Year: 1894

page_text: Date of Application, 3rd Mar., 1894
Complete Specification Left, 1st Dec., 1894-Accepted, 5th Jan., 1895
I, JAMES JOSEPH HARVEY of The Grove, Kidderminster in the County of
Worcester, Wine Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a simple and portable form of bellows suitable for use
in connection with the dust exhauster described in the Specification of my Patent
No. 546 of the year 1893.
The leather of the bellows is fixed to two boards inclined to each other and
standing up from a block on a base plate and is also fixed to a third board pivotted
to the block and free to oscillate between the other two thus forming a double
acting bellows.
The oscillating board is connected to the block by leather strips so as to make
an air tight joint and one end of its axis is provided with a footboard or treadle so
that it can be rocked by the foot. Fixed to the base plate on one side of the
bellows is a valve box and on the other side a cupboard to receive the exhaust.
The valve box is divided into four compartments by two vertical partitions and a
horizontal partition between the two vertical ones. The upper central compartiment
is provided with a nozzle through which air is sucked into the apparatus, it also has
two flap valves at its sides opening outwards one into each side compartment.
The lower central compartment also has two flap valves, these open inwards from
the two side compartments, and it is also connected by a passage (formed by the
base plate and a slot on the underside of the block) to the cupboard. One of the
side compartments is connected by a passage (formed by horizontal and vertical
slots in the block closed respectively by the base plate and one side board of the
bellows) with the inside of the bellows on one side of the oscillating board whilst
the other side compartment is connected by a passage (formed by a vertical slot in.
the block and the other side board of the bellows) with the inside of the bellows
on the other side of the oscillating board.
The door of the cupboard has a hole in it through which the air can escape the
dust being arrested in it by a sponge in the first place and afterward by a
porous bag.
Dated this 2nd day of March 1894.
JAMES J. HARVEY.
I, JAMES JOSEPH HARVEY, of The Grove, Kidderminster, in the County of
Worcester, Wine Merchant, 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 a simple and portable form of bellows suitable for use
in connection with the dust exhauster described in the Specification of my Patent
No. 546 of the year 1893.

page_text: Figure 1 is a plan of a pair of bellows constructed according to this invention.
Figure 2 is a section on the line 2-2 Figure 1, and Figure 3 is a partial section
on the line 3-3 Figures 1 and 2. Figures 4, 5 and 6 are an end elevation,
plan and side elevation respectively of the block c.
The leather a of the bellows is fixed to two boards bb inclined to each other and
standing up from a block on a base plate d and is also fixed to a third board e
pivotted to the block c and free to oscillate between the other two thus forming a
double acting bellows.
The oscillating board e is connected to the block by leather strips f so as to
make an air tight joint and one end of its axis e¹ is provided with a footboard or
treadle g so that it can be rocked by the foot or the treadle may be replaced by a
handle. Fixed to the base plate d on one side of the bellows is a valve box and
on the other side a cupboard j to receive the exhaust. The valve box is divided
to four compartments by two vertical partitions kk and a horizontal partition /
between the two vertical ones. The upper central compartment is provided with a
nozzle m through which air is sucked into the apparatus, it also has two flap
valves n n at its sides opening outwards one into each side compartment.
One of
The lower central compartment also has two flap valves o o', these open inwards
from the two side compartments, and it is also connected by a passage p (formed by
the base plate and a slot on the underside of the block) to the cupboard.
the side compartments is connected by a passage (formed by horizontal and
vertical slots in the block closed respectively by the base plate and one side board
of the bellows) with the inside of the bellows on one side of the oscillating board
whilst the other side compartment is connected by a passager (formed by a vertical
slot in the block and the other side board of the bellows) with the inside of the
bellows on the other side of the oscillating board.
The doors of the cupboard has a hole s¹ in it through which the air can escape
the dust being arrested in it by a sponge in the first place and afterward by a
porous bag which are not shown in the drawings.
The action of the apparatus is as follows:-The board e is assumed to be moving
from right to left of Figure 2 so drawing air into the right hand bellows and
expelling air from the left hand bellows. The incoming air enters at the nozzle m
and passes by the valve n¹ and passage into the right hand bellows whilst the
outgoing air passes from the left hand bellows through the passage 9 past the
valve o into the passage p and cupboard j and out through the hole s in its door.
During this time the valves n and o' are kept closed by the pressure of the outgoing
and incoming air respectively. When the board e is moving in the other direction
the valves and o' are open whilst n' and o are closed.
Figure 7 is a plan of a modification in which the air is filtered before instead of
after passing through the bellows. Figure 8 is a section on the line 8-8 Figure 7
and Figure 9 a partial section on the line 9-9 Figures 7 and 8. Figures 10, 11
and 12 are an end elevation, plan and side elevation respectively of the block c.
The same letters are used in these figures as in Figures 1 to 6.
In this arrangement the horizontal partition in the valve, box is omitted, the
central compartment forming a receptacle for the dust which is prevented from
entering the bellows by screens t of wire gauze. The passage p in the block c is
also omitted and the valves o o' are at the side of the block at the ends of the
passages and r.
In other respects the arrangement is similar to that shown at
Figures 1 to 6.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Double bellows having two fixed boards with an oscillating board between
them substantially as described.
2. Double bellows having a receptacle for dust substantially as described.

page_text: 3. Double bellows substantially as described and shown at Figures to 6 of the.
drawings.
4. Double bellows substantially as described and shown at Figures 7 to 12 of
the drawings.
JAMES J. HARVEY.