baber/WOPTO huggingface dataset:
Patent GB-1009152-A (GB)
Title: Phototropic glass article and method of making it
IPC: C03C4/06
Filed: 1964-02-28
Abstract: A phototropic glass body is made by melting a batch containing the constituents of AgCl and/or AgBr and/or AgI, simultaneously cooling the melt below the transformation point and shaping a glass body, thereafter irradiating at least a portion thereof with X-rays or g -rays, subjecting the body to 400-1000 DEG  C. for a time sufficient to precipitate sub-microscopic crystals of radiation-sensitive material, and cooling to room temperature. The bath may comprise, in per cent by weight:  SiO2, 40-76; Al2O3, 4-26; B2O3, 4-26; at least one alkali metal oxide in the proportions indicated, being: Li2O, 2-8; Na2O, 4-15; K2O, 6-20; Rb2O, 8-25; Cs2O, 10-30; at least one halogen in the indicated minimum proportions being: Cl, 0.2; Br, 0.1; I, 0.08; and the following minimum proportions of Ag in glasses containing the following effective halogens:  Ag, 0.2/Cl; Ag, 0.05/Br, at least 0.1 and I at least 0.08; Ag, 0.03/I, at least 0.08; the total of the above constituents being at least 85% of the total glass composition.  Other substances present may be oxides of Sn, Fe, Cn, As, Sb, P, Mg, Ca, Ba, Sr, Zn, Cd, and Pb, and F.  The X-ray exposure may be from 500 Rontgens to more than 15,000 Rontgens, the wavelengths being less than 0.5 <\>rA.  The g -ray exposures were 3.2 x 102-7.6 x 107 Rontgens, using a cobalt source and reactor fuel elements.  The exposure to radiation induced a yellow to brown colour, which disappeared below the heat-treatment temperature.  The effect of the radiation treatment may be to enhance the phototropicity of otherwise poorly phototropic glasses.  If portions only of such glass articles are exposed to the radiation treatment, the articles will on heat-treatment become phototropic only in these areas.  Such articles may be used for automobile windshields, special signs, louvres and grids, and half-tone effects. Heat-treatment times range from 1 minute at 1000 DEG  C. to 24 hours or longer at 400 DEG C. Heat-treating schedules exemplified include plunging directly into the furnace, or heating at, e.g. 4 DEG  C. per minute to furnace temperature; maintaining at furnace temperature for 30 minutes; and either removal from furnace and cooling, or cooling in the furnace. Specification 950,906 is referred to.
Patent GB-1254428-A (GB)
Title: Web cutting device
Inventor: BONTOFT FREDERICK JOHN
IPC: B26D5/32
Filed: 1968-02-21
Abstract: 1,254,428. Feeding webs; cutting; detecting faulty sheets. ILFORD Ltd. 17 Feb., 1969 [21 Feb., 1968], No. 8467/68. Heading B8R. Faulty sheets are rejected at a cutting station in response to detection of faults in a web prior to cutting, detection of a fault causing a pattern change in the first stage of a pattern shift register which change subsequently shifts through the remaining stages of the register during feeding of the web until it reaches a predetermined stage where it causes rejection of the sheet containing that fault. Apparatus.-A web A is continuously drawn from a supply roll 13 by drive rollers C 1 , C 2  past a fault detection point D, e.g., including an infra-red scanner for the web coating. The web passes into a storage area and is then fed intermittently by drive rollers J 1 , J 2  to an end stop member L; a guillotine K severs the web into sheets of a predetermined length. When rollers J 1 , J 2  are rotating, they drive the web forward at a faster speed than the speed with which rollers C 1 , C 2  feed the web into the storage area. Thus, arm F carrying free-running roller E travels slowly from position 1 to position 2 when rollers J 1 , J 2  are inoperative, and travels quickly from position 2 to position 1 during feed of the web to member L for cutting. Every time the arm F passes through position 3 on its downward path, i.e. after a sheet has been cut from the web, a pulse is transmitted to pattern shift register M. This pulse causes patterns to be transmitted from any one stage of the register to the next, and thus a pattern change caused by fault detection and initially in the first stage of the register will be transmitted through the register until, at a predetermined stage, it causes rejection of a sheet at the delivery end of the apparatus. The predetermined number of stages corresponds to the integral number of sheet lengths between stop member L and detector point D when arm F is in position 3.
Patent GB-598314-A (GB)
Title: Improved outboard propeller mechanism for boats
IPC: B63H20/16
Filed: 1945-04-06
Abstract: 598,314. Outboard propeller mechanism. HUGHES, R. M. (Murray & Tregurtha, Inc.). April 6, 1945, No. 8510. [Class 114] In a propeller mechanism for boats, carrying the propeller on a horizontal shaft 10 at the end of a vertical housing 16 carrying the driving shaft 8, the housing being mounted to turn about a vertical axis to steer the boat, the housing also swings about a pivot 18 in the top thereof so as to give the lower end a lateral offset which introduces a turning moment on the housing opposite to the turning moment resulting from the transmission of power through the vertical drive shaft 8. 'The lateral offset is produced by the top 20 of the housing bearing on a cam 26, constructed so that the turning moment produced by the offset in any position of the housing balances the' turning moment resulting from the transmission of power through the drive. Specification 568,341 is referred to.
Patent GB-278968-A (GB)
Title: Improvements in pneumatic spring suspensions for vehicles
IPC: B60G17/052
Filed: 1927-03-28
Abstract: 278,968. Caldwell, C. W. March 28, 1927. Pneumatic springs.-A pneumatic spring 4 is arranged between the frame and axle of a vehicle and is connected by a pipe 6 to a divided air reservoir 5a, 5<b>, 5<c>, with means such as hoses and clamps 8, for individually controlling the connections to the several divisions.
Patent GB-801727-A (GB)
Title: Process for the production of compositions which contain linear poly-condensates or polymers, and from which can be produced threads and fibres with reduced electrostatic charging
IPC: C08K5/01
Filed: 1956-03-19
Abstract: Linear polycondensates or polymers, e.g. polyethylene terephthalate, poly-epsilon-caprolactam or polyacrylonitrile, have added thereto 0.1 to 5 per cent of at least one methane or ethane derivative which forms a free radical having trivalent carbon, for example triphenyl chloromethane, triphenyl carbinol, diphenyl mono-diphenyl methane, phenyl-di-diphenyl methane, diphenyl-alpha-naphthyl methane, hexaphenyl ethane, hexa-(p-diphenyl) ethane, tetraphenyl-di-diphenyl ethane and diphenyl-tetra-diphenyl ethane.  The compound may be added in the form of a solution, e.g. in alpha-chloronaphthalene or 1,2,4-trichlorobenzene, or the polymeric material may itself be in the form of a solution, e.g. polyacrylonitrile in dimethyl formamide. Fibres spun from the compositions show a reduced tendency to acquire electrostatic charge.
Patent GB-460547-A (GB)
Title: Method of and device for regulating the capacity of compressors of refrigerating machines
IPC: F25B31/00
Filed: 1936-03-23
Abstract: 460,547. Regulating compressors. LEVY, F. March 23, 1936, No. 8614. Drawings to Specification. [Class 8 (i)] The capacity of a compressor can be varied by closing the suction valve before the end of the suction stroke. If the compressor is drawing from two sources at different pressures, the valve may be reopened to draw-in the supply at lower pressure. The variation may be attained by use of an axially slidable cam acting on the rod of a disc suction valve, or by use of an axially slidable rotary cylindrical valve, operated either by hand or under the influence of speed, pressure, or temperature. In a sleeve valve compressor, the eccentricity and angle of lead may be varied.
Patent GB-466441-A (GB)
Title: Appliance for setting and bandaging forearm fractures
IPC: A61F5/04
Filed: 1936-03-23
Abstract: 466,441. Surgical fracture apparatus. GRUCA, A. March 23, 1936, No. 8685. Convention date, March 22, 1935. [Class 81 (ii)] An appliance for setting and bandaging fore - arm fractures comprises an elbow fixing device provided with a horizontal supporting arm 3 capable of being locked against rotation, a counter support 2 preventing the upper arm from yielding backwards and a front supporting rod 4, and a draw device comprising a finger gripping device. 10, 18 pivoted to an arcuate yoke 7 turnable about the axis lying in the direction of the drawing force and fixable in any adjusted angular position, the draw force of a screw spindle 24 being transmitted by means of a fixable ball joint enclosed in a sleeve 21, and a clamp 20 to the yoke. In use, the two separate parts of the appliance are secured by clamps 51 to a support such as a table 5. The clamping plate 18 may be provided with a resilient lining 8 and is movable with regard to a finger grip 10 by means of screws 6<1>. The finger grip 10 may be fixed in any angular position with regard to the yoke 7 by means of a wing nut 14 and-co-operating toothed projections 13. The ball joint may be clamped by operating a screw 23 which exerts pressure on the hemispherical head of an internal bolt. This then exerts clamping pressure on the ball of the joint. The counter support 2 may be freely slidable upon the end of the horizontal supporting arm 3 which is upwardly slidable so that after the application of a bandage the counter support together with the supporting arm may be slid upon the supporting rod, and subsequently both the supporting arm and the counter support may be removed from the gypsum mass by pulling longitudinally. The supporting arm 3 may be slidably mounted on the rod and locked against rotation by means-of a pin.
Patent GB-512863-A (GB)
Title: Polarizing bodies
IPC: G02B5/30
Filed: 1938-03-22
Abstract: 512,863. Optical polarizers. KASEMANN, E. March 22, 1938, Nos. 8846. 8847, 8848, 8849 and 8350. Convention dates, March 22, 1937. April 3, 1937, April 30, 1937, June 24, 1937 and Oct. 6, 1937. [Class 97 (i)) A polarizer comprises one or more coloured transparent foils or sheets of organic material such as cellulose hydrate, which are strongly mechanically stretched so as to be capable of acting as uniaxial crystals, the colouring being such that the foil or foils exhibit a neutral grey colour. The polarizer may consist of a single foil dyed with a black dye having uniform absorption throughout the spectrum, or with a number of dyes which together produce a neutral grey; or it may consist of two or more foils dyed with different colours which subtractively give neutral grey, the several foils being superposed with their polarizing axes parallel. The foil may be made by forming an endless band by pouring a thin layer of viscose on a drum which is then placed in a coagulation bath to enable the band to be detached from the drum. The band is placed round a pair of glass &c. rollers having means for increasing their distance apart, so that an increasing stretch can be applied to the band. The pair of rollers carrying the band is passed through the various treatment baths such as desulphurization, water, bleaching, and dye baths and during all the stages it is increasingly stretched so long as it is still wet. Preferably, during the dyeing operation, the band is stretched at right angles to the direction of the micelles of the colloid while the dye is being taken up, and in the direction of the micelles after the dye has been' taken up, and while the film is still wet. The dyes selected are preferably such that the neutral grey colour is not produced until after the film has been stretched subsequently to the dyeing operation. The stretching of the foil is preferably of such magnitude as to reduce the width of the foil by about one sixth. The thickness of the foil is less than .02 mm, and preferably about .005 mm. To prevent fading, the coloured foils may be enclosed between glass plates having a high absorption for the shorter wave lengths. Specification 412,179 is referred to.
Patent GB-422157-A (GB)
Title: Improved process for the manufacture of articles of sponge rubber
IPC: B29C33/02
Filed: 1934-03-21
Abstract: A paint for application to the inner surface of a sponge-rubber mould consists of a solution of the following composition (parts by weight) in benzol:--smoked rubber sheets 100, colophony 10, stearic acid 3, sulphur 3, zinc oxide 5, mercaptobenzothiazole 0,5.ALSO:A process for making sponge rubber in which rubber introduced into a mould swells during vulcanization by heat so as to conform to the shape and size of the mould is characterized by the provision within the mould of a heat insulating lining of pulverulent material or unwoven fibrous material.  The pulverulent material may be kieselguhr, talc, magnesia, sawdust, powdered lignine, powdered leather or cork.  The unwoven fibrous material may be cotton, hemp, flax, wool, silk or asbestos, and may be comminuted.  The material may be applied by the aid of adhesive or may be shaped by hand or machine before placing in the mould.  The surface of the material may be impressed with a relief pattern and may be coloured with substances which tinge the rubber on vulcanization or with coloured rubber solutions which form a film on the surface of the vulcanized article.  The surface may be made up of fragments of cut material painted in various colours.  In an example, to the inner surface of a hot mould is applied a solution of vulcanizable rubber in benzol.  The solution dries instantaneously, and cotton or asbestos powder is spread and rolled thereon.  The excess is removed and compressed air is blown thereon.
Patent GB-181841-A (GB)
Title: Portable switch board
IPC: H01R25/00
Filed: 1921-03-23
Abstract: 181,841. McCloskey, J., and Berryman, C. C. March 23, 1921. Plug boards.-A portable switchboard, adapted for the quick connection and disconnection of a number of branch circuits, comprises an insulating base 1 carrying conducting strips such as 3, 4, 5, 6 connected to a source of power so that half of the strips are positive and half negative; the strips 3, 4, 5, 6 are provided with holes such as 27, and the base 1 is provided with correspondingly placed larger holes 28 for the reception of plug members 29 having spring conducting arms notched as shown. A branch circuit such as 30 is completed by pushing one plug 29 into a positive strip and the other plug 29 into a negative strip. In line with strips 3, 4, 5, 6 are strips 13, 14, 15, 16 connected to the main line of electric conductors 7<1>, and strips 18. Fuses 26 are attached to hooks on strips 3, 4, 5, 6 and 18, and plugs 29 which fit in notches in the adjacent ends of strips 13, 14, 15, 16 and 18, serve to connect or disconnect groups of branch circuits.
Patent GB-1082512-A (GB)
Title: Systems for automatically steering mineral mining machines
Inventor: MONKS HARRY
IPC: E21C35/06
Filed: 1963-03-06
Abstract: 1,082,512. Mineral mining machines. COAL INDUSTRY (PATENTS) Ltd. June 5, 1964 [March 6, 1963], No. 8949/63. Heading E1F. Steering of a mining machine involves a control device responsive to change in the distance of the machine from a reference surface of a mine excavation, control means sensitive to the angular orientation of the machine and steering means regulatable by the control device and control means to maintain the machine in a required relationship relative to the reference surface. The device preferably involves a feeler arm - controlled valve, the control means a pendulum - controlled valve, whilst the steering means can be hydraulically actuated jacks or extendable and retractable mechanical means between the body of the machine and skid plates.
Patent GB-827696-A (GB)
Title: A roof supporting frame for an advancing roof support system in mines
Inventor: HEMSCHEIDT HANS
IPC: E21D23/04
Filed: 1958-03-20
Abstract: 827,696. Mine roof supports. HEMSCHEIDT, H., [trading as HEMSCHEIDT MASCHINENFABRIK, H.]. March 20, 1958, No. 8960/58. Class 20(2) An advancing mine roof support comprises props 5 the feet of which are connected by spring steel strips 2 and have flat bearing springs 3 transverse to the strips 2, the ends of which springs 3 are provided with arcuately curved blocks 8 which bear on the floor, the strips 2 and springs 3 serving to restore the props to the upright. The props comprise a lower hydraulic strut 4 sliding in a middle strut 5 provided with holes for pins to carry an upper strut 6 on which are fixed roof-bars 7 pivoted together. The hydraulic valve 9 is located under the strip 2. Plastic plates may be interposed between the struts 6 and the roof bars 7.
Patent GB-353465-A (GB)
Title: Improvements in and relating to steam generators
IPC: F22D1/20
Filed: 1930-03-21
Abstract: 353,465. Heating feedwater ; heating air for combustion. ADAMSON & CO., Ltd., D., PARKYN, P. A. W., and KERFOOT, G., Engineering Works, Dukinfield, Cheshire. March 21, 1930, No. 9027. [Class 64 (i).] In a Cornish or like internally-fired shell boiler which has no side brickwork walls forming external flues, the gases after passing from the downtake 16, Fig. 10, to the front of the boiler through a bottom flue, as described for example in Specification 269,997, [Class 123 (ii), Steam generators], return to the back of the boiler through metal side trunks 36 containing air heaters 33 and water heaters 18. Air is drawn by a fan through the hollow walls 38, Fig. 13, of the downtake, and then through a duct 34 to the heater 33, from which it is delivered into the furnace. The water heaters 18 are connected to tubes 18<1>,Fig. 7, arranged at the back of the downtake and connected either with the steam and water spaces of the boiler or with the water space only. The tubes 18<1> may be surrounded by removable metal blocks 27, Fig. 9, clamped to the tubes and faced with refractory material 30.
Patent GB-179388-A (GB)
Title: Improvements in or relating to self-landing hoists or cranes
IPC: B66C7/00
Filed: 1921-03-24
Abstract: 179,388. Crowther, H. March 24, 1921. Trollies for runways.-The trolley of an overhead crane with hand-operated traversing-mechanism comprises a carriage 1 with pulleys 4, 4<1> for the hoisting rope, a second carriage 14 connected to the carriage 1 by bracing-members 13, pairs of track-wheels 2 and 15 on the carriages, and means such as an endless chain 20, and gearing 17, 16 and 10, 9 for positively driving all the track-wheels. The hoisting-rope 5 may be operated by hand or power.
Patent GB-323975-A (GB)
Title: Improvements in or relating to pulping machines for coffee and the like
IPC: A23N5/00
Filed: 1929-03-21
Abstract: 323,975. Gwatkin, F. A. S., (Faber. G.). March 21, 1929. Coffee pulping. - In a hand-operated pulping machine for coffee and the like, accelerating gearing is provided between the hand wheel and the drum. The hand wheel may drive the drum c and the feeder g<2> through gearing a<1>, b, and f, g respectively, Fig. 2; or through gearing a<1>, b<1> and b<1>, g<11> respectively, Fig. 3. In other modifications, a toothed wheel on the shaft of the hand wheel drives a wheel on the drum, and the feeder is driven either from this last wheel, or is mounted directly on a continuation of the shaft of the hand wheel.
Patent GB-710870-A (GB)
Title: Improvements in or relating to sealing means for shafts or the like passing through an opening in a liquid-filled chamber
IPC: F16J15/43
Filed: 1951-04-19
Abstract: 710,870. Stuffing-box substitutes. FARNIER, A. April 19, 1951 [April 20, 1950; April 21, 1950; April 21, 1950], No. 9209/51. Classes 110(2) and 122(5) Leakage through an orifice of small cross sectional area in a liquid-filled chamber 1, such as the annular space 4 between an orifice 2 and a member 3 extending therethrough, is stated to be prevented when the liquid pressure rises by providing, between the inside and the outside of the chamber, a capillary passage 6 which exerts a surface tension resistance to flow lower than that existing in the orifice 4 but adequate to prevent the escape of liquid therethrough in normal circumstances, the length of the capillary passage 6 being sufficient to absorb the excess volume and pressure of the liquid. In a liquid meter the flow rate is measured by a rotor 41 which is housed in a chamber 33 and transmits its motion through a reduction gear and shaft 35 to a movement housed in a separate oil-filled chamber 34 communicating with the first chamber 33 through a spiral pipe 21 having a cross sectional area which is small but larger than that of the clearance 20 of the shaft 35 where it passes through the dividing wall of the chambers. Due to the capillarity of the pipe 21 and the shaft clearance 20 oil will not escape in normal circumstances from the chamber 34 and should the oil pressure be increased by any cause, such. as heating, it is relieved by oil flowing into the pipe 21 whose length is sufficient to absorb the excess volume. At low rates of flow in the supply pipe 37 the velocity of the liquid passing the rotor 41 is increased by passing through a restricting bore 10 in a spring-loaded valve 39 closing the pipe 37. When the rate of flow and consequently pressure increases in the supply pipe 37 to a predetermined amount the valve 39 opens and establishes free communication between the supply pipe and the rotor chamber. The rotor shaft 13 is coned at its ends and runs in sapphire bearings.
Patent GB-541383-A (GB)
Title: Softening treatment of sisal and other hard fibres
IPC: D01C1/02
Filed: 1940-05-24
Abstract: 541,383. Production of cellulose. GOUROCK ROPEWORK CO., Ltd., ELKIN, H. A., and WHITE, W. A. S. May 24, 1940, No. 9226. [Class 2 (ii)] Lignified fibres such as sisal, manila, or jute, are subjected to chlorination, e.g. with acidified calcium hypochlorite, and then to treatment with a solution of an organic base containing the group =RC-N =CR- or -RHC-NH-CHR- where R is a hydrogen atom or an alkyl or amino group or other group possessing neutral or basic properties capable of replacing one atom of hydrogen but not a group such as carboxyl or phenyl possessing acidic properties. Treatment with the organic base dissolves and removes the chloro-compound of the lignin and the fibres become sufficiently softened to enable them to be spun, e.g. into yarns capable of being readily woven into canvas or the like. Preferably, the fibres are preliminarily treated with a boiling dilute aqueous alkaline solution, and after they have been treated with the organic base, they may be immersed in a solution of a sulphonated oil or similar lubricating agent. In an example, the fibres are boiled with a solution of soft soap, washed, and immersed in a solution of calcium hypochlorite buffered to a pH of 4.5. The fibres are washed and then immersed in an aqueous solution of pyridine. The pyridine is then removed with dilute acetic acid and the fibres are washed, lubricated, and dried. Instead of pyridine there may be used diethylamine, piperidine, picoline, or isoquinoline.