baber/WOPTO huggingface dataset:
Patent GB-211002-A (GB)
Title: Improvements in or relating to separating, screening or sifting apparatus
IPC: B07B1/42
Filed: 1923-02-21
Abstract: 211,002. Harris, R. P. Feb. 21, 1923. Reciprocating sieves. - A single or multiple screen f, g is freely suspended by springs e from a reciprocating carrier a, and stops h, i which may be adjustable are provided to limit the movements of the screen relative to the carrier. The stops i may have curved surfaces as shown, and the springs e are preferably connected to the screen by a short length of chain. In the apparatus described, the material that passes through the upper screen f, g may be further treated in another screen p of usual construction or mounted in a reciprocating carrier r in the same manner as the upper screen.
Patent GB-290760-A (GB)
Title: Improvements in portable babies' cribs or cots
IPC: A47D7/04
Filed: 1927-02-23
Abstract: 290,760. Ellis, A. Feb. 23, 1927. Bedstead adjustments; spring mountings for beds.-The body of a baby's cot is mounted on blade springs 4 secured to a rectangular framework 6. The framework is carried on U-shaped legs 8 which are vertically adjustable and are held in position by thumbscrews 11 in the corner brackets 5 of the framework.
Patent GB-765265-A (GB)
Title: Improvements in or relating to screens, for producing an electron image
IPC: H01J29/38
Filed: 1955-02-22
Abstract: 765,265. Cathode-ray tubes. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Feb. 22, 1955 [Feb. 26, 1954], No. 5217/55. Class 39(1). A screen for converting e.g. an X-ray image into an electron image in an intensifier tube consists of a glass plate with a thin central area bearing on one side a phosphor 2 and on the other side a transparent conductive layer 3 and a photoelectric layer 4 ; the thin central area is produced by immersing the plate in hydrofluoric acid while the rear side and the edges are protected by a coating of e.g. cellulose acetate, cellulose acetate butyrate, beeswax or ceresin wax. Nitric or sulphuric acid may be added to the hydrofluoric. The plate is supported so that its convex face dips just below the surface of the acid, and during the process it is rotated. The protective coating is applied after the conductive layer is formed e.g. by spraying the glass while hot with stannous chloride, and is removed before applying the phosphor.
Patent GB-927458-A (GB)
Title: Improvements relating to loudspeaker enclosures
IPC: H04R1/28
Filed: 1959-02-16
Abstract: 927,458. Loud-speaker enclosures. F. B. EARNSHAW. Jan. 13, 1960 [Feb. 16, 1959], No. 5238/59. Class 40 (4). [Also in Group XXXVIII] A loud-speaker enclosure consists of a hollow column 2 having an opening 4 at one end, adjacent which is mounted a loud-speaker 5, and a second opening 12 at its other end, at least part of the column between the location of the loud-speaker and the other end being subdivided into a plurality of passages extending longitudinally of the column 2. As described, the column is of square cross-section and of wood, and at its lower end a square board 6 is fixed by metal pins 7 at its corners, a hollow pyramidical reflector 8 of glass being mounted on the board 6. The column 2 contains a large number of closely packed cardboard tubes 10 of circular cross-section which are supported on a wire mesh 13.
Patent GB-770998-A (GB)
Title: Electrolytic grinding apparatus
IPC: B23H5/08
Filed: 1954-02-24
Abstract: 770,998. Automatic control systems for electrolytic grinders. NORTON GRINDING WHEEL CO., Ltd. Feb. 24, 1954 [March 16, 1953], No. 5414/54. Class 38 (4). The invention relates to automatic load current limiting in an electrolytic grinder. The circuit of the work W and a conducting ring CR1 on the grinding wheel is supplied from a bridge rectifier RB energized over a transformer TR from the voltage drip across series saturable inductor windings L1, L2. These windings are connected in series with a capacitor C across an A.C. source 73, and a D.C. control winding 78 for the inductor carries the load current. The inductor is so constructed that over the desired operating range its reactance is inversely proportional to the load or control current, whereby the load voltage is maintained substantially constant with changes in load current unless a desired limiting value is approached, in which case a resulting tendency for the load voltage to decrease results in the limitation of load current below the desired value. A theoretical analysis of the circuit is given in support of this limiting action.
Patent GB-526746-A (GB)
Title: Improvements in and connected with radiant heat tube furnaces
IPC: F23C3/00
Filed: 1939-02-18
Abstract: 526,746. Radiant tube furnaces. JONES, W. L. (Electric Furnace Co.). Feb. 18, 1939, No. 5437. [Class 51 (i)] In a radiant heat tube furnace there is provided a radiant tube 1 having a burner 4 at one end and within it an air supply pipe 5 with peripheral groups of air holes decreasingly spaced or of increasing total area with distance from the burner. Uniform radiation of heat is thus obtained. The number, diameter and shape of the holes may be varied. The holes nearest the outlet have preferably at least twice the total area of those nearest the burner. The tube is loosely mounted across opposite walls of a furnace, a collar 6 allowing for expansion. A recuperator 15 preheats the air supply.
Patent GB-422745-A (GB)
Title: Improvements in and relating to holders for dental instruments
IPC: A61C1/14
Filed: 1934-02-19
Abstract: 422,745. Sockets. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT VORM. ROESSLER, Frankfort-on-Main, Germany. Feb. 19, 1934, No. 5455. Convention date, June 1, 1933. [Class 83 (iii)] [See also Group VI] In a holder for drills or other dental instruments of the type comprising a roller or ball located in a cavity in the holder and a slidable sleeve normally held by a spring in a positior in which the roller or ball engages a flat or recess in the tool shank, the spring continuously presses the roller or ball through the agency of the sleeve against the flat or recess. A drill 8 is rotated by the shaft 6 by means of engaging flats 17, 7. The shaft is driven through co-operating driving members 4, 5. A spring 10 abuts an annular shoulder 9 on the shaft 6 and the inner face of a displaceable sleeve 11, provided with a recess 18 and an inclined surface 15 which normally presses a ball 13 into a recess 12 in the shaft, so that it projects into an annular groove 16 in the drill. To release the drill, pressure is applied against the face 14 of the sleeve 11. Several balls, for example three, may be employed, when the flats 17, 7 can be omitted. Rollers or other rolling bodies may be used in place of balls, and a roller may be arranged to replace the flat 7 on the shaft. A number of recesses may be provided instead of the groove 16. A similar construction may be used for coupling the axle 3 with an elbowpiece.
Patent GB-901095-A (GB)
Title: Improvements in or relating to vehicle suspension systems
IPC: B61F5/10
Filed: 1960-02-16
Abstract: 901,095. Pneumatic spring suspensions; adjusting body heights. WERKSPOOR N.V. Feb. 16, 1960 [Feb. 24, 1959], No. 5469/60. Class 108(2). A vehicle has at least two pairs 9 and 10, 11 and 12 of pneumatic suspension units s or groups of such units supporting its frame which is allowed thereby to move relatively of the units in both the horizontal and vertical directions, the height of the frame supported by each unit or group being maintained at a chosen value, and the units or groups are mounted on the vehicle so that the lines of action of each pair, 9 and 10 or 11 and 12, intersect (at A) in a plane perpendicular to the horizontal axis 11 of the vehicle. Means (not shown) are provided to adjust the strength of reaction of the suspension units in response to a change in position of the frame relative to the units.
Patent GB-1519954-A (GB)
Title: Velocity measuring apparatus
IPC: G01P3/52
Filed: 1975-06-26
Abstract: 1519954 Measuring velocity electrically NATIONAL RESEARCH DEVELOPMENT CORP 26 June 1975 [26 June 1974] 05470/78 Divided out of 1519953 Heading G1N The Specification repeats portions of the description in Specification 1519953, but the claims relate to apparatus for generating a velocity signal representative of the rate of change of an electrical capacity. In the arrangement shown, a battery 58 charges a capacitor C 2  through a resistor 59, the capacity of C 2  varying with the movement of a conductor (26), Fig. 4a (not shown). The voltage # across the resistor 59 provides a velocity signal representing dC 2 /d t
Patent GB-903342-A (GB)
Title: Improvements relating to heat detectors
Inventor: MINNS GEOFFREY JOHN
IPC: G08B17/06
Filed: 1960-02-16
Abstract: 903,342. Thermal switches. PYRENE CO. Ltd. Feb. 16, 1961 [Feb. 16, 1960], No. 5476/60. Class 38 (5). [Also in Group XXXVIII] In a temperature alarm (see Group XXXVIII) of the type in which the fusing of a metal bridges two electrodes and thereby completes an alarm circuit, the inside of a container 1, which may form one electrode, is partly or completely covered with the fusible metal 5 which is spaced from a central electrode 2 by insulating plugs 3 and 4, and the arrangement is such that when all the fusible metal has melted, the electrodes will be bridged no matter what position the container may be in. Fins 6 help to increase the rate of transfer of heat from the atmosphere to the alarm device. An alternative form of construction is described with reference to Fig. 2 (not shown), and it is stated that two electrodes may be used inside the container, the latter in this case not necessarily forming part of the alarm circuit. The fusible metal may be an alloy of bismuth-leadtin or of tin-lead having a melting point in the range 58‹ to 183‹ C.
Patent GB-869597-A (GB)
Title: Improvements in vehicles driven by a gas turbine power plant, and in particular in track-laying vehicles such as tanks
IPC: B60K3/04
Filed: 1960-02-16
Abstract: 869,597. Motor vehicles. BREVETS AEROMECANIQUES S.A. Feb. 16, 1960 [March 5, 1959], No. 5502/60. Classes 79(2) and 79(3). A vehicle, e.g. an endless track vehicle, having a driving wheel axle perpendicular to the fore-and-aft direction of the vehicle, is driven by a gas turbine power plant including an air compressor the rotor of which is coaxial with the power turbine, the axis of which is transverse to the fore-and-aft direction of the vehicle and the power plant being located above the wheel axle casing, the air intake and gas exhaust being located on opposite sides' of the vehicle. The endless tracks 2 of a vehicle, e.g. a tank, are driven by wheels 3 supported on an axle contained within a casing 4. The power unit comprises a power turbine 5, a compressor 7 driven by a turbine 6 and a combustion chamber 7a to which fuel is fed by conventional means. The power turbine shaft 8 and compressor shaft 9 are coaxial and independent of one another. The axis of the power unit may be off-set towards the front of the vehicle relative to the axis of the driving axle so that the plane containing these axes makes an angle of more than 20 degrees and less than 90 degrees with the vertical. The driving axle is driven through clutches 20 and 22 from a shaft 15. The change speed and track steering gears are located in the casing 4, power for a steering mechanism 25 being taken from the shaft 15 through pinions 23 and 24. The fuel tank 14 may be located beneath the power unit. The air intake duct 10 and gas exhaust 11 may be slightly upwardly inclined and protected by shields 12 and 13.
Patent GB-643546-A (GB)
Title: Improvements in agglutinogen derived from whooping cough organisms
IPC: A61K39/10
Filed: 1948-02-24
Abstract: A reagent useful for determining susceptibility to whooping cough by a skintest technique or for immunizing against whooping cough is prepared by disintegrating, without denaturation of the proteins or other constituents, organisms which cause whooping cough, forming an aqueous extract thereof, separating the agglutinogen from the toxins in the extract by precipitation, and purifying the agglutinogen.  The disintegration may be effected by sonic vibrations as described in U.S.A. Specification 2,230,997 or by a ball mill disintegration of organisms desiccated at a very low temperature.  The toxin may be precipitated from an aqueous extract derived from phase I haemophilus pertussis by adjustment of the pH to 4.5 followed by further precipiation at pH 3.9 and 3.0 or by the addition of 25 per cent of ammonium sulphate.  Alternatively, with some strains of B parapertussis, the agglutinogen itself may be precipitated by adjusting the pH to 4-4.5 provided the solution has been previously dialysed free from salt.  According to an example, phase I, H pertussis from a Bordet-Gengon culture medium were disintegrated by sonic vibrations and centrifuged to remove cellular debris.  The liquid was adjusted to pH 4.5 by hydrochloric acid and the resulting toxin precipitate removed and washed.  The combined washings and filtrate were then brought to pH 3.9 by addition of further hydrochloric acid, the further toxin precipitate being removed and washed.  The pH of the combined washings and filtrate was then brought to pH 3.0 to produce a further toxin precipitate which was treated as before.  The combined washings and filtrate was then adjusted to pH 7.0 by the slow addition of sodium hydroxide with agitation, the slight precipitate at pH 5.4-6.4 being centrifugally removed.  The clear, slightly yellow liquid contained pertussis agglutinogen free from p  toxins.  The agglutinogen was precipitated by the addition of a saturated ammonium sulphate solution, and after washing the solution in water and dialysis, was precipitated by the addition of saturated picric acid solution.
Patent GB-547020-A (GB)
Title: Improvements relating to oil filters
IPC: B01D39/18
Filed: 1941-04-29
Abstract: 547,020. Liquids, filtering media for. HALSTEAD, P. E. April 29,1941, No. 5535. [Class 46] [Also in Group III] An oil filter, particularly for lubricating oils, comprises a mass of porous material such as cotton waste impregnated during its manufacture with a salt of an amine having at least one N-substituted hydroxyalkyl group. The salts are preferably derived from mono, di-, and tri-alkanolamines, and from alkylene di- and polyamines containing at least one N-substituted hydroxyalkyl group. Suitable amines comprise inono, di, and tri-ethanolamines, N.di-hydroxyethylmethylenediamine, N.tetra-hydroxyethylmethylenediamine, N.di-hydroxyethylethylenediamine, and N.di-hydroxyethyltriethylenetetramine. The acids from which the salts are derived are preferably organic acids, particularly saturated or unsaturated monobasic aliphatic acids such as stearic, oleic, and ricinoleic acids. Salts specified comprise triethanolamine-oleate and triethanolaminestearate. The filter is preferably housed in a removable cartridge adapted to be inserted in a container connected to the oil flow line.
Patent GB-945880-A (GB)
Title: Liquid fuel combustion apparatus
Inventor: SMITH JOHN
IPC: F23D11/00
Filed: 1960-02-17
Abstract: 945,880. Burners. JOSEPH LUCAS (INDUSTRIES) Ltd. May 12, 1961 [Feb. 17, 1960], No. 5577/60. Heading F4T. [Also in Division F1] In a combustion apparatus comprising a liquid fuel burner 12 mounted at one end of a sheet metal combustion chamber 6 and an air swirler 19, 20 surrounding the burner, gaseous fuel can be discharged into the combustion chamber through circular rows of holes in a nose piece 13 surrounding the liquid fuel burner 12. The gas is supplied to an inlet 18 and passes through an annular chamber 17 to the discharge holes. The nose piece 13 also has inclined slots for discharging air around the liquid fuel burner. The air swirler comprises a pair of spaced annular discs 19, 20 between which extend spaced tangential vanes. The combustion chamber is surrounded by a sheet metal cylindrical casing 7 having an air inlet intermediate the ends of the combustion chamber. Holes 24 in the combustion chamber supply secondary and dilution air and a scoop comprising sleeves 25, 26 directs the air in the outer casing 7 to the holes 24. In a modification the gas is supplied to bores in the swirl vanes of the air swirler and is discharged through apertures in the vanes.
Patent GB-1087196-A (GB)
Title: Improvements in or relating to the attaching of cutting tips to shanks or bodies of cutting blades and loopers for carpet making
Inventor: NEALE RICHARD BERNARD
IPC: B23K31/02
Filed: 1964-02-11
Abstract: 1,087,196. Soldering. DOCK GRINDING & ENGINEERING CO. Ltd. Jan. 29, 1965 [Feb. 11, 1964], No. 5580/64. Heading B3R. [Also in Division D1] In attaching a cutting tip to the shank or body of a cutting blade or looper for carpet making, the surfaces to be joined are each formed with angularly related portions which make an obtuse angle with each other and a metal shim is soldered to the surfaces. A knife or cutting device tip 12 is joined to a straight shank 13 at a joint surface having two angularly related portions by holding the shank on a table 18 by a toggle clamp 19, holding the tip 12 to a table 24 by a toggle clamp 26, placing a strip 30, comprising a central copper shim disposed between layers of silver solder, between the tip and shank and moving the table 24 fowards so that the strip is caused to adopt the shape of the surface to be joined. A flux of borax in water is brushed on to the surfaces and an oxyacetylene flame is employed to effect soldering by playing on the tip 12. The tip may be of 80% tungsten carbide, 20% cobalt and the shank may be of carbon spring steel. A looper tip may be of 90% tungsten carbide, 10% cobalt and the shank of carbon steel. A looper is described in which the joint surfaces have portions inclined at 135 degrees to one another.
Patent GB-858450-A (GB)
Title: Printing press cylinder drive control means
IPC: B41F3/20
Filed: 1959-02-18
Abstract: 858,450. Printing machines. MIEHLE-GOSS-DEXTER Inc. Feb. 18, 1959 [March 24, 1958], No. 5620/59. Class 100(2) In a travelling cylinder printing machine of the kind wherein the type bed and impression cylinder have relative vertical reciprocating movements, a driving member mounted on the cylinder and rotatable with respect thereto has means for operatively connecting the driving member to the cylinder during the printing movement, the means including a pawl carried by the cylinder and a ratchet wheel fixed to the driving member, the ratchet wheel having a notch in which the pawl is located for connecting the parts, means associated with the ratchet and pawl connection for preventing disconnection of the pawl from the ratchet wheel during part of the printing movement of the cylinder, and positive means operated at the completion of the printing movement for releasing the preventing means. As shown, the type bed 16 is reciprocated by a pair of pinions 12 driven by racks 18 reciprocated by cranks 21 on a drive shaft 22. The impression cylinder 23, journalled in arms 24 of a frame 25 is provided with racks 26 engaging the pinions 12. In operation, the type bed is moved upwardly as the cylinder is moved downwardly and vice versa, the cylinder being rotatably driven on its upward printing stroke. A rack 30 on the type bed 16 engages a gear 31 freely mounted on the cylinder 23. A pawl 32, Fig. 4, couples the cylinder 23 to the gear 31 when a head 33 on the pawl is engaged in a notch 34 of a ratchet wheel 35 secured to the cylinder 23. The pawl 32 is secured to a shaft 36 rocked by a spring 37, Fig. 7 (not shown) such that the head 33, Fig. 4, on the pawl engages the notch 34. Disengagement of the head 33 is prevented during the end part of the printing stroke by a lever 45 on the shaft 36 engaging the periphery of a collar 43 mounted for limited rotation about the axis of the cylinder journal. The collar 43 is rocked counter-clockwise to bring a slot 44 out of register with a projection 42 on the lever 45 by a cam 53 on a shaft 52, thereby preventing the projection 42 engaging the slot 44 and the pawl 32 disengaging the ratchet wheel 35. The shaft 52, Fig. 1, is rocked by a lever 55 connected to a rod 57 urged upwardly by a spring 61. An arm 65 on cam-operated rod 62 depresses the lever 55, at the top of the upward movement of the cylinder 23, to rock the cam 53 which rotates the sleeve 43 counterclockwise, thereby preventing engagement of the projection 42 in the slot 44; the pawl head 33 thus remains in engagement with the ratchet wheel 35 until the collar 43 is rotated clockwise to permit the re-entry of the projection 42 to permit disengagement of the pawl head 33 from the ratchet wheel 35. Specification 203,732 is referred to.
Patent GB-374064-A (GB)
Title: Improvements in and relating to photographic type setting apparatus
IPC: B41B27/28
Filed: 1931-02-23
Abstract: 374,064. Photographic type - composing. UHER, E., 49, Retek Utca, Budapest, and UHERTYPE AKT.-GES., Kubli House, Poststrasse, Glarus, Switzerland. Feb. 23, 1931, No. 5698. Convention date, Feb. 22, 1930. Drawings to Specification. [Class 98 (i).] In a process in which the characters to be set up are registered type by type and subsequently photographed type by type the mechanical operations required for producing a complete composition including justification are initiated by the actuation of keys or similar operating means in a continuous manner. In carrying the method into effect, the registering of the characters may be effected by feeding a succession of balls to a cylinder as described in Specification 334,499, [Class 98 (i), Photographic cameras &c.]. The justification may be effected by apparatus as described in Specifications 350,597 and 351,043 and the exposures of the character patterns by apparatus as described in Specification 331,305, [Class 98 (i), Photographic cameras &c.].
Patent GB-836841-A (GB)
Title: Improvements relating to vinyl polymers
IPC: C08F12/08
Filed: 1957-02-20
Abstract: In a process for the preparation of colourless and crystal-clear polymers of styrene and copolymers thereof, in aqueous emulsion with a hydrogen peroxide catalyst, and a quaternary ammonium salt as an emulsifying agent, the product is coagulated and extracted with an aliphatic alcohol containing not more than three carbon atoms.  The quaternary ammonium salt is soluble in the aliphatic alcohol at its boiling point, does not swell or dissolve the polymer, and has a boiling point at least 10 DEG  C. below the softening point of the polymer and has the general formula R1R2R3R4NX, where R1 is a fatty alkyl or substituted fatty alkyl group containing not less than 12 carbon atoms, and R2, R3, R4 are alkyl, aryl or aralkyl hydrocarbon groups, identical or different and X is a halogen atom, e.g. chlorine.  In examples styrene, dimethyl styrene and mixtures of styrene and a -methyl styrene, vinyl toluene and a -methyl styrene, commercial mixtures of o- and p-methyl styrenes and a -methyl styrene, are polymerized using stearyl and lauryl dimethyl benzyl ammonium chloride as emulsifying agents and the products are extracted with methyl alcohol and isopropanol.  The polymers have improved electrical properties and tensile, flexural and impact strengths.