IMPROVEMENTS IN " PAVEMENTS
Year: 1885

page_text: We WILLIAM CHARLES MURDOCK and EDWIN FORREST MURDOCK both residing
at 1021, Vermont Avenue, in the City of Washington District of Columbia, and
United States of America, Patent Attorneys, do hereby declare the nature of our
invention for IMPROVEMENTS IN
"
PAVEMENTS and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement:―
Our invention has for its object to provide a pavement composed of blocks or
tiles constructed in such a manner and so combined with each other as to present
a smooth and unbroken wearing surface and render the pavement less liable to
be affected by changes in its foundation due to the action of frost and to other
causes.
a
The details of the construction of our pavement will be first described at length
and then pointed out specifically in the claims at the end of the specification.
In the accompanying drawings,
Fig. 1 represents a perspective view of one of the blocks of which our pavement
is composed.
Fig. 2 is a plan view of a portion of the pavement constructed in accordance
with our invention.
Fig. 3 is a plan view of a mold such as may be used in forming two of the
blocks or tiles simultaneously.
Fig. 4 is a sectional view of the same.
The letter A designates
Each of these blocks on
Fig. 5 is a view of a mold for forming a single block at a time.
Fig. 6 is a sectional view of the mold shown in Fig. 5.
the blocks of which our improved pavement is composed.
its two opposite sides B B is beveled outwardly from top to bottom while on its
opposite sides, C C it is beveled outwardly from bottom to top, the result being that
any two of its intersecting sides present reversed beveled surfaces as shown clearly
in Fig. 1.
Upon any suitable foundation prepared for the purpose, the blocks or tiles
constructed as above described are laid in such manner as that when fitted
together, all their proximate beveled surfaces will correspond to each other and
thus form smooth and regular joints besides operating by reason of overlapping one
another to lock each other in position and thus render the pavement as a whole,

page_text: rigid and less liable than the ordinary pavement to have the blocks or tiles canted
or displaced by the operation of frost or any slight subsidence of the foundation or
bed upon which it is laid. The blocks or tiles may be made of stone, cement, clay,
wood, iron, furnace slag, bitumen, coal tar or asphaltum mixed with sand or stone
or any other suitable material that can be cut to the desired shape or made into a
plastic condition molded and dried or baked. To ensure the closeness and tightness
of the joints between the blocks and to if necessary render them water tight the
beveled edges or sides of the blocks may be painted with asphalt, bitumen, or coal
tar or other like material.
Figs. 3, 4, 5 and 6 represent molds that may be used to form the blocks or tiles
from plastic material such as clay or cement The mold represented in Figs 3
and 4 is a double one and is provided with wedges E E E which are loosely inserted
in grooves F F F When the mold is up-set these wedges fall out with the
material molded and thus preserve the beveled edges intact The mold represented
in Figs. 5 and 6 is a single one and is operated in a similar manner.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
1. A pavement composed of tiles or blocks each of which has its opposite sides
beveled outwardly from top to bottom or from bottom to top as the case may be so
that any two of its intersecting sides will present reverse bevels and said tiles
or blocks being fitted together with their oppositely. beveled sides proximate
substantially as described.
2 A paving block or tile having its opposite sides beveled outwardly from top
to bottom or from bottom to top as the case may be so that any two of, its inter-
secting sides will present reverse bevels for the cooperation of the oppositely beveled
sides of other similarly formed blocks or tiles substantially as described.
A
3. A mold having the wedge, shaped pieces EE set loosely in the mold and
beveled under substantially as described and shown for the purpose specified..
1
n