baber/WOPTO huggingface dataset:
Patent GB-1291507-A (GB)
Title: A three way valve
IPC: B30B15/14
Filed: 1970-11-10
Abstract: 1291507 Valves; machinery safety devices TECHNOMATIC AG 10 Nov1970 [6 May 1970 30 June 1970] 53422/70 Headings F2J and F2V  A valve controlling a brake or clutch of a press has solenoid-operated pilot valves 54, 56 which, when energized, admit fluid from inlet 62 to chambers 77, 79 to shift pistons 76, 78 inwards to the positions shown where they close ports 48, 50 (Fig. 3), thereby disconnecting work port 46 from return port 47. Flow then takes place to work port 46 through the interior of pistons 76, 78 via back-pressure check valves. Spring 30 returns the pistons outwards to connect ports 46, 47 when valves 54, 56 are deenergized. Piston 82 responds via passages 92, 94 to the differential pressure in chambers 77, 79 caused by failure of either of valves 54, 56 and operates switch 110 to disable the press. Passages 96, 98 extending from chambers 85, 87 open into the seats 22, 23 whereby if either of pistons 76, 78 fails to move inwards when the valves 54, 56 are energized, or if either piston fails to return when the valves are de-energized, a pressure differential is again established across piston 82 which operates switch 110 as before. In a first modification (Figs. 7 and 8, not shown), instead of the passages through pistons 76, 78, a separate supply valve is provided having a piston (124) which responds to the pressure applied to one of the pistons 76, 78 by the corresponding pilot valve and unseats a valve member to connect the inlet directly to the work port. In a second modification, Fig. 9, the passages through the pistons are again omitted and replaced by angularly-spaced surface grooves which, when pistons 14, 16 are shifted inwards, connect inlet grooves 161, 163 to annular grooves inwards of seal rings 156, 158, thereby conducting to the work port which is located opposite the return port as in Fig. 1. Enlarged outer lands of pistons 14, 16 allow the inlet pressure to return the pistons when valves 54, 56 are de-energized. In each case, the pistons 76, 78 or 14, 16 are preferably of plastics.
Patent GB-1463994-A (GB)
Title: Oxo-related reaction for the production of triols and diols
IPC: C07C29/17
Filed: 1974-12-10
Abstract: 1463994 Triethanolmethane; 3-methyl-1,5- pentanediol CHEVRON RESEARCH CO 10 Dec 1974 [11 Dec 1973] 53467/74 Heading C2C The title compounds are prepared by contacting a mixture of 3-methylene-1,5-pentanediol and 3 - methyl - 2 - pentene - 1,5 - diol with a rhodium catalyst in homogeneous liquid phase with the mixture, and in the presence of CO at a partial pressure of 25- 5000 p.s.ig. and H 2  at a partial pressure of 50-10,000 p.s.i.g., at 75-250 C. A tertiary amine is preferably present as catalyst promoter and a mol ratio of CO : H 2  of 1 : 1 to 1 : 4 is preferred. The rhodium catalyst is generally a rhodium carbonyl compound prepared in situ from rhodium oxide or a salt of rhodium. The products of the process may be separated by distillation and the reaction may be effected batchwise or continuously. The organic feedstock for the process may be obtained as an approximately equimolar mixture by the reaction of formaldehyde with 3-methyl- 3-buten-1-ol. The latter compound if present as impurity is converted into 3 - methyl - 1,5- pentanediol in the present process. Examples 1 to 5 illustrate the process and a comparative Example 6 uses cobalt octacarbonyl as catalyst producing little triethanolmethane and only a trace of 3-methyl-1,5- pentanediol.
Patent GB-1283344-A (GB)
Title: Conductivity probes for liquid level detectors
Inventor: BURDON JOHN CHRISTOPHER
IPC: G01F23/24
Filed: 1968-11-12
Abstract: 1283344 Liquid level induction INVICTA PLASTICS Ltd 12 Feb 1970 [12 Nov 1968] 53510/68 Heading G1H An electrical conductivity probe 3 is secured into an aperture in a container wall C of a liquid container by a flanged (1a) deformable bush 1 which bush 1 is expanded radially by compression between a head 3a and a nut 2 on the probe 3, to grip and seal the aperture. The probe 3 is arranged in an electrical circuit with a vehicle radiator or brake fluid, chamber and an audible or visual warning device, Fig.2 (not shown).
Patent GB-1454226-A (GB)
Title: Device and method for providing a steady vacuum pressure  from a vacuum generator
IPC: F04B41/00
Filed: 1974-12-13
Abstract: 1454226 Vacuum generation apparatus ELEKTROMAT VEB 13 Dec 1974 [27 Dec 1973] 53903/74 Heading F1N A steady vacuum pressure is generated in a chamber 8 by a vacuum generator 1 connected to the chamber 8 through a flow restriction, the chamber having a restricted flow inlet connection 16 to atmosphere and a service connection 17 for connection to apparatus requiring a steady vacuum pressure. The flow restrictions shown are in the form of an orifice plate 6 having apertures of different diameter for selective disposition over the outlet 15 from the chamber 8 and a small bore duct 7 connected to the inlet connection 16. The degree of vacuum established in the chamber 8 depends upon the ratio of the flow restrictions, and to enable this to be adjusted, the duct 7 may be divided into sections (9a, 9b) inter-connected by chambers (10) having valve controlled openings to atmosphere, Fig. 2 (not shown). If the generation of an unsteady vacuum is to be avoided, the flow restriction at the outlet 15 is chosen so as to produce a velocity of flow therethrough which is sonic. Apparatus requiring an intermittent vacuum supply can be connected via pipes 4 to a distributer 3 positioned between the generator and the outlet 15 without disturbing the steady pressure in the chamber 8.
Patent GB-1291240-A (GB)
Title: Mti radar system utilizing variable interpulse periods
IPC: G01S13/22
Filed: 1969-11-05
Abstract: 1291240 Pulse radar WESTINGHOUSE ELECTRIC CORP 5 Nov 1969 [18 Nov 1968] 54261/69 Heading H4D An MTI system comprises means for transmitting pulses at time intervals following an exponentially increasing and/or decreasing pattern, means for receiving pulse echoes and means for applying weighting coefficients to the echoes when comparing a sequence of echoes. The invention permits an improved MTI performance with a lower number of pulses in a variable interpulse period cycle than in theprior art. In apparatus described in Specification 1,291,239 a sequence control and time interval counter generate the time interval patterns which are either "sawtooth" Fig. 2 or "tent" Fig. 3 (neither shown). The sequence control computes the next time interval by multiplying the last time interval by a constant, e.g. 1 1/10, 1.1/8, 1 3/32, 29/32 to produce an exponential pattern. By using the exponential pattern the number of different sets of coefficients for each pattern is reduced.
Patent GB-1179979-A (GB)
Title: Ball-Point for Water Soluble Ink.
IPC: B43K7/10
Filed: 1968-11-18
Abstract: 1,179,979. Ball-point pens. DAI NIHON BUNGU K.K., [trading as JAPAN STATIONERY CO. Ltd.]. 18 Nov., 1968, [16 Nov., 1967; 8 Jan., 1968], No. 54557/68. Heading B6P. A ball-point pen comprises a casing 1, divided into an overflow chamber 13 and a reservoir 12 by a resilient plastics bulkhead 8. An ink absorbent mass 15 in the overflow chamber 13 surrounds a capillary rod or core 6 which extends to the ball-point 2. A tube 7, mounted by the bulkhead 8 to surround the core 6 defines an annular venting passage about the core 6, which passage communicates with the reservoir 12 via a space 11 between the end of the tube and the ball-point holder 3. In (Fig. 2) communication is achieved with longitudinal slots (14) at the nib end of the tube 7. A vent hole 18 is provided in a plug 17 at the rear of the casing. In (Figs. 3 and 4) respectively, one or two ink-absorbent masses are positioned in the overflow chamber 13 by two or three resilient plastics bulkheads.
Patent GB-1161600-A (GB)
Title: Display Stands
Inventor: BANNISTER BRIAN CHARLES
IPC: A47F5/10
Filed: 1965-12-23
Abstract: 1,161,600. Display stands. MARLER HALEY (MFG.) Ltd. 15 Dec., 1966 [23 Dec., 1965], No. 54609/65. Heading A4B. A display stand comprises a closed horizontal frame 2 of angle iron supported on tubular legs 3 and vertical panels 4 releasably supported on the frame by means of elongate plastics strips 5 each comprising an upright portion secured by staples 6 to a panel and a hook portion (8) engaging the angle iron. The upright portion of the strip 5 may have two upwardly facing gullies (15) and two downwardly facing gullies (16) forming runners for sliding doors. The stand may have two horizontal frames and the panels may span the height between them. The panels may constitute cupboard doors or up and over doors or the panels may have runners for drawers or supports for shelves. A saddle (19) secured to the edge of a panel embraces the legs of the stand. The legs may be telescopic.
Patent GB-1491049-A (GB)
Title: Knitting machine
IPC: D04B35/12
Filed: 1974-12-18
Abstract: 1491049 Knitting-machines ETAB A CHOMARAT & CIE 18 Dec 1974 [18 Dec 1973 4 Oct 1974] 54702/74 Heading D1C Yarn 1 fed to a textile, e.g. circular knitting, machine 9 passes over an excess tension detector 6, 7 and forms a reserve on a feed device 8, the device 8 and machine 9 being controlled through circuitry shown in Fig. 6 such that excess tension stops the drive to the feed device through a microswitch and a contactor 32; if the excess tension disappears within a first time limit set by a delay device 33 the feed device resumes normal operation, otherwise the device 33 causes the machine to stop and if the excess tension has subsequently disappeared within a second time limit set by a delay device 34 both the machine and feed device resume normal operation, the machine being restarted by a further delay device 36, otherwise the device 34 acts on a memory 35 so that manual action is required to restart the machine. The detector 6, 7 includes said microswitch, which is adapted to be tripped by a cam fixed to the arm 7, and a visual indicator. The yarn also engages tensioning discs 4, a monitor 5 and a belt driven feed device 10. A camoperated programming device may be connected between delay device 36 and the machine for restarting the latter.
Patent GB-1152259-A (GB)
Title: Process for making Ethylene Polymers having improved Stress Crack Resistance
Inventor: HOBLIT LOUIS DOUGLAS
IPC: C08F10/02
Filed: 1966-12-09
Abstract: 1,152,259. Ethylene-butene polymers. DOW CHEMICAL CO. 9 Dec., 1966 [15 Dec., 1965], No. 55286/66. Heading C3P. Ethylene polymers having improved stress crack resistance are prepared by (a) polymerizing ethylene at 30‹ to 100‹ C. in an inert liquid diluent in the presence of a molecular weight control agent until the resulting polymer slurry contains 5 to 40% by weight polymer solids, (b) separating the polymer slurry into major and minor portions, (c) introducing butene-1 into the minor portion of slurry in the absence of a molecular weight control agent and polymerizing the butene-1 at 30‹ to 100‹ C. so that the butene-1 polymerized ranges from 0À05 to 5% by weight of the total amount of ethylene polymerized in step (a), (d) mixing the major portion of slurry from step (a) with the polymer mixture of step (c) and (e) recovering the polymer. The molecular weight control agent used in step (a) is, e.g., H 2  or acetylene and the specified catalysts are combinations of an alkyl aluminium with a reducible compound of a metal of Group IVA, VA, VIA or VIII of the Periodic Table. In the examples the catalyst comprises tri-isobutyl aluminium and TiCl 4 , the inert medium is n-hexane and during step (c) the major portion of the polymer slurry is stored in a digester containing isopropyl alcohol, to which is subsequently added the slurry from step (c). The resulting polymer is blow-moulded into bottles.
Patent GB-1139611-A (GB)
Title: Preparation of elastomeric interpolymers
IPC: C08F210/00
Filed: 1966-12-09
Abstract: 1,139,611. Making linear interpolymers. REXALL DRUG & CHEMICAL CO. 9 Dec., 1966 [9 Dec., 1965], No. 55289/66. Heading C3P. Linear interpolymers are made by copolymerizing at least one alpha-olefin and at least one unsaturated hydrocarbon in the presence of a transition metal compound and an organometallic compound using a diluent system comprising (a) at least one C 3  to C 5  aliphatic hydrocarbon in liquid form in an amount of from 15 to 99 volume per cent and (b) at least one hydrocarbon in liquid form which is an alphaolefin monomer of B.P. from - 48‹ to 35‹ C., or an aliphatic hydrocarbon as (a) but different therefrom, or a mixture thereof, in an amount of from 85 to 1 volume per cent of the total liquid diluent system and recovering, in discrete particle form, the interpolymers. The interpolymer may be ethylene and propylene, or butene, or 1-hexene, or ethylene and propylene and 1,4-pentadiene, or 1,5-hexadiene, or 2- methyl-1,5-hexadiene, or ethylene and propylene with branched hydrocarbons such as 4- methyl - 1 - pentene, 5 - methyl - 1 - nonene, 4 - methyl - 1 - hexene, or 6 - methyl - 1 - heptene, or ethylene and propylene and acetylene, or monocyclic diolefins, polyalkenylcycloalkanes, or bicyclic dienes, or 2-alkylnorbornadienes, or 5 -alkenyl-2-norbornenes. Hydrogen may be used to control the molecular weight of the interpolymers. The interpolymers may be vulcanized. The exemplified solvent mixtures are propylene and n-butane, and propylene and isobutane. The Specification includes a flow diagram of suitable apparatus, which includes a line for introducing carbon black into the polymerizing system.
Patent GB-1137257-A (GB)
Title: A meshing-screw rotor machine
IPC: F01C1/16
Filed: 1965-12-31
Abstract: 1,137,257. Rotary compressors, expanders and motors. SVENSKA ROTOR MASKINER A. B. Dec.31, 1965 [Jan. 13, 1965], No.55381/65. Heading F1F. In a two-stage rotary compressor of the externally meshing screw type, a pair of male and female screw-rotors 58, 60 in the high-pressure stage are mounted on shafts 46, 54, respectively, which are fixed to the corresponding screw-rotors 38, 40 in the low-pressure stage, said shafts being supported by ball bearings 48, 56 in an end cover 18 of a housing 12, 16 and sealed relative to a partition or plate 14 by rings 144, 146. The shaft 46 is furnished with two pairs of annular lands or projections 68, 70 that engage with corresponding lands or projections 64, 66 in a bore 62 within the rotor 58, the diameters of these projections being such as to effect an interference fit. Removal of the rotor 58 from the shaft 46 is facilitated by feeding a pressurized liquid into an annular space between the pairs of lands 68, 70 and into annular grooves 72, 74 through passages or channels 76, 78, 84 in the shaft, the pressure of the liquid being sufficient to cause radial expansion of the rotor and, thereby elimination of interference between the mutually abutting lands. Angular adjustment of the rotor 58 relative to the rotor 38 can be facilitated in a similar fashion. A lockable retaining-nut 90 is located on the shaft 46 between the rotor and the bearing 48. Similar provisions are made to permit removal of the rotor 60 from the shaft 54, which is substantially identical to the shaft 46, rotation of this rotor relative to the associated shaft being prevented by a pin 122. Lubrication of the bearings 48, 56, further ball bearings (44), 52, Fig. 3 (not shown), for shafts (42), 50 at the inlet ends of the rotors 38, 40, the rings 144, 146 and the outer surfaces of the rotors is effected by oil forced through openings and channels 124,136,138,148,154 from chambers 126, 134 by a pump 128 coupled to the shaft 46. Oil escaping from the bearings enters either an inlet port (24), Fig. 3, for the low-pressure stage through passages (158) or an inlet port (28) for the highpressure stage through passages (152). The outlet port 26 for the low-pressure stage is connected to the port (28) by a channel 30, an opening 32 in the plate 14 and a further channel 34, the outlet port 36 for the high-pressure stage being situated adjacent the plate 14 in axial alignment with the port 26. It is indicated that the invention is also applicable to rotary expanders and motors of the type aforesaid and that the invention is not restricted to a two-stage machine.
Patent GB-1407239-A (GB)
Title: Transducer housings
IPC: G10K11/00
Filed: 1972-12-01
Abstract: 1407239 RF shielding for transducers NATIONAL RESEARCH DEVELOPMENT CORP 20 Nov 1973 [1 Dec 1972] 55531/72 Headings H4J J7E J5D J5K2 J5E J5FX J21PX and J1X1 To measure the vibrations of a body 2, a Piezoelectric transducer 1 is clamped to its surface by means of a brass housing 3 and a hard brass cylindrical shield 4 is screwed down by a nut 5 so that its lower edge, formed as a knife edge, cooperates with the surface to produce an earthed shield for RF interference surrounding the transducer 1. The signal from the transducer is fed through an impedance matching transformer in compartment 6 to a coaxial plug and socket 7.
Patent GB-1329760-A (GB)
Title: Ohmic contact for group iii-v p-type semiconductors
IPC: H01L21/60
Filed: 1971-11-30
Abstract: 1329760 Semi-conductor devices GENERAL ELECTRIC CO 30 Nov 1971 [28 Dec 1970] 55543/71 Heading H1K An ohmic contact to a P-type region of a III-V compound semi-conductor 14 such as GaAs, GaP or GaAsP is formed by depositing a first layer 26 of an Au-Ge eutectic alloy or an Au-Si alloy and a second layer 27 of Be, Cd or Zn, and heating to fuse the metals into the semi conductor, the temperature required being only about 450 C. Both layers 26, 27 are preferably evaporated. The device may comprise a light-emitting diode, in which case the ohmic contact to the P-type material is bonded to an Au-plated Kovar (Registered Trade Mark) header and a housing including a lens is mounted thereon.
Patent GB-1198708-A (GB)
Title: Cyclic Iminoethers and Polymers Thereof
IPC: C07D265/08
Filed: 1967-12-07
Abstract: 1,198,708. Substituted oxazoline derivatives. ALLIED CHEMICAL CORP. 7 Dec., 1967 [7 Dec., 1966 (2)], No. 55693/67. Heading C2C. Compounds of the general formula where m is 2 or 3, and R<SP>1</SP> represents an alkylene or halogenated alkylene radical of 1 to 17 carbon atoms or an alkenylene or halogenated alkenylene radical of 4 to 17 carbon atoms, are prepared by cyclo-dehydrating an amide of the formula preferably by passing the amides over a silica or alumina catalyst at a temperature of at least 150‹ C. The products may be polymerized. N - (# - Hydroxyethyl)glycolamide is prepared by reacting glycolic acid with ethanolamine in xylene. N-(#-Hydroxyethyl)-6-hydroxycaproamide is prepared by reacting caprolactone with ethanolamine in chloroform.
Patent GB-1367925-A (GB)
Title: Active aluminium oxide and process fof producing same
IPC: C01F7/441
Filed: 1971-12-01
Abstract: 1367925 Dehydrating hydrangillite BAYER AG 1 Dec 1971 [5 Dec 1970] 56225/71 Heading C1A An active aluminium oxide which has a disturbed crystalline structure of X-aluminium oxide, a specific surface area of from 250 to 400 m<2>./g. according to BET, a residual water content of from 2 to 10% and a water absorption capacity at 50% relative atmospheric humidity of more than 10% is prepared by heating aluminium hydroxide (hydrangillite) to a temperature of from 350 C. to 800 C. with a residence time of from 0À1 to 2 seconds in a zone of high turbulence in a stream of hot gas which enters the zone at a temperature of from 500 C. to 1200 C., the stream of hot gas having a rate of inflow into the zone of from 30 to 150 m/ second. The turbulent zone may be contained in a conical reactor in which hot gas is injected tangentially at the narrow end and passes along a spiral path through the reactor, a portion of the gas stream returning in the axial direction. The aluminium hydroxide (hydrangillite) may be dried in a fluidized bed prior to entering the turbulent zone or may be injected directly into the return gas flow in the reactor.
Patent GB-1211694-A (GB)
Title: Derivatives of 7-aminocephalosporanic acid
Inventor: COWLEY B R
IPC: A23K20/195
Filed: 1966-12-15
Abstract: 1,211,694. Cephalosporins. GLAXO LABORATORIES Ltd. 4 Dec., 1967 [15 Dec., 1966], No. 56301/66. Heading C2A. [Also in Division A5] The invention comprises 7 - acylamido - 3 - methyl (or 3-substituted methyl)-ceph-3-em-4- carboxylic acids having an N-linked polyazole ring substituent on the acylamido group at the 7-position and/or on the methyl group at the 3-position, salts and esters thereof; and the corresponding 7-amino compounds. The polyazole ring contains at least three N atoms in the ring. Preferred are the 1-(7<SP>1</SP>-acylamido-4<SP>1</SP>-carboxyceph - 3<SP>1</SP> - em - 3<SP>1</SP> - yl methyl) - 1,2,3- triazoles and -1,2,3-triazolines and particularly triazolines of Formula III wherein R is H or acyl and the groups Y are cyano or methoxycarbonyl groups, e.g. 4,5- dimethoxycarbonyl-1-(4<SP>1</SP>- carboxy - 7<SP>1</SP> - phenylacetamido - ceph - 31 - em - 3<SP>1</SP>- yl methyl)- 1,2,3-thiazole; and salts and esters thereof. The compounds are prepared by reacting a dipolarophile with a cephalosporanic acid, salt or ester, the acid having the Formula II wherein R is H or acyl which may contain an azido group; and X is an acetoxy group, an azido group or H, at least one of R and X providing the compound of Formula II with at least one azido group, to obtain a compound having at least one polyazole ring substituent, whereafter, when R is H, the resulting compound may be acylated. The ester may be a diphenylmethyl, stannyl or silyl ester. The dipolarophiles are substances which react with groups having a dipole and may be classified as (a) acetylenic, i.e. of structure R<SP>1</SP>C#CR<SP>2</SP>, where R<SP>1</SP> and R<SP>2</SP> may be the same or differe group or atom, e.g. H, cyano, ester such methoxycarbonyl or acyl, e.g. benzoyl; (b) ethylenic, i.e. R<SP>5</SP>.R<SP>6</SP>C = CR<SP>7</SP>R<SP>8</SP>, wherein R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP> and R<SP>8</SP> may be the same or different and may be H, cyano, ester, e.g. methoxy carbonyl, acyl or carboxy; (c) cyano compounds other than those of (a) and (b) particularly cyanogen and alkoxy carbonyl cyanides. The azide and dipolarophile are reacted in an organic solvent at 15 to 150 C. A wide range of specific acyl groups for R of Formulµ II and III is listed. The silyl or stannyl ester group is removed by treatment with a compound containing active hydrogen, e.g. water, acidified or basified water, alcohols, phenols, ureas and amides. Specifications 1,012,943, 1,054,806, 1,082,943 and 1,082,962 are referred to.
Patent GB-1403798-A (GB)
Title: Apparatus for removing closures from bottles
IPC: B67B7/18
Filed: 1972-12-07
Abstract: 1403798 Uncapping bottles W RINK 7 Dec 1972 [18 Dec 1971] 56445/72 Headings B8T and B8C  An apparatus for the removal of screw threaded closures from bottles similar to that in Specification 1,253,798 has a housing 10 with head 15 that engages the neck of a bottle when the platform 1, 2 is lowered and spring 13 is compressed. The housing has a tubular member 16 surrounded by a diaphragm 17. The diaphragm has two sets of lugs 24 and 25 which protrude through perforations 22 and 23 respectively and are actuated by fluid pressure from a tube 21. The lugs 25 are designed to grip the neck of a bottle below the screw thread when fluid pressure is applied. Lugs 24 are at a height to grip closures that are unscrewed by the rotating mandrel 7. With a high fluid pressure the lugs grip the bottle necks and closures sufficiently for the platform 1, 2 to be raised and lift the bottles and closures from a bottle transport container. As the platform lifts, the mandrel withdraws from the closure under the action of the spring 13. The platform is then lowered to deposit the bottles in the position required. By reducing the fluid pressure to an intermediate level the grip of the lugs 25 is sufficiently reduced for the bottles to remain behind when the platform is again raised. The platform is then moved to the required position to release the closures. At this point fluid pressure is completely released and the lugs 24 allow the closures to drop out. The tubular member 16 may be omitted, Fig. 3 (not shown), and the lugs 24 and 25 combined into elongated lugs, Fig. 2 (not shown). The apparatus may be operated by an electropneumatic control system Fig. 4 (not shown).