US2757452A - Lead extractor for pipe joints - Google Patents

Description

F. D. BARNE5 LEAD EXTRACTOR FOR PIPE JOINTS Filed July 28, 1955 United States Patent LEAD EXTRACTOR FOR PIPE JOINTS Frank D. Barnes, Ironton, Ohio Application July 28, 1953, Serial No. 370,710

ll Claim. (Cl. 30-168) This invention relates to a lead extractor and has for an object to provide an improved plumbers tool for extracting lead, caulking or packing from the joints of soil pipes or analogous joints.

It is an object of this invention to provide an improved plumbers tool for extracting lead from a pipe joint by driving this tool into the pipe joint and cut out the lead in the joint piece by piece around the joint until the entire joint has been removed by means of this invention.

Still a further object of this invention is to provide a single one piece tool in the nature of a channel shaped chisel having a hammer receiving surface at the other end thereof, so that it may be driven into the lead packing by means of a hammer, and receive the cut out portion of the lead packing within the channel and the chisel from whence it may easily be removed after the tool has been removed from the joint.

Briefly, the lead extractor tool of this invention is made of a hard metal and includes a shank handle having a hammer or jar receiving surface at one end thereof, and at the other end is provided with a channel shaped chisel end whose longitudinal axis is ofi set to the axis of the handle shank, and which terminates in a beveled cutting edge with the points at the sides of the channel, and the cutting surface beveled backwardly toward the bight of the channel, so that the channel may be placed against the soil pipe adjacent the lead packing in the joint and then driven into the lead packing by hammer or jar blows struck against the other end of the handle shank, thus, driving the channel into the lead packing, cutting out a portion of the lead packing, which is squeezed into the channel, and then removing the tool, so that the lead in the channel may be removed, then repeating the operation about the joint until all the lead is removed, thus, enabling the joint to be separated as desired.

With the foregoing and other objects in view, this invention comprises the combination, construction and arrangement of parts hereinafter set forth, claimed and disclosed in the accompanying drawings, wherein:

Fig. l is a side elevation of the channel shaped chisel and cutting edge.

Fig. 2 is a longitudinal, sectional, elevational view of the Cutting head as seen on line 22 of Fig. 3.

Fig. 3 is a bottom plan view of the chisel cutting head.

Fig. 4 is a vertical, sectional, elevational view on line 4-4 of Fig. 1.

Fig. 5 is an overall general perspective showing the chisel driven into the lead or caulked joint to be removed.

Fig. 6 is a view similar to Fig. 5, but showing the chiseled working head withdrawn from the joint and exposing the portion of lead or caulk that has been removed by the tool.

There is shown at 10 the lead extractor of this invention as having a handle shank 11, here shown as octagonal in cross section having a hammer blow or jar receiving surface 12 at one end thereof, and connected by an angle portion 14 to a cutting head generally shown at 15. This 2,757,452 Patented Aug. 7, 1956 cutting head 15 is U or channel shaped as clearly brought out in Figs. 3 and 4 with the sides 16 of the U or channel extending away from the bight 17 in a direction on the outside of the angle between the head 15 and the handle shank 11.

At the extreme end of the cutting head 15, there is providing a beveled chiseled cutting edge 18 which bevels backwardly from the points 20 on the side 16 of the chisel cutting edge 21 extending across the end of the bight 17.

In operation, the lead extractor 10 is held by its handle shank 11 with its cutting head 15 placed parallel to and in contact with the outer circumference of the male pipe 22, which was secured in the female pipe 23 at the joint 24 by means of the lead or caulked packing 26. With this invention, it is possible to easily remove this lead or caulked packing 16, so as to separate the soil pipes 22 and 23 from each other, and thus, break or separate the joint 24. This is done by placing the tool or lead extractor 11 in the position shown in Fig. 5, as just described, and hitting the hammer receiving surface 12 with a hammer or other suitable jar, so as to drive the working head 15 into the packing 26. As the working head 15 enters into the packing 26, the sharp points 29 will guide it along the male pipe 22 and the sharpened edges leading from the points 20 to the chisel sharpened edge 21 of bight 17 will cut into the packing 26 removing a slug 27.

After the working head 15 has been driven entirely through the packing 26, the tool is removed and the slug 27 is then knocked out from the channel or U, and then the tool is used in a similar manner to remove an addi tional slug working around the circumference until all the packing 26 has been removed.

Obviously, in view of the open end of the working head 15 where it is joined by the angle portion 14 to the shank 11, it is not necessary to remove each individual slug, but as soon as the tool has been driven in to pick up a slug or packing, it may be withdrawn, then moved circumferentially around to a distance equal to the width of the working head, and then driven in again, each new slug merely pushing each previous slug along the working head, and when the working head is full, the end slugs will drop successively out of the open end of the working or cutting head, thus, speeding up the operation of the tool.

While the device has been shown and the structure described in detail, it is obvious that this invention is not to be considered as being limited to the exact form disclosed, and that changes in detail and construction may be made therein within the scope of What is claimed, without departing from the spirit of this invention.

I claim:

A lead extractor for extracting lead packing from soil pipes and analogous joints comprising a hard metal tool having a handle shank with a hammer receiving surface at one end, and a channel shaped chisel and cutting head, U-shaped in cross section, extending at an obtuse angle from its other end, the end portion of the bight of the U being slightly curved inwardly away from the sides of the U, said sides extending in substantial parallelism to each other and meeting said bight at a sharp obtuse angle, the open face of the U being diametrically opposed to the direction in which the handle extends, the ends of the sides of the U extending outwardly beyond the end of the bight of the U to form said chisel and cutting head, the U and the sides thereof forming said cutting tool, said sides and said bight end being bevelled, whereby the cutting head and chisel may be held with the open face of the U downwardly against the pipe at the joint, with the obtusely-angled handle shank extending away from the pipe to receive a hammer blow to cause said chisel 3 and cutting head to be driven into the lead packing to cut a slug therefrom and allow the slug received in the open U of said chisel to be squeezed between the sides thereof so that said slug maybe extracted from said joint.

References Cited in the file of this patent UNITED STATES PATENTS 376,136 Burrowes Ian. 10, 1888

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