Year: 1886

page_text: I, FRIEDRICH TER WELP of 70 Alexanderstrasse Berlin in the Empire of
Germany Coppersmith, 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 improvements in washing machines and has for its
object a certain combination of parts by which a better effect and great advantage
is produced than heretofore has been the case in washing machines known
heretofore.
The combination which is regarded as novel and patentable, consists in the
employment of a washing vessel mounted and rotated in an inclined position as
well as in the employment of corrugated vessel surfaces.
By this combination a much better action for washing domestic articles, is
obtained than that produced by machines in which the washing drums are rotated
concentrically, and which are provided with projections and corrugations.
By the last named machines the articles are turned over during the rotation of
the drum by gliding off the corrugations or projections, but no rubbing of the
articles takes place by the corrugated surface of the drum, which in my invention
is attained by a longitudinal gliding of the article in the direction of the drum
Burface.
And in order that my invention may be better understood I have caused to be
appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a front elevation.
Fig. 2 is an end view showing the drum removed & Fig. 3. a cross section of the
latter.
The longitudinal motion of the articles to he washed on the corrugated surface
of the drum, is obtained in the simplest manner by arranging the trunnions c & c¹
eccentrically crosswise on the drum A.
The articles to be washed are turned over during the rotation of the washing
drum A, and slide along the corrugated surface of the drum, whereby the articles
to be washed undergo a rubbing action, attained by means of the corrugated drum
surface.
It will be understood that the corrugations of the latter may be made of
different shapes.
Figa 1 & 3 show the corrugations formed in a longitudinal direction to the
geometrical axle, or they may be formed inclined, vertical or spiral to the same.
The washing drum A is provided with a cover d which can be easily and readily
removed, the opposite part thereof being counterbalanced by the weight g.
The trunnions c & c¹ arranged cross wise serve also for the inlet of steam and
water (on the left hand side) and for running off or rinsing purposes, etc. (on the
right hand side).

page_text: To ensure an easy running of the cylinder, the trunnions c and c¹ may be arranged
to run on anti-friction rollers.
In order to leave the trunnions. free from obstructions, for the entrance and
discharge of the water, steam, etc, a suitable wheel gearing for transmitting power,
will be employed.
A cylindrical & corrugated washing drum is found the most suitable form for
this purpose, but in place of such, any other form of washing vessel may be used,
for instance, a three, or four-cornered one, or of an oval or conical form etc. etc.
The amount of inclination of the axis of rotation to the geometrical axle, that is
to say, the inclined position of the washing drum, as well as the length & diameter,
the size of the corrugations, and revolutions, etc, of the same; are depending upon
each other, and are to be ascertained by tests or calculations, to make the machine
most effective.
To ensure a good rinsing of the articles under operation I arrange near each end
of the drum A, an annular casing K which on its inner side is formed with an
annular opening o, into which passes the ends of one or more outlet pipes k, k of
the cylinder A.
The outlet pipes are provided with suitable cut-off arrangements, (cock valve
etc) whereby the passage of the liquid can be regulated as required.
The water, etc, necessary for washing enters through the trunnions c, c¹. By the
described arrangement and when the machine is at work an intermittent rinsing
takes place each time when the outlet pipe k reaches its lowest position.
The water left is then obliged to run along, again, the whole of the drum
surface, & to remain in contact with the articles to be washed until the opposite
outlet pipe k has taken up its lowest position, and a part of the water is allowed to
run out again.
By the described cut-off means, more or less water may be permitted to enter
the cylinder A to obtain an accordingly strong rinsing.
The annular casings K K, may be arranged near each end of the washing drum A
as shown in the drawing, or only one end may be used.
A spreading of the rinsing water is entirely prevented by the described
arrangement as the water is received by the casing K. during the whole of the
rotation.
Having now described and ascertained the nature of this invention and in what
manner the same is to be performed I declare that what I claim, is :—
In washing machines,
1st The combination of a rotating, corrugated, washing surface A, with trunnions
fixed cross wise, for the purpose of giving the articles to be washed, an axial,
longitudinal sliding, which subjects the article to be washed, to a rubbing action,
as well as to cause, during the rotation of the washing vessel, a turning over of the
article to be washed, as set forth.
2nd The combination of the stationary annular casing K with the washing
drum A, rotated eccentrically and being provided with the outlet pipes K, for the
purpose of an intermittent rinsing of the drum-contents, as set forth.
1 1
001
1
2
1000
Dated
20th day
T
January 1996.
Pro FRIEDRICH TER. WELP,
Bosshardt & Grant,
Agents to the Applicant.