Improvements relating to the Construction of Gas-holders.
Year: 1888

page_text: ec., 1883
Date of Application, 12th
Complete Specification Left, 2nd Aug., 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements relating to the Construction of Gas-holders.
We, WILLIAM GADD, of 64 Barton Arcade, Manchester, Civil and Consulting
Engineer, and WILLIAM FREDERICK MASON, of Birch Lane, Longsight, Manchester,
Engineer, do hereby declare the nature of this invention to be as follows:-
--
The improvements relate to the construction of gasholders, and have for object the
supporting of the same in their working position, in such a manner as to enable the
external or upper guide framing hitherto employed for that purpose to be dispensed
with, and yet to give the requisite stability; although such, or a modified form of
framing may be employed in connection with the improvements herein described, when
desired.
To accomplish this and to effect our improvements we fix round the face of the
tank or well a series of vertical guides which are constructed in the form of racks or
mechanical equivalents therefor. At corresponding intervals round the lower curb or
ring of the holder, we mount, on suitable shafts' or studs, pinion, mitre, or other
toothed wheels or mechanical equivalents thereof, which gear into the 'racks
aforesaid.
These wheels are, by preference, all likewise geared together, in such manner. that
when one is caused to turn the whole will turn therewith and to. the same extent.
By which means, if the holder carrying these geared up wheels moves 'upwards or
downwards it will be sustained' in the same relative position at all heights.
The like result we also obtain by fixing the vertical racks or equivalents to
the outer face of the holder, and the pinion, mitro, or other wheels round the.
top of the tank, and in like manner the method may be extended to telescopic
holders.
The wheels which take into the guides may be geared together either by shafts,
intermediate between, in suitable journals, or by means of intermediate wheels,
in train, round the circle, or by chain or link gearing; and instead of the
whole of the wheels being geared together, portions thereof may be geared as a
modification.
Other variations in detail may be made without departing from the peculiar
character of the invention.
בזי
T
1000
COMPLETE SPECIFICATION.
Improvements relating to the Construction of Gas-holders.
We, WILLIAM GADD, of 64 Barton Arcade, Manchester, Civil and Consulting
Engineer, and WILLIAM FREDERICK MASON, of Longsight, Manchester, 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:
The improvements relate to the construction of Gas Holders, and have for object
the supporting of the same in their working position, in such manner as to
enable the external or upper guide framing hitherto employed for that purpose to be
dispensed with, and yet to give the requisite stability; although such, or a modified
form of framing may be employed in connection with the improvements herein
described, when desired.
וי
To accomplish this and to effect our improvements we fix round the face of the

page_text: tank or well a series of vertical guides which are constructed in the form of racks,
or mechanical equivalents therefor, (such as vertical screw shafts of coarse or quick
thread, or vertical endless chains or bands passing over and between pulleys or wheels
at or near the top and the bottom of the tank or holder, as the case may be). At corre-
sponding intervals round the lower curb or ring of the holder, we mount on suitable
shafts or studs, pinion, mitre, or other, toothed, wheels or mechanical equivalents
therefor, (such as notched wheels, or in some cases plain wheels or pulleys) which gear
into or with the racks or equivalents aforesaid.
These wheels are, by preference, all likewise geared together, in such manner that
when one is caused to turn, the whole will turn therewith and to the same
extent. By which means, if the holder carrying or connected with these geared
up wheels moves upwards or downwards,, it will be sustained in the same; relative
position at all heights.
The like result is, also obtained by fixing the vertical racks, or equivalents as
aforesaid, to the outer face of the holder, and the pinion, mitre or other wheels round
the top of the tank; and in like manner, the method may be extended to telescopic
holders.
The wheels which take into the guides, may be geared: together, either by shafts,
intermediate, between, and turning in suitable journals; or by means of intermediate
wheels in train or by plain chain or rope, or link-chain gearing; and instead
of the whole of the wheels being geared together, portions thereof may be geared
as a modification.
Other variations in detail may be made without departing from the peculiar.
character of the invention, which consists in connecting, by means of torsional or
tensional, gearing, a number of points round the bottom curb of a gas holder; in
such manner that, when one, point thereof tends. to rise or fall the same tendency is
transmitted, through such gearing, round the circle, to every. other point.
But that the invention may, be better understood we will, by aid of the accom-
panying drawings proceed more, fully to describe means employed by us.

page_text: But this form of gearing also may be either attached as shewn to the tank wall,
or to the holder side in reverse. Figs. 7 and 8 shew this variety with horizontal
wheels geared in train.
In Figs. 9 and 10 part link chain gearing is shewn and part screw rack or shaft
gearing; while in Figs. 11, 12, 13, 14, 15 and 16 examples of gearing by means of
plain chain or wire or other rope gearing with plain wheels or pulleys are shewn ;
but combinations of two or more of these varieties may be employed.
When the plain chain or rope gearing, is attached to the holder, the vertical chain
or chains is or are attached at suitable points, as at e, e, to the tank side; while if the
chain or rope gearing is attached to the tank wall, the chain or chains is or are
attached at suitable points, as at e, e, to the bottom curb of the holder. Suitable
devices for tightening the tension gearing may be employed, by raising or
lowering the wheels, or some of them, as will be readily understood, and which are
not necessary to be shewn.
It will be obvious that other varieties of arrangements of gearing may be employed,
both torsional and tensional, and combinations thereof, which, like those shewn, are
mechanical equivalents of each other, the object and operation of all of them being to
gear the different actuating points round the circle of the holder together, in such
manner that when the holder carrying or carried by the geared wheels-whether
toothed or plain, and fixed at intervals round the circle,-moves upwards or down-
wards, it will be sustained in the same relative position at all heights. The ring of
gearing whether torsional or tensional may be complete or partial, or in sections, and
the wheels may be arranged either tangentially, radially, or in any angle which may
be desired, and the tank and bolder may be, and are by preference to ensure easy
working, fitted with rollers and plain guides, in addition to the gearing shewn and
described, without departing from the peculiar character of the invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The employment of torsional gearing arranged round a gas holder or gas holder
tank, which gearing connects or gears together points upon and at intervals around
such holder, so that one point moving upwards or downwards communicates through
such gearing the tendency of motion to the other points round the holder, for the
purpose and in manner substantially as herein shewn and described.
2. The employment of tensional gearing arranged round a gas holder or gas
holder tank, which gearing connects or gears together points upon and at intervals
around such holder, so that one point moving upwards or downwards communicates
through such gearing the tendency of motion to the other points round the holder, for
the purpose and in manner substantially as herein shewn and described.
3. The employment of torsional and tensional gearing combined, arranged round
a gas holder or gas holder tank, which gearing connects or gears together points
upon and at intervals around such holder, so that one point moving upwards or
downwards communicates through such gearing the tendency of motion to the
other points round the holder, for the purpose and in manner substantially as herein
shewn and described.
Dated this 21st day of Inl„ 1000
WILLIAM GADD, C.E.,
Agent.