baber/WOPTO huggingface dataset:
Patent GB-807267-A (GB)
Title: Improvements in or relating to fluid pressure valves
Inventor: MOORE DEREK
IPC: F15B3/00
Filed: 1955-02-28
Abstract: 807,267. Fluid-pressure servomotor-control systems. ROLLS-ROYCE Ltd. Feb. 28, 1956 [Feb. 28, 1955], No. 5952/55. Class 135. The flexible metal diaphragms 11, 12 have their centres inter-connected by a rod 13 whilst the space 14 between the diaphragms is open to the inlet of a gas-turbine engine fuel-pump, not shown, via a channel 15, the diaphragm being subjected to opposing fluid pressures on their other sides; extending from the rod is an arm 17 having opposed pairs of ports 19, 20 and 21, 22 aligned with the free end thereof. The spaces 23, 24 between each pair of ports are joined through a conduit 25 and supply fluid at a controlled pressure to the cylinder of a power device, not shown; the spaces 23, 24 are also in communication with the space 14 by way of ports 20, 21, and with the fuel-pump deliverychannel 26 via ports 19, 22. Co-operating with ports 19, 20 is a valve member 27 formed with a pair of opposed frusto-conical elements 28, 29 disposed in the space 23 and located on a rod 30 maintained in contact with the arm 17 by differential pressure; a further pair of frustoconical elements 32, 33 is associated with ports 21, 22, the elements being oppositely disposed with respect to the other elements 25, 29 and located outside of the space 24, the valve rod 34 being held as before in contact with the arm 17. The valve elements each have the same area and the arrangement is such that the force on each valve element due to fluid pressure is opposed by a similar force on the other element which controls a port connected to the same inlet or discharge side of the pump so that the load transmitted to the diaphragms is reduced or eliminated. In a modification, the connections to the pump inlet and delivery ducts may be interchanged and the valve members connected to the operating arm; the valve members are preferably replaced by a single member formed with two pairs of valve elements. Specification 703,619 is referred to.
Patent GB-491230-A (GB)
Title: Improvements in mechanical toys
IPC: A63H29/04
Filed: 1937-02-27
Abstract: 491,230. Toys. MULLER, H. Feb. 27, 1937, No. 5986. [Class 132 (iii)] Mechanical toys have incorporated therein a blow-on plate or switch or switches deflected by a current of air or a spoken word to release a drop-weight lever to start or stop the toy, fire a shot or ignition cap, or actuate a visible or sound signalling device. In the construction shown in Fig. 1, the blow-on plate 3, 4 pivoted at 2, is operated to release the dropweight lever 6 to depress the locking lever 19 and release the running mechanism 1 of the toy. In the construction of jumping toy shown in Fig. 4, the blow-on plate 4 is operated to release the drop-weight lever 6 to move the rod 8 and locking member 11 so that the leg member 16, 16<1> is released from the notch 14 in the guide slot 13 and is actuated by the spring 18. In a modified form of construction the locking member 11 is provided with an extension in the path of movement of the drop-weight lever 6 and the blow-on plate 4 is of rubber or other flexible material. In the construction shown in Fig. 6, two drop-weight levers 6, 6<1> are provided, one 6 originally tilted towards the driving mechanism 1 and the other 6<1> away from the mechanism 1, and two locking noses 3, 3<1> are provided on the blow-on plate 4 so that on a first operation of the plate 4 the drop-weight lever 6 falls and a cam at its lower end raises the locking arm 19 to release the member 21 of the driving mechanism and start the vehicle which jerks the second drop-weight lever 6<1> into contact with the nose 3<1>. When the plate 4 is again operated the drop-weight lever 6<1> falls and further raises the locking arm 19 to stop the member 21 of the driving mechanism. The plate 4 is held in the upper position by a spring or by a counter-weight lever 4<1> and the drop-weight levers 6, 6<1> are re-set by the hand-operated device 24, 25. In a toy aeroplane construction each dropweight lever is engaged by a separate blowon plate formed by a wing of the aeroplane. Supplementary drop-weight levers may be provided for the release of shot in tank toys or for producing an audible or visible effect. In the construction shown in Fig. 14, a third drop-weight lever 6<11> is provided acting in the opposite direction to the other drop weight levers and jerked into engagement with a third nose-piece 3<11> when the toy is stopped on the second actuation of the blow-on plate. The drop-weight lever is released on a third actuation of the blow-on plate and strikes an ignition cap on an anvil 26. In a modified construction as applied to a toy aeroplane, two drop-weight levers are engaged by a nosepiece on a blow-on plate formed by one wing and a third drop-weight lever is engaged by a nose-piece on a blow-on plate formed by the other wing to effect the swinging-out of a landing flag.
Patent GB-429057-A (GB)
Title: Improvements in and relating to electric radiators and fires
IPC: F24C7/04
Filed: 1934-02-23
Abstract: 429,057. Electric radiators. BETTS, W. M., 260, Lower Addiscombe Road, Croydon. Feb. 23, 1934, No. 6011. [Class 39 (iii)] In a radiator provided with an aperture fitted with doors b which cover the heating elements d when not in use, the elements are moved away from the operative position in the aperture when the doors are closed. The element may be pivoted at d' and may be operated by arms f attached to the doors. In a modification the element is lowered into a heatinsulating box when the doors are closed. The element may carry contacts for making and breaking the heating circuit or may be permanently connected to a switch by flexible leads. The doors may be electrically controlled and may be interconnected with switches in the heating circuit as described in Specification 425,258. Also the doors may be thermostatically controlled. U.S.A. Specifications 1,928,642 and 1,928,643 are referred to.
Patent GB-311486-A (GB)
Title: Improvements relating to electro-magnetic acoustic devices for the interconversion of mechanical and electric oscillations, such as loud-speakers
IPC: H04R1/24
Filed: 1928-02-27
Abstract: 311,486. British Thomson-Houston Co., Ltd., and Parry, R. D. Feb. 27, 1928. Diaphragms; magnetic instruments.-A conetype loud-speaker &c. comprises one or more coaxial circular flexible divisions dividing its diaphragm into two or more contiguous and preferably dfferent-sized portions, each of which is provided with separate operating means. The diaphragm may be in the form of a dish, cap of a sphere, cone or truncated cone, whilst the operating means may be reeds or other known types of armature devices, annular coils, closed rings of conducting material or annular magnetic members. The Figure shows a moving coil arrangement in which the diaphragm 1 is divided into two unequal portions 2, 3, the portion 2 being flexibly supported at 4 to a casing 5 whilst the portion 3 is flexibly supported at 6 to the portion 2. Each portion is positively actuated by coils 7, 8 located in the annular air gaps 10, 11 of a magnet structure 9. The co-operating pole pieces forming the air gaps are of opposite polarity. By splitting up the diaphragm into two unequal portions, one portion can be arranged to produce the high frequency and the other the low frequency vibrations. The Provisional Specification refers to a split disc diaphragm.
Patent GB-329408-A (GB)
Title: Materials for marking animals
IPC: A01K11/00
Filed: 1929-02-26
Abstract: 329,408. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 26, 1929. Water-paints. - Animals are marked by a material consisting of a suspension or solution of a colouring matter in an aqueous emulsion of a free resin acid which preferably contains also an ammonium salt of a saturated or unsaturated water-insoluble fatty acid and may also contain water soluble organic solvents, such as methyl alcohol, ethyl alcohol, crude wood spirit, methylated spirit or acetone; softening agents such as train oil or castor oil; or disinfecting or healing agents such as cresol, pentachlorophenol, creosote or zinc oxide. The resin acids include all natural or artificial resins which are soluble in alkali such as colophony, wood resin, crude pine resin, manilla copal, the condensation product of cresol formaldehyde and sodium chloracetate, and the condensation products of salicylic acid with formaldehyde or the like. The acids whose ammonium salts may be used are liquid Swedish resin rich in oleic acid as obtained in the manufacture of sulphate cellulose, oleic, palmitic and ricinoleic acids, and the fatty acids obtainable from cotton seed oil, olive oil or coconut oil. Suitable colouring matters include nigrosine, ultramarine, soot, iron colours, Hansa Red B double paste, and lithopone or the like. In examples, (1) colophony, liquid Swedish resin rich in oleic acid, ammonia, water, alcohol, pentachlorophenol and Hansa Red B double paste are well stirred at 80‹ C.; (2) a fused mixture of colophony and train oil is poured into an agitated aqueous solution of ammonium oleate, ultramarine then being added. Specification 1128/10 is referred to.
Patent GB-977573-A (GB)
Title: Improvements relating to hot-blast stove installations
IPC: C21B9/10
Filed: 1963-02-15
Abstract: 977,573. Thermal regenerators. DIDIERWERKE A.G. Feb. 15, 1963 [Sept. 15, 1962], No. 6339/63. Heading F4K. A hot-blast stove installation is provided with means for preheating the combustion media for heating the stove or stoves in two or more regenerators arranged to be heated cyclicly by the waste combustion gases from the stove or stoves, and with means for passing the combustion media cyclicly through each heated regenerator; and the checkerwork of the stove or stoves is designed or dimensioned to ensure that the waste combustion gases enter the regenerator at a temperature high enough to heat adequately the combustion media therein. In the embodiment shown, three hotblast stoves 1 . . . 3 with external combustion chambers 4 . . . 6 supply their waste combustion gases to two regenerators 7, 8 and 9, 10, partitioned in half such that the checkerwork parts 7 and 9 and 9 and 10 are traversed by the combustion air and gaseous fuel respectively. The waste gases leaving the stoves at 400‹ C. or more are collected in duct 11 and conveyed to the regenerator requiring heat, whilst the combustion air and gaseous fuel are conveyed through ducts 13, 14 respectively to the other heated regenerator, to be preheated to 250- 300‹ C. before flowing through ducts 15, 16 respectively to the stove or stoves being heated at the time. The combustion air and gaseous fuel may by-pass the regenerator through ducts 18, 19 respectively whilst the waste combustion gases may by-pass the regenerator through duct 17. The regenerators are heated in a cycle independent of the blast cycle, and the checkerwork compartments of each regenerator may be spatially separate from one another. The checkerwork may be made of a material having high thermal storage capacity and high thermal conductivity.
Patent GB-1244150-A (GB)
Title: Improved yarn handling device
Inventor: EAST MALCOLM JOHN
IPC: B65H51/16
Filed: 1968-06-24
Abstract: 1,244,150. Feeding yarns. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 June, 1968, No. 6461/71. Divided out of 1,243,195. Headings DID and D1F. A yarn handling device comprises a yarn inlet tube 11 for conveying yarn and entrained air and an air chamber for driving air which chamber ends in an outlet pasageway 13 into which the inlet tube 11 extends, the end of the yarn inlet tube terminating within the end of the inlet tube being provided with three radial holes 40 penetrating its walls at equally spaced positions.
Patent GB-649544-A (GB)
Title: Improvements in gelatine derivatives
Filed: 1948-03-01
Abstract: A gelatine derivative is prepared by reacting gelatine with phthalic, succinic or maleic anhydride or a halogen or sulphur-substituted derivative thereof.  An aqueous dispersion of gelatine is preferably heated with a solution of the anhydride at a pH of 7-12, particularly at 30-50 DEG  C. and a pH of 10-11. Alkali may be added during the reaction to maintain the pH.  After neutralizing, the mass is set by cooling, and may be washed and dried.  Degraded gelatine or glue may be used.  The products are resistant to hardening by formaldehyde and chrome alum and have special viscosity characteristics.  They are of use in lithographic printing, for preparing silver halide dispersing, e.g. as described in Specification 649,545, as a vehicle for silver halide or in imbibition processes in photography.  In examples, gelatine dispersed in water at 40 DEG  C. is brought to a pH of 10 or 9.5 with caustic soda, and phthalic anhydride, in acetone or as powder, or succinic, maleic or chlor-maleic anhydride in acetone, is added while maintaining the pH.  After neutralizing with sulphuric acid, the product is gelled, shredded and optionally washed and dried.
Patent GB-729364-A (GB)
Title: Improvements in or relating to apparatus for artificial respiration
IPC: A61M16/00
Filed: 1953-03-09
Abstract: 729,364. Breathing apparatus. DRAGER, O. H. March 9, 1953 [March 7, 1952], No. 6495/53. Class 81 (2). Apparatus for artificial respiration in which gas is forced into a pipe leading to the lung in dependence on the pressure and alternately is extracted from the lung by an injector the exhaust side of which is connected with the outside air by a non- return valve and with the lung by a valve controlled by the pressure in the lung. The suction side 6 of an injector 1 supplying air or oxygen is connected with the lungs 9 or a pipe (not shown) leading from the lungs and the exhaust side 4 of the injector 1 is connected through a valve 3 with a chamber 7 in communication with the lungs 9 and through a spring controlled non-return valve 5 with the outside air. When valve 3 is closed, gas is sucked from the lungs 9 and chamber 7 by the injector 1 to produce an exhalation, the non- return valve 5 being opened. When the pressure within the chamber 7 reaches a predetermined minimum a diaphragm 11 in the wall of the chamber 7 moves inwardly to operate a lever 8 which opens the valve 3.. Gas from the injector 1 then passes through the valve 3 into the chamber 7 and the lungs 9 to cause an inhalation, the non-return valve 5 becoming closed. This continues until a predetermined maximum pressure is obtained in the chamber 7 when the diaphragm 11 moves outwardly to cause the valve 3-to close. This cycle of operations is repeated. In a modification (not shown) the suction side of the injector 1 and the chamber 7 are both connected with the lungs by pipes each containing a spring-controlled non-return valve.
Patent GB-1139064-A (GB)
Title: Electric bolt heaters
Inventor: SEARS PETER
IPC: F01D25/24
Filed: 1965-02-15
Abstract: 1,139,064. Electric bolt heaters. ENGLISH ELECTRIC CO. Ltd. 15 April, 1966 [15 Feb., 1965], No. 6515/65. Heading H5H. An electric bolt heater includes a cylindrical resistive heating element 14 adapted for coaxial insertion over at least a portion of its length in the bore of a tubular bolt 23 having a predetermined internal diameter, said element having, over at least such of its length as is adapted for such insertion, an external ceramic insulating coating 21, the thickness of which is in the range defined by the minimum thickness necessary to insulate the element electrically from the bolt and about twice that thickness, and the external diameter of the element, where it is arranged to be inserted in the bolt, being such that the heater makes a close sliding fit in said bore. A stainless steel core 11 is welded to a bar 12 carrying a terminal lug 13. The stainless steel tubular heating element 14 is crimped and welded at one end through a ring 15 to the core 11 and is secured at the other end, e.g. by welding 17 to a tube 16 separated from bar 12 by an insulating sleeve 19, e.g. of asbestos, and carrying a terminal lug 18. Insulating coatings 22 and 21 of alumina ceramic containing 4% chromium oxide are provided on the core 11 and on the element 14 and tube 16 overlying buffer coatings of nickel-chrome alloy. An air gap 20 separates the core 11 and element 14. The coated end of the tube 16 engages an end surface of a bolt 23 being heated. Alternative arrangements comprise the provision of a protective sheath of stainless steel on the portion of the coating 21 which enters the bore; making the core 11 and element 14 of nickel-chrome alloy and omitting the air gap 20; omitting the core; and using tubular cores or solid heating elements.
Patent GB-1178502-A (GB)
Title: Apparatus for effecting an intimate contact between a Gas and a Liquid
Inventor: JANSSON GOESTA
IPC: B01D47/06
Filed: 1968-02-09
Abstract: 1,178,502. Gas/liquid contact apparatus. SVENSKA FLAKTFABRIKEN A.B. 9 Feb., 1968, No. 6579/68. Heading B1R. A gas/liquid contact apparatus comprises a bed of lightweight spherical elements 6 in a casing 1 disposed between gratings 7 and 8 so that in use the spherical elements are maintained in a floating condition by gas flowing upwardly from an inlet 2, the spherical elements being wetted by an upwardly directed spray 4 disposed below the grating 7. In a modification a part of the casing below the grating 7 may be convergent and the spray 4 arranged in a lower region of the convergent part. The apparatus may comprise a series of floating beds of spherical elements wetted by upwardly directed sprays.
Patent GB-356131-A (GB)
Title: An improved process for the production of pure a-m-xylidine from technical xylidine
Filed: 1930-02-28
Abstract: As-m-xylidine is obtained from the crude xylidine mixture obtained by the nitration of xylene, and reduction, by dissolving the mixture in an anhydrous solvent, and passing in dry hydrogen chloride.  Mixtures of solvents may be used.  According to examples the crude mixture is treated with hydrogen chloride in benzene, benzine, and ether.
Patent GB-1413655-A (GB)
Title: Electrical signal processing apparatus
IPC: G06G7/20
Filed: 1972-02-14
Abstract: 1413655 Calculating roots ROSEMOUNT ENG CO Ltd 5 Feb 1973 [14 Feb 1972] 6750/72 Heading G4G A circuit for yielding the square root of an analogue input V 1  comprises a high-gain amplifier with a feedback loop incorporating control means to effect two successive multiplications by the same factor M of a reference signal V 2  whereby the feedback signal M<SP>2</SP>V 2  tends to equal the input signal V 1  and the output V 0  of the first control means is equal to MV 2  and is thus proportional to the root of V 1 . As shown, the amplifier 2 is in the form of a high-gain comparator to which input V 1  is applied and with output applied to one of the logic inputs of a JK flip-flop 4 to the other logic input of which is applied a constant signal. If a clock pulse input f 1  is applied to the flip-flop, the output will be in the form of constant-duration pulses at a frequency f 0  whose maximum value is f 1 /2. This signal and its inverse are applied to switching circuits 11, 13 and 12, 14 which operate successively on reference input signal V 2  to produce, after averaging, successive output signals (f 0 /f 1 ).V 2  and (f 0 /f 1 )<SP>2</SP>.V 2 . The second output is fed to the comparator 2 and tends to equal V 1 . Thus, the output V 0  of the buffer amplifier 19 between the switching circuits is proportional to the root of V 1 . By providing further switching circuits, higher-order roots may be obtained. The JK flip-flop may be replaced by a D-type flip-flop (Fig. 2, not shown) or, if the frequency f 0  is not required, the output of the comparator may be fed to a Schmidt trigger circuit. Another form of analogue to pulse-frequency converter which may be used comprises a digital counter or shift register with a recirculatory loop (Fig. 6, not shown).
Patent GB-244965-A (GB)
Title: Improvements in and relating to suspension insulators
IPC: H01B17/02
Filed: 1925-03-12
Abstract: 244,965. British Thomson-Houston Co., Ltd., (General Electric Co.). March 12, 1925. Pottery.-The stem of a porcelain or other insulator having one or more skirts 8, 9, is formed with tapered seatings 6, 7 to fit corresponding apertures in the skirts. In manufacture, the green porcelain of the stem and skirts is coated with glaze, the skirts are placed in position, and the whole insulator is fired, the skirts shrinking on to the stem and the glaze fusing to bind the parts together. The skirt 9 has a drip flange 15 and a flange 16 which serves as a firing foot on which the insulator is supported during firing, so that the skirt 8 is seated by its own weight on the seating 6, and the weight of the skirt 8 and stem 1 forces the seating 7 into the skirt 9. The skirt 8 has a drip flange 12 and is ribbed and grooved. Slot and stud end caps 19, 20 are connected to the stem by elastic material 23, 24, and cement 25.
Patent GB-622335-A (GB)
Title: Improvements in or relating to devices for suspending washing
IPC: D06F53/04
Filed: 1947-03-11
Abstract: 622,335. Clothes-lines. ZAUGG, H. March 11, 1947, No. 6773. Convention date, Nov. 16, 1946. [Class 52 (v)] A device for suspending washing comprises a rotatable rope carrying member which is spring- controlled to effect an automatic winding up of the rope. As shown a casing 1 houses a hollow shaft 8 surrounding a rod 6 having a rectangular extension fitting in a disc 4. A spring 7 is connected between the shaft 8 and the rod 6. Fixed to the rod 6 is a locking disc surrounding the rectangular extension and having recesses in which engage pawls pivoted to the shaft 8. Pairs of flanges 13a, 13b, 14a, 14b, 15a, 15b, form reels for ropes 16, 17, 18 the opposite ends of the ropes being attached to a member 20 provided with securing hooks 22. If the pull on the ropes is interrupted the pawls prevent the spring from rewinding the ropes which it will do if the pull is released. The flange 15b is provided with radial slots which may be engaged by a pin 25 to prevent the ropes being withdrawn too far when in use.
Patent GB-535545-A (GB)
Title: Improvements relating to propelling pencils
IPC: B43K24/10
Filed: 1940-04-15
Abstract: 535,545. Pencil holders ICHIMURA, K. April 15, 1940, No. 6794. Convention date, Dec. 23, 1939. [Class 146 (iii)] Propelling - pencils have two lead-tubes 1 carried by push-tubes 2 each provided with an inclined projection 3 engaging helical grooves 9 in a push-rod 10 so that rotation of rod 10 will depress one of the tubes 1. Each tube 1 slides in a tube 7 having an aperture 8 for the lead-holder 5 which is carried by tube 6. Rod 10 is carried by a head 11 mounted in a rotating ring 14 carried by a cap 16 secured to the pencil body 17. The cap 16 has an aperture 18 for the leads.
Patent GB-609073-A (GB)
Title: Improvements in or relating to insecticidal compositions
IPC: A01N25/04
Filed: 1946-03-05
Abstract: An aqueous insecticidal emulsion is prepared by emulsifying a molten compound of the general formula <FORM:0609073/VI/1> R1 and R2 being halogen or alkyl groups, and R3, R4 and R5 being halogen atoms, in a hot aqueous medium with the aid of an emulsifying agent comprising a wetting agent and a protein material, and cooling the resulting emulsion below the solidifying point of the disperse phase. Dichlorodiphenyl-trichloroethane is the preferred compound. Specified wetting agents are the sodium salt of isopropyl napthalene sulphonic acid, sodium lauryl sulphate and polyethylene condensation products, e.g. "Lubrol" (Registered Trade Mark) and specified proteins are gelatine animal glue and casein. Substances such as coumarone resins, naphthalene, chloronaphthalenes, alkyl naphthalenes, p-chlorobenzene, cyclohexanone, toluene, xylene and coal-tar naphtha may be added to the compound to depress the melting point thereof.  The finished aqueous dispersion may be passed through a homogenizer or colloidal mill in order to improve its keeping qualities. Specifications 547,871; 573,832, 583,394, [both in Group VI], and 20313/45 (as open to inspection under Sect. 91), are referred to. The Provisional Specification describes also the use of the wetting agents and proteins separately.