baber/WOPTO huggingface dataset:
Patent GB-1484535-A (GB)
Title: Vehicle brakes
IPC: B60T11/34
Filed: 1975-01-24
Abstract: 1484535 Load-responsive braking systems VOLKSWAGENWERK AG 24 Jan 1975 [28 Jan 1974] 3095/75 Heading F2F A brake pressure limiting device 14 for a dual circuit braking system comprises two coaxial valve bodies 1a, 1b each with an inlet 9a, 9b from a master cylinder 13 and at least one outlet 10a, 10b to the braking system and an axially movable valve member 3a, 3b for isolating the inlet from the outlet(s) controlled by a member 2a, 2b movable in response to common actuating means 6a, 6b, 4 in a chamber 8 disposed between the two valve bodies 1a 1b and subject, through an inlet 7, to a vehicle load-dependent source of pressure. As shown the pressure limiting valve 3a closes when the braking pressure on the left of the member 2a exceeds the combined spring and hydraulic pressure on its right hand end communicated from a rear axle load-responsive brake force distributer 15 which operates by either reducing (Fig. 2) or limiting (Fig. 3) the rear brake actuating pressures on load transfer to the front of the vehicle. In Fig. 2 each valve body 1a, 1b has one outlet coupled to a front wheel actuator 16 and one to the pressure varying distributer 15 thence to a rear wheel actuator 17. In Fig. 3 each master cylinder chamber is connected to an inlet 9 of the valve body 1 and to the pressure limiting load-responsive distributer 15, one of the outlets from the distributer 15 being connected to the inlet 7 of the device 14.
Patent GB-722195-A (GB)
Title: Improvements in fresh pea cleaning and washing machines
IPC: A23N12/02
Filed: 1952-02-07
Abstract: 722,195. Washing peas. JONES, T. M. Jan. 20, 1953 [Feb. 7, 1952], No. 3235/52. Class 82 (2) A machine for washing peas comprises a chamber which is wide at its top portion and narrow at its base with inclined walls extending between the wide and narrow portions, the peas after removal of sand, mud and stones being delivered along with water into said chamber, cross partitions dividing the part of the chamber above the narrow base portion into compartments, the peas or sinkers dropping into the narrow base along which there is a rapid flow of water and travelling therealong to an outlet of cross-sectional dimensions similar to those of the narrow base, the partitions providing for a slow rate of flow along the chamber compartments of water and floating debris to one or more side discharge shoots on the chamber for such debris and surface water. The peas are fed into a hopper a supplied with water through a pipe b and pass over a sand separating grid u, sand being received into, and discharged from, the troughs c. A skimmerplate across the passage ejects floating matter down a trough g<SP>1</SP>, and the peas then pass under adjustable baffles f, the stones &c. being deposited. Water jets e in the troughs v tend to keep the peas buoyant. The peas pass into a chamber i which is broad at the top, with a narrow bottom portion joined to the rest of the chamber by sloping sides. The chamber has cross partitions m each having an opening at n with an adjustable gate o. Ramps p cause any peas passing along the channel to rise momentarily and release any light material which may have become entrained with the peas.
Patent GB-1204273-A (GB)
Title: A schaft furnace
IPC: C21B7/10
Filed: 1968-01-22
Abstract: 1,204,273. Cooling blast furnaces. DUISBURGER KUPFERHUETTE and DEUTSCHE BABCOCK & WILCOX-DAMPFKESSEL-WERKE A.G. 22 Jan., 1968 [18 March, 1967], No. 3282/68. Heading F4B. A blast furnace (not shown) is cooled by means of evaporative cooling boxes e.g. 1-9 embedded in its brickwork. The furnace is divided into superposed sections A-D, to respective steam and water drums of which 10-13, softened and filtered feed water is supplied through lines 29-32 respectively under the control of valves 33-36 respectively. Flow meters 37-40 respectively indicate the flow in each of the lines so allowing any section with a leaking cooling box to be identified. The series connected boxes e.g. 1-4 of each section together with the downcomers e.g. 14, 15, the steam and water drum e.g. 10 and the lower water distributer header e.g. 22 of that section form a closed natural or forced circulatory cooling system for that furnace section. Steam generated is released to atmosphere from the steam and water drums, or passed to a condenser (not shown). The lowermost furnace sections, which are the hottest have less cooling boxes connected in series than the cooler upper furnace sections. Steam in line 42 from drum 10 of the hottest furnace section A may be used to heat water in header 25 of the coolest furnace section D, condensate thereby produced being separated in separator 43 and recycled by line 44 back to the drum 10.
Patent GB-922202-A (GB)
Title: Improvements in or relating to air blasting devices
IPC: E21C37/14
Filed: 1961-01-27
Abstract: 922,202. Blasting-cartridges. CHARBONNAGES DE FRANCE. Jan. 27, 1961 [Jan. 30, 1960], No. 3339/61. Class 9 (1). A blasting-cartridge utilizing compressed gas comprises a container 4, vents 8, a rupturable plate or piston 7 and a gas supply tube 5, the cartridge being attached to an inlet valve 2 and an oil reservoir 1. To reduce the possibility of explosion due to oil entrained with the gas and entering container 4 where the oil and gas mixture is subjected to a pressure and temperature increase, the tube 5 is provided with orifices 9. According to the invention, repeated tests have shown the following tube lengths and dispositions of orifices to be advantageous. A tube 5 which is at least twothirds the length of the container 4 and which has at least four orifices, the diameters of the orifices being at least one-third that of the internal diameter of the tube. The orifices may be positioned at equal intervals along the tube and their diameters may increase from a minimum at the inlet end to a maximum at the free end of the tube (see Fig. 3A). Alternatively, the orifices may be of equal diameter, the spacings between them decreasing from the inlet end to the free end of the tube. Also the orifices may be arranged helically along the tube. Again, according to the invention, it is advantageous to choose the positions and diameters of the orifices so that the mass of gas introduced per unit volume of the container is substantially constant at any given moment over the entire length of the container.
Patent GB-938242-A (GB)
Title: Fluted connector
IPC: H01R4/20
Filed: 1962-01-29
Abstract: 938,242. Sleeve couplings. BURNDY CORPORATION. Jan. 29, 1962 [Feb. 2, 1961], No. 3356/62. Class 38 (1). A tubular compression connector has longitudinally extending flutes so as to reduce the force necessary to fit it. The flutes may extend either from the inner or outer surface, and may have any cross-section, but are preferably wider within the body of the connector than at the surface. The advantages of the invention are that a given size of connector can accommodate a greater range of wires sizes and lighter tools may be used to fit this connector by compressing its wall than is otherwise possible.
Patent GB-1000090-A (GB)
Title: Block copolymers, compositions containing them, and process of preparing these blockcopolymers
IPC: C08F297/04
Filed: 1963-01-28
Abstract: Block copolymers are made which have the formula A-B-A, in which each A is an independently selected non-elastomeric block having a number average molecular weight in in the range of 2000 to 100,000 and a glass transition temperature above 25 DEG  C., and B is an elastomeric polymer block having a number average molecular weight in the range of 25,000 to 1,000,000 and a glass transition temperature below 10 DEG  C.  The A blocks may be derived from monomers such as styrene and its derivatives, acrylonitrile, and acrylic and methacrylic esters.  The B blocks may be derived from butadiene, isoprene, methylisoprene, or mixtures of butadiene with styrene or acrylonitrile. If desired, the B block may be a tapered block, i.e. it is prepared from a mixture of monomers containing a diminishing quantity of an A block monomer and an increasing quantity of a B block monomer.  The block polymers are made by the sequential polymerization of A block monomer, followed by the polymerization in the same medium of B block monomer, and then further polymerization of A block monomer. The polymerization is preferably carried out with the aid of lithium or an organolithium compound as a catalyst.  The resulting block copolymers exhibit elastomeric properties in the unvulcanized state, and may be mixed with carbon black, extender oil and other rubbery polymers, e.g. cis-1,4-polyisoprene. The examples describe the preparation with the aid of sec.-butyl lithium of block copolymers in which the A blocks are derived from styrene and the B blocks from butadiene, isoprene or, in the case of a tapered block, styrene and isoprene. Specification 862,507 is referred to.
Patent GB-765001-A (GB)
Title: Improvements relating to disc brakes
IPC: F16D55/14
Filed: 1955-02-07
Abstract: 765,001. Disc brakes. LAMBERT BRAKE CORPORATION. Feb. 7, 1955 [April 9, 1954], No. 3592/55. Class 103 (1). In a disc brake of the kind in which a pair of rings 13 and 14, having circumferentially spaced segments 13<SP>1</SP> and 141 of friction material on their outer faces, are spread apart into engagement with the inner radial sides of a drum as a result of the camming action of balls 20 in recesses 21, one of the rings 14 is anchored against movement by the engagement of bearing surfaces 18 thereon with the opposite faces of supporting lugs 15 on the mounting plate 7, the circumferential movement of the other ring 13 being limited by a screw member 49, Fig. 4. When the direction of rotation of the drum is such as would be caused by forward movement of a vehicle, the full self-energizing action is allowed to take place by the screw member 49 turning in its lug 50 and the degree of circumferential movement will depend on the amount of wear on the friction pads 13<SP>1</SP> and 14<SP>1</SP>. On release of the brake the ring 13<SP>1</SP> may only move circumferentially to the extent of the clearance between the screwhead 54 and abutment 52, the head 54 being prevented from turning by the engagement.of a spring pawl 56 in the serrations 57 and thus the clearance between the surfaces is reset. When the drum rotation is reversed no self-energizing action takes place but this is not important since an automobile does not require intensive reverse braking. The brake is actuated by fluid pressure in an annular cylinder 22 acting against a piston 25. A U-shaped leaf spring 48 anchored by a bolt 47 at one end and pressing downwardly against the disc assembly with the other end prevents vibration in the brake when not actuated. Specification 729,726 is referred to.
Patent GB-664602-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B13/00
Filed: 1949-02-09
Abstract: 664,602. Photographic objectives. KODAK, Ltd. (Eastman Kodak Co., Litten, W., Aklin, G. H., and Altman, F. E.). May 8, 1950 [Feb. 9, 1949], No. 3602/49. Class 97 (i). In a photographic objective of the kind which consists of a simple negative lens 2 between two simple positive lenses 1 and 3 which have their outer surfaces R<SP>1</SP> and R 6  the more strongly curved, the refractive index of the negative lens is less than the average refractive index of the two positive lenses, the power of the negative lens (calculated as the sum of the surface powers) is between - 2.5/F and - 2.86/F, where F is the focal length of the objective, the thickness t<SP>1</SP> of the front positive lens is greater than that t<SP>3</SP> of the rear positive lens, the front air-space s<SP>1</SP> is between one-third and 0.7 times the rear air-space s<SP>2</SP> and the #-value of the negative lens is less than 0.62 times the average of the V-values of the two positive lenses. In one form, the overall length of the objective is between 0.4F and 0.8F; the thickness t<SP>2</SP> of the negative lens is between 0.04F and 0.12F; the thickness of each positive lens is between 0.05F and 0.28F; the front air-space s<SP>1</SP> is between 0.045F and 0.17F; the radius of the rear surface R<SP>4</SP> of the negative lens is between 0.3 and 1 times the radius of the front surface R<SP>3</SP> of the negative lens; the average of the powers of the two positive lenses is between 1.6/F and 1.8/F; the #-value of the negative lens is between 25 and 40; and the refractive index of the negative lens is between 1.58 and 1.82. Preferably, the sum of the front airspace and the thickness of the front positive lens is between 0.8 and 1.1. Specification 624,789, [Group XXIII], is referred to and optical data are given for seven examples.
Patent GB-1365585-A (GB)
Title: Method and apparatus for sewing sliding clasp fastener chain to an article
Inventor: WHITE M H
IPC: D05B3/18
Filed: 1972-01-26
Abstract: 1365585 Sewing LIGHTNING FASTENERS Ltd 22 Dec 1972 [26 Jan 1972] 3687/72 Heading DIG [Also in Division E2]  Sliding clasp fastener chain 13 is sewn to garment material positioned on the stringer by a sewing machine having a tool 27, for forming a bottom end stop on the fastener, disposed at the inlet side of the sewing zone, chain cutting tools 41-43 disposed at the outlet side of the zone and means to operate the tools. The chains 13, with a previously formed stop at its leading end, is fed beneath guide 36 and stop forming anvil 38 to the zone, while the garment panels (10, Fig. 1 not shown) are fed over guide 36 and each side of guide fin 37, one panel underlying roller 34. The work is fed and sewn by twin needles 15 until the trailing edge of a panel (10) passes roller 34 which falls to actuate switch 30 which in this embodiment actuates a timer 45 to stop the machine and operates tool 27 to fuse fastener elements of the chain to form an end stop. Sewing is then resumed until cutter 42, 43 can be operated by manual switches 44 to sever the panels and sewn chains from the chain length. In another embodiment (Fig. 4 not shown) an air sensor (51) replaces roller 34 and the stop tools (58-61) are mounted on a swingable arm (53) so that sewing and feeding may proceed during element fusing. The stop tool may be actuated by a pneumatic piston and cylinder, as shown, or by an electric solenoid. A staple type stop may be provided.
Patent GB-1221765-A (GB)
Title: Turf working implements
Inventor: HARGREAVES DEREK BURTT
IPC: A01B33/02
Filed: 1969-01-22
Abstract: 1,221,765. A turf working implement. SISIS EQUIPMENT (MACCLESFIELD) Ltd. 21 Jan., 1970 [22 Jan., 1969], No. 3724/69. Heading A1B. A turf working implement comprises a reel shaft 10 supported at either end in a turf working machine and capable of being rotated by means of sprocket 12, there being spacers 13 at intervals along the shaft, supporting staybars 15 which run parallel to the axis of the shaft 10. Stiff wire tine members 16 are mounted on the staybars 15 by means of helical coils 17 formed at the root of the tine members, permitting their free pivotal movement on the staybars and a flail action when the reel is rotated and moved over the ground.
Patent GB-852427-A (GB)
Title: Current-responsive electric circuit-breaking device
IPC: H01H71/50
Filed: 1957-12-02
Abstract: 852,427. Thermal switches. DEYRAIL, C. Dec. 2, 1957, No. 37527/57. Class 38 (5). A current-responsive switch comprises a tubular casing having a terminal end cap at each end, a contact-carrying thermal element normally engaging a contact on a resilient member held under compression between a pair of supports, so that deformation of the element displaces the resilient member across dead centre to open the contacts rapidly. In Fig. 1, the thermal element is a bi-metal 19 connected to end cap 2 and carrying a contact 7 co-operating with contact 6 on a snap-acting strip 14, the contacts being reclosed by a resetting button 8a. A blow-out coil 18 is connected in series with the contacts. In a modification, Fig. 2 (not shown), when the strip 14 carries an additional contact co-operating with a contact on a similar thermal element connected to the opposite end cap 1 of the casing, so that the switch is rendered operative again by reversing it physically in its terminals. This arrangement may have two blow-out coils, one of which is connected in each position of the switch. In an alternative arrangement, a switch similar to that of Fig. 2 is mounted between two terminals connected through a change-over switch to a supply terminal.
Patent GB-689580-A (GB)
Title: Improvements in or relating to devices for locking a rod, tube, or the like which isslidable in a holder
IPC: F16B21/20
Filed: 1950-02-14
Abstract: 689,580. Coating webs. MASON, J. A., and MOLINS MACHINE CO., Ltd. Feb. 13, 1951. [Feb. 14, 1950] No. 3763/50. Class 140. [Also in Groups XXIV and XXVIII] A rod, tube, or the like is locked in position in a holder in which it is slidably mounted by means of a transversely. slidable pin which is pressed into engagement with the rod, tube, or the like by a circlip passing around the holder and pin. The pin may have a hole through which the rod, tube, or the like passes. As shown, an adhesive-supplying tube 3, which is a sliding, fit in an orifice 1 in a nozzle 2 is locked in position in the nozzle by means of a pin 5 with a transverse hole 6 through which the tube passes. The pin is accommodated in a blind hole 4 transverse to the bore of the nozzle and is pressed into engagement with the tube 3 by a circlip 9 located in a groove around the nozzle. A spring 10 engaging a collar 11 on the tube may tend to eject the tube from the nozzle thereby facilitating adjustment when necessary to compensate for wear of the tube. The tube may be serrated, and the outer end of the pin 5 may have a threaded hole 8 to facilitate withdrawal. Specification 643,856 is. referred to.
Patent GB-432729-A (GB)
Title: Improvements in or relating to packing for spigot and socket and like joints
IPC: F16L21/04
Filed: 1934-02-05
Abstract: 432,729. Stuffing box packing. LEAD WOOL CO., Ltd., and MOULTON, F., Snodland, Kent. Feb. 5, 1934, No. 3790. [Class 122 (v)] A packing, for spigot- and-socket pipe joints comprises a deformable main ring 19, e.g. of lead aluminium or other soft metal or of spun sheet metal, Fig. 4, and one or more secondary rings 17 of rubber, asbestos, soft lead, &c., contained in grooves in the joint faces 12, 13 of the main ring, and pressed against the spigot and socket by deformation of the main ring under axial pressure. The faces 12, 13 or the bottom walls of the grooves may be serrated. In a further construction, Fig. 7 the main ring may be in two parts 29, 30. Specifications 246,554 [Class 122 (v)], and 374,493 are referred to.
Patent GB-875405-A (GB)
Title: Improvements in or relating to universal joints
Inventor: MOLLART KENNETH ARTHUR WILLIAM
IPC: F16D3/42
Filed: 1959-02-03
Abstract: 875,405. Universal joints. MOLLAIT ENGINEERING CO. Ltd. Feb. 3, 1960 [Feb. 3, 1959], No. 3824/59. Addition to 827,256. Class 80 (2). In a Hooke's joint of the parent Specification wherein terminal member fork arms 18 flanged, splined or serrated for shaft attachment are pivotally retained in axial slots 19 in an intermediate member 12 by radial pins 20, the said pins are retained by bolts 33 extending therethrough and screwed in a central ring 29. The ring bore defines an oil reservoir 23 sealed by end-plates 24 and filled through a channel 31. Oil is centrifugally fed to needle rollers or, as shown, steel-backed bronze bushes 22 in the fork arms through radial channels 32, a circumferential channel 30 and channels 40, a portion of each bolt shank being of reduced diameter to permit oil flow therealong. Tab washers 35 lock the bolts.
Patent GB-1478745-A (GB)
Title: Separation of halogenated hydrocar]ons from water
IPC: C02F1/20
Filed: 1975-01-29
Abstract: 1478745 Purifying water BRUCKNER APPARATEBAU GmbH 29 Jan 1975 [22 Feb 1974] 3854/75 Heading C1C Water contaminated with halogenated hydrocarbons, in particular water from the solvent cleaning of textile material, is purified by supplying the water to a residence zone wherein the gas phase in contact therewith is repeatedly renewed. The gas (e.g. air) is preferably introduced via nozzles into the water in the zone which may also be agitated and heated.
Patent GB-847246-A (GB)
Title: A process for the preparation of pyrrole-ª‡, ª‡-dicarboxylic acids or their salts or esters
Filed: 1957-02-05
Abstract: Pyrrole -a :a 1- dicarboxylic acids are prepared in salt form by a process comprising reacting pyrrole or a b - and/or b 1-hydrocarbon substituted pyrrole free of other substitution, with free carbon dioxide and a basic-reacting compound of an alkali-metal or of monovalent thallium at an elevated temperature and so obtaining an alkali metal or thallium salt of a pyrrole a :a 1-dicarboxylic acid which, if desired, may be converted into the free acid or its esters. The basic-reacting compound is preferably a carbonate but the bicarbonates, oxides, hydroxides, formates or oxalates are also suitable; they are preferably used in excess of the amount required to form the salt of the pyrrole dibasic acid.  Reaction is generally effected at above 200 DEG C., e.g., 250-400 DEG C. and suitably under pressure with excess of carbon dioxide, though pyrrole may be reacted in the vapour phase at atmospheric pressure.  If desired, there may be present as catalysts, zinc, cadmium, lead, mercury and iron and their compounds such as their oxides or salts with inorganic or organic acids, e.g. ZnCl2 or CdF2.  There may also be present, organic solvents or diluents and inert fillers such as inert salts, sand, carbon, kieselguhr, bentonite and metal powders or turnings. The examples describe the preparation of the sodium, potassium or calcium-potassium salts of pyrrole-or b -methyl pyrrole-a -a 1-dicarboxylic acids which may be purified by treatment in water with active carbon and their conversion to the free acids by acidification.  Other substituted pyrroles mentioned include b -ethyl pyrrole and b -methylb 1-propyl pyrrole. The dicarboxylic acids may be used in the preparation of polyesters and plasticisers.
Patent GB-1083621-A (GB)
Title: An awning support stanchion for ships lifeboats
IPC: B63B17/04
Filed: 1966-01-28
Abstract: 1,083,621. Awning stanchions. SMITH BROS. (GOOLE) Ltd., and E. HEPPENSTALL. Aug. 5, 1966 [Jan. 28, 1966], No. 3874/66. Heading B7S. An awning support stanchion comprises two L-shaped or curved circular section members 1, 2 pivotally connected at one end to a link member 3 permitting them to fold flat one against the other and alternatively allowing them to form an inverted U for their other ends to enter sockets provided at opposite ends of the boat. The link member may be provided with means to receive a ridge wire extending from a fore to an aft part of the boat.