Improvements in Bobbin Carriages employed in Twist Lace Machines.
Year: 1890

page_text: Date of Application, 13th Oct., 1890
Complete Specification Left, 11th July, 1891-Accepted, 13th Jan., 1802
PROVISIONAL SPECIFICATION.
Improvements in Bobbin Carriages employed in Twist Lace
Machines.
I, HENRY SMITH CROPPER, of Great Alfred Street, in the Town and County
of the Town of Nottingham, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
The invention has for its object improvements upon the hollow breasted triangular
carriage shown and described in the Specification of Cropper, Cropper & Birks,
No. 20280 of the year 1889, and relates to an improved construction of the carriage
whereby the size of the bobbin can be increased in relation to the carriage, or the
size of the carriage can be reduced in relation to the bobbin.
In such description of bobbin carriages as heretofore made, that part which rides
in the combs is of less thickness than that which carries the bobbin, thereby
necessitating the bobbin to be located entirely in that part of the carriage which is
above the combs, and consequently causing a comparatively small bobbin to be used
in proportion to the size of the carriage.
According to my invention I make the carriage of one thickness throughout,
thereby enabling the lower part of the bobbin to be so located therein as to run
between the combs and to be a shorter distance from the bottom of the carriage
than would be possible in the old form of carriage. I can also make a carriage
(having a given size of bobbin) of shorter radius than heretofore, thereby enabling
the breast to be more hollowed in form, whereby the carriage is enabled, without
the use of points, to take up gimps, thick threads &c. more safely and more
satisfactorily than would be possible with a carriage of any other form.
Dated Oenhor 12+1, 1900
COMPLETE SPECIFICATION.
Improvements in Bobbin Carriages employed in Twist Lace
Machines.
I, HENRY SMITH CROPPER of Great Alfred Street in the Town and County
of the Town of Nottingham Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement reference being had to the
accompanying drawings and to the figures and letters marked thereon:-
The invention has for its object improvements upon the hollow breasted
triangular carriage shown and described in the Specification of Cropper Cropper &
Birks No. 20280 of the year 1889 and relates to an improved construction of the
carriage whereby the size of the bobbin can be increased in relation to the carriage,
or the size of the carriage can be reduced in relation to the bobbin.
Figure represents a side view of a bobbin carriage constructed according to the
Patent herein referred to.
Figure 2 is a side view and Figure 3 is an edge view of a bobbin carriage made
according to my invention.
Figure 4 is a side view of a slightly different form of my improved carriage and
Figures 5 and 6 represent two views of a lead of combs suitable for my improved
carriage and showing one in position.

page_text: In such description of bobbin carriages as heretofore made according to the
aforesaid Patent one of which is represented at Figure 1. that part marked a' which
rides in the combs is of less thickness than that marked a which carries the bobbin b
thereby necessitating the bobbin to be located entirely in that part of the carriage,
marked a, which is above the combs and consequently necessitating the use of a
comparatively small bobbin in proportion to the size of the carriage.
C
According to my invention I make such class of carriage as represented at
Figures 2, 3 and 4 of one thickness, throughout, that is to say I do not reduce the
thickness of the lower part al which works within the combs e but retain it of the
same thickness as the upper part a of the carriage thereby enabling the lower part
of the bobbin to be so located therein as to run between the combs and to be a
shorter distance from the bottom of the carriage than would be possible in the old
form of carriage.
C
I can also according to my invention make a carriage (having a given size of
bobbin) of shorter radius than heretofore thereby enabling the breast to be more
hollowed in form, whereby the carriage is enabled, without the use of points, to
take up gimps, thick threads &c. more safely and more satisfactorily than would be
possible with a carriage of any other form.
Figures 2 and 3 represent one of my improved carriages the size and external
shape of which are exactly similar to those of the carriage shown at Figure 1. but
in consequence of making it of equal thickness throughout as shown more clearly at
Figure 3am enabled to fit it with a larger bobbin than it would be possible to do
with the carriage shown at Figure 1. in which the bottom curved part, a', is formed
thinner than the main or upper part, a, thereof.
Figure 4 represents another bobbin carriage constructed according to my inven-
tion in which the carriage is struck from a shorter radius than Figures 1 and 2,
the object being to make the breast more hooked in form and thereby enable it to
take up gimp, thick threads &c. more securely than would be done by a carriage of
larger radius and less hooked in form.
In order to enable bobbin carriages of my improved construction to be worked as
closely together as ordinary bobbin carriages the combs c in which they work are
made thinner than those used for ordinary carriages and the combs of each lead
near the ends thereof are connected together by a cross bar or lead el cast on to
nibs or projections on the combs, such bar or lead and the lead e² serving to
support the carriages in their traverse across the machines.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The improved construction of hollow breasted triangular bobbin carriage for use
in twist face machines substantially as herein shown and described and for the
purpose stated.
Dated July 11th 1831.
H. S. CROPPER.
By Harris & Mills,
23, Southampton Buildings, London, W.C.