A New or Improved Grinder and Dresser for Metal Rolls.
Year: 1895

page_text: Date of Application, 12th Mar., 1895-Accepted, 2nd Nov., 1895
COMPLETE SPECIFICATION.
A New or Improved Grinder and Dresser for Metal Rolls.
I, WILLIAM EDWIN HARRIS, of Niles, in the County of Trumbull, and State
of Ohio, one of the United States of America, Metal Worker 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 reference
being had to the accompanying drawings, forming part of this Specification, and to
the reference numbers marked thereon that is to say:-
This invention relates to a device for the grinding, dressing and polishing of
sheet mill and other metal rolls, without either removal from their housings, or
separation of said rolls out of drive friction touch with each other; thus in
grinding, dressing, and polishing, the one roll in each pair, (preferably the bottom
one) is alone driven direct from the engine, and the upper roll is indirectly driven
by its tension friction contact with the lower one, thus avoiding the delay and
labor incident to removals and rescating of said rolls, and their consequent
incidental separate seating and driving while dressing; and the invention consists
in features of novelty hereinafter fully described and pointed out in the claims.
Figure I is an elevated vertical section, taken on line 1-1, Figure 11, and shows
a sheet mill, with the rolls that are mounted in their housings, adjusted in friction
contact with each other, it also shows the adjustable rest bar, with an adjustable
block resting thereon, in which block are carried and groove seated dovetailed
emery dressing blocks, that simultaneously hold each other to their work on both
the upper and lower roll.
Figure 11 is a front view of the same.
Figure III is a vertical section of the intermediate emery block holder, as
shown in Figures I and II, and shows the dovetail emery blocks inserted therein,
in position for simultaneously dressing both the lower and upper roll; it also shows
the water tubes and chambers the contents of which prevent the heating of said
blocks.
Referring to the drawings:-
1 designates the lower bed-plates, that are provided with horizontal slots 2, in
which the inverted T-heads of the attachment bolts 3 are seated, the stems of
which bolts pass upwards through the bolt holes in the upper portions of said lower
bedplates 1, and through the secondary bed plates 4, where they receive screw nuts 5
to firmly secure said bedplates and their connecting base plates 6.
7 designates the vertical housing head plates, and 8 are apertures in the middle
of said head plates, in which are adjustably seated and held the sectional roll
bearing blocks 9.
10 designates the lower roll and 10" the upper roll. The journal bearings of said
upper roll are adjusted to cause a close friction contact of the periphery of said roll
with the periphery of the lower roll, which lower roll is driven by means of its
projecting drive arbor 10%, and its usual coupling connection thereby to the engine
drive shaft (not shown) or to the drive arbors of intervening rolls (when as is usual
a succession of said rolls in line have associate drives).
The lower roll or series of rolls are thus driven direct from the engine, and as
the periphery of said upper roll is brought into tight pressure friction contact with
that of the lower roll by means of the downward adjustment of the vertical set
screws 11, which work in screw seats in the convex heads 12 of the aforesaid
housing head plates 7, the feet of said set screws pressing against the follower
[Pain 2.3)

page_text: pressure beams 13, the said follower beams enforce a pressure drive on the aforesaid
sectional bearing blocks 9, so as to drive said bearing blocks closer together, and
thus to bring the respective journal bearings of the associate rolls closer together,
so as to adjust and enforce sufficient friction contact of the periphery of the lower
drive roll to the periphery of the upper roll, to ensure the rotation of the upper
roll from said friction contact without any direct drive from the engine to said
upper roll.
14 designates a rest bar, the slide bearer tenon ends of which, are adjustably
seated in the respective slotways 15 in the aforesaid head plates 7, and which rest
bar may be reversed from the one side of the rolls to the other, and seated in like
slots. Also the said rest bar with its coadjutant devices may be duplicated when
required on each side of the rolls.
16 designates integral lugs that project from the bottom of said rest bar, and
17 are adjusting set screws in said lugs to enforce the entrance of their ends in such
ones of the locking recesses 18 as rightly adjusts the elevation of said rest bar for
the support of my device for grinding, dressing and polishing the rolls, or at a
diverse elevation for resting the sheets or other material on their approach to and
departure from the rolls, in the course of rolling.
19 is a screw holder head block which rests and travels on said rest bar, said block
having an inverted T foot 20 fitted in a T slot in said rest bar.
21 is a set screw in said head block 19 for the adjustment hold of the roll dresser
block holder 22, the butt end of which rests on and is shifted on the aforesaid rest
bar 14.
23 designates the dual inclined concave presentation end of said block holder 22,
in which are inserted and held the upper and lower grinding and dresser dovetail
blocks 24, which are preferably made of emery, but may be of any other suitable
material. The dresser surface of said dovetail blocks present concave faces that
accord with the convex peripheries of the rolls they dress.
In the adjustment of the set screw 21 carc is taken not to force the roll dresser
block holder 22 too far forward, so as to separate the two rolls and thereby destroy
the contact friction between them that makes the driver bottom roll drive the upper
1oll. The said block holder, however, can be forced sufficiently forward by the set
screw to cause abundant attrition from its emery or other dresser blocks on the
rolls in course of dressing as the vertical set screws 11, that surmount, set and
control the journal bearings of the rolls and through said bearings the rolls
themselves can be set to enforce extreme contact friction tension between
said rolls.
25 desiguates a water chamber the dual branches 25ª from which come freely in
contact with the back of both the dresser blocks 24, and prevent the heating of
the same in the course of dressing the rolls. 26 is the supply water channel that
passes through the dresser block holder to said water chamber, and 27 is the drain-
channel that passes from said chamber to the point of discharge from said block
holder. 28 is an inlet junction tube, one end of which is inserted within said
supply water channel 26 and to the other end is secured the supply hose 29 by
means of the nut coupler 30. 31 is an outlet junction tube, one end of which is
inserted within said drain channel 27, and to the other end of said junction tube is
secured the drain hose 32 by means of the nut coupler 33.
It will be seen that in the above described device for holding the dresser blocks,
means are provided for grinding dressing and polishing the rolls without removal
from their mill housings, and thus the great expense of roll dressing lathes is
avoided, as is also the heavy labour and loss of time in the removal of the rolls
from and back to their mill housings.
It will also be seen that a single roll is alone driven direct from the engine and
drives its companion roll.
I have shown a single roll dresser holder to each pair of rolls, but I do not
confine myself to said single application of said dresser block holder, for it is
evident that a series of said dresser blocks with their holders may, by the means

page_text: above shown and described, be simultaneously used without any departure from the
essential features of my invention, as said plurality of use would, or will, simply
be a multiplication of said especial parts.
I do not confine myself to the use of any one material of which to construct
the grinding, dressing and polishing blocks, for emery, and also steel with sharp
file attrition cutter surfaces are well adapted for their construction yet also any
other suitable sharp, quick cutting material may be used and applied in accordance
with the general tenor of the invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In a device for dressing rolls while running in their housings, the combination
of the rolls, a block provided with concave grinding faces and a chamber through
which water is adapted to pass, and suitable means for holding the said device
against the faces of the rolls, substantially as and for the purpose set forth.
2. In a grinder and dresser for metal rolls while running in their housings, the
combination with a pair of rolls of a rest bar 14, adjustable in the slotways 15,
in said head blocks, the bearer lugs 16, the set screws 17, the roll dresser block
holder 22 and upper and lower dresser blocks in said holder substantially as
described.
3. In a grinder and dresser for metal rolls, the combination with a pair of rolls
of a rest bar 14 provided with an inverted T-slot, the bearer lugs 16, the set
screws 17, the setting holder block 19, having the inverted T-foot 20, the set
screws 21, the dresser block holder 22, having the double concave inclined
presentation end 23, and the dresser blocks that simultaneously dress both rolls
substantially as described.
4. In a grinder and dresser for rolls, the combination with a pair of rolls of a
rest bar 14 provided with the inverted T-slot, the bearer lugs 16, the set screws 17,
the setting holder block 19, having the inverted T-foot 20, the set screw 21, the
dresser block holder 22, having the double concave inclined presentation end, and
the dresser blocks in said holder, and the water chamber and supply in contact
with said dresser blocks, substantially as described.
5. In a grinder and dresser for metal rolls, the combination with a pair of rolls
of an adjustable rest bar 14, the adjustable screw set roll dresser holder block 22,
having the double inclined presentation, and the concave faced dresser blocks
bedded in said end the water chamber in said dresser blocks, the supply hose 29,
having the nut coupler 30, the junction tube 28, and water channel 26 that supply
said chamber the drain channel 27, the outlet junction tube 31, and the drain
hose 32 secured by the nut coupler 33 that drain said water chamber substantially
as described.
6. In a grinder and dresser for metal rolls the combination with a rest bar 14,
provided with the inverted T-slot the bearer lugs 16, and set screws 17, the setting
holder block 19, having the inverted T-foot 20 that travels in the said slot and set
screw 21, the dresser block holder 22, having the double concave inclined presenta-
tion end 23, provided with the dual housing dovetail slots, the water chamber 25
with its extension branches 25, and the upper and lower dovetail dresser blocks 19,
substantially as described.
Dated this 12th day of March 1895.
WHITE & WOODINGTON,
27 Southampton Buildings, London, Agents.