Improvements in Gages for Flouring Rolls and the like.
Year: 1895

page_text: Date of Application, 9th Apr., 1895
Complete Specification Left, 9th Jan., 1896-Accepted, 4th Apr., 1836-
Improvements in Gages for Flouring Rolls and the like.
We, JOHN STEEL CAMERON and ADDISON WEEKS IGLEHEART of Evans-
ville in the County of Vanderburgh and State of Indiana, United States of
America, Millers, do hereby declare the nature of this invention to be as
follows:-
This invention is directed to devices for gaging the relative positions of the rolls
of roller mills to determine the degree of vertical adjustability requisite for paralleling
the same.
Heretofore in the art it has been proposed to employ a leveling plate for making
the test, the underside of the plate being straight and adapted to be placed on top
of a pair of rolls, and in the event of the latter being out of parallel, to rock
the plate to determine the degree of adjustability necessary to level the rolls. The
test with the leveling plate is however unsatisfactory and inaccurate owing to the
inability to predetermine from said test the exact degree of adjustment necessary,
and owing also to the fact that the plate test can be made only when the rolls are
at rest and when the housing is removed; and aside from this there always exists
n perceptible difference in the relative positions of the rolls when at rest as
compared with the periods of operation or activity.
The object of this invention is to entirely overcome and remove these
disadvantages, as our improved gage is susceptible of application to the rolls
whether the same are in motion or at rest, and in addition thereto the application
can be made with equal facility to the underside as well as to the top of the rolls,
thereby permitting a test when the latter are in their normal working position.
Aside from these advantages the time and labour expended in making a test is the
minimum, and no time of the machine need be lost, as the exact relative positions
of the rolls may in a very short space of time be determined by simply placing the
device in position and making the necessary adjustments, if any, of the same,
without stopping the machine or removing any of its parts.
It is always presumed when locating the roller mill that the inside rolls are level,
so that it is only necessary to adjust the outside roll in conformity with the inside
roll, or in other words the axis of the latter being fixed it is only necessary to
adjust the axle of the outside roll in parallelism therewith.
The invention is applied to a roller mill in which are two rolls, the inner one
having a fixed position, and the outer roll having means for adjustment relative
thereto. Our improvement is in two parts, one part being the gage and the other
the elevator. The gage consists of two rods preferably channelled out to reduce
the weight, and the upper and lower surfaces of same are ground perfectly true,
and are normally parallel with each other. Centrally thereof are depressions which
are formed for the purpose of clearing the scrapers which are employed in con-
nection with smooth rolls and which extend below the periphery of same.
Each of
the rods are bent or offset to permit of a connection with each other, which is
preferably made by means of a threaded bolt securely fixed to one of the rods and
passed through a slot in the other rod, a thumb nut serving in connection with the
pin to complete the connection. The rods are reduced at the end adjacent to the
connection to form indicators. In operation the thumb nut is loosened and by
means of the elevator presently to be described the gage is raised until the rods
contact say at four points on the peripheries of the rolls, and in the event of the
D

page_text: latter being out of parallelism, the rods are moved out of alignment with each
other, the degree being shown by indicators, which in turn determine the degree of
adjustability required for leveling the outside roll. As soon as the contact is made
with the rolls the thumb nut is tightened, and the record preserved until the next
test is made.
The device for elevating the gage consists of bar which in practice extends from
say a point outside of the casing of the mill to a point say centrally of the rolls,
and this bar has on its inner end a screw threaded standard, secured in position by
a nut and which carries a bridge bar adapted to be raised and lowered by means of
a thumb nut on the standard, a bow spring being interposed between the nut and
bridge to permit of a yielding contact of the bridge with the gage, which is made
by the ends of the bridge abutting against the under surface of the rods of the gage
centrally of their length. To prevent end wise movement of the bridge when in
position pins are inserted near each end thereof and which abut against the inner
sides of the gage.
The bar is firmly held in position by means of a clamp which secures the same
to the casing of the mill. This clamp consists of two jaws, the outer jaw being
secured to a collar through the opening of which the bar passes, and there is a
thumb out which, when tightened, bears against the bar and holds the jaw firmly.
This jaw is inclined inwardly to conform to the side of the casing, and when secured
by the thumb nut constitutes the fixed jaw. Extending upward from the collar is
an apertured lug through which is passed a thumb screw the head of which abuts
against the lug, and this screw is also passed through a threaded opening made in
the lug of a collar which carries the movable jaw. The jaw by means of the
thumb screw can be moved inward to clamp the casing or be outward to permit of
the disconnection of the bar. A toggle is also provided, one arm of which extends
in practice down on the inside of the roll frame, and its other arm extends to nearly
the inner end of the bar where it is connected to a collar on the bar having a
thumb nut to maintain its adjusted position on the bar. The arm is pivotally
secured to the movable jaw. In practice the exact position which the elevator is
to assume being determined by the adjustments of the collar and the jaw this collar
and jaw are firmly secured, when applying the same to the mill the jaw is moved
by turning the screw until a firm hold in the casing is made and the gage being
placed in position under the roller, the bridge is elevated by turning the nut as
previously described.
In some cases our invention may be applied as follows but modified in construc-
tion to facilitate the application thereof to the upperside or top as well as to the
underside of the rolls."
In this arrangement the rods which are constructed similarly to those just
described with the exception that the offset portions and indicators are made
separate and are adjustably connected thereto and an adjusting device is employed
as will be presently set forth. The rods are centrally apertured for connection
with a bridge bar having reduced screw-threaded ends for said apertures, nuts
being employed to complete the connection which is sufficiently free to permit the
rods to turn on said ends.
The
With this construction we prefer to use a handle which is arranged parallel with
the rods and connected centrally to the king bolt by a vertical post or arm.
connection of the handle with the gage being exactly central of the latter, it is
evident that the gage is very sensitive, and that the slightest variation from
parallelism of the rolls will be indicated, inasmuch as the movement or adjust-
ability of the two rods will be simultaneous, one being depressed and the other
raised until the contact is made at the four points.
In order to adapt the gage for application to the upperside as well as the under-
side of the rolls, we provide an indicator which is capable of being secured to the
rods in two positions, and which will show the degree of adjustment requisite for
paralleling the rolls. Said indicator consists of two arms which are bent inward
at one end, to span the ends of the rods, and bent outward at their other ends to

page_text: form indicator fingers which are arranged parallel to each other and extend in a
direction opposite to the bent ends.
In the ends of each of the rods to which the indicator is secured are
threaded perforations which are located respectively in the slide, end, and top
thereof, the side perforation receiving a thumb-screw which is first passed
through a slot in the hent end of one of the indicator arms, the connection of the
other arm being made with the other rod in a similar manner. This connection
forms a pivotal joint which enables the indicator to be turned and secured in
alignment with the rods, or at right angles thereto. Thumb screws are also
provided which are passed through perforations in the arms adjacent to the bent
ends, and screwed into the apertures to secure the indicator in alignment with the
rods, or into the apertures to secure the indicator at right angles to said rods. The
indicator fingers are loosely secured together by means of a bolt which is passed
through a slot in one of said fingers and screwed into an aperture in the other
finger, this connection permitting each finger to follow the movement of the rod to
which it is rigidly connected.
The connection of the indicator with the rods, which permits of their relative
position being changed, is for the purpose of enabling the operator to apply the
gage to the underside or to the upperside of the rolls, as couditions permit, or in
order to verify the indications.
The gage aside from this feature, may be applied to rolls when at rest, or in
motion, preferably at the latter time, as there is, as before stated always a
perceptible difference in the relative positions of the rolls when idle as compared
with the active periods.
In practising our invention, the indicator is secured in the position required for
the application, and the handle is brought against the periphery of the rolls, and
slight upward or downward pressure as the case may be, being given, the rods are
caused to adjust themselves to the positions of the rolls, the positions and con-
sequently the degree of adjustment required, being shown by the indicators. This
application of the gage may be made from above or below the ralls, it being
preferred to make the double test in order to prove the indication.
The gage is as a whole very simple but yet effective. It is durable, light of
weight, and may be cheaply produced and is very accurate in practice.
Dated this Eighth day of April 1895.
JOHN STEEL CAMERON,
ADDISON WEEKS IGLEHEART,
By W. Fairburn-Hart,
Agent.
Improvements in Gages for Flouring Rolls and the like.
We, JOHN STEEL CAMERON and ADDISON WEEKS IGLEHEART, of Evans-
ville, in the County of Vanderburgh and State of Indiana, United States of
America, Millers, 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 is directed to devices for gaging the relative positions of the rolls
of roller-mills to determine the degree of vertical adjustability requisite for
paralleling the same.
Heretofore in the art it has been proposed to employ a leveling plate for making
the test, the underside of the plate being straight and adapted to be placed on top
of a pair of rolls, and in the event of the latter being out of parallel, to rock the

page_text: plate to determine the degree of adjustability necessary to level the rolls. The
test with the leveling plate is however unsatisfactory and inaccurate owing to
the inability to predetermine from said test the exact degree of adjustment
necessary, and owing also to the fact that the plate test can be made only when the
rolls are at rest and when the housing is removed; and aside from this there
always exists a perceptible difference in the relative positions of the rolls when at
rest as compared with the periods of operation or activity.
The object of this invention is to entirely overcome and remove these
disadvantages, as our improved gage is susceptible of application to the rolls
whether the same are in motion or at rest, and in addition thereto the application
can be made with equal facility to the underside as well as to the top of the rolls,
thereby permitting a test when the latter are in their normal working position.
Aside from these advantages the time and labor expended in making a test is the
minimum, and no time of the machine need be lost, as the exact relative positions
of the rolls may in a very short space of time be determined by simply placing the
device in position and making the necessary adjustments, if any, of the same, without
stopping the machine or removing any of its parts.
It is always presumed when locating the roller mill that the inside rolls are level,
so that it is only necessary to adjust the outside roll in conformity with the inside
roll, or in other words the axis of the latter being fixed it is only necessary to
adjust the axle of the outside roll in parallelism therewith.
We will now describe the nature of our improved gage, and in connection with
the description attention is called to the accompanying drawing which forms a part
of this Specification, and in which
Figure 1 shows in sectional view enough of a roller mill with our improved device
applied, to illustrate our invention.
Figure 2 is a plan view of the gage rods.
Figure 3 is a horizontal section of the same.
Figure 4 is a side view of the device for adjusting the gage rods, and
Figure is an end view of the same.
Figure 6 is a plan view of the gage rods shoving a modified construction.
Figure 7 is an end elevation with a portion of the device in a different position.
Figure 8 is a view showing a pair of rolls with our improved gage applied to the
top thereof, and
Figure 9 is a similar view but showing the gage applied to the underside of the
rolls.
Like letters of reference denote like parts in the several figures of the drawing.
Referring first to Figures 1 to 5 inclusive, by letter, A denotes the roller mill
and B B are the rolls, the inner one B, having a fixed position, and the outer
roll B having means for adjustment, relative thereto which are not here shown.
Our improvement is in two parts as shown, one part being the gage and the
other the elevator. The gage consists of two rods e e' preferably channelled out
to reduce the weight, and the upper and lower surfaces of same are ground
perfectly true, and are normally parallel with each other. Centrally thereof are
depressions which are formed for the purpose of clearing the scrapers which
are employed in connection with smooth rolls and which extend below the
periphery of same. Each of the rods are bent or offset at e el to permit of a
connection with each other, which is preferably made by means of a threaded
bolt, securely fixed to one of the rods and passed through a slot g in the other
rod, a thumb nut serving in connection with the pin to complete the connection.
The rods are reduced at the end adjacent to the connection to form indicators h h'.
In operation the thumb nut is loosened and by means of the elevator presently to
be described the gage is raised until the rods contact at four points on the
peripheries of the rolls, and in the event of the latter being out of parallelism,
the reds are moved out of alignment with each other, the degree being
shown by the indicators, which in turn determine the degree of adjustability
required for leveling the outside roll. As soon as the contact is made with the

page_text: rolls the thumb nut is tightened, and the record preserved until the next test 13.
made.
The device for elevating the gage consists of a bar i which in practice extends
from a point outside of the casing of the mill to a point centrally of the rolls,
and this bar has on its inner end a screw threaded standard j, secured in position
by a nut j, and which carries a bridge bark adapted to be raised and lowered by
means of a thumb nut on the standard, a bow spring being interposed between
the nut and bridge to permit of a yielding contact of the bridge with the gage,
which is made by the ends of the bridge abutting against the under surface of
the rods of the gage centrally of their length. To prevent end wise movement of
the bridge when in position pins are inserted near each end thereof and which
abut against the inner sides of the gage as shown.
The bar is firmly held in position by means of a clamp which secures the same
to the casing of the mill. This clamp consists of two jaws m m', the outer jaw m
being secured to a collar m³ through the opening of which the bar passes, and m³ is
a thumb nut which, when tightened, bears against the bar and holds the jaw firmly...
This jaw is inclined inwardly as shown to conform to the side of the casing, and
when secured by the thumb nut constitutes the fixed jaw. Extending upward from
the collar m² is an apertured lug n through which is passed a thumb screw o, the
head of abutting against the lug, and this screw is also passed through a threaded
opening made in the lug n' of the collar m which carries the movable jaw m'. The
jaw m by means of the thumb screw can be moved inward to clamp the casing or
outward to permit of the disconnection of the bar. p is a toggle, one arm p² of
which extends in practice down on the inside of the roll frame and which may be iu
contact with the framework (see Fig. 1) to stiffen the bar i, and the other arm p³
extends to nearly the inner end of the bar where it is connected to a collar qon.
the bar having a thumb nut q¹ to maintain its adjusted position on the bar. The
arm p' is pivotally secured to the movable jaw m² as shown. In practice the exact
position which the elevator is to assume being determined by the adjustments of
the collar q and the jaw m this collar and jaw are firmly secured, when applying the
same to the mill the jaw m' is moved by turning the screw o until a firm hold in the
casing is made and the gage being placed in position under the roller, the bridge is
elevated by turning the nut as previously described.
In Figures 6 to 9 inclusive we have shown a gage embodying all of the essential
features of the gage just described, but modified in construction to facilitate the
application thereof to the upper side or top as well as to the underside of the rolls..
Referring now to these figures c c¹ denote the rods which are constructed similarly
to those just described with the exception that the offset portions and indicators are
made separate and are adjustably connected thereto, and a modified adjusting device
is employed as will be presently set forth. The rods are centrally apertured for
connection with a bridge bar having reduced screw-threaded ends for said
apertures, nuts being employed to complete the connection which is sufficiently
free to permit the rods to turn on said ends 12.
With this construction we prefer to use a handle which is arranged parallel with
the rods and connected centrally to the king bolt by a vertical post or arm . The
connection of the handle with the gage being exactly central of the latter, it is
evident that the gage is very sensitive, and that the slightest variation from
parallelism of the rolls will be indicated, inasmuch as the movements or adjustability
of the two rods will be simultaneous, one being depressed and the other raised until
the contact is made at the four points.
In order to adapt the gage for application to the upper side as well as the under-
side of the rolls, we provide an indicator which is capable of being secured to the
rods in two positions, and which will show the degree of adjustment requisite for
paralleling the rolls. Said indicator consists of two arms rr which are bent inward
at one end, r, to span the ends of the rods, and bent outward at their other ends
to form indicator fingers, which are arranged parallel to each other and extend
in a direction opposite to the bent ends. In the ends of each of the rods to.

page_text: which the indicator is secured are threaded perforations 8, 1, 83, which are located
respectively in the side, end, and top thereof, the side perforation receiving a
thumb-screw t which is first passed through a slot in the end of one of the
indicator arms, the connection of the other arm being made with the other rod in a
similar manner. This connection forms a pivotal joint which enables the indicator
to be turned and secured in alignment with the rods as shown in Figures 6 and 8, or
at right angles thereto as shown in Figures 7 and 9. are thumb screws which are
passed through perforations & in the arms adjacent to the bent ends r', and screwed
into the apertures s¹ to secure the indicator in alignment with the rods, or into the
apertures to secure the indicator at right angles to said rods. The indicator
fingers are loosely secured together by means of a bolt u which is passed through a
slot in one of said fingers and screwed into an aperture in the other finger, this
connection permitting each finger to follow the movement of the rod to which it is
rigidly connected. The connection of the indicator with the rods, which permits of
their relative position being changed, is for the purpose of enabling the operator to
apply the gage to the underside or to the upper side of the rolls, as conditions
permit, or in order to verify the indications.
The gage aside from this feature, may be applied to rolls when at rest, or in
motion, preferably at the latter time, as there is, as before stated-always a percep-
tible difference in the relative positions of the rolls when idle as compared with the
active periods.
In practising our invention, the indicator is secured in the position required for
the application, and the handle is brought against the periphery of the rolls, and
slight upward or downward pressure as the case may be, being given, the rods are
caused to adjust themselves to the positions of the rolls, the positions, and
consequently the degree of adjustment required, being shown by the indicators.
This application of the gage may be made from above or below the rolls, it being
preferred to make the double test in order to prove the indication.
The gage is as a whole very simple but yet effective. It is durable, light of
weight, and may be cheaply produced and is very accurate in practice.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. A gage for the rolls of roller mills consisting of two gage rods adapted
for contact at four points on said rolls, said rods being loosely connected together at
one end by a pivot parallel with the plane of the rods whereby the latter are
capable of vertical and relative adjustment, and an indicator on said rods.
2. A gage for the rolls of roller mills consisting of two gage rods adapted
for contact at four points on said rolls, a lateral screw threaded pin on one rod passed
through a vertical slot in the other rod whereby the rods are capable of vertical and
relative adjustment, and a thumb nut for said pin.
3. A gage for the rolls of roller mills consisting of two gage rods adapted
for contact at four points on said rolls, offsets in said rods loosely connected together
and indicators on said offsets.
4. A gage for the rolls of roller mills consisting of two gage rods adapted
for contact at four points on the rolls, each of said rods having an offset terminating
in an indicator, a threaded pin in one of the offsets passed through a slot in the
other offset and a thumb out for the pin.
5. In a combination, a gage for the rolls of roller mills consisting of gage rods
loosely connected together, and means for elevating said rods to form a contact at
four points on said rolls.
6. In con.bmation with two gage rods loosely connected together, of a device
for elevating said rods consisting of a bar adapted to be secured to a part of the
mill and carrying a bridge for supporting the rods and means for raising the
bridge.
7. In combination with two gage rods loosely connected together, of a device

page_text: for elevating said rods consisting of a bar having a clamp for securing the same in
position, a threaded standard carrying a bridge for supporting the rods, a nut on the
standards and a spring between the nut and bridge.
8. As a new article of manufacture, a gage and indicator for the rolls of roller
mills consisting of two connected members adapted for application to the under-
side of the rolls when in motion, said members being separated horizontally for a
portion of their length and means for permitting the relative adjustment of said
members.
9. A gage for the rolls of roller mills consisting of two rods loosely connected
together, and adapted for contact at four points on said rolls, and an indicator
adapted to be removably secured to said rods in different positions for the purpose
set forth.
10. A gage for the rolls of roller mills consisting of two rods centrally connected
but independently movable and adapted for contact at four points on said rolls, and
an indicator consisting of two arms each pivotally connected to one end of each arm
and adapted to be secured in different positions with reference to the rods, said
arms being loosely connected together, all as and for the purposes set forth.
11. A gage for the rolls of roller mills consisting of two rods connected together
centrally by a king bolt, but independently moveable, the indicator consisting of
the two arms having the bent portions and the indicator fingers, apertures in the
arms and ends of the rods, and thumb screws for securing said rods and indicators
in different relative positions, for the purpose set forth.
Dated the Eighth day of January 1896.
JOHN STEEL CAMERON,
ADDISON WEEKS IGLEHEART,
By W. Fairburn-Hart,
Agent.