baber/WOPTO huggingface dataset:
Patent GB-484128-A (GB)
Title: Improvements in tensioning devices for transmission chains and the like
IPC: F16H7/08
Filed: 1936-11-30
Abstract: 484,128. Dashpots. WELLER, J. Nov. 30, 1936, Nos. 32729/36, 787/37, 21576/37, and 27519/37. [Class 108 (iii)] [Also in Group XXIV] The plunger 86 is provided with a loose ball 96 movable between a seat 100 and a seat 102 slotted at 104. For slow movements of the plunger the liquid flows past the ball and through the slot, but if the plunger is suddenly pressed into the cylinder, the ball first moves up to the seat 100 and very little resistance is encountered by the plunger, but when the ball is seated the further movement of the plunger is almost entirely prevented. The dashpot is applied in a tensioning device for transmission chains, belts &c. in which a flexible strip or slipper 18 presses resiliently against the chain &c. The dashpot allows the slipper to yield somewhat to take up irregularities in the drive, but a considerable return movement is almost entirely prevented. Specification 273,823, [Class 80 (i)], is referred to in the second Provisional Specification.
Patent GB-978458-A (GB)
Title: Waste disposal units
IPC: E03C1/266
Filed: 1963-08-19
Abstract: 978,458. Comminuting apparatus. E. G. IRWIN. Aug. 19, 1963, No. 32743/63. Heading B2A. The motor 2 of a portable waste-disposal unit, operated with a flow of water through a hopper 1 containing waste in which grinding is effected by the interaction of cutters in relative rotary motion, 'is mounted axially parallel with, and in a casing 3 alongside, the hopper and effects drive through a V-belt pulley arrangement 26 below the motor and hopper; the motor circuit includes an overload cut-out 29, and a lid switch for a hopper-lid 9 which closes the motor circuit only when the lid is closed. A cutter ring 13 having cutters at angles of 120 degrees around its periphery co-operates with a double-bladed impeller 15 having hard-tipped blades 17 secured on a shaft 16. In operation, an inlet 4 in the casing 3 is connected to a cold water tap, waste is scraped into the hopper, the lid is shut and held closed by spring pressure and the motor is started. Comminuted material passes out of the grinding zone through a slotted plate 19, into the chamber 21 and to the drain via the outlet 5.
Patent GB-481996-A (GB)
Title: Improvements in or relating to grid-controlled electron multiplier circuits
IPC: H01J43/30
Filed: 1936-11-30
Abstract: 481,996. Electron-multiplier circuits. GENERAL ELECTRIC CO., Ltd., FARREN, L. I., and GEORGE, E. P. Nov. 30, 1936, No. 32796. [Classes 39 (i) and 40 (v)] In order to reduce the effect of undesired variations in the supply voltages and other constants on the output current and the gain of a grid-controlled electron-multiplier, negative reaction is introduced. As shown in Fig. 2, a resistance R1 is inserted in series with the output resistance R2, and a connection is made from the resistance R1 through a bias battery Eg to the input or grid circuit of the multiplier. If stability is required only when the multiplier is functioning as a direct-current amplifier, the resistance R1 may be shunted by a condenser, alternating- current signals then being unaffected by the feed-back, Fig. 3 (not shown). If the feedback is to be ineffective for slow variations, series condensers are connected in the feedback path, Fig. 4 (not shown). In Fig. 5, two feed-back resistances R1, R3 are provided in series in the output circuit, the resistance R1 being shunted by a condenser C and connected to the grid circuit through a battery Eg a resistance R4 and a conductive path, so as to provide feed-back for slowly-varying signals ; whilst the resistance R3 is connected through a condenser C1 to provide feed-back for A.C. signals. The feed-back resistances may be replaced by frequency-dependent impedances. The electron-multiplier has a cylindrical focusing electrode 4 connected to the primary cathode 2 and partially enclosing the control grid 3. A screen 5 is situated in front of the output anode 6.
Patent GB-1511687-A (GB)
Title: Simplified doppler antenna system
IPC: G01S1/40
Filed: 1975-08-07
Abstract: 1511687 Radio navigation; aerials HAZELTINE CORP 7 Aug 1975 [5 Nov 1974] 32974/75 Headings H4D and H4A The antenna system as described in Specification 1,425,143 is modified for use in a Doppler coded pattern navigation system wherein the frequency in only a selected portion of the radiated region is varied, the frequency in the at least one remaining portion of the region being constant and indicative of the sense of angular displacement with respect to the selected region. In use, a receiver situated for example in one of two off-axis portions may determine its position relative to the centre selected portion of the region, and on entering the latter portion may then make fine measurement as to its position as described in the above referred to Specification. In Fig. 1, the signal from source 18 and power divider 20 is fed via phase shifters 22a to 22e to feed horns 14a to 14i, but phase shifter 22a feeds, via power divider 24a, feed horns 14a, 14b, 14c and phase shifter 22e feeds via divider 24b feed horns 14g, 14h, 14i, so that only that portion of the radiation pattern illuminated by feed horns 14c to 14g produces frequency variation across its angular extent (see also Fig. 3, not shown). In another embodiment Fig. 2, an alternative antenna unit comprises a sectorial horn antenna 28 comprising parallel plates 30 and 32, and focusing lens 34, fed via feed means 14a to 14g which may be dipoles or radiating probes. The signal from phase shifter 22d only is split in power divider 24 and fed to ports 14d to 14g, for use in, for example, a glide slope navigation system wherein the desired glide slope is relatively high or low and therefore at one end of the angular region which the antenna irradiates. Transfer switches (36a, 36b, 36c) (Fig. 5, not shown) may be included in the feed circuit at points 16a to 16g whereby the non-frequency varying signal from divider 24 may be switched to a different set of feeds and hence the selected frequency varying portion may be moved to a different angular part of the irradiated region.
Patent GB-648884-A (GB)
Title: Improvements in or relating to electronic cascade amplifiers energized by alternating current
IPC: H03F3/32
Filed: 1946-11-06
Abstract: 648,884. Valve circuits. SUMMERLIN, F. A., and SPERRY GYROSCOPE CO., Ltd. Nov. 6, 1946, No. 32987. [Class 40 (vi)] The invention relates to A.C. operated amplifiers and phase or sense sensitive demodulators or rectifiers of the type comprising successive stages each including two vacuum or gas discharge valves 1, 2 and 18, 19 having the A.C. energizing supply fed to the two anodes of a stage in phase and to the succeeding stage in phase opposition. The signal is applied in phase opposition to the control grids 5 and 6 and the resulting voltage developed across the loads 13, 14 in the anode circuits of the first stage during the first half-cycle of the supply voltage is stored in capacitor 29 connected between the anode ends of the loads and fed to the grids 22, 23 of the succeeding stage to control the anode current of that stage during the next half-cycle. The present invention provides in such a circuit additional capacitors 30, 31 connected across the whole or part of each of the anode loads 13, 14 to supply bias for the succeeding stage. The two condensers may be adjustable and preferably provide time constants shorter than that of the circuit comprising the anode loads and capacitor 29. In the amplifier shown, the signal is applied through transformer 9 though a direct connection may be preferred, the output is taken from transformer 26. Resistor 17 provides the bias for the first stage. The supply voltage is applied through transformer 16 and has a frequency of 400 c/s. If the input and supply voltages have the same frequency the circuit is phase-sensitive.
Patent GB-1281430-A (GB)
Title: Improvements in or relating to pump impeller assemblies
IPC: F04D13/02
Filed: 1970-07-08
Abstract: 1281430 Rotary shaft seals SOC INTERNATIONALE DE MECANIQUE INDUST. RIELLE 8 July 1970 [29 July 1969] 33068/70 Heading F2B In sealing means for an impeller shaft 1 comprising a rotary sealing ring 3 secured to the impeller 5 and shaft by an electrically non- conductive resilient member 4, the ring 3 is electrically connected to the shaft 1 as by a spring clip 7. A sealing ring 11 is sealed to the pump body 9 by a resilient membrane 12 and urged by a spring 14 into sealing contact with a face 6 of the ring 3. The ring 11 is slidably mounted on a metal case 13 force fitted into the body 9. The impeller 5 is connected to a metal ring 2 force-fitted on the shaft. The spring clip 7 may be in the form of a continuous or split disc, Figs. 3 and 4 (not shown).
Patent GB-1338356-A (GB)
Title: Process for the preparation of n-unsubstituted-thio-phosphoric -phosphonic acid ester amides
IPC: C07F9/24
Filed: 1972-07-14
Abstract: 1338356 Preparation of esteramides of phosphorus acids BAYER AG 14 July 1972 [15 July 1971] 33094/72 Heading C2P Compounds of Formula I where R<SP>1</SP> is C 1-6  alkyl, C 2-6  alkenyl, alkoxyalkyl, cycloalkyl, aryl or aralkyl and R<SP>1</SP> may have one or more substituents which are stable to the reaction conditions employed, R<SP>2</SP> is optionally substituted C 1-6  alkyl, Z and X are oxygen or sulphur and n is 0 or 1, are prepared by reacting a compound of Formula II with a compound of Formula III HOR<SP>2</SP> in the presence of an equivalent amount of a strong acid at -10 to +70 C. The strong acid may be hydrogen chloride, added by passing it in as a gas or by adding it dropwise in the form of a solution in the compound III, or sulphuric acid. The reaction may be carried out in the presence of an inert organic solvent, or in an excess of compound III as diluent. The compound of Formula II may be used in the form of a mixture with ammonium chloride obtained by reacting ammonia with the corresponding dichloride. In comparison examples: (1) no reaction occurs when S - methyl - thiolophosphorodiamidate is refluxed with ethanol for 24 hours; (2) when an excess of HCl is used in the reaction of O-ethylphosphorodiamidate with methanol, a mixture of O - ethyl - O - methyl - phosphoroamidate and O - ethyl - O,O - dimethyl phosphate is produced, the proportion of amide to ester being 3:1 when 2 moles of HCl are used per mole of diamide; and (3) when O-ethyl-N,N<SP>1</SP>-dimethyl-phosphorodiamidate is reacted with methanol in the presence of an equivalent amount of HCl a mixture of O-ethyl-O,N-dimethyl-phosphoroamidate and O-ethyl-O,O-dimethyl-phosphate is produced, the ester only being produced when an excess of HCl is used. The compounds of Formula I have insecticidal and acaricidal properties and may be used as the active ingredients in conventional pesticidal compositions.
Patent GB-360190-A (GB)
Title: Improvements in lamps mainly intended for use as aircraft landing lights but also applicable to head-lights for motor vehicles
IPC: B64F1/20
Filed: 1930-11-04
Abstract: 360,190. Vehicle &c. lamps. GREBEL, S., 81, Avenue des Ternes, Paris. Nov. 4, 1930, No. 33169. Convention date, Nov. 4, 1929. [Classes 75 (ii) and 75 (iv).] A non - dazzling lamp adapted for the illumination of aircraft landing places or for motor car headlights comprises a planocylindrical, spheiocvlindrical or annular half-lens, 6 disposed above the horizontal plane 8, 9 passing through the light source 3 for deflecting downwards the upwardly directed part of the beam and between this halflens and the light source one or more entire concavo-convex lenses 4, 5 the centre of the concave surface of the first lens 4 being on the source of light 3 and that of any succeeding lens 5 on the virtual image 31 of the source provided by the preceding lens, the image 311 provided by the last lens being at the centre of curvature of the inner surface of the half-lens 6. Behind the light source is disposed a spherical reflector 7 with its centre on the light source which comprises a horizontal transverse filament. The lenses are enclosed by a front glass 2. The final beam is a flat-topped one with wide horizontal divergence. The half-lens 6 may be of the Fresnel type.
Patent GB-812303-A (GB)
Title: Improvements in valve operating mechanism for internal combustion engines
IPC: F01L13/00
Filed: 1956-10-31
Abstract: 812,303. Regulating; valve gear. WALBRON, F. B. June 12, 1957 [Oct. 31, 1956], No. 33173/56. Class 7(6) Each valve 15 is operated by two cams A, B, which are independently adjusted by separate centrifugal governors to adjust the valve timing. The cam shafts A, B, are driven from the crankshaft 11 through chain gears and each pair of cams operates through tappets 16, 19 and push rods 17, 20, on a single rocker 18 actuating the valve 15. The centrifugal governors comprise a housing 29, Fig. 4, keyed to a camshaft and carrying a sprocket wheel 30 rotatable relatively thereto and driven from the crankshaft. The centrifugal weights 31 are pivoted on the housing 29 at 32 and on the sprocket wheel 30 at 33 so that outward movement of the weights against the force of the loading springs 34 rotates the cam shaft relative to the wheel 30. At a predetermined speed the first governor adjusts camshaft A to advance the opening of the valve 15 and simultaneously or at a different predetermined speed the second governor adjusts camshaft B to retard the valve closing.
Patent GB-1158018-A (GB)
Title: Printability Tester
IPC: B41F9/04
Filed: 1967-07-19
Abstract: 1,158,018. Printability - testing device. STICHTING INSTITUUT VOOR GRAFISCHE TECHNIEK TNO. 19 July, 1967 [20 July, 1966], No. 33205/67. Heading B6C. A printability testing device comprises a driven impression cylinder and an inked printing cylinder running in frictional contact, the paper to be printed passing therebetween, wherein the printing cylinder has at least one band of notches encircling its periphery. This provides a better frictional contact between the cylinders with consequently no variation in speed of rotation of the cylinders thus preventing the formation of misleading stripes on the paper. The notches 6 may be provided along the edges of the printing cylinder 5, but they must be in a region covered by the test paper; alternatively the band can be formed centrally (Fig. 3, not shown). The bands may be continuous or broken up but there must be a notch at some point on any printing line; the notches are preferably rectilinear in shape.
Patent GB-411379-A (GB)
Title: Nursing bottle nipples
IPC: A61J11/00
Filed: 1933-11-28
Abstract: 411,379. Nursing bottle nipples. SYLVAIN, P. L. G., 2911, Masson Street, Rosemount, Montreal, Canada. Nov. 28, 1933, No. 33261. [Class 125 (i).] A nursing-bottle nipple has a hollow bottleengaging portion 5, preferably recessed at 6, adapted to be sprung over the neck 8 of the bottle, a suction delivery portion 11 arranged at an angle thereto and provided with a passage 9 having its walls convergent towards an orifice at the free end thereof, the portion 11 having its exterior wall divergent outwardly for a substantial part of its length, and roughened, to prevent collapsing in use. The edge of the portion 5 carries an axiably extruding lug 14 to engage the bottle neck and a laterally extending lug 15 to form a finger hold. An axial air vent 13 is provided in an internal enlargement of the portion 5. The nipple formed thus is stated to prevent slipping from the baby's mouth, to aid in teeth cutting and hardening of the gums and to provide an abrasive surface, to keep the child's tongue clean.
Patent GB-771011-A (GB)
Title: Textile materials
IPC: D06P3/40
Filed: 1954-11-18
Abstract: Cellulose lower fatty acid ester textiles are given an affinity for acid dyestuffs by incorporating therein an epoxyamine, an aminediol in which an open carbon chain carries two hydroxyl groups or a monohydroxy alkanolamine containing two tertiary nitrogen atoms.  The additive may be admixed with the cellulose ester flake or with the cellulose ester solution from which the fibres are spun, or alternatively the cellulose ester fibres may be treated with a solution of the additive.  Specified epoxyamines are 1-amino-2 : 3-epoxypropane, 1-amino-3 : 4-epoxybutane, 1 - monoethylamino - 2 : 3 - epoxy - propane, 1 - dimethylamino - 2 : 3 - epoxypropane, 1-diethylamino-2 : 3-epoxypropane, 1-dipropylamino-2 : 3-epoxypropane, 1-diisopropylamino-2 : 3-epoxypropane, 1-dibutylamino-2 : 3-epoxypropane, 1-methylpropylamino-2 : 3-epoxypropane, 1-dimethylamino-3 : 4-epoxybutane, 1-N,N - diphenylamino - 2 : 3 - epoxypropane, 2-methyl - 5 - (epoxyethyl) - pyridine and 1 - morpholino-2 : 3-epoxypropane.  Specified aminediols are the hydrolysis products of the abovementioned epoxyamines. Specified alkanolamines are 1 : 3-bis-diethylamino-propanol-2, 1 : 3 - bis - dimethylamino - propanol 2, 1 : 3 - bis-diisopropylamino-propanol-2, 1 : 3-bis-dibutylamino-propanol-2, 1 : 3-bis-methylpropylamino - propanol - 2, 1 : 3 - bis - diphenylamino - propanol-2, 1 : 3-bis-dipropylamino-propanol-2 and dimorpholino-propanol-2.ALSO:Cellulose lower fatty acid ester textiles are given an affinity for acid dyestuffs by incorporating therein an epoxyamine, an aminediol in which an open carbon chain carries two hydroxyl groups or a monohydroxy alkanolamine containing two tertiary nitrogen atoms.  The additive may be admixed with the cellulose ester flake or with the cellulose ester solution from which the fibres are spun, or alternatively the cellulose ester fibres may be treated with a solution of the additive.  Specified epoxyamines are 1 - amino, 1 - monoethylamino-, 1 - dimethylamino-, 1 - diethylamino-, 1 - dipropylamino-, 1 - diisopropylamino-, 1-dibutylamino-, 1 -methylpropylamino-, 1 - N, N - diphenylamino-, and 1-morpholino - 2 : 3-epoxypropane,1-amino- and 1 - dimethylamino - 3 : 4 epoxybutane and 2 - methyl - 5 - (epoxyethyl) - pyridine. Specified aminediols are the hydrolysis products of the above-mentioned epoxyamines.  Specified alkaenolamines are 1 : 3 - bis - diethylamino-, 1 : 3 - bis-dimethylamino-, 1 : 3 - bis - diisopropylamino-, 1 : 3 - bis - dibutylamino-, 1 : 3-bis - methylpropylamino-, 1 : 3 - bis - diphenylamino-, 1 : 3 - bis - dipropylamino and dimorpholino - propanol - 2.
Patent GB-1521111-A (GB)
Title: Inked ribbon cartridge
IPC: B41J32/02
Filed: 1975-08-12
Abstract: 1521111 Inked ribbon cartridge GENERAL ELECTRIC CO 12 Aug 1975 [26 Aug 1974] 33515/75 Heading B8M In order to translate a ribbon 2 in a single strand across a printing head 10 of a printing device an endless inked ribbon 2 is stored in the form of upright and compressed folds 22 in a compartment I of three compartments I, II, III, defined by partition rib 11 andribs 13, of a cartridge 1 whereby when the ribbon is translated by a drive roller 5 folds from compartment I are disengaged by the partition rib 11 and stored inside the compartment II in a less compressed manner to enter the compartment III in a single strand by bending across ribs 13. The ribbon 2 is turned through 180 degrees in the form of a m÷bius loop by an inverting device 20 which can be of two forms (see Figs. 4A and 4E). The inverting device may be a wire clip bent into a configuration shown in Fig. 4. The ribbon 2 is made of a meshed material such as nylon and retains a supply of printing ink by capillary action and/or absorption. A journal or bearing 33 for the wheel 5 also serves to cause the ribbon to peel off the wheel 5 into the housing or compartment 8 for storage therein rather than wind back around the wheel to its entrance side. This is also true of journal 34 for the idler wheel 6 which is biased towards the wheel 5. Journals 33 and 34 may be moulded as part of the cartridge plastics material with the journal 34 resiliently pivoted to ensure the biasing action. The wheels 5 and 6 may include three tiered gears. The carriage 23 of the printing device carrier the printing head 10 and three fasteners which engage the sockets (not shown) in the cartridge. A drive shaft 16 on the carriage is aligned with the roller 5 via a spline arrangement (not shown). The shaft 16 is driven by a pulley 17 around which a traction cable 18 is wrapped whereby when the carriage moves the pulley rotates.
Patent GB-1330365-A (GB)
Title: Method and device for medical observation in obstetrics
IPC: A61B5/053
Filed: 1971-07-16
Abstract: 1330365 Electromedical apparatus M H PULLAK 16 July 1971 [21 July 1970] 33519/71 Heading G1N The contractions of a woman's uterus during child-birth are monitored by applying an alternating current of constant intensity to electrodes attached to the abdomen, amplifying and demodulating the signal at the abdomen, integrating and recording the resultant signal and comparing the recorded curve with a reference curve. A single pair of electrodes may be used to apply the current and collect the signal, although a pair of injection and a pair of collector electrodes may be used.
Patent GB-480394-A (GB)
Title: Improvements in or relating to relays for the differential protection of power transformers
IPC: H02H7/045
Filed: 1936-12-07
Abstract: 480,394. Protective cut-out arrangements. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Dec. 7, 1936, No. 33580. Convention date, Dec. 7, 1935. [Class 38 (v)] In order to prevent the operation of differential protective systems for two- or threewinding transformers by the momentary unbalance when switched in, and by throughfaults, the active couple of the protective relay is arranged to be little influenced by the unidirectional component of the primary current during transience, and, further, depends on the frequency and changes in sign for a frequency comprised between the normal frequency and twice this frequency, whilst the opposing couple is an increasing function of the main currents which traverse the windings of the transformer. The restraining element of the relay comprises a core 8 of irregularhexagon shape having poles 9 .. 11 co-operating with an armature 7 of star shape. The poles have windings 12 .. 14 connected respectively to be energized by the currents in the windings of the transformer, mutual interference between the windings of the element being reduced by suitably dimensioning the core. The operating element comprises a core 4 carrying twoparallel-connected fixed coils 5, 6 arranged in series with a movable coil 2 on a frame 1 in the air-gap of the core 4. The armature 7 and frame 1 are mounted on an axle 3, which also carries a damping plate 21 and a movable contact 19 co-operating with a fixed contact 18. Coils 2 and 5, 6 are connected across the secondary of a transformer 23 energized by the unbalance current, the primary of the transformer having three tappings in order to give three different percentage values of operation. The D.C. component of unbalance is byepassed by an inductance 24 of low ohmic resistance. A condenser 25 is shunted across the winding 5, 6 and is of such value that the driving couple tends to close the contacts with current at the supply-frequency but at a frequency lying between the supply-frequency and twice that frequency, it tends to open the contacts. The condenser and winding 2 are protected against transient over-voltage by neon tubes 26, 27. In the case of a two-winding transformer, Fig. 4 (not shown), one coil of the restraining element may be left unconnected or, alternatively, two coils may be connected in parallel and fed from one winding of the transformer, the other winding of which feeds the third coil. Electromagnetic switches.-The frame 1 is of moulded artificial resin (phenol formaldehyde resin).