baber/WOPTO huggingface dataset:
Patent GB-339012-A (GB)
Title: Improvements in lubricators
IPC: F16N7/00
Filed: 1929-09-13
Abstract: 339,012. Chalmers, R. A., and Tecalemit, Ltd. Sept. 13, 1929. Force-feed lubricating.-In a lubricator comprising a container in which is arranged a spring- pressed piston carrying a pin 19, Fig. 2, provided with a flat or recess 20 and slidable through the outlet orifice in the base of the container so as progressively to decrease the resistance of flow of the lubricant through the orifice as the spring expends, the pin is surrounded by a relativelyturnable tube 21 having an opening 22 corresponding to the recess 20, a screw 25 and spring-washer 24 being provided for fixing the tube in the desired position on the pin. The effective discharge area of the outlet may thus be adjusted initially. Alternatively, the tube may be carried by the piston and the pin be turnable therein. In another form, the piston 9, Fig. 3, carries a tube 30 slidable on a fixed rod 26, the tube being surrounded by a relatively-turnable tube 31 secured in the desired position by a screwed plug 38, provided with a bore 39, and a spring washer 37, the tube 31 being slidable in the outlet orifice 7. The tubes 30, 31 are provided with similar spaced holes 35, 36 which may thus be brought into or out of register by rotation of the tube 31 so as to vary the initial resistance to discharge, the resistance decreasing as the holes 36 are successively uncovered in the descent of the piston. The rod 26 may be adjustable vertically and may be hollow so that the container 2 may be charged therethrough. Two tell-tale rods 28, 29 are carried by the piston. In the modification shown in Fig. 4, the lower part 7<b> of the outlet is enlarged and, as the piston descends, lubricant is discharged laterally through the holes 35, 36, the resistance to discharge decreasing as the number of holes presented in the part 7<b> increases. The rod 26 may be dispensed with in this construction.
Patent GB-758612-A (GB)
Title: Gage for testing squareness or centricity or both of a surface with respect to an internal thread
Inventor: JOHNSON STANLEY GUSTAVE
IPC: G01B5/252
Filed: 1954-09-28
Abstract: 758,612. Gauging apparatus. JOHNSON GAGE DEVELOPMENT CO. Sept. 28, 1954, No. 27931/54. Class 106 (2). [Also in Group XXIII] Means for gauging the alignment of a threaded hole relative to a surface comprises a stem 10 having a plug 11 for screwing into the hole, and a member for supporting a gauge mounted on the stem for relative rotation, the stem being subjected to axial pressure to ensure the parallelism of its axis with that of the hole. In gauging a countersunk surface S1 relative to a hole, a collar 12 seats against the surface and a rotatable disc 18 carrying a gauge 21 is mounted on the stem. A spring 25 and a previously inserted stop nut 30 apply the axial pressure. The surfaces 14, 15 of the collar are parallel. Arrangements incorporating ball-and-socket connections between the stem and collar are described.
Patent GB-1107634-A (GB)
Title: Improvements in or relating to turning and boring tools with replaceable tips
Inventor: LOWE WILLIAM MAURICE
IPC: B23B27/16
Filed: 1965-07-01
Abstract: 1,107,634. Cutting tools. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 27 June, 1966 [1 July, 1965], No. 27932/65. Headings B3B and B3C. A cutting tool for turning or boring having a replaceable tip 13 comprises a shank 1 provided at one end with a tip mounting surface 2, a pin 9 which extends from the surface 2 for engagement with a central aperture 11 in the tip, an abutment member 17 for engagement with one of the unexposed side faces of the tip, the abutment member being in the form of a screw which engages the shank and has a freely rotatable head portion 17B with a flat thereon, and a further screw member 19 with a cam head which engages the shank to effect locking the tip on the shank by co-operation with the pin 9 and the abutment 17. To assemble the cutting tool, the tip is placed over the pin 9 on the surface 2 with one of its side faces engaging the flat on the abutment 17, the screw member is then turned so that its cam head engages a side face of the tip which is rotated about the pin until tightly engaging the abutment 17 so that the tip is held securely between the cam head abutment and pin. To release the tip the cam screw is rotated in the opposite direction thus permitting the changing of the tip or reorientation thereof to present a new cutting edge to a workpiece. The tip may be square, triangular or rhomboidal in shape.
Patent GB-1127324-A (GB)
Title: Suspenders
IPC: A41F11/02
Filed: 1965-07-01
Abstract: 1,127,324. Suspenders. C. S. R. WALFORD. 30 June, 1966 [1 July, 1965], No. 27967/65. Heading E2B. A suspender comprises a tab 5, secured to one end of a take 4 and having a keyhole slot, and a key tab  having a head 3 and a neck 2 secured either to one end of a tape 10 secured to the tape 4 or to the other end of tape 4. Part of a stocking is inserted between the tabs and the key tab 1 is inserted edgewise through the keyhole slot and turned so that the neck 2 lies in the wider part of the slot and the head 8 lies behind the narrow part. The tabs are flexible and may be made of polyvinyl chloride and the tapes may be elastic.
Patent GB-501673-A (GB)
Title: Improvements in radiators for the water-cooling systems of internal combustion engines
IPC: F28F1/32
Filed: 1937-10-15
Abstract: 501,673. Gilled tubes for heatexchangers. COVENTHY MOTOR FITTINGS CO., Ltd., and GARRATT, A. L. Oct. 15, 1937, No. 28047. Addition to 460,063. [Class 64 (iii)] The inner ends of the projections b<2> described in the parent Specification are closed so that the air entering the radiator is deflected from one side of each fin to the opposite side thereof, while the air passing between the tubes at the rear of the radiator is diverted on to said tubes. The tubes may be arranged as shown in Fig. 6,
Patent GB-649375-A (GB)
Title: Improvements in or relating to gas-turbine engines
Inventor: HAWORTH LIONEL
IPC: F02C7/32
Filed: 1948-10-28
Abstract: 649,375. Shaft couplings. ROLLS-ROYCE, Ltd. Oct. 28, 1948, No. 28065. [Class 80(ii)]  [Also in Groups XXV and XXVI] In a gas turbine plant, the compressor shaft 12 is coupled to the turbine shaft 14 through a part 15 which has a helical spline engagement 32 with a part 30 bolted to the shaft 12 and a helical spline engagement 34 with the shaft 14. The helical splines on the part 15 are held, against axial movement, between a shoulder 35 on the shaft 14 and a nut 36.
Patent GB-1523100-A (GB)
Title: Bushing for apparatus for spinning glass fibres
IPC: C03B37/083
Filed: 1977-07-05
Abstract: It has a base comprising a planar perforated plate (2), provided with reinforcements for preventing bending during spinning. The perforated plate (2) has 2,000 to 6,000 holes (1) which are smooth right through and have a mutual spacing of at most 3 mm. For increasing the output, to allow the perforated plate (2) to be provided with a greater number of holes (1) which are smooth right through, without the perforated plate (2) bending inadmissibly during operation, a plurality of mutually parallel supporting beams (4) are arranged inside the nozzle at a distance above the perforated plate (2). The supporting beams (4) are connected by their two ends to mutually opposite nozzle walls (3, 3'). Each of the supporting beams (4) is provided with rod-shaped elements (5), which connect the supporting beams (4) to the perforated plate (2). <IMAGE>
Patent GB-356497-A (GB)
Title: Improvements in or relating to crank-shaft mechanism for bicycles
IPC: B62M3/00
Filed: 1930-09-20
Abstract: 356,497. Securing cranks and sprocket wheels on shafts. RADNALL, E. A., Vauxhall Works, Dartmouth Street, Birmingham. Sept. 20, 1930, No. 28124. [Class 80 (ii).] In a pedal crank assembly for bicycles one end of the crank shaft 1 is formed with two arcuate longitudinal projections 16 having flattened sides to engage a complementary aperture in the crank 17 which is retained by swaging over the projections 16, a washer 20 being trapped between. A collar 5 is forced over the other end of the crank shaft, which may have flats 4, the sprocket wheel 10 being secured on the serrated recessed inner end of the collar by swaging over the end. The crank 13 is driven over the reduced outer end and the parts are subsequently brazed. Oil grooves 2 are provided in the crank shaft, and the whole structure may be plated.
Patent GB-192138-A (GB)
Title: Improvements relating to fitter's scrapers
IPC: B23D79/00
Filed: 1921-10-24
Abstract: 192,138. Littlewood, J. R. Oct. 24, 1921. Scrapers.-Fitters' scrapers are constructed from a length of steel ribbon or thin bar steel which is hardened throughout its length, or at one or both ends, and slidably mounted in a holder provided with means for securing the scraper in adjusted position. The holder 4 is constructed, in the form shown in Figs. 2 and 3, with undercut sides 2 to receive the bevelled edges of the scraper. To retain the scraper 1 in position, wedges, gripping- screws or cam levers may be provided, the lugs may be drawn together by a screw or an undercut recess 7, in which is carried a wire 8, may be formed in the holder. A tang 6 may be provided to enter an ordinary form of handle The dovetailed edges may be replaced by square ones, in which case the sides of the holder are made to overlap the scraper, or the holder may be constructed in the form of a flattened tube.
Patent GB-1027833-A (GB)
Title: Battery charging systems
Inventor: PRICKETT ALFRED DONALD
IPC: H02J7/24
Filed: 1961-08-03
Abstract: 1,027,833. Automatic voltage control. JOSEPH LUCAS (INDUSTRIES) Ltd. July 23, 1962 [Aug 3,1961], No.28200/61. Heading G3R. [Also in Division H1] An alternator 3 having a rectified output carries a voltage regulator which comprises a main transistor 11 in series with the field winding 10 of the alternator, a second transistor 12 controlling transistor 11, a potential divider 19, 17, 20 connected across the d.c.output,and a Zener diode 18. When the output voltage exceeds a predetermined value the Zener diode 18 conducts;the resultant conduction of transistor 12 then biases transistor 11 to reduce the field current of the alternator. The resistor 20 is preferably a thermistor bridged by a resistor 22. The transistor 11 is mounted on a heat sink carrying a cylindrical casing enclosing printed circuit boards and the other components of the regulator (Fig. 1,not shown).
Patent GB-483382-A (GB)
Title: Improvements relating to pull-out tables
IPC: A47B1/05
Filed: 1936-10-17
Abstract: 483,382. Extending tables. ROBERTSON, J., and DUNFERMLINE CABINET & UPHOLSTERY WORKS, Ltd. Oct. 17, 1936, No. 28243. [Class 52 (iii)] In extending tables of the type in which the extensible leaves comprise hinged sections e, f, mounted on runners d which are elevated during the extension, the normally upper section f being foldable inwardly when the leaf is in the extended position and supported upon the runners level with the remaining portion of the table whether it be in the extended or unextended position, the under side of the inner portion of each runner is provided with a curved or cam-shaped surface k which engages with a block or cam member l to raise the leaves to the required level. The sections e are fixed to the runners d and the sections f are hinged to the sections e at g. To extend the table the sections e, f, are raised to release a stop g<3> and drawn outwards, the outer ends of the runners moving upwardly due to a sloping underface g<1>, while the inner ends of the runners can drop to permit projections h<2> on the upper surfaces of the runners to clear a fixed transverse board h. Further outward movement causes the cam-shaped surfaces k to raise the runners at their inner ends and in the fully extended position projections j at the inner ends of the runners engage between the board h and the blocks l to prevent vertical movement. A stop g<2> limits the outward movement. In the retracted position the board h fits into cut-away portions h<1> of the runners. In a modification an intermediate leaf is located across the middle of the table between the two extensible leaves and the board h omitted, the top surface of the runners being straight and the projections j at the inner ends taking between the intermediate leaf and a transverse rail in the extended position.
Patent GB-340211-A (GB)
Title: Synchronised motion-picture and sound recording and reproducing mechanism
IPC: G03B31/00
Filed: 1929-09-18
Abstract: 340,211. Gramophones associated with kinematographs. BRITISH CONSOLIDATED INVESTMENTS CORPORATION, Ltd., River Plate House, Finsbury Circus, London.-(Ebeling, C. W.; 1600, Broadway, New York, U.S.A.) Sept. 18, 1929, No. 28321. [Class 40 (ii).] One or more turntables 23 are started and stopped from a kinematograph machine by radiallymoving toothed arms 25, 26 on the turntable which, by electromagnetic means operated from the film, are caused to engage either with teeth 17 on a continuously rotating disc 16 or with teeth 18 on a fixed annulus. A single motor (not shown) drives gearing 7, 8 which operates the camera or projector through a shaft 5 and rotates the disc 16 through a resilient coupling in a casing 10. The electromagnets 38, 39 actuate a sliding cam-plate 42 the cam-slot 45 in which is connected by a pin 44 to a rod 33 which, through a spring coupling in the box 32, conveys vertical movements to a rod 31. This rod is shaped at the top to engage the arms 25, 26 and convey the desired radial movements thereto. The slide 42 may be manually operated by a pivoted handle which is slotted to engage over a fixed pin to permit of readily centering the slide. An eccentric pin 22 on the turntable engages a hole in the record to provide a positive drive.
Patent GB-860433-A (GB)
Title: Apparatus for the testing of semi-conductors
Inventor: RIDOUT MICHAEL SOMERSET
IPC: G01R31/265
Filed: 1956-09-17
Abstract: 860,433. Light modulation. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 16, 1957 [Sept. 17, 1956], No. 28357/56. Class 40 (3). [Also in Group XXXVI] The lifetime # of minority carriers in semiconductors (e.g. Ge and Si) is determined by illuminating the material with light radiation modulated according to l=L sin #t, where l, L are instantaneous and maximum radiation values, #=pulsatance 2 #f, and the P.D. across the D.C. polarized specimen is approximately given by where e, E 1  are instantaneous and peak voltages, so that photo-conductivity of the specimen lags the illumination by angle tan<SP>-1</SP> ##; the resultant output being compared in a phase sensitive detector with the output of a photo-cell illuminated by similarly modulated light radiation to indicate the average product of the outputs. A semi-conductive specimen a is polarized by direct current from supply b and illuminated by infra-red radiation from source e which is cyclically modulated by perforated disc d driven by motor m. The signal voltage e s  developed across the specimen is amplified and applied to a phase sensitive detector p together with an amplified reference signal having a predetermined phase lead #/4, derived from photo-cell # and illuminating light source l suitably displaced mechanically from e, a, and the phase detector output determines the average product over a time interval long compared with 1/#. The motor m is speed controlled by amplifier c responsive to the output of tachometer generator g driven thereby and to a variable control voltage from potentiometer h; the tachometer voltage deflecting a voltmeter, and it is shown that the phase detector output is zero when ##=1, or #=1/#. The phase detector output may be retroactively fed back to regulate motor speed for #=1/#.
Patent GB-1198281-A (GB)
Title: Improved Organo Polysiloxane Lubricants
Inventor: SCHIEFER HARRY MARTIN
IPC: C10M/
Filed: 1967-06-20
Abstract: 1,198,281. Organopolysiloxane lubricants. DOW CORNING CORP. 20 June, 1967 [13 July, 1966], No. 28390/67. Heading C3T. [Also in Division C5] A lubricating composition consists essentially of a mixture of (1) 100 parts by weight of an organopolysiloxane liquid containing at least 70 mol. per cent of (R f CH 2 CH 2 )CH 3 SiO units, any other units present being (RSiO 3/2 ), (R 2 SiO) or (R 3 SiO 1/2 ), where R f  is a perfluoroalkyl radical containing not more than 12 carbon atoms and R is a monovalent hydrocarbon or halohydrocarbon radical; and (2) from 0À5 to 8 parts by weight of a compound selected from R n H 3-n PO 4 , R n H 3-n PO 3 , where R is as defined above and n is 2 or 3. A preferred compound (1) is a polymer of 3,3,3- trifluoropropylmethylsiloxane which has endblocks of the formula (R 3 SiO 1/2 ); preferred organophosphorus additives (2) include tris-(2- ethylhexyl)-phosphate, tributyl phosphate, tricresyl phosphate and di-isopropyl hydrogen phosphate. A solubilizing agent such as glycerol trioctoate may be added.
Patent GB-1212017-A (GB)
Title: Process for cross-linking chain-saturated polymers
Inventor: CUBBON ROBERT CHARLES PATRICK
IPC: C08K5/14
Filed: 1967-06-20
Abstract: 1,212,017. Cross-linking polymers. LAPORTE CHEMICALS Ltd. 12 June, 1968 [20 June, 1967], No. 28475/67. Heading C3P. Chain-saturated polymers are cross-linked, using as cross-linking agent a perester of crotonic acid. Specified polymers are ethylene/ vinyl acetate and ethylene/propylene copolymers and silicone polymers. Preferred peresters are t.alkyl, preferably t.-butyl. Vulcanizing agents, e.g. sulphur optionally in admixture with ethylene glycol dimethacrylate or glycerol trimethacrylate; and fillers, e.g. carbon black, clay calcium carbonate and zinc oxide, may also be present. The perester may be added on an inert support, e.g. calcium carbonate which may be coated with a stearate. Examples describe the curing of compositions comprising ethylene/propylene copolymers, carbon black, zinc oxide, sulphur and t.-butyl percrotonate which may be absorbed on calcium carbonate.
Patent GB-1372435-A (GB)
Title: Fluid mixing systems
IPC: B29B7/76
Filed: 1973-04-02
Abstract: 1372435 Fluid mixing systems VIKING ENG CO Ltd 2 April 1973 [17 June 1972] 28482/72 Heading B1C A fluid mixing system comprises a mixing head 1, a plurality of feed lines 5 each for feeding a respective fluid from a source 4 to the mixing head, each feed line incorporating a feed pump 7 and having a return line connected therein after the feed pump, and a valve system for each feed/return line combination operable to cause the fluid to be fed by the pump selectively to either the mixing head or via the return line back to the associated source wherein each valve system comprises two valves 9a, 9b, one 9a connected in the associated feed line between the mixing head and the connection 8 with the return line and the other 9b connected in the return line and each valve has a valve member 10 movable between first and second positions corresponding to open and closed states of the valve respectively, characterised in that restraining means 12 is provided for positive cooperation with the valve member when in the said first position so as to prevent further opening movement thereof. The valve member is biassed by spring 14 to a closed position and is opened by fluid pressure along pipe 15.
Patent GB-1433762-A (GB)
Title: Mehtod of removing nitrogen and other oxides from gas streams
IPC: C01B17/16
Filed: 1973-06-15
Abstract: 1433762 Treating waste gases PRINCETON CHEMICAL RESEARCH Inc 15 June 1973 [16 June 1972] 28499/73 Heading C1A [Also in Division B1] Nitrogen and/or sulphur oxides are removed from gases by absorption with alumina of surface area of at least 20 m.<SP>2</SP>/g. and an alkaline earth or alkali metal salt, oxide or hydroxide of Atomic Number not exceeding 56. Conventional methods of contacting are described and it may take place at 85‹ to 400‹ C. Regeneration of the absorbent is by contact with a stream containing CO 2  and water vapour and at least 0À01 ats. partial pressure of H 2 S at 350-700‹ C.
Patent GB-818721-A (GB)
Title: Improvements in space-heating radiators
IPC: F24D19/06
Filed: 1956-09-18
Abstract: 818,721. Combined radiators and air convectors for heating buildings. PERSSON, E. S. Sept. 18, 1956 [Sept. 19, 1955], No. 28535/56. Classes 64(2) and 64(3) A sinusoidal heating pipe 10 has a vertically corrugated metal sheet 1 secured to it by two bars each having a partcylindrical portion 16, Fig. 3, or two such portions 22, Fig. 6, for engaging the pipe 10 and a flanged portion 14 which fits into slots 18 in the corrugation crests nearer the pipe. The slots 18 are aligned in rows forming a discontinuous groove transverse to the direction of the corrugations and are undercut to hold the flanges 14. The radiator is mounted together with a window 26 in a frame. Part of the portion 16 may be cut away to allow a bar to extend past a curved end portion of the pipe 10 to the full width of the corrugated sheet 1.
Patent GB-1319651-A (GB)
Title: Electrostatic loudspeaker
IPC: H03F1/36
Filed: 1970-06-12
Abstract: 1319651 Electrostatic loudspeakers; acoustic lenses H N BEVERIDGE 12 June 1970 [17 June 1969] 28571/70 Heading H4J and H4X Adjacent the front of an electrostatic loudspeaker 10 (Fig. 1) is an acoustic lens 20 (Fig. 5) having a throat 20t, the lens 20 being made up of a set of channels defined by walls 20 1 , 20 2  ... 20 19 . Each channel has an inlet located adjacent a different surface portion of the loudspeaker diaphragm 12. Channels associated with neighbouring surface portions have their outlets in like neighbouring relationship. Each channel has a constricted throat portion. At the throat 20t the channels are substantially perpendicular to the planar diaphragm 12. Beyond the throat 20t the channels diverge to provide radiation through an angle α of substantially 180 degrees. The centre wall of the lens is, however, straight. The outlet axes of the various channels may be traced back to intersect at a common point (C) Fig. 2 (not shown) in front of the throat 20t. Preferably the curvature of the walls is such that each sound path from the diaphragm 12 to a semicylinder having its centre at point C is the same. A semi-cylindrical wave front is thereby emitted. The walls 20 1 , 20 2 , ... 20 19  may be of paper. Preferably each channel is of width about 2/3 inch and less than 1¢ inches. Sound from the rear of the loudspeaker 10 is channelled to sound absorbent material 19 (effective down to about 300 Hz) and a rigid walled enclosure 18 prevents escape of any rearwardly directed sound. The air volume II of the rear of the enclosure is a plurality of times (e.g. 10 times) greater than the air volume I of the lens. The ends 20e are covered by cloth 17 anchored at edges 21, 22 of the enclosure 18. The cloth 17 is supported by projections 23. Dimensions of a typical enclosure and electrostatic loudspeaker are given.
Patent GB-901776-A (GB)
Title: Improvements in or relating to devices for smoothing the movements of means for varying focal length in lens carriers
IPC: G02B7/08
Filed: 1960-08-19
Abstract: 901,776. Variable focal length lens mounts. SACHTLER, W., and WOLF, H. Aug. 19, 1960 [Aug. 19, 1959], No. 28763/60. Class 97 (1). A device adapted to be mounted on the carrier of a variable focal length objective comprises a flywheel and gearing which transmits motion between the zoom control member and the flywheel so as to eliminate jerky movement of the zoom control member. As shown, the zoom control member of the variable focal length objective 1 is a lever 4 which is pivoted at 5 and engages at one end in a groove 8 provided in a slidable lens cell 2. Jerky movements of this lever 4 are eliminated by the provision of a device which is clamped to the lens mount by a screw clamp 16, 17. This device includes a forked member 10 which embraces the pivoted lever 4 and is connected to a disc 11 rotatable about an axis co-linear with the pivot 5, this disc 11 being connected through a gear train in a housing 13 to a flywheel 14. In a further form, the zoom control element is a knurled ring on a rotatable sleeve on the lens mount, this ring being connected by gearing to a flywheel, the gearing and flywheel being provided on a mount adapted to be clamped to the lens tube.