Improvements in Apparatus for Working Grabs and the like.
Year: 1898

page_text: Date of Application, 9th Mar., 1898
Complete Specification Left, 8th Dec., 1898-Accepted, 14th Jan., 1899
We, WALTER PITT, Engineer, and STOTHERT AND PITT, LIMITED, Engineers, both
of Newark Foundry, Bath, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the apparatus described in the
Specification No. 842 of 1883.
In this apparatus the lifting chain has fixed to it a flanged ball or the like which
at certain times engages with a pair of forked and weighted levers pivotted to a
tube or ring surrounding the chain. It is found in practice that difficulty is some-
times occasioned by the ball getting between the levers instead of engaging with
their forked ends simultaneously.
According to this invention this defect is overcome by employing only a single
lever the second one being replaced by a fixed lug or projection in the guide tube.
Dated this 8th day of March 1898.
WALTER PITT,
Per pro STOTHERT AND PITT, LIMITED.
WALTER PITT,
PERCY K STOTHER
Managing Directors.
Improvements in Apparatus for Working Grabs and the like.
We, WALTER PITT, Engineer, and STOTHERT AND PITT, LIMITED, Engineers, both of
Newark Foundry, Bath, 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 relates to improvements in the apparatus described in the
Specification No. 842 of 1883.
In this apparatus the lifting chain has fixed to it a flanged ball or the like which
at certain times engages with a pair of forked and weighted levers pivotted to a
tube or ring surrounding the chain. It is found in practice that difficulty is some-
times occasioned by the ball getting between the levers instead of engaging with
their forked ends simultaneously.

page_text: According to this invention this defect is overcome by employing only a single
lever the second one being replaced by a fixed lug or projection in the guide tube.
Figures 1 and 2 are vertical sections at right angles to each other of an apparatus
such as is described in the former Specification but modified in accordance with the
present invention. Figure 3 is a plan of the lower part, the top with the exception
of the forked lever being removed.
a is the forked lever, b is the ball on the chain c which engages with the fork
when it is in the position shown in dotted lines' in Figure 1 and in full lines in
Figure 3. d is the fixed lug in the tube.
The general construction and action of the apparatus is well understood and
requires no description.
The invention is not only applicable to the apparatus described in the former
specification but also to apparatus of a similar class.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, v
, we declare that what
we claim is :-
1. The combination of a single forked lever and a fixed lug or projection
substantially as described.
2. Apparatus for working grabs and the like substantially as described and
illustrated in the drawings.
Dated this 1941
th day of November 1908.
WALTER PITT.
The Common Seal of STOTHERT & PITT,
LIMITED, was affixed in the presence
of
WALTER PITT, \
PERCY K. STOIREET, }
Directors.
THOS. R. GILL,
Secretary.