Improvements in the Adjustment of the Balls or Rollers in Ball or Roller Bearings.
Year: 1885

page_text: Improvements in the Adjustment of the Balls or Rollers in Ball
or Roller Bearings.
I JOSIAH JACKSON of 59 Lower Ford Street, Coventry, in the County of
Warwick, Machinist do hereby declare the nature of the said invention for
"IMPROVEMENTS IN THE ADJUSTMENT OF THE BALLS OR ROLLERS IN BALL OR
ROLLER BEARINGS to be as follows:-
"
The object of this invention is an adjustable means for instantly regulating the
wear in ball and roller bearings, and in "setting" the same, so that perfect freedom
of action shall always be obtainable without lateral "play or "rattle" usually
experienced in bearings of this kind as now constructed which increases with wear
and cannot easily be obviated.
According to this invention as applied to double bearings, the balls or rollers are
held in grooves of the usual form in a suitable bush or box, and retained by collars
or covers upon which half the groove may be formed These covers or collars are
arranged to be drawn a certain distance into the bush for adjusting the balls, and
instead of being fastened in any of the usual ways, are formed with projecting
sleeves, one with female thread and the other with male thread the the latter sleeve
passes through the balls and bush and encircles the driving shaft which also passes
through the bush. The adjustment of the balls is effected by screwing the collar
with female thread down the sleeve with male thread, which draws the two collars
nearer together.
For the purpose of adjustment one of the collars is formed on the outside with a
milled collar which gears with a suitably arranged cross screw. This cross screw
which is held between suitable standards and arranged to turn prevents any
shifting of the collar, but by turning the said screw the collar is screwed in either
direction thereby enabling a perfect adjustment of the bearings or grooves for the
balls to be instantly effected. As additional security against shifting of the collar
with sleeve with male thread a certain length of the sleeve may be squared and the
interior of bush made to correspond, or other known means may be used for this
purpose.
When this invention is applied to velocipedes the cross screw may be fitted on
the crank.

page_text: A modification of the above is to dispense with the milled collar and cross screw
and to have the screwed sleeves of collars projecting outside bush and slit the one
with female thread for a suitable distance to form a spring which by fitting the
outside with lugs and cross screws, may be tightened round the inner sleeve to
prevent shifting after adjustment as before described. For additional security
against turning a pinching screw may be suitably fitted to the split sleeve so that
the point may act against the inner sleeve. The driving shaft passes through the
inner sleeve to which it may be secured by cross pins or other known mechanical
means.
The first plan is more suitable for double bearings and the second for single, but
either may be used for either plan.

page_text: Improvements in the Adjustment of the Balls or Rollers in Ball
or Roller Bearings.
I JOSIAH JACKSON of 59 Lower Ford Street Coventry in the County of Warwick
Machinist, 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:-
The object of this invention is an adjustable means for instantly regulating the
wear in ball and roller bearings, and in setting the same, so that perfect freedom
of action shall always be obtainable without lateral play or "rattle" usually
experienced in bearings of this kind as now constructed which increases with wear
and cannot easily be obviated. This invention will be more clearly understood by
reference to the accompanying drawings.
Figure 1 represents an end view of one arrangement for carrying out this
invention, having crank arm attached.
Figure 2 longitudinal view.
Figure 3 sectional elevation.
Figure 4 end view of another arrangement.
Figure 5 side view of same.
Figure 6 sectional view.
Figure 7 end view of another arrangement.
Figure 8 sectional view of same.
Figure 9 side view partly in section of a modification of last figure.
Figure 10 end view of another arrangement.
Figure 11 sectional view of same.
Referring to figures 1. 2 and 3. a represents part of frame of velocipede having
the bearing attached by collar b secured to frame by outside screw c d is crank arm
secured to axle e by cross pin e¹. f bush of bearing being formed with a half bearing
groove for the balls g at interior of each end; through this bush passes a sleeve h,
having a flange or collar h¹ at one end to retain one set of balls, a portion of this
sleeve is screw threaded on outside, down which a second collar or cover i is
screwed the inner side of which is made to form a half groove bearing for the other
set of balls. It will be readily understood that the adjustment of the bearings for
both sets of balls is effected by screwing down the cover i which draws the flange
or cover into bush, and against balls; the axle e passes through sleeve h, to
which it may be secured in any known manner. This cover is fitted or formed
on outside with a flange k having its periphery cut with slanting teeth, or a milled
edge for a cross screw to gear in; this screw is held between two standards m
attached to crank arm d, by a bolt passing through and projecting beyond the
standards the length of bolt passing through screw is squared as shown at
figure 3, and hole made to correspond This bolt is formed with an outside square
head n and secured by nut o. The adjustment of the balls is effected by simply
turning nut n by spanner, which revolves the screw 1, thereby turning cover i.
Referring to figures 4, 5, and 6 These represent a modification suitable for a
single set of balls in this arrangement the screw of preceeding plan is replaced by

page_text: a turned over piece p the book end of which is formed with teeth corresponding to
the milled edge k, the adjustment is effected by unscrewing nut sufficient to allow
the piece p to be pushed up to admit of edge of k being free of teeth of p, so that
cover can be screwed down by hand In this arrangement the sleeve h of
preceeding figures is not used, the axle e being formed or fitted with outside
collar e¹, and the part that passes through bush being screw threaded for collar i,
to screw on to the balls being held off the thread by the sleeve part of i.
Referring to figures 7 and 8. These views represent another modification in
which the adjustment is secured by a pinching screw; in this plan the sleeve / has
a collar or flange at one end the remainder of it being screw threaded and passes
through narrow bush f, the adjustment of the balls is effected by screwing down a
second sleeve, suitably provided with part bearing for the balls and secured on h
by screw r The axle passes through h to which it is secured in any suitable
manner. This bearing may be attached to frame by brackets as represented.
A modification of this plan is represented at figure. 9, and is the arrangement
I use in double velocipedes capable of being converted into single ones, the two
frames being fitted with a clutching arrangement to fasten round bush f in
grooves a, b. In this plan it will be observed that the balls are held by screwed
in collar c at each end the said collar being secured from turning after adjustment
by pinching screws r; the bush is formed with studs g to admit of more metal for
the female thread of screw r; d represents axle, or sleeve for axle to pass through,
held in bush by balls and grooves e In double machines I use two of these double
bearings.
Referring to figures 10 and 11. These views represent another modification of
figures 7 and 8 The sleeve h is used as before described, but instead of the
pinching screw, or supplementary to it, the sleeve is slotted down for a certain
distance, and formed with outside lugs s, fitted with cross screws t; when the
bearing is to be adjusted the screws are loosened which admits of sleeve k being
screwed down, when the screws are tightened up, which firmly pinches the sleeve
round; for additional security a pinching screw may also be used.
'
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. The means for adjusting ball or roller bearings and securing adjustment,
substantially as herein before described under figures 1. 2. and 3 and represented
under these figures in the accompanying drawings.
2. The combined arrangement of parts forming adjustable bearings, and
means for securing adjustment, substantially as hereinbefore described under
figures 4. 5. 6. 7. 8. 9. 10 and 11, and represented under these figures in the
accompanying drawings.
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