Improvements in Cylinder Printing Machines.
Year: 1892

page_text: Date of Application, 1st Dec., 1892
Complete Specification Left, 1st Sept., 1893-Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Cylinder Printing Machines.
We, JOHN SAMUEL CUNDALL, ROBERT DINSDALE CUNDALL, and WILLIAM
DENTON CUNDALL, of the Firm of Robert Cundall and Sons, of Shipley, in the
County of York, Machine Makers, do hereby declare the nature of this invention
to be as follows:-.
Our invention has reference to that class of printing machine commonly called
the "Wharfedale cylinder printing machine." In this machine it is necessary to
raise the flyer cylinder into an elevated position in order that the workman may
have free access to the type bed and "forme" and various mechanical appliances
have been used for that purpose. The object of our invention is to arrange and
construct a new form of mechanism which shall be quick in its action and positive
in its movements.
In carrying out our invention the framework carrying the flyer cylinder together
with the flyers is attached to and borne by vertical rods or bars the lower end of
which bars rest upon cam or inclined surfaces so that on the cams being operated
in one direction the vertical bars together with the flyer cylinder and flyer are
raised bodily and remain in that elevated position until the cams or inclined
surfaces are operated in the reverse direction. The cams are operated by a
segment and handle or hand wheel and the flyer cylinder is counterbalanced by a
coiled spring around the operating shaft or the flyer cylinder may be balanced by
a weight or by a pulley and strap kept in a suitable state of tension by spiral or
other form of spring.
Dated this 20th day of Novomlior 1802
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Improvements in Cylinder Printing Machines.
We, JOHN SAMUEL CUNDALL, ROBERT DINSDALE CUNDALL, and WILLIAM
DENTON CUNDALL, of the Firm of Robert Cundall and Sons, of Shipley, in the
County of York, Machine Makers, 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 :-
Our invention has reference to that class of printing machine commonly called
the "Wharfedale cylinder printing machine." In this machine it is necessary to
raise the flyer cylinder into an elevated position in order that the workman may
have free access to the type bed and "forme" and various mechanical appliances
have been used for that purpose. The object of our invention is to arrange and
construct a new form of mechanism for raising the flyer cylinder which shall be
quick in its action and positive in its movements.
In order that our invention may be more clearly understood, reference is made to
the accompanying sheet of drawings illustrative thereof, wherein
Fig. 1. is front elevation of such parts of a "Wharfedale cylinder printing
machine as is necessary to shew the application thereto of our improvements.
"
A represents the stationary framework of the machine, and B is the flyer
cylinder mounted upon the framework C connected to the top of vertical bars or
rods D of which there are two, one at each side of the machine. At the foot of
these vertical rods there are mounted anti-friction bowls E bearing on the surface
Padl

page_text: of cams F secured onto a cross shaft G so that when it is necessary to raise the
flyer cylinder together with the flyers and other parts connected therewith, the
operative springs the hand lever H out of a notch in the segment I and moves
the said hand lever in the direction of the arrow, into a corresponding notch at the
other end of the segment, in doing which the cams F are partially revolved,
thereby raising the vertical rods D together with the flyer cylinder and flyer into
the position shewn in Fig. 2, consequently the operative has free access to the type
bed and forme," and when the necessary things have been attended to, the
handle H is put back into the position shewn in Fig. 1. when the flyer cylinder
and its accompanying framework descend by their own gravity. In order to
counterbalance the weight of the flyer cylinder and its framework, one end of the
coiled spring J is secured to the cross shaft G, the other end of the said coiled
spring being secured to a stud K on the framework. The tension of this coiled
spring will materially assist the operative in raising the flyer cylinder and its
framework so that the act of raising the cylinder requires very little power or
exertion on the part of the workman. In order to give more room to get to the
" forme "
we arrange that the flyer mechanism together with its framework may
revolve or turn upon a stud L¹ secured to a bracket L bolted to the upper end of
the vertical bars or rods D so that said parts can be turned or raised into a vertical
position as shewn in Fig. 3. By mounting the flyer and parts and the framework
carrying same in the manner herein shewn and described together with the method
of raising and lowering the said cylinder every facility is offered for getting to the
type bed whilst the operation of raising and lowering the cylinder is easily performed
and wear and tear of the parts reduced to a minimum.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
Firstly. In a cylinder printing machine the use therein of vertical rods D
carrying the flyer cylinder and having the flyer framework pivotted thereto,
cams F, and hand lever H, in combination with a coiled spring K for raising and
lowering the flyer cylinder, all as herein shewn and described.
Secondly. The combination, with rods D for raising and lowering the flyer
cylinder, of the pivotted frame carrying the "flyer" and parts connected therewith
arranged in the manner and for the purposes substantially as herein shewn and
described.
Dated this 31st day of August 1893.
TASKER & CROSSLEY,
Halifax, Agents.