Improvements in Apparatus for Coating with Tin, Lead, or other Metals or Alloys.
Year: 1889

page_text: Date of Application, 17th Apr., 1889
Complete Specification Left, 17th Jan., 1890-Accepted, 12th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Coating with Tin, Lead, or other
Metals or Alloys.
I, HENRY FRANCIS TAYLOR, of Tynant, Neath, in the County of Glamorgan,
Engineer, do hereby declare the nature of this Invention, to be as follows:-
These improvements refer to the cradle and nipping apparatus for taking down
the plate to be coated, which is then canted, and for raising it into the nip of
the rolls on the exit side of the pot, such improvements being specially applicable for
self-acting gear,
that is to say, for being worked by machinery so that the attendant
has only to put the uncoated plate into the apparatus, the plate being received in a
coated or finished condition from the exit rolls.
To open and close the nipper hook and retain the plate in the required position I
employ suitable tops or tappets and a rod with spring or weight acting against
notches or faces on the hook or a part connected therewith.
As an illustration I will describe my invention as applied to self-acting gear such
as described in Taylor and Struve's Patent Specification No. 4350 of 1888. What is
therein called the cradle rod H in my present invention receives up and down move-
ment by being connected to the lever B (or any equivalent part in self-acting apparatus
of other constructions) the point of connection to that lever being adjusted according
to the depth of the plate to be coated. In connection with such rod and lever I
provide a rod which I call the tappet rod the upper end of which can be fixed to
some part at the top of the pot but so as to be adjusted according to the depth of the
plate to be coated. This rod has an upper and a lower tappet or stop which act upon
two faces set at an angle on the nipper hook or on a tumbler or short lever which is
in one with the nipper hook or fixed to the pivot of the nipper hook. The plate is
nipped between the latter and the cradle rod. Sometimes I provide a third or inter-
mediate tappet for partially closing the hook in rising. To retain the nipper hook in
the open and closed positions a rod is provided the upper end of which is held in a
yielding manner, say with an adjustable spring, in a projection or eye from the cradle
rod. This rod is formed like a pawl tooth or jointed at its lower end and the hook
or tumbler is recessed or notched for the bottom of the rod to act against and hold
it in the open or closed position on one side or the other of its pivot centre.
When the cradle rod is nearly in its uppermost position the upper face on the hook
or tumbler comes against the upper tappet the latter thus depressing that end of the
hook and raising the nipping part so as to nip the inserted plate ready to take it
down, as required, into the coating material. The cradle is then lowered.
When the cradle with the plate is nearly in its lowest position the nipper book
or tumbler comes against the lowest tappet and the nippers are opened again so that
the plate is released and can be canted and in the rising stroke be entered into the
nip of the rolls on the exit side of the pot.
In another form I provide the nipper hook or tumbler with two upper faces and
provide a rod with a yielding action to act against one face or the other, the tappets
acting against other faces.
Or I joint the said rod to the nipper hook in such a position that the spring or
weight will cause the rod to act on one side or the other of the nipper hook pivot
centre.
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171 1
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$11000

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Coating with Tin, Lead, or other
Metals or Alloys.
I, HENRY FRANCIS TAYLOR of Tynant Neath in the County of Glamorgan 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:—
These improvements refer to the cradle and nipping apparatus for taking down the
plate to be coated which plate is then canted, and for raising it into the nip of the
rolls on the exit side of the pot such improvements being specially applicable for self
acting gear that is to say for being worked by machinery so that the attendant has
only to put the uncoated plate into the apparatus the plate being received in a coated
or finished condition from the exit rolls.
To open and close the nipper hook I employ suitable stops or tappets which during
the working come in contact with the hook and to retain the hook in the required
open or closed position I employ a bar with spring or weight acting against notches
or faces in the hook. Or instead of acting on the hook directly the aforesaid parts
may act on a part connected with the book.
As an illustration I will describe my invention as applied to self acting gear such as
described in Taylor and Struve's Patent Specification No. 4350 of 1888. Figure 1 of
the accompanying drawings is a vertical cross section through a tinning pot with the
self acting gear constructed according to my present invention and adapted to the
gear described in the aforesaid Specification. What was called the cradle rod H in
that Specification is here the rod H which in my present invention receives up and
down movement by being connected to the lever B (or any equivalent part in self
acting apparatus of other constructions). The point of connection B³ to the lever B'
may be adjusted according to the depth of the plate to be coated, and the rod H for
that purpose be provided with holes at different points.
In connection with the rod H and lever B' I provide a tappet rod or bar T shown
more clearly in the detail view Figure 14 of the nipper hook and parts connected
therewith and in the detail views Figures 24, 34, 44, and 6 shewing the parts in
different positions. The upper end of the tappet bar T can be fixed to the top of
the pot P for instance as here shown by a bent over part T¹, but it may also if desired
be made adjustable according to the depth of the plate to be coated for instance by
continuing the upper end of said bar and providing holes for pins therein.
The
bar T has an upper tappet M and a lower tappet N. These tappets or stops act upon
two faces set at an angle on the nipper hook D (or on a tumbler or short lever which
is in one with the nipper hook or fixed to the pivot of the nipper hook). The plate is
nipped between the book D and the cradle rod H. Sometimes I provide a third or
intermediate tappet for partially closing the hook D in rising. To retain the nipper
hook in the open or closed position a rod O is provided the upper end of which is
held in a yielding manner (say with a helical spring O¹ adjustable by a screw nut O³)
in a projection or eye from the cradle rod H. This rod O is formed like a pawl
tooth or pointer at its lower end and the hook or tumbler D is recessed or notched.
at D¹ for the bottom end of the rod O to act against and hold it in the open or
closed position on one side or other of its pivot centre.
When the cradle rod H is nearly in its uppermost position and whilst still rising
see Figure 1 and detail view Figure 14 the upper face D' of tumbler having recess D
comes against the upper tappet M, the latter thus depressing that end of the hook D.
and raising the opposite or nipping part so as to nip the inserted plate Pl ready
subsequently to take it down as required into the coating material. Figures 2
and 2 shew this position of the nipper hook and other parts.
The cradle is then lowered. When the cradle with the plate is nearly in its lowest
position the nipper hook D or tumbler comes with its face D' against the lowest
tappet N, see Figures 3 and 3* and the nippers are opened again so that the plate is

page_text: released as shewn in Figures 4 and 4ª and can be canted and in the rising stroke be
entered into the nip of the rolls on the exit side of the pot. In Figure 3 the
plate Pl is shewn in the position of being canted which is effected in a similar manner
as shewn in Specification 435088 viz. by a rack and pinion or as therein described and
here shown by a sliding bar E and tappet A' which latter is adjustably fixed in a
slot in the disc or wheel A*, the sliding bar E having a lug E* which comes in contact
with the said tappet A. The weight F' serves to bring the sliding bar E back.
Figure 5 shows the plate Pl entering into the nip of the rolls in the finishing grease
pot on the exit side.
In another form shown in Figures 1B, 2B, 3B, and 4B, which indicate positions of
parts corresponding to those shown in Figures 14, 24, 34 and 44, I provide the nipper
hook D or tumbler with 2 upper faces Dx and D₁, the latter in a recess, and pro-
vide a rod O with a yielding action as in the previous example to act against one
face or the other the tappets M and N acting against other faces D and D'
respectively.
Or I joint the said rod O in the two previous examples to the nipper D in such a
position that the spring O' or a weight will cause the rod to act on one side or the
other of the nipper hook pivot centre.
Or the rod Oinstead of acting in pushing against the nipper hook may be so jointed
to it or act on the underside of the pivot centre as to pull the hook over to one side
or the other and thus open and close as required.
Figure 6 illustrates another form of nipper hook D and rod O for accomplishing
the same purpose. The rod O is in this case guided through an eye or staple H*
fixed to the rod H. The nipper hook is formed with faces D*, D', D³ and D³ for the
rod end and for the tappets M and N to act upon.
Instead of using only one nipper hook I may use two, thus rendering the apparatus
more suitable for wide plates and pots.
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 :-
First. In apparatus for coating plates with tin, lead or other metals or alloys a
plate nipping hook D provided with faces which is carried up and down by machinery
or by hand said faces being adapted to come against tappets for the purpose of
opening and closing the book which is retained in the closed or open position by a
yielding part in connection with a spring or weight above the coating metal substan-
tially as set forth.
Second. The application of a rod which is operated by a spring or weight above the
coating metal and which serves to hold the nipper hook in the required closed or open
position substantially as set forth.
Third. The nipper hook D which is carried up and down by rod H from a reciprocating
lever B2 and has faces which are adapted to come against the stationary tappets M
and N said hook being retained in the required closed or open position by the
elastically mounted rod O substantially as described with reference to the accompanying
drawings.
Dated this Seventeeth day of January 1890.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.