Improvements in Machines for Rolling Cylindrical Forms of Metal.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Rolling Cylindrical Forms of Metal.
I, ALEXANDER MELVILLE CLARK of the firm of A. M. and Wm. Clark of 53
Chancery Lane in the County of Middlesex Fellow of the Institute of Patent
Agents, do hereby declare the nature of this invention (a communication to me from
abroad by George Hewlett Clowes, Manufacturer, of Waterbury, in the County of
New Haven, and State of Connecticut, and Edward Fitz-Randolph, Manufacturer, of
New York, in the County and State of New York, both in the United States of America)
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This Invention relates to improvements in machines for rolling cylindrical forms
of metal, and has for its object to provide a new, novel, and practical manner of
housing two pairs of rolls within one frame or head for the purpose of rolling
cylindrical forms of metal either solid or hollow, in order to reduce the size or thick-
ness of the same, either through the entire length or at any point section or portion
between the two ends, or to figure, neck, flange, form joints, point, or cut, the same.
A further object of the invention is to so arrange the reducing or forming rolls, that
the work and the rolls may with case and facility be adjusted to each other, or the
work readily taken from the rolls at any point or stage in the operation of rolling. The
invention consists in the novel construction and combination of the several parts, as
will be hereinafter fully set forth and pointed out in the claims.
Reference is to bo had to the accompanying drawings, forming part of this
specification, in which
Figure 1 is a side elevation, and figuro 2 a plan view, of the machine.
Figure 3 is a transverse section, taken practically on line
figure 2, illustrating
the bed frame in elevation, and also one section of tho housing, and a portion of its
frame.
Figure 4 is a horizontal section, on line y-y Figure 3;
Figure 5 is a front end elevation; and
Figure 6 is a section on line - Figure 2, the mandrel being removed.
Similar letters and figures of reference indicate corresponding parts in all the
views.
The bed frame of the machine consists of two side pieces 10, end pieces 11, and
legs 12, supporting the same. The side pieces are recessed upon their inner faces
at the top, and guide strips 13, are bolted thereon to form a slide-way in which a
table 14, has lateral movement, as shown in Figures 3 and 6. The table extends
virtually from end to end of the bed frame, and near each extremity, upon its under
face a lug 15, is formed, to which lugs the ends of a cable 16, are secured, the said
cable being carried over a drum 17, located between the side pieces at or near the
center of the bed frame.
At the point where the drum is located a bracket 18, is bolted to the side
pieces 10. These brackets are usually provided with braces 18, and upon the outer
face of each bracket a hanger 19, is fastened, in which a shaft 20, carrying the
drum, is journaled. The drum shaft is provided at one outer end with a worm
wheel 21, meshing with a worm 22, the worm shaft being journaled beneath the
worm wheel and provided at its forward end, which extends beyond the bed, with a
bevel pinion 23. The connection of the worm shaft with the drive shaft will be
hereinafter described.
Upon the horizontal members of the brackets 18, uprights 24, are securely bolted,
and connected together by a cap plate 25; and the said uprights are prevented from
spreading by introducing at the top and bottom a horizontal binder 26, consisting of
a flat bar having upset ends, which ends contact with the outer surface of the
uprights, as best shown in Figures 1 and 3.

page_text: Within the frame thus formed are located the roll housings 27, constructed in two
sections, A and A' forming one and A2 and A³, the other section. Each section
consists practically of a rectangular block of metal snugly fitting between the top and
bottom of the frame in which they are located and capable of lateral adjustment
therein, each of which blocks has a central cavity 28, produced in its inner longi-
tudinal edge, as shown in Figure 3, and upon the front and rear face of each of
the sections an essentially triangular boss 29 is formed, for the purpose of extending the
length of the bearings for the journals without enlarging the whole area of the
housings.
In the upper portion of each set of housings, an arbor 30, is journaled, and
another arbor 31, is journaled near the lower end, both of which pass through the
bosses 29. Each upper and lower arbor of each pair of housing sections, is provided
with a fast pinion, designated respectively as 32 and 33, the said pinions occupying
the recess provided for them in their respective sections, viz.: A¹ and A³, as is best
illustrated in Figure 3, and upon the rear outer extremity of each arbor 30, a
reducing or shaping roll 34, of any suitable pattern is securely fastoned.
It will thus be observed that by reason of the location of the arbors 30, two
horizontally-aligning rolls are located in the upper portion of each housing, and two
similarly aligning rolls in the bottom of each housing, which rolls extend over the
concavity 28.
The inner edges of the opposed housing sections contain adjusting screws 35.
Tie bolts 36, are employed to connect the housing sections, A to A¹ and A³ to A³,
respectively, and the forward section of each housing has swiveled in its outer edge
two stay bolts 37, ono near the top and the other near the bottom, which stay bolts
pass through the uprights 24, and are provided upon their outer extremities with an
adjusting nut 38. The said bolts effectually prevent the canting of the sections when
the rolls 34 are pressing upon the tubo to be reduced or figured. The fine adjustment
of each section is accomplished by manipulating the screws 35.
The adjustment of the rolls in their respective housings is accomplished by the
following means.
The inner end of screws 39, is swiveled in the outer edges of said sections at top
and bottom, which screws pass through threaded bushings 40, introduced into the
uprights of the housing frame; and upon the outer extremity of cach adjusting screw 39,
a worm wheel 403, is secured, meshing with worms 41, upon perpendicular shafts 42,
one of which shafts is journaled upon cach upright of the housing frame. Each
shaft 42, near its upper end, is provided with a bevel pinion 43, and one or both of
said shafts with a hand wheel 44; and the two shafts 42 are connected by a
horizontal shaft 45, journaled upon the cap plate 25, the said horizontal shaft being
provided with a bevel pinion, 46, at each extremity meshing with the pinions 43, as
shown in Figure 2.
This means of adjusting could, however, be changed without departing from the spirit
of the invention, as for instance, a means may be provided whereby each of the said
sections may be adjusted separately or together as required..
Between the arbors 30 of each pair of housing sections, the rear end of a line
shaft 47, is journaled, the two shafts being carried to the forward end of the machine
in parallel lines, as shown in Figure 2, and each shaft is provided with an attached
pinion 48, which by meshing with the pinions 32 and 33 of the arbors 30 and 31, com-
municates a rotary motion to the rolls.
The journal boxes 49, of the forward ends of the line shafts 47 are pivoted, in order
that the rear ends of said shafts may readily conform to the necessary adjustment of
the housing sections. This is usually effected by bolting transversely to the bed
frame a vertical bracket or hanger 50, and forming upon one face of said hanger at
each side a tubular pillar or socket 51, as shown in Figures 1 and 5; and upon
the under face of each journal box 49, a pin 51ª is secured, one of which pins is
inserted in each socket 51, and prevented from having vertical movement by
screwing upon the lower end of each pin a nut 52, or equivalent device, which
contacts with the bottom of the socket.

page_text: Upon the forward end of each shaft 47, a spur wheel 53, is keyed or otherwise
secured, driven by a pinion 54, fast upon the main drive shaft 55, the rear end of said
drive shaft being journaled in the hanger 50 at or near the center thereof. The drive
shaft is provided with two loosely mounted bevel pinions 56 and 57, meshing with a
larger pinion 58, upon one extremity of a horizontal shaft 59, and between the
pinions 56 and 57 a clutch 60, is held to slide on and turn with the drive shaft,
and it is provided at each end with a lug 61; the loosely mounted bevel pinions
are likewise provided with a lug 62, capable of contacting with the lugs of the
clutch.
The horizontal shaft 59 is geared to the vertical shaft 63, which drives the lower
worm shaft 22, by means of a bevel pinion 64, secured to its lower end and meshing
with the pinion 23 of the lower worin shaft 22, as shown in Figures 1 and 2. Thus
by moving the clutch to contact with either one of the bevel pinions 56 or 57, the
table 14 may be made to carry the work either forward or backward.
A tail stock 65, of any approved construction, is secured to the table 14 at or near
its inner end, and at or near the forward end of the table a head stock 66, is bolted.
This latter stock is of peculiar construction, for facilitating the putting in and taking
out of the mandrels, as shown in Figures 2 and 6, and consists of a body section B, of
any desired shape, provided with a forked upper end B', the members whereof are
transversely slotted, and within the slot of one member a retaining bar B², is pivoted,
the other end of which, provided with a handle B³, is adapted to enter the slot of the
opposite member, and is held in a locked position therein, usually, by passing a pin B*,
through said member and the free end of said bar.
The centers of the stocks are adapted for contact with each end of a mandrel 67,
which mandrel passes between the pairs of housing sections, and is adapted to carry
the tube 68, to be manipulated, the said tube being brought in contact with the rolls,
as best shown in Figure 2.
When it is necessary to remove a tube and mandrel, the center of the head stock is
screwed forward from contact with the mandrel, the pin B is withdrawn from said
stock and the retaining bar thrown upward, exposing the space between the members
of the forked end of the stock, whereby the said tube and mandrel may be readily
drawn forward to clear the housing.
It is to be distinctly understood that while especial details of construction have
been shown and described, I do not confine myself thereto, as other equivalent con-
struction may be employed without departing from the spirit 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 machine for rolling cylindrical forms of metal, two pairs of rolls housed
within the frame, capable of acting in unison or independently of each other, substantially
as shown and described.
2. In a machine for rolling cylindrical forms of metal, two pairs of housed rolls,
and mechanism, substantially as described, for adjusting each pair of rolls, as and for
the purpose specified.
3. The combination, with adjustable housings, of two pairs of reducing or
shaping rolls independently journaled in said housings, substantially as shown and
described.
4. The combination, with adjustable housings having a concavity in their inner
edges, of two pairs of reducing or shaping rolls independently journaled in the
housings, and grouped about the opening formed by the said concavities, substantially
as shown and described.
5. The combination, with a frame, and housings held to slide in said frame having
registering concavities in their inner edges, of reducing or shaping rolls inde-
pendently journaled in the housings and grouped about the opening formed by the said
concavities, and means, substantially as described, for adjusting the housings to and
from each other, as specified.

page_text: 6. The combination, with a frame, and housings held to slide in said frame having
registering concavities in their inner edges, of reducing or shaping rolls inde-
pendently journaled in the housings and grouped about the opening formed by the said
concavities, drive shafts journaled in said housings and geared to the arbors of the rolls,
and boxes journaling one end of said shafts, which boxes are pivotally supported,
substantially as and for the purpose specified.
7. The combination, with adjustable housings and reducing or shaping rolls
independently journaled in said housings, of drive shafts geared to the arbors of the
rolls at one end, and swiveled boxes journaling the opposite ends of said shafts,
substantially as shown and described.
8. In a machine for rolling cylindrical forms of metal, a head stock having a
bifurcated, slotted upper end, and a block pivoted in the said slotted ond of the stock,
which block has centrally attached thereto, between the members of the stock, a center,
substantially as shown and for the purpose specified.
9. In a machine for rolling cylindrical forms, the sectional housings 27, in com-
bination with a reducing and shaping roll mounted in the upper and lower portions of
each section of the housings, substantially as described.
10. In a machine for rolling cylindrical forms, the sectional and adjustable
housings 27, in combination with reducing and shaping rolls, one mounted in each of
said sections, substantially as herein shown and described.
11. In a machine for rolling cylindrical forms, the combination, with sectional
housings, shaping and reducing rolls, and arbors mounted in said housings, of line
shafts arranged between the said arbors, gearing between the shafts and arbors, a drive
shaft, and gearing between the drive shaft and line shafts, substantially as herein shown
and described.
12. In a machine for rolling cylindrical forms, the combination, with the shaping
and reducing roll arbors, of line shafts geared with tho said arbors and having their
forward ends pivoted, a drive shaft, and gearing between the drive shaft and line
shafts, substantially as herein shown and described.
13. In a machine for rolling cylindrical forms, the combination, with a table and
head and tail stocks mounted thereon, of shaping and reducing rolls, line shafts,
gearing between the line shafts and shaping and reducing rolls, a drive shaft, gearing
between the drive shaft and line shafts, and intermediate mechanism between the
drive shaft and table to operate the latter from the former, substantially as shown and
described.
14. In a machine for rolling cylindrical forms, the combination, with a head stock
having a forked upper end, the members of which are slotted, of a retaining bar pivoted
in the slot of one member and adapted to enter and be retained in the slot of the other
member, substantially as and for the purpose set forth.
1171
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.