идотаади него.
Year: 1888

page_text: протошодию и дедотаете ади него.
I, UNICO HENRY WILKINS SCHENCK, residing at 468, 6th Avenue, Brooklyn, in
the County of Kings and State of New York, one of the United States of America,
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:-
The Invention consists of a series of belt supports secured to a supporting plate and
arranged in a segmental line thereon, concentric with and in close proximity to an
associated pulley. These supports form the carrier for the belt when it is not in
operation. In connection with the supports, we arrange a series of movable arms
corresponding in number to the number of the supports, one of said arms being
located in front of each support. These arms are provided on their outer ends, with
rollers capable of rotation toward the pulley. An operating lever is connected by
suitable intermediate mechanism with the arms, whereby they can be moved so as to
bring the rollers on their outer ends, either within or without the segmental line in
which the supports are arranged. When the belt is not in operation it is held upon
the supports. The arms carrying the rollers are so arranged that when they are moved
so as to bring the rollers beyond the supports, said rollers will engage with the under
side of the belt, at points beyond its running center line away from the pulley, and
will lift said belt from the supports and cause it to incline downward toward the
pulley. The tension and weight of the belt coming upon the upper surfaces of the
rollers approximate to the pulley, causes said rollers to revolve toward the pulley and
thus shift said belt onto the same.
A further feature of the invention, is a device for shifting the belt from the pulley
to the holder or supports; this consists of a pendent rod secured to a sliding bar
mounted in suitable bearings. Said arm being located on the side of the helt away
from the holder and connected by a rope or chain and suitable intermediate mechanism
with the lever which operates the devices for shifting the belt from the holder, so
arranged that the reverse movement of said lever will move the pendent arm toward
the holder, causing it to engage with the belt and shift it from the pulley to the
holder.
Figure 1, is a side elevation of the improved belt shifter, and a working pulley
associated therewith, dotted lines showing the movement of the devices for shifting the
belt from the holder to the pulley.

page_text: Figure 2, is a face view of the holder and devices for shifting the belt from said
holder to the pulley.
Figure 3, is a plan of the device for shifting the belt from the pulley to the holder,
and
Figures 4 and 5, are details.
A, represent a pendent bracket secured to the ceiling or other suitable support.
The lower edge of the bracket being formed in a segmental line. A¹, is a removable
segmental plate secured to the lower edge of the bracket by bolts and nuts, a.
B, is a sector-shaped plate forming a support for the belt shifting device hereinafter
described. The outer edge of the plate is formed with rounded T-shaped flange, b.
This flange rests between the lower edges of the bracket, A, and plate, A', which
conform to the shape of the T-shaped flange of the plate. Said plate is secured to
the bracket by tightening the nuts, a, so as to clamp the edge of the plate between
the bracket, A, and plate, A¹. A set screw, a¹, may also be used to secure the sup-
porting plate to the bracket. Instead of the removable segmental plate, A', for
securing the plate, B, to the bracket, a T-shaped groove may be formed in the lower
edge of the bracket in which the T-shaped flange on the supporting plate enters and is
secured in the desired position by one or more set screws.
C, represents a shaft passing under the plate, B. D, is a driving pulley mounted
thereon, and E, is the belt. 1, 2, 3, 4, represent a series of belt supports mounted
upon bolts, B¹, secured to and projecting at right angles from the supporting plate on
its side, approximate to the associated pulley. The belt supports are preferably
cylindrical in form and are arranged in a segmental line on the plate, concentric with
the associated pulley and in close proximity thereto. The outer surfaces of the
cylindrical supports being about flush with the face of the driving pulley. The first
of the supports, b', is placed in a line with the belt receiving point of the pulley, the
last support, b, in a line with point where the belt leaves the pulley. These supports
form the belt carrier or holder. When the direction of the belt is changed so as to
change the belt receiving point of the pulley and point at which said belt leaves the
pulley, it is desirable to change the position of the supporting plate so that the belt
supports 6, 64, will be in line with these points. This is accomplished by loosening
the nuts on the bolts, a, and moving the plate, B, to the desired point, as shown in
dotted lines in figure 1.
The belt is shifted from the pulley onto the supports by means of the device herein-
after described, or by any other suitable device or by hand. The return of the belt
to the pulley being dependent upon the action of the shifting device which will now
be described.
Projecting from and in front of each cylindrical support are arms, F, having
shoulders, F. On the outer ends of said arms are mounted rollers or sheaves G, held
in place by nuts, f. The first of the series of rollers or sheaves coming between
supports,,, the second between supports, 2 and 3, &c., the last roller having no
belt support beyond it. Said rollers or sheaves, G, are capable of rotation toward the
pulley. The arms, F, are so secured to the supports that when said arms are
raised, the rollers or sheaves on the same will engage with the under side of the belt
at points beyond its running center line away from the pulley. This is preferably
accomplished by securing said arms to the supports on one side of their longitudinal
centers, away from the pulley. Said arms may, however, be bent so as to accomplish
the same result.
H, represents lever arms, projecting from the supports at about right angles to the
arms, F. The ends of said lever arms are connected at equal distances apart by
links, I. K, is an operating lever rigidly secured to one of the belt supports,
preferably to the support, 2. k, is a rod secured to the end of the lever and hanging
within reach of the operator; by means of this rod, said lever may be moved up or
down as desired. When the belt is not in operation it rests upon the supports forming
the carrier, having been shifted onto the same by the shifting device hereinafter
described, or by any other approved shifting device. The rollers or sheaves, are then
within the segmental line in which the supports are arranged and do not touch the

page_text: belt. When it is desired to shift the belt from the carrier onto the pulley, the opera-
tion of this part of the invention is as follows:
The operator draws the free end of the lever down as shown in dotted lines, and
through the intermediate mechanism described turns the cylindrical supports until the
arms, F, are moved so as to bring the rollers or sheaves on their outer ends in contact
with the under side of the belt at points beyond its running center line away from the
pulley; continuing to move the lever down, the rollers are noved without the
segmental line in which the supports are arranged, thus lifting the belt from said
supports and causing it to incline downward toward the pulley. The greater weight
and tension of the belt coming upon the inner, upper surfaces of the rollers approxi-
mate to the pulley causes said rollers or sheaves to revolve toward the pulley and thus
shift the belt onto the same.
The device for shifting the belt from the pulley to the carrier or holder, is constructed
and arranged as follows:
Secured to the ceiling or other support at a point on the side of the belt away from
the carrier and on the opposite side of the pulley are brackets or bearings, L. Mounted
in said brackets is a sliding bar, M, having a pendent arm, N, located between the
brackets or bearings. Instead of two bearings one may be used with longitudinal slot
through which the arm projects. Mounted on the bolt, B', is a sheave, O, which is
secured to the support, U, so as to turn with it when said support is operated by the
lever through the intermediate mechanism. P, is a rope or chain secured at one end
to the sheave and at its other end to the arm. N, or the sliding bar, M. Said rope or
chain passes over a pulley, R, located in front of the bearings. Thus preventing the
rope from coming in contact with the belt or pulley. When the lever is moved up,
the sheave turns in the direction of the arrow and winds the rope or chain partially
around it; this draws the bar, M, toward the carrier or holder and the arm, N, coming
in contact with the belt shifts it from the pulley to the carrier. When the lever is
drawn down to effect the shifting of the belt from the carrier to the pulley, the
sheave turns in the opposite direction to the arrow and unwinds the rope or chain, the
belt then coming in contact with the arm, N, forces it back.
With the improved belt shifter heavy and tight belts can readily and easily be shifted
on or off a working pulley.
It is evident that various changes may be made in the construction and arrangement
of the various parts described without departing from the spirit and scope of the
invention, and it is therefore not limited to the construction herein set forth."
Having thus 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 belt shifter, a sustaining frame, a series of belt supports arranged in a
segmental line thereon in close proximity to an associated pulley, in combination with
a series of movable arms mounted on the frame within the segmental line in which the
supports are arranged, and connected with a suitable operating lever, and having
rollers on their outer ends capable of rotation towards the pulley, and adapted to
engage with the under side of a belt on the supports, lift the same and shift it onto
the pulley when the outer ends of the arms are moved beyond said supports, as shown
and described.
2. In a belt shifter, a sustaining frame, a series of belt supports arranged in a
segmental line thereon, in close proximity to an associated pulley, in combination with
a series of movable arms mounted on the frame within the segmental line in which
the supports are arranged and connected with á suitable operating lever, and having
rollers on their outer ends capable of rotation toward the pulley, and so arranged that,
when the outer ends of the arms are moved beyond the supports, the rollers will
engage with the under side of the belt on the same, at points beyond its running center
line away from the pulley, substantially as shown and described.
3. In a belt shifter, the combination of a suitable sustaining plate, a series of
laterally projecting belt supports mounted on bolts secured to said plate and arranged

page_text: in a segmental line thereon, in close proximity to an associated pulley, said belt supports
having shifting arms projecting at an angle therefrom and provided with rollers on
their outer ends, and lever arms connected with a suitable operating lever, substan-
tially as shown and described, whereby, when the belt supports are turned, the rollers
on the shifting arms will engage with the under side of the belt on said supports, lift
the same and shift it onto the pulley.
4. In a belt shifter, the combination of a bracket secured to a suitable support, an
adjustable sustaining plate, a series of belt supports arranged in a segmental line
thereon, in close proximity to an associated pulley, a series of movable arms mounted
on the frame within the segmental line in which the supports are arranged, and con-
nected with a suitable operating lever and having rollers on their outer ends capable
of rotation toward the pulley, and adapted to engage with the under side of the belt
lift the same, and shift it onto the pulley when the outer ends of the arms are moved
beyond said supports, substantially as shown and described.
5. In a belt shifter, the combination of the supporting plate, B, belt supports,
61, 62, 63, 64, arranged in a segmental line thereon and having lever arms, H, con-
nected with a suitable operating lever, and projecting arms, F, having rollers on
their outer ends, said arms being so arranged that when their outer ends are moved
beyond the supports, the rollers will engage with the under side of the belt at points
beyond its running center line away from the pulley, substantially as shown and
described.
6. In a belt shifter, the combination of the supporting plate, B, belt supports,
b', 62, 63, 6, mounted on said plate and having projecting arms, F, provided with
rollers or sheaves on their outer ends, and the lever arms, H, links, I, and operating
lever, K, substantially as shown and described.
7. In a belt shifter, the combination of the bracket, A, the adjustable sustaining
plate, B, secured thereto, the belt supports, 6, 62, 63, 64, arranged in a segmental
line on said sustaining plate, and having lever arms connected with a suitable
operating lever, and projecting arms, having rollers on their outer ends, said arins
being so arranged that when their outer ends are moved beyond the supports, the
rollers will engage with the underside of the belt on the supports lift the same
and shift it on the pulley.
8. In a belt shifter, a suitable belt holding frame arranged in close proximity to
an associated pulley and a sheave mounted on said fraine and connected with an
operating lever, in combination with a sliding bar mounted in bearings above the pulley,
and having a pendent arm adapted to engage with a belt on its side away from the
belt holder, a rope or chain secured at one end to the sheave and at the other to the
sliding bar, as shown and described, whereby, when the sheave is turned in one
direction, the rope or chain will be wound around the same and draw the pending arm
toward the holder and cause it to engage with and shift the belt from the pulley onto
the belt supports.
9. In a belt shifter, the combination of the sustaining plate, B, having belt
supports, 61, 62, 63, 64, arranged in close proximity to an associated pulley, the
sheave, O, mounted on said plate and connected with a suitable operating lever, the
sliding bar, M, mounted in bearings and having the pendent arm, N, and the ropo
or chain, P, connecting the sliding bar and sheave, substantially as shown and
described.