Improvements in Trivets or Roasting Plates, and in the Manufacture of same.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Trivets or Roasting Plates, and in the Manufacture
of same.
THOMAS JOHNSON, 182, Newcastle Street, Burslem, Engineer, do hereby declare
the nature of this invention to be as follows:-
:-
My present invention, relates to improvements in what are known to the trade
as trivets or iron roasting plates, or hangers which consist of a flat metal plate
that slides horizontally on parallel bars with hooked ends for attaching same to
the bars of an ordinary grate, so as to hold a dish or other utensil for cooking
purposes. The object of my invention is to so arrange my improved plate, that
it may be so constructed or manufactured in a cheap and economical manner and
in such a form that it will give additional strength to the said plate which is
made in the following manner.
A sheet metal plate is cut to the required size preferably oblong and then bent
down at right angles on to the two opposite sides for about half an inch deep
so as to form brackets, and at the same time, give additional strength to the plate.
Through each of the turned down edges or brackets I pierce two holes at an
equal distance from the centre, of a size to admit of the ordinary horizontal and
parallel slide rods which support the aforesaid plate.
By this means I secure a more rigid plate and avoid the necessity of riveting
small brackets on the underside to form grooves in which the supporting rods
slide.
Having made the improved plate I slide it on to the horizontal parallel bars,
which have been previously prepared and finish off in the ordinary way.
Dated this 19th day of December 1899
THOMAS JOHNSON.
Improvements in Trivets or Roasting Plates, and in the Manufacture
of same.
I, THOMAS JOHNSON, of 180 and 182, Newcastle Street, Burslem, in the County
of Stafford, Cycle 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:-
:-
My present invention relates to improvements in and in the manufacture of
what are known to the trade as trivets, such trivets for instance as are made with
a metal plate that is free to slide horizontally on parallel bars made with hooked
Price I

page_text: ends so as to be easily hung on or attached to the bar of an ordinary domestic fire
grate for the purpose of supporting a plate, dish or other cooking utensil: and
the object of my present invention is to form the said sliding plate that it will
obtain greater strength than those hitherto generally manufactured without
additional weight and at the same time its upper surface will act as a preventative
to any ordinary sliding or slipping of the cooking utensil it supports, and in the
manufacture of my improved trivet the cost of manufacture is cheapened and they
are produced in a more economical manner than hitherto to attain which there-
fore I arrange and manufacture my improved trivet substantially in the manner
described by the aid of the accompanying drawings in which Fig. 1, is an isometric
perspective view of my improved trivet complete, and Fig. 2, is a cross sectional
elevation through the bearings of a modified form of sliding plate therefor.
Similar letters of reference denote corresponding parts in each view.
I cut a sheet of metal plate, A, to the required size (preferably oblong) and cor-
rugate the same either diagonally as shown at Fig. 1, or horizontally as shown
at Fig. 2, or it may be corrugated cross wise as will be well understood.
I then bend down to right angles flanges a at the two opposite edges of
plate, A, whereby suitable brackets are formed and at the same time additional
strength is given to the plate thereby.
Through each of the bent down edges, flanges or brackets a¹, I pierce two
holes at equal distance from centre of plate, and at a distance apart and of a size
to admit of any ordinary horizontal slide rods, B, for supporting the plate, A, to
bear therein as shown.
By this improved means I secure a more rigid plate and avoid the necessity of
rivetting small brackets to the underside to form bearings for the supporting rods
as hitherto.
Having now manufactured my improved plate, A, I slide it on to the said
parallel bars B previous to the bending up and over of the hook parts 61 thereof.
A handle a may be secured to the outer flange a¹ of plate, A, where desired.
In Fig. 2, the bent down flanges a' are substituted by bearings a³ which are
rivetted or otherwise attached to my improved corrugated plate, A, in an ordinary
way.
By corrugating the plate, A, as aforesaid considerable time is saved in its manu-
facture inasmuch as when cutting plates from the sheet as hitherto more or less
buckling takes place which can only be remedied by subsequent hammering,
whereas in the manufacture of my improved plate buckling is entirely avoided.
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. Making the sliding plate, A, of a trivet with bent down flanges a¹ and form-
ing holes in said flanges whereby the plate, A, is supported on and can slide on
the ordinary bars, B, substantially as described.
2. In combination with a trivet plate, A, made with bent down flanges a¹, the
corrugating either diagonally or in any other direction of said travelling plate, A,
substantially as described or any mere modification thereof.
T10
Cantauhan 1000
H. F. BOUGHTON,
Registered Patent Agent, 114A, Chancery Lane, London, W.C..