Improvements in the Construction of Earthenware Scale Plates, and in Fittings in connection therewith.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 20th Feb., 1897-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Earthenware Scale Plates, and
in Fittings in connection therewith.
I, GEORGE HERBERT, of 6 and 7 West Smithfield, London, E.C., Scale Maker
and Cutler, do hereby declare the nature of my said invention to be as follows:-
The object of my invention is to effect improvements in the construction of
earthenware scale plates, and in fittings in connection therewith.
According to my invention I form a circular or otherwise shaped rim or ring, or
studs, snugs, or other projections on the underside of the scale plate, arranged to
loosely fit projections, depressions, or perforations, attached to or formed in or upon
the triangle, cross, platform, or equivalent support.
The rim or other projection or projections upon the scale plate may be formed
to engage the internal or external wall or walls of the projections on the triangle
or other support, or the latter may be provided with adjustable rims or snugs for
securing the position of the scale plate.
Rubber or other rings or packing pieces may also be used to prevent shifting
and rattling of the scale plate, in or upon its support. I also construct the outer
edge of the scale plate with a sharp curved edge, or a throating under the outer
edge, to carry away moisture of any kind and to prevent it being carried to the
support or framing and other working parts of the scales or weighing machine.
By my invention the ordinary turned up ends attached to the triangle, cross or
equivalent support, are rendered unnecessary.
GEO.
DOWNING,
8 Quality Court, London, W.C., Agent.
Improvements in the Construction of Earthenware Scale Plates, and
in Fittings in connection therewith.
I, GEORGE HERBERT of 6 and 7 West Smithfield London E.C., Scale Maker
and Cutler, do hereby declare the nature of my said 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 my invention is to effect improvements in the construction of earthen-
ware scale plates, and in fittings in connection therewith.
According to my invention I form a circular or otherwise shaped rim or ring, or
studs, snugs, or other projections on the underside of the scale plate, arranged to
loosely fit projections, depressions, or perforations, attached to or formed in or upon
the triangle, cross, platform or equivalent support.
The rim or other projection or projections upon the scale plate may be formed to

page_text: engage the internal or external wall or walls of the projections on the triangle or other
support, or the latter may be provided with adjustable rims or snugs for securing the
position of the scale plate.
Rubber or other rings or packing pieces may also be used to prevent shifting and
rattling of the scale plate in or upon its support. I also construct the outer edge of
the scale plate with a sharp curved edge or a throating under the outer edge, to carry
away moisture of any kind, and to prevent it being carried to the support or framing,
and other working parts of the scales or weighing machine.
By my invention the ordinary turned-up ends attached to the triangle, cross, or
equivalent support, are rendered unnecessary.
I prefer to manufacture the scale plates in moulds to various standard sizes, in order
to render them interchangeable, and renewable in case of breakage.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar figures of
reference indicate corresponding parts.
Fig. 1 is a plan view of the underside of a scale plate, made in accordance with my
invention.
Fig. 2 is a section on the line ab of Fig. 1.
Fig. 3 is a side view of the cross frame.
Fig. 4 is a plan view of the underside of the scale plate shown in Fig. 1, with the
cross frame in position for supporting the same.
Fig. 5 is an enlarged detail side view of the adjustable extension plate, set
screw, and rubber pads, shown in Figs. 3 and 4; and Fig. 6 is a view of the
underside of Fig 5.
Fig. 7 is a plan view of the underside of a circular scale plate, showing one method
of constructing and fitting the same with a triangular supporting frame."
Fig. 8 is a section on the line cd of Fig. 7.
Fig. 9 is a plan view of the underside of a circular scale plate, showing
another method of constructing and fitting the same with a cross platform for
supporting the same.
Figs. 10, 11, and 12, are enlarged sectional detail views, showing other methods
of fitting the frames with adjustable rubber pads for preventing rattling and ensuring
the fitting.
Referring to Figs. 1 to 6: 15 is the scale plate. 16 is the throating for preventing
moisture travelling underneath the plate. 17 is a snug of rectangular form, the head
being dovetailed or undercut as shown in section in Fig. 2. 18, 18, are two
triangular snugs, one face of each snug being dovetailed or undercut, as also shown
in Fig. 2. These snugs are cast with the plate or otherwised formed upon it. The
frame 19 has dovetailed chamfered or other projections at 20, 20, which engage the
inclined faces of the snugs 18, 18.
The arm 19 of the frame carries an adjustable slotted plate 21, attached thereto
by means of a set screw 22, as shown enlarged in Fig. 5 and 6. The end of the
plate 21 is formed with a right angled end 23, which is bored to receive rubber
plugs 24, 24.
In fitting the scale plate 15 to the frame 19, the plate 21 is adjusted so that
the rubber plugs may be compressed in the snug 17, while the projections 20 are
secured against the snugs 18, whereby the plate is held to the frame, and the
ordinary shifting and rattling of the scale plate is entirely prevented.
Referring to Figs. 7 and 8, the underside of the circular scale plate 15, is shown
formed with two snugs (or mutilated ring) 17° 17° having inclined or undercut
inner surfaces as shown in section in Fig. 8. Tho arms 19 of the frame are fitted
with rubber pads, which impinge against the inclined surfaces of the snugs 17ª.
The inner ends of the same arms are chamfered at 20 to engage the snugs 18.
The underside of the circular plate 15, shown in Fig. 9 has 4 snugs 17, similarly
formed to those shown in Fig. 1, or a ring, as indicated with reference to Fig. 7,
and the frame 19 may carry two or more adjustable slotted plates 21, with set screws 22
and rubber plugs, four slotted plates being shown.

page_text: Figs. 10, 11, and 12 illustrate three methods of forming the rubber pads,
which may be applied instead of those previously described, but other forms may be
used.
In each of the foregoing arrangements the scale plate is secured to the frame
by the wedge-like or dovetailed action of the points of contact; and, by means
of the rubber pads and plugs, the scale plates are rendered interchangeable and
renewable in case of breakage and the ordinary rattling of the plates is prevented.
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. The improvements in the construction of earthenware scale plates, and in fittings
in connection therewith, substantially as and for the purposes herein before described
and illustrated by the drawings.
2. In earthenware scale plates and fittings in connection therewith, the combination
of wedge-like projections or snugs, integral with the plate, and corresponding surfaces
forming dovetail points of contact, integral with or fitted to the frame, and rubber
plugs, pads, or cushions, forming elastic points of contact with the snugs,
substantially as and for the purpose herein before described and illustrated by
the drawings.
3. In combination with earthenware scale plates and fittings in connection there-
with, the application and use of rubber pads, plugs, or cushions for the purpose of
ensuring interchangability and fitting and for preventing vibration substantially as
herein before described and illustrated by the drawings.
4. In earthenware scale plates and the like, the application and use of the
sharp curved edge or throating under the edge, substantially as and for the
purpose specified.
1007
GEO.
DOWNING,
8 Quality Court, London, W.C., Agents.