Improvements in Starting Apparatus for Gas and other Motors.
Year: 1893

page_text: Date of Application, 7th July, 1893
Complete Specification Left, 9th Apr., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Starting Apparatus for Gas and other Motors.
We, JOHN BROKENSHIRE FURNEAUX of Victoria Works, Gateshead-on-Tyne
in the County of Durham, Engineer, and EDWARD BUTLER of Windermere
Street, Gateshead-on-Tyne, aforesaid, Engineer, do hereby declare the nature of
this invention to be as follows :-
This invention relates to starting apparatus for imparting by spring power to a
motor shaft such as the main shaft of an explosive motor engine a few preliminary
sharp turns.
For this purpose in conjunction with a hollow shaft forming a part clutch to
which one end of a spring is attached there are arranged two longitudinally slidable
part clutches connected in such-wise that by means of a spring acting through a
releasing lever the hollow shaft will normally be locked against rotation during
which time the starting spring can be wound up, and that by moving the releasing
lever when the spring is wound up the two part clutches will be moved into relative
positions in which by the one part clutch the hollow shaft will be released and by
the other part clutch the motor shaft will be so connected to the hollow shaft as to
be driven therefrom when the hollow shaft is rotated by the starting spring as
hereafter explained.
A starting spring of a flat section coiled spirally is suitable.
The inner end of such a spring is coiled to a diameter to receive an enlarged end
of the hollow shaft to which it is secured by a stud; the said end of the hollow
shaft is next the motor to be driven and is toothed and forms with the one sliding
part clutch which is keyed to the motor shaft and supplied with teeth a non-
return clutch we will for distinction call the driving clutch. The sliding part of
the driving clutch is connected with a second sliding part clutch by a draw-bar
buffer spring and distance sleeve this second part clutch forms a sliding fit on a
collar which is keyed fast to the end of the hollow shaft and is provided with wedge
shaped teeth for engagement with similar teeth arranged around the end of the
boss of the frame.
The outer end of the starting spring is secured by a stud to an angle iron
fastened to a disc carried by the frame and free to turn therein.
Suitable means are provided for winding the spring such as a hand ratchet
arrangement with a removable handle fitting into a socket attached to a lever with
a pawl and spring for engagement with ratchet teeth arranged around the outer
edge of the disc there being a second pawl and spring pivoted to the frame.
On the starting spring being wound up the teeth of the sliding part of the
locking clutch will be in gear with similar teeth on the frame. The inner end of
the spring will thus be held against the power applied to the outer end.
In order to transmit the energy stored in the spring for the purpose of turning
the motor shaft the teeth on the sliding part of the locking clutch are disengaged
from teeth of the frame by moving the said part of the clutch by means of the
releasing lever and simultaneously the sliding part of the driving clutch is drawn
into gear with the part clutch at end of the hollow shaft by means of the connecting
bar and buffer spring. As soon as the rotation of the shaft has allowed the spring
to run down, the releasing lever is released whereupon the sliding part of the
locking clutch is forced back by the locking spring and through the distance sleeve
disengages the sliding part of the driving clutch thus freeing the motor shaft from
the spring; a cover is provided that serves as a guide to the spring and to prevent
it from becoming too much unwound.

page_text: For motors requiring more turning moment than can conveniently be imparted
by energy stored in one spring as described, the spring seat of the hollow shaft
may be prolonged to receive two or more springs side by side, the angle piece
being similarly lengthened; in this case interval discs or washers might be
interposed between the edges of the springs coming next each other.
Dated this 7th day of July 1893.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Starting Apparatus for Gas and other Motors.
We, JOHN BROKENSHIRE FURNEAUX, of Victoria Works, Gateshead-on-Tyne
in the County of Durham, Engineer, and EDWARD BUTLER, of Windermere
Street, Gateshead-on-Tyne, aforesaid, 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 :-
This invention relates to starting apparatus for imparting by spring power to a
motor shaft such as the main shaft of an explosive motor engine a few preliminary
sharp turns.
For this purpose in conjunction with a hollow shaft forming a part clutch to
which one end of a spring is attached there are arranged two longitudinally slidable
part clutches connected in such wise that by means of a spring acting through a
releasing lever the hollow shaft will normally be locked against rotation during
which time the starting spring can be wound up, and that by moving the releasing
lever when the spring is wound up the two part clutches will be moved into relative
positions in which by the one part clutch the hollow shaft will be released and by
the other part clutch the motor shaft will be so connected to the hollow shaft as to
be driven therefrom when the hollow shaft is rotated by the starting spring as
hereafter explained.
A starting spring of a flat section coiled spirally is suitable.
Referring to the accompanying illustrative drawings,
Fig. 1, shows in central longitudinal section starting apparatus according to this
invention applied to the shaft of a motor;
Fig. 2 is an end elevation; and
Fig. 3 a plan.
S is a starting spring of a flat section coiled spirally; its inner end being coiled
to a diameter to receive the enlarged end of the hollow shaft R, to which it is
secured by a stud d'; the said end of the hollow shaft is next the motor G to be
driven; it is toothed at t and forms with the sliding part clutch C¹ which is keyed
to the motor shaft M and supplied with teeth t a non-return clutch we will for
distinction call the driving clutch. The sliding part C' of the driving clutch is
connected with a second sliding part clutch C by a draw-bar W buffer spring S³
and distance sleeve V; the part clutch C2 forms a sliding fit on a collar E, which
is keyed fast to the end of the hollow shaft R, and is provided with wedge shaped
teeth for engagement with similar teeth arranged around the end of the boss of
the frame F.
The outer end of the starting spring S is secured by a stud d² to an angle iron J
fastened to a disc I carried by the frame F and free to turn therein.
Suitable means are provided for winding the spring; in the example we shew a
hand ratchet arrangement H¹ being a removable handle fitting into a socket K¹
attached to a lever L furnished with a pawl P₁ and spring S₁ that causes engage-
ment of the pawl with ratchet teeth T arranged around the outer edge of the disc 1;
there being pivoted to the frame F a second pawl P² with spring St.

page_text: On the starting spring S being wound up the teeth 3 of the sliding part C² of
the locking clutch will be in gear with the similar teeth on the frame F. The
inner end of the spring will thus be held against the power applied to the outer
end.
In order to transmit the energy stored in the spring for the purpose of turning
the motor shaft M, the teeth on the sliding part C of the locking clutch are
disengaged from the teeth of the frame by moving the said part C of the clutch
by means of a releasing lever L' (operated through removable handle H³ fitting
into socket K2) and, simultaneously, the sliding part C² of the driving clutch is.
drawn into gear with the part clutch at end of the hollow shaft R by means of the
connecting bar W and buffer spring S². As soon as the rotation of the shaft has.
allowed the spring to run down, the releasing lever L' is released, whereupon the
sliding part C of the locking clutch is forced back by the locking spring S³ and,
through the distance sleeve V, disengages the sliding part C' of the driving clutch,.
thus freeing the motor shaft M from the spring S; a cover X is provided that
serves as a guide to the spring and to prevent it from becoming too much unwound.
For motors requiring more turning moment than can conveniently be imparted
by energy stored in one spring as described, the spring seat of the hollow shaft R
may be prolonged to receive two or more springs, side by side, the angle piece J
being similarly lengthened; in this case we should interpose interval discs or
washers between the edges of the springs coming next each other.
Having now particularly described and ascertained the nature of the said inven--
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A spring starting apparatus of the kind referred to wherein a hollow shaft
such as R forming a part clutch, a starting spring one end of which is attached to
the said hollow shaft and the other end to a disc or part adapted to be operated by
suitable winding gear, two longitudinally slidable part clutches such as C¹ C' one
on the motor shaft and the other on the said hollow shaft, a draw bar, a buffer
spring, and a distance sleeve are arranged in suchwise that by means of a spring
acting through a releasing lever the hollow shaft will normally be locked against
rotation, during which time the starting spring can be wound up, and that by
moving a releasing lever when the starting spring is wound up the two part
clutches CC can be moved into relative positions in which by the one part clutch
the hollow shaft will be released and by the other part clutch the motor shaft will
be so connected to the hollow shaft as to be driven therefrom when the hollow shaft
is rotated by the starting spring substantially as described.
2. Starting apparatus for gas and other motors constructed arranged and
operating substantially as described and illustrated in the accompanying drawings.
Dated thin och 1.
11004