baber/WOPTO huggingface dataset:
Patent GB-664477-A (GB)
Title: Improvements in automatic reversing arrangements for electric motors
Inventor: DAWES WILLIAM ALFRED
IPC: H02K11/00
Filed: 1949-09-29
Abstract: 664,477. Control of motors; controllers. NORTON & CO., Ltd., Sir J. F. Sept. 20, 1950. [Sept. 29, 1949] No. 24995/49. Class 38 (iii). An arrangement for providing an adjustable period of operation for an electric motor before reversal comprises a motor-driven worm a engaging a two-part worm wheel b, c, which separately drives through friction clutches discs f, h, of insulating material. Electric contacts in a circuit for reversing the motor are adapted to engage contacts on the peripheries of both discs when the discs are in definite relative positions the teeth on the two parts b, c, being of slightly different pitch so that the discs are driven at different speeds. The disc f is secured to shaft i, which is fixed to a part f in frictional driving engagement with the member b. A handle k allows for aerial movement of the shaft to release the frictional engagement between parts f, b, and turning of the handle sets the disc f in its desired initial position. A handle r turns arm 8 to displace disc h and sleeve g axially and rebases the frictional pressure between the parts g and c. The disc h is then positioned by movement of the handle m which turns, through gearing n, o, p, a gear wheel q secured to the disc. Operation of the handles k and m thus determines the number of revolutions of the worm wheel a which occur before the motor is reversed.
Patent GB-278351-A (GB)
Title: Improvements in laminated springs
IPC: F16F1/22
Filed: 1927-09-22
Abstract: 278,351. Burnand, E. Oct. 1, 1926, [Convention date]. Laminated springs.-Auxiliary laminations 12, Fig. 3, pressed against the pile of main laminations 1 by means of stirrups 3 in such a manner that their pressure diminishes as the flexion of the spring increases are combined with other auxiliary laminations having the opposite effect such as the lamination 13, or the middle part of the lamination 12. Several different arrangements of auxiliary laminations are described. Specifications 216,440 and 262,705 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the arrangement shown in Fig. 1 (Cancelled) in which only the first type of auxiliary lamination referred to above is employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-1105867-A (GB)
Title: An actuator for the valve of a pressurized dispensing container
IPC: B65D83/16
Filed: 1966-06-06
Abstract: 1,105,867. Pressurized liquid dispensing containers. PRECISION VALVE CORPORATION. June 6, 1966 [June 14, 1965], No.25057/66. Heading F1R. [Also in Division F2] The discharge port of a pressurized dispensing container valve actuator is closed by a seal comprising an integral tubular extension sealed at its extremity and having a wall thickness smaller than that of the conduit leading from the valve stem to the port so that the extension may be cut or torn to expose the port.
Patent GB-480372-A (GB)
Title: Improvements in ventilators
IPC: F24F7/00
Filed: 1936-09-15
Abstract: 480,372. Ventilators. EARL, R. T., and EARL, R. A. Sept. 15, 1936, No. 25106. [Class.137] Ventilators of the type comprising an apertured screen applied to the inner end of a wall opening or ventilating shaft include a plate 5 constructed in one piece from a synthetic resinous material with apertures 12 formed as spaced louvres, the plate being secured over the mouth of the wall opening by one or more bolts 14 having bent end 16 which engages an air brick 15 or equivalent block at the outer end of the opening. The threaded inner end of the bolt receives a nut 18 accommodated in a boss 19 projecting rearwardly from the plate. A modification comprises a pair of apertured plates one of which is arranged to slide to bring the aper. tures into or out of register. The ventilator may be made of sheet metal.
Patent GB-308698-A (GB)
Title: Improvements in talking machines
IPC: H04R11/08
Filed: 1927-09-23
Abstract: 308,698. Purser, W. S., and Holman, H. E. Sept. 23, 1927. Phonographic recorders and reproducers; magnetic instruments. - Vibration responsive apparatus, more particularly a device for recording or reproducing sound, is provided with damping means consisting of a number of juxtaposed separate strips or sheets cf rubber or other resilient vibration absorbing medium arranged on each side of the vibration member in the direction of its vibrations. The strips or sheets may be of the same or different materials. In the construction shown, the armature b of an electrical recording apparatus is pivoted at e and carries at its upper end a plate a arranged in a casing c containing a series of juxtaposed rubber strips d arranged upon each side of the plate. Artificial resonance may be added as described in Specification 308,747 by interposing one or more large inertia bodies k amongst the strips d and by forming the stylus arm f carried by the armature b with a reduced part g, movement of the armature being communicated to the stylus arm through fingerpieces h and resonance inserts i.
Patent GB-839294-A (GB)
Title: Dryers for magnetic oxygen meters
IPC: G01N27/74
Filed: 1958-08-06
Abstract: <PICT:0839294/III/1> A gas to be tested for its oxygen content and air are kept separate by a wall 4 but a liquid of limited solubility for water is free to flow beneath the wall so that the water pressure throughout the liquid can adjust itself to a uniform valve which corresponds to the mean value of the moisture content of the gas and air prior to entry into the equalizer.  The gas is led via a conduit 1 and a valve 13 to the cylinder 3 and, when dried, through a conduit 5 to the oxygen meter from whence it is led through conduits 6, 7 to a suction device 8.  A large proportion of the gas by-passes the equalizer through a valve 15 and conduit 14 to the device 8 while the comparatively dry air enters the equalizer through an aperture 9 and leaves as comparatively wet air through conduits 12, 7 to the device 8.
Patent GB-1102686-A (GB)
Title: Improvements in or relating to needle or roller bearings
IPC: F16C19/46
Filed: 1965-06-15
Abstract: 1,102,686. Bearings. TORRINGTON CO. 15 June, 1965 [23 June, 1964], No. 25155/65. Heading F2A. A roller bearing outer race 8 has integral radially inwardly directed flanges 12, 13 at its ends to retain the rollers, and an integral radially outwardly directed flange 14 at one end to limit axial movement of the race into.a bearing housing 6. The race is of sheet metal and the flanges 14, 13 formed by bending one end radially outwardly and then inwardly. The bearing is particularly a needle bearing.
Patent GB-795002-A (GB)
Title: Improvements in or relating to bismuth telluride
Inventor: GOLDSMID HIROSHI JULIAN
IPC: C01B19/00
Filed: 1955-09-01
Abstract: A semi-conductor material comprises bismuth telluride containing at least one of the elements iodine, bromine and chlorine as a donor impurity.  In one embodiment stoichiometric proportions of bismuth and tellurium and 0.1 per cent by weight of iodine are placed in a cylindrical silica boat which is then evacuated in 15 minutes to 10-5 mm. of mercury, sealed, and heated for 3 hours at 900 DEG  C.  The product is then melted by induction heating in a silica boat and thus formed into an ingot which is then subjected to single pass zone melting in a flow of inert gas at atmospheric pressure.  In an alternative method the iodine is replaced by bismuth tribromide in such an amount that 0.04 per cent by weight of the melt is bromine. In this case reverse pass zone melting is used instead of single pass.  In a further alternative bismuth trichloride is used in place of the tribromide.  The resulting materials are of N-type conductivity and have a resistivity of 1 milliohm cm. and a thermoelectric power of 200 microvolts/ DEG  C.
Patent GB-830185-A (GB)
Title: Border stabilizer for spring interior mattress
Inventor: DREWS GUSTAV
IPC: A47C27/05
Filed: 1957-08-09
Abstract: 830,185. Mattresses. ECLIPSE SLEEP PRODUCTS Inc. Aug. 9,1957, No. 25209/57. Class 52(4) In a spring interior mattress having spiral springs 3 mounted between upper and lower wire frames 5, 6, top and bottom padding layers 7, 8, top and bottom ticking 9, 10 and edge strips of ticking 11 secured to the ticking 9, 10 by stitching 19, 22, a border stabilizer consists of a strip 12 of sponge rubber or like material nesting with peripheral springs 3 and cemented to upper and lower tapes 15, 16 secured in place by the stitching 19, 22. Strips 12 may extend right round the mattress or along the long sides only. As shown they have a convex section 26 fitting the springs but the cross-section may be rectangular in which case the wider turns of the springs dig into the sponge rubber.
Patent GB-435345-A (GB)
Title: Improvements in or relating to the manufacture of activated carbon
IPC: C01B32/336
Filed: 1934-09-01
Abstract: Active carbon of low apparent density is obtained by leaching the block ash residue resulting from the digestion of esparto grass with alkali, and containing mainly pectocellulose, with water until it has a pH value between 9 and 10, heating it to a temperature of 700--1000 DEG  C. in the presence of limited amounts of air or oxygen and then continuing the heating together with excess of air or oxygen at a temperature of 400--500 DEG  C.  The black ash residue may be dried or carbonized while containing up to 75 per cent moisture, and this process is preferably carried out in thin layers, the mass being continually moved to expose fresh surfaces, e.g. in a Herreschoff oil-fired furnace, the amount of oxygen being controlled by diluting the air admitted with dry steam. Carbons of the highest activity are obtained by treatment at the highest temperature.  The second activation stage is carried out on a hot plate in a furnace casing maintained at 400--500 DEG  C. and provided with rabble arms for moving the carbon in a spiral path from the inlet at the centre to the outlet at the periphery of the plate.  The temperature is maintained by partial combustion of the carbon, and controlled by the admission of air and by sliding screens placed around and over the plate.  Alternatively, the activation may be carried out in the carbonization furnace.  To obtain a neutral or acid carbon, the carbon may be sprayed with hydrochloric sulphuric or phosphoric acids before the activation process, or immediately before it leaves the second furnace.  To reduce the ash content, the activated carbon may be washed with water or dilute acid and dried.  To increase the density of the product, a proportion of wood, wood charcoal, coconut shell or charcoal therefrom, corozo nuts, apricot stones or other ligno-cellulosic material may be added to the black ash residue. A carbon suitable for decolorizing cotton seed oil consists of a mixture of active carbon produced as above with ash content not greater than 3 per cent and finely ground inactive charcoal of similar ash content.  A proportion of animal charcoal, e.g. Ivory Black may also be added.  Specification 300,146, [Class 90], is referred to.
Patent GB-818053-A (GB)
Title: Improvements in or relating to cooling towers
IPC: E04H5/12
Filed: 1954-08-31
Abstract: 818,053. Building slabs. MITCHELL, F. G. Aug. 18, 1955 [Aug. 31, 1954], No. 25283/54. Class 87(1) [Also in Group XIII] A concrete plate for building hyperboloidal cooling towers (see Group XIII) has two longitudinal straight edges 14, 15 which are skewed with respect to one another, and two short edges. One longitudinal edge 14 is tongued and the other 15 is grooved; the tongued edge is provided with a mortar groove.
Patent GB-960001-A (GB)
Title: Improvements in or relating to implements for spreading powdered or granular material
IPC: A01C17/00
Filed: 1960-07-20
Abstract: 960,001. Powder distributers. C. VAN DER LELY N.V. July 20, 1960 [Oct. 26, 1959], No. 25318/60. Heading A1D. A machine for distributing powdered or granular material of the kind comprising a container 6 through which material is fed to a centrifugal distributer 11 is characterized in that material is fed from the container through a wall member 19, which can be removed and replaced by a member 49 having outlet openings of a different shape and size. As shown the effective area of the opening is determined by the relative setting between the wall member 19, 49 and a shutter member 41, 62. In a modification a wall member is provided with two sets of openings, a large opening of one set being adjacent to a small opening of the other set. In a further modification a wall member is provided with two sets of openings which are removed 180 degrees from each other. Specifications 890,715, 940,421, 940,423 and 960,002 are referred to.
Patent GB-744205-A (GB)
Title: Improvements in glass compositions
Inventor: STANWORTH JOHN EDWIN
IPC: C03C3/12
Filed: 1953-09-14
Abstract: 744205. Glass. BRITISH THOMSONHOUSTON CO. Ltd. Aug. 10, 1954 [Sept. 14. 1953], No. 25337/53. Class 56 In a glass composition comprising a glass-forming oxidic component and a glass-modifying oxidic component, the glass-forming component consists solely of vanadium pentoxide and constituents from 46 to 73 per cent by weight of the composition, and a major proportion of the glass-modifying oxidic component consists of lead oxide or barium oxide.
Patent GB-587647-A (GB)
Title: Improvements relating to electromagnetically operated jack-type actuators
IPC: F16H25/22
Filed: 1944-12-18
Abstract: 587,647. Screw-and-nut gearing ; controlling change - speed gearing. ROTAX, Ltd., and MILLNS, T. W. Dec. 18, 1944, No. 25398. [Classes 80 (ii) and 80 (iii)] [Also in Groups XXVI and XXX] In a jack-type actuator for controlling changespeed gearing &c. motor b transmits motion through pinion k and idle pinion m, to toothed wheel q which is formed integral with a screwthreaded rotary spindle s. The latter transmits motion to the slidable crutch c by means of a nut comprising a cage 8 having balls 7 engaging the thread of the spindle s. Idle pinion m is supported by pivoted link n so that under the influence of spring 6 it is normally out of engagement but may be brought into action by the effect of plunger y, moving into recess 2 in pinion m upon the excitation of electromagnet 3. Toothed wheel c may be formed upon drum r within which is coiled spring t, connected at one end to the drum and at the other to stationary shaft u. Motor brake d may consist of spring- loaded member i bearing against disc f carried on armature spindle g and released by energizing electromagnet e. Limit switch 10 may interrupt circuit of motor b when the crutch c reaches a limiting position. Fig. 3 indicates the electrical circuit b' and b<2> being the windings of the motor armature and field respectively. At rest, armature of motor b is held by brake d. Upon supplying current to motor, brake d is released and electromagnet 3 is energized to cause plunger y to be inserted in recess 2 so that idle pinion m is aligned to transmit power from motor so as to move crutch c till switch 10 is actuated to stop the motor and release brake d. Electromagnet 3 remains excited to maintain extended position of the crutch. To retract the latter, electromagnet 3 is de-energised so that idle pinion m moves out of alignment and the crutch is free to be returned under the influence of spring t previously loaded upon extension.
Patent GB-518631-A (GB)
Title: Improvements relating to devices for testing and separating coins
IPC: G07D5/00
Filed: 1938-08-30
Abstract: 518,631. Separating coins and tokens. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and ROBINSON, M. H., Aug. 30, 1938, No. 25399. [Class 27] To test and separate coins having a polygonal periphery from those having a circular one, the coins are rolled on edge down a slope a across a gap b. Circular peripheries jump the gap with sufficient momentum to pass on to a collecting channel f, whereas polygonal peripheries fail to pass up the incline d and roll back into the passage b. In passing, the coin may operate mechanism h to operate a counter, issue an article or ticket, or perform other similar operations.
Patent GB-604468-A (GB)
Title: Improvements in and relating to control mechanism
IPC: G05D23/02
Filed: 1945-10-01
Abstract: 604,468. Fluid-pressure servomotor-control systems. NEGRETTI, H. N., NEGRETTI, P. E., and HIGGS, A. H. Oct. 1. 1945, No. 25479. [Class 135] In a control mechanism for controlling physical variables, e.g. temperature or pressure, in which the controlling means, e.g. a valve, is operated by the pressure set up behind a nozzle 14 by a member coacting with the nozzle and movable in response to variations in the variable as detected by a sensitive element 16, "throttling range " variation is effected by arranging for the movable member to be subjected to an adjustable force which, in the undeflected position of the member, has no component in the direction along the axis of the nozzle but which, in a deflection position, exerts a restoring force. The sensitive element 16 acts, through a link 17, on a U-shaped member 3, pivoted or flexed about an axis A-A and having pivoted or flexed thereto, about an axis B-B a U-shaped member 4 loaded by a spring 2 and carrying the member coacting with the nozzle. A pivoted lever 8 transmits the force of an adjustable compression spring 12, through an adjustable rod or ball 7, to a pivoted lever 6, to which is fixed a rod 5, connected to the member 4. The members 3, 4 and the rod 5 are arranged to be in the same plane at zero deflection so that the force of the spring 12, acting through the rod 5, has no vertical component on the member 4, but upon deflection of the sensitive member, a vertical component of this force is applied to the member 4. A pointer 10, moving over a scale, indicates the setting of the pin or rod 7.
Patent GB-592012-A (GB)
Title: Electrically heated apparatus for applying steam and heated air for therapeutic, hygienic and beauty-treatment purposes
IPC: F22B1/28
Filed: 1944-12-19
Abstract: 592,012. Electric steam and air heaters. ILARRAZA Y SEGURA, T. D. DE. Dec. 19, 1944, No. 25490. Convention date, Dec. 20, 1943. [Class 39 (iii)] [Also in Group VI] A steam boiler 1 for therapeutic and beauty treatment purposes heated by electric resistances 3, comprises a steam outlet 7 leading to a superheating spirally-coiled tube 12 in a closed chamber 10 wherein are disposed heating resistances 14 characterised by hot air being injected into said chamber over heating resistances 16 by a fan 15. The superheater tube outlet 13 and the hot air outlet 17 leading from the chamber 10 may, when required, be connected by a mixing arrangement 18. The boiler comprises a water inlet 4 having sealing fastening means and a further steam outlet 5 for use when wet steam is required.
Patent GB-616079-A (GB)
Title: Improvements in friction lighters
IPC: F23Q2/08
Filed: 1946-08-26
Abstract: 616,079. Frictional lighters. COLIBRI LIGHTERS, Ltd., LOWENTHAL, J., and MOORE, C. W. Aug. 26, 1946, No. 25500. [Class 75 (iii)] In an automatic frictional lighter a cam surface 31 on a pivotally mounted thumb piece 29 engages with a roller 251 rotatably mounted on the free end of a lever 25 pivotally mounted on the body of the lighter so that when the thumb piece is rocked the roller rides along the cam surface 31 and the lever 25 is rocked to rotate the wick cap 22 to which it is connected by a link 27 ; a one way clutch between the flint wheel 16 and the wick cap causes the flint wheel to rotate. A spring 33 mounted on the pivot pin of the lever 25 returns the parts to the closed position of the lighter ; alternatively, a return spring may be associated with the wick cap 22. The cam surface 31 may be curved or parallel to the outer surface of the thumb piece. The flint wheel 16 is disposed within a pocket 23 formed by the wick cap 22 and a pair of side plates 15 and a roller 24 freely housed within the pocket 23 becomes wedged between the wick cap and the friction wheel when the wick cap opens.
Patent GB-827421-A (GB)
Title: Glass bending mould
IPC: C03B23/027
Filed: 1957-08-14
Abstract: 827,421. Bending glass sheets. PITTSBURGH PLATE GLASS CO. Aug. 14, 1957 [Oct. 24, 1956], No. 25644/57. Addition to 808,716. Class 56. In a sectionalised concave glass-bending mould wherein a large force is applied to the ends of the glass sheet at the start of the mouldclosing and is reduced to a small force as the mould reaches closed position, means which are operative as the mould closes are provided to reduce the weight (or to oppose the action of the weight without overcoming it) that biasses the mould to closed position. Several forms of apparatus are described. In Fig. 3, for example, which shows a mould partly closed, all the weights 8, 10, 13 are operative at the start of the closing but as the section 2 reaches the position shown the weight 13 contacts a stationary shelf 15 on the stationary section 1 and the lever arm 12 pivots clockwise relatively to the arm 6 which continues its movement, with weights 8 and 10 alone effective, until arrested by stop 17. In another form, Fig. 12, the mould starts closing under the action of the weights 41, 42 until 41 contacts, and rotates, a weighted lever 43 on the stationary section 1 to reduce the weight acting on the lever 40. Two weighted levers 43 may be provided to be engaged, successively, by the weight 41 whereby the weight acting on the lever 40 is reduced in two stages. In Fig. 21, the pivoted arm 57 of the thermal ballast member 55 initially rests on a stop 59 and remains there until, as the mould closes, the under face of the member 55 is engaged by a stirrup-like member 61 carried by the mould element 2. The member 55 and arm 57 now move with the element 2 thereby opposing the action of the weighted lever 52.
Patent GB-801813-A (GB)
Title: Process for the continuous production of high linear condensation polymers
IPC: C08G63/78
Filed: 1956-08-22
Abstract: In a process for making a high linear condensation polymer (especially polyethylene terephthalate) wherein primary components are continuously reacted to form a polymerizable monomer, the monomer is prepolymerized to form a continuous stream of low molecular weight polymer and the low molecular weight polymer is continuously polymerized in a final polymerization vessel to form a stream of high molecular weight polymer, the level of polymer in the final polymerization vessel is maintained constant by adding to the monomer a controlled amount of particles of solid polymer, chemically identical with said high molecular weight polymer.  Dimethyl terephthalate and ethylene glycol are continuously reacted in the <PICT:0801813/IV (a)/1> ester-interchange column described in Specification 753,526 and the resulting bis-2-hydroxy-ethyl terephthalate (and low polymers thereof) fed to an agitated mixing vessel wherein particles of polyethylene terephthalate (preferably having a maximum dimension no greater than 3/16 inch) are dissolved in it.  The resulting solution of polymer in monomer is then continuously prepolymerized in the apparatus of U.S.A. Specification 2,727,882. Vapours of ethylene glycol are withdrawn from the top of the prepolymerizer and low molecular weight polyethylene terephthalate (intrinsic viscosity 0.19-0.22) withdrawn from just below the uppermost plate and fed to a final polymerizer of the type disclosed in U.S.A. Specification 2,758,915.  The final polyethylene terephthalate (intrinsic viscosity 0.65) is withdrawn from this vessel and pumped to an extrusion die.  In accordance with this invention, the level of polymer in the final polymerizer is observed. When it began to rise above the desired level, the amount of polymer particles dissolved in the monomer is reduced and vice versa.