baber/WOPTO huggingface dataset:
Patent GB-1352863-A (GB)
Title: Bias control for electrostatic image development
IPC: G03G15/06
Filed: 1971-05-03
Abstract: 1352863 Electro-photographic developing process EASTMAN KODAK CO 3 May 1971 [1 May 1970] 12657/71 Heading G2H An electro-photographic developing process comprises measuring the charge levels of the background areas of an electrostatic latent image and controlling the bias applied to a development electrode accordingly. As shown, as an image bearing web 10 is fed past a probe 17, an electrometer 19 provides an input at 45 proportional to the charge level. The input is amplified at 21 and, if less than a predetermined value, causes a capacitor 30 to discharge through a resistor 47 and diode 46 to a voltage corresponding to the input. Contact 25A is kept open by a photo-cell detector 24 while the whole of the image passes probe 17, so that the final charge on capacitor 30 corresponds to the minimum charge level of the image. When the image passes another photo-cell detector 26, a contact 27A is closed and the voltage on capacitor 30, amplified at 22 and 23, controls a voltage supply 18 which biases magnetic brushes 14 at an image developing station 13.
Patent GB-605927-A (GB)
Title: Improvements in or relating to protective control systems for electric motors
IPC: H02H11/00
Filed: 1946-04-27
Abstract: 605,927. Protective cut-out arrangements. BROOKE, W., and BALDWIN, H. T. April 27, 1946, No. 12771. [Class 38 (v)] An earth leakage protection system for polyphase apparatus has a resistance or inductance star connected to the supply lines, with its neutral point capable of being earthed through a leakage relay so that current through the fault circuit trips a circuitbreaker, the arrangement being such that reclosure is prevented before removal of the fault conditions. Fig. 1 shows a system with an earthed supply neutral which provides protection against unbalanced fault conditions. In the supply cables to the motor B are connected the primary windings V1, W1, X1 of three current transformers which have secondary windings Q1, Q2, Q3 individually connected to overload relays R1, R2, R3 and parallelconnected to a relay coil S1. When contacts S2 of the relay close, the neutral N1 of inductance A is connected to the biassing system of a gas-filled triode J which has its associated supply transformer F with primary winding F1 connected to the live side of the supply circuit-breaker C. As described in Specification 568,336, the closing of switch D connects an inductance P in parallel with a grid bias resistance K so reducing the voltage applied to grid J2 below a critical value, so as to enable the triode to "fire" " and supply current through its anode circuit to the coil C4 to close the circuit-breaker C. If a fault occurs as indicated at 12, the relay S closes contacts S2 which are held closed by a hook S3 engaging in a hinged latch S4. The resistance K and the inductance P are now short-circuited by the path established through a condenser S6, the contacts S2, inductance A, the fault 12, earth, connection Z, and the switch D. The grid J2 now has a higher negative potential in relation to the cathode and the triode ceases to " fire," so that coil - C4 is no longer energized. The circuit-breaker C now trips and cannot be reclosed by opening and closing switch D, as bias resistance K remains short-circuited. When the fault conditions are removed, the reclosure of the circuit-breaker resets relay S by means of a striker S5. In a further earthedneutral system, Fig. 2 (not shown), a core balance transformer supplies the leakage relay coil, and the contacts of this relay when closed and latched under unbalanced fault conditions complete a circuit through the fault and the operating coil of another relay which takes the place of the triode. The opening of the contacts of the latter relay breaks the circuit of the coil C4 of the circuit-breaker causing it to trip and remain open whilst the fault remains.
Patent GB-1091632-A (GB)
Title: Method and apparatus for separating materials
IPC: B01J8/00
Filed: 1965-03-25
Abstract: 1,091,632. Electrostatic separators. SOC. ANON DE MACHINES ELECTROSTATIQUES. March 25, 1965 [March 27, 1964], No. 12783/65. Headings B2H and B2J. Separation of the light powder particles from a fluidised bed containing a mixture of powder particles, (e.g. the separation of carbon from cryolite), is effected by charging the particles in the upper region of the bed and creating an electrostatic field for conveying the charged particles out of the bed on to collecting electrode means 8, 9. The mixture may contain all conductive or all insulating particles. Air is blown upwardly through a perforate plate 2 from a source 3 to fluidise the mixture in a tank 1. The light particles move to the upper region of the bed and when charged by a wire grid 6 follow the escape trajectory indicated for the particles 4, 4'; particles such as 4", which drop back, receive a further charge. A high voltage source 7 is connected to both the grid 6 and collecting plates 8, 9. In a modification, Figs. 2, 3 and 4 (not shown), the mixture is fed continuously by a hopper (20) at one end of the tank and the heavy fraction extracted over an adjustable weir (22) at the other. The collecting electrode means at each side of the tank consist of a grounded vertical plate (31) and three horizontal bars (30) disposed above a collecting trough (28), (29). In another modification, Fig. 5 (not shown) the collecting electrode means consist of a grounded plate electrode (33) extending horizontally above the lower stretch (32a) of a conveyor belt; particles collected on the belt are brushed off into a trough (37). If the particles are insulating in character, the plate electrode (33) may be omitted and the belt made from conductive material. In the embodiments described, the beds may be vibrated or the grid provided with discharge points. Separation may be effected in stages in the tank 1 shown in Fig. 1 by using different voltages in each stage; alternatively, several separators may be employed in series.
Patent GB-679762-A (GB)
Title: Improvements in or relating to coupling devices for pipes or conduits
Inventor: FRASER JOHN
IPC: F16L37/32
Filed: 1950-05-22
Abstract: 679,762. Stuffing-boxes. AVERY-HARDOLL, Ltd. Feb. 23, 1951 [May 22, 1950], No. 12796/50. Addition to 670,666, [Group XXVIII]. Class 122(v) [Also in Group XXVIII] A shell 97 retained in position on a valve member 58 of a pipe coupling (see Group XXVIII) carries round - section packing rings 99, 105, the ring 105 being confined between a flange of the shell and a washer 101 that engages a shoulder 100 and is acted upon by springs 102 to urge the shell outwardly.
Patent GB-102910-A (GB)
Title: Improvements in Air-brushes.
Inventor: ATTWOOD ADOLPHUS
IPC: B05B7/12
Filed: 1916-09-09
Abstract: 102,910. Attwood, A. Sept. 9, 1916. Air-pressure sprayers. - In air brushes of the kind described in Specification 1832/12, the needle valve, needle carriage, spring control, and means connected therewith for controlling the air valve can be withdrawn together from the casing on the release of locking- means, and the air valve and its seating may easily be removed for cleaning. The paint needle a, Fig. 1, is clamped on the split end of the needle carriage o by a nut o<2> and passes through a sleeve, the rear end of which has a collar and slides in the member t attached to the needle carriage o. A spring v closes the needle valve, and another weaker spring t prevents the opening of the air valve. On moving the trigger g, the block p is moved, opening the air valve j in the handle by means of the ball attached to the stem j<1>; and afterwards moving the paint needle, the movement of which is limited by the adjustable stop m<1>. The paint needle &c. can be removed for cleaning by unscrewing the sleeve m. The air valve, with its seating, can be removed by unscrewing the handle and sleeve i. A lateral-spraying device, Fig. 3, may be provided, comprising an open frame w screwed in the air nozzle c and furnished with an adjustable plug x, against which the paint impinges and is deflected laterally.
Patent GB-930513-A (GB)
Title: Treatment of petroleum hydrocarbon mixtures
Inventor: WEISZ PAUL BURG
IPC: C10G69/04
Filed: 1961-01-04
Abstract: Cyclic hydrocarbon concentrates are obtained from hydrocarbon mixtures also containing acyclic hydrocarbons by (a) treating under catalytic cracking conditions with a crystalline zeolite having a pore structure permitting entry of normal aliphatic hydrocarbons but excluding hydrocarbons having a larger minimum dimension whereby the normal hydrocarbons are selectively cracked to olefinic gases and (b) subjecting the resultant mixture, preferably after removal of gases, to a "deisomerisation" treatment under catalytic isomerisation conditions whereby iso-aliphatic hydrocarbons are converted to normal hydrocarbons and (c) recycling the "deisomerisation" product to the selective cracking step and repeating the treatment on a continuous cyclic basis to yield a concentrate of cyclic hydrocarbons.  Suitable selective cracking conditions employing a 5  molecular sieve as catalyst are 700 DEG -1,200 DEG F., subatmospheric to several hundred atmospheres pressure and a LHSV of 0,2-4.  The deisomerisation is effected conventionally using a FriedelCrafts catalyst or a Group 8 metal on an acidic oxide support at 650 DEG -900 DEG F., 50-1,000 p.s.i.g., with a LHSV of 0,5-20 and a hydrogen to hydrocarbon mol. ratio of 0,5-20.  The process may be applied to feeds boiling in the range 200 DEG -600 DEG F. and the products may be used to obtain aromatics, as solvents or, after hydrogenation, as jet fuels.
Patent GB-252708-A (GB)
Title: Improvements in processes for producing synthetic pig iron
IPC: C21C1/00
Filed: 1926-05-19
Abstract: 252,708. Frankl, M. May 29, 1925, [Convention date]. Purifying and refining. - In a process for obtaining pig iron and steel from turnings and scrap steel, the turnings are mixed with solid fuel and a silicon-containing substance such as sand are melted in an acid furnace a by gases formed by the combustion of the fuel bv air enriched with oxygen obtained as described in Specification 246,172, [Class 8 (ii), Air and gases, Treating &c.], and introduced at b by a nozzle c, carbon dioxide being first formed and then converted into carbon monoxide by passing through incandescent fuel in the furnace, and the scrap steel is melted in a basic furnace i by gases passing by a pipe h from the furnace a into the furnace i and burnt with the aid of air enriched with oxygen. The acid slag is discharged from the furnace a at g, and the iron from the furnace i flows by the passage k where it mixes with the iron produced in the furnace a The mixture of iron flows by the channel e into a collector f where it is desulphurized by the slag which flows by a channel m from the furnace i. Air may be blown into the collector f by the tap n before the iron is purified, and the purified iron is tapped at n, the slag being removed through the opening o.
Patent GB-665458-A (GB)
Title: Improvements in or relating to brakes for cycles
IPC: B62L1/12
Filed: 1948-05-11
Abstract: 665,458. Cycle brakes. SOMVILLE, C. May 11, 1948 [Feb. 17, 1948], No. 12885/48. Class 136(i) A cycle brake comprises two crossed levers 1, 2 pivotally connected at 3 about a common fixed axis, the levers carrying brake shoes 4, 5 at one end and having at their other ends symmetrical extensions on each side of the axis 3, a spring 20 pressing each of the levers 1, 2 in the direction of the wheel, a cable 16 interconnecting the outer ends 17, 18 of the extensions and connected intermediate its ends to an element 6 controlled by the brake lever and adapted to be moved thereby towards or away from the pivotal axis 3 in the plane of the levers to effect operation of the brake. The element 6 consists of a block sliding in a guide 12 and carrying a roller 15 over which the cable 16 passes. A cable 19 connects the block 6 to the brake lever.
Patent GB-554369-A (GB)
Title: Improvements in luminairs
IPC: F21V3/00
Filed: 1942-09-14
Abstract: 554,369. Luminairs. HOLOPHANE. Ltd., (Holophane, Co., Inc.). Sept. 14, 1942, No. 12936. [Class 75 (ii)] A luminair having a light source extending to or concentrated at two points 11, 12 on opposite sides of its axis B-B of symmetry is fitted with a lens 13 of the Fresnel type formed with prisms shaped so that all rays such as 14<SP>1</SP>, 15<SP>1</SP> from the source 11 falling on the lens 13 to the left of the axis B-B and all ray such as 14, 15 from the source 12 falling on the lens 13 to the right of the axis B-B are refracted so as to emerge as rays 22<SP>1</SP>, 21<SP>1</SP>, 22, 21, parallel to the axis B-B, while the rays 17', 18<SP>1</SP> and 17, 18 crossing the axis emerge as two parallel divergent beams. If the points 11, 12 are diametrally opposite points on a ring filament of a high wattage lamp the lens may consist of a round plate formed by the revolution of the diametral strip about the axis B-B. If the source of light consists of luminous strip formed by two tubular lamps the lens consists of a plate formed by moving the strip shown at right angles to its plane. The lens so formed comprises light refracting elements whose refracting power decreases from the middle to a region of zero refracting power and beyond this region increases in refracting power to a value substantially greater than that at the middle.
Patent GB-803171-A (GB)
Title: Improvements in and relating to detectors of electrically conductive bodies in continuously travelling strip material
IPC: G01V3/06
Filed: 1956-04-27
Abstract: 803,171. Locating conductors. COMPTOIR DE L'INDUSTRIE COTONNIERE, ESTABLISSEMENTS BOUSSAC. April 27, 1956 [Feb. 3, 1956], No. 12944/56. Class 37. In apparatus for detecting conductive bodies in continuouslytravelling strip material, a sudden variation in resistance due to the presence of such a body varies the grid potential and hence the anode current of a hard valve, causing a thyratron to fire and so complete a circuit containing a relay which operates to stop the travel of the material, whereas a gradual variation in resistance due, e.g., to changing hygrometric conditions will not trigger the thyratron. As shown, a sudden reduction in resistance due to a metal particle in fabric 28 passing between metal rollers 26, 27, in a textile machine, causes a capacitor 34 to discharge through a resistor 13 placed between the H.T. negative and the control grid 12 of a pentode 9, thus triggering a thyratron 15. Relay 20 pulls up, disconnecting from its supply the winding 25 of the controller of the textile machine which stops, and illuminating " alarm " lamp 23 in place of " normal lamp 22. To reset the arrangement, the thyratron circuit is interrupted by depressing a push-button 35 or, after removing a bar 36, a button 37.
Patent GB-1403171-A (GB)
Title: Engineers and the like tools
IPC: G01B3/00
Filed: 1973-03-17
Abstract: 1403171 Drawing instrument JAMES NEILL HOLDINGS Ltd 5 April 1974 [17 March 1973] 12947/73 Heading G1X [Also in Division B6] In a single instrument is provided a protractor 3, a centre head i.e. an internal 90 degree angle and a square head i.e. external 45 degree and 90 degree angles. The instrument comprises a protractor 3 having a rotatable part mounted on a body 1 and provided with a groove and a screw clamp 8 to locate and secure a rule 7. A recess 11 constitutes the internal 90 degree angle and is positioned such that a rule 7 located on the rotating protractor 3 can be positioned so as to bisect the internal 90 degree angle. Edge 12 provides the 45 degree angle relative to the lower edge (13) Fig. 2 (not shown) of the body whilst one of the upright edges of the body 1 with the surface 13 constitutes the external 90 degree angle. The instrument may be provided with two spirit levels 6, 14 as shown or with a single multi-directional level (15), fig. 4 (not shown). The graduations for the protractor may be provided on the rotatable part or on the adjacent body portion, the other of these elements being provided with an index mark. The graduations may extend over 180 degrees or more.
Patent GB-217017-A (GB)
Title: Improvements in locks
IPC: E05B21/00
Filed: 1923-05-15
Abstract: 217,017. Jordan, E. May 15, 1923. Locks, wards for; bolts. -A lock bolt is built up from a number of plates permanently attached together, some only of which have recesses or projections for engagement by the key, the others requiring corresponding cutting of the key before the key can operate the bolt. By varying the relative positions of the plates during manufacture of the bolt, a series of different bolts can be made from a. given number of standard plates. Fig. 5 shows three plates 1, 2, 3 which when riveted together form the bolt 19 of the lock 10. The plate 3 is unrecessed, the plate 2 has a small recess 4 and the plate 1 has the talon 5 by which the key shoots or retracts the bolt. Levers 16 co-operating with a stump 18 on the bolt are added. The necessary cutting of the key bit to effectively operate the bolt 19 on account of the differently shaped edges of the plates 1, 2, 3, lends additional security to the lock without increasing the number of levers and hence the thickness of the lock.
Patent GB-1370911-A (GB)
Title: Predictive controller for blending systems
IPC: G06J1/00
Filed: 1972-08-04
Abstract: 1370911 Electric analogue simulating ASSOCIATED PORTLAND CEMENT MFRS Ltd 4 Aug 1972 [4 May 1971] 12951/71 Heading G4G An electric analogue circuit for simulating a fluid-flow system, such as a cement blending plant, comprises series-connected integrating circuits A, B representing successive tanks in the system. With appropriate initial conditions in registers 4 and 6, an input representing a parameter of the input material is fed into the first integrator and the output of the last integrator represents the value of the same parameter at the output of the system. A desired output can be applied to a register 8 and compared at 16 with the actual output and a variable ramp generator 14 is applied to the input under the control of a resetting line 20. The input is varied until the desired output is achieved and at this time the input is fed via gate 18 to an output register 12. This register 12 can be coupled to the system to provide automatic control.
Patent GB-586015-A (GB)
Title: Improvements in fish dressing machines
IPC: A22C25/14
Filed: 1944-07-06
Abstract: 586,015. Fish-dressing machines. ARENCO AKTIEBOLAG. July 6, 1944, No. 12959. Convention date, July 13, 1943. [Class 28 (ii)] In a fish heading and gutting machine in which a conveyer 11-12 carries each fish to a disc heading knife 14, the fish is correctly positioned longitudinally by a spring-pressed plate or plates 40 above the conveyer to press the tapering rear body portion of the fish and so urge its snout against a gauge plate 13. A number of such plates 40 are arranged in echelon so that small fish may be worked up to the gauge plate. The fish then moves along with its snout on the gauge plate 13, Fig. 9, until its relatively firm gills are engaged by an inclined spring-pressed displacing plate 50 whereby the head is more accurately positioned by the lower edge 51 engaging the gills before meeting the heading knife 14. After parting the heading knife the body is again moved longitudinally by the pressing action of other spring-pressed plates 40 which press the body against an inclined groove fixed plate 44 whereby its cut end approaches the nip of cutting rollers 17, 18. At this stage, the fish body is pressed on by one of the pressers 30 of a wheel 23 so that part of the gut is made to protrude end be engaged and drawn out by the rollers 17, 18 while the fish is held back by another spring- pressed plate 40 near the press wheel 23. The roll and milt not adhering to the intestine remains inside the body. The chain-driven press wheel 23 is carried by an arm 25 yieldingly mounted by spring 28, 29, the tension of which can be adjusted by nuts 32, 33 to vary the pressure of the head 30 on the fish. Fig. 6 shows one of the pressure bars 40 with blade spring 42 yieldingly secured to a beam 41 fixed above the conveyed chains.
Patent GB-1379373-A (GB)
Title: Hydraulic brake system for a trailer
IPC: B60T13/16
Filed: 1973-03-19
Abstract: 1379373 Fluid pressure brakes ROBERT BOSCH GmbH 19 March 1973 [25 May 1972] 12993/73 Heading F2F A trailer braking system 10 comprises two 2-way electromagnetic valves 52, 56 located in a brake valve 14, controlled through an electronic controller 53 by a signal, derived from a generator 61, corresponding to the braking force from the mechanical brake linkage of a tractor. When the tractor brake 13 is off, valves 52, 56 are spring biased open so that fluid flows therethrough to a reservoir 26 from a pump 25 by way of line 24, valve 14 inlet 23, an orifice 48 and a throttle 47 in a hollow slide valve member 15, duct 36 and pipe 38. Because of the pressure difference across throttle 47 member 15 is forced leftwardly whereby a land 44 fully opens communication from inlet 23 to outlet 28 leading to an hydraulic load 31, a second land 45 interrupts flow to an outlet 33, and a third land 46 restricts communication with duct 36. When the tractor brake 13 controller 53 receives a signal corresponding to the degree of mechanical braking and also receives a signal from a signal generator 58 indicating zero trailer braking pressure. Controller 53 then closes on the electromagnetic valves 52, 56 so that the throttle 47 flow ceases and a spring 14 moves valve member 15 rightwardly. Land 44 restricts flow to load 31 and land 45 opens up communication with trailer brake 35 through outlet 33. The pressure in pipe 24 operates generator 58 which feeds a signal back to controller 53. Once the values indicated by the generators 58 and 61 correspond the second magnetic valve 56 is opened, a check valve 49 preventing pressure drop in pipe 34. If the brake 13 is released the pressure value set by the mechanical brake indicated at the generator 61 falls below that indicated by the generator 58. Controller 53 then opens valve 52 allowing the trailer brake to discharge to the reservoir 26 through a return pipe 51. In a modification a four way, three position electromagnetic valve is used instead of the two way valves.
Patent GB-131313-A (GB)
IPC: F23D11/10
Abstract: 131,313. Bellon, G. A. P. Aug. 16, 1918, [Convention date]. Spray burners.-In a liquid fuel burner, the flow of fuel is controlled by adjusting the air pressures in front of and behind the fuel delivery pipe and without the use of valves in the fuel delivery system. Air is supplied to the burner by an inlet P, and part of it passes by conduits 16 and 15 to a chamber 14 having a projecting nozzle 13. Another part of the air may enter a tube 11 by an orifice 12. A member 10 which is integral with conduits 15 and 16, nozzle 13 and the tube 11 may be moved axially in a bearing 23 by means of a handle 20 and screw-threaded spindle 17. By rotation of the handle 20, the orifice 12 is uncovered and the air entering this orifice exerts a back pressure on the air current issuing from the nozzle 13 so that the force of air with which liquid fuel from the jet nozzle 8 is atomized and projected through the pipe 11 is controlled. Any excess of liquid fuel falls through a passage 9 into a chamber C<1>, and is returned to the reservoir. Air passing through an annular opening 29 in a diaphragm 28 assists the atomization of the fuel.