Improvements in Liquid-strainers.
Year: 1894

page_text: Date of Application, 30th July, 1894-Accepted, 22nd Sept., 1394
Improvements in Liquid-strainers.
I, DARWIN BRYANT GOTHAM, of Number 27 Water Street, in the Village of
Brownville, County of Jefferson, and State of New York, United States of
America, 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 relates to improvements in liquid-strainers, and has for its object
the production of a simple and highly efficient device; and to this end it consists,
essentially, in a receiving vat provided with a screen plate, stationary suction
chambers beneath the screen plate, downwardly extending outlet passages opening
along continuous edges of two adjacent suction chambers, and an outlet chamber
arranged beneath and opening from the outlet passages.
The invention also consists in the detail construction and arrangement of the
parts, all as hereinafter more particularly described and pointed out in the
claims.
In describing this invention, reference is had to the accompanying drawing,
forming a part of this Specification, in which, like letters indicate corresponding
parts in all the views.
Figure is an isometric perspective of the improved strainer, illustrating th:
general construction and arrangement of its component parts.
Figure 2 is a longitudinal vertical sectional view, partly in elevation, of the
upper portion of the strainer as seen at Figure 1; and
Figure 3 is a transverse vertical sectional view, taken on line 3-3, Figure 2.
The frame A of this invention is provided at its opposite ends with standards B B
having their lower ends secured together by longitudinal tie bars C C connected
by cross bars c, and said frame A consists of upper and lower sections a a' secured
together at corresponding edges by hinges a³.
The upper section a of the frame A is formed with a normally stationary vat D
for receiving the unstrained material, and at the base of the vat D is a perforated
screen plate d secured to suitable supports as cross bars d¹ and shoulders d².
Beneath the screen d are a series of suction chambers E separated by partitions
consisting of packing strips e and cross bars d' directly above said strips, and at
the base of the suction chambers are diaphragms E' secured at their edges to the
lower walls of said chambers E.
The diaphragms E' are elevated by suitable plungers F, presently described, and
operate to produce a suction within the chambers E. Outlet passages e' e¹ extend
downwardly from the adjacent edges of each pair of the suction chambers for
receiving the strained material discharged therefrom. Beneath each pair of the
outlet passages is an outlet chamber G, which extends transversely across the
frame A, and is formed with a projecting end extending beyond the front wall of
the frame A and having an opening g in its upper portion.
Directly above the projecting ends of the outlet chambers G, and beneath the
suction chambers E is an upper outlet chamber G' having its opposite ends each
provided with an opening g' registering with the opening y in the corresponding
outlet chamber G and having its central portion formed with an outlet nipple G³,
whence the strained material is conducted by any suitable construction of pipe, not
necessary to herein illustrate or describe.
It will be particularly noted that the combined depth of each of the outlet
passages e and the outlet chamber G communicating therewith is considerably
greater than the depth of the suction chamber discharging thereinto. This is an
essential feature, as, if said parts are otherwise constructed, there is more or less

page_text: liability of air being blown through the outlet passage and chamber and effecting
agitation and displacement of the strained material and impairing the continuity of
it; flow. This result is positively prevented by the construction of the present
machine, and, in its proper operation, the strained material flows quietly and
continuously from the outlet chambers.
The plungers F, previously mentioned, are of any desired construction, and are
provided with a plunger rod f having its upper end guided through an upper bar f
and provided with an encircling coiled spring H having one end resting against the
bearing and its other end against a shoulder f2 adjustable lengthwise on the
upper end of the plunger rod f and adapted to be held in position by a check nut f³.
The lower end of each plunger rod is passed through and extends beneath a
bearing of a bracket I secured to one of the cross bars c between the longitudinal
tie bars C. The lower end of this bracket is provided with an oil chamber i¹ and
with a bearing arranged at an angle with the former bearing i.
A shaft is journaled in the bearing 2, and is provided with cams J movable in
the corresponding oil chambers . The lower end of each plunger rod fis provided
with a head having removable wearing pieces fe of copper or lignum-vitæ for
engaging the cams J. The cams J are arranged to operate successively, and are
each formed with an abrupt incline for forcing the plungers upwardly at a greater
speed than the same descend.
j
Owing to the separable connection of the plunger rods and the cams for operating
the same it is very rare indeed that a vacuum is produced within this improved
machine; but, should a vacuum be produced, the strained material within the
outlet passages e¹ and the outlet chambers G, will, by the weight of the material
within the upper outlet chamber G', flow into the suction chambers E and relieve the
vacuum. The disposition of the outlet chamber G beneath the suction chambers E
prevents the blowing of air from the suction chamber to the other, even when the
material flows, as described, from the chambers G G' to relieve the vacuum within
the suction chamber.
The operation of this invention will be readily understood upon reference to the
foregoing description and the accompanying drawings.
Having now particularly described and ascertained the nature of this said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
:-
1. A strainer comprising a receiving vat D provided with a screen plate d,
stationary suction chambers E beneath the screen plate d, downwardly extending
outlet passages el e¹ opening along continuous edges of two adjacent suction
chambers, and an outlet chamber G arranged beneath and opening from the outlet
passages, substantially as and for the purpose described.
2. A strainer comprising a receiving vat D provided with a screen plate d,
stationary suction chambers E beneath the screen plate d, downwardly extending
outlet passages e e' opening along continuous edges of two adjacent suction
chambers, an outlet chamber G arranged beneath and opening from the outlet
passages, and having one end extending beyond the corresponding wall of the
adjacent suction chambers, and an upper outlet chamber G₁ arranged above and
opening from said end of the former outlet chamber and arranged beneath the
suction chambers, substantially as and for the purpose specified.
3. The improved apparatus constructed substantially as described with reference
to the accompanying drawings and operating as and for the purpose above specified.
Dated this 12th day of May 1894.
DARWIN BRYANT GOTHAM.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.
DARWIN BRYANT GOTHAM.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.