baber/WOPTO huggingface dataset:
Patent GB-1281408-A (GB)
Title: Trip valve system
IPC: F16K31/363
Filed: 1969-10-07
Abstract: 1281408 Fluid-pressure servomotor systems WORTHINGTON CORP 7 Oct 1969 [8 Oct 1968] 49277/69 Heading F2V [Also in Division G3] A trip valve, which may be used to stop the flow of steam to a turbine under adverse operating conditions, comprises a valve body 14 having a fluid chamber communicating with the inlet and outlet 18, 21 of the valve, pressure responsive means 31 guided by means 35 within the chamber, and means 36 to bias the pressure responsive means to a position in which the valve is open. When the valve is open, inlet pressure is admitted to the spaces above and below the piston 31 by passages 45 and 30. A lever 13 opens a pilot valve 56 in response to overspeeding, high bearing temperatures or high exhaust pressures or in response to a manual or electrical signal to vent the space below the piston 31 and cause the valve 24 to close. Movement of the valve to the open position is cushioned by inlet fluid trapped in a recess 43 while a circular perforated screen 25 prevents dirt particles, pipe scale or weld spatter entrained in the inlet fluid from contacting the valve mechanism. In a modification, the valve may be actuated manually by a stop member which engages the upper face of the piston 31 and is adjusted by a handwheel on a screwed spindle. The stop member is provided with a recess which cushions the upward movement of the piston and may be used to hold the valve 24 in an intermediate position from which it may be closed automatically by the pilot valve. The valve is pivotally mounted about a centre 33.
Patent GB-1325809-A (GB)
Title: Combustion powered chemical laser and method
IPC: H01S3/0953
Filed: 1971-10-26
Abstract: 1325809 Lasers THIOKOL CHEMICAL CORP 26 Oct 1971 [29 Dec 1970] 49647/71 Heading H1C A gas laser uses the efflux from a solid fuel rocket motor as an active medium. The efflux contains species such as N 2 , CO and HCl in excited states which transfer their energy to CO 2  in the efflux, the excited CO 2  being the lasing species. Fig. 4 shows a motor 50 containing an oxidizer such as ammonium perchlorate and a hydrocarbon such as polybutadiene-acrylonitrile, the reaction products exhausting through a rectangular converging nozzle 53 into an atmospheric pressure duct 52. A beam from a separate laser 54 is amplified by its passage through the exhaust, as may be shown by measuring the beam intensity before and after the motor, at detectors 68 and 70. Other fuels include carbon black and anthracene; polypropylene glycol is an alternative to the hydrocarbons. The exhaust nozzle may be a single slot, or an array of smaller adjacent slots, Figs. 5 and 6 (not shown). The laser whose beam is amplified may be a CO 2  laser. The exhaust may pass inside the resonator of this laser, Fig. 7 (not shown), instead of outside it. In Fig. 8 the separate laser is not used, and the exhaust gas forms a laser generator with resonator mirrors 56 and 74. Modulation of the laser outputs is obtainable using a chopper in the cavity. Nozzle details, operating temperatures and pressures are given.
Patent GB-1240573-A (GB)
Title: Improvements in or relating to tween decks
IPC: B63B25/18
Filed: 1969-10-09
Abstract: 1,240,573. Removable decks. KALDNES MEK. VERKSTED A/S. 9 Oct., 1969 [10 Oct., 1968], No. 49729/68. Heading B7S. A stowable series of 'tween decks d 1 -d 5  is mounted between and movable along upwardly extending mutually spaced side-by-side guides g between a stowed position D in which the decks are substantially vertical and stacked side-by-side and an in-use position in which they are substantially horizontal and vertically spaced one above the other. Each deck is held in its in-use position and in the embodiment shown each is held in position by retractable supporting legs S and by a releasable locking arrangement between the deck and its guides. As shown a bottom 'tween deck d 6  is pivotable but has no guides.
Patent GB-1333232-A (GB)
Title: Method of grinding or checking involute helical gears and machine therefor
IPC: B23F5/00
Filed: 1970-10-20
Abstract: 1333232 Grinding gears W HOFLER 20 Oct 1970 [15 Dec 1969] 49767/70 Heading B3K [Also in Division G1] In a method of grinding or testing an involute helical gear the tool or tracer is moved back and forth along the lines of contact on the tooth flank whilst the gear moves in rolling contact with the tool or tracer, the length of stroke of the tool or tracer being at its greatest, equal to the length of the longest lines of contact plus idle travel, at each end of the stroke, and imparting an additional feed motion to the tool or tracer in the direction of the back and forth movement, when the traced lines of contact become of substantially equal length to the stroke, so that the area of tooth flank covered by the strokes is gradually shifted through the total length of the tooth flank. In Figs. 3-5 the areas ABCD represent the developed tooth flank of Fig. 2, and the vertical lines represent the back and forth stroke movements of the tool or tracer. In Fig. 3 it can be seen that the area covered by the back and forward movements of the tool when out of contact with the tooth flank is large. Whereas in Figs. 4, 5 according to the method, this area is considerably reduced, so that the operating time on each flank is reduced. In a grinding machine for carrying out the method, the workpiece 8, Figs. 6, 7, is mounted on a table 9 which pivots about the workpiece axis and can also move along this axis. A grinding wheel 7 is carried by a carriage 6 which is movable along a slide 5 by a motor-driven lead screw 10, and slide 5 is adapted to be set at the tooth angle of the workpiece and moved in the direction of this angle by a crank 3 driven by an electric motor 2. The base for starting the tool stroke is the line 2, 2<SP>1</SP> in Fig. 4, and this shifting of the base from line A, S, is accomplished by feeding carriage 6 along slide 5 during the reciprocating feed of the latter and this is done by lead screw 10 which is controlled by a sine bar 12 which co-operates with a feeler 12 guided on table 9. In order to achieve maximum saving of machining time the length of stroke of slide 6 must be varied in dependence of the rolling distance S, as shown in Fig. 5, this can be achieved by means of a programmed control. In a modification, the gear grinding machine Fig. 8 comprises a slide 22 on which the grinding wheel 23 is mounted, the slide being adapted to be set at the tooth angle and reciprocated by an hydraulic cylinder 24. The points of reversal of the tool stroke are controlled by an electric switch 27 which cooperates with stops 28 whose positions are varied by a lead screw 32 controlled by a follower 12 which slides along the sine bar 11. In a further modification, cylinder 24 is replaced by a lead screw.
Patent GB-1077846-A (GB)
Title: Improvements in or relating to travelling wave amplifier tubes
Inventor: HARRIS NEVILLE WREFORD
IPC: H01J23/36
Filed: 1964-12-07
Abstract: 1,077,846. Travelling wave tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Oct. 7, 1965 [Dec. 7, 1964], No. 49789/64. Heading H1D. A travelling wave tube of the kind in which microwave energy is coupled to or from the delay line by a waveguide or other high frequency transmission line has a coupling device which is of the coupling hole and tuning stubtype, the shape of which is not a circular shape symmetrical about the tube axis. A diaphragm portion through which the tuning stub projects may have radial slots in an otherwise circular aperture, or the aperture may be of elliptical, rectangular or irregular polygonal shape. In addition, the tuning stub may be bifurcated, or of elliptical, rectangular or irregular polygonal shape.
Patent GB-1484570-A (GB)
Title: Electric circuit-breaker apparatus
IPC: H02J13/00
Filed: 1973-10-27
Abstract: 1484570 Remote control of circuit-breakers LUCAS INDUSTRIES Ltd 14 Oct 1974 [27 Oct 1973] 50099/73 Heading H2H In remotely controlled circuit breaker apparatus, a first contact 41 is opened thermally, a second contact 45 is closed when contact 41 is opened and a pulse generator 12 is coupled to the circuit breaker 15 via a single conductor 26, a change-over switch 16 being provided so that, in a first position, the polarity of a single pulse on line 26 is such as to open contact 41 electromagnetically and, in the second position of change-over switch 16, the polarity is such as to close contact 41 electromagnetically, the second contact 45 being operable to apply a voltage signal to conductor 26 so as to energize an indicator 53. The invention is applicable for use in an aircraft as over-current protection between a D.C. bus-bar 42 and loads (not shown). Such an overload would cause contacts 41 to open thermally and close contacts 45, thus short-circuiting Zener diode 48 and closing a path between a negative D.C. supply 10 and earth so as to turn on transistor 55 and energize light-emitting diode LED 53. The circuit breaker 15 is reset by depressing change over switch 40 which allows positive pulses from generator 12 to energize the reset coil 44; tripping coil 43 being by-passed by diode 47. If change over switch 40 is set to its upper position, the polarity of pulses from generator 12 is reversed so that coil 43 is energized, opening contacts 41. Contacts 45 now close and operate the LED 53. In Fig. 4 (not shown) the LED 53 is operated by three thyristors, a unijunction transistor oscillator being included so as to produce a flashing indication when the circuit breaker is tripped thermally but a continuous indication when tripped manually. Fig. 2 depicts a block diagram of a pair of pulse generators for use in block 12 of Fig. 3, and has automatic change-over of the pulse generators under fault conditions.
Patent GB-1333236-A (GB)
Title: Cargo containers  or trailer bodies
IPC: B65D88/12
Filed: 1970-10-23
Abstract: 1333236 Containers STRICK CORP 23 Oct 1970 [23 Oct 1969] 50556/70- Heading B8P [Also in Division B7] A container, which may be an I.S.O. container having the usual corner fittings 110, has sides formed of a single unitary aluminium alloy sheet at least 5/32inch thick and a tensile yield point of at least 25,000 p.s.i. Front, side and roof panels 24, 28, 20 are continuously welded or riveted to frame members 50<SP>1</SP>, 70, Fig. 7, shaped at 78 to receive the edges of the sheets and the weld W. The frame members are cut to receive the corner fittings which are welded thereto, these members and fittings may have high ductility and a minimum tensile yield of 45,000 p.s.i. The floor is of wood or aluminium and has beams 38 of I, Z, or J section underneath. The roof is reinforced by members 122 fastened to top frame members 40, Fig. 2, and secured to the roof panel 20 by an. adhesive which may be a polysulphide rubber epoxy resin. Two doors, one hinged to each side, are provided at one end and their hinges incorporate a sealing strip (Fig. 8, not shown); alternatively there may be doors at both ends or a door in a side.
Patent GB-1167527-A (GB)
Title: Production of Magnetic Recording Media
Inventor: WERST GERHARD
IPC: G11B5/702
Filed: 1966-11-11
Abstract: 1,167,527. Polyamide-phenoplast compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 11 Nov., 1966 [13 Nov., 1965], No. 50624/66. Heading C3R. [Also in Division H1] A binder for securing ferromagnetic particles to a substrate (see Division H1) comprises a mixture of (I) 60 to 99% by weight of a copolyamide of (a) 20 to 60% by weight of at least one lactam having more than six ring members and (b) 80 to 40% by weight of a mixture of at least one dicarboxylic acid having 6 to 20 carbon atoms, the latter mixture having at least one aliphatic dicarboxylic acid or diamine of 6 to 20 carbon atoms and represented by the formula in which Z denotes -CH 2 NH 2  or -COOH, R is an alkyl radical having at least 2 carbon atoms, R<SP>2</SP> is hydrogen or an alkyl radical having at least 2 carbon atoms and x and y each denote an integer from 1 to 5, and/or p,p<SP>1</SP>- diamino dicyclohexyl methane, the copolyamide being soluble in an organic solvent, and ((II) 40 to 1% by weight of a reaction product of formaldehyde and an aromatic compound having a phenolic hydroxy group and suitable for the formation of a phenolic resin. Numerous suitable lactams or corresponding amino acids are mentioned. Lists are given of compounds of the above general formula and of other C 6-20  dicarboxylic acids and diamines which may contain aliphatic or aromatic ring systems. The phenoplasts may be derived from phenol, cresols or naphthols and may be modified by conventional additives; in examples, the phenoplast comprises a polyester of 1 mole of trimethylol propane and 0.8 mole of adipic acid as modifier. Various solvents and optional additives are mentioned.
Patent GB-1470199-A (GB)
Title: Objectives
IPC: G02B13/14
Filed: 1974-11-25
Abstract: 1470199 Objectives SOC D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE -SOPELEM 25 Nov 1974 [28 Dec 1973] 50943/74 Heading G2J An objective, e.g. for a camera, comprises four groups of lens elements in succession, the arrangement being such as to have an overall focal length F and:- (a) the first group comprising a convergent lens followed by a meniscus lens, the concave surface of the meniscus facing rearwardly, and the group being convergent with a focal length between 5 and 50F, (b) the second group having the front surface of the front lens convex and the rear surface of the last lens concave, the group being convergent with a focal length between 1.3F and 2.5F, (c) the third group having a double concave lens sandwiched between two double convex lenses and separated therefrom by narrow air gaps, the group being convergent with a focal length between 0.45F and 0.55F, (d) the fourth group being a diverging meniscus lens with its concave surface facing forwardly, the lens being divergent with a focal length between 0.3F and 0.4F. As shown in Examples the optical axis may be folded through 90 degrees by a prism between 2nd and 3rd groups and the second group may comprise two or three lens elements.
Patent GB-1407467-A (GB)
Title: Interference suppression circuits for radar receivers
IPC: G01S7/36
Filed: 1972-11-06
Abstract: 1407467 Pulse radar SIEMENS AG 6 Nov 1972 [5 Nov 1971] 51015/72 Heading H4D In a pulse radar subject to frequency-swept jamming, its effect is reduced by an arrangement incorporating two delay devices 10, 16 each producing a delay of a multiple integral of the wanted standard echo duration T. In the embodiment an M.T.I. pulse radar has a fixedecho eliminating filter 7 (which may be digital) and a rectifier 8 the video signal output from which Fig. 3a, consists for example of resultant jamming pulses S1, S2, S3 and a wanted echo N in one radar pulse recurrence period EP. A circuit 11 of threshold W produces the output Fig. 3b, and a detector 12 and delay 16 feeds inputs Fig.3c, 3d, into an "interference substitution" circuit 14 to which is applied also the delayed version Fig. 3e of Fig. 3a. A "substitution level" store is connected to circuit 14, the output from the latter being as shown in Fig. 3f. The delay in devices 10, 16 and the threshold W in device 11 may all be adjustable. The substitution level may advantageously be equal to the mean noise D.C. voltage which may also be the threshold W. The effect of the invention on a scanning beam radar is explained Figs. 4 to 6 (not shown). When C.W. jamming is experienced the invention may be disadvantageous; it is therefore arranged that under these circumstances it be switched out.
Patent GB-1324885-A (GB)
Title: Process and apparatus for establishing contact between fluids
IPC: B01J8/22
Filed: 1970-10-30
Abstract: 1324885 Gas/liquid contact apparatus SVENSKA FLAKTFABRIKEN AB 30 Oct 1970 [13 Nov 1969] 51813/70 Heading B1R Gas/liquid contact apparatus of the type comprising a bed of fluidised lightweight contact elements wetted by a liquid and confined between upper and lower perforated plates 12 and 11 has a liquid-collecting gutter 19 at the bottom of the zone containing the bed, and a gas entrance passage 10 to the bed, the velocity of the gas introduced therethrough being such that liquid is prevented from passing through passage 10 and is atomized upwardly. The amount of liquid withdrawn through the gutter 19 may be controlled by a plate 23 blanking off a portion of the gutter. As shown, liquid is supplied upwardly by pipe 15 to the contact elements but liquid may be supplied from above (pipe 15b) or laterally (pipe 15a) into the bed. The lower inwardly sloping walls of the contact zone may be perforated and the lower edge of the gas inlet passage may be outwardly flared (see Figs. 2a, b, not shown). The upper perforated plate may be inclined (see Fig. 3, not shown) or have inclined baffles positioned below it (see Fig. 4, not shown). Two or more of the contact zones may be arranged in a common housing and be traversed by the gas in parallel or in series (see Figs. 5, 6, not shown).
Patent GB-1330860-A (GB)
Title: Container
IPC: B65D1/26
Filed: 1970-11-04
Abstract: 1330860 Nestable container BELLAPLAST HELLER & CO 4 Nov 1970 [ 6 Nov 1969] 52501/70 Heading A4A [Also in Division B8] A container made from sheet material has an upwardly extending frusto-conical wall 1 and one or more rings of inwardly directed teeth 16 and outwardly directed ribs 6'. The container bottom 2 may be substantially flat or inset and may have an annular zone having radial stiffening ribs. The top of each tooth may be bevelled to form a shoulder that facilitates nesting. The ribs 6 may be triangular in cross section and may widen and deepen as they extend upwardly.
Patent GB-1451777-A (GB)
Title: Process for preparation of secondary aliphatic amines
IPC: C07C211/03
Filed: 1973-11-14
Abstract: 1451777 Secondary aliphatic amines HOECHST AG 14 Nov 1973 [14 Nov 1972] 52892/73 Heading C2C Secondary amines are made by reacting a C 7-24  aliphatic alcohol with ammonia in the presence of hydrogen and a hydrogenating- dehydrogenating catalyst at a temperature of 120-250‹ C. and a pressure of 0À5-6À0 atmospheres absolute, the ammonia and the hydrogen being passed through the alcohol at a combined gas rate of at least 50 litres per hour and per kilogram of alcohol and the water formed in the reaction being removed with the gas stream. The gas mixture may also include an inert gas (e.g. N 2  and/or CH 4 ). Reaction may be performed either by an "open" method or by a "closed" method in which the gases coming off from the alcohol are recycled. In the "closed" method, no outside source of hydrogen need be used, the hydrogen obtained by dehydrogenation of the reaction mixture sufficing. At the beginning of the reaction the gas flow may consist wholly or mainly of ammonia and at the end of the reaction the gas flow may consist wholly or mainly of hydrogen. Specified catalysts are cobalt and/or nickel with or without copper, and cobalt and chrome together with alkali metals or barium.
Patent GB-1057522-A (GB)
Title: Improvements in or relating to aluminous ore digester apparatus
Inventor: DONALDSON DONALD JOSEPH
IPC: C01F7/064
Filed: 1963-07-30
Abstract: <PICT:1057522/C1/1> An apparatus for continually digesting an aluminous ore suspended in a caustic aluminate liquor under conditions of high temperature and pressure, comprises a vertically elongated vessel having inlet and outlet for the liquor at opposite ends.  A plurality of horizontally spaced baffle rings divide the interior of the vessel into intercommunicating compartments. Within each compartment are located baffle plates which are rotatable about the axis of the vessel; each baffle plate is provided with a paddle, the major surface of which is arranged in a vertical plane.  The baffle plates may be attached to a rotatable shaft which is mounted within the vessel concentrically with the baffle plates; each baffle plate may be arranged midway between the baffle rings. The digester illustrated in Fig. 1 has a vertical cylindrical shell 10 made of a material resistant to the reactants and strong enough to withstand high temperature and pressure.  Baffle rings 12 are attached to the walls of the apparatus; these provide a large aperture 13 through which a vertical shaft 14 may rotate (e.g. by means of the motor 13) and which is provided with sealed bearings 18 and 19 to enable pressure to be used. Circular baffles plates 15 are secured to shaft 14. Each baffle plate is provided with a series of vertically disposed stirring paddles 16.  Figs. 2 and 3 (not shown) are enlarged drawings of the baffle plates in vertical and horizontal cross-section. The dotted line of Fig. 1 illustrates the helical flow of the liquor through the vessel.
Patent GB-1367948-A (GB)
Title: Process for dyeing cellulose fibres
IPC: D06P1/00
Filed: 1971-11-19
Abstract: 1367948 Dyeing cellulose with reactive dyes FARBWERKE HOECHST AG 19 Nov 1971 [20 Nov 1970] 53833/71 Heading D1B Cellulose fibres in the form of wound packagens of yarn or sliver are dyed by impregnating the package with a neutral to weakly acidic aqueous solution of one or more reactive dyes followed by injecting the package in at least two different places with at least two solutions of different alkalinity the dye being fixed either simultaneously with or subsequently to the injection of the alkaline solutions. The dye may be fixed by a steaming process and optional dwelling processes may be employed. The wound package and the alkaline solutions may be heated to 50‹ to 100‹C, preferably dyes having a vinylsulphone group being employed.
Patent GB-1237525-A (GB)
Title: Spring actuated clamping mechanism
IPC: B23Q7/14
Filed: 1969-11-03
Abstract: 1,237,525. Releasable fastenings. STANDARD TOOL & MFG. CO. 3 Nov., 1969 [4 Dec., 1968], No. 53898/69. Headings E2A and E2B. [Also in Division B3] A spring actuated clamping mechanism for a pallet 17 comprises a pair of axially movable clamping pins 19, 21 carried in a body which also carries a pair of plungers 27, 28 movable at right angles to the pins. Cam surfaces on the pins and plungers act to advance and retract the pins, and springs 43 urge the plungers towards a clamping position. An axially movable actuating rod 51 includes cam surfaces to move the plungers 27, 28 away from each other to retract the pins and compress the springs 43. The pallets 17 are moved along rails 59 by a reciprocating rod 14 having pins 13 which can be moved out of engagement with the pallet 17 for its return stroke, a pallet clamping mechanism is provided at each working station for clamping the pallet against the rails and a stop 24. Cam surfaces 35, 38 engage to quickly raise the pins and cam surfaces 34, 39 engage to clamp the pallet. Cam surfaces 36, 37 act to retract the pins when the plungers 27, 28 are forced apart against the springs 43 by cam surfaces 54 on the actuating rod 51. Rollers 48 on the ends of the plungers engage the cam surfaces in the actuating rod 51, but in the clamping position of the rod 51 the rollers 48 are free from the cam surfaces to allow the springs 43 to develop full clamping force on the pins. The clamping mechanisms are arranged in series with the actuating rods 51 acting on each other, and the series being actuated by rams (57), (58), (Fig. 1, not shown). The pin 21 includes a surface 25 which engages in the pallet to locate it, and pin 19 includes surface 23 for pushing the pallet sideways onto stop 24.
Patent GB-1100419-A (GB)
Title: Substituted chlorosulphamyl-anthranilic acids
IPC: C07D307/52
Filed: 1966-12-02
Abstract: Compounds having the formula <FORM:1100419/C2/1> (wherein Het is a furan, thiophene or pyridine ring and n is 2 or 3), and salts thereof, are prepared by reacting a halide of general formula <FORM:1100419/C2/2> (wherein Hal is a halogen atom and X is a hydroxyl, alkoxy, or amino group) with an amine of general formula H2N-(CH2)n-Het and thereafter, if necessary, saponifying the ester or amide group.  Pharmaceutical compositions, having diuretic action and suitable for oral or parenteral administration, comprise compounds of Formula (I) above, or their salts, in admixture with suitable solid or liquid pharmaceutical carriers or adjuvants; they may be in the form of tablets, dragees, capsules, solutions, suspensions or emulsions.