baber/WOPTO huggingface dataset:
Patent GB-1329686-A (GB)
Title: Electrical pulse generating systems
IPC: G01N29/11
Filed: 1971-02-11
Abstract: 1329686 Pulse generators; ultrasonic inspection devices; cathode ray tube circuits POLSKA AKADEMIA NAUK ZAKLAD DOSWIADCZALNY BUDOWY APARATURY NAUKOWEJ UNIPAN 11 Feb 1971 4427/71 Headings H3T H4D and H4T In a circuit for generating and regulating the time selection areas in ultrasonic pulse devices comprising a cathode ray tube and a time base generator 1 providing horizontal deflection of the cathode ray tube beam two parallel channels are provided each comprising a circuit 3, 6 for regulating D.C. voltage, an adder 2, 5 and a level detector 4, 7 connected in series, one of two inputs of each adder 2, 5 is fed from the the time base generator 1 and the outputs of the level detectors 4, 7 are connected to the inputs of a common shaping circuit 8, providing at its output a gating pulse, with the leading edge coinciding with an output pulse from the level detector in one channel corresponding to its input exceeding its threshold level and the trailing edge coinciding with an output pulse from the level detector in the other channel corresponding to its input exceeding its threshold level, which provides the vertical deflection of the cathode ray tube beam. The regulating circuits 3, 6 consist of variable voltage sources such as potentiometers (Fig. 3, not shown) and Fig. 4 connected so that any adjustment to 3 results in identical voltage changes at the outputs of 3 and 6. The operation level of the level detectors 4 and 7 are the same (Up, Fig. 2, not shown). The ramp voltage from 1 and the D.C. from 3 are added in 2 and when the voltage level (Up) of detector 4 is exceeded a pulse (U4) output is generated which opens the shaping circuit 8 causing it to produce an output pulse (U8). Similarly when the output from adder 5 exceeds the level of detector 7 this produces an output (U7) which closes the shaping circuit 8 causing it to end the output pulse (U8). By adjusting the regulating circuit 3 both the leading edges of the pulses (U4, U7) provided by the level detectors are altered by the same amount so the duration of the output pulse (U8) from 8 remains the same. If the regulating circuit 6 is adjusted, only the leading edge of the pulse (U7) from the level detector 7 is altered so as to adjust the duration of the output pulse (U8) from 8. The circuit may be used in an ultrasonic flaw detector.
Patent GB-1330313-A (GB)
Title: Composite structures
IPC: F16C3/02
Filed: 1970-09-23
Abstract: 1330313 Shaft couplings BRITISH AIRCRAFT CORP Ltd 22 Sept 1971 [23 Sept 1970] 45375/70 Heading F2U A composite structure (e.g. a shaft) comprising a metal portion 11 (e.g. one at each end) having a part 14 of smoothly-continuous, non-circular section without concavity (e.g. as in Fig. 2), and a plastics (e.g. epoxy resin) portion 10 largely adjacent the portion 11 but also overlapping, with (e.g. helically) wound (e.g. carbon) filament reinforcement, the part 14, whereby torque can be transmitted. The metal portion may have a local enlargement 13 so that axial load can be transmitted. Apart from the part 14, the structure shown has a circular cross-section. The structure may be formed by winding resin wetted filament on a suitable mandrel with the metal portions attached, the mandrel being melted out of the structure after the resin has been cured.
Patent GB-1331316-A (GB)
Title: Haulage apparatus and the like
IPC: B65H23/04
Filed: 1972-04-18
Abstract: 1331316 Monitoring hauling ropes G A BLACK 18 April 1972 [18 Jan 1971] 2360/71 Headings G1K G1M and G1W An apparatus for monitoring a hauling rope 23 for excessive tension, slip relative to a drive roller, speed and fraying comprises a roller 2 mounted on the end of a pivoted lever 5 and maintained in position against the tension in the rope by means of a device 7 (Fig.1) or 25 (Fig.4), device 7, 25 being such that it allows roller 2 to move downwards abruptly when the stress on the device reaches a predetermined value representing excessive tension in rope 23, to actuate a switch or valve 11 to shut down the rope hauling apparatus. The device may be a single Euler spring 7 (Fig.1) or a pair of Euler springs 25 (Fig.4) In Fig.1, movement of roller 2 operates switch 11 via Euler spring 9 and lever 10, and in Fig.4 a lever 29 is pivoted by arm 28 on lever 5 and frees a spring actuated plunger 31 which actuates switch 11 via lever 10. Any loose strands of the rope are caught by a probe 18 pivotally mounted at 20 so that switch 11 is actuated via a lever system. In the embodiment of Figs.1 and 3, switch 11 is arranged to be actuated when the rope speed exceeds a predetermined value, and when slip occurs between drive roller 1 and rope 3. Pumps 12 and 13 are driven by rollers 3 and 1 respectively and pump liquid through respective fluid restrictors 15 and 16, the pressures developed across the restrictors being applied to opposite sides of a diaphragm or piston 14. When slip occurs the pressure across restrictor 16 exceeds that across restrictor 15, and piston 14 moves downwardly and actuates switch 11 via lever 10. Pumps 12 and 13 are also provided with respective pressure relief valves 22 and 23, the latter being set to a higher pressure than the former. Consequently if the rope 23 is moving too fast so that the relief valves operate, piston 14 will be moved downwardly to actuate switch 11. In the embodiment of Fig.4 and 5 switch 11 is actuated if the rope speed is above or below respective predetermined valves. A pump 12 is driven by roller 3 and discharges into a vessel 35. The liquid in vessel 35 discharges through an adjustable orifice 36 so that the level of liquid in the vessel depends on the speed of pumping and hence the speed of roller 3. The vessel is mounted on the end of a pivoted lever 37 counterbalanced by weight 39 and spring 43. If the vessel is too full or too empty, the lever 37 tilts sufficiently for a cross-head 40 to actuate switch 11 via lever 10. Alternatively the level of the liquid may be sensed by a float.
Patent GB-1334856-A (GB)
Title: Heat sealing
IPC: B29C65/10
Filed: 1971-04-19
Abstract: 1334856 Seaming non-metallic sheet material PEMBROKE CARTON & PRINTING CO Ltd 19 April 1971 [14 April 1970] 17655/70 Heading B5K In heat sealing apparatus, means for supplying hot gas to a nozzle 7 comprises a heater 6, one or more heater by-passes B 1 , B 2  in parallel with the heater 6, valve means 5, 4 for controlling the flow of gas through each by-pass B 1 , B 2  and means for controlling the heat input of the heater 6 in response to the temperature of gas leaving the heater 6. A web W of carton lining material, e.g. polythene or polythene laminated to paper, paper and metal foil or a thermoplastic material of higher melting temperature than polythene, is converted from open-width form into flattened tubular form by the formation of a longitudinal seam by a hot gas with the polythene surfaces in contact. Draw rolls 34 pull the web W over an idler roll 20 and over a horizontal forming plate 15. Rollers 16 and guides 17 form the web into a flat tube with longitudinal edge portions 14 thereof held open by a predetermined amount by guides 18, 19. The flattened end 7a of a hot gas nozzle 7 is positioned between the two portions 14 to soften the polythene. A fin seal F is formed by passage between rollers 10 and is folded flat by a guide 13 before the tube is flattened by the draw rolls 34. Compressed air at a controlled pressure passes through a regulator 1 and flows from a pipe 3 into the nozzle 7, in part through a multi-cored ceramic heater block 6 containing electric heater elements. A thermocouple C is exposed to hot air leaving the block 6 and sends signals to means for adjusting the current supply to the heater elements to maintain the hot air leaving the block 6 at a constant temperature. Cold compressed air may by-pass the block 6 through either or both of valves 4, 5 to mix with the hot air immediately before the nozzle exit holes. The valves 4, 5 are operated by solenoids operated by microswitches A, B under the control of cams G on a shaft rotated by a motor to rotate the field coils and thereby adjust the main drive of machine and the rolls 34. The nozzle 7, the heater 6 and the by-passes B 1 , B 2  may be bodily movable to effect sealing or the nozzle 7 and the heater 6 only may be movable, e.g. on a parallelogram linkage operated by a pneumatic cylinder. In a modification, the valves 4, 5 may be of different size so that the valve 5 passes more air when open than the valve 4.
Patent GB-1343265-A (GB)
Title: Road and clevis assembly
IPC: F16B7/18
Filed: 1972-08-29
Abstract: 1343265 Making linkwork METEOR RESEARCH Ltd 29 Aug 1972 40062/72 Heading B3A [Also in Division F2] A rod and clevis assembly comprises a first clevis 6 having a tapered boss 16, with a screwthreaded bore therethrough to receive the threaded end portion 4 of a rod 2, a lock nut 22 with a skirt portion 24 complementary to the boss 16 which it frictionally embraces and a second clevis 8 also having a boss 16 and a bore 18 in which the rod 2 is rigidly fixed. The clevis blanks and bosses 16 are made by a die forming process in which the boss 16 is extruded from bight portion 10. As shown, the threads of the rod 2 are produced by rolling so that the thread outside diameter is greater than that of the plain rod portion. The rod may be fixed in the bore 18 of the second clevis 8 by welding at 20. Holes 26 are produced by punching metal from the legs 12 so that the holes extend through a bead 28.
Patent GB-1345236-A (GB)
Title: Forging press
IPC: B21J9/02
Filed: 1971-06-30
Abstract: 1345236 Forging DAVY & UNITED ENG CO Ltd 21 June 1972 [30 June 1971] 30582/71 Heading B3H A forging press comprises a base member 2 in which a frame 8 is mounted for sliding by an hydraulic ram 14 acting between the base member and the lower crosshead 9 of the frame and the central part of the opening 4 in the base member is closed off by a cover-plate 18 after insertion of the frame into the opening. Thus the frame can be made in one-piece by casting or assembled prior to insertion. The base member 2 is made up of plates 2A, 2B, 3 welded together and the cover-plate 18 is bolted to the top plate 2A. The cover-plate has guide blocks 20 for the frame columns 8A, 8B and futher guide blocks 2B are provided on small plates 26 bolted to the base member. The lower forging die is mounted on the upper side of cover plate 18 and the ram 14 mounted on the lower side. A pair of pistoncylinder units (30), Fig. 1 (not shown), serve to return the frame. Reference has been directed by the Comptroller to Specification 1,152,237.
Patent GB-1348480-A (GB)
Title: Electrolytic drilling of holes
IPC: B23H7/26
Filed: 1970-07-16
Abstract: 1348480 Electrolytic drilling DEFENCE SECRETARY OF STATE FOR 15 July 1971 [16 July 1970] 34585/70 Heading C7B A tool for electrolytically drilling holes e.g. 0.10 to 0.50 mm in a workpiece 16 comprises a self-supporting tube 21 of insulating material, e.g. glass, quartz or sapphire, along the uniform bore of which extends a conducting wire 20, e.g. of Pt containing 10% Rh, fixed axially relatively to the tube by a support e. g. clamp 28 so that a free end of the wire is within the tube and spaced axially (by distance 22) not less than 2 and preferably less than 20 times the tube's internal diameter, from the free open end of the tube, electrolyte e.g. 20% HNO 3  from tube 15 being supplied to the clearance between the wire connected as cathode and the bore. The tube's internal diameter and wire's diameter are preferably 2/3 and 1/5 respectively of the tube's external diameter e.g. 0.09 to 0.43 mm. A plurality of holes may be simultaneously drilled using a multiple tool Fig. 3 comprising a plurality of tubes each having a wire. The free end of the wire may be initially level with the tube's open end and electro-eroded by supplying current and electrolyte e. g. KCN to produce the required distance.
Patent GB-1348646-A (GB)
Title: Treatment of polymeric materials
IPC: B29C48/08
Filed: 1971-11-24
Abstract: 1348646 Removing static electricity during extrusion MONSANTO CHEMICALS Ltd 24 Nov 1971 [22 Dec 1970] 60750/70 Heading B5A [Also in Division C3] The electrostatic tendency of polymeric materials to attract dust is reduced by heating the material in an electric field to a temperature below its decomposition temperature, the electric field being insufficient to produce ohmic contact between the material and an electrode used to apply the field, as a result of ionization of air, or any other insulation breakdown but being sufficient to cause migration of charges within the material. The field may be D.C. or very low frequency A.C. In one embodiment, thermoplastic polymers are treated whilst they are being extrusion moulded into sheet form, the electrodes being built into the die of the extruder. Such an extrusion die is shown in Fig. 4 in cross-section. The extruder itself is not shown. The die comprises a two-part die head 42, 43, the two parts forming a manifold 43 which is supplied with an adjustable spreader bar 44. The die also comprises lips 45 and 46. Lip 46 is adjustable by means of bolts 53 according to the thickness of sheet required. Lip 45 is insulated from the rest of the die assembly by insulating pads 47 and 48, and forms one of the electrodes. The other electrode is tip 46 which is earthed via the extruder to which it is bolted. The polymer is thus subjected to the D.C. electric field as it exudes from the die. The lip 45 is coated with, e.g. polytetrafluoroethylene on its surface which contacts the thermoplastic material. A simpler embodiment, not illustrated, is disclosed, where neither of the lips is insulated, but both are earthed via the extruder, and a separate electrode is placed near the die (on two electrodes one above, and one below it) at the desired potential difference. In the examples: (2) and (5) polystyrene or ABS resin is extruded into sheet using the die of Fig. 4; (3) acrylonitrile/butadiene/styrene resin is extruded into sheet using a standard sheet extrusion die both lips of which are earthed, and which has a pair of electrodes placed near the lips, and on either side of the sheet being extruded; and (4), as in (3) but using brass rods of semicircular X-section, and having their edges rounded to reduce the chance of corona discharge. The electrodes are heated by coils. Heating of polymers by high frequency electric fields is excluded.
Patent GB-1349587-A (GB)
Title: Prosthetic knee joints
IPC: A61F2/38
Filed: 1971-11-18
Abstract: 1349587 Prosthetic knee joints R A ELSON 9 Nov 1972 [18 Nov 1971] 53598/71 Heading A5R A prosthetic knee joint comprises a tibial member 1 having a stem 2 for insertion into, and securing to, the tibia and a spindle extending transversely to the stem, and two bearing bushes 11, 12 for anchorage in the femoral condyle and pivotally supporting opposite ends of the spindle. The stem 2 may have an extension 3 the axis of which makes an obtuse angle with the axis of the stem 2. The spindle has a part 8 of enlarged external diameter which is a force fit in a bore 6 in the extension 3. The parts 9, 10 are a push fit in the bearing bushes 11, 12 which have circumferential and axially extending grooves so that they are firmly keyed in the cement bonding them to the femoral condyle. In a modification the stem has a plate at its upper end and the extension 3 projects upwardly from the plate. The tibial member may be made from stainless steel and the bushes from high density polyethylene.
Patent GB-1350981-A (GB)
Title: Surgical implants
IPC: A61B17/064
Filed: 1971-04-08
Abstract: 1350981 Fracture appliances R T AUSTIN 10 July 1972 [8 April 1971] 9148/71 Heading A5R A bone staple comprises a first part 1 having an elongated leg 3 and an annular head 4, and a second part 2 which is L-shaped and has an elongated pointed leg 5 and a portion 6 which is screw threaded at 7. The two parts are held together by a nut 9, a spring washer 8 and a lock nut 10. The legs 3 and 5 may be elliptical in cross-section, with the major axes of the ellipses parallel. The angle between the leg 5 and the portion 6 may be about 75‹. The head 4 may be a cylindrical collet.
Patent GB-1353597-A (GB)
Title: Method of and apparatus for assessing the shape of small objects
IPC: G01B11/24
Filed: 1970-10-13
Abstract: 1353597 Spacial filtering SIRA INSTITUTE 13 Oct 1971 [13 Oct 1970] 48577/70 Addition to 1242574 Heading G2J [Also in Division G1] In a modification of the apparatus and method disclosed in Specification 1242574 for ascertaining the uniformity of at least a portion of an object 20, the position of the focusing lens 22 is variable. It is found that with the scanned beam from a laser or xenon arc lamp 10 focused inwardly of the surface 21, e.g. a razor blade edge, under investigation, the spatial frequency at which the output signal becomes zero is less than if the beam were focused at the surface. Using this principle, there are a number of different modes of operation: (a) The scanned beam is first focused at the surface. The lens 22 is then moved until the output 27 from the photo-cell 24 becomes zero - i.e. position L in Fig. 5. The distance moved by the lens is indicative of the profile of the surface. (b) As the lens 22 is moved towards the surface, the photo-cell output 27 passes through a series of maxima and zero minima - Fig. 5. By constantly oscillating the lens along the optical axis, and measuring the time interval between the maximum M and the minimum L, a direct indication of the sharpness of the edge is obtained. Alternatively, the time interval between the minima L and N can be measured. (c) Instead of basing the measurement method on the amplitude of signal 27, the phase of this signal can be compared with a reference signal 28, produced by a photo-cell 26, using phase sensitive rectifiers. A large phase change corresponds to a minimum position. (d) The disc 11 having a single pattern of radial lines may be replaced by a disc having two grating tracks of different spacing or by two discs having differently spaced radial lines. The two images corresponding to the different spatial frequencies are produced at different points inwardly of the cutting edge 21. The detector 24 collects light reflected back at these two frequencies, and the two corresponding electrical signals are separated from one another. A standard object is first inspected and the two focal positions corresponding to the two frequencies are adjusted so that a zero signal is obtained at both frequencies. Further objects can then be tested. (e) Using two scanning frequencies, the lens is oscillated and a standard edge is arranged to produce zero signals simultaneously at the two different frequencies. With a test edge in position, the time interval between zero signals at the different frequencies is indicative of the profile of the test edge. The method may be applied to inspecting the edge of a continuously moving strip.
Patent GB-1354913-A (GB)
Title: Air filter arrangement for a vehicle air conditioning system
IPC: B60H1/00
Filed: 1971-04-19
Abstract: 1354913 Air conditioning vehicles CATERPILLAR TRACTOR CO 19 April 1971 [9 Feb 1970] 50099/72 Divided out of 1354912 Heading F4V [Also in Divisions B1 and E2] In a vehicle air conditioning system as described in Specification 1,354,912, an air filter assembly comprises a support bracket secured to the roof of the vehicle below openings therein and having a peripheral wall 39 and a flange 38, a filter element 41, a filter holder 40 engaging the wall 39 and holding the filter element 41 against the flange 38, and a dust pan 42 having secured thereto spring clips 43 having pins 44 which releasably engage aligned apertures in the holder 40 and wall 39. The holder 40 and dust pan 42 may be formed as a unit.
Patent ID-29579-A (ID)
Inventor: VINAYAGAMOORTHY THURAIAYAH
IPC: C12Q1/6869
Filed: 1999-10-01
Abstract: The invention provides a method of sequencing a nucleic acid in a reaction mixture comprising first and second nucleic acid target sequences. The target sequences may be present on the same or different nucleic acid molecules. First and second labelled sequencing primers are provided that are hybridizable, respectively, to the first and second nucleic acid target sequences. The second sequencing primer being at least as long as the total length of the first sequencing primer plus the length of the first target sequence. Each of the sequencing primer extension products beginning with the second sequencing primer will be longer than the primer extension products in the pool beginning with the first sequencing primer. Once the sequencing reactions have been completed, the lengths of the primer extension products in the pool may be detected by known methods, such as by gel electrophoresis.
Patent IL-104897-A (IL)
Title: Pressure relief valve
IPC: B60C29/02
Filed: 1993-03-01
Abstract: A valve 59,61 is provided which selectively reduces pressure of tires 20,22 on a vehicle for reducing the overall height of the vehicle. The valve may be employed in vehicles having or not having CTI systems. <IMAGE>
Patent IL-117795-A (IL)
Title: 6, 7-dihydro-3-(2-nitrophenyl) 1, 2-benzisoxazole-4(5h)-ones and pharmaceutically acceptable addition salts thereof
IPC: C07D261/20
Filed: 1992-02-11
Abstract: The present invention relates to 9-amino-1,2,3,4-tetrahydroacridines and related compounds of formula 1 <CHEM> wherein Y ix C=0 or CHOH; R<1> is hydrogen or loweralkyl; R<2> is hydrogen, loweralkyl, or phenylloweralkyl; R<3> is hydrogen, OR<4> wherein R<4> is hydrogen or COR<5> wherein R<5> is loweralkyl, X is hydrogen, loweralkyl, halogen, loweralkoxy, hydroxy, or trifluoromethyl, the geometric or optical isomers thereof, N-oxides, thereof, or the pharmaceutically acceptable acid addition salts thereof, which are useful in relieving memory dysfunction and are thus indicated in the treatment of Alzheimer's disease. The invention relates further to a process for the preparation of the above compounds.
Patent IL-124175-A (IL)
Title: Push-pull power amplifier
IPC: H01L23/66
Filed: 1996-10-25
Abstract: A push-pull power amplifier (32) for amplifying an input radio frequency signal, comprising: an input terminal (33) for receiving an input radio-frequency signal; an output for outputtting an amplified radio-frequency signal; an integrated circuit chip (38) having a first pair of active devices (39, 40), the chip having a control terminal (20) and at least one current-carrying terminal (22, 24) associated with each active device, the currents flowing through the current- carrying terminals depending upon the signals applied to the control terminals; a substrate having a plurality of terminals, the chip being mounted with each chip terminal flip mounted onto a corresponding substrate terminal; an input electromagnetic coupling means (35, 36) formed on the substrate and having an input primary conductor electrically coupled between the input terminal and the substrate terminal corresponding to the control terminal of a first one of the pair of active devices, and an input secondary conductor electromagnetically coupled to the input primary conductor and electrically coupled between an input reference potential and the substrate terminal corresponding to the control terminal of a second one of the pair of active devices; and an ouptut electromagnetic coupling means (44, 46) also formed on the substrate and having a primary conductor electrically coupled between the substrate terminal corresponding to one of the current- carrying terminals of the first active device and the output terminal, and an output secondary conductor mutually electromagnetically coupled to the output primary conductor and electrically coupled between the substrate terminal corresponding to one of the current- carrying terminals of the second active device and an output reference potential; the signal on the output terminal being a combination of the signals being conducted by the pair of active devices.