IMPROVEMENTS IN THE MANUFACTURE OF STIRRUPS
Year: 1885

page_text: We SILAS DUFFIELD and JOSEPH HENRY JAMES both of Mommer Lane Willen-
hall in the County of Stafford Stampers do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF STIRRUPS " to be as
follows:-
In the ordinary method of manufacturing stirrups they are made from two pieces
of iron one part consisting of the bottom or tread bar and portions of the sides of
the stirrup and the other part of of the loop and the remaining portions of the sides
of the stirrup. By forging the two parts are bent into the required figure and
joined together at the sides of the stirrup.
In the ordinary manufacture the stirrup has two junctions or welds.
Our invention consists in manufacturing stirrups from one piece of metal by the
process or combination of processes and by the use of the apparatus hereinafter
described whereby the stirrup has a single junction or weld and is consequently
stronger than the ordinary stirrup and the manufacture is simplified and cheapened.
In manufacturing stirrups according to our invention we take a bar of wrought
iron and bend its end into an elliptical form or into the general figure of the
stirrup to be made. We heat this blank to a welding heat and operate upon it by
means of a pair of dies worked in an ordinary stamp or stean hammer one of the
said dies being fixed on the bed of the stamp or hammer and the other die to the
ram or plunger of the stamp or hammer. The interior of the said dies when closed
or brought together has nearly the same figure as the exterior of the stirrup to be
made. That is to say the said dies have a shape proper to fashion the broad tread
part or bar and the sides of the stirrup as well as to form the exterior of the loop
at the top of the stirrup and also to form depressions where the slot of the loop
is to be made. By giving to the heated blank three or more blows with the pair
of dies described the stirrup is fashioned from one piece of iron and with one weld
or junction the weld or junction being situated by preference at the loop end of the
stirrup. The loop part is perforated at the depressions made in it by the dies by
means of piercing or cutting tools and the fins are removed from the stirrup by
clearing tools or otherwise and the stirrup is finished in the ordinary way.
Dated thin thinbranch 100

page_text: We SILAS DUFFIELD and JOSEPH HENRY JAMES both of Mommer Lane, Willen-
hall in the County of Stafford Stampers do hereby declare the nature of our
Invention for "IMPROVEMENTS IN THE MANUFACTURE OF STIRRUPS" and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :—
In the ordinary method of manufacturing stirrups they are made from two pieces
of iron, one part consisting of the bottom or tread bar and portions of the sides of
the stirrup and the other part of the loop and the remaining portions of the sides
of the stirrup. By forging, the two parts are bent into the required figure and
joined together at the sides of the stirrup. In this the ordinary manufacture the
stirrup has two junctions or welds
Our invention consists in manufacturing stirrups from one piece of metal by the
process or combination of processes and by the use of the apparatus hereinafter
described, whereby the stirrup has a single junction or weld and is consequently
stronger than the ordinary stirrup and the manufacture is simplified and cheapened.
In manufacturing stirrups according to our invention we take a bar of wrought
iron and bend its end into an elliptical form or into the general figure of the stirrup
to be made. We heat this blank to a welding heat and operate upon it by means
of a pair of dies worked in an ordinary stamp or steam hammer one of the said dies
being fixed on the bed of the stamp or hammer and the other die to the ram or
plunger of the stamp or hammer. The interior of the said dies, when closed or
brought together, has nearly the same figure as the exterior of the stirrup to be
made. That is to say, the said dies have a shape proper to fashion the broad tread
part or bar and the sides of the stirrup as well as to form the exterior of the loop
at the top of the stirrup and also to form depressions where the slot of the loop is
to be made. By giving to the heated blank three or more blows with the pair of
dies described, the stirrup is fashioned from one piece of iron and with one weld or
junction, the weld or junction being situated either at the loop end of the stirrup
or at the tread part of the stirrup.
The loop part is perforated at the depressions made in it by the dies by means
of piercing or cutting tools and the "fins" are removed from the stirrup by clearing
tools or otherwise and the stirrup is finished in the ordinary way.
We will now describe with reference to the accompanying Drawings the manner
in which our invention is to be performed.
In manufacturing a stirrup in which the weld or junction is situated at the loop
end of the stirrup, we proceed as follows:-
We take a bar of wrought iron (or steel) preferably thicker at the middle than
at the parts on either side the middle portion, and we beud it into an elliptical
figure the ends of the bent bar crossing each other. A blank so formed is repre-
sented in front elevation in Figure 1 and side elevation in Figure 2 of the drawings.
From the broad part a of the blauk the tread bar of the stirrup is made; from the
narrow side parts b, b, the sides of the stirrup are made and from the crossing narrow
parts c, c the loop of the stirrup is made. We do not however limit ourselves to the
use of a bar of different widths at different parts as represented, as a bar of the
same width throughout may be used and the bar instead of being flat may have a
cylindrical figure in cross section. We beat the blank Figures 1 and 2 to a
welding heat and operate upon it by means of a pair of dies the interior of which

page_text: "
"3
when closed or brought together has nearly the same figure as the exterior of the
stirrup to be made. These dies are worked in an ordinary stamp or steam hammer,
one of the dies being fixed on the bed of the stamp or hammer and the other die
to the ram or plunger of the stamp or hammer. By operating upon the heated
blank by means of the pair of dies described the stirrup is fashioned from it and
has the form given to it represented in front elevation in Figure 3 and side
elevation in Figure 4, the weld or junction of the iron or steel being situated at
the loop end of the partly made stirrup. The partly made stirrup Figures 3 and 4
has joined to it at its inner and outer edges, the "fins or superfluous metal d
formed at the junction of the two dies and the side depressions where the slot of
the loop is to be made are unperforated. By means of piercing out tools, the loop
part c is perforated and the "fins" d, d are removed from the edges of the stirrup
by cutting tools of the kind commonly called clearing tools. The stirrup is then
finished in the ordinary way. Figure 5 represents in front elevation and Figure 6
in side elevation, a stirrup after the loop c has been perforated and the edges of
the stirrup stripped or cleared of the "fins or superfluous metal d. d.
In making
stirrup in which the weld or junction is situated at the tread bar
we proceed in the following manner. We take a bar of wrought iron (or steel)
preferably of a cylindrical figure in cross section and bend it into the blank repre-
sented in front elevation in Figure 7 and side elevation in figure 8, that part of
the blank marked e from which the tread bar is to be made having a double
thickness of metal; that is, the nearly joined ends of the bar are situated side by
side. The heated blank Figures 7 and 8 is fashioned in a pair of dies of the kind
herein before described excepting that they have such a shape that the tread bar
of the stirrup is brought into a plane parallel with the sides of the stirrup whereby
a perfect weld or junction of the ends of the blank is obtained at the tread bar.
Figure 9 represents in front elevation and Figure 10 in side elevation, a partly
made stirrup fashioned in the manner described from the heated blank Figures 7
and 8. In the said Figures 9 and 10, the tread bar e is situated parallel to portions
of the sides f, f of the stirrup. After the stirrup has been thus fashioned, the
"fins" d, d are removed and the loop g perforated as before described.
a
Figure 11 represents in front elevation and Figure 12 in side elevation the
partly made stirrup after the "fins" have been removed from it and the loop
perforated. In order to bring the tread bar e into the required position with
respect to the sides of the stirrup, the sides at e², e² are reheated. The tread bar e
and the parts between the said tread bar and the straight sides f, f are then bent
downwards by hand or by the action of a pair of dies so as to bring the side pieces
joining the said tread bar, into the same lines respectively as the sides of the stirrup
and the tread bar at right angles to the said sides as represented in front elevation
in Figure 13 and side elevation in Figure 14. The stirrup is then finished in the
ordinary way.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we declare that what we
claim is
Manufacturing stirrups from a single bar or piece of wrought iron or steel by
the process or combination of processes herein before described and illustrated in
the accompanying Drawings, whereby the stirrups so manufactured have a single
junction or weld and are consequently stronger than stirrups manufactured in the
ordinary way.
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