baber/WOPTO huggingface dataset:
Patent GB-607990-A (GB)
Title: Improvements in or relating to gear changing systems
IPC: F16H3/36
Filed: 1946-02-13
Abstract: 607,990. Variable-speed gear. AKTIEBOLAGET LJUNGMANS VERKSTADER. Feb. 13, 1946, No. 4515. Convention date, Feb. 15, 1945. [Class 80 (ii)] In a variable-speed gear of the type where a face gear 4 has a number of concentric rings of teeth which co-operate with one or more gears 16, 17 displaceable axially by operating yokes 22, 23, the members 18, 19 displacing the gears 16, 17 being provided with a device 35 which forms a lock for the members 18, 19 when the gears 16, 17 and 4 are engaged. The gear 4 is movable axially against a spring by a fork 29 rigid with a shaft 32 which also carries the plate 35 having an opening 36 to allow a key 37 to be engaged with the screwed members 18, 19 to move the gears 16, 17 axially. When the gear 4 has been moved axially out of engagement, the opening 36 is aligned with the members 18, 19. A peg 38 on the key 37, co-operating with a notch in the opening 36 allows the key to be inserted and removed only at each revolution and the pitch of the screws 18, 19 may be such that correct meshing of the gears occurs only at a complete number of revolutions. Bevel gears 41, 43 and 42, 44 may be used to drive mechanism indicating the position of the gears 16, 17 and means may also be provided giving indication of the position of members 18, 19 by a spring- loaded detent.
Patent GB-379376-A (GB)
Title: Improvements in or relating to means for locking or jamming together sections of hatch covers
IPC: B63B19/24
Filed: 1931-05-29
Abstract: 379,376. Hatch covers. ISHERWOOD, SIR J. W. and ISHERWOOD, W., Raggles Wood, Chislehurst, Kent. May 29, 1931, No. 4625/32. Divided on 379,694, and addition to 252,254, [Class 113 (i), Ship and boat fittings &c.] [Class 113 (i).] A device for locking the sections of a hatch cover in position comprises bars 12, 13, Fig. 1, interposed transversely of the bays of hatch sections, the bars being laterally expansible so as to jam the sections against one another. Incidentally the expanding movement moves other bars 8, provided with looking elements longitudinally to lock the sections in position. The expanding-device is shown in Fig. 6, as comprising the bars 12, 13 which are moved apart or together by the co-operating wedges 14, 16 operated by the screw device 20. In a modification, a spring-controlled cam is employed to'separate the bars. In a further modification, a centrally disposed wedge, co-operates with wedges mounted on both bars 12, 13. The arrangement for locking the sections comprises the upstanding hook 21, Fig. 9, on the hatch beams which co-operates with extended L-shaped slots 22 in the locking. members 8.
Patent GB-768058-A (GB)
Title: Lubricating device for a motor-driven air compressor
IPC: F04B39/00
Filed: 1955-02-16
Abstract: 768,058. Reciprocating compressors. TEVES, H., and TEVES, E. A., [trading as TEVES MASCHINEN-UND ARMATURENFABRIK KOMM-GES., A.]. Feb. 16, 1955 [Feb. 18, 1954], No. 4700/55. Class 8(1) [Also in Group XXXIV] In a motor-driven air compressor in which a piston 15 is reciprocated in a cylinder 16 by means of a hollow rotating crankshaft 4, lubricating oil is supplied to the compressor by means of a worm 10 which is non-rotatably attached to the bearing body 1 and projects into the crankshaft. As the shaft rotates oil is drawn from the sump up past the worm into a space 11 from which the oil may pass to parts to be lubricated, by way of radial bores 12 or by way of a chamber 13 and grooves 14 in the rotor carrier 5 of the motor and in the bearing member 3.
Patent GB-1580017-A (GB)
Title: Derivatives of dialkyl formals
IPC: A01N47/16
Filed: 1978-02-06
Abstract: The compounds of the formula I, whose symbols are defined in Claim 1, can be used as rubber curing accelerators, biocides, antioxidants, corrosion inhibitors and as a sulphur-containing oil additive. Q-(CH2)n-(OCH2)m-O-(CH2)n-X  (I)
Patent GB-415077-A (GB)
Title: Improvements in the manufacture and treatment of textile materials containing cellulose derivatives
IPC: D06M11/38
Filed: 1933-02-16
Abstract: Filaments, threads, yarns, ribbons, and like textile materials containing a cellulose ether-ester having an ether content of not more than one ether group per C6H10O5 molecule are subjected to a saponification process.  The products have high tenacity with increased affinity for cotton dyes.  The cellulose ether-ester may have mixed ether and ester groups.  It may be methyl, ethyl, propyl, or benzyl cellulose acetate and may be extruded from solutions in acetone with or without alcohol or water by the dry or wet spinning process.  The filaments may be stretched or shrunk continuously with or subsequently to production, and solvents may be applied to facilitate such treatments.  The saponifying agent may be caustic soda or potash, ammonia, sodium silicate, or sodium phosphate, and it may be used in aqueous or alcoholic solution.  The materials may be treated in hank, bobbin, cheese or other package form or while travelling in separate thread or warp formation.  In an example, dry spun threads of an ethyl cellulose acetate of composition within the limits specified are stretched and then passed in warp formation through a hot solution of caustic soda and salt.  In another example, the yarn is treated in hank or cake form for several hours in very dilute caustic soda in methyl alcohol.  In another example, the yarns are passed in warp formation through a padding mangle and impregnated with aqueous caustic soda solution.  They are then passed over steam heated rollers to effect saponification.  Specifications 277,089, 314,446, 314,447, 316,521, 318,468, 323,790, [all in Class 2 (ii)], 340,324, 343,062, 351,417, 370,430, 371,461, 389,823, and 402,106 are referred to.  The Provisional Specification refers also to Specifications 164,374, 164,375, 164,377, 165,519, 177,868, 179,234, 198,023, 203,092, 207,562, 249,173, 263,938, 300,998, 308,322, 308,323, 309,201, 312,095, 312,096, 312,098, 325,233, [all in Class 2 (ii)], 340,325, 340,437, 380,504, 380,505, 402,104, 402,105; and 414,751, [Group VIII].
Patent GB-638698-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B37/00
Filed: 1948-02-19
Abstract: 638,698. Refrigerating. ELECTROLUX, Ltd. Feb. 19, 1948, No. 4875. Convention date, Feb. 28, 1947. [Class 29] In an absorption refrigerating system of the inert gas type, rich gas mixture from the evaporator enters an absorber vessel 13 by a pipe 12 and leaves in two streams one of which flows through an absorber coil 17 and the other of which flows through another absorber coil 10, the two streams joining together at 19 and flowing through the upper part of the coil 10, the coils 17 and 10 being superposed and traversed in series by weak solution. In a practical embodiment (Fig. 2, not shown), the pipe 12 and a supply pipe 15 for weak solution may be disposed in heat exchange.
Patent GB-201862-A (GB)
Title: Improvements in or relating to machines for mixing granular or pulverulent substances
IPC: B01F13/00
Filed: 1923-02-20
Abstract: 201,862. Porteus, G. Feb. 20, 1923. Stationary batch-mixers with stirrers carried by endless chains. - In a mixing-machine for granular and pulverulent materials, comprising a V-shaped casing fitted with means for mixing and feeding the material downwardly to a base trough fitted with a discharge worm, the feeding and mixing means comprises a pair of oppositely disposed and converging endless band conveyers. The conveyers 4 are geared together by spur gears 5 and are driven in either direction by a pulley 6, a swivelling damper 7 being provided whereby the materials may be fed to the worm 3 with, or without, a preliminary mixing in the casing 1.
Patent GB-413993-A (GB)
Title: Improvements in or relating to land-planes
IPC: B64C29/00
Filed: 1934-02-14
Abstract: 413,993. Aeroplanes. DORNIERMETALLBAUTEN GES., and DORNIER, C., Friedrichshafen, Lake Constance, Germany. Feb. 14, 1934, No. 4918. Convention date, March 11, 1933. [Class 4.] A landplane has a single tractor propeller with its axis normally parallel to the wing chord, but adapted to be vertically displaceable and/or upwardly tilted to clear the ground when taxying. The tilting mechanism may be interconnected to a retractable undercarriage. A propeller is shown tiltable with its engine and casing 2 about a pivot 4 at the front of the fuselage, but a fixed engine with a flexible or articulated propeller shaft may be used. A short undercarriage comprising wheels carried on pivoted arms 7 is provided and is raised by cables 9 connected to rods 11 coupled to the casing 2.
Patent GB-715685-A (GB)
Title: Improvements in or relating to voltage breakdown devices
Inventor: BREADNER ROBERT LEONARD
IPC: H01T4/12
Filed: 1951-03-01
Abstract: 715,685. Cold-cathode tubes. GENERAL ELECTRIC CO., Ltd. Feb. 29, 1952 [March 1, 1951], No. 5002/51. Class 39(1) [Also in Group XXXV] A cold-cathode gas-filled discharge tube, suitable for use as a voltage-breakdown device, comprises a glass cylinder 1 closed at each end by the sealing thereto of dished discs 2, of an iron-nickelcobalt alloy, which form the electrodes and may also act as the external terminals of the device, which has no exhaust tube. The length of the glass cylinder 1 is less than 1 cm. and its internal diameter is less than, but not less than one-half of, the length of the cylinder. The electrodes may be extended and brought close to one another outside the tube to form an external air spark gap in parallel with the discharge path in the tube. The filling comprises argon at a pressure of less than 100 mm. of mercury, this pressure and the internal spacing and external separation of the electrodes being such that the voltage difference required to cause a discharge to pass between the electrodes through the gas filling within the tube is less than the voltage difference which would be required to cause a discharge to pass between the electrodes outside the tube at normal atmosphere pressure. The discs 2 are washed in carbon tetrachloride and then heated in wet hydrogen for 10 minutes at 1050‹C before use, and the sealing operation is effected by placing the components on a platform in an enclosure provided externally with an eddy current heating coil. The enclosure is first exhausted and the components subjected to heating to effect degassing if so desired, after which the enclosure is filled with argon at 100 mm. pressure and the discs heated to redness for about 30 seconds to effect the sealing. A plurality of the devices may be placed in the enclosure and subjected to heating simultaneously or consecutively. The completed device is incorporated in a telephone line protective device (see Group XXXV) in place of the normal solid-type protectors. The Provisional Specification states that the discs 2 may be planar and made of chrome-iron, and the sealing enclosure may be filled with helium at a pressure of 700 mm. of mercury so that the final tube filling is helium at a pressure of 350 mm. of mercury.
Patent GB-736243-A (GB)
Title: Improvements in means for preventing the unauthorised removal of stoppers from bottles or the like containers
IPC: B65D55/14
Filed: 1953-02-23
Abstract: 736,243. Stoppers. KLUCKOW, V. H. Feb. 23, 1954 [Feb. 23, 1953], No. 5054/53. Class 125 (3). [Also in Group XXV] An expansible plug stopper with a rubber ring 12 compressed between a clamping member 13 and the head 11 of a screwed pin 10 has a locking device, with barrels 19 engaging a locking bar 20, to prevent rotation of the locking head 14 and prevent unauthorized removal of the stopper, the locking bar 20 being fixed to a catch plate 23 with a catch 18 which engages in one of the notches 16 on the head 14.
Patent GB-286642-A (GB)
Title: Improvements in feeding mechanisms for cinematographic films
IPC: G03B1/22
Filed: 1928-02-17
Abstract: 286,642. PathÚ CinÚma, Anciens Etablissements PathÚ FrÞres. March 7, 1927, [Convention date]. Kinematograph apparatus-In a claw feed mechanism comprising a claw-holder 7 moving to and from the film in a support carried by a vertically reciprocated frame 5, the support comprises a recess on the frame and has guide slots in its faces to receive a plate 15 for holding the claw-holder 7 in the recess. The plate 15 may be secured by two pairs of screws, the front screws 16 having partly cut heads to facilitate removal of the plate. A shaft 2, the axis of which passes through the centre line of the film, carries a cam 1 which reciprocates the frame 5 between guides 6, and also carries a cam 12 which engages between studs 10 on the claw holder 7 to slide it to and from the film and cause a claw or claws 9 to enter and leave the perforations. The shaft 2 also carries a shutter 13. In a modification, the holder 7 slides at an inclination to the horizontal, and carries claws which project horizontally, and, in a further modification, the studs 10 are removable for replacement after wear &c.
Patent GB-901353-A (GB)
Title: New or improved form of scaffold connector
IPC: E04G7/08
Filed: 1959-02-14
Abstract: 901,353. Scaffolding. BURTON, J. Feb. 4, 1960 [Feb. 14, 1959], No. 5204/59. Class 20 (2).  [Also in Group XXV] Scaffold connectors each comprising two clamps 1, 2 connected by a short length of tube 27 connect together scaffold frames 15 in pairs which are connected together by horizontal braces 19 and support scaffold boards 14. Short tubes 29 in tubes 27 support planks 30 in a recess 13 of the building. Specifications 507,411, 901,346 and 901,350 are referred to.
Patent GB-511540-A (GB)
Title: Improvements in and relating to the production of wool-like artificial fibres
IPC: D02G1/00
Filed: 1938-02-21
Abstract: 511,540. Artificial wool. COURTAULDS, Ltd., COTTERILL, E., and BOULTON, J. Feb. 21, 1938, No. 5473. [Class 15 (ii)] Artificial wool is produced by treating cellulosic artificial yarns or fibres with a waterproofing agent containing a fatty or other hydrocarbon radicle which forms a compound with the cellulose, and with a water-soluble intermediate condensation product of a heathardenable synthetic resin, drying and mechanically crimping or curling the material and heating to insolubilize the resin. A preferred water-proofing agent is that sold under the registered Trade Mark " Velan," a preferred resin is urea-formaldehyde resin. In an example, hanks of regenerated cellulose are soaked in a solution comprising a urea-formaldehyde precondensate, " Velan " and some ammonium sulphate, hydroextracted, dried, twisted to impart the desired crimp, heated for 3-5 mins. at 145-150‹C. and untwisted. If desired, the twist may be fixed by steaming before subjecting to the heat treatment.
Patent GB-212093-A (GB)
Title: Improvements in pulley blocks
IPC: F16H55/44
Filed: 1923-02-26
Abstract: 212,093. Ferguson, J. J., and Maguire, R. Feb. 26, 1923. Axle, frame, screw, and like pulleys.- Pulley frames of the type comprising one or more pulley wheels journaled in cheeks provided with means for attachment to a ceiling or wall, are constructed from a sheet of metal as shown in Fig. 1. Crescent-shaped orifices 2 are punched out on each side of the centre, and the cheeks are formed by folding the ends along the lines forming the bases of the crescents, so that the two axle holes 5 are in register. The holes 4<a> are then in laterally-extending flanges projecting beyond the cheeks and form alternative securing means to the central hole 4 which is provided specially for a coach screw for engaging a ceiling joint. Holes 4<b> are provided for use when the pulley is to be secured to a wall and holes 5 for the wheel axle.
Patent GB-752242-A (GB)
Title: Improvements in or relating to filters
IPC: B01D25/26
Filed: 1954-02-26
Abstract: 752,242. Filters. SEITZ-WERKE GES. Feb. 26, 1954 [Feb. 28, 1953], No. 5644/54. Class 46. In a filter including an assembly consisting of a plurality of superimposed plates between which filter layers are inserted, each filter plate has a groove-shaped trough on its periphery adapted to receive and centre a supporting ring, the supporting ring being recessed to receive a screen plate for the filter layer, which latter substantially covers the supporting ring. Circular units, of which two are shown, are compressed between an upper and a lower head in a casing, liquid to be filtered being admitted through openings in the bottom of the casing and in the lower head respectively. The liquid passes through holes 27 in the hub 25 of the upper unit into a space 19 below an imperforate plate 14 and flows downward through a disc 22 of filtering material on a perforate plate 16 of the lower unit. The filtrate passes out through apertures 24 in the lower (bevelled) edge of a ring 15 resting in a groove 23 in the plate 14 of the lower unit. The disc 22 and plate 16 are held in place by the hub 25a and the outer surface of the groove 23 of the plate 14 above them.
Patent GB-704004-A (GB)
Title: Improvements relating to precision casting by lost-wax process
Inventor: TURNBULL JOHN STRATTON
IPC: B22C1/16
Filed: 1951-03-09
Abstract: 704,004. Moulds. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Dec. 7, 1951 [March 9, 1951], No. 5755/51. Class 83 (1) In precision casting by the lost-wax process, an open mould of coarse refractory material is formed by investing a wax pattern having a general configuration similar to that of the final pattern 3, thus forming a cavity 2 slightly larger than the final pattern, drying the investment and removing the wax, placing the final pattern 3 in the cavity so formed, and filling the space between the pattern and cavity with investment 5 of fine refractory material to provide the accurate moulding cavity. The minimum distance between the pattern 3 and the cavity 2 is from # inch to # inch. The coarse material may be fire-brick, silica sand and silica flour with an ethyl silicate liquid bonding mix, and the fine material may be a slurry formed of 100 c.cs. of liquid bonding agent to one pound of dry mix of 40 per cent silica flour, 55 per cent silica sand and 5 per cent accelerator. After pouring the fine investment 5 some coarse material 6 is added above it and the mould is vibrated to cause the coarse particles to penetrate the fine material. The composite slurry is then dried, the wax melted out and the mould baked at 1000‹ C. The final wax pattern may be coated with fine refractory material before being invested.
Patent GB-565366-A (GB)
Title: Improvements in or relating to centrifugal fans and the like
IPC: F04D29/28
Filed: 1942-04-30
Abstract: 565,366. Centrifugal fans &c. CHESTER, T. April 30, 1942, No. 5805. [Class 110 (i)] In a centrifugal fan &c. the impeller has a parabolic &c. deflector 4 for directing the fluid from the inlet 5 to the shallow overhung blades 6 on the periphery of the impeller. The blades 6 are crescentshaped, as shown at 10 ... 13, Fig. 3, and are of greater axial length than radial depth. Their concave faces are in the direction of rotation, and the channel between successive pairs is convergent from the entrance and has a width, measured at half the radial depth, of twenty-five per cent or'more of the radial depth.
Patent GB-617593-A (GB)
Title: Improvements relating to processes and apparatus for high frequency surface hardening of steels
IPC: H05B6/04
Filed: 1945-03-08
Abstract: 617,593. Control systems for high frequency apparatus. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FILS. March 8, 1945, No. 5825. Convention date, Nov. 17, 1941. [Class 38 (iv)] [Also in Group II] Pieces of steel are surface hardened in a high frequency induction furnace in which the increase in intensity of the current passing through the coil consequent on the diminution of permeability of the steel is used to determine the instant of quenching, whereby the interruption of the heating current and the quenching occur simultaneously on the lapse of an adjustable period of time from the moment the current intensity has reached a given value. As shown, a piece of steel is held in a high frequency induction furnace l<SP>1</SP>, energized by a valve L, by an electromagnet M. The current traversing the coil of the furnace l<SP>1</SP> creates a potential at the terminals of an impedence Z which potential is rectified and the current applied to the grid of a thyratron Th, the plate of which is supplied through a relay Rs<SP>1</SP> with an alternating current. A variable voltage Pg is applied to the grid of the thyratron so that it will discharge and open the contacts O of the relay Rs<SP>1</SP> when the intensity of the current passing through the coil of the furnace l<SP>1</SP> reaches a predetermined value. The opening of the contacts O breaks the circuit through a multiple switch D, and condensers cd discharge through the coil of the switch in a definite time, depending on the value of the condensers and contacts l, m, and open, n causing the valve L to cease functioning and m the electromagnet to be de-energized and the piece of steel dropped into a quenching bath. An electromagnetically controlled jet of water may be used to the piece.
Patent GB-1008740-A (GB)
Title: Refrigeration unit
Inventor: HOYES WILLIAM ADLARD
IPC: H01L23/473
Filed: 1959-02-20
Abstract: 1,008,740. Refrigerating. MINISTER OF AVIATION and THE DE HAVILLAND AIRCRAFT CO. Ltd. Jan. 22, 1960 [Feb. 20, 1959], No. 5860/59. Heading F4H. A refrigeration unit for cooling for a limited period of time a semi-conductor detector of infra-red radiations comprises a cylindrical container 22 divided into two compartments 26, 27 by a diaphragm 25 and having a transfer tube 28 extending through the diaphragm. The tube 28 is open at its lower end in the compartment 27 and has its upper end secured to the top 23 of the container, a slot 29 in the tube permitting communication between the tube and the compartment 26. An exhaust tube 30 extends from the compartment 26 and leads to the exterior of an outer casing 10, the compartment being filled with a liquid-restrictive packing 38 of silica or glass wool. The detector (not shown) is mounted in thermal contact with the top 23 adjacent a transparent closure 14. To prepare for use the compartments 26, 27 are filled with liquid refrigerant (e.g. " Freon ", Registered Trade Mark), through an inlet pipe (Figs. 1, 2, 4, not shown) communicating with the compartment 27 and when the liquid emerges from the tube 30 the latter is sealed by a glass bulb (not shown), and the inlet pipe is then sealed. In use the bulb is broken and the refrigerant boils, the vapour escaping through the tube 30 and the top 23 is cooled for a limited time determined by the time taken for all the liquid to boil away. The packing 38 reduces the tendency for liquid refrigerant to be blown out of the tube 30. In a modification (Fig. 5, not shown) the tubes 28, 30 are in thermal contact with each other and both compartments 27, 28 are filled with packing. The space between the casing 10 and container 22 may be evacuated to thermally isolate the refrigeration unit.