baber/WOPTO huggingface dataset:
Patent GB-579448-A (GB)
Title: Treatment of polyvinylidene chloride
IPC: D01F6/10
Filed: 1944-05-13
Abstract: Vinylidene chloride polymers or interpolymers with vinyl chloride, vinyl esters of organic acids, esters, amides or nitriles of acrylic acid or methacrylic acid are treated with steam for 15-30 seconds, then mechanically worked, e.g. by extrusion, drawing, rolling or pressing, while in an atmosphere of steam.  Steam at 100 DEG  C. is preferred, though steam at over 100 DEG  C. may be used.  The polymeric material may be chilled and crystalline before treatment. Plasticisers such as chlorinated diphenyl, hexachlorodiphenyl ether and hexachlorobenzophenone may be added when the resin is at a temperature between the softening and decomposition points.  Phenyl glycide ether may be added as a stabiliser.  Threads or films may be made. Specification 532,697 is referred to.
Patent GB-137185-A (GB)
Title: A new or improved clip for use with roofing slates or tiles
IPC: E04D1/04
Filed: 1919-03-19
Abstract: 137,185. Ansell, W. H. G. March 19, 1919. Roofs, slating.-A clip for fixing roofing slates or tiles is bent from a piece of sheet metal, Fig. 1, and secured to the edge of the slate &c. by a bifurcated pin passing through holes in the slate and in the two folds of the clip. A tongue a<2> formed in one with the clip engages the batten c, Fig. 4.
Patent GB-1113740-A (GB)
Title: A non-slewing luffing crane
IPC: B66C23/10
Filed: 1967-02-14
Abstract: 1,113,740. Level-luffing jib-cranes. A. A. S. HAINES. 14 Feb., 1967 [25 Aug., 1966; 13 Sept., 1966], No. 6886/67. Heading B8B. A non-slewing level-luffing jib-crane has an arm 29 pivoted to the top of the jib 12 at 24 which is pivoted as the jib luffs by a triangular member 4, 9, 10 pivoted to the arm 29 at 27. As the jib swings about its pivot 8 from the position shown in Fig. 1, the triangular member pivots first about a roller 7 until the jib is vertical and then about a roller 6 as the jib swings to the left. A pinion 19 which engages a rack 18 luffs the jib. A counterweight 16 swings with the jib. The hoist rope passes up the jib to the pivot 24 and along the arm to pass out between pulleys 30, 31. Fig. 3 illustrates an embodiment in which a lever 34 is pivoted to the outer end of the arm 29, the hoist rope being reeved around pulleys 30, 31a, 33 and a pulley 36 on a spreader bar 38 before being anchored at 35. Fig. 5 shows an arrangement in which the arm 29 comprises two portions 29a, 29b. Down each one passes a separate hoisting cable 21a, 21b to a spreader bar 43 after being reeved round pulleys 41a, 42a, 41b, 42b respectively.
Patent GB-1130542-A (GB)
Title: Racemization of ª‡-acylamino-ª‡-methyl-ªß-(3,4-disubstituted phenyl)propionitriles
Inventor: FIRESTONE RAYMOND ARMOND
IPC: C07C255/53
Filed: 1965-10-22
Abstract: 1,130,542. Racemization of α-acylamino-α- methyl - # - (3,4 - disubstituted phenyl) - propionitriles. MERCK & CO. Inc. 22 Oct., 1965 [27 Oct., 1964], No. 6922/68. Divided out of 1,130,541. Heading C2C. D-propionitriles of the formula (wherein one R 1  is H, C 1-5 alkyl or C 2-6  alkanoyl and the other R 1  is C 2-5 alkyl or C 2-6 alkanoyl; and R 2  is C 1-5 alkyl) are racemized by contact with cyanide ions in dimethyl sulphoxide. Acyloxy groups may be hydrolysed during the process or subsequently. The products may be resolved and the separated L-isomer hydrolysed to the valuable L-α-methyl-(3,4-dihydroxyphenyl)-alanine. Specification 1,130,541 is referred to.
Patent GB-778928-A (GB)
Title: Preparing ice-colours in textile printing
IPC: D06P1/12
Filed: 1955-03-09
Abstract: Ice-colours in textile printing are prepared by applying a paste containing a coupling component, a caustic alkali and a water-soluble diazoamin compound obtaind from a diazotized halogen-substituted aniline or a diazotized halogen-substituted alkyl- or alkoxy-aniline and 2 - alkylamino-5 (or 4) - sulpho - benzoic acid, and then developing the print in neutral steam in the absence of a volatile organic base.  Examples are given. Specifications 715,249, 723,389 and 743,308 are referred to.
Patent GB-600476-A (GB)
Title: Improvements in caps for sealing milk and other bottles and similar containers
IPC: B65D41/14
Filed: 1945-03-20
Abstract: 600,476. Closures for bottles &c. ENOCK, A. G. March 20, 1945, No. 6973. [Class 125(iii)] A cap A for sealing milk or other bottles is formed solely from a strip of metal foil and has a skirt B formed at an angle of substantially 120 degrees to the top a. The bottom edge of the skirt may be flanged and the edge between the top and the skirt rounded. According to the Provisional Specification the cap may be made of paper or suitable plastic. Specifications 591,363 and 600,074 are referred to.
Patent GB-307309-A (GB)
Title: Improvements in or relating to picture and the like radio transmission systems
IPC: H04N1/00
Filed: 1929-03-04
Abstract: 307,309. Telefunken Ges. f³r Drahtlose Telegraphie. March 3, 1928, [Convention date]. Copying-telegraphs; fading, preventing.-In a picture-telegraph apparatus means are associated with the scanning device to alter the wavelength of transmission, or an intermediate modulation frequency, in the intervals between the transmission of consecutive lines of the picture. Thus a rotating contact device coupled with the pick-up device, may alter the wavelength of the transmitter by altering the magnetization of an iron-cored choke, by switching a condenser in or out of a circuit, or by short-circuiting a resistance in known manner. Alternatively an intermediate modulation frequency, obtained by a rotating perforated disc in the exploring light beam, may be altered in any convenient manner. At the receiver, where a local heterodyne oscillator is employed, the beat frequency is maintained constant by varying the oscillator frequency in synchronism with the transmitted wave, or where two wavelengths only are employed the local oscillator may be made to give the mean frequency of the two, thus giving a constant beat frequency. If the two transmitted frequencies are widely separated, the receiving tuner may be adjusted; if nearly the same the receiving device may remain unaltered.
Patent GB-1193250-A (GB)
Title: Method and Apparatus for Adjusting Electron Beam in Electron Microscope
IPC: H01J37/147
Filed: 1969-02-10
Abstract: 1,193,250. Electron microscopes. CARL ZEISS-STIFTUNG, [trading as CARL ZEISS]. 10 Feb., 1969 [23 Feb., 1968], No. 7047/69. Heading H1D. An electron microscope is provided with four magnetic deflection coils between the electron gun and the illuminating aperture for adjusting the position of the beam. The circuit for this adjustment is shown in Fig. 2. In the first position a of switch 13, the first coil 18 is supplied with D.C. of magnitude and sign variable by potentiometer 22, whereas the other three coils 19-21 are supplied with A.C. from respective generators 29-31 operating at frequencies such as to produce a beat frequency greater than 5 cycles/sec. In one example, the frequencies are 50, 1070, and 1000 cycles/sec. giving a beat frequency of 20 cycles, so that the currents in the three coils 19-21 are swept through the correct operating valves at this beat frequency, and the potentiometer 22 is adjusted until an image is observed on the fluorescent screen (6, Fig. 1, not shown) through windows (7). The switch 13 is then moved to position b and potentiometer 23 adjusted in the same way, and so on. The adjustments may be made automatically if the fluorescent screen is removed (Fig. 5, not shown) to expose an output electrode (37) which provides output pulses when each adjustment is correct. The potentiometer 22 is driven by a motor until output pulses are obtained, when the motor is stopped and the switch 13 advanced so that potentiometer 23 can be adjusted, and so on. In a modified circuit, Fig. 3 (not shown), coil 19 is supplied with current at 62À5 cycles/sec. and the coils 20 and 21 with current at 50 cycles/ sec., the latter supplies being derived from two potentiometers connected respectively over half and the whole of a secondary winding of a transformer so that the relative magnitudes and phases of these two supplies can be adjusted.
Patent GB-1485258-A (GB)
Title: Process for the polymerisation of ethylene
IPC: C08F2/34
Filed: 1976-02-23
Abstract: 1485258 Ethylene polymerization RUHRCHEMIE AG 23 Feb 1976 [26 Feb 1975] 07048/76 Heading C3P Ethylene is polymerized, optionally with comonomers, at 100-350 C. and under a pressure of 500-5000 bar, in the presence of an initiator in a tubular reactor provided with side branches, the side branches having (a) an inner diameter of #12 mm. for a "flow number" (= inner diameter x speed of flow) of 0À20-0À55 m.<SP>2</SP>/sec. and (b) an inner diameter of < 10 mm. for a "flow number" of >0À55 m.<SP>2</SP>/sec.
Patent GB-470242-A (GB)
Title: Improvements in or relating to discharge wagons and the like
IPC: B60P1/32
Filed: 1937-03-10
Abstract: 470,242. Tip-wagons. ROOLF, H. March 10. 1937, No. 7114. Convention date, July 3, 1936. 103 (iv) and 108 (i)] A tip-wagon, which may be for rail or road use, comprises a body f which rests on central rollers e which are higher than side rollers d, being retained by locking levers h. The movement of the body, when one of the levers h is released, is controlled by links i.
Patent GB-1370324-A (GB)
Title: Glass products
IPC: C03C13/00
Filed: 1971-03-18
Abstract: 1370324 Devitrified glass elements comprising fibrous crystals P S ROGERS and J WILLIAMSON 13 March 1972 [18 March 1971] 7167/71 Heading C1M A devitrified silicate glass element, e.g. rod, bar or fibre comprises closely packed individual fibrous crystals lying in parallel relationship to one another along the major axis of the element. The invention is also concerned with individual fibrous crystals, having lengths of at least 3 mm. and diameters less than 1 Ám, produced by separating the fibrous crystals of the element. The composition of the silicate glass preferably comprises in per cent by weight 40-62 SiO2, 25-43 CaO, 0-23 Al2O3, 0-10 MgO, and 0-10 Na2O, the balance, if any, consisting of compatible constituents. The glass may also contain K2O. The devitrified glass element may be produced by a method comprising inducing nucleation at one end of a glass element containing a crystal growth catalyst and thereafter inducing the growth of fibrous elements along the major axis of the element preferably by heating the end of the glass element at which nucleation has been induced and thereafter heating each successive portion of the element along its major axis at a rate substantially equal to the rate of crystal growth. Heating may be by an electrical heater arranged around the element, by radial gas jets or by a focussed beam of radiant heat. Suitable crystal growth elements are FeO, ZnO (both in amounts 5-7% by weight), V2O<5> (1-4%), and fluorides and phosphates of Na, K, Mg, and Ca. Nucleation may be induced by abrasion or by chemical treatment. The element is suitably heated at 850-1100 C., preferably 900-1050 C. The description discloses an apparatus for producing a devitrified glass rod 4 in which the glass rod 4 is clamped vertically at 5 and an annular heating element 6 is disposed around the glass rod so that the glass rod projects through the central opening in the heating element 6. The heating element 6 is positioned at the top of the glass element and is lowered, during use, by a winding mechanism 7, 8, 9. A section of a heating element arranged to provide a narrow hot zone on a glass rod in which the heating element is tapered inwardly towards the rod is also shown.
Patent GB-539401-A (GB)
Title: Improvements in and relating to refrigerating apparatus
IPC: F25D21/14
Filed: 1940-04-22
Abstract: 539,401. Refrigerators. BRITISH THOMSONHOUSTON CO., Ltd. April 22, 1940, No. 7240. Convention date, April 22, 1939. [Class 29] Condensation of moisture on the under surface of a drip tray 16 is prevented by providing therefor a shield 17, which may support the tray on a shelf or be suspended from a shelf close to the bottom of the tray, the shield comprising spaced apart metal sheets 19, 18 sealed around their edges to provide a dead air space, by a grooved rubber ring 20, and the outer face of the lower sheet exposed to the air of the cabinet having a high co-efficient of absorption of radiant heat. In the case of aluminium sheets the exposed face may be anodized; or an enamelled surface may be used. The upper face of the upper sheet may be polished to minimise the emission of radiant heat, or may be unpolished or treated in the same manner as the lower sheet.
Patent GB-854356-A (GB)
Title: Improvements in and relating to instruments for calculating the percentage of plantsto be removed
Inventor: VISSERS HERBERT
IPC: A01B41/00
Filed: 1959-03-03
Abstract: 854,356. Slide-rules; tabular appliances. LANDBOUWWERKTUIGEN - EN MASCHINEFABRIEK H. VISSERS N.V. March 3, 1959, No. 7320/59. Class 106 (1). A logarithmic slide rule, particularly for determining the percentage thinning to be effected in a row of plants given the existing and required densities of the plants, comprises a member 2 bearing a scale C and an index S and a relatively movable member 1 bearing two scales A and B, the arrangement being such that the index S indicates on the scale B one minus the ratio of aligned values on the scales C and A, as a percentage. The reverse side of the member 1 is marked to indicate through windows 7-10, for particular settings of the member 1 corresponding to particular percentage thinnings required, various values to facilitate the setting of a thinning-machine such as that described in Specification 788,389.
Patent GB-199117-A (GB)
Title: Improvements in invalid chairs
IPC: A61G5/10
Filed: 1922-03-14
Abstract: 199,117. Murdoch, H. B., and Broughton, T. March 14, 1922. Seats.- An invalid chair or carriage with tubular framework for wheeling on level ground or up and down stairs has two front swivel wheels 18 mounted in forks 19, the long stems of which turn within vertical tubular members 10 arranged in the plane of the front upper vertical tubular members 4, 4. Curved members 9, 9 serving as guards connect the members 10 with the front ends of lower horizontal frame members 8. The rear axle 15 is resilientlv mounted in vertical guides 16 on rear frame members 7. Telescopic carrying handles 25 and a sliding footrest 26 are provided on the lower members 8. The hammock-like back and seat 28 is suspended at the top by spiral springs 33 on a bar 32 adjustable on bars 30, and mounted at the forward end on a cross-bar 35 resiliently mounted in vertical guides 37 as shown. The short bars 30 project horizontally below the carrying handles 29. Further telescopic carrying handles 24 and a removable slide rail 22 in front of the seat are provided. Specification 104,946. is referred to.
Patent GB-692867-A (GB)
Title: Improvements relating to turbine blades
Inventor: TRENT EDWARD MOOR
IPC: F01D5/28
Filed: 1950-03-24
Abstract: A gas-turbine blade is made of a sintered hard alloy consisting of a solid solution of Cr carbide and Ti carbide, the Cr carbide forming 5-35 per cent of the solid solution, and one or more of the metals Fe, Co and Ni as auxiliary binder metal in amount from 10-60 per cent by weight of the whole composition.
Patent GB-122104-A (GB)
Title: Improvements in and relating to Wire-cutting Attachments for Small Arms.
Inventor: SZAFRANSKI CASEY
IPC: F41C27/20
Filed: 1918-05-04
Abstract: 122,104. Szafranski, C. May 4, 1918. Cutters.-Relates to wire-cutters of the kind comprising shearing-means on a bayonet cooperating with the blade of the bayonet during the cutting operation, and consists in a blade 14 pivoted to the bayonet 10 and manually operated by means of a curved lever 21, a connecting link 20, and a pull rod 19
Patent GB-567890-A (GB)
Title: Improvements in or relating to centrifugal compressors and centrifugal pumps with closed rotor wheels
IPC: F04D29/28
Filed: 1943-05-12
Abstract: 567,890. Centrifugal pumps, &c. ESCHER WYSS MASCHINENFABRIK AKT.-GES. May 12, 1943, No. 7561. Convention date, May 29, 1942. [Class 110 (i)] In a single or multistage centrifugal pump or compressor of the closed rotor type, discs 4, 5 form channels 11 of diminishing crosssection towards the periphery of the rotor, to cause an accelerated flow of the liquid into the diffuser channel 6. The rotor blades may be alternately long and short, curved backwards or forwards or be radial, and attached to the discs after being separately manufactured. The blade tips may be as shown in Fig. 1, or extend to the edges of the discs.
Patent GB-145835-A (GB)
Title: Improvements relating to the synchronous operation by electrical means of two or more mechanisms
IPC: G08B9/00
Filed: 1919-03-27
Abstract: 145,835. Robinson & Co., A., Gill, J. F., and Chaviara, J. N. March 27, 1919. Sounding-apparatus. - In the tell-tale apparatus shown in Fig. 8, applicable as a tide indicator or for depth sounding, the pressure of the water deflects a. rubber diaphragm 11 which acts on a flexible cross-bar 12 carrying a lever 13. Movement of the lever 13 closes one or other of two contacts 14, energizing a corresponding oscillator which rotates the disk y in the appropriate direction until the contacts 14 regain their normal position relative to the lever 13, whereupon the closed contact opens and the movement stops. A receiver, which is operated electrically in synchronism with the disk y, may either indicate on a dial or may produce an automatic record. Specifications 123,830 and 136,369, [both in Class 40 (i), Electric signalling systems &c.], are referred to.
Patent GB-1139615-A (GB)
Title: Improved electrolytic cell
Inventor: SPENGLER HAROLD HUBER
IPC: C25B9/19
Filed: 1967-02-17
Abstract: 1,139,615. Electrolyzer cells. ALLISCHALMERS MFG. CO. Feb. 17, 1967 [Feb.25, 1966], No.7725/67. Heading C7B. Water is electrolyzed to produce hydrogen and oxygen in a cell 10 having a pair of porous electrodes, cathode 11 and anode 12, spaced apart by an electrolyte matrix 16 saturated with an aqueous electrolyte, a chamber 20, 21 adjacent each electrode with storage means 31, 32, for supplying thereto fresh water to replenish consumed water, and a preformed liquid-permeable preferably foraminous structural element 17, 18 of Au, Ag or Pt group metal, e. g. Pt, Pd, Rh or Ir, such as a fine mesh screen, interposed between and in contact with each electrode and the matrix. The porous electrodes may be of sintered nickel. The electrolyte may be an aqueous solution of H 2 SO 4 , or an alkali metal hydroxide, e.g. NaOH or KOH or salt; the matrix may be spun fibrous asbestos or polypropylene. The housing 19 of the cell and perforated support columns 22, 23 for defining the chambers 20, 21 may be of PTFE or PVC. A stack of unit cells may be used.
Patent GB-921997-A (GB)
Title: Improvements in and relating to rotary vane machines
IPC: F01C21/08
Filed: 1959-03-06
Abstract: 921,997. Rotary vane pumps and motors. K. EICKMANN. March 6, 1959 [March 13, 1958; Feb. 26, 1959], No. 7777/59. Class 110 (2). In a rotary vane machine comprising a rotor, rotor side walls, a rotor casing and vanes slidably received in slots formed in the rotor, the vanes 11, Fig. 4, have axial and radial extensions 14 extending into slots in the rotor side walls, the extensions having recesses, e.g. 17, 18, 19, 20, fed with fluid under pressure. In another construction, Fig. 12, the recesses 54 are open to one end of the vane and are closed by plates 55 on the side walls, so that the area of the recesses varies according to the position of the vane. The vanes may have sliding elements as described in Specification 921,998.
Patent GB-804253-A (GB)
Title: Improvements in or relating to clothes props
IPC: D06F53/04
Filed: 1956-03-14
Abstract: 804,253. Clothes props. LAWSON, R. W. March 14, 1957 [March 14, 1956], No. 7933/56. Class 52(5) A clothes prop is connected to a ground - contacting base by a coiled spring. As shown, a socket 15 receives the lower end of a prof 16 and is secured to a coiled spring 11 the lowest turn of Which is secured to ar aluminium base 1 by integral tongues. The upper end of the prop has a socket 17 and locking screw 21 for the end of an extension member 20 which has a line guide 19. In modifications the prop and one or more extensions are connected by hinges and locked in extended position by pawls, the line guide is at one side of the prop and metal or resilient. plastic studs are provided on the underside of the base. A second spring may be provided intermediate the ends of the prop. According to the Provisional Specification a ball and socket joint incorporating a spring can replace the coil spring.
Patent GB-297755-A (GB)
Title: Improvements in and relating to apparatus for the dyeing or treating of hanks
IPC: D06B3/08
Filed: 1927-03-22
Abstract: 297,755. Mills, K. S. March 22, 1927. Hank-type apparatus; dipping-apparatus.- Apparatus as in Specification 267,989 is modified in the following respects to adapt it for hank dyeing and other treatment. (a) The rotatable screwed rod is supported at points along its length by bearings adapted not to interfere with the travel of the hank carrier. In one modification, Fig. 16, the external diameter 11 of a split. intermediate bearing is tapered. Alternatively carriers with double hooks may be provided to bridge any gap. (b) The screwed rod, may be made in sections. (c) To economize fluid the tanks may have wide ends 13, 14, Fig. 4, where the hank is immersed and withdrawn. The bottom of the tank may be shaped to follow the line traced by the lowest part of the carrier. (d) The hank carrier may be counterbalanced by an adjustable weight 16, Fig. 12, and may comprise a frame 24 suspended from a pin 18 on the carrier. This frame 24 supports a roller 25 introduced into slots 28, Fig. 17, and the roller has end discs 29 adapted to run on ledges 30 of the tank, thereby rotating the roller 25. A lower roller 31 keeps the hank extended. Alternatively the uppar and lower rollers 25, 31 may be supported in slots 33 formed in a frame 32. Fig. 14. (e) Means for squeezing liquor from the hanks may be provided. Two counterweighted bell-crank levers 36. Fig. 20, are adapted to rotate when released from the cam holding arms 34, to engage the ends of the lower hank rnller 31. and bring the latter against a rotated squeezing roller 37. A motor to rotate the cam shaft 35 and the roller 37 may .be started and stopped by switches operated by the carrier 15 as it travels along the screwed rod 6. The motor may alternatively be stopped by means operated from the cam shaft 35. (1) A spacing- arrangement for the marshalling and spacing of carriers on the screwed rod is provided. Two sections 6<a>, 6<b>, Figs. 24 and 25, are separated by a section 6<c> having a very slight thread. An escapement linkage comprise links 38, 39 pivoted at 40, 41, connected by a pin and slot 42, and normally pulled by a spring 43 against a stop 44. The ends 45, 46 of the links lie in the path of the carriers which have double hooks. The leading hook of the first carrier has a notch 48, Fig. 27, which can pass the end 45 but not the end 46; all the rear hooks of the carriers have notches 49, Figs. 26 and 27, which pass both ends 45 and 46, and all the leading hooks of succeeding carriers after the first have ends 47 which engage both ends 45, 46. The leading carrier after passing the end 45, tilts the end 46, and rocks the levers 38, 39 so as to tilt the end 45 and pass the next carrier.