Improvements in Raising, Lowering, Locking and Unlocking Mechanism.
Year: 1898

page_text: Date of Application, 11th Oct., 1898
Complete Specification Left, 10th July, 1899-Accepted, 9th Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in Raising, Lowering, Locking and Unlocking
Mechanism.
FREDERICK CHARLES LYNDE, St. Ann's Passage, Manchester, Civil and Sanitary
|Engineer, do hereby declare the nature of this invention to be as follows:
My invention consists in improved mechanism for raising and lowering lock-
ing and unlocking or any or all of such either separately or in combination so
as to actuate any thing in connection with this mechanism and lock it in posi-
tion and for unlocking and releasing such thing by reversing or continuing the
motion as may be desired.
The motion need not be in a vertical direction but may be in a horizontal or
any other desired direction.
I will now describe one form of my improved mechanism.
For this purpose I will assume that it is required to lift a body and to lock
it in its raised position by the same motion, then to unlock or release it and lower
the body by reversing the motion.
Upon a suitable foundation provided with two fulcrums I mount two levers,
one end of each of which works in contact with the other. The ends of those
levers are peculiarly shaped so that when properly set upon their fulcrums one
lever when actuated causes the other lever to move into the desired position and
thus raises the body. By continuing this motion the latter becomes locked in
position by reason of the peculiar shapes of the ends of the levers and their rela-
tive positions to each others fulcrums. I do not limit my invention to having
only two levers but may increase their number. Nor do I limit my invention
to the reversing of the motion to unlock and lower, which may be accomplished
by continuing the motion which caused the locking to take place.
Dated this Eighth day of October 1898
FRED. C. LYNDE.
Improvements in Raising, Lowering, Locking and Unlocking
Mechanism.
FREDERICK CHARLES LYNDE, St. Ann's Passage, Manchester, Civil and Sanitary
Engineer, 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 consists in an improved mechanism for raising and lowering
locking and unlocking or any or all of such either separately or in combination

page_text: so as to actuate anything in connection with this mechanism and lock it in posi-
tion and for unlocking and releasing such thing by reversing or continuing the
motion as may be desired, or for the equivalent of the above in over coming a
resistance with similar locking and releasing action.
I will now describe one form of my improved mechanism as applied to lifting
a body locking same in position and lowering the same.
Fig. 2 is a side elevation in section, shewing the apparatus in position ready
to lift a weight or resistance represented by the arrow a
Fig. 1 is a similar view but shewing the position of the levers after the body
has been lifted or the resistance has been overcome.
Fig. 3 is a front view of the apparatus.
To the end of the lever e Fig. 2 the contact between the body to be lifted
or the resistance to be overcome, is made. The levers d¹ and e¹ are mounted upon
the fulcrums and c¹, which are so placed that the peculiar shaped ends of the
levers and g¹ are in contact with one another the whole being mounted upon
a suitable foundation a. By the moving of the lever (Fig. 2) into the posi-
tion shewn in Fig. 1, the end g¹ is forced backwards by the end of lever d
marked until the lever el assumes the position shewn in Fig. 1 by e.
result of this movement is that the lever é becomes locked in position upwards
by the lever as shewn on Fig. 1 by the positions of the portions f and.g. The
weight Fig. 2 has therefore been lifted and locked in position as shewn at r
in Fig. 1.
The
In order to lower the weight
which is moved to the position
tact at f g Fig. 1 and the levers and weight again assume the original position
shewn at Fig. 2.
the reverse motion is necessary of the lever d
Fig. 2. This motion releases the locking con-
Should the lever e maintain itself or be retained by any other cause in the
position shewn in Fig. 1 then upon the lever d being moved into the position,
the portion comes into contact with the portion m of the lever e and the lever e
is thereby forced in a downward direction.
I do not limit my invention to the levers working in a vertical plane as it is
obvious that there are numerous applications where this apparatus may be use-
fully worked in horizontal or other positions.
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 use and manufacture of the improved mechanism substantially as herein
before described and illustrated by the annexed drawing.
Dated this 6th day of July 1899.
FREDERICK CHARLES LYNDE.