baber/WOPTO huggingface dataset:
Patent GB-897316-A (GB)
Title: Sensing transducer
IPC: G06V10/88
Filed: 1959-11-25
Abstract: 897,316. Recognizing characters. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 25, 1959 [Nov. 26, 1958], No. 40113/59. Class 106 (1). In a character-reading apparatus a sensing device is used which provides two different signals from a single scan over the character. In the form of Fig. 1, a magnetic sensing head consists of a series of pairs of magnetic core elements 11, 12, separated at the bottom by a gap 13 for co-operation with the character and at the top by a gap 25 which controls the flux induced. Alternate pairs are oppositely disposed for convenience and form two groups. In one group the control gaps 25 vary from small to large from one side to the other of the head and the gaps of the other group vary from large to small. The groups are each linked by a winding 20 which develop at terminals 23, 24 a signal proportional to the sum of the magnetic flux changes in all the cores of the associated group. The group of which the cores have the smaller control gaps on the left is most sensitive on that side whereas the other group is most sensitive on the right. As the head passes over a character therefore the terminals 23 give a greater signal than terminals 24 in response to character areas on the left-hand side and vice versa. The core elements are bonded together in a block 19. Another way of obtaining the graded sensitivity is to space the reading gaps away from the character by different amounts as shown in Fig. 3. In another modification, all the core elements are similar and there are no control gaps. Individual windings, one for each core, are given weighted numbers of turns and the windings associated with each group are connected in series. In Fig. 5 the same result is achieved in an optical system, the character being projected by lens 57 and prism 56 on to slotted mask plates 50. Graded filters 49 placed in front of the plates 50 render photo-cell 40a more sensitive to character parts at the upper end of the slot and photocell 40b more sensitive to parts at the lower end.
Patent GB-934856-A (GB)
Title: Control mechanism for axle catches for rail-guided mine gars and the like
Inventor: BOWLER JOHN JOSEPH
IPC: B61K7/22
Filed: 1960-11-22
Abstract: 934,856. Control mechanism for axle catches. WESTINGHOUSE BRAKE & SIGNAL CO Ltd. Sept. 28, 1961 [Nov. 22, 1960], No. 40140/60. Class 104 (2). A control mechanism comprises a plurality of subordinate mechanisms adapted for raising and lowering a plurality of axle catches 16, 17 mounted in tandem for engaging dummy or main axles 34, 35 on rail guided vehicles, a movable member e.g. a slide bar 13 for rendering only a first subordinate mechanism inoperative at any one time, and a lost motion device for retaining a second subordinate mechanism in an operative condition until the first subordinate mechanism returns to its operative condition, the subordinate mechanisms being adapted to maintain the axle catches in their raised position when in operative condition and in their lowered position when in inoperative condition. Mine cars 32, 33 with dummy axles run on rails at the level R-R in Fig. 1. The axle catches 16, 17, which are mounted in pairs pivoted at 18, 19 respectively are raised and lowered into and out of operative position by parallel link devices 26, 27 acting on sliders 28, 29 carried by the pairs of axle catches. The parallel links 24, 25 are actuated by connecting rods 20, 21 acting on arms 22, 23, which connecting rods are pivotally connected to levers (not shown) keyed to pivots 3, 4 respectively. The pivots 3, 4 also carry pairs of links 12, the upper ends of which carry sliders 9, 10, which engage in slots in a slide bar 13 reciprocable by actuation of a pressure cylinder 14. The lower ends 7, 8 of the pairs of links 1, 2 are connected by a compression spring 6. Stops (not shown) are provided to prevent the axle catches from being raised above their normal operative positions. In Fig. 1 if the slide bar 13 is moved to the right, the spring 6, in association with the stop on the pair of axle catches 17 will hold the slider 9 in contact with the right hand end of its slot and this will raise the pair of axle catches 16. With the slide bar in its mid-stroke position both pairs of axle catches are in their operative positions. Further movement of the slide bar 13 causes the slider 10 to be contacted by the left-hand end of its slot and it is forced to move with the slide bar 13, causing the catches 17 to be lowered and the spring 6 to be compressed. The mine car 33 is then released and the mine car 32 is held by the catches 16. When the slide bar 13 is moved from left to right a similar sequence of operations occurs, and the catches 16 are lowered subsequent to the raising of the catches 17. As an alternative to the slide bar 13, the movable member may be mounted on a pivot in which case the slots are arcuately shaped with their centres at the pivot.
Patent GB-873764-A (GB)
Title: Improvements relating to tube closure devices
IPC: A47B91/04
Filed: 1958-12-12
Abstract: 873,764. Furniture tips. DANIELS, R. R. J., and HUSGEN, H. E. Nov. 16, 1959 [Dec. 12, 1958], No. 40225/58. Class 134 A tube closure device comprises an elongated stem 14 rigidly connected at one end to a head 13 formed with an annular seating surface surrounding the stem, and a plurality of resilient fastening members 18 mounted on the stem at fixedly spaced positions along the length thereof, e.g. spaced by sleeves 17. Each fastening member comprises a central annular portion embracing the stem and disposed transversely thereto, and a plurality of circumferentially spaced limbs 20 integral with the annular portion and projecting therefrom radially outwards and towards the head of the device. As shown, the device is adapted for use with tubular furniture, the head 13 being formed with a spherical portion 11 which is snapped into a part-spherical recess in a plastic furniture glide 10. A washer 15A surrounding an enlarged portion 15 of the stem is interposed between the head 13 and the end of the furniture leg 16. The uppermost fastener 18 is held in place by a swaged end 22 of the stem 14 or a nut threaded on to the stem. The tube 16 may be cylindrical or circular, square or oval crosssection, or tapered, as shown.
Patent GB-1429972-A (GB)
Title: Process of and apparatus for heating circulating air in drying quipment
IPC: B41F23/04
Filed: 1973-08-24
Abstract: 1429972 Heating air in drying equipment OTTO DURR KG 24 Aug 1973 40255/73  Heading F4G An apparatus for heating circulating air in drying equipment comprises means, e.g. a fan 17, for exhausting a portion of the circulating air from the drying chamber T of the drying equipment, a preheater 18 through a first part 18a of which the exhausted air passes to be preheated, a combustion chamber 11 for receiving the preheated exhausted air, means for supplying exhaust gases from the combustion chamber 11 to a second part 18b of the preheater, the second part 18b being in heat exchange relationship with the first part 18a, and means, e.g. a heat exchanger 13, by which the exhaust gases heat air circulating in the drying equipment, as in a chamber 12 of a circulation arrangement. The circulating arrangement comprises pipes 10 and 15, the latter having a fan 14 incorporated therein. The combustion chamber 11 is heated by a burner 20. Exhaust gases from the heat exchanger 13 may pass to atmosphere, through a by-pass to a fresh air pipe 25 back into the drying chamber T or to an air lock S of the drying equipment to directly or indirectly heat the same. By-passes may be provided for both parts of the preheater and the heat exchanger, valves 32, 33 in the circuits associated with the first part 18a of the preheater are controlled by a temperature sensor 34 and the supply of fuel to the burner 20 is controlled by a temperature sensor 35. A heat exchanger may be provided at the junction 25a of the piping.
Patent GB-885997-A (GB)
Title: Spraying apparatus
Inventor: PINKE AUGUST HERMAN
IPC: A01M7/00
Filed: 1958-12-15
Abstract: 885,997. Reciprocating pumps. HUDSON MANUFACTURING CO., H. D. Dec. 15, 1958, No. 40361/58. Class 102(1). [Also in Group XXIX] A wheeled tank 5 for spray liquid detachably receives therein a pump unit comprising a pump, a support column 42 and a pump operating mechanism, and the tank has upper and lower retaining means for engagement with means carried by the support column. The lower portion of the pump cylinder 19 is reciprocated in a cylinder 21 and forces liquid, with the aid of valves, into a chamber 18 which acts as a pressure storage chamber, and liquid is led therefrom to a spray nozzle 28 through a pipe 23, connection 25 and hose 27. The chamber 18 depends from a head 29 which is vertically reciprocated within guides 31, 32 of a member 33 by means of a rotary shaft 14 carried by the member 33, and having a crank pin carrying a slide 36 which reciprocates horizontally in the head. The support column is attached to the member 33 which has studs 45 for insertion into openings at the top of the tank, and the lower end of the column is received in a guide 46 apertured to receive a pin 48 on the column. The shaft 14 is driven via a belt 12 and pulley 13 from an I.C. engine carried on a platform 7. A paddle 38 is attached to the chamber 18.
Patent GB-1276616-A (GB)
Title: Improvements in guiding means for cutters for cutting cloth and like material
Inventor: EDWARDS ARTHUR
IPC: D06H7/02
Filed: 1970-04-14
Abstract: 1276616 Cutting PHILIPS & SONS (MANCHESTER) Ltd 19 April 1971 [14 April 1970 22 Aug 1970] 17612/70 and 40551/70 Heading B4B Means for guiding, e.g. a rotary traversible cutter (not shown) for cutting cloth &o. comprises an elongate guide member 2 for guiding the cutter for substantially horizontal traverse, support rollers 34, 36, and a flexible tensioned member 30, fixed between two stationary points 32, 38, and engaged by the rollers 34, 36 so that the guide member 2 can be vertically adjusted relative to the points 32, 38. A handle 40 allows manual adjustment of the guide member 2, a rod 10 attached to the member 2 running in a tube 12 fixed to a bracket 16 of a table, while a spring 42 partially counterbalances the weight of the member 2. In a modification, Fig. 2, the tube 12 is adjustably supported on bars 76 of a cloth laying carriage 60, cloth being supplied from a roll 68 under or between rollers 92, 94, adjustable, Fig. 3 (not shown), for one-way or two-way laying over the table 66.
Patent GB-1402293-A (GB)
Title: Apparatus for indicating exposure conditions of cameras equipped with electric shutter mechanisms
IPC: G03B7/083
Filed: 1972-09-01
Abstract: 1402293 Photographic exposure indicating apparatus OLYMPUS OPTICAL CO Ltd 1 Sept 1972 [3 Sept 1971 (2) 17 Nov 1971 4 April 1972] 40688/72 Heading G2A Exposure conditions of a photographic camera are indicated by apparatus comprising a first electric pulse generating circuit 18 which generates a first reference time pulse signal A o  having a pulse width, e.g. 30 ms, corresponding to a maximum shutter open time at which a hand trembling alarm is to be given, a second electric pulse generating circuit 32 driven by the first for generating a second reference time pulse signal B having a width, e.g. 1ms, corresponding to a limit of a shutter open time at which an alarm for an over exposure condition is to be given, an automatic exposure control circuit 36 which operates in synchronism with the output from the first electric pulse generating circuit to open the shutter of the camera for a time corresponding to the quantity of light received from an object, a comparator gate circuit 72 which compares the width of output pulses C, C o  from the exposure control circuit with A o , B, and means 118, 124 responsive to the output from the comparator gate circuit to indicate adequate and inadequate exposure conditions.
Patent GB-1474975-A (GB)
Title: Hose couplers
IPC: F16L37/00
Filed: 1974-09-19
Abstract: 1474975 Pipe couplings PARKER-HANNIFIN CORP 19 Sept 1974 [19 Nov 1973] 40912/74 Heading F2G A hose coupler 10 for coupling a hose and an adaptor 14 includes a tapered opening for reception of the adaptor 14 which has an external annular locking rib 19 to engage in internal grooves 22 of locking members 15 pivoted on a body 11 of the coupler 10, an axially movable sleeve 23 incorporating an internal cylindrical surface 25 retaining the locking members 15 in a latched position (Fig. 4), in engagement with the adaptor 14, when the sleeve is in a retracted position and also incorporating an undercut end wall 30 of an annular internal recess 28 engageable with a surface 31 of the head portion 26 each locking member 15 when the sleeve is in an extended position (Fig. 2), the locking members 15 being biased by an over centre spring unit 18 to an unlatched position. The three circumferentially spaced locks 15 each have an inwardly projecting finger 21 to engage an abutment face of the adaptor 14 actuating the locks 15, and are each pivoted on the body 11 to swing in a diametral plane. At one end of each lock 15 there is a projection engageable by the over centre spring unit 18 carried by a hinge pin 20 mounted in body 11 such that each lock 15 is biased in a clockwise direction when the adaptor 14 is engaged (Fig. 4) and in an anticlockwise direction when the adaptor 14 is not engaged (Fig. 2). A valve poppet 35 is connected to a stem 41 by a pin 42 having several circumferentially spaced guide ribs 59 slidable within a bore 60 of a seat ring 32, itself slidably mounted in a bore 56 of the body 11, the stem 41 being connected to the handle 43 through a shaft 37 and a crank arm 38, the handle 43 including an arcuate portion 46 having a straight side 47 co-operating with a lug 48 on the sleeve 23 such that the handle 43 can be turned to open the valve poppet 35 only when the sleeve 23 is in an extended position, a sufficient gap then existing between the straight side 47 and lug 48.
Patent GB-1310738-A (GB)
Title: Polybenzimidazoles
IPC: C08G73/18
Filed: 1970-08-26
Abstract: 1310738 Polybenzimidazoles BADISCHE ANILIN- & SODA-FABRIK AG 26 Aug 1970 [27 Aug 1969] 41003/70 Heading C3R A polybenzimidazole is obtained by condensing (A) a dialdehyde, bis-dihalomethyl compound or bis-trihalomethyl compound of formula where X is -CHO, -CH(Hal) 2  or -C(Hal) 3  and Ar is a divalent aromatic radical, with (B) a salt of an aromatic tetraamino compound in which two pairs of amino groups are attached to the aromatic nucleus, the members of each pair being in ortho-position to each other. The reactants are heated alone or in polyphosphoric acid which may be diluted with a polar solvent. Examples are given.
Patent GB-1219856-A (GB)
Title: Improved acoustic source for subsea exploration
IPC: G01V1/137
Filed: 1968-08-28
Abstract: 1,219,856. Combustion apparatus. MOBIL OIL CORP. Aug. 28, 1968 [Aug. 28, 1967 (3)], No.41042/68. Heading F1L. [Also in Divisions H3 and H4]. An acoustic source for subsea exploration (see Division H4) comprises a chamber 25 into which diesel fuel is injected from supply 145 for ignition by glow plug 141, thereby to augment the gas pressure initially established by compressed air from supply 45. The pressure is released suddenly after combustion, by de-energizing solenoid 36 to free valve closure member 27. The air and diesel fuel supplies to the chamber are via valves 47, 146 controlled by timer 54.
Patent GB-957464-A (GB)
Title: Process for the production of granular ferrous sulphate
IPC: C01G49/14
Filed: 1961-11-16
Abstract: Mechanically stable firm granules of ferrous sulphate are produced by granulating a mixture of partially dehydrated ferrous sulphate with one or more oxides of iron, sulphuric acid, e.g. not less than 6%, and optionally coal, coke and/or oil.  The granules may be heated to 80-200 DEG  C.  The sulphuric acid may be an acid tar containing about 70% acid.  A sulphate filter cake wet with sulphuric acid obtained by the concentration of pickling acids or of hydrolysis waste acids from the production of TiO2 may be used as starting material and the iron oxides may be roasting residues, e.g. from a preceding sulphate decomposition, and may be used in the heated state.  In an example a mixture of FeSO4.H2O, Fe O3 and coal is sprayed continuously in a granulating drum with acid tar and subsequently water, the shaped products harden and can be decomposed in shaft or vortex kilns to give ferric oxide and/or ferroso-ferric oxide.
Patent GB-1069439-A (GB)
Title: Curable mixtures comprising cycloaliphatic polyepoxy compounds, curing agents, and metal accelerators
IPC: C08G59/40
Filed: 1964-10-08
Abstract: Curable mixtures suitable for the production of coatings, castings, mouldings and adhesives and for use as interlayer material for the manufacture of laminates, contain (a) a cycloaliphatic polyepoxide containing at least one 1,2-epoxide group in a five-membered ring, (b) a curing agent for epoxy resins and (c) as accelerator a titanic acid ester or polymeric titanic acid ester of the formula <FORM:1069439/C3/1> where R1 to R4 are identical or different and each is an organic radical, and m is an integer. The curing agents specified are polyamines, polyamides, alkanolamines, polyalcohols, polyphenols, polythiols, polyisocyanates, polyisothiocyanates, polycarboxylic acids and polycarboxylic acid anhydrides.  The compositions may also contain fibrous or non-fibrous fillers, plasticisers pigments, dyes, flame-inhibitors or mould lubricants. They may be used as coating compositions, casting resins, pore fillers, putties, adhesives, moulding compositions and as electrical insulating compositions.  Foamed products may be obtained from the compositions by using conventional propellants, e.g. trichlorofluoromethane.
Patent GB-1322236-A (GB)
Title: Gas silencers
IPC: B43K1/12
Filed: 1970-08-27
Abstract: 1322236 Silencers H ITO 27 Aug 1970 [1 Sept 1969] 41228/70 Heading F1B In a gas silencer for use with pneumatic apparatus or an internal combustion engine, a tubular member 1 has an opening connectible to said apparatus or engine and a bore 4 through which air or exhaust gas is supplied to a space enclosed by a helical spring 12, which normally has its adjacent turns in contact with each other, the spring 12 being fixed at one end to surround the tubular member 1 and having a biasing force exerted on its other end by a spring means 15, expansion of spring 12 being caused by the air or exhaust gas to form gaps between its adjacent turns to release the air or gas. A supporting rod 11 located in member 1 by a pin 10 allows a collar 13 to slide thereon when spring 12 is expanded. In another embodiment, Fig. 3 (not shown), the helical spring (20) surrounds for its whole length a tubular member (19) which has circumferentially arranged openings, and a silencer casing (18) is arranged surrounding the helical spring.
Patent GB-1067294-A (GB)
Title: Fluidised bed system
Inventor: WRIGHT JOHN CLIFFORD JAMES
IPC: B01J8/18
Filed: 1964-10-09
Abstract: 1,067,294. Electrically heated fluidized bed. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Oct. 6, 1965 [Oct. 9, 1964], No. 41278/64. Heading H5H. A fluidized bed in a container having a base (10) (drawing not shown) is heated by a silicon carbide resistance element (12) enclosed in a transparent fused silica cylindrical container (13) supported by a sealing plug (14) from a frame (11) above the container.
Patent GB-939142-A (GB)
Title: Weighing balances
IPC: G01G1/28
Filed: 1959-12-04
Abstract: 939,142. Balance weight placing mechanisms. T. CHYO. Dec., 4, 1959, No. 41352/59. Class 143. [Also in Group XXXVIII] Weights 15 to 22 are applied to the balance of Fig. 1 (or removed from a constant load balance) one by one in a predetermined sequence of reducing weight size by a corresponding set of solenoids C sequentially energized by a control system which ensures that, after each weight has been placed it remains if the beam is still underbalanced and removed if the beam is overbalanced, the next weight of the series then being placed. In the preferred system there are n weights whose relative magnitudes are 2<SP>n-1</SP>, 2<SP>n-2</SP> . . . 8, 4, 2, 1. When a load has been placed on scale pan 2, Fig. 1, the switch wipers 65 and 87, Fig. 2, are advanced in steps to energize successively the corresponding relays A and B and solenoids C. Each solenoid C controls the operation of one of the weightplacing levers 23 to 30, Fig. 1; each relay B provides a hold-in circuit for one of the solenoids to maintain it energized after the switch wipers have moved to the next step and each corresponding relay A may be operated to break this hold-in circuit. The switch wiper 67 is permanently energized so that a new solenoid C and associated relay B is brought into operation and a weight placed for each step of the switch. The switch wiper 87 is however normally unenergized so that the breaking of the hold-in circuit and consequent removal of a placed weight does not normally occur. If however the beam tilts, an aperture 82 in the beam allows a photocell 83 to be illuminated and the output from this cell is made to cause the switch wiper 87 to be energized and so effect operation of the appropriate relay A and thereby ensure removal of the last placed weight. The movements of the weight placing levers may be employed to operate an indicating system. These movements may be mechanically linked to a toothed-wheel operated counting mechanism, Fig. 4 (not shown), or may be sensed by switches which control an electric indicator, Figs. 5 and 6 (not shown).
Patent GB-1450164-A (GB)
Title: Separation of air and liquefaction of its components
IPC: F25J3/04
Filed: 1973-09-04
Abstract: 1450164 Air liquefaction CHEMIEANLAGENBAU ERFURT - RUDISLEBEN VEB 4 Sept 1973 [4 Sept 1972] 41545/73 Heading F4P A method for the fractionation of air and liquefaction of its components comprises the steps of compressing the feed air in a multistage compressor 1, the process gas being fed via line 3 to an adsorption device 4, 5 for drying and cleaning prior to being fed via line 6 back to the final stage of compressor 1, cooling the process gas after the final compression stage in heat exchangers 8, 11, 9, expanding one part of the cooled stream in a multi-stage expansion machine 10 and recombining it with the other part of the stream which is expanded in a throttle 14, passing the combined stream into rectification apparatus 15, 23, and then taking off liquid O 2  through line 24, liquid N 2  through line 17 and nitrogen-rich remainder gas through line 25, the remainder gas being compressed in a compressor 28 driven by the expansion machine 10 after being warmed in the cooler 2 of the compressor 1 before passing to the adsorption apparatus 4, 5 to regenerate the same. Heat exchanger 11 is cooled by coolant from a cooler 12, and the second part of the stream which has passed through exchangers 8, 11, 9 is cooled in exchanger 13 before passing to throttle 14. The combined stream passes into a first column 15 where liquid N 2  is drawn off through line 17 and the remainder through line 20, heat exchanger 22 and throttle 21 to a second column 23. A branch conduit 18 takes some of the liquid N 2  via exchanger 22 and throttle 19 into column 23, where O 2  liquid is drawn off as well as the remainder gas which passes via exchanger 22 to expansion turbine 26 before counterflow in exchangers 8, 9, 13 with the compressed feed air. Heaters 29 assist in ensuring that the remainder gas is at the temperature necessary for it to perform a regenerating function.