baber/WOPTO huggingface dataset:
Patent GB-689272-A (GB)
Title: Improvements connected with the mounting of chasers for cutting screw threads
IPC: B23G5/10
Filed: 1950-12-15
Abstract: 689,272. Screwing die-heads. FAIRWEATHER, H. G. C. (National Acme Co). Dec. 15, 1950, No. 30703/50. Class 83 (iii). In a screwing die-head, each of the chaser holders 10 is mounted on a slide 15 by a tongue- and-groove connection 44, 45 and is secured in position by a bolt 16 passing through an opening 48 in the holder and threaded into the slide at an angle other than 90 degrees to the surface of the slide, the bolt having wedging engagement with a shoulder 49, Fig. 11, in the chaser holder. If the chaser holder is mounted on the slide before the latter is mounted in the die head, the chaser is positioned with respect to the slide by a slotted gauge 55, Fig. 14, having micrometer points 56, 57 for engaging the chaser. Each chaser holder is provided with a chaser-receiving groove 20 and the holder and chaser are provided respectively with openings 24, 25 and 28, 29 extending transversely of the groove, the distance between the axes of the openings 28, 29 being different from that between the axes of the openings 24, 25 and a fastening screw 12 and set screw 13 extending respectively through the pairs of openings 24, 28 and 25, 29 to exert opposing forces 40, 41, Fig. 7, on the chaser. The distance between the openings 28, 29 and the back surface 26 of the chaser is different from the distance between the openings 24, 25 and the bottom wall 23 of the groove 20. The openings 28, 29 have tapered portions 30, 31 engaged by shoulders 32, 33 on the screws.
Patent GB-303964-A (GB)
Title: Improvements in signs for vehicles, particularly taxicabs
IPC: G09F21/04
Filed: 1927-11-15
Abstract: 303,964. Peters, J. A. Nov. 15, 1927. Taximeter flag mechanism.-A " for hire " sign for taxicabs or other vehicles is of the reflector type. In one form, Fig. 1, the flag is connected with a. rotatable box A on the canopy of the cab, this box containing a semi-transparent mirror and the words " for hire " in stencil and " engaged " on the opaque side. Electric lamps may be arranged' inside the box for illuminating the sign when desired or the mirror may be adjustable to reflect daylight or artificial light alternatively according to requirements. In another form, Fig. 2, the sign is stationary and a shutter K is operated by a separate control lever R. The sign may show to the front and rear and for this purpose may comprise a pair of plates disposed at an angle and serving as both mirrors and transparent stencils.
Patent GB-1178986-A (GB)
Title: Improvements in rotary bollards
IPC: B66D1/74
Filed: 1967-07-04
Abstract: 1,178,986. Rotary bollards. PUSNES MEKANISKE VERKSTED A.S. 4 July, 1967 [5 July, 19661, No. 30734/67. Heading B8B. Each drum 11 of a double drum rotary bollard includes a ratchet and brake mechanism which allows free rotation in one direction and locks against rotation in the other direction until the torque exerted on the bollard by a hawser wrapped therearound exceeds that to which the brake mechanism is set, the ratchet and brake being releasable for free rotation of the bollard in said other direction. The drum 11 provided with hawser and grooves 17, is rotatably mounted on a stationary shaft 7 and carries spring-biased pawls 1 which engage a ratchet wheel 2 mounted between brake discs 3, 4 rotationally fixed relative to the shaft 7. The braking effect of the discs on the ratchet wheel is adjustable by compressing a spring 8 via a nut 9 threaded on the rod of a piston 10. The latter may be raised by hydraulic, pneumatic, electromagnetic or mechanical means to completely release the brake. Spring- biased clamps are provided to hold the unloaded end portion of the hawser, against the bollard drum.
Patent GB-1067249-A (GB)
Title: Improvements in or relating to guanidines
IPC: C07D295/088
Filed: 1964-08-04
Abstract: The invention comprises compounds of the formula <FORM:1067249/C2/1> wherein RRN- is di-(C1- 8 alkyl)-amino, 1-aziridinyl, 1-azetidinyl, 1-pyrrolidinyl, piperidino, 1-hexahydroazepinyl, heptamethyleneimino, octamethyleneimino, morpholino or thiomorpholino, each of the heterocyclic radicals having attached as substituents on carbon atoms thereof 0 to 3 C1- 8 alkyl groups, and acid addition salts thereof, and their preparation by reacting 2 - methyl-2 - thiopseudourea sulphate with a compound of the Formula: RRN-CH2-CH2-O-NH2 and, if desired, converting the sulphate salt obtained into the free base or converting the free base into other acid addition salts, e.g. salts with penicillin.
Patent GB-262771-A (GB)
Title: Audion tube
IPC: H01J19/30
Filed: 1926-12-06
Abstract: 262,771. Loewe, S., and Rothe, H. Dec. 10, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Vacuum tubes.-In audion tubes for rectifying or amplifying, the grid condenser and grid leak are replaced by a semi-conducting coating on the control or other electrodes to produce a suitable potential on the electrode surface facing the discharge space. The coating may comprise an insulating material such as varnish or water-glass mixed with atomized. dissolved or finely distributed conducting material such as graphite or metal and may be applied to the control electrode only at those places struck by electrons. The conductivity of the coating is chosen so that, when the control electrode is connected to the positive terminal of the cathode battery, the grid current produces a voltage drop in the coating and so maintains a potential giving good rectification, whilst, when the control electrode is connected to the negative terminal, there is pure amplification. The resistance of the coating may be greater than that of the usual grid leak. A metallic coating produced, for example, by spraying magnesium may be applied over the semiconducting coating. When the cathode comprises a material such as calcium oxide or thoriated tungsten, the contact potentials of the electrode materials produce the effect of a negative grid bias by giving the magnesium coating a negative potential relatively to the cathode.
Patent GB-1509972-A (GB)
Title: Thermoplastic resin composition
IPC: C08L51/00
Filed: 1975-07-23
Abstract: 1509972 Thermoplastic resin compositions SUMITOMO CHEMICAL CO Ltd 23 July 1975 [23 July 1974] 30849/75 Heading C3M Thermoplastic resin compositions comprise (1) a styrene/butadiene block copolymer and (2) a liquid butadiene polymer. The block copolymer may be of form A1B1CB2A2 where A1 and A2 are polystyrene blocks, B1 and B2 are elastomeric blocks of styrene/butadiene copolymer containing 10 to 75 weight per cent styrene, C is a polybutadeine block or styrene/ butadiene copolymer block containing up to 10 weight per cent of styrene, A1 and A2 constitute 40 to 80%, B1 and B2 constitute 10 to 60% and C constitutes 0 to 25% of the copolymer, the ratio A1 : A2 is 2 : 8 to 8 : 2, the ratio B1 : B2 is 0 : 10 to 10 : 0, the total styrene content of copolymer is 65 to 90 weight per cent and the copolymer having an intrinisic viscosity of 0À35 to 1À8 dl./g. (in toluene at 30‹ C.). The liquid polymer may be a polybutadiene, butadiene/ sytrene copolymer or a derivative thereof containing up to 20 weight per cent of maleic anhydride or epoxidized with an organic peracid. The compositions may also contain plasticizers, and are resistant to flexural stress clouding.
Patent GB-1199689-A (GB)
Title: Improvements in or relating to the Control of Disc Clutches
IPC: F16D13/46
Filed: 1968-06-28
Abstract: 1,199,689. Controlling clutches. SKF COMPAGNIE D'APPLICATIONS MECANIQUES. 28 June, 1968 [29 June, 1967], No. 30908/68. Heading F2L. Disengagement of a motor vehicle spring- applied friction clutch 1a is effected without exerting axial forces on the driving and driven shafts by forming the presser-plate 5a fast with one (the inner) race 13 of a deeply-grooved ballbearing, and forming a cover 22, fast with the flywheel 4, fast with one (the inner), race 23 of a second deeply-grooved ball-bearing, the disengaging force being exerted on the other (outer) race 12 of the first ball-bearing and reacting on the other race 37 of the second ball-bearing. As shown, the outer races are fast with sleeves 30, 31 formed respectively with an annular piston 32 and cylinder 33 operated by hydraulic pressure through bores 34 to force the pressureplate 5a to the left against an annular spring 27. The disengaging force may be pneumatic, mechanical, or electromagnetic. Again, Fig. 2 (not shown), the cover and preaser-plate are mounted on the outer races and the disengaging force acts between the inner races to urge them together. Helical springs replace the annular spring.
Patent GB-262595-A (GB)
Title: Improvements in or relating to mixing machines
IPC: B28C5/18
Filed: 1925-12-08
Abstract: 262,595. Ayre, J. D., and Ransome Machinery Co. (1920), Ltd. Dec. 8, 1925. Rotary mixers.-A concrete &c. mixed of the rotary, tilting drum type is provided with independent stirrers which may rotate in the same direction as the drum but at a different speed, or in the opposite direction. The drum 1, supported on a yoke 5, rotates on a central bearing 6 through which passes a shaft 7 on which are mounted arms 9 fitted with mixing blades 10. The shaft is rotated through bevel and chain gears 11 - - 14 from the shaft 15 which rotates the drum. The arms are curved and of different lengths.
Patent GB-784718-A (GB)
Title: A new or improved spare-wheel carrier for motor road vehicles
IPC: B62D43/04
Filed: 1954-10-27
Abstract: 784,718. Spare wheel carriers. CROWE, M. F., and CALLOW, D. M. Oct. 27, 1955 [Oct. 27, 1954], No. 31019/54. Class 136(1) A spare wheel 4 for motor road vehicles is received in a dished housing 1 hingedly mounted beneath a luggage boot 7. The housing has a flanged rim 2 to which is attached a resilient facing ring 3. A bar 8 is secured to the base of the housing 1 and is provided at its ends with lugs 9, 10. The lug 10 has a hooked portion 11 formed with a longitudinal slot 12. The housing 1 is hingedly carried beneath the vehicle boot 7 by means of a headed bolt 13. The bolt is fitted with a clamping nut 15 and washers 16. This hinge mounting enables the housing 1 to be swung down from the closed position shown in Fig. 1 to a position in which it slopes down to afford access for removing the wheel from the housing. For fastening the housing in the closed position there is a bolt 17 having an eye-shaped head 18 which serves to receive the lug 9 of the wheel carrier. The bolt 17 passes through a hole in the floor 6, its shank portion above the floor being fitted with a wing nut 19 and a washer 20. The wing nut 19 can only be operated when the boot 7 is open. This prevents an unauthorized person from opening the housing 1. When it is required to remove the spare wheel from the housing 1 the wing nut 19 is slackened to allow the bolt 17 to descend and to swing angularly, as shown in Fig. 5, to release the bolt head 18 from the lug 9. The housing is thus free to be swung down about the pivot 14 for removal of the wheel 4. In a modification the bolt 17 is joined intermediately of its length for angular displacement of the lower portion alone. The joint passes up into a sleeve extending downwardly from the floor 6 so that movement of the joint cannot take place in the normal uppermost position of the bolt.
Patent GB-753520-A (GB)
Title: Improvements in and relating to splined clutches
Inventor: HUGHES JOHN OLIVER PHILIP
IPC: F16D11/10
Filed: 1953-11-11
Abstract: 753,520. Positive clutches. ENGLISH ELECTRIC CO., Ltd. Nov. 5, 1954 [Nov. 11, 1953], No. 31213/53. Class 80(2) In a clutch wherein a shaft 1, Fig. 1, is moved axially to engage splines 1a with chamfered ends lb, between splines 3a with chamfered ends 3b in a member 3, a ring 2, mounted for limited axial and angular movement within a housing 4 secured to member 3 but normally in its left-hand position shown with internal splines 2a having chamfered ends 2b in alignment with the splines 3a, has a pair of diamondshaped projections 2e each of which cooperates with opposed recesses 3e, 4e in the members 3, 4 offset by half the spline pitch and with the chamfered ends of a pair of spring-loaded segments 5, Fig. 3. The arrangement is such that if, when engagement is attempted, the splines 1a abut. against the splines 2a, as in Figs. 4a, 5a, the ring 2 is moved to the right, the projections 2e forcing apart the segments 5 until their springs 6 impel the ring further to the right and turn the same during the process due to the offset recesses 3e so that the splines 1a are now guided between the splines 2a, as in Figs. 4c, 5c, and eventually between the splines 3a, the necessary relative angular movement between the parts 1, 3 being produced by the chamfered ends 1b, 3b. As the engagement is completed, the splines 1a having passed completely through the ring 2, the latter returns to its Fig. 5c position so that, on disengagement the splines 1a abut against the splines 2a to re-set the ring 2 in its Figs. 4a, 5a position. Specification 691,413 is referred to.
Patent GB-474862-A (GB)
Title: Safety device for aircraft
IPC: B64D25/12
Filed: 1936-11-16
Abstract: 474,862. Safety devices for aircraft. VOICIECHAUSKIS, B. Nov. 16, 1936, No. 31238. [Class 4] A safety device for aircraft comprises a passenger seat capable of being ejected or pushed by means of an upright rail or rails out of the aircraft cabin either through its floor or ceiling when enclosed in a box or a boat. In one form, release of a spring- pressed catch on pulling a cord 10, Fig. 10, allows the upper part of a bar to descend on guide rail 13 under the action of a spring 11. Pins 9 on the upper part 1 engage spring- pressed catches 23, Fig. 3, held in place by catches 26. Engagement of the pin 9 with a spring-pressed plunger 28 provided with a stop 31 actuates through a cord 29, provided with an automatically detachable joint 17, Fig. 1, a resilient device 18 to eject the box. The box is provided with a door having a window 4, a parachute 5 adapted to be expanded by a pull on a cord 6 coiled in a case 7 and a vent which prevents ingress of water. A spring-pressed catch is provided for detaching the parachute. In a modification, a guided seat attached to the bottom plating is ejected and in this case the upper part, together with part of the rail, is removed. In a further modification, a box or a series of boxes for carrying mails, luggage, provisions, &c. each provided with a parachute are arranged on the rail and in the case of a series of boxes a pilot-actuated catch is provided for releasing one box at a time. In a still further modification, the box is formed with a telescopic upper portion. The parachute may be detached by a catch operated by a rubber diaphragm on which acts water pressure when the box has fallen in the water. The box may be provided with floats filled with gas and surrounded by a net connected by ropes to the aircraft sunk in the water. Specification 399,332 is referred to.
Patent GB-189133-A (GB)
Title: Improvements in and relating to bottle closures
IPC: B65D41/12
Filed: 1922-11-15
Abstract: 189,133. Hela Verkaufsges. Nov. 15, 1921, [Convention date]. Making packing discs; materials, special, for packing-discs.-A seal for producing a tight joint between the mouth of a receptacle and a closure placed thereon comprises a stiff disc of a fibrous vegetable material, such as cardboard, of loose texture, and an elastic air-tight skin of caoutchouc attached to one or both sides of the disc. To form the seal, a strip 2 of cardboard is taken from a roller 1, coated with adhesive from a trough 6 and passed, in conjunction with a strip 8 of caoutchouc from a roller 7, between rollers 9, 10 which press the two strips together. The seals are then stamped from the composite strip by a die 11. If soft caoutchouc is employed, the adhesive is dispensed with, the rollers 9, 10 being heated to cause the caoutchouc to adhere to the cardboard. In the Specification as open to inspection under Sect. 91 (3) (a) it is stated that the caoutchouc is made chemically indifferent by treating it with carbonic acid or radium. This subject-matter does not appear in the Specification as accepted.
Patent GB-1060338-A (GB)
Title: Method and apparatus for making an aerofoil-shaped blade
Inventor: ECCLES GEORGE EDWARD
IPC: B21K3/04
Filed: 1965-07-22
Abstract: 1,060,338. Making aerofoil blades; forging. ROLLS-ROYCE Ltd. July 22, 1965, No. 31347/65. Headings B3A and B3H. In the manufacture of an aerofoil blade having a portion 11 and an integral clapper portion 12, 13, Fig. 6 (not shown), a blade is first produced having a finished forged blade portion and a roughly forged clapper portion, Fig. 5 (not shown), and the latter is then finish forged without affecting the blade portion, in a split die having parts 35, 36, Fig. 8 (not shown), which are movable both longitudinal and transversely of the blade. A slug 14, Fig. 1 (not shown) of titanium or nickel base alloy is first extruded, Fig. 2 (not shown), then heated locally and upset at 20, Fig. 3 (not shown), by impact. The upset portion 20 is then preliminary forged into opposite stubs 22, 23, Fig. 4 (not shown), and the entire workpiece then forged between split die parts to finish the blade portion 11, roughly forge the clappers 12, 13 and provide locating end portions 24, 25, Fig. 5 (not shown). The blade is inserted in a split clamp 30, 31 with the pre-forged clappers located between lower die parts 35, 36 and replaceable upper die parts 40, 41. Die parts 35, 36 biased by springs 44, are mounted to move longitudinally of the blade by ram 43 to finish forge the clappers during which the die parts move apart transversely. Grooves such as 46, Fig. 9 (not shown), are provided in the clamp 30, 31 and in the die parts 35, 36 to receive flash. Thereafter the flash is removed, the root portion is machined and the end portions 24, 25 are removed.
Patent GB-520739-A (GB)
Title: Improvements in or relating to polyphase electric transformers
IPC: H02M7/06
Filed: 1938-10-29
Abstract: 520,739. Phase changing. PATENTVERWERTUNGS-GES. HERMES. Oct. 29, 1938, No. 31350. Convention date, Oct. 30, 1937, [Class, 38 (ii)] In an arrangement of polyphase transformers for increasing the number of phases, for example for feeding a 24-phase rectifier, the windings of the two transformers E, F, Fig. 4, forming the polyphase system are so arranged that at least two of the secondary voltages following one another in phase sequence are obtained from the same transformer. The transformers E, F have star and delta connected primary windings respectively and the zig-zag connected secondary windings of each comprise 12-phase arrangements each formed of two 6-phase systems differing in phase by 15 degrees so that the secondary voltages shown in Fig. 3 are obtained. In another arrangement the secondary windings of the transformers G, H, Fig. 5, having star and delta connected primaries respectively, are formed of systems of 6-phase windings without zig-zag connections. Phase displacement of the voltages of the individual secondary windings is then obtained by adding thereto voltages in quadrature derived from separate transformers K, L. The primary windings of the transformers K, L, may be energized by connection to either the primary or secondary windings of the associated main transformers G, H.
Patent GB-428293-A (GB)
Title: Arrangements for use in electric signalling systems
IPC: H03C1/58
Filed: 1933-11-10
Abstract: 428,293. Modulating and demodulating circuits. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Cowan, F. A., and Caruthers, R. S.) Nov.- 10, 1933, Nos. 31383 and 31384. Convention dates, Nov. 25, 1932 and Dec. 1, 1932. [Class 40 (v)] A modulating or demodulating arrangement comprises a bridge of rectifiers or other non- linear resistances to which a carrier wave is applied together with the modulating signals or modulated wave as the case may be. Two arrangements comprise third-order modulation. In the arrangement shown in Fig. 1, a source of carrier frequency 17 is applied through transformer 21 across one diagonal of the bridge 11 .. 14, the other diagonal of which is across the line connecting the modulating source 24 and filter FV to the output filter FSB which passes a single side band. The bridge is balanced for the carrier source so that the carrier is suppressed in the output, but modulating signals unbalance the bridge in accordance with their amplitude and sign. The biassing voltage 20 is such that the direction of currentflow through the rectifiers or resistances 11 .. 14 is always the same. When rectifiers are used the bridge may be regarded as intermittently short-circuiting the line at carrier frequency. The carrier source may be directly connected across the bridge, transformer 21 being omitted. In the modification shown in Fig. 4, the bridge is arranged in series in the line, resistance 22 forming a self-biassing device. In the further modification shown in Fig. 5, the carrier source 17 and modulating signals from 24 are connected to the same terminals 18, 19 through suitable filters FC, FV. The carrier passes through rectifiers 11, 14 and 12, 13 in alternate half cycles so that the resistances of these pairs are alternately reduced, with the result that the direction of signal-current flow in the output is reversed at carrier frequency. Third-order modulation is provided for in the arrangements shown in Figs. 7 and 8. The line in Fig. 7, between modulating source 24 and output FSB is shunted by two rectifier bridges associated with the carrier source 17 and biassing resistances 22, 52 which normally make the rectifiers nonconducting. The bridges are alternately brought into the condition in which they short-circuit the line during successive half-cycles of the carrier, the carrier and bias voltage being such that the carrier overcomes the bias for a quarter - cycle at the carrier voltage peaks. This results in short-circuiting the line at double the carrier frequency. In the modified system shown in Fig. 8, one pair of rectifiers 12, 13 is used in common for both bridges (11 .. 14 and 12, 13, 43, 44) which are fed with carrier frequency over a centre-tappedsecondary transformer 61, a common bias resistance 22 being also provided. This arrangement operates like that shown in Fig. 7. All the systems are described as applicable to demodulating-arrangements. The arms of the bridges may, in all cases, be provided with additional resistances to effect balance.
Patent GB-301307-A (GB)
Title: Improved manufacture of rayon of increased whiteness from viscose
IPC: D01F2/16
Filed: 1928-10-30
Abstract: 301,307. Du Pont Rayon Co., (Assignees of Henningsen, C.). Nov. 26, 1927, [Convention date]. Cellulose xanthates, processes for making filaments and films from.-In preparing white threads from viscose, the yellow discoloration of the threads prepared in the customary manner is removed by adding a sufficient amount of a bluish colouring matter to the viscose before coagulation. The colouring matter may be added at any of the stages before coagulation, for instance to the pulp before sheeting, to the caustic alkali solution, or to the prepared viscose. The colouring matters which may be employed include anthraquinone dyes, such as Ponsol blue R.P., Ponsol violet R.R., and Ponsol blue B.C.S., indigoid dyes such as Sulphanthrene violet B., mineral colours such as ultramarine, and phosphotungstic acid complexes of basic dyes, such as Halopont blue M.P. Mixture of dyes also may be used. Suitable proportions are indicated. The Specification as open to inspection under Sect. 91 (3) (a) is not restricted to the addition of a bluish colouring matter, and states that products of any desired colour may be obtained. It mentions Ponsol red and Thionol black O.G. as suitable colouring matters, and refers also to the manufacture of films. This subject-matter does not appear in the Specification as accepted.