baber/WOPTO huggingface dataset:
Patent GB-766498-A (GB)
Title: A process for the production of methyl-substituted aromatic compounds
IPC: C07C37/52
Filed: 1954-12-20
Abstract: Methyl substituted aromatic compounds are made by contacting a diaryl methane compound in the presence of hydrogen with a catalyst of high melting point having hydrogenating activity.  The catalyst may be a compound of a metal of Groups VI-VIII of the periodic classification having atomic number of at least 24, e.g. one or more of the sulphides of chromium, molybdenum, tungsten, manganese, iron, cobalt or nickel, or may be activated carbon. The reaction is carried out at 400-450 DEG  C. under a pressure of 250-275 lb./sq. in. Examples are concerned with preparing (i) p-, o- and m-xylenes by hydrocracking ditolylmethane or the product obtained by alkylating toluene with formaldehyde; (ii) durene, with small quantities of isodurene and prehnitene by hydrocracking recrystallized bis-(2,4,5-trimethylphenyl) methane obtained by alkylating pseudocumene with formaldehyde; (iii) pentamethylbenzene (m.p. 53 DEG C.) by hydrocracking bis - (2,3,4,6 - tetramethylphenyl) methane obtained by alkylating with formaldehyde a mixture of isodurene, prehnitene and unseparated durene obtained by the procedure (ii); (iv) a 2,6- and 2,7-dimethylnaphthalene mixture by hydrocracking a mixture of bis-(6-methylnaphth-2-yl), bis-(7-methylnaphth-2-yl) and 6,71 - dimethyl - dinaphth - 2 - yl methanes obtained by alkylating b -methylnaphthalene with formaldehyde; (v) toluene by hydrocracking diphenylmethane.  Other groups which may be present in the diaryl methane starting material should be non-reactive under the conditions of the process for severance of one of the aryl groups from the methylene carbon bonded to the two aryl groups.  Examples of other diarylmethane compounds which may be used as starting materials and which may be prepared by alkylation of the corresponding aryl compounds with formaldehyde are: di-b -5,6,7,8-tetrahydronaphthylmethane from tetrahydronaphthaline, p-p1-dichlorodiphenylmethane from chlorobenzene, p - p1 - diaminodiphenylmethane from aniline, N,N,N1,N1-tetramethyl-p, p1-diaminodiphenylmethane from dimethylaniline, bis-(o-methoxyphenyl) methane and bis-(p-methoxyphenyl) methane from methylphenyl ether, bis-(2,4-dimethylphenyl) methane from m-xylene, dib -naphthylmethane from naphthalene, and bis(2 - hydroxy - 3,5 - dimethylphenyl) methane from 2,4-dimethylphenol.
Patent GB-1096142-A (GB)
Title: Improvements in or relating to photographic colour printing
Inventor: OWEN DAVID MALCOLM
IPC: G03F3/06
Filed: 1963-09-24
Abstract: 1,096,142. Photographic colour printing. PAPERS & PUBLICATIONS (PRINTERS) Ltd. Sept. 23, 1964 [Sept. 23, 1963], No.37304/63. Headings G2A and G2C. In the production of half tone colour separation negatives or positives for colour printing from a colour transparency, the transparency is placed in a holder forming part of a lighting apparatus which further comprises a plurality of individual similar light sources successively connected one at a time to a source of electric current, the light from the light source which, for the time being, is energized, being directed towards the holder and each light source being energized for a portion of a predetermined time exposure of photographic sensitive material. The half tone colour separation negative or positive is produced by placing a colour mask in the optical path between the operative light source and the transparency, positioning a colour filter between the transparency and an optical system, positioning a screen for producing half tone images on the side of the optical system remote from the filter, placing the photographic material at the side of screen remote from the optical system, and then effecting a predetermined time exposure of the material. The lighting arrangement is used to produce the colour mask. The light sources e.g. incandescent lamps, gas discharge tubes, may be arranged in separate light boxes which are rotatable about a common axis by a step-by-step drive mechanism, or are rotatable continuously, means being provided to keep the light beam from an energized source stationary, or the light sources may be stationary and movable light deflecting means provided. A heat filter may be provided.
Patent GB-822487-A (GB)
Title: Improvements in and relating to machines for preparing and treating a mixture of fibrous material in suspension
Inventor: COLLIVA DANTE
IPC: B28B1/52
Filed: 1955-12-30
Abstract: 822,487. Raising and lowering moulding elements e. g. rollers. ETERNIT S.p.A. Dec. 30, 1955, No. 37398/55. Class 87(2). Relates to machines operating on a mixture of fibrous material in suspension, e.g. for making asbestos-cement pipes, in which rollers, for example, are raised and lowered and comprises two pistons 4 with hydraulic cylinders 5, racks 6, parallel to the piston-rods, mounted on guides A on which the collars are mounted and which are connected to the piston-rods below the cylinders, and a shaft 8. with pinions 7 meshing with the racks whereby the guides A are raised and lowered in synchronism.
Patent GB-346382-A (GB)
Title: Improvements in electrical insulating materials
IPC: C08K5/01
Filed: 1929-12-06
Abstract: Electrical insulating material comprises wholly or partly deresinated guttapercha and/or balata with which is mixed as a softener, a semi-solid refined petroleum product such as petroleum jelly.  The gutta &c. employed is that having electrical properties described in Specification 307,390, [Class 70, Indiarubber &c.].  The combined resin and petroleum product content should not exceed 50 per cent of the whole.  Natural or synthetic rubber may also be added; this may be purified, e.g. as in Specification 320,370 and 329,275, [both in Class 70, Indiarubber &c.].  In mixtures containing more than 15 per cent of petroleum jelly, tendency to "sweat" is prevented by a heat treatment as in Specification 326,481, [Class 70, Indiarubber &c.]. Several examples are given of mixes of various proportions with their electrical characteristics.  Specifications 329,981 and 335,966, [both in Class 70, Indiarubber &c.], also are referred to.
Patent GB-1294419-A (GB)
Title: Fastener
Inventor: SWINDT JOSEPH K
IPC: F16B37/14
Filed: 1971-08-10
Abstract: 1294419 Riveting VSI CORP 10 Aug 1971 [10 Aug 1970] 37559/71 Heading B3U [Also in Division F2] A fastener comprises a first member 11 (Figs. 1A, 1C) having a head 13 and a sleeve 15 extending therefrom, with a shank 17, having an annular groove 29, extending from the head 13 through and beyond the sleeve 15, and a second member 31 having a head 33 and a deformable sleeve 37 extending therefrom, the second member 31 being placed on the shank 17 so that the sleeves 15, 37 extend towards each other. When the sleeves are forced together with the fastener in a hole in a workpiece, part of the sleeve 37 of the second member 31 is deformed radially inwardly by the sleeve 15 of the first member to engage in the groove 29 of the shank 17 to lock the two members together. In Figs. 1A, 1C, the shank 17 is part of a bolt the head 19 of which is rotatably retained in the head 13 of the first member 11. On installation the second member 31 is held against rotation by a tool (not shown) and the bolt is rotated by its shank end 25 to draw the members 11, 31 towards each other. The chamfered leading end 41 of second member 31 is forced into the sleeve 15 of the first member so that the end 41 is deformed into the groove 29 of the shank and the leading end of the sleeve 15 is deformed radially outwardly to engage the wall of the hole. At a predetermined torque, the end 25 of the shank breaks off flush with the second member head 33 to prevent excessive clamping action. In a modification (Figs. 2A-2C, not shown) the sleeve of the first member is thick enough to resist outward deformation, and is of the same outside diameter as the base portion of the second member sleeve. In Fig. 3 (not shown), the sleeve of the first member is a separate member force-fitted on to the shank of a bolt, the bolt head forming the complete head of the first member. In Fig. 4, a sleeve 103 is secured over the shank of a threadless bolt 101. The second member 107 is forced into the hole while pulling the bolt 101 by its tip, so that the leading portion of the second member sleeve 111 is deformed into the annular groove 105 of the bolt by the sleeve 103. The bolt tip snaps off at 113 after installation. Fig. 5 shows a blind fastener in which the end of a sleeve 125 is deformed outwardly at 135 after insertion of the fastener through a hole, to form the head of the first member. The sleeve 125 is initially in one piece, waisted at 131, to form the sleeves of both members. After the end portion 135 has been deformed, pressure on the head 129 of the sleeve fractures the sleeve at 131, the upper portion being forced into the annular groove 137 of the bolt by the lower half.
Patent GB-890409-A (GB)
Title: Apparatus for annealing coils of strip metal
IPC: C21D9/663
Filed: 1958-11-22
Abstract: 890,409. Annealing coils. WILSON, L. Nov. 24, 1958 [Dec. 19, 1957], No. 37707/58. Class 72. [Also in Group XII] A coil support for supporting open coils during treatment comprises a plurality of radially extending web members having coil engaging portions to support a coil by engagement at spaced apart areas with the bottom thereof, and a baffle wall disposed below the coil engaging portions and having one periphery adjacent the coil engaging portions and the other spaced vertically and offset radially from said one periphery. As shown, coil spacer S comprises radially extending vertical web members 26 with top and bottom bearing strips 27 and 28 and inner and outer reinforcing rings 29 and 30. Bars 31 and struts 33 are used to stiffen the structure. Radial troughs 34 are provided for the lifting means described in Specification 878,498, a portion 35 of baffle wall 32 being extended horizontally to form the bottom of a trough the sides of which are formed by adjacent webs 26. Removable sliding closure plates 37 close the ends of troughs 34 during annealing which is carried out by the circulation of the furnace atmosphere as shown by the arrows and described in Specification 878,497. The conical baffle may be replaced by a stepped wall (Fig. 9 not shown) and it may be made to slope from the inner periphery of coil C<SP>1</SP> down to the outer periphery of coil C. Spiral radial webs may replace the flat ones 26 (Fig. 5 not shown).
Patent GB-362676-A (GB)
Title: Improvements in or relating to machines for milling and fulling woven woollen textile or other materials
IPC: D06C17/00
Filed: 1930-12-15
Abstract: 362,676. Fulling hats. SAVAGE, R. K., 13, Cardinal Mount, and PADGETT, A., 15, Cardinal Mount, Beeston, Leeds. Dec. 15, 1930, No. 37710. [Class 63.] The stock feet 1 of a machine for fulling felt for hats &c. are lifted by bars 40, 41 carried by endless travelling chains 31. The bars 40, 41 engage spring buffers 56 on the feet, and when the machine has two feet the bars 40 connected to the middle and one s de chain alternate with the bars 41 connected to the middle and the other side chain. Spring catches 56 for holding up the feet are provided.
Patent GB-990118-A (GB)
Title: Improvements in or relating to portland cement
IPC: C04B7/42
Filed: 1961-10-20
Abstract: A high early strength Portland cement is obtained by intimately mixing the raw material with finely divided calcium hydrosilicate and/or hydro-aluminate.  The calcium hydrosilicate or hydro-aluminate may be in an amount of 1 to 60% by weight of the raw material.  A sulphide, or a compound which, during burning, yields a sulphide, may also be added.  Pre-set Portland cement can be used as a source of calcium hydrosilicate and/or hydro-aluminate. In an example, 100 kg. dry, raw material such as is used for burning to give so-called early strength Portland cement is mixed in a tube mill with 25 kg. ground pre-set Portland cement, and 10 kg. coal are added.  The mixture is burnt.  The clinker is then milled with 6% gypsum.  Concrete blocks are prepared from 1 part of this cement, 2 parts of sand, 4 parts of aggregate and a water/cement factor of 0.6.
Patent GB-898268-A (GB)
Title: Improvements relating to big-ends for connecting rods
IPC: F16C9/04
Filed: 1960-11-03
Abstract: 898,268. Connecting-rods. DAIMLERBENZ A.G. Nov. 3, 1960 [Nov. 6, 1959], No. 37850/60. Class 122 (1). A connecting-rod big-end is divided transversely of the rod 1 into parts 2, 3, 4 connected by two pairs of studs 9, the studs of each pair forming with each other an acute angle open towards the cap part 2, the parts being provided with part-circular surfaces 10, 11 and 12, 13 and arranged so that, in the direction in which the distance between the studs decreases, one part embraces the next by means of its partcircular surfaces. The part 17 acts as a journal for a second connecting rod.
Patent GB-523285-A (GB)
Title: Improvements in and relating to conveyor roller trains
IPC: B21B39/00
Filed: 1938-12-30
Abstract: 523,285. Roller-way conveyers. SCHLOEMANN AKT.-GES. Dec. 30, 1938, No. 37937. Convention date, Jan. 25. [Class 78 (i)] An electrically driven roller 1 for a roller-way conveyer is carried by a stationary shaft 2, and the driving motor 10 is set at an angle to the roller, the drive being transmitted through bevel gears 12, 16 and, optionally, a resilient coupling 11. The motor is flanged to a casing 9 provided on a supporting block 4 for one end of the shaft 2. The roller 1 is mounted on the shaft 2 by hubs 5 and 6, and the bevel gear 16 is carried by the hub 5 or is formed integral therewith.
Patent GB-1137155-A (GB)
Title: Moulding sand blow plate assembly
IPC: B22C15/24
Filed: 1966-08-24
Abstract: 1,137,155. Moulding machines. AUTOMOTIVE PATTERN CO. 24 Aug., 1966 [16 March, 1966], No. 38044/66. Heading B3F. A blow plate assembly for feeding moulding sand into a heated core box 18 comprises plates 12, 14, which may form the bottom of a moulding sand container, clamped together and shaped to form between their adjoining faces chambers 36 (34), (Fig. 1, not shown), separated by a partition (44), enabling a cooling fluid, e.g. water, to be circulated around blow tube units 16 aligned with the partition 44 to prevent curing of the moulding sand in the said units 16. The cooling fluid is passed from chamber 36 into an annular chamber formed between a cylindrical member 56, through which the moulding sand is passed, and a jacket member 60, and then passes into chamber 34. The units 16 comprise a flexible tip member shaped to fit a recess in the core box 18 and attached to the unit 16 so as to be radially movable to accommodate misalignment between the unit and the core box.
Patent GB-1513607-A (GB)
Title: Seal assembly
IPC: F16J15/18
Filed: 1976-09-14
Abstract: 1513607 End face seals KOMATSU SEISAKUSHO K K 14 Sept 1976 [17 Sept 1975] 38085/76 Heading F2B A seal for the links 1, 5 of a track-laying vehicle comprises a backspring disposed between the flanges of a W-section sealing ring which is in sealing rotary contact with the end face of, for example, a bush 4 of the link 5 under the combined compressive force of the sealing ring, backup ring and air trapped between the flanges. The backup ring may be provided with a ridge instead of a groove, foamed material may be interposed between the backup ring and intermediate portion of the sealing ring, and the backup ring may be made of foamed material with a rubber coating.
Patent GB-907907-A (GB)
Title: Double skeleton catalyst electrode of silver
IPC: H01M4/98
Filed: 1958-11-26
Abstract: 907,907. Batteries; fuel cells. RUHRCHEMIE A.G., and STEINKOHLEN ELEKTRIZITAT A.G. Nov. 26, 1958 [Dec. 23, 1957], No. 38201/58. Drawings to Specification. Class 53. An electrode for an accumulator or fuel cell consists of a supporting skeleton having embedded in it granules of Raney silver. The skeleton may contain from 1% to 80% of its own weight of silver, and may be made of silver, nickel, steel, carbon or graphite. The Raney alloy may consist of silver alloyed with alkali or alkaline earth metals, aluminium, magnesium, zinc or copper. The alloy is crushed to provide particles less than 100 Á in size. Particles above 35 Á are separated by screening, and those below 35 Á are separated by wind-sifting or sedimentation. Part of the silver may be replaced by manganese, chromium, or molybdenum. The electrode is made by mixing the powdered Raney silver alloy with the powdered material which is to form the skeleton and moulding the mass into the required shape under pressure and sintering at 400‹-800‹ C. The soluble metals are leached out with acids or caustic solutions, copper being removed in a strongly alkaline solution, the alloy being subjected to a positive potential. Specifications 667,298, 797,944 and 806,644 are referred to.
Patent GB-1502520-A (GB)
Title: Piecing apparatus for spinning machines
IPC: D01H15/00
Filed: 1976-09-16
Abstract: 1502520 End catchers W REINERS VERWALTUNGS GmbH 16 Sept 1976 [18 Sept 1975] 38404/76 Headings DID and D1J An automatic piecing apparatus comprises an end catcher in the form of a slit bent suction tube 38, 39 which is pivoted at 37 on a suction conduit and is connected at the pivot point with a transfer arm 41. A thread gripper 42 is associated with the transfer arm 41 and is movable to convey a broken thread end from the pivot point to the end of the transfer arm. As described, upon thread breakage, a thread sensor 17 signals a light to a photoelectric cell 107 on a travelling servicing carriage 24 which stops in front of the faulty spinning station and connects end catcher tube 38, 39 with a suction duct 30 on the spinning machine frame. The winding on spool 22 is lifted from its driving roller and the opening roller 14 is stopped. The unwinding roller 48 then removes the broken thread end from the spool 22 and it is drawn into the end catcher tube 38, 39 and emerges from the slit in the position illustrated in Fig. 3 (not shown). The thread end is lifted out of traverse guide 19 and guides 75, 76 move to form a reserve loop in the thread, Fig. 4 (not shown). Transfer arm 41 is then connected to the suction duct at the pivot point and a thread gripper 42 conveys the thread to a clamp 43 at the end of transfer arm 41 where it is separated to form a new end which is unravelled by a roller (58). The transfer arm 41 then swings up to the thread withdrawal tube 15 of the spinning station and the rotor recommences operation. The thread clamp 43 and the reserve loop are released and the thread is drawn into the withdrawal tube 15. The piecing members are then withdrawn and the spool 22 is lowered onto the winding roller 20.
Patent GB-843590-A (GB)
Title: Collision course warning device
IPC: G01S13/937
Filed: 1958-11-28
Abstract: 843,590. Radar. STANDARD TELEPHONES & CABLES Ltd. Nov. 28, 1958 [Dec. 3, 1957], No. 38480/58. Class 40(7). In a craft-borne collision-warning pulse radar system comprising a rotating aerial 2 and a P.P.I display 8, echo pulses from objects within a selectable range are recorded during one rotation of the aerial on a magnetic disc rotating synchronously therewith and during a subsequent rotation of the aerial the recorded pulses are read out and compared with the directly received echo pulses, an audible and visual warning signal being generated if the pulses so compared overlap in time. As described, during a first aerial rotation echo pulses are recorded on a first magnetic disc 14; during the next (n-1) aerial rotations (n#2) a D.C. erasing voltage from a source 22 is applied to the second disc 15; during the (n+1)th rotation the pulses recorded on the disc 14 are read out and compared in a coincidence circuit 33 with the directly received echo pulses which are also recorded on a second magnetic disc 15; during the next (n-1) rotations the erasing voltage is applied to the first disc 14 and during the (2n+1)th rotation the pulses recorded on the second disc 15 are read out and compared in the coincidence circuit 33 with the directly received echo pulses which are also recorded on the first disc 14; the above cycle of operations is then repeated. The required recording/reading sequences for the discs 14, 15 are achieved by connecting the recording/reading heads 17, 18 of the discs 14, 15 to the rotating arms 19, 21 of a four-position rotary stepping switch 21 which are controlled via a gearing 29, 30 by a pawl and ratchet mechanism 25, 26 which moves the arms 19, 20 one step in a clockwise direction when an actuating pulse is applied to a solenoid 24 controlling the pawl 25, such pulses being generated by a switch 23 actuated by a cam 32 having two teeth with an angular spacing of # = 360/n, the cam 32 being driven from the aerial 2 through a n : 1 reduction gearing 31. The required echo pulses are selected by a range gate 10 controlled by a delay circuit 13 triggered by the radar pulse generator 6 and the selected echo pulses are lengthened in a pulse stretcher 12.
Patent GB-1019687-A (GB)
Title: Arrangement for pivoting the derrick or extension arm in a crane, especially a ship's crane
IPC: B63B27/10
Filed: 1964-09-21
Abstract: 1,019,687. Slewing ships' derricks hydraulically. S/A. BERGENS MEKANISKE VERKSTEDER. Sept. 21, 1964 [Oct. 3, 1963], No. 38499/64. Heading B8B. The jib 11, Fig. 1, of a crane is slewed by two rotary vane hydraulic motors which operate in series so that the slewing angle is double the angle through which one motor can rotate. The motors are housed within the post 17, the wall 38, Figs. 5, 7, of which carries vanes 40, 41 and 53, 54. A central post 26, Fig. 1, carries vanes 36, 37, Fig. 5. When fluid is fed to chambers 42A, 42B, Fig. 5, the wall 38 rotates anticlockwise because the post 26 is rigid with a deck 24, Fig. 1. The upper blocks 53, 54 will also be rotated anticlockwise and since fluid is simultaneously supplied to chambers 55A, 55B vanes 51, 52, and with them the jib 11, will also rotate anticlockwise. By using three motors the angle of rotation of one may be trebled. Alternatively the turning moment may be increased, with a corresponding decrease in the angle of rotation, by using rotors with three or more vanes.
Patent GB-1173268-A (GB)
Title: Recorded Information Detection Apparatus
IPC: G11B27/36
Filed: 1968-08-14
Abstract: 1,173,268. Monitoring playback of records. INTERNATIONAL BUSINESS MACHINES CORP. 14 Aug., 1968 [6 Sept., 1967], No. 38770/68. Heading G5R. Failure of information signals read from a record track to satisfy predetermined criteria causes testing means to send a signal to a positioning means which, on receipt of such a signal, shifts the reading head transversely with respect to the track, the receipt of a succession of such signals causing the reading head to be moved through a predetermined sequence of positions. As shown, magnetic reading heads 21 are normally centred over selected tracks on discs 24, 25 by means of a servo system 35, 36, 37, 23 fed by a servo head 22. Detection of an error (e.g. due to a blemish on the record track) in the information read out causes a bias trigger circuit 52 to change over, sending a signal to the servo system which shifts the heads 21, 22 radially with respect to the record discs 24, 25. A further error signal switches the bias trigger circuit back and shifts the heads in the opposite direction, and so on.