Improvements in the Guide Bars and Brackets used in Machines for Making Lace Ourtains.
Year: 1891

page_text: Date of Application, 28th Oct., 1891
Complete Specification Left, 25th July, 1892-Accepted, 3rd Sept, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Guide Bars and Brackets used in Machines for
Making Lace Ourtains.
I, JOHN JARDINE Machinist Raleigh Street Nottingham do hereby declare the
nature of this invention to be as follows:-
The object of my invention is to remove the difficulty caused by the rapid wear
of the slots in the guide bars and also that of the pins which pass through the
brackets by which the guide bars are retained in place so long as the pins and the
slots fit each other, but as heretofore made, the pins are quickly reduced and the slots
enlarged so that the guide bars become loose and rise, come into contact with the
jacks, make inferior work and lessen the production of the machine.
My invention enables me to make the wearing parts of the guide bar,—that is the
slot of hardened steel instead of soft iron, and it also provides for the renewal of
these parts as often as may be necessary.
I accomplish this desired result as regards the guide bar in the following manner.
That part of the guide bar in which the slot is made, I make a separate piece of
steel in which is punched the required slot which for ordinary purposes is about one
inch long and one eighth of an inch wide.
After the slot is made the piece of steel is hardened and tempered.
The guide bar itself is punched in the places where the slots are required with
the same punch and bed as used for pressing out the pieces of steel in which the
slots are made, and in consequence the pieces of steel fit exactly the holes in the
guide bar.
A little solder may be run through the joint or they may be fastened by knocking
down the edge of the guide bar over the steel pieces.
It is evident that these pieces of hardened steel may be kept in stock and the
guide bar slots renewed with very little trouble as often as may be required.
As regards the improvement in the brackets carrying the guide bars-
Instead of the round pin as heretofore used, screwed into the bracket, I make a
slot through the bracket of about one eighth of an inch by three eighths of an inch
through which is passed a piece of hardened steel so that the guide bar with its now
hardened steel slot works or rides on a hardened steel surface of three eighths of an
inch by one eighth of an inch-instead as heretofore a round pin with only a point
for a bearing and wearing surface.
I make the brackets with a projection immediately above the slot through which
a small hole is made corresponding with a similar hole made in the piece of steel.
A pin is passed through these holes and in this way the piece of steel is kept
securely in place and yet can be easily withdrawn, and greased, being so accessible
and handy that the whole set can be taken out, greased and replaced in a few
minutes.
The facility for greasing the steel bearings is a great advantage over the method
heretofore employed to oil the round pin by pouring oil from the top between the
guide bars and the brackets, which oil is worked up by the threads and discolours
the lace.
So that by means of my invention I remove all the difficulties continually com
plained of in the working of the guide bars in machines making lace curtains.
1
1001

page_text: COMPLETE SPECIFICATION.
Improvements in the Guide Bars and Brackets used in Machines for
Making Lace Curtains.
I, JOHN JARDINE, of Raleigh Street, Nottingham, Machinist, 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 :-
The object of my invention is to remove the difficulty caused by the rapid wear
of the slots in the guide bars and also that of the pins which pass through the
brackets by which the guide bars are retained in place so long as the pins and the
slots fit each other but, as heretofore made, the pins are quickly reduced and the slots
enlarged so that the guide bars become loose and rise, come into contact with the
jacks, make inferior work and lessen the production of the machine. My invention
enables me to make the wearing parts of the guide bar, that is the slot, of hardened
steel instead of soft iron, and it also provides for the renewal of these parts as often
as may be necessary. I accomplish the desired result as regards the guide bar in
the following manner :-That part of the guide bar in which the slot is made, I
make a separate piece of steel in which is punched the required slot which for
ordinary purposes is about one inch long and one eighth of an inch wide.
After the slot is made the piece of steel is hardened and tempered.
The guide bar itself is punched in the places where the slots are required with the
same punch and bed as used for pressing out the pieces of steel in which the slots
are made, and in consequence the pieces of steel fit exactly the holes in the
guide bar.
A little solder may be run through the joint or they may be fastened by knocking
down the edge of the guide bar over the steel pieces.
It is evident that these pieces of hardened steel may be kept in stock and the
guide bar slots renewed with very little trouble as often as may be required.
As regards the improvement in the brackets carrying the guide bars.
Instead of the round pin as heretofore used, screwed into the bracket, I make a
slot through the bracket of about one eighth of an inch by three eighths of an inch
through which is passed a piece of hardened steel so that the guide bar with its now
hardened steel slot works or rides on a hardened piece of steel having a surface of
say three eighths of an inch by one eighth of an inch instead of as heretofore, only
a round pin one eighth of an inch diameter.
I make the bracket with a projection immediately above the slot through which
a small hole is made, corresponding with a similar hole made in the piece of steel.
A pin is passed through these holes and in this way the piece of steel is kept
securely in place and yet can be easily withdrawn and greased, being so accessible
and handy that the whole set can be taken out greased and replaced in a few
minutes.
The facility of greasing the steel bearings is a great advantage over the method
heretofore usually employed to oil the round pin by pouring oil from the top between
the guide bars and brackets, which oil is worked up by the threads and discolours
the lace.
So that by means of my invention I remove all the difficulties continually com-
plained of in the working of the guide bars in machines making lace curtains.
DESCRIPTIONS OF THE DRAWINGS.
Fig. 1. is a front view of my improved guide bar bracket.
Fig. 2. is a side view of same as it would be made to hold 3 guide bars.
Fig. 3. shows two views of the hardened steel pin upon which the guide bars work

page_text: Fig. 5. is a front view of my improved guide bar bracket in position.
A. is the hardened steel piece let into the guide bar. B. is a guide bar into which
guides F. are soldered in the usual manner. C. is a trick bar as usually made.
D. is the hardened steel pin shown in Fig. 3. E. is the taper peg shown in Fig. 4.
Having now particularly described the nature of my said invention and in what
manner the same is to be performed I declare that what I claim is
1°. The hardened steel piece A., that is let into the guide bar, substantially as
herein shown and described and for the purpose stated.
2°. The improved construction of guide bar bracket Figs. 1 & 2. and pin D.
substantially as herein shown and described and for the purpose stated.
Dated this Twenty-third day of July 1892.
JOHN JARDINE.