baber/WOPTO huggingface dataset:
Patent GB-408369-A (GB)
Title: Process for producing plastic masses from carbamide and thiocarbamide
IPC: C08G12/12
Filed: 1932-11-12
Abstract: Resinous condensation products are obtained by the interaction of a mixture of urea and thiourea, the latter being present to the extent of 10--20 per cent by weight of the mixture, with aqueous formaldehyde, in the ratio of about 1.5 to 2.0 mols. of formaldehyde per mol. of the mixture, without the application of heat.  The product is a chalky precipitate which is moulded under heat and pressure, preferably after being dried and ground.  Acid or alkaline condensing agents may be present and fillers, colouring materials and plasticizers may be added.  Cellulose flakes, fabric fibres and asbestos wool are mentioned as fillers, and phenols, e.g. cresol or resorcinol, and glycerine or aniline as plasticizers.  Examples are given.  Specifications 266,028, [Class 2 (iii)], and 372,847 are referred to.
Patent GB-282727-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J21/10
Filed: 1927-11-29
Abstract: 282,727. Radiotechnique. Dec. 31, 1926, [Convention date]. Vacuum tubes.- A valve has a cathode heated by alternating current of voltage lower than 0.7 volts and of 0.8 to 1.8 amps, the cathode comprising several oxide-coated filaments mounted in parallel in a rigid frame. The cathode may operate at 0.5 volts and at 1.25 amps and may comprise six to ten nichrome filaments 8 mms. long and 0.6 mms. thick and coated with magnesium oxide. The cathode sections 1 are mounted transversely between supports 2, 3 spaced by glass beads 4, 5. The cathode is surrounded by a helical grid wound on a U-shaped support 7 and by an anode 8 consisting of a sheet in the form of a flattened cylinder secured to bent supports 10. A V-shaped resistance 21 is mounted between the bent-out upper ends of the supports 2, 3, and a bent support 18, connected through a contact in the cap with the return circuit of the grid. The current through the resistance is insufficient to cause it to emit electrons. The supports for the electrodes are mounted in a plane in a foot 11 and symmetrically about the support 18. A metal ring 19 carrying magnesium is mounted around the foot and secured to a support 12 for the anode. The ring is heated by high frequency current so as to vaporize the magnesium during evacuation of the bulb. The valves may carry five pins engaging corresponding sockets, two sockets of each holder in a radio set being connected through a transformer to the mains. Two grids and anodes may be provided. The Specification as open to inspection under Sect. 91 (3) (a comprises also a single section filament and the mounting of the resistance 21 in or on the base of the valve. This subjectmatter does not appear in the Specification as accepted.
Patent GB-909506-A (GB)
Title: Method of oxidatively hardening and degasifying briquettes
IPC: A63G9/16
Filed: 1960-09-19
Abstract: 909,506. Briquetting ores. METALLGESELLSCHAFT A.G. Sept. 19, 1960 [Sept. 26, 1959], No. 32165/60. Class 82 (1). [Also in Group XII] Briquettes from a press 1 are fed by a conveyer 2 to a belt conveyer 3 which is housed in a casing 5 and supplied through wind boxes 7 with gases at different temperatures and/or oxygen content so that the briquettes are partially oxidized at temperatures from 150- 300‹ C. for a period of 30-60 minutes in a bed 30-60 cms. deep. They then pass to a vertical retort 4 divided into three zones, viz. an upper zone 12 where partial oxidation is continued, a central zone 13 where, by means of inert gases entering at temperatures of 500- 700‹ C., the briquettes are carbonized, and a lower zone 14 where they are cooled by inert gases at temperatures of 20-200‹ C. Each zone may itself be divided into several sections through which gases of different temperatures flow. In the lower zone 14 apart from the inert gas flowing through the waste-heat boiler 48 there may be a lower section in which inert gas is circulated through a cooling tower down which cold water is sprinkled. In a modification the belt conveyer 3 is replaced by a bucket elevator, the buckets having gas permeable bottoms, or movable pallets in a tunnel furnace.
Patent GB-340078-A (GB)
Title: Improvements in the process of, and apparatus for, producing channelled blocks and bricks of plastic material
IPC: B28B3/20
Filed: 1929-10-23
Abstract: 340,078. Braun, J. Oct. 24, 1928, [Convention date]. Extrusion machines; punching and perforating machines.-A channelled block with one closed end is formed by moulding the block with holes extending therethrough, then introducing a plunger or plungers to strip material from the walls of the channels and compress it to form a closing wall. Usually plungers are introduced simultaneously at opposite ends of the block and the central wall thus formed is cut through eventually to form two blocks, each having a closed end. In the illustrated apparatus a bar of clay a, extruded through dies which form holes or passages therein, is cut by means of a wire on the swinging frame d and the severed block k, Fig. 2, is turned on a rotary platform apparatus through a right angle into a position in which the oppositely-acting plungers m remove and compress the material to form the central wall w, Fig. 4. At the next movement of the platform the block is moved past a wire fixed at S which divides it into two blocks as shown by the central line in Fig. 4. The plungers are worked by hand from the lever n. On the downward stroke of the frame d a spring latch thereon engages a member on the platform, so that the platform moves with the frame on the return stroke. The plungers may be worked mechanically instead of by hand.
Patent GB-386088-A (GB)
Title: Improvements in grabs
IPC: B66C3/08
Filed: 1931-11-20
Abstract: 386,088. Grab-buckets. BARNARD, D. J., 8, Strathfield Gardens, Barking, Essex. Nov. 20, 1931, No. 32228. Addition to 352,225. [Class 78 (iv).] The pivotally-mounted rods in the grab-head, described in the parent Specification, for maintaining the bucket sections open whilst lifting the grab from the tipping ring 14 and lowering to the ground are replaced by a tubular rod 27 secured in the grab-head and a rod 26 which slides therein and co-operates with the hooks 22 and with an apertured member 30 and sliding cover-plate 33 on the cross-beam. A plate 25 on the head of the rod 26 bears upon the tails 24 of the hooks 22 and its weight is reinforced by a spring (not shown). The cover-plate 33 has an aperture 34 to register with an aperture in the member 30 and to receive the rods 26, 27, and is moved laterally by a weighted lever 35, 38 which has arms 39 engaging in slots 40 in the housing 42 of the sheave 19 on the cross-beam. This housing has a limited vertical movement in the cross-beam. When the open grab is supported on the ring 14, as shown in Fig. 3, with the rope taut, the housing 42 is in its highest position, and the weighted end 38 of the lever 35 is in the lowest position so that the cover-plate 33 is drawn to the right as shown in chain-lines in Fig. 5, and the aperture for the rods 26, 27 is closed. On hauling in, the plate 33 abuts against the rods, the plate 25 is raised in the grab-head, and the hooks 22 fall free of the ring. On lowering to the ground, when the rope becomes slack, the housing 42 is in its lowest position and the cover-plate 33 is moved to the left, as shown in Fig. 5, permitting the lower ends of the rods 26, 27 to enter the aperture 34 so that the plate 25 falls in the grab-head and the hooks 22 are set in ring-engaging position. On hauling in, the bucket is closed, the rods 26, 27 entering a tubular socket 43 in the cross-beam and the hooks 22 pass over and engage the ring 14. On paying out, the grab is supported on the ring, the bucket opens, and when the rods 26, 27 are withdrawn from the aperture 34, the cover-plate 33 is moved by the weighted lever to the original position.
Patent GB-285350-A (GB)
Title: Improvements in devices for ships for separating oil from bilge or ballast water
IPC: B01D17/02
Filed: 1927-12-01
Abstract: 285,350. Deutsche Werft Akt.-Ges. Feb. 25, 1927, [Convention date]. Separating by gravity.-An apparatus for separating oil from the bilge or ballastwater of ships comprises a vessel b within which is a. conical casing f. The impure water is pumped through a pipe a and impinges on a plate d so curved as to spray the water towards the walls of the casing f. The water tends to follow the general direction of the casing walls and flow off over the upper rim of the casing, whereas the particles fail, owing to their greater buoyancy, follow a path more nearly approaching the vertical and are collected by an inverted-funnelshaped plate g and passed into a collecting chamber h. The water flows away at the outlet i, and the oil is withdrawn continuously or intermittently from the chamber h.
Patent GB-160576-A (GB)
Title: Improved frame for gulley grids
IPC: E03F5/04
Filed: 1919-12-29
Abstract: 160,576. Eyres, J. Dec. 29, 1919. Road surface boxes.-Relates to gullies in which the grid is seated in a frame resting on the top of the gulley and in which the trap is covered by a removable inclined deflecting-plate. According to the invention, the frame B carrying the grid C is provided with a removable inclined plate E to cover the trap a<1> and to direct the water and solids from the grid into the dirt box a. The plate mav be placed at either side b<1> or b<2>. Various methods of supporting the plate are described.
Patent GB-1456286-A (GB)
Title: Arrangement for measuring the departure of a bundle of parallel light
IPC: G01N21/41
Filed: 1974-07-23
Abstract: 1456286 Measuring light beam deflection refractive index CARL ZEISS JENA VEB 23 July 1974 [25 July 1973] 32493/74 Heading G1A A system for measuring deflection of a beam of parallel light has a slit 3 illuminated by source 1 and imaged in plane 6 by condensing and imaging objectives 4, 5; a further objective 10 imaging an object field 9, in the parallel beam between objectives 4 and 5, at the detector plane 8 and an optical element 7 in the image plane 6. The optical element is a glass plate with strips or edges of areas which cause a phase shift of 180 degrees and is placed in the diffraction pattern of the slit so as to maximize or minimize the light intensity at detector 8. Lateral movement of the parallel beam by an object at 9 will change the intensity at the detector and the movement can be measured either from the change or by moving a beam displacing element, either manually or automatically to compensate for the change. The system may be used to measure refractive index of a flowing liquid using a wedge shaped cell for each of a reference and the unknown liquid. Several alternative arrangements are described. A plane mirror may reflect parallel light to the collimator lens which serves also as an imaging lens and a half silvered mirror may separate the beam. Optical element and slit may be rigidly mounted together with reflection of parallel light by a mirror which is not perpendicular to the optical axis of the collimator. When measuring refractive index, the beam may be positionally restored by contrarotatable optical wedges.
Patent GB-478455-A (GB)
Title: Improvements relating to double-acting hydraulic and like pumps
IPC: F04B9/14
Filed: 1936-11-27
Abstract: 478,455. Bucket pumps. DOWTY, G. H. Nov. 27, 1936, No. 32545. [Class 102 (i)] In a pump, primarily intended for hydraulic control systems, the discharge from the lower side of the piston takes place past a valve 22 in the piston and a passage 15 and port 16 in the piston-rod to the upper side of the piston and thus to the discharge pipe 7. The diameter of the piston-rod is such that the discharge is the same for both strokes. The piston-rod passes through a stuffing-box, the lower bush 12 of which has a perforated extension 13 acting as a piston stop. The piston-rod is connected by a link 25 to a bell-crank handlever 2.
Patent GB-1020738-A (GB)
Title: Grille supporting structure
IPC: F24F13/08
Filed: 1964-08-11
Abstract: The grille described in Specification 930,254 is secured in a frame 16 by clips 18 having arms 22, 23, 24, 25 unequally disposed so that by clipping on the top or bottom end strips 12 and also on flanges 38, 39 of the frame the grille is supported with the strips angularly disposed in relation to the frame Figs. 1 and 2 (not shown).  The frame may be strengthened by having upstanding flanges 16b which also serve to mask the attachment of the clips 18 to the frame.  The ends of the strips have tabs 42 which can be secured to side members of the frame.
Patent GB-161132-A (GB)
Title: Improvements in or relating to magazines for firearms
IPC: F41A9/73
Filed: 1920-11-19
Abstract: 161,132. Auto-Ordnance Corporation, (Assignees of Payne, O. V.). July 27, 1920, [Convention date]. Cartridge magazines.-Relates to magazines of the kind described in Specification 141,533 which are formed of a flat drum having spiral guideways along which the cartridges are forced by a spring-actuated rotor to an opening in the periphery. According to the present invention, the rotor is formed of a unitary sheet-metal member with integral arms which engage the cartridges. The magazine comprises a body portion 9 having a spiral guide 18 for the bases of the cartridges, and a cover 12 having thicker spiral guides 19 for the bullet ends, the body and cover being journaled upon a hub 21 and retained by thin plate catches 22, 25 engaging grooves in the hub. The rotor 29, formed of dished metal plate, has flanged arms 31 passing between the grooved portions of the body and cover. The arms impel the cartridges with their radial portions 31, Fig. 1, and grooves 34 in the arms hold and impel additional cartridges. The cartridges are ultimately forced by a curved plate 36 against lips 16 which retain them until they are pushed endways into the gun by the breech-bolt. The rotor is actuated by a clock spring 40, the outer end of which is fastened within a casing 37 on the rotor, the inner end, which is arranged between sleeves 43, 41, Fig. 4, being connected to the hub by a pin 42. The spring is wound by a handle X and retained by a ratchet disc 45.
Patent GB-934879-A (GB)
Title: Liquid filtration apparatus
IPC: B01D35/00
Filed: 1960-09-23
Abstract: 934,879. Filters. F. HOFFMANNLA ROCHE & CO. A.G. Sept. 23, 1960 [Sept. 25, 1959], No. 32767/60. Class 46. Liquid to be filtered is withdrawn from a flask 12, along tube 60, past check valve 66 through filter 58 and into a flask 10 by application of vacuum to flask 10 along pipe 22 by valve 24. When the level of liquid in flask 10 reaches electrode 40, the latter effects reversal of valve 24 by a motor (not shown) so that the liquid is withdrawn from flask 10 along tube 50, past check valve 56, through filter 68 and back into flask 12. The process is repeated until the liquid is optically clear. Valve 24, instead of applying suction to the receiving flask, may apply gas, (e.g. air), under pressure to the flask being emptied. Figs. 2 to 6 (not shown) depict minor modifications of the tube and flask arrangements; in Figs. 4 to 6 the liquid tubes are connected to the bottoms of the flasks. Where the liquid is for medical use it may be transferred after filtration directly to an ampoule or like container through a T-connection in tube 50 or 60. 26 and 32 are gas filters.
Patent GB-1158623-A (GB)
Title: Improvements in or relating to Ringless Spinning Machines
IPC: D01H13/16
Filed: 1966-07-21
Abstract: 1,158,623. Break spinning; stop motions. VYZKUMNY USTAV BAVLNARSKY. 21 July, 1966 [19 March, 1966], No. 32862/66. Heading D1D. A yarn breakage sensing device in a breakspinning machine having an under-pressure chamber 3 has a lever 19, 20, 21, 22 one of whose arms 19 normally bears on the yarn 4 between the delivery channel 16 and a guide 18, has a permanent magnet 26 for operating a relay 25 when yarn breakage occurs, and secures the broken end e.g. against a resilient block 30, an arm 22 of the lever being exposed to a permanent magnet 24 to assist in the securing action: an electromagnet 23 is provided which when energised pulls the lever from its yarn securing position, past the yarn sensing position and when the break has been corrected is de-energised to allow the lever to return to its sensing position. Operation of relay 25 causes a signal lamp 28 to be illuminated and a pulse to be sent to a control device 13 to stop the drive 8 of the rollers feeding sliver to the separator 2. After a short interval, the control device reverses the direction in which the withdrawing-rollers 6 and the spool 7 are rotated. Electromagnet 23 is simultaneously energized to attract arm 21 connected to the lever, and overcoming the attraction of magnet 24, to release the yarn from the clamp and return the lever to sensing-position. With the reversal of the rollers 7 and 6, a length of yarn is fed back towards the chamber 3. When the yarn has failed through interruption of spinning, rotation of the spinning chamber is restarted when the piercing-length is being fed back; in the case of a break the spinning- chamber has continued to rotate throughout the operation described. In both cases, the length of yarn is sucked on to the collecting surface of the chamber by the reduced pressure prevailing in the chamber, and' tensioned. When this action has been completed, the drive 8 to the sliver feed-rollers is restarted and the drives 14, 15 are restored to their original directions so that spinning restarts. To ensure that the device can operate when spinning stops through power failure, an auxiliary source of power is provided.
Patent GB-512879-A (GB)
Title: Improvements in the manufacture of hardened rails
IPC: C21D9/04
Filed: 1937-11-29
Abstract: 512,879. Hardening rails. SMITH, P. RAYNER-. (Eisenwerk-Ges. Maximilianshutte). Nov. 29, 1937, No. 32866. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 7, 1938.] [Class 72] Railway rails containing 0.3-0.4 per cent of carbon and 0.7-1.5 per cent. of silicon are hardened by cooling at a rate intermediate those obtained by quenching in flowing water and by hot-bed cooling, for example, by blowing on air or a mixture of air and water, by spraying with water, by single or repeated immersion in stationary water, or by means of oil or salt baths. The steel may contain other alloying constituents, such as chromium, molybdenum, vanadium, or titanium, individually in amounts not exceeding 0.5 per cent. and in all not exceeding 2.0 per cent. Specifications 247,276, [Class 82 (i)], and 485,474 are referred to.
Patent GB-1458957-A (GB)
Title: Vehicle having an operators cab isolated from vibration
IPC: B60R21/11
Filed: 1975-08-07
Abstract: 1458957 Mounting tractor cabs CATERPILLAR TRACTOR CO 7 Aug 1975 [8 Aug 1974] 33067/75 Heading B7B An operator's cab 10 is attached to a tractor frame 11 by spaced rear posts 12 and front posts 27, the posts being attached to the frame by vibration damping means 13, 28, the front damping means 28 being releasably attached to the frame and the rear damping means 13 permitting the posts 12 to pivot about a transverse axis whereby the cab may be swung clear of the frame for servicing. The lower ends of posts 12 are apertured to receive the vibration damping means consisting of a metal bushing 17, rubber sleeve 16 and outer metal sleeve 15 and are secured between upstanding lugs 23, 24 on the frame. The lower ends of posts 27 are tubular and fit over members 34 bolted to the frame. The members 34 are apertured to receive vibration damping means 28 similar to said means 13. A rubber ring 40 is provided between the free end of the member 34 and the post 27.
Patent GB-759261-A (GB)
Title: Temperature and speed responsive devices
Inventor: SHAW HARRY
IPC: G05D29/00
Filed: 1952-12-31
Abstract: 759,261. Temperature and speed control systems. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Dec. 23, 1953 [Dec. 31, 1952], No. 33096/52. Class 40(1) [Also in Group XXXVI] The output resistance of a temperatureresponsive resistance network varies in accordance with the square root of the variable temperature. As shown, Fig. 1, the network comprises a temperature - responsive resistor 1 and fixed or constant resistors 3, 4. As explained fully in the Specification 1 has a resistance-temperature characteristic whose gradient increases with increasing temperature and 3 in series with 1 and 4 in parallel with 1, 3 are correctly proportioned whereby as 1 varies with temperature (T) (e.g. in the gas duct 2) the total or output resistance of the combination 1, 3, 4 varies with #T. The invention is applied in testing gas turbine plant and controlling or measuring the value N#T where N is turbine speed and T absolute temperature of the working gases. In Fig. 1 the temperature-responsive resistor 1 senses changes in temperature T of the working gases in duct 2 and a generator 5 delivers a voltage V proportional to turbine speed N so that with network 1, 3, 4 as the load on the generator 5 the load ammeter A measures N#T. In the automatic control arrangement of Fig. 2 deviation from a selected valve of N#T causes a change in load current A so that exciter winding 8 in series with resistance network 1, 3, 4 is not balanced by bias winding 15 and generator 14 accordingly rotates to drive a motor 16 in the required direction and thus move a regulator 9 to adjust the flow of fuel into combustion chamber 19 through feed pipe 10 until balance between windings 8 and 15 is restored corresponding to the selected value of N#T. The regulator 9 may be a throttle valve in the pipe 10 or the regulator for the fuel pump 13. The desired value of N#T is obtained by adjusting a rheostat 17 controlling bias winding 15.
Patent GB-361094-A (GB)
Title: Improvements in and relating to mortars, concretes and the like
IPC: C04B28/02
Filed: 1930-11-04
Abstract: The frothing of lime and cement mortars and concretes containing colloidal substances which tend to produce froth, e.g. albuminous substances or decomposition products thereof, is prevented by the addition of small quantities of salts of the higher fatty acids or products of sulphurization thereof, e.g. alkali resinates and sulpho-resinates.  The amount used is generally less than 1 per cent. The antifoaming agents may be added to the dry cement, lime, or other mortar former or to the mortars or concretes during mixing, e.g. dissolved or suspended in the gauging water.
Patent GB-1237874-A (GB)
Title: Detergent composition
Inventor: GLUCK BRUNO ANTHONY
IPC: C11D1/22
Filed: 1967-07-19
Abstract: 1,237,874. Detergent composition. UNILEVER Ltd. 17 July, 1968 [19 July, 1967], No. 33217/67. Heading C5D. A heavy duty detergent composition in the form of a homogeneous opaque or clear liquid comprises (a) 2-10% preferably 4-6% anionic detergent (b) at least 2% preferably 10-30% alkali-metal phosphate builder (c) 0À5-10% terpene (d) water. Anionic detergents mentioned are alkyl sulphates, alkaryl sulphonates, alkali-metal alkylaryl sulphonates, and sodium or potassium soaps derived from tallow, palm or coconut oil. The alkali-metal phosphates used may be sodium tripolyphosphate or potassium pyrophosphate. Other substances which may be added are perfumes, colouring matters, chelating agents such as tetrasodium ethylene diamine-tetraacetic acid and inorganic salts such as sodium carbonate sodium sulphate or borax.
Patent GB-1077586-A (GB)
Title: Improvements in or relating to a weapon for firing self-propelled missiles
IPC: F41A19/69
Filed: 1964-08-14
Abstract: 1,077,586. Band clamps. P. LOUREYS. Aug. 14, 1964, No. 33319/64. Heading E2B. [Also in Division F3]  A clamp for holding a sight of a weapon to a main tubular part thereof comprises a sleeve 23 on which are mounted supports 24 and a half cylinder 25 that is movable by means of a screw 26 towards and away from the opposing part of the sleeve.