Year: 1888

page_text: Date of Application, 14th Feb., 1888
Complete Specification Left, 10th Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
1, THOMAS WILLIAMS, of Bute East Moors, Cardiff in the County of Glamorgan,
fire brick manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention, which relates to lock-stitch sewing machines in which two ordinary
reels are used to contain the upper and lower threads, consists, firstly, in an improved
arrangement of hooks designed to oscillate or partially rotate alternately in opposite
directions about the carrier which contains the reel from which the second or under
thread is supplied.
According to this invention the two hooks which in turn take into and spread the
loops of the needle thread over the carrier of the lower reel, are formed at opposite
ends of a curved frame composed of two bars arranged approximately parallel, open at
one end and united by a central cross bar. The hook at one end of the frame springs
therefrom at the side opposite to that from which the hook at the other end springs,
and the space provided at one end of the frame between the hook and the frame for
the passage of the thread is at the opposite side to the corresponding space at the
other end of the frame.
By this arrangement of hooks springing from opposite sides of the frame on which
they are formed, the thread is spread over the carrier in the same way by one hook as
by the other, and twisting and tangling of the needle thread are obviated.
Extending over the hooks and attached at opposite sides of the frame are guides
which assist in spreading the loops.
This invention consists, secondly, in the use, for supporting the reel-carrier aforesaid
in its place, of a spring pin fitted in the outer bracket. The tendency of the spring,
which is coiled around the pin, is to maintain the latter in such a position that the
inner end thereof projects beyond the inner face of the outer bracket and bears
against the reel carrier when the latter is in its place. In order to remove the carrier
or to re-insert it after removal, the pin is drawn back by hand, and, after removal or
re-insertion of the carrier, the pin is allowed to resume its normal position under the
influence of the spring aforesaid.
1000
NICHOLAS WATTS,
Applicant's Agent.

page_text: I. THOMAS WILLIAMS of Bute East Moors, Cardiff, in the county of Glamorgan,
fire brick manufacturer, 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, which relates to lock-stitch sewing machines in which two ordinary
reels are used to contain the upper and lower threads, consists, firstly, in an improved
arrangement of hooks designed to oscillate or partially rotate alternately, in opposite
directions about the carrier which contains the reel from which the second or under
thread is supplied.
According to this invention the two hooks which in turn take into and spread the
loops of the needle thread over the carrier of the lower reel, are formed at opposite
ends of a curved frame composed of two bars arranged approximately parallel, open
at one end and united by a central cross bar. The hook at one end of the frame
springs therefrom at the side opposite to that from which the hook at the other end
springs, and the space provided at one end of the frame between the hook and the
frame for the passage of the thread is at the opposite side to the corresponding space
at the other end of the frame.
By this arrangement of hooks springing from opposite sides of the frame on which
they are formed, the thread is spread over the carrier in the same way by one hook as
by the other, and twisting and tangling of the needle thread are obviated.
This invention consists, secondly, in the use, for supporting the reel-carrier aforesaid
in its place, of a spring pin fitted in the outer bracket. The tendency of the spring,
which is coiled around the pin, is to maintain the latter in such a position that the
inner end thereof projects beyond the inner face of the outer bracket and bears
against the reel carrier when the latter is in its place. In order to remove the carrier
or to re-insert it after removal, the pin is drawn back by hand, and, after removal or
re-insertion of the carrier, the pin is allowed to resume its normal position under the
influence of the spring aforesaid.
Referring to the accompanying sheet of drawings, Fig. 1 thereon represents a view
of the back or outer face of my improved hooks for two-reel lock-stitch sewing
machines. In this view the frame and the hooks are, for the sake of clearer illustration,
shown flattened, whereas in reality the frame is curved in the shape of a C and, as
aforesaid, it is the back of the C which Fig. 1 represents. Fig. 2 is an end view of
part of a two-reel lock-stitch sewing machine fitted with my improved hooks.
The hooks a and bare formed at opposite ends of a frame curved as aforesaid.
This frame consists of the two bars c and d united by the cross bar e.
The hook a
springs from the frame at the opposite side to that from which the hook springs and
the space between the hook a and the bar d is at the opposite side to that at which is
the space g between the hook and the bar c. These spaces and g are
permit the passage of the needle thread as the loops therein are formed.
provided to
With the

page_text: hooks constructed as described the thread is spread over the carrier A, Fig. 2, in the
same way by one hook as by the other as they oscillate or partially rotate alternately
in opposite directions about the carrier. As is well understood, the reel on which is
contained the second or under thread is placed in the carrier A. Extending-over the
hooks a and b are the guides h which assist in spreading the loops over the carrier
and cause the loops to be reversed for throwing off.
At Fig. 2 the hook frame is shown attached to a disc B centred on the shaft C
which is made to oscillate or partially rotate alternately in opposite directions by
suitable mechanism.
The hook a is shown receding downwards from the needle after having engaged
with a loop in the needle thread m. The second or under thread n is conducted
up from the carrier A as ordinarily. As the hook a recedes it spreads the loop over
the carrier A and tightens the loop previously formed in precisely the same way by
the hook b, and the second thread being embraced by the loops the lock stitches are
formed in the material being sewn. By arranging the hooks to spring from opposite
sides of the frame, as aforesaid, the loops are spread over the carrier in the same way
by each, and not differently as when the hooks spring from the same side of the frame.
With both hooks springing from the same side of the frame twisting or kinking
and entanglement of the needle thread of which the loops are formed occur, which
objections are avoided with hooks constructed and arranged in accordance with this
invention.
ין
"
"
This invention consists, secondly, in the use of a spring pin 1, Fig. 2, for supporting
at one side the carrier A. The pin is carried in a chamber in the outer bracket. D.
About the neck of the pin is coiled a spring acting so as to force the inner end of
the pin below the carrier A which is thereby supported at that side. In order to
remove the carrier A, or to re-insert it after removal, the pin is drawn back by hand
and the spring compressed, and after removal or re-insertion of the carrier, the pin is
allowed to resume its normal position under the influence of the spring .
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The use, in two-reel lock-stitch sewing machines, of hooks such as a and b for
engagement with the loops of the needle thread the said hooks springing from opposite
sides of the frame on which they are formed and made to oscillate or partially rotato
alternately in opposite directions about the carrier in which the reel of the under thread
is contained, substantially as hereinbefore described.
2. In a two-reel lock-stitch sewing machine the use of a pin such as l, fitted with a
spring such as for supporting the carrier of the reel on which the second or under
thread is wound, substantially as described with reference to Fig. 2 of the accom-
panying drawings.
Dated this 9th day of November 1888.
NICHOLAS WATTS,
Applicant's Agent.