baber/WOPTO huggingface dataset:
Patent GB-1338690-A (GB)
Title: Fire alarm system
IPC: G08B25/01
Filed: 1971-11-08
Abstract: 1338690 Fire alarms SECURITAS ALARM AB 8 Nov 1971 [12 Nov 1970] 51731/71 Heading G4N  A fire alarm system comprises a two-wire loop 1, 2 terminated with a passive symmetrically conductive load R1 and containing a plurality of fire sensors A1 ... An, each sensor comprising a switching device 6, an asymmetrically conductive device 5 and an impedance such as resistor R3. The loop 1, 2 is supplied with alternating current or periodically reversed direct current from a source 3, the current being monitored at 4 across a resistor R2. In the absence of fire, the impedance of the line 1, 2 is symmetrical to supply of either polarity, but in the event of a fire, one of the switching devices 6 becomes closed, connecting an asymmetrical circuit including diode 5 across the loop. An alarm is initiated by circuit 7 in response to such asymmetrical current. The circuit is immune from false alarms due to earth fault. In Fig. 5 (not shown) each switching device 6 and diode 5 are replaced by a single thyristor triggered in the event of a fire by means of a smoke detector. In Fig. 6 (not shown) the sensors A1 ... An are arranged in series with conductor 1, each sensor comprising a normally closed switching device (such as a fuse) bridged by the series combination of a diode and resistor.
Patent GB-1285496-A (GB)
Title: Piston and cylinder assembly for air valve
IPC: F16K15/14
Filed: 1970-11-03
Abstract: 1285496 Piston packing; valves SAHLIN ENG CO Inc 3 Nov 1970 [26 Nov 1969] 52239/70 Headings F2T and F2V A piston and cylinder assembly for an air control valve comprises a cylinder bore having a transverse wall 139 and a one-piece piston body of self-lubricating polymer plastics material (e.g. P.T.F.E. or fluorinated ethylenepropylene polymer) having a transverse surface 141 and an annular groove which undercuts the peripheral surface of the piston and opens towards the transverse wall to form an outwardly-inclined flexible sealing lip 130. Preferably, the piston is employed as the valve head of the control valve described in Specification 1,233,203.
Patent GB-1521090-A (GB)
Title: Safety razors
IPC: B26B21/26
Filed: 1976-10-20
Abstract: 1521090 Razors GILLETTE CO 20 Oct 1976 [31 Dec 1975] 53313/75 Heading B4B A safety razor comprises an elongated flexible blade strip 12 sharpened along at least one of its longitudinal edges and a holder provided with means 9 for holding the strip with an exposed portion of its cutting edge 13 in curved form. The blade strip 12 is anchored at its ends in a removable member 8 of a hollow casing 5 in which is rotatably mounted a cam member 9 having a channel defined by flanges 10, 11. The strip is provided with a cam follower 14 arranged to engage in the channel such that by rotating the cam through pre-selected angles of rotation, the cutting edge of the blade be presented in a convex form, Fig. 2 (not shown), straight as shown or in a concave form, Fig. 4 (not shown). In a modification, the blade strip may be in the form of a coil such that a fresh cutting edge portion can be advanced into the cutting zone.
Patent GB-1515859-A (GB)
Title: Packaging materials and containers made therefrom
IPC: B65D8/00
Filed: 1975-10-13
Abstract: 1515859 Opening containers ZIRISTOR AB 13 Oct 1975 [18 Oct 1974] 53695/77 Divided out of 1515858 Heading B8D The subject matter is substantially as disclosed in Specification 1,515,858, but the claims relate to the provision of the tear filament 8 partially embedded in the inner wall surface of the container body and to sheet of heatshrinkable plastics for forming such a container and incorporating the tear filament adjacent its edge.
Patent GB-1495971-A (GB)
Title: Haymaking machines
IPC: A01D78/10
Filed: 1974-12-12
Abstract: 1495971 Haymakers TEXAS INDUST RIES Inc 12 Dec 1974 [12 Dec 1973] 53825/74 Heading A1F A rotary rake head haymaker comprises tine groups independently vertically movable, each tine group having at least two tines, one located to the rear of the other with respect to the rotational direction of the rake head. Two pairs of tines 25 supported on arms 18, 19 form a group which is vertically movable about pivot 15 secured to a central hub 9. Connecting the arms 18, 19 and arranged to form almost a complete ring are screen elements 21 having rounded leading edges and inclined trailing edges. The tines are secured to upwardly bent ends 24 of the arms 18, 19. The screen element may take the form of a number of parallel rods with a tubular supporting skid. In an embodiment (Figure 8) a part 53 connects the two arms 50, 51 and supports a third pair of tines 25 forming part of the group. The screen element is replaced by a skid and a bracket 56. A pivotally mounted spherical ball 34 supports the rake head. In another embodiment, (Figure 11, not shown) the screen element can be omitted and each tine group is supported by a pivotally mounted spherical ball 95. The tines can be moved to alter their angle of attack.
Patent GB-1198747-A (GB)
Title: Improvements in or relating to Hose.
IPC: D04B9/54
Filed: 1968-11-13
Abstract: 1,198,747. Stockings. BURLINGTON INDUSTRIES Inc. 13 Nov., 1968 [2 July, 1968], No. 53906/68. Heading A3V. [Also in Division D1-2] A stocking has in the welt or elsewhere a loop of knitted fabric 44, shorter than adjoining areas of fabric behind which a suspender 40 of a support garment 42 may be inserted. The loop is formed by several stitches held over a number of courses. Several sets of loops are provided each of which has loops at different heights so that adjustments can be made for short or long legs. The welt may be a double welt with the loops on the inside or outside fold.
Patent GB-1163276-A (GB)
Title: Improvements in or relating to Agricultural Machines
IPC: A01D34/28
Filed: 1966-12-01
Abstract: 1,163,276. Combine-harvesters. BLANCH-LELY Ltd. 1 Dec., 1966 [1 Dec., 1965], No. 53951/66. Heading AlF. [Also in Division F1] In a self-propelled combine wherein the header is supported by two pairs of rams 12, 13 arranged between the opposite ends of a transverse beam 10 carried by the elevator-tunnel 4 and the corresponding ends of the front-axle 11 of the machine, the hydraulic circuits of the pairs of rams are in parallel, one circuit containing an accumulator, whereby the header may be lifted resiliently, and the other having no accumulator. The mower table 3 is in two parts pivoted separately about shafts 6 on the tunnel 4 and tiltable there about by rams 14. The reel 9 is driven by a hydraulic motor 18 and is adjustable vertically and horizontally by further rams 15, 16. The steering of the rear wheels (not shown in Fig. 1) is also hydraulically controlled. The hydraulic circuit is shown in Fig. 3; a double-acting ram 29 operates a steering rod 30 on the rear wheels 31 and is itself operated by a multiport valve 25 connected to the steering-wheel 26. The pump 21 feeds the remaining rams 12-16 through a bank of valves 43-50 accessible to the driver. The rams 13 are connected in parallel with an accumulator 53 and pressure gauge 54 but the circuit to the rams 12 has no accumulator. There is a lost-motion connection between the beam 10 and the rams 12 so that the movement of the platform by the rams 13 is not restricted by the rams 12.
Patent GB-1434999-A (GB)
Title: Production of elastomers
IPC: C08F2/04
Filed: 1973-11-21
Abstract: 1434999 Copolymerizing vinylidene fluoride E I DU PONT DE NEMOURS & CO 21 Nov 1973 [22 Nov 1972] 54073/73 Heading C3P A process for the continuous copolymerization of vinylidene fluoride and at least one other polymerizable unsaturated fluorinated monomer to a polymeric product having a broad molecular weight distribution which comprises (a) introducing monomers, water and watersoluble free radical generator to a first reactor at such flow rate that the residence time is sufficient to form a high molecular weight product, (b) withdrawing product from the first reactor at a rate equal to the rate at which monomer is introduced thereto, (c) introducing the high molecular weight product, further fluorinated monomers and a chain transfer agent to a second reactor, the residence time in said second reactor being sufficient to produce a low molecular weight product and (d) continuously withdrawing polymeric product from the second reactor. The comonomers may be fluoro- or chlorofluoroolefins, fluorinated vinyl esters, derivatives of perfluoroacrylic acid or fluorinated alkyl vinyl ethers. The water-soluble initiator may be ammonium or an alkali metal persulphate, optionally with a reducing agent, e.g. sodium bisulphite. The chain transfer agent may be an ester, alcohol, ketone, mercaptan, hydrocarbon or halogenated hydrocarbon. Emulsion stabilizers and dispersing agents may be added to the first reactor. Examples describe the copolymerization of vinylidene fluoride with (1) hexafluoropropylene in the presence of ammonium persulphate with the addition of diethyl malonate to the second reactor, and (2) hexafluoropropylene and tetrafluoroethylene in the presence of ammonium persulphate and sodium sulphite with the addition of ammonium persulphate and diethyl malonate to the second reactor.
Patent GB-1156258-A (GB)
Title: Stretcher Support Apparatus
IPC: A61G3/00
Filed: 1967-12-05
Abstract: 1,156,258. Ambulances. BINZ & CO. 5 Dec., 1967 [6 Dec., 1966], No. 55242/67. Heading B7B. A stretcher platform 10 is supported at one end by links 16 connected to a U-shaped member 18 pivoted to the platform, the member 18 lying along the underside of the platform in the erected position. At its other end the platform is supported by angled links 12 and a fluid pressure ram 28 provides a restoring force to assist in raising the stretcher to its erect position.
Patent GB-1372087-A (GB)
Title: Method and apparatus for forming crystalline tubing from a refractory  material
IPC: C30B13/00
Filed: 1971-12-01
Abstract: 1372087 Making crystalline tubing ARTHUR D LITTLE Inc 1 Dec 1971 [14 Dec 1970] 55831/71 Heading BIS Crystalline refractory tubing which may be monocrystalline, is formed by moving relative to one another a preformed tube of refractory material and a heating zone maintained at a temperature sufficient to melt the refractory material, at such a rate as to form a continuously advancing molten ring of the material which is in contact with preformed and forming crystalline sections of the tubing. The heating zone may be positioned externally and/or internally of the tube. The source of the heat may be derived from infrared sources such as incandescent filaments, arcs imaged arc and lasers, electron beams, gas discharge systems and direct r.f. coupling. Many examples are given of both internal and external heating systems, including apparatus for carrying out these methods. The preformed tube may be made from alumina, thoria, zirconia, gallum arsenide, pseudobinary compounds such as AlAs-GaAs and elements such as boron and silicon. Tubing of alumina is exemplified.
Patent GB-1263691-A (GB)
Title: Improvements in optical projection apparatus
Inventor: WIKKENHAUSER GUSTAV
IPC: G01C21/00
Filed: 1967-12-11
Abstract: 1,263,691. Cinematography; optical projectors. G. WIKKENHAUSER. March 7, 1969 [Dec. 11, 1967], No. 56295/67. Headings G2A and G2E. An apparatus for projecting a number of successive frames on a stationery film has a scanning mirror on which images of the frames are simultaneously focused by a number of fixed laser, and a single projection lens to project successively the intermediate images on to a screen as the mirror is moved through predetermined positions. As shown a film 1 is held in five similar gates 5 to 9, only one of which 5 is shown in detail, each gate having a pressure pad 19 and associated pins 20 which engage perforations in the film. A lamphouse 18 is provided at each gate. Objective lenses 21 form images of each frame located in gates 5-9 at a front silvered mirror 23 mounted for rotation about axis 22 so that successive frames may be projected on to a screen 26 by projection lens 24 as the mirror 23 is intermittently rotated. This is achieved by a number of solenoids 27 to 30 through armatures 33 to 36 and associated stops 43 to 46 and 38 to 41. Means may be provided to equalize the illumination provided by lamps 18. The plane mirror 23 may be replaced by a stack of mirrors shiftable along axis 22 and suitably orientated. (For Figure see next page)
Patent GB-1281303-A (GB)
Title: Improvements in or relating to mechanisms for separating groups of sheets from a stack of paper sheets
IPC: B26D7/01
Filed: 1970-11-27
Abstract: 1281303 Feeding sheets HANS SICKINGER CO 27 Nov 1970 [29 Dec 1969] 56502/70 Heading B8R Groups of sheets are separated from the bottom of a pile 16 by a revolving disc 14 having a slot 43 through which a group of sheets passes to be deposited on conveyer belts 44 running over table 13. A group of sheets is caused to enter slot 43 by a finger 36 which enters the pile and lifts the upper portion from the group to be separated, the group then being deflected downwards into the slot by a rotating shaft 32 having a spiral slot 33 which engages the front edge of the group. A separated group meets a front stop 54 at a punching station and the sheets are aligned by a rear jogger (56, Fig. 3, not shown) and a side jogger 57. The front stop and rear jogger are adjustable on carriages and the side jogger is adjustable on rods 58. After a row of holes has been punched along one edge of a group, stop 54 is retracted and the group is discharged into a bin 94.
Patent GB-1205428-A (GB)
Title: Automatic pneumatic impact hammer
IPC: E02F5/30
Filed: 1967-12-13
Abstract: 1,205,428. Percussive tools. ALLIED STEEL & TRACTOR PRODUCTS Inc. 13 Dec., 1967 [5 Oct., 1967], No. 56607/67. Heading B4C. [Also in Division E1] A percussive tool of the type including an impact ram 35 reciprocable in a cylinder 11 and a tool bit 40 also mounted for reciprocation in the cylinder comprises at least one deactivating port 30 which is so positioned that, when the tool is lifted from a work surface or is under " no load " conditions, " bouncing " of the tool bit against its holder 49 will not interrupt communication between the cylinder bore and the atmosphere via the port(s) 30. When lifted or when under " no load " conditions air below the ram will be exhausted via port(s) 30 and the ram will stop reciprocating. In operation, with the tool bit engaging a work surface, air is introduced via an automatic valve V into the upper part of the cylinder, thus forcing the ram downwardly, air below the ram being exhausted via port 28, passage 27 and a gap 32. When the ram passes an exhaust port 29 the pressure drop above the ram is sensed by the valve which then connects the upper part of the cylinder to exhaust via gap 32 and admits air to the lower part of the cylinder via the port 28. The ram continues to reciprocate until the tool is raised or is under " no-load " conditions. The tool is resiliently carried by support plates 17.
Patent GB-1453828-A (GB)
Title: Fluoro-substituted thiaxanthene derivatives
IPC: A61K31/54
Filed: 1972-12-08
Abstract: 1453828 Thiaxanthene derivatives KEFALAS AS 28 Nov 1973 [8 Dec 1972] 56910/72 Heading C2C The invention comprises compounds of formula and their addition salts with pharmaceutically acceptable acids, wherein X is Cl, CF 3  or SO 2 NMe 2 ; Z is >CHCH 2 - or >C : CH-; and Y is >NH, >NMe, >NCH 2 CH 2 OH or > CHCH 2 CH 2 OH, and the esters of these alcohols with C 1-17  alkanoic acids. In examples, these compounds are prepared by (1) reducing the unsaturated to the saturated compounds; (2) reacting the analogues having the side-chain terminated by: CH 2 , Cl or NMe 2  with (3) forming the compound where Y is by reacting that where Y is >NH with ethylene oxide; (4) esterifying the alcohols; (5) reacting a 9-Li derivative of a 9-unsubstituted 3-fluorothioxanthene (which is derived from the corresponding thiaxanthone) with (6) splitting the corresponding methyl ether of the desired alcohol.  Analogues of the compounds (I) having a 5- or 6-Cl or CF 3  substituent instead of 6-F are also disclosed. Starting materials and intermediates otherwise described are 1-(3-chloropropyl)-4-(2-methoxyethyl)piperazine, and those of formulµ R<SP>2</SP>(-OH)CH 2 CH : CH 2  and R<SP>2</SP> : O, where R is 3-FC 6 H 4 , R<SP>1</SP> is 2-chloro(or trifluoromethyl)-6- fluorothiaxanth-9-ylidene, and R<SP>2</SP> is 2-dimethylsulphamoyl-6-fluorothiaxanth-9-ylidene. Therapeutic compositions having neuroleptic activity comprise compounds of the above formula, and may be administered orally or parenterally.
Patent GB-1439789-A (GB)
Title: Holding relay with sealed contact unit
IPC: H01H51/28
Filed: 1973-12-18
Abstract: 1439789 Sealed contact units; electromagnetic relays INTERNATIONAL STANDARD ELECTRIC CORP 18 Dec 1973 [3 Jan 1973] 58473/73 Addition to 1439788 Heading H1N An electromagnetic holding relay, Fig. 2, embodying a sealed contact unit as disclosed in the parent Specification 1,439,788 the contact unit 1 magnetically coupled by branches 17, 18 of flux guides 9, 10 which join the poles of two magnets 3, 4 and the flux paths arising from parallel polarization cause attraction of the contact armature 15. The magnets 3, 4 are shown as electromagnets each with two windings 5, 6 and 7, 8 and these can be connected as control co-ordinates of a matrix including several such relays but the simple relay need only have one non-reversible magnet (polarized either permanently or remanently) and one reversible remanently polarized magnet. Embodiments of relays for use in crosspoint arrays of telephone systems, each relay having two sealed contact units and all the magnets carrying two windings each are described with reference to Figs. 3 and 4 (not shown) and Figs. 5 and 6 (not shown). In these relays the electrically conducting portions of the opposed contact units are separated from one another by insulating foils.
Patent GB-1255938-A (GB)
Title: An improvement in or relating to a heat-resisting and retaining moulding for hot tops
IPC: B22D7/10
Filed: 1968-12-10
Abstract: 1,255,938. Ingot moulds. AIKOU KOGYO KAISHA Ltd. 10 Dec., 1968 [12 Dec., 1967], No. 58708/68. Heading B3F. [Also in Division C3] A steel ingot is cast in an ingot mould the head 1 or head-box of which is lined with a lining comprising at least two layers, an inner layer 3 of a heat-resisting material and an outer layer 2 of heat-absorbing material. The lining may comprise four flat tiles 2 wedged and held in the mould head 1 or head-box by four corner tiles 2a. In a further embodiment, a third intermediate layer of heat-absorbing material is used. The layer materials are disclosed (see Division C3).
Patent GB-1402100-A (GB)
Title: Pipe couplings
IPC: F16L19/06
Filed: 1971-12-17
Abstract: 1402100 Pipe couplings BRITISH STEEL CORP 15 March 1973 [17 Dec 1971] 58748/71 Heading F2G In order to provide enhanced grip, in both axial directions, on a steel pipe 2, a split mild steel anchoring ring 7 is tightened radially by direct wedging action, so that its sharp corners 10 and 11 both bite into the pipe 2. The rubber sealing ring 4 is made effective by axial pressure exerted, on tightening ring nut 14. Alternatively, a self-sealing gasket (20, Fig. 3, not shown) is provided.
Patent GB-1270587-A (GB)
Title: Indicating or detecting apparatus for nuclear radiation such as gamma rays
Inventor: LOVEDAY GEORGE CHRISTOPHER
IPC: G01T1/164
Filed: 1969-12-03
Abstract: 1,270,587. Scintillation detectors. EKCO INSTRUMENTS Ltd. Nov.17, 1970 [Dec. 3, 1969], No. 59102/69. Addition to 1, 213, 478. Heading G1A. In a scintillation detector system similar to that of Fig. 6 of parent Specification, the analyser and logic gating system is modified in that each analyser comprises only two pulse height channels, instead of three, and, instead of AND gates, the logic circuit arrangement comprises pairs of gates, (one gate for each row of adjacent rows of scintillators) which gates respond differently from each other to a pulse or pulses from the analyser outputs to which they are connected in common, so that they do not permit simultaneous pulses to occur at their outputs. Thus considering rows Y 1  and Y 2 , if a scintillation occurs in one element of row 202-223, coincidence gate 257 receives inputs from the high range output 251a of analyser 251 and from the low range output 252b of analyser 252 to produce an output on Y 2 . Logic circuit 256 however, although receiving an input from line 251a which would normally produce an output pulse, also receives an input from 252b at its inhibit terminal, which prevents a pulse on Y 1 . Logic circuit 258, which is again a coincidence circuit, is connected to the low range output 251b of analyser 251 and thus receives no pulse therefrom. The storage and C.R.T. display facilities described for the apparatus of 1, 213, 478 are also available for the present apparatus.
Patent GB-1432619-A (GB)
Title: Transmission belts
IPC: B29B15/00
Filed: 1973-12-20
Abstract: 1432619 Laminated belt constructions INDUSTRIE PIRELLI SpA 20 Dec 1973 [26 Jan 1973] 59146/73 Heading B5N [Also in Division F2] The abrasion-resistance of a transmission belt is improved by applying to the driving surface thereof a fabric which has been impregnated with a solution of a neoprene formulation containing isocyanate, allowing the solvent to evaporate and cross-linking the deposited material. In a modification, the fabric is rubberized at one face only, which face is then applied to an uncured belt body; the assembly is then cured and the aforesaid solution is applied to the non-rubberized face. The cross-linking is achieved in 24 hours at 50-60 C. and 100% RH or in 10 days at ambient temperature. A suitable solution comprises 4À5% neoprene, 75% solvent, e.g. toluene, and 15% isocyanate. The belt may be flat, V-shaped or toothed.
Patent GB-1324580-A (GB)
Title: Fuel oil desulphurization
IPC: C10G65/12
Filed: 1971-12-20
Abstract: 1324580 Hydrocracking and hydrodesulphurizing hydrocarbons TEXACO DEVELOPMENT CORP 20 Dec 1971 [28 Dec 1970] 59165/71 Heading C5E Petroleum hydrocarbons of reduced sulphur content are produced by hydrocracking a residue-containing petroleum fraction, cooling the hydrocracked effluent and hydrodesulphurizing at least part of the effluent. The hydrocracking is carried out at 750-950 F. and 500-5000 p.s.i.g. using a catalyst comprising a Group VI metal, e.g. Cr, Mo or W, and a Group VIII metal, e.g. Fe, Co or Ni on a support having a surface area of at least 250 m.<SP>2</SP>/g. and a pore volume of at least 0À6 c.c. per gram. The hydrocracking catalyst can be in the oxide or sulphide form; suitable supports are alumina containing activated silica or boron oxide and alumina treated with hydrofluoric acid. The hydrocracked effluent can be cooled by indirect heat exchange or by the addition of an aromaticrich fraction such as a heavy cycle gas oil from a fluid catalytic cracking unit. The hydrodesulphurization is carried out at 600-850 F. and 500-5000 p.s.i.g. using a catalyst comprising a Group VI metal and a Group VIII metal, which can be in the oxide or sulphide form, on a support such as alumina, zirconia, silica or magnesia. The feed to the hydrocracking process can be a whole crude oil, shale oil, tar sand oil or vacuum residual and at least 50% of the charge can boil above 1000 F.; the hydrocracking is carried out so that 25-70% of the 1000 F. + portion of the charge is converted to material boiling below 1000 F.
Patent GB-1397326-A (GB)
Title: Mechanisms for automatic cigarette lighters
IPC: F23Q2/48
Filed: 1972-12-21
Abstract: 1397326 Flint-ignited lighters ETABS GENOUD & CIE 21 Dec 1972 [5 Jan 1972] 59222/72 Heading F4F A cigarette lighter mechanism comprises a depressable control key 7 pivoted at 6 on a body 1 and carrying a key-return spring 9 wound on a pin 8 on the key 7, one arm 9a of spring 9 acting on an arm 11a rigid with a pawl 11 pivoted at 10 on key 7, pawl 11 driving a ratchet 5 of a flint wheel 3 and being returned to an inoperative position by spring 9, and another arm 9b of the spring acting directly on one end of a flint 4 to urge the flint against wheel 3. In a gas-fuelled lighter the key 7 also operates a lever 12 pivoted at 13 to open a gas valve 2.