Improvements in Fire-extinguishing Apparatus.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Fire-extinguishing Apparatus.
1, THOMAS RAWSON, of Paterson, County of Passaic and State of New Jersey,
United States of America, Mechanical Engineers, do hereby declare the nature of
my said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to provide a water tower, on an aerial truck with
a hose and nozzle which can be directed and operated from the foot of the tower,
simple and cheap in construction easily adjusted and not liable to get out of order.
The invention consists in the improved water tower attachment, combining therein
a nozzle attached to the upper end of a hose secured to the side of the ladder of an
aerial truck, means for adjusting said nozzle and the arrangement and combination
of the various parts as will be hereinafter more fully described and finally embodied
in the claim.
Referring to the accompanying drawings in which like letters of reference
indicate corresponding parts in each of the several figures: Fig. 1 is a side elevation
of a portion of a water tower with my improved attachment thereon, Fig. 2 is a
front elevation of Fig. 1 looking from right to left, only a part of the hose and
part of the adjusting mechanism being shown; Fig. 3 is a sectional view on line <<<
Fig. 1 ; and Fig. 4 is a sectional view on line y Fig. 3.
In said drawings (a) represents a ladder of an aerial truck, secured thereto in the
usual manner the connection and the truck not being shown in the drawings. To
the side of the ladder is adjustably secured a hose (6) and to upper end of said hose
a nozzle (c) pivoted at (c¹) to bracket (d), the latter extending from and being
secured to ladder (a). The outer end of said nozzle is threaded and adapted to
connect with another line of hose or an extension nozzle. The nozzle (c) is also
provided on its underside with lugs (e, e') to which are secured the wire
ropes (f). The lower ends of said ropes are attached to rods (g, g') having
their lower portions threaded (both in the same direction) and adapted to engage
internally threaded hubs (n, o) carrying gear wheels (h, h). The hubs (n, o)
have on their lower ends a reduced extension (n', o¹) adapted to revolve in frame (k)
which latter is secured by bolts or in any desired manner to ladder (a). The hubs
with their extensions are kept in place by collars (n³, o³) as shewn in Fig. 4.
The upper portion of rods (g, g) are squared at (g, g³) to prevent their turning
when the gear wheels are operated and are guided by passing through corresponding
openings in bracket (A), the latter being secured to frame (k) and ladder (a), as
shewn in Figs. 1 and 3. To hub (o) is also secured a hand wheel (i) for operating
the adjusting mechanism. The operation of my device is as follows:-By rotating
the hand wheel (1), the gear wheels (h, h') are caused to revolve in opposite
directions and by their internally threaded hubs (n, o) produce an opposite vertical
motion to each of the rods (y, g¹). This motion is transmitted to the nozzle (c) by
means of the wire ropes (ſ, ƒ¹) thus allowing the said nozzle to be raised or
lowered and to be held in any desired position.
I do not intend to limit myself to the construction shewn and described as
various changes can be made without changing the scope of my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a water tower, the combination with a ladder, of a hose adjustably secured
to the side of said ladder, threaded rods arranged at the foot of the ladder and
narallel therewith, wire ropes connecting said rods with the said nozzle and gear

page_text: wheels controlling the motion of said rods, all said parts being arranged and adapted
to operate substantially as described and set forth."
2. In a water tower the combination with a ladder, of a hose adjustably secured
to the side of the ladder, a nozzle connected to said hose and pivotally secured to a
bracket on said ladder, gear wheels adapted to mesh into each other, threaded rods
adapted to be operated by said gear wheels and wire ropes connecting said rods
with the nozzle, all said parts being adapted to operate substantially as described
and for the purposes set forth.
3. In a water tower the combination with a ladder, of a hose adjustably secured
to said ladder, a nozzle connected to said hose and pivoted to said ladder, gear
wheels meshing into each other, a frame s secured to the foot of the ladder and
serving as a support for said gear wheels, rods provided on their lower portions
with threads and adapted to be operated by the said gear wheels, guides for said rods,
a hand wheel operating said gear wheels and wire ropes to connect said rods with
the nozzle, substantially as described and for the purpose set forth.
Dated bis zu any of December 1001
BONNE & Co.,
57 & 58, Chancery Lane, London, W.C.,
Authorised Patent and Trade Mark Agents.