baber/WOPTO huggingface dataset:
Patent GB-1169994-A (GB)
Title: Extruded Matte Finish Acrylic Film
IPC: B32B27/00
Filed: 1967-02-21
Abstract: 1,169,994. Extruded matte finish acrylic sheet; laminated acrylic sheets. ROHM & HAAS CO. 21 Feb., 1967 [24 March, 1966], No. 8245/67. Headings B5B and B5N. Acrylic sheet or flattened film having a matte finish is made by extruding through an annular orifice in the normal way for blown film, a thermoplastic acrylic polymer having a melt index of 0À1 to 3 and a glass transition temperature (g.t.t.) of 30‹ to 80‹ C. The polymer may be a homopolymer of a C 2  to C 4  alkyl methacrylate or a copolymer of a C 1  to C 4  alkyl methacrylate with a C 1  to C 8  alkyl acrylate. The sheet or film having a matte surface may be laminated to metallic and non-metallic substrates such as other plastics sheet or shaped articles by application of heat and pressure to the sheets placed face to face. The film becomes clear on laminating. In an example, (1) a 64% methyl methacrylate-36% ethylacrylate copolymer of melt index 2 and g.t.t. 46‹ C. is blown at 450‹ F. to give a film with a matte finish on both sides. This film is laminated on both sides with polyvinyl chloride to give a clear laminate with a smooth high gloss surface.
Patent GB-609756-A (GB)
Title: Method of producing ammonia from hydrogen and nitrogen
IPC: C01C1/04
Filed: 1946-03-18
Abstract: In the production of ammonia from nitrogen and hydrogen, a catalyst consisting of a mixture of nickel and magnesium is employed at a temperature not above 300 DEG  C., e.g. at 270-300 DEG  C. Reference is made to the use of pressures of 100 and 300 ats., and to a 75 per cent Mg-25 per cent Ni catalyst.  The Specification as open to inspection under Sect. 91 refers to the use generally as catalysts of nitride- and hydride-forming catalysts, additionally specifying the metals sodium, potassium and palladium.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1097464-A (GB)
Title: Lincomycin derivatives
IPC: C07H15/16
Filed: 1965-02-26
Abstract: The invention comprises (a) 3,4-isopropylidene-lincomycin and its mono- and diacylates and (b) lincomycin 2,7-diacylates, the above acyl groups being derived from acids having less than 12 carbon atoms; (c) acid addition salts of any of the above; and (d) a process for preparing lincomycin 2- or 7-monoacylates or 2,7-diacylates, the aryl groups being as defined above, by conversion of lincomycin to its 3,4-acetonide, acylation and hydrolysis.  The 2,7-diacylates of the invention have antibacterial activity and may be used in animal or poultry feeds or drinking water.ALSO:Disinfectant compositions comprise, in combination with a acid, a 2, 7-diacylate of lincomycin wherein the acyl groups are derived from acids having not more than 12 carbon atoms.
Patent GB-1420478-A (GB)
Title: Composite construction sections of wooden material
IPC: E04C3/36
Filed: 1973-02-21
Abstract: 1420478 Forms of wood T N NILSEN 21 Feb 1973 [29 Feb 1972] 8558/73 Heading B5L [Also in Divisions E1-E2] A frame member, beam or wall stud of I- or other webbed section is made up of interconnected flat elongate strips of a reconstituted wood material, e.g. wood fibre board or wood chip board.
Patent GB-380734-A (GB)
Title: An improved balanced valve
IPC: F16K39/02
Filed: 1932-03-22
Abstract: 380,734. Fluid-actuated valves. WAGNER, F., 10, Bahnhofstrasse, Lichterfelde-Ost, Berlin. March 22, 1932, No. 8561. [Class 135.] In a valve for locomotive regulating valves &c. comprising a main valve 5 formed integrally with a piston 6, an auxiliary valve 12 operated by a spindle 13, and a pressure chamber 8 communicating with the fluid inlet 10 by means of apertures 9 and with the fluid outlet by means of a passage 11 controlled by the auxiliary valve, throttling devices are arranged between the inlet 10 and the main valve seat 2 and in the passage 11. The former throttling device consists of a narrow annular gap 15 formed between the valve 5 and a lower casing member 3. The latter throttling device consists of a substantially conical member 14 secured to the valve 12. When the auxiliary valve 12 is closed, the fluid pressure on the piston 6 is insufficient to open the main valve, but with the valve 12 open, fluid leaves the chamber 8 at a greater rate than it enters and the fluid pressure under the piston 6 and the main valve 5 is sufficient to raise the latter. Due to the throttling by the passage 15, the pressure below the valve 5 is not so great as to cause the main valve to strike the auxiliary valve. Any acceleration of the valve 5 relative to the valve 12 causes the member 14 to throttle the passage 11 so that pressure is built up in the chamber 8 and the acceleration of the valve 5 is checked. Thus the valves 5, 12 tend to move at the same speed. Throttling is produced by heart-shaped apertures 16 when the valve 5 is raised above the member 3, the apices of which apertures are directed downwardly. A collar 17 limits the travel of the valve 12 and enables valve 5 finally to be lifted clear of the fluid passage. Specifications 19898/08, 19913/11, 237,435, 262,863, and 263,035, [all in Class 135, Valves &c.], are referred to.
Patent GB-720855-A (GB)
Title: Improvements in spectacles
IPC: G02C1/04
Filed: 1953-03-27
Abstract: 720,855. Spectacle frames. LISSAC, G. March 27, 1953 [April 5, 1952; Feb. 28, 1953], No. 8571/53. Class 97 (1). In spectacles having a main bar extending along the upper edges of the lenses and carrying temple hinges at the outer ends, each lens or each lens rim is attached to a 'torsion-bar secured to the main bar at least at two points lying on opposite sides of the point of attachment of the lens or rim to the torsion bar so that the latter may twist for adjustment or the absorption of shocks. As shown in Fig. 1, a lens 1 is secured at 2, 2<SP>1</SP> by pins or other means to a torsion bar 3 secured as by soldering at the points 4, 4<SP>1</SP> to the main bar 5. The points 2, 2<SP>1</SP> may be respectively nearer the points 4, 4<SP>1</SP> and the nose-pad arm 9 may be formed, as shown, as an extension of the bar 3 or separately secured to the main bar 5. Alternatively the bar 3 may be divided between the points 2 and 2<SP>1</SP> and the divided ends separately secured to the bar 5. In a further modification the attachment part 4<SP>1</SP> is provided by an apertured lug in which the end of the bar 5 is free to slide. To support the lens below the bar 5 the torsion bar 3 may have downward extensions 13a, 13<SP>1</SP>a, Fig. 11, to which the lens is secured at 2c and 2<SP>1</SP>c, the bar 3 being secured to the bar 5 at points 4, 41 and, if desired, 10. Alternatively the portions 13a, 13<SP>1</SP>a may be formed on separate bars, or the bar 3 have only one central downward extension to which the lens or lens rim is secured.
Patent GB-1104154-A (GB)
Title: Selective gearing arrangement for hobbing gears and milling threads
Inventor: BRADNER JOHN ALEXANDER
IPC: B23G1/32
Filed: 1965-03-01
Abstract: 1,104,154. Gear-hobbing and thread-milling. LEES-BRADNER CO. 1 March, 1965, No. 8630/65. Heading B3K. A machine tool selectively convertible for use as a hobbing machine and for thread milling comprises a tool spindle for receiving a selected cutter 18 thereon, a main drive-shaft 21 having a releasable drive connection 21a, 21b with the input 33 to a rotatable housing lead differential L, a first motor 102 for driving the spindle and drive-shaft, a first index gear train 49-50 for delivering the output of the lead differential to a work spindle 55, a rotatable housing traverse differential mechanism T, a second gear train 57, 59, 61 having a drive input to the traverse differential T, a further gear train 69-70 having driving connection only, when closed, with a lead-screw 66 and with the rotatable housing of the lead differential and a second motor 92 for effecting a driving connection to the rotatable housing of the lead differential when the further gear train is open. When the machine is used for hobbing, the hob 18 is rotated by the variable-speed hydraulic motor 6 mounted on a swivelling hob-head. The motor also rotates the work-spindle 55 through the shaft 21 and the differential L. The drive gear 57 meshing with a gear on the work-spindle rotates the lead-screw 66 through a differential T to traverse the hob across a workpiece. A rapid traverse can be imparted by releasing a brake 79 and permitting a motor 77 to drive a worm 47 geared to the differential T. When the machine is used for thread-milling, belt-drives to the motors 92 and 102 are connected up and a gear 71 or 74 is disengaged to allow the rapid traverse motor 92, having an associated brake 93, to rotate a worm 45 geared to the differential L. Also, a lever 99 is moved to disengage the drive-shaft 21. The drive to the work-spindle 55 is then supplied by the motor 102, the motor 6 becoming merely a driving motor for a cutter (18<SP>1</SP>). To re-cut a thread, the cutter can be matched up to the cut thread by rotation of a hand wheel 107.
Patent GB-116551-A (GB)
Title: Combination Treasury Note and Letter Case.
Inventor: HARRIS CHARLES
IPC: A45C1/06
Filed: 1917-06-18
Abstract: 116,551. Harris, C. June 18, 1917. Purses, wallets, &c.-A letter-case B is made with its back continuous with one portion of a Treasury-note case A, the other portion of which is connected up by trapping-tapes, as shown, so as to open and close towards and away from the letter-case. The letter-case is fitted with card and stamp compartments.
Patent GB-1121252-A (GB)
Title: An improved heat exchanger
Inventor: BUTT ALAN GEORGE
IPC: F28D9/00
Filed: 1967-02-23
Abstract: 1,121,252. Plate type heat exchanger. TRANE CO. 23 Feb., 1967, No. 8732/67. Heading F4S. A parallel plate heat exchanger 10 comprises a stack of plates 12 sealingly arranged in spaced relationship to define fluid passages 16 and 22 for passage through the exchanger of first and second fluids respectively in which the sealing means for the passages 16 includes a closed duct 44 through which a third heat exchange fluid may be passed, said duct being in fluid communication with an adjacent passage 22 for admixture of the second and third heat exchange fluids at the inlet 34 thereof. Sealing bars 30 form the sealing means for the fluid passages 22 and are so arranged to provide inlets 34 and outlets 36 for the second fluid which is normally a gas. Passages 16 are provided with a second group of sealing bars 31 arranged to define inlets 21 and outlets 19. One of the bars 31 designated by numeral 42 and positioned adjacent the inlet 34 of the adjoining fluid passage 22 is provided with a longitudinally extending duct 44 having apertures 50 for introduction of the third heat exchange fluid which is normally a liquid. This liquid flows through an outlet 55 in the bar 42 into the inlet 34 for admixture with the second fluid entering inlet 34 from a header 24. Finned sections, e.g. 38, 39, 40 and 41 which may be brazed to the plates 12 are interposed in the passages 22 to evenly distribute the fluid flow through the heat exchanger, the finned sections 40 being perforated to permit transverse passage of the fluid therethrough. Other forms of sealing bar 42 may be employed (Figs. 5 and 6). The bar may be a single hollow extruded member having either an elongated slot (62, Fig. 5) or a plurality of longitudinally spaced bores (66, Fig. 6) for the passage of liquid to the inlet 34.
Patent GB-748544-A (GB)
Title: Improvements relating to apparatus for cutting materials by electric sparks
IPC: B23H7/18
Filed: 1952-04-07
Abstract: 748,544. Automatic electrode control systems. METHOD X CO. April 7, 1952 [July 20, 1951; Nov. 2, 1951], No. 8818/52. Class 38 (4). [Also in Groups XXII and XXXVII] In apparatus for cutting a workpiece 10, Fig. 1, by electric sparks including an electrode 12, a condenser 13, a charging impedance 18, 19 and a direct current generator 17, a reversible motor 22 for adjusting the electrode towards and from the workpiece is supplied by a generator 23 the polarity and voltage of which are responsive to any two of the following parameters : (a) the voltage between the electrode and the workpiece, (b) the voltage across the impedance, and (c) a substantially constant voltage. The generator 23 is driven at constant speed by a motor 24 and may be a dynamoelectric amplifier or an ordinary direct-current generator having two separate opposing field windings 25, 26 which are independently excited by the voltage Ew across the gap and the voltage Ex across the impedance. Potential dividers 27, 28 are included in the circuits of the windings 25, 26 the net magneto-motive force of which determines the polarity and magnitude of the voltage developed by the generator 23. The variation in voltages with gap spacing is shown in Fig. 6, and the apparatus is adjusted so that winding 25 is dominant and the motor 22, which is provided with a continuously-energized field and has its armature connected to the generator 23, feeds the electrode towards the workpiece at a rate which is just sufficient to compensate for erosion. Arc formation or clogging of the gap produces a sharp increase in current in the winding 26 with resulting reversal of the electrode until the arc is extinguished or the gap cleared. One of the potential dividers 27, 28 may be supplied with a constant voltage E by connecting it across the generator 17. Fig. 4 shows a modification in which the voltages proportional to the two parameters are applied in opposition to a single winding 37 one end of which is connected to a rheostat 38 to receive a voltage proportional to that across the impedance while the other is connected to a divider 27 and a generator 39 supplying a constant voltage opposed to that from the impedance. The generator 39 may be omitted and the constant voltage obtained from the generator 17. Specification 748,543, [Group XXII], is referred to.
Patent GB-554784-A (GB)
Title: Improvements in swivel joints for frame structures
IPC: A47C20/08
Filed: 1942-06-30
Abstract: 554,784. Swivel joints, LUNDQUIST, C. E. E. June 30, 1942, Nos. 8990 and 8991. Convention dates, June 21, 1941, and June 1, 1942. [Class 65 (ii)] A swivel joint for frame structures, such as chairs, comprises hubs 5, 7 attached to parts 2, 4 of the chair &c. and a hub 6 attached to another relatively rotatable part 1, the hubs being mounted on a pivot pin 8 and adapted to be moved axially by a cam lever &c. so that teeth 5a, 7a, on 5 and 7 engage teeth 6a on 6 to lock the joint. When the cam level is moved to unlock the joint, springs 11 force the hubs apart, and brake members 12 acting peripherally on the hubs 5,7 then prevent relative rotation of the joint members unless force is applied to the members 1, 2, 4. The brakes 12 may be in the form of springs and may have axial projections 13 engaging abutments 14 in the, hub 6. The teeth 5a, 6a, 7a may be of triangular section having their apices bevelled in both directions from the centre obliquely towards their bases. In another form the brakes are springs coiled into peripheral engagement with the hubs 5, 7.
Patent GB-308268-A (GB)
Title: Improvements in or relating to re-inforced concrete constructional elements
IPC: A01G9/20
Filed: 1929-03-20
Abstract: 308,268. Lefevre, A. H. March 20, 1928, [Convention date,]. Knock-down boxes.-Boxes and the like are formed of concrete elements some having posts 7 with angle-shaped recesses 5 at their ends, while others 3 have interlocking angle-shaped lugs 6. Positioning lugs 8 may be cast on the upper ends of the posts 7.
Patent GB-617425-A (GB)
Title: Improvements relating to electric follow-up control mechanism
IPC: G05D3/12
Filed: 1946-03-23
Abstract: 617,425. Electric follow-up systems. PRECISION DEVELOPMENTS CO., Ltd., and OLAH, G. March 23, 1946, Nos. 9032 and 37743. [Class 40 (i)] A reversible servomotor arrangement has a brake which is released during operation by two of three windings, one in parallel with the armature and the others each in parallel with one of the field windings. A controlling member 15 is attached to a spindle 11 carrying two toothed wheels 9, 10, insulated from each other and connected through brushes 7, 8 to opposed field windings 4, 5 respectively, and thence through the armature 1 to mains lead A. A loosely meshing gear 13 is mounted on the controlled shaft 14 and electrically connected through brush 12 to mains lead B. When member 15 is moved from rest in either direction, one or other gear 9, 10 touches gear 13 and completes a circuit through the appropriate winding 4, 5 to drive the motor in the corresponding direction. Controlled member 16 thus follows member 15 until the latter stops and gears 9, 10, 13 break the drive circuit. A friction brake 18 normally holds the motor shaft 14, but may be released by windings 20, 21, 22 connected in parallel with windings 5, 4 and the armature respectively. With this arrangement, release of the brake is always effected by two windings in series, which between them have the full mains voltage across them, irrespective of the actual voltage drop across the armature and field individually Specification 556,287 is referred to.
Patent GB-261252-A (GB)
Title: Improved means for mounting driving pulleys on shafting
IPC: F16H55/36
Filed: 1926-04-06
Abstract: 261,252. Smith, W. Prince-, and Waterhouse, D. April 6, 1926. Pulleys.-An overhung shaft 13, carrying fast and' loose pulleys 35, 20, is supported at two points by an adjustable bearing- bracket 3 adapted also to support, the loose pulley 20 directly. The part 3 is laterally adjustable on a vertically-adjustable bracket 2, and is formed at one end with a housing 8 for a selfaligning or other antifriction bearing 10, and at the other end with a split housing 9 supporting a fixed sleeve 15, which has clearance from the shaft 13 and carries, preferably on a bush 16, the loose-pulley hub 17 The outer end 22 of the sleeve 15 is enlarged to accommodate a ball bearing 24, the inner race 25 of which is held by the fast-pulley hub 32 against a shoulder 27 of the shaft, a washer 26 preferably being interposed, while the outer race 23 is secured by a flanged end cover 28. Lubricating-passages 21, 38 are provided. The housing 9 may project into the hub 17 to afford further support. The pulley rims are detachably secured to webs 18, 33 on the hubs 17, 32, in order that they may be interchanged with rims of other sizes without dismounting the hubs.
Patent GB-454018-A (GB)
Title: Improvements in cutting blow-pipes
IPC: F23D14/46
Filed: 1935-03-22
Abstract: 454,018. Blowpipe burners. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on- Main, Germany. March 22, 1935, No. 9043. Convention date, March 22, 1934. [Class 75 (i)] A metal-cutting blowpipe is provided on the burner head or nozzle close to the orifice with a fixed or movable spur of heat-resisting metal such as tungsten. Cutting may thus be effected in corners difficult of access. The spur S may be rigidly inserted in the nozzle, Fig. 1, or may be carried by a ring or part ring secured to the nozzle. In cutting off a flange from an angle bar, auxiliary spurs H may be used in addition. Specification 14336/07, [Class 75], is referred to.
Patent GB-645403-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T13/52
Filed: 1947-04-03
Abstract: 645,403. Sparking plugs. SMITS, W. B. April 3, 1947, No. 9091. Convention date, Feb. 14, 1939. [Class 7(iv)] In a surface discharge sparking plug comprising two spaced electrodes 1, 2 and a body 3, of such material as porcelain, mechanically connecting but electrically insulating the electrodes so as to provide an end face across which the sparks sweep, the body 3 has an exposed surface layer 4 of material having an electrical resistance less than that of the remainder of the body, the layer being formed by the incorporation therein of electrically conducting particles, such as platinum produced, for example, by burning a solution of chloride of platinum in oil into the porcelain; the layer may be produced by heating such substances as oxides of alkaline earth metals or any high melting point organic substance which readily carbonizes, for example, asbestos may be used as the insulator whilst a solution of copal resin in petrol is applied to the end face of the asbestos ; the layer may also be produced by coating the end face of the insulator with a silicate, such as enamel, which on becoming heated in the engine cylinder absorbs carbon particles from the combustion process. Specification 483,383 is referred to.
Patent GB-1493831-A (GB)
Title: Brakes
IPC: F16D65/14
Filed: 1974-02-28
Abstract: 1493831 Internal shoe drum, and trailer, brakes L C CHOUINGS 3 Jan 1975 [28 Feb 1974] 9197/74 Heading F2E In an internal shoe drum brake including torque limitation means so that when the brake is operated by an actuator 10, Fig. 1, the torque in one direction of drum rotation (e.g. R) is limited to a value lower than that in the other direction, F by reduction of a clearance 22, the torque limitation means comprises a lever 23 mounted to pivot at 25, 26 with respect to a fixed part, 17, of the brake and engaged either directly or through a strut 27, with each of the ends 15, 16 of the shoes 13, 14, the engagement of the lever with these ends (pivot 24 and end 28 of strut 27 respectively) being at different radii about the lever pivot 25, 26, the lever 23 being biased (e.g. by spring 33) to a position which it takes up when the shoes are in their inoperative positions (as shown). During forward braking F reaction forces from shoe 13 are applied through pivot 24 to lever 23 causing it to pivot on surfaces 25, 26 and transmit an amplified force to shoe 14 to maintain clearance 22. During reverse braking R the reaction forces from shoe 14 act on lever 22 via shut 27 and overcome those from shoe 13 acting through pivot 24. The lever consequently pivots anti-clockwise and clearance 22 is reduced or eliminated. For parking, an actuating mechanism of increased travel eliminates the clearance. A wedge-type wear adjuster (Figs. 2 and 3, not shown) is provided for adjusting the positions of the shoe abutments, the wedge having faces at different angles so as to move the abutments unequally for a given wedge movement. Specification 1,456,663 is referred to.
Patent GB-1358477-A (GB)
Title: Method of producing sigma-aminolevulinic acid hydrochloride
IPC: C07D263/42
Filed: 1972-02-29
Abstract: 1358477 #-Aminolevulinic acid hydrochloride INSTITUT ORGANICHESKOI KHIMII IMENI ND ZELINSKOGO AKADEMII NAUK SSSR 29 Feb 1972 9221/72 Heading C2C #-Aminolevulinic acid hydrochloride is prepared by reacting hippuric acid with succinic acid monomethyl ester mono-chloride in γ- picoline to produce 2-phenyl-4-(#-carbomethoxypropionyl) - oxazolin - 5 - one, and hydrolysing the latter with hydrochloric acid.
Patent GB-127952-A (GB)
Title: Improvements in Apparatus for Making Tea or other Infusions Heating Liquids and Cooking Foods.
Inventor: FRANCIS SIDNEY WILFRED
IPC: A47J31/40
Filed: 1918-06-05
Abstract: 127,952. Francis, S. W., Francis, A. V., and Barkway, W. J. June 5, 1918. Fixed-chamber apparatus; for granular material. - A device for measuring tea in amounts sufficient for one or some other definite number of cupfuls comprises a hopper provided at the bottom with a slide f and a hinged door h. A stirrup f<1> on the slide f holds the door h closed as long as the slide is open and allows it to fall open when the slide is closed, the space between the slide and the door constituting the measuring- chamber.