baber/WOPTO huggingface dataset:
Patent GB-801354-A (GB)
Title: Improvements in or relating to rotary duplicating machines
IPC: B65H29/16
Filed: 1955-03-02
Abstract: 801,354. Sheet-delivery apparatus. RITZERFELD, W., and RITZERFELD, G. March 2, 1955, No. 3266/58. Divided out of 801,353. Class 100(1) A rotary duplicating machine comprises a counter pressure roller and a printing drum, two delivery members for ejecting printed copy-sheets into a guide and a plurality of collecting containers, electric or magnetic means being provided for setting control means for enabling delivered sheets to reach a selected container. The copy sheets are printed between the printing drum 1 (Fig. 3) and impression roller 2 and delivered between roller 31 and a plurality of resiliently mounted rollers 32, the roller 31 being driven by toothed wheels 54, 55...57 at a higher peripheral speed than that of the drum 1. The sheet is delivered into a channel formed by guides 35, 36. The printed sheet is then selectively diverted into one of a plurality of receivers 74-79 by deflector plates 69-73 which deflect the sheet from the guide into the selected container. The selection of an appropriate receiver may be effected automatically by providing the copy sheets with perforations or marks which are sensed by sensing members. The deflector plates, as 71 (Fig. 4) are operated by relays, as R3, which are energized in accordance with the position of the perforation or mark sensed by the sensing members. If e.g. the relay R3 is energized a locking lever 67 is withdrawn from contact with a lever 68 on the plate 71 so that the latter is pivoted under the action of a spring connected to the lever 68. After each sheet has been delivered the deflectors are reset by means of pins, as 88, on a link member which is reciprocated through a further linkage operated by a cam fixed on the shaft of the drum 1. A further cam on the drum 1 operates a switch to de-energize the relay R3 so that when the lever 68 is rotated anti-clockwise by the pin 88 the locking lever 67 is again in position to hold the deflector plate 71 in the position shown in Fig. 4. In a further embodiment, Fig. 6, the electric sorting device is arranged horizontally and the sheets are delivered thereto by belts 93 which, co-operate with rollers 32. Instead of the cards being sensed by the members M1-M6, manually operated control keys H1-H6 may be provided for energizing the relays R1- R6.
Patent GB-875350-A (GB)
Title: Improvements relating to valve gear for internal combustion engines
IPC: F01L1/18
Filed: 1960-01-29
Abstract: 875,350. Valve-gear. DAIMLER-BENZ A.G. Jan. 29, 1960 [Feb. 3, 1959], No. 3286/60. Class 7(6). In an overhead valve engine, a valve lever 13, Fig. 1, is universally pivoted on a vertically adjustable ball-head 12, and a plane 18 containing the pivot point 19, the centre of curvature 17 of the contact surface 16, and the valve stem support point 20, is approximately at right angles to a plane 30 containing the cam shaft axis and the centre 17. An intermediate piece 21, fitted on the valve stem, has lugs 25, or in an alternative embodiment, Fig. 4, a pressed valve lever 13<SP>1</SP> has lugs 32, to limit transverse movement of the valve lever. In a modification an hair-pin type spring 15, which secures the lever 13 to the ball head 12, may be omitted.
Patent GB-563964-A (GB)
Title: Improvements relating to automatic fire and/or burglar alarm systems
IPC: G08B19/00
Filed: 1943-03-02
Abstract: 563,964. Fire and burglar alarms. ASSOCIATED FIRE ALARMS, Ltd., and McNEIL, E. A. March 2, 1943, No. 3440. [Class 118 (i)] [Also in Group XXI] An automatic fire or burglary alarm system of the kind wherein a tensioned wire, cord, &c., when under the influence of expansion &c. in the case of fire, or a pull &c. in the case of burglary, actuates an electric signalling device, comprises a compensating device including a floating lever and delay-action means such as a dashpot by which after a given time the floating lever which effects the operation of the signalling device will be returned to inoperative position. The tensioned wire 10 is connected by a chain 11 to a rod 13 influenced by a spring 15 to which rod is connected by a pin and slot 17 a floating lever 18 pivoting about a fulcrum 22 carried by the piston-rod 23 of a dashpot 24, the far end of the lever being held floating by two springs 20, 21 and provided with a stud 19 adapted to bear on and close pairs of switch contacts 26, 27 and 28, 29 connected up in parallel to the signalling circuit. Sudden expansion or interference with the wire 10 causes the spring 15 to tilt the floating lever about its pivot 22 so that the stud 19 closes one or other of the pairs of switch contacts 26, 27 or 28, 29, but after a certain interval movement of the dashpot piston 25 enables the spring 20, 21 to restore the end of the floating lever to mid-position and allow the switch contacts to open. Slow variations are taken up by the dashpot without movement of the stud 19. In case of a slow fire causing gradual increase of temperature insufficient to close the contacts, stops may be provided limiting the angular movement of the floating lever or the length of the dashpot cylinder may be arranged so that the travel of the piston 25 is arrested.
Patent GB-289969-A (GB)
Title: Improvements in reservoir pens
IPC: B43K5/04
Filed: 1927-02-07
Abstract: 289,969. De La Rue & Co., Ltd., T., and Dixon, H. J. Feb. 7, 1927. Addition to 239,274. Self-filling reservoir pens. -The reservoir pen of the parent Specification is modified as regards the mounting of the bar 2 astride which the bifurcated sac-actuating lever 3 is pivoted, the means for retaining the plate 5 and presser-bar 8 in engagement, and the construction of the barrel. The bar 2 is forked at one end for engagement with the end of the slot in which it is mounted, and the other end is formed with a projection 10 engaging the inside of the barrel and held in place by a resilient, sleeve 11. The sleeve, which is bent up from a, piece of sheet material is formed with a depression to receive the projection 10. The outer end of the sleeve abuts against a screw plug 13 closing the end of the barrel and so constructed as to lie flush with the surface, of the barrel and conceal the joint. The plug 13 is hollow and may receive the end of the presser-bar 8 which extends beyond the end of the sac 9. In order to prevent removal of the bar 8 except through the rear end of the barrel, and to prevent it from dropping out at the nib end when the sac is removed, a projection 15, engaging with the end of the plate 5, is formed therein.
Patent GB-639631-A (GB)
Title: Improvements in or relating to motor cycle and like change speed gear boxes
IPC: B62M25/04
Filed: 1948-02-06
Abstract: 639,631. Variable-speed gearing. ALBION ENGINEERING CO., Ltd., and HILL, W. H. Feb. 6, 1948, No. 3480. [Class 80 (ii)] A neutral finding device for a motor cycle or like gear box of the type wherein a selector shaft 8 is rotated in steps by a foot or hand operated mechanism of known construction comprises studs 21, 22, on a crank plate 18 secured to an intermediate shaft 17 which is coupled to a crank lever 10 on the selector shaft by a pin and slot 14, 15 and lever 16. These studs, 21, 22 cooperate with a cam plate 23 with noses 26, 27 on an auxiliary shaft 24 which may be the shaft of the usual kick-starter lever 25 of a motorcycle. When the selector shaft 8 is in a position N indicated by a pointer 9 corresponding to neutral gear the studs as shown are clear of the path of the cam noses 26, 27 on rotation of shaft 24 but, on movement of the shaft 8 to a gear position 1, 2, 3 'or 4, one or the other of studs 21, 22 is moved into a position in which it is engaged by the cam nose 26 or 27 on operation of the shaft 24 by a suitable lever 25. The shaft 17 is thereby actuated to rotate selector shaft 8 to the neutral position. When the lever 25 of shaft 24 comprises also the kick-starter lever the above operation is effected by a small movement only before engagement with the mechanism for rotating the engine. This device also ensures that the engine cannot be " kicked over " while the machine is in gear.
Patent GB-382494-A (GB)
Title: Boxes or grates
IPC: B65D21/06
Filed: 1932-02-05
Abstract: 382,494. Boxes or crates. BROWN, W. 0., 915, Ford Building, Detroit, Michigan, U.S.A. Feb. 5, 1932, No. 3513. [Class 18.] A box or crate of rectangular cross section with inclined side and end walls is provided with bar-like members 16, 17 for supporting a superposed box, the members extending across top of the box and being provided with shoulders 19 so that the parts 16 rest below the plane of the top of the box ; the superposed box is thus supported within the top of the lower box so that it cannot be readily displaced, while ventilation is permitted through. the spaces 18. The parts 17 of the spacing and supporting members are pivoted in the side members 8 of a frame surrounding the outside of the top of the box and when a number of boxes are to be nested inside one another, the parts 16 are turned to rest on the end members 10 of the frame ; strips 21 disposed on the inside of the end walls 5 limit the extent to which one box is nested in the one below. The frame 8, 10, which forms finger-grips for handling the box, is rabbeted on the inside a depth equal to the thickness of the walls so that the inside of the box is smooth and a frame 14 extending around the inside of the walls at the bottom of the box is similarly rabbeted on the outside so that the lower portion of the box has a smooth outside surface. The corners of the box are strengthened by angle-irons 15 and anglepieces 12.
Patent GB-347747-A (GB)
Title: Improvements in or relating to electrical switches
IPC: H01H9/18
Filed: 1930-02-03
Abstract: 347,747. Indicators for switches. McKENDRICK, C., Holborn, Succoth Gardens, Edinburgh. Feb. 3, 1930, No. 3540. [Class 38 (v).] A luminous indicator adapted to be clipped on to the operating knob 8 of a switch comprises a sleeve or cap 10 of indiarubber or like elastic non-conducting material carrying at its outer end the luminous element. The latter mav consist of a hollow button 14 coated inside with luminous paint. In modifications (Figs. 5 and 6, not shown) the cap 10 is closed at its outer end and is either directly coated with luminous paint or has a recess coated with luminous paint which may be covered by a glass button.
Patent GB-1088495-A (GB)
Title: Coated articles
IPC: B05D7/12
Filed: 1965-01-27
Abstract: An article of manufacture comprises a solid substrate containing a tannin e.g. wood, leather, and has a coating thereon comprising a water-insoluble linear copolymer of ethylenically unsaturated monomer molecules containing from 5 to 15% by wt. of at least one lactam and at least 50% by wt, of at least one compound selected from (C1 to C18) alcohol esters of acrylic acid or (C4 to C18) alcohol esters of methacrylic acid, the copolymer having a second order transition temperature in the range of -40 DEG C to +20 DEG C and the lactam(s) being of the formula:- <FORM:1088495/B1-B2/1> wherein R is hydrogen or methyl and R1 is hydrogen, methyl or ethyl.  The lactam units in the copolymer may be derived from N-vinyl-2- pyrrolidinone, examples of which are given.  Leather may be coated with a water-insoluble linear copolymer, having a second order transition temperature in the range of -40 DEG C to +5 DEG C, of (i) 5 to 15% by wt. of N-vinyl-2-pyrrolidinone and 95 to 85% by wt. respectively of at least one (C1 to C18) alcohol ester of acrylic acid, or (2) 5 to 15% by wt. of N-vinyl-2-pyrrolidinone, at least 50% by wt. of a compound selected from (C1 to C18) alcohol esters of acrylic acid or (C4 to C18) alcohol esters of methacrylic acid, examples of which are given, and up to 5% by wt. of another copolymerizable monoethylenically unsaturated monomer containing a reactive group selected from carboxylic acid, amino, amide, hydroxyl, glycidyl or ureido groups, examples of which are given. The copolymer may contain up to 30% by wt. of the monomer mixture of a monomer selected from styrene, vinyl-toluene, methyl, ethyl, or propyl methacrylate, acrylonitrile or methacrylonitrile.  The coating may also contain wax, natural resins, e.g. copal and shellac, or water-soluble salts of copolymers of 20 to 75% acrylic or methacrylic acid with methyl methacrylate or ethyl acrylate or mixtures thereof.  The coating composition, which may take the form of an aqueous dispersion, may be applied by spraying, brushing, roll-transfer or immersion. One or more coats of the composition may be applied.  At least one coating of another film-forming substance, examples of which are given, may be superimposed on the coating of the water-insoluble linear copolymer. The coated leather may be embossed at any time but preferably before the last or final coat.
Patent GB-654765-A (GB)
Title: Improvements in or relating to electrical heating elements and process of making same
IPC: H05B3/76
Filed: 1948-02-07
Abstract: 654,765. Making electric heater elements. WIEGAND CO., E. L. Feb. 7, 1948, No. 3646. Convention date, Oct. 21, 1940. [Classes 83 (ii) and 83 (iv)] [Also in Group XI] Forging-dies.-A sheathed element is made by applying lateral pressure to a sheath 30 having an axial helical resistor 31 embedded in partially compacted granular refractory therein so as to reform the sheath to a different intermediate smaller crosssection, and again applying lateral pressure thereto to reform the sheath to a still smaller cross-section of triangular outline to compact the refractory. A sheath of circular section is pressed laterally to an oval or oblong section 30a with a major axis preferably equal to the previous diameter of the sheath and after bending to a spiral, is pressed laterally to a triangular cross-section, one end of the oval section forming an apex. The sheath is bent in a minor axis plane of the oval sheath. The sheath is press forged at a-pressure of 40 tons per square inch to a smaller cross-section without elongation by a flat die 42, and a die 37 with a matrix 36 of V-section, which may have a spiral axis. The triangular section formed may be equilateral or isosceles and has slightly rounded corners, and the sides are straight or slightly curved outwards. The helical resistor 31 is also formed to a triangular shape parallel to the sheath walls..The resistor may however be a sinously bent wire in a plane in the sheath parallel to one of the triangular sides, on which an object to be heated rests. The zig-zag wire may be bent to a dihedral angle and enclosed in a sheath as in Fig. 16 so that two of the triangular sides of the sheath are heated more than the third side. Specification 642,192 is referred to.
Patent GB-1380419-A (GB)
Title: Gas turbine engine having thrust reversers
IPC: F02K1/70
Filed: 1971-02-02
Abstract: 1380419 Thrust reversers DEFENCE SECRETARY OF STATE FOR 26 Jan 1972 [2 Feb 1971] 3659/71 Addition to 1345337 Heading B7G A gas turbine engine has: a gas flow duct defined by a cowl (18), Fig. 1 (not shown), and a core engine (12); a plurality of blocker doors 34 which when non-operative (solid lines) block respective apertures in the cowl and which are connected at positions between their ends via links 48 to fixed structure upstream of the apertures and are each movably mounted via rollers 35, 36 at their downstream ends in mounting means 38; and blocker door actuating means 40 to cause the doors to move across the gas flow duct (chained lines), the arrangement being such that the combination of the force on each door 34 of the gas flowing through the duct, the link reaction force and the reaction forces of the door mounting means provides a resultant force which tends to return each door to its non-operative position, until such time as engine effective thrust reaches a pre-selected value, whereupon the direction of the resultant force reverses and thereafter assists in moving the blocker door 34 across the gas flow duct. Each blocker door mounting means comprises a cam track 38 formed in fixed structure, the doors being mounted by means of levers 39 and rollers 36 and 35 moving in the cam track 38. Initial movement of each door 34 is achieved by means of an abutment piece 54 co-operating with a push-rod 58 connected with the nut 46 of a ball screw and nut mechanism 40, this piece 54 abuts a roller 62 mounted on the door 34. Movement of the nut 46 upstream not only pushes the rod 58, but also pulls on a link 37 which rotates the levers 39 about the roller 36, this rotation being controlled by the engagement of the roller 35 in the cam track 38. Outer doors 30 are connected to respective blocker doors 34 for simultaneous opening and closing.
Patent GB-797958-A (GB)
Title: A process for bleaching certain acrylonitrile fibers
IPC: D06M11/55
Filed: 1956-02-06
Abstract: Fibres composed of at least 80 per cent by weight acrylonitrile and from 2 to 10 per cent of one of the polymers listed below are treated with a strong mineral acid before bleaching with an aqueous solution of sodium chlorite.  The mineral acid may be sulphuric, nitric, hydrochloric, phosphoric or pyrophosphoric acid and may be at a concentration of 0.05 to 0.5 per cent by weight in aqueous solution and at a temperature of 185 DEG  to 212 DEG  F.  The sodium chlorite may be at a concentration of 2.5 to 6.0 per cent by weight in aqueous solution at a temperature of 140 DEG  to 180 DEG  F. The minor component of the acrylonitrile fibre is derived from a N-hetero cyclic monomer such as alkyl substituted unsaturated imidazoles, benzimidazoles, imidazolines, oxazoles, benzoxazoles, benzothiazoles, pyridazines, pyrimidines, pyrazines, pyrazoles, pyrroles, triazines, quinolines, pyridines, thiazoles and lactams. The principal component may be a copolymer of acrylonitrile with one or more copolymerizable monomers of which many are specified.
Patent GB-542270-A (GB)
Title: Improvements in or relating to optical projection apparatus
IPC: G03B21/16
Filed: 1941-03-17
Abstract: 542,270. Optical-projection apparatus. KODAK, Ltd. (Eastman Kodak Co.). March 17, 1941, No. 3671. [Class 97 (i)] Air is directed upwards from a conduit through a housing 1 (incompletely shown) so as to pass on both sides of a slide 3, and the slide and the bottom member 7 of a slide carrier in conjunction with shaped lower and upper members 33, 21, form an "air-foil section" splitting the air into two non-turbulent streams. Transparent plates may be carried behind and in front of the slide, and close to it, to provide thin air channels between them and the slide. The carrier is movable through openings in the housing, has handles 9, projections 8 on the member 7, posts 10, 11 forming slide-retaining guides housing springs 13, and grooves 20 in the posts engaging the member 21. A condenser lens may be carried by the rear wall of the housing 1, and the front transparent plate may be carried by the front wall of the housing or be spaced behind an aperture therein.
Patent GB-1329392-A (GB)
Title: Explosive compositions containing guar gum derivative
IPC: C09K3/00
Filed: 1972-01-26
Abstract: 1329392 Explosive compositions IRECO CHEMICALS 26 Jan 1972 [10 Nov 1971] 3673/72 Heading C1D An explosive composition contains oxidized guar gum as a cross-linkable thickening agent. The oxidized guar gum is of reduced molecular weight and may be prepared by chemical or enzymatic oxidation. When it is used in an aqueous slurry explosive composition, a cross-link is formed superior to that obtained with ordinary guar gum, especially in compositions containing calcium nitrate. Other specified components of slurry compositions are ammonium nitrate, sodium nitrate, water, fuel oil, ethylene glycol, thiourea, sodium thiosulphate, aluminium, tapioca flour, a solution of sodium dichromate as a cross-linking agent, and sodium nitrite as a gassing agent. Other cross-linking agents referred to are borate and ferric ions, and ions containing Al and Ti.
Patent GB-868151-A (GB)
Title: Improvements in or relating to radio transmitting systems
Inventor: RUTTER JACK ARTHUR
IPC: H03H7/48
Filed: 1959-02-03
Abstract: 868,151. R.F. couplings. PYE Ltd. Feb. 2, 1960 [Feb. 3, 1959], No. 3807/59. Class 40(7) In order to connect two radio frequency energy sources operating at the same frequency to a load, for example an aerial, the two sources 1, 2, are connected to the opposite corners of a bridge network, the load Rf to another corner and a balancing load Rb to the remaining corner. The arms of the bridge consist of symmetrical II networks and three of the arms are similar whilst the fourth arm (adjacent the balancing load) produces a phase shift equal, but of opposite sign, to that introduced by the-other arms. According to the invention the networks are constructed so that each source is presented with an impedance equal to the load impedance Rf. For this purpose the values of L and C in the networks are related by the equation:- Fig. 2 shows the complete II networks but, as C3 and L3, and also L4 and C7, form parallel tuned circuits of infinite impedance at the frequency of operation, these components can be omitted. Further C1 and C2, and also C4 and C5, can be replaced by single equivalent capacitors. The resultant circuit then becomes as shown in Fig. 4. As the bridge presents the same impedeance as the load impedance to the sources, switches Sl, S2, S3, S4 may be introduced so as to enable one source to feed the load directly and the other to be disconnected or arranged to feed into the balancing-load. In the latter case the balancing load forms a convenient, dummy load for test purposes.
Patent GB-1169001-A (GB)
Title: Portable Extensometers
Inventor: BLAKELEY RONALD EDWARD
IPC: G01B5/30
Filed: 1966-01-28
Abstract: 1,169,001. Measuring extension electrically. JOSEPH LUCAS (INDUSTRIES) Ltd. Dec. 28, 1966 [Jan. 28, 1966], No. 3879/66. Heading G1N. An extensometer comprises two plates 11, 12, Fig. 2, clamped together at both ends by pairs of pins 13, 14, the plates being provided with transverse slots 11a, 12a (Figs. 3 and 4) adjacent opposite ends to give the plates resilience to longitudinal extension. Movement apart of the pins whose ends are engaged in the surface of the object under investigation, canoes relative movement of the central regions of the plates, which movement is detected by the varation in accordance of a coil, mounted on a holder 15 on the central point of the plate 11, the coil core 16 being mounted on the end of plate 12. The core is secured to the plunger of a micro-meter 17, carried by the end of plate 12, which may be used for calibration of the extensometer. For cylindrical objects, Fig. (not shown), the plates are clamped on to the surface by members 18, 22 and chain 23. When the device is inoperative, the plates 11, 12 are locked together by member 24 incorporating a spring-loaded ball 25.
Patent GB-231982-A (GB)
Title: Improvements in or relating to barless fire grates
IPC: F23H13/00
Filed: 1924-02-15
Abstract: 231,982. Shaw, T. Feb. 15, 1924. Grates; ash-guards.-To prevent lateral movement of the ash-guard 2 of a barless grate it is provided with projections 16 adapted to fit into recesses 12 in the front edge of the grate. The grate shown is formed .with chipping pieces 21, 22 to enable it to be fitted to the fireplace.