Improvements in Bolts for Emergency Exit Doors and the like.
Year: 1892

page_text: Date of Application, 1st Jan, 1892.
Complete Specification Left: 30th Sept. 1892 -Accepted, 10th Dec. 1892.
PROVISIONAL SPECIFICATION.
Improvements in Bolts for Emergency Exit Doors and the like.
I, FREDERICK HOWARD COLLINS of 26 Cumberland Street Birmingham
Brassfounder do hereby declare the nature of this invention to be as follows:
T #
I fix on the face of the swinging style of each door 2 rods or bolts of iron brass
or other suitable material moving in the necessary guides & shooting top and
bottom into keepers fixed to the head & sill of the door frame. About the centre
of the door (or shoulder high) I fix an action which engages with the ends of the
rods & actuates them.
The action consists of a push piece & 2 cranked levers.
The push is a "tablet" of suitable size having the word PUSH plainly displayed
thereon at the back of the tablet is a spindle sliding in guides & having a collar
thereon which engages with the vertical ends of the cranked levers.
The cranked levers are placed vertically in the action box one over the other
the vertical arms of each engage in the collar on the spindle of the push piece, and
the horizontal arms acts on the ends of the rods.
Or if increased power to move the bolts be desired I fix the "tablet" to the
free end of a lever & at any required leverage I fix 2 links which I connect to the
vertical ends of the levers.
When a crush or panic takes place the first person reaching the door drives in
the "push" piece which either by the collar or links acts on the vertical arms of
the cranked levers & thus withdraws the rods leaving the door free to open out-
wards; but if too dazed to drive in the "push" piece the pressure of the shoulder
or arm against it effects the same result.
Dated this 31st day of December 1891.
FREDERICK HOWARD COLLINS.
COMPLETE SPECIFICATION.
Improvements in Bolts for Emergency Exit Doors and the like.
]; FREDERICK HOWARD COLLINS of 26 Cumberland Street, Birmingham
Brassfounder 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 :-
I fix on the face of the swinging style of each door, 2 rods or bolts A. A' of
iron or brass or other suitable material moving in the necessary guides & shooting
top & bottom into keepers fixed to the head & sill of the door frame.
About the centre of the door (or shoulder high) I fix an action which engages
with the ends of the rods and actuates them.
The action consists of a push piece "C" (or its equivalent) & 2 cranked
levers "D & D¹."
The push is a tablet "C" of suitable size having the word "push" or a word of
like meaning, plainly displayed thereon, at the back of the tablet is a spindle "C1"
sliding in guides & having a collar thereon "C" which engages with the vertical
ends of the cranked levers see drawing "No. 1," or at the back of the tablet a
lever is fixed "C" which is connected by links "C', C" to the vertical ends of
the cranked levers see drawing "No 2."
The cranked levers are placed vertically in the action box and are marked "D:D1"
in drawings their vertical arms are connected with the "push" as described & their
Price Adl

page_text: horizontal arms or ends engage with the rods or bolts as shewn in drawings
Nos. 1 & 2. The dotted lines show the positions when bolts withdrawn.
Drawing No. 3 shows the front of the tablet.
I do not bind myself to the particular forms shewn on the drawings, and either of
the bolts & cranked levers may be dispensed with if desired.
When a crush or panic takes place the first person reaching the door presses
against the "PUSH" tablet & withdraws the bolts "A, A'," by the action of the
cranked levers, leaving the door free to open outwards, or if too dazed the pressure
of the shoulder or arm against the tablet effects the same result.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The arrangement of cranked levers operated by the "push" & thus withdrawing
the bolt or bolts substantially as described & drawn.
Dated this 29th day of September 1892.
FREDERICK HOWARD COLLINS.