baber/WOPTO huggingface dataset:
Patent GB-1385149-A (GB)
Title: Inverter circuits
IPC: G11C11/413
Filed: 1973-07-20
Abstract: 1385149 Inverters INTERNATIONAL BUSINESS MACHINES CORP 20 July 1973 [6 Sept 1972] 34790/73 Heading H3T An inverter such as is suitable for use in decoders or driver circuits for memory storage cells comprises two parallel branches each consisting of a series connection of an active circuit element T 1  or T 1 <SP>1</SP> with a controllable resistive element T 2  or T 2 <SP>1</SP>, a feed-back path C 2  between the commoned control electrodes of T 2 , T 2 <SP>1</SP> and a junction point S<SP>1</SP> in one branch, the control electrodes of T 1 , T 1 <SP>1</SP> being connected to a common input terminal and the junction point S in the other branch being for connection to a capacitive load C L . In operation, an application of a positive pulse at input I turns on FETs T 1 , T 1 <SP>1</SP> so that the load C L  is rapidly discharged to earth potential via T 1  and points S, S<SP>1</SP> attain this low potential. Subsequently T 1 , T 1 <SP>1</SP> are turned off and as the gate G of T 2  is maintained positive by a diode connected FET T 3 , C L  charges up via T 2 . As the stray capacitance at S<SP>1</SP> is less than C L  present at S, the potential at S<SP>1</SP> increases faster than at S and due to feed-back via C 2  the potentials at points G, S also increase rapidly and C L  charges up very rapidly to the supply potential V D . The diode connected transistor T 3  may be connected to a separate drain supply which can be lowered by switching to block FETs T 2 , T 2 <SP>1</SP> when FETs T 1 , T 1 <SP>1</SP> are conductive.
Patent GB-483718-A (GB)
Title: Master units for printing by hectographic methods
IPC: B41M5/04
Filed: 1937-12-16
Abstract: 483,718. Copying documents; printing- surfaces. BLACKLOCK, D. S. Dec. 16, 1937, No. 34798. [Class 100 (ii)] Relates to thin cards or paper sheets C bearing information in hectographic ink to be copied on to copy sheets moistened with a liquid such as methylated spirits, and consists in affixing to one or both surfaces of the card &c. one or more strips A, A<1>, or pieces, of cardboard, metal, wood, celluloid, or similar material to provide extra thickness or rigidity and thereby to facilitate automatic feeding of the cards &c. in copying-apparatus. The feeding-device may be of the drop-feed or pusher-feed type. Each card may have perforations to facilitate sorting and a slot F offset from the centre so that a continuous slot in a stack of cards indicates correct arrangement. The strips A, A<1> may be fixed to the edges of the card by paper strips B, B<1> gummed round the edges of the card, and the fixing may be effected before the material is cut into units and prepared for use. The strips or gummed paper may be of various colours and may protrude beyond the edges of the card. The writing may be in reverse.
Patent GB-209281-A (GB)
Title: Improvements in apparatus for treating milk and other fluids
IPC: A23L3/16
Filed: 1922-12-21
Abstract: 209,281. Enock & Co., Ltd., A. G., Enock, A. G., and Enock, E. C. Dec. 21, 1922. Drip from, catching.-Vessels A for pasteurizing milk are discharged through valves E, beneath which rotates a collector G for receiving milk from the open valves and a trough U for catching milk from the closed valves. Specification 189,909, [Class 49, Food &c.], is referred to.
Patent GB-809114-A (GB)
Title: Synthesis of steroids
IPC: C07J75/00
Filed: 1955-05-27
Abstract: The invention comprises D 9(11)-pregnenes of general formula <FORM:0809114/IV (b)/1> (wherein the 4,5-position is saturated or double-bonded, R is hydrogen and R1 is hydroxy, or together R and R1 form a keto group or group convertible thereto by acid hydrolysis, Z is hydrogen or hydroxy and Y is bromine or chlorine), also a process for the preparation of D 9(11)-steroids by reacting an 11a ,21-dihydroxy steroid of the pregnane series with an alkane sulphonyl halide and reacting the product with a metal halide, preferably a sodium or lithium halide, other specified salts being beryllium and calcium chlorides, potassium, calcium and barium bromides.  The reaction with an alkane sulphonyl halide yields 11,21-di-alkane-sulphonyloxy compounds if there is a 17a -hydroxy substituent present, or a mixture of 11,21-di-alkanesulphonyloxy and 11-alkanesulphonyloxy-21-halo compounds if there is no 17a -substituent.  Specified starting materials are D 4-pregnene - 11a ,17a 21 - triol - 3,20 - dione, D 4-pregnene - 11a ,21 - diol - 3,20 - dione, 11a ,17a ,21 - trihydroxy - pregnane - 3,20 - dione, and 11a ,21 - dihydroxypregnane - 3,20 - dione.  In examples: (1) D 4-pregnene-11a ,17a ,21-triol-3,20-dione in pyridine is treated with methane sulphonyl chloride in chloroform at 0 DEG  C., yielding the 11a ,21-dimesylate; (2) 11-epicorticosterone treated likewise gives a mixture (separated by crystallization from acetone-ether) of 21-chloro- D 4-pregnen-11a -ol-3,20-dione 11-mesylate and epicorticosterone-11,21-dimesylate; (3) the dimesylate from (1) is refluxed with anhydrous potassium acetate and lithium bromide in glacial acetic acid, giving 21 - bromo - D 4,9(11) - pregnadien - 17a - ol-3,20-dione; (4) as in (3), but using lithium chloride to give 21-chloro- D 4,9(11)-pregnadien-17a  - ol - 3,20 - dione; (5) as in (3), but using sodium iodide to give D 4,9(11) - pregnadien-17a  - ol - 3,20 - dione, and similarly 21 - chloro-D 4,9(11) - pregnadiene - 3,20 - dione is obtained from 21 - chloro - D 4 - 11a  - ol - 3,20 - dione 11-mesylate.  A number of "Preparations" illustrate subsequent reactions of the D 4(11)-compounds, thus: (1) 21 - bromo - D 4,9(11) - pregnadien - 17a  - ol - 3,20 - dione is refluxed with ethanolic potassium acetate, giving D 4,9(11)-pregnadien - 17a ,21 - diol - 3,20 - dione 21 - acetate; (2) 21 - bromo - D 4,9(11) - pregnadien-17a  - ol - 3,20 - dione is treated with N-bromacetamide and HClO4, giving 9a ,21-dibromo - D 4 - pregnene - 17a ,11b  - diol - 3,20-dione; (3) the 21-chloro compound similarly gives 9a  - bromo - 21 - chloro - D 4 - pregnene-17a ,11b  - diol - 3,20 - dione (dichlorodimethylhydantoin as the reagent yields the corresponding 9a - chloro - compounds); (4) and (5) D 4,9(11) - pregnadien - 17a  - ol - 3,20 - dione with N-bromacetamide and with dichlorodimethyl hydrantoin respectively yields 9a -bromo- and 9a  - chloro - D 4 - pregnene - 11b ,17a  - diol-3,20-dione.  Specifications 792,223 and 792,224 are referred to.
Patent GB-411492-A (GB)
Title: Improvements relating to plant for rendering powdered material homogeneous
IPC: B65G53/00
Filed: 1932-12-08
Abstract: 411,492. Mixing powdered materials. NIELSEN, N., 44, Fuglebakkevej, Frederiksberg, near Copenhagen. Dec. 8, 1932, No. 34873. [Class 86.] In plant for homogenizing powdered material comprising a container fitted with stirrers and with means for injecting air jets to render the contents fluid, the material is discharged from the container by compressed air after closing the container. The material is fed to the container 1 by a worm 9 and is stirred by stirrers 5 on a vertical shaft ; air under pressure is supplied from a main 7 to nozzles 8 and escapes through a valved pipe 11 fitted with a filter. After the materials have been stirred, the pipe 11 and charging aperture 10 are closed by valves 13, 12 and a valve 18 in a discharge pipe 2 opened, the air pressure being increased. To assist the discharge a jet may be directed into the pipe 2 from a pipe 19 having a control valve 21. The feed to the container is controlled through a float 17, and the valve 21 may be spring-controlled and opened only when the air pressure within the container reaches a predetermined amount.
Patent GB-411524-A (GB)
Title: Improvements in or relating to the manufacture of lead storage batteries
IPC: C22C11/00
Filed: 1932-12-08
Abstract: A storage battery electrode is made of lead containing not more than 0,25 per cent of tellurium with or without a strengthening constituent such as cadmium, tin, or up to 12,5 per cent of antimony. A preferred alloy contains 0,05 per cent of tellurium and 6 per cent of antimony.  Specifications 7253/12, [Class 82 (i)], and 392,585 are referred to.
Patent GB-1055464-A (GB)
Title: Improvements in or relating to monorail systems
IPC: E01B25/10
Filed: 1962-09-14
Abstract: 1,055,464. Monorail systems. J. W. DARK. Sept. 12, 1963 [Sept. 14, 1962; Oct. 1, 1962], Nos. 35067/62 and 37197/62. Headings B7J and B7L. [Also in Division F2] A monorail system has the monocar supported by the surfaces 9, 10 of rail 6, 7, 8 by pairs of rollers 17 journalled in frames 18 which are connected by pivots 19 to underframe 16, Fig. 3. Drive wheels 21 and stabilizing wheels 26 bear on rail surfaces 11, 12 and flange 8 respectively, the wheels 21 being driven from electric motors the power for which is derived from conductor rails 24 engaged by shoes 25. The rail has a base plate 13 supported on pylons 14 by screw member 15 which can be adjusted to tilt the rail on curves. The running surfaces 9, 10 are of a plastics sheet material, the rollers 17 may be made of nylon. In Fig. 4, the drive wheels 21a are retractable at certain high speeds and the monocar is then propelled by a linear electric induction system comprising copper or aluminium strips 33 on a base 34 and retractable field coils 35 supported on arms 36, 37 on the monocar. A metallic sheet 30 is disposed between a plastics strip 29 and upper rail flange 6a. An earth rail 31 is connected at intervals to a plate 32 beneath the rail; the plate 32 is adjacent the side extensions 22a of the monocar which have an aerofoil undersurface creating an air cushion on movement of the car to relieve the load on rollers 17. The earth sheet 30 acts in conjunction with a sensing device on the monocar to detect flaws in plastics strip 29 by sparking techniques. In Fig. 5 each pair of rollers 17 is supported in a bogie 38 having an arm 40 pivotally connected at 41 to the next bogie. The bogie is formed with a tank 42 containing a cooling and/or lubricating liquid which is discharged through outlet 43 on to the running track. The electric induction propulsion may be replaced by compressed air jets from the monocar being directed into cup-shaped recesses in plates on the rail, Figs. 7, 8 (not shown). The rail lower flange carries brake shoes, Fig. 9 (not shown), which are moved against the monocar for braking (see Division F2). An alternative rail support, Fig. 10, comprises a cap plate 67 fitting over pylon 63 with the interposition of a rubber cushion 68, a plate 71 on the rail 69 being connected to plate 67 by bolts 73, 74, the flanges of plate 71 being angle for tilting the rail on corners. The car can be additionally supported on the rail by cushions of air produced by air jets from nozzles on the car. Air cushions may also separate the coils 35 from strips 33 in Fig. 4.
Patent GB-833099-A (GB)
Title: Purification of isophorone
Inventor: FEWLASS MAURICE WILLIAM
Filed: 1957-11-12
Abstract: Coloured isophorone is decolorized by mixing the coloured p isophorone with an aromatic sulphonic acid and distilling the isophorone from the mixture.  The process preferably takes place using 0.01 to 0.5% p-toluene sulphonic acid or sulphaniliic acid by weight based on the volume of isophorone which is distilled out at a temperature between 80 DEG  and 160 DEG  C.  The isophorone may be prepared by heating acetone at a superatmospheric pressure in the presence of an alkaline catalyst and the resulting isophorone decolorized according to the invention.  The decolorization may be carried out batchwise or partly continuously using wet or dry isophorone.  Five examples and a comparative example are given.
Patent GB-155277-A (GB)
Title: Improvements in oil cups
IPC: F16N7/00
Filed: 1920-12-14
Abstract: 155,277. Madison-Kipp Corporation, (Assignees of Coles, W. G.). Dec. 16, 1919, [Convention date]. Force-feed lubricators.- The body 1 of an oil cup in which is mounted a pump is formed from a single piece of metal, the lower end 2 being of reduced diameter and threaded at 3. The upper portion is threaded to receive a cap 7 which 'beds on an inclined seat on the body 1 to prevent Leakage. The plunger 11 moves in a cylinder 17 which is a driving fit in the portion 2 and has ports 18. A stop 20, screwed, into the cylinder 17, limits the motion of the plunger and forms a seat for a spring- pressed non-return valve 21. A flexible washer 16 prevents leakage along the stem 10. The plunger is urged downwards by a spring.
Patent GB-485681-A (GB)
Title: Improvements in hydraulic transmission control mechanism
IPC: B60T11/20
Filed: 1936-12-24
Abstract: 485,681. Hydraulic brakes. HYDRAULIC BRAKE CO. Dec. 24, 1936, No. 35364. Convention date, Dec. 28, 1935. [Class 103 (i)] [Also in Group XXIX] Hydraulic master cylinder comprises coaxially arranged cylinders 30, 32 both operated by a pedal through a connection 132 engaging a piston 70, which has a sleeve 82 projecting through a wall between the cylinders and engaging the piston 102 of the cylinder 32, the pistons 70, 102 carrying pistons 94, 122 which equalize the pressure in the cylinders. Each cylinder is provided with a reservoir 12, 14 and the cylinders 30, 32 are connected to pipes 44, 58 one leading to the front-wheel brakes and the others to the rear-wheel brakes. The pressure in the two cylinders is equalized by means of the pistons 94, 122 which have abutting stems and are adapted to reciprocate in the sleeve 82 and a chamber 116 of the piston 102 respectively. The working chambers of the cylinders 30, 32 communicate by means of apertures 92, 112 respectively with the pistons 94, 122. If a pipe line 44 or 58 fails the corresponding piston 94, 122 seats at the end of its cylinder and allows the other brake to remain operative. The suction in the cylinders 30, 32 produced on brake release draws fluid from the reservoirs by apertures 36, 80 and past cups 84.
Patent GB-487692-A (GB)
Title: Method of and means for manufacturing iron by direct reduction
IPC: C21B13/08
Filed: 1936-12-30
Abstract: 487,692. Iron manufacture. KUSAKA, K., and ASHIDA, H. Dec. 30, 1936, No. 35692. [Class 72] [Also in Group XI] Sponge iron is manufactured by the direct reduction of iron ore in a rotary electric furnace comprising two inclined steel tubes 1, 2, one of which is supported within the other by bricks 12, and heating-resistances 10 being provided between the tubes. Ore is fed from a hopper 8, and passes through the inner tube 2 to an outlet chamber 9. Reducing gas is supplied to an inlet 13, passes through the spongy iron in the chamber 9, thence in part through the charge, and in part through longitudinal spaces between the bricks 12, by way of holes 14, 15, and is finally burned to preheat the ore in a feed-hopper 8. A layer of asbestos is placed within the outer tube.
Patent GB-931430-A (GB)
Title: Improvements in or relating to a rapping device for a set of collecting electrodes in an electrical precipitator
IPC: B03C3/76
Filed: 1960-10-18
Abstract: 931,430. Electrostatic precipitation. H. BRANDT, [trading as APPARATEBAU ROTHEMUHLE DR. BRANDT & CO.]. Oct. 18, 1960 [Nov. 4, 1959], No. 35768/60. Class 117. The vertical plates 1 of an electrostatic precipitator are rapped by two sets of rapping anvils 6, 7 actuated on opposite sides of the plates by hammers or spring-loaded beaters 10. The two sets of anvils are disposed respectively at onethird and two-thirds of the height of the plates. Several rows of plates are provided with a corresponding number of sets of anvils at each level.
Patent GB-1478483-A (GB)
Title: Process for the production of petroleum sulphonate
IPC: C07C309/30
Filed: 1974-08-14
Abstract: 1478483 Petroleum sulphonates MARATHON OIL CO 14 Aug 1974 [23 Aug 1973] 35784/74 Heading C2C [Also in Division E1] Monovalent cation-containing petroleum sulphonates are obtained by (i) reacting under conditions of turbulent flow in a tubular reactor (a) a hydrocarbon gas oil feedstock having an average molecular weight in the range 250-700, an aliphatic to aromatic proton ratio in the range 5 : 1 to 50 : 1, and containing at least 20% by weight of molecules containing an aromatic nucleus, which aromatic nucleus-containing molecules have an aliphatic to aromatic proton ratio in the range 3 :1 to 20 : 1, and (b) a solution of from 0À1 to 0À3 parts by weight of SO 3  in 1 part by weight ethylene dichloride (EDC), said solution being reacted with said feedstock in an amount sufficient to provide a weight ratio of SO 3  to gas oil feedstock in the range 0À05 : 1 to 0À3 : 1; (ii) withdrawing the reaction mixture from the reactor through a heat exchanger effective to adjust the temperature of the reaction mixture to a value not greater than 250‹ F.; (iii) separating the reaction mixture downstream from the heat exchanger into a product stream and a recycle stream in the proportion of at least 1 part recycle stream to 1 part product stream; (iv) recycling the recycle stream to the tubular reactor; (v) introducing said feedstock into said recycle stream upstream of the reactor to provide a mixed recycle/feedstock stream flowing through said reactor; (vi) introducing said SO 3 / EDC solution into said mixed recycle/feedstock stream in said reactor as an SO 3 /EDC solution stream, the velocity ratio of said mixed recycle/ feedstock stream to said SO 3 /EDC stream in said reactor being at least 4 : 1; (vii) reacting said product stream separated in (iii) with a basic aqueous solution containing a monovalent cation to provide a neutralized product stream; (viii) stripping EDC from the neutralized product stream; (ix) extracting the product stream from (viii) with water; and (x) recovering the product petroleum sulphonate as a lower layer from said extraction step (ix). The gas oil plus recycled reaction products stream and the SO 3 /EDC stream are preferably impinged substantially at right angles, and the nozzle through which the SO 3 /EDC stream is introduced to the gas oil plus recycled products stream is preferably shaped to form a shield to prevent the gas oil and recycled products from entering the nozzle. Apparatus is described for carrying out the process.
Patent GB-461312-A (GB)
Title: Improvements in or relating to mosaics for television and like transmitting apparatus
IPC: H01J29/41
Filed: 1935-08-14
Abstract: 461,312. Cathode-ray tubes. JONES, V. A., and BAIRD TELEVISION, Ltd. Aug. 14, 1935, No. 35848/36. Divided out of 461,197. [Class 39 (i)] A mosaic screen for television and like apparatus of the type consisting of conducting elements embedded in a flat insulating matrix, opposite ends of each element appearing on opposite sides of the matrix, is formed by coating sheets of mica or other insulating material 1 with metal, and removing the metal along parallel lines by ruling, engraving or etching so as to leave a number of strips 3, shown in cross-section ; the sheets are then built up into a pile as shown to form the screen. To obtain a common electrode other insulating sheets with continuous metal coating 2 may be interposed between the sheets carrying the strips.
Patent GB-1114382-A (GB)
Title: Goods elevator system
IPC: B66B13/06
Filed: 1965-08-20
Abstract: 1,114,382. Lifts. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 20 Aug., 1965 [24 Aug., 1964], No. 35908/65. Heading B8L. The shaft opening of a goods lift is closed by a removable hinged door 13 which is formed with openings closable by sliding doors 5, 6, motors 24 for operating the doors 5, 6 being mounted on the door 13. Loading and unloading shoots 7, 8 are adapted to be located on brackets 19 on the door 13 adjacent the openings.
Patent GB-155774-A (GB)
Title: Improvements in and relating to razor blade or like sharpening machines
IPC: B24D15/08
Filed: 1920-12-22
Abstract: 155,774. Twinplex Manufacturing Co., (Assignees of Floyd, G. G.). Aug. 18, 1917, [Convention date]. Stropping-apparatus.-A device for stropping safety razor blades is characterized by the provision of a linkwork handle 81, which in the inoperative position is housed within the hollow spindle 51 of one of the stropping-rollers. For use, the handle is pushed outwards by means of a finger-piece 71, Fig. 4, into the position shown in dotted-line. and is then bent as shown in Fig. 7, the pivots of the links 75, 76 being offset so as to limit the angle of the crank. A one-way clutch device is shown separately in Fig. 8. Four apertures 55 are formed in the hollow spindle 51 in such a position that, when the handle 81 is fully withdrawn, the ball 85 of the clutch can engage one of them and so transmit drive from the handle to the spindle 51 and the gear-wheels 5@, 56. If the handle is rotated in the opposite direction, the ball falls into a recess 84 and does not drive the shaft. The stropping-rollers are of the shape shown in cross-section in Fig. 5, the leather covering 67 being mounted on a sheetmetal drum 64, the edges of which are bent backwards at 65 and provided with teeth to hold the leather in place. To maintain their shape, the ends of the rollers take into grooved recesses formed in the sides of the gears 58, and in disks at the opposite end. The blade-holder comprises two semi-cylindrical parts 86, 96, Fig. 5, the part 96 being pulled outwards through an aperture 45 in the casing by means of a handle (not shown) to insert the blade, and is then slid back into engagement with the part 86. The blade can only be inserted or withdrawn when a lug 98 is in alinement with a slot 103 in the aperture, thereby preventing damage by cutting the leather. The operating-handle is then rotated, and the rollers strop one side of each edge of the blade. When the flat parts of the rollers allow, the blade is rotated through 180 degrees to strop the other side of each edge. This is done by intermittent engagement of the toothed segment 56, offset from the gear 58, with Geneva gearing mounted on the end of the blade-holder. The edges 21, 22 of the oval sheet-metal casing are overlapped at the bottom as shown in Fig. 5, and fastened by a lug 23, and the cup-shaped endwalls are also secured in place by lugs and grooves 27, 28. A removable cover 33 is sprung over an oval aperture 31 in the top of the casing.
Patent GB-1523609-A (GB)
Title: Exposure meter circuit
IPC: G03B7/10
Filed: 1975-09-02
Abstract: 1523609 Exposure meters ASAHI KOGAKU KOGYO KK 2 Sept 1975 [3 Sept 1974] 36020/75 Heading G2X An exposure meter circuit comprises a first transistor 4 having a current source A connected to its collector and an emitter-follower circuit B connected between its collector and base to form a feedback circuit, and a second transistor 21 having a similarly connected circuit source D and feedback circuit E; the outputs at the collectors of the first and second transistors 4 and 21 being connected through respective emitter-follower circuits C and F and operational amplifiers 11 and 13 to opposite sides of an indicator meter 12. The current sources A and D and resistors 7, 10, 16, 19 in circuits BCFE may be set according to exposure factors. For instance if current source A is a photodiode and resistors 7 and 19 are set according to diaphragm aperture and film speed, respectively the circuit makes an APEX (i.e. logarithmic) computation and meter 12 indicates exposure time. Alternatively if sources A and D provide constant currents, resistor 7 is a photo-conductor and resistors 10 and 19 are set according to film speed and diaphragm aperture respectively meter 12 will again indicate exposure time. Similarly the meter can be used to indicate subject brightness or diaphragm aperture or can be used in a system in which the needle is aligned with a reference mark when the correct factors are set.