Improvements in Metallic Roofing Plates or Shingles.
Year: 1888

page_text: [Communicated from abroad by JACOB S. THORN, of Philadelphia, Pennsylvania,
United States of America, Manufacturer.]
Improvements in Metallic Roofing Plates or Shingles.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lako & Co., Patent Agents
Southampton Buildings in the County of Middlesex, 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 :-
My invention relates to the construction of metallic roofing plates or shingles and
especially to those of a lozenge or other form having a downwardly-extending point;
the object of my invention is to secure the downwardly-extending point in place when
the shingles are laid upon each other to form a roof covering. In the accompanying
drawings my invention is fully illustrated. Figure I showing three lozenge-shaped
plates embodying my invention secured upon each other in the way they are placed
upon a roof. Figure 2 is a section on the line x-x. Figure 3 a section on the
line y-y; and Figure 4 a section on the line z―z.
A A A are the metallic shingles or roofing plates; as shown, their upper ends, a,
are flat and lie upon the planking of the roof, while their lower ends, a', are struck
up or elevated and terminate in abrupt downwardly-bent flanges B. B.; this con-
struction giving them the appearance of thick earthenware tiles when secured upon a
roof. F is an elevated edge or projection struck up along the medial line of the plate
in order to strengthen and stiffen it. E. E and dare ridges struck up on the
upper end a of the shingles over which the flanges B B of similar shingles lap as
shown in Figure 1; they serve as guages to insure the correct placing of the
shingles on each other and also as dams to prevent water from passing beneath
the flanges B B and over the top of the shingle which said flanges lie upon.
In order to keep the lower points of the shingles in close contact with the shingles
on which it lies, I form a seam, D, inside the rib, d³, the metal of one of the upper
edges of the shingle being bent as shown at d d' and d², to form an overlapping flange
and then bent to form the rib d³ and nailing flange d. The upper portion D, of fold D,
is flattened down as is shown in Figure 4. On the opposite lower edge of the shingle

page_text: I form, at the bottom of the flange B, an outwardly-extending flange C adapted to fit
beneath the fold D of a similar shingle as is shown in Figure 3. By this device the
point, a', is held tightly against the shingles which it overlaps. It will be at once
seen that the ridge d³ acts as a locking device to prevent the flange Û from being
withdrawn from the seam D.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is:
In a metallic shingle or roofing plate having a struck-up or elevated point at its
bottom terminating in abrupt downwardly-extending flanges, the combination of a
fold D and ridge d³ formed on one of the upper edges of the shingle with an
outwardly-extending flange formed on the bottom of the downwardly-extending flange
of the opposite lower edge of the shingle, all substantially as and for the purpose
shown and described.
1
יד
1000