Improvements in Devices for Clamping Together the Ends of Ropes and Cables, or the Forming of Loops in the same.
Year: 1894

page_text: Date of Application, 3rd July, 1894-Accepted, 4th Aug., 1894
COMPLETE SPECIFICATION.
Improvements in Devices for Clamping Together the Ends of Ropes
and Cables, or the Forming of Loops in the same.
A communication by JOHN ALLENSON and ALECK ADAMS, both of St. Paul, in
the County of Ramsey and State of Minnesota, United States of America,
Machinists.
1, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil 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 :-
This invention relates to improvements in rope clamps designed for the clamping
together of the ends of ropes or cables, or the forming of loops in the same.
In the accompanying drawings forming part of this Specification-
Figure 1 represents an end elevation of the clamp;
Figure 2 is a side elevation of the same with the rope loop shown in place
therein, and
Figure 3 is a central longitudinal section of one member of the clamp.
In the drawings, the clamp is shown made up of the members A and B formed
preferably of cast iron, each provided with lateral ears 2 and 3, having openings
through which are passed the bolts 4, having the nuts 5. The member A has a
central external rib 6 between the bolt holes which prevents the bolt heads 7
turning while the nuts are being tightened. The member A is formed with a
longitudinal groove 8, its bottom being longitudinally arched or convex, as shown
in Figure 3, and the central portion having diagonal transverse grooves 9 to grip
the rope more firmly. At each end of the member A are the lugs 10 which are
preferably of greater length than the thickness of the rope to be clamped. The
member B is formed with a similar arched or longitudinally convex groove 11,
having transverse grooves, and is also provided with centrally arranged lugs 12,
ou each side of the groove, (see Figure 2). These lugs are so arranged as to
fit between the lugs 10 of the other member of the clamp.
In use, the two ends or parts 13 and 14 of the rope are placed in the groove of
the member A, superposed one upon the other, and the clamp member B placed
over the same as shown in Figure 2. The bolts being then inserted and the nuts
screwed down, the ropes are tightly clamped. The arched form of the bottom of
the grooves gives a central pressure and allows a slight play between the ropes at
the ends of the clamp and thus prevents danger of breaking the clamp.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondents, I declare that what I claim is :-
1. In a rope clamp, the combination of the pair of blocks each having a groove
to receive the rope, both grooves being similarly arched in longitudinal section, and
the bolts for clamping said blocks, substantially as described.
2. In a rope clamp, the combination of the pair of blocks each having projecting
lugs to engage the other, and a groove to receive the rope, arched in longitudinal
section and the securing bolts passing through cars upon said blocks, substantially
as described.
3. In a rope clamp, the combination of the pair of blocks, having grooves to

page_text: receive the rope arched in longitudinal section, and provided with diagonal
corrugatious or grooves, substantially as described.
4. In a rope clamp, the combination of the clamp members, each having longi-
tudinal grooves to receive the rope, end lugs upon one member serving as the walls
of said groove, central lugs upon the other member forming the walls of its groove,
and adapted to fit between the end lugs of the opposite member, and the bolts
passing through both said members, substantially as described.
5. In a clamp of the class described, the combination of the clamp members
having longitudinal grooves to receive the rope, the bottom of said grooves being
convex longitudinally, the end lugs upon one member forming its side walls, and
the central lugs upon the other member forming the side walls of its groove and
fitting between the end lugs of the other member, and the bolts for securing said
members together substantially as described.
Dated this 2nd day of July 1894.
WM. P. THOMPSON & Co.,
Agents.