baber/WOPTO huggingface dataset:
Patent GB-1090838-A (GB)
Title: Process for preparing unsaturated copolymers
IPC: C08F297/08
Filed: 1965-05-31
Abstract: An unsaturated copolymer is produced by copolymerizing a mixture of at least one alkene-1 of the formula R-CH=CH2 where R represents hydrogen, an alkyl, aryl, aralkyl or alkaryl group, or a cycloalkene, and at least one hydrocarbon with more than one double bond, in the liquid phase using a co-ordination catalyst containing an organometallic compound of a metal of Groups I to III or IVb and a compound of a heavy metal of Groups IVa to VIIa or of Group VIII of the Mendeleef system, the process being characterized in that the catalyst components are mixed in a liquid medium in the presence of such an amount of a soluble unsaturated polymer, e.g. the copolymer, polybutadiene, or polyisoprene, that no precipitate is formed and are then passed into the polymerization zone.  The Specification includes lists of alkenes-1, and hydrocarbons with more than one double bond. Preferably, all or part of the monomers, in the ratio in which they have to be passed into the reaction space, are also mixed with the catalyst outside the polymerization zone.  The preferred catalyst comprises an organo aluminium compound and a vanadium compound. Lewis bases may also be present.  The polymerization is preferably carried out in a continuous manner.  The polymerization may be carried by passing the mixture of catalyst components and the monomers through a pipe of suitable length, the mixing of the catalyst components, the unsaturated polymer and the monomers being carried out in the first part of the pipe and the polymerization in the second.  In the examples, copolymers of ethylene and propylene with dicyclopentadiene or cyclooctadiene are formed.  In one example, the polymerization is carried out in a closed circuit with gasoline, ethylene and propylene being circulated and aluminium ethylsesquichloride, vanadium oxytrichloride and dicyclopentadiene, all dissolved in gasoline, fed into a blender and then into the closed circuit.
Patent GB-517701-A (GB)
Title: Improvements in or relating to telegraph transmitters
IPC: H04L25/04
Filed: 1938-08-05
Abstract: 517,701. Type-printing telegraphy. CREED & CO., Ltd., and SALMON, R. D. Aug. 5, 1938, No. 23208. Addition to 454,593. [Class 40 (iii)] Relates to telegraph transmitters described in Specification 454,593 in which a selector lever positions a transmitting contact tongue by means of an intermediate lever formed with a knife edge which is adapted to strike, under the control of a cam, against a co-operating knife edge associated with the transmitting contact tongue, means being provided for holding the contact tongue in the position into which it was last moved. According to the present invention, a jockey roller, operating as the means for holding the contact tongue, has pressure exerted on it partly by a spring having a high ratio of force to displacement and partly by a spring having a low ratio of force to displacement. The jockey roller J is mounted on a spindle 20 in a fork at the end of a leaf spring 11 pivoted on a spindle 19 carried by a lever 14 pivoted on a fixed block at 15. To the inner end of the leaf spring 11 is attached one end of a coil spring 12 whose other end is fixed to a bracket 13 on the lever 14. The combination of the two springs 11, 12 produces the necessary downward thrust on the jockey roller J. The position of the roller J relative to the contact tongue C is adjusted by means of a screw 22 abutting against a fixed stop 17 the two being held in contact by a spring 16. The means for actuating the contact tongue is as follows :-Combination bars CB, selectively set by depression of a key may, or may not, be moved to the left to come under the horizontal arms of pivoted bell cranks SL which are successively released, so as to tend to be moved by springs 3, on the rotation of cams SC. When so released a crank SL, not held by a bar CB, moves clockwise and tilts anti-clockwise a frame A on a pivot 4 so sliding a bar 6 to the left against the action of a spring 5. The further end of the bar 6 is carried in an extension 7 of a frame 8 on a pivot 9, this frame 8 carrying an arm B which engages a cam wheel F on the same shaft as the cams SC. When the bar 6 has been set by a crank SL the arm B is depressed by the wheel F, so raising the bar 6, and then rapidly released so that, under the action of a spring 10, a knife edge D on the bar 6 is brought forcibly into engagement with a similar knife edge D<1> on the contact tongue C pivoted on a spindle 18. The set position of the bar 6 determines the direction in which the tongue C is moved.
Patent GB-727547-A (GB)
Title: Improvements in or relating to autographic stereo-photogrammetric plotting devices based on the deville principle
IPC: G02B23/10
Filed: 1953-08-24
Abstract: 727,547. Stereo-photogrammetric apparatus. NISTRI, U. Aug. 24, 1953 [Sept. 5, 1952], No. 23300/53. Class 97 (1). In a stereo-photogrammetric plotting device of the type in which a stereoscopically reconstructed image obtained by viewing two photographs with binocular vision is scanned by the " fused " image of two movable plotting marks which are viewed like the photographs, with binocular vision and moved so that their " fused " image moves towards or away from the observer, each mark is associated with a movable collimator projecting parallel light from the mark towards a semi-transparent mirror located in front of the objective of the associated camera for projecting one of the photographs, and is so set at an angle of 45 degrees to the axis of the collimator as to reflect light from the camera in a direction perpendicular to such axis and light from the collimator in the opposite direction, a prism with three mutually perpendicular reflecting surfaces being provided for redirecting light reflected from one side of the mirror parallel to the direction of incidence and in the same direction as that of light reflected from the other side. As shown, light from the mark 4 is collimated by lens 2, 3, which may form a pancratic system, is reflected by the mirror 5 on to the prism 7 which directs it back through the mirror to coincide with the beam from the camera 1 reflected by the other surface of the mirror 5. The entrance surface 9 of the prism may be inclined to the incident beam to avoid the formation of parasitic images. Specification 707,459 is referred to.
Patent GB-388071-A (GB)
Title: Improvement in or relating to television systems
IPC: H04N3/10
Filed: 1931-08-19
Abstract: 388,071. Television. COMMUNICATION PATENTS, Inc., 60, Broadway, New York, U.S.A. Aug. 19, 1931, No. 23347. Convention date, Dec. 30, 1930. [Classes 39 (i) and 40 (iii).] A television system is adapted for "panoramic " transmission by utilizing a scanning device arranged to analyse an area extending in an arc which subtends more than 180‹ at the centre of the scanning device and in some cases extending completely around the scanning device, whilst employing at the receiving end a plane screen for the reproduction of the view or scene. The scanning device includes a system of rail electrodes 6, arranged to form a cylindrical surface with a moving arc controlled as described in Specification 360,470. The electrode system is surrounded by a cylinder 9 of a honeycomb structure with tapered apertures allowing successive elemental beams to pass to the view or scene from which light of varying intensity is reflected to one or more photo-electric cells 15, 16 connected through an amplifier 21 to the line. At the receiving end, the " panoramic '' picture is reproduced on a plane electrodynamic arc screen 38. The system is synchronized as described in Specification 360,470 and the sources 13, 22 providing the controlling potentials for the arc screen 5, may be d.c. or a.c. as described in Specification 360,941.
Patent GB-818853-A (GB)
Title: Improvements relating to axle drive units for rail vehicles
IPC: B61C9/38
Filed: 1957-07-24
Abstract: 818,853. Vehicle driving gear. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. July 24, 1957 [Aug. 1, 1956], No. 23398/57. Class 79(2) [Also in Group XXIV] Relates to change-mesh change-speed gearing (see Group XXIV), in a rail vehicle drive unit. In one form, a twoaxle bogie comprises two transversely mounted motors of which one only, 2, Figs. 1, 3, is shown, each driving through its own train of change-mesh gearing 13, &c. to an axle 8. The gearing is suspended by a rod 10 from the transverse frame member 11 of the bogie. In another form. a two-axle bogie has a single transversely arranged motor 2, Figs; 5, 7, driving through two separate trains of changemesh change-speed gears 18. &c. to the two axles 8. The rail vehicle body is supported at its side on springs 30 and connected to the bogie by rods 32. Specification 632,608 [Group XXIV] is referred to.
Patent GB-290878-A (GB)
Title: Improvements in pressing machines
IPC: D06F71/06
Filed: 1927-09-06
Abstract: 290,878. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Sept. 6, 1927. Fluid-actuated valves.-Relates to the control valve mechanism of a laundry or garment-pressing machine in which the straightening of a pair of toggle links 10, 11 closes the press and subsequently applies heavy pressure, and in which the means for operating the toggle comprise two pistons 18, 19 on a common rod 17 and working in cylinders 16, 15 of different sizes, fluid pressure being admitted first to the smaller piston to close the press and subsequently to the larger piston to apply the final heavy pressure. Two valves control the admission of operating fluid to the cylinders, the arrangement being such that both hands of the operator are required to hold the valves open whilst the press is closing, but automatically-operated power means are provided for maintaining the valves open during the application of the heavy pressure. The fluid supply pipe 33, Fig. 2, communicates with a valve chest 31 having a slide valve 40 operated by a rod 44. The outer ports of a' series of five lead to a second valve chest 51 also provided with a slide valve 56 and operating rod 59. The slides are biassed by springs 43, 58 to the right-hand position, and in order to subject the upper face of the piston 19 to effective fluid-pressure, both slides must be moved to the left and maintained in that position. As shown, if the operator does not maintain the slide 56 in the left-hand position, communication between the upper face of piston 19 and the supply pipe 33 is broken, whilst if the slide 40 is not maintained at the left-hand position the upper face of piston 19 is put into communication with the exhaust port 39 in the valve chest 31 through pipe 84, 83 and a recess 71 in the slide 40. A valve 82 passing fluid in the direction of the arrow, Fig. 2, only is provided in the exhaust of the larger cylinder. After the piston 19 has passed the port 75, fluidpressure is admitted through this port to the upper face of the larger piston 18, the port 75 corresponding to the safely closed position of the press. Fluid pressure is also admitted at this time by a pipe 115 to a third valve chest 102. The manual moving of the slides 40, 56 to the left moves the slide valve 106 in the third valve chest to the right to cut off the exhaust port 120 and to put the fluid-pressure in pipe 115 into communication with the right-hand faces of pistons 93, 97 mounted on the operating-rods 44, 59 of the slides 40, 56 and working in cylinders 90, 95 concentric with the rods. The fluid-pressure, being greater than the force of the springs 43, 58, maintains the valves 31, 51 open. The press is opened by the operator moving the slide valve 06 to the left, thereby exhausting the cylinders 90, 95 and permitting the springs 43, 58 to restore the valves 31, 51 to the position shown in Fig. 2 in which the under surface of the large piston is under fluid pressure through the pipe 33, valve 31, pipes 65, 38, valve 51 and pipe 80.
Patent GB-675981-A (GB)
Title: Improvements relating to paper guide bails for typewriters
IPC: B41J13/20
Filed: 1949-09-12
Abstract: 675,981. Typewriters &c. HOLLAMBY, W. Sept. 12, 1950 [Sept. 12, 1949], No. 23493/49. Class 100 (iv). A paper guide bail for a typewriter is formed by a single length of bent metal rod and comprises, a portion 13 carrying rollers 14 extending axially with the platen, two rearwardly bent portions 13a each having an outwardly directed foot 12 forming a part of a hinge connection with a pair of brackets 1 attachable to the typewriter frame, and springs 10 connected between a cranked extremity 11 of each foot 12 and a lug 8 formed at the end of a depending portion 7 of each bracket 1. Each bracket is formed by a metal stamping with one limb 2 doubled over to make the other part of the hinge connection.
Patent GB-429455-A (GB)
Title: Improvements in and relating to multiple wire drawing machines
IPC: B21C9/00
Filed: 1934-08-15
Abstract: 429,455. Drawing wire. NACKEN, W., 38, Chemnitzer Strasse, Gr³na, Saxony, Germany. Aug. 15, 1934, No. 23544. [Class 83 (iv)] In a multiple wire-drawing machine of the type wherein the drums and dies are carried in a container filled with cooling liquid, the supply of liquid to the container is effected at the points of engagement of the dies with their holders. Cooling and cleaning of the dies is thereby ensured. A drawing-machine comprises a base 1 housing the driving-gearing 4, 5 for the shafts 6 of the drums 7, and a container 8 spaced therefrom and containing the drums 7 and the dies, and being filled with coolant beneath which the drums and dies are submerged. The container 8 is partitioned into chambers each containing two drums and a die-stand, liquid initially overflowing from one chamber to the next, while individual chambers may be kept dry at will by the provision of drain cocks. The container 8 or individual chambers may be raised and lowered to remove the liquid from the drums during threading. During the drawing operation the liquid is delivered at the bearing-points of the dies, the supply of the liquid from a container 31 by a pump 32 being controlled by a multiple-way cock 34, 35. The die-holders may comprise pedestals 15, 16, Fig. 5, having recesses 17 carrying the dies, and passages 20 communicating with the hollow interior, to which the liquid is supplied. In a modification, liquid is supplied from pipes 21, 22, Fig. 8, to within a box 23 and passes through apertures 24 to the dies. A plate 43, Fig. 12, may be provided to prevent the formation of funnels in the liquid and consequent dry running, caps 42 covering the projecting parts of the drum assemblies, and pipes 44 leading therefrom to the lower surface of the plate. When the drums are completely submerged the caps 42 are dispensed with, and a similar arrangement is described wherein the gearing is housed above the tank in which the drums are mounted. The plate 43, and also the box 23, may be hingedly mounted. The drums are of bell shape and are mounted over tubular members 41, secured in a fluid-tight manner to the bottom of the container. To prevent the liquid flowing up too far between the drum interior and the tubular member, radial grooves are provided on the lower face of the drum and a ring is formed on the base 9 so forming a narrow gap through which the liquid tends to be forced under centrifugal force from the interior of the drum.
Patent GB-486101-A (GB)
Title: Arrangement for indicating and measuring of low revolution numbers
IPC: G01P3/44
Filed: 1936-08-27
Abstract: 486,101. Electric signalling systems. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 27, 1936, No. 23553. Void. Convention date, Aug. 28, 1935. Drawings to Specification. [Class 40 (i)] [Also in Group XXXV] Apparatus indicating and measuring low speeds, such as speedometers, is operated by a polyphase tachometer generator energized by a single-phase current or with an unsymmetrical polyphase excitation. This produces a superposed impulse of a frequency sufficient to overcome static friction in the measuring or indicating device.
Patent GB-262878-A (GB)
Title: A process of manufacturing superphosphate
IPC: C05B17/00
Filed: 1925-09-22
Abstract: 262,878. Bodrero, B. Sept. 22, 1925. Manures. - Natural calcium phosphates are washed to remove carbonate and then mixed with sulphur, and the mixture is maintained at 40- 50‹ C. in drying-apparatus such as silos or ovens, in which it is treated with jets of steam. Organic materials such as fresh bones, ground meat, or dried and ground blood may be added to the mixture.
Patent GB-754612-A (GB)
Title: Improvements in or relating to name transmitters for picture telegraphy
IPC: H04N1/32
Filed: 1954-08-13
Abstract: 754,612. Copying-telegraphy. SIEMENS & HALSKE AKT.-GES. Aug. 13, 1954 [Aug. 21, 1953], No. 23661/54. Class 40 (3). In picture telegraphy a transmitter for sending the name of the subscriber has a recording denoting the name of the station disposed on an annular portion independently of the picture to be transmitted, the portion being arranged to rotate with the picture drum of the transmitter and to be scanned spirally by the scanning member of the transmitter. As shown, the name &c. is carried on a drum 40 keyed on a shaft 36 driving the picture drum 38 which is scanned by a carriage 52 traversed by a pin 54 engaging a helical slot 51 on a shaft 49. For the transmission of the name, the carriage 52 is held by the engagement of the pin 54 with a slot 50 in the shaft 49 and the drum 40 is advanced by a rod 47 engaging a cam 45 on a shaft 44 driven by gears 42, 43 from a motor 34. During picture scanning, with the carriage 52 moved to the right, a projection 56 releases a lever 58 biased by a spring 59 which engages a notch 60 in the rod 47 so that the drum 40 is retained in its righthand position. The shaft 44 on which the cam 45 is mounted carries a disc 76 connected by a torsion spring 77 to a disc 78, and after initial rotation a pin 80 on the disc 78 engages a pin 81 on the disc 78 which is positively driven against friction exerted by jaws 79. On the reception of the signal requesting the transmission of the name of the station, a magnet 61 is energized, releasing a bracket 63 carrying the shaft 44 which drops and disengages gears 42, 43 so that the cam 45 is returned to its normal position by spring 77. At the same time a disc 74 on the shaft 44 engages a spiral disc 67 which is driven by shaft 72 from a shaft 70 when an extension 64 on the bracket 63 releases a drop arm 66 on the disc 67 and the shaft 44 is again raised so that the gears 42, 43 re-engage and the bracket 63 is latched in its upper position by the released armature 62 of the magnet 61. If it is - desired to provide a single transmission of the designation, a switch 83 closed by movement of the drum 40 operates a relay to terminate the signal transmission. A diagrammatic representation of a combined transmitter and receiver is described in connection with Fig. 1 (not shown).
Patent GB-480757-A (GB)
Title: Improvements in liquid level indicators
IPC: G01F23/00
Filed: 1936-08-28
Abstract: 480,757. Electric signalling systems. MULLER, J. Aug. 28, 1936, No. 23676. Convention date, April 16, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 1, 1937.] [Class 40 (i)] [Also in Group XVIII] A buoyant body 2 located in a guiding chamber 50 in a tank 1 is connected by an annulus 51 to a zone at or near the middle of a bellows 52, the upper end of which is attached at 53 to the tank and the lower end to a fixed depending rod 56. The movements of the annulus 51 are transmitted by a stirrup 59 to a horizontally-pivoted plate 61 carrying a ramp 62 which rotates a pivoted cage 63 carrying a roller 64 moving over a resistance 65. The variations in current passing through the resistance are recorded on a dial in terms of liquid volume. In Fig. 3, movement of the bellows is transmitted by member 60 to a pivoted member 67 carrying a truncated cone 69 moving over a helical resistance 70. In another modification, Fig. 4 (not shown), the movements of the annulus 51 compress a pile of graphite washers, the variations in the current through the washers being indicated as before. The arrangement of the bellows eliminates any effect due to pressure variations.
Patent GB-485259-A (GB)
Title: Improvements relating to electric switches employing mercury or other conducting liquid
IPC: H01H29/18
Filed: 1937-08-31
Abstract: 485,259. Mercury switches. CIANCHI, A. Aug. 31, 1937, No. 23733. Divided out of 481,289. [Class 38 (v)] A magnetically operated mercury switch comprises a sealed vessel 1, containing a body of mercury 2 in which floats a hollow plunger 3. This plunger is perforated at 9, the lower part thereby forming an insulating cup containing mercury 6, and it carries an armature of magnetic material 5 at its upper end, which armature is provided with projections 10 allowing the plunger freely to move only in a vertical direction. Two electrodes 4 and 7 are fused into the container making contact with bodies of mercury 2 and 6 respectively. Operation of the switch is effected by magnetic means, usually a solenoid 8, which, attracting the armature 5 moves the plunger vertically. Contact between the electrodes is made or broken when apertures 9 are below or above the level of mercury 2. Deleterious action of sparking on the container is prevented by a liner 11 of refractory material. Specification 351,830 is referred to.
Patent GB-263525-A (GB)
Title: Improvements in or relating to brake operating gear for motor vehicles
IPC: B60T8/24
Filed: 1925-09-24
Abstract: 263,525. Maxted, H. P. Sept. 24, 1925. Force-transmitting mechanism.-In brake-operating gear in which the pairs of wheels on the same side of the vehicle are differentially braked according to the steering, all four brakes are simultaneously applied by the rotation of a single cross-shaft mounted in fixed bearings, the front and rear brakes on the same side of the vehicle being connected together by powerdistributing devices mounted on the cross-shaft. Differentially-operated front-wheel brake mechanism is used such as described in Specification 191,500. The power-distributing devices may comprise spiders 10, Fig. 3, mounted at each end of the cross-shaft 3 operated by a lever 14 and a rod connected to a foot pedal. Toothed sectors 12 engaging one another are pivoted at 11 on the spider and are connected to the front and rear brake on one side of the vehicle by rods 7, 8, Fig. 4. Instead of the sectors 12. links may engage one another by a bolt and slot connection and the rods 7, 8 may be pivoted to parts of the links extended outside the pivots 11. The links may be connected to one another by a cross-link, and the rod from the foot pedal may be connected to an arm of the spider. This cross-link may be made double so as to encircle the cross-shaft 3 when the spider is not mounted at the end of the shaft. Varying powers may be distributed to the brakes by pivoting the rods 7, 8 out of line with the pivots 11. Fig. 12 shows a floating-beam equalizer having the floating beam 16, which is connected to the brake rods 7, 8, suspended from a crank arm 17 on the crossshaft 3. The foot pedal rod 4 is connected to the end of the arm 17. An adjustable stop 18 through the arm 17 abuts against the beam 16 when the arm has moved a, certain distance, and the braking power to the brakes is no longer balanced. Cable or chain transmission may be used passing round a pair of pulleys on diametrically-disposed arms on the shaft 3.