Improvements Connected with the Taking Up and Letting Off Motions in Looms.
Year: 1885

page_text: Improvements Connected with the Taking Up and Letting Off
Motions in Looms.
I THOMAS HOWARD BLAMIRES of Leeds Road Huddersfield, Yorkshire Spinner
and Manufacturer do hereby declare the nature of my invention for "IMPROVE-
MENTS CONNECTED WITH THE TAKING UP AND LETTING OFF MOTIONS IN LOOMS
to be as follows:-
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This Invention has reference and is applicable to prior Letters Patents granted
to me on the 23rd November .A.D. 1883 No 5495, and 1st January A.D. 1884
N° 56. Those inventions consisted in certain means or methods of connecting a
positive letting-off motion, with a positive taking up motion so as to make them
rotate in unison one with the other. In the specifications above referred to the
sand beam or friction roller of the loom was driven by gearing from a horizontal
shaft which received its motion from the crank shaft by bevil wheels. The motion
thus given to the sand or friction beam was then transmitted by shaft to the other
gearing which let off the warp.
In weaving heavy goods I have found that the method of driving the mechanism
from the sand or friction beam was not altogether satisfactory as there was too
much one-sided strain upon the change wheel technically called the "pick wheel"
and the wheels connected there with, in fact so great was this one sided strain,
that the teeth of the wheels were often broken; there was also too much backlash,
besides the motion was slow and indirect.
SE
My present Invention is intented to drive the cloth taking up motion and the
warp letting off motion frou two opposite sides of the Pick wheel" instead of
from one as is now the case, such "pick wheel," as is well understood, being
employed to vary the thickness of the cloth being woven.
Rotary motion is first communicated to the pick wheel by worm and wheel
from the horizontal shaft. I then arrange to drive the gearing in connection with
the sand beam from one side of the pick wheel, whilst the opposite side of the
said wheel drives the gearing which communicates motion to the warp letting off
Daire Q77

page_text: mechanism, by which means the tension on the wheels is equally distributed and
the weight is balanced between the taking up mechanism and the letting off
mechanism.
This method of driving is also better adapted for getting up the speed of the
letting off gearing, and prevents the breakage of wheels previously mentioned.
Secondly. The method of reversing the motion of the taking up wheels in the
specification referred to above, was by means of a vertical or diagonal shaft which
geared with wheels on the sand or taking up beams, but the motion thus obtained
was slow and inconvenient.
I now reverse the taking up motion by means of the horizontal shaft mentioned
in the first part of this specification. This horizontal shaft is extended to the front
of the machine and a hand wheel placed thereon, the operation of which easily
winds the cloth on the sand beam or unwinds the warp off the warp beam
according to requirement.
Dated this Ath ML 1007

page_text: COMPLETE SPECIFICATION.
j
Improvements Connected with the Taking Up and Letting Off
Motions in Looms.
"
I, THOMAS HOWARD BLAMIRES of Leeds Road, Huddersfield, Yorkshire Spinner,
and Manufacturer do hereby declare the nature of my invention for "IMPROVE-
MENTS CONNECTED WITH THE TAKING UP. AND LETTING OFF MOTIONS IN LOOMS'
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:→
This invention has reference and is applicable to prior Letters Patent granted
to me on the 23rd of November A.D. 1883 N° 5495 and on the 1st of January
A.D. 1884 N° 56.
Those inventions consisted in certain means or methods of connecting a positive
letting-off motion with a positive taking up motion, so as to make them rotate in.
unison one with the other.
In the specifications above referred to the sand beam or friction roller of the
loom was driven by gearing from a horizontal shaft which received its motion from
the crank shaft by bevel wheels.
The motion thus given to the sand or friction beam was then transmitted by
shaft to other gearing which let off the warp.
pick
In weaving heavy goods I have found that the method of driving the letting off
mechanism from the sand or friction beam was not altogether satisfactory as there
was too much one-sided strain upon the change wheel technically called the "
wheel" and the wheels connected therewith; in fact so great was this onesided
strain that the teeth of the wheels were often broken; there was also too much
"backlash" besides the motion was slow and indirect.
My present invention is intended to drive the cloth taking up motion and the
warp letting off motion from two parts of the "pick wheel" preferably from two
Such "pick wheel" as is
opposite sides instead of from one as is now the case.
well understood varies the thickness of the cloth being woven.
Rotary motion is first communicated to the "pick wheel" by worm and wheel
from the horizontal shaft.
I then arrange to drive the gearing in connection with the sand beam from one
side of the "pick wheels" whilst the opposite side of the said wheel drives the
gearing which communicates positive motion to the warp letting off mechanism by
which means the tension on the wheels is equally distributed and the weight is
balanced between the taking up mechanism, and the letting off mechanism.
This method of driving is also better adapted for getting up the speed of the
letting off gearing and prevents the breakage of wheels previously mentioned.
Such being the nature and object of my invention I will now proceed to describe
the same more fully, and for that purpose have annexed the accompanying sheet of

page_text: drawings illustrative thereof, wherein Fig. 1 is end elevation of a loom having my
improvements applied thereto. A is the loom frame, B the crank shaft C the sand
beam, and D the winding on or cloth beam all arranged as usual.
I will now proceed to describe the means I employ for rotating the sand beam
and the cloth winding on roller, and this I effect direct from the crank shaft by
means of a spur wheel E fastened thereon. This spur wheel E is in gear with
another wheel F placed loosely upon a boss G working upon a short stud for
purposes hereinafter explained, but upon the said boss I fasten a clutch box or
ratchet wheel H into the. teeth of which is a pawl a attached by pin to the face of
the loose wheel F, which pawl a is kept in the teeth of the ratchet wheel by
spring b, therefore when the crank shaft is revolving in the direction of the arrow,
the wheel F will be driven with it and consequently a bevel wheel which is fastened
on the boss G will also be driven, which bevel wheel will operate another one on
the end of the horizontal shaft I and driven thereby.
The worm J on the said shaft I also rotates the worm wheel K and the "pick
wheel" L from one side of which "pick wheel" I drive the sand beam and the
cloth roller as will be easily understood and traced by the wheels shewn on the
drawings, therefore the mechanism herein described and shewn on the drawings
clearly indicate how the sand beam and taking up roller can be driven from the
crank shaft.
I will now proceed to describe how the warp is unwound from the warp beam,
and although I have shewn in the drawings two warp beams it will be evident
that one or more may be employed.
The "pick wheel " L is again employed and from the opposite side to that which
drives the taking up motion I drive mechanism which unwinds the warp, conse-
quently the strain upon the " pick wheel" is nicely balanced. N is a wheel in.
gear with and driven by the "pick wheel" which wheel N also drives the bevel
wheels O, shaft P, worm and wheel Q, and through the intervention of the inter-
mediate or corner wheels R, the pinion wheels S are driven which pinions rotate
the internal tooth wheels T, employed for driving the warp delivery rollers U
because upon the drums the warp beams Y are placed and are driven by frictional
contact therewith as is more fully explained in my former Patents referred to in
this Specification.
By changing the "pick wheel" L the required speeds are given to the cloth
taking up motion and also to the warp letting off motion.
In my former Specifications I did not employ the internal toothed wheel T but
caused the delivery roller U to be driven direct from the shaft P, but as such
method necessitated a shaft projecting from the centre of the delivery roller I could
not employ a large flanged warp beam because the flange came into contact with
the shaft projecting from the delivery roller, but by using the internal wheel T
I dispense with a projecting shaft and consequently can employ a large flanged
warp beam as will be understood.
In order to get the necessary amount of tension on the warp I pass it around
small rollers W, which can be forced as much as is required against the delivery
roller by means of the clamp X operated by screw c, or other systems of tension
rollers may be employed as shewn in the drawings of my former Specifications.
The shafts of the tension rollers W are placed in bearings working in slots in the
brackets Z and are adjustable by screws d.
Secondly The method of reversing the motion of the taking up wheels in the
Specifications referred to, was by means of a vertical or diagonal shaft which geared
with wheels on the sand or taking up beams, but the motion thus obtained was
slow and inconvenient.
I now reverse the taking up motion by means of the horizontal shaft I mentioned
in the first part of this Specification and in my former Patents.
This horizontal shaft I is now extended to the front of the machine and a hand
wheel 1 placed thereon, the operation of which easily winds the cloth on the sand

page_text: beam, or unwinds the warp off the warp beam according to requirement, the loose
wheel F allowing the said shaft I to be operated in either direction without
interfering with the crank shaft, by this means the warp can be tightened and
slackened when required.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
Firstly. The construction and arrangement of mechanisin substantially as herein
shewn and described, whereby the positive taking up motion for winding on the
cloth, and the positive letting off motion for unwinding the warp or warps are
driven from two parts of the pick wheel" which changes the speeds equally of
both the taking up of the cloth and the letting off of the warp according to the
various weight of cloth required.
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Secondly. The arrangement of gearing N and parts connected therewith which
are capable of being readily adjustable to the various sizes of "pick wheels'
whereby the letting off mechanisin for one or more warp beams is driven.
Thirdly. The means herein shewn and described for reversing the "taking up"
and letting off" motions.
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