NEW OR IMPROVED MECHANISHI OR APPARATUS FOR APPLYING TENSION TO TAPES OR BANDS WHICH ARE EMPLOYED FOR DRIVING SPINDLES, SHAFTS, OR OTHER ROTATING BODIES
Year: 1875

page_text: LETTERS PATENT to Archibald Watson Finlayson, of Johnstone, in
the County of Renfrew, North Britain, for the Invention of "NEW
OR IMPROVED MECHANISHI OR APPARATUS FOR APPLYING TENSION TO TAPES OR
BANDS WHICH ARE EMPLOYED FOR DRIVING SPINDLES, SHAFTS, OR OTHER
ROTATING BODIES."
Sealed the 6th July 1875, and dated the 15th May 1875.
PROVISIONAL SPECIFICATION left by the said Archibald Watson
Finlayson at the Office of the Commissioners of Patents, with
his Petition, on the 15th May 1875.
I, ARCHIBALD WATSON FINLAYSON, of Johnstone, in the County of
Renfrew, North Britain, do hereby declare the nature of the said
Invention of "NEW OR IMPROVED MECHANISH OR APPARATUS FOR APPLYING
TENSION TO TAPES OR BANDS WHICH ARE EMPLOYED FOR DRIVING SPINDLES, SHAFTS,
OR OTHER ROTATING BODIES," to be as follows, that is to say :-
This Invention relates to new or improved apparatus or mechanism
for producing constant and invariable tension on driving tapes or bands
CD77

page_text: of machines wherein it is essential to ensure as little variation as possible
in the speed of the rotatory parts, and it is especially adapted for
applying tension to the driving tapes or bands by which the spindies of
spinning, twisting, doubling, or winding frames are driven.
The Invention consists of a bracket or frame or the equivalent thereof,
which is stationary when the apparatus is at work, and in or upon
which is a saddle or moveable frame capable of sliding longitudinally
upon it in either a forwards or backwards direction. The saddle or
moveable sliding frame carries or contains a pulley (commonly called
the tension pulley) free to revolve on its axis. Against the pulley the
driving tape or band works or travels; this pulley is pressed with a
constant tension against the driving tape or band. A chain or cord
attached to one end of the saddle or moveable sliding frame passes over
u pulley situated in the bracket or frame or otherwise, and having a
weight attached to it, a constant pressing or tension force acting upon
the driving tape or band is thus secured.
The bracket or frame which carries the saddle or moveable sliding
frame has a curved seat which is fitted to or rests upon a curved block
or clip, the bracket is thus capable of beiug adjusted to auy required
position to correspond with the pitch of the spindles or for driving them
in a right or left-hand direction.
The bracket or frame and the curved clip or block are mounted upon
a rail or beam, which in the case of a spinning, winding, or twisting
frame extends along that frame, and which is or may be raised or
lowered to the position required. A bolt passes through a slot in the
curved seat of the bracket, through a hole in the curved clip or block
and through a longitudinal slot in the rail or beam, thus producing an
adjustable joint by which to set the apparatus to any angle or position,
and a nut screwed to the bolt fastens the whole.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Archibald Watson Finlayson in the Great Seal
l'atent Office on the 13th November 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARCHIBALD
WATSON FINLAYSON, of Johnstone, in the County of Renfew, North
Britain, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her.
Letters Patent, bearing date the Fifteenth day of May, in the year
of our Lord One thousand eight hundred and seventy-five, in the
88th year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Archibald Watson Finlayson, Her
special license that I, the said Archibald Watson Finlayson, my
executors, administrators, and assigns, or such others as I, the said
Archibald Watson Finlayson, my executors, administrators, or assigns,
should at any time agree with, and no others, from time to time
and at all times thereafter 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, aud Isle
of Man, an Invention for "NEW OR IMPROVED MECHANISH OR APPARATUS
FOR APPLYING TENSION TO TAPES OR BANDS WHICH ARE EMPLOYED FOR DRIVING
SPINDLES, SHAFTS, OR OTHER ROTATING BODIES," upon the condition (amongst
others) that I, the said Archibald Watson Finlayson, by an instrument
in writing under my hand and seal, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Archibald Watson Finlayson, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the
accompanying Drawings, and to the letters and figures marked thereon,
that is to say :-
My said Invention relates to new or improved apparatus or mechanism
for producing constant and invariable tension on driving tapes or bands
of machines, wherein it is essential to ensure as little variation as
possible in the speed of the rotatory parts, and it is especially adapted for
applying tension to the driving tapes or bands by which the spindles of
spinning, twisting, doubling, or winding frames are driven.
And in order that my said Invention may be properly understood I
now proceed more particularly to set forth the system, mode, or manner
in or under which the same is or may be used or practically married into
.

page_text: effect, reference being had to the annexed Sheets of Drawings, and to
the letters and figures marked thereon, that is to say:-
On Sheet 1 of the Drawings hereunto appended Figure 1 is a plan of
the new
or improved apparatus or mechanism as constructed in
accordance with my said Invention; Figure 2 is a longitudinal section
of the same; and Figure 3 an elevation of the end marked A,
Figure 1.
As shewn by these Figures the apparatus or mechanism consists of a
framing or bracket B which is stationary when the apparatus is at work,
and 'in or upon which is a saddle or moveable frame C capable of sliding
in either a forwards or backwards direction on the frame B. The saddie
or moveable sliding frame C carries or contains a pulley D (commonly
called the tension pulley) which is free to revolve on its axis in the
bearings b, and against which the driving tape or band works or travels,
the pulley being pressed with a constant tension or pressure against the
said driving tape or band. A cord or chain attached to one end of
the saddle or moveable sliding frame C passes over a pulley F supported
in bearings at one end of the frame B, and free to revolve on its axis;
and to the end of the cord or chain passing over the said pulley Fa
weight E is attached, as shewn, which draws the sliding saddle con-
taining the tension pulley, whereby a constant pressing or tensive force
acting on the driving tape or band is secured.
The bracket or frame B which carries the saddle or moveable sliding
frame C.has a curved seat d at that part whereon the frame is supported,
which seat is fitted to or rests on a correspondingly curved surface
forined in a block or clip G, as more particularly seen in end elevation
at Figure 3, Sheet 1, of the Drawings. By means of this arrangement
the frame B which carries the sliding frame containing the pulley D is
rendered capable of being adjusted to any required position.
The frame B and the curved block or clip G are mounted upon a rail
or beam H, which in the case of a spinning, winding, or twisting frame
extends along that frame, and is or may be capable of being raised and
lowered therein to the position required; the beam which carries the
tension mechanism is bolted to the framework of the machine.
A bolt I passes through a slot in the curved scat d of the frame B
through a fble in the curved block or clip G. and through a longi-
tudinal slot in the rail or beam H, thus producing an adjustable

page_text: joint by which to set the apparatus to any angle or position, and a
nut screwed on to the lower end of the bolt I secures or fastens the
whole in position.
On Sheet 2 of the accompanying Drawings, Figure 1 illustrates in
side elevation, and Figure 2 in plan, the adaptation of the new or
improved apparatus or mechanism herein-before described and shewn
by the several Figures on Sheet 1 of the Drawings, to a spinning or
twisting frame for the purpose of exerting constant and invariable tension
on the tapes or bands L actuated by the cylinder N, by which the
spindles M thereof are driven or rotated.
On the Drawings the apparatus is illustrated as exerting tension on a
tape or band L driving four spindles M, the direction of revolution
being indicated by the arrows Figure 2, Sheet 2. Under this arrange-
ment, as shewn, a separate apparatus is provided for the driving of four
of the spindles of the spinning or twisting frame, but it is to be
understood that the apparatus may be used to produce constant and
invariable tension on tapes or bands driving any other suitable number
of such spindles greater or less than four; and further, it is to be under-
stood that, besides being employed as herein-before described in
connexion with the tapes or bands for driving the spindles of spinning,
twisting, doubling, or winding frames, the apparatus constituting my
said Invention may be employed in connexion with the driving tapes or
bands of machines generally, wherein it is essential or of importance to
ensure as little variation as possible in the speed of the rotating
parts.
Having now described and particularly ascertained the nature of my
said Invention, and the system, mode, or manner in or under which the
same is or may be used or practically carried into effect, I would observe
in conclusion that what I consider to be novel and original, and therefore
claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the arrangement and construction of the apparatus or
mechanism herein-before described and shewn on Sheets 1 and 2 of the
Drawings hereunto appended or any mere modification thereof in which
a weight is caused to act upon a sliding frame carrying a pulley which is
thereby forced or drawn against the tape or band, and the employment
of the said apparatus for producing constant and invariable tension on
the driving tapes or bands of machines, wherein it is essential or desirablė

page_text: substantially as set forth.
In witness whereof, I the said Archibald Watson Finlayson, have
hereunto set my hand and seal, this Tenth day of November,
One thousand eight hundred and seventy-five.
ARCHIBALD WATSON FINLAYSON. (L.S.)