Improved Method of Manufacturing Globe or Shade Holders.
Year: 1893

page_text: Date of Application, 8th July, 1893
Complete Specification Left, 9th Apr., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improved Method of Manufacturing Globe or Shade Holders.
JOHN HOWARD Ross 30 Crompton Road Handsworth Birmingham, Lighting
Engineer, do hereby declare the nature of this invention to be as follows:-
An improved method of securing or fastening globe or shade holder arms to the
centre without the use of solder, and consists in forming the holder arm with a
notch to fit on to the centre and a hole or holes along the arm on line with the said
notch or centre, to receive projections from the centre either from one or both sides
of the arm, the said projections being formed to act as rivets when pressure is
brought to bear upon them by tools in a press and thus secure the arm to the
centre, or, made to interlock or dovetail with each other within the hole or holes in
arm, by the pressure of tools in a press as is commonly used for this class of work
or by any other suitable & convenient method.
Dated this Seventh day of July 1893.
COMPLETE SPECIFICATION.
Improved Method of Manufacturing Globe or Shade Holders.
JOHN HOWARD Ross 30 Compton Road, Handsworth Birmingham 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:-
An improved method of securing or fastening globe or shade holder arms to the
centre without the use of solder and consists in forming the holder arm with a
notch to fit on to the centre and a hole or holes along the arm on line with the said
notch or centre, to receive projections from the centre either from one or both sides
of the arm, the said projections being formed to act as rivets when pressure is
brought to bear upon them by tools in a press and thus secure the arm to the centre
or made to interlock or dovetail with each other within the hole or holes in arm by
the pressure of tools in a press as is commonly used for this work or by any other
suitable and convenient method.
In the accompanying drawings
Fig. I is a part of a holder centre shewing the construction of one of the parts
into which an arm is fitted and secured.
Fig. II is a side view of a holder arm shewing construction of end which is
secured to centre.
Fig. III shews the top view of part of centre and top edge view of arm closed
into it.
The method of securing the arm to the centre is as follows.
The end of arm Fig. II having the slot C and notch D is fitted between the
parts A and B Fig. I in such a manner that the notch D fits over part E of centre
while the slot C fits over the inward projecting part of A. A and B are then
pressed together until the projecting parts of A and B interlock and fill the space C
as shewn in Fig. III by the dotted lines, the projecting parts of A and B should
be a little longer than the thickness of the metal in the arm and slightly under cut
at neck as shewn so that the pressure causes the ends of the projecting parts to
Price 8d7

page_text: expand and fill the undercut parts, causing them to interlock securely in and fill the
space C of arm.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, what I claim is :—
The method of securing arms of a globe or shade holder to the centre substantially
as described and as illustrated in the accompanying drawings.
Dated this Seventh day of April 1894.
JOHN HOWARD ROSS.