US1865830A - Compound lining machine - Google Patents

Description

July 5, 1932 W. F. BUTLER 1,865,830.

GOMPOUND LINING MACHINEA 2 Sheets-Sheet 1 lNvgLlIoR f @um m Q l 1 i, WN. xm IWNII m1 m NNUU n JWM M ma ,QN ,i |wlw| l, o l o Nw m n NIWWWWHH MY IU ,mm um wm m \Q\ mw July 5, 1932. W. F BUTLER ,865,830

COMPOUND LINING MACHINE Filed Sept. 26, 1927 2 Sheets-Sheet 2 lNvENToR BY ,A y M Patented July 5, 1932 airs sr'rss PATENT ortica Y WILLAM F. BUTLER, HILLSIDE, NEW JERSEY, ASSIGNOR TO .AMERICAN CAN COM- f' IPANY, GF NEW YORK, N. Y., A CORPORATION OE NEW JERSEY Coll/[POUND LINING MACHINE j spread of a lining compound as it is applied to a can end.

In lining can end flanges with a semiliquid gasket compound, which is then dried in place, the curled flanges of a can end afford 'i 10 a reduced space for the insertion of a lining die, and itis often desirable to deposit or spread the compound beyond the actual contact surface or confines of the lining die. In such a case, it is also desirable that the sides of the lining die do not engage the adjacent edges of the flange for depositing or wiping the compound from the side edges of the die. Furthermore, it is diiiicult to reach the curved edges of a can end flange by actual contact of the die itself and still to provide a gasket of proper thickness throughout.

lAn important object of the invention is in the provision of die compound applying surfaces inclined or otherwise varied to spread and distribute the compound as desired.

A further important object of this invention is the provision of means for accurately applying a gasket compound by relieving the end contact portion of the die which carries and applies the compound to be applied from the material adhering to the side Walls of the die at the Vedges of the contact surface, thereby permitting a clean-cut application of the material carried by the proper applying surface of the die, and thereby minimizing also opportunity for the die to apply compound from its sides as contradistinguished from its own operative face to the shoulder of the can end orthe curl, as the die passes onto or out of die-applying position.

Numerous other objects of the invention will be apparent as it is better understood from the following description7 which,

taken in connection with the accompanying y drawings, discloses a preferred embodiment thereof.

In the drawings:

Figure 1 is a sectional view of a compound lining machine for can ends embodying Ithis invention;

Application led Septembery 26, 1927. Serial No. 222,187.

Fig. 2 is an elevation, with a portion in section, of a lining die constructed in accordance with this invention;

F ig. 3 is a plan view of a lining die, as shown by Fig. 2;

Figs. Ll, 5 and 6 are fragmentary sections illustrating the'application of a lining compound to a curled flange of a can end by a lining die, as shown in Figs. 2 and 3; and

Figs. 7, 8 and 9 are fragmentary sections illustrating a modified form of die in three positions for applying a lining compound to the inwardly curled flange of a canend.

The operating mechanism for'this invention, as illustrated in Fig. 1, may be substantially the same as that shown in the Hothersa-ll Patent 1,634,500 granted July 5, 1927, the particular improvement of the present invention relating to the form and construction of the compound lining die.

Referring more particularly to the drawings, a table 10 issupportedl by legs 11 and 12, and has a guideway 18 in the top with a well or tank 14 extending downwardly from the table intermediate the ends of the guideway and adapted to contain a quant-ity of semi-liquid gasket compound 15.

A cover feeding mechanism at the top of the table comprises a feed bar A16 having a rack 17 engaged by a pinion 18 oscillated by a rock shaft 19. Mounted in slots 2O in the under side of the bar are pivoted feed dogs 21 suitably spaced and adapted to engage can ends 22 placed in the guideway 13, and to feed them in one direction by the reciprocation of the feed bar 16.

At the lining station, which is directly over the compound tank 14, each can end 22 is supported by means of a number of elec the bottom of the tank 14, and is adapted to be raised and lowered in the tank to carry the lining compound into engagement with the can ends.

To move the die 25, a link 30 is connect-cd to the lower end of shaft 28 and to one arm of a bell crank 31 mounted on a shaft 32 and carrying a roller 33 at its other end for engaging a cam 34 mounted on a continuously rotating cam shaft 35. Contact of the cam and its roller 33 is maintained by means of a spring 36 connected to the bellv crank 31 at one end and to a bracket 37 extending from leg 12 at the other end.

The operation of shafts and 19 is timed so that the die is moved into operative pesition to line the flange of a can end 22 while it is at rest at the lining station.

In order to prevent the operation of the lining die when there is no cover in position to be lined, a lever 38 is pivoted at the upper end to a support 39 mounted at the bottom of the tank 14 and extending upwardly between two of the arms 26, and this lever has a contact arm 40 normally disposed in the path of a can end 22 and having a notch 41 at its lower end adapted to engage 'the arm 26 of the die member when there is no can end in place. This lever is pressed in cover engaging position by means of a spring 42, which engages the under side of the arm 40 and is wound around the pivotal mounting of the lever in a well-known manner. hen the notch 41 of this lever engages the arm 26 of the die, the cam following roller 33 does not follow the contact surface of the cam 34 under the action of the spring 36, and, therefore, the die 25 is not raised. The presence of a can end 22 at the lining station releases the lever from engagement with the arm 26 and permits the normal operation of the die.

As the present invention relates more particularly to the shape of the compound applying portion of the die, Figures 4, 5 and 6 illustrate three different positions of a die for applying the compound to a can end 22, having a flange 44 formed with an inwardly curled edge 45, as provided for a double seaming connection of the can end. The upper end of the die 25 has a top contact surface 46 inclined slightly downward from its inner to its outer edge for carrying an annulus 47 of the lining compound. The outer wall has an under cut part or recess 48 extending from a point adjacent the outer edge of the compound carrying surface 46, so that a film 49 of the compound, which adheres to the outer wall of the die member, is drawn downwardly by gravity away from the outer edge of the contact surface To show the difference, the inner wall of the die member is not recessed and a film 50 of the compound extends to the inner edge of the contact surface 46 Vfrom which it is drawn away by the weight of the film, as clearly shown in Figures 4 to 6.

In Fig. 4 the die is shown as it appears just before the application of the compound to the under wall of the flange 44; in Fig. 5 the die is shown in its upward position with the excess compound of the annulus 47 projected outwardly by the inclined surface 46 to form a lining 51 which extends within the curled portion of the fiange beyond or without the confines embraced by the contact surface itself. lVhen the die is withdrawn, as shown in Fig. 6, a thin film or annulus 52 of the lining still adheres to the applying surface 46 of the die, and the lining 51 has run slightly and spread in an even film from the surface where the die member pressed the compound in engagement with the flange 44 and into the curled portion of the flange.

Figs. 7, 8 and 9 show a die member 53 of modified form in three positions, corresponding to the position of the die member in Figs. 4, 5 and 6. ln this form, however, the compound applying surface 54 at the end or top of the die member is flat, and both the inside and outside walls are formed with recesses 55 and 56 cut away from the edges of the contact surface 54, so that the films 57 and 58 of semi-liquid lining compound run down sharply from the corresponding edges of ther contact surface 54. l/Vith this construction, a charge 59 of compound lining carried by the contact surface 54 will be spread in both directions to form a lining 60 which extends beyond the edges of the die and is spread by it in a definite film or layer covering the corresponding portion of the inside of the flange, as shown by Fig. 9.

If desired, the contact surface at the end of the die member may be inclined downwardly in one direction, as shown in Fig. 4, or in both directions from a central point, rather than leaving it flat, as shown in Fig. 7. This inclination assists in distributing the compound in any desired manner within the flange, and is particularly desirable for an inwardly curled flange as herein shown, because the inwardly curled edge 45 reduces the space through which the die member can pass, whereas it is frequently desirable to spread the lining compound throughout a greater portion of the flange than is covered by the contact surface at the end of the die. In cutting back the vertical faces of the die beneath its end compound upon the sides quickly recedes, under the action of gravity, out of position which would enable the compound on the die to contact with the sides of the pass into the flange through which the die must enter, this pass being defined at one side by the can end shoulder and at the other by the edge of the curl. rlhe amount of material supplied to the can end is therefore both measured accurately and is accurately distributed in accordance with the face of the die itself. In thus c-utting away the walls at the sides of the compound applying surface, not only is the full width of the end of the die made effective, but also the lining compound carried at the end of the die is projected thereby in a more definite, accurately controlled film.

It is thought that this invention and many of its attendant advantages will beunderstood from the foregoing description, and it will be apparent that many changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the inv-ention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

l. In a gasket die lining machine, a holder for a can end having an inwardly curled flange, and means for applying a lining compound to the interior surface of the curled fiange of a can end, said means comprising a die member of a width less than that of the flange, having a compound carrying end, and having sides reduced from the edge of the end for drawing compound by gravity away from the edges of the die, whereby the compound carried at the end is applied to the interior surface of a can end flange definite in amount and spreading on said surface sidewise from said die.

2. In a gasket die lining machine, a holder for can ends, and a die for applying a lining compound upon a can end, said die having a compound applying end with sides of the die cut away inwardly to draw lining compound away from the edges of the applying end by gravity.

3. In a gasket die lining machine, a can end holder and a die for applying compound to a can end, said die having an end applying surface and an under cut side wall to draw the gasket compound away from the edge of the end applying surface.

1l. In a gasket die lining machine, a can end holder and a die for applying a lining compound to a can end, said die having an end applying surface with both sides of the die below said applying surface under cut from the edges thereof to make an accurate application of a definite amount of compound by means of the end applying surface.

5. In a gasket die lining machine, a can end feeding mechanism, means for holding a can end in position to be lined, and a die movable to apply a semi-liquid compound to a can end, the die having an upper surface inclined from the interior outwardly with under cut walls below said upper surface to apply a definite amount of compound with clean cut edges, the inclined surface spreading the compound beyond the applying surface of the die.

6. In a gasket die lining machine, a movable die for applying a lining compound in an annular ring to a can end, the applying surface of the die being formed with a portion inclined to one side of the die which spreads a compound beyond the contact surface of the die.

7. In a gasket die lining machine, a holder for a anged can end, and means for applying a lining compound to the flanged portion of the can end, said means comprising a movable die having an applying surface downwardly inclined to a side of the die for depositing a semi-liquid gasket compound at varying depths on the applying surface.

8. In a gasket die lining machine, a holder for a can end having an annular flange curled inwardly, and means for applying a lining compound to the curled surface of a flange, said means comprising a movable die having a surface downwardly inclined to a side of the die for collecting lining compound thereon and adapted to spread the compound beyond the actual contact surface of the die when it is moved to deposit the compound in the flange of a can end, the compound spreading beyond the confines of the die and into the curved surface of a flange.

9. In a gasket die lining machine, a holder for a can end with an inwardly curled flange, and means for applying a lining compound to the interior surface of a flanged can end, said means comprising a movable die member of a width less than that of a flange to which it is applied, the die member having a lining compound applying surface which is downwardly inclined to a side of the'die to spread the compound beyond the edges of the die surface by its contact with the interior of a flanged can end.

WILLIAM F. BUTLER.

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