baber/WOPTO huggingface dataset:
Patent GB-887314-A (GB)
Title: Polymerisation catalysts
Inventor: CHATT JOSEPH
IPC: C08F4/64
Filed: 1958-01-31
Abstract: A polymerization catalyst is prepared by treating (a) a compound of Group IVa-VIIa or VIII transition metal compound with (b) the reaction product of (i) a hydrocarbon compound of a Group I-III non-transition metal with (ii) the reaction product of CH2X2 (X=halogen) with Al.  The following ingredients are mentioned:-(a) Ti and V compounds, particularly TiCl3 or the Al-TiCl4 reaction product described in Specification 877,050; (i) Li, Zn or Al alkyls, preferably wherein the alkyl group has not more than 4 C atoms, particularly AlEt3; (ii) CH2Br2, which is reacted with Al activated by I.  The following features are preferred:-compound (ii) is preferably formed by reaction in presence of an ether, particularly diethyl ether; the catalyst is prepared in presence of a liquid hydrocarbon, e.g. petroleum ether and benzene.ALSO:Vinyl hydrocarbons, e.g. ethylene, propylene, butadiene and isoprene, are polymerized by use of a catalyst prepared by treating a transition metal compound (preferably of Ti or V, particularly TiCl3 or the Al-TiCl4 reaction product described in Specification 887,050) with the reaction product of (i) a Group 1-3 metal alkyl, e.g. AlEt3, with (ii) the reaction product of CH2X2 (X=halogen, preferably Br) and Al. Preferably the process is applied to the preparation of isotactic polypropylene, defined herein as at least 70% insoluble in heptane. The polymeric products are preferably purified by use of a hydroxy compound, e.g. water, steam, methanol or butanol.  In an example, polymerization was carried out in presence of petroleum ether, the polypropylene being 79,5% insoluble in ether.ALSO:Aluminium is reacted with methylene halides, e.g CH2Br2, to give compounds of formula (CH2AlX)n, wherein X is halogen and n is an integer. Specification 877,050 is referred to.
Patent GB-817607-A (GB)
Title: Filter bodies for the separation of minute suspended particles and a method of producing the same
IPC: B01D39/20
Filed: 1957-01-30
Abstract: 817,607. Gas filters. DEUTSCHE EDELSTAHLWERKE A. G. Jan. 30, 1957 [Feb. 21, 1956], No. 3331/57. Class 8(2). [Also in Group I] The entry face 2 of a gas filter body 1 of sintered metal e.g. bronze is rendered smooth e.g. by rolling or abrading or by spraying with metal followed by rolling or abrading whereby retained dust particles are readily removed during cleaning. The pore size of the smoothed surface is reduced by about 25 per cent.
Patent GB-700491-A (GB)
Title: Arrangement in air-blast electric circuit breakers provided with damping resistances
IPC: H01H33/867
Filed: 1952-02-08
Abstract: 700,491. Air-blast circuit-breakers. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 8, 1952 [Feb. 9, 1951], No. 3346/52. Class 38(5) A breaker comprises a fixed contact 3 and a tubular movable contact 6 which are bridged by a damping resistance 11 connected in circuit by a contact pair 14, 15 shortly after an exhaust valve 19, 20 is opened, and disconnected just before the valve is reclosed. The contacts are arranged in a compressed-gas container 1, contacts 6, 15 being mounted on pistons 8. 16, respectively, working in cylinders 9, 17. To open contacts 3, 6, a pushbutton 23 is pressed to de-energize a polarized relay 26 whose armature is forced up by a spring 27 so that a push rod 30 acts on a plate 33 to close the outlet from a valve 32 and to connect an air source 35 to a pipe 34. A piston 36 is thus raised and through a pivoted stem 40 changes over a disc valve 43, so that the space to the right of piston 16 is opened to atmosphere over pipe 45, and pipe 44 is closed. Thus air from the container flowing to the left-hand face of piston 16 through channels 53 causes the piston to move to the right. At the same time as the piston 36 moves up, a cylinder 46 is connected to the pipe 34 over a needle valve 57, and a valve 48 is changed over to close a second vent from pipe 44 and to open the space to the-left of piston 8 to atmosphere over a pipe 52. The piston 8 is thus moved to the left by the gas in container 1 and the arc between the contacts is blown out through the tubular contact 6, the blast exhausting through the valve 19, 20 which opens when the piston 16 is moved to the right to close the contacts 14, 15. After a certain time, a piston 58 is moved to the left by the pressure in cylinder 46 and deflects the stem 40 to the left against a spring 60, thereby allowing valve 43 to be moved back to the position shown by a spring 61 and connect the pipe 44 to the right-hand side of piston 16 so as to open the contacts 14, 15 and close valve 19, 20, the movement of the piston being delayed by the passage of air through channels 53, so that any arc formed can be extinguished by a blast through contact 15, openings 62 and the valve 19, 20. The breaker is reclosed by pressing a push-button 23<SP>1</SP> to energize a coil 63 and lift a valve 66 so as to connect the source 35 to a cylinder 28 over a pipe 67. The rod 30 is thus lowered. to allow a spring 311 to restore valve 33 to vent the lower side of piston 36, cylinder 46 and pipe 47 being vented first through pipe 34 and then through the space around stem 40. The breaker may have two main gaps each with a damping resistance, in which case the contact tube 15 has a forked end so as to co-operate with two contacts 14.
Patent GB-209312-A (GB)
Title: Centrifugal separator
IPC: B03B9/04
Filed: 1923-02-05
Abstract: 209,312. Arpin, J. B. Feb. 5, 1923. Density separators.-Lump materials of different densities, for example, coke and clinkers in ashes, are separated in a centrifugal machine with the aid of water. The ashes are fed into a rotary sieve 12, having a portion 14 of coarse mesh delivering by way of a funnel 16, which receives also a stream of water from a pipe 17, into a rotating separator 18 of the conical form shown. At its upper edge the separator carries a flange 30 adapted to deliver the lighter constituents, which are not carried downwards by the stream of water, against a fixed guard-plate 35, from which they fall upon a rotating platform 37, a scraper 45 forcing them into a box 47 and shoot 48. The heavier constituents are delivered with the water through a pipe 52, the rate of the downward movement of the water being controlled by a valve 54.
Patent GB-948213-A (GB)
Title: Guiding device for wire or metal strip in a heat-treatment line
IPC: C23C2/36
Filed: 1962-01-29
Abstract: <PICT:0948213/C3/1> A device for guiding metal wire or strip between two inclined rectilinear paths comprises an airtight box 1 containing a rotatable pulley 34, a tube extension 22 forming an inlet guide leading the wire 27 into the peripheral groove in the pulley, an exit guide 43 leading the wire from the pulley, and guide plates 42 located on either side of the pulley and extending between the inlet and exit guides.  The inlet guide 22 is connected via flanges 24 to a furnace 26 and the exit opening 28 united to a frusto-conical junction piece 29 is joined via flanges 30, 31 to the entrance 32 of another furnace.  The peripheral groove in pulley 34 is arranged tangentially to the axes of 22 and 32 and the guide plates 42 are connected to the guide bracket 43 one flange of which is applied against the end wall of the box 1 and the other flange which is bevelled extends to adjacent the pulley rim. An aperture 8 in the box is closed by a removable cover 10 and several of the devices may be arranged side by side. In one application steel wire may be directed from the box into an aluminium coating bath, a reducing atmosphere being maintained in the box.
Patent GB-410279-A (GB)
Title: Improvements in electric toasters
IPC: A47J37/08
Filed: 1933-02-03
Abstract: 410,279. Toasting-apparatus; timing-apparatus for controlling toasting. LANDERS, FRARY, & CLARK, 47, Center Street, New Britain, Connecticut, U.S.A. Feb. 3, 1933, No. 3405. Convention date, Feb. 11, 1932. [Class 28 (i).] An electric toaster comprises an oven, a toast rack 45, 46 having spaced holders open at the top, and time-controlled means T for latching the rack in upright operative position within the oven, the rack being pivoted on a transverse horizontal line a substantial distance beneath the rear end of the oven for swinging about the pivot under the force of gravity downwardly and forwardly to an inoperative loading position where the holders are substantially out of the oven and the open ends of the holders face upwardly and forwardly. The toaster shown comprises a base 10, a transversely extending supporting plate 11 having a shelf portion 12 between its ends and side plates extending forwardly therefrom. The oven is constituted by the shelf 12, the upper portions of the supporting plate and the side plates, and a cover 24. The oven is divided into a number of parallel spaced compartments to receive the spaced holders by electric heating units 25, 26. The toast rack comprises frame members 45, 46 closing the front and bottom of the oven when the rack is in upright operative position and carrying the toast holders, each toast holder consisting of a metal strip 48 bent into open rectangular shape and having on each side a pair of crossed guard wires 52, 53. The rack is supported by a pair of hinge-plates 60 pivoted on studs 61 secured to the plate 11 near the lower edge thereof. The plates 60 have extensions 64 behind the plate 11 and the downward and opening movement of the toast rack is limited by a stop-bracket 66 engaging a stoppin 65 on these extensions ; an adjustable spring 68 serves to brake the movement. The toast rack is latched in upright operative position by means of a grooved stud 83 carried by the toast rack engaging the release-lever 81 of the time-controlled mechanism T. The time-controlled mechanism T, which may be of any suitable type, is housed between the plate 11 and the back panel 17 of the apparatus and includes a lever 96 for winding the clock mechanism, a lever 80 for adjusting the timing, and an actuated arm 79 which when released by the timing-mechanism moves to operate the lever 81 to release the toast rack. The lever 81 may extend outside the device so that the operator may release the rack at any time irrespective of the timing-mechanism.
Patent GB-833217-A (GB)
Title: Improvements in or relating to the bottling of pressurized liquids
IPC: B65B3/32
Filed: 1956-02-03
Abstract: 833,217. Filling containers with liquid. AERATOM A. G. Feb. 3, 1956 [Feb. 4, 1955], No. 3412/56. Class 125(2). [Also in Group XXVIII] A pumping system for charging containers with liquid which boils at atmospheric pressure comprises a pump 1, having a piston actuated in one direction by the incoming liquid and in the other by air pressure, which feeds a similar metering pump 10 with liquid at a pressure such that no evaporation can occur. The pump 10 carries a filling head 25, including a non- return valve, arranged to receive the valve stem 29 of an aerosol container 30 which is placed on a table 31 and raised by an air actuated piston 33. The valve 35 controlling the table motor is hand actuated and a foot actuated valve controls the alternate operation of the pump motors. The stroke of the metering pump piston is adjustable.
Patent GB-762291-A (GB)
Title: Improvements in reciprocating hydraulic pump installations
Filed: 1954-02-05
Abstract: 762,291. Pistons. GRATZMULLER, J. L. Feb. 5, 1954 [Feb. 5, 1953; Oct. 26, 1953], No. 3455/54. Class 122 (1). [Also in Group XXVIII] The subject-matter of this Specification includes that described in Specification 762,290, but, in addition, the pump piston 21 is provided with a second groove 52a which is connected to a source of lubricant under a pressure that is greater than the pressure existing in the groove 52 which is connected by a pipe 58, separate from the pump inlet pipe, to the suction reservoir 57. This pressure may be obtained by connecting the passage 102 to an elevated reservoir. The pump piston above the groove 52a does not engage the cylinder walls. Specification 762,350, [Group XXVIII], also is referred to.
Patent GB-175267-A (GB)
Title: Improvements in mops
IPC: A47L13/253
Filed: 1922-02-07
Abstract: 175,267. Bonsall, T. L. Feb. 7, 1921, [Convention date]. Swivelling handles; fixing by sockets of special forms; handles with clamping retaining-devices for mops.-A mop comprises a pair of overlapping frame members 11, 12 hingedly connected together and to the handle by a pin 13 and detachably carrying the mop cloth by their hook-shaped outer ends. The mop cloth is formed with enlargements 17 at its ends which are inserted endways into the hocked ends 14 of the frames. The frames are held in position with the cloth in tension by the engagement of the projections 27 on the inner frame with the sides of the outer frame, the parts being automatically engaged by depressing the frame members. The handle socket is formed by sheet-metal semicircular portions 29 having flanges 30 looped round the pin 13. The flanges are connected together by bending over the lugs 31 or by welding or riveting.
Patent GB-1271065-A (GB)
Title: A food toasting device
Inventor: BELL KENNETH WILLIAM GEORGE
IPC: A47J37/06
Filed: 1970-01-24
Abstract: 1,271,065. Toasting rack. K. W. G. BELL. Dec.29, 1970 [Jan 24, 1970], No.3527/70. Heading A4D. Food to be toasted is held in a U-shaped rack attached to the grill of a gas fire by hooks 5, 6. The face of the rack adjacent to the fire is open. The rack may be formed in wire, preferably stainless steel and may have a base 13 in the form of a plate or wire grid. The handle 12 extends from one side of the rack and may be sheathed in heat insulating material. The hooks and handle may be detachable. Hooks may be formed on both faces of the rack so that it may be reversed.
Patent GB-796709-A (GB)
Title: Improvements in or relating to pentaerythritol tetranitrate
Inventor: GOW ROBERT STEWART
IPC: C07C203/04
Filed: 1956-02-06
Abstract: Pentaerythritol tetranitrate is treated to give the discrete particles thereof a coating of at least one water-soluble, non-ionic surface-active agent, for example a polyoxyethylene derivative of at least one higher fatty alcohol, acid amide, alkyl phenol or carboxylic acid containing at least 6 carbon atoms, and in which derivative there is a chain of at least 3 ethyleneoxy groups. The preferred polyoxyethylene derivative is the condensation product of an alkyl phenol with ethylene oxide.  The quantity of wetting agent can be from 0.0004 to 0.05 per cent, preferably 0.0008 to 0.0025 per cent based on the weight of dry pentaerythritol tetranitrate.  The treatment increases the conductivity and improves the free-flowing properties of the material without affecting its stability and impact and friction sensitivity.  In examples, pentaerythritol tetranitrate is mixed with aqueous solutions of a condensation product of a p-octyl phenol with 8-10 mols. of ethylene oxide, a condensation product of a stearic acid ester of hexitol anhydride and ethylene oxide, a condensation product of a fatty acid and/or rosin acid and ethylene oxide or a condensation product of mixed fatty acid amides and ethylene oxide, filtered off and dried.
Patent GB-1447414-A (GB)
Title: Resistor compositions
IPC: H01B1/08
Filed: 1974-01-25
Abstract: 1447414 Polynary oxides E I DU PONT DE NEMOURS & CO 25 Jan 1974 [26 Jan 1973] 03657/74 Heading C1A Electrically conductive polynary oxides of pyroohlore-related crystal structure have the formula M x M<SP>1</SP> 2-x M<SP>11</SP> 2 O 7-z , wherein M is at least one of silver or copper; M<SP>1</SP> is bismuth or a mixture of at least one half bismuth plus up to one half of one or more cations from among bivalent cadmium and lead and trivalent yttrium, thallium, indium and the lanthanides; M<SP>11</SP> is at least one of ruthenium and indium, or a mixture of at least three-fourths of at least one of ruthenium and iridium with up to one-fourth of at least one of platinum, titanium and rhodium; x is in the range 0À10 to 0À60; and z is in the range 0À10 to 0À95 and is equal to the sum of the number of monovalent Ag and/or Cu cations and half the number of divalent cations. The polynary oxide, which is preferably one of the compounds Ag 0À5 Bi 1À5 Ru 2 O 6À5 , Ag 0À5 Gd 0À75 Bi 0À75 Ru 2 - O 6À5 , Ag 0À5 Gd 0À5 BiRu 2 O 6À5  and Cu 0À5 Bi 1À5 Ru 2 O 6À5 , may be mixed with a dielectric material, preferably in the proportion of 5 to 90 wt. per cent polynary oxide and 95 to 10 wt. per cent dielectric material, to form a powder composition which may optionally also contain up to 10 wt. per cent of a binary oxide (e.g. CdO, V 2 O 5 , Cr 2 O 3 , Mn 2 O 3 , Fe 3 O 4 , Co 3 O 4 , NiO or CuO) and/or up to 69 wt. per cent of a noble metal. This powder composition, which preferably has an average particle size of less than 20 Á, may be dispersed in an inert liquid vehicle for application (e.g. by screen printing) to a dielectric substrate and subsequent firing, to produce an electrical resistor.
Patent GB-1412723-A (GB)
Title: Electric safety fuse monitoring devices
IPC: H01H85/30
Filed: 1974-01-25
Abstract: 1412723 Switches actuated by direct explosion SIEMENS AG 25 Jan 1974 [26 Jan 1973] 03687/74 Heading H1N A switch device for monitoring a fuse comprises an insulating support 1 Fig. 2 carrying a percussion cartridge 4 connected to the fuse as by leads 12 and having a percussion pin 7 directed towards the actuator 8 of a switch 5 through an aperture 6 of a wall portion 3 of the support. The switch is connected by leads 13 to an indicating or control circuit. The support may be secured by a single screw in an aperture 14 and is additionally located by a stud 15 engageable in a recess 16.
Patent GB-825008-A (GB)
Title: Improvements in regulated electric feed systems for supplying rectified current
IPC: G05F1/32
Filed: 1956-02-06
Abstract: 825,008. Rectifying; automatic voltage regulators. SOC. D'APPLICATION GENERALE D'ELECTRO-MATERIEL STANDARD. Feb. 6, 1956 [Feb. 5, 1955], No. 3707/56. Classes 38 (2) and 38 (4). To keep the output voltage of rectifier 8 constant in spite of variations in value of the alternating supply voltage and D.C. taken by load 6, a saturable choke 7 is connected between terminal 1 of A.C. supply 3 and rectifier 8, and saturable chokes 11, 13 are connected in series with oppositely poled rectifiers 12, 14 between the junction of choke 7 and rectifier 8 and the other terminal 2 of A.C. supply 3. The values of chokes 11, 13 may be controlled by D.C. in windings 15, 16 which may be derived from the output terminals through a servo-mechanism. The application of the invention to a threephase bridge circuit is also described (Fig. 2, not shown).
Patent GB-175276-A (GB)
Title: Improved operating means for the brakes of motor-vehicle steering wheels
IPC: B60T11/04
Filed: 1922-02-08
Abstract: 175,276. Hersot, L. Feb. 11, 1921, [Convention date]. Flexible transmitters.-A flexible cable acting by torsion is used for operating the brakes on the steering-wheels of motor and other vehicles. The cable 22 has a connecting-member 12 which may be integral with, or, as shown, may be jointed at 11 to the cam 5 for operating the brake blocks 4 pivoted at 7 to the member 6 secured to the stub axle. The other end of the cable 22 has a connecting-member 15 rotatably and slidably mounted in a bearing 17 on the axle 18 and is provided with the operating-farm 19. The adjacent members 15 for the two wheels may receive a rod 20 with the interposition of springs 21. The arms 19 may be actuated through means for equalizing the braking-force applied to the two wheels.
Patent GB-1409986-A (GB)
Title: Freeze-drying process and apparatus
IPC: F26B5/06
Filed: 1974-01-28
Abstract: 1409986 Freeze-drying NESTLE SA 28 Jan 1974 [5 Feb 1973] 03842/74 Heading F4G The invention relates to a process and apparatus for freeze-drying. The apparatus comprises means, e.g. a screw conveyor 5, for continuously feeding frozen product as from a hopper 4 into a drying chamber 1 held at subatmospherie pressure and means, e.g. a diaphragm guage 11, for measuring the pressure at at least one point within the chamber 1. Means, e.g. a controller 12, is provided for controlling the feed rate of the feeding means as a function of the pressure measured by the pressure measuring means. As shown the controller 12 controls the speed of a motor M driving the screw-conveyer. An upper speed limit for the motor is set in the controller 12 so that the screw conveyer 5 is not rotated at too high a speed in the case of a product supply failure. The product is fed through the chamber on a heated vibrating conveyer 8 into a discharge hopper 9. Inlet and outlet vacuum locks 3, 10 are provided.
Patent GB-824978-A (GB)
Title: Improvements in sulphonamides
Inventor: MACRAE FLORENCE JUNE
IPC: C07D285/135
Filed: 1957-02-05
Abstract: The invention comprises sulphonamides of the general formula <FORM:0824978/IV (b)/1> wherein X is a halogen atom and R is an alkyl group preferably containing 3-6 carbon atoms, and their preparation by treating a 2-alkyl-5-amino - 1:3:4 - thiadiazole with a reactive derivative of a p-halogenobenzenesulphonic acid such as a halide or ester. Suitably a phalogenobenzene sulphonyl halide such as the chloride is used in the presence of an acid-binding agent such as pyridine. In an example, the preparation of 2-n-butyl-5-p-chlorobenzenesulphonamido-thiadiazole and the corresponding 2-n-propyl-, isopropyl-, sec.-butyl-, tert.butyl- and n-hexyl-derivatives is described.  Specification 811,522 is referred to.ALSO:Sulphonamides of the formula <FORM:0824978/VI/1> where X is a halogen atom and R is an alkyl group (see Group IV (b)) are stated to have a hypoglycaemic action.  For test purposes the drugs, for example 5-p-chlorobenzenesulphonamido - 2 - n - butyl - 1 : 3 : 4 - thiadiazole and its 2-tert-butyl and 2-n-hexyl analogues are administered orally to rabbits in suspension in gum acacia. Specification 811,522 is referred to.
Patent GB-123534-A (GB)
Title: Improvements relating to Fillings for Tanks or the like Intended for the Storage of Acetylene or other Gas.
Inventor: SAERNMARK AXEL UNO
IPC: B28B1/52
Filed: 1919-02-17
Abstract: 123,534. Sõrnmark, A. U. Feb. 17, 1919. Explosions, preventing in receptacles for inflammable liquids and explosives.-In a method of preventing explosions in vessels for storing compressed acetylene or other gas by the use of a porous filling for the interior of such vessels. the filling, which may consist of ceramic or other porous material, is reinforced by an admixture of loose strands of iron or other metal wire of short length and evenly distributed throughout the mass, the strands being straight or only slightly bent and separate from each other without entanglement. The mass may be introduced into the vessels in a plastic state, or may first be made into briquettes or slabs. Reference has been directed by the Comptroller to Specification 23856/10. [Class 8 (ii), Air and gases, Treating &c.].
Patent GB-568410-A (GB)
Title: Improvements relating to remote control installations
IPC: H02J13/00
Filed: 1943-03-11
Abstract: 568,410. Signalling over power circuits. LANDIS & GYR SOC. ANON. March 11, 1943, No. 3952. Convention date, March 16, 1942. Drawings to Specification. [Class 40 (iv)] In a system in which certain signals over a power network consist of simple impulses of one or other of two frequencies, e.g. for switching street lamps on and off and other signals are given by currents of a third frequency which control a selective system, blocking networks to confine the signalling currents to the appropriate parts of the network are tuned with the aid of the selective system to the conditions in which they block the on/off signals and automatically resume the condition in which they block the signals of the selective system after a time interval.