Improvements in and relating to Injectors.
Year: 1894

page_text: Date of Application, 3rd Oct., 1894-Accepted, 16th Feb., 1895
Improvements in and relating to Injectors.
I WILLIAM BRIERLEY of The Borough Brass Works Rochdale in the County
of Lancaster Brass Founder 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 :-
My improvements relate to steam worked injectors for lifting and forcing water
and used in connection with steam boilers
The part or portion of the injector being more particularly the subject of my
vention is in connection with the part or valve intercepting the lifting and
delivery cones respectively and the outlet orifice or overflow, which parts are well
known.
The object and purpose of my present improvements o invention is to provide
m conjunction with an injector as herein referred to, an arrangement or means
whereby the water when the injector is started may be allowed to pass from the
lifting cone to the overflow, through an arrangement of clack valves which valves
are not actuated vertically or lifted, or do not depend for their action upon
vertical or lilting movements, neither do they work against o impinge on
the face of the lifting cone as is now the case, by reason of which conditious or
circumstances it is found in practice that the injector is rendered more or less
non-effective or less efhcient in the performance of its proper functions due to the
fact of a diminution or variation of the area of the orifice or lifting capacity, agam
valves so arranged-that is, actuated vertically or lifted-ate liable to stick or
become inoperative, the Intter occurience resulting in an escape of water at the
overflow at improper periods and the former-that is, the diminution of the area of
the orifice or variation of the lifting capacity-necessitates constant renewals of
the coues.
therefore claim for my improvements the subject of this iny invention to
remedy these defects, and I desire to point out that such an arrangement as above
indicated and illustrated in the drawings hereunto differentiates my invention
o improved injector from injectors now in use, that is, the inode of operation and
arrangement of relief valve.
In order that a clear comprehension of this my invention may be had I have
hereunto annexed a sheet of drawings illustrating an injector with my improve-
ments thereto attached.
Figure 1. is a sectional elevation of an mjector shewing my invention applied
thereto.
Figure 2. is a sectional elevation of my invention shewing the same detached
from the injector
Figure 3. is an elevation of the part shewn in Fig. 2. but not in section.
According to my construction I interpose between the lifting cone a. and the
delivery cone b. a piece c. or ordinary combining cone d. upon which piece c. I mount
Concentrically a barrel or sleeve c', which barrel or sleeve I provide with clacks or
Haps e. el mounted on studs f. f the said flaps are so arranged as to bear against
or impinge on prepared or ground faces or seats at 9 g thus forming clack or flap
valves, and by means of suitable spring pieces 1. attached to the body of the piece c¹
at the said flaps or covers are caused to press against the seats, and thus aid in
effectually closing or covering the valve openings . and consequently to
intercept the communication between the cones and the over How n.

page_text: The operation of my invention is as follows.
When starting the injector a vacuum being created in the chamber by the
passage of steam tho' the steam cone k; water is raised or lifted from the source
of supply such passing through the inlet orifice l' then thro' the annular space m.
into the lifting cone . So fat as have now explained this is the action and
operation of an ordinary injector and well understood Steam and water issning
from a. is then allowed to pass to the overflow, or relief is afforded through and by
means of the valves, this occurring and continuing so long as and until a sufficient
or adequate volume of water suitable to the capacity of the injector is lifted or
transmitted through the injector. When the pressure or force of discharge thro'
the combining and delivery cones exceeds the force or pressure thro' the space ».
intercepting the lifting and combining cones then the greater force thro' the cones
actuates or closes the valves accomplishing an effectual sealing thereof consequently
obviating any escape at the overflow.
The position or aangement of clack or flap valves as herem ai ranged ensules
certainty of action obviating liability to stick or wedge or become moperative.
The Haps having prepared faces beaung against corresponding prepared of
ground faces or seatings which are independent of the cones, any variation or
modification of the area of the oufice of interference with the efficiency of the
injector is obviated.
Having now particularly described and ascertamed the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.
1. In a forcing and lifting injector in combination the relief valves with the
combining and Lifting cones a and d. whereby the spring actuated flat valve covers
are adapted to move about fixed points or studs and to operate or close
against faces independent of or other than the face of the lifting cone as and for
the pun poses here fully set forth.
2. In combination the combining piece c. and the piece or sleeve el having
oufices or openings, with the sping actuated covers e e' as aud for the
purposes her ein fully set forth and illustrated in the drawings hereunto.
3. The sleeve or piece e' having valve ofices and faces and mounted thereon
valve covers e, e', maintained in position by means of spring pieces 1. ns and for
the purposes herein fully set forth and illustrated in the diawings hereunto.
Dated this 1st day of October 1894.
WILLIAM BRIERLEY.
JII. Butterworth, Rochdale,
For the Applicant.