Year: 1897

page_text: Date of Application, 4th Aug., 1897
Complete Specification Left, 4th May, 1898-Accepted, 11th June, 1898
I, SAMUEL EDWARD HASKIN, of 2, Deans Yard, Westminster, in the County of
London, Manufacturer, do hereby declare the nature of this invention to be as.
follows:-
This invention relates to certain improvements in apparatus for use in treating
wood and more especially to apparatus in which the wood is placed in a chamber
and exposed to the action of heated air caused to circulate under pressure in such
chamber.
In such apparatus it is necessary or desirable to hermetically close the chamber
after the charge of wood has been placed therein and in as much as such chamber is
usually of large extent and the door thereof heavy and difficult to manipulate so
as to secure exact closure, it is desirable to provide means by which such door may
be moved into or from its closing position and tightly secured when in place with
the smallest waste of time and expenditure of labour.
It is also of great importance to distribute the air current in the chamber and
cause it to move therein or there through in such a way as to operate uniformly
and efficiently on or in respect of all the wood therein and it is also necessary to
so arrange any such means of distributing the air in such a manner that it may
not serve as an obstacle to the insertion and removal of the charge of wood.
I provide for these objects according to the improvements hereinafter described.
Such chambers being in the form of horizontal cylinders having usually one
fixed end head and one removable end head or door, I place above the end of the
cylinder where the head or door is removable, bearings for a horizontal_shaft
carrying arms, to one of which the door is centrally attached and to the other or
others counter weights, and to the shaft I also apply a toothed wheel or sector
with pinion or toothed wheel train and crank by which the shaft may be partially
revolved by hand sufficiently to bring the door into its closing position or to lift it
outwards and upwards until it extends horizontally or obliquely away from the
cylinder end at a sufficient height to enable the truck loads of timber to be freely
run into or out of the chamber.
Around the cylinder end is a series of staples and the door preferably bellied
inwards is carried by a central spindle having fixed bearing in the end of its sup-
porting arm. On this spindle, part of which is screw threaded there is adjusted a
screw threaded nut in one or more parts engaging a collar movable longitudinally
but not rotarily on the spindle. To this collar are attached radiating arms
guided radially upon the outside of the door and adapted, when the door is closed,
to stand respectively opposite the staples aforesaid on the cylinder end. In such
position, by the rotation of the nut and the consequent movement of the collar
along the spindle towards the door, the radiating arms are forced outwards into

page_text: said staples and acting as wedges or as levers cause the door to be firmly and
forcibly pressed against its seat at the end of the cylinder.
To revolve the nut, the exterior of the latter may be toothed to engage a toothed
pinion on a prismatic shaft carried on bearings in the arm and sliding collar and
revolved by a hand crank directly or through suitable gear.
In order that the current of air may be efficiently directed in and along the
cylindrical chamber, it is brought into the chamber from the heating stove
through a pipe extending the length of the cylinder inside the latter preferably
along the bottom of the cylinder, this pipe terminating at or near the door of the
cylinder with an open end. A removable diaphragm if fitted across the cylinder
in such a manner as to form an end compartment between it and the closed door
into which compartment the aforesaid pipe extends. The diaphragm is perforated
to suitably break up the stream of air on its passage from this compartment into
the main chamber of the cylinder. The air passes out of the main chamber
through a similar, but preferably fixed perforated diaphragm into a compartment
at the other end of the cylinder whence it is drawn to the heating stove.
To enable the removable perforated diaphragm to be taken out and replaced at
the same time as the door and by the same action it may be fastened to the door by
suitable distance bolts and it will be cut to such shape that it will clear the parts
of the cylinder and the pipe when moving into and. from the latter and when in
place to compensate for such clearance it may rest against a flange or seating in
the cylinder.
11th 4th
August 1907
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand. London.
I, SAMUEL EDWARD HASKIN, of 2, Deans Yard, Westminster, London, Manu-
facturer, 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:-
This invention relates to certain improvements in apparatus for use in treating
wood and more especially to apparatus in which the wood is placed in a chamber
and exposed to the action of heated air caused to circulate under pressure in such
chamber.
In such apparatus it is necessary or desirable to hermetically close the chamber
after the charge of wood has been placed therein and inasmuch as such chamber is
usually large and the door thereof heavy and difficult to manipulate so
as to secure exact closure, it is desirable to provide means by which such door may
be moved into or from its closing position and tightly secured when in place with
the smallest waste of time and expenditure of labour. It is also of great impor-
tance to distribute the air current in the chamber and cause it to move therein in
such a way as to operate uniformly and efficiently on all the wood therein and it
is also necessary to so arrange any such means of distributing the air in such a
manner that it may not serve as an obstacle to the insertion and removal of the
charge of wood and to the closing and opening of the door.
I provide for these objects according to the improvements hereinafter described.
Such chambers being in the form of horizontal cylinders A Fig. 4 having usually
one fixed end or head C and one removable end or door B, I place above the end
of the cylinder A where the door B is, bearings D Fig. 1 for a horizontal shaft E

page_text: carrying arms F & G, to one of which (F) the door B is centrally attached and to
the other or others (G) counter weights H and to the shaft I also apply a toothed
wheel or sector J with pinion K or toothed wheel train and hand wheel L by which
the shaft E may be partially revolved by hand sufficiently to bring the door B
into its closing position (as in Figs. 1-to 3) or to lift it outwards and upwards until
it extends horizontally away from the cylinder end at a sufficient height to enable
the truck loads of timber to be freely run into or out of the chamber A.
Around the cylinder end is a series of adjustable staples M, and the door B
preferably bellied inwards is carried by a central spindle N having fixed bearing
in the end of its supporting arm F. On this spindle, part of which is screw
threaded at O there is adjusted a screw threaded nut P in one or more parts,
engaging a collar Q movable longitudinally but not rotarily on the spindle. To
this collar are attached radiating arms R guided radially upon the outside of the
door B in guides S fitted with rollers T and adapted, when the door is closed, to
stand respectively opposite the staples M aforesaid on the cylinder end.
position, by the rotation of the nut P and the consequent movement of the collar Q
along the spindle N towards the door B, the radiating arms R are forced outwards
into said staples M acting as wedges or as levers cause the door to be firmly and
forcibly pressed against its seat at the end of the cylinder.
In such
To revolve the nut P the exterior of the latter may be toothed as at U to engage
a toothed pinion V adapted to slide along a prismatic shaft W carried in bearings
in the armi F and sliding collar Q and revolved by a hand crank directly or through
suitable gear X Y. Z is a lock nut for use if desired. In order that the current
of air may be efficiently directed in and along the cylindrical chamber, it is
brought into the chamber from the heating stove through a pipe a extending the
length of the cylinder A inside the latter preferably along the bottom of the
cylinder, this pipe terminating at or near the door of the cylinder with an open
end b. A removable diaphragm c is fitted across the cylinder in such a manner
as to form an end compartment d between it and the closed door B into which
compartment the aforesaid pipe a extends. The diaphragm is perforated to
suitably break up the stream of air on its passage from this compartment into the
main chamber of the cylinder. The air passes out of the main chamber through
a similar, but preferably fixed perforated diaphragm e into a compartment fat
the other end of the cylinder, whence it is drawn at g to the heating stove.
To enable the removable perforated diaphragm c to be taken out and replaced
at the same time as the door B and by the same action, it may be fastened to the
door and it will be cut to such shape that it will clear parts of the cylinder and
the pipe when moving into and from the latter, and when in place to compensato
for such clearance it may rest against a flange or seating h in the cylinder.
As the air current being hot, has a tendency to move along in the top of the
cylinder, it is desirable, at intervals to draw off the colder air from the bottom,
for which purpose there are provided a series of cocks jj (Figs. 1 and 4) with any
suitable gear such as k l m n o for opening and closing them by hand.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
In apparatus for treating wood and the like.
1. The combination with a chamber A of a removable door B at one end thereof
pivoted and counterbalanced arm F, a shaft N connecting said door to the arm F,
screw threads O on said shaft a sleeve Q adapted to slide thereon, a nut P con-
nected to said sleeve Q and engaging said screw threads, a series of arms R
radiating from said sleeve Q and a series of staples M surrounding said chamber A
and adapted to receive said arms substantially as and for the purpose set forth.
2. The combination with a chamber A and removable door B of a perforated
plate C removable with said door and adapted when the door is closed to partition
off a compartment d at the end of the chamber A, a seating h for said plate c, a

page_text: pipe a opening into said compartment d, a perforated plate e at the other end of
said chamber A partitioning off a compartment f and an outlet g to said com-
partment substantially as and for the purpose set forth.
Dated this 4th day of May 1898.
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, London.