IMPROVE- MENTS IN MILL GEARING
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said Norman Macbeth at tho
Office of the Commissioners of Patents on the 18th June 1881.
NORMAN MACBETH, of Bolton, in the County of Lancaster, Engineer. "IMPROVE-
MENTS IN MILL GEARING."
The first part of my Invention relates to the construction of belt or rope pulleys
with wrought rims, and consists in counter sinking the holes in the arm heads
which receive the rivets or bolts which fasten the rim to the arms, or (in pulleys
in which the arm ends themselves constitute the rivets) in counter sinking the
collar on the arın on which the rim bears, and in pressing, punching, or stamping
the metal of the rim into the countersunk parts thus formed on the arms, the
recesses thus formed in the rim receive the heads of the bolts or rivets, so that the
rivets or bolts may have larger heads and take a greater hold of the rim than if
the metal of the rim only were countersunk. By this means a lighter and
thinner rim may be used than formerly without diminishing the strength of the
rivetting.
The
The second part of my Invention relates to rope pulleys, and consists in forming
the rim with strips of rolled wrought metal fastened direct to the ends of the
arms of the pulley, or to a rim of metal connecting the ends of the arms.
sides of the wrought metal strips are of such a form that the space formed between
two adjacent strips serves as the groove for receiving the rope.
The arm ends, or
the metal rin connecting them, when such rim is used may be grooved or recessed
on the parts in connection with the wrought metal strips so as to keep the
latter true in their places, and the strips may be fastened in their places by rivets
or screws.
The third part of my Invention relates to adjustable bearings in which the
pedestal part is cast separate from the hanger bracket or pillar-clip. I cast the iron
base part of the pedestal around or upon the brass or bush part, the brass being
cast first. By this means the iron part contracts around the brass and holds it'
D

page_text: firmly in place. The pedestal has a hole cast or bored transversely in its base,
through which passes a stud pin, by means of which it is attached to the hanger.
The stud pin passes through a hole cast or bored in the hanger, and the part of the
stud pin in the hanger is eccentric with the part passing through the pedestal. I
use a straight instead of an eccentric stud pin when desirable. The pedestal can be
swivelled round the stud pin. The stud pin can be adjusted in the hanger
transversely to the length of the shaft. The stud pin can be turned in the hole in
the hanger. By these means adjustments in two or three directions may be
obtained. The stud pins can be fastened by screws or otherwise.
SPECIFICATION in pursuance of the conditions of tho Letters Patent filed
by the said Norman Macbeth in the Great Seal Patent Office on the
15th December 1881.
NORMAN MACBETH, of Bolton, in the County of Lancaster, Engineer. "IMPROVE-
MENTS IN MILL GEARING."
The first part of my Invention relates to the construction of belt or ropo pulleys
with wrought rims, and consists in countersinking the holes in the arm heads
which receive the rivets or bolts which fasten the rim to the arms, or (in pulleys
in which the aim ends themselves constitute the rivets) in countersinking the
collar on the arm on which the rim bears, and in pressing, punching, or stamping
the metal of the rim into the countersunk parts thus formed on the arms, the
recesses thus formed in the rim receive the heads of the bolts or rivets, so that the
rivets or bolts may have larger heads and take a greater hold of the rim than if
the metal of the rim only were countersunk. By this means a lighter and
thinner rim may be used than formerly without diminishing the strength of the
riveting.
The
The second part of my Invention relates to rope pulleys, and consists in forming
the rim with strips of rolled wrought metal fastened direct to the ends of the
arms of the pulley, or to a rim of metal connecting the ends of the armis.
sides of the wrought metal strips are of such a form that the space formed between
two adjacent strips serves as the groove for receiving the rope. The arm ends, or
the metal rim connecting them, when such rim is used, may be grooved or recessed
on the parts in connection with the wrought metal strips so as to keep the
latter true in their places, and the strips may be fastened in their places by rivets
or screws.
The third part of my Invention relates to adjustable bearings in which the
pedestal part is cast separate from the hanger bracket or pillar clip, I cast the iron
base part of the pedestal around or upon the brass or bush part, the brass being
cast first. By this means the iron part contracts around the brass and holds it
firmly in place. The pedestal has a hole cast or bored transversely in its base
through which passes a stud pin, by incaus of which it is attached to the hanger.

page_text: The stud pin passes through a hole cast or bored in the hanger, and the part of the
stud pin in the hanger is eccentric with the part passing through the pedestal. I
use a straight instead of an eccentric stud pin when desirable. The pedestal can
be swivelled round the stud pin. The stud pin can be adjusted in the hanger
transversely to the length of the shaft. The stud pin can be turned in the hole
in the hanger. By these means adjustments in two or three directions may be
obtained.
The stud pins can be fastened by screws or otherwise.
And in order that my Invention may be fully understood and readily carried
into effect, I will describe the accompanying Sheet of Drawings, reference being
had to the figures and letters marked thereon.
Fig. 1 is an elevation in section of a belt pulley made according to my Invention;
Fig. 2 is an enlarged view of part of the same; Fig. 3 is a section of part of a belt
pulley in which the arm ends themselves constitute the rivets; the dotted lines
indicate the outline of the extremity of the arm end before it is riveted.
Fig. 4 is a section of part of a rope pulley made according to the first part of
my Invention; similar letters of reference indicate similar parts in the different
view's.
a is an arm þead which is countersunk where the rivets pass through; similar
countersunk holes are made in all the arm heads; b is tho pulley rim in which
holes are made for the shanks of the rivets to pass through, and the portion of the
rim surrounding each hole is stamped or pressed into the countersunk recess in the
arm head; a rivet c or a bolt is inserted in each hole, and the rim and arm head
are riveted together. The rims are thus secured firmly to the heads of all the
arms, and as larger rivet heads can be used a larger portion of the rim is held
by the rivet than can be done when the rim is secured to the arms by the old
method.
Any convenient number of bolts, rivets, or screws may be used to fasten the rim
to the arm heads, and the joint of the rim may be in any convenient part of its
circumference.
Fig. 5 is an elevation, and Fig. 6 is a cross section of a rope pulley made
according to the second part of my Invention; at Fig. 7 are shown various sections
of metal strips for forming the ropo rims. Strips of other suitable section may be
used.
The arm heads are marked d, and in each arm head are formed grooves to
receive the annular strips of metal e of taper section which are fitted into these
grooves, and the arm heads are then hammered or caulked over at the edges of the
recesses which receive the strips to keep them in their places; the strips are also
secured by screws f; the ropes g rest between the annular strips of metal. Any
desired number of strips e may be used, and they may be secured to the arm heads
by screws or bolts, and the grooves in the arm heads may be dispensed with if
desired.
One or more rivets or bolts may be used to connect the rim to each arm head,
and the joint of the rim may be in any convenient part of the circumference.
The arm heads may be flat where the rim is connected to them, and intermediate
packing pieces may be introduced.
The arms of the rope or belt pulleys may be of cast or wrought metal.
Fig. 8 is a side elevation partly in section of my improved adjustable bearing
fitted to a pillar clip bracket, and Fig. 9 is a front view of the pillar clip bracket
and stud.
is the brass bearing on which is cast the pedestal i; k is an eccentric stud pin,
one end of which passes through the pedestal i, and on this end of the stud pin is
formed a square, so that it may readily be turned by a screw key for adjustment;
the other end of the stud pin enters a cylindrical hole in the pillar bracket 1, in
which it may be turned or moved longitudinally for adjustment; when tho stud
pin is in the desired position, it is secured in the pillar bracket by the screw m,
and the pedestal is secured on the stud pin by the nut n; by this arrangement the

page_text: bearing may be adjusted parallel to the axis of the shaft, and it may be raised, or
lowered, or adjusted transversely.
Fig. 10 is a side elevation of my improved bearing attached to a hanger p, the
end of which is split to receive the stud pin k which is secured in the hanger
by a bolt n¹.
Fig. 11 is a front view of the hanger and stud pin; instead of two webs the
hanger may have only one web split at the end, so that it may be caused by the
bolt n' to grip the stud pin firmly.
Fig. 12 is a side elevation partly in section of my improved bearing connected to
a wall bracket r; Fig. 13 is a front view of the bracket and stud pin; the
pedestal and stud pink are formed, fitted, and secured, as described in reference
to Figs. 8 and 9.
My improved bearing may bo mounted on a straight stud pin, or a pedestal of
ordinary construction in which is a suitable stud hole may be mounted on an
eccentric stud pin without departing from my Invention.
Having stated the nature of my Invention and described the manner of
performing the same, I declare that I claim,-
1. Forming countersinks in the arm heads of belt or rope pulleys which have
wrought metal rims, and pressing or stamping the metal of the rim into the recesses
thus formed, substantially as and for the purpose described and as shown on
Figs. 1, 2, 3, and 4.
2. The improved rope pulley formed by fixing annular strips of metal on to the
ends of the arms, substantially as shown and described in reference to Figs. 5
and 6.
3. The improved bearing formed by casting iron around or upon the brass / in
combination with an eccentric stud pin by which it is connected to a bracket or
hanger, as shown and described.
4. The combination with a bracket or hanger of the eccentric stud pin k, and a
shaft bearing with or without a brass step, as herein described.
In witness whereof, I, the said Norman Macbeth, have hereunto set my hand
and seal, this Thirteenth day of December, in the year of our Lord One
thousand eight hundred and eighty ono.
NADIAN MAGRETH
1701