Improvements in Coin-freed Weighing Machines and Dynamometers.
Year: 1888

page_text: · made by order of the Comptroller prior to the sealing of the Patent.]
Date of Application, 13th Apr., 1888
Complete Specification Left, 11th Jan., 1889-Accepted. 16th Feb. 1889
Improvements in Coin-freed Weighing Machines and Dynamometers.
1 HENRY KNIGHT of the Arcade, Ryde, Isle of Wight in the County of
Southampton Importer of Italian Sculptures do hereby declare the nature of this
invention to be as follows:-
My invention consists of the improvements hereinafter described in the arrange-
ments of mechanism for collecting of Tolls, and for controlling the use of the index
finger of a weighing machine or of a strength testing machine as the case may be, and
by the use of the weight of the coin, or coins for this purpose.
I fix mount and arrange such suitable indicating and collecting mechanism to act
by the weight of the money, to indicate on the dial, the weight on the platform of a
weighing machine, and also in a strength testing machine the strength,
-so that the
two arrangements in each case are only brought into contact by the weight of the.
body on the platform of the weighing machine, and the weight of the coin or coins in
the receiving vessel, or in the case of a dynamometer by the pulling of the handles,
the indicating mechanism being the same as used in a weighing machine, and will act
accordingly.
The weighing machine must move first to allow the indicating mechanism to follow,
the same in the case of the dynamometer.
The object in using the large groove wheel with the thin steel band round it, is to
work and hold the receiving vessel, and to increase three or four times the distance of
the travel as it revolves much beyond the rack for the purpose of ejecting the money
from the receiving vessel, and it is absolutely necessary in the case of light weight-
and the counter balance attached to the other steel band, which is round the wheel
will balance the arrangement of mechanism, and in the other arrangement a short
bar of any suitable metal is attached at the top to the bottom of the rack and on the
lower end is a fine gas thread and nut to regulate the index rack and pinion-the same
will adjust the index finger to stand at zero, and will also form a stop, against the
socket hole of the bracket-India rubber or spring may be used above the nut and
under or on the socket, to lessen the shock in the back action-The second rack with
a large tooth wheel where it is used, is for the purpose of increasing the distance of the
travel, and the use of the two pairs of round discs and stops and slots is to adjust the
index finger to the rack, pinion and springs, and to allow the index finger to make a
revolution within the thirty-second of an inch.
The mechanism admits of being fixed and geared, that the index finger in front of
the dial may move upward or downward-the rack is geared to the pinion on the

page_text: vesser is to the grooved wheel band-the counter
balance on the opposite side. The index finger will move downward; and if
required to move upward the fixing and gearing must be on the reverse side of the
spindle.
The dial is marked in pounds and stones and from one pound to twenty six
stone in a weighing machine, and in a Dynamometer from one pound to seven hundred
pounds.
The frame of the machine may be plain or ornamental, the dial glass may be square
or round.
My improvement is especially suited to spring balance weighing machines, and it
may also be applied to other suitably constructed weighing machines and strength
testing machines:
The spring balance weighing machine as ordinarily constructed, consists essentially
of a cast iron column and frame, two coiled springs are suspended from hooks in the
head of the casting, behind the dial, the lower ends of the spring are hooked into the
horizontal part of a Tee piece, and the transferring rod is hooked into the lower vertical
end of the said tecpiece-the other end of the rod is hooked to the long arm of the
lever under the platform.
The compound. levers are provided with nine knife edged bearings-four are used
to hook them to the frame, one for coupling the levers, the other four are for the
platform to rest on.
A rack is pinned to the centre of the Tee piece, so as to form a moveable joint,
and a small coiled spring pressing on its bottom keeps the rack constantly up to its
work.
A pinion is mounted in the centre of the springs, and has its back bearing
in the frame and its front bearing in a fixed bracket piece across the frame,
and the pinion is thereby geared into the teeth of the rack-a dial marked
in pounds and stones is fixed to the castings in front of the pinion, the end of
which projects through a hole in the centre of the dial-on the end is fixed an
indicating finger with its regulating set screw and slotted piece of metal, to set
the finger at zero and any weight placed on the platform will cause the mechanism
to move, and the finger will point out the weight on the dial.
Every weighing machine has a counterpoise in some form, and the variety is
great, but I will further describe those only depending on wheels and tooth
gearing several have a weighted arm projecting from a spindle, the spindle is
mounted horizontally on bearings-a tooth quadrant is fixed to the arm and
spindle, and some have in addition a grooved wheel, cord and weight-when at
rest the weighted arm stands in some cases vertically-in others diagonally-the
spindle communicates with the usual compound platform levers by a cord or band,
that first passes round the spindle, and is then hooked by a rod to the long arm
of the lever.
When a scale pan is used it is connected to a second projection on the said
spindle.
A second spindle is mounted above the first for the purpose only of indicating
the weight on this spindle is a pinion wheel geared to the tooth quadrant below,
the end of the spindle passes through a hole in the centre of a marked dial, an
index finger is fixed on the spindle.
Any weight put on the platform will cause the spindle to partly revolve, and
the tooth quadrant moves the pinion wheel above and so turns the indicating
finger and points out the weight on the dial.
It is the weight or pressure in all cases that moves the mechanism and it is
done in various ways, when the machine is not to collect Tolls, the weight on the
platform is communicated to the index finger in front of the dial by its mechanism
but when a Toll or charge are to be collected without attendance, the mechanism
is locked, or it has an additional index finger, stop, and tooth gearing and is
acted upon in each case by the weight of coin, though very different in its
method and mechanism-The same may be said of coin and coin blanks weighing
.

page_text: machines, so it will be understood that it is not only a coin of the realm that
will set it in motion but any other weight or pressure applied to the receiving
vessel will cause the index finger to move.
"
So also in some machines, will the weight of a person standing on the platform,
move the index finger without the use of coin, if his weight is twenty stone or
upwards, because the arrangement does not admit of a complete revolution of the
index finger, and because the conducting shoot is so constructed that it admits the
use of pressure being applied by using cardboard, whalebone or thin steel to push the
money box down, and so move the index-it requires the coin to be a pre-determined
size or the mechanism will not act, and there being no shifting and adjustable index
arrangements it is frequently seen the index finger standing otherwise than at zero,
and a notice on the face of the machine "out of order or not working."
My improvements are to prevent all the above defects in my weighing or strength
testing machine.
I have seen Everitt's Specification No. 16.433-1884 and Page's Specification
No. 12.576-1885-their indicating mechanism being very similar in some parts."
Both use tooth quadrant having two lever arms-the money box is fixed to one
arm, and the counter balance weight to the other-the quadrant is geared to the index
arbor pinion, the only difference is the money box, and the mode of ejecting the coin
from it, and by Page's Drawings-it appears (but not described) that he uses two sets
of friction wheels, by Everitt's Drawings-it appears (but not described) that he uses
one pair of friction wheels.
Everitt and Page both use two straight.bars, but on the extreme end of one bar is
a stop at right angles.
The index finger in Everitts arrangements moves in front of the dial downward, in
Pages upward.
I have seen the mechanism in two of Everitts machines on Ryde Pier-and they
being different in parts, I have formed an opinion-that both of these machines cannot
be like that described in his specification it either are for instance, in one machine,
the arrangements for receiving the coin in the box and ejecting it is the same as that
described by Everitt, but in the other machine, is that described by Page in his
Specification, and twelve friction wheels are used but not described, a rack is used
in the place of a quadrant but not described-the index finger described as moving
downward, but in the two machines referred to, the index moves the reverse way to
that shown and described in his specification.
In one machine, the connecting rod is connected to a long coiled spring and water
cylinder arrangement which is not described in Everitts specification.
According to one of my improvements, 1 use a wheel with two grooves, and I fix
one end of a thin steel band in each groove, but in opposite directions to the other
end of one band I attach the money receiving vessels, and to the other end of the
second band, I aitach a counter balance weight.
I use one friction wheel on each side of the groove wheel against the steel band to
keep it in the groove, the wheel being mounted in the same way, as the one hereinafter
described as relating to the rack.
Instead of a steel band a strap, cord, or chain, or the like may be used.
The said wheel is mounted on a spindle, and the same spindle carries a tooth pinion
wheel and is mounted in suitable bearings. One end of the spindle projects through
the hole in the centre of the dial to which is fixed the index finger, between the inner
end of the spindle bearing, and the groove wheel is the pinion to this pinion is
geared a tooth rack in the following manner.-
A short piece of steel bar is pinned at the top end to the bottom of the rack so as to
form a working joint, and under the bottom of the rack is a coiled spring, to keep the
rack to its work, and against the back of the rack and opposite the pinion, I use a
friction wheel mounted on a suitable shifting bracket or otherwise with a set regulating
screw to adjust the wheel to the back of the rack to keep it in gearing with the
pinion.
The receiving vessel is kept in a vertical line by guide rods passing through short

page_text: pipes, loops, or eyes, or a groove wheel on the sides of the small frame that carries the
receiving vessel the two guide rods are fixed to a separate frame, or to the frame of
the machine, top and bottom and strained tight by nut and thread.
The vessel is made like a piece of tube, with a flange edge on the top end at
the back, it may be flat, oval or round, open top and bottom, and hung up to the
frame by pivots close under the flange on which it moves, the frame forms the bottom
for the money to rest on, and the flange answers as a lever, in coming against the
catch for the tipping purpose. A small catch is pinned to a bracket and in a slot or
otherwise nearly close to the vessel, the catch is rounded at the upper side, but square
on the under side-this catch is for the purpose of rejecting the coin from the
receiving vessel. When it comes in contact with the flange in its back action and so
moves the receiving vessel off the bottom of the frame, and the money will fall through
into a receiver below.
I provide and fix a guide socket bracket to the frame or casing and over the Tee
piece, and between the two coiled springs to keep it in a vertical line and the short
steel bar and rack attached to it.
The guide socket hole in the bracket may be either round, square, triangular, or
other shape, provided the steel bar is the same shape and fits it nicely so as to allow it
to move freely vertically-but when a round steel bar is used, 1 groove the bar on
two sides, the grooves to be opposite each other-I use two steel screw pins to screw
through the sides of the guide bracket socket holes on each side, and about 1 inches
apart, and one above the other, the points of the screw will take into the groove
sufficiently to keep the bar from turning round, while the guide bracket socket hole
keeps the bar in a vertical line or I use two fixed guide pins, in which case, two
guide slots are necessary in the side of the socket bracket or a framed wheel mounted
on a bracket or a tube fixed to the casing or framing so as to act against the sides and
back of the rack, and to keep it in a vertical line, and so by the aid of the wheel
at the back of the rack, and the spring under the bottom, the rack is kept in
gearing.
In the top and in the centre of the Tee piece, I bore and tap a hole about three
eighths of an inch in diameter and one inch and a quarter deep-1 fit a screw to it,
with a square flat head, the aforesaid guide bracket socket hole, will be exactly over
the screw, and the steel bar will touch the head when at rest, the purpose of this
screw is to regulate and adjust the rack and pinion, which will adjust the index finger
in front of the dial, as the pinion is on the same spindle-also in the back action of
the coiled springs it will force the steel bar up to its normal position and be stopped
by a suitable stop fully described hereinbefore nut and screw either spring or india
rubber may be used to prevent the shock in the back action.
The ordinary method in spring balance weighing machines of attaching the rack to
the Tee piece is dispensed with in this arrangement.
I fix a suitable conducting tube to convey the coin to the receiving vessel-the slot
will be vertical.
This arrangement is fixed to the casing behind the dial, and will extend a little
above and below the dial, but not beyond the sides. The mechanism in each arrange-
ment may be first fitted to a frame, and the same fixed to the casting in its proper
position.
A penny, half pence or farthings are taken, but the amount in value must be the
same as the Toll charge to move the index mechanism, the money may be put into
the slot opening before or while standing on the platform, but the index cannot move
before the person is on the platform, the index mechanism is moved by the weight of
the money only and will follow the weighing mechanism and the weight of the body
on the platform, to indicate the same on the dial.
The action in a weighing machine will be-on a person standing on the platform,
the weighing mechanism will act, and the springs will be extended according to the
weight thereon, but the indicating mechanism will not act, until the money is paid
into the slot opening, and immediately on the money falling into the receiving vessel,
it will move down the guide rods, and so set in motion the indicating mechanism.

page_text: The groove wheel and the counterpoise, the rack and pinion, the steel bar and tho
index finger, are all set in motion at the same time by the weight of the money in the
receiving vessel.
The distance of the index movement is regulated by the weight of the body on the
platform, by the distance the springs are extended, and is stopped by the steel bar
coming in contact with the head of the adjusting screw in the Tee piece. And on tho
weight being removed from the platform, the two coiled springs will return to their
normal position, and so force the weighing and indicating mechanism back to its
normal position.
By the regulating screw head being under the steel bar it is forced up and the rack
turns the pinion, and the groove wheel being on the same spindle, the receiving vessel
is hereby drawn up by the steel band, and the flange of the receiving vessel comes in
contact with a small catch, and so turns the vessel on its pivots, from off the bottom of
the frame and the money thereby falls out into a receiver below.
The action in a Dynamometer may be said to be the same for the only difference
is, a pull to ascertain the strength, instead of the weight of the body on the platform
of a weighing machine.
According to another of my improvements, I mount on one and the same spindle a
wheel with one groove, a large toothed wheel and a pinion wheel, the said spindlo
has two bearings, one end is in the casing between the coiled springs and above the
Tee piece and in the centre-the other has its bearings in a fixed bracket to the casing
close behind the dial-the end of the spindle coming sufficiently through the hole in the
centre of the dial, and on this end is fixed the indicating finger in front of the dial,
the tooth rack works in a guide case, and is geared to the pinion wheel on the lower end
of the rack use the same adjustable arrangements as that described in my first
aforesaid arrangements, the lower end of the rack is over the adjusting screw head in
the Tee piece.
As in the first arrangement I use the second tooth rack works in another case, and
is geared to the large tooth wheel, both racks are on the same side of the spindle, on
the top of the second rack is fixed the necessary vessel and its frame, it is the same
form as in the first arrangement.
This second rack will move much faster and further than the other, for the purpose
of enabling it to eject the money from the receiving vessel in the case of light weight.
The groove wheel has a cord or strap, one end of which is fixed to the wheel and in
the groove, and after one turn of the cord round the wheel, the counter balance weight
is attached to the other end, for the purpose of balancing the two racks and receiving
vessel, and the weight is enclosed in a tube, to keep it in position.
The tripping catch is the same as that used in the first arrangement and several of
the catches may be used in either of the arrangements, one being placed below the
the other, and it is desirable, to prevent a second person being weighed for the same
payment, the money is ejected from the receiving vessel by the flange coming in.
contact with the first catch in the back action.
A tooth quadrant having one lever arm to which the receiving vessel is fixed, and
working on a suitable falerum pin or with two sets of friction wheels, to keep it in
gear, may be substituted and geared to the large tooth wheel in the place of the afore-
Said rack but must be geared to the wheel on the opposite side.
The action will be the same-on the money, as in the first described arrangement,
being paid into the receiving vessel it will over balance the balance weight, and by
the weight of the body on the platform the coiled springs will be extended, and the
two racks will move downwards, and the counter balance weight upwards until the
first rack that is geared to the pinion, comes in contact with the head of the adjusting
screw in the centre of the Tee piece, when it will be stopped, and the indicating
finger having moved at the same time as the racks, will also stop at the same time,
and the finger will then point out the weight on the dial-when the quadrant is
substituted for the rack, the toothed part will move upwards while the rack moves
downwards, but the lever arm with the receiving vessel will move downwards the
same as the rack, and on the weight being removed from the platform, all the

page_text: mechanism will resume its normal position and the money is removed from the
receiving vessel in the same way as described in my first arrangement.
According to another of my improvements I remove only the dial, and index finger
and its adjustable arrangements from the usual spring balance weighing machine and
substitute the following adjustable arrangement behind the dial. I fix on the same
pinion arbor a circular disc, with a round projecting boss in its centre, and I use a
second round disc, having a round hole in its centre to fit on the said boss the said
disc having two slots radiating from its centre and opposite each other, and a thin
steel stop projecting about three quarters of an inch, and near the edge of the disc-
A set screw passes through each slot and screwed into the fixed disc-the stops being
steel will serve to lessen the sudden shock in the back action.
By this arrangement the disc can be moved partly round the boss to the length of
the slots, to adjust the stop on it so that the index finger stands at zero when the
weighing mechanism is at rest, and when the point of zero is ascertained, the two
aforesaid set screws are then screwed tight to prevent the disc from moving.
I use in this arrangement a groove wheel, and a pair of circular discs on the same
spindle the discs will be the same in every way as those already described, and fixed
on the arbor of the pinion, the said spindle is mounted on suitable brackets, one of the
bearings will be close behind the centre of the dial fixed on the casing or separate
frame and the end of the spindle will project through the hole in the centre of the
dial sufficiently to allow of the index finger being fixed on it in front of the disc-the
bearing of the other. end of the spindle is in a bracket fixed to the frame or casing
but the end of the spindle will project through and beyond the bearing sufficiently
to allow of the disc being fixed to it, the purpose of this pair of discs is to adjust
the index finger so that it shall stand at zero when at rest, and as the two pair
of discs have stops, slots and set screw, and heing the same in every way and for
the same purpose, the spindle is mounted on the same horizontal line as the pinion,
so that the two pair of discs will be face to face with each other, and the stops
against each other when at rest.
Certain parts hereinafter named are used in this arrangement in the same way,
and for the same purposes, that are used in my first arrangement, hereinbefore
described, viz. the groove wheel, steel bands, friction wheel, counter balance
weight, the guide tube, the two guide rods, the receiving vessel, the catch and the
bracket that are necessary to fix the same, and the conducting tube and the
necessary stops and guides and balance weight and a buffer stop over the Tee piece
to check the sudden shock that may be in the back action.
The following may be substituted for the two guide rods if desirable-A tube
with a long slot, and a short piece of smaller size tube with a projecting arm at
right angles, the arm coming or extending through the slot, the receiving vessel is
fixed to this arm, and a steel band is attached to the small tube, it will move up
and down the large tube freely, and act as a guide in the place of the guide rods.
The tune is fixed vertically.
-The index
The Toll may be paid before slipping on the platform, or when on.-
finger will not move before the money is paid.
The action will be as soon as any weight is put on the platform of the machine,
the two coiled springs will be extended according the weight, and the rack pulled
round the pinion which turns the disc, and on the amount of Toll being paid into
the receiving vessel it will move down the guide rod and the index finger will
move at the same time, and will he stopped by the two disc stops meeting each
other, and the index finger will then point out the weight on the dial,--and when
the weight is removed from the platform, in the back action, the coiled springs
will return to their normal position, and so forcing all the mechanism to its normal
position by the back action of the two disc stops.
Dated this 12th day of Anril LSSS

page_text: 1 HENRY KNIGHT, of The Arcade, Ryde, Isle of Wight in the County of Southampton,
Importer of Italian Sculptures 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 :-
My invention consists of the improvements hereinafter described in the combined
arrangements of mechanism for collecting of Tolls and for controlling the use of the
index finger of a weighing machine, or of a strength testing machine as the case may
be, and by the use of the weight of the coin or coins for this purpose.
The weighing machine mechanism moves first to allow the indicating mechanism to
follow until the rack is stopped by the Tee piece, the same in the case of the Dynamo-
meter machine.
The dial is marked in pounds and stones and from one pound to twenty six stone
in a weighing machine; and in a Dynamometer from one pound to seven hundred
pounds.
The frame of the machine may be plain or ornamental. The dial glass may be square
or round.
My improvement is especially suited to Pooley's, Salters, or other well known
spring balance platform weighing machines and it may also be applied to other
suitably constructed weighing machines and strength testing machines.
My improvements are to prevent the defects caused by the combined use of the coin
in a weighing or strength testing machine. The dial being marked to agree to the
weight on the platform and in combination with the weight of the coin in the receiving
vessel.
According to one of my improvements, I use a wheel with two grooves and I fix
one end of a thin steel band in each groove, but in opposite directions-To the other
end of one band I attach the money receiving vessels, and to the other end of the
second band I attach a counter balance weight.
I use one friction wheel on each side of the groove wheel against the steel band to
keep it in the groove, the wheel being suitably mounted for that purpose.
Instead of using a steel band a strap, cord, chain or the like may be used.
The said wheel is mounted on a spindle, and the same spindle carries a tooth
pinion wheel, the bearings of the spindle are on friction wheels or otherwise. One
end of the spindle projects through the hole in the centre of the dial to which is fixed
the index finger. The pinion is geared to a tooth rack in the following manner.-
A short piece of metal bar is pinned at the top end and to the bottom of the rack so
as to form a working joint, and under the bottom of the rack is a coiled spring, to
keep the rack to its work, and against the back of the rack and opposite the pinion, I
use a friction wheel mounted on a plate at the back of the rack to keep it in gearing
with the pinion.
The
The receiving vessel is kept in a vertical line by two guide rods passing through
loop eyes on the sides of the small frame that carries the receiving vessel.
two guide rods are fixed to the frame of the machine and strained tight by nut and
thread.
The vessel is made with a flange edge on the top and at the back and is open top
and bottom, and hung up to the frame by pivots close under the flange on which it

page_text: moves when tilted. The frame forms the bottom for the money to rest on, and the
flange answers as a lever, in coming against the movable catch-This small catch is
loosely pinned to a bracket in a slot or otherwise, the catch is rounded at the top edge,
but square on the bottom this catch is for the purpose of ejecting the coin from the
receiving vessel by tilting it when, it comes in contact with the flange in its back
action and so moves the receiving vessel off the bottom of the frame, and the money
will fall through into a receiver below.
I provide and fix a guide socket bracket to the frame or casing, and over the
Tec piece, and between the two coiled springs to keep in a vertical line and the short
metal bar and rack attached to it.
The guide socket hole in the bracket may be either round, square, flat or other
shape provided the metal bar is the same shape and fits it nicely so as to allow it to
move freely vertically-but when a round metal bar is used the guide socket bracket
hole is partly slotted to allow the two projecting pins that are fixed into the
round bar to move up and down the slot and to prevent the said bar from
turning round, the bar is also kept in a vertical line by the socket or a groove
wheel fixed or mounted to the plate or casting so as to act as a guide against the sides
and back of the rack and so to keep it in gearing and in a vertical line and the spring
under the bottom of the first named rack is to keep it in gearing.
In the top and near the centre of the horizontal part of the Tee-piece I fit a screw
with a large flat head the aforesaid guide bracket socket hole will be exactly over the
screw, and the metal bar will touch the screw head when at rest, the purpose of this
screw is to regulate and adjust the rack and pinion, which will adjust the index finger
in front of the dial so also will the screw nut on the bottom of the rack or the screw
collar on the bottom of the guide socket adjust the same, as the pinion is on the
spindle the aforesaid Tee piece is the stop and will stop the rack according to the
distance the weight on the platform of the machine moves it-also in the back action
of the coiled springs when the weight is removed from the platform it will force the
metal bar up to its normal position and be stopped by a fixed stop in the plate over the
Tee-piece.
The ordinary method in spring balance platform weighing machines of attaching
the rack to the Tee-piece is dispensed with in my arrangement, it being quite a new
method of using the rack as herein described.
I fix a suitable conducting tube to convey the coin to the receiving vessel-the slot
will be vertical or otherwise.
A penny, halfpence or farthings are taken but the amount in value must be the
same as the toll charge to move the index mechanism, the money may be put into
the slot opening before or while standing on the platform, but I prefer while the weight
is on the platform, but the index cannot move before the person or other weight is on
the platform, the index mechanism is moved by the weight of the money only and will
follow the weighing mechanism and the weight of the body or goods of any kind on
the platform to indicate the same on the dial.
The action in a weighing machine will be-on a person standing or placing any
weight on the platform, the weighing mechanism will act, and the springs will be
extended according to the weight thereon, but the indicating mechanism will not act
until the money is paid into the slot opening, and immediately on the money falling
into the receiving vessel, it will move down the guide rods, and so set in motion the
indicating mechanism.
The groove wheel and the counterpoise, the rack and pinion, the metal bar and the
index finger are all set in motion at the same time by the weight of the money in
the receiving vessel.
The distance of the index movement is regulated by the weight of the body on the
platform by the distance the springs are extended, and the rack is stopped by the metal
bar coming in contact with the head of the adjusting screw in the Tee-piece-And on
the weight being removed from the platform, the two coiled springs will return to
their normal position, and so force the weighing and indicating mechanism back to
its normal position.

page_text: By the Tee-piece being under the metal bar it will force up the rack turn the pinion,
and the groove wheel being on the same spinde, the receiving vessel is hereby
drawn up by the steel band, or cord or chain, and the flange of the receiving vessel
thereby comes in contact with a small catch, and so turns the vessel on its pivots
and the bottom from off the frame and the money thereby falls out into a receiver
below.
The action in a Dynamometer may be said to be the same for the only difference
is a pull to ascertain the strength, instead of the weight of the body on the platform
of a weighing machine.
According to another of my improvements I mount a grooved wheel, as before, on
a spindle the said spindle has a pinion wheel and two hearings, one end is in the
casing or plate between the coiled springs and above the Tee piece and in the centre
the other end has its bearings on friction wheels on a fixed bracket to the casing
close behind the dial-the end of the spindle coming sufficiently through the hole
in the centre of the dial-and on this end is fixed the indicating finger in front
of the dial-The tooth rack works in a guide, flat hollow case or socket and is
thereby kept geared to the pinion wheel. The lower end of the rack is over the Tee-
piece and is formed in one flat piece of metal. The said rack will rest on the
horizontal part of the Tee-piece, when at its normal position the Tee-piece acts as a
stop; over the top end of the rack I use the adjustable screw arrangement in com-
bination with the sliding adjustable weight attached to the long arm of the compound
levers under the platform it answers the same purpose as the screw in the Tee-piece,
if the said weight is moved forward the arm is depressed if moved backwards the reverse
is the case.
The groove wheel has a cord or strap, one end of which is fixed to the wheel and in
the groove, and after one turn of the cord round the wheel, the counter balance
weight is attached to the other end, for the purpose of balancing the receiving vessel,
and the weight is enclosed in a tube to keep it in position.
The tripping catch and guide rods are the same as used in the first arrangement
and several of the catches may be used in either of the arrangements, one being placed
being the other, and it is desirable to prevent a second person or other things being
weighed for the same payment-the money is ejected from the receiving vessel by
the flange coming in contact with the first catch in the back action.
The action will be the same on the money being paid, as in the first described
arrangement, into the receiving vessel, it will partly retake the grooved wheel and
overbalance the balance weight. As soon as the weight of the body is put on the
platform the coiled springs will be extended and the rack will move downwards and
will be stopped by the Tee-piece and the indicating finger having moved at the same
time will then point out the weight on the dial-And on the weight being removed
from the platform all the mechanism will resume its normal position. The money
is removed from the receiving vessel in the same way as described in my first
arrangement.
A tube
The following may be substituted for the two guide rods if desirable.
with a long slot, and a short piece of smaller size tube with a projecting arm at
right angles, the arm coming or extending through the slot, the receiving vessel is
fixed to this arni and a steel band is attached to the small tube, it will move up and
down the large tube freely, and act as a guide in the place of the guide rods. The
tube is fixed vertically.
According to another of my improvements I use the same coin-freed combination
hereinbefore described to a weighing machine with the usual platform for weighing
goods or other things suitable for a market or other places.
In order to enable my invention to be fully understood I will proceed to describe
the saine by reference to the accompanying drawings-
Fig. 1 is a front elevation of the upper portion of a weighing machine constructed
according to my improvement with the dial removed so as to show the mechanism
more clearly.
,'ה..'ת
national ride alevation

page_text: Figs. 5 and 6 are enlarged details of the rack, pinion, friction wheel, socket &c.
Fig. 7 is an elevation of rack and metal rod as shown in Figs. 5 and 6.
Fig. 8 is an enlarged detail.of another kind of rack.
Fig. 9 is a side view of part of same.....
T
T
Figs. 10 and 11 are enlarged details of another kind of rack.
Figs. 12 and 13 are details showing: friction wheels required for grooved wheel
when steel bands are used: Similar letters in. all the Figures represent similar
parts.
I will first describe my improvements by reference to Figs. 1 to 7. a is the frame
or casing of the machine ib bare the coiled springs which are, suspended. from the.
lugs 62 by hooks 161 which are provided with nuts and threads so as to allow of their
being adjusted to the greatest nicety, is the grooved wheel to which are attached
the chains's (straps, steel bands, cords &c whichever are used) that have the receiving.
vessel and balance weight s¹ attached to them; d is the rack, d is the metal bar
attached to the bottom of rack d and working in the socket h', e is the spindle and
pinion, the spindle passes through the dial and to that end the index finger is attached,
is the grooved friction wheel at back of rack d to keep it up to its work and: to keep
it from turning. is bracket for attaching same to plate h, and plate h is fixed to a
boss at back of casing a by means of screws u u, is a plate or bracket to carry the
end of spindle e and is fixed to the casing a by screws. i is a screwed collar which by
being screwed or unscrewed will adjust the rack d and metal bar d² and pinion e. and
consequently the index finger of the dial, is the Tee-piece suspended from the coiled
springs, d is a square headed screw tapped into the top of Tee-piece ; for metal;
bar d to rest against and also for adjusting rack, pinion &c., is a. coupling piece
attached to Tee-piece j by bolt and nut k¹, is the rod connecting the mechanism of
platform a to the coiled springs b, m is the shoot to carry the money into the receiving
vessel o, n is the frame carrying the receiving vessel o, n' is the spindle on which the
receiving vessel moves in tipping out the money, o' is a flange at back of receiving
vessel o, p is the bracket for carrying the catch 7, said bracket p being moveable so
as to allow of being placed anywhere in the rod 2, rare brackets to, which the
guide rods and the rod 2 (carrying the catch g) are fixed, The drawings only
show one catch 9 but there may be any number of them placed at any distance, on
the rod, ss are the chains fixed in the two grooves of the grooved, wheel c one end
of each chain is fastened to the grooved wheel c one in each groove but in opposite
directions, when the machine is at rest the chain attached to the receiving vessel o is
wound round the grooved wheel c, tt are the compound levers of the usual mechanism
employed in platform weighing machines, vare sinall coiled springs to act as buffers
to check the recoil of the receiving vessel o. ware wheels on which machine is
mounted, are set screws for setting machine level, a' is the platform, a² is the
fender to prevent more than one person from stepping on the machine at once, a³ is
a door in frame a for taking out money.
เ
When a person places himself (or a body to be weighed) on the platform a¹ the
compound levers will pull down the rod 7 and Tee-piece j so extending the springs to
a distance corresponding with the weight on the platform. When the money is placed
in the shoot m it passes into tho receiving vessel o and the said vessel o immediately
descends causing the grooved wheel c and the spindle and pinion e to rotate
so causing the rack d and metal bar d² to descend through socket ' until the end of
the metal bar d rest on the head, of screw don, the Tee-piece, when the weight of
the body or person on the platform will be indicated on the dial. As the receiving
vessel descends the catch y tilts up and allows the flange o' to pass.. When the
weight, is taken off the platform at the springs b contract and the Tee-piece j, pushes
up the metal bar d² and rack d so, causing the mechanism to resume its normal
position. As the receiving vessel o. rises the flange o' comes in contact with the
catchigwhich is now rigid and so causes the receiving vessel o to tip as shown by
dotted lines in Fig. 3 and so release the money.
In Figs. 8 and 9 I show the rack d cranked and jointed into metal rod
5.
• 1
the rack

page_text: is
being kept up to its work by means of a small friction wheel fixed to the casing a
in slot so as to allow of its being adjusted, f' is the spindle of friction wheel
a small cotter to fix wheel, i is the nut for adjusting metal bar d² rack & pinion &c.
The metal bar d in this method works in a slotted socket and has guide pins d to
keep it from turning. Another method is not drawn as the only difference from
that in Figs. 8 and 9 is that the metal bar d² is square and the socket is square so
doing away with guide pins d'.
.
Figs. 10 and 11 show another method. The socket h¹ is very short at bottom as is
also metal bar d' but the socket is continued right up over the rack but flat and a
portion cut away for pinion.
In Figs. 12 and 13. c is the grooved wheel, e the spindle and pinion, f small
friction wheels to keep steel bands ss in their places, the spindle of friction
wheels ff, ff are slots to allow of the friction wheels ff being adjusted.
Fig. 12 shows additional friction wheels f³, mounted on plate g, e is the spindle
bearing on the said wheels.
Fig. 14 is a front elevation of a flat rack, guide sockets and pinion connected to
a plate.
Fig. 15 is a side elevation.
I will describe another modification, of my improvements by reference to Figs. 14
and 15. h h is a fixing plate, h¹ are two guide sockets to keep the rack d, in
gearing with the pinion e, d' is a regulating screw over the rack to adjust the index
finger.
Fig. 16 is a front elevation of a slotted Tee-piece, a a is the casing, d¹ is a
regulating screw to adjust the index finger which comes under the rack d, j is a
Tee-piece, is a slot to allow it to move, is a stop pin in the slot, is a hole to
hook the rod into, is a connecting rod the lower end of which is booked to the
long arm of the compound levers under the platform.
In constructing a Dynamometer (although I have not shown separate Drawings) it
will be understood 1 fix two convenient pull handles to the frame of a weighing
machine so that the weight and strength may be had for one payment; or the
bereinbefore described indicating mechanism may be applied and used to any suitably
constructed 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 I am aware of
Everitts specification No. 16433 of 1884 Page's specification No. 12576 of 1885 and
Ubrig's specification No. 1979 of 1887 and I do not claim anything therein described or
claimed, what I claim is :-
1. The combination and arrangement of mechanism hereinbefore described and
represented in Figs. 1 to 6 or with either of their modifications in Figs. 7 to 15 of the
accompanying Drawings.
2. The combination and arrangement of the indicating mechanism hereinbefore
described and shown in the accompanying Drawings with a Dynamometer.
3. The receiving vessel o, and its frame n, and the guide rods ; the method of
using the rack d, for indicating purposes and the regulating screws d' guide sockets h¹
and metal rod d³, screw collar moveable catch 9, grooved friction wheel f, applied as
hereinbefore described and shown in the accompanying Drawings.
Dated this Ninth day of January 1889
HENRY KNIGHT.

page_text: Date of Application, 13th Apr., 1888
Complete Specification Left, 11th Jan., 1889
Complete Specification Accepted, 16th Feb., 1889
Improvements in Coin-freed Weighing Machines and Dynamometers.
I HENRY KNIGHT of the Arcade, Ryde, Isle of Wight in the County of
Southampton Importer of Italian Sculptures do hereby declare the nature of, this
invention to be as follows:-
arrange-
My invention consists of the improvements hereinafter described in the
ments of mechanism for collecting of Tolls, and for controlling the use of the index
finger of a weighing machine or of a strength testing machine as the case may be, and
by the use of the weight of the coin, or coins for this purpose.
I fix mount and arrange such suitable indicating and collecting mechanism to act
by the weight of the money, to indicate on the dial, the weight on the platform of a
weighing machine, and also in a strength testing machine the strength, so that the
two arrangements in each case are only brought into contact by the weight of the
body on the platform of the weighing machine, and the weight of the coin or coins in
the receiving vessel, or in the case of a dynamometer by the pulling of the handles,
the indicating mechanism being the same as used in a weighing machine, and will act
accordingly.
The weighing machine must move first to allow the indicating mechanism to follow,
the same in the case of the dynamometer.
The object in using the large groove wheel with the thin steel band round it, is to
work and hold the receiving vessel, and to increase three or four times the distance of
the travel as it revolves much beyond the rack for the purpose of ejecting the money
from the receiving vessel, and it is absolutely necessary in the case of light weight-
and the counter balance attached to the other steel band, which is round the wheel
will balance the arrangement of mechanism, and in the other arrangement a short
bar of any suitable metal is attached at the top to the bottom of the rack and on the
lower end is a fine gas thread and nut to regulate the index rack and pinion—the same
will adjust the index finger to stand at zero, and will also form a stop against the
socket hole of the bracket-India rubber or spring may be used above the nut and
under or on the socket, to lessen the shock in the back action-The second rack with
a large tooth wheel where it is used, is for the purpose of increasing the distance of the
travel, and the use of the two pairs of round discs and stops and slots is to adjust the
index finger to the rack, pinion and springs, and to allow the index finger to make a
revolution within the thirty-second of an inch.
The mechanism admits of being fixed and geared, that the in lex finger in front of
the dial may move upward or downward-the rack is geared to the pinion on the

page_text: balance on the opposite side.
esser is to the grooved wheel band-the counter
The index finger will move downward; and if
required to move upward the fixing and gearing must be on the reverse side of the
spindle.
The dial is marked in pounds and stones and from one pound to twenty six
stone in a weighing machine, and in a Dynamometer from one pound to seven hundred
pounds.
The frame of the machine may be plain or ornamental, the dial glass may be square
or round.
My improvement is especially suited to spring balance weighing machines, and it
may also be applied to other suitably constructed weighing machines and strength
testing machines.
The spring balance weighing machine as ordinarily constructed, consists essentially
of a cast iron column and frame, two coiled springs are suspended from hooks in the
head of the casting, behind the dial,-the lower ends of the spring are hooked into the
horizontal part of a. Tee piece, and the transferring rod is hooked into the lower vertical
end of the said teepiece--the other end of the rod is hooked to the long arm of the
lever under the platform.
The compound levers are provided with nine knife edged bearings-four are used
to hook them to the frame, one for coupling the levers, the other four are for the
platform to rest on.
A rack is pinned to the centre of the Tee piece, so as to form a moveable joint,
and a small coiled spring pressing on its bottom keeps the rack constantly up to its
work.
A pinion is mounted in the centre of the springs, and has its back bearing
in the frame and its front bearing in a fixed bracket piece across the frame,
and the pinion is thereby geared into the teeth of the rack-a dial marked
in pounds and stones is fixed to the castings in front of the pinion, the end of
which projects through a hole in the centre of the dial-on the end is fixed an
indicating finger with its regulating set. screw and slotted piece of metal, to set.
the finger at zero and any weight placed on the platform will cause the mechanism
to move, and the finger will point out the weight on the dial.
Every weighing machine has a counterpoise in some form,--and the variety is
great, but will further describe those only depending on wheels and tooth
gearing several have a weighted arm projecting from a spindle, the spindle is
mounted horizontally on bearings a tooth quadrant is fixed to the arm and
spindle, and some have in addition a grooved wheel, cord and weight-when at
rest the weighted arm stands in some cases vertically-in others diagonally-the
spindle communicates with the usual compound platform levers by a cord or band,
that first passes round the spindle, and is then hooked by a rod to the long arm
of the lever."
When a scale pan is used it is connected to a second projection on the said
spindle.
1
A second spindle is mounted above the first for the purpose only of indicating
the weight on this spindle is a pinion wheel geared to the tooth quadrant below,
the end of the spindle passes through a hole in the centre of a marked dial, an
index finger is fixed on the spindle.
Any weight put on the platform will cause the spindle to partly revolve, and
the tooth quadrant moves the pinion wheel above and so turns the indicating
finger and points out the weight on the dial.
It is the weight or pressure in all cases that moves the mechanism and it is
done in various ways, when the machine is not to collect Tolls, the weight on the
platform is communicated to the index finger in front of the dial by its mechanism
but when a Toll or charge are to be collected without attendance, the mechanism
is locked, or it has an additional index finger, stop, and tooth gearing and is
acted upon in each case by the weight of coin, though very different in its
method and mechanism-The same may be said of coin and coin blanks weighing

page_text: machines, so it will be understood that it is not only a coin of the realm that
will set it in motion but any other weight or pressure applied to the receiving
vessel will cause the index finger to move.
So also in some machines, will the weight of a person standing on the platform,
move the index finger without the use of coin, if his weight is twenty stone or
upwards, because the arrangement does not admit of a complete revolution of the
index finger, and because the conducting shoot is so constructed that it admits the
use of pressure being applied by using cardboard, whalebone or thin steel to push the
money box down, and so move the index-it requires the coin to be a pre-determined
size or the mechanism will not act, and there being no shifting and adjustable index
arrangements it is frequently seen the index finger standing otherwise than at zero,
and a notice on the face of the machine "out of order
or not working."
My improvements are to prevent all the above defects in my weighing or strength
testing machine.
I have seen Everitt's Specification No. 16.483-1884 and Page's Specification
No. 12,576-1885-their indicating mechanism being very similar in some parts.
Both use tooth quadrant having two lever arms--the money box is fixed to one
arm, and the counter balance weight to the other-the quadrant is geared the index
arbor pinion, the only difference is the money box, and the mode of ejecting the coin
from it, and by Page's Drawings-it appears (but not described) that he uses two sets
of friction wheels, by Everitt's Drawings-it appears (but not described) that he uses
one pair of friction wheels.
Everitt and Page both use two straight bars, but on the extreme end of one bar is
a stop at right angles.
The index finger in Everitts arrangements moves in front of the dial downward, in
Pages upward.
I have seen the mechanism in two of Everitts machines on Ryde Pier-and they
being different in parts, I have formed an opinion--that both of these machines cannot
be like that described in his specification if either are-for instance, in one machine,
the arrangements for receiving the coin in the box, and ejecting it is the same as that
described by Everitt, but in the other machine, is that described by Page in his
Specification, and twelve friction wheels are used but not described, a rack is used
in the place of a quadrant but not described-the index finger is described as moving
downward, but in the two machines referred to, the index moves the reverse way to
that shown and described in his specification.
In one machine, the connecting rod is connected to a long coiled spring and water
cylinder arrangement which is not described in Everitts specification.
According to one of my improvements, I use a wheel with two grooves, and I fix
one end of a thin steel band in each groove, but in opposite directions-to the other
end of one hand I attach the money receiving vessels, and to the other end of the
second band, I attach a counter balance weight.
I use one friction wheel on each side of the groove wheel against the steel band to
keep it in the groove, the wheel being mounted in the same way, as the one hereinafter
described as relating to the rack.
Instead of a steel band a strap, cord, or chain, or the like may be used.
The said wheel is mounted on a spindle, and the same spindle carries a tooth pinion
wheel and is mounted in suitable bearings. One end of the spindle projects through
the hole in the centre of the dial to which is fixed the index finger, between the inner
end of the spindle bearing, and the. groove wheel is the pinion to this pinion is
geared a tooth rack in the following manner-
A short piece of steel bar is pinned at the top end to the bottom of the rack so as to
form a working joint, and under the bottom of the rack is a coiled spring, to keep the
rack to its work, and against the back of the rack and opposite the pinion, I use a
friction wheel mounted on a suitable shifting bracket or otherwise with a set regulating
screw to adjust the wheel to the back of the rack to keep it in gearing with the
pinion.
The receiving vessel is kept in a vertical line by guide rods passing through short

page_text: pipes, loops, or eyes, or a groove wheel on the sides of the small frame that carries the
receiving vessel-the two guide rods are fixed to a separate frame, or to the frame of
the machine, top and bottom and strained tight by nut and thread.
The vessel is made like a piece of tube, with a flange edge on the top end at
the back, it may be flat, oval or round, open top and bottom, and hung up to the
frame by pivots close under the flange on which it moves,the frame forms the bottom
for the money to rest on, and the flange answers as a lever, in coming against the
catch for the tipping purpose. A small catch is pinned to a bracket and in a slot or
otherwise nearly close to the vessel, the catch is rounded at the upper side, but square
on the underside-this catch is for the purpose of rejecting the coin from the
receiving vessel. When it comes in contact with the flange in its back action and so
moves the receiving vessel off the bottom of the frame, and the money will fall through
into a receiver below.
I provide and fix a guide socket bracket to the frame or casing and over the Tee
piece, and between the two coiled springs to keep it in a vertical line and the short
steel bar and rack attached to it.
The guide socket hole in the bracket may be either round, square, triangular, or
other shape, provided the steel bar is the same shape and fits it nicely so as to allow it
to move freely vertically-but when a round steel bar is used, I groove the bar on
two sides, the grooves to be opposite each other-I use two steel screw pins to screw
through the sides of the guide bracket socket holes on each side, and about 14 inches
apart, and one above the other, the points of the screw will take into the groove
sufficiently to keep the bar from turning round, while the guide bracket socket hole
keeps the bar in a vertical line or I use two fixed guide pins, in which case, two
guide slots are necessary in the side of the socket bracket or a framed wheel mounted
on a bracket or a tube fixed to the casing or framing so as to act against the sides and
back of the rack, and to keep it in a vertical line, and so by the aid of the wheel
at the back of the rack, and the spring under the bottom, the rack is kept in
gearing.
In the top and in the centre of the Tee piece, I bore and tap a hole about three
eighths of an inch in diameter and one inch and a quarter deep-I fit a screw to it,
with a square flat head, the aforesaid guide bracket socket hole, will be exactly over
the screw, and the steel bar will touch the head when at rest, the purpose of this
screw is to regulate and adjust the rack and pinion, which will adjust the index finger
in front of the dial, as the pinion is on the same spindle-also in the back action of
the coiled springs it will force the steel bar up to its normal position and be stopped
by a suitable stop fully described hereinbefore nut and screw either spring or india
rubber may be used to prevent the shock in the back action.
The ordinary method in spring balance weighing machines of attaching the rack to
the Tee piece is dispensed with in this arrangement.
I fix a suitable conducting tube to convey the coin to the receiving vessel-the slot
will be vertical.
This arrangement is fixed to the casing behind the dial, and will extend a little
above and below the dial, but not beyond the sides. The mechanism in each arrange-
ment may be first fitted to a frame, and the same fixed to the casting in its proper
position.
A penny, half pence or farthings are taken, but the amount in value inust be the
same as the Toll charge to move the index mechanism, the money may be put into
the slot opening before or while standing on the platform, but the index cannot move
before the person is on the platform, the index mechanism is moved by the weight of
the money only and will follow the weighing mechanism and the weight of the body
on the platform, to indicate the same on the dial.
The action in a weighing machine will be-on a person standing on the platform,
the weighing mechanism will act, and the springs will be extended according to the
weight thereon, but the indicating mechanism will not act, until the money is paid
into the slot opening, and immediately on the money falling into the receiving vessel,.
it will move down the guide rods, and so set in motion the indicating mechanism.

page_text: The groove wheel and the counterpoise, the rack and pinion, the steel bar and the
index finger, are all set in motion at the same time by the weight of the money in the
receiving vessel.
The distance of the index movement is regulated by the weight of the body on the
platform, by the distance the springs are extended, and is stopped by the steel bar
coming in contact with the head of the adjusting screw in the Tee piece. And on the
weight being removed from the platform, the two coiled springs will return to their
normal position, and so force the weighing and indicating mechanism back to its
normal position.
By the regulating screw head being under the steel bar it is forced up and the rack
turns the pinion, and the groove wheel being on the same spindle, the receiving vessel
is hereby drawn up by the steel band, and the flange of the receiving vessel comes in
contact with a small catch, and so turns the vessel on its pivots, from off the bottom of
the frame and the money thereby falls out into a receiver below.
The action in a Dynamometer may be said to be the same for the only difference
is, a pull to ascertain the strength, instead of the weight of the body on the platform
of a weighing machine.
According to another of my improvements, I mount on one and the same spindle a
wheel with one groove, a large toothed wheel and a pinion wheel, the said spindle
has two bearings, one end is in the casing between the coiled springs and above the
Tee piece and in the centre-the other has its bearings in a fixed bracket to the casing
close behind the dial-the end of the spindle coming sufficiently through the hole in the
centre of the dial, and on this end is fixed the indicating finger in front of the dial,-
the tooth rack works in a guide case, and is geared to the pinion wheel on the lower end
of the rack I use the same adjustable arrangements as that described in
first
aforesaid arrangements, the lower end of the rack is over the adjusting screw head in
the Tee piece.
my
and
As in the first arrangement I use the second tooth rack works in another case,
is geared to the large tooth wheel, both racks are on the same side of the spindle, on
the top of the second rack is fixed the necessary vessel and its frame, it is the same
form as in the first arrangement.
This second rack will move much faster and further than the other, for the purpose
of enabling it to eject the money from the receiving vessel in the case of light weight.
The groove wheel has a cord or strap, one end of which is fixed to the wheel and in
the groove, and after one turn of the cord round the wheel, the counter balance weight
is attached to the other end, for the purpose of balancing the two racks and receiving
vessel, and the weight is enclosed in a tube, to keep it in position.
The tripping catch is the same as that used in the first arrangement and several of
the catches may be used in either of the arrangements, one being placed below the
the other, and it is desirable, to prevent a second person being weighed for the same
payment the money is ejected from the receiving vessel by the flange coming in
contact with the first catch in the back action.
A tooth quadrant having one lever arm to which the receiving vessel is fixed, and
working on a suitable fulcrum pin or with two sets of friction wheels, to keep it in
gear, may be substituted and geared to the large tooth wheel in the place of the afore-
said rack but must be geared to the wheel on the opposite side..
The action will be the same-on the money, as in the first described arrangement,
being paid into the receiving vessel it will over balance the balance weight, and by
the weight of the body on the platform the coiled springs will be extended, and the
two racks will move downwards, and the counter balance weight upwards until the
first rack that is geared to the pinion, comes in contact with the head of the adjusting
screw in the centre of the Tee piece, when it will be stopped, and the indicating
finger having moved at the same time as the racks, will also stop at the same time,
and the finger will then point out the weight on the dial-when the quadrant is
substituted for the rack, the toothed part will move upwards while the rack inoves
downwards, but the lever arm with the receiving vessel will move downwards the
same as the rack, and on the weight being removed from the platform, all the

page_text: mechanism will resume its normal position and the money is removed from the
receiving vessel in the same way as described in my first arrangement.
According to another of my improvements I remove only the dial, and index finger
and its adjustable arrangements from the usual spring balance weighing machine and
substitute the following adjustable arrangement behind the dial. I fix on the same
pinion arbor a circular disc, with a round projecting boss in its centre, and I use a
second round disc, having a round hole in its centre to fit on the said boss tho said
disc having two slots radiating from its centre and opposite each other, and a thin
steel stop projecting about three quarters of an inch, and near the edge of the disc-
A set screw passes through each slot and screwed into the fixed disc-the stops being
steel will serve to lessen the sudden shock in the back action.
By this arrangement the disc can be moved partly round the boss to the length of
the slots, to adjust the stop on it so that the index finger stands at zero when the
weighing mechanism is at rest, and when the point of zero is ascertained, the two
aforesaid set screws are then screwed tight to prevent the disc from moving.
I use in this arrangement a groove wheel, and a pair of circular discs on the same
spindle the discs will be the same in every way as those already described, and fixed
on the arbor of the pinion, the said spindle is mounted on suitable brackets, one of the
bearings will be close behind the centre of the dial fixed on the casing or separate
frame and the end of the spindle will project through the hole in the centre of the
dial sufficiently to allow of the index finger being fixed on it in front of the disc-the
bearing of the other end of the spindle is in a bracket fixed to the frame or casing
but the end of the spindle will project through and beyond the bearing sufficiently
to allow of the disc being fixed to it, the purpose of this pair of discs is to adjust
the index finger so that it shall stand at zero when at rest, and as the two pair
of discs have stops, slots and set screw, and being the same in every way and for
the same purpose, the spindle is mounted on the same horizontal line as the pinion,
so that the two pair of discs will be face to face with each other, and the stops
against each other when at rest.
Certain parts hereinafter named are used in this arrangement in the same way,
and for the same purposes, that are used in my first arrangement, hereinbefore
described, viz. the groove wheel, steel bands, friction wheel, counter balance
weight, the guide tube, the two guide rods, the receiving vessel, the catch and the
bracket that are necessary to fix the same, and the conducting tube and the
necessary stops and guides and balance weight and a buffer stop over the Tee piece
to check the sudden shock that may be in the back action.
The following may be substituted for the two guide rods if desirable-A tube
with a long slot, and a short piece of smaller size tube with a projecting arm at
right angles, the arm coming or extending through the slot, the receiving vessel is
fixed to this arm, and a steel band is attached to the small tube, it will move up
and down the large tube freely, and act as a guide in the place of the guide rods.
The tube is fixed vertically.
The Toll may be paid before slipping on the platform, or when on.-The index
finger will not move before the money is paid.
The action will be-as soon as any weight is put on the platform of the machine,
the two coiled springs will be extended according the weight, and the rack pulled
round the pinion which turns the disc, and on the amount of Toll being paid into
the receiving vessel it will move down the guide rod and the index finger will
move at the same time, and will be stopped by the two disc stops meeting each
other, and the index finger will then point out the weight on the dial, and when
the weight is removed from the platform, in the back action, the coiled springs
will return to their normal position, and so forcing all the mechanism to its normal
position by the back action of the two disc stops.
Dated this 12th day of April 1888.

page_text: Improvements in Coin-freed Weighing Machines and Dynamometers.
I HENRY KNIGHT, of The Arcade, Ryde, Isle of Wight in the County of Southampton,
Importer of Italian Sculptures 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 :-
My invention consists of the improvements hereinafter described in the combined
arrangements of mechanism for collecting of Tolls and for controlling the use of the
index finger of a weighing machine, or of a strength testing machine as the case may
be, and by the use of the weight of the coin or coins for this purpose.
The weighing machine mechanism moves first to allow the indicating mechanism to
follow until the rack is stopped by the Tee piece, the same in the case of the Dynamo-
meter machine.
.
The dial is marked in pounds and stones and from one pound to twenty six stone
in a weighing machine-; and in a Dynamometer from one pound to seven hundred
pounds.
The frame of the machine may be plain or ornamental. The dial glass may be square
or round.
My improvement is especially suited to Pooley's, Salters, or other well known
spring balance platform weighing machines and it may also be applied to other
suitably constructed weighing machines and strength testing machines.
My improvements are to prevent the defects caused by the combined use of the coin
in a weighing or strength testing machine. The dial being marked to agree to the
weight on the platform and in combination with the weight of the coin in the receiving
vessel.
According to one of my improvements, I use a wheel with two grooves and I fix
one end of a thin steel band in each groove, but in opposite directions-To the other
end of one band I attach the money receiving vessels, and to the other end of the
second band I attach a counter balance weight.
I use one friction wheel on each side of the groove wheel against the steel band to
keep it in the groove, the wheel being suitably mounted for that purpose.
Instead of using a steel band a strap, cord, chain or the like may be used.
The said wheel is mounted on a spindle, and the same spindle carries a tooth
pinion wheel, the bearings of the spindle are on friction wheels or otherwise. One
end of the spindle projects through the hole in the centre of the dial to which is fixed
the index finger. The pinion is geared to a tooth rack in the following manner.
A short piece of metal bar is pinned at the top end and to the bottom of the rack so
as to form a working joint, and under the bottom of the rack is a coiled spring, to
keep the rack to its work, and against the back of the rack and opposite the pinion, I
use a friction wheel mounted on a plate at the back of the rack to keep it in gearing
with the pinion.
The receiving vessel is kept in a vertical line by two guide rods passing through
loop eyes on the sides of the small frame that carries the receiving vessel. The
two guide rods are fixed to the frame of the machine and strained tight by nut and
thread.
The vessel is made with a flange edge on the top and at the back and is open top
and bottom, and hung up to the frame by pivots close under the flange on which it

page_text: moves when tilted. The frame forms the bottom for the money to rest on, and the
flange answers as a lever, in coming against the movable catch-This small catch is
loosely pinned to a bracket in a slot or otherwise, the catch is rounded at the top edge,
but square on the bottom this catch is for the purpose of ejecting the coin from the
receiving vessel by tilting it when it comes in contact with the flange in its back
action and so moves the receiving vessel off the bottom of the frame, and the money
will fall through into a receiver below.
I provide and fix a guide socket bracket to the frame or casing, and over the
Tee piece, and between the two coiled springs to keep in a vertical line and the short
metal bar and rack attached to it.
The guide socket hole in the bracket may be either round, square, flat or other
shape provided the metal bar is the same shape and fits it nicely so as to allow it to
move freely vertically-but when a round metal bar is used the guide socket bracket
hole is partly slot:ed to allow the two projecting pins that are fixed into the
round bar to move up and down the slot and to prevent the said har from
turning round, the bar is also kept in a vertical line by the socket or a groove
wheel fixed or mounted to the plate or casting so as to act as a guide against the sides
and back of the rack and so to keep it in gearing and in a vertical line and the spring
under the bottom of the first named rack is to keep it in gearing.
In the top and near the centre of the horizontal part of the Tee-piece I fit a screw
with a large flat head the aforesaid guide bracket socket hole will be exactly over the
screw, and the metal bar will touch the screw head when at rest, the purpose of this
screw is to regulate and adjust the rack and pinion, which will adjust the index finger
in front of the dial so also will the screw nut on the bottom of the rack or the screw
collar on the bottom of the guide socket adjust the same, as the pinion is on the
spindle the aforesaid Tee piece is the stop and will stop the rack according to the
distance the weight on the platform of the machine moves it also in the back action
of the coiled springs when the weight is removed from the platform it will force the
metal bar up to its normal position and be stopped by a fixed stop in the plate over the
Tee-piece.
The ordinary method in spring balance platform weighing machines of attaching
the rack to the Tee-piece is dispensed with in my arrangement, it being quite a new
method of using the rack as herein described.
I fix a suitable conducting tube to convey the coin to the receiving vessel-the slot
will be vertical or otherwise.
A penny, halfpence or farthings are taken but the amount in value must be the
same as the toll charge to move the index mechanism, the money may be put into
the slot opening before or while standing on the platform, but I prefer while the weight
is on the platform, but the index cannot move before the person or other weight is on
the platform, the index mechanism is moved by the weight of the money only and will
follow the weighing mechanism and the weight of the body or goods of any kind on
the platform to indicate the same on the dial.
.
The action in a weighing machine will be-on a person standing or placing any
weight on the platform, the weighing mechanism will act, and the springs will be
extended according to the weight thereon, but the indicating mechanism will not act
until the money is paid into the slot opening, and immediately on the money falling
into the receiving vessel, it will move down the guide rods, and so set in motion the
indicating mechanism.
The groove wheel and the counterpoise, the rack and pinion, the metal bar and the
index finger are all sei in motion at the same time by the weight of the money in
the receiving vessel.
The distance of the index movement is regulated by the weight of the body on the
platform by the distance the springs are extended, and the rack is stopped by the metal
bar coming in contact with the head of the adjusting screw in the Tee piece-And on
the weight being removed from the platform, the two coiled springs will return to
their normal position, and so force the weighing and indicating mechanism back to
its normal position..

page_text: By the Tee-piece being under the metal bar it will force up the rack turn the pinion,
and the groove wheel being on the same spindle, the receiving vessel is hereby
drawn up by the steel band, or cord or chain, and the flange of the receiving vessel
thereby comes in contact with a small catch, and so turns the vessel on its pivots
and the bottom from off the frame and the money thereby falls out into a receiver
below.
The action in a Dynamometer may be said to be the same-for the only difference
is a pull to ascertain the strength, instead of the weight of the body on the platform
of a weighing machine.
According to another of my improvements 1 mount a grooved wheel, as before, on
a spindle the said spindle has a pinion wheel and two bearings, one end is in the
casing or plate between the coiled springs and above the Tee piece and in the centre
-the other end has its bearings on friction wheels on a fixed bracket to the casing
close behind the dial-the end of the spindle coming sufficiently through the hole
in the centre of the dial-and on this end is fixed the indicating finger in front
of the dial-The tooth rack works in a guide, flat hollow case or socket and is
thereby kept geared to the pinion wheel. The lower end of the rack is over the Tee-
piece and is formed in one flat piece of metal. The said rack will rest on the
horizontal part of the Tee-piece, when at its normal position the Tee-piece acts as a
stop; over the top end of the rack I use the adjustable screw arrangement in com-
bination with the sliding adjustable weight attached to the long arm of the compound
levers under the platform it answers the same purpose as the screw in the Tee-piece,
if the said weight is moved forward the arm is depressed if moved backwards the reverse
is the case.
The groove wheel has a cord or strap, one end of which is fixed to the wheel and in
the groove, and after one turn of the cord round the wheel, the counter balance
weight is attached to the other end, for the purpose of balancing the receiving vessel,
and the weight is enclosed in a tube to keep it in position.
The tripping catch and guide rods are the same as used in the first arrangement
and several of the catches may be used in either of the arrangements, one being placed
being the other, and it is desirable to prevent a second person or other things, being
weighed for the same payment-the money is ejected from the receiving vessel by
the flange coming in contact with the first catch in the back action.
The action will be the same on the money being paid, as in the first described
arrangement, into the receiving vessel, it will partly retake the grooved wheel and
overbalance the balance weight. As soon as the weight of the body is put on the
platform the coiled springs will be extended and the rack will move downwards an
will be stopped by the Tee-piece and the indicating finger having moved at the sam
time will then point out the weight on the dial-And on the weight being removed
from the platform all the mechanism will resume its normal position. The money
is removed from the receiving vessel in the same way as described in my first
arrangement.
The following may be substituted for the two guide rods if desirable. A tube
with a long slot, and a short piece of smaller size tube with a projecting arm at
right angles, the arm coming or extending through the slot, the receiving vessel is
fixed to this arm and a steel band is attached to the small tube, it will move up and
down the large tube freely, and act as a guide in the place of the guide rods. The
tube is fixed vertically.
According to another of my improvements I use the same coin-freed combination
herein before described to a weighing machine with the usual platform for weighing
goods or other things suitable for a market or other places.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawings-
Fig. 1 is a front elevation of the upper portion of a weighing machine constructed
according to my improvement with, the, dial removed so as to show the mechanism
more clearly.
On a neatiotaloussition
;

page_text: Figs, and are enlarged details of the receiving vessel, guide rods, catch c
Figs. 5 and 6 are enlarged details of the rack, pinion, friction wheel, socket &c.
Fig. 7 is an elevation of rack and metal rod as shown in Figs. 5 and 6.
Fig. 8 is an enlarged detail of another kind of rack.
Fig. 9 is a side view of part of same.
Figs. 10 and 11 are enlarged details of another kind of rack.
Figs. 12 and 13 are details showing friction wheels required for grooved wheel
when steel bands are used. Similar letters in all the Figures represent similar
parts.
.
I will first describe my improvements by reference to Figs. 1 to 7. a is the frame
or casing of the machine are the coiled springs which are suspended from the
lugs by hooks b' b¹ which are provided with nuts and threads so as to allow of their
being adjusted to the greatest nicety, c is the grooved wheel to which are attached
the chains s (straps, steel bands, cords &c whichever are used) that have the receiving
vessel o and balance weights attached to them, d is the rack, d² is the metal bar
attached to the bottom of rack d and working in the socket h¹, e is the spindle and
pinion, the spindle passes through the dial and to that end the index finger is attached,
fis the grooved friction wheel at back of rack d to keep it up to its work and to keep
it from turning. f¹is bracket for attaching same to plate h, and plate his fixed to a
boss at back of casing a by means of screws uu, g is a plate or bracket to carry the
end of spindle e and is fixed, to the casing a by screws. i is a screwed collar which by
being screwed or unscrewed will adjust the rack d and metal bar d² and pinion e and
consequently the index finger of the dial, is the Tee-piece suspended from the coiled
springs b, d¹ is a square headed screw tapped into the top of Tee-piece j for metal
bar d² to rest against and also for adjusting rack, pinion &c., is a coupling piece
attached to Tee-piece j by bolt and nut, is the rod connecting the mechanism of
platform a¹ to the coiled springs b, m is the shoot to carry the money into the receiving
vessel o, n is the frame carrying the receiving vessel o, n¹ is the spindle on which the
receiving vessel inoves in tipping out the money, o' is a flange at back of receiving
vessel o, p is the bracket for carrying the catch said bracket p being moveable so
as to allow of being placed anywhere in the rod ; rare brackets to which the
guide rods and the rod ² (carrying the catch q) are fixed, The drawings only
show one catch q but there may be any number of them placed at any distance on
the rod, ss are the chains fixed in the two grooves of the grooved wheel c one end
of each chain is fastened to the grooved wheel cone in each groove but in opposite
directions, when the machine is at rest the chain attached to the receiving vessel o is
wound round the grooved wheel c; t t are the compound levers of the usual mechanism
employed in platform weighing machines, v v are small coiled springs to act as buffers
to check the recoil of the receiving vessel o...ww are wheels on which machine is
mounted, are set screws for setting machine level; a¹ is the platform, a² is the
fender to prevent more than one person from stepping on the machine at once, a³ is
a door in frame a for taking out money..
When a person places himself (or a body to be weighed) on the platform a¹ the
compound levers will pull down the rod and Tee-piece ; so extending the springs to
a distance corresponding with the weight on the platform. When the money is placed
in the shoot m it passes into the receiving vessel o and the said vessel o immediately
descends causing the grooved wheel cand the spindle and pinion e to rotate
so causing the rack d and metal bar & to descend through socket until the end of
the metal bar d² rest on the head of screw d¹ on the Tee-piece, when the weight of
the body or person on the platform will be indicated on the dial. As the receiving
vessel descends the catch. q tilts up and allows the flange o¹ to pass. When the
weight is taken off the platform a¹ the springs 6 contract and the Tee-piece ; pushes
up the metal bar d² and rack d so causing the mechanism to resume its normal
position. As the receiving vessel o rises the flange o' comes in contact with the
catch q which is now rigid and so causes the receiving vessel o to tip as shown by
dotted lines in Fig. 3 and so release the money.
L
In Figs. 8 and 9 I show the rack d cranked and jointed into metal rod. d².the rack

page_text: is
being kept up to its work by means of a small friction wheel fixed to the casing
in slot so as to allow of its being adjusted, is the spindle of friction wheel
a small cotter to fix wheel, i is the nut for adjusting metal bar d² rack & pinion &c.
The metal bar d in this method works in a slotted socket and has guide pins d' to
keep it from turning. Another method is not drawn as the only difference from
that in Figs. 8 and 9 is that the metal bar is square and the socket is square so
doing away with guide pins d'.
Figs. 10 and 11 show another method. The socket h³ is very short at bottom as is
also metal bar d but the socket is continued right up over the rack but flat and a
portion cut away for pinion.
In Figs. 12 and 13. c is the grooved wheel, e the spindle and pinion, f small
friction wheels to keep steel bands in their places, the spindle of friction
wheels ffff are slots to allow of the friction wheels ff being adjusted.
Fig. 12 shows additional friction wheels f³, mounted on plate g, e is the spindle
bearing on the said wheels.
Fig. 14 is a front elevation of a flat rack, guide sockets and pinion connected to
a plate.
Fig. 15 is a side elevation.
I will describe another modification, of my improvements by reference to Figs. 14
and 15. hh is a fixing plate, are two guide sockets to keep the rack d, in
gearing with the pinion e, d is a regulating screw over the rack to adjust the index
finger.
Fig. 16 is a front elevation of a slotted Tee-piece, a a is the casing, d¹ is a
regulating screw to adjust the index finger which comes under the rack d, j is a
Tee-piece, is a slot to allow it to move, is a stop pin in the slot, j³ is a hole to
hook the rod into, is a connecting rod the lower end of which is hooked to the
long arm of the compound levers under the platform.
In constructing a Dynamometer (although I have not shown separate Drawings) it
will be understood I fix two convenient pull handles to the frame of a weighing
machine so that the weight and strength may he had for one payment; or the
hereinbefore described indicating mechanism may be applied and used to any suitably
constructed 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. The combination and arrangement of mechanism hereinbefore described and
represented in Figs. 1 to 6 or with either of their modifications in Figs. 7 to 15 of the
accompanying Drawings.
2. The combination and arrangement of the indicating_mechanism hereinbefore
described and shown in the accompanying Drawings with a Dynamometer.
3. The receiving vessel o, and its frame n, and the guide rods 1; the method of
using the rack d, for indicating purposes and the regulating screws d' guide sockets h¹
and metal rod d³, screw collar moveable catchy, grooved friction wheel f, applied as
herein before described and shown in the accompanying Drawings.
Dated this Ninth day of January 1889.
HENRY KNIGHT.