Improvements in Means of Supporting the Bearings of Spindles or Shafts in Wall Brackets or Frames.
Year: 1898

page_text: Date of Application, 12th Sept.,
1898
Complete Specification Left, 10th June, 1899-Accepted, 15th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in Means of Supporting the Bearings of Spindles
or Shafts in Wall Brackets or Frames.
I, SAMUEL CLELAND DAVIDSON, of Sirocco Engineering Works, Belfast, Ireland,
Merchant, do hereby declare the nature of this invention to he as follows:—
My invention has reference more particularly to means of supporting and securing
the bearings of spindles or shafts in wall brackets or frames for which the said
spindles or shafts have their ends overhanging and projecting from one or both ends
of the bearings, and a fan, pulley, or crank may be mounted thereon without (or it
may be with) exterior support from other bearings, as in the case either of fans
attached to or within walls or partitions, for moving air or other fluid through an
orifice or opening therein, for ventilating or such-like purposes, or of a bracket for
carrying a countershaft having pulleys or cranks mounted on the projecting ends;
and the objects amongst others of my invention are to so construct said wall brackets
or frames and to support the bearings therein that said bearings shall be thoroughly
rigid and firm, and the bracket as a whole, light and simple to make, and that the
obstruction by the brackets or frames to the passage of air or other fluids shall be as
little as possible.
According to my invention the bearing in which the spindle or shaft rotates is
secured within a wall bracket or frame which may be in the form of a ring, or of a
triangular, rectangular, or polygonal frame (hereinafter referred to as the bracket)
by means of wire or other stays (hereinafter referred to as the stays), which are
extended from straining attachments in the bracket to the bearing to which they are
connected at or near to each end of the same and operate thereon by tensile strain,
in such manner that the tension of said stays tends to draw the ends of the bearing
towards one another, and to put the intermediate portion of the bearing under com-
pression, like as, in an ordinary bicycle wheel, the tension of the wire spokes operates
from the rim upon the hub.
The bracket is further constructed with suitable flanges or arms, whereby it may
be attached, by bolts or otherwise, to a wall or partition, or to a ceiling or floor, but
if the bracket be built into a wall, these flanges may not be required. The tighten-
ing of the stays is provided for by having their outer ends screwed and passed
through suitably located holes in the bracket, nuts being mounted thereon, so that,
by tightening same on the outer side of the bracket, the ends of the bearing can be
adjusted into proper position and any required tension given thereto for holding
them in said position with sufficient firmness and rigidity.
For lightness of construction as well as for durability and lubrication the bearing
may be made of two bearings proper, connected together by an intermediate tube or
pipe.

page_text: १
Improvements.in Means of Supporting the Bearings of Spindles
or Shafts in Wall Brackets or Frames.
I, SAMUEL CLELAND DAVIDSON, of Sirocco Engineering Works,, Belfast, Ireland,
Merchant, do hereby declare the nature of this invention and in what inanner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention has reference more particularly to means of supporting and securing
the bearings of spindles or shafts in wall brackets or frames when the. said spindles
or shafts have their ends overhanging and projecting from one or both ends of the
bearings, and a fan, pulley, or crank inay be mounted thereon without (or it may be
with) exterior support from other bearings, as in the case either of fans attached to
or within walls or partitions, for moving air or other fluid through an orifice or
opening therein, for ventilating or such-like purposes, or of a bracket for carrying a
countershaft having pulleys or cranks mounted on the projecting ends; and the
objects amongst others of my invention are to so construct said wall brackets or
frames and to support the bearings therein that said hearings shall be thoroughly
rigid and firm, and the bracket as a whole, light and simple to make, and that the
obstruction by the brackets or frames to the passage of air or other fluids shall be as
little as possible.
According to my invention the bearing in which the spindle or shaft rotates is
secured within a wall bracket or frame which may be in the form of a ring, or of a
triangular, rectangular, or polygonal frame, by means of two sets of wire or other
stays, which are extended from straining attachments in the bracket to the bearing
to which they are connected at or near to each end of the same and operate thereon
by tensile strain, in such manner that the tension of said stays tends to draw the ends
of the bearing towards one another and to put the intermediate portion of the
bearing under compression, like as, in an ordinary bicycle wheel, the tension of the
wire spoke operates from the rim upon the hub.
The bracket has suitable flanges or arms, whereby it may be attached, by bolts or
otherwise, to a wall or partition, or to a ceiling or floor, but if the bracket be built
into a wall, these flanges may not be required. The tightening of the stays is
provided for by having their outer ends screwed and passed through suitably located
holes in the bracket, nuts being mounted thereon, so that by tightening same on the
outer side of the bracket, the ends of the bearing can be adjusted into proper
position and any required tension given thereto for holding them in said position
with sufficient firmness and rigidity.
For lightness of construction as well as for durability and lubrication the bearing
may be made of two bearings proper, connected together by an intermediate tube
or pipe.
In the accompanying drawings:-
:-
Figures 1 and 2 are vertical sections taken at right angles to each other illustrating
my improved means of supporting the bearings of a spindle or shaft in a wall bracket
or frame attached to a partition or wall and showing its adaptation in the mounting
of ventilating fans which are employed for exhausting the fluid operated on through
an orifice in said partition and discharging it on the opposite side thereof.
Figure 3 is a mid-longitudinal section illustrating the application of my said means

page_text: in the case of a wall bracket or frame built into a wall and showing its adaptation in
the form of a bracket for a countershaft mounted with pulleys.
Figures 4 and 5 are respectively an end elevation and a mid-longitudinal section
illustrating the application of my said means in the case of a bracket or frame
attached to a floor or ceiling and showing its adaptation as a bracket for a counter-
shaft mounted with pulleys.
Figure 6 is a mid-longitudinal section illustrating the application of my said means
in the case of a wall bracket or frame attached to a partition and showing its adapta-
tion as a bracket for a countershaft, with pulleys, and crank mounted on the respective
projecting ends.
Referring first to Figures 1 and 2, a represents the wall bracket or frame. b is a
flange on said bracket by which it is attached to the partition or wall c by bolts d.
h is the spindle or shaft on which the pulley and ventilating fan k are mounted.
k¹ represents a disc on which the fan blades are mounted. fgf represent the bearing
for the spindle or shaft h; this bearing may be made in one piece but for lightness of
construction as well as for durability and lubrication it is preferred to make it as
shown, that is to say, of two bearings ff at the respective ends and an intermediate
tube 9 connecting same together. ee are wire or other stays connecting the bearing
at or near its ends to the bracket ; the inner ends of these stays are not connected
to the bearing itself but to flanges or projections f¹ thereon. The outer ends of said
stays pass through holes in the bracket a and are fitted with nuts n by which they
can be strained to the required extent. The stays are always in tension and there-
fore tend to draw the ends of the bearing towards one another and to put the inter-
mediate parts of the bearing under compression. The number of the stays is optional
so long as there are not less than three connected to each end of the bearing; the
drawings show four stays at each end which is a suitable number in ordinary cases.
The distance apart of the attachment of the two sets of stays to the bearing
measured parallel to the axis of the spindle should be greater than the distance apart
of their attachment to the bracket a. The bearing is shown projecting at f2 some
distance beyond the flange f¹ to which the stays e are attached for the purpose of
giving support to the shaft h when it has to be considerably extended towards the
disc on which the fan blades are mounted.
In Figure 3 which shows the invention applied in the case of a bracket a built
into a wall c for a countershaft h mounted with pulleys jj at both sides of the bracket
the flanges to which the stays e are attached are shown as being at an angle with
the bearing.
In Figures 4 and 5, m represents the ceiling or floor to which the bracket a is
attached by the bolts & passing through the flanges b of said bracket.
In Figure 6 represents a crank mounted on one of the projecting ends of the
countershaft h and jj are pulleys on the other projecting end.
It will be seen that in all the constructions shown the brackets and stays offer very
little obstruction to the passage of air or other fluid which is of great importance in
the case of ventilating fans.
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. In a wall bracket or frame having a bearing therein for a spindle or shaft the
ends of which project from one or both ends of the bearing to receive a fan, pulley,
crank or other device, the method herein before described of supporting and securing
said bearing in said bracket or frame which method consists in the employment of
two sets of stays respectively connecting the bearing at or near its ends to said
bracket, said stays being in tension and the distance apart of the attachment of said
two sets of stays to the bearing being greater than the distance apart of their attach-
ment to the bracket, whereby they tend to draw the ends of the bearing towards
each other and to put the intermediate parts of the bearing into compression, sub-
stantially as set forth.

page_text: 2. The combination of the bracket a, shaft or spindle bearing f, flanges f¹, stays e
connecting said flanges with said bracket, and straining attachments n for putting
said stays in tension, substantially as set forth and shown.
Dated this 8th day of June 1899.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.