A New or Improved Plaster Support or Lathing for the Corners of Walls, Partitions, or Ceilings, for Affording a Perfect Foundation and Key for the Plastering, Permitting of a Symmetrical Finish, and for other purposes.
Year: 1896

page_text: Date of Applicati n, 19th May, 1896-Accepted, 27th June, 1896
COMPLETE SPECIFICATION.
A New or Improved Plaster Support or Lathing for the Corners of
Walls, Partitions, or Ceilings, for Affording a Perfect Foundation
and Key for the Plastering, Permitting of a Symmetrical Finish,
and for other purposes.
A communication by FRANK LORING UNION, Engineer, and MICHAEL AMBROSE
HANNON, Grocer and Provision Dealer, both of Boston, in the County of
Suffolk and State of Massachusetts, United States of America.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham in
the County of Warwick and 322 High Holborn in the County of Middlesex
Civil Engineer, do hereby declare the nature of this invention aud in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
This invention has relation to plaster supports or lathing for the corners of walls,
partitions and ceilings for the purpose of keeping or keying the plastering in places
and it has for its object the provision of such improvements as will not only afford
a perfect foundation and key for the plastering but permit of a symmetrical finish
of a corner, avoid cracking or scaling, admit of ready application, and be most
economical of manufacture and use.
The difficulty of providing a suitable lathing or foundation for plastering at the
corners of walls, partitions and ceilings so as to get a perfect and symmetrical
finish and at the same time afford a secure support for the plastering is well known
to those skilled in the art. By this invention the said difficulty is overcome and at
the same time a most economical and readily applicable plaster-supporting device
for use at the points in a wall or ceiling and under the exigencies mentioned is
provided.
The invention consists of a plaster support and foundation for the corners
of walls and ceilings comprising in its construction a strip or slip of metal or other
material suitable for the purpose, comprising in its construction three wings
or members, two of which are adapted to be secured to the sides of the studding or
wall, and the third to extend out to or in the direction of the corner line, the said
wings or members being perforated or reudered foraminous so that the mortar or
plastering may pass therethrough and become keyed thereon.
The invention also consists of the combination with the foregoing of a straight-
edging device for use in applying the said plaster support so as to secure a true
adjustment of the same in place and a perfectly straight or plumb corner line.
The invention also consists of other improvements in devices of the kind
mentioned, incidental to what bas been herein before mentioned, all as will now be
described and claimed.
Reference is to be had to the annexed drawings and to the letters and figures
marked thereon, forming a part of this specification, the same letters designating
the same parts or features as the case may be wherever they occur.
Of the drawings,
Figure 1 i

page_text: Figure 2 is a horizontal sectional view supposed to be taken through the
corner of a wall or partition, illustrating the method of applying and using the
invention;
Figure 3 is an outside, partially perspective view of what is shown in Figure 1, a
part of the plastering and lathing being pictured as broken away, the better to
illustrate the functions and manner of using the invention;
Figure 4 is a diagram in cross-section, illustrating the manner of employing a
straight edge in the application of the invention to the corner of a wall or other
structure so as to secure a perfectly straight or plumb corner line;
Figures 5 and 6 show in plan, modified forms of the invention as illustrated in the
other views.
. In the drawings, A designates what may be supposed to be the framing
or studding at the corner of a wall, partition or ceiling. B designates the ordinary
lathing and C the plastering.
It is at the corner of the structure that the invention is called for and employed,
the said invention consisting of a strip or slip of metal embracing in its construction
three members, wings or branches, two a a of which are adapted to be secured by
means of staples s or other suitable fastenings to the sides of the studding or wall,
and the other b of which is formed as a fin so as to extend out to or in the direction
of the corner line c. The wings or members a b are perforated as at d or otherwise
rendered foraminous, so that the plastering may ooze or be pressed therethrough
and keyed on the device, though in some instances the perforations in one or
another of the members may be omitted without materially affecting the functions
of the invention.
In order to maintain the fin or member b in exact alignment with the corner
line c and hold it against distortion while the strip is being nailed or otherwise
secured in place, the said member is secured in a straight-edge clamp of suitable
form and construction, such, for example, as is shown in Figure 4, in which the
member bis inserted in a groove e formed in the straight-edge clamp and clamped
and held therein by means of a bolt g and thumb nut has will be readily
understood. The invention will be so held while being secured in position
on the
wall or studding, and then removed, leaving the member 6 in exactly the position
desired. This is an important feature of the invention, since in many instances it
is essential to perfect work that the outer edge of the member b should be in exact
alignment with the corner line c.
The device may be made by bending a strip of sheet metal longitudinally upon
itself to form the member and bending outwardly the two side portions to form
the member a; or the device may be cast or otherwise made of a single part.
When formed as first described for the purpose of strengthening or stiffening the
structure, the doubled parts of the member b may be bent outwardly and back, as
at i, in Figure 5, or they may not be brought close together as is shown in
Figure 6. These latter forms also afford enhanced means for keying the mortar on
the strip.
The perforations d may be of any form suitable to the purpose, and the wings or
members a may be bowed or irregular in form in cross section, so as to admit the
mortar or plaster behind them, as has been shown with respect to the member b in
Figure 5.
The member or fin 6 may be substantially flat, so that the plaster can be brought
to its extreme edge, and practically exposes little or none of the metal, since
it covers to all intents and purposes all the surface of the member or fin.
The wings or members a are continuous, that is to say that while they are
perforated, each extends unbroken along the wall.
By the employment of this invention, a perfect corner line may be formed, the
plaster maintained in place and held against cracking or scaling off, and the
device may be constructed at a minimum cost or expense and be applied with
the utmost readiness and exactness.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
1. A corner plaster-supporting strip or lath comprising in its construction three
continuous longitudinally extended members, two of which are adapted to be
connected with the walls of a structure, and the third finlike member of which
extends out on a line coincident with the corner line.
2. A corner plaster-supporting strip or lath, comprising in its construction three
longitudinally extended members, two of which are adapted to be connected with
the walls of a structure, and the third to extend out on a line coincident with the
corner line so as to receive and support the plaster, the latter member being formed
as a fin by doubling a strip of material longitudinally upon itself, and the former
members by bending the side portions of said strip outward.
3. A corner plaster-supporting strip or lath comprising in its construction three
continuous longitudinally extended members, two of which are adapted to be
connected with the walls of a structure, and the third to extend out on a line
coincident with the corner line, the said members being perforated to receive and
key the plaster therein.
4. A corner plaster-supporting strip or lath comprising in its construction three
longitudinally extended members, two of which are adapted to be connected with
the walls of a structure, and the third to extend out on a line coincident with the
corner line to receive and support the plaster, the latter member being composed of
two parts forming a fin, separated as described.
5. A corner plaster-supporting strip or lath comprising in its construction three
longitudinally extended members, two of which are adapted to be connected with
the walls of a structure, and the third to extend out on a line coincident with the
corner line, combined with a straight-edge clamp to clamp and hold the latter
member in line and place while the former are being secured in position.
Dated this 18th day of May 1896.
WM. P. THOMPSON & Co.,
Agents.