baber/WOPTO huggingface dataset:
Patent GB-1089883-A (GB)
Title: Crosslinkable macromolecular polyethers
Inventor: NAARMANN HERBERT
IPC: C08G65/22
Filed: 1965-02-03
Abstract: Vulcanizable polyethers are prepared by reacting an epoxy compound of the general formula <FORM:1089883/C3/1> or <FORM:1089883/C3/2> in which R is H or CH3 and n is 1 to 3, in the presence of a halogen-containing Friedel-Crafts compound of a Group IIIa, IVa or IVb element and/or an alkyl derivative of a metal of the said Groups, and at temperatures of -50 DEG  to +150 DEG  C.  The process may be carried out in the presence of inert diluents and a minor amount of the corresponding saturated epoxide may also be present. A temperature of -10 DEG  to 50 DEG  C. is preferred.  Suitable catalysts include titanium (IV) chloride, tin (IV) chloride' aluminium chloride, triethyl aluminium, tetrabutyl titanium, and zirconium oxychloride. The examples describe the polymerization of butenediol monoglycidyl ether, hexynediol monoglycidyl ether, octenediol monoglycidyl ether and a mixture of hexenediol monoglycidyl ether and octynediol monoglycidyl ether, the products being vulcanized with conventional agents.ALSO:The compounds <FORM:1089883/C2/1> and <FORM:1089883/C2/2> are prepared by reacting the corresponding olefinically or acetylenically unsaturated diols with epichlorohydrin in the molar ratio of 1:1 at temperatures between about -10 DEG  and +10 DEG  C., with boron trifluoride dietherate, and then converting the products into the corresponding epoxy compounds by eliminating hydrogen chloride with sodium ethorate.  The process is exemplified using but-2-ene-1,4-diol and epichlorohydrin to give 1-(1-chloro-2-hydroxypropoxy) - but - 2 - ene - 4 - ol and, on elimination of hydrogen chloride, but-2-ene-1,4-diol monoglycidyl ether.  Hexenediol, octenediol, butynediol, hexynediol and octynediol are also mentioned as reactants with the epichlorohydrin.
Patent GB-663229-A (GB)
Title: Improvements in weighing machine
IPC: G01G13/00
Filed: 1949-02-21
Abstract: 663,229. Photo-electric weighing apparatus. PNEUMATIC SCALE CORPORATION, Ltd. Feb. 21, 1949, No. 4697/49. Class 40 (iii). [Also in Group XVIII] An automatic feed weigher (see Group XVIII) comprises a weigh beam, material feeding means, stiff springs for resisting movement of the beam and which allow the beam to move only during the last part of the weighing operation, during which the load-receiving end of the beam moves rapidly through a very small distance, and a highly-sensitive photo-electric control means, responsive to movement of the beam, for terminating the operation of the material feeding means. As shown in Fig. 10, movement of a member 280 secured to the beam 100 first partially and then wholly cuts off the light from a lamp 272 falling on a photo-cell 270 which then successively energizes a pair of pre-set relays 284, 286, through an amplifier 282, and so energizes solenoids 36, 38 which effect the dribble feed and cut-off.
Patent GB-252249-A (GB)
Title: Improvements in loose letter or like signs and means for affixing same
IPC: G09F7/16
Filed: 1925-02-20
Abstract: 252,249. Democratis, S. J. Feb. 20, 1925. Securing. - Metallic letters or other characters for building up loose letter &c. signs, price tickets &c. are attached to a pierceable support, such as a cork &c. sheet, by pins &c. of small diameter secured to the letters by soldering, by frictional grip or like means. The pin a, Fig. 1<a> is soldered to the letter A and the point is then bent at right angles as shown. Two or more pins a, Fig. 3, of unequal length may be provided to facilitate the spacing and alignment of the letters on the support, the letter being first positioned by means of the longest pin and then all the pins are pushed into the support. The pin a, Fig. 4a, is passed through a perforation in the letter A and secured by soldering. A hole may be pierced in the letter A, Fig. 7, by the pin a which is then broken off, pushed further in and secured by burring over the edges of the depression p, Fig. 7<c>. Conical headed pins may be used and the pins may be secured to the feet of the letters to attach the letters in a vertical position to the support. Specifications 226,860, [Class 3 (ii). Advertising &c. other than by moving &c.] ; and 248,094 are referred to,
Patent GB-1488585-A (GB)
Title: Gas filter
IPC: B01D46/24
Filed: 1975-02-05
Abstract: 1488585 Gas filters D A YANOV V V KAMENKOVICH A A VOLOSHIN V I DJUMULEN V E BABENKO B A ILIN I V ZACHESOVA and V M VODOPYANOV 5 Feb 1975 4861/75 Heading BIT A gas filter comprises a hollow stationary shaft 3 on which are mounted stationary discs 4 and rotatable scrapers 6. As shown each scraper comprises two blades 9 and a pin 15. During use the pin 16 on cog wheel 14 drives adjacent scraper 6, the rotation of which is transmitted in succession to the other scrapers through the pins 15 engaging the blades of adjacent scrapers. The blades of a scraper may be relatively movable so that the distance between their scraping edges and the adjacent filtering surfaces is changeable. In use gas enters through inlet 19, passes inwardly through the discs 4 and discharges through outlet 20.
Patent GB-691767-A (GB)
Title: Improvements in and relating to foil lubricating mechanism for automatic blanking and forming tools and the like
Inventor: CLARK JOHN MCKINLAY
IPC: B05C1/08
Filed: 1951-02-28
Abstract: 691,767. Metals, stamping. MILK-FILLERS, Ltd. Feb. 28, 1952 [Feb. 28, 1951], No. 4895/51. Class 83 (iv). Lubricating work.-Appar. atus for lubricating foil strip as it is fed to press tools comprises a rotatable drum the peripheral surface of which is formed with a number of teeth or projections and which is caused to revolve by movement of the strip in contact with the surface, the teeth or projections being adapted to dip into liquid lubricant in a container during the lower part of their travel and to deposit lubricant on the strip during the upper part of their travel. As shown, a track 1 in front of foil feeding mechanism is provided with an oil sump 4 in which is mounted a rotatable drum 5. The drum is formed with teeth or projections 6. A pad 7 loaded lightly by springs 8 bears against the strip, pressing it against the drum, whereby the drum is caused to revolve and the projections 6 deposit spots of oil along the underside of the strip.
Patent GB-944815-A (GB)
Title: Article release and transfer device
IPC: B65B7/28
Filed: 1961-02-10
Abstract: 944,815. Feeding closure caps. ALUMINUM CO. OF AMERICA. Feb. 10, 1961 [Feb. 12, 1960], No. 5004/61. Headings B8S and B8T. Closure caps are delivered one by one from magazine 11 by cams 12 and 13, the bottom cap falling into recess 42 of rotating wheel 14 which delivers it to an oncoming bottle. The cams 12 and 13 are driven from shaft 17 via gears 21, 22, 23, 24, 25 and are formed with an upper ledge 32 a lower ledge 34 and a cam groove 31. Arresting members 15, 16, Fig. 3. Arresting members 15, 16 are pivoted about the spindles 26, 27 of the respective cams 12, 13 and are operated by air cylinder 40 through bell-cranks 36 and 37. A detector 41, not shown, detects when there is a missing bottle in the incoming stream of bottles and causes air cylinder 14 to operate the arresting members 15, 16 to move it inwards of the magazine 11 and to hold up the discharge of the cap corresponding to the missing bottle. The next bottle causes the cylinder to release the arresting members
Patent GB-357473-A (GB)
Title: An improved process for the production of a fertilizer mixture and the product produced thereby
IPC: C05B11/06
Filed: 1931-02-17
Abstract: A fertilizer is produced by decomposing crude phosphate with nitric acid in the presence of potassium sulphate and treating the reaction product with gaseous ammonia as long as any water escapes.ALSO:A fertilizer is produced by decomposing crude phosphate with nitric acid in the presence of potassium sulphate and treating the reaction product with gaseous ammonia as long as any water escapes.
Patent GB-902868-A (GB)
Title: Improvements in or relating to the testing of electric lamp circuits
Inventor: ALLWOOD WILLIAM NORMAN
Filed: 1960-02-12
Abstract: 902,868. Testing for continuity. GENERAL ELECTRIC CO. Ltd. Jan. 10, 1961 [Feb. 12, 1960], No. 5059/60. Class 37. A series of lamps L in holders H can be tested for a disconnection (including a faulty filament) by commoning the terminals 6 in a plug and socket arrangement 10 and connecting them to one side of a supply source 4, the other supply terminal of the source being connected to a thin resilient probe 12 which can be inserted between a lamp and its holder to make a contact. A resistor 8 approximately equal in value to the resistance of the lamps may be connected on either side of the test supply.
Patent GB-663851-A (GB)
Title: Apparatus for modifying electric signals in accordance with a desired function
IPC: H03H1/00
Filed: 1948-02-20
Abstract: 663,851. Electron beam tubes. WESTERN ELECTRIC CO., Inc. Feb. 20, 1948 [Feb. 27, 1947]. No. 5095/48. Class 39 (i). An electric wave is modified, in the manner of a transversal filter by causing the wave to control the intensity of a cathode-ray beam which is moved cyclically over a target consisting of charge storage elements, the beam or the charges stored on the target being modified by a weighting function. The resulting charges are then combined from the different parts of the target and cyclically integrated to produce the output. It is shown that the weighting function g(t) is the time rate of change of the indicial admittance. The effect of applying a wave potential E(t) to a network N, Fig. 1B, is considered. The wave may be regarded as a series of pulses, Fig. 1C, the output wave being obtained by adding the resultant currents. As the individual pulses approach zero duration the output tends to be proportional to the g-function. The tubes described carry out the processes involved to produce the desired output current. An input signal, applied to the grid 308 of a cathode-ray tube, Fig. 3A, controls the intensity of the beam. An oscillator 316 controls X and Y time base generators 314, 315 generating rapid vertical sweeps and slower horizontal sweeps, a circuit 329 supplying black-out waveforms during the fly-back periods. The charge appearing on the conducting strips 317 is modified by passing the beam through a screen 327 of variable mesh, Fig. 3B, the grading g0 ... g6 being in accordance with the value of g(t) over the period during which this function is effective. During any vertical sweep the beam intensity may be regarded as substantially constant so that a charge proportional to the input potential function multiplied by the appropriate g-function is set up in each vertical column. This charge, together with charge accumulated during the other vertical sweeps is collected by an arm 323 rotating in synchronism with the horizontal time base. The resulting current in resistor 326 is shown to. have the desired waveform. Modifications. Fig. 4A shows a double beam tube in which a charge pattern is set up in the boxes 418 in accordance with the potential function E(t). This charge is modified by feeding through weighting resistors 419 to vary the potential of secondary electron emitting plates 429, thus varying the potential of the anode 431 as the secondary beam from the lower gun sweeps over the plates. In a further modification, Fig. 4B (not shown), the horizontal rows of boxes are replaced by plates shaped according to the g-function. Alternatively, the configuration of the strips may be such that the capacity between each strip and the backing member varies in its length according to the weighting function.
Patent GB-724945-A (GB)
Title: Improvements in or relating to electric lamps
IPC: H01K1/16
Filed: 1953-02-24
Abstract: 724,945. Electric incandescent lamps. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 24, 1953 [April 10, 1952], No. 5112/53. Class 39 (2). In order to obviate mechanical defects that may arise due to the welding of a leading-in wire to an end of a lamp filament made of a different metal, a looped metal member is welded over the weld between leading-in wire and filament. In an example a sleeve 23 of nickel is placed around the lower end of a nickel leading-in wire 17 prior to the welding of the flattened upper end of the latter to one end of a tungsten filament 18 (the weld being shown at 22) and is subsequently lifted to surround the said weld and then flattened, as shown in Fig. 3, and welded in place. Alternatively a U-shaped plate member, which provides an open loop, may be used instead of a nickel sleeve. The three piece weld may be performed in one operation after squeezing the respective ends of the filament and leading-in wires together between the tube or loop. The tube or loop may be made of a metal such as zirconium or thorium, having gettering properties.
Patent GB-374816-A (GB)
Title: Frames for bicycles or motor-cycles
IPC: B66D1/02
Filed: 1932-02-22
Abstract: 374,816. Cycle spring frames. GLASER, A., 68, Stromstrasse, Berlin. Feb. 22, 1932, No. 5211. Convention date, Sept. 10, 1931. [Class 136 (iii).] A cycle frame consists of two spring arms b which are secured to the crank bracket a and support the saddle d and the steering head f. As shown, the arms b are integrally formed from a single length of resilient tubing bent into approximately V-shape. The rear fork h is secured in an extension a<1> of the crank bracket a.
Patent GB-199760-A (GB)
Title: Improvements in and relating to the production of formaldehyde by catalysis
IPC: C07C45/38
Filed: 1922-02-22
Abstract: In the catalytic oxidation of methyl alcohol to formaldehyde in the presence of steam, the amount of oxygen-containing gas present relative to the methyl alcohol does not substantially exceed the proportions corresponding with one molecule of oxygen to two molecules of methyl alcohol.  The steam is preferably introduced as dry superheated steam and the proportions by weight of steam relative to methyl alcohol preferably vary from 1 : 24 to 1 : 9. The passage of the gaseous mixture over the catalyst may be facilitated by the use of pressure or suction.
Patent GB-1095206-A (GB)
Title: A method of preparing a reverse osmosis membrane
Filed: 1966-02-07
Abstract: 1,095,206. Cellulose ester films. ARTHUR D. LITTLE RESEARCH INSTITUTE. Feb. 7, 1966 [Oct. 1, 1965], No. 5219/66. Heading B5B. A method of preparing a reverse osmosis membrane comprises dissolving a film-forming cellulose ester and a swelling agent in an organic solvent, casting the solution thus obtained to form a nim evaporating at room temperature a portion of the organic solvent from the cast film, immersing the cast film in water to remove organic solvent, and heating the cast film in water. Preferably the ester is cellulose acetate, but the acetyl group may be substituted by a suitable acyl radical, e.g. the formyl, propionyl, or butyryl. The swelling agent may be an aqueous solution of a perchlorate salt, e.g. magnesium perchlorate, or sodium perchlorate, or zinc chloride or phenol, and the organic solvent may be acetone. Suitably, a portion of the organic solvent is evaporated at an ambient temperature of at least 15 C. for about one minute, and the cast film is heated in water at a temperature in the range of 60 to 80 C., especially at about 73 C. for about 15 minutes. The cast film may be immersed in water at from 0 C. to ambient temperature. In a preferred embodiment, a membrane suitable for use in reverse osmosis demineralization processes is made by casting a solution consisting essentially of 22À2 parts by weight of cellulose acetate, 66À8 to 67À8 parts acetone, 10 parts water, and about one to three parts of swelling agent to form a film, evaporating acetone from the film at a temperature of at least 15 C. for a period of from 1-3 minutes, immersing the film in an aqueous bath consisting essentially of water at from 0 C. to ambient temperature, and heating the film in an aqueous bath at a temperature of 60-80 C. Alternatively, such a membrane may be made by casting a solution consisting essentially of 22À2 parts by weight of cellulose acetate, 66À8 parts acetone, 10 parts water and about 1 to 3 parts of swelling agent to form a film having a substantially uniform thickness up to about 0À01 inch, evaporating acetone from one surface of the film, at a temperature of at least 15 C. for a period of not more than about 1. minute, immersing the film in an aqueous bath consisting essentially of water at from 0 C. to ambient temperature, and heating the film in an aqueous bath at a temperature of about 70 to 75 C. In both embodiments, preferred swelling agents are magnesium perchlorate or zinc chloride, the film being immersed in water at a temperature of about 15 C., or alternatively at from 0 to 2 C., and the cast film then being heated in an aqueous bath at 73 C. Examples are given.
Patent GB-948918-A (GB)
Title: Improved photographic film
Inventor: GUESTAUX CLAUDE LOUIS
Filed: 1960-02-15
Abstract: 948,918. Photographic films; antistatic layers. KODAK Ltd. Feb.15, 1960 [Feb.16, 1959], No. 5236/60. Heading G2C. A photographic film comprises a support, a light sensitive silver halide emulsion layer on one side of the support and, on the other side of the support, an antistatic layer which is undyed and insoluble in aqueous alkaline photographic developer solution and which comprises a homopolymer or copolymer of styrene. The copolymer may for example be formed from styrene and budadiene. The polystyrene, in a solvent, may be coated on to the back of a film before or after the formation of the silver halide emulsion layer thereon. Suitable solvents referred to include chlorine substituted solvents such as trichloroethylene, methylene chloride, chloroform; ethyl and amyl acetate; ketones such as methyl ethyl ketone and methyl isobutyl ketone; and aromatic hydrocarbons such as toluene and xylene. Orthochlorophenol is added to the solution when polyester films are used to ensure good adherence of the antistatic layer. A lubricant comprising one of the paraffins, waxes or a compound such as stearic acid, or glycerin oleate may be incorporated in or coated on the antistatic layer. Film supports referred to include cellulose acetate and other fatty acid esters of cellulose, polyesters-(for example polyalkalene terephthalate),polyamides,polycarbonates and polyvinyl chlorides.
Patent GB-433622-A (GB)
Title: Improvements in and relating to electric contacts
IPC: H01R13/18
Filed: 1934-02-17
Abstract: 433,622. Plug-and-socket couplings. COOK, C. R., Chesworth, Horsham, Sussex. Feb. 17, 1934, No. 5281. Addition to 352,102. [Class 38 (i)] The inclined slots described in the parent Specification are now continued to one end of the socket and an encircling spring is provided to ensure contact of the sections with the plug. A two-coil spring 3 may be used and may be housed in a groove 4. The socket may be made by turning the open end to a rounded or flared form before slotting, or a tapered socket may be used, the spring serving to produce the inwardly bulged formation.
Patent GB-1172053-A (GB)
Title: Vibration Dampened Spring Unit
IPC: E05B17/00
Filed: 1968-02-02
Abstract: 1,172,053. Springs. FORD MOTOR CO. Ltd. 2 Feb., 1968 [13 Feb., 1967], No. 5350/68. Heading F2S. " Twang " of a helical spring, as used, e.g. in a vehicle door latch, is avoided by fitting a damping element 36 inside the coil. The element takes the form of an initially flat strip which is longer than the coil and also slightly wider than the internal diameter of the coil. When fitted inside the coil 12 it is bowed as shown in Fig. 2. The ends of the strip may contain holes 38, Fig. 3, to allow for insertion of the strip by use of a hook ended tool. The ends 37 may also be of greater width than the intermediate part of the strip 36, so that the strip once inserted is prevented from sliding out of the coil. The strip may be made of polyester or cardboard.
Patent GB-1181823-A (GB)
Title: Cine Film Editing Apparatus
Inventor: GOTO TADASHI
IPC: G03B1/50
Filed: 1967-02-03
Abstract: 1,181,823. Cine film editing apparatus. T. GOTO. Feb.3, 1967. [Feb.4, 1966; Feb.25, 1966], No.5437/67. Headings G2E and G2J. A cine film viewer or editor for films of different frame sizes comprises a prism having pairs of opposite and parallel faces rotatable about its axis, a gate to support a film between a light source and the prism, means for feeding the film past the prism and to rotate the prism, and a lens system arrangeable between the gate and the prism to bring the projected images of the different frame sizes to the same size on the prism. In the detail shown in Fig.5, the film 33 is fed by a sprocket wheel 27 and rollers 26 across a gate which may be a rotatable apertured hollow cylinder 39 mounted about a square prism 36. The cylinder has an aperture 48, the size of the frames of a first film, and a second aperture 49, the size of the frames of a second film, which has a lens therebelow which brings the projected image of the second film to the same size as the projected image of the first film. The cylinders may have film-guiding walls. Alternatively, the gates may be in the form of a slide. The sprocket wheel 27 may have two sprockets thereon for different films and may be reversibly mounted on a shaft 37 such that either sprocket may be used. The sprocket wheel 27 is geared via gears 40, 41 to the prism 36 such that they rotate together. A conventional optical system 45, 46 projects the frame image to a ground glass screen.
Patent GB-1000153-A (GB)
Title: Improvements in or relating to methods of producing electricity in fuel cells
IPC: H01M8/00
Filed: 1962-02-13
Abstract: 1,000,153. Fuel cells. LEESONA CORPORATION. Feb. 13, 1962 [Feb. 15, 1961], No. 5560/62. Drawings to Specification. Heading H1B. A fuel cell reacts hydrogen and iodine in an electrolyte of hydroiodic acid, the latter being recovered and decomposed by heat to recycle the reactants. The cell construction of Specification 1,000,154 may be used to carry out the method.
Patent GB-525238-A (GB)
Title: Improvements relating to mortarless furnace brickwork
IPC: F27D1/00
Filed: 1939-02-20
Abstract: 525,238. Furnace arches, linings &c. OSTERREICHISCHE MAGESIT AKT.-GES. (formerly OSTERREICHISCHE AMERIKANISCHE MAGNESIT AKT.-GES). Feb. 20, 1939, No..5667. Convention date, March 8, 1938. [Class 51 (ii)] Mortarless brickwork for furnace linings, arches and the like is constructed by providing metallic grids between the bricks to hold them at the requisite distance apart to allow for expansion. The grids may be formed of bars which are narrow or may be made of round wire or wire netting. The grids may be thicker towards the source of heat