baber/WOPTO huggingface dataset:
Patent GB-948806-A (GB)
Title: Improvements in screening apparatus
IPC: B07B1/15
Filed: 1961-06-15
Abstract: 948,806. Sifting apparatus. ROSS ENGINEERS Ltd., and A. F. JONES. May 10, 1962 [June 15, 1961], No. 21607/61 Heading B2H. Screening apparatus of the kind having first and second spaced parallel screening rolls a, d respectively rotated in the same direction, the material to be screened being fed over the first roll a, which is smooth, i.e. in circumferential profile, and being carried by rotation of the rolls towards and over the second roll d, which is roughened or longitudinally ribbed. The roll d is driven in fixed bearings from a motor worm gear set f. The roll a is mounted for adjustment in bearings in arms c pivoted on a shaft b, one of the arms c being extended to provide a lever arm c<SP>1</SP> through which the pivoting of the roll a can be controlled by turning a handwheel e<SP>1</SP> secured to a screwed rod in a control apparatus e, which is as described in Specification 678,801. In the event of material jamming between the rolls, the roll a can move against the action of its own weight and against the action of a control spring or other resilient member in the control apparatus e away from the roll d to clear the jam. A sprocket on the shaft of the roll d drives a sprocket on the shaft b by a chain, and a further sprocket on this shaft drives the roll a through a further chain, so that the roll a can be moved without affecting its driving mechanism, Fig. 3 (not shown). Specification 376,273 also is referred to.
Patent GB-500265-A (GB)
Title: Improvements in electric measuring and controlling apparatus
IPC: G01R31/34
Filed: 1937-08-05
Abstract: 500,265. Power meters; electricity, supply. BRITISH. THOMSON-HOUSTON CO., Ltd., and T1ATH1'aWS, P. Aug. 5, 1937, No. 21631. [Class 37] [Also in Group XXXV] The difference between the power outputs in watts of each of a number - of parallelconnected generators, transformers, or other circuits and the average power output of the remaining circuits is directly indicated or supplied to relays for controlling the outputs of the separate circuits. As shown, alternating current generators A, B, C are connected in parallel to supply a load circuit D. The output circuit of the generator A contains a primary winding of a current transformer T having two secondary windings T1, T2. The secondary winding T2 is connected through a balancing resistor R to the current winding I of a wattmeter or relay of the centre zero type, the voltage, winding V being connected to an auxiliary bus-bar E connected to the circuit D through a potential transformer F. An auxiliary D.C. supply G connected to the moving contact of the relay supplies energy for controlling the governor adjustment. Similar current transformers, relays, and connections are provided for the generators B, C. The secondary windings T1, T<SP>1</SP>1, T<SP>11</SP>1 are connected in the series additive circuit R2 representing any number of similar additional equipments. The number , of ampere-turns of the secondary windings in each current transformer connected in the series additive circuit is so arranged that the resulting flux just neutralizes the flux in the core produced by the primary output current of its generator when this is supplying the average output. If the generator output is greater or less than the average, the difference flux energizes the current coil of the wattmeter or relay. Specification 17199/09, [Class 38 (iv)], is referred to in a disclaimer.
Patent GB-852565-A (GB)
Title: Converter system for liquefied gases
Inventor: HOWLETT REX RICHARD
IPC: B64D13/04
Filed: 1958-07-07
Abstract: 852,565. Liquefied gas converters. BRITISH OXYGEN GASES Ltd. July 6, 1959 [July 7, 1958], No. 21705/58. Class 8(2). The gas and liquid spaces of a liquefied gas container 11 are connected externally by a duct 15 which includes a two position changeover valve 16 which in its normal position connects the gas space through a pressure closing valve 17 and a pressure build-up evaporating coil 19 to a liquid delivery duct 13 leading to the main evaporator coil 14 ; the valve 16 in its other position shuts off the gas space from the liquid and vents it to atmosphere through a duct 23 projecting from the valve casing 22 which also houses a normally closed filler valve 24 actuated together with the valve 16 by a common rod 21 or coupling a filling pipe to an inlet 26 of the casing 22 to effect filling of the container through a duct 25. The pressure closing valve 17 comprises a hollow tube closed by a seating 31 at the end of a spring extended bellows 29 and having a flange 17 urged by a spring against a seating 30 at a predetermined gas pressure thereby closing the external connection between the gas and liquid spaces of the container 11. On a further pressure rise the bellows 29 is retracted sufficiently to open the valve 17 and connect the gas space of the container to the liquid delivering duct 13 through the bore 32 of valve 17 and past a non- return valve 18 associated with said valve bore 32 thereby effecting economy of use of the liquefied gas. Further pressure rise results in opening a conventional pressure relief valve 33.
Patent GB-734464-A (GB)
Title: Method of extracting carnauba-like waxes from crude montan waxes
IPC: C10G73/00
Filed: 1953-08-06
Abstract: Waxes similar to carnauba wax are obtained from crude montan wax by treating a solution of the wax in a solvent containing combined oxygen with air or other gas containing free oxygen, at 70-100 DEG C. for several hours, separating the solid particles and crystallizing a refined wax from the solution.  Solvents specified are alcohol, propanol and isobutanol.  The process may be carried out at normal or superatmospheric pressure.  Part of the resin content of the crude wax may be obtained in the refined wax by only filtering off part of the crystallized wax and evaporating off the solvent from the mixture; the wax may contain, for example, 10 per cent of resin.
Patent GB-1104619-A (GB)
Title: Improvements in or relating to proximity-detecting apparatus
IPC: G01F23/296
Filed: 1963-05-30
Abstract: 1,104,619. Proximity detector using sound waves. WM. NEILL & SON (ST. HELENS) Ltd., and J. WRIGHT. 31 Aug., 1964 [30 May, 1963], No. 21785/63. Heading H4D. In an arrangement for indicating the proximity of a surface (e.g. for indicating the level of a liquid in a container, for use as a proximity switch on a conveyer belt or for machine control) the acoustic loading of a transducer near the surface of the liquid varies with the proximity of the transducer to the surface and the variation actuates a servo system which moves the transducer to position it at a predetermined distance from the surface. In the Fig. 3 (Prov.) embodiment a loud-speaker 17 is suspended above a liquid surface by a tape wound on a motor-driven drum 22 and is energized at its unloaded resonant frequency by an oscillator comprising transistors (VT1, VT2) (Fig. 2). Increased acoustic loading of the loud-speaker 17 when close to the surface causes the driving voltage across the loud-speaker 17 to fall, and this voltage change is used to change the state of a bi-stable trigger circuit (VT4, VT5). A D.C. motor 21 driving the drum 22 is connected in a transistor bridge circuit (VT12-VT15), the transistors being switched in pairs by output signals from the bi-stable trigger circuit such that when the loud-speaker voltage has its full value the motor rotates the drum 22 to lower the loud-speaker 17, and when the loud-speaker voltage falls below a predetermined level the motor drive direction is reversed. The tape is perforated and runs over a sprocket 23 which rotates a scale 19 to indicate the position of the loud-speaker 17 and hence the liquid level. The D.C. motor may be replaced by an A.C. induction motor (M1) (Fig. 5), in which case the transistor bridge circuit (VT12-VT15) is replaced by an alternative switching circuit for reversing the motor drive direction. A longtail pair trigger circuit (Fig. 4, not shown) may replace the bi-stable trigger circuit of Fig. 2.
Patent GB-500229-A (GB)
Title: Improvements in or relating to the production of an artificial mass
IPC: C08L97/00
Filed: 1937-08-07
Abstract: 500,229. Fibrous compositions. RHEINBERGER, E. Aug. 7, 1937, No. 21794. Convention date, Aug. 7, 1936. [Class 70] Cellulose-containing material, such as waste paper, pulverized wood, straw, is treated with water-glass, and is then mixed with waste sulphite lye, or the water-glass and lye are mixed and added to the cellulose. Additions such as albumens, resins, oils, tar, rubber, glue, celluloid solutions, and solid fillers may be made and the mass moulded. According to an example, 150-500 parts of spent sulphite lye are heated and stirred with 25-75 parts of soda water-glass, 5À40 parts of calcium hydroxide are added. 950 Parts of old paper and 45-100 parts of soda water-glass are treated in a tearing machine, and the two mixes are kneaded together. 10-25 Parts of a solution of casein in alkali are mixed in, and the mass is moulded.
Patent GB-388669-A (GB)
Title: Improvements in or relating to locomotives of the diesel-electric type
IPC: B61C9/24
Filed: 1932-08-04
Abstract: 388,669. Diesel-electric locomotives. SULZER FR’RES SOC. ANON., Winterthur, Switzerland. Aug. 4, 1932, No. 21877. Convention date, April 18. [Class 79 (iii).] In an electric locomotive 1 driven by a vertical-cylinder Diesel engine 2, the generator 4 is driven through gearing 12, 13 to run at a higher speed than the engine and is arranged with its axis at a higher level than the crank shaft so that it comes within the over-all height H<1> of the engine. The generator may be driven by a pair of engines arranged either one at each end thereof or at one end side-byside in a common engine block. In such cases one or more of the gear elements embodies a yielding or spring connection and the firing strokes of the two engines are timed to distribute evenly the torque impulses.
Patent GB-1161171-A (GB)
Title: Housing for Submersible Electrical Equipment.
Inventor: JARVIS FRANK LEWIS JOHN
IPC: H04B3/04
Filed: 1967-05-11
Abstract: 1,161,171. Repeater housings. STANDARD TELEPHONES & CABLES Ltd. 9 May, 1968 [11 May, 1967], No. 21944/67. Heading H2E. A channel 10 is provided in a bulkhead 2 of a submersible housing 1 for a lead (not shown) to test electrical equipment contained in a chamber 3 and connected to a connector 11, the lead being removed and the channel 10 sealed prior to submersion. To seal the channel 10, pistons 15 and 17 and a screw 19 are inserted, the piston 15 being forced against a shoulder 14 by petroleum jelly compressed by the piston 17 actuated by screw 19. To provide a seal between the bulkhead 2 and the housing 1, a clamping ring 8 compresses an annular gasket 5, e.g. of lead; and a channel 18 is provided in the bulkhead 2 for the jelly to press two 0-rings 9. The test lead has a plug or socket contact to engage an appropriate contact of the connector 11, which has a metal flange 12 welded to the bulkhead. Having removed the lead, and before sealing, the housing 1 may be flushed by dry, low pressure gas passed through the channel 10, a channel 16, the channel 3 and a bulkhead (not shown) at the other end of the chamber 3. A main cable passes through the bulkhead 2 at 20.
Patent GB-295354-A (GB)
Title: Improvements in machines for the dry spinning of the acetone solution of cellulose acetate
IPC: B65H67/056
Filed: 1928-07-28
Abstract: 295,354. Scientifil. Aug. 10, 1927, [Convention date]. Winding-machines. - A winding-mechanism for use in a machine for dry spinning artificial silk comprises a rubber-covered driving roller 7 extending longitudinally in the machine, an axially movable rod 10 parallel thereto and for each spinning nozzle, a pair of bobbin spindles 9 carried by arms 30a, 30b loosely pivoted to the rod 10 so that each bobbin may be swung alternately into and out of frictional engagement with the driving-roller 7. Spinning can thus be carried on continuously and the winding can be started at normal spinning speeds, for example 250-400 metres per minute. An empty bobbin 6b is substituted for the full bobbin 6a by moving the rod 10 through the length of one bobbin and swinging the arms 30<a>, 30b so that the bobbin 6b is brought into engagement with the driving-roller 7 below the thread guide 8 in the position previously occupied by the bobbin 6a.
Patent GB-239366-A (GB)
Title: Improvements in annealing covers and their manufacture
IPC: C21D9/00
Filed: 1924-09-18
Abstract: 239,366. Thompson, A. E., Anslow, J. W., and Thompson (Wolverhampton), Ltd., J. Sept. 18, 1924. Annealing-boxes.-An annealing cover is formed from a single sheet 1 of metal, such. as mild steel. wrought iron &c. having oppositely disposed V-shaped portions 2, 3 cut out therefrom by bending the sheet along lines 4 - - 7, thus producing in the opposite end or side walls a V-shaped joint 11. The edges of the portions 8 - - 10 forming the joint are brought together so that they form a butt or lap joint, or they are chamfered to produce a V-shaped channel, 12, Fig. 8, the edges of the joint being welded together, as, for example, by running metal into the channel 12. The top and side walls of the cover may be provided with stiffeners as shown. Instead of V-shaped portions being cut out of the blank 1, a single rectangular or two rectangular portions and a portion of material between said portions may be cut out of the blank, aT-shaped joint or a T-shaped joint with upwardly extending portion from the end of each arm of the T being thus produced.
Patent GB-1278382-A (GB)
Title: Processing of filamentary material
IPC: C03C25/64
Filed: 1970-05-07
Abstract: 1278382 Drying material in long lengths OWENS-CORNING FIBERGLASS CORP 7 May 1970 [7 May 1969] 22068/70 Heading F4G [Also in Division D1] During the processing of flexible linear material such as filament, strand, yarn, cord, cable or rope, the material is supported by being suspended between curtains of air transverse to the longitudinal axis of the material and directed alternately upwards and downwards along a length of the material. The material may be glass fibre which, prior to passing through the curtains of air, has been impregnated and coated with material containing vulcanizable elastomers, the air being heated and drying and effecting partial vulcanization of the impregnant. Apparatus for this is as shown, the bundles of fibres C enter a furnace 11 at 17a in a horizontal mutually parallel array, are supported in the furnace by nozzles distributed alternately above and below the fibres, and exit at 19a. The furnace is divided in two by a partition 25 so that the temperatures in both parts 11a and 11b of the furnace can be separately controlled. The nozzles are fed with heated air from chambers 70, 80 which contain burners, via pumps 65 and conduits 63 to manifolds 60, 61 which feed the upper and lower arrays of nozzles. Each nozzle consists of a tube 41, along which is a slit (42, Fig. 3), side members 44 and a throttling means (Figs. 3, 4 and 6) so that the air leaves the nozzles at 9000-12,000 ft./min., and at a temperature of 450-800 F. in the chamber 116 and 450-650 F. in chamber 11a. The expended air is exhausted through ducting 21, 23 and recirculated to the burner chamber (Fig. 2). The volume of air exhausted should exceed that from the nozzles so that a negative pressure is produced in the chamber to prevent leakage of undesirable by-products of combustion from apertures 17a and 19a.
Patent GB-862372-A (GB)
Title: Aqueous elastomer dispersions and preparation thereof
IPC: C08J3/03
Filed: 1957-07-12
Abstract: An aqueous elastomer composition comprises a synthetic rubbery polymer containing 0.005 to 0.2 chemical equivalents by weight of carboxyl groups attached to polymer chains per 100 weight parts of polymer and from 0.1 to 5 weight parts of formaldehyde per 100 weight parts of said polymer, said aqueous dispersion being at a pH of from 9.0 to 11.5.  The polymers may be derived from butadiene-1,3, isoprene, 2,3-dimethyl-butadiene-1,3, piperylene or 2-neopentyl butadiene-1,3 and olefinically unsaturated carboxylic acids, e.g. acrylic acid, a -alkyl acrylic acid, crotonic acid, b -acryloxypropionic acid, a and b -vinyl acrylic acid, a -b -isopropylidene propionic acid, sorbic acid, cinnamic acid or maleic acid and may be modified by the inclusion in the monomers of e.g. acrylonitrile, styrene, alkyl alkylates, methacrylates, vinyl chloride, vinyl acetate, dichlorodifluoroethylene, vinyl pyridine, alkyl vinyl ethers, alkyl vinyl ketones and vinyl benzoate.  The polymers may also be made by carboxylating suitable synthetic rubbers.  Specified curing agents for use in the dispersions are zinc oxide, calcium oxide, cadmium oxide, magnesium oxide and sodium aluminate.  The examples describe the preparation of an aqueous dispersion of a polymer made from acrylonitrile, butadiene and methacrylic acid, formaldehyde, and as curing agent zinc oxide alone or in admixture with butyl zirnate and sulphur or sodium aluminate, the dispersions being coated on to a film or glove former previously dipped in a coagulant and cured, the shaped articles being removed from the formers.  Specifications 707,425 and 723,456 are referred to.ALSO:Synthetic rubber gloves are moulded by immersing a glove former previously dipped in a coagulant solution of calcium nitrate in ethyl alcohol in an aqueous dispersion containing formaldehyde, a polymer made from acrylonitrile, butadiene and methacrylic acid and a metal curing agent, re-immersing in the coagulant, washing and curing the film by heating.
Patent GB-332408-A (GB)
Title: Improvements in revolving signs
IPC: G09F7/22
Filed: 1929-07-18
Abstract: 332,408. Claughtons (Leeds), Ltd., and Claughton, E. July 18, 1929. Cylinders and like elements, rotating; actuating.-A windoperated revolving barber's pole comprises vanes A, bearing advertising matter, interchangeably attached to the upper end of a cylinder B constituting the pole. The device has a conical bearing C on the vanes A supported by a pointed upright spindle carried by a single bracket. The pole B may be enclosed in a glass tube.
Patent GB-320971-A (GB)
Title: Improvements in the production of riveted joints and in apparatus therefor
IPC: B21J15/36
Filed: 1928-08-01
Abstract: 320,971. De Bergue & Cio., Ltd., and Jackson, A. N. Aug. 1, 1928. Riveted joints; riveting sets and snaps; cupping. - A riveted joint for metal plates, sheets or bars and stated to be particularly adapted for use in aircraft, has the plates &c. deformed round the rivets B during the riveting operation, so that shear stress is taken by the plates themselves. The depression a may be circular, square &c., the riveting and deformation of the plates being effected simultaneouety by tools D, D', Fig. 3.
Patent GB-1521427-A (GB)
Title: Cover for an opening in a road or like surface
IPC: E02D29/14
Filed: 1976-05-28
Abstract: 1521427 Manhole covers; gratings; gulley boxes ARTHUR McLUCKIE & SON 28 May 1976 22278/76 Headings E1C and E1G To prevent theft a manhole cover or gully grating 6 seating in a frame 1 is loosely retained by a depending off-centre spigot 8 which passes through an aperture 4 in the frame 1, the spigot 8 having a head 9 larger than the aperture and being long enough to allow the grating 6 to be lifted out of its seating recess and turned about the spigot axis to afford access to the gully box. The spigot may be a bolt engaging a cast-in nut in the grating. As shown the grating and frame are rectangular with a part-cylindrical extension 7 accommodating the spigot. The gully box shown is built up from superposed sections 10, 11, 12, 1, the section 12 having a bayonet connection with a lateral discharge pipe 14. Fig. 3 (not shown) illustrates how an additional pair of inner and outer frame members (18, 17) may be positioned respectively on the flange (5) and top of the frame (1) to raise the height of the grating (6) when the road is resurfaced.
Patent GB-406714-A (GB)
Title: A process for the production of alcohols
IPC: C07C29/149
Filed: 1933-08-09
Abstract: A catalyst for the hydrogenation of aldehydes to alcohols is prepared by mixing equimolecular amounts of copper nitrate and ammonium chromate in aqueous solution and reducing the dried precipitate with hydrogen at 500 DEG  C.ALSO:In the process described in Specification 381,476 for the preparation of alcohols, the addition of a solvent is dispensed with, since the alcohol product itself acts as a dispersing agent. The same feature is also dispensed with in the process claimed in Claim 1 of Specification 385,488.  Furthermore, the calcium formate used in these processes may be replaced by another salt or salts of formic acid.  According to the examples: (1) hydrogen is forced under pressure into an autoclave containing calcium formate, the calcium salts of coco-nut oil fatty acids and a copperchromium catalyst; after maintaining the temperature at 280 DEG  C. for some time, the autoclave is cooled and the reaction product decomposed with hydrochloric acid; extraction of the mass with ether gives a product of high hydroxyl value; (2) similar treatment of a mixture of sodium formate and the sodium salts of coco-nut oil fatty acids gives rise to a similar product.  The catalyst is prepared by mixing equimolecular amounts of copper nitrate and ammonium chromate in aqueous solution and reducing the dried precipitate with hydrogen at 500 DEG  C.
Patent GB-1057380-A (GB)
Title: Method and apparatus for measuring the viscoelastic properties of pliable materials
IPC: G01N3/38
Filed: 1964-05-29
Abstract: 1,057,380. Measuring visco-elastic properties electrically. FARBENFABRIKEN BAYER A. G. May 29, 1964 [May 30, 1963], No.22368/64. Heading G1N. Visco-elastic properties of strip material, two pieces 14, 14a, Fig. 3, of which are attached to fixed supports 23, 24 and to ferromagnetic plates 15, 15a on a frame 18 which is suspended at (19), Fig. 2 (not shown) are determined by vibrating the frame along the axis of the strips and measuring the frequency dependence of the amplitude of oscillation, (i. e. plotting a frequency response). Oscillations are induced electromagnetically, e. g. by means of a coil 16, and the amplitude may be measured by an inductive pickup 17, while a dynamometer 25 measures the tension on the strips. The supports 23, 24, carrying the outer ends of the strips are displaceable in opposite directions on a screw spindle (27) to take up any permanent deformation of the strips and thereby to maintain the tension constant. The screw spindle (27) may be driven at a constant speed to give a constant speed of deformation of the specimen during the test.
Patent GB-536212-A (GB)
Title: A method of crushing ore, stone and other breakable materials and crusher built for same
IPC: B02C2/08
Filed: 1939-08-02
Abstract: 536,212. Crushers. POUPIN, A. Aug. 2, 1939. No. 22426. [Class 59] A device for crushing ore, stone, and like materials comprises two rotatable crushing heads A, B, the head A being hollow and the head B solid and located inside the hollow of the head A. The shafts 2, 5 of the heads are parallel but are not in line with one another, so that the space between the opposed faces of the heads diminishes from one side to the other. The opposed surfaces are truncated cones or hyperboloids of different sizes but of the same angle or curvature. The shafts are driven at the same speed and in the same direction, and material introduced into the widest part 14 of the space between the heads is crushed and the pulverised material passes out at the narrowest part 15. The head B may be urged resiliently toward the head A.