Improvements in or connected with Cylinders or Vessels for Curing Bacon and Hams, for Creosoting Wood, and for similar purposes.
Year: 1896

page_text: Date of Application, 27th June, 1896
Complete Specification Left, 11th Mar., 1897-Accepted, 15th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Cylinders or Vessels for
Curing Bacon and Hams, for Creosoting Wood, and for
similar purposes.
I, EVAN ROBERTS DOWN, of Station Yard, Gillingham, in the County of
Dorset, Bacon Curer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to cylinders or vessels such as are used for curing bacon
and hams in the manner described in the Specification of my Application No. 18662
of 1895 for creosoting wood and for other purposes and wherein a door or cover is
applied with a hermetic joint, the object of my invention being to provide improved
means for quickly drawing the cover tightly against the joint surface and releasing
it when it is to be removed.
According to my invention I provide for forcing or drawing the cover into tight
contact with the adjacent joint surface by hydraulic pressure and I advantageously
accomplish this by arranging behind the flange against which the cover joints a
series of hydraulic rams each of which carries a cross head upon which is pivotally
mounted a stirrup, the several stirrups being designed to enter slots in the cover
and to engage with the latter in such a manner that when the hydraulic rams are
operated the stirrups will draw the cover firmly against the joint surface.
Dated the 27th day of June 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in or connected with Cylinders or Vessels for
Curing Bacon and Hams, for Creosoting Wood, and for
similar purposes.
I, EVAN ROBERTS DOWN, of Station Yard, Gillingham, in the County of
Dorset, Bacon Curer, 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 invention relates to cylinders or vessels such as are used for curing
bacon and hams in the manner described in the Specification of former Letters
Patent granted to me No. 18662 of 1895, for creosoting wood and for other
purposes and wherein a door or cover is applied with a hermetic joint, the object of
my invention being to provide improved means for quickly drawing the cover
tightly against the joint surface and releasing it when it is to be removed.
According to my invention I provide for forcing or drawing the cover into tight
contact with the adjacent joint surface by hydraulic pressure and I advantageously
accomplish this by arranging behind the flange or surface against which the cover
joints a series of hydraulic rams each of which carries a crosshead upon which is
pivotally mounted a stirrup, the several stirrups being designed to enter slots in
[P1

page_text: the cover and to engage with the latter in such a manner that when the hydraulic
rams are operated the stirrups will draw the cover firmly against, the joint
surface.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a side elevation of a cylinder the cover of which is designed to be
fixed in accordance with my invention:
Figure 2 is a vertical section drawn to a larger scale than Figure 1 of the end
of the vacuum chamber and the door; and,
Figure 3 is an elevation of the door :
Figure 4 is a plan partly in section shewing one of the hydraulic rams drawn to
a larger scale:
Figure 5 is a side view of the same; and,
Figure 6 is a section on the line 6-6, Figure 4.
a is the cylinder to be closed, and 6 is the removable door or cover which is to
be hermetically jointed against the end of the said cylinder. As shewn the inner
face of the door is provided with a circular recess c containing suitable packing
material d against which the projecting end of a ring e on the end of the cylinder
is designed to press, when the door is placed in position for closing the said
cylinder.
Rivetted or otherwise suitably attached to the cylinder a is a series of hydraulic
cylinders k, k, the rams 1, 1 working in which are each packed with a cup leather m
in the ordinary manner. At its outer end each ram is rigidly attached to a
crosshead n provided with a guide rod o working in a guide p secured to the
cylinder.
9, 9 are links pivotally mounted upon the crosshead to which they are connected
by screws and plates q, q', the said links being formed at their free ends with
heads r, r and being designed to enter slots s, s formed in lugs t, t on the edge of
When the cover being in place against the end of the cylinder and the
links 9, 9 being turned down to engage with the slots therein, the rams are operated
the said links will draw the said cover tightly into contact with the end of the
cylinder.
the cover.
In practice it is advantageous to connect all the cylinders with a common
accumulator so that they shall be operated simultaneously.
It will be obvious that the arrangement hereinbefore described possesses great
advantage over the arrangement wherein a cover is fixed by means of nuts upon
studs projecting from the end of the cylinder.
In Figure 11 shew an overhead carrier connected to the cover and serving to
run the said cover away from the face of the cylinder when the links are disengaged
therefrom.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The combination with a cylinder having a removable cover designed to be
jointed against the cylinder, of a series of hydraulic rams for forcing the cover into
tight contact with the said cylinder, substantially as described.
2. The combination with a cylinder having a removable cover jointed against it,
of a series of hydraulic rams carrying pivoted links designed to be connected
with and disconnected from slots in the said cover, substantially as hereinbefore
described and illustrated in the accompanying drawing.
Dated the 11th day of March 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.