f IMPROVEMENTS IN AND APPLICABLE TO CLAPPERS AND HAMMERS FOR BELLS
Year: 1879

page_text: LETTERS PATENT to Arthur Peniston Moore, Gervas Holmes, and Henry
Augustin Ornano Mackenzie, of Harleston, in the County of Norfolk, for the
Invention of "f
IMPROVEMENTS IN AND APPLICABLE TO CLAPPERS AND HAMMERS
FOR BELLS."
Sealed the 24th October 1879, and dated the 3rd May 1879.
PROVISIONAL SPECIFICATION left by the said Arthur Peniston Moore,
Gervas Holmes, and Henry Augustin Ornano Mackenzie at the Office of the
Commissioners of Patents on the 3rd May 1879.
ARTHUR PENISTON MOORE, GERVAS HOLMES, and HENRY AUGUSTIN ORNANO
MACKENZIE, of Harleston, in the County of Norfolk. "IMPROVEMENTS IN AND
APPLICABLE TO CLAPPERS AND HAMMERS FOR BELLS."
Our Invention has for its object the withdrawal of the clapper or hammer out of
contact with the bell immediately after striking by means of apparatus combined
and arranged so as to act, in the manner hereinafter stated, in substitution for
springs or other means heretofore employed for the purpose.
And our Invention consists in the combination with the striking head of the
clapper or hammer of a shank which is capable of sliding a short distance on an arm
jointed so as to vibrate as required on the staple or fork fixed to the crown of the
bell. At the end of the shank opposite to that to which the striking head is connected
there is fitted a cross piece fitted on either side of the shank in the direction in
which the clapper or hammer swings.
By this arrangement of the parts the centrifugal force imparted to the striking
head with its shank when the bell is rung will cause it to maintain a position on the
arm as far from the jointed end thereof as a stop on the outer end of the arm will
permit until it strikes the upturned bell.
When on the contact of the striking head with the bell the said centrifugal force
ceases to act the striking head with its shank and cross piece is free to slide down-
wards along the arm by the force of gravity, and the end of the cross piece on the
striking side being thereby caused to rest on the crown or other suitable part of the
bell it acts as a turning point or fulcrum and causes the striking head to be with-
drawn a short distance from the part of the bell which it has just struck, further
movement than is required being checked by a stop on the lower or inner end of
the arm.

page_text: If the bell is stationary or fixed and sounded externally or internally by a hammer
moved by any force independent of the bell itself, such as a clock, carillon machine,
or player, we prefer to use only one half of the cross piece, viz., that on the striking
side, and mount the hammer on the frame work in such a position with the arm
joint below that the end of the half cross piece is nearly under the intended point
of contact of the striking head and bell. When the hammer is projected against or
allowed to fall towards the bell the striking head shank is as far towards the joint
end of the arm as the stop thereon will allow, but before the striking head comes in
contact with the bell the end of the half cross piece touches a part of the frame
work fixed to receive it, and becomes a turning point or fulcrum. The momentum
of the striking head and its shank causes the same to slide upwards on the arm
until the head strikes the bell; the momentum then ceasing, the striking head and
shank slide down the arm by force of gravity, and turning on the end of the half
cross piece the striking head assumes and remains in the required position out of
contact with the bell.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Arthur Peniston Moore, Gervas Holmes, and Henry Augustin Ornano
Mackenzie in the Great Seal Patent Office on the 3rd November 1879.
ARTHUR PENISTON MOORE, GERVAS HOLMES, and HENRY AUGUSTIN ORNANO
"IMPROVEMENTS IN AND
MACKENZIE, of Harleston, in the County of Norfolk.
APPLICABLE TO CLAPPERS AND HAMMERS FOR BELLS."
Our Invention of "Improvements in and Applicable to Clappers and Hammers
for Bells," has for its object the withdrawal of the clapper or hammer out of contact
with the bell immediately after striking by means of apparatus combined and
arranged so as to act in the manner hereinafter described, in substitution for springs
or other means heretofore employed for the purpose.
And our Invention consists in the combination with the striking head of the
clapper or hammer of a shank which is capable of sliding a short distance on an
arm jointed so as to vibrate as required on the staple or fork fixed to the crown of
the bell. At the end of the shank opposite to that to which the striking head is
connected there is fitted a cross piece projecting on either side of the shank in the
direction in which the clapper or hammer swings.
By this arrangement of the parts the centrifugal force imparted to the striking
head with its shank when the bell is rung will cause it to maintain a position on
the arm as far from the jointed end thereof as a stop on the outer end of the arm
will permit until it strikes the upturned bell.
When on the contact of the striking head with the bell the said centrifugal force
- ceases to act, the striking head with its shank and crosspiece is free to slide down-
wards along the arm by the force of gravity, and the end of the cross piece on the
striking side being thereby caused to rest on the crown of the bell (or other suitable
part fixed to receive it) it acts as a turning point or fulcrum and causes the striking

page_text: On Sheet I. Figures 1 to 4 represent the .application of our Invention to a bell
to be rung. Fig. 1 is a half elevation and half section of a clapper or hammer con-
structed according to our Invention, and shews the position thereof when at rest
after striking the bell; Fig. 2 represents the clapper or hammer as when striking
the bell; Fig. 3 shews the position of the shank at the jointed end of the arm when
striking; Fig. 4 is a cross section of the arm and shank.
On Sheet II. Figures 5 to 7 represent the application of our Invention to a bell
to be struck externally. Fig. 5 shews the position of the hammer (moved by any
force independent of the bell) when at rest after striking the bell; Fig. 6 represents
the hammer as when striking the bell; Fig. 7 shews the position of the shank at
the jointed end of the arm when striking. In these several Figures the same letters
of reference indicate corresponding parts.
A is the striking head of the clapper or hammer; B, the shank capable of sliding
a short distance represented by the space C on the arm D, as shewn in Figures 1
and 3; E is the pin of the vibrating joint at the staple or fork which is fixed at
the crown of the bell; F is the cross piece projecting on either side of the shank;
G is a guide fixed to the boss of the arm D, in the end of which the cross piece
can move vertically, but which prevents the cross piece, and with it the shank, from
turning round on the arm; H is a portion of the bell in section.
The action of the parts referred to is as follows:-When the bell is rung the
centrifugal force imparted to the striking head A with the shank B will cause it to
maintain a position on the arm D as far from the jointed end thereof J as the stop K
will permit until it strikes the upturned bell H. When on the contact of the
striking head A with the bell H the said centrifugal force ceases to act, the striking
head A with its shank B and cross piece F is free to slide downwards along the
arm D by the force of gravity, and the end of the cross piece on the striking side
being thereby caused to rest on the crown of the bell, as at L in Fig. 1, it acts as a
turning point or fulcrum and causes the striking head A to be withdrawn a short
distance, as at M, from that part of the bell which it has just struck, any further
movement than is required being checked by the stops N, O.
In the case of the bell represented in Fig. 5, the hammer is
venient force independent of the bell itself applied to the
moved by any con-
rope or wire P acting

page_text: through the lever Q upon the jointed end J of the arm. F is the half cross piece ;
R is the part of the frame-work upon which the hammer is mounted.
When the hammer is raised from the position shewn in Fig. 5 and allowed to
fall towards the bell the shank of the striking head is in the position shewn, leaving
the space C between the top of the head and the stop K, and as far towards the
jointed end of the arm as the stop N will allow; but before the striking head A
comes in contact with the bell the end of the half cross piece is caused to touch a
part S of the framework fixed to receive it, and becomes a turning point or fulcrum,
The momentum of the striking head A with its shank B causes the same to slide
upwards on the arm until the head A strikes the bell H, the momentum then ceasing,
the striking head and shank slide down the arm by the force of gravity, and turning
on the end of the half cross piece F cause the striking head A to assume the position
shewn in Fig. 5 out of contact with the bell.
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, we would remark that the forms and arrangements of the
parts above described may be varied without departing from the spirit or essential
feature of our Invention which is designed to enable the momentum and centrifugal
force of the clapper head in its vibratory motion to place it in striking position, and
also to enable the force of gravity to withdraw and maintain the clapper head out
of contact with the bell after striking.
But what we claim as of our Invention is,―
First. The combination of parts described with reference to Figures 1, 2, 3, and 4,
whereby the striking head of the clapper or hammer is placed in striking position
and withdrawn from and maintained out of contact with the upturned bell after
striking.
Secondly, The combination of parts described with reference to Figures 5, 6, and 7,
whereby the same effects are produced on a hammer which is caused to strike a bell
externally.
And, lastly. The combination of an additional fulcrum or turning point with the
joint or centre of motion on which the clapper or hammer swings.
In witness whereof, we, the said Arthur Peniston Moore, Gervas Holmes,
and Henry Augustin Ornano Mackenzie, have hereunto set our hands and
seals, the Twenty seventh day of October, in the year of our Lord One
thousand eight hundred and seventy nine.
A. P. MOORE.
GERVAS HOLMES.
(L.S.)
(L.S.)
Witness to all the signatures,
ROBERT KNIGHT,
Harleston,
Engineer.
H. A. O. MACKENZIE. (L.S.)