baber/WOPTO huggingface dataset:
Patent GB-950554-A (GB)
Title: Improvements in or relating to the production of neoprene and product obtained
IPC: C08L11/00
Filed: 1962-08-14
Abstract: A stabilizer for polychloroprene rubber comprises 80-95% by weight of a terpene-phenol resin and 20-5% by weight of a calcium resinate, a zinc resinate, or a mixture thereof. The terpenephenol resins are the resinous condensation products of a terpene and a phenol.  They are prepared by reacting terpenes e.g. dipentene, pinene, limonene and various turpentine cuts with phenols e.g. phenol, cresol, n-butyl phenol, tertiary butyl phenol, propyl phenol in the presence of a catalyst e.g. sulphuric acid, sulphonic acid, aluminium chloride, boron trifluoride or the molecular compounds of boron trifluoride with ethers, acids, alcohols and phenols, and in the proportion of 1-2 moles of terpene per mole of phenol.  The resinate may be the calcium or zinc salt of resin acids, rosin or modified rosin, such as disproportionated rosin or hydrogenated rosin.  The preferred rosin is polymerized rosin.  The stabilizer is used in amounts of from 0.25-2.5% by weight of the polymer and may be incorporated in the chloroprene dispersion prior to polymerization or added to the alkaline latex prior to acidification or coagulation.  U.S.A. Specification 2,343,845 is referred to.
Patent GB-1354608-A (GB)
Title: Process of making a pneumatic tyre
IPC: B29D30/52
Filed: 1971-07-02
Abstract: 1354608 Moulding tyres FIRESTONE TIRE & RUBBER CO 2 July 1971 [23 July 1970] 31238/71 Heading B5A In a process of making a pneumatic tyre, a tyre tread is first prepared by adhering a breaker of rayon, nylon or polyester fabric to its inner surface and treating the fabric or cord to expose the fibres; the tread is then placed in a tyre shaped mould to which a liquid resinous material is fed to form the tyre sidewalls and crown portions with the liquid material engaging and surrounding the exposed fibres which is cured to produce a bond between the breaker and resinous material. As described, the tread 47 with cord material 41 treated by buffing to expose the fibres is placed in a centrifugal casting mould, Fig. 8, to which a polyurethane resin is supplied at 63 to bond with the exposed fibres and complete the tyre. The tread may be formed by placing the cord material 41 around the outer surface of an expansible annular tube 27 located on an annular mounting 28, winding a ribbon of tread material on to the material 41, placing an annular tread mould 32 around the assembly and inflating the tube by steam or hot water which cures the tread.
Patent GB-734398-A (GB)
Title: Reversible two-stroke cycle engine
Inventor: PETERSEN OVE
IPC: F01L13/02
Filed: 1953-11-12
Abstract: 734,398. Reversing. AKTIESELSKABET BURMEISTER & WAIN'S MASKIN-OG SKIBSBYGGERI. Nov. 12, 1953 [Nov. 21, 1952]. No. 31364/53. Class 7(5). Construction. In a reversible two-stroke engine with piston-controlled scavenging ports comprising fuel-injection pumps and exhaust valves driven by cams 2 and 3, Fig. 1, respectively, which are secured on a control shaft 1 in fixed angular relation to each other and are operative in both directions of rotation, the cams 2 and 3 associated with each cylinder are symmetrical with respect to a plane 4 containing the control shaft axis and are located with their plane of symmetry in the same angular relation to the lines of action 6 of the associated cam followers 5, as well as being designed so that re-setting for operation in the other direction of rotation requires the same angular displacement of both cams 2 and 3 relative to the crankshaft, planet wheels 14, Fig. 2, a sun gear 15 and an associated brake, being provided for imparting to the shaft 1, upon commencement of rotation of the crankshaft in the direction opposite to that for which the cams are set, an additional angular movement of the shaft 1 in the new direction of rotation such as will set the cams for proper operation in the new direction of rotation. The cams have their active parts 7 and 7<SP>1</SP>, Fig. 1, juxtaposed. To reverse the direction of engine operation the shaft 1 is turned through an angle V‹. of not more than 30‹ relative to the crankshaft so that the cams are now symmetrical about a line 41. The engine may have a modified control diagram for reverse operation in which case the lines 4, 4<SP>1</SP> would not be completely symmetrical about the line 6 as shown. The lines of action 6 of the cam followers 5 may coincide or be inclined to each other. A sprocket 9, Fig. 2, which is loosely journaled on a sleeve on the shaft 1 and chain driven from the crankshaft, is provided with a pair of radial slots 10, only one of which is shown ; in each slot slides a block 11 mounted upon a crank 12 that is housed in one of a pair of arms 20, only one of which is keyed to the shaft 1. Each crank 12 carries a planet wheel 14 engaging the sun gear 15 on a sleeve which is freely journalled upon the shaft 1, the sleeve carrying a notched wheel that can be arrested by a compressed-air operated roller. Operation. The fuel is cut off and the engine turned over, by compressed air, in the opposite direction of rotation from that previously obtaining ; the starting air causes the roller to arrest the notched wheel and the sprocket 9 is rotated by the engine whereupon the planet wheels 14 roll around the arrested sun wheel 15 and cause an angular change of twice the angle V‹ between the arms 20 and the sprocket, and thereby between the shaft 1 and the crankshaft. The roller is then released and the fuel supply to the engine resumed. Specifications 442,075 and 608,201 are referred to.
Patent GB-1299044-A (GB)
Title: Method of pest control
IPC: C07D295/12
Filed: 1971-07-05
Abstract: 1299044 Exterminating pests BOEHRING- ER INGELHEIM GmbH 5 July 1971 [3 July 1970] 31448/71 Heading A5E A method of exterminating aphids, bugs, cockroaches, spider mites and/or like animal pests or of inhibiting the proliferation thereof comprises applying to the aphids, bugs, cockroaches, spider mites and/or like animal pests an effective amount of N,N'-bis-[(1-formamidio-2,2,2-trichloro)ethyl] piperazine. Reference has been directed by the Comptroller to Specification 1218325.
Patent GB-630474-A (GB)
Title: Improvements in or relating to the lubrication of anti-friction bearings
IPC: F16N7/36
Filed: 1947-11-27
Abstract: 630,474. Centrifugal - action lubricators. ROTOL, Ltd., and DANVERS, E. Nov. 27, 1947, No. 31479. [Class 12 (iii)] In the lubrication of anti-friction bearings in which the outer race rotates, such as the transfer bearing of a counter-rotating airscrew, the lubricant is stored in a reservoir 23 fast with a ring-member 14 of the outer race 10, which member has channels 25, 26 in constant communication over a dam 27 with pockets 20, 21 on either side of the bearing. The pockets are sealed against the inner race carrier 11, 12 at 18, 19, and the reservoir 23 has chordwise baffles (not shown), each compartment formed thereby having a channel 25. When starting up the lubricant is centrifuged into the reservoir 23, the dam 27 retaining only sufficient for the correct lubrication of the bearing.
Patent GB-746518-A (GB)
Title: Improvements relating to the design and operation of continuous vertical retorts forthe production of coal-gas and coke from bituminous coal
IPC: C10B1/04
Filed: 1953-11-14
Abstract: 746,518. Coal distillation retorts. SMITH T. B. Nov. 3, 1954 [Nov, 14, 1953], No. 31650/53. Class 55(1). Continuously operating vertical retorts have gas draw off tubes m suspended from the top of the retort, which permit gas evolved outside or below the plastic layer f of inverted conical form to escape through slots n to the outlet b without penetrating the layer.
Patent GB-669477-A (GB)
Title: Improvements in and relating to number printing apparatus
Inventor: JONES KENNETH WARNER
IPC: B41K3/10
Filed: 1948-12-08
Abstract: 669,477. Number-printing apparatus. WARNER-JONES & CO., Ltd., K. Jan. 9, 1950 [Dec. 8, 1948], No. 31754/48. Addition to 583,013. Class 100 (ii). A device for lifting the spring stressed retaining pawls 6 of a numbering box as claimed in the parent Specification comprises a lever 9 having legs 10 to be engaged with abutments within and adjacent the sides 3 of the box, frame and having pawl engaging means, 12 or 21, which, when the lever is actuated, lift the pawls 6 from their associated ratchet wheels 5 to free their numbering wheels 1 and carrying retaining means, 15 or 19, to engage with the sides 3 to retain the lever 9 in its actuated position and hold the pawls 6 out of engagement with the wheels 5. The legs 10 of the lever 9 are cut away at 11 to engage pins at each side of the box or the spindle 7 on which the pawls 6 are mounted. The pawl engaging means may comprise teeth or tines 12 to engage side abutments 8 on the pawls 6 or a blade 21 to engage recesses in or shoulders on the pawls 6. The tines 12 or blade 21 may be integral with the lever 9 or may be part of a slide member 13 which carries the retaining member 15. The retaining member 15 comprises a hollow bar cut away to provide hooks 16 to engage behind shoulders 14 on the sides 3. A straight bar may however be used which may enter slots in the sides 3 or engage the shoulders 14. Such bar may be on a slide 13 or may be integral with or fixed onto the lever 9, the cut away parts 11 being longer to allow further downward movement of the lever. In further modifications of the retaining means, a pin 19 may slide in slots 20 in the sides 18 of the lever 9 or may exactly fit holes in such sides, the downward movement to engage the sides 3 being by movement of the lever. In place of the lateral projections 15, 19, a spring pawl or pawls may be provided to engage teeth in the sides 3. The device may be made as a sheet metal pressing or stamping. The device may also be used simultaneously to lift a spring stressed pawl or pin retaining the printing wheel shaft.
Patent GB-776618-A (GB)
Title: Improvements in and relating to the fixing of rotor blades of axial flow turbines and compressors
Inventor: FRANKEL ADOLF
IPC: F01D5/30
Filed: 1954-11-03
Abstract: 776,618. Bladed turbine and compressor rotors. ENGLISH ELECTRIC CO., Ltd. Oct. 27, 1955 [Nov. 3, 1954], No. 31793/54. Addition to 751,740. Class 110 (3). The parent Specification relates to a rotor of an axial-flow turbine or compressor in which the blades are mounted by their roots in an undercut circumferential groove, a window or recess being provided at one point in the groove to permit the blades to be pulled outwardly after entry and then moved circumferentially into position. The present invention provides alternative means to that shown in the parent Specification to prevent the final or locking blade which is disposed at the window or opening from moving radially inwards. In Figs. 1a and 1b two cheese-headed screws 15 are screwed into the root 8 of the locking blade, the heads of the screws overlying parts of the roots 7, 7<SP>1</SP> of the two adjacent blades and engaging in recesses therein. In a second embodiment, a pair of wedge members slide in an axial groove in the rotor between two blade rows, the wedges being forced apart by means of a conicallyended screw so as to engage under the narrow margins on the platforms of the two locking blades, one in each blade row. In Figs. 3a and 3b a pair of pin members 17, 17<SP>1</SP> engage in an axial slot formed in the root 8 of the locking blade, the pins being separated by a compression spring 19. When moved outwardly to the working position, the pins snap into engagement with recesses 18, 18<SP>1</SP> formed in the sides of the circumferential groove in the rotor thus preventing the blade from dropping inwardly. In a further embodiment, grooves are formed in the rotor on each side of the locking blade, a pair of obliquely cut filler pieces being inserted in each groove, each pair being secured in position by a weld seam. In Fig. 5a a screw 24 is screwed into the root 8 of the locking blade, the screw abutting against the bottom of the recess 1 which is disposed beneath the rotor groove, the projections on the blade root thereby being held in abutment with the peripheral ledges on the rotor.
Patent GB-444212-A (GB)
Title: Improvements in manhole or inspection cover fittings, drainage gratings or the like
IPC: E02D29/14
Filed: 1934-11-05
Abstract: 444,212. Road-surface boxes. CHATWIN, A., 22, Victoria Road, Tipton, Staffordshire. Nov. 5, 1934, No. 31802. [Class 107] Relates to manhole covers, drainage gratings, and like roadsurface fittings, of the kind in which the frame comprises two parts which interfit telescopically so that the frame and cover can be brought to lie flush with the road surface. According to the invention, the two parts 10, 11 of the frame are provided with cooperating teeth or inclines 24, 25, the vertical adjustment being effected by a partial rotation of the upper part 11 and by the insertion of packing-pieces between the faces of the cooperating teeth of the two parts. The teeth are formed on internal flanges 13, 14 of the two parts, and the cover 15 rests upon the upper face of the flange 14. The exterior faces of the part 11 and the cover may be slightly tapered to facilitate removal, and notches 26 may be formed in the teeth 25 to receive the end of a lever for rotating the part 11. To prevent dirt from accumulating between the cover and flange 14, the flange may be formed with a number of recesses. The outer face of the part 11 may be provided with recesses or projections to provide a key for the surrounding road material.
Patent GB-519492-A (GB)
Title: Improvements in or relating to tube or tubeless pneumatic tyres for vehicle wheels
IPC: B60C5/20
Filed: 1938-11-03
Abstract: 519,492. Pneumatic tyres. HERTEL, K. Nov. 3, 1938, Nos. 31866, and 31867. Convention dates, Nov. 3, 1937, and Sept. 26, 1938. [Class 144 (ii)] An air-tube comprises a series of annular chambers K, Fig. 1, 8, 9, Fig. 2, communicating with a common distributing space 10; enclosing a ball &c. 12 which is inflated to close communication between the chambers and the space 10. As shown in Fig. 1, the space 10 is inflated through a 3-way cock B'by. means of which the chambers may be placed in communication with a source of compressed air, or with the atmosphere. In the position shown, the cock is adjusted to shut off the chambers, and to permit inflation of the closure-member 12 through a valve 20. When this has been effected so as to seal the conduits leading to the chambers, thecock is moved so as to connect the ports C, F whereby excess pressure in, any of the chambers may be vented to atmosphere. In the modification shown in Fig. 2, the space 10 is arranged in the body of the tube and connected by conduits 11 to the annular chambers 8, 9. The Specification as open to inspection under Sect. 91 describes also a modification shown in Figs. 1 and 5 (Cancelled), in Which the tube, shown applied to a tyre for use on railway wheels, comprises two circumferential sets of cells 8, 9 connected by ducts 11 to a common inflation chamber 5 enclosing an inflatable sealing-tube 12. The latter is formed with interfitting ball ends 15, 19 and an inflation-stem 20. Fig. 3 (Cancelled) shows a device for use in vulcanizing the tube comprising an inflatable tube 22 and detachable hollow needles 25 for the ducts 11. This subject-matter does not appear in the Specification as accepted.
Patent GB-1300300-A (GB)
Title: Improvements in and relating to screens used in photomechanical reproduction
Inventor: TORR ALFRED GEORGE
IPC: G03F5/12
Filed: 1970-10-15
Abstract: 1300300 Lenticular screens A G TORR 9 Sept 1971 [15 Oct 1970 7 July 1971] 49115/70 and 31913/71 Headings G2J, G2M A screen for photo-mechanical reproduction comprises a transparent sheet having an outer surface, or an interface between materials of different refractive indices, which surface or interface has smooth regular wave form undulations. As shown, the cross-section of a screen with the pattern of Fig.1 is as shown in Fig.4. The screen can be produced photographically or mechanically, and may have formations which are shaped other than hexagonally. The screen may be coloured.
Patent GB-848377-A (GB)
Title: Improvements in or relating to capacitor-charging systems
IPC: H05B41/30
Filed: 1958-10-07
Abstract: 848,377. Transistor oscillators. SIEMENS & HALSKE A. G. Oct. 7, 1958 [Oct. 10, 1957], No. 31976/58. Class 40(6). [Also in Group XXXV] A capacitor charging system comprises a transformer 1, the primary winding of which is connected to a direct current source 2 by way of a transistor 3 whereby the primary winding is supplied with interrupted direct current whilst the secondary winding is connected to the capacitor 6 to be charged by way of a rectifier 4 and a resistor 5 having a negative temperature coefficient which causes the capacitor 6 to be charged at a constant rate; a resistor 7 being provided in the charging circuit the derived voltage from which is applied to the transistor 3 such that the transistor output current remains substantially constant until the voltage across the capacitor 6 reaches a predetermined value but which output current is reduced when the voltage across the capacitor exceeds this value. A second transistor may be used as an amplification stage if desired or the resistor 7 may be replaced by the winding of a relay the contact of which is in the circuit of the transformer primary winding. Again the transistors connected in a push-pull arrangement may be used and a further transistor may be used to control the push-pull connected transistors. A third, feed-back, winding may be provided on the transformer.
Patent GB-537271-A (GB)
Title: Improvements in and relating to the production of flour or meal from cereals
IPC: B02C11/08
Filed: 1939-12-13
Abstract: 537,271. Grinding-mills. PYKE, M. Dec. 13, 1939, No. 32157. [Class 59] [Also in Group I] As it is ground to flour or meal, cereal grain is heated to a temperature lying between 70‹C. and 125‹C. This prevents rancidity by inhibiting enzyme reaction. The heating medium may be steam or electricity. The amount of heat to be supplied to the grinding chamber may be kept to a minimum by lagging the grinding chamber and thus utilizing the heat of grinding. In Fig. 1 an electric heating element 7 is disposed between the fixed grinding plate 6 of a disc mill and the .hopper 2. The escape of ground material from the chamber 5 is regulated by an adjustable guard ring 10. A feed screw 4 is used. In Fig. 2, electric heating elements 15 are disposed within grinding rollers 14. A hopper 11 is provided with adjustable gates 12 for regulating the feed of grain by rollers 13. In both mills, the temperature can be controlled by a thermo-couple or other temperature-sensitive device.
Patent GB-1320171-A (GB)
Title: Rotary kiln for shock sintering
IPC: F27B7/32
Filed: 1970-07-02
Abstract: 1320171 Rotary kilns USS ENGINEERS & CONSULTANTS Inc 2 July 1970 [2 July 1969] 32254/70 Heading F4B Apparatus for processing raw material in the form of pellets containing moisture comprises a rotary kiln receiving the pellets at the upper end and moving them towards the lower end where a burner 16a directs hot gases through the kiln, and drying means 38 at the upper end of the kiln using the hot gas to dry out the pellets and having means for admitting fresh air to reduce the temperature in the drying means, the rotary kiln having a preheating zone adjacent the drying means and a reaction zone at the lower end, means being provided between these two zones for reflecting heat back into the reaction zone so that sintering of the charge is effected with less fuel. Combustion gases are withdrawn from the kiln through backhouse 22, bustle pipe 44, drier 38 and exhaust conduit 48 by variable speed induced draught fan 28a. Tempering cooling air from pipe 46 may be drawn into the bustle pipe 44. The reaction zone temperature is automatically regulated by control of the fuel supply to burner 16a, the pressure in the kiln by adjustment of exhaust damper 46b in pipe 42 and the temperature of the combustion gases leaving the drier 38 by control of the fuel supply to an auxiliary burner 68 in the pipe 42, whilst the amount of tempering air drawn into the bustle pipe is controlled by adjusting damper 46a in pipe 46 to produce a constant gas mass flow through Venturi section 49 in exhaust conduit 48. The feed of material to the kiln, past material valve 72d is varied in accordance with the rate of rotation of the kiln. In another embodiment (Fig. 1, not shown) in place of a separate drier, the initial portion of the kiln forms a drying zone to which the raw material is directly charged from a weigh feeder, by a shot extending through the backhouse. Longitudinally extending partitions and baffle means (18a, 18b, 18c) in the drying zone, divide the material in this zone into four separate streams. An automatically dampered supply of tempering air from a shroud (24) surrounding the kiln at the downstream end of the drying zone is drawn into the kiln at this point to limit the drying zone temperature to 700‹ F. A restricted diameter particle reservoir forming portion (26) between the preheating and reaction zones effectively limits the material layer thickness in the latter zone to ensure complete reaction of the raw material. A rotary cooler (30) for the sintered product is provided. In a further modification (Fig. 4, not shown) the restricted diameter portion extends over the whole length of the preheating zone. Dimensions of, and material residence times in the various kiln portions are given.
Patent GB-1497720-A (GB)
Title: Cylindrical hay balers
IPC: A01F15/07
Filed: 1975-08-04
Abstract: 1497720 Cylindrical baler INTERNATIONAL HARVESTER CO 4 Aug 1975 [16 Sept 1974] 32456/75 Heading A1F A baler substantially as described in Specification 1497718 has a belt-tightener assembly 122 comprising adjustably positioned stops 148, 150 for limiting the extent of downward movement of the belt-tightener arms 124, 126 and thus leaving the belts 54 slack during initial bale-formation, to prevent hay escape, until sufficient bale-bulk tightens the belts 54 onto their drive rollers 66, 68 to start the belts moving, the section 54' of the belts 54 expanding upwardly to allow completion of a bale.
Patent GB-1377052-A (GB)
Title: Device for transferring toque from a drill-sleeve to a coaxial shaft in a drilling machine
IPC: E21B3/02
Filed: 1973-07-09
Abstract: 1377052 Rock drill ATLAS COPCO AB 9 July 1973 [7 July 1972] 32540/73 Heading B3C [Also in Division F2] In a rock drill a device for transferring torque from a drill sleeve 5 to a tool 3 comprises an intermediate sleeve 6 which is a sliding fit in the drill sleeve and has non-circular inner and outer surfaces which coact with similar surfaces on the tool 3 and in the sleeve 5. Tool 3 is rotated by gearing 8, 9, driven by a motor or ratchet and pawl, and is impacted by a hammer 2.
Patent GB-300277-A (GB)
Title: Improvements in gas producers
IPC: C10J3/46
Filed: 1928-11-07
Abstract: 300,277. I. G. Farbenindnstrie Akt.- Ges. Nov. 10, 1927, [Convention date]. Addition to 214,544. Producers.-In a gas producer of the kind described in the parent Specification, in which producer gas or water gas is obtained from small sized fuel which is kept in strong agitation throughout the whole depth of the fuel bed, a steam boiler A<1> is enclosed in a.n upper enlarged part A of the producer, or in a dust separator adjacent to the producer. When it is not desired to take off the producer gas, air can be blown into the chamber above the fuel bed in sufficient quantity to burn the gas completely. Specification 279,316, 296,713 and 296,751 also are referred to.