baber/WOPTO huggingface dataset:
Patent GB-869778-A (GB)
Title: Electrical insulation material
IPC: H01B3/50
Filed: 1959-12-07
Abstract: 869,778. Coated fabrics. GENERAL ELECTRIC CO. Dec. 7, 1959 [Jan. 2, 1959], No. 41511/59. Addition to 830,644. Class 140. [Also in Group XXXVI] An insulation material comprises a woven cloth wherein the warp is made up of polyethylene terephthalate yarn and the filling of glass yarn, the cloth being heat-set under tension and coated with a cured or semi-cured e.g. heat-cured, elastomer. The elastomer may be a silicone rubber; natural or synthetic rubber e.g. polymers or copolymers of butadiene such as with styrene or acrylonitrile; polyisobutylene; isobutylene-diolefin copolymers e.g. isobutylene-isoprene copolymer (butyl rubber); or polychloroprene (neoprene). Specification 594,481 also is referred to.
Patent GB-900027-A (GB)
Title: Improvements in or relating to a pulsed radar system
IPC: G01S13/58
Filed: 1959-12-07
Abstract: 900,027. Pulse Doppler radar; duplex radio signalling. LABORATORY FOR ELECTRONICS Inc. Dec. 7, 1959 [Dec. 5, 1958], No. 41522/59. Classes 40 (5) and 40 (7) Relates to a modification of the airborne 50% duty cycle pulse Doppler radar system disclosed in Specification 875,370, in which the transmitter oscillations 15, Fig. 1, and the local oscillations 16 are derived from a coherent signal source 18 and are gated on alternately for equal periods by means of gating signals derived in a generator 17 from the signal source 18, the recurrence frequency of the gating signals being controlled by an altimeter 21 so that the transmitter is turned off during the reception period of each ground echo signal. According to the present invention, in normal operation the transmitter and local oscillator gate pulses are separated in time by a small fraction of the recurrence period, the duty cycle of the transmitter and receiver each being then less than 50%, to ensure that transients due to switching off the transmitter are negligible when the receiver is turned on and that the receiver is fully disabled before the transmitter is switched on; when operating at low altitudes the leading edge of the local oscillation gate pulse as shown in dotted lines in Fig. 3 is arranged to overlap the trailing edge of the transmitter gate pulse, thereby increasing the duration of reception of the echo pulse. The gate generator 17 is shown in Fig. 4. A 500 kc/s. output from the source 18, Fig. 1, is applied to a chain of frequency dividers 24-29 whose outputs are selectively applied to a pulse shaper 31 by means of diode gates 32 selectively opened by a switch 19 controlled by the altimeter 21. The output from the shaper 31 is applied to another frequency divider 33 producing two output pulse trains 34, 36, Figs. 2 and 4, each of recurrence period T and relatively displaced by T/2. The amplified pulse train 34 is applied to a delay means 43 producing (1) an output D with a fixed delay d2=8 Ásecs. and (2) an output B with an adjustable delay d1 = 0-7 Ásecs., which are applied respectively to set and reset bistable flip-flops 49 and 47 producing the transmitter and receiver gating pulses respectively. The amplified pulse train 36 is applied directly to reset the flip-flop 49 and through a delay means 44 producing an output C with a fixed delay d3=3 Ásecs. to set the flip-flop 47. When the switch 19 is in its top position corresponding to low-altitude operation, it opens a diode gate 52 which applies the amplified pulse train 34 directly to set the flip-flop 49.
Patent GB-1105967-A (GB)
Title: Improvements in motor vehicles with front luggage compartments
IPC: B62D25/08
Filed: 1964-10-12
Abstract: 1,105,967. Vehicle bodies; fuel tanks. DAIMLER-BENZ A.G. 12 Oct., 1964 [12 Oct., 1963], No. 41577/64. Headings B7B and B7H. A vehicle body has longitudinals 15 braced by a front transverse member 16 and a member 17 which is shaped to fit around the spare wheel compartment disposed below the floor 19 of the luggage compartment 11. The space between the pedal board 54 and the luggage and spare wheel compartments is utilized to house the fuel tank 40 and the steering box 41.
Patent GB-1124353-A (GB)
Title: Hook assembly for well drilling rig
Inventor: MARKS WILLIAM MILES
IPC: E21B19/04
Filed: 1965-09-30
Abstract: 1,124,353. Boring earth etc.; hooks. DRESSER INDUSTRIES Inc. 30 Sept., 1965 [7 Oct., 1964], No. 41588/65. Headings E1F and E2A. A hook 21 is attached to a travelling block 10 by an adapter 20, the hook being pivoted to the adapter, and having a first position (Fig. 1) in which a drill pipe stand 56 is supported by elevator links 49, 50 and a second position (Fig. 2, not shown) in which the bail (57) of the swivel carrying the drill pipe string is supported. The hook has a latch 59 for retaining the bail, and opposite the latch a slot 55 which in the first position is in alignment with slots 15, 23 in the block and adapter to permit the hook, adapter and block to slide over a pipe stand when it is made-up in, or broken from, the string. The adapter is rotatably supported on the block by a flange 25 engaging rollers 26, and the hook is pivoted on pins 40 on spring urged members 30, (31) carried by the adapter.
Patent GB-995164-A (GB)
Title: Method and apparatus for packing christmas tree balls or similar delicate objects
IPC: B65B23/00
Filed: 1962-11-02
Abstract: 995,164. Packaging delicate objects. M. SCHMIDT. Nov. 2, 1962 [Nov. 8, 1961], No. 41596/62. Heading B8C. Delicate objects such as Christmas tree balls are packaged in a plastics bag containing air at superatmospheric pressure to protect them. The bags may be formed from a tube 3 which passes through rollers 4, to flatten it and then to a cutter 5 and a welder 6. Each bag is delivered by a suction picker arm 9 to a suction cup 12 on an intermittently moving chain 13 and is engaged by another suction cup 12 on another chain 15 so that it is held open while the objects 16 to be packaged therein are delivered from a series of hoppers 17, one from each hopper. Each filled bag is then received by grippers 26 on a carriage 25 and in one embodiment the bag is closed by inserting the open end thereof between two welding rods which form a seam 29 near to the open end and are then drawn down the bag so as to compress the air therein. When the rods reach the objects they make another seal 30. Alternatively the bag may be raised in relation to the rods. In another form, the welding rods are replaced by rollers with ridges, the rollers progressing towards the bag base and the ridges forming two seams as before. A continuous weld can also be formed by smooth surface rollers.
Patent GB-1475507-A (GB)
Title: Power amplifier
IPC: H03F1/30
Filed: 1974-09-24
Abstract: 1475507 Amplifier THOMSON-CSF 24 Sept 1974 [25 Sept 1973] 41602/74 Heading H3T A power amplifier comprising at least one transistor, in common emitter for bias, has its emitter current stabilized against temperature variations by a three transistor bias arrangement in which the emitter of an auxiliary transistor (Q 2 ) is coupled to the base of the amplifier transistor Q 3 , a resistor R 3  is connected between the same emitter and the base of a regulating transistor Q 4  and the same emitter is coupled to the emitter of a further transistor Q 1 , which has its base and collector coupled and a variable resistor R 4  is inserted between its base and the base of the regulating transistor Q 4  whose emitter volts are adjustable and whose collector is coupled to the base of the auxiliary transistor Q 2  the regulating transistor Q 4  and the further transistor Q 1  having the same characteristics and the amplifier transistor Q 3 , regulating transistor Q 4  and further transistor Q 1  being on the same heat sink Rd. The regulating and further transistors Q 1 , Q 4  may be on the same substrate. The auxiliary transistor Q 2  may be on the same heat sink as the other three. The transistors Q 1 , Q 4  and Q 2  form a closed loop and Q 2  may be multiple transistors to increase the current gain and to give a lower source impedance for the bias. The current level in the amplifier Q 3  is set by resistor R 6  which applies a variable reference to the emitter of Q 4 . At a given temperature the voltage at the emitters of Q 1 , Q 2  will be identical for the V BE  of Q 4  equals the voltage drop across R 3  A temperature change which will alter the current in Q 3  will also alter the V BE  of Q 1  and Q 4  equally. The change in that of Q 1  is arranged to partially offset that of Q 4  by means of the variable potential divider of R 4 , R 3 . Suitable adjustment of R 4  will restore the current in Q 3  to its former value, and at this setting the current in Q 3  is independent of temperature. The bias voltage is said to be relatively independent of the supply voltage V 0 . As shown the amplifier may be used with D.C. passing filter networks F, L for use as an RF amplifier and may consist of several transistors Q 3  connected in parallel and mounted on the same heat sink. Capacitors C 1 , C 2  stop oscillation.
Patent GB-1217260-A (GB)
Title: Warp left-off motions
Inventor: DECRAMER ROGER
IPC: D03D49/20
Filed: 1968-09-03
Abstract: 1,217,260. Let-off and take-up motions. R. DECRAMER. 3 Sept., 1968 [4 Sept., 1967], No. 41818/68. Heading D1E. A loom has a sand roller whose rotation controls a ratchet-operated let-off motion. The Jet off motion comprises a sley driven link 2 which operates a pawl lever 5 to rotate a worm 6 letting off the warp from the beam 1. The warp drives a rotatable back rest 10 having a chain 11 driving a sprocket 21 fixed to a shaft 19 of a control mechanism. The sand roller 34 drives a chain 18 driving a sprocket on a member 23 which is freely rotatable and axially movable on the shaft 19 of the control mechanism which has a pin 26 acting in a slot 28 of the member 23. The sprockets 21 and on the member 23 are interchangeable to provide various ratios of let-off and take-up. When the speed of take-up varies the sprocket 23 rotates at a speed to the sprocket 19 and the effect of the pin 26 in the slot 28 is to cause axial movement of the member 23 on the shaft 19. Such axial movement pivots a lever 29 which moves the sley operated link 2 to alter effect on the pawl lever 5 and thus vary the let-off in proportion to the take-up.
Patent GB-935404-A (GB)
Title: Improvements in or relating to methods and means for controlling the braking arrangements of lifts
IPC: B66B1/32
Filed: 1961-11-23
Abstract: 935,404. Controlling brakes. INVENTIO A.G. Nov. 23, 1961 [Dec. 16, 1960], No. 41917/61. Class 103 (1). [Also in Groups XXXV and XXXVII] In a braking system for a lift, at the commencement of braking a drive motor 1 is disconnected from a supply RST by reversing contactors 5, 6 and a servomotor 2 is energized through contactors 24, 25 and a limit switch 22. The servomotor through an apparatus 21.5 actuates brake levers 21.3 mounted at pivots 21.2 to position brake shoes 21.4 with respect to a brake drum 21.1. The contactor 24 is changed-over to cause the servomotor to increase the brake effort and the contactor 25 is controlled by an acceleration-responsive device which opens when the retardation reaches a predetermined value. The maximum brake shoe travel is limited by a switch 22 and during driving the brake is released by the servomotor being energized through changeover switch 24 until the limit switch 23 is opened.
Patent GB-1523135-A (GB)
Title: Exposure control systems
IPC: G03B7/091
Filed: 1975-10-14
Abstract: 1523135 Shutter-diaphragm control WEST ELECTRIC CO Ltd 14 Oct 1975 [18 Oct 1974 (2)] 41946/75 Heading G2A A shutter-diaphragm is driven by a pulsed step motor to provide an aperture and exposure time dependent on subject brightness; the movement of the shutter-diaphragm blades themselves being used to control pulse generation. As shown, upon shutter release: (a) a switch SW1 moves to contact b, a capacitor 22 charges up to turn on a transistor 24 which turns off a transistor 26 whereby voltage is applied to an input T of a drive circuit 21 to start motor 1 and open blades 4 and 5. (b) movement of the blades causes a grating 17 to admit light from a source 18 to a photo-cell 19 which turns on a transistor 28 to trigger a monostable multi-vibrator 36 to its unstable state. This turns on transistor 26 to halt the motor. The aperture has by now opened to f/16. (c) when the multi-vibrator 36 returns to its stable state the motor 1 restarts, opens the blades to f/8 and is switched off again by reason of grating 17 and photo-cell 19. (d) Pulsed opening of the blades continues under the control of grating 17, photo-cell 19 and multivibrator 36 until a capacitor 31 is charged through an exposure controlling photo-cell 16, whereupon a transistor 32 is turned on. This sends a "reverse" instruction to input W of circuit 21, and then, after a delay due to capacitor 35, turns off a transistor 33 so that transistor 26 can turn off and restart the motor 1. (e) the motor 1 closes the blades as before in steps, being turned off and on by grating 17 and photo-cell 19 which control transistor 33 and thereby periodically connect transistor 26 to transistor 32 to turn transistor 26 on and off. The opening steps are spaced by the periods in which the multi-vibrator 36 is in its unstable state and are therefore longer than the closing steps which are spaced by the periods of illumination and non-illumination of photo-cell 19 through grating 17. In Fig. 4 (not shown) the shutter-diaphragm is opened as in Fig. 2 by pulses derived from the grating 17 and a multi-vibrator (39) and is stopped by a first photometric circuit (37) to determine the aperture value. A second photometric circuit (54) initiates shutter closure and thus controls exposure time. In this embodiment the shutter closes at the same rate as it opens since the multi-vibrator (39) is involved in both movements. Instead of the grating 17, light source 18 and photo-cell 19, a row of magnets or electrical contacts may be used.
Patent GB-1401474-A (GB)
Title: Temperature control system for centrifugal liquid chilling machines
IPC: H02P27/02
Filed: 1972-09-12
Abstract: 1401474 Automatic control of refrigeration systems BORG-WARNER CORP 12 Sept 1972 [17 Sept 1971] 42230/72 Heading G3R A refrigeration system, suitable for use in air conditioning a building, includes a compressor and two independent sensors responsive to refrigerant output temperature at two different times. As shown, freon refrigerant passes from a centrifugal compressor 16 driven by a motor 17, to a condenser 20, expansion device 22 and evaporator 24, before returning to the compressor. The evaporator 24 includes a heat exchanger 26 using water or other liquid, and the output line 26R contains a temperature sensing device 28 for transmitting an actual temperature signal to a regulator 32. The signal is compared with a reference voltage to produce an output signal which controls a motor 36 for setting vanes 13 in the compressor 16 and thus vary its capacity so as to regulate the output temperature. The regulator also supplies a temperature recorder 62 and receives an input from motor current sensors 46, 47, 48 which over-rides the temperature signal and adjusts the vanes 13 if the motor load tends to become excessive. The temperature sensor 28 includes two thermistors (283, 287), Fig. 2 (not shown), mounted in resin such that one has a fast response while the other has a time lag. When the liquid temperature is changing, the difference in sensed temperatures is proportional to the rate of change, and use of two such signals improves the system response to rapid temperature changes and prevents hunting. If the temperature sensed by the fast sensor falls below a pre-set level, a transistor switches a relay controller to disconnect the supply to motor 17, Fig. 6 (not shown). The regulator 32, Fig. 5 (not shown), has a dead band characteristic and includes a pulse width modulator supplied by a sawtooth generator. The motor control circuit may include a triac.
Patent GB-1115966-A (GB)
Title: Rotary magnetic switches
IPC: H01H36/00
Filed: 1966-09-22
Abstract: 1,115,966. Movable magnet switches. G. B. JEFFERY. 22 Sept., 1966, No. 42416/66. Heading H1N. A rotary switch having a magnetized member 6 movable to actuate sealed magnetic reed contact units 8 has one of the reeds or an extension thereof " closely adjacent " the path of the member 6. The member 6 on the shaft 5 is polarized by a permanent magnet 7 or an electromagnet and has projection 12 which passes close to the reed contacts 10 outside the glass enclosures of the contact units. A magnetic member or disc at the other end of the permanent magnet may also pass near the reed 10 (Figs. 6 and 7, not shown). Alternatively the magnet may be on the shaft between the contact units with members 6 at each end cooperating with the contact reeds (Fig. 8, not shown). The ends of the reeds 10 may be fitted into magnetic extension pieces having edges close to the path of the member 6 (Figs. 10 and 11, not shown). In Fig. 12, the projection 12 is axial and the sealed magnetic contact units 8 are radially mounted.
Patent GB-1412720-A (GB)
Title: Container-like receptacle
IPC: B65D88/26
Filed: 1973-09-10
Abstract: 1412720 Discharging hoppers; containers with dispensers SCHMALBACH-LUBECAWERKE AG 10 Sept 1973 [21 Feb 1973] 42480/73 Headings B8S and B8P A receptacle for receiving and delivering small piece-goods, e.g. crown caps, comprises a parallelepiped rigid container body 1 having an open upper end 5, and the lower end communicating through a funnel 6 with a closable opening 8, the container being supported on legs 10 corresponding in length with that of the funnel and having its inner space A enclosed in a lining 11, the ends of which, in use, overlap each other. The container body 1 is integrally formed with the legs 10, by tubes 3 and has grid like walls 4, the funnel 6 being formed from sheet metal. The lining 11, formed of a tubular plastic foil, prevents entry of dust to the goods and closes the grid walls 4, the lower overlapping end 8 of the lining being supported at the funnel outlet on a slide valve 9 which manually or mechanically controls the discharge of caps as shown in Fig. 2 (not shown). Gusset plates 12 may be secured to the upper corners of the receptacle to facilitate stacking thereof, and the receptacle may be secured to a pallet 2 suitably apertured for discharge from the funnel outlet.
Patent GB-1505785-A (GB)
Title: Display lamp having a translucent envelope
IPC: F21Y105/00
Filed: 1976-10-13
Abstract: 1505785 Lamp display devices CRESTWORTH Ltd 13 Oct 1976 42567/76 Heading G5C A display lamp consists of a container 14 containing a liquid in which insoluble reflective flakes are circulated by convection currents caused by an illuminating lamp 16, the container being surrounded by an envelope 18 which is at least partly translucent. The envelope 18 may be rectangular, cylindrical, pyramidal or spherical (as shown), and is supported on an outer vase 12 to which it is preferably sealed at 20 so that any liquid escaping is retained in the base.
Patent GB-1445079-A (GB)
Title: Filter plant for filtering lead-containing gases
IPC: B01D46/02
Filed: 1972-09-18
Abstract: 1445079 Separating solids from gas ELECTRIC POWER STORAGE Ltd 1 Nov 1973 [18 Sept 1972 (2)] 43094/72 and 43097/72 Heading BIT An apparatus for separating lead dust from a flue gas comprises rectangular chambers 10, each containing four parallel rows of sleeves 20, having a width not in excess of 4' 6", and being provided with doors 27 and 45 on each longitudinal side so that the bottom and top connections of the all sleeves 20 can be reached by a man without entering the chamber. Walkways 40, 46 are provided at suitable levels. In use gas is smoked from gas-supplying manifold 11 by a suction fan (not shown) connected to suction manifold 13. To inspect or clean the sleeves in one chamber, a damper 47 in pipe 12 is closed, damper 48 is partially closed so that the chamber is still subjected to a little suction via manifold 11 and the other chambers which are still in operation, and the sleeves in said one chamber are shaken by the mechanism 23. The dislodged solids drop into hopper 29 from which they are removed by screw 30. The chambers may be made of panels 25 and situated within framework 50 which may be provided with cladding.
Patent GB-1063107-A (GB)
Title: Polyolefinic epoxy resins
Inventor: ANDREI TEODOR
IPC: C08C19/06
Filed: 1963-11-04
Abstract: A copolymer of butadiene and piperylene is epoxidized by reaction with a mixture of glacial acetic acid and aqueous hydrogen peroxide of 45-50% concentration by weight, in the presence of a polystyrene-divinyl benzene sulphonate ion-exchange resin in the acid form as catalyst and at a temperature of 60-65 DEG  C.  The reaction is preferably carried out in an inert aromatic hydrocarbon solvent, e.g. toluene.
Patent GB-1025361-A (GB)
Title: Improvements relating to weighing apparatus employing electrical weight indication
Inventor: CHILTON JOHN MOORHOUSE
IPC: G01G23/46
Filed: 1961-12-06
Abstract: 1,025,361. Transistor amplifier and bi-stable circuits. W. & T. AVERY Ltd. Dec. 6, 1962 [Dec. 6, 1961], No. 43612/61. Heading H3T. ]Also in Division G4] In a weighing machine of the type in which a weight encoded disc is read photo-electrically, means are provided to prevent spurious alterations of the reading during recording thereof. The output of the photo-voltaic cell 1 is chopped at P and amplified at Q to give a signal which is rectified in the voltage doubler R. The output of R is applied through an impedence matching emitter following S to control a Schmidt trigger T. When it is desired to take reading, switches 26a and 26b are opened to remove the negative supply from amplifier Q and the positive supply from the diode 25. A positive feedback path is thus established through diode 25 to retain it in the same state while a reading is being taken from 0.
Patent GB-1204152-A (GB)
Title: Electrode assemblies for use in carrying out electrochemical machining processes
Inventor: STARK GUSTAV
IPC: B23H3/04
Filed: 1967-09-27
Abstract: 1,204,152. Electro-chemical machinery. SIEMENS A.G. Sept.27, 1967, No.44063/67. Heading C7B. An electro-chemical machining electrode assembly (e.g. for producing tip seals on turbine blades) comprises a flange 11, an electrolyte inlet tube 12 and a metallic electrode foot 13 and has an electrolyte guide 14 of electrically non- conducting plastics material screwed to it at 121. The guide is recessed at 19. As viewed in the top of a turbine blade 125. The electrode has been moved as indicated at 124 with the lateral side 120 of the electrolyte guide 14 in contact with the blade 125 while electrolyte has been supplied as indicated at 123. Figs.1b and 2a (not shown) illustrate an electrode which is similar but which has a plate (122) soldered to the electrode foot 13 so as to produce a differently shaped cavity. By the production of the cavities illustrated in Figs. 2b (and 2a, not shown), tip seals are formed on the turbine blades. In an analogous manner, dovetail slots, flat dies and die-casting moulds may be formed.