baber/WOPTO huggingface dataset:
Patent GB-1446874-A (GB)
Title: Electric switch assemblies
IPC: H01H13/02
Filed: 1973-08-14
Abstract: 1446874 Mechanical switches; retractive switches LUCERNE PRODUCTS Inc 14 Aug 1973 [14 Aug 1972] 39521/73 Heading H1N A trigger switch assembly 12, Fig. 1, for an electric power tool, comprises a module 14 having two sections 32, 32a, Fig. 5, of a split casing 28 for containing electrical components of a speed control circuit with each section having an upper elongate surface for mounting respective outwardly facing sets of stationary contacts 36, 36a, 36b and 38, 38a which cooperate with bridging contact pieces 40 rectilinearly moved by the trigger in a known manner. The respective upper surfaces of the module sections are also provided with transversely arranged cam abutments 46, 46a which engage with fingers 50 projecting interiorly from opposing side walls of a plastics wrap-around housing 25 for accurately locating the module when it is inserted, and within which housing the module is retained in a releasable snap-fit manner by projections 30 which engage in holes 33 in the opposing side walls of the resilient lower part of the housing 25. The cam abutments 46, 46a can be of different configurations (Figs. 2 and 3, not shown) with the shapes being suitable for accurate engagement of their outer ends with the fingers 50 so as to enable proper alignment and operation of the trigger switch contacts to be obtained. The section 32 of the split casing module is made of ceramic and the section 32a of plastics material.
Patent GB-818978-A (GB)
Title: Color improvement of petroleum lubricating oils
IPC: C10G71/00
Filed: 1957-12-20
Abstract: A process for improving the colour of non-hydrofined petroleum lubricating oils (viscosity at least 35 S.U.S./210 DEG  F.) comprises first treating the oil with an aqueous alkaline earth or alkali metal hydroxide, separating the treated oil, and subsequently hydrofining the oil in the presence of a hydrofining catalyst. Lubricating oils mentioned are distillates falling within the range of 625 DEG  to 1150 DEG  F. and higher boiling fractions recovered by deasphalting residue.  They may have viscosities of 35 to 180 S.U.S./210 DEG  F. Hydroxides mentioned are those of sodium, potassium and calcium.  The concentration of the hydroxide in the water may be 10 to 60 wt. per cent, e.g. 40 DEG  B<\>ae alkali on a 10 wt. per cent lime slurry. The oil may be first contacted with the aqueous hydroxide at 300 DEG F. and the mixture heated to 700 DEG  F. at 1 atmosphere, the time of contact above 600 DEG  F. being 30 to 120 seconds.  The hydrofining conditions may be 500-750 DEG  F.; 100-1500 p.s.i.g.; 0.25-5 V/V/Hr.; and 100-3500 S.C.F./Bbl. (H2 supplied) and 10-1000 S.C.F./Bbl. (H2 consumed). Catalysts mentioned are molybdenum oxide, with or without cobalt oxide, on activated alumina and nickel tungsten sulphide.  In the example a raw lubricating oil distillate (38.8 S.U.S./10 DEG  F.) was redistilled over a slurry containing 8 parts lie and 92 parts water by weight (4 times the theoretical to neutralize the oil acids).  After the water had distilled the oil was distilled at a pressure below 1 mm.  Two portions (i) and (ii) of the oil were then hydrofined over cobalt molybdate at 800 p.s.i.g., 800 S.C.F.H2/Bbl., (i) 650 DEG  F. and (ii) 575 DEG  F., and 1 V./V./hr.
Patent GB-953437-A (GB)
Title: Reversing mechanism for one-way ploughs
IPC: A01B3/42
Filed: 1960-11-18
Abstract: 953,437. Agricultural implements. J. GASSNER, J. GASSNER Jun., and B. GASSNER. Nov. 18, 1960 [Nov. 18, 1959; Dec. 31, 1959], No. 39789/60. Heading A1B. A one-way plough attached to the lift linkage of a tractor and comprising plough beams rotatable about a longitudinal axis is characterized in that the centre of gravity of the plough is not located on the longitudinal axis and when the plough is in its working position the centre of gravity can be raised into a position above the axis so that when the plough is raised it will rotate under gravity to a position where its centre of gravity is below the longitudinal axis. As shown a hollow rotatable shaft 23 is mounted in a structure 1 and the plough beam 26 is hinged on a pin 24. A freely rotatable ring 29 is provided with an abutment 30 which cooperates with abutments 31, 32 on the shaft 23. When the plough is raised by the tractor linkage the angular position of the beam 26 causes the plough beams to rotate under gravity. The ring 29 takes up a position as shown in Fig. 12. The plough is lowered until the plough beams contact the ground. The linkage is lowered still further and causes the beam 26 to be raised to the position shown in Fig. 9. When the ring 29 reaches the position shown in Fig. 9 the abutment 30 engages the abutment 32 locking the plough in position. Various other embodiments are described and a hydraulic dashpot may be used to retard the rotation of the plough beam.
Patent GB-1480036-A (GB)
Title: Level regulator for a frequency division multiplex transmission system
IPC: H04B3/10
Filed: 1975-09-30
Abstract: 1480036 Automatic level control COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 30 Sept 1975 [8 Oct 1974] 39928/75 Heading H4R The level of a multiplex transmission group G 1  is regulated by generating 2 a digital representation of the sampled 1 group, extracting in digital filter 3 the pilot which accompanies the group, generating 4 a function of the pilot level over a number of sampling periods (e.g. the mean or mean square value), and comparing the function with a reference 6 to produce a control signal C 1  to adjust the gain of a network a 1 . As shown, a plurality of groups G 1  to G n  are regulated in sucession and the reference 6 may include different values for different groups. In a modification (Fig. 2) the groups are transposed to a lower frequency and analogue filtered before being sampled. The network gains are controlled by switched resistors.
Patent GB-1172755-A (GB)
Title: Improvements in or relating to Dense Alloys.
Inventor: DAVIS ANTHONY JOHN
IPC: C22C1/04
Filed: 1967-08-31
Abstract: 1,172,755. Tungsten alloys; powder metallurgy. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. Aug.23, 1968 [Aug. 31, 1967], No.39964/67. Headings C7A and C7D. A dense alloy consists, in per cent by weight, of The alloy is made by compacting powder (1-5 microns in size) at 5-15 t. s. i. and sintering in hydrogen at 1400‹-1500‹C. for “-5 hours. After sintering, the alloy body is either slowly cooled (in the furnace) to 800‹-900‹C. and then cooled to room temperature more rapidly or quenched from sintering temperature and then heat-treated at 900‹-1250‹C. for 1 hour in hydrogen.
Patent GB-998362-A (GB)
Title: Air distribution unit
IPC: F24F13/062
Filed: 1962-10-23
Abstract: 998,362. Ventilators. ALLIED THERMAL CORPORATION. Oct. 23, 1962 [March 29, 1962], No. 40043/62. Heading F4V. An air distributing unit for delivering air from a duct 1 to an enclosure has a rectangular cross-section casing comprising a collar 2 fitting into the duct 1 and walls 3 flared towards a perforated plate 8, flanges 7 of which abut a wall or ceiling 5, and inner and outer sets of angularly adjustable air-directing vanes, the projected area of the vanes and their supporting members on the perforated plate 8 being greater than the cross-sectional area of the air inlet 2. As illustrated, the vane support comprises diverging wire legs 12, 13, 16 and 17 welded to the flared walls 3 and secured to a support member 9. Four inner trapezial vanes 22, 23, 24, 25 are provided with hinge members 34-37, 50 and 51 integral with or attached to the vanes which pivot on L-shaped wire members 38, 41, 44 and 47 secured to the wire legs. An outer set of trapezial vanes 52- 55 are pivotally supported in the same manner on the wire legs. The air deflecting vanes may thus be set to give a desired pattern of air flow from the unit. In modifications, Figs. 3-7 (not shown), the unit is square or rectangular, the inner set of vanes are integral with the support member and slots are provided along the join at which the vanes are bent to the required position, and the inner and outer vanes are formed integrally with tabs mounted on the wire legs so that they may be similarly bent to the required positions.
Patent GB-1396145-A (GB)
Title: Pulverised fuel delivery method and system for a blast furnace
IPC: C21B5/00
Filed: 1972-08-29
Abstract: 1396145 Automatic process control BABCOCK & WILCOX CO 29 Aug 1972 40058/72 Heading G3R [Also in Division F4] A system for feeding pulverized fuel to the tuyeres 41 of a blast furnace, comprises three tanks 31 A-C, which are connected in turn to a conduit 33 supplied with compressed air to deliver pulverized fuel to the tuyeres in accordance with the quantity of hot blast fed to the furnace. The tanks 31 A-C are fed from a storage tank 23, receiving pulverized coal and fires from a cyclone 17 and filter 27. A pulverizer 14 is fed with coal from a hopper 11 and hot combustion gases from a chamber 16. A feeder 12 between the hopper 11 and pulverizer 14 is controlled to maintain a required weight of coal in the bins 31 A-C and 23, and the air supply to chamber 16 is controlled in correspondence to the coal-feed. Signals from load cells corresponding to all the tanks 31 A-C and 23 are summed and the signals representing the weights in tanks 31 A-C are differentiated so that a polarity discriminator enables the state of the tanks to be determined. The required flow of coal through the system is determined in accordance with the rate of flow of air through the bustle pipe 51 feeding the blast furnace tuyeres, and a coal demand signal is compared with a signal from the polarity discriminator representing the flow of coal from the system and the datum used to determine a pressure to be maintained in the tanks 31 A-C feeding the furnace. Each tank 31  A-C is pressurized with inert gas from a source 50 to supply fuel to the line 33, maintained under pressure while full of coal as a standby, or connected to the supply tank 23 to be refilled. Pressure equalization valves 55 A, B, C between the tanks 31 A-C and tank 23, coal outlet valves 35 A, B, C and coal inlet valves 32 A, B, C are controlled by a device receiving weight signals from the tanks 31A-C so that, on reaching a minimum weight content of coal, the tank in use is disconnected from the pressurizing supply and the furnace coal feed line 33, and connected to the reserve tank 23 to be refilled, and the full tank, which is already under pressure is connected to the coal feed line 33. The tanks 31 A-C should be refilled at a greater rate than the maximum coal output rate, so that the tank being refilled is disconnected from the reserve tank 23 and brought to pressure before the tank then connected to the pressure is empty. The flow of carrier air in the line 33 is controlled in accordance with the coal demand rate derived from the air flow in the bustle pipe. Inert gas is fed to the reserve tank 23 and tanks 31 A-C to maintain the coal in a fluidised state during storage.
Patent GB-866359-A (GB)
Title: Improvements in or relating to composite pigments
Inventor: FURNESS WALTER
IPC: C09C1/04
Filed: 1957-12-24
Abstract: Composite pigments comprise zinc oxide and zinc titanate in proportions such that the ratio of titanium to the whole of the zinc in the pigment is between 2% and 10% by weight.  The preferred ratio is from 2% to 4%.  The pigment may be prepared by reacting an aqueous acidic solution of a tetravalent titanium compound with a suspension of zinc oxide or hydrated zinc oxide so as to precipitate titanium dioxide and calcining the composite precipitate.  The zinc oxide suspension may be replaced by the zinc compound obtained by the process of Specification 838,851 containing the elements which are present in zinc oxide, sulphur trioxide, ammonia and water. Specification 426,881 also is referred to.
Patent GB-958384-A (GB)
Title: A drill bit and method of brazing a cutting insert in a slot formed in the working end of a drill bit body
IPC: E21B10/58
Filed: 1960-11-22
Abstract: 958,384. Making drills; brazing. TIMKEN ROLLER BEARING CO. Nov. 22, 1960 [March 21, 1960], No. 40081/60. Headings B3A, B3C and B3R. In making a drill bit a cutting insert is brazed into a recess in a bit body. A bar is upset and machined to form a head 11, Fig. 1, with a threaded shank, a fluid passageway 18 opening to the bit face and four slots 22 each having an end wall 23 and inwardly tapering side walls 25 and with fingers 30, Fig. 5, extending outwardly from the edges of the slots. The bit and tungsten carbide inserts 35, Fig. 5, are cleaned, the slots and inserts are fluxed, the inserts are placed in the slots and fingers 30 are pressed against the inserts by an hydraulic press. The assembly is furnace or induction heated to brazing temperature and inverted, in a furnace, into a ceramic cup 64, Fig. 7, containing molten brazing metal which flows by capillarity between the inserts and slot walls. The bit may be of the tapered separable or of the integral type and a single insert may be employed.
Patent GB-1242474-A (GB)
Title: Improvements in or relating to field effect transistors
IPC: H01L29/00
Filed: 1969-08-12
Abstract: 1,242,474. Semi-conductor devices. SIEMENS A.G. 12 Aug., 1969 [13 Aug., 1968], No. 40167/69. Heading H1K. In an IGFET the insulating layer under the control electrode 6 comprises a plurality of sub-layers, that sub-layer 711 nearest the control electrode consisting of silicon nitride and that sub-layer nearest the surface of the semiconductor material 1 consisting of silicon dioxide, the silicon dioxide sub-layer being free from doping materials in a zone 7 adjacent the surface of the semi-conductor material but being doped in a zone 7<SP>1</SP> adjacent the silicon nitride sub-layer with a material such as phosphorus, titanium, or boron which inhibits the mobility of free charge carriers in the layers. The sublayers are preferably produced by pyrolysis. An IGFET with two separate gate electrodes insulated in this way is also described.
Patent GB-1369365-A (GB)
Title: Device for adapting the lengths of a pair of legs for example those of a ladder to unevenness of a supporting surface
IPC: A47B91/00
Filed: 1972-08-31
Abstract: 1369365 Furniture feet W STURM 31 Aug 1972 [10 Feb 1972] 40312/72 Heading A4H [Also in Division E1] A device for adapting furniture legs to an uneven surface comprises a U-shaped tubular member 9 having a pair of extension legs 1 telescopically received in end portions 3 thereof, the extension legs 1 being inter-connected through the tubular member 9 by an elongate, flexible, incompressible element 6 having a plurality of longitudinally spaced recesses, e.g. a steel wire 4 having steel beads 5 threaded thereon, whereby when the device is placed on an uneven surface, upward movement of one leg 1 causes downward movement of the other leg until both legs contact the surface, whereafter pressure on both legs causes the flexible element 6 to bulge at a widened central portion 14 of the tubular member 9 provided with projections 15 which engage the recesses of the element 6. The projections 15 may comprise pins, as shown, or serrations on the inner wall of the tubular member 9. Movement of the legs 1 is limited by shoulders thereon engaging shoulders in the end portions 3. The tubular member 9 may be flexible on each side of the central portion to allow for attachment to furniture of varying leg spacing.
Patent GB-1387226-A (GB)
Title: Valve system
IPC: F16K1/30
Filed: 1973-08-28
Abstract: 1387226 Valves MESSER GRIESHEIM GmbH 28 Aug 1973 [16 Dec 1972] 40534/73 Heading F2V A valve system for preventing the complete emptying of a gas cylinder comprises a flexible disc 72 which seats against a disc 62 to prevent further flow when the pressure in a channel 50 from the cylinder has fallen to a predetermined value, flow normally taking place via apertures 70 in a second flexible disc 60 and apertures 76 in the disc 62. When it is required to re-charge the cylinder, gas under pressure supplied to the bore 12 passes through the central aperture 68 in the disc 72 and the central aperture 74 in the disc 62, lifts the flexible disc 60 off its seating and flows via apertures 70 to the channel 50. Discs 60 and 72 may be made of rubber and disc 62 of steel. The discs are retained by a pressedin steel ring 64.
Patent GB-1055438-A (GB)
Title: Improvements in and relating to rotary rake-head haymakers
IPC: A01D78/10
Filed: 1963-10-15
Abstract: 1,055,438. Haymaking machines. MASCHINEN FABRIK FAHR A.G. Oct. 15, 1963 [Oct. 17, 1962], No. 40721/63. Heading A1F. In a haymaking machine comprising a number of pairs of positively driven rake heads rotating about vertical axes, adjacent pairs of rake-heads are offset in the direction of travel as shown in the Figure whereby by rotating the centre heads 7, 8 in the direction of arrows 27 and the outer heads in the direction of arrows 26 only two swaths may be formed from the three pairs of heads. Gear boxes 3, 9 and 12 and frame members 4, 11 and 20 are arranged so that the pairs of heads may be tilted independently of the other pairs. A ground wheel 43 is associated with each rake head. In an embodiment the outer pairs of heads are mounted on a beam separate from that of the centre pair of heads and connected thereto by two bars arranged so that adjustment of the inclination of the centre rake-heads automatically adjusts the inclinations of the outer rake heads. In this case the drive connection between the centre and outer heads is direct by means of a universally pivoted telescopic shaft. In a further embodiment the outer heads are carried on trailing arms pivoted to extensions of the frame beam 4.
Patent GB-1015679-A (GB)
Title: Crankshaft for 60íÒ-w type twenty-four cylinder engine
Inventor: OKAMURA KENJI
IPC: F16F15/24
Filed: 1962-10-29
Abstract: 1,015,679. Crank-shafts. MITSUBISHI NIPPON JUKOGYO KABUSHIK-KAISHA. Oct. 29, 1962, No. 40734/62. Heading F2U. Primary rocking couplers in an eight-throw crank-shaft for a 60-degrees W-type twentyfour-cylinder engine are balanced as follows. The crank-shaft is considered as two aligned halves. In the front half 20f, throws 1, 3, 4 and 2 are spaced 90 degrees. The throws (5 to 8) of the rear half 20r are identically spaced but in reverse order back to front (i.e. 8, 6, 5 and 7), and throw No. 8 is 45 degrees behind throw No. 1. The rocking couple resulting from each of these individual halves 20f, 20r is shown in Fig. 5 as Oa and Ob respectively and its resultant Oc is only 14À18% of the individual rocking couples. It could be balanced by small masses attached to the two end throws (Fig. 6, not shown) but it is preferred to add still smaller masses 35 as shown in Fig. 8, thus still further reducing internal inertia forces in the shaft.
Patent GB-894954-A (GB)
Title: Improvements in or relating to neckties
IPC: A41D25/00
Filed: 1960-11-30
Abstract: 894,954. Neckties. PICK, A., PICK, jun., H., PICK, jun., A., PICK, K., and PICK, H., [trading as ALPI SEIDENWEBEREIEN UND KAWATTENFABRIK ALBRECHT PICK KOMM.-GES.] Nov. 30, 1960 [Dec. 29, 1959], No. 41141/60. Class 141. The wide end of a necktie is weighted by a rigid decorative pendant 4 suspended from the point 2a of the necktie. The pendant may be made of metal, wood, plastic materials or papier mache with a metal insert. Various shapes of pendants are described.
Patent GB-1449883-A (GB)
Title: Method of exposing a pressure sensitive adhesive
IPC: C09J7/38
Filed: 1973-08-31
Abstract: 1449883 Adhesive coated products A R LAVENDER 31 Aug 1973 [31 Aug 1973] 41157/73 Heading B2E [Also in Divisions B4 and B5] A water-insoluble pressure-sensitive adhesive coating on a carrier, the coating being protected by a non-adhesive water-absorbent or water-soluble release liner, is exposed for use by the application of water to the liner and stripping the liner. After removal, the presence of water prevents immediate development of full adhesive properties and thus permits repositioning of the carrier. The liner may be regenerated cellulose, gelatin, tissue paper, woven or non-woven fabric, e.g. cotton, or particulate material, e.g. table salt, sodium bicarbonate, polyvinyl alcohol, polyvinyl pyrollidone, hydroxyethyl cellulose or corn starch. The adhesive, which may cover the whole or part only, e.g. the edges, of the carrier, may be based on silicone, silicone/gum, polyurethane, acrylics or rubber, and is dried after application. The carrier may be of metal, wood, paper, fabric or synthetic resin film and may constitute a tile, wallpaper, structural member, decalcomanie or indicia-carrying sheet. In one embodiment, the carrier is a plastics netting having the adhesive on both faces and penetrating the interstices thereof; if the netting may be omitted so that the carrier comprises one of the two release liners. Exemplified carriers are regenerated cellulose liner, aluminium, steel, polyester, polycarbonate, polypropylene, polyethylene, fluorocarbon resins, cellulose acetate, kraft paper and decorative paper laminates. Many examples of laminates which can be made after removal of the liner are given.
Patent GB-1456719-A (GB)
Title: Radial drag conveyor for automatic handling of loose materials
IPC: E02F3/54
Filed: 1974-09-23
Abstract: 1456719 Radial drag line scraper ELBA-WERK MASCHINEN-GmbH & CO 23 Sept 1974 [21 Sept 1973] 41294/74 Heading B8E A radial drag line conveyer having an open bottomed skip 9 is mounted on a rotatable chassis 5 of a proportioning line 2 and has a rotatable jib 6. The apparatus is driven from an electric motor 12, Fig. 2, driving a pump 13 providing the drive of a hydraulic motor 15 which drives the drums 16, 23 of the hauling cable 10 and return cable 11. The drive to the drum 23 is by a chain drive 20 to a clutch 22 and the drum 23 has an induction brake 29 and a disc brake 30. The operating cycle from position I, Fig. 3, is controlled by cam operated limit switches 33, 36 wherein the contact travel of the switches 33, 36 are functions of the travel of the cables 10, 11. During hauling from position I to II slack is taken up in the cable 11 and from II to III the induction brake 29 is operated to keep tension in the cable 11 as varying resistances are encountered. At III the disc brake 30 is applied stopping the cable 11 so that the skip 9 passes over radius R 2  to IV discharging its contents into the bin 2. From IV to V after the motor 15 and drum 16 are stopped clutch 22 is engaged and motor 15 rotated in reverse the drums 16, 23 rotating together to wind in cable 11 as 10 is wound off. At V the clutch 22 is disengaged and brake 30 is applied so that by continued winding off of the cable 10 position VI is reached at which point 30 is released, 29 applied, pump 13 is switched off stopping drum 16 and cable 10 so that the skip 9 swings under gravity over radius R 4  back to I.