or Improved Apparatus for Manipulating Metal Baths or other Articles Inside and Outside Furnaces during the Process of Enamelling.
Year: 1898

page_text: Date of Application, 19th Dec., 1898
Complete Specification Left, 19th Sept., 1899-Accepted, 9th Dec., 1899
PROVISIONAL SPECIFICATION.
PROVISIONAL SETUITIVATION
New or Improved Apparatus for Manipulating Metal Baths or other
Articles Inside and Outside Furnaces during the Process of
Enamelling.
We, ADAM PURVIS and WILLIAM PURVIS, both of 212, Preston Street, Glasgow,
Scotland, Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to new or improved apparatus for catching, holding and
manipulating metal baths, pipes or other articles so that they may easily be put
into and taken out of heating furnaces, and canted or revolved while hot, during
the process of enamelling; the objects being to effect the work with greater
safety and expedition, and less manual labour than heretofore.
The apparatus for holding, placing in, and taking out the article in the heating
furnace consists of a suspended long lever with devices at one end for holding the
article; the other end being held by the operator. The lever being fulcrumed
horizontally in a chain suspended from an overhead traversing trolly, is thus
easily moved about. The clamping device for grabbing the bath consists of two
angle irons or sets of grab catches each swivelling on a movable stud so as to be
capable of adjusting themselves to the contour of the bath under the rim thereof
so as when raised to lift the bath with them. The movable studs slide in guide
slots in a frame on end of lever, and are moved towards or from each other by
links connected each to one arm of each of two bell cranks pivoted on the frame,
the other crank arms being connected to the end of a rod which extends along
the lever to the operators end where it is fitted to a locking hand lever by which
the rod is quickly reciprocated and the clamps or grab clutches thus (through
the intervention of the aforesaid cranks and links) brought together or separated
respectively to catch or release the article as desired. The table or cradle for
holding the bath or other article while hot and the enamel being applied is pre-
vided with means for easily canting and revolving it. For this purpose the
weighted rocking stem on which the cradle sits is fitted with a long connecting rod
which has at its other end a locking hand lever by operating which the cradle
is canted as desired. For revolving the cradle its bottom is fitted with a horizontal
bevel wheel which gears with another level wheel fitted with and revolved by a
sprocket wheel gearing by an endless chain with another chain-wheel having a
handle located near the aforesaid canting hand lever, so that the one operator can
work either the canting lever or revolving handle as desired. In lieu of bevel
tooth wheels, spurs and pinions may be used. The cradle may have adjustable
folding catches to keep the article thereon steady.
Dated this 17th day of December 1898.

page_text: New or Improved Apparatus for Manipulating Metal Baths or other
Articles Inside or Outside Furnaces during the Process of
Enamelling.
We, ADAM PURVIS and WILLIAM PURVIS, both of 212, Preston Street, Glasgow,
Scotland, Engineers, 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 new or improved apparatus for catching holding and
manipulating metal baths, pipes or other such like articles, so that they may be
easily put into and taken out of heating furnaces and canted or revolved while
hot during the process of enamelling; the objects being to effect the work with
greater safety and expedition, and less manual labour than heretofore.
And in order that our said invention may be properly understood we have
appended the annexed sheet of drawings illustrating same; whereon Fig. 1 is
a side elevation of the apparatus for catching and conveying the article to be
heated into and out of the furnace, Fig. 2 being a plan of holding end of same.
Fig. 4 is a sectional elevation of the apparatus or table for revolving and canting
the hot article while being enamelled; Fig. 5 being an end elevation of part of
same.
As constructed according to our invention, the apparatus for holding, placing
in, and taking out of the furnace the article to be heated, consists of a long tube
lever a Figs. 1 & 2, suspended by the hook b from an overhead travelling device
(not shown). At one end is a double operating handle e fixed thereto for moving
the apparatus and article about. Near same end a locking hand lever d for
operating the catching device) fulcrums on the bolt e and passes through a slot
in the end of a reciprocating rod i inside tube a. The other end of rod i is fixed
to the cross bar f, in both ends of which bar is a pin 7 each working respectively
in a slot in one end of each of the bell-crank levers hj which said levers are
fulcrumed on adjustable studs or pins fixed in slots in each end of a cross bar
or frame fixed by the clamp p on end of tube a. In one end of the cranks h j
is formed a socket or slot, each of which is movably fitted by a pin n with a
stem o formed about mid-way on a clamping or catcher bar m.
The bars m are
so pivotted and formed as to adapt themselves to the contour and under the rim g
Fig. 4 of the bath or other liftable part of the article to be raised. The hand
lever is fitted between two sector plates bolted vertically round the tube a
leaving space between them in which the lever & oscillates. One of the plates r
is notched on top as shewn, in which the locking detents works. The operator
sets the locking lever into the position shewn and clutching the handles c
manipulates the open catchers m under the bath rim or other suitable part of
article to be raised. The lever d is then drawn which draws the rod i and ends
of inner arms of cranks h j inwards; the ends of other arms of said cranks
being thus brought towards each other until the catchers m bear against or adjust
themselves under the rim or desired part of the article to be held, then the lever d
is locked. The apparatus and article held thereby may then be suspended (and
balanced horizontally by an adjustable weight () from the overhead traveller.
The article may then be moved by handles c into the desired position and left
there at, by adjusting weight t and unlocking and pushing the lever d to open
and relieve the catchers m and withdrawing the apparatus.
As shewn at Figs. 4 and 5 the apparatus or table for holding, revolving and
canting the hot bath 7 or other article during enamelling, comprises a flat-metal

page_text: plate 8 bolted on back of a horizontal bevel wheel 9 which bears and revolves on
top part of an oscillatory stem 10 having trunnions or shaft 11 mounted in two
standard frames 12.
The stem 10 is normally kept vertical by having weights 13 thereon, and is
connected by rod 14 with a locking hand lever 15 by operating which the stem 10
and consequently table 8 and article mounted thereon is canted and held in the
longitudinal vertical plane as desired.
For revolving, the table, the bevel toothed wheel 9 gears with another bevel
wheel 16 revolving on shaft 11 and which last said wheel 16 is fitted with and
revolved by a chain or sprocket wheel 17 gearing by an endless chain indicated
by dotted lines 18 with another chain wheel 22 mounted in frame 20 and having
a handle 19 so that one operator can work either it so as to revolve the table, or
the canting lever 15, as desired.
The table (to keep the bath steady) has two catches rocking, in brackets 23 bolted
through slots in table so as to be adjustable. Each bracket 23 in fitted by a
pin 24 with a rocking lever 25 the lower arm 26 of which bends inwards so that the
bath 7 sits between said two lower levers 26 and presses them outwards and the top
arms 25 inwards thus pressing the adjusting holding bars 27 against both sides of
bath 7. Each holder 27 has a connecting stem fitted into its arm 25 similarly to
the catches m already described and shewn in Figs. 1 & 2. A tension spring 29
fitted to arm 25 and bottom of bracket 23 draws the bars 27 outwards when
relieved. To prevent the bath from slipping when much canted the bars 27 may
have slots in which fit adjustable inwardly projecting prongs 30.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. A lifting device comprising a tube a, sectors r, rod i, frame 7, cranks hj
and catchers in all constructed and combined substantially as specified and shewn.
2. A movable table comprising table 8 stem 10, shaft 11, bevel wheels 9, 16,
sprocket 17, brackets 23 and catchers 27 all arranged and combined substantially
as described and shewn.
3. The arrangement, construction, and combination of parts of apparatus sub-
stantially as and for the purposes described and shewn.
Dated the 18th day of September 1899.
D. F. MASON,
Patent Agent, Glasgow,