Cement Block Machine: Difference between revisions
Public wiki for the 1904 Louisiana Purchase Exposition
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| location = [[Mining Gulch]] | | location = [[Mining Gulch]] | ||
| no_buildings = 2 | | no_buildings = 2 | ||
| construction_cost= | | construction_cost= $300 (${{Format price|{{Inflation|US|300|1904}}}} in {{Inflation/year|US}}) | ||
| furnishing_cost = | | furnishing_cost = | ||
| profit = | | profit = | ||
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==Description== | ==Description== | ||
A pamphlet gives the process of manufacturing of the blocks in the following: | A pamphlet gives the process of manufacturing of the blocks in the following: | ||
The blocks are made in a steel lined mould, with the face side of the block up, and compressed under heavy pressure which enables the block to be immediately taken from the mould and put on a rack to cure. The concrete is mixed in the proportions of one part of Portland Cement to six to eight parts of sand, gravel or broken stone. The blocks having no interior cores, coarser, and wetter concrete may be used for the body of the block (thereby giving greatly increased strength with a less quantity of cement) and any desired facing may be put on (depending upon the pressing board used) with very slightly increased expense. | |||
The facing and body portion unite perfectly. Many thousands of faced blocks have been made and in no instance has there been any scalding. The great pressure gives double the strength of hand tamped blocks, and a hard surface is obtained, which is impervious to soot and dust, and is not ruined in appearance by time and rains, as is the case with a wall built of blocks that have been tamped by hand. When a smooth pressing board is used with a 1 to 2 cement and sand facing, a fine granular texture is produced which cannot be distinguished from rubbed sandstone except by an expert. Tooled and rock face surfaces can be made with equal success. The blocks are quickly made and can be rapidly placed in the wall, the cost, complete in the wall being only about one-fourth that of stone of equal appearance, one-half that of common brick with pressed brick facing, and about the same as frame, and need no repairs or painting. A special block for corners, door and window jambs, etc., can be made in the same moulds by using different core blocks, and it is an easy matter to vary the size of the blocks to fit any space, or cut the blocks as desired. 'The stiffness or rigidity of walls built of these blocks laid in cement is very much greater than that of a brick or rubble wall of even greater thickness This is owing to the fact that the points bear a less proportion to the volume of the wall than in other masonry walls, and the bonding is more perfect." <ref> "ST. JOHN'S NEW ENTERPRISE" ''The St. John Weekly News''. 28 Oct. 1904, p. 8.</ref> | The facing and body portion unite perfectly. Many thousands of faced blocks have been made and in no instance has there been any scalding. The great pressure gives double the strength of hand tamped blocks, and a hard surface is obtained, which is impervious to soot and dust, and is not ruined in appearance by time and rains, as is the case with a wall built of blocks that have been tamped by hand. When a smooth pressing board is used with a 1 to 2 cement and sand facing, a fine granular texture is produced which cannot be distinguished from rubbed sandstone except by an expert. Tooled and rock face surfaces can be made with equal success. The blocks are quickly made and can be rapidly placed in the wall, the cost, complete in the wall being only about one-fourth that of stone of equal appearance, one-half that of common brick with pressed brick facing, and about the same as frame, and need no repairs or painting. | ||
A special block for corners, door and window jambs, etc., can be made in the same moulds by using different core blocks, and it is an easy matter to vary the size of the blocks to fit any space, or cut the blocks as desired. 'The stiffness or rigidity of walls built of these blocks laid in cement is very much greater than that of a brick or rubble wall of even greater thickness This is owing to the fact that the points bear a less proportion to the volume of the wall than in other masonry walls, and the bonding is more perfect." <ref> "ST. JOHN'S NEW ENTERPRISE" ''The St. John Weekly News''. 28 Oct. 1904, p. 8.</ref> | |||
==After the Fair== | ==After the Fair== | ||
Latest revision as of 22:54, 27 November 2022
 | |
| Location | Mining Gulch |
|---|---|
| No. of Buildings | 2 |
| Construction | |
| Construction Cost | $300 ($9,048 in 2021) |
Near the Portland Cement building in the mining gulch were two buildings for cement blocks, demonstrating a machine to manufacture them, and examples of the finished goods.
Before the Fair[edit | edit source]
Description[edit | edit source]
A pamphlet gives the process of manufacturing of the blocks in the following:
The blocks are made in a steel lined mould, with the face side of the block up, and compressed under heavy pressure which enables the block to be immediately taken from the mould and put on a rack to cure. The concrete is mixed in the proportions of one part of Portland Cement to six to eight parts of sand, gravel or broken stone. The blocks having no interior cores, coarser, and wetter concrete may be used for the body of the block (thereby giving greatly increased strength with a less quantity of cement) and any desired facing may be put on (depending upon the pressing board used) with very slightly increased expense. The facing and body portion unite perfectly. Many thousands of faced blocks have been made and in no instance has there been any scalding. The great pressure gives double the strength of hand tamped blocks, and a hard surface is obtained, which is impervious to soot and dust, and is not ruined in appearance by time and rains, as is the case with a wall built of blocks that have been tamped by hand. When a smooth pressing board is used with a 1 to 2 cement and sand facing, a fine granular texture is produced which cannot be distinguished from rubbed sandstone except by an expert. Tooled and rock face surfaces can be made with equal success. The blocks are quickly made and can be rapidly placed in the wall, the cost, complete in the wall being only about one-fourth that of stone of equal appearance, one-half that of common brick with pressed brick facing, and about the same as frame, and need no repairs or painting. A special block for corners, door and window jambs, etc., can be made in the same moulds by using different core blocks, and it is an easy matter to vary the size of the blocks to fit any space, or cut the blocks as desired. 'The stiffness or rigidity of walls built of these blocks laid in cement is very much greater than that of a brick or rubble wall of even greater thickness This is owing to the fact that the points bear a less proportion to the volume of the wall than in other masonry walls, and the bonding is more perfect." [1]
After the Fair[edit | edit source]
See also[edit | edit source]
Notes[edit | edit source]
References[edit | edit source]
- ↑ "ST. JOHN'S NEW ENTERPRISE" The St. John Weekly News. 28 Oct. 1904, p. 8.
