Improvements in Machinery or Apparatus for Bronzing.
Year: 1890

page_text: Date of Application, 3rd Nov., 1890
Complete Specification Left. 30th July, 1891-Accepted. 5th Sept.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Bronzing.
I, JOHN EDWARD ROGERS of Sycamore Road Smethwick in the County of
Stafford Mechanical Engineer do hereby declare the nature of this invention to
be as follows:-
My improvements consist of a special design of gear for giving motion to the
drum or barrel that takes the sheet of paper on which the device required to be
bronzed has been prepared through the details of the machine necessary for
performing the operation of bronzing the same (see Moles Patent) 5443-1888.
For the purpose of carrying out my invention the design of gear I should use
would be a pair of spur wheels arranged as eccentric gear on their respective
shafts so that they would change the uniform motion of the driving shaft before it
reaches the drum to a quicker motion at one part of its revolution to what it
would go at another part.
By this arrangement of gear I am enabled to slow down the speed of the drumm
sufficiently to feed the sheets into the machine with ease.
The gripper in the drum for holding the sheet to be bronzed is kept closed in the
usual manner by springs and is opened by a lever attached to one end of same
passing over a fixed cam or incline on its radius as the drum revolves.
If under certain circumstances I thought fit I could arrange the gear to run
central that is use spur gear all through from driving shaft to drum.
Dated this 1st day of November 1890.
JOHN EDWARD ROGERS.
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Bronzing.
JOHN EDWARD ROGERS 85 Sycamore Road Smethwick Staffordshire
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 :-
Figs. 1. 2. and 3 of the accompanying drawings, shew side elevation, sectional
end elevation, and sectional side clevation, of machine constructed according to
my invention, Fig. 4 is a modification of gearing that may be used in the machine.
Like letters shew like parts in each fig.
The operation of the machine is as follows.
The fast pulley L₁ gives motion to shaft H, which shaft H is free to turn
independent of the drum or cylinder G, in its pedestals as shewn.
On shaft H is keyed the pinion F, which gears into the intermediate wheel E,
working on stud P, fixed in main frame of machine. Wheel E gears into wheel D
and the motion of wheel D is returned to drum or cylinder G through the special
eccentric gear C. B and A, in the following manner.
:
Motion being given to the fast pulley L', shaft H turns freely through drum or
cylinder G and gives motion to pinion F. keyed on shaft H, pinion F giving motion
to intermediate wheel E on stud pin P. The intermediate wheel E gives motion
to spur wheel D on stud I.
On stud I the eccentric wheel C turns in combination with, and is made fast to
spur wheel D by the stud R, or other similar device. The motion of eccentric
wheel C passes on through the intermediate eccentric wheel B, working on stud Q
to eccentric wheel A fixed on the end of drum, or cylinder G, by stud S.

page_text: Thus it will be seen that the eccentric gear C. B and A, changes the uniform
motion of spur wheel D into a variable speed in the revolution of the drum or
cylinder G.
This variable speed is taken advantage of, for the purpose of slowing the speed
of the drum or cylinder G down, when in the position shewn in Fig. 1. so that the
sheet containing the device to be bronzed may be easily fed into the gripper T.
The gripper T-takes and releases the sheets by means of the cam lever M. which
-is keyed on the end of gripper lever T. passing over in its revolution the stud N.
I may for some purposes use the eccentric wheels C. B and A, as central gear,
and give a continuous even motion to the drum or cylinder G, or I may use a
gear as shewn in Fig. 4, changing the speed of the drum or cylinder G twice in a
revolution.
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.
1. In a bronzing machine or apparatus the use of irregular gear for giving an
irregular motion to the drum or cylinder, substantially as shewn and described.
2. In a bronzing machine or apparatus, the main spindle H running freely
through drum or cylinder G, as shewn and described in combination with central
or irregular gear.
Dated this 29th day of July 1891.
JOHN EDWARD ROGERS.