Improvements in Machinery or Apparatus for Weighing, and Marking Articles Weighed.
Year: 1887

page_text: Date of Application, 23rd Dec., 1887
Complete Specification Left, 18th Sept., 1888
Complete Specification Accepted, 26th Oct., 1888
Improvements in Machinery or Apparatus for Weighing, and
Marking Articles Weighed.
1, WILLIAM SNELGROVE, of West View, Dulwich Grove, in the County of Surrey,
Engineer, do hereby declare the nature of this invention to be as follows:-
In the specification of a former application for Letters Patent in the names of
Ellis Carr and William Snelgrove dated 21st February 1887, No. 2692, there is
described apparatus whereby articles such as tins containing biscuits (or other articles)
can be weighed and correspondingly marked in an automatic manner, that is to say,
without its being necessary for any person to learn the weight of the article before it
is marked or printed thereon. Now the present invention has reference to machinery
having a like object, and which in parts is constructed according to the former invention
above referred to.
According to the present invention angular movement of the scale pan or plate
(hereinafter called the scale pan) is obviated; an arrangement of toggle levers is
provided whereby the scale pan can be held in position to receive an article to be
weighed can be lowered so as to be supported with its load upon the weighing
mechanism; and subsequently can be raised with the weighed article into position
for marking or printing the latter. The mechanism for operating the toggle levers
may be so arranged as to be adjustable to adapt the machine for the marking or
printing of articles of different sizes. For the same purpose the stamps or types
instead of being rigidly secured in the type wheel, disc, or equivalent, are or may be
furnished with springs in opposition to which they can be moved inward or caused to
recede by an article that is being marked or printed upon. The type wheel, disc, or
equivalent is operated by mechanism the action of which is independent of the weight
of the article being weighed. The type wheel, disc or equivalent is provided with
projections or stops in connection with which a lever carried by a spindle mounted in
anti-frictional bearings is provided, such lever being so operated as to arrest the type
wheel, disc, or equivalent with the proper recording stamp or type opposite the
weighed article to be marked. Means are provided to prevent recoil of the type wheel,
disc or equivalent when arrested. For placing articles upon the scale pan, an endless
travelling band and a pusher are provided.

page_text: Machines may be constructed in various forms in accordance with this invention.
An arrangement of such a machine is shown by way of illustration in the annexed
three sheets of drawings, whereof
Fig. 1 is a side elevation and
Fig. 2 a plan or top view of the machine.
Fig. 3 is a longitudinal vertical section in the line A. B. Fig. 2.
Fig. 4 is a transverse section in the line C. D. Fig. 1.
Figs. 5 to 10 are detail views hereinafter referred to.
1 is a scale pan provided at its under side with recessed lugs 2; it is arranged
directly above but so as normally to be out of contact with a plate 3 (Fig. 5) that is
carried by a vertical rod 5 supported by the weighing mechanism or spring balance 4.
The lower portion of this rod works through a hole in a transverse bearer 6 and
between antifriction rollers 7, its upward motion being limited by a collar 8. 9 is a
plate provided with projections 10 adapted to enter the lugs 2 and carry the scale pan
at certain periods in the operation of the machine. The plate 9 is carried by two pairs
of rods 11 which work through guides 12. Each pair of these rods is connected at
the lower end to a saddle bar 13. To cach saddle bar 13 is jointed the lower end of
one of a pair of toggle levers 14, 142, the upper end of each lever 14 being jointed
to a fixed bracket 15. Motion is imparted from a driving shaft 16 to the toggle.levers
and through them to the saddle bars 13, rods 11, and plate 9, by spur wheels 17 and 18,
wheels 19 and 20, crank shaft 21, connecting rod 22, and connected side rods 23.
The wheel 19 has a part 19* of its periphery plain, and the wheel 20 has a corresponding
plain concave portion 20* of smaller diameter than the part 19* of the wheel 19.
The arrangement of these wheels is such that during removal from the scale pan of an
article already weighed and marked and the placing on the scale pan of another
article to be weighed and marked, the plain part. 19* of wheel 19 will be sliding
past the plain part 20* of wheel 20 so that the wheels will not be transmitting motion
to the crank shaft 21. During this time the scale pan 1 will be supported
independently of the weighing mechanism by the projections 10. 24 is a pin and 25
a bar or plate fixed to corresponding sides of the wheels 19 and 20 respectively; they
are so relatively arranged that as the wheel 19 rotates the pin 24 will come into
contact with the bar or plate 25 and thereby ensure that the two wheels shall again
come into gear after their plain parts 19" 20" have passed one another. 26 is an
endless hand or apron for conveying articles to be weighed, such for example as tins
of biscuits, to a stationary table 27 this band is driven by a drum 28 that receives
motion from the crank shaft 21 by means of a sprocket wheel 29 fixed to the said
shaft, pitch chain 30, and a sprocket wheel 31 fixed to the transverse shaft 32 to
which the drum 28 is also fixed. 33, 33 are rollers and 34 is a drum for supporting
the hand or apron; they are carried by side frames 35 secured at one end to the main
frame 36 of the machine and carried at the other end by a standard 37. 38, 38 are
guide bars. carried by the side frames 35; they aid in retaining upon the band or
apron 26 articles to be weighed and in guiding such articles whilst they are passing
to the table 27. As the band or apron is driven by the crank shaft, its movement
ceases when rotation of that shaft is arrested as hereinbefore described.
39 is a pusher for transferring articles from the table 27 to the scale pan 1: an
article whilst being so moved pushes from the scale pan a previously weighed and
marked article that may be thereon. The pusher is arranged to side transversely
over the table 27 which is formed with a slot 27" for the passage of a rib or flange 40
secured to the underside of the pusher. 41, 41 are anti-friction rollers mounted upon
the pusher so as to project slightly beyond one of its sides; they have for object to
enable the pusher to readily move past any article on the band or apron that might
otherwise impede the action of the pusher or be itself damaged by the pusher. 42 is
a lever for operating the pusher; it is pivotted at 43 to a bracket 44 secured to one of
the side frames 36 and is connected at its upper end to the rib or flange 40 by a pin
that works within a slot 45 formed in the rib or flange, and at its lower end by links 46
to a rod 47 arranged to slide in guides 47. Motion in one direction is imparted
to the rod 47 by a lever 48 pivotted at 49 and operated by a cam 50 on a plate 51
'

page_text: secured to the segmental wheel 19. 52 is a spring for imparting motion in the
opposite direction to the rod 47; it is secured at one end to the rod 47 and at the
other end to one of the side frames 36. 53 is a case fixed to the table 27 and
containing a spring buffer against the head 54 of which a shoulder 39 (Fig. 2) on
the pusher acts when the latter has nearly completed its outward stroke under the
action of the spring 52; the pusher is thus cushioned and brought to rest without
shock. 55 is a lever pivotted to the table 27; it is connected at one end to a spring 56
that causes it normally to assume the attitude shown in Fig. 2, in which attitude
its free end acts as a safety stop to prevent movement of the pusher until the article
to be weighed and marked has been completely placed upon the table. The act of
effecting this will cause tho bar (by reason of the article being pushed against it) to
assume the position indicated by dotted lines, in which position it will leave the pusher
free to act.
Thus crushing of an article by the pusher which might occur if it were partly on
the band or apron 26 and partly on the table 27 is prevented.
The safety stop is designed to come into action to arrest the pusher only in the
event of neglect on the part of an attendant to always keep at least two articles such
as tins of biscuit on the band or apron.
Whilst there are not less than two articles on the band or apron, the forward one will
be forced into proper position on the table 27 by the article or articles behind it.
The tension of the driving belt is such that when the pusher is arrested such bell
will slip on its pulley and thus prevent breakage of any part of the apparatus.
58 is a table having an inclined part on to which an article, after being weighed and
marked, is pushed by a succeeding article; it is provided with anti-friction rollers 59
which enable an article to readily slide down on to a support or table, part of which
is shown in dotted lines at 60, or it may be on to a travelling band which may carry
the article to any desired place.
61 is a type wheel or disc fixed to a shaft 62 mounted to rotate in bearings carried
by standards 63 secured to the main framing 36. 64 is a pulley secured to one end
of the shaft 62. 65 is a driving cord or gut for rotating the pulley 64 and type wheel
or disc 61 in one direction; it is wound upon and secured at one end to the pulley 64, from
which it passes partly around a guide pulley 66 carried by onearm of a bell crank lever 67,
thence partly around a second guide pulley 68 mounted in a bridge piece 69 carried
by the table 27, and the other end of cord or gut 65 is secured to the front portion of
the pusher 39 as shown in Figs. 2 and 4, and by which it is operated. 70 is a brake
drum secured to the shaft 62 and provided with a brake strap 71, one end of which is
secured to pin 72 fixed to the adjacent standard 63. The other end of the brake strap
is secured to the weighted arm 73 of a bell crank lever which is loosely mounted upon
a fixed rod 74 and has its other arm 75 extending downward sufficiently far to be
operated by the raised forward part of the pusher just before this reaches the end of
its outward or return stroke. When the arm 75 is thus operated, the brake drum is
relieved from the friction of its strap. 76 is a spring secured at one end to the table 27
and at its other end to the short arm of the bell crank lever 67; by it the long
arm of this bell crank lever is enabled to take up slackness in the cord 65. 77 is a
projecting bar secured to the bridge piece 69; it serves to limit the movement of the
long arm of the bell crank lever 67 to the left.
78 is a flexible connector secured at one end to a pulley 79 fixed to the shaft 62,
and at its other end to a weight arranged to move vertically in a cylinder 80 and
which in falling, when the brake drum 70 is relieved of the friction of its strap,
rotates the shaft 62 and type wheel or disc in an opposite direction to that in which
it is turned by the cord 65 until it is arrested by a lever 81 as will hereinafter be
described. 82 is a guide pulley for the connector 78. The cylinder 80 may be partly
filled with water and act as a dash pot.
To adapt the type wheel or disc for marking or printing goods the dimensions of
which vary slightly in height, the parts 83 at the ends of which type (preferably of
india-rubber) are carried are each mounted with their inner ends within a case or
chamber 84 (Fig. 10) which is secured to one side of the disc and encloses a spring 85

page_text: that normally forces the corresponding part 83 outward as shown, but which will
nevertheless yield slightly when an article that has been weighed is being marked.
Each part 83 is provided with a pin 86 that projects through slots in its container 84
and serves to limit the outward movement of the part 83.
87, 87, are stops or projections by contact with which the lever 81 arrests the
motion of the type wheel or disc caused by the falling of the weight in the cylinder 80.
They are secured to one face of the type wheel or disc as shown. 87, 87", are
distance pieces of suitable material such as wood between the stops or projections 87.
89 is a rod connected to the lever 88 and extending through a projection 1ª of the
scale pan 1; it is provided with an adjustable nut 898 and is operated, for determining
the position of the lever 81, in a similar manner to that described in the former
specification herein before referred to. The lever 81 is fixed to a spindle mounted
between anti-friction wheels 90; its outer end. is weighted and may be provided with
a piston preferably of a form resembling two perforated saucers placed with the under
part of one opposite that of the other and arranged to work in a vessel containing fluid
such as water. By this arrangement motion of the lever 81 is made steady and
vibration thereof damped. 91 is a flexible strip secured at one end to the cross bar
that carries the lever 81. It extends below the types and is perforated so as to be
forced over the lowest type by an article when it is raised to be marked. The strip
serves to prevent such article being marked by the types adjacent to the lowest one.
To prevent recoil of the type wheel or disc when its motion is arrested by the
lever 81, a ratchet wheel 92 is fixed to its shaft, and into it takes a pawl 92 when
the motion of the type wheel or disc is arrested. The pawl is pivotted to one of the
standards and is provided with an extension 93. 94 is a spring that presses the pawl
upon the ratchet wheel when the type or wheel or disc is being rotated under the
action of the weight in the cylinder 80. When the type wheel or disc is rotated in
the opposite direction, by the cord 65, the, pawl is raised clear of the ratchet wheel 91
by a bar 95 which depresses the extension 93 of the pawl. This bar 95 is connected
to one arm of a lever 96 pivotted to one of the side frames 36 and actuated by a
cam 97 on the crank shaft.
98 is an inking roller for the types.
99 is a spring stop; it is arranged to come into contact with a pin 100 on the type
wheel or disc and prevent the same being rotated too far by the driving cord.
It will be obvious that the details of the machine may be variously modified.
Thus in some cases a pendulum balance may be used in lieu of a spring balance.
The lever S1 instead of being arranged to abut against the projections 87 may be
made of hook form to engage with projections that should be, then correspondingly
modified in form. In some cases the shaft 62 may be provided with a pinion to
which motion can be imparted in opposite directions by a rack or toothed plate.
This rack or toothed plate may be formed with a series of steps, one or other of which,
according to the weight of the article weighed, will come into contact with a bar or
stop, the position of which is determined by the scale pan. The toggle levers may in
some cases be operated by a crank, the throw of which can be adjusted, to adapt the
machine to weigh and mark articles of various sizes. In a modified form of machine,
the toggle levers may be arranged to be operated by a hand lever, the extent of
movement of which can be regulated according to requirement.
Dated this 23rd day of December 1887
W. LLOYD WISE,
Per F. J. Brougham,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Weighing and Marking
Articles Weighed.
I, WILLIAM SNELGROVE, of West View, Dulwich Grove, in the Coun'y of Surrey,
Engineer, do hereby declare the nature of this invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
In the Specification of a former Application for Letters Patent in the names of
Ellis Carr and William Snelgrove dated 21st February 1887 No. 2692 there is
described apparatus whereby articles such as tins containing biscuits (or other articles)
can be weighed and correspondingly marked in an automatic manner, that is to say,
without its being necessary for any person to learn the weight of the article before
it is marked or printed thereon. Now the present invention has reference to machinery
having a like object and which in parts is constructed according to the former
invention above referred to.
According to the present invention angular movement of the scale pan or scale plate
(hereinafter called the scale pan) is obviated; an arrangement of toggles is provided
whereby the scale pan can be held in position to receive an article to be weighed ;
can be lowered so as to be supported with its load upon the weighing mechanism;
and subsequently can be raised with the weighed article into position for marking or
printing the latter. The mechanism for operating the toggles may be so arranged
as to be adjustable to adapt the machine for the marking or printing of articles of
different sizes. For the same purpose the stamps or types instead of being rigidly
secured in the type wheel, disc, or equivalent, are or may be furnished with springs
in opposition to which they can be moved inward or caused to recede by an article
that is being marked or printed upon. The type wheel, disc, or equivalent is operated
by mechanism the action of which is independent of the weight of the article being
weighed. The type wheel, disc, or equivalent is provided with projections or stops,
in connection with which a lever carried by a spindle mounted in anti-frictional
bearings is provided, such lever being so operated as to arrest the type wheel, discs,
or equivalent with the proper recording stainp or type opposite the weighed article
to be marked. Means are provided to prevent recoil of the type wheel, dise, or equiva-
lent when arrested. For placing articles upon the scale pan, an endless travelling
band and a pusher are provided.
Machines may be constructed in various forms in accordance with this invention.
An arrangement of such a machine is shown by way of illustration in the three
sheets of drawings filed with my Provisional Specification and in which
Fig. 1 is a side elevation and
Fig. 2 a plan or top view of the machine.
Fig. 3 is a longitudinal vertical section in the line A. B. Fig. 2.
T

page_text: 1 is a scale pan provided at its under side with recessed lugs 2; it is arranged
directly above but so as normally to be out of contact with a plate 3 (Fig. 5) that
is carried by a vertically moving rod 5 supported by the weighing mechanism or
spring balance 4. The lower portion of this rod works through a hole in a trans-
verse bearer 6 and between anti-friction, rollers 7, its upward motion being limited by
a collar 8. 9 is a plate provided with projections 10 adapted to enter the lugs 2 and
.carry the scale pan at certain periods in the operation of the machine. The plate 9
is carried by two pairs of rods 11 which work through guides 12. Each pair of
these rods is connected at the lower end to a saddle bar 13. To each saddle bar 13 is
jointed the lower end of one of a pair of toggle bars 14, 142, the upper end of each
bar 14" being jointed to a fixed bracket 15. Motion is imparted from a driving
shaft 16 to the toggle bars and through them to the saddle bars 13, rods 11, and
plate 9, by spur wheels 17 and 18, wheels 19 and 20, crank shaft 21, connecting
rod 22, and connected side rods 23. The wheel 19 has a part 19* of its periphery
plain, and the wheel 20 has a corresponding plain concave portion 20* of smaller
length than the part 19* of the wheel 19. The arrangement of these wheels is such
that during removal from the scale pan of an article already weighed and marked and
the placing on the scale pan of another article to be weighed and marked, the plain
part 19* of wheel 19 will be sliding past the plain part 20* of wheel 20 so that the
wheels will not be transmitting motion to the crank shaft 21. During this time
the span 1 will be supported independently of the weighing mechanism by the
projections 10. 24 is a pin and 25 a bar or plate fixed to corresponding sides of the
wheels 19 and 20 respectively; they are so relatively arranged that as the wheel 19
rotates the pin 24 will come into contact with the bar or plate 25 and thereby ensure
that the two wheels shall again come into gear after their plain parts 19* 20* have
passed one another. 26 is an endless band or apron for conveying articles to be
weighed, such for example as tins of biscuits, to a stationary table 27; this band is
driven by a drum 28 that receives motion from the crank shaft 21 by means of a
sprocket wheel 29 fixed to the said shaft, pitch chain 30, and a sprocket wheel 31
fixed to, the transverse shaft 32 to which the drum 28 is also fixed. 33, 33 are
rollers and 34 is a drum for supporting the band or apron; they are carried by side
frames 35 secured at one end to the main frame 36 of the machine and carried at the
other end by a standard 37. 38, 38 are guide bars carried by the side frames 35 ;
they aid in retaining upon the band or apron 26 articles to be weighed and in guiding
such articles whilst they are passing to the table 27.
As the band or apron IS
driven by the crank shaft its movement ceases when rotation of that shaft is arrested
as hereinbefore described.
39 is a pusher for transferring articles from the table 27 to the scale pan 1; an
article whilst being so moved pushes from the scale pan a previously weighed and
marked article that may be thereon. The pusher is arranged to slide transversely
over the table 27 which is formed with a slot 27" for the passage of a rib or flange 40
secured to the underside of the pusher. 41, 41 are anti-friction rollers mounted upon
the pusher so as to project slightly beyond one of its sides; they have for object to
enable the pusher to readily move past any article on the band or apron that might
otherwise impede the action of the pusher or be itself damaged by the pusher. 42 is
a lever for operating the pusher; it is pivotted at 43 to a bracket 44 secured to one
of the side frames 36 and is connected at its upper end to the rib or flange 40 by a
pin that works within a slot 45 formed in the rib or flange and at its lower end by
links 46 to a rod 47 arranged to slide in guides 47ª. Motion in one direction is
imparted to the rod 47 by a lever 48 pivotted at 49 and operated by a cam 50 on a
plate 51 secured to the segmental wheel 19. 52 is a spring for imparting motion in
the opposite direction to the rod 47; it is secured at one end to the rod 47 and at the
other end to one of the side frames 36. 53 is a case fixed to the table 27 and
containing a spring buffer against the head 54 of which a shoulder 39ª (Figs. 2 and 8)
on the pusher acts when the latter has nearly completed its outward stroke under the
action of the spring 52; the pusher is thus cushioned and brought to rest without
shock. 55 is a lever pivotted to the table 27; it is connected at one end to a

page_text: spring 56 that causes it normally to assume the attitudo shown in Fig. 2, in which
attitude its free end acts as a safety stop to prevent inward movement of the pusher
until the article to be weighed and marked has been completely placed upon the
table. The act of effecting this will cause the lever (by reason of the article being
pushed against it) to assume the position indicated by dotted lines, in which position
it will leave the pusher free to act. Thus crushing of an article by the pusher which
might occur if it were partly on the band or apron 26 and partly on the table 27 is
prevented.
The lever 55 or safety stop is designed to come into action to arrest the pushor
only in the event of neglect on the part of an attendant to always keep at least two
articles such as tins of biscuits on the band, or apron. Whilst there are not less than
two articles on the band or apron, the forward one will be forced into proper position
on the table 27 by the article or articles behind it.
The tension of the driving belt is such that when the pusher is arrested such belt
will slip on its pulley and thus prevent breakage of any part of the apparatus.
58 is a table having an inclined part on to which an article, after being weighed
and marked, is pushed by a succeeding article; it is provided with anti-friction
rollers 59 which enable an article to readily slide down on to a support or table, part
of which is shown in dotted lines at 60, or it may be on to a travelling band which
may carry the article to any desired place.
61 is a type wheel or disc fixed to a shaft 62 mounted to rotate in bearings carried
by standards 63 secured to the main framing 36. 64 is a pulley secured to one end
of the shaft 62. 65 is a driving cord or gut for rotating the pulley 64 and type wheel
or disc 61 in one direction; it is wound upon and secured at one end to the pulley 64
from which it passes partly around a guide pulley 66 carried by one arm of.a bell
crank lever 67, thence partly around a second guide pulley 68 mounted in a bridge
piece 69 carried by the table 27, and the other end of the cord or gut 65 is secured to
the front portion of the pusher 39 as shown in Figs. 2 and 4, and by which it is
operated. 70 is a brake drum secured to the shaft 62 and provided with a brake
strap 71, one end of which is secured to a pin 72 fixed to the adjacent standard 63.
The other end of the brake strap is secured to the weighted arm 73 of a bell crank
lever which is loosely mounted upon a fixed rod 74 and has its other arm 75 extending
downward sufficiently far to he operated by the raised forward part of the pusher just
before this reaches the end of its outward or return stroke. When the arm 75 is thus
operated, the brake drum is relieved from the friction of its strap. 76 is a spring
secured at one end to one of the frames 36 and at its other end to the short arm of the
bell crank lever 67 by it the long arm of this bell crank lever is enabled to take up
slackness in the cord 65. 77 is a projecting bar secured to the bridge piece 69; it
serves to limit the movement of the long arm of the bell crank lever 67 to the left.
78 is a flexible connector secured at one end to a pulley 79 fixed to the shaft 62, and
at its other end to a weight arranged to move vertically in a cylinder 80 and which in
falling, when the brake drum 70 is relieved of the friction of its strap, rotates the
shaft 62 and type wheel or disc in an opposite direction to that in which it is
turned by the cord 65 until it is arrested by a lever 81 as will hereinafter be
described. 82 is a guide pulley for the connector 78. The cylinder 80 may be
partly filled with water and act as a dash pot.
To adapt the type wheel or disc for marking or printing goods the dimensions of
which vary slightly in height, the parts 83 at the ends of which type (preferably of
india-rubber) are carried are each mounted with their inner ends within a case or
chamber 84 (Fig. 10) which is secured to one side of the disc and encloses a spring 85
that normally forces the corresponding part 83 outward as shown, but which will
nevertheless yield slightly when an article that has been weighed is being marked.
Each part 83 is provided with a pin 86 that projects through slots in its container 84,
and serves to limit the outward movement of the part 83.
87, 87 are stops or projections by contact with which the lever 81 arrests the
motion of the type wheel or disc caused by the falling of the weight in the cylinder 80.
They are secured to one face of the type wheel or disc as shown. 87, 87ª, are

page_text: distance pieces of suitable material such as wood between the stops or projections 87.
89 is a rod connected to the lever 81 and extending through a projection 1ª of thie
scale pan 1; it is provided with an adjustable nut 89 and is operated, for determining
the position of the lever 81, in a similar manner to that described in the former
specification hereinbefore referred to. The lever 81 is fixed to a spindle mounted
between anti-friction wheels 90; its outer end is weighted and may be provided with
a piston preferably of a form resembling two perforated saucers placed with the under
part of one opposite that of the other and arranged to work in a vessel containing
fluid such as water. By this arrangement motion of the lever 81 is made steady and
vibration thereof damped. 91 is a flexible strip secured at one end to the cross bar
that carries the lever 81. It extends below the types and is perforated so as to be
forced over the lowest type by an article when it is raised to be marked. The strip
serves to prevent such article being marked by the types adjacent to the lowest one.
To prevent recoil of the type wheel or disc when its motion is arrested by the
lever 81, a ratchet wheel 92 is fixed to its shaft, and into it takes a pawl 92ª when
the motion of the type wheel or disc is arrested. The pawl is pivotted to one of the
standards and is provided with an extension 93. 94 is a spring that presses the pawl
upon the ratchet wheel when the type wheel or disc is being rotated under the action
of the weight in the cylinder 80. When the type wheel or disc is rotated in the
opposite direction, by tlie cord 65, the pawl is raised clear of the ratchet wheel 91 by
a bar 95 which depresses the extension 93 of the pawl. This bar 95 is connected to
one arm of a lever 96 pivotted to one of the side frames 36 and actuated by a cam 97
on the crank shaft. 98 is an inking roller for the types. 99 is a spring stop; it is
arranged to come into contact with a pin 100 on the type wheel or disc and prevent
the same being rotated too far by the driving cord 65.
The operation of the machine is as follows:-Articles to be weighed and marked
and which I will assume to be tins (containing biscuits for example) are placed upon
the band or apron 26 and the driving shaft 16 is set in motion. Thus the tins will be
successively fed forward to the table 27. The wheels 19 and 20, crank shaft 21, and
toggles are so arranged that as each tin arrives in its proper position on the table 27,
the convex part 19* of the wheel 19 will begin to slide past the concave part 20* of
the wheel 20 and the motion of the scale pan 1 and band or apron 26 will then be
arrested, and the scale pan be rigidly held by the projections 10, clear of the plate 3
of the weighing mechanism as shewn in Fig. 5. The continued rotation of the
wheel 19 will cause the cam 50 to operate the lever 48, which through the mechanism
herein before mentioned, will cause the pusher 39 to make its inward stroke and
automatically transfer a tin from the table 27 to the scale pan 1 at which time the said
convex part 19* will have passed the concave part 20*. The wheels 19 and 20 will
then again come into gear causing the wheel 20 and crank shaft 21 to be rotated and
the toggles to be straightened thereby lowering the rods 11 and leaving the scale pan
with tin thereon, upon the plate 3. The weighing of the tin will then take place, and
the end of the lever 81 adjacent to the pins or projections 87 will be depressed by the
part la and rod 89 to an extent that will be proportional to the weight of the tin.
The inward stroke of the pusher 39 will cause the cord or gut 65 to rotate the type
wheel or dise 61 in one direction and so raising the weight in the cylinder 80.
The type wheel or disc with its shaft 62 will be held stationary by the brake strap 71
during the greater part of the return movement of the pusher and until the forward
part thereof acts against the long arm 75 of the bell crank lever mounted on the
spindle 74 when the brake strap will be released. The type wheel or disc will then
commence to rotate in an opposite direction under the action of the weight falling in
the cylinder 80 until the stop or projection 87 corresponding to the weight of the tin
comes in contact with the lever 81 and arrests the motion of the type wheel or disc
with the proper type 83 directly over the tin. During this reverse motion and
arrestation of the type wheel or disc, the continued rotation of the crank shaft 21 will
move the toggles to the right thereby causing the angle between the toggles to become
gradually less, and raising the scale pan by means of the rods 11, free of the weighing
mechanism and to a height sufficient to press the tin against the stamp or type 83

page_text: corresponding to its weight, after which the scale pan will descend until it is level
with the table 27 when it will be again arrested clear of the plate 3 in consequence of
the parts 19 20 commencing to again slide past each other. The pusher will then
again be operated to push another tin from the table 27 to the scale pan, the tin
previously weighed and marked being pushed thereby over the table 58. The
operations hereinabove described will then be again repeated with the fresh tin to be
weighed and marked.
It will be obvious that the details of the machine may be variously modified. Thus
in some cases a pendulum balance may be used in lieu of a spring balance. The
lever 81 instead of being arranged to abut against the projections 87 may be made of
hook form to engage with projections that should be then correspondingly modified in
form. In some cases the shaft 62 may be provided with a pinion to which motion can
be imparted in opposite directions by a rack or toothed plate. This rack or toothed
plate may be formed with a series of steps, one or other of which, according to the
weight of the article weighed, will come into contact with a bar or stop, the position
of which is determined by the scale pan. The toggles may in some cases be operated
by a crank, the throw of which can be adjusted, to adapt the machine to weigh and
mark articles of various sizes. In a modified form of machine, the toggles may be
arranged to be operated by a hand lever, the extent of movement of which can be
regulated according to requirement.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In machinery or apparatus for weighing and marking articles weighed the use
in conjunction with the weighing and marking mechanism of driving gear which has
dwell :3
at one part of its revolution to enable one article to be automatically
removed and another to be automatically placed in position ready for treatment by a
part of the gear not affected by the "dwell" substantially as described.
ધી
2. In machinery or apparatus for weighing and marking articles weighed a
vertically moving scale pan subject to the action of intermittently driven toggles by
which the pan is allowed to descend to weigh the article on it, is then raised to mark
the weight on the article, and is then lowered until it comes to rest at a convenient.
level for the removal of the article and the substitution of another substantially as
described.
3. In machinery or apparatus for automatically weighing and marking articles
weighed, causing the scale pan for the reception of the said articles to move vertically
and without angular movement substantially as hereinbefore described.
4. In machinery or apparatus for weighing and marking articles weighed, a
printing device having stamps or types that can recede slightly under the pressure
of the article weighed substantially as hereinbefore described for the purpose set
forth.
5. In machinery or apparatus for weighing and marking articles weighed, the
combination with a moving printing device designed to be arrested when the proper
type comes into position over the article to be marked, of means for preventing
recoil of the said device when suddenly arrested substantially as hereinbefore
described.
6. In machinery or apparatus for weighing and marking articles weighed the use
of a travelling band or apron in combination with a pusher which automatically causes
the articles supplied by the band or apron to be delivered onto a scale pan, substantially
as described.
7. Machinery or apparatus for weighing and marking articles weighed wherein
each article to be weighed is supplied in an automatic manner to a scale pan which is
held stationary and out of contact of the weighing mechanism whilst the article is
being placed thereon, is afterwards lowered with the article thereon so as to be
supported upon the weighing mechanism and the article weighed, is then raised so as
to press the article into contact with a printing stamp or die corresponding with the
B

page_text: weight of the article, and is then lowered until it assumes the position to receive
another article in which position it is held stationary during the removal of the
weighed article and the placing in position upon it of another article to be weighed
substantially as herein described.
8. My improved machinery or apparatus for, weighing and marking articles weighed,
constructed arranged and operating substantially as hereinbefore described with
reference to and shown in the drawings.
Dated this 18th day of September 1888.
WM. SNELGROVE.
W. Lloyd Wise,
Per J. G. S.,
Agent for the Applicant.