US1124858A - Apparatus for coating articles. - Google Patents

Description

L. GARUSO & S. MORICI.

APPARATUS FOR COATING ARTICLES.

APPLICATION FILED SEPT. 16. 1913.

1,124,858, Patented Jan.12,1915.

2 SHEETS-SHEET 1.

L. GARUSO & S. MORICI.

APPARATUS FOR COATING ARTICLES.

APPLICATION FILED SEPT.16, 1913.

1,124,858, Patented Jan.12, 1915.

2 SHEETS-SHEET 2.

c Q 0 Q a o a o o o a o a Q o o o' O 0 0 o O o a o O O o o o o o O O O O O O O O O O 0 O O O O O O O O 9' O O O O O O O O 0 O O O O O O O O O O OOOOOOOOOOOOOOOOO co co BEOPQLD'CKRUSO ANDSAI'VADOBE MOBICI, 0F GHIGAGO, LWOIS;

I APPARATUS: F03 COATING ser ous.

speelfloatlon of Letters Patent.

Patented Jam-12 1915.

Applleati'onflled September 16,1913. Salami-0.791021;

To all whom it may concern:

Be i'tkn'o'wn that we; Lnoronn-Cmuso and SALVATORE Momcr, subjects of the King"- of Italy, and. residents of Chicago; in the county of Cook and Stateof Illinois, have invented certain new and useful-Improvements in A paratus for Coatin'gArticles, of which the ollovvin is a full, c ear, and exact description, re erence being had to" the drawin annexed hereto.

@ur lnvention relates generally toapparatus for coating artieles ;'and more particularly to machines of'that class which are designed-to direct a 'lacqu'er' spray to blanks, such as telephone" parts, as they pass through the spraying zone or field. 7

One of the objects of our invention is the rovision of novel means in an apparatus of this charaeter adapted to impmrt'a'step by step or intermittent rotation 'to' "lfh'e blanks as they pass through the spraying zone and thereby insuring their receiving a thorough coating or lacquer. lhiothe'r object 0 the invention is the provision of novel means disposed inor adjacent tothe spraying zone whereby the excess oflaoquer, o'ver and above that actually aseam the applicatioiroffthta coating to theblanks, is withdrawn and "localized ina receiyihg rece were for further'use, and which also constitutes a safety feature bg'aiforain' "a protecti'on to 'fthe operator rom the" {votesas ihlralation of lacquer spray."

A "further 1 object is 1 to provide an improved and eflect ive ar'r'an of sprayer parts, and more particu arlyin' this connection togprovide'a novel spraying nozzle ca'pahle of receiving adjustment in order to regulate the volatility andrafirgofJthe lacquer spray.

Our invention also'contemplates certain novel details of construction; combination and arrangement'ojfparts of the improved apparatus, whereby certain im ortant ad'- Vantaes are attained; as will bemor'e descri I ed hereinafter, and pointed out in the claims.

The foregoing, together with such other objects as may hereinafter appear, r; are incident to my invention, weattaign by means ofi a construaiou which is illustrated' preferred. form in the accompanying-drawings wherein'z' Figure 1 is a; front elevation of a lacquers ing' apparatus constituting one embodiment of our: invention; and Figure 2 is a plan view of the same.

Figure 3'-i's'a central section taken through Figure 1- along the line III-III.

igure'4 represents a partial vertical section of the means for exhausting and localizing superfluous lacquer illustrated at the right. oil Figure 3', and takemointhe line IV -IV; and- Figure 5- represents in enlarged detail a preferred form of one of the sprayin nozzles. Broa' ly stated, the invention pertains to a. coatin apparatuswhich contemplatesthe use of al'tra'velin'g carrier having" blank supports'pivotally carried thereon" for passing m'a'predetermined order blanks',' such as telephone partsythrough a spraying field or "fzone consisting of a plurality of grouped'sprayers adapted to apply the lacquer "or" other coating to the said parts, which-latter receive an intermittent rotation in: passing the sprayers'eonstituting the g m This-"stepby-step of intermittent ary movement is designed to insure that wbl ank, such'as'is' shownin Figure 2, shall receive a complete coating of the lacquer on sl l'its sides.

The 'inventionfurther contemplates the provision of mechanism disposed inor adacent to the "sprayingz'one, substantially in the manner as indicated more clearly in Figures? and 4', adaptedto receive and localiie the excess oflacquer spray through a perforated. 'd'rum partially inclo sed in a; casing connected with an exhaust member which is designed to provide a suction throughkuch'perforated part of the drum not inclosed. and confronting the spray'er. The drum is preferably 'jo'umaled in" the casing for rotation above a receptacle or tank containing" a"-solvent designed'to receive the excess of lacquer, andis mounted with respect to'the' tank in'the manner shown, whereby 1:111: solv'encleanses the drum as it rotates, eep' t e perfe tions unclogged and clear cli lie "lacquer; This feature-isimportaht, and is particularly advantageous in protecting the operator against inhaling the excess lacquer spray, a condition usually present in the operation of other lacquering apparatus heretoforeemployed.

Referring to the drawings, it will be seen that we provide a traveling carrier, comprising the endless chain 6 mounted for movement in a horizontal plane on'a plurality of sprockets 7 acutated constantly in one direction. The sprockets are mounted upon the shafts 8 which have their lower terminals carried in a suitable base 9, and serve as corner posts for the endless chain 6. Preferably all the sprockets turn freely upon the upper ends of their respective shafts, except one which may be suitably connected with any desired prime mover to drive the chain.

Positioned at intervals along the chain and pivotally mounted at its outer face are a series of blank supports, each consistin of a rod 10 provided at its upper end Wit a plurality of divergent and upwardly ex,- tendingfmgers 10", adapted to support the blank A, which is to receive a coating of lacquer from the group of sprayers indicated as a whole by the letter B.

The Sprayers 12 comprising the group B are so positioned relative to the traveling carrier, that as the blanks in their progression enter the field of the sprayers, a

spray'of lacquer from each of the sprayers is successively directed to the blanks in turn. In order that all sides of the blank A when passing through the spraying field or zone receive a coating of lacquer, it is necessary to provide means for imparting rotary movement to it While in this spraying field. We have found in practice that a continuous or quick rotation of the blank before the sprayer, results in the application of a non-uniform coating, and to overcome this condition we have devised a means for rotating the blank on a short arc at suitable intervals, and obtain what might be termed a step-by-step or intermittent rotary movement of the blank.

To this end, therefore, the pivoted supporting rod 10 has'iformed thereon laterally extending arms 10 provided intermediate its extremities, which arms cooperate with steps 11 to rotate the supporting rod and consequently its blank. The stops 11 extend upwardly from the base 9 a suificient distance for contact with the arms, and are positioned in the s raying field at predetermined intervals with respect to the several component members of the spraying group B, whereby an uncoated portion of the blank A during its intermittent rotation is presented to the action of the next succeeding spraying member of the group until the blank has received its complete coatmg. 7 v

Referring more particularly to Figures 1, 2, and 3, it will be noted that where in this instance three stops are employed, the group B consists of four intervaled spraymg members 12, the nozzles of which are indicated by the numerals 12, and are each disposed to direct a lateral spray of lacquer to the article to be coated. One of the group members may include as a part thereof the overhead s rayer which is provided with the dependihg nozzle 13 positioned directly over the plane of blank travel for the purpose of coating the upper surface of the blank.

The spraying members 6 communicate with a rear pipe 14 connected to a source of compressed air, and each is provided with a T having a branch pipe connection 15 leading to a tank C containin the coating liquid or lacquer. The flow 0 air and lacquer through the member I) and nozzle 12 is regulated by the cooks 16 and 17 respectively. Surrounding the nozzle end 12 of each of the members I) is an outer tubular member 18, conforming generally to the shape of the inner nozzle but having a slightly larger diameter whereby to provi e a restrlcted chamber or passa e as at 19 for the flow of gasolene therethrough. The'outer nozzle member 18 communicates through a ,flexible connection 20 with a branch pipe 21 leading from the gasolene tank D, which together with the lacquer tank 0 is supported in a plane above the feed members 6, on a suitable frame E, the frame also serving to carry the pipes 14, 15 and 21.

In order to regulate the volatility and limit the range of the lacquer spray, means are provided to further restrict the passage or chamber 19 and decrease, (or increase), the flow of gasolene which mixes with the lacquer at the point of eiilux. contemplated comprises the nut 22 mounted about the spray member I) for rotary move- The means movement by the annular stop flanges 23 formed on the'periphery of the member I) to receive the nut. The latter is provided with an exteriorly threaded hub portion 22 which receives the interiorly threaded socket portion 18 of the outer nozzle 18, the nut also serving as a cap to close the rear end of the chamber 19.

For convenience in manipulating the nut 22, a handpiece is formed on the outer face thereof as shown at 22*. Manipulation of the nut produces longitudinal movement of the outer nozzle member relative to the inner nozzle, thereby increasing or further restricting'the exit 19' of the chamber 19, as will be readily understood from an inspection of Figure 5.

Indicated as a 'wholeby the ;lette r- Fi -is the means provided for exhaustingand localizthat excess (an "her over and ii' lgve the amount 'act di rlly ii hliz edin coat ing 'the blank, confronting the group ofi, Sprayers-and suitably os'it'ion'ed to one side I I "to the'preeise arrangement of certain arts, IO

of the line of travel the blankstoreceive fthe superfluous lacquer, spray The said 1 means comprises a perforatedhollow drum 24 mounted on a shaft 25 j ournaledin the casing 26,- which latter communicates at its upper end'with an exhaust member 27, thereby 'con- I stituting an induction chamber GI The casmg designed to inclose' the p'erfograted drum except for the open portion disposed 1 in l negwith' the lateralnozzle's 12, which 15.

ftendin opening provides an induction aperture ex- L centrally across a portion of the front ace of the casing. i v

That part of the cas n located belovv'the induction a' ertureis o box-like shape to receive the ocalizin receptacle .ortank 28, which contains a so vent, such as asolene. The tank normally rests on the b ock 28, removal of which permits the tank to be taken out and emptied when necessary.

These blocks furthermore raise the tanksufliciently so that" the drum 24 as it rotates passes throu h the solvent, cleaning the er-. forations 0% accumulated lacquer, e drum receives its rotary movement through the shaft 25 which referably in turn is actuated by earin operatively connected with the en less c ain 6.

Supported by the lower portion of the casing is a horizontal shelf 29 projecting into and below the line of blank travel, its inner marginal edge 29 bent to fit easily against the periphery of the drum at the lower edge of the induction opening in the casing. Similarly the marginaledge of the casing 26 which defines the upper edge of the induction opening is bent as at 26 to bear easily against the periphery of the drum as it rotates.

With the parts in position as described, the operation of the apparatus is substantially as follows. The line of blanks in entering the spraying field occupy a position midway of the spraying group and the induction chamber, and receive their intermittent rotary movement in the manner already set forth, as they progress toward the terminus of the field. By manipulating the adjustable nozzle the range of each of the sprays can be increased, or limited, as may be desired. The excess of lac uer spray is induced by the action of the ex aust to pass through the perforations of the drum and into the localizing tank for further use. The perforations of the drum are kept clear of the lacquer in that the drum is arranged to pass through the solvent contained in the localizing tank.

From the foregoing the essential features, elements, and operation of the apparatus, together with its simplicity and other ad- I a oup I the spraying members fOIII11I1%\ being disposed at intervals wit vantages-harassment clearly apparent to in the art. V

. We-do not intend to restrict ourselves to the exact 'detai-ls' of construction shown, nor

pended claims.

* Having thus described'our invention, and 1 illustlfated use, what 'we claim-as new and desire to secure by means of Letters Patent,

a; arefouewinge- 1. In an apparatus of. the class described .the combination with a traveling carrier, oi I a blank support pivotally mounted thereon,

"sprayers arranged to direct coating material to the blank as it'is passed through the spraying-field carrier, the group respect to each otherg'and' support en ging means positioned in the spraying fie d with reference to the intervaled group members so as to impart an intermittent rotary movement to the blank at poin-tsintermediate the group members, substantially as described.

2,, In an apparatus -of the character described and in combination, a traveling carrier for carrying blanks to be treated, a blank supporting member pivotall mounted on the carrier and formed wlth abutments, a plurality of intervaled sprayers for directing sprays of coating material to the blank as it is passed through the spra ingfield by said carrier, and a plurality 0 stop members located approximately in the plane of blank travel for contact with the abutments in the spraying field and arranged in series with reference to said intervaled sprayers whereby the abutments successively engage with the stop members to impart an intermittent rotation to the blank on short arcs and intermediately of the Sprayers.-

3. In an apparatus of the class described; in combination, a spraying device for directing a spray of lacquer, or the like, to articles to be treated while in the spraying field, and means for receiving superfluous lacquer spray comprising an induction chamber confronting the spraying device and provided with an induction aperture in its wall, a solvent container in the chamber, a perforated rotary drum so mounted in the chamber as to have an arcuate portion of its periphery occupy a position in the induction apertureand another arcuate portion disposed below the plane of the upper edge of the said container, substantially as and for the purpose set forth.

4. In an apparatus of the character described, the combination of traveling means for carrying articles to be treated comprising an endless chain, spraying mechanism the articles while passing through the spraying field, induction means so coated with reference to the spraying mechanism as to receive the excess of spray, said means ineluding as a member thereof a perforated rotary drum, and driving connections between the drum and the said endless chain.

In an apparatus of the character described, the combination with a spraying de vice, of means for receiving excess spray therefrom comprising an induction chamber having an induction aperture confronting the spraying device, a movable screening member in said chamber and in operative relation with said induction a erture, and an exhaust member connecte with said chamber and adapted to communicate with the induction aperture through the said screening member.

6. In an apparatus of the character described, the combination with a spraying device, of means for receiving and retaining excess spray therefrom comprising an induction chamber confronting the spraying device and formed with an intake aperture, a solvent container communicating with said 7. In an apparatus of the character described, the combination with a spraying device of means for receiving and retaining excess spray therefrom comprising an induction chamber confronting the spraying device and formed with an intake aperture, a solvent container communicating with said chamber, a perforate rotary drum positioned in said chamber to have a portion thereof coinciding with said aperture and another portion disposed in said solvent container, and means for actuating said drum.

In testimony whereof we have hereunto signed our names in the presence of the two subscribed witnesses.

LEOPOLD CARUSO. SALVATORE MORICI. Vitnesses:

W. HERBERT FowKns, JOSEPH H. NICOLAI.

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