Improvements in Apparatus for Examining the Condition of the Heart, Lungs, and other Parts of the Body.
Year: 1897

page_text: Improvements in Apparatus for Examining the Condition of the
Heart, Lungs, and other Parts of the Body.
I, DANIEL BRAND MARSH, of Blackheath, in the County of Wentworth, in the
Province of Ontario, Dominion of Canada, Clergyman, do hereby declare the nature
of this invention to be as follows:-
•
The invention relates to a very useful, handy, effective and sensitive instrument
for testing the condition of the heart, lungs and other parts of the body,
which can be done conveniently and correctly without removing the clothing of
the person examined.
The invention consists in a circular metallic disc plain on the outside and the
interior concave or saucer shaped on the bottom, and provided with a screw threaded
edge. A diaphragm of thin sheet gutta percha, mica, or equivalent material is cut
to the outer shape of the disc and laid thereon and fastened thereto by a screw
bezel or ring, a hole being made through the centre of the disc to receive a small
pendant or extension which is hollowed out on its inner side to complete the saucer
shape of the disc.
To the inside of the disc is secured a thin steel plate which serves as a vibrator,
and also to hold at its free end a small saucer-shaped plate corresponding to the
saucer completed by the extension when applied to the disc.
The purpose of the plate is to receive vibrations from the diaphragm, the said
saucer plate throwing the vibrations from the inside of the saucer plate towards the
inside of the disc from whence they are conveyed by a rubber tube to a three-way
branch to which two other rubber tubes are attached terminating in guttapercha ear
tips for inserting in the ears of the operator.
In carrying out my invention I take a metallic disc which may be of brass or
other metal having an opening in its central portion, and its interior hollowed out
or slightly concaved towards the central opening. The outer top edge of the disc
is preferably bevelled outwards so that when the diaphragm is laid flat upon it, it
becomes slightly raised towards the centre when a circular, threaded bezel ring is
screwed down upon it. A small tube extension, enlarged at the upper end and
concaved to complete the concavity of the disc is inserted and fitted into the central
opening of the disc, a rubber tube being attached to the outer end of the tubular
extension and a branch inserted in the said tube into the arms of which, two-rubber
tubes are secured, these tubes having ear tips attached to their extremities.

page_text: The diaphragm is provided with a central circular inward projection for securing
a projecting localizer which is made of solid gutta percha or ebony and is threaded
at its small end and screwed into the said diaphragm prepared for it, and is for the
purpose of making more specific and detailed examinations. A thin vibrating plate
is secured to the interior of the disc, by a small pin or screw.
On the outer end of the said vibrator is attached a small convex plate which lies
with its concave surface over the concave opening in the disc extension. The
vibrator receives the vibrations from the diaphragm and the plate throws the vibra-
tions to a focus in the centre of the extension the vibrations being transferred to
the ears of the operator by the ear tubes.
The operation of the apparatus in practice is as follows:-
-
In examining a patient for a general examination the first thing the operator
does is to place the ear tips of the rubber tubes in his ears, the instrument provided
with the diaphragm being placed over the supposed affected part of the body
without removing the clothing, then the disc extension is placed in the central
opening of the disc the rubber tubes being attached thereto, when the action of the
heart, and lungs or part of the body examined can be distinctly heard by the
operator.
The loudness of the beats of the heart and respiration of the lungs can be dis-
tinctly heard, thus affording a physician the opportunity of learning the condition
of the heart, lungs, and stomach or any portion of the body.
For a more specific examination, say of the lungs or the heart, and to localize
any particular portion, the localizer is attached to the diaphragm, and the large
end of said localizer is placed over the part to be examined, and is moved from place
to place as desired until the diseased portion is found, which is determined by the
sounds indicated through the ear tubes..
Dated this 4th day of March 1897
BOULT & WADE,
Agents for the Applicant.
Improvements in Apparatus for Examining the Condition of the
Heart, Lungs, and other Parts of the Body.
I, DANIEL BRAND MARSH, of Blackheath, in the County of Wentworth, in the
Province of Ontario, Dominion of Canada, Clergyman, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
The invention relates to a very useful, handy, effective and sensitive instrument
for testing the condition of the lungs, heart etc., which can be done conveniently
and correctly without removing the clothing of the person operated upon.
י
The invention consists in a circular metallic disc plain on the outside and the
interior concave or saucer shaped on the bottom, and provided with a threaded
edge; a diaphragm of thin sheet gutta percha, mica or equivalent material is cut
to the shape of the disc and laid thereon and fastened thereto by a screw bezel or
ring a hole is made through the centre of the disc to receive a small pendant or
extension which is hollowed out in the inner side to complete the saucer shape of
the disc.
To the under side of the disc is secured a thin steel plate which serves as a
vibrator, also to hold a small saucer shaped plate corresponding to the saucer com-
pleted by the pendant or extension when applied to the disc. The purpose of the
plate is to receive vibrations from the diaphragm, the said saucer plate being

page_text: fastened to the vibrator, and throws the vibrations from the inside of the saucer
plate towards the inside of the corresponding one on the disc and being conveyed
by a rubber tube to a branch to which two: rubber tubes are attached terminating
in ear gutta percha tips for inserting in the ears of. the operator.
By reference to the drawing forming part of this Specification it will be seen that.
Figure 1 represents a side view of the instrument.
Figure 2 represents a plan or top view of the disc with diaphragm removed.
Figure 3 represents a plan view of the diaphragm detached.
Figure, 4 represents an edge view of the diaphragm detached from the disc.
Figure 5 represents a similar view of the diaphragm showing its form in cross
section when secured on the disc.
Figure 6 represents a side view of the localizer detached.
Figure 7 represents the localizer attached to the diaphragm on the disc.
Figure 8 represents a side elevation of the extension detached from the under
side of the disc.
Figure 9 represents a plan or top view of the vibrator and small saucer shaped
plate attached thereto.
.
A represents a metallic disc which may be of brass or other metal having an
opening in its central portion and its interior bottom hollowed out or slightly.
concaved towards the central opening b as shown in Figure 1. The outer top edge
of the dise A is preferably bevelled outwards at a so that when the diaphragm B
which is laid flat upon it, becomes slightly raised towards the centre when the-
circular threaded bezel ring is screwed down upon it. C is a small tube extension
enlarged at its upper end, concaved to complete the concavity of the disc and made
to be inserted and fit into the bottom opening 6 of the said. disc, which, when in
that position, a rubber tube 1) is attached to it, and a branch E inserted in the
said tube D into the arms of which two rubber tubes D¹ Dª are secured, the bottom
of the tubes having ear tips e, e, attached.
I employ a diaphragm as at B, Figure 4 having a central circular projec-
tion for, holding a projecting localizer g, (shown detached in Figure 6)
which is made of solid gutta percha or ebony, is threaded at its small
end and screwed into the said diaphragm prepared for it, and is for
the purpose of making more specific examinations. h is a thin vibrat-
ing plate secured to the interior of the disc by a small pin or screw 2.
On the outer end of the said vibrator is attached a small convex plate j, which is
made to hang over the concave opening in the disc extension C, the vibrator h,
receives the vibrations from the diaphragm B, and the convex shaped plate j, throws
the vibrations to a focus in the centre of the extension C, whence they are trans-
mitted to the ears of the operator by the tubes D, D¹, D².
The operation of the apparatus in practice is as follows:-
In examining a patient for a general examination the first thing the operator
does is to place the ear tips e e, of the rubber tubes in his cars, the instrument
provided with diaphragm B, Figure 5, is placed over the supposed affected portion.
of the body without removing the clothing, then the disc extension C is placed in
the opening of the disc A, the rubber tubes being attached thereto, when the
action of the heart and lungs or part of the body examined can be distinctly heard
by the operator.
The loudness of the beats of the heart and respiration of the lungs can be distinctly
heard thus affording a physician the opportunity of learning the condition of the
heart, lungs and stomach to some extent, or any portion of the body.
For a more specific examination, say of the lungs or the heart, and to localize
any particular diseased portion, the localizer g is attached to the diaphragm and
the large end of said localizer is placed over the supposed seat of trouble or derange-
ment and is moved from place to place until the diseased portion is found, which is
determined by the sounds indicated through the ear tubes.
Having now particularly described and ascertained the nature of the said

page_text: invention and in what manner the same is to be performed I declare that what I.
claim is:-
1. Apparatus for examining the condition of the heart, lungs, and other parts of
the body comprising a circular metallic disc concave on its inner surface provided
with a central opening, a disc extension also concaved at its inner mouth to corre-
spond to the concavity of the disc, a flange formed on the upper edge of the disc,
having an outwardly bevelled edge, a diaphragm made to rest on said flange, and
slightly convexed and held in that position, by a ring screwed down over the edge
of the diaphragm and flange, the disc extension being connected to the ear tips by
rubber tubes, substantially as described.
2. In combination with a disc A a vibrating plate as h, attached to the inner
surface of the disc, and having at its outer end a convex shaped plate as j to transmit
and focus vibrations from the diaphragm B to the disc extension and ear tips
substantially as described.
3. In combination with a disc A and its accessories, the projection F, on the
diaphragm B, substantially as and for the purpose described.
4. In combination with a disc A, and diaphragm B a disc extension as C, con-
structed concave at its large end, conforming to the concavity of the interior surface
of the disc and made to fit in the opening of said disc substantially as and for the
purpose described.
5. In combination with the 'disc and diaphragm a localizer g made secure to the
centre of the diaphragm, substantially as and for the purpose described.
6. The combination of a disc A having a bevelled flange on its upper edge,
diaphragm B, vibrator h, and plate j, attached thereto, disc extension C, bezel ring
securing the diaphragm to the disc, rubber tube D and branches attached thereto,
all constructed substantially as and for the purpose specified.
Dated this 25th day of November 1897.