baber/WOPTO huggingface dataset:
Patent GB-241046-A (GB)
Title: Improvements in and relating to hand-operated pressure lubricating devices
IPC: F16N3/12
Filed: 1924-12-09
Abstract: 241,046. Williams, W. H. Dec. 9, 1924. Piston apparatus for discharging receptacles.- In a lubricator of the kind comprising a cylinder and screw-operated piston b, the outlet end of the barrel communicates through a non-return valve o with a high pressure chamber m in which a membar s is axially movable to apply additional pressure to the lubricant. The member s passes through a stuffing-box q and is provided with means t for moving it axially. The barrel a may be filled' by removing the chamber m, connecting the open end of the barrel to a lubricant container, and withdrawing the piston. The nut engaging the piston rod is in two parts f adapted to be disengaged from the rod c by a spring-pressed wedge h when a cam ring g is turned to release the parts f. Specifications 235,276 and 241,013 are referred to.
Patent GB-603942-A (GB)
Title: Holder for razor blades
IPC: B26B5/00
Filed: 1945-11-06
Abstract: 603,942. Paper, fabric &c. cutters. DAHL, O. Nov. 6, 1945, No. 29550. Convention date, Feb. 10, 1943. [Class 31(ii)] [Also in Group XIV] A razor-blade holder for cutting paper, fabrics, etc., comprises a blade 5 which is gripped between a plate 6 extending from a handle 1 and a clamping-piece 7, and co-operates with an abutment 3 provided with a gap 15 increasing in width downwards from the edge for conducting away cuttings. The abutment 3 has the exterior sides facing from the blade rounded, and the portion in front of the blade edge 11 is provided with knurlings 12 which pass obliquely rearwards to stretch the fabric laterally. The portion at and behind the blade edge is provided with longitudinal knurlings 13 to guide the fabric past the edge 11.
Patent GB-1002945-A (GB)
Title: Improvements relating to the heat-treatment of metals
Inventor: COSLETT RONALD GEORGE
IPC: C21D1/70
Filed: 1963-07-25
Abstract: Ferrous alloys intended to be hot-worked, especially alloys containing chromium and/or nickel and/or cobalt are plated with copper, e.g. by chemical deposition from an acidified copper sulphate bath, and are then coated with a bentonite clay.ALSO:Ferrous alloys intended to be hot-worked are provided with a coating of copper followed by a coating of a bentonite clay, which may be an organophilic clay and may be applied by dipping.
Patent GB-894860-A (GB)
Title: Protective apparatus for a high frequency generator
Inventor: BARNES HERBERT ROY
IPC: H05B6/66
Filed: 1959-08-31
Abstract: 894,860. Protective cut-out arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 15, 1960 [Aug. 31, 1959], No. 29672/59. Class 38 (5). [Also in Groups XXXVI and XL (c)]  An arrangement for protecting a microwave frequency generator G comprises a directional coupler F provided in the output path from the generator and arranged to detect energy reflected back to the generator, e.g. in the absence of a load L formed by a strip of material to be heated, and a switch to reduce or cut-off the output from the generator when the reflected energy reaches a predetermined magnitude. The switch may be a relay having its operating coil 4 connected in series with thermistors T1, T2 in one limb of a Wheatstone bridge 3. A standing bias current i is applied to the bridge such that the thermistors have a resistance which just balances the bridge. The coupler F is connected to the waveguide wall by a resistor R and through a coaxial cable 2 to the junction between the thermistors, the outer conductor of the cable being connected between the waveguide wall and through capacitors C1, C2 to the outer terminals of the thermistors. The current produced in the coupler F by reflected energy flows through the thermistors in parallel and reduces their resistance value to cause operation of the relay. A meter M may be connected across the bridge to give a measure of the reflected energy.
Patent GB-192202-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H3/46
Filed: 1921-11-08
Abstract: 192,202. British Thomson - Houston Co., Ltd., (General Electric Co.). Nov. 8, 1921. Oil switches comprise an oil tank 10 with fixed contacts 14, 15 mounted in insulators on the cover 11, the operating member 17 carrying the bridging contact 16 and passing through the bottom of the tank and through a gland 20. The high pressures developed in the tank when the arc is drawn, assist the opening movement and closing pressure is eliminated. The cover is provided with a guide 21 for the upper end of the operating rod perforated to admit the pressure to the upper end of the operating rod. In a modified construction which eliminates closing pressure on the moving contact parts the upper end of the rod is carried through the cover and through a gland, the switch being operated from the upper end and the lower end passing through the gland, serving solely to prevent closing pressure on break.
Patent GB-846031-A (GB)
Title: Improvements in or relating to chain conveyors
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B65G23/14
Filed: 1957-09-21
Abstract: 846,031. Driving-apparatus for endless chain conveyers. FISHER & LUDLOW Ltd. Dec. 22, 1958 [Sept. 21, 1957], No. 29757/57. Class 78 (1). Apparatus for driving a conveyer chain 10 which comprises alternate double forged links 11 and single forged links 12 comprises two endless driving-chains 14, 25, the former carrying driving-dogs 19 for engagement with the double link 11 of the conveyer chain while the latter carries dogs 27 which engage and drive the dogs 19. Each of the chains 14, 25 is a flatlink chain having a pair of rollers 17, 28, respectively, carried by each of its pivot pins. The chain 14 comprises alternate double links 16 and single links 15, the lower portions of the dog 19 being adapted to straddle the latter links and being connected to the latter for limited relative longitudinal movement by a pin-and-slot connection 21, 22. Each of the dogs 19 comprises a tooth element 23, the forward face of which is adapted to engage the double conveyer chain link 11 while the rear face is stepped to accommodate the dogs 27 on the chain 25. The paths of the chain 14, 25 are so defined by respective guide rails 18, 29 that a dog 27 commences to engage a tooth 23 after the tooth 23 has engaged a link 11 of the conveyer chain, and moves out of engagement with the tooth 23 before the tooth 23 is disengaged from the conveyer chain. The pitch of the dogs 27 on the chain 25 is slightly greater than that of the teeth 23 on the chain 14 so that only one dog 27 is in engagement with a tooth 23 at any given time. Specification 805,449 is referred to.
Patent GB-1088985-A (GB)
Title: Improvements in or relating to castors
Inventor: BATTLIDGE FANK EDWIN
IPC: B60B33/00
Filed: 1963-07-29
Abstract: 1,088,985. Castors. BRITISH CASTORS Ltd. Oct. 21, 1964 [July 29, 1963], No. 29904/63. Heading A4U. [Also in Division B8] A self-aligning castor comprises a wheel fork 13 swivelably mounted on a stub shaft 18 carried by an attachment plate 15 and includes a first bearing 16 for receiving the working load and a second, smaller bearing 17 which supports the weight of the castor when the latter is lifted clear of the ground. The centre of gravity of the wheel and fork assembly is off-set from the swivel axis of the stub shaft 18. The attachment plate 15 may be secured to the pallet or other supported article such that the swivel axis is inclined to the vertical so that when the castor is raised it centres under its own weight. Alternatively, the swivel axis may be vertical in which case either the castor is spring urged to its aligned position or the supported article is tilted as it is raised thereby to tilt the swivel axis. The bearings 16, 17 may, as shown, comprise balls which bear on opposite sides of the top of the fork 13 or of the attachment plate 15.
Patent GB-691029-A (GB)
Title: Improvements in or relating to aircraft navigational aid apparatus
IPC: G01S1/02
Filed: 1949-03-15
Abstract: 691,029. Electric control systems. SPERRY CORPORATION. March 15, 1949 [March 16, 1948], No. 29915/51. Divided out of 690,985, [Group XXXIII]. Class 40 (i). In a navigational aid apparatus in which the pilot steers the aircraft according to the position of an indicator, the latter is responsive to the deviation of the craft from a predetermined altitude and also to the rate of change of this deviation which is measured by a pitch sensitive device. As shown, the usual cross-pointer meter 10 may, as described in Specification 690,985 [Group XXXIII] be used for blind landing or for crosscountry flights using a beam receiver 32. localized receiver 33, glide path receiver 55, magnetic compass 16 and vetrical gyro 23 from which turn and bank and pitch signals are derived. For cross-country flights which are to be made at a predetermined altitude the switch 47 is thrown to the left so that the horizontal pointer 12 is controlled by the altitude control 44 and the pitch control of the gyro vertical 23. the altitude control as described in Specification 663,913 produces an alternating voltage across potentiometer 45 whose magnitude and phase sense corresponds to the magnitude and sense of the aircraft deviation from the preset altitude. The pitch element of, the gyro vertical, by means of a telegon transmitter 50, also produces an alternating voltage across potentiometer 51 corresponding in magnitude and phase sense to the magnitude and sense of aircraft pitch. The latter signal is a measure of the rate of change of altitude and is added vectorially to the altitude control signal and fed to a demodulator 41 which feeds a corresponding unidirectional control voltage to the meter coil 15 actuating the horizontal pointer 12. The pilot steers the aircraft to keep the pointer 12 coincidental with the zero reference mark 13 to maintain the aircraft at the present altitude. Specification 638,971 also is referred to.
Patent GB-850089-A (GB)
Title: Improved apparatus for packaging articles
IPC: B65B53/02
Filed: 1957-09-24
Abstract: 850,089. Packaging machines. BROCK, H. W. Sept. 24, 1957 [Oct. 2, 1956], No. 29984/57. Class 94(1). A machine for carrying out the method described in Specification 850,090 comprises an intermittently-operated, endless conveyer 11, formed with apertures 14, for feeding a first web of thermoplastic material from a roll 15 under a reciprocable radiant heater 17 which softens successive sections of the web so that each section may be stretched by a reciprocating plunger 16 through the underlying aperture 14 into a female die 18 which is raised as the plunger is lowered. The moulding of the sections of the webs to the shape of the die may be assisted by suction applied through a pipe 19. The resulting series of flanged receptacles 20 are filled in succession with biscuits 21 or other articles and pass under a second web drawn from a roll 31, the second web being united to the flanges of each receptacle by a reciprocating heat-sealing device 23 while heat is simultaneously applied to the receptacle by a reciprocable, radiant heater 32 or jets of hot air to cause it to shrink into close contact with the enclosed articles. The device 23 includes an independently reciprocable, heat-sealing member 28 which is maintained in a raised position during the shrinking operation to provide a vent for the escape of air and is then lowered to complete the sealing of the receptacle. Completed packages 34a are severed from the webs by a knife 33 and passs down delivery rails 34.
Patent GB-176836-A (GB)
Title: Improvements in furnaces for producing chemical changes
IPC: B01J6/00
Filed: 1920-10-23
Abstract: 176,836. Woodall, Duckham, & Jones 1920), Ltd., and Duckham, Sir A. M. Oct. 23, 1920. Tunnel kilns are made in the form of a complete annulus, the materials being carried on a travelling platform and heated bv contact with combustion products or burnt by a current of air passing over them. The materials are charged into and discharged from the kiln through gastight devices, those described in Specification 176,834 being conveniently used. The kiln comprises vertical walls a supported by girders d on piers e, the space between the inner girders d being closed by plates f. At equiangular distances the plates f are provided with depending pockets g which contain supporting rollers h. A rack l is driven by a pinion, which arrangement may be similar to that described in Specification 176,834. The material is supported on the brickwork platform k. Gas ports are situated opposite the chimney flue c, and air ports close to the discharging device. The material, which travels in the opposite direction to the gases, thus preheats the combustion air.
Patent GB-460321-A (GB)
Title: Pistons
IPC: F02F3/02
Filed: 1935-10-31
Abstract: 460,321. Pistons. W. P. (LYMINGTON), Ltd., and HOWLETT, J. W. Oct. 31, 1935, No. 30070. [Class 122 (i)] In pistons of the kind described in Specifications 366,625 and 426,190, in which the skirt thrust faces are connected to the bosses by curved webs 17, the skirt being otherwise separated from the bosses and head which are connected by webs, the bosses terminate short of the cylindrical skirt which is provided with holes 19 only of sufficient diameter for the gudgeon pin to be inserted. Longitudinal slits 20 in the skirt pass through the holes 19.
Patent GB-621701-A (GB)
Title: Toys, puzzles and educational devices
IPC: A63F9/10
Filed: 1946-10-09
Abstract: 621,701. Puzzles ; toys ; pictures ; ornamenting. WILEY, T. G. H., and WATSON, H. K., (trading as WILEY DISPLAYS, T. G. H.). Oct. 9, 1946, No. 30088. [Classes 11, 93 and 132 (iii)] Toys, puzzles and educational devices of the type wherein two or more layers of transparent or semitransparent material, each having printed or otherwise arranged thereon a picture or design or a portion thereof so that on being superimposed the pictures or portions thereof are in register to produce a finished picture, are characterized in that any or all of the said layers are scored or indented so as to be broken up into a plurality of pieces. As shown, the layers A, B and C each differently coloured, are scored or indented along lines D. The sheets are broken along these lines to increase the difficulty of solving the puzzle. If desired, the sheets may be of coloured transparent material The layers on assembly may be supported in a box lid having a transparent window, and illuminating means provided inside the box to illuminate and shine through the respective layers. The pieces into which the layers are divided may be interlocking.
Patent GB-381364-A (GB)
Title: Improvements relating to hub caps for perambulators, invalid carriages, push chairs,or the like
IPC: B60B19/00
Filed: 1931-10-30
Abstract: 381,364. Vehicle wheels. WILSON J. W., Silver Cross Works, Whitehouse Street' Hunslet, Leeds. Oct. 30, 1931, No. 30104 [Class 144 (i).] A hub-cap 1 for perambulator and like wheels is fitted with a flange 2 adapted to cover the hubflange and the inner ends of the spokes. The flange 2 may be formed in one with the cap, may be welded thereto, or may be sprung into engagement with a groove in the cap.
Patent GB-1148388-A (GB)
Title: Static fluid tight seals
Inventor: HATHAWAY ROYSTON GEORGE WALTER
IPC: F16J15/12
Filed: 1965-07-15
Abstract: 1,148,388. Joint-making packing. BRITISH AIRCRAFT CORP. Ltd. 12 July, 1966 [15 July, 1965], No. 30110/65. Heading F2B. A gasket for use between opposed faces 18, 20, Fig. 2, of relatively static members 14, 16 comprises a ring 2 of rubber-like material with two opposite facings 4 of resilient metal, each facing being arcuate in cross-section with its concave face 6 exposed and providing two sealing edges 12, 13. The ring 2 may be of silicone rubber and the facings 4 may be of stainless steel.
Patent GB-1009378-A (GB)
Title: Production of soda ash
IPC: C01D7/12
Filed: 1962-08-07
Abstract: A process for the preparation of soda ash of consistent high quality from crude trona comprises calcining the crude trona to yield crude anhydrous soda ash, crushing, adding the crushed soda ash to saturated aqueous sodium carbonate solution whereby the soda ash dissolves and simultaneously hydrated sodium carbonate crystallises, classifying the crystals from the insoluble impurities and the mother liquor, recycling the mother liquor to the crystallization zone, and calcining the hydrated sodium carbonate crystals to yield high quality soda ash, which may be screened to remove fines which are recycled.
Patent GB-469799-A (GB)
Title: A method and device for improving combustion of coal of low calorific value
IPC: C10B27/00
Filed: 1935-11-01
Abstract: 469,799. Recirculating combustion products in furnaces. ESKE, F., and SCHEPERS, C. A. Nov. 1, 1935, No. 30250. Convention date, Nov. 1, 1934. [Class 51 (i)] In a furnace more particularly for burning low grade fuel, rich gases are collected from immediately above the fuel bed by means of tubes 3 and are conducted without contacting with the heat discharging walls of the furnace into a mixing chamber 5 where they are mixed with gases taken from the flue and are then returned to beneath the grate. The flue gases are withdrawn from outlets 14 in the sides of the combustion chamber 1 intermediate the grate and the top of the fuel bed and pass, as shown by the arrows in Fig. 2, into a flue 15 from which some pass upwardly through a collector 4 into the mixing chamber. The gases may be withdrawn and recirculated by the action of a fan 6 or when slow combustion is required the circulation is effected under the influence of chimney suction alone. The flue, rich gas collector and flue gas collector are: controlled by dampers 10, 17 and 18 respectively.
Patent GB-376139-A (GB)
Title: Improvements in power-transmission mechanism for motor-driven lawn-mowers
IPC: A01D34/47
Filed: 1931-11-02
Abstract: 376,139. Lawn-mowers. ENFIELD CYCLE CO., Ltd. and SMITH, F. W., of Enfield Works, Hewell Road, Redditch. Nov. 2, 1931, No. 30277. [Class 6 (ii).] In power transmission mechanism for motor lawn-mowers wherein a main shaft b of an internal-combustion engine a is disposed in axial alignment with a transmission shaft c, and is connected thereto by epicyclic gearing contained in a rotatable housing associated with a friction clutch, the sun wheel f is formed on a reduced extension e of the shaft b, and the inner end of the shaft c is formed with an axial socket j adapted to accommodate the end of the extension e, so that the shaft b forms a bearing for the inner end of the shaft c. The shaft c is formed with a terminal flange i carrying bearing pins h for the planet wheels g. The rotatable housing consists of two cupshaped members p, s, bolted together, the inner member p having integral therewith an internally-toothed annular wheel n engaging the planet wheels. The housing is held against rotation so that the drive is transmitted to the shaft c, by two semicircular friction bands u pivoted at v and forced together by springs, being adapted to be forced apart to release the housing by a cam operated by a lever z<1>. The friction bands may be retained in position by an annular plate s<1> secured to the members. The shaft c is mounted in bearings in the side frame, and carries a pinion m for a chain or other drive to the mower.
Patent GB-305966-A (GB)
Title: Improvements in frames for bedsteads, cots, hospital trollies, hospital food wagons and analogous structures
IPC: F16B12/40
Filed: 1927-11-12
Abstract: 305,966. Evans, R. Y. K. Nesbit-. Nov. 12, 1927. Hand-trollies.-In frames for hospital trollies &c. horizontal tubular members g are connected to vertical members a by being passed over permanently-mounted projections d whose slotted ends are expanded by drawing in tapered wedges e with lugs e<2> engaging the slots to prevent rotation. Specification 23738/97, [Class 136, Velocipedes], is referred to.
Patent GB-727013-A (GB)
Title: An improved process for the extraction of mannitol, laminarin and alginic acid from seaweed
Inventor: BLACK WILLIAM AIRD PEDEN
IPC: C08B37/12
Filed: 1949-11-28
Abstract: Mannitol is extracted from seaweed by a process comprising treating seaweed with a solvent which dissolves mannitol, inorganic salts and laminarin, separating the seaweed residue and laminarin from the solution, evaporating the remaining solution to dryness under reduced pressure to leave a mixture of mannitol and inorganic salts, converting the mannitol of the mixture into a water-insoluble compound of mannitol by methods known to be capable of converting alcohols into acetals, ketals or esters, washing with water to remove salts and recovering mannitol from said compound of mannitol.  When a dilute mineral acid is employed as solvent the seaweed residue is treated with a basic solution to recover alginic acid and laminarin is precipitated from the acidic solution by the addition of alcohol. The solution is neutralized and evaporated under reduced pressure to leave a mixture of mannitol and salts the mannitol in which is converted into a water-insoluble organic compound such as the acetal, ketal or ester by treatment with the appropriate aliphatic aldehyde, ketone or acid anhydride.  The insoluble compound is then freed from salts by washing with water.  The insoluble compound may be decomposed, e.g. by hydrolysis by means of dilute acid.  The alginic acid may be recovered from the seaweed residue by treatment with hydroxide or alkali metal carbonate in known manner.  Seaweeds mentioned are L. cloustoni, L. digitata and L. saccharina.  In examples: L. cloustoni fronds are extracted with dilute hydrochloric acid in the presence of formalin.  The weed residue is removed and after standing laminarin is deposited and is removed.  The solution is then neutralized with caustic soda and evaporated under reduced pressure and alcohol is added to the viscous solution to precipitate further laminarin, fucoidin and salts which are removed.  The solution is evaporated to dryness under reduced pressure.  A portion of the mixture of mannitol and salts is added to hydrochloric acid and paraldehyde to form triethylidene mannitol which is filtered and washed with water (1); a further portion is treated with anhydrous acetone and sulphuric acid and the mixture is neutralized and evaporated under reduced pressure to give triacetone mannitol (2); and a further portion of the mixture obtained in (1) is heated with acetic anhydride and sodium acetate to obtain the hexa-acetate.
Patent GB-1160554-A (GB)
Title: Process for Creating an Image on a Bimetal Lithographic Plate by Electrolytic Removal of Metal
Inventor: WILLIAMS PATRICK DAVID JAMES
IPC: G03F7/40
Filed: 1965-07-16
Abstract: 1,160,554. Electrolytic etching. PRINTING TECHNIQUES Ltd. July 8, 1966 [July 16, 1965], No.30414/65. Heading C7B. [Also in Division G2] A method of forming an imaged bi-metal litho plate comprises coating the bi-metal plate with an electrically non-conductive photo-resist, exposing and developing the resist, making the plate anodic by electrical contact, bringing the top layer of the plate into proximity with a cathode from which it is separated only by a very thin (1 to 10 mils) membrane of a non-conducting porous material carrying an electrolyte so as to remove the unprotected areas of the top layer, and finally removing the resist. Typically the bi-metal plate having a base layer 8 of chromium and a top layer 7 is passed between an anodic roller 6 and a cathodic roller 1 covered by fabric 2 and partially immersed in electrolyte 3 in a tank 4. Alternatively the plate is fed between such rollers without immersion together with a paper or fabric sheet impregnated with an electrolyte and moistened via a damping roller from a supply tank Fig. 2 (not shown). In another form anoidic connection is made to the bi-metal plate which is fed through an electrolyte solution with its top layer contacting such an impregnated sheet between a lower non- conductive roller and an upper cathodic roller. If desired the membrane may itself include the photo-sensitive resist material, thereby obviating the need for application to and removal from the plate of the resist. Reference is also made to using as a membrane a mechanically cut stencil. As shown in Fig. 1, a cathode 5 may be provided with the bath to scavenge metal salts formed by anodic dissolution within the fabric 2.