Improvements in the Manufacture of Chains with Detachable Links.
Year: 1895

page_text: Date of Application, 15th July, 1895
Completa Cannifolio Last 27th Mar 1006 Accepted 2nd May 1206
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Chains with Detachable Links.
1, CHARLES WILLIAM BURTON, Junior, of 68 Rue des Marais, Paris, in the
Republic of France, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows :-
The improvements forming the subject of the present invention are applicable to
chains composed of open links and closed links.
These improvements are illustrated in the accompanying drawing.
The closed links A, B, Figure 1, are of rectangular or quadrangular form.
The open links C have the form represented in Figures 2 and 3.
The transverse bars b of the closed links A, B are cylindrical and the longitudinal
bars are of rectangular cross-section as shown at E in Figure 1, or cylindrical
with notches in each of them, as in Figure 4, permitting their passage into the
opening of the open link.
These links may be made of any desired dimensions from steel, cast, forged,
stamped or rolled, or from malleable cast iron, bronze or other suitable metal.
They may, when it is necessary to reinforce or strengthen the chain without unduly
augmenting the weight thereof, be provided with ribs F, Figures 1 and 2, or with
lugs or other projections.
The forming of the chain or assembling of the links is effected as follows:-The
open link C being in the position indicated in Figure 2, a closed link is held
perpendicularly and in line with the opening of the open link, and is then caused
to slide into this opening until it can be turned into the position indicated at H;
another link I is then inserted in like manner, and so on until a chain of the desired
length is formed and, if necessary, until the end links are connected so as to form
an endless chain.
The links can then be separated only by imparting to them movements the
reverse of those above mentioned for hooking them together, which cannot take
place accidentally; when the chain is stretched for use the links cannot become
detached.
The longitudinal bars of the links have only to bear the stress of tension and
their cross section is calculated accordingly; the transverse bars of the links have
besides to bear the effects of wear, their cross section is, therefore, calculated in
such a manner that, after the diminution of their diameter due to friction, that is
to say, after the chain has been subjected to the wear it was intended to withstand,
they will have a strength equivalent to that of the longitudinal bars, and this
diameter will not permit them to escape readily from the open link. The latter, in
order to provide for this wear, is strengthened at the part in contact.
Dated the 15th day of July 1895.
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C., .
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Chains with Detachable Links.
I, CHARLES WILLIAM BURTON, Junior, of 68 Rue des Marais, Paris, in the
Republic of France, Mechanical Engineer, 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
improvements-forming-the-subject-of-the-present invention are applicable
to chains composed of open links and closed links.
These improvements are illustrated in the drawing filed with my Provisional
Specification.
The closed links A, B, Figure 1, are of rectangular or quadrangular form.
The open links C have the form represented in Figures 2 and 3.
The transverse bars 6 of the closed links A, B are cylindrical and the longitudinal
bars are of rectangular cross-section as shown at E in Figure 1, or cylindrical with
notches in each of them, as in Figure 4, permitting their passage into the opening
of the open link.
These links may be made of any desired dimensions from steel cast, forged,
stamped or rolled, or from malleable cast iron, bronze or other suitable metal..
They may,
when it is necessary to reinforce or strengthen the chain without unduly
augmenting the weight thereof, be provided with ribs F, Figures 1 and 2, or with
lugs or other projections.
The forming of the chain or assembling of the links is effected as follows:-The
open link C being in the position indicated in Figure 2, a closed link is held
perpendicularly and in line with the opening of the open link, and is then caused to
slide into this opening until it can be turned into the position indicated at H;
another link I is then inserted in like manner, and so on until a chain of the desired
length is formed and, if necessary, until the end links are connected so as to form
an endless chain.
The links can then be separated only by imparting to them movements the
reverse of those above mentioned for hooking them together, (and even a single
link closed onto two others will allow this) which movements cannot take place
accidentally; when the chain is stretched for use the links cannot become
detached.
The longitudinal bars of the links have only to bear the stress of tension and
their cross section is calculated accordingly; the transverse bars of the links have
besides to bear the effects of wear, their cross section is, therefore, calculated in
such a manner that after the diminution of their diameter due to friction, that is
to say, after the chain has been subjected to the wear it was intended to withstand,
they will have a strength equivalent to that of the longitudinal bars, and this
diameter will not permit them to escape readily from the open link. The latter,
in order to provide for this wear, is strengthened at the part in contact.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, declare that what I
claim is :-
The improvements in chains with detachable links, characterized principally by
the special form of the links and by the method of assembling involved thereby,
substantially as described with reference to the drawing.
Dated this 26th day of March 1896
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.