Improvements.in End Bar Sleys used in Lace Machines.
Year: 1893

page_text: Date of Application, 8th Nov., 1893
Complete Specification Left, 2nd Aug., 1894-Accepted, 22nd Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements.in End Bar Sleys used in Lace Machines.
We, JOHN JARDINE, of Raleigh Street, Lace Machine Builder and HARRY
LAMBERT of 65 Raleigh Street, Mechanic, both in the Town and. County of the
Town of Nottingham do hereby declare the. nature of this invention to be as
follows:-
Our invention has for its object improvements in sleys used in twist or warp lace
machines for supporting and guiding the steel bars.
End bar sleys as hitherto constructed have all been straight, that is to say, the
side of the sley which is placed next to the machine end is parallel with that side of
the sley away from the machine end.
End bar sleys are used to guide the steel bars as they come from the jacquard
into the well (the space between the comb bars) of the machine and from the well
to the bar springs.
The width of the sleys is limited by the width of the well. For instance sleys
for 160 top bars would be made 2 inches or less in width. Thus the steel bars
which, where they leave the jacquard, occupy a width of about 4 feet must be
brought into a width of 2 inches or less before they are guided into the well or
space between the comb bars.
This object has hitherto been attained in one of 2 ways:-Either by putting
2 bars in each division made by the combs, fixed in the sleys for dividing the bars,
or by making the combs so fine that the necessary number can be got into the
limited space and allow a separate division for each bar.
The custom of putting 2 bars into one division causes friction as the bars rub
against each other when moved in opposite directions by the jacquard.
The use of very fine (thin) combs, to allow a separate division for each bar
causes, on account of their weakness, a wedging action to be set up by the fan of the
bars. This wedging action is very detrimental as by it the outer bars are so
fastened, in the combs of the sley, that very strong springs are required to move
the bars up to their stops. The use of strong springs pulls the bars out or
lengthens them-destroying their correspondence with the grooves or gaits in the
comb bars-thus rendering the machine incapable of making good lace.
The effect of this wedging has had to be modified, where a great number of bars
have been required, by fitting an intermediate bar sley between the machine and
the jacquard and so taking part of the strain from the end bar sley, which is
attached to the machine end. Although the locking of the bars is in a great
measure prevented by this device friction is increased & stronger bar springs are
required than would be necessary were the steel bars perfectly free to move; one
bar in each division of the end bar sley.
Now, according to our invention, we accomplish this desirable result by making
the end bar sleys V shaped instead of straight thus obtaining about double the
space for each comb, of the bar sley, and consequently being able to make the
division about twice the strength without increasing the space occupied by the steel
bars as they are guided into the well of the machine.
Our invention enables us, even in the finest of gauges working the greatest
number of bars, to move each bar with a comparatively light or weak spring and,
notwithstanding the fanning out of the bars by the jacquard, no intermediate sley

page_text: is required and it is never necessary to place two bars into one division of the end
bar sley.
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JOHN JARDINE.
HARRY LAMBERT.
Improvements in End Bar Sleys used in Lace Machines.
We, JOHN JARDINE, of Raleigh Street, Lace Machine Builder and HARRY
LAMBERT of 65 Raleigh Street, Mechanic, both in the Town and County of the
Town of Nottingham 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 :—
Our invention has for its object improvements in sleys used in twist or warp lace
machines for supporting and guiding the steel bars.
End bar sleys as hitherto constructed have all been straight, that is to say, the
side of the sley which is placed next to the machine end is parallel with that side of
the sley away from the machine end.
End bar sleys are used to guide the steel bars as they come from the jacquard
into the well (the space between the comb bars) of the machine and from the well
to the bar springs.
For instance sleys
Thus the steel bars
The width of the sleys is limited by the width of the well.
for 160 top bars would be made 2 inches or less in width.
which, where they leave the jacquard, occupy a width of about 4 feet must be
brought into a width of 2 inches or less before they are guided into the well or
space between the comb bars.
This object has hitherto been attained in one of 2 ways:-Either by putting
2 bars in each division made by the combs fixed in the sleys for dividing the bars.
Or by making the combs so fine that the necessary number can be got into the
limited space and allow a separate division for each bar.
The custom of putting 2 bars in one division causes friction as the bars rub
against each other when moved in opposite directions.
The use of very fine (thin) combs, to allow a separate division for each bar
causes, on account of their weakness, a wedging action to be set up by the fan of
the bars. This wedging action is very detrimental as by it the outer bars are so
fastened in the combs of the sley that very strong springs are required to move the
bars up to their stops. The use of strong springs pulls the bars out or lengthens
them destroying their correspondence with the grooves or gaits in the comb
bars thus rendering the machine incapable of making good lace.
The effect of this wedging has had to be modified, where a great number of bars
have been required, by fitting an intermediate bar sley between the machine and
the jacquard and so taking part of the strain from the end bar sley, which is
attached to the machine end. Although the locking of the bars is in a great
measure prevented by this device friction is increased and stronger bar springs are
required than would be necessary were the steel bars perfectly free to move one bar
in each division of the end bar sley.
Now, according to our invention, we accomplish this desirable result by making
the end bar sleys V shaped instead of straight thus obtaining about double the
space for each comb, of the bar sley, and consequently being able to make the
division about twice the strength without increasing the space occupied by the steel
bars as they are guided into the well of the machine.
Our invention enables us, even in the finest of gauges working the greatest
number of bars, to move each bar with a comparatively light or weak spring and
notwithstanding the fanning out of the bars by the jacquard no intermediate sley

page_text: is required and it is never necessary to place two bars into one division of the end.
bar sley.
In order that the said invention may be more clearly understood and more
readily carried into effect we will proceed, aided by the accompanying drawings
more fully to describe the same.
Figure 1 is a plan and Figure 2 is a sectional elevation of an end bar sley con-
structed according to our invention. Although we prefer to make the sley
V shaped, as shown on plan, we may make it semi circular or bowed.
Figure 3 shows two views of the combs used to form the divisions for the bars.
Figure 4 is a plan showing the fan of the bars A A A as they come from the
jacquard L to the sley which is attached to the machine end H.
Figure 5 is an elevation and Figure 6 is a plan showing the end bar sley screwed
on to adjustable brackets J and K by means of screws QQ.
Figure 7 shows front and side view of end bar sley as usually constructed.
In the various figures like parts are indicated by similar letters of reference.
It should be understood that we show only the 2 outside and the centre steel
bars A A A in order not to complicate the drawing. When at work there would
be one steel bar to each division in the sley.
B. shows a hard wood (or other suitable material) cap fastened down to the sley
by the thumb screws C C and the cross piece D. This cap forms a bearing for
the steel bars to work against, as the warp threads tend to lift them; it also forms
a cover protecting the bars from the oil that might fall upon them, from the
machine, and clog them.
The combs have a piece E, slightly deeper than the thickness of a steel bar, cut
out of one side in the usual manner. They are made wedge shape so that when
joined together in the sley they fan out to receive the steel bars as they come from
the jacquard, or the spring frame which is attached to the opposite end of the
machine to the jacquard. The top part of the comb U is made slightly thinner
than the bottom part V so that by removing the cap B any steel bar can be lifted
out of the sley.
M is a piece of hard wood (or other suitable material) forming a bearing for the
bottom of the steel bars.
N is a metal block made by being cast in a mould together with combs E. The
lower part of the combs is surrounded by the metal N and thus held in the proper
position to form the divisions of the bar sley. Should it be necessary on account
of wear or accident at any time to replace any of the combs the lead N can be
run down, new combs put in and the lead recast.
F is the division at the jacquard from which the steel bars move in towards the
end bar sley. G G are the usual stays or fasteners from the jacquard to the
machine.
K is a bracket to which the end bar sley is attached. This bracket is attached
to another bracket by screws R R which pass through slots, the object of which is
to permit the sley to be adjusted sideways, that is, more to the front or to the
back of the machine.
J is a bracket attached to the machine end by screws S S which pass through
slots the object of which is to enable the end bar sley to be adjusted vertically.
Having now particularly described and ascertained the nature of our said inven"
tion and in what manner the same is to be performed we declare that what we
claim is :-
The employment in twist and warp lace machines of V or bow shaped end bar
sleys substantially as herein shown and described and for the purpose stated.
Dated this First day of August 1894
JOHN JARDINE.
HARRY LAMBERT.