An Improved Small Wheel Lathe.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Small Wheel Lathe.
I, HARRY CLAUDE BOCQUET, of "Llanwye," Hampton Park, in the Town and
County of Hereford, Gentleman, do hereby declare the nature of this invention
to be as follows:-
-
This invention has reference to an improved small wheel lathe which can be
adapted for any gauge of railway and tramway wheels to face tires up to say 4 feet
in diameter, and to turn and true up outside journals of axles.
The way in which I carry out my invention is as follows:-
On a bed plate having two ordinary fixed centre headstocks and a pair of com-
pound slide rests for the operating tools, I arrange two A shaped standards which
may be of cast iron; these A shaped standards have hinged bearing caps at the
top which support a hollow cast steel carrier shaft of such dimensions as to take
the largest diameter of small wheel axles in use, the bearings of the pulley shaft
for driving the lathe being also carried by said standards. The driving gear
consists of a spur-wheel mounted on the hollow carrier shaft hereinafter described,
said spur-wheel being driven by a worm on the pulley shaft said pulley shaft being
at right angles to the axis of the lathe. The hollow carrier shaft is constructed
in two halves, horizontally, which may be called the upper and lower halves as the
said shaft must always be in this position when the work is inserted or disengaged.
The upper half is hinged to the lower half, one half of the above-mentioned spur-
wheel being permanently fixed to the latter; the other or loose half of the said
spur wheel is held in position by a couple of steel wedges and key pieces. A cone
pulley is provided on the pulley shaft for the different speeds. Set screws are
provided at each end of the hollow carrier shaft for the purpose of holding the axle
and wheels to be operated upon firmly in said shaft.
The operation of my invention is as follows:-
Assuming it is desired to remove the work (axle and wheels) from the lathe, the
fixed half of the spur wheel on the hollow carrier shaft being in the lower position,
the key pieces holding the upper and lower halves of said spur-wheel together are
knocked out and the upper half of the spur wheel is then removed; the bolts which
secure the loose ends of the standard bearing caps are slackened and the caps thrown
back on their hinges. The bolts are also removed from the flanges on the upper and
lower halves of the hollow carrier shaft the upper portion of which is then thrown
back on its hinges, thus enabling the work to be removed from the lathe. Fresh
work can now be inserted in the hollow carrier shaft, the reverse operation to that
above described being gone through to secure it in position.
T111 1
100
JOHN P. O'DONNELL,
Fel. Chart. Inst. P.A.,
70 & 71, Palace Chambers, S.W.,
Agent for the said Applicant.

page_text: I, HARRY CLAUDE BOCQUET, of "Llanwye," Hampton Park, in the Town and
County of Hereford, Gentleman, 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 has reference to an improved small wheel lathe which can be
adapted for any gauge of railway or tramway wheels to face tires up to say 4 feet
in diameter, and to turn and true up outside journals of axles.
The way in which I carry out my invention is as follows:-
On a bed plate having two ordinary fixed centre headstocks and a pair of com-
pound slide rests for the operating tools, I arrange two A shaped standards which
may be of cast iron; these A shaped standards have hinged bearing caps at the
top which support a hollow cast steel carrier shaft of such dimensions as to take
the largest diameter of small wheel axles in use, the bearings of the pulley shaft
for driving the lathe being also carried by said standards. The driving gear
consists of a worm-wheel mounted on the hollow carrier shaft hereinafter described,,
said worm-wheel being driven by a worm on the pulley shaft said pulley shaft being
at right angles to the axis of the lathe. The hellow carrier shaft is constructed
in two halves, horizontally, which may be called the upper and lower halves as the
said shaft must always be in this position when the work is inserted or disengaged.
The upper half is hinged to the lower half, one half of the above mentioned worm-
wheel being permanently fixed to the latter; the other or loose half of the said
worm wheel is held in position by a couple of steel wedges and key pieces. A cone
pulley is provided on the pulley shaft for the different speeds. Set screws are
provided at each end of the hollow carrier shaft for the purpose of holding the axle
and wheels to be operated upon firmly in said shaft.
In order that my invention may be better understood and more readily carried
into effect I will now describe it with reference to the accompanying drawings in
which:
Figure 1 is a front view, partly in section, of my improved wheel lathe, showing
an axle and pair of wheels in position to be operated on.
Figure 2 is a plan of the same, also partly in section.
Figure 3 is a cross sectional elevation on line A-B of Figures 1 and 2, showing
the pulley shaft and worm gear for driving the worm wheel.
Figure 4 is a part plan of the hollow carrier shaft showing one of its end hinges,
and Figure 5 is an end elevation of same.
Figure 6 is a side elevation of the worm-wheel on the hollow carrier shaft, the
lower part of said wheel being, as before mentioned, rigidly fastened to the carrier
shaft.
Figure 7 is an edge view of the spur-wheel on the hollow carrier shaft, the upper
portion of the figure being in section.
The same letters refer to the same parts in the several figures of the drawings.
a is the bed plate, preferably of cast iron, having two ordinary fixed centre head-
stocks bb¹: c c¹ are the two A shaped standards provided with the hinged bearing
caps
d d' e is the hollow split carrier shaft, the upper portion e¹ being hinged at f
(Fig. 2) is the divided worm wheel the lower portion gl of which is keyed to
the lower half of the hollow carrier shaft e, the upper half of said worm wheel
being connected to the lower and held in position by wedges h and keys h¹
(Figures 2, 6 and 7). j (Figures 2 and 3) is the pulley shaft and j¹ the worm
screw on same for driving the lathe: kare the bearings of the pulley shaft
supported by the A shaped standards e e¹; 7 (Fig. 3) is the cone pulley. mm² are
C

page_text: the ordinary compound slide rests for the operating tools. The upper and lower
portions of the hollow carrier shaft e are held firmly together by bolts n (Figures 1
and 5), bolts or set screws n¹ being also provided for holding the axle and wheels
to be operated upon firmly in the carrier shaft.
The operation of my invention is as follows:-
Assuming it is desired to remove the work (axle and wheels) from the lathe, the
fixed half of the worm-wheel on the hollow carrier shaft being in the lower
position, the key pieces h¹ (Fig. 6) holding the upper and lower halves of said
spur-wheel together are knocked out and the upper half of the spur wheel is then
removed: the bolts o which secure the loose ends of the standard bearing caps d d¹
are slackened and the caps thrown back on their hinges. The bolts n are also
removed from the flanges on the upper and lower halves of the hollow carrier
shaft e the upper portion e¹ of which is then thrown back on its hinges f, thus
enabling the work to be removed from the lathe. Fresh work can now be inserted
in the hollow carrier shaft, the reverse operation to that above described being
gone through to secure it in position. The set screws n¹ (Fig. 5) which are purely
for steadying the axle in the hollow carrier shaft may be dispensed with if desired,
as there are independent carriers ? (see Fig. 2) for driving the work.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed 1 declare that what I
claim is:-
In a wheel and axle lathe, the combination, with two standards provided with
bearings having removable caps, of a tubular carrier formed in halves and provided
with means for securing its halves together and to the axle, a worm wheel also
formed in halves and provided with means for securing its halves together and to
the said carrier, a driving shaft journalled under the worm wheel crosswise of the
carrier and provided with means for revolving it, and a worm secured on the said
shaft and gearing into the said worm wheel, substantially as herein described and
as illustrated in the drawings annexed.
Dated this 8th dox of November 1807
bor 1807
JOHN P. O'DONNELL,
Fel. Chart. Inst. P.A.,
Agent for the said Applicant.
70 & 71, Palace Chambers, Westminster.