Improvements in Machines for the Manufacture of Paper Boxes.
Year: 1899

page_text: Date of Application, 28th Nov., 1899-Accepted, 3rd Mar., 1900
[Communicated from abroad by GEORGE ASA BARNES, of 71, Dickerman Street,
New Haven, in the County of New Haven, and State of Connecticut, United
States of America, Manufacturer].
Improvements in Machines for the Manufacture of Paper Boxes.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,"
45, Southampton Buildings, in the County of Middlesex, 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:-
The invention, subject of the present application for letters patent, is an im-
provement in machines for making paper boxes pertaining more especially to
that type of machine which is designed to automatically convert a continuous
strip or web of paper which is fed to the machine, into a series of such boxes.
The improved machine comprises, first; any proper and conveniently located
device for supplying a long strip or web of paper or similar material which is
to be made up into boxes: second, a device for applying to the said strip or web, an
adhesive substance at definite points: third, a feed mechanism for drawing the
strip or web from the supply roll and causing it to pass through the machine at
proper intervals and at a rate proportionate to the speed at which the machine is
driven; fourth, a device for cutting or punching out portions of the strip to enable
it to be properly folded; fifth, a cutting mechanism for dividing the continuous
web of paper into sections or blanks each of the exact size necessary for a box of
given dimensions, and lastly a folding mechanism which transforms the said
sections or blanks into boxes.
The particular features of novelty which distinguish the invention may be more
readily indicated by the following general statement of the part which each of the
more important elements, above enumerated, performs in the operation of the
machine.
By the instrumentality of the feed mechanism, the strip or web of paper is
drawn off from a supply reel and round a suitable cylinder or roll, over a reservoir
of glue. Special devices operate to apply to those portions of the paper which
subsequently form the ends of the boxes and which are brought together by the
folding mechanism, extremely thin and evenly spread layers of the glue.
The paper is advanced intermittently through the punching mechanism to the
devices which divide it up into sections and fold the sections into boxes. During
the periods of rest of the feed mechanism, which coincide with the periods of
operation of the folding mechanism, the punches cut inwardly from the edges of
the web, narrow strips to relieve the corner folds, and as thus prepared the web
reaches the folding mechanism.
When the proper length of web has been supplied to the folding mechanism,
a former-plunger of the exact dimensions of the interior of the box advances
toward the paper and binds it against a stationary rigid bottom-block. A cutting
device then severs the section to be folded from the main web, and while the
severed section is retained in position by the pressure of the former-plunger.
double sets of folder-plates advance and successively fold the sides and ends of
B071

page_text: the blank over the said former and compress the folded end portions. The
several parts of the folding mechanism then resume their normal positions ready
to operate on the next section or blank, and the completed box, by the withdrawal
of the plunger, is dropped out of the machine through a suitable opening.
The more important features in the machine as thus organized which are of
my invention are the following:
First the surfaces which take up the adhesive material from the reservoir
and apply it to the paper are so arranged that no glue in excess of the minimum
quantity actually demanded is transferred to the paper. For this purpose there
are used in connection with the gluer rolls, scrapers or wipers which pass not only
over those portions of the rolls which come into direct contact with the paper, but
over all adjacent surfaces upon which glue could collect in such manner as to be
deposited upon the paper. In other words, the scrapers or wipers are in unin-
terrupted contact with the peripheral and adjacent surfaces of the gluer rolls.
whatever the conformation of these may be, and by whatever means they are caused
to intermittently apply the glue to the paper.
Secondly, the folding of the blanks or sections of web into boxes is effected by
independently and successively operating folder-plates or blades which advance
through a stationary guide-block and which, sliding in contact therewith, bend
and press the edges and ends of the blanks around a former-plunger which binds
or clamps the central portion of the blank against a stationary bottom-block.
In addition to these chief features of the invention, the machine embodies
other novel details which have been devised for more effectively carrying out
the objects of the invention, and which will be more particularly hereinafter
specified in specification and claims.
In the drawings hereto annexed the details of the machine above generally
described are illustrated.
Fig. 1 is a plan view; Fig. 2 a side elevation, and Fig. 3 an elevation of the
rear end of the machine.
Fig. 4 is vertical section on line A-B of Fig. 1.
Fig. 5 is a vertical section on line C-D of Fig. 1.
Fig. 6 is a plan view of a portion of the folder mechanism.
Fig. 7 is a perspective view of the same.
Fig. 8 is a vertical section on line A-B of Fig. 7.
Fig. 9 is a sectional view of a portion of the mechanism employed for dividing
the paper web into sections.
Fig. 10 is a perspective view of one part or element of the folding mechanism
with one of the folding plates removed.
Fig. 11 is a side elevation of one of the end folder-plates showing the several
positions of the corner folders in relation thereto.
Fig. 12 is a perspective view of portions of the former-plunger and bottom-
block showing a modification of the same.
Fig. 13 is a perspective view of the gluer rolls and scraper mechanism, and
Fig. 13a an enlarged view of a portion of one of the rolls.
Fig. 14 is a perspective view of a tension adjusting device used in connection
with the gluer rolls.
Fig. 15 is a sectional view of a device for adjusting the gluer rolls.
Figs. 16 and 17 are views of detached parts of the guide frame of the machine.
Fig. 18 is an end elevation of the lever mechanism for operating the cutting
mechanism, and one of the elements of the folding mechanism.
Figs. 19, 20, 21, 22, 23 and 24, are views of the several operating cams used in
the machine.
Fig. 25 is a plan view of the paper strip or web in the condition in which it
reaches the folding mechanism.
Figs. 26 27 and 28, illustrate the different conditions of the blanks after the
several operations of the folding mechanism.
The numeral 1 designates the bed of the machine, 2 the legs, 10 the main

page_text: driving shaft, 15, 15a the hangers, 102 the balance wheel, 103 the driving clutch
pulley, 104 the clutch sleeve, 105 the clutch lever pivotally secured at one end to
the bracket 106 bolted to the leg, the table, 4 and 4a the uprights, 5 the upper
and the lower feed roll.
Roll 5 is keyed upon the shaft 5ª which rotates in the boxes 5b-5b at opposite
ends of the said shaft, the said boxes being mounted in the housings 5"-5" which
are bolted to the top of the table 3 by the stud bolts 5d5d.
Roll is beneath the table and keyed to the shaft 6ª, which is journaled in the
upright 4 and 4ª, the table 3 being cut away at 7 so that a portion of the periphery
of the roll will be substantially flush with the top of the fable.
A vertical adjustment is given the roll 5 by the thumb screws 8--8 which are
threaded in the caps 9-9 and bear upon the ton of the boxes 5, 5b, the boxes
being supported by the screws 8ª which are adjustable in the bottom of the said
housings.
The intermittent motion of the feed rolls is derived through the mechanism
now to be described.
The numeral 11 designates the feed cam fixed to the shaft 10, 12 the sector in
the form of a bell-crank one end of which is provided with gear teeth and the
other with a cam-roll 13, the said sector being fulcrumed at its center upon the
pin 14 held rigidly in the hanger 15, 16 the intermediate gear meshing into the
sector 12 and loosely mounted on the stud 17 fastened to the upright by the
nut 17, 18 the pawl carrier having gear teeth cut in a portion of its outer surface
and loosely mounted upon the end of the shaft G inside the collar 19 and nut 20,
21 the pawl hung upon the pin 22 secured to the pawl carrier 18 by the nut 21",
23 the ratchet disk fixed to the shaft Gª and provided with ratchet teeth 23ª and
a like number of peripheral recesses 23b, and 24 the retaining hook hung upon
the stud 24ª in the upright 4.
As the shaft 10 and feed cam 11 rotate, the sector 12 is caused to swing upon
the pin 14, according to the position of the cam roll 13 in the groove of the cam,
the sector remaining idle while the cam roll is in that portion of the groove which
is concentric to the shaft and operating while travelling through the remainder
of the groove.
The swinging of the sector 12 imparts a partial rotary movement to the pawl
carrier 18 through the intermediate gear 16; as the pawl carrier rotates, the pawl
21 catches against one of the ratchet teeth upon the ratchet disk 23 and carries
with it, during its partial rotation, the disk 23 and shaft Ga.
The rolls 5 and 6 are preferably hollow and in many cases it is desirable to
coat them with rubber. They are connected with each other by the spur gears 25
and 25ª fixed respectively to the shafts 5a and Ga.
It is essential to the operation of a machine of this character that the paper,
fed to the forming mechanism, should be exactly long enough to form a single
box and no more or less, and to insure the continued feeding of successive strips
of exactly the same length I have provided the retaining hook 24, the end 24b of
which is held against the periphery of the rachet disk 23 by the spring 27 and
drops into the recesses 23b when the same are brought into register therewith.
Trip-plate 26 is loosely fixed upon the shaft 6 between the upright 4 and the
ratchet disk 23 and connected with the pawl carrier 18 by the pin 22, the end of
which passes through the hole 262 in the said plate.
The trip-plate 26 and pawl-carrier 18 operate together, and as the pawl carrier,
and trip-plate are brought to their stationary positions (see Figure 2) the rounded
corner 26 of the trip-plate 26 engages the rounded end 24' of the retaining hook
and forces it out of the peripheral recess in the ratchet disk 23 upon the circular
edge 26 where it remains idle until the plate is again rotated, and carried
away from the hook when the spring 27 holds it against the periphery of the
disk 23.
Figure 2 illustrates the several positions of the feed roll mechanism when the
rolls are at rest, the hook 24 being out of engagement with the recesses 23b. The

page_text: circular edge 26 of the trip-plate is long enough to hold the hook 24 out of en-
gagement with any of the recesses 23b until they have passed the end 24.
The operation of this mechanism is as follows:-The pawl carrier is given a
partial rotation as hercinbefore described, the pawl catches against one of the teeth
of the ratchet disk thereby imparting a partial rotation to the feed rolls, the trip-
plate holding the hook away from the periphery of the ratchet disk until the
peripheral recess has passed, when the spring 27 pushes the hook against the face
of the said disk. The rotation continues until sufficient paper has been fed into
the folding mechanism when the end 24 drops into one of the peripheral recesses
23 immediately checking the rotation of the rolls and preventing their momentum
from rotating them further. The hook remains engaged with the ratchet.disk
until the box is formed and while the pawl carrier is returning to its original
position, when it is forced out of the recess by the trip-plate in the manner
before described.
The gluer mechanism comprises a water tank 29 fastened to the bed of the
machine by the brackets 29ª, gluer trough 28 secured above the water tank, gluer
rolls 30-30 fixed to a gluer shaft 30 which is journaled at either end in bear-
ings 30-30 provided with the hinged caps 30-30°, scrapers 31-31, and spring
plate 31 fastened to the scraper bar 31 held at either end in the lugs 3131°
integral with the trough 28, and scraper springs 31-31ª. Fixed to the shaft 6*
is the spur gear 32 which is connected with the adjusting gear 33 through the
intermediate gears 34 and 35. Gear 34 is loosely mounted upon the stud 34"
screwed into the upright 4 and gear 35 is free to rotate upon the stud 35ª screwed
into the bracket 35 secured to the same upright. Upon the periphery of the
gluer.rolls are a plurality of integral gluer pads 36, the ends of which slope
gradually, as at 36, to the face of the roll. These pads pick up the glue in the
trough and are brought into contact with the paper strip by the rotation of the
.rolls.
In gluers heretofore made, it has been impossible to use a common glue of a
course body and prevent a lump of glue from forming at either end of the pad.
To overcome. this difficulty the gluer rolls are provided with a periphery without
abrupt or angular changes in contour, and are engaged by scrapers 31-31, which
have an open end, so as to scrape the entire periphery of the rolls and that
portion of the sides immediately adjacent thereto.
The lower portions of the gluer rolls 30-30 are immersed in the liquid glue in
the trough 28 and are rotated simultaneously with the feed rolls 5 and 6 in the
direction of the arrow in Figure 13, through the spur gears 32-33-34. and 35.
As the rolls rotate they carry with them a quantity of the glue from the trough,
and the scrapers 31-31 which are held constantly against the gluer rolls by the
springs 31 31* remove from the face of the rolls substantially all of the glue,
which drops back into the trough. A shield 31-31° upon the under side of the
scrapers prevents the glue from running down the under side thereof and harden-
ing upon the scraper bar. Just sufficient glue remains on the pad to make a
thin light deposit upon the. paper strip when the pad is brought into contact
therewith. It is clear that as the scrapers follow the contour of the gluer rolls,
all of the surplus glue will be removed from the face thereof and no glue can
collect in the corners of the gluer pads. The method of heating the water in the
tank 29, for liquefying the glue is not shown or described, it not being essential to
my invention, as any of the methods comnion to the art may be used."
To regulate the quantity of glue to be deposited upon the paper there is used
a tension device for varying the tension of the scrapers upon the face of the rolls.
This device (see Fig. 14) comprises the arm 37 fastened securely to the scraper
bar 31, the swivel pin 37 with the flat head 37b and the thumb screw 37° threaded
in the overhanging ledge 38 of the glue trough. By adjusting the thumb
screw 37, the desired tension of the scrapers on the glue rolls may be acquired
and a greater or less quantity of glue will remain on the pads after they have
passed the scrapers, according to the tension thereof.

page_text: In Figure 15 is illustrated a section of the mechanism for adjusting the position
of the gluer rolls so that the glue deposited upon the paper strip can be located in
the desired position.
The numeral 39 designates a collar fixed to the shaft 30 by the key 39b, and
having the integral shoulder 39, upon which collar is loosely mounted the
gear 33; 40 indicates the retaining disk and 41-41 the key-bolts. It will be
borne in mind that the relative positions of the gears 33 and 32, are permanent
and that the position of the gluer shaft 30 only can be changed in relation to the
gear 32. By unscrewing the bolts 41 the gluer shaft 30 can be turned freely
and brought to any position in relation to the gear 32, after which by tightening
the bolts 41 the pressure of the retaining disk 40 against the head of the collar 39
is sufficient to hold the gluer shaft permanently in its adjusted position.
For convenience in removing the gluer rolls and shaft from the trough the
caps 30-30, Figs. 1 and 2, are hinged by the pins 30-300 to the integral cars
30-30 upon the overhanging ledge of the gluer trough, and held in their normal
positions by the thumb screw 30-30h.
By the gluer mechanism above described a common cheap glue of a coarse
body can be used, and the amount and position of the same deposited on the paper
strip, regulated to the exact quantity or position desired, the glue deposit also
being of a uniform thickness without lumps at either end.
The slits 42 (Fig. 25) which are cut in the slit to admit of the folding thereof
are made by the punches 43-43 and die 44 (Figs. 4 and 5) immediately after the
strip has passed through the feeding rolls, and while the feed rolls are stationary
and the folding mechanism operating upon the blank. The punches 43-43 are
bolted to the punch holder 43 and the slight vertical adjustment required to take
up the wear caused by regrinding is secured by the set screws 43b-43b
Punch holder 43ª derives its up and down movement upon the posts 45-45
from the cams 48-48 through the pitmen 46-46 (Figs. 5 and 24) pivotally con-
nected at their upper ends to the said punch holder by the swivel pins 47-17,
and provided at their lower ends with the cam rolls 46-46ª which travel in the
irregular grooves 48 of the said cams. The die 44 is embedded in the table 3
with its upper face flush with the top of the table, and fastened beneath the said
table conveniently near the punch holes in the die 44 is the sheet metal chute 49
which guides the cuttings from the punches through the hole 50 in the bed of the
machine, into a receptacle placed to receive them.
51 designates the guide table which is pivotally secured to the cars 52-52 of
the table by the pintle 53, the top surfaces of both of said tables being substan-
tially flush with each other (Figs. 1, 2 and 4). The front end of the guide table
is rounded at 51ª to guide the paper strip vertically into the following mechanism.
Upon the upper side of said table are screwed the side guides 54-54 which are
angular in cross section and support the tie bars 54-54 upon the under side of
which is secured the top guide 54 which consists of a flat sheet of metal and ex-
tends from a point adjacent to the punches around a portion of the rounded end
51. The rounded end 51 is suspended above the machine by the straps 55-55
(Fig. 2) pivotally secured at their top ends to the table by the screws 55-55ª
and at their lower ends to the guide-block 56 by the screws 55-55 which pass
through the elongated slot 55°. 57 designates an adjustable post for supporting
the guide table, which post is threaded in the cap 58 at its lower end. The
post 57 is rotated by inserting a pin in the hole 57", and is locked in any of its
adjusted positions by the check nut 57b.
The paper strip is drawn by the feed rolls through a vertical guide frame 96
(Figs. 3 and 4) over a plate 97. between the pressure roll 98 and the gluer
rolls 30-30, over an auxiliary guide table 99 and between side guides 100. It is
pushed by the said feed rolls over the die 44, guide table 51, under the top
guide 54b and between the side guides 54-54 and over the rounded end 51ª where
it is presented to the folding mechanism. The vertical guide frame 96 is con-

page_text: structed of a sheet metal back 96 bent outward at the bottom end and fastened
by screws to the collars 96-96³.
Upon either side of the center of said back 96 are secured metal bars 96-96°
forming side guides, and between the said bars is the spring plate 96d, screwed to
the collar 96 Spring plate 96 holds the paper strip against the back of the
guide 96 and prevents sagging and buckling. Collars 96 and 96° are made fast to
a round bar 96 which is bolted to the leg of the machine by tap bolts 96-96.
Above the gluer rolls is the pressure roll 98 which forms a backing for the said
gluer rolls as they are brought into contact with the paper strip. The said
pressure roll is free to rotate by the friction of the paper strips over it, upon the
stationary shaft 98b, hetween the flanged collars 98*98* made fast to said shaft.
The shaft 98 is supported by the overhanging arms 101 which are bolted to the
under side of the table 3, and has a limited vertical adjustment in relation thereto
to vary the pressure on the gluer rolls, by means of the set screws 101ª which hold
the said shaft within the slot 101b.
That portion of the mechanism which takes the strip and folds it into the
completed box, will now be described.
In Figure 25 the strip is illustrated as presented to the folding mechanism and
ready to be folded into a box, the letters - designating the glued portions.
The numeral 56 (Figs. 5, 6, 7 and 8) designates the guide block, having the
central portion cut away for the folders and secured to the bed of the machine by
the bolts 59 59", 58 designates the cap which is fastened to the guide block by
the cap screws 58, 60 the stationary knife fixed to the under side of the cap 58,
61-61 the end folders, 62-62 the side folders, 63 the corner folders, 90 the
bottom-block, 90 the bolts which pass through the blocks 56 and 90 and hold
the bottom-block, 90 the nuts on the ends of the bolts 90ª, 64 the folder-head,
65 one of the folder levers, 64ª the links which connect the lever 65 with the
folder-head 64, 65" the swivel pins for joining the links 64 with the folder-head 64
and the lever 65, 66 the toggle joint for operating the end folders, 67 the end folder
lever and 68 the swivel pin which pivotally secures the said yoke to the end of
the lever 67.
Levers 65 and 67 (Figs. 19 and 22) are loosely fulcrumed about midway of
their length upon the shaft 87 and are caused to oscillate upon the said shaft by
the cams 79-80, there being a cam-roll 88-88 upon each of the said levers which
follows the grooves in the respective cams. The hangers 89-89, which are
bolted to the under side of the bed 1 upon either side of the said levers, hold the
shaft 87 in its fixed position.
The toggle joint 66 (Figs. 4. and 6) is composed of the two members 66ª, 66ª
joined together by a knuckle joint and kept in their normal positions by the
spring 66. Each of said members is provided with a stop-lug 66 and a spring
lug 66. Through the center of the said members is the swivel pin 68 which
holds them together, the shank portion of the said pin fitting freely within the
hole 67 in the end of the lever 67.
The rounded ends 66-66 of the said members are imbedded in the semi-
circular recesses 61-61ª in the end folders, the ends and recesses being semi-
circular so that a practically universal joint may be secured. The four corner
folders 63, are pivotally secured at their rear ends to the folder-head 64 by
pintles 91, the inner edges of the catches 63ª resting against the ledge 61b of the
end folders with the outer end substantially flush with the front end of the side
folders 62-62.
The side folders 62-62 are T shape, the head portion being substantially the
width of the side of the box, and the inner front edges being rounded to prevent
tearing the paper when the folders are brought into contact therewith. The body
portion of the said folder is secured at its rear end to the folder-head 64 by the
screws 92 and slide within recesses formed in the cap 58 and guide block 56.
(See Figure 8). A friction plug 63d kept by the coil spring 63° in contact with

page_text: the upper side folder holds the latter against the top of the bottom-block, but allows
it to be pushed upward slightly, to accommodate the paper stock should it vary
slightly in thickness. An elongated slot 62ª is cut through the body portion of
the lower side folder to permit the bolts 90 to pass through, (Fig. 4).
69 designates the former-plunger, 70 the guide frame base secured to the bed
of the machine by the tap bolts 70, 71 the guide frame within which the former-
plunger is fitted, 72 the reciprocating knife, 73 the knife slide, 74 slide caps, 75
the former-plunger crank arm, 77 the fulcrum shaft crank arm, 76 the knife lever,
75 the links connecting the crank arm 75 with the former-plunger 69; 70 the
links connecting the lever 76 with slide 73 and 75 and 76b the screws and bolts
respectively for securing the links 75 and 76" in their operative positions. The
crank arms 75 and 77 are keyed by the pins 75-77 and the lever 76 is fulcrumed
and free to rotate on the shaft 78 which is journaled at either end in the integral
ears 1-1.
Motion is imparted to the former plunger and knife from the cams 79-80
through the connecting rods 81-82, each of which is provided with a cam roll
81 82 fitted into the groove of its operating cam. The said connecting rolls
are constructed of a flat metal bar having a yoke at one end to straddle the
shaft 10 and a rounded end for the threaded adjusting rods 83 83 which unite the
swivel blocks 84-84 pivotally joined to the crank arm 77 and lever 76 by the
studs 85-85. To adjust the movement of the former-plunger 69 and knife
slide 73, the jam nuts 86 are loosened and the threaded rods 83-83 are turned
until the exact movement is determined when the jam nuts are tightened and the
parts are again locked together.
The operation of the following mechanism is as follows:
The glued strip having the notches cut therein as shown in Figure 25 is fed
over the rounded end 51 of the adjustable table and is presented in front of the
bottom-block 90 in a vertical position, the four corners of the bottom-block being
even with the inner ends of the said notches. The former-plunger 69 which is of
the same size as the inside of the box, now advances and holds the blank rigid
against the bottom-block.
By a quick stroke of the slide 73 which follows immediately after the former-
plunger has come in contact with the blank, the latter is severed from the strip on
line 6 (Figure 25) between the reciprocating knife 72 and the stationary knife 60.
The folders remain stationary during these operations, the front ends of all of
'hem being slightly to the rear of the face of the bottom-block, their relative posi-
tions being illustrated in Figure 10, the trip catches of the corner folders
being upon the ledge 61b of the end folders. All of the side and corner folders
operate together in their longitudinal movement, they being secured to the common
folder head 64. These folders now start forward, the side folders taking the blank
first and turning the sides thereof over upon the outside of the former-plunger.
The blank after this operation is shown in Figure 26. During this operation,
the corner folders have moved forward with the catches sliding along the ledge
upon the side of the end folders which are now stationary.
Simultaneously with the completion of the side folds, the rearwardly inclined
edge 63 of the catch is brought into contact with the pin 61º in the end folders,
the front end of the corner folders being over the corner flaps of the box: as the
advance movement of the folders continues the pins 61 sliding over the inclined
edges 63 force the front ends of the corner folders towards each other, (see full
lines in Figure 11) and fold the corner flaps over the sides of the former-plunger.
The condition of the blank after this operation is shown in Figure 27.
After the corner flaps have been folded the end folders begin to move forward
by means of the lever 67 and the toggle joint connection 66, the corner and side
folders remaining stationary holding the incompleted box upon the plunger 69.
The end folders have just taken hold of the end flaps and folded them over
sufficiently to prevent the corner flaps from springing away from the former-

page_text: plunger when the edge 61° of the recess Gld is brought into contact with the rear
edge of the trip catch 633 (see dotted lines in Figure 11) and by the continued for-
ward movement of the said end folders the corner folders ride out of the said
recess into the ledge 61, being brought thereby to their original positions, and
the forward ends thereof are lifted away from the box and out of the path of the
end formers.
The end formers continue to move forward and fold the end flaps over upon
the corner flaps until the stop pins 93 abut against the rear face of the guide
block 56 (see Figure 6). The lever 67. however, does not stop its oscillating
movement, but the forward movement of the end folders being checked. the
toggle joint opens and spreads the rear ends of the said folders apart and draws
the front ends together. By drawing the front portions of the end folders
together the end and corner flaps are given a final additional pinch, after the
folding has been completed, which binds the glued portions together more
securely. The sides 93-93ª of the recess in the guide block are made con-
verging from the front to the rear to accommodate the spreading action of the
end folders. The side. corner and end flaps being folded, the box is completed
and all the folders withdraw to their original positions leaving the completed box
upon the end of the former-plunger, which now begins to recede. The box is
stripped from the plunger as it recedes, by the face of the guide frame 71 and
base 70, after which it drops through the hole 94 in the bed into a receptacle con-
veniently located to receive it. When the end folders are being withdrawn and
returned to their original positions the lugs 66-66 are brought together and
thereby prevent the rounded ends 66-66 from being drawn out of their rounded
socket seats in the end folders.
To prevent the end of the severed strips from catching upon the stationary
knife 60 there is provided a spring stripper which comprises a plate 95, the front
face of which projects slightly over the edge of the said knife, plugs 95ª fastened
to said stripper plate and fitted loosely within holes 95 in the front face of the
caps 58, coil spring 95° surrounding a portion of said plug and housed within the
said hole and locking pins 95 made fast in the said cap 58 and passing through
the longitudinal slots in the body of said plugs. It is apparent that when the
stripper plate is pushed back by the reciprocating knife, the springs 95 will
force it out to its original position, and with it the paper strip which passes down
in front, when the said knife recedes.
By unloosening the screws 55-55b and turning the adjustable post 57 the
front end 51 of the guide table can be raised or lowered, thereby shifting verti-.
cally the position of the strip which passes over it in relation to the knives.
It is possible by such adjustment to present the blank to the knives and folding
mechanism in any desired position.
Boxes are commonly made with a slight depression in the bottom to prevent
the sides from spreading outward, and in this machine this object is accomplished
by making the edges of the face of the former-plunger raised. thereby leaving a
central panel (see Figure 12) and by cutting off the edges of the bottom block to
fit into the recessed face of the said plunger.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed. as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1. In a machine of the character described, the combination of a roll having
a pad or raised portion thereon with rounded or sloping ends, and adapted to inter-
mittently take up glue and deposit it on the paper, of a scraper adapted to pass.
over the face of said pad and those portions of the surface adjacent thereto, and
in unbroken contact therewith and thereby remove the excess of glue both from
the face of the pad and the surfaces adjacent thereto. as herein set forth.
2. In a machine of the character described, the combination of a rotary gluer-

page_text: roll having upon its periphery raised portions or pads with rounded or sloping
ends, and a spring scraper bearing against the periphery of said roll and adapted
to remain in uninterrupted contact with the periphery and adjacent surfaces of
said roll, as set forth.
3. In a machine of the character described, the combination of an intermittently
revoluble gluer roll having upon its periphery raised portions or pads with
rounded or sloping ends, and a spring scraper bearing against the periphery of
said roll and adapted to remain in uninterrupted contact with the periphery and
adjacent surfaces of said roll, as set forth.
4. In a machine of the character described, the combination of gluer rolls hav
ing upon their peripheries raised portions or pads with rounded or sloping ends,
scrapers bearing against the peripheries of said rolls and maintaining uninter-
rupted contact with their peripheries and the adjacent surfaces, means for inter-
mittently rotating said rolls and means for adjusting the position of the said
rolls in relation to the paper carrying roll, as set forth.
5. In a machine of the character described, the combination with gluer rolls
having upon their peripheries raised portions or pads with rounded or sloping
ends, scrapers bearing with uninterrupted contact upon the peripheries and
adjacent surfaces of said rolls, and means for regulating the pressure of the
scrapers upon the peripheral surfaces of the rolls, as set forth.
6. In a machine of the character described, the combination of gluer rolls
having upon their peripheries raised portions or pads with rounded or sloping
ends, a shaft carrying said rolls, means for intermittently rotating the shaft,
scrapers bearing with uninterrupted contact upon the peripheries and adjacent
surfaces of said rolls, a bar to which said scrapers are attached, and a tension
adjusting device consisting of an arm fixed to said bar, a swivel pin pivotally
secured to said arm and a threaded thumb screw adapted to depress said arm by
contact with said swivel pin, substantially as set forth.
7. In a machine of the character described, the combination of gluer rolls
having projections or pads on its periphery, the said pads being of the same width
as the rolls with faces concentric with the axis of the rolls, and having rounded
or sloping ends, of spring scrapers adapted to bear with uninterrupted contact
on the peripheral face of the rolls and the sides adjacent thereto, as set forth.
8. In a machine of the character described, in combination with the blank
folding mechanism, a guide table pivotally secured at its rear end, the front end
of which is bent downward to change the path of travel of the paper strip from a
horizontal to a vertical, and means for adjusting vertically the front end of said
table, substantially as set forth.
9. In a blank folding mechanism for a machine of the character described, the
combination of a stationary bottom block, a reciprocating former-plunger, recipro-
cating side folders and end folders adapted to move longitudinally through guides
around the bottom block and along the sides of the former plunger in sliding con-
tact with the under surface of the sides and ends respectively of the blank, as set
forth.
10. In blank folding mechanism for a machine of the character described, the
combination of a stationary bottom-block, a reciprocating former-lunger, longi-
tudinally movable side folders and end folders adapted to pass along the sides of
the former-plunger in sliding contact with the under surface of the sides and ends
of the blank, and means for independently and successively advancing the side
and end folders while the former-plunger is at rest, as set forth.
11. In blank folding mechanism for a machine of the character described, the
combination of a stationary bottom-block, a reciprocating former-plunger, longi-
tudinally movable side folders and end folders, corner folding blades pivoted to
the side folders and engaging with the end folders, and means for successively
advancing the side and the end folders along the sides of the former-plunger and
in sliding contact with the sides and ends of the blank, as set forth.

page_text: 12. In a machine of the character described, the combination with the station-
ary bottom-block, of a guide block having a central recess within which is secured
the said bottom-block, a cap covering said guide block and enclosing the said
bottom-block side and end folders operatively retained within the said guide
block and surrounding the said bottom-block, with means for imparting move-
ment to said folders for the purposes set forth, substantially as described.
13. In a machine of the character described, the combination with the former-
plunger, of a bottom-block, side folders, means for advancing said folders over
the end of said plunger, corner folders means for tripping the said corner folders
when the said side folders have completed their forward movement, end folders
and means for advancing them over the end of said former-plunger not covered
by said side folders, substantially as set forth.
14. In a machine of the character described, the combination with the former-
plunger, of a bottom-block, side and end folders surrounding said bottom-block,
means for advancing said folders over the end portion of said plunger and means
for drawing together the ends of two of said folders after the said advance
movement is completed, substantially as set forth.
15. In a machine of the character described, the combination with the former
plunger, of a bottom-block, side folders, means for advancing said folders over the
end of said plunger, corner folders, means for drawing the ends of the oppositely
located corner folders together when the said side folders have completed their
forward movement, end folders, means for advancing them over the end of said
former plunger not covered by said side folders, and means for raising the corner
folders to their original position before the said end folders have completed their
forward movement, substantially as set forth.
1
16. In a machine of the character described, the combination with the station-
ary bettom-block and reciprocating former-plunger, of side folders movable
longitudinally along the sides of the former-plunger, corner folding blades carried
by said side folders and longitudinally movable end folders independently operated
and having parts extending into the path of movement of the corner folders, as
set forth.
:
17. In a machine of the character described, the combination with the bottom
block, of side and corner folders, a folder head to which said folders are secured,
means for actuating said folder head and folders, end folders, means for actuating
said end folders, means for drawing the ends of the oppositely located corner
folders together, and means for bringing the same to their original positions
before the advance movement of said end folders is completed, substantially as
set forth.
:
18. In a machine of the character described, the combination with the bottom-
block, of side, corner and end folders, means for actuating the same and means,
as a toggle joint, for drawing the front portions of the said end folders together,
substantially as set forth.
19. In a machine of the character described, the combination with feeding
rolls and means for imparting an intermittent movement thereto, of a stationary
bottom-block, reciprocating folder blades passing through slots therein, means
for advancing and withdrawing the folders along the sides of the central portion
of said block, a movable former plunger adapted to be moved toward and away
from the said bottom-block, and cutting knives for severing the blank from the
strip, substantially as set forth.
20. In a machine of the character described, the combination with the station-
ary bottom-block, reciprocating folder blades, means for advancing and with-
drawing the same through the bottom-block, and a former plunger operating in
conjunction therewith, of a feed table above said bottom-block having the front
end turned outward, and devices for adjusting vertically the front of said table,
substantially as described.
21. In a blank folding mechanism of the kind described, the combination with
a stationary bottom-block, a reciprocating former plunger, reciprocating folder

page_text: blades adapted to pass through slots in the bottom-blocks, and means for ad-
vancing and withdrawing the said folder blades along the sides of the former
plunger in sliding contact with the sides and ends of the blank, as and for the
purpose set forth.
Dated this 28th day of November 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.