Pipe sleeve

Application filed December 18, 1929. Serial No. 415,095.

The present invention relates to improvements in pipe sleeves and methods of mounting same, and relates more particularly to an improved construction and method whereby ⁵ steam and other pipes may be properly alined through the floors and ceilings of buildings.

An object of the invention is to provide an improved pipe sleeve which will lend itself peculiarly to setting in a cement or ¹⁰ concrete flooring construction.

A further object of the invention is to provide an improved method whereby the sleeves in the floors and ceilings of buildings may be made to take up proper positions in registry ¹⁵ with one another to facilitate the mounting of piping through a building, to enable this work to be done more quickly and to secure this result with great and uniform precision.

With the foregoing and other objects in ²⁰ view the invention will be more fully described hereinafter and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols re²⁵ fer to like or corresponding parts throughout the several views:

Figure 1 is a vertical sectional view taken through a fragment concrete form and showing a device embodying my improvements in ³⁰ place before the pouring of cement or concrete ;

Figure 2 is a similar view after the cement or concrete flooring has been poured;

Figure 3 is a vertical sectional view taken ³⁵ through a device embodying my improvements in a third stage of the method showing the heads or plugs removed and the sleeves ready to receive a pipe;

Figure 4 is a view similar to Figure 3 with ⁴⁰ a pipe and pipe joints in place; and

Figure 5 is a fragmentary vertical section through a building showing the positioning of piping through the floors and ceilings.

Referring more particularly to the draw⁴⁵ ings, 10 designates a form for the cement or concrete. Initially an opening 11 is made in the form 10 and through this opening 11 a bolt or threaded stem 12 may be projected. The stem 12 is shown as provided ⁵⁰ with a beveled smooth nose 13 in advance of threads, as 14. The beveled nose 13 will facilitate the entrance of the stem .12 through the opening 11.

At or near the lower extremity of the threads 14, or at or near the base or wider 55 portion of the nose 13, a transverse perforation 15 is shown as provided. The nose 13 may, as shown, be flat-tipped in shape to avoid a sharp point or its sticking into the material of the form 10. Made with or '60 secured to the upper end of the bolt 12 is a plug or head 16 shown as of a- greatly increased diameter over the opening 11 and as having external threads to cooperate with internal threads 17 upon the lower end of a 65 pipe sleeve 18. A winged or other nut 19 is shown as threaded upon threads 14 of the bolt 12 and a washer 20 is shown as interposed between the nut 19 and the form boards 10. 70

The upper end of the pipe sleeve 18 is shown provided with internal threads 21 to receive the plug or head 22 which is shown as externally threaded. This latter plug 22 is shown as provided with a projecting up- ⁷⁵per portion 23 adapted to lie above the upper end of the pipe sleeve 18 and the portion 23 of the plug 22 is shown as provided with polygonal faces to receive a wrench or other tool whereby a rotary motion may,'⁸⁰if desired, be imparted to the plug 22 in the act of screwing it into and out of place in the sleeve 18.

A V-shaped recess or notch 24 is shown as provided in the upper end of the plug 22. ⁸⁵This V-shaped recess or notch 24 may be of a shape to agree substantially with the lower. conical end portion of the plumb bob 25 suspended on the cord or other flexible connection 26. Instead of the V-shaped recess' ⁹⁰or notch 24 any suitable mark may be made on the upper end of the plug 22 to cooperate with a plumb bob, as 25, for centering another sleeve with the sleeve 18. A cement or concrete flooring is indicated at 27 and ⁹⁵plastering is indicated at 28.

In Figures 4 and 5, 29 designates a ceiling plate shown as having one end screw threaded, as at 30, to screw into threads, as 17, at the lower end of the tubing or sleeve ¹⁰⁰

1,908,796

18. A gasket may, if desired, be provided between the shoulder 31 of the ceiling plate 29 and the adjacent end of the pipe sleeve 18. If desired such gasket, if one is provided, ⁵ and the shoulder 31 may not be fitted close to the unfinished ceiling but space may be afforded in which to receive plastering, as 28, so as to give a neat fit and a good appearance, and after the plastering in the space above ¹⁰ the shoulder 31 has been finished a wrench may be engaged to the nut flange of the ceiling plate 29 so as, if desired, to bring the gasket, if one be used, and the shoulder 31 more snugly against, the ceiling. It ¹⁵ is to be understood, however, that the gasket; if brie be employed, and the ceiling plate 29 may be fitted snugly against an unfinished ceiling.

'When desired the plug 22 may be removed ²⁰ from the upper end of the tubing or sleeve 18 Arid a floor plate, as 32, may be put in place. This floor plate 32 is shown as provided with a threaded part 33 for screwing into the threads 21 at the upper end of the tubing or ²⁵ sleeve 18. A gasket 35 may be provided between the shoulder 34 of the floor plate 32 arid the adjacent end of the tubing or sleeve 18. The gasket 35, if one: is provided, and the shoulder 34 may not be fitted snugly ³⁰ against the unfinished cement or concrete flooring 27, but sufficient space niay be afforded to receive a finishing coat, such finishing coat being worked into the space be.. heath the gasket 35, if such gasket be prb³⁵ vided, and the shoulder 34. Or the gasket 35, if such gasket be provided, and the shoulderfid niay be fitted snugly against the unfinished cement or concrete flooring 27.

. - The ceiling and floor plates are shown as '⁴⁰ provided with nut flanges 36 for the erigageriient of a wrench whereby the plates may be turned securely into place arid tightened whenever desired.

Figure 1 shows the initial position of the ⁴⁵ parts before the pouring of the cement or concrete. The lower plug 16 is shown as screwed into the pipe sleeve and the bolt 12 inserted through the opening 1.1 in the ce. ment .or concrete form 10, the pipe sleeve ⁵⁰ 18 being shown as resting upon tile upper side of the f brm 10. The washer 20 has been slipped over the bolt 12 and up against the form 10 arid the nut 19 run upon the threads 14 up against the washer 20 locking the pipe ⁵⁵ sleeve iri place.

After the parts are in place, with the up- per plug 22 in the pipe sleeve, the cement or concrete 27 may be poured in place and about . the sleeve 18. The upper plug 22 will pre⁶⁰ vent the cement or concrete from getting into the sleeve. After the concrete 27 is set, the nut 19 niay be run off the bolt 12, the washer ' 20 removed, and the cement or concrete form ,,. _ boards 10 pulled downwardly disengaging ⁶⁵ the same from the bolt 12. A pin or other instrument may then be inserted in the perforation 15 and the bolt 12 rotated whereby to screw the lower plug 16 out of the sleeve 18. When the upper plug 22 is screwed out of the sleeve the condition of the parts will be as 70 shown in Figure 3. After the removal of the plugs 16 and 22 the pipe shown at 37 in Figures 4 and 5 may be placed through the sleeve 18..

The plumb bob 25 will, whenever desired, 75 have been suspended into the V-shaped recess or notch 24 or above the mark which denotes the center of the plug 23, for the purpose of determining the position of an upper or lower pipe sleeve. If, for instance, the lower pipe ⁸⁰sleeve 18 is in place.and it is desired to determine the position of the upper pipe sleeve the plumb bob 25 will be so suspended that its lower end will accurately fit the notch 24 or the point of the plumb bob will be directly ⁸⁵above the mark which denotes the center of the plug 23 and the cord 26 will mark the proper position of the corresponding pipe sleeve for the floor above.

By reason of the arrangement, this pipe 37 ⁹⁰will be freely received through the vertically aiming sleeves 18 in the various floors of the building; .

It will be understood that, if desired, portions of the sleeve 18 may be of heavier nia- ⁹⁵terial than other portions of the sleeve, for instance the portions of the sleeve 18 which are provided with screw threads may be made heavier or thicker than other parts of the sleeve. . ¹⁰⁰

My improved construction arid method of procedure constitute marked improveriieiits over prior constructions. In. such prior constructions of cement or concrete floorings, a. wooden, form or flooring is put in position. ¹⁰⁵and . at the points where it is. desired, that openings be left for the passage bf st en in or other pipes in the finished cement or concrete flooring galvanized sleeves have been nailed to the wooden form or flooring; these galva- ^unized sleeves being.provided with outwardly extending flanges by means of which they were nailed to the wooden form or flooring.

The ordinary method of making Cement or concrete flooring is tb pour .cement or concrete onto the wooden form or flooring, lay metal lathing, pour inote cement br cbhcfefe, and finally put on the finishing.coat. When the cement or concrete floor has set the wooden form or flooring is removed from underneath. When the wooden form or flooring is pullbd down the galvanized sleeves which had been nailed to this wooden form or floor may be held in place by,the hardened cement or concrete, or the galvanized sleeves may be ¹pulled down with the wooden form or'.floor to which they have been nailed,

After the wooden, form or floor has been removed metal sleeves have been inserted into place within the galvanized sleeves wh'eVe the ¹

1,908,796 galvanized sleeves have been retained by the hardened cement or concrete, or in the hole formed by a galvanized sleeve in the cement or concrete flooring where such galvanized sleeve has been removed in pulling clown the wooden form or floor.

At present while the place at which a galvanized sleeve should be nailed to the wooden form or flooring may be determined with some degree of correctness there is no method of determining such place with absolute certainty, and a galvanized sleeve may be thrown off proper center in the operation of nailing it to the wooden form or flooring, or it may be thrown off center by the warpage of the wooden form or flooring or in the laying of the cement or concrete. If a galvanized sleeve is not truly centered until the cement or concrete flooring has hardened a metal sleeve when inserted into the galvanized sleeve or into the hole formed by the galvanized sleeve (if the galvanized sleeve should be removed with the wooden form or flooring to which it is fastened) will not be truly centered and great difficulty will be experienced in properly centering a steam or other pipe intended to be inserted through the metal sleeve. It will be readily understood that if a pipe is not properly centered when it passes through the first floor there will be difficulty in getting it to pass easily through the metal sleeve through which it is intended to pass on the second floor, and if the metal sleeve on this second floor be not truly centered the difficulties are increased. And there does not appear to be any practical method at present in use for in all cases determining just where a galvanized sleeve should be nailed to the wooden form or flooring for the cement or concrete of the second floor in order to assure that the hole formed by the galvanized sleeve nailed to the wooden form of the second floor will be truly registered with a like hole on the first floor. The best that can be clone is to endeavor to determine by measurements just where the galvanized sleeve should be nailed to the wooden form or flooring of the second floor, and it is not easy to make the exact measurement required for that purpose, to say nothing of the risk that when the hole is formed in the concrete flooring of the second floor it will not be truly centered with respect to the center of the corresponding hole in the concrete flooring of the first floor.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof.