baber/WOPTO huggingface dataset:
Patent GB-595601-A (GB)
Title: Improved method of making fine wire contacts for use in electrical apparatus
IPC: C10L5/14
Filed: 1944-07-20
Abstract: 595,601. Making electric contacts. WESTERN ELECTRIC CO., Inc. July 20, 1944, No. 13950. Convention date, March 16, 1943. [Class 83 (ii)] [Also in Groups XXXVI and XL] The end of a fine wire for use as an electrical contact member, e.g. in detectors or rectifiers for ultra high frequency radio &c., is given a desired form, e.g. by grinding, is electrolytically etched, and is then pressed against the member it is to remain in contact with, and preferably tapped, to flatten the point into a contact engaging area. A tungsten wire 0.005 inches in diameter, preferably gold plated, is given a conical end, 75-degrees apex angle by rotating it in contact with a high speed grinding wheel. The other end of the wire is then soldered to a holder 3 of brass or other conductor and the wire bent a number of times to give it resilience. A number of these holders 3 are mounted on a strip 4 and arranged with the ground points of the wires immersed in 25 per cent potassium hydroxide solution in a dish 5, Fig. 7. The dish is levelled by means of a tripod table 7 with adjusting screws 8, 9, 10 and the height of the solution 6 is regulated by altering the pressure in a flask 13, connected to the dish by a syphon, by means of a two-way valve 11, an air pump in the form of a rubber bulb 12, and an exhaust pipe 22. The dish 5 contains a cathode 15 and a potential difference of 0.80 volts, as registered by the meter 18 is applied for two seconds to etch the points to a spherical form, e.g. with a radius of 0.0003 inches. This etched form is then polished by applying 2 volts for 0.2 seconds twice. These times and voltages are obtained by use of the switch 16 and rheostat 14. The level of the electrolyte is then lowered, the strip 4 with its holders 3 is removed and the wires are washed and dried. A holder 3 is inserted in a plug 25, Fig. 8, which is screwed into a ceramic cylinder 23, the base of which is closed by a screw plug 24 carrying a wafer 27 of crystalline silicon. The holder is adjusted to exert enough force on the wire point to flatten it to a small finite area and is so secured by set screws 29. The device is then tapped so as to produce a flattened area of about 0.0003 inches in diameter. In modifications, the wire is ground or otherwise formed to a wedge, Fig. 11 or 13, instead of to a cone and then treated as described.
Patent GB-611794-A (GB)
Title: Improvement in adjustable fastening devices
IPC: A44B11/10
Filed: 1946-05-08
Abstract: 611,794. Buckles. PIONEER PARACHUTE CO., Inc. May 8. 1946, No. 13955. Convention date, July 9, 1945. [Class 43] A buckle 1, comprising a rectangular open frame 2 on two opposing sides 3, 4 of which a gripping member 9 slides, is characterized in that one end 6 of the frame is thicker than the sides and other end 5, thus providing on the underside of the buckle an offset or projection 8 with which a flat, roughened face 10 of the gripping member co-operates. The gripping member 9 may be in one piece which is placed diagonally within the frame 2 and then slid into position, or it may be in two parts secured together by rivets 14, Fig. 3; it projects above and below the frame 2. and recesses 15, 16 in its ends loosely receive the frame sides 3, 4 to permit limited rocking movement. One strap end 17 may be permanently secured to the frame end 5, while the other end 19 is adjustably fastened by passing it upwardly through the frame, round the friction member, and down through the frame again; when the strap is placed under tension it is gripped between the friction member and frame end 6, and the offset 8 bites into it with increasng force; the strap is released by rocking upwards the frame end 6. Alternatively the frame may have projecting from its end 6 either a hook or a loop for engagement with a fitting to which one end of a strap is permanently secured. In a modification, Fig. 6, the frame has a central crossbar 53, and friction gripping members 56, 58 slide in each of the spaces so formed, offsets 57, 59 being provided at each end 52, 51 of the frame.
Patent GB-218079-A (GB)
Title: Improvements in ploughs more especially intended for harvesting such crops as sugar-cane and roots
IPC: A01D45/10
Filed: 1923-05-28
Abstract: 218,079. Dijk, H. N. van. May 28, 1923. Balance ploughs with means for lifting up vegetation; travelling gear; adjusting and lifting parts, combinations and arrangements of tools.-An implement for harvesting or ploughing out sugarcane and root crops &c. comprises two long skids adapted to be drawn backwards and forwards by cables and windlasses and provided with means for raising the canes &c., and with a double plough adapted to be tilted about a traverse axis to raise one share out of work and lower the other for the return journey. The skids 1, 2 are cionnected together by a central sole-plate 3. The double plough is pivoted on a bolt 8 and is provided with screws 12 that engage the sole-plate when the corresponding share is lowered, and thus regulate the depth of work. The knife-plate 9 is provided with handles 13, 14 and can be locked in various positions by means of studs 15 passing through slots. When the plough is turned into an horizontal position with both shares out of the ground, it is held in that position by stops on spring-controlled levers 18, 19, one of which must be moved by hand before the plough can be put into operation. The canes &c. are lifted and guided by horns 6, 7 comprising upwardly and inwardly inclined bars 24 leading to horizontal bars 25 which end some distance in front of the shares. A movable cross-bar 28 is attached behind the plough to strengthen the frame. It is secured in bridge-pieces 26 by screws 27, and is moved to the other end of the frame at each head-land. A seat and a footplate may be provided. Two coulters 30 having sloping cutting-edges are mounted in front of each share. The implement is steered by turning the front coulters about vertical axes by means of levers 33 connected by rods 35 - - 38 to arms on rock shafts 41, 45 operated by hand-levers 42, 46, the rear coulters being held in mid-position by hinged catches 47, 48. The levers 42, 46 are mounted in such a way that the one not in use may be turned down clear of the crop. The lever in use may be locked in any position by means of a hinged rod 55 sliding through an eyebolt 59 provided with a clamping-nut 60.
Patent GB-163913-A (GB)
Title: Improvements in and relating to roll films for photographic purposes
IPC: G03C3/02
Filed: 1920-05-21
Abstract: 163,913. Thompson, W. P., (Gevaert & Co., L.). May 21, 1920. Roll-spools. - In a roll-spool, the film 1 is attached to the protecting wrapper 3 at one end 4 and at the other end, exposed last, is movably secured thereto by a tongue 5 threaded in a slot 6 in the wrapper. The back of the tongue may be prepared to receive an inscription, and to protect the sensitive surface of the tongue against the action of the developer the tongue may be covered with a layer of protective varnish or resin or an impervious label gummed to the film.
Patent GB-217248-A (GB)
IPC: H02P1/50
Filed: 1924-06-10
Abstract: 217,248. Siemens - Schuckertwerke Ges. June 9, 1923, [Convention date]. Alternating - current motors; exciting. - A three-phase motor 2 supplied from the circuit 1. is started as an induction motor by cutting out resistances 4, which are included in the circuit of its star-wound rotor 3, a switch 6 in one of the rotor phases remaining closed so as to short-circuit a shunt - wound machine 5. When the motor 2 reaches approxim te 1 y synchronous speed, the switch 6 is opened so that the machine 5 can excite itself and send continuous current into the rotor 3, causing the motor to run synchronously. The machine 5 can be driven separately or by the motor 2. The arrangement may be such that, by continued turning of the starting lever beyond the last starting resistance position, the short-circuit 6 will be opened by the breaking of a sliding contact, or the switch 6 could be operated automatically by means of centrifugal force after the motor has started.
Patent GB-291226-A (GB)
Title: Improvements in motor tractors
IPC: B60P3/00
Filed: 1927-05-25
Abstract: 291,226. Shepherd, J. N. K., and Sparks, J. Austin-. May 25, 1927. Tipping carts; vehicles with removable bodies. - A removable tipping body 13 is mounted on a tractor on pins 14 at the rear end of the frame, the pins being slidable in a tube 15 and pressed outwards to engage eyes on the body by a spring 17, so that by pressing the pins inwards the body can be freed from the frame. The pins can be locked in either their extended or retracted positions by means of studs engaging suitably shaped slots 19 in the tube.
Patent GB-317350-A (GB)
Title: Improvements in or relating to the coating of solid surfaces
IPC: C08L7/02
Filed: 1928-05-14
Abstract: 317,350. Dunlop Rubber Co., Ltd., and White, E. E. May 14, 1928. Plastic compositions containing indiarubber &c. and phenol- or ketone-aldehyde resins &c.-Hard coatings are formed on metal or other impermeable surfaces by coating the surfaces with aqueous dispersions containing synthetic resins, rubber or rubber-like substances and sulphur, and subjecting the coated surfaces to a heat treatment for example by heating in air for about four hours at about 150‹C. Partially-formed synthetic resins, such as phenol or ketone aldehyde resins in which the reaction between the ingredients is incomplete may be used. The dispersion may be formed in a colloid mill with addition of dispers. ing agents, if necessary. Natural or artificial dispersions of rubber, guttapercha, balata, rubber reclaim or waste, mineral rubber, or rubber substitutes, such as oils or vulcanized oils, may be used. The dispersions of rubber may be vulcanized before admixture or dispersions of vulcanite may be used. Fillers, accelerators, softeners, viscose, cellulose esters, or natural resins such as shellac may be added.
Patent GB-979194-A (GB)
Title: Improvements in or relating to screw extruders
IPC: B29C48/85
Filed: 1963-04-09
Abstract: 979,194. Screw extruders. REIFENHAUSER G.m.b.H. April 9, 1963 [May 10, 1962], No. 14129/63. Heading B5A. The tip 3 of a screw extruder is cooled independently of the helix proper 2 to cause a build-up of pressure in the material being advanced by the screw. Air and/or water are used as coolant, being supplied to the tip through an inner tube 4 and discharged through a concentric tube 5. An air space 9 insulates the helix proper from the coolant, though means for cooling the helix proper may be provided.
Patent GB-306768-A (GB)
Title: Improvements in the manufacture of suction dentures
IPC: A61C13/24
Filed: 1928-05-14
Abstract: 306,768. Heitm³ller, K. May 14, 1928. Teeth artificial.-The base b of a stud for securing a 'suction disc to a denture is formed with radial or concentric corrugations over its whole surface so as to obtain a firmer hold on the vulcanite plate. The stud is held in place. during the moulding operation by means of a former g, the neck of the stud being surrounded by a twopart lead insertion piece d, d<1> having a sharplybevelled edge f so that it may readily be removed after vulcanization.
Patent GB-599394-A (GB)
Title: Improved method of obtaining decorative effects on metallic surfaces
IPC: B44C1/22
Filed: 1945-06-06
Abstract: 599,394. Ornamenting metallic surfaces. WHITE, E. L. June 6, 1945, No. 14262. [Class 93] Metallic surfaces are ornamented by scouring the whole or part of the surface with pumice or other fine abrasive to produce a satin or matt background, applying to parts of the background a rotating scratch brush of the kind in which the ends of the bristles are in the same plane and applying acyclic or controlled movement to the brush relative to the article, and thereafter protecting the surface by applying thereto or producing therein a corrosionresisting surface layer. The background surface may also be produced by scoring or pitting, e.g., by means of sand-blasting or shotblasting. The brush may have bristles all of the same stiffness or several rows of bristles of different degrees of stiffness. The modified background surface may be protected against corrosion by the application of coats of clear and coloured varnishes, lacquers or synthetic transparent finishes, or by an electroplating process such as anodising.
Patent GB-1169391-A (GB)
Title: Improved Vehicle Steering Gear.
Inventor: ADAMS FREDERICK JOHN
IPC: B62D3/02
Filed: 1966-06-09
Abstract: 1,169,391. Steering vehicles. CAM GEARS (LUTON) Ltd. 9 June, 1967 [9 June, 1966], No. 14330/66. Heading B7H. [Also in Division F2] A vehicle steering mechanism includes a pinion 31, Fig. 3, on a steering shaft 1 meshing with a sector gear 32 on an output shaft 7 which is connected by articulated linkage to steerable road wheels. The shafts 1, 7 lie in parallel planes. Friction pads (9), (Fig. 1, not shown) spring-urged against both sides of the sector act as dampers. Two forms of power assistance are described. In Fig. 2, radial vanes 11 on the sector 8 bear against the walls of the cylindrical housing to define, with a fixed vane 12, two chambers into which pressure fluid is selectively admitted via ports 13 to apply a torque to the sector. Fluid admission is controlled by a valve responsive to torque on the steering shaft 1, e.g. of the types described in Specifications 1,034,349 or 1,149,174, the former being a valve having two coaxial valve members interconnected by torsionally resilient means and rotating with the shaft 1, while the latter comprises a valve responsive to the rocking of a lever due to the torque reaction between two shafts one of which drives the other, and one of which forms a fulcrum for the lever which is pivotally mounted on the other shaft. In Fig. 3, a double-acting hydraulic ram 35/36 acts on a rack 34 meshing a sector gear 33 secured on the shaft 7 adjacent the sector 32. In Fig. 4 (not shown), the shaft 7 carries a double-ended lever (56), each arm being connected by a drag link (55) and a steering arm 54A to a respective steerable road wheel 54.
Patent GB-611938-A (GB)
Title: Improvements in or relating to micro-wave and similar electrical resonant or reactive apparatus
IPC: H01P7/04
Filed: 1946-05-13
Abstract: 611,938. Electric resonators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 13, 1946, No. 14447. Convention date, Nov. 8, 1944. [Class 40 (viii)] In a cavity resonator of the coaxial or waveguide type, variation of tuning with temperature is prevented by enclosing in the resonator a gas whose dielectric constant decreases with temperature, the pressure of the gas being regulated to give the requisite rate of decrease. The gas may be HCl, H2S, SO2, COS or CO.
Patent GB-1005240-A (GB)
Title: New anthraquinone dyestuffs containing a quaternary ammonium group
Inventor: GAMLEN GEORGE ALBERT
IPC: C09B62/06
Filed: 1963-04-10
Abstract: The invention comprises dyestuffs which, in the form of their free acids, have the formula: <FORM:1005240/C4-C5/1> wherein R is an alkyl or chloroalkyl group of 1 to 3 carbon atoms, Y1 is hydrogen or an alkyl group of 1 to 4 carbon atoms, m and n are each 1 or 2, X is a divalent aromatic bridging group containing one or two benzene rings and which is substituted by at least one sulphonic acid group, R1 and R2 are each methyl and R3 is an unsubstituted or substituted aliphatic radical, or at least two of R1, R2 and R3 are joined or fused together to form with the quaternary nitrogen atom a heterocyclic ring or rings wherein the said nitrogen atom is linked to carbon atoms present in the said ring or rings through either single bonds or through a single bond and a double bond. The dyes are made by reacting an amine of the formula NR1R2R3 in an aqueous medium with a compound of the formula <FORM:1005240/C4-C5/2> Amines specified are trimethylamine, pyridine and 1:4-diazabicyclo-(2:2:2)-octane.  The dyes dye cellulose textile materials in conjunction with a treatment with an acid-binding agent in reddish-blue to green shades.
Patent GB-147331-A (GB)
Title: Improvements in or relating to driving-gear of the friction type
IPC: F16H13/02
Filed: 1919-06-06
Abstract: 147,331. Barker, G. June 6, 1919. Change-speed gearing; differential rotation of road wheels, permitting by slip of driving connexions. - Change-speed friction gearing drives two propeller shafts 27 differentially, and so may be used for steering a tractor or other vehicle. To each of the shafts 27 is jointed a swivelling shaft 20 carrying upon movable sleeves 21 stepped friction gears 22, 23, 24 adapted to gear respectively for forward driving with stepped gears 13, 14, 15 secured to a central driving- shaft 12. The forward ends of the shafts 20 are adapted to be thrust inwards towards the shaft 12 by toggles 40, and a yoke 50 is provided to distributo between these shafts the thrust of a spring 82 in a casing 80. The effect is that one of the shafts 20 is allowed to slip adjustably with respect to the other on each speed. The casing 80 turns vertically about a pivot 81, Fig. 2, so that the spring 82 can act with adjustable leverage through a pivoted link 70 and roller 71, Fig. 1. upon the yoke 50, which is movable laterally by the steering-gear to distribute the thrust unequally through links 43 to the toggles 40. The speed is varied by moving the sleeves 21 longitudinally in unison by anti-friction rollers 31. Reversed driving is effected through pairs of idle rollers 91, 92, Fig. 2, adapted to connect a friction gear 16 on the shaft 12 to the gears 24. When the gears 24 &c. are in their neutral position, the shafts 20 may be swung inwards to bring the gears 24 into engagement with pivoted spring-pressed brakeshoes 100 to allow of coasting.
Patent GB-474220-A (GB)
Title: Improvements in or relating to centrifugal switches
IPC: H01H35/10
Filed: 1937-05-25
Abstract: 474,220. Centrifugal switches. MASCHINENFABRIK OERLIKON. May 25, 1937, No. 14508. Convention date, June 23, 1936. [Class 38 (v)] A centrifugal switch, particularly for shortcircuiting starting resistances of an electric motor, comprises a contact carrying lever 1 pivoted between a knife edge bearing 4 and a similar bearing 7 on a compression spring 6 supported on a bearing 9 adjustable from the exterior of the casing. The lever 1 is of trough section and carries a contact ball 2 for engagement with a pair of fixed contacts in the speeded up condition illustrated, in which the spring 6 has almost reached its deadcentre position and so exerts little force.
Patent GB-1160751-A (GB)
Title: Improvements in and relating to Cross-Flow Fan Rotors
Inventor: BUSH EDMUND HELMUTH
IPC: F04D29/28
Filed: 1966-04-01
Abstract: 1,160,751. Transverse-flow fans. FIRTH CLEVELAND Ltd. May 4, 1967 [April 1, 1966], No.14513/66. Heading F1C. A transverse-flow fan rotor comprises a number of blades mounted in slots in rotor end discs and optional intermediate discs. Each blade 3 is curved and is slotted at 6 and/or 10 and/or 11 to engage over an edge of an associated disc slot 5 which is straight or has a curvature less than that of the blade and has an abutment 7 at its outer end. The slot 6 may be of channel form as shown, or it may be formed so as to provide an elongated opening through the blade, which opening may be engaged over a projection on the co-operating edge of the slot 5, this projection either replacing or assisting the abutment 7. The slots 5 may be curved to the curvature of the blades and closed at their radially outer ends and made longer than the blade width. The blades are then provided with slots 10 which are engaged over the radially outer edges of the slots 5, whereafter annular locking plates are secured to the faces of the end discs with their peripheries in abutment with the radially inner edges of the blades. Alternatively, the blades are slotted at 11 or at 10 and 11 so that after positioning the blades in the curved slots, the tabs existing between the slots 11 and the adjacent blade ends can be bent out of alignment with the curved slots. The locking plates then being arranged to abut the bent tabs. In a further alternative, the blades are slotted at 10 and 11 with the slot 11 offset from the slot 10 by one slot width towards the adjacent blade end, and the locking plates have slots or serrations across their periphery to receive the radially inner edges of the blades during assembly of the locking plates before rotation of the locking plates into interlocking engagement within the slots 11. The blades and discs may be secured together additionally by hot-tin dipping, plating, galvanizing, cellulose or plastics spraying, plastics dipping, stove enamelling, or an adhesive such as epoxy resin. The blades and discs may be coated before assembly, the assembled rotor being heated to fuse the coatings.
Patent GB-567027-A (GB)
Title: Improvements in or relating to grates
IPC: F23H7/00
Filed: 1943-09-06
Abstract: 567,027. Grates. SOUTH METROPOLITAN GAS CO., and FUIDGE, G. H. Sept. 6, 1943, No. 14533. [Class 126] In a grate for burning coke, fitted with an igniting burner, the bars are of firebrick reinforced by metal rods extending longitudinally through each firebar. The rods 3 extend beyond the ends of the firebars 4 and rest in slots 2 in front and rear supporting members 1 which are curved in plan. The bars are conical and radiate from a point formed by the intersection of the backwardly projected planes of the sides of the fireplace.
Patent GB-638777-A (GB)
Title: Improvements to vapour blast spray guns
IPC: B24C5/02
Filed: 1948-05-29
Abstract: 638,777. Spray-producers. McFARLANE, D. May 29, 1948, No. 14559. [Class 69 (iii)] A spray gun of the type in which abrasive fluid under pressure is mixed with a spraying medium such as air or steam, comprises a tube 4 axially supplied with low-pressure abrasive fluid surrounded by a hollow body 1 fed at 11 with spraying medium. The latter passes about the tube 4 and through ports 9 to the outlet.
Patent GB-1145373-A (GB)
Title: Phthaloyl-benzopyrrocoline derivatives
IPC: C08K5/34
Filed: 1966-04-01
Abstract: 1,145,373. Polystyrene/phthaloyl-benzopyrrocoline compositions. XEROX CORP. 1 April, 1966 [2 April, 1965], No. 14604/66. Heading C3P. [Also in Divisions B2 and C4] In Example XXXIII a mixture of 100 parts polystyrene and 30 parts of a yellow-orange pigment which is 1-cyano-2,3-(5<SP>1</SP>-amino)-phthaloyl-7,8-benzopyrrocoline of formula is prepared by milling the ingredients on hot rolls. The concentrate is removed from the rolls as a sheet, cooled, and ground to a powder. 2 Parts of the ground concentrate and 10 parts polystyrene are dissolved in 90 parts monomer styrene and the mixture is heated to polymerize the styrene. The resulting polystyrene contains a uniform distribution of pigment.
Patent GB-645459-A (GB)
Title: Improvements in folding boxes
IPC: B65D6/22
Filed: 1948-06-01
Abstract: 645,459. Folding boxes. MITCHELL, J. P. June 1, 1948, No. 14770. [Class 18] A folding box, comprising end walls hinged to the front wall and having its front and rear walls hinged to the bottom as described in Specification 589,312, has a hook-like tongue 6 on the free edge of each end wall 1 for engaging a plate 4 secured to and partly covering a recess 3 in the adjacent edge of the rear wall 2, the end walls also being provided with a pivoted catch 8 for engaging a slot 5 in the cover plate 4. Specifications 19357/07 and 203,404, [both in Class 18], also are referred to.
Patent GB-468874-A (GB)
Title: Improvements relating to profiling and dressing grinding wheels
IPC: B24B53/07
Filed: 1936-05-26
Abstract: 468,874. Trueing grinding wheels. LINDNER, H. May 26, 1936, No. 14828. Convention date, Dec. 30, 1935. [Classes 60 and 124] In the profiling and dressing of grinding- wheels, for example, for grinding screwthreads, by means of a steel roller having a profile corresponding to that of the work to be ground, and having transverse flutes or grooves, the particles broken away from the grinding-wheel are removed by the application to the point of contact of the roller and the wheel of a washing fluid consisting of a fatcontaining liquid, for example, oil. The liquid employed has the property of spreading rapidly over the surfaces of the particles.