An Improved Apparatus for Testing Wool.
Year: 1890

page_text: Date of Application, 24th June, 1890
Complete Specification Left, 24th Mar., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Testing Wool.
We, ERNST JAEGERMAYER, of Voeslau, near Vienna, 24, Bahnstrasse, Clerk,
and ANTON MICHEL, of Vienna, Hainburgerstrasse, No. 30, Engineer, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to improvements in apparatus for ascertaining the weight
and volume of a sample of wool under a given pressure, so as to furnish trust-
worthy data for estimating the true value, or rendement, of the wool.
In carrying our invention into effect, we provide a suitable receptacle to contain
the sample of wool to be tested.
:
The receptacle itself is supported by trunnions and a pair of standards and a
suitable detent is provided to keep it in a vertical position, as well as to allow of
its being swung out of the vertical.
Our invention does not restrict us in respect of either the cross section of the
receptacle, the material of which it is made, nor of the position of the opening
through which the sample is passed. The meter may be also so constructed that
the normal position of the receptacle may be either horizontal or oblique.
A presser-plate operated by a screw or any other suitable mechanisin is adapted
to slide axially within the receptacle, for the purpose of subjecting the sample to
the desired pressure.
A scale beam with a sliding weight on its outer and longer arm has its centre
upon one of the standards above mentioned, while its shorter one supports the
sample receptacle.
There is a counterpoise upon the longer arm adapted to balance the receptacle
and the parts attached thereto. The shorter arin carries also an index finger
adapted to travel over a scale upon the other standard.
The above arrangement of mechanism for ascertaining the weight of the
sample may be replaced by any other type of weighing mechanism known to
the arts.
To maintain the pressure exerted upon the wool, and to avoid mistakes, the nut
through which the presser-screw works is arranged adjustably in the direction of
the pressure. To this end, it is carried by a bell-lever link, and weight device,
having its fulcrum upon the receptacle, through which the effect of the said weight
is brought to bear upon the wool, the arm of the bell lever which lies over the top
of the receptacle being provided with knife edges which bear upon the nut above
mentioned, the outer end of the said arm being engaged by claws upon a bar which
is supported over the receptacle.
When the wool is to be pressed, the presser-plate is moved downwards into the
receptacle till a finger on the link of the bell-lever-link and weight mechanism
above mentioned is opposite another finger projecting from the bar last mentioned.
The volume of the sample will then be read off upon a scale provided for that
purpose, and suitably co-related with this part of our invention.
We wish it to be thoroughly understood that our invention does not confine us
to the use of the particular mo hanisms described above, but that they or any of
them may be replaced by any quivalent adapted to discharge, for the purposes of
our invention, the same functie is, respectively.
'
Dated this 24th day of June 1890.
در
1 DICUL
HILLIPS & LEIGH,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION..
An Improved Apparatus for Testing Wool.
We, ERNST JAEGERMAYER, of Voeslau, near Vienna, 24, Bahnstrasse, Clerk,
and ANTON MICHEL, of Vienna, III., Hainburgerstrasse, 30, 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 :-
This invention relates to rendement meters, .e. to apparatus for ascertaining the
weight and volume of a sample of wool under a given pressure, whereby trust-
worthy data are furnished for estimating the true value or rendement of the wool.
According to the invention, there is provided a receptacle adapted to contain the
sample of wool to be tested, which receptacle is supported by trunnions on two
standards. A nut, so arranged in the top end of the said receptacle as to be
endwise movable, is subject to constant pressure by a system of weighted levers,
and a pressure plate is secured to the lower end of a screw engaging the said nut.
One of the said standards is provided with grooves for the knife-edges of a scale
beam, the forked and shorter arm of which, upon which are the said knife edges,
projects on opposite sides of the receptacle, while the longer arm is provided with
a suitable counterpoise.
In order to make the invention perfectly understood the same is hereinafter
described with reference to the annexed drawings, in which
Fig. 1 is a front elevation of the rendement meter, shewing it as adapted to fold
into a box, which latter arrangement however may be varied as circumstances may
dictate, or the especial convenience of a particular case require.
Fig. 2 is a side elevation of the apparatus and
Fig. 3 is a plan corresponding with Fig. 2.
In Fig. it is supposed that the receptacle A is filled with wool and ready for
the weighing operation, while the receptacle as shewn in Fig. 2 is supposed to
contain in a compressed state the smallest quantity of wool which can be tested by
the apparatus,
The said receptacle is, by preference, made of sheet metal and of a cylindrical
shape. In order to admit of its being filled with the wool to be tested, and
emptied again, its lower end is closed by a hinge-jointed cover a.
The receptacle A is supported on the forked ends of standards by means of
trunnions a¹, in consequence whereof the said receptacle is adapted to swing upon
the said trunnions. Under ordinary circumstances it is kept in one fixed position
by the spring catch e, which is adapted to engage in a corresponding hole.
It will be readily understood that the receptacle A, instead of being circular in
cross section, may just as well be oval or polygonal in cross section, and that it
may be made of any suitable material, and be adapted to be charged with the
sample to be tested through either the top or the side of the said receptacle.
Further, the latter may, without departing from the scope of this invention, be
arranged horizontally or obliquely instead of vertically.
Within the receptacle A there is arranged a pressure plate intended to compress
the wool to be tested. The necessary displacements of the said pressure plate are,
by preference, obtained by means of a screw C engaged by a nut g. That the
pressure upon the wool may not be exerted by the force moving the pressure plate,
but by a constant force, the said nut is not secured to the receptacle A, but is
connected to a system of levers EF, weighted by a weight. The knife edge
fulcrums of the forked lever E are formed on the claw bearings k secured to the
bridge at the top of the receptacle A, while a nose or projection is provided on
the front side of the receptacle A for the knife edge fulcrum of the lever . The
grooves in the forks of the lever E bear on lateral projections of the nut
is movable end wise in a seat formed in the bridge h.
g which
It is obvious that the screw C, nut and weighted lever system Em F i may,

page_text: without departing from the scope of this invention, be replaced by any other
mechanism admitting of the wool being compressed not by the force working the
mechanism, but by a force having its points of resistance on the receptacle and
acting on that part of the mechanism which operates the displacement of the
pressure plate. Such a mechanism may be, for instance, a rack and wheel gear.
For ascertaining the weight of the wool contained in the receptacle A a scale
beam D is provided, the arms of which are of different lengths. It carries a
counterpoise e for balancing the weight of the receptacle, and a sliding weight.
The said scale beam D is fulcrummed to either of the standards B where a bearing
for the knife edge is provided, and the forked shorter arm of the beam carries
knife edges bearing upwardly against bearings d formed on the receptacle A.
extension of one branch of the forked arm of the beam D forms a swinging
pointer, in front of which the other standard B carries the corresponding fixed
pointer.
An
The counterpoise e balances the weight of the receptacle A, pressure plate and
screw C, so that by displacing the sliding weight the net weight of the wool
contained in the receptacle A may be directly ascertained.
Instead of a scale beam constructed and arranged in the manner described, a
plain scale beam may be used, having arms of equal length and provided with a
sliding weight or with a pan for weights. Furthermore, the receptacle A may carry
knife edges instead of the bearings d, and yokes may be used for connecting these
knife edges with those of the forked arm of the scale beam.
g
As soon as the wool to be tested has been filled into the receptacle A, the weight
of the wool can be ascertained with the aid of the beam D and sliding weight.
Afterwards, the scale beam D is taken off, and the levers E & F and the weight i
are hooked on as shewn; then the screw C is screwed home until it fully transmits
the pressure exerted on the nut by the weighted levers. This is indicated by a
pointer fixed to the rod or link m, and the corresponding fixed pointer screwed to
the bridge h. For fully ascertaining the state of equilibrium between the two
pressures acting in opposite directions on the nut g, the end of the lever Fis
repeatedly pressed down with the hand, when the pointer on the link m must
always take again its former position in front of the fixed pointer. As soon as this
condition is reached, the volume of the compressed wool is read off the scale 1.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:-
1. In an apparatus for ascertaining the weight of samples of wool and their
volume under a given pressure, the combination with a receptacle to receive the
sample, of a pressure plate or piston enclosed in the said receptacle, a mechanism
adapted to displace the said pressure plate, and a device by which a given pressure
is exerted on the part of mechanism directly acting on the pressure plate, the said
pressing device having its point of resistance on the receptacle, substantially as
described.
2. In an apparatus for ascertaining the weight of samples of wool and their
volume under a given pressure, the combination with a receptacle supported by
trunnions on two forked standards, of a scale beam adapted to be fulcrummed to
one of the standards and to lift with a forked arm the receptacle from its bearings
substantially as described.
Dated this Ral dar of March 1891
PHILLIPS & LEIGH,
22, Southampton Buildings, W.C., Agents for the Applicants.