Improvements in Slubbing, Roving, and like Frames.
Year: 1897

page_text: Date of Application, 28th Dec., 1897-Accepted, 19th Feb.,
1898
COMPLETE SPECIFICATION.
Improvements in Slubbing, Roving, and like Frames.
I, JOSEPH FOSSEL, of 152, Congress Street, Boston, in the County of Suffolk,
and State of Massachusetts, United States of America, Mechanic, 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 that portion of a flyer frame by which a variable rotative
motion is given to the bobbins, and a variable traversing motion to the rail upon
which the bobbins are carried. The device embodying my present invention is
designed to take the place of the two conical drums, having a belt connection, which
are now generally employed in flyer frames for the same purpose. In the follow-
ing description of my invention and the manner in which the same is to be
performed reference is made to the figures and reference letters in the accompanying
drawings which represent in detail that portion of a flyer frame embodying my
present invention together with a diagrammatic view of some of the connected
operative parts which illustrate the purpose and character of my invention.
Figure 1 represents in front elevation so much of the operative portion of a flyer
frame as is necessary to illustrate the nature of my invention and in what manner
the same is performed; most of the framework having been omitted from the
drawings in order to disclose more clearly the operative mechanism.
Figure 2 is a top view of the conical driving drum and conical pulley driven
thereby, together with the actuating mechanism by which said conical pulley is
moved with a variable movement longitudinally along the periphery of the conical
driving drum.
Figure 3 represents a pair of conical drums such as are now employed in flyer
frames for the purpose of varying the speed of the bobbin, the periphery of the
driving drum being convex and that of the driven drum concave in the direction
of their lengths in order to produce the requisite variation in the speed of the
bobbins.
Like parts are indicated in the accompanying drawings by like letters of reference.
Referring to the drawings, A denotes portions of the framework of the machine;
B, one of the bobbins; C, the spindle having flyer arms C¹; and D, a portion of
the traversing rail by which the bobbin is raised or lowered in the usual and well-
known manner in machines of this class. The rail D, in practice, extends through-
out the length of the machine and carries a series of bobbins, only one of which is
shown in the drawings.
E denotes the belt pulley by which the machine is driven attached to a shaft E¹
by which rotary motion is communicated to the upper horizontal shaft E2 and from
the shaft E, through an intermediate vertical shaft E³, to the conical drum I
which drives the conical pulley F1 by frictional contact. The conical pulley Fi
has a splined connection with a shaft F journalled in a framework F3 which is
pivoted at one side and conveniently upon a shaft F journalled in brackets F5, F³,
(Fig. 2) which are attached to the fixed framework of the machine. The hub of
the conical pulley F carries a pinion F and is provided with a circumferential

page_text: groove F. The pinion F6 engages a gear wheel F8 having a spline connection
with the shaft F and is provided with a hub having a circumferential groove F.
The frame F3 comprises a bar F10, and, if desired, a sliding weight F" can be
supported upon the bar F10 to aid in holding the conical pulley F¹ in operative
contact with the driving drum F.
The rotary motion of the shaft F4 is communicated through gears F12 to a
shaft G. The bobbin B is driven through the beveled gears H and the spur
gears H¹ from a sleeve H2, which turns loosely upon the shaft E¹.
The sleeve H³
is driven from the shaft G by means of a differential gear H³ and pinion H+
attached to the shaft G. The bobbin B has a rising and falling motion between
the flyer arms C₁, causing the yarn to be traversed or evenly laid upon the barrel
of the bobbin. The rising and falling movement of the bobbin is secured by
mounting it upon a movable rail D to which a rising and falling motion is given
by a rack I and a pinion I¹ on a shaft 12 which is driven through an intermediate
shaft I³ and connected gears from a shaft J, which carries an elongated spur gear J'
and a pair of beveled gears J2 and J³ which are alternately brought into engage-
ment with a beveled pinion J' on the vertical shaft J5 which is driven from the
horizontal shaft G.
The engagement of the gear J2 with the pinion J* moves the traversing rail D
in one direction and the engagement of the gear J³ with the pinion J moves the
rail D in the opposite direction, and the alternate engagement of the gears J2
and J3 with the pinion J is accomplished by sliding the shaft J longitudinally
backwards and forwards in its bearings by means of a sliding bar K carrying a
fork K¹ which engages collars K², K2 attached to the shaft J. The sliding bar K
is automatically moved when the rail D) has reached the limit of its highest or
lowest movement by means of a reversing mechanism represented at K3. Reversing
mechanisms of various kinds are in common use in machines of this class and as
the reversing mechanism forms no part of my present invention I have not deemed
it necessary to illustrate or describe the same in detail.
In the operation of the machine a sliver is delivered by the drawing rolls L
at a uniform speed and the yarn spun therefrom must be wound upon the bobbin
at a uniform speed in order to maintain a uniform tension in the twisted yam
and therefore it is necessary to correspondingly decrease the speed of the bobbin
as its size increases and this is accomplished by moving the conical pulley F¹ from
the larger to the smaller end of the conical drum F. The conical pulley together
with the gears Fe and Fs are moved by means of a bar M provided at one end with
the forks N and N¹ engaging the grooves F7 and F and also having an arm N³
connecting the bar M with the sliding weight F so that the longitudinal move-
ment of the bar M will simultaneously slide the weight F on the bar F10, the
conical pulley F on the shaft F2 and the gear F8 on the shaft Ft.
The bar M is provided with a rack M¹ which engages a spiral gear O carried
upon a vertical shaft O¹ carrying a drum 02 at its upper end upon which is wound
a cord 03 which passes over a pulley 0 and carries a weight 05 which exerts a
constant strain tending to rotate the vertical shaft 01. The vertical shaft O¹ is
connected by beveled gearing, not shown, with a horizontal shaft P having an
escapement wheel P₁ which is alternately engaged by pawls P2 and P3 by which
the escapement wheel P is intermittently released and held so that the vertical
shaft O will be intermittently acted upon by the weight 05 in order to impart a
rotary motion to the spiral gear O and a longitudinal movement to the bar M.
The escapement wheel is intermittently released by the action of the reversing
mechanism so as to allow the weight 05 to move the shaft O' and both the reversing
and escapement mechanisms are in common use and are therefore not described
herein in detail as they form no part of my present invention.
All the operative mechanism between the bobbin B and the splined shaft F
together with the reversing and escapement mechanisms connected therewith are
already in common use and their construction and operation will be thoroughly
understood by all who are conversant with machines of this class.

page_text: The reduction of the speed of the bobbin, as its diameter increases, has heretofore
been accomplished by the employment of two conical drums such as are represented
at Q and R in Fig. 3 connected by a belt S which is moved along the drums with a
uniform movement and it has been found necessary in practice to make one of
the drums slightly concave in the direction of its length and the other drum
correspondingly convex, as represented in Fig. 3, in order to secure the requisite
variation in the speed of the driven drum. In my improved device for varying the
speed of the bobbin I make both the drum F and the pulley F¹ with straight, sides
and I journal the driving drum F so as to bring its upper side parallel with the
shaft on which the conical pulley F slides and I secure the same variation in
the speed of the driven pulley as now secured by the concave and convex conical
drums by making the periphery of the rack actuating gear 0 describe a spiral
with reference to its axis of rotation with a constantly decreasing, radius and I
increase the width of the rack M to correspond with the decrease in the radius of
the gear so that they remain in engagement during the entire longitudinal
movement of the rack.
When conical drums connected by a belt are employed, as shown in Fig. 3 of
the drawings, there is a liability of variation in the tension of the yarn owing to
the slipping of the belt upon the drums due to the slackness of the belt and also
to the unequal speed of those portions of the drums in contact with different
portions of the belt.
By my improvements I am enabled to secure almost an absolute rolling contact
between the periphery of the driving drum and that of the conical pulley as the
ratio between the diameter of the larger end of the pulley and the diameter of the
drum in contact therewith is the same as the ratio between the smaller end of
the conical pulley and the diameter of the drum in contact therewith, whatever the
position of the pulley upon the drum. The weight of the conical pulley may be
sufficient to hold it in contact with the drum and the weight F" omitted.
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:
1. The mechanism for driving the bobbins at a variable speed and comprising a
conical driving drum, a conical pulley in contact therewith, intermediate con-
necting mechanism between said conical pulley and the bobbins, and means for
moving said conical pulley longitudinally on said drum, as and for the purpose
set forth.
2. The combination of a conical driving drum, a conical pulley held in contact
therewith by gravity, means for moving said pulley longitudinally on said drum
and intermediate connecting mechanism between said conical pulley and the
bobbins of the machine, as and for the purpose set. forth.
3. A conical driving drum, a pivoted framework, a shaft journalled in said pivoted
framework, a conical pulley carried by said shaft having a spline connection there-
with and in frictional contact with said drum, a shaft journalled in fixed bearings,
a gear carried on said shaft and having a spline connection therewith, said shaft
being operatively connected with the bobbins of the machine and a pinion attached
to said conical pulley and engaging said gear, and means for simultaneously moving
said gear and said conical pulley lengthwise said conical drum, as and for the
purpose set forth.
4. In a flyer frame the combination with the bobbins of the machine of a driving
mechanism comprising a rotating conical drum, a pulley in frictional contact with
said drum, intermediate connecting mechanism between said pulley and the bobbins
of the machine, and means for imparting a variable traversing movement to said
pulley longitudinally on said drum, as and for the purpose set forth.
5. In a flyer frame the combination with the bobbins of the machine and a
variable driving mechanism, comprising a conical driving drum and conical pulley
held in frictional contact therewith, of an actuating rack by which said pulley

page_text: is moved along said drum, and a spiral gear engaging said rack whereby said pulley
is traversed along said drum with a varying motion, as and for the purpose set
forth.
6. In a flyer frame the combination of a conical driving drum, a swinging frame,
a conical pulley supported by said swinging frame, and in contact with said conical
driving drum, means for moving said conical pulley longitudinally on said drum
and intermediate connecting mechanism, whereby said conical pulley is operatively
connected with the bobbins of the machine, as and for the purpose set forth.
Dated this Twenty-ninth day of September 1897.