baber/WOPTO huggingface dataset:
Patent GB-365945-A (GB)
Title: Improvements in the recovery of sulphuric acid from the acid sludge of oil refineries
IPC: C01B17/92
Filed: 1931-05-29
Abstract: Ammonium sulphate; calcium phosphates.--Sulphuric acid is recovered from acid sludge obtained in the refining of petroleum &c. by treating the sludge with an aqueous sulphuric acid solution of ammonium sulphate in such an amount that the ammonia content of the resultant mixture is at least 0,8 mols. per mol. of sulphuric acid whereby the carbonaceous and resinous materials in the sludge are caused to coagulate and are separated.  Preferably 0,8-1,2 mols. of ammonia per mol. of sulphuric acid is used, the operating temperature being such that all the ammonium sulphate or <PICT:0365945/III/1> bisulphate formed remains in solution.  The resulting sulphuric acid ammonium sulphate liquor may be used to treat rock phosphate preferably after its acid content has been increased by the addition of strong sulphuric acid.  The resulting superphosphate may be neutralized by the addition of liquid ammonia to obtain a fertilizer. Anhydrous liquid ammonia is sprayed from a nozzle 2 and sulphuric acid or sulphuric acid ammonium sulphate liquor obtained in the process is sprayed from a lower nozzle 6 into a packed tower 1.  The resulting aqueous sulphuric acid solution of ammonium sulphate passes continuously to a mixing vessel 8 to which acid sludge is also supplied continuously by way of conduit 9.  The vessel 8 is provided with cooling coils 11.  The liquid overflows from the mixing vessel through a conduit 10 into a settling tank 5 where resinous and carbonaceous material is removed by skimming.  A portion of the residual solution is returned by a pump 7 and conduits 4 to the spray 6 of the tower 1. The sulphuric acid ammonium sulphate liquor not thus recirculated is withdrawn through a conduit 13.  If the packing in the tower 1 becomes clogged it may be flushed with water from a conduit 14.ALSO:Sulphuric acid is recovered from acid sludge obtained in the refining of petroleum &c. by treating the sludge with an aqueous sulphuric acid solution of ammonium sulphate in such an amount that the ammonia content of the resultant mixture is at least 0,8 mol. per mol. of sulphuric acid whereby the carbonaceous and resinous materials in the sludge are caused to coagulate and are separated.  Preferably 0,8-1,2 mols. of ammonia per mol. of sulphuric acid is used, the operating temperature being such that all the ammonium sulphate or bisulphate formed remains in solution.  The resulting sulphuric acid ammonium sulphate liquor may be used to treat rock phosphate preferably after its acid content has been increased by the addition of strong sulphuric acid.  The resulting superphosphate may be neutralized by the addition of liquid ammonia to obtain a fertilizer.
Patent GB-1261155-A (GB)
Title: Slit or spot lamp microscope
Inventor: GAMBS PAUL FREDERIC MARIE
IPC: G02B27/00
Filed: 1970-04-03
Abstract: 1,261,155. Slit lamp microscope. P. F. M. GAMBS. April 3, 1970 [Sept.30, 1969], No. 15871/70. Heading G2J. A slit or spot lamp microscope comprises a slit or spot lamp 1 adapted to cast a slit or spot image on to an object to be examined, for example an eye, and a stereomicroscope 2 for observing the image with variable magnification, the lamp 1 and the microscope 2 being mounted on a common vertical axis 3, and the end portion 22 of the optical system of the lamp 1 comprises two reflectors 19 and 20 which impart a double-bent path to the beam 10 casting the slit so that the ultimate portion 10a of the beam intersects the line of the antepenultimate portion 10c to determine the point 25 where the cast image of the slit is formed, the part 22 being rotatable about the axis 10c. The lamp 1 comprises a light source 4, the radiation from which is directed by lenses 5, 6 and 7 and reflectors 8 and 9 through a slit 12, whence it is directed by lens 13 and reflector 18 into the part 22. The horizontal incidence of the beam 10a at an eye placed at 25 is variable by rotation of the whole apparatus about the axis 3, and both horizontal and vertical incidence are varied by rotation of the part 22 about the axis 10c. The image at 25 is viewed by the stereomicroscope 2 which comprises objectives 27, 28, image-erecting prisms 33, 34 and eye-pieces 35, 36. Magnifications may be selected by rotating drum 37 about an axis normal to the optical axis 26, the drum 37 having two pairs of apertures 38, 39, two pairs of diverging doublets 40, 42 and two pairs of converging doublets 43, 44. A photographic device 29 may be provided between the drum 37 and the image-erecting prisms, and a flash source 15 in the lamp 1. In a modification, Fig. 5, for examining the eye of a recumbent patient, the slit lamp comprises a light source 54, a condensing system 55 a slit arrangement 56 rotatably mounted in bearings 57 and a part 62, corresponding to the part 22 of the above-described embodiment, rotatable about axis 63. The lamp is carried by an arm 51 which is mounted, together with the arm carrying the microscope (not shown), for rotation about a vertical axis coincident with the optical axis of the microscope and passing through the point 53 at which the slit image is cast upon the eye.
Patent GB-932717-A (GB)
Title: Apparatus and method for shaving ribs or fins from an elongated work piece moving along a pass line
IPC: B23D3/04
Filed: 1960-05-05
Abstract: 932,717. Broaching, rolling, making rods and wires. COPPERWELD STEEL CO. May 5, 1960 [June 8, 1959], No. 15911/60. Classes 83 (2), 83 (3) and 83 (4). Clad rods 11a e.g. aluminium cladding and a ferrous core, are drawn through rolls 13 by a capstan, and fins 17 produced during the rolling are removed by a shaving head 18, the rod being guided by a roller guide 20. Rolls 13 have vees 16a which produce a thickened base 17a on fins 17. Shaving head 18 comprises a bracket 23 fixed to the machine 10, a plate 26 fixed to the bracket, a tool holder bolted to plate 26, at 31, and adjustable relative thereto by screws 29, slides 37 radially adjustable by screws 35, and shaving cutters 44 clamped to slides 37.
Patent GB-1161913-A (GB)
Title: Improvements relating to Full Wave Rectifier Circuits.
Inventor: KIRYLUK WLODZIMIERZ
IPC: H02M7/162
Filed: 1967-04-06
Abstract: 1,161,913. A.C. to D.C. converter. INDUSTRIAL INSTRUMENTS Ltd. 5 April, 1968 [6 April, 1967], No. 15914/67. Heading H2F. An A.C. to D.C. converter comprises a bridge rectifier SCR1, SCR2, D1, D2 (Fig. 1); in which the diodes D1, D2 are connected as shown, whereby they will pass current which continues to flow through a smoothing choke L1 and the load (e.g. batteries) after the thyristors SCR1, SCR2 are shut off and effectively act as the freewheel diode of known arrangements. The phase angle of the thyristors is governed to control the rectified voltage magnitude, by a control circuit (Fig. 2) in which the output voltage is compared with a reference voltage to produce an error signal, which is used to adjust the said phase angle. In addition, the load current is limited by the setting of a potentiometer RV3 which takes over control of the phase angle when the current reaches a certain limit value. The control electrodes of the thyristors are connected to transformer terminals MNOP (Fig. 2), which are energized when a unijunction transistor UJT1 conducts. Current in C1 from TR1 determines the rate of rise in volts across C1 and hence the time after the application of voltage across UJT1 when UJT1 fires. The phase delay angle is therefore determined by TR1 collector current which is dependent upon its base voltage. This voltage is determined by the rectifier output voltage sensed by a potential divider RV1 or RV2, R2, D6, R3 and is compared at the base of TR2 with a reference voltage of a Zener diode Z2. The error signal determines the base voltage and hence the phase angle of operation. The output voltage level is normally preset by RV1 or by RV2.
Patent GB-915346-A (GB)
Title: Computer-type golf game
IPC: A63B69/36
Filed: 1961-05-31
Abstract: 915,346. Games practice apparatus. SPEISER, M. R. May 31, 1961 [June 8, 1960], No. 19593/61. Class 132 (2). In a golf game or practice apparatus the ball is driven from a tee 20 towards a screen 29 placed in front of a back cloth 14 and a dynamic microphone 21 generates a signal upon occurrence of a sound of contact between a club head and a ball, impact of the ball on screen 29 causing it,to distort and permit at least one of photo-cell units 26, 27, 28 to generate a signal, the light beams being normally blocked by the screen. A time delay unit places a thirty milli-second delay on the operation of the timing circuit which comprises a computer operating a binary circuit to indicate length of drive on indicator 17. Cords 35, 36 connect screen 29 to switches (not shown), which indicate a drive to left or right of the fairway, the information being fed to tracing lights 105, 106, 107 on indicator 16 to give a visual indication of the flight of the ball.
Patent GB-564972-A (GB)
Title: Improvements in and relating to electric converting apparatus
IPC: H02M7/62
Filed: 1943-09-29
Abstract: 564,972. Converters. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Sept. 29, 1943, No. 15992. [Class 38 (ii)] In converting apparatus wherein a D.C. source 10 periodically energizes the primary 13 of a transformer through a vibratory switch 20, the secondary 14 which supplies the A.C. load circuit 11 has in series with it a compensating winding 15 closely coupled with the primary 13 and a saturable magnetic shunt 17, 18 provides a loose coupling between the secondary and the other windings. The compensating winding 15 introduces a magnetomotive force in the magnetic circuit of the primary tending to prevent the rise of primary current during the operation of the switching means and so helping to prevent sparking at the switching contacts even when the supply voltage varies considerably. The transformer core may consist of two sets of E-shaped punchings placed with their legs abutting excepting for some of the lower set of punchings which are reversed so as to provide the magnetic shunt 17, 18. A condenser 19 enables tuning to be effected. Specification 645,854 is referred to.
Patent GB-483433-A (GB)
Title: Improvements in carton sealing machine
IPC: B65B61/18
Filed: 1937-06-09
Abstract: 483,433. Closing cartons. PNEUMA- - TIC SCALE CORPORATION, Ltd. June 9, 1937, No. 16027. Convention date, April 21. [Class 94 (i)] In the folding down and sealing of the top flaps of filled cartons, a tearing strip is interposed between the flaps. The carton may be of the kind shown in Fig. 6, having end flaps 18, 20 and side flaps 26, 28. The flap 26 is provided with perforations 19 over which the tearing strip 25 is placed, and the flap 28, which is ultimately folded down over the strip and the flap 26, is provided with a weakened line 23. The cartons arrive from a filling machine and are fed along the base 48 by carrier arms 16 on a chain 17. The end flap 20 is folded down by a rotary kicker, which follows with it until it is tucked beneath a horizontal rail, which also folds down the flap 18. The flaps 26, 28 are spread out horizontally, and pass beneath gumming wheels 32, which coat the upper surfaces of the flaps. The flap 28 is supported by a rail, and the flap 26 is supported by a lower gumming roll 34, on a resiliently mounted arm 36, which applies gum to the inner edge of the lower surface of the flap upon the surface to which the tearing strip is to be applied. The flap 26 is turned over on to the flaps 18, 20 by a curved rail 50 before arrival at the strip applying station. The strip, of fabric, reinforced paper, &c. is drawn from a roll 54 around a rod 60 and over idle rolls 62, 64, between guides 66, 68 by a feed roll 70. The feed roll is intermittently rotated by a cam 78 and roll 80 operating links 82, 86, 90, the latter of which is loosely pivoted on the shaft 74, and carries a fibre plug 94 engaging a disc 96 integral with the feed roll 70. This causes the roll to be intermittently rotated in a clockwise direction and to feed the strip downwards into the path of the carton. A knife 104 co-operates with a shearing edge 108 to sever a length from the strip. The forward end of the severed length is fed into a position in which it is engaged by the carton and is applied thereto by a pressure roll 120. A curved blade 150 turns over the flap 28, and the closed carton is fed away between pressure belts which ensure adhesion. In order to prevent the feed of the strip in the absence of a carton, a feeler 130, normally spring urged into the path of the cartons, is moved to raise a latch 132, by means of a shaft 136 and links 142 .. 144. If no carton is presented, the latch remains down and engages a beak 134 on the arm 82 and prevents the actuation of the feed roll 70.
Patent GB-600581-A (GB)
Title: Personal sanitary convenience, more especially designed for babies
IPC: A61F5/451
Filed: 1945-06-25
Abstract: 600,581. Personal sanitary conveniences. MEGIERMAN, S. June 25, 1945, No. 16177. Convention date, Dec. 16, 1944. [Class 26] A personal sanitary convenience, more especially for babies, consists of a small cup 4, placed over the genital organ, fixed to one corner of a triangular piece of textile 1, which passes between the legs around the buttocks to the waist, where it is joined to two elastic bands 2-2, which are attached to the cup 4 by buttons, from which cup a flexible pipe 6 leads to a collecting vase.
Patent GB-656596-A (GB)
Title: Improvements in stand-by electrical supply apparatus
Inventor: HILLS ERIC GEORGE
IPC: H02J9/06
Filed: 1948-08-10
Abstract: 656,596. Substituting supply sources. JONES & CO. (ENGINEERS), Ltd. W. Aug. 10, 1948, No. 16196/50. Divided out of 656,580. Drawings to Specification. [Class 38 (iv)] The subject-matter is the same as contained in Specification 656,580, but the claims differ.
Patent GB-407311-A (GB)
Title: Process for the manufacture of sodium nitrate
IPC: C01D9/12
Filed: 1932-06-08
Abstract: The production of sodium nitrate from calcium nitrate and sodium chloride is effected by alternately passing sodium chloride solution, water, calcium nitrate solution, water, and so on through a series of receptacles in which base exchanging substances are contained. Passage of calcium nitrate yields a sodium nitrate solution, and passage of sodium chloride regenerates the base-exchanger and yields a solution of calcium chloride.  In using sea water as the source of sodium chloride, potassium and magnesium nitrates may be obtained as by-products by fractional separation from the sodium nitrate solution.
Patent GB-164933-A (GB)
Abstract: 164,933. Watkiss, H., and Upton, A. F. April 28, 1920. Spring devices. - The upper ends of motor-. cycle front forks act on the free end e<1> of a leaf spring e, the fixed end of which is secured to a forwardly-extending block f rigidly carried by the steering - column. The end e<1> is preferably engaged by rollers h, h<1> mounted between side plates p<1> pivotally mounted on a pin l. Stiffening - tubes n are provided, and the spring is protected by a cover plate p.
Patent GB-161872-A (GB)
Title: Improvements in and relating to the construction of boxes, cabinets and the like
IPC: B65D43/26
Filed: 1920-06-18
Abstract: 161,872. Betjemann & Sons, Ltd., G., and Andrew, H. V. June 18, 1920. Contents, facilitating access to. - In a box, cabinet, &c., in which a hinged lid d<1> and hinged front d<2> are connected by links b, c with a lever a pivoted on the side of the box &c., the lid and hinged front are arranged to open simultaneously to the horizontal position. When two opposite sides of the box &c. are to be opened simultaneously with the lid, this is made in halves and the link motion is duplicated.
Patent GB-574881-A (GB)
Title: Pulverulent compositions and pellets and tablets made therefrom
IPC: B01J2/00
Filed: 1942-11-23
Abstract: Pulverulent compositions containing substances wholly soluble in water but insoluble in brine, or containing such substances in admixture with water-insoluble substances, are obtained by admixing a "brine suspension" of the substance with an aqueous emulsion of a waxy substance and with an emulsion-breaking agent, filtering, washing if necessary, and drying.  The expression "brine suspension" covers a suspension in an aqueous solution of any salt inhibiting substantial solution of the substance.  The process is especially applicable for obtaining compositions containing basic dyestuffs, such as Rhodamine B or Auramine O, with or without water-insoluble azo pigments or substances having a detrimental effect on the human skin, as by causing dermatitis or persistent staining.  Pellets or tablets which do not generate dust in further handling are obtainable from such compositions by compression in moulds in known manner. Specified waxy substances are paraffin wax and tallow.  In an example, an aqueous emulsion of paraffin wax, made with the aid of ammonium stearate and peptised casein, is stirred into a suspension of Rhodamine B in an aqueous solution of common salt containing the condensation product from cetyl alcohol (1 mol.) and ethylene oxide (17 mols.) and an aqueous solution of N : N1-diphenylguanidine hydrochloride is then stirred in as emulsion-breaking agent, whereupon the product is filtered off, washed with an aqueous solution of common salt, dried at 40 DEG  C., crushed or lightly ground, and compressed into pellets.
Patent GB-128103-A (GB)
Title: An Improved Veneering Tape or Strip.
IPC: B27D1/10
Filed: 1918-10-11
Abstract: 128,103. Marks, E. C. R., (Ideal Coated Paper Co.). Oct. 11, 1918. Veneering. - Tape for connecting together the edges of veneers comprises a strip 5 of absorbent paper or fabric coated with two layers 6, 7 of adhesive, the inner layer being less adhesive than the outer, whereby, when veneers have been affixed to a surface, the strip 5 may be easily peeled from the adhesive layer 7 after applying water to it. The adhesive layer 7 is preferably waterproof and adapted to be softened by heat, such as a mixture of asphalt, mineral oil, and gutta-percha, rubber, balata, or other elastic material, and the inner layer 6 may be of starchy material or gum, or when it is required to be impervious to water, of an emulsion of starch, vegetable wax, borax, and China-clay. Grit or abrasive matter may be incorporated in the layer 6 when it is intended to remove the adhesive layer 7 from the veneers by abrasion.
Patent GB-288857-A (GB)
Title: Improvements in or relating to suspension clamps for electric conductors
IPC: H02G7/05
Filed: 1927-06-23
Abstract: 288,857. Hofmann, J. W. June 23, 1927. Insulators.- Relates to a metal trough-like holder B which serves for connecting an electric cable A to a chain of suspension insulators D. The invention consists in making the holder B with ends C which are elongated in an upward direction, so that these ends are brought nearer to the insulators. Thus if an are discharge or a flash-over occurs. it starts from the ends C and allows time for an automatic switch to disconnect the line before the discharge can reach the cable. The ends may be made spherical to prevent premature discharges and, providing a greater body of. metal, to retard possible melting of the holder.
Patent GB-686193-A (GB)
Title: Improvements relating to hoisting cradles
Inventor: FOWLER JAMES OWEN
IPC: B66C1/24
Filed: 1950-07-05
Abstract: 686,193. Lifting cradles. FOWLERS DAIRY DEVELOPMENTS, Ltd. July 4, 1951. [July 5, 1950] No. 16742/50. Class 78 (iv). A hoisting cradle for crates of bottles, has two members 141 and 17 for the hoisting hook so that the cradles may be raised vertically or tilted so that it may be placed manually on its side. The cradle comprises base members 11 and members 10 and retaining members 18 and 20. One member 141 comprises a pin secured centrally between two transverse members secured to two longitudinal members. The member 17 also comprises a pin secured to extensions 16 of the transverse members. Specifications 604,324, [Group VI], and 632,483 are referred to. The Provisional Specification includes struts hinged near the upper end of bars 18 which are intended for the cradle to rest upon in the tilted position.
Patent GB-1205206-A (GB)
Title: Improvements in or relating to digital magnetic recording
IPC: G11B5/02
Filed: 1969-03-31
Abstract: 1,205,206. Non-return-to-zero magnetic recording system. HONEYWELL Inc. 31 March, 1969 [16 April, 1968], No. 16793/69. Heading G4C. [Also in Division H3] A NRZ recording system is characterized in that between adjacent blocks of data, referred to as " records," the recording current is allowed to return to zero and in that it is reduced to zero relatively slowly-compared with the normal transitions-so that only a very small (less than 3% of the normal) signal is produced during reading. A seven-track tape recorder is described, Fig. 1, successive input words being registered 25 to control the write heads 12 in the usual way. A parity bit produced 28 for each track, is recorded at the end of each record, which ensures that the final current in each head is always in the same direction and then when a write control signal ceases the recording head current produced under the control of register 25 is cut-off but it is immediately replaced by current from a ramp-generator and progressively reduced to zero. A transistor circuit (Fig. 3, not shown) see Division H3, showing how a ramp generator can be switched into operation to control the head current at the end of a record, is described.
Patent GB-117559-A (GB)
Title: Improvements in and relating to Electrically Heated Sheets, Rugs, Mattresses, Foot Warmers, and the like.
Inventor: DAVIDSON CHARLES SMITH
IPC: H05B3/00
Filed: 1917-11-17
Abstract: 117,559. Davidson, C. S. Nov. 17, 1917. Mattresses.-The resistance wires in electricallv-heated mattresses &c. are fixed at intervals to the material of the sheet &c. so that the wires are in a state of tension. If the wires break the ends separate and prevent the formation of an arc. As shown in Fig. 1, asbestos tapes b are sewn to the sheet a, the resistance wires c which are crimped being attached to the tapes b at points d between which the wires are strained to .produce tension. The wires are covered by asbestos tapes e sewn at their edges to the sheet under the wires, a covering f being sewn to the sheet a along the lines g between the tapes. The whole is enclosed in a removable cover l. In a modification the wires c are straight and are held between springs at the ends in a state of tension.
Patent GB-265852-A (GB)
Title: An improved heat economy device for use with domestic gas rings and for like purposes
IPC: F24C15/10
Filed: 1926-07-06
Abstract: 265,852. Lake, V. D. July 6, 1926. Heat distributers.-A heat economy device for use with gas rings and the like comprises a substantially annular hollow metal body a of substantially triangular cross-section the narrowest part of which forms a central opening b through which hot gases pass to impinge upon the base c of a utensil to be heated. The body a is preferably of larger diameter than the utensil which is raised a short distance above the upper surface of the body a by means such as downwardly bent tongues f on radial arms e secured to the outer periphery of the body a. The arms c also may be provided with one or more integral or separate rings g arranged concentrically and slightly above the opening b. The base d of the body a preferably is flat so that it may be placed upon the rails of a gas stove, or the body a or the arms e may be provided with integral or separate lugs i adapted to rest on the supports of a gas ring h or provided with means such as rings j for clipping on to the gas ring h.
Patent GB-210021-A (GB)
Title: Improvements in ice cream making machines
IPC: A23G9/18
Filed: 1923-07-02
Abstract: 210,021. Pimbley, J. P., and Perkins, L. P. July 2, 1923. Ice-cream freezers comprise an inner fixed cooling-element c and an eccentrically arranged cream-container d rotated about the axis of the element c. In the construction shown the creamcontainer is also simultaneously rotated about its own axis. A four-bladed or single-bladed scraper is provided to strip the cream from the outside surface of the element, which may be the evaporator of a compression or absorption plant.