An Improvement connected with the Mitre Gear Wheels of Fuel Economiser Reversing Mechanism.
Year: 1892

page_text: Date of Application, 27th Dec., 1892
Complete Specification Left, 27th Sept., 1893—Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
An Improvement connected with the Mitre Gear Wheels of Fuel
Economiser Reversing Mechanism.
I, Sir EDWARD GREEN, Baronet, of Wakefield in the County of York, Fuel
Economiser Manufacturer, do hereby declare the nature of this invention to be as
follows:-
:—
.
According to the usual practice of employing mitre gear wheels in fuel
economisers, the pinion wheels on the reversing throw shaft has an amount of play
and produces unpleasant jingling noises and loud shocks at each reversing throw.
The object of my invention, is to obviate both the jingling and the shock noises
above alluded to, for which purpose, I form the hitherto open back rimmed mitre
wheels with close back rims, or employ what are known as shrouded mitre wheels
on the reversing throw shaft, it also prevents the bevel pinions from sliding in
violently and jamming the teeth in the other gear when forced in by the throw over
lever of the reversing gear at each reversal.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Sir Edward Green, Bart.
COMPLETE SPECIFICATION.
An Improvement_connected with the Mitre Gear Wheels of Fuel
Economiser Reversing Mechanism.
I, Sir EDWARD GREEN, Baronet, of Wakefield, in the County of York, Fuel
Economiser Manufacturer, 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 :-
According to the usual practice of employing mitre or bevel gear wheels in fuel
economisers, the pinion wheels on the reversing throw shaft has an amount of play,
and produces unpleasant jingling noises and loud shocks at each reversing throw.
The object of my invention is to obviate both the jingling and the shock noises
above alluded to, for which purpose I form the hitherto open backrimmed mitre
wheels with close back rims, or shrouded bevel or mitre wheels on the reversing
throw shaft, it also prevents the bevel pinions from sliding in violently and jamming
the teeth in the other gear when forced in by the throw over lever of the reversing
gear at each reversal.
The invention is represented on the annexed sheet of drawings.
Figure 1 is a front elevation of the usual reversing gear which operates the
scrapers
s of a fuel economiser but having shrouded mitre or bevelled gear wheels A, B,
on the shaft C, said shrouded wheels being alternately made fast and loose for the
reversing motion of the lever D which when moved over by the arm E carries the
clutch sleeve F with it. The clutches G, G, on the sleeve F engage alternately in
pockets or undercuts in, or against shoulders on, the bosses H, H, of the shrouded
wheels A, B, such engagement for the time being serving to make that mitre or
bevel wheel the fast or driver wheel to the chain gear wheel I.
Figures 2 and 3 show one of my shrouded mitre or bevel wheels for fuel
economiser scraper reversing gear, the use of which in the manner indicated by
Figure 1 obviates the unpleasant jingling noise while running and prevents shock
1 Prine 8,11

page_text: sounds escaping when the lever D drops and clutch sleeve F strikes home at each
reversing action.
I am well acquainted with the fact that shrouded wheels were well known at the
date of my present application for Letters Patent, and that they had been employed
in connection with well known machinery but the use of shrouded bevel or mitre
wheels with fuel economiser reversing gear, they have a special object viz.:-
preventing jingling, rattling, and shock sounds, as before mentioned.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is :-
The employment or use of close back rim or shrouded mitre or bevel gear wheels
on the reversing gear shaft of fuel economisers, as shown and as and for the
purpose or purposes herein before set forth.
The 27th day of September 1893.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Sir Edward Green, Bart.