Improvements in Biscuit Cutting Machines.
Year: 1890

page_text: Date of Application, 23rd Sept., 1890
Complete Specification Left, 23rd June, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Biscuit Cutting Machines.
We JOSEPH ALLEN BAKER, WILLIAM KING BAKER and GEORGE SAMUEL
BAKER of 58 City Road, in the County of Middlesex, Engineers, do hereby declare
the nature of this invention to be as follows:-
This invention relates to biscuit cutting machines and has for its object to give
to the finished biscuit a finer and smoother surface than has hitherto been
obtainable.
Hitherto the gauge rollers have either been driven by spur or ratchet gearing
which by reason of "backlash or the intermittent or jerky nature of the motion
has been productive of an uneven surface in the biscuit.
According to our invention we may gear the two gauge rollers together in the
ordinary way but to overcome the before-mentioned difficulty we drive preferably
the lower roller shaft by worm gearing.
The worm wheel on the gauge roller shaft gears with a worm on a shaft
operated by mitre gearing one of the mitre wheels being mounted on the shaft of
a conical belt-pulley. Opposite this pulley works another similar pulley with its
smaller end opposite the larger end of the first mentioned pulley and around the
two passes a crossed belt. This belt may be moved longitudinally on the conical
pulleys so as to increase or decrease the speed of rotation of the dough or gauge
rollers, and the shaft of one of said pulleys is connected with the main shaft of the
machine by toothed gearing which may be changed to suit certain speeds at which
it is desired to operate the guide rolls any other speeds between those provided for
by this change gearing being obtainable by adjusting the belt on the conical
pulleys. This last-mentioned adjustment permits of slight variation being made
without stopping the machine to suit the different stretching properties of the
dough to be formed into biscuits.
If desired the two gauge rollers instead of being geared together by spur
gearing nay both be driven by oppositely directed or operated worm gearing.
Dated this 20th day of September 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Biscuit Cutting Machines.
We, JOSEPH ALLEN BAKER, WILLIAM KING BAKER, and GEORGE SAMUEL
BAKER of 58 City Road, in the County of Middlesex, Engineers, 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 biscuit cutting machines and has for its object to give
to the finished biscuit a finer and smoother surface than has hitherto been
obtainable.
"
Hitherto the gauge rollers have either been driven by spur or ratchet gearing
which by reason of "backlash' or the intermittent or jerky nature of the motion
has been productive of an uneven surface in the biscuit.
According to our invention we may gear the two gauge rollers together in the
ordinary way but to overcome the before-mentioned difficulty we drive preferably
the lower roller shaft by worm gearing.

page_text: The worm wheel on the gauge roller shaft gears with a worm on a shaft operated
by mitre gearing one of the mitre wheels being mounted on the shaft of a conical
belt-pulley. Opposite this pulley works another similar pulley with its smaller
end opposite the larger end of the first mentioned pulley and around the two passes
a crossed belt. This belt may be moved longitudinally on the conical pulleys so as
to increase or decrease the speed of rotation of 'the dough or gauge rollers, and
the shaft of one of said pulleys is connected with the main shaft of the machine
by toothed gearing which may be changed to suit certain speeds at which it is
desired to operate the guide rolls any other speeds between those provided for by
this change gearing being obtainable by adjusting the belt on the conical pulleys.
This last-mentioned adjustment permits of slight variation being made without
stopping the machine to suit the different stretching properties of 'the dough to be
forined into biscuits.
I
If desired the two gauge rollers instead of being geared together by spur
gearing may both be driven by oppositely directed or operated worm gearing.
In the accompanying drawings
Fig. 1 is a perspective view of sufficient of a biscuit-cutting machine to illustrate
the application of our invention thereto.
Fig. 2 is a plan of the conical pulleys and belt and
:
Fig. 3 is an elevation of an alternative or modified form of part of the gearing.
Like letters indicate like parts throughout the drawings.
In Fig. 1, A A' are the two gauge rollers the shafts A' of which at one end
may be geared together by wheels B in the ordinary way. C is the worm' wheel
secured on the lower roller's shafts A2 and D is the worm with which it gears and
which is secured on the vertical shaft E supported in bearings E' secured to one
of the side frames F of the machine. G is the mitre wheel secured on the lower
end of shaft E and gearing with a 'similar mitre wheel G₁ on the shaft H which is
carried in two bearings I (only one of which is shown in Fig. 1) formed in or
secured to the frames F. On this shaft H is secured the conical pulley or drum J
around which passes the endless twisted belt K which also passes around another
similar conical pulley or drum J' mounted on the shaft L the two drums J J¹ being,
as is usual with such apparatus arranged with the larger end of one drum opposite
the smaller end of the other.
4
M Fig. 2 are the belt shifting forks which are not shown in Fig. 1 but which
are secured to and project downwards one from each end of the bar M¹ shown in
Fig. 1. This bar M¹ is secured to a screwed nut N which may be moved 'from
one towards the other side of the machine by means of the screw O operated by a
hand wheel O₁ so as to increase or decrease the speed of rotation of the gauge
rollers A Aas is well understood. P is a stationary guide rod for preventing
the nut N twisting and consequently jamming on the screw O.
"2
From the foregoing arrangement it will be seen that the gauge rollers A A' will
be rotated quite regularly and without jerks, for 'even if there be "backlash
between the wheels G G its effect will not reach the rollers A A' as it will be
absorbed, so to speak, by the worm gearing C D.
A
The shaft L is connected with the main shaft of the machine (which shaft is not
shown in the accompanying drawings) by toothed gearing. This gearing may be
changed to suit any speed, at which it may be desired to rotate the rollers A A'
which is outside the limits provided for by the adjustment of the belt K on the
conical pulleys J J¹.
I
1
As shown in Fig. 3 the two gauge rollers A A' instead of at one end being
geared together by wheels B as ordinarily may both' be driven by worm gearing,
the worm wheel C and worm D for driving the lower roller A being the reverse
of CD' for rotating the upper roller A' so that the parts of their surface which at
any time may be adjacent shall always move in the same direction.
In respects other than that last described the machine with each of the gauge
rollers driven by worm gearing is similar to the other "example 'shown in
Figure 1.
316
9.
ار
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32..
TELL

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that what
we claim is;
1. In a biscuit cutting machine the combination with the gauge rollers A A¹
geared together at one end of worm gearing such as CD for rotating one of the
said rollers and shafts E H and L bevel gearing G G' conical pulleys such as JJ'
and belt K substantially as described and illustrated in the accompanying
drawings.
2. In a biscuit cutting machine the combination with the gauge rollers A A¹ of
worm gearing such as CD CD' one set for rotating each of the said rollers and
shafts EH and L bevel gearing G G¹ conical pulleys such as JJ' and belt K
substantially as described and illustrated in the accompanying drawings.
Dated this 22nd day of June 1891.
JOSEPH ALLEN BAKER.
WILLIAM KING BAKER.
GEORGE SAMUEL BAKER.
W. P. Thompson & Boult,
Agents for the Applicants.