baber/WOPTO huggingface dataset:
Patent GB-718630-A (GB)
Title: Method and means for the electro-deposition of chromium
IPC: C25D3/04
Filed: 1952-03-03
Abstract: 718,630. Electrodeposition of chromium. ROJAS, F. A. March 3, 1952, No. 5501/52. Class 41. Chromium is electrodeposited from an aqueous solution of chromic anhydride containing in solution a chromate or dichromate of zinc, nickel, aluminium, cadmium, copper, trivalent chromium, magnesium, tin, trivalent molybdenum, lithium, sodium or potassium, and a catalytically acting ion the concentration of which is determined by the presence of an excess, in the solid phase, of a relatively insoluble barium, strontium, calcium or silver salt which provides such ion. The latter salt may be barium or strontium sulphate, strontium fluoride or silver chloride. The additional substances may be made up into a composition for addition to a chromic anhydride solution; the composition may itself contain varying proportions of chromic anhydride. The composition may be prepared in such manner that the prescribed constituents are formed by double decomposition e.g. a mixture (i) is prepared of the sulphate and oxide of zinc, nickel or aluminium with chromic anhydride and water, and a mixture (2) is prepared of the carbonate of barium, strontium or calcium with the metallic oxide included in (i) and with chromic anhydride and water, the two mixtures then being reacted together at the boiling temperature; the sulphate and carbonate should be employed in substantially combining proportions and the quantity of chromic acid should be at least sufficient to react completely with all of the oxide and carbonate. The plating bath prepared from such a composition contains in solution chromium trioxide, dichromate of zinc, nickel or aluminium and barium, strontium or calcium sulphate together with an undissolved quantity of the sulphate. There should be 2-10 parts of zinc, nickel or aluminium to every ioo parts of chromic acid, the proportion may vary according to the hardness of the plating desired. The acid content of the bath other than that of chromic acid should be about 0.1-2 per cent, calculated as equivalent sulphate, that of chromic acid. In a modification the composition is prepared by reacting (I) a mixture of chromic anhydride and water with (2) a reaction product of barium hydroxide, aluminium sulphate and water, the proportions being such that the product consists of aluminium dichromate, barium sulphate and water without excess chromium anhydride. Similarly compositions may be prepared containing zinc dichromate with silver chloride or strontium fluoride or calcium sulphate as the relatively insoluble ingredients. Numerical examples are given. Chromium may be deposited without intervention of a nickel layer. The anode may be an alloy of 94 per cent lead and 6 per cent antimony.
Patent GB-785591-A (GB)
Title: Improvements in or relating to ionisation chambers of radiation gauges
IPC: G01N23/16
Filed: 1953-03-16
Abstract: 785,591. Ionization chambers. MOLINS, D. W., POWELL, G. F. W., and MOLINS, MACHINE CO., Ltd. June 16, 1954 [March 16, 1953], No. 5536/56. Divided out of 785,589 [Group VI]. Class 39(1). The ionization chamber of a radiation gauge has rotatable inner and outer electrodes, the outer electrode being a hollow member having a circular periphery. To determine the density of a stream of cut tobacco moving between side guides 42, Fig. 2, a radio-active source 26 is located beneath the stream and an ionization chamber 27 above it. The ionization chamber is in the form of a pulley 28 acting as a guide for the tobacco and is mounted on a hub 29 driven by a sprocket wheel 32. Outer cylindrical electrode 28 and inner electrode 36 of the ionization chamber are insulated from hub 29 and electrical connections are made to them through a slip ring 34 and a ball and socket joint 39 respectively. Specification 785,590 [Group VI] also is referred to, and Specifications 781,041 [Group XXXV] and 731,042 [Group XL(b)] are referred to in the Provisional Specification.
Patent GB-129622-A (GB)
Title: Improvements in Fasteners for Slit and other Closures.
Inventor: SUNDBACK GIDEON
IPC: A44B19/34
Filed: 1919-03-06
Abstract: 129,622. Sundback, G. March 6, 1919. Purses.-Relates to fasteners of the kind described in Specification 12261/15, [Class 44, Fastenings, Lock &c.], for closing straight or curved slits by sliding devices mounted on stringers secured to the edges of the slits. The stringers are made of fabric capable of stretching and contracting longitudinally and transversely by making the fabric with the threads arranged at angles to the. edge; the slits are closed at the ends, and the sliding devices operate both to close and open the slits. The fasteners are applicable to money belts &c. The stringers 5, 6 are attached to the folded edges of the slit and have corded edges 7 to receive the interlocking members 8, which are fastened and released by the sliding device 12.
Patent GB-705627-A (GB)
Title: An improved coupling for hoses, pipes and tubes
IPC: F16L27/107
Filed: 1952-03-04
Abstract: 705,627. Pipe joints. TOWNSEND, M. G. V., WOOD, E. B., and RHODES, D. March 4, 1952 [March 27, 1951; April 27, 1951], No. 5635/52. Class 99 (1). A flexible pipe 19 is secured to a rigid pipe by forcing it over a bead 13 on the end of pipe 10 and compressi ing it thereon by the tapered skirt 14b of a sleeve 14 which screws on to a coupling member 16. The latter is mounted on the pipe 10 by a split collet 15 held together by a circlip 18 and having a shoulder 15c engaging a recess in the member 16 and a groove engaging a bead 12 on the pipe 10. A wire 24 locks the screwed parts 14, 16 together.
Patent GB-115822-A (GB)
Title: An Improved Apparatus for Regulating the Pressure of and Cooling Compressed Air or other Fluid.
IPC: F04B39/06
Filed: 1918-04-03
Abstract: 115,822. Soc. Anon. Fonderie Officine Frejus - Automobili Diatto. April 3, 1917, [Convention date]. Regulating compression; heat of compression, absorbing.-Apparatus for regulating the pressure of and cooling compressed air or other fluid delivered by a combined engine and compressor of the kind described in Specification 115,821 comprises a collector 1, Fig. 1, with inlet pipe unions 2 for connexion to the delivery orifices of the compressor and with an outlet-duct 3 and flange 4 for connexion to a flange 18, Fig. 5, on the inlet duct 17 of a receiver 16, which serves to moderate fluctuations in the pressure of the fluid, and has an outlet duct 19 for connexion to the main reservoir for the fluid or to a duct leading to the devices using the fluid, the collector and receiver being provided with means such as water jackets or ribs for cooling the fluid, and the collector having a safety-valve. As shown, the collector has a water jacket 6 with inlet 7 and outlet 8, and the receiver has cooling-ribs 20. The safety-valve comprises a socket 9 screwed into a tapped orifice 10 in the collector 1 and a ball 11, Fig. 4, normally pressed on its seat by a plate 12' on a stem 12 and a spring 14 confined between the plate and the end of a cap 13, which is screwed into the socket 9 and secured in its adjusted position by a lock-nut 15. Fluid passing the ball escapes to the atmosphere through holes 9<11> in the socket 9.
Patent GB-815057-A (GB)
Title: Improvements in and relating to locking and release mechanisms for brakes
Inventor: KRAUSE HERBERT
IPC: G05G7/02
Filed: 1955-11-01
Abstract: 815,057. Brake locking and release mechanism. CHICAGO FORGING & MANUFACTURING CO. Nov. 1, 1955, No. 5736/58. Divided out of 815,056. Addition to 781,218. Class 103 (1). In brake locking and release mechanism of the type described in the parent Specification, the lever 48 by which manual release is carried out, is secured by nuts and bolts 46 to the lever end of lever 26, which is pivoted at 28 in an arcuate slot 30, a spring 32 wrapped around pivot 28 acting to urge the lever 18 in clockwise direction. A slight upward movement of handle 50 is sufficient to separate the locking pin 38 from serrations 40.
Patent GB-179511-A (GB)
Title: Elastic ring-shaped holder for small lamps
IPC: F21L14/00
Filed: 1922-02-27
Abstract: 179,511. Heine, F. F. May 3, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Supporting.-For mounting small lamps upon the fingers or upon tools of various shapes and thickness, the reflector R carrying the lamp is provided with an extensible band A formed of a flattened coil of wire.
Patent GB-212903-A (GB)
Title: Improvements in cutting files
IPC: B23D73/00
Filed: 1924-03-07
Abstract: 212,903. Schwarz, R. March 15, 1923, [Convention date]. Shaping curved surfaces.-Files are made with a first cut consisting of parallel waved grooves extending longitudinally as shown in Fig. 5. The file blank is mounted on the table of a planing machine and is reciprocated under a toothed cutter 22, Fig. 1, mounted on an arcuate slide 7 carried by a laterally movable slide 6 on a vertically adjustable slide 4. A rack 9 on the table drives cam or eccentric shafts 12, 17, passing through yokes 15, 20 on the slides 6, 7 respectively. The cam portions are long enough to allow for the full vertical travel of the slide 4, the cam 14 imparts a lateral reciprocation to the slide 6 to produce the waved form and the cam 19 oscillates the arcuate slide to maintain the cutter normal to the cut.
Patent GB-372007-A (GB)
Title: Improvements in and relating to temperature control systems
IPC: G05D23/22
Filed: 1931-02-25
Abstract: 372,007. Thermostats. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Kelly, H. R.; R.D. No. 4, Schenectady, New York, U.S.A.) Feb. 25, 1931, No. 5935. Convention date, Feb. 26, 1930. [Class 64 (ii).] An automatic temperature control system comprises a temperature-responsive device and a galvanometer operated thereby, controlling the exposure of a photo-electric cell to a source of light, the current traversing the photoelectric cell being applied to the grid circuit of a three-element vapour electric discharge device such as that known under the registered Trade Mark " Thyratron," which controls a heating circuit. An electric furnace 10 is heated by a resistance 11 supplied through a switch 12 which is biased to the open position by a spring 14 and closed by an electromagnet 15. A thermocouple 19 is connected to the moving coil 20 of a galvanometer having a pointer 35'integral with an arcuate strip 36. A photo-electric cell 16 and lamp 18 are mounted in a common structure carried by a rod 24 rotatable in the same axis as the galvanometer pointer. The strip 36 is adapted, at a predetermined temperature, to intercept the light passing from the lamp 18 to the cell 16, and the temperature at which this occurs may be varied by rotating the lamp structure about its axis, until the pointer 37 indicates the desired temperature on the scale 38. The electric discharge device 17 is of the kind which forms a mercury vapour arc between the anode 40 and cathode 41 at certain critical voltages on the grid 42, the arc continuing independently of the grid voltage as long as the anode is positive. The arc is prevented from starting when the grid voltage is more negative than a critical value. The device 17 is energized from the central section 50 of a transformer 49, and the cell 16 is connected so as to vary the phase of the grid voltage with respect to the anode voltage. A resistance 44, condenser 46, and grid leak 52 are connected as shown. When the discharge device operates, a pulsating current passes through the coil 15 and the switch 12 closes to energize the heater 11. In a modified construction, Fig. 2, the index 55 of the galvanometer carries a mirror 56 which controls the reflection of light from a source 57 to a photo-electric cell 58, which is adjustable along a graduated slot 60. Specifications 255,405, [Class 64 (ii), Heating systems &c.], and 357,572, [Group XL], are referred to.
Patent GB-617172-A (GB)
Title: A colorimeter for use in the identification of postage stamps
IPC: G01N21/29
Filed: 1946-02-26
Abstract: 617,172. Colorimeters. DEMOUSSY, G. Feb. 26, 1946, No. 5989. Convention date, May 23, 1944. [Class 97 (i)] [Also in Group XV] In order to identify a postage stamp by its colour and shade of colour, a booklet, as shown, comprises several differently coloured paper sheets a, each sheet being coloured only on one side, while on the other side of the sheet are printed the sheet number, the issuing country and value of a particular stamp having the colour of the sheet and the names of countries issuing stamps of that colour. Each sheet has one or more openings c, preferably circular, through which an area of a postage stamp may be observed and its colour compared with that of the sheet. The pages are bound together as at f and the booklet also includes, either on the inner surface of one cover or on one page, a colour index.
Patent GB-476421-A (GB)
Title: Improvements in or relating to liquid refiners and method for refining liquids
IPC: C10M175/00
Filed: 1936-03-04
Abstract: <PICT:0476421/III/1> <PICT:0476421/III/2> The liquid refiner and refining element according to the parent Specification is modified by the use of acid-activated, e.g. sulphuric acid-activated, adsorbent material.  The material may be clay, to which some sulphuric acid may be left adhering. Limestone wool may be used as the fibrous material. As shown in Fig. 1, the refiner consists of an outer casing containing a shell 106 provided with slots 111 and lined with fibrous material 146 held in position by a screen 147.  At each end of the shell 106, anti-channelling members 114, 115 are secured.  An oil inlet 134 leads to an oil-distributing shell comprising a wire helix 121 covered with large-mesh fabric 149.  The space between the fabric 149 and the screen 147 is filled with the refining material 151. In operation, oil entering at 134 passes through the refining element to the space 164 between the casing and the shell 106, through the screen 140 and out at 138.  As shown in Fig. 3, the refiner consists of a shell 170, provided with an oil inlet 183a leading to an oil-distributing shell, comprising a spring 179 covered with fabric 182, at the bottom end of which is an anti-channelling member 180. Compartments, filled with refining material 184, 192, are formed by one or more arch slotted walls 191, 194.  The top wall 194 is lined with layers of fabric 196 secured between screens 195, 197 and the space 200 communicates with the outlet 205.
Patent GB-549300-A (GB)
Title: Improvements in or relating to fluid pressure servo devices
IPC: B60T13/24
Filed: 1941-05-12
Abstract: 549,300. Fluid-pressure servomotor controlsystems. CLAYTON DEWANDRE CO., Ltd., and EDGE, S. H. May 12, 1941, No. 6112. [Class 135] [Also in Group XXXIV] A servo device operated by fluid pressure has differential piston areas upon which the pressure fluid can act, the smaller area being always under pressure tending to maintain the piston inoperative until overcome by admission through a manually controlled valve of pressure fluid to act upon the larger piston area to transmit movement to the device which is under control. Fig. 1 shows a piston 6 at the end of its return stroke, with a rod 21 connected to a brake, clutch or other device. A skirt portion 25 of the piston 6 provides an annular space 24 in the cylinder 7 to which the fluid pressure reservoir 14 is connected so as always to exert pressure upon the piston annulus 22 and so provide a return force for the piston 6. Channels 16 open to space 24 supply pressure fluid through a valve 12 within the piston 6, to the chamber 20 at the back of the piston 6 to operate the brake &c. when the valve is opened by the action of a pedal 2 upon a hollow plunger 4, a port 9 of the plunger normally affording passage from space 20 to exhaust being closed by the end of the valve stem 10 at the beginning of the valve opening. In another construction shown in Fig. 3 the fluid pressure from a reservoir 40 exerts the returning force upon hollow extension 44 of the main piston 36 the controlling valve 34 being situated at the inner end of the extension 44. The piston 36 is connected to the operating rod 32 by a pivoted lever 30 connected to the piston rod 46.
Patent GB-1059307-A (GB)
Title: Improvements in electrostatic loudspeakers
IPC: H04R19/02
Filed: 1965-02-12
Abstract: 1,059,307. Electrostatic loud-speakers. A. SHACKMAN. April 30, 1965 [Feb. 12, 1965], No. 6155/65. Heading H4J. An electrostatic loudspeaker assembly comprises two outer rigid perforated zinc plates 1, 2 and an inner rigid perforated zinc plate 3. Plates 1 and 2 are parallel. but may be of overall non- plane shape, e.g. part-cylindrical. Intermediate flexible diaphragms 4, 5 of non-conductive plastics film are each metallized on that surface 4a, 5a which faces towards the inner plate 3. Their opposite surfaces, facing  plates 1. 2, are non-conductive. Lengths of cotton 6a are secured along and in contact with both faces of the inner plate 3 at parallel positions. Similarly, lengths of cotton 6b are secured along and in contact with the non-conductive outer surface of each diaphragm 4, 5. The lengths of cotton may be portions of continuous filaments. The assembly is in the form of a lightly compressed sandwich without any spacing other than that dictated by the thickness of the cottons 6a, 6b. The surfaces 4a, 5a are in touching and electrical contact with the inner plate 3 except where they are held away by cotton 6a. The assembly is connected as shown to a transformer T, the primary winding P of which is connected to an audio-frequency source. The centre tap of the secondary winding S is connected to the negative pole of a D.C. polarizing voltage. The positive pole is connected through a 10 megohm resistor R to the inner plate 3.
Patent GB-1245972-A (GB)
Title: Improvements in or relating to circuit arrangements
Inventor: BENNETT CHRISTOPHER JOHN
IPC: H01L23/522
Filed: 1968-02-08
Abstract: 1,245,972. Printed circuits. MARCONI CO. Ltd. 14 Jan., 1969 [8 Feb., 1968], No. 6204/68. Heading H1R. In a printed circuit cross-over in which two conductors are insulated from each other by a localized patch of insulating material at least the conductor over which the patch lies is of reduced height in the region of the patch compared with its height elsewhere along its length. A glass substrate 2 has continuous layers of first aluminium and chromium deposited thereon which are etched to partly form conductor 1, consisting of a continuous strip and conductor 3 in the form of a strip having a gap through which conductor 1 passes. A layer of silicon dioxide deposited over the whole substrate is then etched to form patch 5 of insulating material. After deposition of a further continuous layer of aluminium over the whole substrate the layer is etched to leave the pattern shown in Figs. 5, 6 in which the conductors 1, 3 are built up by part 6 to their required thickness on either side of the patch 5. In a second embodiment Figs. 7, 8, 9 (not shown) only the partly formed conductor 1 is made prior to the insulating layer 5 being deposited and conductors 6, 7 are formed after deposition of the insulation patch to the desired conductor thickness. In this case the conductor 6 is not of reduced thickness at the cross-over point. Reference has been directed by the Comptroller to Specification 1,099,797.
Patent GB-471198-A (GB)
Title: Improvements in and relating to gun-carriages
IPC: F41A23/28
Filed: 1936-03-02
Abstract: 471,198. Steering vehicles. WOOD, J. M. D. March 2, 1936, No. 6249. [Class 79 (v)] [Also in Group XXI] The pairs of wheels f on either side of a gun-carriage a are coupled together to pivot about a common horizontal pivot or trunnion, and the axle of each wheel is rotatable about a vertical centre line so that the wheels may be disposed in planes tangential to a common circle. In this position, the wheels may be used to traverse the gun. In the construction shown, each wheel is mounted on a stub axle g, Fig. 5, which pivots about a pin e<1> on an axle e. The axles e are fitted to arms or brackets d mounted on the ends of a triangular casting c, Fig. 2, which pivots on the axle b of the gun carriage. The two wheels on each casting are interconnected by steering rods i<1>, i<2>, which are connected to opposite arms of a two-armed lever and to lever arms h on the stub axles. The rods are actuated by steering handles k<1> through worm gearing,thegear boxes of which are mounted on the rear axle. Knife edges m<1> on spring-pressed plungers m fit into correspondingly shaped blocks m<2> when the wheels are in the normal travelling position. The movements of the wheels about the axle b are limited by means comprising links n, Fig. 4, which are pivotally connected to pins e<2> on the rear axles e and which slidably receive the end sleeves o of a transverse bar p on the gun trail a<1>. When the wheels encounter an obstruction the sleeves strike rubber buffers r carried by the lower ends of the links.
Patent GB-295197-A (GB)
Title: Improved means for drilling holes in buttons, dice and the like
IPC: B29D23/14
Filed: 1928-02-28
Abstract: 295,197. Pondorf, H.-J. Sept. 2, 1927, [Convention date]. Drilling - machines. - Buttons, dice and other objects requiring a number of holes at small centre distances are drilled in a multiple spindle machine with inclined spindles d journaled in a head a and driven by a common pulley c having a barrelled friction surface e engaging cones d on the spindles. Coarse adjustment for centre distance is obtained by varying the projection of the drills from the spindles and fine adjustment by adjusting the cones d which are screwed on the spindles and provided with lock nuts. For this purpose the pulley is removed from driving engagement by rocking back the arm g on which the pulley is adjustably mounted at i. In a modification the internal surface e is replaced by a male cone. In a further modification, when fewer spindles are required, these may all be on one side of the driving pulley which may then be disengaged by a lateral movement. Toothed gearing may be employed.
Patent GB-434649-A (GB)
Title: Improvements in or relating to calendars
IPC: G09D3/08
Filed: 1935-02-27
Abstract: 434,649. Calendars. HANDY THINGS, Ltd., and HANROTT, H. C., 91, Petty France, Westminster. Feb. 27, 1935, No. 6297. Addition to 348,038. [Class 106 iv] A block of monthly calendar sheets 3 is attached to a member 1 secured to another member 6 rotatably carrying a transparent disc 9 having cancellation lines 13 ending in rings 14. The members 1, 6 are normally held together by a catch 11 and are opened as shown in Fig. 2 when a calendar sheet is to be torn off. Specification 429,602 is referred to.
Patent GB-1293941-A (GB)
Title: Method of and apparatus for controlling the state of cure of curable articles
Inventor: GOULD ERIC GORDIN
IPC: B29C35/02
Filed: 1969-02-06
Abstract: 1293941 Moulding tyres DUNLOP HOLDINGS Ltd 4 Feb 1970 [6 Feb 1969] 6388/69 Heading B5A [Also in Division C3] A steam-heated tyre mould 4 is provided with a channel 5 in the mould wall, said channel accommodating a temperature sensing probe 6 attached to mould segment 7. The probe comprises a thermocouple 8 sheathed in a stainless steel tube 9 with mineral insulation and reinforced by steel tube 10. A thermo-junotion 11 is provided. Thermocouple 12 is in an alternative position. The local temperature of the shoulder region of the tyre is monitored during moulding as a continuous function of time, the change in the total state of cure being integrated continuously by an analogue computer. When a predetermined overall change in the state of cure has been achieved, the computer actuates a valve mechanism which shuts off the steam supply and also actuates a mould-opening mechanism. In a mould of the twin type, each tyre is provided with a temperature sensing probe, both probes being connected to the computer. The probe may be located at a position corresponding to the crown of the tyre tread or in a bead region, instead of the shoulder region. A resistance thermometer may be used in place of the thermocouple.