baber/WOPTO huggingface dataset:
Patent GB-1394329-A (GB)
Title: Vehicle braking systems
IPC: B60T8/36
Filed: 1973-06-12
Abstract: 1394329 Antiskid braking systems AUTOMOBILES CITROEN SA 12 June 1973 [13 June 1972] 27813/73 Heading F2F Antiskid braking apparatus comprises means for producing an electrical signal representing at each instant the difference between the speed of a wheel and the speed this wheel would have if the slip had a predetermined value and an electrically operated valve 5a or 5b responsive to the signal to reduce braking pressure, the signal being differentiated and integrated and a fraction of the differentiated signal and a fraction of the integrated signal together with the initial signal being summed to obtain an error signal which is used to control the valve to keep wheel slip below the predetermined value, the integrated signal being taken into account only when the value of this signal tends to increase the error signal. A magnetic pickup 27a... 27d arranged close to a wheel supplies pules, of which the frequency depends on wheel speed, to a frequency-voltage converter 28a...28d, the converters being connected to a comparator 29 which determines which wheel has the highest speed and applies a signal to a memory unit 31 the output of which is applied to a generator 32 which multiplies the signal by a factor between 0À7 and 0À8 and supplies a reference speed. Comparator 29 also supplies second signals representing the slowest of the front and rear wheels to comparators 33a, 33b the output of comparator 33a being supplied to generator 32 to produce a signal representing the difference between the reference speed and that of the more slowly rotating front wheel. The output of comparator 33a is connected to a differentiating circuit 34a and an integrating circuit 35a the signals multiplied by coefficients Kd and K i  being added by adder 36a to the signal from comparator 33a. An error signal E is produced at the output of adder 36a which is connected to one input of a comparator 38a having its other input connected to a sawtooth voltage generator 37 and its output connected to the input of a flip-flop 39a whose output is in turn connected to the control winding 24 of a brake pressure modulating valve 5a via an amplifier 40a so that the presence of an error signal causes the valve 5a to produce a braking pressure drop according to the amount of wheel slip. Comparator 33b is connected via a similar circuit to a valve 5b.
Patent GB-738572-A (GB)
Title: Improvements in and relating to modulators for electric oscillations
Inventor: HOLLOWAY DENNIS GODSON
IPC: H03C3/40
Filed: 1951-11-27
Abstract: 738,572. Phase modulation. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Nov. 20, 1952 [Nov. 27, 1951], No. 27827/51. Class 40 (5). In an arrangement for producing phasemodulated electric oscillations, a conventional balanced-modulator of the rectifier type is modified by the inclusion of an inductor 17 and a capacitor 19 whereby the modulator is unbalanced at the carrier frequency and provides an output comprising the carrier frequency in phase quadrature with the resultant of the two side-bands. The modulating voltage is applied between terminals 10, 11, and the carrier between terminals 25, 26, the output being connected across load 24. In similar modifications of further known balanced-modulators of the rectifier type the input and output transformers are dispensed with. Specification 731,913 is referred to.
Patent GB-1192253-A (GB)
Title: Improvements in or relating to Gear-Machining Tools.
IPC: B23F21/28
Filed: 1968-06-12
Abstract: 1,192,253. Gear shaving cutters. CARL HURTH MASCHINENUND ZAHNRADFABRIK. 12 June, 1968 [12 June, 1967], No. 27892/68. Heading B3K. A gear shaving tool 20 has the tip surface(s) 25, 25<SP>1</SP> of each tooth arranged at an angle, at least at one edge thereof to the tangent 27 to the envelope enclosing the tooth tips. Thus the cutting edge 4, Fig. 1, formed at the junction of the tooth flank 9 and the tip surface 13 can be given positive, negative or neutral rake values as desired with respect to the cutting action which arises as the tool teeth move into mesh with a work blank 2. The tip surfaces may also be inclined to provide an angle other than 90 degrees with the side walls of the shaving grooves and end faces of the tooth (Figs. 5-7, not shown). The invention is applicable both to one-piece tools and to tools built up of strips or plates.
Patent GB-304369-A (GB)
Title: Improvements in or relating to electric oscillation generators
IPC: H03B7/04
Filed: 1927-10-20
Abstract: 304,369. Smith, W. S., and McLachlan, N. W. Oct. 20, 1927. Thermionic generators of the kind comprising an oscillatory circuit associated with a negative resistance device are provided with means for taking off a substantially constant voltage from said circuit despite changes in the frequency. The negative-resistance device preferably comprises a screen-grid or a pentode valve. As shown in Fig. 10, the oscillatory circuit 5, 8 is connected in the anode circuit of a screen-grid valve 7, the screen grid 2 being kept at higher positive potential than the anode 1 so that secondary emission from the anode is attracted to the grid 2 and causes the anode-current to fall off with rise of anode-voltage over a certain limited range. Oscillations are produced in the circuit 5, 8 but their amplitude varies as the tuning of the circuit is varied. To compensate for this, the output is tapped off from a potentiometer 10 con. nected in series with a condenser 9 across the tuned circuit. The tapping may be adjusted conjointly with the tuning condenser. As shown, the output is fed through a resistance 14 to the control grid of a screened-grid amplifier 13. Residual reaction in the amplifier 13 is balanced by a neutralizing condenser 18 connecting the tuned plate coil 5<1> with a topping-point on the resistance 14. The potentiometer 10 may be replaced by, or combined with a variable series resistance in the tuned circuit 5, 8 (Fig. 8, not shown), or by a variable tap connection between the anode 1 and the coil 5 (Fig. 9, not shown).
Patent GB-1202510-A (GB)
Title: Improvements in and relating to optical arrangements
IPC: G03B19/12
Filed: 1969-06-03
Abstract: 1,202,510. 510. View-finders. RICOH K.K. June 3, 1969 [June 15, 1968], No.28003/69. Heading G2A.  A view-finder has a penta-roof reflecting mirror having a first pair of reflecting surfaces 1b and a final reflecting surface 1c, a viewing lens 3, and an indicating member 5 positioned between the viewing lens and the first pair of reflecting surfaces whereby the indicating member can be viewed through the viewing lens via the final reflecting surface. The indicating member may be directly illuminated from the exterior or a lamp may be mounted inside the penta-roof mirror, the lamp being turned on or off to indicate the existence of a predetermined condition.
Patent GB-1117085-A (GB)
Title: Double gusset bag
Inventor: MEYERHOEFER CARLECKHARDT
IPC: A47L9/14
Filed: 1965-07-02
Abstract: 1,117,085. Dust bag for vacuum cleaner. EQUITABLE PAPER BAG CO. Inc. 2 July, 1965, No. 28151/65. Heading BIT. [Also in Division B8] A disposable paper dust bag for a vacuum cleaner comprises a flat bottom 12 having an opening for the air inlet fitting, front and rear walls 14, 16 and two side walls (18), each side wall comprising four panels 41-44 connected to the front and rear walls and to each other by fold lines 51, 52, 46, 47, 48, lines 46, 47, 48 joining by and to diverging fold lines 58, 59, 61, 62 of which lines 58, 59 and 61, 62 fold in opposite directions. The arrows in Fig. 4 indicate directions in which the panels slope away from the observer, and the fold lines facilitate folding of the bag flat (Fig. 1, not shown). Further fold lines 68, 69 (70), (Figs. 2, 3, not shown) permit bottom 12 to fold over flat onto front 14. The top end of the bag is closed, the side panels folding flat with the front and rear walls which are secured together by a folded adhesive strip 30. The ends of strip 30 extend a little way beyond the bag sides and the top of the bag is folded over and stuck to rear wall 16 by adhesive on the outside of strip 30 (Fig. 9, not shown).
Patent GB-242668-A (GB)
Title: Improvements in elevators for grain or the like
IPC: B63B27/22
Filed: 1925-11-09
Abstract: 242,668. Rossien, G. Nov. 8, 1924, [Convention date]. Trains of rotary chambered drums mounted in flexible casings.-An elevator for use in unloading grain &c. from ships comprises a closed jointed casing which can be supported from a point above the hold by a wharf crane or otherwise and is sufficiently flexible to enable the feed end to be moved about the hold. Each section of the jointed casing comprises a series of cylindrical chambers 8 containing a rotary drum 21 formed with a number of semi-cylindrical chambers 22 in which rotate vanes 23 for propelling the material through the section. The jointed casing is formed by side plates 3 or 3<1> connected by transverse bolts 4, and curved plates 6, 7 held in curved grooves in the side plates. At a joint 2 between two sections of the carriage, an auxiliary curved casing 35 is provided, and the two sections are connected by members 36, 37, 38 so as to swing about the axis of the chambers 8. The drums 21 are carried by shafts 16 driven by interengaging spur wheels 32. In the case of end chambers 8 of relatively movable portions of the casing, the drums are mounted eccentrically. The relative movement of the casings is limited by stops, and there is sufficient play in between the spur wheels 32 to permit of the movement of the casings. The end-plates of the drums carry the spindles 24 of the vanes 23. Sprockets 25 on these spindles engage chains 26 engaged by fixed sprockets 27 on bushes 11 carrying the bearings of the shafts 16. The gearing 25, 26, 27 is mounted in an oil chamber formed by a cap 28 provided with baffles 29.
Patent GB-1434225-A (GB)
Title: Tricyclic phenoxy aminopropanols
IPC: C07D303/26
Filed: 1973-06-13
Abstract: 1434225 Corrosion inhibitors for engine lubricants E R SQUIBB & SONS Inc 13 June 1973 [3 July 1972] 28187/73 Heading C5F [Also in Division C2] The corrosivity of engine lubricants is inhibited by incorporation therein of a compound of Formula II or III or a salt thereof wherein X-Y-Z together with the two vicinal carbon atoms of the cycloalkyl ring form a 5- to 7-membered ring; R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP> and R<SP>7</SP> are independently H or C 1-8  alkyl; R<SP>8</SP>, R<SP>9</SP> and R<SP>10</SP> are independently H, C 1-8  alkyl, aralkyl, C 1-8  alkoxy, carboxy, monocyclic cycloalkyl, C 3-8  alkenyl, NO 2 , halogen, acyl, amino, acylamino R<SP>14</SP>O(CH 2 ) n , where R<SP>14</SP> is H, C 1-8  alkyl or aralkyl and n<SP>1</SP> is 0 or 1; X and Y are independently -CH 2 -, =N-, -O-, -S-, -NR<SP>15</SP>-, -O-CH 2 -, -S-CH 2 -, or -NR<SP>15</SP>-CH 2 - where R<SP>15</SP> is H, C 1-8  alkyl or acyl; Z is or R<SP>16</SP> and R<SP>17</SP> being H, C 1-8  alkyl, cycloalkyl, aryl, haloalkyl, amino or amino alkyl or and -X-Z-Y- can be taken together to form or the radical is a basic acyclic or heterocyclic nitrogen containing radical (defined); R<SP>11</SP> is H, C 1-8  alkyl or aralkyl; n is 0, 1 or 2 and the group Z<SP>2</SP> is -(CH 2 ) n2 -, R<SP>12</SP>-CH-, | R<SP>12</SP>-C-R<SP>13</SP>, O=C-, S=C- or R<SP>12</SP>-C=C- | R<SP>13</SP> wherein R<SP>12</SP> and R<SP>13</SP> are independently H, C 1-8  alkyl, aryl, OH, alkoxy, aryloxy or amino and n<SP>1</SP> is 1 or 2.
Patent GB-242671-A (GB)
Title: System for distributing time indications
IPC: G04C21/14
Filed: 1925-11-09
Abstract: 242,671. Franck, A., (Assignee of Franck, M.). Nov. 8, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric clocks combined with wireless apparatus, gramophones, and lamps.-In the arrangement shown in Fig. 1, the clock 1 at the transmitting station drives a plate 2, the teeth 3 of which actuate a switch located in the circuit 5 of a radio transmitter 6. Each receiving station comprises a radio receiver 7 actuating, by means of an electromagnet 8, the anchor escapement 9 of a clock 11. In the modified arrangement, Fig. 2, a gramophone record 13 at the transmitting station is controlled by a clock 14. Various successive time indications have been previously recorded on the record 13 and these are received by a microphone 15 in the circuit of the transmitter 16. The receiver 17 at each receiving station is provided with a loud-speaker 18, a switch 19 being preferably provided in the circuit 20. In a further modification, it is stated that the receiver may control a mechanism comprising windows in which the time indication, is automaticaly inscribed, this device having preferably combined therewith an arrangement of indicating lamps adapted to be lit and extinguished by the action of the receiver.
Patent GB-924606-A (GB)
Title: Process and apparatus for the treatment of organically polluted waste
Inventor: GRIFFIN JOSEPH DARIUS
IPC: C02F3/06
Filed: 1960-08-15
Abstract: 924,606. Activated sludge. H. E. GRIFFIN, and S. C. GRIFFIN. Aug. 15, 1961 [Aug. 15, 1960], No. 28215/60. Class 46. Waste is pumped by inlet 7 and clarified liquid leaves by outlet 8. Thickened sludge is removed from the bottom of the tank, aerated by aerators 17 and activated sludge flows back to tank 5 under gravity via inlet 16. These inlet cones 16 are adjusted at a short distance below the sludge/clarified water interface. In a modification of the apparatus (not shown) the tank 5 has two superimposed treatment zones.
Patent GB-671295-A (GB)
Title: Improvements in or relating to pectin penicillin compositions
IPC: A61K31/43
Filed: 1949-11-07
Abstract: A water-soluble salt of penicillin, e.g. potassium penicillin is rendered non-caking and more suitable for injection in an oily medium, by a coating of pectin obtained by forming a solution of the penicillin salt and pectin containing not more than 75 per cent of its weight of water, coprecipitating the penicillin salt and pectin by the addition of acetone, and recovering the pectin coated crystalline penicillin salt therefrom.  The amount of penicillin salt present is approximately thirty times the weight of the pectin, which comprises 0.75 to 1.50 per cent by weight of the penicillinpectin solution.  Specifications 642,385, [Group VI], and 644,081 are referred to.
Patent GB-1022076-A (GB)
Title: Improvements in or relating to pumps
IPC: F04D9/02
Filed: 1963-07-19
Abstract: 1,022,076. Priming centrifugal pumps. WESSELINGER GUSSWERKE - RHEINGUSS G.m.b.H. Heading F1C. A pump comprises a bladed rotor arranged within a first chamber in the pump casing, an inlet for entry of fluid into the first chamber, a second chamber surrounding the axis of rotation of the rotor and axially displaced from the first chamber, means for inducing turbulence into fluid passing from the first chamber into the second chamber, and a fluid outlet from the second chamber located inwardly of the periphery of the second chamber. In the pump shown in Fig. 5, the rotor 7 operates within a first chamber 51, and a second chamber 52 axially displaced from the first chamber is bounded by a fixed disc 53 and an annular web 54. When the pump is started, liquid present in the chambers 51, 52 assumes the form of a ring. During priming, air drawn in through the intake 3 mixes with the liquid in chamber 51, the mixture separating into liquid and air again in chamber 52, and the separated air moving towards the centre and then passing out of the chamber 52 to be discharged through the pump delivery port 57. The mixing of the air with the liquid in chamber 51 is promoted by turbulenceinducing means 55 comprising an annular port completely surrounding the rotor and a slightly spiral port 60. In one construction of the turbulence-inducing means, Fig. 7 (not shown), portions 71 extend over the entire thickness of the rotor while portion 72 extends only over the thickness of the back plate 8 of the rotor, the passage of fluid from chambers 51 to chamber 52 taking place through apertures 73. In another form of the turbulence-inducing means, Fig. 8 (not shown), portions 81 and 82 and apertures 83 correspond to the portions 71 and 72 and apertures 73 respectively. The annular web 54 may be shortened as shown at 56, in which case a separate air outlet 58 is provided and may be connected to the delivery port 57 through a conduit (not shown).
Patent GB-719760-A (GB)
Title: A process of spinning filaments from solutions of polyacrylonitrile or copolymers ofacrylonitrile
IPC: D01F6/18
Filed: 1952-11-14
Abstract: Polymers and copolymers of acrylonitrile are spun into fibres by a process wherein the polymeric material in a particle size of from 10 to 100m  is added slowly at a predetermined rate with kneading or stirring to a solvent, such as dimethyl formamide, butyrolactone, or formyl pyrrolidone, maintained at 0 DEG -20 DEG  C. and under a pressure which is reduced to a degree insufficient to cause the solvent to boil, e.g. 20 m.m. Hg, the stirring and kneading being continued for a total period of at least 2 hours, while maintaining the temperature and pressure, until a homogeneous dispersion is produced which is directly thereafter heated to a temperature not exceeding 100 DEG  C. to convert it into a solution, which is immediately subjected to a continuous spinning process. Specification 594,999 is referred to.
Patent GB-997065-A (GB)
Title: Hydraulically operated vehicle steering mechanisms
IPC: B62D5/083
Filed: 1963-07-22
Abstract: 997,065. Power-assisted steering mechanism. BURMAN & SONS Ltd., and W. H. BRIGGS. June 4, 1964 [July 22, 1963], No. 28851/63. Heading B7H. In a power-assisted steering mechanism controlled by a rotary valve comprising a first valve element 10 having splines 12 for connection to a driver operable shaft and a second valve element 11 connected to the input worm of the steering gear, relative rotation of the valve elements 10, 11 from a neutral position produces axial movement of the element 10 against the restoring force of a spring 17, and fluid pressure acts on the end face 39 of the element 10 to partially counteract the force of the spring 17 under conditions requiring high steering effort. Axial movement of the first valve element 10 is effected by balls 25 disposed between cam surfaces 26 in dogs 27 projecting from second element 11 and cam surfaces 24 in a collar 23 engaging lugs 22 on a second collar 21 connected to a ring 18 secured on the splines 12 by a second ring 20 which engages the collar 21 and the ring 18 by means of two unequal sets of serrations, thereby providing a vernier adjustment for the valve element. Dogs 28 on the first valve element 10 engage the dogs 27 on the second element 11 after a predetermined relative rotation to provide manual steering. An adjustable abutment 16 for the spring 17 is carried by a rod 15 fixed at its other end (not shown). In the neutral position of the valve elements 10, 11 (Fig. 2), oil from an engine driven pump flows through an annular passage 29 around the rod 15 to radial holes 30 in the element 10, thence to grooves 31, 32 and around lands 33, 34 to passages 37, 38 leading to a sump or reservoir. When the element 10 is turned, communication between the grooves 31, 32 and the passages 37, 38 is interrupted by the lands 33, 34 and the oil flows through ports 35 or 36 to one side of a piston 31. A pressure depending on the steering resistance will thereby be exerted on the piston 13 and will be transmitted through the annular passage 29 to act on the end face of the piston 39 and counteract the restoring force of the spring 17.
Patent GB-159288-A (GB)
Title: Improvements in and connected with controllers for electric motors
IPC: H01H19/56
Filed: 1919-11-20
Abstract: 159,288. Fairburn, C. E. Nov. 20, 1919. Running on high and low voltage as required.- Relates to the control of motors which are required to work at different times on circuits of different character, for example on two-voltage traction systems. The invention consists in a controller having two groups of contacts A, B, Fig. 1, and an automatic device which acts directly upon the controller in order to discriminate whether only the first group A or whether both groups successively shall come into use. In the example illustrated, which is a diagrammatic view of a series-parallel controller for direct-current motors. a normally-open switch L, responds to a series coil in the line from the trolly or other collector T, so that when the high-voltage supply is reached, the switch closes and connects the trolly to the second group of contacts B. At the same time a stop E is pulled by an electromagnet E out of the path of a projection J on the body of the controller. The connections to the fingers C are slightly modified when the low-voltage supply is taken from a track rail and the high-voltage supply from an overhead wire. By a further modification, the arrangement shown is adapted to a master controller which does not carry the motor current. Alternatively, the device may take the form of a drum made in two sections and a mechanical clutch between them which is automatically thrown out when the supply changes. The invention is applicable to alternating-current motors working on two circuits of different frequency. Specification 17995/10 is referred to.
Patent GB-1261082-A (GB)
Title: Continuous ion exchange apparatus and method of operating the same
Inventor: STEVENSON DAVID GORDON
IPC: B01J47/04
Filed: 1969-06-09
Abstract: 1,261,082. Ion exchange. PATERSON CANDY INTERNATIONAL Ltd. 8 May 1970 [9 June, 1969], No. 28992/69. Heading B1J. Resin is transferred from a regeneration vessel to a treatment vessel by generating a superatmospheric presure in a closed end of the regeneration column.
Patent GB-804116-A (GB)
Title: Liquid fuel injection nozzles for internal combustion engines
Inventor: GOLDSMITH CHARLES NORMAN
IPC: F02M61/08
Filed: 1955-10-12
Abstract: 804,116. Fuel injectors. C.A.V., Ltd. Oct. 4, 1956 [Oct. 12, 1955], No. 29038/55. Class 7(3) A fuel injector comprises a main body part 5 of which the outer end has a fuel supply pipe connection 8 and the inner end abuts against a nozzle member 11 over which is slidable a sleeve 26 which embraces the inner end of the body part 5 and abuts directly or through a washer on a shoulder in the mounting socket in an engine, the parts 5, 11 being held in tight contact by a securing means 7 holding the injector in position in its socket. The upper end of the sleeve 26 is provided with one or more resilient catches 27 engaging corresponding recesses 28 in the body part 5 and the lower end may be provided with a projection 31 engaging a locating notch 30 in the nozzle 11. Holes 29 are provided for engagement by an extractor if the sleeve should stick in position when the body part 5 is removed. The lift of the valve 16 is limited by a sleeve 20 on the spring abutment 20 engaging a boss 12 on the nozzle 11, notches 25 permitting passage of fuel to the injection orifice when the parts 20, 12, are in contact. In a modification the sleeve 26 is secured by a hair-pin clip passing through holes in the sleeve 26 and body part 5.