Improvements in Indicator Mechanism for Coin Freed Weighing, Strength Testing, and like Machines.
Year: 1892

page_text: Date of Application, 22nd June, 1892-Accepted, 27th Aug., 1892
COMPLETE SPECIFICATION.
Improvements in Indicator Mechanism for Coin Freed Weighing,
Strength Testing, and like Machines.
I, JOSEPH HUBERT BOEKEN, of 9 Devonshire Chambers, 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 has for object ;-
First. Certain details in the construction or arrangement of the dial indicating
mechanism, and Secondly, automatic release action of indicator finger after each
operation.
To carry my invention into practice, and as I show in the annexed drawings, of
which
Figure represents a front elevation the parts in their normal positions.
Figure 2 a similar elevation with the parts in position when first operated,
Figure 3 being a plan taken from the top of Figure 2.
The invention consists of a central rod A with rack B for support by toothed
quadrant lever C mounted on an axle pin D, the socket E of said lever is in the
form of a sleeve, on which the lever F is mounted, so that both lever F and
quadrant C move together, the lever F has at one end a counterpoise G, and to the
other is jointed a claw H, and also a pointer I which is permitted to yield while passing
up and down the teeth of a segmental rack J, the arc of which is struck from the
pin D. The claw H under the action of a spring K engages a stud L, this being
on a lever M mounted loosely on the sleeve E. This lever M has a pin N projecting
forwardly and connected to a toothed quadrant P from which by the pinion Q, the
indicator finger R is turned over the face of a dial which is properly marked to
indicate weights up to, say 20 stone, and the ordinary divisions of a stone.
lever S of the quadrant P has a weight T to overbalance the levers M, S.
The
The central rod A has a vertical motion guided by rollers U, U, and carries at
its lower end an arm V for engaging in a claw W hung from the back plate X.
The claw W is part of a bell crank Y, one leg of which has weight Z, and the
other leg is connected to a rod a, which by means of the bell crank & pivoted at c
can be operated by a coin falling on the stud d forcing the stud d or rode down
nearly to the bottom of the slot at the lower end of the shoot the coin being
inserted through a slot of the casing into the hopper h. i is a horn forming part of
claw W, which horn comes into contact with arm V.
As the rod A lowers, by following the descent of the head k the arm V escapes,
and the weight of the coin on the pin d causes its rod e to descend a little further
for the coin to free itself from the shoot g to drop into the money till.
The action is as follows: A coin after being inserted depresses stud d and draws
down rod e, this causes bell crank to remove claw W from arm V, which leaves
the central rod A free to move down and all the levers C, F, M, S, to turn on the
axle D, and the quadrant P to move the finger R round the dial.
Now supposing a person to be standing on the platform, the head / lowers and
the dial mechanism comes into action.
The movement of the levers F, M, which are temporarily locked together by the
stud L and claw H draws the pointer I down over the face of the ratchet teeth J

page_text: to a distance proportionate to the travel of the finger R and the whole of the
mechanism remains at rest to give sufficient time for a reading of the weight to be
taken. The weight T then begins to descend, and the quadrant P rises to return
the finger R, the weight T in doing so, causes the end of the lever M to cant the
claw H, and the stud L to slide from it, the resistance of I with a tooth of the
segment J ensures this being done, so that the lever M and quadrant Pare
free to return to their normal position and carry the finger back to zero. By this
arrangement, it is impossible that the weighing of a second person can take place
until all the other parts of the mechanism return to their normal condition for a
re-engagement of the claw H and stud L and this can only be effected by the
return of the platform, on the person getting off which alone permits the head
to rise and the remainder of the mechanism to go back to the original position,
(the pointer I sliding over the teeth of the segment J in doing so by the counter-
poise G), until a fresh coin is inserted, and the claw W be released thereby.
The foregoing describes my improvement in connection with a dial by or from
which the weight of a person can be indicated, and is applicable to any kind of
scale platform, or strength testing, or like machine, whether the automatic release
appliances be fitted therewith, or not.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that I am
aware of the Specification of Letters Patent granted to Percival Everitt, No. 16433
of 1884 and that I do not claim anything described and claimed therein but what
I claim is :
1. In coin freed apparatus used for weighing, strength testing, and like purposes,
the combination of mechanism releasable after reception of coin, and having part
automatically governable for returning the indicating finger as herein described,
and substantially as shown by the annexed drawings.
2. In the construction or arrangement of coin freed weight or strength indicating
mechanism, the means or appliances by which when the mechanism has operated,
the indicating finger can be released and return to zero, whether the other parts of
the mechanism return to their normal position or not, as described.
3. In a coin freed weighing or strength testing machine, the construction and
particular arrangement of the several parts constituting the dial or indicator
mechanism, as shown in the drawings annexed and employed alone or in
conjunction with the automatic release and return appliances for preventing fraud,
all as described.
Dated this 22nd doy of Lune 1909
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Joseph Hubert Boeken.