IMPROVE- MENTS IN THE CONSTRUCTION OF METALLIC BEDSTEADS AND MATTRESS FRAMES to be as follows:
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
WO, GEORGE LAMB SCOTT of Manchester in the County of Lancaster Engineer
and ISAAO CHORLTON of Blackfriars Street Manchester aforesaid Spring Mattress
Manufacturer do hereby declare the nature of the mid Invention for "IMPROVE-
MENTS IN THE CONSTRUCTION OF METALLIC BEDSTEADS AND MATTRESS FRAMES
to be as follows:-
"
Our Invention relates to the iron bedsteads and frames used in conjunction with
spring mattresses and has reference primarily to the angle iron members which are
situated at the top and bottom of such bedsteads and frames and between which the
wire mattress is stretched. Unless the said angle iron members aro made of
inordinate weight they are apt to yield to the tension of the mattress and thus to
become distorted which in addition to the unsightly appearance tends to produce
unequal tension in the mattress. To remedy this defect we employ members
which are composed partly of wrought iron or steel and partly of cast metal.
A convenient method of producing such composite bars is to apply an angle iron
bar of cast metal to the inner side of the wrought iron or steel angle, securing the
two parts together by means of screws, bolts or rivets. We prefer that the upper
side of the wrought iron angle bar should project sufficiently over the cast metal
backing to permit of the said projecting wrought iron part being punched or bored
to receive the hooks or suspenders by which the mattress is secured between the
members. The said cast metal angle iron may be made more rigid by the addition
of small internal strengthening brackets distributed in the manner best calculated
to resist the strain. We do not confine the application of our invention strictly to
angle bars nor to the particular members heroin before referred to as the said
composite bars might be used in other situations in metallic bedsteads and frames
where an unusual strain has to be provided for.

page_text: COMPLETE SPECIFICATION.
We GEORGE LAMB SCOTT of Manchester in the County of Lancaster Engineer
and ISAAC CHORLTON of Blackfriars Street Manchester aforesaid Spring Mattress
Manufacturer do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE, CONSTRUCTION OF METALLIC BEDSTEADS AND MATTRESS FRAMES
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement and accompanying drawings :—
19
Our Invention relates to the iron bedsteads and frames used in conjunction with
spring mattresses and has reference primarily to the angle iron members which are
situated at the top and bottom of such bedsteads and frames and between which
the wire mattress is stretched. Unless the said angle iron members are made of
inordinate weight they are apt to yield to the tension of the mattress and thus to
become distorted which in addition to the unsightly appearance tends to produce
unequal tension in the mattress. To remedy this defect we employ members
which are composed partly of wrought iron or steel and partly of cast metal.
In order that our Invention may be fully understood we will describe the same
with reference to the accompanying sheet of drawings. In the said drawings
Figs. 1, 2 and 2ª represent cross sections of composite bars such as we use for the
purposes of our invention. Fig. 3 represents a side view of a complete bar drawn
to scale Figs. 4 and 5 illustrating modifications of the same. In Fig. 1 the
composite bar is composed of a wrought iron or steel angle bar a and a cast
angle bar b. the two being secured together at intervals throughout their length
by means of bolts as at c. or of rivets as at d. or screws or other suitable fastenings
may be used or the outer bar may be bent pressed or clenched over the edges of
the inner bar throughout its length or at intervals. In the example the upper
member of the bar a. extends beyond the bar b. the projecting portion being
punched or drilled to receive the hooks or attachments e. whereby the chain fabric,
strained wire or material forming the mattress is secured to the frame. The cast
motal bar b. is stiffened by means of gusset ribs f. f. which connect together the
two members of the bar at intervals as seen in Fig. 3. The ends of the cast metal
bar may be formed with boxes or sockets or nut holders as at g. g. or be otherwise
formed to facilitate the attachment together of the members of the frame and the
straining of the mattress. In Fig. 2 a flat bar of wrought iron or of sheet iron or
steel a¹ is used instead of the angle bar a. The two bars a¹ and b. are firmly
secured together as in the other example. Fig. 2 is a section of a composite bar
more particularly intended to secure and retain the ends of a woven wire mattress.
The end of the woven wire fabric h. is held between one face of the angle bar q*
and the strip & rivets or other means of attachment being employed to secure them
together. The angle bar a and strip . with the interposed wire fabric are then
secured by bolts or rivets to the cast angle bar b. Fig. 4 illustrates one of the
variations which may be made in the form of the bars or of the cast metal bar in
order to dispose the metal to the best advantage so as to render the composite bar
more capable of withstanding without distortion the strains to which it will be

page_text: subjected. Other variations may be made in the formation of the bar or bars as
considered to be desirable. In Fig. 5 the wrought iron or steel bar is stiffened by
means of two cast metal bars 6 6¹ each of which extends some distance from the
end of the bar a. The latter form of bar may be used in conjunction with the
section shown at Fig. 2. We do not confine ourselves to the application of our
invention to the end members of a bedstead or frame as composite bars constructed
in the manner described and indicated might be used in other situations in metallic
bedsteads and frames in cases wherein a considerable deflecting strain has to be
sustained by such parts.
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. The composite bars composed and formed substantially as and for the purposes
set forth and indicated hereinbefore and in and by the accompanying drawings.
2. In metallic bedstead or mattress frames the composite bars consisting of
wrought iron or steel bars united together substantially as and for the purpose set
forth and indicated.
.