Improvements in and relating to Paving Blocks.
Year: 1890

page_text: Date of Application, 21st Nov., 1890-Accepted, 27th Dec., 1890
Improvements in and relating to Paving Blocks.
L, ANTHONY FRANCIS EMERIC DE ST. DALMAS, of 11. De Montfort Square, Leicester,
Manufacturing Chemist, do hereby declare 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 statement :—
The subject of this invention is improvements in and relating to paving blocks and
its object is to overcome the objectionable features of the systems already in use, by
providing wood blocks which may be combined with some other material in the
construction of the road.
By this means the imperfections of the different materials when used separately are
overcome and the pavement wears longer.
In order that my invention may be more readily understood, reference is made to
the accompanying drawings in which-
Figure 1 illustrates a section of a portion of a road faid in accordance with my
invention;
Figure 2 is an enlarged view of my improved wood blocks;
Figure 3 shows the shape of the material hereinafter called a key, which is inserted
in the space between the two blocks, and
Figure 4 is a modified form of wood block.
Like letters indicate like parts throughout the figures.
A, Figure 1 shows the foundation of the road bed upon which the wood blocks
are to be laid,
The wood blocks B which are formed as hereinafter described, are laid upon the
said bed A the key C being inserted in the spaces as the said blocks are laid."
The wood blocks B as illustrated more clearly in Figure 2, consist of a rectangular
piece of wood having a semi-dovetail portion removed therefrom and the blocks are
laid so that the cut sides of the blocks are placed together thereby forming a dove-
tail space between them.
h
In those spaces keys are inserted as the blocks are being laid. The keys Care
made of stone, concrete, asphalte, indiarubber or other serviceable material, moulded,
cut or otherwise formed to fit the shape between the adjoining pieces of wood B.
When the road paving is being laid the spaces may be smeared or lined with
boiling pitch or other suitable material or otherwise heated according to the option
of the workman, and the moulded cement, hot asphalte or other material to form the
key is put in position.
If desired wedges may be employed to further secure the keys.
The blocks may be coated with tar, creosote or other substance in the usual manner
for the preservation thereof.
In the modification shown in Figure 4, the second material employed is inserted
in a groove b² in each block B¹. This method is advantageous in some cases.
It is to be understood that I do not wish to confine myself to a dovetail groove as
the shape of the said groove may be varied without departing from the spirit of my
invention.
By the use of wood blocks in combination with a second material as herein-before
mentioned, the road is rendered more durable, the diversity of the materials gives a
better foothold and the pavement is less noisy than when the barder material is used
separately. Also hy this invention indiarubber may with advantage bo used this
material having previously been barred by reason of the expense and the difficulty
as notioned in loving it down

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. An improved block for wood-paving having a semi-dovetail or other shaped
portion removed from the upper side, substantially as and for the purpose described
and illustrated.
2. The combination with wood paving blocks of a dovetail or other shaped key
inserted on the upper side in each pair of blocks, substantially as described and
illustrated in the accompanying drawings.
3. An improved block for wood paving having a groove removed from its upper side,
substantially as described and illustrated.
4. The combination with a wood paving block of a key inserted in a groove in the
upper side of the said block, substantially as described and illustrated in the accom-
panying drawings.
Dated this 01st N
1000
ANTHONY FRANCIS EMERIC DE ST. DALMAS.
By his Agents, Horn & Son.
ANTHONY FRANCIS EMERIC DE ST. DALMAS.
By his Agents, Horn & Son.