Improvements in and in connection with the Crank Shafts of Motors.
Year: 1899

page_text: Date of Application, 19th May, 1899-Accepted, 8th July, 1899
COMPLETE SPECIFICATION.
Improvements in and in connection with the Crank Shafts of Motors.
We, EDOUARD ALEXIS VIVINUS and AUGUSTE JULES HECHT, both of Schaerbeck-
lez-Bruxelles, Belgium, 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 an improved arrangement of crank shaft which is
specially applicable to explosion motors that are, at the open end of the cylinder,
provided with a box or casing forming an oil bath.
The object of the invention is to enable a connecting rod end made in one
piece and having neither bolts nor nuts to be keyed on the crank shaft; to greatly
facilitate the assembling and dismounting of the parts of the motor and crank
casing; the dismounting of a single part not necessitating the displacement of
other parts, and to obtain an arrangement constructionally extremely simple
and strong, and very easily made.
The invention comprises (1) the arrangement of the crank shaft in two parts,
separable one from the other so as to allow of the introduction of the end of
the connecting rod made in one piece (2) the combination with this crank shaft
of a specially constructed casing, the two portions of the crank shaft being
mounted in bearings formed in the two cheeks of the casing and (3) the com-
bination with this arrangement of the end of the motor, of a fly wheel fitted
with a transmission gearing or pulley surrounding one of the cheek bearings.
The accompanying drawing represents an arrangement of crank shaft with
connecting rod and casing according to this invention.
The end of the cylinders fits in a groove, cut in the upper part of a cylindrically
shaped chest A which forms an oil chamber; this chest is closed at its sides
by cheeks B and C which also serve as bearings for the shafts ]) and F of the
crank shaft D L JO F. The two cheeks B and C are attached to the casing
by a series of bolts and nuts K which pass through holes in the cylindrical
chest A.
The crank shaft is in two portions; the one portion D L J which is doubly
cranked, constituting the driving axle; the other portion OF, which is cranked
once, constituting the axle driving the distribution organs, such as the arrange-
ments for moving the valves and the ignition cams. The portion O F is formed
by a plate O, keyed on to or made in one with the axle 1 and has an opening
which engages with a pin M on the crank pin J. As will be seen the two portions
of the crank shaft can be separated one from the other so as to permit of the
introduction between them, and of the keying on to the pin J, of a connecting
rod E, the end of which is made in one piece. On the outer end of the shaft ])
the fly wheel Vis keyed near to the end of the cheek bearing B; the fly wheel
carries a transmission pulley or drum R, which partly encloses the cheek-bear-
ing B, thereby reducing the space taken up by the motor.
This construction enables the cheek-bearing B and the driving axle D to be
made. very long,, so that these parts will offer a great resistance against wear etc.
When the shaft D is in motion the axle F; carried round by the crank and

page_text: pin M, rotates in unison with the driving shaft and actuates in its turn a pinion l',
which drives the arrangements represented by P¹ and G for moving the valves
and ignition cams, in a predetermined ratio.
The lubrication of the bearings and the connecting-rod end is effected by the
dipping of the latter and of the crank into the oil H contained in the casing;
the oil being splashed in all directions, flows over the walls of the cheeks B
and C and penetrates into the bearings through the apertures T and T.
The drawing shows the great facilities which the arrangement of crank shaft
and casing afford for assembling and dismounting the various parts.
When assembling the motor the end of the cylinder s, fitted with piston and
connecting rod E, is first of all placed in the groove in the chest A; the cheek-
bearing B is next put into position, the pin J of the cranked shaft D L J (which
has been previously inserted in the cheek-bearing B) is inserted through the end
of the connecting rod E and finally the plate Ŏ of the shaft O F which passes
through the cheek bearing C, is placed on the pin M. All that remains to be
done is to tighten the nuts of the bolts K and the various parts are preferably
assembled.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is;-
1. In a motor having a casing forming an oil bath the arrangement in the
casing of a crank-shaft made in two portions which can be joined to and separated
the one from the other for the purpose of inserting between them the end of a
connecting rod made in one piece and of facilitating the assembling of connect-
ing rod, crank-shaft and casing substantially as described.
2. In a motor having a casing forming an oil bath the combination with a
two part crank shaft, of two checks which form, the two sides of the casing and
each of which constitutes the bearing for one of the two portions of the crank
shaft, substantially as described and for the purpose set forth.
(3) In a motor having a casing forming an oil-bath the arrangement of a
fly-wheel carrying a transmission pulley or drum partly enclosing the cheek-
bearing of the driving-axle, substantially as described and for the purpose set
forth.
4. In a motor having a casing forming an oil-bath the combination of two
axles, one doubly cranked forming the driving axle and the other cranked once
driven by the first, the two axles containing between them the end of a connect-
ing-rod made in one piece, and each of said axles being mounted in a bearing
formed by a cheek of the casing, substantially as described.
5. In a motor having a casing forming an oil bath the combination of a crank
shaft D L J, a crank-shaft engaging with a pin M on the first-mentioned
crank shaft, a connecting rod E having its end made in one piece keyed on to
the pin J on the shaft D L J, check bearings B and C for the two shafts,
lubricating ducts T, T', in these bearings communicating with the interior of the
casing, and bolts K for attaching said cheek-bearings to the cylindrical chest A
of the casing, substantially as described and shewn.
6. The combination and arrangement of parts constituting the improved
crank shaft casing, constructed, arranged and operating substantially as de-
scribed and shewn.
Datad the ort 1
er
1000
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicants.