baber/WOPTO huggingface dataset:
Patent GB-1077985-A (GB)
Title: Apparatus for reading
IPC: G06V10/12
Filed: 1965-05-14
Abstract: 1,077,985. Automatic character reading. FARRINGTON ELECTRONICS Inc. May 14, 1965 [June 8, 1964], No. 20539/65. Heading G4R. In a character reading apparatus the character is scanned to produce two or more sets of signals representing the character, the sets being relatively delayed so as to represent overlapping versions of the character, these signals being applied to logical circuitry to produce signals indicating the presence or absence of certain features. The character may be scanned by being moved horizontally in front of a lens 24, Fig. 1, which throws an image on to a slotted disc 27 co-operating with a slotted plate 31. This plate has two slots each associated with a photo-cell 36, 38 giving signals representing the displaced images of the character R1, R3, Fig. 2. Alternatively there may be only one slot in plate 31 and the displaced image signals may be produced by a delay circuit or by briefly storing and re-reading. A lamp 39 projects a beam of light through the slots of disc 27 and a hole 41 in plate 33 on to photo-cell 42 to give pulses indicating the end of each scan. The signals representing the displaced images are gated together to produce signals representing the presence of one image but not the other. This is indicated, for example, as the shaded areas of Fig. 2 and the black areas of Figs. 5a, 5b. The circuit of Fig. 6 (not shown) extracts long vertical features and round features on the right and left of the character. The scan pulses are integrated on a capacitor and used to set a circuit after seven scans to indicate that the centre of the character has been crossed. This indication is used to associate the features with the right or left hand side of the character. Signals indicating the presence and absence of these features are combined to identify the character. In a modification, the features are distributed according to their position of occurrence into five horizontal zones and seven vertical zones, Fig. 8 (not shown). Magnetic sensing may be used instead of photo-electric, the reading head having two slots or a head with one slot may be used, together with a delay circuit to produce the displaced image signals.
Patent GB-148570-A (GB)
Title: Contact finger for rheostats and other similar electrical apparatus
IPC: H01H11/06
Filed: 1920-07-10
Abstract: 148,570. Soc. Anon. Constructions Electriques de Belgique, (formerly Compagnie Internationale d'ElectricitÚ). April 2, 1919, [Convention date]. C o n t a c t s . - The fixed contacts 1 of electric rheostat switches are posi tively fixed at on end to a contact rod 4 and at the other end have a spur 2 engaging a hole in the insulating plate. The engagement with the contact rod 4 is such as to prevent the latter from turning when operating upon the connexions. A beak 3 on the contact plate may engage a slot in the side of the rod, or the rod may be slotted on the top to take the end of the contact.
Patent GB-909202-A (GB)
Title: Improvements in or relating to refrigerators
IPC: F25D17/06
Filed: 1961-06-08
Abstract: 909,202. Refrigerators. GENERAL MOTORS CORPORATION. June 8, 1961 [July 8, 1960], No. 20736/61. Class 29. In a refrigerator in which air from freezer and storage compartments 28, 30 is circulated by a blower 121 over a single evaporator 54 located between them, the air from the respective compartments flows first in contact with different parts of the evaporator to give a more even frost distribution. As shown, air from compartment 30 flows through apertures 44 near the front of the ceiling 34 into channels 42 cut in the underside of an insulating slab 36 and flows rearwardly therethrough. The channels taper rearwardly towards rear corner apertures 48 in the slab and its cover 50. The evaporator 54 lies between this slab and the floor 90 of compartment 28 and the space in which it lies is divided by vertical horizontallyextending partitions 80 into two side channels 88 and a central channel 92. Air from apertures 48 flows forwardly through channels 88 over the edge parts of the evaporator and, at the front, joins the air from the freezer compartment, the resulting stream flowing rearwardly through channel 92 from an aperture 94 in the rear of which it is withdrawn by blower 121. This exhausts through passages 129, 145 to compartments 28, 30 respectively. The refrigerating system and blower motor are controlled by a thermal element 139 responsive to air entering compartment 28 and the flow into compartment 30 is controlled by a valve 153 responsive to the temperature of that compartment. The evaporator is defrosted by a heater 72 in contact therewith and energized by a timer. In a modification, air from compartment 30 passes through the ceiling and insulating slab to contact first the underside of the evaporator and then flows through it to join the air from compartment 28, the resulting stream flowing rearwardly over the evaporator.
Patent GB-625402-A (GB)
Title: Improvements in or relating to electrical apparatus for soil warming
IPC: H05B3/06
Filed: 1947-07-31
Abstract: 625,402. Soil-warming installation. GENERAL ELECTRIC CO., Ltd., and COVER, W. July 31, 1947, No. 20808. [Class 6(ii)] [Also in Group XI] A soil-warming installation consists of one or more buried current-carrying wires 1 attached to end frames 4. Each frame comprises parallel partly-buried uprights 5 and horizontal bars or tubes 6, one above and the other below ground level. The wires run from terminals on the upper bar downwards and beneath the tubes 6.
Patent GB-1172408-A (GB)
Title: Lespecapitoside
Inventor: CERVELLE CLAUDE MARIE HENRI
IPC: C07D311/40
Filed: 1967-05-04
Abstract: 1,172,408. Lespecapitoside. C. M. H. CERVELLE. 4 May, 1967 [5 May, 1966; 28 July, 1966], No. 20820/67. Heading A5B. Lespecapitoside, a pale yellow powder having the empirical formula C 21 H 20 O 11 -H 2 O and the following properties:-(i) M.pt. of 287- 288C. by the Maquenne block method; (ii) M.pt. of 250C. by the Kofler bench method; (iii) a solution in 96 alcohol containing 1 gm. lespecapitoside per 50,000 gm. solvent has an U.V. absorption spectrum with maxima at 260,270 and 356 mÁ; (iv) on rising chromatography gives a single spot of R f : 0.46 in Partridge's butanol-acetic acid mixture, 0.39 in acetic acid-water mixture (15:85 V/V) and 0.72 in acetic acid-water mixture (60:40 V/V), said spot being bright yellow when developed with aluminium trichloride and having a pinkish brown fluorescence when viewed in U.V. light, may be prepared by (a) drying leaves of lespedeza capitata harvested in the months of June, July or August, (b) powdering said leaves, (c) extracting the powder obtained in (b) twice with methanol, (d) evaporating the solution obtained in (c) to dryness in vacuo, (e) taking up the residue in (d) in boiling water, (f) extracting the aqueous solution obtained in (c) with ethyl acetate, (g) evaporating in vacuo the solution in ethyl acetate obtained in (f), (h) taking up the residue obtained in (g) in boiling 30 alcohol and (i) allowing the alcoholic solution obtained in (h) to crystallise by cooling. Hypoazetemic and antiatheromatous pharmaceutical compositions comprise lespecapitoside in admixture with a solid or liquid diluent or carrier. The compositions may be in the form of tablets, suppositories, cachets, capsules, ampoules or drinkable or injectable solutions.
Patent GB-599130-A (GB)
Title: Improvements relating to coal extraction
IPC: B65G15/60
Filed: 1943-12-13
Abstract: 599,130. Endless-belt conveyers; screw conveyers. MILIK, R. Dec. 13, 1943, No. 20858. [Class 78(i)] [Also in Group XXI] In a system of extracting coal from a seam two belt conveyers operate alongside each other in a cross tunnel between two gates, each belt extending partly in the tunnel and partly in a gate and operating first to convey coal from the long-wall face to one of the gates as the coal is shovelled on to the belt by an advancing automatic shovel and loader in front of the belt and to advance therewith, and then to convey filling material from .the other gate into the space occupied by a previously removed section of the seam and to retreat progressively with the filling, while the other belt is performing simultaneously the other duty. The section A, Fig. 1, of coal to be removed is prepared by slicing the long-wall face horizontally at the floor and roof levels and by inserting vertical props 9, Fig. 3, and horizontal roof beams 10. As each beam 10 becomes accessible by removal of the coal, its far end is forced against the roof by the insertion of a second prop. The belt 13 extends along the face from the loader 12 to a station 14 where it is turned through 90 degrees in order that it may be passed along the gate 3 to an end station 15. While the belt 13 is conveying the coal to tubs 17, the other belt 18 is being fed with waste material from a truck 20 by a hoisting mechanism 19 and is filling the space from which the coal was removed in a previous operation. When the section A has been removed, the loader is detached from the belt, reversed end for end, placed in a space cleared for it at the adjacent end of section B and connected to the end of the belt,18 which is then wholly in the gate 2. The belt 13 is now used for filling in the cleared space with material from trucks 17 in the gate 3. Each end station 15 comprises a wheeled truck 44, Fig. 6, on which is slidably mounted a carriage 43 carrying the end roller 42 of the belt. Springs 45 maintain tension on the belt. The truck is anchored by the engagement of shoes 51, Fig. 7, with the rails 46. These shoes are mounted on levers 47 which are pivoted to the truck and extend upwards to engage a pair of guide bars on the carriage. Since the bars are inclined to the centre line of the truck, as the carriage moves the levers are rocked and the grip on the track is increased. Periodic adjustment of the belts and end stations is effected by winches 29. The loader 12 is described in Specification 599,185 and the angle station 14 in Specifications 590,008 and 599,182.
Patent GB-662307-A (GB)
Title: Clutch and brake structure
IPC: F16D51/10
Filed: 1949-08-11
Abstract: 662,307. Clutch-brake combinations. CLEVELAND PUNCH & SHEAR WORKS COAug. 11, 1949 [Sept. 1, 1948], No. 20932/49- Class 80 (ii) [Also in Group XXXIV] A clutch-brake combination, arranged between a belt-driven flywheel 6 and the crankshaft 2 of a press, &c., comprises clutch-shoes 11 and brake-shoes 12, centrally pivoted on oppositely directed eccentric portions 29, 30 of a levermember, rotatable on a pin 22 adjustably carried by forked arms of a boss 10 keyed to the driven shaft 2, said eccentric-lever member 29, 30 having opposed unequal lever-arms 27, 28, the former, 27, linked to pistons 36 sliding in cylinders formed in the driven boss 10, and the latter, 28, connected to the boss 10 by pre-compressed springs 35, which, in the absence of fluid-pressure on the pistons, turn the eccentric-lever member 27, 30 to expand the brake-shoes 12 into engagement with a fixed drum 18 and simultaneously retract the clutch-shoes 11, whilst application of fluid-pressure to the pistons 36, through a central shaft-passage 39, overcomes the springs, turning the eccentrics in the opposite direction to retract the brake-shoes 12 and expand the clutch-shoes 11 into engagement with a clutchdrum 7 bolted to the driving flywheel. The ends of the bearing-pin 22 of the eccentrics are eccentric to the central eccentric-lever supporting portion to provide shoeadjustment by turning the pins in their housing, locking being effected by a screw 56 passed through a pinned arm on the pin 22 and entered into one of a series of holes 58 tapped in the forked arms of the boss 10. Spring-detents 52 engage radial guide-slots in the heads of pins 50 carried by the shoes 11, 12 to centralise the shoes and prevent tilting when disengaged. To facilitate dismantling the clutch-drum 7 is larger than the brake-drum 18. Specifications 653,579 and 653,661 are referred to.
Patent GB-644693-A (GB)
Title: Device for removing sediment from aquaria
IPC: A01K63/10
Filed: 1948-08-09
Abstract: 644,693. Air lifts. MELAS, G. M. Aug. 9. 1948, No. 20937.. [Class 102(ii)] [Also in Groups I and,VI] A device for removing sediment from aquaria comprises an elongated air-duct 1 carrying at its lower end an upwardly directed suction sleeve 2 and ejector nozzle 4 and at its upper end an exhaust pipe 3, an open ended filter sleeve 13, gathered in at its ends, being secured by elastic rings 14 between the exhaust pipe 3 and ejector nozzle 4. In use, the device is arranged upright in a tank A and resting on sediment S, so that when air is ejected from a flattened end 1a of the duct 1 by pressure on a bulb 10, an upward current of sludge and water is induced in the suction sleeve 2 and ejector nozzle 4, the sludge being then deposited in the sleeve 13 and excess air escaping, after aerating the water, from the water surface and from the pipe 3.
Patent GB-992774-A (GB)
Title: A system for controlling the rate of advance of a recording medium
IPC: H02P23/00
Filed: 1963-05-27
Abstract: 992, 774. Automatic speed control systems. AMPEX CORPORATION. May 27, 1963 [May 28, 1962], No. 21115/63. Heading G3R. The invention relates to a pulse-signal tapespeed-control-system, particularly for synchronising magnetic tape speed with a rotary head drum. The field of a capstan motor 12 is energized from the output of a pulse discriminator 24 which compares references pulses from a source 18 (such as transducer associated with the head drum) with pulses from a transducer 17,19 representing the capstan speed, or position signals on the tape 13. When position signals are present on the tape, "AND" circuit 49 operates switch-circuit 23 to block signals from transducer 17, 19, whereby the system is automatically controlledby the tape signals. Discriminator circuit:- In the synchronized state, successive pulses are applied to counter 24 from the reference source 18 and the switch-circuit 23, and pass through AND gates 28, 32 to trigger flip-flap circuit 26 alternately between its two stable states. If e.g. the tape speed increases so that two successive pulses arrive from switch 23, the signal through the delay circuit 43 operates AND gate 33 to trigger flip-flop circuit 27 so that gates 28, 32 are blocked until the correction is sufficient to cause two succeeding pulses from circuit 18 to reset flip-flop 27.
Patent GB-587050-A (GB)
Title: Process for the manufacture of acridine derivatives
IPC: C07D219/12
Filed: 1944-10-30
Abstract: Acridine derivatives are manufactured by condensing 3-halogenanilines with 2-halogen-5-methoxybenzoic acids or esters thereof, in the presence of potassium carbonate, to give 5-halogen - 41 - methoxydiphenylamine - 21 - carboxylic acids or esters, and subjecting these, directly or after conversion into the corresponding amides or dialkylaminoalkylamides, or, in the case of the acids, into their esters or chlorides, to prolonged heating with chlorides of oxygen-containing mineral acids to effect cyclization to the corresponding 9-substituted derivatives of 2-methoxy-6-halogenacridines.  When the free acids or their chlorides are cyclized, the substituent in the 9-position is a chlorine atom, which is then replaced by a dialkylaminoalkyl group by condensation with a dialkylaminoalkylamine.  In examples: (1) 6-bromo-3-methoxybenzoic acid is heated with 3-chloroaniline in boiling isoamyl alcohol in the presence of potassium carbonate and copper powder to produce 5 - chloro - 41 - methoxy - diphenylamine-21-carboxylic acid, which is then boiled with phosphorus oxychloride and the resulting 2 - methoxy - 6 : 9 - dichloroacridine is condensed with 5-diethylamino-2-aminopentane, preferably in solution in phenol, to yield the corresponding 9 - (d - diethylamino - a  - methylbutyl)-amino derivative; (2) the 6-bromo-3-methoxybenzoic acid in (1) is replaced by the 6-chloro compound; (3) 5-chloro-41-methoxy-diphenylamine-21-carboxylic acid is prepared as in (1) or (2) and warmed with phosphorus pentachloride in ligroin or with thionyl chloride, preferably in carbon tetrachloride, to form the acid chloride, which is heated with 5-diethyl-amino-2-aminopentane and the resulting substituted amide is boiled with phosphorus oxychloride to give the product of (1); (4) the methyl ester of 5-chloro-41-methoxydiphenylamine-21-carboxylic acid is prepared by esterifying the acid, e.g. with methyl alcoholic sulphuric acid, or by heating methyl 6-chloro-3-methoxy-benzoate with 3-chloroaniline in isoamyl alcohol in the presence of potassium carbonate, anhydrous potassium acetate and copper powder, and is heated with 5-diethylamine-2-aminopentane to form the substituted amide, which is treated as in (3); 6-bromo-3-methoxy-benzoic acid and 5-fluoroaniline are heated as in (1), and the resulting 5-fluoro-41-methoxydiphenylamine-21-carboxylic acid is further treated in the same way as the 5-chloro compound in (3) (using phosphorus pentachloride in ligroin for the conversion to the acid chloride).  3-Fluoroaniline is obtainable by catalytic reduction of 3-nitrofluorobenzene in methyl alcohol in the presence of Raney nickel. p   The Specification as open to inspection under Sect. 91 comprises also an example in which the chloride of 5-chloro-41-methoxydiphenylamine-21-carboxylic acid is stirred with aluminium chloride at 10 DEG  C. to form 2-methoxy-6-chloroacridone, which is then converted into 2-methoxy-6 : 9-dichloroacridine by the action of phosphorus pentachloride.  This subject-matter does not appear in the Specification as accepted.
Patent GB-794907-A (GB)
Title: Methods and apparatus for forming composite hollow articles
IPC: B29C53/60
Filed: 1954-07-21
Abstract: 794,907. Composite pipes. LORRAINEESCAUT. July 21, 1954 [Nov. 25, 1953], No. 21287/54. Class 99(2). In a method of lining a hollow body a liner of thermoplastic material is formed into substantially the final shape thereof and subsequently deformed mechanically in the cold state, in such a way that at least one of the dimensions of the transverse cross-section of the liner is reduced, and then inserted within the body, the assembly being then heated to cause the liner to recover the original dimensions thereof and to be urged into engagement with the interior of the body. As shown, thermoplastic liner tubes 2 are fed one by one to a channel 3 and then to a roll-type mill 4 in which the tubes are reduced in diameter. Each tube is introduced into a steel tube 5 fed into a channel 6, and each assembly of tube and liner is then passed to a heating chamber 8. In modifications (a) the deformed liners are fed to a machine and have helically wound thereon a steel strip, and (b) concrete pipes are moulded around the deformed liners ; in both cases a final heating expands the liners into engagement with the wound strips or concrete pipes.
Patent GB-787845-A (GB)
Title: Improvements in and relating to belt conveyors
IPC: B65G21/14
Filed: 1954-07-21
Abstract: 787,845. Endless conveyers. STUBBE, F. July 21, 1954 [July 24, 1953], No. 21304/54. Class 78 (1). In an endless belt conveyer wherein the belt is adapted to move along a curved path which may include curves in the plane of the belt as well as curves at right angles to the belt, the latter is supported on carriages which are connected to an endless traction member, such as a wire rope or chain, and are provided with a pair of guiding rollers and either one running roller or two running rollers mounted in tandem, these rollers engaging a runway consisting wholly or partly of rail sections of resilient material such as rubber. In Fig. 1, the belt is secured to carriages 2 each of which is provided with a running roller 3 and two guiding rollers 4 engaging a sectional rubber rail 5 formed with a wire core 7 to which are attached members 6 by which the rail is secured to its supporting framework. In a modification, Fig. 2, the members 6 are screwed into nuts 11 embedded in the rail. Each rail section may comprise three rubber rods 12, Fig. 3, vulcanized to each other with the wire core in the space 13. In Fig. 4, the rail is formed with lugs 10 which are pivotally attached to members 6 secured to supporting framework bars 8 this construction being particularly suited for supporting the conveyer on undulating ground. The conveyer may be supported inside a flexible tube (Fig. 5, not shown). Fig. 7 shows the application to a portable conveyer wherein the runway consists of rigid sections 16, 19, 22 interconnected by flexible sections 20, 23, 24. The section 16 is mounted by member 6 on a bar 8 supported on a carriage 15 which is provided with a platform 17 carrying a short arcuate transverse runway for a carriage 18. This latter carriage supports the section 19 through members 6a, 8a and is provided with a boom 21 on which is mounted the section 22. The boom may be raised about its pivot 21a on the member 8a by the cable 29 of a winch 32 mounted on a tower 31 on the carriage 18. The section 24 normally sags but becomes taut in the highest position of the boom. Specification 698,839 is referred to.
Patent GB-441497-A (GB)
Title: Improvements in or relating to mechanical power transmitting devices for use with pumps
IPC: F04B1/06
Filed: 1934-07-20
Abstract: 441,497. Converting rotary into reciprocating motion. GROFF, J. C., 111, North 4th Street, Allentown, and JOHNSON, O. W., 62, East Market Street, Bethlehem, both in Pennsylvania, U.S.A. July 20, 1934, No. 21343. Convention date, Aug. 15, 1933. [Class 80 (iii)] [See also Group XXVIII] The reciprocating pump piston 8 is driven by the crank 14 through the hinged connecting rods 11, 13. The joint pin of these carries a roller 12 engaging a tiltable guide member 16, the surface of which is a circular arc, increasing tilt of this member increasing the stroke of the pump. The slope of the guide member may be varied by hand or automatically.
Patent GB-840636-A (GB)
Title: Rotary shaft seals
IPC: F04D29/12
Filed: 1957-07-05
Abstract: 840,636. Shaft seals. BORG-WARNER CORPORATION. July 5, 1957 [July 30, 1956], No. 21414/57. Class 122 (5). In a rotary shaft seal in which a flexible diaphragm 17 is clamped at its inner peripheral portion between a sealing-ring 25 and a sleeve 27 telescoped into the ring, in order to prevent damage to the diaphragm during assembly of the three parts, the sleeve and sealing-ring are positively located with respect to each other by a shoulder 40 on the sleeve that contacts a face 32 of a radial flange 31 on the ring. The diaphragm, which may be of natural or synthetic rubber, has an enlarged end portion 35 which engages a groove 34 in the ring and the sleeve is formed with three portions 36, 37 and 38. During assembly the relatively thin portion 38 is spun over at its end to engage the face 33 of the radial flange 31 and permanently hold the parts in position. The outer peripheral portion of the diaphragm is secured to the shaft housing and the shaft 20 has a flange 21 urged into facial sealing engagement with a face 24 of the sealing- ring by a spring 28 opposed by a lighter spring 29.