baber/WOPTO huggingface dataset:
Patent GB-827462-A (GB)
Title: Polymerisation process
Inventor: RAUM ALARIC LOUIS JEFFREY
IPC: C08F10/00
Filed: 1955-10-20
Abstract: Catalysts for the polymerization of ethylene (see Group IV (a)) are obtained by mixing lithium aluminium tetrahydride with titanium, zirconium or vanadium halides, e.g. the tri- and tetra-chlorides.  An inert medium, such as petroleum ether, is preferably used in the preparation of catalyst and in the subsequent polymerization. Catalyst residues may be removed from the polymer obtained, by treatment with methanolic hydrochloric acid followed by methanol alone.  In the Provisional Specifications the Ti, Zr or V compound may be an oxychloride, a complex fluoride, an oxide or hydroxide, or an acetate, alcoholate, benzoate or acetyl acetonate.  Specification 827,464 is referred to.ALSO:Ethylene is polymerized with a catalyst formed by mixing lithium aluminium tetrahydride with a titanium, zirconium or vanadium halide, e.g. a tri- or tetrachloride.  The catalyst components may be admixed first or only in the presence of ethylene, and preferred molar ratios are specified.  An inert solvent is preferably included and disclosed are petroleum ether, pentane, hexane, cyclohexane, tetrahydronaphthalene, decahydronaphthalene, higher paraffins, benzene, xylene, dichlorobenzene, chlorinated naphthalene, or mixtures thereof. Polymerization may be batchwise or continuous and in examples ethylene is admitted throughout the reaction.  Catalyst may be destroyed and the product purified by treatment with methanolic hydrochloric acid followed by methanol. Tough polyethylene film is obtained on pressing.  In the Provisional Specifications the Ti, Zr or V compound may be an oxychloride, a complex fluoride, an oxide or hydroxide, or an alcoholate, acetate, benzoate or acetyl acetonate.  Specification 827,464 is referred to.
Patent GB-639879-A (GB)
Title: Improvements relating to coal mining power loaders for longwall faces
IPC: E21C27/12
Filed: 1947-11-11
Abstract: 639,879. Mining - machines. SIEMENSSCHUCKERT (GREAT BRITAIN), Ltd., and DIXON, B. J. Nov. 11, 1947, No. 30034. [Class 68 (i)] A coal cutting, breaking-down and loading machine comprises an underoutter, one or more hole-drilling heads separate from the cutter and vertically above it in both front and side views of the machine, each head being followed by a breaking-down device, a conveyer to convey the broken-down coal on to a face conveyer, and one or more driving motors, all combined together to form a transportable unit. A rope-hauled coal cutter 1 has a short chain-cutter jib 2 cutting a substantially rectilinear slot which allows entry of a low height conveyer 3 delivering to a face conveyer ; the coal is broken down by means of one or more superposed units, each comprising a drilling head 4 followed by a breaking device 7, the units being bolted together and having shafts connected by driving dogs. The breaking devices act in sequence from below upwards and may each comprise a tube with a series of plungers forced outwards at desired intervals. or two half tubes hinged together forwardly with means for forcing the outer half tube outwardly, or a tapered half tube in which an outwardly serrated semicircular wedge is moved forward hydraulically or mechanically.
Patent GB-707683-A (GB)
Title: Picture frames
Inventor: HARRINGTON PATRICK WALTER
IPC: A47G1/14
Filed: 1951-12-24
Abstract: 707,683. Picture frames. UNIVERSAL INJECTION PLASTICS, Ltd. Oct. 13, 1952 [Dec. 24, 1951], No. 30107/51. Class 11 A picture frame comprises a one-piece moulding of transparent plastic material consisting of a sheet portion 11 tor covering the front of the picture 13, and a marginal portion 10 surrounding the portion 11 and extending beyond the edges of the picture. A rearwardly projecting ridge 12 is also made integral with the moulding and serves to define a recess for the picture. The sheet portion 11 is recessed to lie behind the front of the marginal portion 10 which may be decorated as at 17 on the rear thereof, the effect being seen from the front of the frame. Members 15, 16 serve to retain the picture 13 and backing 14 in position. The sheet portion 11 is made thinner than the marginal portion 10, and the transparent plastic may be tinted if desired.
Patent GB-337921-A (GB)
Title: Improvements in presses for tennis and like racquets
IPC: A63B60/44
Filed: 1929-10-04
Abstract: 337,921. Moulding, B. A. Oct. 4, 1929. Racket presses; rackets, appliances for treating. - A device for straightening the handles of badminton, tennis, and other rackets, comprises a block E slidable along a strip A projecting from a racket-press member B, the block being adapted to embrace the hand 0 of the racket and to bear on one or more sides of the handle as it is moved outwardly from the press. The strip A is bevelled and received within a slot of corresponding shape in the block E. The handle C is disposed within a keyhole slot F in the block, which slot may be closed by a pad I carried by a pivoted arm H.
Patent GB-281264-A (GB)
Title: Improvements in means for securing railway rails to sleepers
IPC: E01B9/32
Filed: 1927-11-10
Abstract: 281,264. Maxey, R. E. L. Nov. 27, 1926, [Convention date]. Sleepers, metal, and securing rails thereto.-Inverted T- shape sleepers 1 have rail seats attached to or integral with the web 3, the rails being secured between central abutments 8 and hookbolts 11 passing through lugs 9 on opposite sides of the abutments. With attached seats, Fig. 2, the lugs 9 and abutments 8 are formed on the seats 6. With integral seats, Fig. 4, the seat is of H-section, the top flange forming the rail seating and the bottom flange 18 being continuous with the sleeper flange 2, the central abutments 20 being combined into one abutment.
Patent GB-647357-A (GB)
Title: Improvements in or relating to scaffolding
IPC: E04G7/30
Filed: 1947-11-14
Abstract: 647,357. Scaffolding frame units. BURTON, J. Nov. 14, 1947, No. 30259. [Class 20(ii)] A tubular scaffold frame unit has the cross tube 11, Fig. 1, co-planar with the uprights 10 and is connected to the ends thereof by U-shaped members 12 embracing and secured to the uprights and to opposite sides of the ends of the cross tube, removable bolts 20 extending through the limbs 14 of the members 12 and through diametrically formed holes 19 spaced along the length of the cross tube whilst the members 12 are formed with openings 18, the arrangement permitting adjustment of the distance between the uprights 10. The members 12 are riveted to the upper ends of the uprights and are provided with clamps 21 for ledgers 22 and extensions 15 to receive the lower ends of a similar superposed frame unit as described in Specification 641,984. A second cross tube 23, Figs. 1, 3 offset in relation to the uprights 10 may be secured thereto by U-shaped members 24 provided with hinged jaws and bolts 26, 27.
Patent GB-1115635-A (GB)
Title: 13-alkylgonenes related to 19-norprogesterone
Inventor: HUGHES GORDON ALAN
IPC: C07J75/00
Filed: 1965-07-16
Abstract: The invention comprises compounds of formula <FORM:1115635/C2/1> wherein X is a hydroxymethylene, carbonyl or ketalized carbonyl group, the hydrogen atoms at the 9, 8 and 14 positions have the trans-anti trans configuration with respect to the 13-ethyl group and the 10. hydrogen atom is cisto the 13-ethyl group, including racemates of 13b - and 13a -enantiomers, and their preparation by hydrolysis of a compound of formula <FORM:1115635/C2/2> wherein Y, in combination with unsaturation possible as shown, is a group hydrolysable to a keto group, or Y is a group hydrolysable to a hydroxy group in combination with an ethylenic bond terminating at the 5-position, followed where necessary or if desired by (a) 3-oxidation, (b) 20-oxidation, reduction, ketalization or ketal hydrolysis, or (c) acid isomerization to form the desired 4(5) double bond.  3 - Alkoxy - D 2,5(10) starting materials are prepared by Birch reduction of the corresponding 1,3,5(10)-trienes, optionally with 17-deacetoxylation.  (\sB) - 17b  - Acetoxy - 17a  - acetyl - 13b  - ethyl3 -methoxy-gona-1,3,5(10)-triene is prepared by acetylation of the corresponding 17b -hydroxy17a -ethynyl compound to give the 17b -acetoxy17a -ethynyl compound, reaction of this with N-bromo-acetamide to give the 17b -acetoxy-17a -dibromoacetyl compound, and treating this with zinc dust in acetic acid.  (\sB) - 13b  - Ethyl - 17b  - (1 - hydroxyethyl) - 3  methoxy - gona - 1,3,5(10)-triene is prepared by reaction of the corresponding 17a -ethyl-17b -ol with phosphorus oxychloride to give the 17ethylidene compound, and treating this with diborane.  The 20-keto compounds of the invention have progestational activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral or rectal administration.
Patent GB-678554-A (GB)
Title: Improvements in and relating to tools for moulding pastry in baking tins
IPC: A21C11/00
Filed: 1948-11-24
Abstract: 678,554. Pie-moulding machines. CONCENTRIC MANUFACTURING CO., Ltd., and BLOMFIELD, C. S. Dec. 23, 1949 [Nov. 24, 1948], No. 30477/48. Class 87(ii) In a pie-moulding machine the punch 4 carries pins 9 sliding in bores in the punch and arranged during the moulding operation to' engage and hold down the edges of a baking tin 3 placed in the die 1. The pins project above the punch and their upper ends are engaged by a plate 8 fast with a block 7 slidable on the ram 5 of the punch. The block 7 is depressed by a plunger 6 operated through a spring 6a by a cam (not shown), and is retracted upwards by a crank (not shown) acting through a tension spring 5a attached at its lower end to the block 7. After a tin with pastry has been placed in the die, the punch 4 and pins 9 simultaneously descend to engage the pastry and edges of the tin respectively. The punch is then retracted but the pins are held down by the spring 6a until the punch is well clear of the moulding, the pins 9 being retracted, together with the block 7 and plate 8, as the punch is fully lifted. Specification 592,603 is referred to. The Provisional Specification states that the pins 9 may be spring-loaded.
Patent GB-255297-A (GB)
Title: Improvements in machines for drying or chemically treating continuous lengths of fabric or paper
IPC: D06C7/00
Filed: 1925-12-02
Abstract: 255,297. Lambrette, A. Dec. 2, 1925. Drying fabrics and materials in long lengths.- The fabric is formed into festoons as it enters the drying chamber by the engagement of toothed sections d on the supporting arms b of the rails a with fixed stops e, e, the arms being pivoted to travelling endless chains arranged at the opposite sides of the chamber. The formation of the festoons and the transverse spreading of the fabric are assisted by jets of compressed air j, k. Each of the rails may be formed with a ridge or provided with a blade for facilitating the formation of the festoons. In a modification, the rails are directly attached to the endless chains which are driven forward intermittently a distance equal to the spacing of the rails; in this case one of the air jets is dispensed with. The jet may be provided with a throttle valve which is actuated by the moving rails.
Patent GB-1430446-A (GB)
Title: Method of absorbing viscous substances
IPC: C02F1/68
Filed: 1973-06-27
Abstract: 1430446 Treating water K W BENTFORS and H H GUSTAFSON 27 June 1973 [30 June 1972] 30524/73 Heading C1C [Also in Division A4] A hydrophobic viscous substance is absorbed by admixing therewith a dry cellulosic flock obtained by mechanically finely dividing newsprint or other paper, cardboard waste or paper waste. The method may be applied to absorbing oil spills on water, and the oil may be recovered by self-draining, pressing or centrifuging. The method may also be applied to liquid residues such as paints or glues to turn them into a solid form easier to dispose of.
Patent GB-1148080-A (GB)
Title: Method for the seeded growth of lithium niobate
Inventor: LOLACONO GABRIEL MICHAEL
IPC: C30B15/00
Filed: 1966-07-07
Abstract: 1,148,080. Lithium niobate. WESTERN ELECTRIC CO. Inc. 7 July, 1966 [12 July, 1965], No. 30534/66. Heading C1A. [Also in Division B1] Lithium niobate crystals are grown from a melt containing, in addition to the lithium and niobium, from 0À1 to 5 atom per cent based on niobium of molybdenum or tungsten and a seed crystal is used and oriented so that the growth proceeds in a direction forming an angle between 18 and 41 degrees with the polar 'c' axis and the growth occurs on the negative end of the crystal. Preferably the crystal is grown by dipping the seed crystal in the melt and subsequently withdrawing it, and the crystal may be rotated during withdrawal. The lithium/niobium atomic ratio is preferably with 5% of unity. The crystals obtained may be annealed by heating in oxygen.
Patent GB-618009-A (GB)
Title: Improvements in the heat treatment of duplex iron and steel bodies
IPC: F42B14/02
Filed: 1946-10-14
Abstract: In a method of heat treating a duplex body comprising an iron component and a steel component at least one of which is formed of sintered particles the body is heated to a temperature above the recrystallizing temperature of iron and above the critical temperature of steel and then cooled so that the hardness of the steel component is increased or restored to its original value while that of the iron is unchanged or decreased.  As applied to projectiles, the driving band may be made from powdered iron, swaged or otherwise attached to the steel body and the whole heated to the required temperature and quenched thereby hardening the steel body but leaving the iron driving band in the soft condition.  The heating may be carried out in an atmosphere of molecular nitrogen, pre-cracked ammonia or a mixture of hydrogen and hydrocarbon gases which do not carburize the iron or decarburize the steel.
Patent GB-475219-A (GB)
Title: Improvements in change-speed gearing for cycles
IPC: B62M25/00
Filed: 1936-11-09
Abstract: 475,219. Change-speed gearing. PRIMO, A. Nov. 9, 1936, No. 30551. Convention date, Nov. 16, 1935. [Class 80 (ii)] In change-speed gearing for cycles, the drive is received by a chain-wheel 1, Fig. 8, and passed on through a toothed wheel 2 to a countershaft gear cluster 5, 6, 7. The gears 6, 7 drive to loose gears 3, 4 concentric with a wheel hub H to be driven. Thus, the toothed wheels or rings 2, 3, 4 are constantly rotating at different speeds around a sleeve 15, Fig. 1, which is rigid with the hub H. Between the sleeve 15 and the slowest-turning wheel 3 are spring pawls 12, Fig. 3, which pick up the drive on the first or reduced speed when no higher speed is operative. The second speed, a direct drive, picks up when spring pawls 11, Fig. 4, are allowed to engage ratchet teeth 2<1> inside the wheel 2. The pawls 11 have inwardly projecting tails 11<1> adapted to be engaged by a control nut 9, Fig. 1, when the latter is in its extreme inner position, such engagement of the pawl tails 11<1> lifting the pawls 11 out of engagement and holding them so. The third speed, an overdrive, is picked up by pawls 14 like the pawls 11 which are carried by the sleeve 15 and engage ratchet teeth 4<1> inside the fastest-turning wheel 4. In the position of the nut 9 shown in Fig. 1, the third speed is operative. There is a crank disc 10 with fingers 10<1> projecting axially through the nut 9 which is connected by a steep screw 8 to a fixed axle 17. When the crank disc 10 is turned one step manually through suitable means, the nut 9 screws left a step and lifts the tails of the pawls 14, disengaging the latter, so that the drive falls on to the pawls 11. A second turn of the disc 10 lifts the tails 11<1> of the pawls 11 so that the drive falls on to the pawls 12.
Patent GB-1438664-A (GB)
Title: Pre-combustion chamber internal combustion engines
IPC: F02M31/04
Filed: 1973-06-27
Abstract: 1438664 IC engine intake and exhaust conduits; heating charge HONDA GIKEN KOGYO KK 27 June 1973 [28 June 1972] 30555/73 Heading F1B Mixture supplied through an intake conduit 17 to an auxiliary combustion chamber 5 is heated by heat transfer from the exhaust conduit 18 and leaves mixture supplied through an intake conduit 16 to a main combustion chamber 2 is heated by heat transfer from the engine coolant in a chamber 20.
Patent GB-876479-A (GB)
Title: Improvements in or relating to electrical switch structures
IPC: H01H50/44
Filed: 1957-09-30
Abstract: 876,479. Electromagnetic relays; switch contacts. TEXAS INSTRUMENTS Inc. Sept. 30, 1957 [June 13, 1957], No. 30576/57. Class 38 (5). [Also in Group XXXVI] An electromagnetic relay comprises casing members 22, 24 which are secured together by means of a stem 26 having a head 28 and being retained by a fastener 30. An insulating sleeve 34 is slidable along stem 26, and a plunger 40 of magnetic material is slidable on the sleeve. A compression spring 46 biases the plunger 40 against a flange 38 on the sleeve 34, and also biases a contact bridge member 42 against flange 36. Energization of coil 50 causes the plunger to compress the spring whereby the member 42 is raised and contacts 52, 54 are engaged with fixed contacts 56, 58, respectively, the contacting surfaces of the movable contacts being curved about an axis perpendicular to the axis of curvature of the fixed contacts whereby single-point engagement is made. The fixed contacts are carried by terminals 60, 62, the terminal 60 having an aperture 64 within which a projection 66 is disposed. This projection is carried by member 24 and extends from a guideway provided by the interfitting surfaces of members 22, 24, through aperture 64, and into a recess 70 in the member 22. The guideway includes side-walls 72 which interfit with side portions of terminal 60, and the upper and lower surfaces 76, 74 of the guideway co-operate with the adjacent portions of the terminal. The terminal 62 is secured in a similar manner and has a portion 90 provided with a threaded aperture 96 for the reception of a lead-securing screw. The part 90 also has a leg which is adapted to engage slot 88. As shown, a ferrule 98, secured to a lead 100, is welded to the protruding end of terminal 60. This terminal, however, may be formed in the same maner as the terminal 62. An additional terminal 102 is provided with head 104 which lies in recesses communicating with slots 110, 112. Projections 118 are engageable with and guide the contact bridge 42, whilst projections 120, 122 interfit with slots 124, 126, respectively. Shoulder members 128, 130 aid in retaining the coil 50, a relieved portion 134 being adapted to receive one of the end-turns of the coil.
Patent GB-448220-A (GB)
Title: Improvements in or relating to rolling mills
IPC: B21B13/12
Filed: 1935-11-05
Abstract: 448,220. Rolling. SCHLOEMANN AKT.- GES., 13, Steinstrasse, Dusseldorf, Germany. Nov. 5, 1935, No. 30611. Convention date, Dec. 14, 1934. [Class 83 (iv)] The vertical rolls 3 of a universal rolling mill are driven independently of the horizontal rolls 2, by separate electric motors 4, couplings 5, and reduction gearing 6 so that when the mill is reversed the relative slight difference in speed of the pairs of rolls can be adjusted as required, so eliminating the fixed speed relationship in usual gearing from a common drive. A regulator is associated with the reversing switch mechanism automatically to adjust the relative speeds.
Patent GB-1273787-A (GB)
Title: Cameras and diaphragm controls therefor
IPC: G03B7/085
Filed: 1969-06-17
Abstract: 1,273,787. Cameras. NIPPON KOGAKU K.K. June 17, 1969 [June 26, 1968], No.30619/69. Heading G2A. Diaphragm blades 4, 5 may be controlled automatically or manually. During automatic operation, a galvanometer shaft 1a is rotated according to the light incident on a photo-electric element (R 1 ), Fig. 2 (not shown), in a bridge circuit (R 1-4 ), Fig. 2 (not shown). This rotation is transmitted through linkage 2, 3 to the diaphragm. For manual operation, a button 11 is depressed relative to a knob 10 and against a spring 12. A rod 11b connected to button 11 is thereby lowered disconnecting switch contacts 13, 14 of the automatic circuit and lowering a lever 8 until it abuts linkage 3. Since rod 11b is now located adjacent a horizontal portion of a groove 10b, knob 10 is free to be rotated to move a lever 6 by means of pin 6a riding in a cam groove 10a. Linkage 3 can thus be sandwiched between levers 6 and 8 and moved to adjust the diaphragm.
Patent GB-478120-A (GB)
Title: Improvements in and relating to moulds for forming curved cementitious articles or building units
IPC: B28B7/02
Filed: 1936-05-11
Abstract: 478,120. Moulds for curved cementitious articles. TOWNLEY, J. C. May 11, 1936, No. 30713/37. Divided out of 476,680, [Group XXI]. [Class 87 (ii)] A mould for forming curved cementitious units such as for lining tunnels or sewers as set out in Specification 476,680 comprises a curved base plate 21 the rectilinear edges whereof are adjustable towards one another to vary the curvature of the plate. The plate 21 may be of flexible sheet metal adapted to bend or formed in two hinged sections. The edges may be connected by links 24 adjustable by turnbuckles 25. The plate may assume a semicircular cross-section. Strengthening plates 23 and angle pieces 22 are provided. The perimeter of the plate may have side walls 26 having slots 27 for accommodating bars for reinforcing the moulded units. The side walls 26 may be adjustably mounted on the plate. The units may be formed by shooting ' the material against the plate.
Patent GB-1030336-A (GB)
Title: Improvements in or relating to arrangements for transporting heavy loads
Inventor: BIRKE WOLFGANG
IPC: B63B9/00
Filed: 1963-08-02
Abstract: 1,030,336. Rack railway locomotives; lookout devices. LEIPZIGER STAHLBAU UND VERZINKEREI VEB. Aug. 2, 1963, No. 30790/63. Headings B7H and B7J. [Also in Division E1] A traction device has wheels 5, 6 arranged to run on railways track 1a and gear-wheels 7, 8 driven by diesel-hydraulic or electro-hydraulic drive means at each end engaging a rack between the track rails. A drawbar 9 and counterweight 12 are provided at the opposite ends of the device. In an alternative construction, Fig. 4 (not shown), without a counterweight, gear-wheels 7a, 8a are mounted directly on the drive means 4 with elastic members in their drive. Horizontal sections of the track are joined by a sloping section 1a, a gap being left between horizontal sections 2c, 2d of the rack of a shorter length than the distance between the axes of the gear-wheels 7, 8. Each traction device carries two cross-wires and a lamp or other light source and by aligning the cross-wires on one device with the light source on a second device side by side parallel relationship of the two devices is maintained.
Patent GB-205720-A (GB)
Title: Improvements in and connected with moulds for use in the erection of concrete buildings
IPC: E04G11/14
Filed: 1922-11-11
Abstract: 205,720. Carpmael, W. P., (Naamlooze Vennootschap Korrelbeton Maatschappij voor Woningbouw in Poreuze Beton). Nov. 11, 1922. Moulding walls in situ.--Shutters for moulding walls in situ comprise uprights 2 connected at their tops and bottoms by fixed panels 1, the intervening spaces being filled by removable panels 3 having flanges 10 adapted to engage rebates in the uprights, and extra stiffeners 9. The panels are held in position by vertical angles 4 clamped to the uprights by clamps 5 which also serve to clamp adjacent uprights together and which engage recesses in cross-ties 7 to position the shutters at the correct distance apart. The floor shutters 17 are carried by cross-beams 18 supported by wedges 19 on beams 20 which are suspended in hangers 21 attached to the uprights. Scaffold brackets 23 may be carried by the crossties 7.