US2016060A

US2016060A - Apparatus for coating

Info

Publication number: US2016060A
Application number: US712816A
Authority: US
Inventors: Clauss B Strauch
Original assignee: Stokes Machine Co
Current assignee: FJ Stokes Machine Co
Priority date: 1934-02-24
Filing date: 1934-02-24
Publication date: 1935-10-01
Anticipated expiration: 1952-10-01

Description

Oct. 1,1935. I C a STRAUH 2,016,060

' I APPARATUS FOR COATING Filed Feb. 24,1934 2 Sheets-Sheet 1 Oct. 1, 1935. QB. STRAUCH APPARATUS FOR COATING 2 Shets-Sheet 2 Filed Feb. 24, 1934 fi t: 4

Patented Oct. 1, 1935 PATENT OFFICE 2,016,060 APPARATUS FOR coA'rmo Clause B. Strauch, New York, N. Y., assignor, by mcsne assignments, to F. J. Stokes Machine Company, Philadelphia, Pa.

Application February 24, 1934, Serial No. ll2,816

13 Claims.

This invention relates to a method and apparatus for coating the inner surfaces of collapsible tubes or the like with liquefied hot petrolatum or similar substances.

An object of the invention is to provide a novel system whereby a single operator in about one minutes time may coat the interior of a gross or more of tubes.

Another object is to provide a system for coating the tubes with a pliable adherent sealing rnaterial which will not evaporate, requires no previous treatment of the tubes, no solvents or drying, does not clog the tube outlet, protects the contents from cork and other acids, as well as alkalis and costs only about one-thirtieth that of other materials.

With the foregoing objects outlined and with other objects in view'which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

Fig. l is a vertical sectional view of a preferred form of the apparatus.

Fig. 2 is an enlarged vertical sectional view of one of the tubes and showing means for coating the interior of the same through device intro duced through. the top of the tube, which device plugs the lower end of the tube during the filling operation and provides for overflow of coating material. I

Fig. 3 is a similar view but showing the tube slightly lower relative to the filling device to permit discharge of the coating materal through the lower end of the tube.

Fig. 4 is a vertical sectional view on the line 3- 1 of Fig. 2.

Fig. 5 is a sectional view or" a modification in which the coating material is introduced through the bottom of the tube rather than through its upper end.

Fig. 6 is a view similar to Fig. 5 but showing means to permit overflow when bottom iilling device is used.

able means such as a plate it which slides on the bottom of the tank and is provided with ports l5 corresponding in number to the spouts. The plate may be moved by any suitable means. For instance, the operator may manipulate the same 5 by a handle it that is pivotally mounted at ll and is connected at it to the plate.

The spouts feed the coating material into pipes l9, corresponding in number to the spouts, and depending from a stationary shelf 26 that is supl0 ported in the casing. Each of these pipes is provided at its lower end with a stopper 2!] having an inverted cone-shaped lower end 22. Near the. stopper each pipe has one or more ports 23 to allow the discharge or the coating material.

is tray Ed has ports 25 corresponding in number to the pipes and. is designed to support empty collapsible tubes 26. The tray carries a depending funnel 2'5 and it is designed to be raised and lowered so as to bring the tubes 2% into such po- 20 sition that the stoppers ti close the lower ends or" the tubes. Io permit elevating and lowering of the tray and funnel, they may be suspended on ropes it" which pass over pulleys fit that are rotatable on rigidly supported by the 25 casing. Weights ill carried by the ropes will function to raise the tray and to hold the same in elevated position. in this form. of the inven tion each pipe is is provided with an overflow conduit that communicates with a passageway so 33 extending through. the plug 2 i. whereby during the filling operation excess coating material will overflow into the funnel and will thereby be prevented from flowing over the upper edge oi the tube it with which the stopper is associated. 35

Hot material discharged from the tubes passes from the funnel into a sump 3d and is fed from the same by a pump 35, through a filter 3t and a pipe Sl bacli into the supply tank ill.

As petrolatiun congeals at normal temperatures, means are provided to maintain the same in fluid condition. This may take the form or" a plurality of burners 3t and 39 arranged at the lower end of the casing for heating the sump and pump. Gases from these burners will flew up wardly as indicated by the arrows and some of them will be directed by a baiile it toward the tubes as and pipes 519.

In operation, let us assume that a gross of the tubes '26 is arranged in the original box. If the bottom of the box is cut of? and the tubes are placed on the elevator 2i while the latter is in' lowered position, the spouts ll of the tubes will enter the apertures 25 of the plate 24. Then the operator can raise the elevator to cause the plugs 55 or stoppers 2| to close the lower ends of the tubes and the weights 3! will hold the elevator in raised position. Now the handle l5 can be manipulated to feed the fluid petrolatum through l5, l3, l9 and 23 into the tubes 26. Should the operator release too much coating material from the tank 12, the excess amount will overflow through 32 and 33. When the tubes have been filled to the desired height, the valve plate M is moved to closed position and then the elevator is lowered so that the coating material is discharged through the spouts of the tubes into the funnel 21 as indicated in Figs. 1 and 3.

After the tubes have been emptied, of course,

the operation may be repeated.

In the modification illustrated in Figs. 5 and 6, the tubes are filled from below and this may be accomplished by extending the pipes 59a through the elevator plate 24a so that the plate may slide up and down on the pipes. Each pipe will have a U-shape lower end lllb terminating in a hollow plug 21a adapted to close the lower end of the tube 26a. Obviously, when coating material is passed through the pipe Mia it can be used to fill the tube to a desired height, and then the elevator will be raised so that the coating material will flow out of the lower end of the tube.

In this form of the invention, overflow may be taken care of by an upstanding conduit 32a which rises from the plug 2 la. A passageway 33a in the plug provides for discharge from the overflow tube and a passageway 23a permits the material to flow from the pipe I911 into the tube.

This coating system is especially adapted for coating with liquefied hot petrolatum which will protect the metal surfaces of the collapsible tubes and allow a small amount of coating material to remain in the threaded end of each tube coated. This is particularly important in connection with dual tubes as it effectually prevents the contents of one tube coming in contact with the contents of the other tube prior to the same being expelled at the time of use.

Heretofore such tubes have been coated by spraying a single tube at a time and the spraying process is only applicable to large tubes. Fur

thermore, the spraying process makes double spraying necessary as a single coat will not suffice. Moreover, as no lacquer has been satisfactory in spraying, such system has been abandoned as unsatisfactory.

There is another system known as the vertical lacquer gusher with high pressure. This coats only a single tube at a time and the tubes have to be turned about four times during drying to avoid formation of a ring. As no lacquer or varnish in the vertical lacquer gusher system withstands alkali, this system is unsatisfactory.

In the first portion of this specification, I have set forth the advantages of the invention over the known systems and while I have disclosed what I consider to be some preferred embodiments of the invention in such manner that the same may be readily understood by those skilled in the art, it is manifest that changes may be made in the details disclosed without departing from the spirit of the invention as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

1. An apparatus for coating collapsible tubes or the like comprising a supply tank, means for feeding coating material from-the supply tank and terminating in a plug, a tube support movable up and down relatively to said plug and adapted to support a collapsible tube with its spout end downwardly while the plug is closing the lower end of the tube, and means for controlling the flow of the coating material through said means into the tube.

2. An apparatus for coating collapsible tubes or the like comprising a supply tank, means for feeding coating material from the supply tank and terminating in a plug, a tube support movable up and down relatively to said plug and adapted to support a collapsible tube with its spout end downwardly while the plug is closing the lower end of the tube, and means for controlling the flow of the coating material through said means into the tube, said plug having a conical face adapted to impinge against an annular internal surface of the tube.

15 3. An apparatus for coating collapsible tubes or the like comprising a supply tank, means for feeding coating material from the supply tank and. terminating in a plug, a tube support movable up and down relatively to said plug and adapted to support a collapsible tube with its spout end downwardly while the plug is closing the lower end of the tube, means for controlling the flow of the coating material through said means into the tube, and means for preventing coating material rising in the tube beyond a predetermined height,

4. An apparatus for coating collapsible tubes or the, like comprising a supply tank, means for feeding coating material from the supply tank and terminating in a plug, a tube support movable up and down relatively to said plug and adapted to support a collapsible tube with its spout end downwardly while the plug is closing the lower end of the tube, means for controlling the flow of the coating material through said means into the tube, a sump to receive coating material discharged from the tube, and means for transferring coating material from the sump to the supply tank. 4

5. An apparatus for coating collapsible tubes or the like comprising a supply tank, means for feeding coating material from the supply tank and terminating in a plug, a tube support movable up and down relatively to said plug and adapted to support a collapsible tube with its spout end downwardly while the plug is closing the lower end of the tube, means for controlling the flow of the coating material through said means into the tube, a sump to receive material discharged from the tube, means including a. pump for forcing the coating material from the sump to the supply tank, and means for heating the sump, pump and supply tank.

6. An apparatus for coating the interior of col- 0 lapsible tubes or the like comprising a supply tank, means including a depending pipe for feeding coating material from the tank to a tube, a plug carried by the pipe, an elevator adapted to support a collapsible tube in inverted position while the plug closes the lower end of the latter, means for placing the interior of the pipe in communication with the interior of the tube, and means for regulating the coating material fed through the pipe into the tube.

65 '7. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank, means including a depending pipe for feeding coating material from the tank to a tube, a plug carried by the pipe, an elevator adapted to support a collapsible tube in inverted position while the plug closes the lower end of the latter, means for placing the interior of the pipe in communicationwith the interior of the tube, means for regulating the coating material fed through 75 the pipe into the tube, and an overflow conduit associated with the pipe and discharging through said plug.

8. An apparatus for coating the interior of collapsible tubes or thelike comprising a supply tank for coating material, means for feeding the coating material from the tank into a collapsible tube, said means terminating in a hollow plug, an elevator adapted to support a collapsible tube in an inverted position, while the plug closes at the lower end of the tube and coating material is fed through the plug into the tube, and means for regulating the amount of coating material fed from the supply tank.

9. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank for coating material, means for feeding the coating material from the tank into a collapsible tube, said means terminating in a hollow plug, an elevator adapted to support a collapsible tube in inverted position while the plug closes the lower end of the tube and coating material is fed through the plug into the tube, means for regulating the amount of coating material fed through the plug, and means for preventing coating material rising in the tube beyond a predetermined height.

10. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank having a plurality of depending spouts, means for controlling the flow of coating material from the supply tank through the spouts, pipes associated with the spouts for feeding the coating material downwardly, plugs carried by the pipes, an elevator adapted to support a plurality of the collapsible tubes while such plugs close the spout ends of the tubes, means for feeding the material from the pipes into the tubes for filling the latter to a predetermined height, and a sump to receive coating material flowing from the tubes when the elevator is moved to unplug the tubes.

11. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank having a plurality of depending spouts, means for controlling theflow of coating material from the supply tank through the spouts, pipes associated with the spouts for feeding the coating material downwardly, plugs carried by the pipes, an elevator adapted to support a plurality of the collapsible tubes while said plugs close the spout ends of the tubes, means for feeding the material from the pipes into the tubes for filling the latter to a predetermined height, a sump to receive coating material flowing from the tubes when the elevator is moved to unplug the tubes, and means for feeding the coating material from the sump to the supply tank.

12. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank having a plurality of depending spouts, means for controlling the flow of coating material from the supply tank through the spouts, pipes associated with the spouts for feeding the coating material downwardly, plugs carried by the pipes, an elevator adapted to support a plurality of the collapsible tubes while said plugs close the spout ends of the tubes, means for feeding the material from the pipes into the tubes for filling the latter to a predetermined height, a sump to receive coating material flowing from the tubes when the elevator is moved to unplug the tubes, means for feeding the coating material from the sump to the supply tank, a casing in which the supply tank, spouts, pipes, elevator, sump and last mentioned,

means are arranged, and means for heating the interior of the casing.

13. An apparatus for coating the interior of collapsible tubes or the like comprising a supply tank having a plurality of depending spouts, a device for controlling the flow of coating material from the supply tank through the spouts, means including pipes associated with the spouts for feeding the coating material, plugs carried by the pipes, elevator means adapted to support a plurality of collapsible tubes while said plugs close the spout ends of the tubes, passageways for feeding the coating material from the pipes into the tubes for filling the latter to a predetermined height, and a sump to receive coating material flowing from the tubes when one of said means is moved relatively to the other one of said means to unplug the tubes.

CLAUSS B. S'I'RAUCH.