Improvements in Automatic Scale Weighing Machines.
Year: 1893

page_text: Date of Application, 13th Nov., 1893
Complete Specification Left, 16th July, 1894-Accepted, 10th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Automatic Scale Weighing Machines.
I, CHARLES RICHARD GORRINGE 4 Hornsey Rise Gardens London N.
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to machines for automatically weighing out predetermined
quantities of a substance such as tea, sugar and the like, which is supplied from a
hopper and the same is carried out as follows.
1 provide a hopper from which the substance is conveyed to the shoots by means
of worm feeders or conveyers. I find it most convenient to employ two shoots,
one larger than the other. These shoots are closed when required by doors or
flaps.
The larger door or flap is kept open by means of a spring or counterpoise.
Attached to the spindle carrying the larger door or flap is a small disk having a
notch or indentation in same, a rocking pawl is prevented, by a bearing surface
operated by a lever in connection with the scale pan, from engaging with this.
notch or indentation until the scale pan falls, when the rocking pawl engages in the
notch and forcing round the disk closes the larger door or flap, a retaining pawl
entering a notch or indentation on a second disk attached to the said spindle and
keeping the door or flap in its closed position. The doors or flaps have if desired
indiarubber edges.
The scale pan is pivotally carried by or suspended to the scale, or arm thereof
& is prevented from tipping or tilting, until the desired amount of substance has
entered the same, by a small catch piece attached to the support carrying the scale
pan, & which is released from holding the scale pan by one end of said catch
coming into contact,-when the support carrying said scale pan falls or descends-
with a small rotating wheel attached to a suitable support, having a serrated edge
or periphery formed of indiarubber or such suitable material, the scale pan then
tilts owing to the weight of material or substance in the same & by means of
suitable levers attached or connected thereto closes the smaller door or flap & at
the same time the substance is deposited in the bag or other receptacle, the pau
being so weighted or balanced as to return to its initial position at the same time
allowing the smaller door or flap to open, the catch piece again securing said scale
pan. The catch piece is controlled by a spring or counterpoise. The rotating
wheel, rocking pawl and worm feeders or conveyers are actuated by any suitable
power. When the scale pan rises the retaining pawl is released from the notch or
indentation in the second disk by means of a lever in connection with the scale pan
& the larger door is thus opened.
When the desired amount of substance has entered the scale pan the same falls
thus cutting off the supply from the larger shoot, the smaller shoot now gives the
final delivery of the substance and is in turn closed by the tilting of the scale pan.
The substance being finally deposited in the bag or receptacle and so on.
Dated this 13th day of November 1893.
E. EATON,
Agent for Applicant.

page_text: Improvements in Automatic Scale Weighing Machines.
1, CHARLES RICHARD GORRINGE 4 Hornsey Rise Gardens London N.
Gentleman, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This invention relates to automatic scale weighing machines and aims to provide
a machine or scale which will weigh a predetermined quantity of substance such as
tea sugar and the like which is supplied from a hopper, and the same is carried out
as follows.
I provide a hopper from which the substance is conveyed to the shoots by means
of worm feeders or conveyers. I find it most convenient to employ two shoots one
larger than the other. These shoots are closed when required by doors or flaps.
The larger door or flap is kept open by means of a spring or counterpoise.
Attached to the spindle carrying the larger door or flap is a small disk having a
notch or indentation in same, a rocking pawl is prevented, by a bearing surface
operated by a lever in connection with the scale pan from engaging with the notch
or indentation until the scale pan falls, when the rocking pawl engages in the notch
and forcing round the disk closes the larger door or flap, a retaining pawl entering
a notch or indentation on a second disk attached to the said spindle and keeping the
door or flap in its closed position. The doors or flaps have if desired indiarubber
edges.
The scale pan is held in position by a small catch piece which is released by
coming into contact, when the scale pan falls, with a small rotating wheel having a
serrated edge or periphery formed of indiarubber or such suitable material, the
scale pan then tilts and by means of suitable levers closes the smaller door or flap
and at the same time the substance
deposited in the bag or other receptacle, the
pan being so weighted as to return to its initial position, at the same time allowing
the smaller door or flap to open, the catch piece again securing said scale pan.
The catch piece is secured by a spring or counterpoise. The rotating wheel,
rocking pawl and worm feeders or conveyors are actuated by any suitable power.
When the scale pan rises, the retaining pawl is released from the notch or
indentation in the second disk by means of a lever in connection with the scale pan
and the larger door is thus opened. When the desired amount of substance has
entered the scale pan the same falls thus cutting off the supply from the larger
shoot, the smaller shoot now gives the final delivery of the substance and is in
turn closed by, the tilting of the scale pan. The substance being finally deposited
in the bag or receptacle and so on.
Referring to the annexed drawings
-
Figure is a side elevation partly in section of a scale weighing machine
constructed according to my invention.
Figure 2. front elevation to enlarged scale showing my arrangement of shutter.
Figure 3. enlarged view of notched or slotted wheel for closing shutter.
Figure 4. detached view of clip mechanism for releasing the tilting scale pan.
Figure 5. side elevation of a modified forin of release of the scale pan.
Figure 5 plan view of same.
Figure 6. end elevation of same.
Figure 7. side elevation of a modified arrangement for closing the shoots.
Figure 8 further modified arrangement for closing the shoots in side elevation.
Referring to Figure 1 a is the hopper containing the substance to be weighed
which is conveyed to the chutes & c by means of worm feeders d. The feeder
may consist of a helical spring or spiral which is rotated by being connected to the
motive power by the pulley e and strap or belt f. 1 find it most convenient to

page_text: employ two chutes b and c, the one being larger than the other. The larger chute bis
closed by a shutter 9 carried upon and moved by the spindle h. To this spindle /
are attached two wheels or discs i and j. The arm k carrying the pawl is pivoted
at m to the spindle and pivotally attached to the crank pin o on the wheel p..
When the wheel p is rotated the arm k carrying the pawl is caused to move
backwards and forwards, but the pawl is prevented from engaging in a notch q in
the disc or wheel i by bearing on the slotted plate q' which rests upon the lever r
which is pivoted at g' to the frame work of the machine. The lever is attached
at s to the frame t to which the scale pan u is pivoted at . The pawl w is pivoted
at to the chute 6 or framework. The scale pan u is weighted or balanced so as to
return to its initial position after the substance has been delivered from same.
The action is as follows. When the desired amount of substance has entered the
scale pan u so as to counterbalance the weight y, the scale pan u descends and the
slotted plate gl falls and allows the pawl h to engage on the slotted wheel i and
thus close the shutter y. A pawl w enters a slot, on the second dise or wheel j.
The final amount of substance is now delivered froin the smaller chute c until the
descent of the scale pan u brings the end of catch piece 1 in contact with the small
rotating wheel 2 having an indiarubber serrated edge which moves the catch piece 1
and releases the scale pan u, which now tilts and in doing so closes the smaller
shutter 2, through the lever 10 and is connected by an elastic band or spring 3 to
the pivoted lever or rod 4 which is raised by the bent arm 5 carrying a small
friction roller 6, said bent arm being secured to the scale pan at 7. The lever 4.
bas a weight or ball 8 which travels along same and by its position regulates the
release of the scale owing to the weight exerted by same on the arm of the scale
pan u and so alters the time of release of same. The catch piece 1 which holds
the scale pan u in position may be controlled by a small spring or such like 9. If
desired the catch piece 1 may have an arm 11 which is shown in dotted lines and
which comes in contact with the stop piece 12 and so releases the catch piece 1..
The substance when the scale pan tilts is deposited into the chute 13 and the scale
pan u returns to its initial position and as it rises, opens the shutters g and by the
lever which releases the pawl w from the slotted wheel j. A spring 14 or its
equivalent may be employed to open the shutter g. The edges 15 of the shutter g
and 2 have indiarubber or flexible edges. The small serrated wheel 2 which moves
the end of the catch piece I is revolved by the band 16 also the wheel e and feeder d
by any suitable motive power. The pawls and to may be controlled by springs,
if desired. The catch piece 1 has an inclined surface 17 to allow the scale pau u
to return to its initial position.
Referring to Figure 5 & 6. 20 is a lever pivoted at 48 to the support carrying
the pan u.
This lever 20 has an inclined projection 21 on same which catches the
end of the stop piece 22 attached to the scale pan u. The rod 23 is in connection
with the lever 20 through the medium of plate 24 projecting from same, at one
end, and is pivoted at, or rests on a suitable support 25. It will be seen that as the
scale pan u descends the end 26 of the lever 23 comes into contact with the
plate 24 and in so doing releases the stop piece on the scale pan by depressing
the lever 20. This lever is normally kept in its raised position by the spring 27;
thus the scale pan u is in its locked position every time it returns to its initial
position.
Referring to Figure 7. In this modification the forked lever 28 is pivoted at 29
to the sides of the chute and is connected at 30, to the rod 31, which is pivotted
at 32, and has a counterpoise 33. 34 is an inclined plane attached to the scale
pan u which operates on the lever or rod 35, through the medium of the friction
wheel 36. 37 is a disk attached to the spindle h and owing to the spring 38, has
a tendency to turn in the direction of the arrow 1 & so close the shoot. The inside
edges of the lever 28, have projections 39 & 40 which enter slots in the disk 37.
When the scale pan u falls the rod or lever 31, falls & causes the disc 37, to be
free to rotate which it does through the action of the spring 38, & so closes the
shoot b. The shoot is opened again by the scale pan rising & the inclined plane on

page_text: same coming in contact with the small wheel 36 on the rod or lever 35, the
projections 39 & 40 on the forked lever, entering notchs in the disc 37. 41, is a
rod attached to the scale pan u for operating said rod 31.
Referring to Figure 8. in this case instead of the forked lever 28, I employ a
straight lever 42, which has a projection 43, on same which engages in a notch or
slot in the disk 44. The shutter 45, is closed by the spring 46.
Having now particularly described and ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim & desire to secure is.
1. The combined construction and arrangement of the various parts substantially
as described.
2. In automatic scale weighing machines in combination a tilting scale pan, a
catch piece for releasing and holding said scale pan, a rotating serrated wheel or
stop piece for releasing said catch piece when the scale pan descends, a large chute,
a door or shutter closing said chute through the medium of a rocking pawl or
lever, which is operated by an eccentric, said pawl or lever acting upon a ratchet
or notched wheel attached to the spindle carrying the larger shutter, a disc or
bearing surface actuated by a lever attached to the scale pan and which allows the
rocking pawl to come into contact with the ratchet wheel when the scale pan
descends, a slotted disc attached to the spindle carrying said shutter, a pawl
engaging in same when in its closed position, a smaller chute closed by a door or
shutter to which is attached a lever connected to a pivoted arm by an elastic cord
or spring upon one end of which a weight or counterpoise travels, a rod attached
to said scale pan & closing the smaller chute by engaging with the pivoted lever
when the scale pan tilts, flexible edges attached to said shutters, a hopper containing
the substance which is fed to the chutes a feeder or worm formed of a bent blade
or helical spring and feeding the substance down the said chutes, a guide for the
reception of the substance from the scale pan, a pawl for maintaining the larger
shutter in its closed position by engaging in a ratchet wheel, or notched disc, a
lever operating said pawl and carried by the scale for releasing said pawl from the
ratchet wheel or notched disc, when the scale pan returns to its initial position.
Dated this 17th day of July 1894.
E. EATON,
Agent for Applicant.