US1576141A - Plaster board - Google Patents

Plaster board Download PDF

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Publication number
US1576141A
US1576141A US749676A US74967624A US1576141A US 1576141 A US1576141 A US 1576141A US 749676 A US749676 A US 749676A US 74967624 A US74967624 A US 74967624A US 1576141 A US1576141 A US 1576141A
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United States
Prior art keywords
plaster
board
plaster board
sheets
retarded
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Expired - Lifetime
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US749676A
Inventor
John N Schumacher
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Individual
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Priority to US749676A priority Critical patent/US1576141A/en
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Publication of US1576141A publication Critical patent/US1576141A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper
    • Y10T428/31996—Next to layer of metal salt [e.g., plasterboard, etc.]

Definitions

  • adhesion of the covering sheets and cementitious body is amaximum, and the board in its green state-has characteristics permitting handling without damage.
  • the time interval required for setting of ,the plaster ⁇ body is an appreciable element in the production. Any method or means which Will decrease the time element is desirable.
  • rIhe primary objects of this invention are to pro-vide an article of the character de' scribed and a method for producing the same which will decrease the time interval, maintain the quality of the article, and provide economy in manufacture.
  • Fig. l is a fragment of the lengthIof plaster board constructed in accordance With my invention; and Fig. 2 is atransverse section through an edge thereof on an enlarged scale. l,
  • a cementitious body 3 is shown interposed body '3 is'preferably made ⁇ of quick setting plaster.
  • the -covering sheets 4 and jare preferably ofpapefso treated asv to be slow- 4 1 day of November 1924:. placed against the quick setting plaster, the 1 resultant adhesion of the paper to the plasly permeable 4to moisture.
  • Thel ter body would not reach the qualitydesired as the plaster would set before the moistureA uould permeate the covering sheets sui.' Aclently to form a goed bond.
  • My invention resides particularly in the treatment whereby a satisfactory. l. adhesion is obtained.
  • Quick settingv plaster decreases thevtime element required for productionofthe board.
  • each coverin sheet with a layer of retarded plaster.
  • Thls plasr ter will form a good bond with the body 3 and a 'satisfactory bond With 'the covering sheet.
  • rlhe layers'of retarded plaster are indicated by 6 and'7, and are in effect laminations. These laminations maybe pro- ,duced by passing. the covering' sheets in contact With plastic retarded plaster lso that the latter Will cling thereto, and then interposing the plaster board 3 therebetween' in the manner Well known lin the art,
  • the laminations of V'retarded plaster board will assure a satisfactory adhesion between the covering sheets and the body.
  • An article of the character described comprising a body of quick setting plaster interposed between pliable sheets slowly permeable to moisture, and laminationsof retarded plaster disposed on the outer faces ⁇ of said body and binding said sheets and body.

Description

March 9 ,1926. 1,576,141l
v J; N. SCHUMACHER PLASTER BOARD 1 Eiled Nov; 1s, 1924 ATTORNEYS.,
Patented M8439, l1926. l
UNITED STAT-as` PATENT OFFICE..
JHN N. SCHUMACHER, OF LOS ANGELES, CALIFORNIA.
rLAs'rER BOARD.
i Apancaamimed November 1s, 1924. serial No. 749,676.
. in the manufacture of such articles to provide a method and material whereby the.
adhesion of the covering sheets and cementitious body is amaximum, and the board in its green state-has characteristics permitting handling without damage. The time interval required for setting of ,the plaster` body is an appreciable element in the production. Any method or means which Will decrease the time element is desirable.
rIhe primary objects of this invention are to pro-vide an article of the character de' scribed and a method for producing the same which will decrease the time interval, maintain the quality of the article, and provide economy in manufacture.
'.lhese objects together W1th other objects and corresponding accomplishments are obtained by means of the embodiment of my invention illustrated inthe accompanying` f drawing. 1n Whlch:
Fig. l is a fragment of the lengthIof plaster board constructed in accordance With my invention; and Fig. 2 is atransverse section through an edge thereof on an enlarged scale. l,
Referringmore particularly to thedraw- D, a cementitious body 3 is shown interposed body '3 is'preferably made `of quick setting plaster. The -covering sheets 4 and jare preferably ofpapefso treated asv to be slow- 4 1 day of November 1924:. placed against the quick setting plaster, the 1 resultant adhesion of the paper to the plasly permeable 4to moisture. With the paper between-covering sheets 4 and .5. Thel ter body would not reach the qualitydesired as the plaster would set before the moistureA uould permeate the covering sheets sui.' Aclently to form a goed bond. My invention resides particularly in the treatment whereby a satisfactory. l. adhesion is obtained. Quick settingv plaster decreases thevtime element required for productionofthe board.
In order to overcome these'objectio'ns, I coat the inner face of each coverin sheet with a layer of retarded plaster. Thls plasr ter will form a good bond with the body 3 and a 'satisfactory bond With 'the covering sheet. rlhe layers'of retarded plaster are indicated by 6 and'7, and are in effect laminations. These laminations maybe pro- ,duced by passing. the covering' sheets in contact With plastic retarded plaster lso that the latter Will cling thereto, and then interposing the plaster board 3 therebetween' in the manner Well known lin the art,
The plaster body ,3 Willset quickly pro- I ducinga board stiff enough to handle Without injury in a .very short interval of ti'me. The laminations of V'retarded plaster board will assure a satisfactory adhesion between the covering sheets and the body.
What4 I claim is:
1. `An article of the. character described comprising a quick lsetting ceinentitious body, acovering sheet of pliable material slovvly permeable to moisture, and a lamination 'of retarded cementitious material binding said sheet and said body.
2. An article of the character described comprising a body of quick setting plaster interposed between pliable sheets slowly permeable to moisture, and laminationsof retarded plaster disposed on the outer faces `of said body and binding said sheets and body.
In Witness that I claim the foregoingl` have hereunto subscribed myl name this 3rd
US749676A 1924-11-13 1924-11-13 Plaster board Expired - Lifetime US1576141A (en)

Priority Applications (1)

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US749676A US1576141A (en) 1924-11-13 1924-11-13 Plaster board

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US749676A US1576141A (en) 1924-11-13 1924-11-13 Plaster board

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US1576141A true US1576141A (en) 1926-03-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871134A (en) * 1954-11-22 1959-01-27 Celotex Corp Gypsum products and process of manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871134A (en) * 1954-11-22 1959-01-27 Celotex Corp Gypsum products and process of manufacture

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