A New or Improved Surgical Instrument for Administering Medicine to Horses and like Animals.
Year: 1893

page_text: Date of Application, 27th July, 1893
Complete Specification Left, 27th Apr., 1894-Accepted, 2nd June, 1894
I QUYIDIONAL DOITIATION,
A New or Improved Surgical Instrument for Administering
Medicine to Horses and like Animals.
1, RALPH BROWN of 39 Marsden Street, South Shields in the County of
Durham, Horsekceper do hereby declare the nature of this invention to be as
follows:-
This invention relates to A New or Improved Surgical Instrument for
Adminstering Medicine to Horses and like Animals and has for its object to avoid
the necessity with its attendant risks of inserting the hand into the animal's mouth
when adminstering balls and like medicine.
To effect this result I use a suitably formed metallic or other tube within which
I arrange a spring-piston device the rod of the piston extending to the rear of the
tube so that it can be actuated by hand at will. When the piston is drawn back
the spring is compressed and it can be held in this position by a simple catch or
sear or trigger device arranged at the rear of the tube and adapt to be released
by hand at the required moment.
Within the tube suitable stops or their equivalent and guides may be arranged
for the proper operation of the piston spring and rod.
A simple nut on the rear end of the rod may serve as a catch against the rear
end of the tube and the release of the catch allows the piston to shoot forward and
thus eject the ball or dose into the rear of the animal's mouth, the forward end
of the tube having been first. inserted at or near the root of the tongue.
A spoon-shaped or other handle may be provided' on the tube to facilitate its
easy working.
Dated this 26th day of July 1893
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
A New or Improved Surgical Instrument for Administering .
Medicine to Horses and like Animals.
I, RALPH BROWN of 39 Marsden Street, South Shields in the County of
Durham, Horsekeeper, 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 A New or Improved Surgical Instrument for
Administering Medicine to Horses and like Animals and has for its object to avoid
the necessity with its attendant risks of inserting the hand into the animal's mouth
when administering balls and like medicine.
To effect this result I use a suitably formed metallic or other tube within which
I arrange a spring-piston device the rod of the piston extending to the rear of the
tube so that it can be actuated by hand at will. When the piston is drawn back
037

page_text: the spring is compressed and it can be held in this position by a simple catch or
sear or trigger device arranged at the rear of the tube and adapted to be released
by hand at the required moment.
Within the tube suitable stops or their equivalent and guides may be arranged
for the proper operation of the piston spring and rod.
A simple nut on the rear end of the rod may serve as a catch against the rear
end of the tube and the release of the catch allows the piston to shoot forward and
thus eject the ball or dose into the rear of the animal's mouth, the forward end of
the tube having been first inserted at or near the root of the tongue.
A spoon-shaped or other handle may be provided on the tube to facilitate its
easy working.
I will fully describe my invention with reference to the accompanying drawings
in which Figures 1 and 2 show longitudinal sectional elevations and Figure 3 a
longitudinal elevation illustrative of my invention. Figures 4 and 5 showing cross-
sections at A A and B B and in the following description like marks of reference
designate like parts.
Referring to the drawings, C is a brass or other tube within which is arranged
to work the piston with rod 7 and spring 8.
From Figures 1 and 2 which show the piston in its two positions, viz. (a) with
the spring compressed and ready to shoot the piston forward when the catch 9 is
released and (6) with the spring free and the piston shot forward and the catch
released, the apparatus will be readily understood.
The spring abuts at its inner end against a stop 10 in the tube C and the catch 9
may consist of a nut screwed onto the end of the piston rod which can travel freely
through an opening in the stop 10 aforesaid.
The spring S acts to automatically cause catch 9 to sneck itself (as shown in
Figure 1) when the piston is pushed back and when the piston is shot forward this
spring is depressed as shown in Figure 2.
The piston may be shod with rubber or other soft material to prevent any risk
of injuring the animal when it is shot forward for the purpose of depositing the
ball N in the rear of the animal's mouth.
Similarly the end of the tube C may be shod with rubber as at C. To use the
instrument press the piston back by hand until the edge of nut 9 catches against
the edge of the tube as shown in Fig. 1; then insert the ball above the piston in
the tube and having inserted the extremity of the instrument in the animal's mouth
just about the root of the tongue depress the catch.9 when the spring 8 will have
the effect of more or less moving forward the ball and of ensuring its deposition in
the rear of the animal's mouth when the operator, holding the instrument by the
handle H withdraws it.
In Figure 3 a slightly different construction is shown: In this case a spring-
trigger-device T secured to the handle H' is shown for releasing the piston and for
holding it back when the spring is compressed the block 11 on the piston rod
slides in the tube and the projection T of the spring-trigger-device T works
and subsides in a recess in the top of the block after it has been released.
:
The drawing back of the handle H' in this case effects the cocking of the
apparatus and compression of the spring by the piston (as shown in Figure 3)
against the stop 12 and the depression of the spring-trigger-device by the finger or
otherwise releases the piston to deposit the ball as above described.
The piston when shot should protrude a little beyond the end of the tube so as to
ensure that the ball will be satisfactorily released from the tube.
It will thus be seen that the apparatus has the effect of ensuring the ball being
left in the rear of the animal's mouth and immediately the piston has been released
and shot forward, the tube may be withdrawn.
The tube may be slightly bent or curved to suit the curvature of the throat or
mouth into which it is intended to be inserted and the catch and release mechanism
may obviously be modified in design without departing from the spirit of the
invention herein described.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
1. The improved instrument for administering medicine to horses and like
animals consisting in the combination with a handled-tube of a spring-piston
device arranged to be compressed or drawn in or cocked and to be held in this
position by a catch and to be released at will so as to cause the piston to shoot
forward and thus deposit the ball or medicine in the rear of the animal's mouth the
several parts being arranged combined and adapted to operate substantially as
herein set forth.
2. The combination of parts forming the improved instrument for administering
medicine to horses and like animals substantially as described and illustrated in the
accompanying drawings.
Dated this 26th day of April 1894.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.