IMPROVEMENTS IN CLACK AND BUCKET DOOR PIRCES FOR PUMPS
Year: 1867

page_text: LETTERS PATENT to William Payne, of Birmingham, in the County of
Warwick, Engine Fitter, for the Invention of "IMPROVEMENTS IN CLACK
AND BUCKET DOOR PIRCES FOR PUMPS."
Sealed the 8th May 1868, and dated the 11th November 1867.
PROVISIONAL SPECIFICATION left by the said William Payne at the
Office of the Commissioners of Patents, with his Petition, on the 11th
November 1867.
I, WILLIAM PAYNE, of Birmingham, in the County of Warwick, Engine
Fitter, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN CLACK AND BUCKET DOOR PIECES FOR PUMPS," to be as follows:-
According to the plan now usual of fastening or securing the doors of clack
and bucket door pieces by bolts or screw pins much time is necessarily taken
up whilst changing a clack or bucket in the unscrewing and screwing on the
several bolts by which the doors are held in their places. Now I propose to
remedy this evil by the means herein-after explained, and which are substan-
tially as follows:-Instead of securing the doors by the screw pins as aforesaid
I cast on or attach to each side of the opening of the clack or bucket door
piece grooves into which the door slides somewhat after the manner of a
sluice or floodgate, and I give such a slope or inclination to the inside face
of the groove and the outside of the door which fits against it as shall have
the effect when the door is let down of causing it to press against the face of
the clack or bucket door piece, so as to make a tight joint.

page_text: Or as a modification of my Invention I compel the door to apply itself to
the face of the piece by set screws passing through the outer lip of the
groove or slot, and which said set screws are caused to press against the outer
face of the door. When needful I provide a more perfect joint by making a
groove in the inner face of the door, and inserting therein cork, india-rubber,
wood, or some more elastic substance than iron, but this being a well-known
means of making a perfect joint I do not propose to make any claim in
respect of it, except so far as relates to its application to clack or bucket door
pieces for pumps in the manner herein-before described. The clack or
bucket door piece, herein-before described may be raised or lowered by a
rack and pinion, or by any other suitable and well-known mechanical
means.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Payne in the Great Seal Patent Office on the
8th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
PAYNE, of Birmingham, in the County of Warwick, Engine Fitter, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of November, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Payne, Her special licence that 1, the said William Payne,
my executors, administrators, and; assigns, or such others as I, the said
William Payne, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during, the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the. United Kingdom of Great Britain and Ireland,
the Channel Islands, and, Isle of Man, an Invention for "IMPROVEMENTS IN
CLACK AND BUCKET DOOR PIECES FOR PUMPS," upon the condition (amongst
others) that I, the said William Payne, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe, and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William Payne, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in. and by the following
statement (that is to say) 1
According to the plan now usual of fastening or securing the doors of clack
and bucket door pieces by bolts or screw pins much time is necessarily taken
up whilst changing a clack or bucket in the unscrewing and screwing on the
several bolts by which the doors are held in their places. Now I propose to
remedy this evil by the means herein-after explained, and which are substan-
tially as follows:-Instead of securing the doors by the screw pins as aforesaid
I cast on or attach to each side of the opening of the clack or bucket door
piece grooves into which the door slides somewhat after the manner of a sluice.
or floodgate, and I give such a slope or inclination to the inside face of the
groove and the outside of the door which fits against it as shall have the effect
when the door is let down of causing it to press against the face of the clack
or bucket door piece, so as to make a tight joint.
Or as a modification of my Invention I compel the door to apply itself to
the face of the piece by set screws passing through the outer lip of the groove
or slot, and which said set screws are caused to press against the outer face of
the door. When needful I provide a more perfect joint by making a groove
in the inner face of the door, and inserting therein cork, india-rubber, wood,
or some more elastic substance than iron, but this being a well-known means
of making a perfect joint I do not propose to make any claim in respect of
it, except so far as relates to its application to clack or bucket door pieces for
pumps in the manner herein-before described. The clack or bucket door piece
herein-before described may be raised or lowered by a rack and pinion, or by
any other suitable and well-known mechanical means.
That my Invention may be fully understood I have annexed Drawings
thereof, which I now proceed to describe.-
Fig. 1 is a vertical section, and Fig. 2 is a front elevation; Fig. 3 is a
horizontal section upon the line A, A.
a is the length of pipe containing the clack to which access is required;
6 is a raised face cast around the open front of the pipe, and planed to fit the
door d, which is also planed; e, e, are flanges also cast upon the pipe, and
forming with the face b grooves c, c, in which the side flanges of the door d
slide; r, r, are set screws for forcing the door d against the face b after it has
been lowered into the position shewn; but as before mentioned these set
screws r, r, do not necessarily form part of my Invention, and may if desired
be dispensed with altogether. f, f, are lugs cast upon the door, and between

page_text: them is jointed the rack 9, which has ratchet teeth h upon one side into which
the pall i engages, and ordinary.teeth k upon the other side, into which the
lifting pinion engages. The pinion is turned by means of a bar inserted into
holes in the boss m. n, n, are friction rollers to steady the rack; o, o, are
brackets carrying the pinion and pall; p is a weight to keep the pall in contact
with the rack.
Having now described the nature of my said Invention, and the manner in
which the same is or may be performed, I desire it to be understood that I
claim as the Invention to be protected by the herein-before in part recited
Letters Patent, the improvements in clack and bucket door pieces for pumps,
herein contained, and consisting substantially in casting on or attaching to
each side of the opening of the clack or bucket door piece grooves into which
the door may slide, giving such a slope or inclination to the inside face of the
groove and the outside of the door which fits against it as shall have the effect
when the door is let down of causing it to press against the face of the clack
or bucket door piece so as to make a tight joint; and I claim the manner.
of making a more perfect joint in case of need by using set screws in the
manner herein-before described, or by inserting in the groove in the inner face.
of the door cork, india-rubber, wood, or some more elastic substance than
iron, as herein-before explained.
In witness whereof, I, the said William Payne, have hereunto set my
hand and seal, this Seventh day of May, in the year of our Lord
1868.
Witness,
G. R. HOLLAND,
Patent Office,
Birmingham.
WILLIAM PAYNE. (L.S.)