Improved Silencer for the Exhaust of Gas, Oil, and the like Motors.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Silencer for the Exhaust of Gas, Oil, and the like Motors.
LORENZO WILLIAM CROSTA, of 6, Park Avenue, West Bridgford, Notts, Engineer,
and JOHN TAYLOR & SONS, LIMITED, Queen's Road, Nottingham, Engineers, do
hereby declare the nature of this invention to be as follows:-
For deadening the sound and condensing the exhaust from gas, oil and the like
motors, we employ a drum or box of any determined shape & size, the inside of
which has one or more drums or boxes of diminished capacities, with plates at
each end, one being so arranged that the exhaust products are carried from motors
or engine to the inner box or drum, & then passing after expansion to the next
drum larger in capacity-when more than 2 drums are used, & so on until finally
the products arrive in the outer drum, passing from this, through the other cover
to the atmosphere, this cover having an additional chamber formed in itself, or
the order of connecting the silencer to engine may be reversed, & enter the
largest drum first instead of the smallest.
To further silence the exhaust after having passed through the drums & covers,
between the last cover & where the exhaust meets the open atmosphere further
expansion is made to take place.
To silence more effectually the exhaust, we may carry through the chambers
by means of pipes or tubes, air or cold water or the like, which before finally
discharged passes through the exhaust in 2 or more chambers, at different expan-
sions, assists to silence the noise, on its way to the atmosphere, & helps the engine
to work more economically.
LORENZO WILLIAM CROSTA,
JOHN TAYLOR & SONS, LIMITED.
For the Company.
JOHN RENALS,
Director.
Improved Silencer for the Exhaust of Gas, Oil, and the like Motors.
LORENZO WILLIAM CROSTA, of 6, Park Avenue, West Bridgford, Notts, Engineer,
and JOHN TAYLOR & SONS, LIMITED, Queen's Road, Nottingham, Engineers, do
hereby declare the nature of this invention and in what manner the same is to be
[Price 8d.1

page_text: performed, to be particularly described and ascertained in and by the following
statement:
-
For deadening the sound and condensing the exhaust from gas, oil and the like
motors, we employ a drum or box of any determined shape and size, the inside of
which has one or more drums or boxes of diminished capacities,,with plates at
-each end, one being so arranged that the exhaust products are carried from motors
or engine to the inner box or drum, and then passing after expansion to the next
drum larger in capacity, when more than 2 drums are used, and so on untill finally
the products arrive in the outer drum, passing from this through the other cover
to the atmosphere, this cover having an additional chamber formed in itself, or
the order of connecting the silencer to the engine may be reversed, and enter the
largest drum first instead of the smallest.
To further silence the exhaust after having passed through the drums and covers,
between the last cover and where the exhaust meets the open atmosphere, further
expansion is made to take place.
To silence more effectually the exhaust, we may carry through the chambers,
by means of pipes or tubes, air or cold water or the like, which before finally
discharged passes through the exhaust in 2 or more chambers at different expan-
sions, assists to silence the noise on its way to the atmosphere and help the engine
to work more economically.
By reference to the accompanying 3 sheets of drawings our invention will be
more fully understood of which
Figure 1 is a sectional elevation of a silencer made with 2 drums and 2 covers
and
Figure 2 is a sectional plan of same.
Figure 3 is a sectional elevation of silencer made with 3 drums and 2 covers and
Figure 4 a sectional plan of same.
Figure 5 is a sectional elevation of a silencer having tubes or pipes passing
through each chamber and though shewn with only 2 drums, can be of more if
required and
I",
Figure 6 is a sectional plan of the saine.
Referring to Figures 1 and 2 the end plate G is connected by flange F to the
pipes conveying the exhaust products from the motors, such products passing to
the inside of drum or chamber A, where expansion at once takes place, and then
passes by means of openings B to the inside of drum C,, where further expansion
takes place, and passes through cover H, being cut up or divided in its progress
by ribs L. before reaching outlet M and then conveyed in usual manner to the
atmosphere, thus by these various expansions, the noise of the exhaust is greatly
muffled.
Referring to Figures 3 and 4 further muffling of the exhaust takes place by
having an extra drum D, by which an additional expansion takes place and the
silencer is more effective than with one made as previously described and shewn
in Figures 1 and 2. F
-T
Referring to Figures 5 and 6 it will be seen that this form of silencer is similar
to the one shewn in Figures 1 and 2 which can also be constructed with more than
2 drums, but has in addition a number of pipes passing through each chamber
and through which air, cold water or the like may be circulated, each supply
however passing through the exhaust products in 2 or more chambers at different
points of expansion, such arrangement though more expensive, assists to further
silence the exhaust. Instead of the exhaust products entering the cover G first
as previously described, the products can be carried into the silencer first through
the cover where it is divided up before passing into the interior of the outer
drum C and after expansion ultimately arrives in the inner drum A then passes
through cover G to pipe leading to the atmosphere.
Without any alterations in constructions, either type silencer is adaptable to all
motors worked by gas, oil or the like, the flanges F or M being used to connect in
the usual manner to the exhaust of engine.

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;-
1st. Forming or constructing silencers for muffling the sound of the exhaust
products from motors worked by oil gas or other explosive mixtures wherein the
products are made to expand 2 or more times before finally being discharged into
the atmosphere as fully described and shewn on accompanying drawings Figures 1,
2, 3 and 4.
2nd. Forming or constructing silencers, wherein the products are made to
expand in 2 or more chambers and in combination with a number of pipes for the
purpose of cooling the products at various points of expansion all as fully described
and shewn on accompanying drawings, Figures 5 and 6.
.
3rd. The combination of various chambers and arrangements of cooling same
as shewn and fully described in accompanying 3 sheets of drawings.
Dated this 10th day of August 1898.
LORENZO WILLIAM CROSTA,
For the Company of
JOHN TAYLOR & SONS, LTD.,
JOHN RENALS,
Director.
LORENZO WILLIAM CROSTA,
For the Company of
JOHN TAYLOR & SONS, LTD.,
JOHN RENALS,
Director.