An Improved Construction of Mechanism for Placing Cylindrical Covers onto Inking and Distributing Rollers used in Lithographic and Printing Machinery.
Year: 1893

page_text: Date of Application, 24th Aug., 1893-Accepted, 30th Sept., 1893
COMPLETE SPECIFICATION.
An Improved Construction of Mechanism for Placing Cylindrical
Covers onto Inking and Distributing Rollers used in Lithographic
and Printing Machinery.
1, FRANK HORSELL, Managing Director of the Firm of F. Horsell & Co.
Limited, of 47, Meadow Road, Leeds, in the County of York, Manufacturers of
Printing Inks, Varnishes, etc. 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 the construction and arrangement of apparatus for
forcing cylindrical tubes or covers usually composed of leather or woven fabric onto
rollers used in lithographic and printing machinery, and this I accomplish by the
use of a tubular sleeve, slit up vertically. This slit sleeve or tube is placed within
the tube or cover and onto the roller intended to be covered.
Such being the nature and object of my invention I will proceed to shew how
the same may be put into practical operation, and for that purpose will make
reference to the accompanying sheets of drawings illustrative thereof, wherein
Fig. 1 is a side elevation, and Fig. 2 a front elevation of my improved machine.
A represents a pair of pillars, made secure in the foundation plate B, which
foundation plate B is attached to the floor by bolts C.
The two upright pillars are held rigid by the cross bars or rods D of which there
are two, one at the bottom of the said vertical rods, and oue at the top. These
rods D also serve the purpose of carrying a pair of chain wheels E around which
pass two endless chains F carrying a balance weight G for counterbalancing the
parts and assisting in the return of the chain. Rotary motion is imparted to
the bottom or top pair of chain wheels for the purpose of giving a traversing motion
to the chains, and this rotary motion of the chain wheels is effected by means of a
ratchet wheel and catch on the end of the bottom or top shaft D, the said ratchet
wheel being operated by a lever H as is customary with winding ratches. The
chains carry a pulling down ring I shewn in plan view on an enlarged scale at
Fig. 3, but in this case the pulling down ring I carries little friction bowls a for
the purpose of lessening the friction on the vertical rods as the said chain pulling
down ring I travels up and down.
J represents a sleeve or tube with a vertical slit as shewn at 6 in Fig. 4 and
plan Fig. 5. The bottom of the sleeve or tube J is attached by any suitable means
to a flange J. The sleeve J is placed within the tube or covering and these two
are drawn tightly over the roller K, and on the sleeve being withdrawn the tube is
left upon the said roller.
The modus operandi is as follows:-
A vertical pillar or standard is shewn at L in the top of which is a hole to
receive the shaft or axle of the roller K shewn in position in Figs. 1 and 2.
The sleeve J is first inserted within the tube or cover and the two are passed up
vertically through the pulling down ring I. The bottom of the said sleeve is then
placed over the top end of the roller and the pulling down ring I is drawn down
upon the flange J₁ of the sleeve, after which the ratchet is set in motion so as to
cause the chains to traverse in the direction of the arrows, the effect of which is
to force down the sleeve and with it, the tube or cover until the latter projects
beyond the end of the bottom of roller K. The upper end of the tube or cover is
closed by being first laced so that it cannot be drawn over the upper end of the
roller. The motion of the chain in the direction of the arrow being continued
causes the sleeve to be withdrawn leaving the tube or cover upon the roller, the
internal diameter of the sleeve being large enough to pass over the standard or

page_text: pillar L. The roller with the tube or cover upon it is then removed from the top
of the pillar L and the motion of the chain reversed, thereby raising the pulling
down ring I to any required position for another operation to be performed.
In order to steady the roller whilst the sleeve with the tube or cover upon it is
being drawn over the roller, a steadying ring N is employed and held in position
by a stud c fitting into a recess in the cross bar O. These rings N may be made
of different diameters according to the thickness of roller being covered and the
said rings are interchangeable.
In order to adapt the machine to place tubes or covers upon rollers of varying
lengths the pillar or standard L may have a telescopic tube placed upon it such
as P shewn in Fig. 8, and it may be placed higher up or lower down than the said
pillar and made secure by set screw d, the top of the tube P being provided with
a hole for the reception of the axle of the roller.
When drawing long tubes or covers onto rollers it may be necessary to clamp the
said tube upon the sleeve to prevent the tube from slipping. To do this
place
at the bottom of the tube or cover after it is placed upon the sleeve a clamp M
shewn in elevation Fig. and plan view Fig. 7. The clamp is divided into two
parts but held together by studs e and springs ƒ so as to be adaptable for rollers of
varying diameters.
Instead of operating the chain wheels by a ratchet brace they may be operated
by worm and wheel arrangement as shewn in Figs. 9 and 10 Sheet 2, which will
be understood by anyone versed in mechanics, E being the bottom chain wheel
driven by another wheel and short chain Q caused to be operated by worm and
wheel R and S and lever T.
Although I have described my improved apparatus as occupying a vertical
position, would observe that the apparatus will act and work in a horizontal
position.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. The use and application of a severed sleeve or tube J employed in the
manner and for the purpose substantially as shewn in the drawings and described
herein.
Secondly. The arrangement of compound vertical pillars A endless chains E
carrying a pulling down ring I in combination with sleeve J for placing tubes upon
litho and other printing rollers all as described.
Thirdly. The combination of vertical pillars A endless chains F carrying a
pulling down ring I together with the yielding clamp or ring M for forcing tubes
upon rollers all as described.
Fourthly. The method of imparting motion to the chains by ratchet wheel and
catch as described and shewn in Fig. 1.
Fifthly. The method of imparting motion to the chains by worm and wheel as
shewn in Figs. 9 and 10.
Dated this 23rd day of August 1893.
TASKER & CROSSLEY,
Halifax, Agents.