baber/WOPTO huggingface dataset:
Patent GB-653802-A (GB)
Title: Process for the production of perchlorethylene
IPC: C07C17/02
Filed: 1947-10-20
Abstract: Perchlorethylene is obtained by burning an intimate mixture of 1 volume of acetylene and 3 to 3.5 volumes of chlorine in the form of a flame in a combustion chamber, the speed of the gaseous mixture being so adjusted that a relatively slow increase in temperature from substantially 600 DEG  to 750 DEG  to 950 DEG  C. takes place within the combustion chamber measured in the direction from the entrance of the gaseous mixture into the combustion chamber to the tip of the flame remote from the entrance to said chamber.  To avoid the formation of by-products the speed of the gaseous mixture entering the combustion chamber should be as high as possible, preferably above 20 metres per second.  The flame is produced by ignition for example by a flame, spark or beam of light, and builds up at a short distance from the gas inlet nozzle.  It is desirable to avoid reflection of heat from the wall of the combustion chamber, e.g. by cooling the wall along its entire length or at the inlet part of the chamber.  The distance between the wall of the combustion chamber and the flame should also be large enough to maintain the flame stable. The first part of the reaction zone may be cooled for example by the evaporation of an inert liquid especially by atomizing thereinto a portion of the reaction products such as perchlorethylene and the atomization is preferably effected by means of the gaseous mixture coming out of the nozzle.  Part of the perchlorethylene produced is further chlorinated during the process to hexachlorethane and tetrachlormethane.  In an example, a mixture of acetylene and chlorine is blown at a speed of 100 metres per second through a nozzle into a tube, the outer wall of which is water cooled.  The mixture is ignited after entering the tube, e.g. by a spark or a beam of light.  The temperature rises from 600 DEG  to 750 DEG  C. at the beginning of the flame and to about 800 DEG  C. at the middle of the flame, the temperature at the tip of the flame being about 900 DEG C. Perchlorethylene is atomized into the nozzle of the tube by the current of the gas mixture and the gases are cooled immediately after combustion, the remaining uncondensed gases being contacted with water, e.g. in an absorption tower.  The reaction product is chiefly perchlorethylene.  Specification 496,352 is referred to.  The Specification as open to inspection under Sect. 91 includes two additional examples in which perchlorethylene is obtained (1) by the combustion of a mixture of chlorine with waste gases containing acetylene, nitrogen, carbon dioxide and hydrogen, the gaseous products being cooled in a gas refrigerator, and (2) by the combustion of a mixture of acetylene and a waste gas containing chlorine, hydrogen, carbon dioxide, nitrogen and oxygen, the gaseous products being then cooled to 0 DEG  C.  This subject-matter does not appear in the Specification as accepted.
Patent GB-793972-A (GB)
Title: Improvements in and relating to reach-fork stackers
Inventor: ROBINS GUY HERBERT
IPC: B66F9/10
Filed: 1955-10-03
Abstract: 793,972. Lift trucks. LIFTING GEAR SERVICES, Ltd. Oct. 2, 1956 [Oct. 3, 1955], No. 28058/55. Class 78 (3). In a fork lift truck the mast 6, together with the fork 5 and its lifting mechanism, is movable longitudinally of the truck chassis by a mechanism comprising, on each side of the truck, a ram 7 pivoted at 7a to the chassis and at 7b to a lever 8 which is also pivoted to the chassis at 8b and engages a vertical guide 10 on the mast through a roller 9. According to a modification (not shown) the mast is moved by a lazy tong mechanism. The lower end of the mast is mounted on a four-wheeled carriage (not shown) movable in channels 1a which form the chassis.
Patent GB-826218-A (GB)
Title: Improvements relating to the manufacture of spot welded sieve bottoms
Inventor: LEMOUCHE MARIE JOSEPHINE
IPC: B07B1/46
Filed: 1957-09-06
Abstract: 826,218. Making sieves; welding by pressure. TEMA N.V. Sept. 6, 1957, No. 28256/57. Addition to 663,182. Classes 83 (2) and 83 (4). [Also in Group II] In the method of manufacturing spot-welded sieve bottoms claimed in the parent Specification the sifting wires are bent or corrugated or stepped between the adjacent spacing wires or supporting bars in the plane of the bottom or at right-angles thereto. The sifting wires 1 may be shaped in the plane of the screen into zig-zags, Fig. 1, shallow corrugations, irregular steps 6, Fig. 3, or regular corrugations to provide substantially round meshes. The support wires 9, Fig. 6, may also be corrugated. The sifting wires 12 may be corrugated in the plane normal to the sieve bottom to the form shown in Fig. 8.
Patent GB-929914-A (GB)
Title: Improvements in or relating to industrial process control systems
IPC: A24C5/34
Filed: 1961-08-03
Abstract: 929,914. Automatic tobacco control. INDUSTRIAL NUCLEONICS CORPORATION. Aug. 3, 1961 [Aug. 15, 1960], No. 28319/61. Class 38 (4). In an arrangement for producing a uniform stream of material 18, such as tobacco for a cigarette rod 26, in which the excess is removed from a total stream by a retroactively controlled knife 16, the density of the total stream is controlled in accordance with the position of the knife so as always to maintain the knife within its working range. For example, if the mass of the product, measured by a radiation device 40, is such that the knife tends towards its maximum depth of cut, the density is decreased so that a lower final mass is achieved without excessive removal by the knife. The density control is shown applied to the automatic tobacco control system described in Specification 924,445. The tobacco is picked up by suction on a hollow disc 14 ; the amount of suction controls the density of the tobacco reaching the knife 16 and the suction is controlled by a device 68 in accordance with either the position of a potentiometer 72 on the knife control cam shaft, or the output of the radiation device 40. The invention is also described in relation to a general, unspecified material (Fig. 1, not shown). Specifications 887,267, 887,268, 887,271 and U.S.A. Specification 2,895,888 also are referred to.
Patent GB-387971-A (GB)
Title: Improvements in and relating to the manufacture of electrical heating wires
IPC: C22C38/06
Filed: 1932-10-11
Abstract: Electric heating wires having high resistance and high temperature coefficient of resistance are made from steels containing about 1,8-5 per cent of chromium and about 7,5-12 per cent of aluminium, with or without up to a total of 2 per cent of other elements such as silicon, titanium, beryllium, manganese, nickel, cobalt, tungsten, and molybdenum.
Patent GB-603659-A (GB)
Title: Power-lift attachment for tractors
IPC: A01D87/00
Filed: 1945-10-26
Abstract: 603,659. Scoop shovels. OTTAWA STEEL PRODUCTS, Inc. Oct. 26, 1945, No. 28369. Convention date, March 17. [Class 68 (i)] [Also in Group XXX] A power-operated lifting attachment is fitted to a tractor and comprises frame plates 8 rigidly bolted to the chassis 7 and extending from the front to the rear axle housing. At the centre of the plates 8 are mounted rigid posts 14 braced by struts 18 and connected together at the upper ends by a member 16, the ends of which form trunnions 20 for arms 22. Pivotally connected to the outer ends of the arms 22 and also to the centre of the plates 8 are hydraulic jacks 36, which under the driver's control raise or lower a shovel 30, which is pivotally supported in a yoke 26 at the outer ends of the arms 22. The shovel is held in a loading position by spring-tensioned latches 66 carried in brackets 60, the latches 66 engaging keepers 69 on the shovel 30. The latches are released by pulling on a cord 80, the load causing the shovel to rotate until the latches re-engage further stops at the rear of the bucket. After emptying, a spring 84 restores the shovel to the loading position when the latches are disengaged. Specification 559,308, [Group XXX], is referred to.
Patent GB-992776-A (GB)
Title: Procedure for the manufacture of a glass measuring scale
IPC: G01B3/04
Filed: 1963-07-18
Abstract: 992, 776. Indicating-apparatus; measuring- scales. M. HENSOLDT UND SOHNE OPTISCHE WERKE A.G. July 18, 1963 [Aug. 4, 1962], No. 28388/63. Headings G1J and G1M. A glass scale Fig 1, for precise measurement is made by applying scale strokes 2 in a plane 3 containing the centre of gravity of the glass 1 and covering the strokes by a glass plate 11. This avoids any errors due to bending of the glass 1 during marking. To avoid introducing errors due to bending during reading the parts 8, 9 of the glass 1 are removed to lift the centre of gravity of the glass 1 into the plane 10 containing the images of the scale strokes which are apparently displaced due to diffraction when viewed in the direction 6 by light from the direction 5. The plate 11 is softly cemented to the glass 1 and its thickness is chosen so that it will be flush with the glass 1 after removal of parts 8, 9. In the embodiment of Fig. 2, the cover plate 27 is rididly cemented to the scale body 21 and has the effect of displacing the centre of gravity from the plane 24 in which the strokes 22 were applied to the plane 29 in which they appear when viewed from direction 26 by light from direction 25, the displacement required to effect this result being obtained by the correct selection of the cross-section of plate 27. Three other embodiments minimizing errors due to bending are also described.
Patent GB-485555-A (GB)
Title: Improvements in and relating to closet pans
IPC: E03D9/03
Filed: 1936-10-19
Abstract: 485,555. Sanitary closets. HENDERSON, J. Oct. 19, 1936, No. 28396. [Class 26] A device for disinfecting &c. a closet comprises a container for the disinfectant &c. to be secured by a clip D on the rim of the pan and having perforations on the top to admit the flushing water at each flush to the disinfectant &c. and a weeping-hole H at the side to permit the disinfectant to pass into the pan. According to the Provisional Specification, the container may be formed integrally with the pan.
Patent GB-1490058-A (GB)
Title: Bearings for slant axis rotary mechanisms
IPC: F01C21/02
Filed: 1976-07-08
Abstract: 1490058 Bearings CATERPILLAR TRACTOR CO 8 July 1976 [5 Nov 1975] 28441/76 Heading F2A [Also in Division F1] A slant axis rotary fluid machine, e.g. a pump, engine or compressor comprises a housing defining a chamber including an operating cavity, a shaft 22 journalled in the housing and including an angularly offset portion 24 within the chamber, the angularly offset portion including a peripheral, generally radially outwardly extending thrust collar 26<SP>1</SP>, a rotor mounted on the offset portion by thrust bearings 28 sandwiched between the collar and the rotor and a journal bearing disposed between the radially outer portion of the thrust collar and the rotor, the journal bearing having a part-spherical outer surface. The journal bearing is preferably a self-aligning bearing.
Patent GB-1198664-A (GB)
Title: Surgical Stapling Devices.
IPC: A61B17/072
Filed: 1967-10-06
Abstract: 1,198,664. Surgical staplers. UNITED STATES SURGICAL CORP. 6 Oct., 1967 [10 Oct., 1966], No. 28463/69. Divided out of 1,198,663. Heading A5R. [Also in Division B4] The subject-matter of this specification forms part of that described in the Specification 1,198,663 but the claims are concerned with a surgical stapling device having a generally U-shaped jaw and a tie member (116) inter-connecting the upper ends of the jaw.
Patent GB-706057-A (GB)
Title: Grinding device
IPC: B24B5/35
Filed: 1951-12-05
Abstract: 706,057. Grinding cylindrical surfaces. WURTT SPINDELFABRIK GES. Dec. 5, 1951 [Dec. 6, 1950], No. 28487/51. Class 60 A spinning-frame roller 2, Fig. 1. is ground by supporting it on a driving roller 1 with its axle 6 rotatably mounted in one end of a bracket 5 the other end of which is rotatable about a joint 4, such as a ball-joint. The bracket is loaded by a weight 15 on a spring and is provided with two semi-cylindrical portions 8, Fig. 2, to receive the opposite ends of the axle. The grinding wheel 3 may be reciprocated axially and the rollers 1 and 2 advanced towards it by a hydraulic device. In a second embodiment, Fig. 7, the bracket is adjustably clamped in a sleeve 616 supported by a ball-joint 4 which can be traversed along a screw 613 by rotation of a hand crank 610 to advance the work. If a deep cut is to be taken both the grinding wheel and work may be advanced. Two further embodiments are described in which, as in Fig. 7, the grinding wheel is arranged between the ball-joint and the work. One of these embodiments employs two grinding wheels for simultaneous treatment of two pairs of rollers, each pair being joined by a single axle supported in a separate bracket. Preferably the centre of the joint 4 and the axes of the grinding wheel and work lie in a common plane.
Patent GB-360579-A (GB)
Title: Improvements in or relating to fireplace surrounds and the like
IPC: F24B1/198
Filed: 1930-09-23
Abstract: 360,579. Ornamental bricks. BERRY, A. F., Wellington House, Strand, London. Sept. 23, 1930, No. 28488. [Class 87 (i).] A fireplace surround is built wholly or partly of bricks of standard size having grooves so formed in their exposed faces that, when the grooves are filled with mortar, plaster, or the like, an appearance of bricks of less length or width than the standard is presented. Figs. 1, 3, and 5 show bricks having variously arranged transverse grooves b, whilst Fig. 7 shows a brick with a longitudinal groove b<1> giving the effect of the edges of two tiles. The faces of some of the bricks may be ornamented with scored lines, for example as shown at a* in Fig. 9. The bricks may contain pieces of black, white, or coloured material which are exposed by the scoring. Specifications 338,162, [Class 87 (i), Bricks &c.], is referred to.
Patent GB-285157-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F1/16
Filed: 1926-11-12
Abstract: 285,157. Igranic Electric Co., Ltd., and Willans, P. W. Nov. 12, 1926. Addition to 257,708. Thermionic heterodyne receivers.-Coupling between two oscillating circuits associated with , the grid-filament circuit of a valve v is eliminated by using two tuned transformers 1a, 1b, 2ab, one of which may be an autotransformer 2ab, with their primaries in series between the grid and filament and an impedance 10 connected between the grid and filament of the valve or between the grid and an auxiliary coil 8 coupled to the transformer nearer the filament. The secondary 1<b> of the transformer nearer the grid is connected between the grid and filament of an oscillating valve vO in the plate circuit of which is a, coil 6 coupled to the secondary winding. The auxiliary coil 8 and autotransformer 2ab are connected at one end directly or through a battery or large condenser: and at the other end through a variable tuning condenser 4.
Patent GB-861058-A (GB)
Title: Valve for controlling a fluid flow
IPC: F16K11/056
Filed: 1957-09-12
Abstract: 861,058. Valves. SWAIN, F. E., and WISEMAN & SONS Ltd., D. F. Aug. 19, 1958 [Sept. 12, 1957], No. 28744/57. Class 135. A three-way valve comprises a spherical closure member 15 in a part-spherical casing and carried by a lever 16 having a pivot 18 at one end and engaged at the other end by an actuator 24 by which the member 18 may be engaged with either of two outlet seatings 30. As shown, the actuator is formed with pistons 26 working in a cylinder 25 in communication with the controlled fluid, the pistons being furnished with orifices 29 enabling them to function as dashpots. The valve seatings may incorporate resilient washers 31, or the member 15 may be made of resilient material, and this member may be in one piece or in two separate portions clamped to lever 16. According to the Provisional Specification the valve-actuating mechanism may be of the cam or screwedspindle type.
Patent GB-1428933-A (GB)
Title: 5-phenyl-sulphinyl-2-benzimidazolyl-carbamic acid esters and process for their manufacture
IPC: C07D235/32
Filed: 1974-06-28
Abstract: 1428933 5 - Phenylsulphinyl - 2 - benzimidazolylcarbamic acid esters HOECHST AG 28 June 1974 [7 July 1973] 28793/74 Heading C2C Novel compounds of Formula I: wherein R is C 1-4  alkyl, R<SP>1</SP> is H, Cl, Br, C 1-4  alkyl or CH 3 O, and R<SP>2</SP> is H, Cl, Br or CH 3 , are prepared by oxidation of a compound of Formula II Pharmaceutical compositions in conventional forms for oral administration having anthelmintic activity comprise an above novel compound and a carrier therefor.
Patent GB-735339-A (GB)
Title: Improvements in or relating to power steering mechanisms for motor vehicles
IPC: B62D5/12
Filed: 1953-10-19
Abstract: 735,339. Fluid-pressure servomotor-control systems. FORD MOTOR CO., Ltd. Oct. 19, 1953 [Oct. 17, 1952], No. 28820/53. Class 135. In a power-assisted steering-mechanism for motor vehicles and including a pump 36, Fig. 1, connected through a control valve 41 with a hydraulic power device 31, the piston-rod 63, Fig. 3, of the device is pivoted to a fixed member 12 of the vehicle frame, while the cylinder 51 is pivoted to the usual steering linkage and disposed in a protective jacket 52, the space between which and the cylinder forms a conduit for the flow of pressure-liquid to and from the left end of the cylinder. The spring-centralized power piston 72 has limited sliding movement on the rod 63 between stopmembers 68, 71 and is formed with grooves 82, 83 connected by ducts 84, 86 with the opposite sides of the piston and, in the mid-position of the piston, with a groove 81 in the rod. This construction permits of manual operation of the steering mechanism by allowing free flow of liquid between the opposite ends of the cylinder. In making a left turn of the vehicle, the control valve, which may be saturated in response to movement between the end of the link 21 and the drag-link 24 under steering load, and movement or torsion of the steering column shaft, or by a pair of gears associated with the column, directs pressure liquid through the pipe 44 to the right end of the power cylinder. This results first in the displacement of the piston till it abuts the stop-member 71 and then in rightward movement of the cylinder which, through the steering linkage, turns, the wheels to the left.
Patent GB-946999-A (GB)
Title: The prevention and removal of crude maleic acid deposits
IPC: C07C51/56
Filed: 1961-08-10
Abstract: The invention comprises a method of preventing the formation of adhering, solid deposits on a steel surface in contact with a crude maleic anhydride product super-saturated with crude maleic acid containing fumaric acid, resins and tars, by maintaining the steel surface at at least 185 DEG C. and a means for removing a solid crude maleic acid deposit from a steel surface by heating the deposit to at least 185 DEG C. and dispersing it in water maintained at about 100 DEG C. and removing the resultant aqueous dispersion. The crude maleic anhydride product may be obtained by the dehydration by azeotropic distillation with e.g. xylene, of an aqueous maleic acid solution formed by the absorbtion in water of the product of the catalytic partial oxidation of benzene from which some maleic anhydride has been removed by condensation.  The deposit may be heated while submerged in a liquid which is preferably maleic anhydride.  The preferred temperature is from 185 to 200 DEG C. Examples are provided. Specification 853,849 is referred to.
Patent GB-290007-A (GB)
Abstract: 290,007. Dicker, S. G. S., (jVoatMboxa Vennootschap Philips' Gloeilampenfabrieken). March 21, 1927. Leading-in wires.-In electric discharge tubes with one current lead hermetically led in by a metallic member sealed at its edge to the glass of the tube, the member consists of iron or an iron alloy adjacent the seal and elsewhere of material having small hysteresis loss, and preferably high thermal conductivity, to reduce heating of the member bv the field of high-frequency currents in the lead. A hollow copper lead 8 with a, head 9 supporting the grid of a transmission valve is sealed to the glass 1 bv a ferrochrome bushing 3 on a copper ring 10. A copper tube 11, apertures 12 and an iron sheath 15 secured to the glass 1 and lead 8 by rubber sleeves 16, 17 are provided for the circulation of a fluid cooling the seal. The part 10 may be formed so that, or may carry conducting parts of small hysteresis loss so that, the part 3 is screened from the field of the current in the lead. The part 10, as applied to a solid copper lead, may carry copper screens surrounding the lead.
Patent GB-488816-A (GB)
Title: Improvements in or relating to the separation of liquid mixtures
IPC: C07C45/82
Filed: 1937-10-25
Abstract: <PICT:0488816/III/1> The ternary constant-boiling mixtures composed of acetone, an alcohol such as ethyl or methyl alcohol, and an aldehyde or cyclic ether (as defined below) are separated into their components by adding water to the mixture and separating the acetone and the aldehyde or cyclic ether together from the water and alcohol by distillation.  In place of water an aqueous solution of sodium or potassium carbonate or thiosulphate or dilute acetic acid may be used.  The acetone is preferably recovered by adding a hydrocarbon such as pentane, butane or hexane, which forms an azeotropic mixture with acetone and separating the hydrocarbon and acetone from the aldehyde or cyclic ether by distillation.  The term "aldehydes and cyclic ethers" is here used to mean cyclic ethers, including olefine oxides, e.g. ethylene oxide, isobutylene oxide, tetramethylene oxide and homologues and isomers of these, aldehydes, and polymerization products produced from these compounds alone or in admixture with each other and/or with alcohols.  In the example a mixture of acetone, methyl alcohol and tetramethylene oxide is fed to a column 1 through a pipe 15 about 1/3 of the way up the column.  Water is supplied by a pipe 16 about 2/3 of the way up.  The kettle 4 is maintained at 64 DEG  C., the column 1 at 55 DEG  C. and the primary condenser 7 at 33 DEG  C.  The temperatures of the kettle and column are both below the boiling points of water and methyl alcohol but above the boiling point of the azeotropic mixture of acetone and tetramethylene oxide, so that water and methyl alcohol collect in the kettle for withdrawal.  The vapour mixture of acetone and tetramethylene oxide, freed from water and alcohol by the primary condenser 7, is condensed in the secondary condenser 10 and fed in liquid form into a second column 2, to which pentane is fed from a tank 17. The kettle 5 is kept at 57 DEG  C., the column 2 at 33 DEG C. and the primary condenser 8 at 29 DEG  C. so that tetramethylene oxide accumulates in the kettle, while the azeotropic mixture of acetone and pentane, boiling at 33 DEG  C., passes through the column and primary condenser to the secondary condenser 11, from which it passes in liquid form with water from a pipe 18 to a mixer 13 and decanter 14 in which there separates an upper layer of pentane and a lower one of acetone and water.  The pentane is returned to column 2, while the lower layer is introduced into the third column 3.  The kettle 6 is kept at 64 DEG  C., the column 3 at 55 DEG  C. and the condenser 9 at 33 DEG  C., so that acetone is condensed in the secondary condenser 9, while water is withdrawn from the kettle 6.