Improvements relating to the Doffing Apparatus of Carding Engines and other Machines where Doffing Rollers are used.
Year: 1898

page_text: Improvements relating to the Doffing Apparatus of Carding Engines
and other Machines where Doffing Rollers are used.
I, JAMES BARBOUR, of the Firm of Combe Barbour & Combe Limited, of
Falls Foundry, Belfast, Machinist, do hereby declare the nature of this inven-
tion to be as follows::
This improvement consists in the introduction of an elastic connection between
the doffing knife & its actuating bar, by means of which connection an elastic
stopping & starting of the doffing knife is obtained & the doffing motion is goi
by an easier action & with less eccentricity of the actuating eccentric and a
longer stroke of the doffing knife in all cases is obtained than the theoretical
movement communicated to the knife by the multiplication of the levers from
the eccentric.
The elastic connection between the doffing knife & its actuating bar is obtained
by connecting the knife to the actuating bar by springs.
By these means a much higher speed of knife is obtained than has been
possible hitherto consequently the doffer can be driven at a greater speed, thus
obtaining better work & more of it.
With the above mentioned doffing motion I combine an ordinary oil pump
so as to have continuous lubrication of the actuating eccentric & its connections
with the minimum quantity of oil.
Dated this 8th day of October 1898.
Improvements relating to the Doffing Apparatus of Carding Engines
and other Machines where Doffing Rollers are used.
:
I, JAMES BARBOUR, of the Firm of Combe, Barbour & Combe Limited, of
Falls Foundry, Belfast, Ireland, Machinist, do hereby declare the nature of
DQ77

page_text: this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
This invention relates to improvements in the method of and means employed
for actuating the doffing knife or comb of carding engines and other machines
where doffing rollers are employed, the object being to obtain a higher speed
or operative motion of the doffing knife or comb, thus ensuring better results
and more work from the machine combined with which the improvements are
employed.
The invention consists in the introduction of an elastic connection or connec-
tions between the doffing knife or comb and its actuating bar, by means of which
an elastic stopping and starting of the knife or comb is obtained, and the
requisite doffing motion is got by an easier action, and with less eccentricity of
the actuating eccentric, and a longer stroke of the doffing knife is, in all cases,
obtained than the theoretical stroke or movement communicated to the knife by
the multiplication of levers from the eccentric, the elastic connections allowing
the knife or comb a certain amount of "play" at what would be the end of its
stroke if the connections were rigid. The actuating bar or shaft of the doffer
knife or comb being driven at such a high rate of speed it is necessary that its
bearings be continuously lubricated, and this is effected by means of an ordinary
oil pump which thoroughly and efficiently ensures the bearing being lubricated
with the use of a minimum quantity of oil.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the accompanying draw-
ings, in which:
Fig. 1 is a sectional side or end elevation of the improved doffing apparatus
and means for lubricating same.
Fig. 2 is a plan view of Fig. 1.
According to this invention the doffing comb or knife 1 is by one, two, or
more connecting bars 2 connected to its actuating bar 3. Each connecting bar 2
is composed of a series of blades or flat springs laid one on top of another (see
Fig. 2) the whole being passed through or fixed in the actuating bar 3 and
constituting an elastic connection which when the knife 1 is in motion allows
or causes the latter to spring beyond its ordinary length of stroke, or the length
the stroke would be were the connection rigid. One blade or spring may con-
stitute the elastic connection, but in practice I have found that two or more as
described are far more durable.
The requisite doffing motion of the knife 1 is obtained by an easier action
and with less eccentricity of the actuating eccentric 4 which is driven by any
of the well known methods and imparts its motion to the actuating bar 3 by
means of the links or arms 5 and 6.
Combined with the actuating mechanism of the knife is an ordinary oil
pump 7, the threaded piston S of which is rotated by pulley 9 and cord from
any adjacent going part or power, and the fubricant is raised and dropped onto
the bearing continuously whilst the apparatus is in motion. The pump 7 and
mechanism are enclosed in a box or chamber 10 which also serves
as an oil
chamber or tank, and the lubricant and the mechanism are protected from dust.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to he performed, I declare that what
I claim is
(1) The general construction, arrangement, and combination of parts consti-
tuting the improvements in doffing knives and the means for actuating and
lubricating the crank for operating the actuating bar as herein described and
substantially as illustrated by the accompanying drawings.
(2) The general construction, arrangement, and combination of parts consti-
tuting the improvements in doffing knives as herein described and substantially
as illustrated by the annexed drawings.

page_text: (3) A doffing knife fixed to its actuating bar by means of an elastic connection
or connections as and for the purpose herein described and substantially as illus-
trated by the accompanying drawings.
JAMES BARBOUR.
By his Agents,
Brierley & Howard,
Penny Bank Chambers, Halifax.