baber/WOPTO huggingface dataset:
Patent GB-402271-A (GB)
Title: Improvements in typewriter covers and the like
IPC: B64C3/54
Filed: 1933-01-30
Abstract: 402,271. Typewriter covers. GRANGE, T., 156, Rue de la Roquette, Paris. Jan. 30, 1933, Nos. 2841 and 2842. Convention dates, Jan. 29, 1932 and Dec. 21, 1932. [Class 52 (i).] A typewriter cover comprises a series of sectors 3 pivoted about a horizontal axis 2. The sectors fit one within the other at the back of the machine and can be spread out fanwise to cover the machine. Each sector has a projection 8 engaging another projection 9 on the adjacent sector and a pad of felt &c. 10 ensures a dust proof joint. In a modification shown in Fig. 7, each sector has at the side, a circular hub with an opening 13 of the form of an arc of a circle. A pin 14 on each hub engages in the opening 13 of the adjacent sector and thereby ensures the carrying along of the succeeding sector in the opening or closing operation. A pad of felt &c. 15 on the inside edge of each sector ensures silent working, water-tightness &c. The cover may be made sheet metal, aluminium, plastic materials, imitation leather, &c.
Patent GB-222025-A (GB)
Title: Improvements in and relating to railway and like crossing signals
IPC: B61L29/26
Filed: 1924-02-04
Abstract: 222,025. Lahoda, F. Feb. 4, 1924. Track apparatus actuating signals other than on trains; wire and like compensators. - An automatically operated signal arrangement for railway crossings, to give warning of the approach of a train, comprises a rotatable upright signal 14 normally at right angles to the railway D and rotated through a right angle to display the signal to pedestrians &c. on the road B by means of a cable 21 passing round and secured to a pulley 20<a> at the foot of the signal. The cable is led round guide pulleys 22 to operating pulleys .19 carried by shafts 16 disposed transversely to the rail track at opposite sides of the crossing. Each transverse shaft carries a toothed segment 20 adapted to be engaged bv a rack on the locomotive, not shown, and thereby rotated a limited amount to operate the signal. The approaching train operates one segment to set the signal to danger, and after passing the crossing operates the other to return the signal. The signal may be a suitably inscribed board surmounted by a lamp 15. The cable may be led through guide tubes. Stops 31 secured to the cable engage the adjacent rail to limit rotation of the signal to a right-angle. Disposed at several points in the length of the cable are spring devices 25 comprising a crosshead 28, Fig. 6, secured to one cable end and slidable in a frame 26 secured to the other cable end. A spring 29 is disposed between the crosshead and the free end of the frame. These spring devices serve the double function of absorbing impact shocks, and of allowing further movement of the segments 20 and pulley 19 after movement of the cable has been arrested by the stops 31, so that the segment can be rotated far enough to allow the train-carried rack to clear it and is then returned by the springs to a position in which it can be engaged by the rack of the next train.
Patent GB-383118-A (GB)
Title: Improvements in or relating to cases or holders for toilet or other articles
IPC: A45D40/02
Filed: 1932-02-01
Abstract: 383,118. Cases for lipstick, pencils, &c. ROLOT & H. LEMASSON, G., Route de Dijon, Beaune, Cote d'Or, France. Feb. 1, 1932, No. 2949. Convention date, Feb. 3, 1931. [Class 18.] In a case for toilet articles, pencil, chalk, rubber, or other articles, in which the lid is opened and the contents are caused to protrude by manipulating an external knob, the knob shaft during the first part of the movement of the knob engages in a notch in a link pivoted to the lid of the case and lifts the link, thus causing the lid to open ; the shaft is then disengaged from the link and subsequent movement of the knob actuates the cup &c., and causes the contents to protrude. Movement of the knob in the opposite direction causes the contents to be withdrawn into the case and the lid to be closed. In an example, a lipstick 1 is held in a cup 2 and the knob 4 can slide in a slot 5 in a side of the case. The link 8 is pivoted at 9 to a pivoted lid 6 and the pivot attached to the link moves in an arcuate slot 10 in the case. The link 8 also obturates the slot 5 in the closed position, Fig. 2. The lid may swing forwardly or to the sides instead of backwardly; and the case may have any section. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the statement that the case may contain a lighter, spark indicator, or electric lamp. This statement does not appear in the Specification as accepted.
Patent GB-685593-A (GB)
Title: Improvements in the production of 2-cyanobutene-1.2.3.4-tetracarboxylic acid alkyl esters
Filed: 1951-02-07
Abstract: Cyanobutane-tetracarboxylic esters and other derivatives are obtained by the reaction of esters of fumaric and maleic acids with hydrogen cyanide in presence of basic catalysts such as alkali metal salts of weak acids, under various conditions, followed by conversion by known methods into other derivatives. The initial products are isomeric mixtures containing 2-cyanobutane 1 : 2 : 3 : 4-tetracarboxylic methyl or ethyl esters, when using the corresponding esters of fumaric or maleic acid.  Another example also describes a similar product from maleic di-(2-ethylhexyl) ester.  The cyanobutane tetracarboxylic methyl ester may be hydrolysed by acid, with loss of CO2 to give butane-1 : 2 : 3 : 4-tetracarboxylic acid.
Patent GB-953315-A (GB)
Title: Self-adjusting packing gland structure for a fluid actuated piston and cylinder assembly
IPC: F16J15/56
Filed: 1959-01-28
Abstract: 953,315. Packings. G. H. TREVOR. April 27, 1960 [April 28, 1959], No. 3000/59. Heading F2B. A gland structure for a reciprocating shaft 5, Fig. 1, is provided with a gland ring 7 which, together with a bearing bush 6, is mounted in a chamber 1A in surrounding relation to the shaft, the gland ring having such an outside diameter as to allow lateral movement in the chamber and therefore self-adjustment of the ring in accordance with wear of the bush, flat upper and lower surfaces and an annular groove 18 in its upper surface receiving a fluid-energized packing ring 16 for sealing engagement with the opposed end face of the chamber (when the gland ring is above the bearing bush) or the opposed end face of the bearing bush (when the gland ring is below the bearing bush). The gland is shown applied to the reciprocating piston 5 of a fluid pressure motor formed with cylinder ends 1, 2, either or both of which is fitted with the gland structure where the piston-rod 5 passes through them and is there guided by the bushing 6 which is a press-fit in a bore 1A in the corresponding cylinder end 1. In the example shown, the gland ring 7 is disposed between the bushing 6 and an end cover cap 23 with radial clearance 8 in the chamber 1A to allow lateral movement of the ring as the inclination of the shaft 5 in the bush 6 varies with wear of the latter. The ring 7 may either slidably engage the plane end faces of the bushing 6 and end cover cap 23 or it may be urged into sealing contact with the cover cap 23 by a coil spring 11, Fig. 3, or plate spring 12, Fig. 4. The sealing ring 16 in the groove 18 may be of U-shape and arranged so that pressure fluid reaching it via channels 14 in the periphery of the bushing 6 and the space 8 around the ring 7 increases the sealing effect of the ring 16. This effect may be facilitated by providing channels in the upper surface of the ring 7 to permit free flow of fluid to the ring 16. The modified gland ring shown in Fig. 3, in addition to being urged against the end cover by a spring 11, has three recesses housing sealing rings 20 engaging the piston-rod 5, two of which are vented at 21 to prevent pressure lock. The further modified ring shown in Fig. 4 is formed of two parts 37, 38 and houses either the usual split-ring packing or V-shaped packing elements which are compressed by a spring. In yet another modification, the gland ring 7 is positioned below the bushing 6 and held in place at its lower end by a retaining ring having lugs engaging in grooves in the gland structure. In the case of hydraulic motors using hydraulic fluid, channels 19, Fig. 1, connected between the channels 14 and piston-rod 5 provide for support movement of the fluid as the latter reciprocates to generate turbulence in the fluid disposed in the clearance 8 and between the ring 7 and end cap 23 to prevent this fluid drying out.
Patent GB-693750-A (GB)
Title: Improvements in and relating to methods of and apparatus for charging electric storage batteries
IPC: H02J7/00
Filed: 1950-02-07
Abstract: 693,750. Battery-charging systems. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 7, 1950 [Feb. 23, 1949], No. 3142/50. Class 38 (iv). Storage batteries 3, 4 are separately and sequentially given a partial charge at a high rate and are then connected in parallel and receive a final charge at a reduced rate. Closure of a main switch 7 energizes a charging rectifier 2 over transformer 6 and causes relays 14, 21 to pick up. The first relay shorts out a resistor 12 at contacts 13 and opens its contacts 22 to remove a by-pass around contacts 26 of relay 21 which, in picking up, causes (a) energization of contactor 15 (over contacts 26) to connect battery 3 to the rectifier and (b) de-energization of contactor 18 (at contacts 25) to disconnect battery 4 from the rectifier. Upon battery 3 attaining a predetermined voltage-say corresponding to 80 per cent full charge-relay 27 responds and, at its contacts 30, de-energizes relay 21. The conditions of contactors 15, 18 reverse, in consequence, so that battery 4 is put on charge and battery 3 disconnected. Relay 28 responds when battery 4 reaches a given voltage and thus causes relay 14 to drop out. Closure of its contacts 22 re-energizes contactor 15 and the batteries are now charged in parallel at a reduced rate determined by the resistor 12, which is now effective, charging continuing until the A.C. supply is interrupted by a time switch 8 which was set in operation by the drop out of relay 14.
Patent GB-881751-A (GB)
Title: Improvements in and relating to view finders
IPC: G02B23/14
Filed: 1958-01-30
Abstract: 881,751. View-finders. VOIGTLANDER A.G. Jan. 30, 1958 [Jan. 30, 1957; Jan. 31, 1957], No. 3152/58. Classes 97(1) and 98(1). In an Albada type view-finder comprising a transparent block 5 disposed between front and rear lenses 1, 8 and in which a fielddefining frame 11 is imaged at infinity by a partly transparent concave mirror through which the object is also viewed, the concave mirror is formed by or on one or both adjacent surfaces 4, 6 of the lens 1 and block 5, these surfaces being separated by an air gap which is sufficiently narrow as to discourage disturbing ' reflections while being sufficiently thick as to avoid interference phenomena. One or each of these surfaces 4, 6 may have a partly reflecting coating as of interference type and the frame 11, together with a central aiming point 12, may also be formed by deposition on the lens 8 of reflecting material. The frame carrying surface of lens 8 may be convex towards the block 5 and of a radius equal to or less than half the radius of the concave mirror. If the glasses of lens 1 and block 5 are of sufficiently high refractive index, no coating is required on the surfaces 4, 6 to form the concave mirror. Reflection reducing coatings may be provided on the front and rear surfaces 2, 10. Specification 881,752 is referred to.
Patent GB-786752-A (GB)
Title: Improvements in or relating to extensible articles of furniture
Inventor: COLLER WILLIAM ERNEST
IPC: A47C17/22
Filed: 1955-02-03
Abstract: 786,752. Bed-settees. NEWTH & SONS, Ltd., C. Jan. 19, 1956 [Feb. 3, 1955], No. 3267/55. Class 52(2) In a bed-settee with a main frame 1 having pivotally attached thereto a folding bed frame 2 consisting of sections 4...7 hinged together end to end by pivot pins 8, 9, 10 and which are in longitudinal alignment when extended, sections 4 and 5 are provided with means for locking the joint formed by pin 8 comprising a bolt 19 longitudinally slidably mounted on the underside of each of frame section 5 and a corresponding socket 20 rigidly secured on the underside of each of the sides of section 4, the pivot pin 11 connecting section 4 to frame 1 being mounted in a slot 21 and the bolt 19 being connected to the same bracket 22 by a link 25 pivotally connected by a pin 27 to the bracket and by a pin 26 to a slotted flange 23 on bolt 19 so that movement of the frame 2 in the direction of alignment of the sections will cause bolt 19 to slide relatively to section 5 and engage or disengage from socket 20.
Patent GB-397111-A (GB)
Title: A collapsible drying rail for wearing apparel and the like
IPC: D06F57/12
Filed: 1932-02-04
Abstract: 397,111. Hearth curbs. REES, F. J., 80, Little Albany Street, Regent's Park, London. Feb. 4, 1932, No. 3337. [Class 126.] A collapsable drying-rail for wearing-apparel comprises a main rail which is connected to a base member or members, such as a curb, by a pair of crossed supports each formed of two lengths, the inner ends of which are superimposed in sliding relationship. Clamping means are provided to lock the supports in the extended position. In the form shown, the drying-rail 1 is connected to a curb by two pivoted supports 5, 5<1> and 6, 6<1>, which are connected to brackets 2, 3, provided respectively on the rail and curb. Each support is made of two sections of equal length which are formed at their inner ends with guides 7. The supports pivot centrally about a pin 8 which passes through a slot 10 in each section, and a wing nut is provided on the pin so that the device can be locked in any desired position. The brackets 3 are arranged within a sheet-metal housing 11 which is secured to the longitudinal element 12 of the curb. In the collapsed position, the supports are stored within the housing and the rail 1 is so supported that it appears to comprise a continuation of a beading 16 of the side portions 13 of the curb. An extension piece or foot 14 may be pivoted to the undersurface of the curb. In a modification, the lower end of each support is connected to a single bar which is detachably secured to the rear face of the element 12. In a further modification, one section of each support slides within an undercut groove of the adjacent section, and in another arrangement one section is of channel section.
Patent GB-164790-A (GB)
Title: Improvements in or relating to telephones
IPC: H03F13/00
Filed: 1920-02-03
Abstract: 164,790. Murray, R. L., and Telephone Manufacturing Co., Ltd. Feb. 3, 1920. Telephone instruments and sets; portable sets; direct-call systems and apparatus.-In two-line telephone apparatus, particularly of the portable type, especially such as are used in mine-rescue work, there is combined with the transmitter A and receiver B, which may be either in series or in parallel with one another, a visual indicator such as an incandescent lamp K arranged in parallel with the circuit or circuits of the transmitter and receiver, for the purpose of indicating the condition of the line. Preferably an inductance L is arranged in series with the visual indicator to check speech-currents from passing freely through it. A battery H is connected at the station C between the instruments A, B and the line E, and is provided with a multiple-contact switch J or with a variable resistance. Fig. 4 shows a portable arrangement comprising a box M containing a reel N carrying the lines E, E<1>, and a case 0 containing the battery H, lamp K, inductance I, and switch J. The transmitters and receivers, arranged to be worn on the head, are provided with plugs to engage the sockets D<1>, G<1>, and may be kept in the box. The Provisional Specification states that the transmitter may be strapped to the neck, so that its cover is pressed on to the throat close to the larynx.
Patent GB-307588-A (GB)
Title: Improvements in or relating to brakes for motor vehicles
IPC: B60T1/06
Filed: 1928-02-02
Abstract: 307,588. Bullock, H. W., and Sowdon, T. R. Feb. 2, 1928. Applied by running axle or wheel; force-transmitting mechanism.-In a brake mechanism for motor vehicles the brakes at one end of the axles on the same side of the vehicle comprise floating shoes operably connected by Bowden wire or other flexible connections, to an intermediate part of which a tension is adapted to be applied. The turning tendency of the floating shoes actuates the brakes at the other end of the axle by means of flexible connections. The anchor discs carrying the shoes of the brakes b, e are free to rotate on the vehicle axle and carry levers r adapted to operate the brakes on the other ends of the axles by a cable 5 passing over a pulley 6 and Bowden wire respectively. The brakes b, e are applied by a Bowden wire m adapted to be tensioned by a grooved eccentric 9, having a pivot 10 and operated by a lever o. The pivot 10 is adjustable in a slot in a bracket 11. The wire m has a casing n provided with stops p on the anchor discs of the brakes b, e and stops q on the chassis.
Patent GB-601453-A (GB)
Title: Improvements in bolting devices
IPC: F16B13/06
Filed: 1945-02-10
Abstract: 601,453. Bolting. SALTHOUSE, J. E. Feb. 10, 1945, No. 3383. [Class 89 (i)] A device, for bolting objects to tubes the walls of which are too thin to tap and which are inaccessible within for nuts, comprises a bolt A with a taper head and a sleeve B weakened by grooves E. The sleeve is assembled on the bolt with a nut and washer C, the assembly is passed through the parts F, G to be connected and the bolt is held by a screwdriver slot D whilst the nut is tightened forcing the sleeve over the head.
Patent GB-363875-A (GB)
Title: Improvements in centrifugal governors
IPC: G05D13/08
Filed: 1931-02-03
Abstract: 363,875. Timing ignition. BOSCH AKT.-GES., R., 4, Militarstrasse, Stuttgart, Germany. Feb. 3, 1931, No. 3384. Convention date, Feb. 27, 1930. [Class 7 (iv).] In a centrifugal governor particularly for the ignition control of an internalcombustion engine, the weights 13 are provided at one end with slots 15 engaging pins 19 and at the other end with pins 17 engaging slots 21 in the disc 3. The lever 7 is attached to the cam and loading springs 23 connect the ends of the lever 7 to the pins 19. During low speeds,'the weights turn about the pins 19 until the pins 17 contact with the ends 27 of the slots 21 ; upon increase in speed, the weights turn about the pins 17.
Patent GB-757538-A (GB)
Title: Improvements in centrifugal oil cleaners
Inventor: BURKE ANTHONY EDGERTON
IPC: B04B5/00
Filed: 1954-02-05
Abstract: 757,538. Centrifugal separators. GLACIER METAL CO., Ltd. Jan 12, 1955 [Feb. 5, 1954], No. 3418/54. Class 23. In an oil cleaner comprising a drum rotated by the reaction of the cleaned oil discharging from nozzles, the separating chamber has concentric inlet and outlet passages. Oil supplied through a passage A<SP>5</SP> in the base A passes through a tube B fixed to the base, and having outlets B<SP>1</SP> discharging into the separating chamber. The drum is formed of parts E, E<SP>1</SP>, and has bearings G, G<SP>1</SP> which permit the drum to rotate about the tube. A partition H within the drum has a tubular extension H<SP>1</SP> which forms an annular outlet from the separating chamber and leads the cleaned oil to the nozzles E<SP>5</SP>. The drum may be dismantled for cleaning by removing nuts J<SP>1</SP>. A cover A<SP>3</SP> is secured to the base by means of a bolt C extending through the tube. Specification 732,105 is referred to.
Patent GB-912067-A (GB)
Title: Process for preparing manganous acetylacetonate
IPC: B01J31/22
Filed: 1961-01-30
Abstract: Manganous acetylacetonate, and the dihydrate thereof, are used as polymerization catalysts, specifically for the reaction between terephthalic acid and ethylene glycol.  The catalyst produces a polymer which is white, and which does not darken on exposure to light.  Example IV gives details of the polymerization.  U.S.A. Specification 2,857,363 is referred to.ALSO:Manganous acetylacetonate is prepared by mixing an aqueous solution of a water soluble manganous salt and acetylacetone, and then titrating the mixture with an alkali metal hydroxide or ammonium hydroxide to a pH in the range 6 to 8, when the manganous acetylacetonate dihydrate is precipitated. The manganous compound, and the acetylacetone, are preferably dissolved in the minimum amount of water and, when mixed, titrated to a pH of 6-8 with a dilute solution of the specified hydroxide.  The precipitate is dried and may be dehydrated by heating in a vacuum, subliming in a vacuum or by placing in a desiccator.  The product is stable to air and may be used as a polymerization catalyst. Water soluble manganous salts mentioned are the chloride, bromide, iodide, formate, acetate, butyrate, succinate, sulphate, ammonium sulphate, nitrate, cyanide and thiocyanate.  Examples are given and in a comparative experiment the manganous salt is added to a mixture of the hydroxide and acetylacetone in aqueous solution. U.S.A. Specification 2,857,363 is referred to.
Patent GB-668670-A (GB)
Title: Container fitted with piston apparatus for dispensing mustard, paste, sauce or the like
IPC: B65D83/00
Filed: 1950-02-10
Abstract: 668,670. Piston apparatus for dispensing mustard &c. SPIEKENHEUER, E., and SPIEKENHEUER, H., (trading as SPIEKENHEUER, GEB.). Feb. 10, 1950 [Jan. 25, 1950], No. 3501/50. Class 102 (ii) In apparatus for dispensing mustard &c. all the parts comprise plastic mouldings and consist of a container 1 having a piston 3 with a hollow rod 8 that extends through a hemispherical cover 11 screwed on the container. A loose fitting sleeve 22 surrounds the rod 8 and has an arm 26 projecting through an aperture 27 in the cover. The sleeve is loaded by a spring 25 that bears against a diaphragm 17 sprung into position behind at least three lugs 19. When the arm 26 is depressed, the sleeve 22 is tilted to engage the rod 8 and move the piston downwards to extrude the contents through the bore 9. At least three thread sections 14 in the same axial plane as the lugs are provided on the cap ; this arrangement facilitates the moulding operation. A packing ring 7 is provided on the piston.
Patent GB-690403-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1951-02-15
Abstract: 690,403. Optical objectives. COOK, G. H., and TAYLOR, TAYLOR, & HOBSON, Ltd. Jan. 30, 1952 [Feb. 15, 1951], No. 3657/51. Class 97 (i). In an objective corrected to cover a semiangular field not greater than 30 degrees and comprising two simple divergent components located between two simple convergent outer components and embracing between them two simple convergent inner components of meniscus form with their surfaces concave towards a diaphragm between them, the outer surfaces of the convergent outer components and the inner surfaces of the divergent components also being concave towards the diaphragm, the sum of the equivalent focal lengths of the two convergent inner components lies between 1.8 F and 2.6 F, where F is the equivalent focal length of the whole objective, the arithmetic mean between the positive values of the radii of curvature of the outer surfaces of such inner components lies between 0.22 F and 0.44 F, and the Petzval curvature of the objective lies between 0.08 and 0.16 times the equivalent power of the objective. Numerical data are given for one example of the objective shown. Specification 690,402 is referred to.