IMPROVED DEVICE FOR OPERATING THE DOFFER COMBS OF CARDING MACHINES
Year: 1884

page_text: I JAMES BARKER of Philadelphia in the State of Pennsylvania, one of the
United States of America, Manufacturer of Carding Machinery, do hereby declare
the nature of the said invention for an "IMPROVED DEVICE FOR OPERATING THE
DOFFER COMBS OF CARDING MACHINES," and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement; and accompanying drawings.
My invention relates to the apparatus used to impart rapid vibrating movement
to the doffing combs of carding engines and the principal objects of my invention
are to obtain thorough lubrication and readiness of adjustment of the parts to
compensate for wear.
The invention is fully illustrated in the accompanying drawings, wherein Fig. 1,
is a plan view of comb operating mechanism constructed in accordance with my
invention, the upper half of the enclosing box or casing being removed; Fig. 2, is
a transverse section on the line 1-2; Fig. 3 is a longitudinal section on the line
3-4; and Fig. 4, a longitudinal section on the line 5-6, all in Fig. 1.
In Figs. 1, 2, and 4 A, A, represent the upper and lower halves of a box or
casing having bearings for the two shafts B and D, separately represented in
perspective by Figs. 5. and 6, the shaft B having a rotating movement, and the shaft
Da vibrating movement derived from the shaft B through the medium of
mechanism forming the subject of my invention.
The shaft B is provided with a pulley whereby the shaft may receive motion
from a suitably situated driving shaft, and the said shaft B has a crank 6 and a
conical collar d. The shaft D, projects beyond the casing at one end, and this
projecting end of the shaft has a disc e, to which the doffer comb of the carding
machine may be secured or connected in any suitable manner. On the shaft D is
formed a forked arm F, and the two limbs of the fork are prepared to receive a
sliding block f, which is formed in two parts and is bored to fit the crank pin b.
The surfaces which are prepared to slide upon the limbs of the said fork are
tapered in a direction the reverse of the taper of the conical collar d as clearly
shewn in Fig. 2 and the inner surfaces of the said limbs are beveled for the
reception of the said tapered block so that the wear of both the box f and the
collar d is compensated for by one adjustment of the shaft D in an endwise
direction. This adjustment of the shaft D is effected by means of a set-screw Ɑ
.

page_text: which is fitted in a tapped hole in the casing A, A', and bears against the end of
the said shaft D, as shown in Fig. 1. The crank b, and the forked arm F, are
contained within a chamber H, in the casing A, A', and a supply of oil is deposited
in the said chamber for the lubrication of the various parts of the apparatus, this
oil being agitated by the vibrating arm and rotating crank, and by the counter
weight g on the crank shaft, the oil thus finding its way to the bearings of both
shafts, B and D, and serving to keep the same constantly and thoroughly lubricated.
Any oil which may find its way through the bearings or through the joint between
the two halves of the casing is caught in a groove h, and returns to the chamber H,
through passages i In order to lubricate the bearing between the adjusting
screw G, and the end of the shaft D, radial notches m are formed in the end of the
said shaft, as shewn in Figs. 1 and 5.
Owing to these provisions for thorough lubrication, and to the simple. means
employed for compensation for wear and for keeping the bearings suitably tight
the apparatus can be run at a very high rate of speed without noise or jar, and the
parts can be adjusted readily and without the exercise of any special skill.
A portion of the thread of the screw G is cut away in order to provide a bearing
for a pinching screw n which prevents any movement of the screw G after it has
been properly adjusted.
By providing the shaft B with a single cone d, and taking up wear by the
adjustment of the shaft D, I dispense with the stuffing boxes usually employed in
devices of the class to which my invention relates; and by dividing the casing or
box horizontally through the shaft bearings, I am enabled to use a forked arm cast
on the shaft D, or formed in one piece therewith, instead of a separate arm secured
to the said shaft by means of a set-screw.
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.) In apparatus for operating the doffing comb of a carding engine the
employment of a crank-shaft formed with a conical collar and carrying a tapered
bearing block fitted to slide in a fork on the comb actuating shaft the said fork
being tapered or beveled to suit the said block and the inclination of the tapered
surfaces being reversed with relation to the said conical collar substantially as and
for the purpose set forth and indicated.
(2.) The combination of the cranked shaft B, the shaft D having a forked arm
F, and the adjusting screw G bearing against the end of the shaft D, substantially
as and for the purpose set forth and indicated.
(3.) The combination of the casing A, A', having a chamber H, with the shaft
D, and its forked arm F, and the shaft B, with its crank and counterweight g, as
set forth and indicated.
(4.) The combination of the casing A, A', parted horizontally through the shaft
bearings, with the shafts B and D, the latter having the forked arm F, cast
therewith or formed in one piece therewith.