IMPROVEMENTS IN GLOBE HOLDERS FOR GAS AND OTHER BURNERS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Joseph Chatwin and Henry Shipway
at the Office of the Commissioners of Patents on the 5th September 1881.
JOSEPH CHATWIN and HENRY SHIPWAY, both of Hay Mills, in the County of
Warwick. "IMPROVEMENTS IN GLOBE HOLDERS FOR GAS AND OTHER BURNERS."
Our Invention is for the purpose of providing simple and efficient holders for
supporting the glass or other globes of gas or other burners, whereby greater
security is afforded to such globes with at the same time sufficient freedom of
action for their expansion and contraction, while the modes of fastening are so
simple that the globes may be fixed or removed very quickly.
Globe holders are usually made with three arms radiating from the burner for
carrying the globe, two of the arms being notched at their ends to receive the
bottom edge of the globe, while the third arm carries a thumb screw which sets up
against the outside or inside of the globe. These screws are often the cause of the
globes breaking when expanding under heat.
Now our globe holders are made as regards the first modification with two of
the arms in the same manner as before, viz., with a notch to receive the bottom
edge of the globe, but the third arm is plain on its surface where the edge of the
globe rests.
We secure the globe in its position by means of an internal button,
screw hook, or excentric pin, which is inserted from the lower side of the third
arm of the holder inside the inner edge of the globe. Take, for instance, the thumb
screw hook, the neck of the shank before it is bent over is screwed with a short
thread, and the hole in the third arm of the holder is tapped with a corresponding
thread to receive it. The screw is then inserted and run nearly up to its shoulder
when the point is bent over to the angle of the inside of the globe.
A collar top
and bottom will answer the same purpose as the screw thread, that is, it will
prevent the thumb screw from dropping down, but the thread is perhaps a little
the cheapest. We regulate or limit the travel of the thumb screw, or excentric, or
button by means of a stud fixed in the third arın at the back of the said button,
hook, or excentric pin, so that the flats on the thumb screw or button stand
at an angle with the third arm when the globe is not fixed, but quite parallel
with the said arm when the globe is fast in its proper position.
We also make globe holders which do not require any screw or button to fasten
them, while they hold the globe firmly; these we call our flexible holders.
We

page_text: use by preference three arms, which are all made from steel or other wire or thin
metal which is capable of retaining its elasticity. Each of the three arms are bent
round with a complete curl or other curve sufficient to give considerable spring or
flexibility to each of the three arms, although when preferred two might be stiff
and one only flexible. The flexible arms have one of their ends secured to the
burner boss, and the other outer ends are mounted with double V pieces, so that an
inclined surface is presented to the bottom edge of the globe as it is dropped on to
the holder, and it is thus guided into the lower V recess. A little pressure of the
arm or arms towards the centre boss will reduce the diameter of the holder
sufficiently to release the globe. These holders always hold the globes with a
slight outward pressure, so that the expansion of the globe by heat is followed by
the arms of the flexible bolder.