baber/WOPTO huggingface dataset:
Patent GB-337562-A (GB)
Title: Improvements in or relating to a process for protecting iron and steel
IPC: C23C10/34
Filed: 1929-10-10
Abstract: 337,562. Folliet, A., and Sainderichin, N. Oct. 10, 1929. Cementation.-Iron and steel articles are protected against corrosion by heating them at a temperature between 850‹ and 1050‹ C. in a mixture consisting of (a) finely granulated aluminium free from copper or zinc, the proportion af alumina present as impurity being not greater than 6 per cent, (b) an inert support of high thermal conductivity e.g. crystallised carborundum free from graphite, this inert support constituting between 2/5 and 3/5 of the volume of the mixture, and (c) 2 to 5 per cent of one or more chlorides of non-ferrous metals alloyable with iron such as chromium, nickel, manganese etc. These metallic chlorides may be used in the form of the simple salts or as double chlorides of the metals with alkali metals or ammonium. From 1 to 2.5 per cent of dry ammonium chloride may be added. A layer of an alloy of iron, aluminium and the metal present in the mixture as chloride is formed on the iron or steel object.
Patent GB-655676-A (GB)
Title: Apparatus for excavating and trenching
IPC: E02F5/02
Filed: 1947-11-20
Abstract: 655,676. Excavating earth. JOHNSON (MACHINERY), Ltd., C. H., NEESOM, C. H., DEARDEN, B. B., and HARTLEY, J. A. Nov. 20, 1947, No. 30758. [Class 68 (i)] An apparatus for excavating or trenching comprises a vertically disposed boring tool fitted in a close fitting tube which is mounted on a wheeled chassis and is adapted for vertical and lateral movement relatively thereto, means on the chassis for raising and lowering the tool and tube, and a power unit on the chassis adapted selectively to drive the chassis and to rotate the tool within the tube. In the form shown, Figs. 1 and 2, the main framework is carried by a pair of road wheels 12, steerable from a wheel 15, and a rear pair of driving wheels adjustable for height from the chassis by means of a manually rotated drum 52. The upper faces of each of the lower flanges 11a of the longitudinal side members 10 carry a framework 16 by means of flanged wheels 17, the framework 16 being moved relative to the longitudinal members by a manually rotated toothed wheel 45, journalled to the framework, engaging a rack 46. A base member 19 is slidably mounted on the transverse member 18 and can be moved in a transverse direction by racks and manually rotated pinions 42, 43. The base member 19 has an aperture in which is slidably located a tubular tool holder 20, for a boring tool 21, which may be raised or lowered by a rack 22 attached to the tool holder and a toothed wheel 23 turned by a handle 25. The boring tool 21 is in the form of an Archimedian screw and the spoil is discharged through an aperture 26. The boring tool is rotated by means of a gear wheel 28 meshing with a pinion 29 splined to a vertical shaft 30, the lower end of which is driven from the engine 39 via bevel gears 33 and 34, a transverse shaft 35, and further bevel gears 36, 37. The bevel wheel 36 also drives a shaft 47 which is fitted with a universal coupling 49 by means of which an inclined shaft 50 can be engaged to drive the rear axle 51. The coupling 49 can be disengaged to allow the framework 16 to traverse longitudinally and the main chassis is held steady during operations by the stay members 58.
Patent GB-1380746-A (GB)
Title: Safety valves particularly for petroleum wells
IPC: E21B34/02
Filed: 1972-06-30
Abstract: 1380746 Wells &c GRAY TOOL CO 30 June 1972 [30 July 1971] 30807/72 Heading E1F [Also in Division F2]  In a safety-valve suitable for mounting on the tubing head of a well, and comprises a body 10 having a bore 14, a valve 18 movable to open and close the bore, a valve operating piston 146 in a cylinder 172, and a piston rod 130 in the connection between the valve and the piston, fluid leaking around the valve acts on the piston rod in a sense tending to close the valve. The valve is held against a spherical seat formed in the bore by a seat 20 acting as a retainer. One of the seats may be spring biassed towards the valve or have a resilient annular sealing. Grease from a chamber 52 lubricates the valve. The valve is turned through 90 by a shaft 70 having a pinion 68 engaging threads 136 on the piston rod 130. When the valve is closed a surface 138 on the rod engages a seat 170 on a nut 154 to form a metal to metal seal which is not damaged if heat destroys seals 168 in the nut. The piston is moved to open the valve by fluid supplied by a line 177, a spring 182 acting on the piston tending to move the valve to the closed position. Well fluid at excessive pressure leaking about the valve acts through the grease in the chamber 52 on the inner end of the rod to urge the rod to close the valve. A rod 180 at the free end of the rod 130 acts as an indicator of valve position and may be moved axially to move the valve manually. The safety valve shown is for a dual completion well but the invention may be applied to single and multiple completion wells. A christmas tree may be mounted on the body and a master valve may be cast integrally withthe body. In a modification (Figs. 4-6 not shown) the valve is a gate valve having an aperture aligned with the bore in the open position. In the closed position a non-return valve is concentric with the bore and permits supply of fluid to the well.
Patent GB-748599-A (GB)
Title: Improvements in control arrangements for pairs of rollers, particularly for use in roller mills
Inventor: DONATH HANS
IPC: B02C4/42
Filed: 1952-12-05
Abstract: 748,599. Roller mills. ZENTRALES FACHBUERO MUEHLENBAU VEB VERWALTUNG VOLKSEIGENER BETRIEBE NAGEMA. Dec. 5, 1952, No. 30855/52. Class 59. In an automatically operating control arrangement for a pair of grinding rollers adapted for rotation at the same or different speeds, the rollers are driven through a freely acting differential gear of any known form, the driving shaft and the rollers of the pair each being connected, either directly or through a step-down drive in each case, with a different element of the differential gear. The differential gear may be disposed inside one of the rollers. In the form shown, the grinding rollers 1, 2 are driven at different speeds through a differential gear comprising sun and planet gears 9, 11, respectively and an internal ring gear 6 which forms part of a casing 7 secured to a drive pulley 5. The sun gear 9 is keyed on the shaft 8 of the fast roller 1 and the planet wheels 11 are secured to a carrier 10 freely rotatable about the shaft 8, the shaft 13 of the slow roller 2 being driven from the carrier 10 by means of a chain 14 passing over a sprocket wheel 12 provided on the boss of the carrier. The feed rollers 16, 17 are driven from a belt pulley on the other end of the shaft 13. The gap between the grinding rollers is adjustable and the adjustment is judged from a revolution counter on the grinding rollers, which may also be directly adjusted according to the ouput of ground material.
Patent GB-505497-A (GB)
Title: Improvements relating to screw propellers and protective coverings therefor
IPC: B64C11/20
Filed: 1937-11-10
Abstract: 505,497. Screw propellers. BRITISH THOMSON-HOUSTON CO., Ltd., MARTIN, R. I., and NEWBOUND, R. Nov. 10, 1937, No. 30879. Addition to 457,935. [Class 114] The protectivecovering for a screw-propeller blade according to claim 2 of the parent Specification is provided with a further layer of a thermoplastic material.
Patent GB-378715-A (GB)
Title: Improvements in or relating to internal combustion engines which ignite by raising the temperature of the charge
IPC: F02B3/00
Filed: 1931-11-07
Abstract: 378,715. Four-stroke engines. TATE, M. H., 12, Denbigh Street, Victoria, London. Nov. 7, 1931, No. 30913. [Classes 7 (ii) and 7 (iii).] To raise the pressure of the charge so that it ignites the fuel as it is injected into the cylinder, a portion of the air charge is rejected from the power cylindei on the compression stroke and is delivered to an independent pump g ; this portion is highly compressed therein and returned to the main air charge at the end of the compression stroke. A second pump may draw air from the atmosphere and add its charge to that from the pump g; the two pumps and a fuel pump hare worked together either from the crank shaft or pneumatically by the pressure within the cylinder. The air and the fuel pipe lines may include heater coils e. A spring or dashpot i may be interposed between the air and fuel pumps pistons to give varying movements of these with respect to each other. In multi-cylinder engines each cylinder may have its own auxiliary pump g ; or a pump may draw from one cylinder and deliver to another. In another arrangement for a four cylinder engine only two pumps are used each pump drawing from two cylinders and delivering to two. The fuel pumps may be similarly cross-connected.
Patent GB-263288-A (GB)
Title: Improvements in or relating to ball or like pulverising mills
IPC: B02C17/18
Filed: 1925-12-08
Abstract: 263,288. General Electric Co., Ltd., and Bullock, W. Dec. 8, 1925. Ball and like mills.-A ball or tube mill of the kind in which the pulverized material is discharged from the mill by a current of gaseous fluid is so constructed that the velocity of flow of the fluid over those parts of the mill at which the fluid entrains the pulverized particles is substantially constant. The velocity of flow of the fluid may be reduced over the parts of the mill at which the fluid entrains the pulverized material. As shown blades 8 are arranged on the inside peripheral wall 11 of the pulverizing-chamber 1 so that they are spaced from each other and from the wall 11 to allow the fluid to flow at substantially uniform velocity between the blades and the wall to allow pulverized particles to pass between the blades and to be entrained by the fluid. The cylinder 1 rotates on hollow trunnions 2, 3 and is lined by discs 4, 5 spaced from the cylinder ends 6, 7. The blades 8 extend between the discs and may be parallel to the axis of the cylinder or inclined thereto. The blades are spaced from the wall 11 by means of fanges 26 and feet 27, the trailing edges 9 of the blades being thicker than and overlapping the leading edges 10. Material to be pulverized is fed by a hopper 14 and tapering, sleeve 12 in the trunnion 2 through a central opening 13 in the disc 4, and the fluid passes from a box 16 through the passage between the trunnion and sleeve to the space 18 between the end 6 and disc 4 on its way to the spaces 19 of uniform cross-section between the blades and the cylinder. The fluid with the entrained particles passes between the disc 5 and the cylinder end 7 and thence between the trunnion 3 and sleeve 20 to a separating-chamber. Insufficiently-pulverized material falls into a sump 22 at the end of the trunnion 3 and is returned to the cylinder through the sleeve 20 by means of a rotary scoop 23 arranged on the end of the sleeve. Part or all of the fluid may be fed into the mill through the sleeve 12 with the material to be pulverized and flow through the gaps between the blade edges 9, 10, the cross-sectional area of the spaces 19 then increasing progressively from the disc 4 to the disc 5.
Patent GB-714136-A (GB)
Title: Wideband waveguide rotating joint
IPC: H01P1/06
Filed: 1952-12-08
Abstract: 714,136. Waveguides. BENDIX AVIATION CORPORATION. Dec. 8, 1952 [Dec. 12, 1951], No. 31101/52. Class 40 (8) A right angle junction between a rectangular waveguide 12 and a circular waveguide 14 comprises a cylidrical ring 21, forming a continuation of guide 14 and having an aperture which receives the end of guide 12, a thin ring 22, contiguous with ring 21, extending in contact with the inner surface of guide 14, and a conducting annulus 23 being supported concentrically with respect to the rings by insulators 24. The ring 21 has an outer diameter equal to that of guide 14 but a smaller inner diameter. Two right angle junctions can be used together, with relatively rotatable connecting flanges 15 and 18, to form a rotatable transmission joint. Specification 714,135, [Group XL(c)], is referred to.
Patent GB-292018-A (GB)
Title: Improvements in and relating to thermometers
IPC: G01K5/64
Filed: 1927-11-19
Abstract: 292,018. Marks, E. C. R., (Pieroni & Cori). Nov. 19, 1927. Thermometers.-A metallic-expansion clinical thermometer made in the shape of a watch comprises a spindle d mounted between plates a, b and carrying a pointer e. A volute spring i is secured at one end to the spindle and at its other end to the casing. Secured to the spindle is a pulley h to which is attached one end of a hair, the other end of which is attached to a lever j pivoted at k and bearing at its upper end on the free end of a bimetallic strip m the lower end of which is bent round and secured to the plate b. The spindle d also carries a wheel g with inclined teeth normally engaged by a detent at the end of a resilient arm p so as to fix the pointer at its maximum reading. For resetting, the arm p can be displaced to disengage the detent by means of an arm r operated by a button s. An arm t is arranged to bear on the lower end of the strip m the pressure being regulated by a screw from outside the casing.
Patent GB-1471579-A (GB)
Title: Electrostatic printing devices
IPC: G03G15/24
Filed: 1974-07-15
Abstract: 1471579 Selective printing SIEMENS AG 15 July 1974 [30 July 1973] 31204/74 Heading B6F Electrostatic printer has at least one selectively energizable electrode EL located in insulating block SK, charged toner particles are applied via nozzle DU adjacent the electrodes EL which when energized attract the particles to the paper P. The paper may pass over a conducting base LU or have a conductive metal backing layer surplus toner is removed by suction device AS. The toner may be carried by an insulating fluid and the paper treated to prevent absorption of this fluid.
Patent GB-534768-A (GB)
Title: Improvements in and relating to magnetically operated devices
IPC: H01H50/64
Filed: 1939-12-01
Abstract: 534,768. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 1, 1939, No. 31268. Convention date, Dec. 1, 1938. [Class 38 (v)] In an electromagnetic switch the movable contact is mounted on a carriage 44 which slides with limited tilting motion on a post 42 and has springs 45, 46 below and above it, the spring 46 being engaged by the pivoted armature 35. The armature 36 is pivoted to the magnetic frame at 36 being held against longitudinal movement by a bent-over spring 41 and by co-operating lugs and shoulders on the armature and frame. An adjustable number of washers 47 are placed between the armature and spring 46. The movable contacts (not shown) on the member 44 are displaced from the axis of the post 42 so that when they engage fixed contacts, arranged on either side of them, the member 44 tilts and causes the contacts to wipe over each other. To provide a more uniform pull on the armatures 35 of an A.C. electromagnetic switch, the core 16 of the magnet has two short-circuited windings, one embracing the top portion of the slotted hole face and passing through the slot 30, the other of higher resistance embracing the top two sections of the pole face and the first winding and passing through the slot 31. The lower sections of the core face is left "unshaded" and the result is to provide a three-phase flux.
Patent GB-507663-A (GB)
Title: Arrangement for overload protection of electric supply networks
IPC: H02H9/02
Filed: 1937-11-15
Abstract: 507,663. Protective arrangements. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, and OFVERHOLM, H. Nov. 15, 1937, No. 31375. [Class 38 (iv)] In order to prevent heavy short-circuit currents on a section of an alternating current supply network the saturating windings of a saturable choke are supplied with direct current which is controlled by static valve means so as to be a continuous function of the voltage or impedance of the section and so as to be reduced to increase the impedance of the choke under short-circuit conditions. In Fig. 1 the choke winding 3 of a saturable inductor 1 is connected in series with one of the lines connecting a network section I to a power system II. The saturating winding 2 of the inductor is excited through a grid-controlled ionic valve 6 from a transformer 7 connected to the system II. Control potentials supplied to grids 9 and 10 of valve 6 are phase-controlled by a circuit 11 which is fed by a potential transformer 13 and a current transformer 12. The saturating current is arranged to be a continuous function of the impedance of section I so that when the latter quantity is reduced to a critical value the voltage and current of the section are suddenly reduced. In a modification, Fig. 2 (not shown), the choke has two saturating windings fed from separate metal rectifiers. One rectifier is supplied at section voltage and the other at system voltage. A regulating resistance in series with the former permits control of the critical impedance while a similar regulator in series with the latter permits control of the short circuit current. The invention. is also applied to a three-phase system. The saturable inductors comprise two similar cores each having one alternating current winding and one direct current winding and the connections between them are such that the voltages induced in the direct current circuit by the alternating current cancel out.
Patent GB-1082292-A (GB)
Title: Improved receptacle for documents
IPC: A47B63/02
Filed: 1964-08-04
Abstract: 1,082,292. Cabinets. B. RIETH. Aug. 4, 1964 [Aug. 2, 1963], No. 31376/64. Heading A4B. A cabinet for receiving documents comprises a plurality of similar stackable frame parts 1 forming a frame to receive sliding drawers 12, each frame part 1 being of U-section and comprising a corrugated base 2 and sides 3, 4 provided with longitudinal slots 5, 6 in their undersides and which taper from their bases 3a, 4a to their upper edges 3b, 4b, the latter being received in slots 5, 6 in a superposed frame part 1. The drawers 12 comprise a base (13) with sliding strips 17, 18, side walls 10, 11, rear wall 14, and inclined front part wall 15. The drawers are shallower than the frame sides 3, 4 and slide on the crests of the base 2 corrugations. When removed from the frame the drawers are stackable one above the other with the sliding strips engaging within the drawer sides 10, 11, as at 23, 24 and with projections 19, 20 on the drawers engaged in recesses 22 (or 28) in the upper side edges (21). When stacked step-wise, with the projections 19, 20 in the recesses (28), the sliding strips engage recesses 26, 27 in the rear wall 14. Recesses 8, 9 for hand holding are provided in the frame walls 3, 4.
Patent GB-174465-A (GB)
Title: Improvements in or relating to window blinds, and in the attachment of same to rollers
IPC: E06B9/48
Filed: 1920-11-06
Abstract: 174,465. Meakins, H. E., (trading as Eldreds). Nov. 6, 1920. Roller-blinds, attaching to rollers.-In a window blind provided with a series of eyelets 3 along its edge 2, which is reinforced or doubled over, to accommodate tacks 4 for fixing the blind to the roller, the eyelets are of a readily detachable character and comprise a ring-shaped central portion 6 having two bendable portions 7.
Patent GB-715458-A (GB)
Title: Improvements in or relating to plungers for use in operations such as washing clothing
IPC: D06F5/02
Filed: 1952-12-11
Abstract: 715,458. Washing-plungers. BAUMANN. L. Dec. 11, 1952 [Dec. 17, 1951; Feb. 4. 1952], No. 31399/52. Class 138 (2) A plunger for washing clothes comprising downwardly open bells 10, 11 arranged for relative axial movement and attached to spring- loaded telescopically arranged elements 12, 13 which form an air pump and of which the lower surrounds the upper, the bells fitting one inside the other when pushed together is characterized in that the upper element 13 is a cylinder open at the bottom and the lower element 12 is an open-topped cylinder, a spring 14 which loads the elements 12, 13 is arranged in the interior thereof, and when the plunger is pushed down into the clothes and the bells move towards each other, air is forced to pass through holes or passages such that the air can escape only through the space between the bells and/or through downwardly-directed edge holes provided in the bells. In Fig. 4 both bells 10, 11 are double walled and provided with openings 16, 17 in their lower edges. Rings of holes 15, 18 and 24 admit air from inside the telescopic elements 12, 13 to the spaces between the double walls of the bells. In Fig. 1 (not shown) both bells are single-walled. In Fig. 2 (not shown) the upper bell is double-walled and the lower bell single, while in Fig. 3 (not shown) the upper bell is single-walled and the lower one double. In Fig. 5 a rubber membrane 19 is secured to the lower bell 11, and provided with a reinforced edge 20 which, during upward motion of the lower bell seats in a groove 21 in the lower edge of the upper bell 10. Rubber flap valves (not shown) may be provided to admit fresh air to the interior of the parts 12, 13 when the plunger is raised, and means may also be provided to permit any water which enters to escape therefrom.
Patent GB-429477-A (GB)
Title: Improvements in perambulators, invalids' chairs, tradesmen's carriers and the like
IPC: B62B9/18
Filed: 1934-11-02
Abstract: 429,477. Steering perambulators, tradesman's carriers, &c. FUREY, J. D., 109, Lower Baggot Street, Dublin. Nov. 2, 1934, No. 31482. [Class 79 (v)] In a perambulator, invalid carriage, or tradesmen's carrier of the type wherein the front wheel a is mounted on one arm j of a bell-crank lever, the other arms l of which are interconnected by a track-rod m operated by the usual handle for steering, the handle or handles is or are rigidly connected to a member which is supported by the chassis so as to be rotatable in a horizontal plane and is connected to the track-rod. In the construction shown, the lower ends q, q<1> of the handles are fixed to a turntable disc f rotatable in a ring g fixed to a chassis member e, the turntable being connected to one of the arms l by a link p and a lever o pivoted at n on the plate e. The lever o engages a recess i in the turntable so as to be rotated thereby. The turntable may rotate on a stationary pin or may be fixed to a central rotatable pin. The plate e is supported on the rear axle b and is secured to the usual springs c.
Patent GB-512376-A (GB)
Title: Improvements in and relating to sheet fasteners for mattresses
IPC: A47C31/02
Filed: 1938-11-01
Abstract: 512,376. Fasteners for mattresses and sheets. SNYDER, E. M. Nov. 1, 1938, No. 31571. [Class 89 (ii)] For securing folded over parts of sheets to mattresses at the corners of the underside, a plate 7 is employed with upstanding pins 8, 9 which may be rigid or hinged. The side 3 and end 4 of the sheet are inturned as shown beneath the corresponding sides and ends of the mattress 1 and the pieces of the spiked plate pass deeply into the mattress stuffing.
Patent GB-335402-A (GB)
Title: Improvements in devices for cleaning motor vehicles
IPC: B60S1/66
Filed: 1929-10-17
Abstract: 335,402. Richter, A. Oct. 17, 1929. No Patent granted (Sealing fee not paid). Direct air and gas apparatus, non-automatic; valves for liquids, arrangement of. -An oil-spraying device for cleaning motor vehicles, which may be operated from the compression in one of the cylinders of an automobile, comprises an oil reservoir d with an inner tube c connected at f to the compressed air supply pipe g and with an oil delivery pipe attached to the nozzle k. The oil pipe has two branches s, t terminating in bottleshaped ends having ball valves w and apertures v. A spring- loaded valve o allows the air to enter the oil reservoir. The arrangement is such that whichever branch of the oil pipe is positioned downwardly will supply the oil to the nozzle.