baber/WOPTO huggingface dataset:
Patent GB-1156440-A (GB)
Title: Nuclear Fuel Assembly
Inventor: FEUTREL CLAUDE
IPC: G21C3/33
Filed: 1968-06-14
Abstract: 1,156,440. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. 14 June, 1968 [5 July, 1967], No. 28472/68. Heading G6C. A nuclear fuel assembly comprises a plurality of canned fuel pencils maintained in parallel relation along the nodes of a lattice by means of a support grid to which one end of each fuel pencil is attached and by means of one or more braces which maintain the spacing of the fuel pencils along the assembly. The support grid comprises an annular member 24 and a series of rectilineal and parallel supporting beams 22 secured to the annular member and having an elongated transverse cross-section in the direction of coolant flow, each beam being made up of two strip components joined by means of spot welds 38. The strip components are so shaped as to form, when juxtaposed, collars for accommodating necked portions of the upper end-caps 18 of the fuel pencils. The fuel canning is stainless steel, a zirconium-base alloy or berryllium and the end-caps have a substantial vertical development. There is formed in a locking endring attached to the annular member 24 an annular recess which is intended to receive the jaws of a fuel-handling grab. Parallel slots in the form of castellated notches are formed in the walls of the annular member 24 and are equal in depth to the height of the beams 22. In the embodiment shown, the strip components are asymmetric. Thus the collars are not located at the nodes of a constant-mesh lattice but at the nodes of a pseudo-circular lattice. The fuel assembly may be located in a tubular sleeve of moderator material so as to constitute a cartridge which can be handled as a single unit.
Patent GB-758423-A (GB)
Title: Improvements in or relating to esterification of aromatic carboxylic acids
IPC: C07C69/80
Filed: 1954-10-04
Abstract: Aromatic carboxylic acid esters are continuously produced by passing in molten form, or as a solid slurried in an inert diluent, an aromatic carboxylic acid having the general formula: <FORM:0758423/IV(a)/1> where R is a carboxy group, a carboxy group esterified with an aliphatic alcohol of up to 10 carbon atoms or an alkyl group having no more than 4 carbon atoms and a vaporized substantially anhydrous aliphatic alcohol of up to 10 carbon atoms countercurrently through a column, the rate of input being sufficient to flood the column as indicated by a liquid reaction mixture containing dissolved alcohol together with water and acid overflowing the top thereof, said column being maintained under pressure of up to about 1000 p.s.i. and at a temperature sufficient to cause esterification, the temperature and pressure being interrelated so that the alcohol is maintained above its boiling-point while still retaining a portion of the alcohol vapour dissolved in the liquid phase.  The temperature may vary from about 180 DEG  to about 350 DEG C.  Specified aliphatic alcohols are the C1-C10 alcohols, the mono-methyl or -ethyl ethers of ethylene glycol and the monomethyl ether of propylene glycol. The aromatic acids used may contain further substituents such as halogen atoms or hydroxy groups.  As inert diluents used to form a slurry with the acid, aromatic carboxylic acids or esters thereof may be used.  This slurry of acid may be formed by adding some of the feed alcohol to the acid and heating prior to injection of the acid into the chamber, causing some esterification and giving a slurry of the acid in the ester.  In examples: (1) methanol and p-toluic acid in molar ratio of 3 : 1 are esterified in the apparatus described above at about 240 DEG  C. and 400 p.s.i.g; (2) similar to (1), using methanol and a mixture of iso- and terephthalic acids in a molar ratio of 6 : 1, the acids being used as a slurry in molten methyl toluate.
Patent GB-1261930-A (GB)
Title: Transmission belt and method of making same
IPC: F16G5/10
Filed: 1969-06-05
Abstract: 1,261,930. Making rings. DAYCO CORP. 5 June, 1969 [26 June, 1968], No. 28576/69. Heading B3A. [Also in Division F2] A metal ring having uniform corrugations parallel to its longitudinal axis, for use as the load-carrying element of a V-belt (see Division F2) may be formed by passing a sheet-metal strip between forming rolls while under tension and joining the ends by butt-welding or by overlapping the ends and welding, bonding, or riveting them together. Alternatively a jointless ring may be made by rolling an annular flat member 66 between rolls 71 to turn the major axis of the section through 90 degrees, or by reducing the thickness of a cylindrical thick ring (74) between rolls (77) (Figs. 6, 7, not shown), the resulting ring having corrugations formed between rolls 73, 74, Fig. 14.
Patent GB-627993-A (GB)
Title: Improvements in method of preparing liquid saturated chlorinated hydrocarbons
IPC: C07C17/275
Filed: 1946-09-25
Abstract: Liquid saturated chlorinated hydrocarbons of the formula CCl3(C2H4)nCl where n is an integer ranging from 1 to 4, are produced by reacting one part by weight of ethylene with at least 50 parts by weight of carbon tetrachloride in the presence of a per-oxygen compound as catalyst.  The reaction temperature may be from 20 DEG to 200 DEG  C. and at low reaction temperatures the pressure may vary from below atmospheric pressure to 100 pounds per square inch, while at higher reaction temperatures it may vary from atmospheric pressure to 400 pounds per square inch.  Specified per-oxygen compounds are benzoyl peroxide, acetyl peroxide, hydrogen peroxide, acetone peroxide, acetyl benzoyl peroxide, lanroyl peroxide, urea peroxide, diethyl peroxide, t-butyl hydroperoxide, perbenzoic acid, potassium persulphate, ammonium persulphate, and barium peroxide.  In examples: a closed vessel containing carbon tetrachloride, ethylene and benzoyl peroxide is heated at 70-80 DEG  C. (example 1) and at 70-75 DEG  C. (example 2) more ethylene gas being introduced to maintain the pressure at 100 pounds per square inch (example 1) or 25 pounds per square inch (example 2).  The products are separated by fractional distillation yielding tetrachloropropane, tetrachloropentane and higher boiling products. Tetrachloroheptane is also specified as a product of the reaction. U.S.A. Specification 2,334,195 is referred to.  Reference has been directed by the Comptroller to Specification 581,899.ALSO:Liquid saturated chlorinated hydrocarbons of the formula CCl3.(C2H4)n.Cl, where n is an integer ranging from 1 to 4, are produced by reacting one part by weight of ethylene with at least 50 parts by weight of carbon tetrachloride in the presence of a per-oxygen compound as catalyst.  The reaction temperature may be from 20 DEG  to 200 DEG  C. and at low reaction temperatures the pressure may vary from below atmospheric pressure to 100 pounds per square inch while at higher reaction temperatures it may vary from atmospheric pressure to 400 pounds per square inch.  Specified per-oxygen compounds are benzoyl peroxide, acetyl peroxide, hydrogen peroxide, acetone peroxide, acetyl benzoyl peroxide, lauroyl peroxide, urea peroxide, diethyl peroxide, t-butyl hydroperoxide, perbenzoic acid, potassium persulphate, ammonium persulphate, and barium peroxide.  In examples: a closed vessel containing carbon tetrachloride, ethylene and benzoyl peroxide is heated at 70-80 DEG C. (example 1), and at 70-75 DEG  C. (example 2), more ethylene gas being introduced to maintain the pressure at 100 pounds per square inch (example 1), or 25 pounds per square inch (example 2).  The products are separated by fractional distillation yielding tetrachloropropane, tetrachloropentane and higher boiling products. Tetrachloroheptane is also specified as a product of the reaction. U.S.A.  Specification 2,334,195 is referred to.  Reference has been directed by the Comptroller to Specification 581,899.
Patent GB-1526504-A (GB)
Title: Method and apparatus for the washing or treatment of photographic or other image producing film
IPC: G03D3/02
Filed: 1977-07-07
Abstract: 1526504 Photographic processing apparatus R A PAYNE and C E PLANT 7 July 1977 [9 July 1976] 28687/76 Heading G2X An apparatus for washing or treating a coil 17 of photographic or other image producing film comprises a tank 11 in which the coil can be inserted, the tank having a closed end-wall, a curved internal surface 12 and an inlet passage 13 for washing or treatment liquid which opens into the interior of the tank at or adjacent the closed end, the direction of the passage being such that liquid under pressure flows through the tank along a helical path and causes the coil of film to rotate. The length of the tank may be increased by one or more extension units so that more than one coil may be processed simultaneously.
Patent GB-1479451-A (GB)
Title: Meshing screw compressors
IPC: F04C18/16
Filed: 1973-06-18
Abstract: 1479451 Rotary positive-displacement fluidmachines SVENSKA ROTOR MASKINER AB 18 June 1974 [18 June 1973] 28742/73 Heading F1F In a method of operating a refrigerant compressor of the oil-injection meshing-screw type the kinematic viscosity of the injected oil is not less than the value given by the equation (in centistokes) at 50C, where p 1  is the discharge pressure in kp/cm<SP>2</SP>, u is the male-rotor tip-speed in m/sec, e is the natural logarithm base, and c is equal to the refrigerant being of the hydrocarbon or halocarbon compound type. This method is said to improve the performance at low rotor-speeds. Preferably, the capacitivity ratio of the oil and refrigerant is in accordance with the Formula:- (In#r gas -In#r oil ) # 1, where In means the natural logarithm.
Patent GB-432181-A (GB)
Title: Improvements in or relating to means for propulsion by reaction
IPC: B63H11/12
Filed: 1933-10-17
Abstract: 432,181. Jet propulsion. REY, J. A., 30, Rue de Versailles, Viroflay, Seine-et-Oise, France. Oct. 17, 1933, No. 28746. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 19, 1934]. Application for addition to 397,992. [Classes 4 and 114] [See also Group XXXI] In ejector devices for propelling by reaction such as described in the parent Specification in which the driving-fluid entrains a second fluid and the mixture serves as driving-fluid to entrain a third fluid, the mixture of the three fluids serving to create the driving purpose, the density of the intermediate fluid is so chosen that it lies between the densities of the first fluid and the final fluid entrained. For example, steam is employed to entrain air, and the mixture of air and steam is employed to entrain sea water.
Patent GB-718197-A (GB)
Title: Improvements in or relating to electric amplifying machines
IPC: H02K23/36
Filed: 1951-12-07
Abstract: 718,197. Exciting dynamo-electric machines. SIEMENS - SCHUCKERTWERKE AKT.-GES. Dec. 7, 1951 [Dec. 8, 1950; Jan. 31, 1951; Feb. 24, 19511, No. 28776/51. Class 35 A D.C. amplifying generator has two or more stages comprising separate armature windings of different pole numbers connected to separate commutators but influenced by the same stator poles which are excited by windings of the various pole numbers, the armature windings having the higher pole numbers being protected from circulating currents of the lower pole numbers by being either wave wound or else lap wound with adjacent brush pairs feeding separate load circuits. As shown in Fig. 3, the lap-wound two-pole winding 4 is connected to a commutator 5 engaged by brushes 6 feeding the four-pole exciting windings, while a four-pole output winding 3 is connected to a commutator 1 engaged by load brushes 2. The two armature windings may be placed in separate or common slots. The stator poles 7 carry two-pole separately excited windings 9 which pro-. duce a voltage between brushes 6 which in turn energizes four-pole exciting winding 8 to excite the main armature winding, commutating poles being used if necessary. If desired, an additional stage may be introduced by the use of short-circuited quadrature brushes 10, in which case a two-pole armature-reaction compensating winding 11 is placed in slots in the polefaces. The two commutators may be replaced by rectifiers connected to phase tappings on the two windings, and if desired dry rectifiers may be used which enable the armatures to be stationary while the poles rotate. Alternatively the tappings may be used to supply a single or polyphase alternating current. For use as an exciter, the machine may be made selfexciting by feeding the two-pole field windings 9 in parallel with the four-pole field windings 8 from the brushes 6. Alternatively both armature outputs may be connected in series to the four-pole field winding. The degree of self-excitation may be of such proportions that it is controlled by a very small separate excitation current. By the use of a controlling rheostat in series with the four-pole winding 8, the main output of the machine may be varied without affecting the output of the two-pole armature winding which may be tapped to provide a constant-voltage A.C. output. The voltage may be additionally stabilized by putting saturable shims under the poles. If desired the two- and four-pole fields may be excited separately so that the four-pole armature winding provides a D.C. output while the two-pole winding generates A.C. which may be rectified to feed the four-pole field windings. A machine is described having three stages comprising a four-pole commutated or rectified A.C. armature winding feeding a self-exciting winding and an eight-pole field winding, an eight-pole commutated armature winding feeding a sixteen-pole field winding, and a commutated sixteenpole armature supplying the output current.
Patent GB-1393008-A (GB)
Title: Constant tension orthodontic appliance
IPC: A61C7/06
Filed: 1972-06-20
Abstract: 1393008 Orthodontic Appliance J C MCVICKERS and, E A LEATHERMAN 20 June 1972 28830/72 Heading A5R An orthodontic appliance comprises a supporting harness 10, an instrument for applying a corrective tractive force to a selected portion of the dental facial frame of the patient, which instrument may be a face bow, J-hooks 14, or a chin cup 38, and means for exerting a constant force on the said instrument, said means being connected to said harness and said instrument .The means for exerting a constant tractive force on the instrument comprises a coil of spring steel or some other suitable material which permits the coil to exert a constant force through theoretically infinite deflection. This coil is mounted in a housing 16 and has a free end 17. As shown in Figure 4 the free end 17 of the coil is fixed to the housing 16 by passing the end through a hole 18 and bending the end back on itself 19. The coil itself is mounted in a slide member 21 which slides along the housing 16. The said instrument is attached to an operating rod or wire 23 which passes into the housing through a hole 22 and is attached to the slide member 21 through a hole 24. When the operating rod 23 is moved to the right or the left of Figure 4 the coil will unwind or wind up respectively but maintain the same tractive force on the operating rod. This allows relative movement between the said instrument and the supporting harness without affecting the force being applied to the selected part of the patient. Other means of attaching the coil to the housing and to the operating rod are illustrated in Figures 6 and 7 (not shown). The housing 16 is attached to the supporting harness 10 by sleeves 35 and tabs (36) (Figure 2 not shown).
Patent GB-1536389-A (GB)
Title: Process for isomerizing alkyl aromatic hydrocarbons
IPC: C07C15/00
Filed: 1977-07-08
Abstract: 1536389 Isomerizing alkylaromatic hydrocarbons COMPAGNIE FRANCAISE DE RAFFINAGE 8 July 1977 [21 July 1976] 28838/77 Addition to 1499248 Heading C5E Alkyl aromatic hydrocarbons are isomerized in at least two successive steps, the hydrocarbons being contacted in at least one of the steps with H 2  and a catalyst as claimed in Specification 1,464,931.
Patent GB-351843-A (GB)
Title: An improved travelling case or cabinet particularly adapted to be fitted in motor vehicles or aircraft for the use of passengers therein
IPC: A45C5/00
Filed: 1930-09-26
Abstract: 351,843. Travelling cases. FINCH, W., 51, High Road, Ilford, Essex. Sept. 26, 1930, No. 28854. [Class 52 (i).] A case for use in travelling, e.g. in cars or aircraft, consists of a partitioned cabinet with fall-down hinged door, and a hinged lid. The Figure shows a small cabinet with a door 2 fitted with a blotter 5. It is supported by quadrants 4 which slide over stop pins 23. The lid 3 normally slopes down from back to front in order to discharge rain &c. and contains a mirror 20. Partitions divide the body into compartments for various articles. The compartments 9 .. 15 may contain respectively lip salve, lip stick, and matches ; cigarettes ; pencils, a brush, a towel, a face-cloth and soap, and scent. The compartments 15, 16 are separated by a shallow partition 17, and may contain smelling-salts and a housewife. The large compartment 18 may contain maps and a first-aid outfit, and the compartment 19 may contain a flask and a comb. A low partition 21 is fitted at the base. On the back of the device is a flat hook, by means of which it may be suspended. Pressed-out parts 8 on the back hold it spaced from a vertical surface against which it may rest.
Patent GB-1010577-A (GB)
Title: Improvements in or relating to polycrystalline nickel-zinc ferrite bodies
IPC: C04B35/26
Filed: 1963-07-22
Abstract: 1,010,577. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 22, 1963 [July 25, 1962], No. 28918/63. Heading H1H. A nickel zinc ferrite body has a porosity of less than 3%, a mean pose size of less than 3 microns and a maximum pore size of 5 microns. A method of preparation comprises forming a mixture of oxides (or oxide yielding compounds) of nickel, zinc and iron, pulverizing (possibly after presintering) to a maximum mean particle size of 0.5 microns, drying the powder, aftertreating the powder in a propeller-mixing device to disintegrate any agglomerated particles compressing isostatically the powder at a pressure of at least 0.2 tons/cm.<SP>2</SP>, and then sintering the moulded body at a temperature of 1200- 1350 C. The term " isostatically " means the powder is compressed from all sides for example by immersing a rubber bag containing the powder in water. The body may contain 15-35 mol. per cent NiO; 15-35 mol. per cent ZnO and 49-50 mol. per cent Fe 2 O 3  and allowance may be made for iron introduced during grinding. A presintering at 900-1100 C. may take place before pulverizing. The powder may be pre-compressed to form a briquette before this is placed in a rubber bag to undergo the isostatical compression. Sintering may take place in an oxygen atmosphere. The invention is applicable to the formation of hard-wearing recording heads.
Patent GB-1109820-A (GB)
Title: Multiple level logic circuitry
Inventor: ALLEN FRIHOFF GRANT
IPC: H03K19/086
Filed: 1967-06-22
Abstract: 1,109,820. Transistor logic and bi-stable circuits. MOTOROLA Inc. 22 June, 1967 [15 Aug., 1966], No. 28925/67. Heading H3T. A bi-stable circuit 9 is controlled by at least two sets of transistors 35, 36, arranged substantially as shown, the current from the bi-stable circuit 9 being normally passed by a transistor 59 except when one or more of the sets 35, 36 is conductive, the common current through the circuit being passed by a further transistor 65. Each set of transistors 35, 36, 37 constitutes an AND gate whilst the three sets together provide an OR function. In Figs. 2, 3, 4 (not shown) one or more clocking transistors are connected between the common emitters of the transistors 55, 56, 57 and the constant current transistor 64.
Patent GB-306010-A (GB)
Title: Improvements in or relating to surface radiators for the cooling systems of internal combustion engines and for like purposes
IPC: F28F27/02
Filed: 1927-11-01
Abstract: 306,010. Ordidge, F. H. Nov. 1, 1927. Radiators, aircraft and like; cooling gases and liquids, tubular apparatus for. - Apparatus for cooling engine circulating water on aircraft, or for cooling oil or gas, comprise groups of tubes a, b, c connected in series, and a control valve n whereby the liquid &c. to be cooled may be circulated through one, two or more of the groups tc vary the cooling effect while maintaining a con stant-cross-section of the flow passage. The groups of tubes are substantially in one plane. The liquid &c. enters the hollow plug of the valve from a pipe o and is directed through one or other of the pipes h, j, k, m to the respective headers of the groups, of which intermediate headers e, f form both an outlet for one group and an inlet for the next. Small ports s, t, u may be provided in the valve to supply a small quantity of liquid to the groups cut off from the main supply. Specification 300,382 is referred to.
Patent GB-897535-A (GB)
Title: Improvements in or relating to double acting hydraulic rams
Inventor: HISTON ROBERT
IPC: F15B15/20
Filed: 1959-08-27
Abstract: 897,535. Hydraulic apparatus. WILD & CO. Ltd., A. G. Oct. 31, 1960 [Aug. 27, 1959], No. 29299/59. Class 69 (2). [Also in Group XXX] A double-acting hydraulic ram for moving a conveyer against a coal face comprises one pair of valves 14, 15 controlling the inlet and exhaust to and from one end of the cylinder, another pair of valves 141, 15<SP>1</SP> controlling the inlet and exhaust to and from the other end of the cylinder, and a control member consisting of a cam 16 movable into four operating positions in one of which the two exhaust valves 15, 151 are closed and the two inlet valves 14, 14<SP>1</SP> are opened to admit fluid pressure to both ends of the cylinder. The valves may be mounted on a block on one end of the cylinder or separate from the cylinder and are of the poppet type arranged to be opened by the cam 16 which is rotatable by means of a control handle. The cam has two surfaces 21, 22 one larger than the other and can be moved from a position F wherein the exhaust valves 15, 15<SP>1</SP> are open and the inlet valves 14, 14<SP>1</SP> are closed to positions P or P1 wherein the inlet valve of one pair and the exhaust valve of the other pair are open so that fluid is supplied to one end or the other of the cylinder to extend or retract the ram. When the cam is rotated through 180 degrees from the position F, both exhaust valves are closed and both inlet valves open so that the pressure differential acting across the piston because of the rod on one side thereof extends the rain with less force than when the ram is extended by the pressure acting on one side only of the piston. The cam may be replaced by another having surfaces of equal size permitting all the valves to be closed to hydraulically lock the ram. The ram may be placed in every third or fourth position against a conveyer adjacent a coal face and have both faces of the piston supplied with fluid pressure so as to act with the differential pressure thrust against the conveyer, the intermediate rams in the other positions being in a free or neutral condition.
Patent GB-707957-A (GB)
Title: Improvements relating to the connection of nuts on and displaced by lead screws to trolleys thereby displaced
IPC: B23K5/06
Filed: 1952-11-20
Abstract: 707,957. Welding by fusion. YATES, H. Nov. 20, 1952, No. 29328/52. Class 83 (4). [Also in Group XXIV] The work table m, Fig. 4, of a welding machine is tiltable about trunnions n by means of a lever l coupled by a strut k to a trolley d movable along inclined guides a by means of a hand operated screw e engaging a nut f universally coupled to the trolley (see Group XXIV). The table is rotatable through gearing m5, m<SP>4</SP>, m<SP>3</SP>, belt m<SP>2</SP> and motor m<SP>1</SP>. In Fig. 5 the welding head q' of a welding machine is carried on a boom q which is raised or lowered on columns p by means of a trolley d coupled thereto and running in vertical guides a and operated by a screw e driven through gearing v, u by a motor t. Limit switches t', t<SP>2</SP> are adapted to be operated by the trolley d at the limits of its travel. In both of the above arrangements safety nuts i are provided on the screw e to operate if the main nut f is stripped.