Improvements in Combination Latches.
Year: 1889

page_text: Date of Application, 30th Jan., 1889
Complete Specification Left, 29th Oct., 1889-Accepted, 14th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in Combination Latches.
I, ANDREW CASHIN, of the firm of Joseph Payton & Co., of 54, Walsall Street,
Willenhall, Staffordshire, Manufacturer and Merchant, do hereby declare the nature of
this invention to be as follows:-
This invention has reference to what are known as "combination latches" in which
the latch is made up of two or more levers side by side jointed at or near one
end inside the latch casing and through which latter their free ends project to
engage with the catch plate.
Heretofore such latches have been constructed so that the said levers can only be
lifted by turning the knob or handle in a certain direction and their construction
has necessitated the keyhole being comparatively near to the front rim of the latch.
The objects of this invention are to provide means whereby the said levers forming
the latch can be lifted by turning the knob or handle in either direction that is either
towards the right or left hand and so as to enable the key hole to be placed at a
greater distance from the front rim of the latch.
In carrying out this invention an upwardly projecting arm is provided on one of
the said levers (and by preference on the back or what is generally known as the
"bottom" lever) this arm having a slot through which the spindle of the follow
passes. The top of the said arm projects forwards and is by preference flat under-
neath and fits on to the top of the follow which latter is provided with double horns
one on either side. The said lever having the projecting arm is provided with a
projecting cross pin underneath the other levers.
When the follow is turned either to the right or left hand by the knob or handle,
one or other of the horns of the follow lift the forwardly projecting part of the arm
and the lever with which it is formed or connected, and the projecting cross pin
taking under the other levers lifts them also. There is thus provided a double lifting
action to the levers instead of a single one as in ordinary combination latches, and
by the follow with its knob or handle being placed above the levers the key hole
can be brought further from the front rim of the latch.
Dated this 29th day of January 1889.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Combination Latches.
I, ANDREW CASHIN, of the firm of Joseph Payton & Co., of 54, Walsall Street,
Willenhall, Staffordshire, Manufacturer and Merchant, 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. :-—
This invention has reference to what are known as combination latches in which the
latch is made up of two or more levers side by side jointed at or near one end inside
the latch casing and through which latter their free ends project. to engage with the
catch plate.
Heretofore such latches have been constructed so that the said levers can only be
lifted by turning the knob or handle in a certain direction and their construction has
necessitated the key hole being comparatively near to the front rim of the latch.
The objects of this invention are to provide means whereby the said levers forming the
latch can be lifted by turning the knob or handle in either direction, that is either
71

page_text: towards the right or left hand, and so as to enable the key hole to be placed at a
greater distance from the front rim of the latch.
In carrying out this invention, an upwardly projecting arm is provided on one of
the said levers (and by preference on the back of what is generally known as the
"bottom" lever) this arin having a slot through which the spindle of the follow passes.
The top of the said arm projects forward and is by preference flat underneath and
fits on to the top of the "follow" which latter is provided with double horns one on
either side. The said lever having the projecting arm is provided with a projecting
cross pin underneath the other levers.
On the accompanying drawings Fig. 1 is a general view of a combination latch
embodying my improvements; Fig. 2 is a back view of the same with the cover
plate removed; Fig. 3 is also a back view of the same with the back plate and some of
the levers removed so as to shew that lever which has the projecting arm; Fig. 4 is a
sectional plan of the same; Fig. 5 is also a back view of the same with all the levers
removed so as to shew the bolt at the back thereof; Fig. 6 is a separate view of that
lever which has the upwardly projecting arm, and Fig. 7 represents in plan, side,
and front elevations, the "follow" by which the levers are lifted.
The same letters of reference indicate the same parts in all the figures of the
drawing.
•
a is the latch casing, b is the removable or cover plate of the same, c is the knob :
by which the latch is lifted from the inside of the door, and d is the key for lifting
the latch from the outside in the usual manner, and for operating the bolte and bolt
lever e¹ by which the latch is locked. In the example illustrated the latch is made up
of five levers marked repectively ƒ and g¹, g³, 93, 9. These levers, with the exception
of that marked, are of the usual kind turning on a fulcrum pin h and each provided
with a spring i for pressing the lever downwardly. The lever f also turns on the
pin and is provided with the upwardly projecting part f' which is slotted at j for
the spindle of the follow to pass through. The top part 2 of the arm fl projects
forward as shewn and fits on to the top of the follow which is provided with
double horns or arms marked * * one on either side. is the projecting cross
pin formed on the lever and projecting therefrom underneath the levers g³, g³, 9³, 9³,
so that when the lever is lifted these levers resting on the pin will be lifted also.
The spindle of the follow passes through the lock casing and also takes a bearing
at 61 in the plate b. The knob is fixed on to the projecting end of the
spindle A¹.
When the follow k is turned either to the right or left hand by the knob or
handler, one or other of the horns k³ of the follow k will bear against the
forwardly projecting part of the arm f¹ and lift it and the lever f with which it
is formed or connected, and the projecting cross pin 7 taking under the other levers
will lift them also. There is thus provided a double lifting action to the levers
instead of a single one as in ordinary combination latches, and by the
follow k with its knob or handle c being placed above the levers, the key hole for
the key d can be brought farther from the front rim of the latch, which is an
advantage as when the latch is fixed on a door it gives more room for the hand in
turning the key.
The accompanying drawings illustrate what I consider to be the best way for
carrying my invention into effect but it is to be understood that the said invention
is not limited to the precise details illustrated as the upwardly projecting arm f¹
and the pin instead of being formed on the back or bottom lever as in the example
illustrated might be formed on the front or either of the other levers as will be
readily understood.
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. In combination latches, the employment of a double horned "follow" above
the levers of the latch in combination with an upwardly projecting arm on one or

page_text: "
more of the said levers with which the said " follow
engages and by which the
said levers will be lifted when the "follow" is turned either to the right or left
hand substantially as hereinbefore set forth.
2. In a combination latch the employment of the double horned "follow" k
above the levers of the latch in combination with the upwardly projecting arm f¹ and
the pin on one of the said levers these parts being arranged substantially as and
for the purposes hereinbefore described and illustrated by the accompanying
drawings.
or more of the
3. In combination latches, the employment of a "follow" above the levers of the
latch in combination with an upwardly projecting arm on one
said levers with which the said "follow" engages and by which the said levers will
be lifted when the "follow" is turned substantially as hereinbefore set forth.
Dated th: DOLL
1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
wwwwww
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.