Year: 1888

page_text: Communicated from abroad by JACOB S. THORN, of Philadelphia, Pennsylvania,
United States of America, Manufacturer.]
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & 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 shingles or roofing plates and
has for its object to construct such shingles so as to interlock and form tight joints or
seams with each other when secured upon a roof and also to render them more sightly
by giving them the effect of earthenware tiles without impairing their tightness or
stiffness. These objects I accomplish by forming the metal plates as shown in the
drawings in which Figure 1 is a plan view of three of my improved roofing plates
secured together in the way they are arranged on 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 indicate my improved shingles, the central lower edges, a¹ of which are
struck up or elevated as shown, terminating in an abrupt downwardly-bent flange Bbb;
the sides bb of which gradually narrow as they extend towards the edge of the
shingle; the upper part, a. of the plates are flat and lie upon the boarding of the roof
to which they are secured. C is a rib or corrugation formed along the central medial
line of the plate and extending down along the struck-up or elevated part of the
same; its use is to strengthen and stiffen the plate and hold the edge of the flange Bbb
down against the shingles or plates which it overlaps. DD are ribs or corrugations
formed on the upper portion, a, of the plates and having to some extent the con-
figuration of the flange B b b, said flange in one shingle lying over and against the
flanges D as is shown in Figure 1; the flanges D thus serve as guages to insure the
correct laying of the plates and also as dams to prevent water from being driven under
the flanges Bb b. E and F are the side edges of the shingles, the edge E is formed
by bending the plate a back upon itself at e, then bending it again in the reverse

page_text: direction at e¹ and again at e³ so as to form a spring flange et extending above the flat
band which extends between the folds e¹ and e³. The edge F is bent downward at
right angles to the plate at then again at right angles at 1 and terminates in a
flange of a breadth somewhat less than the distance between the edge of flange e
and the fold e¹. The edge F is inserted in the folds of the edge E as shown in Figure 2,
the spring flange et being compressed and serving to keep the flange 2 pressed against
the top of the fold e e', while it also engages the fold ff and forms a joint both tight
against rain and secure against displacement by contraction or accident.
Having now particularly described and ascertained the nature of my said inven-
tion, 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 :—
First: In a metallic roofing plate or shingle, the device of an elevated or struck-up
lower edge terminating in an arbupt downwardly bent flange decreasing in depth as
it extends from the centre to the edges of the shingle.
Second: In a metallic roofing plate or shingle, the device of an elevated or struck-
up lower edge terminating in an abrupt downwardly-bent flange, in combination with
a struck-up rib or projection formed along the medial line of the shingle.
Third: In a metallic roofing plate or shingle, the device of an elevated or struck-up
lower edge terminating in an abrupt downwardly-bent flange, in combination with
struck-up projections formed on the upper edge of the shingle and formed to conform
with the overlapping downwardly-bent flange of a similar shingle.
Fourth In a metallic roofing plate or shingle, the combination of an edge E
having the folds e e¹ e³ and the spring tongue e with an edge F having the folds ff¹
and the flange ƒ³.
A
1
T
1000