baber/WOPTO huggingface dataset:
Patent GB-659011-A (GB)
Title: Improvements in or relating to the manufacture of cyclic ethylmethylpolysiloxanes
IPC: C07F7/21
Filed: 1949-06-14
Abstract: Cyclic polysiloxanes of the formula (CH3 C2H5.SiO)n, where n is an integer of at least 3, by hydrolysing and condensing silanes of the formula CH3.C2H5.SiX2, which may be made as set forth in Specification 632,824, [Group IV (b)], wherein X is a hydrolysable group such as halogen or alkoxy.  The hydrolysis may be effected by water, at temperatures from 0 DEG  to 250 DEG  C. with or without a solvent such as ether and in the presence or absence of condensation catalysts.  Low molecular weight cyclic ethylmethylsiloxanes formed during the hydrolysis may be separated by distillation.  The cyclic siloxanes of low molecular weight may also be made by heating in the absence of oxygen, high polymeric ethyl-methylsiloxanes to a temperature above 250 DEG  C. The low molecular weight cyclic polymers may be further polymerized by contact with a polymerization catalyst, e.g. a strong acid or an alkali metal hydroxide, preferably at 50 DEG  to 250 DEG  C. and, if desired, in presence of a solvent. Examples are given.  The cyclic polysiloxanes may be used as low temperature lubricants and damping media; to increase the viscosity and inhibit the tendency to foam of hydrocarbon oils; to make elastomers which remain flexible at low temperatures, by incorporation of fillers, e.g. metal oxides and carbonates, asbestos and glass flock, and vulcanizing agents, e.g. benzoyl peroxide and tertiary butyl perbenzoate; they may be co-polymerized with other siloxanes and the products diluted with oils or solvents to form coating compositions.  Specification 659,012 also is referred to.ALSO:Cyclic polysiloxanes of the general formula (CH3.C2H5.SiO)n, where n is an integer of at least 3, are incorporated in hydrocarbon oils to inhibit foaming.
Patent GB-504228-A (GB)
Title: An improved draught-excluder for doors
Inventor: BRADLEY RICHARD NORMAN
IPC: E06B7/18
Filed: 1938-05-27
Abstract: 504,228. Draught - excluders. BRADLEY, R. N. May 27, 1938, No. 15839. [Class 20 (iii)] A draught-excluder for a door comprises a resilient strip 8 with tapered edge 81 and shouldered portion 82 loosely enclosed in a groove 9 of a bar 10 secured to the door. The strip may be inserted or removed endwise, the end of the groove being closed when required by a pivoted plate 14, Fig. 4. The door may be rabbeted to receive a bar 10 of such form that the bar is flush with the door. The tapered edge 81 of the strip may be formed with ribs to increase the friction between the strip and the floor &c.
Patent GB-181366-A (GB)
IPC: F02B55/02
Filed: 1922-06-07
Abstract: 181,366. Meyer, R. June 9, 1921, [Convention date]. Drawings to Specification. Alloys.-Vanes for rotary engines are formed with plugs of aluminium, or other light metal such as the alloy of aluminium and magnesium in the proportion of 6 : 9, inserted in holes bored in the wrought iron or steel plates forming the vanes.
Patent GB-1120046-A (GB)
Title: Improvements in or relating to dispenser boxes
IPC: B65D83/08
Filed: 1966-04-12
Abstract: 1,120,046. Tissue dispenser box. CANADIAN INTERNATIONAL PAPER CO. 12 April, 1966 [12 April, 1965], No. 15914/66. Heading B8P. A box 10 dispensing interleaved facial tissues or paper napkins has a flap 21 hingedly connected to the front wall 14 by a score line 22, said flap 21 having a preferably oval aperture 19 through which tissues can be pulled and, like the flap 21, formed by removing a section by tearing along a line of weakening. The flap 21 which, on removing a tissue, is raised until it catches against the box top 11, allows the aperture 19 always to overlie the tissues closely and so ensure the necessary frictional engagement between successive tissues to cause each tissue to pull a succeeding tissue into the aperture 19 ready for subsequent removal. By removing the flap 21 entirely from the interior of the box (Figs. 5, 9, not shown) a number of tissues may be manually removed as a unit through the opening 30.
Patent GB-704141-A (GB)
Title: Improvements relating to television relay apparatus
Inventor: GARGINI ERIC JOHN
IPC: H03K4/32
Filed: 1950-06-28
Abstract: 704,141. Distributing television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 14, 1951 [June 28, 1950], No. 16087/50. Class 40 (4) [Also in Group XL (c)] Fig. 1 shows a television relay apparatus comprising a distributing unit 1 and one of a plurality of terminal units 2. The incoming televisi on signal which has visi on and sound modulated on carriers of 45 and 41.5 Mc/s frequency respectively has the sound signal separated and demodulated in unit 6 and is then modulated on a carrier wave in the range 54-144 kc/s and transmitted to the lines. 3, a portion being tapped off and demodulated in unit 24 of terminal unit 2. The modulated video carrier signal is mixed with a 39.7 Mc/s carrier signal from oscillator 8 in mixer 7 to give a 5.3 Mc/s carrier modulated with the vision and synchronizing signals which is passed to lines 3. Mixer 7 partially suppresses the upper side-band in its output, part of which is fed to a demodulator 9 and to a li miter 10 which suppresses the video signals. The synchronizing signals are fed through isolating stages to line and frame sawtooth generators 11 and 12 respectively, the line synchronizing pulses being delayed to compensate for delays in the transmission of pulses in the apparatus. A wave-form such as shown in Fig. 3 (a) is produced from the line waveform generator 11 and a waveform as shown in Fig. 3 (b) from the frame pulse generator 12. These waveforms modulate a 1 Mc/s carrier wave in modulator 17 to produce a modulated carrier which has an envelope as shown in Fig. 3 (c) which is passed to lines 3. At the terminal unit 2 the 1 Mc/s modulated carrier is filtered out, amplified in unit 23 and demodulated and separated into the line and frame synchronizing signals in unit 26 to synchronize the line and frame scanning generators of C.R. tube 25 (see Group XL (c)). The 5.3 Mc/s modulated carrier is amplified and demodulated in unit 22 and applied to modulate the beam of C.R. tube 25 in known manner. E.H.T. for C.R. tube 25 is generated in unit 26 (see Group XL (c)) and if required the power supply for the terminal unit 2 may be transmitted from the distributing unit 1 by means of an unmodulated 3 kc/s carrier from oscillator 57 which may be used to charge a battery at the terminal unit. Additional sound programmes may be modulated on to suitable carrier waves and also transmitted over the lines 3.
Patent GB-1510585-A (GB)
Title: Boiler section for a sectional boiler
IPC: F24H1/32
Filed: 1976-04-21
Abstract: 1510585 Sectional boilers BUDERUS'SCHE EISENWERKE 21 April 1976 [22 April 1975] 16142/76 F4A A sectional boiler is formed from a set of upright hollow sections (provided with sealing strips 6) defining an upper gas pass and a lower combustion chamber 3; each section having an interrupted side-wall adjacent the combustion chamber and adjacent sections in the boiler being turned through 180 degrees (Fig. 1) so that each interrupted side-wall is bounded by two complete side-walls 2. Atmospheric burner tubes can be inserted via the openings in the combustion chamber caused by the interruptions (Figs. 9, 10, not shown) or, when a burner is arranged to fire from an end down the chamber, these openings can be closed. This closure can be effected by increasing the width of each wall 2 relative to the rest of the section (Figs. 2, 5, not shown), extending the sealing strips 6 of the walls 2 (Figs. 3, 6, not shown), or providing plates to cover the openings (Figs. 4, 7, not shown).
Patent GB-933471-A (GB)
Title: Improvements in electromechanical control systems
Inventor: BUCKLEY PETER LEWIS BERESFORD
IPC: G05D1/02
Filed: 1958-05-20
Abstract: 933,471. Automatic steering control. HARTLEY ELECTROMOTIVES Ltd. Aug. 20, 1959 [May 20, 1958], No. 16212/58. Class 38 (4). In an electromechanical control system, variations of an input signal in either sense from a datum value unbalance a circuit to run a servomotor in a corresponding direction, followup to re-balance the circuit being provided through means which under certain conditions are self-centring and provide a feedback signal to balance an input signal having the datum value. In a system for automatically steering a ship, Fig. 1, signals from a magnetic or gyro compass are applied through a terminal 11 to one triode of a double triode valve 12 associated with a differential relay 14 controlling a servomotor 38 operating the rudder. Follow-up is provided by applying to the other triode the output of a potentiometer 22 operated by the servomotor. The arrangement is such that the signals applied to double triode 12 are balanced and the servomotor stationary when the ship is on the desired course. To set the desired course an electromagnetic clutch 37 is operated to disengage potentiometer 22 from the servomotor whereupon the potentiometer is spring returned, Fig. 2 (not shown) to a central datum position. The ship is then steered manually on to the desired course and the compass signal adjusted to equal the datum signal from potentiometer 22. Upon re-engagement of the clutch, course is maintained automatically. The arrangement permits the course to be maintained with the rudder offset, e.g. to counteract cross-winds, single screw operation &c.
Patent GB-265453-A (GB)
Title: Improvements in devices for preserving and flavouring tobacco
IPC: A24F25/02
Filed: 1926-06-28
Abstract: 265,453. Kemper, W. June 28, 1926. Internal fittings.- In a container for storing tobacco and tobacco products comprising a receptacle a divided by a perforated partition e into compartments for the tobacco and a flavouring substance, the partition is provided with a rotatable disc valve f adjustable from outside by means of an arm h. The tobacco is placed on a sieve j in the upper compartment and tobacco liquor or other flavouring substance is placed in a container d in the base, which may be attached by a bayonet or other connection to the receptacle. The cover a is provided with a hollow knob l fitted with a rotatable disc valve for venting the upper compartment. In modifications, a container for a flavouring substance is provided in the upper compartment or in the lid, and may be used alone or in addition to the substance in the container d by closing or opening the valve f.
Patent GB-823886-A (GB)
Title: Improvements relating to air cleaners with a replaceable filter pack
IPC: F02M35/024
Filed: 1957-05-22
Abstract: 823,886. Air cleaners. KNECHT, A. May 22, 1957 [Nov. 29, 1956], No. 16283/57. Class 8(2). A combined silencer and air filter comprises a dome-shaped casing 7 having a dust laden air inlet 10 and a generally flat annular base plate 6 having a central clean air outlet 11 and a marginal bead 5 between which and a bead 8 on the rim of the casing 7 is clamped a radially extending portion of an annular end disc 3 of an inward flow star-sectioned paper filter sleeve 1, the other end of which is closed by a disc 2. The silencing chamber is formed by the casing 7 and the sleeve 1. As shown the outlet 11 projects within an inturned sleeve 12 of the base plate 6 but may be integral therewith.
Patent GB-722361-A (GB)
Title: Improvements relating to automatic gain controlling arrangements for telecommunication systems
Inventor: RALPH FRANK
IPC: H04B3/10
Filed: 1952-06-27
Abstract: 722,361. Automatic volume control. SIEMENS BROS. & CO., Ltd. June 26, 1953 [June 27, 1952], No. 16299/52. Drawings to Specification. Class 40 (4). In a pilot-controlled gain-regulating system, the voltage derived from the pilot for effecting gain control is applied also to a circuit comprising a storage or " memory " condenser in series with a source of fixed bias, so that the charge on the condenser and the bias voltage may jointly effect control if the pilot should fail. The system described is identical with that described in Specification 732,555.
Patent GB-728148-A (GB)
Title: Large metal rolls
Inventor: THORNYCROFT OLIVER
IPC: D21G1/02
Filed: 1952-06-27
Abstract: 728,148. Roller construction; calender rollers of paper machines. BOWATERS DEVELOPMENT & RESEARCH, Ltd. June 29, 1953 [June 27, 1952], No. 16321/52. Classes 42 (2) and 96. A large roll with a thick shell, the external end portions of which are adapted to be carried by supporting bearings leaving a long intermediate length externally unsupported, such as the bottom roll of a super-calender for paper, includes a tie tube, preferably of high-tensile steel, mounted and held longitudinally within the bore of the roll shell along the whole or substantially the whole length of the roll. The tie tube prevents break-up of the roll in the event of fracture of the shell. As shown, the tie tube 7 is located in the bore 2 of the roll shell 1 and is screwed at its ends into nuts 21, 22 shaped to abut shoulders 5, 6 in the bore 2. The tube is supported in the bore by collars 10, 11 each comprising two semicircular rubbercovered metal parts clamped around the tube. The roll is assembled with tube 7 in tension by fitting nut 21 and collars 10, 11 on to the tube, drawing the tube through the shell, screwing on nut 22, heating the tube (e.g. by steam passed through holes 23, 24 in the nuts), tightening nut 22 and cooling the tube by passing cold water therethrough; a further heating of the tube and tightening of nut 22 may be effected after which the nut is fixed with a set-screw.
Patent GB-1079001-A (GB)
Title: Regulated electric power supplies
IPC: H02M3/10
Filed: 1965-04-15
Abstract: 1,079,001. Automatic voltage or current control. LAMBDA ELECTRONICS CORPORATION. April 15, 1965 [April 16, 1964], No.16361/65. Heading G3R. A regulated D.C. power supply comprises a capacitor C56 which is first charged from a D. C. source Vs through a thyristor GR1, and then discharged through a second thyristor GR2 into a filter C51, L53, across which the load is connected; one thyristor is triggered when the output voltage drops below that of a reference and the other is automatically triggered when the first switches off. C56 is in an underdamped LC circuit with L54 and hence begins to charge to VI greater than Vs, thus back-biasing GR1 and switching it off; the circuit thus provides pulses of constant amplitude and width, spaced according to the load requirements. In Fig. 1A (not shown) the circuit is applied as a course regulator in series with a transistor fine regulator which may be switched to either constant voltage or constant current operation. Transistor triggering and voltage comparison circuits are described including features to prevent both thyristors being on together and other mal-operation. In this case the D. C. source is rectified A. C., and a Zener . diode prevents triggering of the first thyristor when Vs is too low. In Figs. 1 and 1A the error signal controls triggering of the first thyristor GR1, but in Fig. 2 (not shown) the second thyristor is so controlled. In Fig. (not shown) the first thyristor is triggered by the error signal which may be derived from voltage or current measurements and firing of the second is delayed while the capacitor begins to discharge back into the supply; when the energy remaining in the capacitor is equal to that required by the load (detected by voltage dividing circuits) the second thyristor is triggered. When operating as a constant current arrangement the pulse frequency is constant but the amplitude varies to suit the load. Two alternative circuits Figs. 4 and 5 (not shown) using this arrangement are described in detail, and they include current limiting transistor circuits which prevent operation when the volt drop across a series resistor is greater than a reference voltage, and compensation for high supply voltage, detected by a Zener diode. Fig. 5 includes an error averaging circuit.
Patent GB-457863-A (GB)
Title: Improvements in or relating to illuminating devices
IPC: F21S8/06
Filed: 1935-06-05
Abstract: 457,863. Lamps for direct or indirect illumination. DOWNER, G. V., 5, Lansdowne Place, Guilford Street, St. Pancras, London. June 5, 1935, No. 16371. [Class 75 (iv)] In a lighting unit for direct or indirect illumination, a trough or like elongated casing housing a light source 1 has a reflecting inner surface 3 and a reflector or reflectors 5, 7 forming a ridge or ridges extending transversely round the inside of the trough and surrounding the light source on at least three sides of the latter, the sides of the ridge or ridges converging from the inner surface of the trough towards the source so as to reflect light towards the ends of the trough. A further reflector 6 with inclined sides may be arranged below the light source so as to complete the ridge on the fourth side. The reflectors 5, 7 may be formed as indentations in the base and sides of the trough. The reflectors may be mirrored or matt-white. The open side of the trough may be covered with transparent or translucent material.
Patent GB-709191-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/44
Filed: 1949-06-20
Abstract: 709,191. Valves. ANGLO-IRANIAN OIL CO., Ltd., and FRASER, D. S. D. June 20, 1950 [June 20, 1949], No. 16383/49. Class 135 A valve comprises a casing 1, Fig. 1, with a flange 4 dividing it into two zones and having passages 32 communicating with the exterior of the casing, a ported sleeve 6 having a coned fit in the flange, movable valve members 11, 12 for controlling ports 7 in the sleeve and movable by nuts 14, 15 respectively engaged by left- and right-hand threads on an operating spindle 13, the nuts and valve members being non-rotatable. In the closed position, rings 27, Fig. 2, on the valve members engage rings 28 on the sleeve. The nuts 14, 15 are retained in recesses in the valve members by rings 17, 19 respectively, permitting a slight amount of relative movement, so that when the spindle is rotated to open the valve, the nuts move first to disengage seatings 43 whereby fluid is admitted to a space 29 between the members to balance them. This space communicates with the passages 32, one of which is fitted with a cock 34 and the rest with plugs 33. Thrust races 38, 39 for the spindles are mounted in a housing 40 capable of slight movement relative to casing 1 so that the valve members may seat with equal pressure. An extension 22 of nut 15 engages the lower end of the housing 40 in the full open position of the valve. An indicator 46 geared to the spindle hand-wheel 42 shows the position of the valve members. The cock 34 may be left open to indicate flow through the valve, used for draining the space 29 when the valve is closed, or used to test for leakage past one or other of the members. The sleeve, including the stem and valve members, is removable as a unit and jacking screws may be provided in a flange 9 on the sleeve to engage a flange 9a on the casing for disengaging the sleeve 6 from the flange 4. According to the Provisional Specification, short sleeves are attached to opposite sides of the flange, the valve members seat directly on the flange and passages through the members are controlled by seatings on the nuts. Hinged flap valves control communication between the passages and the space 29 between the members.
Patent GB-810713-A (GB)
Title: Improvements relating to brick moulding machines
IPC: B28B11/00
Filed: 1957-05-23
Abstract: 810,713. Brick-moulding machines. CLAYTON, GOODFELLOW & CO. Ltd., and HARRISON, J. May, 23, 1957, No. 16393/57. Addition to 665,281. Class 87(2). The brick-moulding machine which forms the invention of the parent Specification is modified by the springs 47 being mounted in the connecting-rod or rods 21 on the opposite side of the crosshead pin 22 to the crankshaft. A worm shaft 43 operates a lever to raise or lower a drop box and thus vary the amount of clay fed to the moulds, as in the invention of the parent Specification. A switch box 51 and pressure gauge 55 are mounted on the connecting rod. The springs 47 deflect under pressure and move a plunger 50 which in turn moves the operating plunger 56 of the pressure gauge 55. By means of a screwed setting block 57 the plunger 56 can be raised to leave a gap between it and an adjusting screw 53, screwed into a block 52 carried by the plunger 50, whereby the gauge does not start to record until a certain minimum pressure. The electric motor 70 which drives the worm shaft 43 is controlled through solenoids, by switch contacts 60, 62 and 61, 63. While the contacts 60, 62 are open the motor rotates to increase the clay feed until the resulting pressure increase deflects the springs 47 sufficiently to cause the block 52 on the plunger 50 to move a lever 59 and close the contacts, the motor then stopping. A delay switch obviates stopping of the worm at a temporary pressure increase. If the pressure rises too much the deflection of the springs 47 causes the contacts 61, 63 to close and the motor 20 then rotates in the opposite direction and decreases the clay feed. The lever 59 is biassed away from the fixed contacts 62, 63 by a spring 65 surrounding en earth terminal 64. A cam 101 on the shaft 43 closes a limit switch 100 to prevent operation of the pressure control under unsuitable conditions. Excessive deflection of the springs 47 could be used simply to stop the machine. Helical springs could replace leaf springs.
Patent GB-1116160-A (GB)
Title: Improvements in or relating to steel alloys
IPC: C22C38/54
Filed: 1966-04-14
Abstract: A steel comprises:-  .C.0.1.0.2% .Si.0.15.0.7% .Mn.0.6.1.2% .Cu.0.1.0.5% .Cr.0.7.1.5% .Mo.0.15.0.4% .Ni.0.05.0.3% .V.0.01.0.12% .Zr.0.001.0.1% .B.0.001.0.005% .Al.0.01.0.1% the balance, apart from impurities such as N and O being iron The alloy is hardened above the A3 point and tempered below the A1 point.
Patent GB-152072-A (GB)
Title: Improvements in and relating to heaters for motor driven vehicles
IPC: B60H1/00
Filed: 1919-07-02
Abstract: 152,072. Marks, E. C. R., (Perfection Heater & Manufacturing Co.). July 2, 1919. Radiators.-A heater for motor-vehicles utilising the exhaust gases comprises end fittings 9 projecting above the floor boards 1 and connected by coned-ended pipes 15 in triangular relation and held by a tie-rod 16. The whole is covered by a perforated cover 18. A hand-operated crank 40 which is connected to a throttle disk 30 by a rod 34 and arm 32 controls the passage of gases from the exhaust pipe 26 to the flexible connecting tube 22 and hence to the heater.
Patent GB-957707-A (GB)
Title: Tubular guide and heat-insulator unit for nuclear reactors
Inventor: CAILLAT ROGER
IPC: G21C11/08
Filed: 1963-04-26
Abstract: <PICT:0957707/C1/1> A coolant channel in a gas cooled nuclear reactor (see Division G6) includes a pyrolytic graphite heat insulating tube which has a coefficient of heat conductivity which is low in the radial direction and high in the axial direction. The insulating tube 10 is of pyrolytic graphite, the crystals of which have their senary axes orientated perpendicular to the axis of the channel.  The conductivity in the longitudinal direction is nearly a hundred times greater than in the radial direction.  In order to overcome the difficulty of producing pyrolytic graphite tubes of sufficient length, they may be formed of short sections, welded as at 14.  The pressure tube 2 may be a zirconium alloy, and the guide tube 8 may be sintered magnesium.  A centring device is provided for locating the three tubes. In an alternative embodiment, the guide tube 8 is replaced by pyrocarbon layer integrally coated to the interior of the insulating tube 10; unlike pyrolytic graphite, pyrocarbon can withstand the abrasion caused by movement of the fuel element. Alternatively, the pyrolytic graphite tube may be replaced in the first embodiment by a tube of partially graphited pyrocarbon. Specification 941,668 is referred to.