposes.
Patent GB-517224-A (GB)
Title: Improvements in or connected with lifts, hoists and the like
IPC: B66C1/12
Filed: 1938-07-19
Abstract: 517,224. Shock-absorbing devices. MARTLEW, H., DAVIES, T. H., and MONARCH CONTROLLER CO., Ltd. July 19, 1938, No. 31377. [Class 78 (ii)] In lifts a shock absorber is positioned between the chains or ropes connecting the cage to the winding rope in such a manner that it draws the chains towards each other. The shock absorber consists of plates 1, 2; Fig. 2, which are normally held together by springs 4, 5 and are connected by pivoted arms 7 to clamps 9 engaging, the chains B, Fig. 1. The arms 7 may be connected to the plates so that they pivot in a horizontal plane instead of in a vertical plane as shown. In order that the arms may be disconnected readily from the clamps, bolts 10 may be formed with a short key at one end, which passes through keyways in the clamp and arm, and with a crank at the other end. Each bolt is turned so that the key is out of alignment with the keyway, and is held in this position by a chain connecting the crank to the clamp.. The springs may be combined with a dashpot or replaced by a hydraulic buffer.
Patent GB-203488-A (GB)
Title: Improvements in or relating to let-off motions for looms for weaving
IPC: D03D49/06
Filed: 1922-08-05
Abstract: 203,488. Taylor & Littlewood, Ltd., and Lockwood, J. Aug. 5, 1922. Letting-off warps; warp beams.-A supplementary warp beam e is mounted in vertically adjustable supports c on brackets b in rear of the loom side frames a and is driven by worm gearing h, i from the shaft j which drives the takeup motion. Fig. 1 shows a side elevation and Fig. 2 an end elevation. The supplementary beam is formed as a tube e removably fixed by a pin g to the boss f<1> of the shaft f, the shaft f resting in an adjustable open bearing n and its boss f<1> resting in an adjustable open bearing c. The take-up motion is driven through gearing k and chain m. If the take-up gearing k is altered, a corresponding change of speed is therefore transmitted to the supplementary beam e.
Patent GB-1283033-A (GB)
Title: Improvements in or relating to the treatment of asbestos
Inventor: GOLDEN JOHN
IPC: C04B20/08
Filed: 1968-05-07
Abstract: 1283033 Asbestos fibres DEFENCE SECRETARY OF STATE FOR 7 Aug 1969 [7 May 1968] 21474/68 Heading C1A Asbestos fibres are produced by contacting crude asbestos with a hot phosphoric acid and then subjecting the treated asbestos to a disruptive force sufficient to obtain the desired fibres. The acid which may be ortho-, meta- or pyrophosphoric acid is suitably contacted at 100-170‹ C. with the asbestos, which may be chrysotile, amosite or crocidolite asbestos, for a time sufficient to reduce its weight by 12-40%. The asbestos is then subjected to a mild disruptive force to produce fibres which are relatively untangled, 0À01-0À0005 cm. in dia., 0À5-0À01 cm. long, have a Young's Modulus of about 20 million lb./in.<SP>2</SP> and a hard, probably siliceous, outer coating.