baber/WOPTO huggingface dataset:
Patent GB-984815-A (GB)
Title: Polymerizing ª-olefins
IPC: C08F10/00
Filed: 1963-08-02
Abstract: <PICT:0984815/C3/1> An a -olefine is polymerized by introducing into a reaction zone an a -olefine and at least 5% by weight, preferably 5 to 10% by weight, of an inert diluent, both in liquid form, and a catalyst formed from a reducible halide of a Group IVa, Va or VIa metal (Mendeleeff Table) and a reducing compound of a Group Ia or IIa metal or aluminium, withdrawing from the reaction zone a slurry of a -olefine polymer in liquid olefine and inert diluent, separating the polymer from the unreacted a -olefine and inert diluent and recycling the unreacted a -olefine and inert diluent to the reaction zone. Preferably the inert diluent is a normally gaseous material liquefiable under the conditions existing in the reaction zone.  In the Figure, liquid propylene and inert diluent are introduced via line 10 to reactor 11, a chain transfer agent or molecular weight control agent such as hydrogen via line 12, one component of the catalyst, e.g. TiCl3 via line 13 and the other component of the catalyst, e.g. diethyl aluminium monochloride, via line 14 to reactor 11.  Alternatively, the catalyst components may be premixed.  A slurry of the polymer in liquid propylene and inert diluent is withdrawn from the reactor and passed to cyclone 17 where the propylene and diluent are flashed off and the polymer recovered is then worked up.  From cyclone 17 the propylene and inert diluent are flashed off to filter 34 and part then passes to recycle compressor 37, the other part being diverted via line 38, blower 39 and heater 40 to cyclone 17 to aid in the separation of volatiles in cyclone 17. From compressor 37 the recycle stream passes to condenser 41 and accumulator 42 from where a proportion of the recycle stream may be vented through line 431, the rest passing to driers 45, storage tank 47 and drier 51 and then to reactor 11.  Fresh propylene may be introduced via line 50.  Specification 810,023 is referred to.
Patent GB-1245220-A (GB)
Title: Improvements in infra-red hygrometers
IPC: G01N21/35
Filed: 1970-06-24
Abstract: 1, 245, 220. Infrared hygrometers. THOMSON-CSF. June 24, 1970 [June, 30, 1969], No. 30728/70. Heading G1A. In an infrared hygrometer in which radiation is alternately passed through a dry air enclosure 7 and a part of cavity 28 or passed through an enclosure 8 containing circulating humid air and another part of cavity 28, both radiation paths have the same number of windows (29 and 30 or 32 and 21) which could be affected by condensation. The alternating radiation beams are formed by a rotating hollow cylinder whose walls have a plurality of uniformly spaced holes. The output from detector 19 controls a light path balancing attenuator 11 and the humidity is signalled by a copying potentiometer 25, an attenuator 12 being provided in the other path for calibration purposes.
Patent GB-710643-A (GB)
Title: Anchoring deposits on lacquer surfaces
Filed: 1950-12-18
Abstract: A method of anchoring a deposit on a lacquer surface consists in firstly partly polymerizing or pre-curing the lacquer, depositing metal or a mineral on the lacquer surface in vacuum, and then effecting further or final polymerization of the lacquer. A metal or other surface, such as glass or plastics able to withstand the curing temperature of the lacquer and not be attacked by it, is coated with a polymerizing lacquer such as styrene lacquer or an epoxyethane derivative such as "Araldite" (Registered Trade Mark).  The lacquer is pre-cured either at a temperature lower than the final curing temperature, or at the final temperature but for a shorter time than is required for final polymerization.  The metal is deposited on the lacquer surface in vacuo.  The polymerization of the lacquer is then completed by heating the coated article at a higher temperature than the pre-curing temperature, or resuming heating at the curing temperature, to effect strong adhesion of the deposited medium. Silicon monoxide, kryolite or other mineral compound may be deposited on the metal surface after the final curing.  A mineral such as silicon monoxide or magnesium fluoride may be deposited in lieu of the metal after pre-curing and before final curing.ALSO:A method of anchoring a deposit on a lacquer surface consists in firstly partly polymerizing or pre-curing the lacquer, depositing metal or a mineral on the lacquer surface in vacuum, and then effecting further or final polmerization of the lacquer. A metal or other surface, such as glass or plastics able to withstand the curing temperature of the lacquer and not be attacked by it, is coated with a polymerizing lacquer, such as styrene lacquer or an epoxyethane derivative such as "Araldite" (Registered Trade Mark).  The lacquer is pre-cured either at a temperature lower than the final curing temperature, or at the final temperature but for a shorter time than is required for final polymerization.  The metal is deposited on the lacquer surface in vacuo.  The polymerization of the lacquer is then completed by heating the coated article at a higher temperature than the pre-curing temperature, or resuming heating at the curing temperature, to effect strong adhesion of the deposited medium. Silicon monoxide, cryolite or other mineral compound may be deposited on the metal surface after the final curing.  A mineral such as silicon monoxide or magnesium fluoride may be deposited in lieu of the metal after pre-curing and before final curing.
Patent GB-972457-A (GB)
Title: Improvements in or relating to travelling wave tubes
IPC: H01J25/00
Filed: 1962-08-10
Abstract: 972,457. Travelling wave tubes. M.O VALVE CO. Ltd., and R. L. FERRARI. July 29, 1963 [Aug. 10, 1962], No. 30782/62. Heading H1D. A gas-filled travelling wave tube has an electron gun 15, 16 which produces an electron beam of sufficient density to generate a plasma within a waveguide 2 by interaction of the beam with the gas, the arrangement being such that with an applied axial magnetic field H, the waveguide is capable of propagating space charge waves in a forward wave made over a range of frequencies extending below both the normal cut-off frequency of the waveguide in the absence of the plasma and the cyclotron frequency corresponding to the magnetic field and, with an input signal having an appropriate frequency applied to a first radio frequency connector 3, an amplified output signal is obtained at a second radio frequency connector 4. The gas filling is preferably deuterium at a pressure of 0.12-0.27 torr, and the waveguide and radio frequency connectors form part of the vacuum envelope. The input and output waveguides 6, 7 are rectangular of dimensions 1.02 x 2.29 cms., tapered sections 9 connecting them to input connections 5 of dimensions 0.15 x 2.29 cms. The waveguide 2 is preferably biased with respect to the cathode so as to control the plasma density.
Patent GB-748523-A (GB)
Title: Improvements relating to pigeon baskets
IPC: A01K31/07
Filed: 1953-11-07
Abstract: 748,523. Pigeon baskets. BAILEY, W. A. J. Feb. 4, 1955 [Nov. 7, 1953], No. 30872/53. Class 5 (2). [Also in Group XV] A pigeon basket has a drop-down door extending the full length of the basket and associated with reinforced door opening. The front of a wickerwork basket has, at the bottom, a pair of cane longitudinal members 101 threaded through the looped front ends 111 of the osiers. The top of the front is held by a longitudinal batten 102 extending the full length of the front. Cane uprights at the sides fit within anglesection uprights 131 of a strip metal frame 13 and are enclosed by the looped front ends of the osiers forming the sides of the basket. The lower side 132 of frame 13 is bolted to members 101 and the horizontal flange of the upper section 133 of frame 13 is screwed to the underside of upper batten 102. Diagonal strips 134 form stops for door 15 which is wickerwork reinforced with metal clips 103. A wooden rod 16, threaded through loops 151 of the osiers forming door 15, is engaged at intervals by bent sheet metal hinges 17 whose doubled ends 171 are secured to members 101 by bifurcated rivets 18. The shanks of rivets 18 are threaded through holes in section 132 of frame 13, between members 101 and finally through a washer 19 in abutment with the underside of front ends 111 of the osiers of the bottom of the basket and bent back. Battens are bolted to the underside of the basket and a lining is provided.
Patent GB-1080373-A (GB)
Title: Improvements in or relating to tool holders for chip cutting machining
IPC: B23B29/034
Filed: 1964-08-04
Abstract: 1,080,373. Boring bars. SANDVIKENS JERNVERKS A.B. Aug. 4, 1964 [July 26, 1963], No. 30910/64. Heading B3C. A boring bar assembly comprises a boring bar 31, Fig. 2, a holder 30 for a tip 32 and a wedge 37 for adjusting the radial position of the tip. The tip may be of sintered carbide or oxide, and is clamped by a plate 34, along with a chip breaker 35. The wedge is slidable on the holder, and these members are held together by a screw 41, and held in the boring bar 31 by a screw 36. Wedge 37 is adjusted by an eccentric 53, Fig. 5 on a plate 52 formed on a rotatable shaft 50 in holder 30, the eccentric co-operating with a groove 54 in the wedge. Holder 30 is axially adjusted by a screw 40. The holder and wedge may be seated against faces (39), (45) in the bar (31a), Fig. 6 (not shown) or in a groove with two side faces (45), (46), Fig. 7 (not shown). The tip 32 may be of triangular, square or round section. In a prior art boring bar 11, Fig. 1, holder 10 is adjusted by a screw 13.
Patent GB-191552-A (GB)
Title: Improvements relating to axle-boxes for tramcars and the like
IPC: B61F15/18
Filed: 1921-11-19
Abstract: 191,552. Blaney, T. Nov. 19, 1921. Axle bearing guiding-arrangements.-In a tramcar &c. axle-box which lies between the limbs of a nshaped pedestal of the lower truck frame, and in which a forked check plate is used on the end of the axle, means for preventing the tapering wear of the axle consists in mounting a leaf or helical spring or springs on the rear portion of the axle-box adapted to bear against the inner side of the pedestal. The plunger H bears against the rear side of the pedestal K and prevents the axle-box A from tilting. Two plungers may be used and they may be placed on either side of the axle-box. Leaf springs may be used instead of the helical springs F and the usual forked plate B may be replaced by a plate fitting into grooves in the axle-box and having a centre bearing to take the end thrust of the axle C.
Patent GB-603961-A (GB)
Title: Improvements in the shutter operating devices of photographic cameras
IPC: G03B39/04
Filed: 1945-11-19
Abstract: 603,961. Photographic cameras. SPECTO, Ltd., and HOBBS, H. W. Nov. 19, 1945, No. 31009. [Class 98 (i)] A camera includes a device for actuating the shutter which comprises a field magnet system, consisting of pairs of poles of opposite sign, arranged so that like poles are adjacent each other; a magnetizable armature 7 connected to the camera shutter and movable between poles of opposite sign ; and a coil 9 for magnetizing the armature through which a current may be passed in either direction. The magnets may be either electromagnets continuously energized by coils 2 or permanent magnets. On closing one of the shutter operating switches, say 14, the armature rotates clockwise allowing the spring contact 10 to close and breaking the circuit energizing the coil 9 through spring contact 11 which also acts as a buffer for the armature. The armature is retained in this position until the switch 13 is closed when it returns to the position shown. The shutter may be a single blade mounted directly on the shaft of the armature.
Patent GB-376607-A (GB)
Title: Improvements in exercising apparatus
IPC: A63B23/16
Filed: 1931-11-09
Abstract: 376,607. Exercising-apparatus. DUKE, J. R. H., Gledswood, Liss, Hampshire. Nov. 9, 1931, No. 31041. [Class 132 (i).] An exercising apparatus comprises an arrangement of springs and axially aligned handgrips such that not only the separation but also the approximation of the handgrips compresses one and the same spring or sets of springs. Tubular handgrips A, A are attached, one to a central rod B of non-circular section, and the other to three parallel rods B<1> spaced around the central rod. Abutment plates C, C<1> are attached to the free ends of the rods B, B<1> respectively, between which and a centre abutment D through which all the rods pass, are helical springs E, E<1> divided into sections by plates F, F<1>. The central abutment may be provided with flanges G so as to form a drum on which a tension string may be wound as described in Specification 360,453. The handgrips A, A<1> may be provided with loosely fitting sleeves of A<0> rubber &c. and may be slotted as described in that Specification, so that they must be tightly gripped when in use.
Patent GB-666993-A (GB)
Title: Process for preparing alpha-ionones
IPC: C07C403/00
Filed: 1948-11-30
Abstract: a -Ionones are prepared by treating the corresponding pseudo-ionones with at least 1, for example 1 to about 1.1, molecular equivalent of boron trifluoride.  The latter may be passed into the pseudo-ionone, which may be of lowgrade and ketone content, at about -25 DEG  to 30 DEG  C., preferably at 0-5 DEG  C., and in the presence of solvents such as benzene, toluene or carbon tetrachloride, until saturated, aqueous caustic alkali added, followed by solvent extraction and distillation.  In examples, a -ionone is obtained from pseudo-ionone, a -methyl-ionones from pseudo-methyl-ionone obtained by condensing citrol and methyl ethyl ketone, and a -allyl-ionones from pseudo-allyl-ionone.
Patent GB-1263380-A (GB)
Title: Production of polymers
IPC: C08G73/14
Filed: 1969-06-19
Abstract: 1,263,380. Polyamide-imides. STANDARD OIL CO. 19 June, 1969 [21 June, 1968], No. 31116/69. Heading C3R. Soluble polyamide-acids are produced by reacting an acyl halide of a benzene tricarboxylic acid anhydride with an aromatic diamine in phenol or an alkylated phenol, during and/or after the reaction maintaining the reaction mixture at 50 to 110 C. under subatmospheric pressure to partially remove hydrogen halide formed in the reaction, and subsequently treating the mixture with a C 2-4  alkylene oxide to scavenge residual hydrogen halide. The phenolic solvent may contain up to 30 wt. per cent of aromatic hydrocarbon diluent. The vacuum treatment may be effected under a vacuum of 50 to 200 mm. Hg and may be preceded by reaction at 25 to 50 C. Reference is made to Specification 1,056,564. Solutions, suspensions or powders of the polymers may be used in the production of coatings, laminates, films, fibres, moulded products and impregnating varnishes.
Patent GB-324408-A (GB)
Title: Improvements in or relating to oil heating systems
IPC: F24D7/00
Filed: 1928-10-27
Abstract: 324,408. Reavell, J. A. Oct. 27, 1928. Heating by circulation of fluids.-In a heating system employing circulating heated oil, the rising expansion main a is curved to enter an expansion tank b near its upper end, and any water, steam or air entering with the oil escapes through the pipe g. The separated oil returns to the expansion main through a liquid seal d of smaller bore. The inlet c may be arranged tangentially. The arrangement prevents froth passing back into the main body of oil, and avoids heating of the oil in the tank b by convection.
Patent GB-762924-A (GB)
Title: Improvements relating to cavity type frequency meters
IPC: G01R23/04
Filed: 1954-10-29
Abstract: 762,924. Frequency measurement. SPERRY CORPORATION. Oct. 29, 1954 [Nov. 16, 1953], No. 31328/54. Class 37. [Also in Group XL (b)] A frequency meter comprises two resonant cavities coupled to a source of microwave oscillations which are simultaneously tuned by mechanical adjustment so that the resonant frequency of one cavity is maintained at a constant integral multiple of that of the other; the radiation absorption of the combined cavities then being a maximum at the fundamental frequency of the oscillations to be measured. A waveguide 10 (Fig. 1) connecting a source of microwave energy 16 to a sensitive voltmeter 18 is coupled over apertures 24, 26 to absorptive cavities 20, 22 comprising rectangular waveguides terminated by plungers 34, 44 having peripheral “ wavelength short-circuiting slots 35 which are slidably located in the guides by dielectric plates 37, 48 and adjustable by threaded rods 36, 46 non-rotatably slidable in bracket 42 (Fig. 2) and engaged by internally threaded mutually engaging gearwheels 50, 58 having sleeves 52, 60 journalled in the upper surface of the bracket and retained by pins 64, 62 engaging annular slots 56, 64 thereof; whereby plunger 44 moves 10 times the distance of plunger 34 for a given knob rotation. Rod 36 is formed with a flat surface engraved with a frequency scale and gearwheel 58 is rotatable by knob 66 peripherally engraved in subdivisions of the frequency scale which co-operates with a fixed pointer 82 whereby the fundamental resonant frequency of cavity 20 is indicated at any setting. As the device is tuned, the voltmeter displays a series of dips corresponding to successive resonant modes of cavity 22 at the tenth harmonic of the input while resonance of cavity 20 at the fundamental frequency is displayed by a further superimposed dip (Fig. 4, not shown) at which the input frequency is determinable from the scales on knob 66 and rod 36.
Patent GB-192529-A (GB)
Title: Improvements in discharge nozzles for oils and other fluids
IPC: F16K31/58
Filed: 1921-11-23
Abstract: 192,529. Yates, A. E., and Shell-Mex, Ltd. Nov. 23, 1921. Tapered plug lift valves; outlets.-A discharge nozzle, more particularly for heavy hubricating oils, comprises a fixed hollow member, the outlet of which is controlled by an outer sleeve screwing upon it. A hollow member 1 is closed at the bottom and formed with a seating 2, while ports 6 are formed in an annular groove above the seating. A sleeve 3 is screwed to a ring 9 provided with threads 8 for engagement with the member 1. The outlet from the nozzle is closed by means of the closure surfaces 2, 4, and a central projection 14 is provided to direct the outflowing liquid. A stuffing box 12 is provided to prevent leakage. Alternatively, the sleeve 3 may be given a vertical sliding movement over the member 1 by a lever or link mechanism.
Patent GB-1374407-A (GB)
Title: Benzadehydesulphoylhydrazones processes for their production and their use for combating leporine animals and rodents
IPC: A01N41/06
Filed: 1973-07-02
Abstract: 1374407 Benzaldehyde - sulphonylhydrazones BAYEB AG 2 July 1973 [13 Feb 1973] 31422/73 Heading C2C Novel compounds of Formula I  (in which R is C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, or aryl which is optionally substituted by one or more of halogen, C 1 -C 4  alkyl, haloalkyl and nitro), are prepared by (a) reacting 3-amino- 2,4,6-trichloro-benzaldehyde with a sulphonic acid hydrazide of formula or (b) reacting 3-amino-2,4,6-trichloro-benzaldehyde-hydrazone with a sulphonic acid chloride of formula Cl-SO 2 -R. 3 - Amino - 2,4,6 - trichloro - benzaldehydehydrazone is prepared by reacting 3-amino- 2,4,6 - trichloro - benzaldehyde with hydrazine hydrate in ethanol in the presence of glacial acetic acid. Peaticidal compositions which are activeagainst leporine animals, rodents and insects, comprise a compound I together with a diluent or carrier.
Patent GB-643896-A (GB)
Title: Improvements in apparatus for drilling tennis racket or the like frames
IPC: B27M3/22
Filed: 1947-11-28
Abstract: 643,896. Drilling-machines for tennis racket and like frames. DUNLOP RUBBER CO., Ltd., and RENNOCKS, L. J. Nov. 28, 1947, No. 31497. [Class 83 (iii)] Apparatus for drilling tennis racket and like frames comprises fixed and movable location plates adapted to contact the insides of opposite edges of the frame, a number of adjustablyarranged drills substantially radially-disposed surrounding the clamping means, and means for rotating and traversing said drills simultaneously. The racket frame is initially positioned on the table 2, Fig. 1, by spring-pressed centring devices 10, 27 which form part of the clamping members 5, 4 respectively, the latter is slidable on the table 2 to clamp the frame and is moved by an air cylinder 17, Fig. 2, positioned under the table. The drills are arranged around the frame on blocks 34 provided with T-slots in their top faces for slidably accommodating the drills which are fed by air cylinders 44. The drills are provided with air motors 40 which are controlled by spring-loaded valves 41 operated automatically as the drills are fed forward by a cam-plate 42. The drills at the throat-end of the frame are guided in brackets 47 but those at the opposite end carry telescopic guide bushes 46.
Patent GB-1413949-A (GB)
Title: Method for the removal of nitrogen oxides
IPC: B01J23/889
Filed: 1973-09-19
Abstract: 1413949 Exhaust gas treatment HITACHI SHIPBUILDING & ENG CO Ltd 19 Sept 1973 [9 Dec 1972] 31700/74 Divided out of 1413349 Heading C1A [Also in Division B1] Nitrogen oxides are removed from exhaust gases by contact-reduction by a reducing gas consisting of one or more of CO, CH 4  and H 2  or an industrial gas having one or more of these as principal ingredients over a catalyst comprising an alumina carrier on which are supported (i) copper, and (ii) an oxide of Mn, Fe, Co, Ni, Mo or Pr or a mixture of two or more of these oxides.
Patent GB-1498930-A (GB)
Title: Harvesting machine
IPC: A01D67/00
Filed: 1976-07-29
Abstract: 1498930 Harvesters DEERE & CO 29 July 1976 [29 July 1975] 31706/76 Heading A1F A double combine or other harvester comprises two harvester units 12, 14 arranged side-by-side, braced together and supported by ground wheels 52, harvesting means at the front of each unit and adjacent each other for harvesting double the width of crop harvestable by either harvesting means alone, and a container 16 for collecting harvested crop from both units disposed in a space between the two units behind the harvesting means. This arrangement provides a harvester with a large working width and a collecting container with a low centre of gravity when filled. The units may be specially constructed units, or be modified combine harvesters each of which is capable of individual use. As shown the units 12, 14 are interconnected by front and rear telescopic braces 22, 24. The rear brace comprises rectangular tubes 26, 28 fast with the units slidably receiving a bar 30; the front brace comprises elements 32, 34 on the units sliding into a central tube 36 on which a driver's platform and cabin is provided. The grain tank 16 is held in its working position by a hydraulically controlled support which can be lowered until the tank is supported on the ground by wheels 17 and abutments on the support are clear of the tank which can then be run out of the machine. For transport purposes the two units can be moved closer together after the grain tank has been removed and the reaping platforms have been removed or pivoted to vertical positions. The units are moved together by hydraulic jacks associated with the telescopic braces, the wheels of at least one unit being pivotable about vertical axes to permit this movement, alternatively auxiliary wheels or skids are lowerable to support the unit being moved. As an alternative the units could be coupled in tandem for transport purposes. In a modification the collecting container can be raised above its working position and swung to a position from which the harvested material can be poured into another vehicle.