Improvements in and relating to Milking Devices.
Year: 1891

page_text: Date of Application, 18th June, 1891
Complete Specification Left, 17th Mar., 1892-Accepted, 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Milking Devices.
I, JOHN GRAY, of 65 George Street, Stranraer, Wigtownshire, Dairy Implement
Manufacturer, do hereby declare the nature of my invention to be as follows:-
This invention has reference to and comprises improvements in the construction
of the teat cups or horns used for milking cows or other animals, and the improve-
ments essentially consist in forming or fitting a light close bag or tongue of thin
india-rubber or other equivalent elastic or flexible airtight material round the
whole or part of the interior surface of the horn or cup up near the root or socket
part where it is made air-tight to the udder or root of the teat quite above the
point and orifice of the teat. A small tube or opening is formed through the cup
or teat into the interior of this close bag or tongue, all so that when the suction
comes on the tube attached to the cup or horn connected with the vacuum or milk
chamber, 'the suction or partial vacuum formed within the cup will in 'addition to
sucking the milk from the teat draw the surface of the bag close to the teat by the
influx of air to the bag through the tube, and therefore besides making the teat
more air-tight with the interior surface of the cup or horn, give the action of the
tongue of the calf 'on' the root or side of the teat for the more perfect eduction of
the milk into the cup or horn. Or otherwise in some cases the external 'tube
connected to this new close internal bag or tongue, might be connected by a small
rubber or, flexible tube to the forcing side of the pump, and so inflate the bag or
tongue with the compressed air, instead of by the suction or partial vacuum from
within, and in this case produce the action on the teat and inflation of the bag by
each pulsation of the pump, and assist the eduction of the milk from the teat as
ore explained. This new inflated bag or tongue would be applied to the interior
of any of the ordinary teat cups or horns, whether fitted with india-rubber ferrules
or not for making these air-tight to the root of the teat and udder, but when ferrules
are used they would preferably be rigidly attached by wire or otherwise and jointed
air-tight to the outside of the vacuum cup or horn.
before
*** Deted the 17th Inne 1891.
EX
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Milking Devices.
་
I, JOHN GRAY of 65 George Street, Stranraer, Wigtownshire, Dairy Implement
Manufacturer, do hereby declare the nature of my invention and, in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement in writing, that is to say :-
This invention has reference to and comprises improvements in the construction
of teat cups or horns and devices used in combination therewith for milking cows
other like animals.
T
TAAT
14.
15
711
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto

page_text: appended an explanatory sheet of drawings, in which the same reference letters are
used to indicate corresponding parts in all the figures where shown.
Figure 1 is an elevation partly in section of a teat cup preferably made of horn,
celluloid, indiarubber, or other transparent or flexible material and as fitted in
accordance with my improvements with a pulsating bag or tongue in communication
with the atmosphere.
Figure 2 is a similar view to Figure 1 in which two pulsating bags or tongues
are shown as fitted in the teat cup, one being in communication with the atmosphere,
and the other leading by a pipe to a pulsating pump or other pressure organ.
Figure 3 is a plan view corresponding to Figures 1 and 2, showing the india-
rubber or elastic diaphragm of the cup which surrounds the roots of each
teat. And
Figure 4 is an external view of a teat cup A showing its preferable formation
when made of metal.
Referring to these drawings. The improvements essentially consist in forming
or fitting a light close bag or tongue a, as shown in Figure 1, or two of these a a¹,
as in Figure 2, of thin india-rubber or other equivalent elastic or flexible air-tight
material round the whole or part of the interior surface of the horn or cup A up
near the root or socket part b where it is made air-tight to the udder or root of
the teat quite above the point and orifice of the teat. Å small tube or opening all
is inserted or formed through the cup or teat holder A into the interior of this
close bag or tongue a, all so that when the suction comes on the tube attached to
the outlet end A₁ of the cup or horn A connected with the vacuum or milk
chamber, the suction or partial vacuum formed within the cup A will in addition
to sucking the milk from the teat, draw the surface of the bag a close to the teat
by the influx of air to the bag through the tube or branch all and therefore besides
making the teat more air-tight with the interior surface of the cup or horn A give
the action of the tongue of the calf, or the hands of persons milking cows on the
root or side of the teat for the more perfect eduction of the milk into the cup or
horn A when the vacuum is a pulsating one. Or otherwise in some cases as shown
in Figure 2 the external communicating tube a¹¹ connected to this new close internal
bag or tongue a might be connected at c¹ by a small rubber or flexible tube c to
the forcing side of the pulsating pump, or a separate air pump, and so inflate the
bag or tongue a¹ with the compressed air, instead of by the suction or partial
vacuum from within, and in this case produce the action on the teat and inflation
of the bag a¹ by each pulsation of the pump, and assist the eduction of the milk
from the teat as before explained. This new inflated bag or tongue a or a¹ could
be applied to the interior of any of the ordinary teat cups or horns, whether fitted
with india-rubber ferrules B 6 or not for making these air-tight to the root of the
teat and udder, but when ferrules are used they would preferably be rigidly
attached by wire B¹ or otherwise and jointed air-tight over and round the root or
socket diaphragm 6 to the outside of the vacuum cup or horn A, the teat being
inserted down through the hole in the elastic diaphragm 6 and kept perfectly
air-tight. The tube a" which passes through an aperture in the side of the cup A
is held by a round or flanged head within the flexible bag a or a¹ and retains the
latter in position within the cup A, while the tube all is held in position outside
the cup A by an india-rubber or elastic washer a², the removing of which will
enable the tube a¹¹ and bag a or a¹ to be lifted out of the cup A.
Having now particularly ascertained the nature of my said invention and in
what manner the same is to be performed I declare that I wish it to be understood
that I am aware that it has been previously proposed to make teat-cups in which
flexible material is caused to produce an intermittent pressure on the teat, and in
particular I am aware of the Specification of Letters Patent granted to Alexander
Shiels & William Elliot No. 9547 A.D. 1891, and I lay no claim to anything
described and claimed therein; but what I claim is.
First. In teat cups or holders for cows or like animals the fitting and use of an

page_text: internal indiarubber or flexible bag or bags or equivalent organs with a connecting
tube or branch to the atmosphere, to produce a pulsating or sucking action on the
teats, substantially as herein described in reference to and by way of application
showing in the accompanying drawings.
Second. In teat cups or holders for cows or like animals, the fitting and use of
an internal india-rubber or flexible bag or bags or equivalent organs with a
connecting tube or tubes leading to a pulsating or pressure pump or vessel to
produce a pulsating action on the teats, substantially as herein described in reference
to and by way of application shown in the accompanying drawings.
Third. In teat cups or holders for cows or like animals, the fitting of an
india-rubber or flexible bag or bags or equivalent organs, in combination with an
air-tight flexible diaphragm or socket part round the teat, substantially as herein
described, in reference to and shown in the accompanying drawings.
Fourth. In a mechanical system of milking cows and other like animals the
method of producing a pulsating or sucking action on the teats, consisting in
producing a pulsating vacuum within the teat cups or holders, in combination with
a pulsating or sucking action round the teats produced by a vacuum or air pressure,
substantially as herein described.
Dated the 16th March 1800
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.