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overrun of yarn on the beam when full yardage has been


registered. This device acts only when the yardage has


been attained for which the clock was set. It does not


interfere with the starting of the Warper from stops due to


broken yarn.


The fluted cylinder may be had on any of our Warpers


that measure from the cylinder. The Rhoades- Saulnier


device is a regular feature of all our new Warpers.


Both are manufactured under patents issued to us a


few years ago. Both have been in use long enough for


actual mill tests under all necessary conditions. This mill


experience proves that they reduce the Slasher waste to


the minimum.


REDUCING DEPTH OF THE WARPER


One of the important features of the improved modern


Warper introduced by us many years ago was the eccentric


cylinder drive, which allowed the beam to set farther into


the machine. This made it possible to use larger beams,


and by reducing the depth of the machine, facilitated the


work of the warper- tender in tying in broken ends.


Further reduction in the depth of the machine came


with our design of a Warper to measure yarn from the


cylinder, which allowed us to eliminate the space taken up


by the measuring roll.


These changes lightened the labors of the operator and


increased the product of the machine.


ADVANTAGES OF CYLINDER MEASUREMENT


In spite of these benefits, the design and introduction


of cylinder measurement was not primarily to reduce the


depth of the Warper, but to prevent waste in slashing.


To do this it is essential that Warper registering devices


shall measure accurately and stop the machine when warp


yarn of a predetermined length has been wound upon the


Warper beam.


Registering devices were originally operated from a


small measuring roll over which the warp threads ran.


A measuring roll must be light to work properly. It


is only nine inches in circumference.


In some Warpers these measuring rolls are made of


tin. If undersized, the desired circumference is secured


by a coat of paint.


Our measuring rolls are made of brass. Besides


making every effort to have them come to measure, we


require a careful inspection before shipment, rejecting all


rolls that do not scale to size- that is, within the allowed


limits of a few thousandths of an inch.


Nevertheless inaccuracies occur; and more come with


continued use of the roll.


Any inaccuracy in the original measuring roll or that


has come to it during use is bound to appear in the final


measurement every nine inches- one revolution of the roll.


The cylinder, when used for measuring, is turned to


size. Such variations as occur are very small. They


appear in the final measurement only every 40" or so,


according to the circumference of the cylinder.


With the measuring roll there is an inevitable slip in


starting and stopping because the yarn cannot be drawn


over the roll tight enough to prevent this.


With cylinder measurement it was thought that the


weight of the beam would prevent this slipping incident to


starting and stopping. While we used the smooth cylinder


the gain in this particular was not material.


The final step that eliminated practically all slip was


the cylinder with fluted surface.


FLUTED CYLINDER A POSITIVE DRIVE


Cotton manufacturers generally know the accuracy of


the fluted roll in other processes.


As applied to our Warper, the mass of yarn on- the


beam, being relatively yielding under the weight of the


beam and its load, sinks into the longitudinal grooves on


the cylinder, producing in effect a positive drive between


the cylinder and the warp beam. This practically positive

Cotton Chats 1923, No. 242, Page 2-3