baber/WOPTO huggingface dataset:
Patent GB-1162860-A (GB)
Title: Catalytic Production of Alkenyl Esters
IPC: C07C69/15
Filed: 1967-06-13
Abstract: 1,162,860. Alkenyl esters. CELANESE CORP. 13 June, 1967 [13 June, 1966], No. 27130/67. Addition to 1,159,528. Heading C2C. Alkenyl esters are obtained from olefins in the presence of a Redox system comprising an acetic acid solution of a salt of a noble metal of Group VIII of the Periodic Table, a source of acetate ions, a source of chloride ions, Cu<SP>II</SP> ions and oxygen, the catalyst salts being regenerated by heating, in the presence of oxygen, a mixture of the acetic acid slurry of oxalate-containing precipitate and hydrochloric acid, characterized in that at least the theoretical amount of hydrochloric acid needed to liberate all oxalic acid from the precipitate is used.
Patent GB-253410-A (GB)
Title: Improvements in photo-electric cells
IPC: H01J40/06
Filed: 1925-10-29
Abstract: 253,410. British Thomson-Houston Co., Ltd., (General Electric Co.). Oct. 29, 1925. Vacuum tubes.-The part of the surface of a photo-electric cell which carries the light-sensitive material is roughened. Small glass particles 6, having the same coefficient of expansion as the glass bulb, and capable of passing through a 40 mesh sieve made of wires of 0.0082 inch diameter, but retained by a 60 mesh sieve made of wires of 0.0067 inch diameter, are introduced into the bulb which is then heated and revolved slowly, so that the particles are distributed evenly and fused to the surface, a space opposite the anode 4 being left for a window 7. The bulb is subsequently evacuated, a coating of silver, is applied to the roughened surface and a coating of potassium is applied to the silver, and. formed by passing a glow discharge in hydrogen. The hydrogen is afterwards replaced by argon.
Patent GB-849102-A (GB)
Title: Improvements in or relating to fog detecting and like visibility measuring systems
Inventor: NICHOLS JOHN WINFRITH DE LISLE
IPC: G01S17/95
Filed: 1955-09-23
Abstract: 849,102. Photo-electric measurement of fog, mist or smoke. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 21, 1956 [Sept. 23, 1955; May 14, 1956], Nos. 27203/55 and 14978/56. Class 40(3). In an apparatus for measuring fog, mist or smoke, light from a gas discharge lamp 10 is reflected by a mirror 11 into the area under measurement at an intensity modulated at twice the frequency of the mains supply 21. Light scattered by fog, mist or smoke in the area is detected by a vacuum photo-cell 26 at the end of a shielded telescope 22 in an axis parallel to that of the mirror 11. The lamp and photo-cell are situated together on a platform 13 which is revolved through up to 360 degrees every five minutes by a motor 15 controlled by a reversing switch 60. operated by abutments 62, 64 on the platform 13. Signals from the cell, after amplification at 27, 28, and 32 are fed into a synchronous signal detector circuit 33 where they are compared with a polarizing A.C. voltage derived from the A.C. supply 21 via an amplifier 34 and phase shifting network 65. The output from circuit 33 is fed to an integrating circuit 35 with a long time constant, the amplitude of which can be read at a meter 38 as a measure of the degree of fog, mist or smoke. When this signal reaches a predetermined magnitude it triggers a circuit 40 to sound a fog horn 48. Relays A, B, C and D ensure that, once operated, the horn sounds for at least one revolution of the platform. The degree of visibility at which the horn operates is adjusted by altering the standing bias level of the cathodes of the valves of the trigger circuit 40. A rod 70 engaging one of the abutments at the mid-point of the platform's revolution operates a test alarm by energizing a relay E causing a solenoid 72 to move mirrors 74, 75 into the dotted line positions to reflect light from the lamp on to the photocell. Operation of the horn is prevented during this test by the opening of contacts e3. At the same time a motor 77 is energized to revolve cams 80, 81, 82 to control the test circuit wherein the output of the cell is compared with a reference signal derived from a constant voltage source 87 and adjusted by a potentiometer 59 controlled by a trigger circuit 84 acting through coils 89, 90 to maintain a constant amplitude. In another embodiment, light from a fixed 360 degrees lamp is detected by a number of fixed photocells each at the focus of two telescopes.
Patent GB-339673-A (GB)
Title: Method of and apparatus for the electro-osmotic purification of liquids
Filed: 1929-09-07
Abstract: 339,673. Jackson, L. Mellersh-, (Siemens-Elektro Osmose Ges.). Sept. 7, 1929. Liquids, p u r i f y i n g ; electric endosmose; electrolytes, circulating; diaphrams.-In the electroosmotic purification of liquids by passage through the middle compartment of a three-compartment cell, part of the liquid under treatment is removed from the middle compartment 6, Fig. 1, to flush the electrode spaces, e.g. by means of bent tubes 10, preferably levelled at the top, having their longer limbs within the compartment 6; the liquid level is maintained at a higher level in the middle compartments. When diaphragms of ceramic material are employed, the communicating ducts may be passed through and supported by them. In a multiple-cell apparatus of filter-press type part of the liquid from one of the last middle compartments is led through all the electrode spaces. An apparatus for purifying water comprises a succession of cells of which the last three are shown in Fig. 5. The electrode compartment of the cell a<1> and those anterior thereto are flushed by natural water. Part of the water from the middle compartment f<1> passes by a syphon g<1> and suitable ducts to the electrode compartments b<2>, d<2> of the next cell a as indicated by arrows h, i; from these compartments it passes to the corresponding compart. ments of the last cell. The principal part of the water from the middle compartment f<1> flows to the middle compartments of the succeeding cells. The flow of water is regulated by tubes n having threaded bases which are adjustable in .plates p by milled heads m. Water flows through triangular slits o in the tubes to channels q.
Patent GB-263582-A (GB)
Title: Method of supporting steam turbines
IPC: F01D25/28
Filed: 1925-10-30
Abstract: 263,582. Richardsons, Westgarth, & Co., Ltd., and Swallow, M. G. S. Oct. 30, 1925. Mounting and supporting- -Steam turbine cylinders adapted to slide by expansion on their bed-plates are mounted so that each cylinder is maintained in the same axial position but is free to expand in all directions from a fixed point within the cylinder 'located midway between two transverse aligned keyways which provide for the lateral expansion of one of the cylinders. Fig. 1 shows a lowpressure cylinder 2 supported on bed-plates 5 by brackets 4, transversly arranged keys 6 preventing longitudinal movement and allowing lateral movement. A vertical key 10 prevents lateral movement of the cylinder axis. Transverse keys 15, with or without an additional key 20, connect the high-pressure cylinder 3 to an extension of the low-pressure cylinder, and allow independent transverse expansion. Longitudinal expansion is provided for by an expansion 22 of the cylinder 3 sliding in guides on the bed-plate. In a modification, on each side of the cylinder 2 is provided a bracket constructed as a key slidable both transversely and vertically in a bed-plate bracket.
Patent GB-158634-A (GB)
Title: Improvements in and relating to apparatus for winding yarn and the like
IPC: B65H54/16
Filed: 1919-11-06
Abstract: 158,634. Ball, F. L., and Mellor & Sons, Ltd., M. Nov. 6, 1919. Winding-machines. -The traverse bar of apparatus for winding yarn and the like is divided into sections, each section being actuated by a set of similar cams in phase so designed and positioned that the steepness of the rise of each cam is to the steepness of the fall of each cam as the number of sets of cams falling is to the number of sets of cams rising. In the arrangement illustrated, the cams are so designed that the fall is twice as steep as the rise, and are arranged in three sets 29<a>, 29<b>, 29<c>, Fig. 3, each operating a section of the traverse bar so that while one section is falling the other two are rising. The cam shaft is driven from the main shaft by a belt 19 and geared countershafts 18, 22, Fig. 2. The cam lever comprises parallel side members, between which the cam-roller and the roller that operates adjustable rods 6<a> depending from the traverse rail are accommodated. The cam shaft drives a tension roller 26.
Patent GB-1438593-A (GB)
Title: Feedback conveyor
IPC: B21D43/28
Filed: 1973-06-08
Abstract: 1438593 Feeding sheet material D J JARMAN 8 June 1973 [26 July 1972] 27327/73 Heading B3W A conveyer for use with shear equipment has a sheet-supporting surface, means for raising and lowering the surface and means for moving the surface so that sheet can be selectively removed from or fed back to the shear equipment. The conveyer comprises an assembly 21 of chains 17, 18 driven by a reversible motor 97 and supported in a frame 13 mounted on casters 14. A back gange assembly 19 comprises plates 82-84 fixed to a cross member (81) which is movable towards and away from the shear 46 at different speeds, by hydraulically-actuated feed screws (89(a) and 89b), Fig. 3 not shown, co-operating with nuts 106 fixed to the member (81). The hydraulic motor (92) driving the rods also drives means for indicating on a control panel the distance the gauge has moved. At the start of a shearing operation the worksupporting surface of the conveyer is slightly above the work table 47 of the shear and the back gauge assembly is in raised position. Actuation of limit switches (SW1) on the gauge plates by a sheet to be cut causes the blade 51 to be actuated and operates a pilot light. As the blade is lowered the back gauge assembly is lowered by means of hydraulic cylinders 31, 31a-31c and the end of the conveyer nearer the shear is lowered by cylinders 52, (142) operated at different speeds to lower one side move slowly than the other so that the sheet is always supported by the conveyer as it is progressively cut by the angled blade. One side of the stacking end of the conveyer is lowered as the cut progresses by means of a cylinder 146, a universal joint (85) being provided at the other side. The cylinders 52 and (142) act on a cross beam 22 of the chain assembly 21 through linkage 57-59 and a roller 61. After a cut, the conveyer is returned to the raised position, the chain drive operating to return the cut sheet to the shear for further cutting or to feed it to a stacker assembly 66 via a blade 63 which is movable hydraulically to the broken line position 64 to cause scrap to fall into a bin 67.
Patent GB-151637-A (GB)
Title: A tool for applying a pneumatic tyre to a wheel-felloe
IPC: B60C25/02
Filed: 1920-09-25
Abstract: 151,637. Steenis, J. van. Sept. 27, 1919, [Convention date]. Tyre covers, tools for removing and replacing.- A tyre lever comprises a jaw a with hooked portions b to engage the rim flange k, and a jaw c with a hooked portion d by which the free edge j of the tyre cover i is lifted into position over the other rim flange. The jaw a is movable parallel to the handle h and is adjusted by the nut f, the handle h being in alinement with the hooks b.
Patent GB-1285864-A (GB)
Title: Improvements in liquid containers
IPC: B65D43/02
Filed: 1970-06-05
Abstract: 1285864 Containers for packaging liquids SPRINTER PACK AB 5 June 1970 [18 June 1969] 27418/70 Headings B8C and B8D A container comprises a cup 10 having a lip 11, and a lid 12 having a central recess and a flange 16, a portion 17 of which is adapted to abut the lip 11 and be sealed thereto whilst the outer portion 20 of the flange is spaced from the lid 11 to enable the lid to be removed as by the insertion of a coin. The lid is centred with respect to the cup by means of three projections on the side wall 14 of the recess. When the container is filled with a liquid and closed, the top surface of the liquid is situated in an annular space 15 between the lid and the cup. The cup and the lid may be of polystyrene.
Patent GB-1017605-A (GB)
Title: Improvements in or relating to the preparation of dialkyl terephthalates
IPC: C07C69/82
Filed: 1962-07-18
Abstract: Dimethyl terephthalate is prepared by introducing terephthalic acid into a reaction zone, which is at a temperature above the atmospheric boiling-point of dimethyl terephthalate and a pressure not above 300 p.s.i.g., wherein an amount of dimethyl terephthalate in excess of 50 wt. per cent of the contents of the zone is continuously maintained; introducing methanol into a reaction zone, which is at a temperature of at least 250 DEG  C. and a pressure not above 300 p.s.i.g. and which contains methyl hydrogen terephthalate from the previous reaction, and removing dimethyl terephthalate from the latter zone as a vapour.  The process is preferably a continuous one.  Diethyl terephthalate may be produced analogously.
Patent GB-407424-A (GB)
Title: Improvements in power actuated clutch operating mechanism
IPC: B60K23/02
Filed: 1932-10-04
Abstract: 407,424. Operating clutches. CLAYTON DEWANDRE CO., Ltd., Lincoln, and FAGARD, J., 24, Eastgate, Lincoln. Oct. 4; 1932, No. 27558. [Class 80 (ii).] In an accelerator-controlled engine-suction servomotor for operating the clutch of a motor vehicle, the non-suction end 11 of the servomotor is fitted with an adjustably-loaded relief valve 9 and is provided with a restricted bleed port 8. During the clutch-disengaging movement, air is drawn into the end 11 through the port 8 and also, if desired, through an inwardlyopening check valve. During the engaging movement, under the action of the clutch spring, air is at first forced out of the end 11 through the port 8 and valve 9 and the movement is rapid. As soon as the clutch begins to take up its load, however, the air pressure in the end 11 falls, the valve 9 consequently closes, and the final movement of the clutch is retarded.
Patent GB-821337-A (GB)
Title: Xerographic developing apparatus
IPC: G03G15/08
Filed: 1956-09-10
Abstract: 821,337. Electrophotographic development apparatus. HALOID CO. Sept. 10, 1956 [Oct. 26, 1955], No. 27580/56. Class 98(2) A xerographic development apparatus comprises two spaced apart powder impellers for rotation about a common axis, which impel developer powder into an enclosure which extends upwardly and outwardly above said impellers and on to a xerographic plate situated at the top of the enclosure. As shown in Fig. 2, the impeller unit comprises two sets of impeller blades 10, 13, rotatable about a common axis and which impel powder resting on the bottom of the container 20 into the cloud chamber 22, the top of which is closed by the plate to be developed. The powder becomes charged by frictional contact with the blades. The impeller unit is constructed as described in U.S.A. Specification 2,304,476, and includes an electric motor in the base 6, which may be connected to a time switch as shown. Various other shapes and constructions of cloud chambers are described which are in general inverted frusta of conic sections. The developer may be calcium carbonate which has been treated with stearic acid. Specification 672,767 is referred to.
Patent GB-1464418-A (GB)
Title: Production of 2-hydroxynaphthalene-3-carboxylic acid
IPC: C09B29/14
Filed: 1974-06-21
Abstract: 1464418 Production of 2-hydroxynaphthalene- 3-carboxylic acid BASF AG 21 June 1974 [23 June 1973] 27590/74 Heading C2C The invention relates to a process for the production of 2 - hydroxynaphthalene - 3 - carboxylic acid wherein a mixture of sodium #- naphtholate and potassium naphtholate is heated in a first stage to a temperature of at least 180‹ C. and reacted with CO 2  at the said temperature in a second stage and the salt of 2- hydroxynaphthalene - 3 - carboxylic acid thus formed is converted by adding an acid into the 2 - hydroxynaphthalene - 3 - carboxylic acid. The reaction is advantageously conducted in the presence of an araliphatic compound containing at least two aromatic radicals connected to each other by a cycloaliphatic and/or aliphatic radical, or in the presence of an aromatic ether in which at least one aromatic radical is connected with at least one aliphatic, cycloaliphatic and/or araliphatic radical by way of an oxygen atom.
Patent GB-824343-A (GB)
Title: Potentiometer arrangement for translating a function with two independent variables into an electric value
IPC: H01C10/00
Filed: 1956-09-10
Abstract: 824,343. Analogue computors. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Sept. 10, 1956 [Sept. 9, 1955], No. 27619/56. Class 37. A potentiometer device for enabling the value of a function of two independent variables to be represented by a potential difference is constructed by printed-circuit methods. An insulating base is covered by a conducting material and equipotential lines of the function are marked on this surface with suitably chosen axes for the two independent variables. The conducting surface is then etched away along the marked equipotentials. A pick-up probe is arranged to traverse the surface according to the varying values of the independent variables and each portion of conducting material remaining is given an electric potential (by means of a divider network) in accordance with the value of the function at the point (see Fig. 1). In the above embodiment the pick-up probe should be large enough to contact three conducting areas at once when suitably placed. An improvement is described where the conducting areas are covered by a material of relatively high resistance (Fig. 3) and the potentials applied to the conducting areas adjusted to compensate for any current flow through the surface covering. A continuous function is now achieved and a point-contact pick-up may be used. It is stated that the surface may be flat, cylindrical or annular and may be scanned linearly or angularly.
Patent GB-970032-A (GB)
Title: Automatic sheet feeders
IPC: B65H1/14
Filed: 1963-07-12
Abstract: 970,032. Feeding sheets. G. SPIESS. July 12, 1963 [April 10, 1963], No. 27668/63. Heading B6B.  In apparatus in which a sucker 21 removes the top sheet from a pile 1 which is suspended by chains or ropes 4, 5 and raised as the pile diminishes by a motor 8 driving a pulley 7 over which the chains &c. pass, one of the chains passes over a guide wheel 10 adapted to swing in a direction transverse to its axes of rotation upon a sudden change in load to actuate a control switch 17. As shown the coal is mounted on one arm of a bell crank the other arm of which is urged towards the switch by a compression spring 16. When the pile is exhausted, the spring 16 urges the arm to close the switch to stop the feed of the sheets. When a new pile is inserted, the bellcrank is swung to open the switch to start the feed. Alternatively the switch may operate an indicator that the pile is present or absent. Excess chain is wound on a spring drum 9.
Patent GB-895781-A (GB)
Title: An improved indicator for use in conjunction with price charts of weighing scales
Inventor: ROUND DAVID STANLEY
IPC: G01G23/22
Filed: 1958-08-30
Abstract: 895,781. Weighing scale indicators. AVERY Ltd., W. & T. Aug. 4, 1959 [Aug. 30, 1958], No. 27904/58. Class 143. A price chart indicator of a weighing scale comprises an indicator arm 4 having upper and lower lateral projections 6, 9 to which is fastened a single length of cotton or wire 7 to constitute both a lining wire for the price chart and a pointer at the upper end of the arm for registration with the weight indicia, the upper projection 6 being of L- section and the wire 7 being looped thereover to constitute a pointer on each side thereof. As shown the wire 7 is anchored through an aperture 8 in the upstanding limb of the L-section projection and passes across the face thereof opposite the other limb to loop over the upper edge and across the angle of the L-section, the wire being located in notches 6a, 6b in the transverse edges of the projection. The lower end of the wire passes through an aperture 10 in the projection 9 and is anchored to a tension spring.
Patent GB-158709-A (GB)
Title: Improvements in and relating to packing or sealing pistons or the like where an air-and-water-tight and frictionless action is required
IPC: F16J3/00
Filed: 1919-11-12
Abstract: 158,709. Parker, W. N. Nov. 12, 1919. Piston-packing substitutes. -Rolling-ring packing for a piston or pump plunger &c. consists of a hollow elastic ring A, containing a gas, or liquid, rolling in a contracted space formed by making a raised surface on the outer element or on the inner element X.
Patent GB-1214494-A (GB)
Title: Improvements in casting machines
Inventor: CHECKLEY FRIC JAMES
IPC: B22D11/128
Filed: 1967-06-19
Abstract: 1,214,494. Hydraulic apparatus. ALCAN RESEARCH & DEVELOPMENT Ltd. May 31, 1968 [June 19, 1967], No.28270/67. Heading F1P. [Also in Division B3] In an apparatus for the semi-continuous casting of ingots, the ingot being produced is lowered on a stool 1 mounted on a piston 2 by releasing hydraulic fluid from a cylinder 4. To prevent vertical oscillations being set up by the cylinder gland seals 3, a hydraulic accumulator 6 which has a mass of gas in pressure reponsive contact with the hydraulic operating fluid, is connected to the cylinder 4, which enables the natural oscillatory frequency of the ram and stool to be adjusted. The mass of gas in the accumulator 6 is preferably adjustable.
Patent GB-488248-A (GB)
Title: Improvements in moulding presses of the ring and roller type
IPC: B30B11/20
Filed: 1937-10-18
Abstract: 488,248. Moulding briquettes &c. DOLOVE A PRUMYSLOVE ZAVODY DRIVE J. D. STARCK. Oct. 18, 1937, No. 28287. Convention date, Oct. 17, 1936. [Class 87 (ii)] In machines in which briquettes &c. are moulded between a roller 2 and the inner periphery of an eccentrically-mounted ring 1, and wherein one or more projections 3 are provided for dividing the moulded strip longitudinally, the surfaces of the roller that bear laterally on the blanks during their formation are inclined. The inclined surfaces 3a, 2a, Figs. 2 and 3, are shown exaggerated. In the form shown in Fig. 5, the projection 3 for dividing the blank 5 is carried by the ring member 1 and takes in a slot 6 in the roller 2 which is provided with toothed shaping means 4 for notching the blanks transversely.
Patent GB-904000-A (GB)
Title: Improvements relating to electronic bi-stable circuit arrangements
Inventor: CASSERLEY DAVID JOHN
IPC: H03K3/12
Filed: 1960-08-16
Abstract: 904,000. Valve bi-stable circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 13, 1961 [Aug. 16, 1960], No. 28310/60. Class 40 (6). In a bi-stable circuit comprising a pair of cathode coupled valves V1, V2, with crosscouplings C1R1, C2R2 between anodes and grids, a common cathode load is formed by at least one zener diode Z1 connected in reverse to the normal current flow through the valves. Two or more zener diodes connected in series may be provided, the valve grids being connected through individual rectifiers to a tapping point between the diodes, Fig. 2 (not shown). A plurality of bi-stable circuits may be connected in cascade, all the valves having a common cathode load formed by series-connected zener diodes, Fig. 3 (not shown).
Patent GB-928649-A (GB)
Title: Improvements in or relating to passenger-carrying road vehicles
IPC: B62D31/04
Filed: 1960-08-16
Abstract: 928,649. Omnibuses. R. E. COX. Nov. 8, 1961 [Aug. 16, 1960], No. 28322/60. Class 108(1). A single or double deck omnibus has a front door 10 forward of the front wheels 13, a door 12 between the wheels 13 and 14 and a further door 11 aft of the rear wheels 14. Staircases leading to the upper deck angle forwardly and are disposed adjacent the ends of the vehicle.