Year: 1886

page_text: I, JOHN JOSEPH LAPPIN of the City of Toronto in the County of York, in the
Province of Ontario, in the Dominion of Canada, Gentleman, 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 journal bearings of such shafts as are used in either
large or medium sized steam engines, or other motive powers, railroad car axles,
and shafting of general millwork and machinery.
It consists in chilling the acting surfaces-or parts of the surfaces-and to any
required depth in the same.
I am aware that ordinary waggon axle boxes, and sleigh runners, and various
other articles have been case-hardened, or skin-hardened, which hardening is
superficial, whereas my chill-hardening can be made to any desirable depth in the
chilled article.
In the accompanying drawings.
Figure 1. Is an end view of a journal-bearing intended for the outer end of a
propellor shaft of a steam boat, and showing the ordinary mode of construction of
the same, hereinafter described. Figure 2. Is an end view of a journal-bearing
for the same shaft, as that shown in Figure 1. and showing my mode of construc-
tion of the same with chilled-bearings, in accordance with my invention hereinafter
described. Figure 3. Is a plan view of one half of the journal-bearing, of my
mode of construction as shown in Figure 2. with the metal chilling-block laid in
the face of the bearing previous to moulding the same in the sand. Figure 3.1 Is
an end view of the lower half of journal-bearing shown in Figure 2, and showing
the chilled part therein with the chilling-block in the same position as when the
molten metal was run into the mould. Figure 4. Is a transverse sectional view of
a railroad car axle bearing showing the construction thereof. Figure 5 is a longi-
tudinal section of the same. Figure 6. Is an end view of a journal-bearing of a
railroad car axle showing my mode of the construction of the same. Figure 7 is
a longitudinal side view thereof, and Figure 8. a cross section of the same through
the line c. d. in Figure 7. Figure 9. Is an end view of a railroad car axle journal-
bearing, showing that the entire acting face, in this case is chilled.
The extent of chilled surface may be varied when specially required.
Similar letters of reference indicate the same or corresponding parts,

page_text: Referring to Figure 1. A represents the journal of a propellor shaft fitted into a
suitable casting or bracket A¹, for securing the same to the vessel; a² the cover of
the journal-bearing, and forms a part of the bracket casting and is lined in the
acting face with babbit metal a³. A2, is the lower half of the bearing, and is
cast seperate from the bracket casting, and is provided with two flanges a', between
which flanges a wrought iron strap as passes and having each of its ends formed as
a screw-bolt, with nut for drawing up and securing the lower half of the journal-
bearing to the upper half thereof, and to the bracket A. a, a, a, are pieces of
lignumvitae fitted accurately in the casting and will act on the lower half of the
journal.
Referring to Figure 2. B represents the journal of the same shaft as shown in
Figure 1. and is secured in a casting or bracket B¹ in the manner following:
68, is the cover of the journal bearing, and may form a part of the bracket B, or
otherwise, and is chilled in the acting face thereof and marked b³. B³, is the
lower half of the bearing, and is cast seperate from the bracket B¹, and is provided
with flanges 6, and straps 65 for securing the lower half of the bearing to the
upper half thereof, and to the bracket B¹. The chilled face in the lower half of
this journal-bearing is marked bº.
It will be observed that the substitution of chilled journal-bearings, for babbit
and lignumvitae-or other substances can be readily accomplished and at a
moderate cost.
Referring to Figure 3. C, represents the chilling-block and is laid on the acting
face of the journal-bearing, preparatory to the moulding and casting of the same.
The chilling being done simultaneously with the casting thereof.
Referring to Figure 3.1, which is an end view of the chilling-block c, and
journal-bearing, after the casting has been made, and occupying their respective
positions, as when the casting was being made.
·
Referring to Figure 4: D, represents a transverse section of an ordinary car
axle-bearing, and D¹ in Figure 5 shows a longitudinal section of the same.
Figure 6. shows an end view of a car axle-bearing, and showing my mode of the
construction of the same, and is marked E, the chilling-block F and bearing E are
shown in the same position as when the casting was made; f¹, is the chilled metal
in the acting face of the bearing.
Figure 7. Is a longitudinal side view of the same.
Figure 8. Is a cross section through the line c, d, in Figure 7.
Figure 9. Is an end view of a car axle-bearing having its entire acting surface
chilled.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
-
The acting surface of the journal bearings of revolving shafts, or a part, or parts
of the same; cast upon a chilling-block of metal, and chilled thereby, to increase
the durability of said journal-bearings, substantially as shown and described.