baber/WOPTO huggingface dataset:
Patent GB-874353-A (GB)
Title: Method of preparing itaconic acid
IPC: C07C51/14
Filed: 1959-06-30
Abstract: Itaconic acid is prepared by reacting propargyl chloride in an amount of up to 10% by weight of the mixture with carbon monoxide and nickel carbonyl, the latter being present in an amount less than the stoichiometric amount needed for the formation of nickel chloride with the chlorine in the propargyl chloride in the presence of water and an aliphatic ketone or nitrile solvent, the amount of water being from 1 to 60% by weight of the solvent at a temperature of from 15 to 65 DEG C.  An inert gas may be mixed with the carbon monoxide.  The amount of water is preferably at least 20% in excess of the chemically equivalent amount.  The gases are preferably recycled in a continuous process. 2,3-Butadienoic acid may also be isolated from the product.
Patent GB-948637-A (GB)
Title: A method for the preparation of diazotype material
Inventor: BOER HENRI GERARD JEAN DE
IPC: C08B15/06
Filed: 1960-06-27
Abstract: 948,637. Photographic diazotype materials. LICHTDRUKPAPIERFABRIEK DE ATLAS N. V. June 26,1961 [June 27, 1960], No. 22445/60. Heading G2C. Diazotype material comprises a support carrying the condensation product of a substitute or unsubstituted aminobenzene diazo compound 4 | R-N-A, cyanuric chloride, at least one macromolecular substance containing at least one reactive H atom (and which may be the support itself), and optionally other substances, said condensation product having the formula where A is an aromatic wing system containing a diazo group and optionally other substituents; R is H, alkyl, aryl or aralkyl; M is the residue obtained by removing an H atom from a macro- R | molecular substance; B is Cl, A-NM, OH, NH 2 , R | molecular substance; B is Cl, A-N-, M, OH,  NH. SO 3 H, NHX, NX 2  or OX; and X is alkyl, aryl or aralkyl which may contain sulphonic acid groups. A coupler may be incorporated in the material or may be added after exposure. In Example 1 an aqueous solution of 4-amino-2, 5-diethoxybenzene- 1-diazosulphonate is added dropwise to a suspension of cyanuric chloride in acetone together with ice and subsequently neutralised with sodium carbonate to yield a precipitate which is separated, dried, boiled with casein in 4% formic acid and further treated to obtain a colloidal solution with which paper is prepared, and subsequently further prepared with a 2, 3-dihydroxy-naphthalene-6- sulphonic acid coupler solution: exposure and ammonia development therewith produces a fast blue print. Example 2 describes a somewhat corresponding procedure using strips of regenerated cellulose instead of the casein, and these are exposed and developed in a solution of the same coupler, and Example 3 strips of nylon which are treated with coupler before this procedure. In Example 4 the above diazosulphonate is condensed with taunal, then with cyanuric chloride and finally with casein, and the product is coated on to paper, exposed and coupled with resorcenol to give a fast rose coloured print. Fourteen further examples detail similar preparations, mostly using casein and paper supports but sometimes starting from other diazosulphonates. The macromolecular substances referred to above include also cellulose, paper, wool, silk and polyvinyl alcohol. Specifications 774,925, 775,308, 780,591, 785,120, 785,222 and 916,015 are referred to.
Patent GB-840256-A (GB)
Title: Improvements in and relating to an aiming device for mortars
IPC: F41G1/30
Filed: 1958-07-14
Abstract: 840,256. Sighting apparatus. HOTCHKISSBRANDT. July 14, 1958 [July 18, 1957], No. 22449/58. Class 92. An aiming device for a weapon with barrel A on a mount C and pivotable in azimulti on a baseplate B comprises in combination a sighting apparatus E with telescopic sight and a reference device X with a flat reflecting surface or equivalent means, which when observed through the sight, indicates if the line of sight W-W is perpendicular to it; the apparatus E being slidable on a slideway D fixed on the mount C and orientable to permit reduction of the plan distance between the line of sight W-W and the axis of the weapon V-V to a length equal or less than that of the reference device X when the firing direction is changed. The barrel, pivoted on a ball a to the base-plate B is clamped at c to a yoke e with traversing screw f on a tripod b. Slideway D is a hexagonal bar 2 connected to yoke e through a ball-andspring device 3 which absorbs firing and transit shocks whilst maintaining the bar rigidly in position at an angle u to the weapons axis and at 10-20 degrees to the horizontal to provide best conditions for mean elevation and to avoid obscuration of the reference device. The sight held in a socket on a bracket 4 releasably clamped astride the bar 2. The device X is a paralleloscope having elongated mirrors 47 and 48 inclined at 90 degrees to each other in a vertical plane and mounted so that parallel rays arriving along W-W remain parallel when reflected. The device is levelled on its stand 44 by a bubble 45 and is correctly oriented when a finger 49 that is perpendicular to the mirrors is directed towards the pivot a. The weapon is aimed by aligning graticules in the field of view of the telescope with the reflection of the flap 38 on the front of the telescope seen in the mirrors of the device X; or at night, the reflection of an electric lamp situated inside the sighting telescope (Figs. 6-8 not shown). As an alternative to the flaps, lamp and mirrors, the stand 44 may carry an array of rectangular plates all parallel to the finger 49 and fixed along the length of the support 46. When these plates are viewed exactly end-on from the telescope (Figs. 10 and 11 not shown), so that their sides are not seen, the line W-W is parallel to the finger 49.
Patent GB-454687-A (GB)
Title: Improvements in the preparation of derivatives of pyridine and quinoline
IPC: C07D213/70
Filed: 1935-08-09
Abstract: Quaternary salts of a 2-(substituted mercapto) pyridine or quinoline are made by heating one molecular proportion of a mercaptan with one molecular proportion of a quaternary salt of an iodo derivative of a heterocyclic nitrogen base of the formula <FORM:0454687/IV/1> wherein R is an alkyl or substituted alkyl group, R<11> stands for a vinylene, phenylene, or a substituted vinylene or phenylene group, and X for an acid radicle.  Reaction may take place in a diluent and an acid-binding agent such as a tertiary organic base is preferably present.  In examples: 2-iodoquinoline ethiodide is condensed with phenylmercaptan, p - tolylmercaptan, b  - naphthylmercaptan, p-chlorphenylmercaptan, 2.5 - dichlorphenylmercaptan, n-propylmercaptan, n-butylmercaptan; 2-iodo-6-methylquinoline ethiodide is condensed with b -naphthyl mercaptan; 2-iodopyridine methiodide is condensed with b  - naphthylmercaptan, 2.5 - dichlorphenylmercaptan and 2-p-chlorphenylmercaptan; in all cases condensation is effected in alcohol in presence of triethylamine. Reference is also made to the production of 2-mercaptans of pyridinium or quinolinium salts wherein attached to the sulphur atom is a benzyl, benzthiazole or pyrazolone radicle.  The products are of use in the production of cyanine dyes.
Patent GB-694118-A (GB)
Title: Improvements in or relating to sound reproducing devices
Inventor: CAMRAS MARVIN
IPC: G11B25/10
Filed: 1950-09-14
Abstract: 694,118. Magnetic recording and reproducing apparatus. INTERNATIONAL RESEARCH & DEVELOPMENT CORPORATION. Sept. 14, 1950, No. 22611/50. Class 40 (ii). A sound reproducing device comprises a disc record turntable 18 and a tone arm 23, and also a reel 12 for a magnetic record strip which passes a magnetic transducer head 21 and is wound on a reel 20 which forms an integral part of the turntable 18. A driving motor 30 is provided which can be rocked in trunnions 32 by a control arm 26. It can thus either drive reel 12 directly by friction wheel 91, or drive turntable 18 through wheel 91 and idler wheel 83. Means are provided to brake the reel which is not being driven to keep the magnetic record taut. The magnetic transducer 21 is mounted on a member 67, which is operated to traverse the transducer. by rotation of reel 12, through a gear 53 mounted on the latter acting on wheel 61, and lever 63. The apparatus may be combined with an ordinary radio receiver and switching means are provided so that the following working conditions are obtained. First the apparatus operates as an ordinary receiver, secondly as a disc record player, thirdly as a magnetic record player, fourthly as a magnetic recorder for a radio programme, and fifthly as a public address system.
Patent GB-676310-A (GB)
Title: Improvements in brushes for cleaning the bowls or pans of water closets
IPC: H01G4/228
Filed: 1949-09-01
Abstract: 676,310. Brushes. PROUDLOVE, N., and HOWARTH, W. Aug. 29, 1950 [Sept. 1, 1949], No. 22670/49. Class 19. In a brush of the type formed from tufts of bristles held in position by twisted double wires for cleaning the bowls or pans of water closets the bristles are double trimmed in the centre of their length to form two conical portions and bent into loop form the pointed end being finally bent at right angles to the loop and the ends of the wires inserted into bores in a handle. The bristles are secured in the usual manner between twisted double wires and double trimmed to form two conical portions, the wires being then bent into loop form as shown in Fig. 2 and then at right angles to the loop as shown in Fig. 1 to form a pointed brush. The bristles which are trimmed may be stiffer than those forming the body of the brush.
Patent GB-243479-A (GB)
Title: Improvements in carburettors for use in connection with internal-combustion engines
IPC: F02M7/14
Filed: 1924-09-26
Abstract: 243,479. Cox, A. Sept. 26, 1924. Spray carburettors.-In carburettors wherein the main nozzle is located outside the choke tube chamber and communicates therewith through an atomizing or diffuser tube directed across and at right angles to the bore of the choke tube, the diffuser tube is perforated along its opposite sides only with rows of small holes and is definitely fixed or located in a position such that its perforations are disposed in a plane at right angles or substantially at right angles to the choke tube bore. The main nozzle 20 is located in a housing 29 outside the carburettor body and communicates with the bore of the choke tube 21, through a diffuser tube 24 having two rows of holes 25 arranged and located as stated above. The inner end of the tube fits over a projection 23, whilst the outer end is provided with a head 30 adapted to enter a recess 31 in a boss 28 to ensure the holes 25 being in the correct position. The tube may be held in place by a hinged catch 32 or other suitable device, and may serve as a fixing bolt for the detachable choke tube 21 which has holes 26, 27 for the passage of the diffuser tube. To control the outlet of fuel through the holes 25 and the air drag on the main jet and to cut off the fuel so as to allow the engine to draw in air only, the diffuser tube may be provided internally with a rotatable valve 33, Fig. 6. This is grooved longitudinally at 35, the parts 36 fitting the tube, and is rotatable by a handle 34. Air may be. admitted to the interior of the tube through a, hole or port therein near the boss 28 which registers with an air passage cut along the outside of the choke tube and leading from the main air intake, whilst the part of the valve 33 that registers with this port is formed with an annular groove opening into the grooves 35. Reference has been directed by the Comptroller to Specification 2618/14.
Patent GB-940966-A (GB)
Title: Tunnel diode memory device
IPC: G11C11/38
Filed: 1962-06-13
Abstract: 940,966. Tunnel diode bi-stable circuits. NIPPON ELECTRIC CO. Ltd. June 13, 1962 [June 13, 1961], No. 22770/62. Heading H3T. [Also in Division G4] A matrix memory, Fig. 2, includes at each cross-point a tunnel diode 5 and impedance element 4 connected in series and an ordinary diode 6 connected to the junction of the tunnel diode and impedance element. Data is written into and read from the matrix a row at a time by the application of an appropriate potential to the selected row. Each memory element terminal 1 is connected to a potential +E, terminals 2 being connected to the row wires A1 . . . Am which are normally maintained at a potential E M  to maintain the tunnel diode characteristic at 16, Figs.5 and 6. Writing operation.-In a writing operation the potential of the selected row is raised from E M  to E w , thereby shifting the tunnel diode characteristic to the position 24 and returning the potential to E M , potentials E 0 , E 1  (= 0 volts) being applied to the columns D1 . . . Dn to write a." 0 " or a " 1 " in the selected row as required. When writing a " 0," Fig. 5, the potential E 0  being greater than E w , the ordinary diode 6 is kept cut off and the intersection of tunnel-diode characteristic and the load line 21 follows the path 17-25-17 to finish at point 17 which represents " 0." When writing a " 1," Fig. 6, the potential E 1  (= 0 volts) being less than E w , the ordinary diode 6 conducts and the load line for positive potential follows the line 22, so that the intersection point follows the path 17-29-30-31-32-19, the point 19 representing " 1." During the return of the potential E w  to E M , the intersection follows a temporary load line (shown as a dotted continuation of the line 22) to the point 32 when the potential falls below zero, due to minority carriers in the tunnel diode 5, the stable position 19 being attained when the minority carriers disappear. Reading operation, Fig. 7.-Reading is non- destructive and to read out a selected row the voltage on that row is raised from E M  to E R  (which is less than E w ) and returned to E M , the tunnel diode characteristic taking the positions 16, 36, 16 successively. In the position 36, if an " 0 " is stored, the stable point is at 37 and if a " 1 " is stored it is at 38, so that in this latter case, the ordinary diode 6 conducts to produce an output E out on the corresponding column line D 1  ... Dn. Driving and amplifying circuits.-Each column wire D 1  - - - Dn is connected to a read/ write amplifier, Fig. 3 (not shown), comprising transistors. Each row wire A 1  . . . Am is connected to a circuit, Fig. 8 (not shown), comprising a transistor and adapted to supply the potentials E M , E w , E R  to the corresponding row.
Patent GB-517588-A (GB)
Title: Improvements in means for artificial floral decorations
IPC: A41G1/00
Filed: 1938-08-02
Abstract: 517,588. Lamp supports. GADD, T. V. Aug. 2, 1938, No. 22799. [Class 75 (iii)] [Also in Group VII] Artificial floral decorations comprise a pointed stem 1 mountable at one end on a support, carrying at the other end or ends an electric incandescent lamp 14 in a holder 7 and also carrying a floral decoration 22 built up to present a sleeve 20 about a metal ferrule 17 having prongs 19 and slits to enable it to be sprung over the holder. The electric wires 3 supplying current to the lamp are bound to the stem 1 by wires 5.
Patent GB-976276-A (GB)
Title: Method and machine for making cross-bottomed bags
IPC: B31B70/00
Filed: 1963-06-07
Abstract: 976,276. Making cross-bottomed bags. GARTEMANN & HOLLMANN EXPORT UND FINANZIERUNGS-G.m.b.H. June 7, 1963 [July 20, 1962], No. 22830/63. Heading B5D. [Also in Division B8] A length of tube has its ends folded at right angles as shown by the broken line in Fig. 3, before the ends are folded horizontally on opposite sides of the plane of the tube, coated with adhesive, folded as in Fig. 6 to form crossbottoms, and covered with sheets 11, 11<SP>1</SP>, Fig. 8. In the embodiment shown the tube is fed by rotating suction members which commence separation of its ends. An unfolding yoke 7, 7<SP>1</SP>, Fig. 3, completes unfolding of the ends, along creases previously produced by a fluting device, to form base portions. The base portions are then fluted, folded horizontally, and treated with adhesive before being folded into crossbottoms. The cover sheets 11, 11<SP>1</SP>, Fig. 8, are then applied and these may be folded over one edge of the cross-bottoms and stuck down before the bag is discharged from the machine. To permit filling, a valve tube may be inserted in one of the cross-bottoms during its formation or one of the cross-bottoms may be incompletely glued.
Patent GB-856860-A (GB)
Title: Improvements in or relating to shock-absorbing bearings for movable elements of small mechanisms
IPC: F16C17/08
Filed: 1959-07-03
Abstract: 856,860. Bearings. PARECHOC S.A. July 3, 1959 [Oct. 10, 1958], No. 22945/59. Class 12 (1). A shock-absorbing bearing comprises a pivot bearing 4 having a bezel 5 which is maintained against a frusto-conical seat 6 by means of a frusto-conical coil spring 7, the smallest convolution of which bears against the bezel 5 and the largest convolution of which bears against a flange 1a of a housing 1. Grooves 8a, 8b, 8c and 8d facilitate the removal of the spring 7 by means of tweezers. In a modification, a single large groove is provided in the flange 1a.
Patent GB-500807-A (GB)
Title: Improvements in or relating to glass feeding devices
IPC: C03B7/08
Filed: 1937-08-21
Abstract: 500,807. Making glass articles ; weighing - apparatus; electric automatic control. WOOD, J. T. Aug. 21, 1937, Nos. 22959/37 and 12709/38. [Class 56] Also in Groups XVIII and XXXV] The feed of glass from a forehearth &c. is controlled automatically and electrically by the weight of the articles made therefrom. In the arrangement shown, shafts 5, 7 for vertically adjusting the stops 1, 2 of the feeding plunger 3 are operated through racks 20, 21 by compressed fluid pistons 24, 25 the supply to which is controlled by valves 27, 28 operated by solenoids 34, 35 selectively energized by the engagement of the weighing scale pointer 51 with one or other contact 46, 47. To hold the scale beam stationary a plunger 66 or 67 is automatically raised under the uptilted end by connection with the pipe lines supplying the fluid motors. To prevent incorrect control the electric circuit may not be completed until a master switch 56 is closed by the machine or, as shown in Fig. 5, by the sinking of a dash-pot 59 on which the container is placed. For finer control contacts may be placed half way between those shown on the weighing scale. Instead of combined electric and pneumatic controlling-means the feed control may be exercised by electric motors. Specifications 389,923 and 390,883 are referred to in the Provisional Specifications.
Patent GB-377453-A (GB)
Title: Improvements in or relating to scraping or skimming devices for centrifuges
IPC: B04B11/08
Filed: 1931-08-14
Abstract: 377,453. Centrifugal machines. BURGESS, A. F., 10, New Court, Lincoln's Inn, London.-(Akt.-Ges. der Maschinenfabriken Escher Wyss et Cie. ; 19, Hardturmstrasse, Zurich, Switzerland.) Aug. 14, 1931, No. 22965. [Class 23.] A clarifying centrifuge is provided with a number of skimming or scraping devices permanently mounted in the machine and each adapted to isolate and convey away in succession one of a number of layers which are deposited inside the drum during its operation. The scrapers c, d, e may all be mounted on a common carrier f which is guided on rods g1, g2 at right angles to the drum axis for movement by a piston h. They extend the full width of the drum a and are adjustably mounted to permit the depth of out to be varied. Screw spindles i1, i2 act as abutments to prevent the knives c, d, respectively, from advancing beyond a desired depth of out, stout springs k1, k2 being provided on the mountings to permit the knife e to be fed further forwards. In an alternative construction, the scrapers are pivoted on a common carrier and are moved out of operation at the desired point of their advance by adjustable cam surfaces which engage extension arms on the scrapers.
Patent GB-153429-A (GB)
Title: Improvements relating to the lubrication systems of internal combustion engines
IPC: F01L1/00
Filed: 1919-09-18
Abstract: 153,429. Vulcan Motor & Engineering Co., and Eckersley, E. Sept. 18, 1919. Stop-gear.-A re-setting device for the stop-gear of an internal-combustion engine of the kind having a piston supported by the pressure of the lubricating-system and carrying a device for earthing the magneto consists of a tapered plunger adapted to raise the piston and hold it until released by the increase of the lubricant pressure. In the arrangement shown, a cylinder B<2>, which is connected to the lubricating-system, contains a piston A the rod of which carries a disk C<2> connected to an earthing-wire D. The latter are insulated by washers C<0> and are secured by a terminal D<2>. On failure of the lubrication, the piston is depressed by a spring A', and a finger C on the disk comes in contact with the head of the cylinder B<2>, which is in metallic connexion with the engine cylinder. To re-set the device, a plunger E is pressed forward against the action of a spring, so that a conical head E<3> on the plunger engages a flange C<3> on the disk C<2> and raises the piston. The flange C<3> engages behind the head E<3> and retains the plunger until it is tripped by the rise in the lubricant pressure. The plunger is of insulating material, or is supported on a block E' of insulating-material.
Patent GB-445672-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D65/22
Filed: 1935-08-15
Abstract: 445,672. Internal-expanding brakes. DEUTSCHE PERROT-BREMSE GES., Freidrichsfeld, Mannheim, Germany. Aug. 15, 1935, No. 23014. Convention date, Sept. 19, 1934. [Class 103 (i)] An internal brake comprises two shoes 3, 4 arranged to be freely movable parallel with the periphery of the drum between fixed abutments 2, 2a and operated by bell-crank levers 5, 6 which extend towards and overlap one another and are operated by a common lever 7. The point of application 10 of the lever 7 on the levers 5, 6 is so selected that equal applying forces are exerted on the shoes. The lever 7 is pivoted at 8 and engages the levers 5, 6 by means of a tappet 9. The springs 11, 11<a> are stronger than the springs 12, 12a so that they cause the shoes 3, 4 to seat on the abutments 2, 2a respectively, so that these springs tend to move the shoes in the same direction as the normal rotation of the drum.
Patent GB-892355-A (GB)
Title: Improvements relating to hot stretching and heat setting synthetic filaments
IPC: D02J1/22
Filed: 1960-07-01
Abstract: Continuous synthetic filaments are simultaneously hot-stretched and heat-set by guiding them in their path of travel from a feed roll to a draw roll so as to travel over and in continuous contact with a heated surface in the form of one or more helical loops, the heating of the surface increasing in the direction of travel of the filaments so that the temperature of the surface at the zone where the filaments leave the surface is higher than the temperature at the zone where the filaments first contact the surface.  The surface may be the outer surface of a tubular element, the thickness of the wall of which decreases progressively from the end at which the filaments leave the element to the end at which the filaments first contact the element, the former end being heated by direct heating.  The heated <PICT:0892355/IV (a)/1> surface has a hot-stretch temperature in the zone where the filaments first contact the surface and a maximum setting temperature in the zone where the filaments leave the surface. The tubular heating elements may be composed of sections of different metals with decreasing thermal conductivity towards the first zone.  As shown, a polyethylene terephthalate yarn is drawn off a feed roll by a pair of nip rolls 1 and travels in a helical path over an elliptical head 2 to a hollow conical member 3 from which it is drawn off by a draw roll 4 at a draw ratio of 4:1.  The member 3 is of chrome plated iron and has a wall thickness of 5 mm. at the bottom end and 3 mm. at the upper end.  An electrically heated metal block projects into the lower portion of the element, the temperature of the outer surface of this portion being thereby maintained at 200 DEG C., decreasing continuously to 70 DEG C. surface temperature at the upper end of the element.  The elliptical head 2 may be rotatable.