baber/WOPTO huggingface dataset:
Patent GB-674995-A (GB)
Title: Improvements in and relating to multiple sliding doors
Inventor: WINTERBURN GEORGE ARNOLD
IPC: E06B3/46
Filed: 1949-10-17
Abstract: 674,995. Switches held set and freed mechanically. T.M.M. (RESEARCH), Ltd. Oct. 28, 1950. [Oct. 17, 1949] No. 26562/49. Class 38 (v). [Also in Groups X and XXIV] Multiple sliding doors, particularly for covering an access opening to the working parts of a machine, are mounted to be movable both along their tracks and also backward and forward from one track to another in a direction at right angles to the plane of the door opening, the doors being aligned in one plane to close the opening and slid one behind the other to open it, the action of opening or closing the doors actuating a switch in the machinery control circuit so that when they are open the machinery motor cannot be started. Each door consists of a panel 14 provided at intervals along the top and bottom edges with ball runners 15 which engage in parallel grooves 19. The doors are all aligned on the front groove when closed and in this position depress a lever 33, Fig. 11, to hold a mercury switch 40 mounted on the other end 39 of the lever horizontal, thus completing the starting control circuit and allowing the machine to be started. If the doors are opened without first stopping the machine, the door 14 being pressed backwards to the rear groove, as shown dotted, the weight of the mercury switch causes the lever to tilt and the control circuit is interrupted, stopping the machine motor. The motor cannot be restarted until the switch 40 is reset by bringing the doors to the closed position.
Patent GB-896798-A (GB)
Title: Improvements in or relating to automatic gain control circuit arrangements
IPC: H03G3/22
Filed: 1958-08-19
Abstract: 896,798. Automatic gain control. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 19, 1958 [Aug. 22, 1957], No. 26637/58. Class 40(5).  In a radio receiver an A.G.C. voltage is applied from line 7 to the signal grid of a pentode I.F. amplifier 14 which is provided with an un-bypassed cathode resistor 8 to prevent detuning due to change of input  capacity as the grid bias is varied. The A.G.C. voltage for R.F. stages 2 is delayed, being applied from line 18 via resistor 11 to the suppressor grid of valve 14 which is connected to a fixed positive potential via a resistor 10 and acts as a delay diode. The delayed A.G.C. voltage is applied to R.F. stages 2 via line 4. To prevent the application of a positive grid bias to the R.F. stages 2 before the delayed A.G.C. comes into operation, the cathode of the valve 14 is earthed for D.C. by means of a choke 9 of low D.C. resistance and whose A.C. shunting effect on resistor 8 is negligible. The earlier I.F. stages may also be controlled by the delayed A.G.C. voltage. If the valve 14 has more than three grids, a grid other than the third may be used as a delay diode; alternatively a screen surrounding the electrode system of the valve may be used.
Patent GB-892915-A (GB)
Title: Improvements in or relating to a flow actuated signalling device for low and/or intermittent flow rates
IPC: H01H35/40
Filed: 1959-08-05
Abstract: 892,915. Magnetic switches. COULTHARD & CO. Ltd., WILLIAM (Houdaille Industries Inc.). Aug. 5, 1959, No. 26663/59. Class 38 (5). [Also in Group XXIX] A fluid-flow indicator comprises a body 12 having a passageway 14 through it adapted to be connected in a fluid-flow path, a plunger 48 working in the passageway or in a bushing 36 therein and biased by a spring 54 towards a position in which it closes the fluid inlet end of the passageway, and a magnet 56 movable by the plunger 48 under the action of fluid pressure acting thereon and adapted to actuate electric or electronic control means when moved a predetermined amount by fluid-flow. The bore of the passageway 14 is larger than the diameter of the magnet so that there is a space around the magnet for the flow of fluid. The bushing 36 has a port 44 positioned so as to be uncovered by the plunger 48 when it has moved a predetermined extent under the action of the fluid pressure to connect the inlet and outlet ends of the passageway 14. A magneticallyactuated switch 62 is housed in a cavity 20 in the body 12. Leads 66, 68 for the switch are connected with an electrical or electronic circuit for energizing a signal device 69 such as an indicating lamp, a horn, relays to ring phones, shut-off motors or the like.
Patent GB-362908-A (GB)
Title: Improvements in and relating to the production of nitric acid
IPC: C01B21/26
Filed: 1930-09-08
Abstract: Highly concentrated nitric acid is produced by absorbing oxidized nitrous gases in nitric acid of about 90 per cent concentration, diluting to a concentration of not less than 80 per cent, and treating the mixture with oxygen under pressure. Nitrous gases containing water, produced by denitration of nitrous sulphuric acid in a vessel A, pass to a cooler B, when nitric acid of about 40 per cent concentration condenses, part of which is returned to A.  The gases are supplied with an excess of oxygen and pass through a cooler C to an absorption plant D1, D2, where the nitrogen tetroxide is dissolved in nitric acid of about 90 per cent, which may contain about 5 per cent dissolved tetroxide. Cooling water having a temperature even exceeding 20 DEG  C. may be used.  Residual gases may be absorbed in water.  The <PICT:0362908/III/1> acid leaving the absorption plant, preferably containing about 20 per cent tetroxide, is mixed in E with dilute acid from the condenser B sufficient to supply the water required for conversion into nitric acid by treatment with oxygen in a pressure vessel F, at a temperature of about 40 to 50 DEG  C.  The oxygen is supplied by a compressor K2 at about 5 to 10 atmospheres or more, and part is discharged through a valve V2 and added to the nitrous gases.  The discharge acid, preferably of the same composition as the absorption acid, passes to a vessel I, from which part is supplied to the vessel D2 and the rest to a bleaching plant G.  The expelled tetroxide is returned, and the bleached acid distilled in H to give acid of, for example, 98 per cent, while the remaining acid of about 70 per cent is led to the vessel E.  By maintaining the liquid level here constant it is only necessary to control the quantity of acid flowing from the vessel I to the distillation plant.  Specification 131,642, [Class 1 (ii), Inorganic compounds, other than &c.], is referred to.
Patent GB-1116805-A (GB)
Title: Improvements in or relating to balances for precision weighing
IPC: G01G1/40
Filed: 1965-06-25
Abstract: 1,116,805. Weighing apparatus. SARTORIUSWERKE A. G. June 25, 1965 [June 25, 1964], No. 26946/65. Heading G1W. A precision balance which is adaptable to perform a rough preliminary weighing and a subsequent precision weighing and which is provided with an optical reading system comprises a spring which acts on a beam of the balance during the preliminary weighing and which is disengaged therefrom during the precision weighing. As shown, a pivoted beam 1 which is provided at one end with a counterweight 15 is arranged to bear on the free end of a leaf spring 29 during a preliminary weighing operation so as to deflect the spring 29 by an amount proportional to the weight of a load supported on a scale pan 9 from the other end of the beam 1. A micro-scale 17 mounted on the counterweight end of the beam is projected by an optical system comprising an adjustable deflector 21 on to a screen 23 which is provided with a fixed pointer against which the approximate weight of the load is indicated. The balance is set for precision weighing by manually rotating a cam device 37, 39 which so actuates a vertically movable sleeve 41 attached by means of a chain 33 and a transverse member 47 to the spring 29 that the sleeve 41 is lowered to disengage the member 47 from lugs 49 on weight actuating rods 25 and to pull the free end of the spring 29 away from the beam 1. The disengaged rods 25 then engage cam discs 27 which, prior to change-over to the precision weighing operation, are rotatably positioned in accordance with weight readings obtained during the preliminary weighing operation to ensure that weights 13 in accordance with the preliminary weighing operation are deposited on panniers 11 attached to the scale pan 9 at the commencement of the precision weighing operation. The readings of a digital indicator 50 actuated in accordance with the deposited weights 13 are then supplemented by readings obtained on the screen 23 from the projected micro-scale 17 to provide an accurate weight indication of the load. Cams 55, 51 which bear on an arm 53 attached to the deflector 21 during the preliminary weighing operation and the precision weighing operation respectively are each independently adjustable for zero setting of the projected microscale readings and a digital indicator may be associated with the cam 51 Fig. 3 (not shown) to provide further accuracy in readings of the weight of the load.
Patent GB-519185-A (GB)
Title: Improvements in fixing means for extensible hanging ladders
IPC: E06C9/14
Filed: 1938-09-15
Abstract: 519,185. Ladder escapes. BOOR, J., and GRAVITY LADDERS, Ltd. Sept. 15, 1938, No. 26995. [Class 20 (ii)] A collapsable ladder escape is attached to a swinging frame normally disposed below the window in a room and when required for use is swung through the window and supported at its upper end by the frame. The swinging frame comprises side arms 3 and a lower cross-bar 4 on which is freely suspended a collapsable ladder 6, the upper ends of the side arms being pivotally mounted on a bracket 1 disposed inside and below the level of the window opening 8. The ladder may be suspended by hooks 10, or alternatively by slotted bars in which case the ladder moves outwardly along the slots as the pivoted frame is rotated through the window space.
Patent GB-1269239-A (GB)
Title: Web moistening device
IPC: D21G7/00
Filed: 1969-05-28
Abstract: 1,269,239. Moistening webs. FUJI PHOTO FILM CO. Ltd. 28 May, 1969 [28 May, 1968], No. 27056/69. Heading D1L. A web 9 contacting rollers 1, 2 spaced apart in a vessel 23 from a chamber 24, and steam ejected through an orifice 17 into the chamber is condensed on the web and rollers, so that moisture on the rollers transferred to the web. The rollers 1, 2 are mounted on shafts 3, 4 respectively so as to define cylindrical passages 7, 8 respectively for heated fluid, the amount of moisture condensing on the rollers being controllable by the temperature of and the amount of fluid flowing through the passages 7, 8. The rollers 1, 2 are coupled together and roller 1 is rotated by a variable speed motor (Fig. 1, not shown). Channels 20, 27, 28 are provided beneath the spray device and rollers respectively for discharging waste fluid.
Patent GB-1536145-A (GB)
Title: Tdm telecommunications switching systems
IPC: H04Q11/04
Filed: 1975-06-26
Abstract: 1536145 Automatic exchange systems PLESSEY CO Ltd 14 June 1976 [26 June 1975] 27075/75 Heading H4K In a time space time switching system in which two separate simplex connection paths, using time channels spaced a half switching frame apart, are established for each duplex connection, the intermediate stores used for time switching are addressed by a holding store arrangement from which each address word is read out twice during each switching frame and used for both simplex connection paths for the corresponding connection. The figure shows the preferred organization of the network. Channels on incoming highways RH1 to RHN are time switched in intermediate stores RT Gl to RT GN into switching time slots and supermultiplexed in groups G1 to GN on to intermediate highways RS1 to RSM which are spaced switched over a network S to outgoing intermediate highways TS1 to TSM from where they are distributed to intermediate stores TTG1 to TTGN for time switching into time slots on outgoing highways TH1 to THN. To set up a duplex connection two separate paths must be set up as indicated at A#B and B#A. The two paths employ time channels separated a half a switching frame apart. Thus, for example, for the connection between subscribers A and B holding store GCS1 addresses the location A of time switch store RTG1 while holding store GCSM addresses the location B of the time switch store TTGN for the first time channel, then for the other time channel which is established half a switching later the same addresses are again read out from holding stores GCS1 and GCSM and used to address locations A and B in time switch stores TTG1 and RTGN, respectively. Delays DP are included in the switching paths to bring the transmission delay through the space network up to an odd number of switching time slots. The holding stores must thus provide the repeated address after a delay equal to half a switching frame plus this transmission delay. Two embodiments of the holding stores are outlined. In one embodiment the store is divided into two sections, the storage locations being read by two counters each of which address all locations of both stores cyclically but which are out of phase such that they always address different sections, the words accessed by one counter being always used to address the time switch stores on the incoming side while the other counter is used for the outgoing side. In the other embodiment the holding store has only half the number of locations, each location storing two addresses used as incoming and outgoing addresses during the first half cycle and as outgoing and incoming addresses during the second half cycle.
Patent GB-485523-A (GB)
Title: Improvements in steel traps
IPC: F16T1/24
Filed: 1937-10-06
Abstract: 485,523. Steam traps. GERDTS, G. F. Oct. 6, 1937, No. 27088. Convention date, Nov. 6, 1936. [Class 64 (ii)] Direct communication between the valve e and the steam space t of a float-operated steam trap is prevented by an enclosing chamber m having a horizontally extended opening o considerably larger than the discharge passage g of the valve and arranged with its upper edge p below the lowest water level. The valve is controlled by a rock-shaft v operable by the lever arm d of the float, which arm may be outside the chamber m or, as in a modification, inside the chamber when it is bent to form an elbow located in the opening o. In the latter modification, the side walls of the chamber m, Fig. 5, may be common with the side walls of the trap and inspection windows z may be provided therein. In a further modi. fication, the valve comprises a slotted slide el, Fig. 9, moving between slotted guide plates f<1>, the slots registering in the open position of the valve. The slide is reciprocated by the float through the medium of the lever arm d and a slotted arm d<1>. 1. The slight vortex formed above the valve may be broken by covering the valve inlet with a cage z<3> containing balls, or with a fan-shape distributer, or with a horizontal sieve.
Patent GB-822621-A (GB)
Title: Vulcanisable compositions
Inventor: BIRLEY ARTHUR WILLIAM
IPC: C08L21/00
Filed: 1956-09-05
Abstract: A composition which on vulcanizing exhibits increased reinforcement contains natural or synthetic rubber and a proportion, e.g. 5 to 25%, based on the total weight, of isotactic polypropylene, i.e. any solid polymer of propylene which consists mainly of crystalline polypropylene.  Polypropylenes of melt viscosities at 190 DEG  C. between 104 and 105 poises and at least 70% by weight, insoluble in hot heptane, are preferred. Specified synthetic rubbers are copolymers of butadiene and styrene or acrylonitrile, copolymers of isoprene and isobutylene, and polymers and copolymers of chloroprene. Examples are concerned with vulcanizable natural rubber compositions containing as antioxidant bis - (2 - hydroxy - 3 - t - butyl - 5 - methyl phenyl) methane or bis-(2-hydroxy-3-alpha - methylcyclohexyl - 5 - methyl phenyl) - methane and vulcanizable compositions containing an isobutylene-isoprene copolymer, and a copolymer containing 75% butadiene and 25% styrene.
Patent GB-806478-A (GB)
Title: Improvements relating to containers for fluids
Inventor: BILLETT AUBREY JOHN
IPC: B65D25/20
Filed: 1955-09-23
Abstract: 806,478. Anchor-nuts. PARKINSON & COWAN, Ltd. Sept. 24, 1956 [Sept, 23, 1955], No. 27152/55. Class 89(1) [Also in Group XVII] A metal nut 6 is secured to a wall 11 by forming an imperforate depression 12 in the wall, Fig. 5, and then soldering the nut therein. The tapped hole 7 in the nut, Fig. 2, need not extend right through it.
Patent GB-321153-A (GB)
Title: Improvements in sound records and recording machines
IPC: G11B3/00
Filed: 1928-04-19
Abstract: 321,153. Columbia Graphophone Co., Ltd., and Mitchell, F. A. April 19, 1928. Divided on 320,910. Feed-mechanism; records, duplicating; soundgrooves.-Relates to machines for producing records wherein the pitch distance between consecutive turns of the spiral groove is varied to accommodate different amplitudes in the sound trace being recorded. According to the invention. the variation in pitch distance is controlled entirely or partly automatically. In the machine shown in Fig. 1, the turntable T is rotated by means of a motor-driven pulley D, and its spindle drives through worm gearing T', S<5> a shaft S<4> . This drives a friction disc H<3>, operating a contact arm H<1>, as described in Specification 320,910. The shaft S<4> also operates feedmechanism for the recorder F<3>, R, such mechanism comprising a nut Y<2> mounted on a screwed extension S<6> of the shaft S<4> and acting on a lever Y. This lever is pivoted on a nut Y<1> mounted on a second screw S<7>, and feeds the recorder-carrier F<3> forward as the nut Y<2> moves. The shaft S<7> and nut Y<1> are normally stationary, and the rate of feed of the recorder is low, but when sounds of large amplitude are being recorded, a motor M<2> is automatically started or is clutched to the screw S' at M<3>, and the screw is thereby driven. The rate at which the recorder is traversed is thus increased. This automatic action is effected by connecting the microphone E that picks up the sounds to an amplifier E<1> which has a divided output. One branch includes an amplifier E<3> which operates the recorder R; the other feeds a secondary amplifier E<2> which is combined with any known form of sensitive relay adapted to pass current through a magnet U whenever the output from the power valve exceeds a predetermined amount. By this means, when sounds of large amplitude affect the microphone E, the magnet U is energized, and the arm H<1> is attracted, breaking at V the circuit through a magnet Z. Thereupon contacts Z<1> are allowed to close, and the motor M<2> is started or clutched in to drive the screw S<7>. The parts H<3>, H<1> constitute a slow-return device for suitably delaying the change back to the normal low rate of feed of the recorder, as described in Specification 320,910, which Specification also describes another machine to which the present invention may be applied. The contact H<1> may be driven independently of the shaft S<4>. Change-speed gearing may be used instead of the gearing T<1>, S<5> when necessary. An ordinary master record may be used to control the pitch distance in another record made therefrom. This may be done by using two pick-ups R', R<2> on the master record, Fig. 2, one pick-up being connected to the amplifier E<2> to control the pitch, and the other being connected to the amplifier E<3> for the recorder. Alternatively, the two pick-ups may be used simultaneously with separate copies of the same master record. Means for biasing the recording stylus, as described in Specification 320,910, may be employed.
Patent GB-880847-A (GB)
Title: Coupling for pipes
IPC: F16L21/00
Filed: 1959-08-10
Abstract: 880,847. Pipe couplings. STONEWARE Ltd., and WALLBANK, J. W. Aug. 10, 1960 [Aug. 10, 1959], No. 27218/59. Class 99(1). A pipe coupling consists of a resilient sleeve having an internal flange 10 intermediate its ends; a peripheral, radially directed slit 11 extending into the sleeve in register with the flange 10. The sleeve is internally tapered on both sides of the flange and is bonded to the pipe by means of a waterproof adhesive coated on the pipe end, the latter being provided with circumferential grooves.
Patent GB-431749-A (GB)
Title: Improvements in and relating to the spindles of ring spinning, ring doubling, and like frames
IPC: D01H7/04
Filed: 1934-09-22
Abstract: 431,749. Combined bolster and footstep bearings. HOWARD & BULLOUGH, Ltd., and WALSH, J., Globe Works, Accring- ton, Lancashire. Sept. 22, 1934, No. 27253. [Class 12 (i)] [See also Group IX] In ring - spindle apparatus for spinning and like frames of the kind in which the support or mounting is adapted to roll in accordance with the precessional movement of the spindle upon a surface adjacent to the wharl or other driving-means, the surface 3x upon which the mounting 3 rolls is situated at or below the level of the lower end of the spindle, control means, such as a split ring or hoop 7 as described in Specification 342,628, is mounted above the surface, and an inner bearing-tube 5 is fitted in the mounting 3 and provided with lubricating apertures 5x, 5y and a positioning projection 6. An extension 3y of the mount may engage a recess in the bolster fitting with clearance for the rolling movement. This extension is not necessary and, in any case, is of small dimensions.
Patent GB-1474299-A (GB)
Title: 3-deazaguanine and derivatives thereof
IPC: C07H19/052
Filed: 1975-06-27
Abstract: 1474299 Imidazole and imidazo[4,5-c]- pyridine derivatives ICN PHARMACEUTICALS Inc 27 June 1975 27276/75 Headings C2C and C2P [Also in Division C3] The invention comprise imidazole and imidazo[4,5-c]pryidine derivatives of the Formulµ Ia and Ib wherein X is NH 2  or OCH 3 ; Y is or -NHR, where R is H or carboxylic acryl; Z is H, 2-tetrahydropyranyl, a #-D-ribofuranosyl group or a C 1-18  carboxylic acid group or isopropylidene derivative thereof, a 5-deoxy-#- D-ribofuranosyl group or a C 1-18  carboxylic acyl or isopropylidene derivative thereof; a #-D- ribofuranosyl-5-phosphonate or C 1-18  carboxylic acyl or isopropylidene derivative thereof, or a #-D-ribofuranosyl-3,5-cyclic phosphate group or a C 1-18  carboxylic acyl derivative thereof, and physiologically acceptable salts thereof, and their preparation. The imidazo[4,5-c]- pyridine derivatives of Formula Ib above are prepared by cyclizing the corresponding imidiazole derivative of Formula Ia above in which X is OCH 3 , obtained by dehydrating methyl 4(5) - carbamoylmethyl - 2 - oxo - 4 - inidazoline-5(4)-carboxylate and reacting the compounds thus obtained in which Z is H in known manner to give the corresponding compounds in which Z is other than H. Compounds of Formula Ia in which X is NH 2  are prepared by reacting the corresponding compounds in which X is OCH 3  with liquid ammonia. The 3<SP>1</SP>,5<SP>1</SP>- cyclic phosphates are obtained from the corresponding S<SP>1</SP>-phosphates resulting from the phosphorylation of the corresponding compounds in which Z is #-D-ribofuronosyl. Methyl 4(5) - carbamoylmethyl - 2 - oxo - 4- imidazoline - 5(4) - carboxylate is prepared by reacting methyl 5-methoxycarbonyl-2-oxo-4- imidazoline-4-acetate with ammonia. Pharmaceutical compositions contain the above compounds together with pharmaceutical acceptable diluents or carriers. The compounds possess antiviral, antitumour or antibacterial activities.