US504672A - Machine for painting - Google Patents

Description

{No Model.) 2 Sheets-Sheet 1.

W. H. DOW 85 'D. G. CRANE. MAGHINE FOR PAINTING, VARNISHING, &c.

No. 5%,672; Paitsnted Sept. 5., 1893.

(No Model.) 2 Sheets-Sheet 2.

W. H DOW & D. G. CRANE. MACHINE FOR PAINTING, YARNISHING, M3.

N0. 504,672. Patented Sept. 5, 1893.

E W Q 0 y i UNITED STATES PATENT OFFICE.

"WILLIAM H. DOW AND DAVID G. CRANE, OF BURLINGTON, VERMONT.

MACHINE FOR PAINTING, VARNISHING, 800.

SPECIFICATION forming part of Letters Patent No. 504,672, dated September 5, 1893.

Application filedApri122, 1893. Serial No. 471,457. (roman To all whom it may concern.-

Be it known that we, WILLIAM H.Dow and DAVID G. CRANE, citizens of the United States, residing at Burlingtou,in the county of Chittenden, State of Vermont, have invented cer= tain new and useful Improvements in Machines for Painting, Varnishing, &c.; and we do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our present invention relates to machines for painting, staining or varnishing one or more plane or irregular surface or surfaces of any material which can be passed through the machine.

The improvement is especially designed for operation upon a molding, stile, rail, or other strip or piece of wood which it is desired to stain or varnish.

By the use of our invention great economy in labor is secured, the work is turned out rapidly, the painting or staining will be done evenly and thoroughly upon a molded or irregular as well as upon a plane surface, and less of the stain, paint, or varnish will be used than would otherwise be necessary.

With such objects in view our improvements consist in the novel parts and combinations thereof hereinafter set forth.

In order to make our invention more clearly understood we have shown in the accompanying drawings means for carrying it into practical effect, without however intending to limit our improvements in their useful applications to the particular construction which, for the sake of illustration, we have delineated.

In said drawings,-Figure 1 is a longitudinal sectional view of a machine for applying varnish, stain, 8.10., embodying, our improvements. Fig. 2 is an end view of the same. Fig. 3 is a plan view, a portion of the frame being removed. Fig. 4 is a transverse sectional view on line IV-IV, Fig. 8.

Referring to the drawings, 1 indicates a frame of suitable construction in which is mounted a tank 2 adapted to contain the varnish or other material which is to be applied.

3 is a transverse shaft mounted in suitable bearings in the frame 1 and driven by a belt or other power wheel 4:.

5 is a roller, which may be of rigid or suitable elastic material mounted on the shaft 3 to which it is secured bya set-screw 6. This roller supports the molding or other strip A of wood or other material and feeds the same longitudinally through the machine, at the same time applying to its under surface the varnish or other liquid from the tank 2 into which the bottom of the roller dips.

7 indicates pressure rollers mounted upon a transverse shaft 8, on which they are laterally adjusted in accordance with the width and shape of the strip A and secured by set screws 9. The shaft 8 is held in bearings in the lower ends of vertically movable framepieces 10 which pass through a horizontal frame piece 11 of the main frame 1. The piece 11 forms a guide for the frame-pieces 10 and is adapted to be secured in any desired position, after being adjusted laterally on the main frame to bring the rollers 7 over the strip A,by means of clam p-screws 12 passing through slots 13 in the part 11 and engaging the frame 1. The position of the strip A relative to the said pressure rollers may however be determined by guides hereinafter referred to.

14 is a cross piece fitting in recesses 15 in the upper ends of the uprights 10.

16 indicates springs which fit in the ends of said cross piece and are clamped in place by screws 17, which at the same time serve to secure the parts 14 and 10 together. The lower ends of said springs 16 bear upon the framepiece 11 and tend to lift upward the pressure rollers 7 18 is a screw passing loosely through the cross-piece 14:, engaging and vertically adj ustable in the frame-piece 11, and confining between its head and the cross-piece 14: a spring 19. By turning said screw downward the downward pressure of the spring 19 may be caused to overcome the upward pressure of the springs 16, so as to hold the rolls 7 firmly down, but with a yielding pressure, upon the strip A. The strip A, thus fed through the machine by the roll 5 in conjunction with the rollers 7, is held in place and guided laterally by guides 20 which are connected with the main frame by parallel links 21 and held against the strip by suitable adjusting means such as screws 22. As it passes through said guides the strip A is supported by a short table M the top of which is slightly lower than the top of the roll F. The strip A leaves the roll 5 with a sufficient quantity of the varnish or other liquid applied to its under 5 surface but it is necessary to distribute said liquid evenly over said surface to give a proper finish to the article. We effect this result by brushes 23 mounted beneath the strip with their bristles directed upward and to in contact with its bottom face. These brushes are mounted upon a bar or plate 24 suspended in suitable vertically adjustable frames 25. This vertical adjustment, to raise or lower the brushes as may be necessary to cause them to properly distribute and smooth the paint or varnish, is preferably efiected by screws 26 which are swiveled at 27 in the upper parts of the frames 25, or otherwise connected therewith, and pass through stationary frames 28 mounted upon the main frame 1. The screws 26 may be clamped at the desired height in the frames 28 by means of set nuts 29 (see Fig. 4:). It is very important to the action of the brushes 23 that they shall be adjusted from time to time relative to the strip A so as to keep their bristles elastic and enable them to wear evenly. To this end the said brushes are clamped upon the plate 24: by screws 30 or other clamping means so that 30 they can be from time to time partly rotated to change the presentation of the bristles to the surface of the strip.

31 is a frame supported at its ends in cross pieces 32 which latter are connected to the 3 5 lower ends of the screws 26.

33 indicates rollers mounted upon suitable transverse shafts 34: which find hearings in the frame 31. These rollers so bear upon the top of the strip A as to hold the same with the necessary pressure upon the finishing brushes 23. The frame 31 may be vertically adjusted by means of the nuts 29 already described. The height of the frame 25, with the rollers 33, may at the same time be 5 changed by raising or lowering the nuts 35, which support the frames 25, upon the lower portions of the screws 26. q

We will now describe the means by which the varnish or other liquid is elevated from the tank 2 and applied to the side of the strip A. It is sufficient for the purposes of explaining our improvements to illustrate and describe a means for operating upon one side of such strip, and for many classes of work this will be suiiicient. \Vhen however it is necessary to operate upon both sides or edges of the strip the said means which we are about to describe will be duplicated. vlVe may here also state that our improvements may be availed of in a machine in which varnish or other liquid is applied to the top as well as to the other faces of the strip.

36 is a flanged wheel mounted upon the shaft 3 and partly immersed in the liquid in the tank 2. This wheel is situated at or near that side or edge of the strip A upon which it is desired to operate, as best seen in Fig. 2

37 is a side brush the head of which fits in a suitable socket 38, which latter is clamped by a screw 39 to an arm 40. By partially rotating the socket 38, or the brush therein, the bristles of the brush may be difierently presented to the edge of the strip and caused to wear evenly and remain elastic so as always to enter properly into the recesses of any molding which may be formed upon the edge of the strip. The arm 40 is preferably bent as shown in Fig. 2 and its upper end is adjustable in the frame-piece 11 which supports it, as for instance by a wedge 41, so that the brush can be brought into proper engagement with the side or edge of the strip A.

42 is a gage preferably of such shape as to engage the inner surface of the flange of the wheel 36 and extending down therefrom to a point above the side brush 37. This gage is provided with a slot 43 through which passes a clamping screw 44 into the frame-piece 11. By this means, or by anyother suitable means of adjustment, the gage may be caused to remove more or less of the varnish or other liquid from the wheel 36 and deliver such liquid at the desired rate, which will depend upon the thickness of the strip A, to the side brush 37.

45 indicates one or more side finishing brushes which are suitably supported upon the main frame or any attachment thereof so as to operate upon the edges of the strip subsequently to the brush 37 so as to properly distribute the paint or varnish upon said edge.

A6 is an inclined trough or drip pan arranged beneath the brushes 23 and adapted to collect the superfluous liquid which said brushes may remove from the under side of the strip. The brushes 45 are preferably situated over the trough2 or an extension thereof so that the superfluous liquid which they remove is re turned directly to said trough. These brushes are held in sockets 4:7, in which they may be rotatably adjusted and then secured by set screws 4.8.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

1. In a painting or varnishing machine the combination of a transverse shaft having a roll, means cooperating with said roll to feed the material to be painted, a tank supplying liquid to the roll, the stationary and adjustable finishing brushes 23 for operating on the surface coated by the roll, the stationary edge painting or coating brush 37, edge finishing brushes 45, a scraper adapted to deliver material to said brush 37, and means operated by said shaft for supplying liquid to said scraper, substantially as set forth.

2. In a painting or varnishing machine, the combination with means for feeding the material, of a brush for operating upon the side or edge of the latter, a disk or wheel 36 mounted in proximity to said brush, means for supplying liquid to said disk or wheel, and a gage for removing the liquid from the wheel, said gage extending to or over the said brush, substantially as set forth. 1

3. The combination with means for feeding the material, of the side brush 37, the arm 40 supporting the same and adjustable in the frame of the machine, a tank 2, a wheel or disk in said tank, a gage for removing the liquid from said wheel and directing it to said brush, and a finishing brush 45 for operating upon the side or edge of the material subsequently to said brush 37, substantially as set forth.

4.. In a painting or varnishing machine the combination of a tank or reservoir, a roller adapted to receive liquid from said reservoir and apply it to the material to be operated upon, a disk or wheel mounted upon the shaft of said roller and adapted to receive the liquid to be applied, a gage for removing said liquid from the disk or wheel, and a side or edge brush which receives the liquid so removed by the gage, substantially as set forth.

5. The combinationwith the tank 2 the shaft 3 and roll 5, of the laterally adjustable framepiece 11, an arm adjustable in said frame piece and carrying an edge brush 37, and

means for supplying liquid to said brush connected with and operated by said shaft, substantially as set forth.

6. The combination with the roll 5, the side brush, and means for supplying liquid thereto, of the guides 20, situated opposite to each other parallel links controlling said guides, and laterally adjustable screws 22 hearing against the rear of the guides for holding said guides in place against the strip to be operated upon, substantially as set forth.

7. The combination with the roll 5, and means for supplying liquid thereto, of the vertically movable frame 10, 10, 14, rollers 7 carried by said frame, the supporting frame piece 11, springs 16 for forcing said frame upward, the screwlS and spring 19 for depressing the frame, and the finishing brushes 23, substantially as set forth.

In testimony whereof we aflix our signatures in the presence of two witnesses.

WILLIAM H. DOW. DAVID G. CRANE.

Witnesses:

J UDSON A. BALDWIN, E. S. ISHAM.

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