Improvements in Pivots and their Fittings for Pivotedly Hung or Swing Windows, or Window Sashes, Fanlights, Louvres, Dumb- waiters, Looking-glasses, and other Frames and Articles.
Year: 1889

page_text: Date of Application, 12th Apr., 1889
Complete Specification Left, 13th Jan., 1890-Accepted, 22nd Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in Pivots and their Fittings for Pivotedly Hung or
Swing Windows, or Window Sashes, Fanlights, Louvres, Dumb-
waiters, Looking-glasses, and other Frames and Articles.
We, ALFRED BROWN and HENRY CLARKE PRUCE trading as Alfred Brown and
Company of Newhall Street in the City of Birmingham Merchants and Manufacturers
do hereby declare the nature of this invention to be as follows :-
This invention relates to the pivots, or joint centres, of pivotedly hung windows,
window sashes, frames, fanlights, louvres, and other articles requiring to swing upon
joint, or pivot centres, as hereinafter described.
Usually, the inner end of the pivot has a large conical head, which fits within a like
countersunk recess in the carrier plate, let within the inner side of the sash; and in
consequence of which, the stem of the said pivot has to be reduced in diameter, to the
size required, from that of the original diameter, viz., the head.
The object of our invention is to reduce the cost of making the said pivot and
fittings, by connecting the screwed inner end to the carrier plate, without a head, or
with a head so small, that it is practically immaterial in the cost of production; and
further, by making the pivot stem in one piece with the carrier plate, the cost is also
reduced.
In carrying out the first part of our invention, we furnish the inner end of the
pivot stem, with a taper screw to the extent of about three eighths of an inch, which
is made to take into a like taper screwed hole, passing through a centrally disposed
boss at the rear of the carrier plate, which is made of the shape of three circles joined
together; so that the recessing of the said plate within a sash, is made by centre bits
instead of by mortising tools. Thus, three holes are drilled in a line, and in juxta
position to each other, which thus makes a recess, wherein the said pivot plate has only
to be dropped, and there affixed by screws without the troublesome process of
fitting.
When in use, the pivot stem is secured to its carrier plate, and placed in position'
from the inner side of the sash, next to the glass, and with the plain part of the stem
passing through the bearings of a sash bracket, and frame bracket respectively; so
that the first is mounted within the sash, and with its end taking within a bearing
sleeve of the frame bracket, wherein it is disposed and works.
In carrying out the second part of our invention, we make the carrier bracket, rear
boss and pivot stem all in one piece, either by stamping between top and bottom tools,
or the casting process. The making of the two parts in one piece is a disideratum in
their manufacture.
Or the carrier bracket may be made separate from the pivot stem, and secured
together by riveting the inner end of the said stem into a hole sunken within and
through the carrier bracket.
The plates of the whole of the bearings are made of the shape of triple circles, joined
together, so as to admit of its recessing within the woodwork of a sash, or frame, by
centre bit boring.
The application of our invention to the mounting and suspending of other articles as
aforesaid, differs in no essential respect from its application to a swinging sash frame
as herein described.
Dated this Eleventh day of April 1889.
ALFRED BROWN.
HENRY CLARKE PRUCE.
By Henry Skerrett,
Agent for Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Pivots and their Fittings for Pivotedly Hung or
Swing: Windows, or Window Sashes, Fanlights, Louvres, Dumb-
walters, Looking-glasses, and other Frames and Articles.
We, ALFRED BROWN and HENRY CLARKE PRUCE, trading as Alfred Brown and
Company of Newhall Street in the City of Birmingham, Merchants and Manufacturers
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 the pivots or joint centres of pivotedly hung windows,
window sashes, frames, fanlights, louvres, and other articles requiring to swing upon
joint or pivot centres, as hereinafter described.
In carrying out one form of our invention the inner end of the pivot stem, is taper
screwed to the extent of about three eighths of an inch, and is adapted to take into a
like taper screwed hole passing through a centrally disposed boss at the back side of
the carrier plate, which is made of the shape of three circles joined together.
This said carrier plate is adapted to fit within like shaped recesses made within the
edge of a sash, by means of a centre bit, instead of by mortising tools.
Thus three lineable holes are sunk to form the recess and wherein the pivot-carrying
plate is dropped and there affixed by small screws without the troublesome process of
fitting.
When in use the pivot stem is secured to its carrier plate, and placed in position
from the inner edge of the sash, next to the glass, and with the plain part of the stem
passing through the bearings of a sash bracket and frame bracket respectively; so
that the pivot stem is fitted and fixedly secured through the sash, and with its plain
end taking and turning within a bearing sleeve of the frame bracket.
In carrying out the second part of our invention, we make the carrier plate, rear
boss, and pivot stem, all in one piece, either by stamping between top and bottom dies,
or by casting the said intrigal parts in a sand or other mouid.
Or the carrier bracket may be made seperate from the pivot stem, and secured to-
gether by riveting the inner end of the said stem into a hole made through the middle
of the said bracket.
The plates of the whole of the bearings are made the shape of triple circles, joined
together, so as to admit of its recessing within the woodwork of a sash, or frame, by
centre bit boring.
The application of our invention to the mounting and suspending of other articles
as aforesaid, differs in no essential respect from its application to a swinging sash
frame, as herein described.
Figure 1 of the accompanying drawings, represents partly in vertical section, and
partly in elevation, a pivot bearing and fittings, constructed arranged and put together,
according to one form of our said invention. The said pivot bearing, and fittings is
shown applied to a pivotedly hung sasb.
Figure 2 represents a complete sash, alike unto figure 1, provided with fittings and
pivots, made according to the form figure 1 of our said invention.
Figure 3 represents an elevation and end view of the pivot bearing.
Figure 4 represents a section and end elevation of the pivot centre carrying plate
or bracket, and from which it will be seen, that the conformation of the said plate,
resembles in form three circles, running one within the other at their junctions, and
by which form, the said plate, admits of being let into the edge of a sash, by making
three corresponding holes, by means of a centre bit.
Figure 5 represents a front elevation, and edge view of the frame bracket, that is, a
plate, let into the outer edge of the sash, and wherethrough the outer end of the stem
of the pivot axis passes.
Figure 6 represents a section and front elevation of the bearing plate, let within
the edge of the frame of a sash.

page_text: The same letters of reference, indicate corresponding parts in the several figures of
the drawings.
a is a pivot axis, with a plain and parallel stem a², and a³, is a taper wormed outer
end, which screws into a like taper hole 6ª made through the middle of the carrier
plate b, and its boss b³.
Fitted within, or to, the outside edge of the sash c, to which the said pivot a, and
fitting b, is fixedly connected, is a frame bracket d, with a hole d, through its middle,
wherethrough the stem of the pivot, outwardly passes, and takes and turns within the
plain hole e, of the sleeve e, of a bearing bracket e, let into, and then secured to the
edge of the frame f, by small screws g.
The other bracket and plate b, and d, are also affixed in position, by small screws g.
It will be seen, that the countersinks and holes for the screws of the plates, or
brackets, and pivot respectively, are the centres of the circles, which run into one
another at their meeting parts.
Figure 7 represents another form of my invention, in which the stem, and carrier
plate of it, is made all in one piece. The said figure 7 represents the fittings, as well
as the stem, whilst figure 8 represents the stem separately, of which figure 9 is an end
view of it.
a is the pivot axis or stem, b is the carrying plate of it, made all in one piece,
whilst 63 is a neck or enlargement at the junction of the plate with the stem.
d is a frame bracket, and e. and is a bearing plate, alike in construction, and
fitted and secured, as the first arrangement.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First A pivot stem a', with a taper wormed end a³, adapted to take within a like
taper hole in a carrier plate b, and which parts, are constructed and combined, sub-
stantially as described and set forth in figure 1, 2, 3, and 4.
Secondly: The combination with a pivot stem a', of the plates and brackets b, d,
and e, constructed, arranged, and provided, for the purpose substantially as described
and set forth.
Thirdly-Making the plates or the brackets, of the fittings, as hereinbefore described
of triple circles, running into each other at their junctions, as set forth.
Fourthly-Making the carrier plate of the centre, and also the pivot, in one piece,
as set forth in figures 7, 8, and 9.
Fifthly Connecting the pivot stem of pivot centres as herein described, to their
carrying plates, by riveting, as described.
Dated this 11th day of January 1890.
מחתזי
DRAMAT
ALFRED BROWN.
HENRY CLARKE PRUCE.
By Henry Skerrett,
Agent for Applicants.