Improvements relating to the Drawing of Metals and to Apparatus therefor.
Year: 1888

page_text: The decision of the Chief Examiner, acting on behalf of the Comptroller, of the
12th day of September 1892, allowed, under Section 18 of the Patents, &c.
Date of Application, 9th Oct., 1887
Complete Specification Left, 9th July, 1889-Accepted, 10th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements relating to the Drawing of Metals and to Apparatus
therefor.
I, WILLIAM ALLEN MCCOOL of Beaver Falls in the County of Beaver and.State; of
Pennsylvania, United States of America, Machinist, do hereby declare the nature of
this invention to be as follows:-
My present invention relates to a method of and machinery for drawing metals.
Heretofore in drawing metals, especially where solid dies are employed, so far as I
am aware, the common practice, as well as the construction of the machinery, employed,
has necessitated a prior shaping of the leading end of the bar or like article mainly to
enable the same to be passed through the die to the grip, and secondarily to ensure the
hold of the grip on the article to be drawn.
The prior shaping of the bar is objectionable for two reasons: first on account of
loss of time and labor, and, second on account of loss of material, as the previously
prepared end of the article is so much waste stock or scrap.
To overcome said objections and disadvantages, is the object of the present invention,
and to this end it consists, first in the method of drawing the metal, and secondly in
means for carrying out the said method.
The method may be broadly stated to consist in applying the power to the bar
or like article to be operated on, first in front of the dio so as to enter the bar in the
die, and then back of the die, so as to draw the bar there-through.
The apparatus may be broadly stated to be one which combines two grips, an inter-
mediate dic, and power mechanism adapted to actuate either grip; and the equivalent
of the two grips may be generally stated as any grip-levice adapted to be used,
first to force the rod or like article into the die, and then draw the same through
the die.
There are other minor features of construction, all of which will hereinafter appear.
I will now proceed to describe my invention more specifically, so that others skilled
in the art to which it appertains may apply the same, and for that purpose, I will first
describe a machine adapted for the purpose and then the manner in which it, or its
equivalent, is to be operated to effect the desired result.
Upon a foundation, or bed-plate are erected housings for any suitable driving gear
such, for instance, as a band-wheel with a friction clutch, worm and worm-wheel,
and cog wheels or their equivalents, by means of which power can be applied to a
travelling grip or set of grips.
Extending therefrom are two side frames constituting an open box or tunnel forming
a track for the carriages of the travelling grips and a support or frame for the
die-block.
At one end of said tunnel or box on the shaft of the cog wheel or sprocket wheels,
and af, or near, the opposite end thereof is journalled a shaft having corresponding

page_text: sprocket wheels, while two parallel chain-belts connect the said sprocket wheels and are
the preferred means for transmitting power to the travelling grips.
The chain belts arranged within the tunnel may be supported at suitable intervals
by rollers so as to correct any sag thereof and relieve the power shaft, and tightening
shaft, of any unnecessary weight or strain; and the tightening shaft of sprocket wheels
may be journalled in sliding bearings, if desired.
The die-block is supported on the frames and preferably secured thereto near one
end thercof.
The die-block may be a solid or single casting, provided with flanges by which it
may be bolted to the frame, or it may be any other construction that circumstances
dictate. It has a central circular aperture for the die and two lateral apertures for the
passage of the draft-chains. The die may be of the tapering concentric solid ring
pattern, or any other approved form.
Mounted on track of frame, and movable therein or thereon, is a suitable grip truck
or carriage which, if desired, may be a single casting with journals or journal-bearings
for the wheels thereof, or may be built in sections and from any suitable material, if
preferred. This carriage has a central grip aperture having inclined or tapering sides
for the reception of the tapering sectional grip, and in order to preserve the proper
position of the grip sections in the holder, I prefer to employ keys and key-ways or
splines. The interior of the grip may be faced or provided with bushing, if
desired.
At the sides of the grip aperture, and usually in line therewith, are slots for the
passage of the draft chain belts, and intersecting said chain slots are pin slots for the
coupling pins by which the grip carriage may be connected with the draft chains or
equivalent source of power.
a
In order to carry out my method, two of the above described grips and grip
carriages, or their equivalents are desirable, one placed before and the other behind
the die and, as the power is applied by the first as a pushing force, and the second as
drawing force, the grips will be found to be more efficient and workmanlike in
construction if the structural differences are preserved, though it will be at once
apparent that the difference between the construction of right hand and left hand grip
is one of form and not of principle.
In order to actuate the grip a lever pivoted or having its fulcrum on the carriage is
provided with a pin which controls the sections of said grip to release or withdraw
said sections when the grip is to be shifted or loosened.
It will be noted that the form of grip described is one having an unobstructed axial
opening which will permit the free passage of a rod or bar of any length; this is a
Diaterial feature of the grip where very long rods, bars or the like, are to be drawn, as
it enables the grip to be shifted from time to time to renew its hold on the rods
near the die, and it also enables the rod to pass through the grip as readily as
through the die, and as continuously, which is a valuable feature in the first or
entering grip.
The devices having the features hereinbefore described are operated by me as
follows in carrying out my method.
We will suppose the pins withdrawn from both carriages or trucks, power applied
by means of the gearing to draft chains, and the said chains running free or without
operating the grip carriages.
The rod, bar, tube or other article to be drawn is passed through the grip of the first
or left hand carriage until its leading end projects therefrom a sufficient distance to
pass through the die when the said first carriage has moved up to the die, and the grip
of said carriage is then closed by means of the lever as before noted.
It is desirable that no excessive length of the leading end of the article should project
in order that there be no loss of power or tendency of the rod or bar to bend
where unsupported by the die and grip.
The pins are then inserted and the first or left hand carriage coupled to the power
chain which causes the carriage to advance and force the end of the article in to and
through the die.

page_text: The pins are then withdrawn.and the left hand, or first grip released, and the second
or right hand actuated by its lever to seize the rod, bar or other article on the opposite
side of the die after which the second or right hand grip carriage is coupled to the
power and the article drawn.in the usual way."
In case of long rods the unobstructed axial opening of the die and the arrangement
of the power mechanism permits the second or draft grip to be shifted from time to
time so as to renew its hold on the rod near the die whereby any continuous length
of rod may be drawn without interrupting the operation of the machine but
momentarily.
Further, the character of the grip is such that after the left hand or first grip has
performed its function as an entering grip it becomes a guide and therefore
is not inoperative or useless thereafter as many other forms of grip which might
be used, would be.
Dated this 9th day of October 1888
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents, for the Applicant.
COMPLETE SPECIFICATION (AMENDED).
Improvements relating to the Drawing of Metals and to Apparatus
therefor.
1, WILLIAM ALLEN MCCOOL, machinist, of Beaver Falls, Pennsylvania, United
States of America, 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 present invention relates to a method of and machinery for drawing metals.
In the drawing of metals, as heretofore practised, especially where solid dies are
employed, the common practice, as well as the construction of the machinery employed
has, so far as I am aware necessitated a prior shaping of the leading end of the bar or
like article mainly to enable the same to be passed through the die to the grip, and
secondarily, to ensure the hold of the grip on the article to be drawn.
The prior shaping of the bar is objectionable for two reasons: first, on account of loss
of time and labour, and second, on account of loss of material, as the previously
prepared end of the article is so much waste stock or scrap.
The object of the present invention is to overcome the said objections and disad-
vantages and to this end it consists first, in the method of drawing the metal, and
secondly, in means for carrying out the said method.
The improved method, may be broadly stated to consist in applying the power to the
bar or like article to be operated on first in front of the die so as to enter the bar in
the die, and then back of the die, so as to draw the bar therethrough.
The apparatus may be broadly stated to be one which combines two grips, an inter-
mediate die, and power mechanism adapted to actuate either grip; and the equivalent
of the two grips may be generally stated as any grip device adapted to be used
first to force the rod or like article into the die and then draw the same through
the die.
There are other minor features of construction, all of which will be hereinafter
described.
I will now proceed to describe my invention more specifically so that others skilled
in the art to which it appertains may apply the same, and for that purpose I will first
describe a machine adapted for the purpose and then the manner in which it, or its
equivalent, is to be operated to effect the desired result.
In the accompanying drawings
Figure 1 is a side elevation of a metal drawing machine adapted to carry out my
invention, and embodying certain mechanical features pertaining thereto.
Figure 2 is a plan view of said machine.

page_text: Figure 3 is a vertical central longitudinal section of the machine on the nine, & slig
of Figure 2.
Figure 4 is an enlarged plan view of a portion of the box or tunnel, track, draft
chains, sprocket wheel, grips and die, the grips and die being partly in section showing
the rod to be drawn, and the method of entering or introducing it into the die.
"
Figure 5 is an enlarged view of one of the grips and its carriage.
Figure 6 is a similar view of the die showing its attachment to the box or tunnel
and the slots for the passage of the draft chains.
Figure 7 is an enlarged detail view of one of the bearings of a sprocket wheel.
Figure 8 is a side view of the sectional grip block or bushing, and
Figure 9 is a front or end view of the sectional grip block looking in the direction
of the arrow Figure 8.
Like letters and figures of reference indicate similar parts wherever they occur.
Upon a foundation or bed plate A are erected housings for any suitable driving gear,
such, for instance, as a band wheel with friction clutch 1, worm and worm wheel c
and cog wheels de or their equivalents-by means of which power can be applied to
a travelling grip or set of grips.
Extending therefrom are two side frames B B constituting an open box or tunnel
forming a track D D for the carriages E E of the travelling grips, and a support or
frame for the die block C.
At one end of said tunnel or box, on the shaft of the cog wheel e are sprocket
wheels, and at or near the opposite end thereof is journalled a shaft g, having corre-
sponding sprocket wheels h, h, while two parallel chain belts k, k connect the said sprocket.
wheels and are the preferred means for transmitting power to the travelling grips.
The chain belts kk arranged within the tunnel may be supported at suitable intervals
by rollers so as to correct any sag thereof and relieve the power shaft and tightening
shaft g of any unnecessary weight or strain, and the tightening shaft (of sprocket
wheels may be journaled in sliding bearings in m (see Figure 7) if desired.
C indicates the die block supported on the frames B, B, and preferably secured
thereto near one end thereof as shown in Figure 1.
The preferred detailed construction of the die box and die are best un ierstood from
the enlarged view Figure 6 considered in connection with Figure 4.
The die block C may be a solid (or single) casting sufficiently wide to extend
fron B to B and provided with flanges by which it may be bolted to the frame
of it may be any other construction that circumstances dictate.
It has a central
circular aperture a for the die, and two lateral apertures o o for the passage of the draft
chains kk. The die 1 may be of the tapering concentric solid ring pattern, or any
other approved form.
Mounted on track D D of frame B and movable therein or thereon is a'snitable
grip truck or carriage E (see Figures 4 and 5) which if desired may be a single
casting with journals (or journal bearings) pp for the wheels w thereof or may be
built in sections and from any suitable material if preferred. This carriage has a
central grip aperture 2 having inclined or tapering sides for the reception of the
tapering sectional grip 4; and in order to preserve the proper position of the grip
sections in the holder (the truck) I prefer to employ keys and key-ways or splines
as indicated at s (Figures 4 and 5). The interior of the grip may be faced or provided
with bushing as at if desired.
At the sides of the grip aperture and usually in line therewith are slots t t
for the passage of the draft chain and belts kk and intersecting the said chain
slots are pin slots » v (see Figure 4) for the coupling pins V V (see Figure 5) by
which the grip carriage may be connected with the draft chains kk, or equivalent
source of power.
In order to carry out my method two of the above described grips or grip
carriages, or their equivalents are desirable, one placed before and the other behind
the die as shown in the drawings, and as the power is applied by the first as a
pushing force, and the second as a drawing force, the grips will be found to be
more efficient and workmanlike in construction if the structural differences shown

page_text: in Figure 4 are preserved; though it will be at once apparent that the difference
between the construction of right hand and left hand grip of Figure 4 is one of
form and not of principle.
In order to actuate the grip a lever (See Figure 3) pivoted or having its
fulcrum on the carriage as at 6, is provided with a pin 7 (as indicated in dotted line
Figure 5) which controls the sections of said grip 4 to release or withdraw said sections
when the grip is to be shifted or loosened.
It will be noted that the form of grip shown is one having an unobstructed axial
opening which will permit the free passage of a rod or bar of any length-this is a
material feature of the grip where very long rods, bars or the like, are to be drawn as
it enables the grip to be shifted from time to time to renew its hold on the rods
near the die, and it also enables the rod to pass through the grip as readily as
through the die and as continuously which is a valuable feature in the first or
entering grip.
The devices having the features hereinbefore described are operated as follows in
carrying out my method.
We will suppose the pins VV withdrawn from both carriages or tracks E E power
applied by means of the gearing to draft chains kk, and said chains running free-
or without operating the grip carriages.
The rod, bar, tube or other article to be drawn is passed through the grip of the
first (or left hand) carriage until its leading end projects therefrom a sufficient distance
to pass through the die when the said first carriage has moved up to the die, and the
grip of said carriage is then closed by means of the lever 5, as before noted.
It is desirable that no excessive length of the leading end of the article should project
in order that there be no loss of power or tendency of the rod or bar to bend where
unsupported by the die and grip.
The pins are then inserted and the first (or left hand) carriage coupled to the
power chain which causes the carriage to advance and force the end of the article into
and through the die.
The pins are then withdrawn and the left hand, or first grip released and the
second or right hand actuated by its lever 5 to seize the rod, bar or other article on the
opposite side of the die, after which the second, or right hand grip carriage is coupled
to the power and the article drawn in the usual way."
In case of long rods the unobstructed axial opening of the die and the arrange-
ment of the power mechanism permits the second or draft grip to be shifted from time
to time so as to renew its hold on the rod near the die whereby any continuous length
of rod may be drawn without interrupting the operation of the machine but
momentarily.
Further, the character of the grip is such that after the left hand or first grip
has performed its function as an entering grip it becomes a guide and therefore is
not inoperative or useless thereafter as many other forms of grip which might be
used would be.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I wish it understood that
I claim :-
First. The method herein described for drawing metals which consists in first forcing
the end of the article operated on in to and through the die, and then applying the
power on the opposite side of the die to complete the drawing of the article,
substantially as and for the purposes specified.
Second. The combination with a fixed drawing die, of a shifting grip mechanisin
adapted to first force, and then pull the article operated on, substantially as, and for
the purposes specified.
Third. The combination with two grips, of an interposed die, and mechanism for
actuating the grips, substantially as and for the purposes specified.
Fourth. The combination with a die, of a shifting grip having an unobstracted axial
pening throughout its length, substantially as and-for-the-purposes-specified.

page_text: Fifth Fourth. The combination with two grips, each of which has an unobstructed
axial opening throughout its length of an interposed die, substantially as and for the
purposes specified.
Sixth Fifth. In a metal drawing machine, the combination with a grip truck,
having a tapering annular orifice, or grip seat, of a tapering annular sectional grip,
substantially as and for the purposes specified.
Seventh Sixth. In a metal drawing machine; the combination with a grip truck
having a tapering grip seat of a tapering sectional grip, a grip lever, having a fulcrum
on the truck, and a pin for actuating the grip sections, substantially as and for the
purposes specified.
Dated this 9th day of July 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the. Applicant.

page_text: Date of Application, 9th Oct., 1888
Complete Specification Left, 9th July, 1889-Accepted, 10th Aug.,
1889
PROVISIONAL SPECIFICATION.
Improvements relating to the Drawing of Metals and to Apparatus
therefor.
I, WILLIAM ALLEN MCCOOL of Beaver Falls in the County of Beaver and State of
Pennsylvania, United States of America, Machinist, do hereby declare the nature of
this invention to be as follows:-
My present invention relates to a method of and machinery for drawing metals.
Heretofore in drawing metals, especially where solid dies are employed, so far as I
am aware, the common practice, as well as the construction of the machinery employed,
has necessitated a prior shaping of the leading end of the bar or like article mainly to
enable the same to be passed through the die to the grip, and secondarily to ensure the
hold of the grip on the article to be drawn.
The prior shaping of the bar is objectionable for two reasons: first on account of
loss of time and labor, and, second on account of loss of material, as the previously
prepared end of the article is so much waste stock or scrap.
To overcome said objections and disadvantages, is the object of the present invention,
and to this end it consists, first in the method of drawing the metal, and secondly in
means for carrying out the said method.
The method may be broadly stated to consist in applying the power to the bar
or like article to be operated on, first in front of the die so as to enter the bar in the
die, and then back of the die, so as to draw the bar there-through.
The apparatus may be broadly stated to be one which combines two grips, an inter-
mediato die, and power mechanism adapted to actuate either grip; and the equivalent
of the two grips may be generally stated as any grip-device adapted to be used,
first to force the rod or like article into the die, and then draw the same through
the die.
There are other minor features of construction, all of which will hereinafter appear.
I will now proceed to describe my invention more specifically, so that others skilled
in the art to which it appertains may apply the same, and for that purpose, I will first
describe a machine adapted for the purpose and then the manner in which it, or its
equivalent, is to be operated to effect the desired result.
Upon a foundation, or bed-plate are erected housings for any suitable driving gear
such, for instance, as a band-wheel with a friction clutch, worm and worm-wheel,
and cog wheels or their equivalents, by means of which power can be applied to a
travelling grip or set of grips.
Extending therefrom are two side frames constituting an open box or tunnel forming
a track for the carriages of the travelling grips and a support or frame for the
die-block.
At one end of said tunnel or box on the shaft of the cog wheel are sprocket wheels,
and at, or near, the opposite end thereof is journalled a shaft having corresponding
sprocket wheels, while two parallel chain-belts connect the said sprocket wheels and are
the preferred means for transmitting power to the travelling grips.
The chain belts arranged within the tunnel may be supported at suitable intervals
by rollers so as to correct any sag thereof and relieve the power shaft, and tightening
shaft, of any unnecessary weight or strain; and the tightening shaft of sprocket wheels
may be journalled in sliding bearings, if desired.
The die-block is supported on the frames and preferably secured thereto near one
end thereof.
The die-block may be a solid or single casting, provided with flanges by which it
may be bolted to the frame, or it may be any other construction that circumstances

page_text: dictate. It has a central circular aperture for the die and two lateral apertures for the
passage of the draft-chains. The die may be of the tapering concentric solid ring
pattern, or any other approved form.
Mounted on track of frame, and movable therein or thereon, is a suitable grip.truck
or carriage which, if desired. may be a single casting with journals or journal-bearings
for the wheels thereof, or may be built in sections and from any suitable material, if
preferred. This carriage has a central grip aperture having inclined or tapering sides
for the reception of the tapering sectional grip, and in order to preserve the proper
position of the grip sections in the holder, I prefer to employ keys and key-ways or
splines. The interior of the grip may be faced or provided with bushing, if
desired.
At the sides of the grip aperture, and usually in line therewith, are slots for the
passage of the draft chain belts, and intersecting said chain slots are pin slots for the
coupling pins by which the grip carriage may be connected with the draft chains or
equivalent source of power.
In order to carry out my method, two of the above described grips and grip
carriages, or their equivalents are desirable, one placed before and the other behind
the die; and, as the power is applied by the first as a pushing force, and the second as
a drawing force, the grips will be found to be more efficient and workmanlike in
construction if the structural differences are preserved, though it will be at once
apparent that the difference between the construction of right hand and left hand grip
is one of form and not of principle.
In order to actuate the grip a lever pivoted or having its fulcrum on the carriage is
provided with a pin which controls the sections of said grip to release or withdraw
said sections when the grip is to be shifted or loosened.
It will be noted that the form of grip described is one having an unobstructed axial
opening which will permit the free passage of a rod or bar of any length; this is a
material feature of the grip where very long rods, bars or the like, are to be drawn, as
it enables the grip to be shifted from time to time to renew its hold on the rods
near the die, and it also enables the rod to pass through the grip as readily as
through the die, and as continuously, which is a valuable feature in the first or
entering grip.
The devices having the features hereinbefore described are operated by me as
follows in carrying out my method.
We will suppose the pins withdrawn from both carriages or trucks, power applied
by means of the gearing to draft chains, and the said chains running free or without
operating the grip carriages.
The rod, bar, tube or other article to be drawn is passed through the grip of the first
or left hand carriage until its leading end projects therefrom a sufficient distance to
pass through the die when the said first carriage has moved up to the die, and the grip
of said carriage is then closed by means of the lever as before noted.
It is desirable that no excessive length of the leading end of the article should project
in order that there be no loss of power or tendency of the rod or bar to bend
where unsupported by the die and grip.
The pins are then inserted and the first or left hand carriage coupled to the power
chain which causes the carriage to advance and force the end of the article in to and
through the die.
The pins are then withdrawn and the left hand, or first grip released, and the second
or right hand actuated by its lever to seize the rod, bar or other article on the opposite
side of the die after which the second or right hand grip carriage is coupled to the
power and the article drawn in the usual way.
In case of long rods the unobstructed axial opening of the die and the arrangement
of the power mechanism permits the second or draft grip to be shifted from time to
time so as to renew its hold on the rod near the die whereby any continuous length
of rod may be drawn without interrupting the operation of the machine but
momentarily.

page_text: Further, the character of the grip is such that after the left hand or first grip has
performed its function as an entering grip it becomes a guide and therefore
is not inoperative or useless thereafter as many other forms of grip which might
be used, would be.
Dated this 9th day of October 1888.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to the Drawing of Metals and to Apparatus
therefor.
I, WILLIAM ALLEN MCCOOL, machinist, of Beaver Falls, Pennsylvania, United
States of America, 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 present invention relates to a method of and machinery for drawing metals.
In the drawing of metals, as heretofore practised, especially where solid dies are
employed, the common practice, as well as the construction of the machinery employed
has, so far as I am aware necessitated a prior shaping of the leading end of the bar or
like article mainly to enable the same to be passed through the die to the grip, and
secondarily, to ensure the hold of the grip on the article to be drawn.
The prior shaping of the bar is objectionable for two reasons: first, on account of loss
of times and labour, and second, on account of loss of material, as the previously
prepared end of the article is so much waste stock or scrap.
The object of the present invention is to overcome the said objections and disad-
vantanges and to this end it consists first, in the method of drawing the metal, and
secondly, in means for carrying out the said method.
The improved method, may be broadly stated to consist in applying the power to the
bar or like article to be operated on first in front of the dio so as to enter the bar in
the die, and then back of the die, so as to draw the bar therethrough.
..
The apparatus may be broadly stated to be one which combines two grips, an inter-
mediate die, and power mechanism adapted to actuate either grip; and the equivalent
of the two grips may be generally stated as any grip device adapted to be used
first to force the rod or like article into the die and then draw the same through
the die.
There are other minor features of construction, all of which will be hereinafter
described.
I will now proceed to describe my invention more specifically so that others skilled
in the art to which it appertains may apply the same, and for that purpose I will first
describe a machine adapted for the purpose and then the manner in which it, or its
equivalent, is to be operated to effect the desired result..
In the accompanying drawings
Figure 1 is a side elevation of a metal drawing machine adapted to carry out my
invention, and embodying certain mechanical features pertaining thereto.
Figure 2 is a plan view of said machine.
Figure 3 is a vertical central longitudinal section of the machine on the line x,'x,
of Figure 2.
Figure 4 is an enlarged plan view of a portion of the box or tunnel, track, draft
chains, sprocket wheel, grips and die, the grips and die being partly in section showing
the rod to be drawn, and the method of entering or introducing it into the die.
Figure 5 is an enlarged view of one of the grips and its carriage.
Figure 6 is a similar view of the die showing its attachment to the box or tunnel
and the slots for the passage of the draft chains.
`Figure 7 is an enlarged detail view of one of the bearings of a sprocket wheel.

page_text: +
Figure 8 is a side view of the sectional grip block or bushing, and
Figure 9 is a front or end view of the sectional grip block looking in the direction
of the arrow Figure 8.
Like letters and figures of reference indicate similar parts wherever they occur.
Upon a foundation or bed plate A are erected housings for any suitable driving gear,
such, for instance, as a band wheel with friction clutch 1, worm and worm wheel c
and cog wheels d e or their equivalents-by means of which power can be applied to
a travelling grip or set of grips.
Extending therefrom are two side frames B B constituting an open box or tunnel
forming a track D D for the carriages E E of the travelling grips, and a support or
frame for the die block C.
At one end of said tunnel or box, on the shaft of the cog wheel e are sprocket
wheels f, and at or near the opposite end thereof is journalled a shaft g, having corres-
ponding sprocket wheels h, h, while two parallel chain belts k, k connect the said sprocket
wheels and are the preferred means for transmitting power to the travelling grips.
The chain belts kk arranged within the tunnel may be supported at suitable intervals
by rollers so as to correct any sag thereof and relieve the power shaft and tightening
shaft g of any unnecessary weight or strain, and the tightening shaft g (of sprocket.
wheels hh) may be journalled in sliding bearings m m (see Figure 7) if desired.
C indicates the die block supported on the frames B, B, and preferably secured
thereto near one end thereof as shown in Figure 1.
The preferred detailed construction of the die box and die are best understood from
the enlarged view Figure 6 considered in. connection with Figure 4.
The die block C may be a solid (or single) casting sufficiently wide to extend
from B to B and provided with flanges by which it may be bolted to the frame
or it may be any other construction that circumstances dictate. It has 'a central
circular aperture n for the die, and two lateral apertures o o for the passage of the draft
chains kk. The die 1 may be of the tapering concentric solid ring pattern, or any
other approved form.
Mounted on track D D of frame B and movable therein or thereon is a suitable
grip truck or carriage E (See Figures 4 and 5) which if desired may be a single
casting with journals (or journal bearings) pp for the wheels w thereof or may be
built in sections and from any suitable material if preferred. This carriage has a
central grip aperture 2 having inclined or tapering sides for the reception of the
tapering sectional grip 4; and in order to preserve the proper position of the grip
sections in the holder (the truck) I prefer to employ keys and key-ways or splines
as indicated at s (Figures 4 and 5). The interior of the grip may be faced or provided
with bushing as at if desired.
At the sides of the grip aperture and usually in line therewith are slots tt
for the passage of the draft chain and belts kk and intersecting the said chain
slots are pin slots vv (see Figure 4) for the coupling pins V (see Figure 5) by
which the grip carriage may be connected with the draft chains kk, or equivalent
source of power.
In order to carry out my method two of the above described grips or grip
carriages, or their equivalents are desirable, one placed before and the other behind
the die as shown in the drawings, and as the power is applied by the first as a
pushing force, and the second as a drawing force, the grips will be found to be
more efficient and workmanlike in construction if the structural differences_shown
in Figure 4 are preserved, though it will be at once apparent that the difference
between the construction of right hand and left hand grip of Figure 4 is one of
form and not of principle.
In order to actuate the grip a lever 5 (See Figure 3) pivoted or having its
fulcrum on the carriage as at 6, is provided with a pin 7 (as indicated in dotted line
Figure 5) which controls the sections of said grip 4 to release or withdraw said sections
when the grip is to be shifted or loosened.
It will be noted that the form of grip shown is one having an unobstructed axial

page_text: opening which will permit the free passage of a rod or bar of any length-this is a
material feature of the grip where very long rods, bars or the like, are to be drawn as
it enables the grip to be shifted from time to time to renew its hold on the rods
near the die, and it also enables the rod to pass through the grip as readily as
through the die and as continuously which is. a valuable feature in the first or
entering grip.
The devices having the features hereinbefore described are operated as follows in
carrying out my method.
+
We will suppose the pins V V withdrawn from both carriages or tracks E E power
applied by means of the gearing to draft chains kk, and said chains running free-
or without operating the grip carriages.
The rod, bar, tube or other article to be drawn is passed through the grip of the
first (or left hand) carriage until its leading end projects therefrom a sufficient distance
to pass through the die when the said first carriage has moved up to the die, and the
grip of said carriage is then closed by means of the lever 5, as before noted.
It is desirable that no excessive length of the leading end of the article should project
in order that there be no loss of power or tendency of the rod or bar to bend where
unsupported by the die and grip.
The pins are then inserted and the first (or left hand) carriage coupled to the
power chain which causes the carriage to advance and force the end of the article into
and through the die.
The pins V are then withdrawn and the left hand, or first grip released and the
second or right hand actuated by its lever 5 to seize the rod, bar or other article on the
opposite side of the die, after which the second, or right hand grip carriage is coupled
to the power and the article drawn in the usual way.
In case of long rods the unobstructed axial opening of the die and the arrange-
ment of the power mechanism permits the second or draft grip to be shifted from time
to time so as to renew its hold on the rod near the die whereby any continuous length
of rod may be drawn without interrupting the operation of the machine but
momentarily.
Further, the character of the grip is such that after the left hand or first grip
has performed its function as an entering grip it becomes a guide and therefore is
not inoperative or useless thereafter as many other forms of grip which might be
used would be.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I wish it understood that
I claim :-
First. The method herein described for drawing metals which consists in first forcing
the end of the article operated on in to and through the die, and then applying the
power on the opposite side of the die to complete the drawing of the article,
substantially as and for the purposes specified.
Second. The combination with a fixed drawing die, of a shifting grip mechanism
adapted to first force, and then pull the article operated on, substantially as, and for
the purposes specified.
Third. The combination with two grips, of an interposed die, and mechanism for
actuating the grips, substantially as and for the purposes specified.
Fourth. The combination with a die, of a shifting grip having an unobstructed axial
opening throughout its length, substantially as and for the purposes specified.
Fifth. The combination with two grips, each of which has an unobstructed axial
opening throughout its length; of an interposed die, substantially as and for the
purposes specified.
Sixth. In a metal drawing machine, the combination with a grip truck, having a
tapering annular orifice, or grip seat, of a tapering annular sectional grip, substantially
as and for the purposes specified.

page_text: Seventh. In a metal drawing machine, the combination with a grip truck having a
tapering grip seat of a tapering sectional grip, a grip lever, having a fulcrum on
the truck, and a pin for actuating the grip sections, substantially as and for the
purposes specified."
Dated this 9th day of July 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.