baber/WOPTO huggingface dataset:
Patent GB-344645-A (GB)
Title: Device for the evaporation of the solvents in the manufacture of papers and films from cellulose esters and ethers
IPC: B29C48/91
Filed: 1930-02-24
Abstract: Apparatus for the manufacture of films or sheets from solutions of cellulose esters or ethers in volatile solvents comprises a casting cylinder or the like enclosed in a chamber which is sub-divided into several compartments preferably four, in each of which one or more heating bodies such as radiators are provided and is characterized in that as the amount of solvent to be evaporated in the separate compartments decreases the radiators are arranged nearer to the casting surface of the cylinder.  The cylinder may be replaced by a metal band or endless band provided with a suitable coating.  In order to avoid stagnation of solvent vapours, the radiators in the first compartment are arranged at a considerable distance from the casting cylinder.  In the second compartment where the proportion of solvent in the film is less than in the first compartment, the radiators are placed nearer to the casting surface thus effecting a greater heating of the film, but owing to the smaller quantity of solvent evaporated, the removal of vapour from the surface of the film is not impeded.  If additional heating is required the temperature of the radiators may be increased.  In the succeeding compartments, the radiators are arranged still closer to the casting surface so that the greatest heat is obtained in the last compartment before the film leaves the casting chamber.  The last traces of the solvents may be removed by passing the film through a vessel containing hot or cold water.  The film leaves this compartment coated with water vapour and thus the production of static electricity on the film is avoided.  The evaporation of the water adhering to the surface of the film is effected automatically by the heat of the film itself or by a separate device.  The solvents evaporated from the film may be recovered by condensation or absorption.
Patent GB-567108-A (GB)
Title: Improvements in or relating to roller boxes for lathes
IPC: B23B29/16
Filed: 1943-04-16
Abstract: 567,108. Turning. B.G. (LONDON), Ltd., [trading as DULCI CO.], and HARRIS, C. S. April 16, 1943, No. 6134. [Class 83 (iii)] In a combined tool and work rest the cutter 1 is secured to a slide 6 adjustable by a nut 14 in a guide slot 15 in a head 3 which has a hollow shank 30 for attachment to a lathe slide. The cutter rests on an L-shaped pad 10 engaging the inclined base of a slot in the slide 6 and is clamped therein by two screws 11. An - L shaped setting block 7 on the head has a face 7a parallel to the guide 15 for the slide 6 which serves to set the cutting edge 1a in line with the centre of the work 2, the cutter being tangential to the work but inclined to a transverse plane, as shown in Fig. 3. The adjusting nut 14 is secured against axial movement by a U-shaped plate 21 engaging a flange 20 thereon and has a graduated dial for re-setting the cutter to a previous position, clamping of the slide 6 being effected by screws 12. Two roller steadies 4, 5 support the turned work opposite the cutter and are mounted on slides 8, 9 adjustable radially by hand and clamped in slots 22 in the head by screws 23.
Patent GB-1176128-A (GB)
Title: Method of Positional Control of Ion Beams in Mass Spectrometers.
Inventor: BOYER ROBERT
IPC: H01J49/30
Filed: 1968-02-08
Abstract: 1,176,128. Mass spectrometers. COMMISSARIAT A L'ENERGIE ATOMIQUE. 8 Feb., 1968 [21 Feb., 1967], No. 6190/68. Heading H1D. [Also in Division G3] In a method of maintaining constant the paths of ion beams in a mass spectrometer or in a mass separator, e.g. for separating uranium isotopes, despite fluctuations in the supplies of the magnetic field and of the acceleration voltage, an ion beam which is not utilized in the analysis or separation is collected across the slit of a control collector and the difference in the ion currents received on the two lips of the slit which are insulated from each other is measured and utilized to control the acceleration voltage or the intensity of the magnetic field to cancel the difference in the ion currents. The ion currents are supplied to a differential amplifier to derive an error voltage representing the unbalance of the ion currents. As shown in Fig. 5 the voltages derived from resistors 22, 22<SP>1</SP> by the ion currents received at 11, 11<SP>1</SP> are supplied to differential amplifiers 24, 25, the negative inputs of which provide a variable negative feedback serving to balance the gains to that the output voltage E is zero in respect of nominal values of the accelerating voltage and the magnetic field. By measuring the voltage E at 26 this voltage can be set to zero. The voltage E is applied to a dissymmetrical amplifier 29 to provide a voltage E<SP>1</SP> with respect to ground. The voltage E<SP>1</SP> is then applied to the base of an N-P-N type transistor 30 which operates as a variable resistor in the regulating chain 31 of the voltage supply 35. The voltage at the point O which is therefore dependent on the error voltage E drives the amplifier 34 which regulates the supply 35. Transistorized or vacuum tube amplifiers may be used. The slit control collector assembly comprises, Fig. 3, a stack of metallic and mica strips 8-13 mounted on a carriage 15 which can be adjusted in position along guides 16 by means of a rod and fork mechanism 17, 18. The stack comprises, in order, a stainless steel diaphragm 8 provided with a slit, a mica strip 9 pierced by a rectangular opening, an identical mica strip 10 in which are set two copper strips 11, (11<SP>1</SP>) forming the lips of the collector slit, a further mica strip 12 with a rectangular opening and a copper strip 13 which is connected to ground.
Patent GB-540145-A (GB)
Title: Improvements in and relating to fluid pressure servo-operated devices
IPC: B60T15/04
Filed: 1940-04-05
Abstract: 540,145. Fluid-actuated valves. ASSOCIATED EQUIPMENT CO., Ltd., and PRIDDLE, A. T. C. April 5, 1940, No. 6192. [Class 135] [Also in Group XXXIV] A fluid-pressure servo system, particularly applicable to wheeled vehicle braking systems, including a manual or pedal control member and one or more pressureoperated members applying the operating effect is provided with means for grading the operating effect in such a way that it increases at a comparatively slow but steadily increasing rate during one part of the travel of the control member and increases at a steadily increasing higher rate during another part of the travel of the control member. In the servo-braking device shown a lever operated by a pedal acts upon the upper end of a variable-rate spring 1 by means of a member 2 guided in a casing 3 and a piston 4 is depressed against the action of a uniform-rate spring 5 by the lower end of the spring 1 to close an exhaust valve 6 and later to open a main valve 7 against the pressure of a spring 9 to admit pressure fluid through a port 71 to the brake-applying members by way of passages 18 and port 8 ; the valve 7 is connected for actuation to the valve 6 by members 10 and 11, carried by pistons 14 and 16 respectively, with a lost-motion connection 12. The admitted pressure raises piston 4 against the opposition of spring 1 so that the valve 7 is shut, the upward motion of the piston being opposed by the spring 1 and the brake pressure held until release of the pedal-operated lever allows the piston 4 to move upwards again until the springs 1 and 5 balance and the exhaust valve 6 opens. Specification 515,440, [Group XXXIV], is referred to.
Patent GB-917481-A (GB)
Title: A method of cleansing the interior surfaces of tanks
IPC: B08B9/08
Filed: 1959-02-23
Abstract: 917,481. Cleaning tanks. INTERNATIONAL GROOM CO. G.m.b.H. Feb. 23, 1959 [Feb. 27, 1958], No. 6194/59. Class 138 (1). [Also in Group XXVIII] Ships' and other storage tanks, pipe lines, heat-exchangers, &c. are cleaned by washing with an aqueous cleansing liquid, and then permitting the mixture of cleansing liquid and removed oily deposits to stratify in the presence of a surface-active agent comprising a poly. glycol eblar such as polypropylene polyethylene oxide or a condensation product of stearyl or octadecyl alcohol and ethylene oxide. Preferably the cleansing liquid should contain an electrolyte or electrolyte mixture selected from sodium phosphates, sulphate, nitrate, chloride, carbonate, and metasilicate. The washing may be effected by projecting the cleansing liquid by nozzles on to the surfaces to be cleaned and returning the used liquid to a separating vessel from which the stratified oils are removed and the cleansing liquid used again. Preferably, the cleansing liquid and the mixture returned to the separating vessel are heated, and the stratified layers in the separating vessel may also be heated if desired. Specification 696,631 is referred to.
Patent GB-1129164-A (GB)
Title: Method and apparatus for making electrographs
IPC: G03G5/024
Filed: 1965-10-12
Abstract: 1,129,164. Electro-photography. KATSURAGAWA DENKI K.K. Oct. 12, 1965 [Oct. 20, 1964], No.6201/68. Divided out of 1,129,163. Heading G2H. A method of electro-photography comprises the steps of applying a first electric field of one polarity, by means of a corona discharge electrode, across a photo-sensitive element including a first layer of photo-sensitive material of photo-conductive type and a highly insulative layer which is transparent to visible light and which is integrally bonded to one side of said first layer, said corona discharge electrode being disposed in close proximity to but spaced apart by a definite distance from the surface of said highly insulative layer; moving said corona discharge electrode relative to said photo-sensitive element to scan the surface thereof, applying a second electric field of the opposite polarity across said photo-sensitive element by means of said corona discharge electrode; again moving the electrode to scan the element surface; exposing said photo-sensitive element to an information containing light image concurrently with the application of said second field whereby the form an electrostatic latent image on said highly insulative layer corresponding to the light image by the electric charge applied to the surface of said highly insulative layer, said latent image being characterised by being not erased by later light irradiation. First and second corona discharge electrodes may be used to apply the electric fields, each electrode being continuously movable relative to the photo-sensitive element to scan the surface. When a single electrode is used, both the electrode and the photo-sensitive element may be movable relative to each other to scan the surface. Apparatus for continuous electro-photography by the above method consists of:- 1. A rotating cylinder 12 whose surface carries a photo-sensitive element comprising photo-conductive layer 1 integrally bonded on to a conductive electrode layer 3 of aluminium foil, layer 1 being covered by an integrally bonded transparent layer 2 of highly insulating material. 2. A first corona discharge electrode 13 by which the photo-sensitive element is charged initially at, say 7000V. in darkness, the electrode being partly enclosed in a cylindrical grounded shield. 3. A second reversed polarity corona discharge electrode 10 within a grounded shield having a transparent plate 9 for simultaneous chargeing during exposure. 4. A lens system 15 whereby an image of moving object 14 is projected through plate 9 on to the surface 2 moving at the same speed as the image, shield 16 screening all light from the cylinders outside the regions of electrode 10. The photo-sensitive element is of the type disclosed in Application No. 30713/65 (ser. No.....) and this form of exposure and charging produces an electrostatic charge image on layer 2 which is unaffected by further exposure to light. Dry powder development is used, and the developed image may be transferred to a receiving paper The single electrode apparatus is as in Fig. 7 (not shown).
Patent GB-288011-A (GB)
Title: Improvements in and relating to pit props
IPC: E21D15/02
Filed: 1927-03-07
Abstract: 288,011. Knighton, T. March 7, 1927. Mine props. - A mine prop is formed of upper and lower wooden members d, p and a capped exterior metal casing c disposed over them so that the cap bears on the top of the upper member and the lower end extends down to below the contacting point of the members. A metal plate e may be inserted between the contacting ends of the wooden parts and the ends of the casing may be stiffened by sleeve members a, f. The end of the lower wooden member is tapered so that it crushes easily.
Patent GB-1098641-A (GB)
Title: Improvements in or relating to thermostatic devices
Inventor: SAWYER WILFRED ALBERT
IPC: H01H37/12
Filed: 1964-02-14
Abstract: 1,098,641. Temperature responsive actuating elements. SATCHWELL CONTROLS Ltd. Feb.4, 1965 [Feb. 14, 1964], No.6368/64. Heading G1D. A liquid filled thermostat comprises a phial 2 which is exposed to a source of heat and connected to a first expansible element 3 e. g. a bellows or diaphragm, and also to a second expansible element 15, pre-loaded by a spring 16 and which is arranged not to expand appreciably until the pressure within the system rises above the range covered by the element 3. The thermostat may be used in an electric oven where high temperature cleaning is employed. In normal use the temperature is controlled by the element 3 which actuates a magnetic snap acting switch 14 by way of a lever, adjustably pivoted on a support 10, and a pusher 13. When cleaning is carried out, the temperature rises above the range covered by the element 3 and the second element 15 expands against the action of the spring 16 whose tension is set so that no appreciable expansion occurs until a desired pressure in the system is exceeded.
Patent GB-813418-A (GB)
Title: Improvements in anti-slip devices for the wheels of motor vehicles, in particular agricultural tractors
IPC: B60B15/00
Filed: 1957-02-26
Abstract: 813,418. Tractor wheel attachments. COLIN, L. Feb. 26, 1957 [March 1, 1956], No. 6433/57. Class 144 (1). In a ground-gripping attachment, for a tractor wheel, of the kind wherein groundengaging spades 12 are operatively projected or inoperatively retracted by rotation of a movable ring 2, to which the spades are pivoted on pins 13a, relatively to a fixed ring 1 which is disposed concentrically within the ring 2 and to which the spades 12 each have a pin and slot connection 14a, 14, rotation of the ring 2 is effected by a jack C which has two parallel pegs 21, 22 provided one on each of the relatively movable parts t and c of the jack to engage respectively in holes 23 in the fixed ring 1 and either holes 25a, 25b in the movable ring 2 or a hole 28 in one of the spades 12. As shown the fixed ring 1 is of T-section with its web bolted between fork members 8b of a series of circumferentially spaced U brackets 8, Fig. 9, which are resiliently bolted through rubber blocks 7 to the axially outwardly projecting legs 6a of angle lugs 6 which are in turn bolted spoke fashion to 'a hub plate 4 of the wheel. The movable ring 2 is also of T-section with its cross member rotatably engaged on that of ring 1, the two bearing surfaces having circumferential grooves 2b, 1b, which co-operate to form a grease-receiving channel 3, Fig. 8. Each ring 1, 2 has apertured bosses 16a, 15a which receive the respective pivot pins 14a, 13a of the spades 12, and lubricant passages extend through the rings from their respective grooves 1b, 2b to their pivot apertures 16, 15. Each spade 12 comprises a blade extending angularly from an integral fork 12a the limbs of which are holed and slotted at 13 and 14, Figs. 10 and 11, to engage the pivots 13a, 14a, and embrace the peripheries of the rings 1, 2 to locate the ring 2 axially on the ring 1. Each blade 12 has a studded groundengaging shoe 17 removably hinged thereto by a pin 12c, the shoe 17 being buffered to the blade 12 by a rubber block 18 and having a stop 20 thereon to engage an adjacent blade 12 when in the retracted position, Fig. 1, to locate the shoe 17 correctly in such position. The rings 1 and 2 are locked in their end or intermediate positions of blade adjustment by radial pins 29 spring urged in diametrically opposed bosses 30 on the ring 1 to enter recesses 32 in the ring 2. Withdrawal of each pin 29 is effected by movement of a lever 34 to rotate a cam 35, to which the pin 29 is pivoted and which bears on a cap 36 closing the boss 30, the cam having flats thereon corresponding to the locked and unlocked positions.
Patent GB-232389-A (GB)
Title: An improved tobacco pipe
IPC: A24F5/00
Filed: 1924-03-13
Abstract: 232,389. Leighton, H. March 13, 1924. Tobacco pipes. - The tobacco chamber a is triangular in vertical section, the smoke passage leading from a restricted orifice at the apex b. The bowl may be of ordinary external appearance or may be conical as shown. The upper portion c of the bowl may converge upwards.
Patent GB-754845-A (GB)
Title: Improvements in or relating to pteridines
Inventor: DUNSMUIR JAMES HENRY
IPC: C07D487/14
Filed: 1954-03-05
Abstract: The invention comprises 2,4-diamino-11-n-amyl-indols-(21,31-6,7) -pteridine and the preparation thereof by condensing 5-nitroso-2,4,6-triaminopyrimidine with an N-n-amyl-O-acyl-indoxyl in solution or suspension in a solvent in the presence of an acid binding condensing agent.  In an example 2,4-diamino-11-n - amyl - indolo - (21,31 - 6,7) - pteridine is prepared using N - n - amyl - O - acetyl - indoxyl for reaction with the substituted pyrimidine in the presence of piperidine as the condensing agent.  N - n - amyl - anthranilic acid is prepared by refluxing anthranilic acid, n-amyl iodide, potassium carbonate and water.  N - n - amyl - N - phenyl - glycine - 2 - carboxylic acid is prepared by refluxing N-n-amylanthranilic acid, monochloroacetic acid, sodium carbonate and water.  N - n - amyl - O - acetyl - indoxyl is prepared by refluxing N - n - amyl - N - phenyl - glycine-2-carboxylic acid, sodium acetate and acetic anhydride in the presence of a few drops of concentrated sulphuric acid.  Other N-n-amyl-O-acyl-indoxyls may be prepared by a similar method.
Patent GB-1430923-A (GB)
Title: Device for removing silage blocks from a silo
IPC: A01F25/20
Filed: 1974-02-13
Abstract: 1430923 Cutting silage H VON DER HEIDE 13 Feb 1974 [16 Feb 1973] 6628/74 Heading A4C Silage blocks are cut from a silo by a vertically reciprocable knife 20, Fig. 3, carried by a mechanism 16 operable by a hydraulic motor M, linkable to the hydraulics of a tractor, to move, in either direction, along a U-shaped gantry 15 cantilevered perpendicularly to an, in use, vertical frame 1, Fig. 1, having tines 11 projecting from a horizontal tube 3 below said gantry, said tube being rotatably mounted on struts 4, 5, 6, (7), Fig.2 (not shown) of said frame and being lockable to retain the lines horizontal by a pair of levers 12 engaging a pawl 13. A switch 17 is mounted at each end of the gantry to stop and reverse mechanism 16 for travel in the opposite direction. Teeth 19 are disposed on the gantry in the line of motion of mechanism 16, a pivotable and reversible double pawl of said mechanism engaging said teeth. Slidable bars 8, 9, 10 which can be mounted on the rear or on outriggers of a tractor, are attached respectively to a horizontal bar 2 at the top of the frame, and to struts 5 and 6.
Patent GB-646635-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C21/06
Filed: 1945-04-27
Abstract: 646,635. Reducing surface friction on aircraft. LOCKHEED AIRCRAFT CORPORATION. April 27, 1945, No. 6631/46. Convention date, March 6, 1942. Divided out of 646,632. [Class 4] In an aircraft having a jet power plant of the type comprising a gas turbine and compressor, a boundary layer removal slot in the wing is connected to an augmenter associated with the jet nozzle whereby boundary layer air may be removed through the slot by the action of the augmenter and mixed with combustion products issuing from the nozzle. The invention is shown as applied to an aircraft having propulsion plant as described in Specification 646,632, and in one form, Fig. 1, the nozzle N discharges into an augmenter 182 having a divergent portion 184 and a convergent portion 183 which communicates with an air intake duct 301 and through an annular duct 302 with a shroud 303 surrounding the power plant. This shroud is connected by lateral passages 304 in the wings to boundary layer removal slots 309-312, the flow of air induced by the jet being assisted by variable-pitch fans 305-308 driven from the power plant. In a second form, Figs. 4 and 5, the power plant is situated in the wing, and the augmenter 182 communicates through an annular duct surrounding the power plant with a transverse passage 403 to which air from boundary layer removal slots 377 and 379 is supplied by variable-pitch fans 395-397 driven from the power plant. The passage 403 also communicates with boundary layer discharge slots 410 and 412. In both forms, wing skin intercoolers 44 and 45 are provided through which air from the first stage compressor of the power plant is passed before being admitted to the second stage compressor. The drive for the fans is taken from a differential gear transmission connecting the gas turbine and compressor, and the pitch of the fans is varied by an automatic control system responsive to the pressure developed by the compressor as described in Specification 646,632. The mechanism for varying the pitch of the fan blades may be arranged in the fan hubs as described in U.S.A. Specification 2,294,350.
Patent GB-212937-A (GB)
Title: Apparatus for displaying a succession of pictures or the like
IPC: G09F11/02
Filed: 1924-03-14
Abstract: 212,937. Fedit, G. March 15, 1923, [Convention date]. Laths, reciprocating in unison.-A plurality of movable frames carry parallel overlapping strips bearing sections of different pictures, drawings, text, &c. The strips are attached at their ends to two opposite and parallel cross-pieces on each frame, which cross-pieces 3, 4; 8, 8<a>; 9, 9<a> lie all in one plane. The side bars 1, 2 of the frame 3, 4 carry transverse members 6, 7 which guide the side bars 10, 10<a>; 11, 11<a> of the other frames. The frame 3, 4 is stationary, and the frames 8, 8<a>; 9, 9<a> are reciprocated by a periodically driven cam 20 engaging pivoted levers 19, 18 having forked ends 21, 22 embracing pins 23, 24 on members 25, 26 fixed to the frames 8. 8<a>; 9, 9<a>. The frame 3, 4 is detachably mounted in a casing 14, and the frames 8, 8<a>; 9, 9<a> can be readily raised out of engagement with the driving mechanism for changing. Stops 15, 16 .17 limit and effect movements of the frames 8, 8<a> and 9, 9<a>.
Patent GB-1173691-A (GB)
Title: Aircraft Warning System.
IPC: G01W1/00
Filed: 1967-02-13
Abstract: 1,173,691. Detecting clear air turbulence. SPERRY RAND CORP. 13 Feb., 1967 [14 Feb., 1966], No. 6680/67. Heading B7W. [Also in Division H4] Warning of probable clear-air turbulence is given by measuring the mean air temperature in a conical field ahead of an aircraft (e.g. by a radiometer such as that described in Specification 1,121,638) and comparing it with the ambient temperature at the craft. To avoid error if the craft is flying along an isotherm the radiometer antenna is scanned to provide signals at -80, -45, -0, +45, +90 -degrees and the presence of signals above a certain level on both sides, with or without an ahead signal is used to indicate turbulence ahead. Signals from one side only operate " turn left " or " turn right " lamps. The indicator circuit is illustrated in block diagram form, Fig. 4 (not shown).