Tramway and orner wheels.
Year: 1885

page_text: Tramway, and orner wheels.
I ROBERT HADFIELD of N° 168 Newhall Road, Attercliffe, Sheffield in the
County of York Steel Manufacturer do hereby declare the nature of my invention
for A NEW OR IMPROVED MACHINE FOR BORING AND FACING RAILWAY TRAMWAY
AND OTHER WHEELS to be as follows:-
This Invention has for its object a new or improved machine for boring and
facing railway tramway and other wheels which is constructed as follows.
I provide a strong bed planed perfectly true whereon I fix three heads one fast
and the other two loose-The loose heads are fitted with slides to enable them to
slide to and fro on the bed-Brackets are cast on all three heads-These brackets
carry a long shaft having a suuk key way, the length of which corresponds with
that of the travel of the loose heads-Such shaft serves to transmit power from the
fast to the loose heads-I obtain power in the fast head with a step cone and gear
wheels and I also gain power in the loose heads by toothed wheels-Each loose
head is carried on a strong spindle on which I securely fix a self centering or
universal chuck plate for securely holding the wheels perfectly true while being
bored Each spindle carries a spur wheel which engages with a pinion provided
with a feather key and having a to and fro travel on the long shaft when the
machine is in motion-An eccentric is mounted on one end of this long shaft-
This eccentric actuates a ratchet wheel which creates a feed motion and which is
thrown in and out of gear by a friction clutch-This ratchet wheel is mounted on
a screw shaft which traverses the loose heads in or out as required-Such screw
shaft is provided with a right and left hand thread and is fitted with two brass
nuts which take into recesses formed near the bottom of the loose heads close to
the bed-The screw shaft is either supported on short brackets fixed to the side of
the bed or it may be fixed in the centre of the bed itself and in order to gain power
so as to rapidly traverse the loose heads in or out a spur wheel is mounted thereon
Motion is imparted to such screw shaft by a short independent shaft on which I fix
three belt pulleys the middle one being fast and the other two loose-To these
pulleys I fix two belts one straight and one crossed worked by over head motion―
Such independent shaft is also provided with a pinion which engages with the spur.
wheel fixed on the traversing shaft The belts are guided on to the fast pulley

page_text: alternately so as to traverse the loose heads either in or out very rapidly-The machine
is worked by a hand wheel fixed in the centre-On the bed of the machine and
between the two loose heads a tool holder is fixed capable of holding four or more
boring bars The top part of this tool holder is made to revolve about one quarter
of a revolution which arrangement permits of two boring bars being always out of
use waiting to receive the sharp cutters which the operator is enabled to fix ready
for use while the others are working-When the cutters are dull the attendant
slackens a lock nut at the bottom of the tool holder and replaces the dull cutters
with sharp ones after which he refastens the lock nut-This arrangement enables
the machine to be kept constantly at work-The boring bars each have a hole
through the centre through which a stream of water is forced which is delivered on
to the cutter itself so that they are kept perfectly cold By this means I am enabled
to run the machine at a greatly increased speed and to take the roughing and
finishing cut both at the same time instead of only one at once as is now done.
Dated this 14th day of January 1885.
SHIRLEY BOWDEN,
33, Southampton Buildings, Holborn, London,
Agent for the Applicant.
A New or Improved Machine for Boring and Facing Railway,
Tramway, and other Wheels.
I, ROBERT HADFIELD of 33 Southampton Buildings, London 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:―
My Invention relates to a new and useful machine for boring and facing railway
tramway and other wheels and the objects of my invention are-First To bore
two railway, tramway or other wheels of any description simultaneously instead of
one only at a time as now practised. Second. To take both the roughing and
finishing cut at the same time instead of by two distinct operations as heretofore-
Third. To provide for the renewal of the cutters without stopping the machine, thus
keeping the machine constantly at work and Fourth. To provide for keeping the
cutters perfectly cold thus allowing of the machine being run at a high speed and
so turning out a great amount of work.
I attain these objects by the mechanism illustrated in the accompanying drawings
in which
Figure 1 is a plan view-Figure 2 is a front elevation-Figure 3 is an end
elevation and Figures 4 and 5 are detail views of one of the cutters Fig. 4 being

page_text: a plan view and Fig. 5 an edge view thereof-Similar figures of reference indicate
corresponding parts throughout the several views.
I provide a strong bed (1) planed perfectly true whereon I fix one fast head (2)
and two loose heads (3) (4)-These: loose heads are fitted with slides (5) to allow
of their sliding to and fro on the bed-Brackets (6) are cast on all three heads
These brackets carry a shaft (7) which transmits motion from the fast to the loose
heads This shaft has a sunken keyway (8) formed therein corresponding in length
with the length of travel of the loose heads-Each loose head is fitted with a strong
spindle (12) which carries a self centering or universal chuck plate (13)—These
chuck plates hold the wheels securely and perfectly true whilst being bored.
I obtain power in the fast head with a step cone (9) and gear wheels (10)-A lever
and fork (a) figs. 1 and 2 are fitted to the machine for sliding it from the slow gear
into the fast gear I obtain power in the loose heads by means of toothed gear
consisting of pinion and spur wheels (11) mounted on the spindles (12)—The
pinions are each provided with a feather key which slides backwards and forwards
in the before mentioned sunken key way on the shaft (7) when the machine is in
operation. An eccentric (18) is fitted to one end of the shaft (7)-This eccentric
actuates a ratchet wheel (19) which creates a feed motion and is thrown in or out
of gear by a friction clutch (20)-Such ratchet wheel is mounted on a screw
shaft (21) which traverses the loose heads in and out-This screw shaft has a right
and left hand thread formed thereon and is fitted with two brass nuts (22) which
nuts take into recesses (23) formed near the bottom of each loose head close to the
bed-The shaft is either supported on brackets fixed to the side of the bed or it
may be fixed in the centre of the bed itself A spur wheel (25) is mounted thereon
in order to gain power so as to traverse the loose heads in or out very quickly-
This enables me to withdraw the wheels from the boring bars very rapidly as in
my improved boring machine the articles to be bored move on to the cutters and
not the cutters on to the articles as now practised The boring bars and cutters are
fixed and are of a novel construction as presently described-Motion is imparted to
the screw shaft by a short independent shaft (28) mounted on suitable brackets (28)
fixed to the floor on which I fix three belt pulleys the centre one being fast and
the other two loose-To these pulleys I fix two belts one straight and one crossed
worked by over head motion-Such. independent shaft is also provided with a
pinion (34) which engages with the spur wheel (25) on the traversing shaft (21)—
The two belts are guided on to the fast pulley alternately so as to traverse the
loose heads either in or out very rapidly-This arrangement of pulleys and belts
is of an ordinary and well known nature and is not therefore illustrated in the
accompanying drawings.
The machine is worked by steam power and its operation is controlled by a hand
wheel (35) fixed on the centre thus giving the operator full command over the
machine when in motion.
A tool holder (36) capable of holding four or more boring bars (26) is fixed on
the bed of the machine between the two loose heads-The top of this holder is
made to revolve about one quarter of a revolution-This I effect by fitting the
bottom of the holder with two lock nuts (37) fitted into T headed bolts and cutting
T headed grooves in the base (38) so that by slackening either of the lock nuts a
quarter of a turn the holder can revolve centrally until arrested by stops (39) thus
bringing fresh cutters into position when by again tightening up the lock nuts the
holder is rigidly fixed.
The advantage of this arrangement is that two boring bars are always out of
use waiting to receive fresh sharp cutters (27) which the operator is able to fix
therein while the other two are working-thus allowing of the machine being kept
constantly at work.
Each boring bar is perforated centrally as shewn by dotted lines in Fig. 1 to
allow of water being forced through and delivered on to each cutter when at work
in a constant stream thus keeping the cutters perfectly cool and allowing the
machine to be run at a very high speed owing to which and also to the improved

page_text: shape of the cutters (as shewn at Figs. 4 and 5) I am able to take both the
roughing and finishing cuts at a single operation the front and smaller end of the
cutter being for the roughing cut and the larger end for the finishing cut.
The operation of the machine is as follows:-A pair of railway or other wheels
having been placed in the chuck plates fitted to the movable heads and the boring
bars fixed in the holder and fitted with cutters the machine is set in motion-The
movable heads then travel with the wheels to be bored and faced up and to each
boring bar the movable heads being actuated by the right and left hand thread
on the screw shaft and the operation is continued until the wheels are bored and
faced which occupies about 4th only of the time at present occupied.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The novel construction of boring and facing machine having its various
parts combined arranged and fitted substantially as hereinbefore specified.
2.Fitting such machine with self centering or universal chuck plates as and
for the purposes hereinbefore specified.
3. Fitting such machine with an adjustable multiple tool holder as and for the
purposes herein before specified.
4. Fitting such machine with fixed perforated boring bars as and for the purposes
herein before specified.
5. Fitting such machine with fixed cutters of the shape herein before described
and shewn as and for the purposes herein before specified.
Del T 1
1007
SHIRLEY BOWDEN,
33, Southampton Buildings, Holborn, London,
Agent for the Applicant.