improvements in Trusses.
Year: 1899

page_text: improvements in Trusses.
1, NILS PERSON, of Platteville, Wisconsin, U.S.A., Inventor, do hereby declare
the nature of this invention to be as follows:-
This invention relates to certain new and useful improvements in trusses of
that class in which the pad is rendered capable of automatically regulating the
pressure when once adjusted to the average pressure required; the object of the
invention being to provide improved and simplified mechanism for attaining the
requirements pertaining to trusses of the kind referred to.
In a truss of the kind to which my invention is applicable, the pad is provided
at its back with a celluloid or metal plate from which an inwardly screw-threaded
sleeve or socket penetrates into the body of the pad a suitable distance, and has
a concentrically arranged pin projecting upwardly therein. A spring is coiled
around the pin and is kept in place by means of a cap or ferrule, closed at one
end, and exteriorally threaded to engage the threads in the sleeve or socket. By
rotation of the cap.the normal tension of the spring can be regulated. A plate
is secured to the cap, and has radiating arms provided with buttons to which the
binding straps are attached.
In an alternative form, a pin--which carries the plate lastly referred to, pro-
jects from the back of the pad. A plate is arranged on the pin between the
back of the pad and the button-plate, and has radial spring-armis
which rest and bear upon the back of the pad. The normal tension of the spring.
can be regulated by screwing the supporting pin inwards or outwards to lengthen
or shorten the distance which it projects from the pad.
1000
P. R. J., WILLIS,
Agent for Applicant.
1. NILS PERSON, of Platteville, Wisconsin, U.S.A., Inventor, 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 trusses of that class used for the cure of rupture and
the like, and more particularly to the pad which is adapted to bear upon the
affected part.
The object of the invention is to provide simple and effective means whereby
an even pressure is maintained, and further, mechanism whereby the pressure

page_text: may be readily regulated to obtain the best results in various cases, as may be
required.
Reference being had to the accompanying drawings:-
Fig. 1, is a sectional side view through the pad and the adjustment mechanism
pertaining thereto
Fig. 2 is a sectional side view of an alternative form of the invention; and
Fig. 3 is a rear view thereof partly broken away.
Fig. 4 is a sectional side view of a simplified form of the invention.
The pad A is of usual construction, and is formed, at its rear, with a recess B
in which is fitted the metal socket C, preferably formed integral with the plate D.
A tube E, provided with an annular flange F is reciprocably fitted in the socket C
and is retained, therein by the plate G secured to the pad by screws H. The
tube E is outwardly screw-threaded to enter the cap I preferably formed integral
with radially projecting arms J having buttons K for the attachment of the usual
belt and supporting straps. A stud L projects from the bottom of the socket and
forms a guide for the spiral spring M in compression between the socket and the
cap I. The tendency of the spring is to force the pad outwardly, and the pres-
sure of the spring can be regulated by adjusting the cap more or less onto the
tube E which moves into the socket when pressure is applied to the pad.
In the modification shewn in Figs. 2 and 3 a curved spring M is employed
instead of the spiral spring aforementioned. A screw N, passed through the
central parts of the arms J, the spring, the plate D (which may, however, in this
form be dispensed with,) and threaded end of the socket C, serves to regulate
the tension of the spring and the pressure exerted by the pad.
The construction shewn in Fig. 4 is similar to that shewn in Fig. 1 except that
the means for adjusting the pressure of the spring is dispensed with. In this
form the arms J are secured to the tube E by means of a screw P.
21
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
A truss comprising a pad having a recess at its rear, a socket fitted in the recess,
a tube reciprocably fitted in the socket and formed with an annular flange, a
plate secured over the socket and having an aperture through which the tube
passes, a cap threaded onto the tube and having radially projecting arms fitted
with buttons, and a spiral spring arranged between the cap and the socket, all
substantially as and adapted to operate as herein set forth.
2. A truss comprising a pad having a recess at its rear, a socket fitted in the
recess and having its forward end inwardly screw-threaded, a screw fitted in the
tube and carrying a curved spring and means for attachment of the pad to a belt
and supporting straps, all substantially as and adapted to operate as herein set
forth:
3. A truss comprising a pad having a recess at its rear, a socket fitted in the
recess, a tube reciprocably arranged in the socket and formed with an annular
flange, a retaining plate secured over the socket, a spiral spring arranged within
the socket and tube, and the radially projecting arms having buttons all sub-
stantially as and adapted to operate as herein set forth.
Thated this 10th day of March 1900.
P. R. J. WILLIS.
Agent for Applicant.