baber/WOPTO huggingface dataset:
Patent GB-869070-A (GB)
Title: Improvements in braking systems
Inventor: BUTLER HENRY JAMES
IPC: B60T8/32
Filed: 1956-10-27
Abstract: 869,070. Railway vehicle brakes. DUNLOP RUBBER CO. Ltd. Oct. 21, 1957 [Oct. 27, 1956], No. 32822/56. Class 103 (1). In a braking system for railway vehicles the degree of application of the main brake is subjected to the variation in the amount of friction existing between the rail and a skid-shoe so as to prevent locking of the main brake under all load, speed and rail-wheel adhesion conditions. In the embodiment disclosed, assuming the vehicle to be travelling to the left, as shown in the drawing, when vacuum cylinder 12 is actuated to apply the vehicle brakes, the piston therein moves upwardly and piston-rod 11, bell-crank 1, rod 3, bellcrank 6 are actuated to cause roller 16 to press on arcuate surface 17 of the vertical member 18 carrying a cast-iron shoe 27 and force the latter into frictional engagement with rail 28 against the force of spring 23. This frictional engagement will cause the member 18 to pivot in a counter-clockwise direction about a pivot 20 to move the arm 30 to the left, causing the lever 31 to pivot in the same direction about its pivot 32 and pull the rod 48 to pull pincer arms 37, 38 together to press the frictionpads 43 against the opposite radial faces of the disc 35 with a force which is directly proportional to the coefficient of friction existing between the shoe 27 and the rail 28. The amount of this friction between the rail and the shoe will depend on the speed and weight of the vehicle, and the amount of verticallydownward pressure applied to the member 18 by the vacuum cylinder. This will, at the same time, be further subject to the frictional conditions existing between the shoe and the rail. If the vehicle is travelling to the right, contact of the shoe 27 with the rail 28 will rotate to the member 18 in a clockwise direction, pulling arm 30 and lever 31 to the right and causing the brake to operate in the manner disclosed above. Instead of vacuum operation, the apparatus may be adapted to operate by fluidpressure, electrical or mechanical means of known types. Specification 712,534 is . referred to.
Patent GB-1478199-A (GB)
Title: Flexible time recorder
IPC: G07C1/00
Filed: 1974-07-25
Abstract: 1478199 Flexible time recorder SIMPLEX TIME RECORDER CO 25 July 1974 [25 July 1973] 32917/74 Heading G4T A flexible time recorder indicates on a credit/ debit basis the current status of an employee on one of a plurality of re-settable pulseoperated up/down counters 14a-14c, the timing pulses, e.g. at minute intervals, being produced by a generator 30, e.g. a crystal-controlled oscillator, and reaching the counters 14a-14c under the guidance of employee-activated key-operated lock switches 16a..16c, a means 36 that produces a signal representing the set working time, and a programming means 36, 56 that prevents pulse-transmission outside pre-determined periods, the set-time signalling means 36 and the programming means 36, 56 co-operating so that in the absence of an employee his counter decrements, but only during the set time and in his presence it increments, but only during the phases of the pre-determined periods that lie outside the set-time. The generator 30 produces a pulse each minute at output 32 and one every 24 hours at 34. The 24 hour pulses are encoded by a unit 60 to produce signals at 58 representing days of the week. Based on these, unit 56 co-operates with an AND circuit 64 to ensure that minute pulses can only reach output 66 on pre-determined days. Similarly unit 36 in co-operation with an AND circuit 52 ensures that pulses can reach output 66 only during specified periods of the day, the active periods of a "day program" that is stored within unit 36, e.g. on an interchangeable circuit board, and which represents the only times of the day when time will be credited. A second "set time" program within unit 36 defines the periods of the day when work is obligatory and controls the output at 40. The pulses that appear at 66 increment or decrement the counters 14a-14c, depending on the position of the switches 16a-16c and switch 68, the latter being controlled by the " set time " program to be in position 68a during obligatory working periods, otherwise at 68b. Positions 76 of switches 16a-16c correspond to the counter not being activated by the employee. The counters 14a-14c may be roller counter mechanisms.
Patent GB-1276595-A (GB)
Title: Reverse osmosis membranes
Inventor: CREDALI LINO
IPC: B01D71/56
Filed: 1970-07-08
Abstract: 1276595 Reverse osmosis membranes CONSIGLIO NAZIONALE DELLE RICERCHE and MONTECATINI EDISON SpA 8 July 1970 [8 July 1969] 33045/70 Heading B1X [Also in Divisions B5 and C3] Reverse osmosis membranes are made from polymeric materials having repeating units of the general formula: R' and R" are trans to each other and represent the same or different atoms or groups which may be hydrogen or halogen atoms or alkyl (preferably methyl or ethyl), cycloalkyl or aryl groups, n is 0 or an integer from 1 to 8 and R is an alkyl (preferably methyl or ethyl), cycloalkyl, aryl, alkoxy, aryloxy, arylalkoxy, alkoxyaryl or halogen substituents. If n is greater than 1, the substituents R may be the same or different. The membrane may be coupled to a porous support, preferably of the same material. When used in a standard reverse osmosis cell, saline percentage rejections of over 99% may be obtained.
Patent GB-1385320-A (GB)
Title: Cholesterol assay
IPC: C12N9/04
Filed: 1972-06-19
Abstract: 1385320 Determination of cholesterol NATIONAL RESEARCH DEVELOPMENT CORP 18 Sept 1972 [22 Sept 1971 19 June 1972] 33069/74 and 33068/74 Divided out of 1385319 Heading G1B A method of assaying for cholesterol in a liquid (e.g. serum) comprises incubating the liquid with an enzyme preparation capable of oxidizing the cholesterol into #4-cholestenone and hydrogen peroxide and determining the amount of cholesterol present by measuring the amount of hydrogen peroxide or #4-cholestenone produced or the amount of oxygen absorbed in the reaction. Preferably the enzyme is obtained from a microorganism of the group Mycobacterium rhodocrous e.g. Nocardia species NCIB 10554 or NCIB 10555 wherein the enzyme preparation has a cholesterol oxidase specific activity of at least 1 unit per 5mg of protein nitrogen and a potency of at least 10<SP>-2</SP> units/ml. The amount of hydrogen peroxide may be measured fluorimetrically or by means of a chromogenic reagent, for example by means of quadrivalent titanium and xylenol oranges or by reaction of the hydrogen peroxide with 4-aminophenazone in the presence of phenol and peroxidase, the product being measured colorimetrically. Other reagents are mentioned. The amount of oxygen taken up may be measured by means of an oxygen electrode and the amount of #<SP>4</SP>-cholestenone may be determined by its carbonyl absorption or a derivative of #4-cholestenone such as its 2, 4 diphenyl hydrazone or iso nicotinic acid hydrazone is formed and is measured colorimetrically. A kit for use in assaying the amount in a liquid comprises in association: (i) an enzyme preparation capable of oxidizing cholesterol into #4-cholestenone and hydrogen peroxide preferably as defined above and (ii) at least one reagent which is capable of being used in the determination of the amount in which hydrogen peroxide or #<SP>4</SP>-cholestenone is formed. The reagent (ii) may be a reagent which takes part in a reaction by means of which hydrogen peroxide may be determined fluorimetrically or colorimetrically and the kit may comprise additionally at least one reagent capable of being used in hydrolyzing serum for serum cholesterol assays.
Patent GB-995017-A (GB)
Title: Chain door lock
IPC: E05C17/36
Filed: 1962-08-31
Abstract: 995,017. Door chains; locks; latches. PRECISION LOCK MANUFACTURING CO. Inc. Aug. 31, 1962 [Sept. 25, 1961], No. 33496/62. Heading E2A. A chain door lock 10 comprises a slide plate 12 having a slot 24 therein, a co-engaging sliding member 28 movable into and out of the slot to connect the slide member with and disconnect it from the slide-plate, a chain 32 connected at one end with the sliding member 28 and at the other end with a latch-bolt 34, a lock mechanism comprising a housing 48 having a first hole 50 adapted to receive the latch-bolt, a second hole 54 transverse to the first hole 50 containing a movable keeper 56 which is urged into engagement with the latchbolt 34 when it is in the first hole 50 by means of a spring 58, means for moving the keeper out of engagement with the latch-bolt, and a spring 52 to eject the latch-bolt 34 from the first hole 50 when the keeper 56 is moved out of engagement therewith. As shown, the keeper is controlled by a key operated tumbler lock 66   rotatable in a hole 68 and carrying a finger 76 which is engageable with the keeper 56. The arrangement allows the door to be opened from the outside when it is in the partially open position permitted by the chain 32.
Patent GB-649380-A (GB)
Title: Improvements in and relating to machines for applying icing to biscuits and the like
IPC: A21C15/00
Filed: 1948-12-30
Abstract: 649,380. Coating biscuits &c. MACFARLANE, R. F., and BAKER PERKINS, LTD. Dec. 30, 1948, No. 33541. [Class 28(i)] A sugar icing &c. coating is applied to biscuits &c. by bringing the upper surface of the latter into adhering contact with the underlap 3a of an endless travelling band 3, said underlap being supplied with a continuous layer of icing by passage of the band through a supply hopper 1. The lower ends of the front and rear walls 1a, 1b of the hopper 1 are spaced from the band 3 to provide clearances and are preferably fitted with adjustable gates 1c, 1d respectively, the gate 1c determining the thickness of the icing layer on the band, and the band is mounted between a rotatable drum 2, which may be displaceably mounted with respect to the hopper wall 1b, and an adjustable knifeedge 4 so that its underlap 3a is spaced from an inclined biscuit guide plate 9, the latter having a channel 10 or a lateral series thereof into which the biscuits are fed from a hopper or hoppers 15 and each of which is provided with a longitudinal slot 11 to receive a biscuit-raising finger 22. The arrangement is such that, in operation, biscuits will be ejected from the hoppers 15 by pusher bars 17, actuated by an eccentric 20 on a shaft 21, and fed to the channels 10, whereupon the fingers 22 will be raised indirectly by a cam 29 also on the shaft 21, to move the biscuits into contact with the icing layer on the underlap 3a, the biscuits travelling forward with the band 3 until they reach the knife-edge 4 where they will tend to be projected beyond said point against a snubbing band 31; the latter severs their adhesive connection with the icing and pushes them over the edge of an arcuate delivery slideway 34 down which they slide to a collecting conveyer 35. The conveyer 35 may be vibrated by eccentric rollers &c. 36a and an interposed vibrator plate 37 to permit the icing on the biscuits to settle smoothly, an adjustable bar 38 and spring-loaded discs 41 being provided to control the vibrations. According to a modification the icing band is displaced towards a stationary biscuit guide plate. Specification 334,577. [Class 28(i)], is referred to.
Patent GB-507145-A (GB)
Title: Improvements in or relating to the scavenging and charging of two-stroke internal combustion engines
IPC: F02B25/00
Filed: 1937-12-03
Abstract: 507,145. Two stroke engines. EHRLICH, J., and WORKS DEVELOPMENT CO., Ltd. Dec. 3, 1937, No. 33564. Convention date, July 27. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 7, 1938.] [Class 7 (ii)] In a two-stroke-cycle engine, the exhaust and scavenging-air ports 11, 12 are opened simultaneously, the scavenging air flowing into the cylinder until bottom dead-centre, when com bustible mixture formed in a carburetter 6 is forced past a valve 8 by a pump 7, the valve 8 remaining open until after the exhaust ports have closed. The scavenging air is compressed in the crank case, and in an alternative arrangement it is admitted by an overhead valve, conjointly controlled through a common leaf spring with the valve 8 so that it closes when the valve 8 opens.
Patent GB-1183297-A (GB)
Title: A Sprayable Web-Forming Composition
IPC: A01G13/00
Filed: 1968-07-15
Abstract: 1,183,297. Pesticides incorporated in polymeric webs. NATIONAL CASH REGISTER CO. 15 July, 1968 [11 Aug., 1967], No. 33568/68. Heading A5E. [Also in Divisions C3 and C4] Compositions containing active agents for spraying to form self-supporting polymer webs of randomly associated, joined monofilaments of diameter of I to 10Á comprise 0.25 to 8 weight per cent of encapsulated active ingredient and either 3 to 8 weight per cent waterinsoluble elastomer, 3 to 10 weight per cent water-insoluble resin and 60 to 95 weight per cent solvent for the resin and elastomer, or 0.2 to 5 weight per cent elastomer, 2 to 10 weight per cent resin, 10 to 40 weight per cent solvent and 40 to 85 weight per cent of propellant. Specified active ingredients include insect, shark, cat and dog repellants, bacterial spores, pesticides, rodenticides, termiticides, fungicides, bactericides, herbicides, defoliants, plant hormones and insect sex attractants. Specified elastomers are polybutadienes, polyisoprenes, nitrile and styrene/butadiene rubbers, neoprene, polybutenes and olefin/diene rubbers. Specified resins are hydrogenated rosins and esters thereof, phenolic resins, terpene resins, petroleum resins, coumarone/indene and phenol-modified coumarone/indene resins. Specified solvents and propellants are hydrocarbons, halogenated hydrocarbons and ketones. The compositions may also comprise tackifying plasticisers and fillers. Examples describe aerosol spray compositions comprising hexane, hydrogenated rosin, polyisobutylene, ethylene/propylene/1,4- hexadiene terpolymer, hydrogenated methyl abietate and vinyl chloride together with encapsulated active ingredients 1,2,4,5,6,7,8,8- octachloro-4,7-methano 3-alpha, 4,7,7-alpha tetrahydroindene (termiticide and ant killer), 2,4-dichloro- and 2,4,5-trichlorophenoxy acetic acid (defoliants), phenyl mercuric acetate (defoliant), o,o-diethyl-o (2-isopropyl-4-methyl-6- pyrimidinyl) phosphorothioate (insecticide), dodecachlorooctahydro-1, 3, 4-methano-2H- cyclobuta (c,d) pentalene (insecticide), dichlorodiphenyl trichloroethane (insecticide), N,N<SP>1</SP>- diethyl toluimide (insect repellant), α-ethylbenzyl butyrate (sex attractant for Mediterranean fruit fly), methyl eugenol (sex attractant for Oriental fruit fly), camphor (cat repellant), paradichlorobenzene (dog repellant), bone and Sassafras oils (dog repellants) and Baccillus thuringiensis (pathogenicide for European corn borer).
Patent GB-1013106-A (GB)
Title: A coupling suitable for foldable table legs
Inventor: TEBBUTT RONALD VICTOR
IPC: A47B3/08
Filed: 1962-08-31
Abstract: 1,013,106. Hinges. SCHEMA Ltd. Aug. 31, 1962, No. 33569/62. Heading E2F. [Also in Division A4] In a folding table leg construction the hinge arrangement comprises two members 1, 2 of synthetic resin such as nylon or polypropylene, the member 1 having a hook 3 which engages a shaft 4 extending from member 2 which is attached to the leg. The shaft 4 is equidistantly spaced from the upper and front surfaces of the leg, this distance being smaller than the distance from the edge 7 where the surfaces meet so that two stable equilibrium positions are provided and movement from one to the other is allowed by deformation of hook 3.
Patent GB-603471-A (GB)
Title: Improvements in or relating to the production of vinyl ethers and their homologues
Filed: 1945-12-12
Abstract: Vinyl ethers are produced by subjecting an acetal to thermal dissociation in the vapour phase in the presence of a volatilizable strong mineral acid or an adhydride thereof, stable under the reaction conditions, in the gaseous state as a catalyst. Suitable catalysts are sulphuric acid, sulphur trioxide or the hydrogen halides and they may be generated in situ, e.g. from alkyl sulphuric esters such as ethyl sulphuric acid and diethyl sulphate and preferably from di-isopropyl sulphate.  Other compounds, including the reaction products between the strong mineral acids and acetals, which yield the gaseous acid on decomposition may also be used. Nitrogen-containing bases such as ammonia, alkyl amines and pyridines may be added to the reactants or to the reaction products prior to cooling, to inhibit recombination of the products.  The inhibitors may be used in the form of salts of the nitrogen-containing bases, e.g. in the form of ammonium or pyridine salts of the acid catalyst, which in the reaction zone decompose to yield the catalyst and inhibitor. Reduced pressure or dilution by inert gases or vapours may be used and the gaseous catalysts may be employed in conjunction with known catalysts of a solid nature, such as fire clay.  In examples, diethyl acetal is converted to ethylvinyl ether and dimethyl acetal to methylvinyl ether.  The acid catalysts employed are sulphuric acid, ethyl sulphuric acid, diethyl sulphate, SO3 vapour, hydrogen chloride and di-isopropyl sulphate; and pyridine and gaseous ammonia are employed as inhibitors.  Several experiments are carried out to show the effects of heating the acetals, at different temperatures with or without the acid catalysts and with or without the inhibotors.  The catalyst is either added to the acetal feed or introduced separately into the reaction zone and tabulated results are given which show that in the conversion of diethyl acetal the di-isopropyl sulphate is the most active catalyst.  Other acetals, such as acetone acetal which is convertible to methyl-a -methyl-vinyl ether, may be used.
Patent GB-379928-A (GB)
Title: An improved hydraulic variable-speed transmission-gear
IPC: F16D31/08
Filed: 1931-12-05
Abstract: 379,928. Hydraulic transmission of power. CARTER, J., Amara, Farnborough Road, Farnborough, Hampshire. Dec. 5, 1931, No. 33734. [Class 69 (ii).] A hydraulic transmission gear comprises a number of gear pumps fed from and discharging to a central chamber maintained full and under pressure, by supplying liquid thereto from a suitable source, such as the lubricating circuit of the driving engine. The gear may be used as a dynamometer or to drive superchargers or blowers; in the latter case, its control valve is automatically moved into its neutral position to prevent breakage of the blower blades, when a backfire occurs, by means of a piston actuated by back pressure in the induction system. In the form shown in Fig. 1, the central chamber 7 is supplied by a bore in the crank shaft I, and a return flow takes place through apertures 29, 31 and a cooler. The pumps 4 are driven by pinions 3 adapted to mesh with a pinion 2, which is slidable to effect forward or reverse drive, and the pump ports are controlled by an adjustable valve 8. In a modification, liquid is supplied through a passage 25, Fig. 3, and passes off through a passage 26 having a release valve ; for use as a dynamometer, liquid passes through passages 17 to a gauge 23.
Patent GB-1418234-A (GB)
Title: Lamp capsule
IPC: F21V33/00
Filed: 1973-07-17
Abstract: 1418234 Lamp DANIEL WOODHEAD Inc 17 July 1973 [24 Oct 1972] 33869/73 Heading F4R [Also in Division H2] A neon lamp 10 having bare wires 13, 14 and a load resistor 17 is inserted into a capsule of synthetic translucent plastics 20. The bare wires 13, 14 may be terminated by U-blades (30, 31, Fig. 2, not shown). The encapsulated lamp may be used as an indicator lamp in a plug or connector (Figs. 5 and 6, not shown).
Patent GB-750937-A (GB)
Title: Improvements in or relating to means for transmitting line-signals to a moving train
IPC: B61L3/08
Filed: 1953-12-07
Abstract: 750,937. Railway track apparatus for actuating signals on trains. KOFLER, G. Dec. 7, 1953, No. 33918/53. Class 105. In track apparatus comprising a striker arm adapted when its associated track signal is at " danger," to strike a contact on a passing train to transmit thereto the condition of the signal, the arm is movable between its operative striking position and an inoperative position clear of the loading profile of the train, and reversely by electrical means coupled with the wayside signal means. The arm may be releasably coupled mechanically to the electrical means in the form of an electrical motor so that when contacted by the passing train it is released and freed to move under the impact of the contact into its inoperative positions. As shown, an electric motor 22, Fig. 5, electrically coupled to its associated signal so as to be controlled thereby in such a way as to turn e.g. in an anticlockwise direction when the signal is set to " danger " and in a clockwise direction when the signal is set to " clear," has secured on its spindle 9 a segment 11, Fig. 4, with a notch 12 in which engages a lug 6 fixed to the striker arm 4 mounted at one end so as to be rotatable against springs 8, 8<SP>1</SP> about its longitudinal axis in bearings in a housing 5 rotatably mounted on the spindle 9, the said arm rotating about the said axis when, e.g. the contact bow of a passing train contacts the opposite end of the arm. The leg 6 then being disengaged from the notch 12 to free the arm to pivot in a clockwise direction under the impact together with the housing 5 and against the action of a spring 21 until a peg 13 on the housing engages a releasable catch 19 which holds the arm in the inoperative position. The arm rotates back about its longitudinal axis under the influence of springs 8, 8<SP>1</SP>, but the leg 6 cannot enter the notch 12 until the catch 19 is released by energization of electromagnet 16 under the control of the signalman, whereupon the arm and the housing 5 return to the operative position under the action of spring 21 and the leg 6 then enters the notch 12 to lock the arm to the motor spindle 9. When the signal is set to " clear," the operating circuit for the motor 22 is completed to turn the motor in a clockwise direction to raise the arm to the inoperative position, the motor circuit being them opened by a limit switch to stop the motor while a second limit switch is closed to prepare a motor operating circuit to turn the motor in an anti-clockwise direction which circuit is closed when the signal is set to " danger," the arm then being moved into its operative position. The circuitry is described in connection with lamp signals.
Patent GB-342384-A (GB)
Title: Ear protector
IPC: A61F11/14
Filed: 1929-11-07
Abstract: 342,384. Ear coverings. KÍHL, E., 85c, Olgastrasse, Cannstatt, Germany. Nov. 7, 1929, No. 34006. [Class 63.] An ear protector comprises a leather cap o, the central portion of which is thinned down on both sides to leave a thin rawhide diaphragm m. A felt facing f is provided. Slots e facilitate the mounting of the protectors on a rubber band.