A Lever and Clutch Gear for Protection from Accidents from Chaff Cutters (Steam or Hand Power) when the Attendants are Feeding same.
Year: 1896

page_text: Date of Application, 15th July, 1898
Complete Specification Left, 8th Feb., 1897-Accepted, 3rd Apr., 1897
PROVISIONAL SPECIF SATION.
A Lever and Clutch Gear for Protection from Accidents from Chaff
Cutters (Steam or Hand Power) when the Attendants are
Feeding same.
We, GEORGE CORNISH, and WILLIAM ARTHUR LLOYD, Engineers, of the Risbygate
Foundry and Engineering Works, Bury St. Edmunds, Suffolk, do hereby declare the
nature of this invention to be as follows:-
Our invention relates to chaff cutters and like machines and has for its object to
provide means for very quickly stopping or reversing the direction of motion of
the machine whereby the risk of accident to the attendant feeding the machine is
very considerably reduced.
With machines of the ordinary type if the attendant's hand or a portion of his
clothing is caught in the feed rolls a very serious accident happens owing to the
difficulty of stopping the machine with sufficient rapidity.
According to our invention we so construct the gearing between the machine shaft
and the counter-shaft that the former may be put out of gear very quickly and its
direction reversed if desired by the attendant himself.
In order that the nature of our invention may be clearly understood we will proceed
to describe how we may carry the same into practical effect.
We drive the machine shaft from a counter-shaft at right angles thereto through a
bevel wheel on the end of the machine shaft. The counter-shaft is provided with two
bevel pinions gearing with the aforesaid bevel wheel, said pinions being capable of
rotating on the counter-shaft but not of moving axially relatively thereto. The
counter-shaft is further provided with a clutch which rotates with said shaft but which
can be moved along the same by means of a lever so as to engage with either one of
the two bevel pinions aforementioned. The clutch lever is arranged so as to be
readily operated by the attendant when required. It will be obvious that if the
counter-shaft be rotated continuously the direction of rotation of the bevel wheel and
machine shaft is determined by the bevel pinion which is clutched in gear by the
lever; consequently when the machine is running with one of the pinions in gear
if the clutch lever be pushed over, said pinion is disconnected and then the
other pinion put in gear so that the direction of rotation of the machine shaft is
reversed.
We may further arrange the clutch lever so that if an accident happen by which
the attendant is caught in the machine and rendered helpless the pull of the
machine will bring him in contact with the clutch lever so as to operate the same
and reverse the direction of motion of the machine shaft as hereinabove described.
Dated this 15th day of July 1896.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
.
A Lever and Clutch Gear for Protection from Accidents from Chaff
Cutters (Steam or Hand Power) when the Attendants are
Feeding same.
We, GEORGE CORNISH, and WILLIAM ARTHUR LLOYD, Engineers, of the Risbygate
Foundry and Engineering Works, Bury St. Edmunds, Suffolk, 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 :-
Our invention relates to chaff cutters and like machines and has for its object to
provide means for very quickly stopping or reversing the direction of motion of the
machine whereby the risk of accident to the attendant feeding the machine is very
considerably reduced.
With machines of the ordinary type if the attendant's hand or a portion of his
clothing is caught in the feed rolls a very serious accident happens owing to the
difficulty of stopping the machine with sufficient rapidity.
According to our invention we so construct the gearing between the machine shaft
and the counter shaft that the former may be put out of gear very quickly and its
direction reversed if desired by the attendant himself.
In order that our invention may be clearly understood we will now proceed to
describe the same with reference to the accompanying drawings in which
Figure 1 is a side elevation and
Figure 2 an end elevation illustrating our improved gearing.
A is the machine shaft which is provided with a bevel wheel A' through which it is
driven through a counter shaft B, said counter shaft being connected through suitable
gearing, spur wheels for example, as shewn at B', with the main shaft C. Motion is
conveyed from the counter shaft to the main shaft through one of two pinions DE
which are mounted on the counter shaft in such a manner as to rotate without being
capable of moving longitudinally thereon.
The counter shaft is provided with a clutch which rotates with said shaft, and can
also be moved along the same by means of a lever G so as to engage with either the
pinion D or the pinion E as desired. The form illustrated in the drawings shews the
pinions D and E provided with toothed portions D', E¹ which can engage with
corresponding toothed portions F at each end of the clutch F. The connection
between the clutch F and lever G may be made by means of a fork provided
with pins engaging in a groove on the clutch. The lever G which is pivoted to
the frame at G is connected through a link G2 to a second lever G pivoted to the
frame at G4.
The action of the device is very simple and is as follows:-In the position of the
levers shewn in full lines in Figure 1 the clutch F is in engagement with the bevel
wheel D, and if the counter shaft B be continuously rotated in the direction of the
arrow for example, the bevel wheel A' and machine shaft A will be rotated in a
clockwise direction as shewn by the arrow thereon. If now the levers are moved to
the position shewn in dotted lines in Figure 1 the clutch F releases the pinion D and
engages with the pinion E, and since the direction of motion of the counter shaft B
is constant it will readily be seen that the bevel wheel A¹ and machine shaft. A
will have tlie direction of rotation reversed. Hence if in the first position of the
levers the direction of rotation of the machine shaft is such that the material is fed
into the machine, in. the other position of the levers the direction of motion will
be reversed, and anything caught in the machine feed will be ejected. We prefer to
arrange the clutch lever G so that if an accident happens by which the attendant is
caught in the machine and rendered helpless the pull of the machine will bring him

page_text: in contact with said lever so as to operate the same and reverse the direction of motion
of the machine shaft as hereinabove described.
Although we have herein illustrated a machine embodying our invention we wish it
understood that considerable variation in detail can be made without departing from
the spirit of the invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
The improved driving gear for chaff cutters and like machines constructed and
operating substantially as described.