IMPROVEMENTS IN AND RELATING TO FEEDING PAPER OR OTHER MACHINES AND MECHANISM EMPLOYED PRINTING AND OTHER MATERIAL TO THEREFOR AND CONSISTS IN IMPROVEMENTS ON PATENTSNUMBER.
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Frederick Hoyer at the Office of the
Commissioners of Patents on the 7th October 1882.
FREDERICK HOYER of. 59 Cornwallis Street Liverpool in the County of
Lancaster IMPROVEMENTS IN AND RELATING TO FEEDING PAPER OR OTHER
MACHINES AND MECHANISM EMPLOYED
PRINTING AND OTHER
MATERIAL TO
THEREFOR AND CONSISTS IN IMPROVEMENTS ON PATENTS NUMBER 2855. A.D.
1880 AND NUMBER 2457 A.D. 1881 AND NUMBER 5241 A.D. 1881
My invention relates to improvements in and relating to feeding paper or other
material to printing and other machines and mechanism employed therefor and
consists in improvements on Patents Number 2855 A.D. 1880 and Ņumber 2457
A.D. 1881 and Number 5241 A.D. 1881
First in an improvement for regulating the lifting of the sheets of paper from
the pile of paper upon the rear table and preventing disarrangement of the under
sheets.
Secondly in an improvement for controlling the movement of the sheets of paper
on front or feed table.
Thirdly in improved construction of side wiper on the front or feed table.
Fourthly in improvements in connection with the lifting suction chamber and the
working thereof.
Fifthly in improvement in mechanism for raising the rear table.
Sixthly in improved arrangement in constructing a blowing and an under suction
chambers in connection with the rear table.
Seventhly in improvement in side slotted levers
Eighthly in improvement for controlling the back edges of the pile of paper
Ninthly in devices for the better prevention of two sheets of paper being fed
forward at one time and to secure the return of any second sheet lifted up to
picking up position or its removal
Tenthly in a device for warning the attendant should the lifting suction chamber
fail to pick up any sheet at all.
Eleventhly in improved overhead roller for feeding paper forward on to the
front or feed table after delivery by lifting suction chamber on to the receiving
roller and in the shaft carrying the same.

page_text: Under the first part my improvement consists in providing a series of pins or
bristles or their equivalent so placed as to overlap the rear edge of the pile of paper
upon the rear table so that when the top sheet of the pile of paper is drawn up
against the lifting.suction tube these pins catch the free edge of the sheet and bend
it downwards keeping it still under the influence of the under suction so that should
any second sheet adhere it may be drawn off. These pins I fix conveniently and so
balance the supporting rod or its equivalent by an adjustable weight or other
suitable means that they yield readily to the up-movement of the sheet held by
the lifting chamber when this moves off and yet is heavy enough on to catch and
prevent any second sheet from following the first. These pins may be worked off
a cam if desired.
Under the second part I provide a sliding strip of brass or other suitable material
bearing points or portions so cut at intervals as to bend upwards so as to reach just
above the plane of the tapes upon the feed table the points or portions being so
rounded off or bent that the front edge of the moving sheet of paper passes over
them without impediment. The strip of brass with these projecting points may be
moved on the table to suit the varying sizes of paper so as just to keep the back
edge of it free from the tapes when the front edge has reached the front gauges of
the printing machine so that it case of light paper the sheet may not be curled
over at the rear by the tapes catching the back edge when so positioned. An easy
way of arranging the positioning of the brass strip would be by having a pin
at either end and a set of holes an inch apart in the table for the pins to drop into
at either side
Under the third part. I first provide a wire or its equivalent one on either side of
the rubber forming the side wiper fixed to the revolving spindle carrying the rubber
and so bent that as the rubber of the wiper operates upon the sheet of paper the
wires are just free of the sheet and yet so close to the paper as to prevent the side
edge of the sheet of paper from buckling or crumpling against the side gauge under
the drawing wipe of the rubber should such he too heavy for the substance of the
paper to bear without buckling or crumpling and yet otherwise necessary in case of
lage sheets to draw it with certainty to the side gauge. Secondly under this part
1 provide an arrangement whereby 1 keep the whole of the working parts of the
side wiper in one piece of mechanism so that so that the mitre wheels revolving the
rubber wiper and side gauge move together when its position is being changed on the
table and must always keep square with the front gauges the whole being held
steady upon the table when adjusted for working by a sliding bar working upon
a cross bar carrying the smoothers and having two set screws one fixing the
sliding bar to the cross bar and the other resting in a slot in the wiper piece which
on being screwed down tightens the side gauge against the table.
Under the fourth part instead of the long curved racks and large pinion-wheels
bolted on to the lifting suction chamber I provide a perpendicular rack working
against the side of one of the upright lovers carrying the lifting suction chamber.
Through the lifting suction chamber 1 pass a.shaft and on one end I key a small
pinion wheel which works into said perpendicular rack At the middle of the rack
piece I provide a boss carrying a stud provided with a friction roller which works in
a suitably shaped slotted frame or cam attached to the frame work of the feeder so
that as the upright lever moves motion is given to the rack and this acting on the
pinion wheel keyed to the lifting chamber shaft a partial revolution more or less' is
given to the lifting chamber bringing it alternately into position for picking up
and delivering the sheet of paper. Availing myself of this arrangemont I give the
lifting suction chamber a slight partial revolution independently of the said slotted
frame or cam as it comes into picking up position. I provide a lever worked by a
cam upon the shaft driving the separators on the rear table or by other suitable
means. The said lever is supported by a stud suitably placed and as the upright
levers work over it comes in contact with a stud suitably fixed in the rack pieco
aforesaid the rack is forced upwards room having been allowed for this in the
slotted frame or cam aforesaid and thus the lifting chamber receives a slight partial¯|

page_text: revolution just after sucking up a sheet of paper. This partial revolution opens off
the edge of the sheet. held by the lifting cylinder away from the pile of paper thus
reducing or obviating the upward waft given to the under sheets as the topmost
sheet moves away from the pile. In connection with the lifting suction chamber
itself I provide one end of the tube thereof with a stout metal ring turned to work
into another metal ring with central boss attached to the periphery by two or more
arms and which second ring is suitably attached to the end of one of the upright
levers aforesaid. The shaft running through the tube as before mentioned is keyed
on to this second ring aforesaid and to a stout metal plate with central boss which
closes the other end of the tube by this arrangement I do away with the over
arching air tube from the fan or exhaust as I can easily attach the tube from the
fan to the rim of the second ring attached to the top of the upright lever by means
of another ring to be screwed against it carrying a short horizontal tube connected.
with a suitably shaped tube from the fan whilst the lifting suction chamber is free
to revolve.
Under the fifth part I provide a bar of metal bent upwards at one end whilst
the other end works upon a stud suitably placed. In the required place in this bur,
I place a pin which works upon a pawl moving the ratchet wheel connected with
the lifting screws on the rear table this pawl being carried by a stud suitably.
placed on one of the upright levers The end bent upwards carries a crank-piece
adjustable by means of a set screw and upon this crank the bar carrying the
separators works. This bent end is gripped or held by two springs suitably placed,
and by which it is held in position till either the bar of the separators or the boss
of the pawl as it passes under it, depresses or raises it. I may modify this arrange-
ment employing other mechanisin.
Under the sixth part I provide an under suction chamber in a box form through
which at intervals I pass short metal tubes soldered in back and front the tubes
being provided with oval mouth pieces on the side giving on to the rear table the
other ends being fully open. I now bend round the back of the under suction
chamber a sheet of metal in such way as to form a suitable chamber for the air
from the fan closing up both ends so that the two chambers are in one the
connection with the respective chambers with the respective tubes to and from the
fan being underneath and side by side. Taking advantage of this arrangement I
provide a casting having two rings for forming shut off valves side by side and
thus get both the valves upon one spindle so that I can thus close the one and open
the other by one movement as the suction and blast must not be on at the same
time.
Under the seventh part my improvement consists in so constructing the side
levers moving the upright levers carrying the lifting suction chamber that I do
nway with the longitudinal slot and supporting studs which come in the way at
times and in place thereof I use a supporting lever rocking on a pin carried by a
plate set in the floor the other end being bolted to the said side lever in a suitable
position.
Under the eigthth part my improvement consists in forming the weight lying
upon the edge of the pile of paper next. the feed table and which prevents the
sheets from riding up over the gauge when being disturbed by the separators in
the shape of a light rod slung upon hinges or other suitable arrangement. This rod
carries one or more revolving rollers which rest on the pile of paper being kept in
position by suitable means at suitable intervals.
Under the ninth part my improvement consists in providing a brush or wiper
which comes forward as the lifting chamber moves off with a sheet and dropping
against the paper where held against the said lifting chamber gently wipes or
brushes the sheet of paper so that if any second sheet should be adhering to the one
held by the lifting chamber it may be disturbed sufficiently to cause it to slide o!f*
and resume its position on the pile of paper. Such arrangement might be made to
operate just prior to delivery of sheet if desirable or might be attained by an over-
head suction tube coming down upon the up-turned sheet as held by the lifting

page_text: chamber and which would draw off any second sheet as the lifting chamber still
moved forwards arrangements being made for the removal of any such second
sheet or for its return to position on the pile of paper.
Under the tenth part I utilize the increased indraft of air into the lifting suction
chamber caused by absence of any sheet against the air passages therein to cause a
sound to be produced by a whistle or other suitable means so that the attendant is
warned that there is no sheet being fed forwards.
Under the eleventh part I employ a tube (instead of a solid shaft) of brass or
other metal fitting in either end of such tube suitable solid pieces to run in tho
bearings provided therefor. This shaft tube carries one or more rollers which I
construct of a circle of wood of suitable diametre bored in the centre to fit on to
said shaft and grooved round the periphery. I then saw such circle in half and
spring on a thick rubber ring which keeps the wood together and tight on the
shaft and yet allows the disc to be moved along the shaft the contraction of the
rubber to hold it in the position on the tube shaft it is placed in. Of course
a solid shaft may be employed if desirablo such being made of any suitable material
and any suitable material may be used for the rollers.
I do not confine myself solely to the mechanisms herein described for obtaining
any of the movements or objects sought to be obtained and which are specified
herein but hold myself free to use any modifications or means presenting themselves
upon after consideration for the better accomplishing the purposes indicated heroin
as being sought for