baber/WOPTO huggingface dataset:
Patent GB-1118225-A (GB)
Title: Joint connection for metal pipes
Inventor: DURET JEAN LOUIS ALBERT
IPC: F16L15/04
Filed: 1966-05-06
Abstract: 1,118,225. Pipe Joints. VALLOUREC. 6 May, 1966 [5 Nov., 1965], No. 20200/66. Heading F2G. The spigot and socket ends 1, 5 of pipes which may be coated with enamel or plastics material are provided with mating tapered screwthreads 2, 6 the bottom of the socket being formed with a convex conical surface 7 which is engaged by a concave conical surface on the spigot. The surface 7 may adjoin a concave conical surface 8 by which a chamfer 4 on the spigot deformed. The grooves of the screwthreads on the socket may progressively increase in depth and the threads of the spigot may progressively increase in height. In modifications (a), a ring of hard steel, having attached to the inner periphery thereof a plastics lipped ring, is disposed between the surfaces 3, 7; (b) a packing ring is received in a groove formed in the surface 3; and (c) the plastics coatings of the pipes are of greater thickness at the joint.
Patent GB-153689-A (GB)
Title: Improvements in and relating to controlling apparatus for electrically operated hoisting mechanism and the like
IPC: B66B1/08
Filed: 1919-08-18
Abstract: 153,689. British Thomson - Houston Co., and Given, R. D. Aug. 18, 1919. Electric plant.-In order to bring the load to rest automatically at a predetermined position in electrically-operated hoisting-apparatus a discriminating relay DR is employed, which is normally biassed by gravity and a series winding 9 to close contacts 23, 24. These contacts are opened by the increase of potential across a shunt winding 16, created by moving a potentiometer contact 25 by means of a cam 28 operated from the driving-motor M. This in succession causes (1) resistance to be inserted in the motor circuit, (2) a light drifting brake DB and a heavy brake SBD to be applied, and (3) the motor circuit to be opened. Fig. 1 shows the circuits for forward and reverse driving. When the controller MC is moved to the right, the forward contacts C1, C3 are closed through the shunt circuit 2, 3, 4, 5, 6, L<1>. This closes the main contacts 7, 8, and the motor is run up to full speed by successively cutting-out the resistance sections R<3> - - R<8> under current-limit control. The relay DR is also under the control of a shunt winding 16, the potential across which is, at any moment, determined by the position of the arm 25 of the potentiometer P<1> (for forward running), the circuit passing through the contacts 17, 18 of the controller MC. As the load approaches the point at which it should be stopped, the potentiometer arm 25 is thrust to the right by a cam 28 on a disk 30 driven through a belt 32 from the motor shaft. When the electromotive force across the winding 16 has thereby reached a sufficient value, the contacts 23, 24 are opened, de-energizing the contacts C<5> - - C<10>, and inserting the whole of the resistance sections into the armature circuit. Simultaneously the negative end of the winding of a contactor C<13> is broken and a light drifting-brake DB is applied to slow down the motor. Finally the mechanical gearing connecting the arm 25 and cam 28 throws open the limit switch L<1> and breaks the current to the motor at the contacts 7, 8. This also deenergizes the winding of a contactor C<11>, applies a heavy-type brake SB to stop the motor, and opens the negative main at C<12>. By suitably shaping the cams 28, 29, the movement of the arms 25, 26 (for forward and reverse driving respectively) can be made to open the contacts 23, 24 at such a time as will bring the motor and load to rest at any definite point, final adjustment being obtained either by rotating the cams 28, 29 on their disks or by altering the setting of the rheostat contacts R<1>, R<2>. The cams 28, 29 are carried by disks 30, 31 mounted on a common spindle, each disk making somewhat less than one complete revolution during each lifting or lowering operation, so that only the cam 28 is operative on the forward run and the cam 29 on the reverse run.
Patent GB-1466170-A (GB)
Title: Manufacture of a relief coated support
IPC: D06N7/00
Filed: 1974-05-08
Abstract: 1466170 Laminate containing relief coating EUROFLOOR SA 8 May 1974 [21 Nov 1973] 20285/74 Heading B5N [Also in Divisions B2 and B6] A support bearing a relief composite coating is made by printing a decoration on to the support, applying at least one discontinuous layer of a transparent plastisol over the printed decoration and in registration therewith, and passing the product through a gelation oven. A transparent wear layer may be applied over the reliefimparting plastisol, either before or after passage through the oven, by lamination (which may be effected by adhesive with passage of the layers beneath a magnetic rod held thereagainst by a magnet) or by air-knife or curtain coating of a plastisol. A continuous transparent layer may also be applied between the printed decoration and relief-imparting plastisol. The support may be a stable support (i.e. dimensionally stable at the gelation temperature of the plastisol) or a deformable support, but in the latter case must be laminated with a stable support prior to reaching the gelation oven. Further support layers may be laminated to the coated product after gelation. Suitable stable supports are woven or non-woven fabrics, wood, metal, synthetic resin sheets, paper or a PVC sheet (which may be cellular) laminated to an asbestos felt. The decoration may be printed on the support by a heliographic printing technique and the plastisol applied in registration therewith by silk-screening. In Examples; (2) a non-woven polyester fabric is impregnated with PVC plastisol, heated, printed with pigmented vinyl chloride copolymer, laminated with a transparent PVC film using a vinyl copolymer adhesive, screen-printed with vinyl acetate copolymer paste and gelled; the support is subsequently laminated with two PVC sheets: (3) a PVC film is printed as before, laminated with PVC-coated asbestos felt which is also bonded to an expandable PVC layer, relief printed as before and heated in a gelation oven; the product is further laminated to a transparent PVC film and then heated to blow the expandable layer. The products are used as floor or wall coverings.
Patent GB-810922-A (GB)
Title: Apparatus for stretching or shrinking continuously moving fully synthetic filaments or tapes
IPC: D02J1/22
Filed: 1955-07-13
Abstract: <PICT:0810922/IV (a)/1> Synthetic filaments are stretched or shrunk by means of coaxial, independently driven stretching rollers 2, 5 and transfer means constituted by a pulley 4 which measures and regulates the stretching or shrinkage tension.  The rollers 2, 5 may be independently heated or cooled and may be rough, smooth, rubber-covered or of cage form for liquid treatment.  The pulley 4 may be mounted on a pressure-measuring box or on a rod capable of deflecting under the tension in the filament, the pressure or amount of bending being used to control the speeds of rotation of the rollers 2, 5 directly, as by relays or continuously variable amplifiers, so as to maintain constant tension.  The treatment of polyurethane filaments is mentioned.  Specification 784,535 is referred to.
Patent GB-625391-A (GB)
Title: Improvements in and relating to cigarette filter plugs and cigarettes made therewith
IPC: A24D3/04
Filed: 1947-07-28
Abstract: A cigarette filter plug, comprising a wad of cotton wool, has embedded within it one or more small-bored tubes extending longitudinally through the whole or a portion of its length, which thus can be greater than normal.  The tubes, preferably made of a plastic material or a plasticized material or a plasticized fabric, are held between two or more slivers of cotton.  They may have different lengths.
Patent GB-1023565-A (GB)
Title: Complementary transistor structure
IPC: H01L27/082
Filed: 1964-05-15
Abstract: 1,023,565. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. May 15, 1964 [May 31, 1963], No. 20309/64. Heading H1K.  A pair of complementary transistors are formed on a single semi-conductor substrate by a process in which the base zone of the first transistor is made in the same diffusion process as the collector of the second, the emitter and collector of the first and the base of the other formed in a common second diffusion step, and the emitter of the second made in a third diffusion step. In a typical process N-type silicon is first epitaxially deposited on a prepared 111 face of a 20 ohm. cm. P-type silicon wafer from an atmosphere produced either by bubbling hydrogen through a solution of phosphorus trichloride in silicon tetrachloride or by mixing hydrogen streams containing phosphine and silicon tetrachloride respectively. Two regions of the resulting N-layer are next isolated by selective diffusion through the layer of boron from a vapour deposited layer of borosilicate glass. The dot emitter 14a and annular collector 14b (Fig. 4) of one transistor and the base 14c of the other are then similarly formed by a shorter diffusion of boron through apertures in an oxide mask. Afterwards the emitter 16c of the other transistor and very heavily doped N+ contact regions 16a and 16b are likewise formed by diffusion. In this step the diffusion source is formed on the surface by heating in a mixture of oxygen, nitrogen and phosphorus oxychloride. Finally an aluminium layer is deposited over a suitably apertured protective oxide layer to form contacts to the various zones, the required inter-connections being fashioned from this by etching. In a typical arrangement (Fig. 7, not shown) the base and collector of one transistor are respectively connected to the collector and emitter of the other. This arrangement may be combined (Fig. 9, not shown) with a further transistor or may form part of a larger integrated network including diodes and other circuit elements. In either case the arrangements are generally made in multiple and then subdivided. Germanium or A III B v  compounds may be used instead of silicon in making them.
Patent GB-666305-A (GB)
Title: Improvements in or relating to a method of making a composition for the suppression of coccidial infection in poultry
Filed: 1949-08-28
Abstract: Diphenols having the formula <FORM:0666305/IV (b)/1> R1 being a hydrogen atom or an alkyl radical containing 1-3 carbon atoms, R2 being a hydrogen atom or an alkyl radical, R3 being a phenyl or alkyl radical, and the sum of the carbon atoms in R2 and R3 being from 1 to 6, are prepared by reacting a mol. of the appropriate aldehyde or ketone with 2 mols. of phenol or a substituted phenol in the presence of an acid condensing agent such as hydrochloric acid, sulphuric acid or gaseous hydrogen chloride.  The reactants may be mixed in any desired order, and the reaction is preferably carried out at a temperature of 40 DEG  C. with the phenol in excess.
Patent GB-1128766-A (GB)
Title: Improvements in or relating to shield tunnelling machines
IPC: E21D9/08
Filed: 1965-11-22
Abstract: 1,128,766. Tunnelling machines. JAMES S. ROBBINS & ASSOCIATES Inc. 22 Nov., 1965 [1 Dec., 1964], No. 20354/68. Divided out of 1.128.765. Heading E1F. Between the tail section 14 of a tunnelling machine and a tunnel lining L erected about the section as the machine is advanced underground is a seal PS that is secured to the section 14 by tongues on the seal being releasably secused in sockets formed on the section around an annular, peripheral zone thereof. The constructional components of the seal by which the seal is biassed against the lining form the subject matter of Specification 1.088,363.
Patent GB-148493-A (GB)
Title: Improvements in loom shuttle eyes or threaders
IPC: D03J5/24
Filed: 1920-07-10
Abstract: 148,493. Brown, W. B. Aug. 2, 1915, [Convention date]. Shuttles.-A guide-eye for hand-threaded shuttles comprises a tubular body 5 having a bore 6 open at one end, a flat face 7<1> provided with a longitudinal slot 7 communicating with the bore, openings 8 passing through the guide, and a second slot 9 extending diagonally from the openings and opening out from one side of the guide at a point beyond the end of the slot 7. The slots 7, 9 communicate with a slot 10 in the body of the shuttle. A groove 12 is provided in the guide so that it can be turned slightly by a screwdriver to vary the tension of the weft, the guide then being secured by a pin passing through an aperture 14 in the guide and a hole in the shuttle. Subsequent adjustment of the tension is effected by removing the pin, turning the guide, and boring a fresh aperture therein.
Patent GB-597080-A (GB)
Title: Improvements in or relating to a photographic shutter
IPC: G03B9/64
Filed: 1945-08-09
Abstract: 597,080. Photographic shutters. KODAK, Ltd. Aug. 9, 1945, No. 20465. Convention date, Aug. 17, 1944. [Class 98 (i)] In a shutter of the kind having a single operating lever which is movable in one direction to move a master member controlling the shutter blades to a setting position where the member is held by a latch, the operating lever being movable in the opposite direction to release the latch to effect an exposure, the operating lever is returned by spring means to a position of rest between the setting and releasing positions after each actuation and means are provided for preventing double movement of said lever in either direction. As shown, the operating lever 5 consists of a handle 6 and an arcuate plate 7 slotted at 8 to slide on studs 9, 10 carried by the mechanism base-plate 11, the handle 6 carrying a stud 13 to which equal springs 14, 15 anchored to the base-plate are attached so as to return the lever to the neutral position II after it has been actuated. To make an exposure, the lever 5 is moved to the position I when the nose 45 of the plate 7 trips the latch 42 by engaging its tail 44, causing the master member 32 to rotate counterclockwise to oscillate the blade ring 22 and open and close the shutter. On releasing the lever 5 it returns to the neutral position II, and to reset the shutter it is moved to the position III, when the nose 40 of the plate 7 presses against a depending flange 39 on the master member rotating it clockwise until the latch 42 engages the latch element 41, the latch 30 which engages the projection 27 on the blade ring to operate the shutter sliding past this projection, and thus not affecting the shutter blades. To prevent two consecutive movements in the same direction of the lever 5, the motion of the plate 7 is transmitted by a rack and pinion 12, 52 to a disc 53 against which a pawl 58, pivotally mounted on a lever 59 supported on the pivot 43, is urged by a spring 65 so as to bind against the edge 56 of the disc if the direction of movement is changed before the maximum travel of the plate 7, e.g. from " release " to " set " position is completed. In alternative constructions, the pawl 58 is pivoted on the lever 59 and is urged against the edge of the disc, which may be serrated, by a leaf spring carried on the lever. To permit " time " exposures to be made, the " one-way " mechanism is put out of action by moving the exposure time adjusting lever 63, which in the " time " position T moves the end 60 of the lever 59 away from the stop 61, against which it is held by a spring 62, so as to draw 'the pawl 58 out of contact with the disc 53, permitting a double operation of the trigger release.
Patent GB-1033253-A (GB)
Title: Pyrrolo[1,2-a]-indoles
IPC: A61K31/40
Filed: 1963-05-23
Abstract: Compounds of the general formula <FORM:1033253/C2/1> wherein R1 is H, C1- 6 alkanoyl, C1- 6 alkyl or aralkyl; R2 is H or alkyl; R5 is H or CHO; C1 is CH2 or CO; and C2 is CH2, CH-carbalkoxy, CH-carboxamido, or CHCN are prepared by cyclizing a b -(substituted ethyl) indole-2-carboxylic acid or an ester, amide or nitrile derivative containing the group R1O- in the 5-position and R2- in the 6-position, in which the b -substituent is a carboxyl, a carboxylic acid ester or amide or a nitrile group and wherein the 1-(b -substituted ethyl) indole-2-carboxylic ester (or amide or nitrile derivative) may be prepared in situ by condensation of a 1-unsubstituted indole 2-carboxylic acid ester (or amide or nitrile derivative) and acrylonitrile or an acrylic acid ester or amide and, if desired (when the product above is a b -keto ester), heating with acid to decarboxylate and form the corresponding 1-ketopyrrolo[1,2-a]indole, and further heating the product with hydrazine in the presence of a base to give 2,3-dihydro-1H-pyrrolo-[1,2-a]indole and/or formylating either the 1-ketopyrrolo-indole or the 2,3-dihydropyrrolo indole above to give the 9-formyl derivative.  Methyl 5 - methoxy - 6 - methyl - 2 - indole carboxylate is prepared from 2,5-dimethyl-4-nitrophenol through the dimethyl ether, 5-methoxy-4 - methyl - 2 - nitrophenylpyruvic acid and 5-methoxy - 6 - methyl - 2 - indole carboxylic acid. Similarly a prepared ethyl 5 - benzyloxy - 6-methyl - 2 - indole carboxylate through 4-benzyloxy - 2,5 - dimethylnitrobenzene and ethyl 5 - benzyloxy - 4 - methyl - 2 - nitrophenylpyruvate.
Patent GB-499665-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J43/08
Filed: 1937-07-26
Abstract: 499,665. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 26, 1937, No. 20671. Convention date, July 25, 1936. [Class 39 (i)] A thermionic valve contains an electron velocity filter in front of the control grid whereby the steepness of the characteristic curve is increased ; the velocity filter consists of two electrodes parallel to and enclosing the electron beam and a magnetic field transverse to the field of these electrodes, and the stream. In one form, the tube comprises a cathode 9 with an emissive tip 11, an accelerating grid 13, filter electrodes 15, 17, producing a transverse field and forming, with the magnetic field producing means 43, 45, a velocity selector, a control grid 19 and an anode 21. One or more electron multiplier stages may be inserted between the control grid and the anode, and the multiplier may be of the crossed magnetic and electric field type, with the control grid arranged in the plane of the secondary cathodes and the same magnet serving to produce the fields of the multiplier and the filter. In order to reduce the effect of the magnet in the filter to the required amount the filter may be enclosed in a thin screen of magnetic material. Specification 464,413 is referred to.
Patent GB-597297-A (GB)
Title: Instrument for determining the accuracy of feed screw motions
IPC: B23Q23/00
Filed: 1945-08-13
Abstract: 597,297. Testing feed screws. SEARS, J. E. Aug. 13, 1945, No. 20767. [Class 106 (ii)] In an instrument for determining the accuracy of pitch of feed screw motions, the pitch of the screw being tested is compared with that of a master member, which essentially comprises a series of equally spaced valleys, by traversing a follower along the master by the action of the screw under test, the follower actuating a recording stylus which, during the brief interval when the follower lodges at the bottom of each valley, sweeps across a steadily moving recording surface. The recording surface is also given a succession of minute, nominally instantaneous disturbances in the direction of its travel which are timed at equal intervals in relation to the screw under test and synchronize in a regular manner with the sweeps of the stylus. The instrument is preferably mounted on the saddle of the machine tool whose feed screw motion is to be tested and is moved past a fixed master member (preferably a screwed rod having threads as shown in Fig. 5) so that a feeler 7 at the end of a lever 6, 8 passes over the profile of the master in an intermittent fashion, tending to be held momentarily in a valley of the master thread (Fig. 5) and then slipping over a flattened crest to the next valley and causing corresponding sweeping movement of the lever 6, 8. Meanwhile, a cord 31, Fig. 4. fixed to the machine, causes a drum 30 to rotate and, by means of a feed screw 29, move a sliding member supporting a recording surface 17 longitudinally of the instrument. A stylus 9, Fig. 1, mounted on parallel steel strips 12a, 12b at one end of the lever 6, 8 co-operates with the recording surface 17. The fulcrum of the lever 6, 8 comprises a steel strip 2 stiffened by means of plates 3, each shaped as a double trapezium to allow the twisting of the strip 2 as the lever 6, 8 swings to and fro. The lever is biassed by a spring 21 which opposes the turning moment caused by the movement of the feeler 7 over the master member ; a second spring 24 urges the lever radially towards the master. As the feeler 7 leaves one valley in the master and passes over a crest, the lever 6, 8 is moved backwards against the tension of the spring 24 and a ramp 18 on the lever rides up on a cross-bar 19 and lifts the stylus 9 from the recording surface. The screw under test is fitted with a serrated disc (not shown) which serves to open momentarily the circuit of an electromagnet 40 at equal intervals in relation to the rotation of the screw. The released armature 39 is pulled away by a spring 42 and gives a slight kick to the recording surface 17 which is mounted on resilient steel strips 32a, 32b. Thus, as the saddle carrying the instrument moves along the machine tool, the stylus 9 scratches a series of arcs, each with a slight kick, on the recording surface 17. The kicks will lie on a straight line if the screw is accurate ; any departure from a straight line will be an indication of error.
Patent GB-1472491-A (GB)
Title: Purification of waste water
IPC: C02F1/00
Filed: 1975-05-16
Abstract: 1472491 Enzyme preparation of waste water MAX - PLANCK - GES ZUR FORDERUNG DER WISSENSCHAFTEN eV 16 May 1975 [17 May 1974] 20807/75 Heading C1C A process for purifying waste water comprises the addition of enzymes, which are obtained from bacteria contained in waste waters and/or enzyme preparations for detergents. The enzymes may be prepared by destruction of the cell walls of the micro-organisms. The waste water includes sewage and drainage water. Sources of nutrition, such as carbon (e.g. carbohydrates and/or amino acids) may be added to the water water, which may have additional oxygen added, e.g. by aeration.
Patent GB-153703-A (GB)
Title: Improvements to tables
IPC: A47B1/00
Filed: 1919-08-26
Abstract: 153,703. Molyneux, C. G. Aug. 26, 1919. Tables.-In order to accommodate the knees of sitters when two tables are arranged together, two of the legs a<2>, a<3> of a table are placed at some distance from the corners as shown in Fig. 3. To obtain the same result with a. folding table, the top is made in two parts c, c' hinged together, the narrower part c having fixed thereto legs d to which are hinged frames e', e<2> carrying legs e. Stops f, f<1> on the underside of the part c' of the top engage the frames so as to hold 'them at a distance from the corner as shown. Stops f<2> are provided to retain the legs when in the customary position at the corners.
Patent GB-1129216-A (GB)
Title: Process for the manufacture of vinyl chloride and 1:2-dichloroethane
IPC: C07C17/02
Filed: 1967-05-05
Abstract: 1,129,216. Vinyl chloride and 1,2-dichloroethane. SOLVAY ET CIE. 5 May, 1967 [20 May, 1966], No. 21023/67. Heading C2C. Vinyl chloride and 1,2-diohloro-ethane are prepared by a process which comprises heating in a reaction zone a gaseous mixture comprising acetylene, ethylene, hydrogen chloride, chlorine and inert gases, the latter being present in the proportion of at least 40% by volume of the mixture and the molar ratio of chlorine/ethylene being in the range 0À90 : 1 to 1À05 : 1, at a temperature in the range 100‹ to 180‹ C. in the presence of a catalyst based on metallic chlorides, the active metal element of the catalyst being less than 5% by weight of the catalyst, and recovering vinyl chloride and 1,2-dichloroethane from the exit gases from the reaction zone. The catalyst may be supported on silica, alumina or activated charcoal, silica being preferred. The use of superatmospheric pressure is preferred.