NEW OR IMPROVED MACHINERY OR APPARATUS FOR PLACING DRIVING BANDS ON THE PULLEYS OR DRUMS OF SHAFTING, WHILE THE SAID PULLEYS OR DRUMS ARE IN MOTION
Year: 1872

page_text: LETTERS PATENT to Francis Robert Baker, of Leamington, in the
County of Warwick, Vulcanite Manufacturer, for the Invention
.of "NEW OR IMPROVED MACHINERY OR APPARATUS FOR PLACING DRIVING
BANDS ON THE PULLEYS OR DRUMS OF SHAFTING, WHILE THE SAID PULLEYS OR
DRUMS ARE IN MOTION."
Sealed the 5th July 1872, and dated the 30th January 1872.
PROVISIONAL SPECIFICATION left by the said Francis Robert Baker
•
at the Office of the Commissioners of Patents, with his Petition, on
the 30th January 1872.
I, FRANCIS ROBERT BAKER, of Leamington, in the County of Warwick,
Vulcanite Manufacturer, do hereby declare the nature of the said
Invention for "NEW OR IMPROVED MACHINERY OR APPARATUS FOR PLACING
DRIVING BANDS ON THE PULLEYS. OR DRUMS OF SHAFTING WHILE THE SAID PULLEYS
OR DRUMS ARE IN MOTION," to be as follows:-
When the bands or straps used for transmitting rotatory motion from

page_text: accidentally slip from the pulleys on which they run, it is requisite to
replace the band while the shaft continues its rotation. In doing this
there is a great risk that the dress of the persons effecting it will be
caught by the rotating shaft or pulley, and a large proportion of the
accidents to the person which occur in manufactories arise from this cause.
The object of my Invention is to afford a simple, safe, and expeditious
means of placing driving bands on the pulleys or drums of shafts while
the said pulleys or drums are in motion, and my said Invention consists
of the new or improved machinery or apparatus for that purpose herein-
after described.
My said Invention consists essentially of the following construction
and arrangement of parts :-Upon the shaft and close to the pulley is a
collar which carries an arm having a length equal to the radius of the
pulley. This collar is loose upon the shaft, and the said arm when in its
normal condition hangs vertically from the shaft very near to but not
touching the face of the pulley. At the end of the said arm is an incline
making with the said arm an obtuse angle. The said incline, which has
a length considerably greater than the breadth of the driving band,
terminates in a short rod, situated in a line parallel to the axis of the
rotating shaft. The way in which the loose collar carrying the parts
described is put on the shaft and retained in its place is herein-after
explained.
The action of the apparatus is as follows -When the band slips from
its pulley the loop which went over the pulley falls upon and is caught
by the rotating shaft. In order to restore it to its place on the pulley,
the arm described is raised by means of the short rod on the end of the
incline. As the said arm is raised from its pendent position the incline
passes under the loop of the band, the raising of the arm is continued
until it has described a semicircle, at which time the incline will present
its lowest point immediately opposite the highest point of the rotating
pulley, and the band slips down the said incline on to the pulley.
The arm is now let fall, when it resumes its normal or pendent
position.
The loose collar to which the arm is affixed is made in two halves,
so that the said collar may be put upon the rotating shaft by a clipping
action, instead of by sliding it from the end of the shaft. The loose collar
is kept in the required position near the pulley, either by two collars
↑

page_text: fixed respectively on either side of it, or by one collar on its outer side
and the bush of the pulley on its inner side. The said fixing collar or
collars are made in halves which engage together and are fixed on the
shaft by a screw. The incline by which the slipped band is restored to its
place on the pulley may either be rounded on its upper face to facilitate
the motion of the band, or it may be provided with a roller for the same
purpose.
The arm carrying the incline together with the incline and short rod
may be cast or otherwise formed in one piece, or the arm may be made
in two pieces, one screwing into the other, the said screwing effecting
the lengthening or shortening of the said arm so as to accommodate it to
pulleys of different sizes.
The parts of the apparatus described may be duplicated, one set being on
one side of the pulley, and the other set on the other side of the pulley, and
they may be connected together by a connecting rod extending over the
face of the pulley, but without touching it. By raising the apparatus
the band is restored to its place on the pulley, on whichever side of
the pulley it may have slipped off.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
r
filed by the said Francis Róbert Baker in the Great Seal Patent:
Office on the 26th July 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCIS
ROBERT BAKER, of Leamington, in the County of Warwick, Vulcanite
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of January, in the year
of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Francis Robert Baker, Her special.
licence that I, the said Francis Robert Baker, my executors, adminis-.
trators, and assigns, or such others as I, the said Francis Robert Baker,.
iny executors, administrators, and assigns, should at any time agree
with, and. no others, from time to time and, at all times thereafter;

page_text: during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for “New
OR IMPROVED MACHINERY OR APPARATUS FOR PLACING DRIVING BANDS ON THE
PULLEYS OR DRUMS OF SHAFTING WHILE THE SAID PULLEYS OR DRUMS ARE IN
MOTION," upon the condition (amongst others) that I, the said
Francis Robert Baker, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Dotant
.
NOW KNOW YE, that I, the said Francis Robert Baker, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say: -
When the bands or straps used for transmitting rotatory motion from
shafting to machinery to be driven or actuated by the said shafting,
accidentally slip from the pulleys on which they run, it is requisite to
replace the band while the shaft continues its rotation. In doing this
there is great risk that the dress of the person effecting it will be caught
by the rotating shaft or pulley, and a large portion of the accidents to
the person which occur in manufactories arise from this cause.
The object of my Invention is to afford a simple, safe, and expeditious
means of placing driving bands on the pulleys or drums of shafts while
the said pulleys or drums are in motion, and my said Invention consists
of the new or improved machinery or apparatus for that purpose herein-
after described.
My said Invention consists essentially of the following construction
and arrangement of parts :-Upon the shaft and close to the pulley is a
collar which carries an arm or arms having a length equal to the radius
of the pulley. This collar is loose upon the shaft, and the said arm or
arms when in their normal condition hang vertically from the.shaft very
near to but not touching the face of the pulley. At the end of the said
arm or arms-is-an incline, making with the said arm or arms an obtuse.

page_text: angle. The said incline, which has a length considerably greater than
the breadth of the driving band,_terminates in a short rod situate in a
line parallel to the axis of the rotating shaft. The way in which the
loose collar carrying the parts described is put on the shaft and retained
in its place is herein-after explained.
The action of the apparatus is as follows:-When the band slips from
its pulley the loop which went over the pulley falls upon and is caught
by the rotating shaft. In order to restore it to its place on the pulley
the arm or arms described are raised by means of the short rod on the
end of the incline. As the said arm or arms are raised from their
pendant position the incline passes under the loop of the band, the
raising of the arm is continued until it has described a semicircle, at
which time the incline will present its lowest point immediately opposite
the highest point of the rotating pulley, and the band slips down the
said incline on to the pulley. The arm is now let fall, when it resumes.
its normal or pendent position.
The loose collar to which the arm is affixed is made in two halves,
so that the said collar may be put upon the rotating shaft by a clipping
action, instead of by sliding it from the end of the shaft. The loose
collar is kept in the required position near the pulley either by two
collars fixed respectively on either side of it, or by one collar on its outer
side and the bush of the pulley on its inner side. The said fixing.
collar or collars are made in halves which engage together and are fixed
on the shaft by a screw. The incline by which the slipped band is
restored to its place on the pulley may either be rounded on its upper
face to facilitate the motion of the band, or it may be provided with a
roller for the same purpose.
The arm carrying the incline together with the incline and short rod
may be cast or otherwise formed in one piece, or the arms may be made.
in two or more pieces, one screwing into the other, the said screwing
effecting the lengthening or shortening of the said arms so as to accom-
modate them to pulleys of different sizes.
The parts of the apparatus described may be duplicated, one set being
on one side of the pulley and the other set on the other side of the pulley,
and they may be connected together by a connecting rod extending over
the face of the pulley, but without touching it. By raising the apparatus
the band is restored to its place on the pulley on whichever side of the
pulley it may have slipped off.

page_text: Having explained the nature of my Invention I will proceed to:
describe, with reference to the accompanying Drawings, the manner in
which the same is to be performed.
Figure 1 represents in elevation a driving shaft with its pulley and
band provided with my improved apparatus for lifting the driving band
on to the pulley during the rotation of the pulley.
Figure 2 represents the same view with the driving band slipped
from its pulley, and Figure 3 is an end elevation of Figure 2.
t
Figures 4, 5, 6, and 7 represent the apparatus detached from the shaft
and parts of the said apparatus.
The same letters of reference indicate the same parts in the several
Figures of the Drawings.
and set screw i.
1 a is the shaft, and 6 is the pulley or drum thereon; c is the driving
band receiving motion from the pulley d on the shaft e. The apparatus
for lifting the slipped driving band' on to the pulley 6 during the rotation
of the said pulley consists of an arm f, having a length equal or nearly:
so to the radius of the pulley b. This arm fis made by preference in
one piece with the half g of the collar g, g². The said collar g, g³, is
loosely secured to the shaft a by means of the supplementary collar h
The arm ƒ when in its normal position hangs vertically
from the shaft a very near to but not touching the face of the pulley b,
as seen in Figures 1 and 2. At the end of the armƒ is an incline ƒ, the
said incline having a length considerably greater than the breadth of the
driving band c. This arm f. is lengthened or shortened so as to fit the
apparatus to pulleys of different sizes by means of the screw at ƒ* on the
incline f taking into a screw box in the said arm f, the adjusted
position of the said incline being fixed by a lock nut f*. The incline ƒ*
may however be made in one piece with the arm f. At the bottom of
the said incline f² is a short rod f* for lifting the apparatus. The face
of the incline f which acts upon the slipped band is rounded as seen in
Figures 1 and 2, to facilitate the motion of the band, or the said incline
may be provided with a roller as represented in Figure 6, and marked f*,
for the same purpose.
•
The parts for securing the apparatus to the shaft are constructed as
follows: The loose collar 9, 92, is made in halves. The half collar g
with the arm f is shown detached in side elevation and end elevation. in

page_text: Figure 4, and the other half collar g³ is shown detached in side elevation,
plan, and end elevation in Figure 5. The top of the half collar g is open
to permit of the placing of it upon the shaft a by a clipping action. The
connection of the two half collars 9, 9³, is effected by the engagement by.
a sliding motion of the dovetail edges of the half collar g² with the
dovetail seat in the half collar g. In securing the collar of the lifting
apparatus on the shaft a, the half collar g is placed on the shaft by a
clipping action, and the collar is completed by the insertion in it of the
half collar 9. The loose collar g, g³, thus placed upon the shaft is kept
in the required positión by means of the short collar h and its screw i at
the outer end of the said loose collar, the opposite end of the loose collar
abutting against the bush of the pulley b, as seen in the Drawing. The
fixing collar h is shown separately in Figure 7. The said fixing collar h
is made in halves, which are engaged together in the manner described
with respect to the halves of the loose collar g, g². ·
.
The action of the apparatus is as follows:- When the band c slips
from the pulley b, as illustrated in Figure 2, the loop which went over
the said pulley falls upon and is caught by the loose collar 9, g³, on
the rotating shaft, the said loop passing on either side the lifting
apparatus. To restore the slipped band to its place on the pulley b
while the said pulley is rotating the arm f is raised from its pendent
position by the rod f³ at the end of the incline f³; a rod terminating
in a fork being by preference employed to lift the said rod f³, and through
it to give the required motion to the apparatus. As the arm fis raised
from this pendent position the incline f³ passes under the loop of the
slipped band, the said arm f being raised until it has described a
semicircle, at which time the incline f
immediately opposite the highest point
indicated by the dotted line in Figure 2.
have arrived at the position indicated, the band c slips down the said.
incline on to the pulley b, the arm fand parts connected with it are then.
allowed to resume their normal or pendent position, as illustrated in the
Drawing.
will present its lowest point
of the rotating pulley b, as'
Before the arm fand incline f

page_text: Instead of using a single incline on the pendent arm of the apparatus
the said pendent arm may carry two or more inclines. This modification.
of my Invention is illustrated in side elevation in Figure 8, and front
elevation in Figure 9 of the Drawings, where three inclines are employed,
the said inclines being marked respectively f,f", f, the said ƒ³, ƒ³, ƒ¢,
making a less obtuse, angle with the arm ƒ than the incline f* in the
first described apparatus.
On raising the pendent arm fof the apparatus, Figures 8 and 9, the
first incline fa passes under the band, and as the pendent arm is further
raised the second incline fb passes under the band and tightens the said
band. On the further motion of the pendent arm ƒ the third incline fo
passes under the band, and the band is further tightened before it is
finally restored to its place on the pulley b. The slipped band being
lifted is thereby gradually tightened as the lifting proceeds. This
apparatus is lifted by the engaging of an arm with the notch at the
bottom of one of the outer inclines.
Figure 10 represents in side elevation, and Figure 11 in plan of upper
side, a modification of the apparatus previously described. In Figure 12
the said apparatus, Figures 10 and 11, is represented in its normal
position affixed to the right-hand side of the pulley b on the rotating
shaft a. In this modification the pendent arm ƒ connected to the
shaft a, in the manner above described, carries at its bottom a curved
plate or portion of a hollow cylinder f", the radius of the said plate f"
being equal to that of the pulley with which it is used. That edge of
the plate f" which is presented to the pulley b is straight, while the
opposite edge is inclined. On the said inclined edge is a flange or rim ƒ³,
the said flange or rim projecting from the under side of the plate ƒ".
The apparatus is lifted by the pin f¹º.
In lifting the slipped band on to its pulley by the use of this apparatus,
the said apparatus is raised from its pendent position so as to describe a
semicircle, the direction of motion of the said apparatus being indicated
by the arrow. As the raising of the apparatus proceeds the slipped band-
which is first lifted by the broad end of the plate f" passes on to the
said curved plate f", the outer edge of the said band bearing against the
inclined rim or flange fs of the said plate, which rim or flange by a
lateral motion pushes the band towards the pulley b. As soon as the
arm has been raised through a semicircle and the highest point of the
band has been brought opposite the highest point of the pulley b, the

page_text: said band is pushed completely off the plate f' on to the said pulley by
the action of the inclined rim or flange ƒ³.
Instead of arranging a curved plate or portion of a cylinder with an
inclined rim or flange at the bottom of the pendent arm on the shaft, a
drum or hollow cylinder with an inclined flange upon its periphery may
be employed.
This arrangement of my Invention is represented in side elevation in
Figures 13 and 14, in section in Figure 15, and applied to the shaft at
Figure 13 shows the
the left-hand side of the pulley in Figure 12.
apparatus closed, and Figure 14 the same open ready to be put on the
shaft. k is the drum or cylinder part of the apparatus carried by the
adjustable pendent arm f, the latter being fixed to the shaft a by the
loose collar g, g³, and fixing collar h, i, in the manner first described.
The drum k is flat at ²; at the edge of the said flat part k³ of the
drum is a flange ³, and upon the cylindrical part of the said drum
is an inclined flange k*. The inclined flange k* crosses about one-half
of the drum. It then returns to the edge of the other half of the
drum, as seen in Figure 13. The slipped band falls on the flat part k³ -
of the drum k. By lifting the drum so as to cause the arm ƒ to
describe a semicircle, the slipped band is lifted on to the curved part
of the drum, and by the action of the inclined flange k* the said
slipped band is pushed by a lateral motion on to the pulley b, as will
be understood by an examination of Figure 12, where the direction
of motion of the drum to restore the slipped band to its place on the
pulley is indicated by an arrow.
The rim or flange ³ at the flat part k² of the drum is jointed to the
other part, and is fixed thereto by. a catch ³ engaging with a projection.
This apparatus is placed on the shaft by opening the flange in the
manner shown in Figure 14, and passing it on to the shaft through the
open top so as to make the half collar g clip the shaft. By then intro-
ducing the other half collar 92 into the half collar g, and fixing the
collar g, g³, by the fixing collar h, i, the apparatus is ready for use.
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I wish it to be understood that I
do not limit myself to the precise details herein described, as the
same may be varied without departing from the nature of my Invention.

page_text: But I claim as my Invention, the new or improved machinery or
apparatus herein-before described and illustrated in the accompanying
Drawings for placing driving bands on the pulleys or drums of shafting
while the said pulleys or drums are in motion, that is to say, machinery
or apparatus consisting essentially of an arm hanging vertically from
and turning freely on the shaft, and near to the face of the driving
pulley, the said arm being provided with an incline or inclines which pass
on the raising of the said arm from its pendent position under the loop
of the slipped band, lifting the said band and restoring it to its place
on the rotating pulley, substantially as described and illustrated.
Also the modifications described and illustrated in which, instead of
an incline or inclines on the pendent arm, a curved plate or drum or
cylinder provided with an inclined rim or flange is employed, to lift
the slipped band and restore it to its place on the rotating pulley.
"
Also the arrangement or combination of parts described and illustrated
of the loose collar to which the pendent arm of the apparatus is affixed,
and by which it is placed on the shaft, the said loose collar being used
in combination with a fixing collar or fixing collars, substantially as
described and illustrated.
In witness whereof, I, the said Francis Robert Baker, have here-
unto set my hand and seal, this Twenty-third day of July, in the
year of our Lord One thousand eight hundred and seventy-two.
Witness,
GEORGE SHAW.
FRANCIS ROBERT BAKER. (L.S.)