US579961A

US579961A - craig

Info

Publication number: US579961A
Authority: US
Publication date: 1897-04-06
Anticipated expiration: 1914-04-06

Description

(No Model.) 2 Sheets-Sheet 1.

w. s. CRAIG. MACHINE FOR PAINTING CANS.

Pa ented pr. '6 1897.

QYH,

(No Model.) 7 2 Sheeta--Sheet 2. W. S. CRAIG. MAGHINE FOR PAINTING CANS.

No. 579,961. Patented Apr. 6, 1897.

q s x v I v Q Q J W m-zizzfiiziz'g I I 2y 4M WW4, W JZ-Ja UNITED STATES PATENT OFFICE.

IVILLIAM S. CRAIG, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK G. LIBKE AND DIETRICH H. BRUNJES, OF SAME PLACE.

' MACHINE FOR PAINTING CANS.

SPECIFICATION forming part of Letters Patent No. 579,961, dated April 6, 1897. Application filed May 7, 1895. $erial No. 548,410. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM S. CRAIG, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Machines for Painting Cans, which is fully set forth in the following specification, reference being had to the accompanying drawings, in which I Figure 1 is a side elevation of one side of my machine. Fig. 2 is a plan View of the central portion of the said machine with the paintcans removed. Fig. 3 is a side elevation of the opposite side of my machine from that shown in Fig. 1. Fig. 4 is a vertical crosssection on the line 4 4 of Fig. 3. Fig. 5 is a detail side elevation of one of the cans in a position to be painted. Fig. 6 is a detail perspective of the devices for supplying the brushes with paint. Fig. '7 is a plan of the construction shown in Fig. 6. Fig. 8 is a detail view of the driving-pulley for communicating power to the machine. Fig. 9 is a vertical section on the line 9 9 of Fig. 8.

The object of my invention is to paint that portion of the cans where the solder is applied for soldering the heads of the cans to the body of the cans automatically by machinery and do it very rapidly as the cans pass through the machine.

My invention consists of the devices and combination of devices hereinafter fully described and made the subject-matter of the claims hereof.

In the accompanying drawings, A represents the body of the machine, which is supported on suitable legs B.

The body of the machine is composed of two side pieces 0 and D, which are held in position relative to each other by cross-rods E. These cross-rods are firmly attached by any suitable means to one of the side pieces, while the other side piece is adjustable on these cross-rods by means of nuts, so that the side pieces can be set at such distances apart as to accommodate the machine to any length of can that it is desired to paint.

F are what I term tracks, secured to the inner sides of the side pieces of the body of the machine. The ends of the cans rest on these tracks and roll on them down the incline of the tracks.

The cans H are placed upon the tracks F at the upper end of the machine. The foremost of these cans H strikes against a cross-rod I, which extends across the frame of the machine in front of the upper portion of the can. The ends of the said rod I move in slots I, formed in the pivoted arms J. There are also pivoted to the said arms J, near the upper end thereof, two short arms L, the outer ends of which are joined together by a second crossrod N, parallel to the first cross-rod I.

Upon one side of the machine there is pivoted the lower end of a rod M, the upper end of which is pivotally connected with the outer end of one of the short arms L. One of the arms J extends downward some distance below its point of pivoting to the framework of the machine, and to the lower end of this arm is pivoted one end of a connecting-rod O, the other end of which is pivotally connected at the lower extremity of the machine to a crankarm 0, mounted on a rock-shaft P. Upon the said rock-shaft P is mounted a trip Q, which extends upward in the path of the cans. The shaft P, the trip Q, and the crank-arm O are restored to a normal position by the spring R. The operation of these elements of the apparatus it is not difficult to see.

When a can 011 the point of leaving the machine passes over and operates the trip Q, depressing the same, the locking and unlocking mechanism, hereinabove described and located near the upper end uf the apparatus, is thrown into the position shown in dotted lines in Figs. 1 and 3. The first of the cans H passes under the cross-rod I and is free to proceed down the incline of the machine. The next succeeding can is prevented from following by the cross rod N striking against the top thereof. When the locking mechanism, through the operation of the-spring R, is again brought back into normal position, the said succeeding can butts against the cross-rod I.

"The said can and all the remaining cans behind it are thus retained until the unlocking mechanism is again operated. This locking and unlocking is therefore effected automatically by the movement of the cans themselves as they roll down the tracks of the machine. As each can in succession leaves the said locking and unlocking mechanism it strikes against and depresses the trip S, which is mounted on a shaft T, journaled in the f ramework of the machine, the said shaft T being provided at each end outside of the said frame work with a crank-annT the free end of which is formed with a projecting finger T The said shaft T is further provided at one side of the machine with a third crank arm T. A spring 8 is located and attached in any convenient way to restore the rock shaft T and the trip S to a normal posit-ion after passage of the can. The fingers T are adapted to depress, when the rock-shaft P is in its normal position, the ends of two rods U, which are pivoted to move in a vertical plane by bein g connected to the sides of the frame by the swivel eyebolts p. The other ends of the rods U are turned upward, as at U, to bear against and support the pivoted plates 0, as will later be described. To the free end of the third crank-arm T, carried by the rockshaft T, is pivoted one end of the conn ecting rod q, the other end of which is pivoted to the lower end of a pivoted stop 0, the upper end of the said stop bearing against one en d of the cross-rod b, as will presently be described.

At a point below the stop S the tracks F are interrupted, as particularly shown in Fig. 5. In the sides of the framework there is here journaled a shaft cl, carrying two rollers 6, provided with milled peripheral surfaces. On one end of the shaft (1, outside of the framework of the machine, is mounteda drivingpulley f. The said driving pulley is loose upon the said shaft (Z and is connected therewith by the coiled spring 23, as is shown in Figs. 8 and 9. Below the milled rollers care placed two stop-rolls V, carried by the free ends of two arms a, the other ends of which arms are pivoted to the tracks. The said two arms a are connected with each other by a rod b,extending across the apparatus and adapted to move upward and downward in the slots 1), formed in the sides of the framework. The arms a and the rolls V, carried thereby, are normally supported in a raised position by the springs 7'.

Upon each side of the framework of the machine opposite the devices last above described is mounted a vertically-adjustable support 0, to the upper edge of which is pivoted a plate 0, upon the top of which plate there is secured a brush it. The said plate 0 and the brush which is secured to it are held in an approximately horizontal position by the turned-up end U of the swiveled rod U, above described. Upon each side of the framework of the machine is mounted a second vertically-adjustable support j, secured in its vertical adjustment by the thumb screw 7;. Each of the supports j carries a paint-pot 1', provided with a drip-cock Z. To the bottom of each paint-pot, underneath the drip-cock Z, is secured a small trough m, which is either perforated or provided with an outlet, such as m. Above the troughs m there extends across the framework of the machine a horizontal slotted strip n, supported from the said framework by the adjustable pieces n. To the said horizontal-strip nare secured the brushes gin such a manner as to be horizontally adjustable thereon.

In operation when a can passes down the tracks F onto the milled rollers c it is held in contact with the said rollers by the stoprolls V, which are prevented from being depressed by the said can through the cross-rod b resting upon the pivoted stop 0. The milled rollers e are rapidly revolving at the time the can comes in contact with them. To allow time for the rollers to impart their motion to the can and to prevent abrasion of the. can by the said rollers, the driving-pulley f is socured on the shaft (Z through the intermediary coiled spring t, whereby the said driving-pulley partially rolls up the said spring, and the shaft cl and the rolls 2 only gradually resume their normal velocity of rotation. lVhile each can is being so revolved, the paint flowing from the paint-can 2', through the trough m and outlet on, onto the brush 9 is thus applied to the edges of the round surface of the can. Some of the/ mint passes over onto the edges of the flat ends 6f the can and is thelleipread alongWb'fhElTes h as arf'a'fihular stripjdiFilLv" As a second can leaves-the locking device at the upper end of the machine it passes over and operates the trip S. As a result the ends of the swiveled rods U are no longer depressed by the fingers T of the crank arin T The plates 0 are no longer supported by the other and upturned ends U of the said rods U and swing down into the position shown in dotted lines in Fig. at, whereby the brushes carried by the said plates are withdrawn from contact with the ends of the can. A second efiect of the operation of the trip S is to throw the pivoted stop 0 out from under the cross-rod b to allow the stop-rolls V to be depressed by the weight of the can which has just been painted and permit the said can to pass down the tracks toward the lower end of the ma chine. The spring 3 restores the rock-shaft T and the crank-arms mounted thereon to a normal position when the can which has op erated the trip S has passed by the same. The fingers T on the crank-arms T bear 011 the swiveled rods U and through them throw the brushes h up into normal position for painting the can which approaches them. The stop-rolls V, having already resumed their normal elevated position by virtue of the springs 'r, are retained in that position again by the stop 0 being brought under the cross-rod Z2, when the crank-armT and the rod (1 resume their normal position.

From the foregoing description of the operation of my machine it will be apparent that the same is automatic in every respect, the cans themselves passing down the tracks under the influence of gravity, serving to actuate the various feeding devices, the only power required being that which is applied to the driving-pulleyfi From the description of the construction of my machine it is apparent that the same is adjustable to suit cans of any length or of any diameter throu ghout all its parts.

In another application filed simultaneously with this, Serial No. 548,409, I have described a locking and releasing mechanism substantially identical with that shown and described herein at the upper end of the machine. In said application, Serial No. 548,409, I have further embodied generic claims upon the said mechanism. In this application I claim it only in combination with other devices shown herein.

Having fully described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for painting cans, tracks on which the cans pass; a locking device for holding the cans and releasing them, one at a time, to pass forward on the track; a painting-brush holder held on the frame of the machine in position to hold the brushes in contact with the surfaces of the can, to paint it; stopping and revolving devices in the frame of the machine to hold and revolve the cans in contact with the painting-brushes; tripping devices attached to the frame of the machine by which the can is released from the holding device which holds it in contact with the brushes by a can approaching the painting-brushes; and a tripping device for feeding the cans on the track, one at a time, which is also operated by a can passing on the tracks of the machine, whereby the cans are automatically fed to and released from the painting devices.

2. In a machine for painting cans, the inclined tracks upon which the cans roll, revolvin g rollers placed in the path of the cans and adapted to revolve the same, stop-rolls adapted to hold the cans in contact with said revolving rollers, and paint-brushes adapted to contact with and paint the can while being revolved.

In a machine for painting cans, stoprolls for stopping the cans at a fixed point in the machine; suitable devices for revolving the cans rapidly when in contact with the stop-rolls and the brushes, g and h, substantially as described, adapted to contact with and paint the edges of the cans while being so revolved.

4. In a machine for painting cans, inclined tracks upon which the cans roll; the stop-rolls placed in the path of the cans to arrest the same in position to be painted; the milled wheels which contact with the cans when held against the stop-rolls and which revolve the said cans; and devices adapted to release the stop-rolls from their position in the path of the cans to permit the said cans to pass out of contact with the milled wheels.

5. In a machine for painting cans, revolving milled rollers placed in the path of the cans and adapted to revolve the same; stoprolls constructed to hold the cans in contact with the said milled rollers while being revolved; and a tripping device operated by the cans passing along the track of the machine, adapted to remove the supports of the said stop-rolls and so release the can; in combination with brushes so placed as to contact with and paint the can while being revolved.

6. In a machine for painting cans, the stoprolls, V; the pivoted arms, a; the cross-rod, b the stop, 0; a tripping device operated by the cans, adapted to remove the said stop; in combination with devices adapted to revolve and to paint the cans while arrested by the said stop-rolls; substantially as described.

7. In a machine for painting cans, stoprolls adapted to arrest the cans in a position to be painted; the milled rollers, e the shaft, d; the driving-pulley, f; and the spring, 15; in combination with devices adapted to supply paint to the can; substantially as described.

8. In a machine for painting cans, brushes pivoted to the sides of the machine in a position to be tilted to come in contact withthe ends of the cans; and a tripping mechanism for releasing said brushes from such contact simultaneously with the release of the can from the holding and revolving mechanism which held and revolved the cans while being painted.

WILLIAM S. CRAIG. Witnesses:

ALOYSIA HELMICH, A. A. MURRAY.