Improvements in Apparatus for Feeding Sheets of Paper to Printing, Ruling, and like Machines.
Year: 1893

page_text: Date of Application, 14th July, 1893
Complete Specification Left, 16th Apr., 1894-Accepted, 19th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Feeding Sheets of Paper to Printing,
Ruling, and like Machines.
I GEORGE DUNCAN, of Clarendon Road, Egremont, in the County of Chester,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to provide apparatus capable of feeding sheets from a pile singly
and with certainty to printing, ruling, and like machines.
Apparatus under my invention consists, (a) of an adhesive roller or its equivalent,
to which rising and falling motion is imparted; (b) of a damping roller, pad, or
like device for imparting moisture to the adhesive roller or its equivalent; (c) of
grippers to take the lifted sheet from the adhesive roller and deposit it on a table
or carrier; and (d), of pushers and stops for regulating the position of the sheet
on the carrier.
It is essential in order to ensure correct action, that the adhesive roller should
be free to descend and rest on the sheets of paper as the pile diminishes, that the
damper should act on the said roller when at rest on the pile, that the said adhesive
roller should have a period of rest after it has been raised to allow any superfluous
sheets lifted to fall back on the pile, that the said roller should be capable of
rotation to allow of the grippers freely taking away the lifted sheet and that the
carrier on which the sheet is adjusted should be given a reciprocating motion to
deliver the said sheet to the printing or other machine.
Dated this 13th day of July 1893.
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Feeding Sheets of Paper to Printing,
Ruling, and like Machines.
I GEORGE DUNCAN of Clarendon Road, Egremont, in the County of Chester,
Engineer, 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:―
The object is to provide apparatus capable of feeding sheets from a pile singly
and with certainty to printing, ruling and like machines.
Apparatus under my invention consists (a) of an adhesive roller or its equivalent
to which rising and falling motion is imparted; (b) of a damping roller, pad, or
like device for imparting moisture to the adhesive roller or its equivalent; (c) of
grippers to take the lifted sheet from the adhesive roller and deposit it on a table
or carrier; and (d) of pushers and stops for regulating the position of the sheet on
the carrier.
It is essential in order to ensure correct action that the adhesive roller should
be free to descend and rest on the sheets of paper as the pile diminishes, that the
damper should act on the said roller when at rest on the pile, that the said
adhesive roller should have a period of rest after it has been raised to allow any
superfluous sheets lifted to fall back on the pile, that the said roller should be

page_text: capable of rotation to allow of the grippers freely taking away the lifted sheet,
and that the carrier on which the sheet is adjusted should be given a reciprocating
motion to deliver the said sheet to the printing or other machine.
C
The accompanying drawing is a side view of my apparatus and so much of a
printing machine as is necessary to illustrate my invention. a is the main frame.
6 the impression cylinder. c is an adhesive roller carried on a shaft c¹ free to
rotate in bearings d resting in slots e in the rods f which rods together with the
roller c have rising and falling motion imparted to them by the cams 9 on the
shaft h. Motion is given to the shaft h by chain or other gear as may be found
convenient. i is a damping pad or equivalent device resting on the adhesive roller c
and secured to rods ; hinged at k so as to allow the pad i to follow the roller c in
its rising and falling motion. 7 are grippers of any usual kind mounted on
oscillating levers m for taking a sheet of paper from the roller e and .laying it on
the table or carrier n the grippers are closed to seize a sheet by the lever o striking
against the projection p and are opened to release the sheet by the lever o striking
against the projection g. r is a cam on the shaft h for giving forward motion to
the oscillating levers m. s spring for giving backward motion to the oscillating
levers m.
t is a detent on the lever m taking into a ratchet wheel u on the shaft
of the adhesive roller c. vis a pusher for pushing a sheet on the table n towards
the impression cylinder. wis a pusher for pushing the sheet sideways into the
desired position. a is a stop for preventing the sheet being pushed too far towards:
the impression cylinder. y is a cam on the shaft h for giving motion to the
pusher by means of levers and rods z. 2¹ set screw for adjusting the position of
the pusher the pusher w is operated by the lever 1 on the rocking shaft 2 carried
in bearings on the table n. Motion.is given to the rocking shaft 2 by the lever
and slotted rod 3 which are operated by the lever z. weight for withdrawing.
the pushers and w. The table n is hinged at n¹ and has reciprocating or
oscillating motion imparted to it by means of the rods and levers 4 operated by
the cam 5 on the shaft h. 6 feed table and pile of sheets. 7 pins or brushes to
detach any sheets adhering to the one being lifted.
S
The action of the apparatus is as follows:-The adhesive roller c is allowed to
descend and rest freely on the upper sheet of the pile, the slots in the rods f
allowing the roller to descend further as the pile diminishes. The said roller is
then slowly raised by the rods f carrying with it the upper sheet from the pile and
remains stationary for a short period the pins or brushes 7 assisting to detach any
loose sheets which now and again adhere to the upper one. The grippers / then
seize the edge of the sheet, draw it away from the adhesive roller and lay it on
the table n.
At the same time the detent t partially rotates the ratchet wheel u
and with it the adhesive roller c so as to present a fresh surface to the sheet next
to be lifted, the pad i damping the surface of the roller c so as to ensure adhesion.
The pusher v now advances and pushes the sheet towards the cylinder b up to the
stop 2. After the pusher has moved a part of its travel, the pusher w comes into
operation by means of the slotted rod and levers 3 and 1, and pushes the sheet
sideways into the proper position. The pushers then withdraw and the end of the
table n² is raised so that the sheet thereon may be seized by the grippers of the
impression cylinder, b, in the usual manner. The table then falls away and the action
above described is repeated.
It will be obvious that various equivalent arrangements of mechanism may be
used to give motion to the adhesive roller grippers and pushers besides those above
described.
It should be borne in mind that a series of discs can be used in place of the
adhesive roller.
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 :-
--
First. In apparatus for feeding sheets of paper the combination of an adhesive

page_text: roller or series of discs a damping pad or equivalent device and grippers.
substantially as and for the purposes set forth.
Second. In apparatus for feeding sheets of paper the combination of an adhesive
roller or series of discs a damping pad or equivalent device, grippers, pushers and
stop substantially as and for the purposes set forth.
Third. The combination of appliances for feeding sheets of paper substantially
as hereinbefore described and illustrated by the drawings for the purpose set.
forth.
J. T. KING,
Agent.