baber/WOPTO huggingface dataset:
Patent GB-776646-A (GB)
Title: Improvements in or relating to overhead travelling hoists
IPC: B66C19/02
Filed: 1953-05-18
Abstract: 776,646. Overhead-travelling hoists on vehicles. SPARROW, W. D. J. Aug. 17, 1954 [May 18, 1953], No. 13805/53. Class 78 (4). The hoisting and traversing movements of an overhead travelling hoist on a vehicle are effected through cables by hydraulic rams 20, 21, 29 mounted longitudinally of the gantry. The hoist illustrated is carried by the platform 2, Fig. 1, of a lorry for carrying weights 50 for testing weighbridges. The gantry comprises a pair of inwardly-facing channel beams 5, 6, Fig. 2, supported by legs 3, 4 of inverted U shape. A carriage 9, Fig. 1, runs by means of rollers 8 on the flanges of the beams 5, 6 along which it is traversed by cables 40, 41 which pass from the carriage over pulleys 35, 34 at the ends of the gantry and are then reeved between pulleys 32, 33, Fig. 2, on the legs 3, 4 and pulleys 22 ... 25 carried by a crosshead 17 running by means of rollers 16 on tracks 14 above the gantry and moved by the pistonrods 18, 19 of a pair of hydraulic rams 20, 21. The hoisting rope 42, Fig. 1, passes from an anchorage 43 on the gantry over pulleys 11, 12 on the carriage 9 to form a bight supporting the load pulley 44. The hoisting rope then passes over pulleys 37, 38 on the gantry to be reeved between a pulley 39 on the leg 3 and pulleys 30, 31 on a crosshead 27 driven along tracks 15 above the gantry by an hydraulic ram 29. Valves controlling the rams and an accelerator pedal for controlling the engine of the lorry when it is driving the pump for providing pressure liquid for the rams are mounted adjacent the rear leg 4. The valves include a normally open valve 55, Fig. 4, which may be closed to build up a back pressure directed by a two-way valve 61 to operate either the ram 29 or one of the rams 20, 21 according to the positions of two inter-linked valves 67, 68. A screw-operated valve 63 controlling the exhaust from the ram 29 enables the load to be set down slowly. Piston-operated ports in the rams connect them to exhaust at the ends of their strokes or, alternatively, a member 66, Fig. 1, may, when depressed by the load block 45, vent the ram 29 to exhaust. Upwardly converging bars on the trolley 9 may limit the lateral swing- ing movements of the load block 45. The load block includes a transverse member 47, Fig. 1, carrying a series of hooks 48 which are biased to the load-engaging position of Fig. 1 by a counter-weight 51.
Patent GB-587585-A (GB)
Title: A centrifugal pump or engine
IPC: F04C19/00
Filed: 1944-07-19
Abstract: 587,585. Centrifugal pumps ; rotary engines. TRIGGS, W. W. (Nash Engineering Co.). July 19, 1944, No. 13835. [Classes 110 (i) and 110 (ii)] In a pump, or engine, of the liquid-ring type, the outer part of the ring bears on a lobe 21 which is rotatable through fluid friction, or positively driven by means such as a stub shaft 54. The space outside the lobe is maintained free from liquid by means of drains in the casing, to prevent hydraulic friction losses. A double rotor, Fig. 5, is axially balanced hydraulically and has a surge-preventing plate 84, in the parts, accommodated in slots in the rotor. In a modification, the surge plate forms part of the rotor and may have gear teeth on its periphery which drive internally-meshing teeth on the lobe. The rotor 22, Fig. 1, is secured by a shaft 25 which is supported in bearings 26, and the lobe shaft 27 is carried by bearings 28. Vanes 29, in the rotor, form pockets which co-operate with ports 32 in the cone member 24 leading to the usual inlet and outlet ports. When starting up, sealing liquid enters passages 36, 39 and is led inside the lobe through a passage 37 as described in Specification 379,891. Liquid for cooling and sealing, surrounds the shaft 25 and a seal 35 and is vented to the inlet chamber by way of an orifice 38. Leakage liquid is thrown off a lip 40 and passes to the pump inlet through a port 41. Liquid collecting in the outer casing 20 flows through a check valve 42. Liquid leaking into a space 43 passes through passages 44, 45 to the pump inlet. A drain 46 is provided between shaft seals. Hydraulic balancing passages 47 are provided across the lobe. Stiffening ribs for the casing and bearing supports, are provided. A lobe drive, embodying a flexible coupling, may be attached to the stub shaft 54. In Fig. 5, a built-up lobe 61 runs on non-metallic bearings 68, which may be made of " Bakelite " (Registered Trade Mark). Sealing means may be as described in Specification 458,058. The surge-preventing ring 84 may be made of Bakelite. Spaces 85 are provided to reduce the weight of the lobe. Fig. 13 shows another arrangement in which two revolving lobes 125, 126 are journalled on cylindrical portions 127, 128 of the port members, and are connected to each other by a central spider 129. Rotors 121, 122 are secured to a shaft 120. Adjusting wedges 131 are used for bearings 130 and to position the lobes in the casing. For an engine, motive fluid is admitted to the liquidpiston chambers, and exhausted later. Specification 324,249, [Class 110 (i)], and U.S.A. Specification 953,222 also are referred to.
Patent GB-809353-A (GB)
Title: Improvements in braking systems for vehicles
IPC: B60L7/28
Filed: 1957-05-01
Abstract: 809,353. Eddy current vehicle brakes. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. May 1, 1957 [May 30, 1956], No. 13867/57. Class 103 (1). In an eddy current braking system for vehicles, particularly railway trains, an exciter 5 carried on, and driven by one of the wheels of the first vehicle or locomotive, produces a voltage in opposition to a battery 4, their positive poles being connected together, the field coil 6 of the exciter 5 being energized from a rheostat 7 through a reversing switch 8 since the train may have to proceed in either direction. A push button switch 9, as shown, energizes a coil 21 on the next or any of the following vehicles, to maintain closed a valve 22 rendering the pneumatic brake system inoperative. When the switch 9 is changed to its alternative position a field coil 15 for a generator 16 on the trailer vehicle or vehicles is energized so that current is supplied to the winding 17 of a magnet which produces eddy currents in a brake disc 18 coupled to the vehicle shaft. During this action the valve 22 is held closed by energization of coil 21 instead of coil 20.
Patent GB-378856-A (GB)
Title: Improvements in or relating to glass forming machines
IPC: C03B9/18
Filed: 1931-05-11
Abstract: 378,856. Glass manufacture. WHITALL TATUM CO., Millville, New Jersey, U.S.A. May 11, 1931, No. 13877. Convention date, June 21, 1930. [Class 56.] Delivering molten metal; pressing. - A machine for forming glassware and a feeder for supplying it with charges of molten glass are provided with a common driving-mechanism, and means are provided for advancing or retarding the operation of one apparatus with respect to the other, and for driving the feeder while the forming-machine is idle. The forming-machine shown in the Figure is a press in which a number of moulding-units rotate about a central vertical axis as described in Specification 378,977, and charges of glass are delivered from the feeder into a shoot 58 which directs them into the moulds 57. The shoot is supported in a vertical pivot and is connected by a rod 68 to a lever arm 69 which, when the rotation of the forming-machine is stopped, swings the shoot to one side so that the charges of glass fall into a receptacle for cullet. The shearing-device of the feeder is driven by a vertical telescopic shaft 86 which is supported by a pedestal secured to the flow of the shop. An horizontal telescopic shaft 94 connects the shaft 86, through bevel gearing housed in a casing 92, with a differential gear housed in a casing 98, and the shaft permits the machine to be moved relatively to the feeder. A handwheel 421 enables the bevel wheels of the differential gear to be rotated 'so that the timing of the feeder can be adjusted in relation to the operation of the forming-machine. The machine is rotated by an electric motor E, and a number of control switches and signal lamps are placed at convenient points around the machine. A brake is applied automatically when the current is cut off from the motor. The driving-mechanism embodies a change-speed gear which, when the machine is started, rotates it at a slow speed and, after a predetermined period at the slow speed, automatically changes and drives the machine at the normal. working speed. Thua, when starting from rest, the inertia of the moving parts is overcome gradually. The gear changes automatically to the slow-speed ratio each time the driving-motor stops. A clutch connects the machine drive to the main driving-shaft, and the clutch is disconnected when the machine is stopped for adjustment so that the feeder continues to be driven by the motor. The clutch has only one tooth and when it is closed again, the machine and the feeder take up their proper relative timing. Safety switches are provided for stopping the motor in the event of the piers, heads, moulds, &c., becoming jammed or failing to occupy their proper position.
Patent GB-570155-A (GB)
Title: Improvements in or relating to garden shears or the like
IPC: A01G3/047
Filed: 1943-08-26
Abstract: 570,155. Garden shears. McCONNELL, N. F. Aug. 26,1943, No. 13918. [Class 61 (i)] Garden shears &c. are provided with extensible handles in the form of outer sleeves 4 telescopically mounted on the inner-sleeves 3 and retained in closed or extended position by means of a spring-pressed projection 8 adapted to engage apertures 10, 11 or secured in any position by a clamp screw &c.
Patent GB-801904-A (GB)
Title: Improvements in and relating to multi-channel transducer head assemblies
IPC: G11B5/29
Filed: 1956-05-04
Abstract: 801,904. Magnetic recording and reproducing heads. AMPEX CORPORATION. May 4, 1956 [May 31, 1955], No. 13934/56. Class 40 (2), A multi-channel magnetic transducer assem. bly comprises a pair of rigid mounting members 13 having two flat parallel shoulder surfaces extending over their length to each of which are attached a plurality of parallel spaced magnetic U-shaped core parts 21 having end faces 26, 27 in a common plane, the faces of the core parts 21 supported by one mounting member 13 being aligned in opposition to the core parts 21 supported by the other mounting member 13, a thin non-magnetic shim clamped between the front end faces 27, electrostatic and electromagnetic shields 36 disposed between the' separate core pairs, and insulating means filling the spaces to hold the core parts and mounting members to form a unitary assembly, Fig. 12.
Patent GB-1468481-A (GB)
Title: Continuous mixers
IPC: B29C48/41
Filed: 1975-04-04
Abstract: 1468481 Mixing apparatus C C VALERI 4 April 1975 [5 April 1974] 13997/75 Heading B1C A continuous mixer comprises two rotors 9 rotatable at equal velocities and in opposite directions in a mixing chamber 12 which has feed and discharge orifices, the mixing chamber being divided into a feed zone 15 and a mixing zone 16, wherein the two rotors are each provided in the feed zone with a two start screw spindle 20 each spindle being rotatable in a separate cylindrical chamber. and in the mixing zone with two mixer blades 11 which are disposed diametrically opposite one another on the rotor each of which mixer blades has a continuous profile and extends over substantially the whole length of the mixing zone. Each blade 11 has four zones in two 21, 23 of which the blade extends parallel to the rotor axis and in the other two 22, 24 of which the blade extends helically and is arranged to feed material to the centre of the mixing zone 16. The rotors are so shaped that the trailing side 28 of each blade 11 is of greater convexity than the leading side 25 so as to maintain a constant distance between the two rotors.
Patent GB-639971-A (GB)
Title: Improvements in filing cabinets
IPC: A47B87/02
Filed: 1948-05-24
Abstract: 639,971. Sectional cabinets. BROWN, F. C. May 24, 1948, No. 14003. [Class 52 (i)] Cabinet units 9 are coupled in rows or tiers by peripheral frames 15 provided with tongues or like means engaging slots 13, 14 in the walls of the units to be coupled. Additional tongues 18 are provided which rest on the tops of the units to position the frames.
Patent GB-819038-A (GB)
Title: High voltage winding for transformers with voltage control
IPC: H01F27/34
Filed: 1956-05-07
Abstract: 819,038. Transformers. BROWN, BOVERI & CIE A.G. May 7, 1956 [May 7, 1955], No. 14130/56. Class 38 (2). The high-voltage winding of a transformer cornprises disc coils wherein the winding turns themselves are wound in such a manner as to effectively control the capacitive conditions so that on application of a voltage impulse the voltage distribution along the winding is linearized. Each coil comprises a part such as 19 which is single-wound and a part such as 20 which is double-wound (the effect of the double winding being that the " A.C." voltage between adjacent turns in the double-wound part is several times that in single-wound part), the number of turns in the single-wound part increasing on progression through the disc coils from the high-voltage end of the winding and the number of turns of the double-wound part decreasing correspondingly. As shown the disc coils are arranged in pairs, the pair 14, 15 having three single-wound turns and eleven double-wound turns, the next pair 16, 17 having five single-wound turns and nine double-wound turns, this progression continuing through disc coils which are not shown. Other variations in the numbers and arrangements of single and double wound turns in each disc or pair of discs are described.
Patent GB-1486700-A (GB)
Title: Ultrasonic delay line of nondispersive mode type
IPC: H03H9/36
Filed: 1975-04-07
Abstract: 1486700 Delay lines MITSUMI ELECTRIC CO Ltd 7 April 1975 [10 April 1974] 14207/75 Heading H3U A non-dispersive ultrasonic delay line comprises a propagation medium having parallel major surfaces, which define a perpendicular A-A, and at least one end face which is inclined at an angle # to the direction A-A, and a transducer mounted on said end face and having its principal surfaces parallel to the end face and a pair of side surfaces which lie respectively in the planes of the major surfaces of the propagation medium. Suppression of echo signals and signals due to modes higher than n=0 is thereby achieved. As shown in Fig. 1B both end surfaces 13a, 13b may be inclined to the major surfaces 14a, 14b. Alternatively the other end surface may be perpendicular to the major surfaces (Fig. 4, not shown) in which case the transducer both transmits and receives the signals. The angle # is preferably selected to be less than that at which spurious signals due to the n = 1 mode become a maximum. The invention may be applied to a multireflection type delay line, Fig. 5A; signals from inclined transducer 62a propagate via side surfaces 65a-65d, of which surface 65c may be slightly arcuate, to inclined transducer 62b. Portions of the major surfaces outside the propagation path are covered with attenuation material 67, e.g. silicone rubber. A method of manufacturing such a delay line from a glass block is described in connection with Fig. 6 (not shown).
Patent GB-1176251-A (GB)
Title: Hoisting Apparatus for Transport Vehicles
IPC: B66C13/18
Filed: 1967-03-29
Abstract: 1,176,251. Vehicle with load lifting apparatus. PARATOR A.B. 29 March, 1967 [13 April, 1966], No. 14212/67. Heading B8E. [Also in Division B2] A vehicle has a lever arm lifting apparatus comprising a main cylinder 16 and a breaking cylinder 22, pivotally mounted on the vehicle chassis 14, supporting load carrier means 30 on a yoke 34. A supporting cylinder 20 is pivoted on a link 18 on the main cylinder and is connected by link arms 26 to the chassis. A supporting foot 24 is connected to the cylinder 20 and to the links 26. Balance cylinders 40, 44 control the movement of the lifting arms and allow the back plugs of the carriers 30 to be manoeuvred into corner boxes on a container 32 in which they are locked by twisting them by a further cylinder. The foot 24 engages the ground or platform from which the container is being lifted to steady the vehicle, during lifting. When loaded on to the carrier vehicle the cylinders are locked to hold the carriers in position on the container during transport. The arms may be moved lengthwise of the vehicle to adjust the different container lengths. Supporting legs may be let down from the vehicle during container transfer.
Patent GB-238333-A (GB)
Title: Improvements in or relating to reproducing amplifiers for sound or like waves
IPC: H03F3/02
Filed: 1924-06-12
Abstract: 238,333. Case, T. W. June 12, 1924. Optical apparatus.-A light-sensitive device 5, preferably of the kind described in Specifications 133,403 and 133,404, [both in Class 40 (iii), Telegraphs, Electric], is included, together with a battery 4 in the input circuit of a thermionic amplifier for reproducing sound waves from a photographic record of light waves as varied by sound waves. The circuit is characterized by the provision of a potentiometer 10 and a resistance 11 in shunt across the grid-filament circuit. A choke coil may be inserted in place of the resistance 11, or in series with it.
Patent GB-507966-A (GB)
Title: Improvements in opal luminescent glasses
IPC: C03C4/00
Filed: 1938-05-13
Abstract: 507,966. Glass manufacture. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) May ,13, 1938, No. 14321. [Class 56] An opal luminescent glass, suitable for the envelope of an electric discharge lamp, has most or all of its opalescence caused by the presence of undissolved crystalline luminescent material, such as zinc or cadmium silicate, or zincberyllium silicate. A suitable glass is composed of 57 per cent of SiO2, 10 per cent of Al2O3, 29À5 per cent of ZnO, 1À5 per cent of CaO, 1À5 per cent of BeO, and 0À5 per cent of MnO2. Part of the silica, say 2 per cent, may be replaced by alkalies. Opalescence develops when the. pre-formed transparent glass is subjected to heat treatment at 9000-1000‹ C.
Patent GB-1484820-A (GB)
Title: Apparatus for separating punched workpieces
IPC: B26D7/18
Filed: 1975-04-08
Abstract: 1484820 Severing sheet material by tearing STANZTECHNIK GmbH RODER & SPENGLER 8 April 1975 [21 June 1974 23 Jan 1975] 14392/75 Heading B4B An apparatus for separating punched workpieces from waste material surrounding the workpieces along cut lines interconnected by narrow lands, comprises a support table 2 for the workpiece 6 mounted on a frame 3, a carriage 5 slidably mounted above the table on guide rails 7, 8, and a vertically movable wedge tool 10 connected to a drive means 14 on the carriage and having a free end 11 adapted to be moved into the cut lines in order to break or tear the interconnecting lands. The tool 10 is secured to the piston-rod 16 of a pneumatic cylinder device 14, the piston-rod and tool being rotatable about the axis of the rod by means of handles 25 in order to facilitate aligning the tool end 11 with the cuts; the cylinder 14 is coupled to the carriage by slidable guide 9. The correct height of the end 11 of the tool above the workpieces is sensed by a material contact foot 32 connected to the piston-rod 30 of a pneumatic cylinder device 28; a limit switch 33 is mounted on the opposite end 31 of the rod for co-operation with an abutment member 34 movable with the piston-rod 16 of the cylinder 14. An abutment 17 on the rod 16 co-operates with limit switches 18, 20 fixed to the cylinder 14. To assist separation of the workpieces, a pressure bar 45, Figs. 2 and 6, is movable by a pneumatic cylinder 48 and linkage 44 to lift the workpieces as shown in Fig. 6. The material is clamped during separation by a bar 39 actuated by pneumatic rams 41. Several wedge tools may be adjustably mounted on a bar (78), Figs. 7 and 8 (not shown), which is connected to the piston-rod 16.
Patent GB-419418-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B1/00
Filed: 1934-05-14
Abstract: 419,418. Two- and four-stroke cycle engines. SILVESTRI, B., 28, Viale Monte Nero, Milan, Italy. May 14, 1934, No. 14495. [Class 7(ii).] Oppositely moving pistons 5, connected to the crank shaft 4 by outside linkages, compress air within the chamber 2. The valve 7 is opened permitting air to pass to a reservoir 14, and the valve 8 then opened permitting air from the reservoir, mixed with fuel from the device 15, to charge the combustion chamber 3. Ignition is effected by the plug 12 and the cylindrical valve 10 lifted allowing the products of combustion to expand into the air in chamber 2. As the pistons 5 uncover the exhaust ports 13, the inlet valve 11 opens recharging both chambers with air.
Patent GB-685116-A (GB)
Title: Improvements in or relating to apparatus of the kind in which a record medium in the form of a tape, strip or wire is transferred between storage reels
Inventor: EARP WILLIAM ADAMS
IPC: G11B15/28
Filed: 1949-05-31
Abstract: 685,116. Driving sound film, tape or wire. GENERAL ELECTRIC CO., Ltd. May 31, 1950 [May 31, 1949], No. 14619/49. Class 40 (ii) [Also in Group XXIV] Recording apparatus has the recording medium 20 in the form of tape, strip, or wire, transferred between reels 4, 5, the tape passing from one reel 4 via an erasing head 1, recording head 2, reproducing head 3 and tensioning devices 21, 22, 23 back to the reel 5. The reels 4, 5 are mounted on coaxial shafts 6, 7, Figs. 2 and 3, driven by a differential gear 8, driving shaft 9, reduction gear 10 and electric motor 11. The differential gear 8, Fig. 3, comprises a plate 13 mounted on the driving shaft 9, a housing 12 and shafts 6, 7, all being colinear. The shaft 6 has fixed to it a spur gear 14 and the shaft 7 a spur gear 16. Planet gears 18 mesh both the spur gear 14 and planet gears 19 meshing the spur gear 16. The shafts 6, 7 are mounted in ball races, not shown. As an alternative form of drive, the tape may be drawn from one of the reels with a constant linear velocity by such means as two rubber rollers through which it passes, in which case the shaft 9 is not the driving shaft, but may be connected to one side of a slipping clutch, the other side of which is fixed. In a modification which uses wire as the recording medium, the two reels are mounted horizontally one above the other and connected to the differential as described above. First and second pulleys are mounted about vertical axes, so that they are level with the two reels respectively. A third pulley, having a diameter equal to the difference in height between the other two pulleys is mounted between them for rotation about a horizontal axis. The wire passes from the first to the third pulley, which is tensioned to take up slack, and thence to the second pulley and the second reel. An erasing head is situated between the first and third pulleys, and recording and reproducing heads are located between the third and second pulleys. The recording wire is horizontal while passing each head.