US 1417553 A
Description (OCR text may contain errors)
0.5. MUENCH. 'CONCRETE BUILDING CONSTRUCTION.
"Patented May 30,1922.
APPLICATION FILED SEPT. 29, 1920.
UNITED ATES PATENT OFFICE,
em a: momma, or sr. PAUL, MINNESOTA.
, CONCRETE BUILDING CONSTRUCTION.
Specification of 'Letters Patent.
Patented May 30, 1922.
1 Application filed September ass-192e," Serial no. 413,550.
Be it known that I, CARL G. Mormon, a citizen of the United States, residin at St. Paul, in the county of Ramsey and tateof Minnesota, have invented certain new and useful Improvements-in Concrete Building Constructions; and I. do hereby declarethe' following to-be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which'it appertains to make and use the same.
This invention relates to concrete building construction and .has for its object to provide a concrete building having thermoinsulated' walls, which will be simple and comparatively inexpensive to construct and more eflicient in use than those heretofore, proposed.
With this and other objects in view the invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims. i
Referring to the accompanying drawin s forming a part of this specification in whic "like numeralsdesignate like parts in all the views i'- ure 3 illustrating still further modified forms of wall construction; v
Referring. more; particularly to the form of the invention shown in Figs. 1 and 2, 1 indicates a thermal insulating block preferably of felted cellulose'fibrous material,- which block is provided in the course of its manufacture with the integral lugs or projections 2, as will be clear from the drawings. The fibers composing the said block may be conveniently obtained vfrom the waste products of the ordinary paper mill, known as wood pulp tailing's and are of varying sizes, such as the coarse sliver like fibers 3, of from say 1/16 to 1/8 of an inch in diameter and from 3/8 to 5/8 of an inch long; the medium threadlike fibers 4, of from 1/50 to 1/32 of an inch in diameter,
and from 1/2 to 1 inch in length; andthe fine hairlike' fibers 5, of from 1/10() to 1/200 of an inch in diameter and from 1 to 2 inches long. In addition to these there may also, be a fourth class composed of relatively .short fine fibers, such as are commonly used for making paper, and which in the present instance'act as a filler or binder. By felting the aboveclasses of fibers togetherby means ofa suitable machine a board or block may be produced which is exceedingly porous and light, and is at the same time relatively strong and possesses excellent heat insulating qualities. In fact, it entrains an abnormal quantity of .air and is a very close approximation to cork both as to its. porosity and specific gravity, and also as an insulator. c a r In the development of concrete buildings a' serious disadvantage has manifested itself, in that the concrete is a relatively good conductor of heat and cold, and therefore buildings constructed from such material have proven difii'cult'to heat satisfactorily in winter, andconversely, exceptionally warm in thesummer. However, by providing a core or'base wall of blocks such as those above. described, and suitably imbedd'ing them in, or coating one or. both sides thereof with concrete, a building may be obtained which will embody the rigidity and enduring qualities of the latter material while at the same time, possessing heat insulatingiqualities not to be found in those built under the methods previously proposed.
" Accordingly, I propose to build up a substantially unbroken wall of blocks 1, and -.to
associate therewith suitable forms or sheathing 6, see' Figure 1. The said sheathing will be spaced fr'om the body portion of the blocks 1, by thelugs or projections2 there'- on, and into this said space 7, a suitable mixture' of concrete 8 'may be poured in the I usual manner. After the said concrete 8 has set, the forms 6 may be removed, leaving a poured monolithic cement wall having a core of heat insulating material,
The insulating material being com osed of the individual fibers having the 'di ering dimensions above disclosed, it of necessity is possessed of innumerable air cells, and therefore, it entrains or imprisons such an 'abnormal or large quantity of air that it has a heat insulating capacity equal to that of cork. It is also highly porous as above described, bonds with the plastic material, and I which the body portion,-instead of being per- "concrete 8.
fectly straight, is made zig zagor of cor rugated cross 1 section. will of course add somewhat to the strength of the core, and at the same time permit of a thicker layer of plastic material on each side thereof without increasing the length of the lugs .2. The joints between the adj acent blocks may be stepped or lapped, as shown at 10 in said figure." i
It will'of course be obvious that if desired the lugs 2 may be omitted and in lieu thereof suitable spacing strips may be em- .ployed between the core and the sheathing 6 to provide-spaces for the concrete 8. wall constructed upon this principle is shown in Figure 4, wherein the hollow core blocks 1 instead of being provided withitheoutwardly projecting lugs'are suitably recessed as. at 12 to provide additional bonds'for the If desired, suitable tie wires or staples 13 may berun through the blocks 1 as shown to further strengthen the con- -just as theyset, or they struction, although it is preferable to have no heat conductmg connections at all between the inner and outer layers of concrete. 1
'In Figure 5, the hollow blocks 1 are provided with recesses 12 upon one side only and are made with a tongue and groove joint In this case the inner layer of concrete is omitted, and a coat of plaster 16 is applied directly to the inner surface of the blocks 1. Suitable metal reinforcing material 17 may be imbeddedin the outer concrete 8, as shown. j
a The interior and'exterior surfaces of the concrete walls illustrated may be treated in any desired manner after the forms 6 are removed. That is to say, they may be left may be suitably coated .withplaster, stucco, or paint,'as each layers, as would ,be 1 the case This construction individual case may require. Further, the core blocksl may be suitably waterproofed, if desired, either by" impregnation with waterproofing substances during their manucore extends throughout its .length and breadth without interruption by other material, as opposed to the construction whereinthe individual blocks of said core are spaced apart and the spaces filled with some other material. p
It is obvious that those skilled in the art may vary the details of construction as well as the) arrangement of parts without departing from the spirit of the invention and therefore'I do not wish to be limited to the above disclosure except as may be required by the claims,
' What I claim is l. A concrete buildingc onstruction comprising a wall having-a continuous core of A fibrous felted materiallentraining an abnormal quantity of air, and coated on both sides with a plastic material and having interlocking connectionsbetween said fibrous and plastic materials, substantially as described.
2. A concrete building construction comprising a wall having a hollow continuous core composed of different sizesof fibers to provide numerous air cells and having bonded to said core on each side thereof a plastic material, and said core provided with lugs .to interlock with said'plastic material,
substantially as "described.
A concrete building construction comprising a wall having a continuous heat insulating core zigzag in crosssection provided with projections constituting inter- \locking means for the finishedlplastic layers, and said core coated on each side with a plastic material adhering thereto, substantially as described. I
In testimony'whereof I aflix my signature two witnesses.
'cARL e. MUENCH.
in presence o