baber/WOPTO huggingface dataset:
Patent GB-1458833-A (GB)
Title: Bolt pretensioning device
IPC: F16B33/04
Filed: 1973-12-20
Abstract: 1458833 Tensioning bolts J PIROSKA and E RUMMELHOFF 20 Dec 1973 [27 Dec 1972] 59139/73 Heading F2H A screw bolt 2 which extends from and cooperates with a base surface is tensioned by means of a device comprising a cylinder 4 slidably surrounding and receiving a threaded piston 3 interposed between the surface and a nut 5. The bolt is subjected to tensile strain when fluid under pressure is supplied to an inlet 18 so as to move the piston 3 upwardly and hence elongate the bolt 2. The nut 5 initially abuts the cylinder 4, as shown, there being a gap c between the piston 3 and the nut 5 since the cylinder 4 is longer than the piston 3. The nut 5 moves relative to the cylinder as the bolt stretches but the elongation is less than the distance c. In this tensioned state the nut 5 is turned until it once again loosely abuts the cylinder 4, the source of pressure then being removed. Sealing edges, which as described accommodate "O"-rings 15, 15<SP>1</SP>, are situated substantially midway along the piston and cylinder and are disposed in respective planes that are substantially a common plane and are substantially perpendicular to the bolt axis and co-operate with a corresponding cylindrical surface of the piston and the cylinder. The radially outermost surface of the piston 3 and the radially innermost surface of the cylinder 4 comprise frusto-conical and right cylindrical portions as shown and, as described, together with convex abutting surfaces of the nut 5 and cylinder 4, enable the device to tolerate a degree of angular deviation or misalignment. The cylinder 4 may be angularly keyed to the piston 3 by a pin 16 which engages in an axial groove 17.
Patent GB-1300737-A (GB)
Title: Apparatus for use in a terrain model
Inventor: WILTON RAYMOND CHARLES
IPC: G09B25/06
Filed: 1968-12-12
Abstract: 1300737 Flight simulators LINK-MILES Ltd 10 March 1970 [12 Dec 1968] 59219/68 Heading B7W [Also in Divisions F3 and G5] The hills and general contours of a terrain model are produced by deforming a sheet 12 by actuation of deforming devices 22 located  thereunder, the devices being fluid operated  and provided with domed heads 25 which are  attached to the sheet. The sheet includes a  model of a normally vertical structure such as a  house 28 with a lower portion 38 of foam rubber and a roof 36 provided with a weight 40 which will cause the building to remain essentially vertical when the sheet is deformed. Vehicle models may be provided which are moved by a magnet arranged on a moving track provided beneath the sheet 12. The actuators may be controlled by electrically operated valves which may be operated by an automatic programming device using punched cards to produce any desired terrain contour. The sheet 12 may be attached to the frame 14 by springs or elastic cord and jacks, the latter being used to provide a further variation of the terrain. The model may be used for gunnery or flying training by televising or filming the terrain. Optical ranging and sighting devices may be used directly on the model or a television camera 16 may follow the simulated flight path of an aircraft trainer so that the trainee sees a scene as through a cockpit window. Reference is made to U.S.A. Specifications 2,999,322 and 3,281,529 (re changing the simulated position of an observer), 3,188,911 (re preparation of ground maps) and 2,959,779 (re use of television cameras).
Patent GB-1338000-A (GB)
Title: Replaceable tooth holder assembly
IPC: E02F9/28
Filed: 1970-12-14
Abstract: 1338000 Excavator teeth assemblies FLORIDA MACHINE & FOUNDRY CO 14 Dec 1970 [29 April 1970] 59394/70 Heading E1F The ends 26 of a key for locking an excavator tooth 11 about a nose 12 of a support 10 when the key is fully entered into a key slot extending through the tooth and nose and biassed against the tooth by a resilient member 21 housed in the nose are formed with shoulders 31, which engage limit surfaces 16 on the tooth adjacent the keyway to oppose axial movement of the key. U.S.A. Specifications 1,205,969, 2,427,651, 2,483,032, 2,846,790, 2,870,667, 2,919,506, 2,982,035, 2,984,028, 3,012,346, 3,026,947, 3,079,710, 3,117,386 and 3,126,654 are referred to.
Patent GB-1317670-A (GB)
Title: Flame resistant hydraulic fluid
IPC: C09K3/00
Filed: 1971-12-23
Abstract: 1317670 Hydraulic fluids MOBIL OIL CORP 23 Dec 1971 [28 Dec 1970] 59986/71 Heading C5F Flame resistant hydraulic fluids comprise a major proportion of a synthetic hydrocarbon liquid containing at least 30C/molecule and minor amounts of a chlorinated polyphenyl and a tri-hydrocarbon phosphate (e.g. tricresyl or tributyl-phosphate). Phenolic antioxidants (e.g. 4,4<SP>1</SP> - methylenebis {2,6 - ditert - butylphenol}) may be present.
Patent GB-621298-A (GB)
Abstract: 621,298. Protractors. MOORE & WRIGHT (SHEFFIELD), Ltd., and GODDARD, W. Feb. 14, 1947, No. 4375. [Class 97 (iii)] In protractors of the kind comprising a rotatable disc carrying a tangentially-disposed blade, angularly movable with respect to a fixed arm carried tangentially on a stationary disc over which the movable disc rotates, the rotatable disc is connected to one of a plurality of coaxially arranged adjacent drums for operation thereby, two of the drums being revolvable relatively to each other and to a third stationary drum by sun and planet gearing, and the graduations, which may be of the " Braille kind, are marked on the peripheries of the drums. The stationary disc 10, Fig. 1, having a fixed arm 11 longitudinally grooved at 12 for swivelling therethrough of the movable angle-forming blade 13, carries a spindle 14 on which are mounted the rotatable disc 15 and three adjacent co-axial drums 16, 17, 18, of equal diameter, the intermediate drum 17 being stationary and the two outer drums revolvable. The drum 16 is supported on a bearing 20 and is screwed to the disc 15 so as to rotate therewith. The drum 18 is keyed to a sleeve 21 rotatably disposed on the spindle 14 and the drum 17 is freely mounted on the sleeve 21, but held against rotation by a bracket 21a. The drums 17, 16 are provided with internal toothed rings 22, 23 constituting adjacent fixed and revolvable sun-wheels engaged by separate pinions 24 and 25, which are mounted on a stub shaft 26 carried in a mounting 27 clamped to the rotatable sleeve 21, the gearing being such that the drum 16 and hence the disc 15 and, the blade 13 are moved through nine degrees by a complete revolution of the drum 18. The stub shaft 26 is mounted in a spring- loaded bearing, whereby the shaft is continually urged. radially outwards to maintain the planet pinions 24, 25 in engagement with their respective drums, thus eliminating back-lash. As shown, the graduations employed are such that they are perceptible to " feel by a blind person and comprise projecting lugs 30, 31 and a datum line formed by a straight rib 35-32- 35. The graduations are further marked by means of Braille numerals 33, 34. The drums may be clamped in any desired position by a spring-washer 36 and milled nut 37.
Patent GB-696532-A (GB)
Abstract: 696,532. Measuring instruments. TICKNER, A. (Lewis Engineering Co.). Dec. 24, 1951, No. 30143/51. Class 37. In a moving coil instrument of the long-scale type in which the coil embraces an annular pole-piece, the latter is provided with a gap to enable the moving system to be removed without disturbing the magnetic circuit. In a single-coil instrument, Fig. 9 (not shown), the pole-piece is formed by two parts assembled to provide a gap which, as shown in Fig. 10, is helical to minimize its effect on the uniformity of the flux in the path of the coil. The annular pole-piece 55, Figs. 1, 3, 6, for the deflecting coil 61 of a ratiometer type instrument is similarly formed in two parts extending from barmagnets 54 and has a gap 60. The restoring coil 53 co-operates with a crescent-shaped core 52, Fig. 4, and pole-pieces 44 extending from a bar magnet 43 and arranged on opposite sides of the core, the whole magnetic system being supported by a non-magnetic bar 37. The dial 33 is supported by a non-magnetic bracket 30 secured to the pole-piece 29 which surrounds the annular pole-piece. When it is desired to remove the moving system, the dial and the front bearing 34 are removed together and the spindle can then be removed by passing both coils through the gap 60.
Patent GB-723586-A (GB)
Abstract: 723,586. Ordnance mountings. BREVETS AERO-MECANIQUES SOC. ANON. July 16, 1952 [July 30, 1951], No. 18020/52. Classes 92(1) and 92(2). Relates to guns having a movable sighting device with an optical axis fixed with respect thereto, and a servomechanism interconnecting the movable sighting device, the gun, and the gun stand in such a manner that, when the gun layer tends to track a target, an angular interconnection complying with a predetermined law is maintained between the optical axis and the line of fire in response to displacements imparted by the layer to the sighting device. According to the invention, means are provided to enable the layer to choose at will between a limited number and preferably two different laws of interrelation between the displacements of the optical axis of the sighting device and the line of fire. In Fig. 1 the gun 2, gunner's seat 67, and sighting device 5 are carried by a frame 3 so that they move with the frame around a stand 1 when following a target in azimuth. With the target moving as shown in Fig. 2 the sight is moved in a clockwise direction and serves, by a toothed quadrant, to move a sleeve 24 to the right, to enable fluid from a source 27 to drive a training motor 30. This motor not only drives gears 17, 18, to move the frame 3 around the stand 1 but also the sun-wheel 35 of a differential gear. The planet gear of the differential, by means of a screw 37, serves to move the piston 26 of the sleeve 24 in a direction opposite to that in which the sleeve has moved, and also to traverse the carriage 41 of a variable speed device over the surface of a disc 42 driven at a constant speed. The balls of the device drive a cylinder 39 geared to the other sun wheel of the differential. When the device is correctly tracking a moving target the two sun wheels are rotating at the same speed and the sight, which has to be readjusted after its initial movement, is at the correct angle with respect to the line of fire. A switch 47 carried by one of the sight control handles 21 may be closed to energize an electromagnet 46 when the sight is swung through a large angle to pick up a target, the action of the magnet being to withdraw a gear 33 from the chain of gears between the motor 30 and differential gear. When the switch is closed the gun follows the movement of the sight without any lead angle, for in this case the piston 26 will remain in, or return to, its neutral position.
Patent GB-2000396-A (GB)
Title: Frequency changer circuit for synchronous machines
IPC: H02P25/024
Filed: 1978-06-12
Abstract: A frequency changer circuit 10 for supplying one or more synchronous electrical machines, as shown groups 1 to 4 of hysteresis motors driving high speed centrifuges, is provided with power storage members 14, 15, 16 and a frequency control element 17 for controlling the frequency of the inverter 12. The motors are connected to the inverter via switches 5-8. It is necessary to protect the motors from overloading, when one or more of the groups is switched on or off. To this end means 21, 22 are provided for sensing when the inverter voltage rises above a predetermined response level and a member 23 supplies a transient signal Figure 3 (not shown) to the frequency control element 17 when this level is exceeded to cause the motors to be briefly changed over from synchronous to asynchronous operation, thus increasing the power requirement of the motors. The member 23 causes the inverter frequency to increase suddenly by a preset amount, so that the power surplus in members 14, 15, 16 is absorbed by the motors to reduce the transient overvoltage produced by switching the motor group(s). Further reduction is possible by decreasing the voltage of rectifier 13 through members 19, 28 also controlled by member 22. <IMAGE>
Patent GB-2021020-A (GB)
Title: A parting device for slabs
IPC: B21B1/08
Filed: 1978-07-03
Abstract: A tool for forming parting grooves in a flat, plastically deformable workpiece, e.g. a continuously cast steel slab, in a manner which seals the internal porosity of the slab in the regions which become exposed upon division, has a working portion in the form of a ridge, which is defined by an elongate ridge or preferably by a circumferential flange on a roll; the cross- sectional shape of the ridge or flange has a flat or convex tip between two straight or gently convex side faces, the angle at which the side faces are mutually inclined being 20 DEG  to 60 DEG , the width of the tip being a given proportion of the thickness of the workpiece, and the width of the tip being specifically related to the said angle of inclination of the side faces. The height of the side faces, and their curvature and that of the tip, are also preferably within set limits. <IMAGE>
Patent GB-2004680-A (GB)
Title: Tape system
IPC: G09B19/06
Filed: 1978-09-19
Abstract: A recording magnetic tape is disclosed having a sound track and a portion in which pictorial data is placed for viewing. The sound track and the pictorial data may be on the same or opposite sides of the tape. The sound track is displaced from the corresponding pictorial data by a predetermined interval to allow for synchronization, at least once, of the sound track and the data during play back. The tapes so arranged are employed in either open reel or cassette recording systems. In the case of open reel recording an optical system is provided to facilitate display of the data. In the case of cassettes the pictorial data may be displayed at either front or rear sides of the cassette. Various recorders for using the cassettes are disclosed such that sound reproduction and pictorial display can be accomplished. <IMAGE>
Patent GB-2058680-A (GB)
Title: Seating assembly for motor vehicles
IPC: B60N2/24
Filed: 1978-10-09
Abstract: A motor vehicle body has a personnel carrying compartment having a pair of longitudinally disposed seat assemblies. The seat assemblies each include a seat back 19 and a seat base 15a and each assembly is mounted so as to be pivotable about an axis 16 parallel to the longitudinal axis of the vehicle body. The seat assemblies can be positioned such that the seat backs are juxtaposed adjacent the longitudinal axis of the vehicle body or pivoted to a second position in which the seat backs are adjacent the sides of the vehicle body with the seat bases facing one another. <IMAGE>
Patent GB-2042499-A (GB)
Title: Stabilised dead-burned dolomite
IPC: C04B35/06
Filed: 1979-02-23
Abstract: A refractory material is obtained by pelletising and-dead-burning dolomite and optionally magnesium oxide, or a precursor therefor, in the presence of a stabilising agent which is an oxide or precursor therefor which reacts in the dead-burning with the calcium oxide of the calcined dolomite to produce a product less susceptible to reaction with water. Suitable oxides are chromium oxide, zirconia or silica, or a magnesium silicate such as talc, serpentine or olivine. Where the reaction produces dicalcium silicate the mixture should include an inhibitor for the inversion of beta to gamma dicalcium silicate e.g. a chromate, phosphate, manganate or borate.
Patent GB-2020593-A (GB)
Title: Improvements relating to toothed plate connectors
IPC: B21G3/28
Filed: 1979-05-09
Abstract: In a method of and apparatus for manufacturing toothed plate connectors the operation of feeding the blank sheet material and/or the operation of actuating the punch members to crack out teeth 62 from the blank plate is varied so that a connector is formed having a graded distribution of teeth thereover. <IMAGE>
Patent GB-2027042-A (GB)
Title: Improvements in or Relating to a Thermosetting Plastics Material
IPC: C08F2/44
Filed: 1979-07-27
Abstract: In preparing a fibre and/or filler reinforced thermosetting plastics material utilizing an unsaturated synthetic resin and/or monomer together with (i) a catalyst and (ii) an accelerator, component (i) or (ii) is pre-mixed with the fibre and/or filler and the other component of (i) and (ii) is mixed with the polymer and/or monomer, prior to the final combination of the polymer and/or monomer with the reinforcement. The catalyst or accelerator may be dissolved, emulsified, dispersed or chemically bonded in a finish which is then applied to the fibres or filler.
Patent GB-2047184-A (GB)
Title: Rear view mirror assembly
IPC: B60R1/064
Filed: 1979-09-12
Abstract: A rear-view mirror assembly comprises a mirror (12) on a side arm (32) which is adjustably mounted on a bush (18) for mounting so as to extend horizontally through a vehicle body part. The tilt of the mirror is adjusted about a pivot axis substantially parallel to the general upright axis (100) of the mirror by rotating knob 72 and a shaft (68) so as to change the axial position of a nut (64) on a screw-threaded end (70) of the shaft. A linking element (52) on a sleeve (50) rotatably mounted in the bush (18) is pivotally connected to a fork (56) of the arm (32), so that changes of the nut position (64) cause the arm and mirror to pivot about the nut (64). The mirror tilt angle about the axis of the bush (18) can also be adjusted by means of an epicyclic gear (76) providing speed reduction between a further rotatable knob (74) and the sleeve (50). <IMAGE>
Patent GB-2033199-A (GB)
Title: Root Crop Lifting Wheels
IPC: A01D27/04
Filed: 1979-10-12
Abstract: A crop lifting assembly for a sugar beet harvester comprises a pair of beet lifting wheels mounted for rotation in attitudes so as to define a downwardly and rearwardly converging nip between the wheels. Each wheel has nine spokes 234 and the inwardly facing surface 240 of each spoke is formed with a radially outwardly tapering rib 238 which promotes improved root lifting action by the assembly. <IMAGE>
Patent GB-2036338-A (GB)
Title: Device for automatic addition of a corrosion inhibitor to a coolant system
IPC: F28F19/00
Filed: 1979-11-14
Abstract: A device for the automatic addition of corrosion inhibitor into an automobile coolant system when the coolant mixture is diluted by water having an undesirable level of corrosiveness. The device is in the form of a hydrometer having a hollow stem adapted to receive a quantity of a corrosion inhibitor and having openings in the stem wall allowing contact of the liquid in the coolant system with the corrosion inhibitor when the specific gravity of the coolant liquid decreases below a predetermined level.
Patent GB-2043313-A (GB)
Title: Multiplex information handling system
IPC: H04J3/06
Filed: 1980-01-29
Abstract: A multiplex information handling system for a vehicle has a number of transmitters (Figure 1) and receivers (Figure 2) all interconnected by a common power bus and signal bus (SB, 50). The transmitters transmit signals along the signal bus representing the operational state of control equipment or equipment controlled by that equipment and the receivers respond to and act on such signals to, for example, authorise the display of information received or the initiation of a control function. System management (5A, 5B, 53 54) and supervision (6C, 65) is provided for such that the transmission of certain signal states is made dependent upon the state of other signals in the system and this dependence can be overriden, for example, for vehicle servicing. Supervision also provides for certain urgent signals to be given priority over other signals.
Patent GB-2044891-A (GB)
Title: Air blast valves
IPC: F16K3/30
Filed: 1980-03-14
Abstract: The valve includes a valve body (10) which is traversed by a primary fluid passage (22, 28), a slide gate (12) for opening and closing the passage, a chamber (30) in the valve body on the downstream side of the gate, and a secondary fluid passage (24) which extends between the primary fluid passage on the upstream side of the gate and the chamber so that in use the balanced fluid pressure forces acting on the gate in the primary fluid passage on the upstream side of the gate and in the chamber on the downstream side of the gate will minimise frictional loads on the gate in operation. <IMAGE>
Patent GB-2072895-A (GB)
Title: A watch-case
IPC: G04B37/00
Filed: 1980-03-27
Abstract: A watch-case comprises two shells 1, 2 having a rounded profile, which are approximately symmetrical with respect to their interface and between which are disposed, on the one hand, a gasket 11 and, on the other hand, a metal frame 4 retaining and concealing the gasket and forming a narrow band which is visible around the case, all in order to give the case a slim and flat appearance. The two shells are held together by screws (not shown) and may be of anodized aluminium, the ring 4 being in a contrasting colour. Tubes 12 for the attachment of a wrist band may be welded to the ring 4. A dial 16 is centred on the movement 18 by a ring 17 integral with the dial. <IMAGE>
Patent GB-2056552-A (GB)
Title: Door closing regulator
IPC: E05F3/22
Filed: 1980-05-02
Abstract: A closing regulator for a two-leaved door, in particular a fire-protection door, each of whose leaves (4, 5) is provided with closing means in the form of spring hinges (2, 3) and with a locking device (11, 13; 12, 14) which electromagnetically locks the associated leaf in the open position when energized, comprises a stop arm (7) which can be swung out from an initial position, in which it is parallel to the wall in which the door is installed, about a wall-fixed vertical rotation axis under spring loading, and following the opening of the door leaf (4) which passes under, into its spread-open limiting position in which its projecting end (8) is located in blocking manner in the swinging path of a stop member (9) positioned on the door leaf (5) which passes over. An electromagnetically operable holding device (15) is arranged to lock the stop arm (7) in the initial position with the power switched on and a switching mechanism (16) is arranged to interrupt the supply of current to the coil of the holding device (15) when the passing-over leaf (5) is released for movement in the closing direction or if the leaf performs a movement in the closing direction. <IMAGE>
Patent GB-2052663-A (GB)
Title: Method and Apparatus for Tensioning a Curtain
IPC: B25B25/00
Filed: 1980-05-13
Abstract: The invention provides a tensioning device for a side curtain wall 10 on a transport vehicle or transport container body comprises holding means 14 arranged to releasably receive and retain a fitting 12 on an edge of the curtain, the holding means being mounted in upper and lower bearings (not shown) for rotation in eccentric fashion about an axis by means of a handle to tension the curtain. <IMAGE>
Patent GB-2080720-A (GB)
Title: A woodworking clamp
IPC: B25B1/12
Filed: 1980-07-26
Abstract: Head and tail stocks are adjustably secured between two lengths of spaced apart slotted angle by pins engaging aligned apertures in the stocks and the angles. The component parts of the clamp are used in conjunction with proprietary brands of slotted angle or specially formed tie-bar. More than one pair of stocks may be employed on the same slotted angle or tie-bar, and the stocks, being reversible on their axis, are capable of exerting pressure towards or away from each other. <IMAGE>