baber/WOPTO huggingface dataset:
Patent GB-1096814-A (GB)
Title: Toothed members
IPC: F16D11/10
Filed: 1964-12-29
Abstract: 1,096,814. Positive clutches; securing gears on shafts; toothed gearing. W. H. BIBBENS. Dec. 29, 1964 [Jan. 22, 1964], No. 52680/64. Headings F2C, F2Q and F2U. To prevent undesirable relative axial movement under load of two toothed members such as two external gears, an internal and an external gear, or an internally and an externally splined member, working faces of the teeth of either one of the members comprise inclined surfaces engaged, in initially substantially line contact by working face edges of the mating teeth of the other member. The invention is particularly applicable to clutches and sliding gears in motor vehicle change-speed gears. As shown, in a change-speed gear positive clutch, clutch teeth 23 internal of a slidable fork-actuated sleeve, constantly meshing external teeth of a shaft collar and selectively movable axially into mesh with external teeth 16 of a freely rotatable gear 13, have arcuate concave recesses 25, 27 substantially longer than the teeth 16. In operation, with clearance between the ends of the teeth 23 and the wall of the gear 13, the teeth 16 balance to a position in the middle of the engaged recesses 25, the edges 30, 31 of the teeth 16 engaging the recesses 25. With wear, the line contacts between the teeth 16, 23 increase to limited area contacts. Where the ends of the sleeve teeth 23, contact the gear wall (Figs. 7, 8, not shown), the adjacent ends of the teeth of the gear are bevelled and the sleeve teeth are held axially between the contacts with the wall and the edges of the bevels, the remote edges of the clutch teeth of the gear being clear of the recesses. The recesses may, alternatively, be each formed by two, equal or unequal, inclined planes (Figs. 10, 11, not shown), connected by a relief, fillet radius or flat; a single inclined plane contacted by one or other of the edges of the mating tooth (Fig. 12, not shown), the end of the sleeve tooth abutting the wall of the gear. In Figs. 14, 15 (not shown), arcuate recesses are provided on one or both sides of gaps of external straight or helical, straight-sided or involute splines engaged by internal splines of a fork-actuated sliding gear.
Patent GB-1163754-A (GB)
Title: Improvements relating to the Rolling of Rod Stock
Inventor: WOODCOCK DONALD BERNARD
IPC: B21B1/18
Filed: 1965-12-11
Abstract: 1,163,754. Rolling. G.K.N. GROUP SERVICES Ltd. 30 Nov., 1966 [11 Dec., 1965], No. 52695/65. Heading B3M. The effective stiffness of a rolling mill stand for rolling rod stock is modified by mounting yieldable units, Fig. 8, each having a stiffness of the same order as that of the stand, in association with the respective pairs of bearing assemblies 18a, 19a at the opposite ends of the rolls in order to partake of stress set up in the stand. In one embodiment, each yieldable unit comprises a jack wherein a preselected volume of liquid is contained at the bottom of a chamber 25 in which is movable a thrust element 26. In the first stands of a multi-stand mill, a jack 23a may be placed between the bearing assemblies 18a, 19a to increase the effective stiffness of the stands. The stiffness of the last stands is reduced by placing a jack 23a between, for example, the upper bearing 19a and the head screw 22a, the mill arrangement being such as to improve the dimensional accuracy of the rolled stock. The stiffness of the jack is controlled by the volume of liquid in the space 29, which is filled by passing the liquid from a duct (47), (Fig. 7, not shown) through a non-return valve positioned in a cavity (51). The liquid is released from the space 29 by slackening a thrust rod 34 to allow it to flow past a ball element 32, into an outlet chamber 37 and along a transverse duct (44) (Fig. 6, not shown) into the inlet socket (45). The yieldable unit may alternatively comprise a cylindrical body (74) (Fig. 9, not shown) containing a block of rubber (83) instead of a liquid.
Patent GB-1381881-A (GB)
Title: Creep-resisting steel
IPC: C22C38/06
Filed: 1971-11-12
Abstract: 1381881 Working at specified temperatures OVAKO OY 12 Nov 1971 [12 Nov 1970] 52710/71 Heading B3V [Also in Division C7] Low or high alloy steels have a structure of sub-grain sized cells stabilized by precipitation on the cell boundary networks of phases arising from the presence of all of the following elements in amounts up to the limits stated: Ti up to 0À15% by weight Zr up to 0À10% " " C up to 0À10% " " N up to 0À02% " " B up to 0À006% " " The cell structure may be developed by decomposition of austenite or by cold working and tempering, while the precipitate may be formed during production of the cell structure, by a subsequent heat treatment or during creep. As exemplified, a steel containing 0À07% C, 0À56% Si, 0À5% Mn, 0À05% Cr, 0À12% Ni, 0À03% Mo, 0À23% Cu, 0À15% Sn, 0À14% Ti, 0À0049% B, 0À068% Zr, 0À0125% N was forged at 1000‹ C., heated at 1200‹ C. for 2 hours and water quenched; after cold rolling by 0-40% the cell structure was stabilized by precipitation at 600‹ C. for 2 hours.
Patent GB-1283852-A (GB)
Title: Filing cabinet
Inventor: BARROW JAMES ELIOTT
IPC: A47B88/48
Filed: 1970-11-06
Abstract: 1283852 Filing cabinets J E BARROW 6 Nov 1970 52912/70 Heading A4B [Also in Division B6] A filing cabinet houses a vertical series of drawers 12-12c which on withdrawal may be swung down to a vertical position, each drawer 12 having at its rear bottom edge an arcuate flange 32 which is engageable with an upstanding lip 33 on the projecting front edge of a compartment bottom 34a. Each drawer slides on bearing surfaces 16 on side rails 15. A keeper plate 24 is mounted by a spring-loaded hinge 25 in the drawer. (For Figures, see next page)
Patent GB-1298135-A (GB)
Title: Suction apparatus
Inventor: LAERDAL ASMUND SIGURD
IPC: A61M1/00
Filed: 1970-11-16
Abstract: 1298135 Suction apparatus A S LAERDAL 16 Nov 1970 [21 April 1970] 54512/70 Heading A5R [Also in Division F1] Suction apparatus for draining a patients mouth prior to artificial respiration comprises a jet device 3 attached to a gas bottle 1 and a collecting vessel 4 provided with an inlet 28 for connection to a drainage tube. The gas bottle 1 is normally filled with difluoro-dichloromethane and is housed in a slatted holder 2. Application of control screw 25 displaces the bottle towards the jet device and depresses valve 24 releasing a stream of gas. This passes opening 20, enters chamber 14 and leaves the apparatus by way of passage 16. Air is drawn in from the collecting vessel 4 through opening 20 by the venturi effect. A filter 23 is provided to prevent solid matter passing into the jet. The bottle holder 2 may be provided with leather straps 30 for disposing about the neck of the operator. The collecting vessel 4 serves as a container for the bottle holder and jet device when inoperative.
Patent GB-1364490-A (GB)
Title: Flexible waveguides
IPC: H01P3/14
Filed: 1971-11-30
Abstract: 1364490 Flexible waveguides LICENTIA PATENT-VERWALTUNGS GmbH 30 Nov 1971 [3 Dec 1970] 55427/71 Heading H1W A flexible waveguide for transmitting two perpendicularly polarized waves comprises a thin seamless aluminium tube whose outer cross-section is generally square with heavily rounded corners and whose inner cross-section is formed by two overlapping elliptical hollows, whose major axes preferably lie on the diagonals of the square. The sides of the square may be arched outwards slightly. The thicknesses of the wall at b 1 , b 2 , and b 3  are respectively 4, 1, and 2 mm. The ratio of the minor to major axes of the ellipses lies between 0À55 and 0À85.
Patent GB-1421479-A (GB)
Title: Steam generators
IPC: F22B1/16
Filed: 1973-11-30
Abstract: 1421479 Steam generators GUTEHOFFNUNGSHUTTE STERKRADE AG 30 Nov 1973 [2 Dec 1972] 55561/73 Heading F4A A steam generator comprises steam separators 8 surounded by an annular overflow plate 15 whose upper edge 16 is located above the level of the water outlets 12 of the separators so that water discharged from the outlets fills the space bounded by the plate 15 to form a hydraulic seal. Drain holes 18 are provided at the base of plate 15 to allow the water in the space bounded by the plate to flow to the annular feed space 10. The total cross-sectional area of the holes is such that, when the space bounded by the plate 15 is filled with water, the flow rate of water through the holes is less, preferably half, than that from the water outlets 12 of the separators.
Patent GB-1202409-A (GB)
Title: Electrolytic electrophotography
IPC: G03G17/02
Filed: 1967-12-07
Abstract: 1,202,409. Electrolytic development. FUJI SHASHIN FILM K.K. Dec.7, 1967 [Dec.7, 1966], No. 55659/67. Heading G2H. In the electrolytic development of an exposed photo-conductive material a layer of a dispersion of a pigment in an animal or vegetable fatty oil including tallow and lard is applied to the surface of the photo-conductive layer either before or after exposure but before immersion in the electrolytic bath. The electrolyte for the bath may be sodium chloride, ammonium chloride an acid or alkali. Specified pigments are phthalocyanine blue, red iron oxide, para red, piano blue, titanium dioxide, carbon, ultramarine blue, cadmium yellow, azo, quinoline, anthraquinone and triphenylmethane dyes. The support for the photo-conductive layer may be paper containing fine metallic filaments or paper containing glass fibres on which metal has been deposited.
Patent GB-1464940-A (GB)
Title: Electromagnet
IPC: H01F7/13
Filed: 1974-12-31
Abstract: 1464940 Electromagnets; electromagnetic relays LA TELEMECANIQUE ELECTRIQUE 3.1 Dec 1974 [31 Jan 1974] 56128/74 Headings H1P and H1N An electromagnet comprises a U-shaped yoke having branches 5, 7 and base 13, and a pivoted L-shaped armature 2 with branches 6, 8; the branches 7, 8 in the operated condition being located within the inner region of coil 1 with an interposed air gap. The latter is defined by conjoined curved portons 10, 11 extending successively from the outer end of branch 7 to base 13, and 12, 14 extending successively from the inner to the outer ends of branch 8; a polepiece 17 extending from base 13 defining a further curved portion 15 to leave a space 20 between the surfaces of portions 11, 15. In the first segment of travel of the armature, portion 12 interacts with portion 10 until portion 14 of branch 8 enters space 20 and in the second segment of travel portion 14 is positioned in the centre of space 20, wherein its pole face 18 transverse to the armature movement F approaches surface 19 of space 20 to eventually abut a brass plate preventing retentive attraction with a small constant width gap between portion 10 and branch 8. An insulant projection 21 integral with the armature may operate switching contacts of blade 23, or may operate pneumatic valving. Fig. 3 shows the relationships between resistive force CR; the operative force EV of the electromagnet as described, and the operative force EC of a similar electromagnet with a constant air gap; relative to the angular rotation of the armature. Figs. 2, 4 (not shown), illustrate the constructional parameters of the electromagnet yoke and armature.
Patent GB-1400600-A (GB)
Title: Process for the manufacture of articles comprising copper coatings on shaped plastics supports
IPC: C23C14/02
Filed: 1972-12-06
Abstract: 1400600 Vapour depositing copper HOECHST A G 6 Dec 1972 [8 Dec 1971] 56266/72 Heading C7F Prior to the vapour deposition of Cu on a plastics substrate e.g. polyimides, a.b.s., polyesters or polyolefin, the substrate is made conductive either by sensitizing with a noble metal salt and then electrolessly depositing Cu or by incorporating carbon black in the surface. The resistance of the conductive layer is from 1 to 10<SP>12</SP> ohm. The vapour deposited Cu may be thickened electrolytically with Cu. The electroless process comprises contacting the substrate with a chromic-phosphoric-sulphuric acid mixture or a 50% hot NaOH solution, sensitizing with a salt of Pt, Pd, Au or Ag, activating with stannous chloride or hydrozine hydrate, and then using a solution containing 5 to 8 g/l copper sulphate and formaldehyde with a sulphate: formaldehyde ratio of 1:1 to 1:0.7. An example comprises (g./l.) 7.6 CuSO 4 , 5H 2 O, 6.3 formaldehyde, 9.1 e.d.t.a., 0.5 saccharin, 5.0 NaOH.
Patent GB-1414660-A (GB)
Title: Transmission line oscillators
IPC: H03B5/18
Filed: 1972-12-07
Abstract: 1414660 Transmission line oscillators MARCONI CO Ltd 25 Oct 1973 [7 Dec 1972] 56600/72 Heading H3F In a transmission line oscillator comprising at least one valve 1,. 2 having at least an anode; cathode and a grid and a. transmission line resonator 16, 18 in the anode circuit of the or each value forming part of the output circuit of the oscillator, a feedback transmission line 13, 14 is: connected at one end to a tapping point 15, 17 on the anode transmission line resonator and at the other end to the cathode of each valve via. an impedance matching network 8-12 presenting as resistive; termination to the feedback transmission line and the whole arrangement is such that in operation the phase delay between the tapping point and the cathode provides feedback to maintain oscillation. In the pushpull oscillator shown in Figs. 1 lines 16, 18 are of length #/4 and the frequency can be adjusted by a capacitor 24 and/or an adjustable shorting bridge adjusting the effective length ofthe lines 16 and 18. The coaxial cables 13, 14 are of lengths to provide a phase delay between the tapping point 15, 17 and the cathode of the valve equal to (2n-1)# radians and, the amplitude of the feedback may be adjusted by adjusting the tapping point. The cathode lead inductance is 8, 10; the gridcathode capacitance is 9, 11 and 12, 12a are capacitors. The output' is taken via a. loop 23 and chokes or #/2 lines 4, 6 provide a high RF impedance. Instead of the crosscoupled feedback connection via 1-3, 14 correctly phased feedback may be provided from the anode line of each valve to the cathode of that valve. In a modification (Fig. 2, not shown) the anode lines 16, 18 are ¥À# in length and the tappings 15, 17 may be the anode side of the radial point of the voltage standing wave (25) on each line to provide a phase delay (2n-1)# radians.. If the tappings 15, 17 are the other side of the nodal point remote from the anode then a phase delay of 2n# radians is obtained. In a further modification (Fig. 4, not shown) the frequency is varied by changing the effective lengths of stub lines (34 and 35) attached, at the voltage maximum of the standing wave to the lines 16, 18 byadjustment of a shorting bridge (36). A single valve arrangement is disclosed (Fig. 3; not shown) which has a coaxial anode resonator (31) and a coaxial resonator (33) connected to the cathode of the valve.
Patent GB-1142058-A (GB)
Title: A socket unit
IPC: H02B1/048
Filed: 1966-12-22
Abstract: 1,142,058. Stud and socket fastenings. TATEISI ELECTRONICS CO. 22 Dec., 1966 [29 Dec., 1965], No. 57418/66. Heading E2B [Also in Division H2] A resilient clip 14 embrices the upper part of a socket connector body 12 and, in mounting the body in a panel aperture 18, opposed flanges 26 on the body and tongues 48 on the clip engage, respectively, the upper and lower faces of the panel. The clip 14 snap-fits onto the body 12 so that its opposite side walls 40 and connecting pieces 42 engage respectively in recesses 28 and channels 34 of the body, flanges 30 on the body retaining the clip. The resilient connecting pieces 42 are bowed to enable mounting of the connector on panels of different thicknesses.
Patent GB-1160280-A (GB)
Title: Improvements in Antennas for Radio Waves and in Particular Cassegrain Antennas
IPC: H01Q19/02
Filed: 1966-12-22
Abstract: 1,160,280. Aerials. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 22 Dec., 1966 [22 Dec., 1965], No. 57540/66. Heading H4A. In an aerial of the two-reflector or Cassegrain type a supplementary reflector Rs is placed between the primary source S and the auxiliary reflector R a  in order to increase the illumination upon the edge portions of the main reflector Rp, with the object of reducing the effects of aperture blocking by the said auxiliary reflector. The supplementary reflector may be supported on a rod t extending from the auxiliary reflector and may be constituted by a single disc, or by a series of discs whose diameters decrease towards the main reflector (Fig. 6, not shown). Alternatively, the supplementary reflector may comprise portions of cones or cylinders, or of hyperboloids, ellipsoids, or paraboloids, which may be confocal with the auxiliary reflector.
Patent GB-1358889-A (GB)
Title: Circular knitting machines
IPC: D04B9/02
Filed: 1971-12-10
Abstract: 1358889 Knitting-machines; quality control ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 10 Dec 1971 [14 Dec 1970] 57623/71 Heading D1C In a circular machine the density lever 6 is mounted on an eccentric pivot 7c which can be adjusted at a speed change by a second lever 22 at the dictates of control chain 28. Striping of the fabric is thereby avoided. The pivot pin 7 is supported by coaxial parts 7a, 7b in a support 8, and rotatable therein by lever 22. Predetermined density changes are initiated by a control drum 20 acting via levers 15 pivoted on the end 13 of the lever, and adjusting screws 16. The cylinder is raised by screws 5 at the bifurcated end 6a of the lever.
Patent GB-1152808-A (GB)
Title: Motor Speed Control System
IPC: H02P7/295
Filed: 1967-12-19
Abstract: 1,152,808. Control of D.C. motors. SINGER CO. 19 Dec., 1967 [27 Dec., 1966], No. 58175/67. Heading H2J. The speed of a motor 10 is controlled by a series manually variable resistor 23, which is shunted by a controlled rectifier (thyristor) 33 triggered according to the load on the motor. The motor drives a sewing machine or sabre saw in which the load may be suddenly applied; the invention prevents stalling by providing an additional current path through 33 when this is triggered by the extra load, detected by the current through resistor 25. The control is essentially of the on-off type, but there is also some phase angle control, depending upon the value of the load current. The motor is either a series, shunt or permanent magnet machine. It is supplied from the unsmoothed output of a bridge rectifier 13, and a freewheeling diode 37 is provided.
Patent GB-1455450-A (GB)
Title: Process for preparing resorcinol
IPC: C07C27/00
Filed: 1973-12-17
Abstract: 1455450 Separation of Resorcinol HOECHST AG 17 Dec 1973 [16 Dec 1972] 58371/73 Heading C2C Resorcinol is isolated from a resorcinolcontaining mixture obtained from the acidcatalysed cleavage of 1,3-diisopropylbenzene dihydroperoxide by eliminating the acetone formed during the acid catalysed cleavage and purifying the crude resorcinol by selective extraction. The extraction is preferably achieved by liquid-liquid distribution between water and an organic solvent which is immiscible with water.
Patent GB-1240600-A (GB)
Title: New amides useful as colour couplers in photographic emulsions
Inventor: IWAMA KASAKUNI
IPC: G03C7/36
Filed: 1969-11-28
Abstract: 1,240,600. Amides. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 28 Nov., 1969, No. 58428/69. Heading C2C. [Also in Division G2] The invention comprises compounds of the formula where X is H or halogen; Y is H, alkyl of 1-4 carbon atoms, alkoxy of 1-4 carbon atoms, aryloxy or halogen; R 1  is tert-butyl or optionally substituted phenyl; R 2  is H or straight or branched chain alkyl of 1-14 carbon atoms and R 3  is straight or branched chain alkyl of 1-18 carbon atoms, the sum of the carbon atoms in R 2  and R 3  being 8 or more. The compounds wherein X is H are prepared by condensing a compound of the formula with ethyl pivaloylacetate or a substituted or unsubstituted ethyl benzoylacetate. The compounds wherein X is halogen are prepared from those in which X is H.
Patent GB-1375390-A (GB)
Title: Improvements relating to coin dispensing
IPC: G07D5/00
Filed: 1971-12-16
Abstract: 1375390 Coin sorting and dispensing MITSUBISHI JUKOGYO KK 16 Dec 1971 [29 Dec 1970] 58537/71 Heading G4X In a coin sorting and dispensing machine coins are fed along a path C1 at constant velocity and spacing to a discrimination means 2 which detects unspecified physical properties of the coins and is connected to a false coin discharge means 6 operable to discharge a coin to reject path C3, the genuine coins then being examined by means 3 for surface damage with unacceptable coins being discharged by means 7 along path C4, a coin discharge means 4 dispensing the acceptable coins along path C2, where they are counted to container S3. In the embodiment described the coins are fed to path C1 from diameter testing means 1, which sorts acceptable coins from those of larger and smaller diameter into path C5 and also removes warped coins into path C6. Two coin detectors P7, P8 are used for the coins in discharge path C2 these being connected to respective counters (F), (G); (Fig. 2, not shown) which provide a cross-check on each other. The operation of discharge means 4 is stopped at certain preset levels of counters (F), (G). A coin replenishment means 5 is provided which automatically supplies an acceptable coin to discharge means 4 when a damaged coin is discharged along path C4, and which may be manually operated when all the coins have been tested to bring the count of the counters (F), (G) up to one of the preset levels. Further detectors P 0  to P6 are located on the various coin paths and are connected to associated counters to provide indications of the total numbers of coins charged, coins of irregular diameter, warped coins, false coins, true coins, damaged coins and coins supplied by the replenishment means.
Patent GB-1283949-A (GB)
Title: Process for the post-stabilisation of polyamides
Inventor: REINISCH GERHARD
IPC: C08G69/48
Filed: 1969-12-05
Abstract: 1283949 Stabilizing polyamides DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN 5 Dec 1969 59495/69 Heading C3R Polyamides are post-stabilized by adding a diacylimide to a melt thereof to react therewith in the melt, thus blocking the greater part of the free terminal amino groups. The diacylimide may be used in amount equivalent to 30-300% of the said amino groups. The diacylimide may by N-acetylcaprolactam. The polyamide may be polycaprolactam. The stabilized polyamide may be formed into granules or filaments. Specification 1,065,877 is referred to.
Patent GB-1455710-A (GB)
Title: Resolution of optically active compounds
IPC: B01D9/00
Filed: 1973-12-31
Abstract: 1455710 Resolving racemic mixtures WARD BLENKINSOP & CO Ltd 12 Dec 1974 [31 Dec 1973] 60311/73 Heading B1G [Also in Division C2C A racemic or partially racemic mixture of an optical isomer is resolved, as a salt of two optically active compounds, by supersaturating a solution thereof with respect to at least one of the optical isomers of the salt and then selectively crystallizing the isomer from the solution e.g. by seeding. The resolution of 10-camphor sulphonic acid (C.S.A.) and α-amino phenyl acetic acid (A.P.A.A.) is exemplified. Firstly the salt DL-C.S.A./DL-A.P.A.A. is formed by dissolving the constituents in boiling water using a 20% molar excess of the C.S.A. The solution, clarified with active Al 2 O 3  and charcoal, is then supercooled to 50‹C. The solution is then seeded with crystals of the salt DA.P.A.A./D-C.S.A. and the crystals formed separated. Subsequently the filtrate, enriched with the salt L-A.P.A.A./L-C.S.A., is seeded at 45‹C with crystals thereof. The cycle may be repeated with crystallisation at 45‹C and 40‹C respectively using seed crystals produced in the first step. The individual optical isomers may be obtained by dissolution of the separated crystals in water at 60‹C, followed by the addition of concentrated NH 3  to pH 6. The ammonium salt of C.S.A. separates on cooling.