Improvements in Indicating Bolts.
Year: 1892

page_text: Date of Application, 16th Dec., 1892
Complete Specification Left, 16th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Indicating Bolts.
I, EDWIN HYATT WARDEN of 17 Whitby Road, Balsall Heath in the City of
Birmingham, Commercial Traveller, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to that class of bolt for doors in conjunction with
which are mechanical arrangements so constructed that the propelling and with-
drawing of the shoot, bar, or rod of the bolt will cause the words "Engaged" and
"Vacant" or other desired words of indication to be exposed and hidden alternately.
The invention is applicable to ordinary door-bolts and also may be applied to
the sliding bolt in rim locks and latches.
The bolt and indicator are constructed as follows.
The shoot or rod of the bolt is placed in its barrel or other suitable guide or carrier ;
to the back of it is attached by means of a pin passing through a horizontal slot in
the plate which carries the barrel, another plate in or on which is an inclined slot
or groove, so that when the bolt is shot or withdrawn this plate with inclined slot
or groove travels with it.
The indicator consists of a curved plate carried in a casing on the opposite side
of the door to that upon which the bolt is fixed. This curved plate is supported
at its ends by pins or bearings upon which it can turn. The front of the casing is
open so as to expose a portion of the curved plate, upon which exposed portion the
desired word, such as "Vacant" is indicated. At the back of the curved plate is
a pin or lever bar projecting through a perpendicular slot cut through the door and
thus passing into the before named inclined slot or groove in or on the plate at the
back of the bolt, so, that, if the pin or lever is placed so as to enter the bottom of
the slot or groove in the plate at the back of the bolt, propelling the shoot of the
bolt will cause the pin to rise and thus turn the curved plate so as to cause the
word previously exposed to be hidden behind the casing and another portion of
the curved plate to be exposed, upon which portion the word "Engaged
desired may be indicated.
"
or other
The inclined slot may be formed, either, so that propelling the bolt will raise
the end of the pin or lever in the inclined slot or groove and so give the curved
indicating plate a downward movement; or so that propelling the bolt will give an
upward movement to the curved indicating plate.
Dated this 15th day of December 1892.
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Indicating Bolts.
I EDWIN HYATT WARDEN of 17 Whitby Road, Balsall Heath, in the City of
Birmingham, Commercial Traveller 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, reference being had to the accom-
panying drawings and the letters and figures marked thereon:-
This invention has reference to that class of bolt for doors in conjunction
with which by mechanical arrangements so constructed that the propelling and

page_text: "
withdrawing of the shoot, bar or rod of the bolt will cause the words "Engaged" and
"Vacant
or other desired words of indication to be exposed and hidden alternately.
The invention is applicable to ordinary door bolts and also may be applied to the
sliding bolt in rim or other locks and latches.
I will now explain my invention with the aid of the accompanying drawings on
which the similar letters of reference refer to similar parts.
Fig. 1 shews a cross section of the holt attached to a door.
Fig. 1 shews a cross section of a bolt without a back plate.
Fig. 2 is a view of the plate outside the door shewing the word "Engaged'
exposed.
"
Fig. 3 is a view of an ordinary bolt having a plate as shewn at Fig. 4 attached at
the back for the purpose of receiving the lever bar of the indicator.
Fig. 5 shews an end view of an ordinary lock or latch in combination with the
indicator.
Fig. 6 is a view of part of the latch shewing the bolt and Figures 7 & 8 show
front and side views of the bolt arrangement.
The shoot or rod (a) is placed in the barrel (6) or other suitable guide or carrier;
to the back of it is attached by means of a pin, pins or other fastenings (p) passing
through a horizontal slot or slots in the plate (c) which carries the barrel, another
plate () in or on which is an inclined slot or groove (e). So that when the shoot
or rod (a) is withdrawn this plate () with the inclined slot travels with it, or the
bolt may be constructed without a back plate (c) having the plate (f) with the
inclined slot or groove (e) attached to the shoot or rod (a) as shewn in Fig. 1^.
The indicator consists of a curved plate (g) carried in a casing (h) on the
opposite side of the door (s) to that upon which the bolt is fixed. This curved
plate (g) is supported at its ends by pins or bearings (i) Fig. 5. upon which it can
turn. The front of the casing is open at (¹) so as to expose a portion of the
curved plate (g) upon which exposed portion the desired word such as Engaged"
is indicated.
66
At the back of this curved plate (9) is a pin or lever bar (j) which may or may
not be jointed fastened by means of the pin (t) at one end and projecting through
a slot () cut in the door and passing into the before named inclined slot or
groove (e) in the plate (f) at the back of the bolt so that propelling the shoot (a)
of the bolt will cause the pin (5) to rise and thus turn the curved plate (9) so as to
cause the word previously exposed to be hidden behind the casing, and another
portion of the curved plate to be exposed upon which portion the word "Vacant
or other desired word may be indicated.
"
The inclined slot may be formed either so that propelling the shoot or rod (a)
will raise the end of the pin or lever (j) in the inclined slot or groove (e) and so
give the curved indicating plate a downward movement or it may be constructed
so that propelling the rod will give an upward movement to the curved indicating
plate (g).
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 construction of bolts for indicating purposes substantially as set forth
herein and illustrated by the accompanying drawings.
2. The construction of indicating bolts as herein described and illustrated in
combination with rim and other locks and latches.
Dated this 15th day of September 1893.
EDWIN HYATT WARDEN,
Applicant.
Henry F. Talbot,
7, Cherry Street, Birmingham, Agent for the Applicant.