Improvements in Mechanical Milking Apparatus.
Year: 1894

page_text: Date of Application (in United Kingdom), 8th Nov., 1894
'Complete Specification Left, 8th Nov., 1894-Accepted, 8th June, 1895
Improvements in Mechanical Milking Apparatus.
I, CARL GUSTAF PATRIK DE LAVAL of 16A Handtverkaregatan Stockholm
Sweden Doctor of Philosophy and Engineer 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 :-
The invention herein described relates to an improvement in mechanical milking
apparatus, especially such which are suspended on the cow and are provided with a
plate or ring, which during the milking operation is resting against the base of the
teat, offering a resistance or "kicking" to the pull received on the teat and making
it possible for the milking devices to adjust themselves to the teat automatically.
The invention relates to a special construction for giving the milking devices the
possibility of moving easily in every direction, which movement is necessary in
order that the automatical adjustment may not be prevented by the stiffness of the
contrivance.
It is furthermore made possible by means of this special construction to influence
the four teats simultaneously but independently of each other and thus to provide
four machines, each of which operates its particular teat as may be required by the
teat in question. The four machines may conveniently be driven from a common
driving shaft.
The invention is shewn on the accompanying drawing. Fig. 1 is a part sectional
elevation of one of the milking machines, and Fig. 2 a part sectional plan of the
four machines, and Fig. 3 shows the arrangement of suspending the apparatus on
the cow.
The milking device consists in rollers a¹ in connection with a plate or ring a³,
which during the milking operation rests against the base of the teat, offering a
resistance or "kicking" to the pull received on the teat and thus automatically
adjusting the milking device to the teat.
The four milking machines extend like fingers from a vessel or framing D, which
is suspended on the cow by means of a belt or the like.
The levers E E E E which at their exterior end carry the milking rollers a¹,
extend forward between the teats of the cow and the rollers extend laterally from
the levers. The rings a³ are on the ends of levers K which are movable relatively
to the levers E' E' E³ E' as the legs of pairs of scissors.
The apparatus is thereby better protected from the movements of the cow and
does not seem to worry her.
The four levers are attached to four frames or supports o and these are placed
side by side, each revolving on its own trunnion F. Each of these trunnions F is
supported by a connecting piece s which is revoluble on a vertical or almost vertical
extension thereof forming a pivot G. These pieces s are by the pivots H attached

page_text: to the framing D, which encloses the moving mechanism for the four milking
machines, and are thus revoluble thereon.
It is apparent that the four milking machines are able within certain limits, to
move independently of each other in a vertical direction up and down (around the
trunnions F) in horizontal direction laterally (around the pis ts G) and in hori-
zontal direction forward and backward around the trunnio
possibility is given to them to adjust and to move independen
to its teat as this latter requires.
The mechanism for moving each milking device for pe.
operation may be arranged in various ways, and does not for
invention.
F and H. Thus
of each other each
Having now particularly described and ascertained the nature
tion and in what manner the same is to be performed I dec.
claim is :-
ning the milking
he subject of this
my said inven-
re that what I
1. In a mechanical milking apparatus, suspended on the cow and provided with
a plate or ring, resting during the milking operation against the base of the teat,
offering a resistance or "kicking" to the pull on the teat and attached to the one
of the arms, movable as the legs of a pair of scissors, the other arm carrying the
milking device (roller or the like), the combination of four frames or supports for
said arms, placed side by side and each pivotted on a horizontal pivot For pivots,
carried by a connecting piece s, which is pivotted on a vertical or nearly vertical
pivot G which again is pivotted on a horizontal pivot H or pivots on the main
framing D containing the driving shaft for the milking devices substantially as
and for the purpose set forth.
2. The construction of milking apparatus described and shown.
1907
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.