baber/WOPTO huggingface dataset:
Patent GB-549993-A (GB)
Title: Improvements in or relating to variable speed transmission gear
Filed: 1941-06-13
Abstract: 549,993. Variable-speed gearing. GUY, S. S., and BULLOCK, W. E. June 13, 1941, No. 7462, [Class 80 (ii)] In variable-speed transmission gearing for motor vehicles embodying a manually controlled mechanically operated variable speed gear, there is associated with the main clutch a fluid pressure system arranged so that the clutch is automatically disengaged during and in consequence of the initial movement of the gear change lever in making a change of gear, such fluid pressure system remaining inoperative with respect to the clutch at all other times. As shown, the clutch 4 between the engine 2 and variable speed gear 3 is actuated by a lever 12. The latter is connected by a rod 11 to a fluid pressure servomotor 5 which when the clutch is engaged is open through a valve 6 to a relief pipe 7. When the gear change lever 10 is moved to change gear, a lever 9 associated therewith operates the valve 6 to disconnect the pipe 7 and connect a pressure pipe 8 to the servomotor 5 whereupon the clutch is disengaged. After the initial movement of the lever 10 the valve 6 is restored to its initial position and the clutch is re-engaged. A tail clutch 13 may be disengaged simultaneously with the main clutch by connecting it to the lever 12 by links 14, 15, 16.
Patent GB-289605-A (GB)
Title: Improvements in box making machines
IPC: B31B3/46
Filed: 1927-03-17
Abstract: 289,605. Maschinenfabrik Laube, K.. und R. Laube, and Uhlig, G. W. A. March 17, 1927. Feeding box blanks from piles.- Relates to a machine for making box bodies or lids in which rectangular blanks are fed between the upper and lower stamps of a press where the blank is cut to cruciform shape and the side flaps thereof bent down at right angles to the central portion. The blanks 1 are fed from a magazine 2 by a reciprocating pusher 5 which carries an abutment 42 and a locking- bar 41 is held in engagement therewith, against the action of a spring-controlled lever 45, by reason of a finger 38 on a lever 35 engaging a notch in the bar. When a formed box &c, is ejected from the press it strikes a surface 37 carried by the lever 35 which is pivoted to the machine frame and the lever 35 is moved to remove the finger 38 from the notch in the bar 41 which is then moved by the lever 45 out of engagement with the abutment 42 and the pusher 5 then moves forward to feed a blank to the press; on the the return movement of the pusher a second abutment 44 thereon moves the lever 45 to re-engage the bar 41 with the abutment 42; should a formed box &c, not be ejected against the surface 37 the pusher 5 remains locked against movement. The pusher 5 carries small knives 10 which project above the feed table 3 a distance equal to the thickness of a blank which is fed through a gap 11 between the table and a surface 13 carried by a slide 14 adjustably mounted on the side of the magazine.
Patent GB-784298-A (GB)
Title: Improvements in or relating to portable partition-forming structures
IPC: E04B2/74
Filed: 1955-03-15
Abstract: 784,298. Partitions. FRENCH, W. G. March 15, 1955, No. 7596/55. Class 20(4) A partition structure comprises a post and one or more panel units, each unit including a re-entrant vertical part shaped to conform to the configuration of the post and external bevel faces adjoining the defining. edges of the re-entrant part, and resilient means holding each unit in contiguous relation with the post. As shown for a post 1 having sides 5 with bevelled corners 6, each panel unit 2 has end rails 8 with a channel 9 to mate with the bevels 6 and bevelled faces 10 at right angles thereto. so that units 2 may extend from one, two, three or four sides of a post, as shown in Fig. 3. The units 2 may comprise side panels 11, bent to form the end rails 8, spaced by channel pieces 12 adjacent each end. A concealed connection as disclosed in Specification 784,302 is used, the posts 1 being provided with studs 7 having a head 7a to engage keyhole slots 14 in leaf springs 13 secured to the channel pieces 12 which have similar slots 14a. In a modification (Fig. 7, not shown) a post of circular cross-section is used and a separate end rail is formed with an arcuate channel to mate therewith and having bevelled edges 10. The leaf spring is secured direct to the end rail and the studs 7 may be anchored in the wooden post by means of a cruciform nut as in Specification 784,302. As shown in Figs. 3, 5 and 9, the upper part of the posts 1 may be used to hold glass or plywood panels 3 by means of channel units 18 as disclosed in Specification 784,300, the panels 3 seating in longitudinal grooves 15 in their upper edges 16, the grooves 15 being lined with rubber when the panels 3 are of glass. In order to allow for uneven floors, each post 1 may have an adjustable foot 25 comprising a foot 26 with a threaded bolt 27 engaging a nut 28 mounted in a flange 29 fixed across the lower end of the post 1. As in Fig. 5, where the lower edge 30 lies above the floor, a sleeve 31 sliding over the post, is used to conceal the foot 25. As in Fig. 9, where a closed base is required, base panels 32 are removably supported by plates 35 secured together by clips 36, the plates 35 being bent at their lower ends to form feet 37 with upstanding flanges 38 and at their upper ends to form spaced arms 39 which clip over the lower edge 30 of the panel unit 2, the arms 39 being offset at 40 to provide flanges 41. The base panels 32 are held on the flanges 38 and 41 by flanges 34 and 33 formed by bending of the lower and upper edges of the panels. The tops 16 of the panel units 2 may be covered by a rail 42, as in Fig. 9, where top panels 3 are not used.
Patent GB-258628-A (GB)
Title: Improvements in and relating to stencil sheets adapted for use in duplicating
IPC: B41N1/24
Filed: 1925-03-20
Abstract: 258,628. Waele, A. de. March 20, 1925. Stencils. - In coated shoots adapted to be formed into stencils for use in duplicating of the kind in which the coating-composition comprises a gelatinizing organic colloid, the essential gelatinizing component of the composition consists of a derivative of a liquid ester of a fatty acid such as an oil or fat, in the state of a coherent gel. Examples of suitable derivatives are polymerized oils, oxidized oils, ozonized oils, and compositions derived from oils by treatment with manganese, nickel, cobalt, iron, or lead. Volatile solvents such as ether, carbon tetrachloride, or chloroform may be included in the composition to delay its gelation, and, solid tempering agents, preferably consisting of opaque, light-coloured pigments, or liquid tempering agents, such as mineral oils, may also be added. Bentonite or other material may be added as described in Specification 228,248 to prevent exudation of the liquid tempering agents. In one process, sheets of Yoshino paper are coated with linseed oil, rape oil, nut oil, blown linseed oil, or blown rape oil, or mixtures of these with or without partial saponifioation by lime, magnesia, or zinc, or with added lime, magnesia, or zinc soaps of fatty acids, and the coated sheets are exposed to the action of sulphur chloride fumes. In a second process, the coating-composition comprises oils as above mixed with 5 to 10 per cent sulphur chloride, the coated sheets are maintained at a low temperature to retard the gelation, and are then subjected to a higher temperature and simultaneously to the action of sulphur chloride vapour.
Patent GB-991771-A (GB)
Title: Methods and apparatus for processing thermoplastic yarns
IPC: D02G1/10
Filed: 1962-02-27
Abstract: 991,771. Finishing yarns. DEERING MILLIKEN RESEARCH CORPORATION. Feb. 27, 1962 [Feb. 27, 1961], No. 7613/62. Heading D1F. [Also in Division B5] A method of processing a running length of thermoplastic yarn which is in such a state that on heating it will increase in bulk and shrink in length, comprising positively overfeeding the yarn through a narrow elongated tube which is heated so that each part of the yarn becomes heated to processing temperatures of 100C. to 225C. for at least 1/ 2  second, the temperature not exceeding the sticking temperature of the yarn, the overfeed being between 1% and 25% and less than the maximum amount of shrinkage possible at the processing temperatures, and the tube being associated with means for positively passing gas through the tube with the yarn so that the total rate of flow through the tube is substantially greater, e.g. by 10-50% than the rate which would be induced by windage. Preferably the yarn has had latent stress induced in it by edge crimping. The yarn may be a multifilament of denier e.g. 300-15, 000, and may be formed from e.g. nylon, polyester, cellulose triacetate, polypropylene or polyvinyl alcohol. The yarn may be fed at 20 yards per minute, or more, into a tube 1 to 20 feet long and of inside diameter less than <SP>1</SP>/ 2  inch. The tube may be straight, bent, or coiled. The gas may be directed into the tube as a jet from a capillary, which may itself be heated, inserted into the entrance of the tube. Preferably, the linear velocity of the gas, e.g. compressed air, nitrogen or superheated steam, is greater than the linear velocity of the yarn in the tube. In one embodiment, (Fig. 1) thermoplastic yarn 2 from package 1 passes over tension regulator 5 and is fed by yarn advancing rolls 11, 12 to one end 31 of tube 30, which is heated by EMF source 36. Gas from supply 41 is injected into tube 30 from small heated tube 40. The gas emitted from open end 43 of tube 40 (Fig. 3) causes the overfed yarn 2 to billow into a loose structure 2a. As the yarn becomes heated, the overfed length is taken up as the yarn shrinks and becomes bulked 2b. The bulked yarn is taken up by second advancing rolls 21, 22, and is guided by means 50 to take up package 51. Tube 30 may be of stainless steel if electrically heated, or of glass, ceramic or chromeplated copper or brass if heated by the hot air from tube 40. In a further embodiment (not shown) the apparatus of Fig. 1 is incorporated in a unitary drawing, crimping and heat-processing apparatus. The yarn is first drawn e.g. 2: 1 to 10: 1 between a first yarn advancing means and second heated yarn advancing means e.g. a heated roll, and then edge-crimped by passage over a blade adjacent the heated roll before entering the heated tube 30.
Patent GB-817899-A (GB)
Title: Improvements in loudspeaking apparatus
Inventor: TAYLOR PAUL HARVARD
IPC: H04R1/40
Filed: 1956-03-12
Abstract: 817,899. Sound directive appliances. PAMPHONIC REPRODUCERS Ltd. March 12, 1957 [March 12, 1956], No. 7652/56. Class 13. [Also in Group XXXIX] The radiations from the individual loudspeakers or elemental portions of a line source column loud-speaker diminish away from the centre of the column according to a law approximating to a truncated set of binomial coefficients. As an example the 9 centre terms of a 13-term binomial series may be taken and 9 loud-speakers or elemental portions of an electrostatic loud-speaker may be fed with voltages corresponding to these terms.
Patent GB-471689-A (GB)
Title: A semi-perforated sprinkling crown cork for bottles
IPC: B65D41/42
Filed: 1936-03-14
Abstract: 471,689. Sprinkling-stoppers for bottles. DICK, G., and SHARPE, F. March 14, 1936, No. 7698. [Class 125 (iii)] A sprinkling-stopper for a bottle &c. comprises a crowncork a having a tongue or tongues e, which are partially severed or weakened in the metal portion of the stopper. In order to use the stopper a nail &c., is driven through the weakened portion whereupon the tongues assist in holding the gasket c in position..
Patent GB-492338-A (GB)
Title: Improvements in ophthalmic lenses and method of making the same
IPC: G02C7/02
Filed: 1937-03-16
Abstract: 492,338. Spectacle lenses. TENNANT, W. J. (American Optical Co.) March 16, 1937, No. 7700. [Class 97 (i)] Relates to lenses of the kind in which errors in the size of the visual impression of the image, as well as refractive errors of the eye, are corrected. According to the invention all the surfaces of the lens except the rearmost surface are computed so as, in conjunction with the known refractive index of the glass and a given value for the finished thickness of the lens, to change the size of the image in a known ratio, the rearmost surface being left free to be ground to the curvature required to correct refractive errors. Thus in a lens consisting of a single element, Fig. II, the front surface 1 is ground to the computed curvature to give the required change of size and the thickness of the blank exceeds by an amount x the given thickness t of the finished lens, so that when the prescription curve 2, Fig. III, is ground on the rear surface, the thickness is reduced to the value t. In the case of a lens consisting of two elements 3, 4, Fig. V, the curvatures of the surfaces 5, 6, 7 and the thicknesses t1, t2, t3 are computed to give the desired change of size, the rearmost surface being left free to be ground so as to give the refractive correction and to reduce the thickness of the lens 4 to the value t<3>. A set of blanks as above described can be made in which the size changes produced by the units of the set are regularly graded. A mathematical treatment is given in the Specification.
Patent GB-253988-A (GB)
Title: Improvements in checks for swing doors
IPC: E05F3/10
Filed: 1925-03-23
Abstract: 253,988. Hill & Co., Ltd., J., and Tomkins, H. March 23, 1925. Operating doors by springs; checks.-In a floor spring and check device the check casing is of square, oblong or other shape than circular in cross-section, as shown, for example, in Fig. 2. A check casing C of this form may be used in a floor spring as shown in Fig. 1. The check casing is connected by a link J and lever H to a sliding frame D that is movable by a door pivot P to compress a closing spring E on a rod DR, the movement of the casing C being guided by rollers N.
Patent GB-751251-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/30
Filed: 1954-03-17
Abstract: 751,251. Thermionic valves; electrode materials. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 17, 1954 [March 20, 1953], No. 7763/54. Drawings to Specification. Class 39 (1). A valve for very low-voltage operation has the grid coated with a material of higher work function than the grid material and the anode coated with a material of lower work function than the anode material. The resulting contact potentials give inherent negative bias to the grid, which can thus be worked without external bias; and an increased effective anode voltage, so that the anode supply can be less (e.g. 6 volts). The grid may be molybdenum coated with gold or platinum, while the anode may be nickel, nickel-clad iron, or aluminiumclad iron, coated with barium or caesium. The valve is preferably a tetrode as no secondaryemission dip can occur at such low voltages. Characteristic curves are given.
Patent GB-725347-A (GB)
Title: Method and apparatus for the dewatering of suspensions
IPC: D21C11/00
Filed: 1953-03-20
Abstract: 725,347. Filters. NYQUIST, B.S. March 20, 1953 [March 21, 1952], No. 7775/53. Class 46. Dewatering of suspensions on an inward-flow rotary drum filter is assisted by subjecting the cake, during its dehydration, to a vibrating motion, preferably along the filter surface, produced by a roller provided with projections such as flanges and rotating at a peripheral speed different from that of the drum. A roller 8 having longitudinal flanges 10 is rotated at such a speed that it moves through an angle a2 while the filter drum 2 moves through the smaller angle #. Each flange 10 will thus push forward a small quantity of the filter cake 11 through a distance corresponding to a flange pitch (the difference between α1 and α2). Within the roller 8 is journaled a shaft 9 having its centre of gravity positioned eccentrically, and being rotated rapidly so that the roller 8 is caused both to rotate and to vibrate. Instead of flanges the projections may consist of rod-like elements. The roller is positioned opposite the suction region of the drum, after the washing-sprays. The cake is delivered by a scraper into a screw conveyer.
Patent GB-1035392-A (GB)
Title: Torque control means for hand held power operated tools
Inventor: HOOPER LAURENCE VICTOR JOHN
IPC: B25B23/145
Filed: 1964-02-25
Abstract: 1,035,392. Nut runners. DESOUTTER BROS. Ltd. Jan. 20, 1965 [Feb. 25, 1964], No. 7869/64. Heading B3N. A hand-held pneumatically driven nut runner comprises a casing 3, housing a vane type motor 4, and an epicyclic reduction gear 5 which drives the socket 10 through a worm and wheel 8, 9, and a handle 2 hingeable on the body at 11. Air is supplied to the motor through a ball valve 16 operated by a trigger 17, through a poppet valve 30 into a passage 36, and then into passages 37 in hinge pin 11, and by way of shoulders on the pin, and passages 38, into a cavity 39. At the same time the air from cavity 21 enters bore 22 and passes through a transfer valve 25 into a space 29 at the end of valve 30. In operation, when a predetermined torque is exerted, handle 2 pivots, valve 29 is moved by a plunger 40 and the air is cut off from the bottom of valve 30. Valve 30 closes and the motor stops. An adjustable wedge 42 is provided so that the motor can be shut off when different torques are exerted.
Patent GB-565713-A (GB)
Title: Improvements in or relating to centrifugal purifying processes and separators used therein
IPC: B04B1/08
Filed: 1943-05-19
Abstract: 565,713. Centriftigal machines. STEVENS, A. H. (Sharpes Corporation). May 19, 1943, No. 7953. [Class 23] In a process for removing coarse impurities and fine impurities from a liquid, the liquid is subjected to two periods of centrifugations, either (a) by centrifuging the whole liquid to remove the coarse impurities and then passing on part of the liquid for further, more intensive centrifuging to remove the fine impurities, or (b) dividing the liquid into separate streams for centrifugal action on each to remove the coarse and fine impurities respectively, the streams afterwards uniting. Part of the liquid after removal of its coarser impurities, may byepass the second process and be returned for use. Fig. 3 shows a centrifugal rotor into which liquid is fed through a tube 12 and passes to a zone 13 for removal of the coarser impurities. A partition 15 guides the cleaned liquid to an outlet 17, but some of the liquid passes through a hole 21 to undergo further treatment, which is prolonged, in a zone 20, for removal of fine impurities. The second stream is discharged through an outlet 19. In a further arrangement, the two streams of liquid enter and leave the centrifugal machine along separate paths.
Patent GB-1493534-A (GB)
Title: Continuous metal casting plants
IPC: B22D11/115
Filed: 1975-02-26
Abstract: 1493534 Continuous casting ASEA AB 26 Feb 1975 [27 Feb 1973] 7969/75 Heading B3F [Also in Division B1] In at least one roller of at least one pair of rollers 11, 11<SP>1</SP> for withdrawing the cast strand in a continuous casting plant, there is arranged an electromagnetic, multi-phase stirrer 15 or 15<SP>1</SP>, producing a field moving parallel to the longitudinal direction of the roller, to stir the molten core. There may be at least one stationary stirrer in each of a number of roller pairs 11, 11<SP>1</SP>, 12, 12<SP>1</SP> and 13, 13<SP>1</SP>, the directions of the field movements varying from one pair to another. There may also be stirrers outside the rollers. There may be a stirrer in each of the rollers of the or each pair, the direction of the fields being the same in the stirrers of the same pair to provide rotation of the melt in transverse planes. They may be opposed if the strand is of large cross-section. To ensure breaking up of dendrites, the direction of field movement should differ at different parts of the casting path, e.g. be alternately in opposite directions. The direction may vary at longer intervals than from one pair to the next. The frequency f of the stirrer is such that p/T<SP>2</SP><f<2p/T<SP>2</SP> where T is the pole pitch in metres and p the strand resistivity in ohm mm<SP>2</SP>/m., f may be 50-60 Hz. but may be as low as 2-3 Hz. for a stirrer 2 mm. in length. There may be different frequencies along the strand; e.g. a higher frequency at the beginning and lower downstream.
Patent GB-287559-A (GB)
Title: Process of producing a substance for obtaining a high gloss and pure white colour on paper and the like
IPC: D21H17/14
Filed: 1928-03-15
Abstract: 287,559. Siebenhirtner Chem. Industrie-Werk Ges. March 24, 1927, [Convention date]. Pulp, adding special substances to.-A paper of high gloss and a pure white colour, suitable for art print papers, chrome cartons, substitute papers, and the like, is obtained by adding to the pulp a paste consisting of saponified stearine to which is added a heavy metal salt, preferably a zinc salt. According to an example, 10 parts of stearine are saponified with 20-25 parts of caustic potash or caustic soda. To this 200 lbs. of a 5 per cent solution of zinc sulphate are added and the necessary quantity of potassium or sodium silicate to obtain a substance of marketable consistency.
Patent GB-145856-A (GB)
Title: New or improved apparatus for washing and scrubbing coal gas and the like
IPC: B01D47/02
Filed: 1919-03-31
Abstract: 145,856. Brockway, F. G. March 31, 1919. Scrubbers and washers.-A washer or scrubber for coal-gas &c. comprises superposed tiers of primary and secondary troughs 3, 11 each having a preferably restricted inlet for the downwardly flowing gas and pipes 1 delivering a curtain of liquid centrally in the inlets, so as to carry some of the gas below the liquid in the troughs. Outlets 5 from the primary troughs contain metal or other scrubbing-material moistened by means of spraying-pipes 2 which also supply liquid to preferably ribbed or corrugated plates 19.
Patent GB-268358-A (GB)
Title: Improvements in processes and apparatus for the production of cold
IPC: F25D7/00
Filed: 1927-03-23
Abstract: 268,358. Bergl, K., and Dietrich, W. March 29, 1926, [Convention date]. Refrigerating, vacuum processes for; icemaking, can or mould apparatus for.-Volatile liquids such as methyl and ethyl alcohol whose vapours are soluble in water are evaporated in a vacuum produced by a water jet pump, the vapour being absorbed by and carried away with the water. The volatile liquid is fed through a funnel 4, pipe 5 and spray pipe 6 to charcoal, silica gel or similar absorbent material in an evaporator 1, and the vapour is exhausted through pipes 3, 2 by the jet pump 15. The evaporator may be arranged in a cooling-chamber or, as shown, may cool liquid in a surrounding heat-insulated container 12. Or ice-moulds 17 with flanged rims may be suspended in closefitting cylinders 16 depending into the absorbent material, in which case the space around the evaporator may constitute an insulating air space. The funnel 4 may screw down on to a rubber gasket and has fine apertures 9. The container 12 may have a draw-off tap. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also the following :- Refrigerating, special processes for.-Acetone may be used as the volatile medium. The medium is supplied through a funnel 21, Fig. 3 (Cancelled) to absorbent in an evaporator 19 placed in a cooling-chamber 23, and air is drawn through a pipe 26 to take up the vapour and convey it through a coil 25, which forms a cooler for the entering air, to catalytic material surrounding a heating chamber 28, where it burns flamelessly. The products may be exhausted bv a fan 31 or by a chimney which also induces the flow of air through the pipe 26. This subject-matter does not appear in the Specification as accepted.