A MECHANICAL KNEADING TROUGH
Year: 1875

page_text: LETTERS PATENT to Christian Heinz, of 7, Rue de la Tour d'Auvergne,
at Paris, Baker, for the Invention of "A MECHANICAL KNEADING
TROUGH."
Sealed the 6th December 1875, and dated the 5th July 1875.
PROVISIONAL SPECIFICATION left by the said Christian Heinz at
the Office of the Commissioners of Patents, with his Petition, on
the 5th July 1875.
I, CHRISTIAN HEINZ, of 7, Rue de la Tour d'Auvergno, at Paris,
Baker, do hereby declare the nature of the said Invention for "A
MECHANICAL KNEADING TROUGH," to be as follows:-
This Invention relates to an improved apparatus for kneading dough,
wherein a scoop or kneading implement working in the kneading
trough is capable of having three different kinds of motion imparted to
it by means of two sets of triple cams made to act thereon consecutively,
whereby it is made to perform three different operations, namely, firstly,
to cut or separate the dough; secondly, to stir it together; and, thirdly,
to impregnate it with air. For this purpose the scoop is fixed to the

page_text: lower ends of a pair of vertical bars that are connected at their lower
ends to a horizontal link or rod rocking in bearings in the framing of
the machine. At their upper ends the bars are connected by other
horizontal links to the upper ends of two vertical levers fixed on a shaft
carried by the framing. In the middle of this shaft between the two
levers is fixed a third lever, which is made to bear with a roller against
one or other of three cams on a revolving shaft. This shaft can be
moved endways, as will be presently described, so as to bring either one
of the three differently shaped cams in contact with the lever, and
according as the one or other of the cams is made to act upon the said
lever a different description of horizontal motion is imparted to the
scoop. The lever is kept against the cams by means of a weight attached
to a cord passing over a pulley, and connected to the side levers. At
the same time a vertical motion is imparted to the scoop by means of a
horizontal lever pivotted at one end to the framing, while the other end 1
bears against the under side of a roller on a spindle connecting the
upper ends of the vertical bars to which the scoop is attached, the said
lever receiving a vertical rocking motion so as to raise and lower the
scoop in the trough by means of one or other of three differently shaped
cams on a rotating shaft carried by the framing. This shaft, like that a
before described, is capable of being shifted endways, so as to bring
either one of the three cams to act upon the said horizontal lever,
whereby three different kinds of vertical motion can be imparted to the
scoop. The two cam shafts are geared together by spur wheels, and
they are rotated by a spur pinion in gear with the one spur wheel, on the 2
same shaft with which pinion is a fly wheel and crank handle for turning
it by hand.
For shifting the two cam shafts simultaneously endways, so as to
bring one or other of the three pairs of cams to act upon the scoop, as
before described, the projecting ends of the shafts have circular racks 8
formed thereon, in gear with which are two pinions on one and the
same spindle, so that by rotating the latter by means of a hand wheel
fixed thereon the pinions are made to move the two shafts simultaneously

page_text: In place of the first before-mentioned set of three cams I sometimes
employ a single excentric, the strap of which is connected to the before-
mentioned lever for imparting the horizontal motion to the scoop, which
in this case only has its vertical motion varied by the action of the other
set of cams.
L
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Christian Heinz in the Great Seal Patent Office
on the 3rd January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHRISTIAN
HEINZ, of 7, Rue de la Tour d'Auvergne, at Paris, Baker, send
greeting.
'
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of July, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Christian Heinz, Her special license
that I, the said Christian Heinz, my executors, administrators, and
assigns, or such others, as I, the said Christian Heinz, my executors,
administrators, and assigns, should: at any time, agree with, and
no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for:" A MECHANICAL
KNEADING TROUGH," upon the condition (amongst others) that I, the said
Christian Heinz, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, should
particularly describe and ascertain the nature of the said Invention;
and in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
:
i
NOW KNOW YE, that I, the said Christian Heinz, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly. described and ascertained in and by the
following statement thereof, reference- being had to the accompanying.

page_text: Sheet of Drawings and to the figures and letters marked thereon, that is
to say :-
This Invention relates to an improved apparatus for kneading dough,
wherein a scoop or kneading implement working in the kneading
trough is capable of having three different kinds of motion imparted to
it by means of two sets of triple cams made to act thereon consecutively,
whereby it is made to perform three different operations, namely, firstly,
to cut or separate the dough; secondly, to stir it together; and, thirdly,
to impregnate it with air. For this purpose the scoop is fixed to the
lower ends of a pair of vertical bars that are connected at their lower
ends to a horizontal link or rod rocking in bearings in the framing of
tho machine. At their upper ends the bars are connected by other
horizontal links to the upper ends of two vertical levers fixed on a shaft
carried by the framing. In the middle of this shaft between the two
levers is fixed a third lever, which is made to bear with a roller against
one or other of three cams on a revolving shaft. This shaft can be
moved endways, as will be presently described, so as to bring either one
of the three differently shaped cams in contact with the lever, and
according as one or other of the cams is made to act upon the said lever
a different description of horizontal motion is imparted to the scoop.
The lever is kept against the cams by means of a weight attached to a
cord passing over a pulley, and connected to the side levers. At the
same time a vertical motion is imparted to the scoop by means of a
horizontal lever pivotted at one end to the framing, while the other end
bears against the under side of a roller on a spindle connecting the
upper ends of the vertical bars to which the scoop is attached, the said
lever receiving a vertical rocking motion so as to raise and lower the scoop
in the trough by means of one or other of three differently shaped cams
on a rotating shaft carried by the framing. This shaft, like that before
described, is capable of being shifted endways so as to bring any one of
the three cams to act upon the said horizontal lever, whereby three
different kinds of vertical motion can be imparted to the scoop. The
two cam shafts are geared together by spur wheels, and they are rotated
by a spur pinion in gear with the one spur wheel, on the same shaft
with which pinion is a fly wheel and crank handle for turning it by
hand.
Ton shifting the A
المحلى

page_text: before described, the projecting ends of the shafts have circular racks
formed thereon, in gear with which are two pinions on one and the same
spindle, so that by rotating the latter by means of a hand wheel fixed
thercon the pinions are made to move the two shafts simultaneously
endways. The horizontal levers upon which the cams act are raised
from off these when they have to be shifted by means of a strap attached
to the one lever, and passed round a sheave on a shaft, which can be
rotated by a hand wheel, so as to wind up the strap and thus raise tho
levers.
In place of the first before-mentioned set of three cams I sometimes
employ a single eccentric, the strap of which is connected to the before-
mentioned lever for imparting the horizontal motion to the scoop, which
in this case only has its vertical motion varied by the action of the other
set of came
Fig. 1 shews a part front clevation partly in section on linc a, b, Fig. 2,
of my before described improved kneading apparatus; Fig. 2 shews an
end elevation; and Fig. 3 shews a part transverse section.
The trough or receptacle for the dough consists of two checks A, A,
secured together by rods B, and having each a groove on the inner face,
in which is secured the curved sheet metal plate O. Tho kneading
mechanism consists of three frames D, secured together by the transverse
frames E and bolts E¹, and carrying the shafts F, F, G, G', H., I., J.
The shafts F, F¹, are rotated by the toothed wheels K, K¹, actuated by
the pinion K rotated by the winch handle M fixed on the fly wheel M',
which together with the pinion K" is mounted on the shaft L. The
shaft F carries a triple cam N, N', N", which actuates through an anti-
friction roller 9 a lever O mounted on the shaft G. The shaft F¹ carries
a triple cam P, P¹, P", which actuates the levers Q mounted on the
shaft G through the roller q mounted on the short lever Q', also fixed
on the shaft G. The levers Q impart through the connecting rods Ra
horizontal rocking motion to the upper end of the bar S, which at the
same time receives an up-and-down motion from the end of the lever O
bearing on the under side of the roller & carried by S, and the combi-
nation of these two motions produces in the scoop or kneading implc-
ment T fixed on S the requisite motions for consecutively cutting,

page_text: i
stirring, and aerating the dough contained in the trough, according. as
the cams N and P or N¹, P¹, or N" and P" are brought into action, this
being effected by an endways motion of the shafts F, F, as will be
presently described. The shaft H carries two levers H¹, which are
connected at H to the bar S, thus serving both as a fulcrum and guide
to the latter. The shaft I carries a pulley, over which passes a cord
secured to a weight serving to draw the levers Q, Q', backwards against
the cams P, P¹,.P", as these recede. The shaft J carries a fly wheel V,
by means of which the system of levers is raised up when it is desired to
shift the cams, a strap being for this purpose attached at one end to a
transverse bar t connected to the levers H', and at the other end to the
shaft J.
The shifting of the cams is effected by the fly wheel M" mounted on
the shaft u carried by the supports U, and having at its ends toothed
pinions gearing with circular rack teeth on the cam shafts F, F¹, so that
by the rotation of the shaft the shafts F, F1, aro shifted simultaneously
endways.
The apparatus shewn in the Drawing is intended to operate with two
kneading scoops working side by side but in contrary directions in the
same trough, only one half of the apparatus being shewn. In practice,
as the arrangement of counterweights for drawing back the levers Q, Q',
on the cams may cause a jolting motion, I sometimes employ in lieu'
thereof the arrangement shown at Fig. 3, where the cams P, P¹, P", are.
replaced by an eccentric X, the strap of which is jointed to the lever Q',
and which consequently imparts both the backward and forward motion 2
to the levers Q, Q¹.
Having thus described the nature of my Invention and in what manner-

page_text: the motion of the scoop may be varied, substantially as and for the
purpose herein described.
.
In witness whereof, I, the said Christian Heinz, have hereunto set
my hand and seal, this First day of January, in the year of our
Lord One thousand eight hundred and seventy-six.
CHRISTIAN HEINZ. (L.S.)