IMPROVEMENT IN OR CONNECTED WITH SCREWS FOR ROLLING MILL STANDARDS
Year: 1885

page_text: We, JOSEPH CONWAY, Works Manager, DAVID RODERICK DAVID and LLEWELYN
HOWELL, Tin Plate Manufacturers, all of Taibach Tin Plate Works, Taibach
Glamorganshire, do hereby declare the nature of our invention for IMPROVEMENT
IN OR CONNECTED WITH SCREWS FOR ROLLING MILL STANDARDS, to be as
follows:-
The improvements consist in constructing the screw so as to enter the box from
underneath instead of from the top as at present, and for this purpose instead of
having a fixed collar and a large square on the top of the screw we propose to
make a suitable movable collar and a square sufficiently small to enable the screw
to be worked from the bottom to the top of the box to a sufficient length to receive
the loose collar for the support of the spanner. Instead of a loose collar, a spanner
with a collar fixed on it, or a spanner fixed by means of set pins may be used, or
any other suitable arrangement for working the screw may be adopted. The screw
is intended to be made with the point, for several inches, plain (or without thread)
and of the same diameter as the largest or outside diameter of thread, or larger as
thought fit. By this means a great deal of additional strength will be given to the
screw from upsetting. By this arrangement the screw, when damaged, can be
easily and expeditiously removed by simply taking off the collar and working
down the screw through the box. At present both box and screw have to be
removed and placed in a lathe to turn down the damaged point before removal can
be effected.
•

page_text: Standards.
We JOSEPH CONWAY, DAVID RODERICK DAVID, and LLEWELYN HOWELL, all of
Taibach Tin Plate Works, Taibach Glamorganshire, Tinplate Manufacturers 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 consist in constructing the screw, preferably as shown in the
annexed drawings, (in which figure 1 is a side elevation and figure 2 an end view)
so as to enter the box from underneath instead of from the top as at present and for
this purpose instead of having a fixed collar and a large square on the top of the screw,
we make a suitable movable collar a and a square or hexagonal head b sufficiently
small to enable the screw c to be introduced at the bottom, and worked to the top
of the box to a sufficient length to receive the loose collar d for the support of the
spanner. Instead of a loose collar a spanner with a collar fixed on it or a spanner
fixed by means of set pins may be used or any other suitable arrangement for
working the screw may be adopted.
The screw is made with the point or lower end d for several inches plain (or
without thread) and of the same diameter as the largest or outside diameter of the
thread, or larger as thought fit. By this means a great deal of additional strength
is given to the screw from upsetting.
By this arrangement, the screw when damaged, can be easily and expeditiously
removed by simply taking off the collar, and working down the screw through
the box.
At present both box and screw have to be removed and placed in a lathe to turn
down the damaged part before removal can be effected.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. Widening, or increasing the area or diameter of the lower part or end of
the screw pin in rolling mill standards, to attord greater strengun at the point of
pressure.
2. Adapting the pin for passing into or through the box, and also for being
withdrawn from the same; from below for convenience of repair or renewal.
3. Adapting the pin for passing into or through the box by making the upper
end of the pin of less diagonal measure than the smaller or interior diameter of the
screw thread of the pin, and also by dispensing with a fixed collar, a movable
collar being substituted or not, as required.
JOSEPH
CONWAY.
DAVID RODERICK DAVID.
LLEWELYN HOWELL.
Herbert & Co., Agents.