An Improved Shuttle-race or Shuttle Guard for Looms.
Year: 1894

page_text: Date of Application, 26th Oct., 1894
Complete Specification Left, 26th July, 1895-Accepted, 7th Sept., 1895
[Communicated from abroad by LEOPOLDO SCONFIETTI, of Legnano, in the
Kingdom of Italy, Engineer.]
An Improved Shuttle-race or Shuttle Guard for Looms.
1, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to an improved shuttle-race, guide or guard for looms.
The shuttle-race forming the subject of the said invention appertains to the
category of those in which the parts specially designed to prevent the leaping of
the shuttle do not extend over the entire width of the loom, but cousist of guides
or guards arranged in the direction of the width of the loom and placed at suitable
intervals depending on the length of the shuttle.
These guides, being arranged so as not to prevent at all the manipulation of the
threads during the operation of the loom, inay be placed so near to the warp
threads that, instead of stopping the shuttle when it has commenced to leap, they
will provide for the shuttle a sliding track in such a manner that the leaping
becomes impossible.
The guides or guards are placed at intervals which are less than half the length
of the shuttle. They are mounted on the cap of the lathe by means of a bar
extending over the whole width of the lathe and secured to a supporting plate.
The bar may be displaced transversely at the time of the beaming so as to bring
the guides outside the vertical planes passing through the screws of the templets
used, but when once in its place maintains a relative position which is absolutely
invariable with regard to the cap.
When the shuttle-race
is in action, only the lower half of the pivoted part is seen from the side, the
upper half being concealed by the aforesaid fixed part to which it corresponds
in form.
Each guide consists of a fixed part and a pivoted part.
When the apparatus is in action this pivoted part can be turned only so as to
bring its lower half towards the interior of the loom.
It is moreover equilibrated so that it will always tend to occupy the normal
position. The lower half of the pivoted part being turned downwards will conduct
If the pivoted
the shuttle back to its track when it tends to recede therefrom.
part of the guide has been turned upwards by hand it will fall back of itself to its
normal position during the first beat of the lathe.
When the attendant ties the threads together again, removes the shuttle or
puts it back in its place the pivoted parts of the guides are automatically inclined
towards the reed, giving passage to the shuttle from the exterior to the interior.
In order that the manipulations may be effected more freely the attendant can also
raise the pivoted parts of the guides.
Such a shuttle-race formed of guides placed at certain distances apart may be
combined with one of the mechanisms already known whereby the shuttle-guard
is completely raised during the stoppage of the loom and is partially raised in
accordance with each throw of the weft thread when the reed strikes against the
fabric already formed. In this instance the guides are formed of a single piece

page_text: and are secured upon a shaft which receives the necessary oscillatory movement by
any of the well-known means. The said shaft is pivoted in supports the position
of which can be suitably regulated at the time of the beaming.
Dated this 26th day of October 1894.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
An Improved Shuttle-race or Shuttle Guard for Looms.
I, HENRY HARRIS LAKE, of the Firin of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 :-
This invention relates to an improved shuttle race or guard for looms fulfilling
the following conditions:
1. The operator is in no way interfered with in manipulating the shuttles or in
handling the threads.
2. The lay and the warp threads are but little covered or hidden by the said
guide or guard when it is in its protective position, and not at all when it is.
turned back.
3. The warp-threads are in no way damaged by the operation of the said
device; and
4. The shuttle deviating from its course is not arrested in its motion, but is
brought back to its proper course or race.
This improved shuttle-guiding or guard apparatus or device mainly consists of a
number of arms pivoted to the cover of the batten or lay, the distance between
which arms is less than half the length of the shuttle and which in their turned-
down position are situated so close over the shuttle race, that the shuttle, before
it can leave the warp-threads, is compelled to meet a guiding arm and, by it, be
conducted back to its proper course.
When the arms are turned up for the attachment of a warp-thread, or any other
manipulation which the loom may require to be performed, it is not necessary first
to secure them in position by means of a pin or bolt, or the like, as they, of their
own accord, will remain in the desired position until they are turned down again
by the attendant.
A guide or guard of this class is represented in the accompanying drawings
in which,
о
Figure 1 is a transverse sectional view showing the lay or batten, with the guide
and the warp threads open;
Figure 2 is a similar view but showing the warp threads closed, at the moment
when the lay catches or secures the weft thread; and
Figure 3 is a front view of the lay provided with the improved device.
"closed
"
Figures 4 to 6 illustrate a modified form of apparatus in which the guiding arms
appearance or shape. The effect of this arrangement, however,
is exactly the same as that of the first mentioned construction.
assume a
Figure 7 represents a still further modification of my improved device.
Upon the cover A of the lay, the rail b provided with the arms e is secured, to
which said arms are pivotally connected the guiding arms a. The distance or
spaces Figures 3 and 6 between these is less than half the length of the shuttle C
inasmuch as the shuttle, during its movement or stroke, moves upon the surface f
of the lay-block, it must, if it should deviate from its course, project over the
plane F F with its upper side, which plane is parallel to the rolling surface ƒƒ.
Now if such a shape be imparted to the guiding arms, in section, that they touch

page_text: the said plane F F at a given point, the possibility of the shuttle being thrown out
is entirely obviated.
In order to prevent the guiding arms from coming into contact with the templets,
it is necessary that they should not touch the plane G G (Figure 2) extending
through the highest points of the said templets.
GG shows the position which the line G G (Figure 2) assumes when the lay
is inclined as shown in Figure 1.
At the point of intersection a¹ (Figure 1) of the two planes F F and G' G' must
be situated the lowest point of the guiding arm. But in order to prevent the
shuttle from flying out between the lay B and the point a¹, the said guiding arm
should have such a shape in section that it may reach the plane H H which is
parallel to the said lay and supposed to extend through the side edge of the
shuttle.
a b c H indicate the theoretical lines which the guide must not cross in order
to comply with the conditions set forth above.
In order to enable all manipulations to be performed by the operator by hand
without any danger of injury, the guides are made in two parts, viz.: the stationary
part e and the rotating part a with the arms c and c" said arms a being pivoted at d.
The rotating portions may be turned up from their normal position Figure 2 shown
in full lines and in Figure 1 in dotted lines, by simply applying slight pressure to
them with the finger, so that they assume the position shown in Figure 1 in full
lines. The arms are so balanced that they return to their normal position of their
own accord directly the loom is set in motion. Should it therefore so happen that
in consequence of an oversight or carelessness on the part of the attendant, any one
of the guiding arms has not been turned down again after it has performed its duty,
no damage can result from the omission, since as soon as the lay touches it, the
arm will automatically descend.
The fixed parts e are fitted with projections t, and the pivoted parts a have
corresponding notches to engage said projections. The projections & limit the
rotary movement of the pivoted parts in both directions.
The
Referring to Figures 4 to 6 the same letters are applied to corresponding parts.
The projections t and the corresponding notches of the pivoted parts a prevent
the latter from rotating too far in the direction of the arrow a (Figure 4).
luge u limit the revolution of the pivoted parts in the direction of the arrow B*
(Figure 4).
In a further modification I may form the shuttle guard or guide of guides or
guards placed at suitable distances apart said guides being combined with any one
of the known forms whereby the shuttle guard is completely raised during the
stoppage of the loom and is partially raised in accordance with each throw of the
weft thread when the reed strikes against the fabric already formed. In such a
case the guides or guards are formed of a single piece and are secured upon a shaft
which receives the necessary oscillatory movement by any of the well known
means. The shaft being pivoted in bearings in supports the position of which can
be regulated at the time of beaming.
Such a modification is represented in Figure 7 in which the guide or guard
arms a are fixed upon a shaft b carried in brackets on the lay cover A, said arms
being capable of being raised entirely as shown in dotted lines a ** from which
position they automatically descend on the movement of the lay.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. A guide or guard for the shuttles of looms, characterized by the arrangement
of a series of guiding arms at suitable distances apart (such ass, being, say, one
half of the length of the shuttle); each of said arms cousisting of a stationary
part (e), secured to the lay cover, and a revolvable part (el c), pivoted to the said
cover which latter part cell presents such a shape in section, that in its uormal

page_text: position, its lower surface being close upon the warp thread, it serves as a guide or
guard for the shuttle, and which may be turned back upwardly and inwardly from
its normal position until, without requiring any support, it clears the lay or comb,
from which position it descends automatically to its normal position as soon as the
.loom is set in operation.
2. A guide or guard for shuttles of looms characterized by the arrangement of a
series of arms a at suitable distances apart, each of said arms being fixed upon the
shaft carried in brackets secured to the lay cover and adapted to be completely
raised during the stoppage of the loom from which position it automatically descends
to its normal position as soon as the loom is set in motion.
Dated this 26th day of July 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.