Improvements in Punching and Shearing Machines.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Punching and Shearing Machines.
We, JAMES SMITH and HUGH WILSON SMITH, both of the Firm of Smith
Brothers and Company, Kingston Engine Works, Kinning Park, in the County
of Renfrew, Engineers, do hereby declare the nature of this Invention to be as
follows:-
This Invention relates to punching machines or punching and shearing
machines or the like, of the class which are provided with more than one punch or
shear, in order to permit of punching or otherwise cutting out holes or notches in.
stringer or other plates with punches of different powers, or for shearing channel
bars, Z bars, angle bars or the like, and it has for its object to arrange the driving
gear and actuating shafts to actuate the punches or punches and shears at one or
other sides of the machine at a slower speed than the small punches or punch
and shear when all are working at one time.
To that end in the eccentric type of punching or punching and shearing machines
besides employing the usual gear for driving the small punches or punch and
shear we key upon the pulley or other power shaft an extra pinion and gear it
with a wheel loosely centred on an intermediate shaft, and this latter wheel has
formed integral with or secured to it a pinion which gears with a large spur
wheel loosely centred on the punch actuating shaft; said spur wheel
having the cam cast on, secured or fixed to it, this cam actuating the lever arm
of the side punch or shears; or we key upon the pulley or other power shaft an
extra pinion and gear it with a large spur wheel loosely centred on the punch
actuating shaft; said spur wheel having the cam cast on, secured or fixed to it;
or we may employ an extra intermediate shaft or shafts with wheels keyed on,
instead of the loose centred wheels on intermediate shaft already described. In
each case the cam acts either direct on the lever arm or upon a slipper on the lower
side of the arm of the large punch or shear.
In a modification the cam shaft in the cam and lever type of punching machines
or punching and shearing machines or the like has a pinion keyed on same geared
to a toothed wheel on a countershaft, and this countershaft is also provided with
a pinion which is in turn geared to a toothed wheel on the side punch or shear
actuating shafts, or the side punch actuating shaft may be geared direct from the
cam shaft by toothed pinion and wheel. The shaft for actuating the side punch
or shear in this lever type of punching machine is a separate shaft from the cam
shaft. Or in another modification we may key upon the first or second motion
shaft an extra pinion and gear it with large spur wheel on the shaft for actuating
the side punch or shear, or we may employ between the pulley or other power
shaft and side punch actuating shaft either loosely centred wheels or an extra
countershaft or shafts with wheels keyed on same to reduce the speed of the side

page_text: punch or shear actuating shaft to a slower speed than the small punch actuating
shaft.
Dated this 23rd day of November 1896.
WALLACE FAIR WEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent' Agents,
2 Saint Vincent Street, Glasgow, Agent for the Applicants.
Improvements in Punching and Shearing Machines.
We, JAMES SMITH and HUGH WILSON SMITH, both of the Firm of Smith
Brothers and Company, Kingston Engine Works, Kinning Park, in the County
of Renfrew, Engineers, 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 Invention relates to punching machines or punching and shearing
machines or the like, of the class which are provided with more than one punch or
shear, in order to permit of punching or otherwise cutting out holes or notches in
stringer or other plates with punches of different powers, or for shearing channel
bars, Z bars, angle bars or the like, and it has for its object to arrange.the driving
gear and actuating shafts to actuate the punches or punches and shears at one or
both sides of the machine at a slower speed, than, the small punches or punch
and shear when all are working at one time.
The Invention is illustrated by the accompanying drawings Figs. 1 and 2
being side elevations at right angles to each other of a punching and shearing.
machine.constructed in accordance with our Invention, and Figs. 3, 4, 5 and 6
are views of modifications thereof hereinafter particularly referred to.
In carrying out the Invention with reference to the eccentric type of punching
or punching or shearing machines shown at Figs. 1 and 2 besides employing the
usual gear for driving the small punches or punch A and shear B we key upon
the pulley
or other power shaft C an extra pinion D and gear it with a wheel E
loosely centred on an intermediate shaft F, and this latter wheel E has formed
integral with or secured to it a pinion G which gears with a large spur wheel H
loosely centred on the punch actuating shaft I; said spur wheel H having the
cam J cast on, secured or fixed to it, this cam J actuating the lever arm K of the
large punch or shear; or we key upon the pulley or other power shaft A an extra
pinion and gear it directly with a large spur wheel loosely centred on the
punch actuating shaft; said spur wheel having the cam cast on, secured
or fixed to it; or we may employ an extra intermediate shaft or shafts
with wheels keyed on, instead of the loose centred wheels on intermediate shaft
already described. In each case the cam acts either direct on the lever arm K
or upon a slipper L on the lower side of the arm of the large punch or shear.
In a modification the cam shaft M in the cam and lever type of punching
machines or punching and shearing machines shewn at Fig. 3, or the like, has a
pinion N keyed on same geared to a toothed wheel O on a countershaft P, and this
countershaft P is also provided with a pinion Q which is in turn geared to a
toothed wheel R on the side punch or shear actuating shaft I, or the side punch
actuating shaft I, may, as shewn at Fig. 4, be geared direct from the cam shaft M
by 'toothed pinion T and wheel U. The shaft I for actuating the side punch or
shear in this lever type of punching machine is as illustrated at Figs. 3 and 4,
a separate shaft froin the cam shaft. Or in another modification as shewn at
Figs. 5 and 6 we may key upon either the first or second motion shaft an extra

page_text: pinion V and gear it with a large spur wheel W on shaft I for actuating the side
punch or shear at a lower speed than the smaller punch and shear; or we may
also employ between the pulley or other power shaft C and the side punch
actuating shaft either loosely centred wheels or an extra shaft or shafts with
wheels keyed on same and geared so as to actuate the shaft I at a slower speed
than the small punch actuating shaft.
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:-
1. In a combined punching machine or punching and shearing machine the
arrangement of gearing for operating a larger side punch at a slower rate than
the smaller punches or punch and shears substantially as described.
2. The improved punching machine or punching and shearing machine con-
structed and arranged to operate substantially as described with reference to
Figures 1 and 2.
3. The improved punching machine or punching and shearing machine con-
structed and arranged to operate substantially as described with reference to
Figure 3.
4. The improved punching machine or punching and shearing machine con-
structed and arranged to operate substantially as described with reference to
Figure 4.
5. The improved punching machine or punching and shearing machine con-
structed and arranged to operate substantially as described with reference to
Figure 5.
6. The improved punching machine or punching and shearing machine con-
structed and arranged to operate substantially as described with reference to
Figure 6.
1007
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 Saint Vincent Street, Glasgow, Agent for the Applicants.