baber/WOPTO huggingface dataset:
Patent GB-209494-A (GB)
Title: Improvements in apparatus for automatically indicating the rise or fall of the level or specific gravity of a liquid
IPC: G01F23/56
Filed: 1922-10-11
Abstract: 209,494. Ratcliffe, C. P., and Oldham, J. Oct. 11, 1922. Hydrometers. - Apparatus for indicating variation in the specific gravity of a liquid beyond predetermined limits comprises a casing a with apertures b to admit liquid to the interior. A hydrometer c working in the casing is provided with a guided stem d carrying a bridge piece g which, when the specific gravity of the liquid falls beyond a predetermined point, dips into cups hand completes an electric circuit. In a modified form, the whole of the apparatus floats in the liquid, the casing a being supported by floats.
Patent GB-660572-A (GB)
Title: Phonograph apparatus
IPC: G11B17/16
Filed: 1947-10-15
Abstract: 660,572. Magazine gramophones. PHILCO CORPORATION. Oct. 15, 1947. [Oct. 19, 1946]. No. 27632/47. Class 40 (ii). In phonograph apparatus, a lever 22 Fig. 2, having a resilient projection 30, is connected with the tone arm and is disposed to engage stops 31, 32 for arresting the tone arm in the starting position, the projection 30 being yieldably displaceable when the tone arm is forced past the starting position. The lever 22 is pivoted to the tone arm at one end 23 and carries at the other end the projection 30. The projection 30 is fitted into a slot, having a shelf 38 Fig. 8, in the lever 22 and is held in position by a spring 41 anchored to the lever at 42 and bearing on the-projection at 43. The projection thus pivots about the edges 44, 45, a greater force being required to force the tone arm past the stop in one direction than is required to restore it, owing to the disposition of the spring 41. A cam 24 actuated by suitable mechanism at the end of playing of a record has inclines 60, 62 co-operating with a finger 49 forming part of an extension 46 pivoted at 48 and adapted to position the stops 31, 32 in the path of the projection 30. The extension 46 also carries a pin 51 to which is pivoted a lever 53 controlling the second stop 32. During the operation of cam 24, a spring 57 urges the lever and the stop 32 out of the path of the projection 30. The other end of the lever 53 protrudes through a hole in the baseboard for co-operation with 12 inch records only. When a 10 inch record is placed on the turntable, the stop 31 is positioned by means of the cam 24 and extension 46, but due to the action of the spring 57 and lever 53, the stop 32 is held inoperative as shown in Fig. 4. When a 12 inch record is placed on the turntable the lever 53 is depressed and stop 32 is positioned by the action of the extension 46 as shewn in Fig. 5. During the playing of a record the cam 24, extension 46 and the stops 31, 32 remain inoperative as shown in Fig. 3. Specification 660,566 is referred to.
Patent GB-1271846-A (GB)
Title: A door comprising vertically movable telescoping sections
Inventor: ABERG MARTIN BIRGER
IPC: E06B3/92
Filed: 1969-05-30
Abstract: 1,271,846. Telescopic doors; latches; operating-mechanism. M. B. ABERG. 30 May, 1969 [31 March, 1968], No. 27634/69. Headings E1J and E2M. A telescopic door comprises a number of sections vertically slidable inside each other, each section having a horizontal base portion with downwardly extending legs 1b, and the door is operated by a rope 8 engaging the lowest section 4 and passing through apertures in the base portions of sections above and wound on a motor-driven drum, the rope being coupled to weight or spring means 9 which keeps the rope 8 taut, if the door is obstructed in its downward closing movement, until the motor is switched off or reversed. When the lowest section 4 is obstructed, a microswitch 14 with an actuating member 15 mounted on the top of the section 4 is operated by impact against the base portion of the next section above, the microswitch then operating the motor. A second microswitch 16 for the motor is mounted in the section 4 and is actuated by the weight or spring means 9. A movable sleeve 12 projects through an aperture in the top of the section 4 and surrounds the rope 8 and supports the base portion of the section next above, and the sleeve is connected by a pivotally mounted lever 18 to a latching member 19, so that when the door is closed the latching member is automatically displaced to engage a frame recess. In the closed position, hooks 1c, 1e on respective door sections engage; the lowest section 4 carries guide rollers 6.
Patent GB-1195936-A (GB)
Title: Protection of Molten Metal Treatment Lances.
Inventor: DUCHATEAU JEAN-LOUIS
IPC: C21C5/46
Filed: 1968-06-11
Abstract: 1,195,936. Blowing lances. FOSECO INTERNATIONAL Ltd. 3 June, 1969 [11 June, 1968], No. 27679/68. Heading F4B. A lance has a protective layer of compressible refractory material applied to the end which is immersed in molten metal, so that solidified metal or slag may readily be removed without damaging the lance. Semi-cylindrical sleeves 2 or strips of fibre-containing bonded refractory are secured to the lance head 1 by clips 3, or are stuck to the lance head. The refractory layer and any exposed parts of the lance are coated with a refractory non-wet coating such as a mixture of chromite powder, graphite powder and bentonite in an aqueous solution of aluminium ortho-phosphate, or chromite flour with a silica sol and polysaccharide gum in water.
Patent GB-1075751-A (GB)
Title: Improvements in tabulator mechanisms for hand or power driven typewriters or similar office machines
Inventor: STARKE OTTO
IPC: B41J21/08
Filed: 1964-07-06
Abstract: 1,075,751. Typewriters. OPTIMA BUEROMASCHINENWERK ERFURT VEB. July 6, 1964, No. 27705/64. Heading B6F. A tabulator mechanism comprises a pawl-like abutment 2 mounted pivotally on an end 1d of a tabulator key lever 1 said abutment 2 displacing a bell-crank 5 on depression of a tabulator key 1b to place a tabulator stop slide 6 into an operating position (Fig. 2, not shown) said slide being returned to its rest position without any mechanical association with the tabulator key lever. In operation on depression of the tabulator key 1b the slide 6 is raised upwardly against the action of a spring 10 whereby a lug 11 engages a retaining member 12 and a further lug 7 raises a switching member 8 which disengages the escapement mechanism (not shown) thus freeing the carriage (not shown) for movement in the letter spacing direction. When a preset rider (not shown) abuts against the slide 6 the latter is pivoted counterclockwise with its slide guide 15 operating an angle lever 14 which moves the retaining member 12 out of the range of lug 11 and the slide 6 is returned to its rest position by the spring 10. Simultaneously the switching member 8 resting on the lug 7 reengages the escapement mechanism thereby arresting the movement of the carriage so that typing can commence. On release of the tabulator key 1b the pivot-like abutment 2 (Fig. 4, not shown) whose nose 2b engages the upper surface of an abutment 5b (Fig. 3, not shown) is displaced counterclockwise against the action of a leaf spring 4 which restores the abutment 2 to its original position shown in Fig. 1.
Patent GB-663455-A (GB)
Title: Improvements in or relating to trigger circuits
IPC: H03K3/12
Filed: 1949-10-28
Abstract: 663,455. Valve relay circuits. BRITISH TABULATING MACHINE CO., Ltd. Oct. 28, 1949 [Nov. 17, 1948], No. 27707/49. Class 40 (vi). In a trigger-pair circuit comprising tetrode valves having cross couplings between their anode and control-grids the speed of operation is increased by capacitors connected between the anode of each valve and the screen grid of the other which reduce the effect of the interelectrode capacities and cause the voltages on the control and screen grid of each valve to change simultaneously in the same direction. The Figure shows a trigger-pair circuit comprising cross-connected tetrode valves A<SP>1</SP>, A<SP>2</SP> which is triggered by negative going pulses applied to the common anode circuit at terminal 32. The anode and control grids are cross-connected by the parallel connected capacitors and resistors 23, 20 and 26, 28 respectively and the inter-electrode capacities are reduced by the neutralizing networks 35, 36 and 37, 38 respectively, which lessen the tendency to parasitic oscillation at high operative speeds. The values of the capacitance and resistance in the series connected neutralizing networks is adjusted to effect a compromise between complete neutralization and the deleterious effect on speed of operation of capacitive loading of the output circuit. Resistors 24, 29 and 14, 17 are grid and anode stopper resistors respectively.
Patent GB-1524401-A (GB)
Title: Microbiological culturing method and means
IPC: C12N1/00
Filed: 1976-07-02
Abstract: 1524401 Microbiological testing MILES LABORATORIES Inc 2 July 1976 [8 Dec 1975]  27708/76 Heading C6F In a method of culturing or detecting microorganisms, wherein a substantially dry, waterabsorbent, web matrix e.g. of bibulous paper, incorporating microbiological nutrient materials, is rehydrated with aqueous liquid and the rehydrated matrix is contacted with the microorganism or test specimen for incubation, the aqueous rehydration liquid contains a water-soluble polyhydric alcohol. The method is stated to be especially useful for the culturing of osmotically fragile micro-organisms, including Neisseria gonorrhoeae and Neisseria meningitidis. The preferred polyhydric alcohols conform to the Formula: wherein n may be 0 or 1 to 4. Glycerol and a number of other alcohols are particularly mentioned. The polyhydric alcohol should be present in the rehydration liquid in an amount producing a concentration of between 1 and 6 per cent by weight to volume in the rehydrated web matrix. A culturing device 30, Figs. 1 and 2, suitable for use in the method consists essentially of a rectangular base 11 of polystyrene formed with wells 13 and 14, and a polyethylene cover 21. In one embodiment, nutrient-containing web matrices or pads 15, 16 are disposed in the wells 13, 14, the pads are rehydrated in the defined manner using an aqueous liquid containing a water-soluble polyhydric alcohol and the rehydrated pads are contacted with the micro-organism or test sample. During the ensuing incubation a cover 21 having vent slots 24, 25 may be applied over the wells and the closed device sealed in an aluminium pouch (26) with a CO 2 -releasing tablet (27) Fig. 3 (not shown). In an alternative embodiment, a gasgenerating composition is substituted for one of the pads 15 or 16 and the cover employed has no vent slots. A test kit for the presumptive identification of Neisseria gonorrhoeae may include, additionally to the culturing device a pad of cytochrome oxidase indicator (specified organic compounds) for imparting a purple coloration to the microbial colonies produced.
Patent GB-815002-A (GB)
Title: An improved method and apparatus for book or card-edge gilding
Inventor: WHITE JOHN ROLAND
IPC: B42C7/00
Filed: 1956-09-11
Abstract: 815,002. Ornamenting. GILDMORE PRESS Ltd. Sept. 11, 1957 [Sept. 11, 1956], No. 27740/56. Class 93 A process for gilding the edges of the leaves of books 8, playing cards and the like, comprises applying gold transfer foil to the surface 8a to be gilded under heat and pressure in at least two stages, the last stage being carried out at a higher temperature than the first, e.g. at temperatures of 250‹C. and 200‹C. respectively. Books 8 are clamped at 11, 12 on a frame 7 on which runs a carriage 9 having rollers 23, 24 engaging rails 10 on the frame 7. The carriage 9 has two rollers 36, 37 which are normally held in raised inoperative position where they are rotated by an electric motor 25 through friction pulleys 38, 36b, 37b, the rollers 36, 37 being heated during rotation by electric resistance heaters 39c, 40c respectively, Fig. 4. The carriage 9 further carries a roll of heatresisting material 44, e.g. glass-based rubber sheeting, which passes round a roller 45 and beneath the roller 37 and is attached to the frame 7 at the left hand end of the apparatus in Fig. 1. The apparatus operates as follows:-The motor 25 is switched on to rotate and heat the rollers 36, 37, and the surface 8a, after suitable preparation, is covered with a gold transfer foil. The carriage 4 is drawn to the right, unwinding the material 44 which overlies the foil, and an arm 32 pushed down against a spring 34 and locked to put tension on a belt 31 and thus transmit rotation from a pulley 26 driven by the motor 25 to a pulley 27 on the shaft of which is a pinion 29 engaging teeth 30 on the frame 7. The carriage 9 thus is moved to the left and switches on valves on air pressure lines leading to pairs of pneumatic cylinders 46, 47 are actuated automatically in succession by a trip member on the frame 7 to lower first the roller 37, which presses the foil on to the surface 8a through the material 44, and then the roller 36 which presses directly on the foil, the shafts of the rollers 36, 37 being carried by the pistons of the cylinders 46, 47. The pistons are retracted by springs in the cylinders 46, 47 when a trip member engages the switches to cut-off the air to the cylinders, and raising of the arm 32 stops the carriage 9. The heaters 39c, 40c are thermostatically controlled.
Patent GB-1006939-A (GB)
Title: Purification of olefines
Inventor: WISSEROTH KARL
IPC: C07C7/177
Filed: 1962-07-19
Abstract: Ethylene, propylene, butene (1) or mixtures thereof are purified prior to polymerization by passage over beds of alumina or iron oxide at such a temperature in the range 50-200 DEG  C. that between 0.0001 and 1% by weight is polymerized. The olefine may be passed from the top to the bottom of towers containing the catalyst, thus enabling the polymerized product and purified olefine to be separated at the bottom.  The purified olefine may be partially recycled through the bed.  Operating pressures of 1-300 atmospheres absolute are specified.
Patent GB-1023943-A (GB)
Title: Apparatus and method for removing accompanying liquid of continuously transferred ion exchange resin and its application
IPC: B01J47/10
Filed: 1962-07-19
Abstract: Copper sulphate and sulphuric acid are formed from aqueous liquids, Glauber salt and ammonium chloride from ammonium sulphate solution, or sodium chloride from salt water in a continuous ion exchange system in which fresh resin, with accompanying liquid, is fed from the top of a column and withdrawn at the bottom, the operation of the ion-exchanger column and/or the regenerating column(s) being characterized by the feed liquid rate being equal to the rate of withdrawal of the treated liquid from a mid-point of the column, and the withdrawal of liquid accompanying the incoming ion exchanger from a point near the top of the column.
Patent GB-221112-A (GB)
Title: Improvements in guards for circular saws
IPC: B27G19/02
Filed: 1923-11-06
Abstract: .221,112. Harry, B. H. Nov. 6, 1923. Guards. - Adjustable guards for circular saws, of the kind comprising a segmental plate provided with a flange covering the saw teeth, are adjustably supported at the rear, as by a part sliding on a rod, and provided with cam means, such as the flange itself, co-operating with a fixed roller or other part to adjust the front edge relatively to the table. A casting 16, adjustably supported on a standard 9, carries a riving-knife 17, a roller 19, and an upwardly-inclined rearwardlyextending rod 20, on which slides end can be clamped a sleeve 21. A guard plate 4, having a flange 7 extending over the saw 11 and supported on the roller 19, is pivoted by its lug 8 to the sleeve 21' so as to lie at the side of the saw. As the rear end of the guard is raised, the roller 19 lifts the front, until, when the guard is adjusted for the thickest timber to be sawn, its lower edge is substantially horizontal. The front of the flange 7 may be curled up for strength and the plate formed into a lug to support it.
Patent GB-634893-A (GB)
Title: Improvements in electrolytic cells
IPC: H01G9/08
Filed: 1947-10-18
Abstract: 634,893. Liquid-electrode electrolytic cells. POWER-GAS CORPORATION, Ltd., and ANDREASEN, S. V. Oct. 18, 1947, No. 27916. [Class 41] In an assembly of superimposed cells the horizontal partition between adjacent cells is formed by a plate 2 having a slightly sloping upper surface adapted to support a flowing sheet of liquid metal to form a cathode, each plate 2 having one or more anode members 11 dependent from its lower surface. The side walls 5 of the cells are of transparent material and are mounted in grooves 3, 4 in the plates 2. The plates 2 are formed with supporting lugs 7 provided with insulating bushes 8 through which pass threaded supports 9 provided. with turnbuckles 10 by means of which the distance between the plates 2 may be adjusted. As shown, the members 11 are of inverted T- section, the stems 11a making a dovetail connection with the plates and being secured by wedge-shaped fixing pieces 12 secured by adjusting bolts 13. The ends of the cell are provided with inlets and outlets for liquids and gases. Additional lugs are provided on the plates 2 which may be connected to bus-bars to short-circuit one or more cell units.
Patent GB-434387-A (GB)
Title: Improvements in and relating to pivots for instruments
IPC: G01C17/00
Filed: 1934-09-29
Abstract: An indicating device such as an aircraft compass indicator or other instrument, comprises a pivot consisting mainly of tantalum and having a nitrogenized surface.  The tantalum may be alloyed with 7 1/2 per cent of tungsten.  A process for the manufacture of pivots comprises drawing wire to the desired thickness, cutting it into lengths which are then shaped, and subjecting these lengths in an open nickel boat to an atmosphere of nitrogen while in a furnace heated to 500 DEG  C. for 20 to 30 minutes.  Different temperatures and times may be employed. Atomic nitrogen from the dissociation of ammonia gas may, alternatively, be employed in the nitrogenization process.  Reference has been directed by the Comptroller to Specification 3691/05, [Class 12].
Patent GB-158982-A (GB)
Title: Improvements in apparatus for electrical treatment of gases
IPC: B03C3/40
Filed: 1919-11-13
Abstract: 158,982. Mond, A., (International Precipitation Co., Inc.). Nov. 13, 1919. Gases, electrically precipitating suspended particles from. - An electrical precipitator for removing suspended particles from gases is provided with discharge electrodes 2, Fig. 2, consisting of vertically-extending rigid smooth bars, pipes or reds of a cross-section symmetrical about an axis, relatively large as composed with wires, but relatively small as compared with the cross-section of the collecting-electrodes, Figs. 2 and 3; the bars may be of circular, elliptical or polygonal section, or they may consist of twisted square bars, or rods provided with longitudinal ribs as shown in Fig. 6, and the discharge electrodes may be one half to two inches in diameter as compared with collecting-electrodes of six inches to one foot in diameter. Discharge electrodes of this construction may also be employed with plate collecting-electrodes, the gases being passed horizontally through the apparatus as shown in Fig. 4, or vertically; but the dimensions of the discharge electrodes are still maintained relatively small as compared with the distance between the collecting-electrodes. With discharge electrodes of this substantial construction, tensioning-means are unnecessary and the bars may be supported at their upper ends or lower ends only, and it is possible to provide adequate jarring means for detaching collected material. For this purpose it is preferred to impart a downward blow to the electrodes; thus, hammers 18, Fig. 3, actuated by levers 22 rocked by chains 21, are adapted to strike plates 23 attached to the collecting-electrodes 1; the knocking-devices for the discharge electrodes 2 comprise hammers 25, Fig. 3, pivoted on the insulated frame 14 carrying the electrodes, and adapted to impart a vertical blow thereto and to be actuated bv a flexible means 27 provided with insulating-sections 28. Specification 5969/03 is referred to.
Patent GB-957549-A (GB)
Title: Improvements in or relating to heating or cooling jackets for extrusion presses or extruders
IPC: B29C48/03
Filed: 1962-07-23
Abstract: 957,549. Extruding. GEB. BOHLER & CO. A.G. July 23, 1962 [July 29, 1961], No. 2815/62. Heading B3P. A cooling or heating jacket for the container of an extrusion press comprises a shell 1 with separate end plates 3 formed with annular ducts 4. The shell has ducts 2 for heating conductors communicating with the annular ducts.
Patent GB-631856-A (GB)
Title: Improvements in or relating to constructional materials
IPC: C04B28/26
Filed: 1947-10-22
Abstract: A wallboard, block, tile, slab, or the like is formed by mixing china clay with a solution of sodium silicate to form a cream, and then adding exfoliated vermiculite to form a plastic mass, which is then rolled or otherwise formed between sheets of paper, chipboard, or the like into the required shape and dried, preferably in air at 60 - 70 DEG  F. for 10 - 12 hours or in air for 5 - 6 hours and then in an oven for about 1 hour at 266 DEG  F. Asbestos or other inorganic filler, or sawdust, flax, shives, peat, bark, straw, reeds, or other fibrous material may be incorporated, and if a waterproof composition is required sodium silicofluoride may be added to the sodium silicate. Specifications 557,370 and 557,371 are referred to. Reference has been directed by the Comptroller to Specification 627,532.
Patent GB-458204-A (GB)
Title: Improvements in gun turrets for aircraft
IPC: B64D7/02
Filed: 1935-10-14
Abstract: 458,204. Aircraft gun turrets. NORTH, J. D., Hill House, Eaton Hill, Norwich. Oct. 14, 1935, No. 28259. [Class 4] [See also Group XXI] Gun turrets 2, Fig. 3, protruding from aircraft, are provided with shields 3, 4 to reduce air resistance, the shields being automatically retracted, by means controlled by the rotation of the turret, when they obstruct the field of fire. In the form shown, the shields are hinged at 6 and supported by links 10 connected to a spring-pressed piston within a ram cylinder 8. Pressure fluid is supplied to the ram by way of a valve 12, the arm 18 of which is actuated by a cam 13 on the turret to admit pressure to expand the ram and lower the shield. Fig. 4 shows a shield which is lowered by a pivotal sliding movement.
Patent GB-231401-A (GB)
Title: Improvements relating to hub caps for motor vehicle wheels
IPC: B60B7/00
Filed: 1924-11-26
Abstract: 231,401. Briscoe & Co., Ltd., W. H., and Briscoe, E. C. Nov. 26, 1924. Hubs. - To provide rigidity in a hub cap, the flange a is a flat ring cut from iron, steel or like plate, the cap e being thinner and formed of brass, nickel, aluminium or the like, and passing through a central aperture b in the flange a. A narrow lip f in the cap fits a recess c in the flange, and the parts may be permanently connected by indenting or spinning over portions of the flange near the lip. Holes d for the fastening bolts are formed in the flange.