A Combined Electric Bell Push and Pull.
Year: 1892

page_text: Date of Application, 27th July, 1892
Complete Specification Left, 27th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
A Combined Electric Bell Push and Pull.
I, WILLIAM ROBERT WEBB, of 12, Shaftesbury Road, Hornsey Rise, in the
County of London, Electrician, do hereby declare the nature of this invention to
be as follows:-
My invention relates to a combined electric bell push and pull, that is to say, an
arrangement whereby an electric circuit can be closed for operating a bell either
by pressing a push-knob or button or by pulling a cord or its equivalent.
In carrying out my invention 1 employ a suitable case provided with a push-
button as usual but, in place of the ordinary contact spring having its free end
normally pressing against the button, 1 turn up the end thereof so as to form a
double spring. The inner face of the press-button is recessed so as to pass over
the spring, whereby the button is prevented from turning, and to the turned-up end
of the spring attach a cord or its equivalent. A contact piece is fitted behind the
turned-up portion of the contact spring so that while the spring can be operated
by pressing the button as usual contact can also be made by pulling the cord.
Dated this 7th day of September 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
A Combined Electric Bell Push and Pull.
I, WILLIAM ROBERT WEBB, of 12, Shaftesbury Road, Hornsey Rise, in the
County of London, Electrician, 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 :-
My invention relates to a combined electric bell push and pull, that is to say, to
an arrangement whereby an electric circuit can be closed for operating a bell either
by pressing a push-knob or button or by pulling a cord or its equivalent.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
Figure is an clevation of a combined electric push and pull constructed
according to my invention; and,
Figure 2 is a view similar to Figure 1 but with the cap removed:
Figure 3 is a section on the line 3-3, Figure 1 :
Figure 4 is a section on the line 4-4, Figure 3:
Figures 5 and 6 are respectively an elevation with the cap removed and a
vertical section illustrating a modification of my invention.
Similar letters of reference indicate corresponding parts in the several figures.
a is the foundation plate of my combined push and pull, and is the cap or cover
forming with the said plate a the case.
c is the contact spring against which the button d operates and to which the
cord e is attached, and is the contact piece fixed to the casing and against which
the contact spring makes contact when the said spring is operated either by the
button or by the cord.
In the arrangement of my invention shewn in Figures 1 to 4, the contact spring e
has its free end against which the button d acts turned up as at c', the cord e being
attached to the said turned-up end. With this arrangement it will be understood

page_text: that either the pushing of the button d or the pulling of the cord e will bring the
turned-up end c into contact with the contact piece. The contact spring c shewn
in the said Figures 1 to 4, is located in a recess in the foundation plate a, the
cover b being a plain piece of metal screwed onto the said plate a in order to cover
the recess containing the spring, a hole being formed in this plate for the press-
button which is recessed at the back to fit over the spring c, whereby it is
prevented from turning,
In the modification of my invention shewn in Figures 5 and 6, the contact piece /
has one end extended, as at 1, and adapted to make contact with an extension c¹
on the contact spring c. As shown the cord e is connected to the extension f¹ so
that the pulling of the said cord causes the said extension to make contact with the
extension of the spring and thereby complete the circuit. If desired, however,
the extension may have the cord connected to it in such a manner that it can be
moved to make contact with the extension f¹.
In this last modification the cover
manner.
is screwed onto the plate a in the ordinary
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 combination with an electric bell-push, of an extension having a cord or
the like connected thereto in such a manner that when pulled it will make a
metallic contact and so complete the circuit, substantially as described.
2. The manufacture and use of the combined electric bell push and pull herein-
before described and illustrated in Figures 1 to 4 and in Figures 5 and 6 of the
accompanying drawings.
Dated this 27th day of April 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.