baber/WOPTO huggingface dataset:
Patent GB-555733-A (GB)
Title: Improvements in or relating to closed feed systems for steam power plants
IPC: F22D11/06
Filed: 1942-03-02
Abstract: 555,733. Condenser systems. WEIR. Ltd., G. & J., and HILLIER, H. March 2, 1942, No. 2697. [Class 32] [Also in Group XIII] In a closed feed system for two or more steam plants operated in parallel, each plant comprising a steam generator, a steam turbine, and a condenser, having in its base a well of sufficient capacity to contain the difference in weight of water in the generator boiler between no load and maximum load plus a margin, the water level in the condensers is adjusted without the use of an external feed tank by condensate pumps and a water level controller associated with each well, the controller comprising an overflow valve and an inlet valve operated by change in water level in the well, in conjunction with piping connecting inlet branches to said inlet valves so that the condensate pump discharge passes through the overflow valve of the respective condenser when open and subsequently passes through any inlet valve which may be open in another condenser. Two steam power plants each comprising a steam turbine 6 receiving steam from a boiler 7 and exhausting into a condenser 8 provided with an integral well 9. A condensate extracting pump 10 discharges condensate from the well through an ejector condenser 14 to a pump 18 which returns the condensate through feed heaters 19, 20 to the boiler 7 ; air and gases are withdrawn by an ejector 13 discharging into the condenser 14 the condensate being returned through a trap 15 and line 16. Make up is supplied by an evaporator 26 heated by steam bled from the turbine 6 through line 22. The balanced accommodation of the water displaced from the boilers as the load increases is effected by means of a closed feed control comprising overflow and inlet valves 32, 33 to the respective wells controlled by a float 31 arranged in a float chamber 28 connected to the condenser so that the levels in the float chamber and well are always the same. Opening of the overflow valve 32 effects removal of water by means of pump 10, discharge line 34 and pipe 35 from which it flows to the inlet valve 33 of the other well or if this valve is closed through a pipe 37 and the spring loaded valve 38 to a reserve feed tank 39 through an open funnel 38a. If desired make up to the wells may be supplied from the reserve tank and controlled by a float 45 in a float chamber 41 the float operaing a valve 45 in the feed line 40. A valve arrangement comprising pistons arranged on a common spindle operated by the float lever and engaging a pair of valve seats is described.
Patent GB-913842-A (GB)
Title: Apparatus and method for making concrete building components
IPC: B28B7/02
Filed: 1959-01-26
Abstract: 913,842. Moulding concrete building elements. HENDERSON, A. Jan. 26, 1959, No. 2726/59. Class 87(2). Parts of a building comprising walls 14 and floor or roof 9 are cast, in order to be assembled subsequently to erect a building, in a mould apparatus comprising an horizontal mould having a bottom 4 and sides 6 supported on beams 2 and transverse vertical moulds 7 open at the bottom so as to be in communication with the floor &c. mould. Blocks 10 are suitably positioned between the sides 6 and the floor mould is filled with concrete, plates 15 are then bolted to the sides 6 against the mould 7 and concrete poured into the moulds 7. Each side 6 has a row of holes to allow adjustment of the position of the moulds 7 along the floor mould. A mould 7 may be constructed of two complementary L-shaped members. Fig. 5 (not shown) which can be moved apart to increase the thickness of the wall cast in it. A mould to cast a gable roof comprises beams 2 each in two parts in line the angle between which can be varied to suit the pitch of the roof required, Fig. 4 (not shown).
Patent GB-365798-A (GB)
Title: Drink cooling apparatus
IPC: F25D31/00
Filed: 1931-01-28
Abstract: 365,798. Receptacles for cooling drinks. HAILWOOD, E. A., Beacon House, Texas Street, Morley, near Leeds. Jan. 28, 1931, No. 2728. [Class 29.] A drink cooler comprises a barrel-shaped vessel, preferably of glass, having a tap T, spaced semicylindrical ice &c. containers C of rustless steel connected at their upper and lower ends by straps D, and a lid carrying a stirrer S. The upper ends of the flat sides of the ice containers are bevelled to form a shoot.
Patent GB-487588-A (GB)
Title: Method for transmitting time-signals
IPC: H04H60/68
Filed: 1937-08-04
Abstract: 487,588. Transmitting time phonographically. MORAWETZ, F. Aug. 4,1937, No. 2779/38. Divided application. [Class 40 (iv)] [Also in Group XL] Time signals from a sound record are broadcast continuously by short or ultra-short waves utilizing a rotating directional aerial. The speed of the aerial should be such that a fixed receiver receives signals at sufficient strength for a period corresponding to a complete time signal. Advertising matter may be alternated with the time signals.
Patent GB-593757-A (GB)
Title: Improvements in or connected with mining machines
IPC: E21C27/36
Filed: 1945-02-05
Abstract: 593,757. Mining-machines. MAVOR & COULSON, Ltd., and MAVOR, J. B. Feb. 5, 1945, No. 2791. [Class 68 (i)] In a machine in which coal is cut from the face by a direct shearing action applied horizontally to the back of the coal face, the machine has alternately movable shearing components, each of which is adapted to be held while the other is moved. A double-ended machine adapted to cut in opposite directions comprises a hydraulic ram the piston 16 of which has piston-rods 12, 13 secured to cross-heads 26 each provided with a bar 27 carrying a wedge 17 with a vertical cutting edge 18 adapted to cut a strip from the coal face ; the ram cylinder 15 has extensions 15A each secured to a plough and shovel element 19 with vertical edges 21, 22, the operative element 19 removing the coal left by the operative wedge 17 and discharging it laterally on to a face conveyer 30 anchored by jacks &c. 32. The conveyer 30 has a lateral rack 34 with which co-operate pawls 36, 38, reversibly attached respectively to either of the cross-heads 26 and to the cylinder 15 whereby the conveyer structure takes the reaction as the piston and cylinder are advanced alternately. In place of the rack 34 and pawls 36, 38, the reaction may be taken up by jacks applied to the cylinder 15 and cross-heads 26 alternately. A part 39 extends from the forward element 19 to engage the old coal face and so prevent inward divergence of the parts. The members 19 may have an upper horizontal edge 25 or not, while the vertical edges may be serrated and inclined upwardly and rearwardly. Percussive devices as in Specification 590,604 may be applied .to the parts 17, 19.
Patent GB-1358941-A (GB)
Title: Variable reluctance motor and control circuit therefor
IPC: B60L11/18
Filed: 1972-01-20
Abstract: 1358941 Control of variable reluctance motors FORD MOTOR CO Ltd 20 Jan 1972 [8 March 1971] 2805/72 Headings H2A and H2J A winding of a reluctance motor is connected between two opposed terminals of a bridge circuit having a solid state switching device in each arm, there being associated with the bridge circuit a source of electrical energy and a capacitor. The control circuit shown and the modified circuits of Figs. 3 and 4 (both not shown) are intended for use wth one phase of a three phase reluctance motor such as that shown in Fig. 1 of Specification 1,240,979. The circuits of the three phases may be commutated independently and/or in dependence on the position of the motor rotor. Various operating modes of the circuit shown are disclosed, aimed either at varying the motor torque or operating the motor as a regenerative brake. The capacitor 104 may be charged by passing current through the phase winding 110 (thereby producing torque) on triggering thyristors 116 and 90. (The charging is independent of the phase winding in the Fig. 4, circuit.) The capacitor charge is then reversed by passing a discharge current through the winding (producing more torque) on triggering thyristors 90 and 94. While current is passing through the winding, thyristor 88 or 92 may be triggered to permit freewheeling of winding current round a closed loop circuit. These steps may be repeated several times while the rotor and stator poles associated with phase winding 110 are moving into alignment (rotor position dependent operation). In the circuits of Figs. 3 and 4, the energy stored in a phase winding may be returned to the D.C. source, battery 112, when that phase winding is commutated off. Torque control is achieved by varying the magnitude of the R.M.S. current in the phase winding, by varying the width of the current pulse in the winding while the stator and rotor poles are moving into alignment, or by varying the number of current pulses fed to the phase winding during that time period. The thyristors shown may be replaced by transistors or triacs. The following methods of control are discussed with reference to the time variations of voltages and currents in each case, Figs. 1 and 5 to 9 (not shown):- (1) Voltage control mode uses the variation of voltage across capacitor 104. (2) Circulating current (free wheeling) mode is used with mode (1) for speeds below 70% of maximum value, in order to increase the duration of the current pulses. (3) Pulse frequency control mode is used at both high and low speeds. (4) Pulse shifting control mode is used with any of modes (1), (2) and (3). (5) Parallel commutation mode. (6) Self-synchronous mode is used to operate the motor with no rotor-position feedback and with a fixed pulse frequency, namely as a true synchronous machine. (7) Regenerative braking mode may employ any of modes (1) to (6) to produce regenerative braking operation.
Patent GB-1279043-A (GB)
Title: Improvements in or relating to coke ovens
IPC: C10B25/08
Filed: 1970-01-20
Abstract: 1279043 Coke oven doors KOPPERS CO Inc 20 Jan 1970 [21 Jan 1969] 2818/70 Heading C5E A coke oven door 19 carries a frame 15 defining an opening 21 for introducing a leveler bar (23) into the oven and adapted to be closed by a door 13 pivotally mounted at 43 through a bracket 41. The door 13 carries a cam latch 73 which engages a stop 75 on the door 19 and is operated by a handle 69 which pivots about a pin 55 on the bracket 41. The handle 69 may be manually operated, or electrically or pneumatically, e.g. by a rotary actuator 89 which carries an arm 85 and pin 87 which engages a loop 70 in the handle 69, first to disengage the latch 73 and then to swing the door parts 13, 41 about the pivot 43 to position C. The actuator 89 is mounted on the pusher machine (81), see Fig. 4 (not shown), and in a modification, see Fig. 5 (not shown), the actuator 89 is replaced by a piston and cylinder (103, 105).
Patent GB-633750-A (GB)
Title: Improvements in or relating to shoulder and like pads
IPC: A41D27/26
Filed: 1948-01-30
Abstract: 633,750. Garment pads. NORMAN, H. Jan. 30, 1948, No. 2868. [Class 141] A shoulder or other garment pad is formed of two or more parts so shaped that when they are secured together at their edges a closed hollow pad is formed. One part, such as the lower part 10, Fig. 1, which may be made of gauze or canvas, tends to maintain the other or upper part 11, which is preferably stiffened, in a bowed position. As shown in Figs. 2a, 2b, the upper part 11 is of similar shape to the part 10 but has a larger apex angle, and a section 20 of stiffened material is sewn to the part 11 which may also be reinforced by stitching. The two parts are secured together by stitching 22, Fig. 1, the edge 16 of the lower part being folded up and stitched to the upper part along a line 24 inset from the edge 19. In alternative constructions, the stiffened section 20 may be replaced by a strip of bone or metal. The under part may have the same apex angle as the upper part and be pleated to shape. The pad may be made of a single piece of material folded over, or may be circular.
Patent GB-312623-A (GB)
Title: Improvements in or relating to metal-shaping machines
IPC: B23D1/08
Filed: 1928-10-25
Abstract: 312,623. Oldfield, T. Oct. 25, 1928. Shaping.-A shaping-machine of the travelling head type comprises a bed A having an upper front guide C and a lower rear guide D for the head E which carries the tool-ram P. The head is traversed by a pinion F<2> engaging a stationary rack F<1> and is provided with castors or antifriction rollers H mounted within recesses J, M, the recesses being accessible from the side to enable the rollers to be adjusted by nuts K Hand traverse of the head is provided for at R, indexing of the work by a connecting-rod S, and quick traverse of the head by gearing V. The machine, is also provided with the usual handle U for regulating the projection of the ram, means W for imparting feed to the head, a shaft X for driving the gear-box controlling the speed or number of strokes of the ram, a hand-wheel E<1> for adjusting the length of stroke of the ram whilst the machine is in motion, and a driving- pulley shaft Y. Openings Z<1>, Fig. 7, in the head E and bed A are adapted to register in order to receive long bars when requiring to have keyways cut therein.
Patent GB-930807-A (GB)
Title: Improvements in supports for pipes
Inventor: LORD EDWIN DEREK
IPC: F16L3/205
Filed: 1961-01-25
Abstract: 930,807. Constant-force spring units. VOKES GENSPRING Ltd. Jan. 24, 1962 [Jan. 25, 1961], No. 2994/61. Class 108(3). A constant force support for pipes, e.g. steam pipes in ships and which ensures against damage due to sudden shock, comprises a load frame 5, 6, 7 which is pivoted at 4 to the side plates 2, 3 of a base plate 1 and which is loaded by a pair of compression springs 11, 12 acting through a piston-rod 10 pivoted to the load frame 5, 6, 7 a piston 22, carried by the rod 10, working in an hydraulic cylinder 18 pivoted at 15 to the base plate 1. The springs 11, 12 are constrained between a flange 14 on the cylinder 18 and a plate 13 adjustably threaded on to the free end of the piston-rod 10. Light loads are applied to the load frame at a point 9 and heavy loads are taken by the mounting 8 orifices 26 through the piston 22 allowing extension and contraction of the springs 11, 12 only at a slow rate. In an alternative arrangement fluid pressure, generated in an hydraulic cylinder by movements of the pipe support, is applied, e.g. to an elastomeric ring, not shown, to jam the piston, or pistonrod, upon a sudden shock to the system. The support may be adapted for suspending a pipe beneath it.
Patent GB-113662-A (GB)
Title: Improvements in or relating to Apparatus for use in Preventing the Collection of Moisture on Shop and like Windows.
Inventor: CREASEY HECTOR HENRY
IPC: A47L1/16
Filed: 1917-03-01
Abstract: 113,662. Creasey, H. H., and Vere, M. C. March 1, 1917. Windows, preventing condensation on.-Hot - air or the products of combustion is delivered against the foot of the pane 3 by a pipe 1 which is slit along its whole length or has a succession of slits and may be made up of sections as shown. The slots may be graduated in width according to the distance from the supply connexion to render the effect more uniform throughout.
Patent GB-582767-A (GB)
Title: Oscillation generator
IPC: H03B5/34
Filed: 1944-02-18
Abstract: 582,767. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 18, 1944, No. 3108. Convention date, Feb. 20, 1943. [Class 40 (v)] In an oscillation generator comprising two valves, having anode, cathode, control grid and screen grid, in push-pull, tuned circuits connect the two anodes and two grids, respectively, the two being inductively coupled, a piezo-electric crystal having a narrow pass band being connected between two series connected impedances in the grid circuit so that oscillations occur only at crystal frequency. As shown in Fig. 1, the crystal 11 is connected between two tuning condensers 8 and 9, arranged for gang control, the resistance 14 being shunted across the crystal to prevent unwanted oscillation. In a modification, Fig. 2, not shown, the crystal is placed between two coupling coils, inductively coupled to the grid tank inductance coil 5, the oscillations damping resistance being shunted across the three elements.
Patent GB-1140429-A (GB)
Title: Electronic organ system
Inventor: LESLE DONALD JAMES
IPC: G10H1/045
Filed: 1966-01-24
Abstract: 1,140,429. Electrophonic instruments. COLUMBIA BROADCASTING SYSTEM Inc. 24 Jan., 1966, No. 3165/66. Heading G5J. In an electrophonic instrument in which the electrical output to the speaker is tapped and after frequency shifting is applied to an additional speaker to produce a celeste effect the notes are divided into alternate note or octave groups and each group is applied differently to the two channels. The channels may each consist of two or more branches, each with its own speaker. In one embodiment, the groups are applied one to each branch of the first channel and one to each branch of the second channel. This arrangement may be duplicated and alternate octaves dealt with separately. In a further form the notes from one group are applied to one branch of each channel and the notes from the other group are applied to the other branches of the channels in opposite phases. This latter form has rotating speakers to give a vibrato effect. An arrangement which is a hybrid of these forms and employs fixed speakers is also described. The frequency shifting may be effected by a device comprising four spaced plates to which the output successively displaced in phase by 90 degrees is applied and a rotating pick-up plate which scans the plates cyclically. In the frequency shifter shown in Fig. 3 signals applied at 16 are phaseshifted as indicated at 26, 29 and 30 and applied to fixed plates 31 to 34. An eccentric pick-up plate 36 is rotated in an irregular manner to give the desired variable frequency signal at the output 17. The irregular drive may be effected as shown in Fig. 6. The pick-up plate 86 is driven by a motor 91 through a belt 88 the slack in which is taken up by a spring-pressed idler pulley 92 and a pulley 93 moved by a lever 96 and a cam 95 or a rotating crank 99 causing the slack to pass from side to side. In a modification the pulley 87 is an eccentric. In a further modification an induction motor driven by a variable frequency oscillator is employed.
Patent GB-1041766-A (GB)
Title: New antibiotic m-411 and method of preparation thereof
IPC: C12P1/06
Filed: 1965-01-25
Abstract: Antibiotic M-411 is produced by cultivating an M-411-producing strain of Streptomyces impexus, e.g. NRRL 3089 or NRRL 3090, under submerged aerobic conditions in a culture medium containing assimilable sources of <PICT:1041766/C2/1> carbon, nitrogen and inorganic salts at 24 DEG to 32 DEG  C. for 2 to 6 days.  The antibiotic may be isolated from the clarified broth by extraction with a polar organic solvent, e.g. acetone or methanol. Purification may be by (a) adsorption of impurities on activated carbon from aqueous acetone solution of M-411, (b) adsorption of impurities on the chloride form of trimethylbenzylammonium polystyrene resin, (c) precipitation of impurities by means of Reinecke salt, (d) precipitation of M-411 from solution by addition of a non-solvent.  Antibiotic M-411 is effective against gram-positive bacteria; it is a white powder soluble in CH3OH, fairly soluble in C2H5OH, sparingly soluble in chloroform, diethyl ether, ethyl acetate and dry acetone; aqueous solutions stable at pH 2 to 10 at 4 DEG  C.; contains 43.01% C, 6.2% H, 13.28% N, 25.89% O, 10.24% Cl and 1.40% Na; the infra-red spectrum is shown in the drawing.
Patent GB-105065-A (GB)
Title: Improvements in or relating to the Manufacture of Acetic Acid.
Inventor: DREYFUS HENRY
Filed: 1917-03-06
Abstract: 105,065. Dreyfus, H. March 6, 1916, [Convention date]. Acetic acid is prepared by passing a mixture of acetaldehyde vapour with air or oxygen through vessels or tubes containing contact substances, for example platinized asbestos, at a temperature above the boiling-point of acetic acid and below 400‹ C. The mixture of aldehyde vapour and air or oxygen may be preheated to a suitable temperature before entering the contact apparatus; the heat of the gases issuing from the contact apparatus may be utilized for this purpose. The process is carried out in apparatus similar to that employed in the manufacture of sulphuric anhydride by the contact process. The Specification as open to inspection under Sect. 91 (3) (a) is not restricted to the above range of temperature. This subject-matter does not appear in the Specification as accepted.
Patent GB-729553-A (GB)
Title: Improvements in or relating to battery cages for poultry
IPC: A01K31/17
Filed: 1952-02-08
Abstract: 729,553. Poultry batteries. GLEED, C. V. May 8, 1953 [Feb. 8, 1952], No. 3382/52. Class 5 (2). A poultry battery comprises rows of cages arranged in back-to-back tiers with a central corridor in which are located food-troughs 3 the food being supplied to the troughs from a hopper 4 and circulated continuously through them by chains 6 and finally fed back to the hopper 4 by an elevator 7. The cages, Fig. 9, comprise wire frames 26 connected together by hooks 31, 34 and eyes 30 and supported above droppings-trays 23 over which sweep the blades of reciprocating-scraper conveyers, Fig. 8 (not shown). The food passes from the end of each trough 3 to the lower trough through a funnel 5, 5a, 5b and is finally fed into the base of the screw elevator 7, the chains 6 and elevator 7 being driven by an electric motor 21. The cage-floors 37 slope outwardly so that eggs will roll on to rubber-belt conveyers 14 passing along the outsides of the cages. The belts discharge into an arcuate shoot 15 feeding a further shoot 16 containing flaps 19, spring- loaded to reduce the rate of travel of the eggs in their descent to a sponge-rubber lined receptacle. A water-pipe 10 having nipples 12 at intervals is mounted above each cage adjacent to the food-trough.
Patent GB-1260741-A (GB)
Title: Erosion protection device for airborne or space vehicles
IPC: B64D45/00
Filed: 1969-01-21
Abstract: 1,260,741. Rain erosion protective devices. SANDERS ASSOCIATES Inc. 21 Jan., 1969 [22 Jan., 1968], No. 3427/69. Heading B7W. [Also in Division H4] An airborne or space vehicle 10 with a vulnerable forward surface 12 (such as a radome or infra-red dome of glass, fibre-glass or thin metal) has a protective device 16, with an open forward end, fastened on to the vehicle so that a region of high pressure ram air is formed in which raindrops are aerosolled by the high pressure air to prevent the erosion of the vulnerable surface. The device 16 which may be in the form of a cylinder, truncated ogive, or truncated cone is made of aluminium or reinforced injection moulded plastics and has drainage holes 36 of total area less than 10% of the forward surface. The surface 12 may be protected before take-off by a membrane 38 which is ruptured by a serrated edge 42 when the vehicle is in flight. The device may be permanently fixed to the body 10 or it may be attached so as to be releasable when not required by an explosive bolt 30 which allows device 16 to pivot downwardly about a releasable hinge 34 to a position in which it falls away from the vehicle.