baber/WOPTO huggingface dataset:
Patent GB-432917-A (GB)
Title: Improvements in or relating to thermostatically operated switch gear
IPC: H01H37/40
Filed: 1934-02-08
Abstract: 432,917. Thermal switches. CHURCH, G. T., Curfew Poultry Farm, Gogmore, Chertsey, Surrey. Feb. 8, 1934, No. 4221. [Class 38 (v)] A thermal switch comprises a rod B<1> moved by a capsule B to tilt a rod D<1> about a pivot D<3> to rock a mercury switch E<3> mounted in a carrier E which has a slot (not shown), in which the rod D<1> engages. The slot may be arranged obliquely so that movement in either direction away from a normal position causes the switch to tilt in the same direction to switch on. A bracket D' to which the rod D<1> is pivoted, is adjustably mounted in a fixed bracket D<5> and may be moved relatively to the rod B<1> by means of a knob D' to adjust the operating temperature.
Patent GB-266705-A (GB)
Title: Improvements in or relating to liquid manometers
IPC: G01L7/18
Filed: 1927-02-15
Abstract: 266,705. Siemens & Halske Akt.-Ges. Feb. 25, 1926, [Convention date]. Liquid-level pressure gauges.-in apparatus in which one leg of a U-tube consists of an external tube and an inner fixed displacement member shaped so that the cross-section changes according to a definite mathematical law, the external tube is of conical shape while the displacement member is curve-shaped in longitudinal section, with a cross-section tapering towards the narrowest inlet opening of the tube. Such construction is stated to remove prejudicial influences due to deviation in width of the annular cross-section from prescribed dimensions and also those due to capillarity, liquid friction, &c. In one form, Fig. 1, the leg 1 widening conically towards the top receives a displacement body 4 of curve-shaped longitudinal cross-section which may be fixed or adjusted by a screw 2. The leg 1 is connected by a pipe 5 with the other leg 6, which widens at the top into a chamber 7 with a float 9 resting on the indicating liquid, say mercury. The float through a rack bar 10 moves indicating mechanism contained in a housing 11. The space 12 above the mercury is fluid-tight and is connected by a pipe 13 with the throat of the Venturi tube. The space 16 at the top of the leg 1 communicates by a pipe 17 with the Venturi tube. In a modified construction, the pipe 5 is dispensed with, and the displacement member is bored to provide the leg 6.
Patent GB-305679-A (GB)
Title: The manufacture of new vat dyestuffs of the benzanthrone series
IPC: C09B5/40
Filed: 1929-02-09
Abstract: 305,679. I. G. Farbenindustrie Akt.- Ges. Feb. 10, 1928, [Convention date]. Anthraquinone vat dyes are obtained by the action of an acid condensing agent on a benzanthronylaminoanthraquinone in which the benzanthronylamino group occupies the 1-position of the anthranquinone nucleus and the 2-position is free and which contains at least one aroylamino group in the anthraquinone nucleus. The products appear to contain a carbazol ring, while the aroylamino group is apparently not attacked. Chlorsulphonic acid and sulphuric acid are suitable condensing agents, and the reaction occurring even at ordinary temperature, so that a saponification of the aroylamino group is avoided. In examples, (1) 1-(Bz1-benzanthronylamino)5-benzoylaminoanthraquinone (obtained by condensing 1-amino-5-benzoylaminoanthraquinone with Bz1-brombenzanthrone) is stirred with sulphuric acid monohydrate until the dark brown solution changes to blue, the mass is then poured on to ice and the separated dyestuff filtered off ; it dyes cotton from the vat in fast yellowish-brown shades; a similar dyestuff is obtained by starting from the condensation product of 1-amino-5- benzoylaminoanthraquinone ad 6: Bz1-dibrombenzanthrone; (2) 1-(6-benzanthronylamimo)-4- benzoylaminoanthraquinone (from 1-amino-4- benzoylaminoanthraquinone and 6-chlorbenzanthrone) is treated with chlorsulphonic acid; the product dyes cotton in grey-brown shades; by starting with the condensation product from 1- amino-5-benzoylaminoanthraquinone and 6-chlorbenzanthrone. a product dyeing cotton in yellowish-brown shades is obtained. Specification 273,656 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers generally to the treatment of benzanthronylaminoanthraquinones containing at least one aroylamino group in the anthraquinone residue, and also to the use of anhydrous aluminium chloride as condensing agent. This subject-matter does not appear in the Specification as accepted.
Patent GB-1462034-A (GB)
Title: Preparation of powdered rubbers
IPC: B29B15/02
Filed: 1973-01-29
Abstract: 1462034 Production of rubber powders BP CHEMICALS INTERNATIONAL Ltd and G J HOLLIDAY (PLASTICS) Ltd 21 Jan 1974 [29 Jan 1973 15 March 1973] 4453/73 and 12404/73 Heading C3P A process for the production of a powdered rubbery material comprises feeding a rubbery material in large particulate form to an air attrition mill and subsequently treating the resultant powdered rubbery material with a dusting powder (e.g. a Zn or Ca salt of a long chain fatty acid), a dispersion of an antitack agent (e.g. an Na or K salt of a long chain fatty acid) in water being added to the rubbery material, and sufficient of the water being evaporated from a suspension of the powdered rubbery material in an air stream to enable the subsequent treatment with the dusting powder to take place without caking due to the presence of wet particles, the quantities of antitack agent and dusting powder being sufficient to give a free-flowing powdered rubbery material. The rubbery material may be a copolymer of butadiene with styrene or acrylonitrile or may be a masterbatch of a rubber in admixture with, e.g. carbon or PVC and may be cooled before being fed to the air attrition mill.
Patent GB-164803-A (GB)
Title: A method of obtaining hydrofluoric acid from the sulphonating mixtures of organic sulpho acids and calcium fluoride
IPC: C01B7/19
Filed: 1920-02-13
Abstract: The crude product resulting from the sulphonation of aromatic substances, e.g. in the preparation of benzene sulphonic acid, is worked up for the recovery of its sulphuric acid content by heating with fluorspar, whereby hydrofluoric acid is evolved and is collected in the known manner.  The aromatic sulphonic acid remains unchanged by the treatment.  Specification 2565/07 is referred to.ALSO:The crude product resulting from the sulphonation of aromatic substances for example in the preparation of benzene sulphonic acid, is worked up for the recovery of its sulphuric acid content by heating with fluorspar, whereby hydrofluoric acid is evolved and is collected in the known manner.  The aromatic sulphonic acid remains unchanged by the treatment.  Specification 2565/07 is referred to.
Patent GB-1396692-A (GB)
Title: Synchronous linear electric motor
IPC: H02K41/03
Filed: 1971-02-11
Abstract: 1396692 Linear motors UNIVERSITY COLLEGE OF NORTH WALES 11 May 1972 [11 Feb 1971] 4483/71 Heading H2A A linear electric motor comprises fixed and moving cylindrical members 1, 3, one of which (1) carries a winding 5 which produces a field, permeating the other member, in a direction perpendicular to the axes of the members, the magnetic circuit of one of the members ineluding a first, helical, rib 7 which projects towards a second rib or ribs 9 on the other member. On energization of the winding the members 1, 3 will move axially relative to each other to a position in which the points at which the first and second ribs are closest lie along the axis of the magnetic field. Rotation of the field either continuously (using a three-phase winding) or in steps, will then cause further movement. The second rib(s) 9 may be either spaced annuli or a further helix. The members comprise laminated steel or ferrite.
Patent GB-708151-A (GB)
Title: Process for the manufacture of photographic diazotype copies of improved gradation
IPC: G03C1/54
Filed: 1952-02-20
Abstract: 708,151. Photographic diazotype copies. CHEMISCHE FABRIEK L. VAN DER GRINTEN, N. V. Feb. 20, 1952 [March 20, 1951], No. 4504/52. Class 98(2) A process including the production of diapositives and kinematograph films with continuous tone gradation as well as ordinary diazotype copies comprises selectively exposing a " diazo film layer " having the character of a true layer of measurable thickness and containing a p-aminobenzene diazo compound which yields an active photochemical decomposition product capable of reacting at room temperatures with aqueous diazo compounds in accordance with a test described in the Specification, rendering the copy alkaline as with moist ammonia fumes or with a thin layer of alkaline liquid, and developing by treatment with an aqueous coupling compound. In Example 1 a cellulose acetate film is coated with a warm liquid consisting of gelatine, p-diazo-di-n-amylaniline hydrochloride, citric acid and thiourea in water, cooled, dried, exposed under a diapositive, treated with moist ammonia fumes, dipped into a water solution of phloroglucinol, resorcinol, potassium-tetraborate and thiourea, washed and dried to show a strong brown continuous tone image. In example 2 the diazo film layer is made by deacetylating the surface of cellulose acetate coated paper and applying a composition containing the zinc chloride double salt of p-diazo-di-normal-hexylamiline chloride thereto and is exposed, fumed with ammonia and then developed similarly. Example 3 describes the casting of a warm colloidal solution of the zinc chloride double salt of p-diazo-di-normal-butylaniline chloride, low acetyl cellulose acetate and alum in equal volumes of alcohol and water on to a polyvinyl acetate layer lying on baryta paper, cooling, drying, exposing, treating with an aqueous alkaline solution and then developing. In a fourth' example regenerated cellulose foil is sensitized by dipping into an aqueous solution containing the diazo compound of Example 3, exposed, fumed with ammonia and developed. All examples provide a better contrast range or gradation in the developed material than would have been obtained by development and coupling without the intermediate treatment with alkali. Other diazo compounds which may be used include those of p-amino-diethylaniline and -ethylbenzylaniline and the diazo compounds of Specification 698,027. High energy couplers as used in thin-film diazotype development are recommended.
Patent GB-736299-A (GB)
Title: An improved fuel pump system for internal combustion engines
IPC: F02M59/00
Filed: 1952-02-20
Abstract: 736,299. Fuel-injection pumps. DOXFORD & SONS, Ltd., W., PURDIE, W. H., and JACKSON, P. May 20, 1953 [Feb. 20, 1952], No. 4510/52. Class 102 (1). A fuel-injection pump for a reversible, air-less, two-stroke diesel or semi-diesel marine engine of the kind having a resiliently-loaded accumulator plunger ejecting the fuel from the pump barrel, comprises a pump plunger 50 reciprocated by an eccentric 52 keyed on an engine-driven shaft 1 and positioned and timed in relation to the engine so that it reaches the end of its pumping stroke at the same time as the piston reaches the end of its compres. sion stroke. Fuel sucked in through an inlet port 56 which coacts with a helical groove 54 on the plunger on its down. stroke, is on its upstroke partially expelled until the port 56 is covered whence the trapped fuel urges the accumulator plunger 61 upwardly against a spring 62 until a discharge port 67 is uncovered by a plunger groove 66 connected by an axial passage 65 to the pump chamber 60. The fuel is then ejected through the port 67 by the sudden downward movement of the plunger 61. The plunger 50 is rotatable by a rack and pinion 58, 59 to determine when the port 56 closes and the amount of fuel trapped in the pump chamber.
Patent GB-550686-A (GB)
Title: Control valve for differential air pressure power braking and like systems
IPC: B60T13/24
Filed: 1941-04-04
Abstract: 550,686. Valves. BENDIX AVIATION CORPORATION. April 4, 1941, No. 4520. Convention date, April 11, 1940. [Class 135] [Also in Group XXXIV] A control valve for fluid-pressure brake and like systems comprises, as applied to a vacuum brake system, manually-operated vacuum and atmosphere valves co-operating with valve seats secured to a diaphragm which is subject to the pressure in the brake cylinder or in the control pipe of a relay valve for the cylinder acting against the pressure of the vacuum source and a spring so that unseating of a valve results in a follow-up movement of the diaphragm to re-close the valve, the pressure established in the cylinder being thus dependent upon the movement of the manual control member. A casing 20 is divided by a diaphragm 28 and a wall 31 into chambers 25, 26, 27 connected at 21, 22, 23 respectively to the brake cylinder, vacuum source and atmosphere. A tubular member 34 slidable through a seal 32 in the wall 31 is secured to the diaphragm 28 and has secured within it a member 39 the ends of which form seats for resilient vacuum and atmosphere valves 49, 53. The valve 49 is urged to its seat by a spring 45 which rests on a plate 44 secured to an extension 42 of the member 34 and is lifted from its seat by a nut member 51 on a rod 33. The initial position of the valve is adjustable by the nut 51. The valve 53 is urged to its seat by a spring 54 abutting on a plate 55 fixed to the rod 33 and is lifted by a plate 57 on the rod. The valve is shown in the release condition for a brake cylinder in which the chamber on one side of the piston is permanently connected to the vacuum source, the chambers in the other side being connected to the source by passages 21, 42a, 41, chambers 26 and passages 22. The spring 64 which acts on the diaphragm is given a slight initial compression by an adjustable stop 66.
Patent GB-675241-A (GB)
Title: Improvements in and relating to apparatus for separating immiscible liquids or liquids and insoluble solids
IPC: B01D17/02
Filed: 1950-02-22
Abstract: Apparatus for separating immiscible liquids or liquids and insoluble solids by heating to reduce the viscosity of the mixture, and thus permit separation by virtue of a difference in specific gravities, comprises a vertical annular conduit, means for introducing the mixture into the upper end of it, helical heating means co-axial with and located within the conduit, means for causing an appreciable change in direction of flow of the mixture upon its emergence from the lower end of the conduit, and a chamber surrounding the lower end of the conduit and having an outlet for one or more constituents of the mixture.  As shown, impure oil from an auxiliary tank 11, Fig. 4, is fed by pipe 28 and inlet pipes 26, Fig. 1 (one not shown), to the bottom <PICT:0675241/III/1> <PICT:0675241/III/2> chamber 20 of each of two separators 10 and its change of direction in passing up a thermally-conducting tube 29, Fig. 1, causes silt and some water to be deposited in the chamber 20. From the top of the tube 29 it passes down an annular conduit formed by the tube 29 and a second thermally-conducting tube 30 traversed by a steam pipe 39 fed from a pipe 42.  The heat-treatment and the reversal of direction of the oil at the bottom of the conduit cause deposition of the remaining water at the bottom of a mddle chamber 19 to the top chamber 18 through apertures 31, which prevent eddying, in a partition 17B and then through pipes 33, (not shown), and 35 to fuel pumps 36, Fig. 4. Water may be drawn off at intervals from chambers 20 and 19 by pipes 44 and 45, Fig. 1, respectively, through self-closing valves 46 and pipe 48, an observation glass 47 being provided on pipe 48.  A perforated delivery plate (not shown), is fixed in front of the oil delivery port in the bottom chamber 20.  The outlet end 41 of the steam pipe 39, Fig. 1, is connected to a common outlet pipe 43, Fig. 4.
Patent GB-1391574-A (GB)
Title: Impact wrench with automatic shut-off
IPC: F16C11/10
Filed: 1973-01-30
Abstract: 1391574 Impact wrenches ATLAS COPCO AB 30 Jan 1973 [4 Feb 1972] 4693/73 Heading B3N An impact wrench comprises an anvil 19, a hammer 20, a fluid motor 21, a motive fluid passage 31 for the motor, a shut-off valve 38 in said fluid passage, a member 52 connected to the hammer to rotate conjointly therewith and forming a circular inner race 55 for a rolling member 56 and a pivotably mounted arm 48 carrying an outer race 57 for said rolling member, said arm being swingable into a position for initiating the shut-off valve to take up a closed position, said outer race diverging relative to said inner race in the direction of the rotary impacts so that, at its rolling movement created by the rebound motion of the hammer, said rolling member forces said arm to swing into its position for initiating said shut-off valve to take up a closed position when the rebound of the hammer from the anvil reaches a predetermined magnitude. Valve 38 is held in an open position by retainer slide 42 which is slidable by arm 48 against pressure from spring 43 as well as air pressure in chamber 44. This pressure is from passage 45 that is connected to passage 46 in motive fluid passage 31. A knife 58 biases ball 56 into the position of Fig. 3 but is pivotable away during operation by a piston 62 activated by fluid pressure. In operation a selector valve 33 is positioned for clockwise or anti-clockwise rotation. Supply valve 34 is opened and motor 52 begins to rotate and piston 62 lifts knife 58. When a joint starts to resist rotation member 52 will rebound with the hammer and ball 56 will cause arm 48 to rotate. At a predetermined torque the arm 48 will release slide 42 and air pressure in chamber 40 will move valve 38 to a closed position thus shutting off the motor. Knife 58 may be dispensed with. In an alternative embodiment there is an arrangement to inhibit the movement of the shut-off valve 38 until retainer slide 42 is in its position for engagement with the shut-off valve 38.
Patent GB-341305-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D29/42
Filed: 1930-02-12
Abstract: 341,305. Centrifugal pumps. BECK, W., 30, Rheingaustrasse, Biebrich, Wiesbaden, Germany. Feb. 12, 1930, No. 4754. Convention date, Feb. 28, 1929. [Class 110 (i).] The rotor runs within a removable casing mounted within an exterior casing. One of the side walls of the interior casing is separable from the main portion 2 and is carried by an end wall of the exterior casing which is hingedly mounted so that the interior of the pump can be readily exposed for inspection. The portion 2 of the interior casing is attached to the casing 6 on the same side as the inlet 16 and the shaft 15, and comprises a diffuser channel 4 and a guide channel 5. The cross sectional area of the channel 5 increases towards the juncture 11 with the outlet pipe 7.
Patent GB-1366671-A (GB)
Title: Animal handling equipment
IPC: A01K1/12
Filed: 1972-01-11
Abstract: 1366671 Animal handling equipment SOMERSET MILKING PARLOURS Ltd 11 Jan 1972 [16 Feb 1971] 4771/71 Heading AIM A unidirectionally rotatable turnstile 18, having a plurality of arms, is situated at the entrance to an installation such as a milking parlour and can assume non-obstructing positions such that animals pass into the installation without rotating the turnstile whilst in obsructing positions an arm blocks the entrance. As shown a turnstile has three arms and is rotated into the obstructing position by the engagement of an arm with the rump of an animal entering the stall 16' nearest the entrance. Animals within the installation cannot pass through the entrance due to the unidirectional rotation of the turnstile whilst no more animals can pass ino the installation due to the engagement of the obstructing arm with the rump of the animal in the first stall. In a modification the turnstile has only two arms and is manually rotated into the obstructing position.
Patent GB-234422-A (GB)
Title: Apparatus for recording pigeon races and the like, and set of dials therefor
IPC: G07C1/26
Filed: 1925-02-21
Abstract: 234,422. Sente, F. Feb. 21, 1925. Portable checking and recording clocks; time markings.-In apparatus more particularly for use in timing pigeon races in which the record is effected by puncturing a set of clock-driven dials, the clockwork is so modified that one of the dials is caused to rotate in a time which is less than one hour but greater than a minute. The dials a, b as illustrated are adapted to rotate in twenty-four hours and ten minutes respectively, the dial a being graduated by twenty-four radial lines and subdivided into sections representing ten minutes and the dial b has ten main divisions each representing a minute and subdivided into periods of two seconds each. Periods other than ten minutes such as five twelve, fifteen, &c. may be selected, the subdivisions of the dial a and the divisions of the dial b being functions of the corresponding period.
Patent GB-588589-A (GB)
Title: Improvements in and relating to centrifugal separators
IPC: B04B11/00
Filed: 1945-03-01
Abstract: 588,589. Centrifugal separators. HARTLEY, A. J. March 1, 1945, No. 5077. [Class 23] A centrifugal separator for separating liquids or liquids and semi-solids, discharges the heavier constituent through valves operated by a sliding member through a part which rotates with the centrifuge. The materials are introduced through a rotating pipe 20 into a chamber 16. A flange 21 on the pipe divides the chamber and radial blades prevent slip. The lighter constituent passes, as the arrows show, outwards then inwards above the flange 21 to outlets 18 and a discharge chamber 24. The heavier constituents pass inwards through passages 17 to valves 13 and outlets 15. The valve rods are carried by a member 2 mounted on bearings 3 on a non-rotating sleeve 1 which is moved axially upon a stationary part 6 by means of a lever 9. The valves may be radially arranged or of a rotary type.
Patent GB-906184-A (GB)
Title: Improvements in or relating to electric cable glands
Inventor: LAWMAN WILLIAM EDWARD
IPC: H02G3/06
Filed: 1959-02-14
Abstract: 906,184. Soldering. BRITISH ENGINES Ltd. Sept. 25, 1959 [Feb. 14, 1959], No. 5222/59. Class 83 (4). [Also in Group XXXVI] A cable gland includes a bush 10 having a lining or filling of fusible metal 15 which may be softened by heating after a cable has been passed through the bush so as to bond with the cable sheath.