baber/WOPTO huggingface dataset:
Patent GB-461808-A (GB)
Title: Improvements in the production of acetic anhydride
Filed: 1935-05-18
Abstract: In the production of anhydrides such as acetic anhydride by the oxidation of acetaldehyde with air or oxygen in the presence of an oxidation catalyst, the reaction being stopped at the desired point and the anhydride being separated from the acid, as described in Specification 446,259, the reaction is effected with the addition of esters such as ethyl, methyl or ethylidine acetate or butyl phthalate to reduce the concentration of the acid, preferably to below 60 per cent; the oxidation may then be carried more nearly to completion without reducing the yield of anhydride. In examples the proportions of diluent vary between 20 and 70 per cent of the reaction mixture. In one example, using 60 per cent of ethyl acetate as diluent, when 80 per cent of the aldehyde was oxidized, 64 per cent of the oxidation product is anhydride.  The catalysts mentioned are mixtures of manganese and copper acetates and of copper and cobalt acetates respectively.  The process may be applied to the production of the anhydrides of monobasic or saturated or unsaturated polybasic aliphatic or aromatic acids, which may be substituted.
Patent GB-1137389-A (GB)
Title: Multi cypher digital printer
IPC: G06K15/06
Filed: 1966-04-01
Abstract: 1,137,389. Zero suppression and decimal point printing. ELMEG ELEKTRO MECHANIK G.m.b.H, and BLAUPUNKT G.m.b.H. 1 April, 1966 [1 April, 1965; 26 March, 1966], No. 14688/66. Heading G4A. A zero suppression and decimal point inserting printing mechanism is described such that when no decimal point is to be inserted all zeros above the most significant non-zero digit are suppressed, and when a decimal point is to be inserted-which can be done selectively between any two denominations-all zeros above the most significant non-zero digit are suppressed if that digit is to the left of the decimal point (i.e. in the integral part of the number) otherwise only those zeros above the first denomination above the decimal point are suppressed. This results in a decimal number less than unity being printed as 0À0025 for example. As described control wheels 2, Fig. 9, one for each denomination, are differentially arrested in accordance with signals from an electric or electronic computer to position type wheels 1 in corresponding positions. The main cam-shaft 44 then causes a lever 7 carrying the type wheels to be rocked, via latching members 11, 12, so that the type wheels are brought into contact with the paper. If any control wheel 2, and hence also the associated type wheel 1, is arrested in its zero position, a recess 26 in the control wheel 2 is so positioned that during the printing cycle a spring urged sensing member 19 rises into the recess 26 thereby rocking the lever 11 and preventing it latching with the lever 12, thus suppressing the printing of a zero. When, in any denomination, a non-zero digit is set-up, the sensing member 19 cannot rise and a projection on it then prevents the zero suppression mechanism becoming effective in any lower denomination. Decimal points are selected by levers 29, there being one for each denomination. Movement of the lever 29 to the forward printing position (as shown in Fig. 9) both positions a decimal point adjacent to the printing wheel and a projection 30 on its lower end prevents the associated sensing member 29 rising and then inhibits the suppression of zeros in the first denomination above the decimal point.
Patent GB-1307576-A (GB)
Title: Alarm systems
IPC: G08B29/14
Filed: 1970-03-26
Abstract: 1307576 Electro-physical measurement SIEMENS AG 26 March 1970 [28 March 1969] 14709/70 Heading G1N [Also in Divisions G4 H3] An alarm system comprises a plurality of detectors connected to a central station via a common line connecting terminals a, b of each detector, connected via a pair of diodes Gr3, Gr4 to a sensor K2 and an indicator Lp in such a manner that when the sensor K2 is in its normal state, a symetrical finite impedance is presented across terminals a, b but when the sensor K2 is in its abnormal state, the indicator Lp becomes operative and a different impedance is exhibited by terminals a, b to positive and negative input voltages. As described, a sensor K2 may be an ionization chamber used in a smoke detector, the resistance of which is compared with a reference chamber K1. The A. C. input to terminals a, b is rectified by Gr3 to provide a negative voltage across capacitor C1 and by Gr4 to provide a positive voltage across C2. Under normal conditions, the current through FET T1 is drawn equally from positive and negative half cycles so as to give a symmetrical impedance. In the presence of smoke, the current in T1 becomes reduced, turning on T2 and lighting local indicator lamp Lp. T2 draws current only from positive half cycles at terminal a, A feedback path is provided via R2 so that the circuit remains in the state until reset by an increase in input voltage. Testing. All detectors connected in parallel across a line may be tested by reducing the negative excursions of the supply waveform from the central station and noting that the current during the negative excursion then becomes negligible. A four-layer diode or thyristor and zener diode may be connected at the end of the line so as to provide a test for line continuity.
Patent GB-297856-A (GB)
Title: Improvements in or relating to glass furnaces
IPC: C03B5/187
Filed: 1927-06-01
Abstract: 297,856. United Glass Bottle Manufacturers, Ltd., and Moorshead, T. C. June 1, 1927. Charges, agitating, -In a glass melting furnace A having a channelled forehearth B through which the glass is circulated by a paddle D and from which the molten metal is withdrawn by a bottleforming machine of the suction type, the paddle D is arranged between two dams P, P<1>, the former being disposed at or near the gathering point and the latter in the return arm of the forebearth channel b<1> adjacent the furnace A. The inlet arm of channel b<1> is fitted with a refractory plug C which is adjustable vertically to control the temperature of the metal entering the forehearth. The driving gear for the paddle D is arranged so that the toe of the latter travels in an elliptical path and comprises a shaft E which is driven by a chain-wheel e either by an independent motor or from the bottle-forming machine and which carries a crank e<1> having a pin e<2> engaging one end of a connecting-rod G, the other end of which has a cross-pin; g attached to blocks H slidably mounted in guides J. Mounted to swivel on the rod G is an eye-bracket K supporting a rod L to which is adjustably secured the paddle holder M. A second connecting-rod N is pivoted on the rod L and to a crank O on the pin g, this arrangement ensuring that the rod L and paddle Dare always maintained in a vertical position. The forehearth is, except at the gathering point, provided with a cover formed with an opening to allow movement of the agitator D, this opening being covered by refractory tiles Q, Q<1> which are fitted with wheels q, q<1> running on rails R and are attached to the holder M by slotted brackets S, S<1>, and pins s, s'.
Patent GB-397983-A (GB)
Title: Improvements in extenders or fitments for casement windows and such like
IPC: E05C17/22
Filed: 1932-05-25
Abstract: 397,983. Stays. SALT HOUSE, E., 24, Railway Road, Urmston, near Manchester. May 25, 1932, No. 14789. [Class 65 (i).] A casement stay has two or more narrow parts and one or more stops, and co-operates with a bracket, one setting of the stay permitting limited opening of the window, while another setting, in which the stay can only be placed from inside the room, allows full opening. In the form shown, the stay-bar b is curved and engages with a fixed bracket a, the bracket having a clamping screw and ribs which engage grooves b<3> in the stay-bar. The stay-bar has two narrow parts b<1>, b<2> at which it can be disengaged from, or engaged with, the bracket a. When engaged by the neck b<1>, the opening is limited by stops b<6> in the grooves b<3> ; this opening is insufficient to allow access to the stay from outside the window, and before the window can be opened further it must be completely closed and the stay disengaged from the bracket at the neck bl. When the stay is then engaged with the bracket at the neck b<2>, its opening is limited by a stop pin b<5>. The stay is attached to the window by a T-end fitting in a slotted plate c ; the slot is'T-shaped to allow complete detachment of the stay when lifted, but the T-head of the slot is inclined to reduce the liability to accidental detachment. Alternatively, the end of the stay-bar may be bored to slide on a vertical pin in a bracket on the window. In a modification, a straight stay-bar may be used, the bracket a being pivotally mounted.
Patent GB-629365-A (GB)
Title: Fire extingishing nozzle and distributor head
IPC: B05B1/14
Filed: 1947-06-04
Abstract: 629,365. Spray-producers &c. BURNAM, T. W., and RAMSAY, G. D. June 4, 1947, No. 14816. Convention date, May 24, 1946. [Class.69 (iii)] A fog nozzle has a number of sets of orifices, each set containing three or more orifices emitting intersecting spray jets, the orifices being correlated as to crosssectional area, the angular relationship, and spacing, so that the energy-vector diagram of each set of spray jets is within limits defined in the Specification. In one embodiment a nozzle has a number of circumferentially spaced sets of orifices 3 in a tapered section 1, and further sets 4 similarly spaced in a tapered section 6.
Patent GB-1220533-A (GB)
Title: Improvements in and relating to armoured vehicles
IPC: F41A23/24
Filed: 1969-03-21
Abstract: 1,220,533. Armoured vehicles. CONTRAVES A.G. 21 March, 1969 [3 April, 1968], No. 14927/69. Heading F3C. An armoured vehicle is provided with an unlimitedly rotatable turret 2 on which are mounted a pair of anti-aircraft guns, a scanning radar appliance and a target-tracking radar appliance 5, at least one optical periscope 6 passing through the roof of the turret 2. Within the turret 2 are provided seats 8 for the crew, desks 7 with radar screens positioned beneath the or each periscope 6, a ballistic computer 90 for automatic computation of the ballistic elements for each gun in dependence on the target locating data continuously ascertained by the target-tracking radar appliance, manually operable periscope control means, and an ammunition store 42 for the or each gun. In the construction shown the guns are journalled one on each side of the turret 2, the guns being belt fed with ammunition from the stores 42 through supply ducts part of each of which is rigid with the gun and the other part of each of which is rigid with the ammunition store (Fig. 5, not shown). The guns are rigid with the turret for training but are elevatable independently thereof. The field of view of the periscopes 6 is also adjustable in elevation (Fig. 4, not shown) and azimuth independently of the turret. Readings of target position may be derived from the periscopes, the readings to be used in case of failure of the radar appliancies. The scanning radar appliance is mounted in a bulge 23 at the rear of the turret, the aerial 3 thereof being movable between erected and protected positions by an hydraulic device 31. The target-tracking radar appliance is provided with an armoured casing, the aerial dish 50 of the appliance being rotatable between an operative position, as shown, to a protected position between the armoured casing and the wall of the turret.
Patent GB-426451-A (GB)
Title: Servicing automotive vehicles
IPC: E04H6/40
Filed: 1934-05-17
Abstract: 426,451. Turntables for servicing motor-cars. STANDARD OIL DEVELOPMENT CO., Linden, New Jersey, U.S.A. May 17, 1934, No. 14937. Convention date, Dec. 28, 1933. [Class 104 (ii)] A station for servicing motor - cars is a narrow space comprises an annular turntable 2, rotatable round a stationary service platform 4 supporting pumps &c. 5. The turntable may be driven by an electric motor 11, through gearing, anc the motor controls may be in series with switches in the service equipment so that wher the latter is in use, the turntable is stopped. Lubricating pits 7 may be arranged at the rear. In another form, two or more concentric, independently rotatable annular turntables move relatively to one or more stationary intermediate annular platforms on which the service equipment is mounted.
Patent GB-731488-A (GB)
Title: Improvements relating to the straining of viscous substances
IPC: A23G1/04
Filed: 1953-05-29
Abstract: 731,488. Filters; straining - machines. BAKER PERKINS, Ltd. May 29, 1953 [May 29, 1952], No. 14975/53. Class 46. A process for filtering a viscous substance such as molten chocolate comprises forcing the substance in a single stream through a filter member which is caused to vibrate bodily in the general direction of flow of the material thereto or in a direction perpendicular to its filtering surface. Molten chocolate passes under pressure along a pipe 1 to a filtering chamber 2 at the outer end of which a reinforced wire mesh filter element 7 is held against a conical seating 13 by a ring 11 and clips 12. The whole chamber is vibrated at a frequency preferably of 3000 to 6000 oscillations per minute by a stationary vibrator magnet 3. The chamber is mounted on the pipe 1 by resilient buffers 4 and flange 5. The amplitude of the oscillations is preferably of the order of 0.2 to 2 mms. The filtered chocolate flows into a hopper 19 from which it may be removed by a crank-driven piston 20, while the residue falls into a trough 8 defined by a removable insert 9 and may be removed therefrom by a worm conveyer 10. The conveyer may drive a toothed ring 18, Fig. 2, having a diametrically-extending scraper bar 16 in contact with the element 7, Fig. 1. Around the pipe 1 and chamber 2 heating jackets 21, 22 through which water flows, and connected by flexible pipes 14, may be provided. To prevent adhesion of molten chocolate to the wall of the pipe 1 the pipe itself may be vibrated. A seal between the pipe 1 and chamber 2 is provided by a membrane 6 the edge portions of which are held by retaining rings fitted on the pipe 1 and chamber 2 respectively.
Patent GB-1437061-A (GB)
Title: Valve
IPC: F16K35/16
Filed: 1974-04-05
Abstract: 1437061 Valves WALTHER & CIE AG 5 April 1974 [5 April 1973] 15192/74 Heading F2V A quick opening valve for high pressure gas containers comprises a closure member 3, Fig. 1, which is urged against its seat by engagement of its stem 4 via set screw 8 with a lever 9 pivoted at 10 but normally locked at its free end by engagement within recess 11 of shaft 12. The latter extends into a closed housing 14, Fig. 2, and carries a lever 15 having a stop surface 16 engaging a recess in the base of a U-shaped lever 18 pivoted at 19 and loaded by spring 20. Lever 18 is supported at its opposite end in a slot 25 of a lever 23 pivoted at 24 and loaded by spring 27. The opposite end 28 of lever 23 is forked and is locked by transverse toggle 31 to the shaft 29 of a rotary electromagnet 30. To open the valve the coils of magnet 30 are energized causing shaft 29 to rotate so that toggle 31 moves into alignment with the recess of fork 28. All the levers can thus rotate under the gas pressure acting on closure 3 and move into a position (Figs. 4, 5, not shown) in which shaft recess 11 disengages lever 9 to permit rapid opening of the valve. In the valve open position seal 2 engages guide 34 to prevent gas leakage along stem 4. To reclose the valve after complete release of the gas pressure, setscrew 8 is loosened and lever 9 pivoted into the locking position. The exposed end of shaft 12 is then turned under finger pressure towards the locking position causing the levers 15, 18, 23 and locking toggle 31 to reset. Setscrew 8 is then retightened.
Patent GB-238994-A (GB)
Title: Improvements in detachable book covers or binders
IPC: B42F11/02
Filed: 1924-06-24
Abstract: 238,994. Brisley, J. W., and Gauntlett, F. S. June 24, 1924. Fold-engaging files.- A detachable cover G for telephone directories or other books is provided with one or more fold-engaging wires A which are pivoted at one end to a plate B and are detachably retained at the other end by a slotted plate C or the like adapted to permit of the wires moving with the binding of the book when the book is opened or closed. Enlargements E prevent the wires from being pulled through the slots F. The plate C supports the book when the cover is hung up, and the wires may be fitted with a plate, shown detached, for protecting the top of the book.
Patent GB-352166-A (GB)
Title: Improvements relating to screw caps for polish tins and similar containers
IPC: B65D41/04
Filed: 1930-05-17
Abstract: 352,166. Screw-cap closures. GOODWIN, A. H., 34, Joicey Road, Low Fell, Gateshead, Co. Durham, and CO-OPERATIVE WHOLESALE SOCIETY, Ltd., 1, Balloon Street, Manchester. May 17, 1930, No. 15246. [Class 125 (iii).] Relates to screw-caps for polish tins &c., of the type provided with a groove to facilitate opening with a coin. According to the invention the cap a has a slot or slots b from which the metal is removed, a metal disc d and a cork disc e. Two slots b may be formed at right-angles across the top of the cap. An upright plate may be arranged to project through the slot and may be integral with or attached to the disc d. Specifications 239,814 and 320,510, [both in Class 125 (iii), Stoppers &c.], are referred to.
Patent GB-738618-A (GB)
Title: Light-sensitive photographic elements and emulsions suitable for x-ray exposure
IPC: G03C5/16
Filed: 1953-06-03
Abstract: 738,618. Photographic films. KODAK, Ltd. June 3, 1953 [June 4, 1952], No. 15280/53. Class 98 (2): The amount of desensitization on kinking of a photographic film comprising a support having a gelatino-silver halide emulsion layer of thickness greater than 0.4 mils. on each side, is reduced by incorporating in each emulsion an alkylbenzthiazolium salt having an alkyl group of at least 9 carbon atoms. The alkyl group may be n-nonyl, n-decyl, n-dodecyl or n-hexadecyl and the benzene ring may be substituted as in 3-n-lauryl-5-phenylbenzthiazolium iodide. The invention is particularly applicable to X- ray films, each emulsion generally being more than 0.6 mils. thick. There may be a gelatine layer (which may also contain other colloids) containing a non-diffusing, light-absorbing material coated over each emulsion layer, for example as described in Specification 583,508. Subbing layers such as antihalation layers may be provided between the support and the emulsion layers. A triangle test and a sensitometric bend test by means of which the amount of desensitization on kinking may be estimated, are described. Specification 522,997 also is referred to.
Patent GB-423645-A (GB)
Title: Improvements in and relating to ball valves for cisterns
IPC: F16K31/26
Filed: 1934-05-22
Abstract: 423,645. Valve accessories. COOK, A. B., 27, Kingston Road, Leatherhead, Surrey. May 22, 1934, No. 15310. [Class 135] A ball-cock is secured to the wall of a cistern by means which permit its ready removal from inside the cistern. A bush h<1> secured to the valve casing has a spigot adapted to pass into a socket in a ferrule b clamped to the wall of the cistern and has a flange h adapted to be pressed against a packing h<2> by a cap-nut f screwed onto the ferrule. The inner surface of the bush is screwed to receive a throttling disc l with a central perforation and a throttling disc k with a series of perforations next the periphery. By varying the distance between the discs the effective throttling may be adjusted.
Patent GB-438147-A (GB)
Title: Improvements in and relating to high voltage electrical discharge tubes
IPC: H01J35/16
Filed: 1934-05-22
Abstract: 438,147. Rontgen - ray apparatus. ALLIBONE, T. E., Senlac, Norman Road, Sale, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. May 22, 1934, No. 15338. [Class 98 (i)] [See also Group XL] In high-voltage, high-vacuum, discharge apparatus for the production of X-rays a shield is formed to intercept undesired rays by using a shell surrounding the tube and containing metal in fluid or effectively fluid form ; lead shot, mercury, or lead, tungsten or other heavy metal in powdered form, or an oxide or other compound of the heavier elements may be used. The shutter of the X-ray tube may be formed of such material. The lead shot may be of several diameters the smaller being run into the shell after the larger shot is in place. Mechanical hoists may be used for the lead shot, and valves may be provided on the shell to run out the shot and to allow its entry as required. In a horizontal tube the shell is formed by two walls, 9, 10 separate from the X-ray tube 1, and divided into sections by septums 15; inlets 14 allow for entry of the shot. The shutter is formed by mercury delivered to the window 12 from an upper reservoir, into which it may be forced from a lower reservoir 19 by compressed air, pump or vacuum means ; interconnected valves 21, 22, 24 control the flow of fluid and compressed air in the construction shown. The tube and shield may be rotated on rollers 13. The thickness of the shield is graded to give an equal shielding for the rays. Specification 415,710 is referred to.
Patent GB-1431334-A (GB)
Title: Aerosol dispenser having a compressed air-generating piston pump as aspirating air source
IPC: B05B11/06
Filed: 1973-03-30
Abstract: 1431334 Spray dispensers CIBA-GEIGY AG 30 March 1973 [31 March 1972 3 April 1972 12 Feb 1973 (2)] 15447/73 Heading B2F In a hand actuated spray dispenser of the type in which material to be dispensed is aspirated by compressed air generated by an internal piston pump, the piston is actuated by a push bar member in the side wall of the dispenser. As shown the piston comprises a flexible member 26 slidable in a U shaped chamber 30 and mounted between a piston body 23 and an actuating push bar member 4 protruding through the side wall of the dispenser. Compressed air is discharged to the aspirator when an actuator 31 on the piston body engages and opens a valve 12, material to be dispensed is contained in a chamber 18 which may include air inlet valve means 13, 17. An extension 20 forms a mouth piece. In a second embodiment the piston is axially slidable and includes a bucket type inlet valve. The piston is actuated by a lever mechanism from the push bar member. The piston includes a valve opening pin.
Patent GB-256009-A (GB)
Title: Improvements in or connected with apparatus for intermittently interrupting electriccircuits
IPC: H01H29/22
Filed: 1925-06-15
Abstract: 256,009. Bell & Croyden, Ltd., J., and Gray, W. R. June 15, 1925. Mercury switches, with clockwork or electric motor actuation, comprise a duplicate pendulum A, E connected by insulation F, the main arm A being rockable on a shaft C by means of a clockwork- or electricallyactuated pendulum D. The double mercury switch H, J comprises a central insulating part G of cylindrical form with a recess at each end closed by the insulating plugs H<1>, J<1>, the recesses containing mercury and contact points H<2>, J<2> connected by a bow K and contact points H<3>, J<3> which attach the sliding frame L to the part G. The frame L embraces the arm A and is fixed by a spring L<1> engaging any one of a number of closely arranged notches (not shown) on the arm A. When the pendulum rocks to either side the contacts in the recess on that side are electrically -connected, whereas for a short space of time in the middle position no contact is made. The circuit is by way of the connection M, arm E, bow K, either pair of contacts, frame L, and arm A. The period between the interrupting of the circuit can be varied by sliding the frame L up and down the arms, and the arm A may be graduated for this purpose.