baber/WOPTO huggingface dataset:
Patent GB-1435323-A (GB)
Title: Audio amplifiers
IPC: H03F1/52
Filed: 1973-05-10
Abstract: 1435323 Transistor amplifying circuits HITACHI Ltd 10 May 1973 [10 May 1972] 22285/73 Heading H3T An audio amplifier is provided with a starter circuit whereby, when the amplifier is switched on, the potential of the output terminal is gradually raised to the working value, the starter circuit including a device which is conductive at switching on but is automatically rendered non-conductive when the amplifier reaches a steady state. In a first embodiment, the amplifier comprises the quasi-complementary class B output stage Q8-Q11 Fig. 1, driven by a Darlington pair Q6, Q7. The input circuit comprises long-tailed pair Q1, Q2 with transistor Q3 as common emitter impedance, driving the Darlington pair Q6, A7 via transistor Q4 which has transistor Q5 as load in the collector circuit. Resistors R8, R12 and capacitor C3 apply negative feedback to the transistor Q2. The starter circuit ST comprises transistors Q12, Q13; at switching on, capacitor C2 is not charged, and consequently these transistors are conductive respectively charging capacitor C3 and rendering transistors Q6, Q7 conductive and bringing potential V Q  to earth level. The Specification gives a detailed account on which the various potentials in the circuit reach their final values: when capacitor C2 is fully charged, transistors Q12, Q13 are cut off. A second amplifier described in the Specification comprises a complementary output stage Q34-Q37, Fig. 3, with driving stage Q29-Q33 which in turn is driven by input stage Q22-Q28: the starter circuit comprises transistor Q21 and diodes D23, D24, in which the diode D23 is conductive on starting but biased off in normal running. A third amplifier also described in the Specification comprises a quasi-complementary output stage Q45-Q48, Fig. 4 driven by transistor Q44 which is coupled via transistor Q43 to a long-tailed pair input circuit comprising transistors Q41, Q42. The starter circuit comprises transistor resistors R51, R52 and transistor Q49 which is biased conductive at starting, but becomes non-conductive in the steady state.
Patent GB-992116-A (GB)
Title: Improvements in or relating to pipe fittings
Inventor: MURPHY MICHAEL
IPC: F16L55/172
Filed: 1961-06-21
Abstract: 992,116. Pipe fitting. WILLIAM KENYON & SONS (POWER TRANSMISSIONS) Ltd. June 19, 1962 [June 21, 1961], No. 22380/61. Heading F2G. A pipe fitting for repairing fractures or leaks in pipes and for other purposes comprises a pair of co-operating half cylindrical members 11 compressed around the pipe 12 by means of two or more nuts and bolts 13 passing through holes in the longitudinally disposed wedge-shaped flanges of the members 11 and C-shaped clamping members 14 engaging the flanges to keep the members 11 clamped together when the bolts 13 are removed. Sealing means (not shown) situated between the members 11 and between the members 11 and the pipe 12 are positioned in grooves (not shown) in the inner surfaces of the members 11. One of the members 11 can be provided with a screw-threaded through hole to receive a connection pipe. Specification 731,896 is referred to.
Patent GB-489681-A (GB)
Title: Improvements in or relating to the cooling of hydraulic power transmitters on vehicles
IPC: F01P3/12
Filed: 1937-08-14
Abstract: 489,681. Hydraulic transmission of power. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH MASCHINENFABRIK, J. M.). Aug. 14, 1937, No. 22392. Convention date, Aug. 14, 1936. [Class 69 (ii)] [Also in Group XIII] The operating liquid of a hydraulic transmission B of a vehicle driven by a liquid-cooled internal-combustion engine A is cooled in a heat-exchanger D by a part of the engine cooling-water circulated in parallel with that through the engine jacket and between the engine radiator E and the heat-exchanger by a pump C driven from the primary shaft b<1>. The operating liquid may circulate through a coil d<1> surrounded by the cooling-liquid in the heat-exchanger, which may be built as a unit with the transmission casing.
Patent GB-734997-A (GB)
Title: Improvements in slag tap furnaces
IPC: F23C3/00
Filed: 1953-08-14
Abstract: 734,997. Slag-tap furnaces. BABCOCK & WILCOX, Ltd. Aug. 14, 1953 [Aug. 16, 1952], No. 22433/53. Class 51 (1). A slag-tap furnace comprises a cyclone furnace chamber 1 discharging into a secondary furnace chamber 3 which in turn leads past a slag screen 10 to a radiation chamber 14, the rear wall of the secondary furnace chamber having an inward projection 11 the presence of which improves the uniformity of the distribution of the furnace gas stream across the flow area of the radiation chamber.
Patent GB-1424276-A (GB)
Title: Shield type self advancing roof support system for supporting the roof of a longwall face in a mine
IPC: E21D23/00
Filed: 1973-05-10
Abstract: 1424276 Advancing mine roof support systems BOCHUMER EISENHUTTE HEINTZMANN & CO 10 May 1973 [19 May 1972] 22439/73 Heading E1P In an advancing mine roof support system for a longwall face comprising a plurality of support units each having a sleeper resting on the floor, an arcuate casing shield 9, a cantilever roof bar 10, at least one prop 12 and one or more advancing rams 20 for coupling each of the sleepers to a rigid face conveyor 5, the conveyor is provided with one or more guide bars 19 per sleeper and the configuration of the guide bars and sleepers is such that relative sliding movement therebetween is exclusively confined to the direction of their common longitudinal axis. The advancing ram may be disposed within the guide bar 19 or mounted centrally of two sleepers each associated with an individual guide bar, see Fig. 4 (not shown).
Patent GB-294991-A (GB)
Title: Improvements in and relating to energy responsive devices
IPC: B64F1/20
Filed: 1928-08-03
Abstract: 294,991. Westinghouse Electric & Manufacturing Go., (Assignees of Spooner, T.). Aug. 3, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Sounds, actuating apparatus by. - Relates to apparatus wherein sound, wireless, or other waves emitted by an aeroplane are used to actuate the light-controlling devices at the landing field. The apparaus is not limited to this application. Such sound waves are received by an upwardly-directed horn 1 having a drain 4 and a microphone 3 connected through an amplifier 5, a frequency band filter 6, and an amplifier 7 to the primary of a step-up transformer 8, which impresses a varying potential on the grid 12 of a glow discharge relay 11 of the type described in Specification 280,870. The grid 12 is connected through a fixed condenser 14 to the anode 15 of the tube 11, the cathode 9 being connected to a terminal of the secondary of the transformers 8. The circuit from the cathode 9 to the anode 15 is energized by a stepdown transformer 17, the primary of which is connected to the power mains 18. The power supply from the mains 18 has a longer period than that supplied by the transformer 8. The circuit energized by the transformer 17 includes a relay 21, preferably shunted by a condenser 22, controlling a circuit including the winding 23 of a slow-acting, alternating-current relay which rotates a disc 24 against the action of a spring 25 and brings a contact 26 into engagement with a contact 27, thereby lighting the flood lamps 33. A holding relay 28 maintains the illumination until after the landing is completed, when an attendant first closes and then opens a switch 34 to extinguish the lamp.
Patent GB-1506239-A (GB)
Title: Studded cutting tip for drilling rock
IPC: E21B4/14
Filed: 1975-05-23
Abstract: 1506239 Drill bits UGINE ACIERS 23 May 1975 [12 June 1974] 22595/75 Heading B4C [Also in Division E1] A cutting tip 1 for drilling rock by means of down-hole hammer drill comprises a body 2 which has a working face 3 provided with studs 4, and a tail 5 for mounting in a drill socket 6, the latter having bores 7 for introducing gas under pressure. The trailing end of the body 2 opposite the working face and adjacent the socket 6, is formed with peripheral recesses 9 situated in the extended path of the socket bores 7 and directing part of the gas supply on to the periphery 10 of the cutting tip. At least one bore 11 extends in the body 2 from each recess 9, obliquely of the longitudinal axis 12 of the cutting tip, to emerge at the working face 3, so directing the remainder of the gas supply on to the working face.
Patent GB-478633-A (GB)
Title: Web renewing mechanism for printing machines
IPC: B65H19/18
Filed: 1936-07-18
Abstract: 478,633. Feeding webs. HOE & CO., Ltd., R. (Hinkel, O.) July 18, 1936, No. 22605/37. Divided out of 478,578 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 1, 1937. [Class 100 (i)] A web-renewing mechanism for a printing- machine comprises a support for a running roll and a new roll, means for speeding up the new roll, a web-deflecting device manually energized to press the running web into contact with the new roll, a severing device for severing the old web, locking mechanism for normally holding the web deflecting and severing devices against operation, and a control' mechanism comprising two elements which when actuated together release the locking mechanism, one element being operated in each rotation of the new roll and the other being arranged for manual operation. In one form, the construction is the same as that described in Specification 478,578, and comprises a chain or cable 54 for moving the web-deflecting brush 26 so as to press the running web 24 against the rotating new roll 13, the cable being connected to the brush supporting arm 31 and to an arm 56 actuated by a hand lever 61. A catch prevents movement of the arm 31 until a catch-releasing solenoid 18 is energized by the closure of two switches 17, 19 in series, the switch 19 being actuated by the handle 62 of the hand lever 61 and the switch 17 being closed by a cam 64 once in each rotation of the new roll. In a modification, the cable 54, instead of being attached directly to the arm 56, is connected to one end of a coiled spring, the other end of which is connected to the arm 56. In a further form, the hand lever 61 is operatively connected to the arm 56 through a torsion spring arranged on the pivot shaft of the handle and arm. Specifications 410,785, 453,112, 478,630, and 478,632 also are referred to.
Patent GB-1379790-A (GB)
Title: Process for producing 7-acylamido-3-cephem-4-carboxylic acids
IPC: C07D501/06
Filed: 1972-05-15
Abstract: 1379790 Cephalosporanic acids TOYAMA CHEMICAL CO Ltd 15 May 1972 [28 Dec 1971 (2)] 22626/72 Heading C2C The invention comprises a process for the preparation of 7-acylamido-3-cephem-4- carboxylic acids in which salts of 7-amino-3- cephem-4-carboxylic acids of Formula III in which R<SP>1</SP> is hydrogen, halogen, azido, acyloxy, alkyloxy, aryloxy or S-R 1  in which R 1  is alkyl, aryl or a heterocyclic group, are reacted with reactive derivatives of a carboxylic acid of the general Formula II  in which R<SP>2</SP> is hydrogen, substituted or unsubstituted alkyl, aryl, cycloalkyl, cycloalkenyl or a heterocyulic group, R<SP>3</SP> is the same as or different to R<SP>2</SP> and may be any of the R<SP>2</SP> groups or halogen, cyano, hydroxy, azido or Y-R 11  (Y is O, S, NH or COO- and R 11  is alkyl, aryl, aralkyl or a heterocyclic group), or may jointly form a ring with R<SP>2</SP> and R<SP>5</SP> is hydrogen or an amino group protected as a salt or an amino group protected in the N-position, in the presence of an alcohol as solvent, and then converting the group R<SP>5</SP> to an amino group when R<SP>5</SP> is a protected amino group, to produce a 7-acylamido-3-cephem-4-carboxylic acid of general Formula I in which R<SP>4</SP> is a hydrogen atom or an amino group, Carboxylic acids which may be employed include N-(1-N<SP>1</SP> 1 N<SP>1</SP>-dimethylamino-carbonyl - 1 - propen - 2 yl) - D - ( - ) - α - aminophenylacetic acid, N-(1-ethoxycarbonyl-1- propen - 2 - yl) - D - (-) - α - amino - phenylacetic acid, D-(-)-α-aminoacetic acid, N-(#,#,#- trichloroethoxycarbonyl) - D - (-) - α - aminophenylacetic acid, N-(1-morpholinocarbonyl-1- propen - 2 - yl) - D - (-) - α - amino - 1,4 - hexadienylacetic acid, N-(1-morpholinocarbonyl-1- propen-2-yl)-D-(-)-α-aminophenylacetic acid, N - (1 - pyrrolidinocarbonyl - 1 - propen - 2- yl) - D - (-) - α - aminophenylacetic acid, 1,4 - bis - {3 - [D - (-) - α - carboxybenzylamino]crotonyl} - piperazine, N - (1 - piperazinocarbonyl - 1 - propen - 2 - yl) - D - (-) - α- aminophenylacetic acid, N-(1-pyrrolidinocarbonylpropen - 2 - yl) - D - (-) - α -amino- (4-hydroxyphenyl)-acetic acid, phenoxypropionic acid, thienylacetic acid, 1-(1-H)- tetrazolylacetic acid and 4-pyridylthioacetic acid. The invention also comprises 7-[N, (#,#,# - trichloroethoxycarbonyl)- D - (-) - α- amino - phenylacetamido] - 3 - methyl - 3 - cephem - 4 - carboxylic acid and 7 - [N - (1- morpholinocarbonyl - 1 - propen - 2 - yl) - D- (-) - α - aminophenylacetamido] - 3 - methyl - 3- cephem-4-carboxylic acid.
Patent GB-188424-A (GB)
Title: Improvements in rotary calcining furnaces
IPC: F27B7/38
Filed: 1921-08-26
Abstract: 188,424. Stehmann, H. Aug. 26, 1921. Rotary furnaces; shaft furnaces; cooling discharged materials.-In apparatus for calcining cement, magnesite, &c. comprising a rotary furnace a, which discharges into a shaft c where the cement &c. is cooled by the air to be supplied for combustion in the rotary furnace, the shaft is of such a size, and the air supply and the automatic discharge means are so controlled, that the air will be heated up to the ignition temperature of the fuel before entering the rotary furnace. The lower end of the shaft is enclosed to prevent uncontrolled admission of air and is provided with an automatic discharge device of any known construction. The cooling-air is supplied in part beneath the grate d by the fan f<1> and in part at a higher level in the shaft by a fan f which draws its supply from a jacket e around the lower end of the rotary furnace. The hot air leaves the shaft through the neck g where it meets a further supply of air drawn from the jacket e and delivered by a fan f<2> through the conduit g<1>. The clinkering of the material may be completed in the upper part of the shaft, the necessary heat being furnished by fuel supplied through the opening h. When the apparatus is worked in this manner the clinkering zone b may be shortened. The calcining-zone may be divided by longitudinal partitions i into four separate chambers.
Patent GB-1120711-A (GB)
Title: Supporting means for door canopies
Inventor: BAINBRIDGE HAROLD
IPC: E04F10/00
Filed: 1964-06-02
Abstract: 1,120,711. Canopy supporting device. BAINBRIDGE BROS. (ENGS.) Ltd. 23 Aug., 1965 [2 June, 1964], No. 22712/64. Heading E1W. A device for supporting a door canopy comprises a plate or bracket 39 adapted to be secured to a lintel or building framework L by bolting, and a plurality of channel members 40 rigidly secured to the plate or bracket and extending in a direction outwardly away from the building when the device is in use to receive and support the canopy. In the embodiment of Fig. 5 the lintel or building framework L is sandwiched between the plate or bracket 39 and a front plate 41, but in other embodiments, Figs. 1-4 (not shown), the plate or bracket 39 is bolted to the front face of a lintel and the channel members 40 may also project rearwardly for engagement within sockets provided in the lintel.
Patent GB-1514816-A (GB)
Title: Composite nickel-iron electroplate and method for electroplating
IPC: C25D5/14
Filed: 1975-05-23
Abstract: 1514816 Electro-plating nickel-iron alloy OXY METAL INDUSTRIES CORP 23 May 1975 [3 March 1975] 22803/75 Heading C7B A metallic substrate, e.g. a Cu, brass or steel panel preferably electro-plated with a Cu layer (e.g. 10 or 15Ám thick), is electro-plated first with at least one Ni-Fe alloy first layer (e.g. at least 10Ám thick) having a relatively high Fe content of 15 to 40%, then with at least one second layer of Ni-Fe alloy (e.g. 2.5 to 10Ám thick) having a relatively lower Fe content of 5 to 14%. The uppermost Ni-Fe alloy layer may be electro-plated with a Ni layer (e.g. 3Ám thick) preferably microcracked and having inorganic particle inclusions therein, in turn electro-plated with a microdiscontinuous, preferably micro-cracked Cr layer (e.g. 0.25 to 0.4Ám thick). The Ni-Fe alloy composite may be electro-deposited from a plurality of solutions or the same solution containing one or more salts of Ni and Fe, e.g. nickel and ferrous sulphate, chloride, sulphamate and/or fluoroborate, with complexing agents such as hydroxy C 2-8  aliphatic carboxylic acids e.g. citric, malic, glutaric, gluconic, muconic, glutamic, glucoheptonic, glycolic or aspartic acid, at pH 2.5 to 5.5 and C.D. 10 to 70 ASF. With the same solution, the reduction of Fe content can be achieved by reducing in stages air agitation (for high Fe content) to nil (for lower Fe content). Soluble anodes of Fe or Ni-Fe alloy may be used. S-O compound or acetylenic Ni brighteners or organic sulphides may be used in the plating bath.
Patent GB-1084495-A (GB)
Title: Container stacking
Inventor: WILKINSON LEONARD ONLEY
IPC: B65D21/02
Filed: 1965-05-28
Abstract: 1,084,495. Refuse container. FLETCHER & STEWART. May 27, 1966 [May 28, 1965], No. 22834/65. Heading A4A. [Also in Division B8] A cylindrical container, particularly for refuse, and which is adapted to rest with its major axis horizontal comprises pairs of feet on the under surface of its periphery, and pairs of brackets on the upper surface, so that a container may be stacked with its feet resting on the brackets of a similar container below. The container may have doors at each or one end, and a closure at one end may be a piston pusher plate used to compress or bale the contents and effect discharge thereof. The container may have lugs &c. for handling by cranes &c.
Patent GB-1506274-A (GB)
Title: Side channel ring compressor
IPC: F04D23/00
Filed: 1975-05-23
Abstract: 1506274 Circumferential flow pumps SIEMENS AG 23 May 1975 [23 July 1974] 22943/75 Heading F1C In a side-channel compressor, the ratio of the surface area of each impeller blade to the crosssectional area of the side channel is not greater than 0À72 and may be equal to 0À51; and the ratio of the blade pitch to the width of the side channel is not greater than 0À72 and may be equal to 0À64. This permits the achievement of a higher pressure  ratio and higher efficiency.
Patent GB-644123-A (GB)
Title: Improvements in television transmission systems
IPC: H04N9/44
Filed: 1946-08-02
Abstract: 644,123. Television. STANDARD TELEPHONES & CABLES, Ltd. Aug. 2, 1946, No. 23099. Convention date, Sept. 27, 1945. [Class 40 (iii)] [Also in Group XL (c)] A television transmission system comprises means for producing horizontal synchronizing, vertical synchronizing, colour phasing and sound pulses constituting sets of pulses distinguished according to a given pulse characteristic, e.g. pulse width, and means for further distinguishing certain of said sets of pulses from the others by a difference in another pulse characteristic, e.g. build-up time. In the wave form shown in Fig. 1, the line synchronizing pulses 2 are superimposed on line blanking pulses 3 which also carry sound signal pulses 4, narrower than the line pulses and whose displacement from the line pulses is modulated according to the sound to be transmitted. The vertical blanking pulse 6 carries one or more vertical synchronizing pulses 7 (71, 711, 7<SP>111</SP> ... ) substantially wider than the line pulses 2, but narrower than colour phasing pulses 8. The various control pulses are generated by conventional circuit arrangements comprising a synchronizing source 5 controlling the generation of horizontal and vertical pedestal pulses fed to a mixer 14, the output of which is fed to a mixer 15 and to the camera 16. The outputs of the generators 12, 13 are fed through respective delay devices 17, 19 to generators 18, 20 producing horizontal and vertical pulses, the outputs of which are fed to the mixer 15 and to the camera 16. The output of the generator 13 is fed also to a delay device 21 and a generator 22 for colour control pulses which are fed to the camera 16 and to the mixer 15. Line synchronizing pulses from the generator 18 are passed through a delay device 23 to a sound pulse generator 24 by which the pulses are modulated in phase by the sound to be transmitted from source 25. The modulator 24 may be of the form described in Specification 511,222, [Group XL (c)]. The output from the mixer 15 and the camera 16 are fed via a mixer 31 to the transmission line. The pulses 2, 4 are produced with a short build-up time compared with that of the pulses 7,8. The receiver arrangement, Fig. 6, comprises three discriminator circuits 33a, 33b, 33c arranged to separate the colour phasing pulse, and the horizontal and vertical synchronizing pulses by shock excitation of circuits tuned to correspond to the predetermined widths of the respective pulses. The sound pulses and line synchronizing pulses, which have a steeper rate of build-up than the other pulses, are separated by the operation of a differentiator 35 and subsequent clipping. The demodulator 36 translates the time displacement of the sound signal pulses into pulses of corresponding amplitude. Specification 644,124 also is referred to.
Patent GB-365501-A (GB)
Title: Improvements in and relating to vehicle door constructions
IPC: B60J5/04
Filed: 1931-08-19
Abstract: 365,501. Doors for passenger vehicles. BRIGGS MANUFACTURING CO., 11631, Mack Avenue, Detroit, Michigan, U.S.A.- (Assignees of Ball, A. P. ; 3574, McKinley Avenue, Detroit, Michigan, U.S.A.) Aug. 19, 1931, No. 23370. Convention date, Dec. 8, 1930. [Class 103 (ii).] A vehicle door is constructed from an inner panel A, Fig. 2, having a substantially flat marginal portion or door overlap 1 united by a web forming the top, bottom and side rails 3, 5, 4, 6 respectively to a central depressed portion 2, which in its upper part is provided with a window opening 9, and an outer panel B, Fig. 1, which is secured to the lower side portions 25 of the margin 1 and extends upwardly only to the lower edge 13 of the window opening. In order to form an exterior flush surface, the upper side portions 20; 21 of the margin 1 are offset outwardly at the points 24 where the upstanding portions 22, 23 of the outer panel terminate. At the upper and side edges 11, 10, 12 of the window opening the top rail 3 and side rails 4, 6 are offset inwardly as shown at 2, Fig. 6, and terminate in reversely bent or U-shaped edges 10, the offsets 2 being adapted to accommodate a three-sided frame D containing cushioning and guiding members 31 for the sliding window C. At its edges the outer panel B is crimped over the adjacent edges of the margin 1 to form the lower part of the door overlap, while the upper part of the latter is formed by return bent flanges on the upper edge and parts 20, 21 of the inner panel. Openings 14 .. 19 bordered by inturned reinforcing flanges are cut in the lower portion 7 of the inner panel.
Patent GB-224652-A (GB)
Title: Improvements in or relating to the treatment of granulated pulverulent and the like materials
IPC: F26B17/00
Filed: 1923-09-19
Abstract: A method of treating pulverulent materials chemically consists in moving the material in the same or in the opposite direction to the chemical medium over superposed plates arranged in a casing so as to form a conduit closed on all sides, the casing being oscillated, or the plates oscillated within the casing which is fixed.