baber/WOPTO huggingface dataset:
Patent GB-847781-A (GB)
Title: Improvements in or relating to steam cracking naphtha hydrocarbons
IPC: B01D51/10
Filed: 1959-04-17
Abstract: <PICT:0847781/III/1> In the steam cracking of virgin naphtha fractions to form C2-C6 unsaturated hydrocarbons the cracked products are cooled by mixing with a quench oil and then passed to a quenching and fractionating zone where they are further cooled by countercurrent contact with quench oil to separate material boiling above 430 DEG F., residual oil is withdrawn from the base of the quenching zone, cooled and recycled and a portion purged and replaced by a gas oil of relatively lower polymer-tar forming reactivity.  In a preferred embodiment a naphtha boiling in the range 0-330 DEG F. is introduced by line 1 and sufficient steam is added through line 4 to produce a mixture containing 60-90% (mol) of steam.  The naphtha is cracked in the furnace 3 at 1350-1500 DEG F. and a total pressure of 1-5 atmospheres, the residence time being less than 1 minute.  Quench oil from line 7 at a temperature of 300-400 DEG F. is added to the cracking coil effluent at one or more points at a rate of 3-6 parts by weight per part of effluent to cool the effluent to 450-650 DEG F. The cooled effluent is then fed to quench tower 6 where it is further cooled by contact with downflowing quench oil, it being arranged that all material boiling above 430 DEG F. is condensed but no water vapour is condensed.  The light ends leave by line 29 and are processed conventionally.  Quench oil leaves by line 10 and is cooled by heat exchanger 13 to 300-400 DEG F.  Part of the cooled oil passes by line 43 to a mid point of the quench tower; a further portion, about 1-10% of the total stream is purged by line 16.  The amount passed by line 7 to line 5 as described amounts to about half the total stream.  The remainder is further cooled in cooler 18 to 150-200 DEG F. and recycled by line 19 to the top of tower 6.  Part may be bled off through line 20 for use as a sponge oil to remove higher boiling components from an ethylene containing stream in processing the light ends and is then returned by line 21 to line 22 which feeds an intermediate stream to tower 6 at a temperature of 175-200 DEG F.  The stream fed to the top of the tower by line 24 is 5-50 DEG F. cooler.  The total feed of quench oil to tower 6 is preferably about half the total circulating quantity and 3-6 times the weight of hydrocarbons in the cracking coil effluent.  Make-up oil may be introduced by line 8 or preferably line 9 and may be a virgin or catalytically cracked gas oil boiling in the range 450-700 DEG F.  Part of the quench oil may be removed by line 25, clay treated to remove tar, and returned by line 26.
Patent GB-647777-A (GB)
Title: Improvements in or relating to work steadies for lathes
Inventor: PROCTER GEORGE GORMAN
IPC: B23B13/12
Filed: 1947-05-15
Abstract: 647,777. Lathe centre-rests. SMITH & SONS (ENGLAND), Ltd., S. May 15, 1947, No. 13176. [Class 88 (iii)] A work-steady for a lathe is separately mounted from the cutter and comprises three or more rollers 16 mounted within a non-rotating one-piece sleeve 22 with their axes parallel to the work axis, and adjusting means 18, 29, for simultaneously moving the rollers to or from the work axis to centre the work automatically. Rotation of the threaded collar 29 moves the wedges 18 to advance the rollers against the . pressure of springs 19, 20. In a modification, Figs. 4 and 5, the rollers are pivoted to a member 60 which is rotated to cause a cam 69 to adjust .the rollers. The member 60 is locked by screws 82.
Patent GB-882038-A (GB)
Title: Improvements in clamps
IPC: F16L25/04
Filed: 1960-04-13
Abstract: 882,038. Clamps. OHLSON, E. April 13, 1960, No. 13181/60. Class 44. A clamp of the kind produced by bending transversely a sheet metal blank formed with identical circular apertures 1 which are interconnected by a slot 3 and in the bent condition of the blank are parallel and aligned is characterized in that in the unbent condition of the blank the ends of the slot are situated on either side respectively of an imaginary straight line AA connecting the centres of the apertures. The slot edges 4 are S-shaped such that when clamped around a pipe &c. by a nut and bolt assembly 7, 8, Fig. 2 the edges are drawn together the apertures 1 fully embracing the pipe. In a modified clamp the apertures 1 are formed with edge flanges 9, Fig. 6 to provide a larger pipe embracing surface.
Patent GB-146688-A (GB)
Title: Improved construction of sprayer
IPC: B05B1/26
Filed: 1919-05-26
Abstract: 146,688. King, W. May 26, 1919. Splashing-apparatus.-A spray-producer stated to be applicable to spraying for horticultural and agricultural purposes, for humidifying air in rooms, or for sewage deodorizing, or for spraying oils for liquid-fuel engines, comprises a supply-pipe B to which is attached a socket C, a frame D adjustable on the socket and provided with knife-edges E on the inner portion of the side walls, and a hollow sleeve F mounted in the frame co-axial with the socket C and supporting a headed plug H against which the liquid impinges. The density of the spray can be regulated by regulating the height of the frame D on the pipe B, and the pipe B may be provided with a spike for insertion in the ground and with a branch pipe L for attachment to a hose.
Patent GB-437875-A (GB)
Title: Improvements in or relating to folding beds
IPC: A47C17/78
Filed: 1935-05-03
Abstract: 437,875. Folding beds. FORTIN, B. M. C., 16, Rue Campulley, Rouen, France. May 3, 1935, No. 13234. [Class 52 (ii)] A folding bed or stretcher of the kind in which a cloth is stretched on a frame having two longitudinal members each composed of three reversely hinged sections with hinged feet, is provided with tension members connecting the feet and the longitudinal members so as to constitute a rigid assembly when the bed is extended. The reversely arranged hinges 7, 8 enable the bed to be folded in zig-zag fashion, while pivoted locking plates 9, 10 hold the joint rigid when the bed is extended. Hinged feet 16, 17 are connected by tension members 18, 19, 24, 27 to the longitudinal members and to one another in such a way that the tension members are taut when the bed is extended but allow it to fold freely. Removable transverse members 30 connect the feet, while the ends are connected by tubular members 2 passing through hems at the ends of the cloth. Flexible tension members 37 may also be used at the ends. The cloth is secured to the longitudinal members by loops 35 through which pass loops 34 on longitudinal cords led along the inside of the frame.
Patent GB-1310246-A (GB)
Title: Automatic blood testing
IPC: G04F8/00
Filed: 1970-03-19
Abstract: 1310246 Determination of coagulation time of blood samples MICROMEDIC SYSTEMS Inc 19 March 1972 [19 March 1969] 13252/70 Heading B1X [Also in Divisions G1 and G3] Apparatus for measuring the coagulation time of a blood sample in a container 1, 2 equipped with a stirrer and supported on heatable turntable 52 comprises (Fig. 1) electric motor M, a rotatable drive assembly comprising two coaxial drive shafts 38, 31, shaft 38 being connectable to the stirrer and shaft 31 being drivable by the motor through bevel gears 29, 30 shaft 38 (Fig. 4) being capable of limited rotational movement relative to shaft 31 between first and second angular positions, friction means which may comprise spring 36 with its lower end engaging gear 30 when shaft 38 has been manually lowered to lower the stirrer into the container, the friction means holding the shaft 38 in its first position until the sample coagulates, the circuit to the motor M including a switch the movable part of which may be spring 36, the disengagement of the end of the spring from gear 30 when coagulation of the sample increases the drag on shaft 38 and moves it to its second angular position operating automatically to break the circuit and stop motor M, and means for example counter 19 for measuring the time of operation of the motor. In the apparatus shown, shaft 38 is lowered to engage the stirrer in the sample container by manual operation of rod 23. Shaft 38 carries key 37 to move in a slot (35) in the outer shaft 31 until it bears against the lower end of spring 36 forcing it into contact with gear 30 and so starting the motor. Containers 1, 2 may be prepacked with reagents for use in the test as in Specification 1310245.
Patent GB-1429677-A (GB)
Title: Gas turbine engine combustion equipment
IPC: F23R3/32
Filed: 1973-03-20
Abstract: 1429677 Gas turbine engine combustion chambers ROLLS-ROYCE (1971) Ltd 8 March 1974 [20 March 1973] 13274/73 Heading F1L In an air-jacketed gas turbine engine combustion chamber including a flame tube and a T-shape vaporizer 22 with outlet arms 25 directed upstream, a continuous, or substantially continuous, slot 38 is formed around the inner periphery of the tube to direct a curtain of air from the jacket, via apertures 33 and a chamber 30 to prevent any unvaporized fuel from forming a sheet on surface 60 and passing unburnt along the tube wall. The chamber 30 also has downstream outlets 34 to direct cooling air along the tube inner surface. A shroud 43 surrounds the upstream end of the vapourizer defining a cooling chamber 44 having radially directed outlets 46 helping to promote mixing of the fuel and air.
Patent GB-1253927-A (GB)
Title: Hydraulic gear pumps
Inventor: PRIJATEL EDWARD ANTHONY
IPC: F04C15/00
Filed: 1969-11-07
Abstract: 1,253,927. Hydraulic gear pumps and motors. PARKER-HANNIFIN CORP. Nov.7, 1969, No. 13306/71. Divided out of 1,253, 926. Heading F1. The subject matter of this Specification is identical with that described in Specification 1,253,926, but the claims are concerned with the relief of pressure from behind the thrust plate and the balancing of the hydraulic forces on the opposite sides of the wear plate 27 in the high and low pressure zones of the pump, slight over balancing in one part of the intermediate pressure zone and slight underbalancing in another part thereof, to reduce friction forces between the end faces of the gears and the wear and thrust plates and hence reduce wear on the pump parts.
Patent GB-275749-A (GB)
Title: Improvements in and relating to bedsteads
IPC: A47C17/86
Filed: 1926-05-26
Abstract: 275,749. Douglas, M. E. R. May 26, 1926. Mattresses. - A mattress frame may be positioned on'a mattress-supporting structure by means of dowels 19 engaging recesses in the mattress frame.
Patent GB-1068835-A (GB)
Title: Vehicles bodies and bumpers therefor
Inventor: BURRIDGE ANTHONY ARTHUR
IPC: B60R19/20
Filed: 1963-03-29
Abstract: 1,068,835. Vehicle bumpers. WILMOT BREEDEN Ltd. March 31, 1964 [March 29, 1963], No. 13336/64. Divided out of 1,068,834. Heading B7J. A vehicle bumper comprises an elongated shell 13, Fig. 4, of hollow cross-section formed of rubber or other flexible material and having an open side bounded by a pair of flanges or heads 13a each extending in a closed path in the manner of a tyre, the flanges being sealingly engaged with flanges 16a, 17a of body portions 16, 17 surrounding the radiator grille 14 and the headlamps 15, Fig. 3 (not shown), the shell having an integral valve 18 for admission of air or gas under pressure into the shell. As shown in Fig. 4, the underpart of the shell has a rearwardly extending portion to protect the bodywork against stones and other missiles. In the form described with reference to Fig. 5 (not shown), there are two bumpers each surrounding only the headlamps, with vertical portions adjacent the radiator grille to serve as overriders. According to another embodiment, the open side of the shell is in a general vertical plane transversely of the vehicle and extends in the path of an ellipse.
Patent GB-133749-A (GB)
IPC: F16K11/083
Abstract: 133,749. Dale, J. Oct. 14, 1918. Plug cocks; handles and keys.-A four-way cock for testing fluid-circulating systems, such as highpressure heating-installations, comprises permanently connected inlet and outlet branches 2, 3, Figs. 2 and 3, and additional flow and return branches 4, 5 on one side of the shell for temporarily coupling up a test pump in the circuit. When not in use, the branches 4, 5 are stopped off by screwed caps 6. Normally, the plug 7 gives a through-flow from 2 to 3 through the plug passage 8, but, for a test, the plug is turned to the position shown in Fig. 3, whereby the flow is diverted from the inlet 2 through the test pump and back into the outlet 3 by the plug passage 9, The extreme positions of the plug are defined by a stop-pin 19 operating in a quadrant slot 18. To prevent the operating-key from being removed until the plug is in its normal working position, the key is formed with a feather 13, Fig. 9, at one side to pass through a correspondingly - shaped opening in a cap 14 into and out of a similar socket 11 in the plug only when the plug is in the aforesaid normal position.
Patent GB-199010-A (GB)
Title: Improvements in apparatus for mixing air and combustible gas in predetermined proportions
IPC: F02B43/00
Filed: 1923-05-18
Abstract: 199,010. Dumanois, E. P. June 8, 1922, [Convention date]. Gas-mixing appliances.-Apparatus for mixing air -and gas in predetermined proportions comprises an air reservoir 1 supplied from a storage device or pump through a valve 2 and cock 3, and a gas reservoir 4 supplied from a storage device, a. generator, or a pump, through a valve 5 and cock 6. The reservoirs communicate through pipes 7, 8 and valves 9, 10 with a mixing-chamber 11 having an outlet 12 controlled by a valve 13, and fitted with a valve 14 which lifts at a predetermined pressure, and operates an indicator 15. To obtain mixtures of desired proportions, the relative volumes of the reservoirs 1, 4 and the cross-sectional areas of the pipes 7, 8 are arranged in these proportions. In use, the cock 3 is opened and compressed air admitted to the reservoir 1 until the indicator 15 is operated; the cock 3 is then closed, and the cock 6 opened until the indicator is operated, when the cock 6 is closed, and the valve 13 opened. Specification 179,152 is referred to. According to the Specification as open to inspection under Sect. 91 (3) (a), a valve 14 and indicator 15, or a pressure gauge, may be provided on each reservoir, in which case the air and gas may be used at different pressures, and the automatic valves 9, 10 are replaced by closing- devices adapted to be operated simultaneously, the cock 13 being dispensed with. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1458545-A (GB)
Title: Window detector circuit
IPC: H03M1/34
Filed: 1974-03-26
Abstract: 1458545 Passing signals within an amplitude range RCA CORPORATION 26 March 1974 [28 March 1973] 13382/74 Heading H3T A circuit for producing an analogue output when an input is between two levels comprises a first circuit which produces an output corresponding to the input when the input exceeds a first level and a second circuit which clamps the output to a reference value and disables the first circuit when the input exceeds a second level higher than the first. In the circuit shown, when the input at 16 is low both transistors 10 and 30 are held off by capacitors 20 and 40 and the output terminal 14 is thus isolated for both input terminals 16 and 20. When the input signal at 16 exceeds the drain threshold of transistor 10 the transistor conducts and connects input and output terminals. When the input exceeds the combined threshold of diode connected transistor 34 and transistor 30, transistor 30 conducts to connect the output terminal to earth and, via inverter 44, 46, to switch off transistor 10. The biasing capacitors may be replaced by resistors (Figs. 2 and 3, not shown) and the diode transistor may be replaced by a plurality of such transistors (Fig. 4, not shown) or by a Zener diode.
Patent GB-235176-A (GB)
IPC: B62K19/08
Filed: 1925-05-22
Abstract: 235,176. Krauss, F. E. June 5, 1924, [Convention date]. Bicycles; frames.-In a motor-cycle frame of the type made from sheet-metal bent to a channel shape, with the back going from the steering- head to the rear axle in a straight line, and with side-cheeks extending downwards and enclosing the accessories of the motor-cycle and carrying the foot-rests, the frame is formed from a sheetmetal blank, Fig. 1, with straight boundary edges b c, c d,i so shaped that when bent about the centre line a a, it forms a suspended elongated triangle, Fig. 2, with the back a a as hypotenuse and the main edges bc, cd as the sides enclosing the greatest angle.
Patent GB-134896-A (GB)
IPC: F42B10/34
Abstract: 134,896. Lloyd, H. G. Nov. 8, 1918. Projectiles.-Relates to projectiles made with an annular explosive charge A' and an axial bore A<2> closed by a base plug or by hinged flaps B, B', which take up the propelling-pressure of the gun gases, but open during flight to allow free passage of air through the projectile. According to the invention, the projectile comprises a body portion A containing the explosive chamber, and a nosepiece A<1> screwed to the body portion and closing the mouth of the explosive chamber. The bore A<3> may be rifled as indicated at A<7>.
Patent GB-135057-A (GB)
IPC: H01R43/14
Abstract: 135,057. Phillips, J. Jan. 31, 1919. Disk apparatus.-Relates to apparatus for grinding the commutators of electric motors &c.. and comprises a construction whereby, whatever the position of the opening in the commutator casing, the apparatus may be set to perform the grinding without necessitating the removal of the commutator or of the motor from its normal working position, and comprises a pillar 1 on which is adjustably mounted a clamp bracket 4 carrying a slide 9, adjustable by means of a screw 11, on which is pivotally mounted a ring 14 in which is rotatably mounted a ring 19. This inner ring has therein a base 17 carrying a slide 18, on which are provided bearings 21 for a spindle 22 located substantially concentric with or slightly eccentric to the ring, and in the end of an arm 26 rotatably mounted on an extension of one of the bearings 21 is journaled the spindle 28 of the grinding-disk 29; the grinding-disk is driven from the spindle 22 by means of chain, spur, &c. gearing 30, the spindle being driven, through a long pulley 25, by a belt from an electric motor &c. A screw 24 with a handle 23 serves to traverse the grinding-disk. The various parts are secured in their adjusted positions by locking-screws 6, 16, 20, and 32 respectively.
Patent GB-326081-A (GB)
Title: Improvements relating to rotary screens or separators
IPC: B07B1/18
Filed: 1929-05-01
Abstract: 326,081. Reid, W., Reid, R. H., and Reid, W. May 1, 1929. Addition to 303,970. Rotary sieves.-In screens as described in the parent Specification some or all of the rollers are formed with circumferential grooves or depressions so that the screening apertures take the form more or less of the meshes of a reticulated screen.
Patent GB-437672-A (GB)
Title: Improvements in or relating to supply circuit arrangements for photo-electric cells and like low current consuming devices
IPC: H01J40/14
Filed: 1934-05-04
Abstract: 437,672. Circuits for electrostatic instruments. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and STEWART, J., The Mount, Newton-Stewart, Wigtownshire. May 4, 1934, No. 13558. [Class 40 (iv)] [See also Group XL] Polarizing voltage for a photo-electric cell, A, electrostatic microphone &c. is derived from a condenser C which is trickle-charged from a unidirectional source HT. A charging resistance R2 is connected between the source and condenser C, R2 having such a value that the potential drop therein due to the charging current is of the order of 5 per cent of the supply voltage. A series resistance R1 is connected between C and the cell A, the time constant of CAR1 being not less than one minute. In the case of an electrostatic microphone, R2 may have a value of 4-5 megohms as compared with 1 megohm for a photo-electric cell. The capacity of C is of the order of 2 microfarads. In a modification, R2 may be connected to a slider on a potentiometer shunted across the source HT, Fig. 2, (not shown).
Patent GB-438854-A (GB)
Title: Improvements in or relating to grinding or abrading machines
IPC: B24D5/16
Filed: 1935-05-09
Abstract: 438,854. Grinding. WALTERS, B., and DOBSON, W. M., 57, Bailey Street, Sheffield. May 9, 1935, No. 13635. [Class 60] [See also Group XXIV] In order to avoid bending of the spindle of a grinding-wheel, and breakage of the wheel due to the flat faces of the wheel not being parallel, the wheel 7 is clamped between washers 2 bored out to leave a space 6 around the spindle 1 and provided on their outer faces with part spherical recesses. In the recesses are engaged spherical segments 3 bored to the diameter of the spindle, and clamped by a nut 4. In a modification, the washers 2 have part spherical projecting bosses on their outer faces, the segments 3 having part spherical recesses fitting the bosses.
Patent GB-417838-A (GB)
Title: Improvements relating to the manufacture of simple and multiple fixed electric condensers
IPC: B44F11/04
Filed: 1934-05-07
Abstract: 417,838. Condensers. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 7, 1934, Nos. 13770, 13771, and 13772. Convention dates, May 6, 1933, Oct. 27, 1933, and Feb. 1, 1934. [Class 38 (ii).] Metal coatings serving as armatures are deposited on the inner and outer surfaces of hollow glass bodies by chemical action, the surfaces being previously matted or ground to prevent subsequent loosening of the coating. The area of the coatings are determined by wax or other templets. Multiple condensers on the same glass tube 1 for cable compensation use may be formed by leaving uncoated strips, those on one surface being at an angle, for example at right angles, to those on the other. Contact may be made by soldering spring strips 2 to the coatings. The glass tube may be mounted in a protective casing 3 by insulating rings 4.
Patent GB-543596-A (GB)
Title: Improvements in or relating to the manufacture of cellulose ethers
IPC: C08B1/08
Filed: 1940-09-03
Abstract: 543,596. Cellulose derivatives. DREYFUS, H. Sept. 3, 1940, No. 13779. [Class 2 (ii)] Cellulose ethers are obtained by impregnating cellulose with a substantially saturated solution of a caustic alkali, incorporating further alkali and raising the temperature sufficiently to bring the alkali into solution, and subjecting the cellulose to etherification. An aqueous solution of caustic soda or potash may be used and further quantities of alkali may be added in one or more stages. Incorporation of further alkali may be effected prior to etherification but the alkali is preferably added in stages during etherification. Alkyl chlorides, dialkyl sulphates sodium alkyl sulphates, or aralkylating agents may be used. One mol of cellulose may be impregnated with about 4 mols of caustic soda in the form of a 50 per cent. solution and then about 1-2 molecular equivalents of etherifying agent may be added, the temperature being maintained at 35-55‹C. A further quantity of powdered caustic soda is then added and the temperature is raised to 70-80‹C. to bring the soda into solution. Further quantities of etherifying agent and powdered caustic soda are added and the temperature is raised to 90- 100‹C. to bring the soda into solution. The reaction may be carried out in presence of an inert diluent such as benzene, toluene, or xylene. Instead of adding further quantities of caustic soda as such during the reaction, there may be added metallic sodium which reacts with the water present to form caustic soda. The etherifying agent used may be soluble in the benzene or other inert diluent, e.g. it may be a salt of ethyl or other alkyl sulphuric acid with an organic base of high molecular weight, e.g. diethyl cyclohexylamine or tricyclohexylamine.