A NEW IMPROVED PORTABLE KNEADING MACHINE FOR BAKERY OR ANY KIND OF OTHER MATERIALS WORKED BY HAND."
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Louis Probst at the Office of the
Commissioners of Patents on the 13th December 1878.
LOUIS PROBST, of No. 3bis, Rue Bleue, Paris, in the Republic of France,
Gentleman. "A NEW IMPROVED PORTABLE KNEADING MACHINE FOR BAKERY OR
ANY KIND OF OTHER MATERIALS WORKED BY HAND."
My Invention relates to a portable kneading or mixing machine of very simple
construction, and which may be easily worked by hand.
It is composed of a wooden frame carrying the box, chest, or trough, in which
the dough is made, and the inner mechanism set in motion by means of a crank on
a fly wheel carried by the shaft of the toothed gearing. The chest or receptacle in
which the dough is mixed is cylindrical at its lower part, and the bottom opens
in two parts by the aid of levers and hinges suitably arranged, for the purpose of
letting the dough when properly prepared fall upon a lower moveable box or
receiver supported upon wheels like a barrow to facilitate removal. The inner
mechanism is composed of two horizontal shafts carrying blades helically arranged,
and working reversely the one to the other. The shafts are provided with knives
rubbing or scraping against the sides of the chest to remove the dough and prevent
its adhering thereto; they are set in motion by means of a small driving shaft
placed outside and fixed to the kneader; this shaft is provided on one side with a
sinall pinion which drives a toothed wheel on one of the blades, kneading or mixing
shafts. The other side of this outside shaft is provided with a small fly wheel with
crank which serves to drive the machine.
The other blade or mixing shaft is set in motion by the first by means of two
toothed wheels of equal size placed at the other end of said shafts. These toothed
wheels cause the shafts carrying the kneading blades to turn in opposite directions
and at the same speed.
The moveable bottom composed of two parts hinged together is of a cylindrical
shape, it comes or abuts and hermetically closes against a shelving ridge or saddle
in the centre and in the bottom of the chest of the kneading machine. These two
separate cylindrical sides open and close upon the hinges with which they are
TD 21

page_text: provided by means of special levers forming hinges, and fixed upon the lower
crosspieces of the frame. These special levers are provided with small moveable
friction rollers giving the pressure required for hermetically closing the moveable
bottoms against the shelving ridge or saddle above mentioned.
By the aid of this improved kneading machine trituration or mixing of the dough
for bread becomes almost a mathematical calculation. The yeast or leaven dilutes
with great facility, and after this first operation the quantity of flour and water
required to fill the kneader is poured in, the fly wheel being then set, turning for
35 minutes, a perfectly homogeneous paste or dough will be obtained kneaded in
the best manner. This work done the moveable bottoms are opened by the aid of
the special levers, and the dough falls of itself into the little carriage placed beneath
for this purpose, and is thus deliverd to the workmen who weigh it and shape it
into loaves.
To sum up The portable kneading or mixing machine above described worked
by hand meets every requirement, whether for bakers or military or private use; it
may be of small dimensions, not occupying more than a square yard; it is strong,
very portable, and of light weight; it perfectly triturates or mixes the dough, giving
a better result than now obtained; it is very clean, gives a saving of labour, and
will prove a formidable weapon against a strike of journeymen bakers. Further, it
will be found indispensable and absolutely necessary for an army or a regiment
campaigning, especially where food is obtained with difficulty, and journeymen
bakers rare.
It will be understood that I may make my improved portable
kneading machines of any dimensions, according to requirement and the quantity
of dough required, and that I may increase or lessen the number of the mixing or
kneading blades as may be desired or required, the principle of construction always
remaining the same.
Dough for biscuit making may be made equally well with an increase of driving
power. My improved kneading or mixing machine may also be used to triturate
or knead or mix all kinds of matters other than flour, such as clay for brick making,
mixing mortar, ochre, coal dust, &c., &c.