baber/WOPTO huggingface dataset:
Patent GB-802740-A (GB)
Title: Copolymers containing an acrylamide
IPC: C08F8/30
Filed: 1955-07-18
Abstract: Copolymers of vinyl acetate or acrylic or methacrylic esters with acrylamide or methacrylamide are cross-linked by adding thereto a polyisocyanate, e.g. toluylene isocyanate, or a polyaldehyde, e.g. glyoxal or trioxane, and heating the mixture at a temperature of from 25 DEG  to 105 DEG  C.  In a modification of the process the amido groups of the copolymer are hydrolysed, e.g. with aqueous sulphuric acid, and the resulting carboxyl groups reacted with a polyalcohol, e.g. pentaerythritol, a polyamine or an inorganic polyvalent base. The examples describe the copolymerization of acrylamide with vinyl acetate or methyl acrylate in solution in toluene in the presence of benzoyl peroxide and the copolymerization of acrylamide with methyl acrylate in an aqueous medium containing sodium sulphoricinate, an oleic acid/ethylene oxide condensate and ammonium persulphate.
Patent GB-532131-A (GB)
Title: Improvements relating to coke oven doors
IPC: C10B25/12
Filed: 1939-07-17
Abstract: 532,131. Coke oven doors; mercury switches. OTTO-WILPUTTE OVENBOUW MIJ: July 17, 1939, No. 20731. Convention date, July 16, 1938. [Class 55 (i)] [Also in Group XXXVII] In apparatus for locking and unlocking coke oven doors and comprising a screw adapted to be rotated by power-actuated mechanism relatively to a nut, a device is provided for stopping the locking or unlocking action of the screw when such action has been completed and including timing means which cause relative rotation of the screw and nut to stop after a pre-determined time. The relative rotation of the screw in the locking direction is derived from the power shaft through transmission gear having a higher velocity ratio than that by which the unlocking is effected. A screwed spindle E is threaded through each of cross bars D, DA connecting channel bars C to which a sealing member G with rim portion g is secured, the rim portion being pressed against a sealing surface A<SP>1</SP> on the door frame. A door machine part K carries a lower spring pressed positioning member M, and an upper lifting hook N which actuates a lever NA to tilt the locking bar I out of engagement with the hooks J, this movement being transmitted by a link P to the lower bar I. The door machine K carries the door when it is removed from the frame. The door securing and releasing mechanism is contained in a housing L, and is operated by a motor 8 through reduction gearing, the operating shaft 1 carrying two gear wheels 19, 21, the former meshing with a gear wheel 18 of the same diameter, and the latter with a gear wheel 20 of half its diameter. The gear wheels 18, 20 are connected alternately to the driving mechanism, the gear 18 being used for locking and the gear 20 for unlocking the door, rotation of the shaft 1 being communicated to spindle E by a lever 3 carrying pins 4 which engage arms E<SP>3</SP> extending from a central socket receiving the end of spindle E. Means are provided by which the motor is switched off when the sealing pressure of the door becomes excessive. A self opening time switch, Fig. 5, may be used to start and stop the unlocking operation of motor 8. This mercury switch comprises an elongated body divided into two chambers 61, 62, a pair of contacts 65 extending into each chamber and being operatively connected when the chamber 61 is filled with mercury as shown. The mercury drains out through a passage 63 into the lower chamber, and, after a time interval, breaks the contact. The next unlocking operation is started by giving a half turn to the container which brings the chamber 62 to the top and the contacts 65 in engagement with contacts 66, 67 thus energizing the motor 8.
Patent GB-569455-A (GB)
Title: Improved method of making laminated wood slabs or blocks, particularly for the production of propeller blades
IPC: B27D1/04
Filed: 1943-12-11
Abstract: 569,455. Plywood ; wood blocks. ENGINEERING & RESEARCH CORPORATION. Dec. 11, 1943, No. 20777. Convention date, Oct. 30, 1942. [Classes 145 (i) and 145 (ii)] Wood laminµ of equalsize and shape and impregnated with a thermosetting material such as a phenolic condensation product, and of a predetermined total weight, are heated and compressed to a predetermined thickness to form a slab. The edges of the laminµ may be confined during the compression giving slabs of equal volume. A number of such slabs are glued together to form a laminated block from which propeller blades or other articles may be made. Specification. 554,510 is referred to.
Patent GB-815736-A (GB)
Title: Apparatus for controlling tension in filamentary or strip material wound from a package to a former
Inventor: MITCHELL WILLIAM ERIC
IPC: B65H59/18
Filed: 1955-07-19
Abstract: 815,736. Textile tension control devices. DUNLOP RUBBER CO. Ltd. July 11, 1956 [July 19, 1955], No. 20804/55. Class 120(2) [Also in Group XVI] Apparatus f o r controlling t h e tension in filamentary or strip material and maintaining it at a predetermined value during winding on a former comprises a driving member rotatable at a predetermined speed, a rotatable drum adapted to be engaged and driven by the material, a lever angularly movable against spring means by the tension in the material on the output side of the apparatus and means associated with the lever for moving the drum into and out of engagement with the driving member when the tension in the material respectively rises above and falls to a predetermined value. Material 25 passes round a grooved drum 12 mounted on bearings on a spindle 10 secured to a lever 7 pivoted at 4 to a bracket 1, and then over a grooved pulley 20 rotatably mounted on the end 9 of the lever 7. Should the tension in the material 25 become excessive, the lever 7 is drawn in a clockwise direction against the action of a spring 23 having an adjusting nut 27, and this brings the surface 19 of a driving member into contact with the surface 24 of the drum 12 at one point to drive the drum and thus feed the material 25. When the tension falls the spring 23 urges the lever 7 to a central position against a stop 22 and so disengages the surface 19 from the surface 24. These surfaces are preferably of metal, but one or both may be of brake lining material. Adjusting screws 26, 27 compensate for wear of the surfaces 19, 24. Specification 786,162 [Group XXXIV] is referred to.
Patent GB-1279372-A (GB)
Title: Bi-isoquinolinones
IPC: C07D217/24
Filed: 1971-04-19
Abstract: 1279372 Bi-isoquinolines CIBA-GEIGY AG 19 April 1971 [3 Feb 1970] 20816/71 Heading C4P The invention comprises bi-isoquinolines of formula wherein rings A and B may contain non-ionic substituents, e.g. halogen, nitro, alkyl or alkoxy groups. The rings A may also contain condensed rings. The compounds are prepared by reacting a compound of formula with a mono- or dihalogenosuccinic acid, fumaric acid, maleic acid, acetylenedicarboxylic acid or the acid chloride of these acids in a molar ratio of 2 : 1 in an inert organic solvent, e.g. chlorobenzene, nitrobenzene or dimethylformamide. The reaction is carried out by heating at 100-150 C. for about 4 hours. The dyes give yellow to red shades on polystyrene, polymethacrylate, polyester and polycarbonate materials.
Patent GB-148979-A (GB)
IPC: G01S1/72
Filed: 1920-07-10
Abstract: 148,979. Signal Ges. Nov. 18, 1918, [Convention date]. Subaqueous audible signals.-An electro-magnetic apparatus, capable of operating either as a non-polarized transmitter or as a polarized receiver, has two windings a, b, the former of which is subdivided, and the connexions are such that during transmission, when only one of the windings is in use, no current is induced in the other. In the arrangement shown in Fig. 1, the winding a is connected, during transmission, to the alternator w, and its two parts are arranged to have no resultant inductive effect on the winding b, which is connected to the telephone t. Polarizing-current is supplied to the winding b, during reception, from mains n through a filtercircuit d1, d2, k2, which eliminates current ripples. In the arrangement shown in Fig. 2, the winding a serves for reception as well as transmission, the connexions being altered by a switch s so that during transmission the two parts of the winding a produce opposite poles and annul one another as regards their effect on the coil b, while during reception, when the apparatus is polarized by current in the coil b, the two parts of the winding a produce similar poles. In the arrangement shown in Fig. 5, in which four U-shaped field magnets are employed, the winding b embraces all four magnets in the same sense, while the four parts of the coil a are wound alternately in opposite senses. The coil b, which carries the polarizing-current, is wound for high tension, to suit the voltage of the mains, while the coil a is low-wound. Alternatively to the above arrangements, the coil b may be used for transmitting and receiving and the coil a for the polarizing- current. In this case the parts of the coil a are connected in opposition during transmission and in the same direction during reception. The constructional form of the arrangement with four magnets illustrated in Fig. 5 is shown in Fig. 4. The magnets and their armatures are mounted on plates 8, 9, which are connected by a longitudinally-vibrating rod and tube 6, 7 to form an oscillatory system.
Patent GB-1034027-A (GB)
Title: Improvements in conveyors
IPC: B61B10/02
Filed: 1965-05-18
Abstract: 1,034,027. Conveyer systems. JERVIS B. WEBB CO. May 18, 1965 [May 21, 1964], No. 20919/65. Heading B7L. A power-driven and free-wheeling conveyer has a track 16, Fig. 1, supporting ,carriers 10 each equipped with a pair of longitudinally spaced leading and trailing driving dogs 28, 30, Fig. 2 (not shown), an adjacent track 26 supporting an endless propelling chain 33 having pairs of longitudinally spaced leading and trailing probers 36, 38 mounted thereon with the spacing between each pair of pushers 36, 38; 36a, 38a (not shown) &c. being slightly in excess of the spacing between the dogs 28, 30, the invention being characterized in that a driving dog and pusher sorting section is provided between positions A, B for automatically placing the leading pusher 36 of a pair in engagement with the leading dog 28 of a carrier 10, the sorting section comprising a track section along which the tracks 16, 26 diverge and converge, as at 40, from the position A, where a pusher and dog disengage to a position B when they can re-engage, to provide a length of track 26 which exceeds the length of the track 16 between the positions A, B, the length of the track 16 between those portions not exceeding the spacing between the dogs 28, 30 and the length of the track 26 between the positions A, B being not less than the spacing between the pushers 36, 38. The spacing between adjacent pairs of pushers 36, 38; 36a, 38a (not shown) &c. is different from the spacing between the leading and trailing pushers of a pair. Carriers 10 are transferred from a forwarding propelling chain 21, driven by known means 24, to the chain 26, driven by known means 34. The above construction ensures that regardless of which pusher of a pair 36, 38 engages which dog of a pair 28, 30 the dogs and pushers are automatically reorientated as the carrier passes through the sorting section at 40, to place the leading dog 28 of the carrier in proper engagement with the leading pusher 36 of a pair of pushers, all as described with reference to Figs. 3 to 5 (not shown).
Patent GB-209523-A (GB)
Abstract: 209,523. Broughton, J. Oct. 31, 1922. Transfer mechanism.-In counting-apparatus having transfer mechanism of the Geneva type between the successive numeral discs 1, 2, 3, the locking-wheel 9 co-operating with the notched locking-disc 6 is provided with a scalloped edge, the curvature of the recesses between the teeth thus formed being the same as that of the locking disc. The notch 10 in the locking-disc is arranged at the side of the transfer pin 7, so that the movement initiated by the engagement of the pin 7 with the adjacent pinion 8 is completed by the engagement of the notch 10 with the teeth of the locking-wheel. Reference has been directed by the Comptroller to Specification 1132/93.
Patent GB-578127-A (GB)
Title: Machines for fabricating spring assemblies
IPC: B21F33/04
Filed: 1943-12-14
Abstract: 578,127. Spring assemblies. TRIGGS, W. W. (United States Bedding Co.). Dec. 14, 1943, No. 20975. [Class 52 (iv)] Springs A are fed by hand between guides 20 until their end turns are positioned in grooves in die plates 21. A clamping device 26 holds the springs in place while spiral connectors B are threaded along a channel 22 in the die plate at each end of the springs to interconnect the row and the clamping means is then withdrawn. By operating a crank 43 the opposed pairs of die plates are fed downwardly a distance corresponding to the spacing of the spring rows and a second row of springs is inserted in the guides 20 the end turns of which row enter the upper grooves of die plates the lower grooves of which already accommodate the unconnected edge of the initial row of springs. The clamping device is again brought into operation and a second pair of spiral connectors is applied and the process repeated until the desired number of rows have been connected and the assembly drops on the apron 100. The clamping means preferably comprise toggle-operated bars which are withdrawn between operations by a chain and sprocket mechanism 60, 62 carried by an extension 63 at one end of the machine and operated by a lever 69.
Patent GB-1559258-A (GB)
Title: Travellin machine arrangements
IPC: B61D15/00
Filed: 1977-05-18
Abstract: For the more efficient transport of ballast during the cleaning of the ballast bed of tracks, use is made of a train unit comprising a number of track vehicles (1 - 5). A track formed from two rails (17) extends across all the track vehicles. Each track vehicle has, arranged between said rails, a loading surface for a number of transport containers (12 - 16, 31) for receiving the ballast. A portal frame (20), a gripping, lifting and holding device (28) as well as a crane vehicle (18) having rail bogies (19) for conveying the transport containers are movable on the rails. The crane vehicle has its own drive (30) in order that it can move the empty transport containers (16) to a loading point provided on the first track vehicle (1) and can move the filled transport containers (12, 13) from said point onto the remaining track vehicles (2 - 5). <IMAGE>
Patent GB-698712-A (GB)
Title: Improvements in or relating to helicopters
IPC: B64C27/32
Filed: 1951-09-06
Abstract: 698,712. Fluid-pressure servomotor-control systems. UNITED AIRCRAFT CORPORATION Sept. 6, 1951 [Sept. 26, 1950], No. 21064/51. Class 135 The pitch of the blades of a helicopter can be adjusted by the pilot with the assistance of a fluidpressure system comprising a control valve and a piston-and-cylinder servomotor, the latter acting to tilt a stationary swash plate with which co-operates a rotary swash plate connected to the blades. In an embodiment, movement of the pilot's lever 28 acts through a cable 78, bell crank 76, rod 70, floating lever 66, link 90, and lever 94, to move a piston valve 100 from its neutral position. The valve controls the flow of pressure fluid to and its exhaust from a double-acting piston servomotor 52, and the piston is connected to and tilts a non- rotary swash-plate 46 carried by the rotor shaft 30. A further swash-plate 44 rotating with the shaft 30 and co-operating with swash-plate 46 is connected to rotor blades 14 so that the pitch of the blades will be varied cyclically as they rotate. One end of lever 66 is pivoted on to the stem of the piston of the servomotor 52 to provide follow-up so that the amount of pitch change will correspond to the amount of movement of lever 28. Identical servomotors are connected to two other bosses 63 on swash-plate 46 to allow of collective pitch control, whilst the remaining boss 63 is connected to a scissors linkage holding the swash-plate against rotation. To cut out the fluid-pressure system and allow direct manual actuation of the swash-plate 46, the pilot moves a lever 122 which, through a flexible cable and a lever 124, rotates a plug valve to interconnect the two ends of the servomotor cylinder. At the same time, a cam on the end of the plug valve shaft, and which normally engages with some play in an aperture in the end of a strut 130 connected to lever 94, is rotated to hold the strut rigidly so that the lever 94 becomes fixed and the point 88 where link 90 is pivoted to floating lever 66 also becomes a fixed point. Actuation of pilot's lever 28 will thus move the piston of the servomotor and the swash-plate 46 directly. In a modification, the servomotor piston is fixed and the cylinder is connected to swash-plate 46. The cylinder also carries the casing of valve 100 to provide the follow-up effect, and a small amount of lost motion is provided at the point where the servo-cylinder is connected to the swash-plate, to the piston of the pilot valve, and to a strut in the mechanical linkage from the pilot's control lever. The rotary plug valve which, when opened, interconnects the two ends of the servocylinder to permit direct manual actuation of the swash-plate 46 is now replaced by a spring-loaded piston valve kept in the closed position by the pressure of the fluid which actuates the servomotor.
Patent GB-763518-A (GB)
Title: Improvements in or relating to stoves
IPC: F24B13/02
Filed: 1954-07-21
Abstract: 763.518. Closed solid fuel stoves. CUBBAGE, L. A. July 18, 1955 [July 21, 1954], No. 21306/54. Addition to 734,220. Class 126 A stove comprises a fire space enclosed by a ring of firebricks suspended by a metal sleeve above an apertured firegrate, and a metal cylindrical fuel container continuous with the top of the sleeve, an outer casing spaced from the ring of firebricks and the fuel container to form a flue space, and a damper for admitting air to a space beneath the grate. The firebricks 10 are supported by shoulders engaging a flange 12 at the bottom of the sleeve 13, above which extends the fuel container 18. The sleeve is provided with studs 16 on a flange 15 at its upper end which engage in the top of tubular legs 14 held in place by studs 17 on the base of the stove. Primary air for combustion entering the space 22 below the grate 9 is controlled by a damper 23, and secondary air may be supplied through the tubular legs 14 which have openings (not shown) at their lower ends, and the studs 17 which may be hollow. The remaining air entering the legs 14 passes out into the flue space formed between the fuel container 18 and outer casing 1, serving to cool the legs.
Patent GB-460446-A (GB)
Title: Improvements in or relating to coaxial conductor cables for electric transmission systems
IPC: H02G15/02
Filed: 1935-07-27
Abstract: 460,446. Cable-end sleeves. STANDARD TELEPHONES & CABLES, Ltd., and BIRKBY, H. July' 27, 1935, No. 21383. [Class 36] A sealing device for the end of a cable having a plurality of coaxial conductor pairs 9-12 comprises a plate 2 provided with metal tubes 3-6, through which the coaxial conductor pairs individually pass. The plate 2 is carried by a casing 1 which is connected to the cable sheath 8 by a wiped joint 14. Air-tight joints between the plate and casing and between the plate and metal tubes are secured by solder 7, whilst solder 13 seals the coaxial conductors to the metal tubes. When the cable contains also ordinary conductor pairs or quads, these are joined to a length of lead covered cable which is passed through and sealed to an additional metal tube in the plate 2.
Patent GB-1514642-A (GB)
Title: Dimerisation of acrylonitrile
IPC: C07C/
Filed: 1976-05-24
Abstract: 1514642 Dimerization process IMPERIAL CHEMICAL INDUSTRIES Ltd 18 April 1977  [24 May 1976] 21401/76 Heading C2C Dinitriles comprising at least 85% by weight of 1,4-dicyanobutenes are obtained by dimerizing acrylonitrile using an organic phosphite catalyst in a liquid medium, which is a solvent for the catalyst, and comprises an organic proton donor and is substantially devoid of water, the acrylonitrile comprising less than 50% by weight of the total liquid reaction mixture.
Patent GB-950941-A (GB)
Title: Improvements in or relating to chromium plating
IPC: C25D21/14
Filed: 1960-06-17
Abstract: Pellets for making up and maintaining chromic acid baths (see Division C7) are formed from a composition comprising predominantly moist CrO3, as chromic acid or anhydride, with or without a chromate, dichromate or polychromate of an alkali or alkaline earth metal e.g. Na, K, Mg, Sr or Ca, and/or SrSO4 and K2SiF6, to which may be added between 0.005 and 0.75% of an anti-misting agent such as a fluorinated hydrocarbon. Similar pellets for chromating baths comprise moist CrO3, a soluble nitrate and a soluble sulphate. U.S.A. Specifications 2,750,334, 2,750,335, 2,750,336, 2,750,337 and 2,846,380 are referred to.ALSO:Chromium is electrodeposited on a cathode from an electrolyte made up and maintained by adding pellets formed from a composition comprising predominantly moist CrO3, as chromic acid or anhydride with or without SrSO4 and K2SiF6, to which may be added between 0.005 and 0.75% of an anti-misting agent such as a fluorinated hydrocarbon.  A chromate, dichromate or polychromate of an alkali metal such as Na or K, or alkaline earth metal such as Mg, Ca or Sr, may also be included in the composition.  Also, chromate conversion coatings are produced on Cd or Zn by immersing the metal in an aqueous chromating solution made up and maintained by adding similar pellets formed from a composition comprising moist CrO3, a soluble nitrate and a soluble sulphate (excluding reducing agents), e.g. Na2SO4, NaHSO4, NaNO3, or H2SO4 and HNO3.  For example, the solution may contain 65 g/l CrO3, 8 g/l H2SO4, 3.5 g/l HNO3 and 13 g/l acetic acid.  Similar moist CrO3 containing pellets may be used for chromate anodizing baths. U.S.A. Specifications 2,750,334,2,750,335, 2,750,336, 2,750,337 and 2,846,380 are referred to.
Patent GB-872245-A (GB)
Title: Improvements in gas filter panels
Inventor: RINGE DONALD FRANK
IPC: B01D46/00
Filed: 1956-07-11
Abstract: 872,245. Separation of dust from gases. VOKES Ltd. Aug. 16, 1957 [July 11, 1956], No. 21504/56. Class 8(2). A dust-laden gas filter panel comprises a plurality of superposed layers 3, Fig. 1, of oilwetted corrugated metal or plastic foil, the corrugation of each layer being transverse to those of an adjacent layer and all layers being supported in a vertical closed-sided openended frame 1 of channelled cross-section so as to be inclined to the gas inlet of the panel thereby allowing excess oil to drain from the clean gas side. To this end metal wedges 2, Fig. 2, having a 25 degree slope are inserted in the top and bottom channels of the frame. Front and rear wire mesh screens 4 serve to retain the layers 3 in position. A plurality of such panels may form a travelling band filter of the oil-bath type.
Patent GB-689550-A (GB)
Title: An improved intermittent feed mechanism for cinematographic apparatus
IPC: G03B1/22
Filed: 1951-09-13
Abstract: 689,550. Kinematograph apparatus. DEBRIE, A. V. L. C. Sept. 13, 1951 [Oct. 12, 1950], No. 21581/51. Class 97 (i). In intermittent film feed mechanism a claw is carried on a small thin plate guided to move in its own plane which is parallel to the direction of film feed and perpendicular to the plane of the film, the plate being displaced in a direction perpendicular to the plane of the film by a rotary cam on an axis perpendicular to the plane of the film and also being displaced in the direction of film feed by a cam coaxial with the first cam. As shown, the claw 16 is carried on an extension 17 of a plate 12 having projections 10 and a lightening hole 18 and guided between parallel plates 13. Two discs 1, 2 rotate about an axis 3 and facecams 4, 5 on their adjacent faces act on the edges 9 and 11 of the plate 12 to move the claw towards or away from the film. The projections 10 are engaged in cam tracks 6, 7 shaped to produce the feed movements.