Improvements in Mechanism for Lifting and Lowering the Building or Traversing Rails of Spinning, Roving, Twisting, and Analogous Machines.
Year: 1889

page_text: Date of Application, 16th Mar., 1889
Complete Specification Left, 14th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Mechanism for Lifting and Lowering the Building
or Traversing Rails of Spinning, Roving, Twisting, and Analogous
Machines.
I, JOHN BOYD, of Shettleston Iron Works, Glasgow, in the County of Lanark,
North Britain, Engineer, do hereby declare the nature of this Invention to be as
follows, that is to say :-
My said Invention comprises an improved combination of mechanism for lifting and
lowering the building or traversing rails of spinning, roving, twisting, and analogous
machines, the said mechanism being powerful compact and comparatively simple, and
not liable to derangement.
In carrying out my Invention according to one modification the building or
traversing rails are lifted and lowered by means of vertical racks acted on by
pinions on a longitudinal shaft; and I prefer to have the racks of some of the
rails acted on by one pinion shaft in front of the pinions, and the racks of the
other rails behind the pinions so that the rails and other parts may counterbalance
each other. At one end the pinion shaft extends through a bearing in a fixed casting
which is made with a ring of internal teeth concentric with the shaft; and the shaft
extending further has loose on it the boss of a hevil wheel, this boss being eccentric
and having loose on it the boss of an inner wheel made with external teeth to gear
with the internal teeth of the fixed casting. The rotation of the bevil wheel and its
eccentric boss carries the inner wheel round but in consequence of its teeth meshing
with the fixed internal teeth it turns in the opposite direction to the bevil wheel to
an extent depending on the difference between the number of its teeth and that of the
fixed internal teeth. The rotation of the inner wheel is communicated to the pinion
shaft by means of a cross bar formed or fixed thereon and which engages with a plate
sliding between projections on the inner face of the inner wheel. This arrangement
forms what is known as a differential motion whereby a reduction of speed is
obtainable; and parts of it may be transposed or modified with similar results.
The bevil wheel hereinbefore referred to gears with two opposite bevil wheels which
are loose on a driving shaft at right angles to the pinion shaft. The two bevil wheels
are made with clutch faces to engage alternately with a clutch which is between them
and is driven by the shaft by means of a groove and feather. The clutch is movable
by a lever which is loose on a spindle having fast on it two levers, one of which has
an arm in a position to be acted on by adjustable lower and upper tappets upon a
bracket fixed to the building or traversing rail, the lower tappet lifting the lever on
the rail approaching its highest position and the upper tappet lowering the lever on
the rail approaching its lowest position. When the lever is being lifted it causes the
other lever fixed on the same spindle to bear against one of two reversely inclined
surfaces on the underside of a heavy lever centered on a fixed part. By the action on
the inclined surface the heavy lever is pushed up until the angle at the junction of the
two inclines gets over the end of the actuating lever; and then the heavy lever acting
like a tumbler quickly and certainly carries the lever through the remainder of its
stroke or movement. This completion of the movement by the heavy weight causes
the clutch lever to shift the clutch and thereby effect the reversal of the motion of the
pinion shaft, the movement of the clutch lever being effected by means of a projection
on one part between two projections on or a notch in the other part with as much
lay between them as will allow the actuating lever to reach the angle of the heavy
ever before acting on the clutch lever.
Dated this Fifteenth day of Mauch 1000
EDMUND HUNT,
Applicant's Agent

page_text: COMPLETE SPECIFICATION.
Improvements in Mechanism for Lifting and Lowering the Building
or Traversing Rails of Spinning, Roving, Twisting, and Analogous
Machines.
I, JOHN BOYD, of Shettleston Iron Works, Glasgow, in the County of Lanark,
North Britain, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be perforined, to be particularly described and ascertained
in and by the following statement, that is to say :-
My said Invention comprises an improved combination of mechanism for lifting
and lowering the building or traversing rails of spinning, roving, twisting, and
analogous machines, the said mechanism being powerful compact and comparatively
simple and not liable to derangement.
Mechanism made according to my Invention is shown on an accompanying sheet of
explanatory drawings,-on which figure, 1, is a side elevation, figure, 2, an end
elevation, figure, 3, a separate elevation of a part not fully seen in figure, 2, figure, 4,
a horizontal section, and figure, 5, a sectional face view of certain internal parts. In
these drawings the same reference numerals are used to mark the same or like parts
wherever they are repeated.
The mechanism shown in the drawings is in part carried by a casting, 6, bolted to
a transverse frame, 7, of a spinning or other machine. The building or traversing
rails, of which a part, 8, of one is shown in the drawings, are lifted and lowered by
means of vertical racks, 9, acted on by pinions, 10, on a longitudinal shaft, 11; and
1 prefer to have the racks of some of the rails acted on by one pinion shaft in front
of the pinions; and the racks of the other rails behind the pinions so that the rails
and other parts may counterbalance each other. The racks are formed on or fixed to
tubular carrying slides, 12, fitted to move vertically on stationary guide rods, 13, and
having the building rails, 8, fixed to them. In figure, 3, the rack is shown as fixed or
formed on a looped part, 14, of the slide, 12, so as to gear with the inner side of the
pinion, 10; whilst those slides which have the rack formed or fixed so as to gear on
the inner side of the pinions may be made without the looped part, 14.
At one end the pinion shaft, 11, extends through a bearing, 15, in the fixed
casting, 6, which is made with a ring, 16, of internal teeth concentric with the shaft ;
and the shaft, extending further has loose on it the boss, 17, of a bevil wheel, 18, this
boss being eccentric and having loose on it the boss, 19, of an inner wheel, 20, made
with external teeth to gear with the internal teeth, 16, of the fixed casting, 6. The
rotation of the bevil wheel, 18, and its eccentric boss, 17, carries the inner wheel, 20,
round but in consequence of its teeth meshing with the fixed internal teeth, 16, it
turns in the opposite direction to the bevil wheel, 18, to an extent depending on the
difference between the number of its teeth and that of the fixed internal teeth, 16.
The rotation of the inner wheel, 20, is communicated to the pinion shaft, 11, by
means of a cross bar, 21, formed or fixed thereon and which engages in a slot or
groove in a plate, 22, this plate being made with arms at right angles to its slot or
groove which arms are fitted to slide between projections, 23, on the inner face, of
the inner wheel, 20. This arrangement forms what is known as a differential motion
whereby a reduction of speed is obtainable and parts of it may be transposed or
modified with similar results.
The bevil wheel, 18, hereinbefore referred to gears with two opposite bevil
wheels, 24, 25, which are loose on a driving shaft, 26, at right angles to the
pinion shaft, 11. The two bevil wheels, 24, 25, are made with clutch-faced hosses,
to engage alternately with a clutch, 27, which is between them, and is driven by
the shaft, 26, by means of a groove and feather. The clutch, 27 is grooved
externally so as to be movable by pins on the fork arms of a lever, 28, which is
loose on a spindle, 29, having fast on it two levers, 30, 31, one, 30, of which is in a
position to be acted on by adjustable lower and upper tappets, 32, upon a bracket, 33,
fixed to the building or traversing rail, 8, the lower tappet lifting the lever, 30, on

page_text: the rail approaching its highest position, and the upper tappet lowering the lever on the
rail approaching its lowest position. When the lever, 30, is heing lifted it causes
the other lever, 31, fixed on the same spindle, 29, to bear against one of two reversely
inclined surfaces, 34, on the under side of a heavy lover, 35, centered on a fixed part.
By the action on the inclined surface, 34, the heavy lever, 35, is pushed up until the
angle at the junction of the two inclines gets over the end of the actuating lever, 31;
and then the heavy lever, 35, acting like a tumbler, quickly and certainly carries the
lever, 31, through the remainder of its stroke or movement. This completion of the
movement by the heavy weight, causes the clutch lever, 28, to shift the clutch, 27,
and thereby effect the reversal of the motion of the pinion shaft, 11, the movement of
the clutch lever, 28, being effected by means of a projection, 36, on one part between
two projections on, or the sides of a notch in the other part with as much play between
them as will allow the actuating lever, 31, to reach the angle, 34, of the heavy
lever, 35, before acting on the clutch lever, 28. The spindle, 29, of the levers, 28,
30, 31, is carried by a bracket, 37, formed on or bolted to the casting, 6, and
this bracket, 37, and another bracket, 38, are formed with bearings for the driving
shaft, 26.
Instead of the building or traversing rails, S, being raised and lowered by means of
racks and pinions, chains may be used, each having one end fixed to a boss or small
barrel substituted for the pinion, 10, and the other end being fixed to a projection at
the lower part of the slide, 12.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what
I claim is -
1-The combination of parts constituting my improved mechanism for lifting and
lowering the building or traversing rails of spinning, roving, twisting and analogous
machines, substantially as hereinbefore described and as shown in the accompanying
drawings.
2-In mechanism for working building or traversing rails of spinning, roving,
twisting and analogous machines, combining differential gear to reduce speed, with a
three-bevil wheel arrangement having a reversing clutch moved by adjustable
tappets traversing with the rails and combined with a heavy tumbler lever, the
parts being constructed, arranged, and operating, substantially as hereinbefore
described.
Dated this Twelfth day of December 1889.
EDMUND HUNT,
Applicant's Agent.