baber/WOPTO huggingface dataset:
Patent GB-1365969-A (GB)
Title: Protective enclosure for cable
IPC: H02G15/113
Filed: 1971-11-23
Abstract: 1365969 Junction boxes WESTERN ELECTRIC CO Inc 23 Nov 1971 [23 Nov 1970] 54248/71 Heading H2E A protective enclosure for cable comprises two or more members 2, 3 which form a sealed shell enclosing plates at either end constructed to receive cables, the inside surface of the shell and the rim of each endplate forming an arrangement to hold sealing material 106 to provide a hermetically sealed closure. The end plates may be adapted to receive two cables or as shown in Fig. 3, one. Each plate consists of members, e.g. 22 which bolt together at flanges 31a, 31b to form a cable receiving aperture. The interior surface of this aperture is provided with ridges (38), and grooves (39, 40) are provided in flange wall (30b) as in Fig. 6 (not shown). A similar arrangement is provided on member (23). Sealing compound is placed on these surfaces to seal against the cable, trapped air being bled out through the grooves. A cable clamp 45, Fig. 3, also made in halves bolts via the bar 42 to the end plate. The tie bars extend the length of the closure and prevent axial movement of the end plates. The plates are inserted into the shell before the latter is bolted up, sealing material 106 being introduced as in Fig. 3. Then as shown in Fig. 2, the shell is bolted together at flanges 4a, 4b. Square metal inserts 11 (threaded) and 10 (unthreaded) of, e.g. sintered stainless steel are placed in square holes. Lips 13, 14 co-operate with bosses to hold the inserts in place. Channels 16 in both shell members are filled with a sealing material. By making the inserts shorter than the holes in which they are placed an amount of spring tension is imparted to the shell when bolted up. The shell members may be made of non-metallic material, and a metal film 17 may be deposited over the inner surface.
Patent GB-1373934-A (GB)
Title: Measuring high transients and high alternating voltages
IPC: G01R15/06
Filed: 1971-11-24
Abstract: 1373934 High voltage potential dividers EMIL HAEFELY & CIE AG 24 Nov 1971 [25 Nov 1970] 54530/71 Heading G1U A potential divider for use in measuring the alternating and transient voltages occurring when high voltage equipment is tested comprises a high voltage section (A to B) formed by a chain of resistors and capacitors and a low voltage section (B to earth), across which measuring apparatus is connected, formed by a single capacitor C 2 . By making the total divider resistance R = k#L/C, where k lies between 0À25 and 1À5, L is the overall circuit inductance and C the overall capacitance of the high voltage section, it is said that impedance matching becomes possible, thereby preventing reflections in both the line Z connecting the divider to the test apparatus and within the divider itself. The divider is adapted for use on different voltage ranges merely by removing some of the components in the high voltage section.
Patent GB-1276515-A (GB)
Title: Improvements in or relating to electronic equipment
IPC: H04B7/08
Filed: 1969-11-07
Abstract: 1276515 Diversity reception systems CIT COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS 7 Nov 1969 [7 Nov 1968] 54756/69 Heading H4L An arrangement for improving signal-tonoise ratio in a diversity reception system derives correlation coefficients from the signals received on two aerials, both directly and in quadrature, and after obtaining sum and difference signals from these combine the latter with the original signals in a manner to effect reduction of noise. As shown the signals from aerials 1 pass through compensating delays 3, frequency filters 5 tuned to the signal frequency and choppers 85, 115 to a coincidence correlator 114 producing an output voltage of +1 when the two inputs have the same polarity and - 1 when they differ. This is passed through a low-pass filter 116 to a correction circuit 117 providing at its output the correlation coefficient of the input signals and this is subtracted from unity at 118 to give a signal U. Unit 11 phase-shifts one input by 90 degrees at the known means signal frequency for a similar correlation measurement V of the signals in quadrature. The signals U, V are used to modulate the output from oscillator 44 (a delay of 90 degrees is provided by unit 45) to produce signals X, Y which are of amplitudes equal to U, V and which are added and subtracted at 48, 74 respectively to give signals # 1 , # 2 . These latter are applied to chopper circuits 122, 123 and correlated with the outputs of 85, 115 at 201, 202. The sum of the outputs of 201, 202 is obtained at 9 and after frequency-filtering at 75 provides the output signal which is stated to possess an improved S/N ratio.
Patent GB-1076798-A (GB)
Title: Closed loop servo system for electro-optical sensing apparatus
IPC: B23Q15/00
Filed: 1964-07-08
Abstract: 1,076,798. Transistor pulse circuits. SPARTANICS Ltd. July 8, 1964 [Sept. 24, 1963], No. 54858/66. Divided out of 1,076,797. Heading H3T. [Also in Division G1] The gain of a closed loop servo system is maintained substantially constant despite variations in transducer gain by using a saturated characteristic servo amplifier. In apparatus for positioning a mark by scanning it photoelectrically as claimed in parent Specification 1,076,797, the signal of transducer 24 is fed through emitter followers 108, 116 to the threestage direct coupled amplifier 122, 130, 134. Saturation occurs in transistor 134 and, for large transducer signals, in transistor 130. The circuit 66 acts as a low-Q filter tuned to fundamental frequency of the transducer signal and as a phase-splitter for feeding the class B pushpull cascaded emitter follower power amplifier 68. The currents in all the transistors of this amplifier are aggregated to drive the servomotor 70. In order to determine when positioning of the mark is complete, the servo control signal is fed to a synchronous demodulator 166 energized in synchronism with the frequency of scanning. If the demodulator output is above a + level set by the potentiometer 180, transistor 182 conducts to hold the clamping transistor 188 off. Similarly, if the demodulator signal is below a - level set by potentiometer 196, transistor 188 is held off. When the demodulator signal is between the preset limits 188 conducts, and after a delay provided by circuit 98 to guard against hunting, initiates a control. In order to prevent false initiation of the control signal if the demodulator output is small because servo control signal has been lost for some reason, this signal is fed to a full-wave rectifier 206, 208, and unless the output therefrom exceeds a level set by potentiometer 220, transistor 94 conducts to prevent the clamping transistor 188 being released.
Patent GB-1361260-A (GB)
Title: Gas firing
IPC: F23D14/00
Filed: 1971-11-25
Abstract: 1361260 Gas fired steam generator furnaces; gas burners BABCOCK & WILCOX Ltd 25 Nov 1971 [25 Nov 1970] 54894/71 Headings F4B F4T and F4A A tube walled steam generator furnace has gas discharge burner nozzles disposed in the bottom wall to discharge gas upwardly. A steam generator bottom wall is formed with an annular gap 4 between an outer section 3 and an inner section 6, burner nozzles 5 are arranged in groups within the gap 4, and an annular wind box 8 surrounds a gas supply trunk 7 feeding the nozzles 5. The gas trunk 7 and wind box 8 are divided, Fig. 2, to provide individually controllable supplies to each group of burner nozzles 5, so that the turn down range of the steam generator may be increased by cutting out one or more groups of burner nozzles.
Patent GB-1348173-A (GB)
Title: Stop mechanism for stopping an associated roll after a predetermined number of revolutions particularly for use in a towel dispenser
Inventor: BAHNSEN E B
IPC: A47K10/28
Filed: 1971-11-29
Abstract: 1348173 Rolled towel dispensers STEINER CO LAUSANNE S A 29 Nov 1971 [17 Dec 1970] 55197/71 Heading A4G A towel dispenser comprises a trough 150, Fig. 2 pivoted at 152 and provided with a rear edge 156 co-operating with a casing edge 199 for smoothing out soiled towelling in return loop 107 to take-up roll 175, towel being pulled from roll 105 in the trough 150 over the friction surface of measuring roll 160 and under and over pinch roll 165 end-supported in slot 146, and down into dispensed loop 103, the take-up roll being driven from the measuring roll via chain or sprocket and the friction surface of a roll 170. Connected to the end of and rotating with the measuring roll is a stop member 225, Fig. 8 and a spiral ridge cam 210 having a radial slot 215 cutting across the ridges 213. An arm 233 pivoted to the casing side wall at 232 carries a cam follower 235 entering between the ridges and a lower stop dog 236. Normally the dog rests on a vertically adjustable abutment 245 adjacent the bottom of vertical slot 215. On pulling towelling, the cam rotates clockwise and the follower moves relatively round the cam and raises the arm and stop dog until the leading edge of stop member 225 abuts the trailing edge of dog 236 with the follower 235 held at the top of slot 215 due to pull on the towelling. On releasing the pull, the follower drops to the bottom of the slot and is ready to allow a further predetermined length of towelling to be pulled out. The length is predetermined by the height of abutment 245 which determines which initial cam ridge is engaged by the follower and therefore the number of revolutions of the cam and measuring roll before the stop and dog engage. The casing front 121, Fig. 12 hinges upwardly at 128 after lifting latches 145 and is held open for reloading by a stay 130 freely pivoting at 131 on the front. On raising the cover, the rear stay edge slides on casing side pin 116 which is caught by hook 136 so that a stay groove 135 slides over the pin which then enters hook 137 to hold the stay and cover in open position. On further lifting the cover, hook 137 is disengaged and a stay bent portion above line 133 moves over the pin to free the stay on closing the cover, and cover cam 124 pivots the trough 150 from a forward loading position to engage edges 156, 199 with return towelling 107.
Patent GB-1062540-A (GB)
Title: Electrical control system
Inventor: REES VERNON CHESTER
IPC: G05D23/22
Filed: 1965-12-30
Abstract: 1,062,540. Automatic temperature control. OWENS-CORNING FIBERGLAS CORPORATION. Dec.30, 1965, No. 55230/65. Heading G3R. A system for controlling the temperature of glass fibres during manufacture is provided with means whereby a gradual increase in the temperature of the glass melting device after a shut down or power failure is ensured. The temperature of molten glass in a bushing 10 is sensed by a thermocouple 42, the signal from which is compared with a desired temperature signal set in a control instrument 46, the error signal being used to control the electric heating element of the bushing 10 by way of a saturable reactor or silicon controlled rectifier device 16 and transformer 14. To prevent a surge of current in the heating element of the bushing 10 after cooling thereof has occurred a resistive device 50 is provided. A relay 62 closes contacts 64 when de-energized by a power failure whereupon resistor 50 is energized from a battery 60 such that the temperature of the device heats up at a rate similar to the cooling rate of the bushing 10. A thermocouple 44 provides a signal which increases at a rate similar to that at which the signal from thermocouple 42 decreases, the signals from the thermocouples 42, 44 being added and applied to the instrument 46. Thus upon the restoration of power resistor 50 is de-energized and, due to the 'false' indication of the two thermocouples, power is restored to the heating element of the bushing 10 in a gradual manner as the signal from the thermocouple 42 becomes predominant over the signal from the thermocouple 44.
Patent GB-1365483-A (GB)
Title: Method of joining parts wherein one of the parts is formed of a porous hydrophobic non stick synthetic resin material
IPC: H01M50/55
Filed: 1970-11-21
Abstract: 1365483 Metal-air cells JOSEPH LUCAS (INDUSTRIES) Ltd 15 Nov 1971 [21 Nov 1970] 55520/70 Heading H1B [Also in Division B5] A part 11 of a porous hydrophobic non-stick synthetic resin material is joined to a part 12 of a weldable material by engaging the parts 11, 12 and causing at least a portion of the part 12 to melt and flow into the pores of the part 11 so that on cooling a joint is formed. In one embodiment, Fig. 1, a porous polytetrafluoroethylene sheet 11 is ultrasonically bonded to a polystyrene frame 12 with a metallic grid 13 trapped therebetween, a lug 14 on the frame 12 forming the molten material for welding. The frame 12 defines the half cell frame of an air electrode of a primary metal-air battery and, after joining, the active material of the air electrode is applied to the grid 13 and a porous insulating separator (not shown) is mounted in the aperture 15 of the frame 12 to trap the active material on the grid 13 which acts as a current collector in the finished battery. In a modification (not shown), the active material is applied to the grid 13 before joining, the joining also serving to trap the insulating separator against the active material and between the frame 12 and the sheet 11. In a further modification (not shown) the half cell frame is replaced by a complete cell frame open along one edge for the insertion of an anode. The two electrodes which define with the anode a single cell are attached in one operation using either two separate P.T.F.E. sheets or a single P.T.F.E. sheet folded over one joined edge of the frame, the sheet(s) having the grids attached and being coated with the active material. In another embodiment, Fig. 3, a cell of a primary metal-air battery is produced by applying a layer of active material 17 to a porous P.T.F.E. strip 18 and then covering the material 17 with a porous polyamide strip 19. The metal anode 16 is placed on the strip 19 and the strip 18 is folded about its centre line. Electrical connections are made to the anode 16 and the material 17 by leads 21, 22, respectively. A removable pin 24 is placed on the strip 19. The assembly is ultrasonically sealed along lines (23), Fig. 4 (not shown), so that a portion of the strip 19 melts and flows into the pores of the strip 18. The pin 24 is removed and leaves an aperture for the introduction of an electrolyte.
Patent GB-1174056-A (GB)
Title: Improvements in or relating to Delivery Mechanism for Supplying Spreading or Distributing Implements
IPC: A01C15/00
Filed: 1966-12-13
Abstract: 1,174,056. Agricultural implements. C. VAN DER LELY N.V. 13 Dec., 1966 [24 Dec., 1965], No. 55888/66. Heading AID. A delivery mechanism arranged to supply material from a supply trough 7 to a centrifugal distributer 14 comprises a mechanism arranged to sense the weight of the container 13 of the distributer and its contents and a control mechanism coupled with the sensing mechanism in such a way that it will place a delivery mechanism 19 in operation when the contents of the container 13 falls below a predetermined value. As shown the distributer is supported on levers 10 which are mounted on a shaft 9 which co-operates with a spring 56 which reacts against the weight of material in the container 13 to cause a lever 22 connected to a linkage 23 to move in an anti-clockwise direction so that a roller 31 contacts a cam 32 which causes material to be fed from the delivery mechanism 19 to the container 13. The increasing weight in the container 13 causes the levers 10 to move in a clockwise direction until the pin of the spring 56 is balanced and the roller 31 moves out of contact with the arm and the flow of material to the container 13 ceases. An electrically operated sensing mechanism may be provided in the container 13 and may be arranged to switch on the drive of the delivery mechanism when the material in the container 13 falls below a predetermined level.
Patent GB-1360879-A (GB)
Title: Pressure reducing regulator
IPC: G05D16/06
Filed: 1971-12-02
Abstract: 1360879 Valves SINGER CO 2 Dec 1971 [9 Dec 1970] 55911/71 Heading F2V A pressure regulator comprises two body portions 11, 12 having an inlet tube 18 and outlet tube 21 respectively, and a diaphragm 16 having its outer periphery clamped between the portions 11, 12 and its inner periphery clamped between the tube 18 and a stationary valve member 22 and having a part 34 which slides on the outlet tube 21 in response to outlet pressure communicated to a chamber 43 via holes 44. The part 34 forms a moving seat with fluid flowing initially through apertures 28 in the valve member 22, past the valve seat and being guided by flow straightening fins 32 on to a mesh screen 39 which allows pressure to build up in the vicinity of holes 44 with increasing velocity of fluid flow.
Patent GB-1455689-A (GB)
Title: Method of separating gaseous isotopes
IPC: B01D59/18
Filed: 1973-12-03
Abstract: 1455689 Centrifugal separation of isotopes F HEJLEK 3 Dec 1973 [6 Dec 1972] 55952/73 Heading B2P In a method of continuously separating gaseous isotopes of heavy elements, e.g. uranium hexafluoride, a gaseous isotope mixture to the separated is introdoced under pressure into one end of a smooth inner surfaced tube 13, Fig. 1, through one or more peripheral inlet nozzles 14, Fig. 2, which discharge the gaseous mixture tangentially to the inner surface of the tube, and which are located in a plane substantially perpendicular to the tube axis, so that a rotating pattern of flow is obtained along the tube; the tube is rotated in the same direction as the rotating pattern of flow so that by centrifugal action a portion of the gaseous mixture becomes enriched with the heavier isotopes and another porition with the lighter isotopes; the heavier isotope-enriched portion of the mixture is discharged at at least one discharge orifice 19 in one part of the tube and the lighter isotope-enriched portion 15 is discharged at at least one discharge orifice 15 in another part of the tube. In operation the surface 18 is heated whilst the surface 17 is cooled. The heat extracted in the cooling may be used for heating the surface 18. The annular discharge orifice 19 for the heavy isotope-enriched gas is defined between a plate 20 and the inner wall of the tube. Tn a modification, Figs. 5 and 6 (not shown), two orifices (9) extending tangentially to the tube inner surface are formed in the tube wall. In another modification, Fig. 4, the tube 1 has an enlarged diameter portion having a frusto-conical inner surface which together with an axially adjustable disc 7 defines an annular orifice 8. Two other types of adjustable orifices are shown in Figs. 7 and 8.
Patent GB-1141182-A (GB)
Title: Clamping device, especially a mandrel
IPC: B23B31/30
Filed: 1966-12-15
Abstract: 1,141,182. Pipe couplings; securing workparts or mandrels. ANCIENS ETABS T.M.B.- J. TOBLER S.A. 15 Dec., 1966 [5 Jan., 1966; 22 April, 1966; 16 May, 1966, 10 Oct., 1966], No. 56258/66. Headings F2G and F2U. [Also in Division B3] A pressure fluid-operated work-clamping device comprises a hollow steel, rubber &c. diaphragm 21 of trapezoidal cross-section, the large base of which contacts the work 30. The fluid may be a gas or a liquefied gas, mercury, or a liquid metal at high temperature, or paraffined cellulose or methyl. The cross-section may include a right-angle. The device may be used for braking a shaft, for coupling shafts or pipes, or for anti-theft devices for a steering column which may be combined with a parking brake. In the chuck of Fig. 4, liquid coolant is supplied through a conduit 18 and evacuated through passages 26 through which any swarf which enters a chamber 19 may also be evacuated. The clamping pressure is produced by a push-rod 10, 11. Since the side 23, 24 can slide relatively to its mounting surface, the side 25 pivots about the apex 28 to increase the clamping pressure. In a modification, the side 23-  24<SP>1</SP> is free to slide instead of being retained by a collar 8. The mandrel of Fig. 5 is mounted between centres, which are moved axially to cause a piston 100 to produce the clamping pressure. A spring 171 assists in restoring the parts when unclamped. Alternatively, a threaded piston may be rotated in the mandrel body to produce the pressure. In a further modification, the side 23<SP>1</SP>, 24<SP>1</SP> is not restrained by a projection 26 and its supporting ring.
Patent GB-1166500-A (GB)
Title: Process and Apparatus for Coating a Moving Support
IPC: B05C5/00
Filed: 1966-12-21
Abstract: 1,166,500. Coating moving flexible webs. FUJI SHASHIN FILM K.K. 21 Dec., 1966 [23 Dec, 1965], No. 57264/66. Heading D1L. The supporting means 6 for a flexible web 5 in the region of a coating device 1 is connected to an electric source 7 and the coating liquid 2 is earthed to provide an electric potential difference between the liquid and the supporting means which are also electrically insulated from one another. The provision of such an electric potential difference improves the stability of the bridge 4 of coating liquid in the cases of the travelling speed of the web being increased, the clearance d increased or the rate of supply of the coating liquid reduced. The coating device may be a slide type hopper (as shown) or an extrusion type hopper. The coating liquid may be as a photographic emulsion. The liquid may be insulated from the supporting means by coating the undersurface of the web (e.g. paper) with an insulating film or resin.
Patent GB-1410209-A (GB)
Title: Pedal-operated brake control arrangement
IPC: B60T15/04
Filed: 1972-12-14
Abstract: 1410209 Hydraulic braking systems ALFRED TEVES GmbH 14 Dec 1972 [24 Dec 1971] 57757/72 Heading F2F A pedal-operated brake control arrangement 25 provides communication between accumulators 39, 39<SP>1</SP> and first and second brake circuits 26, 27 respectively and allows pressurization of one brake circuit if the pressure in the other is lost. Leftward movement of a brake pedal 18 is transmitted by a piston 19 to a control piston 11, a cam surface 30 of which causes opening of a ball valve 28 through a tappet 20, pressure liquid from accumulator 39 then passing to a recess 33. Continued movement of piston 11 results in a guiding edge 12 thereof passing beyond the end of a sleeve 31 so that pressure liquid is fed to circuit 26. Pressure liquid acts on a further control piston 11<SP>1</SP> to move it leftwardly thereby opening valve 28<SP>1</SP> to pressurize circuit 27. During initial movement of pedal 18 compression of a spring 21 simulates a longer travel of the control piston to the driver than is actually the case. If the pedal is pressed down even further a spring 22 touches a spring retainer 24 so that the pedal cannot be pressed down completely. The overall effect is to transmit to the driver the feel of a conventional master cylinder. If circuit 26 fails, a step 15 strikes a stop 16 and since there is no pressure in this circuit the normal reaction on control piston 11 is suppressed. A spring 17 is compressed and control piston 11<SP>1</SP> mechanically moved to open valve 28<SP>1</SP>. If the second brake circuit 27 fails instead, piston 11<SP>1</SP> is again mechanically moved and a spring 17<SP>1</SP> is compressed thereby allowing movement of piston 11 to open valve 28. On brake release bores 34, 34<SP>1</SP> in pistons 11, 11<SP>1</SP> are respectively aligned with radial bores 14, 14<SP>1</SP> in sleeves 31, 31<SP>1</SP> which communicate with common reservoir 35 supplying pressure liquid by means of a pump 38 to the accumulators.