IMPROVEMENTS IN CONNECTIONS FOR METAL TIE-RODS FOR ROOFS AND OTHER STRUCTURES
Year: 1884

page_text: I ROBERT HENRY EVANS, of the Britannia Iron Works, Derby, Engineer, do
hereby declare the nature of said Invention for IMPROVEMENTS IN CONNECTIONS
FOR METAL TIE-RODS FOR ROOFS AND OTHER STRUCTURES, to be as follows:-
My improvements relate to the connections for metal tie-rods for roofs and other
structures.
In performing my Invention I form screw threads at the ends of all the rods to
be connected together and I form metal stirrups in the transverse parts of which
I make holes for the rods to pass through and I secure the stirrups on the rods
by nuts.
"
When the ends of two or more rods are to be connected together I place the
open ends of the stirrups, which are formed to fit within each other, together and
unite them by passing a bolt or pin through holes which are made in the ends
of the stirrups for that purpose. In some cases I form right and left hand screw
threads on the adjoining ends of rods for adjustment.
ROBERT HENRY EVANS.
H. B. Barlow,
Agent for Applicant,
4, Mansfield Chambers,
17, St. Ann's Square, Manchester.

page_text: COMPLETE SPECIFICATION.
I ROBERT HENRY EVANS, of the Britannia Iron Works, Derby, Engineer, do,
hereby declare the nature of said Invention for IMPROVEMENTS IN CONNECTIONS
FOR METAL TIE RODS FOR ROOFS AND OTHER STRUCTURES, and in what manner
-the-same is to be performed, to be particularly described and ascertained in and
by the following-statement:-
My improvements relate to the connections for metal tie rods for roofs and other
structures.
In performing my Invention I form screw threads at the ends of all the rods to
_be.connected together and I form metal stirrups in the transverse parts of which
I make holes for the rods to pass through and I secure the stirrups on-the-rods
by nuts.
When the ends of two or more rods aro to bo. connected together I place the
open ends of the stirrups-which-are-formed to fit within each other, together and
unite them by passing a bolt or pin through holes which are made in the ends of
the stirrups for that purpose.
In some cases I form right and left hand screw threads on the ends of rods for
adjustment.
And in order that my Invention may be fully understood and readily carried into
effect I will proceed to describe the accompanying Sheet of Drawings, referenco
being had to the figures and letters marked thereon.
Figs. 1, 2 and 3 are views of a metal tie rod prepared according to my Invention
for connection to another tie rod or to any suitable part of a structure.
a is the metal tie rod with a screw thread formed on the end; b is the metal
stirrup or clip shaped to fit as closely as practicable to the square nut c'so as to
keep the latter from turning. The tie rod a passes through a holo in the transverse
portion of the stirrup band is screwed into the nut c and thus connected to the
stirrup; there are in the stirrup other holes 6 through which a metal bolt or pin
may be passed in order to secure the stirrup to another stirrup, or to other stirrups,
or to any suitable parts of a structure.
Fig. 4 is a view of a metal tie rod prepared at both ends for connection to other
tie rods or to parts of a structure.
A right hand screw thread is cut at one end of the rod a and a left hand scrow
thread at the other end to enable the length of the rod between the two stirrups b
to be adjusted by turning the rod round. Locknuts & used either with or without
washers may also be threaded or screwed upon the rod a between the stirrups as
shown, partly to strengthen the transverse portions of the stirrups b, partly for
convenience of delivery, as by this means the stirrups can be fixed at their required
distances apart and the rod and stirrups sent away from the makers ready for use
and finally to give a more finished appearance to the connection. When desirable
a locknut d with or without a washer. is similarly used for the connection
illustrated by Figs. 1, 2 and 3.

page_text: Figs. 5 and 6 are views of three metal tie rods connected together according to
my Invention.
The stirrups b secured at the ends of the three metal tie rods a are formed so as
to fit one within the other; a central bolt e on which is the bush or distance
piece f fastens all together and is secured in position by the nuts g and washers g'.
If necessary a fourth stirrup and tie rod might be connected to the other three by
means of the central bolt e.
In some cases the space occupied by the bush or distance piece f is filled by the
end of a strut or the ends of other rods or otherwise.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
1. The combination with the metal tie rod a on one or both ends of which
a scrow thread is formed of the metal stirrup b, and the nut c, the said stirrup
being so bent or formed that it will clip the said nut and keep it from turning,
substantially in the manner and for the purposes herein described and as illustrated
by the Drawings annexed.
2.-The combination with the metal tie rod a having on one end a right hand
and on the other end a left hand screw thread, of the metal stirrups and nuts c
and either with or without the locknuts d, and washers, substantially as and for
the purposes herein described and as illustrated by Fig. 4 of the Drawings.
3.-Connecting together the ends of two or more metal tie rods a, provided with
metal stirrups and nuts by a contral bolt e, substantially as described and as
illustrated by Figs. 5 and 6 of the. Drawings.