baber/WOPTO huggingface dataset:
Patent GB-391697-A (GB)
Title: Improvements in sliding clasp fasteners
IPC: A44B19/06
Filed: 1932-10-17
Abstract: 391,697. Angular bending. GUTBERLETT, H., 108, Bendahlerstrasse, Barmen, Germany. Oct. 17, 1932, No. 28975. [Classes 83 (ii) and 83 (iv).] Making fastenings.-An element of a sliding-clasp fastening is formed with recesses 5 so that the head 3 is not deformed when the legs 2 are pressed together to mount the element.
Patent GB-1439848-A (GB)
Title: Temperature actuated connectors and actuators
IPC: H01R12/85
Filed: 1973-06-19
Abstract: 1439848 Releasable fastenings; clamps RAYCHEM CORP 19 June 1973 [21 June 1972] 29009/73 Headings E2A and E2B [Also in Divisions Gl Hl and H2] A connector or actuator which undergoes 'snap action' at a transition temperature or temperature range comprises two interacting spring members, at least one of which exhibits a large variation in force/deflection characteristics on passing through the transition temperature or range and at least one of which has a non-linear force/deflection curve having a maximum through which it passes during 'snap action'. Preferably only one spring member exhibits a substantial variation in force/deflection characteristics, the other member exhibiting a substantially negligable change, and it is this former member which preferably also possesses the non linear force deflection curve. In one embodiment, Figure 1, electrical contact is established between a printed circuit board 23 and a base 22. A leaf spring 21 has the non-linear characteristics, the phantorn line position being assumed below the snap action temperature or range. In another embodiment, Figure 2, a leaf spring 33 is situated in grooves 34, 35 at the ends of a forked spring 30. In yet another embodiment, Figure 3, an object 46 is clamped between the free ends of two cantilever springs 40, 41 whose separation depends upon a leaf spring 43 mounted therebetween. At temperatures above the snapaction temperature, the leaf spring extends to force the free ends apart. The materials of the two spring members may, in each embodiment be reversed so as to cause(dis) connection or actuation in the response to a decrease in temperature. A spring member having non-linear characteristics may be a longitudinally loaded leaf spring, as shown, or a Belleville spring. The member having the large variation in characteristics with temperature may be a polymer or elastomer, or a so called "memory metal" e.g. alloys of titanium and nickel, cadmium-gold, copperaluminium-nickel, indium-thallium, uraniummolybdenum, and uranium-niobium. The actuator may be employed for opening and closing valves.
Patent GB-979336-A (GB)
Title: Improvements in and relating to half-tone positives
IPC: G03F5/14
Filed: 1962-07-30
Abstract: 979, 336. Half-tone positives for photomechanical printing. A. W. JEMSEBY. July 30, 1962, No. 29109/62. Headings G2C and G2M. A method of making half-tone positives comprises contacting a continuous tone negative with a photosensitive layer, superimposing thereon a screen wherein either the transparent and opaque elements gradually merge with each other or wherein The transparent elements have a lenticular effect at least within the portions bordering the opaque elements, and exposing through at least one further screen or a transparent half-tone positive taken from the negative. On development both large and small half-tone dots are formed in the brighter areas and only the smaller dots are then etched away leaving the larger dots widely spaced. The procedure is stated to simplify the etching step by giving a greater margin of error in the highlight areas. One or more light sources may be used when the screens are closely disposed but when they are more widely spaced a single punctiform source should be used. The embodiment wherein a half-tone positive is used as one of the further screens is stated to be of particular value in colour processes. In an example of the preparation of a colour corrected red separation half tone positive, a blue colour separation half tone positive is first made with a blue screen angle position using a plurality of screens; a screen of red screen angle is positioned on a continuous tone red colour separation negative and a photosensitive layer is then exposed through the assembly with the blue half-tone separation positive in register for the first part of the exposure. Specification 926,333 is referred to.
Patent GB-621157-A (GB)
Title: Apparatus for making ice cubes
IPC: F25C1/10
Filed: 1946-09-30
Abstract: 621,157. Ice -making. DEHN, S. G. (Barium Steel Corporation). Sept. 30, 1946, No. 29146. [Class 29] An ice-cube making apparatus comprises a rotary drum having individual moulds fixedly disposed round its periphery, the drum being rotatable within a stationary jacket containing water for freezing, a cold brine spray being located within the drum. A casing 10, 11 contains the rotatable drum 25, 26 on bearings 20 with insulated end pieces, through the centre of which runs a shaft 14 containing an inlet pipe 28 for cold brine fitted with sprays 28a and an outlet pipe 29 for warm brine fitted with a down-turned portion 29a which dips into a brine pool in the bottom of the drum. Around the drum 25, 26 is a semi-cylindrical water jacket 30, 31 carried on rollers 33, fed with cold water by a pipe 65 and tiltable by a sprocket 35 and rack 34 to empty the water into a perforated chute 52 whence it flows around heat exchangers 62 to pre-cool the incoming water supply. The drum 25, 26 is surrounded by a honeycomb rubber mat 36, each cell of which is fitted with an open-bottomed metal liner 38 of less height than the cells formed with out-turned bottom flanges 39 which contact the metal surface of the drum. Under each longitudinal row of cells runs a bar 42 with up-turned end fingers 47 and with plates 41, one of which lies in the bottom of each cell. When the cells have been filled with accumulated ice, the jacket 30, 31 is rotated by means of the ratchet 34 and a U-shaped bar 49 is brought into the path of the fingers 47. The drum 25, 26 is rotated and the U-shaped bar 49 turns the bars 42 in succession, the plates 41 forcing each ice cube out of its cell, and into the ice chute 52 whence they fall into a harvesting drawer 13.
Patent GB-183791-A (GB)
Title: Improvements in or relating to methods of and apparatus for cleaning the felts of paper machines
IPC: D21F1/32
Filed: 1921-11-02
Abstract: 183,791. Walker, G. K. July 26, 1921, [Convention date]. Felts; guiding and stretching mechanism; suction apparatus.-In cleaning the felts, of paper machines, particularly modern high-speed machines, during the paper-making operation, a cleansing-liquid is applied periodically to the dirty felts, and the liquid and dirt withdrawn by suction sufficiently powerful to remove substantially all the liquid from the felt at each passage over it. The liquid is applied, either direct on to the felt or on to a roll over which the felt passes, by jets from pipes 45, which may be connected to the ordinary water supply or to a warm or hot water supply, with or without the admixture of chemicals. A suction box 29 is connected by flexible connections and pipes 40, 41 to a vacuum pump, and is mounted in guides 31, Fig. 3, in which it can be raised into contact with the felt by cams 35 or other means operated by a hand-lever 36. The cover, Fig. 7, for the suction box, which exerts a spreading or stretching action on the felts, consists of a number of blocks 50 recessed as at 51 and oppositely inclined about a central triangular piece 53, as shown. An auxiliary slot 55 in the cover, extending across the full width of the felt, effects the suction of any portion of the felt that may have been masked by its spreading along the blocks 50. Inclined troughs 48, fixed to the side of the suction box, catch the drip from the outer edges of the suction box and lead it away.
Patent GB-330475-A (GB)
Title: An improved locking device for locking the steering handle, driving wheel or bar, of all motor or power driven vehicles, bicycles, tricycles, and attachments or parts ofsame
IPC: B60R25/022
Filed: 1929-09-26
Abstract: 330,475. Parsons, V. D. Sept. 26, 1929. No Patent granted (Sealing fee not paid). Locking while standing.- A locking device for the steering wheel of a motor car comprises a telescopic arm which is locked against extensions either by a key operated detent in the sleeve or by a detachable split ring 15 carrying a detent 16 which is adapted to project into the sleeve. The telescopic arm comprises a sleeve 5 connected by a universal joint to a collar 1 on the steering pillar and a sliding member 19 connected by a universal joint to a lock 6 adapted to embrace a radial arm of the steering wheel.
Patent GB-1347837-A (GB)
Title: Glass ceramic material
IPC: C03C10/00
Filed: 1972-06-22
Abstract: 1347837 Glass ceramics CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 22 June 1972 [1 July 1971] 29248/72 Heading C1M A transparent glass ceramic produced from a glass, which has been melted and shaped and thereafter subjected to a heat treatment for the controlled crystallization of innumerable, irregularly oriented, minute crystals of the structural type of #-quartz, wherein the glass ceramic has the following composition calculated as oxides on a percentage by weight basis: SiO 2  40-70, Al 2 O 3  15-30, P 2 O 5  0-10, Li 2 O 2-6, MgO 0-5, ZnO 0-8, ZrO 2  2-10, Ta 2 O 5  1-10, BaO and/or CaO 0-2, rare earth oxide(s) and/or yttrium oxide 0-12, refining agent(s) 0-5, Na 2 O and/or K 2 O 0-5; the contents of Li 2 O MgO, ZnO and P 2 O 5  being such that the Al 2 O 3  content, to within Œ4% by weight of the composition, is sufficient for forming the compounds LiAlO 2 , MgAl 2 O 4 , ZnAl 2 O 4  and AlPO 4 . The glass ceramic has a thermal longitudinal expansion of less than 15 Î 10<SP>-7</SP>/‹ C. in the temperature range 20-300‹ C. A suitable heat treatment would comprise heating the article up at about 10‹ C./hour to a temperature of 820-860‹ C., left at this temperature for 2 to 6 hours and then cooled at approximately 100‹ C./hour. More rapid heating procedures are also possible in which case a residence time of 2 to 4 hours at 680-750‹ C. is desirable.
Patent GB-1079330-A (GB)
Title: Regeneration of weakly acidic cation exchangers charged with detergents
Inventor: OEHME CHRISTIAN
IPC: B01J49/53
Filed: 1966-06-29
Abstract: Weakly acidic cation-exchangers, usually polyacryl, are regenerated after use in removing non-ionic detergents by treating with alkaline solution washing out with water and subsequently treating with a dilute aqueous mineral acid.
Patent GB-632661-A (GB)
Title: Improved process for the preparation of vinylpyridines
IPC: C07D213/127
Filed: 1946-10-02
Abstract: Vinyl substituted pyridines which may contain a nuclear alkyl substituent containing preferably no more than 4 carbon atoms in the substituent radical, or vinyl substituted quinolines, are obtained by bringing the corresponding beta-pyridyl- or beta-quinolylethanol compound into contact with an alkali metal hydroxide at a temperature of at least 130 DEG  C. and at a pressure below 100 mm. of mercury at which said ethanol compound is not distilled off at an appreciable rate but at which the vinyl pyridine compound distils rapidly, removing the reaction products by distillation as rapidly as formed and isolating the vinyl pyridine compound therefrom.  Any alkali metal hydroxide or mixture containing at least one alkali metal hydroxide may be used as catalyst, e.g. sodium or potassium hydroxide.  Specified pyridyl ethanols are 2- and 4-(beta-hydroxy-ethyl)-pyridines and 2-(5-ethylpyridyl) ethanol. Other groups that may be present on the pyridine nucleus include methyl, propyl, and butyl.  Also operable are the quinolyl ethanols, e.g. 2-quinolyl ethanol.  It is preferred to operate at temperatures between 160 DEG  and 200 DEG  C. and at pressures of 10 to 30 mm. of mercury, but pressures as low as 5 mm. may be employed.  In an example: 2 - (beta hydroxyethyl) - 5 - ethyl pyridine is added dropwise to sodium hydroxide pellets contained in a vessel at 10 to 15 mm. of mercury pressure and heated by a molten metal bath maintained at 180 DEG  C.  The 5-ethyl-2-vinyl pyridine and water produced distil from the vessel as rapidly as they are formed.  The products may be polymerized or copolymerized with other polymerizable unsaturated compounds, e.g. styrene.  Pyridyl ethanols may be obtained by reacting formaldehyde with a substituted pyridine which has a methyl group in the alpha or gamma position such as alpha or gamma picoline.
Patent GB-1163568-A (GB)
Title: MOS field effect transistor amplifier apparatus
IPC: H03F3/345
Filed: 1967-06-27
Abstract: 1,163,568. Transistor amplifier circuit. WESTINGHOUSE ELECTRIC CORP. 27 June, 1967 [15 July, 1966], No. 29479/67. Heading H3T. [Also in Division H1] A M.O.S. field effect transistor circuit employs a further field effect transistor, maintained in a cut-off condition, as its gate bias impedance. The two transistors are formed as a single integrated element.
Patent GB-707545-A (GB)
Title: Improvements in and relating to the welding of studs and the like by means of alternating currents
IPC: B23K9/20
Filed: 1950-12-01
Abstract: 707,545. Supply systems for welding arcs. SARAZIN, J. L., SARAZIN, S. A., and MONEYRON, M. Dec. 1, 1950 [Feb. 2, 1950], No. 29502/50. Class 38 (4). [Also in Group XXII] In stud welding apparatus a pistol has a stud supporting head movable from the work by a coil fed with direct current controlled by a time switch and a switch is provided which is closed at the same time as the coil is energized, to supply between the spaced stud and work an alternating welding current on which is superimposed a high voltage high frequency current. A stud welding pistol 1 is connected through a switch 13 with a high voltage high frequency generator 4 in series with one side of a transformer secondary 9, the other side being connected to the work 27. The gun 1 comprises a coil 31 in the plastic body which surrounds an armature 46 separated from a fixed member 45 by a spring 47 and a head 21 supporting a stud 23 and connected to the armature 46. The coil 31 is connected through a switch 36 to a rectifier 37 supplied from a transformer 38. A switch 43 in the handle 17 controls the energization of a coil 39 through a time controlled relay 40, the coil 39 actuating the switches 13, 36 simultaneously. In operation the switch 43 is pressed to close switches 13, 36 thus energizing coil 31 to raise the armature and hence the stud 23 clear of the work 27. The welding current on which is superimposed the high frequency high voltage current strikes an arc and after a time interval the coil 39 is de-energized to open the switches 13, 36. The stud 23 is then thrust into the molten workpiece. In a modification of the electrical circuit separate time switching means are provided for each switch corresponding to 13, 36 so that e.g. the stud may be thrust downwards with the current still flowing. Specifications 580,702 and 601,459, [both in Group XXII], are referred to.
Patent GB-640730-A (GB)
Title: Manufacture of high acetyl cellulose acetate films
IPC: C08L1/12
Filed: 1947-11-05
Abstract: High-acetyl cellulose acetate cine film stock is produced by a continuous process comprising dissolving cellulose acetate of acetyl content 42.5-44 per cent in a solvent mixture composed of 55 to 85 per cent by weight of methylene chloride, 15 per cent to 5 per cent of methyl or ethyl alcohol and 30 per cent to 10 per cent of ethylene chloride, continuously casting the resulting solution in the form of a film on a moving film-forming surface maintained at 50 DEG  to 90 DEG  F., removing a part of the solvent from the film, removing the film from the film-forming surface while the film is in the form of a strippable coagulated sheet 100 per cent to 125 per cent thicker than it is to become when completely cured, and removing residual solvent from the film.  The cellulose acetate preferably has an acetyl content of 43 to 43.5 per cent. The ratio of cellulose acetate to solvent mixture may be approximately one to five or one to eight.  In one example, cellulose acetate of 43.5 per cent acetyl content is dissolved in a mixture of methylene chloride, ethylene chloride and methyl alcohol and triphenyl phosphate is added to the solution.  The solution at 80 DEG  F. is fed into the hopper of a film-casting machine from which it is passed to a casting wheel at a temperature of 75 DEG  F., from which it is stripped after a casting time of 4 minutes.  The cellulose acetate may have a viscosity characteristic of 3000-10,000 centipoises as determined at 25 DEG  C. in a 10 per cent solution using a mixture of methylene chloride 90 per cent, and methyl alcohol 10 per cent, as solvent. Specification 640,731 is referred to.
Patent GB-322588-A (GB)
Title: Improvements in telescopic lifting-jacks
IPC: B66F3/30
Filed: 1928-10-15
Abstract: 322,588. Tangyes, Ltd., and Chapman, H. W. Oct. 15, 1928. Jacks. - A multiple-extension fluid-pressure jack is provided with resilient means which check the outward movement of the inner ram when near its fullv extended position until the outer ram has reached its maximum extension, the pressure fluid then completing the extension of the inner ram and so exposing a relief passage for excess fluid. The inner ram 4 is fitted at its lower end with a transverse rod 7 arranged in a slot 8 and pressed upwards by a spring 11. When the ram is raised so that the rod contacts with the cap 3<b> of the outer ram 3, the outer ram is raised and when it has reached its full extension continued pumping causes the compression of the spring and further raising of the inner ram, so exposing a relief passage 6. In a modification a spring encircles the lower end of the inner ram.
Patent GB-1165733-A (GB)
Title: Improvements in Vehicle Braking Systems
Inventor: WILSON ALEXANDER JOHN
IPC: B60T8/34
Filed: 1966-07-02
Abstract: 1,165,733. Deceleration responsive brake system. GIRLING Ltd. 26 June, 1967 [2 July, 1966], No. 29784/66. Heading F2F. Brake-applying force on a piston 48, pivots a resilient lever 30 about a fulcrum pin 33 and is resisted by a deceleration responsive arm 26 acting on the end 36 of the lever 30, an intermediate point on the lever acting on a brake control valve spindle 53. The valve comprises a head 58 seated by a spring washer 60 on a member 59 to control air flow from an aperture 64, filter 62, passage 66 and bores 65, 67, to an outlet 68 connected to a servo-operating the brakes. In the completely unoperated position, the piston 48 is disengaged from the lever 30, and the adjacent end of the lever is urged by a spring 34 until the pin 33 engages the opposite end to that shown of a slot 32 in a lug 31 attached to the lever, whereby the lever acts about a different fulcrum 37 to apply a force at 36 to the arm 26, via a thrust member 29. Movement of the piston 48 to the right (as shown) compresses spring 34 and maintains pressure on the deceleration responsive arm 26. The latter is pivoted about its upper end (as shown) to an arm 25 fast with a spindle 14 driven by the vehicle wheel(s). A flywheel 11 is mounted by bearings 13 on the spindle and, with constant wheel speed the flywheel attains the same speed as the spindle. Relative rotation between the flywheel and spindle, due to deceleration of the latter, causes relative motion between a ball 28 carried at the end of arm 26 and the adjacent face of the flywheel, causing the ball to run up a ramp 27 and force the arm 26 to the left about its pivot. The resulting force acting on the spindle 53 of the brake control valve 54 tends to close the valve, thereby limiting braking to avoid locking and skidding, and the resilient nature of the lever ensures that below a certain value of input force on the piston 48, the braking is proportional over a range to the input force. Above this value the brake valve 54 is fully open.
Patent GB-533483-A (GB)
Title: Improvements in yarn winding machines
IPC: B65H54/42
Filed: 1939-11-10
Abstract: 533,483. Winding yarns. ABBOTT MACHINE CO. Nov. 10, 1939, Nos. 29836 and 29837. Convention dates, Nov. 16, 1938 and Nov. 6, 1939. [Class 120 (ii)] In an automatic yam-winding machine having mechanism for rotating the normally winding package in an unwinding direction for finding the end of a broken or exhausted yam on the surface of the package, which end is then carried to a knotter for tying it to the end of the supply or reserve yam, a brush element is driven in the opposite direction to that of an unwinding roll to brush up the end of the yarn on the package, and the unwinding'roll and the brush element are relatively positioned so as to act on the surface of the package on approximately a common line of action ; means is also provided for receiving the brushed up end of the yarn. As shown, the unwinding roll is in two parts 111a, 111b spaced apart on the shaft 111c with the brushing element 18 loosely mounted on the shaft between them. A worm 27 on a shaft 26 drives the shaft 1 lie and a second worm on the shaft drives a shaft 31b geared to the brushing element to rotate the latter in a direction opposite to that of the unwinding roll. The brushing element may be formed by a surface of plush on a roller 16 or by flaps of leather secured tangentially to the roller. The unwound and brushed-up end is taken to the knotter by a suction tube 108 the mouth of which is located adjacent the common line of action of the brushing element and the unwinding roll. Specifications 459,357, 459,413, 459,414, 459,429, 459,430, 489,435 and U.S.A. Reissue Specification 18,310 are referred to.
Patent GB-292836-A (GB)
Title: Improvements in portable electric lamps
IPC: F21L4/00
Filed: 1927-11-08
Abstract: 292,836. Rogge, B. Nov. 8, 1927. Battery lamps.-In a portable electric lamp the reflector, or the top cap, or both, are directly connected to the switch member so as to be moved with it with respect to a stationary incandescent bulb to vary the illumination. In the form shown in Fig. 2, the top cap 4 carrying a lens 5 is fitted with a strip 7 which is resiliently slipped over the switch knob 6 and the reflector 10 is fixed. In the form shown in Fig. 4, the reflector 10 is fixed to the contact spring 8 of the knob 6 and the top cap may carry a lens or a plane glass. In the form shown in Figs. 5 and 7, the reflector 10 is fixed to the top cap 4 which carries a lens 5 or a plane glass and is provided with a bayonet slot 11 for engaging over the knob 6. The shank 12 of the knob 6 is provided with a collar 12<1> capable of engaging a recess 14 at the end of the transverse arm of the slot 11, and which may be pushed into a recess 14<1> in the casing 1. This allows the cap to be removed only when the lamp is switched off. Fig. 8 shows a slight modification in which the lens 5 has an octagonal flange fitting into an octagonal flange 23 on the lens cap 4 which is secured to the casing 1 by means of a spring-pressed pin 20 engaging a slot 19 in an apron 18 depending from the cap. Fig. 11 shows a stand or bicycle lamp in which the switch member is in the form of a nut 6<1> engaging a screwed spindle 14 connected to the reflector 10. A rail contact is carried by a cylinder 16 at the rear of the reflector and engages a spring contact fixed to an internal partition 17.
Patent GB-227581-A (GB)
Title: Improvements in means for supporting automobile or similar engines on a chassis or frame
IPC: B60K13/06
Filed: 1923-11-28
Abstract: 227,581. Vidal, C. H. Nov. 28, 1923. Motors, mounting or supporting.- In a method of supporting the engine by means of two rigid bearers at one end and a trunnion or swivel at the other end, the trunnion is also adapted to serve as a crank case vent. An annular part E in the trunnion open to the interior of the crank case communicates through openings F with a recess C<1> in the supporting bearing, the recess being connected to an opening G at one end of the transverse support.