baber/WOPTO huggingface dataset:
Patent GB-407264-A (GB)
Title: Improvements in and relating to temperature responsive devices for controlling electrically operated devices
IPC: G08B17/06
Filed: 1933-09-01
Abstract: 407,264. Thermal switches. PERKS, T. E., Pinehurst, Cokes Lane, Chalfont St. Giles, Buckinghamshire. Sept. 1, 1933, No. 24293. [Class 38 (v).] A temperature-responsive device for controlling electrically-operated devices, as, for example, fire-alarm or fire-extinguishing apparatus, comprises a hollow casing consisting of two parts 1, 2 separated by insulating material 3 and containing a metallic pellet 4 which is caused to adhere to the wall 2. The pellet is of a metal or alloy adapted to melt at the temperature at which it is desired the device should respond, and is applied to the wall when softened under the action of heat. Alternatively the pellet may not be readily fusible, but may be caused to adhere to the wall 2 by means of sealing wax, adhesive, or fusible metal. The casing is shown connected to a household electric bell system. On a predetermined temperature being reached, the pellet falls and bridges the two parts of the casing, completing a circuit to cause the operation of the bell 5.
Patent GB-1503538-A (GB)
Title: Reactor for production of methane
IPC: B01J8/02
Filed: 1975-06-05
Abstract: 1503538 Catalytic reactor for preparing methane METALLGESELLSCHAFT AG 5 June 1975 [7 June 1974] 24316/75 Heading C5E [Also in Division B1] A reactor for catalytically converting gases which contain CO, CO 2 H 2  and H 2 O vapour into CH 4  at a temperature of 250-550‹ C. under a pressure of 10-80 kg./cm.<SP>2</SP> comprises a substantially cylindrical outer shell 1 with a gas inlet 2 and outlet 3 at opposite ends, an inner substantially cylindrical vessel 6 which is impermeable to gas adjacent inlet 2 and defines an annular flow passage with shell 1 and has openings 6a for gas, a centrally mounted perforated gas collecting tube 8 defining with vessel 6 an annular catalyst chamber containing 60-90% by volume of the entire catalyst as a first bed 7, and at least one additional catalyst bed 11 or 16 arranged between vessel 6 and outlet 3, the arrangement being such that the gases from inlet 2 are constrained to flow substantially radially through bed 7 into tube 8 and substantially to the axis of the reactor from tube 8 through catalyst 11 or 16 to outlet 3.
Patent GB-738236-A (GB)
Title: Improvements in the deposition of chromium on antimony or antimony alloy surfaces
IPC: C25D5/34
Filed: 1953-09-03
Abstract: 738,236. Electrodeposition of chromium. GENERAL MOTORS CORPORATION. Sept. 3, 1953 [Sept. 22, 1952], No. 24349/53. Class 41. A method of depositing chromium on a surface of antimony or antimony-base alloy comprises immersing the surface in a hot chromic acid plating bath for a period of not more than one minute and subsequently electrodepositing chromium on the surface. The bath in which the surface is immersed may be the same as or different from that used to deposit chromium, and comprises an aqueous solution of chromic and sulphuric acids. The temperature should be between 110 and 160 F., and the immersion time is preferably between 5 and 30 seconds. The cathode current density used for the plating is preferably between 150 and 265 amps. per square foot. Specification 738,228 is referred to.
Patent GB-215263-A (GB)
Title: Improvements in pumps
IPC: E21B27/00
Filed: 1923-10-01
Abstract: 215,263. Mowers, O. Oct. 1, 1923. Buckets; single-acting bucket pumps; pumps for gritty liquids. - In a bucket plunger pump for deep wells, the plunger comprises a cupped member 6 screwed to the pump rod 3 and supporting a flexible cupped member 19 which is held in place by a flange 7 on a tube 4 screwed into the member 6 and adapted to be connected at its upper end to the pump rod. During the descent of the plunger, the liquid below passes up between the barrel and the member 19; during the upstroke the pressure of the liquid above the plunger presses the member 19 into contact with the barrel. Perforations 16 in the cup 6 and a valved passage 8 and ports 12 in the tube 4 allow a portion of the liquid to pass through the plunger on its downstroke to remove sand
Patent GB-805383-A (GB)
Title: Improvements in or relating to method of preparing clay catalyst granule, the catalyst granule resulting from said method and the process employing said new catalyst
Inventor: HANSON ROSS A
IPC: B01J37/00
Filed: 1956-08-09
Abstract: An abrasion-resistance catalytic or gasabsorbent granule comprises a dried composite of finely divided kaolin clay and finely divided acid-washed bentonite clay in intimate mixture, the weight ratio of kaolin to bentonite being between 35-65 and 5-95 on a dry basis.  The non-swelling or sub-bentonite clays may be activated by treating with a mineral acid such as sulphuric acid to remove iron from the clay. The above clays may be compounded with adsorbent gel-type oxides such as silica, alumina, titania, thoria, zirconia or magnesia and may be impregnated with a metal oxide from Groups VIA or VIII, for catalytic purposes (e.g. G, Mo, W, U, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd).  The clay granules may be used as cracking catalysts for cracking gas oils and as adsorbents to remove sulphur, nitrogen and gum-forming diolefins from petroleum.  In combination with alumina the catalysts are useful for conversions which do not involve hydrogenation or dehydrogenation, e.g. cracking, isomerizing or reforming hydrocarbon fractions at temperatures of 900-1200 DEG  F. With the addition of the metal catalysts, however, the catalysts are suitable for dehydrogenation and hydrogenation reactions and the hydro-desulphurization of hydrocarbons.  Regeneration of the clay granules is effected with air or oxygen at 900-1500 DEG  F. Regeneration of the heavy metal catalysts is with air, diluted with an inert gas at first, then pure air followed by hydrogen. Hydrodesulphurization may be carried out at 600-1000 DEG  F.; atmospheric to 5000 p.s.i. pressure; space velocities of 0.2 to 10 V/V/Hr; and 500 to 10,000 S.C.F./Bbl hydrogen feed rate.  The corresponding operating conditions for hydrodenitrogenation are 700-1000 DEG  F.; 500-10,000 p.s.i.; 0.2-10 V/V/Hr; and 1000-10,000 S.C.F./Bbl., the process preferably being conducted in two stages.ALSO:An abrasion resistance clay composite comprises a dried composite of finely divided kaolin clay and finely divided acid washed bentonite clay in intimate mixture, the weight ratio of kaolin to bentonite being between 35-65 and 5-95 on a dry basis. The non-swelling or subbentonite clays may be activated by treating with a mineral acid such as sulphuric acid to remove iron from the clay.
Patent GB-170986-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/54
Filed: 1920-08-23
Abstract: 170,986. Giffin, H. M. Aug. 23, 1920. Clutches, friction.-In plate clutches running. in oil-tight casings, the presser-rings and operating-means therefor are unconnected with either the driving or driven members, in order to avoid loss of power by churning the oil when running declutched. A driving-shaft 10 has slidably keyed to it a plate 20, on the boss 21 of which slides a plate 23, and a driven shaft 11, or pulley, has keyed to it a casing 12 having a bearing 15 on the shaft 10 and slidably carrying on keys 16 clutch plates 17, 17<a>, 17b and a presser-plate 24, which plate and the end wall 13 of the casing 12 cannot become worn, as there is no slip between them and the plates 17<a>, 17b respectively. Floating presser-rings 25, 25<a> respectively contact with the plate 24 and a head 26, which is adjustably screwed in the casing 12 and locked by an oiltight check-ring 51. The rings 25, 25<a> are separated for clutch engagement by toggles 29 actuated by links 33 pivoted on a sleeve 37, which slides through an oil-tight aperture in the head 26 and contains an annular oil-chamber 40 communicating by a passage 41 with the casing and by a duct 47 with a groove 43 in an actuating trunnion-ring 44, wherein oil is centrifugally retained. The links 33 carry stops 38 contacting with the plate 24 to prevent excessive movement of the sleeve. The inner face 19 of the wall 13 has two radial grooves for feeding oil to the bearing 15 when the casing is at rest. The casing is about one-quarter filled with oil, the presence of which between the clutch discs ensures gradual starting.
Patent GB-973392-A (GB)
Title: Improvements in or relating to frequency modulation circuits
IPC: H03C3/00
Filed: 1963-06-19
Abstract: 973,392. Frequency modulation; radio frequency systems. AMPEX CORPORATION. June 19, 1963 [July 2, 1962], No. 24453/63. Headings H3R and H4L. -Modulation is directly applied to the junction cf a pair of forwardly biased diodes 17, 18 connected in series opposition between the bases of a pair of transistors cross-coupled by capacitors 26, 27 between their collectors and bases to form a multivibrator whose frequency is varied by the modulation. A sine wave output is derived by a transformer 34 connected across the emitters, and applied through an emitter follower 38 to output terminals. A potentiometer 22 provides symmetrical balancing of the transistors and variable resistance 30 adjusts the centre frequency. The modulation may be television video signals, and the FM output recorded on magnetic tape.
Patent GB-1064663-A (GB)
Title: A closure for a waste receptacle
Inventor: MINTON CARL T
IPC: B65F1/16
Filed: 1964-06-12
Abstract: 1,064,663. Refuse receptacles. C.A.H. INDUSTRIES Inc. June 12, 1964, No. 24480/64. Heading A4A. Elements 6, 7, 8 of stamped or spun metal are welded together at their peripheries 16, 18 and 19, 23 to form a closure seating on the mouth of a waste receptacle and smothering an incipient fire. The element 8 forms an input 11 for waste matter and, with the elements 6, 7, a hollow annulus into which combustion gas passes and is deflected along the line of the arrows 28, 29 to obstruct entry of air through the input 11 to sustain the fire.
Patent GB-1315079-A (GB)
Title: Meter pulse generator
IPC: H04M15/00
Filed: 1971-04-19
Abstract: 1315079 Automatic exchange equipment; transistor pulse oscillators PYLON ELECTRONIC DEVELOPMENT CO Ltd 19 April 1971 [2 April 1970] 24486/71 Headings H3T and H4K Metering pulses are supplied in a telephone system by a system comprising at least one pulse generator 12 which supplies regular pulses to a bi-stable circuit 20 producing a square wave output on one terminal which supplies a monostable circuit 23 and a shift register 24 which shift register has a plurality of outputs which are gated by the output of the monostable circuit to provide pulses in a predetermined sequence to operate associated relays whose contacts connect a voltage source to a telephone line to provide a pulse which is used for metering. The number of pulses received depends on the duration of the call and different day and night rates of pulses are provided by means of rate control 14 which in the absence of a control signal includes the frequency halving circuit 16 in the system. Preferably the inverted output of the bi-stable 20 is used to provide a "six phase" output, i.e. a sequence of interleaved pulses on six lines. In the system described the relays have two sets of contacts in the lines. Pulse generator 12 consists of a relaxation oscillator using a unijunction transistor whose frequency can be altered by varying tap 75 on potentiometer 82. The frequency may be trimmed by variable resistor 95. The output frequency of the generator can be further divided by 10 or 100 by units 102, 105. A monitoring arrangement is provided to give an alarm indication if loss of pulses is detected. Each relay board (Fig. 4, not shown) is connected to a monitor board (Fig. 5, not shown) which consists of a plurality of resettable trigger circuits each connected to be set whenever a respective relay operates. A clock arrangement provides an initial resetting pulse to the trigger circuits and, after a time sufficient to allow all the circuits to have been set, an interrogating pulse is sent to a gate (NAND logic is used) which will open to operate and alarm indication if one of the trigger circuits has not been set.
Patent GB-1015065-A (GB)
Title: Door protector
Inventor: KENT FREDERICK
IPC: E05F5/06
Filed: 1964-06-12
Abstract: 1,015,065. Door protector. TENK PRODUCTS Ltd. June 12, 1964, No. 24556/64. Addition to 981,763. Heading E2X. A door protector as described in the parent Specification in which the reflector is obliquely mounted on the door so as to increase its effectiveness when the door is open at an acute angle to its frame.
Patent GB-269405-A (GB)
Title: Electric hand lamps
IPC: F21L4/00
Filed: 1926-10-04
Abstract: 269,405. Marks, E. C. R., (National Carbon Co., Inc.). Oct. 4, 1926. Battery lamps; cut-out arrangements.-In flashlamps or other hand-lamps for use in mines, &c., a cut-out device for breaking the electric circuit when the bulb is fractured is combined with means for adjusting the bulb with respect to the reflector to vary the spread of the light, and the cut-out device is insertible as a unit into adjustable-focus flash-lamps generally. The socket 20 of the bulb-holder is secured in a cap 24, and both are slidable on a neck 14 of the reflector 7 to vary the spread of the light. A spring 21 presess down the cap 24 so that a centre contact 28, which is fitted in but insulated from the bottom of the cap, engages a terminal of the battery, and the battery is adapted to be raised and lowered by a screw-cap at the bottom end of the lamp casing to adjust the bulb. The bulb is slidden into the socket 20 and its rim contact rests on a conducting spring 35, and a guard 47 is adjusted so as to press the bulb down and compress the spring 35 until the centre contact of the bulb engages the spring-pressed centre contact 31 of the cap 24. The guard 47 is carried by wires 39 slidable through holes in the reflector and mounted on a screw-threaded ring 41 adjustable on the cap 24. The guard may comprise a wire bent 'as shown in Fig. 4 so as to embrace the bulb 38 to keep it upright in the socket, or it may be of sheet metal as shown at 51, Fig. 7, so that in the event of the bulb fracturing, its filament will be pressed against the guard by the spring 35 and immediately cooled thereby.
Patent GB-481366-A (GB)
Title: Improvements in and relating to the comminution of solid bodies and more particularly to the production of metal powders
IPC: B02C17/18
Filed: 1936-09-09
Abstract: 481,366. Charging hoppers and delivering material therefrom. MANDLE. H. H. Sept. 9, 1936, No. 24616. [Class 78 (i)] [Also in Group II] The upper part of a hopper 2 comprises a cylindrical chamber 61 closed by a door 53, while the lower part comprises a tapered chamber 52 closed by slide 51 operated through rack teeth on a bar 55 connected to the door latch 54. When the door is opened the slide is closed automatically. To charge the lower part of the hopper a semi-cylindrical tray is withdrawn partly from the cylinder and filled with the material to be ground, then slid back again in the guides 62 and turned through half a revolution to deposit the charge into the lower part 52. The door 53 is then closed and a handle 56 operated to move the latch into locked position and to withdraw the slide 51.
Patent GB-735237-A (GB)
Title: Improvements in or relating to froth flotation of ores
IPC: B03D1/16
Filed: 1952-10-01
Abstract: 735,237. Washing granular materials. MUFULIRA COPPER MINES, Ltd. (Dell, C. C.). Oct. 1, 1953 [Oct. 1, 1952], No. 24631/52. Class 82 (2). A froth-flotation process for ores produces a series of successive froths from a given ore-pulp, the earlier froths of the series containing the richer mineral, and the mineral from these froths is re-cleaned by rediffusion in water and refloated, the richest first, the residue thereof with the mineral from the next froth, the residue from that with the mineral from the next froth, and so on. Similar re-cleaning treatments may follow. The apparatus described has horizontally divided compartments formed by partitions 43, 44. Agitator shafts 45-48 each carry impellers 50 with air inlet pipes 54. Pulp is supplied to this stage through pipe 55, and tailings leave at 56. Bladed members 62 working in openings 57 rediffuse the froth in chamber 61. Inlet 63 and tailings outlet 66 are provided. A similar action takes place in the topmost compartment. A launder 74 collects the final froth and an adjustable flap 77 allows the left-hand pulp and right-hand pulp to be separated. Outlet 75 yields middlings and the main concentrate is collected in portion 78.
Patent GB-330185-A (GB)
Title: An improved fish-plate connection
IPC: E21D11/22
Filed: 1929-08-13
Abstract: 330,185. Raine & Co., Ltd., and March, T. E. Aug. 13, 1929. Mine props; ironwork, constructional.-Fishplates for pit arches and other curved girders 3, Fig. 1, consist of a pair of curved channel plates 2 having flange extensions 2<b> to receive securing bolts. The flange may be above or below the girder and may consist of spaced projections 7, 8, Fig. 7. The fisbplates may also be connected by a central bolt 9 passing through recesses in the ends of the girder webs, or by a bolt 5, Fig. 3, passing through distance-pieces 1<x> separate from or formed on one or both plates and fitting between the spaced ends of the girders.
Patent GB-891255-A (GB)
Title: Improvements in or relating to means for displaying navigational information to the pilot of an aircraft
Inventor: BENTLEY LAWRENCE CRANMER
IPC: G02B27/01
Filed: 1959-07-17
Abstract: 891,255. Indicators on aircraft. AVIATION, MINISTER OF, and BUSH & RANK CINTEL Ltd July 18, 1960 [July 17, 1959], No. 24730/59. Class 4. [Also in Group XL(c)] Means-for displaying navigational information to an aircraft pilot comprises a cathode ray tube 4 so placed that a display on its screen is visible to the pilot by reflection in a partial reflector 3 disposed in the pilot's field of vision, and one or more lenses 5 disposed between the. tube and reflector so that the image of the screen presented to the pilot is at infinity. The reflector 3 may be dichroic, reflecting only light of the colour emitted by the tube, and transmitting all other light, and is placed in front of the windscreen 1, or may be constituted by the windscreen itself. An additional reflector 7 may be used so that the tube axis may be horizontal. Specification 873,321 is referred to.
Patent GB-594119-A (GB)
Title: Improvements in or relating to accordions
IPC: G10D11/00
Filed: 1939-08-30
Abstract: 594,119. Accordions. SOPRANI, M. Aug. 30, 1939, No. 24881. Convention date, Ang. 31, 1938. [Class 88 (ii)] In a piano accordion the base-plate of the keyboard 7 of the treble clef is integral with the corresponding harmonic case 2, while the other harmonic case 1 carries the button keys 6 controlling the base notes.
Patent GB-1379341-A (GB)
Title: Process for the production of organotin halides
IPC: C07F7/22
Filed: 1973-05-24
Abstract: 1379341 Preparing organotin halides CIBAGEIGY MARIENBERG GmbH 24 May 1973 [25 May 1972] 24897/73 Heading C2J Organotin halides of formula R n SnHal 4-n  where R is a C 1-4  alkyl or alkenyl group, Hal is Cl, Br or I and n is 1, 2 or 3 are prepared by reacting tin or an alloy thereof with a halide R-Hal at 100-300‹ C., at a pressure of 0-20 atmospheres and in the presence of catalysts known for this reaction and also, as reaction medium, at least one sulphone of formula or where R 1  and R 2  are C 1-4  alkyl or alkenyl groups or phenyl which may be substituted by methyl, halogen or nitro groups and X is a saturated or unsaturated C 4-10  hydrocarbon chain optionally substituted by Cl, OH, (CH 3 ) 2 N-, acetoxy, sulpholanyloxy or alkoxy groups. In the examples, methyl, ethyl and n-butyl chlorides are reacted with tin foil, granulate or shot in tetramethylene sulphone, 3-methylsulpholane, dimethyl sulphone, 2,3-dichlorosulpholane, 2,5- dihydrothiophene-1,1-dioxide, or di-n-butyl sulphone as reaction medium using as catalyst iodine usually together with FeCl 3 , CoCl 2 , MnS or NiS, and/or tri-n-butyl- or di-n-octylphosphine, or benzylamine, or orthoboric acid and n-octylamine. The process may be carried out continuously.
Patent GB-246409-A (GB)
Title: Improvements in cigarette and like cases
IPC: A24F15/12
Filed: 1925-10-07
Abstract: 246,409. Heath, H. M. Oct. 7, 1925. Fittings, internal.-In a cigarette case &c. each of the bands for holding the contents in place consists of two or more coils 15 of fine wire soldered to grooved parts 19 of hooks 16.
Patent GB-532476-A (GB)
Title: Improvements in or relating to apparatus for measuring earth resistances
IPC: G01V3/06
Filed: 1939-08-31
Abstract: 532,476. Resistance measurements. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. Aug. 31, 1939, No. 25007. Convention date, Aug. 31, 1938. [Class 37] In apparatus for measuring earth resistances by passing A.C. through an earth circuit between the earthing conductor of which the resistance is to be measured and an auxiliary earthing conductor and supplying a D.C. instrument with a current corresponding to the voltage drop between the earthing conductor and a testing conductor, the A.C. is produced by a converter having oscillating contacts and supplied by a battery, the oscillating member of the converter being mechanically coupled to one or more synchronous switches for rectifying the current supplied to the instrument. One terminal of a battery 1 is connected through a switch 2 to the centre of the primary winding 3 of a transformer, the secondary winding 4 of which supplies an alternating current between the main earthing conductor 5 and an auxiliary earthing conductor 6. The other terminal of the battery 1 is connected to one end of the primary winding 3 through the exciting coil 7 of an oscillating converter and to the other end of the winding 3 through the oscillating contact 8 of the converter. In series with the secondary winding 4 is the primary winding 18 of a transformer, the secondary winding 19 of which is connected to one coil 11 of a quotient measuring instrument 12 through a synchronous switch 9. The voltage drop between the earthing conductor 5 and a test conductor 17 is applied to the primary winding 20 of a transformer the secondary winding 21 of which is connected through a synchronous switch 14 to the second coil 13 of the instrument 12. The switches 8, 9, 14 are mechanically connected. The voltage transformer 20, 21 may be omitted and the voltage drop applied to the coil 13 through two synchronous switches acting as rectifiers in current reversing connection. The current transformer 18, 19 may similarly be omitted and the coil 12 supplied through two synchronous switches. The phase of the current flowing through the earth circuit may be adjusted to correspond with the switching phase of the converter by means of reactances or capacities.