US1987920A - Joint runner - Google Patents

Description

Jan. 15, 1935. G. E. WILLIAMS JOINT RUNNER Filed March 2, 1931 A A A AYA A A A Patented Jan. 15, 1935 UNITED STATES PATENT OFFICE JOINT RUNNER George E. Williams, Minneapolis, Minn.

Application March 2, 1931, Serial No. 519,375 14 Claims. (01. 22 11s) My invention relates to joint runners for use in conjunction with pipes of the bell and spigot type and has for an object to provide a mold by which lead may be run into the joint thereof.

An object of the invention resides in providing a joint runner comprising a band formed of flexible material and having a tapered end adapted to lie against the pipe with another portion of the band overlying the same.

Another object of the invention resides in providing a clamp for drawing the parts of the band relative to one another to retain the, same about the pipe, and for clamping the parts in position.

A still further object of the invention resides in constructing said clamp with a link pivoted to one portion of the band and with a lever pivoted thereto, said lever engaging another portion of the band.

Another object of the invention resides in constructing the band with a plurality of lugs issuing outwardly therefrom and adapted tobe engaged by said lever.

A still further object of the invention resides in providing either the link or the lever with an opening therethrough, through which the free portion of the band may extend so as to adapt the band for difierent sizes of pipe.

An object of the invention resides in constructing the link with two side members and two end members, the end members serving as pivots and in pivotally connecting one of the end members to one part of the band and in pivotally connecting the lever to the other of said end members.

A feature of the invention resides in providing a joint runner in the free end of the band which may be inserted into the opening formed in said link.

An object of the invention resides in constructing the lever with two spaced side arms, each having an eye therein and pivoting said lever through said eyes on the other end member of said link, said arms being adapted to straddle the band.

A still further object of the invention resides in connecting said arms together at one end by means of a bar adapted to engage the lugs on the band and in connecting said arms together at their opposite ends through a Urshaped thumb piece serving as a stop for limiting the movement of said lever.

An object of the invention resides in disposing the pivots of said link and lever and in disposing said bar and thumb piece so as to form an over-center device adapted to maintain the bar in engagement with the lug when the lever is closed.

A feature of the invention resides in providing groups of lugs for engagement withv said lever, each of the lugs of a group being for a particular type of pipe and each group being for a particular size of pipe.

Another objector the invention resides in applying to corresponding lugs of each group, some identifying characteristic such as constructing the lugs of different metals or in different colors.

An object of the invention resides in constructing the band with a core formed of a plurality of layers of material arranged in overlying position to give the core a rectangular cross section and in further providing a cover encircling the core for protecting the same.

Another object of the invention resides in constructingthe core from a single sheet of material lapped to form the various layers thereof.

An object of the invention resides in forming a sprue along'one side of the portion of the band and inattaching a sprue block in proximity thereto and in further providing said block with a sprue lying in continuation of the sprue in said band.

Other objects of the invention reside in the novel combination and arrangement of parts and in Y the details of construction hereinafter illustrated and/or described.

In the drawing;

Fig. 1 is a perspective view of a joint runner applied to a pipe and illustrating an embodiment of my invention.

Fig. 2 is a fragmentary vertical sectional View taken on line 2- 2 of Fig. 1.

Fig. 3 is an elevational view of the joint runner shown in Fig. 1 detached from the pipe and with the clamp in open position.

Fig. 4 is a cross sectional view of the band drawn to a larger scale.

Fig. 5 is an elevational view of one of the lugs used with the invention detached from the band.

In the use of joint runners, considerable difficulty has been encountered in preventing leakage of the lead. Furthermore certain of such devices had to have relatively large sprue holes so that the amount of lead to be cut away from the finished joint was considerable. In addition, trouble was had with the band from which the runner was constructed, loosing its rectangular form. The instant invention overcomes these difficulties by providing an extremely simple and efiective runner which may be readily applied to all sizes of pipes and slidably drawn about the same to effect a tight seal and which may be provided with a relatively small sprue hole and which'will. retain its form indefinitely.

For the purpose of illustrating the application of my invention I have shown the adjoining ends of two sections of pipe and 11 which are of the bell and spigot type. The spigot end 12 of the pipe section 10 has been illustrated as inserted within the bell 13 of the pipe 11, which as customary, is slightly enlarged to provide a space 14 between said bell and the adjoining pipe section 10 in which a suitable packing 15 may be driven and in which the lead used for sealing the pipe may be poured.

The joint runner proper consists of a band 16 of flexible material, which may be constructed as follows: This band is constructed with a core, 17 and a covering 18 encircling the same and protecting said core and assisting in holding the core in proper position. The core 1'1 is con:- structed from a sheet 19 of avv suitable flexible material such as asbestos fabric, or other asbestos composition, which sheet is lapped back and forth to form a plurality of layers 20 overlying one another. At suitable intervals between the various layers 19 is placed an uncured or partly uncured gum, which is adapted to be vulcanized when the band is heated so as to bind the layers of the band together. After the core 17 has been built up, another sheet of similar material is Wrapped about the core to form the covering 18 which has disposed between the layers thereof and between it and the core 17, suitable strips of uncured rubber the same as in the core. The entire band is then heated to vulcanize the rubber and bind the parts together. In the drawing, the core and covering has been shown as formed of a single sheet of material, tho separate pieces may be used and different kinds of materials employed. In the construction of the band 16, the various layers 20 may be formed of a single sheet of material as described or the same may be constructed from individual strips laid one upon the other and vulcanized or otherwise secured together. If desired, the covering 18 may be dispensed with and the core 1'7 used without a covering. Instead of vulcanizing the parts of the band together, the layers may be sewed, stitched, wired, stapled, or otherwise secured together and reinforcing members may be imbedded within the same.

Theband 16 comprises two portions indicated at 21 and 22 ofwhich the portion 21 is wrapped about the pipe on which the runner is to be applied and theportion 22 is disposed in overlying position upon the portion 21. The portion 21 is tapered as indicated at 23 to a feathered edge 24' at the extreme end thereof so that when the portion 22 is wrapped about the portion 21, a tight joint is eiiected between the runner and the pipe proper. The tapered portion 23-may be formed by skiving or cutting down the core 17 and the covering 18 wrapped about the same after the tapered portion has been formed, or if desired, a finished band may be formed complete in suitable lengths and the same out off or skived after construction. In such case, the out part of the band, which would be the exterior thereof might be left raw or covered with a separate covering conforming to the shape of theband. Where the tapered portion 23 is covered, a spiral covering may be used which would be placed on the core after the same has been properly shaped.

At suitable intervals along theouter surface 35 of the band 16 are provided groups of lugs, each group containing three lugs 44, 45 and 46, shown in detail in Fig. 5. These lugs may be formed from wire having a hook 47 bent near one end thereof and being formed with screw threads 48 at the other end whereby the lug may'bescrewed into the core 17 of: the band 16 so as to hold the same rigidly attached thereto.

For the purpose of drawing the band snugly about the pipe, the portion 22 is tensioned relative to the portion 21. This is accomplished through a clamp and tensioning device indicated in its entirety at 25. This device comprises a lever 26 and a link 27 pivoted to one another and to the portion 21 of the band 16, said lever being adapted to engage the portion 22 and to move the same relative to the portion 21 and to clamp the parts together at any adjusted position thereof.

The link 27. as best shown in Fig. l is constructedof wire or rod and is formed with two side members 28 and 29 and with two end members 30 and 31 bent into a rectangular frame as shown, to leave a space 32 within the same. The ends of the wire may be welded together at any suitable locality and preferably in the end member 31 to form a unitary and rigid construction. The link 27 is pivoted to the portion 21 of the band 16 through a strap 33. This strap is doubled back upon itself to form a loop 34 for the reception of the end member 30 of said link and is secured to the outer peripheral surface 35 of the band 16 at a locality thereon adjoining the beginning of the tapered portion 23 of said band. The strap 33 is secured to the band 16 through a number of wood screws 36, which are screwed into the core 17 of the band. Rivets or bolts may also be used for this I purpose if desired.

The lever 26 is constructed from wire or round rod similar to the link 27 and consists of two spaced arms 37 and 38 which are formed intermediate their ends with eyes 40 adapted to receive the end member 31 of the link 27' for pivotally connecting said lever to the link. The eyes 40 are disposed nearer one end of the lever than the other so as to provide suitable leverage in. the tensioning of the band as will presently become apparent. The shorter ends of the arms 37 and 38. are connected together tlnough a bar 41 which is adapted to engage any of the lugs 44, 45 or 46; This bar is formed at the center thereof with a crotch 42 which engages within the. hooks 4'7 of said lugs and holds the lever in central relation with respect to said lugs. lfhe longer ends of the arms 37 and 38 are connected together through a U-shaped thumb piece 43 which is adapted to straddle the band proper when the lever is in closed position and which engages the outer surface 35 of the band and limits the movement of the lever. In the construction of the lever 26 from wire or rod, the same isbent into the desired form and the ends of the device are welded together, the joint being preferably made in the thumb piece 43.

The opening 32 within the link 2'7 is of such a width. as to freely receive the free portion 22 of the band 16 which in the use of the device is inserted through the same. The arms 37 and 38 of the lever 26 are sufficiently spaced so that the said arms straddle the band when the clamp has been. applied to the device and is closed. In. applying the device to the pipe, the tapered portion 23: is first laid about the exterior of the pipe in proximity to the end bell 13 as shown in Fig. 2 and the band Wrapped about the pipe. The portion 22 is next caused to overlie the tapered portion 23 and in applying the lat-- ter portion, the same is inserted through the opening. 32 of the link 19. The lever 26 is then swung outwardly as shown in Fig. 3 and the bar 39'brought into engagement with the proper lug, thenotch 42 resting in the hook 47 of said lug. By swinging the lever 26 in a direction toward the outer surface 35 of the band 16, the free end 22 of the band is tensioned and the band drawn snugly about the outer surface of the pipe. The arms 37 and 38 of lever 26 are so constructed that when the thumb piece 43 engages the outer surface 35 of the band 16 that the bar 41 lies out of alignment with the two pivots 30 and 31 of the link 27, thereby forming an over-centered device by means of which the parts are held in locked position. The thumb piece 43 serves as a stop for limiting the movement of the lever to such position and when the clamp is closed, the arms 37 and 38 and said thumb piece straddle the end 22 of the band.

A pipe of the bell and spigot type, such as used in the plumbing trade, comes in a number of different sizes and each size of pipe comes in diiferent weights. These particular weights referred to in the trade as ferrules, standard pipe and extra heavy pipe. The lugs 44, 45 and 46 are so positioned that one lug serves to hold the device applied to each particular size and style of pipe. In order to assist the plumber in determining the proper lug, the lugs are preferably identified in some suitable manner. These lugs may be constructed of different material or colored in a distinctive manner. For the purpose of illustration, the lugs 44 which are used for ferrules are japanned or painted black, the lugs 45, which are used for standard pipe are painted aluminum or silvered, while the lugs 46 which are used for extra heavy pipe are bronzed or constructed of brass. In order to properly use the invention, it is merely necessary to apply the bar 41 to the proper lug and force the lever 26 into closing position. The band will then be properly tensioned about the pipe and without placing unnecessary strain upon the same.

For the purpose of pouring the lead into the space 14 within bell 13, the band 16 is formed in the portion 21 thereof with a sprue 49. The sprue 49 is disposed in one of the lateral surfaces 50 of the band which is the surface placed adjacent the bell 13 on the adjoining pipe section. This sprue tapers outwardly as shown in Figs. 2 and 3 and is formed by cutting a groove or notch in the core 17 which extends completely through the covering 18 of the hand. For the purpose of reinforcing the band at the locality of the sprue 49, a sprue block 51 is employed which is secured to the outer surface 35 thereof and which is held in place by means of three screws 52, screwed into the core 17 of the band. Sprue block 51 extends outwardly beyond the bell 13 and is formed with an opening 53 constituting a continuation of the sprue 49.

In the use of the invention, the band is placed about the pipe with the sprue 49 extending upwardly and the band tensioned in the manner described. The band is then driven against the end of the bell and the runner is then ready to receive the molten lead or solder. The solder is next poured into the sprue 53 and flows within the space 14 within the bell 13, filling the same and forming the joint. Due to the fact that the sprue block 51 extends outwardly beyond the bell of the pipe, the portion thereof about the opening 15 operates to direct the molten lead into the sprue 49 and prevents the lead from being spilled out of the mold. After the lead has been sufficiently cooled, the runner may be rapidly removed by unloosening the lever 26 and disengaging the bar 41 from the particular lug with which the same was engaged, thereupon the free'end 22 of the band 16 may be slid through the opening 32 in link 27 and the parts removed. Thereafter the metal formed by the sprue 49 may be chiseled away and the lead caulked to form a fluid-tight joint.

My invention is highly advantageous in that the runner may be quickly and accurately applied to the pipe to form the mold for casting the lead in the joint. By means of the identifying characteristics of the lugs, the proper lug can be quickly determined. The clamp is constructed so that the same is extremely rigid and substantial and so that the same will provide sufiicient force to draw and hold the runner snugly about the pipe. position, the over-centered construction holds the parts locked in place. By means of the construction of the core of the band, the same always remains rectangular so that a planiform end wall is provided for the mold. Due to the construction of the band with laminations, the band bends freely to conform to the curvature of the pipe and has considerable lateral rigidity to maintain the same in contact with the end of the bell. By the use of the sprue block, a sulficiently large sprue may be formed without materially weakening the band and at the same time the sprue block greatly assists in pouring the lead into the sprue.

Changes in the specific form of my invention as herein disclosed may be made within the scope of what is claimed, without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

l. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe and having two juxtapositioned portions, one

adapted to overlie the other means for drawing said portions about the pipe including a looped link having an opening therethrough and a lever pivoted to said link, said link being pivoted to the underlying portions of said band, means formed on the overlying portions of the band for engagement with said lever, said overlying portion of the band passing through the opening in said link.

2. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe and having two portions, one adapted to overlie the other, a looped link having an opening therethrough and formed with end members serving as pivots, means engaging one of said end members and attached to the underlying portion of the band for pivotally connecting said link thereto, said overlying portion of the band passing through the opening in said link, a lug on the overlying portion of the band and a lever pivoted to the other end member of said link for engagement with said lug for drawing the band about the pipe.

3. A joint runner comprising a band of flexible material adapted to be Wrapped about a pipe and having two portions, one adapted to overlie the other, a looped link having an opening therethrough and formed with end members serving as pivots, means engaging one of said end members and attached to the underlying portion of the band for pivotally connecting said link thereto, the overlying portion of the band passing through the opening in said link,-a lug on the overlying portion of the band and a lever comprising spaced side arms pivoted to the other When the clamp is in end-1 member of said link and having a, portion for engagement: with. said. lug to draw the portions of the band about the pipe, said side arms being adapted to straddle the overlying, portion of the band.

4. A joint runner comprising, a. band of flexible material adapted to be wrapped about a pipe and having two portions, one adapted to overlie the other, av looped link having an opening therethrough and formed with end members serving as pivots, means engaging one of said end members and attached to the underlying portion of the band for pivotally connecting. said link thereto, said overlying portion of the band passing through. the opening in said link, a lug on the over-b ing portion of the band and a lever comprising spaced side arms, each formed with an eye pivoted to the other end member of said link and having a bar connecting said arms at one end for engagement with said lug. todraw the portions of the band about the pipe and a thumb piece connecting the other ends of said arms for manipulating said lever, said arms being adapted to straddle the overlying portion of the band.

5. A. joint runner comprising a band of flexible material adapted to be wrapped about a pipe and having two portions, one adapted to overlie the other, a link consisting of two arms adapted to straddle the overlying portionof. said band, means for pivoting one end of said arms to the underlying, portion, a member on the overlying portion of said band disposed in proximity to said link, and a lever pivoted to said link at the other ends of said arms and adapted to engage said member for drawing the portions of the band together.

6. A joint runner comprising a band of flexible material adapted to be wrapped about ,a pipe and having two portions, one adapted to overlie the other, a link, means for pivoting said link at one end to the overlying portion of said band, said link having a portion overlying the underlying portion of the band, a lever pivoted to said link at its other end, a member on the overlying portion of the band disposed in proximity to said link, means on said lever for engaging said member to draw the portions of the band together upon movement of said lever, said lever having an arm extending outwardly therefrom, and a cross piece on said arm adapted to engage said band and forming a stop for limiting the movement of said lever with respect to said band.

7. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe and having two portions, one adapted to overlie the other, link, means for pivoting said link at one end to the underlying portion of said band, a lever, means for pivoting said lever to said link at its other end, a member on the overlying portion of said band disposed intermediate the pivots on said link, means on said lever for engagement with said member, and a stop on said lever for limiting the movement of said lever with respect to the band.

8. A. joint runner comprising aband of flexible material adapted to be wrapped about a pipe and having two portions, one adapted to overlie the other, a link, means for pivoting said link at one end to the underlying portions of said band, said link having an end member at its other end, a lever comprising spaced side arms, eachformed with an eye pivoted to the end member of said link, said lever havingv a bar connecting said arms, and a memberon the overlying; portion of said band: for engagement with said bar.

9. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe and having two juxtaposed portions one adapted to overlie the other, means connected thereto for drawing said portions together, said means including a link, means connected to one end of said link and to said underlying portion, a lever pivoted to the other end of said link and having a portion for engagement with a member fast on the overlying portion of the band in proximity to said link, an arm on said lever having a stop for engagement with said band, said stop being adapted to engage the band when the portion of said lever engaging said member has passed the line connecting the pivots of said link.

10. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe, a portion thereof being in contact with the pipe and another portion thereof overlying the first named portion, a lever for tensioning the overlying portion, means on the overlying portion of the band for engagement with said lever, a link having an opening therein through which the overlying portion of the band may extend, means for pivoting said link to the first named portion of the band, and means for connecting the link to said lever.

11. A joint runner comprising a band of flex-- ible m terial adapted to be wrapped about a ipe and. having wo juxtapositioned portions, means for drawing said portions about the pipe including a link and a lever, a pivot connecting said link and lever to one another, means for pivotally connecting said link to one of the portions of the band, 9. lug on the other portion of said band, a member on one side of the pivot of said lever for engagement with the lug and a-stop on the other side of the pivot of said lever engaging said band for limiting the swinging movement of said lever whereby the lever Will be held in engagement with the lug. 12. A joint runner comprising a band of flexible material adapted to be wrapped about a pipe and to lie against the bell of an adjoining pipe, a sprue block constructed of flexible material and secured to said band and extending outwardly beyond said bell, said sprue block having a sprue extending across the same and communicating with the space between the bell and pipe, and means engaging the band for holding the band in place upon the pipe.

13. In a joint runner, a band having a core comprising a plurality of superimposed layers constructed from a sheet of material, said band being adapted to be wrapped about a pipe with all of said layers paralleling the peripheral surface of such pipe, said core being formed by folding the material back and forth upon itself in zig-zag fashion, layer upon layer, with all of the folds disposed at the lateral surfaces of the core, and means for holding the band in position upon a pipe.

14. In a joint runner, a band having a core comprising a plurality of superimposed layers and adapted to be wrapped about a pipe with allof said layers paralleling the peripheral surface of such pipe, some of the layers being integral with others, said integral layers consistingof folded sheet material, the folds between integral layers being all disposed at the lateral surfaces of core, and means for holding the band in position. upon a pipe.

GEORGE E. WILLIAMS.

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