ESTOPPING THE FEED ROLLERS OF A CARDING ENGINE FROM FEEDING THE COTTON OR FIBROUS MATERIAL TO THE MAIN CARD CYLINDER WHEN THERE MAY BE IN OR ON THE SAID MATERIAL AND BETWEEN SUCH ROLLERS ANY BUNCH OR MATTER LIABLE TO INJURE THE TEETH OF SUCH CYLINDER OR THOSE OF ANY OTHER PART USED IN CONNECTION THEREWITH.
Year: 1877

page_text: LETTERS PATENT. to Charles Henry Chapman, of the State of Massachusetts,
in the United States of America, for the Invention of "ESTOPPING THE FEED
ROLLERS OF A CARDING ENGINE FROM FEEDING THE COTTON OR FIBROUS
MATERIAL TO THE MAIN CARD CYLINDER WHEN THERE MAY BE IN OR ON THE
SAID MATERIAL AND BETWEEN SUCH ROLLERS ANY BUNCH OR MATTER LIABLE
TO INJURE THE TEETH OF SUCH CYLINDER OR THOSE OF ANY OTHER PART USED
IN CONNECTION THEREWITH.'
COMPLETE SPECIFICATION filed by the said Charles Henry Chapman at the
Office of the Commissioners of Patents on the 18th October 1877.
<f
CHARLES HENRY CHAPMAN, of the State of Massachusetts, of the United States
of America. ESTOPPING THE FEED ROLLERS OF A CARDING ENGINE FROM FEEDING
THE COTTON OR FIBROUS MATERIAL TO THE MAIN CARD CYLINDER WHEN THERE
MAY BE IN OR ON THE SAID MATERIAL AND BETWEEN SUCH ROLLERS ANY BUNCH OR
MATTER LIABLE TO INJURE THE TEETH OF SUCH CYLINDER, OR THOSE OF ANY OTHER
PART USED IN CONNECTION THEREWITH.'
"
Figure 1 is a top view; Figure 2, a rear elevation; and Figures 3 and 4, vertical
sections of the feed rollers, and part of the frame of a carding engine with my
Invention in connection therewith.
The remaining Figures 5, 6, 7, and 8 are herein-after referred to and explained.'
My said Invention consists in mechanism substantially as herein-after described
for the purpose aforesaid, and also in the combination of such and the feed rollers
of a carding engine.
In the Drawings A denotes part of the frame of a carding engine; B, the shaft
of the main card cylinder; and C and D the feed rollers, the platform a for receiving
the cotton or fibrous material to be carded being arranged with such rollers in the
ordinary way. There is placed within a bar E, disposed over the feed rollers, and
extending across the frame, as shewn, a set of levers F, F, F, each of which is
pivoted to the bar, and has its upper or longer arm hinged to a horizontal rod G,
provided with a spring H for retracting it. The shorter arms of the levers

page_text: terminate in contact, or very nearly so, with the upper feed roller. The said rod is
pivoted to one arm of a bent lever I, whose other arm has a curved slot b formed in
it, as shown, to receive a clamp screw c screwed into an arm L, which with the
lever I is supported on one fulcrum d, all being arranged as represented. The
adjustable bent lever I combined with the arm L serves as a means of determining
the distance of the lower arms of the levers F from the upper feed roller. Over the
arm L there is an eccentric stop e, which is secured to the bar E by a clamp screw f
This eccentric stop answers as a means of adjusting the arm L with reference to
the annulus U, herein-after described.
Figure 5 is an inner side view of the mechanism applied to the shaft of the lower
feed roller. The first portion of such mechanism is a wheel M, which has in its
periphery a single notch g, see Figure 6, which is an end view, and Figure 7 a top
view of such wheel. A set screw h screwed into the hub of the wheel serves to
fasten the wheel to the shaft i of the said lower feed roller; besides the notched
wheel M, there is placed on the shaft i concentrically a pulley or wheel N, about
which and a driving pulley or wheel O fixed on the shaft B an endless band k is
arranged. The wheel N turns freely on the shaft, and has pivoted to it a lever
pawl P that bears against the periphery of the wheel M, and with another or
auxiliary pawl R is forced against such by a bow spring S, arranged as shown, and
fixed at its middle or crown to a chambered and notched journal T fastened to the
inner side of the wheel N by screws 1, 7. The hub of the wheel M has a flange m
at its inner end. The journal T extends into the space between such flange and the
side of the wheel, and thus serves to keep the wheel in connection with the
wheel N, so that by the clamp screw of the wheel M both of such wheels may be
held in position on the shaft of the lower feed roller.
The journal T, shaped as shown, supports an internally notched ratchet
annulus U, a side view of which is shown in Figure 8. The annulus has teeth
projecting from its outer edge, and notches m in and around its inner periphery as
represented; it turns freely upon the journal T, its object being to force the lever
pawl P out of engagement with the notch of the wheel M. The pawl P and
notched wheel M are to engage the wheel N with the lower feed roller shaft, in
order to cause it to be revolved by such wheel N. It will therefore be evident that
while the pawl is out of engagement with the wheel M, the shaft will not be
revolved by or with the wheel N, which will revolve on and independently of such
shaft, the card cylinders being also in motion, and the feed rollers being stopped at
the same time.
The operation of the machinery may be thus described :--In case of a hard bunch
or improper matter passing into the bite of the feed rollers the upper of them will
be forced upward by it against the small levers F, and will move them, so as to
cause them to move the rod G in a manner to depress the arm L into the space
between two of the teeth of the annulus U. This will arrest the said annulus, or
prevent it from revolving, while the arm may be in engagement with it. The
whee! N continuing to revolve will cause the pawl P to be so acted on by the
annulus as to move the said pawl out of engagement with the notched wheel M,
whereby the lower feed roller will be so disconnected from the wheel N as not to
be revolved with it, thus the feed rollers will stop, or not revolve, while the bunch
or foreign substance may be between them; as soon as it may be removed from
them by an attendant, the upper one will be depressed by its pressure springs w, w,
and the rod G will be retracted by the springs H, whereby the arm L will be raised
out of engagement with the annulus, and the wheel N will be put in engagement
with the feed roller shaft, and will revolve it.
The object of the pawl R is to enable an attendant to reverse the motion of the
feed rollers, in order to allow him to remove the obstruction. This be effects by
turning back the wheel N, whereby the pawl will be carried into the notch of the
wheel M, and by its action against the end of such notch the pawl will cause the
said wheel M and the lower feed roller to be revolved.

page_text: I claim as of my Invention as follows, that is to say :-
I claim the combination of the carding engine feed rollers with mechanism,
substantially as described, or its mechanical equivalent, such mechanism consisting
of one or more levers F, the rod G, spring H, adjustable lever I, arm L, toothed
annulus U, notched wheel M, lever pawl P, wheel N, and notched journal T, all
being arranged and applied essentially as set forth.
I further claim the said mechanism or combination of one or more levers F, the
rod G, spring H, adjustable lever I, arm L, toothed annulus U, notched wheel M,
lever pawl P, wheel N, and notched journal T, all being constructed and arranged,
substantially as set forth.
I further claim the combination of the auxiliary pawl R with the herein last
claimed mechanism, or its mechanical equivalent, or such and the feed rollers of a
carding engine.
I further claim the combination of the adjustable eccentric stop e and its clamp
screw f, or the mechanical equivalent or equivalents therefor, with other mechanism
substantially as described, applied to the feed rollers of a carding engine, and to
operate therewith essentially in manner and for the purpose as set forth.
In witness whereof, I, the said Charles Henry Chapman, have hereunto set
my hand and seal, this Fourteenth day of July, A.D. 1877.