An Improved Method of Forming the Dovetail Junctions of Metallic Bedsteads.
Year: 1895

page_text: Date of Application, 20th Mar., 1895
Complete Specification Left, 20th Dec., 1895-Accepted, 8th Feb., 1896
PROVISIONAL SPECIFICATION.
An Improved Method of Forming the Dovetail Junctions of Metallic
Bedsteads.
We THOMAS MARK HEWITSON, GEORGE LANE and HENRY JOHN LANE of
the Firm of Lane Hewitson and Lane, Brueton Street Birmingham Wire Mattress
Manufacturers and SAMUEL ILSLEY WHITFIELD Watery Lane Birmingham
Manager do hereby declare the nature of this invention to be as follows:-
Our improvement consists of a new arrangement of the parts forming the
dovetail junctions of metallic bedstead sides & pillars & has for its object the
extension of the area of the bearing faces of the two dovetail castings &
the consequent increase of the stability of the parts when placed together & also
the bringing nearer together of the pillar & the angle iron or tubes forming the
bedstead sides and ends, which is an advantage in cases where the bedsteads are
used in combination with wire mattresses.
To effect our purpose we cast or form the hollow dovetail in the corner block of
the bedstead at the side of instead of in front of the tube forming the pillar so
that this tube may be no obstacle to its being brought as far backward in the
corner block casting as may be found convenient, we form a flat bearing surface in
front of the pillar in the place usually occupied by the hollow dovetail.
We make the casting on the bedstead side or frame with a much broader face
than usual one part of which fits against the flat bearing surface above described.
and one part of which has the projecting dovetail cast or formed on it in a
corresponding position so as to fit into the hollow dovetail formed in an improved
corner block-the two parts of the bearing surface not necessarily being in a
straight line one with the other. The respective positions of the dovetails may in
some cases be reversed.
-ears
We sometimes form, cast or attach-by laying in in the process of casting-
to an improved corner or dovetail block to admit of the tightening bolts or screws
necessary to attach a wire mattress to the bedstead & to tighten the same.
Dated this 18th day of March 1895.
THOMAS MARK HEWITSON.
GEORGE LANE.
HENRY JOHN LANE.
SAMUEL ISLE WHITFIELD.
SAMUEL ILSLEY WHITFIELD.
An Improved Method of Forming the Dovetail Junctions of Metallic
Bedsteads.
We, THOMAS MARK HEWITSON GEORGE LANE, and HENRY JOHN LANE of
the Firm of Lane Hewitson and Lane Brueton Street Birmingham Wire Mattress
Manufacturers and SAMUEL ILSLEY WHITFIELD of Hawkesley Moor Green
Lane Birmingham Manager also of Gladstone Works Watery Lane Birmingham
do hereby declare the nature of this invention and in what manner the same is

page_text: to be performed, to be particularly described and ascertained in and by the
following statement :-
Our improvement consists of a new arrangement of the parts forming the
dovetail junctions of metallic bedstead sides pillars and has for its object the
extension of the area of the bearing faces of the two dovetail castings and
the consequent increase of the stability of the parts when placed together and also
the bringing nearer together of the pillar and the angle iron or tubes forming the
bedstead sides and ends which is an advantage in cases where the bedsteads are
used in combination with wire mattresses. To effect our purpose we cast or form
the hollow dovetail in the corner block of the bedstead at the side of instead of in
front of the tube forming the pillar so that this tube may be no obstacle to its
being brought as far backward in the corner block casting as may be found
convenient, we form a flat bearing surface in front of the pillar in the place usually
occupied by the hollow dovetail.
We make the casting on the bedstead side or frame with a much broader face
than usual one part of which fits against the flat bearing surface above described
and one part of which has the projecting dovetail cast or formed on it in a
corresponding position so as to fit into the hollow dovetail formed in an improved
corner block the two parts of the bearing surface not necessarily being in straight
line one with the other.
The respective positions of the dovetails may in some cases be reversed.
We sometimes form cast or attach by laying in the process of casting ears to an
improved corner or dovetail block to admit of the tightening bolts or screws
necessary to attach a wire mattress to the bedstead and to tighten the same.
In order that our invention may be clearly understood & more easily carried
into practise we have appended hereunto a sheet of drawings upon which we have
fully illustrated the nature of our said invention.
Figure 1 is a sectional plan of the junction.
Figure 2 is a perspective view of same.
Figure 3 is a plan of one of our bedsteads with a woven wire bed bottom which is
partly broken away.
Figure 4 is a view shewing the combination of an arrangement for tightening
up the mesh of the bottom.
In carrying our invention into effect we form the dovetail recess 6' in the corner
block B of the bedstead but instead of placing it in front of the pillar C we
arrange it at the side as shewn in Figure 1 the casting A on the bedstead frame
being provided with a broader face than usual so that one part H' to H2 fits
against the flat bearing surface in front of the pillar the other part being provided
with the projecting dovetail a' which fits into the dovetail recess 6 before described.
By this means we obtain an additional bearing surface at the point most required
to resist the greatest strain as will be seen on reference to Figure 1 where the
distance from H¹ to H2 represents the additional bearing surface gained. This
arrangement brings the pillars C sides E and ends F in closer proximity and thus
enables the mesh K forming the bottom or mattress to be brought nearer to the
extreme end of the bedstead as shewn at Figure 3 thus saving any gap between
the mesh and the bedstead.
''
In the case of cots where drop railings require to be fitted the sides E may be
formed with the blocks A as shewn by Figure 3 by which means a recess is formed
at e so as to allow the railing which is indicated by dotted lines M to dropp clear
of the side E.
It will be obvious that the dovetail joint may be varied in shape & may be
reversed the projection a¹ being in such case formed upon the bedstead end B an
and the corresponding recess 6 provided in the corner block A to receive it an i
we may alter the position of the dovetail still further backward or forward if
found desirable.
In cases where mattresses or bottoms are used which require to be tightened we
attach wrought iron ears P to our improved corner block A preferably by being

page_text: cast in the chill. These ears receive the tightening bolts or screws R required for
tightening the mesh of the mattress or bottom the said screw bolts R being thus
placed in the most convenient position for attachment to the mattress and for
adjustment when required.
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
1st. In metallic bedsteads the junction A B formed at the side of the pillar C
for obtaining increased bearing surface at the joint with a reduction of the space
between the angle irons or tubes E and F and the pillar C substantially as herein
set forth and shewn upon the accompanying drawings.
2nd. In metallic bedsteads the combination of the junction A B formed at the
side of the pillar C and the projecting ear P cast in or forming part of the chill A
substantially as and for the purpose herein set forth and shewn.
Dated this 19th day of December 1895.
THOMAS MARK HEWITSON.
GEORGE LANE.
HENRY JOHN LANE.
SAMUEL ILSLEY WHITFIELD.