baber/WOPTO huggingface dataset:
Patent GB-1335565-A (GB)
Title: Water-soluble thermosetting resins
IPC: D21H17/54
Filed: 1970-10-30
Abstract: 1335565 Epichlorohydrin-ammonia and epichlorohydrin-polyamine resins DOW CHEMICAL CO 30 Oct 1970 [31 Oct 1969 17 Sept 1970] 51732/70 Headings C3R and C3B [Also in Division D2] Water soluble thermosetting resins are prepared by. reacting epichlorohydrin with ammonia, an aliphatic polyamine or a mixture of two or more thereof in aqueous solution by a two-step process comprising (a) preparing a prepolymer solution by reacting 0À3 to 0À7 mole of epichlorohydrin with each NH 3  and polyamine hydrogen, the polyamine having at least 2 amine hydrogen atoms per molecule, the reaction being carried to the point at which the ionic chloride content of the solution reaches a maximum value, and (b) adding 0À5-1À7 pbw of epichlorohydrin for each pbw of prepolymer in the solution and carrying the reaction to completion preferably at a temperature of 40-100‹ C. The prepolymer solution is preferably prepared by adding the epichlorohydrin to a stirred aqueous solution containing 10- 40% wt. NH 3  and/or aliphatic polyamine, carrying out the reaction at 0-40‹ C. until the exotherm ceases, continuing the reaction without a change in temperature for 1-30 hours, then advantageously adjusting the prepolymer concentration to 20-75% wt. and continuing the reaction at 50-100‹ C. for 0À1-5 hours. The by-product glycerol dichlorohydrin is preferably removed from the final resin solution by solvent extraction or azeotropic distillation. Suitable polyamines are alkylene polyamines and polyalkylene polyamines including C 2-10  alkylene diamines such as ethylene diamine, propylene diamine, 1,4-butane diamines, diethylene triamine, N-methylene diamine, 1,6- hexane diamine and triethylene tetramine, and other polyamines such as diaminocyclohexane, 1,3 - diamino - 2 - propanol, piperazine, N- (2 - aminoethyl)piperazine and aryl - substituted aliphatic polyamines such as the reaction product of ethylenediamine with the diglycidyl ether of bis-phenol A. Many examples are given. Uses.-Wet strength paper additives.
Patent GB-1275905-A (GB)
Title: Improvements in or relating to the sampling of gaseous atmospheres
Inventor: CRITCHLEY DEREK
IPC: G01N1/24
Filed: 1968-11-01
Abstract: 1275905 Gas analysis PILKINGTON BROS Ltd, D CRITCHLEY, F DAWBER and K F GRAINGER 14 Oct 1969 [1 Nov 1968] 51863/68 Heading G1B A gas sampling probe for use in withdrawing a sample of the atmosphere existing in the headspace of a glass melting furnace, comprises a sampling tube 2 having a closed inner end which is inserted into the atmosphere to be sampled, the tube having at least one, and preferably two lateral openings 3 near the closed end for communication with the atmosphere, a steam supply line 5 extending through the tube 2 and terminating at an ejector nozzle block 6, situated in the region of the opening or openings 3, the block 6 (shown enlarged in Fig.2) being provided with ejector nozzle bores 17 parallel with the tube 2 whereby steam issuing from the bores 17 draws a sample of the atmosphere into the tube 2 by an ejector effect. The sampling tube 2 is surrounded by a cooling water jacket comprising an outer cylindrical jacket 18 closed at its end and a concentric partition 20. Water outlet and inlet pipes 23, 24 provide for the circulation of coolant within the water jacket. Small pipes (not shown) extend through the water jacket and lead to the openings 3. The ejector nozzle block 6 is provided with a cap 11 having an inner concave surface which assists in the flow of steam from the line 5 to the bores 17. The steam draws a sample of the atmosphere through the openings 3 and this passes to a conduit 25 to a gas analyser by way of a condenser. Analysis may be conducted for any gas not soluble in water, and in the described embodiment oxygen is determined and the obtained measured value is used to control the combustion in the furnace. A valve (not shown) is provided in the conduit 25 and by closing this at intervals steam is forced to issue from the openings 3 thus preventing any deposition in these openings which would affect the use of the probe. Condensation in the probe tube 2 may be prevented by mounting it in the furnace with an upward inclination of about 15 degrees to the horizontal.
Patent GB-1081152-A (GB)
Title: Change speed transmission
IPC: F16H3/089
Filed: 1965-12-08
Abstract: 1,081,152. Change-speed gear combinations. FORD MOTOR CO. Ltd. Dec. 8, 1965 [Dec. 31, 1964], No. 51956/65. Heading F2D. In a main change-speed gear for a tractor having a rear-mounted fork lift mechanism or power digger, two pairs of gears 102, 110 and 114, 118 free on a driven shaft 106 respectively mesh directly and through reversing idlers 117, 122, two pairs of gears 94, 68 and 70, 66 rotatably fast with a hollow driving shaft 82, internally toothed clutch sleeves 132, 170 splined on the shaft 106 being respectively selectively axially slidable from central, neutral positions, to clutch to the shaft 106 the gears 102, 114 for 1st Forward and 1st Reverse and the gears 110, 118 for 2nd Forward and 2nd Reverse. The driven shaft 106 is connected to a rear-wheel drive output shaft (200), (Fig. 1B, not shown), by an auxiliary direct-reduced countershaft gear comprising a gear (194) fast with the shaft 106 and a gear 196 free on the output shaft (200) respectively meshing corotating gears (98), (100) coaxial with the driving shaft 82, an internally toothed clutch sleeve (208) splined on the shaft (200) being selectively axially slidable to clutch to the shaft (200) the gear (194) for High (Auxiliary Direct) and to the gear (196) for Low. The clutch sleeves 132, 170, (208) are actuated by forks 136, 172, (216) respectively fast on shift rails 142, 180, (222). The main gear shift rails 142, 180 are shifted by a single shift lever 150, are each held by a spring-loaded detent in one of three positions, and are so interlocked by a transverse plunger device that only one of the main gear ratios may be engaged at one time. The auxiliary shift rail (222) is shifted by a further shift lever (258) and is held by a spring-loaded detent in one of two positions. The driving shaft 82 and a coaxial shaft 72, drivingly connected to a positive displacement fluid pump powering hoisting or digger fluid motors, are connectible by friction clutches (not shown) to the engine crank-shaft.
Patent GB-1260668-A (GB)
Title: Device for the examination of substances undergoing a change under the influence of heat
Inventor: GASPAR GYULA
IPC: G01N30/12
Filed: 1968-11-01
Abstract: 1,260,668. Thermal decomposition; examination of decomposition products by gas chromatography. MAGYAR TUDOMANYOS AKADEMIA KUTATASI ESZKOZOKET KIVITELEZO VALLALATA. 1 Feb., 1969, No. 51995/68. Heading B1X. A sample substance, the decomposition processes and products of which are to be examined, is placed in a holder 16 into a hole or a pyrolyser 12 and heated by means of an electric heater 20 according to a given programme, and the developed decomposition products of gaseous phase are led with the aid of carrier gas flowing through a conduit 22, through a multi-way cock 14, into a gaschromatographic detector 7. Temperature measurements are made by a sensing element 23 and, with the aid of a double thermocouple 17, changes in enthalpy are measured and recorded. By rotating the multi-way cock 14 through 90‹, a sample of the reaction products in one of its passageways can be carried, by carrier gas applied to a connecting piece 10, to a gas chromatograph apparatus through an outlet 5. A blow-off needle valve 15 allows for the leading OFF of one part or the decomposition products before entry into the gas chromatograph detector 7.
Patent GB-522076-A (GB)
Abstract: 522,076. Moulding pipes &c. DEUTSCHE EISENWERKE AKT.-GES. Feb. 11, 1939, No. 4524. Convention date, Feb. 21, 1938. [Class 87 (ii)] A mould for the manufacture of pipes or like hollow bodies from cement or other plastic material comprises an imperforate support 1 coated or lined with a layer 3 of water-absorbent material. The cement 4 may, as shown, be moulded centrifugally within a tubular mould, or it may be moulded as in pasteboard machines by wrapping about a revolving mandrel. The water-absorbent material may be chalk, gypsum, potassium carbonate or baked fragments of porcelain or clay. A thin layer of less absorbent material, such as wood ashes, may be applied between the absorbent layer and the cement to prevent undue absorption and facilitate removal of the pipe. The mould and absorbent layer are dried after use.
Patent GB-1457704-A (GB)
Title: Parachutes
IPC: B64D17/02
Filed: 1974-12-03
Abstract: 1457704 Parachutes BRUGGEMANN & BRAND KG 3 Dec 1974 [5 Dec 1973] 52298/74 Heading B7G To restrain the initial opening of a parachute canopy 1 a continuous strip 4 of material is secured to the rigging lines 3 below the hem 2 of the canopy and between each pair of rigging lines the strip is first folded in its own length to make a loop 4b which is then folded sideways as shown in Fig. 5 to be sandwiched between respective folded portions of the base of the canopy prior to packing of the parachute. Upon release of the parachute from its pack the frictional resistance offered by the folded portions 4b prevents initial shock opening of the canopy and prevents the rigging lines from becoming entangled with the canopy. In a canopy of synthetic material the strip would be made from cotton to ensure adequate frictional resistance and its circumferential length is less than that of the hem of the canopy to create a diverging- converging shape to the inflated canopy.
Patent GB-1274289-A (GB)
Title: Improved getter assembly
IPC: H01J29/94
Filed: 1969-10-27
Abstract: 1,274,289. Gettering cathode-ray tubes. UNION CARBIDE CORP. 27 Oct., 1969 [28 Oct., 1968], No. 52461/69. Heading H1D. A getter container 16 having at least one side wall 28 and a floor member 29 is supported from the wall 17 of an electron tube by a wire 19 depending from the floor member 29 and having at least two spaced portions 20, 21 which are curved to provide minimal areas of contact 35 with the tube wall. The container 16 is urged against the tube wall in the vicinity of an induction heating coil 26 by a resilient support 15 secured to an electron gun 14. The container shown has a second side wall 27 forming a circular channel. Alternatively the container may have a solid centre portion (Fig. 7, not shown) or may be a dish and may be other than circular, e.g. oval, in shape. The wire 19 may be welded directly to the floor member 29 or may have a flattened portion 36 secured to a support bar 24 to which the spring support 15 is also secured. An additional curved portion may be secured to the mid-point of the wire 19 to provide a three-point support.
Patent GB-1482997-A (GB)
Title: Display racks for greeting cards records stationery and the like
IPC: A47F7/14
Filed: 1975-10-31
Abstract: 1482997 Display racks P C COOPER Ltd 31 Oct 1975 [5 Dec 1974 21 April 1975] 52577/74 and 16397/75 Heading A4B A display rack for cards, records, stationery or the like includes a plurality of similar, interconnected units, each unit being of generally L- shaped cross-section and comprising a generally upright panel 2 and a base panel 4, the rear face 6 of the upright panel 2 having a longitudinal flange 8 with a barbed edge 10 and the free edge of the base panel 4 defining a re-entrant slot 13, the units being inter-connected by snap engagement of a barbed flange 8 of one unit in the re-entrant slot 13 of an adjacent unit. At the junction of the panels 2, 4 there is a projection 14 of arrowhead cross-section, the projection 14 being snap-fitted into a recess 22 provided in an inclined or stepped edge 20 of a support structure of the rack.
Patent GB-1314695-A (GB)
Title: Position control system
IPC: G05D3/20
Filed: 1970-11-05
Abstract: 1314695 Automatic position control INTERNATIONAL BUSINESS MACHINES CORP 5 Nov 1970 [26 Nov 1969] 52610/70 Heading G3R In a system for maintaining an electromagnetic transducer in a desired position relative to record tracks on a magnetic record medium, velocity dependent recorded signals picked up by the transducer control the transducer position and modify the gain of such control. In Fig. 2, information tracks 22-24 of a magnetic recording disc are interrupted at intervals by positioning tracks 12 which are so magnetized as to produce alternate pulses of opposite polarity in an electromagnetic transducer. When the transducer is positioned correctly e.g. at 19 to be central for track 22, it produces pulses of approximately equal amplitude but in phase quadrature from tracks 13 and 14. These signals are amplified at 1, Fig. 1, and passed through gates 3 and 4 which are controlled by clock pulses, sychronized with the track pulses, but in phase quadrature by virtue of phase shifter 7. The gate outputs are averaged by low-pass filters 5 and 6 and combined at 8 to produce a signal, representative of their sum and hence the positional error of the transducer, which is applied to correct the position of the transducer. The averaged gate outputs are also combined at 9 to produce a signal, representative of their difference and hence signal strength which is compared with a desired strength signal at 10 so that any error varies the gain of amplifier 1 to compensate for the effect of different track velocities at different distances from the centre of the disc. Switches S, are set to a position which depends on which track pulses are synchronized with the clock pulses. In a modification, variations in signal strength may be avoided by varying the recording intensity with the distance from the centre of the disc instead of employing automatic gain control. A system for automatically controlling the steering of a variable speed vehicle over a surface by a transducer co-operating with a strip on the surface, the magnetization of which decreases in the direction of deviation from course, is referred to. In this case the frequency of the signals is utilized to compensate for variations in vehicle speed. PID control is referred to.
Patent GB-1519210-A (GB)
Title: Antiarrythmic compositions containing pyrrolidinyl derivatives
IPC: C07D213/57
Filed: 1975-12-23
Abstract: 1519210 Anti-arrythmic compositions A H ROBINS CO INC 23 Dec 1975 [26 Dec 1974] 52611/75 Heading A5B [Also in Division C2] Pharmaceutical compositions having activity against cardiac arrythmia comprise a compound of formula (I): wherein R is C 1-8  alkyl, C 3-9  cycloalkyl or phenyl C 1-8  alkyl; and Y is carbamoyl, cyano or hydrogen, or a pharmaceutically acceptable salt thereof, and a pharmaceutical carrier. The compositions may be in forms for oral or injectable administration or for inhalation.
Patent GB-1272976-A (GB)
Title: Internal combustion engine ignition systems
IPC: F02P15/10
Filed: 1969-10-28
Abstract: 1,272,976. Ignition systems. GENERAL MOTORS CORP. Oct.28, 1969 [Nov. 8, 1968], No. 52709/69. Heading F1B. A capacitor discharge ignition system includes a source 10, 10a of ignition signals produced in timed relationship to the rotation of an internal combustion engine, a converter circuit responsive to each ignition signal for producing the potential which provides the charge upon the ignition capacitor 18 and a switch 22 for connecting the ignition capacitor across an ignition coil primary winding 20. A circuit is provided for producing two like-polarity output signal pulses in response to each input ignition signal comprising a direct current potential source 8, input terminals 16, 17 or the like across which the ignition signal source 10, 10a is connected, a transformer 36 having a primary winding 37 and a secondary winding 38 which are respectively connected in opposite polarity relationship across terminals 28, 5 of the output circuit a transistor 80 having a control electrode and two current carrying electrodes, the primary winding of the transformer and the current carrying electrodes of the transistor being connected in series across the direct current potential source 8, a capacitor 69, first and second resistors 67 68, an R-C charging circuit for the capacitor including at least the series combination of the first resistor 67, the capacitor 69 and the control electrode and one of the current carrying electrodes of the transistor 80 connected across the direct current potential source and a controllable switching device 90 responsive to each input signal applied across the input terminals for connecting the capacitor in a reverse polarity relationship across a control electrode and one of two current carrying electrodes of the controllable switching device 90 and for establishing a discharge circuit including the second resistor 68 and the capacitor. In a modification (not shown) the source of ignition signals comprises a magnetic pulse generator.
Patent GB-528517-A (GB)
Abstract: 528,517. Calculating-apparatus. AKTIEBOLAGET RESULT. April 28, 1939, No. 12808. Convention date, May 6, 1938. [Class 106 (i)] In a calculating machine the differential setting of the item indicators or totalizer actuating mechanism is effected by a rockable setting arm co-operating with the key levers through the intermediary of coupling members differentially arranged and pivotally mounted on the key levers and normally engages a bar associated with the setting arm. The machine shown is of the ten key type with keys arranged in two rows and pivoted on shafts 2 or 3. Each key lever 11, Figs. 1, 3 and 4, has pivoted thereto a coupling member 20 held against a stop 24 by the action of a spring 23 and arranged at an angle according to the value of the key. The upper ends of the members 20 bear against a cross bar 12 on a pivoted bail member 9 one arm 8 of which is crank-shaped and carries a pin for engagement in a slot 19 of a known form of cam setting disc 6. The key levers and members 20 act as toggle levers when rocking the member 9 and therefore less pressure is required on the key at the commencement and termination of the stroke since the spring 23 assists the latter part of the downward movement. The end of each key lever is formed with a tongue 27 to prevent overthrow of the cross bar 12 which on reaching the bottom of the slot 28 serves as a key stop.
Patent GB-1428600-A (GB)
Title: Ethyl 2-acetoacetyl-aminothioazolyl-4-acetate and a process for  the preparation thereof
IPC: A01N43/52
Filed: 1974-12-09
Abstract: 1428600 Plant growth regulant LONZA Ltd 9 Dec 1974 [11 Dec 1973] 53079/74 Heading C1B [Also in Division C2] Examples describe the use of the novel compound ethyl-[2-acetoacetylaminothiazolyl- (4)]-acetate and for comparison purposes, indolyl acetic acid, as plant growth regulants.
Patent GB-1172387-A (GB)
Title: Logical Circuit with Field Effect Transistors
IPC: H03K19/0944
Filed: 1966-11-30
Abstract: 1,172,387. Field-effect transistor logic circuits. THOMSON C.S.F. 30 Nov., 1966 [3 Dec., 1965], No. 53713/66. Heading H3T. [Also in Division G4] A logic circuit includes an MOS field effect transistor, the gate of which receives signals for blocking or unblocking the transistor, a capacitor C 1  connected between the gate and source of the transistor, and an output capacitance C 2  connected between the drain and the source. The circuit shown in Fig. 2 is an INVERTER using an N channel depletion type MOST. With an input of 0 volts, the MOST is conductive, and a pulse + V volts from generator 50 passes through capacitor C 2 , diode D 1  and the MOST, charging the capacitor C 2 , and the output at G 2  becomes -V volts. The charge on capacitor C 2  is cleared by a subsequent pulse + V volts from generator 70. With an input -V volts, the MOST is blocked, and the output remains at 0 volts since the pulses from generator 50 are not conducted through capacitor C 2 . The circuit of Fig. 2 forms the basic unit for a NOR gate (Fig. 6, not shown), in which a plurality of such MOSTs and associated input circuits are employed with all the drains connected to the cathode of diode D 1 ; an OR gate, in which the NOR gate (of Fig. 6) is followed by the inverter of Fig. 2 (Fig. 7, not shown), or in which each input to the NOR gate (of Fig. 6) is preceded by an INVERTER as in Fig. 2 (Fig. 8, not shown); and a NOT-AND gate (Fig. 9) in which a plurality of MOSTs and their associated input circuits are connected with the source-drain paths in series. In an alternative INVERTER embodiment, Fig. 4, an N channel Enhancement type MOST used is rendered non-conductive by a 0 volt input signal and a +V volt pulse from generator 90 causes capacitor C 2  to charge to give a +V volt output. This charge is cleared by a subsequent -V volt pulse from generator 91 (point B being normally at +V volts). With an input of +V volts, the MOST is unblocked and conducts the pulse from generator 90, occurring simultaneously with a -V volt pulse from generator 92 (point D being normally at + V volts), so that capacitor C 2  remains discharged, and the output is 0 volts. In a transmission gate (Fig. 10, not shown) capacitor C 2  is connected in series between the drain of an N channel Enhancement MOST and output G 2 , and two generators supply opposite polarity pulses to the output side of capacitor C 2  through suitably poled diodes, one generator charging capacitor C 2  when the MOST is conductive, and the other generator subsequently clearing the charge. A diode is connected between the drain and source (which is earthed) of the MOST to clamp the voltage on capacitor C 2  when the MOST is blocked. The same function may be performed by a further MOST having its source-drain path in parallel with that of the first MOST and its gate connected to a fixed potential (Fig. 12, not shown). Such transmission gates may be used to form a shift register (Fig. 13, not shown, see Division G4).
Patent GB-1349632-A (GB)
Title: Hand held magnetic reader
IPC: G06K7/08
Filed: 1972-11-21
Abstract: 1349632 Magnetic head; card reader SINGER CO 21 Nov 1972 [16 Dec 1971] 53777/72 Headings G5R and G4M A hand-held magnetic reader includes a housing 10 containing an amplifier and a magnetic transducer 18 comprising a cylindrical capsule 32 of magnetic material with one conical end having an opening through which extends the working end of a magnetic core 20, tapered at an angle of approximately 70 degrees from its longitudinal axis, a centre-tapped winding 22 on the core 20, a terminal board 36 of insulating material carrying electrical terminals for the centre tap 24 and the ends of the winding 22 and an earth terminal, and a coating of electrically conductive material on the exterior of the capsule 32, on the portion of the core 20 outside the capsule apart from the air gap, and on the outer surface of the terminal board 36 apart from the winding terminals. The housing 10 carries a sighting ridge 14 and a signal light (46), Figs. 4 and 5 (not shown).
Patent GB-540316-A (GB)
Abstract: 540,316. Calculating-apparatus. BALL, W., KEEN, G. P., and BRITISH ADDING & CAL. CULATING MACHINES, Ltd. April 29, 1939, No. 7761/40. Divided out of 540,283. [Class 106 (i) ] In a machine in which each key in a column or group of keys is depressed against the action of spring means, means are provided for simultaneously adjusting the spring means acting on all the keys in a 'column or group. In the form shown in Fig. 2 applied to a multiple bank machine of the type described in Specification 540,283 each key 25 is provided with a spring 137 and co-operates with a notched detent bar 128. When a key is depressed the corresponding detent bar is reciprocated against the action of its spring 131 and holds the key in depressed position. The springs 131 in all the columns of the keys are attached by arms 132 pivotally mounted on a rod 133 secured to an adjusting lever 255 that co-operates with a notched plate 258 and is settable to one of a number of positions to regulate the spring action. As shown in Fig. 3, applied to a ten key machine the individual key springs 167 are supported on forked plates 168 which straddle cam bars 170 operatively connected to an adjusting lever 178. Specifications 263,505, 288,672, [both in Class 106 (i)], 343,448, 343,473, 343,474, 343,475, 343,476, 352,958, 540,315 and 540,320 also are referred to.