US465461A

US465461A - glaus

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Publication number: US465461A
Authority: US
Publication date: 1891-12-22
Anticipated expiration: 1908-12-22

Description

(No Model.) -3 Sheets-Sheet 1. H. CLAUS. MACHINE FOB. ENAMELING SHEET METAL, &c.

No. 465,461. Patented! Dec. 22, 1891.

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H. CLAUS. MACHINE FOR ENAMELING SHEET METAL, 6m. No. 465,461. Patented 1190.22, 1891.

` UNITED STATES PATENT OFFICE.

HUBERT oLAUs, or THALE-IN-TI-IE-I-IARZ, GERMANY.

MACHINE FOR ENAMELING SHEET METAL, &C.

SPECIFICATION forming part of Letters Patent No. 465,461, dated December 22, 18)1.

Application filed August 26, 1891. Serial No. 403,748. (No model.)

.T0 all whom it may concern.-

Be it known that I, HUBERT CLAUS, a resident of Thale-in-the-Harz, Empire of Germany, have invented an Improved Machine for Enameling JSheet Metal and 'other Substances, of which the following is a specification.

This invention relates to anew machine for spreading liquid enamel or other analogous liquid or semi-liquid matter upon plates of sheet metal or other substances and upon sundry other surfaces.

The main use to which my invention can be put is to spread enamel upon metallic platesl for the manufacture of enameled sign-boards and to avoid hand labor and to insure a greater uniformity in the coating of enamel, and therefore a better quality of sign.

The invention consists of a new combination and arrangement of parts hereinafter more fully specified, and pointed out in the claims.

In the accompanying drawings, Figure l represents a vertical longitudinal section of my improved enameling-machine, the line l 1, Fig. 3,indicating the plane of section. Fig. 2 is a detail vertical section on the same line of the upper part of the machine and is on a larger scale than Fig. l. Fig. 3 is a plan or top view of the machine, parts being broken away. Fig. 4. is an enlarged plan ortop View, partly in section, of one end of the upper portion of the machine. Fig. 5 is an enlarged and somewhat exaggerated bottom view of the valve portion on the lower end of the hopper. q

The letter A in the drawings represents the main lower framing of the machine. In this frame are the bearings for two parallel shafts B and C, each carrying a pair of sprocketwheels a ce, over which sprocket-wheels endless chains d d are placed. These chains are represented in Fig. 3 bydouble dotted lines and in Fig. l by single heavy dotted lilies. The two endless chains d d are connected by slats e, made of wood or analogous substance and riveted or otherwise tied tothe chains, and over these slats e is placed an endless band or apron f of wire-gauze or analogous fabric. All these parts are arranged to constitute an endless carrier for the plates or articles to be enameled, said carrier being put in motion Whenever rotary motion'is imparted by a belt g to a pulley on the shaft C from a suitable driving-pulley 7L.

Suitable idle-wheels@ are hung in the framingA at proper intervals to support the chains dand apron f in a substantially horizontal position during their passage from one sprocket-wheel .to the other. A suitable brush j is placed beneath the apron f to remove from its surface any enamel which may adhere thereto. The lower frame A supports at or near its center an upwardly-extending framework D, which is composed, mainly, of four posts 7c, that are braced together by horizontal 'braces Z and m, and that rest with their lower ends on bolsters n, that are formed on the frame A. By means of screws E or analogous mechanism the entire central framework D may be raised more or less, for purposes hereinafter more fully described. The above-mentioned upwardly-extending framework D carries at its upper portion a funnellike vessel F, within which is contained a perforated false bottom G, below which false botf tom the vessel F contains a stirrer-wheel H and below that a longitudinal slit or outletopening o. Directly above the ycentral semicylindrical depression of the perforated false bottom or sieve G the funnel F contains a rotary brush l. Beneath the central slit or outlet o are two rubber blades p p, which, as Fig. 2 more clearly indicates, can have their lower ends brought into close proximity with one another to constitute a narrower, or, when desired, a wider, outletfor the liquid enamel. These blades, which are made of india-rubber or analogous substance, have affixed to their outer sides short plates q q, which are arranged at about equal distances apart, as indicated by dotted lilies in'Fig'fS, and as also indicated in Figs. 4 and 5. Each plate q connects by a link r with a crank s, whose hub embraces a shaft J, said hub carrying a cou nterpoise t. The hub of each crank s and counterpoise t can be clamped onto the shaft .I by screws w; but by unfastening said screws the said hub will remain loose on the shaftJ and the counterpoise twill press its plate q inward, so as to crowd the rubber lips or valves p :together at that place. A shaft L, which is hung in the frame D and has a hand-wheel so, has right and left screws y, which gear into IOO worm-wheels e', that are mounted upon the shafts J J, so that by turning the hand-wheel or; the shafts J J on opposite sides of the funnel will be turned in opposite directions, and with them the hubs of those cranks s that are clamped tight to said shafts by their screws w. Thus when all the cranks s, together with their counterpoises, are tightly clamped by the screws tu to the shafts J the turning of the right and left screws of L will open or shut the valves p uniformly throughout their length", but when some ofthe cranks s are left loose on said shafts, then those `which are loose willhold their portions of the flexible valves p in a substantially closed position, while those which are fast will be able to draw their portions of said flexible valves farther apart. This is indicated by Fig. 5. Hence I am enabled by this arrangement to open the outlet from the funnel F more or less throughout its length, or to opensaid outlet more or less at certain intervals of its length. Beneath the outlet thus formed by the valves p are hung inV the framing D two rollers M M, whose shafts lie in slotted bearings, and can, by screws CL2, (see Fig. 4t.) be set more or less apart or more or less closely together. The shafts of these rollers M M are geared together at one side of the machine, as indicated at b2 in Fig. 3, so that as rotary motion is imparted to one by belt cl2 from the drivingshaft 71, said motion will be transmitted in opposite direction to the other of said rollers.

Beneath each roller M is a scraper N, as clearly shown in Fig. 2, and underneath these Scrapers there is placed an inclined blade O, which is vertically adjustable in a supporting-bracket P and which can be tilted more .or less in said bracket. Rot-ary motion can be imparted to the brush I vby a belt e2 from the shaft h and to the stirrer II by a belt f2 from the driving-shaft h. Of course, instead of connecting the driving-shaft by belts in the various contrivances to be rotated, other means of communicating the desired motion may be employed.

Il avin g now described the general construction of my machine, I will proceed to state itsA operation: The liquid or semi-liquid enamel is put into the funnel F and flows, owing to its gravity and liquid character, through the sieve G. If, however, any partof the enamel should be too thick to pass through -said sieve it will be retained by the same and gradually iow underneath the rotary brush I, which will reduce the thick matter and force it through the sieve. The liquid matter passing underneath the sieve Gr is therefore of uniform consistency and will gather in the rounded lower part of the funnel, where it is exposed to the rotary agitator H, which prevents the solid particles of the enamel from becoming separated or settling in the liquid parts and from becoming too consistent or lumpy. The enamel gathering in the lower part of the funnel is now free to escape through the opening'o and between the valvelike blades p, which latter are adjusted a desired distance apart, either throughout their entire length or at intervals, so'as to allow a given quantity of enamel to flow between them during a given period of time. If the enamel is not to escape through the entire length of the slots formed between the valves p, these valves can be kept closed altogether at or near the ends, the middle remaining open, or at or near the middle the ends remaining open or alternately in sections, as indicated in Fig. 5; and right -here I desire to have it understood that, instead of using two flexible valves p p, with means for moving them in wholeor in part away from each other, one of said plates may be flexible and movable, while the other may be perfectly stationary and immovable, in which case the stationary one would be made of sheet metal or similar substance. As the enamel leaves the valves p in a stream of the desired width, it flows between the rollers IWI M, which rollers are adjusted as far apart as desired to insure the discharge of the desired quantity of enamel during a given period of time. The enamel passing between these rollers is removed from their surfaces by the Scrapers N, and' flows from these scrapers upon the inclined smooth plate O, whence it flows in a continuous current upon the plates or articles carried by the apron f, said articles meanwhile moving with the apron from one sprocket-wheel to the other.

In order to regulate the distance which the liquid enamel shall fall from the plate O to the article to be enameled, the entire framing D, with its appurtenances, is made vertically adjustable by means of the screws E or similar mechanism. By this adjustment I am enabled to give a greater fall to thick enamel and a less great fall to liquid enamel. Any enamel which may have entered between plates or articles tobe coated can be received .in a vessel placed under thev apron f and any adhering to the apron will be taken olf by the brushj. The operation of the machine may be continuous, but can be interrupted Whenever desired by a suitable belt-shipping apparatus applied to the belt g or to the belt for driving the shaft h.

Having thus described my invention, what I claim isel. The funnel F,having lower outlet-opening o, combined with the false perforated bottom G, placed above said outlet and having central semi-cylindrical depression, the rotary IOO IIO

brush I, placed above said perforated false bottom, and the rotary agitator I-I, placed beneath said perforated false bottom and above said outlet-opening vv, substantially as herein shown and described.

2. The funnel F, having outlet opening o, combined With the lower converging and flexible valve-plates p, and means, substantially as described, for holding said valveplates wholly or in part together or apart, as

specified.

as long as the outlet-opening, and with the short plates q, aflixed to the outer sides of said flexible blades, links fr, cranks s, counterpoises t, screws w, shafts .l J on opposite sides of the funnel, worm-wheels .e on said shafts, right-.and left screws y, and shaft L, all arranged for operation substantially as herein shown and described.

5. The combination of the funnel F and its outlet-opening o, and means, substantiallyas described, for regulating the size-of said opening, with rollers M M below said funnel, Scrapers N, and inclined plate O below said roller, substantially as and for the purposes herein shown and described.

6. The combination, in a machine for covering metal plates and other articles with enamel, of the endless apron f, and'mcans, substantially as described, for supporting and moving the same, with a funnel F, placed above said apron, and means, substantially as described, for regulating the discharge of liquid matter from said funnel, and with the inclined plate O interposed between the outlet-opening of said funnel and the endless apron f, substantially as herein shown and described.

HUBERT CLAUS.

Witnesses:

TH. BREHMSALTZ, G. WESEMEIJER.'