US79548A - Improved machine for making tin-lined lead pipe - Google Patents

Description

'E.GHU BBU"GK.. MACHINE IOR MAKING TIN LINED LEA-D PIPEL.

Patented July 7,1868;

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t UNITED STATES PATENT OFFICE.

S. E. GHUBBUGK,-OF BOSTON MASSAOHUSETTS, ASSIGNOR TOJ. H.

'C'HADWIOK, OF SAME PLACE.

Specification forming part of Letters Patent No. 79,548, dated July 7, 18 68.

To all whom it may concern: Be it known that I, S. E.GHUBBUcK, of Boston, in the county of Suffolk and State of Mes sachusetts, have invented certain Improve" ments in Machinery for Making Compound Pipe; and I do hereby declare that the-follow; ing is a full and exact description thereof, reference being bad to the accompanying drawings, and to'the letters of reference marked thereon.

With reference to the accompanying draw- .in gs, Figure l is a sectional view of those parts of a. machine to which-my improvementsrelate. Fig. 2 is asimilar sectional view, showing the material introduced and the pipe in process of making. Fig. 3 is a section at line A. Fig. 4 is a section at line B.

In the drawings, a is the cylinder toreceive the material, and b c the ram or follower.

D is an annular partition, stationary with reference to the cylinder a, and dividing the space within cylinder a and around mandrele proportionately to the required relative thickness of the two metalsto compose-the pipe.

. The two parts I) and c of the rani or follower are firmly secured to each other or to a suitable cross-head, f, while the annular partition 1) is firmly secured by any suitable means, as rods g and head It, to the cylinder (1.

The operation is as follows; Any suitable stopper is placed in die j and the lower end of the space between partition D and mandrel 0, after which the different metals, in a fused or melted state, are poured, the one which forms the inner or-lining portion through the opening iin the partition into the space within the partition D, and around mandrel e, and the other, for the exterior portion of the pipe, into the space It surrounding partition D and within the cylinder, after which, hydraulic or other pressure being applied at l, the ram or follower b c-being stationary or the reverse, pressure being applied to ram or follower b c, and the cylinder to being stationary-in either case the metals are forced out through the die j in properly-proportioned compound pipe. After the first discharge, the ram or follower b c not bein g forced quite to the bottom of the cylinder, the opcnin g will be already stopped for receiving anotherehargc when the ramis withdrawn.

The withdrawingof the rannas well as its inward movement, may also "-be etfectcd. by. means of the usual hydraulicorother pressure.

The metals being separated while in afused state'by the partition (1, therein no danger of theirinterinixing in an objvctionable manner.

The advantageof a considerable saving of time is also secured in being enabled tointroduce both metals at once, or without changing the relation of any ofthe parts.

The materials for the construction of my improved machinery may be iron, steel, or other metals, as may appear most suitable for the several parts to those conversant with and practicing the art.

I do not claim the cylinder, ram, or mandrel of themselves"separately, nor the same asaa, "combination, for both devices and theircombination are old anti well known nor do Iclaim a sheath or annular partition as a means simply of preventing the lead, when poured, from coming in contact with the tin, tor this is accomplished in the machine patented to John Farrell, February 25, 1868, in which a sheath is used to protect the tin from the injurious ef-' fects of the hot lead, but which, after the lead has been poured, is entirely removed from the machine, thus leaving a void-space between the two ingots, and the latter to that extent unsupported; but

What I do claim is- 1. The combination of the annular fixed partition -D with the cylinder, ram, and die, when all are arranged in relation one to another as and so as to operate in the manner described.

2. The construction and adaptation one to the other and to the mandrel of the ram and annular partition D, as shown and described.

S. E. GHUBBUCK. Witnesses v I. D. SPAULDING, v

D. N. B. OoFFIN, Jr.

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