baber/WOPTO huggingface dataset:
Patent GB-1510602-A (GB)
Title: Electro-acoustic transducer
IPC: H04R17/00
Filed: 1976-06-18
Abstract: 1510602 Piezoelectric transducers TOKYO SHIBAURA ELECTRIC CO Ltd 18 June 1976 [24 June 1975] 25297/76 Heading H4J An electro-acoustic transducer comprises a housing 12 having a permanently polarized piezoelectric element 2 (e.g. of LiNbO 3  or LiTaO 3 ) which releases oxygen when heated to 200‹C. and more and an unpolarized element 5 having no piezoelectric action (e.g. of LiNbO 3  or LiTaO 3 ) which also releases oxygen when heated to 200‹C. and more. The construction minimizes degradation of the piezoelectric element 2 through loss of oxygen due, for example, to oxidation of the inner wall of housing 12. The amounts of oxygen given off from the piezoelectric element 2 and the unpolarized element 5 depends on the volume of elements 2 and 5. Thus if the two elements are both of the same material (e.g. LiNbO 3 ) and the volumetric ratio of the piezoelectric element 2 to the unpolarized element 5 is 1:9, then 10% of the amount of oxygen necessary for the regain of the pressure equilibrium is evolved from piezoelectric element 2 and the remainder is evolved from element 5. Thus a relatively small amount is released from element 2, thereby substantially reducing its degradation with time. The element 5 is preferably made from electrically insulating material and has a lead 6 extending through it to a palladium element 4. Lead 6 is connected to the centre wire 11 of coaxial cable 9. The palladium electrode 4 assists in containing oxygen in the piezoelectric element 2. The device may be a transmitter or receiver of vibrations from the wall 2 of housing 12.
Patent GB-439320-A (GB)
Title: Improvements in or relating to electric motor controllers
IPC: H02P1/54
Filed: 1934-09-03
Abstract: 439,320. Master control of D.C. motors; actuating controllers. WEST & CO., Ltd., A., and PADDOCK, W. J., Lewes Road, Brighton, Sussex. Sept. 3, 1934, No. 25299. [Class 38 (iii)] Armature and field control ; rectilinear sliders; combination of resistances.-A motor is accelerated by removing. series accelerating resistance from circuit, and further accelerated by connecting the accelerating resistance in shunt with the motor series field winding and again removing it from circuit, an additional shunting resistance being provided which is out of circuit during the first accelerating stage, but is connected in series with the accelerating resistance when the latter is in shunt with the field, so that when the accelerating resistance is removed from the shunting circuit, the additional shunting resistance remains in shunt with the field. Upon operation of sliding contact members 11 from the end A to the end B of their respective resistance 3 and 4, the resistance is gradually removed from the armature circuits of the respective motors 1 and 2. Switches 18, 19 are then closed and the switch 20 opened so that the motor armatures are connected in parallel each with its own accelerating resistance in series. The contacts 11 are then returned to the ends A thereby again removing the series resistances in steps. Switches 21-24 are then closed so that the series fields 5, 6 of the parallel-connected motors are shunted each by its own resistance 3, 4, additional shunting resistances 7, 8 being included in the respective shunting circuits. Upon returning the contacts 11 to the ends B of the resistances, the resistances 3, 4 in the shunting circuits are again removed leaving only the resistances 7, 8 in circuit. The contacts 11 are operated by an electric or pneumatic motor under the control of a master controller which also controls the motor circuit connections. When an electric pilot motor is provided, a main motor current relay is effective to short-circuit the armature of the pilot motor when the current attains a predetermined value, thereby arresting the movement of the contacts 11. The pilot motor may be arranged to return the contacts to the starting position when the master controller is moved to the " off " position.
Patent GB-1100527-A (GB)
Title: Ash-receptacle
IPC: A24F19/08
Filed: 1966-06-07
Abstract: 1,100,527. Smokers' ashtrays. GEBR. HAPPICH G.m.b.H. 7 June, 1966 [26 Nov., 1965], No. 25320/66. Heading A2M. An ashtray assembly 1 for use in motor vehicles comprises an ash receptacle 3 movable into and out of a housing or cover 2 in the manner of a drawer, the housing or cover having flanges, 6, 7, depending from its top wall and on which are mounted strips of plastics 8, 9 on which channel section slides 12, 13 on the receptacle are slidably fitted. The flanges may be formed from edge portions of a plate 5 secured to the housing top wall. A channel 14 in the plate 5 may house a device for normally retaining the receptacle in the housing.
Patent GB-462727-A (GB)
Title: Improved warming and drying appliance for use with stoves
IPC: F24C15/12
Filed: 1935-09-12
Abstract: 462,727. Drying - attachments for stoves. ARCHER, N. M. Sept. 12, 1935, No. 25321. [Class 126] A framework having an open front and bottom is provided with clamping means for securing it above the plate-rack 13 of a stove, so that by hanging over it cloths to be dried an open-bottomed enclosure is formed for plates or articles of food supported by the rack. The framework shown comprises a rectangular top frame 18 with bars 31, legs 22 with bifurcated ends engaging the platerack frame and provided with clamping screws 27, and bracing bars 28, 29, 30.
Patent GB-1059862-A (GB)
Title: Ester-oxazoline compositions and their method of preparation
IPC: C08G63/685
Filed: 1964-06-19
Abstract: The invention comprises ester-oxazoline reaction products believed to have the formula <FORM:1059862/C2/1> where R is a divalent hydrocarbon radical, obtained by heating 3 mols. of tris-(hydroxymethyl) amino-methane with 2 mols. of an aliphatic dibasic acid having at least 10 carbon atoms and having a saturated carbon atom alpha to the carboxyl group to a temperature in the range 425-475 DEG  F.; and vinyl-ester-oxazoline reaction products, believed to have the formula <FORM:1059862/C2/2> obtained by heating 1 mol. of the above ester-oxazoline obtained by heating 1 mol. of the above ester-oxazoline product with 1.5-3.5 mols. formaldehyde to a temperature in the range 250-450 DEG  F.; and vinyl-polyester-oxazoline reaction products obtained by heating 1 mol. of above vinyl compound with 1-5 mols. maleic anhydride at 250-350 DEG  F.  Specified dicarboxylic acids are sebacic acid and dimerized linoleic acid.  The vinyl-polyester-oxazoline product obtained with maleic anhydride may contain free hydroxy groups if less than 5 mols. maleic anhydride is used and may also contain some linear polyester resulting from cross-linking through the maleic anhydride.  These vinyl-ester-oxazoline products may be polymerized (see Division C3).  Examples relate to derivatives of dimerized linoleic acid.ALSO:Vinyl-polyester-oxazoline resins are made by polymerizing, in the presence of a catalyst at about 350 DEG  F., a vinyl-polyester-oxazoline compound which is obtained by reacting a compound of the formula <FORM:1059862/C3/1> + 3H2O where R is a divalent hydrocarbon radical, with 1-5 mols maleic anhydride at 250-350 DEG  F. Polymerization occurs by carbon-to-carbon addition through vinyl-to-vinyl, maleic-to-maleic and vinyl-to-maleic double bonds. Benzoyl peroxide is specified as a polymerization catalyst. Examples 3 and 4 relate to the preparation and subsequent polymerization of polyester derivatives obtained from maleic anhydride and vinyl-ester-oxazoline of the above formula where R is the residue of dimerized linoleic acid.
Patent GB-666935-A (GB)
Title: Improved locking means for doors, lids, covers and the like
IPC: F16J13/08
Filed: 1949-10-04
Abstract: 666,935. Doors for resisting fluid pressure. DENT & HELLYER, Ltd., and FARRANT, W. J. Oct. 4, 1950 [Oct. 4, 1949], No. 25457/49. Class 123 (i). [Also in Group XXV]. A hinged or detachable door 9 for an aperture 2 of an autoclave &c. is locked in position by radial bolts 39 which are mounted on the door and are adapted first to be engaged with a circular lip 8 of the door frame 1 and then to lever ,the door so that a seal is effected between a raised seating 20 on the door and a packing ring 6 in s a i d frame. As shown the inner ends of the bolts 39 are engaged by apertures 38 in a non-rotatable sleeve 25, which is journalled in a housing 23 secured to the door by arms 21 and is axialiy movable to actuate said bolts by rotation of an inner co-acting screwthreaded shaft 29 ; these ends are also unrged into contact with the surface 36, 37 of a fixed axial cam 33, each by a spring 40 secured at one end to the respective bolt and at the other to said sleeve 25. The outer ends of the bolts may be guided by suitably positioned lugs on the door or, preferably, by slots in a strengthened portion 42 of a sheet metal cover 41 which is mounted on the door to enclose the entire locking mechanism except the handwheel 30 of the operating shaft 29.
Patent GB-883236-A (GB)
Title: Improvements relating to closures for containers
Inventor: SENIOR HENRY
IPC: B65D47/10
Filed: 1959-07-24
Abstract: 883,236. Container closures. BRITISH XYLONITE CO. Ltd. June 3, 1960 [July 24, 1959], No. 25466/59. Class 125(3). A closure device is formed with a tapered projection 6 which can be torn from a frusto-conical portion 2 along a weakened zone 8 to expose a discharge opening, the projection then being reversed and used to plug the opening.
Patent GB-727870-A (GB)
Title: Derivatives of sym-triacetylbenzene
IPC: C07C281/06
Filed: 1953-09-15
Abstract: The invention comprises the mono-, di- and tri-semicarbazones of 1 : 3 : 5-triacetylbenzene, which are prepared by dissolving the triketone in a lower alkanol and adding an aqueous solution containing the appropriate amount of semicarbazide, preferably as mineral acid salt.  Examples are given of the preparation of the three compounds.
Patent GB-278022-A (GB)
Title: Improvements in magneto electric machines
IPC: H02K21/38
Filed: 1927-09-27
Abstract: 278,022. Olivetti & Co., C. Sept. 27, 1926, [Convention date]. Inductor machines.-An ignition &c. magneto comprises one or more fixed magnets 1 enclosing a fixed armature 12 having pole-pieces 13, 15, shaped as shown in Fig. 3, and a rotating inductor consisting of two circular segments 10, 11 of magnetic material carried by a non-magnetic shaft 4. The inductor segments preferably are laminated and are supported by non-magnetic flanges 7, 8, 9 and secured by metal rods passing through the laminae and the flanges.
Patent GB-751197-A (GB)
Title: (-a-trifluoromethylbenzhydryloxy) trialkylamines and their salts
IPC: A01N33/08
Filed: 1954-09-02
Abstract: The invention comprises (a -trifluoromethylbenzhydryloxy) - trialkylamines of the formula <FORM:0751197/IV(a)/1> wherein n is 2 or 3, and each R is an alkyl radical containing from 1 to 4 carbon atoms inclusive, and hydrohalides thereof, and their preparation by reacting a -trifluoromethylbenzhydrol with an N-(o -haloalkyl)-dialkylamine in the presence of sodium ethoxide and an excess of absolute ethanol, the hydrohalides being prepared, if desired, by introduction of gaseous hydrogen halide into a solution of the amine in diethyl ether.  The products are useful in parasiticidal (e.g. fungicidal or bactericidal) compositions. Examples illustrate the preparation of N - [2 - (a  - trifluoromethylbenzhydryloxy) - ethyl] - diethylamine and - dimethylamine and their hydrochlorides, N-[3-(a -trifluoromethylbenzhydryloxy) - n - propyl] - diethylamine and its hydroiodide, and N [2-(a -trifluoromethylbenzhydryloxy) - ethyl] - di - n - butylamine and its hydrobromide.  a  - Trifluoromethylbenzhydrol is prepared from one part by weight of ethyl trifluoroacetate and 2 parts by weight of phenyl magnesium bromide, with decomposition of the resulting Grignard complex with iced hydrochloric acid.
Patent GB-1312505-A (GB)
Title: Method and means for producing cases having rounded sides and being open at both ends
IPC: B21D51/10
Filed: 1970-05-27
Abstract: 1312505 Bending; making tubular cases J S PEDERSEN [trading as AARHUS METALEMBALLAGE INDUSTRI] 27 May 1970 [27 May 1969] 25592/70 Headings B3A and B3E A method of making a tubular case having open ends in which two opposite sides of the case are curved comprises bending the edge portions of a flat blank to a radius of curvature between 20 and 40% smaller than the final radius over an arc between 75 and 120 degrees, preferably 90 degrees; further bending the blank about its centre line to form a U-shaped workpiece having a radius of curvature at its base between 20 and 40% smaller than the final radius of the side of the case it is to form over an arc between 125 and 175 degrees; then placing the workpiece on a mandrel whose cross-section corresponds in shape to the final cross-section of the ease and which is dimensioned to be a sliding fit within the case and engaging the workpieoe with two die members having recesses forming a cavity corresponding to the external shape of the case. The case is formed with a butt joint and may have a bead formed on one or both of its ends. To facilitate bead formation the blank may be formed with bevelled corners. A mandrel for use in the method comprises a part 20, Fig. 5, over which the blank is bent to form a U-shape by means of a die 32, Fig. 8, and this part is connected by a transition portion 46 to a part 44 corresponding to the final crosssection of the case. A beading tool, Fig. 6 (not shown), may be attached to the end of mandrel 44 and has a groove (60) for a press cheek at one end and a bead (62) at its free end. The case is pressed axially against the press cheek and its end curved over the bead (62) by a suitable die.
Patent GB-1191841-A (GB)
Title: Coated Metal Articles
Inventor: HILL HAROLD TAYLOR
IPC: C23C4/08
Filed: 1966-06-09
Abstract: 1,191,841. Coating with Cr-Mo alloys. WELLWORTHY Ltd. June 9, 1967 [June 9, 1966], No.25778/68. Headings C7A and C7F. A steel, iron or light metal article, e.g. a piston ring, piston or cylinder bore or liner is coated by plasma spraying with an alloy consisting of (% by weight) 95 to 75Cr, and 5 to 25 Mo. The metals may be mixed before or during spraying.
Patent GB-172711-A (GB)
Title: Improvements in or relating to the manufacture of rubber
IPC: C08K3/34
Filed: 1920-09-07
Abstract: 172,711. Feldenheimer, W., Plowman, W. W., and Schidrowitz, P. Sept. 7, 1920. Plastic compositions containing india-rubber and clay; vulcanizing-compositions.-Clay is mixed with india-rubber in the presence of a water-soluble soap, or of ingredients which will produce such a soap, such as oleic acid and an alkali in the solid state, the alkali being added in excess if desired. The clay is purified by any process, preferably by peptisation, e.g. as described in Specifications 106,890 and 121,191, [both in Class 82 (ii), Washing granular &c.]. In an example, with clay prepared as described in Specification 121,191 is incorporated, 3 per cent anhydrous sodium carbonate, and 3 per cent sodium oliate, by grinding. A mixing of 57 parts rubber, 40 parts of this treated clay, and 3 parts sulphur is vulcanized in 45 min. at 40lb per sq. in. pressure. Increasing the proportion of soap, &c. increases the rate of curing.
Patent GB-723070-A (GB)
Title: Improvements in safe-load indicating devices for cranes or the like
IPC: B66C23/90
Filed: 1953-10-15
Abstract: 723,070. Load indicators for cranes. AITKEN, R. L. Oct. 15, 1953 [Oct. 15, 1952], No. 25831/52. Class 78 (4). A safe load indicator for crane or the like comprises a lever pivotally mounted in a fixed casing, means for applying a substantially constant restoring force on the lever, a second lever lying in the central plane of the first lever, one lever operating an alarm circuit on reaching a predetermined deflection, means for applying a turning moment to the second lever indicative of the load and a moving member between the two levers and in contact therewith at a point automatically varied in accordance with the radius of the crane operation. A pair of parallel levers 3 is pivoted to a bracket 4 mounted in a casing 1 attached to the crane jib and has a vertical part 5 supporting contacts 9, the other contacts 10 of a micro-switch being mounted on the casing. A spring 7 connects the part 5 with an adjustable anchorage 8. A lever 11 lies above the levers 3 and is pivoted to a bracket 12 on the casing. A lever 15 has a roller 16 which lies between and contacts levers 3 and 11, a steadying roller 17 on the lever 15 is positioned between the levers 3. The lever 15 is connected to a lever 18 which is pivoted at 19 to the casing and carries a roller 21 urged by a spring 22 to contact a cam 20 on a shaft 23. A member on the shaft outside the casing is connected to a fixed part of the crane by a link whereby, as the angle of the jib changes, the cam rotates and moves the levers 18, 15, changing the position of the rollers 16. The hoisting rope passes round a pulley 27 on a pivoted bell-crank lever 26, one arm of which extends within the casing and has a sheave 28 round which a wire rope passes which is anchored to an eccentrically-mounted member 31 which has an extension connected by link 14 to the link 11. As the load increases the lever 26 rocks and tensions the rope 30, causing rotation of the member 31 about its eccentric mounting, moving the links 14 and 11 down wards to depress the links 3 and operate the microswitch to give a warning first of the approach of a dangerous load, then the actual danger signal. When a crane has two distinct ratings a different part of the cam surface is used by rotating the cam 20 on the shaft 23 for the different rating. To give an indication to the operator for which rating the cam has been adjusted, a cam 36 is mounted integrally with the cam 20, the cam 36 contacts a switch 37 to illuminate a signal.
Patent GB-601832-A (GB)
Title: Railway car truck
IPC: B61F7/00
Filed: 1945-10-04
Abstract: 601,832. Railway trucks; changing gauge of wheels. BUCKEYE STEEL CASTINGS CO. Oct. 4, 1945, No. 25889. Convention date, Nov. 9, 1944. [Class 103 (vi)] In a railway truck comprising side frames shown in plan at 1 spaced by a bolster 7 engaging a bolster saddle 9 sliding in guides 4 on side frames, the spacing of the side frames may be altered to accommodate a different track gauge by reversing the bolster saddle 9, The bolster saddle 9 engages the guides 4 by means of vertical surfaces 17 and lugs 15, 16 while the bolster 7 engages the web 10 of the saddle 9 by a recess in its underside and also by lugs 18. The saddle and bolster are supported from the side frame by the usual springs 20 which when removed permit the saddle 9 to be slid downwardly to a position below the guides 14 and then removed. The lugs 15 at one side of the saddle are thicker transversely of the truck than the opposite lugs 16, so that when the saddle is reversed the spacing between the side frames 1 is altered. The surfaces 14 of the guides 4 and 17 of the saddle 9 may be cylindrical to permit a limited, angling of the truck relatively to the underframe.
Patent GB-919563-A (GB)
Title: Improvements relating to teat cups for milking machines
IPC: A01J5/08
Filed: 1960-07-26
Abstract: 919,563. Teat cups. BURRY, H. W. Sept. 29, 1961 [July 26, 1960], No. 25904/60. Class 5(1). A teat cup comprises a lining having a collapsible tubular portion 1 of flattened crosssection, formed integrally with a non-collapsible tubular portion 3 by which it is directly connected to the milk-claw, and an intermediate part 2, of circular cross-section, formed with circular ribs 5 by means of which the lining is held taut in the casing of the teat cup. The lining is fitted into the casing with the lowest rib 5 against the outer surface of the casing 7 and as the lining is stretched in use, the tension is re-established by drawing the next lowest rib below the neck 6. To prevent the lining from becoming separated from the casing when the teat cup is out of use the lining is provided with protuberances 10. Specification 644,168 is referred to.
Patent GB-663183-A (GB)
Title: Improvements in or relating to the preparation of cyclopolymethylenic ketones
IPC: C07C45/65
Filed: 1948-10-06
Abstract: Cyclopolymethylenic ketones, alkylated or not, and having 10-18 members in the ring, are obtained by partial reduction of a 1.2-cyclopolymethylene ketol, using metallic zinc as reducing agent or zinc and hydrochloric acid.  When zinc alone is used, the vapours of the ketol may be passed over zinc dust at 300-360 DEG  C. in a vacuum.  Aqueous or gaseous hydrogen chloride may be used together with an organic liquid medium.  Pure ketols according to Specification 655,349 may be used, or products according to U.S.A. Specification 2,228,268 containing 1.2-diketones.  Examples describe the reduction of cyclohexadecanol-(1)-one-(2) with (1) zinc dust on asbestos in the vapour phase; (2) zinc dust and gaseous hydrogen chloride in ethyl alcohol.  Also (3) cyclodecanolone-1.2 is reduced in acetic acid with zinc and hydrochloric acid; (4) cyclopentadecanolone-1.2 is reduced in dioxane with zinc and gaseous hydrochloric acid; and (5) in ethyl alcohol with zinc and aqueous hydrochloric acid.  The semicarbazones of cyclohexadecanone and cyclodecanone are referred to.
Patent GB-588287-A (GB)
Title: Improvements in or relating to compressors or motors of the helical lobe rotor type
IPC: F04C18/16
Filed: 1945-10-06
Abstract: 588,287. Rotary compressors and motors. HOWDEN & CO., Ltd., J., and ULANDER, P. H. N. Oct. 6, 1945, No. 26082. [Class 110 (ii)] In a compressor or motor of the helical lobe or meshing-screw type, the inlet ends of the lobes incorporate aerofoil-shaped nose members to reduce the aerodynamic loss at the inlet. The rotor 1 having four convex lobes, and the co-operating rotor 2 having six concave lobes are geared together by gears 4, 5 and intermesh without contact. There is a clearance between the rotors and the casing 3. The rotors have aerofoil nose Wheels 19, 20 which are separated from the rotors proper by a sealing plate 21. The latter has an inlet port which allows gas to flow into the space between the lobes almost immediately after they disengage. The length of the aerofoil nose portion of each lobe varies between root and tip in such a way that the ratio of length to width is constant. The inlet end bearings 11, 12 are supported by streamlined spiders 22.
Patent GB-464748-A (GB)
Title: Improvements in rotating valves for internal combustion engines
IPC: F01L7/02
Filed: 1936-09-25
Abstract: 464,748. Valves. MOTORAKTIESELSKAPET AV 1935. Sept. 25, 1936, No. 26110. Convention date, Oct. 1, 1935. Addition to 437,781. [Class 7 (vi)] The rotary valve arranged between the valve casing and a stationary core, and controlling both inlet and exhaust, as described in the parent Specification, is replaced by a pair of such valves, one 6b controlling inlet at 4, and the other 6a controlling exhaust at 5, the stationary cores 7a and 7b being recessed at 8 and 9 respectively for the passage of the gases.
Patent GB-318546-A (GB)
Title: Improvements relating to the opening and closing of cylinders or capsules for compressed or liquefied gas
IPC: F17C13/04
Filed: 1929-08-28
Abstract: 318,546. Soc. Anon. d'Applications des Gaz LiquÚfiÚs. Sept. 5, 1928, [Convention date]. Addition to 204,715. Storing under pressure.-The element, screw or nut, which is caused to engage the stopper, has a conical end 70 engaging in a hole 71 in the stopper, which is thus operated by friction as soon as contact is established. A spring 26 bearing on a shoulder 22 of the screw 20 causes a thrust on the stopper and produces the required friction.