Improvements in and relating to Forks or Guides for the Cone Straps of Roving Frames and the like.
Year: 1895

page_text: Date of Application, 26th Jan.,-1895-Accepted, 2nd Mar., 1895
COMPLETE SPECIFICATION.
Improvements in and relating to Forks or Guides for the Cone
Straps of Roving Frames and the like.
I, SAMUEL JOHNSON of Globe Works, Rochdale in the County of Lancaster
Engineer 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 :-
My invention relates to the forks or guides used to move the cone straps employed
in roving frames along the cone pullies for the purpose of varying the velocity of
the driven cone pulley and its attached parts. It has for its object such an
arrangement of parts as will uniformly maintain throughout the traverse of the
strap the distance from the fork to the point where the strap passes on to the cone
pulley. Hitherto the strap forks have been ordinarily rigidly attached to a
horizontal rack bar and have always moved in planes parallel to that in which the
rack bar moves.
As the surface of each of the cones is correspondingly curved
the forks moving in straight lines are respectively at a greater distance from the
cone when at one end of their traverse than when they are at the other. By my
invention I cause each of the forks in its traverse to follow a curved path
corresponding with the surface of the cones so that the distance from the fork to
the point at which the strap passes on to the cone is uniformly the same.
In order that my said invention shall be more easily understood I have hereunto
annexed a sheet of drawings wherein
Fig. 1 is a side elevation of so much of the mechanism as is necessary to
illustrate my invention and
Fig. 2 is an end view through the line Y Z in Fig. 1.
In carrying my said invention into effect I form on or secure to the upper part
of the radial arms A carrying the lower cone B and above the centre of the
said cone two brackets C C¹. In these brackets I fix an iron rod D which is bent
to correspond with the curvature of the lower cone.
In like manner 1 fix to the
framing of the machine two brackets E E' in which is fastened a second rod F
also bent to correspond with the curvature of the upper cone G and placed below
the centre of the said cone. To the ordinary rack bar H I fasten a double armed
bracket J which is provided with prepared surfaces J J2 on which the ends of the
strap forks K K respectively slide. The forks are kept in contact with the
arms JJ respectively by means of bolts, and slots L L' are formed in K K'
respectively so as to enable them to slide freely. The lower fork K' rests upon the
rod D and its weight keeps it constantly in contact with D. The upper fork K
is formed with an eye M passing over the rod F from which it is suspended.
I may also forin an eye in the lower fork K' so as to pass over the rod D but in most
cases the gravity of the parts is sufficient for the purpose.
When the rack bar H
is at either end of its traverse the forks K K' are at the requisite distance from the
cone and as H makes its longitudinal traverse the forks being carried with it follow
the profiles of the rods D and F respectively and are thus kept at a uniform
distance from the,cones during the entire traverse of H. Although I have only
described my said invention as applied to roving frames it will be understood that
it is equally applicable to other machines in which cone pulleys are employed in a
similar manner.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I. declare that what
I claim is :-
The combination with and application to the cone strap forks of roving frames
of fixed guide rods all arranged and constructed as described and illustrated.
Dated this 26th day of January 1895.
SAML. JOHNSON.