baber/WOPTO huggingface dataset:
Patent GB-1107329-A (GB)
Title: Olefin terpolymers
IPC: C08F210/18
Filed: 1965-09-17
Abstract: Linear amorphous terpolymers of ethylene, an aliphatic alpha-olefin having from 3 to 8 carbon atoms, and methyl-cyclopentadiene dimer are made by copolymerizing a mixture of the monomers in the presence of a halogen-containing catalyst consisting of the reaction product between vanadium compound and an organometallic compound of beryllium or aluminium, at a temperature between + 10 DEG  C. and - 80 DEG  C., and using as the polymerization medium the mixture of olefinic compounds kept in the liquid state.  The methylcyclopentadiene dimer is obtained by conventional processes of cracking petroleum hydrocarbons.  The Specification contains a long list of suitable catalyst components. The alpha-olefin may be propylene or butene-1. In Example I, liquid propylene, methylcyclopentadiene dimer, and ethylene were copolymerized at - 10 DEG  C. in the presence of (C2H5)2AlCl and VCl4 whilst in Example II, the same monomers were copolymerized in the presence of (C2H5)2AlCl and VoCl3.  The copolymers are completely soluble in boiling n-heptane and may be sulphur vulcanized using conventional mixes.
Patent GB-1107270-A (GB)
Title: Improvements in and relating to a centrifugal fan comprising a drum impeller
IPC: F04D29/28
Filed: 1966-09-06
Abstract: 1,107,270. Centrifugal fans. NORDISK VENTILATOR CO. A/S. Sept. 6, 1966 [Sept.8, 1965], No.39861/66. Heading F1C. In a centrifugal fan comprising a drum-type impeller having radially shallow blades 3 carried by a central disc 5, a flared inlet nozzle 9 at one or both ends of the impeller is carried by the impeller instead of the volute casing and forms an end ring of the impeller. The maximum diameter of each nozzle 9 is greater than the diameter of the inlet opening of the adjacent side wall 7 of the casing, and the casing is divided on, e. g., an axial plane to permit removal of the impeller. Where the nozzle 9 remote from the driving motor 1 is located partly outside the casing as shown, it is sufficient to remove one part only of the divided casing. The impeller is then moved axially to the left to free its hub 10 from the motor shaft 2, whereupon it can be tilted to bring the right-hand nozzle 9 clear of the remaining part of the casing.
Patent GB-1364632-A (GB)
Title: Process for preparing a hydrogenation catalyst
IPC: B01J23/755
Filed: 1971-08-26
Abstract: 1364632 Hydrogenation catalyst GAF CORP 26 Aug 1971 [16 Sept 1970] 40178/71 Heading B1E A hydrogenation catalyst comprising an amorphous or gamma alumina support carrying 12-20 % wt. metallic nickel, 1-10% wt. metallic copper and 0-1.5% wt metallic manganese is formed by (i) impregnating the alumina support with salts of the metals, the support initially having a surface area of 125-425 m<SP>2</SP>/g, a pore volume of 0.25-0.95 cm<SP>3</SP>/g and a bulk density of 0.5-1.25 g/cm<SP>3</SP>; (ii) calcining at 250C to 500C to convert the metal salts to the oxides, the catalyst then having a surface area of 110-175 m<SP>2</SP>/g, a bulk densiy of 0.5-1.25 g/cm<SP>3</SP> and a pore volume of 0.25-0.9 cm<SP>3</SP>/g; and (iii) reducing with hydrogen at 250-500C at atmospheric pressure to 1,500 psig.
Patent GB-1344598-A (GB)
Title: Rotor structure for turbo machines
IPC: F01D5/06
Filed: 1972-08-31
Abstract: 1344598 Centrifugal and axial flow compressors; turbines CARRIER CORP 31 Aug 1972 [6 Oct 1971] 40339/72 Headings F1C and FIT [Also in Division F2] A rotor structure for a turbine, an axial-flow compressor or, as shown, a centrifugal compressor, comprises stub shafts 10, 11 fixed to the ends of a tie bolt 12, a rotor assembly including rotors such as 18-21 fixed between the stub shafts, and force producing means carried in part by the rotor assembly and adjustable to exert an adjustable radially inward restraining force on the tie bolt to increase the natural frequency of vibration of the tie bolt and thereby avoid resonance at operating speeds. The force producing means comprises screws 61 acting through pins 60 upon resilient cantilever portions 50 of a sleeve 40 which is shrunk at one end on to an enlarged portion 43 of the tie bolt 12. To provide the cantilever portions 50, the sleeve 40 is formed with slots 47. The rotors 18-21 are fixed to one another and to the stub shaft 10 and a seal member 17 by means of pins 31. After the stub shaft 11 has been threaded on to the tie bolt 12, keys 33 are inserted.
Patent GB-1131266-A (GB)
Title: Electromagnetic coupling apparatus
IPC: H02K49/00
Filed: 1966-09-12
Abstract: 1,131,266. Controlling electromagnetic couplings. EATON YALE & TOWNE Inc. 12 Sept., 1966 [6 Oct., 1965], No. 40620/66. Headings F2E and F2L. The control circuit for an electromagnetic clutch or brake having an energizing coil, includes a voltage multiplier which stores energy at a first voltage level when the coil is disconnected therefrom, and which, on connecting the coil thereto, over-excites the coil by energizing it at the first level to render the clutch or brake rapidly capable of transmitting a given torque, and, after discharging the stored energy, continues to energize the coil at a lower second voltage level to maintain transmission of the given torque. As shown, the control is applied to a clutch/ brake combination (11), (13), Fig. 1 (not shown), having energizing coils 21, 27, respectively. The brake power supply includes a pair of rectifiers or diodes D1, D2 connected to A.C. supply lines L1, L2 and supplying each of two capacitors C1, C2 with half-wave rectified current, the circuit acting as a voltage doubler. The clutch power supply similarly includes rectifiers or diodes D3, D4 and capacitors C3, C4. A switch S1, e.g. an electromagneticallyoperated relay, selectively connects coils 27, 21 across capacitors C1, C2 and C3, C4, respectively. With the switch S1 in the position shown, capacitors C1, C2 are charged to a total voltage of approximately twice the peak supply voltage. On closing contacts S1A, the capacitors discharge through the coil 27, providing an initial high voltage. The capacitors C1-C4 are chosen such that the steady voltage provided by the supply circuits is substantially equal to the rated voltage of the coils 21, 27. Alternatively, Fig. 3 (not shown), the clutch coil may be connected across one (C2) of the two capacitors used in the brake power supply, no initial over-excitation being provided for the clutch coil. Again, Fig. 4 (not shown), the clutch may be connected to receive half-wave rectified power through a diode (D5) from a supply line (L1A) and line (L1). In the control illustrated in Fig. 5 (not shown). the brake coil (27) is energized from a voltage quadrupler power supply comprising a series of diodes (D6-D9), capacitors (C6-C9) coupling A.C. to each of the diodes from lines (L1), (L2). An increased ratio of initial excitation to steady voltage may be obtained, Fig. 6 (not shown), by alternatively coupling A.C. to the higher voltage diode stages by capacitors (C11- C14) which draw power from the lower voltage stages rather than directly from lines (L1 (L2).
Patent GB-1400779-A (GB)
Title: Pipe joints and method of manufacturing same
IPC: B29C70/86
Filed: 1972-09-01
Abstract: 1400779 Making couplings by winding CIBA-GEIGY AG 1 Sept 1972 [7 Sept 1971] 40765/72 Heading B8G [Also in Division F2] First and second pipe sections 14, 12 are connected by a coupling comprising a sleeve 16 secured to the first pipe 14 and a matingly engageable collar 24 of filament wound material having a recess 50 receiving a seal ring 52, secured to the second pipe 12. As shown in Fig. 1, the pipe ends have tapered surfaces 20, 28 for engagement with tapered bores 18, 26 in the sleeve and collar wherein the pipes are chemically bonded as at seams 22, 30. The collar and sleeve are each screw threaded as at 36, 40. The seal ring 52 is radially compressed on a taper 46 of the sleeve 16 when the members are screwed together. In a method of making a plurality of the collars 24 in a single winding operation, resin impregnated glass filaments 74, Fig. 5, are wound around a plurality of collar-forming die sets slid  on to a common mandrel. The resin is preferably thermosetting, e.g. epoxy or polyester resin with a hardener. After the winding operation, heat is applied to accelerate curing, the mandrel is removed and the collars are severed one from another. At least one die member, that forming the seal ring recess, is removed by deforming or melting it whereas the other members may be removed intact. This lost die member may be of polyethylene or a eutectic mixture of inorganic salts.
Patent GB-1156227-A (GB)
Title: The Preparation of Clarified Potassium Hydroxide
IPC: C01D1/28
Filed: 1966-09-13
Abstract: 1,156,227. Potassium hydroxide. SINCATSOCIETE INDUSTRIALE CATANESE S.p.A. 13 September, 1966 [14 Sept., 1965 (2)], No. 40937/66. Heading C1A. Potassium hydroxide solution containing about 90% KOH and contaminated with dark nickel compounds from the concentration vessel, is clarified by the addition of at least one alkali metal metabisulphite (S 2 O 5 ), hydrosulphite (S 2 0 4 ), sulphite (SO 3 ), bisulphite (HS0 3 ), citrate or tartrate. The potassium hydroxide solution is preferably in the liquid phase at a temperature of 270-300‹ C. when the clarifying compound is added. The alkali metal is preferably sodium citrate or potassium sodium tartrate.
Patent GB-1082827-A (GB)
Title: Pigment carrier compositions and their uses
IPC: C08J3/22
Filed: 1964-10-08
Abstract: A composition comprises a mixture of amorphous polypropylene having a viscosity at 150 DEG  C. within the range of from 5000 to 300,000 cps. and a low molecular weight crystalline polypropylene having an inherent viscosity within the range of from 0.2 to 1.1. The composition is mixed with a pigment or dyestuff in an amount of up to 150% by weight of the weight of polypropylene to form a master-batch of uniform composition.  The master-batch may then be used for colouring polyethylene, polypropylene, or polyallomer. The composition may contain an antioxidant, e.g. a dialkyl phenol sulphide. The master-batch compositions may be dry-mixed or solvent-mixed.
Patent GB-1315416-A (GB)
Title: Differential mechanisms
IPC: F16H48/40
Filed: 1970-08-26
Abstract: 1315416 Planetary differential gearing EATON CORP 26 Aug 1970 [17 Sept 1969] 41012/70 Heading F2D A planetary differential gear 10 includes a clutch 30, e.g. as shown or a multiple disc clutch, Fig. 8 (not shown), or a jamming roller clutch, Fig. 10 (not shown), between the planet carrier 14 and one of the output gears 16 normally disengaged and engageable by apparatus including a member 46 rotated at a speed related to the difference in speeds of the output gears 16, 18, when this difference reaches a limit. The apparatus may include the centrifugal actuator claimed in Specification 1,315,418 in which the limit is varied with the rate of change of the difference. In the forms described at the limit the member 46 is braked thereby braking either the race of the jamming roller clutch, or a clutch member 32 moved axially by cam faces 36, 38 possibly by only an amount limited by stops 96, 98, Fig. 9, to engage the clutch.
Patent GB-930352-A (GB)
Title: Improvements in or relating to semi-conductor arrangements
IPC: H01L21/60
Filed: 1961-11-16
Abstract: 930,352. Semi-conductor devices. SIEMENS & HALSKE A.G. Nov. 16, 1961 [Nov. 16, 1960], No. 41021/61. Class 37. A contact member is soldered to an electrode of a semi-conductor device by means of a sandwich of a soft metal between layers of wetting material, the sandwich being assembled between the contact member and the electrode and the assembly being heated at least as much as is necessary to melt the wetting material. A soft metal is defined as one which is softer than that of the electrode or the contact member and a wetting material is defined as one with a melting-point less than that of the electrode, the contact member, or the soft metal. The wetting material may be rolled on to the soft metal before the sandwich is assembled between the contact member and the electrode. As shown in Fig. 2, the invention is applied to a transistor with an aluminium base 8 and a gold/ antimony emitter 7 on a semi-conductor body 6 of P-type silicon. The collector electrode 12 is of gold and is soldered to an iron heat sink 14 by means of the sandwich 2, 3, 4, of lead between layers of indium. Soldering is effected by heating the assembly to 160 C. in a protective gas atmosphere. The transistor is hermetically sealed in a cap 9 on the iron plate 14.
Patent GB-1359721-A (GB)
Title: Fabric draw-off device in circular knitting machines
IPC: D04B15/88
Filed: 1971-09-02
Abstract: 1359721 Knitting-machines; take-down FOUQUET-WERK FRAUZ & PLANCK 2 Sept 1971 41074/71 Heading D1C The take-down device of a circular machine comprises at least two spaced rollers 14, 15 arranged to be wrapped over half their total periphery by a fabric 1 which is urged against the last roller by a spring urged roller 16 engaging it in the vicinity of the point B3 where it leaves the roller. The rollers are driven by levers 23, 24 through over-running clutches 25, 26 on the shafts 19, 20 and via springs 31, 32 housed in the rollers and attached to the shafts and rollers. The levers may be oscillated by a cam ring (46 Fig. 4 not shown). The rollers may also be geared together. Tension on the fabric may be released during long stoppages by counter-rotating one roller by means of a lever.
Patent GB-1402582-A (GB)
Title: Process for the manufacture of phosphorus-containing conden sation products the products and their use as flameproofing agents
IPC: D06M15/431
Filed: 1972-09-05
Abstract: 1402582 Flame-proofing materials CIBAGEIGY AG 5 Sept 1972 [14 Jan 1972] 41102/ 72 Heading DIP [Also in Division C3] Materials especiallly fabrics are flameproofed with condensation products obtained by condensing 1 mol of a tetrakis(hydroxymethyl)-phosphonium compound with 0.02 to 1 mol of a compound of formula or its salt, where R is hydrogen, hydroxyl or an optionally substituted aliphatic, cycloalipha'tic, aromatic or heterocyclic radical, at 40 to 120C, optionally with formaldehyde or a formaldehyde-releasing agent and optionally in an inert organic solvent. The condensation may have been continued at 100 to 150C and free hydroxyl groups may have been etherified. The fabrics are flameproofed by applying to them aqueous compositions containing the condensation products together with polyfunctional epoxides or polyfunctional nitrogen compounds. In examples te'trakis-(hydroxymethyl)- phosphonium chloride and hydroxide are condensed with hydrochloric acid salts of compounds of the above formula where R is hydrogen and where R is methyl: in one instance formaldehyde is present and in another the product is etherified with methanol: aqueous compositions containing the condensation products together with dimethylolmelamine as a polyfunctional nitrogen compound, are applied to fabrics of polyester mixed with cotton, and of wool and cotton, the fabrics then being dried and heated, heated while moist and partially dried and then contacted with ammonia, to cure the condensation products.
Patent GB-1312409-A (GB)
Title: High-speed hydraulic forging press
IPC: B21J7/14
Filed: 1971-09-06
Abstract: 1312409 Forging presses GFM GES FUR FERTIGUNGSTECHNIK UND MASCHINENBAUAG 6 Sept 1971 [7 Oct 1970] 41416/71 Heading B3H A high-speed forging press comprises a pair of oppositely acting punches 2 actuated hydraulically for a working stroke and provided with mechanical stroke adjustment devices. The adjustment devices each comprise two or four power screws 15 each engaged with a nut 12 force-fitted in a piston 10. The nut has external splines 13 engaged with a fixed flange 14 to prevent rotation of the piston. The screws are driven by a worm gear train 16 driven in unison with the gear trains of the other screw or screws of each device. The end of each screw has a convex face 17 engaged in a concave recess in a pad 18 mounted with a slight lateral play in the punch. The pistons 10 each have a short stroke and perform a large number of strokes per minute. The workpiece is held by jaws (5), Fig. 2 (not shown), of gripping head (4) and also supported by devices (6) on each side of the press.
Patent GB-1477148-A (GB)
Title: Electro magnetic torque motor
IPC: H01F7/13
Filed: 1974-08-12
Abstract: 1477148 Torque motors LUCAS INDUSTRIES Ltd 12 Aug 1974 [5 Sept 1973] 41720/73 Heading H2A In a torque motor wherein a pivotally mounted permanent magnet 16 has two faces 18a, 19a lying adjacent two faces 12a, 13a of a pair of polepieces 12, 13 of a yoke 10, thereby forming two air gaps 20, 21, a coil 22 on the yoke may be energized to subject the magnet 16 to a torque which depends on the magnitude and direction of the current in the coil. The faces 12a, 13a, 18a, 19b are located on arcuate surfaces which are concentric with the pivot axis 15 of the magnet 16, and as a consequence the lengths of the air gaps 20, 21 remain constant, and the rate of increase of reluctance of one gap is the same as the rate of decrease of reluctance of the other gap as the magnet 16 rotates. For each direction of current flow in the coil 22, the flux C, D provided by the coil 22 enhances the flux A, B provided by the magnet 16 in one gap, and opposes it in the other.
Patent GB-1279274-A (GB)
Title: Electronically controlled timepiece
IPC: G04G3/02
Filed: 1969-08-21
Abstract: 1279274 Transistor oscillators HAMILTON WATCH CO 21 Aug 1969 [16 Oct 1968] 41857/69 Heading H3T [Also in Division G3] An electronic frequency standard for use in driving a watch (see Division G3) comprises a free-running multivibrator (Fig. 2) which includes two pairs 20, 22 of metal oxide semiconductor transistors. Each pair comprises one N-type and one P-type transistor, the former being non-conducting when the latter is conducting and vice versa. The circuit produces complementary, square wave outputs F and F at a frequency dependent on the values of a resistor 70 and a capacitor 68. The outputs F and F are fed to a frequency divider comprising a chain of identical stages each of which divides the frequencies of its two inputs by two until a signal having a frequency of one Hz is obtained. Each stage (Fig. 5) consists of logic pairs 106, 124, 144, 146 of metal oxide semi-conductor transistors and pairs 78, 92, 140, 142 of similar transistors which provide feedback connections between logic pairs. Integrated circuit construction is employed.
Patent GB-889897-A (GB)
Title: Improvements relating to rocking chairs
IPC: B60B33/06
Filed: 1960-12-06
Abstract: 889,897. Rocking chairs. VARRAN, L. T. Dec. 6, 1960, No. 41900/60. Class 52(2) A rocking chair has front end and back end supports which can alternatively or both be projected into engagement with the floor by an occupant of the chair to maintain the chair in one of at least two stabilized positions. As shown in Fig. 1, the supports are in the form of wheels 4, 15 at the front and rear of the chair. The wheels 4 may be retracted or projected by movement of a lever 14 located beneath an arm rest 2. A similar lever 26 is provided to retract or project the wheels 15. The wheels may be replaced by castors or by legs.
Patent GB-1368108-A (GB)
Title: Weighing devices
IPC: G01G19/04
Filed: 1971-09-09
Abstract: 1368108 Weighing apparatus TRANCON A B 9 Sept 1971 [21 Sept 1970] 42172/71 Heading G1W A device for weighing rail-guided vehicles comprises two vehicle supporting portions 1 transversely connected by a connection 2 and supported by load sensing means 3 on the rails, or support therefor, on which the vehicles run, the connection 2 allowing the portions 1 to move angularly relative to one another about an axis perpendicular to the rails and in the plane thereof. As shown the load sensing means 3 comprises shear stress sensing load cells orientated transversely to the rails and supported in openings 4 in the rails. In other embodiments the load sensing means 3 are mounted on the rail support, and may be located longitudinally of the rails. As in Fig.5 (not shown) the portions 1 may be joined at each end to the main rails by elastically deformable friction-free joints (14). In one embodiment Fig.6 (not shown) the portions 1, instead of replacing sections of the main rails, are supported parallel to and within the main rails.
Patent GB-1127241-A (GB)
Title: Improvements in or relating to axial flow fans
Inventor: ORR JAMES MALCOLM ROBERTSON
IPC: F04D29/64
Filed: 1964-10-16
Abstract: 1,127,241. Axial-flow fans. SMITHS INDUSTRIES Ltd. Sept. 28, 1965 [Oct. 16, 1964], No. 42229/64. Heading F1C. In an axial-flow fan each blade has a radially inner portion 22 of substantially constant pitch angle and width and a radially outer portion having a pitch angle and width which decrease in the radially outward direction. The blades may be formed of sheet aluminium and are riveted to the arms 14 of a spider of sheet material, e.g mild steel. The arms have holes for balance weights. The diameter of the fan is 18 inches, the radial length of the portions 22 is 1 inch, and the radius of curvature between the leading and trailing edges is 6À4 to 6À5 inches. In a fan of 12 inches diameter the pitch angle of the radially outer blade portions decreases from between 35 and 36 degrees adjacent the portions 22, to between 21¢ and 22¢ at the tips. The fan may be arranged in a peripheral shroud secured to a fixed support and connected to the driving motor casing by pivoted links so inclined to radii from the rotational axis as to be placed in tension by the torque reaction, Figs. 6 and 7 (not shown).
Patent GB-1423956-A (GB)
Title: Heated conveyor
IPC: C03B29/06
Filed: 1974-09-30
Abstract: 1423956 Treatment conveyer BALL BROS SERVICE CORP 30 Sept 1974 [9 Oct 1973] 42376/74 Heading B8A [Also in Division C1] An endless belt is supported on hollow rails which are provided with gaseous fluid which is emitted in a stream through ports in the rails and openings in the belt to treat articles carried on the belt. In the figure, glassware en route from a forming machine to a kiln, is carried by endless chain 25 supported on rails 14, 15 and guided therealong by rollers 34, 35. Rails 14, 15 are hollow and parallel and are supplied with gaseous fluid via pipeline 18 and branch ducts 20, 21. The fluid escapes through ports 23, 24 and through the belt to be ignited above the belt and surround the conveyed article in flame. The apparatus may also be used to supply the article with warm air, atmospheric air, or chilled air.
Patent GB-918687-A (GB)
Title: Improvements in or relating to gear selector mechanisms
Inventor: GILES IVOR EDWARD
IPC: F16D23/06
Filed: 1960-12-12
Abstract: 918,687. Positive clutches. FORD MOTOR CO. Ltd. Sept. 21, 1961 [Dec. 12, 1960], No. 42692/60. Class 80 (2). In a change speed gear having three synchromeshed forward ratios and a non-synchronized dog-engaged reverse, pressed sheet metal inserts 1, expanded by spring rings 3 to engage a central groove 1a in an axially slidable selector sleeve 2, assist synchronization of the first gear 5 when moved by the selector sleeve into engagement with a balk ring 4, but, on movement of the selector 2 in the opposite direction for engagement with the non-synchronized reverse gear 6, are centrally retained by tags 1b formed on the inserts, engaging a hub 7, preventing contact with the reverse gear 6, thus avoiding insert wear.