An Improved Shuttle-guard for Power Looms.
Year: 1888

page_text: Date of Application, 28th Dec., 1888
Complete Specification Left, 8th Aug., 1889-Accepted, 14th Sept. 1889
PROVISIONAL SPECIFICATION.
[Communicated from abroad by RICHARD Jooss, chief of the Firm C. F. Plonquet,
of Heidenheim-on-the-Brenz, in the Kingdom of Würtemberg, German Empire,
Manufacturer.].
An Improved Shuttle-guard for Power Looms.
I WILLIAM LLOYD WISE of No. 46 Lincoln's Inn Fields, in the County of Middlesex,
Consulting Engineer and Patent Agent, do hereby declare the nature of this invention
to be as follows: :-
The object of the shuttle guard used in power looms is to prevent the shuttle from
being thrown out of its race an irregularity whereby many accidents and much
damage of material are caused.
In this improved shuttle guard the oscillating or vibrating motion of the lay is
utilized to bring the safety bar or bars into the protective position immediately the
loom starts.
Figures 1 and 2 of the accompanying drawings shew the new shuttle guard
applied to the lay cap.
The shuttle guard consists of guides or slides of any suitable form and of one or
moro safety bars.
The cross sections A, B, C and D in the accompanying drawings illustrate some
forms which may advantageously be employed.
In the constructions shewn in the figures A and B the guides are provided with
cheeks or bottoms for preventing the endwise displacement of the bar whilst in the
construction represented in Figure C, where the guide is open, the end wise
displacement is prevented by a groove arranged in the bar or by means of adjusting
rings.
In the construction shewn in Figure D the guide consists of a suitably shaped
slide piece, on which slides the bar, which is provided with slots.
In Figure 1 there is arranged in the middle of the bar a third guide which is
advantageously employed in very broad looms for preventing too violent a vibratory
motion of the bar.
For the most part one single safety bar will be sufficient, but should this not be
the case, the guides may then be arranged in such a manner, that two or more bars
slide one at the side of, or above the other. The safety bar has two different positions,
the protective position c and the non protective upper position c², into which latter
position the bar may be brought by the workman by means of an ordinary handle,
when the rod offers any impediment against entering the warp or performing any
other work.
The handle may be applied at top, at bottom or at the side of the lay cap
according to the shape of the latter, as may be convenient. .
Supposing the shuttle guard be in its upper position c¹ and the loom at rest, the
effect on the safety bar, when the lay passes from its position of rest to motion is.
naturally such that the first movement will be sufficient to throw the rod out of its
upper position into the guide within or on which it slides down into the position
corresponding to its intended object i.e. to act as a shuttle guard.
"Dated this 28th day of December 1888.

page_text: COMPLETE SPECIFICATION.
An Improved Shuttle-guard for Power Looms.
I, WILLIAM LLOYD WISE, of No. 46 Lincolns Inn Fields, in the County of Middlesex,
Consulting Engineer and Patent Agent, 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 object of the shuttle-guard used in power looms is to prevent the shuttle from
being thrown out of its race-an irregularity whereby many accidents and much
damage of material are caused. In this improved shuttle-guard the oscillating or
vibrating motion of the lay is utilised to bring the safety bar or bars into the
protective position immediately the loom starts.
Figs. 1 and 2 of the drawings filed with my provisional specification shew the new
shuttle-guard applied to the lay-cap.
The shuttle-guard consists of guides or slides of any suitable form and of one or
more safety-bars. The cross sections A, B, C and D in the accompanying drawings
illustrate some forms which may advantageously be employed.
In the constructions shewn in the figures A and B the guides are provided with
cheeks or bottoms for preventing the endwise displacement of the bar whilst in the
construction represented in Fig. C, where the guide is open, the endwise displacement
is prevented by a groove arranged in the bar, or by means of adjusting rings.
For the
In the construction shewn in Fig. D the guide consists of a suitably shaped slide
piece, on which slides the bar, which is provided with. slots. In Fig. I there is
arranged in the middle of the bar a third guide which is advantageously employed in
very broad looms for preventing too violent a vibratory motion of the bar.
most part one single safety bar will be sufficient, but should this not be the case, the
guides may be arranged in such a manner that two or more bars slide one at
the side of, or above the other. The safety bar has two different positions the
protective position c and the non-protective upper position c¹ into which latter position
the bar may be brought by the workman by means of an ordinary handle, when
the rod offers any impediment against entering the warp or performing any other
work.
The handle may be applied at the top, the bottom, or at the side of the lay-cap
according to the shape of the latter, as may be convenient. Supposing the shuttle
guard to be in its upper position c¹ and the loom at rest, the effect on the safety bar,
when the lay passes from its position of rest to motion is naturally such that the
first movement will be sufficient to throw the rod out of its upper position into the guide
within or on which it slides down into the position corresponding to its intended
object i.e. to act as a shuttle guard.
Having now 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 1
claim is :-
A shuttle guard for power looms consisting of one or more safety bars arranged
in free guides and applied to the lay in such a manner that the safety bars are
brought into the protective position when the lay passes from a state of rest to a
state of motion substantially as set forth and shewn in the drawings.
Dated this 8th day of August 1889.
W. LLOYD WISE,
Per F. J. Brougham.