Improvements in Machinery for Sawing Metals.
Year: 1886

page_text: Date of Application, 4th Dec., 1886
Complete Left, 5th Sept., 1887
Complete Accepted, 2nd Dec., 1887
Improvements in Machinery for Sawing Metals.
I, WILLIAM WILSON HULSE, of the Ordsal Works, Salford, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
These Improvements relate to Machinery for Sawing Metals in the cold state by
means either of Circular Saws or of Band saws-On the circular saw spindle or
Band saw shaft as the case may be is a toothed wheel gearing into a worm wheel
driven by a worm- With this arrangement the worm wheel may be made as large
as is requisite for obtaining great endurance and may nevertheless be kept wholly
below the surface of the Table which holds the work. For applying the cutting feed
the machine may be made either with a fixed table and traversing saw spindle or
vice versa When the saw is made to traverse, it, and such other parts of the machine
as it is required to traverse along with it, are mounted upon a traversing frame.
circular sawing with a traversing saw the worm is on the driving shaft of the machine
and does not traverse with the worm wheel, (which is carried by the traversing frame)
but is made of sufficient length to remain in gear with the worin wheel in all positions
of the latter. For Band sawing the worm is on a shaft carried by the traversing
frame and driven by the driving shaft of the machine through a pair of bevel wheels,
one of which slides on the driving shaft. When the table is made to traverse it is
formed by preference in two parts between which works the saw.
For
Either the worm or the worm wheel may work partially immersed in oil contained
in a trough provided for the purpose. Lock nuts or tail pins may be employed
for receiving the end thrust of the worm. In order to distribute the wear
of the worm wheel teeth, arising from the action of the worm in an approximately
uniform manner along their breadth, a reciprocatory movement at right angles
to the axis of the worm may be imparted by suitable mechinism either to the
worm or to the worm wheel. For driving a circular saw the end of of the
spindle which receives it may be formed with teeth taking into a hole (with corre-
sponding teeth) in the centre of the saw and the saw may be secured on the spindle
by set screws, (preferably hollow) recessed into the saw and taking into a collar on
the spindle, the set screws, by preference, fitting slack in the saw. This method of

page_text: fixing the saw allows its face to be kept flush all over, and thus affords advantages
in sawing off the dead heads of steel castings and in other cases. The driving shaft
of the machine may be situated below the surface of the ground, and be extended to
any distance from the machine which may be necessary for so placing the driving
pullies that the driving strap will not interfere with the work put upon the table to
he operated on. In some cases when sawing with a traversing Band saw the traversing
frame may be in 2 parts both traversed simultaneously by suitable mechanism.
One of the parts carries the upper Band saw pulley, and the other the lower pulley
and the driving gear. In every case suitable mechanism is employed for effecting
the cutting feed traverse automatically; change wheels being introduced to enable
the rate of the traverse to be varied as occasion requires.
Dated the Third day of December 1886.

page_text: 13.
I WILLIAM WILSON HULSE of the Ordsal Works Salford in the County of
Lancaster Engineer, do hereby declare the nature of this invention and in what
imanner the saine is to be performed, to be particularly described and ascertained in
and by the following statement and the accompanying drawings:-
a worm-
These improvements relate to Machinery for sawing Metals in the cold state by
means either of circular saws or of Band saws--On the circular Saw Spindle or Band
Saw Shaft as the case may be is a toothed wheel gearing into a worm wheel driven by
With this arrangement the worm wheel may be made as large as is requisite
for obtaining great endurance and may nevertheless be kept wholly below the surface
of the Table which holds the work. For applying the cutting feed. The machine
may be made either with a fixed Table and traversing Saw Spindle or vice versa-
When the Saw is made to traverse it and such other parts of the Machine as it is
required to traverse along with it are mounted upon a traversing frame.-For Circular
Sawing with a traversing Saw the worm is on the driving Shaft of the Machine
and does not traverse with the worm wheel (which is carried by the traversing frame)
but is made of sufficient length to remain in gear with the worm wheel in all positions
of the latter. For Band Sawing the worm is on a shaft carried by the traversing frame
and driven by the driving shaft of the Machine through a pair of bevel wheels, one
of which slides on the driving shaft. When the table is made to traverse it is formed
by preference in two parts between which works the saw.
Either the worm or the worm wheel may work partially immersed in oil contained
in a trough provided for the purpose-Lock nuts or tail pins may be employed for
receiving the end thrust of the worm. In order to distribute the wear of the worm
wheel teeth arising from the action of the worm in an approximately uniform manner
along their breadth, a reciprocating movement at right angles to the axis of the
worm may be imparted by suitable mechanism either to the worm or to the worm
wheel. For driving a Circular Saw the end of the spindle which receives it may be
formed with teeth taking into a hole (with corresponding teeth) in the centre of the
saw and the Saw may be secured on the spindle by set screws, (preferably hollow)
recessed into the saw and taking into a Collar on the spindle, the set screws, by
preference fitting slack in the Saw-This method of fixing the saw allows its face
to be kept flush all over, and thus affords advantages in sawing off the dead heads
of steel castings and in other cases. The driving shaft of the Machine may be
situated below the surface of the ground and be extended to any distance from the
machine which may be necessary for so placing the driving pullies that the driving
strap will not interfere with the work put upon the table to be operated on-In some
cases when sawing with a traversing Band Saw the traversing frame may be in
2 parts both traversed simultaneously by suitable mechanism.
One of the parts carries the Upper Band Saw pulley and the other the lower
pulley and the driving gear. In every case suitable mechanism is employed for
effecting the cutting feed traverse automatically change wheels being introduced to
enable the rate of the traverse to be varied as occasion requires.

page_text: In the accompanying drawings, Fig. A is an end elevation and Fig. B a side
elevation of a Circular Sawing Machine with traversing Saw constructed in accordance
with the present improvements. 1 is the bed of the machine-2 the Circular Saw
mounted upon a spindle carried by the traversing frame 3, moveable along guides on
the bed of the machine as shewn and bearing solidly upon it. 3 is the table on which
the work is secured. 4 is the driving shaft carrying the drividg pulley 5 and long
worm 6 which is partially immersed in an oil trough 7.
The end thrust of the worm is sustained by the lock nuts 8 (as shown on an enlarged
scale in Fig. D) and these and other lock nuts 9 enable wear and end play to be taken
up. An alternative method in which the end thrust is sustained by a tail pin 30 is
shown in the enlarged view Fig. C. 10 is the worm wheel (mounted on the traversing
frame) which is driven by the worm 6; it is of large size so as to have great enduranco
against wear, and this endurance may be still further increased by a reciprocatory
sideways motion being imparted to it so as to cause the wear due to the action of the
worm, to be distributed over the whole of the width of the teeth-The method of
imparting this reciprocatory sideways movement to the worm wheel is shown in the
enlarged view Fig. G-In this view 11 is a socket on the traversing frame 3, into
which the boss 12 of the worm wheel 10 enters; in the boss 12, is cut a cam like
groove 13 which receives the points of two set screws 14-14 secured in the wall of
the socket 11-When the worm wheel 10 is rotated, the sides of the cam like groove 13
act upon the points of the set screws 14-14 so as to cause the worm wheel to move
to and fro sideways together with the shaft 15 which carries it-Sometimes the
distribution of the wear of the worm wheel teeth may be effected by imparting side-
ways movement to the worm instead of the worm wheel-The worm is made of such
length that the worm wheel will remain in gear with it in all positions of the traversing
frame 3 The worm wheel gears into a wheel 16 (having corresponding teeth) keyed
upon the saw spindle 17, and it will be seen that notwithstanding the large size of
the worm wheel it does not, with this arrangement of gearing, project upwards above
the top of the table 36 on which the work is secured-The traversing of the frame 3
is effected automatically at a slow speed through the cone pulley 18 on shaft 4, cone
pulley 19 on shaft 20, worm 21 on the same shaft, worm wheel 22 on shaft 23,
worm 24 on the same shaft, and worm wheel 25 on the traversing screw 26, which
takes into a nut on the traversing frame-For traversing the frame at a quicker
speed rotation is transmitted from the shaft 20 to the traversing screw 26 through the
spur wheels 27, 28, 29 instead of through the worm and worm wheel gearing
previously described-A clutch is provided, as shown, between the worm wheel 25
and spur wheel 29 on the traversing screw, by means of which either one or the
other is put in gear with the traversing screw, according as the slower or quicker
rate of traverse is required.
Figs. E and F are enlarged views showing the improved method of attaching a
circular saw to its spindle so as to keep the face of the saw flush all over-The end of
the saw spindle 31 is formed with teeth as shown in Fig. E and with a collar 32 as
shown in Fig. F. The teeth on the spindle enter a hole of corresponding shape in
the saw 33, and the saw is secured to the collar 32 by means of set screws (having
square holes through them as shown) which screw into the said collar and whose
heads take into corresponding recesses in the saw, and grip it to the spindle. In
order to guard against injury resulting from the unequal expansion of the saw and
of the collar 32 when the saw is at work, the holes in the saw for the setscrews
may be made rather larger than the setscrews-The driving power is thus transmitted
to the saw partly through the teeth on the end of the spindle acting upon the sides
of the correspondingly formed hole in the saw, and partly through the frictional
grip produced by the set screws between the saw and the collar-It will be seen that
the driving shaft is situated below the ground level, and it may be extended to any
length requisite for enabling the driving belt to be situated far enough away from
the machine to allow as much free space about the latter as may be required for the
convenient manipulation of work of the largest size.
Fig. H is an end view of a Band Sawing Machine with traversing table, constructed

page_text: according to the present improvements-In this figure the same numbers are
employed as in Figs. A. B. for denoting corresponding parts in the two machines
except that the table in Fig. H which is made in two separate parts (instead of being
as in Figs. A, B) is denoted by numbers 34, 34¹--The band saw (which in this case
does not traverse) works, as shown, between the two parts of the table, each of
which is provided with a traversing screw 35, 35, and the two screws being coupled
by a cross shaft and bevel wheels as shown. 18 is the pulley from which the cross
shaft is driven through intermediate mechanism (provided with change wheels) which
is not shown in Fig. H-In this machine the worm 6 works on top of the worm
wheel 10, and it is the latter which is partially immersed in the oil trough 7.
35 is
the lower pulley of the band saw, and it is keyed on the same spindle as the toothed
wheel 16, which is in gear with the worm wheel 10.
Fig. K is an end view of a Band Sawing Machine with fixed table, constructed
in accordance with the present improvements, and the same system of numbers is
employed for designating the parts in this Figure as is described above for Fig. H.
In this machine the band saw is mounted on three pulleys carried by the frame 3,
which traverses along the bed 1 in guides as shown. The third or intermediate pulley
diverts the course of the band saw so as to keep it clear of large work-The worm 6
instead of being upon the driving shaft, is secured on a cross shaft 37 (carried by
the traversing frame 3) which is rotated by the driving shaft 4 through the bevel
wheels 38, 39, of which 38 slides along the driving shaft when the frame is traversing.
Change wheels driven from shaft 4 as shown are employed for rotating the screw 26
which traverses the frame 3. In the arrangements shown in Figs. H, K, the worm
wheel 10 does not travel along the worm 6 as in that shewn in Figs. A and B, and
the worms therefore are not required to be of unusual length.
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. In a Circular sawing machine for sawing metals the combination of a worm 6,
worm wheel 10, toothed wheel 16 and of the shafts which carry them, and with or
without an oil trough 7 all substantially as shewn in Figs. A. B. C. and described.
2. The general arrangement of a Circular sawing machine for sawing metals
substantially as shown in Figs. A, B, D, and described.
3. The method for mounting and securing circular saws for sawing metals upon
their spindles substantially as shown in Figs. E F and described.
4. In a Band sawing machine for sawing metals the combination of a worm 6,
worm wheel 10, toothed wheel 16 and of the shafts which carry them and with or
without an oil trough 7, all substantially as shown both in Fig. H, and in Fig. K,
and described.
5. In a Band sawing machine for sawing metals the combination of a traversing
frame 3 carrying the band saw, and of a fixed table for supporting the work
substantially as shown in Fig. K, and described.
6. The general arrangement of a Band sawing machine for sawing metals
substantially as shown in Fig. H, and described.
7. The general arrangement of a Band sawing machine for sawing metals
substantially as shown in Fig. K and described.
Dated this 3rd day of September 1887.
H. C. CARNS,
Agent.