baber/WOPTO huggingface dataset:
Patent GB-951420-A (GB)
Title: Purification of aluminium-containing organic compounds
Inventor: FOSTER CHARLES VERNON
IPC: C07C29/54
Filed: 1961-07-05
Abstract: Aluminium alkoxide in a liquid which consists of or comprises aluminium alkoxides and in which are present compounds of higher volatility, e.g. mixtures formed by the oxidation of aluminium trialkyls with air or oxygen, are purified by heating the mixture to between 350 DEG  and 550 DEG F. and then finely spraying it into a chamber at such temperature and pressure conditions that the compounds of higher volatility than the aluminium alkoxides are vaporized, and the aluminium alkoxides are recovered from the unvaporized portion.  The purification may be in two or more stages, any solvent present being removed in the first stage. Vaporization in the second and subsequent stages may be effected in the presence of a gaseous or vaporized stripping agent which is removed with the vaporized portion of the mixture.  Stripping agents used include natural gas, hexane, iso-octane or sweetened kerosene.  The vaporization may be carried out at a pressure between 5 and 760 m.m. of mercury absolute.
Patent GB-598838-A (GB)
Title: Improvements in lipstick and like holders
IPC: A45D40/06
Filed: 1945-09-20
Abstract: 598,838. Lipstick &c. holders. GRIFFITHS, C. J. Sept. 20, 1945, No. 24346. [Class 18] A refill device for use with a lipstick or like holder comprises a cup-like socket 2 forming one element of a bayonet-joint and a cover 4 fitting upon the socket. The cover may be made wholly or partly of transparent plastic material or of glass, and may be a press-on fit or may be screw-threaded to engage the socket. A diametrically disposed flange or projection 3 engages the lipstick to prevent rotation. The socket 2 is received in a cup-like complementary bayonet-joint fitting 9 having a projection 13 engaging in longitudinal and helical slots in relatively rotatable sleeves 10, 11, so that the fitting 9 with the socket 2 and lipstick can be projected and withdrawn. A yielding pad 14 or spring-loaded member may be arranged to maintain the bayonet connection under pressure. The relatively rotatable sleeves 10, 11 are prevented from longitudinal movement by a circlip 18 engaging grooves in the sleeves. The lower end 26 of the holder may be extended by a screw-threaded or plain spigot by which a second lipstick holder or a cigarette lighter can be attached.
Patent GB-1035189-A (GB)
Title: Process for preparing -lactams
IPC: C07D201/10
Filed: 1965-06-09
Abstract: o -Lactams are prepared by reacting cycloalkyl ketones of formula R-CO-R1 where R and R1 are hydrocarbon groups at least one being a cycloalkyl group, with a nitrosating agent in the presence of boron trifluoride.  As by-products carboxylic acid derivatives are formed which may be hydrolysed to the acids. A list of suitable nitrosating reagents is given and nitrosyl chloride is exemplified.  It is also possible to use a complex of the nitrosating agent and boron trifluoride.  When dicycloalkyl ketones are used caprolactam is formed together with a cycloalkyl carboxylic acid which may then react further with the nitrosating reagent to give more caprolactam. The reaction may be carried out in solution, suitably in a saturated hydrocarbon, and is preferably carried out in the presence of water. The examples describe the preparation of capryl lactam from cyclooctyl methyl ketone, and caprolactam from cyclohexyl methyl ketone, using nitrosylchloride.
Patent GB-245225-A (GB)
Title: Improvements relating to electrical contact clips
IPC: H01R13/115
Filed: 1924-10-15
Abstract: 245,225. Barker, W., and Clarkson, C. E. Oct. 15, 1924. Binding-posts and terminals; needle-point couplings.- A spring- grip terminal comprises a strip A of metal coiled or folded and grooved as at A<1> to form an opening to receive a wire, fuse carrier &c. The strip may be secured to a base &c. by a metal or wood screw F or may be formed with lugs for fixing by screws. It may be attached by a wood screw to the end of the insulated lead. Reference has been directed by the Comptroller to Specification 238,670.
Patent GB-379511-A (GB)
Title: Improvements in and relating to fluoroscopic screen holders
IPC: A61B6/00
Filed: 1931-08-31
Abstract: 379,511. Balancing-apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Grobe, J. J. ; 733, North Elmwood Avenue, Oak Park, Illinois, U.S.A.) Aug. 31, 1931, No. 24447. Convention date, Aug. 30, 1930. [Class 78 (ii).] The counterbalancing arrangement for a fluorescent screen or plate holder 53, 40 pivoted at 34 on forwardly projecting arms of a carrying frame 30, 28, 29 is such that the holder is counterbalanced not only when it is swung about the pivot 34 from horizontal to vertical position, but also when the carrying frame 30, 28, 29 is raised and lowered in the support 20. This support 20 is mounted on horizontal arms extending from the X-ray table. The member 40 of the holder has arms 42, 41 on opposite sides of the pivot 34, each of which is connected by a cable over a series of pulleys to a counterweight 52 sliding on the uprights 28 of the carrying frame. Pulleys 38, 39 are carried by the support 20, and pulleys 31, 32, 36, 37 are carried by the vertically adjustable frame 30, 28, 29. Buffer cushions for the screen are mounted on the carrying frame.
Patent GB-489901-A (GB)
Title: Improvements relating to lathes and other machine tools
IPC: B23Q11/12
Filed: 1937-09-08
Abstract: 489,901. Lubricating; turret-lathes. WICKMAN, Ltd., A. C., and GREGORY, D. Sept. 8, 1937, No. 24471. [Class 12 (iii)] [Also in Group XXII] Lathes, or other machine tools, of the kind having an intermittently rotatable cylindrical part b carrying a plurality of tools or work pieces and having means whereby it can be secured to its support a when at rest, are provided with means for automatically supplying lubricant to the lower contiguous surfaces of the rotatable part b and its bearing a immediately prior to each movement of the said part. As shown, intermittent movement is given to the part b by gearing f, g, the shaft h carrying the gear wheel g having a disc i with slots j which are engaged by a pin k on an arm l fixed to a spindle m. Lubricant is supplied to the bearing faces of the part b just before each movement thereof by a reciprocating oil pump z the plunger of which is actuated by a thrust piece 2 engageable with a cam x on the spindle m. The part b has ratchet pieces c which are engaged by pawls d, e, when the part b is stationary. Pawl d is pressed by a spring 6, and the pawl e is carried by a slide p which is actuated by a cam n on the spindle m through toggle links w, links t, q, with a coupling s, and lever o.
Patent GB-711810-A (GB)
Title: Pallets for handling loads
Inventor: STUART STANLEY DAVID
IPC: B65D19/00
Filed: 1951-10-19
Abstract: 711,810. Pallets for handling loads. OMIC, Ltd. Oct. 17, 1952 [Oct. 19, 1951], No. 24485/51. Class 78 (4) The outlines in plan view of the upper and lower decks A and B, Fig. 1, of a pallet are circular, or polygonal with more than four sides, and the two decks are spaced apart either by a single central pedestal 2. Fig. 1 or by a series of verticals 10, Fig. 6. so permitting access from any of several directions. Both decks of the pallet of Fig. 1 comprise a series of wooden lengths 4 supported on members 7 and, in the case of the lower deck B, intermediate strips 8. In the arrangement of Fig. 6 the decks are spaced apart by legs 10 each of which comprises a spacing sleeve through which passes a fixing bolt 11.
Patent GB-683535-A (GB)
Title: Improvements in or relating to refracting devices for electromagnetic waves
IPC: H01Q15/10
Filed: 1949-09-23
Abstract: 683,535. Aerials. WESTERN ELECTRIC CO., Inc. Sept. 23, 1949 [Oct. 1, 1948], No. 24489/49. Class 40 (vii). A radio-wave refracting device comprises a plurality of parallel conducting plates or grid structures acting as channels for waves polarized perpendicularly thereto, whereby the path of the waves through the device is made greater than the path that they would otherwise follow, thus providing the device with an effective refractive index greater than that of the surrounding medium. Fig. 2 illustrates one form of refractive device comprising a plurality of sinusoidally-shaped channels so that the length Lc of the path through the channels exceeds that La of the corresponding path through free space. The incident wave energy is propogated along the path 12, 10 representing the electric vector. The channels are arranged to be less than a half-wavelength wide at the highest operating frequency so that only radiation polarized as shown is transmitted through the device. Fig. 3 shows an alternative arrangement wherein the channels are bounded by planar plates which are tilted with respect to the direction of the incoming radiation. In other arrangements zig-zag channels may be used. The conducting plates shown in the arrangements of Figs. 2 and 3 may be replaced by a grid of conducting wires arranged as indicated by the broken lines marked upon the upper plates of the two devices. The grid wires are spaced apart a distance a less than a half-wavelength at the highest operating frequency. In such arrangements waves polarized perpendicularly to those indicated in the Figures will be transmitted without modification by the devices and hence by arranging that Lc exceeds La by a quarter-wavelength or a half-wavelength and by arranging the grid planes at 45 degrees to the polarization direction of the incident radiation the devices will act as polarization circularizers or polarization changers respectively. Arrangements constructed as shown in Figs. 2 and 3 may be shaped to provide refracting prisms or cylindrical or circular lenses. Figs. 6 and 7 show a circular lens constructed of inclined plane plates 5, having a hyperboloidal rear surface and a plane front surface and fed from a wave-guide horn situated at its focus 23. Lenses may also be constructed of grid wires embedded in slabs of polystyrene foam. Specifications 650,767, 654,944, 655,936, 664,672, 664,673, 665,736 and 683,534, [Group XXXVIII], are referred to.
Patent GB-407004-A (GB)
Title: Improvements in chicken brooders and rearers
IPC: A01K31/18
Filed: 1932-09-02
Abstract: 407,004. Rearing-appliances; feeding- appliances for animals. SARSON, G. S., Homestead Poultry Farm, Weeley, Essex. Sept. 2, 1932, No. 24536. [Class 5 (ii).] A removable trough or hopper unit, one or more of which forms or form the whole or a portion of one or both of the side walls, end walls or both of a brooder and rearer, is so formed on its inner side as to provide a cage-like rail or bar structure serving as a barrier to keep the birds in the brooder and rearer while at the same time allowing them to obtain food or water through the rail or bar structure from the trough or hopper. The unit comprises spaced vertical wires or bars 1 fixed in boards 2, 3, a slide 4 sliding on or against the wires or bars to determine the depth of the trough or hopper, which comprises a base 5, outer board 6, end walls 7 and removable glass panel 8. The brooder and rearer comprises a mesh floor and top ; or, the floor may be of removable wire mats. A carrier 10 supports a heater and the temperature is regulated by an adjustable canopy 10<a>. At first, a unit may be placed transversely of the brooder to prevent the chicks straying too far from the heater. Droppings trays are provided beneath the mesh floor. According to the Provisional Specification, the invention is applicable to poultry houses and coops and like houses for birds or other animals.
Patent GB-1332846-A (GB)
Title: Process for the preparation of photographic materials
IPC: G03C1/74
Filed: 1971-04-19
Abstract: 1332846 Electro-phoretically depositing  silver salts or complexes EASTMAN KODAK CO 19 April 1971 [19 March 1970] 24559/71 Heading C7B [Also in Division G2] Photographic materials are prepared by immersing a pair of electrodes in a dispersion of a silver salt, or silver sensitizing dye complex crystals in a liquid and applying a potential so that crystals deposit on one electrode. Preferably a silver halide (which may be spectrally sensitized) or a complex silver salt of a sensitizing dye is dispersed in an insulating liquid (e.g. nitromethane or distilled water) optionally containing a surfactant or ionic dye, and is deposited on an electrode of metal, glass coated with Ti or Au or plastics coated with Ti and Au using an electrode spacing of 5 - 10 mm and a potential of 5 - 1500V. The Examples describe the deposition of (1) a gelatino Ag Br emulsion which has been decanted and washed with nitromethane and isopropanol, (2) sensitized precipitated Ag Br, (3) AgBr obtained by enzymic removal of gelatine from an Ag Br emulsion, and (4) a gelatino Ag methin dye complex. The coated dye complex is exposed and physically developed in an aqueous solution of Na 2 SO 3 , Na isoascorbate, Na 2  CO 3 , an anium salt, Na 2 S 2 O 3 , AgCl and 5- methylbenzotriazole. Reference is also made to making mixed grain emulsion materials for use in colour reversal processes.
Patent GB-1304994-A (GB)
IPC: A61F13/58
Filed: 1971-04-19
Abstract: 1304994 Disposable diaper PROCTER & GAMBLE CO 19 April 1971 [18 March 1970] 24568/71 Heading A3V  A diaper 10, of which one corner is shown, comprises an absorbent core 11, e.g, of cellulosic fluff, a backing sheet 12, e.g. of waterimpervious plastics or non-woven fabric, attached to one side of the core and folded over at the edge of the core 14 making a margin 13, a pressure sensitive tape fastener 16, e.g. of paper or polyethylene backed tape, secured at one end 17 to the backing sheet 12 the other end 18 being releasably attached to the backing sheet at the margin 13, and a releasable liner 19 of polyethylene or paper or other suitable material interposed between the releasable end 18 of the tape and fastener 16 and the backing sheet 12, the release liner being removable to expose an adhesive area 20 on the backing sheet which is used to retain the diaper, when soiled, in a rolled or folded condition. The surface 21 of the release liner 19 is silicone treated so that it has minimal adhesive attachment to the end 18 of the tape fastener 16, and the end 18 of the fastener 16 is held in position with respect to the release liner by means of small holes therein (not shown) which result in the adhesive on the end 18 being directly adhered to the backing sheet 12 in the area around the holes. In use the end 18 is peeled away from the release liner 19 and the tape fastener 16 used to secure the diaper on the wearer. An alternative embodiment provides for the pressure sensitive adhesive 20 to be retained on the release liner 19 so that the liner itself may be used for maintaining the soiled diaper in a rolled or folded state.
Patent GB-671025-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B85/06
Filed: 1950-10-10
Abstract: 671,025. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Oct. 10, 1950, No. 24699/50. Class 112. Duplex feed by dogs.-In a machine having two feed-dogs separately actuated to give differential feed, means are provided for putting the auxiliary feed-dog out of action, by moving it down clear of the work. In the overedge sewing-machine shown, the main and auxiliary feed-dogs 22, 23 are carried by feed-bars 24, 25 which engage a common feed-lift eccentric on the main shaft 18 and are slidable at their rear ends on pivotally-mounted blocks such as 28; the respective feed motions are derived from eccentrics on the shaft 18 through pitmans 37, 39, no alteration in feed being provided for except by changing the eccentrics. The pivot of the block 28 guiding the main feed-bar 24 is eccentric on a stud 52 which can be angularly adjusted to vary the height of the feed-dog 22, the feed-bar rocking on the feed-lift eccentric during adjustment. The pivot of the block 28 guiding the auxiliary feed-bar 25 is similarly mounted on an angularly-movable stud, but in this case the stud has an arm 44 connected to a treadle whereby the stud can be rocked through 90 degrees at will, against a spring 48, to raise that end of the feed-bar 25 and so lower the dog 23 clear of the work.
Patent GB-207897-A (GB)
Title: Improvements in and relating to step ladders
IPC: B60S1/16
Filed: 1922-09-12
Abstract: 207,897. White, A. E., (Willett, B. E.). Sept. 12, 1922. Ladders.-A step ladder, adapted to have a wide platform at its upper end, is formed with the step portion 11 of less height than the rear portion 17 and connected thereto by bars 24 hinged to the rear member and to pivoted brackets 13<a> on the step member and hinged collapsable braces 28 and other braces 25 simply hinged to the front and rear members. By this arrangement, the ladder is collapsed by a relative upward and inward movement of one member towards the other. The bars 24 support a platform 29 which may be formed in two hinged portions, the rear portion 30 of which may be elevated to form a step. Handrails 35 are hinged to the top of the rear frame and slide in pivoted sockets 38 on the brackets 13<a>. The ladder is locked in open position by pivoted catches 41 which are caused to contact with the ends of the handrails through levers 42 and braces 28. The step portion is formed with open side bars and extended foot portions 16 braced by bars 56 secured to the ladder sides 11. Each side bar is further provided with a spring-mounted castor 47 which normally is in contact with the ground to render transport easy, but which is rendered inoperative by the weight of a person ascending the ladder. In order that the castor may be again rendered operative even when a person is on the ladder, a sliding rod 50 is provided adapted to be operated from a foot stop 52 on the platform. Castors are also provided on the bottoms of the posts of the rear frame. A tool box 57 is also provided at the top of the rear frame. In a modification, Fig. 9, the platform supporting braces are formed in two hinged portions 62, 64, the inclined braces 65 being hinged to the rear portions 62, while the handrails 71 are hinged to the front ends of the portions 64, which are hinged to side plates 63 on the top of the ladder sides. The rear brace portions 62 are provided with forward extensions which rest on the flanges of the forward brace portions 64. A pail may be positioned on the top bracket 74 by a spring stop 81 and a spring clamp 76. In a further modification, Fig. 15, the ends of the handrails 91 and the ends of the brace members 89 are carried by common pivots 93 on the tops of the sides of the step portion.
Patent GB-631321-A (GB)
Title: Improvements in or relating to navigation aiding radio systems
IPC: G01S1/02
Filed: 1946-08-19
Abstract: 631,321. Phase-changing. SADIR-CARPENTIER. Aug. 19, 1946, No. 24712. Convention date, Oct. 10, 1944. [Class 38 (ii)] [Also in Group XL (c)] In a phase-changing arrangement used to apply modulation frequency signals to the various units of a directional radiation system for radio-navigation, the modulation is applied over transformer 101, the secondary of which is centre-tapped to earth and one output of fixed frequency derived at A<1>. A second output shifted in phase by 90 degrees with respect to that at A<1> is obtained at H from a capacitorresistor phase-shifting circuit and a variable phase output is obtainable at B<1> from a further resistor capacitor circuit using a variable condenser C<1>. The vanes of condenser C<1> may be made of any desired shape and the movable portion rotated by a motor to provide a desired phase shift-time relationship. The lower part of the Figure shows a similar circuit. The variable condenser C<2> which controls the phase of the output of this circuit may be driven by the same motor as C<1> and the vanes so shaped that a desired phase relationship exists between the signals from outputs B<1> and B<2>.
Patent GB-690159-A (GB)
Title: Improvements relating to radiation detectors
IPC: H01J47/04
Filed: 1951-10-23
Abstract: 690,159. Electrometers. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Oct. 23, 1951 [Oct. 31, 1950], No. 24741/51. Class 37. [Also in Group XL (b)] Apparatus for detecting radio-activity comprises a moving vane electrometer situated in an ionization chamber and a piezo-crystal under pressure, the potential developed across this crystal being applied to the fixed and moving plates of the electrometer so as to give it an initial deflection which is gradually reduced as the gas in the chamber is ionized by radio-activity. As shown, the instrument comprises a cylindrical plastic envelope 1 coated internally with a conducting layer such as " Aquadag " (Registered Trade Mark). The top of the chamber is closed by a diaphragm 3 carrying a central cylinder 4 with an insulating bush 7 in its bottom, through which passes an extension 8 of a table 10. The piezo-crystal, which is of barium titanate with metal coated faces, rests on this table, and the crystal is compressed between the table and a thumb-screw 6. The electrometer consists of a bracket 12 carrying insulating bushings through which pass metallic supports carrying flat springs 17, 18 between which is mounted the moving vane suspension 25. The moving vane 24 (Fig. 2), rotates between pairs of fixed vanes 20, 21 and 22, 23 which are supported by a ring 19 attached to bracket 12. The very light pointer 27 carries a mica button at one end as an indicator and a counterweight at the other. In use, diaphragm 3 is pressed down until extension 8 contacts the metal support 15 when the voltage developed across the piezo-crystal is applied across the moving and fixed vanes of the electrometer. Pressure on the crystal is then increased by means of the thumb-screw until pointer 27 reads zero. By changing the volume of the ionization chamber or the electrical capacity of the instrument the full scale value of the instrument may be varied.
Patent GB-532438-A (GB)
Title: Improvements in and relating to jig-boring and similar machine tools
IPC: F16C29/10
Filed: 1939-08-31
Abstract: 532,438. Work-holders; machine framings. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. Aug. 31, 1939, No. 24980. Convention date, June 30. [Class 83 (iii)] In a precision machine tool such as a jig boring and milling machine, the work table 2, which may be horizontal or otherwise, is supported on the bed 1 by roller bearings 3, 6 and is capable of being clamped to the bed by means of a bolt 8. The bearing 6 has cylindrical rollers running on horizontal guide surfaces and attached to a frame 7 whilst the rollers 3 are arranged on inclined axes in a frame 5 with alternate rollers oppositely inclined so as to engage the guide surfaces 3a, 3b or 4a, 4b. The clamping bolt 8 has its head 9 located in a recess in the table and passes through opposed cones 13, 14 which may be drawn together on rotation of a nut 11 by a handle 12 so as to expand a split coned sleeve 16 against the walls of a housing on the machine bed, thus clamping the table at its central plane. In a modified construction of clamp the sleeve 16 has a conical exterior with the wide end downwards engaging a similarly shaped housing in the bed so that the clamp will draw the table down on the rollers but without sufficient force to injure them. An adjusted washer is placed between the table and the upper cone 14 and both cones 13, 14 may be split. Several clamps may be spaced along the length of the table, and the nuts 11 may be rotated by fluid pressure or the bolts 8 may be actuated directly by fluid pressure.
Patent GB-227177-A (GB)
Title: Improvements in the production of materials for purifying oils
IPC: C10G25/06
Filed: 1923-10-08
Abstract: Fuller's earth or other aluminium hydrosilicate for the purification of petroleum lubricating and other oils is kept and used in the form of a mud or paste obtained by treating a mud or paste of non-spent earth with sulphuric or other acid, washing, and drawing off surplus water.  When the oil and mud are mixed and heated the remaining water is evaporated.  Reference has been directed by the Comptroller to Specifications 14364/00, [Class 46, Filtering &c.]; 11614/12, [Class 1 (ii), Inorganic compounds, other than &c.]; 122,465, [Class 90, Nonmetallic elements]; 163,505; and 177,180, [Class 90, Non-metallic elements].