baber/WOPTO huggingface dataset:
Patent GB-702115-A (GB)
Title: Improvements in the preparation of vinyl chloride polymers
IPC: C08F14/06
Filed: 1952-05-23
Abstract: In a process for polymerizing vinyl chloride or mixtures of vinyl chloride with up to 20 per cent. by weight of a copolymerizable monomer, the reaction is terminated by adding a conjugated diene to the reaction mixture after partial conversion of monomer to polymer. The diene may be butadiene-1, 3, isoprene, chloroprene, 2, 3-dimethyl butadiene-1, 3, piperylene, cyclopentadiene, or 1-vinyl cyclohexene, and copolymerizable monomers specified are vinyl acetate, vinylidene chloride, methyl acrylate and methacrylate, dimethyl, diethyl and di-isobutyl maleate.  From 0.2 to 1 per cent. of the diene, based on the weight of monomeric vinyl chloride, may be added, preferably after 60 to 95 per cent. conversion.  Polymerization may be effected by a granular, bulk or emulsion polymerization process, preferably in the presence of a peroxygen or azo catalyst such as hydrogen peroxide, alkali metal persulphates, perborates and percarbonates, diacetyl, dibenzoyl, acetyl benzoyl and lauroyl peroxide, cumene and tertiary butyl hydroperoxide, alpha, alpha-azobisisobutyronitrile, and p-methoxybenzene diazo thio-2-naphthyl ether.
Patent GB-179939-A (GB)
Title: A mechanical shovel for earthworks and the like
IPC: E02F3/342
Filed: 1922-05-09
Abstract: 179,939. Soc. Anon. des Ateliers de Constructions de l'Oust. May 9, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Scoop-arm machines. - A mechanical shovel comprises a scoop 4 pivoted at 6 to parallel arms 7 which are mounted on a shaft 10 and are connected to cranks 15 and connecting rods 14 through the medium of plates 11 and preferably elastic connections 23; a further pair of arms 9 are pivoted at 8 to the scoop and at 12 to arms 13 pivoted on the shaft 10, the free ends of arms 13 being connected to connecting rods 17 and cranks 18, the latter being at approximately 90‹ to the cranks 15. The points 6, 8, 10, 12 form the corners of a parallelogram. In operation, the arms 7 oscillate the scoop between the positions shown, the downward movement being effected at a high speed, while the arms 9 rock the scoop about the pivot 6. The connecting rods 14 are adjustably connected to the plates by screws 22 to vary the depth of cut. Cams may replace the cranks and connecting rods. The crank shaft may carry a tappet sleeve adapted to operate a brake so as to stop the scoop in its extreme positions .
Patent GB-657925-A (GB)
Title: Improvements in or relating to oil vapour pumps
IPC: F04F9/00
Filed: 1949-05-17
Abstract: 657,925. Condensation pumps. DISTILLATION PRODUCTS, Inc. May 17, 1949, No. 13107. Convention date, June 4, 1948. [Class 71] An oil vapour pump comprises a vertical casing 10 having gas tight closures 18, 12 at its top and bottom, a boiler 22 disposed above the casing and heated e.g. by an electric element 28, a vapour tube 24 leading from a point near the top of the boiler interior through the top 18 to the casing interior, one or more nozzles 36, 38 connected to the vapour tube and having associated with each nozzle a diffuser 42, 44 adapted to be cooled e.g. by a water coil 60 and which is supported from the top 18 by struts 45, 58, and a conduit 72 inducting a pump 74 for returning fluid from the bottom of the casing to the boiler 22. This returning fluid is heated in a coil surrounding a duct 19 connecting the boiler 22 and casing 10. An annular skirt 46, 52 extends from each diffuser to an annular trough 50, 59 attached to the casing, said skirts and troughs coacting to form condensate traps.
Patent GB-131330-A (GB)
IPC: F41A25/02
Abstract: 131,330. Compagnie des Forges et AciÚries de la Marine et d'Homecourt. May 1. 1917, [Convention date]. Recoil apparatus.-Relates to apparatus having a pump arranged within the brake body, which supplies liquid from a reservoir to a fluid-tight chamber surrounding the pump barrel and connected to the brake cylinder. The invention consists in employing two packings acted upon by a common spring for rendering the said chamber fluid-tight. The pump barrel 1 is retained within the brake body 2 by a nut 3 against the pressure of a spring 6 which acts against packing- rings 7, 8 to provide a fluid-tight space 9 round the pump barrel. The pump plunger 12, actuated by a rack and pinion 14, draws liquid from a reservoir x through a suction valve 16 and delivers it through a valve 11 into the space 9 which leads through a passage 10 into the brake cylinder proper. The spring 6 facilitates removal of the pump.
Patent GB-602864-A (GB)
Title: Process for making unicolour and patterned multicolour tablets of ureaformaldehyde moulding powders
IPC: B29B9/00
Filed: 1941-10-13
Abstract: Moulding tablets suitable for moulding buttons &c. are made from aminoplast moulding powders, i.e. powders comprising a ureaaldehyde condensate and a cellulose or horn filler by moistening the moulding powder with a liquid aminoplast condensate until a pasty mass capable of maintaining its shape is obtained, shaping the mass by sliding pressure against a plain unformed support into cylindrical form, allowing the form to ripen until it loses its adhesiveness and then cutting the form into smaller shapes which are dried.  Multicoloured effects may be obtained by combining variously coloured forms into a roll under the sliding pressure, 200 gs. commercial aminoplast moulding powder is moistened with 500 gs. of a dimethylolurea solution concentrated to remove 20 per cent water.  The mixture is worked up by a sliding pressure, e.g. between rolls or by hand pressure against a plain support, and the form may be placed between cloths moistened with alcohol or water.  The form obtained after maturing is sliced into tablets.  The Specification as open to inspection under Sect. 91 describes also the use of a melamineformaldehyde moulding powder.  This subject-matter does not appear in the Specification as accepted.ALSO:Moulding tablets suitable for moulding buttons &c. are made from aminoplast moulding powders, i.e. powders comprising a urea-aldehyde condensate and a cellulose or horn filler, by moistening the moulding powder with a liquid aminoplast condensate until a pasty mass capable of maintaining its shape is obtained, shaping the mass by sliding pressure against a plain unformed support into cylindrical form or skeins, allowing the form to ripen until it loses its adhesiveness and then cutting the form into smaller shapes which are dried. Multi-coloured effects may be obtained by combining variously coloured forms into a roll under the sliding pressure.  200 gs. commercial aminoplast moulding powder is moistened with 500 gs. of a dimethylolurea solution concentrated to remove 20 per cent water. The mixture is worked up by a sliding pressure, e.g. between rolls or by hand pressure, against a plain support or between two cloths moistened with alcohol or water.  The form obtained after maturing is sliced into tablets.  The Specification as open to inspection under Sect. 91 states that the form may be moulded (a) in triangular moulds, (b) by placing different coloured forms side by side in a mould and then compressing, (c) by use of skein or jar presses having mouthpieces containing perforated discs, (d) by coiling a skein around a glass rod.  This subject-matter does not appear in the Specification as accepted.
Patent GB-131885-A (GB)
IPC: B60B9/20
Abstract: 131,885. Darche, A. A. A. Dec. 30, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Tyre attachments to rims. -The rim 10, Fig. 4, is provided with cut-out and curved-over portions between which depending portions 26 of the tread 27 are secured by pins 28. The tread may be provided with non-skid insertions of hard rubber.
Patent GB-711000-A (GB)
Title: Improvements relating to cases for cigarettes or cigars
IPC: A24F15/14
Filed: 1952-05-26
Abstract: 711,000. Cigarette &c. cases. SEEAR, A. H. Feb. 6. 1953 [May 26, 1952], No. 13274/52. Class 18 Cigarettes are ejected from a case by an element operated by a knob sliding in a slot in the side of the case. In one embodiment, the element 3 connects with a knob 4 sliding in a groove to eject the cigarettes through a door 1. In another form, the case is cylindrical, cigarettes being contained in an annular recess 12 and being ejected by an element 19 through an axial slot running the length of the case. The central space 16 may contain tobacco, &c. In both embodiments the element is connected to the knob by spring means to provide a friction drag on the element by forcing it against the wall of the case.
Patent GB-132929-A (GB)
IPC: G03B21/32
Abstract: 132,929. Kearton, C. Nov. 12, 1918. Kinematograph apparatus.-In apparatus in which abroad film is used and the pictures are obtained in transverse rows, the film is stepped transversely first in one direction and then back again by means of two screw-threaded shafts which are intermittingly rotated, the film-carrier being brought into engagement with the two shafts alternately at the end of each transverse movement. The film is also stepped forward at the end of each transverse movement. The frame carrying the film comprises an upper part 3, Figs. 1 and 2, carrying the supply roll 2, the sprocket wheel 4, the gate 58, 61, and the lower part 6 carrying the take up spool 5 and runs on rails 55, 57 The sprocket wheel shaft carries an oscillating frame 26, Figs. 4 and 5, with helical feathers 28, 29 which engage alternately with the screw-threaded shafts 15, 16. These screwthreaded shafts are geared together and are intermittingly rotated to step the film horizontally by Maltese-cross mechanism 20, 22 driven from a spring motor 25. At the end of each transverse movement of the film, the rotating cam wheel 37 operates linkworh to rock the plate 26, a projection 40 on the same cam wheel actuates the links 41, 44, and 47 and thereby rotates the sprocket shaft 12 to feed the film forward, and the shaped ends 53 of the take up spool engages a wedge 52 to rotate the take up spool 5. The shutter 64 is continuously rotated by gearing from the main shaft 23. A roller 89 mounted on the front part 58 of the gate kesps the film on the sprockets. The speed of running is controlled by a centrifugal governor 79 in conjunction with a starting brake-lever 83.
Patent GB-801925-A (GB)
Title: A new or improved closure cap
Inventor: HODSON ASHLIN
IPC: B65D41/04
Filed: 1956-05-01
Abstract: 801,925. Closure caps. CONTAINERS & CLOSURES, Ltd. Jan. 22, 1957 [May 1, 1956], No. 13321/56. Class 125(3). A screw cap closure of polystyrene has an integral tubular projection 13 on which is mounted an annular sealing member 15 of rubber, the lower end of the projection 13 being flared out to retain the member 15 in position.
Patent GB-133275-A (GB)
IPC: G03B23/10
Abstract: 133,275. Raikes, C. S. M. June 2, 1919. Changing apparatus.-Advertisements are optically projected on to a translucent surface forming the front of a chamber or on a screen near the rear of the chamber by a short-focus lens, the slides, films, &c., being mounted on a rotating disk automatically stopped at intervals. The disk 3 is driven frictionally by a wheel 6, and is fitted with a stud 5 for each slide 4. The wheel 6 carries a cam 11, and a catch 9 mounted on the chamber is spring-pressed towards the disk 3 and wheel 6 so as to lie in the paths of the cam 11 and of the stops 5. The 'rotation of the wheel 6 by an electric motor 7 brings the cam 11 under the catch 9 and raises it to clear the stud 5, whereupon the disk 3 travels round with the wheel 6 till the catch snaps back before the next stud 5 passes, thus holding the next slide 4 in position till the cam 11 once more comes round and repeats the process.
Patent GB-1196992-A (GB)
Title: Improved Floatable Structure
Inventor: REDSHAW LEONARD
IPC: E02B17/02
Filed: 1968-03-19
Abstract: 1,196,992. Subaqueous structures; lighttowers. VICKERS Ltd. 17 March, 1969 [19 March, 1968], No. 1335/68. Headings E1H and E1A. A floatable well-head-platform structure comprises a column 1 that is freely-floodable and houses a tubular trunk 15 supporting a platform 8 and working deck 9, a base part 2 being furnishedwith a working chamber 13 that can be entered by personnel through the trunk and is surrounded by an annular floodable-buoyancy-chamber 7. To facilitate removal of the structure to and from the site of the well-head the chamber 7 can travel vertically and be secured to either the column or the part 2. The watertight baseplate 5 contains means of access (not shown) to the sea floor from the chamber 13 and may be wholly or partially removable to improve said access. Ring bulkheads 6 with radial webs 3 therebetween establish a seal about the aforementioned means of access. When the structure is in situ the chamber 7 is flooded through valves 17 and rests upon the part 2 as shown; and when the structure is to be removed the chamber 7 is partially charged with air by a compressor 11 so that it rises to the surface of the water. After being secured to the column the chamber 7 receives more air until it raises the structure above the sea bed, the column being subsequently lifted relative to said chamber by jacking mechanism (not shown) to reduce the draft of the structure. The base part may be capable of separation from the rest of the structure, in which case a conic spigot 20 and socket 19 are provided on said part and the trunk, respectively, and a further buoyancy-chamber 32 of horseshoe shape is provided to facilitate removal of the column I while leaving the base part in situ. Access hatches 16, 23, 28, 31 are provided as shown when the column is separable from the part 2 so that the latter can be left on the sea bed and the rest of the structure removed; otherwise the hatch 16 only is provided and located at the top of the chamber 13, Fig. 1 (not shown). Compressed air can be supplied to a chamber 24 through a pipeline 25 to form an air lock. Lead shot for ballasting purposes may be placed in the chamber 7 through a pipeline 18. Piles (not shown) may be arranged around the bulkheads 6 to minimize leakage thereat and may be driven by the structure as it descends and/or driving means incorporated in the structure. The structure may be adapted to deeper water by extension columns and trunks fitted when in situ. The structure may be modified for use as a lighthouse or tower, the trunk 15 and chamber 13 being used for storage purposes.
Patent GB-263390-A (GB)
Title: Improvements in machines for making blocks
IPC: B28B1/04
Filed: 1926-05-26
Abstract: 263,390. Heskett, A. J. May 26, 1926. Tamping-machines; moulds; feeding.-A machine for making concrete blocks comprises a hopper 27 reciprocated by power over a mould 11 - - 13, tampers 18 which are rendered inoperative as the hopper moves rearwardly and are released as the hopper moves forwardly, and a removable mould front 12 which may be lifted and rested above the mould by the movement of the hopper or by hand for processing the ends of the blocks. The mould consists of a pallet 11, movable front plate 12, a fixed rear plate 13, and sides 25, Fig. 5, slidable horizontally with blades 15 which are moved through slots in the rear plate by a crossbar 20 and piston rod of a cylinder 22. The front plate 12 may be lifted by handles 42, or mechanically by a chain 46 connected to the rear of the hopper. The feeding hopper 27 is actuated by a cylinder 50 and carries a strickler 30. The tampers 18 are operated by rotating arms 62 engaging arms 68 on the tamper rods 69. The tampers may be locked by spring latches 81, Fig. ti, mounted in the cross beam 74 and engaging notches in the rods 69; to release the latches, a beam 84 is moved outwardly and pulls on the heads 85 of the latches. The locking and release may be done automatically by a trip lever 93, Fig. 8, the lower end of which is pushed by a pin 91, Fig. 7, on the moving hopper guide 52, and the upper end of which turns a lever 95 bearing on pins 96 which push out the beam 84. To lock the tampers elevated, pivoted arms 101 behind the pins 91 are turned by a hand-operated link 102, thus freeing the lever 93 and allowing the beam 84 to be pushed outwards by springs 105, Fig. 3. The tampers may be released manually by cams 109 acting on the bar 72 and operated by arms 111 on a crossbar 112. A safety locking strap 120, Fig. 2, is fitted to engage under the tampers to prevent them from falling accidentally, and is pushed clear by arms 121 on the hopper.
Patent GB-966286-A (GB)
Title: Drilling apparatus
IPC: E21B4/16
Filed: 1963-04-04
Abstract: 966,286. Boring earth &c. INGERSOLLRAND CO. April 4, 1963 [April 9, 1962], No. 13371/63. Heading E1F. In a down-the-hole drill comprising a body 1, reciprocable bits 4, 5 at one end of the body, and a head 9 at the other end of the body adapted to be attached to a rotatable hollow drill rod 28, the head has passages 29, 30 for the supply of pressure fluid from the rod to this actuating mechanisms of the bits. The mechanisms are housed in casings 2, 3 which rotate with the head, and the bits 5 may be turned and fixed in different positions in their casings to compensate for bit wear.
Patent GB-497004-A (GB)
Title: Improvements in or relating to thermionic valve repeating arrangements
IPC: H03F3/52
Filed: 1937-05-11
Abstract: 497,004. Valve amplifying circuits. PERCIVAL, W. S. May 11, 1937, No. 13382. [Class 40 (v)] A repeating arrangement which provides a balanced output 9 from a balanced input 3 comprises a pair of valves each including an impedance in the anode cathode circuit which gives negative feedback. Fig. 1 shows an arrangement in which impedances 7, 8 are included in the cathode leads of the valves 1, 2 and have a large value compared with the reciprocal of the valve mutual conductance. The output line 9 may be connected directly between the cathodes and have an impedance of the same order as the reciprocal of the valve mutual conductance. The output between one cathode and earth only may be utilized and the output of the other valve used for monitoring, Fig. 4 (not shown). If the requirements are less rigorous for low frequency signals a common anode supply may be used, Fig. 2 in which case the anodes and cathodes are cross-connected by condensers 23, 24 and the impedances are divided between the anode and cathode circuits. In this case the output may be taken between the anode resistances 21, 22 or between the cathode resistances 7, 8 and an equalizer may be included in the circuit. Specification 448,421 is referred to.
Patent GB-134692-A (GB)
IPC: B62M7/00
Abstract: 134,692. Triumph Cycle Co., and Middleton, E. C. Jan. 2, 1919. Chain and like adjusters.-An adjusting-device for a belt or chain-driven vehicle in which the gear box is carried by vertical bolts passing through slots in the support, comprises a pinion E in mesh with rack teeth formed in a recess in the gear-box A. The pinion is carried on a spindle E<2> mounted in a bearing F in the support and surrounded by a spring G. A stop to limit the downward motion of the spindle consists of a removable spring collar H.
Patent GB-1465484-A (GB)
Title: High temperature thermal regenerators
IPC: F28D19/04
Filed: 1974-02-08
Abstract: 1465484 Thermal regenerators G APPLEGATE 8 Feb 1974 [21 March 1973] 13484/73 Heading F4K In a rotary matrix type thermal regenerator wherein the matrix rotor 3 is rotatable with a casing 1, the rotor is carried on a shaft 9 mounted for rotation in a water-cooled bearing or bearings (such as 10, 11) situated to one side only of the casing 1 and externally thereof. As shown, the bearings are mounted on a bracket 8 secured to the casing. In an alternative arrangement the shaft is hollow and is mounted for rotation about an internal bearing rod projecting into the shaft and forming a bearing therewith which is water cooled. The rotor 3 may be subdivided internally into compartments by radially extending partitions 22 which may be corrugated wholly or in part as indicated at 23 and 24 to accommodate expansion of the heat transfer material in said compartments. Such material may consist of a porous ceramic material (Fig. 4) which may be in layers. Or the heat transfer material may comprise any of the materials described in Specification 1,435,101. Alternatively the rotor may comprise a disc of porous ceramic material.
Patent GB-1116803-A (GB)
Title: Measuring instrument
IPC: G01B3/08
Filed: 1965-03-31
Abstract: 1,116,803. Telescopic rules. S.G. YOUNG. March 30, 1966 [March 31, 1965], No.13669/65. Heading G1M. A telescopic ruler of the kind described in copending Specification 1,113, 091 which can be releasably locked in an extended position comprises stops 3x in the retracted end of the or each inner staff and in the corresponding end of the outer staff, the stops being such that in the retracted position they abut against one another and absorb any impact caused by placing the said corresponding end 16 on the ground. The stops are preferably in the form of metal plugs which may be the same as the blocks 3 of co-pending Specification 1,113,091. In one embodiment holes are provided at both ends of the staffs to engage buttons 6x mounted on the said stops so that the staffs are releasably locked in both the extended and retracted positions. The locking force is desirably less in the retracted position than in the extended position.