baber/WOPTO huggingface dataset:
Patent GB-898866-A (GB)
Title: Improvements in or relating to ketones and to polymers thereof
Inventor: THOMAS PETER RAYMOND
IPC: C07C49/217
Filed: 1959-04-01
Abstract: The invention comprises polymers of vinyl ketones which are derivatives of methyl vinyl ketone in which the methyl group bears two substituents R1 and R2, R1 being methyl, cyclohexyl or phenyl and R2 being cyclohexyl or phenyl or the carbon atom of the aforesaid methyl group forms part of a cyclohexyl ring, the phenyl and cyclohexyl rings optionally being alkyl-substituted.  Polymerization may be effected with a free-radical catalyst.  Monomers specified are a -phenyl ethyl, a -cyclohexyl ethyl, diphenyl methyl, dicyclohexyl, cyclohexyl and 4-methyl cyclohexyl vinyl ketones.  Their preparation is described (see Group IV(b)).  In an example cyclohexyl vinyl ketone is polymerized in an aqueous solution of sodium metabisulphite and potassium persulphate, the polymer then being coagulated with aluminium nitrate.  According to the Provisional Specification, R1 and R2 represent alkyl, cycloalkyl or aryl, the same or different and an example describes the polymerization of isopropyl vinyl ketone.ALSO:The invention comprises ketones which are derivatives of methyl vinyl ketone wherein the methyl group bears two substituents R1 and R2, R1 being methyl, cyclohexyl or phenyl and R2 being cyclohexyl or phenyl or the carbon atom of the aforesaid methyl group forms part of a cyclohexyl ring, the phenyl and cyclohexyl rings optionally being substituted by alkyl. Examples are a -phenylethyl,a -cyclohexyl ethyl, diphenyl methyl, dicyclohexyl methyl, cyclohexyl and 4-methyl cyclohexyl vinyl ketones.  They are prepared by reacting gaseous ethylene with a cooled suspension of aluminium halide and the appropriate acyl halide in a halogenated alkane to give a beta-haloethyl ketone, which is dehydrochlorinated to yield the corresponding vinyl ketone.  In an example, ethylene is passed into a mixture of hexahydrobenzoyl chloride and AlCl3 in methylene dichloride at -20 DEG C. and the resulting b -chloroethyl cyclohexyl ketone is treated with triethylamine in ether.  The vinyl ketones may be polymerized.  According to the Provisional Specification, R1 and R2 represent alkyl, cycloalkyl or acyl radicals, which may be the same or different, and an example illustrates the preparation of isopropyl vinyl ketone.
Patent GB-474144-A (GB)
Title: Improvements in and relating to detachable soles and heels for boots and shoes
IPC: A43B21/44
Filed: 1936-01-23
Abstract: 474,144. Soles and heels. HEWSON, B. T. Jan. 23, 1936, No. 11035/37. Divided out of 474,071. [Class 17 (iii)] A detachable sole or heel consists of a plate a integral with or secured to the sole or heel and a plurality of pads f, h which together cover the sole or heel surface. The plate has a number of wedge-shaped apertures 11, each aperture having its apex towards the periphery of the plate and being undercut as at 12. Each pad f has a wedgeshaped, undercut, projection g adapted to fit into an appropriate aperture in the plate. The pads f are locked in position by the central pad h which has bevelled edges co-operating with the abutting edges of the pads f and is secured by a pin m engaging a spring-pressed stud n. Reference has been directed by the Comptroller to Specification 399,472.
Patent GB-878898-A (GB)
Title: Improvements in or relating to the polymerisation of ketones
Inventor: THOMAS PETER RAYMOND
IPC: C08F16/36
Filed: 1959-04-02
Abstract: Crystalline polyvinyl ketones are prepared by polymerizing a derivative of methyl vinyl ketone wherein the methyl group bears one, two or three methyl substituents or the carbon atom of the methyl group forms part of a cyclohexyl ring, which ring may optionally be substituted by alkyl, in the presence of a lithium or sodium alkyl, such as lithium methyl, ethyl or butyl.  The ketone may be ethyl, tertiary butyl or cyclohexyl vinyl ketone and polymerization is preferably effected in an inert organic liquid such as toluene, hexane, petroleum ether or tetrahydrofuran.  Filaments are obtained by spinning a solution of 12 parts by weight of poly (cyclohexyl vinyl ketone) in 100 parts by weight of chloroform into a coagulant bath consisting of 50 parts by weight of acetone mixed with 10 parts by weight of water.  Specification 843,611 is referred to.
Patent GB-636161-A (GB)
Title: Improvements in absorption refrigerating apparatus of the inert gas type
IPC: F25B33/00
Filed: 1948-04-23
Abstract: 636,161. Refrigerating. ELECTROLUX, Ltd. April 23, 1948, No. 11242. Convention date, May 7,1947. [Class 29] In absorption refrigerating apparatus of the continuous cycle inert gas type having a boiler unit comprising a heating tube 10 extending below the highest point of the liquid heat exchanger 12 and in heat conductive relation with a boiler tube 11 and a circulating pump 17 feeding a stand pipe 18 from the base of which a pipe 20 leads to an auxiliary pump tube 22 for transferring absorption solution out of the normal cycle, the tube 22 has an enlarged part 21 extending downwardly therefrom and receiving heat from the lower part of the tube 10. The pump device 21, 22 is enclosed in a closed evaporating-condensing system 23, 24, 25 and when it is desired to defrost the evaporator the part 25 is raised to empty the transfer medium into the part 23 so that heat can be transferred from the tube 10 to the part 21 to initiate the auxiliary pumping action.
Patent GB-925559-A (GB)
Title: Improvements in or relating to machines for perforating sheet material
Inventor: HOLTON HAROLD
IPC: B26F1/24
Filed: 1960-03-30
Abstract: 925,559. Punching-machines. F. & H. SOUTHERN AGENCY Ltd. March 29, 1961 [March 30, 1960; May 30, 1960], Nos. 11274/60 and 19108/60. Addition to 790,212. Class 31 (2). [Also in Group XVI] In a machine for punching breathing holes in thin plastic sheet material, the punching nip is formed by a feeding member 2, Fig. 1, having a resilient surface 15 and a punching roller 16 comprising pins 17 extending from a core 17a, the pins being interrupted by gaps 50, Fig. 3, at each of which there is an annular groove 51, Fig. 2, in the core 17a which is engaged by the peripheries 54 of a pair of spring-loaded rollers 41 rotatably mounted in a sub-frame 39 whereby the material is kept flat at the punching nip. The frame 39 comprises a number of triangular plates supported on rods 42 with each plate in alignment with one of the gaps 50 and is supported on a roller 32 and articulated by a link 40 to a pivot 40a on the machine frame. One or more expander bars 67, Fig. 4, are provided on the intake side of the punching nip and extend across the machine between adjacent gaps 50 or a multiple of such distance. The bar or bars 67 may replace or supplement an expander roller 21, such as described in the parent Specification, in which case the roller is held stationary and covered with material, e.g. a smoothly calendered paper, to form a guide. The material 22 leaving the punching nip is deflected and tensioned by means of a roller 56 and is also tensioned by expander bars 57, which are similar to the bars 67, extending across the machine between adjacent gaps 50. Rotary brushes 47, 47a are provided for brushing dust and debris from the material 22 and from the surface of the member 2, the brushed-away material being removed from a trough 54 by means of suction applied to a duct 55. Where a number of narrow strips each not wider than one section between two adjacent gaps 50 are being punched, there will be a skip 29 and a take-off roller 33 respectively feeding and receiving the strips to and from each of the expander bars 67, 57 and to ensure that each of these skips and take-off rollers remains in alignment with its expander bar, a block 60 loaded by a weight 61 is disposed at each end of the machine on rollers 34, 35 and, if necessary, between each of the skips and/or take-off rollers 33. A counter may be provided and driven from the feeding member 2 or the punching roller 16 which indicates the number of revolutions the punching roller has made since the leading edge of a strip to be punched was fed into the punching nip.
Patent GB-113784-A (GB)
IPC: H02K21/18
Abstract: 113,784. Akt.-Ges. Brown, Boveri, et Cie. Feb. 13, 1917. [Convention date]. Magneto-electric machines.-In ignition magnetos, the pole-pieces A, B of one pole of the stator and N, N of one pole of the rotor are subdivided and arranged in the axial direction in two groups side by side with a gap between, and the pole pieces C of the other pole of the stator and S of the other pole of the rotor are arranged opposite the said gaps, whereby the rotor is balanced statically, dynamically, and magnetically. The rotors shown in Figs. 2 and 8 are for use respectively with the stators shown in Figs. 1 and 6. In both cases, the yoke carries the induction winding and the rotor consists of a permanent magnet. Specification 112,926 is referred to.
Patent GB-1459268-A (GB)
Title: Function generator
IPC: G06G7/28
Filed: 1974-03-14
Abstract: 1459268 Function generators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 March 1974 [30 March 1973] 11435/74 Heading G4G An electric analogue function generator provides an output current I o  by piecewise linear synthesis of functions of an input current I in  each segment of the function being derived by one of a plurality of sections 1, 2, 3 each of which receives I in  through an input 13 and can deliver an output current equal to the input current multiplied by a constant A (which is the slope of the relevant segment) added to a reference current level I y  defining the start point level of the segment. The section appropriate to the input level is determined by comparison with a respective reference current I x  in each section. If I in -I x  is greater than zero in, say, section 2 then that section becomes operative and also sends an inhibiting switching signal through S and B to section 1 to turn the latter off. Thus only the output current signal generated by section 2 is fed to the generator output 12. A single section of the function generator is described at length with reference to a block diagram and a practical circuit, Figs. 2 and 3 (not shown), including current sources (17, 22) which provide a current equal or proportional to I in  to one input (32) of a differential amplifier circuit (33) which is equal to I in -I x , I x  having been introduced at (23). A current source (35) is connected to the other input (34) of the circuit (33) and the multiplying factor A is adjusted through (R2). A switching circuit (24) provides the inhibiting signal for the preceding section by measuring the input at (32) to detect when the input current is present. A circuit (96) is provided so that a single section can provide an output consisting of a portion of positive or negative slope followed by a horizontal section. Circuit (41) is for the reception of an inhibiting signal from a succeeding section when the latter is operative with the effect of turning transistor (87) off thus preventing any current reaching the section output 10.
Patent GB-702272-A (GB)
Title: Improvements in or relating to plain bearing or like sliding elements
IPC: F16C33/14
Filed: 1950-05-08
Abstract: A bearing, crankshaft journal or like element has a sliding surface of brass coated with a soft metal or alloy by dipping into a liquid salt melt containing a salt of the soft metal or salts of the alloy components.  Soft metals referred to are tin, lead, gallium, bismuth, antimony, cadmium, zinc, thallium, indium, silver and gold, alone or in combination.  The coating may comprise two layers of different soft metals.  Specification 544,153 is referred to.
Patent GB-1314148-A (GB)
Title: Containers
IPC: B65D5/28
Filed: 1972-03-13
Abstract: 1314148 Nestable containers AKERLUND & RAUSING AB 13 March 1972 [16 April 1971] 11616/72 Heading B8P A container has lugs 7 on at least two opposite walls to prevent jamming when the containers are nested. The container is folded up from a blank comprising a base and side walls extending therefrom and has a plastic sheet 8 drawn into the erected container to form a lining. The lining adheres to the container walls by a binding agent activated by the heat of the drawing operation and keeps the side walls in their erected position. Flaps 6 on two opposite walls overlap adjacent walls of the erected container.
Patent GB-793082-A (GB)
Title: Improvements in machines for producing filter mouthpiece cigarettes
IPC: A24C5/47
Filed: 1956-04-17
Abstract: 793,082. Uniting cigarettes and mouthpieces. KÍRBER, K. April 17, 1956 [May 16, 1955], No. 11632/56. Class 130. The pivot-pin 2, of a spring-loaded element 1 for folding connector sheets about cigarette and mouthpiece assemblies as in Specification 731,861, is retained in grooves 5a of an element carrier 4 by blade springs 6a so that the pin 2 and the element 1 and its springs 3b, 3c are removable as a unit. The springs 3b, 3c bear in slots 7a, 7b and may be joined at 3a. Ears 8 of the springs 6 prevent axial movement of the pin 2 when mounted. In Fig. 2 (not shown), the carrier has a single central groove and blade-spring, the pin bearing at its ends in the element which has spring plunger means, or whose end feces have rotatable or displaceable blade spring means, to prevent undesired axial pin movement. Such means may also replace the ears 8 in Fig. 1.
Patent GB-527655-A (GB)
Title: Improvements in methods for joining the parts of articles of rubber or the like
IPC: B29C65/18
Filed: 1939-04-18
Abstract: 527,655. Joining parts of rubber, synthetic resins &c. FRANKMANN, H., and VOHL, M. April 18, 1939, No. 11676. [Class 70] [Also in Group IV] Surfaces of rubber, synthetic resin, or other fusible material are joined together by pressure of a heated metal form of the shape of the joint. The parts may be supported on a similarlyshaped form which may also be heated. In making hot-water bottles, air - cushions &c., of rubber which may be covered with fabric, the parts may be stitched together before being submitted to heat and pressure. In treating vulcanized or partly vulcanized rubber, the surfaces may be dusted with a powder such as zinc stearate which melts before the rubber and the metal parts may be dusted with a powder to prevent adhesion.
Patent GB-1418142-A (GB)
Title: Ventilators
IPC: F16K1/22
Filed: 1973-03-12
Abstract: 1418142 Ventilators SMITHS INDUSTRIES Ltd 8 March 1974 [12 March 1973] 11739/73 Heading F4V A ventilator for mounting in a motor vehicle, ship or aircraft comprises a tubular housing 10, a ring 16 mounted in the housing for angular displacement about the longitudinal axis of the housing and a disc 21 pivotally mounted on the ring 16 to control the direction and rate of air flow from the ventilator. The housing comprises a first member 12 having a flared end portion 14 with longitudinally extending slots 30 and a second member 13 which is a snap fit on portion 14. The ring 16 is received in a groove formed by flanges 26, 17 on member 13 and abuts the free end of the end portion 14. The ring 16 may include axially displaceable portions (24, Fig. 6) whereby the effective thickness of the ring is variable. The ventilator components are plastics mouldings.
Patent GB-455482-A (GB)
Title: Improvements relating to joints between materials having different thermal coefficients of expansion
IPC: H01J5/20
Filed: 1936-04-24
Abstract: 455,482. Glass manufacture. AKTIEBOLAGET HAMMARBYLAMPAN, Stockholm. April 24, 1936, No. 11742. Convention date, April 25, 1935. [Class 56] [See also Group XXVIII] A method of uniting bodies of materials having different coefficients of expansion consists in welding each body to a metal member having substantially the same coefficient of expansion as the material of the body, and then joining the metal members together by any suitable means. The method is intended particularly for joining bodies of glass, quartz, or ceramic material, such as parts of electric lamps or discharge tubes. For example, a glass tube 1 can be joined to a tube 7 of another kind of glass by welding the tubes to metal collars 3, 5, respectively, which are joined at 4 by welding, soldering, or other suitable means. Reference has been directed by the Comptroller to Specification 411,221.
Patent GB-1155831-A (GB)
Title: Improvements in or relating to Electric Convertors
Inventor: WOODWARD WILLIAM HENRY
IPC: H02M3/137
Filed: 1965-03-19
Abstract: 1,155,831. Converters. THORN AUTOMATION Ltd. 20 June, 1966 [19 March, 1965], No. 11795/65. Heading H2F. A static converter arranged to connect an output terminal 9 to two different supply terminals 3, 4 so as to sample the supply voltages alternately at a frequency so high that the output current remains nearly constant over a number of cycles comprises: a primary commutating stage 1 arranged to produce, at point 2, a primary output voltage which swings between the supply voltages; and at least one secondary stage 6 connected to the primary stage output, and comprising reversely connected controlled rectifiers TH2, TH3 and TH1, TH4 one of which carries the load current during a portion of any forward-voltage sampling interval, and is reset by the voltage swing of the primary stage output at the end of each forward voltage sampling interval. Assume initially point 2 is connected to line 4, thyristors TH1-TH4 are all off, and load current is drawn from terminal 4, which at this instant constitutes the "reverse-voltage" terminal. If thyristors TH1, TH2 are fired " forward-voltage " is applied to load terminal 9 from terminal 3 via these two thyristors. At the point in the cycle where the primary circuit reverses, the positive swing at point 2 extinguishes TH1, and the load current flows from point 2 through D1, TH2, D3 until the end of the cycle. At this point the primary output voltage at point 2 again reverses to extinguish TH2. During instants when terminal 3 is the " reverse-voltage " terminal, similar conditions obtain, but with TH3, TH4 firing. A number of output stages are connected to the primary stage to provide a polyphase output. In a modification, Fig. 3 (not shown), the primary stage is arranged to have a pushpull output (5a, 5b) and the thyristors are connected to it in a bridge arrangement.
Patent GB-567048-A (GB)
Title: Electric welding machines
IPC: B23K11/00
Filed: 1943-07-20
Abstract: 567,048. Welding wire fabrics. TAYLOR, B. July 20, 1943, No. 11802. [Class 83 (iv)] In an electric welding-machine having a series of movable electrodes 4 co-operating with a series of fixed electrodes 3, particularly for welding the inter-sections of the cross 2 and longitudinal wires 1 of a reticulated steel wire fabric, the movable electrodes 4 are operated by a toggle mechanism, the knuckle of which is operated by a, series of cams 12 carried on a wheel 13 driven in synchronism with the wire feed mechanism. The electrodes 4 are carried by spring-returned stems 7 moving in guides 5, 6 and connected to the lower links 8 of the toggles, the upper links 9 of which are jointed to an adjustable fixed abutment 10. The roller 11 of the toggle is engaged by the series of cones 12 on the wheel 13 which is driven by a shaft 23 and bevel wheels 14, 15 in synchronism with the mechanism for feeding the wires 1 through the machine. The wheel 13 carries electric contacts 16 which engage members in electric circuit with the movable electrodes to put in the welding current when the wires are engaged by the electrodes. The pressure is adjusted by an adjustable spring 19, contained in a fixed casing 20 and engaging a plunger 18 connected to the abutment 10.
Patent GB-576095-A (GB)
Title: Improvements in or relating to laminated transparent window structures and windshield constructions, and mounting means therefor
IPC: B32B17/10
Filed: 1942-08-22
Abstract: 576,095. Compound transparent sheets. LOCKHEED AIRCRAFT CORPORATION, and STEVENS, A. H. Aug. 22, 1942, No. 11845. Addition to 556,035. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 4, 1943.] [Class 140] [Also in Group X] In compound glass as described in the parent Specification having an interlayer of polyvinyl butyral or similar plastic material projecting beyond the margins of the layers of glass, the projecting edge (a) is made thicker than that portion of the inter layer between the glass sheets and/or (b) extends in overlapping relationship around the margin of one or more of the glass layers. The glass sheets may be replaced by other hard transparent material, e.g., polymerized acrylic acid esters, The thickened edge 16, Fig. II, of the plastic interlayer uniting glass sheets 43 and 47 extends around the edge of the larger sheet 47 as at 48, and facilitates clamping the compound sheet between the outer skin 41 of an aeroplane fuselage and an inner frame 42. The gap between the skin 41 and the glass surface 43 may be filled with a plastic composition, or a rib moulded integrally with the plastic interlayer. Alternatively a plastic layer 114, Fig. VII, uniting sheets of glass 113 is built up around the edges of the glass sheets 113 to form a U-shaped channel enclosing and bonded to the edges of the sheets, whereby the laminated sheet may be resiliently clamped between an outer frame member 119 to which the skin' of the fuselage is secured and an inner frame member 121. The outer part of the channel may be extended to cover the whole outer surface of the glass 113 with plastic material 117 to which an outer glass pane 118 is secured, flush with the skin of the fuselage. A laminated transparent sheet 215, Fig. XIV; may be assembled face to face with a second laminated sheet 219 and/or with one or more sheets of hard transparent material 216 such as a polymerized acrylic ester to form windows with single or double dead air spaces 220, 221 enclosed between the transparent panes, the panes being spaced apart by resilient plastic extensions 217 of the interlayers 218 of the laminated sheet or sheets, and also in some cases by non-resilient plastic strips or metal frame members, The resilent plastic extensions of the interlayers may be bonded by a polyvinyl resin adhesive, and may contain one or more reinforcing strips 224 of inextensible material such as aluminium or an alloy which may extend between or outside the glass laminations of either laminated glass sheet. The multiple glazed pane may be secured by bolts 223 to a channel 222 bolted to the fuselage.
Patent GB-200261-A (GB)
Title: Improvements in laying-on devices for printing machines
IPC: B65H9/06
Filed: 1922-04-27
Abstract: 200,261. Schleifenheimer, E., and Schleifenheimer, G. April 27, 1922. No Patent granted (Sealing fee not paid). Sheet-registering devices.-To allow sheets to be fed by hand quickly to a printing-machine, the front stop a is used in conjunction with an auxiliary stop c which is projected through an opening in the guide b when the stop a is moved by the movement of its shaft f to the position shown in dotted lines. As soon as a sheet is taken by the cylinder grippers, the next sheet can be registered against the stop c before the return of the stop a. Each sheet is finally registered by the stop a.