baber/WOPTO huggingface dataset:
Patent GB-372414-A (GB)
Title: Improvements in or relating to electrical modulation arrangements suitable for use in radio and other high frequency signalling systems
IPC: H03C1/20
Filed: 1931-02-12
Abstract: 372,414. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and DITCHAM, W. T., Tudor House, Broomfield Road, Chelmsford, Essex. Feb. 12, 1931, No. 4460. [Class 40 (v).] The modulating valve V2 is connected in series on the low-tension side of the highfrequency amplifier V1, and the oscillatory output circuit L1, C3 is connected to the electrodes of the valve V1 through condensers C1, C2 of low reactance to radio frequencies but of high reactance to modulating frequencies, thereby permitting connection to earth of the output coil L1. As shown, the amplifier valve V1 is fed from an oscillatory source at L3 coupled to a tuned grid circuit. Condensers C4, C5 are preferably inserted between the tuned circuit and the valve, and a leak path is afforded by a choke L5 and resistance R1. Inter-electrode capacity is neutralized by a condenser C8. The cathode may be directly or indirectly heated through a transformer TR, and with direct heating the return circuits are connected to a mid-point on a shunt resistance R2. The cathode of the valve V1 is connected to the plate of the modulating valve V2, and the high-tension source has its positive end +HT connected through a choke L4 to the amplifier plate, and its negative end -HT connected to the modulator cathode and to earth. Signal voltage is applied to the grid of valve V2 through a condenser C9. The arrangement permits both the signal source and the oscillatory coil L1 to be kept substantially at zero D.C. voltage. The transformer TR should have low interwinding capacity, or its capacity may have a valve equivalent to the capacity C2 which may then be omitted. According to the Provisional Specification, the valve V1 may be an oscillator.
Patent GB-1535311-A (GB)
Title: Mounting means
IPC: B60T8/171
Filed: 1976-02-25
Abstract: 1535311 Bolting DUNLOP Ltd 25 Feb 1976 [1 Feb 1975] 4470/75 Heading F2H To secure two members 22, 24 together in precise spaced apart relationship, the spacing being determined by the shank length of at least one bolt 30, a flexible resilient element 27 is secured at at least one point to the member 24 and at least one nut 26 is secured to the element 27 at a position offset from the point or points of securement of the element 27 to the member 24, the nut bore being aligned with an aperture 29 in the element 27, and a bolt 30 having a shank longer than the axial length of the nut 26 is passed through an aperture in the member 22 and screwed into the nut 26 to engage the member 22 between the bolt head 31 and the free end of the nut 26, the tip of the bolt 30 bearing against the member 24 to deflect the element 27 away from the surface of the member 24 other than at its points of securement thereto. As shown, the member 22 is a ring with an annular series of slots 23, the ring and a transducer 19 forming part of an anti-skid braking system for a motor vehicle, as described in Specification 1,222,510. The ring 22 is mounted on the end wall 24 of a brake drum 11. Each resilient element 27 is secured to the hub wall 24 by the heads 16 of two bolts 15 used to secure the drum 11 to a wheel hub 14, the bolt ends 17 projecting to receive a wheel. A nut 26 is welded to the middle of each element 27 so that the ring 22 may be supported at a number of points evenly spaced round a common pitch circle. In a modification, Figs. 4, 5, not shown, the set of elements 27 is replaced by a single mild steel ring (32).
Patent GB-718729-A (GB)
Title: Improvements in or relating to pumping devices
IPC: F04B19/12
Filed: 1952-02-20
Abstract: 718,729. Screw pumps. LANG-LONDON-Ltd., ECCLES, A. J., and CLARKE, J. W. Feb. 17, 1953 [Feb. 20, 1952], No. 4493/52. Class 110(1) In a pump comprising a tubular casing in which rotates a shaft carrying a helical impeller, the shaft and impeller can be readily withdrawn from one end of the casing, and the driving motor is provided with one or more brackets from which the casing, hangs substantially vertically. An impeller 12 rotates within a tubular casing 10 having two outlets 18 and an inlet 16. The inlet area can be varied by means of a sliding cover 17. Inlet 16 may be replaced or supplemented by one or more inlets in the bottom plate 33, which may be detachable for cleaning. In operation, the assembly is suspended by a ring bolt 21 on the driving motor 19. Brackets 22, 23 on the motor have undercut or inclined recesses which receive arms 25, 26, which may be formed integrally with a cover plate 27. The cover plate 27 carries a plate 14 which supports a bearing and gland 15. A further bearing 13 is carried by the bottom plate 33, and the lower end of the impeller shaft 11 is tapered to facilitate entry.into it. The casing 10 is removably attached to the cover plate 27 by means of T-bolts 31 which engage notches in two pairs of lugs 28, 29 and are secured by wing nuts 32. The motor 19 can be detached from the impeller and casing by releasing the shaft coupling 24, which is of the readily releasable form described in Specification 366,824, [Group XXIV], and then lifting the arms 25, 26 from the brackets 22, 23'.
Patent GB-743104-A (GB)
Title: Improvements in a core structure for a railway coupler
Inventor: KULIEKE FREDERICK CHARLES
IPC: B22C9/10
Filed: 1953-11-25
Abstract: 743,104. Cores. AMERICAN STEEL FOUNDRIES. Nov. 25, 1953, No. 4525/54. Divided out of 743,098. Class 83 (1). A core assembly for a railway couplerknuckle having a tail section 8 and a nose section 6 interconnected by a throat, and having a pin-hole extending from top to bottom through the knuckle, comprises a pin-hole core 22 and a tail core 12 separable from and supported by the pin hole, core. The subject-matter of the'Specification is the same as that of Specification 743,098 which is referred to.
Patent GB-305942-A (GB)
Title: A new or improved alloy
IPC: C22C38/30
Filed: 1929-02-11
Abstract: 305,942. M³ller, W., and Lippe (Olga) Prinzessin zur, (Representative of L÷wenstein, Karl Prinz zu). I'eb. 11, 1928, [Convention date]. Alloys. - A hard alloy suitable for tools &c. contains 10-55 per cent of iron together with tungsten, chromium, and cobalt in about the proportions 8 : 2 : 1, and preferably 1-4 per cent of carbon. Up to about one fourth of the tungsten may be replaced by molybdenum and up to one half of the cobalt by nickel. Up to a total of 4 per cent of other elements, such as silicon, boron, zirconium. titanium, nitrogen, vanadium, beryllium, cerium, and manganese, may be added. According to the Specification as open to inspection under Sect. 91 (3) (a), the cobalt may be wholly replaced by nickel. This subjectmatter does not appear in the. Specification as accepted.
Patent GB-892553-A (GB)
Title: Collet chuck
Inventor: BENJAMIN MILTON LLOYD
IPC: B23B31/20
Filed: 1960-02-09
Abstract: 892,553. Roller-bearings. ERICKSON TOOL CO. Feb. 9, 1960, No. 4575/60. Class 12 (1). [Also in Group XXII] A roller thrust-bearing 17 has rollers 18 arranged to protrude from radial openings in a pair of retaining-plates 20.
Patent GB-925091-A (GB)
Title: Separator for accumulators and method of its production
IPC: H01M50/489
Filed: 1960-02-09
Abstract: A microporous separator for accumulators is made by sintering at least two layers of the same synthetic resin, the pore diameters of adjacent layers being different in the ratio of at least 1:2.  The size of the resin particles may, for example, be from 1 to 20 microns in one layer and 8 to 100 microns in an adjacent layer, with pore diameters of 1 to 10 and 8 to 50 microns respectively.  Where three layers are used, the finer particles are on the outside.  Specified resins are polystyrene, polyvinyl chloride and polyethylene, and fillers may be added.  In the examples, polystyrene particles in layers of 1 to 1,5 mm. thickness are provided on a moving support from hoppers and are sintered at 200 DEG -250 DEG C.ALSO:A microporous separator for accumulators is made by sintering at least two layers of the same synthetic resin, the pore diameters of adjacent layers being different in the ratio of at least 1 : 2.  The size of the resin particles may, for example, be from 4 to 20 microns in one layer and from 20 to 100 microns in an adjacent layer, with pore diameters of 1 to 10 microns and 8 to 50 microns respectively. Where three layers are used, the finer particles are on the outside. Specified resins are polystyrene, polyvinyl chloride and polyethylene, and fillers may be added.  In the examples, polystyrene particles in layers of 1 to 1,5 mm. thickness are provided on a moving support from hoppers and are sintered at 200-250 DEG C.
Patent GB-123851-A (GB)
Title: Improvements in or relating to Artificial Limbs.
Inventor: ADAMS ALFRED CHARLES
IPC: A61F2/58
Filed: 1918-03-15
Abstract: 123,851. Adams, A. C. March 15, 1918 Limbs, artificial.-A joint for limbs which permits relative rotation of the adjacent parts and enables the two parts to be readily assembled and disconnected without interfering with the turning and locking gear, comprises a central spindle 3 on the one member fitting into a bearing on the other part. Surrounding the bearing is a loose pulley 8 which can be rotated against the action of a spring 12 by a cord 13 operated by the bending of the elbow, or by the movement of some other part of the body. A crank-pin 6 on the pulley passes through an arcuate clearance slot in the base 4 of the one member and engages a hole in the spindle carrying member to transmit motion thereto. A spring pin 26 is normally held by a cam 25 out of engagement with holes 24 in the pulley, 'but can be released by rotation to lock the joint in any position. To make the two parts readily detachable, the spindle 3 is formed with a coned upper end and a circumferential recess. When the joint is assembled, the coned end displaces a sliding spring locking-plate 31 which afterwards engages the recess. In a modified construction, shown in Fig. 7, the pulley is omitted, and the cord 31 engages directly with a ball-jointed rod 34 corresponding to the crank-pin 6. A spring 36 restores the rod after displacement.
Patent GB-113176-A (GB)
Title: Improvements in or relating to Electrical Switches.
Inventor: ROBERTS JOHN
IPC: H01H13/12
Filed: 1917-03-31
Abstract: 113,176. Roberts, J. March 31, 1917. Press button switches; contacts. - A n electric switch for short-circuiting the ignition magnetos of aeroplane engines has rigid o r unyielding stationary magnets and earth contacts and a short-circuiting contact which is capable of slight play so that it may adapt itself to any irregularity between, or in the setting of, the fixed contacts. The movable contact may be of spherical, hemi-spherical, conical, wedge, or like shape, and be rigidly mounted upon a push-button which is capable of sliding easily within the casing; or, as shown in Fig. 4, the movable contact may be in the form of a disk e, slidably mounted under spring control upon the stem of a pin h secured to the button f. The lower face of the disk may be of convex or like form and the fixed contacts a<1>, b<1> correspondingly shaped.
Patent GB-1038461-A (GB)
Title: Process for making composite porous elements
IPC: B01D39/20
Filed: 1963-02-05
Abstract: Sintered porous metal elements such as filters are made by extruding, drawing or rolling at ambient temperature a composite formed of a number of superposed layers of pastes of metal powders and binders and sintering the deformed compact. The particle size of the metal of each layer is different but the layers may be of the same metal. The binders may be paraffins, petroleum jelly, fats and synthetic plastics.  According to one example two superposed layers of bronze powder and a binder of petroleum jelly and paraffin the bronze of one layer having a size of 10-30 microns and a size of 50-100 microns in the other layer is extruded and sintered in Al2O3 in H2 at 725 DEG C. In another example a composite nickel pipe is made from a nickel powder of 1-5 microns and another nickel powder of 5-16 microns using a petroleum jelly paraffin lubricant.  The coarse powder paste is cast into around a central cone of an extension mould, the core is removed and the paste of fine powder is cast into the core cavity. Extrusion and sintering at 850 DEG C. is then carried out.
Patent GB-713979-A (GB)
Title: Improvements in or relating to cement
IPC: C04B7/28
Filed: 1952-02-22
Abstract: A cement comprises a ternary mixture consisting of Portland cement, granulated blast furnace slag and a pozzolana.  One or more of the following additions may also be present; calcium sulphate or calcium chloride as hardening accelerators, and pore formers, e.g. resins. The Portland cement may be artificial (which is defined) or natural. Light ash-from furnaces burning powdered coal - is the preferred pozzolana.
Patent GB-229695-A (GB)
Title: Improvements relating to the treads of pneumatic and other tyres for the wheels of vehicles
IPC: B60C11/01
Filed: 1925-02-20
Abstract: 229,695. Develay, M. N. A. Feb. 23, 1924, [Convention date]. Tread bands, projections, and surfaces. - The tread of a pneumatic or other elastic tyre is formed with a flat central portion and side projections, with surrounding grooves at their bases. In the form shown in Fig. 1, the tread comprises two series of hemi-spherical projections 1, 6, separated by a flat rib 3, and outer ribs 4 to reinforce the side portions of the cover. Fig. 3 shows a modification in which the tread comprises inner elongated projections 8 alternating with outer semi-cylindrical projections 6. The tread projections may be of other forms.
Patent GB-307603-A (GB)
Title: Method of and means for cutting or removing the turf, soil, or the like, from the verge of a road
IPC: E01H1/00
Filed: 1928-02-15
Abstract: 307,603. Price, C., Price, F. C., and Price, C. A. Feb. 15, 1928. Scarifiers; trimming-up sides of roads.-A device for cutting and removing turf or soil from the verge of a road is in the form of an attachment a (see plan Fig. 2) to the tool box A<2> of a road scarifier adjustably mounted at the rear of a road roller. The attachment comprises one or more upright knives c, d and an inclined turf-removing blade b with horizontal cutting edge. In the form shown, the knife c is adjustably mounted on the outside face a<4> of the attachment, as shown in Fig. 5, and the knives d are held by cotters in slots d<1>. In place of the knife c, a plate e, Fig. 7, carrying horizontal tines e' for scarifying a bank may be provided. The blade b may be carried by a bracket hinged to the attachment and supported by an adjustable stay, or the attachment may be mounted for lateral adjustment on the axle which normally supports the tool box of the scarifier.
Patent GB-361741-A (GB)
Title: Improvements in or relating to electric condensers
Filed: 1931-02-14
Abstract: 361,741. Static contact rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Feb. 14, 1931, No. 4779. Convention date, March 21, 1930. [Class 37.] A condenser, fixed or variable, has at least one of its electrodes made of one of the metals of the first sub-group of the fourth principal group of the periodic system of elements while the dielectricconsists partly or wholly of a stable chemical compound formed by converting, electrolytically or chemically, the surface of the metal. Examples include zirconium with zirconium oxide or phosphate. It is stated that for voltages above those usable in a condenser as such, the assembly will act as a rectifier, in which case, if the same metal is used for both electrodes, one only is coated with a chemical compound formed as described.
Patent GB-253963-A (GB)
Title: Improvements in or relating to road making
IPC: C04B28/02
Filed: 1925-02-21
Abstract: 253,963. Hughes, C. M. C. Feb. 21, 1925. Concretes, lime and cement. - A waterproof concrete for road making and roof coverings consists of ordinary cementitious concrete mixed directly with cold liquid bitumen. pitch, tar, or similar hydrocarbon free from added inorganic matter, the proportions being such that the concrete sets by hydration as usual. In one method, 1 part by volume of cement, 3 parts of sand or like material, and 2 parts of granite chippings 'are mixed dry and hydrated, and 13<1>/3 gallons of liquid bitumen per cubic yard of the mixture are added. In another method, sand or the like is mixed with <1>/16 part by weight of the hydrocarbon, and cement, lime, or other calcium compound capable of setting is added and the whole mixed and hydrated.
Patent GB-855794-A (GB)
Title: Improvements in containers for dispensing fluent materials under gaseous pressure
Inventor: SAMUEL ARTHUR JOHN
IPC: A62C13/00
Filed: 1957-02-13
Abstract: 855,794. Dispensing liquids by gaseous pressure. GULF RESEARCH & DEVELOPMENT CO. Feb. 13, 1957, No. 4855/57. Drawings to Specification. Class 102(2). The dip tube of a pressurised liquid dispenser has a gravity operated sleeve or like valve controlling a supplementary inlet into the tube near the top of the container through which the liquid is forced when the container is inverted. Reference has been directed by the Comptroller to Specification 780,331.
Patent GB-266712-A (GB)
Title: Fluid pressure generator
IPC: F04B35/00
Filed: 1927-02-21
Abstract: 266,712. Meyers, R. J., and Hiebert, F. G. Feb. 23, 1926, [Convention date]. Heating by eletricity.-A fluid pressure generator comprises a combined heating and expansion chamber divided into two parts A, B, by a partition having a non-return valve 8 and an injector 22 connected by pipes with these two parts and receiving induced air from reservoirs 31, 32 supplied by a compressor 33. The chamber A contains heating coils 10 which are supplied with current as the pressure in the chamber falls, through a rheostat 12 controlled by a piston 18 subject to the pressure in the chamber. Air is drawn off from the chamber B through a valve 46 and also passes into the chamber A through the valve 8.
Patent GB-1261655-A (GB)
Title: Basic amidocarboxylic acid
Inventor: ROEDEL HILMAR
IPC: D06P3/32
Filed: 1970-02-02
Abstract: 1,261,655. Novel basic amidocarboxylic acids. SANDOZ Ltd. 2 Feb., 1970 [3 Feb., 1969], No. 4907/70. Heading C2C. [Also in Division D1] Novel basic amidocarboxylic acids of the formula wherein R is a C 2 -C 8  alkylene radical optionally interrupted by O or S atoms, R 1  is a hydroxypropylene radical, R 2  is a C 1 -C 20  organic radical, R 3  is an aliphatic or aromatic mononuclear radical, n and n 1  are integers from 1 to 5, m is 0 or 1, x and y are 1 or 2, and when m is 0, n + n 1  is 3, 4 or 5, or salts thereof are prepared by reacting 1 or 2 moles of a polyamine of formula  with 1 mole of the anhydride of polycarboxylic acid of formula The reaction is preferably carried out at room temperature in the presence of an inert organic solvent. A polyamine of the above formula in which m is 1 can be suitably prepared by adding 2 moles of a polyamine of formula or on to 1 mole of a diepoxide of formula  optionally in the presence of an alkaline catalyst e.g. NaOH, and an inert organic solvent at a temperature of from 100‹ to 160‹ C. Suitable polyamines of formula are ethylene-diamine, hexamethylene - diamine, diethylene - triamine, tetraethylene-pentamine, bisaminoethylglycol and mixtures thereof; suitable diepoxides of formula are those in which R 2  is a C 1 -C 20  alkyl radical; suitable polycarboxylic acids of formula are pyromellitic, trimellitic, phthalic, succinic, maleic and diglycollic acids. The compounds may be used as assistants in the dyeing of leather.
Patent GB-942363-A (GB)
Title: Polypropylene rubber blends
IPC: C08L23/12
Filed: 1962-02-08
Abstract: A composition contains a major proportion of isotactic polypropylene in intimate admixture with at least one per cent by weight of each of at least two rubbery materials. Specified rubbery materials are butyl rubber, butadiene rubber (e.g. cis-1,4-polybutadiene), copolymers of butadiene with styrene or acrylonitrile, polyisoprene, polyisobutylene, natural rubber, silicone rubber, polysulphide rubber, and chlorinated and hydrochlorinated rubbers.  The compositions find application as boxes, tanks,luggage, automobile and refrigerator parts and as battery boxes.
Patent GB-1038284-A (GB)
Title: Improvements in or relating to methods of harvesting pods from pod-bearing vines and/or a machine thereof
IPC: A01D45/24
Filed: 1965-02-05
Abstract: 1,038,284. Harvesting peas. W. G. PAYNE. Feb. 5, 1965 [Feb. 14, 1964], No. 5192/65. Heading A1F. A method of stripping pea-pods from pea-vines comprises feeding the vines over a table having a series of apertures arranged longitudinally thereof, causing the haulm-portions of the vines to be drawn through the apertures where they are severed, the pods, being too large to pass through the apertures, being delivered at the end of the table. The apparatus comprises cutting means 7, for severing the vines 6 from the ground, and a pair of superimposed elevators 8 for feeding the cut vines up to an endless belt 9 with transverse tine-bars 10 which carry them over a rearwardly and downwardly inclined table 3 having rows of longitudinal slots 4. Each slot is enlarged at one end 5 to permit the passage therethrough of a hook 12 on a rotating stripping wheel 11, the hook carrying with it a portion of haulm which is then cut by a reciprocating knife 20 below the table, the mechanisms for driving the knives and the wheels 11 being geared together and provided with shearable members (Figs. 6 and 7, not shown) which prevent damage to the knives and wheels in the event of mutual contact. Progressively more haulm is removed and severed as the vines pass down the table, the pods 28 delivered at the end into a receptacle 30 being substantially haulm-free. In a modification (Fig. 8, 9, not shown) the discs are relatively thick but have narrow sectors adjacent to each hook, of which there are three per wheel; the slots are then of uniform width.
Patent GB-442975-A (GB)
Title: Improvements in tennis racquets
IPC: A63B49/08
Filed: 1935-02-19
Abstract: 442,975. Tennis rackets. FOWLER. F., Wingello House, Angel Place, Sydney, Australia. Feb. 19, 1935, No. 5365. Convention date, Oct. 26, 1934. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 23, 1935.] [Class 132 (ii)] In a slot 5 in the wooden handle of a tennis racket there is secured by adhesive a one-piece cane insertion strip 6 extending from the lower end of the handle to a point short of the middlepiece 3 of the frame, and having its major transverse dimension lying in the plane of the racket head. In a slot 7 at right angles to the slot 5 may be secured another cane insertion strip 8. Handle slips 4 may be secured on some or all of the faces of the handle. The Specification as open to inspection under Sect. 91 comprises also constructions wherein the cane insertion strip extends through the middle-piece, if only one such strip is used it may, if desired, lie at right angles to the plane of the racket. This subject-matter does not appear in the Specification as accepted.
Patent GB-815789-A (GB)
Title: A new or improved article of furniture fitted to serve as a smokers' companion and as a stand for a hearth companion set
IPC: A24F19/00
Filed: 1956-02-22
Abstract: 815,789. Hearth companion sets. HEATH Ltd., I., HEATH, I. A., and BRADLEY, W. G. Feb. 11, 1957 [Feb. 22, 1956], No. 5433/56. Class 126 [Also in Group VI] The smoker's ash receptacle of Specification 801,601 [Group VI] now has four arms 131 supporting fire irons 17.