Invention of AN IMPROVED CONSTRUCTION OF TAKE-OFF ROLLER FOR BRAIDING MACHINES
Year: 1877

page_text: LETTERS PATENT to Luke Turner, of Leicester, in the County of Leicester, for
"
the Invention of AN IMPROVED CONSTRUCTION OF TAKE-OFF ROLLER FOR
BRAIDING MACHINES."
Sealed the 7th May 1878, and dated the 7th November 1877.
PROVISIONAL SPECIFICATION left by the said Luke Turner at the Office
"
of the Commissioners of Patents on the 7th November 1877.
LUKE TURNER, of Leicester, in the County of Leicester.
STRUCTION OF TAKE-OFF ROLLER FOR BRAIDING MACHINES."
AN IMPROVED CON-
The object of this Invention is to increase the efficiency of the take-off rollers:
used in delivering the work as it is formed in braiding machines.
These rollers have hitherto been clothed rollers, that is to say, they were made of
wood covered with emery or an equivalent roughened surface to ensure a good hold
on the braid, or they were made of metal and covered with fustian or india-rubber
cloth. The disadvantages attendant on the use of these rollers was that the wood
warped, and that the covering, of whatever kind, rapidly wore away; thus the
rollers became inefficient, and their diameters, by becoming reduced, caused a change.
in the rate of delivering of the elastic braid.
To remedy these defects, I now propose to make the take-off rollers of metal.
(say, steel) in steps or with varying diameters, to suit the rate of take-off desired;
and instead of clothing this roller with india-rubber, cloth, or an equivalent friction
surface, I roughen the several steps of the roller by applying thereto, while the
roller is receiving rotary motion, a milling tool, which will groove the periphery of
the roller and produce the required roughened surface in the metal itself.
The durability of such a roller will be very great, and the hold which it will
have of the elastic fabric will effectively prevent any slip taking place.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Luke. Turner in the Great Seal Patent Office on the 7th May
1878.
LUKE TURNER, of Leicester; in the County of Leicester.
STRUCTION OF TAKE-OFF ROLLER FOR BRAIDING MACHINES."
"AN IMPROVED CON-
The object of this Invention is to increase the efficiency of the take-off rollers
used in delivering the work as it is formed in braiding machines.
These rollers have hitherto been clothed rollers, that is to say, they were made
of wood covered with emery or an equivalent roughened surface, to ensure a good
hold on the braid, or they were made of metal and covered with fustain or india-
rubber cloth. The disadvantages attendant on the use of these covered rollers was
that, when made of wood, they warped, and that the covering, of whatever kind,
rapidly wore away; thus the rollers became inefficient, and their diameters, by
becoming reduced, caused a change in the rate of delivery of the elastic braid.
To remedy these defects, I now propose to make the take-off roller of metal (say,
steel) in steps or with varying diameters, as heretofore, to suit the various rates of
take-off desired; and instead of clothing this roller with india-rubber cloth, or an
equivalent friction surface, I roughen the metal surface itself, and thereby obtain a
durable friction surface.
In the accompanying Drawing, Fig. 1 shews in side view and Fig. 2 in end view,
the metal take-off roller constituting the subject of this Invention.
The steps of the roller are shewn as prepared with roughening lines which I
produce by means of a milling tool. The steel roller having been turned to shape
or trued up in the lathe, is subjected, while being rotated, to the presure of the
milling tool, which will indent the roller in lines and give each step the requisite
roughened or frictional surface, as indicated in the Drawing.
Another mode of imparting to the metal a frictional or holding surface is to
submit the roller, after it has been trued up in the lathe, to the action of, what is
known as Tilghman's sand blast." By exposing the roller to the action of this
blast for a short period and giving it a slow intermittent axial motion so as to bring
the whole periphery under the action of the blast, a fine grain will be imparted to
the periphery of the roller, suitable for ensuring a firm hold on the goods with
which the roller is to be brought into contact. This mode of roughening the roller
will offer great facilities for renewing the roughness when the same has been worn
off, as the cost of renewal will be very trifling and no preparatory truing up of the
roller will in general be required.
By preparing take-off rollers of steel in the manner above explained, their durability
will be ensured, and the hold which they will have of the elastic fabric will effectually
prevent any slip taking place.
Having now set forth the nature of my Invention of "An Improved Construction
of Take-off Roller for Braiding Machines," and explained the manner of carrying
the same into effect, I wish it to be understood that, under the above in part
recited Letters Patent, I claim, constructing the take-off rollers of braiding machines
of roughened metal in steps or with varying diameters, as and for the purpose above
described.
In witness whereof, I, the said Luke Turner, have hereunto set my hand and
seal, the Fourth day of May, in the year of our Lord One thousand eight
hundred and coronter nicht
LUKE TURNER. (L.S.)