baber/WOPTO huggingface dataset:
Patent GB-1507189-A (GB)
Title: Folded dipole antenna
IPC: H01Q9/26
Filed: 1975-06-24
Abstract: 1507189 Folded dipoles FRANCE ARMED FORCES MINISTER OF 24 June 1975 [18 July 1974] 26837/75 Heading H4A A folded dipole antenna comprises one side 1 as two limbs 6, 7 and a folded side 2 provided by a cylindrical part connected at each end to a limb, each limb being generally cylindrical and having a diameter of the order of ten times that of the folded part 2 and frusto-conical portions at its free end, the smaller bases of the portions facing each other across a symmetrically disposed gap, the antenna including a line 13 extending through one of the limbs 6, the line comprising a central conductor 14 which extends across the gap and penetrates coaxially into an axial opening 11 through the other limb 7, the central conductor 26 being insulated 27 from the other limb. As described a folded dipole antenna of a third the conventional length for a given operating frequency has a fat cylindrical arm in two limbs 6, 7 joined and parallel to a thinner cylindrical part 2 by cheeks 3, 4, the diameter ratio of the two cylinders being about ten. The limbs 6, 7 are closely spaced at frusto-conical ends and one limb 6 contains an antiresonant circuit enclosed in shell halves 9, (10) of an adjustable capacitor 24 and a wire 28 acting as a self inductance at the operating frequency of about 400 MHz. A 50 ohm coaxial line 13 is fed through a welded support 5 and the hollow cylinder 12 where the outer conductor 16 is butt welded to the end 17. The centre conductor 14 of the line 13 is taken to the strip 21 of the antiresonant circuit and thence, as lead 26, into the axial bore 11 of the part 7 to a distance of about one twentieth of the operating wavelength. The lead 26 is insulated from the part 7 but capacitatively coupled thereto by a cylinder or tube 27 of insulating material that provides a small adjustable capacitor. The cone angle α is preferably about 110 degrees and the antenna may be placed one seventh of the operating wavelength in front of a reflector to show good directional gain.
Patent GB-439527-A (GB)
Title: Improvements in bottom-casting hollow ingots
IPC: B22D7/04
Filed: 1934-09-18
Abstract: 439,527. Casting composite ingots; making drill steels. UNION STEEL CORPORATION (OF SOUTH AFRICA), Ltd., 82, Marshall Street, Johannesburg, South Africa. Sept. 18, 1934, No. 26840. Convention date, March 6. [Classes 83 (i) and 83 (ii)] Apparatus for bottom-casting hollow ingots comprises a runner block C supporting mould halves A, B, each integral with a top portion 4, 5, between which the core 11 and liner tube 10 are clamped, the halves being clamped together by wedges 16, 17 engaging buttresses 13, 14. The buttresses may be of sector shape and grouped about the feed point for the metal, the moulds being held in the radial spaces 15 between the buttresses. The runner block C is that described in Specification 439,526. Vents 12 are provided in the mould. The dome-shaped upper end of the mould produces an ingot which may be rolled with a minimum of waste, the product being, for example, a drill steel with stainless iron lining.
Patent GB-505082-A (GB)
Title: Improvements relating to electric switches employing mercury or other conducting liquid
IPC: H01H29/18
Filed: 1937-10-04
Abstract: 505,082. Mercury switches. CIANCHI, A. Oct. 4, 1937, No. 26867. [Class 38 (v)] In a switch wherein a plunger 1 of glass or quartz carrying a magnetic armature 3 floats in mercury 5 in a vessel 6, an electrode 7 co-operates with mercury 4 in a cup formed in the plunger 1, an electrode 19 is in contact with mercury in a side cup and an electrode 18 is in contact with the mercury .5. Over the upper edge of the cup mercury can flow to maintain constant the level of mercury in the cup. A conductor 2 through the plunger 1 connects the bodies of mercury 4 and 5. Upon failure of a source of current M which supplies a load L, a solenoid 12 is de-energized and allows the plunger 1 to sink guided by the electrode 7, the connection between electrode 7 and mercury 4 is broken, and the mercury 5 overflows into the side cup to make connection between electrodes 18 and 19 so that load L is now supplied from a secondary source E. Holes 10 and 11 allow the escape of superfluous mercury from the plunger. In modifications described, the plunger 1 may be of conducting material, or the electrode 7 may have a cup with or without a small hole which gives a delay break. Two switches may bo connected with a common solenoid as an alternative method of providing an auxiliary supply.
Patent GB-473730-A (GB)
Title: Improvements in sole levelling apparatus for boots and shoes
IPC: A43D35/00
Filed: 1936-10-05
Abstract: 473,730. Sole - levelling machines. SANDT - RAAB AKT. - GES. SCHUHMASCHINEN - UND WERKZEUGFABRIK PIRMASENS. Oct. 5, 1936, Nos. 26916 and 26917. Convention dates, Oct. 4, 1935 and Nov. 23, 1935. [Class 17 (i)] An elongated form contacts with the whole length of the insole inside the shoe and is supported on a pillar having an extension supporting the toe part of the form. The pillar rises and falls for the levelling operation and to allow work change, respectively, and the form and pillar are so arranged that on the descent of the pillar the form is slid forwardly thereon to facilitate the change of work. A strut 27 having lost-motion connection with a fixed part of the machine is connected by a link 28 with a pin 29 at the heel end of the form 26. The connection shown allows change of form on this being slid rearwardly. In a modification, the pillar and form are connected by an arcuate guide 35, and the link 43 between the two is pivoted to a sleeve 49 guided vertically and co-operating with a fixed surface 51 to move the form to a convenient work-changing position on descent of the pillar. The form 6 engaging the tread face of the sole is screwed to a plate 5 guided to slide transversely of a part spherical member 3, a spring-pressed ball 4 determining its normal position.
Patent GB-831654-A (GB)
Title: Improvements in or relating to selective linear movement measuring machine tool
Inventor: KNOSP ROBERT N
IPC: B23Q16/00
Filed: 1956-09-03
Abstract: 831,654. Drilling. FOSDICK MACHINE TOOL CO. Sept. 3, 1956, No. 26939/56. Class 83(3). A machine comprises abutments 23, 22, Figs. 34 and 40, on two relatively-movable elements 5, 7, a series of length-measuring rods 17, 18, 90-93, and means 61-66, Figs. 2 and 5, for selectively moving the rods between the abutments to provide a length-measurement equal to the sum of the lengths of the selected rods. A jig-boring machine comprises a slide 5 and a table 7 with identical measuring-devices 15, 16, having sets of conically-ended gauge-rods 17, 18, 20, Fig. 34, to give dimensions from 0.0000 to 49,9999 inches. The rods for the table 7 only will be described. Initially, the rods are set to a zero datum position by locating a base reference point 3 on the work 8 with reference to the axis of the drill 34. Subsequently, the table is moved to the left to clear the rods, the rods are selected, and the table is finally moved to the right to the required position by a hand wheel 10, or by a rapid traverse motor 25, Fig. 40, through a screw 11 and nut 12. In the latter case, the motor 25 is stopped towards the end of the traverse by a switch actuated by a shoulder 47, Fig. 38, on the rod 23, and a motor 26 completes the traverse by rotating the nut 12 through a splined rod 31 and worm-gearing 32, 33, 28. The motor 26 is stopped by a switch operated by an abutment 48 on the rod 23 and a lever 50. In its final position, the rod 23 operates a dial gauge 36 through a stop 42 and a block 43. The table movement required is set by the series of dials 61-66 which give a direct reading. The dials 63-66, giving the four decimal positions, actually contain the measuring-rods, the zero-rod of each set being 1 inch in length. The dial 62 for the one-inch rods 17 is connected to a hexagonal selector-shaft 71, Fig. 5, by gears 72. The one-inch rods 17 are carried in a turret 120, Fig. 31, movable with the table, and above the level of the ten-inch rods in their non-operative positions. Rotation of the dial 62 positions the appropriate one-inch rod in alignment with the end abutment-rod 22. The turret 120, together with the rod 22, are mounted for axial adjustment on the table in order initially to set the dial gauge 36 to zero position. Rotation of the dial 61 rotates gears 70, a crank 135 and a shaft 68 successively to raise the ten-inch rods to operative position through clutches A<SP>1</SP>-D<SP>1</SP>, Fig. 19, connected to elevating arms 142, 143. Each clutch becomes operative at a different angular position, and includes a torsion spring to take up excess rotation as the movement of its arm 142 is checked in the correct position by a set-screw. In a modification, the ten-inch rods are raised to operative position by a set of cams which rotate tubes which support the rods, and which can telescope together.
Patent GB-859577-A (GB)
Title: Collapsible motor vehicle
Inventor: STRAUSSLER NICHOLAS P S
IPC: B62K5/04
Filed: 1958-08-21
Abstract: 859,577. Vehicle frames. STRAUSSLER, N. P. S. Aug. 21 1958, No. 26970/58. Classes 79(2), 79(4) and 79(5). A motor vehicle chassis carrying an engine M, a seat and a steering wheel 12 includes two side members each constituted by relatively slidable front and rear sections 3, 4 adapted to be locked in a running and in a telescoped position of the chassis, the seat being hinged to provide a space for the passage of the engine which is connected to two rear wheels by a change-speed gear 8, a differential 9 and shafts housed in a tubular cross-bar at the rear of the sections 4. A second cross-bar connects the front ends of the sections 3 and carries a collar 32 for supporting the steering column 12 which is connected to a single front wheel 11 by a ball-and-socket joint 31 and a device C. When the vehicle is to be telescoped for storage, a pin 14 which passes through each of the sections 3, 4 and a guide member 13 is removed and the sections moved towards each other until the front of section 4 is level with that of section 3. Two frames 17, 18 over which cloth is stretched to form the seat are connected by pivots 26 and cables 19 so that they may be folded towards each other after supports 23, 24 have been removed from the sections 3, 4. Pivoted tie rods 27 hold the seat to the frame. The steering column 30 is folded to a horizontal position after the two parts of a coupling 35, 36 have been disengaged.
Patent GB-172753-A (GB)
Title: Improvements in pulleys
IPC: B66D3/04
Filed: 1920-09-22
Abstract: 172,753. Schermuly, A. W. L. Sept. 22,1920. Pulley-blocks. - In pulleyblccks of the type in which the weight of the load is transmitted by links or the like directly from the pin or axle of the sleeve to the suspending means, without passing through the framing of the block, the load-carrying links are formed of twisted wire or rope. Fig. 2 shows one construction in which an endless rope 5 is looped round each end of the pin 2 and passes through eyes 6<a> and round recesses 5<b> in the member 6 carrying the suspension swivel eye 8. In some cases a second endless rope 11 may be arranged similarly between the pin and a becket 10. Guards 4 keep the loops from leaving the pin. The thin side plates 3 are notched to engage the member 6 so that by removing one of the loops from the pin the member 6 can be lifted to insert the hauling rope. Fig. 4 shows a modified arrangement for a two-pulley sheave. The endless rope 5 has two loops engaging the pin, and two other loops passing round the suspension member 12. A distancepiece 6 is provided, fitted with eyes as before, and additional retaining-pieces 13 riveted to the side plates. Either loop can be removed from the pin to admit the haulage rope to the corresponding sheave. Fig. 6 shows a further modification in which the distance-member is made in two parts 6<c>, 6<d> which slide in slots in the framing. The pressure of the, load causes the two parts to be pressed inwards by the ropes until they abut as shown. To insert the haulage rope, one of the upper loops is removed from the suspension member and the rope then passed between the members 6<e>, 6<d>, pressing them apart in passing.
Patent GB-758170-A (GB)
Title: Process and production of granular, non-caking ammonium sulphate-ammonium nitrate
IPC: C01C1/248
Filed: 1954-09-17
Abstract: Granular non-caking ammonium sulphate-ammonium nitrate is obtained by subjecting after granulation a slightly acid ammonium sulphate-ammonium nitrate mixture which contains an added iron salt to treatment with gaseous ammonia to produce iron hydroxide and/or oxide substantially only on the surface of the granules. According to an example an ammonium sulphate-ammonium nitrate melt was produced in a saturator by introducing nitric and sulphuric acids and gaseous ammonia and adding about 0.8 per cent of phonolite and 0.8 per cent of iron sulphate.  During the cooling and solidification of the melt it was granulated in a worm followed by a rotary drum whereby a white granular sulphate nitrate mixture containing 0.4 to 0.5 per cent Fe2O3 as ferric sulphate and 0.1 per cent or less of free acid was obtained.  Gaseous ammonia and small amounts of water vapour were passed into the rotary drum whereby about 0.1 per cent of Fe2O3 in the form of brown iron hydroxide was formed on the surface of the granules.  The treated fertilizer was further cooled by passing it over louvred surfaces through which cooled air was passed upwardly. Alternatively gaseous ammonia may be blown directly into the cold air used for cooling the material in which case small amounts of water vapour are supplied through nozzles to the sulphate-nitrate granules as they are transferred from the rotary drum to the cooling device, in which case the apparatus of Specification 665,032 [Group XIII] may be used.ALSO:Granular non-caking ammonium sulphate-ammonium nitrate is obtained by subjecting after granulation a slightly acid ammonium sulphate-ammonium nitrate mixture which contains an added iron salt to treatment with gaseous ammonia to produce iron hydroxide and/or oxide substantially only on the surface of the granules. According to an example, an ammonium sulphate-ammonium nitrate melt was produced in a saturator by introducing nitric and sulphuric acids and gaseous ammonia and adding about 0.8 per cent of phonolite and 0.8 per cent of iron sulphate.  During the cooling and solidification of the melt it was granulated in a worm followed by a rotary drum whereby a white granular sulphate nitrate mixture containing 0.4 to 0.5 per cent Fe2O3 as ferric sulphate and 0.1 per cent or less of free acid was obtained.  Gaseous ammonia and small amounts of water vapour were passed into the rotary drum whereby about 0.1 per cent of Fe2O3 in the form of brown iron hydroxide was formed on the surface of the granules.  The treated fertilizer was further cooled by passing it over louvred surfaces through which cooled air was passed upwardly. Alternatively, gaseous ammonia may be blown directly into the cold air used for cooling the material in which case small amounts of water vapour are supplied through nozzles to the sulphate nitrate granules as they are transferred from the rotary drum to the cooling device, in which case the apparatus of Specification 665,032 [Group XIII] may be used.
Patent GB-956094-A (GB)
Title: Automatic blood pressure meter
IPC: A61B5/022
Filed: 1962-07-13
Abstract: 956,094. Sphygmometers. GODART-MANIMEX N.V. July 13, 1962 [July 18, 1961; March 29, 1962], No. 27079/62. Heading A5K. An automatic blood-pressure measuring device including at least one inflatable cuff and a pressure meter, comprises a member responsive to the phase difference between the bloodpressure impulses in two closely-spaced inflatable cuffs 1, 2, the moment at which this phase difference disappears indicating when the pressure in the cuffs is the diastolic pressure. The two cuffs 1, 2 are attached to each other so that when applied to the patient's arm they overlap. One cuff 2 communicates with the other cuff 1 through conduits 11D, 15, a damping chamber 10 and conduits 14, 12 in a block 9, a thermistor 13 being located between conduits 14 and 12. A third cuff 7 located in a lower position on the same arm is connected to a pressure pulse detector 8. In use, the three cuffs are inflated until the pulse stops. The pressure in the cuffs is then gradually released through a passage 11F in the block 9. As the pressure falls, bloodpressure pulses in the two upper cuffs are out of phase and produce a cooling air current over the thermistor to vary the voltage across it. This voltage is amplified (Fig. 3) and then divided, a major portion being rectified and applied through a cathode follower 23 to a resistor 24. The other portion is similarly rectified and applied to a resistor 29 through a high discharge time constant condenser 27 and a cathode follower 28, the voltage across the resistor 29 thus being maintained at its maximum value. The diastolic pressure is measured when the pressure in the cuffs 1, 2 has fallen to such a value that blood starts to flow freely, the phase difference between the pulses in the two upper cuffs then disappearing so that the air current traversing the thermistor and the voltage generated across it suddenly fall to a minimum. This causes the voltage across resistor 24 to fall below that across the resistor 29. This operates a member 30, comprising a galvanometer, a galvanometer relay or an electromagnetic relay, which either indicates that the pressure in the cuffs should be measured or operates a switch 37 in a measuring circuit (Fig. 4), which includes a pressure meter 43. The measuring circuit includes a transducer having a core 33 which is moved between primary and secondary windings 31, 32 in dependence upon pressure in the uppermost cuff 1 so that a voltage proportional to the pressure is produced and applied through the switch 37 to a resistor 40 to be compared by the meter 43 with a fixed voltage applied to a resistor 41. Systolic pressure is also indicated by the meter 43, the switch 37 in the measuring circuit being operated by the detector 8 when blood-pressure pulses first appear in the lower cuff as the cuff pressure is falling. The detector comprises either a thermistor associated with the lower cuff or a transducer similar to that used in the measuring circuit.
Patent GB-191480-A (GB)
Title: Improvements in and relating to devices for use in filing papers, documents and the like
IPC: B42F9/00
Filed: 1921-10-13
Abstract: 191,480. Arrowsmith, W. L. Oct. 13, 1921. Attaching files to covers and supports; clamping-devices; covers.-Devices for use in filing papers, of the kind comprising clips having expanding-jaws, are provided with separate means for holding the clip back downwards and the portion of the papers within the clip substantially vertical. As applied to a spring clip having pivoted levers in which the back of the clip provides a fulcrum, a holder 12 of springy material is secured to a support 3 and engages the clip. The holder may be formed in two portions, and one portion may be slotted for the reception of an adjusting-screw. As shown in Fig. 3, the holder may comprise two wooden blocks 17, 17a, one of which is spring-mounted upon the support. The holder may be mounted upon a relatively narrow back which may be provided with hinged side pieces 5a, 5b, Fig. 6. In this construction a pivoted member 22 provided with clips 24, 25 retains the parts in open relationship. The ends of the operating-levers are engaged by spring catches 21, one of which may be adapted to retain the lever in more or less permanent engagement with the support. The holder may be mounted within an ordinary cover having a flat, triangular, or curved back, with springs and catches to retain the file in the open or closed position. A board may be hinged to one of the side cover members and inserted between the leaves held within the file to provide a writing support.
Patent GB-1415025-A (GB)
Title: Adaptive braking control system
IPC: B60T8/70
Filed: 1973-06-07
Abstract: 1415025 Anti-skid systems BENDIX CORP 7 June 1973 [15 June 1972] 27248/73 Heading F2F  A vehicle anti-skid braking control system has generating means 16 for providing a signal proportional to positive or negative braked wheel acceleration to a comparator 22 with a reference bias level switchable from a first state to a second state, the comparator generating an output actuating an electrically operated valve for relieving brake pressure when the acceleration signal drops below the bias level; a first switching means is provided for switching the bias level in response to a comparison of negative vehicle acceleration with respect to a predetermined value. A tachometer 16 produces a pulsed wheel speed signal which is filtered, and differentiated and inverted at 20 to provide a positive signal for wheel deceleration (or a negative signal for acceleration) to the comparator 22 comprising back-to-back transistors. Initially, the signal is compared with a predetermined value G1, which, if exceeded decelerationwise, provides a "1" digital signal at a flip-flop reset input 23. The speed signal is also fed to a comparator 41 wherein it is compared with an 80% value of a memorized speed value taken when an output is initially received from the flip-flop, so that a "1" digital signal passes to a set input 25 of the flip-flop if the actual speed is greater than 50% of the memorized speed (non-skid). When the reset input 23 is a "1" digital signal, the flip-flop output Q is a "0" digital signal, which inverted, actuates a brake relief valve coil 32 if the brakes are actuated. Furthermore after a delay a further valve coil 40 is energized. When both the reset and set inputs 23, 25 are "0" signals, the output Q is in its previous state, but when the set input 25 becomes a "1" signal (non-skid condition) the output Q is a "1" signal, and the valves are not actuated. A timer circuit 29 upon valve actuation provides an output for a predetermined time period to switch the reference signal to a new value G2 which subsequent wheel acceleration must attain before the valves are de-energized by a "0" reset signal 23. A mercury switch 31 which is affected by vehicle deceleration controls a transistor which affects the bias of the comparator transistors so that the G1, G2 reference valves are altered, to take into account wheel-ground friction coefficient variation, but the G1-G2 difference remains the same.