baber/WOPTO huggingface dataset:
Patent GB-785912-A (GB)
Title: Improvements in or relating to methods of producing luminescent materials
IPC: C09K11/66
Filed: 1956-05-07
Abstract: 785,912. Luminescent materials. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 7, 1956 [May 10, 1955], No. 14067/56. Drawings to Specification. Class 39(1). A luminescent material is prepared by mixing compounds of calcium, magnesium, silicon and lead and, if desired, zinc and/or barium, and heating the mixture in an oxidizing atmosphere to a temperature between 900‹C. and 1200‹C. for from one to five hours, the amounts of the compounds being such that the proportions in the mixture satisfy the following atomic ratio conditions : Ca + Ba / X lies between 0À05 and 0À45, Mg + Zn / X between 0.05 and 0À60; Si/X between 0À35 and 0À90; Pb/X between 0À0003 and 0À1; Mg / Mg + Zn between (or equal to) 0À2 and 1À0, and Ca / Ca + Ba between (or equal to) 0À2 and 1À0 where X is the total Ca + Ba + Mg + Zn + Si. Fluorides of the alkaline earths and/or leads in an molar amount of fluoride not exceeding one tenth of the total of Ca, Mg and Si, may be used as a flux. One of the compounds employed may be an oxide or, except in the case of silicon, a nitrate or carbonate. Specific examples are given . The resulting materials when irradiated with light of a wavelength of 2357A‹ emit radiation in the range 2800‹-4000‹A and they may be used in luminescent screens for lowpressure mercury vapour discharge tubes.
Patent GB-853407-A (GB)
Title: Electrically driven screw driver
IPC: H04N3/08
Filed: 1959-04-24
Abstract: 853,407. Mixing and agitating appliances. FRICKERT, H., and WENNINGER, R. April 24, 1959 [April 24, 1958]. No. 14082/59. Class 86 [Also in Group XXII] A battery-operated electrically driven screwdriver, stirrer or like tool comprises a casing 6 having batteries 5 and a motor 15 arranged therein, the motor being connected to a tool holder 11 through reduction gears 1-3 and a friction clutch 12. The holder 11 has projections 10 which engage a cage 9 which is radially movable by a button 7. In operation, the button 7 is depressed, the cage is disconnected from the holder 11 and closes a motor switch 8. The motor then drives the tool 4 until the torque on the tool is such that the clutch 12 slips. The button 7 is then released and the spring 20 lifts the cage 9, which then engages the projection 10 and opens the contacts 8 to allow the stirrer to be manipulated as a single entity. A pole changing switch 19 allows the rotation of motor 15 to be reversed. The batteries may be of the dry-cell type, or of the nickel-cadmium type, which may be recharged in position from an electricity supply.
Patent GB-258521-A (GB)
Title: Improvements in or relating to matrix setting and type linecasting machines
IPC: B41B7/18
Filed: 1926-06-03
Abstract: 258,521. Typograph Ges., and Uhthoff, E. June 3, 1926. Distributing matrices.-In machines in which the matrices move on endless wires, the matrices are returned to the magazine after the casting by two sets of pushers 5, 6, Figs. 1 and 3, the pushers 5, which rotate about a spindle 4, serving to carry the matrices 1 over the curved portions of the wires 2, and the pushers 6 serving to carry them over the straight portions. The pushers 5 project from.a rod 9 supported by links 7, 8 from the spindle 4, which is reciprocated through an angle of 180‹. The rod 9 rests upon a helical slideway 10, the pitch of which is equal to that of the guide wires 2. In order that the pushers 5, on their return movement, may not strike the matrices of the next line to be delivered, they are retracted as they approach the casting point A, and are projected again behind the matrices. For this purpose, the links 7, 8, which carry the rod 9, are pivoted to sliding bars 13, 14, Fig. 5, which can move vertically on the spindle 4. A spring 17, which is adapted to raise the bars, is placed under compression, as the spindle rotates, by means of a collar 20 connected by a link 21 to the link 7. The rise of the bars 13, 14 is normally prevented by a latch 24, and a second latch 27 engages a collar 18, in order to hold the spring in compression. During the return movement of the rod 9, the latch 24 is withdrawn, and the bars 13, 14 are raised by the spring 17, so that the rod 9 and the pushers 5 are retracted. After further rotation of the spindle, the latch 27 is withdrawn, so as to release the spring 17. The bars 13, 14 thereupon fall, and the pushers 5 are projected behind the matrices. The second set of pushers 6 is reciprocated along a rail 30 by an endless chain 42, and is retracted at the forward end of the stroke, in order to clear the matrices delivered by the pushers 5. For this purpose, the rail 30 is pivoted at its rear end 31, and its forward end is pushed back against spring pressure by a cam device on the spindle 4.
Patent GB-1065415-A (GB)
Title: Improvements in transistor signal translating circuits having automatic gain control
IPC: H03F3/193
Filed: 1964-04-06
Abstract: 1,065,415. Transistor amplifier circuits. RADIO CORPORATION OF AMERICA. April 6, 1964 [April 19, 1963], No. 14107/64. Heading H3T. Cross modulation with interfering signals in a gain controlled insulated gate field effect transistor amplifier is reduced by connecting the drain of the transistor to the source electrode of a further similar transistor, for example to form the cascode amplifier shown, and by applying the automatic gain control signal to the input transistor in such a polarity as to increase the current flow as the signal amplitude increases. The field effect transistors of the radio receiver shown have their substrates 88, 90 earthed and a further gain control signal is applied to the gate 82 of the second transistor in such a sense as to tend to reduce the current as the signal increases. This second signal may be delayed with respect to the first. In Fig. 5 (not shown) the second transistor 90 is not gain controlled, its gate 82 being connected through a resistor to the common connection 84 between the transistors.
Patent GB-675629-A (GB)
Title: Improvements in automatic fire-arms
IPC: F41A3/72
Filed: 1950-06-06
Abstract: 675,629. Automatic firearms. HISPANIOLA CORPORATION. June 6, 1950. [June 11, 1949] No. 14123/50. Class 119. The breech-block 2 of an automatic firearm contains the spring-urged striker 3 and has a transversely stepped bore for the sideways introduction of a retarding lever 4 which has arms of unequal length and which is made in one piece, the shorter arm being arranged in the path of a shoulder of the receiver so that, on recoil, the lever is rotated and its longer arm pushes the striker rearwards with respect to the recoiling breech-block. In the construction shown, the lever 4 has one arm 4b adapted to engage the fixed abutment 8, a second arm 4a for engaging the rear face of an opening 7 in the striker 3, and a third arm 9 which by engaging with the breech casing 1 serves to hold the lever in its striker-retracting position at all times when the lever is to the rear of the abutment 8. The striker 3, which is circular in section, carries the firing pin 5 in aT-shaped recess is acted upon by a return spring, and is fitted with a cotter 6 which by working in a slot, shown dotted, in the breech-block limits the relative movement between breech-block and striker. A part of the cotter extends into the path of a cocking handle.
Patent GB-243996-A (GB)
Title: Improvements in or relating to shades or deflectors for electric lamps
IPC: F21V7/05
Filed: 1925-06-02
Abstract: 243,996. Cox, F. June 2, 1925. Shades and reflectors. - A billiard table or like lamp shade comprising a flat elongated rectangular top or roof a and downwardly and outwardly sloping sides b and ends c is provided with interior translucent light diffusing and reflecting vertical transverse partitions extending the full depth from the top to the bottom of the shade so as to screen the eyes of a player from the electric lamps f contained in each compartment of the shade. The roof, sides and ends may be made of cardboard, three-ply wood, thin sheet metal or other sufficiently light and strong material, and the transverse partitions may be composed of a light fabric d such as satin stretched taut upon wooden or other supporting frames e which also constitute stiffening braces for the sides b. The lamps f are carried by holders g secured to the roof a and the shade, which is provided with ventilation holes k, may be raised and lowered by means of flexible electric leads h. According to the Provisional Specification the roof is provided with clearance holes for the electric leads to pass through and separate means are provided for suspending the shade.
Patent GB-1272024-A (GB)
Title: Then film resistor
IPC: H01C1/14
Filed: 1970-03-24
Abstract: 1,272,024. Resistors. ANGSTROHM PRECISION Inc. 24 March, 1970 [27 March, 1969], No. 14281/70. Heading H1S. A thin film resistor comprises a resistive track 30 deposited in a groove in the upper surface of a body 10 of ceramic or glass material, the resistance being adjustable by abrading the upper surface of the block to reduce the crosssectional area of the resistance material, and the film being connected to terminal pads, 22, 20 (Fig. 2) by a metalized coating 18, the pads being formed by dip soldering. The resistor may be encapsulated in epoxy (Figs. 5 and 6, not shown) or the resistance film and the metalized portions may be protected by a glaze. The pads are arranged so as to connect to printed circuit conductor 24 and 28 of a board 26. The resistive film may be formed in a groove having a sinuous shape or having arcuate or other cross-sections.
Patent GB-280454-A (GB)
Title: Improvements in or relating to radiation pyrometers
IPC: G01J5/40
Filed: 1927-05-27
Abstract: 280,454. Schwartz, A. May 27, 1927. Pyrometers. - In a radiation pyrometer employing a bimetallic spiral to receive the radiation, errors due to variations in atmospheric temperature are automatically compensated by means of a second bimetallic spiral arranged to displace either the scale or the support for the measuring spiral when such variations occur. In the form shown the bimetallic, spiral E receiving the focussed radiation carries a pointer H moving over a scale F which is rotatably supported on a holder C. The compensating coil A is secured at one end within the telescope tube G and at its free end B engages in a notch in the scale F so that its expansion and contraction with variations in atmospheric temperature cause the scale to rotate. The object glass of the telescope may be surrounded by an annular window through which some of the rays from the source of radiation pass in order to illuminate the scale.
Patent GB-1457884-A (GB)
Title: Liquid dispensing apparatus incorporating a sensor responsive to the delivered liquid level
IPC: B67D7/46
Filed: 1973-03-26
Abstract: 1457884 Filling tanks L DILGER 19 Feb 1974 [26 March 1973] 14317/73 Heading B8T Apparatus for dispensing liquid comprises a delivery nozzle 13, and means for regulating the flow of liquid to the nozzle, means operable to initiate the flow of liquid, a first detector 20 responsive to a predetermined level relative to the nozzle of delivered liquid to generate a first electric signal, and means responsive to said first signal to inhibit delivery of liquid by the regulating means for the duration of the signal and to terminate delivery of liquid to the nozzle when said duration exceeds a predetermined value. The means for regulating the flow comprises a pump/metering system 11 actuated by a control means 22. The control means comprises a discriminator consisting of an input circuit 40, AND gates 42, 43 and a delay gate 44, and a sequencing means for the flow rate consisting of a shift register 32 and a bi-stable switch 31. When the detector 20 detects liquid, it triggers the switch 31 into its reset position and delivery ceases. If a surge rather than true level has been detected, then after a predetermined time, the delay gate 44 transmits a signal via the AND gate 42 to trigger the bi-stable switch into its set position thus shifting the register 32 through one position to produce an output 37 which corresponds to a reduced flow rate. If a second surge occurs, a similar process takes place and a dribble flow rate is established corresponding to output 38. The delivery is permanently cut off by the AND gate 43 transmitting a signal from the detector 20 to the register 32 after the predetermined time, indicating a full tank, and thereby shifting the register 32 to its initial position I, with no output from 36, 37, 38, thus ceasing the delivery. A second detector 50 may be added, primarily to detect when the container is full.
Patent GB-585225-A (GB)
Title: Improvements in or relating to measurements in ultra high frequency electrical systems
IPC: G01R19/28
Filed: 1944-07-28
Abstract: 585,225. Coil-less resonators. FALLOON, S. W. H. W., BROWN, R. H. J., and WRIGHT, C. S. July 28, 1944, No. 14488. [Class 40 (iii)] - [Also in Group XXXVI] Apparatus for the measurement of standing wave voltages on a transmission line comprises a potential divider slidable along the line and formed by a stub line of quarter wave length and short-circuited at its free end, with a voltage measuring device including a rectifier connected to the stub at a predetermined distance from the short-circuited end. Alternatively the rectifier may be slidable along the line, the stub line being omitted. The main transmission line comprises a coaxial line formed by an inner conductor 1, Fig. 1, and an outer conductor 2, which is slotted to enable the inner conductor 3 of a stub line to be slid along the main line 1, 2 to measure standing wave voltages at different locations. The outer conductor 4 of the stub line is in intimate contact with the outer conductor 2, and the free end of the stub is short-circuited at 5. The length of the stub is one quarter of the wave-length of the energy in the main line 1, 2 and the voltage at a selected point is measured by means of a rectifier, which may be a crystal rectifier or a miniature diode with its anode lead 6 connected to the inner conductor 3 and its cathode 7 connected to the outer conductor 4 by by-pass condensers 8. The cathode 7 is connected to the core 9 of a screened cable which has its sheath 10 connected to the outer conductor 4 of the stub. The core 9 is connected through a meter 11 to a potentiometer 12 by means of which the peak voltage applied to the diode may be determined, which voltage is a known fraction of the voltage at the tapping point in the line 1, 2. When the peak standing wave voltages in the line 1, 2 are low enough to be applied to the rectifier, the stub line need not be used and the rectifier or diode may be inserted directly into the main transmission line so as to slide along it with its anode lead in contact with the inner conductor 1 and its cathode lead projecting through a slot in the outer conductor 2 and connected to one end of a screened cable, the sheath of which is in contact with the outer conductor 2. Instead of inserting the diode directly into the line or into the stub, it may be located at the far end of a half wave-length of screened cable 14, Fig. 2, with its'anode connected to the central conductor. The free end of the screened cable has its central conductor extended as a probe 15 which projects into the coaxial line under test through a slot 16 in the outer conductor.
Patent GB-941890-A (GB)
Title: Plant-thinning apparatus, particularly for beetroot
IPC: A01B41/04
Filed: 1961-04-21
Abstract: 941,890. Agricultural implements. G. H. PALM. April 21, 1961 [June 15, 1960], No. 14515/61. Heading A1B. Plant thinning apparatus comprises a landwheel 8 coupled to a thinning disc 14 by means of a flexible shaft 10 or a shaft equipped with a Cardan joint. As shown the disc 14 is mounted on a pivoted member 17 so that the position of the disc may be adjusted. The landwheel comprises a disc on which members 9b are fixed. The disc 14 includes thinning tools which are adjustably mounted and may -be replaced by arcuate members 33. For heaping soil around the plants plates 28 with pins 29 are rotatably mounted behind the disc 14 and rotate by contact with the ground.
Patent GB-789055-A (GB)
Title: Curable dispersions of ethylene polymers
IPC: C09D123/34
Filed: 1956-05-10
Abstract: Coating compositions curable at ordinary temperatures, comprise an aqueous alkaline dispersion of a chlorosulphonated polyethylene, a dispersed polyvalent metal compound curing agent and an opacifying pigment.  The chlorosulphonated polyethylene, preferably containing 0.4 to 3 per cent sulphur and 15 to 45 per cent chlorine, dissolved in an organic solvent, e.g. carbon tetrachloride and toluene, is emulsified in water, the solvent removed by vacuum evaporation, and the dispersion then made alkaline by the addition of borax, trisodium phosphate, tetrapotassium and tetrasodium pyrophosphate and the alkali metal hydroxides and carbonates.  Suitable dispersing agents are polyoxyethylene sorbitan monolaurate or monooleate, dodecyl phenylpolyglycol ether, the sodium salts of the half sulphuric acid ester of 2-methyl-7-ethyl undecanol-4 and of sulphonated dinaphthylmethane, high molecular weight carboxylic acid esters, alkyl aryl polyether alcohols and sulphonated long-chain alcohols. Thickening agents, e.g. polydioxolanes, partially hydrolysed polyvinyl acetate, casein, methyl cellulose and natural colloids, sequestering agents, e.g. sodium silicate, tetrapotassium and sodium pyrophosphate, and trisodium phosphate may also be present.  The curing agents are inorganic compounds of polyvalent metal such as magnesium, calcium, barium, zinc and lead oxides, hydroxides and salts including the basic salts of weak acids, and the pigments may be zinc oxide and sulphide, barium carbonate and sulphate, titanium dioxide, lithopone, zinc, lead, and barium chromates, red lead, ferric and chromic oxide and carbon black and may be added in a preformed aqueous dispersion.  Fillers such as asbestos and mica, lakes and toners, anti-mould and flatting agents, and accelerators such as benzothiazyl disulphide, 2-mercaptoimazoline, zinc dibutyl dithiocarbamate and diphenyl guanidine may also be present.  The coating may be cured at from 5 DEG  to 40 DEG  C. and gives satisfactory weatherresistant films on wood or concrete. Specifications 524,414, [Group XI], and 591,058, [Group IV], are referred to.
Patent GB-143927-A (GB)
Title: Improvements in or relating to apparatus for tilting the troughs of kneading machines and other vessels
IPC: A21C1/14
Filed: 1920-05-29
Abstract: 143,927. Cannstatter Misch - und Knetmaschinen-Fabrik, Cannstatter Dampf-Backofen-Fabrik Werner & Pleiderer. Jan. 15, 1917, [Convention date]. Discharging by tilting container.-In tipping- apparatus more particularly suitable for the troughs of kneading-machines in which a fluidoperated piston effects the movement of the trough, the speed of the trough towards its limiting positions is automatically governed by elements moving with the trough and relatively to co-operating elements in connexion with the fluid pressure supply to the piston. An arm 6, Fig. 1, on the kneading-trough 5 is pivoted to the upper end of the piston-rod 4 of a piston 2 which works within a cylinder 1 pivoted at the lower end, and a segmental piece 8 on the wall of the trough carries on its outer periphery four cams 9, 10, 11, 12. A three-armed lever 14, 15, 18 is pivoted to the wall of the trough at a point 13 outside the segment 8, the free arms 14, 15 carrying cams 16, 17 while the end of the arm 18 is pivoted to a bar 19 connected to a slide-valve 21, Fig. 3, movable within a casing 20 supplied with fluid by a pipe 24. To tilt and empty the trough, the valve 21 is moved to the left by means of the hand-lever 22 until the cam 16 is in contact with the segment 8, whereupon liquid passes by the pipe 25 to the cylinder 1 below the piston 2, and the liquid above the piston escapes by pipes 27, 28. The cam 11 is arranged on the segment 8 so that it moves the valve 21 to the right as soon as the centre of gravity of the trough has passed over and beyond the axle 7, thus preventing the trough from falling too fast and keeping its velocity approximately constant. When the trough is completely tilted, the cam 9 contacts with the cam 16 and the valve 21 is returned to its intermediate position. To restore the trough to its initial position, the valve 21 is moved to the right by means of the lever 22 until the cam 17 is in contact with the segment 8, whereupon liquid passes by a pipe 26 to the upper part of the cylinder and the liquid below the piston escapes by pipes 25, 27. As the trough returns, the cam 12 depresses the cam 17 and the valve 21 is moved to the left, thereby again reducing the area of the inlet and outlet passages in the casing 20 and retarding the trough. When the cam 10 contacts with the cam 17, the valve 21 is returned to the middle position.
Patent GB-627905-A (GB)
Title: An improved hydrocarbon synthesis process
IPC: C07C1/04
Filed: 1947-06-03
Abstract: Hydrocarbons, together with oxygenated derivatives such as alcohols, ketones, and acids, are synthesized from a mixture containing carbon monoxide and hydrogen, wherein the ratio H2 : CO is not less than 3, and is preferably 4-6 and the carbon dioxide concentration is maintained at a relatively high level so that the ratio H2 - CO2 : CO+CO2 is not in excess of 2, preferably not in excess of 1.5.  Such feed mixtures may be produced from hydrocarbons, particularly methane or natural gas, by treatment with steam and carbon dioxide at about 1300-1600 DEG  F. in presence of such catalysts as nickel, e.g. 27 per cent nickel oxide and 3 per cent magnesia on kaolin, or by treatment with oxygen in a ratio of O2 : CH4 between 0.7 and 1.1 to 1 at about 2000-2400 DEG  F., with or without the addition of water and carbon dioxide.  Feed gases containing methane 30-50, carbon dioxide 20-60, and steam 20-60 per cent; for example 40, 40, and 20 per cent respectively, are passed over nickel at 1300-1600 DEG  F., and the product or part thereof, according to the desired analysis, treated with excess of steam in presence of red iron oxide at 800-1000 DEG F. and 1-100 atm. to yield a synthesis gas which is converted at 500-750 DEG  F. and 10-50 atm. in presence of an iron catalyst. Unreacted gas may be circulated to the first conversion stage or to the synthesis zone. In an example the H2 : CO ratio is 4 : 1 and the feed contains 16 per cent CO2.
Patent GB-1415921-A (GB)
Title: Means for melting,holding and tapping metals or metal alloys
IPC: B22D41/01
Filed: 1973-03-28
Abstract: 1415921 Channel type induction furnace ALLMANNA SVENSKA ELEKTRISKA AB 28 March 1973 [29 March 1972] 14845/73 Heading H5H [Also in Division F4] A channel type induction heated melting furnace 11 is connected to a channel type induction heated holding furnace 23 located at a lower level through a channel 22 and pressurizing gas can be fed to the holding furnace 23 to tap metal from an outlet 25 branching from the connecting channel. The pressure in the holding furnace may be automatically controlled to maintain a desired depth of the melt in the melting furnace. With the tapping outlet closed, the level of the melt in the upper furnace may be raised for the removal of slag through an outlet 30. The lid and shoot 27 may be replaced by a cover allowing an ingot to be lowered into the melting furnace (Fig. 3). The form of the channel 22 prevents the passage of slag into the holding furnace.