Year: 1886

page_text: I, HERBERT LOUD, of Linden Street, Everett in the County of Middlesex, and
State of Massachusetts, United States of America, Block Maker, 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 improvements in anti-frictional bearings and it is.
carried out as follows: reference being had to the accompanying drawings where
Fig. 1 represents an end elevation of the improved anti-frictional bearing; Fig. 2
represents a central longitudinal section on the line A-B shown in Fig. 1; Fig. 3
represents a horizontal central section on the line C-D also shown in Fig. 1; and
Fig. 4 represents a perspective view of the improved regulator.
Similar letters refer to similar parts wherever they occur on the different parts
of the drawings.
a is the shell or case as usual with external flange a' in one end, and an internal
annular lip or flange a" in the other as shown in Figs 1, 2 and 3, the latter serving
to prevent the anti frictional rollers b. b. b. from dropping out of shell a at such end;
in the opposite end of shell a is made an internal annular groove a³ in which is
laid the split-spring ring at as usual to prevent the rollers b. b. b. from dropping
out from shell a at such end. I do not wish to confine myself to the use of a split-
spring ring a' as shown, as if so desired, a detachable Hange may be used as a
substitute although I prefer to use the split spring ring as above described,
b1, b are cylindrical trunnions in the opposite ends of the anti-frictional rollers b, b,
as shown in Fig. 2.
The regulator for the purpose of holding the rollers b, b, b, at a proper distance
apart within the shell a when the bearing is in use, is fully shown in Fig. 4, and it
is composed of a pair of annular rings c, c which are held at a proper distance apart
and firmly secured together by means of the longitudinal stays or braces c¹, c¹, c¹,
two or more such stays or braces being preferably cast in one single piece with the
rings c, c, but if so desired they may be made as separate parts and rivetted or
otherwise firmly secured to rings c, c. On the interior surfaces of the regulator
rings c, c are made a number of radial recesses c¹¹, cl, cll, corresponding in number
on each ring to the number of anti-frictional rollers used in the bearing. Said
recesses c¹ extend in their outer ends to the outer periphery of rings c c so that the
trunnions b¹ 6 of the rollers b, b, may be laid loosely in such recesses previous to
locating the regulator and rollers within shell a as shown in Figs 1, 2 and 3.

page_text: The radial recesses cl, I prefer to terminate a short distance from the inner
periphery of each ring c as shown in Fig. 4, a solid portion c³ being left to serve as
a stop to prevent the rollers from going too far towards the centre of the regulator
when the operator is in the act of placing the rollers in the recesses in the rings o, c.
In practice I prefer to make the trunnions 61 61 sufficiently long so as to prevent
the ends of rollers b, b, from coming in contact with the inner surfaces of rings c c
and thus reduce the frictional resistance of the rollers relative to the regulator.
In fitting the regulator and rollers within the shell a I proceed as follows:-
The regulator, being detached from the shell a, I place in its recesses o¹, oll the
trunnions b¹, b¹ of the rollers b, b, and after all the rollers have been thus temporarily
located on the regulator, I introduce the regulator and its rollers within the shell a,
(the split-spring ring a being detached) after which the expansive ring a* is laid
in the groove a³, or a flanged ring secured to the mouth of shell a to prevent the
rollers from dropping out as shown in Figa 1, 2 and 3.
By the employment of this my improved regulator I combine lightness with
great strength, and as the end bearings for the rollers are arranged in rings, firmly
secured to each other, the anti-frictional rollers will be caused to run most easily,
with the least frictional resistance and without any liability to stick or bind in their
bearings. The regulator prevents the rollers from touching each other so as to run
easily against the interior of shell a and on the spindle located within the series of
rollers b, b when the bearing is in use.
This my improved anti-frictional bearing is especially well adapted for pulley
blocks but is also useful for stationary or other bearings as well as for other
purposes where an anti-frictional bearing is required.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In an anti-frictional bearing, a regulator consisting of a pair of rings c, c
having recesses o", c" on their insides for the reception of the roller trunnions, and
united by stays or braces c¹, cl as and for the purpose set forth.
2. In an anti-frictional bearing the regulator composed of rings c, c, having
interior recesses cll, cl, and braces c¹, c¹, c', combined with rollers b, b, b, having
reduced ends or trunnions b¹, b¹, as and for the purpose set forth.
3. The shell a, having annular flange a¹¹ and detachable wire or flange a* in
combination with the regulator composed of rings c, c having recesses c¹l, cll for the
reception of the end trunnions 61, 6¹ of rollers b, b and braces c¹, c¹, as and for the
purpose set forth.
100