baber/WOPTO huggingface dataset:
Patent GB-633792-A (GB)
Title: Improvements in or relating to safety devices for protecting chain or belt driven machinery
IPC: G05G15/08
Filed: 1947-09-25
Abstract: 633,792. Actuation of switches. CORFIELD, L. E., and CHANDLER, J. E. Sept. 25, 1947, No. 26039. [Class 38 (v)] [Also in Group XXIV] A switch is actuated by the movement of a weight or spring - influenced pressure member which bears on and depresses the normally tensioned driving side of a chain or belt of a machine. When overload occurs, the tautening movement of the chain or belt moves the pressure. member to trip the switch, which directly or by means of a relay interrupts the supply to the drive motor or controls the disengagement of a clutch. In Fig. 1 the pressure member comprises a rod 1 with a fork 4 carrying a wheel 5 which is biassed into engagement with the belt or chain 3 by a spring 6, the compression of which may be adjusted by nuts 8. The tightening of the belt or chain on overload moves the wheel 5 and rod 1 upwards against the compression of the spring and the end of the rod 1 moves the trip-finger 12 of a switch 10 to open the switch contacts to stop the drive. Adjustment of the switch. position is provided for by slots 13 in which fixing bolts 14 may slide. Specification 448,330 is referred to.
Patent GB-879019-A (GB)
Title: Improvements in rotary pumps
IPC: F04C5/00
Filed: 1960-07-27
Abstract: 879,019. Rotary pumps. LORD MANUFACTURING CO. July 27, 1960 [Aug. 10, 1959], No. 26090/60. Class 110 (2). The rotor of a pump comprises a spider 9 having ribs 10 supporting on each side flexible vanes 14 having edges adapted to contact the walls 18, 19, 20, 21, 22, 23 of the pump chamber in which the spider is mounted on a shaft 1. The chamber has an inlet 4 radially inwards of an outlet 5. The walls 22, 23 are formed on a helix so that their axial spacing varies from a maximum to a minimum at opposite sides as shown in Fig. 2 so that as the spider rotates pumping is effected. In a modification the blades are rectangular.
Patent GB-246908-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B21/18
Filed: 1924-11-03
Abstract: 246,908. Hancock, P. H., and Twinn, H. C. Nov. 3, 1924. Water-tube boilers; partitions and baffles in water space; priming, preventing.-In a watertube boiler of the three-drum type, the water in making a complete circuit of the boiler passes twice from the lower drum to the front upper drum. The water passes from the rear upper drum to the lower drum bv two sets of downflow tubes. Water flows from the feed compartment 4. Fig. 1, of the rear upper drum 1 through tubes 10 to the upper part of the lower drum 9, which is fitted with a baffle 7. It then flows through upflow tubes 11 to the front upper drum 3 and returns to the rear upper drum through tubes 12, from which it flows through the final downflow tubes 13 to the lower part of the lower drum and up the final upflow tubes 14. Some of the hot water in the rear upper drum may be delivered through tubes 10<a> to the upper part of the lower drum. Hot water may be directed into the feed compartment by tubes 12<a> and deflector plates 17, which may form in effect a slotted antipriming baffle. The feed compartment may be arranged at the centre of the rear upper drum instead of at the side as shown, or a separate feed drum may be provided in place of the feed compartment in the rear upper drum. The baffle in the lower drum consists of curved plates secured at their edges to lugs 7a, Fig. 6, on the wall of the drum. Further baffle plates 7<c> hinged at their upper ends to the baffle 7 and supported at their lower ends by struts 7<d> direct the water from the tubes 13 downwardly to the bottom of the drum. Two boilers may be arranged with their upflow tubes forming the sides of the combustion chamber of a single furnace.
Patent GB-965364-A (GB)
Title: Improvements relating to liquid level indicators
Inventor: WELLS GRAHAM MELBOURNE
IPC: G01F23/292
Filed: 1962-07-09
Abstract: 965,364. Liquid level indicators. HOPKINSONS Ltd. July 16,1963 [July 9, 1962], No. 26189/62. Heading G1H. In a liquid level indicator arrangement comprising a lens 10, a liquid level indicator 11, a two colour screen 17,18 and a ground glass screen 19 through which light from a source 13 passes in succession the arrangement is such that the selection of the colour on to which the light is projected is dependent upon whether it passes, through a gas or liquid in the indicator 11.
Patent GB-912398-A (GB)
Title: Automatic radio transmitter gain control circuit
Inventor: LONG VINCENT RICHARD DE
IPC: H03C1/62
Filed: 1961-07-19
Abstract: 912,398. Valve frequency selective amplifying circuits. COLLINS RADIO CO. July 19, 1961, No. 26192/61. Class 40 (6). In a radio transmitter the drive for the power amplifier valve is derived from a preceding transistor stage and grid current in the power amplifier valve is prevented by utilizing any grid current to bias back the transistor stage and so reduce the drive. In a single-sideband transmitter modulated R.F. from balanced modulator 3 is amplified by a transistor R.F. amplifier 30 in common base connection. The output of the transistor 30 is passed to a mechanical filter 14 which removes an unwanted sideband and the residual signal is then shifted to a desired transmitting frequency in two stages, by means of first and second mixers 15, 18, respectively, and local oscillators 16, 19, respectively. A bandpass filter 17 is interposed between the mixers. The output of the second mixer 18 is amplified in an amplifier 20 and applied as drive to the power valve 10 which feeds aerial 11. The power valve 10 obtains a negative grid bias from source 23 over grid resistor 25 which is also applied to the base of transistor 30; any grid current causes a voltage drop in grid resistor 25 which is also applied to the base of transistor 30 and biases it back, so reducing its gain and thus the drive to the valve 10. Specification 703,144 is referred to.
Patent GB-377012-A (GB)
Title: Improvements in cigarette holders
IPC: A24F13/14
Filed: 1931-09-19
Abstract: 377,012. Cigarette holders. BUTLER, A. C., 42, Walton Street, Chelsea, London. Sept. 19, 1931, No. 26230. [Class 130.] A cigarette holder a is provided with an extension b which supports the cigarette along one or more longitudinally extending lines or surfaces of contact. The spaces left between the cigarette and the holder form air flues. The extension b may be of various shapes and may be formed integral with the part a. Reference has been directed by the Comptroller to Specifications 194,619 and 239,772, [both in Class 130, Tobacco].
Patent GB-227538-A (GB)
Title: Improvements in milk churns
IPC: B65D51/24
Filed: 1923-10-20
Abstract: 227,538. Robinson, A. S. F. Oct. 20, 1923. Addition to 207,364. Detachable stoppers formed by clamping devices; stoppers, making.-The construction described in the parent Specification is modified by two resilient tyres 4, 5 being provided for the protection of the cover, and also by the sealing plate 1 being formed with a flange 2 by which it is secured to the cylindrical wall of the main ring 3, and by the securing screws 6 being formed with squared heads provided with cross-pins 8, eo that only a box key with a slotted boss can be applied thereto.
Patent GB-816642-A (GB)
Title: Improvements in and relating to snap action electric switches
IPC: H01H37/60
Filed: 1957-08-20
Abstract: 816,642. Thermal switches. JACKSON INDUSTRIES Ltd. (Fischer, K.). Aug. 20, 1957, No. 26287/57. Class 38 (5). A snap-action switch comprises a frame 1 having central leg 7 extending from the crossmember 4 and carrying a contact 6, said leg 7 being of greater resilience than the remainder of the frame, and the remainder having substantially higher electrical conductivity than the leg 7. The leg may be composed of cobaltnickel alloy and the remainder of the frame may be of ordinary steel. The cross-piece 5 pivots in a member 8 carried by an operating bimetal strip 13, and the leg 7 engages a fixed member 9.
Patent GB-1300350-A (GB)
Title: An apparatus for changing the charge distribution in a shaft furnace
IPC: C21B7/20
Filed: 1971-04-19
Abstract: 1300350 Blast furnace charging devices NIPPON STEEL CORP 19 April 1971 [9 April 1970] 26291/71 Heading F4B Adjustable blast furnace throat armour and charge distributers comprise overlapping plates 32 fixed to or integral with levers 33 mounted on shafts 35 in boxes 14 attached as by bolts 15 to projections 12 extending from the furnace shell, said shafts being rotated by linkages 47, 49 to a ring 44 extending around the furnace and actuated by three hydraulic motors 42 disposed symmetrically of the ring. The latter may be divided into segments (44a, 44b and 44c, Fig. 8). The shafts 35 may also be driven by electric motors (51, Fig. 7) either directly or through reduction gearing (52). Each plate 32 may hang freely from its lever 33 by a single pivot (53, Fig. 9).
Patent GB-1101394-A (GB)
Title: Improvements in dartboards
Inventor: MARKS SIDNEY
IPC: F41J3/00
Filed: 1965-06-22
Abstract: A dartboard fret is formed as an integral moulding of plastics material and may comprise rings and radial spokes defining number-valued dart-receiving areas, optionally with separate plastic "25" and "50" ring units.  The surfaces of the rings and spokes facing the direction from which the darts approach may consist of two inclined faces serving to deflect darts to one side or the other of the ring or spoke.  There may be an integral outer ring defining a surround area around the dart-receiving area, and an integral border, optionally with means for securing darts removably, outside the surround area.  The fret may be fitted to a board by inserting a central tubular flange on the fret into a central hole in the board and by fitting a rearwardly directed annular flange on the outer ring of the surround area round the edge of the board.  The whole assembly, complete with darts, may be packaged by heat-sealing a heat-shrinkable thermoplastics film about the assembly, and heat-treating the film to shrink it about the assembly.  Reference has been directed by the Comptroller to Specification 1,043,030.
Patent GB-510577-A (GB)
Title: Washing press
IPC: D06F47/00
Filed: 1938-09-09
Abstract: 510,577. Pistons; hydraulic presses. STENVERS, F. Sept. 9, 1938, No. 26335. Convention date, 'Sept. 10, 1937. [Class 122 (i)] [Also in Groups VIII and XXIX] In a washing press comprising a cylinder a containing a piston f operated by liquid pressure the piston is hollow and has a packing ring m held on its free edge by a spring ring. Pressure medium collects in a chamber i beneath the piston head and assists in returning the piston when the pressure is relieved. The cylinder cover is secured to the body by a bayonet connection. Perforations in the upper end of the cylinder permit passage of water to the exterior. The Specification as open to inspection under Sect. 91 states also that the press may be operated by air pressure and may be used for pressing fruit. A hollow piston, Fig. 4 (Cancelled), having an inlet valve w for pressure liquid is also described. This subject-matter does not appear in the Specification as accepted.
Patent GB-942143-A (GB)
Title: Coaxial connectors
IPC: H01R24/40
Filed: 1960-07-28
Abstract: 942,143. Two-part couplings. AMPHENOLBORGE ELECTRONICS CORPORATION. July 28, 1960 [July 28, 1959], No. 26345/60. Heading H2E. A two-part coaxial plug connector, designed to reduce the voltage standing wave ratio, consists of two sub-assemblies, a body 11 and a core 12, which screw together, having interfitting dielectric inserts 42 and 23 centrally bored to take a central plug contact 32, secured in the insert 23 and having a locating shoulder 33 provided with flats. The body dielectric insert 42 is encircled by a conducting sheath 46, split at its forward end to form a plurality of resilient contact fingers 47 which co-operate with the outer conducting shell 74 of a socket connector 62 (Fig. 2) having a central socket contact 83. The connectors are held in contact by paired lugs 73 on the socket connector shell 74, engaging helically disposed bayonet slots 72 in a rotatable locking sleeve 63 on the connector body containing spring washers 68 for exerting friction between the locking sleeve and flange 53. A sealing gasket 69 is compressed by the rim of the socket connector shell 74, when the two connectors are secured together. Rubber sleeves 91, 92 clip over and cover the junction of the connector with the cable. The method of attaching the cable to the connector is described in Specification 942,144.
Patent GB-982779-A (GB)
Title: Improvements in or relating to aerial vehicles
Inventor: DAVID MANSEL EDWARD
IPC: F42B10/06
Filed: 1962-07-10
Abstract: 982,779. Self-propelled missiles. ENGLISH ELECTRIC CO. Ltd. July 8, 1963 [July 10, 1962], No. 26579/62. Heading F3A. [Also in Division B7] An aerial vehicle, such as a missile, has movable wings 15 fitted on its forward or central part, and a stabilizer mounted aft of the wings for free rotation about the longitudinal axis of the vehicle and having at least three fixed incidence stabilizing fins 17 each mounted in a plane radial to the longitudinal axis. As described, there are four fins 17 fixed to a sleeve 18 mounted by ball-bearings on the rear end of the missile which is divided into compartments containing radar equipment 11, guidance and control equipment 12, the useful load or warhead 13, and a solid fuel rocket motor 14 having an exhaust nozzle 16.
Patent GB-1015620-A (GB)
Title: Improvements in or relating to the carrotting of fibrous material
Inventor: BARR THOMAS
IPC: D01C3/00
Filed: 1963-07-05
Abstract: The feltability of hair and fur is improved by treatment with an aqueous solution containing a phosphonium compound having the formula <FORM:1015620/D1-D2/1> in which X- is a monobasic anion preferably acetate or chloride, R1 is CnH2nOH and R2, R3 and R4 are CnH2nOH or CnH2n+1 and n is an integer of value equal to 1-4 and subsequently drying. 0.5-15 parts by weight of the phosphonium compound per 100 parts of fur or hair may be applied to the fur or hair as an aqueous solution buffered to a pH of 0.5-9.5 at a liquor to fur or hair ratio of 0.01-2.00.  The solution may be applied to skins, e.g. rabbit or hare skins, by hand brushing, machine brushing, machine roller, spraying or pad mangling, the skin then dried in a hot air oven, by infra-red radiation or at ambient conditions of temperature and humidity, if desired stored and the fur then cut from the skins and subjected to forming, hardening and planking.
Patent GB-444574-A (GB)
Title: Improvement relating to grass and like mowing or cutting machines
IPC: A01D34/06
Filed: 1934-09-18
Abstract: 444,574. Mowing &c. machines. ROBINSON, A. M., 4, South View, Leyburn, Yorkshire. Sept. 18, 1934, No. 26762. [Class 6 (iii)] A power-actuated mowing or like cutting machine has a transmission shaft 5 coupled at its forward end through a clutch to the engine shaft and is fitted at its rear end with a worm 6 engaging a worm wheel 7 on the rear axle 8 ; a large diameter sprocket wheel 9 fixed to the shaft 5 is coupled by an endless chain 10 to a small diameter sprocket wheel 11 mounted on and adapted to be clutched to a longitudinally and horizontally disposed lay shaft 12 mounted in brackets 13. The cutter bar 21, which extends laterally from the machinery is driven through a connecting rod 25 from a crank-pin 26 on the front end of the lay shaft and is carried by a frame 19. For transport the cutter bar is swung upwards to a vertical position about its pivotal connection with the frame 19.
Patent GB-911858-A (GB)
Title: Parachute harness strap cutter
IPC: B23D15/14
Filed: 1961-07-24
Abstract: 911,858. Cutting webs. MINE SAFETY APPLIANCES CO. July 24, 1961 [July 25, 1960], No. 26763/61. Class 31 (1). [Also in Group XXI] A device for cutting a parachute harness strap when an emergency occurs comprises a frame having a block 1 and a rectangular base 2 hinged together with manually removable means 6 for positively connecting them together to form a strapreceiving slot 7, a cutting blade 11 disposed in a recess 10 extending across the slot, a piston chamber 14 with a piston 13 for driving the blade, a cartridge chamber 19 with a passage 18 to the piston chamber, spring- actuated means 28, 27 for driving a firing-pin 26 into firing engagement with the cartridge 23 in the chamber 19, and means which normally maintain the spring- actuated means retracted but are manually movable to permit firing. The firing-pin 26 is normally held retracted against the action of its spring 28 by a stop 31, Fig. 5. To operate the device, a cover 38, Fig. 1, which is clipped on to the frame at 39, is first removed to expose a pullknob 35 situated in either recess 37 or 40. A pull on the knob acts through a lanyard 34 to disengage the stop 31, Fig. 5, from the spring-loaded firing-pin 26, thus allowing the pin to detonate the cartridge 23. The expanding gases from the cartridge then drive the piston 13 and blade 11 to cut the strap. The blade 11 is carried by the piston 13 and these members are normally held in retracted position by a shear pin 15. In a modification, the firing-pin 72, Figs. 7 and 8, is slidably mounted in a plug 70 which has a radial passage 71 through it in line with holes 63, 64 in a breech-block 62. Encircling the plug 70 is a stop 65 with diametricallyopposite holes 68 and a peripheral groove 66 with flattened areas against which a spring- urged hammer 59 normally bears. To operate the device, a knob 74 which is attached to the stop 65 is turned until the radial holes 68 in the stop line up with the passage 71 and the breechblock holes 63, 64. At that instant the hammer 59 springs forward and strikes the firing-pin to drive it through the hole 63 and detonate the cartridge.
Patent GB-1399613-A (GB)
Title: Apparatus for effecting gas flow pressure reduction with low noise generation
IPC: F16K47/08
Filed: 1972-06-08
Abstract: 1399613 Fluid regulation MASONEILAN INTERNATIONAL Inc 8 June 1972 [10 Dec 1971] 26774/72 Heading G3H [Also in Divisions Fl and F2] A valve for low-noise reduction of the pressure of a gas flowing in a conduit, comprises at least two perforated coaxial cylinders 23, 28, Fig. 1, and a valve plug 22 movable to adjust flow through the perforations. Thus pressure reduction is achieved in at least two stages to thereby reduce noise generation. In the embodiment shown the gas flows radially outwardly through the cylinders and the plug is adjustable relative to the minor cylinder and is co-operable with seating 24. The inner cylinder may be inverted so as to extend downwardly below partition wall 15, and have the adjustable plug located therein, Fig. 2 and 5 (not shown). Alternatively, in an arrangement for gas flow radially inwardly through the cylinders, the upper end of the inner cylinder has an imperforate cylindrical extension and houses an elongated pressure-balanced plug movable out of the extension to obturate the perforations, Fig. 6 (not shown). In other embodiments, not shown, the plug may be attached to the inner and/or outer cylinders. The perforations may be rectangular, and may be arranged in the pattern of a helix as shown with the perforations in the outer cylinder circumferentially staggered relatively to those in the inner cylinder. The outer cylinder may have circular perforations. The perforations are such that the pressure drop across the valve is divided substantially evenly across the cylinders when the plug is in its fully open position, the perforations of the downstream cylinder having a total area which is about twice that of the perforations of the upstream cylinder. The cavity between the telescoped cylinders acts as a resonant noise-damping cavity. Moreover, the plurality of perforations establishes a relatively high frequency noise which is easier to attenuate.
Patent GB-622239-A (GB)
Title: Improvements in or relating to tank floats
IPC: F16K33/00
Filed: 1946-09-06
Abstract: 622,239. Floats. LIQUIDOMETER CORPORATION. Sept. 6, 1946, No. 26819. Convention date, Dec. 22, 1945. [Class 135] A float 14, Fig. 2, e.g. for operating a liquidlevel indicator, is prevented from contacting the walls of the liquid tank by buffer pads 22 attached to a metal band 32 having out-turned ends secured by a muff coupling 36 to a pin riveted in the float rod 16. Each pad 22, Fig. 5, is formed of a disc of brake-lining material riveted to a metal plate having projecting arms 26 with feet 30 which are passed through slots 42 in the band.
Patent GB-945981-A (GB)
Title: Improvements in animal feeding stuffs
Inventor: HARRIS RICHARD CRAIG
IPC: A23K1/00
Filed: 1959-08-06
Abstract: An animal lick comprises a solid substantially homogeneous admixture of glucose or other crystallizable sugar, and a non-toxic water-soluble solution inhibitor which is a natural or synthetic gum or other colloidal substance capable of forming a highly viscous solution in water e.g. gum acacia, methyl-, methyl ethyl- or sodium carboxy methyl-cellulose, sodium alginate or pectate, gelatine, soluble starch derivatives, in amount by dry weight of from 0.25% to 10% of the total admixture.  Chalk in amount 1 to 15% and other nutrients &c. may also be incorporated as described in Specification 938,921.
Patent GB-897864-A (GB)
Title: Improvements in or relating to voltage regulating apparatus
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: G05F1/32
Filed: 1958-08-21
Abstract: 897,864. Automatic control systems for arc furnaces. GENERAL ELECTRIC CO. Ltd. Aug. 17, 1959 [Aug. 21, 1958], No. 26914/58. Class 38 (4). [Also in Group XXXIX] An electric arc furnace 1 connected to a three-phase A.C. supply is provided with compensating means to prevent asymmetric loading of the supply. The furnace 1 is connected to an A.C. supply 2 together with three saturable reactors 4 only one of which is shown. The reactors 4 are connected in delta and are provided with control windings 8 supplied from a rectifier 9 connected to the A.C. supply 2. A transformer 16 has its primary winding 15 also connected to the supply 2, each phase of the secondary winding 17 being connected to a control device 18 wherein is produced a signal which controls the rectifier 9 thereby controlling the energization of the winding 8 to vary the impedance of the reactor 4 to compensate for the unbalance of the supply 2 produced by the furnace 1. The effect of the harmonics produced in the reactor 4, on the rectifier 9 are minimized by an inductor 10 whilst filters 11-13 are provided to by-pass other harmonics. The inductor 10 may be tapped so that a part thereof may form part of one filter. Further filters 19 may be provided which may also give power factor correction. Specifications 629,829 and 897,865 are referred to.
Patent GB-915255-A (GB)
Title: Installation and method for pulverizing and comminuting thermoplastic material
IPC: B29B17/04
Filed: 1961-07-26
Abstract: 915,255. Pulverizing thermoplastic material. JAECKERING, G., [trading as JAECKERING MUEHLENUND NAEHRMITTELWERKE, H.]. July 26, 1961 [Oct. 25, 1960], No. 27029/61. Class 59. A process for pulverizing and comminuting thermoplastic material comprises subjecting the pre-crushed starting material to a whirling and comminuting operation in a gas flow with an admixture of gas of at least 30,000 parts by volume at atmospheric pressure per part by volume of starting material, the operating time being not more than 1.2 seconds. The gas is air and the upper admixture limit 90,000 parts by volume. The grain size of the pre-crushed material is between 5 and 10 mm. while the upper grain size limit of the finished material is from 0.4 to 0.5 mm. As shown, pre-crushed material is fed through hopper 2 and valve 3 to a comminutor 1 comprising plates 1a which sweep past a fluted stator 1b, a blower 1c and air inlets K. The comminutor is connected to a cyclone separator 4, the comminuted material from which passes to a grading screen 5 the oversize from which is returned to the inlet of the comminutor or is passed to a second comminutor 7 provided with air inlets K. Air leaving separator 4 passes to a filter 6.