Improvements in or connected with Draw Plate Ovens.
Year: 1896

page_text: Date of Application, 28th Nov., 1896
Complete Specification Left, 3rd May, 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Draw Plate Ovens.
We, WILLIAM PRICE of Montague Road, Smethwick in the County of
Stafford, Baker, JAMES HORTON of Sankey Street, Warrington, in the County of
Lancaster, Baker and EDWIN PRICE of Jessel Street, Walsall, in the County
of Stafford, Baker, do hereby declare the nature of this invention to be us
follows:-
This invention relates to improvements in what are known as draw plate ovens
for the purpose of enabling the plate to be drawn out of and pushed back into the
oven with the least amount of exertion and for enabling the draw plate to travel
the full distance without the wheels upon which it is supported when inside the
oven, travelling beyond the front of the oven and without the intervention of any
travelling rails or elongated or projecting rails to support such wheels.
In carrying out our improvements we construct the oven with rigid or fixed rails
running longitudinally therein. Upon these rails we place two three or more (according
to the size of the oven) rollers which are free to roll backwards and forwards over
the fixed rails within certain limits. These limits are determined by stops fitted or
fixed to the rails. Upon the ends or other position on these rollers we place two
or more wheels or pulleys of considerably larger diameter than the rollers which
fit beside the fixed rails but do not rest upon them but which rotate with the
rollers as they traverse the fixed rails. The draw plate rests upon these wheels or
pulleys and is provided with suitable guides or bars with grooves or the like to
prevent lateral movement.
The draw plate rolls backwards and forwards over the wheels or pulleys but
inasmuch as the circumference of the wheels are greatly in excess of that of the
rollers as the plate is moved it traverses a great deal further during one revolution
of the wheels than do the rollers along the fixed rails. Hence it follows that the
draw plate may be drawn completely out of the oven while the distance travelled
by the rollers does not bring the front one beyond the front of the oven and
therefore no rail extension or projection beyond the oven is required to carry it.
The front edge of the draw plate when it emerges from the oven may be supported
on a loose movable trolly running on rails in the floor or may be supported from an
overhead trolly if desired or in any other suitable manner which does not entail
projecting or supported rails in front of the oven door.
Dated this 27th day of November 1896.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: to the back edge stops G and we elongate the ends d of the front rollers D so
that the stops G come in contact therewith when the draw plate B is drawn out to
the full extent.
The front edge of the draw plate when it emerges from the oven may be supported
on a loose movable trolly running on rails in the floor or may be supported from an
overhead trolly if desired or in any other suitable manner which does not entail
projecting or supported rails in front of the oven door.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In a draw plate oven the combination with a draw plate and fixed rails by
which it is supported of rollers rolling over the rails with wheels or pulleys of
larger diameter over which the draw plate rolls so that the distance travelled by
the draw plate greatly exceeds the distance travelled by the rollers over the rails
substantially as described.
2. A draw plate oven constructed and arranged substantially as described and
shown.
Dated this 02-1 d... of Al 1907
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.