baber/WOPTO huggingface dataset:
Patent GB-112985-A (GB)
Title: Improvements relating to the Electric Transmission of Signals.
Inventor: LAIDLAW ERNEST ALEXANDER
IPC: H04Q1/446
Filed: 1917-02-01
Abstract: 112,985. Laidlaw, E. A. Feb. 1, 1917. Automatic and manual exchange systems and apparatus; simultancous and alternative telegraphy and telephony. - A signalling current apparatus controlled by alternating current of a frequency differing by a small amount from the frequency of an alternating current normally flowing in the line, is controlled by an electrically or mechanically tuned relay and a slow acting relay in such a manner that the signal circuit is not closed unless the signalling current has a pre-determined duration. The arrangement may be applied to automatic or manual exchange telephone systems. In the arrangement shown in Fig. 1 two stations A and Bare connected by a line X in which an alternating current normally flows. The station A is provided with a generator G controlled by a switch K and is adapted to generate an alternating current of a frequency different by a small amount from the frequency of the alternating current normally flowing in the circuit X. The station B is provided with a circuit E, F tuned to the frequency of the generator G and containing the winding of a relay H. The relay H controls the circuit of a slow-acting relay D so that unless the signalling current has a pre-determined duration the circuit of the signal lamp S is not made. In a modification the relay H is mechanically tuned. In the modification shown in Fig. 3 a tuned circuit connected to the line X contains the primary winding of a transformer T' the secondary of which is connected to the grid circuit of an amplifier V the filament and anode circuit of which contains the primary winding of a transformer T the secondary winding of which is in circuit with a relay H<2>. The relay H<2> controls the circuit of a slow-acting relay D<1> controlling the signal lamp S<1>. When employed in an automatic telephone system the relay D controls the motor magnet circuit and the impulse transmitter is arranged to send a number of trains of impulses corresponding to the number of times it is required to close the motor magret circuit. The arrangement may also be applied to manual exchange systems.
Patent GB-580355-A (GB)
Title: Improvements relating to electric lighting systems for cycles
IPC: B62J6/00
Filed: 1945-01-22
Abstract: 580,355. Self-contained supply systems. LUCAS, Ltd., J., and COOKE, W. Jan. 22, 1945, No. 1723. Drawings to Specification. [Class 38 (iv)] Variable-speed generators, with.-A cycle lighting system comprises an A.C. generator, a head-lamp bulb holder, a resistance in series with both, and a tail-lamp bulb holder in parallel with the resistance.
Patent GB-1291911-A (GB)
Title: Smelting of sulphide ores
IPC: C22B5/14
Filed: 1970-01-14
Abstract: 1291911 Smelting sulphide ores; copper OUTOKUMPU OY 14 Jan 1970 [14 Jan 1969] 1822/70 Heading C7D In a method of flush smelting sulphide ores in a shaft furnace the ores are oxidized by being passed down a reaction shaft together with oxidising gases, and the gases on leaving the shaft are passed through a sedimentation zone in which slag and matte accumulate, and thence into a rising flue. The partial pressure of sulphur in the gases in the sedimentation zone is increased and/or the partial pressure of oxygen is decreased so that the metal oxides in the dust entrained in gases passing to the flue are converted to sulphides and most at least of the iron content of the slag formed remains in bivalent form. The sulphidised dust may be separated from the gas and returned to the flash smelting step or the components of the dust may be separated by flotation. The reaction gases may be reduced to such an extent that the gases retain an SO 2  content only sufficient for introduction to a sulphuric acid plant, the excess SO2 being reduced to elemental sulphur. In the smelting of sulphidic copper ores, a matte rich in copper or molten metallic copper may be separated in the sedimentation zone with a slag containing a very small content of copper.
Patent GB-557319-A (GB)
Title: Improvements in or relating to machines for inserting cartridges into cartridge belts for automatic guns
IPC: F42B39/10
Filed: 1942-02-11
Abstract: 557,319. Cartridge-belt filling machines. HALL, C. T., HARRIS, R. W., and MOLINS MACHINE , CO., Ltd. Feb. 11, 1942, No. 1831. [Class 92 (ii)] Machines for inserting cartridges into the pockets or loops of flexible belts comprises means for turning askew a cartridge being fed towards the entry edge of the belt so that the nose of the bullet is directed towards the rear end of the loop considered in the direction of belt feed. In the form shown, cartridges are supplied from a hopper to a fluted drum 5, Fig. 7, which discharges into a vertical magazine 29 terminating at a table 50 in front of a pusher 52. The cartridges are stripped from the drum by a member 30 and the superposed cartridges in the magazine are supported, during loading of a cartridge into a pocket, by a wedge-shaped cut-off 31 operated by a cam-actuated arm 34. This wedge 31 has an inclined surface pressing against the cartridge x to be loaded, and' the part 129 at the base of the magazine being cutaway, the cartridge is turned askew; Fig. 10, before being acted upon by the pusher 52. The invention is shown applied to a belt in which the stitching separating the loops extends completely across the belt, but the invention is also applicable to belts in which the stitching stops short of the entry edge, in which case an attachment 110, Fig. 6a, is provided to separate the entry edges of the belt. The pusher 52, Fig. 4, is reciprocated by an eccentric 62 and links 55, 59, the belt being fed step by step between guides 111 from left to right, Fig. 5, by a member 69 grooves 70 in which engage the cartridges in the loaded belt C. The member 69 is moved by a cam-operated lever 74 through arm 68 a roller 79 on which engages a further cam to lower the member 69 for spring-operated return movement. To permit insertion of a cartridge the belt is gripped by members 81, 82 on spring-controlled arms 84, 83 operated by the engagement of a roller 104, Fig. 1, on a cam-operated lever 92 with interned arms 103 on the grippers. To open the pockets the belt is fed slightly forwards from the position shown in Fig. 10 by serrated member 95, Fig. 5, on cam-operated lever 97 this member being pressed upwardly by roller 107 on arm 83. The machine is operated by a hand or electric power driven shaft 14, Figs. 1 and 4, which is geared to the shaft 64 carrying the various controlling cams. The drive is automatically stopped when the belt is fully charged by an electric contact bar 120 which engages a metal member on the belt to break the circuit through the driving motor. Specifications 521,176, [Group XVII], 539,365 and 555,939 are referred to.
Patent GB-709766-A (GB)
Title: Improvements in or relating to driven tractors having power lift arms
IPC: A01B59/00
Filed: 1952-01-23
Abstract: 709,766. Agricultural implements. TAYLOR, J. H. Jan. 23, 1953 (Jan. 23, 1952], No. 1846/52. Class 6 (1). [Also in Group XXX] A device for relieving a tractor hydraulic power lift of the weight of a raised implement comprises a bracket 1 attached to the tractor and provided with a transverse member in which a pair of bolts are slidably mounted. The arrangement is such that when the implement is raised the lift arms 14 abut against the chamfered ends 4a, 5a of the bolts forcing them inwards, the bolts snapping back when the implement is fully raised. The power lift is reversed or released and the arms 14 rest on the bolts. As shown the bolts are formed with racks which engage a pinion provided with a handle 8 which is connected by a tension spring 12 to the member 3 by means of eye bosses 3a on one side or other of the pinion so that the bolts 4a, 5a may be maintained projecting beyond the ends of the member 3 or may be retracted.
Patent GB-791283-A (GB)
Title: Process for the manufacture of highly polymeric polymethylene terephthalates
Inventor: MUNRO NEIL
IPC: C08G63/87
Filed: 1955-01-21
Abstract: In a process for making highly polymeric polymethylene terephthalates, discoloration of the polyester is prevented by adding a trivalent phosphorus compound during the polycondensation reaction at a stage when the condensation is 30 to 60 per cent complete as measured by the power necessary to turn the agitator in the polyester melt.  The polyesters derived from ethylene or tetramethylene glycol are preferred.  The trivalent phosphorus compound may be phosphorous acid, an organic ester or a salt thereof or an organic ester of thiophosphorous acid.  In an example, ester-interchange was effected between dimethyl terephthalate and ethylene glycol in presence of zinc acetate and antimony oxide and the product polycondensed, either phosphorous acid or triphenyl phosphite being added during the polycondensation.  Specifications 588,833, 588,834, [both in Group IV], and 770,531 are referred to.
Patent GB-252669-A (GB)
Title: Improvements in moulders' flasks
IPC: B22C21/00
Filed: 1926-01-22
Abstract: 252,669. New Process Multi-Castings Co., (Assignees of Wood, J. R.). May 29, 1925, [Convention date]. Flasks.-The cope 1, Fig. 4, of a flask, intended to be removed, with the drag 2, from the mould 45 when completed and assembled, is provided with mould retaining ribs 15 which can be withdrawn into recesses 10 when desired. Each rib is connected to two slides 18, Fig. 1, engaged by levers 24 on a shaft 20. Two of the shafts 20 are operated by handles 28, the other two being operated from the first by bevel gears 27. Mould jackets.-The Specification as open to inspection under Sect. 91 (3) (a) states that the mould is supported during pouring by a jacket described in Specification 252,670. This subjectmatter does not appear in the Specification as accepted.
Patent GB-825626-A (GB)
Title: Improvements in or relating to rail vehicles
IPC: B61F5/04
Filed: 1956-01-23
Abstract: 825,626. Bogies for rail vehicles. SCHWEIZERISCHE LOKOMOTIVUND MASCHINENFABRIK. Jan. 23, 1956 [Feb. 15, 1955], No. 2135/56. Class 103(6) In a rail vehicle comprising two end bogies guiding the vehicle body and at least one intermediate bogie having a swing bolster and which is transversely movable relative to the vehicle body, the bolster is arranged for transverse movement relative to the intermediate bogie and to the vehicle body and connecting means are provided between the body and the bolster so that the transverse displacements of the bolster amount to a fraction of the transverse displacements of the bogie with respect to the vehicle body. In the arrangement shown in Fig. 3, longitudnal beams 6 on the vehicle body 1 are mounted on a transom 15 which is supported from beams 17 on the intermediate bogie frame by rods 31 suspended from a swing bolster 28 supported by springs 18 and links 19. Traction and braking forces are transmitted to the transom 15 through a pivot 21 provided on a transverse part 20 of the bogie. The pivot has a block 26 which is adapted to slide in a slot 27 in the transom 15. In a modification the rods 31 are dispensed with and the swing bolster 28 supports the vehicle body 1 by rubber supports. Lateral movement b of the bolster 28, occasioned for example when the vehicle rounds a curve, has a predetermined ratio to the lateral displacement a of the bogie. The beams 17 are supported as shown in Fig. 6 on axle boxes 23 by springs 22. Figs. 5, 6 and 7 show an arrangement in which the vehicle body 1 is supported on the bolster springs 18 by means of the transom 15 and sliding or rolling guideways 29. The part 20 of the bogie frame has an arm 36 to which is pivotally connected a lever 35 connected by a rod 37 to the transom 15 and by a rod 38 to the bolster 28. The lever 35 need not necessarily be horizontal. The end bogies of the vehicle may be of the same construction as the intermediate bogie.
Patent GB-966763-A (GB)
Title: Improvements in and relating to cathode ray tubes
IPC: H01J29/32
Filed: 1961-01-19
Abstract: A conductive film of stannous oxide may be formed on the inner surface of a glass cathode-ray tube envelope by application, by brushing, swabbing or flowing, of a solution of 1-12 gms. of anhydrous stannous chloride in 100 ml. of n-propyl acetate and heating to 415  DEG C. for 10-15 minutes or to 250-300  DEG C. for 1/2 hour.  A concentrated solution may be prepared by filling a bottle with 50 gms. of anhydrous stannous chloride, ground to a fine powder, and 150 ml. n-propyl acetate and rolling for about 8 hours before filtering.  Anhydrous stannous chloride may be formed from stannous chloride dihydrate by dehydrating and fusing by heat. Alternatively the film may be formed by application of a solution of stannous chloride in an alcohol such as glycerol, ethylene glycol or triethylene glycol at room temperature and subsequent heating up to about 415  DEG C. Specification 857,451 is referred to.
Patent GB-697346-A (GB)
Title: Improvements in or relating to the cutting of saw-teeth in circular saws
IPC: B23D65/02
Filed: 1951-01-29
Abstract: 697,346. Copy-milling. SMAL, G. Jan. 29, 1951 [Feb. 3, 1950], No. 2223/51. Class 83 (iii). A method of cutting saw segments of circular saws P consists in cutting the teeth by a cylindrical tool 1 rotating about a generally horizontal axis A which is itself given a movement about a centre C on said axis. The milling-cutter 1 is carried on a spindle containing a universal joint C so that the movement of the cutter may be controlled by cams 3, 31. The path of movement is illustrated in Fig. 2. In a modification, the cutter-spindle 4, Fig. 7, is mounted on a table 13 rocked about perpendicular pivots 11, 12 by cams 18, 19. The saw-blank is clamped on a bell-crank 27, by a jaw 29, and is positioned by a gauging-stop 34. A screw 40 adjusts the height of the bellcrank pivot 28 and the saw is indexed by a pawl 36 and hand lever 39.
Patent GB-231792-A (GB)
IPC: A45D24/06
Filed: 1925-01-24
Abstract: 231,792. Idell, W. Aug. 12, 1924, [Convention date]. Combs, hair.-A folding pocket comb comprising a number of hinged sections is fixed in the extended position by a hinged sectional locking bar sliding in the hollow back of the comb, the distances between the hinges of the comb being the same as that between those of the bar. The comb sections 1, 2, 3, Fig. 1, are mounted in metal fittings 4, 5, 6 bent into U-shape so as to form guide channels within which slides the locking bar comprising sections 12 - - 14 hinged together by means of links 15, 16 pivotally mounted in slots at the abutting ends of the sections. A knob 17, the stem of which passes through a slot 18 in the fitting 6, is secured to the rod section 14. The comb sections are united by hinges 10. 11, and the centre section 13 of the locking bar corresponds in length to the centre comb section 2, so that when the bar is shifted by means of the knob 17 to bring the links 15, 16 over the hinges 10, 11, the. comb can be folded up. Fig. 5 shows a section on the line B-B in Fig. 1 but with the comb folded. The links 15, 16 slip into slots 19, 20 cut in the fittings 4 - - 6. The hinges 10, 11 may be provided with springs tending to cause the comb to assume the extended position. Any number of comb sections may be employed, and the number of rod sections may be less by one than the number of comb sections.
Patent GB-1031395-A (GB)
Title: Improved buoyant hose
IPC: F16L11/20
Filed: 1965-01-19
Abstract: 1,031,395. Buoyant pipes. CONTINENTAL GUMMI-WERKE A.G. Jan. 19, 1965 [Feb. 10 1964], No. 2251/65. Heading F2P. A buoyant hose pipe 1 is enclosed by an air container 2 in the form of an expansible hose having coil-like inserts or external supports 3 of substantially inexpansible materials, which expansible hose in the pressure-less state is flatly supported on the outer jacket of. the hosepipe and when inflated with compressed air is lifted off the hose pipe. The external supports may comprise helical steel wire externally of the container or embedded in the container or may comprise a textile flat hose in which are embedded cord filaments, the hose being embedded in the wall of the container. Additional reinforcements in the wall of the container may comprise individual filaments extending parallel to one another in the longitudinal direction of the container, and may be limited to the region between adjacent turns of the reinforcement 3 (Fig. 5) or may extend the length of the container (Fig. 8).
Patent GB-627742-A (GB)
Title: An improved process for hardening fatty oils by elaidination
IPC: C11C3/14
Filed: 1947-01-25
Abstract: Fatty oils are hardened by elaidination, the process comprising treating the oil with sulphur dioxide at 50-150 DEG  C. in the presence of an inert organic oil solvent and thereafter cooling the mixture to crystallize the higher melting fraction of the product. The organic solvent must be inert to both oil and sulphur dioxide and of such a nature that the mixture does not separate into two layers after treatment of the oil with sulphur dioxide and cooling. Benzene, chloroform, ethyl acetate and methyl propionate are suitable solvents while acetone is not. After the separation of the higher melting fraction, the liquid fraction may be subjected to further elaidination, followed by cooling to effect further crystallization. The crystals may be removed by filtration, the crystallization and filtration being conducted under pressure.  The oil may be pretreated with nitrogen at an elevated temperature in order to remove peroxides.  In an example olive oil is pretreated with nitrogen for over an hour at 220-225 DEG  C. and then elaidinated by heating with chloroform and sulphur dioxide for 2 1/2 hours at 110-115 DEG  C. at a pressure sufficiently high to maintain the sulphur dioxide and solvent in the liquid state.  The mixture is then cooled to - 15 DEG C. and the crystals filtered off.
Patent GB-594635-A (GB)
Title: Method for the centrifuging of aqueous rubber dispersions
IPC: C08C1/10
Filed: 1941-02-21
Abstract: Stabilized, concentrated rubber latex is produced by centrifuging latex containing a solution of a fatty acid or fatty sulphonate in such quantity that after centrifuging the mechanical stability is increased to at least a value of 15 minutes as measured by a Hamilton-Beach stirrer.  The preferred stabilizing agents are 50 mils of 5 per cent. soap solution, or 25 mils of such soap solution together with 10 mils of 10 per cent. casein-borax, or 25 mils of such soap solution with 10 mils of a 5 per cent. fatty sulphonate, each added to one litre of latex. The stabilizer may be added before or during centrifuging. Specifications 219,635, [Class 70], and 445,541, and Netherlands Specification 47,691 are referred to.
Patent GB-871546-A (GB)
Title: Card transferring apparatus
Inventor: HAYES ROBERT M
IPC: G06K13/08
Filed: 1958-01-24
Abstract: 871,546. Statistical apparatus. MAGNAVOX CO. Jan. 24, 1958, No. 2409/58. Class 106 (1). [Also in Group XVI] Record cards 10 can be separated sequentially from a card holder 160 by a rotating suction drum 20 (see Group XVI), fed past a transducing member 150, and stacked in a card holder 162; or cards can be separated from the holder 162, fed past a transducing member 152, and stacked in the holder 160. The holders 160, 162 are identical, and can be adapted for stacking or separating by a simple manual sliding of members 88, 124 which are connected together for simultaneous movement over a table 22. Each record card 10 is provided with digital or other information either in the form of perforations, or in magnetic form by magnetically polarizing one of both faces of the card. The drum 20 rotates about a vertical axis 36 and has an outer face which is wider than the width of a card 10 and slotted to communicate with the interior of the drum. The interior of the drum is connected to a vacuum pump or other source of suction.
Patent GB-227636-A (GB)
Title: Process and device for the production of enamel-like coatings on the parts of artificial teeth which consist of india rubber or of metal
IPC: A61C13/20
Filed: 1924-01-30
Abstract: 227,636. Oberlõnder, L. Jan. 30, 1924. Enamelling stoves.-In a stove for hardening the enamel coating of a vulcanite denture, the denture, after'receiving the coating enamel, is placed in a holder mounted on a spindle 12 within a closed chamber 1. The spindle is rotated continuously by a handle 17 under an air pressure of about six atmospheres at a temperature of about 80‹ C. maintained by a gas burner 3.
Patent GB-123081-A (GB)
Title: Improvements in or relating to Apparatus for Electric Wave Transmission, particularly applicable to Telephony.
Inventor: EHRET CORNELIUS DALZELL
IPC: H04J1/00
Filed: 1919-02-01
Abstract: 123,081. Ehret, C. D. Feb. 1, 1918, [Convention date]. Amplifying systems; exchange systems; alternating-current systems.-Telephony or signalling between stations upwards of 100 miles apart is effected over line conductors of high-resistance, amplifiers C<1> being arranged at points a plurality of wave lengths apart. The speech or signal waves are preferably impressed upon highfrequency current from a generator g. The resistance of the conductor is at least 25 ohms per mile for pole line and 50 ohms per mile for cables, and currents of frequencies from 20,000 to 200,000 cycles per second are used. The amplifiers, preferably of the audion or thermionic type, may be from 50 to 200 miles apart. The lines may be loaded with inductances l, inductive or non-inductive leaks k being arranged as shown in Fig. 4. The source of high-frequency current g' may be connected to line at a point mid-way between the terminal stations. Each station may be supplied with high-frequency transmitting- apparatus of the kind described in Specification 102,503, [Class 40 (v), Wireless signalling &c,], in which energy is supplied to the line only when the microphone. is affected by speech or sound waves.
Patent GB-1534967-A (GB)
Title: Fuse devices
IPC: H01H85/20
Filed: 1976-01-23
Abstract: 1534967 Overload protection arrangements SIEMENS AG 23 Jan 1976 [28 Feb 1975] 02586/76 Heading H2H [Also in Division H1] An overload protective device for the wires of subscriber lines of a telephone switching system comprises a first contact 11 which is connected to earth, a second contact 5 and a surge voltage arrester 1, one electrode 2 of the arrester being connected to the first contact and the other electrode 3 of the arrester being connected to the second contact via a fuse 4. A row of ten contacts 5 is embedded in an insulating carrier 9 and the ends 13 of the contacts engage the subscribe line wires when the protective device is inserted in a distributor of the telephone switching system. A row of ten contacts 11 forms a U-shaped holder 6 which is made of metal. Upon the occurrence of a prolonged overload on a wire, the associated fuse 4 melts causing the respective contact 11 to engage a portion 12 of the respective contact 5. The wire having the overload is therefore earthed and the displaced contact 11 provides a visible indication of the earthed contact.
Patent GB-675278-A (GB)
Title: Gelling agents for vinyl polymers
IPC: C08L27/06
Filed: 1949-01-31
Abstract: A gelling or solvating agent for vinyl polymers comprises a resin derived from a butadiene derivative which contains, in the 1-position, a cyanogen group and an esterified carboxyl group, and which may be alkylated in the 4-position.  Specified vinyl polymers are polyvinyl chloride, copolymers of vinyl chloride, polyvinyl acetate and polyvinyl alcohols.  Rubber may also be intermixed with the gels as described in Specification 665,125. The vinyl resin may be mixed with a liquid low polymerized butadiene derivative and the gel obtained by addition of an alkaline accelerator at the end of the mixing, when, with the application of heat, the low polymer resinifies.  In the example, a hard gel is obtained by mixing on a roller up to a temperature of 160 DEG  C., polyvinyl chloride in a ratio of 1 : 1 with a resin obtained by the polymerization in an alkaline medium of a -cyanosorbic isobutyl ester.