Improvements in what are known as Automatic or Coin-freed Dynamometers.
Year: 1889

page_text: PROVISIONAL SPECIFICATION,
Improvements in what are known as Automatic or Coin-freed
Dynamometers.
1, 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 improvements in what are known as automatic or coin-
freed dynamometers of the kind first invented and patented by Robert William Page,
by Letters Patent No. 12576 dated 20th November 1885, the present improvements
having mainly for object to simplify the construction of such machines.
For the purpose of illustration I will describe my improvements as applied to an
apparatus for indicating the muscular power exerted by the grip of the hand or hands
of a person.
To a suitable base plate is attached a standard, which is advantageously made
hollow in order to receive or form a passage for the coins as hereinafter described.
To the said base plate or to the said standard is pivoted a grip-lever provided with
an ordinary dynamometer spring; the upper end of the grip-lever passes through a
slot in the bottom of a receptacle or case provided with a graduated dial and con-
taining a pointer or hand connected to the coin receptacle which slides under a coin
shoot. To the said upper end of the grip-lever is jointed a push piece or rod working
in a suitable guide. When no coin has been placed in the apparatus, the said push
piece, if the grip lever be operated, will pass through holes in the coin receptacle,
which is adapted to slide over the opening in the standard. To the coin receptacle is
pivoted the hand or pointer.
When the hand or pointer and the coin receptacle are in their normal positions,
the opening in the said coin receptacle is underneath the bottom of a shoot which
extends from the money slot in the top or other suitable part of the apparatus.
If a coin be inserted in the apparatus it will pass down the said shoot into the said
sliding coin receptacle. On the grip-lever being operated, the said push rod instead
of being free to pass through the openings in the coin receptacle will come against
the coin and will press forward the said coin receptacle, which in moving will carry
with it the indicator or pointer and thereby indicate on the dial the power exerted
As the said coin receptacle is moving forward it is brought over the opening in the
said standard and when the grip is released the coin will drop through the money
receptacle down the said opening into a locked bag or drawer provided to receive it.
The grip-lever being released returns under the action of the spring to its normal
position, but the apparatus cannot be again operated until the indicator or pointer
and the coin receptacle are brought back to their normal positions, which can be
effected by means of a suitable knob outside the apparatus."
The grip-lever may be provided with a cutter passing over a perforated plate, so
that as the said lever is moved it may be employed to cut the end of a cigar.
Dated the 22nd day of August 1889.

page_text: Improvements in what are known as Automatic or Coin-freed
Dynamometers.
I, PERCIVAL EVERITT, of 47, Cannon Street, in the City of London, Engineer, do
hereby declare the nature of this invention and in what mauner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
This invention relates to improvements in what are known as automatic or coin-
freed dynamometers of the kind first invented and patented by Robert William Page,
by letters Patent No. 12576 dated 20th November 1885, the present improvements
having mainly for object to simplify the construction of such machines.
For the purpose of illustration I will describe my improvements as applied to an
apparatus for indicating the muscular power exerted by the grip of the hand or hands
of a person.
To a suitable base-plate is attached a standard, which is advantageously made
hollow in order to receive or form a passage for the coins as hereinafter described.
To the said base-plate or to the said standard is pivoted a grip-lever provided with
an ordinary dynamometer spring; the upper end of the grip-lever passes through a
slot in the bottom of a receptacle or case provided with a graduated dial and con-
taining a pointer or hand jointed to the coin receptacle which slides under a coin
shoot. To the said upper end of the grip-lever is jointed a push-piece or rod working
in a suitable guide. When no coin has been placed in the apparatus, the said push-
piece, if the grip-lever be operated, will pass through holes in the coin receptacle,
which is adapted to slide over the opening in the standard. The hand or pointer is
also pivoted to the bottom of the dial-case.
When the hand or pointer and the coin receptacle are in their normal positions, the
opening in the said coin receptacle is underneath the bottom of the coin-shoot which
extends from the money slot in the top or other suitable part of the apparatus.
If a coin be inserted in the apparatus, it will pass down the said shoot into the said
sliding coin receptacle. On the grip-lever being operated, the said push-rod instead
of being free to pass through the openings in the coin-receptacle will come against
the coin and will press forward the said coin-receptacle which, in moving, will carry
with it the indicator or pointer and thereby indicate on the dial the power exerted.
As the said coin receptacle inoved forward it is brought over the opening in the
said standard and when the grip is released the coin will drop through the money
receptacle down the said opening into a locked bag, drawer or the like provided to
receive it. The grip-lever being released returns under the action of the spring to its
normal position, but the apparatus cannot be again operated until the indicator or
pointer and the coin-receptacle are brought back to their normal positions, which can
be effected by means of a suitable knob outside the apparatus.
The grip-lever may be provided with a cutter passing over a perforated plate, so
that as the said lever is moved it may be employed to cut the end of a cigar.
In order to enable my invention to be fully understood I will describe how it can
be carried into practice by reference to the accompanying drawing in which-
Figure 1 is a front elevation of an automatic or coin-freed dynamometer constructed
according to my invention, the operative parts of the same being in the normal or
zero position.
Figure 2 is a similar view of the upper part of the apparatus, but shewing the
operative parts of the same in one of the positions they occupy when having been
operated upon.
Figures 3 and 4 are a horizontal and a vertical section respectively on the lines A B
and C D of figure 2.
Figure 5 is a section on the line E F of figure 3 showing only a portion of the
anparatus and

page_text: Figures 6 to 9 are views of details, drawn to an enlarged scale, and more fully
hereinafter described.
Similar reference letters indicate similar parts throughout the drawing.
a is the base-plate; b is the standard attached thereto and made hollow in order to
receive the coins, as hereinafter described, and provided with a door b' to afford access
to its interior. The standard b is also provided with an extension 6 which serves to
support the indicating and coin receiving mechanism, the said extension being made
tubular to allow the passage of the coins to the standard or receptacle b.
case e¹.
c is the grip-lever which is pivoted to the top of the standard 6 between which and
the extension 62 is arranged the dynamometer spring d; the said grip-lever is arranged
so close to the extension 6 that both can be grasped simultaneously, and it is advan-
tageously corrugated as shewn to afford a firmer grip. This grip-lever c is provided
with a lug or extension c¹ which passes through a slot e in the bottom of the dial-
c3 is the push-piece or rod jointed to the lug c' and c³ is the guide in which
the push-piece or rod c² works, as shewn most clearly in figure 5. One side e² of the
case el is transparent and forins the dial, it being marked with graduations e³; f is the
pointer or hand pivoted within and to the case e¹ and which, when the apparatus is
operated moves over the dial and indicates the power exerted. The pointer fis pro-
vided with a knob fi on the outside of the case e¹ for the purpose hereinater described;
fis the pin by which it is jointed to the arm g of the coin receptacle g', shewn
detached in side elevation, end elevation and plan in figures 6, 7 and 8 respectively.
g³, g are the holes in the coin-receptacle g¹ through which holes the push-piece c² is
free to pass when no coin is in the said receptacle. The coin-receptacle gl is adapted
to slide upon a plate h (shewn detached in plan at figure 9) fixed at the top of the
standard-extension 62 and provided with an opening h¹, through which a coin can pass,
and with two projecting portions h², h², forming a contracted portion of the said
opening, upon which projecting portions a coin can rest.
i is the coin shoot beneath which the coin-receptacle g' is located when the index-
finger is at zero, the said coin-shoot extending from the money slot j in the top of the
case, and over the contracted portion of the plate h, so that a coin dropped into the
receptacle g will be supported therein. If after a coin has been introduced into the
receptacle g¹, as indicated by the dotted lines in figure 1, the grip-lever c be operated,
the push rod c2 will come against the coin and move it together with the coin-
receptacle gl in the direction of the arrow x figure 1, the said receptacle at the same
time moving the pointer f to which it is connected and thereby indicating on the
dial e the force of the grip. As the coin-receptacle g' is moved forward it is brought
over the opening h¹ in the plate h, so that when the grip is released the coin will drop
through the receptacle gl and extension 62 into the standard b. The grip-lever thus
released returns under, the action of the spring d to its normal position, but the
apparatus cannot be again operated until the pointer f and coin-receptacle g¹ are
moved back to their normal positions by the knob f, that is to say, if a coin be
inserted before such return movement it will drop upon the arm g of the coin-
receptacle g¹, as shewn by the dotted lines at 6 figure 2, so that the push-piece c² is
free to pass through both the holes g³, g leaving the position of the pointer f and
coin receptacle g' unaltered.
The grip-lever may, as shewn, be provided with a cutter m which, when the said
lever is operated passes over a perforated plate n so as to cut the end of a cigar inserted
in either of the perforations.
Although I have shewn and described my improvements as applied to a dynamo-
meter for testing the power of the hand it is to be understood that they are also
applicable to other forms of dynamometer.
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 is
1. In a machine of the kind hereinbefore described, the combination of the

page_text: grip-lever, the money-receptacle and a push-rod connected to the grip-lever and passing
through holes in the money-receptacle, the said money-receptacle being connected to
the index or pointer of the indicating mechanism, substantially as described.
2. The combination with the money-receptacle of the plate upon which the said
receptacle slides, the said plate being adapted to support a coin in the receptacle when
the latter is beneath the coin shoot, and to allow the same to drop when moved away
from the said shoot, substantially as described.
3. The manufacture and use of the improved coin-freed dynamometer herein before
described and illustrated in the accompanying drawing.
Dated the 22nd day of May 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.