baber/WOPTO huggingface dataset:
Patent GB-476459-A (GB)
Title: Improvements in and relating to wheels for vehicles
IPC: B60B15/18
Filed: 1936-10-31
Abstract: 476,459. Portable-track wheels for vehicles. HENNEUSE, C. A. Oct. 31, 1936, No. 29672. [Class 79 (i)] A vehicle wheel of the kind in which elements adapted to engage the ground are movably mounted on a member supported by its pressure on the upper elements, transmitted through the pressure between adjacent elements to those elements in contact with the ground, is characterized in that inter-engaging means are provided on adjacent elements for maintaining the elements in their proper positions as the supporting member moves over the ground. In the construction shown in Figs. 1, 2 and 4, the supporting member comprises a pair of annular plates 2 secured to a hub 6 mounted on bearings on an axle 8, and driven, if required, through a shaft 9. Wheel elements 14 are freely movable between the plates 2, their outward movement being limited by lugs 15 on the elements engaging flanges 3 on the plates. Rubber treads 16 are bolted to the elements 14, and each element is provided with teeth 31, 32 engaging the corresponding teeth of the adjacent elements. A rubber pad 24 is preferably provided on one face of each element to transmit the pressure from one element to the next. In assembling the wheel the elements are arranged in a.circle and the treads 16 are clasped by a split band, the ends of which are drawn together to compress the rubber pads 24 and allow the lugs 15. to come within the circumference of the flanges 3. In the construction shown in Fig. 5, each element 34 is provided with gear teeth 38, and with a hook 39 passed through a slot 41 in the adjacent element. Pressure between the elements is between curved metal surfaces 36, 37.
Patent GB-744342-A (GB)
Title: Improvements relating to egg graders
Inventor: COPE WILLIAM JAMES
IPC: B07C5/22
Filed: 1953-10-27
Abstract: 744,342. Weighing apparatus. COPE, WHELON & CO., Ltd. Oct. 20, 1954 [Oct. 27, 1953], No. 29682/53. Class 143 An egg grader comprises an adjustably sloping runway having interposed tiltable weighing pans. A sloping channel 2, Figs. 1, 2, is adjustable in its slope by screw 28, and is apertured at 3, Fig. 1, to receive weighing pans 4 counterbalanced by adjustable threaded weights 19, Fig. 4. The eggs drop into channels 22, Fig. 1, at right angles to the runway, the channels being defined by plastic covered springs 24. A spirit level 30 may be mounted on the apparatus to enable the runway to be set to a pre-determined slope. Specification 740,426 is referred to.
Patent GB-421756-A (GB)
Title: Improvements in means for securing sheets of material for building and and other purposes
IPC: E04D3/36
Filed: 1933-10-26
Abstract: 421,756. Lock washers. BROWN, C. W., Uralite House, and PANGBOURNE, S. F., Bound Rede, Villa Road, both in Higham, Kent. Oct. 26, 1933, No. 29775. [Class 89 (i)] A washer designed for use with bolts securing sheets of corrugated material in situ has a curved base 3 to fit the ridge of the corrugation and a flanged hollow boss 6 on which fits the nut 9 with its shank 8 projecting through the washer. The hook bolt 2 is screwed into the blind hole in the shank and its end is thus protected from the weather.
Patent GB-1473351-A (GB)
Title: Fluid flow control valves
IPC: F16K15/00
Filed: 1975-07-02
Abstract: 1473351 Valves A F WIGLEY 2 July 1975 [5 July 1974] 29811/74 Heading F2V To ensure that a non-return valve functions even when a foreign body is lodged in the valve two separate closure members are provided, acting in series. The first closure member 34, which has a seat 26 on an acetal or metal guide member 22, is formed of a rigid plastics material or metal. The second closure member 36 is of a deformable material and seats on the inner wall of the valve body, which may be of plastics or metal. In an embodiment, Fig. 16 (not shown), two valves of the invention are incorporated in a combined anti-vacuum and non-return valve and in further embodiments, Figs. 17, 18 (not shown), a stop valve is also incorporated.
Patent GB-972197-A (GB)
Title: Circuit arrangements for the generation of voltages including components of parabolic waveform from cyclic voltages of sawtooth waveform
IPC: H04N3/22
Filed: 1961-08-18
Abstract: 972,197. Electric analogue calculating. FERNSEH G.m.b.H. Aug.18, 1961 [Aug. 18, 1960; Jan. 20,1961], No. 29865/61. Heading G4G. [Also in Divisions H3 and H4] A parabolic waveform is derived from a sawtooth waveform by feeding the sawtooth waveform to a pair of semi-conductor devices having square law characteristics inverting the output of one of the devices and combining the resulting waveforms. In Fig. 1 transistor T2 conducts during the negative part of the sawtooth voltage Ust so that a half-parabola is provided across the common load R1. Transistor T1 becomes conductive when the input voltage exceeds zero, completing the parabolic output. Variable resistor R3 is adjusted so that the gain of the common emitter transistor T2 is the same as that of the common base transistor T1. The input/output characteristics may be adjusted by variation of the supply voltage U B . In a correction system for television camera tubes (see Division H3), a function x = a+ bt+ ct<SP>2</SP> is derived by part of the circuit shown in Fig. 4. A sawtooth waveform is generated by charging capacitor C1 and discharging it through the switching transistor Q1, rendered conductive by the horizontal synchronizing pulses H. The sawtooth voltage is passed by two emitter followers Q2, Q3 to a pair of diodes D1, D2. Diode D2 conducts during the positive part of the sawtooth, developing a half-parabola component across resistor RA. The other half of the parabola is provided by diode D1 during the negative part of the sawtooth and is inverted by transistor Q4. The two half-parabolas are combined at the base of transistor Q5. The phase of the parabola relative to the sawtooth is adjustable by variation of resistor F2. This controls the bias on transistor Q3 and hence the times at which diodes D1, D2 became conductive. Extreme adjustment of resistor F2 can provide a positive or negative sawtooth instead of a parabola. Resistor F5 controls the a term of the function. The bt term is provided by adding part of the sawtooth from potentiometer F4 to the parabolic component at the emitter of transistor Q5. The output of Q5 is adjustable by potentiometer F3 and is amplified by transistor Q5a.
Patent GB-245909-A (GB)
Title: Improvements in draught excluding means for side screens or the like as employed on vehicles
IPC: B60J10/02
Filed: 1924-12-12
Abstract: 245,909. Riley, A. Dec. 12, 1924. Draught excluders. - Side screens of motor vehicles, particularly those adapted to open inwardly and outwardly, are adapted to engage at their edges with a resilient draught-excluding strip 4, consisting of rubber, canvas or similar tubing, compressed in a groove in the fixed rail. The tube may be filled with resilient material such as spongy rubber and preferably consists of leather such as is used in the upholstery. The device may be composed of a wooden strip to which is secured material to form a space filled with resilient material, the. strip being secured in a rabbet by means of a bead. The walls of the tube and groove may be perforated to lead away water and the bottom of the groove may have a drainage channel. Specification 21323/04 is referred to.
Patent GB-1357653-A (GB)
Title: De-palletisers
IPC: B65G59/02
Filed: 1971-06-25
Abstract: 1357653 Apparatus for removing layers of articles from a pallet BRITISH MATHEWS Ltd 25 Sept 1972 [25 June 1971] 29899/71 Heading B8C In a de-palletizer for removing layers of articles from a pallet, a loaded pallet 8, carrying a load of crates 12, is deposited on an infeed conveyer 2, Fig. 2, which carries the pallet 8 into a lift shaft 4 when a chain-operated pallet support frame 20 is in its lowermost position and the loaded pallet 8 is raised by the support frame 20 until the top layer of crates is located between opposed pairs of gripping members 30, 30 and 40, 42 of a gripping mechanism 10, as sensed by a photo-cell, not shown, whereupon the gripping members are moved into engagement with the outermost crates of the top layer and the support frame 20 is then indexed downwards a short distance. The latter distance is sufficient to allow one of the flexible platforms 66, 68 of a moving apron mechanism 14, Fig. 5, to be moved into the gap between the top layer of crates, gripped by the mechanism 10, and the layer next beneath it. After one of the platforms 66, or 68, has been moved from the vertical run 58 to the horizontal run 62 into the said gap the gripping members 30, 30 and 40, 42 are moved apart so that the top layer of crates is deposited upon the platform 66, or 68. The gripping member 42, which is pivotally mounted, is rotated upwards, and the apron mechanism 14 is rotated so that the platform 66, or 68, moves the top layer of crates, over a fast-revolving roller 82 and on to a conveyer 80 of a discharge mechanism 16, Fig. 4, after the previous layer of crates has been cleared from the conveyer 84. The cycle is repeated, until each layer of crates has been removed from the pallet 8 the support frame 20 then being lowered to the bottom of the lift shaft 4 to deposit the empty pallet 8 on a pallet discharge conveyer 18. Another loaded pallet can then be moved into the lift shaft 4. The support frame 22 is carried by two pairs 24, 26 of vertical, continuous, chains arranged at opposite sides of the lift shaft 4 and driven by an electric motor acting through gearing, not shown, the apron mechanism including a pair of parallel chains 52, 54 each having a run 56 beneath the infeed and pallet discharge conveyers 2, 18. The platforms 66, 68, formed of closely-spaced, metal slats, are located on the chains 52, 54 so that, when one extends along one chain run 58, the other extends along the other chain run 60 to enable the loaded pallet to be raised in the shaft between the platforms 66, 68. A photo-cell, not shown, located just below the upper chain runs 62, senses when an article, from the layer held by the gripping mechanism 10 has dropped on to the layer below and stops the movement of the apron mechanism 14. The conveyer 84 includes an article-turning post 90. In a modification, Figs. 6, 7, not shown, two separate load layer discharge mechanisms are arranged on opposite sides of the lift shaft, the fixed gripper 40 being replaced by a pivoted gripper (42).
Patent GB-857210-A (GB)
Title: Improvements in or relating to electric lighting fittings
Inventor: ROWLANDS EDWARD
IPC: F21V11/02
Filed: 1958-09-18
Abstract: 857,210. Overhead lighting fittings; louvres. GENERAL ELECTRIC CO. Ltd. Sept. 15, 1959 [Sept. 18, 1958], No. 29977/58. Classes 75(2) and 75(4). In an electric light fitting for overhead mounting which has light reflecting louvres extending vertically below the light source, at least one of the reflecting surfaces is formed with plane primary facets with their outer edges extending horizontally, which face downwards and which are inclined to the vertical at angles which decrease progressively from the top to the bottom of the system, and with plane secondary facets substantially perpendicular to the corresponding primary facets. The reflecting louvres 10 may be mounted in an inverted trough shaped housing 1 having reflecting plates bolted to the inner surfaces at the lower end of the trough, these plates ending in lips 6 which abut against the ceiling when the fitting is recessed thereinto. A V-shaped reflector 7 is secured by straps 4 to the housing 1 and supports the faceted reflecting louvres 10 which for this purpose are provided with lugs L, L<SP>1</SP> entering slots in the reflector 7. The housing 1 causes lampholding devices 5, e.g. for fluorescent discharge lamps, the starting and operating gear for which is accommodated in the base of the housing 1. Where the facets are provided on both surfaces of the reflecting louvres, they may be staggered so as to avoid the creation of thin places.
Patent GB-230147-A (GB)
Title: Improvements in or relating to briquette presses
IPC: B30B11/04
Filed: 1923-11-28
Abstract: 230,147. Gram, T., and Peco, Ltd. Nov. 28, 1923. Stationary-mould machines ; pressure-producing mechanism ; strain, preventing.-A briquetting press with continuously connected toggle mechanism forming an unbroken chain of levers is provided with continuously connected and positively operated linkage for moving the toggle mechanism and stamps in relation to the mould, the transversely moving lever of the toggle and the said linkage being operated by pin elements on the same crank shaft. The briquetting mould a is open at its upper and lower ends a<1>, a<2> and positioned at each end thereof are stamps b, c while above the mould are hoppers d<1>, d<2> feeding into charging openings d<3>, d<4> in a slide d reciprocated by cam gear. The stamp c is connected directly to a crosshead c<1> adapted to slide in guides f<2>, f<3> while the stamp b is connected to a cross-beam b<1>, which is operated by a crosshead b<3> moving in guides f, f<1>, through a second crossbeam b<4> and tension members. Two toggle links c<3>, b<7> are connected to the pins c<2>, b<6> of the crossheads c<1>, b' and at their adjacent ends to pins c<4>, b<8> in the link end of a toggle lever g which is actuated by a crank pin e<1> on the driving-shaft e. To move the stamps and toggle mechanism relatively to the mould a bell-crank lever g<2>, g<4> mounted on a fixed pivot g<1> is provided, the arms of the said lever being connected by rods g<3>, g' to the crank pin e<1> and a pivot c<5> on the toggle link c<3>, the said mechanism operating the stamps b, c so that the top stamp b charges the mould a from the slide d, the stamps then moving together to form the briquette, after which operation the stamp c moves downwards and is followed by the stamp b which pushes the briquette out of the mould, the stamps then rising to free the slide d and re-commence the operation. The fixed pin g<1> of the bell-crank lever g<2>, g<4> may alternatively be placed outside the centre-line of the press and the connecting link from the short arm attached to the lower crosshead. A strain preventing device is provided comprising compression springs h on tension members h<2> provided with trunnions h<5> engaging slots c' in levers c<6> attached to the upper crosshead pin the central portion c<2> of which is eccentric to the bearing portion c<8>. The material may be subjected to a pre-compression by discharging it from a single hopper and laterally compressing it in a mould extension, the semibriquette then being pushed into the mould proper by the top stamp b.
Patent GB-173125-A (GB)
Title: Improvements in and relating to means for protecting alternating electric current apparatus
IPC: H02H3/26
Filed: 1920-10-23
Abstract: 173,125. Pearce, H. Oct. 23, 1920. Protective arrangements for internal faults in alternating-current apparatus comprise a relay operated by a disturbance of balance between induced currents, in supplementary windings, arising from the disturbance of the distribution of the magnetic flux in the apparatus when the fault conditions develop. As shown in Fig. 1, applied to a single-phase transformer 2, small supplementary coils 4, ' are wound symmetrically with relation to the primary winding 1 and areconnected through the protective relay 6 so as to oppose one another. If, on fault, some of the turns of the winding 1 become short-circuited, the resulting disturbance of the symmetry of the magnetic flux in the coil disturbs the balance between the windings 4, 5 and the relay operates. The arrangement operates in the same way if a fault develops in the secondary winding of the transformer. In the case of a ring-type twophase transformer, two sets of diametrically disposed and opposing supplementary coils are employed, each set being connected through a relay. The arrangement is applicable also to the stators of generators, and the supplementary coils may be grouped in slots spaced the polar pitch apart as shown in Fig. 4. An arrangement comprising a step-up transformer, transmission line, and step-down transformer may be protected as a whole by a supplementary coil on the step-up transformer balanced, through pilot-wires and relays, against a similar coil on the step-down transformer.
Patent GB-733918-A (GB)
Title: Improvements in blades of elastic fluid turbines and dynamic compressors
Inventor: CARTER ALFRED DENIS SNOWDON
IPC: F01D5/20
Filed: 1951-12-21
Abstract: 733,918. Turbine and compressor blades. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Dec. 10, 1952 [Dec. 21, 1951], No. 30051/51. Class 110 (3). In an elastic-fluid turbine or dynamic compressor having a blade 4 mounted therein so that the tip portion is free to vibrate in any transverse direction  and in which a shroud la surrounds the blade with small clearance, the tip of the blade is enlarged either by means of an integral enlargement 4a or by means of a small plate fixed to the tip surface whereby the aerodynamic damping of vibration of the blade by means of the fluid in the clearance between the blade and the shroud is increased. The clearance at the blade tip is exceedingly small with consequent risk of rubbing and the shrouding 1a surrounding the blade tip is made of material much softer than the blade, e.g. white metal, wood or a synthetic resinous plastic material, so that it will easily wear away under the rubbing action. The invention is applicable to both rotor and stator blades and the blades may be either rigidly or resiliently mounted.
Patent GB-996169-A (GB)
Title: Improvements in load supporting props
Inventor: COWLISHAW FRANK
IPC: E21D15/54
Filed: 1960-09-01
Abstract: 996,169. Hydraulic pit props. W. E. & F. DOBSON Ltd. Sept. 1, 1961 [Sept. 1, 1960], No. 30100/60. Heading E1E. An hydraulic pit prop is held vertically in its seating 2b by an inflatable endless or non- endless, see Fig. 3 (not shown), rubber tube 5 which is clamped between bearing plates 4, 6 and is provided with a non-return valve 8. Specification 785,470 is referred to.
Patent GB-253803-A (GB)
Title: Improvements in means for indicating the level or temperature and level of the waterin radiators of motor vehicles
IPC: F01P11/14
Filed: 1925-11-30
Abstract: 253,803. Cope, J. C. Nov. 30, 1925. No Patent granted (Sealing fee not paid). Indicators actuated by floats. - The water level in the radiator of a motor vehicle is indicated by a red disc 6 carried by a rod 2 to which a float 1 is adjustably secured by lock - nuts located above and below the float. The rod passes through a guide passage in the indicator casing 3 which is combined with the stopper of the radiator. A thermometer 10 may be combined with the water level indicator.
Patent GB-660255-A (GB)
Title: Improvements in sludge pumping apparatus
IPC: F04F3/00
Filed: 1947-11-12
Abstract: 660,255. Vacuum apparatus for raising sludge. TOLLEFSEN, G. R. Nov. 12, 1947 [Aug. 30, 1946], No. 30169/47. Class 102 (ii). In apparatus for removing sludge from oil tanks, a pipe 4 has a nozzle 24 provided with air intakes 25 and is connected to a receptacle 2 that is maintained under vacuum by a pump 8 and in which the sludge is removed by a pump 6. The inlet 10 of the pump 6 is connected to a space within the receptacle confined by a baffle 11 and a perforated plate 12. The vacuum in the receptacle 2 is controlled by an outwardly opening valve 21 actuated by a float 14 to admit atmosphere.
Patent GB-303962-A (GB)
Title: Improvements in or relating to openwork steel flooring, steps or gratings
IPC: E04C2/42
Filed: 1927-11-10
Abstract: 303,962. Gill, H. Nov. 10, 1927. Gratings.-Gratings for flooring, steps, and like purposes are formed of parallel bars 1 with slots 2 inclined in opposite directions in adjacent bars, and transverse bars 3 which are forced into the slots without any deformation of those portions engaged by the slots; the upper edges of the bars 1 and 3 are flush. The grid may be surrounded by a frame welded to the bars.
Patent GB-1146652-A (GB)
Title: Improvements in low pressure hoses
IPC: F16L21/025
Filed: 1966-07-06
Abstract: 1,146,652. Hoses; hose couplings. DUNLOP CO. Ltd. 6 July, 1966 [16 July, 1965], No. 30233/66. Addition to 1,036,459. Headings F2G and F2P. A flexible hose of, e.g., polypropylene, a polyamide or polyvinyl chloride and formed with convolutions of triangular cross-section, has at the end thereof a frusto-conical portion 6 whereby an 0-ring 1 on a pipe 2 may be rolled into a groove 8 when the pipe is advanced into the hose; the 0-ring is repositioned alongside the flange by pulling the pipe outwards. The groove or grooves may be tapered inwardly towards the end of the hose.
Patent GB-732217-A (GB)
Title: Microtome
IPC: G01N1/06
Filed: 1953-11-02
Abstract: 732,217. Microtomes. LKB-PRODUKTER FABRIKSAKTIEBOLAG. Nov. 2, 1953 [Nov. 6, 1952], No. 30238/53. Class 97 (1). In a rotary microtome having an adjustable stationary knife 38, the knife is secured so that its edge is bent in a curve and the surface of the object 2 which describes a circular path passes the knife in a tangent plane to the curve. Preferably, object-holder 4 is moved forward by heating coil 14. A section 20 of heat-insulating material, e.g. " Plexiglass " (Registered Trade Mark) prevents the bearing disc 22 from becoming heated and jamming the slide bearing 32. Advantageously a groove is provided in the disc 22 so that it can be driven by a cone belt 34. Members 26, 28. secure the disc 24 against which the feeding bar expands, and the sliced sections which may be as thin as 70 A.U. are collected in a container 44. The knife 38 is mounted so that it can be fixed at any inclination about the vertical and a horizontal axis and it can be moved towards and away from the object by screw 60.