Self Adjusting Catch or Pall for Hydraulic Lifts.
Year: 1897

page_text: Date of Application, 21st July, 1897
Complete Specification Left, 29th Oct., 1897-Accepted, 24th Dec., 1897
Self Adjusting Catch or Pall for Hydraulic Lifts.
CHARLES GEORGE WOODFORD No 3 Market Place"Mariner" Red Post Lane East Ham
Essex I do hereby declare the nature of this invention to be as follows:-
A catch or pall acting under the direct control of the Hoisting Gear, consisting of
a Rod attached thereto and passing thro a circular or Square Tube with Discs at each
end. enveloped with a Spiral Spring between the Discs, beneath the Disc is a
timbler connected with the pall at the head. The heel of the pall resting on on a bearing
in the event of the hoisting gear breaking the weight of the Cage acting on the
spring forces the pall outwards top and Bottom into recesses specialy provided for
the same.
CHARLES GEORGE WOODFORD No 3 Market Place Red Post Lane East Ham, Essex
Master Mariner 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:—
A safety catch for lifts acting under the direct control of the hoisting gear consisting
of a rod attached thereto. Passing thro a round or square tube or case, with flanges,
or discs, at each end, and enveloped with a spiral spring, based on the lower flange
or Disc. Beneath which is a tumbler connected with the pawl at the head. The
heel of the pawl resting on a bearing and in the event of the hoisting gear breaking
the weight of the cage acting on the Spring forces the Pawl outwards, Top, and
the bottom into recesses specialy provided for them. And in Construction, the
following shall be the Index to the annexed drawing (a being the case enclosing the
Pawl. (made either square or round. Fixed to the cage in the manner set forth
in Fig. 3. The case being solid both ends a plunger (P) passing thro the centre of
the top of the case which in its action being regulated by. Two Stops. S and S on its
upper end, on the lower end is a flange (f) fixed, filling the inside of the case,
between this flange (f) and the top of case (a) a spiral spring (9) intervenes,
expanding in Fig. 1 on the breaking of the hoisting gear (the plunger (P) being
connected thereto) Contracting in Fig. 2. when bearing a portion of the weight of
the cage. On the lower end of the plunger (P) under the flange (f,) a tumbler (t)
being connected thereto so fitted to. be always in touch with the under side of the
flange (f) on the left hand side, and connected on the right by an eccentric joint (m)

page_text: to the pawl (k) suspended thro a shackle (2) (this also being connected with the
plunger (P). at (x). the heel of the pawl (.k.) resting on a shoot (.o.). which on the
action of the plunger (P). [forces the head of the pawl, (k) out into a slot (n) in
the casing and out at the heel on to the ruffle plate (w). from the bend of the shackle
a bolt (b) passes thro the bottom of the case. having a stop on its end equi distanced
to that between the stops. (S and S) the case being grooved over the ruffle plate (w.)
is guided thereby up and down.
Having now particularly described and
Invention, and in what manner the same is
I claim is
ascertained the nature of my said
to be performed. I declare that what
to the pawl (k) suspended thro a shackle (2) (this also being connected with the
plunger (P). at (x). the heel of the pawl (.k.) resting on a shoot (.o.). which on the
action of the plunger (P). [forces the head of the pawl, (k) out into a slot (n) in
the casing and out at the heel on to the ruffle plate (w). from the bend of the shackle
a bolt (b) passes thro the bottom of the case. having a stop on its end equi distanced
to that between the stops. (S and S) the case being grooved over the ruffle plate (w.)
is guided thereby up and down.
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
Firstly the Pawl and Tumbler
Secondly, Plunger
"
Thirdly Frame work wherein the same operates and encloses the spring, and
pawl. being made of channel Iron (or metal).
Dated this 29th day of October 1897.