Year: 1891

page_text: Date of Application, 26th June, 1991
Complete Specification Left, 14th Mar., 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Bronzing Machine.
JOSEPH HENRY BRIGGS Lithographer 304 Stanningley Road Bramley near
Leeds in the County of York do hereby declare the nature of this invention to be
as follows:-
This machine consists of two upright frames across; about the centre is a
revolving cylinder with one or two grips the cylinder is held by two eye bolts fixed
to the frame. On the top of the cylinder are revolving boss burnishers with rollers
at either side, the sheet is carried to the grip by a moving board. A box at the
front part contains the bronze under which a roller sweeps the bronze out on any
part of the sheet required being made to stop & start at will.
Between the bronze box & roller are slot plates to allow much, little, or no
bronze to come out onto any given part of the sheet. Any surplus bronze is swept off
the back rollers by a roller brush is thrown off & received by a fan & placed in the
front.
This invention relates to a more economical way of regulating the bronze to
where it is required on the sheet.
The machine is made thus -Two upright frames, across, about the center is a
revolving cylinder with one or two grips held at each end by an eye bolt so as to
higher or lower it quickly. The eye bolts are fixed to the frame. Across the top
of the cylinder are arranged several cog wheels fastened to bolts by two nuts each,
the bolts pass through holes in an iron plate in such a position as to keep the wheels
in gear.
Below the plate on the bolts are fastned round blocks of wood covered at
the bottom with felt or other similar material these I called boss burnishers, at
either side of these are two or more rollers some turned same way as the cylinder
& others the reverse to be covered by some soft material, plush, seal, or felt, or
flanelett or the like. Over the back or last one or two rollers is placed a brush
geared in such a way as to brush the rollers under it of any superfluons bronze
and conveniently is placed a rod across the brush longways so as to cause the
bronze accumulated on it to be thrown off while a fan draws it up & drops it into
a receptacle at the front ready to be reused, near by this is a bronze box which
reaches from end to end of the cylinder. One side of this box is hinged in the
form of a side lid, which can be regulated from the top to allow the bronze to be
brought from the box as is required, immediately underneath covered with seal
or the like, between this box & roller are placed slot plates of any suitable
material in such a way as to allow much, little, or no bronze to come form the box
in any given part.
The bronze in the box rests on this roller when the aforesaid plates are
withdrawn this roller has a cog wheel fixed on the end, geared to work. This is
another cog wheel which is continually going, by being geared to one of the other
cog wheels.
By having four or more plates fixed on the end of cylinder shaft which can be
moved & locked. To any part of its circumfarance over this works a lever, on the
loose end is fixed this aforesaid cog wheel in such a way as to lift & drop in & out
of gear, with this roller on which rests the bronze thereby instantly starting &
stoping the bronze from coming on to where it is or is not required, each revolition
or part revolition of the cylinder.
The board on which the sheet is placed to go through the machine is worked on
the cam principle. The sheet is put up to lays or rests that drop out of the way
as soon as the board moves to the grip & soon as the grip gits the sheet the board

page_text: moves back & the lays rise to receive the next sheet. Their are also movable lays
fixed on the board, this board & cylinder is covered with indiarubber or the like to
avoid slipping.
•
'
As the grip opens behind to releive the sheet, forks fall to and hold the sheet
from the cylinder as it slides down the board out of the machine.
Each roller throughout the machine is in a seperate compartment thereby preventing
the dust from one roller getting on the other except what is carried through by the
sheet necessary to work upon. A machine to bronze a sheet 24. by 34 weighs
about 3 to 4 cwts., extreme hight about 5 feet, stands on four legs reaching from
front to back from 3 to 4 feet running on wheels.
25th day of June 1891.
JOSEPH. HENRY BRIGGS,
304, Stanningley Road, Bramley, near Leeds.
COMPLETE SPECIFICATION.
Bronzing Machine.
JOSEPH HENRY BRIGGS Lithographer 304 Stanningley Road Bramley near
Leeds 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 machine consists of two side frames on the top of which are bolted two
pedestals to carry the main driving shaft, & pulleys (marked A. B. C Fig. 1.
Sheet 1). C drives the fan which is bolted to the cross stay casting (marked Y
Fig. 1 Sheet 1). The object of the fan is to draw the dust from the back dusting
rollers & return it to the front to be reused by means of the tin spout bolted to it
(marked E Fig. 1. & 2. Sheet 1).
The tin spout is 4" sq. at the top in which there is a hinged drawer (marked,a.
Fig. 1. Sheet 1) for the purpose of catching all bronze drawn from the rollers
when cleaning the machine. The spout runs out to 22" x 1" to give a easy exhaust.
Under the cross stay casting (Y Fig. 1. Sheet 1.) is the big burnishing roller
(marked Fig. 1. Sheet 1.) driven by the pulley & belt (marked B. Fig. 1 & 2.
Sheet 1.) the roller is 84" diam. & covered with scal or plush & is raised & lowered
in the side frames by means of the set screws above & below the roller. (This big
burnishing roller is to replace the boss burnisher's which too easily get out of order.)
On either of the big burnishing rollers are small burnishing roller's 34" dia. (marked d.
Fig. 1. Sheet 1.) covered with seal, or plush, or other polishing material, & held
by eye bolts in the side; for raising & lowering & driven by spur gear from the
big burnishing roller. Between these small burnishing roller's are wiping pads,
(marked e Fig. 1 Sheet 1.) covered with lamb skin for wiping the sheets as they pass
& also forming a partition for keeping the dust of one roller from getting to the
next; or in other words, keeping the back dusting roller's as clean as possible.
Underneath & across the centre is cylin. (marked H. Fig. 1 & 2. & in section Fig. 5
Sheet No. 2) held & revolving in two eye bolts to adjust it as required. The
cylin. consists of three cast iron disc's (marked f. Fig. 5 Sheet 2.) covered with
wood the one at each end having a small flange to keep the bronze from getting off
the cylin. & one in the middle to keep the wood from springing. The wood is
covered with a two ply indiarubber blanket, round the circumference as far as the
sheet extends. The cylin. has got one grip (marked Q Fig. 5. Sheet 2) (or more
as required) & are worked by means of a cam or lever (marked Q Fig. 1. Sheet. 1.
& Fig. 5. Sheet No. 2) which open & shut the grip as required. But to prevent
the bronze from getting inside the cylin. a door is hinged to the cylin. with a spirala
spring fixed to the inside of cylin. & under the door; thus keeping the door or lid
tight on the grip as it open's & shuts. The cylin. is 60" circumference & 25" wide
& is made to take a sheet 35" long & 221" wide; thus allowing 25" space. for the
fan (Fig. 3. Sheet 2.) to clean the back dusting roller's before the grip comes round

page_text: for another sheet; and there being no blanket on the cylin. only for the length of
sheet there is no wear on the roller's when the full sized sheet has passed. The
cylin. is geared by spur gear to the big burnishing roller (marked b. Fig. 1. Sheet 1.)
and on the end of the cylin. shaft are moveable plates (marked 3 Fig. 6 Sheet No. 2.)
which are set to work a radiating lever (marked I. Fig. 1. Sheet 1 & Fig. 6
Sheet 2) thus as cylin. revolves, the plates lift the lever end (marked M Fig. 6.
Sheet 2.) in which a slot hole is placed for a stud fixed to a sliding pin (marked S.
Fig. 1. Sheet 1. & Fig. 6 Sheet No. 2.) which carries a spur wheel which placed
in gear with the wheel on the brush roller end (marked R. Fig. 6. Sheet 2.) every
radiation of the lever I. (Fig. 1 Sheet 1 & Fig. 6 Sheet 2).
This brush roller brushes the bronze from the bronze box (F Fig. 7. Sheet No. 2
& Fig. 1 Sheet No. 1.) as required. This bronze box consists of a box 2' 0" wide
by 9" deep & 9" wide at the top, running out to 4" at the bottom; where it is
struck out to the same circle as the brush roller. The bottom of the box is covered
with fine wire mesh (marked 4 Fig. 7. Sheet No. 2) & upon the mesh are fixed slot
plates (marked 5 Fig. 7. Sheet No. 2.) for allowing much little, or no bronze to
come through, according to the fixing of the slot plates which fix with a thumb
screw in any position required. The bronze after leaving the bronze box is driven
down an incline of sheet iron (marked T Fig. 1. Sheet No. 1) by means of the
exhaust of the fan, onto a very small iron roller, held in a slot on either side &
turned by the friction of the cylin. so as to rise when a stout sheet passes through
the machine. The table (marked G. Fig. 1. Sheet No.. 1) consists of a ordinary
board 1" thick by 2' 4" broad & 27" long & is worked by a cam (marked N. Fig. 1.
Sheet 1. & Fig. 8. Sheet 2.) fixed on the cylin. end which works the lever (marked L
Fig. 1. Sht. 1. & Fig. 8. Sheet No. 2.) which rises the end of the table (marked E
Fig. 8 Sheet No. 2) by means of the connecting lever (marked W. Fig. 8. Sheet
No. 2) which is fited to an iron rod that holds the table, the rod that the lays are
screwed to is bent shape at each side with an hole at each end, which fits casyly
on to each end of the rod that holds the table, this bent rod that the lays are
screwed onto is supported by an ajustable pin, projecting inward from the machine
frame at each side (marked 7. Fig. 8 Sheet 2) then by the table being lifted to the
cylinder the lays are compeled to drop, because this bent piece at each side is push
off its resting pin the lays drop out of the way to allow the gripper to grip the
projecting edge of the sheet that is about a in. between the lays & edge of the
table.
(Fig. 1. Sheet No. 1.) surplus bronze box for catching the surplus bronze from
the machine; & it is emptied by a drawer at the bottom (marked P. Fig. 1. Sheet 1.)
back into the bronze box F (Fig. 1. Sheet No. 1).
K (Fig. 1. Sheet No. 1.) is the back or delivery board which is fixed below the
centre of the cylin. so that as the grip open's & the sheet hang's off from the cylin.
& the board end projecting it catches the sheet & the motion of the back roller's,
causes it to slide down the board as it leaves the machine.
Having particularly described & ascertained the nature of my said inven-
tion & in what manner the same is performed I declare that what I claim is
1st. The design of this machine.
2nd. The arrangement of supplying bronze economically viz. ;-Slot plates &
radiating lever for stopping & starting bronze roller (R) as required.
3rd. Board movement viz. ;-The bringing forward & raising the board for
applying sheets to the gripper.
4th. The automatic arrangement of rising & dropping the lays.