baber/WOPTO huggingface dataset:
Patent GB-671352-A (GB)
Title: Improvements in or relating to electrical discharge devices
IPC: H01J61/26
Filed: 1949-03-18
Abstract: The incandescent cathode of an electric discharge device may comprise zirconium alloyed with 0.1 per cent barium.
Patent GB-1499116-A (GB)
Title: Lugs
IPC: E06B1/60
Filed: 1975-02-22
Abstract: 1499116 Window frames BKL ALLOYS Ltd 13 Feb 1976 [22 Feb 1975] 7530/75 Heading E1J A window frame having a channel portion is secured by a lug 29 of T-shaped crosssection, the central portion of the cross-member 31 of the lug engaging the base 11 of the channel, the end portions being spaced from the base and having wedging surfaces 34 remote from the base, a further part 38 of the lug extending from the stem remote from the cross-member. The cross-bar is of parallelogram plan, and is turned after insertion into the channel, in order to engage the surfaces 34 with lips 14, 15 on the side walls of the channel.
Patent GB-164836-A (GB)
Title: A new or improved anti-corrosive paint or composition
IPC: C09D195/00
Filed: 1920-03-13
Abstract: 164,836. Ivinson, C. H., and Roberts, C. S. March 13, 1920. Paints.-A poisonous substance such as mercuric chloride or cyanide is dissolved in an alcohol or methylated ether or a mixture of these, and the solution is added to a paint having an asphaltic base such as that described in Specification 151,666. This addition renders the paint specially suitable for preventing fouling, incrust'ation, and dry rot.
Patent GB-314424-A (GB)
Title: Two-post three-shaft draw-works for well drilling plant
IPC: E21B3/06
Filed: 1929-03-08
Abstract: 314,424. Goeser, E. W. June 27, 1928, [Convention date]. Borehole apparatus. - A two-post draw-works for well-boring plant comprises spaced posts 20 with braces 22, the latter supporting a countershaft 27 driven by a prime mover 13 through chains 30 at either of two speeds ; from the shaft 27, the rotary table 37 is driven through a sprocket 35 and chain 36 controlled by a clutch 38, and the line shaft 65, carrying cat-heads 70, at either of two speeds through chains 68, 69 controlled by a common clutch 54. The line shaft drives the hoisting drum 78 at either of two speeds through chains 82, 84, and clutches 85, 98. The clutch 38 controlling the drive of the rotary table is actuated by a lever 47 acting against a spring 41 through bell-crank lever 45, link 44, bell-crank lever 43, and link 42. The clutch 54 controlling the drive of the line shaft is actuated through a lever 61 and link 58. The clutches 85, 98, controlling the drive of the hoisting drum 78 are actuated through foot-levers 93, 104, acting through concentric shafts and against springs 88, 102.
Patent GB-777689-A (GB)
Title: Cyclopentanopolyhydrophenanthrene compounds and their preparation
IPC: C07J5/00
Filed: 1953-09-17
Abstract: The invention comprises compounds having the formula: <FORM:0777689/IV(b)/1> in which the 3-position is occupied either by a bivalent group convertible to keto by acid hydrolysis, e.g. a cyclic ketal, or by a pair of univalent groups together convertible to a single keto group by acid hydrolysis, e.g. a non-cyclic ketal, and compounds having the formula: <FORM:0777689/IV(b)/2> in which the 3-position is occupied by a univalent group which is convertible to keto by acid hydrolysis, e.g. an enol ether, the corresponding 7-keto compounds and the preparation thereof by reacting a 1 - carboalkoxymethyl-2 - acetonyl - 2,4b - dimethyl - 4 - keto - 7 - substituted - 1,2,3,4,4a,4b,5,6,7,8,10,10a - dodecahydrophenanthrene under anhydrous conditions with a strongly basic substance, e.g. sodium, sodium hydride, sodamide, sodium methoxide and potassium t-butoxide.  The 3-blocked compound may be hydrolysed to the corresponding 3-keto compound with acid, e.g. p-toluene sulphonic acid.  An example describes the production of stereoisomers of D 5 - 3 - ethylendioxy-11,16,20 - triketo - pregnene and of D 4 - 3,11, 16,20 - tetraketo - pregnene.  Specifications 763,208, 777,688 and 777,690 also are referred to.
Patent GB-287452-A (GB)
Title: Improvements in tubes for cycle and like frames
IPC: B62K21/18
Filed: 1928-03-13
Abstract: 287,452. Valat, L. March 19, 1927, [Convention date]. Metal tubes.-A tube for cycle or motor cycle frames is provided with internal helical reinforcements of long pitch on the parts of the tube subjected to stress. The tubes may also be thickened at the required point. The Figure shows a steering-tube b joined to a fork bridge, the helical reinforcements being shown at d.
Patent GB-621745-A (GB)
Title: Improvement in a method of producing glass fibers or filaments
IPC: C03B37/02
Filed: 1946-03-12
Abstract: 621,745. Glass fibres. GLASS FIBERS, Inc. March 12, 1946, No. 7750. Convention date Dec. 11, 1945. Addition to 610,564. Drawings to Specification. [Class 56] In the method for making fibres as described in the parent Specification, the fibres are spun or twisted conveniently with the mechanical drawing thereof. This is effected by rotating the heating chamber with the extrusion apertures in its base on its own axis whereby the fibres issuing from the apertures are twisted into a strand. A number of such individually rotated heating chambers may be carried by a member which itself is rotated about an axis parallel to that of drawing whereby the strands formed by the twisting together of the fibres coming from the individual heating chambers are themselves twisted together to form yet thicker strands. The material from which the fibres are made may be preheated and melted in one compartment of the heating chamber whilst the actual extrusion takes place from another compartment of the chamber whereby a refining of the molten material in its passage from one compartment to the other takes place and chilling adjacent the extrusion apertures is provented. Specification 619,769 is referred to.
Patent GB-982213-A (GB)
Title: Land vehicle power unit
IPC: F02B63/04
Filed: 1962-06-07
Abstract: 982,213. Power units. R. AMBERGER. June 7, 1962, No. 7875/62. Heading F1Q. [Also in Division H2] A land vehicle comprises an internal combustion or rotary piston engine 1, Fig. 1, coupled to an electric motor-generator 2 which is connected to an electric accumulator 5, all accommodated in a common housing 4, and means for selectively deriving the power either direct from the engine or from the motor-generator driven by the accumulator or both. The accumulator plates may be curved or arranged obliquely to the housing axis and the housing may be of circular, oval or elliptical cross-section. When operated by the engine 1, generator G, Fig. 6, charges accumulator 5, and switch S is operated to pass current from the accumulator 5 to drive motor M.
Patent GB-642797-A (GB)
Title: Production of printer's inks and paints
IPC: C09D11/02
Filed: 1948-03-16
Abstract: <PICT:0642797/III/1> Printer's ink containing lamp-black dispersed in a liquid vehicle such as oil is made by directing a smoky flame upon an oiled travelling surface.  In Fig. 1 a rotating drum 12 is supplied with oil from a tank 123.  A series of oil burners 21 supplied from a tank 17 under valve control are adjusted to produce a smoky flame which is directed upon the upper surface of the drum.  In a modification, Fig. 3, the burners are fitted with an air jacket 25 around the oil <PICT:0642797/III/2> conduit, and the air supply is controlled by a valve 28.  The burners are mounted in a housing 35 which is vertically adjustable, and is mounted in a base 38 by means of which the burners can be withdrawn through a central aperture in the side of the drum 12.  The gaseous products of combustion are withdrawn through a hood 31, and pass to a dust separator.
Patent GB-622430-A (GB)
Title: Improvements in egg holders
IPC: A47J29/06
Filed: 1947-03-22
Abstract: 622,430. Egg holders. SAWTELL, O. C. March 22, 1947, No. 7931. [Class 28(i)] A holder for cooking and serving eggs is formed as a truncated cone 10 with an upwardly projecting handle 13 and is made of heat and water resisting material. The cone may have an opening or slit down one side and its bottom may be sloped to cant the holder towards the handle direction; the handle may be of channel section and may have a suspending hole 14, and it may be integral with or attached to the cone.
Patent GB-526292-A (GB)
Title: Improvements relating to devices for extruding plastic material
IPC: A21C11/00
Filed: 1939-03-11
Abstract: 526,292. Extruding plastic materials. POTATO CORPORATION OF IDAHO. March 11, 1939, No. 7973. Convention date, April 11, 1938. [Class 87 (ii)] A machine for extruding plastic materials, such as potatoes and other starchy substances, comprising a pressure roller 15 within an apertured rotatably mounted extrusion cylinder 10 is driven by gearing so that the surface speeds of the roller and cylinder are substantially equal at the zone at which extrusion takes place, the extrusion apertures 29 have wide mouth portions 30 converging to narrow throats, and longitudinally extending internal ribs 31 with smooth rounded surfaces are provided between the apertures. The cylinder is rotatably supported on rollers 14 and carries internal teeth 20 meshing with a spur-wheel 19 on the driven shaft 17 of the smooth pressure roller 15. The cylinder and roller thus rotate with the same peripheral speed. The bottom 21 of a hopper 22 is provided with a triangular slot 23 through which the potato &c. drops into the cylinder. The material is continuously fed along the bottom 21 by vanes 27 on a belt 26 so that the material is uniformly distributed. The roller is within the lower half of the cylinder.
Patent GB-1171495-A (GB)
Title: Improved Working Medium Flow Control System for a Turbo-Machine
IPC: F01D17/14
Filed: 1967-02-20
Abstract: 1,171,495. Turbines. GORLITZER MASCHINENBAU VEB. Feb. 20, 1967, No. 8019/67. Heading F1T. [Also in Division F2] In a steam or gas turbine or like machine the working fluid flow through nozzle channels 3 is controlled by a slide 1 movable radially by a spindle 2, the radius of curvature R, of the free edge of the slide 1 being greater than the outer radius of the channels 3 such that the channels are opened or closed in relative succession when the slide is moved. The channels 3 are divided by cross-bars 4.
Patent GB-714532-A (GB)
Title: Improvements in mats
Inventor: BROOK JOHN TREVOR MUNDEN
IPC: A47L23/22
Filed: 1952-03-31
Abstract: 714,532. Mats. NUWAY MANUFACTURING CO., Ltd. March 25, 1953 [March 31, 1952], No. 8084/52. Class 142(4) A mat comprises links 10 formed of composite layers of canvas and rubber and has an area 13 on each side of a main area 12. Each area 13 is half the depth of the main area and has, disposed along its rear edge, a scraper plate 16 of metal or synthetic plastic for cleaning the sole and instep of a shoe. Each area 13 is also provided with two rows of links 20, the adjacent ends 21 of which are increased in height to form a raised strip for cleaning the welt. The bottom of each plate 16 is provided with a pair of flanges to prevent it rocking when in use.
Patent GB-589757-A (GB)
Title: Reflector support
IPC: F21V17/02
Filed: 1945-03-30
Abstract: 589,757. Reflectors. SCHWARZMAYR, L. March 30, 1945, No. 8128. Convention date, July 14, 1944. [Class 75 (ii)] An annular ring 4 supports a reflector 5, and has spring fingers 7 which engage the major circle 6 of a globe 2 under stress but have inward movement prevented by a rigid flange 8, so that the ring may be loosely supported by the spring fingers resting on a circle 9 above the major circle 6. Specification 589,797 is referred to.
Patent GB-448574-A (GB)
Title: Improvements relating to retorts for low temperature distillation of carbonaceous material
IPC: C10B1/10
Filed: 1935-03-15
Abstract: 448,574. Rotary retorts. KATH, A., 61, Augsburgerstrasse, Berlin. March 15, 1935, No. 8169. [Class 55 (i)] In the low temperature distillation of carbonaceous material, the charge is fed through a rotating group of tubes e extending between end plates c<1>, d<1>, the assembly being enclosed in a brick setting a, and divided into zones, the heating of which is separately controlled, internal heating being also provided by the passage in counter-flow of hot gases through the tubes. The charge is fed by conduits h to the tubes e, and the residue is discharged by scoops i<11> which feed into a discharge shoot i. Hot gases for internal heating pass from inlet g through the tubes to the outlet g<1>. For external heating, hot gases admitted by one or more pipes p pass through dampers p<11> to zones bounded by baffles k and annular projections a<x> on the shell a, the waste gases passing to outlets q. The retort is sealed by a slidable gland ring x<1>, Fig. 3, held by a spring x<11> against the surface of each end plate d<1>, c<1>. Specification 342,983 is referred to.
Patent GB-872812-A (GB)
Title: An electric circuit for detecting a mark on a document
IPC: B07C3/14
Filed: 1958-03-14
Abstract: 872,812. Photo-electric detector of marks on documents. STANDARD TELEPHONES & CABLES Ltd. (Standard Elektrik A.G.). March 14, 1958, No. 8293/58. Class 40(3) In an arrangement for detecting a mark on a document, e.g. a postage stamp on an envelope, in which the envelope is conveyed past two photo-electric detectors, positioned in close proximity, one of which detects the presence of an envelope and the other scans the envelope to detect the presence of a stamp thereon and in which gate means are operated by the output signals of the detectors, means are provided for preventing the operation of the gate means by signals produced by printing &c. on the envelope simulating the presence of a stamp. Detector 1 comprises a photo-cell illuminated by a light source which produces a signal, when a letter intervenes between source and cell, which prepares a flip flap circuit 4 for triggering from its 0 to its 1 position. Detector 2 comprises a light source which directs light on a passing envelope and the reflected light passes via a narrow scanning aperture to a photo-cell. The signals produced by the cell pass via an amplifier 3 to two paths, the first of these is via an amplitude filter 7 which passes signals corresponding to a reflectivity of over 75% (100% signal being produced by reflection from a white envelope). The filter output triggers the flip flap 4 which then supplies one input to the gate circuit 9. The second path is via amplifier 8 and 100 c/s. L.P. filter 6 which applies an integrated value of the signal to an amplitude filter 10 which is set to pass stamp signals with a reflectivity of 40-60 %. The filter output is applied to a second input to the gate circuit which generates a signal, when both inputs are present, to control a letter routing mechanism. False operation by advertising printing &c. comprising alternate light and dark areas having a mean reflectivity of 40-60% is prevented by applying the output of the amplitude filter 7 via a condenser, rectifier 11 and amplifier 12 to a second 100 c/s. L.P. filter 13 which supplies an integrated value of the signal to an amplitude filter 14, if the signal exceeds the threshold value of the filter a signal is applied to a third input to the gate which closes the gate and prevents a false operation of the ranting mechanism. When detecting stamps on dark envelopes the over 75% signal is produced by reflection from the edge of the stamp.
Patent GB-195265-A (GB)
Title: Improvements in or relating to urinals
IPC: E03D13/00
Filed: 1922-03-22
Abstract: 195,265. MacCallum, A. H. S. March 22,1922. Urinals.-A channel 2 is formed in the front edge of vertical members 1 to receive the urine. A basin 3 connected to a drain may be formed at the bottom of the channel or at some distance above the ground.
Patent GB-1316558-A (GB)
Title: Visual indicator devices
IPC: G12B11/00
Filed: 1972-02-24
Abstract: 1316558 Liquid level indication, indicating GENERAL MOTORS CORP 24 Feb 1972 [25 Feb 1971] 8574/72 Headings G1H and G1J In a liquid level indicator a tap 28, movable over a potentiometer 26 by a float with rise and fall of liquid level, alters the intensity of light emitted by lamps 18, 16 to vary the intensity of a light, through a green filter 14 and a red filter 12, along a transparent bar 10 to indicate liquid level. Notches 30, having an included angle of 45‹, extend along the bar 10 and have an inclination which varies from 90‹, Fig. 2, on one notch face relative to the rear face of the bar 10, at the ends of the bar 10 to 43 ‹ at the centre of the bar 10.
Patent GB-137702-A (GB)
Title: Improvements in resawing machines
IPC: B27B25/00
Filed: 1919-04-05
Abstract: 137,702. Alabaster, S. H., and Sandwell, W. D. April 5, 1919. Reciprocating-saw machines.-In a sawing-machine with a reciprocating saw, the feed-mecha. nism is actuated by a tappet on the saw-frame striking against a lever connected to the feedmechanism. The saw-frame T is pivoted to the reciprocating frame A and pressed against the work by springs E mounted on rods R pivoted to the frame T and carrying nuts V abutting on studs U attached to the frame of the machine. A tappet F on the frame T strikes against a lever G which operates the feed-mechanism through the gearing shown, the tappet F being so arranged that it does not engage with the lever. G until the saw has again reached its normal position after being pressed back by the work. Means are provided whereby the saw can be turned in the frame for cross-cutting and locked in position accordingly.
Patent GB-716868-A (GB)
Title: Improvements relating to electrostatic precipitators
IPC: B03C3/60
Filed: 1951-04-13
Abstract: 716,868. Electrostatic filters. HEINRICH, D. O. Jan. 21, 1952 [April 13, 1951], No. 8621/51. Class 39(1) An electrostatic precipitator comprises collecting electrodes having convex surfaces fully exposed to the gas stream and other parts which are shielded from the gas stream. and the exposed convex parts consist of or are coated with insulating or semi-conducting material so that there is built-up on these parts a potential such as to repel particles from them. The electrodes may comprise a series of finned members 1, Fig. 1 or shoot members 7. Fig. 3, having large openings 10 for the entry of dust and central members provided with bulges 11 for concentrating the electric field lines. Insulating or semi-conducting coatings are shown at 3 and 12. In another arrangement, Fig. 2 a wire screen 5 having coatings 6 on the outer surfaces of the wires, are provided in front of the actual collecting electrode 4. The coatings may comprise silicone enamel paint, or the electrodes may consist of aluminium, magnesium or one of their alloys and the coatings are produced by electrolytic or chemical oxidation or nitration. A conducting layer of material may be provided on top of the insulating or semi-conducting material.
Patent GB-1156213-A (GB)
Title: Improvements in Resilient Coupling Devices
IPC: F16D3/78
Filed: 1967-02-23
Abstract: 1,156,213. Universal joints. PAULSTRA. 23 Feb., 1967 [2 March, 1966], No. 8650/67. Heading F2U. A flexible coupling, especially for use in a vehicle steering column, comprises flanges 7, 8 at the ends of the driving and driven shafts 1, 2 and secured by nuts and bolts 5, 6 to a pair of perpendicular pressed metal cross arms 3, 4, the centre portions of which are offset for the reception of a resilient block 9, while their ends are formed with radial walls 3 2 , 4 2  between which sector shaped resilient blocks 10 are bonded. The portions 9, 10 may be integral. The securing nuts 6 are embedded in further resilient sector blocks 11 inserted between the walls 3 2 , 4 2  of each arm. The narrow spaces between the flanges 7, 8 and the centre portions of the arms 3, 4 are preferably closed by resilient washers.
Patent GB-712044-A (GB)
Title: Improvements relating to windscreen wipers
Inventor: BODDY JOHN
IPC: B60S1/36
Filed: 1951-04-13
Abstract: 712,044. Windscreen wipers. TRICOFOLBERTH, Ltd. April 15, 1952 [April 13, 1951], No. 8703/51. Class 138 (1) A wiper arm has a mounting socket 2 detachably secured to a shaft 3, a two-part arm 4, 6 pivoted at 5 to the socket and urged towards the windscreen by spring means, the part 6 being movable longitudinally with respect to the part 4 and normally held in position by a wedge member 9 connected to the spring means, wherein the spring means comprise an over-centre spring device including a coiled spring 13 connected at one end to the wedge member and at its other end to a curved member 12 pivoted on a pin 11 inwardly of the pivot 5. With this arrangement the arm can be moved to a position in which the spring passes through its dead-centre position and thereafter urges the arm away from the windscreen. The wedge 9 co-acts with a pin 8 secured between the side walls of the channelled arm part 4. The inner end of the strip arm part 6 may be upwardly bent to bear against the bottom of the section 4 so that as the length of the arm is increased the arm pressure against the windscreen is also increased in a similar manner to that described in Specification 641,526. When the arm is detached from the shaft 3 the spring 13 is only slightly stressed and the strip 6 may then be adjusted in the section 4.
Patent GB-651528-A (GB)
Title: Chlorinated indan derivatives and process for making same
IPC: C07C25/22
Filed: 1948-03-25
Abstract: Chloro-indan derivatives of formula <FORM:0651528/IV (a)/1> where m + n < 10, are used to plasticize cellulose esters, e.g. cellulose acetate, cellulose ethers, e.g. ethyl cellulose, and polymerized unsaturated hydrocarbons and substitution derivatives thereof, e.g. polystyrene and polyvinyl chloride.ALSO:Nuclear chloro derivatives of 1 : 3 : 3-tri-methyl-1-phenylindan of formula <FORM:0651528/IV (b)/1> where m and n may be 0 or an integer and m+n is an integer < 10, are prepared by treatment of 1 : 3 : 3-trimethyl-1-phenylindan with chlorine in an inert solvent under conditions favouring chlorination of aromatic nuclei.  Preferred conditions include the use of a temperature below 30 DEG  C., e.g. 15-25 DEG  C., a solvent such as carbon tetrachloride, tetrachloroethane, or chloroform, and a catalyst for nuclear chlorination, e.g. ferric or antimony trichlorides or iodine.  The resultant products may be separated by distillation in vacuo.  The 1 : 3 : 3-trimethyl-1-phenylindan may be prepared by treating a -methylvinylbenzene with an activated earth catalyst at > 200 DEG  C.  In the examples, 1 : 3 : 3-trimethyl-1-phenylindan is chlorinated in the dark in carbon tetrachloride in presence of antimony trichloride at 15-25 DEG  C. with one to nine mols. of chlorine to give the respective monoto nona-chloro derivatives.