Improvements in Locks for Doors.
Year: 1891

page_text: Date of Application, 18th Mar., 1891
Complete Specification Left, 12th Dec., 1891-Accepted, 18th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Locks for Doors.
EDWARD WILLIAM HUTCHINGS 89 Springfield Wellington Somerset, Carpenter,
JAMES HUTCHINGS 89 Springfield Wellington, Somerset, Fitter, do hereby declare
the nature of this invention to be as follows:-
A new press down lever for sliding bolt for doors. The door is opened by a
very slight pressure on the knob or handle no matter which side of the door
you are.
Our invention is an improvement for working the sliding bolts or fastenings
for doors in connection with mortise and other locks now in use on doors.
Instead of twisting the knob to open the door, it is worked by simply pressing
down the knob on either side of the door.
Dated this 16th day of March 1801
EDWARD W. HUTCHINGS.
JAMES HUTCHINGS.
COMPLETE SPECIFICATION.
Improvements in Locks for Doors.
EDWARD WILLIAM HUTCHINGs of 89 Springfield, Wellington, in the County
of Somerset Carpenter and Wheelwright JAMES HUTCHINGS of 89 Springfield
Wellington in the County of Somerset Fitter, 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 :-
Our invention has reference to improvements in locks and similar fastenings
and has for its object the doing away with the revolving motion of knobs or
handles and substitutes for this motion verticle motion of a handle or lever.
In order that our said invention may be fully understood we shall now proceed
more particularly to describe the same and for that purpose shall refer to the
several figures in the annexed one sheet of drawings which are to be taken as part
of the Specification and read therewith, the same letters of reference indicating
corresponding parts in all the figures.
Figure 1. represents a longitudinal sectional elevation of the lock in which
A represents a butting piece attached to the casing P Q R. G is the lever
shown in section. G the square or other suitably shaped hole through which
the lever passes.
BJ is a bell-lever crank or other suitably shaped cranked lever
of which B is the short arm of the lever upon which G the handle lever acts
and J the long arm which gives motion to the bolt of the lock. K is the fulcrum
of the lever B J. F is a bent spring pressing upon the long end of the lever J
and tending by its pressure through the pin E which is fixed to the bolt L M to
keep the said bolt in position when it is required to keep a door fastened, the bolt
when in this position will be hereinafter termed "shot." N is a pin which fits
into the slot and acts as a guide for the bolt L M. E is a pin which is
fixed in the bolt L. M. and is actuated by the long arm J of the lever B J when
the short arm B is depressed by the handle lever G this depression communicates
motion to the long end of the lever J which in turn acts upon the pin E' by which
motion is communicated to the bolt L M which withdraws it from its "shot" position
in doing this the spring F is compressed and when the handle lever G is released
the spring tends to resume its normal position and the bolt is thus "shot." The

page_text: positions G H H and G H'H' show the two positions the handle lever may
occupy when the bolt is withdrawn.
Figure 2. is a transverse section of the lock.
Having now particularly described and ascertained, the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim, is.
The method of withdrawing and shooting the bolt of a lock by depressing
or raising a lever in a vertical direction in the manner as herein before described
and set forth.
i
2. The combination of parts by which this vertical motion given to a lever
affects the withdrawing and shooting a bolt in the manner as hereinbefore described
and set
t forth..
1000
d this 17th day of March 1802.
.
W. M. LLEWELLIN, C.E
15, King Square, Bristol, Agent for the Applicants.