baber/WOPTO huggingface dataset:
Patent GB-1362222-A (GB)
Title: Photocycloaddition polymerisation of biscoumarins
IPC: C08F2/46
Filed: 1971-07-12
Abstract: 1362222 Photocycloaddition polymerization of biscoumarin derivatives AGFA-GEVAERT 5 July 1972 [12 July 1971] 32613/71 Heading C3P [Also in Divisions C2 G2 and C4] A biscoumarin derivative of formula where X is hydrogen or C 1  to C 4  alkyl, n is 1 to 20 and A is carbonyl or a direct bond, is poly. merized to a product of formula by exposure to ultra-violet radiation having a wavelength longer than 310 nm., in the presence of a photo-sensitizer having a triplet energy of at least 68 kcal./mole. In examples monomers having X = H or CH 3 , n = 10 or 11 and A = direct bond, or n = 5-8 and A = carbonyl are dissolved in CH 2 Cl 2  containing benzophenone and irradiated. The products may be depolymerized by radiation of shorter wavelengths.
Patent GB-765131-A (GB)
Title: Lock for motor vehicle doors
IPC: E05B65/32
Filed: 1954-11-11
Abstract: 765,131. Door latches. GSCHWEND, C. L. Nov. 11, 1954, No. 32634/54. Class 44. The invention relates to a lock for a motor vehicle door having a handle on the inner and outer sides whereby a bolt 6 (Fig. 5), rigid with the handles, may be pivoted into or out of engagement with an opening in the door frame (not shown). According to the invention, the spindle 3 of the bolt 6 carries a disc 12 with a cut-out portion 12<SP>1</SP>, and a locking bolt 13 with a feeler member (not shown) adapted to cooperate with the door frame, has a latch hook 131 held in engagement with the periphery of the disc 12 by means of a spring (not shown). The bolt 6 is carried by a disc 7 rigid with the spindle 3, and has a laterally bevelled portion (Fig. 3, not shown). The latter has the effect of engaging a recess in the door frame to draw the door up tightly in the closed position. In the disengaged position of the bolt 6, this cutaway portion is in alignment with the projection 131. The other end of the lever 13 (not shown) carries a roller which is spring urged into engagement with the door frame. Thus when either the inside or the outside handle is turned to the disengaged position, once the door is open and the roller of the arm 13 is clear of the door frame, the projection 131 falls into engagement with the cut-away portion 121, and maintains the bolt 6 in its retracted position. In Fig. 5, the bolt 6 may be retained in its projected position by the action of a knob 33 which is carried by an arm 31 pivotally mounted on the lock casing 1. The arm 31 carries a projection 32 which can thus be brought into engagement with a projection 30 carried by a plate 29 rigid with the spindle 3. A gate is provided on the casing 1 for the spindle of the knob 33 and has recesses for registering the knob in each of its two positions. In Fig. 2, the catch afforded by the knob 33 and associated plate 29 is replaced by a handle positioned remotely from the spindle 3. The handle is rigid with a spindle 18 carrying a disc 20 and a disc 22. The disc 20 is connected by a link 21 to the disc 7 of the spindle 3. The disc 22 has a projection 22<SP>1</SP> which is adapted to engage a projection 23 carried by a lever 24 urged into operative position by a spring 25. A pin 28 carried by an operating knob 26 (Fig. 1, not shown), is adapted to displace the projection 23 out of engagement with the projection 221 on rotation of the knob 26. In this embodiment of the invention, the spindle 3 is urged into the bolt-engaged position by the action of a spiral spring.
Patent GB-1270991-A (GB)
Title: A method for producing melamine from dicyandiamide
Inventor: STELLING PER OTTO
IPC: C07D251/58
Filed: 1969-06-27
Abstract: 1,270,991. Melamine. P. O. STELLING. 27 June, 1969 [28 June, 1968], No. 32702/69. Heading C2C. Melamine is produced by polymerizing dicyanamide in the presence of anhydrous ammonia and under superatmospheric pressure by introducing dicyanamide into a melt of melamine, passing ammonia over or through the melt and cooling the effluent gas to condense the melamine therein. The sublimation of melamine from the reaction melt serves to control the exothermic reaction and provide a pure product. The reaction is preferably conducted at 50 atm. and 350-600‹ C. Continuous operation may be achieved by introducing the dicyanamide with the ammonia. The effluent gas may be cooled to provide solid melamine and gaseous ammonia or a suspension or solution of melamine in liquid ammonia. In the latter case, ammonia is evaporated to provide the melamine product. The effluent gas can also be cooled by direct quenching with liquid ammonia. Ammonia recovered from the effluent gas can be recycled to the reaction stage.
Patent GB-151192-A (GB)
Title: Process for the recovery of the combustible material contained in the ashes from industrial furnaces and steam boilers
IPC: B03B9/04
Filed: 1919-12-30
Abstract: 151,192. AndrÚ, A. Dec. 30, 1919. No Patent granted (Sealing fee not paid). Pneumatic separating.-The lighter combustible material in the ashes from industrial furnaces or steam boilers is separated from the heavier incombustible material by means of a current of air from a blower a. The ashes are fed down an inclined conduit b in front of the blower, the lighter combustible material being carried along in the current of air down the inclined conduit c, while the heavier material falls through a vertical conduit d.
Patent GB-443453-A (GB)
Title: A combined hat and coat rack and curtain fronted wardrobe
IPC: A47B61/00
Filed: 1934-11-15
Abstract: 443,453. Garment racks. BLEAZARD, C., 35, Regent Road, Gillingham, Kent. Nov. 16, 1934, No. 32841. [Class 52 (v)] A garment rack is formed in two separately usable parts a back frame A, B, C, fitted with coat hooks J and suspension device D, and a detachable shelf L having side cheeks 0 between which a suspension rail P is fixed and fitted with a curtain rail M.
Patent GB-208363-A (GB)
Title: Improvements in and relating to clutches for connecting and disconnecting power transmission shafts
IPC: F16D43/18
Filed: 1922-12-04
Abstract: 208,363. Hunt, W. Dec. 4, 1922. Clutches, friction.- A coil or spiral b is expanded into gripping engagement w i t h a drum a by auxiliary clutching means centrifugally controlled. One end of the coil b is secured to the driven shaft y and the other to an arm k which connects a loose boss d to a free drum c. Upon the drum a, which is secured to the driving-shaft x, are pivoted levers f. At their outer ends these levers carry masses g, and at their inner ends friction shoes e adapted to grip the drum c. Such gripping caused by centrifugal force causes the drum c to turn over the shaft y and so expand the coil b until it grips firmly and is driven directly by the drum a. Adjustment is effected by springs h. The coils may be arranged to come into action successively. Alternatively, a coil of opposite hand can be arranged to be contracted into engagement with a drum within it.
Patent GB-604867-A (GB)
Title: Improvements in and relating to electric discharge devices of the magnetron type
IPC: H01J25/54
Filed: 1945-12-06
Abstract: 604,867. Magnetrons. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 6, 1945, No. 33083. Convention date, Dec. 11, 1944. [Class 39 (i)] A cylindrical split-anode magnetron has each gap shielded by a substantially U-shaped structure of conducting material spanning the gap and supported in insulated relation with respect to one of the anode members to minimize the escape of electrons from the interelectrode space. In the form shown in Fig. 1, one arm of the X-shaped sheet metal punching 13 is secured in a slot 14 in anode member 2 as by soldering or welding while the other arm dips into a recess 15 in anode member 3 the recess being parallel to gap 5. A similar shield 17 for gap 4 is secured in member 3 and insulated from member 2 by a recess 16, and the shields project about one-sixteenth of an inch from the sides of the anode members. The support conductors 6 and 7, which in the use of the device are short-circuited externally by a transverse conductor to provide a tuning circuit, may be formed of copper tubing sealed through the glass envelope by a seal which may include a fernico sleeve 8. Rectangular end shields 18, 19 help to prevent the escape of electrons from the inter-electrode space, and smaller end shields 21 to collect electrons escaping around the cathode 9 are supported by the cathode leads 10, 11. In one embodiment, (Fig. 2, not shown), both ends of the U-shields dip into recesses in the anodes, the shield being supported by a wire and glass bead from a cathode lead so that it is free to assume a potential depending on the charge collected. In Fig. 3 each U-shaped structure is formed by two parts 34, 35 secured to the anode members and separated by a diagonal slot 36.
Patent GB-392631-A (GB)
Title: Improvements in and apparatus for causing liquids to react with gases or vapours
IPC: C11C3/02
Filed: 1931-11-30
Abstract: <PICT:0392631/III/1> Reactions between liquids and gases or vapours are effected by passing the reagents together through at least two separate spaces situated one above the other while avoiding reflux of liquid from any space to the preceding one.  The spaces may contain inert or catalytic fillers or baffle plates, trays, &c. and may be provided with heating or cooling means.  Fig. 1 shows a series of spaces D<1> . . . D<8> to the top of which the liquid and gas are admitted by pipes A, B.  The reagents pass from each space to the succeeding one by pipes E<1>, E<2> &c. and pass out by the pipe H to the separator J.  In a modified apparatus the reagents flow upwardly through the column.  Inert gas may be added to the reaction gas to assist the agitation of the mixture.  The apparatus is suitable for effecting oxidations, chlorinations, hydrogenations, esterifications, &c.  Examples describe (1) the oxidation of paraffin wax, (2) the hydrogenation of soya bean oil, (3) the esterification of fatty acid with glycerol vapour.
Patent GB-213638-A (GB)
Title: Improvements relating to the separation of arsenic and tin in presence or absence of antimony
IPC: C01G19/00
Filed: 1922-12-04
Abstract: Arsenic, antimony, and tin are separated from caustic soda, for instance from the soda used for refining lead by the process described in Specification 189,013, [Class 82 (i), Metals, Extracting &c.], by treating the mass with hot water, separating the lead and insoluble antimonate, and cooling to separate crystals of sodium arsenate and stannate.  The stannate is only satisfactorily separated in presence of excess of arsenate, and additional arsenate may therefore be added if necessary to secure that the ratio of arsenic to tin in the solution is at least 3 : 1.  The mixed crystals are dissolved in water and treated with calcium carbonate to precipitate calcium stannate then with lime to precipitate calcium arsenate, then with more base to caustify the soda; or first with enough lime to precipitate calcium stannate and then with more lime to precipitate calcium arsenate and stannate together.ALSO:Arsenic, tin and antimony are separated from caustic soda, for instance from the mass resulting from refining lead by the process described in Specification 189,013, by treating the mass with hot water, separating the lead, separating the suspended antimonate from the dissolved arsenate and stannate, and cooling the solution to separate the arsenate and stannate from the excess of soda. The stannate is only satisfactorily precipitated in the presence of a sufficient quantity of arsenate, and additional arsenate may therefore be added if necessary to secure that the ratio of arsenic to tin in the solution is at least 3 : 1.  The mixed arsenate and stannate crystals are dissolved in water and treated with calcium carbonate to precipitate calcium stannate and then with lime to precipitate calcium arsenate, and finally with more lime to caustify the soda; or the solution may be treated first with enough lime to precipitate the stannate, and then with enough lime to precipitate the arsenate; or the solution may be treated with excess of lime to precipitate the stannate and arsenate together, the tin and arsenic being then separated by known ways; or the solution may be treated with alkali bicarbonate or carbon dioxide which precipitates tin oxide leaving sodium arsenate in solution; or the solution after separation of the tin may be treated to obtain other arsenates. According to the Provisional Specification lead arsenate may be obtained by treating the arsenate solution with lead nitrate, the sodium nitrate being recovered for use in the lead refining process; when the calcium stannate and arsenate are produced together the mixture may be heated with carbon in a current of air to separate arsenious oxide as a fume; and the sodium antimonate produced in the first operation may be treated with nitric acid to obtain antimony oxide and sodium nitrate.
Patent GB-1244300-A (GB)
Title: Apparatus for mixing and homogenising bulk material and method of operating the apparatus
Inventor: WOHLFARTH ARNON
IPC: B01F33/40
Filed: 1970-07-08
Abstract: 1,244,300. Mixing apparatus. FARBENFABRIKEN BAYER A.G. 8 July, 1970 [23 July, 1969], No. 33151/70. Heading B1C. Mixer for granular or pulverulent material consists of a container 1 with a riser in two sections 4, 5, with an annular gap between them and an air inlet 14, 10 at the bottom. The gap 6, 7 formed by the lower section 4 overlapping the upper section 6 of the riser, and stratification of the material in the container 7 reduced by material flowing through the gap 6. In operation, material enters through a pipe 22 inclined to a radius and the riser fills up to the bottom of the upper section and to a higher level outside the riser, so that air introduced at the bottom of the container finds its shortest leakage path through the riser. As the level of material drops, reverse circulation may start when the shortest air leakage path is through the material outside the riser. The air pressure required for starting may be reduced by providing a higher air inlet 16, or by closing the gap 6 by means of an inflatable ring (Fig. 2, not shown) so that the initial level in the riser is lower. The riser may have a number of annular gaps, and its sections may be adjustable in height relative to one another. The riser may be eccentrically disposed within the casing. (For Figure see next column)
Patent GB-506653-A (GB)
Title: Improvements in and relating to reflectors
IPC: F21V7/09
Filed: 1937-12-01
Abstract: 506,653. Lamp reflectors. SALANI, E., and PASSARDI, V. Dec. 1, 1937, No. 33203. Convention date, Jan. 9. [Class 75 (ii)] In a lamp reflector composed of a plurality of reflecting elements 10 arranged side by side with their main axes all in the same plane, each element is a strip which is curved only in the longitudinal direction and would if flattened be of elongated rectangular shape, and the elements are arranged in contact at their apices and more or less overlapping elsewhere, so that unless the light source 11 with which the reflector is used is moved, the composite beam produced has transverse dimensions which are constant in one direction and in a direction at right-angles thereto depend on the relative positions of the elements to one another. The strips may be parabolic, elliptical, or circular in longitudinal section, and may be of equal widths. An auxiliary spherical reflector 12 may be provided. The strips may be mounted on movable supports so as to be adjustable, or the light source may be movable. The Specification as open to inspection under Sect. 91 describes also the subject-matter of Specification 506,816. This subject - matter does not appear in the Specification as accepted.
Patent GB-1244599-A (GB)
Title: Devices for preventing corrosion of a brake disc
IPC: F16D65/00
Filed: 1970-07-09
Abstract: 1,244,599. Disc brakes. GENERAL MOTORS CORP. 9 July, 1970 [12 July, 1969], No. 33341/70. Heading F2E. A device for preventing corrosion of the brake disc 1 of a motor vehicle disc brake during transport or storage of the vehicle, comprises a support 6 securable adjacent the disc and holding a porous material, capable of being impregnated with a corrosion inhibitor, against the disc. As shown, the support 6 of resilient wire is hooked over the brake support pin 3 and includes an end 12 rotatably mounting a roller 14, of felt or foam material, enclosed in a housing 15 serving as a reservoir for a corrosion inhibitor such as oil. The porous material may, alternatively, be in strip form.
Patent GB-1228698-A (GB)
Inventor: WERLE E
IPC: C07K14/81
Filed: 1969-07-02
Abstract: 1,228,698. Enzymes; enzyme inhibitors. FARBENFABRIKEN BAYER A.G. 2 July, 1969 [15 July, 1968], No. 33356/69. Heading C3H. A process for the enrichment of a substance capable of forming a complex with a polypeptide which comprises linking a polypeptide by a covalent linkage to a carrier to form an addition product, introducing basic groups into the addition product, contacting the thus modified addition product in water with a solution of the substance to be enriched whereby a complex between the said substance and the addition product is formed, purifying the complex by washing, causing the complex to dissociate, and isolating the said substance. The substance to be purified may be an enzyme e.g. trypsin, chymotrypsin, kallicrein, plasmin, pepsin, rennin, ribonuclease, thrombin, amylase, papain, hyaluronidase, carboxypeptidase A or B, pancreatopeptidase E, penicillinase or cholinesterase, or an inhibitor such as kallicreintrypsin inhibitor ("Kuritz inhibitor") or the trypsin inhibitors obtained from pig and bovine pancreas, from seminal vesicles, from plant seeds or from potatoes. When the substance is an enzyme the polypeptide used in the process may be the corresponding inhibitor and vice versa. The carrier may be a resin containing anhydride or acid chloride groups or activated fluorine atoms, or carboxyl groups plus activated groups. The necessary basic groups may be introduced by treatment with N,N - dimethylethylene - diamine, agmatine, N - methyl- N<SP>1</SP> - (3 - amino - propyl) - piperazine, 4- amino - pyridine, 2 - amino - pyridine, or 3- amino 1 - cyclohexyl - aminopropane. Purification of the complex may be by washing with water and buffer solutions, and dissociation may be by altering pH or ion concentration, by displacement, or by adding urea or guanidine salts.
Patent GB-467470-A (GB)
Title: A process for the catalytic dehydrogenation of aliphatic hydrocarbons
IPC: C07C5/333
Filed: 1936-12-04
Abstract: In the dehydrogenation of aliphatic hydrocarbons, the activity of the catalyst is maintained by adding to the reaction mixture a controlled amount of water vapour and/or of hydrogen sulphide, selenide, or telluride.  Suitable amounts are not more than 3 per cent and preferably between 0,03 and 0,2 per cent by volume in the case of water vapour, and not more than 15 per cent by volume in the case of hydrogen sulphide, selenide, or telluride.  The catalyst may further be pretreated with the said substances at temperatures of 200--800 DEG  C., preferably 600 DEG  C.  The invention is particularly applicable to the use of non-metallic catalysts such as alumina, active carbon, nickel sulphide, zinc oxide, chromium oxide, magnesite, silica gel, &c., but metallic catalysts may also be used and numerous examples of metals, alloys, and metallic compounds are mentioned.  The catalysts may be used in solid form or deposited on carriers and may be used singly or in admixture with other catalysts or promoters.  The hydrocarbons to be treated may be single substances or mixtures and diluents may be added to them.  Several examples are given of the dehydrogenation of isobutane to isobutylene.
Patent GB-1515136-A (GB)
Title: Hydraulic control systems for use in mining installations
IPC: E21D23/18
Filed: 1975-08-11
Abstract: 1515136 Advancing mine roof supports GEWERKSCHAFT EISENHUTTE WESTFALIA 11 Aug 1975 [22 Aug 1974] 33380/75 Heading E1P An hydraulic control system, for use with a series of double-acting hydraulic rams 11, wherein each ram has a first chamber 21 to extend the ram 12 and a second chamber 20 to retract the ram, the piston surface area of the first being greater than that of the second; comprises a main fluid feed line P 1 , at least one further fluid feed line P 2 , a fluid return line R, means 14 for varying the pressure in the at least one further line P 2  and control devices 15 each associated with at least one of the rams 11 and serving to selectively connect the chambers 20, 21 of the ram 11 to fluid feed and return lines to operate the ram, wherein in one mode of operation to extend the rams, the associated device is set to connect the main line P 1  to the second chamber 20 and the further line P 2  to the first chamber 21 with the fluid being returned from the second chamber to the main line, whereby with the aid of the pressure varying means 14 the force exerted by the ram during extension can be controlled and in another mode of operation to retract the ram, the associated device is set to connect the return line R to the first chamber 21 and the main line P 1  to the second chamber 20. The control device 15 has three operative states, Fig. 2, (a) where the main line P 1  is connected to the second chamber 20 and the further line P 2  is connected to the first chamber 21 to extend the ram, (b) where both chambers 20, 21 are connected to the return line R, and (c) where the main line P, is connected to the second chamber 20, and the return line R is connected to the first chamber 21 to retract the ram. Lines 24, 25 connected to the main line P 1  and the return line R convey fluid to and from support frames 13. The rams 11 are connected between a longwall conveyor 10 and the frames 13.
Patent GB-773663-A (GB)
Title: Mechanical seal
IPC: F16J15/36
Filed: 1955-11-22
Abstract: 773,663. Stuffing-box substitutes. GARLOCK PACKING CO. Nov. 22, 1955 [Dec. 7, 1954], No. 33441/55. Class 122 (5). In a rubbing collar type seal in which a rubber &c. bellows 28 sealed at one end to one of the relatively rotating parts carries at its other end a rigid sealing ring 26 urged by a spring 30 into rubbing contact with a radial surface 58 on the other part, the bellows surrounds the outer periphery of the ring 26, has a radial flange 48 engaging an end face of the ring remote from the spring 30 and is secured to the sealing ring by a surrounding L-section clamping ring 70 whose radial flange 74 abuts the radial flange 48 of the bellows. An annular bead 46 on the sealing ring engages a groove 50 in the bellows or, alternatively, if such a groove is not provided, embeds itself in the bellows material. The spring 30 is compressed between the sealing ring 26 and a radial flange 38 of the bellows abutting and, preferably, cemented to the bottom of a metal shell 18 press-fitted in a recess in a pump impeller 16 and having an inner cylindrical portion 22 provided with an axial projection 66 engaging an axial slot 68 in the sealing ring 26. The surface 58 is formed on a sealing ring 26. The surface 58 is formed on a sealing ring 60 resiliently mounted on a packing- ring 62 in a recess 64 in the pump casing 14.