baber/WOPTO huggingface dataset:
Patent GB-1215848-A (GB)
Title: Improvements in or relating to voltage limiting circuits
Inventor: MOSES ADRIAN J
IPC: H03G11/00
Filed: 1968-11-19
Abstract: 1,215,848. Limiter circuits. HONEYWELL Inc. 19 Nov., 1968, No. 54853/68. Heading H3T. The voltage amplitude of an output signal at 22 is limited to the breakdown voltage of a Zener diode 20 connected between the bases of opposite conductivity type transistors 14, 16. A voltage, of either polarity, equal to this breakdown voltage creates a conduction path through the forward biased junctions of the transistors and the Zener diode. The collector/emitter commoned connections of the two transistors could be reversed as a symmetry does exist. In Fig. 2 (not shown) the Zener diode is replaced by a reverse biased diode.
Patent GB-1354331-A (GB)
Title: Device for transporting paper particularly for photographic  printing
IPC: G03B27/58
Filed: 1971-11-26
Abstract: 1354331 Transport mechanism for a contact printer SODER SARL 26 Nov 1971 [17 Dec 1970] 55047/71 Heading G2A A transport mechanism for a contact or projection printer comprises a drive roller 7 which advances a given length of a web of photographic paper over a table 3 after a period of stopping, the drive roller 7 having a pinion in mesh, by means of gears 10 including a unidirectionally rotatable wheel 11, with a toothed sector 12 having a return spring 15, the rotation of the roller 7 being effected by a cam 14 acting on a roller 13 fixed to the sector, the cam being mounted on a shaft 16 rotated by a motor 19 supplied with current for the time necessary for the shaft to complete one revolution to advance the web by the given length. To advance a length of paper a solenoid 31 is momentarily energized, moving a lever 29 and withdrawing a finger 28 from a notch in a disc 27 mounted on the shaft 16. The lever also actuates a micro-switch, closing a circuit to the motor 19 which then rotates shaft 16 via a screw 18 and gear 17. As the shaft rotates, the cam 14 mounted on the shaft contacts the roller 13, moving the sector 12 anti-clockwise and driving roller 7, via gears 10, 11 to advance the paper. During the latter part of rotation of the shaft the sector returns to its initial position shown under the influence of the spring 15, roller 7 remaining stationary due to wheel 11. At the end of one revolution of the shaft the finger 28 re-engages the notch, opening the circuit to motor 19 and holding the shaft in a fixed position. To vary the length of paper advanced the position of sector 12 may be adjusted to alter the distance between cam 14 and roller 13. As the paper is advanced the table 3 is lowered by a lever 25 and rod 26 controlled by a cam 24 mounted on shaft 16.
Patent GB-1224409-A (GB)
Title: Improvements in or relating to flow rate gauges
IPC: G01F1/00
Filed: 1969-11-12
Abstract: 1,224,409. Measuring fluid-flow. PLASTIC PRODUCTS Ltd. Nov.12, 1969 [Nov. 15, 1968], No.55301/69. Heading G1R. In a rate of flow gauge, such as for use with a milking machine liquid flows upwards from an inlet 3 to an outlet 4 and due to a restriction 27 a pressure differential is created between lower end spaces 13, 14 and an upper end space 29 of a bypass 25 and, as a result of such differential pressure, liquid will be drawn from a pool 12 up the by-pass 15 and thus give an indication of the liquid flow-rate through the gauge, the level 30 being seen through a transparent part 7 and read against indicia on the part 7. The gauge may be held horizontal for cleaning, the rush of cleaning fluid supplied through the inlet 3 pushing a baffle 9 and tube 10 towards the outlet 4.
Patent GB-1247168-A (GB)
Title: Manufacture and use of polymerisation catalysts for polymerizing cyclic ethers
Inventor: OSGAN MASEH
IPC: C08G65/26
Filed: 1968-11-21
Abstract: 1,247,168. Polymerisation catalysts. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 21 Nov., 1968 [21 Nov., 1967], No. 55381/68. Heading B1E. In an improved catalyst manufacture, a trivalent metal compound of the formula: is reacted with a compound of divalent metal Y-O-M-Z, wherein M' is a trivalent metal, M. is adivalent metal, Z is OR 3 ) or an acyloxy radical, one of the radicals X and Y is R 4 , the other being an acyl radical, R, to R 4  radicals being hydrocarbon monovalent radicals, and the resulting catalyst is treated with a primary alcohol containing at least two carbon atoms, in an amount of at least 0.01 mole per gm. atom of trivalent metal present in the product, and an alcohol selected from methanol and tertiary alcohols. The treatment with the primary alcohol may be preceded by a thermal treatment (150-300C). The metals specified are A1 and Zn, used in the Examples as the alcoholate and carboxylate respectively.
Patent GB-1315688-A (GB)
Title: Electrical starter for an internal combustion engine
IPC: F02N15/06
Filed: 1970-11-23
Abstract: 1315688 Electric starters for internalcombustion engines NIPPONDENSO KK 23 Nov 1970 [22 Nov 1969] 55540/70 Heading F1K An electric starter for an internal-combustion engine comprises a starter pinion 7a rotatably and axially movably mounted on the drive shaft 5 of a starter motor 3 and a solenoid 2 arranged on the motor, the arrangement being such that when the solenoid is energised its armature 11 moves the pinion axially towards the engine toothed wheel rim 14 and when the armature stroke is completed the motor is switched on, a conical meshing spring (not shown) being arranged between the armature and the pinion to permit the armature to complete its engaging stroke even when the starter pinion fails to mesh with the engine toothed wheel rim. The meshing spring is contained within a frontal recess of the armature.
Patent GB-1156839-A (GB)
Title: Printer Speed Limiting Device.
IPC: G06K15/08
Filed: 1966-12-13
Abstract: 1,156,839. Selective signalling. INTERNATIONAL BUSINESS MACHINES CORP. 13 Dec., 1966 [23 Dec., 1965], No. 55782/66. Heading G4H. [Also in Divisions G3, H1 and H3] Two systems are described for limiting the average paper-feed rate in a line printer. In the first the average speed of the paper feed roller 148, Fig. 8, is compared with a reference speed obtained from a motor M by two cams 142a, 142b which are so arranged that if the average speed of the roller 148 is at its nominal value then two cams both rotate with little relative movement and with the projections out of registration. If however, the average speed of the roller rises, cam 142b gains relative to cam 142a and eventually the projections come into registration, as shown, and contacts 140a, 140b open to interrupt the drive to the roller. In the second system, each pulse " carr. go ", Fig. 9, that should normally cause the paper to be advanced by one line, causes an increment of charge to be applied to a capacitor C1, having a leakage path via a transistor T3 to earth. If the average frequency of the " carr. go " pulses rises too high an emitter follower T4 conducts and produces an output pulse " gate print " which inhibits the application of the " carr. go " pulse to the paper feed drive.
Patent GB-1392727-A (GB)
Title: Automatic door-closing device
IPC: E05F3/10
Filed: 1972-12-07
Abstract: 1392727 Spring door closers DORMABAUBESCHLAG GmbH & CO KG 7 Dec 1972 [10 Dec 1971] 56578/72 Heading E2M [Also in Division F2] A spring door closer has a shaft 11, to be coupled to a door, which interacts by way of cam plate 17 with a spring 31 applying a closing force, and drives a piston 33 of a hydraulic damper to cause flow of fluid from chamber 40, as the door closes, through varying throttling means 44, 49 according to the position of the door, a relatively weak throttling action (through means 49) being provided in the region between a closed position on a normal open position of the door, in which region the surface of the cam 17 has a constant rise causing a constant displacement of the piston for unit rotation of the shaft 11, and a relatively strong throttling action (through means 44) being provided in the region of the normal open position, in which region the cam surface has a greater rise so that unit rotation of the shaft 11 causes a displacement of the piston at least 1.3 times the said constant displacement. Thus a greater amount of fluid must be throttled from the chamber through means 44 for a given rotation of the door in the region of the open position than during subsequent closing, when a less amount is throttled through means 49, movement of the piston 33 having uncovered part 48. Thus closing of the door from, for example 90‹ to 70‹, when roller 28 is engaging cam portion 21 is slower than at lesser or greater angles. Specifications 1259030 and 1392489 are referred to.
Patent GB-1447478-A (GB)
Title: Scaffolding and like constructions
IPC: E02B17/00
Filed: 1972-12-09
Abstract: 1447478 Clamps, scaffolding KWIKFORM Ltd 19 Oct 1973 [9 Dec 1972] 56950/72 Headings E1S, E2A and E2B A clamp for securing a walk-way to a large pipe comprises a beam for extending across the pipe and having pivoted feet mounted beneath it for resting on the pipe, and a tension means extending around the pipe between the ends of the beam for holding it in position. In the form shown in Fig. 1, the beam 12 which supports gang-planks 17 and hand-rails 13, 15, has feet 16 pivoted to depending legs 14, a screw-operated tension band 18 being attached at each end. As shown, tension is applied only by screws 23, 24 at the ends of the band, but this may be interrupted by additional screw tensioners (Fig. 3, not shown). In the form shown in Fig. 4, the top beam 42 has vertical end pieces 48 which support walks 62 and in which a lower beam 50, which is adjustable to accommodate different pipes, slides under the tension of chain tensioners 58, 59. Both beams carry hinged feet 46, 56.
Patent GB-1417177-A (GB)
Title: Dried coffee extracts and manufacture thereof
IPC: A23F5/38
Filed: 1972-12-11
Abstract: 1417177 Coffee GENERAL FOODS CORP 11 Dec 1972 [17 Dec 1971 14 Aug 1972] 57169/72 Heading A2B Instant coffee comprises a spray-dried coffee extract and a freeze-dried coffee extract blended together and matched in particle size and density, so that the blend does not separate when subjected to vibration such as would be encountered when transported. The spray-dried extract is produced by agglomerating spray-dried particles in point-to-point contact, and has a moisture content of 3.5- 5%. The freeze-dried extract has a moisture content of 1-3%, and the moisture content of the blend as packaged does not exceed 4.5%. The freeze-dried extract has a density of 0.18-0.35 gm/cc and the density of the spray-dried extract is within 25% of this. The strength of the spray-dried agglomerate is such that not more than 20% of fines capable of passing through a U.S. standard 40 mesh screen are generated in packaging. The freeze-dried extract is made from a quality coffee blend high in arabica beans (Milds) e.g. Colombian Medellius, to which flavour enhancers, e.g. mercaptans or diacetyes, may be added. The spray-dried extract may be made from low quality coffee, e.g. Robusta beans, and is ground to particles of between 15 and 200 microns prior to agglomeration. Instead of using different coffee blends to make the spray- and freezedried extracts, the freeze-dried extract may be made from one part of a liquid extract, and the spray-dried extract from the remaining part of the same liquid. Agglomeration of the spray dried particles is by means of steam, hot water spray, or hot coffee extract. An after drier may be used to reduce the moisture content of the agglomerate to below 5%. The density of the freeze-dried extract is adjusted by varying the solids content of the liquid extract, or by a foaming technique. Particle size distribution is adjusted by screen classification so that the major part of the blended mixture consists of particles of between 12 and 40 mesh. Before blending the dried extracts coffee oil may be added to the freeze-dried extract. The colour of the dried extracts may be adjusted by varying the freezing rate, or the degree of roasting. The final blend may include from 5-60% of freezedried extract, depending on the amount of flavour enhancers added. Fines produced in the initial screening of the dried extracts prior to blending may be recycled to the agglomerating apparatus. The blended product is placed in a hermetically sealed package containing less than 4% oxygen. The colours of the spray- and freeze-dried extracts may differ from one another in the final blend. Details of manufacturing conditions, and colour testing procedures are given in the Specification, particularly in the Examples.
Patent GB-1165928-A (GB)
Title: Method and Circuit Arrangement concerned with Changing a Frequency of a Resonant Circuit
IPC: H03J3/18
Filed: 1966-12-22
Abstract: 1,165,928. Frequency modulation. TELEFONAKTIEBOLAGET L. M. ERICSSON. 22 Dec., 1966 [22 Dec., 1965], No. 57572/66. Heading H3R. The frequency of a resonant circuit C, L is changed by connecting thereto a capacitor AC by means of a switch e.g. transistor T. To ensure that at the connection, or disconnection, of capacitor #C the charge on that capacitor changes steadily, thus preventing abrupt transients, switch T is, at connection or disconnection, alternately closed and opened at a frequency large compared with the resonant frequency, the proportion of the open-close cycle for which the switch is closed during connection, or open during disconnection, increasing through successive cycles until the switch becomes permanently closed, or open, respectively. For connection of capacitor #C, a voltage Uin is applied at 1, 2 and upon the gradually increasing voltage U 0  across capacitor CR is superimposed an alternating voltage U, the peaks of the resulting voltage U 1  thus causing conduction of transistor T. The times in each cycle for which the peaks of voltage U 1  exceed the switch-on voltage for transistor T increase as voltage Uo increases, until voltage Uo is large enough for transistor T to be maintained conductive. Similar conditions are provided for disconnection as capacitor CR discharges on the removal of voltage Vin.
Patent GB-1175119-A (GB)
Title: Electric Indicator Systems
IPC: G01R31/36
Filed: 1967-12-21
Abstract: 1,175,119. Battery testing. GENERAL MOTORS CORP. Dec.21, 1967 [Jan.3, 1967], No.58089/67. Heading G1U. An indicator system providing output readings representing conditions in a vehicle battery supply circuit incorporates a meter 18 with shunt and series resistors 14, 24 respectively so connected with the battery and its external load 28 as to measure current when the load is connected and voltage under no load conditions. A further shunt comprising a negative coefficient thermistor 16 is arranged to respond to the battery temperature and is so selected in conjunction with the other component values in the indicator system, that the meter readings will be compensated to eliminate variations in the indication due to voltage changes resulting solely from variations in ambient temperature at the battery.
Patent GB-1271003-A (GB)
Title: Fluid control taps
IPC: G05G1/10
Filed: 1969-12-01
Abstract: 1,271,003. Valves. CAROMA SALES PTY. Ltd. 1 Dec., 1969 [2 Dec., 1968], No. 58570/69. Heading F2V.  A tap comprises a spindle 9 screw-threadably engaging a nut 8, fixed to a housing 1, and carrying a seal 19 engageable with a seat 3 by rotation of a knob 11 which is prevented from moving axially with respect to the housing 1 by a flange 10 on the nut 8. The knob engages the spindle 9 by splines 23.
Patent GB-1373302-A (GB)
Title: Process for the preparation of polychlorcyclopentane and hexa chlorcyclopentadiene
IPC: C07C17/10
Filed: 1971-12-17
Abstract: 1373302 Polychlorocyclopentane; hexachlorocyclopentadiene FARBWERKE HOECHST AG 17 Dec 1971 [19 Dec 1970] 58701/71 Heading C2C The invention comprises a process for the preparation of a polychlorocyclopentane having an average chlorine content of 5À0-7À0 chlorine atoms per molecule by reacting a polychlorocyclopentane having an average content of 4 chlorine atoms per molecule with gaseous chlorine at a temperature of 40-170 C./0-20 atmos. in the presence of electromagnetic radiation of wavelength less than 1  at a dose rate of from 10<SP>2</SP>- 10<SP>7</SP> rad per hour. The product of this reaction may be converted into hexachlorocyclopentadiene by reaction in the vapour phase (e.g. at 450 C.) with chlorine. Specified radiations are from X-ray apparatus, accelerators or in nuclear reactors or radiation from radionuclides, e.g. Co-60 and Cs-137. In the illustrated process the starting "tetrahydrocyclopentane" is introduced into outer reaction vessel 2 via conduit 3 where it is contacted with Cl 2  from ring 5 supplied by conduit 7. The product from this vessel is pumped into inner vessel 1 via conduit 8 and reacts with further Cl 2  supplied via conduit 12 and ring 6. Radiation source 10 is located in the centre of the reaction vessel. Product is removed from vessel 1 via conduit 4 and unreacted chlorine from vessel 1 together with some formed HCl is cycled back to vessel 2 via conduit 7. The reaction may also be carried out continuously.
Patent GB-587115-A (GB)
Abstract: 587,115. Electric cut-outs. CARLISLE ELECTRICAL MANUFACTURING CO., Ltd., CARLISLE, H. V., and BURNS, J. Feb. 15, 1944, No. 2810. [Class 38 (i)] A detachable fuse carrier, 12, 18, supporting a fusible conductor, e.g., 20, Fig. 10, is locked in a receptacle 15, 28 respectively by rocking it about a virtual axis within the contour of each of the receptacle contacts 16, 29, which are engaged by the arcuate ends of the carrier contacts 13, 22, 23. Accidental detachment of the carrier from the receptacle is prevented by the engagement of the pins 14, 26 with the bayonet slots 17, 27 respectively. In one modification, a spring 11, Fig. 6, urges the pins into the bayonet slots.
Patent GB-587430-A (GB)
Abstract: 587,430. Sights for guns on aircraft. BOULTON PAUL AIRCRAFT, Ltd., and SAYERS, W. H. Dec. 4, 1936, No. 33258. [Class 92 (ii)] The speed of a target aircraft relatively to the guncarrying aircraft is measured by a sighting member movable in azimuth to follow the target and by a second member which normally follows the first, but which can be rendered fixed in relation to the gun-carrying aircraft for a definite time interval, the separation of the members being a measure of the relative speed. Fig. 2 shows in plan an aircraft turret for a pair of guns 8 trained about an axis O and elevated about a trunnion axis A-A for following the target by a sight 9a. The sight correction device for relative speed is mounted on a turntable 9 maintained fixed in space during rotary movement of the turret by a compensating chain gear 13, 12 so that a cross-bar 4, connecting bars 1, 2 sliding in bearings 3, remains parallel to one's own direction of flight at velocity V0. The relative-speed measuring means comprises an arm 6, Figs. 4, 5, directed parallel to the guns by a pivotal connection to a bracket 16 fixed to the turret and pivoted to a block 5 sliding on the bar 4. A second slotted arm 17 is connected to a block 18 slidable on the bar 4, and on the common pivotal axis of the arms 6, 17 is arranged a clutch device 24 operated by a handle 27. A member 20 movable with arm 6 is normally clutched to a member 19 on the arm 17, but the arm 17 can for a definite time interval be declutched from the arm 6 and clutched to the turnable frame 9 by operating handle 27 to raise the member 24. The separation between the blocks 5, 18 is then a measure of the relative speed. In a modification, Figs. 18, 19, the first member is constituted by the rotary gun turret itself and comprises a slotted bar 70, the second member 47 being pivoted to rotate in azimuth in the gun turret and being normally clutched thereto at x, but can for a definite time interval be declutched therefrom and clutched at y to a rotary member z maintained in constant angular relation with the gun carrying aircraft by gearing. The displacement of a pin 51 in the slotted bar 70 is then a measure of the desired relative velocity VR. Fig. 18 shows the application of the present invention to the apparatus for determining the total deflection d to be applied to the gun-sight as described with reference to Fig. 7 of Specification 587,431, the ''own speed" crank 69 being driven in unison with the member z and the bar 76 introducing the correction for "time lag" as described in Specification 587,429. A pressbutton apparatus for operating the clutch x, y and ensuring its engagement at y for a definite time interval is described with reference to Fig. 12 (not shown).
Patent GB-1338039-A (GB)
Title: Vinyl chloride polymers and preparation thereof
IPC: C08F8/20
Filed: 1971-12-20
Abstract: 1338039 Chlorinated PVC AIR PRODUCTS & CHEMICALS Inc 20 Dec 1971 [28 Dec 1970] 59148/71 Heading C3P Chlorinated P.V.C. obtained from a homopolymer or a copolymer with 2-15% of ethylene or propylene and optionally up to 10% of other monomer is produced by chlorination in solution in chloroform to result in a product having a chlorine content of at least 67% by wt., a HDT of at least 115‹ C., a heat stability of at least 90 min. at 400‹ F. and a notched Izod impact strength of at least 0À65 ft.lb./inch. When a copolymer is chlorinated it should have an intrinsic viscosity above 0À5 dl./g. Visible or U.V. light is used in the chlorination. In one example a vinyl chloride/propylene/tetrafluoroethylene terpolymer is used.
Patent GB-1243079-A (GB)
Title: Improvements in or relating to dispensing apparatus
Inventor: POITRAS EDWARD JOSEPH
IPC: B01F11/00
Filed: 1968-12-16
Abstract: 1,243,079. Syringes. E. J. POITRAS. Dec.16, 1968, No.59699/68. Heading F1R. [Also in Division B1]  A device for separately storing two liquids, and then mixing and dispensing them as an activated mixture, e.g. a liquid polymer base material and a catalyst, comprises outer and inner containers 12, 13 for the liquids, inner container 13 being axially movable relative to outer container 12 and having a piston 35 which, on outward movement of inner container 13, pressurizes the liquid therein to displace a sealing plug 22 downwardly to uncover ports 21 and discharge the inner container liquid into the outer container. An apertured piston 23 mounted on inner container 13 mixes the liquids during the outward stroke. As shown, inner container 13 is moved by a handle 43, movement of piston 35 being prevented by a piston rod 34 connected to outer container 12 by rod assembly 32. When the liquids have been mixed, and piston 23 is at the upper end of container 12, assembly 32 is pivoted into a retracted position, also used for shipping, and handle 43 is rotated to rotate inner container 13 relative to piston 23, rotation of the piston being prevented by a pin 45 engaging one of piston apertures 24. The threaded connection between container 13 and piston 23, on rotation, causes sealing disc 25 on container 13 to close apertures 24. The inner container and piston 23 are then moved downwardly to dispense the mixed liquids through opened nozzle 16, the lid 17 of the outer container having been pierced at recess 46 to provide a vent. In Fig. 5 (not shown), disc 25 is freely supported for axial movement by pins depending from piston 23, and automatically closes apertures 24 during the dispensing stroke. In Fig. 6 (not shown), piston-rod 34 and rod assembly 32 are replaced by a wire connecting piston 35 to the bottom of outer container 12 and passing through plug 22, nozzle 16 being located off-centre.