baber/WOPTO huggingface dataset:
Patent GB-569383-A (GB)
Title: Stabilization of polyvinyl acetal
IPC: C08K5/31
Filed: 1943-05-11
Abstract: Polyvinyl acetal compositions are stabilized to heat by incorporation therein of from 0.5-10.0 per cent by weight of the resin of guanidine, a substituted guanidine or a salt thereof. Specified polyvinyl acetals are the acetal, propional and butyral. Specified stabilizers are guanidine, dimethyl, trimethyl, diphenyl and di-o-tolyl guanidines, guanidine carbonate, acetate and sulphate and dimethyl guanidine acetate.  Films based on polyvinyl acetal resins may be stabilized to heat by the use of these stabilizers.  An example is given.
Patent GB-1206718-A (GB)
Title: Vaccine for use against brucelloses
IPC: A61K39/10
Filed: 1968-02-15
Abstract: 1,206,718. Brucellosis vaccine. INSTITUT MERIEUX. 15 Feb., 1968 [15 Feb., 1967], No. 7546/68. Heading A5B. A vaccine against brucellosis is produced by culturing a virulent and immunogenic strain of Brucella in a solid or liquid nutrient, killing it whilst in the "smooth phase" by addition of an aqueous chemical sterilant, e.g. formaldehyde, concentrating the product to at least 200,000,000 microbial bodies per ml. and introducing the killed bacterial suspension into an oily excipient.
Patent GB-438030-A (GB)
Title: Improvements in and relating to steam plant
IPC: F01K15/04
Filed: 1934-03-09
Abstract: 438,030. Steam power plant. BAUER, G., 82, Mittelweg, Hamburg, Germany. March 9, 1934, No. 7568. [Class 114] [See also Groups XIII and XXVI] A multi-pressure steam plant in which live steam of different pressures is used of which at least one pressure exceeds 20-25 atmospheres is arranged so that the engine fed by the super pressure generator is coupled to the output shaft in parallel with the engine utilizing the normal pressure steam, and a control means is included whereby the exhaust steam on the super pressure engine can be used at choice in the normal pressure engine or for the operation of auxiliary engines or for both purposes. A power plant for ships comprises a super pressure generator 1 providing steam for a super pressure engine 2 which is coupled by a gear 7 with the main reduction gear 5 of a propeller shaft 6. This shaft is also driven by gearing from a plant comprising turbines 3, 4 taking steam from a battery of normal pressure boilers 22. The exhaust pipe 8 from the super pressure generator is valved so that it may supply steam to the normal pressure engine 3 or may be led by a pipe 9 to drive auxiliaries. In a modification, a super pressure boiler supplies a similar super pressure engine 2 and a second engine 2<1> located adjacent to the boiler. This second turbine 21 is used for driving one or more blowers 18 and its exhaust is led to one or more pre-heaters 19. Alternatively or additionally, the turbine may drive the electric generator 23, for ships' lighting and when the ship is stationary can act as a power station owing to provision of an auxiliary condenser 29. In a further modification the two super pressure turbines are arranged adjacent the generator and one of them receives exhaust steam from the other and may be connected with the normal pressure boilers also. An arrangement is also described whereby such a plant can be produced as a modification of an existing plant in which case the gear wheels are replaced by other gears of different ratio in order to cope with the increased torque on the power shaft. Instead of using a separate generator a combined generator may be employed such as a normal water tube boiler of the divergent tube type into the furnace of which an evaporating coil is built which delivers super pressure steam. Specification 320,658, [Class 114], is referred to.
Patent GB-1021197-A (GB)
Title: Process for the manufacture of lactams
IPC: C07D201/04
Filed: 1964-02-24
Abstract: Lactams of formula <FORM:1021197/C2/1> where n is an integer between 7 and 17 are prepared by heating to a temperature between 60 DEG  and 200 DEG  C.  A mixture of the corresponding oxime of formula <FORM:1021197/C2/2> with phosphoric acid in which the concentration by weight of P2O5 is between 72 and 80%, then separating the formed lactam and recovering the phosphoric acid, which is re-cycled for the following operation, being periodically purified before recycling. The preferred minimum proportion of phosphoric acid to oxime is 0.7 parts to 1 part by weight; more advantageously 1 to 2 parts of acid to 1 part of oxime are used. The reaction mixture is diluted with water to bring the concentration of orthophosphoric acid to below 60% by weight before extraction of the lactam.ALSO:Nitrogenous and other organic impurities can be removed from phosphoric acid in one of the following ways.  (1) Treatment with concentrated nitric acid and heating.  The organic materials are destroyed by nitric acid and nitrous fumes are evolved.  The quantity of nitric acid necessary depends on the amount of impurities and can easily be determined when the evolution of nitrous fumes ceases.  The nitric acid is suitably used in 50 to 100% concentration.  To prevent foaming the temperature is raised gradually and the nitric acid is added slowly.  (2) Treatment of a dilute solution with cation exchange resins. Suitable resins contain sulphonic groups such as sulphonated polystyrene. The concentration of phosphoric acid should be at most 50%, preferably 20-40%.  (3) Treatment of a dilute solution with chlorine.  When a current of chlorine is passed into an aqueous solution of phosphoric acid any organic impurities separate as a thick oil containing chlorinated organic products which can be separated by filtration or extraction.  The preferred concentration of phosphoric acid in aqueous solution is from 30-60%.
Patent GB-289373-A (GB)
Title: Lacquers
IPC: C09D101/18
Filed: 1928-03-12
Abstract: 289,373. Carbide & Carbon Chemicals Corporation, (Assignees of Davidson, J. G.). April 25, 1927, [Convention date]. Lacquers.-Vehicles or thinners for pyroxylin lacquers comprise in combination a pyroxylin solvent of relatively low boiling-point, such as ethyl acetate with or without ethyl alcohol; a plurality of pyroxylin solvents of relatively high boiling-point essentially comprising the monoethyl ether of ethylene glycol; and a diluent and gum solvent having a boiling range such that the solvent properties of the whole mixture remain constant until evaporation is nearly over when the solvent properties of the pyroxylin solvents predominate. Suitable materials for use as diluents and gum solvents are hydrocarbons such as toluol or mixtures thereof with other hvdrocarbons such as xylol or petroleum naphtha. The low boiling-point solvents should not compise more than 30 per cent, and the high boiling- point solvents more than 20 per cent of the mixture. Specification 238,485 is referred to.
Patent GB-868221-A (GB)
Title: A machine tool having an indexing mechanism
IPC: F15B21/08
Filed: 1959-03-05
Abstract: 868,221. Electric programme controls. KEARNEY & TRECKER CORPORATION. March 5, 1959 [March 10, 1958], No. 7664/59. Class 38 (6). [Also in Group XXII] A machine-tool comprises an indexible table 24, Fig. 2, means 172 operated with the member to actuate position-determining switches 187- 189 and a motor 177 connected to move or stop the member according to the condition of coincidence between the switches and pre-set selector switches 325, 326, Fig. 6. The table is rotated in either direction by the fluid-pressure motor 177 through gearing, the motor also rotating the cam drum 172 through gearing 162. A solenoid-operated valve determines whether the motor 177 runs at fast or slow speeds, the speeds being set by adjustable throttle valves. The cam drum 172, Fig. 4, carries discs bearing lobes 181; 182, 182A; 183, 183A; and 184, 184A, 184B, 184C, which lobes operate switches 187-191. The switch 187 is to indicate the zero position of the table, the switches 188, 189 are binary switches to by-pass or select indexing positions and the switches 190, 191 slow the table to its lower speed and then stop it in an indexed position. To index the table under manual control, a knob 323, Fig. 6, is set to the required position to actuate the switches 325, 326 by lobes 334, 337 or 339. If the knob is set to 180 degrees, the switch 326 only is actuated. When a start button is depressed, the table is unclamped and rotation commences. Rotation is at fast rate as soon as a pressure switch is actuated in the hydraulic supply. Indexing continues until correspondence exists between the setting of switches 325, 326 and the setting of switches 188, 189 actuated by the cam drum 172. Instead of setting the switches 325, 326 by manual means, corresponding switches may be actuated by solenoids controlled by a punched or magnetic tape. The tape also controls a solenoid to determine the direction of indexing movement.
Patent GB-557864-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03G3/22
Filed: 1942-06-05
Abstract: 557,864. Wireless receiving apparatus. STANDARD TELEPHONES & CABLES, Ltd., SCULLY, C. T., and HOUGHTON, L. W. June 5, 1942, No. 7677. [Class 40 (v)] The signal level applied from the aerial to the first amplifying stage of a wireless receiver is controlled by an indirectly heated thermistor or thermally sensitive resistance element. Fig. 1 shows a thermistor T in parallel with the primary winding of an input transformer IT and an impedance Z provided to increase the range of control. The heating coil r may be controlled manually or by an automatic volume control voltage derived from the receiver. Alternatively the grid of the first amplifying stage may be connected to the junction of the thermistor T with the impedance Z, Fig. 2 (not shown) and the thermistor may have a positive temperature coefficient of resistance in which case the positions of the thermistor T and the impedance Z may be interchanged or the direction of control reversed. To protect a receiver in close proximity to a transmitter, Fig. 4, a circuit C3L tuned to the unwanted signal is arranged in the aerial as a rejector circuit and to supply the heater coil of a thermistor. Alternatively an acceptor circuit tuned to the interference may be used, Fig. 3 (not shown) as a shunt to the indirectly heated thermistor resistance and be arranged to supply energy to the heating coil. Alternatively the circuit tuned to the unwanted signal and supplying the heating coil of the thermistor may be arranged in the anode circuit of an amplifying valve.
Patent GB-1100833-A (GB)
Title: Apparatus for processing domestic garbage and like material
IPC: B03B9/06
Filed: 1965-02-23
Abstract: 1,100,833. Separating garbage. R. L. CHEVALLIER. 23 Feb., 1965 [27 Feb. 1964], No. 7754/65. Heading B2H. Domestic garbage dumped on to a series of rotary shafts equipped with combing discs arranged in staggered fashion is broken up and the fibrous and powdery material discharged by gravity for collection below the combing discs while the rejected solid objects are conveyed to the discharge end of the apparatus. Pivoted arms (28), Fig. 6 (not shown) are mounted above the combing discs to restrain bulky fibrous material. To prevent rejects from falling through the combing discs, there is provided a grid (26), Fig. 9 having openings (27) which correspond in shape to the discs. The combing discs are driven through gearing at equal or unequal speeds in the same or opposite direction by a pair of motors 7 disposed one on each side of the apparatus which may be moved as a whole along a track 4 formed on the edges of an outrigger 5. The combing discs are mounted in staggered fashion on square-sectioned shafts and each may be made of (a) two metal cups pressed together and provided with peripheral teeth and projections on their oblique faces, Figs. 7 and 8 (not shown), (b) two polygonal plates welded together so that their corners project, Figs. 10, 11 (not shown), (c) a polygonal plate provided on each side with projecting bars, Figs. 12, 13 (not shown), (d) a disc of circular saw-like shape. Fig. 15 (not shown) or (e) a disc formed of arms which are rectangular, Fig. 14 (not shown), have terminal teeth and side projections. Fig. 16 (not shown) or shaped as semi-hexagons and have side projections, Fig. 17 (not shown).
Patent GB-648615-A (GB)
Title: Improvements in or relating to methods of and means for producing stratified glass objects
IPC: C03C17/00
Filed: 1948-03-15
Abstract: 648,615. Glass. SKLARNY INWALD, NARODNI PODNIK. March 15, 1948, No. 7770. Convention date, March 15, 1947. [Class 56] A hollow stratified glass object is formed by blowing a glass member, pressing out a complementary glass member independently, positioning the blown member within the pressed member and uniting them by heat and by continued blowing until the final shape is attained. The blown member is formed on a blowpipe within a three-part mould 8 comprising two pivoted portions and a removable bottom 9. The bottom is removed, leaving a portion of the blown member projecting, and a second mould 14 containing the pressed member is brought thereunder and raised and the blown member is deposited in the pressed member. The supply of gas to the burners is automatically controlled by the movement of the table carrying the mould 14 and mould bottom 9 and the article is finished by continued blowing.
Patent GB-858793-A (GB)
Title: Improvements in epoxidation
IPC: C07F9/08
Filed: 1959-03-06
Abstract: A polymer or copolymer of butadiene, is epoxidised by introducing said compound and peracetic acid continuously into an elongated reaction zone, the length of which equals 100 to 10,000 4K/p  where K is the area of the smallest perpendicular cross-section of said zone, and wherein the expression 4K/p  is in the range of from 0,63 to 13,0 cm. under pressure sufficient to maintain a liquid phase reaction mixture; and for a residence time at least sufficient to epoxidise at least one carbon to carbon ethylenic bond of the ethylenically unsaturated compound, said residence time not exceeding 45 minutes. A plurality of elongated reaction zones may be used in series or parallel.  Temperatures of 0-150 DEG C., preferably 20-130 DEG C. are specified, with pressures up to 100 atmospheres.  The peracetic acid is preferably introduced in an inert organic solvent, specifically containing 5-50 weight per cent of peracetic acid. Generally the molar ratio of peracetic acid to ethylenic double bond should be 0,05 to 5,0, preferably 0,2 to 2,0 Specification 784,620 is referred to.ALSO:An ethylenically unsaturated compound containing at least 3 carbon atoms, the atoms directly joined to the ethylenic carbon atoms being hydrogen or carbon, is epoxidised by introducing said compound and peracetic acid continuously into an elongated reaction zone, the length of which equals 100 to 10,000 <FORM:0858793/IV(b)/1> where K is the area of the smallest perpendicular cross section of said zone, and wherein the expression <FORM:0858793/IV(b)/2> is in the range of from 0,63 to 13,0 cm. under pressure sufficient to maintain a liquid phase reaction mixture ; and for a residence time at least sufficient to epoxidise at least one carbon to carbon ethylenic bond of the ethylenically unsaturated compound, said residence time not exceeding 45 minutes.  A plurality of elongated reaction zones may be used in series or parallel.  Temperatures of 0-150 DEG  C., preferably 20-130 DEG  C. are specified, with pressures up to 100 atmospheres.  The peracetic acid is preferably introduced in an inert organic solvent, specifically containing 5-50 weight per cent. of peracetic acid. Generally the molar ratio of peracetic acid to ethylenic double bond should be 0,05 to 5,0, preferably 0,2 to 2,0.  A polymerisation inhibitor may be present.  Specified ethylenic compounds include hydrocarbons, alcohols, phenols, ethers, amides, imides, nitriles, ketones, carboxylic acids and esters, acetals, halocarbons and esters of phosphorus acids.  Compounds prepared in Examples from the corresponding ethylenic compounds are (1) and (2) propylene oxide ; (3) isobutylene oxide ; (4) butadiene monoxide ; (5) butadiene dioxide (from the monoxide) ; (6) divinylbenzene dioxide ; (7) ethyl 2, 3-epoxybutyrate ; (8) 6-methyl-3, 4-epoxycyclohexylmethyl 6-methyl-3,4-epoxy-cyclohexanecarboxylate ; (9) epoxystearic acid (from oleic acid) ; (10) 3, 4-epoxycyclohexane-carbonitrile ; and (11) bis (2, 3-epoxycyclopentyl) ether.  Specification 784,620 is referred to.
Patent GB-1177191-A (GB)
Title: Diamond Abrasive Tool
IPC: B24D18/00
Filed: 1968-02-19
Abstract: 1,177,191. Abrasive tools. NORTON CO. 19 Feb., 1968 [23 Feb., 1967], No. 7953/68. Heading B3D. [Also in Division C4] A bonded abrasive tool having an abrasive surface layer mounted on a driving centre comprises a plurality of abrasive grains 5 in the surface layer 2 of a predetermined grit size, an inert particulate filler material in the surface layer having particles 13 of approximately the same size as the grains 5, and a metal bond 6 of die cast metal filling the voids between and bonding the abrasive grain and the filler material to the driving centre. The abrasive grains may be of diamond, silicon carbide, alumina or other abrasive material and have a grit size from 80 to 200. The filler material consists of chips of aluminium and antimony. The abrasive grains and filler material may be mixed by tumbling and inserted into the space between a mould 7 having a desired contour 10 and a centre 11, the mould and centre being made of aluminium alloy. The grains and filler material are bonded to the mould and centre by die cast metal comprising an alloy of 65% zinc, with traces of copper and aluminium about 32% cadmium and about 3% silver solder. Thereafter the mould is removed by machining or stripping, the portion 12 of the centre machined away and a bore formed in the centre.
Patent GB-197479-A (GB)
Title: Improvements in and relating to fluid pressure indicating and recording apparatus
IPC: G01L23/06
Filed: 1922-03-20
Abstract: 197,479. Stevens, H. L. March 20, 1922. Indicating, optical devices for.-The variations in thickness of a film of air or liquid between the curved surfaces of two glass blocks pressed together is utilized to produce interference phenomena in pressure-gauge apparatus. In the example shown the invention is applied to a pressure indicator for a rapidly moving internal combustion engine. The casing 1 is provided with a screwed boss 2 for connection with a cylinder head. The pressure acts upon a stiff corrugated diaphragm 3 to which is secured a rod 4 extending about half-way into the casing and carrying at the other end a cup 6 which supports a glass block 5 the upper surface of which is spherical and of large radius. A corrugated diaphragm 7 serves to keep the rod 4 central. In contact with the surface of the block 5 is the lower surface of a glass block 8, the support of which may be adjusted by set screws 10 to centre the point of contact. Lenses 12, 13 and a semireflecting mirror 14 are provided as shown. The blocks are kept in contact by a spring 11. Monochromatic light from a source 17 is condensed on to the film of gas between the curved surfaces and the Newton rings after reflection by the mirror 14 and magnification by the lens 13 pass through a slit in a screen on to a photographic paper on a drum 15 driven at half the engine speed. A stroboscopic device may be substituted for the drum 15 and the rings may be directly observed, or alternatively the illumination of the film may be effected by a stroboscopically illuminated Neon lamp. The casing may be filled with water or other liquid to prevent ill effects due to direct conduction of heat from the engine
Patent GB-488124-A (GB)
Title: Improvements in or relating to electric battery lamps
IPC: F21Y101/00
Filed: 1937-03-20
Abstract: 488,124. Electric battery lamps. EVER READY CO. (GREAT BRITAIN), Ltd., and TERRY, M. C. March 20, 1937, No. 8287. [Class 75 (iv)] In an electric torch, the bulb holder 12 and a coaxial tubular light transmitting member 24 provided with two or more portions having different light transmitting characteristics, are relatively movable so as to cause lateral rays from the bulb to pass through different portions of the member. In the casing A of the torch are mounted a reflector B and the holder 12 for the bulb C. The reflector is formed with a central opening in which is secured a ring 11 supporting a hood H for intercepting direct rays from the bulb. The member 24 is clamped at its lower end between axially adjustable members 26, 30 encircling the holder 12 and projects through the ring 11. In the form shown the member comprises two bands 24a, 24b of different colours and when fully projected, the outer band is within the hood H. The light switch and the member 24 may be operated separately or by a common control. Specification 477,851 is referred to.
Patent GB-1179730-A (GB)
Title: Extrusion Heads for Extruding Sheets
Inventor: ROTHMEYER FRIEDRICH
IPC: B29C48/08
Filed: 1967-02-21
Abstract: 1,179,730. Extrusion heads. F. ROTHEMEYER. 21 Feb., 1967 [15 April, 1966], No. 8319/67. Heading B5A. An extrusion head for extruding webs or sheets of PVC, methacrylate resin or other highly viscous materials is designed such that all flow lines S between inlet A and the outlet slot are of the same minimum length and comprises a plane, fan-like introduction zone I, a plane lip zone III and an intermediate equalizing zone II therebetween, all the zones being of constant and equal thickness and II being so shaped that (1) the lengths of flow lines S from the introduction zone/equalizing zone boundary to the equalizing zone/lip zone boundary are equal; (2) the ratio of the distance along an isobar Is (hereinafter defined) between any one pair of flow lines to the distance along the same isobar between any other pair of flow lines is equal for all isobars; and (3) the flow lines are substantially normal to the isobars. In this respect, " isobar " refers to lines at an equal pressure drop i.e. lines joining points on the flow lines at equal distances from the inlet A of the introduction zone. Equations for the shape of the flow volume of the head are given.
Patent GB-653683-A (GB)
Title: Improvements relating to clips or clamps
IPC: F16L3/24
Filed: 1948-03-22
Abstract: 653,683. Clip fastenings; hooks. BULLIVANT, T., and SWEENEY, E. March 22, 1948, No. 8382. [Classes 44 and 89(ii)] A clip or clamp comprises two members which are pivoted together or to a further member or members, and which provide cooperating jaws for gripping an article, one or more of the members being adapted to support or engage a second article, or a number of such members co-operating to support or engage a second article, the pivoted members having means, spaced from the pivots, which, when the members are in gripping position, are aligned with one another and whereby the pivoted members are locked or are adapted to be locked in gripping position. In the form shown in Fig. 1, two jaws, each carrying a hook 12, stem 11 and gripping jaw 13, are pivoted together at 17. The jaws are adapted to grip the flange of a beam 100, and the hooks 12 support pipes or the like. The clamp is self-closing even when unloaded, but holes 18 are provided for the insertion of a locking pin. Nose pieces or lugs may be welded to or secured within the jaws to fit smaller flanges, e.g. as in Fig. 3, in which lugs 23 co-operate with the upper arms 15 of the jaws to engage the flanges. The hooks 12 may extend at a right angle or any other angle to the plane of the jaws. Fig. 4 shows a form adapted to grip an angle section beam. The clamp may comprise three members, e.g. as shown in Fig. 7, two members having engaging jaws 44, stems 41 and supporting arms 42, being pivoted to a third member 50. Fig. 11 shows a modification of this form. In the form shown in Fig. 8, the article supporting arms 54 are formed on the member 53, and the pivoted engaging jaws 44 are locked by pins at 52. Fig. 6 shows a clamp having three members pivoted together at 67; Fig. 13 a form comprising two crossed members 11 pivoted at 17 and having jaws 27 adapted to grip a vertical beam 104, and Fig. 16 a threemember form for suspension from an I beam.