Improvements in Driving Mechanism, suitable for Use in connection with Gill-boxes and other Machines.
Year: 1895

page_text: Date of Application, 24th Dec., 1895
Complete Specification Left, 24th Sept., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Driving Mechanism, suitable for Use in connection
with Gill-boxes and other Machines.
I JULIEN VAN SPRANGH of Grand Place, Tournai, Belgium, do hereby
declare the nature of this invention to be as follows:-
This invention relates to driving apparatus which will effect the simultaneous
stoppage, in case of extraordinary resistance, of apparatus or devices that move
together such for example as the pairs of screws that serve to operate a set of
gill-box fallers.
For this purpose, instead of operating two devices of this kind by means of a
driving-shaft carrying two pinions or like driving parts, I fix these two driving
parts upon a hollow shaft which I actuate from the driving shaft of the gill-box
or other machine by means of a connection or coupling which I provide between
the said driving shaft and the said hollow shaft and which is strong enough to
overcome ordinary or normal resistance but is sufficiently weak to yield to
extraordinary or abnormal resistance.
In one arrangement according to this invention, the pinions for driving the pairs
of screws of a gill-box are fixed on a tube or hollow shaft which surrounds the
driving shaft of the machine and is driven thereby solely through the medium of a
pin or stud of soft metal which engages both in the driving shaft and in a suitably
shaped piece or cover of hard metal attached by screws on the tube to the tube or
hollow shaft and passing partially through the same. When the motion of the
pairs of screws meets with an abnormal resistance, the said pin becomes sheared
through or broken by the said hard piece or cover.
Instead however of being connected to the driving shaft by a pin which can be
sheared as above described the hard metal piece or cover may be pressed on the
said driving shaft by the screws which attach the said metal piece or cover to the
tube or hollow shaft so that the driving shaft can carry the said tube or hollow
shaft round with it by friction (as is done in some sleeve couplings) so long as the
said piece or cover be not caused by abnormal resistance to turn relatively to the
driving shaft.
Doted this 24th day of December 1905
Improvements in Driving Mechanism, suitable for Use in connection
with Gill-boxes and other Machines.
1, JULIEN VAN SPRANGH, of Grand Place, Tournai, Belgium, 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 driving apparatus which will effect the simultaneous
stoppage, in case of extraordinary resistance, of apparatus or devices that move

page_text: together such, for example, as the pairs of screws that serve to operate a set of
gill-box fallers.
For this purpose, instead of operating two devices of this kind by means of a
driving-shaft carrying two pinions or like driving parts, I fix these two driving
parts upon a hollow shaft which I actuate from the driving shaft of the gill-box or
other machine by means of a connection or coupling which I provide between the
said driving shaft and the said hollow shaft and which is strong enough to overcome
ordinary or normal resistance but is sufficiently weak to yield to extraordinary or
abnormal resistance.
In the accompanying drawings,
Fig. 1 shows partly in side elevation and partly in section, and Fig. 1A in cross
section, one arrangement according to this invention, Figs. 2 and 2 are similar
views showing a modified arrangement.
The bevel pinions F for driving the pairs of screws H of a gill-box are fixed on
a tube or hollow shaft G.(Fig. 2), or hollow shafts (Fig. 1) which surrounds or
surround the driving-shaft E of the machine and is or are driven thereby solely
through the medium of a pin or stud C of soft metal which engages both in the
driving shaft and in a suitably shaped piece or cover A. of hard metal which is
attached by screws B to the hollow shaft or shafts G as shown. By this means
it will be seen that when the motion of the pairs of screws meets with an abnormal
resistance, the said pin or stud C will become sheared through or broken by the
said hard piece or cover A and so prevent breakage of the gill boxes or other
parts driven from the shaft or shafts G. When two hollow shafts are used as in'
the arrangement shown in Fig. 1, the cover A serves to connect them together
endways.
Instead however of being connected to the driving shaft by a pin which can be
sheared as above described the hard metal piece or cover A may be pressed tightly
against the said driving shaft E by the screws B as in the arrangement shown in
Figs. 2 and 24, so that the driving shaft E will carry the said hollow shaft or
shafts G round with it by friction so long as the said piece or cover A and attached
parts are subject to the ordinary normal resistance, but will turn relatively to the
driving shaft E when subjected to an abnormal resistance.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
For effecting the simultaneous stoppage, in the event of abnormal resistance
being encountered, of sets of apparatus or devices adapted to move together, such
as the pairs of screws H that serve to operate a set of gill-box fallers, the use of a
hollow shaft or tube G (or shafts or tubes) arranged concentrically with a main
driving shaft E, and provided with driving pinions F, the said shaft or shafts G
being driven from the shaft E by means of a part A fixed on the said hollow shaft
or shafts and connected to the shaft E by suitable means, such as by one or more
metal pins, or by friction, that will enable sufficient power to be transmitted to
overcome ordinary or normal resistance of the parts to be driven but will yield to
abnormal resistance, substantially as herein described, for the purpose specified.
Dated this 24th day of September 1896.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.