Improvements in Machinery or Apparatus for Coating Metal Plates or Sheets with Tin, Lead, or other Metals or Alloys.
Year: 1898

page_text: Date of Application, 31st May, 1898-Accepted, 1st Oct., 1898
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Coating Metal Plates
or Sheets with Tin, Lead, or other Metals or Alloys.
We, PHILIP ROGERS, of 1, Uplands Crescent, Swansea, in the County of Glamorgan,
Machinery Agent, and JOHN PLAYER, of Clydach, near Swansea, aforesaid, Tin-
plate Manufacturer, 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 has reference to improvements in machinery or apparatus of the
kind described in the Specifications of Letters Patent previously granted to us and
numbered respectively 15,040 of 1886, 11,606 of 1890, and 21,060 of 1894, for
machinery or apparatus for coating metal plates or sheets with tin, lead, or other
metals or metallic alloys; and it has for object further to improve the construction
of such machinery or apparatus and particularly to increase its output and economy
when treating narrow plates or sheets.
Figs. 1 and 2 of the accompanying drawings are elevations taken at right angles
to each other and both partly in vertical section, and Fig. 3 is a plan, of a plate or
sheet coating machine according to this invention, parts of the driving gear being
omitted in Fig. 3, which shows the pick-up apparatus, and both the driving gear
and the pick-up apparatus being omitted from Figs. 1 and 2, for the sake of
clearness; Figs. 4 and 5 are respectively a front and an end elevation of a feed-bar
and its appurtenances, and Figs. 6 and 7 cross sections thereof; Figs. 8, 9, and 10
are respectively a rear elevation, a plan, and an end elevation of a lifting-bar and
its appurtenances and Figs. 11 and 12 cross sections thereof; Fig. 13 is a partial
elevation, drawn to a larger scale, illustrating an improvement in the pick-up
apparatus.
The machine shown comprises a pot A for the molten coating metal or alloy; a
grease-pot B containing two complete sets of finishing rolls G, G1, G2, G3, each roll
working in a roll-feeding trough K; two flux-boxes C; two cradles H; two feed-
bars 1; two lifting-bars 2; two pick-up apparatus D, each fitted with a device
(shown in Fig. 13) for turning the plates or sheets; and mechanism for operating
the several parts mentioned.
Each cradle H comprises a number of parallel bars 3 secured at their lower ends
to a cross-bar 4 whose ends engage in grooves 5 formed in the end walls, and
portions projecting from the bottom, of the pot A, the upper ends of the bars 3
being bent backwards and secured to a cross-bar 6. At each side of the cradle
there is arranged a couple of guide bars c, which consist of a longer rear bar and
a shorter front bar secured together and to the back of the cross bar 4, with
a distance-piece 7 (Fig. 2) between them, at their lower ends, the longer bar being
secured to the cross bar 6, the upper end of the shorter bar being riveted to the
onger bar near the top of the pot A, and the longer bar being continued up and
bent so as to rest against the face of grease-pot B, against which it is normally
kept by a weighted bell-crank lever 3. The bars 3 of the cradle H are so bent
hat when the guide-bars are in their normal position, as shown, there is a little space
between the cradle-bars and the bottom edge of the V-shaped guide f¹ (which is
rranged as and for the purpose specified in the Specification of our said Letters
Patent numbered 11,606 of 1890) so that the plates or sheets to be coated can slip
asily between them. If a thicker plate than usual be passed into the pot A the
[Drin Q27

page_text: When a plate or sheet is passed into a flux-box C it slides over the feed-bar hooks 9,
the guides 10, and the bars 3 of the cradle H until it rests on the curved arms 13
of the lifting-bar; when the arms 6¹ start on their down-stroke the attendant just
follows the plate or sheet with a light rod to start it, and during the first couple of
inches of travel of the feed-bar the hooks 9 are caused by the shape of the guide-
bars c to move forwards and engage with the top edge of the plate or sheet and
depress it into the tin-pot A until it has passed the guide f¹, whereupon it occupies
a vertical position between the bars 3 of the cradle H and the guide-ribs M and
rests on the curved arms 13 and 14 of the lifting-bar 2; during the upstroke the
plate or sheet is raised by the lifting-bar 2 past the front face of the guide f¹ (the
hooks 9 meanwhile moving backwards through slots 22 formed in the latter) until
its top edge enters between the rolls G; and when free from the top pair of
rolls G³ the plate or sheet is caught by the pick-up apparatus and placed in
the rack R (or upon a carrier), being turned through 90° meanwhile by the turn-
ing device. It will be seen that a hooked feed-bar arranged and operating as des-
cribed render unnecessary the use of hand-tongs for feeding, which have heretofore
been found indispensable and have always, unless very carefully used, resulted in
slightly buckling the plates or sheets.
When working short plates, we prefer to use four curved arms 13, in which
case four slots like 22, must be provided in the guide f¹ into which the curved arms
can enter at the top of the stroke.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a machine or apparatus for coating metal plates or sheets with tin, lead, or
other metal or alloy, a combined cradle H and guide-bars c pivoted at its lower end
in a tin-pot A and acted upon by weighted levers 8 substantially as and for the
purpose specified.
2. In a machine or apparatus for coating metal plates or sheets with tin, lead, or
other metal or alloy, a feed-bar 1 with hooks 9 and guides 10, arranged and operat-
ing substantially as hereinbefore described.
3. In a machine or apparatus for coating metal plates or sheets with tin, lead, or
other metal or alloy, a lifting-bar 2 with curved supporting arms 13, or
13 and 14, arranged and operating substantially as hereinbefore described.
4. In a pick-up apparatus of machinery or apparatus for coating metal plates or
sheets with tin, lead, or other metal or alloy, means for turning the plates or sheets
constructed, arranged, and operating substantially as herein before described with
reference to and shown in Fig. 13 of the accompanying drawings.
5. Machinery or apparatus for coating metal plates or sheets with tin, lead, or other
metal or alloy constructed, arranged, and operating subtantially as herein before
described with reference to and shown in the accompanying drawings, whether or
not the pick-up apparatus be provided with means for turning the plates or sheets
substantially as described.
6. In a machine or apparatus for coating metal plates or sheets with tin, lead, or
other metal or alloy, a combined cradle H and guide-bars c pivoted at its lower end
in a tin pot A and acted upon by weighted levers 8, a feed-bar 1 with sheet or plate
engaging devices, and a lifting-bar 2 with supporting means, all arranged and
operating substantially as hereinbefore described.
Wated this 31st day of Mov 1208
Uated this 31st day of May 1908.
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Felds, London, W.C., Chartered Patent Agent.