IL24013A - Plastering composition - Google Patents

Description

C O H E N Z E D E K S P I S B A C H E PAT ENT ATTO R N EYS LEVONTIN 1169 T E L A V V P A T E N T S D E S I G N S O R D I N A N C E SPECIFICATION PLASTERING p a n ARE the nature of this invention and in what manner the same is to be performed to be particularly described and ascertained in and by the following invention is to a plastering more to a plastering composition which may he applied directly to concrete Prior plastering compositions in with and the have suffered from number of serious One of the largest plastering over concrete results from the fact that the concrete is very rough since the same is generally with holes and contain protruding especially where two slabs order to keep surface irregularities to a a high cost plywood is used the smoothness is when conventional plasterin materials are applied because they cannot be applie a certain thickness without cracking and With the presen concern about the roughness of the concrete is eliminated the subject plastering composition can be put on thickly necessary to cover all imperfections in the concrete and despite this greate it will not crack or the plastering compositio of the present invention will harden to the same degree of hardness as the concrete This results not only in a uniform and smooth which does not show the seams between the concrete also in a substantially indestructible ceiling or wall as the may the concrete contracto can use a much cheaper grade of rough finish plywood for his forms thereby stantially lowering cost of the concrete With other types of plastering i is necessary to grind or chip the concrete in order to form a surface with which a bond can be Shis involves high labour No such grinding or ehlpping is necessary to achieve a perfect bon with the plastering composition of the present The plastering composition of the presen invention a consistency thereby enablin be spread by trowel with far greater physical This results in the plasterer covering a greater area in a shorter time When more water is added the composition can be sprayed on to achieve a smooth textured lesser skilled workers can do a plastering Job and provide a smooth uniform finish on the wall or The plastering composition of the present invention is white and with the passage of time remains as white as when was It will retain whiteness far longer than any white painted conventional plaster If a coloured ceiling is a colouring agent can be mixed the plastering composition and the resulted colou will give the same satisfactory service as a without the necessity of painting the Prior compositions have presented in a paint prior compositions tended to differentially reac with paint or othe protective plastering composition of the presen invention reacts uni to paint or other protective coatings so as to convey In applyin a conventional plastering composition to a the same generally applied in three First a bonding agen is applied to the Then a base coat is applied to the agent and a finish coat is applied no plastering composition could be applied with a thickness greater than of an most plastering compositions could only be applied to a thickness of of an She plastering composition of the invention can be applied up to and than of inch in thickness thereby eliminating all concern about the roughness of the It is of the present invention to provide an improved plastering It is another object of present invention to provide a plastering composition which be uniformly applied to a concrete surface without regard to ridges or in concrete It is another object of present invention to provide a plastering composition which ca to a concrete surface b trowel with far greater ease than conventional It another object of the present invention to provide a plastering composition which may be uniformly painted a protective It is another abject of the present invention to provide a plastering composition which rus will not It is another object of the presen invention to provide a plastering composition which may be sprayed onto a It another objec of the present to provide a plastering composition having a relatively high water It is still another o of the presen invention to provide a plastering composition which will remai sufficiently in consistency when in batch yet will harden to the hardness of concrete when applied a wall or It is still object of the present invention to provide a plastering composition whic is unite in eolour and hard and smooth so as to eliminate the necessity of applying an oute pigmented Other objects will appear These and other objects are accomplished by the plastering composition of the present invention which comprises a uniform mixture of about 80 to 125 pounds of ine industrial and preferably about 100 pounds of fine industrial about 40 to 60 pounds of hydrated and preferably about 50 pounds of hydrated finish about 5 to 14 pounds of Eeenes and preferably abou 8 pounds of Eeenes about to pounds of finely divided and preferably about 5 pounds of finely divided and about 1 to 4 ounces of finely divided Florida and preferably about 2 ounces of Florida composition should preferably dry blended and then with approximately 6 to 10 gallons of water and preferably of the of 8 of although the amount of water which may be added ma be controlled so as to give the desired fhe sand to be us d in the composition of the present invention should be a high grade industria pre which I have utilized is obtained from Hew and is 5 Shis sand has a chemical analysis in weight percent of approximately to to about to of and a trace of She loss on ignition of the is I have used a finely divided g which passses through American Screens 55 and Prior to my I am aware of no one who ever used fine industrial sand as an ingredient in a plastering composition which is applied as a smooth nished surface on a ceiling or the it has been proposed to utilize finely divided pumice or marble dust in a plastering A plastering composition having pumice or marble dust does not the advantages of the position of the present pumice and marble cost approximately twenty times the cost of fine industrial She hydrated finish lime which I have is fled Top Hydrated Finish Lime which complies with the specifications of and Federa Type This material is described in Bulletin File of the United States Gypsum other hydrated limes may be For Super Limoid of the Warner Philadelphia may be Limoid is also commercially available from other The Keenes white cement which Top is a finely ground gypsum product which complies with both 61 and Federal Specification It will he noted that the amount of Eeenee cement is substantially less than the recommended amounts of Keenes cement which have been proposed heretofore plastering compositions and the amount of Keenes cement which utilize in the plastering composition I have found that the presence of Florida zircon in my plastering composition renders the same superior to compositions proposed While Florida zircon is a preferable it is not an essential The manner in which Florida combines with the other ingredients is not It is believed that the Florida zircon in some way contributes to the water repellancy of my plastering composition since it is insoluble in dilute mineral alkalis and hot concentrated The Perlite is a preferred but is no an absolutely essential component depending upon intende manner of applying the plastering The Perlite makes the plastering composition relatively that any chemist in the art o plastering compositions could modify the following in light o the present disclosure in much the same manner that a skilled mechanical engineer could modify a It is to he assumed no one will seek to modify the ollowing so as to produce an inoperative pounds of Sew Jersey dustrial pounds of hydrated 10 pounds of 5 of and 2 ounces of Florida zircon e dry blended to achieve intimate Shea 8 gallons of water were slowly the mixture to produce a mass of like This mass was utilised as a in composition by troweling the same on a concrete When the composition it the hardness of had a uniform and was water and a white uniform when coated with a the dry plastering Composition was of uniform The composition could be applied thicknesses up to and more than quarter of an Jll ridges and the in concrete were completely The composition of Example when additional water was had a consistency which the same to be batch of Example I retained sistency fo a sufficiently long period of time so that it was not necessary to complete the entire ceiling in one Shis a marked advance over compositions proposed heretofore which required a plasterer to finish a wall or ceiling immediately before leaving the site of wall at the end of a work The composition of Example I was the Florida zircon was eliminated an The resulting composition performed in substantially the manner as described above but to extent the advantage o water III composition of Example I was however the Perlite was eliminated as an The resulting composition performed in the same manner as described above except that it was dificul to spray the composition so as attain a uniform finish and soun absorptive properties were slightly 100 pounds of Sew Jersey fine industrial 50 pounds of hydrated finishing and 8 pounds of Scenes cement dry blended to achieve Intimate then gallons of water slowly added to the mixture to produce a mass of This mass was used as a piaster ing composition on a concrete surface having The mass dried to a hardness of Th to and was not water In order to obtain a uniform texture and the plasterer required sufficient time to trowel the mass so as to obtain a uniform texture and While the plastering composition in each of the examples was and remained when a colouring agent can be mixed with the composition in the above examples to give any coloured composition as In the ceiling or wall need not be cost of the materials utilized the above is far less than the cost of conventional plastering The ability of the composition to be sprayed on eliminates the necessity for skilled enables the compositio to be applied much and reduces cost of a plastered wall or the plastering composition of the present invention offers a substantial reduction in the cost o obtaining a plastered wall or celling having advantages not capable of being attained by conventional plastering compositions proposed a She present may be embodied in without departing from the spiri o essential attributes thereof reference should be made to the appended rather than to the foregoing specification as the insufficientOCRQuality

Claims (1)

1. HOW particularly described ascertained the of my said invention and vhat manner the same is to be X declare that what 1 claim A plastering composition to mixed frith consisting essentially of about 80 to parts b weight of industrial 40 to 60 parts by freight of hydrated finishing 8 to 14 parts by weight of Keenes white and to b weight of Florida A plastering accordance with Claim 1 which Includes about 3 to 8 parts by weight of A plastering composition in accordance with Claim 1 which about 48 to 480 b weight of water is added to the A plastering composition accordance with Claim 1 consisting essentially of parts by weight of parte by weight of finishing 10 parts by weight o Keenes white and parts by weight of Florida A plastering composition in accordance wit Claim consisting essentially of parts by weight of fine industrial SO parts by weight of finishing 10 parts by weight of Keenes white 5 by weight of and parts by weight of Florida A plastering composition to toe water consisting essentially of 80 to parts by weight of industrial to 60 parts by weight of hydrated and 5 to 14 parts by weight of white A plastering composition in accordance Claim 6 in about 43 to 480 parts by weigh of water is added to the A plastering composition to be mixed with water consisting essentially of 80 to 125 parts b weight o industrial 40 to parts by weight of hydrated 5 to 14 parts by weight of Keenes white and 3 to 8 parts by weight o A plastering composition accordance with Claim 8 in which about 48 to 480 parts by Qt water is added to the A plastering composition consisting ially of fine industrial hydrated finishing and Keenes cement all intimately a sufficient amount Perlite to enable to b and the parts by weight of being suf to enable the resultant composition to harden to the degree of DATED THIS 21st day of Attorne s for insufficientOCRQuality