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Патент USA US3097855

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July 16, 1963
A. J. FEDERKIEL
3,097,845
FORII FEEDER
Filed April 12, 1962
4 Sheets-Sheet 1
‘lnr
WVENTOR.
A. J. FEDERKIEL
BY 4261M Aim:
an‘? M
ATTORNEYS
July 16, 1963
A. J. FEDERKIEL
3,097,345
FORII FEEDER
Filed April 12, 1962
>
4 Sheets-Sheet 2
INVENTOR.
A. J. FEDERKIEL
BY
(‘at
MM
A TORNEYS
July 16, 1963
A. J. FEDERKIEL
3,097,845
FORII FEEDER
Filed April 12, 1962
4 Sheets-Sheet 3
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FIG.3
INVENTOR.
A. .1. FEDERKIEL
“W; , M ‘
ATTORNEYS
July 16, 1963
A.’ J. FEDERKIEL
3,097,845
FORM FEEDER
Filed April 12, 1962
4 Sheets-Sheet 4
Fl 6.6
FIG.9
INVENTOR.
A. J. FEDERKIEL
BY 46%;‘, w
‘*1
TTORNEYS
United States Patent 0 " lC€
1
3,097,845
Patented July 16, 1963
2
FIGURE 7 is an end view of the shuttle wheel of
3,097,845
FIGURE 6;
FORM FEEDER
1FIGURE 8 is a view of a modi?ed form of shuttle
Arthur J. Federkiel, 23135 Maybelle Drive,
Westlake, Ohio
Filed Apr. 12, 1962, Ser. No. 187,057
14 Claims. (Cl. 271-41)
wheel; and,
FIGURES 9 and 10 are plan and elevational views of
'a second modi?cation of a shuttle wheel.
The FIGURES 1-7 of the drawing show a lformlfeeder
11 which is illustrative of the preferred embodiment of the
‘invention but is only by way of example and not to be
speed feeding mechanism capable of successively feeding 10 construed as limiting the form in which the invention
?at forms ‘from a stack.
may be embodied. The form feeder 11-1 includes generally
a base 112 having an upright 13. An adjustable bottom
The invention relates more speci?cally to a feeding
plate 14 is carried on the base 12 and is pivoted at a
mechanism for feeding forms one at a time oif a stack
pivot 15 relative to the base 12. Adjustment screws 16
of forms wherein a shuttle wheel has a cam surface there
on acting as a drive abutment surface to engage one edge 15 adjust the position of the rear of the plate 14 relative
to the base 12. Adjustable throat blade .17 is adjustably
‘of a flat form. The drive abutment surface may be a
mounted vertically on the base upright 13 by screws 18.
cam surface or a generally helical surface having an ex
The lower-edge 19 of the throat blade17 is thus adjustable
posed arcuate portion substantially the same thickness as
vertically relative to the bottom plate 14 to establish a dis
‘that of the form and upon rotation of the shuttle wheel
carrying the drive abutment surface, this feeds the form 20 vcharge throat opening 20. A stack of forms 23 is held
generally in the plane of the form to discharge it to one
by gravity on the bottom plate 14. A ?rst form ‘24 is the
side of the stack of forms.
bottom form contiguous to the bottom plate 14. Each
form has a ?rst edge .25 adjacent the throat blade 17 and
Various types of form feeders or card feeders have been
a second edge 26 at the rear of the stack I23. Fixed bot
devised and in this invention, a form as de?ned herein
shall include, but is not restricted to, tab cards, card 25 tom rollers 28 are journalled on axles 29 to. generally sup
port the stack 23 near the ?rst edge 25. Fixed throat
board, cardboard cartons, plastic and metal plates, and
rollers 30 are journalled on the pivots 15 and support the
sheets, envelopes, books, magazines, tags, checks, etc. ‘A
particular use of this invention may be in the ?eld of
stack 23 generally directly under the ?rst edge 25 of the
business machine cards of cardboard or the like which
stack 23. These ?xed throat rollers 30* together with the
must be fed rapidly one at a time through a business ma 30 throat blade 117 ‘form the discharge throat opening 20.
chine. The prior art has known such devices as vacuum
This throat opening may be adjusted at the screws 18‘ to
cup arrangements to lift a top sheet off a stack and feed it
have a vertical height which is slightly greater than the
into a printing machine, for example, where such devices
thickness of one form in the stack ‘23 yet less than the
are reciprocating devices which inherently are exception
thickness of two such forms.
ally slow. Other forms of prior art devices have used
First and second helix shafts 33 and '34 are journalled
other types of reciprocating shuttles to feed one at a time
below the base 12 in a generally horizontal plane. First
The invention relates in general to feeding mechanisms
for feeding ?at forms and, more particularly, to a'high
a card or fonrn from a stack.
Because of the nature of
and second helix wheels 35» and 36 are ?xed on the respec
such reciprocating devices, there is a constant problem of
tive helix shafts 33 and 34. These'helix wheels may be
inertia of the reciprocating parts which must be acceler
considered as shuttle ‘wheels. First and second helix
ated, decelerated to a stop and then accelerated in the re 40 wheels 35 and 36 have raised helices 37 and 38, respec
verse direction.
tively. The ?rst helix 37 is a righthand thread and the
Accordingly, an object of the present invention is to
second helix 38 is a lefthand thread. Both helices have
obviate the above disadvantages of prior art form feeders
the same pitch angle and merely by way of example, this
‘by elimination of any reciprocating mechanisms.
might be :a ?ve degree pitch angle. Each helix 37 and 38
Another object of the invention is to provide a rotating 45 has an integral number of cycles per revolution of the
shuttle rather than a reciprocating shuttle in a form feed
respective wheel and in the ‘example shown, this integer
ing device.
is one. In other words, this is a single thread rather than
Another ‘object of the invention is to provide a form
a double or triple thread. .Eaeh helix 37 and 38 has an
feeding device operable at high speeds and with-excep
active portion 39 and a passive portion 40 as shown in
50
tional reliability.
FIGURES ‘6' and 7.
It has been found that an active
Another obiect of the invention is to provide a ‘form
portion 39 of about 270 degrees of the cycle is satisfac
feeding device for feeding forms one at a time off one end
tory and the passive portion 40 is the remainder of the
of a stack wherein a rotatable helical shuttle has a drive
cycle, which would be approximately 90 degrees. Each
abutment portion to engage one edge of a form for feed
helix active portion has .a forward edge v41, as illustrated
ing the same generally parallel to the plane of the form.v 55 in FIGURES 5 and 6, ‘for the one helix wheel 35. This
Other objects and a fuller understanding of the inven
forward edge may be considered a driving edge or drive
tion may be had by referring to the following description
abutment surface to abut and drive the second edge 26
and claims, taken in conjunction with the accompany
of the form 24.
ing drawings, in which:
The helix shafts 33 and 34 are mounted on the base 12
FIGURE 1 is a plan view of a ‘form feeder ‘embody 60 at an angle as viewed in ‘FIGURE 1. ‘This angle is sub
ing the invention;
FIGURE 2 is a side elevational view of the ‘feeder of
FIGURE 1;
FIGURE 3 is a rear elevational view of the feeder of
FIGURE -l;
FIGURE 4 is an enlarged sectional view on line 4-4
of FIGURE 1;
FIGURE 5 is an enlarged partial view on line ‘5—5 of
stantially equal to the given helix angle relative to -a
reference line 44 which is perpendicular to the throat 20.
Thus, with the right and lefthand helices 37 and 38, re
spectively, the helix shafts 33 and 34 are mounted at plus
and minus values of the given helix angle relative to this
reference line 44. Bevel gears l45 are ?xed on the helix
shafts and mesh with bevel gears 46 on an intermediate
shaft 47. Upper and lower shafts 48‘ and 49, respectively,
are journalled on the base 12 outboard of the throat 20.
70
vFIGURE 6 is a top‘ view of the shuttle wheel removed
Upper pinch rolls ‘50 are carried on the upper shaft 48
from the feeder;
and lower pinch rolls ‘51 are carried on the lower shaft
FlGUR-E 2;
.
3,097,845
4
49. An upper and lower pinch roll 50‘ and 51 together
constitute a pair and have a nip 52 outboard of the throat
20 and disposed generally on a reference plane 53. This
reference plane is the upper surface of the bottom plate
14 which also may be considered the engagement surface
that the various shafts are interconnected for a 1:1 rota
tion and, thus, one rotation of the shuttle wheel 36 will
move the bottom form forward about 3A" in this ex
ample. This same single rotation rotates the pinch rolls
50 and 51 ‘one complete revolution and since they are
shown as being 1.1” in diameter, this means the circum
ference is about 3.45". Thus, when the card has been
of the stack 23 on this bottom plate 14. The lowermost
or ?rst form 24 is contiguous with this bottom plate 14
and, hence, with the reference plane '53. An upper gear
moved forward su?iciently to be ‘gripped by the pinch
rolls, the pinch rolls will eject the card at about four
54 is ?xed on the upper shaft v48 and a lower gear 55
is ?xed on the lower shaft 49. These gears are intermesh 10 or ?ve times the speed of movement effected by the
helical shuttles 35 and 36. It will further be noted that
ing and the lower gear 55 also meshes with a gear 66 on
the horizontal space between the throat 20 and the nip
52 is less than the horizontal ‘distance ‘of driving of the
form as caused by the active portion 39. This assures
that the helical shuttles 35 and 36 Will drive the forms
forward far enough so that they enter the nip 52. The
pinch rolls 50 and 51 form a type of delivery means to
deliver the forms one at a time out of the form feeder
11 and in the same leftward path.
the intermediate shaft ‘47. A drive pulley 56 is provided
on the lower shaft 49 for belt drive of the entire form
feeder 1.1 from any suitable source, not shown.
The adjusting screws vl6 are adjusted to position the
bottom plate 14 to such a position relative to the shuttle
wheels 35 and 36 that the forward edge 41 of the active
portion 39 of the helices will be exposed above the ref
erence plane 53. For this purpose, apertures 57 and 58
are provided in the bottom plate 14 to expose the helices
The passive portion 40 of each of the helices is radially
37 and 38, respectively. At these apertures, a changing
abutment portion 59 and 60 is exposed. This changing
abutment portion is on the forward or driving edge of
the respective helices 37 and 38. This is shown enlarged
in FIGURE 5 for the helix 37. The radial dimension
of the abutment portion 59 which is exposed beyond the
reference plane ‘53 has a maximum vertical dimension
substantially equal to the thickness of one of the forms
24. For tab cards used in business machines for ex
ample, this might be cardboard in the order of .007” 30
thick.
Because the helix shafts are mounted on the
base 12 substantially at the given helix angle, this means
that the abutment portion 59 or 60 will be substantially
relieved as best shown in FIGURE 7. This provides that
during the time that the pinch rolls 50 and 51 are deliver
ing the card or form completely out of the form feeder
11, the stack 23 may move downwardly. This stack 23
thus moves :downward to ‘be supported on the raised land
68 surrounding each of the apertures 57 and 58. Such
raised land assures proper positioning of the stack and
especially the bottom form 24 relative to the raised helices
37 and 38. Thus, during this passive portion 40 which
may be about 90 degrees of arc of the complete cycle,
the stack 23 moves downwardly to be in position to feed
the next form off the [bottom of the stack 23.
The enlarged view of FIGURE 5 taken with FIGURE
6 shows another important feature of the invention. The
parallel to the rear or second edge 26 of the card or form
at the point or area ‘of abutment. This is shown in en 35 abutment portion 59 is that portion of the driving edge
41 which extends above the level of the reference plane
larged view in ‘FIGURE 5. Considering only the helix
53. Because the helix shafts are positioned substantially
37, for example, with this helix rotating in the direction
at the helix angle, e.g. 5 ‘degrees, this means that this
of the arrow 61 as shown in FIGURES 5 and 6 this estab
lishes a triangle of motion 62. This triangle of motion
is formed by the action of the helix on the helical shuttle
wheel plus the edge of the form 24 in motion. The hy
potenuse 63 of this motion triangle is formed by the
advancement of a point along the line parallel to the axis
of the helix shaft, in this case helix shaft 34. The length
of this hypotenuse 63 is equal to the helix lead length
or the portion of the lead length as used, namely, the
active portion 39.
The second side 64 of the motion triangle 62 is formed
by a point moving along the actual line of travel of
the form 24. This actual line of travel is along a line
parallel to the reference line 44 or perpendicular to the
abutment portion 59 of the helix. The length of the
second side 64 of the motion triangle 62 is a function of
the helix angle and the hypotenuse of the triangle. This
function would be the hypotenuse times the sine of the
helix angle.
The third side 65 of the motion triangle 62 is formed
by the line generated by a point moving along the back
edge 26 of the form 24. This point is formed by the
abutment portion 59 is generally parallel to the rear edge
40 26 of the form 24. This helps assure that there is more
than a point contact between the form 24 and the abut
ment portion 59.
A line contact or even an area contact
may be achieved.
This helps prevent mutilating or de
facing the rear edge 26 :of these forms as they are fed by
45 the form feeder 11.
It has been found that forms or cards are easily and
rapidly fed by this feeder 11, thus the feeder is quite de
pendable. One factor greatly aiding the dependability
of feeding is that the point or area of contact on the rear
50 edge 26 of the form being fed is constantly moving. This
movement of the point of contact is equal in length to
the third side 65 of the motion triangle 62. Thus, the
rotating helix does not contact a single point on the rear
edge of the card and, thus there is far less tendency to
55 wear away or abrade (this rear edge 26 of the form.
FIGURE 5 illustrates the axis 69 of the helix shaft 33.
If the helix angle is exactly 5 degrees, for example, and
the helix shaft 33 is set at exactly this 5 degree angle,
then the point of contact between the rear edge 26 of the
contact of the abutment portion of the helix and the 60 form and the abutment portion 59 will be at a point 70.
form rear edge 26 moving along the helix angle. The
length of the third side of the motion triangle is a func
tion of the helix angle and the length of the hypotenuse
63. This function would be the hypotenuse times the
However, if the angle of placement of the helix shaft
33 is made slightly greater than the given helix angle,
the changing abutment portion 59 and 60 of the respec
component of motion downwand toward the reference
plane 53. This tends to pull the bottom form 24 down
against the bottom plate 14. This assures that this bot
tom (form will hug the bottom plate 14 and not be raised
for example ?ve degrees and ten minutes, on a new axis
69A, then the point of contact may be changed to a
new point 71 for example. This new point of contact
cosine of the helix angle.
65
71 is at a point where the abutment portion 59 has a
Rotation of the helix wheels 35 and 36 therefore causes
tive helices to engage the rear edge 26 of the form and
drive this bottom form 24 along a path parallel to the
reference line 44 and out through the throat 20. After
it has moved forward a short distance, the ?rst edge 25
of the bottom form is engaged in the nip 52 of the pinch
rolls 50 and 51. These rolls engage the upper and
lower surface of this bottom form and rapidly eject this
form along this same leftward path. It will be noted
up to move out of contact with the abutment portion 59.
A second advantage is found and that is that the abutment
portion 59 is slightly [overhanging at this new point of
contact 71. This is observed in vFIGURE 5 by noting
the ‘dotted line 72 which indicates the base of the raised
01 helix 37 as opposed to the outermost surface of this
3,097,845
ment portion 59 thus also assures that there is a com
means on said frame de?ning a reference plane,
means to urge a stack of substantially flat for-ms ?at
ponent of force urging the bottom form 24 downwardly
toward the bottom plate 14.
means de?ning a discharge throat at an angle to said
raised helix. This slight overhanging edge of the abut
wise toward said reference plane,
reference plane,
If a reciprocating feeder were used on apertured business
each of said forms having ?rst and second edges with
a ?rst edge of each form adjacent said throat,
cards and the device jammed because of a bent card, such
reciprocating ‘feeder would tend to de?nitely mutilate the
card trying to be fed. Such rnultilation of the card
makes successful reproduction thereof in a reproducing
punch exceedingly difficult. In contradistinction, the
means exposing beyond said reference plane a drive
abutment portion of said active portion generally
10
helical shuttle wheels of the present invention do not
badly mutilate a bent card which refuses to be fed through
the throat 20, and the helices merely cut two small tri
angular notches in the rear edge 26 of this bottom card
and do not otherwise mutilate the card. Thus, this 15
perpendicular to said reference plane by an amount
substantially equal to the thickness of one of said
forms,
punch to obtain a new business card with the correct
and means effecting drive of the second edge of the
form contiguous with the reference plane in a di
rection through said throat in accordance with move
ment of said drive abutment portion relative to said
throat upon rotation of said shuttle wheel.
apertures therein.
2. A mechanism for feeding substantially ?at forms
damaged card may easily be placed in a reproducing
from one end of a stack comprising, in combination, a
The rollers 28 and 30‘ plus the small area of the raised
land 68 assure low friction between the bottom form 24 20 frame,
a rotatable shuttle wheel journalled relative to said
and the bottom plate 14- or reference plane 53 and thus
the bottom form is easily ejected through the throat 20.
It has been found that this form feeder 11 is capable of
‘feeding forms at as high a rate as 18100 per minute.
This
high rate of ‘feeding is primarily attributable to lack of 25
any reciprocating parts with the consequent inertia there
of. Since there are no reciprocating parts to accelerate,
decelerate to a stop and accelerate in a reverse direction,
the entire mechanism may be operated at high speed.
FIGURE 8 shows a modi?ed shuttle wheel 80 wherein 30
the raised helix is ‘generated on a frustum of a cone. In
use, the shuttle 'wheel 80 would be used in the form
feeder 11 with the axis 182 of the cone positioned to
establish the helix v8'1 along a reference plane ‘83 which
would be the same as the reference plane 53 in FIG 35
URE 2.
‘FIGURES 9‘ and 10 show a modi?ed shuttle wheel
85 having a cam surface 86. This cam surface is in the
form of a helix or, more properly, a spiral having an
active portion '87 and a passive portion 88. The raised 40
active portion 87, upon rotation of the shuttle wheel
85, will move the ‘form 24 leftwardly. In use in the
form feeder III, the shuttle wheel '85 would be mounted
with the axis thereof vertical so that the active portion
87 could abut and cooperate with the rear edge 26‘ of
the form 24.
In the practice of the invention as set forth herein, the
various shuttle wheels 36, 8t} and Y85 may have either a
linear or a non-linear helix or cam surface thereon.
frame,
a cam surface in a generally helical form on said
shuttle wheel,
said cam surface having an integral number of cycles
per revolution of said shuttle wheel and having an
active portion and a passive portion together forming
one cycle,
means on said frame de?ning a reference plane,
means to urge a stack of substantially ?at for-ms ?at
wise toward said reference plane,
means de?ning a discharge throat at an angle to said
reference plane,
each of said ‘forms having ?rst and second edges with
a ?rst edge of each form adjacent said throat,
means exposing beyond said reference plane a drive
abutment portion of said active portion ‘generally
perpendicular to said reference plane by an amount
substantially equal to the thickness of one of said
forms,
said drive abutment portion adapted to abut the second
edge of the form contiguous to said reference plane
and with said drive abutment portion being sub
stantially parallel to said second edge at the area
of abutment,
and the passive portion of said cam surface being
relieved to not extend beyond said reference plane
to permit the next form in the stack to move to
a position contiguous to the reference plane.
3. A mechanism for feeding substantially flat forms
FIGURE 2 shows the helix ‘38 as being a linear helix,
however, a non-linear helix or cam surface may be prefer
from one end of a stack comprising, in combination, a
able ovhere it is desired to gradually accelerate the speed
frame,
of. movement of the bottom form 24. Such non-linear
curve is perhaps easiest to achieve in the cam surface 86
of ‘FIGURES 9' and ‘10.
Although this invention has been ‘described in its pre
ferred form ‘with a certain degree of particularity, it is
understood that the present disclosure of the preferred
form has been made only by way of example and that
numerous changes in the details of construction and the 60
combination and arrangement of parts may be resorted
to without departing from. the spirit and the scope of the
invention as hereinafter claimed.
‘What is claimed is:
l. A mechanism for feeding substantially ?at forms 65
from one end of a stack comprising, in combination, a
frame,
a rotatable shuttle wheel journalled relative to said
frame,
'
a cam surface in a generally helical form on said 70
shuttle wheel,
said cam surface having an integral number of cycles
per revolution of said shuttle wheel and having an
active portion and a passive portion together ‘form
75
ing one cycle,
a rotatable shuttle wheel journalled relative to said
frame,
a cam surface in a generally helical form on said
shuttle wheel,
said cam surface having an integral number of cycles
per revolution of said shuttle rwheel and having an
active portion and a passive portion together form
ing one cycle,
means on said frame de?ning a reference plane,
means to urge a stack of substantially flat forms ?at
wise toward said reference plane,
means de?ning a discharge throat at an angle to said
reference plane,
each of said forms having ?rst and second edges with
a ?rst edge of each ‘form adjacent said throat,
a driving edge on said cam surface active portion
disposed ‘generally perpendicular to said reference
plane,
means exposing a changing drive abutment portion
of said driving edge of said active portion beyond
said reference plane by an amount substantially equal
to the thickness of one of said forms,
said changing drive abutment portion adapted to abut
3,097,845
7
8
the second edge of the form contiguous to said refer
ence plane and with said drive abutment portion
being substantially parallel to said second edge at
means exposing a changing abutment portion of said
forward edge of said active arc beyond said refer
ence plane by an ‘amount substantially equal to the
the area of abutment,
thickness of one of said forms,
and the passive portion of said cam surface being re 5
lieved to not extend beyond said reference plane
said changing abutment portion adapted to abut the
second edge of said ?rst form in the stack and with
to permit the next form in the stack to \move to a
said abutment portion being substantially parallel to
position contiguous to the reference plane,
and movement of said drive abutment portion being
said second edge 1at the point of ‘abutment,
and the passive arc of said helix being radially relieved
to not extend beyond said reference plane.
in a path at an angle relative to a reference line per— 10
pendicular to said throat which angle is substan
tially equal to said given helix angle and with said
path substantially in said reference plane.
6. A mechanism for feeding ?at forms from one end
of a stack comprising in combination, a frame,
a plate disposed on said frame and having a form en
4. A mechanism for feeding ?at forms from one end
of a stack comprising in combination, a frame,
15
means on said frame de?ning a reference plane,
throat blade means carried on said frame ‘at an angle to
said reference plane,
gagement surface,
means to urge a stack of forms ?atwise against said
plate engagement surface and with one edge of each
form adjacent said throat blade,
blade means forming an open throat near a ?rst edge of
means to urge a stack of forms ?atwise toward said
the ?rst form contiguous to said plate with said throat
reference plane and with a ?rst edge of each form
adjacent said throat blade means,
larger than the thickness of a form but less than the
thickness of two forms,
a helix ‘W1166l having a raised helix of a given helix
said throat blade means forming an open throat near
the ?rst edge of the ?rst form contiguous to said
reference plane with said throat larger than the thick
angle,
a helix shaft mounting said helix Wheel and disposed
on the side of said plate opposite said engagement
surface and disposed substantially at said given helix
angle relative to a reference line perpendicular to said
ness of a form but less than the thickness of two
forms,
a helix wheel having a raised helix of a given helix
angle,
throat,
means mounting said helix wheel on the side of said
reference plane opposite the position of the stack 3O
with the axis of the wheel disposed substantially at
said given helix angle relative to a reference line per
pendicular to said throat,
drive means to rotate said helix wheel,
said helix having an integral number of cycles per revo
lution of said helix wheel and having an active arc
and a passive are together forming one cycle,
a forward edge of said helix active are being generally
radially disposed of said wheel,
said helix having an integral number of cycles per revo
lution of said helix wheel and having an active arc
and a passive are together forming one cycle,
a forward edge of said helix active are being disposed
an aperture in said plate exposing a changing abut~
ment portion of said forward edge of said active
arc beyond the plane of said plate engagement sur
face by an amount substantially equal to the thick
generally perpendicularly to said reference plane,
means exposing a changing abutment portion of said 40
forward edge of said active are beyond said refer
ence plane by an amount substantially equal to the
thickness of one of said forms,
said changing abutment portion adapted to abut the
second edge of said ?rst form in the stack and with
said abutment portion being substantially parallel to
said second edge at the point of abutment,
and the passive arc of said helix being relieved to not
ness of one of said forms,
said changing abutment portion adapted to abut the
second edge of said ?rst form in the stack and with
said abutment portion being substantially parallel to
said second edge at the point of abutment,
and the passive arc of said helix being radially relieved
to not extend beyond said plate engagement surface.
7. A mechanism for feeding ?at forms from one end
of a stack comprising in combination, a frame,
a plate disposed on said frame and having a form en
extend beyond said reference plane.
gagement surface,
5. A mechanism for feeding ?at forms from one end
of a stack comprising in combination, a frame,
means on said frame de?ning a reference plane,
a throat blade carried on said frame at an angle to said
plate,
means to urge a stack of forms ?atwise against said
throat blade means carried on said frame at an angle
to said reference plane,
means to urge a stack of forms ?atwise toward said Cr 01
reference plane and with a ?rst edge of each form
adjacent said throat blade means,
said throat blade means forming an open throat near
the ?rst edge of the ?rst form contiguous to said
reference plane with said throat 1larger than the thick 60
ness of a form but less than the thickness of two
plate engagement surface and with one edge of each
form adjacent said throat blade,
means to relatively adjust said plate and said throat
blade in a direction generally perpendicular to said
plate to expose the ?rst edge of the ?rst form can
tiguous to said plate at a throat larger than the
thickness of a form but less than the thickness of two
forms,
a helix wheel having a raised helix of a given helix angle,
a helix shaft mounting said helix wheel and disposed
generally parallel to said plate on the side thereof
forms,
a helix wheel having a raised helix of a given helix
angle,
opposite said engagement surface and disposed sub
a helix shaft mounting said helix wheel and disposed
on the side of said reference plane opposite the posi
tion of the stack and disposed substantially at said
given helix angle relative to a reference line per
pendicular to said throat,
stantially at said given helix angle relative to a ref
erence line perpendicular to said throat,
drive means to rotate said helix shaft,
said helix having an integral number of cycles per rev
olution of said helix wheel and having an active arc
and a passive arc together forming one cycle,
a forward edge of said helix active are being generally
drive means to rotate said helix wheel,
said helix having an integral number of cycles per revo
lution of said helix wheel and having an active arc
and a passive are together forming one cycle,
a forward edge of said helix active arc being disposed
generally perpendicularly to said reference plane,
drive means to rotate said helix wheel,
radially disposed of said wheel,
75
an aperture in said plate exposing a changing abutment
portion of said forward edge of said active arc be
yond the plane of said plate engagement surface by
3,097,845
19
tion to abut the ?rst edge of the stack of forms and
an amount substantially equal to the thickness of one
to expose a throat larger than the thickness of a form
of said forms,
said changing abutment portion adapted to abut the
but less than the thickness of two forms,
second edge of said ?rst form in the stack and with
a helix wheel,
a raised helix of a given helix angle on said helix
said abutment portion being substantially parallel to
said second edge at the point of abutment,
wheel,
the passive arc of said helix being radially relieved to
not extend beyond said plate engagement surface,
delivery means outboard of said throat to move a form
away from said throat,
10
and the lead of said active arc of said helix being greater
than the distance from said throat to said delivery
means such that as the helix rotates the abutment por
tion of the forward edge of said helix engages the
second edge of the ?rst form in the stack and moves 15
same through the throat for engagement of the ?rst
edge of the form by the delivery means.
8. A mechanism for feeding ?at forms from one end of
stack comprising in combination, a frame,
a plate disposed on said frame and having a form en
gagement surface,
a throat blade carried on said frame generally perpendic
a helix shaft mounting said helix wheel and disposed
generally horizontally under said plate at substan
tially said given helix angle relative to a reference
line perpendicular to said throat,
a forward edge of said raised helix being generally ra
dially disposed of said wheel and having an arcuate
portion adapted to abut the second edge of the bot
tom form in the stack and with said arcuate portion
being substantially parallel to said second edge at the
point of abutment,
an aperture in said bottom plate exposing said raised
helix above the level of said bottom plate by an
amount substantially equal to the thickness of one
of said forms for a given are of said helix,
the remaining arc of said helix being radially relieved
to a level below the level of said bottom plate,
and drive means to rotate said helix shaft to move said
ular toisaid plate,
abutting arcuate portion of said helix toward said
throat.
10. A mechanism for feeding ?at forms from the bot
form adjacent said throat blade,
tom of a stack comprising in combination, a frame,
means to relatively adjust said throat blade and said
a bottom plate horizontally disposed on said frame and
plate in a direction generally perpendicular to said
adapted to carry a stack of forms,
plate to relatively position said throat blade to abut
a throat blade carried on said frame,
the ?rst edge of the stack of forms and to expose the 30
means to adjust said throat blade in a vertical direction
?rst edge of the ?rst form contiguous to said plate at
to abut the ?rst edge of the stack of forms and to
a throat larger than the thickness of a form but less
expose a throat larger than the thickness of a form
thanthe thickness of two forms,
but less than the thickness of two forms,
a helix wheel having a raised helix of a given helix
angle,
a helix wheel,
a raised helix of a given ‘helix angle on said helix wheel,
a helix shaft mounting said helix wheel and disposed
a helix shaft mounting said helix wheel and disposed
generally parallel to said plate on the side thereof
means to urge a stack of forms ?atwise against said
plate engagement surface and with one edge of each 25
opposite said engagement surface and disposed sub
stantially at said given helix angle relative to a refer
ence line perpendicular to said throat,
a forward edge of said helix being generally radially
disposed of said wheel and having an arcuate portion
adapted to abut the second edge of said ?rst form
in the stack and with said arcuate portion being sub
generally ‘horizontally under said plate at substan
tially said given helix angle relative to a reference
line perpendicular to said throat,
a forward edge of said raised helix being generally radi
ally disposed of said wheel and having an arcuate
portion adapted to abut the second edge of the bot
tom form in the stack and with said arcuate portion
stantially parallel to said second edge at the point of
being substantially parallel to said second edge'at the
point of abutment,
abutment,
an aperture in said bottom plate exposing said raised
helix above the level of said bottom plate by an
' drive means to rotate said helix shaft,
an aperture in said plate exposing the raised helix be
yond the plane of said plate engagement surface by
an amount substantially equal to the thickness of
amount substantially equal to the thickness of one
of said forms for a given are of said helix,
one of said forms for an active arc of approximately
the remaining are of said helix being radially relieved
270° of said helix,
the remaining approximately 90° of said helix being
radially relieved to not extend beyond said plate en
gagement surface,
pinch roll means having a nip disposed generally on
the plane of said engagement surface and disposed
outboard of said throat blade,
said pinch roll means being counter-rotating in a direc
to a level below the level of said bottom plate,
drive means to rotate said helix shaft to move ‘said
abutting arcuate portion of said helix toward said
throat,
delivery means outboard of said throat to move a form
away from said throat,
and the ‘lead of said helix being greater than the distance
from said throat to said delivery means such that as
tion to eject a card away from said throat,
the helix rotates the forward edge thereof engages the
60
the lead of the active arc of said helix being greater
second edge of the bottom form and moves such bot
than the distance from said throat to said nip such
tom form through the throat for engagement of the
that as the helix rotates the forward edge thereof
?rst edge of the form by the delivery means.
engages the second edge of the ?rst form in the stack
11. A mechanism for feeding ?at forms from one end
and moves same through the throat for engagement 65 of a stack comprising in combination, a frame,
of the ?rst edge of the form by the nip of the pinch
a plate disposed on said frame and having a form en
roll means,
gagement surface,
and drive means for said pinch roll means to completely
an adjustable throat blade carried on said frame gener
eject the said ?rst form from the stack.
9. A mechanism for feeding ?at forms from the bottom 70
of a stack comprising in combination, a frame,
a bottom plate horizontally disposed on said frame
and adapted to carry a stack of forms,
a throat blade carried on said frame,
means to adjust said throat blade in a vertical direc
ally perpendicular to said plate,
means to urge a stack of forms ?atwise against said
plate engagement surface and with one edge of each
form adjacent said throat blade,
means to ?xedly adjust said throat blade in a direction
generally perpendicular to said plate to abut the ?rst
75
edge of the stack of forms and to expose the ?rst
shame-a5
12
11
edge of the ?rst form contiguous to said plate at a
throat larger than the thickness of a form but less
than the thickness of two forms,
?rst and second helix wheels,
right and left hand thread helices of a given heLix angle U!
on said ?rst and second helix wheels, respectively,
?rst and second helix shafts mounting said ?rst and sec
ond helix wheels, respectively, and disposed gener
ally parallel to said plate on the side thereof opposite
said engagement surface with said ?rst and second 10
shafts disposed substantially at plus and minus values,
and disposed outboard of said adjustable throat blade,
said pinch rolls being counter-rotating in a direction to
eject a card away from said throat in a path substan
tially parallel to said reference line,
the lead of said helices being greater than the horizontal
dimension from said throat to said nip such that as
the helices rotate the forward edge of each helix en
gages the second edge of the bottom card and moves
such bottom card through the throat for engagement
of the ?rst edge of the card by the nip of the pinch
respectively, of said given helix angle relative to a
reference line perpendicular to said throat,
a forward edge of each helix being generally radially
disposed of the respective wheel and having an arm
ate portion adapted to abut the second edge of said
?rst form in the stack and with said arcuate portion
being substantially parallel to said second edge at the
rolls,
and drive means for said pinch rolls to completely eject
the bottom card ‘from the stack of cards.
13. A mechanism for feeding cards from the bottom of
a stack comprising in combination, a frame,
an adjustable bottom plate horizontally disposed on
said frame and adapted to carry a stack of cards,
point of abutment,
rollers journalled on said frame on horizontal axes,
apertures in said bottom plate exposing the top sur
drive means to rotate said helix shafts in opposite direc
tions,
face of said rollers above the level of the upper sur
face of said bottom plate to support a ?rst edge of
apertures in said plate exposing the two helices beyond
the plane of said plate engagement surface by an
the stack of cards,
amount substantially equal to the thickness of one
of said forms for an arc of approximately 270° of 25
each helix,
the remaining approximately 90° of each helix being
radially relieved to not extend beyond said plate en
gagement surface,
?rst and second pinch rolls having a nip disposed gen
erally on the plane of said ?rst form in said stack and
disposed outboard of said adjustable throat blade,
said pinch rolls being counter-rotating in a direction
an adjustable throat blade carried on said frame,
means to adjust said throat blade in a vertical direction
to abut the ?rst edge of the stack of cards and to
expose a horizontal throat larger than the thickness
‘of a card but less than the thickness of two cards,
a helix shaft carrying a cylindrical helix wheel,
a right hand square thread helix of a given helix angle
on said helix wheel,
said helix shaft being disposed generally horizontally
under said frame at an ‘angle equal to said helix angle
relative to a reference line perpendicular to said
to eject a card away vfrom said throat,
the lead of said helices being greater than the distance
from said throat to said nip such that as the helices
rotate the forward edge of each helix engages the
throat,
one edge of the square thread helix being substantially
parallel to the second edge of the bottom card in the
second edge of the ?rst form in the stack and moves
same through the throat for engagement of the ?rst
edge of the form by the nip of the pinch rolls,
ally on the plane of the bottom card in said stack
stack and adapted to abut same,
drive means to rotate said helix shafts in opposite di
40
and drive means for said pinch rolls to completely eject
the said ?rst form from the stack.
12. A mechanism for feeding cards from the bottom
of a stack comprising in combination, a frame,
an adjustable bottom plate horizontally disposed on
rections,
an aperture in said bottom plate exposing said helix
above the level of said bottom plate by a dimension
substantially equal to the thickness of one of said
cards for an arc of approximately 270° of the helix,
the remaining 90° of said helix being radially relieved
said frame and adapted to carry a stack of cards,
an adjustable throat blade carried on said frame,
means to ?xedly adjust said throat blade in a vertical
dimension to abut the ?rst edge of the stack of cards
and to expose a throat larger than the thickness of a 50
card but less than the thickness of two cards,
to a level below the level of said bottom plate,
?rst and second pinch rolls on horizontal axes having
a nip disposed generally on the plane of the bottom
card in said stack and disposed outboard of said ad
justable throat blade,
?rst and second helix wheels,
right and left hand thread helices of a given helix angle
said pinch rolls being counter-rotating in a direction to
eject a card away from said throat,
the lead of said helix being greater than the horizontal
on said ?rst and second helix wheels, respectively,
?rst and second helix shafts mounting said ?rst and
second helix wheels, respectively, and disposed gener
dimension from said throat to said nip such that as
the helix rotates the edge of said square thread helix
engages the second edge of the bottom card and
ally horizontally under said plate with said ?rst and
second shafts disposed substantially at plus and minus
values, respectively, of said given helix angle rela
tive to a reference line perpendicular to said throat,
moves such bottom card through the throat for en
60
a forward edge of each helix being generally radially
disposed of the respective wheel and being substan
tially parallel to the second edge of the bottom card
in the stack and adapted to abut same,
drive means to rotate said helix shafts in opposite di
rections,
apertures in said bottom plate exposing the two helices
above the level of said bottom plate by an amount
substantially equal to the thickness of one of said 70
cards for an arc of approximately 270° of each helix,
the remaining approximately ‘90° of each helix being
radially relieved to a level below the level of said
bottom plate,
?rst and second pinch rolls having a nip disposed gener
gagement of the ?rst edge of the card by the nip
of the pinch rolls,
and drive means for said pinch rolls to completely eject
the bottom card from the stack of cards.
14. A mechanism for feeding cards from the bottom of
a stack comprising in combination, a frame,
an adjustable vbottom plate horizontally disposed on
said frame and adapted to carry a stack of cards,
rollers journalled on said frame on horizontal axes,
apertures in said bottom plate exposing the top surface
of said rollers above the level of the upper surface
of said bottom plate to support a ?rst edge of the
stack of cards,
an adjustable throat blade carried on said frame,
means to ?xedly adjust said throat blade in a vertical
direction to abut the ?rst edge of the stack of cards
and to expose a horizontal throat vertically larger
3,097,845
14
13
than the thickness of a card but less than the thick
ness of two cards,
?rst and second cylindrical helix wheels,
right and left hand square thread helices of a given
helix angle on said ?rst and second helix wheels,
respectively,
?rst and second helix shafts mounting said ?rst and
second wheels, respectively, and disposed generally
horizontally under said frame with said ?rst and
second shafts disposed at plus and minus values, re 10
spectively, of said ‘given helix angle relative to a
reference line perpendicular to said throat,
one edge of each square thread helix being substan
tially parallel to the second edge of the bottom card
in the stack and adapted to abut same,
15
drive means to rotate said helix shafts in opposite direc
tions,
apertures in said bottom plate exposing the two helices
above the level of said bottom plate by an amount
substantially equal to the thickness of one of said 20
cards for an arc of approximately 270° of each helix,
the remaining 90° of each helix being radially relieved
to not protrude above the level of said bottom plate,
?rst and second pinch rolls on horizontal axes having
a nip disposed generally on the plane of the bottom
card in said stack and disposed outboard of said ad
justable throat blade.
said pinch rolls ‘being counter-rotating in a direction to
eject a card away from said throat,
the lead of said helices being greater than the hori
zontal dimension from said throat to said nip such
that as the helices rotate the edge of each square
thread helix engages the second edge of the bottom
card and moves such bottom card through the throat
for engagement of the ?rst edge of the card by the
nip‘ of the pinch rolls,
and drive means for said pinch rolls to completely eject
the bottom card vfrom the stack of cards during said
90° rotation of said helix wheels.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,794,198
1,868,112
1,890,062
2,433,736
Murray _____________ __ Feb. 24,
Lasker _____________ __ July 19,
Madden _____________ __ Dec. 6,
Carew _____________ -_ Dec. 30,
1931
1932
1932
1947
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