US559763A - John anderson - Google Patents

Description

J. ANDERSON. TOOL FOR EXPANDING ENDS 0]? LEAD PIPES.

(No Model.)

Patented May 5, 1896.

AN DRE" 8 GRAHANLPHOTO-LYTHO WASMHFIUNJ C UNITED STATES JOHN ANDERSQN, OF PORTLAND, CONNECTICUT, ASSIGNOR F ONE-HALF 'IO CHARLES II. BELL, OF SAME PLACE.

TOOL FOR EXPANDING ENDS OF LEAD PIPES.

SPECIFICATION forming part of Letters Patent No. 559,?63, dated May 5, 1896.

Application filed February 17, 1896. Serial No. 579,614. (No model.)

To (@115 whom, it may concern.-

Be it known that I, J OHN Annnnson, of Portland, in the countyof Middlesex and State of Connecticut, have invented a new Improvement in Tools for Expanding the Ends of Lead Pipes; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear,

to and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, aview in side elevation of one form which my improved tool may assume Fig. 2,

K 5 a view thereof in longitudinal section; Fig. 3, a detached broken view showing one of the dies and one of the levers in inside elevation; Fig. at, a view of the device in transverse section on the line 4 at of Fig. 2.

My invention relates to an improved tool for expandin g the ends of lead pipes preparatory to coupling them, and particularly to their use in metal pipe-joints of the general class to which the pipe-joint shown and described in Patent No. 535,236, granted to me under date of March 5, 1895, belongs.

The object of my present invention is to produce a simple, compact, convenient, and accurate tool for expanding the ends of lead pipes for the general purposes described.

\Vith these ends in view my invention consists in a tool having certain details of construction and combinations of parts, as will be hereinafter described, and pointed out in 5 the claims.

In carrying out my invention, as herein shown, I employ two corresponding semiconical partially hollow dies A and A, respectively, pivoted forward of their longitudinal centers by means of pivots a (L to the short outer ends 13 B of two levers having long handle ends 13 B and pivoted together by means of a pivot B. The semiconical die A. is provided at its rear end with an inwardlyprojecting slightly-bowed hooked operatingrod A which passes freely through a transverse hole 5, formed in the outer end of the handle end B and hooks into a perforated lug b, formed at one edge of the inner face 5 of the outer end of the handle end 13. On

the other hand, the semiconical die A is provided with a corresponding inwardly-projecting slightly-bowed hooked operating-rod A passing freely through a transverse hole 12 formed in the outer end of the handle end 13 and hooking into a perforated lug 11 formed at one edge of the inner face of the handle en d I3 These lugs are located upon opposite edges of the said handle ends, as shown in Fig. 4, so that the hooked rods will clear each other. A spiral spring 0, interposed between the handle ends of the two levers, exerts a constant effort to throw them apart, whereby the flat faces of the dies are brought into contact. The rods A and A it will be observed, are on the opposite side of the fulcrunnpivot B from the pivots a a.

In using the device its semiconical dies are inserted into the end of the pipe to be expanded, after which the handle ends of the levers are drawn together against the tension of the spring 0 by closing the hand upon them, whereby the dies are forced apart through the medium of their operating-rods A and A The expansion of the pipe will not be done all at once, probably, but by gradually working the dies into it, and repeating the operation by separating them by closing the hand upon the handle ends of the levers.

It is apparent that in carrying out my invention some changes from the construction herein shown and described may be made. I would therefore have it understood that I do not limit myself to the exact form set forth, but hold myself at liberty to make such changes as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a tool for expanding lead pipes, the combination with two corresponding semiconical dies, of two levers to which the said dies are respectively pivoted, and means con necting the rear ends of the dies with the opposite levers respectively.

2. In a tool for expanding lead pipes, the combination with two corresponding semiconical dies, of two levers to the short outer ends of which the said dies are respectively pivoted, and two operating-rods respectively projecting inward from the inner ends of the dies, and connected with the handle ends of and passing through the handle ends of the the opposite levers so that each die is conadjacent levers, and connected with the said neeted with the short end of one lever, and ends of the opposite levers.

the handle end of the other lever at points In testimony whereof I have signed this 15 5 opposite the fulcrum of the levers. specification in the presence of two subscrib- 3. In a tool for expanding lead pipes, the. ing witnesses. combination with two corresponding senn- JOHN ANDERSON.

conical dies, of two levers to the short ends of which the said dies are respectively pivoted, Witnesses:

10 and two operating-rods respectively extend- FRED O. EARLE,

ing' inward from the inner ends of the dies, GEO. D. SEYMOUR.

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