Improvements in Apparatus for Actuating Dabbing Brushes for Combing Machines.
Year: 1891

page_text: ate of Application, 24th Dec., 1891-Accepted, 6th Feb., 1892
COMPLETE SPECIFICATION.
Improvements in Apparatus for Actuating Dabbing Brushes for
Combing Machines.
We, JOHN CAMPBELL, of Upper Castle Street, Bradford, in the County of
York, Machine Wool Comber, and ARTHUR JAMES BRAMMA, of Tumbling Hill
Street, Thornton Road, Bradford, aforesaid, 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 :-
This invention relates to certain improvements in Letters Patent, No. 16013
dated 5th December 1884, and has for its object, the construction of the apparatus
in such a manner that, the circumference of the operating eccentric is kept rounder.
than is the case when acting direct upon the sliding plate as hitherto, and by our
improvement to increase the durability of the apparatus and prevent the eccentric
running slack between the projections of the sliding plate.
On working dabbing motions with the eccentric running in direct contact with
the projections of the sliding plate as described in the before named Specification,
the eccentric is worn flat on the circumference at the extreme throw or greatest
distance from the centre of the shaft and at two places, on the circumference a
short distance from each other and nearly opposite to the flat place at the extreme
throw, thus making it impossible for the eccentric to fill, in every position of the
circumference, the space between the projections of the sliding plate and for the
apparatus to run silently.
In describing our invention in detail, reference is made to the accompanying
sheet of drawings, in which
Fig. 1. represents an elevation partly in section of a dabbing apparatus made
according to our invention.
Fig. 2. a detail elevation of the sliding plate.
Fig. 3. a side view of the same.
Fig. 4. a front view of the additional sliding block, and
Fig. 5. an elevation of the shaft and eccentric with the sliding block in section.
Motion is communicated to the apparatus by the pulley A. secured on shaft G.
which is prepared with conical bearings tapering in opposite directions and mounted
in adjustable bushes J. regulated by screws K.
The circumference of the eccentric 1. is conical, and instead of the same fitting
direct between the inclined faced projections M. and M' of sliding plate M² a
sliding block N. is introduced, bored conical to fit the eccentric and taper at the
edges to fit between the inclined surfaces of projections M. and M by which
means, the whole circumference of the eccentric is utilized in operating the sliding
plate M and by the taper edges of the block N. fitting the taper of the
projections M. and M' an increased area of wearing surface is obtained, thereby
preventing holes being worn in the before named projections, and flats on the
eccentric by the latter acting upon a limited bearing surface.
By the regulation of the bushes J. the eccentric L. can be adjusted to work
freely in the block N. and for the latter to fill the space and slide easily between
the projections M. and M' and for the shaft to work in the said bushes, thus by
increasing the wearing surface of the eccentric, and of the projections M. and M
in the manner described, the circumference of the eccentric L. is kept rounder, and
the projections are not worn into holes, thereby preventing the knocking between
eccentric and projections as is the case when constructed in the manner as hitherto ;
thus ensuring silent running and increasing the durability of the apparatus.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In a dabbing apparatus the combination of a block N. having a conical hole
fitting the conical circumference of eccentric L. the edges of block N. being
taper fitting between the projections Mand M' with a shaft G. having conical
bearings, all substantially as shown and described.
Dated this 23rd day of December 1891.
JOHN WAUGH,
Agent.