Improvements in or connected with the Bearings of Scales or other Weighing Apparatus.
Year: 1896

page_text: Improvements in or connected with the Bearings of Scales or other
Weighing Apparatus.
I, WILLIAM EDWARD HIPKINS, of the Firm W. and T. Avery's, Limited, Digbeth,
in the City of Birmingham, Managing Director, do hereby declare the nature
of this my said invention to be as follows:-
This invention relates to improvements in or connected with the bearings of
weighing apparatus and more particularly where beams or levers are employed
having knife edge pivots formed upon or attached thereto.
The most simple and direct application of this my invention may be seen in the
ordinary beam scale, supported by bearings at the upper end of a pillar. The
upper end of this pillar is formed fork wise, upon which said forks are placed
hardened steel bearings, as, or similar to, those shown in Specification No. 5238
of 1894, for which letters patent have already been granted. In the bearings
here referred to, it was necessary to provide some means of fastening them to
their seats by pins, studs or nibs etc., otherwise they were easily displaced and
lost.
In this my invention I dispense with such pins, studs, nibs or the like, and
make the bearing plates quite plain at the top, but prevented from moving end-
ways by notches formed in the bearing, which clip the side of the fork, but allow-
ing a certain amount of play so that the bearings may adjust themselves to the
line of the knife edges, when the beam is in its place.
I now further provide a cap fitting, whose lower part somewhat embraces the
pillar near about the bearing, so that with one screw pin it may be firmly held in
position. The middle part of this cap surrounds the bearing plate in such a manner
that gives perfect freedom to the action of the pivot or knife edge of the beam,
but at the same time prevents the removal of the said bearing plate so long as the
cap is in position.
The upper insides of the cap are further made with a throat like slot or opening
for the passage therethrough of the knife edge pivot of the beam on to the
bearing. Preferably this throat upon the one side is made a little smaller than
that upon the other side and the thickness of the beam pivots made to correspond,
so that the beam can thereby be placed in position in the one way only.
تيمم
CHARLES T. POWELL,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with the Bearings of Scales or other
Weighing Apparatus.
I, WILLIAM EDWARD HIPKINS, of the Firm of W. and T. Avery's, Limited,
Digbeth in the city of Birmingham, Managing Director, 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 or connected with the bearings of
weighing apparatus and more particularly where beams or levers are employed
having knife edge pivots formed upon or attached thereto.
In order to more clearly explain this my invention, I have appended hereunto
an illustrative drawing upon which are figures and numbers of reference, which
latter refer throughout to the same thing or part.
Fig. 1, is a front view, and Fig. 2, an end view of the upper part of a weighing
machine pillar or bearings, embracing this my invention.
Fig. 3, is a sectional plan view of one of the cheeks of the pillar on line A-B of
Fig. 1.
Fig. 4, is a rear or inside view of the bearing etc. of the pillar.
Fig. 5, is a detached plan view of one of the bearing plates.
Fig. 6, is a sectional view of the plate shown in Fig. 5, on line C-D.
The most simple and direct application of this my invention may be seen in
the ordinary beam scale, supported by bearings at the upper end of a pillar 8,
as shown upon the accompanying drawings. The upper end of this pillar is formed
forkwise, upon which said forks 9, 9, are placed loose hardened steel bearings 10, 10,
as, or similar to, those shown in specification No. 5238 of 1894, for which letters
patent have already been granted. In the bearings referred to in said specification
Number 5238 of 1894, it was necessary to provide some means of fastening them
to their seats by pins, studs or nibs etc. otherwise they were easily displaced and
lost.
In this my invention I dispense with such pins, studs, nibs or the like, and
make the bearing plates 10, quite plain at the top, but prevented from moving
endways by notches 11, formed in the bearing, which clip the fork at 12, but
allowing a certain amount of play or freedom so that the said bearings may adjust
themselves to the line of the knife edges, when the beam is in its place.
I now further provide a cap 13, whose lower part somewhat embraces the pillar
near about the bearing,-see more particularly Figs. 3 and 4,-so that with one
screw pin 14, it may be firmly held in position. The middle part of this cap
surrounds the bearing plate 10, in such a manner that gives perfect freedom to
the action of the pivot or knife edge 15, of the beam, but at the same time prevents
the removal of the said bearing plate so long as the cap is in position.
The upper part of the caps are further made with a throat like slot or opening
at 16, 16, for the passage therethrough of the knife edge pivot 15, of the beam on
to the bearings. Preferably this throat upon the one side 16, is made a little
smaller than 16" upon the other side, and the thickness of the beam pivots upon
each side made to correspond, so that the beam can thereby be placed in position
in the one way only, because of the inability of the larger pivot passing into or
through the narrowest throat.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1. Securing the bearing plates 10, upon supports 9, by means of notches 11,
and throated cap 13, all as set forth and shown.

page_text: 2. The combination with the varying thickness of the pivots 15, of the varying
width of throats 16, 16 in cap 13, as set forth and shown and for the purposes
specified.
20 day of Tuly 1897
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicant's Agent.