baber/WOPTO huggingface dataset:
Patent GB-253573-A (GB)
Title: Improvements to waggon tipplers
IPC: B65G67/00
Filed: 1925-03-11
Abstract: 253,573. Ellson, B. E. March 11, 1925. Tipping-apparatus. -Relates to tipping- apparatus according to Specification 250,695 in which a jointed cradle, Z, Y, X is hauled by the ropes O so as to grip the wagon against side and top supports W, V and to turn about a succession of pivots such as R, Q or to roll along a continuous path. The arrangement is such that the guide sheave J on the top frame X, Fig. 1, engages the rope O at all positions of the apparatus during tilting, and the positions of the turning centres are such as to avoid excessive pleasures on the side and top of the wagon and to permit of the hopper P being placed close alongside the tippler and well above ground level. The turning centres R, Q, the winch N, and balance weights E may be carried on the hopper and its framework. The top frame X may be extended at L to engage a stop M to hold it clear of the wagon when the tippler is in its normal position. The part L of the top frame may carry a balance weight, and balance weights may be provided on the hoisting rope. In modifications, the number and position of the turning centres and the position of the stop M are varied. As shown in Fig. 4, a prop K2 forms a support for the top frame in place of the stop M. and the hoisting rope passes over an additional guide sheave J2a on an arm 6 extending from the top frame. The forces in the rope O may in some positions of the apparatus produce a turning moment tending to reduce the pressure between the top frame and the wagon.
Patent GB-306716-A (GB)
Title: Improvements in and relating to gasholders
IPC: F17B1/08
Filed: 1928-03-03
Abstract: 306,716. Waterless Gasholder Co., Ltd., and Gadd, A. March 3, 1928. Holders.-Gas holders are provided with sides of flexible material arranged to pass over guide rollers and through a shallow sear which may be of a liquid tending to maintain the gastight qualities of the flexible material. Fig. 1 shows a gas holder in which the piston b is attached to one end of a fiexible sleeve d which passes around a series of heavy rollers e immersed in sealing liquid t at the lower part of the shell a. The rollers are supported in rollers : i and are prevented from rising by rollers h. The other end of the sleeve d is connected to the piston by chains on passing ovear pulleys a at the top of shell a. Steadying pulleys s on the piston d engage the chains m or supports u on the shell a. Fig. 5 shows a modified holder of the water tank type, the lower part of each lift having its cup and rollers removed and being provided with a flexible sleeve d which pases over rollers 5 arranged at the top of the next lift and has its ends connected by chains m passing under rollers 7 carried by the lift curb 9. The dip plates of the lifts project into sealing liquid contained in the bights formed by the sleeves passing around the rollers 5. The side rollers 5 are carried by tubular frames supported by the roller brackets 8 and the middle rollers 5 are carried by extensions from the dip plates. Depending plates 12 on the lifts engage connections 11 between the sleeves and the lifts to limit the rise of each lift. The lifts may be guided by the ordinary guides and by extra guide rollers 13. The sides of the sleeves where the gas pressure is not balanced press against and are supported by the sides of the lifts. Fig. 10 shows a piston provided with a braced superstructure to prevent deformation of the sleeve which passes through an upper seal. The flexible sleeve may be formed from tiers of woven fabric having their edges stitched together by means of a machine running on a vertically adjustable rail inside the holder. The first Provisional Specification states that means may be provided for producing a pressure outside the flexible material to balance the pressure of the gas inside or an exhauster may by-pass some of the gas from the inside of the lift to the space outside it. This space may be put into communication with the delivery main. The valves controlling the gas supply to the outside spaces may be operated by the rollers over which the flexible material passes.
Patent GB-272426-A (GB)
Title: Improvements in fluid pressure brake applying apparatus
IPC: B60T15/08
Filed: 1926-03-09
Abstract: 272,426. Imray, O. Y., (General Railway Signal Co.). March 9, 1926. Fluid-pressure. - In fluid-pressure brakes of the Westinghouse type in which the same brake valve is used both for automatic and manual applications, the engineer's brake handle is not moved from its normal inoperative position on automatic application of the brakes. Rofatably mounted about the valve stem is a handle plate integral with the valve handle 7, Fig. 3. Also rotatably mounted about this stem is an actuator pinion 16 engaging a rack 12 connecting two pistons 10, 11 in cylinders 8, 9, of -the automatic brake-valve actuator. The valve stem carries a latch 19 which, on operation of the automatic brake valve actuator, is disengaged, after a certain amount of idle movement, by a pin 25 on the pinion 16 from a circular cam 26 projecting from the handle plate. Immediately thereafter a lug 24 on the actuator pinion engages a lug 17 on the valve stem and the valve is turned till it reaches the service position and the piston 11 engages a stop 46. During this movement, although the handle 7 is disconnected from the valve, the valve may be moved by turning the handle until a lug on the handle plate engages the lug 17, thus enabling the valve to be moved to the emergency position. Both pistons 10, 11 are subject to main reservoir pressure, the pressure on the larger piston 11 being exhausted to atmosphere by an electric-pneumatic valve on automatic operation, which allows the pressure on the small piston to operate the brake valve. A cut-out cock 41, Fig. 5, is provided to allow the actuator to be rendered inoperative. It is adapted to be turned to cut off the passage 40, leading to the larger cylinder 9, from the passage 44 leading to the electric-pneumatic valve and connect the passage 40 through the strainer 38 to a passage 37 leading to the other cylinder and the space above the brake valve connected to the main reservoir. A seal 42 must be broken and a pin 43, provided with a retaining pin 45, removed before the cock can be turned. The position of the brake valve is shown by an indicator projecting from the valve casing and attached to a shaft 37, Fig. 3, carrying a pinion 36 meshing with the pinion 16. The indicator is designed so as to break if it tends to obstruct the operation of the actuator. Electrical switch mechanism carried on a cover plate 27, comprises a contact 30 adapted to be separated from a stationary contact 28 by a lug 33 on the handle plate when the brake valve handle 7 is moved to the lap or service positions.
Patent GB-1201750-A (GB)
Title: Sandwich structures
Inventor: WARREN CHARLES KENNETH
IPC: E04C2/22
Filed: 1967-09-01
Abstract: 1,201,750. Layered panels. JOHN LAING RESEARCH & DEVELOPMENT Ltd. 1 Sept., 1967, No. 6713/70. Divided out of 1,200,301. Headings B5A and B5N. A sandwich structure comprising a core 1 formed from a mixture of pulverized fuel ash and a resin and outer layers 2 and 3 each of a material different from that of the core may be made by coating the face of a mould with a polyester resin and allowing the resin to partially cure, placing in the mould a facing layer of a material different from that of the core but impregnated with a resin, spreading over the facing layer the core material in the form of pulverized fuel ash, placing a second facing layer on to the core material and curing the structure so formed. In an alternative embodiment, the core material which may contain chalk powder or silica flour may be moulded prior to application of the outer layers.
Patent GB-305843-A (GB)
Title: Improvements relating to sewing machines
IPC: D05B21/00
Filed: 1928-03-03
Abstract: 305,843. Singer Manufacturing Co., Ltd., Corrall, H., and Heggie, J. March 3, 1928. Feed by sides of revolving discs.-A machine for stitching circular articles has a step-by-step rotary feed device comprising a disc 1 spring pressed on to a work plate E, with a shaft 2 journaled in bearings 3 on an arm 4 pivoted at 6 and carrying the feed driving shaft 13 which operates by bevelled gears 11, 12. The disc can be swung clear of the work about the pivot 6, a spring pin 83 engaging holes in an arcuate plate 89 retaining it in either of its extreme positions. The step-by-step feed movements are imparted by the following mechanism. On the shaft 13 is secured a wheel 15 with a peripheral flange 16, and a central boss 17 abutting on the bracket 5 for the pivot 6. Rotatably mounted on the boss is a plate 23 with an arm 32 coupled at 34 to a rod 35 driven by the bell crank lever 37, 43. This lever is coupled by a universal joint 45, 46 to a lever 48, 51, pivoted at 49 and provided with a link 53 to which jogging movements are imparted by an eccentric 60 on the main shaft B through links 59, 57, 55. As the plate 23 receives its step-by-step jogging movements from the shaft B by the above system of levers, it moves a lever 20 by a pin and slot engagement 21, 22, to cause a clutch dog 19 to grip the flange 16 of the wheel 15 and impart a step-by-step rotation to the feed shaft 13. Backward rotation of the wheel 15 is prevented by a dog 25 on a lever 26 engaging a fixed pin 27 protruding through a hole in the plate 23. The work support E, D can also be swung away from the stitching point. The extent of the feed steps may be varied by adjusting the nut 54 along the slot in the link 55, Fig. 4, or by moving the nut 45 along the slot 44 in the arm 43. Fig. 3. Threads controlling otherwise than in stitchforming.-When the lever 65 is pulled down to lift the feed disc 1 against its spring, until the pin 83 clears the notch 84, the arm 4 is swung away from working position by a spring, and as the arm 4 is raised, the shaft 70 is rocked by a link 68 causing thread-tension relieving devices 72, 78 to separate the discs of the looper thread tensions 74, 79. The needle thread 96 is governed by a similar spring-disc tension device, and holes in a plate.
Patent GB-186284-A (GB)
Title: A convertible combination chair, cot and bedstead
IPC: A47C17/18
Filed: 1922-03-08
Abstract: 186,284. Honeywill, E. G. March 8, 1922. Tables convertible into bedsteads and seats; invalid and like tables.-A chair convertible into a bedstead or cot has hinged to each front leg a framework or wing F consisting of a duplicate arm, back leg, and front leg rigidly connected to fold against the arm and legs of the chair. A leg rest C is hinged to the front of the seat B and carries at its other end a frame D. To form a cot, the wings F are swung forward through 180‹ and the leg rest C opened out and supported horizontally. To form a bedstead the adjustable back A is swung back and is held horizontal by hinged legs. A table top may be supported at one side or in front of the chair by swinging forward one or both wings and resting the top thereon; or a large top may be supported over the whole frame when extended. The table top may rest when not in use in two halves on the chair back.
Patent GB-891261-A (GB)
Title: Improvements in or relating to tuning devices
Inventor: PARKYN JOHN MICHAEL
IPC: H03J3/00
Filed: 1960-02-26
Abstract: 891,261. Transformers. MARCONI INSTRUMENTS Ltd. Sept. 29, 1960 [Feb. 26, 1960], No. 6806/60. Class 38 (2). [Also in Groups XL (b) and XL (c)] A variable ratio transformer comprises two coils 3, 4, the two coils being side by side on a common tubular former 6, a dust core 8 the same length as one of the coils and running inside the former. As the core is moved by screw adjustment 9 within the coils the inductance presented by the individual coils varies differentially without substantially changing the overall inductance of the two coils taken together.
Patent GB-1132547-A (GB)
Title: Improvements in super-regenerative resonance spectrometers
IPC: G01R33/36
Filed: 1967-02-13
Abstract: 1,132,547. Resonance spectrometers. DECCA Ltd., J.A.S. SMITH and D. A. TONG. Dec. 21, 1967 [Feb. 13, 1967], No. 6822/67. Heading G1N. In a spectrometer for detecting nuclear quadruple resonance or nuclear magnetic resonance in a sample coupled to a coil in the tank circuit of a super-regenerative r.f. oscillator 13 which is periodically quenched producing repeated decay and build-up of r. f. oscillations as quenching signals are applied and removed, resonance being detected by a change in the envelope of the r.f. oscillations during one quench cycle, sideband suppression is achieved by varying the frequency at which the quench signals are applied while controlling the duration of the quench signals independently of the quench frequency. In Fig. 3, a triangular waveform generator causes the frequency of an astable multivibrator 32 to repetitively increase and decrease and the output of multivibrator 32, or an external trigger source, triggers a voltage controlled monostable multivibrator 34 the output of which is amplified and fed to terminals 45, Fig. 4, of the super-regenerative oscillator 13 as a quench waveform. Meter 38 is calibrated to read quench frequency. The frequency of the super-regenerative oscillator is swept by applying a gradually changing bias signal to varactor diode D1; the oscillator frequency is also modulated at an audio frequency by applying an a. f. waveform to diode D1. The oscillator output is filtered to remove the quench frequency, amplified and fed, via a further amplifier 51' to an oscilloscope or a phase sensitive detector and pen recorder. An automatic gain control loop comprises filter 54 for removing the a. f. modulation frequency, leaving only random noise signals which are detected and compared in a differential amplifier 57 with a reference voltage. One output of amplifier 57 may be fed to multivibrator 34 to control the duration of the quench signals automatically. Another output of amplifier 57 is fed to terminal 47, Fig. 4, to control the extent of damping during the quench periods. The duration of the quench signals may be controlled by an external control voltage selectable by switch 59.
Patent GB-775748-A (GB)
Title: Improvements in coking iron oxide-coal mixtures
Inventor: BECKER JOSEPH
IPC: C10B57/12
Filed: 1955-03-08
Abstract: Iron ore-coke products are formed by mining iron-oxide bearing materials with coal, coking the mixture in a coking chamber and re-cycling at least a portion of the tar produced containing iron-bearing dust to another charge to be coked.  The mixture may contain only a small portion of the total coal charge to be coked for subsequent metallurgical operations, the ironbearing tar being mixed with a further similar ore-coal mixture only or, alternatively, being mixed with both the ore-coal mixture and with the straight coal charge which is separately coked.  The iron-bearing tar may be subjected to distillation before re-cycling, the iron-containing heavier fractions only being re-cycled.  The tar to be mixed with ore-coal charge may consist of collecting main condensate only, the condensate from primary coolers and subsequent by-product equipment being mixed with normal tar from ovens charged with straight coal. Specifications 749,802 and 775,747 are referred to.
Patent GB-1072261-A (GB)
Title: Improvements in or relating to telegraph systems
Inventor: PERKINS KENNETH GEORGE
IPC: H04L27/14
Filed: 1963-02-21
Abstract: 1,072,261. Data transmission; diversity reception systems; transistor amplifier circuits. PLESSEY-UK Ltd. Feb. 12, 1964 [Feb. 21, 1963], No. 6942/63. Headings H3T, H4L and H4P. In an arrangement for evaluating a two level signal in the presence of noise the Mark and Space signals vl, v3 are separated and judgment levels V1, V3 derived. The judgment levels, which represent the previous history of the signals, are voltages midway between the minima and maxima of the corresponding Mark and Space signals. By combining the four voltages in D.C. summing amplifiers a noise-free signal is obtained. The embodiment described is associated with a diversity frequency-shift system in which telegraph signals are sent on two radio channels. The Mark and Space signals (v1, v2, v3, v4) are combined, as indicated in Fig. 1 (not shown), with corresponding judgment levels (V1, V2, V3, V4). The D.C. amplifiers employed are as Fig. 2, and have a stabilizing feed-back loop including a Zener diode.
Patent GB-1371150-A (GB)
Title: Absorption unit for the absorption of carbon dioxide
IPC: B01D53/62
Filed: 1972-02-15
Abstract: 1371150 Gas absorption unit AGA AB 15 Feb 1972 [15 Feb 1971] 6971/72 Heading B1L An absorption unit for a breathing apparatus which utilises the carbon absorbent more economically has a series of sector-formed chambers 13 surrounding a central chamber 14. At least all the radial portions are made of a porous material but the whole structure can be so constructed. The inlet and outlets 10 are diametrically opposed.
Patent GB-445604-A (GB)
Title: Improvements in electric circuit arrangements for use in conjunction with electric discharge devices
IPC: H05B41/22
Filed: 1935-03-06
Abstract: 445,604. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent-Treuhand- Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) March 6, 1935, No. 7032. [Class 39 (i)] A circuit arrangement for starting and operating a discharge device comprises a portion consisting of two inductances joined by a capacity connected between the main electrodes, which portion is resonant at the supply frequency, and comprises also portions connecting auxiliary electrodes to the first portion so that the connection points are separated by the capacity. In one form, a gas- or vapour-filled device 1 has main electrodes 2 connected to each other by inductances 11, 12 and a capacity 10 and to the mains by leads 4, 6 and a stabilizing impedance 7. The circuit 11, 10, 12 including the impedance 7 if this is reactive, resonates at the supply frequency. Auxiliary electrodes 15, 16 are connected through leads 13, 14, which may include resistances, to opposite sides of the capacity 10.
Patent GB-470932-A (GB)
Title: Method of forming hollow articles
IPC: B29C39/10
Filed: 1936-03-09
Abstract: 470,932. Compound glass. ASCH, J. C. March 9, 1936, No. 7041. Convention date, Dec. 7, 1935. [Class 140] [Also in Groups V and XXVIII] Composite hollow articles are formed by introducing synthetic resin in liquid form into a hollow glass mould 2 around a hollow glass core 1 and curing the resin. The core or the mould or both may be retained to provide a support or protective cover. The cross-sections of the mould and core may differ, e.g. the mould may be circular and the core, octagonal, in cross-section.
Patent GB-399531-A (GB)
Title: Improvements in devices for massaging and other medical uses
IPC: A61H15/00
Filed: 1932-03-09
Abstract: 399,531. Electromedical and massage apparatus. HAWKINS, E. G. S., 50, Sussex Square, Brighton. March 9, 1932, No. 7068. [Class 81 (ii).] In a massaging-device, the massaging member is in the form of a roller 1 wound with two sets of helices of wire 20 connected to a source of current by conductors extending into a handle. A converter or eliminator for connection to a mains suply, or as shown in Fig. 1, a medical coil and battery is accommodated in the handle, and the device is provided with a switch. In the embodiment shown, the handle is made of insulating material such as Bakelite (registered Trade Mark) or other phenol-formaldehyde product, and encloses a battery 3, one pole of which is connected to one of the wire helices by conducting strips 19, 17. The other pole 6 contacts with one end of the coil 7, the other end of which is connected through make-andbreak device 10 and switch 13, 16 to conductor strip 17. The other helix is connected to the coil by strips 18, 23. Electrical contact is effected by connecting one end of each helix to one of the brass bearing plates 21 which are recessed to receive projections 22 on strips 17, 18. The latter are resilient so that the roller is easily replaceable. Reference is made to soft rubber, glass, vulcanite, spherical and polygonal section rollers, and to a hand roller coated with rubber. One or more of these rollers may be disposed in the housing. A number of batteries which can be selectivelv or collectively brought into operation may be employed, and a variable resistance may be employed therewith. According to the Provisional Specification, the electrical contacts on the roller may be in the form of rings or studs, and the roller may be hollow and perforated for distributing cosmetics.
Patent GB-919209-A (GB)
Title: Flash-back arrester for gas burners, especially for welding and cutting torches
IPC: F23D14/82
Filed: 1959-03-02
Abstract: 919,209. Gas torches. AXMANN, R. March 2, 1959 [March 3, 1958], No. 7109/59. Class 75 (1). A flash-back arrester disposed in the grip of a welding and cutting torch comprises a porous sleeve 2 disposed within a housing 1 and enclosing a non-return valve 3. The ends of the sleeve are sealed and gas is supplied to the inside of the sleeve through the non-return valve. The gas passes through the porous wall of the sleeve and then through an exit bore 8 in the housing 1 to the burner. In another embodiment the sleeve and housing are conical and the non- return valve is located near the large entrance end of the sleeve. Two flash-back arresters may be provided in a single grip.
Patent GB-728893-A (GB)
Title: A device for conveying delicate materials suspended in a fluid
Inventor: MEADOWS VICTOR SYDNEY
IPC: B65G53/00
Filed: 1951-03-28
Abstract: 728,893. Injectors. WESTWICK FROSTED PRODUCTS, Ltd. March 28, 1952 [March 28, 1951], No. 7147/51. Class 71. [Also in Group XXX] Peas (or soft fruit) fall into a body 20 and are ejected therefrom through a throat 21 by a water jet 22 which is slightly off-centre of the throat. The position of the jet may be adjusted in its mounting 23. The body 20 may be transparent.
Patent GB-715653-A (GB)
Title: Improvements in or relating to low oil-content electric power switches
IPC: H01H3/40
Filed: 1952-03-20
Abstract: 715,653. Oil-break switches. SIEMENSSCHUCKERTWERKE AKT.-GES. March 20, 1952 [March 22, 1951; July 24, 1951], No. 7235/52. Class 38(5) In a low oil-content circuit-breaker comprising main contacts 2. 3 which are shunted by a resistance 6 and are in series with further contacts 12, 13, the contacts 2, 3 are arranged in a substantially vertical insulator 5 and the contacts 12. 13 in an insulator 15 arranged at a larger angle to the vertical than the first, the two insulators being carried by a common support 10. The movable contacts 3, 13 are operated in that order by a rotatable insulator 20 over gearing 21 and driving screws 7, 17. In Fig. 2 (not shown), two such circuit-breakers are arranged in series on a common carriage with the insulators 15 adjacent each other.
Patent GB-891599-A (GB)
Title: Thermal insulation material
Inventor: COOK HENRY ALBERT
IPC: C04B28/00
Filed: 1959-03-02
Abstract: A moulded thermal insulating material comprises 45-94% expanded cellular perlite, 5-20% montmorillonitic clay as primary binder, 1-20% organic binder which is resistant to boiling water 0-15% fibre. The secondary organic binder may be polyvinyl acetate, or emulsified asphalt, or it may be of a type which is not water resistant per se, such as polyvinyl alcohol, an acrylic polymer, or a carboxy methyl cellulose, or starch, which has been rendered resistant to boiling water by the addition of 0,2-1% of silicone (organic silicon oxide polymer).  The clay may be bentonite, and the fibres may be asbestos or any animal, mineral or vegetable fibre.  A mixture of the materials is moulded at 20-60 p.s.i. and dried at 225 DEG F-400 DEG F.