Improvements in the Method of and Apparatus for Preventing the Unequal Wear of Drawing off Leathers on Combing Machines.
Year: 1887

page_text: Date of Application, 18th Feb., 1887
Complete Left, 17th Nov., 1887
Complete Accepted, 20th Dec., 1887
Improvements in the Method of and Apparatus for Preventing the
Unequal Wear of Drawing off Leathers on Combing Machines.
I, ADOLPHUS WILLIAM Drabble, of 29 Southfield Lane, Horton, Bradford, in the
County of York, Combing Overlooker, do hereby declare the nature of this invention
to be as follows:-
"
This invention relates to certain improvements in apparatus for operating or
traversing" the drawing off leathers on combing machines; and has for its object,
the operation of the leathers in such a manner, that the same are worn more uniformily
than when traversed"
"
as hitherto.
I accomplish my object in the following manner :-I secure below the revolving
circular comb rack common in Noble's combing machines, two or more brackets, and
mount thereon a shaft upon which are secured eccentrics for operating the uprights
and drawing off leather guides; I also secure on the said shaft, a ratchet wheel to
which is attached a cam.
Mounted on the said shaft as fulcrum, is a lever, one arm of which is weighted and
provided with a pawl, and to the other arm I attach a sliding bar, one end of which
rests upon the before named cam; the other extending such a distance from the lever
fulcrum, that it is operated by a bar each revolution of the comb rack, thereby giving
to the ratchet wheel, eccentries, and drawing off leathers an intermediate motion.
When the slivers as they leave the comb circle are in the centre of the drawing off
leathers, the sliding bar is resting on the portion of the cam nearest the centre of the
shaft, the eccentrics at that time being in the position to operate the uprights at their
quickest rate, and as the rachet wheel and eccentrics are operated by the pawl, the
sliding bar rises, so that by the time it is on the full portion of the cam, the eccentrics
by the ordinary way of motion are moving the uprights and leathers at their slowest
rate; but by moving the end of the sliding bar further from the fulcrum as described,
the pick of the lever is increased; therefore the pawi actuates the ratchet wheel and
eccentrics at a proportionately increased speed, thus traversing the drawing off
leathers at about the same rate throughout the entire distance of the traverse.
0.1...מ

page_text: Or in place of the combined ratchet wheel and cam, I can obtain the same motion
by a pair of elliptical wheels, one of which is secured to the before mentioned
eccentric shaft, and the other gearing therewith is mounted on a stud. To the last
mentioned wheel is attached a ratchet wheel, which is operated by a pawl at each
revolution of the revolving circular comb rack, by which an increasing or diminishing
speed is given to the eccentrics, as the uprights and leathers are approaching the end,
or proceeding towards the centre of the traverse.
D
11

page_text: Unequal Wear of Drawing off Leathers on Combing Machines.
I, ADOLPHUS WILLIAM DRABBLE, of 29 Southfield Lane, Horton, Bradford, in the
County of York, Combing Overlooker do hereby declare the nature of this inven-
tion 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 apparatus for operating on what
is known in the trade as "traversing," the drawing off leathers on combing machines ;
and has for its object the operation of the said leathers in such a manner that they
are worn more uniformly than when " traversed" as hitherto and consists in rotating
the shaft upon which the eccentrics are fixed with a differential intermittent motion
by a ratchet wheel secured thereon, and combined with a cam and lever, the cam and
one arm of the lever being so constructed that the ratchet wheel and shaft are moved
for a short distance only at the time the eccentrics are in the position to operate the
ordinary uprights and leather guides at their quickest rate, and to gradually increase
or decrease the speed of the said shaft as the full portion of the eccentrics giving the
slowest motion to the uprights approach or depart from a vertical or direct line with
the said uprights.
In describing my invention more in detail, reference is made to the accompanying
sheet of drawings, in which Fig. 1 represents a diagram plan of a circular combing
machine, and Fig. 2 a cross section shewing the position in which I prefer to fix my
improved apparatus which is more fully illustrated by details Figs. 3, 4, and 5.
secure the brackets A. A. to any convenient portion of the machine, and mount
therein a shaft B, upon which are secured eccentrics C. C. revolving between
projections D, on the ordinary sliding uprights D', to which leather guides of the
usual construction are secured: and to the said shaft, I secure a ratchet wheel E, to
which is fixed a cam F.
Mounted on the shaft B as fulcrum is a lever, one arm of which at G is weighted
and provided with a pawl H, free to work in guide H', the other arm G¹ being
provided with a sliding bar J fitted with a stud K upon which is mounted a small
roller K, resting upon the periphery of cam F, the opposite end of the sliding bar
passing through an opening formed in the lever arm.
The eccentrics C. C. are secured on the shaft with the full portions opposite each
other as shewn by detail Fig. 6, the full portions of the cam F shewn by dotted lines
thereon being in the same direction as those of the eccentrics.
When the roller K¹ is resting on either of the flat portions of the cam at F³, the
slivers leave the comb circle in the centre of the drawing off leathers, the eccentrics
being in the position to operate the uprights at their quickest rate, whilst the sliding
bar Jis in the position for operating the ratchet wheel at its slowest: but as the
wheel is rotated by the pawl H, the cum F, moves the sliding bar J further from the

page_text: centre of the shaft, so that on a tappet secured to the underside of revolving comb
plate M, coming in contact with the said sliding bar J, operates the lever to a greater
extent, thereby causing the pawl H to pick more teeth in the wheel, and therefore
rotate the ratchet wheel E, shaft B, and eccentrics C. C. thereon at a proportionately
increased or decreased rate in accordance with the distance of the roller and sliding
bar from the centre of the shaft, these being the furthest away when the eccentrics
are in the position for giving the least motion to the uprights, and nearest the centre
when the eccentrics are in the position for giving a quick motion to the sliding
uprights D' and drawing off leathers operated therewith.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The shaft B, and eccentrics C. C. combined with a ratchet wheel E, cam F,
lever and sliding bar J all arranged substantially in the manner shewn and for the
purpose described.
2. The combination of the cam F and sliding bar J for the purpose described.
JOHN WAUGH,
Bradford, Yorks,
Agent.