US1544763A - Pipe jointer - Google Patents

Description

July 7, 1925.

L. E. KOLLOCK PIPE JOINTER Filed May 9, 1923 Patented July 7, 1925.

UNITED STATES LEMUEL E. KOLLOCK, OF

BOSTON, MASSACHUSETTS.

PIPE JOINTER.

Application filed May 9,

To all whom it may concern:

Be it known that I, LEMUEL E. KoLLooK, a citizen of the United States, and resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in 'Pipe Jointers, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My present invention is a novel and improved form of'pipe jointer particularly in-- tended for use in connection with a jointer or runnerto be applied at the overlapping portions of pipes, water pipes, sewer pipes, or the like, so that molten lead, tar, or other sealing substance can be poured into and around the pipe joint. In the work of laying water pipes, sewer pipes, or the'like in a trench, particularly where considerable pressure and large pipes are used, often as large as four and five feet in diameter, the bell end of one pipe overlaps and partially encloses the spigot end of the adjacent pipe, the interstices being packed with oakum or the like and then a mould must be formed to permit the pouring of molten lead. This is an important and diflicult operation, as the lower part of the pipe is usually hidden from view, buried in mud and sometimes water, and the runner or temporary mould employed must fit snugly around both the circumference of one pipe and the edge of the bell in order to form a proper mould which will hold and retain the molten lead or other sealing material. Various devices have been employed to do this work and to constitute a runner or pipe joint clamp, but these have been unsatisfactory in use and my present invention aims to improve and perfect a pipe jointer or runner and clamp therefor, obviating prior difiiculties and greatly facilitating the work of pouring in the molten lead, as well as insuring a complete encircling runner and clamp, which will cover both the circumference of the spigot end of one pipe and the enclosing bell end of the adjacent pipe.

Referring to the drawings illustrating preferredembodiments of my invention,

Fig. 1 is a fragmentary end View, partly in cross-section, illustrating my runner;

Fig. 2 is a cross-sectional view on the line 22 of Fig. 1;

Fig. 3 is a plan View;

Fig. 4 is a fragmentary partly cross-sec- 1923. Serial No. 637,880.

tional View of one of the clamp brackets;

Fig. 5 is a cross-sectional view illustrating a modified form of runner; and

Fig. 6 illustrates a modified form of clamp for any runner. 1

As shown in Fig. 1, the pipe 1 has a spigot end and fits into the bell 3 of the adjacent pipe 2, these respective ends being spaced sufficiently to receive the usual oakum packing 5. This packing is wedged or fitted in and a recess 6 is left which is to receive the molten lead,tar, or other sealing substance. With the abutting ends of the pipes thus fitted, it is necessary to apply a runner around the open end of the bell to permit the pouring of the sealing material, usually molten lead. Heretofore a plain rubber clamp has been fitted, such as is indicated at 20 in Fig. 5, and as will be explained. My runner comprises a table portion, the main part 10 encircling and clamping about the pipe 1, together with an extending annular part 12 adapted to fit over and upon the bell 3. Thus my runner, designated generally at 15, constitutes a clamping member arranged around the pipe 1 and abutting against the edge 13 of the bell 3 and also the portion 12 clamping about the bell itself. Thus at the lower circumference of both pipes 1 and bell 3, I secure a complete covering, which' will prevent the molten lead from escaping, and will act as a perfectly containing mould insuring that the same runs entirely around the recess 6, thus completely filling and sealing the joint. I

Myrunner thus comprises in one portion an L -shaped body, having one part 10 to fit snugly around the pipel, with the extension 12 fitting about the bell 3. These runners are of asbestos, rubber or other yielding maserial or composition, so as to, insure a tight clamping fit in bothinstances. They are of suitable length so as to have the abutting ends approximate each other at the top or uppermost portion, leaving a recess or space 16 into which the molten lead may be poured.

' Any suitable clamp m'aybe attached to my runner as thus far described. That as herein shown consists in a metal plate 21 which will protect the yielding portion of the runner 15 at the pouring opening, this plate 21'having an extending support 22 secured to the runner by a rivet or the like 23. The runner extends upwardly, is formed with a slot 24 in which the threaded hub 25 fits, the same having a flange portion 26 to bear against the plate 21. Threaded within the hub is the shank 27 of the clamp, this clamp having a handle portion 28 for manipulation to tighten the ends of the runner and with the opposite end formed as 'anzeye 29 fitting into the corresponding eye 30 of a member 31. This member is also attached to the runner by a flange 32 secured by a rivet 33 or other equivalent means. A metal face plate 34 to protect the opposite face of the runner from the molten lead, is also provided.

As thus far described, my runner consisting in members to encircle both the bell 3 and the pipe 1, as well as to fit snugly against the edge 13 of the bellalthough this feature is not essential, since the bell 12 serves to complete the mold forming action of the runner''can be quickly encircled about a pipe, fitted in position, the hub 25 swung down into the slot 2 1 and thus connecting the opposite adjacent faces of the clamp, and thereupon manipulation of the handle 28 will tighten the clamp and runner about the pipe and bell. The open space 16 gives ample provision for the pouring in of the molten lead. As soon as the lead is cooled a slight lessening of the clamp and swinging it out of the slot 2 releases the runner and it can be withdrawn or moved forward to the next jointing action. I believe that my invention of a runner enclosing both the bell and the pipe, and clamping the runner about both bell and pipe portions, preferably by a single operation and tightened with a single clamping action is new, and I wish to claim the same broadly. As illustrated in Fig. 5, a modified form isshown. In this: form I may use the old type of runner 20, which is in general use now and is fitted about the pipe 1 and depends upon its abutting action against the edge 13 of the bell 3 to retain the molten metal as it is poured in the recess 6. I contemplate the utilization of theseold runners 20, if desired, by means of a second encircling runner 40, adapted to span, clamp, and enclose both the end portion of the bell 3 and the oldrunner 20. Preferably I make this runner 10 of sufficiently yielding material and with a slight concavoconvex bottom surface as indicated at 4:1 so that under pressure of the tightening clamp at the top 12 the runner i0 will be firmly pressed into tensioned engagement, both on the bell 3 .and the top of the runner 20, thereby insuring a tight joint. Any suitable or well known form of tighteningclamp can be employed for this purpose. Preferably I utilize a clamp such as that shown in Fig. 6 in order that the topmost part can be swung downwardly out of the way of the pouring action, as shown in dotted lines, Fig. 5. This clamp comprises a U-shaped member .5, having one lug or arm 16 pivotally secured at 4:7 to the metal face plate 3 at one end of the runner a0, and with the opposite lug or arm 4L9 threaded to receive the correspondingly threaded shank of a screw 50, which latter is adapted to have its projecting end fit into a socket 51 in alinement with the bolts 17, the socket 51 being in the same relative position on the face plate 52 at the opposite end of the runner 40. Thus after the runner 4-0 is tightened up into clamping action the clamp i5 can be swung downwardly out of the way of the lead pouring operation.

As shown in Fig. 3 I. may lit a plate 55 to one side of the runner which is of sufiicient extent to overlap the opposite end and thus insure the pouring opening 16, as partially enclosed between the edge 13 of the bell and this plate 55. The plate will slide to permit the adjusting and tightening of the clamp.

In both forms of my invention it will be appreciated that I have devised a runner which constitutes a complete encircling and protecting mold for the pipe jointing action, my runnerenclo'sing both the bell and the pipe, and thus insuring the flowing of the molten sealing liquid entirely around and underneath the pipe openings, eliminating the danger ofnot having the runner abutting against the edge of the bell, which latter defect would permit the lead to run out and escape and not effect the sealing action desired. Furthermore I utilize this double clamping action of the casing, both on the bell and on the pipe joining same, by a single clamping action, thus requiring no more time and adjustments than in fitting the old type of runner about the circumference of one pipe. 7

My invention is further described and defined in the form o-f a claim as follows:

A lead pipe runner of L-sha'ped form in its pipe engaging .surface, adapted to fit upon the bell of one pipe, the circumference of an adjacent pipe and the edge of said bell to constitute a complete mold enclosing runner, in combination with clamping means to tighten said runner about all three surfaces and a protecting lead pouring plate.

In testimony whereof, I have signed my name to this specification.

LEMUEL E. KOLLO OK.

Images