Abstract: A coating method and apparatus for coating the inner surface of a long tube of small diameter, specifically tubes for a condenser. The coating is a type of spray coating wherein a long flexible supply hose, longer than the long tube to be coated, is reciprocated in the long tube with a spray nozzle attached to the tip thereof for spraying the paint by the action of compressed air, from one end of the long tube to the other end thereof while spraying the paint in atomization. The long flexible supply hose of double structure or sometimes of triple structure is composed of a short heating pipe portion adjacent to the spray nozzle and a long flexible hose portion. The paint and compressed air supplied through separate passages in the supply hose are heated to a predetermined temperature by heating means, for example, a sheathed electrical heater wound about an inside pipe of the heating pipe portion upstream of where the paint is sprayed.

Abstract: A apparatus for applying a coating material to the inside seams of a series of can bodies which are moving along on can forming apparatus at high speeds. The apparatus comprises two spray guns mounted in tandem at the end of the can forming apparatus which are fired alternately so that each gun coats every other can body. The coating apparatus is designed so that coating material is only sprayed when a can body is above a spray nozzle so that errant coating material does not foul up the forming apparatus. The apparatus also provides for an adjustable nozzle on each gun so that each gun can be independently adjusted.

Abstract: An apparatus, used in the treatment of cans, is made up of a number of individual units, each of which essentially comprises a pair of drums that are mounted for rotation about parallel axes which are vertically disposed. One of the drums is used in the treatment of the interior of the cans, while the other is utilized in the treatment of the exterior of the cans. Each of the rotary drums is provided with means for holding a number of cans in circumferential alignment around the outer periphery of the drum such that the longitudinal axes of the cans are radially oriented relative to the rotational axes of the drums. Other means are provided to successively transfer the cans from one drum to another. A number of such units can be used, in tandem, to treat the cans beginning from washing, rinsing and drying of the cans to heating, coating and drying of the coated cans.

Abstract: This relates to a powder applicator for applying a coating stripe in powder form to inside seams of can bodies. The powder applicator is particularly adapted to be utilized in conjunction with welding apparatus for welding the side seams of can bodies and wherein the diameters of the can bodies are too small to permit the provision of the customary excess powder return duct. The powder applicator is located at the 12:00 o'clock position and thus the excess powder will not merely fall out of the applicator. Accordingly, there is provided a channel defined by a porous block having air or gas circulated therethrough and wherein the terminal end of the channel is closed by a deflector block which will deflect any excess powder out of the applicator into an overlying hood which is primarily intended to take away powder overspray which normally occurs between adjacent, but spaced, can bodies.

Abstract: A forward motion arresting means is added to a fluid powered lance to reduce the harmful effect of the stopping of the lance forward motion. A plug member mounted on the lance mates with a body member within the housing to prevent fluid flow and reduce the lance forward motion. Rearward motion arresting is achieved by the addition of a reservoir portion which acts as a hydraulic stop in conjunction with the lance piston.

Abstract: An improvement in a process for forming a refractory lining on the interior walls of the metallurgical vessel which interior walls are coaxial to the principal axis of the vessel wherein a refractory mass containing a binder is centrifugally slung onto the interior walls in a direction normal thereto while the vessel is at a standstill is disclosed. According to the invention, the refractory mass is initially shaped into balls prior to being centrifugally slung and the balls are centrifugally slung in rapid succession to form a mass jet. Also disclosed, is a device for so slinging a refractory mass on the walls of a vessel comprising a slinger head having a slinger wheel and a motor and at least one supply conduit for supplying refractory mass to be slung. The slinger wheel of the slinger head is disposed on one end of a shaft which shaft is extendable into a vessel, the slinger wheel being connected to an actuatable by a slinger motor.

Abstract: A container wherein exposed surfaces thereof which are particularly subjected to a chemical reaction, such as corrosion, are protected by the application of a thixotropic lacquer. A typical installation is the application of a band of thixotropic lacquer internally of the container along the longitudinal side seam. A thixotropic lacquer has the characteristic that there is very little flow after its application to a surface, and thus is particularly adapted for covering raw edges and like exposed areas of containers. The thixotropic lacquer is applied preferably in plural closely adjacent streams which unite after the lacquer engages the container surface. Beneficial results are obtained by adjusting the temperature of the container and/or lacquer, and further by heating the applied band of lacquer.

Abstract: Water mains, water pipes of housing-development apartments or water pipes of factories can be lined by this method. At first epoxy resin solutions A and B are mixed. The epoxy resin paint is atomized by a rapid air stream. The gaseous mixture is still accelerated by another air stream and blown into a pipe to be lined. The mixture fluid adheres to the inner surface of the pipe and forms a lining layer from the inlet to the outlet of the pipe in succession. When the lining process finishes, the supply of epoxy resin paint is stopped but the air is still blown in to dry the paint quickly for a short time. The residual paint exhausted from the outlet is withdrawn and revived to liquid. This method is useful for the pipes with a diameter larger than 1/4 inch.

Abstract: In apparatus for applying, by flood coating, a layer of a corrosion-inhibiting material to internal surface regions of cavities in a metal structure via passages communicating with the cavities, which apparatus includes at least one conduit having an outlet end arranged to communicate with one such passage for feeding corrosion-inhibiting material through that passage and into a cavity communicating therewith, the conduit is constituted in the region of its outlet end, by a main conduit portion extending upwardly at an angle to the vertical and arranged to convey material from a supply tank, and a pipe section which is open at both ends and is oriented with its longitudinal axis substantially vertical, the main conduit portion being connected to the pipe section at a point intermediate its ends for conveying material in an upward direction into the pipe section, the upper end of the pipe section constituting the outlet end of the conduit, and the lower end of the pipe section constituting a drain opening via

Abstract: A hand-operated apparatus for applying a gasketing composition on a part comprising the improvement where there are template means, with a track means beneath the base on which the part is located in which in the track means there moves a roller means which is connected to a movable arm means to which said movable means there is also connected dispensing mean for dispensing the gasketing composition. With such means, the amount of composition that is applied to the part to form a gasket as well as the path of the travel of the dispensing means as well as the height of the dispensing means from the part so as to determine the thickness of the gasket is fixed by the machine, the operator only guiding the starting, the stopping, and the dispensing of the composition.

Abstract: A process for applying a coating of plastic material to a metal tube of finite length having a pretreated surface by applying plastic coating materials on the metal tube in a direction horizontal and perpendicular to its direction of travel, the process being characterized by the following sequence of steps:(a) heating a fixed metal tube to a temperature above the melting point of the plastic material to be employed;(b) causing a mixture of plastic powder and air to pass through the metal tube whereby the plastic material is fritted onto the inside surface of the tube;(c) thereafter rotating the metal tube and applying to the exterior surface thereof in a plurality of stages a plastic material, said plastic material being electrostatically sprayed onto the rotating metal tube; and(d) after each stage of electrostatically applying plastic to the outside surface of the metal tube and applying plastic material to the inside surface thereof, completely melting and smoothing the plastic material.

Abstract: A coating spraying system is shown for use in spraying the internal surfaces of a hollow container. The system includes a spinning element for dispersion of the coating and a specifically configured metering orifice for preshaping the mass of the coating radially disbursed by the spinning head.

Abstract: Apparatus for cleaning the wheel arches of vehicles comprises a carrier, pivotally mounted about a substantially horizontal axis, on support means, a spraying unit slidably mounted on the carrier and movable substantially inwards and outwards relative to the pivotal axis of the carrier, means for moving the support means whereby the spraying unit is brought into a position alongside a wheel for spraying with the pivotal axis of the carrier adjacent to and substantially parallel with the axis of the wheel, means for moving said spraying unit inwards and/or outwards in relation to said pivotal axis of said carrier and means for pivoting the carrier about the pivotal axis relative to said support means.

Abstract: An apparatus for applying sealant to a selected area of a container.The apparatus includes means for conveying a container into and away from a sealant applying station. Sealant dispensing means is positioned adjacent the conveying means at the sealing station and is operable for dispensing sealant onto a selected area of the container. Means is provided adjacent the sealant dispensing means for selectively removing any excess sealant from a nozzle portion of the sealant dispensing means.

Abstract: Disclosed is a device for guniting the lining of casting ladles, comprising a platform which is mounted by means of adjustable supports on the ladle to be repaired. On the under side of the platform a guide is mounted so as to extend downward from the platform into the casting ladle. A carriage with a nozzle for supplying gunite onto the surface being repaired is mounted for reciprocating motion along the guide. The guide is fitted on sleds which, in turn, are set on a swivel table so as to permit radial displacement of the sleds relative to the axis of rotation of the swivel table, the swivel table being rotatably mounted on the platform. On the under side of the platform there is also arranged a detachable templet whose curvature is similar to the curvature of the horizontal cross-section of the ladle. A roller pair is mounted on the templet to run around it.

Abstract: A method for applying a rust-protecting agent in straight as well as curved hollow spaces by means of spraying, either with air or airless, utilizes a flexible hose provided at its front end with a nozzle arranged to provide a radially directed circular spray field. The hose is introduced in the space to be treated and a rust protecting agent is introduced through said hose and the nozzle under such a pressure that the front end of the hose carrying the nozzle partly raises from the inner surface of the space. The hose is withdrawn through all the space.

Abstract: An improved apparatus for cleaning large tanks or vessels, such as automotive and railway tank cars. A tiltable frame having a wash nozzle assembly pivotedly mounted thereon is pivotedly mounted above a fixed support frame. The tiltable frame has, fixedly mounted thereon, an air motor which is operatively connected to a first gear box which, in turn, is operatively connected to a second gear box. The first gear box is operatively connected to the wash nozzle assembly to move said assembly back and forth along the longitudinal axis of the tank or vessel to be cleaned. The second gear box is operatively connected to the fixed support frame to tilt the tiltable frame and thereby move the wash nozzle in both directions along the latitudinal axis of the tank or vessel to be cleaned.

Abstract: A coating spraying system is shown for use in spraying the internal surfaces of a hollow container. The system includes a spinning element for dispersion of the coating and a specifically configured metering orifice for preshaping the mass of the coating radially disbursed by the spinning head.

Abstract: An apparatus for applying a sealant or the like to a selected area of a container. The apparatus includes a nozzle for dispensing the sealant onto the selected area of the container. The nozzle includes a first portion which is adapted for mounting the nozzle to a source of sealant. The nozzle also includes a second portion which has a free end with a discharge opening onto the exterior surface of the free end. A first flow passage communicates with a source of sealant and provides flow communication between the source and the discharge passage having the discharge opening. The discharge passage is elongate having a width greater than the height of the passage.

Abstract: Automatic and reproducible spraying of liquid materials on complex tool surfaces is attained through a multinozzle spraying block, traversed by supply passages for the spray material and the air for spraying, and comprising, on at least one of its faces, a series of valves provided with elastic obturating membranes and with pneumatic logic control, programming and communication of the spray material supply passages with the spray air outlets of the nozzles grouped on at least one of the block faces. Application of the multinozzle spraying block to automatic treatment is achieved by spraying materials on tool surfaces under constant conditions on repetitive-cycle machines.

Abstract: A method of cleaning and renewing sections of pipe is disclosed wherein the flow of fluid through the pipe is shut off and a scrubbing element is inserted into one end of the pipe. The scrubbing element is advanced through the pipe while at the same time ejecting a cleaning fluid to clean the inside of the pipe section. The inner surface of the section is then scraped to remove materials adhering to the inside of the section which were not previously removed. The removed materials are then flushed from the inside of the section and the section is dried. The inside of the section is then painted by passing a painting device through the section which applies a mixture of paint and hardening liquid to the inside of the pipe. A device is also disclosed for coating the inner surface of a pipe which comprises a casing, an air motor and a cowling operatively connected to the motor for scattering coating liquid fed to the device.

Abstract: A powder applicator for applying powder to form a side stripe to the interior of can bodies along side seams thereof. The powder applicator includes a device for providing a layering effect on the gas entrained powder so that although the powder is normally carried by the gaseous stream it is directed into an orifice of a nozzle as a dense stream with the carrier gas forming a separate layer. In addition, the applicator forms a seal with the interior of the can body to define a limited sealed area within which the powder may pass. This sealed area contains corona charging pins which are arranged in a longitudinal line so that a maximum charging of the powder may be effected. Also, a diffused gas is directed into the sealed area to prevent the powder from clinging to the side walls of the sealed area and the charging pins.

Abstract: A powder system for electrostatically applying a powder coating to a can body side seam area. The system incorporates a catcher which is positioned and is of a configuration to catch and return substantially all of the powder overspray and stray powder particles. A constant vacuum is maintained in the catcher by way of a vacuum flow transducer.

Abstract: Tanks for seagoing tankers for transporting liquefied natural gas or liquefied methone are basically prismatic, wherein the corners between intersecting walls are rounded off so that in such tanks adjacent flat wall parts are interconnected by a curved wall part. The invention relates to an apparatus and a method for mechanically treating the inner surfaces of the walls of such a tank, wherein the apparatus is so constructed that it is able to displace a treating tool along the flat wall parts and along the curved wall parts in such a manner that these wall parts are treated in a similar manner so that the quality of the treatment will be the same for all the various wall parts. The apparatus is particularly useful for spraying an insulating material, for example a polyurethane foam, onto the inner surface of the walls of such a tank.

Abstract: A pair of spinning nozzles for applying plastics sealant to a pair of openings in a can end such as a carbonated beverage or beer can end. The spinning nozzle has an annular opening, a circle of round openings, or a circle of small surgical steel pipes sized to be on the order of a hypodermic needle for delivering the adhesive in an upward direction against the bottom of an overlying can end. A shroud is provided to confine excessive adhesive, and a screen or field of vacuum-applying holes are positioned within the shroud and around the nozzles to suck excess adhesive back into a reservoir. A heater is used to keep the plastics soft and flowing.

Abstract: An apparatus is provided for hard facing by powder flame spraying of inner surfaces of bores of relatively large workpieces difficult to mount rotatably, such as Diesel engine blocks, and the like. The apparatus comprises a stand, a carriage support pivotally and mounted to the stand via a holding mechanism coupled to the stand and adapted to be adjustably inclined and to move vertically between a pair of supporting columns of the stand. A carriage is mounted on the carriage support and has a burner assembly mounted to and extending transversely from the carriage, the burner assembly comprising a burner mounting having a longitudinal member extending therefrom through which powder flame spray material is fed, the member terminating into a nozzle disposed transverse to the longitudinal axis of the longitudinal member. The carriage is slidably mounted on the carriage support and has a mechanism associated therewith for sliding the carriage along the axis of the longitudinal member.

Abstract: A sprayer for repairing a refractory lining comprising a vertical, axially movable and rotatable nozzle pipe; a stationary housing disposed about a portion of the pipe; a pair of parallel, connected turntables rotatably supported within the housing axial with and through which the pipe freely passes; motor-driven wheels mounted on the undersides of the turntables for supporting the pipe and driving it in either axial direction relative to the housing; and the combination of a first gear mounted on the upperside of one turntable coaxial with and through which the pipe freely passes intermeshed with a second, motor-driven gear mounted on the housing for rotating the pipe together with the wheels.

Abstract: The inside surfaces of longitudinal seams on can bodies are sprayed with a coating by moving the can bodies longitudinally along an arm with the seams spaced vertically above the arm. An air spray nozzle mounted on the arm is positioned for air spraying a coating material vertically upwardly against the inside surfaces of the longitudinal seams as the can bodies move past the nozzle.

Abstract: Drive unit for internal pipeline equipment, wherein the drive motor which drives the drive unit is disposed parallel to the pipe axis instead of transverse to the pipe axis, thereby to occupy a reduced space transverse to the length of the pipe and enabling a drive motor of given size to be used in a drive unit of smaller diameter than would be possible if the drive motor were disposed transverse to the pipe axis. In this way, drive units may be adapted for use in pipes of relatively smaller diameters than has heretofore been possible.

Abstract: Forming electric field in and out of the vertical overlap portion, bottom peripheral joint portion and top peripheral rolled portion of a paper cup made of paper or like material lined with a laminate, supplying charged powder particles in the space of said formed electric field to effect powder coating on said portions and with subsequent heat treatment, sealing layers are formed on said portions to become water tight; providing outside electrodes at the outside of said vertical overlap portion and folded portions and providing opposed electrodes in the inside of the paper container, providing a powder supplying means for blowing powder to said sealed portions and masking means for masking the portions not powder coated to securely seal said vertical overlap portion and folded portions.

Abstract: Apparatus for application of a coat of coating material to hollow articles provided with at least one internal partition to divide the interior of said items into an entry and an exit portions having an inlet and an outlet openings, repsectively. The coat application unit has at least two sprayer heads each of which has a configuration corresponding to the shape of the area to be coated and is adapted to be passed though the inlet and the outlet openings into the entry and exit portions, respectively. One of the sprayers may be carried by a bracket arm which is locked-in with a tipper device and is provided with a retainer adapted to keep the article in position after the abovesaid sprayer has been fitted into the item under process for a conjoint turning of the item and the tipper to remove surplus coating material.

Abstract: A spray head with nozzles is carried on a lance to spray high pressure fluid, such as water, to clean the interior of tubes, such as those in heat exchangers. The fluid, in addition to cleaning the interior of the tube, is used to both rotate the lance and move the lance into and out of the tube.

Abstract: In an apparatus of this invention which applies refractory material in either wet or dry form onto the inner surface of a furnace, the improvement is characterized in that all the devices inevitable for the lining operation including an operator's seat are effectively mounted on the transport car thereof which can be steered readily in any direction around the furnace.Due to the above construction, the lining apparatus of this invention can conduct the spraying operation with great mobility and reliability.

Abstract: Apparatus for repairing electric furnaces, ladles or the like while they are hot and which includes a centrifugal slinging machine that can be lowered into the hot furnace. The machine includes a centrifuging wheel which can deliver lining repair material radially outwardly and against the interior wall of the furnace. The centrifugal delivery portion of the machine can be selectively divided into sectors so that repair material can be selectively dispersed only against that portion of the interior furnace wall that needs repair or alternatively, the machine can deliver material to the entire circumference of the interior of the furnace. The machine has adjustable sliders which are provided around the circumference of the machine to selectively distribute the material around the interior of the furnace and the sliders are infinitely variable in their adjustment, and radial director vanes act in cooperation with the sliders.

Abstract: A spraying device for applying, through an injection opening, a coating material such as anticorrosion oil onto the inner walls of a hollow body, comprising a spray gun provided with an atomizing nozzle and an interchangeable front piece connected down stream thereof. The front piece comprises an ejector barrel for introduction through said injection opening and a positioning collar rigidly attached thereto, the positioning collar. The latter being adapted to define the position of the ejector barrel during spraying. A control unit connected to the spray gun comprises means for determining the duration of each spray operation from the very moment the trigger of the spray gun is pulled.

Abstract: A method and apparatus for correcting imbalance occurring in pneumatic tires during their manufacture. Correction is made by depositing on the inside surface of the tire, at a balance-correcting position, a measured quantity of an uncured, quick-curing, urethane or other liquid elastomer composition which bonds to such surface when cured, and curing the composition in place against the surface. The surface is cleaned in advance, as by washing, scrubbing, and/or abrading, to remove mold release agents and the like and to expose the bare rubber of the tire wall for bonding. The elastomer is desirably deposited in a pool, but may be dispensed in a stream of air or other gas directed toward the deposit. The air reduces the thickness of the pool and feathers its edges and thereby reduces the discontinuity between the deposited material and the tire surface, and promotes bonding.

Abstract: A gunning apparatus for repairing a furnace lining is provided with a spray pipe of non-circular hollow cross-section. The spray pipe of non-circular cross section slidably moves back and forth within a rocking sleeve by a slide mechanism while the spray pipe is non-rotatable relative to the slide mechanism and is rotatable only by the rotation of the slide mechanism, whereby the shooting pipe is manipulated without weakening the rigidity or strength thereof which usually occurs on a conventional circular shooting pipe which requires keyways for rotation thereof.

Abstract: Apparatus for powder coating the inside of can bodies, either along a strip or completely, comprises a spray head having an inlet opening fed through a gun with a powder-air mixture and an exit opening located so as to deliver the powder-air stream transversely to the gun axis onto the can body. The exit opening is either a slot-type nozzle for applying a strip, or an annular opening for a complete coating of the can. So as to apply the coating in a precisely limited form without rebound, insert baffles in the form of rods are fixed in the spray head passage which expands between the entry and exit openings to slow down, distribute and orient the powder-air stream towards the exit opening. A deflector wall is located at the end of the passage to deflect the powder-air stream towards the exit opening.

Abstract: The interior of a pipe is coated with a uniform thickness of plastic. A fluidized bed of heat-meltable plastic material in particular form is connected to the inlet end of the pipe, while the opposed end of the pipe is made attachable to a source of reduced pressure. A source of compressible fluid is also connected to the inlet end of the pipe. The pipe is preheated and then rotated axially while the compressible fluid flows therethrough. The compressible fluid flowing to the inlet is suddenly terminated while a flow from the fluidized bed is immediately established so that the vacuum at the outlet end of the pipe causes uninterrupted mass flow and pulls a finite pocket of the finely divided plastic into the pipe. The flow of particular plastic material is terminated, while the flow of compressed gas is immediately re-established, thereby pushing the pocket of plastic material into and through the pipe.

Abstract: The lining of a furnace is automaticlly repaired by use of a movable transport car on which a vertically disposed spray pipe is capable of being vertically displaced along its longitudinal axis and of being rotated about its longitudinal axis. The transport car is moved to a position underlying a furnace, and the spray pipe is elevated into the furnace to thereby dispose a spray nozzle on the end of the spray pipe within the furnace. The spray nozzle is directed to spray refractory material onto the abraded, eroded, and spalled areas of the refractory lining within the furnace.

Abstract: Methods and apparatus for coating the interior side seam of can bodies. The can bodies proceed down a line in serial order with end toward end and uniformly spaced from each other down the line extending from a can body side seaming machine. An airless spray coating is shot into each can body from the front and the rear to leave a coating of plastic along the interior side seam of a soldered can body.

Abstract: A method of applying a longitudinally extending coating of a reflecting or luminescent material in a tubular lamp by means of a nozzle which travels along the longitudinal axis of the lamp envelope. A plurality of spraying jets are so disposed that the suspension or solution, lands on a portion of the envelope immediately adjacent to the slot to be formed.

Abstract: Apparatus and process for applying locking patches of resilient, heat softenable resin to internally threaded articles having openings at both ends, in which the threaded portions of the articles, heated to a temperature above the softening point of the resin to be applied, are moved on a conveyor as a uniform succession at a uniform continuous speed in a path for application of particles of the resin with the openings at the ends of the articles substantially uncovered, a stream of resin particles entrained in a gaseous jet is directed by a resin particle stream guide through the openings in successive moving articles against threaded areas of the articles where the particles adhere and melt to form locking patches, flow of the gaseous jet is controlled relative to movement of a repeating feature of the articles on the conveyor to supply the stream of resin particles when the stream guide is in, and to interrupt the stream of particles when it is out of particle applying relation to the articles, and a sucti

Abstract: A coating liquid is squirted through a needle control nozzle directed into open end of internal threads of a fitting or tube and is deflected radially to form a spray cone by an air jet from a revolving nozzle set slightly in front and off the axis of the nozzle for the coating liquid. An end plate affixed to the revolving nozzle limits the forward spread of the spray cone, so that the coating thickness taper is cut off at the inner end of the coating on the threads. The thickness taper produced at the outer end of the threads by the spray cone favors easy engagement of the threads in making a tight threaded joint.

Abstract: A layer of plastics material is applied to at least one selected surface of a metal article by a method in which the article is heated and positioned in such a way that the selected surface or surfaces is or are lowermost; a table having an upper surface or surfaces carrying a layer of powdered plastics material, said carrier surface or surfaces of the table being of a shape and area such that the surface or surfaces will wholly underlie the selected surface or surfaces of the article, is raised upwardly beneath the article to urge said carrier surface or surfaces against the overlying selected surface or surfaces and so transfer powder from the carrier surface or surfaces to the selected surface or surfaces; and the powdered material adhering to the selected surface or surfaces is permitted or caused to coalesce and form a plastics layer on the or each surface.

Abstract: Apparatus for cleaning a selected surface portion of the interior liner of a tire includes a frame; three cooperative fingers adapted to be spread apart to engage the beads of a tire and to spread such beads proximate the portion of the liner to be cleaned; a brush; actuators arranged to move the brush into engagement with the liner portion; a rotary actuator arranged to spray solvent on to the liner portion; and a drain insertable into the tire to withdraw dirty solvent therefrom.

Abstract: Disclosed is a valve that has a torpedo shaped valving member in the middle of an enlarged passageway. The valving member contains an elastomeric sleeve that expands outwardly from a hinged area when compressed to form a line seal with the passageway. The valve is in the form of a multiple valve-feeding, bypass and venting valving units all in one dielectric casting. Means are also shown for connecting cans to the valve and for electrically charging powder. A method for valving and the diaphragm's details are also disclosed.

Abstract: Methods and apparatus for coating the interior side seam of can bodies. The can bodies proceed down a line in serial order with end toward end and uniformly spaced from each other down the line extending from a can body side seaming machine. An airless spray coating is shot into each can body from the front and the rear to leave a coating of plastic along the interior side seam of a soldered can body.

Abstract: This invention relates to a method for coating inner faces of metal pipes of a small diameter which comprises feeding a stream of a powdery resin at a rate of 2 to 10 m/sec into a metal pipe of a small diameter preheated at a temperature higher by 20.degree. to 70.degree.C. than the melting or softening point of said powdery resin so that the concentration of said powdery resin or a mixture of said powdery resin and a carrier is 5 to 40% by volume.

Abstract: A method for coating the inner surface of a metal pipe having an inner diameter of about 1 to 15 cm, which comprises feeding from one end of said metal pipe dry particles of a coating composition into the interior of the metal pipe preheated at a temperature of from a softening point of said coating composition to below a melting point thereof, sucking air at the same time from the other end of the metal pipe so as to form an air stream carrying the particles and flowing in the interior of the pipe at a flow rate of about 4 to 20 m/sec and to allow the particles to deposit on the inner surface of the pipe, and fusing the deposited particles at a reduced pressure of 10 to about 100 mm Hg to form a continuous film on the inner surface of the pipe.