US1275922A - Roof connection for drain-pipes. - Google Patents

Description

2` SHEETS-SHEET l.

'Patented Aug. 13, 1918.'

c. L. HOLL/ aloof CONNECTION FOR DRAIN MP5s.

APPLlCATlON FILED MAY15, 1915.

fm2 d i l Il, A

C. L. HO'LT.

ROOF CONNECTION FOR DRAIN PIPES.

. APPucATmNFlLED'MAY15.\9\.

12755922, N Patentedmg. 13, 1918*.

2 SHEETS-'SHEET 2.

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l'tain improvements on the specific device CnAnLES L. i-ioLT, orl LAWRENCE, MASSACHUSETTS, Assief'ivoia To rioLT noon coniiEc- Tron co., or LAWRENCE, MassACi-insETTS, A ConronaTioN Cir-MassacriusETTs.

' noon Coii'nEcTron Eon Lenin-rims.

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Specicaton of Letters Patent. Pgbtvgjmbgdl Aug, 13, 191%,

Application led May 15, 1916. Serial NOQ'MUG.

To all whom t may concern:

tion.

ments 1n drain-pipe roof-connections of the type disclosed in my prior Patent #1,059,671-, and more particularly to certherein shown. y

A single roof-fitting, of the specific form '.'illustrated` in said patent, is adapted only for roofslof approximately-.a certain thickness. This fact makes itnecessary to provide diii'erent fittings for roofs of di'erent thicknesses, in which the roof-engaging means at the upper and lower ends of the fittings are positioned at different distances apart. This results in increased expense,

'11nd, in many instances, in inconvenience.

Also, if the'roof happens to be of greater v thickness than the ordinary wooden roof, the length of the casting must be substantially increased,resulting in corresponding increase ofthe weight of the casting and its cost.

Tn numerous.instances, the under surface of the roof is notl in a plane parallel to the upper surface thereof, so that in my said prior device the engaging means for the under side ofthe roof does not bear evenlyj thereon, which is to an extent objectionable.

, ln the device of said prior patent, .the roof pipe was made of brass,A principally to per- I init a soldered joint to be made between the upper end of said pipe and the roof flashing, causing a substantial increase4 in cost over an iron pipe.

The objects of my invention are to obiate the objections to the specific device of tit my said prior patent, above referred to, and to improve said device by providinga Aform of lroof connection which is adapted to lbe locked in yroofs of -vvidely-varyin thicknesses, or roofs having the under side thereof somewhat out of parallel with the upper side.

ll accomplish these objects in part by employing a clamping-ring for the under side of the roof, which is adjustable with relation to the fitting which engages the upper This invention relates to certain improveside of the roof and is adapted to be/locked by a wedging device, which permits the ring `force of its locking engagement will be n-l creased as the downward pressure thereonis increased, and also by providing a form ofconnection between thereof pipe and the roof surface, which obviates the necessity of a soldered joiiit;-these and other objects being accomplished by the means shown in the accompanying drawingsin which:--.

Figure 1 is a view, partly in elevation and partly in central vertical section, of a drain pipe roof connection illustrating an embodimenth of 4my invention.

. Fig. 2 is a similar view showing its use in connection with 'screw-threaded pipes.

. Fig. 3 is a cross sectional view onthe line 3--3 of Fig. l. Fig. 4 is a detail view of the ball-retaining ring employed in connectionwith the Wedging device illustrated in Figs. l and 3.

Fig. isa view, partly in elevation and partly in central vertical section, illustrating a modified form of my invention.

Fig. 6 is a sectional of Fig. 5.` j j According to my invention, T provide a roof-collar a, having a flanged on its upper end, said collar being adapted to beinserted through an aperture formed in the roof b, and its flangebeng arranged to rest on the upper sideofthe roof to support the same. The roof pipe c which is extended through the roof-collar, may, in the present instance, be made of galvanized iron, instead of brass, the upper end thereof being externally threaded, and the roof-collar being correspondingly threaded,` internally, and screwed onto the pipe fora suitable distance, so that the pipe c protrudes for a substantial distance beyond the upper surface of the collar. The bore-of the collar, at its upperend, is flared outwardly or beveled, to provide a seat a2, and the usual flashing d, of thin sheet metal, `having an aperture therethrough for the end of the pipe, is' placed. on the collar and its edge-portion, about its aperture, is bent down against said seat a2,

A tubular lead packing ring e is then placed on the upper side of the dashing 'about the pipe, and a nut f is screwed onto view on the line' 6 6 All ion

, formed between the flashing plate and the` the protruding fend' of the pipe, until the ring e is firmly clamped against the flash' ing, and wedged into 'the annular recess about the pipe provided by the beveled seat a2. A perfectly water-tight.l joint is thus upper end 'ofthe pipe. --The flashing `Vis adapted to extend over the flange of the col-V lar and onto the surface of the roof. as customary, so that. the tar and gravel covering may be placed thereon, to the level of the upper end of the pipe c.

While the collar a willhold-the pipe c against downward movement withrelation' to the roof, the collar, perse, is not provided with means for holding 1t against upward movement, asin'y the device of my said prior patent, and `in lieu thereof I provide an'independent clamping ring which is adjustably mounted on the pipe and is adapted to be pressed against-the under side of the roof and locked on the pipe in the position to which it is adjusted, so that the pipe is firmly held against movement eitherup or down with relation to the roof.

IVhile I 'have' previously employed set screws for holding this clamping ring in place, I have found them to be unreliable,l

for the reason that workmen, in installing the fixture, are liable not to tighten them sufficiently, sometimes because they do not have a suitable tool conveniently at hand,

for the purpose, and for other reasons, and, unless they are set up very firmly, they are liable to slip.

Toobviate these difhculties, -I have pro` .r2 at its under side -the inner surface of the ring above the flange g2 being cylindrical and adapted to receive a wedging ring 7L, having a conically-formed inner peripheral face which converges from the under sidey upward. I further provide a series of wedging devices inthe form of steel balls 7c which are disposed between the inclined surface of the ring L andthe surface of the pipe c, and provide a retaining ring i therefor, said retaining ring having openings therein in which the balls are located and being adapted to fit loosely on the pipe and within the edge of the supporting flange g2, so thatit may depend therebelow. In

vplacing these parts in position, the ring e' with the -.balls therein are placed within the ring g from the upper side of the latter, so 'that the balls rest on the flange g2 and then the wedgingring It is dropped into place 4within the ring-g, and preferably secured by screws y', so -that'the parts will not become disassociated.` When the fitting is installed, the workman places the clamping rin and its associated parts on the pipe c, which has already been set in place, and then pushes the ring g up against the roof, after which he pushes up the ring z' until the balls vare wedged firmly in between the inclined surface of the ring L and the surface of the pipe c, locking the ring g on the pipe. With vthis arrangement any tendency to push the `ring g downward will cause the balls to lockthe ring with increasing force. As a matter of additional security, the ball-hold- `ing r1ng z' is providedwith thumb screws m for holding-it against downward movement on the pipe, so that the balls will be constantly held in wedging position, and tendency to causetupward' movement of the pipeV in the roof, which might cause a strain on the screws m will immediately cause increased wedgin'g action of the balls, thereby increasing the resisting force correspondingly.

As shown in Fig. l, the internal diameter of the rings g and It is substantially greater than the external diameterof the iron pipe c, so that, in case the underside of the roof should be inclined with relation to the center line of said pipe when the latter is in position, said rings may be correspondingly tilted or inclined, so as to engage the roof uniformly, in which position'they may be locked by one or more of the wedging balls.

In Figs. o and 6,v a somewhat simplified form of adjustable clamping means for the under side of the roof, is shown, which comprises a flanged ring t, preferably made in two parts, and adapted to be bolted together, so that it may be placed in p'osition on the pipe c after all the pipe connections have been made. In this form of my invention,

transversegrooves or slots are formed in the middle of each ring section, the bottom surfaces of which are inclined so that they converge as they extend upward. A wedgeshaped key s is provided 'for each slot which is driven upwardly therein, while the ring t isheld against'the under side ofthe roof, so

that it becomes wedged between the inclined y surface of the ring t and the surface of the 1 e. p Iaid keys s arepreferably secured against slipping on the pipe. c by thumb or set screws u, so that any tendency of the pipe to move up, or of the roofA to move down, will tendto cause the collar t to ride upon the inclined outer sides of the keys, thereby increasing the .locking effect of the keys.

TByforming the collarin two sections," be readily adjusted for smallV in the direction of the inclination may be in` creased suiiiciently to permit the collar lto be tilted on the pipe to the necessary extent.

' It will be apparent that the keys or wedges may be driven in, to lock the collar to the pipe, as advantageously and easily, and will lock it as effectively, as if the collar were in a position exactly at right angles to the pipe, while, at the same time, the collar will bear uniformly against the under side of the roof.

It .will be observed that either of ther above-described forms of clamping means may. be readily placed in position, even in places somewhat difficult of access, and that, while a. hammer is preferably employed in driving in the keys, no tool whatever need be employed in connection with the installa. tion of the form rst described.

In the device of my said prior patent, the roof pipe was arranged to telescope with a cylindrical pipe having a calk joint connection with the iron drain pipe, which extended downward therefrom, so that the inlet to the drain pipe 4was of smaller internal diameter than the drain pipe. This was objectionable, for the reason that, if the roof pipe was of suiicientsize to carry away the roof water, then the drain pipe was of greater4 diameterthan necessary.

To obviate this diiiculty, I have provided a form of connection for the roof pipe which enables the latter to be used in connection with a drain pipe having the same internal diameter as the roof pipe. To this end, I provide an improved form of connection between the iron drain pipe and the roof pipe @..inwhich the stuffing boX or slip-joint connection, 'is arranged, said fitting .consisting of a pipe section o, having a stufHng box 79 in its upper end, into which the pipe c extends, to provide a slidable connection therewith, said pipe-section o being formed to taper from its upper to its lower end, and the internal diameter Vdiameter of the pipe c.

Vof the pipe section o, which will be ing and having a iange thereof being suiiicient to receive the pipe c telescopically and permit movement therein without engagin the walls of the pipe section 0,'and the ower l sufficiently to permit of its insertion in the hub of a cast iron pipeg, the internal diameter of which is the same as the internal formation of a calk joint at the lower end secure, the Walls of the lower end of thehpipe section o are thickened, eXteriorly, providing a laterally projecting rib o against which the soft solder may be forced, when the calked vjoint between the pipe section 0 and the drain; pipe is formed, and, on account of the tapering of the pipe o, the space between it and the interior wall of thehub is narrower at the top of the hub than at the bottom,

end being contracted A To assist in` the j so that, when the molten lead is poured into it, a very rigid joint will be formed. v

In; roof drainage, it is common practice to employ iron pipes which are connected by screwthreads, in lieu of the ordinary pipe having a hub at one end, and to adapt the pipe o for both forms of drain pipe, the thickened lower end of said pipe o is internally screw-threaded, 'to receive the threaded end of an iron pipe g. y

The necessity of providing two different forms of pipe-sections o, is avoided, and, at the same time, means are provided whereby a roof pipe may be employed, the internal diameter of which is at least as great as that of either the hub or the screw-threaded pipe.

v A roof connection comprising a roof-cohlar, adapted to be inserted in the roof openadapted to reston.

the upper side of the roof, to hold the collar against downward movement therein, a pipe rigidly connected to said collar, a clamping collar, for the under sideof the roof, of substantially greater internal diameter than the external diameter of the pipe and ad justable on the pipe to different positions 1 and inclinations, relative thereto,

a locking wedge adapted to be forced upwardly in the Aspace between said pipe and clamping'collar, to hold the latter against vdownward movement on the pipe from the position to which it may be ad.justed,`and a yielding connection for the lower end of said pipe.

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

Witness v L. H. HARRIMAN.

CHARLES it.y Hom, i

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