IMPROVEMENTS IN CARRIAGES USED IN LACE MACHINERY
Year: 1880

page_text: LETTERS PATENT to John Cropper, of the Town and County of the Town of
Nottingham, Machinist, for an Invention of "IMPROVEMENTS IN CARRIAGES
USED IN LACE MACHINERY,"
PROVISIONAL SPECIFICATION left by the said John Cropper at the Office
of the Commissioners of Patents on the 2nd April 1880.
JOHN CROPPER, of the Town and County of the Town of Nottingham, Machinist.
"IMPROVEMENTS IN CARRIAGES USED IN LACE MACHINERY,"
The Invention has for its object improvements in carriages used in lace machinery,
and relates to means whereby I thicken the top of the carriage without either
soldering pieces on or upsetting the edge of the top, or employing tapered rolled
metal for the purpose.
In carrying my Invention into effect I use ordinary flat rolled metal, and form
the carriage in the usual manner, but in order to thicken the top I form a
depression in the metal a short distance from the upper edge of the top, and in a
line parallel or nearly so to such upper edge. By such depression I cause a rise or
projection on the opposite side of the metal, thereby causing an increased thickness
at such part without requiring the employment of any special section of metal or
other expensive process.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Cropper in the Great Seal Patent Office on the 1st October
1880.
JOHN CROPPER, of the Town and County of the Town of Nottingham, Machinist.
"IMPROVEMENTS IN CARRIAGES USED IN LACE MACHINERY."
The Invention has for its object improvements in carriages used in lace machinery,
-and-relates to means whereby I thicken the top of the carriago without either
soldering pieces on or upsetting the edge-of-the-top, or employing tapered rolled
metal for the purpose.
-
--
The object of thickening the top of the carriage is to enable the carriage to hold
the warp threads in a lace machine straight up, and thereby to form a good division
of the warp threads for the points to enter safely.
In carrying my Invention into effect I use ordinary flat rolled metal, and form
the carriage in the usual manner, but in order to thicken the top I form a
depression in the metal a short distance from the upper edge of the top, and in a
line parallel or nearly so with such upper edge. By such depression I cause a rise
or projection on the opposite side of the metal, thereby causing an increased
thickness at such part without requiring the employment of any special section of
-metal-or-other expensive process.
And in order that my said Invention-may-be-more-clearly understood and
rondily ansmind into affect I will wood sided he the accompanying Drawings -
Figure 1 is a face view, and Figure 2 an edge view of one of my improved
carriages, and Figure 3 is a vertical transverse section of the top thereof.
The carriage is in all its parts, excepting the top, made in a similar manner to
those hitherto in use, simple sheet metal of equal thickness throughout being used
in its manufacture.
In order however to thicken the top of the carriage without either soldering
picces on or upsetting the edge of the top, or using tapered rolled metal for the
purpose, I form a depression a in the metal at a short distance from the upper edge
of the top, and in a lino parallel or nearly so with such upper edge. By such
depression I cause a rise or projection on the opposite side of the metal, thereby
causing an increased thickness at such part, the thickness of the head being
practically that of the sheet metal, plus the height of the rise caused by forming
the depression a.
The depression a is formed by the aid of a suitable tool mounted in a fly press;
or other suitablo means may be employed to operate the tool, and if desired the
line of the depression may be more or less curved, and the ends thereof may be
slightly turned downwards.
I in some cases fill the hollow or depression a with solder, thus leaving one side
of the carriage with a flat or unbroken surface.
By these incans I obtain the desired thickness of the top at one operation
without the necessity for any special finishing operation, as the increased thickness
is obtained at once in a perfectly sinooth and finished condition.
I would here remark that although in the Drawings I have represented my
Invention applied to only one form of carriage, it is equally applicable to other
forms of lace machine carriages.
Having thus described the naturo of my said Invention, and the mode in which

page_text: I carry the same into effect, I would have it understood that what I claim is,
thickening the tops of lace machine carriages by forming a recess or depression
therein a short distance from the upper edge thereof, such depression causing a
corresponding rise on the opposite side, substantially as herein shown and
described.
In witness whereof, I, the said John Cropper, have hereunto set my hand
and seal, this Twentieth day of September, in the year of our Lord One
thousand eight hundred and eighty.
JOHN CROPPER. (L.S.)