baber/WOPTO huggingface dataset:
Patent GB-785162-A (GB)
Title: Improvements in or relating to overspeed protective devices for electric generators
Inventor: PERKINS JR HARLEY A
IPC: H02P9/02
Filed: 1955-11-18
Abstract: 785,162. Protective arrangements for generators. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 18, 1955 [Nov. 26, 1954], No. 33058/55. Class 38 (4). An overspeed protection arrangement for a generator driven by a prime mover has loadsensing means so arranged that if the load falls to a certain value a timing operation of a timing means is initiated and should the load fall further to another predetermined value before the timing operation has been completed the fuel input to the prime mover is reduced, thereby decreasing its speed. A load-sensing means comprises a current transformer 44 and a resistor 46, the output of this circuit being fed to two saturable transformers 76, 104. If the load on the generator 12 falls to, say 50 per cent, of its normal full load value, the voltage applied to the primary winding 78 of the transformer 76 is insufficient to saturate it and in consequence a relay 50 drops out, thereby making contacts 56, 58 to energize a time delay relay 60. Energization of this relay initiates the timing operation at the end of which operation contacts 66, 68 are opened. If, however, before the timing operation is completed, the load falls still further, to say 10 per cent of its normal full load value, transformer 104 desaturates, thereby dropping out relay 40 to make contacts 100, 102. Relay 116 now becomes energized (over the as yet unopened contacts 66, 68), thus completing an energizing circuit for a relay 38 which operates a valve V to reduce the fuel input to the prime mover 24, thereby reducing its speed. Energization of the relay 116 also causes a time delay relay 42 to be energized so that another timing operation is initiated to ensure that once the relay 38 has been energized it will remain energized for a preset time. When full load is restored to the generator relays 40, 50, pick-up and the circuit reset itself. Saturable transformers 76, 104 are provided to reduce the range of voltage applied to the relays 40, 50 and thus their size. Saturable reactor 84 is provided to ensure a rapid decrease in the output of the transformer 76 when it desaturates. Resistor 82 limits the current in the transformer 76 when it is saturated.
Patent GB-412246-A (GB)
Title: Improvements in electric motor starters
IPC: H02P1/32
Filed: 1932-11-23
Abstract: 412,246. Controllers. COX, F. B., 65, Fleet Street, Liverpool. Nov. 23, 1932, No. 33076. [Class 38 (iii).] A star-delta or auto-transformer starter comprises a three-pole two-way two-armed switch H, and a three-pole oil immersed circuitbreaker J, the insulated moving contact o<1> of one arm of the switch H and o of the circuitbreaker in each phase being connected together and to a terminal P<1> above the oil, and the insulated moving contacts o<2> on the other arm of the change-over switch being connected together. Rotation of a handle b<1> in an anticlockwise direction from the position shown in Fig. 9 causes a link c' at the handle side of the casing to move the switch H from the position shown in Fig. 9 to the start position in which the contacts o<2> engage the fixed contacts P<3>, and a link e<2> at the side of the casing remote from the handle to close the circuit-breaker J and lift an armature E, Fig. 9<a> to its attracted position in relation to a no-volt magnet F. The armature E is retained in this position by a catch K and is, therefore, not controlled by the magnet F until the handle is returned nearly to its initial position in which a cam D releases the catch K. Return of the handle releases a latch L by means of a cam C and the changeover switch H previously held by the latch L and a member h<2> in the start position, is returned by a spring to the " run " position shown in Fig. 9. An overload coil R and the no-volt magnet F release under overload or novolt conditions the armature E which drops and opens the circuit-breaker J with a percussive action due to the slot e<4> in the link e2. Specification 371,856 is referred to.
Patent GB-1350714-A (GB)
Title: Sheet feeding mechanism for printing press
IPC: B65H5/10
Filed: 1972-07-14
Abstract: 1350714 Feeding sheets HEIDELBERGER DRUCKMASCHINEN AG 14 July 1972 [23 July 1971] 33103/72 Heading B8R Grippers 3, Fig. 1, pick up sheets separated from a pile 2 and convey them over a feed cable 10 to front lays 15 where they are secured by grippers 47 of a printing-machine. The grippers 3 project through slots in the table and are supported on a lever 22 which is rocked by a crank wheel 42 through a link 41. The axis of rotation 23, Fig. 6, of the lever 22 is itself oscillated about an axis 29 by a cam disc 37 so that the grippers follow a path 62, 66, 67, returning below the table. The grippers are opened and closed by cam surfaces on a lever 11 rocked by a cam 17.
Patent GB-609740-A (GB)
Title: Improvements in or relating to a rotary sealing assembly
IPC: F16J15/38
Filed: 1945-12-07
Abstract: 609,740. Stuffing-box substitutes. GILBERT, W. Dec. 7, 1945, No. 33129. [Class 122 (v)] [Also in Group XXXII] A seal for a rotary shaft &c. extending through an opening in a housing 1 comprises an annulus 9 of unctuous material surrounding the shaft 3 and having a sealing engagement with an abutment surface 8 on the housing against which it is pressed by a resilient sleeve 15 adapted to expand radially when pressed by a sealing force, e.g. a spring 26. The sleeve has a circumferential groove 19 providing two Ranges which are pressed towards one another by the sealing force, one engaging a frustoconical inner surface of the annulus 9 and the other a similar surface on a backing member 21 having a boss 24 about which the spring 26 is disposed. The sealing face of the annulus 9 comprises an inner part normal to the shaft 3 and an outer one of shghtty tapered formation. As shown, the annulus 9 rotates with the sleeve 15, but it may be rectangular in section and cemented to a packing ring itself cemented to the housing, the sleeve 15 pressing a sealing abutment ring against it. In another form, the seal is disposed in a recess closed by a diaphragm having an annular rib engaging the annulus 9 which rotates. In Fig. 5, a housing 55 encloses tightly a sleeve 56 and the hub 59 thereof provides an external sealing surface 58 against which a spring 26 acting through a backing plate 61 and resilient sleeve 60 presses on unctuous annulus 9. If the seal is disposed within the housing, an inner abutment for the spring may take the form of an oil-throwing flange. The seal may be detachable as a unit. A cup-shaped member 81, Fig. 8, having at one end an inturned flange 83 and at the other a sealing plate 101, houses a double seal in which a spring 98 acting through backing plates 94 and resilient sleeves 87 presses sealing rings 85 against stationary unctuous rings 48, the sleeves gripping the rotary shaft tightly. A single resilient sleeve having the spring 98 engaging its flanges may replace the two sleeves 95.
Patent GB-1443456-A (GB)
IPC: A47G27/04
Filed: 1973-07-12
Abstract: 1443456 Carpet fasteners L R SUTTON C P RANNO and K HEWSON 12 July 1973 [13 July 1972] 33177/73 Heading A4S A carpet fastener comprises an elongate member 24 having inclined projections 36 and similarly inclined walls 40, 42 whereby the fastener can be easily withdrawn from a die in which it has been formed. Apertures 30 in the member 24 also have inclined walls. The fastener is preferably formed by injection moulding of plastics material such as polystyrene, polyethylene, polyester, polyether, polyureas and polyurethane. The apertures permit the member 24 to be easily broken to a convenient length, and it is secured to a floor by nails or an adhesive.
Patent GB-333819-A (GB)
Title: Improvements in or relating to picture telegraph and the like apparatus
IPC: H04N5/30
Filed: 1929-10-31
Abstract: 333,819. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Ranger, R. H.). Oct. 31, 1928, [Convention date]. Copying-telegraphs.-Means are provided in a transmitter for utilising substantially the full amount of light from the light-source, a chopping action being introduced by shifting the beam of modulated light from the picture, from one photoelectric element to another. In one modification a tuning-fork 1, Fig. 1, energized by a source 7 and windings 3, 5, carries a wedgeshaped body 9, with reflecting surfaces 11, 13. Light from a source 21 is focussed by a lens 23, on the picture 19, and the light from the picture is focussed by lens 25 on to the intersection 15 of the reflecting surfaces 11, 13. Energization of the tuning-fork alternately directs the light through lens 27 to photoelectric element 29, and through lens 31 to element 33. The signals from the photoelectric elements 29, 33 are amplified by valves 43 and 45 respectively and applied in push-pull to valves 63, 65 for further amplification. In other modifications (Figs. 2, 3, not shown), a rotating disc carries prisms or mirrors which periodically divert the light beam from the picture, from one photoelectric element to another. For multiplex operation there may be a plurality of channels and a. plurality of tuning-forks or other suitable vibrators preferably of different frequency and all controlled from a single master oscillator.
Patent GB-486531-A (GB)
Title: Loom dobby mechanism
IPC: D03C1/10
Filed: 1936-12-04
Abstract: 486,531. Loom dobbies. WEBSTER, J. Dec. 4, 1936, No. 33264. [Class 142 (i)] In a loom for weaving a single fabric or two superposed fabrics connected or not at intervals each heald shaft 9 is connected by two cables 10a, 10b and levers 12, 13 to two opposed levers, e.g. 14a, 15a, on a common shaft 16, each of the levers 14, 15 having a hook 18, 19 which can be raised to engage a fixed griffe 21 or 22, lowered to engage a moving griffe 23 or 24, or held in an intermediate free position by a peg drum 54 or other pattern device. The griffes 23, 24, also the roller griffes 45, are reciprocated in opposite directions by the T-lever 36. After every shedding the levers 14, 15 are brought to the vertical position by the griffes 45 and consequently all the sets of warps to the centre shed position. The hooks 18, 19 corresponding to any warp which remains in the centre-shed position engage the fixed griffes 21, 22. When weaving two separate fabrics the levers 14, 15 corresponding to two sets of warps move only from the vertical position to the position 14a, 15a, and those corresponding to the other two sets of warps from the vertical position to the position 14d, 15d. When weaving a single fabric some or all of the warps cross the centre shed position and the corresponding levers 14, 15 move to both sides of the vertical.
Patent GB-789839-A (GB)
Title: Improvements in or relating to dynamo-electric machine
IPC: H02K9/24
Filed: 1955-11-21
Abstract: 789,839. Flame arresters. HOOVER, V. A. Nov. 21, 1955, No. 33306/55. Class 47 [Also in Group XXXV] A machine to operate in an explosive atmosphere has air or other fluid drawn through it by a fan at the end remote from the air inlet, this fan being so shrouded as to flow the air over the major part of the exterior of the machine and flame arresters are provided near the fluid inlets and outlets. As shown, air enters the machine at 22, traverses the flame arrester 26 passes through the air gap, stator ducts 41 and ducts 74 to the second arrester disposed  at the inlet of one set of blades on the fan 18 which has a shroud 20 to guide the air over the machine exterior, the fan having additional blades to draw in cool air at apertures 21. Each arrester consists of rings 104a and spacing washers 106s (Fig. 2).
Patent GB-494544-A (GB)
Title: Improvements in film feeding mechanisms for photographic cameras
IPC: G03B19/04
Filed: 1937-12-02
Abstract: 494,544. Photographic roll - film cameras. VALSTS ELEKTROTECHNISKA FABRICA. Dec. 2, 1937, No. 33397. Convention date, Dec. 21, 1936. [Class 98 (i)] The film in a camera is fed forward by constant amounts by means of a manually operated reciprocating member which coacts with a projection on a plate attached to the film feed roller, the projection being positioned in accordance with the amount of film already wound on. As shown, the reciprocating rack 1 engages an arm 13 on the toothed plate 2, which plate is connected to the hub 4 of the film roller. The connection is a unidirectional one and consists of a coupling member 3 and two coil springs 5, 6, the end surface of the member 3 having teeth 3a which engage corresponding teeth on the hub 4. A stop 17 formed on the end of a lever 10 is held in the path of a projection 12 on the plate 2, its position being determined by a helical cam on a graduated toothed disc 8 indicating the number of pictures exposed. When the plate 2 returns under the action of a spring 11 after a film feed operation, the position in which it is held depends upon the position of the projection 17. This modifies the following feed stroke and compensates for the increased diameter of the film roll 15. A spring plate 14 on the rack 1 acts on the teeth of the disc 8 to move the counter forward one tooth for each feeding stroke.
Patent GB-427533-A (GB)
Title: Improvements in and relating to variable speed transmission
IPC: F16H61/02
Filed: 1933-08-18
Abstract: 427,533. Variable-speed gearing. REO MOTOR CAR CO., 1331, South Washington Avenue, Lansing, Michigan, U.S.A. Aug. 18, 1933, No. 33412/34. Convention date, Oct. 17, 1932. Divided out of 427,470. [Class 80 (ii)] The description and drawings are identical with those of Specification 427,470, but the invention claimed is transmission mechanism comprising in combination a driving-member A, a driven member A<1>, an intermediate member A<2>, reversing-mechanism X between the members A, A<2>, a shifter S for operating the reversing-mechanism, planetary gearing B, C, D between the members A<2>, A<1> including a planetary gear carrier J, G, a oneway brake O for preventing the carrier from turning backwards during forward driving of the gearing X, an annular toothed flange K projecting from the carrier and a dog R operated by the movement of the shifter S into reverse driving position of the gearing X for engaging the flange K to hold the carrier J, G against rotation in the direction permitted by the one-way brake O. The carrier J, G is always an abutment member while the planetary gearing is operative with a solid-driving plate clutch M disengaged. While the one-way brake 0 prevents the carrier from running backwards during forward driving in the gearing X, it would be useless during reversed driving in the gearing X. To this end, the dog R is provided, which becomes operative as the gearing X is shifted into reverse to prevent the carrier from turning in the direction which has become the rearward one with respect to the changed drive in the planetary gearing. The dog R prevents the carrier from turning in the opposite direction to that prevented by the one-way brake O. The dog R slides radially in a fixed guide Q<2> and has a shank R<1> which is pivoted at S<1> to the shifter S of the reversing train. The gearing X may be the two-speed and reversing gearing operated by segment and rack selector mechanism V<1> described in Specification 427,471.
Patent GB-893292-A (GB)
Title: Improvements relating to frames, especially window frames, door frames and the like
IPC: E06B3/20
Filed: 1958-10-20
Abstract: 893,292. Moulding reinforced frames. BEHRENS, J. Oct. 20, 1958 [Oct. 21, 1957; May 17, 1958], No. 33467/58. Class 87(2). [Also in Group X] A window door or like frame for structural purposes (see Group X) is made in one piece with an insert of low specific gravity surrounded by cast resin e.g. polyester resin, reinforced with glass fibre. In Fig. 2, a polyethylene hose 32 has a covering of preferably adhered, fibre glass 33 and is inflated before or after insertion into the mould constructed in two parts 30, 21. A second hose with a glass-fibre covering may be pulled over the hose 32. Polyester resin is then drawn into the mould. In Fig. 4 a foam plastic core 37 has an adherent glass-fibre covering 38. The core 37 may have encircling grooves to produce a bamboo-like structure. The hose or covering 32, 38 is produced by sewing together the edges of a single piece or of two or more strips 111, 112, Fig. 6, of the same or different widths, the seams and edges outside the seams constituting reinforcements for the frame edges. The hose may consist of a layer of coarse textured glass-fibre 118, Fig. 6, covered by an outer layer 119 of very fine textured glass-fibre. The moulds are constructed from longitudinal side members detachably secured to corner pieces of L-, T- or X-shape. Rubber gaskets 36, Fig. 4, are inserted between the parts 30, 31 of the mould to prevent leakage of resin.
Patent GB-466850-A (GB)
Title: Machines for sharpening the points of twist drills or the like
IPC: B24B3/24
Filed: 1935-12-03
Abstract: 466,850. Grinding twist drills. ARMAND, J. Dec. 3, 1935, No. S3474. Convention date, Dec. 5, 1934. [Class 60] Comprises a machine for grinding portions of the two end faces S, S<1>, Fig. 2, of a twist drill or the like to form two cutting-edges OA, OB, on the line AB produced at the " point " of the drill by the intersection of the end faces. The machine comprises a grinding-wheel 2, means such as a chuck 14 for holding the drill during grinding, a horizontally-movable diamond tool 7, for trueing the side face of the wheel, a verticallymovable diamond 10 for trueing the periphery, and adjustable stops 15, 16 for limiting the movements of the tools 7, 10 :respectively towards the wheel, the arrangement being such that the drill support 14 moves with the trueing tools and supports the drill so that the vertical plane containing the axis of the drill contains also the point of the diamond 7, whilst the horizontal plane through the centre of the drill point contains the point of the diamond 10. It is thus ensured that after each re-trueing of the wheel by the diamonds the edge of the wheel formed at the intersection of the peripheral and front faces will pass through the centre O of the drill-point. In the machine shown the trueing-tools 7, 10 are carried respectively by cross-slides 4, 5 mounted on a vertical slide 3 and the drillchuck 14 is carried on the upper slide 4. The wheel is trued on the face by horizontal movement of the slide 4, the depth of cut being determined by the setting of the adjustable stop 15, and is trued on the periphery by movement of the slide 5, the stop 16 determining the depth of cut. The slides 4, 5 are then moved to allow the drill to be inserted in the chuck 14, a V-gauge 18 carried on a pivoted arm 19 determining the location of the drill point with its centre O in the correct relation to the trueing-tools above referred to and with the line AB vertical or slightly inclined. The table 5 is then returned to the position determined by the stop 15 and the drill ground on one side of the centre by movement of the slide 4. The other side is ground after the drill has been rotated on its axis through 180‹.
Patent GB-862313-A (GB)
Title: Improvements in or relating to rakes
IPC: A01D7/06
Filed: 1958-10-21
Abstract: 862,313. Garden rakes. HEWITT, A. A. Aug. 25, 1959 [Oct. 21, 1958], No. 33588/58. Class 6(2). A rake, particularly for clearing rubbish from lawns comprises a body portion 10 which is substantially L-shaped in cross-section, a socket 12 for a handle being secured to one arm 11 of the body portion and a tine-receiving member 15 to the other. The tine-receiving member comprises a plurality of channels, and the tines 17 may either be U-shaped, in which case the legs of each line are engaged in two adjacent channels, or alternatively a bunch of tines may be secured in each channel. The various parts of the rake may be of metal, held together by welding, or the body portion, socket 12 and channelled member 15 may be moulded from a synthetic resin as an integral unit.
Patent GB-429680-A (GB)
Title: Improvements relating to tubulous steam generators
IPC: F22B29/06
Filed: 1933-11-30
Abstract: 429,680. Instantaneous steam generators. SIEMENS - SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Nov. 30, 1933, No. 33641. Convention date, Nov. 30, 1932. Addition to 429,672. Drawings to Specification. [Class 123 (ii)] In a forced-flow boiler operating with variable pressure in accordance with load fluctuations as described in the parent Specification, the final superheating temperature is maintained constant and the superheater is arranged partly in the radiant heat zone and partly in the convection heat zone of the furnace in order, as described in Specification 420,759, that the heat absorption of the superheater may be independent of the load. The firing of the boiler is controlled by a regulator operated in accordance with the temperature at a point in front of the superheater, the regulator being adjusted in response to variations of pressure at that point. The regulator may also be adjusted in accordance with the variations in the temperature of the feedwater.
Patent GB-922981-A (GB)
Title: Record changers cut-out device
Inventor: LAUFER HELMUT
IPC: G11B17/00
Filed: 1961-09-21
Abstract: 922,981. Automatic gramophones; motor switches. O. STEIDINGER, and S. STEIDINGER, [trading as STEIDINGER GEB. [Firm of]]. Sept. 21, 1961 [Oct. 31, 1960], No. 33767/61. Class 40 (2). The closure of a motor switch in a record changer is provided by two actuating levers, one being operated by the changing mechanism and the other by pick-up arm-moving mechanism of a type which prevents the inward swinging of the arm after the last record of a stack has been lowered such that the circuit is always closed when either the pick-up is swung over the playing surface of a record or the automatic mechanism is in operation. In the embodiment described, a toggle switch 12 is biased to the " ON " position by either of two levers 13, 14 actuated by springs 16, 17, respectively, but when the automatic mechanism is not in operation and the pick-up arm 7 is in its rest position both levers are held back against the action of springs 16, 17 so that the switch contacts 19, 20 are open. When the pick-up arm 7 is moved inwardly lever 14 is released to close the switch, or when movement of the cycling cam disc 5 has been initiated, lever 13 is released to close the switch. U.S.A. Specification 2,707,639 is referred to.
Patent GB-992674-A (GB)
Title: Improvements relating to vehicle seats
IPC: A47C17/16
Filed: 1962-09-04
Abstract: 992,674. Seats. H. R. TURNER. Sept. 2, 1963 [Sept. 4, 1962], No. 33783/62. Heading A4J. A vehicle seat frame comprises a pair of links 13, 14 of substantially equal length, each pivoted to both the back-rest 16 and the seat 15 or to sub-frames 11, 10 associated with them, the links extending across one another to permit pivoting of the back-rest 16 relative to the seat 15. By swinging each link 13, 14 through 90 degrees the position of the back rest is reversed from the position shown in Fig. 1 to that shown in Fig. 4. The inclination of the back-rest may be adjusted to convert the seat into a reclining seat or into a bed. The links may be locked in any desired position by clamp members. The frames may be folded flat for stowing.
Patent GB-1475242-A (GB)
Title: Positive displacement internally-meshing rotary screw pump and drive coupling therefor
IPC: F04C2/107
Filed: 1975-08-13
Abstract: 1475242 Internally-meshing screw pumps C H ALLEN 13 Aug 1975 [5 Sept 1974] 33790/75 Heading F1F A flexible tubular member 50 inter-connects a drive-shaft 25 and the rotor 46 of an internallymeshing screw pump. As shown, the flexible tube 50 is integral with the end of rotor 46 nearest the drive means, the other end of tube 50, remote from drive means, being bonded or clamped to shaft 25. The pump assembly is described in use in a sewage reservoir A, a comminuting and grinding device 30 serving to break up the sewage before it is pumped through pump 40 to an outlet 43, 14. The drive means 19 has a shaft 23 connected to rotor drive-shaft 25 by a semi-elastomeric sleeve coupling 24.