Year: 1895

page_text: Date of Application, 9th Jan., 1895
Complete Specification Left, 6th Sept., 1895-Accepted, 19th Oct., 1895
I, WILLIAM FIRMIN of 13 Hague Street, Bethnal Green Road in the County
of London, Brass Founder, do hereby declare the nature of this invention to be as
follows:-
In the Specification of my Patent No. 5535 of 1886 I described a syphon whose
short leg was for a great part of its length of considerably larger diameter than the
long leg and had placed over its lower end a pail or vessel having an upwardly
opening valve the said pail or vessel being provided with means for lifting it. In
order to start the syphon (when it was fitted to a tank, cistern or other reservoir)
it was only necessary to lift the pail; in this lifting movement the valve closed
and prevented the water passing out of the pail; the level of the water in the short
branch of the syphon was thereby raised up to and beyond the syphon bend and
the syphon was therefore started.
It was found in practice that owing to the large amount of water contained in
the wide portion of the short leg and in the pail it was difficult to lift this water
high enough to ensure its passing beyond the bend and thereby starting the syphon
unless the water level was unnecessarily high.
Now the chief object of my present invention is to overcome this difficulty and
for this purpose I make the wide portion of the short leg comparatively short and
I form the wide portion with a cylindrical upward extension concentric with the
narrow part of the leg so as to constitute a sufficient guide for the pail in its
vertical movement. The pail bas an internal flange or rim at its upper edge to
take against the exterior of the cylinder, and as in the syphon described in my
said former Specification, the flange does not fit closely as space is allowed between
it and the cylinder for the water to enter the syphon leg from the cistern. The
pail is provided as before with an upwardly opening ball, clack, spindle or other
valve at bottom. The cylinder has a stop to limit the upward movement of the
pail.
With the construction above described the amount of water to be lifted is
considerably reduced and the difficulty previously experienced in forcing the water
over the syphon bend is overcome.
In carrying out the invention it is preferred to cast the wide portion of the
short leg and the cylindrical upward extension in one piece with a tube which fits
upon the lower end of the narrow part of the leg.
For lifting the pail I prefer to connect it by vertical side links to the inner end
of a lever the outer end of which is connected with a pull cord or chain, the lever
having its fulcrum on an axle which has pivot joints of triangular form rocking in
recesses in the top of the cistern sides. A parallel lift of the pail with little
friction and noise is thus obtained.
Doted this 9th day of January 1805
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Patent Agents.

page_text: I, WILLIAM FIRMIN of 13 Hague Street, Bethnal Green Road in the County
of London, 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 :-
In the Specification of my Patent No. 5535 of 1886 I described a syphon whose
short leg was for a great part of its length of considerably larger diameter than
the long leg, and had placed over its lower end a pail or vessel having an upwardly
opening valve, the said pail or vessel being provided with means for lifting it. In
order to start the syphon (when it was fitted to a tank cistern or other reservoir)
it was only necessary to lift the pail; in this lifting movement the valve closed and
prevented the water passing out of the pail; the level of the water in the short
branch of the syphon was thereby raised up to and beyond the syphon bend, and
the syphon was therefore started.
It was found in practice that owing to the large amount of water contained in
the wide portion of the short leg, and in the pail it was difficult to lift this water
high enough to ensure its passing beyond the bend and thereby starting the syphon
unless the water level was unnecessarily high.
Now the chief object of my present invention is to overcome this difficulty, and
for this purpose I make the wide portion of the short leg comparatively short and
I form the wide portion with a cylindrical upward extension concentric with the
narrow part of the leg so as to constitute a sufficient guide for the pail in its
vertical movement. The pail has an internal flange or rim at its upper edge to
take against the exterior of the cylinder, and as in the syphon described in my
said former Specification, the flange does not fit very closely. The pail is provided
as before with an upwardly opening ball, clack, spindle or other valve at bottom.
The cylinder has a stop to limit the upward movement of the pail.
With the construction above described the amount of water to be lifted is
considerably reduced and the difficulty previously experienced in forcing the water
over the syphon bend is overcome.
The accompanying drawings will serve to illustrate my invention; they show it
applied to a syphon in connection with a small supply cistern. a is the cistern
and the ordinary ball valve through which it receives its water from the usual
source of supply. cd is the syphon the short leg of which is made considerably
wider at its lower part c', but this wide portion is short as compared with the
corresponding part of the syphon described in my said former Specification. The
wide portion el has a cylindrical upward extension e concentric with the narrow part
of the leg and this extension constitutes a sufficient guide for the pail in its vertical
movement and prevents the water flowing out. fis the pail; it has an internal
flange or rim g at its upper edge to take against the exterior of the cylinder e; the
flange g does not fit the cylinder e closely, so as to allow the pail to be easily
moved up and down. h is an upwardly opening valve at the bottom of the pail.
i is a stop on the cylinder e to limit the upward movement of the pail.
The action is as follows:-The pail being in its normal position as seen in
Figure 1, that is to say resting on the bottom of the well of the cistern the cistern
fills with water through the valve b up to the level allowed by this valve under the
action of its float, and the leg c of the syphon fills up to the same level, the water
entering it chiefly through the valve and partially through the small annular
space between the flange g of the pail and the cylinder e. Then when the pail is
liited the valve 7 closes, and as the water therefore cannot escape from the pail, the
water level in the leg c becomes raised up to and beyond the bend of the syphon.
The syphon is thus started.

page_text: In carrying out the invention it is preferred to cast the wide portion c¹ of the
short leg and the cylinder e in one piece with a tube c² as shown in Figure 3, this
tube fitting upon the lower end of the narrow part c of the leg as seen in Figure 1.
For lifting the pail I prefer to connect it by vertical side links jj to the inner
end of a forked lever k, the outer end of which is connected with a pull cord or
chain; this lever has its fulcrum on an axle which has pivot joints m of triangular
form rocking in recesses in the top of the cistern sides as shown. By this improved
arrangement a parallel lift of the pail is obtained, with little friction and noise.
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 with respect to syphons is :-
1. In a syphon of the character of that described in my former Specification
No. 5535 of 1886 the combination with a pail such as f of a cylindrical guide e and
a comparatively short widened portion e' of the short leg of the syphon, substantially
as and for the purpose hereinbefore described, and shown in the accompanying
drawings.
2. The combination with a syphon of the character herein referred to of a pail
lifting arrangement in which the lifting lever turns on pivot joints of triangular
form rocking in recesses in the top of the cistern sides, substantially as and for the
purpose hereinbefore described and shown in the accompanying drawings.
3. The improved syphon shown in the accompanying drawings and hereinbefore
described.
Dated the ca 1.
bou 100%
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.