baber/WOPTO huggingface dataset:
Patent GB-1025937-A (GB)
Title: Improvements in or relating to energy controlling devices for electric heating apparatus
Inventor: FIELDER ERIC CHARLES WILLIAM
IPC: H01H9/54
Filed: 1963-10-08
Abstract: 1,025,937. Switching systems; switches held set and freed mechanically. E. K. COLE Ltd. Nov. 2, 1964 [Oct. 8, 1963], No. 39517/63. Headings H2B and H2H. A switching system for controlling the energization of a load such as an electric blanket 1 comprises a three-position switch in one position of which the load is fully energized from an A.C. supply 2, 3; in the second position of which the load is only partially energized by way of a half-wave rectifier 5 and in the third position of which the load is de-energized. Lamps 4, 6 are provided to indicate the degree of energization. The switch may be of the sliding contact type or the push-button type having three buttons 10, 11, 12. Contact members 16, 17 and 18, 19 are movable with the buttons 10 and 12 respectively, the contacts 16, 17 co-operating with contacts 20, 21 and 22, 23, 24 carried on an insulating member 30 whilst contacts 18, 19 co-operate with contacts 25 ... 29. The buttons are provided with members 43, 44 to retain the buttons in the operated position, such an operated button being released upon subsequent operation of a further button.
Patent GB-1017619-A (GB)
Title: 2, 2, 6, 6-tetramethyl-4-cyano-4-carbalkoxy-1-oxa-2, 6-disila í¡í¡ and production thereof
IPC: C07F7/08
Filed: 1964-09-29
Abstract: The invention comprises 2,2,6,6-tetramethyl-4 - cyano - 4 - carbalkoxy - 1 - oxa - 2,6 - disilacyclohexanes of formula <FORM:1017619/C3/1> wherein R is an alkyl group containing up to 6 carbon atoms. These compounds may be prepared by reacting a cyanoacetic alkyl ester, 1,3 - di - (bromomethyl) - tetramethyl disiloxane and a tertiary amine (preferably trimethylamine or triethylamine), preferably in the presence of an inert solvent.  The functional groups of the oxadisilacyclohexanes may be modified:-reaction with aqueous ammonia yields 2,2,6,6 - tetramethyl - 4 - cyano - 4-carbamido - 1 - oxa - 2,6 - disilacyclohexane; acid hydrolysis yields 2,2,6,6-tetramethyl-4-cyano - 4 - carboxy - 1 - oxa - 2,6 - disilacyclohexane; alkaline hydrolysis followed by acidification yields 2,2,6,6 - tetramethyl - 4 - cyano-4 - carboxy - 1 - oxa - 2,6 - disilacyclohexane which on decarboxylation followed by nitrile hydrogenation gives 2,2,6,6 - tetramethyl - 4 aminomethyl - 1 - oxa - 2,6 - disilacyclohexane. The example describes the preparation of 2,2,6,6 - tetramethyl - 4 - cyano - 4 - carbethoxy -1-oxa-2,6-disilacyclohexane.  Uses.-Preparing surface-active siloxanes.
Patent GB-1409589-A (GB)
Title: Piston compressors
IPC: F04B39/12
Filed: 1973-08-21
Abstract: 1409589 Reciprocating piston compressors ATLAS COPCO AB 21 Aug 1973 39632/73 Heading F1N Gas compressed in the compression chamber 19 of a reciprocating piston compressor is discharged past an outlet valve 20 to a chamber 8, 9 in a cylinder head 5, 6, 7, the gas being cooled and pressure damped by passage through a spiral passage 10, 11 connecting the chamber 8, 9 to an outlet terminal 23. The cylinder head is in three finned parts 5, 6, 7 secured by bolts 13 to the cylinder 1 with the inter-position of a valve plate 4. Gas enters the compression chamber 16 in the head part 5 and passages 14 in the plate 4 controlled by a reed valve 17 clamped between the plate 4 and the cylinder 1. A guard 21 held by a spring 22 limits the deflection of the outlet valve 20.
Patent GB-1300040-A (GB)
Title: Radiator assembly
IPC: F28F1/12
Filed: 1969-12-05
Abstract: 1300040 Heat exchangers SOC ANON DES USINES CHAUSSON and J M WILSON 5 Dec 1969 39739/72 Divided out of 1297968 Heading F4S In a fin and tube radiator assembly comprising a plurality of tubes 1 extending between headers 4, pairs of corrugated fin elements 6 1 , 6 2  are disposed between adjacent tubes 1, the fin elements being attached to opposite sides of a spacer sheet 8 which projects beyond the ends of the fins. The projecting edges 8a of the sheet abut with the headers 4 thereby spacing the fin elements from the headers. The projecting edges 8a may be serrated.
Patent GB-986087-A (GB)
Title: Container assembly for displaying and protecting goods
IPC: B65D77/02
Filed: 1963-10-09
Abstract: 986,087. Packages; cartons. C. E. PALMER. Oct. 9, 1963 [Oct. 26, 1962], No. 39766/63. Headings B8C and B8P. A package, Fig. 8, comprises a carton 100 having a window aperture 120 and a tray 122, Fig. 10, made of transparent plastics which when filled is placed in the carton such that its planar base 124 is adjacent wall 102 in which the window is formed. The tray 122 is held erect by tongue-and-slot connections 134, 138 and at two opposite ends is provided with arcuate slots 142 delimiting flaps 144 which co-operate with dust flaps 116, 118 of carton 100 to rigidify the package and render it substantially tamperproof. In a second embodiment, Fig. 1, several trays with contents 4 are contained within a carton 2. In this embodiment the tray side walls are only about one-third the height of the carton and the goods are held within the tray by a transparent plastics wrapper 38 which may be heat-sealed or otherwise adhered to the tray or may be a complete overwrap which is sealed to itself or a tubular cover heat-shrunk on to the tray and contents. The tray of this embodiment may be as described in Specification 906,075. Other embodiments show various window formations and tray arrangements within the carton. The carton may be made of plastics, metal foils or laminates thereof, but is preferably of paperboard and, among the plastics mentioned as suitable for the tray are biaxially oriented polystyrene and polyethylene and for the wrapper 38, cellulose acetate and rubber hydrochloride. U.S.A. Specification 2,954,725 also is referred to.
Patent GB-1085754-A (GB)
Title: Improvements in and relating to over-running roller clutches
IPC: F16D41/067
Filed: 1964-10-01
Abstract: 1,085,754. Ratchet clutches- TORRINGTON CO. Oct. 1, 1964 [Oct. 10, 1963], No. 39927/64. Heading F2C. A one-way jamming roller clutch cage of thin spring metal comprises parallel circumferential rims 23 and spaced radial cross-bars 29 formed with bent-out spring fingers 31, 32 and, as shown in pre-bent form in Fig. 3, connected to the rims by side bars 26 and transverse portions 25. A thin malleable sheet metal outer race 14 comprises cam surfaces 17 with intervening radial abutments 18 and inner annular surfaces 35. Before assembly the outer race comprises one inturned end flange 16. To assemble, the cage is inserted in the outer race so that inturned ends 24 abut, the rims 23 are held concentric by the surfaces 35, and outer portions 30 of the cross-bars 29 engage the abutments 18. Rollers 19 having shoulders 20 and tapered trunnion ends 21 are then lodged between the cross-bars and retained by bending-in an opposite second end flange 16 of the outer race. The spring fingers 31, 32 have end tabs 33, 34 which bear on the rollers to maintain their axes parallel to the clutch axis and urge them into wedging engagement. The outer race may be hardened, as by heat-treatment, and the cage may be heat-treated within the outer race. In use, the outer race is press-fitted into a frame, pulley or gear and a shaft or inner race thereon is inserted within the rollers, the shoulders 20 thereon facilitating insertion.
Patent GB-1359953-A (GB)
Title: Transfer apparatus
IPC: B65G57/18
Filed: 1972-08-29
Abstract: 1359953 Transfer apparatus MORGAN CONSTRUCTION CO 29 Aug 1972 [13 Oct 1971] 39994/72 Headings B8A and B8C Apparatus for transferring magnetically permeable articles between two locations at the same level and for simultaneously inverting the articles during the transfer comprises a magnet 58 mounted for pivotal movement about an axis between the two locations and means, e.g. piston and cylinder 74, 76 (Fig. 4) pivoting the magnet about the axis while vertically adjusting the position of the axis relative to the level of the two locations (by a distance 80, Fig. 4). Elevator 16 receiving the inverted articles thus remains at the required level for reception of articles transferred without inversion. The apparatus is used to form a stack of the articles, a row of articles being inverted and transferred at regular intervals (e.g. as shown, every 5th row) to stabilize the stack. The apparatus may transfer steel channels, angles and other sections produced by a rolling mill.
Patent GB-1513037-A (GB)
Title: Electrical switches
IPC: H01H13/18
Filed: 1975-10-01
Abstract: 1513037 Actuating devices for switches UNIMAX SWITCH Ltd 30 Sept 1976 [1 Oct 1975] 40110/75 Heading H1N A snap-action switch comprises a switch actuator in the form of a length of wire 21 which is pivoted in a hole in the moulded plastics switch casing 1 to move a slide member 25 by a bent end portion 23 of the wire, the slide 25 engaging an electrical switching element 7 within the casing. The switching element 7 comprises end portions 9, 10 connected by side portions 11, and a pair of limbs 12 and a central limb 13 extending inwardly from ends 9, 10 and having free ends engaging lugs 5, 6 respectively. The element 7 carries a contact 15 for engagement with fixed contacts 16, 18.
Patent GB-1378222-A (GB)
Title: Ethylene interpolymer pellets of reduced tackiness and process of  preparation
IPC: C08J3/12
Filed: 1972-08-30
Abstract: 1378222 Polyethylene interpolymer pellets EI DU PONT DE NEMOURS & CO 30 Aug 1972 [30 Aug 1971 15 March 1972] 40231/72 Heading B2E  Ethylene interpolymer pellet cores have a smooth, durable coating in the form of a film of a harder, less tacky ethylene interpolymer. The interpolymer of the core or coating may be a polymer of ethylene with: vinyl esters, e.g. acetate, and their terpolymers with acidic monomers, e.g. (meth) acrylic acids, or with carbon monoxide, e.g. ethylene/vinyl acetate/ CO; (meth) acrylates e.g. isobutyl acrylate as well as their terpolymers with acidic monomers such as (meth) acrylic acid; acidic monomers e.g. (meth) acrylic acid; olefins as binary polymers or terpolymers such as ethylene/propylene/hexadiene. The interpolymer may also be a copolymer of ethylene with an unsaturated ester of C 1  to C 4  monobasic aliphatic acids, acrylates or methacrylates with an alcohol moity which is a C 1  to C 4  monohydroxy alcohol, or an ester of acrylic, methacrylic, maleic acids or malic anhydride. The polymer of the core may be formed by extrusion and subsequent cutting into pellets. The coating is preferably formed by extending a cutting the core into a dispersion or diluted dispersion of the coating material. The dispersion may be then optionally coagulated by addition of non- solvent. The coated pellets are finally dried. In examples polyvinyl acetate/ethylene copolymer is used for core and coating. The cores may be alternatively sprayed with or dipped into a solution or dispersion of the coating interpolymer.
Patent GB-1205318-A (GB)
Title: Improvements in control circuits
IPC: H02M3/135
Filed: 1968-08-23
Abstract: 1,205,318. Electric control of brakes. ROBERT BOSCH G.m.b.H. 23 Aug., 1968 [31 Aug., 1967], No. 40331/68. Heading F2E. [Also in Divisions H2 and H3] A circuit provides for rapid de-energization of an eddy-current brake 10 which is pulse-fed from a battery 13 via a main switch 12 and a thyristor 14 (see Division H3) under control of a potentiometer 24, and which has a free-running diode 25 maintaining the inductive current in the load 10 between pulses. To shorten the decay time when the switch 12 is opened the diode 25 is arranged as shown to be disconnected thereby, and the inductive energy of load 10 is dissipated in a resistor 26 in series with a second diode 27 connected as shown.
Patent GB-1525944-A (GB)
Title: Brushless alternators
IPC: H02K19/16
Filed: 1975-10-02
Abstract: 1525944 Inductor alternators I MRCUN 2 Oct 1975 [22 Oct 1974] 40359/75 Heading H2A A brushless alternator comprises two relatively rotatable members one of which has teeth 1 interconnected by a yoke 8b and carrying output windings 4, the teeth having axially spaced surfaces 19a, 19b which interact with respective arrays of pole pieces (15a), 15b, on the other member, the pole pieces of the two arrays being offset peripherally and being connected to opposite ends of a hub 7c. As shown, the teeth 1 are on the stator and support an excitation winding 6.
Patent GB-1062998-A (GB)
Title: Large volume lithium-drifted diodes
IPC: H01L31/00
Filed: 1965-09-23
Abstract: 1,062,998. Semi-conductor devices. ATOMIC ENERGY OF CANADA Ltd. Sept. 23, 1965 [Dec. 16, 1964], No. 40622/65. Heading H1K. Lithium is diffused into at least two surfaces of a crystal of P-type semi-conductor material, a bias potential is applied between these surfaces and an electrical contact placed centrally on an end surface not diffused with lithium, and the crystal is heated so that lithium ions drift inwards from the diffused surfaces until the P-type region is reduced to a small central core. This core may be removed by drilling, machining, or etching and a P + contact applied to the surrounding intrinsic region. The resulting PIN diode is particularly intended for use as a radiation detector.
Patent GB-1389539-A (GB)
Title: Manufacture of composite materials
IPC: D21F9/00
Filed: 1971-09-01
Abstract: 1389539 Wet-laid reinforcing fibrous material NATIONAL RESEARCH DEVELOPMENT CORP 18 Aug 1972 [1 Sept 1971] 40699/71 Headings D2A and D2B In the production of a felt of substantially aligned fibres suitable for incorporation into a composite material a dispersion of fibres in a liquid is passed through a nozzle 4 capable of substantially aligning the fibres and is deposited on a screen 1 which is moving with an angular velocity sufficient to subject the dispersion to centrifugal force whereby the liquid passes through the screen and the substantially aligned fibres form a felt on the screen. The angular velocity of the screen may be increased as the thickness of the felt increases, and the speed of the screen exceeds that of the fibres leaving the nozzle. The nozzle may be stationary, or it may move transversely of the screen whereby the felt can be formed of more than one ply with the fibres of adjacent plies being substantially aligned in different directions. The relative movement between the screen and the nozzle may be maintained constant when the angular velocity of the screen is increased by moving the nozzle with an appropriate angular velocity. The screen may be profiled so that a shaped felt can be formed, or the screen may be masked in selected areas so that a felt having spaces or thinner parts in the selected areas can be formed. The fibres may be high strength brittle ceramic fibres, silicon carbide, silicone nitride, chopped carbon fibres or asbestos. The dispersion liquid may have a viscosity of at least 10 centipoise and may be aqueous solutions of dispersing agents, aqueous alginates, aqueous and non-aqueous solutions of synthetic resins or glycerine. In an example a felt of chopped carbon fibres was impregnated with an epoxy resin and moulded to give a composite material.
Patent GB-1019615-A (GB)
Title: Projector lamp arrangements
IPC: G03B21/20
Filed: 1962-10-29
Abstract: 1,019,615. Projector lamp adjustments. VOIGTLANDER A.G. Oct. 29, 1962 [Oct. 27, 1961], No. 40863/62. Heading F4R. [Also in Divisions G2 and H2] A pin-base projector lamp whose size may vary, is adjustable relative to the optical axis and may be released from its socket 10 in movable support 9 by lever 19 pivoted at 20 to partition 7 which is fixed to base plate 1. Lamp-socket 10 is carried by support 9 which, for lamp adjustment, is movable vertically in pin-and-slot guideway 8 in partition 7 and has a pin 17 passing through a slot in the partition to be engaged by the forked end 18 of lever 19 moving between stops 25, 26 on adjustable segment 22 which enter hole 27 in the lever. When lever 19 is moved to position C holder 10 is lowered until spigot 28 on the lamp base strikes ejector pin 29 thereby loosening the lamp which may then be removed.
Patent GB-1439736-A (GB)
Title: Polymerisation process
IPC: C08F2/22
Filed: 1974-09-19
Abstract: 1439736 Chlorobutadiene-sulphur dioxide copolymers E I DU PONT DE NEMOURS & CO 19 Sept 1974 [20 Sept 1973 20 May 1974] 40897/74 Heading C3P Chloroprene and/or 2,3-dichlorobutadiene optionally with a minor amount of another monomer is polymerized with sulphur dioxide in aqueous acidic emulsion in the presence of an acid-stable surfactant, 0À001-1 part of an iron chelating compound per 100 parts of monomer and there is added incrementally or continuously a ferrous salt as needed to initiate polymerization and maintain conversion at up to 1% per minute. In examples ferrous ammonium sulphate is used in combination with tetrasodium ethylene diamine tetraacetate or citric acid as complexing agent. The sulphur dioxide is added in solution in water or in the form of sodium bisulphite in amounts of 0À1- 0À2% based on monomer. Methacrylic acid and ethylene dimethacrylate are exemplified as comonomers.
Patent GB-1482744-A (GB)
Title: Nozzle for heat exchange tube
IPC: F28F13/12
Filed: 1974-08-30
Abstract: 1482744 Nozzles DENCO MILLER Ltd 30 Aug 1974 [30 Aug 1973] 40929/73 Heading B2F [Also in Division F4] A nozzle for insertion into a heat exchange tube comprises a plurality of equidistantly spaced slots extending through the peripheral wall of a hollow cylinder 1 to communicate tangentially with a longitudinally extending bore 7 which is closed at one end by a plate 2. The slots 8, which are defined by side walls 9 curved in the form of a spiral, taper towards the interior of the cylinder. The side wall of the cylinder is stepped to form a shoulder 4 between portions 5 and 6 of different diameters. In use the narrower portion 6 of the nozzle is tightly fitted into the end of a heat exchange tube (not shown), while the wider portion containing the slots 8 is located outside the tube. The arrangement of tangential slots serves to impart a swirling motion to heat exchange fluid, such as air, entering the tube, said swirling motion tending to eliminate the formation of a static boundary layer adjacent the wall of the tube.
Patent GB-1177325-A (GB)
Title: Method of Furniture Construction
IPC: A47C7/24
Filed: 1968-02-12
Abstract: 1,177,325. Securing upholstery. KNOLL ASSOCIATES Inc. 12 Feb., 1968, No. 40988/68. Divided out of 1,177,324. Heading A4M. A method of upholsterihg a chair having a wooden frame 10 supporting a unitary, moulded plastics shell 50 defining the seat and back, comprises contacting the frame 10 with a peripheral flange 50b of the shell 50, securing the flange 50b to the frame 10 by staples 56 passed through a groove 50f in the flange 50b, and covering the flange 50b with a marginal portion of a foam rubber pad 52 secured to the shell 50. The pad 52 may be glued to the shell 50 either before or after the shell 50 is secured to the frame 10. Marginal portions of upper and lower fabric covers 54 are disposed between the flange 50b and the frame 10.
Patent GB-1277922-A (GB)
Title: Photo-optical drawing heads for use in automatic drawing machines
IPC: B43L13/00
Filed: 1969-08-18
Abstract: 1277922 Photographic apparatus G CORADI A G 18 Aug 1969 [19 Aug 1968] 41173/69 Heading G2A A photo-optical drawing head containing a light source 11 is provided with a first shutter 18, operable by electro-motive or electromagnetic means, and a second shutter 15, before the first shutter, for controlling the intensity of light emitted by the head, the second shutter being an electro-optical or a magneto-optical shutter. The head forms part of an automatic drawing machine having a drawing board 1 movable relatively to the head. Light from the source 11 and a concave reflector 12 is imaged at infinity by a first auxiliary condenser system 13, and the parallel beam so formed is reflected by a cold light mirror 14 into the second shutter 15. Light passing therethrough falls on a second auxiliary condenser system 16 which forms a real image of the source 11 at the aperture of an apertured diaphragm 17, and from there, when the first shutter 18 is open, light is focused by a main condenser 19 on the aperture of an apertured diaphragm or mask 20, the final image being reproduced on photo-sensitive material 3 by a lens system 21. As the head and/or a carriage 6 are moved in response to control impulses from a storage medium, the light beam passing through the mask 20 traces out a pattern on the material 3. The intensity of this light beam is adjusted by the second shutter 15 according to the drawing speed. The second shutter may comprise a Kerr-cell Fig.2 (not shown), light plane polarized by a polorizer (22) entering a cylinder (24) filled with nitrobenzene or chloroform. On leaving the cylinder the light enters an analyzer (26) turned through 90 degrees relative to the polarizer (22), where it is mostly extinguished voltage being applied to electrodes (27, 28) only when the head moves relative to the drawing board. The Kerr cell may be replaced by a Faraday cell or by an ammonium-dihydrogenphosphate or potassiumdihydrogenphosphate cell. The apertured mask 20 is advantageously a rotary diaphragm having a plurality of different sized apertures. In another embodiment, Fig. 5 (not shown), the head remains stationary and the drawing board moves. The cold-light mirror (50) is situated after the second shutter (15) and reflectes long wavelength light therefrom to a photo-cell (51) which is coupled back to the shutter (15). The provision of the second shutter ensures that the exposure can be commenced and terminated accurately.
Patent GB-1191425-A (GB)
Title: Latent Hardener for Epoxy Resins
IPC: C08G59/68
Filed: 1968-08-28
Abstract: 1,191,425. Curing epoxy resins. CIBA Ltd. 28 Aug., 1968 [29 Aug., 1967], No. 41179/68. Heading C3B. A latent catalyst for the curing of epoxy resins with dicyandiamide is a condensate of equimolar proportions of phthalic anhydride and diethylenetriamine. From 4 to 15 parts by weight of dicyandiamide may be used per 100 parts of epoxy resin. The weight ratio of dicyandiamide to the condensate may range from 3 : 1 to 1 : 1. Examples relate to the curing of diglycidyl ethers of bisphenol A. Compositions of the epoxy resin, curing agent and accelerator are stable for long periods at ambient temperature but may be cured readily on heating, e.g. for 1 hour at 150‹ C.
Patent GB-1114752-A (GB)
Title: Improvements in or relating to corpuscular-beam apparatus having an object cartridge
IPC: H01J37/20
Filed: 1966-09-15
Abstract: 1,114,752. Electron and ion microscopes. SIEMENS A.G. 15 Sept., 1966 [16 Sept., 1965; 8 July, 1966], No. 41253/66. Heading H1D. In an electron or ion microscope in which the object holder 11 is movable into the bore 9 of the objective lens, as shown a magnetic lens with polepieces 4, 5, the object space is cooled by a ring or disc 7 of non-magnetic material which is connected to a refrigerating device in order to avoid contamination of the object. The minimum diameter of the aperture in the disc 7 is equal to or greater than the maximum diameter of the lens bore. The objective lens may be electrostatic in which case the disc 7 is located in the gap between two electrodes. The cooling surface of the aperture in the disc 7 may be increased by grooving 17 and grooving 17a may also be provided in the upper surface of the disc. An additional cooling disc 20 connected to the disc 7 by struts 21, 22 is provided above the object stage 14. Molecular sieves of zeolite 25 may be provided on the disc 20 which is then provided with a heating coil. A metallic mesh or spring connection may be provided between the object holder 11 and the disc 7. The object holder 11 is held by struts 12, 13 suspended by the object cartridge 10 which is itself seated in a conical aperture of the object stage 14. Passages 28, 29, 30 are provided in the object stage for the drawing off of contaminating atoms or molecules. As shown these passages may be straight, inclined or elbow-shaped. The disc 7 is connected to the refrigerating device through a rod 8 or, alternatively, coolant may be introduced into the apparatus and allowed to evaporate in hollow spaces within the discs 7 and/or 20.