baber/WOPTO huggingface dataset:
Patent GB-1396639-A (GB)
Title: Belt drive apparatus
IPC: F16H7/08
Filed: 1973-09-27
Abstract: 1396639 Clutch control INTERNATIONAL HARVESTER CO 27 Sept 1973 [10 Oct 1972] 45213/73 Heading F2L Drive from a pulley 10 to a pulley 15 is transmitted through a belt 12 when an idler pulley 16 is held against the belt to tension it, the pulley 16 being mounted on a lever 18 and biased against the belt 12 by a spring 21 acting on the opposite end of the lever, which is acted upon by a further spring 26 (Fig. 2), 46 (Fig. 6) to disengage the drive. In the embodiment shown in Fig. 2 a leaf spring 26 is mounted on a rotatable shaft 24 and acts against the lever 26 on rotation of this shaft to disengage the drive gradually as it is stressed on rotation of the shaft 24, an arm 25 engaging the lever 18 when the bias of spring 26 substantially equals the bias of spring 21 to positively disengage the drive. The drive is engaged gradually on reverse rotation of shaft 24. The embodiment shown in Fig. 6 has a rotatable shaft 50 with an arm 49 secured to a retainer 46 slidable along a rod 42 against a spring 43, the rod being pivoted on lever 18 as shown so that the spring 43 is compressed on rotation of shaft 50 to pivot lever 18 and disengage the drive (clockwise from the position shown in Fig. 6) and vice versa on engagement, the spring 43 performing an analogous function to the spring 26 of Fig. 2. The drive is described as incorporated in a belt driven tractor.
Patent GB-1395163-A (GB)
Title: Voltage level responsive circuits
IPC: G01R19/165
Filed: 1971-09-29
Abstract: 1395163 Pulse thresholding circuits SOLARTRON ELECTRONIC GROUP Ltd 25 Sept 1972 [29 Sept 1971] 45370/71 Heading H3T In a circuit for thresholding a signal at the mid-level between its peak values, the threshold level is derived by alternately discharging a charge storage device through respective paths to the greater of erect and inverted versions of the difference between the signal and the threshold level, the latter being derived from one of the paths and being such that the discharge through the two paths is equal. In the time-base triggering circuit shown, the input signal from terminal 12 is applied to one input of a comparator TR3, TR4 and a threshold level is applied to the other so as to produce at the two collectors erect and inverted versions of the difference between the signal and the threshold level. These are used to discharge a capacitor C1 through the base-emitter diodes of TR5 and TR6 to whichever version is the larger. The voltage developed across R6 in response to the current in one discharge path is used after smoothing by C2, C3, R7 as the threshold level at a base of TR4 and the effect of this loop is to equalize the currents in TR5 and TR6 so that the mid-level is achieved. The threshold voltage is also applied to one input of a comparator TR1, TR2 to effect thresholding of the signal applied at 12 and the resulting output is squared in circuit 22 to produce a triggering signal for the time base generator 24. The voltage at the emitters of TR5 and TR6 represents the peak-to-peak amplitude of the signal and this may be used to cause the time base to free-run if the signal amplitude is below a given value.
Patent GB-1521138-A (GB)
Title: Piston structure with cavity for an internal combustion engine
IPC: F02F3/26
Filed: 1975-10-31
Abstract: 1521138 IC engine pistons TEXACO DEVELOPMENT CORP 31 Oct 1975 [13 Dec 1974] 45565/75 Heading F1B A piston for an I.C. engine comprises a cavity 38 whose peripheral wall is a right circular cylinder the cavity having an opening 43 eccentric with respect to the axes of the peripheral wall and the piston. Air is induced into combustion chamber 40 via an intake valve 32 and is caused to swirl, e.g. by a shroud on the valve, so that when fuel is injected from nozzle 34 the injection is into swirling air in cavity 38. The direction of swirl carries the rich mixture formed adjacent the nozzle 34 towards a spark plug 37 for ignition.
Patent GB-1428149-A (GB)
Title: Data transmission systems
IPC: H04L1/16
Filed: 1973-10-02
Abstract: 1428149 Data transmission; synchronizing of error correction systems STANDARD TELEPHONES & CABLES Ltd 2 Oct 1973 45883/73 Heading H4P In a synchronous duplex block coded error detection and correction system in which each block includes a portion acknowledging reception of a previously transmitted block from a second terminal which portion includes correct (OK) or request for retransmission (RQ), relative block phase in both directions of transmission is adjusted at one terminal only to maximize loop delay with which the system can operate satisfactorily. Initially, or for resynchronization, a continuous stream of sync. blocks each including (OK) is transmitted from a first terminal while the second terminal transmits a bit stream, reception of which enables bit sync. to be achieved. The sync. blocks on reception are monitored to establish sync. pattern for determination of block sync. which starts a decoder and parity checking means as a preliminary to processing data blocks; sync. blocks are then sent to the first terminal each containing (OK) or (RQ) dependent on parity check. The first terminal then monitors incoming blocks for block sync. which when obtained causes the first terminal to be switched to data transmission, followed by issue of data blocks. The circuit arrangement follows that disclosed in Specification 1,409,184 with certain modifications. Sync. and a start control 1 applies an enabling signal to S output lead and applies an inhibiting signal to cycle control 2 also a continuous OK to store 3. When sync. detector 4 detects that block sync. has been achieved, it sets distributer 5 in correct phase operation and control 1 is signalled; when it also receives OK from parity check unit 6 it removes inhibit from 2 and applies enabling polarity to St output for one block. This causes a "start of data block" signal to be transmitted followed by an enabling polarity on D output and hence transmission of data. At the remote B terminal, which differs from local A terminal, when sync. block detector recognizes the sync. pattern it starts an Rx timing distributer 5, also signals start control 1 which permits distributer 10 to cycle under the control of distributer 13 in the correct phase relative to received blocks. Inhibit from control 1 prevents unit 2 from cycling but condition of store 3 is determined by received blocks. Gate 21 is also enabled. Sync. blocks with RQ/OK bits of appropriate polarity are then transmitted. When St block, as detected by detector 4 and parity check 6, is received, this is signalled to control 1 which enables its St output causing a "start of data block" to be transmitted; this removes inhibit from unit 2 which can then perform retransmission cycles when required.
Patent GB-1362790-A (GB)
Title: Heat exchanges
IPC: B23P15/26
Filed: 1970-09-25
Abstract: 1362790 Making heat exchangers; seaming ASSOCIATED ENG Ltd 24 Sept 1971 [25 Sept 1970] 45900/70 Headings B3A and B3J  Heat exchangers are made from sandwich units 9 each including a corrugated strip of metal 10 bonded on each side to a metal sheet 11 by locating two of the units adjacent each other and seaming together the adjacent sheets of the units. As shown, the units have a hole (15), Fig. 5 (not shown), at each end of the sheets 11 and tubular spacers 45 extend between the holes. The units are assembled on tubes 36 passing through the spacers and formed with side openings which communicate with tubular passages (14), Fig. 3 (not shown), formed between the sheets 11. Apparatus for performing the method includes a platform 38 movable vertically by a pneumatic or other actuator and having mandrels 37 on which the units 9 are located. A transfer device for collecting the units from a magazine on a bracket 34 includes suction grippers 32 movable vertically in a crosshead 25 by a pneumatic jack 28. The crosshead is movable to transfer the units from the magazine to the platform 38 by a pneumatic jack 27. After a unit 9 has been placed on the platform 38, carriages 19 on each side of the unit are traversed along rods 18 by a pneumatic ram 21, the carriages supporting nozzles 39 for applying adhesive (40), Fig. 3 (not shown), to the upper sheet 11. The platform is then lowered and again raised when another unit is in position to be engaged by the mandrels 37 which carry the tubes 36. The next traverse of the carriages 19 for spreading adhesive on the top unit carries seaming rollers 41, 42 on the carriages along the unit, to produce longitudinal seams (Fig. 3) between the top unit and the one beneath. While the carriages 19 are moving, two further nozzles 43 are moved downwardly to apply adhesive across the upper sheet 11 so as to eventually seal the tubular passageways 14 and bond the tubes 36 in position. Seaming rollers may be provided for seaming across the ends of the sheets. A taper 44 on the mandrels 37 is sensed by a detector and prevents operation of the nozzles 39, 43 during the last pass of the carriages.
Patent GB-1488366-A (GB)
Title: Battery charging system
IPC: H02J7/00
Filed: 1974-10-24
Abstract: 1488366 Charging batteries MABUCHI MOTOR CO Ltd 24 Oct 1974 [2 Nov 1973] 46139/74 Heading H2H A system for charging a battery 2 from a battery 1 comprises a non-linear resistance element 5-which is preferably a germanium diode-which element becomes effectively non- conductive when the battery 2 becomes fully charged, the potential difference between the voltages of the batteries 1, 2 then becoming less than that required to sustain conduction of the element 5. In a further embodiment the charge on the battery 1 is arranged to be maintained by a rectifying device connected to an A.C. supply.
Patent GB-1273047-A (GB)
Title: New water-insoluble monoazo dyes
IPC: D06P1/00
Filed: 1969-09-19
Abstract: 1,273,047. Water-insoluble monoazo dyes. BADISCHE ANILIN- & SODA-FABRIK A.G. 19 Sept., 1969 [21 Sept., 1968], No. 46199/69. Heading C4P. The invention comprises water-insoluble azo dyes having the general formula I in which R and R<SP>1</SP> are alkyl radicals having one to four carbon atoms, X is hydrogen, a methoxy group or an ethoxy group, Y is hydrogen, chlorine, bromine or a methyl, ethyl, methoxy, ethoxy, acetylamino or propionylamino group and n is 1 or 2. The red to blue dyestuffs of the invention may be prepared conventionally by diazotization and coupling.
Patent GB-1418389-A (GB)
Title: Metal salts of arylsulphonic acids as ultrviolet stabilizers for light sensitive polymers
IPC: C08K5/42
Filed: 1973-10-04
Abstract: 1418389 Stabilizing polymers EXXON RESEARCH & ENG CO 4 Oct 1973 [16 Oct 1972] 46402/73 Heading C3P Light sensitive polymers are stabilized with (1) an antioxidant and (2) a nickel aryl sulphonate containing 1 to 10 aromatic rings having 1 to 10 aliphatic substituents containing a total of 1 to 100 carbon atoms. The polymers may be polymers of olefins, diolefins, vinyl chloride or acrylic monomers, or polyesters, polycarbonates, ABS resins, cellulosics, phenolic resins, alkyds, polyurethanes, tung oil vehicles, lacquers and varnishes. The sulphonic acid may be derived from benzenes alkylated with propylene tetramer or C 8-18  1-olefins, diphenyl alkanes, mahogany sulphonic acids, disproportionated nalkyl benzenes, and materials known as postdodecyl benzene, NAB bottoms and dimer alkylate. The compositions may also contain conventional stabilizers, e.g. benzophenones, benzotriazoles, substituted acrylates and aryl esters, and pigments, e.g. carbon black and titanium dioxide. Examples describe compositions of polypropylene, commercial antioxidants and nickel dodecylbenzene or dodecylorthoxylene sulphonates.
Patent GB-1015613-A (GB)
Title: Production of 6-demethylchlortetracyline
IPC: C12P29/00
Filed: 1962-12-10
Abstract: 6-Demethylchlortetracycline is produced by growing a methionine-dependent strain of a chlortetracycline-producing micro-organism in an aqueous medium containing assimilable sources of chlorine, carbon and nitrogen, the medium containing concentrations of methionine optional for the production of maximum yields of 6-demethylchlortetracycline.  Preferred micro-organisms are Streptomyces viridifaciens and certain mutants thereof.
Patent GB-1147938-A (GB)
Title: Improvements relating to methods and apparatus for the production of frozen food products
IPC: A23G9/30
Filed: 1966-10-20
Abstract: 1,147,938. Ice cream freezers. LUMEN G.m.b.H. N€HRMITTEL-UND MASCHINENFABRIK. 20 Oct., 1966 [23 Oct., 1965], No. 46935/66. Heading F4H. In an ice cream freezer having a mix supply container 1 and a freezing compartment 9, heating elements 3 and 15 are provided to sterilize the contents prior to cooling and freezing by refrigeration ducts 4 and 14. The freezing compartment has a stirrer 12 and scrapers 13 and is fed with compressed air from a compressor 21 through a system which includes check valves 22 and 30, fillers 23 and 28, a reservoir 25 and a pressure controller 26. The supply container includes a mixer 2, has a sealed cover 19, and has a connection 6 through which water or a disinfectant may be introduced to flow through the apparatus to the dispensing tap 11. The connection 6 and the tap 11 may be so thermally insulated that they are brought to sterilization temperature under the action of the heaters 3 and 15. Thermostats 5<SP>1</SP>, 5<SP>11</SP>, 5<SP>111</SP> 16<SP>1</SP> and 1611 are provided to control the sterilizing and cooling functions of the apparatus. In a modification, Fig. 3 (not shown), the dispensing tap is operated from the compressed air system, and a thermostatically or manually operated valve is included in the connection between the supply container and the freezing compartment. In another modification, Fig. 6 (not shown), a freezing compartment is served by two alternately operable supply containers, one of which is used to prepare and sterilize mix while the other is supplying the freezing compartment. The freezing compartment stirrer and the mixer in the supply containers are independently driven.
Patent GB-1246674-A (GB)
Title: Supports for bedframes or other articles of furniture
IPC: A47C19/00
Filed: 1968-10-03
Abstract: 1,246,674. Furniture joints; bedframes. RUSCO INDUSTRIES Inc. Oct. 3, 1968 [Dec.11, 1967], No.46990/68. Headings A4H and A4J. A support for a bedframe &c. comprises a cross rail 23 provided with horizontal and vertical legs 23a, 23b, and a pair of support legs 24 and angle brackets (25), 26 attached to opposed ends of the rail, the support being removably engaged with side rails 2 (3), of the bedframe by a U-part 13 of each angle bracket engaging around a horizontal leg 2a of the side rail. Rail 23 is in one or two telescopically adjustable sections. Another form Fig. 2 (not shown) of support comprises two legs (16) connected to respective angle brackets (11). The legs may have a removable cap, glide, or castor 18. The angle brackets are retained in position by a box spring(s) 30 carried by the side rails.
Patent GB-1372564-A (GB)
Title: Digital clock
IPC: G04G9/10
Filed: 1971-10-11
Abstract: 1372564 Clocks Y WAKABAYASHI 11 Oct 1971 [16 Nov 1970 28 April 1971]  47146/71 Heading G3T A digital clock comprises an indicating section A with a display formed by segmented electric bulbs 1, and a control section B containing switches 2 and switch-actuating drums 3 controlling corresponding display numerals. As shown the switches are micro-switches 2a-g for corresponding segments (1a-g), Fig.2 (not shown) of a numeral. They may alternatively be formed by metal strips (21a-g), Fig.4 (not shown) which are allowed to touch a fixed contact (21) under the control of a grooved drum (31) or which touch conducting portions of the drum surface. The first drum is driven by a synchronous motor and each steps on the next as appropriate. The switches may control the bulb segments directly or via relays (8a-g), Fig.11 (not shown) in the case of a large, mains powered display using e.g. fluorescent tubes. Each drum may actuate an additional switch (23), Fig.6 (not shown) to ensure that all segments of a numeral are switched on and off simultaneously. The display section A is rotatably and removably mounted on the control section B and may be used at a location remote from the latter. One control unit may thus be used with several display units. The unit B may incorporate a radio receiver.
Patent GB-1410041-A (GB)
Title: Battery terminal
IPC: H01R11/26
Filed: 1972-10-12
Abstract: 1410041 Injection moulding battery terminals CAMELEC Ltd 12 Oct 1972 [14 Oct 1971] 47219/72 Heading B5A [Also in Division H2] Injection moulding die parts 37, 38 have detachable members 51, 52, entered into groove 48, on both sides of inserts 49, in order to mould a resilient plastics casing around an electrical connector, which is designed to fit a frusto-conical terminal post of the kind used on vehicle batteries. During moulding, spigots 39, 44, locate and support a metal connector body 11, of gapped annular form, and inserts 49 partly fill the gap in the annulus. An attached cable 15 has a plastics sheath 17, which is protectively held by recesses 42 in water-cooled blocks 41. The slotted configurations of die members 51, 52, provide three moulded leverage lugs 32, 34, interleaved and projecting in opposing directions. A suggested resilient moulding material is a thermoplastic glass-fibre filled polyester resin, and heating elements 60 may be used to heat the die.
Patent GB-1489099-A (GB)
Title: Photocopying apparatus which includes a power transmission coupling
IPC: G03G21/00
Filed: 1975-11-17
Abstract: 1489099 Shaft couplings KONISHIROKU PHOTO INDUSTRY CO Ltd 17 Nov 1975 [25 Nov 1974] 47346/75 Heading F2U [Also in Division G2] In a photocopying machine the drive, e.g. from a sprocket wheel 2, to different items, e.g. a drum mounted for rotation on the driven shaft 1 and a pulley 7 driven by the shaft through a magnetic clutch 6 to reciprocate a mirror, the shaft coupling 4 comprises a vibration damping member 5. The member 5 may be made of neoprene, polyurethane or vulcanized rubber and formed either as a ring inserted between projections 411, 421 or plates adhered to the projections; alternatively, the member 5 may be inserted between splines on the driving and driven members. The mirror is returned by a sprocket wheel 10 mounted on the pulley 7.
Patent GB-1268577-A (GB)
Title: Folding propeller mechanism
Inventor: SUNDQVIST HELGE
IPC: B63H1/24
Filed: 1970-10-06
Abstract: 1,268,577. Boats' folding propellers. NAUTOR K.B. KOSKENKYLA & CO. 6 Oct., 1970, No. 47436/70. Heading B7V. A folding propeller has blades 2, 21 which are pivoted about a common pivot pin 3 and each carry a bevel gear 5 which meshes with the freely rotatable pinion 6 to ensure that both blades move equally between operative and trailing positions. In a modification the blades have spaced pivots and mesh directly with each other. The blades are thrown out by centrifugal force when the propeller shaft rotates and made to trail by water drag when the shaft stops.
Patent GB-1019666-A (GB)
Title: Treatment of molten metals
Inventor: SEALEY ALAN GEOFFREY
IPC: C21C1/00
Filed: 1962-12-18
Abstract: Molten metal is conditioned by adding a conditioning agent thereto in a vessel, e.g. a ladle, a casting or an ingot mould, in which a gas inert to the metal is being generated from a block of a substance which at the temperature of the molten metal generates the gas, which block is cemented to the interior wall or base of the vessel, preferably by means of a refractory cement or solidification of a fluid slag formed between the block and the interior wall or base by the reaction of exothermically reacting materials such as any oxidizable metal, e.g. Al, Si or Mg, with any oxidizing agent, e.g. iron oxide, MnO2, and/or alkali or alkaline earth metal nitrate or chlorate, and including a siliceous material, e.g. calcium silicide, Fe-Si or silica.  The latter materials may also contain 0.1-15% of any fluoride to steady the exothermic reaction, e.g. Na or K fluoride/cryolite, AlF3, titano-, silico- or boro-fluorides.  The conditioning agent may be an alloying substance, a deoxidizing or carburizing agent, an inoculant (for cast iron), a grain-refining agent or a flux; examples of such are calcium carbide (for desulphurizing molten grey iron), sodium carbonate, lime with or without fluorspar, ferro alloys, e.g. Fe-Cr, graphite or other form of carbon, slags for removing inclusions from the metal, and inoculants for producing spheroidal graphite cast iron.  The cement or composition which reacts exothermically on firing may be applied to one face of the block or recessed therein e.g. in a central aperture of the block which may be ring-shaped.  A heat insulating layer e.g. compacted grog may be provided between the block and fluid slag bonding layer.  The block is preferably of a carbonate, e.g. an alkaline earth metal carbonate such as marble, limestone or dolomite, which generates CO2 causing turbulence in the melt thereby mixing it with the conditioning agent.  The block may also contain additives such as metal shot, substances generating heavy vapours such as camphor, naphthalene or polycyclic hydrocarbons.  Preferably the material of the block is in granular form bonded together; e.g. 60% marble chippings, 28% marble powder and 12% sodium silicate.  Two or more gas-generating blocks may be positioned at intervals on the inner surface of the vessel.
Patent GB-1117918-A (GB)
Title: Improvements in organic photoconductors
IPC: G03G5/022
Filed: 1965-11-11
Abstract: A polymeric composition comprises a thermoplastic polymer containing a dispersion of an organic molecular complex of (a) compounds of formula <FORM:1117918/C3/1> where X is an organic monovalent radical, and (b) an aromatic condensed nuclear compound, the polymer may also form an organic molecular complex with the dicyanoethylene compound. The polymer exemplified is polystyrene which may be dissolved in benzene with the complex. The preferred cyano compound is tetracyanoethylene. The aromatic condensed nuclear compound may be pyrene, acenaphthene, fluorene, perylene, 1,2-benzanthracene or azulene. The composition may be used in xerographic and photoplastic processes.
Patent GB-1201700-A (GB)
Title: Preparation of carbon aggregate
Inventor: HILDEBRANDT RICHARD DUANE
IPC: C04B35/532
Filed: 1968-10-10
Abstract: 1,201,700. Carbon material for electrodes. KAISER ALUMINUM & CHEMICAL CORP. 10 Oct., 1968, No. 48156/68. Heading ClA. Carbon material suitable for producing carbon electrodes is made by (a) pressure crushing coarse conventional coke material at a pressure whereby the weaker particles crumble and fill spaces between the stronger particles until sufficient dove-tailing occurs that the charge bears the full pressure load without further degradation so as to obtain a reproducible particle size distribution having a specific first bulk density and (b) adding fine particle size carbon material so as to obtain the desired particle size distribution and second bulk density. The pressure used is 1000 to 20,000 p.s.i. Starting materials specified are anthracite coke and petroleum coke. When anthracite coke is used it may be calcined at 1200‹ C., and vibration compacted for one minute until the first bulk density is about 1À27 g./c.c. or calcined at 1800‹ C. and similarly compacted until the first bulk density is about 1À15 g./c.c. When petroleum coke is used it may be calcined at 1200‹ C. and vibration compacted for one minute until the first bulk density is about 1.01 g./c.c.