baber/WOPTO huggingface dataset:
Patent GB-643588-A (GB)
Title: Improvements in weighing apparatus on vehicles
IPC: G01G13/02
Filed: 1948-01-16
Abstract: 643,588. Endless chain conveyers; shoots and hoppers; unloading vehicles. BOOKEY, J. T. B., and SMITH, W. A. Jan. 16, 1948, Nos. 1417 and 12244. [Classes 78 (i) and 78 (iv)] [Also in Group XVIII] A vehicle has provision for weighing a bag while it is suspended beneath a controlled outlet of a hopper supported by the vehicle, said outlet being closed either manually or automatically when a predetermined weight of material has been transferred to the bag. Sacks 16, Fig. 1, are suspended by diametrically opposed handles 20, securedthereto, from the arms 25 of a spring balance 28, under the discharge shoot 15 of a hopper 10 which is pivotable about pivots 12 to facilitate discharge. When a predetermined weight of material has been discharged into the sack a cut-off gate is closed, either manually or automatically, and the final weight of material is adjusted by manually scooping material from auxiliary containers through doors 19. These containers 18 are formed by the corners of the hopper 10 and plates 17, Fig. 3, which plates also serve to direct material into the shoot 15. Endless chains 23 carry hooks 22 which, on actuation of the chains engage under rods 21 on the handles 20 and lift the bag off the arms 25 and raise it to a convenient height for removal on an operator's back. These chains are driven by sprockets 39 on a shaft 40 which is driven either manually or by a fluid motor (not shown). The' weighing apparatus is set in a gymbal mounting pivoted at 31 and 33 and is counterbalanced by weights 30 so that for all vehicle positions the apparatus remains vertical, and in order that the hopper, when tilted, will not foul the balance mechanism an accommodating recess 45 is formed therein. In a modification, Fig. 4, the load is suspended from links 59 pivotally mounted on a yoke 60 which is pivoted to the main frame at 61 and the spring balance is pivotally mounted on the hopper; thus the weighing mechanism remains vertical for all vehicle positions as before. In another modification (Fig. 8, not shown) the bag is held in the filling position by hand, and the bottom of the bag is supported on a weigh pan from which it is lifted as before by the endless chains 23. The hopper may' be discharged into the shoot by means of an endless belt conveyer 90, Fig. 6, which constitutes the hopper floor, or the hopper may contain a movable push plate (not shown). In all the above modifications a counting device is incorporated to indicate the number of weighings carried out.
Patent GB-1135082-A (GB)
Title: Improvements in or relating to photosensitive printing plates
Inventor: ADAMS RONALD ALFRED CHARLES
IPC: G03F7/038
Filed: 1966-01-12
Abstract: 1,135,082. Lithographic printing plates. ALGRAPHY Ltd. Jan.12, 1967 [Jan.12, 1966], No.1491/66. Heading G2C. A lithographic printing plate is prepared by (1) applying to the plate a coating of a composition comprising a copolymer of ethylene and maleic anhydride of formula in which n is an integer, and a lithographic sensitizer e.g. ammonium dichromate or sodium 4, 4' - diazidostilbene - 2, 2' - sulphonate; (2) exposing the plate to actinic light selectively to render insoluble areas of the coating on development; (3) removing the coating from the non- exposed areas; (4) etching or otherwise treating the bared areas to make them selectively ink receptive and (5) removing the residual coating. The plate may be of aluminium which has been grained and anodized. Other polymers such as polyvinyl alcohol, vinyl methyl ether/maleic anhydride copolymer or gum arabic may be present in the light-sensitive coating.
Patent GB-617609-A (GB)
Title: Method and means for measuring the specific surface of foam
IPC: G01N21/85
Filed: 1946-01-16
Abstract: 617,609. Photo - electric densitometers. CLARK, N. O. Jan. 16, 1946, No. 1500. [Class 40 (iii)] [Also in Group XXXVI] The specific surface of foam, i.e. the total surface area in a unit volume of foam, is measured by measuring the opacity of the foam flowing in a pipe-line having two glass tubes containing respectively a photo-electric cell E, Fig. 9, and a lamp C. The current through the cell E is balanced against that through a cell D illuminated by a lamp B through an optical wedge, so that the position of the wedge corresponds to the specific surface. Preferably, the lamps B, C are supplied from the same source e.g. an accumulator, on which the load is maintained constant by resistances connected across the source when the lamps are disconnected. The optical wedge preferably consists of a rotating cylinder 93, Fig. 10 (not shown), with a transparent zone whose profile is the curves of the reciprocals of the natural numbers. For very dense or highly coloured foams, the current through lamp B is reduced by a resistance 63. A flow-meter as described in Specification 598,635, [Group XXVI], may be incorporated in the same pipe-line. The expansion factor, i.e. the ratio of volume of foam to the volume of liquid it contains, may also be determined by measuring the conductivity of the foam, the current between electrodes A, Fig. 9, being compared with that between electrodes 31, 33 located in liquid from which the foam is produced.
Patent GB-1086612-A (GB)
Title: Photographic cameras
IPC: G03B7/16
Filed: 1965-01-13
Abstract: 1,086,612. Photographic cameras. R. GRUTER, W. MEIXNER and A. NOLTE [trading as BALDA-KAMERAWERK RUDOLF GRUTER KOMM GES]. Jan. 13, 1965 [June 2, 1964], No.1540/65. Heading G2A. A photographic camera has diaphragm blades 25 controlled by an exposure meter 33 for daylight photography and by the focusing ring 1 for flashlight photography. In the position shown for flashlight exposure a projection 17 on a changeover ring 8 engages a rod 18 to hold a lever 19 in engagement with a detent 20 on a ring 21 to make the exposure meter inoperative and a pin 5 on a rocking lever 6 engages in a cam 4 in the focusing ring 1 and in a cam 9 in a control lever 10. The control lever operates the diaphragm blades 25 through a pin 35 and a lever 22. The cam 9 has three sections and the pin 5 operates in the respective one of these sections depending on the setting of the changeover ring 8. In the sections 9" and 9"' of the cam 9 corresponding to direct flashlight and bounced flashlight exposures the control lever 10 is moved by the pin 5 to operate the diaphragm blades in response to movements of the focusing ring whereas in the section 9' of the cam 9 corresponding to daylight exposure the pin 5 moves independently of the lever 10 which is then operated by movement of the pin 35 riding in cam 21' in the ring 21 operated by the meter 33 since the detent lever 19 is disengaged by the ring 8.
Patent GB-538347-A (GB)
Title: Improvements in and relating to fertilizers
IPC: C05D3/00
Filed: 1940-01-25
Abstract: 538,347. Magnesium compounds. AMERICAN ZINC, LEAD & SMELTING CO. Jan. 25, 1940, No. 1542. Convention date, Feb. 4, 1939. [Class 1 (iii)] [Also in Group I] A fertilizer composition containing magnesia, calcium carbonate and magnesium and calcium sulphates is produced by mixing dolomite with about half the equivalent quantity of sulphuric acid and heating the mixture to 600‹ C. in an atmosphere of steam.
Patent GB-1224482-A (GB)
Title: Improvements in or relating to saws
Inventor: KARP STEFAN
IPC: B23D49/12
Filed: 1968-01-10
Abstract: 1,224,482. Sawing. SPEAR & JACKSON Ltd. 8 Jan., 1969 [10 Jan., 1968], No. 1549/68. Heading B5L. A tubular frame saw comprises a frame 2 formed at at least one end portion on its outward-facing part with a slot 5 for receiving a pair of aligned projections 6, one on each side of an end portion of a saw blade and a slot 7 substantially in the plane of the frame to permit insertion of the blade and one end portion of the frame having a slot 8 and slit 9, 10, the slit receiving studs 11 on a locking lever 4 also formed with a slot 12 and slit. With one end of the blade located by its projection 6 engaging the slot 5, the studs 11 of the lever are engaged with the slot 8 in the other end of the frame, and the projections 14 at that end of the blade are engaged with the slot 12 in the lever which is then rocked to an over-centre position to hold the blade in the frame under tension.
Patent GB-231960-A (GB)
Title: Improvements in or relating to spring suspension arrangements for vehicles
IPC: B60G11/42
Filed: 1924-01-19
Abstract: 231,960. Thornyeroft & Co., Ltd., J. I., and Barford, V. G. Jan. 19, 1924. Springs, arrangement of; laminar and indiarubber springs.--A resilient block b is arranged on the frame of a vehicle directly above and near to each end of an ordinary semi-elliptic spring a which is secured at its centre to the axle and is suitable for light loads, the arrangement being such that, as the load is increased, the blocks are compressed or deformed and take an increasing amount of the load, the effective length of the spring being at the same time shortened. Each block is preferably attached, as by vulcanization, to a plate h secured in a bracket c on the frame by studs f, the position of the block relatively to the spring being adjusted by the interposition of washers g. The lower surface b<1> of the block is inclined upwardly away from the end of the spring.
Patent GB-725289-A (GB)
Title: Improvements in plastic composition
IPC: C08L25/06
Filed: 1953-01-20
Abstract: A composition comprises 30-65 per cent polystyrene, 30-65 per cent of a resinous copolymer containing 80-95 per cent styrene and 20-5 per cent butadiene, and 5-30 per cent of a rubbery copolymer containing 70-95 per cent butadiene and 30-5 per cent styrene.  The rubbery copolymer can be cross-linked, e.g. with divinyl benzene, and lubricants, e.g. zinc stearate, fillers and pigments, e.g. titanium dioxide-barium sulphate may be present, preferably to the extent of 1-100 parts per 100 parts of resin-rubber mixture.  It is preferred that the resinous copolymer has an A.S.T.M. heat distortion temperature of at least 140 DEG  F.
Patent GB-1090716-A (GB)
Title: Method of treating aluminum welding wire and wire produced thereby
IPC: C25D11/04
Filed: 1965-01-14
Abstract: Aluminium welding wire is treated to render weld beads produced therefrom non-porous by continously passing it through a first aqueous solution containing an anode strip insulated there from, then a second aqueous solution containing a cathode strip insulated therfrom, an electric current being applied to the strips whereby the wire is cathodic in the first solution and anodic in the second solution, and drying and rinsing the wire. Both solutions may be acidic, e.g. of H3PO4, H2SO4, CrO3, HF and/or HNO3, where after rinsing the wire is immersed in an acid oxidizing solution and again rinsed; or alkaline, e.g. of alkali metal or ammonium hydroxide and/or alkali metal salts of a strong base and weak acid hydrolyzing to an alkaline solution, where after rinsing the wire is passed through a passivating and neutralizing acid bath and again rinsed. The current density may be 25 - 1000 A. S. F.  A coating of gamma alumina 10 - 60<\>rA thick is produced on a wire core of A1 base alloy, e.g. consisting of either 3 - 14% Si, 2 - 7% Mg, 0.1 - 1.5% Fe + Si or 2 - 5% Zn + 1 - 4% Mg, and balance A1.
Patent GB-234158-A (GB)
Title: Improvements in and relating to electric asynchronous machines
IPC: H02K17/28
Filed: 1924-01-22
Abstract: 234,158. Ellis, G. B., (Sachsenwerk Lichtund Kraft-Akt.-Ges.). Jan. 22, 1924. Addition to 223,657. Drawings to Specification. Alternating-current commutator machines. - In a modification of the invention of the parent Specification, the speed of a compensated machine is varied above and below synchronism by varying the resistance in the secondary circuit simultaneously with a change in the phase angle between the secondary and compensation voltages ; the compensation voltage is chosen of such a high value as to be suitable for regulation. The phase angle between the voltages may be varied by changing the phase connections of the secondary winding, reversing the ends of the phase, changing from star to delta or to double-star connection, or by an adjustment of the brush-rocker. The necessary change of connections between the ends of the secondary phases and the commutator brushes may be effected by a controller. The secondary resistance may be changed by connecting parts of the winding in series or in parellel, by the use of tapping points, a change of connection from star to delta or double-star or by the inclusion of external resistances which may be incorporated with the starter.
Patent GB-683057-A (GB)
Title: Process for the production of hollow valves and valves obtained by this process
IPC: B23P15/00
Filed: 1951-01-24
Abstract: 683,057. Making valves. JEUDI, G. Jan. 24, 1951 [Jan. 28, 1950], No. 1885/51. Class 83 (ii). [Also in Group XXVII] Hollow valves of the type in which the valve head 1a is closed by a cap 4, are made by press fitting the cap into the head and providing a welding bead along the junction line between the cap and the head, the cap having a circular flange 4a engaging a groove in the upper face of the head. The maximum diameter of the flange and its thickness are slightly greater than the maximum diameter and width respectively of the groove. The groove for the welding bead may be machined before or after assembly. The valve body 1 is preferably formed from a cylindrical rod by swaging to expand the bead 1a and drilling and machining the bore 2 and recess 3. A narrow bore 8 permits of introduction of sodium into the head, or the sodium may be introduced before the cap is fitted.
Patent GB-926266-A (GB)
Title: Improvements in or relating to eccentric gears
IPC: F16H1/32
Filed: 1961-01-17
Abstract: 926,266. Toothed gearing; variable-speed gearing. FICHTEL & SACHS A.G. Jan. 17, 1961 [Feb. 23, 1960], No. 1941/61. Classes 80 (1) and 80 (2). In epicyclic gearing comprising an externally toothed gear 6 rotatably mounted on an eccentric 2 secured to an input shaft 1 and meshing an internally toothed gear 13 integral with an output shaft 17, the gear 6 is prevented from rotating with respect to the gear housing 9 by rollers 8, rotatably mounted on pins 18 carried by the housing 9 and projecting into bores 7 formed in the gear 6. The rollers 8 are made of resilient material and a balance weight 16 is provided. In a modification, an eccentric roller 23 is rotatably mounted on a pin 18 and within a bore 7 in the gear 6 by needle bearings 19 and 22. Three such rollers 23 are employed. A two-speed gear, shown in Fig. 5, comprises a stepped gear 106 rotatably mounted on an adjustable double eccentric 102, 125 and carrying pins 118 on which rollers 108 are rotatably mounted. The rollers have stepped surfaces which engage stepped bores 107 in the housing 109. A hollow driving-shaft 101 and adjustment shaft 126 are locked together in relatively adjustable angular positions by means of a stop pin 131 in discs 130, 132. Fig. 6 shows an infinitely variable friction gear comprising a disc 206 rotatably mounted on an adjustable double eccentric 202, 225 and being prevented from rotating by conical rollers 208 which are mounted on shafts 218 supported in the housing 209 and engaging conical bores 207 in the disc 206. The periphery of the disc 206 is spring- pressed between members 213, 214 attached to the output shaft 217. Change of gear ratio is effected by movement of a lever 252 which not only effects axial movement of the shafts 218 carrying the rollers 208, but also varies the eccentricity of the eccentric 202 through mechanism comprising a forked member 229 which moves a control sleeve 235 axially, and thereby, through a screw-threaded connection, causes rotation of an adjustment shaft 226 secured to the eccentric 202. Fig. 7 shows another modification in which the rotation of an eccentrically mounted internally toothed gear member 306 is prevented by cranks 350 rotatably supported in the housing on needle bearings 351.
Patent GB-979742-A (GB)
Title: A process for preventing corrosion in containers and pipes for mineral oils and fuels
IPC: C10L1/22
Filed: 1963-01-17
Abstract: A mineral oil or fuel comprises one or more hydrocarbons and less than 0.1% by volume of each of the additives (i) hydrazine hydrate, and (ii) an organic amine containing at least one aliphatic, cycloaliphatic or heterocyclic group.  Specified amines include ethylene and tetramethylene diamines, diethyl and dibutyl amines, triethanolamine, 1-amino-3-butoxy-propane, morpholine and cyclohexyl mono- and diamines. In examples, the additives are added to heavy fuel oil and crude oil.
Patent GB-749430-A (GB)
Title: Improvements in or relating to sub-machineguns
Inventor: SAETTER-LASSEN ERIK
IPC: F41A21/48
Filed: 1951-01-30
Abstract: 749,430. Sub-machine guns. DANSK INDUSTRI SYNDIKAT COMPAGNIE MADSEN AKTIESELSKABET. Jan. 30, 1951, No. 2309/51. Class 92 The breech casing of a submachine gun with its magazine hopper 1 and hand grip 2 is divided longitudinally about a vertical centre plane, the two halves 3, 3<SP>1</SP> being hinged at 17 at their rear ends and having their front ends fitted with the halves of a block 20, the latter forming a bearing for the rear end of the barrel 22 which is locked in position by a nut 24 screwed on to a forward extension of the block 20. In the construction shown the barrel has a flange 23, and is formed with a conical surface 26 which is engaged by forwardly extending flaps 25 of the nut 24. The half 3 of the breech casing has secured to it a channel 4 fitted with pivot pins for the trigger 10, sear 11, safety device 12, and magazine holder 13, and the upper surface of the channel forms a guide for the breech-block 5. The breech-block can be retracted by a channel-section plate 30 riveted to a pin 28 which passes through a slot 29 in the breeck casing and into the breech-block where it is held by the coned head 32 of a spring-pressed member 33. This member may, as shown, form the front portion of a telescopic unit 33, 34, acted upon by the return spring 35. A plate 38 riveted on the end of the part 34 rests against the rear wall and side walls of the casing and also on the top of the channel 4.
Patent GB-1420401-A (GB)
Title: Rotary harrows
IPC: A01B49/02
Filed: 1973-01-16
Abstract: 1420401 Rotary harrows C VAN DER LELY NV 16 Jan 1973 [24 Jan 1972] 2328/73 Heading A1B Soil working members 10 are arranged in two groups such that the two strips of soil worked by the groups adjoin or overlap each other, and drive is transmitted to the members 10 of each group by a common drive shaft 25 located midway between the groups as seen in plan, the common drive shaft 25 being connected to each gear box 15 which is common to its group and located between the ends of the group. The soil working members 10 of each group are supported by a beam 8, the beams 8 being pivoted by pins 5 to a frame 1 secured via a coupling member 30 to a tractor, so that the beams may be swung to the upright transport position (dashed lines). The shafts 9 of the members 10 carry meshing pinions 11 driven through gear-boxes 15, universal joints 15, and telescopic shafts 20, universal joints 21 and bevel gear box 23 from the common drive shaft 25. Pinions 26 on shaft 25 meshes with pinion 27 on a shaft 28 connected to the tractor power take-off; the pinions 26 and 27 are releasable via cover 29 to change the gear ratio. The beams 8 are swung upwardly about pins 5 and are held upright by means of rods 33 and the beams 8 are 'free to pivot about the pins 5 while harrowing. The depth of penetration of the tines 14 is determined by vertical adjustment of roller 32. In Fig. 3 (no't shown), the beams 8 are moved to the transport position by a doubleacting hydraulic piston-and-cylinder (36) connected to the tractor hydraulics, the piston rods being pivoted to arms (36A) secured to brackets 7. In Fig. 4 (not shown), the gear boxes 15 have their input shafts (37) directed rearwardly and connected via universal joints (38) and shafts to two stub shafts (39). Sprockets (40) carried by the stub shafts (39) are engaged by chains (41) engaging a twin sprocket (42) mounted on the common drive shaft 25. In Figs. 5 and 6 (not shown), the beams 8 are pivoted about vertical axes 46 corresponding to the shafts of the fifth or third soil working members 10 from the centre, so that the beams 8 may be swung horizontally to lie alongside or immediately behind the tractor wheels, locking means (not shown) being provided to hold the beams 8 in their working positions as well.
Patent GB-667874-A (GB)
Title: Improvements relating to freezing devices
IPC: F25C1/24
Filed: 1950-02-01
Abstract: 667,874. Ice-making. GENERAL MOTORS CORPORATION. Feb. 1, 1950 [Feb. 16, 1949], No. 2576/50. Class 29. In an ice-tray 24 having a grid 15 comprising a two-part centre wall 16, crosswalls 17 and an operating lever 18, the end two cross-walls 31 are extended upwardly to support a superposed tray clear of the rim 28 and the operating lever of the lower tray. The upward extensions comprise two side extensions 33 with flat tops 34 and ears 36 to restrain sideways slipping of the superposed trav.
Patent GB-643971-A (GB)
Title: Improvements in filters for air or other gases
IPC: B01D46/12
Filed: 1946-02-26
Abstract: 643,971. Gas filters. HALL &, KAY, Ltd., HALL, S., and MYERS, A. Feb. 26, 1946, No. 2616. [Class 8(ii)] In a gas filter screen of the kind comprising gas pervious material, e.g. flannel by which dust particles are arrested, cleaning-is effected by a counterflow of filtered gas and by causing unfiltered gas to pass over the dust-laden surface but not through the screen. As shown, the filter comprises a plurarity of hollow frames 7, Fig. 3, each blocked permanently at the top and the rear vertical edge, and blocked temporarily at the base by a damper 11. The frames are open at the front and have flannel sides. They are spaced by abutting flanges and assembled in groups of five having a common hopper 10 controlled by the damper 11. During normal filtering a suction fan (not shown) draws gas from an inlet 5 to the interior 9 of the frames 7, through the screens to exterior spaces 8 and a clean gas outlet 6. For cleaning a particular group of frames an auxiliary fan draws clean gas from the outlet 6 and the exterior spaces 8 reversely through the screens to the spaces 9, the appropriate hopper 10, the open damper 11 and a duct 12 leading to the auxiliary fan. Simultaneously unfiltered gas is drawn by the auxiliary fan from the inlet 5 to the spaces 9, the entrances to which are blanked by a partition 14, Fig. 2, extending to the top to cause the unfiltered gas to sweep down over the dust-laden surfaces of the screens to the hopper 10 and duct 12. The remaining groups of frames continue in normal filtering operation.
Patent GB-371063-A (GB)
Title: Improvements in blow-off valves
IPC: F22B37/54
Filed: 1931-01-27
Abstract: 371,063. Blow-down valves. GERDTS, G. F., 31, Markusallee, Horn, Bremen, Germany. Jan. 27, 1931, No. 2636. Convention date, Jan. 29, 1930. [Class 135.] Lift valves; actuating- mechanism. - A blow down valve x for steam boilers is made operable by a lever h for quick operation and provided with a screwed sleeve c for holding the valve open, when required, or securely holding it in the closed position. The valve spindle d is plain and unthreaded and provided with abutments e, f with which a screwed sleeve c engages to hold the valve closed or open, respectively ; between these positions the valve spindle is free to be opened quickly by the lever h and closed subsequently by the spring i. A supplementary check valve j may be provided for cutting off the flow in the event of accident to the main valve x.