baber/WOPTO huggingface dataset:
Patent GB-397212-A (GB)
Title: Improvements in the manufacture of optically active menthols
IPC: C07C35/12
Filed: 1932-03-04
Abstract: A mixture of d- and l-menthols is resolved into its optically-active components by esterification with d- or l-menthoxyacetic acid, isolating one of the esters by fractional crystallization and hydrolysing it under such conditions that the liberated menthoxyacetic acid is not decomposed.  For the hydrolysis, treatment with a slight excess of dilute alcoholic alkali solution is suitable. The esterification is preferably effected with the use of the optically-active menthoxyacetyl chloride, prepared by treatment of the acid with thionyl chloride, in the presence of a tertiary base such as pyridine or quinoline. According to the examples, racemic menthol is esterified with l-menthoxyacetyl chloride and d-menthol obtained from the ester which crystallizes out from methyl alcohol; the ester remaining in the mother liquor is saponified, the recovered menthol esterified with d-menthoxyacetyl chloride, and l-menthol isolated by hydrolysis of the ester after its crystallization from methyl alcohol.
Patent GB-512067-A (GB)
Title: Improvements in or relating to edge protection and jointing strip for furniture and office, shop and other fittings
IPC: A47B95/04
Filed: 1938-03-02
Abstract: 512,067. Mouldings. STICKEL, K. G., and BLATTLER, J. A. March 2, 1938, No. 6599. [Class 20 (iv)] [Also in Group XIV] An edge protecting or jointing strip for furniture such as tables, shelves &c comprises strip material of bar, angle, channel or other section provided with fastening means in the form of one or more projecting ribs 3, Fig. 1, provided with teeth or projections 4 which are adapted to engage the walls of a slot 6, narrower than the thickness of the rib 3, formed in the member 5 to which the strip is applied. The teeth are preferably barb-like, and extend longitudinally of the rib. The edges 8, Fig. 2, may be sharp and turned inwardly so as to grip the panels 9. Fig. 3 shows a form with a flanged edge 12. Figs. 7, 8 and 9 show further forms. The strip may be of metal or of moulded plastic or other material.
Patent GB-269300-A (GB)
Title: Improvements in or relating to process and apparatus for making sheet glass
IPC: C03B13/04
Filed: 1926-03-09
Abstract: 269,300. White, A. E., (Pittsburgh Plate Glass Co.). March 9, 1926. Drawings to Specification. Glass furnaces; charges, conveying.-A leer for annealing plate glass which is formed as a long strip has a bed formed by rollers which are rotated to carry the strip through the leer. The rollers are driven at different speeds, and the glass is fed into the strip at a relatively high speed which is continued until the glass has set. The rate of movement of the glass is then progressively diminished until its speed, when it emerges from the leer, is only a fraction of that at the entrance. By this means, the glass plates are annealed in a leer of practicable length.
Patent GB-393038-A (GB)
Title: Improvements in or relating to wire stitching or stapling machines
IPC: B27F7/28
Filed: 1932-03-04
Abstract: 393,038. Stapling. POLLAK, J. E., 20, Holborn, London.-(Brehmer, Geb. ; Plagwitz, Leipsic, Germany.) March 4, 1932, No. 6636. [Class 89 (iii).] The staple-forming and driving elements of a stapling machine are formed of adjustablyseparable sections, so that staples having crossbars of different widths can be formed and driven without replacement of said elements. Wire from a reel is fed to the head 10 by a passage 11a, is cut off by a cutter 36, is shaped by a sectional outside former 21, 21a cooperating with an anvil 13, and is driven by a sectional driver 22, 22a. The head includes a staple-supporting member 23 as described in Specification 388,917. The units 21, 21a of the former are slidably carried by vertical slots 32, 33 formed respectively in plates 24, 25 which are mounted to slide transversely of the head 10. These plates are adapted to be moved to an equal and opposite extent by a wedge block 26 having tongues engaging inclined slots 24a, 25a in the plates, the block being movable transversely of the plates by means of a thumb-screw 30. Thus, rotation of the thumb-screw effects a separation or approach of the sections of the former, so that staples of different sizes can be shaped. The driver sections are carried slidably by the former sections, by means of tongues and grooves, so that they are adjusted with the former sections. The anvil is also formed in two parts 13a, 13b carried slidably by a back plate 13c. By engaging flanges of the anvil sections in grooves 23d in the former sections, the anvil sections can be adjusted with the former sections, being locked, subsequently, by set screws. The staple-supporting member 23 is also formed in two parts 23a, 23b, whose separation can be adjusted by a right- and lefthanded screw 23e. Alternatively, means may be provided for adjusting the support sections automatically from the plates 24, 25. The wire cutter 36 also is adjustable in conformity with the setting of the former sections. To this end, it is carried by the plate 25 and partakes of its adjusting movements. It is, however, disconnectible from the plate 25, to allow it to partake of the known automatic adjustment of the wire head 11 in accordance with the thickness of the work. The means for adjusting the plates 24, 25 may be associated with the wire-feed control described in Specification 388,917. In a modification, wherein the support member 23 is omitted, the former sections are separated by springs when the plates 24, 25 are separated, and the anvil sections are carried slidably by said plates, the former sections carrying cam arms for withdrawing the anvil sections during staple-driving. Only one section of each element may be adjustable, the other section being fixed. The adjusting wedge 26 could be replaced by screw-threaded or link members.
Patent GB-163833-A (GB)
Title: Improvements in and connected with adjustable backed chairs couches and similar articles of furniture
IPC: A47C1/026
Filed: 1920-03-05
Abstract: 163,833. Hare, J. C. March 5, 1920. Seat adjustments.-In a chair, couch, &c. of the type in which the hinged back b is angularly adjustable by means of a loose rod engaging a series of pockets in wooden brackets on each side of the chair &c., the ends of the loose rod i engage brackets f each with a rack device comprising curved pockets or dead-ended slots g disposed in different horizontal and vertical planes and connected by curved slots. The loose rod i is provided with collars between the brackets.
Patent GB-444435-A (GB)
Title: Improved method of producing composite photographs
IPC: G03B15/08
Filed: 1935-03-05
Abstract: 444,435. Composite photographs. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. March 5, 1935, No. 6916. Convention date, March 9, 1934. Drawings to Specification. [Class 98 (ii)] In a method of producing composite photographs and films wherein a tinted diapositive of a background is made and placed in front of the negative film in the camera when the foreground scene is being photographed in the studio in front of a plain background, the sources of illuminations employed in the studio are devices giving monochromatic or substantially monochromatic light. In the production of a kinematograph film by the method described, for example, in Specification 364,558, the diapositive of the background scene has its dark portions coloured yellow and its bright portions grey, and the foreground scene is illuminated with light from sodium lamps. Behind the foreground scene is arranged a screen which is illuminated with light for which, as regards absorption, the background positive is most suitable, this light being obtained from a mercury lamp from which a monochromatic spectrum is obtained by use of a filter. In general, absorption losses are reduced by employing light sources with several spectral lines close to one another, or with spectral lines far removed from one another, one line then being selected by use of a filter.
Patent GB-1466106-A (GB)
Title: Washing and drying machine
IPC: D06F58/02
Filed: 1974-02-15
Abstract: 1466106 Washing machines PHILIPS GLOEILAMPENFABRIEKEN NV 15 Feb 1974 [19 Feb 1973] 6967/74 Heading D1A In a top-loading horizontal axis washing and spin-drying machine a loading funnel 22 for the drum is supported on the tub independently of the machine chassis and a laundry load is automatically distributed in the drum for a spinning part of the cycle by starting the spinning with the load immersed in liquid. As shown the tub is mounted on three resilient legs with a rubber block 5, 6 at each end, the drum is driven by a permanent mag net motor controlled electrically and the loading funnel is a thermoplastic moulding with an integral detergent dispenser.
Patent GB-999782-A (GB)
Title: Flame ionisation detector
IPC: F23N5/12
Filed: 1961-11-20
Abstract: 999, 782. Determining relative quantities of fluid mixture constituents. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA and NEW ZEALAND Ltd. Nov. 20, 1961, [Nov. 18, 1960], No. 7080/65. Divided out of 999, 781. Heading G1N. In a flame detector for gas analysis the collecting electrode 17, Fig. 1, which may be of copper, platinum or stainless steel gauze extends around the burner nozzle 14 and subtends an angle greater than 90 degrees and preferably greater than 180 degrees. The electrode may be a hollow sphere with a small aperture or a cylinder having a length several times its width. A mixture of 40% hydrogen and 60% nitrogen admitted via a tube 12 is burnt at the tip of a stainless steel hypodermic needle 11 in organic free air supplied through apertures 15, the organic gas to be measured being introduced in side tube 13 if the combustion gas is not also passed through the chromatograph column. Openings 19 in the top of casing 18 permit the escape of combustion products but prevent the ingress of dust insulator 23 which supports the electrode 17 is positioned above the flame to prevent loss of insulation by condensation. Lead 22 may be positionally adjusted in insulator 23. Specification 838,189 also is referred to.
Patent GB-280419-A (GB)
Title: Improvements in or relating to plates for use in cultivating and protecting plants and seeds
IPC: A01G13/00
Filed: 1927-03-14
Abstract: 280,419. Presspan-und Isolationsmaterialien-Werke f³r Elektrotechnik, vorm. H. Weidmann Akt.-Ges. Feb. 1, 1927, [Convention date]. Addition to 266,726. Plants, treatment of growing; seed and plant protectors.-Plates of the kind described in the parent Specification for covering the soil around plants and sown seeds are made of rectangular shape for use with rows of plants, the upper surface being inclined towards the row of plants from near a downwardly bent outer longitudinal edge, and the width and arrangement of the plates being such as to cover the whole space between the rows of plants. The plates k may be provided with slot-shaped openings l along the edge and near to the ground. When the distance between the rows of plants is about twice the width of the plates, two rows of plates may be arranged to overlap one another as shown in Fig. 1 with plants in the openings l. When the distance between the rows of plants is equal to the width of the plates the arrangement may be as shown in Fig. 2. The ends of the space beneath a row of plates may be closed by soil. The openings l in the plates k may be dispensed with and the plates arranged in rows with narrow gaps between them to accommodate the plants.
Patent GB-491868-A (GB)
Title: Improvements in or relating to the painting of the internal surfaces of pipes and the like
IPC: B05B13/06
Filed: 1937-03-10
Abstract: <PICT:0491868/III/1> An apparatus for coating pipes internally comprises a spraying nozzle 1 centrally positioned in the pipe by resilient members 7 attached at their rear end to a block 8 carrying a ball joint to which is rotatably attached a spiral brush 16 rotated in the opposite sense to its spiral by arms 15 contacting with the surface of the pipe.  The apparatus is pulled through the pipe by a cable 5, paint and compressed air being supplied by hoses 6. The spring members 7 are deformed into a pear-shaped crosssection 7a opposite the spraying nozzle so as to offer the minimum obstruction to the spray.  Specification 386,181, [Group XXIX], is referred to.
Patent GB-796075-A (GB)
Title: Improvements in or relating to heterodyne mixing circuits
IPC: H04B15/06
Filed: 1956-03-07
Abstract: 796,075. Superheterodyne circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 7, 1956 [March 10, 1955], No. 7172/56. Class 40(6). A self-oscillating frequency changer comprises a valve with an anode circuit 2, 3 tuned to the oscillator frequency and inductively backcoupled to an inductance 5 in the grid circuit. A blocking condenser 6 is in series with the coil 5. The I.F. circuit 4 is in series with the oscillator circuit 2, 3. The signal input is introduced at a null point for the local oscillations, via a tap on a potentiometer comprising condenser 9, 12 which are connected between anode and grid. Alternative arrangements referred to in the Specification comprise the tuning of inductance 5 instead of inductance 2; the interchange in position of circuits 2, 3 and 4, and the interchange in position of inductance 5 and condenser 6.
Patent GB-140090-A (GB)
Title: Improved manufacture of ammonia and gas by distillation of fuel in vertical retorts of rectangular cross-section
IPC: C10B27/02
Filed: 1920-03-09
Abstract: 140,090. Terneden, L. J., and Kummel, P. J. March 10, 1919, [Convention date]. Retorts.-Steam is supplied to vertical gas retorts through vertical flues b<1>, b<2>, b<5> located betweeu adjacent retorts a and having a number of openings c. The flues are also used for the withdrawal of gas from the retorts.
Patent GB-807728-A (GB)
Title: Semi-conductor translating devices and method of manufacturing the same
IPC: H01L29/00
Filed: 1956-03-07
Abstract: 807,728. Semi-conductor devices. HUGHES AIRCRAFT CO. March 7, 1956 [April 4, 1955], No. 7218/56. Class 37. A method of making PN junction devices comprises forming a zone of one conductivity type on one face of a semi-conductor wafer of the opposite type by the fusion process, and then ohmically affixing to a region of the face surrounding the zone, a backing member of the same basic material and conductivity type as the wafer to facilitate handling in subsequent processing. A large number of PNP-type transistors are made from a circular wafer 10 of N-type Si 1 inch in diameter and 15 mils. thick by fusing A1 bodies to it at spaced points to form local regrown P-type Si zones 11 therein for use as collectors. Ohmic contacts 12 are provided to the eutectic AlSi overlying these regions. The remainder of the wafer surface is provided with a layer of Au 14 containing 0.5 per cent Sb leaving a clearance region 16 round each zone. An apertured wafer 20 of Si doped with sufficient As to give it 10<SP>3</SP> times the conductivity of the wafer 10 and provided on both faces with a layer 21 of Sb doped Au is then applied to wafer 10 and the assembly heated under light pressure to above the eutectic temperature of Au and Si and cooled at a controlled rate to weld the wafers together. The opposite face of wafer 10 is then lapped to reduce it to a thickness of 5 mils and a series of similar but smaller P-type zones for use as emitters formed as on the other face opposite the collector zones. The wafer is then diced to give single PNP units which are etched and provided with emitter, collector and base leads. If ohmic contacts are provided on the lapped surface instead of regrown P-type emitter zones junction rectifiers are produced. Use of a backing member of the same material as the wafer reduces any thermal stresses in operation and also simplifies the etching and dicing processes.
Patent GB-845085-A (GB)
Title: Anti-freeze distributing means for compressors
IPC: F04B39/06
Filed: 1959-03-03
Abstract: 845,085. Compressors. BENDIX-WESTINGHOUSE AUTOMOTIVE AIR BRAKE CO. March 3, 1959 [April 7, 1958], No. 7379/59. Class 8(1). A compressor comprising an inlet chamber 26 is provided with means to inject anti-freeze into the inlet chamber. A cavity 58 is supplied with anti-freeze from a tank 54 and houses a sponge material 64. The cavity has an outlet port 67 controlled by a valve 74 which is attached to a piston 60 provided with apertures 62. The valve is connected at its other end to a lever 70, pivoted at 72, which is actuated by movement of a rod 52 in accordance with the pressure in a reservoir 36 through a governor 40 and spring loaded piston 46. When the pressure in the reservoir exceeds a predetermined value, the parts are in the position shown where the rod 52 holds open the inlet valve 20 to off-load the compressor and the valve port 67 is closed and anti-freeze is absorbed by the sponge 64. When the pressure in the reservoir drops, the lever 70 moves to the posicion shown in dotted lines whereby the inlet valve 20 is allowed to close and the port 67 is opened, the piston 60 compresses the sponge 64 and antifreeze is forced into the inlet chamber. When the sponge is compressed it closes round the stem of the valve 68 to prevent escape of air from the inlet chamber, especially when this chamber is supercharged.
Patent GB-410942-A (GB)
Title: Improvements in or relating to means for plaiting down textile fabric in kiers or cisterns
IPC: B65H54/78
Filed: 1933-03-11
Abstract: <PICT:0410942/IV/1> <PICT:0410942/IV/2> In an apparatus for plaiting down fabric a shaft carrying a pivoted trunk or trunks is oscillated by the aid of a toothed rack which is reciprocated by means of a crank pin and cam slot, the trunk or trunks being simultaneously rocked about their pivots by a mechanism which may for example consist of an adjustable lever connected to each trunk and actuated by means of a bobbin mounted on the oscillating shaft, which is reciprocated thereon by levers connected to a nut and double archimedean screw.  As shown pulley 30 rotates shaft 21 thereby rotating crank pin 19 and wheel 20. Crank pin 19 moving in a cam slot in a cam 17 reciprocates the rack 16 which via pinion 15 and pinion 13 actuates toothed segment 12.  This segment carries an adjustable stud 11 engaging a radial slot in the rocker arm 10 thereby oscillating trunks 9.  The trunks are rocked in a direction at right angles to this motion by wheel 20 driving wheel 43 fixed to the archimedean screw 42 which is loose on shaft 14.  The screw rocks levers 38 which engage bobbin 36 and via adjustable levers and linkages 34, 32, 31 rock the trunks 9.
Patent GB-781709-A (GB)
Title: Improvements in and relating to foldable moulds for automatic chocolate moulding plants
IPC: A23G1/20
Filed: 1955-03-14
Abstract: 781,709. Moulding chocolate; endless-chain moulding-machines. MIKROVAERK AKTIESELSKAB. March 14, 1955 [March 17, 1954], No. 7421/55. Class 87(2). A hollow chocolate article is cast in a mould cavity 24 formed in complementary mould parts 22, 23 which are hinged together at 20, so that after casting the chocolate shells separately, the part 23 may be swung through 180 degrees to unite the shells. The mould part 22 is mounted on a frame 22<SP>1</SP> having rails 28 which engage in grooves 27 in mould carriers 26 which may be mounted on endless bands. The mould part 23 is held in a mould carrier by resilient clips 29 or in a modification, Fig. 5, (not shown) by pawls. In a further modification, Fig. 6 (not shown), the mould parts may be hinged to each other about an axis at right angles to that shown in Fig. 2. The moulds mounted on bands 1, Fig. 1, are passed through a heater 2, filled with chocolate at 3, vibrated at 4, inverted by rollers 6, 7 to allow excess chocolate to fall into a tray 5, whilst being vibrated at 8, scraped at 9 and 10, heated at 12 to soften the edges of the chocolate shells, closed at 14 to unite the shells, vibrated at 15, and finally cooled at 16.
Patent GB-950594-A (GB)
Title: Door lock, particularly for automobile doors
IPC: E05B83/36
Filed: 1960-03-02
Abstract: 950,594. Door latches. K. G. NYSTROM. March 2, 1960 [March 3, 1959], No. 7433/60. Heading E2A. A lock for automobile doors comprises a first part 19 adapted to be secured to a door and a second part 18 adapted to be secured to the door frame, the first part 19 having outwardly facing grooves 22 in which parallel inwardly facing ribs 21 of part 18 engage in the closed position of the door, the first part 19 carrying a locking pawl 27 which co-operates with a locking tooth 25 on part 18, the pawl being so positioned as to press a downwardly facing surface on part 19 on to an upwardly facing surface on part 18 if an attempt is made to open the door. A groove 23, Fig. 2, in part 19 houses the pawl 27, release of the pawl being by means of a pushbutton 33 which urges an arm 29 attached to the pawl against the pressure of a spring 31. The groove 23 may be absent and the pawl situated in the upwardly facing groove 22, Fig. 5.
Patent GB-1034626-A (GB)
Title: Machine for making perforated bricks
IPC: B28B1/44
Filed: 1965-02-22
Abstract: 1,034,626. Moulding perforated bricks. HARBISON - WALKER REFRACTORIES CO. Feb. 22, 1965 [March 10, 1964], No. 7480/65. Addition to 970,595. Heading B5A. The machine described in the parent Specification is modified in that the perforating pin or pins are moved slightly downwardly during the initial stages of the compression. The pin or pins comprise hydraulic cylinders.
Patent GB-896000-A (GB)
Title: Improvements relating to earth-moving machines
Inventor: LEE FRANK
IPC: E02F3/38
Filed: 1960-03-03
Abstract: 896,000. Slewing jib cranes. RUBERY OWEN & CO. Ltd. March 1, 1961 [March 3, 1960], No. 7505/60. Class 78 (4). [Also in Group XXI] Slewing means for a boom-carrying king post 17 of a crane consists of an hydraulic pistoncylinder assembly 39, 41 mounted at rightangles to the axis of the king post and rigidly fixed in relation to said axis so that pulleys 45 on the free ends of a piston-rod 41 projecting from either end of the cylinder 39 of the assembly can simultaneously act on a pair of cables 37, 38. The cables 37, 38 are fixed to the chassis of the machine or to the frame by which the king post is mounted on the chassis  and pass part-way around a sheave 34 secured to the king post before being secured at 36 to the sheave.