Method of and Means for Doffing Bobbins, Pirns, or Cops from Spinning, Doubling, and Twisting Frames.
Year: 1889

page_text: Date of Application, 22nd July, 1889
Complete Specification Left, 21st Apr., 1890-Accepted, 24th May, 1890
PROVISIONAL SPECIFICATION.
A Method of and Means for Doffing Bobbins, Pirns, or Cops from
Spinning, Doubling, and Twisting Frames.
We, HINDLE RAWCLIFFE, Manager for John Dugdale and Brothers, of Lower
House, Burnley, in the County of Lancaster, and JOHN EASTWOOD, Throstle Over-
looker, of the same place, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to a method of doffing bobbins, pirns or cops from spinning
doubling and twisting frames by means of a mechanical appliance instead of the
ordinary method of doffing by hand as now customary.
In carrying out our invention we employ a light frame which we call the
doffing frame and which carries any suitable number of clips the positions of which
correspond with the positions of the spindles on the spinning or other frame. The
clips are held normally closed by means of a spring or springs and the doffing
frame is provided with handles by means of which all the clips can be opened
simultaneously and then closed on the bobbins, pirns or cops. The front of the
doffing frame is preferably provided with a wire or equivalent which acts as a.
guard to prevent the ends of the yarn from becoming entangled.
We also employ a bent wire or wires in one length or in sections which wire is:
hinged or pivoted to the spinning or other frame and lies normally in front of the
spindles.
When doing this hinged wire is turned back over the spindles and as it passes
down on the other side of the bobbins pirns or cops it carries down with it the yarns
and holds them to prevent breakage while the full bobbins pirns or cops are being
doffed. When the bobbins pirns or cops are ready to be doffed and the frame is
stopped the operative takes the doffing frame and by pressing one or both handles
opens the clips, passes them over a corresponding number of bobbins pirns or cops
and closes them tightly thereon. He then raises the frame so that the clips, grasping
the hobbins pirns or cops, withdraw them from the spindles and then by a slight
movement of the handles the clips are opened and the bobbins pirns or cops are
released and allowed to fall out.
By our invention the operation of doffing is greatly facilitated and expedited and
consequently production is increased. There is also less waste and no appreciable
side strain upon the spindles.
Dated this 20th day of July 1889
H. B. BARLOW,
Agent for Applicants.
COMPLETE SPECIFICATION.
A Method of and Means for Doffing Bobbins, Pirns, or Cops from
Spinning, Doubling, and Twisting Frames.
We, HINDLE RAWCLIFFE, Manager for John Dugdale and Brothers, of Lower
House, Burnley, in the County of Lancaster, and JOHN EASTWOOD, Throstle Over-
looker, of the same place, do hereby declare the naturo of this said invention and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
Our invention relates to a method of doffing bobbins pirns or cops from spinning
doubling and twisting frames by means of a mechanical appliance instead of the
ordinary method of doffing by hand as now-customary.
In carrying out our invention we employ a light frame which we call the doffing

page_text: frame and which carries any suitable number of clips the positions of which correspond
with the positions of the spindles on the spinning or other frame. The clips are held
normally closed by means of a spring or springs and the doffing frame is provided
with handles by means of which all the clips can be opened simultaneously and then
closed on the bobbins pirns or cops. The front of the doffing frame is preferably
provided with a wire or equivalent which acts as a guard to prevent the ends of yarn
from becoming entangled.
We also employ a bent wire or wires in one length or in sections which wire is
hinged or pivoted to the spinning or other frame and lies normally in front of the
spindles.
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying three Sheets of Drawings reference being
had to the figures and letters marked thereon.
Figure 1 is a plan of a doffing apparatus made according to our invention the clips
being shown closed.
Figure 2 is a similar view but showing the clips open.
Figure 3 is a plan of an alternative arrangement of our doffing apparatus.
Figure 4 is a front elevation of part of the spindle rail of a spinning or similar
frame illustrating the application of our arrangement of hinged wire for trapping the
yarns during doffing.
Figures 5 and 6 are transverse vertical sections of Figure 4 respectively showing
the hinged wire at front and back of the spindles.
Referring first to Figs. 1 and 2, a and b designate two plates or bars of metal or
other suitable material upon the bar a are secured the series of fixed jaws c and to
both bars a and b are pivoted the other series of movable jaws d of the clips which
are, in this case, kept normally closed by means of the spiral spring e, one end of
which is connected to the extended end of one of the fixed jaws e and the other end to
the extended end of one of the movable jaws d.
The fixed jaw e at one end and the movable jaw d at the other end are also
prolonged to form a pair of handles ff by means of which the clips can be
opened, as shown in Fig. 2, placed over the bobbins pirns or cops and then closed
assisted by the spring e so as to enable the said bobbins pirns or cops to be simul-
taneously doffed.
The rod or wire g which is fixed on the doffing frame in front of the clips prevents
the yarns from becoming entangled with the jaws c and d.
In the alternative form of doffing fame illustrated by Fig. 3 the only difference is
that the springe is arranged to hold the clips normally open as shown instead of
closed as in the preceding arrangement.
In the Drawings we have shown the doffing frames made with seven clips each
that being a convenient number; but it is obvious that any other suitable nuinber of
clips may be employed.
Figures 4, 5 and 6 illustrate the arrangement of hinged wire which is supported
by arms in brackets i secured on the ring rail j. We prefer to make each wire h of
a length corresponding to that of the doffing frame. That is to say if the doffing
frame is made with seven clips then each wire his long enough to serve for seven
spindles A.
The wire normally lies in front of the spindles as shown in Figs. 4 and 5 ;
when doffing this hinged wire is turned back over the spindles & and as it passes
down on the other side of the bobbins pirns or cops it carries down with it the yarns
and holds them to prevent breakage while the full bobbins pirns or cops are being
doffed. When the hobbins pirns or cops are ready to be doffed and the frame is
stopped the operative takes the doffing frame and by pressing one or both handles
opens the clips, passes them over a corresponding number of bobbins pirns or cops
and closes them tightly thereon. He then raises the frame so that the clips, grasping
the bobbins pirns or cops, withdraw them from the spindles k and then by a slight
movement of the handles the clips are opened and the bobbins pirns or cops are
released and allowed to fall out.

page_text: By our invention the operation of doffing is greatly facilitated and expedited
and consequently production is increased. There is also less waste and no appreciable
side strain upon the spindles.
The arrangement of hinged wire can be advantageously employed when doffing
by hand as well as with our doffing frame as described.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1 The construction use and application of a doffing frame having a series of clips
capable of being simultaneously opened by means of a handle or handles and then
closed upon a corresponding number of bobbins pirns or cops for the purpose of
doffing the latter simultaneously substantially as herein set forth.
2. The arrangement use and application of the hinged wire or its equivalent for
trapping the yarns whilst doffing bobbins pirns or cops substantially as herein set
forth.
Dated this 18th day of April 1890.
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicants.