baber/WOPTO huggingface dataset:
Patent GB-1311124-A (GB)
Title: Stud-welding
IPC: B23K9/20
Filed: 1970-04-02
Abstract: 1311124 Welding by pressure WARREN FASTENER CORP 2 April 1970 [3 April 1969 2 Jan 1970] 15566/70 Heading B3R In a method of and apparatus for arc-stud welding an electrically conductive arc shield 2 having a notched end surrounds the stud S or S<SP>1</SP> and provides with the workpiece M a current flow path of opposite direction to the current path in the stud. The arc shield may be of anti-oxidant-treated graphite of semi-conductive grade and may have an outer covering of steel or beryllium-copper to improve its current carrying properties. The arc-shield is preferably of conically-tapered form externally and is gripped against a conductive member 26 (or 88, Fig. 15) at the end of the tool by a complementarily shaped cap nut 32 (or 84). An insulating ring 12 of boron nitride, is preferably mounted internally of the arc-shield, being carried either by the arc shield in which it may be separably inserted, moulded in situ, or coated thereon, or alternatively carried by the tool, e.g. being screwed or clipped thereto. In one embodiment, Fig. 15, the stud S<SP>1</SP> is provided with a collar 66 of slightly greater diameter than the major diameter D of a threaded stem portion. In this embodiment the tool is provided at its operative end with a resiliently retractable guard 90 adapted to protect the arc shield.
Patent GB-424953-A (GB)
Title: Improvements in measuring or indicating apparatus based on the expansion of a metal wire
IPC: G01N25/36
Filed: 1933-05-30
Abstract: <PICT:0424953/III/1> In indicating or measuring devices depending on the thermal expansion of a heated wire resulting from the combustion of inflammable gases, the wire is subjected to tension at two points A and B.  The latter force takes up the extension due to the heating of the wire by the electric current; it is preferably applied at the end of the wire by means of an electromagnet h or a spring, and the movement is limited to the amount of extension produced by the heating current.  The other tension, preferably applied transversely at the middle of the wire, takes up the further expansion due to the presence of combustible gas, and operates an indicating or measuring device.
Patent GB-1321734-A (GB)
Title: Electromagnetic detection systems comprising separate transmitting  and receiving antennas
IPC: H01Q1/52
Filed: 1971-05-18
Abstract: 1321734 Aerials; duplex radio signalling THOMSON-CSF 18 May 1971 [20 May 1970] 15636/71 Headings H4A and H4L In a radio system which comprises separate side-by-side transmitting and receiving aerials, one or more centrally situated electrical conductors are provided near said aerials. One extremity of each conductor receives energy from the transmitting aerial, and the other extremity radiates towards the received. The amplitude and phase of the energy so coupled may be arranged so as to compensate for the energy which is directly coupled between the aerials. As described, an aerial assembly comprises co-linear transmitting and receiving portions 3, 4, Fig. 1, with respective conical end portions 5, 6 which serve both as supports and reflectors. Two compensating elements are provided, each comprising probes 7, 8 and a transmission line 9. These elements, which may be formed from lengths of coaxial cable which are stripped back at each end, are mounted at their centres 10 on the supports 5, 6. In a second embodiment, a cylindrical radome encloses the aerial assembly and conductors are provided around its centre (Fig. 2, not shown). They may be made of metal foil, or metallized dielectric material, and be secured by an adhesive. Alternatively, they may be produced by printed circuit techniques. Each may be shaped as a horizontal V, or a horizontal U, or a Z or X &c. In a third embodiment, for use in a proximity fuse, a transmitting aerial portion comprises a slotted waveguide 31, Fig. 3, between double conical reflectors 30, and a receiving aerial portion 32 constituted by an array of slots in a co-linear member. A conical radome 34 encloses the aerial assembly. Two diametrically positioned horizontal V conductors 33 are provided on the radome between the two aerial portions.
Patent GB-333640-A (GB)
Title: Improvements in pole scaffolding
IPC: E04G1/12
Filed: 1929-05-21
Abstract: 333,640. Sitz, F. May 21, 1929. Scaffolding. - Uprights are formed of two angles combined in box form and are joined together axially by interfitting joints formed by extending the end of one angle-iron d<1> beyond the end of the other d and securing to the extended angle an internal angle stiffening piece d<2> which expends beyond the end of d<1>. The sockets a for the reception of the uprights are also formed of angle-irons with similar interfitting joints. The braces f, h are formed of channel-section bars, and are supported one on each side of the uprights by short angle-irons e, the bolts f<1> and h<1> in the braces acting as distancing stops for the uprights. Inclined braces f<2> h<2> are also secured to the horizontal braces and to the uprights.
Patent GB-181704-A (GB)
IPC: A01B3/50
Filed: 1922-06-06
Abstract: 181,704. Kauffmann, H. June 15, 1921, [Convention date]. Motor implements.-The front part of a threewheeled motor plough consists of a cast-iron frame a on which the engine is mounted and which forms the gear-box and carries the bearings b, c for the counter-shaft and the axle of the driving-wheels respectively. The motor drives through a reverse gear 5, 6, 7 a pinion 1 meshing with the pinion 2 of the differential gear that drives pinions 3, 4 gear-wheels on the road engaging internally-toothed wheels. The rear members of the frame d carrying the steering-wheel are secured to the cast-iron frame a by screws e. The rim of the furrow wheel is of greater diameter than that of the land wheel but the land wheel is provided with irons which project beyond the rim some distance so that the wheel runs on these irons when travelling on hard roads and some compensation is given for the extra diameter of the furrow wheel; when ploughing, however, the irons of the land wheel sink into the ground and the plough is maintained approximately horizontal. Specification 150,704 is referred to. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also a U-shaped member f pivoted at the front of the frame a and carrying a cross rod g provided with grooves into which the front end of a multiple-furrow plough may be fitted. The cross rod may be raised by turning a screwed shaft h carrying a nut secured to the rod by a link i. The rear of the plough is provided with hooks k which engage the transverse part of a U-shaped member n which is pivoted at each side to a bracket which may be vertically adjusted by a screw m' to compensate for the lateral tilt of the plough. A wire cable, attached to the rear of the plough member, passes over pulleys p, q and is secured to the nut on the sl:aft h. This subject-matter does not appear in the Specification as accepted.
Patent GB-1180914-A (GB)
Title: Improvements in or relating to Photographic Type-composing Machines.
Inventor: MOYROUD LOUIS MARIUS
IPC: B41B17/10
Filed: 1966-04-07
Abstract: 1,180,914. Photographic type-composing machines. INTERNATIONAL PHOTON CORP 7 July, 1967 [7 April, 1966], No. 15788/66. Addition to 1,068,856. Heading B6W. [Also in Division G2] The apparatus disclosed in Specification 1,068,856 is modified in that the characters are carried on a drum 132, Fig. 1, and includes a field-flattening lens to view the curved 40- degree arc projection area as if it were flat. The characters are carved on matrix segments, each comprising a film strip 78, Fig. 12, consisting of two halves fitting into apertures 93 in a frame 76, and the characters are arranged in three rows 136, 138, 140 of different styles. The matrices may comprise chips 91, Fig. 14. The segments are locked on the drum by extensions 218, Fig. 19, of a locking ring 216 engaging extensions 84 of the segments. The light source is a cathode-ray tube 106, the beam of which is diverted horizontally to the desired position in the projection area to select the position on the film 8, and vertically to select the row under the control of a coded tape. The film is moved between lines under the control of two stepping motors, and is also moved in the same dimension in either direction as required to bring a character in any row and of any point size on to the same base line. The face plate of the tube is provided with optical fibres arranged to extend to a position adjacent the surface 17 of the drum and shaped as shown in Figs. 7, 8 or 10 at 18, 27 or 30, 31 or, as in Fig. 9, a lenticular plate 29 is placed adjacent the fibre optics face plate to produce rays of collimated light 38, and a lens 28 produces an image at 158. A block of optical fibres 32, Fig. 11, is provided adjacent the drum surface 17 towards the film plane 3 to project any point 15<SP>1</SP> of the surface to a point 16<SP>1</SP> of a flat surface. The light source may alternatively be a laser. Specification 956,966 is referred to.
Patent GB-682807-A (GB)
Title: Improvements in or relating to teleprinter apparatus, working on the start-stop principle
IPC: H04L17/18
Filed: 1950-06-23
Abstract: 682,807. Printing-telegraph receivers. SIEMENS & HALSKE AKT.-GES. June 23, 1950 [Nov. 12, 1948], No. 15798/50. Class 40 (iii). In a start-stop receiver, the receiving magnet is provided with two armatures, one of which has a large movement and is utilized to release the receiver shaft, whilst the second armature, which serves to control the selecting operations, has a relatively small movement. The armature 2, Fig. 4, having the large movement, carries a member 7 having a projection 8 in engagement with the end of a stop-lever 11 having a projection 11a which, in the stop position of the receiver shaft, engages a tooth 12a on a cam 12 on the receiver shaft 28. Shortly before the end of a revolution of the receiver shaft 28, a cam projection 10 engages the end 9 of the lever 7 to raise the armature 2 to the magnet 1 which holds the armature attracted. When the start impulse is received, the armature 2 falls away, removing the projection 8 from engagement with the end of the lever 11 which is cammed out of engagement by the tooth 12a on the cam 12. The second armature 3, Fig. 1, has an arm 3a engaging a cam 29 and is rocked towards the magnet at the middle of each selecting code element. A second arm has an end portion 16 associated with a projection 15 on a pivoted lever 14 having a portion 14a engaging a cam 30 formed with projections and recesses. In the released position of the armature 3, the projection 16 is opposite the projection 15 and blocks the lever 14 against movement at the time when portion 14a is associated with a recess in the cam 30. The lever 14 carries a bar 19 spanning five T-members 18 connected at ball-joints 23 to levers 17 having arms associated with five cams N1 ... N5, solely N5 being shown, on the shaft 28. The levers 17 sequentially raise the T- members 18, which are moved to the left by stop 22 and on subsequent downward movement are selectively moved to the right by the bar 19 if the lever 14 has been permitted to rotate anticlockwise in response to a code impulse energizing the magnet 1. Towards the end of the revolution of the shaft 28 the levers 17 are simultaneously rocked anticlockwise by engagement with recesses in the cams N1 ... N5 and the T-members 18 are moved downwardly so that one or the other of two basal projections engages a projection on the associated sword member 24 to effect the setting of the selector bar 25.
Patent GB-582705-A (GB)
Title: Improvements relating to fuzes and to the setting thereof
IPC: F42C9/04
Filed: 1940-10-28
Abstract: 582,705. Electric synchronizers. MIDGLEY, A. H., and GREY, D. J. Oct. 28, 1940, No. 15801. [Class 40 (iii)] [Also in Groups XXI and XXXVIII] The time fuze of a shell is set after the shell has been placed in the gun and at the instant of firing in order to obviate the error which occurs in the time interval between setting the fuze and inserting the shell in the gun and firing. The setting of the fuze and the operation of firing are under the control of a predictor, the indicating arm of which coacts with a synchronizer external to the gun and reproducing the position of the setting mechanism. The means employed comprise a setting clockwork mechanism e for setting the race c which is slotted to receive a " hand " b on a " timing " mechanism a which causes detonation and bursting of the shell. The setting mechanism is slidably mounted in the shell body so that when the shell is fired, the setting mechanism moves backward due to inertia and the race c is locked by pins in the position regulated by the predictor arm. The race c is also provided with a stop h adapted to contact a fixed reed g once in each rotation and the sound is adapted to be transmitted by a microphone i through an amplifying set il to a magnet m. This magnet is adapted to operate a sliding arm l having two stops l<1>, l<2> adapted to contact with notches kl, k2 respectively of a double cam mounted with friction on the spindle of a gramophone motor having a fly-wheel k. The cam carries a contact n of the firing circuit, the other contact being constituted by the adjustable arm p of a predictor. If the speed of the fly-wheel k is faster than that of the race c, the stop l<1> engages the notch on the cam and reduces it, while if the speed of the fly-wheel is lower than that of the race c, the pin l<2> engages the inclined notch k<2> and forces the speed up, so that this gear acts as a synchronizer to the setting gear rotation. The action is as follows : the fly-wheel k is set in rotation and a clutch r<2> in the shell head is released by magnetic action as the shell is inserted in the gun so that the setting gear is released and the race c is rotated. At the first impulse due to the reed, the electromagnet m. is influenced to attract the bar l and the cams revolve with the fly-wheel and the speed is synchronized with that of the race c. As the firing switch o is closed, the gun will fire as soon as the contact n makes with the arm p and the setting gear is locked by pins, the inertia causing it to slide in the shell as the shell leaves the gun. The timing mechanism a is automatically started at this instant so that the detonating arm b now begins to rotate and after an interval it is in alignment with the recess in the setting race and so detonates the shell, the angle between this recess and the arm having been controlled by the synchronizer k and predictor arm p.
Patent GB-1237627-A (GB)
Title: Improvements relating to electrically driven dry shavers
Inventor: BROWN NORMAN JOSEPH
IPC: B26B19/28
Filed: 1969-03-26
Abstract: 1,237,627. Dry shavers. GILLETTE INDUSTRIES Ltd. 17 March, 1970 [26 March, 1969], No. 15849/69. Heading B4B. [Also in Division H2] An electrically-driven dry shaver comprises a cutter holder 3 mounted for rectilinear reciprocating movement, the drive means for the cutter holder comprising a stationary permanent magnet system 5a, an electric coil 8b disposed in the magnetic field of that system and secured to the cutter holder for rectilinear reciprocation therewith, and means for supplying alternating electric current to the coil in order to drive the cutter holder in opposite directions alternately by the direct application of electromagnetic forces. As shown in Fig. 1 a pair of permanent magnets 5a, 5b are each secured, e.g. by adhesive, to shells 11a, 11b which are held between the halves 1, 2 of a casing made from, e.g., nylon. Washers 12 are press-fitted into each shell in order to provide air gaps 13a, 13b; the magnets are magnetized in an axial manner. Driving coils 8a, 8b are mounted on the cutter holder 3 so as to move within the air gaps under the action of springs 6, 7, the holder being slidable on a rod 4 fixed to the casing half 1. The casing contains a rechargeable battery 15, a switch 16 and a transistor oscillator and amplifier 17. In modifications, the springs 6, 7 may be replaced by annular diaphragms (Fig. 3) or leaf springs (Figs. 4 and 5). The permanent magnets may be of rectangular cross-section (Fig. 7). The shaver may also be adapted to operate from main voltage through a step-down transformer.
Patent GB-481429-A (GB)
Title: Improvements in and relating to methods and means for the treatment of gases
IPC: B01D53/34
Filed: 1936-06-06
Abstract: One or more constituents are eliminated from gas mixtures by treatment with porous active carbon impregnated with a solution of an electrolyte adapted on electrolysis to form a reagent which fixes or destroys the adsorbed material, and the gas mixture to be treated is passed through the moist impregnated carbon while the latter is subjected to the action of continuous or intermittent direct current. The electrolyte may be a chloride, preferably a hygroscopic chloride such as calcium chloride.  The carbon may be regenerated by washing out the electrolyte, reactivating and reimpregnating, or by heating. The adsorbent may be arranged on a series of trays in a tower.  The gas is introduced at the base of the tower, and each layer is subjected to the action of an electric current.  According to an example, 1 part of granular active carbon was soaked in 0,3 pts. of calcium chloride in 0,5 pts. of water, and placed in glass tubes. The carbon was held in position by graphite discs acting as electrodes.  18 volts was applied, and a current between 1,5 and 2,5 amps. was passed through the adsorbent.  It removed completely the odours arising from decaying animal or vegetable matter.  The effluent gases from glue manufacture may be treated, and organic sulphur compounds removed from flue or town gas.
Patent GB-1278571-A (GB)
Title: Hydraulic pumps having control systems
Inventor: SKINNER ROBERT THOMAS JOHN
IPC: F04B49/08
Filed: 1968-04-03
Abstract: 1278571 Hydrostatic transmission JOSEPH LUCAS (INDUSTRIES) Ltd 19 June 1969 [3 April 1968] 15964/68 Heading F2D [Also in Division G3] A variable-displacement pump has a swashplate 11 positioned by a piston 15 biased rightwards by delivery pressure acting on its lefthand end and responsive to a control pressure in chamber 28 connectable by spool 21 to the delivery line via 29, 20 and 23-26 and to drain via 30-32. Delivery pressure acts on spool 21 against spring 33 acting through a lever 36 pivoted on rollers 38. The spring is carried by extension 34 of piston 15, and axial movement of the latter causes rollers 38 to move along grooves 40 thereby varying the pivot point such as to vary the controlled pressure level of the pump in the sense to maintain the driving torque of a transmission constant. Hook 41 provides a stop and manual over-ride. In Figs. 2 and 3 (not shown), a biased double-acting displacement control piston is used with a hollow spool which, in Fig. 3, is pivoted to the lever, the spring acting in the opposite direction to that shown in Fig. 1, and the rollers being located on the opposite face of the lever. In a modification, grooves 40 are profiled to maintain constant delivery pressure.
Patent GB-185830-A (GB)
Title: Improvements in or relating to the mounting of the connecting rods and coupling or side rods on the crank pins of the wheels of locomotives
IPC: F16H21/14
Filed: 1921-06-09
Abstract: 185,830. Spencer, A. June 9, 1921. Driving-gear of crank-type, coupling rods, and like mechanism, arrangement of.- The coupling and connecting rods are arranged so that one rod is mounted directly on the crank-pin, the other rod being mounted on the boss on the first. As shown, the coupling-red 2 is mounted on the crank-pin 1 a bush 5 being provided. The connecting-rod 3 is journaled on the boss 4a, the bearing comprising a block 8 mounted in a rectangular aperture in the connecting-rod and fixed by means of a cotter 9.
Patent GB-476432-A (GB)
Title: Improvements relating to railway signalling apparatus
IPC: B61L23/16
Filed: 1936-06-08
Abstract: 476,432. Railway signalling systems. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. June 8, 1936, No. 15987. Convention date, Jan. 22. [Class 105] A relatively high voltage is impressed on a track circuit by intermittently interrupting a magnetizing direct current for a transformer connected to the rails. Similar peak voltage devices may be carried on rail cars to provide a film break-down voltage thus to ensure an adequate shunt of the usual track circuit by the axles or by a contact brush device. The interruption rate gives a coding effect and may be provided by a pair of vibrating relays R<1>, R<2> of which the relay R<1> is energized over a back contact of the relay R<2> while the relay R<2> is energized over a front contact of the relay R<1>. The relay R<1> periodically lifts its contact 3 which firstly connects up to the transformer winding 7, the lead 5 from the track rail b and shortly thereafter causes a contact 1, 2 to be opened thereby opening the circuit by which a battery B<1> feeds the transformer winding 6. The resulting rapid decay of the magnetic flux causes a high voltage to be applied to the track circuit over the leads 4, 5. When the contact 3 drops, the contact 1, 2 re-closes whereby the battery B<1> begins to build up the flux once more. At the far end of the track circuit a codefollowing relay CF is operated and energizes two slow relays SR<1>, SR<2>. Since the track circuit pulses are only of short duration it may be necessary to prolong the energization of the code-following relay and this may be achieved by the means shown in Fig. 4, where a condenser C<2> is charged during the dropped state of the code-following relay CF<2>, and discharges through a holding winding HW when a front contact 8 is closed. For different length track sections or for different ballast conditions it is necessary to provide different peak voltages. This may be obtained by the arrangement shown in Fig. 7, in which the code transmitter CT<1> has associated therewith a relay P having a slug winding 25 witii an adjustable resistance AR to delay the opening of the contact 26 in the feed circuit of the transformer 11 until a sufficiently high flux has been set up. This arrangement maintains a constant peak voltage in spite of any decay in battery voltage since with reduced battery voltage the relay P will be slower in lifting its contact ; the longer time of feed to the winding 11 then permits the lower battery voltage to produce a normal value of current in the transformer winding 11. Different coding rates may be automatically selected according to the ahead traffic conditions and the decoding means then applies the appropriate code to the rear section.