IMPROVEMENTS IN SEWER OR DRAIN TRAPS
Year: 1885

page_text: I FREDERICK ILES of 35 Cornford Grove Bedford Hill, Balham in the County'
of Surrey, Surveyor do hereby declare the nature of the said invention for
IMPROVEMENTS IN SEWER OR DRAIN TRAPS to be as follows:--
The invention bas for its object improvements in outside sewer or drain traps
and relates to means for enabling access readily to be had thereto, for cleansing and
other purposes; and also for preventing any but authorized persons opening the
same.
For this purpose I construct the body of the trap of earthenware and I form it
at its upper part with a thickened rim and an internal shoulder or flange and
I secure thereto around the inside thereof and resting upon such shoulder or flange
a frame of iron.
Within this iron frame I place an iron grating which is provided with a hinge
or hinges at one end and a lock at the other and I form the frame with a recess or
projection into or under which the bolt of the lock may be shot by the aid of a
suitable key.
Or in some cases I may dispense with the hinges and employ a catch or a second
lock in lien thereof.
By these means I am enabled to dispense with the costly stone seating ordinarily
employed for the grating and I at the same time obtain a lock-up grating which
can only be opened by a person provided with the proper key.
.
:
1005

page_text: I construct the body a of the trap of earthenware and I form it at its upper part
with a thickened rim a¹ and an internal shoulder or flange a³.
Around the inside of the thickened rim a¹ and resting upon the shoulder or
flange a I place a frame b¹ of iron and I secure this frame b¹ in position by means
of screwed bolts or pins 6 seated in holes formed through the rim a¹³.
Within the iron frame b¹ I place the iron grating 6 and I hinge one end thereof
to the iron frame b¹ by means of studs or pins b³ passing through the iron frame b¹
and screwing into holes formed in the grating b or the grating 6 might be otherwise
hinged to the frame b¹.
The opposite end of the grating 6 I furnish with a lock b and I form the
frame with a recess b' to receive the bolt be of the lock 6. The bolt of the lock
may be shot by the aid of a key (not shown) fitting upon the square 6º of the
lock spindle.
Or I may employ any other form of lock and parts acting in conjunction
therewith suitable for the purpose and I may if desired arrange the lock within or
upon the frame b¹ and the recess b' or catches upon or within the grating b and in
some cases I may dispense with the hinges b³, and employ a catch or a second lock
in lieu thereof.
bs are stops carried by the frame b¹ upon which the grating b rests when in its
closed position.
By these means I am enabled to dispense with the costly stone seating ordinarily
employed for the grating and I at the same time obtain a lock up grating which
can only be opened by a person provided with the proper key.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A sewer or drain trap furnished with a grating capable of being locked in
position or unlocked by the aid of one or more locks and keys substantially as
herein shown and described and for the purpose stated.
2. A sewer or drain trap formed at the upper part thereof with a thickened
rim a¹ and a shoulder or flange a³ and furnished with an iron frame b¹ and a
grating 6 capable of being locked in position or unlocked by the aid of one or more
locks and keys substantially as herein shown and described and for the purpose
stated.