AN IMPROVED MEANS OR METHOD FOR RAISING AND LOWERING THE TABLE IN LEATHER DRESSING MACHINES
Year: 1884

page_text: COMPLETE SPECIFICATION,
I, SAM HALEY, of the firm of Thomas Haloy and Company, Railway Iron
Works, Brainley, near Leeds, in the County of York, Machine Makers, do hereby
declare the nature of my invention for "AN IMPROVED MEANS OR METHOD
FOR RAISING AND LOWERING THE TABLE IN LEATHER DRESSING MACHINES," "and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
My invention has reference to machines employed in scouring, resetting, stoning,
or otherwise preparing and dressing hides and leather, and my improvements
therein consist in a new means or method of raising and lowering the upper table,
so that the hide thereon can be readily adjusted in its relation to the operating
tools. For the purpose of carrying out my invention I employ certain frainework
for carrying a turntable consisting of a flat circular rail or flange provided with
arms like a wheel, and a central boss on which to rotate, which it is caused to do
at the will of the workman by means of a segment lever, operated by pinion from
a hand wheel. The dressing table rests upon pullies, which are so placed in
relation to the wedges, as that when the circular rail is rotated, the table is raised
and lowered thereby.
Such being the nature and object of my invention, I will now proceed, by the
aid of the accompanying sheet of drawings, to describe the same more fully. Fig. 1
is elevation of my improvements, and Fig. 2. plan view of same. A is an iron frame
supported by the ordinary carriage of the machine, or in any other suitable manner.
The upper surface of this frame carries a turntable consisting of a flat circular rail
or flange B, having radial arms C, and a central boss D to rotate upon, which it is
caused to do by means of the bell-crank lever E, having its fulcrum at F. This
lever is provided at one end with a rack G, whilst its other end is slotted to
receive a pin or stud H fixed to the circular frame B, so that as the rack is moved
either backward or forward by pinion I and hand wheel J, the said circular flange
will be caused to oscillate upon its central boss, for purposes hereinafter explained.
Fixed upon this circular oscillating rail B, but capable of adjustment thereon, are a
number of brackets K, the sides or cheeks of which are inclined or wedge shaped,
and between these cheeks is a bowl or pulley L, one to each inclined bracket, and
upon these pullies the dressing table M rests and rotates. On reference to details
Figs. 3 and 4, it will be observed that the spinḍles of these pullies are provided

page_text: with square collars a, one on each side of the pulley, and that these collars rest
upon the inclined surfaces of the brackets, whilst the end of the said spindles,
which pass beyond the square collars, enter into slots formed, not in the bracket K,
but in a bracket N formed or attached to the iron frame A; it will therefore be
observed that when the circular flange B is oscillated in one direction, that the
wedges will be slided underneath the square collars, causing the pullies to rise, and
thereby lift the table nearer to the operating tools, and that when the circular
flange is oscillated in the opposite direction, that the wedges will be withdrawn
from underneath the square collars, and the table lowered thereby; and this can be
done to the greatest nicety, and with perfect ease by turning the hand wheel J.
It will be seen that the application of my improvements in no way interferes
with the free movement of the table M, as the said table can be turned freely
around upon the pullies L at the will of the workman as usual.
It must be understood that by the use of the square collars a on the spindle of
the pullies, that they are raised perfectly perpendicular, when the inclined brackets
are forced under the said collars, which would not happen if they were round, as
the round collars would rotato when the wedges were sliding under them, and this
would be an objection, as if 'the pullies revolved, the table would also revolve, and
this would alter the position of the hide under the tools, when such might not be
wanted, hence the collars are made square, in order to give a straight lift to the
pullies, and when one side of the square is worn away, it can be turned, and made
equal to new.
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:-
Firstly. The use and employment of the oscillating wedges or brackets K,
operated by turntable in the manner and for the purpose herein set forth and
illustrated in the drawings.
Secondly. The employment of the square collars a for riding upon the inclined
surfaces of the wedges K.