Improvements in Hand Wheels for Valves.
Year: 1895

page_text: Date of Application, 28th June, 1895
Complete Specification Left, 26th Mar., 1896-Accepted, 27th June, 1896
PROVISIONAL SPECIFICATION.
Improvements in Hand Wheels for Valves.
BENJAMIN RHODES 240 Bow Road London E. do hereby declare the nature of
this invention to be as follows:-
Hard wheels made of metal being quick conductors of heat are liable to burn
the hand when used for regulating the flow of hot fluids or vapour and various
means have been devised to obviate this viz. the use of wood, ebonite, vulcanite,
rubber, &c. all of which have proved unsatisfactory owing to defective construction.
The object of my invention is to produce a hand wheel that will be a very slow
conductor of heat firm and lasting in work and not liable to split as wheels made of
wood and other fragile materials are apt to do.
In carrying out this my invention I make a metal centre of suitable form having
a groove in the edge to receive and hold in position a non-conducting material
which forms the rim of the wheel and may be of various substances as ebonite,
vulcanite, asbestos compound, rubber compound, rubber, or American fibre.
The non-conducting material while in a soft or plastic state and before vulcaniza-
tion is placed in a mould of the desired size and shape to receive the metal
centre and hold and keep the plastic material in proper shape during the process of
vulcanization, after which the article may be removed from the mould and cleaned
off or polished.
To prevent any possibility of the outer rim becoming loose and turning round in
the metal groove I cast in the said groove spikes or notches or holes which become
firmly imbedded in the outer rim of non-conducting material.
Dated this 27th day of June 1895
B. RHODES.
I, BENJAMIN RHODES of 240 Bow Road London E, Brassfounder &c. 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 object of this my invention is to produce a hand wheel, that will be a very
slow conductor of heat, firm and lasting in work and not liable to spilt as wheels
made of wood and other fragile materials are apt to do.
In carrying out this my invention I make a metal centre of suitable form having
a groove or grooves in the edge to receive and hold in position a non-conducting
material which forms the rim of the wheel and may be of various substances as
ebonite, vulcanite, asbestos compound, rubber compound or rubber.
The non-conducting material while in a soft or plastic state and before vulcaniza-
tion is placed in a mould of the desired size and shape to receive the metal centre
and hold and keep the plastic material in proper shape during the process of
vulcanization after which the article may be removed from the mould and cleaned
off or polished. To prevent any possibility of the outer rim becoming loose and
turning round in the metal groove I cast in the said groove spikes or notches or
holes which become firmly imbedded in the outer rim of non-conducting material.

page_text: The drawings as herein described will shew how this my invention may be
carried out but I do not confine myself to the exact forms and sizes given
therein.
Figs. 1 and 2 (Sheet 1) shew section and plan of wheel a being the metal centre
or skeleton and the non-conducting covering. The covering may be moulded
plain at the edge or milled as shewn at c.
Figs. 3 & 4 (Sheet 2) shew section and plan of wheel with the metal centre or
skeleton of slightly different form d being the metal centre or skeleton and e the
non-conducting covering.
As hereinbefore stated I do not confine myself to any particular non-conducting
material but I prefer for this purpose the fibrous compounds as substantially set
forth in previous specifications and for which Letters Patent were granted to me
Number 1334-1879 and 5363-1889 because of its strength and non-liability to
fracture and because it will admit of considerable variation in its admixture
according to requirements and having regard to the particular uses for which it is
intended.
I am aware that the actual moulding into form of non-conducting substances is
not novel as it is being done every day in a multitude of forms.
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:
The moulding or covering of metal skeletons of wheels of any desired form with
a non-conducting material the same forming part of the wheel for hand purchase to
be used for the opening and closing of valves and cocks for manufacturing and
domestic purposes and to prevent the hand of the user from being burnt or
injured.
Dated this 26th day of March 1000
B. RHODES.