baber/WOPTO huggingface dataset:
Patent GB-1252532-A (GB)
IPC: C10G73/06
Filed: 1970-03-19
Abstract: 1,252,532. Separation of normal paraffins. TEXACO DEVELOPMENT CORP. 19 March, 1970, No. 13242/70. Headings C5E and C5W. A mixture of normal paraffins of which at least 95 wt. per cent have from 15-20 carbon atoms is obtained by:- (1) distilling a gas oil to obtain a distillate having a boiling range from substantially the initial boiling point of the gas oil and including the paraffins having carbon numbers in the desired range and lower, but  excluding hydrocarbons of the next higher carbon numbers, (2) diluting the distillate with up to 5 volumes of a solvent, (3) cooling the distillate to a temperature between - 60‹ F. and + 50‹ F. and at which the normal paraffin whose carbon number is that of the lowest in the desired range is separated as a solid, together with normal paraffins of higher carbon numbers, from a solution containing the solvent, other hydrocarbons, and normal hydrocarbons of lower carbon numbers. A gas oil 1, e.g. of initial boiling point 430‹ F., is distilled at 2 to produce a distillate 3, e.g. of end point 650‹ F., which is diluted with solvent containing streams 6 and 7 and cooled at 10 and 13. The solid separated is filtered off at 17, washed with solvent 20, repulped with solvent 33, and filtered off at 35. Solvent is stripped from the product stream 11 at 23 and recycled. The de-paraffined filtrate 25 has a lowered pour point and can be used in fuel oils or further cooled (Fig. 2, not shown) to provide a solid n-paraffin product having carbon numbers within a range lower than that of the product 40. Suitable solvents are acetone, methylethyl ketone, methyl n-propyl ketone, methylisopropyl ketone, and methylisobutyl ketone and can also contain benzene or toluene.
Patent GB-1258575-A (GB)
IPC: G09F19/18
Filed: 1968-10-03
Abstract: 1,258,575. Display devices. A. GROSS, and I. A. GROSS. 17 Sept., 1969 [3 Oct., 1968], No. 46986/68. Heading G5C. [Also in Divisions G2-G3] An optical projector includes a carrier 7 for a slide 8 of the kind disclosed in Specification 1,177,307 consisting of two or more immiscible liquids contained between transparent walls, one or both of which being flexible, the carrier 7 being rotated by a reversible variable-speed motor 9 so that different parts of slide 8 are moved through the projection beam. Carrier 7 may hold the slide loosely to permit movement as rotation proceeds, or the slide may be held fixed relative to the carrier. The projector may have an adjustable mirror in the projection beam, and may include a rear projection screen in the housing. The brightness of illumination and the speed of rotation may be varied, in one form, in synchronism with. associated sound reproduction.
Patent GB-1258974-A (GB)
IPC: G08C25/02
Filed: 1969-06-24
Abstract: 1,258,974. Controlling HVDC transmission systems. ENGLISH ELECTRIC CO. Ltd. 12 June; 1970 [24 June, 1969], No. 31799/69. Heading H2F In a telecommunication control system for a HVDC system, a first control unit 1 associated with one converter transmits a signal 3 to a second control unit 2, associated with a second converter, control unit 2 sending back a signal 4 after checking that the signal 3 is correct, signal 4 being re-checked in control unit 1 and, if correct, allows a control signal I<SP>1</SP> to be'fed to the first converter. The checking arrangements are however, overridden if the main control signal I bears a predetermined relationship to the control signal I<SP>1</SP>. The transmission links 3; 4 may be line, radio or optical. As described, the main signal I, which may be arranged to control current or power in the link, is converted to digital at 6 and fed to a coder 12 where parity bits are included before transmission to a register 15, possible errors being checked at 16 before the output of the register 15 is gated into a further register 18 and d/a converter 19. A current margin AI is subtracted at 20 to provide the inverter conduction angle control signal I<SP>11</SP>. If signal 3' is correct a further signal is sent along link 4, which, if correct, opens a gate 24 to allow the signal from 6 to pass via stages 25, 26 to line I<SP>1</SP> where it controls the conduction angle of the rectifiers. Signals I and I<SP>1</SP> are compared in comparator 28 which sets a one-stage register 30 if the main order signal I is increasing. This arrangement allows a control signal I<SP>1</SP> to be provided under these circumstances even if a fault exists in the transmission links 3, 4.
Patent GB-1259056-A (GB)
IPC: G01R33/12
Filed: 1970-05-14
Abstract: 1,259,056. Testing magnetic recording tape. MEMOREX CORP. 14 May, 1970 [25 July, 1969], No. 23405/70. Heading G5R. Tape 14 to be tested is fed, e.g. by a capstan 60, from a supply reel 22 past a visual inspection station 27 and a magnetic error-detection station 29 to a take-up reel 24, and is automatically fed back from the detection station 29 to the inspection station 27 on detection of an error, without removing tape from the take-up reel 24. This is facilitated as shown by the use of vacuum buffer columns 26, 32, in which limiting values of tape loop length are detected photo-electrically to control the tape transport in known manner during normal forward drive. The detection station 29, which is preceded by a pair of cleaning blades 41, 42, contains in succession an erase head 51, two multi-track playback heads 52, 53 which detect magnetic discontinuities as noise, a head 54 which records a digit "1" across the full width of the tape, and two multi-track playback heads 55, 56 which detect dropouts as decreases of signal below a preset level and also detect skew by comparing the signals on the two outside tracks. Indicator lamps are lit for excessive skew and for an average signal level which is too high or too low. On detection of a discontinuity or dropout, a control circuit (Fig. 8, not shown) causes the tape to be reversed through an effective distance equal to that between the relevant detector head and the inspection station 27, movement of the tape being monitored by a counter driven by a photo-electric pulsegenerator (70, Figs. 6 and 7, not shown) mounted on the shaft (62) of the capstan drive motor (63). The tape is then driven forwards again. If the error is still detected on the third pass, the tape is halted with the defective portion at the inspection station. On the take-up reel 24, the tape is packed tightly with the aid of a spring-loaded arm 82 carrying an air hose 88 to provide an air bearing between the tape and the head 81 of the arm 82.
Patent GB-1259373-A (GB)
IPC: B26D7/20
Filed: 1969-04-28
Abstract: 1,259,373. Cutting sheet material. MAATSCHAPPIJ VOOR INDUSTRIELE RESEARCH EN ONTWIKKELING N.V. 28 April, 1969 [10 May, 1968], No. 21600/69. Heading B4B.  A device for cutting sheet material comprises a flexible support belt 3 borne by two guide rollers 5a, 5b disposed on either side of a cutter 8, and at least one further roller 6a, 6b, the rollers and cutter 8 being supported by a carriage 1 which is movable longitudinally of the belt 3, defining a correspondingly movable transverse gap s in the belt; the support belt 3 runs over guide plates 4a, 4b of the carriage 1, the outer regions being backed by a collapsible support table 9 of interhinged plates 9a. Transverse movement of the cutter 8, e.g. of wire form, and longitudinal movement of the carriage 1 thus allow any required cut configuration. In their normal positions the plates 9a are supported on fingers 11, pivoted at 12 to main frame beams 2, and biased into supporting position by springs 14. As the carriage 1 advances, slides 21 thereof lift the plates 9a, from the fingers 11, which are pushed aside, and on further advance, the plates 9a pass over rotatable guide plates 16, and so below the carriage 1, the table 9 similarly reforming to the rear of the carriage 1. The support belt 3 is independently movable for material supply, and pressure belts (23), (23b), Fig. 5 (not shown), may be provided above the belt 3 on each side of the cutter 8, supported by an hydraulically adjustable frame (24).
Patent GB-1264544-A (GB)
IPC: B06B3/00
Filed: 1969-02-20
Abstract: 1,264,544. Agitating apparatus. INSTITUTE OF CHILD HEALTH. 6 Feb., 1970 [20 Feb., 1969], No. 9349/69. Heading B1C. A test tube shaker has a resilient mounting 3 for the test tubes 1 the bottoms of which are in contact with a turntable 6 having a rubber mat 7 on which are mounted rubber segments 8. In another embodiment (see Fig. 2, not shown) the test tubes are rotated within a frusto-conical bowl-shaped member which has raised segments on its inner wall and which is vertically adjustable to accommodate test tubes of different sizes. The bases of the test tubes are brought into contact with the uneven surface by centrifugal action. The uneven surface may be undulating, e.g. of sine wave form.
Patent GB-1289633-A (GB)
IPC: C08G63/85
Filed: 1970-01-21
Abstract: 1289633 Polycondensation catalysts SANDOZ Ltd 21 Jan 1970 [29 Jan 1969] 3015/70 Addition to 1236477 Heading C3R Polyesters are prepared using metallic titanium as polycondensation catalyst wherein the polyester is derived from aromatic and/or aliphatic dicarboxylic acids, e.g. iso- or terephthalic, naphthalene-2,6-dicarboxylic, diphenyldicarboxylic, adipic or sebacic acids, or lower alkyl esters thereof, and an aliphatic and/or cycloaliphatic and/or aromatic dihydric alcohol, e.g. a C 2-10  alkanediol, diethylene glycol, or 1,4-bis- (4<SP>1</SP>-#-hydroxyethoxy-phenyl)-propane. In the examples titanium catalysts having particle sizes up to 100 Á are used to prepare poly- (ethylene terephthalate).
Patent GB-1296058-A (GB)
IPC: F15C1/00
Filed: 1969-11-18
Abstract: 1296058 Gas turbine engine fuel systems BENDIX CORP 18 Nov 1969 [18 Nov 1968] 56472/69 Heading F1G [Also in Division G3] A fluid system controlling the fuel supply to a gas turbine has a bridge circuit in which when one limb is unbalanced by changes in engine speed from a predetermined value a servomotor adjusts the other limb to rebalance the bridge and simultaneously adjusts the fuel supply to correct the engine speed. Engine 112 is fed from tank 118 by gear pump 120 and line 116 via an orifice 126 controlled by a piston 98a secured to a piston 38a, movement of which varies the impedance 134 in line 144. Further impedances 96b, in a piston 38b are respectively in series with impedance 134 and a manually controllable valve 189 which is used to pre-set the engine speed. A vortex device 162 as described in Specification 1182547 generates a signal P n  proportional to engine speed and this is fed into control ports 60a, 62b of proportional amplifiers 46a, 46b, the other control ports 62a, 60b of which are respectively fed with a pressure P f  determined by the adjusted position of impedances 96b, 134, and a pressure P t  determined by the settingof valve 189 and the position of piston 38b. The power outlets of amplifiers 46a and 46b adjust the pistons 38a, 38b, 98a to control the fuel supply to maintain a pre-set engine speed.
Patent GB-1301383-A (GB)
IPC: B22D18/08
Filed: 1970-02-04
Abstract: 1301383 Pressure casting machines G O FORCESI 4 Feb 1970 [30 May 1969] 5313/70 Heading B3F [Also in Division F1] In a method for low pressure die casting each filling of the die is carried out for a substantially constant time independent of any changes in the level of molten metal in the bath. When the die has been filled, an additional pressure is automatically applied to the metal in the die. The metal is forced into the die 50 from a furnace 12 by compressed gas supplied through a conduit 11 the other end of which is connected to a vessel 9 containing oil 10. The bottom of the vessel 9 is connected to another vessel 21 via tube 20 in which is located a throttle 24. With the furnace 12 full of molten metal, and all of the oil 10 in the container 9, a valve 16 is closed. This causes valve 4 to close and valves 22 and 15 to open thus allowing the compressed gas above the oil 10 to enter the furnace 12 and some of the oil to flow to vessel 21, the throttle 24 being set so that the amount of oil flowing is proportional to the amount of metal forced from the furnace 12 into the die 50. After a given time, said time having been pre-set on a timing device, valves 15 and 22 are closed and an additional pressure applied to the furnace 12 via conduit 33 after which valve 35 is closed and valves 16 and 4 opened. An amount of compressed gas is thus brought above the oil 10 in container 9 from the gas supply 1, said amount being larger than that there formerly because of the loss of some oil to vessel 21. This larger amount of gas compensates for the reduction in the molten metal level in the furnace 12. The apparatus is now ready for another casting cycle. The timing device may be controlled by a member 61 which closes a circuit when contacted by the rising metal. A member 60 located at the top of the die cavity may control the application of additional pressure if the timer fails. When all the oil has been transferred to the vessel 21 i.e. when the furnace 12 is empty, it is forced back into the container 9 through a check valve 25 by compressed gas, and the furnace 12 refilled.
Patent GB-1305895-A (GB)
IPC: B67D7/44
Filed: 1969-02-07
Abstract: 1305895 Dispensing petrol etc.; valves GAS-O-MATIC DISTRIBUTERS Ltd 4 Feb 1970 [7 Feb 1969] 6725/69 Heading A4T [Also in Division F2] In a liquid dispensing apparatus the dispensing lever 15 is held in its discharge position by a latch 17 which is released to stop discharge by a known pre-settable timing device 21 clamped on to the discharge tube fitting 13.
Patent GB-1314537-A (GB)
Title: Manufacture of flat glass by the float process
IPC: C03B18/18
Filed: 1970-09-23
Abstract: 1314537 Float glass PILKINGTON BROS Ltd and J LAWRENSON 10 Sept 1971 [23 Sept 1970] 45363/70 Heading C1M In the float glass method of producing flat glass, the forward flow of the molten metal in the surface layer of the bath created by the movement of the glass ribbon is segregated from the return flow along the bottom of the bath. The segregation is achieved by providing the tank containing the bath with a false floor spaced from the tank floor and extending from one side wall of the tank to another. The false floor 29 may be provided by a plurality of longitudinally extending hollow carbon channel members 24 secured to the tank floor. Alternatively the false floor is provided by a plurality of longitudinally extending inverted carbon V- shaped members 36. The false floor may be provided with perforations 45 to allow limited infiltration of molten metal from the return flow to the forward flow to equalize the temperature therebetween. The false floor is spaced from the end walls of the tank to permit circulation of molten metal between forward and return flows. At the inlet end of the tank induction coils 35 are provided to assist this circulation. To prevent a return flow at the bath surface along the sides of the glass ribbon a plurality of transverse baffles 46 extending inwardly from the tank side walls is provided.
Patent GB-1318341-A (GB)
Title: Apparatus for effecting autocorrelation of an electric signal waveform
IPC: G06K9/52
Filed: 1969-06-02
Abstract: 1318341 Auto-correlation NATIONAL RESEARCH DEVELOPMENT CORP 28 Aug 1970 [2 June 1969] 27828/69 Heading G4A [Also in Division G1] Apparatus for auto-correlation of an input analogue electric signal waveform comprises a coder providing up and down incremental change signals fed to a multi-stage shift register, feeding a decoder to produce a delayed input signal, and multiplier circuit means fed with signals representing the input signal and delayed input signal. The coder includes a differential amplifier in which a previous value of the analogue input (see below) is subtracted from the current value, two comparators producing a pulse when the difference is more positive than a positive threshold ("positive increment") and more negative than a negative threshold ("negative increment") respectively. The outputs of the two comparators respectively increment and decrement a first reversible counter, the count in which is converted to analogue form to constitute the previous value of the analogue input, referred to above. The outputs of the two comparators are also entered into the shift register, each stage of which is two bits wide. The two outputs, as they emerge from the shift register, respectively increment and decrement a second reversible counter, the count in which is converted to analogue form to constitute the analogue input delayed. In one embodiment, a capacitor receives the analogue input for each "positive increment" pulse at the output of the shift register, the analogue input fed through a polarity inverting amplifier for each "negative increment" pulse at the output of the shift register, the analogue input delayed (see above) for each "positive increment" pulse at the input of the shift register, and the analogue input delayed fed through a polarity inverting amplifier for each "negative increment" pulse at the input of the shift register, thus performing the multiplication and integration. A second embodiment replaces the capacitor with a digital accumulator, and the polarity inverting amplifiers with a twocomplementer, and uses a digital version of the analogue input and of the analogue input delayed to be selected in accordance with the "positive increment" and "negative increment" pulses at the input and output of the shift register as before. Periodically, the accumulator (holding the product) is gated to a further accumulator to form the integral, which is then converted to analogue form, or alternatively the integral could be formed by analogue circuitry.
Patent GB-1321716-A (GB)
Title: Pillow
IPC: A47G9/10
Filed: 1970-06-09
Abstract: 1321716 Pillows F L A MORRIS 28 May 1971 [9 June 1970] 27721/70 Heading A4M A pillow comprises a foam rubber or foam plastics body formed in each of its top, bottom, front and rear sides with a V-section channel 2, 3, the channels 2 in the top and bottom being bounded on their longitudinal sides by upstanding ridges 4.
Patent GB-1323856-A (GB)
Title: Weighing scale with dashpot
IPC: G01G23/08
Filed: 1972-02-07
Abstract: 1323856 Dashpots HOBART MFG CO 7 Feb 1972 5614/72 Heading F2S [Also in Division G1] A variable rate dashpot for a weighing scale (see Division G1) comprises a piston 75 movable in a fluid-filled container (70) (Fig. 2, not shown), a path through which fluid is transferable from one side of the piston to the other to dampen movement of the piston, including at least one opening 105 or 106 controlled by a biased valve 110 or 115 which opens when fluid pressure on it exceeds a predetermined value, to allow the scale to reach its balance position quickly, and thereafter closes to provide greater damping for small movements. The main fluid path past the piston is formed by the clearance between the piston periphery and the container wall. The additional openings 105, 106 are through the piston 75 and are controlled by valves formed by leaf-springs 110, 115 secured to the piston at 111, 115. Valves 110 are operative for pressure in one direction, while valves 115 are operative for pressure in the opposite direction. The openings 105 may have a different total area from the openings 106. Temperature compensation. A triangular opening 85 through the cupped centre 82 of the piston 75 is controlled by a valve ring 90 having a rectangular opening 92 and rotatable about the piston centre 82. A bimetallic spiral spring 93 is connected between the ring 90 and a sleeve 95 rotatable about the piston-rod 77. A knurled knob 97 of the sleeve 93 allows manual adjustment of the ring 90 to adjust the degree of damping of the dashpot.
Patent GB-1324984-A (GB)
Title: Manifolds
IPC: F16L41/03
Filed: 1969-07-04
Abstract: 1324984 Pipe couplings SEALED MOTOR CONSTRUCTION CO Ltd 2 Oct 1970 [4 July 1969] 33857/69 Heading F2G A manifold for use in small-bore central heating systems comprises an elongated, hollow casting having main input 4 and outlet 5 ports at one end and subsidiary ports 9, 10 in walls extending between the end housing the main ports 4, 5 and the opposite end of the casting. Preferably, baffles 13 are cast within the manifold to reduce the fluid velocity and hence reduce any noise created by it, further noise reduction can be obtained by lining the inside of the manifold which is preferably of metal, with a synthetic plastics material. As shown, two compartments 7, 8 exist within the manifold and these are connected to the ports 4, 5 respectively. The fluid entering via the port 4 is distributed by the subsidiary ports in the upper chamber and the returning fluid re-enters the manifold via the subsidiary ports in the lower chamber 8 and passes out via the port 5. In a modification several such manifolds may be linked in series by means of ports made in the end wall opposite to the main ports 4, 5 and connections between adjacent manifold made. Alternatively several manifolds may be fitted together or cast as one unit in which the main inlet ports are at one end or at alternate ends of the complete structure. The subsidiary ports 9, 10 may be tapped to receive piping leading to other parts of the pipe system, and, as shown, these ports are slightly tapered.
Patent GB-1328784-A (GB)
Title: Method  for displaying images on a stationary screen which can  be viewed from inside a moving vehicle
IPC: G09F19/18
Filed: 1970-09-09
Abstract: 1328784 Optical projection apparatus D W PARRY 9 Sept 1970 [6 Oct 1969] 49051/69 Headings G2A and G2E [Also in Division G5] A method displaying images to passengers in a moving vehicle, such as an underground train, consists in providing a screen 6a or 6b along side the path of the vehicle on to which images may be thrown by projectors 7a or 7b respectively. Projectors 7a, 7b may be endless loop cine projectors or rotary magazine slide projectors.
Patent GB-1329689-A (GB)
Title: Drill
IPC: B23B51/04
Filed: 1971-07-29
Abstract: 1329689 Gun-drill DIAGRIT GRINDING CO Ltd 19 April 1972 [29 July 1971] 35584/71 Heading B3C A gun-drill comprises a tubular sector-shaped shank 1 having a tee-shaped tungsten-carbide cutting lead 2 brazed thereto, thus forming passages 4 for the coolant. Head 2 is located in slots in the shank.
Patent GB-1332644-A (GB)
Title: Device for dispensing measured quantities of fluent  materials
IPC: G01F11/24
Filed: 1971-04-19
Abstract: 1332644 Cups ENGLISH GLASS CO Ltd 19 April 1971 [9 Jan 1970] 1257/70 Heading A4A [Also in Division B8] A fluent material, e.g. liquid dispensing device for delivering medicine to a cup 20 comprises a housing 1 adapted for screw threaded attachment to the mouth of a container, and a cylindrical measuring chamber 11 mounted in the housing for rotation between a first position in which liquid can flow from the container into the chamber via an inlet aperture 13 and a second position in which liquid in the chamber can be dispensed therefrom. The positions are reached when a web 25 integral with the chamber abuts one or the other of stops 26. The cylindrical wall of the chamber is at one end received in an annular groove 16 in the housing, and is at the other end closed by an integral wall 12. A handle 15 is ribbed on one face, and the position of the web indicates the position, relative to the inlet and outlet of the housing, of the inlet aperture 13. A chamber 11 when inserted into the housing 1 is held therein by annular ribs 17 Fig.4 (not shown) which also prevent escape of liquid. Chambers having different measuring volumes may be used with the housing 1. A cup 20 for receiving the dispensed medicine is releasably attached to the housing. The web 25 and the attached cup 20 render the device particularly useful for the blind and physically disabled.