Year: 1886

page_text: I PERCIVAL EVERITT of 47 Cannon Street, in the city of London, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an apparatus which will indicate the force of a blow on a
coin or token of predetermined value being inserted in the apparatus.
.
For this purpose I take any suitable apparatus adapted to indicate the force of a
blow, but I so construct and arrange the indicating apparatus that it can only operate
on the insertion of the required coin or token.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: Improvements in or Applicable to Apparatus for Indicating the
Force of a Blow.
I, PEROIVAL EVERITT, of 47, Cannon Street, in the city of London, Engineer,
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 :-
This invention relates to an apparatus which will indicate the force of a blow on a
coin or token of predetermined value being inserted in the apparatus.
For this purpose I take any suitable apparatus adapted to indicate the force of a
blow, but I so construct and arrange the indicating apparatus that it can only operate
on the insertion of the required coin or token.
In order to enable my invention to be fully understood I will describe the mode
of carrying the same into effect which I find advantageous by reference to the
accompanying drawings in which figure 1 represents a front elevation of an apparatus
constructed and arranged so as to indicate the force of a blow on a coin or token
being inserted in the apparatus according to my invention; figure 2 represents part
of a similar view to figure 1, but shewing a portion of the front of the casing removed
and part of the apparatus in section; figure 3 represents a side elevation, partly in
section of the apparatus, and figure 4 a horizontal section on the line A B of figure 1 ;
figure 5 is a diagrammatic view illustrating a slightly modified form of the apparatus.
Similar letters in all the figures represent similar parts.
A represents the stand and D the casing of an apparatus adapted to indicate the
force of a blow; C, is the striking pad or cushion on one end of a tube D sliding in
a fixed tube or guide E, and containing the spring F for measuring the force of the
blow, the said parts being of usual construction.
a, represents the index or pointer of the apparatus which is arranged to move over
a graduated scale; b, c, is a loose marking hand or pointer which, by the index a,
bearing against a pin a', thereon, is carried along and serves to mark or indicate the
force of the blow after the index a, has returned to zero, which it does immediately
the blow has been struck; the index a, and loose marking hand c, are respectively
attached to rings d, and e, adapted to rotate upon a boss or short tube f, forming a
guide for the front end of the sliding tube D; to the index a, I joint a link }; which
is attached at its other end to one arm h, of a two-armed lever h, h, the fulcrum of
which is shewn at ; the free end of the arm h¹, is bifurcated, as shewn in figure 2, so
that a pin or stud j, on the end of an arm k, fixed at 1, to the sliding tube D, can pass

page_text: through it when not prevented by a coin inserted in the apparatus as and for the
purpose hereinafter described; m, is a slit through which the coins for successfully
operating the apparatus must be passed, which slit is situated immediately above the
space which normally exists between the bifurcated end of the lever arm h', and
the pin or stud j, so that the coin will fall into the said space; n, n, are pins fixed in the
casing B, just below the end of the arm h, and on which the coin then rests; o, is a
weighted cord or the like attached to the lever arm h, and working over a pulley P,
for the purpose of bringing back the link g, lever h, h, and index a, to their normal
position; 7, is a stop for holding the lever h, ', in proper position to be operated by
means of the coin.
and
By this construction of apparatus if a person desire to ascertain the force of a blow,
a coin or token must be first passed through the slit m, when it will fall between the
bifurcated end of the lever arm h', and the pin or stud j; the blow must then be
struck upon the pad or cushion C, in the manner usual when using an ordinary
machine for this purpose, and the pad C, and the sliding tube D, will thereby be forced
inwards to a certain extent according to the force of the blow; this extent of
movement will, by means of the fixed arm k, in conjunction with the coin 1, be
communicated to the lever h, h, (which will be moved towards or into the position
shewn in dotted lines in figure 4) and to the link g, and thereby to the index
loose marking hand e; in thus moving, the lever arm h', will describe an are of a
circle and will therefore slide or carry the coin 1 away from the pin or stud j, and the
coin being then deprived of support will drop within the casing, the pin or stud j,
then riding over the curved part or heel of the lever arm h¹, as illustrated by the
dotted lines in figure 4; the pad C, tube D, and arm k, will move back to their
normal position immediately after the blow has been struck and the lever 1, ¹, link
and index a, will be drawn back to their original position (shown by the full lines in
figure 4) by the weighted cord o, the loose marking hand c, however will remain
in the position into which it has been moved, and will thus serve to indicate the force
of the blow which has been struck. It will be understood that the loose marking
hand c, must be moved back to zero by hand each time the apparatus is operated, it
being provided with a knob r, outside the front of the casing B to allow this to be
done.
Should a blow be struck upon the pad or cushion C, of the apparatus without a coin
or token having been previously inserted in the apparatus, the pin or stud j, as the
fixed arm k, moves inwards, would pass between the bifurcation on the end of the
lever arm, and would therefore not operate the indicating mechanism.
Instead of the arm k, being fixed to the sliding tube D as hereinbefore described
and illustrated in the drawings I sometimes attach it to a pivotted vertical lever or
bar e, arranged to be operated by the said sliding or moveable tube D.as shewn in the
diagrammatic view at figure 5, the spring F, being conveniently placed over a guide
rod the other parts of the mechanism would be the same as those hereinbefore
described.
Although I have described and illustrated my invention applied to an apparatus
adapted to indicate the force of a blow delivered by a person's hand, it will be obvious
that it is equally applicable to other forms of apparatus for indicating or disclosing
the force of a blow, such for example, to such as may be employed for indicating or
disclosing the force of a blow from a mallet or the like.
In some cases the cushion or pad that receives the blow may be locked by a suitable
retaining device which is released by a coin being placed in the apparatus but I find
that arrangement not so advantageous as that herein before described as it is liable to
injury or to cause injury to the striker when a blow is given while the apparatus is
locked.
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
The manufacture and use of the now kind of annaratus for indicating the force

page_text: of a blow, in which on a coin or the like being placed in the apparatus the force of
the blow will be indicated or disclosed and registered.
2. The conbination with or application to apparatus such as is herein described for
indicating the force of a blow, of an arrangement whereby a coin is caused to operate
an index or indicator as and for the purpose hereinbefore described and represented in
the accompanying drawings.
3. The improved apparatuses for indicating the force of a blow hereinbefore described
and represented respectively in figures 1 to 4 and in figure 5 of the accompanying
drawings.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.