Improvements in Motors Worked by Explosive Mixtures.
Year: 1895

page_text: Date of Application, 21st Oct., 1895
Complete Specification Left, 21st July, 1898-Accepted, 22nd Aug., 1898
PROVISIONAL SPECIFICATION.
Improvements in Motors Worked by Explosive Mixtures.
We, COUNT ALBERT DE DION and CHARLES BOUTON, both of 12 Rue Ernest,
Puteaux, France, Engineers, do hereby declare the nature of this invention to be
as follows:-
Our invention relates to improvements in motors worked by explosive mixtures,
and consists in an arrangement for fixing the cylinder, together with its cover, to
the frame of such motors.
According to our invention, the end cover of the cylinder is formed with an
annular groove or recess in which is placed a washer of asbestos, copper, or other
malleable and incombustible material, capable of being slightly compressed under
pressure. This groove or recess fits over or receives the upper or outer edge of
the cylinder, the base of the latter being fitted and resting in a rebate in tho frame
of the engine.
The end cover, the cylinder, and the frame, are firmly held together by bolts or
tie rode, the lower ends of which screw into the frame, while their upper ends are,
provided with nuts which are screwed down so as to slightly compress the aforesaid
washer and form a tight joint.
The same arrangement is applicable to jacketted cylinders (as for instance, for
water circulation). In this case, the frame is formed with two rebates and the end
cover of the cylinder with two concentric aunular grooves or recesses, provided with
washers, the ends of the cylindrical jacket fitting into the outer rebate and groove or
recess, to compress the washer therein. The tie rods, or screw bolts, may be placed
either in the aunular jacket space, or outside the jncket.
The tie rod arrangement above described presents the following advantages.
The strong tension of the tie rods develops in the metal of the cylinder, an initial
and permanent compression which compensates for the strain of longitudinal
traction exerted on the cylinder by the explosion of the carburetted mixture.
It therefore results that for an equal power of the engine the thickness of the
cylinder provided with tie rods may be less than that of a cylinder without. tie
rods, such as now constructed. This permits of decreasing the weight of the
engine which is an important advantage when it is a question of actuating
selfpropelling. (horseless) vehicles.
Furthermore the joint formed by the compressed asbestos or copper washer, at
the bottom of the groove or recess, is exceedingly strong and sure, owing to the
great pressure exerted by the end cover on the cylinder. The arrangement more
over facilitates the taking to pieces, and the inspection of the various parts of the
engine, it being only necessary to unscrew the nuts of the tie rods in order to
separate the end cover and the cylinder..
Dated this 21st day of October 189.i.
•

page_text: Improvements in Motors Worked by Explosive Mixtures.
We, COUNT ALBERT DE DION and CHARLES BOUTON, both of 12 Rue Ernest..
Puteaux, France, Engineers, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
B
Our invention relates to motors worked by explosive mixtures, and has for its
object to provide improved meaus for attaching the cylinder, together with its end
cover, to the frame of such motors.
According to our invention the end-cover of the cylinder is formed with an
annular groove or recess, and the frame of the engine is formed with a rebate to
receive the lower or inner end of the cylinder. A suitable joint ring or washer is
interposed between the upper end of the cylinder and the bottom of the aforesaid
annular groove in the cylinder cover, and the said end cover, the cylinder, and the
frame, are all firmly bolted together by long bolts or tie-rods.
In order that our said invention may be clearly understood and readily carried.
into effect we will proceed to describe the same more fully with reference to the
accompanying drawings, in which :-
Figure 1 is a vertical section of the upper portion or cylinder of an explosion
engine shewing our improvements applied thereto.
Figure 2'is another vortical section of the 'upper portion or cylinder of an
explosion engine shewing a modification of our invention.
A is the cylinder which consists of a separate hollow cylindrical piece open at
both ends. B is the cover and 6 its annular groove or recess which is formed
therein to receive the apper end of the cylinder A. C is a portion of the framing
of the engine and a the rebate provided for the reception of the lower end of the
aid cylinder. The aforesaid cover B has flanges b and the portion C of the
framing also has flanges c. These flanges care provided with holes for
the reception of the bolts or tie-rods D, the holes in the flanges c' being screw
thrended. The lower ends of the said bolts D are screw threaded to enter the
said holes and their upper ends are also screw threaded to receive nuts d. E is
the washer that is located in the annular groove or recess & in the cylinder cover,
this washer being composed of asbestos, copper or other comparatively soft and
incombustible material. When the parts are fitted together as shewn in the drawings
and the nuts d tightened, the aforesaid washer becomes compressed by the pressure
to which the cylinder is subjected under the tension of the said bolts or tio-rods and
Avery tight and efficient joint is thus produced.
The tension of the tie rods effectually counteracts the longitudinal strains to
which, the cylinder is subjected by the explosion of the working charges.
Consequently the thickness of the metal of the cylinder employed in our engine
may be less than that of a cylinder connected to the framing of an engine in the
ordinary manner. This enables a reduction in the weight of the engine to be
obtained, which is an important advantage when the engine is intended for driving
self-propelled or horseless vehicles. The joint formed by the compressed asbestos
or copper washer, is exceedingly strong and effective, owing to the great pressure
exerted on the cylinder by the end cover. Moreover the taking to pieces
and inspection of the various parts of the engine are much facilitated by our
invention, it being only necessary to unscrew the nuts d of the tie-rods in order to
separate the end cover from the cylinder, and the cylinder from the framing.
C
The modification shewn in Figure 2 illustrates our invention applied to a water-
jacketed cylinder. In this case, the frame C is formed with two rebates cox and
the cylinder cover B with two concentric annular grooves or recesses 6 6x, each of
these grooves being provided with a washer E. The inner groove band the rebate e

page_text: receive the opposite ends of the cylinder, as in the previous arrangement, and the
outer groove 6* and rebate o* receive the opposite ends of the cylindrical jacket A'.
The bolts or tie rods D are in this construction arranged within the annular space
existing between the cylinder A and jacket A', but if desired they may be situated
outside the jacket.
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." An explosion engine in which the cylinder cover, the cylinder and the framing
are connected together by long bolte or tie-rods substantially as described with
reference to the accompanying drawings and for the purpose specified.
2. The modification of our invention substantially as described with reference to
Figure 2 of the accompanying drawings.
21st day of July 1000.
Dated this sit
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.
Inaar (m0 10 Con ARTE LIMA NMOST