baber/WOPTO huggingface dataset:
Patent GB-1295991-A (GB)
IPC: C09B43/36
Filed: 1970-05-05
Abstract: 1295991 Anthraquinone dyestuffs; printing inks BAYER AG 5 May 1970 [17 May 1969] 21623/70 Headings C4A and C4P [Also in Division C3] The invention comprises dyestuffs of the Formula I: where R and B are substituents, A is a single bond or a divalent organic radical, X is -SO 2 - or -CO-, n is 1 or 2 and p is 0 to 6. The dyestuffs of Formula I may be prepared (a) by reacting an anthraquinone of the Formula II: with a reactive derivative of an acid HO-X-B or (b) by acylating an anthraquinone of the Formula III: with at least n mols. of a reactive derivative of an acid of formula or with at least n mols. of a reactive derivative of an acid HOOC-A-COOH and subsequently reacting the acylated product with at least n mols. of a hydrazide B-X-NH-NH 2 . Suitable reactive derivatives of the acids are the acid halides or alkyl esters. The starting materials of Formula II may be obtained by acylation of a compound of Formula III. The substituents R may be the same or different and may be halogen, nitro, amino, C 1-18  alkylamino, cycloalkylamino, arylamino, C 1-18  alkylcarbonylamino, arylcarbonylamino, hydroxyl, alkoxy, alkyl- or optionally substituted phenylmercapto, alkyl- or optionally substituted phenyl-sulphonyl, carboxyl, carbalkoxy, optionally substituted carbamoyl, acyl, optionally substituted sulphamoyl or optionally substituted phenylsulphonylamino. The substituent B may be an optionally substituted alkyl, cycloalkyl, aralkyl, aryl or heterocyclic radical. The dyes of the invention may be used for pigmenting coating compositions or for mass colouring polymers, paper pulp or vulcanizable products. A violet printing ink (Example la(f)) is manufactured by grinding 1,4-bis {4-[3-(2,5-dichlorobenzoyl) - carbazoyl] - benzoylamino} - anthraquinone in a finely divided state with linseed oil and adding as a drier Co naphthenate (50% strength in white spirit).
Patent GB-1296602-A (GB)
IPC: H04J3/10
Filed: 1970-11-24
Abstract: 1296602 Active filters INTERNATIONAL STANDARD ELECTRIC CORP 24 Nov 1970 [27 Nov 1969 (2)] 55784/70 Heading H3U In a method of filtering an a.f. band out of a wide-band input signal, the input signal is periodically integrated over first fixed time intervals, the obtained integrated values are stored for second time intervals, either half or twice the duration of the first intervals, and the output signal is formed by combining the stored values. In one embodiment, Fig. 1a, switches S11, S12, S13 each close for a period T to feed the input signal Ule to integrators J11, J12, J13 respectively, the times at which the switches close being staggered by periods T/2. At the end of each period T the switches open, for a period T/2, and the corresponding output switches S14, S15, S16 close for a period T/2 to sequentially feed to the output U1a, the signals stored in each of the integrators. The integrators are then reset by signals on R11, R12, R13. The resulting frequency response has poles at harmonics of the frequency 1/T. In a second embodiment. Fig. 2a, the input signal is applied to a first integrator J21 periodically reset at times T, 2T, 3T . . . &c. and to a second integrator J22 periodically reset at times T/2, 3T/2, 5T/2. . . &c. At the instant before resetting, the signal stored in each integrator is applied to a storage capacity Sp by momentarily closing an associated switch S21, S22. In a third embodiment, Fig. 8a, the input signal is applied to a single integrator J3 which is reset at intervals T/2. Switches S31, S32 alternately close before each resetting instant so that the signal in the integrator is alternately stored in capacitors Sp31, Sp32, which are connected to summing amplifier Su. If a number of stages are connected in cascade, the summing circuit of one may be combined with the integrator of the next Fig. 9 (not shown). An equalizer (E) may be connected with a chain of filter network either in cascade, Fig. 4 (not shown), or in parallel Fig. 6 (not shown). A suitable form of equalizer, Fig. 7 (not shown), comprises an input switch (S9) which alternately connects the input to two capacitors (C91, C92) and an output amplifier DV for summing the signals stored on the capacitors.
Patent GB-1297148-A (GB)
IPC: B61G7/10
Filed: 1969-11-28
Abstract: 1297148 Railway vehicle draw gear GERMANY MINISTER OF TRANSPORT 28 Nov 1969 58248/69 Addition to 1207516 Heading B7T In an improvement in the central buffer coupling mounting claimed in claim 1 of parent Specification, stop wedges 9 which constitute stops for a spring assembly 19 on tractive or buffing loading are provided. The wedges 9 are held by securing wedges 8 which are located between the wedges 9 and stops 7 which are integral with the housing 2 of the assembly 19. Each securing wedge 8 is secured by a nut and bolt 6 to the associated side wall of the housing 2. The assembly 19 includes end plates 13 and 17, the wedges 9 having inwardly directed shoulders 15 forming abutments 10 to limit movement of a coupling arm 3 and yoke 5 during tractive loading. The wedges 9 also have end surface abutments 11 against which the plate 13 of the spring assembly 19 is braced on tractive loading, the abutments 11 being at the ends of the wedges 9 remote from the abutments 10. The end plate 17 abuts inturned portions 18 of the housing 2. The inner surfaces of the stops 7 and the wedges 8 slope obliquely towards an aperture of the housing 2 so as to allow horizontal deflections of the shank 3 when in use. The inner surfaces of the wedges 9 are parallel to the parallel side wall portions of the housing 2 so as to form guides for the yoke 5 on tractive and compressive loading.
Patent GB-1297338-A (GB)
IPC: F23Q3/00
Filed: 1971-04-19
Abstract: 1297338 Piezo-electric generators JUNKERS & CO GmbH 19 April 1971 [5 March 1970] 23172/71 Addition to 1242207 Heading H2A In a gas igniter according to the parent Specification a sleeve 24 is formed integrally with the trigger 27 and stresses a striker spring 26 when displaced on operation of the trigger. As shown, the sleeve 24 surrounds a housing 13 containing the holder 16 for the piezo-electric elements and has a pair of cut-away portions 241 receiving the ends of a transverse pin 23 carried by a hammer 22 located within the housing 13 which has axial guide slots for the pin. In the normal position of the hammer shown, the leading edge 221 thereof rests on an edge 31 of a cut-away portion of housing 13. Displacement of the sleeve on operation of the trigger causes cam surfaces 243 on the portions 241 to displace the pin 23 and release the hammer from the edge 131 so that it strikes the piezo-electric elements under the action of spring 26. The sleeve and trigger are returned by a spring 25 and further cam surfaces 242 on portions 241 engage pin 23 and re-set the hammer in engagement with edge 131.
Patent GB-1302354-A (GB)
IPC: G01R27/26
Filed: 1970-04-27
Abstract: 1302354 Measuring leakage resistance CULTON INSTRUMENTS Ltd 27 April 1971 [27 April 1970] 20185/70 Heading G1U In a method of measuring the leakage resistance of a capacitor under test C u , Fig.1, firstly a switch 3 is closed for a positive halfcycle of an A. C. supply so that the capacitor C u  and a relatively high capacity coupling capacitor C c  are charged in parallel, and then, during the non-active negative half cycle of the supply, the switch 3 is opened and the resulting current which flows through the coupling capacitor C c  and which will be proportional to the leakage resistance of the capacitor C u  (capacity C c  being assumed to be significantly larger than capacitor C u  is amplified by an operational amplifier A, the output of which is sampled at an appropriate time by opening a switch 4. In the preferred embodiment potentiometers P2 and P, Fig. 2, are arranged to supply bias currents to the amplifier the first P2 being set to compensate for leakage through the capacitor C e  and the second P being set so that a threshold circuit T connected to the output of the amplifier is only triggered when the leakage resistance of the capacitor C u  under test is sufficiently low. The arrangement is said to form part of a testing system in which successive capacitors are tested and the results are entered into a shift register (not described) which controls the operation of a reject mechanism further along a production line.
Patent GB-1303067-A (GB)
IPC: B03B5/66
Filed: 1969-06-16
Abstract: 1303067 Upward current classifiers WILKINSON RUBBER LINATEX Ltd 16 June 1970 [16 June 1969] 30321/69 Heading B2H [Also in Division G3] A sorting column 1 for a hindered settling classifier, Fig. 1, is provided at its bottom with a discharge passage 8 in which is positioned a constrictible sleeve valve 9 for controlling the discharge of classified material through the passage. Water is introduced at 5 into a chamber 2 and flows through a perforated plate 3 upwardly through the column 1 so as to take finer or lighter particles of particulate material, fed in at 4, over a weir 6 to be discharged through an outlet 7. The coarser or heavier particles are discharged via the passage 8 and the valve 9. The density of the water/material mixture in the column 1 is sensed by means of a sensor 10 connected to a ball valve 13 in a hydraulic circuit which also includes a water tank 14, a pump 15, a constant flow valve 16 and the sleeve valve 9. The valve 9, Fig. 5, has outer casing with an intermediate bulbous portion 17 extending between end flanges 18. Extending internally between the flanges is a rubber sleeve 19 which in its free condition defines a cylindrical flow path 20 but which can be flattened to constrict the flow through the valve 9 by means of hydraulic pressure applied to the space between the portion 17 and the sleeve 19, the portion 17 being provided with tappings 22 to admit water under pressure from the circuit for this purpose. When the density of the mixture in the column 1 falls below a predetermined value, the valve 13 closes and hydraulic pressure in the circuit builds up causing constriction of the valve 9 thereby cutting off the flow of coarser material and water through the valve 9 and restoring the density to the predetermined value. When the density increases above the value, the ball valve 13 opens allowing the water to flow freely to waste so as to reduce pressure around the sleeve 19 which relaxes and permits passage of material and water at a greater rate. In a slightly modified arrangement, Fig. 2 (not shown), the sleeve valve 9 is connected to the hydraulic circuit by means of a branch pipe. In a modified control system, Fig. 3, the valve 13 is controlled by means of a float 25 movable in dependence upon the level of water within a header tank 26 which in turn is controlled by a sensor in the form of a probe 27 extending downwardly into the water in the column 1.
Patent GB-1306648-A (GB)
Title: Deveice for braking a mechanical stepping drive
IPC: F16H31/00
Filed: 1971-06-17
Abstract: 1306648 Ratchet mechanisms HOLZER PATENT AG 17 June 1971 [17 June 1970] 28458/71 Heading F2Q To regulate the speed at which a cam actuated spring loaded pawl 1 of a programme control switch ratchet mechanism makes its driving stroke and hence prevent excessive burning of the switch contact surfaces and additionally control, i.e. prevent overfling of the pawl 1 and programme switching cam wheel 4, a rack 8 on the spring loaded pawl 1 meshes a pinion 9 which is rigid with a freely rotatable mass, i.e. flywheel 3 whereby rotation of the flywheel mass 3, by absorbing part of the energy of the pawl spring 15 as the pawl 1 passes the step of the snail cam 7, acts as a dashpot during the driving stroke of the pawl, the length of the rack 8 being such that it disengages from the pinion 9 at the end of the pawl driving stroke permitting the accelerated flywheel 3 to run down free from engagement with the pawl. The flywheel and pinion shaft may be resiliently mounted for ready re-engagement of the rack and pinion teeth and the flywheel 3 may have fan blades to additionally utilize air resistance in its function. An additional spring loaded lock pawl 18 assists in positioning the cam wheel 4 at the end of each driving stroke of pawl 1.
Patent GB-1308816-A (GB)
Title: Method for making hollow articles
IPC: C08J9/06
Filed: 1970-11-05
Abstract: 1308816 Hollow ethylene copolymer articles IMPERIAL CHEMICAL INDUSTRIES Ltd 12 Oct 1971 [5 Nov 1970] 52709/70 Heading B5A Hollow articles are formed from a free-flowing composition comprising (a) a copolymer of ethylene with an ethylenically unsaturated comonomer which is a fatty acid and/or ester of 3-8 carbon atoms (b) a cross-linking agent and (c) a foaming agent by rotational moulding above the softening point of the copolymer and cooling to solidify it. The comonomer may be vinyl acetate, comprising 15-28% by wt. of the copolymer. The composition may also include talc, chalk, e.g. whiting, clay, silica, dolomite, titania, barium sulphate or carbon black as filler and a tack resin to increase adhesiveness such as a glycerol or pentaerythritol ester of a hydrogenated wood resin. Powdered polythene powder may also be added.
Patent GB-1326163-A (GB)
Title: Methods of and plants for burning cement
Inventor: HASTRUP N E
IPC: C04B7/60
Filed: 1971-02-22
Abstract: 1326163 Making cement F L SMIDTH & CO AS and NIRO ATOMIZER AS 19 Nov 1971 [22 Feb 1971] 5124/71 Heading C1H In making clinker from raw materials having a high alkali cement in a rotary kiln equipped with a raw meal preheated, part of the gases from the kiln by-pass the pre-heater as a separate flow into which water is atomized so that the alkali is struck by the water and all the water is vaporized by the hot gas the alkali being precipitated from the gas as a fine dry powder, the gas being simultaneously cooled. The atomized water can contain a carrier which if it is a fertilizer becomes alkali enriched. The carrier can also be raw meal; a readily filtrable substance, e.g. sand; or previously precipitated alkali. The amount of gas by-passed varies according to the alkali content of the raw meal, and the water inserted varies according to that of the gas by-passed, and also its temperature after it has been cooled in the spray drying.
Patent GB-1326232-A (GB)
Title: Grinding machines
IPC: B24B53/00
Filed: 1970-10-24
Abstract: 1326232 Grinding; truing grinding wheels TOOLING (WOODFORD) Ltd 24 Oct 1970 50641/70 Heading B3D A grinding attachment for a grinding machine comprises an arrangement 44, 45 for accurately fixing the attachment to the grinding machine 40, a member 50 rotatably supported on the arrangement 44, and means clamping a high speed grinder 60 to the member, the grinder having a spindle for rotating a relatively small diameter grinding wheel 9 at a relatively high speed, rotation of the member moving the grinding wheel between an operative position and a position in alignment with a dressing apparatus on the grinding machine. The spindle 41 of the grinding machine normally mounts a grinding wheel of 7- diameter rotated at 2,800 r.p.m.. When it is desired to use a wheel 9 of, say 1- diameter, the normal grinding wheel is removed from the spindle and a block 44 accurately positioned on the face 1 of the machine by a setting block 45 engaging the spindle 41, the block being secured to the face by screws. When the setting block is removed, a bracket 46 is secured to the block 44 and has a spindle 49 on which the member 50, in the form of an arm, is rotatably mounted. The end of the arm has a clamp 61 for a grinder 60 which is rotatable at a high speed, e.g. 50,000 r.p.m., and has a spindle for the small diameter grinding wheel 9. An extension 55 of the member is formed with a bush 57 for a pin 56 which is engageable with one or other of a pair of sockets 58 on the bracket 45 selectively position the grinder for operating on a workpiece 43 or for dressing of the wheel 9 by a dressing device such as that described in Specification 844,143.
Patent GB-1331422-A (GB)
Title: Liquid skimmers
IPC: E02B15/04
Filed: 1970-09-28
Abstract: 1331422 Floating booms B G RAYNER 28 Sept 1970 [10 July 1969] 34762/69 Heading E1H [Also in Divisions B1 and F2] A skimmer for collecting floating oil 4 has a tubular member 1 extending between vessels 2 and furnished with floats 8, a sealed buoyancy-section 10, liquid-inlet passages, or "troughs", 12 between bulkheads 16, a reservoir 14 and a valve plate 35 controlling a passage 17 between each trough and the reservoir, the plate being raised to an open position by floats 38 thereon when there is sufficient liquid in the trough. Oil and water is drawn from the reservoir into tanks 7 by pumps 6. Baffles 44 equalize the suction (due to the pumps) in the various passages 17. Apertures 42 allow water to enter a portion 13 of the member 1. The floats 8 may be dispensed with and the member 1 may be made of a buoyant material. (For Figures see next page)
Patent GB-1334160-A (GB)
Title: Apparatus for bead-forming on can bodies
IPC: B21D17/04
Filed: 1971-05-24
Abstract: 1334160 Corrugating BORDEN Inc 24 May 1971 16636/71 Heading B3E Slipping of the inner and outer surfaces of can bodies relative to internal beading dies 28, Fig. 1, and a beading rail 26 respectively driving the formation of beads is prevented by an internal beading die driving means comprising a stationary rack gear 43 having teeth whose pitchline is a circle having a diameter substantially comparable to that of the can body engaging surface E, Fig. 13, of the rail 26, a pinion gear 44 connected to each of the dies and having a pitchline diameter identical to the diameter of the can body engaging periphery 39 of the dies, and means, 72, 76, e.g. universal joints for maintaining the pitch-line diameter of the pinion gears in tangential relation relative to the pitchline of the teeth of the stationary rack gear despite deflection of the dies radially outward relative to the beading rail. In operation a frame 32 is rotated and the can bodies are fed by bead forming stations 27, Fig. 2, along an annular path 21. The dies 28 are mounted on carriages 29 which are cammed so that the dies enter the can bodies when the latter approach a bead forming portion 26<SP>1</SP> of the rail 26. At this point spring biased arms 35, Fig. 10, yieldably urge the dies 28 towards the portion 26<SP>1</SP> so as to press the can bodies firmly against the portion 261.
Patent GB-1336844-A (GB)
Title: Voltage sensing circuit
IPC: G01R19/165
Filed: 1970-11-17
Abstract: 1336844 Transistor bi-stable circuits PAGE ENG CO (SUNBURY-ON-THAMES) Ltd 17 Nov 1970 [17 Nov 1969] 56140/69 Heading H3T In a voltage sensing trigger circuit including a pair of potentiometers 13, 14 connected in series between first and second input terminals 11 to which a voltage to be monitored is applied, a switching amplifier 15, 17 has its input connected between the second input terminal and the tapping of the first potentiometer 13 and derives its power supply from the input terminals and a feedback connection is connected between the output of the amplifier and the tapping of the second potentiometer 14 so that the adjustment of the first potentiometer 13 determines the upper voltage level at which the amplifier switches on and the second potentiometer thereafter serves to adjust the lower level at which it switches off without disturbing the upper level since there is no feedback when the amplifier is switched off. If the supply voltage across the terminals 11 exceeds the upper level set by the potentiometer 13 the transistors 15 and 17 turn on and positive feedback via a diode 18 holds this state. When the voltage across the terminals 11 falls below a lower limit set by potentiometer 14 transistors 15 and 17 turn off. When the input between terminals 11 exceeds the upper level and transistor 17 turns on, transistors 24, 25 and 22 of a time delay circuit 27 also are turned on to operate a relay 19 so as to indicate the upper level has been exceeded. On the input between terminals 11 falling below the lower level with transistor 17 off the transistors 24, 25, 22 remain on for a delay time determined by the discharge of capacitor 21 so that the relay 19 remains energized for this delay time. A capacitor 25 and a Zener diode 26 provide the operation potential for the circuit for a sufficient time to operate the relay 19 if a drop or failure of the test voltage occurs. Zener diodes 12 and 16 make the sensing circuit temperature-compensated since changes affect the circuit in opposite ways which tend to balance one another.
Patent GB-1338696-A (GB)
Title: Variable geometry ornithopter
IPC: B64C33/02
Filed: 1971-04-23
Abstract: 1338696 Ornithopters D V CURRY 18 July 1972 [23 April 1971] 10936/71 Heading B7W An ornithopter comprises a pair of wings which are flapped about an axis JK, each wing comprising respectively an inner portion A, B and an outer portion C, C1 which outer portions may be adjusted in azimuth about axes H, H1, and in pitch about axes coincident with spars O, O1. The portions A, B are connected to a framework comprising members R, S connected together by a cross-bar P and to the wing portions at W, W1 by hooped members M, N. When manually operated the lower ends of members R, S are attached to an operator's feet, Fig. 5, and the pivot provided at axis J, K is secured to a harness 10, 12, 14 secured to the operator's body and flapping movements are obtained by repeated movements of the operator's body from a crouched or half squatting position (Fig. 4, not shown) to the erect position shown in Fig. 5, movements of the wings being assisted by elastic members 20 and 22 and by the operator actuating cranked inner extensions of the spars, which extensions are guided by arcuate tracks L, L1.
Patent GB-1343023-A (GB)
Title: Termic lance holders
IPC: E21B7/14
Filed: 1971-04-19
Abstract: 1343023 Thermic lance holders BRITISH OXYGEN CO Ltd 19 April 1971 [18 March 1970] 13073/70 Heading F4T [Also in Division F2] In a thermic lance holder, intended to improve economy of oxygen consumption, an insert 4 in a body member 10 contains one or more orifices 2 to significantly resist the flow of oxygen to the lance. The lance holder can be coupled at one end to a high-pressure oxygen hose or similar conduit 12 and can also be secured at its other end, directly or indirectly, to one end of the thermic lance. In one embodiment (Fig. 1) the oxygen conduit 12, leading to a regulator valve (not shown), is screw-threaded and received by the tapped end of body member 10. The insert 4, containing one orifice 2 and a frusto-conical tapped recess 6 suitable to receive a lance end, is held in a recess 8 by a retainer 28 using a bayonet and slot connection. A flange 30 and a recess 32 can be of non-circular complementary cross-section to prevent rotation. A turbulence removal device includes a flow distributer 18 and porous layers of gauge or similar material 22 separated by spacers 20. An annulus of rubber or similar resilient material 24 is partially compressed when a lance is in position, to prevent movement. In another form (Fig. 2, not shown) the recess 8 is tapped to receive a screw-threaded insert secured by a grub screw.