Improvements in and connected with Automatic Sprinkler Installations.
Year: 1894

page_text: Date of Application, 31st July, 1894--Accepted, 1st Sept., 1894
COMPLETE SPECIFICATION.
Improvements in and connected with Automatic Sprinkler
Installations.
I, THOMAS WITTER, of Crown Works, Bolton, in the County of Lancaster,
Engineer, 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 :-
In automatic sprinkler installations prior to my present invention it has been
necessary to cast or form sockets (paps as they are called in the trade) on the main
feed pipes for convenience in attaching the branch pipes which supply the automatic
sprinklers. To ascertain the exact positions where these paps must be cast on the
pipes has up to the present time been a source of great trouble and expense, and
the chief object of my invention is to obviate these drawbacks.
In carrying my improvements into effect I cast an iron pipe say of D or other
suitable section so as to form one flat side, and this flat side I cast of such a
thickness of metal as to admit of the pipe being drilled and tapped to receive the
screwed end of a branch pipe at any point desired.
As an alternative I might attain the object of my invention but in a minor degree
and less convenient form by casting a series of paps at such close intervals on the
main feed pipe as to permit of the insertion of a branch pipe at practically any
point, but I prefer the first mode described as by it greater accuracy and a better
appearance are obtained.
In the accompanying drawing forming part of this Specification-.
Figures 1 and 2 are a sectional end elevation and side view respectively of a pipe
made with a thick flat side for the purposes of my invention and Figs. 3 and 4 are a
side elevation and sectional end elevation respectively of a pipe made with an
almost continuous series of paps as an alternative according to my invention.
In Figs. 1 and 2,-a designates the pipe cast with a flat side a¹ and with an extra
thickness of metal to admit of drilling and tapping to receive branch pipes b at any
point required.
In Figs. 3 and 4, the pipe a is shown cast with an almost continuous series of
paps a² any number of which can be drilled and tapped to receive branch pipes b
practically at any points desired.
I have only shown and described a pipe with one flat side or with a continuous
series of paps on one side but it is obvious that the pipe may have more than one
flat side with an additional or sufficient thickness of metal cast thereon or may have
a continuous series of paps on more than one side.
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 :-
In an automatic sprinkler installation, the construction use and application of
pipes cast with a flat thick side or sides or with practically continuous paps to admit
of drilling and tapping for the insertion of branch pipes at any points required
substantially as herein set forth.
Dated this 30th dor of Jul 1901
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicant.