Improvements relating to Picture-frames, Borders, and the like.
Year: 1891

page_text: Date of Application, 28th Sept., 1891-Accepted, 31st Oct., 1891
COMPLETE SPECIFICATION.
Improvements relating to Picture-frames, Borders, and the like.
A communication from ERNST ROCKHAUSEN, of Waldheim, Saxony, in the
German Empire, Wood-carver.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of
Middlesex, M.I.M.E., 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 to produce borders for picture frames, cornices
and the like, with mouldings, beads and other projecting parts covered with metal.
Borders produced by this process in addition to their pleasing appearance offer the
advantage of being stronger than other similar articles hitherto produced by partly
gilding over wooden borders. Sheet metal whether plain, embossed or perforated,
the use of which is involved in this process, enable very tasteful articles to be
obtained and the ornamental effect to be extensively varied. It will of course
depend on the color of the wood whether nickel, brass, copper or other metal is
employed. The process consists in causing the borders together with the sheet
metal applied to them to pass through draw-plates corresponding in contour to the
borders i.e. provided with partly flat and partly curved surfaces, projections,
rounded beads or sharp edges as the case may be, the metal passing through
gradually curved grooves as will be better understood by reference to the
accompanying drawing in which
Figs. 1 to 3 are sections of a border or piece of moulding in the act of being
passed through the draw-plates and representing it in three different stages of
the process.
Fig. 4 is a plan of the lower part of the draw-plate.
Fig. 5 is a longitudinal section of the draw-plate, and
Fig. 6 is a section on an enlarged scale of a finished border or piece of moulding.
It is in this instance assumed that the two beads za of a border are to be
covered with sheet metal. The draw-plates a a¹ used for this purpose present
exactly the shape of the border in question save as regards the grooves 66 into
which enter the beads or mouldings of the border. These grooves at the entrance y
Figs. 4 and 5 of the draw-plates have flat surfaces and are of the same width as the
strips of sheet metal which are to cover the beads xx Fig. 1. The grooves
gradually merge from a flat to a curved shape (an intermediate degree is shown
in Fig. 2) until it forms a part of a circle surrounding and exactly fitting the bead
to be covered as in Fig. 3. Figs. 4 and 5 also assist in illustrating this gradual
change of form of the groove. At the outlet, the edges of the grooves are formed
into knives so that they trim the metal on either side of the covered bead at the
same time pressing the edges thereof tightly against the joint or angle. The upper
draw-plate a' is preferably bevelled as in Figs. 1, 2 and 5 so as to facilitate the
introduction of the wooden blank or moulding and metal sheet.
The metal sheet is inserted into the draw-plates first and moved on until a piece
sufficiently long to be grasped protrudes. Then the wooden border or moulding is
introduced whereupon both pieces together are with moderate speed drawn through.
The upper plate a tightly compresses or clamps the border into the corresponding
grooves of the other plate. As the metal sheets z advance within the grooves
they are gradually curved as in Fig. 2 and lastly formed into nearly a circle as in
Fig. 3 with sharp knife edges so as to turn the metal round the bead and make it
firmly adhere to it down to the point on each side where it is embedded in the wood
so as to sharply define the limits to which the metal fittings and the plain wood
portions, respectively, extend.

page_text: Fig. 6 shows the ready article on a somewhat enlarged scale.
All the surfaces of the draw-plates being preferably smooth the metal covered
parts will generally require no further finish on issuing therefrom though they may
be polished afterwards if required. It is hardly necessary to say that the con-
figuration of the borders thus produced is capable of practically unlimited
variation.
Having now particularly described and ascertained the nature of the said
invention, as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, I declare that what I claim is ;—
1. The process enabling projecting parts such a
as beads and the like of border
mouldings and similar articles to be covered with sheet metal and consisting in
passing the moulding or the like together with one or more strips of metal through
or between draw-plates provided with grooves which at one end present a flat
surface and gradually assume a curved shape towards the opposite end where they
correspond to the shape of the bead to be covered and have sharp knife-edges so as
to fix and trim the metal edges where they join the wood substantially as set forth.
2. The combination with a moulding or the like of a metal strip applied to a
projecting rib or bead thereof substantially as set forth.
3. Apparatus for applying metal strips to mouldings and the like consisting of a
draw-plate having a groove which at one end is flat and gradually assuming a
curved form until at the other end it practically corresponds with the contour of
the bead or the like to which the metal strip is to be applied substantially as
described and illustrated in the accompanying drawings.
Dated this 28th day of September 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.